Tractor cab framework refitting welding tool

Abstract

The invention discloses a tractor cab framework refitting welding tool, and belongs to the technical field of welding tools. A screw hole is formed in the bottom end of the first threaded rod, and a second threaded rod is installed in the screw hole in a threaded mode. A first sliding block is installed on the first threaded rod in a threaded mode, and an annular supporting plate is horizontally and fixedly installed on the bottom wall of the first sliding block. A second sliding block is installed on the portion, located above the first sliding block, of the first threaded rod in a threaded mode, an annular pressing plate is rotatably installed on the bottom wall of the second sliding block, and the pressing plate and the supporting plate are the same in size. The first threaded rod is sleeved with a corrugated pipe. According to the scheme, a first threaded rod and a second threaded rod are fixed in a cab, then the position of a supporting plate is adjusted, a workpiece is placed on the surface of the supporting plate, a second sliding block drives a pressing plate to apply pressure to the workpiece, and the workpiece can be fixed under the mutual cooperation of the supporting plate and the pressing plate, so that the workpiece is prevented from shaking in the subsequent welding process; and the welding effect is ensured.

Description

Technical Field

[0001] This invention relates to the field of welding fixture technology, and more specifically, to a welding fixture for modifying a tractor cab frame. Background Technology

[0002] The tractor cab is a closed or semi-closed space installed on the tractor, mainly providing an environment for the driver to operate, ride, and protect. The frame of the tractor cab is the foundation for the installation of all other components of the cab, so the frame needs to ensure sufficient strength and rigidity to withstand its own weight, passenger load, vibration and impact forces generated during operation. Its quality directly affects the safety, comfort and overall durability of the cab.

[0003] When adding auxiliary equipment such as air conditioners to the cab frame of a tractor that has already been manufactured and put into use, it is usually necessary to manually cut the original frame, reinforce the structure, and weld the newly installed components.

[0004] However, due to the complex curved structure of the cab frame, manual positioning is prone to positional deviations, resulting in uneven distribution of welding thermal stress, which in turn induces frame deformation, affecting the overall structural strength and assembly accuracy. Consequently, it is difficult to ensure the consistency of the welding process, and the welding quality is prone to fluctuations due to differences in operator skills, affecting the reliability and durability of equipment installation.

[0005] To address this, a welding fixture for modifying the tractor cab frame is proposed. Summary of the Invention

[0006] To address the problems existing in the prior art, the purpose of this invention is to provide a welding fixture for modifying a tractor cab frame, which can improve the welding effect.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A welding fixture for modifying a tractor cab frame, including a first threaded rod; The bottom end of the first threaded rod is provided with a threaded hole, and the second threaded rod is installed in the threaded hole; the first slider is threaded on the first threaded rod, and a circular support plate is horizontally fixed on the bottom wall of the first slider. A second slider is threaded onto the first threaded rod above the first slider. A circular pressure plate is rotatably mounted on the bottom wall of the second slider. The pressure plate is the same size as the support plate. A bellows is fitted onto the first threaded rod. The bellows is located between the first slider and the second slider, and both ends of the bellows are connected to the first slider and the pressure plate, respectively. The pressure plate has a cavity, and air holes are evenly distributed on the bottom wall of the cavity. The first threaded rod is equipped with an air supply mechanism for supplying air to the cavity.

[0009] Further, an annular groove is formed on the bottom wall of the second slider, and a spherical mounting block is slidably installed in the annular groove, and the bottom wall of the mounting block is fixedly connected to the pressing plate.

[0010] Further, the air supply mechanism includes a pressurizing chamber formed on the bellows, and a first conduit extending into the cavity is inserted on the side wall of the pressurizing chamber.

[0011] Further, a circular ring groove is formed on the side wall of the first slider, and a circular ring sleeve is arranged in the circular ring groove. The circular ring sleeve is made of rubber material, and the top wall and the bottom wall of the circular ring sleeve are respectively fixedly connected to the top wall and the bottom wall of the circular ring groove.

[0012] Further, an air inlet valve and a pressure relief valve are fixedly embedded on the side wall of the pressurizing chamber. The first conduit is fixedly installed on the output end of the pressure relief valve, and a second conduit with the bottom end extending into the circular ring groove is fixedly inserted on the side wall of the pressurizing chamber.

[0013] Further, a mounting groove is formed on the top wall of the support plate, and a cylindrical support block is fixedly installed in the mounting groove. The support block is made of rubber material. The ratio of the height of the support block to the depth of the mounting groove is 1.5 - 2, and the ratio of the bottom area of the mounting groove to the bottom area of the support block is 2 - 3.

[0014] Further, a cavity is formed in the support block, and a pressure relief hole is formed at the top end of the side wall of the cavity.

[0015] Further, mounting plates are fixedly installed at the mutually remote ends of the first threaded rod and the second threaded rod. A chute with a longitudinal section of "convex" shape is formed on the mutually remote side of the two mounting plates, and an extension rod is slidably installed in each chute.

[0016] Further, a connecting rope is commonly installed between the side wall of the chute and the extension rod.

[0017] Further, an elastic rope is fixedly installed in the air hole, and a flow disturbing block is fixedly installed on the elastic rope.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) In this solution, the first threaded rod and the second threaded rod are fixed to the cab, then the position of the support plate is adjusted, the workpiece is placed on the surface of the support plate, and then the second slider is used to drive the pressing plate to apply pressure to the workpiece. Thus, under the mutual cooperation of the support plate and the pressing plate, the workpiece can be fixed, so as to prevent the workpiece from shaking during the subsequent welding process and ensure the welding effect.

[0019] (2) This solution uses the cooperation of cavity, air hole and air supply mechanism. During the downward movement of the pressure plate, the air supply mechanism provides gas to the cavity, and the cavity exhausts gas outward through the air hole. This allows the airflow to impact the surface of the workpiece, clean the impurities on the surface of the workpiece, and ensure that the pressure plate can directly contact the top wall of the workpiece, thereby improving the fixing effect of the pressure plate on the workpiece.

[0020] (3) With the cooperation of the support block and the mounting groove, the support block can lift the workpiece when the pressure plate does not apply pressure to the workpiece. Therefore, when the ring pushes the workpiece, it can prevent the workpiece from sliding on the surface of the pallet. When the pressure plate applies pressure to the workpiece, the support block is also subjected to downward pressure. At this time, the support block is squeezed and enters the mounting groove, thus ensuring that the workpiece can directly contact the top wall of the pallet and lift the workpiece through the pallet.

[0021] (4) By setting a cavity and a pressure relief hole on the support block, the gas in the cavity can be discharged through the pressure relief hole when the support block is squeezed. The gas discharged from the pressure relief hole impacts the top wall of the pallet, thereby cleaning up the impurities that fall from the bottom wall of the workpiece to the top wall of the pallet, ensuring that the workpiece can directly contact the top wall of the pallet, and improving the stability of the workpiece in the subsequent welding process. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A; Figure 4 For the present invention Figure 2 Enlarged structural diagram at point B; Figure 5 For the present invention Figure 2 Enlarged structural diagram at point C; Figure 6 For the present invention Figure 2 Enlarged structural diagram at point D; Figure 7 This is a schematic diagram of the combined structure of the mounting plate and extension rod of the present invention.

[0023] Explanation of the labels in the diagram: 1. First threaded rod; 2. Second threaded rod; 3. First slider; 4. Support plate; 5. Second slider; 6. Pressure plate; 7. Bellows; 8. Cavity; 9. Air hole; 10. Annular groove; 11. Mounting block; 12. Pressurization chamber; 13. First conduit; 14. Annular groove; 15. Annular sleeve; 16. Inlet valve; 17. Pressure relief valve; 18. Second conduit; 19. Mounting groove; 20. Support block; 21. Cavity; 22. Pressure relief hole; 23. Mounting plate; 24. Extension rod; 25. Connecting rope; 26. Elastic rope; 27. Turbulence block. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention. Example 1:

[0025] Please see Figures 1 to 7 A welding fixture for modifying a tractor cab frame, including a first threaded rod 1; The bottom end of the first threaded rod 1 has a threaded hole, and the second threaded rod 2 is installed in the threaded hole. The length of the second threaded rod 2 extending out of the threaded hole can be controlled by turning the second threaded rod 2. Therefore, during operation, the first threaded rod 1 is first placed vertically in the cab, then the top end of the first threaded rod 1 is made to abut against the top wall of the cab, and then the second threaded rod 2 is turned so that the bottom end of the second threaded rod 2 contacts the bottom wall of the cab, thereby fixing the first threaded rod 1 and the second threaded rod 2 in the cab. A first slider 3 is threaded onto the first threaded rod 1. A circular support plate 4 is horizontally fixed on the bottom wall of the first slider 3. During welding, the first slider 3 is rotated to move along the first threaded rod 1 to the designated position. Then, the part to be welded is placed on the top wall of the support plate 4, so that the part to be welded can be lifted steadily during the welding process and prevent the part to be welded from shaking. A second slider 5 is threadedly installed on the first threaded rod 1 above the first slider 3. A circular pressure plate 6 is rotatably installed on the bottom wall of the second slider 5. The pressure plate 6 is the same size as the support plate 4. Therefore, when the second slider 5 moves down, the pressure plate 6 can cover the surface of the support plate 4. A bellows 7 is fitted on the first threaded rod 1. The bellows 7 is located between the first slider 3 and the second slider 5, and the two ends of the bellows 7 are connected to the first slider 3 and the pressure plate 6 respectively. Therefore, when the workpiece is placed on the surface of the support plate 4, it can prevent the workpiece from contacting the first threaded rod 1 and play a role in preventing the first threaded rod 1 from being bumped. The pressure plate 6 has a cavity 8, and air holes 9 are evenly distributed on the bottom wall of the cavity 8. The first threaded rod 1 is equipped with an air supply mechanism for supplying air to the cavity 8. During the downward movement of the pressure plate 6, the air supply mechanism provides gas to the cavity 8, and the cavity 8 then exhausts gas outward through the air holes 9. This allows the airflow to impact the surface of the workpiece, cleaning the impurities on the surface of the workpiece and ensuring that the pressure plate 6 can directly contact the top wall of the workpiece, thereby improving the fixing effect of the pressure plate 6 on the workpiece.

[0026] During the operation, the first threaded rod 1 and the second threaded rod 2 are first vertically fixed in the cab, then the first slider 3 is rotated to move the first slider 3 to the specified height, and then the part to be welded is placed on the surface of the pallet 4.

[0027] Then rotate the second slider 5, which drives the pressure plate 6 to move downward, so that the pressure plate 6 fits against the top wall of the part to be welded.

[0028] Then, the second slider 5 continues to rotate, and the second slider 5 drives the pressure plate 6 to apply pressure to the workpiece. Since the pressure plate 6 is rotatably set on the bottom wall of the second slider 5, when the pressure plate 6 contacts the workpiece and the second slider 5 continues to rotate, it can prevent the pressure plate 6 from rotating on the surface of the workpiece under the action of the friction between the pressure plate 6 and the workpiece, so that the pressure plate 6 only moves downward along the first threaded rod 1, thereby clamping the workpiece tightly by the pressure plate 6 and the support plate 4, thus ensuring that the workpiece can be stably fixed on the surface of the support plate 4.

[0029] Therefore, under the action of the support plate 4 and the pressure plate 6, the parts to be welded can be clamped, thereby preventing the parts to be welded from shaking during the welding process and improving the welding effect.

[0030] like Figure 6 As shown, an annular groove 10 is provided on the bottom wall of the second slider 5, and a spherical mounting block 11 is slidably installed in the annular groove 10. The bottom wall of the mounting block 11 is fixedly connected to the pressure plate 6, so the pressure plate 6 can rotate together with the mounting block 11.

[0031] like Figure 5 As shown, the gas supply mechanism includes a pressurization chamber 12 opened on the bellows 7, and a first conduit 13 extending into the cavity 8 is inserted into the side wall of the pressurization chamber 12.

[0032] When the second slider 5 moves toward the first slider 3, the bellows 7 is squeezed, and the pressurization chamber 12 is also squeezed. During this process, the gas in the pressurization chamber 12 flows into the cavity 8 through the first conduit 13, thereby supplying gas to the cavity 8.

[0033] like Figure 3As shown, a circular groove 14 is provided on the side wall of the first slider 3, and a circular sleeve 15 is provided inside the circular groove 14. The circular sleeve 15 is made of rubber material, and the top wall and bottom wall of the circular sleeve 15 are fixedly connected to the top wall and bottom wall of the circular groove 14, respectively.

[0034] An intake valve 16 and a pressure relief valve 17 are fixedly embedded on the side wall of the pressurization chamber 12. The first conduit 13 is fixedly installed on the output end of the pressure relief valve 17. A second conduit 18 with its bottom end extending into the annular groove 14 is fixedly inserted into the side wall of the pressurization chamber 12.

[0035] When the pressurizing chamber 12 is compressed, the gas in the pressurizing chamber 12 will first be discharged into the annular groove 14 through the second conduit 18. At this time, the annular sleeve 15 expands and applies a horizontal thrust to the workpiece on the surface of the support plate 4, so that the workpiece is tightly attached to the part to be welded. After the annular sleeve 15 is deformed to the maximum extent, the gas in the pressurizing chamber 12 begins to be discharged through the pressure relief valve 17 and the first conduit 13. When the pressurizing chamber 12 returns to its original state, the pressurizing chamber 12 draws air from the outside through the air inlet valve 16 to prepare for work again.

[0036] like Figure 4 As shown, a mounting groove 19 is provided on the top wall of the tray 4. A cylindrical support block 20 is fixedly installed in the mounting groove 19. The support block 20 is made of rubber material. The ratio of the height of the support block 20 to the depth of the mounting groove 19 is 1.5-2. Therefore, the top of the support block 20 is located above the top wall of the tray 4. The ratio of the bottom area of ​​the mounting groove 19 to the bottom area of ​​the support block 20 is 2-3. Therefore, the mounting groove 19 can accommodate the support block 20.

[0037] By setting the support block 20, the workpiece can be supported when the pressure plate 6 does not apply pressure to the workpiece. Therefore, when the ring sleeve 15 pushes the workpiece, it can prevent the workpiece from sliding on the surface of the pallet 4, thus protecting the workpiece.

[0038] When the pressure plate 6 applies pressure to the workpiece, the support block 20 is also subjected to downward pressure. At this time, the support block 20 is squeezed and enters the mounting groove 19, thereby ensuring that the workpiece can directly contact the top wall of the pallet 4 and lift the workpiece through the pallet 4.

[0039] like Figure 4 As shown, a cavity 21 is provided on the support block 20, and a pressure relief hole 22 is provided at the top of the side wall of the cavity 21.

[0040] When the support block 20 is squeezed, the gas in the cavity 21 is discharged through the pressure relief hole 22. The gas discharged from the pressure relief hole 22 impacts the top wall of the support plate 4, thereby cleaning up the impurities that have fallen from the bottom wall of the workpiece to the top wall of the support plate 4, ensuring that the workpiece can directly contact the top wall of the support plate 4, and improving the stability of the workpiece in the subsequent welding process.

[0041] like Figure 2 As shown in the figure, mounting plates 23 are fixedly installed at the ends of the first threaded rod 1 and the second threaded rod 2 that are away from each other. On the sides of the two mounting plates 23 that are away from each other, chutes with a "convex" cross-section are provided, and an extension rod 24 is slidably installed in each chute.

[0042] When installing the first threaded rod 1 and the second threaded rod 2, the extension rod 24 is pulled out from the chute. At this time, the surface of the extension rod 24 can contact the inner wall of the cab, increasing the contact area, thereby improving the support effect on the first threaded rod 1 and the second threaded rod 2, enhancing the stability of the first threaded rod 1 and the second threaded rod 2. Thus, when the workpiece is placed on the surface of the support plate 4, it can prevent the workpiece from shaking.

[0043] As Figure 7 shown, a connecting rope 25 is jointly installed between the side wall of the chute and the extension rod 24, so as to prevent the extension rod 24 from falling during transportation.

[0044] As Figure 6 shown, an elastic rope 26 is fixedly installed in the air hole 9, and a spoiler block 27 is fixedly installed on the elastic rope 26. When the airflow impacts the spoiler block 27, the spoiler block 27 shakes, thereby being able to change the direction of the airflow discharged from the air hole 9, increasing the contact area between the airflow and the top wall of the workpiece, and improving the cleaning effect on the impurities on the surface of the workpiece.

[0045] Usage method: During the working process, first vertically fix the first threaded rod 1 and the second threaded rod 2 in the cab, then rotate the first slider 3 to move the first slider 3 to the specified height, and then place the component to be welded on the surface of the support plate 4.

[0046] Then rotate the second slider 5, and drive the pressing plate 6 to move downward through the second slider 5, so that the pressing plate 6 fits against the top wall of the component to be welded.

[0047] Then continue to rotate the second slider 5, and drive the pressing plate 6 to apply pressure to the workpiece through the second slider 5. Since the pressing plate 6 is rotatably arranged on the bottom wall of the second slider 5, when the pressing plate 6 contacts the workpiece and the second slider 5 continues to rotate, it can prevent the pressing plate 6 from rotating on the surface of the workpiece under the action of the frictional force between the pressing plate 6 and the workpiece, so that the pressing plate 6 only moves downward along the first threaded rod 1, thereby tightly clamping the workpiece between the pressing plate 6 and the support plate 4, ensuring that the workpiece can be stably fixed on the surface of the support plate 4.

[0048] Therefore, under the action of the support plate 4 and the pressing plate 6, the component to be welded can be clamped, thereby preventing the workpiece from shaking during the welding process and improving the welding effect during the welding process.

[0049] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A welding tool for modifying the cab skeleton of a tractor, including a first threaded rod (1); It is characterized in that: A threaded hole is provided at the bottom end of the first threaded rod (1), and a second threaded rod (2) is installed in the threaded hole in a threaded manner; a first slider (3) is installed on the first threaded rod (1) in a threaded manner, and a circular support plate (4) is horizontally and fixedly installed on the bottom wall of the first slider (3); A second slider (5) is installed on the first threaded rod (1) in a threaded manner at a position above the first slider (3), and a circular pressing plate (6) is rotatably installed on the bottom wall of the second slider (5), and the pressing plate (6) has the same size as the support plate (4); A corrugated pipe (7) is sleeved on the first threaded rod (1), the corrugated pipe (7) is located between the first slider (3) and the second slider (5), and both ends of the corrugated pipe (7) are respectively connected to the first slider (3) and the pressing plate (6); A cavity (8) is provided on the pressing plate (6), air holes (9) are uniformly provided on the bottom wall of the cavity (8), and an air supply mechanism for supplying air to the cavity (8) is provided on the first threaded rod (1).

2. The tractor cab frame modification welding fixture according to claim 1, characterized in that: An annular groove (10) is provided on the bottom wall of the second slider (5), a spherical mounting block (11) is slidably installed in the annular groove (10), and the bottom wall of the mounting block (11) is fixedly connected to the pressing plate (6).

3. The tractor cab frame modification welding fixture according to claim 2, characterized in that: The air supply mechanism includes a pressurizing chamber (12) provided on the corrugated pipe (7), and a first conduit (13) extending into the cavity (8) is inserted on the side wall of the pressurizing chamber (12).

4. The tractor cab frame modification welding fixture according to claim 3, characterized in that: An annular groove (14) is provided on the side wall of the first slider (3), an annular sleeve (15) is provided in the annular groove (14), the annular sleeve (15) is made of rubber material, and the top wall and the bottom wall of the annular sleeve (15) are respectively fixedly connected to the top wall and the bottom wall of the annular groove (14).

5. The tractor cab frame modification welding fixture according to claim 4, characterized in that: An air inlet valve (16) and a pressure relief valve (17) are fixedly embedded on the side wall of the pressurizing chamber (12), the first conduit (13) is fixedly installed on the output end of the pressure relief valve (17), and a second conduit (18) with the bottom end extending into the annular groove (14) is fixedly inserted on the side wall of the pressurizing chamber (12).

6. The tractor cab frame modification welding fixture according to claim 1, characterized in that: An installation groove (19) is provided on the top wall of the support plate (4), a cylindrical support block (20) is fixedly installed in the installation groove (19), the support block (20) is made of rubber material, the ratio of the height of the support block (20) to the depth of the installation groove (19) is 1.5 - 2, and the ratio of the bottom area of the installation groove (19) to the bottom area of the support block (20) is 2 - 3.

7. The tractor cab frame modification welding fixture according to claim 6, characterized in that: A cavity (21) is provided on the support block (20), and a pressure relief hole (22) is provided at the top end of the side wall of the cavity (21).

8. The tractor cab frame modification welding fixture according to claim 1, characterized in that: Both ends of the first threaded rod (1) and the second threaded rod (2) away from each other are fixedly installed with mounting plates (23), and a chute with a "convex" cross-section is provided on one side away from each other of the two mounting plates (23), and an extension rod (24) is slidably installed in each chute.

9. The tractor cab frame modification welding fixture according to claim 8, characterized in that: A connecting rope (25) is jointly installed between the side wall of the chute and the extension rod (24).

10. The tractor cab frame modification welding fixture according to claim 1, characterized in that: An elastic rope (26) is fixedly installed inside the air hole (9), and a baffle (27) is fixedly installed on the elastic rope (26).

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