Crawler pad

Abstract

A crawler pad to be mounted on a tread surface of a crawler plate forming a crawler for forming an elastic tread for protecting a road surface, comprises an elastic member forming the tread of the crawler pad, a reinforcement supporting the elastic member, a fixed hook member integrally formed with the reinforcement for engaging with one edge of the crawler plate, a detachable hook member detachably secured at the other end of the reinforcement for engaging with the other edge of the crawler plate, and a fastening member for firmly securing the detachable hook to the other end of the reinforcement, the fastening member having an outer end placed at an inwardly shifted position relative to the outer end portion of the detachable hook member.

What is claimed is: 
     
       1. A crawler pad to be mounted on a tread surface of a crawler plate forming a crawler for forming an elastic tread for protecting a road surface, comprising: an elastic member forming the tread of the crawler pad;   a reinforcement supporting said elastic member, said reinforcement having first and second outer ends;   a fixed hook means integrally formed with said reinforcement at said first outer end thereof for engaging with a first edge of said crawler plate;   a . .detectable.!. .Iadd.detachable .Iaddend.hook means detachably secured to said second outer end of said reinforcement for engaging with a second edge of said crawler plate, said . .detectable.!. .Iadd.detachable .Iaddend.hook means having an outermost portion spaced from said second outer end of said reinforcement; and . .p1.!.   a fastening means for firmly engaging with said reinforcement for firmly securing said detachable hook means to said second outer end of said reinforcement, said fastening means having an inner end portion engaging said second outer end of said reinforcement and an outer end portion disposed between said outermost portion of said detachable hook means and said second outer end of said reinforcement.   
     
     
       2. A crawler pad as set forth in claim 1, wherein a seat position of said . .detectable.!. .Iadd.detachable .Iaddend.hook means to be fitted to said second outer end of said reinforcement is shifted inwardly from a portion of the . .detachment.!. .Iadd.detachable .Iaddend.hook means to be engaged with the second edge of the crawler plate. 
     
     
       3. A crawler . .pas.!. .Iadd.pad .Iaddend.set forth in claim 1, wherein a seat position of said detachable hook means to be fitted to said second outer end of said reinforcement is shifted inwardly from an adjacent end of said elastic member. 
     
     
       4. A crawler pad as set forth in claim 1, wherein a grouser receptacle portion is formed in said reinforcement for engaging with a grouser provided on said tread surface of said crawler plate. 
     
     
       5. A crawler pad as set forth in claim 1, wherein said reinforcement is formed with an engaging portion for engaging with a link mounting bolt for restricting displacement of said crawler pad in a running direction of said crawler. 
     
     
       6. A crawler pad as set forth in claim 5, wherein said engaging portion for engaging with said link mounting bolt comprises an engaging hole. 
     
     
       7. A crawler pad as set forth in claim 5, wherein said engaging portion for engaging with said link mounting bolt comprises a contact plate contacting with said link mounting bolt in the running direction of said crawler. 
     
     
       8. A crawler pad as set forth in claim 5, wherein said engaging portion engages with a plurality of link mounting bolts and said engaging portion comprises plate members externally contacting with a plurality of said link mounting bolts. 
     
     
       9. A crawler pad as set forth in claim 5, wherein said engaging portion engages with a plurality of link mounting bolts and said engaging portion comprises plate members arranged for internally contacting with respective link mounting bolts. 
     
     
       10. A crawler pad as set forth in claim 5, wherein said engaging portion comprises a pipe member engaging with said link mounting bolt. 
     
     
       11. A crawler pad as set forth in claim 5, wherein said reinforcement comprises a frame-like base, on which said elastic member is rigidly secured. 
     
     
       12. A crawler pad as set forth in claim 5, wherein said reinforcement comprises a metal core and said engaging portion comprises an engaging member rigidly fixed to said metal core. 
     
     
       13. A crawler pad as set forth in claim 5, wherein said reinforcement comprises a metal core and said engaging portion comprises an engaging member integrally formed with said metal core. 
     
     
       14. A crawler pad as set forth in claim 5, wherein a part of said detachable hook means is buried within said elastic member. 
     
     
       15. A crawler pad as set forth in claim 1, wherein said reinforcement is provided with an engaging member for engaging with a grouser formed on the tread surface of said crawler plate. 
     
     
       16. A crawler pad to be mounted on a tread surface of a crawler plate forming a crawler for forming an elastic tread for protecting a road surface, comprising: an elastic forming the tread of the crawler pad;   a reinforcement supporting said elastic member, said reinforcement having first and second outer ends;   a fixed hook means integrally formed with said reinforcement at said first outer end thereof for engaging with a first edge of said crawler plate;   a detachable hook means detactably secured to said second outer end of said reinforcement for engaging with a second edge of said crawler plate, said detachable hook means having an outermost portion spaced from said second outer end of said reinforcement;   an engaging means provided in said reinforcement for engaging with a link mounting bolt projecting from the tread surface of said crawler plate for restricting displacement of said crawler pad in a running direction of said crawler; and   a fastening means for firmly engaging with said reinforcement for firmly securing said detachable hook means to said second outer end of said reinforcement, said fastening means having an inner end portion engaging said second outer end of said reinforcement and an outer end portion disposed between said outermost portion of said detachable hook means and said second outer end of said reinforcement.   
     
     
       17. A crawler pad as set forth in claim 16, wherein said engaging means for engaging with said link mounting bolt comprises an engaging hole. 
     
     
       18. A crawler pad as set forth in claim 16, wherein said engaging means for engaging with said link mounting bolt comprises a contact plate contacting with said link mounting bolt in the running direction of said crawler. 
     
     
       19. A crawler pad as set forth in claim 16, wherein said engaging means engages with a plurality of link mounting bolts and said engaging means comprises plate members externally contacting with a plurality of said link mounting bolts. 
     
     
       20. A crawler pad as set forth in claim 16, wherein said engaging means engages with a plurality of link mounting bolts and said engaging means comprises plate members arranged for internally contacting with respective link mounting bolts. 
     
     
       21. A crawler pad as set forth in claim 16, wherein said engaging means comprises a pipe member engaging with said link mounting bolt. 
     
     
       22. A crawler pad as set forth in claim 16, wherein said reinforcement comprises a frame-like base, on which said elastic member is rigidly secured. 
     
     
       23. A crawler pad as set forth in claim 16, wherein said reinforcement comprises a metal core and said engaging means comprises an engaging member rigidly fixed to said metal core. 
     
     
       24. A crawler pad as set forth in claim 16, wherein said reinforcement comprises a metal core and said engaging means comprises an engaging member integrally formed with said metal core. 
     
     
       25. A crawler pad as set forth in claim 16, wherein a part of said detachable hook means is buried within said elastic member. 
     
     
       26. A crawler pad to be mounted on a tread surface of a crawler plate forming a crawler and having a grouser on said tread surface, for forming an elastic tread for protecting a road surface, comprising: an elastic member forming the tread of the crawler pad;   a reinforcement supporting said elastic member, said reinforcement having first and second outer ends;   an engaging member extending from said reinforcement for contacting with said tread surface of said crawler plate and engaging with said grouser;   a fixed hook means integrally formed with said reinforcement at said first outer end thereof for engaging with a first edge of said crawler plate;   a detachable hook means detachably secured to said second outer end of said reinforcement for engaging with a second edge of said crawler plate, said detachable hook means having an outermost portion spaced from said second outer end of said reinforcement; and   a fastening means for firmly engaging with said reinforcement for firmly securing said detachable hook means to said second outer end of said reinforcement, said fastening means having an inner end portion engaging said second outer end of said reinforcement and an outer end portion disposed between said outermost portion of said detachable hook means and said second outer end of said reinforcement.   
     
     
       27. A crawler pad as set forth in claim 26, wherein a leg member to contact with said tread surface of said crawler plate is extended from a side of said reinforcement facing said tread surface. 
     
     
       28. A crawler pad as set forth in claim 26, wherein the tread surface of said elastic member is formed into an uneven profile for better traction. 
     
     
       29. A crawler pad as set forth in claim 26, wherein a frame is extended from longitudinal sides of said reinforcement within said elastic member. 
     
     
       30. A crawler pad as set forth in claim 26, wherein said elastic member comprises a major portion formed of a relatively softer material and a plurality of harder portions formed of a relatively harder material. 
     
     
       31. A crawler pad as set forth in claim 26, wherein a plurality of spikes are implanted in said elastic member. 
     
     
       32. A crawler pad as set forth in claim 26, wherein said engaging member comprises an engaging hole. 
     
     
       33. A crawler pad as set forth in claim 26, wherein said engaging member comprises a contact plate contacting with a link mounting bolt in the running direction of said crawler. 
     
     
       34. A crawler pad as set forth in claim 26, wherein said engaging member engages with a plurality of link mounting bolts and said engaging member comprises plate members externally contacting with a plurality of said link mounting bolts. 
     
     
       35. A crawler pad as set forth in claim 26, wherein said engaging member engages with a plurality of link mounting bolts and said engaging member comprises plate members for internally contacting with respective link mounting bolts. 
     
     
       36. A crawler pad as set forth in claim 26, wherein said engaging member comprises a pipe member engaging with a link mounting bolt. 
     
     
       37. A crawler pad as set forth in claim 26, wherein said reinforcement comprises a frame-like base, on which said elastic member is rigidly secured. 
     
     
       38. A crawler pad as set forth in claim 26, wherein said reinforcement comprises a metal core and said engaging member is rigidly fixed to said metal core. 
     
     
       39. A crawler pad as set forth in claim 26, wherein said reinforcement comprises a metal core and an engaging member integrally formed with said metal core. 
     
     
       40. A crawler pad as set forth in claim 26, wherein a part of said detachable hook means is buried within said elastic member. 
     
     
       41. A crawler pad to be mounted on a tread surface of a crawler plate forming crawler and having a grouser on said tread surface, for forming an elastic tread for protecting a road surface, comprising; an elastic member forming the tread of the crawler pad, said elastic member engaging with said grouser and contacting with said tread surface of said crawler plate;   a reinforcement supporting said elastic member, said reinforcement having first and second ends and comprising a flat plate portion extending in parallel to said tread surface of said crawler plate, said flat plate portion having a surface side for facing away from said tread surface and a back side for facing said tread surface, said flat plate portion being fitted with said elastic member on both of said surface side and said back side thereof, said back side of said flat plate portion forming a backwardly opened box-shaped configuration;   a fixed hook means integrally formed with said reinforcement at said first end thereof through a stepped portion for engaging with a first edge of said crawler plate; and   a detachable hook means formed with stepped configuration and detachably secured at said second end of said reinforcement for engaging with a second edge of said crawler plate.   
     
     
       42. A crawler pad as set forth in claim 41, wherein said flat plate portion comprises first and second longitudinal side edges, said backwardly opened box-shaped configuration being defined by first and second side plates extending from said first and second longitudinal side edges of said flat plate portion, said side plates having ends which are rigidly connected to said fixed hook means. 
     
     
       43. A crawler pad as set forth in claim 41, wherein said fixed hook means and said detachable hook means are formed with a receptacle for receiving said grouser of said crawler plate. 
     
     
       44. A crawler pad as set forth in claim 41, wherein said elastic members are terminated at longitudinal positions slightly inside of the longitudinal ends of said flat plate portion of said crawler plate. 
     
     
       45. A crawler pad as set forth in claim 41, wherein a width of said elastic member at a surface side thereof is selected to position opposite ends of said elastic member inside of the first and second edges of said crawler plate. 
     
     
       46. A crawler pad to be mounted on a tread surface of a crawler plate forming a crawler for forming an elastic tread for protecting a road surface, comprising: an elastic member forming the tread of the crawler pad;   a reinforcement supporting said elastic member, said reinforcement having first and second outer ends;   a fixed hook means integrally formed with said reinforcement at said first out end thereof for engaging with a first edge of said crawler plate;   a detachable hook means detachably secured to said second outer end of said reinforcement for engaging with a second edge of said crawler plate, said detachable hook means having an outermost portion spaced from said second outer end of said reinforcement;   a fastening means for firmly engaging with said reinforcement for firmly securing said detachable hook to said second outer end of said reinforcement, said fastening means having an inner end portion engaging said second outer end of said reinforcement and an outer end portion disposed between said outermost portion of said detachable hook means and said second outer end of said reinforcement; and   a fixing means for fixing said reinforcement to said crawler plate for restricting displacement of said crawler pad relative to said crawler plate.   
     
     
       47. A crawler pad as set forth in claim 46, wherein said fixing means comprises a cut-out formed in one of said crawler plate and said reinforcement and an engaging tongue engaging with said cut-out and formed in the other of said crawler plate and said reinforcement. 
     
     
       48. A crawler pad as set forth in claim 47, wherein said crawler plate has a grouser fixed thereto and said cut-out is formed through said grouser. 
     
     
       49. A crawler pad as set forth in claim 46, wherein said fixing means comprises bolts extending through both of said crawler panel and said reinforcement. 
     
     
       50. A crawler pad as set forth in claim 49, wherein said crawler plate has a grouser fixed thereto and said bolts extend through said grouser and said reinforcement. 
     
     
       51. A crawler pad to be mounted on a tread surface of a crawler plate forming a crawler and having a grouser on said tread surface, for forming an elastic tread for protecting a road surface, comprising: an elastic member forming the tread of the crawler pad, said elastic member engaging with said grouser and contacting with the tread surface of said crawler plate;   a reinforcement supporting said elastic member, said reinforcement having first and second ends and comprising a flat plate portion extending in parallel to said tread surface of said crawler plate, said flat plate portion having a surface side for facing away from said tread surface and a back side for facing said tread surface, said flat plate portion being fitted with said elastic member on both of said surface side and said back side thereof, said back side of said flat plate portion forming a backwardly opened box-shaped configuration;   a fixed hook means integrally formed with said reinforcement at a first end thereof through a stepped portion for engaging with a first edge of said crawler plate, said fixed hook means having a receptacle for receiving said grouser of said crawler plate;   a detachable hook means formed with stepped configuration and detachably secured at said second end of said reinforcement for engaging with a second edge of said crawler plate, said detachable hook means having a receptacle for receiving said grouser of said crawler plate.   
     
     
       52. A crawler pad to be mounted on a tread surface of a crawler plate forming a crawler for forming an elastic tread for protecting a road surface, comprising: an elastic member forming the tread of the crawler pad;   a reinforcement supporting said elastic member, said reinforcement having first and second outer ends and a back side for facing said crawler plate;   a fixed hook means integrally formed with said reinforcement at said first outer end thereof for engaging with a first edge of said crawler plate;   a detachable hook means detachably secured to said second outer end of said reinforcement for engaging with a second edge of said crawler plate, said detachable hook means having an outermost portion spaced outwardly from said second outer end of said reinforcement;   a fastening means for firmly securing said detachable hook means to said second outer end of said reinforcement, said fastening means having an inner end portion engaging said second outer end of said reinforcement and an outer end portion disposed between said outermost portion of said detachable hook means and said second outer end of said reinforcement; and   means, located at the back side of said reinforcement, for defining a receptacle for receiving at least one link mounting bolt.   
     
     
       53. A crawler pad to be mounted on a tread surface of a crawler plate forming a crawler and having a grouser on said tread surface, for forming an elastic tread for protecting a road surface, comprising: an elastic member forming the tread of the crawler pad, said elastic member engaging with said grouser and contacting with said tread surface of said crawler plate;   a reinforcement supporting said elastic member, said reinforcement having first and second ends and a surface side for facing away from said tread surface and a back side for facing said tread surface, said reinforcement comprising a flat plate portion having first and second longitudinal sides extending in parallel to said tread surface of said crawler plate and side plates extending from said longitudinal sides of said flat plate portion in a direction toward said tread surface for forming a backwardly opened box-shaped configuration, said reinforcement being fitted with said elastic member on both of the surface side and the back side thereof;   a fixed hook means integrally formed with said reinforcement at said first end thereof through a stepped portion for engaging with a first edge of said crawler plate;   a detachable hook means formed with stepped configuration and detachably secured at said second end of said reinforcement for engaging with a second edge of said crawler plate; and   means, located at the back side of said reinforcement, for defining a receptacle for receiving at least one link mounting bolt. .Iadd.   
     
     
       54.  A crawler pad to be mounted on a tread surface of a crawler plate forming a crawler and having a grouser on said tread surface, for forming an elastic tread for protecting a road surface, comprising: an elastic member forming the tread of the crawler pad, said elastic member engaging with said grouser and contacting with said tread surface of said crawler plate;   a reinforcement supporting said elastic member, said reinforcement having first and second ends and a surface side for facing away from said tread surface and a back side for facing said tread surface, said reinforcement comprising a flat plate Portion having first and second longitudinal sides extending in parallel to said tread surface of said crawler plate and side plates extending from said longitudinal sides of said flat plate portion in a direction toward said tread surface for forming a backwardly opened box-shaped configuration, said reinforcement being fitted with said elastic member on both of the surface side and the back side thereof;   a fixed hook means integrally formed with said reinforcement at said first end thereof through a stepped portion for engaging with a first edge of said crawler plate, said fixed hook means having a receptacle for receiving said grouser of said crawler plate;   a detachable hook means formed with stepped configuration and detachably secured at said second end of said reinforcement for engaging with a second edge of said crawler plate, said detachable hook means having a receptacle for receiving said grouser of said crawler plate; and   means, located at the back side of said reinforcement, for defining a receptacle for receiving at least one link mounting bolt. .Iaddend..Iadd.55. A crawler pad to be mounted on a tread surface of a crawler plate forming a crawler and having a grouser on said tread surface, for forming an elastic tread for protecting a road surface, comprising;   an elastic member forming the tread of the crawler pad, said elastic member engaging with said grouser and contacting with said tread surface of said crawler plate;   a reinforcement supporting said elastic member, said reinforcement having first and second ends and comprising a flat plate portion extending in parallel to said tread surface of said crawler plate, said flat plate portion having a surface side for facing away from said tread surface and a back side for facing said tread surface, said flat plate portion being fitted with said elastic member on both of said surface side and said back side thereof;   hook means provided at both ends of said reinforcement for fixing said reinforcement on said crawler plate, each of said hook means being formed with a stepped configuration and a receptacle for receiving said grouser of said crawler plate. .Iaddend..Iadd.56. A crawler pad to be mounted on a tread surface of a crawler plate forming a crawler and having a grouser on said tread surface, for forming an elastic tread for protecting a road surface, comprising;   an elastic member forming the tread of the crawler pad, said elastic member engaging with said grouser and contacting with said tread surface of said crawler plate;   a reinforcement supporting said elastic member, said reinforcement having first and second ends and comprising a flat plate portion extending in parallel to said tread surface of said crawler plate, said flat plate portion having a surface side for facing away from said tread surface and a back side for facing said tread surface, said flat plate portion being fitted with said elastic member on both of said surface side and said back side thereof;   hook means provided at both ends of said reinforcement for fixing said reinforcement on said crawler plate, each of said hook means being formed with a stepped configuration and an engaging opening for receiving said grouser of said crawler plate. .Iaddend..Iadd.57. A crawler pad to be mounted on a tread surface of a crawler plate forming a crawler and having a grouser on said tread surface, for forming an elastic tread for protecting a road surface, comprising:   an elastic member forming the tread of the crawler pad;   a reinforcement supporting said elastic member, said reinforcement having first and second outer ends;   hook means provided at both outer ends of said reinforcement for engaging with edges of said crawler plate, for securing said elastic member and said reinforcement on said crawler plate, at least one of said hook means being provided with a receptacle for engaging with at least one longitudinal end of said grouser. .Iaddend..Iadd.58. A crawler pad as set forth in claim 57, wherein one of said hook means is a fixed hook means integrally formed with said reinforcement and said receptacle is formed in said fixed hook means. .Iaddend..Iadd.59. A crawler pad as set forth in claim 57, wherein one of said hook means is a detachable hook means detachably secured on one longitudinal end of said reinforcement, and said   
     
     
        receptacle is formed in said detachable hook means. .Iaddend..Iadd.60.  A crawler pad as set forth in claim 59, wherein said detachable hook means has an outermost portion spaced from said second outer end of said reinforcement, and a mating portion which is mated to said outermost portion to be secured thereon. .Iaddend..Iadd.61. A crawler pad as set forth in claim 59, wherein said detachable hook means comprises a cast block having a recess serving as said receptacle. .Iaddend..Iadd.62. A crawler pad as set forth in claim 59, wherein said detachable hook means has a mating portion mating with a corresponding longitudinal end of said reinforcement to be fixed thereon by means of at least one fastening means, a stepped hooking portion engaging with the longitudinal end of said crawler plate at a position outwardly offset from the mating portion, and an outer end portion of said fastening means is disposed between said mating portion and the longitudinal end of said crawler plate. .Iaddend..Iadd.63. A crawler pad as set forth in claim 57, wherein said hook means are detachable hook means detachably secured on both longitudinal ends of said reinforcement, and said receptacles are formed in said detachable hook means, each of said detachable hook means having a mating portion mating with a corresponding longitudinal end of said reinforcement to be fixed thereon by means of at least one fastening means, a stepped hooking portion engaging with the longitudinal end of said crawler plate at position outwardly offset from the mating portion, and an outer end portion of said fastening means is disposed between said mating portion and the longitudinal and of said crawler plate. .Iaddend..Iadd.64. A crawler pad as set forth in claim 57, wherein one of said hook means is a fixed hook means integrated with one end said reinforcement and the other of said hook means is a detachable hook means detachably secured on the other end of said reinforcement, and said fixed hook means and said detachable hook means comprise cast blocks respectively having said receptacles for engagement with the longitudinal end of said grouser of said crawler plate. .Iaddend..Iadd.65. A crawler pad as set forth in claim 57, wherein both said hook means are detachable hook means detachably secured on respective ends of said reinforcement, and each of said detachable hook means comprises cast blocks respectively having said receptacles for engagement with the longitudinal end of said grouser of said crawler plate. .Iaddend..Iadd.66. A crawler pad to be mounted on a tread surface of a crawler plate forming a crawler and having a grouser on said tread surface, for forming an elastic tread for protecting a road surface, comprising: an elastic member forming the tread of the crawler pad, said elastic member engaging with said grouser and contacting with said tread surface of said crawler plate;   a reinforcement supporting said elastic member, said reinforcement having first and second outer ends;   hook means provided at both outer ends of said reinforcement for engaging with edges of said crawler plate for securing said elastic member and said reinforcement on said crawler plate, at least one of said hook means is a detachable hook means which has a mating portion mating with a corresponding longitudinal end of said reinforcement to be fixed thereon by means of at least one fastening bolt, and a stepped hooking portion engaging with the longitudinal end of said crawler plate at a position outwardly offset from the mating portion between said mating portion, and an outer end portion of said fastening means is disposed between said mating portion and the longitudinal end of said crawler plate. .Iaddend..Iadd.67. A crawler pad to be mounted on a tread surface of a crawler plate forming a crawler and having a grouser on said tread surface, for forming an elastic tread for protecting a road surface, comprising:   an elastic member forming the tread of the crawler pad;   a reinforcement supporting said elastic member, said reinforcement having first and second outer ends;   hook means provided at both outer ends of said reinforcement for engaging with edges of said crawler plate for securing said elastic member and said reinforcement on said crawler plate, said hook means comprising cast blocks. .Iaddend..Iadd.68. A crawler pad to be mounted on a tread surface of a crawler plate forming a crawler for forming an elastic tread for protecting a road surface, comprising:   an elastic member forming the tread of the crawler pad;   a reinforcement supporting said elastic member, said reinforcement having first and second outer ends;   a fixed hook means integrally formed with said reinforcement at said first outer end thereof;   a detachable hook means detachably secured to said second outer end of said reinforcement for engaging with a second edge of said crawler plate, said detachable hook means comprising cast blocks; and   a fastening means for firmly engaging with said reinforcement for firmly securing said detachable hook means to said second outer end of said reinforcement. .Iaddend.