Railway wagon flat floor bar welding anti-deformation device

Abstract

The utility model relates to railway truck flat plate floor rib welding anti -deformation device technical field, especially a railway truck flat plate floor rib welding anti -deformation device, including base, pressure mechanism and positioning mechanism, the base is used for the support railway truck flat plate of waiting to weld, and the top is provided with pressure mechanism and positioning mechanism, the pressure mechanism is used for placing the railway truck flat plate and the rib that it is laid on the base to the downward pressure force of compacting in the welding process, the positioning mechanism is used for the position of rib relative to railway truck flat plate before welding accurate positioning. Solve the rib heat deformation of existing welding process, the problem of low positioning accuracy and insufficient pressure cover, control deformation amount is less than 1mm / m, improve positioning accuracy, save the time of changing type and regulating machine, improve the operation safety and avoid the pressure injury of workpiece surface.

Description

Technical Field

[0001] This utility model relates to the technical field of anti-deformation device for welding the reinforcing bars of railway freight car flatbeds, and in particular to an anti-deformation device for welding the reinforcing bars of railway freight car flatbeds. Background Technology

[0002] Railway freight cars are open wagons used in railway transportation to carry goods, primarily transporting bulk commodities such as coal, ore, and steel. Their main structure is steel, offering advantages such as high load-bearing capacity, low cost, and long-distance transport. The flatbed floor of railway freight cars requires the welding of multiple longitudinal or transverse stiffeners to enhance load-bearing rigidity. Traditional welding processes often result in excessive deformation due to the following issues: 1. Uncontrollable thermal deformation: The high temperature during welding causes uneven thermal expansion between the ribs and the flat plate, which results in wavy deformation after cooling (the measured deformation reaches 3-8 mm / m), affecting the flatness of the floor.

[0003] 2. Low positioning accuracy: The positional deviation of the ribs when placed manually is greater than ±2mm, requiring repeated corrections, which is inefficient.

[0004] 3. Insufficient clamping force: Existing simple clamps only provide localized compression, and the heat-affected zone of the weld will still warp (commonly seen in the middle of ribs with a length >5m). Utility Model Content

[0005] In order to overcome the existing shortcomings, this utility model provides a device for preventing deformation of the welding of the stiffeners of the flatbed floor of railway freight cars.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a deformation-preventing device for welding the floor ribs of a railway freight car flatbed, comprising a base, a clamping mechanism, and a positioning mechanism; the base is used to support the railway freight car flatbed to be welded, and the clamping mechanism and the positioning mechanism are arranged on top of it; the clamping mechanism is used to apply a downward clamping force to the railway freight car flatbed placed on the base and the ribs laid on it during the welding process; the positioning mechanism is used to accurately position the ribs relative to the railway freight car flatbed before welding; wherein, the clamping mechanism comprises: a bracket, a driving element, and a pressure block, the bracket being movably mounted on the base; the driving element being mounted on the bracket; the pressure block being connected to the output end of the driving element, and the driving element driving the pressure block to move in the vertical direction to apply clamping force to the railway freight car flatbed or the ribs or to release the clamping force.

[0007] According to another embodiment of the present invention, the pressure block is further provided with a buffer layer on its pressing contact surface, the buffer layer being a copper plate or an asbestos layer; and the pressure block is provided with heat dissipation holes or heat dissipation grooves.

[0008] According to another embodiment of the present invention, the positioning mechanism further includes a longitudinal positioning block arranged along the rib laying direction or a transverse limiting block arranged perpendicular to the rib laying direction. The position of the longitudinal positioning block or the transverse limiting block is adjustable on the base to adapt to the positioning requirements of ribs of different sizes.

[0009] According to another embodiment of the present invention, the base is further provided with a guide rail, and the bracket of the pressing mechanism is slidably mounted on the guide rail to adjust the horizontal position of the pressing mechanism on the base.

[0010] According to another embodiment of the present invention, the base is further provided with a movable bracket at its bottom, and the movable bracket is provided with rollers at its bottom.

[0011] According to another embodiment of the present invention, it is further characterized in that the longitudinal positioning block and the transverse limiting block of the positioning mechanism are distributed in the edge area of ​​the working surface of the base; the pressing block of the pressing mechanism is located directly above the area between the longitudinal positioning blocks, and the vertical projection of the pressing block does not overlap with the positioning block.

[0012] According to another embodiment of the present invention, the height of the longitudinal positioning block is lower than the thickness of the rib, so that the pressing block only contacts the upper surface of the rib when it is pressed down.

[0013] The beneficial effects of this utility model are as follows: the design of the pressure block covering the main body of the rib and the heat dissipation through holes solves the problem of welding thermal deformation and controls the deformation amount to be less than 1mm / m; the adjustable longitudinal and transverse positioning blocks solve the problem of rib positioning deviation and improve positioning accuracy; the rail-moving pressing mechanism, together with the adjustable positioning block, solves the problem of poor equipment versatility and saves the time for changeover and machine adjustment; the pressure block buffer layer improves operational safety and avoids damaging the workpiece surface; the movable bracket with rollers on the base can be quickly connected to the production line station. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is the front view of the clamping mechanism; Figure 3 This is a cross-sectional view of the briquette.

[0016] In the figure, 1 is the base, 11 is the guide rail, 12 is the movable bracket, 2 is the clamping mechanism, 21 is the bracket, 22 is the driving element, 23 is the pressure block, 231 is the heat dissipation hole, 232 is the heat dissipation groove, 24 is the buffer layer, 3 is the positioning mechanism, 31 is the longitudinal positioning block, and 32 is the lateral limiting block. Detailed Implementation

[0017] like Figure 1 This is a schematic diagram of the structure of this utility model, a device for preventing deformation during welding of ribs on a railway freight car flatbed, including a base 1, a clamping mechanism 2, and a positioning mechanism 3. The base 1 supports the railway freight car flatbed to be welded, and the clamping mechanism 2 and the positioning mechanism 3 are arranged on top of it. The clamping mechanism 2 applies a downward clamping force to the railway freight car flatbed placed on the base 1 and the ribs laid on it during the welding process. The positioning mechanism 3 is used to accurately position the ribs relative to the railway freight car flatbed before welding. The clamping mechanism 2 includes a bracket 21, a driving element 22, and a pressure block 23. The bracket 21 is movably mounted on the base 1. The driving element 22 is mounted on the bracket 21. The pressure block 23 is connected to the output end of the driving element 22, and the driving element 22 drives the pressure block 23 to move vertically to apply or release the clamping force to the railway freight car flatbed or the ribs.

[0018] Specifically, the positioning mechanism 3 acts preferentially on the clamping mechanism 2: before welding, the positioning mechanism 3 must first fix the precise position of the rib, and then the clamping mechanism 2 applies vertical clamping force to prevent the rib from shifting during the clamping process. The positioning mechanism 3 is located at the edge of the working surface of the base 1: it is used to limit the end or lateral position of the rib (e.g., longitudinal stops at both ends of the rib length direction, and lateral limiting blocks on both sides of the rib width). The clamping mechanism 2 covers the main body area of ​​the rib: its clamping block 23 acts on the middle area of ​​the rib length direction or directly above the welding heat-affected zone, directly suppressing welding thermal deformation. The height of the positioning stop is lower than the thickness of the rib, ensuring that the clamping block 23 only contacts the rib and does not interfere with the positioning mechanism when it is pressed down. The projected area of ​​the clamping block 23 does not overlap with the positioning stop to avoid mechanism conflict.

[0019] According to another embodiment of the present invention, the pressure block 23 is further provided with a buffer layer 24 on its pressing contact surface, the buffer layer 24 being a copper plate or an asbestos layer; and the pressure block 23 is provided with a heat dissipation through hole 231 or a heat dissipation through groove 232.

[0020] According to another embodiment of the present invention, the positioning mechanism 3 further includes a longitudinal positioning block 31 arranged along the rib laying direction or a transverse limiting block 32 arranged perpendicular to the rib laying direction. The position of the longitudinal positioning block 31 or the transverse limiting block 32 is adjustable on the base 1 to adapt to the positioning requirements of ribs of different sizes.

[0021] According to another embodiment of the present invention, the base 1 is further provided with a guide rail 11, and the bracket 21 of the pressing mechanism 2 is slidably mounted on the guide rail 11 to adjust the horizontal position of the pressing mechanism 2 on the base 1.

[0022] According to another embodiment of the present invention, the base 1 is further provided with a movable support 12 at its bottom, and the movable support 12 is provided with rollers at its bottom.

[0023] According to another embodiment of the present invention, the longitudinal positioning block 31 and the transverse limiting block 32 of the positioning mechanism 3 are distributed in the edge area of ​​the working surface of the base 1; the pressing block 23 of the pressing mechanism 2 is located directly above the area between the longitudinal positioning blocks 31, and the vertical projection of the pressing block 23 does not overlap with the positioning block 31.

[0024] According to another embodiment of the present invention, the height of the longitudinal positioning block 31 is lower than the thickness of the rib, so that the pressing block 23 only contacts the upper surface of the rib when it is pressed down.

[0025] The specific operation process is as follows: The device is pushed into the welding station via the movable bracket 12, and the rollers are locked. According to the specifications of the rib 200, the positioning mechanism 3 is adjusted: the longitudinal positioning block 31 is slid until the spacing = L + 0.5 mm; the transverse limiting block 32 is adjusted to the desired spacing. The railway freight car flatbed 100 is placed on the rigid plane of the base 1; the rib 200 is pressed tightly against the longitudinal positioning block 31 and the transverse limiting block 32 to achieve precise positioning. The clamping mechanism 2 is moved along the guide rail 11 so that the center of the clamping block 23 is aligned with the weld area of ​​the rib 200; the drive element 22 is activated, and the clamping block 23 is pressed down to contact the upper surface of the rib 200; the buffer layer 24 protects the rib surface; the clamping force is maintained at 8-12 MPa. Automatic welding is performed, and the welding heat dissipates through the heat dissipation holes 231 of the clamping block 23; the clamping force continuously suppresses thermal expansion deformation until the weld cools to room temperature. The drive element 22 lifts the clamping block 23; the welded flatbed-rib assembly is removed, and the next cycle begins.

[0026] The above description is illustrative only and not restrictive of this utility model. Those skilled in the art will understand that many modifications, variations or equivalents can be made without departing from the spirit and scope defined by the appended claims, and all such modifications, variations or equivalents will fall within the protection scope of this utility model.

Claims

1. A deformation-resistant device for welding the reinforcing bars of a railway freight car flatbed, characterized in that, The system includes a base (1), a clamping mechanism (2), and a positioning mechanism (3). The base (1) is used to support the railway freight car flatbed to be welded, and the clamping mechanism (2) and the positioning mechanism (3) are provided on top of it. The clamping mechanism (2) is used to apply a downward clamping force to the railway freight car flatbed placed on the base (1) and the reinforcing bars laid on it during the welding process. The positioning mechanism (3) is used to accurately position the reinforcing bars relative to the railway freight car flatbed before welding. The clamping mechanism (2) includes a bracket (21), a driving element (22), and a pressure block (23). The bracket (21) is movably installed on the base (1). The driving element (22) is installed on the bracket (21). The pressure block (23) is connected to the output end of the driving element (22). The driving element (22) drives the pressure block (23) to move in the vertical direction to apply a clamping force to the railway freight car flatbed or the reinforcing bars or to release the clamping force.

2. The anti-deformation device for welding the reinforcing bars of railway freight car flatbeds according to claim 1, characterized in that, The pressure block (23) has a buffer layer (24) on its pressing contact surface. The buffer layer (24) is a copper plate or an asbestos layer. The pressure block (23) has a heat dissipation through hole (231) or a heat dissipation through groove (232).

3. The anti-deformation device for welding the reinforcing bars of railway freight car flatbeds according to claim 1, characterized in that, The positioning mechanism (3) includes a longitudinal positioning block (31) arranged along the rib laying direction or a transverse limiting block (32) arranged perpendicular to the rib laying direction. The position of the longitudinal positioning block (31) or the transverse limiting block (32) is adjustable on the base (1) to adapt to the positioning requirements of ribs of different sizes.

4. The anti-deformation device for welding the reinforcing bars of railway freight car flatbeds according to claim 1, characterized in that, The base (1) is provided with a guide rail (11), and the bracket (21) of the pressing mechanism (2) is slidably mounted on the guide rail (11) to adjust the horizontal position of the pressing mechanism (2) on the base (1).

5. The anti-deformation device for welding the reinforcing bars of railway freight car flatbeds according to claim 1, characterized in that, The base (1) is provided with a movable bracket (12) at the bottom, and the movable bracket (12) is provided with rollers at the bottom.

6. The anti-deformation device for welding the reinforcing bars of railway freight car flatbeds according to claim 1 or 3, characterized in that, The longitudinal positioning block (31) and the transverse limiting block (32) of the positioning mechanism (3) are distributed in the edge area of ​​the working surface of the base (1); the pressing block (23) of the pressing mechanism (2) is located directly above the area between the longitudinal positioning blocks (31), and the vertical projection of the pressing block (23) does not overlap with the positioning block (31).

7. The anti-deformation device for welding the reinforcing bars of railway freight car flatbeds according to claim 3, characterized in that, The height of the longitudinal positioning block (31) is lower than the thickness of the rib, so that the pressure block (23) only contacts the upper surface of the rib when it is pressed down.

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