Lifting workstation

Abstract

A lifting workstation includes a working platform, a base and a lifting assembly. The lifting assembly includes at least one set of lifting arms, each set of lifting arms includes a first arm and a second arm which are pivotally connected at middle to be in an X-shape. Each set of lifting arms includes synchronization module(s) disposed on at least one side of each set of lifting arms, which includes a hollow housing, a synchronization mechanism arranged in the housing and a slideway arranged on the housing. The slideway is in sliding cooperation with the two ends of one same side of the first arm and the second arm, and the synchronization mechanism can make the two ends of one same side of the first arm and the second arm move toward each other or move away from each other synchronously along a length direction of the slideway.

What is claimed is: 
     
         1 . A lifting workstation, comprising:
 a working platform;   a base that sits on an existing desk or an existing working surface; and   a lifting assembly configured to adjust a height of the working platform relative to the base, wherein the lifting assembly connects the working platform and the base, the lifting assembly comprises at least one set of lifting arms, each set of lifting arms comprises a first arm and a second arm, the first arm and the second arm are pivotally connected at middle to be in an X-shape, a first end of the first arm and a first end of the second arm are respectively slidably connected to the working platform, and a second end of the first arm and a second end of the second arm are respectively slidably connected to the base;   wherein, each set of lifting arms comprises at least one synchronization module, and the at least one synchronization module is arranged between two ends of one same side of the first arm and the second arm of each set of the lifting arms, the two ends of one same side of the first arm and the second arm of each set of the lifting arms comprise the first end of the first arm and the first end of the second arm, as well as the second end of the first arm and the second end of the second arm; the synchronization module comprises a hollow housing, a synchronization mechanism arranged in the housing and a slideway arranged on the housing, the slideway is configured to be in sliding cooperation with the two ends of one same side of the first arm and the second arm, and the synchronization mechanism is configured to make the two ends of one same side of the first arm and the second arm move toward each other or move away from each other synchronously along a length direction of the slideway.   
     
     
         2 . The lifting workstation according to  claim 1 , wherein the synchronization mechanism comprises a first sliding member, a second sliding member and a synchronization gear, the first sliding member and the second sliding member move toward or move away from each other along their length directions, and the first sliding member is provided with a first rack teeth portion along its length direction, and the second sliding member is provided with a second rack teeth portion along its length direction; the synchronization gear is located between the first sliding member and the second sliding member and is rotatably connected to the housing, and the synchronization gear is respectively engaged with the first rack teeth portion and the second rack teeth portion; the first sliding member and the second sliding member are configured to be respectively connected to the two ends of one same side of the first arm and the second arm of each set of the lifting arms. 
     
     
         3 . The lifting workstation according to  claim 2 , wherein a direction of a shaft of the synchronization gear is parallel to a horizontal plane where the working platform is located. 
     
     
         4 . The lifting workstation according to  claim 3 , wherein the lifting assembly comprises two sets of lifting arms, and the lifting workstation further comprises at least one synchronization rod, the synchronization rod is arranged between the two sets of lifting arms, and two ends of the synchronization rod are respectively connected to two synchronization gears of two synchronization mechanisms of the two sets of lifting arms. 
     
     
         5 . The lifting workstation according to  claim 4 , wherein an insertion hole for the synchronization rod to be inserted is disposed at a center of each synchronization gear; both ends of the synchronization rod are respectively inserted into the insertion holes of the two synchronization gears of the two sets of lifting arms and are circumferentially limited with the insertion holes. 
     
     
         6 . The lifting workstation according to  claim 1 , wherein the synchronization modules are arranged both between the first end of the first arm and the first end of the second arm of each set of lifting arms as well as between the second end of the first arm and the second end of the second arm of each set of lifting arms. 
     
     
         7 . The lifting workstation according to  claim 1 , wherein the lifting assembly comprises two sets of lifting arms, and the lifting workstation further comprises a power element, which is connected between the working platform and the base to provide lifting force for the working platform to rise. 
     
     
         8 . The lifting workstation according to  claim 7 , wherein a first end of the power element is rotatably connected to the working platform or the base, and a second end of the power element is rotatably connected to the lifting assembly;
 or the first end of the power element is rotatably connected to the working platform, and the second end is rotatably connected to the base;   or the first end of the power element is rotatably connected to the first arm of one set of lifting arms and the second end of the power element is rotatably connected to the second arm of the same set of lifting arms;   wherein the power element is one of a gas spring, a hydraulic cylinder and a linear actuator.   
     
     
         9 . The lifting workstation according to  claim 8 , wherein a first connecting rod is connected between the first arms of the two sets of lifting arms, and a second connecting rod is connected between the second arms of the two sets of lifting arms, the first end of the power element is rotatably connected to the first connecting rod, and the second end of the power element is rotatably connected to the second connecting rod. 
     
     
         10 . The lifting workstation according to  claim 2 , further comprising at least one locking mechanism configured to lock the working platform at various heights. 
     
     
         11 . The lifting workstation according to  claim 10 , wherein the locking mechanism comprises a first pin connected to one arm of one set of lifting arms and a locking plate connected to the other arm of the same set of lifting arms, and the locking plate is provided with a plurality of first pin holes distributed circumferentially around a pivot at middle of the set of lifting arms, and a wrench is rotatably connected to the working platform or the base, and the wrench is connected to the first pin through a cable and is configured to control the first pin to be inserted into or disengaged from the first pin holes. 
     
     
         12 . The lifting workstation according to  claim 10 , wherein the locking mechanism comprises a second pin connected to the working platform or the base, the first sliding member or the second sliding member is provided with a plurality of second pin holes distributed along its length direction at intervals, a driving handle is rotatably connected to the working platform or the base, the driving handle is connected to the second pin through a cable and is configured to control the second pin to insert into or disengaged from the second pin holes. 
     
     
         13 . The lifting workstation according to  claim 10 , wherein the locking mechanism comprises a locking toothed disk coaxially connected to the synchronization gear, and the locking toothed disk is provided with a plurality of limiting notches along its circumferential direction; a bracket is connected to the working platform or the base, a limiting pin which can be inserted into or disengaged from the limiting notches is connected to the bracket, an elastic member is connected to the bracket, the elastic member is connected to the limiting pin and is configured to make the limiting pin constantly have a movement tendency to engage with the limiting notches; an unlocking handle is connected to the working platform or the base, the unlocking handle is connected to the limiting pin and is configured to control the limiting pin to disengage from the limiting notches. 
     
     
         14 . The lifting workstation according to  claim 2 , wherein the first sliding member is provided with a first limiting portion which is limited by the synchronization gear, and the first limiting portion is located at an inner end of the first rack teeth portion; the second sliding member is provided with a second limiting portion which is limited by the synchronization gear, and the second limiting portion is located at an inner end of the second rack teeth portion. 
     
     
         15 . The lifting workstation according to  claim 1 , wherein a detachable keyboard tray is connected to a side of the working platform close to users. 
     
     
         16 . The lifting workstation according to  claim 1 , wherein the synchronization mechanism comprises a first screw rod, a second screw rod and a support, an axis of the first screw rod and an axis of the second screw rod are arranged in parallel and configured to move toward or away from each other along their axial directions; a first rotating block threadedly connected to the first screw rod and a second rotating block threadedly connected to the second screw rod are rotatably connected to the support, the first rotating block and the second rotating block are rotatably matched to rotate at a same angle, and the first screw rod and the second screw rod are configured to be respectively connected to the two ends of one same side of the first arm and the second arm of a same set of lifting arms. 
     
     
         17 . The lifting workstation according to  claim 1 , wherein the synchronization mechanism comprises a first sliding block, a second sliding block and a fixed base, the first sliding block and the second sliding block are configured to move toward or move away from each other along a length direction of a guiding slideway arranged in the housing; the fixed base is connected to the base, and a lead screw is connected to the fixed base, and the lead screw has threads of opposite directions on two sides of extending from the fixed base, the first sliding block and the second sliding block are respectively threadedly connected to two sides, which extend from the fixed base, of the lead screw, and the first sliding block and the second sliding block are configured to be respectively connected to the two ends of one same side of the first arm and the second arm of one set of lifting arms. 
     
     
         18 . The lifting workstation according to  claim 5 , further comprising a power element configured to provide lifting force for the working platform to rise, and a power output end of the power element being connected to the synchronization rod in a transmission manner. 
     
     
         19 . The lifting workstation according to  claim 18 , wherein a lower travel trigger is connected between the working platform and the base, and the lower travel trigger is electrically connected to the power element; when the working platform is lowered to a lowest height position or close to the lowest height position, the lower travel trigger is triggered by abutting against the working platform or the base to control the power element to stop working.