Automatic sand abrasion device

Abstract

An automatic sand abrasion device includes a shell, an integrated framework, a sand falling mechanism, a sand transport mechanism, a sand falling channel, a sample working frame and a circuit control cabinet, where the device adopts the transport belt and the second speed reduction motor to realize transportation of sand, and realizes that the weighed sand falls into the bottom of the abrasion device through the first speed reduction motor and the automatic weighing machine. The whole process can be automatically operated while parameters such as the operation time and the weight of abrasion sand are set, so that the detection efficiency for the abrasion resistance can be improved, and the labor cost is greatly reduced. The device is firm in structure and stable and reliable in work and improves the accuracy and efficiency of an experiment.

1 . An automatic sand abrasion device, comprising:
 a shell, an integrated framework, a sand falling mechanism, a sand transport mechanism, a sand falling channel, a sample working frame and a circuit control cabinet;   wherein the integrated framework comprises an experiment table supporting frame, supporting rods and a weighing machine bracket; the weighing machine bracket is fixedly mounted at a bottom in the experiment table supporting frame; the supporting rods are fixedly disposed in the experiment table supporting frame;   wherein the shell is welded on the experiment table supporting frame, and the integrated framework, the sand falling mechanism, the sand transport mechanism, the sand falling channel and the sample working frame are all located in the shell; the circuit control cabinet is located outside the shell;   wherein the sand falling mechanism is configured to allow sand on an automatic weighing machine to fall into a bottom of the automatic sand abrasion device, and comprises a guide rail slot, the automatic weighing machine, a first speed reduction motor and a rectangular toothed rack frame; the guide rail slot is fixed on the weighing machine bracket; the rectangular toothed rack frame is disposed on two sides of the inner side of the guide rail slot; a toothed rack is disposed on the rectangular toothed rack frame; the automatic weighing machine and the rectangular toothed rack frame are fixedly connected; a gear of the first speed reduction motor is mounted in the rectangular toothed rack frame and meshes with the toothed rack of the rectangular toothed rack frame, so that the gear of the first speed reduction motor is configured to drive the automatic weighing machine through the rectangular toothed rack frame to do a horizontal back and forth motion along the guide rail slot;   wherein the sand transport mechanism comprises a second speed reduction motor, a transport belt wheel, a transport belt and guide rollers; the second speed reduction motor is fixed at the exterior top of the experiment table supporting frame; the guide rollers are fixed along a moving track of the transport belt; an output shaft of the second speed reduction motor is connected with the transport belt wheel; the transport belt is disposed on the transport belt wheel; the second speed reduction motor drives the transport belt wheel to rotate; the transport belt wheel rotates to drive the transport belt to operate along a rail regulated by the guide rollers; experimental sand is poured into the bottom of the sand abrasion device to submerge a bottom of the transport belt;   wherein the sand falling channel is located at a middle position of a region encircled by the transport belt, and comprises an upper funnel, a falling pipe and a sand collection inverted bucket; an upper end of the falling pipe is provided with the upper funnel, and a lower end of the falling pipe is provided with the sand collection inverted bucket; the falling pipe and the sand collection inverted bucket are fixedly mounted on the experiment table supporting frame; a door is disposed on the sand collection inverted bucket and can be opened to place an experiment object; a lower end of the sand collection inverted bucket is in contact with an upper surface of the automatic weighing machine; the area of the upper surface of the automatic weighing machine is larger than that of an opening at the lower end of the sand collection inverted bucket;   wherein the sample working frame comprises an experiment object frame, an object frame supporting rod and object fixing bolts; the experiment object frame is located in the sand collection inverted bucket; the object frame supporting rod passes through the sand collection inverted bucket to fix the experiment object frame on the experiment table supporting frame; the object fixing bolts are used for fixing the experiment object and adjusting the position of the experiment object on the experiment object frame; and   wherein the circuit control cabinet is located on one side of the shell and is configured to control the work of the first speed reduction motor and the second speed reduction motor; and the circuit control cabinet is provided with a display to display a current total amount and an accumulated weight of the sand weighed by the automatic weighing machine and the number of times of weighing.   
     
     
         2 . The automatic sand abrasion device according to  claim 1 , wherein an upper port of the falling pipe is provided with a sand baffle plate, and the sand baffle plate is conical. 
     
     
         3 . The automatic sand abrasion device according to  claim 2 , wherein the upper port of the falling pipe passes through a bottom of the upper funnel and extends into the upper funnel by a certain length; a ringlike sand speed reduction chamfering ditch is formed at a joint of the falling pipe and the upper funnel; and an included angle between the upper funnel and a wall of the falling pipe extending thereinto is 50°+/−1°. 
     
     
         4 . The automatic sand abrasion device according to  claim 1 , wherein one side of the transport belt comprises a rough plane, and the other side of the transport belt is made into an arc-shaped bucket; and the arc-shaped bucket drives an amount of sand to move towards an upper end of the upper funnel, and the amount of sand falls into the upper funnel from the arc-shaped bucket above the upper funnel. 
     
     
         5 . The automatic sand abrasion device according to  claim 1 , wherein a falling pipe hand grab is mounted on the experiment table supporting frame; the falling pipe hand grab extends into the falling pipe; the falling pipe is fastened on the falling pipe hand grab; and the sand collection inverted bucket is welded onto the experiment table supporting frame through a connection rod. 
     
     
         6 . The automatic sand abrasion device according to  claim 1 , wherein a holder frame for mounting the automatic weighing machine is disposed on the experiment table supporting frame. 
     
     
         7 . The automatic sand abrasion device according to  claim 1 , wherein a vent is formed in an upper side surface of the shell. 
     
     
         8 . The automatic sand abrasion device according to  claim 1 , wherein four groups of the guide rollers are provided and respectively mounted on left and right sides of an upper end and left and right sides of a lower end of the transport belt. 
     
     
         9 . The automatic sand abrasion device according to  claim 1 , wherein a transport belt locating slot is formed in a bottom of the shell, and a transport belt locating rod is mounted at an upper part of the shell to prevent the transport belt from falling off. 
     
     
         10 . The automatic sand abrasion device according to  claim 1 , wherein a fixed sleeve and a fastening bolt are disposed on the experiment table supporting frame; and the object frame supporting rod of the experiment object frame is fixed in the fixed sleeve on the experiment table supporting frame through the fastening bolt. 
     
     
         11 . The automatic sand abrasion device according to  claim 1 , wherein a side wall of the shell is provided with a transport belt tightening device. 
     
     
         12 . The automatic sand abrasion device according to  claim 1 , wherein six object fixing bolts on the sample working frame are uniformly distributed along a fixed surface of the experiment object frame. 
     
     
         13 . The automatic sand abrasion device according to  claim 1 , wherein a travel limiting switch is mounted on the guide rail slot to determine a travel of the horizontal back and forth motion of the automatic weighing machine. 
     
     
         14 . The automatic sand abrasion device according to  claim 1 , wherein the upper port of the falling pipe passes through a bottom of the upper funnel and extends into the upper funnel by a certain length; a ringlike sand speed reduction chamfering ditch is formed at a joint of the falling pipe and the upper funnel; and an included angle between the upper funnel and a wall of the falling pipe extending thereinto is 50°+/−1°.