Middle roof plate welding auxiliary platform device

Abstract

The utility model relates to the technical field of rail transit vehicle manufacturing, and discloses a middle roof plate welding auxiliary platform device which comprises a first bottom frame and a second bottom frame, the inner side of the first bottom frame is rotatably connected with a supporting and positioning mechanism, the inner side of the second bottom frame is slidably connected with an opening and closing adjusting mechanism, and the supporting and positioning mechanism comprises a two-way threaded rod. A sliding groove is formed in the inner side of the first bottom frame, the outer side of the two-way threaded rod is rotationally connected to the inner side of the first bottom frame, and the outer side of the two-way threaded rod is in threaded connection with a sliding block. By means of the supporting and positioning mechanism, all-directional positioning of the top plate to be welded can be completed, deflection and deviation caused by inaccurate positioning of the top plate to be welded are effectively prevented, operation is easy, labor intensity can be reduced, efficiency can be improved, the size of the supporting table and the size of the bottom frame can be effectively adjusted through the opening and closing adjusting mechanism, and the applicability of the device is enhanced; and the device can adapt to various middle top plates of different models.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail transit vehicle manufacturing technical field especially relates to a middle roof plate welding auxiliary platform device. BACKGROUND

[0002] The middle roof plate in rail transit vehicle is a vital plate component from the inside top middle position, plays a key role in the field of rail transit, and is mainly applied to the inside of carriages of subway trains, light rail trains and tramcars. From the perspective of aesthetics, the middle roof plate shapes a flat top space, makes the overall visual effect of the inside of the carriage more harmonious and unified, and improves the aesthetics of the carriage. In terms of comfort, the middle roof plate has good sound insulation and heat insulation performance. It can effectively block the noisy noises from the outside, such as rail friction sound and vehicle driving wind sound, into the carriage, and create a quiet riding environment for passengers. Meanwhile, it can insulate external heat, make the temperature in the carriage more stable, and improve the riding comfort. In addition, the middle roof plate can also ingeniously hide the electrical lines, ventilation ducts and other facilities in the carriage, avoid the exposure of these facilities, play a protection and shielding role, make the inside layout of the carriage more neat and orderly, and also facilitate daily maintenance and repair.

[0003] Most of the middle roof plates in rail transit vehicles are welded. When welding, the following steps are needed. First, the welding preparation is carried out, including checking the middle roof plate material and welding equipment, adjusting the welding current, voltage and other parameters, hoisting the middle roof plate to the installation position and preliminarily assembling it with the related structure of the vehicle body, using positioning tooling or positioning pins to ensure the accurate position, temporarily fixing it with a clamp, cleaning the oil stains, rust and other impurities on the middle roof plate to be welded and around, and protecting the positions that do not need to be welded or are easily affected by splashing. Then, the welding operation is carried out. First, the tungsten argon arc welding is used for backing welding. The welding torch angle and speed are kept uniform from the beginning of the welding seam, and the root of the welding seam is fully fused. Then, according to the thickness and width requirements of the welding seam, the methods such as gas shielded welding with filler metal are used for filling welding and cap welding, and the welding sequence and parameters are operated according to the predetermined sequence and parameters.

[0004] The vehicle body of rail transit vehicle includes a chassis, end walls, side walls, a roof, windows, doors, a through passage and in-vehicle facilities, and the roof structure includes roof bending beams, roof cross beams, roof end bending beams and roof plates. In order to meet the needs of safely carrying passengers and improve the riding comfort, the roof structure must have sufficient strength and rigidity to ensure the self-vibration frequency of the vehicle body. Among them, the middle roof plate bears a large load, so it is extremely important. In the processing of the middle roof plate, welding is a necessary process. However, the existing welding platform is inconvenient to adjust the height, and the position in the horizontal direction cannot be adjusted, which leads to the fact that the related auxiliary tooling cannot be reasonably matched in height and installed, the positioning of the middle roof plate is not accurate, the welding process is low in efficiency, and the welding effect is poor. Therefore, a middle roof plate welding auxiliary platform device is proposed to solve the above problems. Utility model content

[0005] In view of the above, in order to overcome the defects of the prior art, the utility model provides a middle roof welding auxiliary platform device, aims at improving the problem of poor welding effect caused by inaccurate positioning in the prior art.

[0006] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: a middle roof welding auxiliary platform device, including chassis one, chassis two, the inner side of chassis one is rotatably connected with support positioning mechanism, the inner side of chassis two is slidably connected with opening and closing adjusting mechanism, the support positioning mechanism includes two-way threaded rod, the inner side of chassis one is provided with a sliding slot, the outer side of two-way threaded rod is rotatably connected in the inner side of chassis one, the outer side of two-way threaded rod is threadedly connected with sliding block, the outer side of sliding block is slidably connected in the inner side of the sliding slot of chassis one, the outer side of sliding block is fixedly connected with a rotating shaft, the outer side of the rotating shaft of sliding block is rotatably connected with support connecting rod one, the outer side of sliding block is rotatably connected with support connecting rod two, the middle segment of support connecting rod one is fixedly connected with support rotating shaft, the middle segment of support connecting rod two is rotatably connected in the outer side of support connecting rod two, the top end of support connecting rod one and support connecting rod two is rotatably connected with lateral positioning assembly.

[0007] Preferably, the lateral positioning assembly includes support platform two, the outer side of support platform two is fixedly connected with an extension block, the outer side of the extension block of support platform two is slidably connected with support platform one, the inner side of support platform one and support platform two is slidably connected with positioning push rod, the outer side of positioning push rod is fixedly connected with positioning support plate.

[0008] Preferably, the inner side of support platform one and support platform two is provided with groove, the inner side of the groove of support platform one and support platform two is slidably connected with adjusting pull rod, the outer side of adjusting pull rod is sleeved with reset spring, the outer side of reset spring is fixedly connected in the inner side of the groove of support platform one and support platform two, the outer side of positioning push rod is provided with a plurality of positioning clamping grooves, the outer side of adjusting pull rod is slidably connected in the inner side of positioning clamping groove.

[0009] Preferably, the top end of support connecting rod one and support connecting rod two is fixedly connected with a rotating shaft, the outer side of the rotating shaft of support connecting rod one and support connecting rod two is rotatably connected with T-shaped sliding block, the outer side of T-shaped sliding block is slidably connected with support platform one, the outer side of T-shaped sliding block is slidably connected with support platform two.

[0010] Preferably, the opening and closing adjusting mechanism includes connecting lug, the outer side of connecting lug is fixedly connected at the top of chassis one, the similar side of connecting lug is fixedly connected with adjusting rotating shaft, the outer side of adjusting rotating shaft is rotatably connected with adjusting buckle.

[0011] Preferably, the inner side of the first chassis is provided with a slot, the slot of the first chassis is slidably connected with a connecting block, the outer side of the connecting block is fixedly connected to the outer side of the second chassis, the top of the connecting block is provided with a plurality of adjusting clamping grooves, and the outer side of the adjusting clamping buckle is slidably connected to the inner side of the adjusting clamping groove.

[0012] Preferably, the bottom of the adjusting clamping buckle is fixedly connected with a supporting spring, and the end, away from the adjusting clamping buckle, of the supporting spring is fixedly connected to the top of the first chassis.

[0013] Preferably, the top of the first supporting table and the second supporting table is fixedly connected with a positioning column, and the outer side of the positioning column is slidably connected with a to-be-welded top plate.

[0014] Compared with the prior art, the device has the advantages that: the to-be-welded top plate is placed on the positioning column of the supporting table, so that the horizontal positioning of the device is completed; then the adjusting pull rod is pulled out, so that the locking of the positioning push rod is released; the positioning push rod is pulled apart until the positioning support plate is supported on the two side walls of the carriage, so that the lateral positioning of the device is completed; finally, the device is adjusted to a suitable height by rotating the two-way threaded rod, so that the omnibearing positioning of the to-be-welded top plate is completed, which effectively prevents the skewing and deviation caused by inaccurate positioning of the to-be-welded top plate, and the operation is simple, the labor intensity is reduced, and the efficiency is improved.

[0015] By pressing the adjusting clamping buckle, the fixing of the connecting block is released, so that the width and position of the chassis and the supporting table can be adjusted; after the adjustment is completed, the adjusting clamping buckle is released, and the fixing is completed again; and the opening and closing adjusting mechanism can effectively adjust the size of the supporting table and the chassis, thereby enhancing the applicability of the device, adapting to various types of top plates, improving the working efficiency, expanding the application range of the device, reducing the equipment use cost, and improving the equipment utilization rate. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application together with the embodiments thereof, and explain the present application, but do not constitute a limitation on the present application.

[0017] In the drawings:

[0018] Figure 1 FIG. 1 is a perspective view of a middle top plate welding auxiliary platform device according to the present application;

[0019] Figure 2 FIG. 4 is a structural schematic view of a two-way threaded rod of the middle top plate welding auxiliary platform device according to the present application;

[0020] Figure 3 FIG. 5 is a structural schematic view of a supporting table of the middle top plate welding auxiliary platform device according to the present application;Figure 2 Enlarged view at B;

[0021] Figure 4 For Figure 2 Enlarged view at C;

[0022] Figure 5 For Figure 2 Enlarged view at C.

[0023] Figure 6 It is a structure schematic view of the support table one of the middle roof plate welding auxiliary platform device.

[0024] In the figure: 1, the chassis one; 2, the chassis two; 3, bidirectional threaded rod; 4, sliding block; 5, support connecting rod one; 6, support connecting rod two; 7, support pivot; 8, T-shaped sliding block; 9, support table one; 10, support table two; 11, positioning column; 12, adjusting pull rod; 13, reset spring; 14, positioning push rod; 15, positioning support plate; 16, positioning clamping groove; 17, connecting lug; 18, adjusting pivot; 19, adjusting buckle; 20, support spring; 21, connecting block; 22, adjusting clamping groove; 23, to-be-welded roof plate. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] By Figure 1 , Figure 2 and Figure 6 It is given that the utility model includes chassis one 1, chassis two 2, and the chassis is the basic support structure of the whole auxiliary platform device, and the chassis two 2 cooperates with the chassis one 1, and together constitutes the bottom support system of the platform, is manufactured with high-strength steel, so as to ensure that it has enough strength and stability to bear the weight of the structure above and the to-be-welded middle roof plate, and the inner side of the chassis one 1 is rotationally connected with the support positioning mechanism, and the inner side of the chassis two 2 is slidably connected with the opening and closing adjusting mechanism.

[0027] The support positioning mechanism comprises a bidirectional threaded rod 3, which can drive the two sliding blocks 4 on both sides to move towards or away from each other when the bidirectional threaded rod 3 rotates. The bidirectional threaded rod 3 is manually driven to realize accurate control of the position of the sliding block 4, thereby adjusting the position of the support connecting rod and the height of the platform and other parameters. The inner side of the chassis one 1 is provided with a sliding groove, the outer side of the bidirectional threaded rod 3 is rotatably connected to the inner side of the chassis one 1, and the outer side of the bidirectional threaded rod 3 is threadedly connected with the sliding block 4. The outer side of the sliding block 4 is in sliding fit with the inner side of the sliding groove of the chassis one 1, so that it can only move along the direction of the sliding groove under the drive of the bidirectional threaded rod 3. The sliding block 4 provides multiple rotational degrees of freedom for the movement of the support connecting rod. The position of the sliding block 4 can be moved to adjust the height of the to-be-welded top plate 23. The outer side of the sliding block 4 is slidably connected to the inner side of the sliding groove of the chassis one 1. The outer side of the sliding block 4 is fixedly connected with a rotating shaft. The rotating shaft of the sliding block 4 is rotatably connected with a support connecting rod one 5. The outer side of the sliding block 4 is rotatably connected with a support connecting rod two 6. The two support connecting rods constitute a structure similar to a scissor fork, which is a key component for realizing the height adjustment and support of the platform. The two connecting rods can rotate relative to each other to realize the lifting action of the platform. While adjusting the height of the platform, stable support can be provided for the lateral positioning assembly. The middle segment of the support connecting rod one 5 is fixedly connected with a support rotating shaft 7. The support rotating shaft 7 has sufficient strength and rigidity, so that the two connecting rods can stably rotate relative to each other during the lifting of the platform, and can withstand a large force. The support rotating shaft 7 is made of high-quality alloy steel and is subjected to fine machining and heat treatment, so as to improve its wear resistance and fatigue resistance. The middle segment of the support connecting rod two 6 is rotatably connected to the outer side of the support connecting rod two 6. The top ends of the support connecting rod one 5 and the support connecting rod two 6 are rotatably connected with the lateral positioning assembly.

[0028] By Figures 2 to 5 It is given that the lateral positioning assembly comprises a support table two 10. The outer side of the support table two 10 is fixedly connected with an extension block. The outer side of the extension block of the support table two 10 is slidably connected with a support table one 9. The support table one 9 cooperates with the support table two 10 to adjust the distance according to different models of the middle top plate, realize accurate positioning and support of the middle top plate, and facilitate the installation and welding of the subsequent middle top plate. The inner sides of the support table one 9 and the support table two 10 are slidably connected with a positioning push rod 14. The positioning push rod 14 can be used to push the subsequent components to facilitate the side positioning. The outer side of the positioning push rod 14 is fixedly connected with a positioning support plate 15. The positioning support plate 15 can be supported on the two side walls of the carriage under the pushing of the positioning push rod 14 to realize the lateral positioning of the device, ensure that the middle top plate is kept in line with the axis of the carriage, and prevent the middle top plate from being skewed.

[0029] The inner side of the support table one 9 and the support table two 10 is provided with a groove, the adjusting pull rod 12 is slidably connected in the groove of the support table one 9 and the support table two 10, the positioning push rod 14 can be released by pulling out the adjusting pull rod 12 outward, thus the positioning support plate 15 can be pulled outward to realize lateral positioning, the outer side of the adjusting pull rod 12 is sleeved with the reset spring 13, after completing the lateral positioning of the positioning support plate 15, the adjusting pull rod 12 is released, the reset support force provided by the compressed reset spring 13 makes the adjusting pull rod 12 reset and fix the positioning support plate 15 again, the outer side of the reset spring 13 is fixedly connected to the inner side of the groove of the support table one 9 and the support table two 10, the outer side of the positioning push rod 14 is provided with a plurality of positioning clamping grooves 16, the positioning clamping grooves 16 are matched with the adjusting pull rod 12, when the adjusting pull rod 12 is inserted into the positioning clamping groove 16, the position of the positioning push rod 14 can be fixed, the position of the positioning push rod 14 is flexibly adjusted by adjusting the position of the adjusting pull rod 12 in different clamping grooves, a plurality of welding requirements are adapted, the platform versatility and use convenience are improved, and the outer side of the adjusting pull rod 12 is slidably connected to the inner side of the positioning clamping groove 16.

[0030] The top end of the support connecting rod one 5 and the support connecting rod two 6 is fixedly connected with a rotating shaft, the outer side of the rotating shaft of the support connecting rod one 5 and the support connecting rod two 6 is rotatably connected with the T-shaped sliding block 8, the outer side of the T-shaped sliding block 8 is slidably connected with the support table one 9, and the outer side of the T-shaped sliding block 8 is slidably connected with the support table two 10.

[0031] The opening and closing adjusting mechanism comprises a connecting lug 17, the connecting lug 17 provides stable rotating support for the adjusting rotating shaft 18, the outer side of the connecting lug 17 is fixedly connected to the top of the chassis one 1, the proximal side of the connecting lug 17 is fixedly connected with the adjusting rotating shaft 18, the outer side of the adjusting rotating shaft 18 is rotatably connected with the adjusting buckle 19, the adjusting buckle 19 can realize reliable clamping and unlocking functions, when the adjusting buckle 19 is clamped into the adjusting clamping groove 22, the chassis one 1 and the chassis two 2 are relatively fixed; when it is necessary to adjust the position of the chassis two 2, the adjusting buckle 19 is lifted to make it disengage from the adjusting clamping groove 22, and then the chassis two 2 can be pushed to slide in the inner side of the chassis one 1.

[0032] The inner side of the chassis one 1 is provided with a groove, the connecting block 21 is slidably connected in the groove of the chassis one 1, the connecting block 21 can be used to connect the chassis one 1 and the chassis two 2 to make them into a whole, and the stability of the chassis is improved, the outer side of the connecting block 21 is fixedly connected to the outer side of the chassis two 2, a plurality of adjusting clamping grooves 22 are provided on the top of the connecting block 21, the adjusting clamping groove 22 is matched with the adjusting buckle 19 to realize clamping and fixing of the chassis, and the outer side of the adjusting buckle 19 is slidably connected to the inner side of the adjusting clamping groove 22.

[0033] The bottom of the adjusting buckle 19 is fixedly connected with a supporting spring 20, which provides upward elastic force for the adjusting buckle 19, so that the adjusting buckle 19 can be automatically clamped into the adjusting clamping groove 22 on the top of the connecting block 21 of the second base frame 2 when no external force is applied, thereby ensuring the stable connection of the first base frame 1 and the second base frame 2, maintaining the stability of the platform structure, and ensuring that the platform will not shake during welding to affect the welding quality, and the end of the supporting spring 20 away from the adjusting buckle 19 is fixedly connected to the top of the first base frame 1.

[0034] The top of the supporting table one 9 and the supporting table two 10 is fixedly connected with a positioning column 11, which provides horizontal positioning for the to-be-welded top plate 23 to prevent the to-be-welded top plate 23 from being skewed and deviated, and the outer side of the positioning column 11 is slidably connected with the to-be-welded top plate 23.

[0035] Working principle: first, place the to-be-welded top plate 23 stably on the positioning column 11 on the top of the supporting table one 9 and the supporting table two 10, which can preliminarily limit the position of the to-be-welded top plate 23 in the horizontal direction to prevent it from being skewed and deviated, then adjust the height of the platform. Rotate the two-way threaded rod 3 by manual driving, since the outer side of the two-way threaded rod 3 is threadedly connected with the sliding block 4, and the outer side of the sliding block 4 is slidably connected with the inner side of the sliding groove of the first base frame 1, the rotation of the two-way threaded rod 3 will drive the two sliding blocks 4 to move towards or away from each other in the sliding groove of the first base frame 1, and with the movement of the sliding blocks 4, the supporting link one 5 and the supporting link two 6 connected with the sliding blocks 4 will rotate relative to each other, like the opening and closing of a scissor fork structure, thereby realizing the lifting of the platform, until the to-be-welded top plate 23 is adjusted to the appropriate welding height.

[0036] Then the lateral positioning operation is performed, the adjusting pull rod 12 is pulled out, at this time the adjusting pull rod 12 is disengaged from the positioning clamping groove 16 on the outer side of the positioning push rod 14, thereby releasing the positioning push rod 14. The operator can push the positioning push rod 14, so that the positioning support plate 15 fixedly connected to the outer side of the positioning push rod 14 is supported on the two side walls of the carriage, thereby completing the lateral positioning of the device. After the lateral positioning is completed, the adjusting pull rod 12 is released, and the reset spring 13 sleeved on the outer side of the adjusting pull rod 12 will provide a reset support force, so that the adjusting pull rod 12 is reset and re-clamped into the positioning clamping groove 16, thereby fixing the positioning push rod 14.

[0037] If it is necessary to adjust the position and width of the second base frame 2 to adapt to different types of top plates, the operator lifts the adjusting buckle 19 to disengage it from the adjusting clamping groove 22 on the top of the connecting block 21, at this time, the second base frame 2 can be pushed to slide in the inner side of the first base frame 1. After adjusting the width of the supporting table to the appropriate position, the adjusting buckle 19 is released, and the supporting spring 20 will provide upward elastic force for the adjusting buckle 19 to automatically clamp into the adjusting clamping groove 22, thereby fixing the relative position of the first base frame 1 and the second base frame 2. After completing the supporting and positioning of the to-be-welded top plate 23, welding can be started.

Claims

1. A kind of middle roof welding auxiliary platform device, including chassis one (1), chassis two (2), it is characterized in that: The inner side of the first chassis (1) is rotationally connected with a support positioning mechanism, and the inner side of the second chassis (2) is slidingly connected with an opening and closing adjusting mechanism. The support positioning mechanism comprises a bidirectional threaded rod (3), the inner side of the first chassis (1) is provided with a sliding groove, the outer side of the bidirectional threaded rod (3) is rotationally connected to the inner side of the first chassis (1), the outer side of the bidirectional threaded rod (3) is threadedly connected with a sliding block (4), the outer side of the sliding block (4) is slidingly connected to the inner side of the sliding groove of the first chassis (1), the outer side of the sliding block (4) is fixedly connected with a rotating shaft, the rotating shaft of the sliding block (4) is rotationally connected with a support connecting rod one (5), the outer side of the sliding block (4) is rotationally connected with a support connecting rod two (6), the middle segment of the support connecting rod one (5) is fixedly connected with a support rotating shaft (7), the middle segment of the support connecting rod two (6) is rotationally connected to the outer side of the support connecting rod two (6), and the top ends of the support connecting rod one (5) and the support connecting rod two (6) are rotationally connected with a lateral positioning assembly.

2. A roof welding platform assembly according to claim 1, wherein: The lateral positioning assembly comprises a support table two (10), the outer side of the support table two (10) is fixedly connected with an extension block, the outer side of the extension block of the support table two (10) is slidingly connected with a support table one (9), the inner sides of the support table one (9) and the support table two (10) are slidingly connected with a positioning push rod (14), and the outer side of the positioning push rod (14) is fixedly connected with a positioning support plate (15).

3. A roof welder platform assembly according to claim 2, wherein: The inner sides of the support table one (9) and the support table two (10) are provided with grooves, the inner sides of the grooves of the support table one (9) and the support table two (10) are slidingly connected with an adjusting pull rod (12), the outer side of the adjusting pull rod (12) is sleeved with a reset spring (13), the outer side of the reset spring (13) is fixedly connected to the inner side of the groove of the support table one (9) and the support table two (10), the outer side of the positioning push rod (14) is provided with a plurality of positioning clamping grooves (16), and the outer side of the adjusting pull rod (12) is slidingly connected to the inner side of the positioning clamping groove (16).

4. The roof weld assist platform assembly of claim 1, wherein: The top ends of the support connecting rod one (5) and the support connecting rod two (6) are fixedly connected with a rotating shaft, the outer sides of the rotating shafts of the support connecting rod one (5) and the support connecting rod two (6) are rotationally connected with a T-shaped sliding block (8), the outer side of the T-shaped sliding block (8) is slidingly connected with the support table one (9), and the outer side of the T-shaped sliding block (8) is slidingly connected with the support table two (10).

5. The roof welder assist platform assembly of claim 1, wherein: The opening and closing adjusting mechanism comprises a connecting lug (17), the outer side of the connecting lug (17) is fixedly connected to the top of the first chassis (1), the proximal side of the connecting lug (17) is fixedly connected with an adjusting rotating shaft (18), and the outer side of the adjusting rotating shaft (18) is rotationally connected with an adjusting buckle (19).

6. A roof welder platform assembly according to claim 5 wherein: The inner side of the chassis one (1) is provided with a slot, the slot of the chassis one (1) is slidably connected with a connecting block (21), the outer side of the connecting block (21) is fixedly connected with the outer side of the chassis two (2), the top of the connecting block (21) is provided with a plurality of adjusting clamping grooves (22), the outer side of the adjusting buckle (19) is slidably connected with the inner side of the adjusting clamping groove (22).

7. A roof welder platform assembly as defined in claim 5 wherein: The bottom of the adjusting buckle (19) is fixedly connected with a supporting spring (20), one end of the supporting spring (20) away from the adjusting buckle (19) is fixedly connected with the top of the chassis one (1).

8. The roof weld assist platform assembly of claim 2, wherein: The top of the supporting table one (9) and the supporting table two (10) is fixedly connected with a positioning column (11), the outer side of the positioning column (11) is slidably connected with a to-be-welded top plate (23).

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