Adjusting and repairing auxiliary device

Abstract

The utility model discloses an adjusting and repairing auxiliary device which comprises a cross beam and L-shaped supports, the left side and the right side of the cross beam are each provided with one L-shaped support, the two L-shaped supports are connected with the two ends of a car roof to be adjusted and repaired in a clamped mode, and the clamping connection positions of the two L-shaped supports and the two ends of the car roof to be adjusted and repaired are each provided with a first cushion block. A reinforcing beam is arranged on the upper end face of the cross beam and can increase the strength of the cross beam, a pedal pump is arranged between the lower end face of the cross beam and the car roof to be adjusted and repaired, a second cushion block is arranged between the pedal pump and the car roof to be adjusted and repaired, after the radian of the car roof is adjusted to the needed standard through the height of the pedal pump, adjusting and repairing are conducted, and at the moment, under the action of force, the height of the car roof is adjusted. The adjusting efficiency is greatly improved, the adjusting amount is greatly reduced, and the welding seam strength is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical engineering, and particularly relates to an adjustment and repair auxiliary device. Background Art

[0002] Aluminum alloy car bodies have the advantages of light weight, corrosion resistance, good appearance flatness and easy manufacture of complex and beautiful curved car bodies, and are therefore welcomed by urban transportation companies and railway transportation departments around the world.

[0003] The roof of the aluminum alloy subway type B car is composed of 5 long and large profiles with curvature. After assembly, the overall shape is an R7000 arc. The process requirements have high requirements for the curvature after welding. The welding process is a process of local uneven heating and cooling. Due to the existence of uneven temperature field, thermal stress will be generated in the components, thereby generating residual plastic deformation and residual stress, causing deformation of the curvature of the roof. At present, the overall curvature after welding is in a state of high convexity of the front arc top, which cannot meet the process requirements; the weld is the area where stress is concentrated during the welding process. To meet the standard curvature requirements, it is necessary to flame correct the welds in the out-of-tolerance position, and by making the curvature of the roof produce shrinkage deformation in the opposite direction of the deformation, the original deformation is offset to achieve the correction of the curvature. However, too many flame corrections will directly affect the fatigue life of the weld, which may cause defects such as weld cracks and affect the strength of the weld; at this time, mechanical correction should be selected to assist flame correction to reduce the heat input of flame correction. Since the roof itself has a curvature, general tooling cannot apply mechanical force to the arc top. Utility Model Content

[0004] The technical problem to be solved by the utility model is that in the prior art, too many times of flame correction will directly affect the fatigue life of the weld, cause defects such as weld cracks, and affect the strength of the weld.

[0005] In order to solve the above technical problems, a technical solution provided by the utility model is:

[0006] A repair auxiliary device comprises a cross beam and an L-shaped bracket, wherein one L-shaped bracket is arranged on both sides of the left and right sides of the cross beam, the two L-shaped brackets are clamped with the two ends of a roof to be adjusted, and a first cushion block is respectively arranged at the clamping positions of the two L-shaped brackets and the two ends of the roof to be adjusted, a reinforcing beam is arranged on the upper end surface of the cross beam, the reinforcing beam can increase the strength of the cross beam, a foot pump is arranged between the lower end surface and the roof to be adjusted, and the foot pump can move back and forth on the upper end surface of the roof to facilitate its movement to the weld to be adjusted.

[0007] The L-shaped bracket includes a sleeve, a first support rod and a second support rod. A through hole is arranged in the left and right directions of the sleeve, the first support rod is arranged on the lower end surface of the sleeve, the second support rod is arranged on the lower side surface of the first support rod, the second support rod is connected to the first support rod in an L shape, and the first pad is arranged on the upper end surface of the second support rod.

[0008] Furthermore, the inner diameter of the through hole is not less than the outer diameter of the crossbeam, and the two ends of the crossbeam are respectively inserted into the through holes on the two sleeves.

[0009] Furthermore, the first cushion block is an aluminum block, and the upper end surface of the first cushion block fits with the inner contours of both ends of the roof to be adjusted.

[0010] Furthermore, a second pad is provided between the foot pump and the roof to be adjusted. The second pad is a square aluminum block or a nylon block. On the one hand, the second pad can increase the height of the foot pump so that the force of the foot pump can more easily act on the beam and the weld. On the other hand, it can also prevent marks from being pressed on the roof.

[0011] After using the foot pump to adjust the curvature of the roof to the required standard, make adjustments. At this time, under the action of force, the adjustment efficiency will be greatly improved, the amount of adjustment will be greatly reduced, and the strength of the weld will be guaranteed.

[0012] The device mainly controls the height and width of the entire device according to the roof chord height and width, so that the device can be installed and used according to the outer contour of the roof, thus achieving the effect of auxiliary adjustment.

[0013] The height of the device is mainly determined by the L-shaped brackets on both sides, and the height of the L brackets can be controlled according to the roof chord height design.

[0014] The beneficial effects of the utility model are:

[0015] The device has a simple structure. After assembling the L-shaped bracket and the crossbeam, the weld can be stressed by supporting it with a foot pump. It is easy to use, better guarantees the efficiency of large component adjustment and repair, completes the adjustment and repair more efficiently, meets the needs of production and use, ensures the quality of the weld, and improves the fatigue resistance of the weld.

[0016] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only two of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the structure of the device (the foot pump is not shown);

[0019] Figure 2 for Figure 1 Left view of

[0020] Figure 3 for Figure 1 Schematic diagram of the structure of the middle L-shaped bracket;

[0021] Figure 4 It is a structural schematic diagram of an embodiment;

[0022] Figure 5 It is a profile sample diagram in the embodiment.

[0023] In the figure, 1-cross beam, 2-L-shaped bracket, 2-1-sleeve, 2-2-first support rod, 2-3-second support rod, 3-first cushion block, 4-reinforcement beam, 5-foot pump, 6-second cushion block, 7-roof. DETAILED DESCRIPTION

[0024] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0025] In the present utility model, unless otherwise clearly stipulated and limited, terms such as "installation", "setting", "connection", "fixation", and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0026] The names of the messages or information exchanged between multiple devices in the implementation manner of the present invention are only used for illustrative purposes, and are not used to limit the scope of these messages or information.

[0027] Example: Figure 1-5 A maintenance auxiliary device includes a crossbeam 1 and an L-shaped bracket 2. An L-shaped bracket 2 is arranged on the left and right sides of the crossbeam 1. The L-shaped bracket 2 includes a sleeve 2-1, a first support rod 2-2 and a second support rod 2-3. The sleeve 2-1 is provided with through holes in the left and right directions. The first support rod 2-2 is arranged on the lower end surface of the sleeve 2-1. The second support rod 2-3 is arranged on the lower side of the first support rod 2-2. The second support rod 2-3 is connected to the first support rod 2-2 in an L shape.

[0028] The inner diameter of the through hole matches the outer diameter of the cross beam 1 , and the two ends of the cross beam 1 are respectively inserted into the through holes on the two sleeves 2 - 1 .

[0029] A first aluminum cushion block 3 is arranged on the upper end surface of the second support rod 2 - 3 , and the upper end surface of the first cushion block 3 fits with the inner contours of both ends of the roof 7 to be adjusted.

[0030] A reinforcing beam 4 is arranged on the upper end surface of the cross beam 1, and the reinforcing beam 4 can increase the strength of the cross beam 1. A foot pump 5 is arranged between the lower end surface of the cross beam 1 and the roof 7 to be adjusted, and the foot pump 5 is arranged at the weld on the roof 7 to be adjusted.

[0031] A second pad 6 is provided between the foot pump 5 and the roof 7 to be adjusted. The second pad 6 is a nylon block. On the one hand, the second pad 6 can increase the height of the foot pump 5 so that the force of the foot pump 5 can act more easily on the beam 1 and the weld. On the other hand, it can also prevent the roof 7 from being pressed out.

[0032] The length of the cross beam 1 matches the width of the roof 7 , and the height of the L-shaped bracket matches the height of the chord height of the roof 7 .

[0033] After the curvature of the roof 7 is adjusted to the required standard by using the foot pump 5, the adjustment is performed. At this time, under the action of force, the adjustment efficiency is greatly improved, the adjustment amount is greatly reduced, and the strength of the weld is guaranteed.

[0034] The process of using the overall technical solution formed by the above embodiments is as follows: insert the two ends of the crossbeam 1 into the through holes on the sleeves 2-1 on the two L-shaped brackets 2 respectively, and then place the second support frames on the two L-shaped brackets 2 under the two sides of the roof 7 to be adjusted. The two second support frames are respectively provided with a first cushion block 3 at the contact points with the two sides of the roof 7 to be adjusted. The upper end surface of the first cushion block 3 fits the internal contours of the two sides of the roof 7 to be adjusted. Place the foot pump 5 on the roof 7 under the crossbeam 1, and place a nylon block between the foot pump 5 and the roof 7. The top of the foot pump 5 will support the crossbeam 1, raise the foot pump 5, raise the crossbeam 1, and drive the L-shaped bracket 2, so that the first cushion block 3 on the second support frame is just in contact with the two sides of the roof 7 to be adjusted. At this time, The overall device is installed on the roof 7, and then the contour template is used to monitor the curvature of the roof 7 here. The curvature of the lower end surface of the contour template is the standard curvature of the roof. The lifting amount of the foot pump 5 is increased according to the monitoring degree of the contour template. Under the action of the reaction force, the roof 7 will produce a contraction deformation in the opposite direction to the original deformation to offset the original deformation and realize the correction of the curvature. At this time, it is a mechanical correction. After the curvature is corrected to the standard, the contour template is removed and the weld is adjusted by flame welding. At this time, under the action of force, the adjustment efficiency will be greatly improved, the adjustment amount will be greatly reduced, the heat input of flame correction will be reduced, the fatigue resistance of the weld will be improved, the weld cracks will be avoided, the weld strength will be improved, the quality of the weld after adjustment will be guaranteed as much as possible, and the curvature will meet the process requirements to ensure production efficiency.

[0035] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments 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 maintenance auxiliary device, comprising a crossbeam and an L-shaped bracket, characterized in that: An L-shaped bracket is arranged on both sides of the left and right sides of the cross beam, and the two L-shaped brackets are clamped with the two ends of the roof to be adjusted. A first cushion block is respectively arranged at the clamping points of the two L-shaped brackets with the two ends of the roof to be adjusted. A reinforcing beam is arranged on the upper end surface of the cross beam, and a foot pump is arranged between the lower end surface and the roof to be adjusted.

2. The repair auxiliary device according to claim 1, characterized in that: The L-shaped bracket includes a sleeve, a first support rod and a second support rod. A through hole is arranged in the left and right directions of the sleeve, the first support rod is arranged on the lower end surface of the sleeve, the second support rod is arranged on the lower side surface of the first support rod, the second support rod is connected to the first support rod in an L shape, and the first pad is arranged on the upper end surface of the second support rod.

3. The repair auxiliary device according to claim 2, characterized in that: The inner diameter of the through hole is not less than the outer diameter of the cross beam, and the two ends of the cross beam are respectively inserted into the through holes on the two sleeves.

4. The repair auxiliary device according to claim 3, characterized in that: A second cushion block is arranged between the foot pump and the vehicle roof to be adjusted.

5. A repair auxiliary device according to claim 2 or 4, characterized in that: The upper end surface of the first cushion block fits with the inner contours of both ends of the roof to be adjusted.

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