Forklift frame welding tool

Abstract

The invention relates to the field of welding, in particular to a forklift frame welding tool which comprises a main frame, a transverse rod frame transversely penetrates through and is fixed to the main frame, two side plates are symmetrically arranged on the transverse rod frame, baffles are fixed to the front ends of the lower ends of the two side plates, the two baffles vertically rotate outwards to be provided with bearing shafts I, and the rear ends of the lower ends of the two side plates are connected with extending side plates. And a vertical rod frame is arranged at the front end of the upper end of the main frame, a lifting seat is arranged on the vertical rod frame in a lifting sliding mode, and pressing shafts are arranged at the left end and the right end of the lifting seat in a forward extending and rotating mode. And a vertical screw rod is rotationally arranged on the vertical rod frame and is in threaded connection with the lifting seat in a penetrating manner. The triangular front blocking frame can be conveniently centered and limited.

Description

Technical Field

[0001] This invention relates to the field of welding, and in particular to a welding fixture for forklift frames. Background Technology

[0002] Manual forklifts, also known as "ground jacks," are essential equipment in factories for material handling, as shown in the attached document. Figure 1 The forklift frame shown is welded by first fixing the two load-bearing arms to both ends of the crossbeam, and then welding the front guard to the crossbeam and the two load-bearing arms. However, because the front guard is triangular, it is not easy to center and limit it on the crossbeam during welding, which can easily lead to misalignment and affect the use of the forklift frame. Summary of the Invention

[0003] The purpose of this invention is to provide a forklift frame welding fixture that facilitates the centering and limiting of a triangular front stop.

[0004] The objective of this invention is achieved through the following technical solution: A forklift frame welding fixture includes a main frame with a horizontally fixed crossbar frame running through it. Two side plates are symmetrically arranged on the crossbar frame. A baffle is fixed to the front end of the lower end of each side plate. A load-bearing shaft I is vertically rotatable outward from each of the two baffles. An extension side plate is connected to the rear end of the lower end of each side plate. A load-bearing shaft II is vertically rotatable outward from the rear end of each of the two extension side plates. A vertical bar frame is provided at the front end of the upper end of the main frame. A lifting seat is slidably raised and lowered on the vertical bar frame. Pressure shafts extend forward and rotate at both ends of the lifting seat.

[0005] A vertical screw is rotatably mounted on the vertical frame, and the vertical screw is threadedly connected to the lifting seat.

[0006] The crossbar frame has a bidirectional screw that rotates laterally in the middle, and the two side plates are threaded to the two ends of the bidirectional screw respectively.

[0007] The lower end of the main frame has a horizontal axis that rotates laterally, and the two extended side plates are slidably connected to the two ends of the horizontal axis.

[0008] A worm gear I is fixed in the middle of the horizontal shaft, and a worm I rotates on the main frame. The worm I is meshed with the worm gear I for transmission.

[0009] A sliding rod frame is slidably connected through the middle of the main frame in the front-to-back direction. A front top plate is fixed to the front end of the sliding rod frame, and a horizontal screw is rotatably connected to the rear end of the sliding rod frame. The horizontal screw is threadedly connected to the main frame.

[0010] The front side of the top plate is provided with a rubber layer.

[0011] A support shaft is rotatably rotatably passed through the lower end of the main frame. The support shaft is fixed to the upper end of the base frame. A worm gear II is fixed in the middle of the support shaft. A worm II rotates on the main frame. The worm II and the worm gear II are meshed and connected for transmission.

[0012] The outer surfaces of the bearing shaft I and bearing shaft II are covered with a rubber layer.

[0013] The outer surface of the pressure shaft is covered with a rubber layer.

[0014] The beneficial effects of this invention are as follows: 1. The two load-bearing arms are supported by the load-bearing shafts I and II on both sides, and the crossbeam is blocked by two baffles. The crossbeam and the two load-bearing arms are supported by the load-bearing shafts. Then, the two pressure shafts are symmetrically pressed on the two inclined surfaces of the front baffle, so that the front baffle is centered and limited on the crossbeam. 2. By symmetrically adjusting the width between the two side plates, the welding fixture can be adapted to the welding limit of forklift frames of different sizes. Attached Figure Description

[0015] Figure 1 This is a structural diagram of a forklift frame; Figure 2 and Figure 3 This is a structural schematic diagram of the welding fixture for the forklift frame; Figure 4 This is a structural diagram of the base frame; Figure 5 This is a structural diagram of the base frame, main frame, worm gear II, and crossbar frame; Figure 6 This is a partial structural diagram of the welding fixture for the forklift frame; Figure 7 yes Figure 6 A partial structural diagram; Figure 8 and Figure 9 This is a structural diagram of the main frame, lifting seat, pressure shaft, front top plate, and slide bar frame.

[0016] In the picture: Base frame 101; Support shaft 102; Worm gear II 103; Main frame 201; worm gear II 202; horizontal bar frame 203; vertical bar frame 204; double-acting screw 205; Side plate 301; Bearing shaft I 302; Baffle 303; Extended side plate 304; Bearing shaft II 305; Horizontal shaft 306; Worm gear I 307; Worm I 308; Lifting seat 401; Pressure shaft 402; Vertical screw 403; Front top plate 501; sliding frame 502; horizontal screw 503. Detailed Implementation

[0017] like Figure 2-9 Example 1 of the method for preparing photocatalytic formaldehyde removal coating: A forklift frame welding fixture includes a main frame 201. A crossbar frame 203 is horizontally fixed through the main frame 201. Two side plates 301 are symmetrically arranged on the crossbar frame 203. A baffle 303 is fixed to the front end of the lower end of each side plate 301. A bearing shaft I 302 is vertically rotatable to the outer side of each baffle 303. An extension side plate 304 is connected to the rear end of the lower end of each side plate 301. A bearing shaft II 305 is vertically rotatable to the rear end of each extension side plate 304. A vertical bar frame 204 is provided at the front end of the upper end of the main frame 201. A lifting seat 401 is slidably raised and lowered on the vertical bar frame 204. A pressure shaft 402 extends forward and rotates to both ends of the lifting seat 401.

[0018] During welding, the two load-bearing arms are placed on the left and right sides of the main frame 201 and on the two sets of bearing shafts I 302 and II 305. At this time, the two load-bearing arms are respectively attached to the two side plates 301. Then, the crossbeam is pushed backward so that it presses against the two baffles 303. At this time, the crossbeam and the two load-bearing arms can only move forward in the horizontal direction, forming a certain limit. Then, the front frame is placed on the crossbeam, and the lifting seat 401 is controlled to drive the two pressure shafts 402 to descend, so that the two pressure shafts 402 press against the inclined surfaces on the left and right sides of the front frame at the same time. Since the two pressure shafts 402 are symmetrical about the center, when the two pressure shafts 402 press against the inclined surfaces on the left and right sides of the front frame at the same time, it means that the front frame is in a centered state. The pressure shafts 402 press the front frame downward, thereby forming a limit and fixation between the front frame, the crossbeam, and the two load-bearing arms. Then, the front frame is welded and fixed. The whole limiting process is convenient and quick, which greatly improves the welding efficiency and ensures the quality of the forklift frame. It should be noted that the bearing shaft I 302 and the bearing shaft II 305 are rotatably connected to facilitate pushing and pulling the load-bearing arm in the front and rear directions. The two pressure shafts 402 are rotatably connected to facilitate rolling the two pressure shafts 402 on the inclined plane to center the front guard.

[0019] Further: A vertical screw 403 rotates on the vertical rod frame 204, and the vertical screw 403 is threadedly connected to the lifting seat 401.

[0020] By rotating the vertical screw 403, the threaded transmission lifting seat 401 can be raised and lowered, which in turn drives the two pressure shafts 402 to rise and fall, thereby achieving the centering and pressing of the two pressure shafts 402 against the front baffle.

[0021] Further: The crossbar frame 203 has a bidirectional screw 205 that rotates laterally in the middle, and the two side plates 301 are threadedly connected to the two ends of the bidirectional screw 205 respectively.

[0022] By rotating the bidirectional screw 205, the two side plates 301 can be simultaneously threaded to move closer or further apart on the crossbar frame 203, thereby adjusting the width of the two side plates 301 to accommodate different specifications of forklift frames formed by different widths between the two load-bearing arms.

[0023] Further: The lower end of the main frame 201 has a horizontal shaft 306 that rotates laterally, and two extended side plates 304 are slidably connected to the two ends of the horizontal shaft 306 respectively.

[0024] It should be noted that in order to ensure the load-bearing capacity of the load-bearing arm, the edge of the load-bearing arm will be turned down. However, the lower end of the turned edge of some load-bearing arms is not at the same height. Therefore, when the load-bearing shaft I 302 and the load-bearing shaft II 305 support the turned edge, the height of the load-bearing shaft II 305 needs to be adjusted to ensure that the upper end face of the load-bearing arm is in a horizontal state. Therefore, the extension side plate 304 and the side plate 301 are connected by a bushing fixed on the extension side plate 304 that rotates through the side plate 301. Thus, by rotating the extension side plate 304 on the side plate 301 through the bushing, the horizontal height of the bearing shaft II 305 can be adjusted. Furthermore, by setting the horizontal shaft 306, the horizontal shaft 306 can synchronously drive the two bushings to rotate through the key, thereby achieving synchronous adjustment of the horizontal height of the two bearing shafts II 305.

[0025] Further: A worm gear I 307 is fixed in the middle of the horizontal shaft 306, and a worm I 308 rotates on the main frame 201. The worm I 308 is meshed with the worm gear I 307 for transmission.

[0026] The self-locking function between worm gear I 308 and worm wheel I 307 locks the rotation of the horizontal shaft 306, thereby locking the horizontal height position of the two bearing shafts II 305.

[0027] Further: A sliding rod frame 502 is slidably connected through the middle of the main frame 201 in the front-to-back direction. A front top plate 501 is fixed to the front end of the sliding rod frame 502. A horizontal screw 503 is rotatably connected to the rear end of the sliding rod frame 502. The horizontal screw 503 is threadedly connected to the main frame 201.

[0028] Rotating the horizontal screw 503 causes axial movement of the horizontal screw 503 through the thread between the horizontal screw 503 and the main frame 201, which in turn drives the slide frame 502 to move back and forth. This allows for adjustment of the position of the front top plate 501, which in turn presses against the front baffle, limiting the back and forth position between the front baffle and the crossbeam, thus ensuring the quality of the forklift frame.

[0029] Further: By providing a rubber layer on the front side of the front top plate 501, damage to the surface of the front top plate 501 is avoided.

[0030] Further: The main frame 201 has a support shaft 102 that rotates horizontally through its lower end. The support shaft 102 is fixed to the upper end of the base frame 101. A worm gear II 103 is fixed in the middle of the support shaft 103. A worm II 202 rotates on the main frame 201. The worm II 202 is meshed with the worm gear II 103 for transmission.

[0031] By rotating the worm gear II 202, it can mesh with the worm wheel II 103 for transmission, causing the worm gear II 202 to drive the main frame 201 to rotate on the support shaft 102. This allows the state of the main frame 201 to be adjusted, so that the upper end of the main frame 201 can be tilted slightly backward, thus forming a downward tilt of the two load-bearing arms. This makes the load-bearing arms more stable when initially supported by the load-bearing shaft I 302 and the load-bearing shaft II 305. Moreover, since the main frame 201 is tilted backward as a whole, it does not affect the pressing of the two pressure shafts 402 on the left and right tilting surfaces of the front baffle, nor does it affect the limiting of the front baffle by the front top plate 501.

[0032] Further: The outer surfaces of the bearing shaft I 302 and bearing shaft II 305 are covered with a rubber layer.

[0033] The outer surface of the pressure shaft 402 is covered with a rubber layer.

[0034] The rubber layers on the outer surfaces of bearing shaft I 302, bearing shaft II 305, and pressure shaft 402 can all protect the forklift frame. At the same time, the rubber layer on pressure shaft 402 can also increase the friction between it and the front guard, preventing the front guard from moving back and forth.

Claims

1. A forklift frame welding fixture, characterized in that: The main frame (201) is provided with a horizontally fixed crossbar (203) on the main frame (201). Two side plates (301) are symmetrically provided on the crossbar (203). A baffle (303) is fixed at the front end of the lower end of each side plate (301). A bearing shaft I (302) is vertically rotated outward on each of the two baffles (303). An extension side plate (304) is connected to the rear end of the lower end of each side plate (301). A bearing shaft II (305) is vertically rotated outward on the rear end of each of the two extension side plates (304). A vertical bar (204) is provided at the front end of the upper end of the main frame (201). A lifting seat (401) is slidably raised and lowered on the vertical bar (204). A pressure shaft (402) extends forward and rotates at both ends of the lifting seat (401).

2. The forklift frame welding fixture according to claim 1, characterized in that: A vertical screw (403) rotates on the vertical rod frame (204), and the vertical screw (403) is threadedly connected to the lifting seat (401).

3. The forklift frame welding fixture according to claim 1, characterized in that: The crossbar frame (203) has a bidirectional screw (205) that rotates laterally in the middle, and the two side plates (301) are threaded to the two ends of the bidirectional screw (205) respectively.

4. The forklift frame welding fixture according to claim 1, characterized in that: The lower end of the main frame (201) has a horizontal shaft (306) that rotates laterally, and two extended side plates (304) are slidably connected to the two ends of the horizontal shaft (306).

5. The forklift frame welding fixture according to claim 4, characterized in that: A worm gear I (307) is fixed in the middle of the horizontal shaft (306), and a worm I (308) rotates on the main frame (201). The worm I (308) and the worm gear I (307) are meshed and connected for transmission.

6. The forklift frame welding fixture according to claim 1, characterized in that: The main frame (201) has a sliding rod frame (502) that slides through the middle in the front-to-back direction. The front top plate (501) is fixed to the front end of the sliding rod frame (502). The rear end of the sliding rod frame (502) has a rotating horizontal screw (503) that is threadedly connected to the main frame (201).

7. A forklift frame welding fixture according to claim 6, characterized in that: The front side of the front top plate (501) is provided with a rubber layer.

8. The forklift frame welding fixture according to claim 1, characterized in that: The main frame (201) has a support shaft (102) that rotates horizontally through its lower end. The support shaft (102) is fixed to the upper end of the base frame (101). A worm gear II (103) is fixed in the middle of the support shaft (102). A worm II (202) rotates on the main frame (201). The worm II (202) and the worm gear II (103) are meshed and connected for transmission.

9. A forklift frame welding fixture according to claim 1, characterized in that: The outer surfaces of the bearing shaft I (302) and bearing shaft II (305) are covered with a rubber layer.

10. A forklift frame welding fixture according to claim 1, characterized in that: The outer surface of the pressure shaft (402) is covered with a rubber layer.

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