Diagonal draw bar adjusting device of forklift
By designing a forklift inclined tie rod adjustment device and utilizing self-lubricating spherical bearings and upper and lower connecting rods with threaded connections, the forklift inclined tie rod is easily adjusted and reliably connected, thus solving the problems of complex assembly and low precision, reducing costs and increasing service life.
Patent Information
- Application Number
- CN202422807583.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-11-18
AI Technical Summary
The existing forklift inclined tie rod assembly and adjustment is complicated, and the adjustment margin is insufficient, resulting in assembly difficulties, high processing precision and cost, and poor stress state.
A forklift inclined tie rod adjustment device is designed, which includes an inclined tie rod assembly, a body system, an operating driving platform and a lifting system. The inclined tie rod is reliably fixed and adjusted through self-lubricating spherical bearings and upper and lower connecting rods with threaded connections. Simple adjustment is achieved by using forward and reverse rotation nuts.
The assembly process of the diagonal tie rod is simplified, the processing cost is reduced, the assembly accuracy and the service life of the components are improved, and the free rotation of the diagonal tie rod within an inclination angle of 15° is ensured.
Smart Images
Figure CN223422322U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of fork truck, especially fork truck inclined pull rod adjusting device. BACKGROUND
[0002] The existing fork truck inclined pull rod assembly adjustment mode has problems, the inclined pull rod adjustment is complex, the adjustment allowance is insufficient, reliable fixed connection cannot be realized, the machining precision requirement of the outer door frame and the inclined pull rod mounting hole on the vehicle body of the hoisting system, the machining cost is high, if the machining requirement does not satisfy the requirement, the inclined pull rod assembly will be difficult, and the stress state is poor. UTILITY MODEL CONTENTS
[0003] The utility model aims at at least in a certain extent solves one of the technical problems in the prior art. For this reason, one purpose of the utility model is to propose fork truck inclined pull rod adjusting device, adjusts more conveniently, reduces manufacturing cost, improves assembly precision and component service life.
[0004] According to the fork truck inclined pull rod adjusting device provided by the utility model, the fork truck inclined pull rod adjusting device comprises an inclined pull rod assembly, a vehicle body system, an operation driving platform and a hoisting system, the vehicle body system is installed with the hoisting system at one end, the hoisting system is installed with the operation driving platform at one end, and a pair of inclined pull rod assemblies are fixed between the vehicle body system and the hoisting system.
[0005] The inclined pull rod assembly comprises an inclined pull rod, the left and right ends of the inclined pull rod are fixed with upper connecting rods and lower connecting rods, the upper connecting rod is fixed with a door frame connecting joint at the end away from the inclined pull rod, a self-lubricating joint bearing is assembled in the door frame connecting joint, the outer surfaces of the upper connecting rod and the lower connecting rod are all sleeved with right-hand thread nuts which are screw-connected with them, and the outer surface of the lower connecting rod is sleeved with a left-hand thread nut which is next to the inclined pull rod.
[0006] Preferably, the end surface of the lower connecting rod away from the inclined pull rod is sleeved with a fixed nut which is screw-connected with it, and the outer surface of the lower connecting rod is sleeved with a vehicle frame connecting joint between the right-hand thread nut and the fixed nut.
[0007] Preferably, the door frame connecting joint and the upper connecting rod are inserted with a fastening screw for fixing.
[0008] Preferably, the left and right ends of the upper connecting rod and the lower connecting rod are all machined with external threads, and the middle of the upper connecting rod and the lower connecting rod is all machined with a hexagonal plane.
[0009] Preferably, the left and right ends of the inclined pull rod are machined with internal threads.
[0010] Preferably, the outer opening of the fixing nut is sized to fit within the inner portion of the frame connection joint.
[0011] Preferably, the self-lubricating spherical plain bearing can rotate within an inclination angle of 15°.
[0012] The beneficial effects of the present invention are:
[0013] 1. The extension lengths of the upper connecting rod and the lower connecting rod can be adjusted separately to adjust the assembly of the diagonal tie rod assembly. The adjustment mechanism is simple to manufacture and assemble. The adjustment margin is maximized within the existing space through the accumulated adjustment margins of the upper connecting rod and the lower connecting rod. In addition, only the forward-screwing nut, the directional nut and the machined surface on the diagonal tie rod need to be fixed with a wrench for easy adjustment, which makes adjustment more convenient and enables reliable connection of the diagonal tie rod.
[0014] 2. Through the self-lubricating key bearings, free rotation within an inclination angle of 15° can be achieved. The processing accuracy requirements for the diagonal tie rod mounting holes on the outer mast of the lifting system and the body system are low, which reduces the processing and manufacturing costs. It cleverly solves the problems of difficult assembly of the diagonal tie rod and poor stress state, and avoids unreasonable stress on the diagonal tie rod after assembly, which affects the service life of the components. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the forklift inclined tie rod adjustment device proposed by the utility model.
[0016] Figure 2 This is a schematic structural diagram of the inclined tie rod assembly of the inclined tie rod adjustment device for forklifts proposed by the present invention.
[0017] Figure 3 This is a schematic diagram of the front end structure of the inclined tie rod assembly of the inclined tie rod adjustment device for forklifts proposed by the present invention.
[0018] Figure 4 This is a schematic diagram of the rear end structure of the inclined tie rod assembly of the inclined tie rod adjustment device for forklifts proposed by the present invention.
[0019] In the figure: 1. Diagonal brace assembly; 2. Body system; 3. Operating and driving platform; 4. Lifting system; 101. Upper connecting rod; 102. Fastening screw; 103. Mast connection joint; 104. Self-lubricating spherical bearing; 105. Forward rotation nut; 106. Diagonal brace; 107. Counter-rotation nut; 108. Lower connecting rod; 109. Fixing nut; 110. Frame connection joint. DETAILED DESCRIPTION
[0020] Reference Figure 1-4, a forklift inclined tie rod adjustment device, comprising an inclined tie rod assembly 1, a body system 2, an operating driving platform 3 and a lifting system 4, wherein the body system 2 is mounted on one end of the body system 2, and the lifting system 4 is mounted on one end of the lifting system 4. A pair of inclined tie rod assemblies 1 are fixed between the body system 2 and the lifting system 4;
[0021] The inclined tie rod assembly 1 includes an inclined tie rod 106, and the left and right ends of the inclined tie rod 106 are threadedly connected to the upper connecting rod 101 and the lower connecting rod 108. The end of the upper connecting rod 101 away from the inclined tie rod 106 is fixed with a portal connecting joint 103, and the interior of the portal connecting joint 103 is equipped with a self-lubricating joint bearing 104. The outer surfaces of the upper connecting rod 101 and the lower connecting rod 108 are both sleeved with a forward rotation nut 105 threadedly connected thereto, and the outer surface of the lower connecting rod 108 is sleeved with a reverse rotation nut 107 close to the inclined tie rod 106. By rotating the upper connecting rod 1 01 and the lower connecting rod 108, the upper connecting rod 101 and the lower connecting rod 108 can be pulled out and inserted from the inside of the inclined rod 106, so that the protruding length of the upper connecting rod 101 and the lower connecting rod 108 can be adjusted respectively. The adjustment mechanism is simple to manufacture and assemble. Through the cumulative adjustment margin of the upper connecting rod 101 and the lower connecting rod 108, the adjustment margin is magnified to the greatest extent within the existing space, and then the upper connecting rod 101 is fixed in position by the forward-rotating nut 105, and the lower connecting rod 108 is fixed in position by the reverse-rotating nut 107.
[0022] The surface of one end of the lower connecting rod 108 away from the diagonal rod 106 is provided with a fixing nut 109 threadedly connected to it, and the outer surface of the lower connecting rod 108 is provided with a frame connection joint 110 located between the forward-rotating nut 105 and the fixing nut 109. The frame connection joint 110 and the lower connecting rod 108 are fixedly connected through the forward-rotating nut 105 and the fixing nut 109.
[0023] A fastening screw 102 is inserted between the door frame connection joint 103 and the upper connecting rod 101 for fixing. The door frame connection joint 103 is reliably fixed on the upper connecting rod 101 by the fastening screw 102.
[0024] External threads are processed on the left and right ends of the upper connecting rod 101 and the lower connecting rod 108, internal threads are processed on the left and right ends of the diagonal rod 106, and hexagonal planes are processed in the middle of the upper connecting rod 101 and the lower connecting rod 108, which can realize the assembly size adjustment of the upper connecting rod 101 and the lower connecting rod 108, and the outer surface thereof is processed with a flat surface, which can be conveniently tightened with a movable wrench during assembly.
[0025] The outer opening crotch size of the fixing nut 109 is clamped in the inner file of the frame connecting joint 110, so that the problem of the follow-up rotation of the fixing nut 109 during fastening is ingeniously solved.
[0026] The self-lubricating joint bearing 104 can rotate within an inclination angle of 15°, and can effectively solve the problem of the spatial size deviation of the hoisting system and the vehicle body system caused by the manufacturing and assembly errors.
[0027] During use, the device can adjust the extension lengths of the upper connecting rod 101 and the lower connecting rod 108 respectively to assemble and adjust the stay rod assembly 1. The adjustment mechanism is simple to manufacture and assemble. Through the cumulative adjustment margin of the upper connecting rod 101 and the lower connecting rod 108, the adjustment margin is large. In addition, only the clockwise nut 105, the counterclockwise nut 107 and the flat surface machined on the stay rod 106 are needed to be fixed by a wrench during adjustment, so that the adjustment is more convenient. The stay rod 106 can be reliably fixed and connected. Meanwhile, the upper connecting rod 101 is assembled with the self-lubricating joint bearing 104, so that the upper connecting rod 101 can freely rotate within an inclination angle of 15°.
Claims
1. The forklift inclined tie rod adjustment device is characterized by: The vehicle comprises a diagonal tie rod assembly (1), a vehicle body system (2), an operating driving platform (3) and a lifting system (4), wherein the lifting system (4) is installed at one end of the vehicle body system (2), the operating driving platform (3) is installed at one end of the lifting system (4), and a pair of diagonal tie rod assemblies (1) are fixed between the vehicle body system (2) and the lifting system (4); The inclined tie rod assembly (1) includes an inclined tie rod (106), and an upper connecting rod (101) and a lower connecting rod (108) are fixed to the left and right ends of the inclined tie rod (106), and a portal connecting joint (103) is fixed to the end of the upper connecting rod (101) away from the inclined tie rod (106), and the interior of the portal connecting joint (103) is equipped with a self-lubricating joint bearing (104), and the outer surfaces of the upper connecting rod (101) and the lower connecting rod (108) are both provided with a forward-rotating nut (105) threadedly connected thereto, and the outer surface of the lower connecting rod (108) is provided with a reverse-rotating nut (107) adjacent to the inclined tie rod (106).
2. The forklift inclined tie rod adjustment device according to claim 1, characterized in that: The surface of one end of the lower connecting rod (108) away from the inclined rod (106) is sleeved with a fixing nut (109) threadedly connected thereto, and the outer surface of the lower connecting rod (108) is sleeved with a frame connection joint (110) located between the forward-spinning nut (105) and the fixing nut (109).
3. The forklift inclined tie rod adjustment device according to claim 1, characterized in that: A fastening screw (102) for fixing is inserted between the portal connection joint (103) and the upper connecting rod (101).
4. The forklift inclined tie rod adjustment device according to claim 1, characterized in that: The left and right ends of the upper connecting rod (101) and the lower connecting rod (108) are both processed with external threads, and the middle of the upper connecting rod (101) and the lower connecting rod (108) are both processed with a hexagonal plane.
5. The forklift inclined tie rod adjustment device according to claim 1, characterized in that: Internal threads are machined on the left and right ends of the inclined tie rod (106).
6. The forklift inclined tie rod adjustment device according to claim 2, characterized in that: The outer opening size of the fixing nut (109) is clamped in the inner portion of the frame connection joint (110).
7. The forklift inclined tie rod adjustment device according to claim 1, characterized in that: The self-lubricating spherical bearing (104) can rotate within an inclination angle of 15°.