Rail low joint hot correction stress relief device

Abstract

The utility model discloses a steel rail low joint hot correction stress relief device, concretely relates to stress relief technical field, including cooling box, the top of cooling box is equipped with the elimination frame, and the inner wall of elimination frame is equipped with positioning elimination subassembly, and positioning elimination subassembly includes: a plurality of positioning grooves, all are established in the inner wall of elimination frame, and the outer wall of elimination frame is equipped with a plurality of flow guide holes, a plurality of positioning pressure plates all are located the top of elimination frame, and positioning pressure plate is used for inserting the inside of positioning groove, linkage strip, fixed connection is located in the upper surface of positioning pressure plate, and the upper surface of linkage strip is fixedly connected with the guide column. The utility model discloses positioning elimination subassembly, has a plurality of positioning pressure plates respectively inserted into the inside of a plurality of positioning grooves in the inside of elimination frame, realizes the cooling stress relief processing of a plurality of hot correction stresses of steel rail low joint in the inside of elimination frame to the positioning operation, and the stress of large -area positioning elimination is eliminated, and the elimination effect is better.

Description

Technical Field

[0001] This utility model relates to the field of stress relief technology, and more specifically, to a thermal straightening stress relief device for low joints of rails. Background Technology

[0002] During the heating and cooling process, thermal expansion and contraction occur inside the rail. By controlling the cooling state, the residual tensile stress is transformed into compressive stress. Cooling promotes stress homogenization and further eliminates residual stress.

[0003] The thermal straightening of rail joints generates significant expansion stress, necessitating the use of cooling equipment to eliminate this stress. However, during the cooling process, the presence of multiple points on the rail joint makes it difficult to perform multi-point stress relief, resulting in poor stability in stress relief. Utility Model Content

[0004] To overcome the aforementioned deficiencies of the prior art, this utility model provides the following technical solution: a thermal straightening stress relief device for low-joint rails, comprising a cooling box, an elimination frame above the cooling box, and a positioning elimination component on the inner wall of the elimination frame, the positioning elimination component comprising: Multiple positioning grooves are formed on the inner wall of the elimination frame, and multiple guide holes are formed on the outer wall of the elimination frame; Multiple positioning plates are located above the elimination frame, and the positioning plates are used to insert into the positioning groove; A linkage bar is fixedly connected to the upper surface of the positioning pressure plate, and a guide post is fixedly connected to the upper surface of the linkage bar; The positioning plate is slidably connected to the outer wall of the guide column, and the positioning plate is fixedly connected to the elimination frame.

[0005] In a preferred embodiment, a plurality of positioning grooves are arranged equidistantly from left to right, and the inner wall of the positioning groove is a smooth surface.

[0006] In a preferred embodiment, a plurality of the guide holes are arranged at equal intervals from front to back, and the vertical cross-sectional shape of the guide holes is rectangular.

[0007] In a preferred embodiment, the lower surface cross-sectional area of ​​the positioning plate is smaller than the top surface cross-sectional area, and the outer wall of the positioning plate is a smooth surface.

[0008] In a preferred embodiment, a positioning sleeve is fixedly connected to the upper surface of the positioning plate, and the positioning sleeve is slidably connected to the guide post. A threaded bolt is embedded on one side of the positioning sleeve, and the bolt is used to press and lock the guide post. A guide rod is located on one side of the positioning sleeve, and the guide rod is slidably connected to the positioning plate. The guide rod is fixedly connected to the linkage bar, and a limit block is fixedly installed at the top of the guide column.

[0009] In a preferred embodiment, one end of the cooling tank is fixedly connected to an inlet pipe, and the other end of the cooling tank is fixedly connected to an outlet pipe.

[0010] In a preferred embodiment, support blocks are fixedly connected to both sides of the positioning plate, and a gripping rod is fixedly installed at one end of each support block.

[0011] The technical effects and advantages of this utility model are as follows: 1. This utility model uses a positioning and stress-eliminating component. The rail joint with thermally corrected stress is placed inside multiple positioning slots. The stress-eliminating frame performs front-to-back and left-to-right positioning operations on the rail joint with thermally corrected stress. The guide column drives the linkage bar to move down, and multiple positioning pressure plates are inserted into multiple positioning slots inside the stress-eliminating frame to perform positioning operations on the upper surface of the rail joint with thermally corrected stress inside the positioning slots. The stress-eliminating frame enters the cooling box, which can perform cooling stress elimination treatment on multiple rail joints with thermally corrected stress inside the stress-eliminating frame, achieving large-area positioning stress elimination and better elimination effect. 2. When the guide post needs to be moved downward, the bolt can be reversed first, and the guide post can be guided downward along the inner wall of the positioning sleeve. At the same time, the limiting block limits the vertical height of the guide post. The linkage bar drives multiple positioning pressure plates to achieve downward movement. The guide rod can stably move downward along the inner wall of the positioning plate and move downward to the designated position according to the specified path. Under the action of the thread meshing force, the left end of the bolt is pressed against the guide post to achieve a firm binding and locking, and the locking is more secure. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the rail low joint thermal straightening stress relief device of this utility model.

[0013] Figure 2 This is a partial structural diagram showing the connection between the positioning plate and the elimination frame of this utility model.

[0014] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0015] Figure 4 This is a partial structural diagram showing the connection between the positioning plate and the support block of this utility model.

[0016] The attached diagram is labeled as follows: 1. Cooling box; 2. Elimination frame; 3. Positioning groove; 4. Positioning pressure plate; 5. Linkage bar; 6. Positioning plate; 7. Guide column; 8. Positioning sleeve; 9. Bolt; 10. Guide rod; 11. Limiting block; 12. Liquid inlet pipe; 13. Liquid outlet pipe; 14. Support block; 15. Holding rod; 16. Flow guide hole. Detailed Implementation

[0017] 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.

[0018] like Figures 1-4 The present invention relates to a rail low joint thermal straightening stress relief device, which is equipped with a positioning and stress relief component. The positioning and stress relief component can achieve cooling stress relief treatment for multiple rail low joints with thermal straightening stress inside the stress relief frame 2, thereby achieving large-area positioning stress relief and better stress relief effect. The specific structural configuration of the positioning and stress relief component is as follows.

[0019] In this embodiment, as Figures 1-3 As shown, a cooling box 1 is provided with an elimination frame 2 above it. The inner wall of the elimination frame 2 is provided with a positioning elimination assembly, which includes: multiple positioning grooves 3, all formed on the inner wall of the elimination frame 2; multiple guide holes 16 formed on the outer wall of the elimination frame 2; multiple positioning pressure plates 4, all located above the elimination frame 2, which are inserted into the positioning grooves 3; a linkage bar 5, fixedly connected to the upper surface of the positioning pressure plate 4, with a guide post 7 fixedly connected to the upper surface of the linkage bar 5; and a positioning plate 6, slidably connected to the outer wall of the guide post 7, which is fixedly connected to the elimination frame 2. The multiple positioning grooves 3 are arranged equidistantly from left to right, and the inner wall of the positioning grooves 3 is a smooth surface. The multiple guide holes 16 are arranged equidistantly from front to back, and the vertical cross-sectional shape of the guide holes 16 is rectangular. The lower surface cross-sectional area of ​​the positioning pressure plate 4 is smaller than the top surface cross-sectional area, and the outer wall of the positioning pressure plate 4 is a smooth surface.

[0020] In this technology, the rail low joint heat straightening stress relief device is used by placing the rail low joint to be heat straightened into multiple positioning slots 3. The stress relief frame 2 positions the rail low joint in the front-to-back and left-to-right directions. Then, the guide post 7 is no longer compressed, causing it to move downwards along the inner wall of the positioning plate 6. Simultaneously, the guide post 7 moves the linkage bar 5 downwards, which in turn moves multiple positioning pressure plates 4 downwards. These positioning pressure plates 4 are then inserted into the multiple positioning slots 3 inside the stress relief frame 2, thus relieving the heat straightening stress within the positioning slots 3. The positioning operation is performed on the upper surface of the rail low joint. Then, the positioning plate 6 is moved downward. The positioning plate 6 drives the elimination frame 2 to move downward. The elimination frame 2 enters the cooling box 1 and coolant enters the cooling box 1 through the liquid inlet pipe 12. The liquid outlet pipe 13 is closed. In this way, the coolant inside the cooling box 1 enters the elimination frame 2 through the guide hole 16. This can cool the multiple rail low joints with heat straightening stress inside the elimination frame 2. After cooling, the elimination frame 2 and the positioning pressure plate 4 can achieve large-area positioning and stress elimination of the rail low joints with heat straightening stress, resulting in a better stress elimination effect.

[0021] In this embodiment, as Figures 2-3 As shown, the positioning sleeve 8 is fixedly connected to the upper surface of the positioning plate 6, and the positioning sleeve 8 is slidably connected to the guide post 7; a threaded bolt 9 is embedded on one side of the positioning sleeve 8, and the bolt 9 is used to press and lock the guide post 7; the guide rod 10 is located on one side of the positioning sleeve 8, and the guide rod 10 is slidably connected to the positioning plate 6, and the guide rod 10 is fixedly connected to the linkage bar 5; a limit block 11 is fixedly installed on the top of the guide post 7. So that when the guide post 7 needs to move down, the bolt 9 can be reversed first, the bolt 9 and the positioning sleeve 8 can be separated by threads, and then the guide post 7 can be guided down along the inner wall of the positioning sleeve 8. At the same time, the limiting block 11 limits the vertical height of the guide post 7. In this way, the linkage bar 5 drives multiple positioning pressure plates 4 to move down, and at the same time, the linkage bar 5 drives the guide rod 10 to move down. The guide rod 10 can stably move down along the inner wall of the positioning plate 6, ensuring that the linkage bar 5 moves down to the designated position according to the designated path. The bolt 9 is rotated forward, and the bolt 9 and the positioning sleeve 8 are engaged by the thread meshing force, so that the left end of the bolt 9 is pressed against the guide post 7, and the guide post 7 and the positioning sleeve 8 are firmly bound and locked.

[0022] In this embodiment, as Figure 1 As shown, one end of the cooling tank 1 is fixedly connected to the liquid inlet pipe 12, and the other end of the cooling tank 1 is fixedly connected to the liquid outlet pipe 13, so that the liquid inlet pipe 12 can pour the coolant into the cooling tank 1. The liquid outlet pipe 13 is closed in the early stage, and the coolant can be discharged through the liquid outlet pipe 13 after the stress is relieved by cooling.

[0023] In this embodiment, as shown in the figure, support blocks 14 are fixedly connected to both sides of the positioning plate 6. A gripping rod 15 is fixedly installed at one end of each support block 14 so that when the positioning plate 6 moves down, the hand can grip the outer wall of the gripping rod 15 and the support block 14 moves down through the hand gripping rod 15. The support block 14 moves the positioning plate 6 down, which facilitates the positioning plate 6 to move down. In this way, the positioning plate 6 drives the stress relief frame 2 into the cooling box 1 to realize the stress cooling and stress relief operation.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A thermal straightening stress relief device for low-joint rails, comprising a cooling box (1), characterized in that: The cooling box (1) is provided with an elimination frame (2) above it, and the inner wall of the elimination frame (2) is provided with a positioning elimination component, the positioning elimination component including: Multiple positioning grooves (3) are opened on the inner wall of the elimination frame (2), and multiple guide holes (16) are opened on the outer wall of the elimination frame (2). Multiple positioning plates (4) are located above the elimination frame (2), and the positioning plates (4) are used to be inserted into the positioning groove (3); Linkage bar (5) is fixedly connected to the upper surface of positioning pressure plate (4), and guide post (7) is fixedly connected to the upper surface of linkage bar (5). The positioning plate (6) is slidably connected to the outer wall of the guide post (7), and the positioning plate (6) is fixedly connected to the elimination frame (2).

2. The rail low-joint thermal straightening stress relief device according to claim 1, characterized in that: Multiple positioning grooves (3) are arranged equidistantly from left to right, and the inner wall of the positioning groove (3) is a smooth surface.

3. The rail low-joint thermal straightening stress relief device according to claim 1, characterized in that: Multiple flow guide holes (16) are arranged at equal intervals from front to back, and the vertical cross-sectional shape of the flow guide holes (16) is rectangular.

4. The rail low joint thermal straightening stress relief device according to claim 1, characterized in that: The lower surface cross-sectional area of ​​the positioning plate (4) is smaller than the top surface cross-sectional area, and the outer wall of the positioning plate (4) is a smooth surface.

5. The rail low joint thermal straightening stress relief device according to claim 1, characterized in that: The positioning sleeve (8) is fixedly connected to the upper surface of the positioning plate (6), and the positioning sleeve (8) is slidably connected to the guide post (7); A threaded bolt (9) is embedded on one side of the positioning sleeve (8), and the bolt (9) is used to press and lock the guide post (7). The guide rod (10) is located on one side of the positioning sleeve (8), and the guide rod (10) is slidably connected to the positioning plate (6). The guide rod (10) is fixedly connected to the linkage bar (5), and the top of the guide column (7) is fixedly installed with a limit block (11).

6. The rail low-joint thermal straightening stress relief device according to claim 1, characterized in that: One end of the cooling tank (1) is fixedly connected to an inlet pipe (12), and the other end of the cooling tank (1) is fixedly connected to an outlet pipe (13).

7. The rail low-joint thermal straightening stress relief device according to claim 1, characterized in that: Both sides of the positioning plate (6) are fixedly connected to support blocks (14), and a gripping rod (15) is fixedly installed at one end of each support block (14).

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