A roof inverse deformation tooling

Abstract

The utility model discloses a roof reverse deformation frock, including base composition, lead screw composition and nylon block, base composition includes hollow cylinder sleeve and base, and hollow cylinder sleeve sets up on the base, and lead screw composition includes outer thread stem and hollow inner thread pipe cover, and outer thread stem sets up in the hollow inner thread pipe cover, and outer thread stem is connected together with hollow inner thread pipe cover through the thread, and hollow inner thread pipe cover sets up in the hollow cylinder sleeve, and the one end of outer thread stem not set up in the hollow inner thread pipe cover is connected with crossbeam, and the nylon block is set up on the crossbeam. Use the utility model frock to have improved work efficiency and construction quality, guarantee production progress, satisfy the need of production use.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical engineering, specifically relating to a roof anti-deformation tooling. Background Technology

[0002] Aluminum alloy car bodies are popular with urban transportation companies and railway departments worldwide due to their advantages such as light weight, corrosion resistance, smooth appearance, and ease of manufacturing complex and aesthetically pleasing curved surfaces. Currently, over 30,000 aluminum alloy urban rail vehicles and railway transport vehicles are in operation, and some developing countries are also vigorously developing aluminum alloy car bodies and have the capacity for mass production. However, with increasing production, on-site construction efficiency needs improvement. When welding the reverse assembly parts after welding the forward assembly parts of the aluminum alloy subway car body roof, welding long parts can cause roof shrinkage and deformation due to the large amount of welding, resulting in excessive deviations in the roof edge contour, which is difficult to adjust. On-site, hydraulic jacks are used to tighten the weld seams upwards, and F-shaped clamps are used to pull down the two sides of the roof edge before welding the reverse assembly parts. Because the height and stroke of hydraulic jacks are limited, pads need to be added to meet the height requirements, which makes operation inconvenient. Furthermore, because the welds that need to be tightened are long, multiple hydraulic jacks are required to meet the usage requirements, which requires the cooperation of many people, resulting in low work efficiency and affecting the production schedule. Therefore, it is necessary to design a roof anti-deformation tooling to pre-deform the roof during the welding of anti-assembly parts. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a roof anti-deformation tooling that can perform pre-deformation during the welding of anti-assembly parts on the roof of an aluminum alloy subway car body, so that the contour of the anti-assembly parts meets the requirements after welding.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A roof anti-deformation tooling includes a base assembly, a lead screw assembly, and a nylon block. The base assembly includes a hollow cylindrical sleeve and a base, with the hollow cylindrical sleeve mounted on the base. The lead screw assembly includes an externally threaded rod and a hollow internally threaded sleeve. The externally threaded rod is disposed within the hollow internally threaded sleeve and is threadedly connected to the hollow internally threaded sleeve. The hollow internally threaded sleeve is disposed within the hollow cylindrical sleeve. One end of the externally threaded rod not disposed within the hollow internally threaded sleeve is connected to a crossbeam, and a nylon block is disposed on the crossbeam.

[0005] Furthermore, the hollow cylindrical sleeve is provided with a first pin hole; the hollow internal threaded sleeve is provided with a second pin hole corresponding to the first pin hole. When the hollow internal threaded sleeve is placed inside the hollow cylindrical sleeve, after the first pin hole and the second pin hole are aligned, a pin is used to pass through the first pin hole and the second pin hole, thereby connecting the hollow cylindrical sleeve and the hollow internal threaded sleeve together.

[0006] Furthermore, there are at least three first and second axle pin holes, one above the other. When the second axle pin hole at the bottom corresponds to the first axle pin hole at different heights, the fixture will present different heights, so that the height of the fixture can be coarsely adjusted as needed, making it easier to weld and support the roof.

[0007] Furthermore, a limiting block is provided on the outer side of the upper end of the hollow internal threaded sleeve. The limiting block and the hollow internal threaded sleeve are an integral structure. A limiting threaded hole is provided on the limiting block. The limiting threaded hole communicates with the inner cavity of the hollow internal threaded sleeve. A fastening screw for fixing the external threaded rod is provided in the limiting threaded hole.

[0008] Furthermore, the fastening screw is a wing-shaped fastening screw, which is easy to screw in or out, so as to tighten or loosen the external thread rod inside the hollow internal thread sleeve.

[0009] Furthermore, a connecting sleeve is provided at the lower end of the crossbeam, which is used to connect with the external threaded rod; Furthermore, the end of the externally threaded rod can be inserted into the connecting sleeve, and the end of the externally threaded rod can slide relative to the inner wall of the connecting sleeve, that is, the end of the externally threaded rod can rotate inside the connecting sleeve.

[0010] The upper end of the crossbeam is provided with screw holes, and the nylon block is provided with countersunk screw holes that run vertically through it. The nylon block is fixed to the crossbeam by using countersunk screws through the countersunk screw holes and the screw holes.

[0011] The nylon blocks are installed to prevent the roof from being scratched or damaged when the crossbeams come into contact with it, thus ensuring a clean and aesthetically pleasing appearance.

[0012] Furthermore, an adjustment hole is provided on the side of the end of the external threaded rod that connects to the connecting sleeve. After the external threaded rod is fitted into the connecting sleeve, the adjustment hole will not penetrate into the connecting sleeve. An adjustment pin is provided in the adjustment hole. The adjustment hole and the adjustment pin cooperate with each other. By rotating the adjustment pin, the height of the external threaded rod in the hollow internal threaded sleeve can be adjusted, so as to fine-tune the height of the tooling and further adjust the height of the tooling.

[0013] The combination of coarse and fine adjustments allows for more precise support of the roof, with a total adjustment height exceeding the stroke height of a typical hydraulic jack, and is also more convenient to adjust.

[0014] Furthermore, stops are provided between the two sides of the hollow cylindrical sleeve and the base to fix the hollow cylindrical sleeve.

[0015] Furthermore, at least two sets of the base assembly and the lead screw assembly are provided, respectively located at the lower ends of the left and right sides of the crossbeam.

[0016] The beneficial effects of this utility model are as follows: 1. In this utility model, through the cooperation between the base assembly and the lead screw assembly, the hollow internal threaded sleeve with the second shaft pin hole is placed inside the hollow cylindrical sleeve with the first shaft pin hole. When the second shaft pin hole at the bottom corresponds to the first shaft pin hole at different heights, the total length of the hollow internal threaded sleeve and the hollow cylindrical sleeve will have different heights, so that the height of this tooling can be adjusted as needed, making it easier to support the roof, and thus pre-deforming the roof during the welding of the reverse assembly parts.

[0017] 2. In this utility model, an adjustment hole is opened on the side of the end of the external threaded rod that is connected to the connecting sleeve. An adjustment pin is provided in the adjustment hole. The adjustment hole and the adjustment pin cooperate. By rotating the adjustment pin, the height of the external threaded rod in the hollow internal threaded sleeve is adjusted, so as to fine-tune the height of this tooling and further adjust the height of this tooling.

[0018] 3. In this utility model, the long weld seam is tightened by the crossbeam. It only requires two assembled base components and a screw component to be connected to the lower side of the left and right ends of the crossbeam. This can replace the operation that previously required multiple hydraulic jacks to meet the usage requirements, improve work efficiency, and speed up the production progress.

[0019] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some schematic diagrams of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is an overall usage diagram of a vehicle roof anti-deformation tool according to this utility model; Figure 2 for Figure 1 Side view; Figure 3 This is a schematic diagram of the structure of the base assembly and the lead screw assembly in this utility model; Figure 4 for Figure 3 A schematic diagram of the structure consisting of the central base; Figure 5 for Figure 3 A schematic diagram of the structure of the lead screw; Figure 6 for Figure 5 Side view.

[0022] In the diagram, 1-Nylon block, 2-Hollow cylindrical sleeve, 3-Base, 4-Stop, 5-First shaft pin hole, 6-External threaded rod, 7-Hollow internal threaded sleeve, 8-Second shaft pin hole, 9-Shaft pin, 10-Limiting block, 11-Limiting threaded hole, 12-Fasting screw, 13-Crossbeam, 14-Connecting sleeve, 15-Counterhead screw hole, 16-Counterhead screw, 17-Adjusting hole, 18-Adjusting shaft pin, 19-Expansion screw. Detailed Implementation

[0023] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0025] The names of the messages or information exchanged between the multiple devices in this embodiment of the invention are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0026] Example: Figure 1-6 As shown, A roof anti-deformation tooling includes a base assembly, a lead screw assembly, and a nylon block 1.

[0027] The base consists of a hollow cylindrical sleeve 2 and a base 3. The hollow cylindrical sleeve 2 is mounted on the base 3. Stops 4 are welded between the two sides of the hollow cylindrical sleeve 2 and the base 3 to fix the hollow cylindrical sleeve 2. The hollow cylindrical sleeve 2 is provided with three first shaft pin holes 5 distributed vertically.

[0028] The lead screw consists of an external threaded rod 6 and a hollow internal threaded sleeve 7. The external threaded rod 6 is disposed inside the hollow internal threaded sleeve 7 and is connected to the hollow internal threaded sleeve 7 by threads. The external threaded rod 6 can be screwed in and out of the hollow internal threaded sleeve 7 by threads. The hollow internal threaded sleeve 7 is disposed inside the hollow cylindrical sleeve 2.

[0029] The hollow internal threaded sleeve 7 is provided with three second shaft pin holes 8 corresponding to the first shaft pin hole 5. When the hollow internal threaded sleeve 7 is placed inside the hollow cylindrical sleeve 2, after the first shaft pin hole 5 and the second shaft pin hole 8 are aligned, the shaft pin 9 passes through the first shaft pin hole 5 and the second shaft pin hole 8, thereby connecting the hollow cylindrical sleeve 2 and the hollow internal threaded sleeve 7 together.

[0030] The pivot pin 9 can both fix the lead screw assembly and adjust the height of the lead screw assembly to increase the tooling stroke. Therefore, this tooling has good usability and economy and strong versatility.

[0031] When the second axle pin hole 8 at the bottom corresponds to the first axle pin hole 5 at different heights, the fixture will present different heights, so that the height of the fixture can be roughly adjusted as needed, making it easier to weld and support the roof.

[0032] A limiting block 10 is provided on the outer side of the upper end of the hollow internal threaded tube sleeve 7. The limiting block 10 and the hollow internal threaded tube sleeve 7 are an integral structure. A limiting threaded hole 11 is provided on the limiting block 10. The limiting threaded hole 11 communicates with the inner cavity of the hollow internal threaded tube sleeve 7. A butterfly-shaped fastening screw 12 for fixing the external threaded rod 6 is provided in the limiting threaded hole 11, which is convenient to screw in or out, so as to tighten or loosen the external threaded rod 6 inside the hollow internal threaded tube sleeve 7.

[0033] One end of the external threaded rod 6 that is not set inside the hollow internal threaded sleeve 7 is connected to the lower side of one end of the crossbeam 13. The lower side of the other end of the crossbeam 13 is connected to another set of base components and screw components of the same specification. The two assembled sets of base components and screw components together support a crossbeam 13. A connecting sleeve 14 is set at the lower end of the crossbeam 13, and the connecting sleeve 14 is used to connect to the corresponding external threaded rod 6.

[0034] The end of the external threaded rod 6 can be inserted into the connecting sleeve 14, and the end of the external threaded rod 6 can slide relative to the inner wall of the connecting sleeve 14, that is, the end of the external threaded rod 6 can rotate inside the connecting sleeve 14.

[0035] An adjustment hole 17 is provided on the side of the end of the external threaded rod 6 that is connected to the connecting sleeve 14. After the external threaded rod 6 is fitted into the connecting sleeve 14, the adjustment hole 17 will not penetrate into the connecting sleeve 14. An adjustment pin 18 is provided in the adjustment hole 17. The adjustment hole 17 and the adjustment pin 18 cooperate. By rotating the adjustment pin 18, the height of the external threaded rod 6 in the hollow internal threaded sleeve 7 can be adjusted, so as to fine-tune the height of this tooling and further adjust the height of this tooling.

[0036] The upper end of the crossbeam 13 is provided with screw holes, and the nylon block 1 is provided with countersunk screw holes 15 that run vertically through it. The countersunk screws 16 are used to fix the nylon block 1 to the crossbeam 13 through the countersunk screw holes 15 and the screw holes.

[0037] This utility model has a simple structure and strong versatility, applicable to most vehicle roofs. During operation, the roof anti-deformation fixture in this embodiment is placed below the roof to be welded at the corresponding weld seam. The base 3 is fixed with expansion screws 19, and the roof edge is secured using F-clamps. First, adjust the height of the hollow internal threaded sleeve 7 within the hollow cylindrical sleeve 2 according to the roof's height. Then, fine-tune by rotating the adjusting pin 18 on the external threaded rod 6 according to the tightening effect, so that the fixture presses upwards against the weld seam, achieving the pre-deformation effect. Finally, tighten the fastening screws 12 on the internal threaded sleeve to fix the external threaded rod 6, and welding of the reverse-assembled parts can begin. Using this utility model fixture improves work efficiency and construction quality, ensures production progress, and meets production needs.

[0038] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A roof anti-deformation tooling, comprising a base assembly, a lead screw assembly, and a nylon block, characterized in that: The base assembly includes a hollow cylindrical sleeve and a base. The hollow cylindrical sleeve is disposed on the base. The lead screw assembly includes an externally threaded rod and a hollow internally threaded sleeve. The externally threaded rod is disposed inside the hollow internally threaded sleeve and is connected to the hollow internally threaded sleeve by threads. The hollow internally threaded sleeve is disposed inside the hollow cylindrical sleeve. One end of the externally threaded rod that is not disposed inside the hollow internally threaded sleeve is connected to a crossbeam. A nylon block is disposed on the crossbeam.

2. The anti-deformation tooling for vehicle roofs according to claim 1, characterized in that: The hollow cylindrical sleeve is provided with a first pin hole; the hollow internal threaded sleeve is provided with a second pin hole corresponding to the first pin hole. After the first pin hole and the second pin hole are aligned, they are connected together by a pin, thereby connecting the hollow cylindrical sleeve and the hollow internal threaded sleeve together.

3. The anti-deformation tooling for vehicle roofs according to claim 2, characterized in that: A limiting block is provided on the outer side of the upper end of the hollow internal threaded sleeve. The limiting block and the hollow internal threaded sleeve are an integral structure. A limiting threaded hole is provided on the limiting block. The limiting threaded hole communicates with the inner cavity of the hollow internal threaded sleeve. A fastening screw for fixing the external threaded rod is provided in the limiting threaded hole.

4. The anti-deformation tooling for vehicle roofs according to claim 3, characterized in that: The lower end of the crossbeam is provided with a connecting sleeve, which is used to connect with the external threaded rod; the upper end of the crossbeam is provided with a screw hole, and the nylon block is provided with a countersunk screw hole that runs through the top and bottom, and the countersunk screw is used to fix the nylon block to the crossbeam through the countersunk screw hole and the screw hole.

5. The anti-deformation tooling for vehicle roofs according to claim 4, characterized in that: An adjustment hole is provided on one side of the external threaded rod that connects to the connecting sleeve. An adjustment pin is provided in the adjustment hole. The adjustment hole and the adjustment pin cooperate to adjust the height of the external threaded rod inside the hollow internal threaded sleeve by rotating the adjustment pin.

6. The anti-deformation tooling for vehicle roofs according to claim 5, characterized in that: The hollow cylindrical sleeve has stops on both sides between it and the base for fixing the hollow cylindrical sleeve.

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