Assembling and welding tool for fork arm carrier shaft head

Abstract

The utility model discloses an assembling and welding tool for a fork arm carrier shaft head, and particularly relates to the technical field of forklifts, the assembling and welding tool comprises an end positioning piece, a jacking device, a roller way conveying device, a shaft head positioning assembly and a lifting frame, the top of a base is fixedly connected with the bottom of the roller way conveying device, and sliding frames are fixedly installed on the two sides of the roller way conveying device; the two sides of the lifting frame are slidably connected with the two sides of the conveying device through the corresponding sliding frames correspondingly. The end positioning pieces and the jacking devices are fixedly installed in the middles of the two sides of the roller way conveying device correspondingly, and the tops of the two lifting frames are slidably connected with the two shaft head positioning assemblies through sliding rails correspondingly. By arranging the jacking device, the end positioning piece and the roller way conveying device, the assembling and welding platform does not need to be switched by utilizing the roller way conveying device, and the transfer efficiency is improved; by means of cooperation of the jacking devices and the end positioning pieces, various fork arm carrier frames can be clamped, labor is saved, and the fork arm carrier clamping device is compatible with various products.

Description

Technical Field

[0001] This utility model relates to the field of forklift technology, and more specifically, to a welding fixture for assembling the fork carriage shaft head. Background Technology

[0002] The purpose of welding the axle head on the forklift fork carriage is to install the fork carriage rollers so that the fork carriage rollers can roll in the channel steel of the forklift mast, thereby facilitating the lifting, swaying and load-bearing of the fork carriage; therefore, the accuracy of the axle head positioning dimension is crucial; the current fork carriage welding sequence is: first weld the parts except the axle head to form the fork carriage frame, and then weld the axle head after calibration.

[0003] However, in actual use, the existing shaft head welding has some problems:

[0004] 1. There are many types of forklift carriages, resulting in different positioning dimensions of the forklift carriage shaft head. The existing forklift carriage assembly welding mold can only correspond to one product and cannot be compatible with multiple products, thus causing the problem of cumbersome mold changing.

[0005] 2. The existing fork carriage assembly welding mold is demolded manually. If there is slight deformation during welding, demolding is relatively difficult, time-consuming and labor-intensive.

[0006] Therefore, this utility model proposes a welding fixture for the fork carriage shaft head as a further improvement. Utility Model Content

[0007] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide a welding fixture for the assembly of fork carriage shaft heads to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a welding fixture for a fork carriage axle head, comprising a base, the fixture further comprising: an end positioning member for restricting the movement of the fork carriage frame; a clamping device for fixing the fork carriage frame in conjunction with the end positioning member; a roller conveyor for moving the fork carriage frame; an axle head positioning assembly for placing the axle head; and a lifting frame for pushing the axle head positioning assembly to move.

[0009] The roller conveyor is fixedly installed on the base, and both sides of the roller conveyor are slidably connected to the two sides of the lifting frame through a slide.

[0010] The end positioning component and the clamping device are respectively fixedly installed in the middle of both sides of the roller conveyor device, and the end positioning component and the clamping device are both located between the two lifting frames. The tops of the two lifting frames are slidably connected to the two shaft head positioning assemblies respectively through slide rails.

[0011] Furthermore, a side thrust cylinder mounting bracket is fixedly installed on the top of each of the two lifting frames, and a side thrust cylinder is installed on the side thrust cylinder mounting bracket. The output end of the side thrust cylinder is fixedly connected to the shaft head positioning assembly.

[0012] Furthermore, a lifting cylinder is fixedly installed on the base, and the output shaft of the lifting cylinder is fixedly connected to the bottom of the lifting frame.

[0013] Furthermore, the clamping device includes: a fixing frame, a clamping frame, and a clamping cylinder;

[0014] The fixed frame is fixedly installed on the side of the roller conveyor device away from the end positioning member. The bottom of the clamping frame is slidably connected to the top of the fixed frame. The clamping cylinder is fixedly installed on the bottom of the fixed frame, and the output shaft of the clamping cylinder is fixedly connected to the clamping frame.

[0015] Furthermore, the clamping device is fixedly installed on the side away from the roller conveyor device with a first manual valve for driving the lifting cylinder, a second manual valve for driving the clamping cylinder, and a third manual valve for driving the side-push cylinder.

[0016] Furthermore, a fixed seat is fixedly installed at one end of the base near the roller conveyor device, and the fixed seat is rotatably connected to an anti-collision device via a rotating shaft;

[0017] The anti-collision device is L-shaped and is divided into a lifting section and a blocking section. One end of the lifting section is fixedly connected to one end of the blocking section.

[0018] The bottom surface of the lifting section is in contact with the upper surface of the bottom of the hoisting frame, and the weight of the blocking section is less than the weight of the lifting section.

[0019] Furthermore, a plurality of evenly distributed positioning plates for positioning the shaft head are fixedly installed on the inner wall of the top of the lifting frame.

[0020] The technical effects and advantages of this utility model are as follows:

[0021] 1. Compared with existing technologies, by setting up a clamping device, end positioning components, and roller conveyor, not only can the roller conveyor be used without switching welding platforms, improving transfer efficiency, but also the clamping device and end positioning components can clamp various forklift frames, saving labor and being compatible with various products. By setting up a lifting frame and axle head positioning assembly, the positioning effect of the positioning plate, combined with the side push cylinder and lifting cylinder, can accurately position the axle head on the axle head positioning assembly to the designated welding position, thereby improving welding efficiency and accuracy. By setting up an anti-collision device linked with the lifting frame, it is ensured that only one forklift frame is welded on the roller conveyor, avoiding mechanical failure. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the end positioning component of this utility model.

[0024] Figure 3 This is a schematic diagram of the clamping device of this utility model.

[0025] Figure 4 This is a schematic diagram of the structure of the roller conveyor device of this utility model.

[0026] Figure 5 This is a schematic diagram of the shaft head positioning assembly of this utility model.

[0027] Figure 6 This is an exploded view of the shaft head positioning assembly of this utility model.

[0028] Figure 7 This is a schematic diagram of the lifting frame of this utility model.

[0029] Figure 8 This is a schematic diagram of the structure of the slide of this utility model.

[0030] Figure 9 This is a schematic diagram of the anti-collision device of this utility model.

[0031] Figure 10 This is a schematic diagram showing the location of the anti-collision device and positioning plate of this utility model.

[0032] Figure 11 This is a schematic diagram showing the position of the positioning plate of this utility model on the lifting frame.

[0033] Figure 12 This is a structural schematic diagram of the base of this utility model.

[0034] The attached figures are labeled as follows:

[0035] 1. Base;

[0036] 2. End positioning component; 21. Fixing plate; 22. L-shaped limiting block;

[0037] 3. Tightening device; 31. Fixing frame; 32. Clamping frame; 33. Tightening cylinder;

[0038] 4. Roller conveyor device; 41. Rotating roller;

[0039] 5. Shaft head positioning assembly; 51. Shaft head positioning bracket; 52. Sleeve;

[0040] 6. Lifting frame; 7. Carriage; 8. Side push cylinder mounting bracket; 9. Side push cylinder; 10. Lifting cylinder; 11. First manual valve; 12. Second manual valve; 13. Third manual valve; 14. Fixed base;

[0041] 15. Anti-collision device; 151. Lifting section; 152. Blocking section;

[0042] 16. Positioning plate; 17. Foot support. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0044] As attached Figure 1-12 The welding fixture shown includes a base 1, and further includes: an end positioning component 2 for restricting the movement of the fork carriage frame; a clamping device 3 for fixing the fork carriage frame in conjunction with the end positioning component 2; a roller conveyor device 4 for moving the fork carriage frame; an axle head positioning assembly 5 for placing the axle head; and a lifting frame 6 for pushing the axle head positioning assembly 5 to move.

[0045] As attached Figure 1 As shown, the top of the base 1 is fixedly connected to the bottom of the roller conveyor device 4, and the bottom of the base 1 is also equipped with a foot support 17.

[0046] The end positioning component 2 and the clamping device 3 are respectively fixedly installed in the middle of both sides of the roller conveyor device 4, and the end positioning component 2 and the clamping device 3 are both located between the two lifting frames 6.

[0047] As attached Figure 2 As shown, the end positioning component 2 includes: a fixing plate 21 and two L-shaped limiting blocks 22. The fixing plate 21 is fixed in the middle of one side of the roller conveyor device 4, and the two L-shaped limiting blocks 22 are fixedly installed on the fixing plate 21. The two L-shaped limiting blocks 22 contact the fork frame and use their own shape to lock and limit the fork frame.

[0048] As attached Figure 3 As shown, the clamping device 3 includes: a fixing frame 31, a clamping frame 32, and a clamping cylinder 33;

[0049] The fixed frame 31 is fixedly installed on the side of the roller conveyor 4 away from the end positioning member 2. The bottom of the clamping frame 32 is slidably connected to the top of the fixed frame 31. The clamping cylinder 33 is fixedly installed on the bottom of the fixed frame 31, and the output shaft of the clamping cylinder 33 is fixedly connected to the clamping frame 32. When the clamping cylinder 33 drives the clamping frame 32 to move toward the end positioning member 2, it will clamp the fork carriage frame. Therefore, this structure can be compatible with various fork carriage frames.

[0050] As attached Figure 1 , 4 As shown in Figure 8, both sides of the roller conveyor device 4 are fixedly installed with slides 7, and both sides of the lifting frame 6 are slidably connected to both sides of the conveyor device 4 through corresponding slides 7.

[0051] As attached Figure 5 and 6 As shown, the shaft head positioning assembly 5 includes: a shaft head positioning bracket 51 and a sleeve 52;

[0052] The axle head positioning bracket 51 is fixedly installed with multiple sleeves 52 by screws, nuts and positioning pins. The sleeves 52 can fit the axle head. When the end face of the axle head is close to the side of the column plate of the fork carriage frame, the axle head can be welded together. Therefore, this structure is not only quick and accurate in positioning, which is convenient for manual welding, but also convenient for assembly welding, labor-saving and easy to demold, thereby improving the assembly welding efficiency.

[0053] As attached Figure 1 and attached Figure 7 As shown, the tops of the two lifting frames 6 are slidably connected to the two shaft head positioning assemblies 5 via slide rails.

[0054] In a preferred embodiment, as shown in the appendix Figure 1 Appendix Figure 7 Appendix Figure 10 and attached Figure 11 As shown, a side-push cylinder mounting bracket 8 is fixedly installed on the top of each of the two lifting frames 6. A side-push cylinder 9 is installed on the side-push cylinder mounting bracket 8. The output end of the side-push cylinder 9 is fixedly connected to the shaft head positioning assembly 5 so that the shaft head positioning assembly 5 can be driven to move toward the fork carriage frame by using the side-push cylinder 9.

[0055] In a preferred embodiment, as shown in the appendix Figure 1 and attached Figure 10 As shown, a lifting cylinder 10 is fixedly installed on the base 1, and the output shaft of the lifting cylinder 10 is fixedly connected to the bottom of the lifting frame 6; so that the lifting cylinder 10 can be used to drive the lifting frame 6 to rise and fall on the slide 7.

[0056] In a preferred embodiment, as shown in the appendix Figure 1 Appendix Figure 3 and attached Figure 10As shown, the clamping device 3 is fixedly installed on the side away from the roller conveyor device 4 with a first manual valve 11 for driving the lifting cylinder 10, a second manual valve 12 for driving the clamping cylinder 33, and a third manual valve 13 for driving the side push cylinder 9.

[0057] In a preferred embodiment, as shown in the appendix Figure 1 Appendix Figure 9 and attached Figure 10 As shown, a fixed seat 14 is fixedly installed at one end of the base 1 near the roller conveyor device 4, and the fixed seat 14 is rotatably connected to an anti-collision device 15 via a rotating shaft;

[0058] The anti-collision device 15 is L-shaped and is divided into a lifting section 151 and a blocking section 152. One end of the lifting section 151 is fixedly connected to one end of the blocking section 152.

[0059] The bottom surface of the lifting section 151 contacts the upper surface of the bottom of the lifting frame 6, and the weight of the blocking section 152 is less than the weight of the lifting section 151.

[0060] The pivot, which serves as the lever fulcrum, is located at the connection between the lifting section 151 and the blocking section 152.

[0061] In a preferred embodiment, as shown in the appendix Figure 10 and attached Figure 11 As shown, multiple evenly distributed positioning plates 16 for positioning the shaft head are fixedly installed on the inner wall of the top of the lifting frame 6.

[0062] When the positioning plate 16 fixed to the lifting frame 6 descends, if it contacts the machined surface of the fork carriage frame channel steel, the descent of the lifting frame 6 will stop. At this time, the shaft head positioning assembly 5 has been positioned at the specified height.

[0063] As attached Figure 1-12 As shown, an assembly method for a welding fixture includes a welding fixture for a fork carriage shaft head.

[0064] The assembly method includes the following specific steps:

[0065] S1: First, the lifting cylinder 10 is controlled by the first manual valve 11 to lift the lifting frame 6. Since the middle part of the anti-collision device 15 is rotatably connected to the fixed seat 14 on the base 1, the bottom surface of the lifting section 151 contacts the upper surface of the bottom of the lifting frame 6, so that the lifting frame 6 is lifted and the lifting section 151 is raised, while the blocking section 152 will descend. At this time, the height of the blocking section 152 is lower than the height of the rotating roller 41 in the roller conveyor device 4, that is, the blocking section 152 no longer obstructs the fork frame. Then, the fork frame is manually pushed into the roller conveyor device 4.

[0066] S2: The clamping cylinder 33 is controlled by the second manual valve 12 to move the clamping frame 32 toward the end positioning part 2, thereby clamping the fork frame in S1.

[0067] S3: The lifting cylinder 10 is controlled by the first manual valve 11 to drive the lifting frame 6 to descend. The weight of the blocking section 152 is less than the weight of the lifting section 151. The lifting section 151, located on the upper surface of the bottom of the lifting frame 6, descends together with the upper surface of the bottom of the lifting frame 6 under the action of gravity. Then the blocking section 152 will prevent the next workpiece from entering the roller conveyor device 4. That is, the anti-collision device 15 prevents the fork frame from entering and exiting the roller conveyor device 4. When the positioning plate 16 contacts the machined surface of the channel steel of the fork frame, the descent stops. At this time, the shaft head positioning assembly 5 has been positioned at the specified height. Then, the shaft head is manually placed on the sleeve 52 in the shaft head positioning assembly 5.

[0068] S4: Control the side push cylinder 9 through the third manual valve 13 to move the shaft head positioning assembly 5 to the center of the fork carriage frame. Stop pushing when the end face of the shaft head is close to the side of the fork carriage column plate.

[0069] S5: The contact point between the end face of the shaft head and the side of the fork carriage upright plate is manually spot welded.

[0070] S6: Control the side push cylinder 9 through the third manual valve 13 to move the shaft head positioning assembly 5 to both sides of the fork frame. After the sleeve 52 in the shaft head positioning assembly 5 separates from the shaft head, proceed to S7.

[0071] S7: The lifting cylinder 10 is controlled by the first manual valve 11 to lift the lifting frame 6. At this time, the shaft head positioning assembly 5 rises with the lifting frame 6 and moves away from the fork carriage frame. That is, the shaft head positioning assembly 5 is moved to a position that facilitates the entry and exit of the fork carriage frame. At this time, the lifting frame 6 rises and drives the lifting section 151 to rise, so that the blocking section 152 will fall. That is, the anti-collision device 15 does not block the fork carriage frame from entering and exiting the roller conveyor device 4.

[0072] S8: Control the clamping cylinder 33 through the second manual valve 12 to move the clamping frame 32 away from the end positioning part 2, and release the fork carriage frame; demolding is now complete; finally, manually push the welded fork carriage frame to the next process to complete the welding.

[0073] Among them, in S1, S2, S7 and S8, the anti-collision device 15 does not block the fork frame from entering and exiting the roller conveyor device 4.

[0074] In S3-S6, anti-collision device 15 blocks the fork frame from entering and exiting the roller conveyor device 4.

[0075] 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, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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.

[0076] 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 welding fixture for assembling a fork carriage shaft head, comprising a base (1), characterized in that: Also includes: The fork carriage frame includes an end locating member (2) for restricting movement, a clamping device (3) for securing the fork carriage frame in conjunction with the end locating member (2), a roller conveyor (4) for moving the fork carriage frame, a shaft head positioning assembly (5) for placing the shaft head, and a lifting frame (6) for pushing the shaft head positioning assembly (5) to move. The roller conveyor (4) is fixedly installed on the base (1), and both sides of the roller conveyor (4) are slidably connected to both sides of the lifting frame (6) through the slide (7); The end positioning component (2) and the clamping device (3) are respectively fixedly installed in the middle of both sides of the roller conveyor (4), and the end positioning component (2) and the clamping device (3) are both located between the two lifting frames (6). The tops of the two lifting frames (6) are slidably connected to the two shaft head positioning assemblies (5) respectively through slide rails.

2. The welding fixture for the fork carriage shaft head according to claim 1, characterized in that: Both of the lifting frames (6) are fixedly mounted with side thrust cylinder mounting brackets (8), and side thrust cylinders (9) are mounted on the side thrust cylinder mounting brackets (8). The output end of the side thrust cylinders (9) is fixedly connected to the shaft head positioning assembly (5).

3. The welding fixture for the fork carriage shaft head according to claim 1, characterized in that: A lifting cylinder (10) is fixedly installed on the base (1), and the output shaft of the lifting cylinder (10) is fixedly connected to the bottom of the lifting frame (6).

4. The welding fixture for the fork carriage shaft head according to claim 1, characterized in that: The clamping device (3) includes: a fixing frame (31), a clamping frame (32), and a clamping cylinder (33); The fixed frame (31) is fixedly installed on the side of the roller conveyor (4) away from the end positioning member (2). The bottom of the clamping frame (32) is slidably connected to the top of the fixed frame (31). The clamping cylinder (33) is fixedly installed on the bottom of the fixed frame (31), and the output shaft of the clamping cylinder (33) is fixedly connected to the clamping frame (32).

5. A welding fixture for assembling a fork carriage shaft head according to claim 2, 3, or 4, characterized in that: The clamping device (3) is fixedly installed on the side away from the roller conveyor device (4) with a first manual valve (11) for driving the lifting cylinder (10), a second manual valve (12) for driving the clamping cylinder (33) and a third manual valve (13) for driving the side push cylinder (9).

6. The welding fixture for the fork carriage shaft head according to claim 1, characterized in that: A fixed seat (14) is fixedly installed at one end of the base (1) near the roller conveyor (4), and the fixed seat (14) is rotatably connected to an anti-collision device (15) via a rotating shaft; The anti-collision device (15) is L-shaped and is divided into a lifting section (151) and a blocking section (152). One end of the lifting section (151) is fixedly connected to one end of the blocking section (152). The bottom surface of the lifting section (151) is in contact with the upper surface of the bottom of the lifting frame (6), and the weight of the blocking section (152) is less than the weight of the lifting section (151).

7. The welding fixture for the fork carriage shaft head according to claim 1, characterized in that: The inner wall of the top of the lifting frame (6) is fixedly equipped with a plurality of evenly distributed positioning plates (16) for positioning the shaft head position.

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