A tailstock positioning device for forklift frame assembly welding

Abstract

The utility model relates to the field of forklift welding, specifically disclose a tailstock positioning device for forklift frame group welding, including drive base, be equipped with the suspension bottom plate on the drive base, be equipped with drive structure in the drive base, drive structure can drive the movement of suspension bottom plate, the top surface left and right sides of suspension bottom plate are equipped with lateral positioning assembly, the front and back sides of suspension bottom plate are equipped with the pressure joint positioning group, the utility model discloses through drive structure drives suspension bottom plate and moves back and forth, can adapt to the group welding of different size forklift frame, while lateral positioning assembly can be to the left and right direction limiting of tailstock, and utilize the pressure joint positioning group to tailstock on rear axle mounting plate positioning, realized to the multidirectional limiting of forklift tailstock, the convenience in tailstock group welding structure accessory, positioning accuracy is high, and the assembly efficiency is high, can adapt to the assembly welding of different size frame, and the versatility is strong.

Description

Technical Field

[0001] This utility model relates to the field of forklift welding, specifically a tailstock positioning device for welding forklift chassis assembly. Background Technology

[0002] As a crucial handling equipment in logistics transportation, the forklift's frame is one of its core load-bearing structural components. It is typically welded from multiple steel plates and profiles and mainly includes the left and right fuel tank plates, the tailstock, mudguards, the front axle mounting plate, and structural accessories. The forklift tailstock is welded to one end of the left and right fuel tank plates. After the main components of the tailstock are welded in the preceding processes, the tailstock needs to be welded to the left and right fuel tank plates, and structural accessories are then welded onto it. Therefore, the positioning of the forklift tailstock is extremely important.

[0003] Patent application number CN202223170356.9 discloses a welding fixture for a forklift tailstock, including a positioning component for defining the position of the workpiece. The positioning component includes a base plate, two support plates, a telescopic clamping mechanism that extends and retracts in the vertical direction, and a counterweight positioning component. Two first positioning blocks and a rear axle positioning block are provided on the base plate. The two ends of the curved plate on the workpiece are respectively positioned on the top of the two first positioning blocks. The number of rear axle positioning blocks is equal to the number of rear axle mounting plates on the workpiece. By setting the base plate, support plates, telescopic clamping mechanism, and counterweight positioning component, the various components of the workpiece are positioned simultaneously. The various components of the workpiece are first assembled and positioned to form the prototype of the workpiece, and then the various components of the workpiece are welded and fixed together. That is, the workpiece only needs to be positioned once before it is formed into a finished product, thereby reducing the error after the forklift tailstock is welded and improving the yield rate of welded forklift tailstocks.

[0004] However, during forklift frame welding, the completed tailstock needs to be welded together with the left and right fuel tank plates on the forklift. At the same time, structural components are welded onto the tailstock. Forklift frames vary in size, and it is difficult to weld forklift frames of different sizes using a fixed-structure welding fixture. Therefore, this application proposes a tailstock positioning device for forklift frame assembly welding to solve the above problems. Utility Model Content

[0005] To address the existing problems, this utility model provides a tailstock positioning device for welding forklift frames, which can effectively solve the problems mentioned in the background art.

[0006] To solve the above problems, the present invention adopts the following technical solution: A tailstock positioning device for welding forklift frames includes a drive base, a suspension base plate on the drive base, a drive structure inside the drive base, the drive structure being able to move the suspension base plate, lateral positioning components on the left and right sides of the top surface of the suspension base plate, and pressing positioning groups on the front and rear sides of the suspension base plate.

[0007] As a further embodiment of this utility model: the lateral positioning group includes uprights symmetrically arranged on both sides of the suspension base plate, and positioning plates are fixed on the inner sides of both uprights. A first cylinder is installed on the positioning plate, and a pressure block is fixed on the telescopic end of the first cylinder. A pressing column is fixed on the pressure block.

[0008] As a further improvement of this utility model: a first positioning block is fixed on the outer side of each of the two positioning plates, and a second positioning block is provided at one end of the positioning plate in the front-rear direction. The first positioning block and the second positioning block are used to limit the horizontal direction of the tailstock side plate.

[0009] As a further embodiment of this utility model: two guide rails are fixed on the drive base, and a servo motor driven screw structure is provided between the guide rails. A slide block is threaded onto the screw structure. The two sides of the slide block are slidably connected to the guide rails through sliders. A support base is fixedly connected to the bottom of the suspension base plate, and the support base is fixedly connected to the slide block.

[0010] As a further improvement of this utility model: U-shaped covers are fixed on both sides of the slide block, and the U-shaped covers are slidably connected to the drive base.

[0011] As a further embodiment of this utility model: the pressing and positioning assembly includes positioning posts located on both the front and rear ends of the suspension base plate, and the side of the positioning post is provided with a second cylinder-driven L-shaped part. The positioning post is used to insert and position the mounting hole on the rear axle mounting plate on the tail frame, and the second cylinder-driven L-shaped part presses the rear axle mounting plate.

[0012] As a further embodiment of this utility model: a rotary motor is installed at the telescopic end of the second cylinder, and the L-shaped component is installed on the rotary motor.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model drives the suspension base plate to move back and forth through the drive structure, which can adapt to the assembly and welding of forklift frames of different sizes. At the same time, the lateral positioning component can limit the left and right directions of the tail frame, and the pressing positioning group is used to position the rear axle mounting plate on the tail frame, realizing multi-directional limiting of the forklift tail frame. This facilitates the assembly and welding of structural components on the tail frame, with high positioning accuracy, high assembly efficiency, and strong versatility, adaptable to the assembly and welding of frames of different sizes. Attached Figure Description

[0014] Figure 1 A three-dimensional schematic diagram of the overall structure of a tailstock positioning device used for welding forklift frames; Figure 2 A schematic plan view of the overall structure of a tailstock positioning device for welding forklift frames; Figure 3 This is a schematic diagram of the internal structure of the drive base in a tailstock positioning device used for welding forklift frames. Figure 4 This is a schematic diagram of the lateral positioning component and the press-fit positioning group in a tailstock positioning device used for welding forklift frames. Figure 5 This is a three-dimensional structural diagram of the forklift tailstock in this utility model; Figure 6 This is a schematic diagram of the planar structure of the forklift tailstock in this utility model; Figure 7 This is a schematic diagram illustrating the positioning and fixing of the forklift tailstock according to this utility model.

[0015] In the diagram: 1. Drive base; 11. Guide rail; 12. Servo motor; 13. Screw structure; 14. Slide block; 15. Slider; 16. U-shaped cover; 2. Suspension base plate; 3. Lateral positioning assembly; 31. Stand; 32. Positioning plate; 33. First cylinder; 34. Pressure block; 35. Pressing post; 36. First positioning block; 37. Second positioning block; 4. Pressing positioning assembly; 41. Positioning post; 42. Second cylinder; 43. L-shaped part; 44. Rotary motor; 5. Support base; 100. Forklift tailstock; 101. Crossbeam plate; 102. U-shaped ear plate; 103. End plate; 104. Diagonal brace plate; 105. Bend plate; 106. Vertical plate; 107. Horizontal plate; 108. Mounting hole. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Combination Figures 1 to 7 This embodiment provides a tailstock positioning device for welding forklift frames, which includes a drive base 1, a suspension base plate 2 on the drive base 1, a drive structure inside the drive base 1, the drive structure being able to drive the suspension base plate 2 to move, lateral positioning components 3 on the left and right sides of the top surface of the suspension base plate 2, and pressing positioning groups 4 on the front and rear sides of the suspension base plate 2.

[0018] In this example, the forklift tail carriage 100 includes a crossbeam plate 101. Both ends of the crossbeam plate 101 are provided with U-shaped lugs 102, and both ends of the U-shaped lugs 102 are provided with mounting holes 108. Both ends of the crossbeam plate 101 are provided with end plates 103 that fit against the U-shaped lugs 102. Symmetrical diagonal bracing plates 104 are provided on both sides of the crossbeam plate 101. Vertical plates 106 are fixed to the diagonal bracing plates 104. A horizontal plate 107 is fixed to the outer side of the vertical plate 106. Two symmetrical curved plates 105 are fixed to one end plate 103 of the crossbeam plate 101, and the curved plates 105 are fixed to the vertical plate 106. The welding fixture provided in this embodiment is used to precisely clamp the various components of the forklift tail carriage 100 to improve welding accuracy.

[0019] Furthermore, the lateral positioning assembly 3 includes uprights 31 symmetrically arranged on both sides of the suspension base plate 2. Positioning plates 32 are fixed to the inner surfaces of both uprights 31. A first cylinder 33 is mounted on the positioning plate 32, and a pressure block 34 is fixed to the telescopic end of the first cylinder 33. A pressing post 35 is fixed to the pressure block 34. First positioning blocks 36 are fixed to the outer surfaces of both positioning plates 32, and a second positioning block 37 is provided at one end of the positioning plate 32 in the front-rear direction. The inner surfaces of the positioning plates 32 on the two uprights 31 are in contact with the upright plate 106 of the tailstock, thereby providing lateral positioning of the tailstock. Simultaneously, the first positioning block 36 and the second positioning block 37 are used to limit the horizontal movement of the lateral cross plate 107 of the tailstock. At the same time, the first cylinder 33 drives the pressing post 35 on the pressure block 34 to press against the cross plate 107, achieving multi-directional positioning of the cross plate 107 on the tailstock and improving welding accuracy.

[0020] Furthermore, two guide rails 11 are fixed on the drive base 1, and a lead screw structure 13 driven by a servo motor 12 is provided between the guide rails 11. The servo motor 12 and the lead screw structure 13 constitute the drive structure. A slide block 14 is threadedly connected to the lead screw structure 13. The two sides of the slide block 14 are slidably connected to the guide rails 11 through sliders 15. A support base 5 is fixedly connected to the bottom of the suspension base plate 2. The support base 5 is fixedly connected to the slide block 14. The servo motor 12 drives the slide block 14 to move back and forth through the lead screw structure 13, thereby driving the tailstock to move back and forth. U-shaped covers 16 are fixed on both sides of the slide block 14. The U-shaped covers 16 are slidably connected to the drive base 1 to ensure internal sealing and prevent welding dust from affecting the internal structure.

[0021] Furthermore, the pressing and positioning assembly 4 includes four positioning posts 41 located on both the front and rear ends of the suspension base plate 2, and a second cylinder 42 drives an L-shaped component 43 on the side of each positioning post 41. The positioning posts 41 are used to insert and position themselves into the mounting holes 108 on the rear axle mounting plate on the tail frame, and the second cylinder 42 drives the L-shaped component 43 to press the rear axle mounting plate. Furthermore, a rotary motor 44 is installed at the telescopic end of the second cylinder 42, and the L-shaped component 43 is mounted on the rotary motor 44. The rotary motor 44 drives the L-shaped component 43 to rotate, so as to facilitate the L-shaped component 43 pressing the rear axle mounting plate.

[0022] The working principle of this utility model is as follows: the drive structure drives the suspension base plate 2 to move back and forth, which can adapt to the assembly and welding of forklift frames of different sizes. At the same time, the lateral positioning component can limit the left and right directions of the tail frame, and the pressing positioning group 4 is used to position the rear axle mounting plate on the tail frame, realizing multi-directional limiting of the forklift tail frame 100. This facilitates the assembly and welding of structural parts on the tail frame, with high positioning accuracy, high assembly efficiency, and strong versatility, adaptable to the assembly and welding of frames of different sizes.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tailstock positioning device for welding forklift frames, characterized in that, The device includes a drive base, on which a suspension base plate is provided. A drive structure is provided inside the drive base, which can drive the suspension base plate to move. Lateral positioning components are provided on the left and right sides of the top surface of the suspension base plate, and pressing positioning groups are provided on the front and rear sides of the suspension base plate.

2. The tailstock positioning device for forklift frame assembly welding according to claim 1, characterized in that, The lateral positioning assembly includes uprights symmetrically arranged on both sides of the suspension base plate. Positioning plates are fixed on the inner sides of both uprights. A first cylinder is installed on the positioning plate. A pressure block is fixed to the telescopic end of the first cylinder. A pressing post is fixed on the pressure block.

3. A tailstock positioning device for forklift frame assembly welding according to claim 2, characterized in that, A first positioning block is fixed to the outer side of each of the two positioning plates, and a second positioning block is provided at one end of the positioning plate in the front-rear direction. The first positioning block and the second positioning block are used to limit the horizontal direction of the tailstock side plate.

4. A tailstock positioning device for forklift frame assembly welding according to claim 1, characterized in that, Two guide rails are fixed on the drive base, and a lead screw structure driven by a servo motor is provided between the guide rails. A slide block is threaded onto the lead screw structure. The two sides of the slide block are slidably connected to the guide rails through sliders. A support base is fixedly connected to the bottom of the suspension base plate, and the support base is fixedly connected to the slide block.

5. A tailstock positioning device for forklift frame assembly welding according to claim 4, characterized in that, The slide block is fixed with U-shaped covers on both sides, and the U-shaped covers are slidably connected to the drive base.

6. A tailstock positioning device for forklift frame assembly welding according to claim 1, characterized in that, The pressing and positioning assembly includes positioning posts located on both the front and rear ends of the suspension base plate, and the side of the positioning post is provided with a second cylinder-driven L-shaped part. The positioning post is used to insert and position the mounting hole on the rear axle mounting plate on the tail frame, and the second cylinder-driven L-shaped part presses the rear axle mounting plate.

7. A tailstock positioning device for forklift frame assembly welding according to claim 6, characterized in that, A rotary motor is installed at the telescopic end of the second cylinder, and the L-shaped component is mounted on the rotary motor.

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