Lifting machine chassis assembling and welding tool

Abstract

The utility model relates to the technical field of welding tools, and particularly discloses an elevator underframe assembly welding tool which comprises a welding table and positioning mechanisms, the positioning mechanisms are arranged on the periphery of the welding table, each positioning mechanism comprises a push rod, and a positioning block and a guide rod are arranged on the two sides of the end of each push rod respectively. A second threaded rod rotationally connected with the push rod is arranged between the two guide rods, a handle is arranged at the end of the second threaded rod, guide sleeves matched with the guide rods and a supporting block in threaded fit with the second threaded rod are arranged on the side wall of the welding table, receding grooves perpendicular to each other are formed in the upper end of the welding table, and a first threaded rod is arranged in each receding groove. An ejection block matched with the first threaded rod is arranged in the receding groove in a sliding fit mode, and the ejection block is matched with the positioning block to clamp and fix the bottom frame. The chassis welding positioning device is suitable for welding positioning of chassis of different sizes, the using universality is improved, and the manufacturing cost and the tool storage space are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding jigs, in particular to a welding jig for assembling a bottom frame of a lift. Background Art

[0002] A lift and a lifting operation platform are multifunctional lifting mechanical devices, which can be divided into fixed type, mobile type, guide rail type, articulated boom type, scissor type, chain type, loading and unloading platform, etc. Generally, a scissor lift mainly consists of a base, a bracket and a table top. The base is composed of a rectangular bottom frame, a side plate, support legs, etc. The bottom frame is a rectangular frame structure welded by four steel pipes. In order to improve the assembly efficiency of the bottom frame and ensure the stability of the steel pipes during the welding process, jigs are often used to position the steel pipes.

[0003] In the existing bottom frame welding jigs, positioning blocks are mostly arranged on the inner or outer side of the steel pipes. The steel pipes are positioned by leaning against one side of the positioning blocks. The positioning blocks are used to prevent the steel pipes from tilting during the welding process and improve the assembly speed of the bottom frame at the same time. However, most of the positioning blocks of the existing jigs are fixed structures, that is, one jig can only be used for welding one type of bottom frame, lacking versatility. A separate jig needs to be made for each type of bottom frame, which not only occupies more workshop space but also increases the manufacturing cost. Content of the Utility Model

[0004] Aiming at the above-mentioned deficiencies of the existing technology, the utility model provides a welding jig for assembling a bottom frame of a lift, in which the positions of the positioning mechanism and the top block can be adjusted according to the size of the bottom frame, which is applicable to the welding positioning of bottom frames of different sizes, increases the versatility of use, solves the problem that a special welding jig needs to be manufactured for each size of the bottom frame, and saves the manufacturing cost and the storage space of the jig.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A welding jig for assembling a bottom frame of a lift includes a welding table and a positioning mechanism. The positioning mechanisms are arranged on the four sides of the welding table. The positioning mechanism includes a push rod. On both sides of the end of the push rod, a positioning block and a guide rod are respectively arranged. A second threaded rod rotatably connected to the push rod is arranged between the two guide rods. A handle is arranged at the end of the second threaded rod. A guide sleeve matched with the guide rod and a support block threaded with the second threaded rod are arranged on the side wall of the welding table. Perpendicular to each other relief grooves are arranged on the upper end of the welding table. A first threaded rod is arranged in the relief groove. A top block matched with the first threaded rod is slidably fitted in the relief groove. The top block and the positioning block cooperate to clamp and fix the bottom frame.

[0007] Preferably, the first threaded rod is connected by two threaded rods with opposite thread directions, and a rotating rod is connected to one end of the first threaded rod.

[0008] Preferably, a nut sleeve adapted to the first threaded rod is provided at the lower end of the top block.

[0009] Preferably, an installation groove is provided at the upper end of the welding table, and a scale is provided in the installation groove. The scale is located on one side of the positioning block.

[0010] Preferably, the upper end surface of the scale is not higher than the upper end surface of the welding table.

[0011] Preferably, anti-slip pads are provided on the side walls of the positioning block and the top block.

[0012] Preferably, support legs are provided at the lower end of the welding table.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The position of the positioning mechanism and the top block of the present utility model can be adjusted according to the size of the chassis, which is applicable to the welding positioning of chassis of different sizes, increases the universality of use, solves the problem that special welding jigs need to be manufactured for each size of chassis, saves manufacturing costs and jig storage space, and is simple and fast to use.

[0015] 2. The present utility model performs three-point positioning on the steel pipe through two positioning blocks and one top block, ensuring the stability of the steel pipe after positioning and improving the welding quality.

[0016] 3. The present utility model is provided with a scale at the upper end of the welding table, which is convenient for position positioning during the adjustment of the positioning block, and improves the accuracy of positioning the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 is a front view of the present utility model;

[0019] Figure 3 is a structural schematic diagram of the top block;

[0020] Figure 4 is a structural schematic diagram of the welding table;

[0021] Figure 5 is a top view of the present utility model;

[0022] Figure 6 is a top view of the present utility model during use;

[0023] In the figure: 1 - Welding table; 101 - Guide sleeve; 102 - Support block; 103 - Relief groove; 104 - Installation groove; 2 - Top block; 201 - Nut sleeve; 3 - Positioning mechanism; 301 - Positioning block; 302 - Guide rod; 303 - Push rod; 304 - Second threaded rod; 305 - Handle; 4 - Scale; 5 - First threaded rod; 501 - Rotating rod; 6 - Steel pipe. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] As Figure 1 shown, a welding tool for assembling the bottom frame of a lift includes a welding table 1 and a positioning mechanism 3. Support legs are provided at the lower end of the welding table 1.

[0026] Positioning mechanisms 3 are provided on all four sides of the welding table 1. A top block 2 cooperating with the positioning mechanism 3 is provided on the upper end of the welding table 1. The top block 2 and the positioning mechanism 3 cooperate to position and clamp the steel pipe 6 of the bottom frame.

[0027] As Figure 5 shown, the positioning mechanism 3 includes a push rod 303. A positioning block 301 and a guide rod 302 are respectively provided on both sides of the end of the push rod 303. A second threaded rod 304 rotatably connected to the push rod 303 is provided between the two guide rods 302. A handle 305 is provided at the end of the second threaded rod 304. As Figure 2 shown, a guide sleeve 101 cooperating with the guide rod 302 and a support block 102 threadedly cooperating with the second threaded rod 304 are provided on the side wall of the welding table 1. By rotating the second threaded rod 304 through the handle 305, the push rod 303 can be driven to move forward and backward. A mutually perpendicular relief groove 103 is provided on the upper end of the welding table 1. A first threaded rod 5 is provided in the relief groove 103. A top block 2 cooperating with the first threaded rod 5 is slidably fitted in the relief groove 103. The top block 2 is located between the two positioning blocks 301. The top block 2 and the positioning block 301 cooperate to clamp and fix the steel pipe 6 of the bottom frame.

[0028] In order to improve the adjustment efficiency of the positioning mechanism 3, the first threaded rod 5 is connected by two threaded rods with opposite thread directions. Top blocks 2 are connected to both of the threaded rods with opposite directions. One end of the first threaded rod 5 is connected with a rotating rod 501. The rotating rod 501 penetrates through the first threaded rod 5. The rotating rod 501 is slidably fitted with the first threaded rod 5 to prevent position interference with other components when the rotating rod 501 rotates.

[0029] like Figure 3 As shown, the lower end of the top block 2 is provided with a nut sleeve 201 matched with the first threaded rod 5. The first threaded rod 5 is rotated by the rotating rod 501, and the top block 2 is guided by the clearance groove 103 to achieve horizontal movement.

[0030] In order to improve the accuracy of adjusting the position, Figure 4 As shown, a mounting groove 104 is provided at the upper end of the welding table 1, and a scale 4 is provided in the mounting groove 104. The scale 4 is located on one side of the positioning block 301, and the upper end surface of the scale 4 is not higher than the upper end surface of the welding table 1, so as not to affect the placement of the steel pipe 6.

[0031] Anti-skid pads are provided on the side walls of the positioning block 301 and the top block 2 to prevent damage to the steel pipe 6 during the pressing process.

[0032] like Figure 6 As shown, when in use, the position of the positioning block 301 is adjusted according to the size of the base frame, the steel pipe 6 of the base frame is placed against one side of the positioning block 301, and the four steel pipes 6 are connected to each other to form a rectangular frame. The first threaded rod 5 is rotated, and the steel pipe 6 is pressed against the positioning block 301 through the top block 2 to ensure the stability of the steel pipe 6 during welding.

[0033] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A welding tool for assembling a lift chassis, characterized by: It includes a welding table and a positioning mechanism. The positioning mechanism is arranged around the welding table. The positioning mechanism includes a push rod. Positioning blocks and guide rods are respectively arranged on both sides of the end of the push rod. A second threaded rod rotatably connected to the push rod is arranged between the two guide rods. A handle is arranged at the end of the second threaded rod. A guide sleeve matched with the guide rod and a support block threadedly matched with the second threaded rod are arranged on the side wall of the welding table. Mutually perpendicular grooves are arranged on the upper end of the welding table. A first threaded rod is arranged in the groove. A top block matched with the first threaded rod is slidably matched in the groove. The top block matches with the positioning block to clamp and fix the base frame.

2. The assembly welding tool for the elevator chassis according to claim 1, characterized in that: The first threaded rod is formed by connecting two threaded rods with opposite thread directions, and one end of the first threaded rod is connected to a rotating rod.

3. The assembly welding tool for the elevator chassis according to claim 1, characterized in that: The lower end of the top block is provided with a nut sleeve matched with the first threaded rod.

4. The assembly welding tool for the elevator chassis according to claim 1, characterized in that: A mounting groove is arranged at the upper end of the welding platform, a scale is arranged in the mounting groove, and the scale is located at one side of the positioning block.

5. The assembly welding tool for the elevator chassis according to claim 4, characterized in that: The upper end surface of the scale is not higher than the upper end surface of the welding platform.

6. The assembly welding tool for the elevator chassis according to claim 1, characterized in that: Anti-slip pads are arranged on the side walls of the positioning block and the top block.

7. The assembly welding tool for the elevator chassis according to claim 1, characterized in that: The lower end of the welding platform is provided with supporting legs.

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