A welding fixture for engineering vehicle suspension

Abstract

This invention discloses a welding fixture for engineering vehicle suspensions, belonging to the field of vehicle manufacturing technology. It solves the problems of low welding precision, poor stability, and inflexible clamping in existing technologies. The fixture includes a base with a support column on one side of its surface. A control host is located on the top of the support column, and two sets of positioning devices are located on the outside of the support column. Each positioning device includes a mounting box, an adjusting component inserted into the mounting box, and a gripping component connected to the adjusting component. This invention uses a knob to initially adjust the adjusting component to a suitable position for clamping the suspension. Then, the drive wheel transmits power to the swing wheel to finely adjust the position of the moving plate. This avoids instability in the lower support of the fixture when the suspension is subjected to excessive impact during welding, which could lead to a decrease in the welding precision of the suspension. The gripping component has a W-shaped movable arm to improve gripping stability. Furthermore, the multi-segment corrugated design allows it to adapt to suspension workpieces of different specifications, improving its applicability and flexibility.

Description

Technical Field

[0001] This invention belongs to the field of vehicle manufacturing technology, and more specifically, relates to a welding fixture for the suspension of an engineering vehicle. Background Technology

[0002] Engineering vehicles generally consist of four basic parts: engine, chassis, body, and electrical equipment. These four parts are connected by various connecting systems. The suspension is one of these connecting systems, used to connect the body, frame, and wheels. Its main tasks are to transmit all the resultant torques acting between the wheels and frame, mitigate the impact loads transmitted from the road surface to the frame, dampen the resulting vibrations in the load-bearing system, and ensure the vehicle's ride comfort; it also ensures that the wheels have ideal motion characteristics when encountering uneven road surfaces and load changes, guaranteeing the vehicle's handling stability. During the production of engineering vehicle suspensions, components of different shapes and sizes need to be clamped, fixed, and then welded together, thus requiring engineering vehicle suspension welding fixtures. Currently, engineering vehicle welding fixtures require changing clamping components to accommodate components of different shapes and sizes, which not only places high demands on the clamping components but also severely impacts work efficiency. In addition, after the lower part of some welding fixtures is fixed, there is still a certain gap between it and the suspension of the engineering vehicle. When the clamping part is subjected to welding impact, the clamping part causes the lower part to deflect, which in turn causes the welding position of the clamping part to change when it performs the next welding, resulting in a decrease in welding accuracy. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a welding fixture for engineering vehicle suspensions that offers high welding precision, strong stability, and flexible clamping.

[0004] To achieve the above technical objectives, the technical solution adopted by the engineering vehicle suspension welding fixture of the present invention is as follows:

[0005] A welding fixture for a suspension of an engineering vehicle includes a base, a support column on one side of the base surface, a control host on the top of the support column, and two sets of positioning devices on the outer side of the support column. The positioning devices include a mounting box, an adjustment component inserted into the mounting box, and a gripping component connected to the adjustment component.

[0006] The adjustable distance assembly includes a positioning plate inserted into the mounting box. A positioning shaft is provided on the lower side of the positioning plate. The positioning shaft runs through the front and rear inner walls of the mounting box and passes through the rear wall, controlled by a knob. A movable plate extending out of the mounting box is slidably connected to the surface of the positioning shaft. A connecting bolt is provided on the surface of the movable plate. The other end of the connecting bolt is fixedly connected to the top of the balance wheel. A linkage shaft is provided on the surface of the balance wheel. The linkage shaft is inserted into the center of the rotating disk. A drive column is provided on the outer surface of the rotating disk. The drive column is inserted into the drive block and slidably connected to the drive block. The drive block is generally cuboid in shape. A rectangular groove is opened at the end opposite the rotating disk to allow the drive column to slide along the length direction. A drive wheel driven by a motor is connected to the lower outer part of the drive block. A limit post hole is opened at the bottom of the upper groove.

[0007] The gripping component includes a positioning frame located on the top of the moving plate. A positioning block is connected to the front surface of the positioning frame via a connecting shaft. A telescopic seat is provided through the inner wall of the rear end. A connecting arm is provided on the top surface of the telescopic seat. A movable curved arm is connected to the other end of the connecting arm. The waist of the movable curved arm is hinged to the surface of the positioning block. The front side of the waist of the movable curved arm is set in a W shape and then passes into the positioning plate. An anti-slip rubber pad is provided on the inner wall of the movable curved arm.

[0008] The mounting box contains a negative electrode and a positive electrode at its front and rear ends. The negative electrode and the positive electrode are connected to an external power source via wires. The negative electrode and the positive electrode are placed horizontally inside the mounting box, and a movable base plate is provided below them. An arc-shaped groove is formed in the middle of the back of the movable base plate, and connecting ears are provided at both ends. A spiral shaft is fitted in the arc-shaped groove. The spiral shaft is driven by a micro motor and meshes with an arc-shaped positioning tooth seat. The arc-shaped positioning tooth seat is mounted on the surface of a support base. The two sides of the support base are rotatably connected to the bottom of the connecting ears.

[0009] Preferably, the mounting box has fixing plates fixedly connected to both outer walls, and a hydraulic cylinder is fixedly connected to the bottom outer wall of the fixing plate, with the bottom of the hydraulic cylinder fixedly connected to the surface of the base.

[0010] Preferably, the positioning plate is close to the inner wall of the mounting box, and the height of the positioning plate extending out of the mounting box is consistent with the height of the moving plate extending out of the mounting box.

[0011] Preferably, the connecting bolt passes through the mounting box and connects to the balance wheel located outside the mounting box.

[0012] Preferably, half of the outer circumference of the rotating disk is equal to the distance between the limiting post hole and the edge of the driving block.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This invention uses a knob to initially adjust the distance adjustment component to the appropriate position for clamping the suspension. Then, the drive wheel transmits power to the swing wheel to finely adjust the position of the moving plate, ensuring the stability of the entire fixture during welding. This prevents instability in the lower support of the fixture when the suspension is subjected to excessive impact during welding, which could cause the clamping part to shift and reduce the welding accuracy of the suspension. The gripping component has a W-shaped movable arm, allowing it to tightly contact the suspension with its inner protruding part while gripping the suspension workpiece, increasing the contact area and improving gripping stability. Furthermore, the multi-segment corrugated design adapts to suspension workpieces of different specifications, enhancing its flexibility. By placing negative and positive electrodes inside the mounting box, iron filings and colloidal impurities are adsorbed onto the electrode surface, preventing impurities from depositing on the suspension surface and causing a decline in the weld quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the adjustment component in this invention;

[0017] Figure 3 This is a schematic diagram of the gripping component in this invention;

[0018] Figure 4 This is a schematic diagram of the structure below the movable base plate of the present invention.

[0019] In the diagram: 1. Base; 2. Support column; 3. Control host; 4. Mounting box; 5. Positioning plate; 6. Positioning shaft; 7. Moving plate; 8. Connecting bolt; 9. Swing wheel; 10. Rotating disk; 11. Drive column; 12. Drive block; 13. Drive wheel; 14. Limiting column hole; 15. Positioning frame; 16. Positioning block; 17. Telescopic seat; 18. Connecting arm; 19. Movable curved arm; 20. Anti-slip pad; 21. Cathode; 22. Anode; 23. Movable base plate; 24. Arc-shaped groove; 25. Connecting ear; 26. Spiral shaft; 27. Arc-shaped positioning tooth seat; 28. Support seat; 29. ​​Fixing plate; 30. Hydraulic cylinder. Detailed Implementation

[0020] The invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0021] like Figure 1 — Figure 4 As shown, a welding fixture for a suspension of an engineering vehicle includes a base 1, a support column 2 on one side of the surface of the base 1, a control host 3 on the top of the support column 2, and two sets of positioning devices on the surface of the base 1 on the outside of the support column 2. The positioning devices include a mounting box 4, an adjustment component inserted into the mounting box 4, and a gripping component connected to the adjustment component.

[0022] The adjustment assembly includes a positioning plate 5 inserted into the mounting box 4. A positioning shaft 6 is located on the lower side of the positioning plate 5. The positioning shaft 6 traverses the front and rear inner walls of the mounting box 4 and passes through the rear wall, controlled by a knob. A movable plate 7 extending out of the mounting box 4 is slidably connected to the surface of the positioning shaft 6. The positioning plate 5 is adjacent to the inner wall of the mounting box 4, and the height of its extension out of the mounting box 4 is the same as the height of the movable plate 7 extending out of the mounting box 4. A connecting bolt 8 is provided on the surface of the movable plate 7. The other end of the connecting bolt 8 is fixedly connected to the top of the balance wheel 9. The connecting bolt 8 passes through the mounting box 4 and connects to the balance wheel 9 located outside the mounting box 4. A linkage shaft is provided on the surface of the balance wheel 9. The linkage shaft is inserted into the center of the rotating disk 10. A drive column 11 is provided on the outer surface of the rotating disk 10. The drive column 11 is inserted into the drive block 12 and slidably connected to the drive block 12. The drive block 12 is integrally formed. It is rectangular in shape, with a rectangular groove at the end opposite the rotating disk 10, allowing the drive column 11 to slide along its length. Half of the outer circumference of the rotating disk 10 is equal to the distance between the limiting post hole 14 and the edge of the drive block 12. The lower outer side of the drive block 12 is connected to a drive wheel 13 driven by a motor, and the bottom of the upper groove has a limiting post hole 14. The drive wheel 14 rotates under the drive of the motor, causing the drive block 12 to rotate. The drive column 11 inside the drive block 12 moves along the rectangular groove along its length, thereby causing the swing wheel 9 to rotate, realizing the slight movement of the moving plate 7. That is, after meeting the initial clamping distance of the suspension, the clamping distance of the suspension is further reduced by the adjustment component, so as to avoid the problem that the lower support of the tooling is unstable when the suspension is subjected to excessive impact force during the welding process, which would cause the clamping part to shift and thus reduce the welding accuracy of the suspension.

[0023] The gripping assembly includes a positioning frame 15 located on the top of the movable plate 7. A positioning block 16 is connected to the front surface of the positioning frame 15 via a connecting shaft. A telescopic seat 17 is provided through the inner wall of the rear end. A connecting arm 18 is provided on the top surface of the telescopic seat 17. A movable curved arm 19 is connected to the other end of the connecting arm 18. The waist of the movable curved arm 19 is hinged to the surface of the positioning block 16. The front side of the waist of the movable curved arm 19 is set in a W shape and then passes into the positioning plate 5. An anti-slip rubber pad 20 is provided on the inner wall of the movable curved arm 19. The movable curved arm 19 is set in a W shape so that when gripping the suspension workpiece, its inner protruding part can make close contact with the suspension, thereby increasing the contact area and improving the stability of gripping.

[0024] The mounting box 4 contains a negative electrode 21 and a positive electrode 22 positioned opposite each other at its front and rear ends. The negative electrode 21 and a positive electrode 22 are connected to an external power source via wires. The negative electrode 21 and a positive electrode 22 are horizontally positioned within the mounting box 4, with a movable base plate 23 below them. An arc-shaped groove 24 is formed in the middle of the back of the movable base plate 23, and connecting ears 25 are provided at both ends. A spiral shaft 26 is fitted within the arc-shaped groove 24. The spiral shaft 26 is driven by a micro motor and meshes with an arc-shaped positioning tooth seat 27. The arc-shaped positioning tooth seat 27 is mounted on the surface of a support base 28, and both sides of the support base 28 are rotatably connected to the bottom of the connecting ears 25. By placing the negative electrode 21 and a positive electrode 22 within the mounting box 4, iron filings, colloidal impurities, etc., are adsorbed onto the electrode surface, preventing impurities from depositing on the suspension surface and causing a decline in the quality of the suspension surface welds.

[0025] The mounting box 4 has fixing plates 29 fixedly connected to both outer walls. A hydraulic cylinder 30 is fixedly connected to the bottom outer wall of the fixing plate 29, and the bottom of the hydraulic cylinder 30 is fixedly connected to the surface of the base 1. The hydraulic cylinder 30 is controlled by the control host 3 to raise or lower the mounting box 4, thereby allowing the height of the parts to be adjusted during welding.

[0026] When workers need to assemble and weld the suspension of the engineering vehicle, they use the control host 3 to rotate the control knob, which drives the positioning shaft 6 to rotate along the length direction, adjusting the distance between the moving plate 7 and the positioning plate 5 to the gripping range. The irregular parts to be welded are then placed between the positioning plate 5 and the moving plate 7. Next, the drive wheel 13 is controlled to rotate, which drives the drive block 12 to rotate. The drive column 13, which is locked inside the drive block 12, slides along the rectangular groove on the surface of the drive block 12. The drive column 13 drives the rotating disk 10 to rotate, causing the swing wheel 9 on the back of the rotating disk 10 to rotate, thus moving the moving plate 7 back towards the positioning plate 5, firmly fixing the lower part of the parts between the positioning plate 5 and the moving plate 7. The telescopic seat 17 is then activated, with both ends of the telescopic seat 17 connected... When the connecting arm 18 is subjected to force, it pushes the end of the movable bending arm 19 to separate. The front ends of the movable bending arms 19 approach each other, thus clamping the parts tightly. Since the front end of the waist of the movable bending arm 19 is W-shaped and its inner side protrudes, it closely abuts the surface of the parts, increasing the contact area between the movable bending arm 19 and the parts and ensuring the gripping force of the movable bending arm 19. During the welding process of the suspension, it is easy to generate scrap iron filings, welding waste liquid droplets, etc. At this time, the negative electrode 21 and the positive electrode 22 are connected, and the electrodes adsorb impurities. Then the power is disconnected, and the impurities on the electrode surface fall into the mounting box 4. The spiral shaft 26 is started, and the spiral shaft 26 causes the movable base plate 23 to rotate along the surface of the arc-shaped positioning tooth seat 27. That is, after the movable base plate 23 is deflected, the impurities on the surface of the movable base plate 23 are poured out.

[0027] In summary, these are merely preferred embodiments of the present invention and are not intended to limit the scope of the invention. All equivalent variations and modifications made in accordance with the shape, structure, features, and spirit of the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. An engineering vehicle suspension welding tool, comprising a base, a support column is arranged on one side of the surface of the base, a control host is arranged on the top of the support column, and two sets of positioning devices arranged on the surface of the base are arranged on the outer side of the support column, characterized in that: The positioning device comprises a mounting box, a distance adjusting assembly inserted into the mounting box, and a grabbing assembly connected with the distance adjusting assembly; The distance adjusting assembly comprises a positioning plate inserted into the mounting box, a positioning shaft arranged on the lower side of the positioning plate, a moving plate slidingly connected with the surface of the positioning shaft and extending out of the mounting box, a connecting bolt arranged on the surface of the moving plate, a balance connected with the other end of the connecting bolt, a linkage shaft arranged on the surface of the balance, the linkage shaft inserted into the center of a rotating disc, a driving column arranged on the outer side of the disc surface of the rotating disc, a driving block in the shape of a cuboid, a rectangular groove arranged on the front end of the driving block, and a driving wheel driven by a motor connected with the lower outer side of the driving block; The grabbing assembly comprises a positioning frame arranged on the top of the moving plate, a positioning block connected with the front end surface of the positioning frame through a connecting shaft, an extension seat arranged on the rear end inner wall of the positioning block, a connecting arm arranged on the top surface of the extension seat, a movable bent arm connected with the other end of the connecting arm, the movable bent arm hinged to the surface of the positioning block, the movable bent arm arranged in the shape of W on the front side of the waist, and an antiskid rubber pad arranged on the inner side wall of the movable bent arm; The mounting box is provided with a negative electrode and a positive electrode on the front and rear ends, the negative electrode and the positive electrode are respectively connected with an external power source through wires, the negative electrode and the positive electrode are horizontally arranged in the mounting box and are provided with a movable bottom plate below, an arc-shaped groove is arranged in the middle of the back of the movable bottom plate, connecting ears are arranged on both ends, a spiral shaft is clamped in the arc-shaped groove, the spiral shaft is driven by a micro motor, the spiral shaft is engaged with an arc-shaped positioning tooth seat, the arc-shaped positioning tooth seat is arranged on the surface of a supporting seat, and the supporting seat is rotatably connected with the bottom of the connecting ears on both sides.

2. The off-highway vehicle suspension welding fixture of claim 1, wherein: The mounting box is provided with a negative electrode and a positive electrode on the front and rear ends, the negative electrode and the positive electrode are respectively connected with an external power source through wires, the negative electrode and the positive electrode are horizontally arranged in the mounting box and are provided with a movable bottom plate below, an arc-shaped groove is arranged in the middle of the back of the movable bottom plate, connecting ears are arranged on both ends, a spiral shaft is clamped in the arc-shaped groove, the spiral shaft is driven by a micro motor, the spiral shaft is engaged with an arc-shaped positioning tooth seat, the arc-shaped positioning tooth seat is arranged on the surface of a supporting seat, and the supporting seat is rotatably connected with the bottom of the connecting ears on both sides.

3. The off-highway vehicle suspension welding fixture of claim 1, wherein: The mounting box is provided with a negative electrode and a positive electrode on the front and rear ends, the negative electrode and the positive electrode are respectively connected with an external power source through wires, the negative electrode and the positive electrode are horizontally arranged in the mounting box and are provided with a movable bottom plate below, an arc-shaped groove is arranged in the middle of the back of the movable bottom plate, connecting ears are arranged on both ends, a spiral shaft is clamped in the arc-shaped groove, the spiral shaft is driven by a micro motor, the spiral shaft is engaged with an arc-shaped positioning tooth seat, the arc-shaped positioning tooth seat is arranged on the surface of a supporting seat, and the supporting seat is rotatably connected with the bottom of the connecting ears on both sides.

4. The off-highway vehicle suspension welding fixture of claim 1, wherein: The mounting box is provided with a negative electrode and a positive electrode on the front and rear ends, the negative electrode and the positive electrode are respectively connected with an external power source through wires, the negative electrode and the positive electrode are horizontally arranged in the mounting box and are provided with a movable bottom plate below, an arc-shaped groove is arranged in the middle of the back of the movable bottom plate, connecting ears are arranged on both ends, a spiral shaft is clamped in the arc-shaped groove, the spiral shaft is driven by a micro motor, the spiral shaft is engaged with an arc-shaped positioning tooth seat, the arc-shaped positioning tooth seat is arranged on the surface of a supporting seat, and the supporting seat is rotatably connected with the bottom of the connecting ears on both sides.

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