Vehicle body side wall doorway size precision adjusting device

Abstract

The utility model discloses a vehicle body side wall doorway size precision adjusting device which comprises a base, an installation frame is connected to the base in a sliding mode, an installation plate is connected to the middle of the inner side of the installation frame, and three sets of bidirectional size precision maintaining assemblies are connected to the installation plate. And the end part of the bidirectional dimensional precision keeping assembly penetrates to the outer side of the mounting frame. The two-way size precision maintaining assembly comprises two first screw rods, the two first screw rods are connected to the two sides of the mounting plate respectively, each first screw rod is sleeved with a sleeve, and one end of each sleeve penetrates to the outer side of the mounting frame and is connected with a wall and door clamping assembly; and the first screw rod is connected with a thread adjusting sleeve. According to the vehicle body side wall doorway size precision adjusting device, the existing defects are overcome, and the wall door is adjusted and fixed, so that the wall door does not deform, and the size precision is not affected.

Description

Technical Field

[0001] This utility model relates to a device for adjusting the size accuracy of the doorway on the side wall of a vehicle. Background Technology

[0002] Aluminum alloy car bodies for high-speed trains are a widely used structural form in modern high-speed train manufacturing, with many advantages and unique manufacturing processes.

[0003] Its main feature is its light weight. The density of aluminum alloy is about one-third that of steel. Using aluminum alloy to manufacture the car body can significantly reduce the weight of the train. For example, an aluminum alloy car body with a total length of nearly 25 meters weighs significantly less than a steel car body of the same size. This is beneficial for increasing the train's operating speed, reducing energy consumption, and reducing wear and tear on the tracks.

[0004] High strength: By rationally selecting aluminum alloy materials and optimizing the car body structure design, such as using high-strength aluminum alloy grades like 7N01 and 6005A, the car body can ensure sufficient strength and stability under high-speed operation and complex stress conditions, meeting the requirements for safe train operation.

[0005] Excellent corrosion resistance: Aluminum alloys easily form a dense oxide film in the air, which can effectively prevent corrosion from corrosive media. Compared with stainless steel car bodies, aluminum alloy car bodies have comparable or even better corrosion resistance, which can extend the service life of vehicles and reduce maintenance costs.

[0006] Good processing performance: Aluminum alloy has good plasticity and machinability, and can be easily processed into various complex shapes of profiles and parts through extrusion, stretching, bending and other processes. This facilitates the overall structural design and manufacturing of the car body, and can easily realize complex car body shape designs to meet the requirements of train appearance and aerodynamics.

[0007] Excellent sealing: The welding and assembly process of the aluminum alloy car body ensures excellent sealing, providing passengers with a comfortable interior environment, effectively blocking external noise, dust and wind and rain, and also helping to improve the train's sound insulation and noise reduction effect.

[0008] The vehicle body side door is connected to the vehicle body by welding. However, the high temperature generated during welding can cause the door to deform, which changes the dimensional accuracy of the door and affects the installation of subsequent components. The existing dimensional accuracy adjustment device is used to fix both ends of the door. However, the existing dimensional accuracy adjustment device is a single-unit structure, which can only fix one point on each side of the opposite face. Welding deformation will still occur in the unfixed position, affecting the dimensional accuracy. Therefore, a dimensional accuracy adjustment device for the side door of the vehicle body is proposed to address the above problems. Utility Model Content

[0009] The purpose of this utility model is to overcome the existing defects and provide a vehicle body side wall door size accuracy adjustment device, which adjusts and fixes the door so that the door will not deform and affect the size accuracy.

[0010] To achieve the above objectives, this utility model provides the following technical solution: a vehicle body side wall door size accuracy adjustment device, including a base, a mounting bracket slidably connected to the base, a mounting plate connected to the inner center of the mounting bracket, and three sets of bidirectional size accuracy maintaining components connected to the mounting plate, the ends of the bidirectional size accuracy maintaining components extending to the outer side of the mounting bracket.

[0011] Preferably, the bidirectional dimensional accuracy maintaining assembly includes two first screws, which are respectively connected to both sides of the mounting plate. Each first screw is fitted with a sleeve, one end of which extends through to the outside of the mounting frame and is connected to the wall door clamping assembly. A threaded adjusting sleeve is connected to the first screw.

[0012] Preferably, the wall door clamping assembly includes a U-shaped component, the back of which is connected to the sleeve, and threaded holes are respectively opened on both sides of the U-shaped component and each is connected to a second screw. The inner end of each second screw is connected to a clamping component.

[0013] Preferably, a limiting slide groove is connected to the side wall of the mounting bracket, and multiple limiting slide bars are connected to the outer wall of the sleeve, with the multiple limiting slide bars slidably connected to the limiting slide groove.

[0014] Preferably, the base has first sliding grooves on both sides, and the lower end of the mounting bracket is connected to a sliding member and slidably connected within the first sliding groove.

[0015] Preferably, a second sliding groove is formed on the upper surface of the base, and a slider is connected to the lower end of the mounting plate, the slider being slidably connected within the second sliding groove.

[0016] Preferably, a spring is connected to the inner side of the U-shaped component, and the other end of the spring is connected to a push plate.

[0017] Preferably, the lower end of the base is connected to a caster wheel.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the side wall door size accuracy adjustment device of this vehicle body is configured by setting three sets of bidirectional size accuracy holding components connected to the mounting bracket and mounting plate, so that the three sets of bidirectional size accuracy holding components form a whole, and the three sets of bidirectional size accuracy holding components have six clamping points to fix the wall door, so that the wall door will not deform and affect the accuracy during welding. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a front view of the vehicle body side wall door size accuracy adjustment device of this utility model;

[0021] Figure 2 This is a top view of the vehicle body side wall door size accuracy adjustment device of this utility model;

[0022] Figure 3 This is a side view of the vehicle body side wall door size accuracy adjustment device of this utility model;

[0023] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0024] Figure 5 for Figure 1 Enlarged view of section B in the middle.

[0025] In the diagram: 1. Base; 2. Mounting bracket; 3. Mounting plate; 4. First screw; 5. Sleeve; 6. Threaded adjusting sleeve; 7. U-shaped part; 8. Second screw; 9. Clamping part; 10. Spring; 11. Push plate; 12. Limiting slide groove; 13. Limiting slide bar; 14. First slide groove; 15. Sliding part; 16. Second slide groove; 17. Sliding block; 18. Moving wheel. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 A device for adjusting the dimensional accuracy of a vehicle side wall door includes a base 1, a mounting bracket 2 slidably connected to the base 1, a mounting plate 3 connected to the inner middle of the mounting bracket 2, and three sets of bidirectional dimensional accuracy maintaining components connected to the mounting plate 3, with the ends of the bidirectional dimensional accuracy maintaining components extending to the outer side of the mounting bracket 2.

[0028] Specifically, the bidirectional dimensional accuracy maintaining assembly includes two first screws 4, which are respectively connected to both sides of the mounting plate 3. Each first screw 4 is fitted with a sleeve 5, one end of which extends through to the outside of the mounting bracket 2 and is connected to the wall door clamping assembly. A threaded adjusting sleeve 6 is connected to the first screw 4.

[0029] Specifically, the wall door clamping assembly includes a U-shaped component 7, the back of which is connected to the sleeve 5. Threaded holes are opened on both sides of the U-shaped component 7, and a second screw 8 is connected to each side. A clamping component 9 is connected to the inner end of each second screw 8. A spring 10 is connected to the inner side of the U-shaped component 7, and the other end of the spring 10 is connected to a push plate 11.

[0030] Specifically, by rotating the threaded adjusting sleeve 6, the sleeve 5 can be pushed to move and extend. After the sleeve 5 moves and extends, the wall door clamping assembly moves to the appropriate position. Then, the second screw 8 is rotated to push the clamping member 9, so that the two clamping members 9 clamp and fix the wall door.

[0031] Specifically, a limiting slide groove 12 is connected to the side wall of the mounting bracket 2, and multiple limiting slide bars 13 are connected to the outer wall of the sleeve 5. The multiple limiting slide bars 13 are slidably connected to the limiting slide groove 12. This limits the movement of the sleeve 5, so that the sleeve 5 can only move radially in the first screw 4.

[0032] Specifically, the base 1 has first sliding grooves 14 on both sides, and the lower end of the mounting bracket 2 is connected to a slider 15, which is slidably connected within the first sliding grooves 14. The upper surface of the base 1 has a second sliding groove 16, and the lower end of the mounting plate 3 is connected to a slider 17, which is slidably connected within the second sliding groove 16. This allows the mounting bracket 2 to be easily moved to a suitable position.

[0033] Specifically, the lower end of the base 1 is connected to a caster wheel 18 for easy movement.

[0034] In use, the device is pushed to a suitable position inside the wall door by the moving wheel 18. The threaded adjusting sleeve 6 is rotated to push the sleeve 5 to move and extend. The movement and extension of the sleeve 5 causes the wall door clamping assembly to move, so that the side wall of the wall door is located inside the U-shaped part 7. The second screw 8 is rotated to push the clamping part 9, so that the two clamping parts 9 clamp and fix the wall door, and the wall door can be welded. This device sets three sets of bidirectional dimensional accuracy keeping components, all connected to the mounting frame 2 and the mounting plate 3, so that the three sets of bidirectional dimensional accuracy keeping components form a whole. The three sets of bidirectional dimensional accuracy keeping components have six clamping points to fix the wall door at the same time, so that the wall door will not deform during welding and affect the accuracy.

[0035] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for adjusting the dimensional accuracy of a vehicle body side wall doorway, characterized in that, Includes a base (1), on which a mounting bracket (2) is slidably connected, and a mounting plate (3) is connected to the inner middle of the mounting bracket (2). Three sets of bidirectional dimensional accuracy maintaining components are connected to the mounting plate (3), and the ends of the bidirectional dimensional accuracy maintaining components extend to the outer side of the mounting bracket (2).

2. The vehicle body side wall door size accuracy adjustment device according to claim 1, characterized in that, The bidirectional dimensional accuracy maintaining assembly includes two first screws (4), which are respectively connected to both sides of the mounting plate (3). A sleeve (5) is fitted on each first screw (4), and one end of the sleeve (5) extends through to the outside of the mounting bracket (2) and is connected to the wall door clamping assembly. A threaded adjusting sleeve (6) is connected to the first screw (4).

3. The vehicle body side wall door size accuracy adjustment device according to claim 2, characterized in that, The wall door clamping assembly includes a U-shaped part (7), the back of which is connected to the sleeve (5). Threaded holes are opened on both sides of the U-shaped part (7) and each is connected to a second screw (8). A clamping part (9) is connected to the inner end of each second screw (8).

4. The vehicle body side wall door size accuracy adjustment device according to claim 2, characterized in that, The mounting bracket (2) is connected to a limiting slide groove (12) on its side wall, and the outer wall of the sleeve (5) is connected to multiple limiting slide bars (13), which are slidably connected to the limiting slide groove (12).

5. The vehicle body side wall door size accuracy adjustment device according to claim 1, characterized in that, The base (1) is provided with first sliding grooves (14) on both sides, and the lower end of the mounting bracket (2) is connected to a sliding member (15) and slidably connected in the first sliding groove (14).

6. The vehicle body side wall door size accuracy adjustment device according to claim 1, characterized in that, The upper surface of the base (1) has a second groove (16), and the lower end of the mounting plate (3) is connected to a slider (17), which is slidably connected in the second groove (16).

7. The vehicle body side wall door size accuracy adjustment device according to claim 3, characterized in that, The inner side of the U-shaped part (7) is connected to a spring (10), and the other end of the spring (10) is connected to a push plate (11).

8. The vehicle body side wall door size accuracy adjustment device according to claim 1, characterized in that, The lower end of the base (1) is connected to a movable wheel (18).

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