Easily removable rail field glued frozen joint

Abstract

This utility model relates to a rail freezing joint, specifically, an easily detachable rail on-site adhesive freezing joint. It includes two connecting plates, with a positioning mechanism on the side of each connecting plate away from the rail. This positioning mechanism is used to fix the connecting bolts and nuts and prevent them from rotating. This utility model uses bolts and nuts to fix the connecting plates at the joint of two rail sections, connecting the two rail sections. Simultaneously, the connecting assembly installs the positioning plate on the connecting plates, so that the positioning shell is fitted onto the outer side of the bolt end and nut. The inner wall of the positioning shell fits tightly against the side wall of the bolt end and nut, thereby preventing the bolts and nuts from rotating and loosening during rail vibration. This improves the fixing effect of the bolts and nuts on the connecting plates, eliminating the need for frequent bolt checks and reducing labor costs.

Description

Technical Field

[0001] This utility model relates to a rail freezing joint, specifically, to an easily disassembled rail on-site adhesive freezing joint. Background Technology

[0002] A frozen joint is a rail connection device used for seamless railway tracks. It uses specially designed crescent-shaped washers or high-strength bolts to fix ordinary rail joints, keeping the rail ends in a tight-fitting state to eliminate rail gaps and reduce wheel impact. This joint is widely used in scenarios where joints are not suitable, such as open-deck bridges, small bridges, and steel beams with wide temperature spans. The frozen joint for rail joints offers advantages such as easy installation, stable performance, and resistance to tensile failure. Existing clamps are typically fixed to the rail using bolts, eliminating the need for adhesives to firmly bond the clamps to the rail. To prevent damage to rail 3 during the forceful removal of the old clamps, the vibration generated by the train running on rail 3 causes the rail 3 to vibrate, resulting in friction between the vibrating rail 3 and the bolts. This prolonged vibration leads to bolt loosening, requiring frequent bolt checks by staff, increasing labor costs. Furthermore, it is difficult for staff to promptly check for loose bolts, thus affecting the fixation of rail 3 and the normal operation of the train. Therefore, we propose an easily disassembled, on-site glued, frozen joint for the rail. Utility Model Content

[0003] The purpose of this utility model is to provide an easy-to-disassemble on-site adhesive-freezing joint for rails, so as to solve the problem mentioned in the background art that rail vibration causes bolt loosening, resulting in increased labor costs and affecting rail fixation.

[0004] To address the aforementioned problems, the present invention aims to provide an easily detachable, on-site adhesive-bonded and frozen joint for rails, comprising two connecting plates located on either side of the connection point between two rail sections. Several connecting holes are formed through the connecting plates and the sidewalls of the rails. Connecting bolts are installed inside the connecting holes, with one end of each bolt threaded through the hole and connected to a nut. The bolts and nuts fix the two connecting plates at the connection point of the two rail sections. A positioning mechanism is provided on the side of the connecting plates away from the rails. This positioning mechanism is used to fix the connecting bolts and nuts and prevent them from rotating. The positioning mechanism includes a positioning plate located on the side of the connecting plates away from the rails. Several positioning shells are fixedly connected to the side of the positioning plate near the connecting clamp. After the connecting bolts and nuts fix the connecting clamp, the positioning shells are respectively fitted onto the ends of the connecting bolts and the outside of the nuts. Several connecting assemblies are provided on the side of the connecting clamp near the positioning plate. The connecting assemblies are used to connect the connecting clamp and the positioning plate together. The two connecting clamps are fixed to both sides of the connection between the two rail sections by the connecting bolts and nuts, so that the two connecting clamps connect the two rail sections. After the connecting clamp is fixed, the positioning plate is moved by the connecting assemblies so that the positioning shells are fitted onto the ends of the connecting bolts and the outside of the nuts, thereby fixing the connecting bolts and nuts and preventing the connecting bolts and nuts from rotating and causing loosening.

[0005] As a further improvement to this technical solution, the connecting clamp is provided with three through-holes near both ends and the middle. The internal threads of the through-holes are connected to push rod bolts. The end of the push rod bolt near the rail passes through the through-hole and is fixed with a movable top pad. The movable top pad is in close contact with the side wall of the rail. When it is necessary to disassemble and replace the old connecting clamp, the worker uses an electric wrench to turn the push rod bolt. The rotating push rod bolt drives the connecting clamp to move away from the rail, thus making it easier to remove the old connecting clamp.

[0006] As a further improvement to this technical solution, the connecting assembly includes a mounting shell that is fixedly connected to the connecting clamp plate and is vertically arranged on the side near the positioning plate. A sliding block is slidably connected inside the mounting shell along the axial direction of the mounting shell. The end of the sliding block away from the connecting clamp plate passes through the mounting shell and extends outward. A connecting block is slidably connected inside the sliding block. The end of the connecting block away from the connecting clamp plate passes through the sliding block and is fixedly connected to the side of the positioning plate near the connecting clamp plate. During the movement of the positioning plate, the connecting block is driven to move along the axial direction of the sliding block.

[0007] As a further improvement to this technical solution, the connecting block has an installation groove on the side away from the positioning plate. Two tension springs are fixedly connected inside the installation groove. The end of the tension spring away from the positioning plate is fixedly connected to the inner wall of the sliding block. When the positioning plate is away from the connecting clamp, the tension spring is in a stretched state. At this time, the tension spring contracts and drives the positioning plate and the positioning shell to move towards the connecting clamp.

[0008] As a further improvement to this technical solution, the positioning shell matches the shape of the end of the connecting bolt and the nut. When the positioning shell is fitted on the outside of the end of the connecting bolt and the nut, the positioning shell prevents the end of the connecting bolt and the nut from rotating, thereby reducing the rotation angle of the end of the connecting bolt and the nut inside the positioning shell.

[0009] As a further improvement to this technical solution, two limiting blocks are symmetrically fixedly connected to the inner wall of the mounting shell near the middle. The limiting blocks are used to restrict the sliding block inside the mounting shell to prevent the sliding block from easily sliding out of the mounting shell, thereby avoiding the positioning plate from falling off. A limiting groove is provided on the side of the sliding block near the limiting block.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This easily detachable rail on-site adhesive-bonded and frozen joint uses bolts and nuts to fix the connecting clamp to the joint of two rail sections, connecting the two rail sections. At the same time, the connecting assembly installs a positioning plate on the connecting clamp, so that the positioning shell is fitted on the outside of the bolt end and the nut. The inner wall of the positioning shell fits tightly with the side wall of the bolt end and the nut, thereby preventing the bolt and nut from rotating and loosening during rail vibration. This improves the fixing effect of the bolt and nut on the connecting clamp, eliminating the need for frequent bolt checks by workers and reducing labor costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is one of the overall sectional views of this utility model;

[0014] Figure 3 This is the second overall sectional view of the present invention;

[0015] Figure 4 This is one of the assembly diagrams of the connecting clamp and the positioning mechanism in this utility model;

[0016] Figure 5 This is the second assembly diagram of the connecting clamp and positioning mechanism in this utility model;

[0017] Figure 6This is an assembly diagram of the connecting clamp and the mounting shell in this utility model;

[0018] Figure 7 This is a schematic diagram of the positioning plate in this utility model;

[0019] Figure 8 This is a cross-sectional view of the connecting component in this utility model;

[0020] Figure 9 This is an assembly diagram of the top rod bolt and the movable top pad in this utility model.

[0021] The meanings of the labels in the diagram are as follows:

[0022] 1. Connecting clamp; 11. Connecting bolt; 12. Nut; 13. Top rod bolt; 14. Movable top washer;

[0023] 2. Positioning mechanism; 21. Positioning plate; 22. Positioning housing; 23. Mounting housing; 24. Sliding block; 25. Connecting block; 26. Tension spring;

[0024] 3. Steel rails. Detailed Implementation

[0025] 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.

[0026] Example 1

[0027] Please see Figure 1 - Figure 3 and Figure 9As shown, the purpose of this embodiment is to provide an easily detachable, on-site glued and frozen joint for rails, including two connecting plates 1. The two connecting plates 1 are located on both sides of the connection point of two rail sections 3. Several connecting holes are provided through the two connecting plates 1 and the side walls of the rail sections 3. Connecting bolts 11 are provided inside the connecting holes. One end of the connecting bolt 11 passes through the connecting hole and is threaded with a nut 12. The several connecting bolts 11 and nuts 12 fix the two connecting plates 1 at the connection point of the two rail sections 3, that is, the ends of the nuts 12 and the connecting bolts 11 are respectively... Located on the side of the two connecting plates 1 that are far apart from each other, the connecting plates 1 have three through holes near the ends and the middle. The inside of the through holes is threaded with a push rod bolt 13. The end of the push rod bolt 13 near the rail 3 passes through the through hole and is fixed with a movable top pad 14. The movable top pad 14 is in close contact with the side wall of the rail 3. During the rotation of the push rod bolt 13, the movable top pad 14 protects the push rod bolt 13 and the rail 3 to reduce the damage to the rail 3 caused by the push rod bolt 13 during rotation.

[0028] The workers thread the top bolt 13 through the ejector hole and then adhesively bond the movable top pad 14 to the top bolt 13. Next, adhesive is applied to the side of the connecting plate 1 closest to the rail 3, and the connecting plate 1 is bonded to the joint of the two rail sections 3, ensuring the connecting holes on the rail 3 and the connecting plate 1 align. Then, one end of the connecting bolt 11 is threaded through the connecting hole, and a nut 12 is threaded onto the end of the connecting bolt 11. The connecting bolt 11 and nut 12 further secure the connecting plate 1, ensuring its stability during use. When the old connecting plate 1 needs to be disassembled, the workers first remove the connecting bolt 11 and nut 12 from the connecting plate 1. Then, the workers use an electric wrench to turn the top bolt 13. The rotating top bolt 13 moves the connecting plate 1 away from the rail 3, separating the connecting plate 1 from the rail 3, thus facilitating the removal of the old connecting plate 1.

[0029] refer to Figure 3 - Figure 8A positioning mechanism 2 is provided on the side of the connecting clamp 1 away from the rail 3. The positioning mechanism 2 is used to fix the connecting bolt 11 and nut 12 and prevent the connecting bolt 11 and nut 12 from rotating. The positioning mechanism 2 includes a positioning plate 21 located on the side of the connecting clamp 1 away from the rail 3. Several positioning shells 22 are fixedly connected to the side of the positioning plate 21 near the connecting clamp 1. The positioning shells 22 are positioned corresponding to the connecting holes. After the connecting bolt 11 and nut 12 fix the connecting clamp 1, the several positioning shells 22 are respectively sleeved on the ends of the connecting bolt 11 and the outside of the nut 12. The positioning shells 22 are connected to the connecting bolt 11 and nut 12. The shapes of the bolt 11 end and the nut 12 are matched. When the positioning shell 22 is sleeved on the outside of the bolt 11 end and the nut 12, the positioning shell 22 blocks the bolt 11 end and the nut 12 from rotating, thereby reducing the rotation angle of the bolt 11 end and the nut 12 inside the positioning shell 22, preventing the bolt 11 and the nut 12 from rotating and causing loosening, and preventing the bolt 11 and the nut 12 from loosening and causing the fixing effect of the connecting clamp 1 to decrease. The connecting clamp 1 is provided with several connecting components on the side near the positioning plate 21. The connecting components are used to connect the connecting clamp 1 and the positioning plate 21 together.

[0030] The connecting assembly includes a mounting shell 23 vertically mounted on the side of the connecting clamping plate 1 near the positioning plate 21. A sliding block 24 is slidably connected inside the mounting shell 23 along its axis. The end of the sliding block 24 away from the connecting clamping plate 1 passes through the mounting shell 23 and extends outward. A connecting block 25 is slidably connected inside the sliding block 24. The connecting block 25 slides horizontally towards or away from the connecting clamping plate 1. The end of the connecting block 25 away from the connecting clamping plate 1 passes through the sliding block 24 and is fixedly connected to the side of the positioning plate 21 near the connecting clamping plate 1. A mounting groove is provided on the side of the connecting block 25 away from the positioning plate 21. Two tension springs 26 are fixedly connected inside the mounting groove. The end of the tension spring 26 away from the positioning plate 21 is fixedly connected to the inner wall of the sliding block 24. When the positioning plate 21 and the connecting block 25 are located away from the connecting clamping plate 1, the tension spring 26 is in a stretched state. At this time, the tension spring 26 contracts and drives the positioning plate 21 and the connecting block 25 to move towards the connecting clamping plate 1.

[0031] Two limiting blocks are symmetrically fixedly connected to the inner wall of the mounting shell 23 near the middle. The limiting blocks are used to restrict the sliding block 24 inside the mounting shell 23 to prevent the sliding block 24 from sliding out of the mounting shell 23 during the sliding process. This avoids the positioning plate 21 from falling off and affecting the subsequent positioning mechanism 2's fixing of the connecting bolt 11 and nut 12. A limiting groove is opened on the side of the sliding block 24 near the limiting block. When the limiting block enters the interior of the limiting groove, the limiting block separates from the side wall of the sliding block 24 to avoid the sliding block 24 from being severely worn during the sliding process. When the limiting block contacts the bottom of the limiting groove, the sliding block 24 stops moving under the restriction of the limiting block.

[0032] Initially, the sliding block 24 is located inside the mounting shell 23 near the top, positioning the positioning plate 21 above the connecting hole. After the connecting bolt 11 and nut 12 secure the connecting clamp 1, the operator pulls the positioning plate 21 away from the connecting clamp 1. The moving positioning plate 21 causes the connecting block 25 to move, stretching the tension spring 26. One end of the connecting block 25 inside the sliding block 24 has a protrusion, which restricts one end of the connecting block 25 inside the sliding block 24, preventing the connecting block 25 from moving out of the sliding block 24 during movement. This would cause the connecting block 25 and the positioning plate 21 to detach, affecting the subsequent use of the positioning plate 21. Simultaneously, the moving distance of the connecting block 25 is greater than the subsequent movement of the positioning shell 22. When the connecting block 25 moves to its furthest position from the connecting clamp 1, the positioning shell 22 separates from the connecting bolt 11 or nut 12. To facilitate the subsequent movement of the positioning plate 21 and positioning shell 22, the operator then presses the positioning plate 21 downwards. The moving positioning plate 21 drives the connecting block 25 and the sliding block 24 to move downwards along the axis of the mounting shell 23, so that the positioning plate 21 moves to the position corresponding to the connecting bolt 11 and the nut 12. At this time, the tension spring 26, which is in a stretched state, contracts and drives the connecting block 25 and the positioning plate 21 to move towards the connecting clamp 1, so that several positioning shells 22 are respectively fitted onto the end of the connecting bolt 11 and the outside of the nut 12. When the connecting bolt 11 and the nut 12 rotate, the connecting bolt 11 and the nut 12 abut against the inner wall of the positioning shell 22, thereby reducing the rotation angle of the connecting bolt 11 and the nut 12 and preventing the connecting bolt 11 and the nut 12 from loosening due to rotation, which would affect the fixing effect of the connecting bolt 11 and the nut 12 on the connecting clamp 1.

[0033] When using this device:

[0034] First, the workers installed the top rod bolt 13 with the movable top pad 14 attached inside the ejection hole on the connecting clamp plate 1. Then, the workers attached the connecting clamp plate 1 with adhesive on one side to the connection of the two rail sections 3. At this time, the workers fixed the connecting clamp plate 1 on the rail 3 with the connecting bolt 11 and nut 12, so that the connecting clamp plate 1 connected the two rail sections 3 together.

[0035] At this time, the staff pulls the positioning plate 21 towards the connecting bolt 11 and nut 12. The tension spring 26, which is in a stretched state, contracts and drives the positioning plate 21 and positioning shell 22 towards the connecting clamp plate 1. This causes several positioning shells 22 to be respectively fitted onto the end of the connecting bolt 11 and the outside of the nut 12. The positioning shells 22 prevent the connecting bolt 11 and nut 12 from rotating and loosening during use, thereby improving the fixing effect of the connecting bolt 11 and nut 12 on the connecting clamp plate 1.

[0036] When it is necessary to disassemble and replace the old connecting clamp 1, the worker pulls the positioning plate 21 away from the connecting bolt 11 and nut 12, so that the positioning shell 22 releases the fixing of the connecting bolt 11 and nut 12. Then, the worker uses an electric wrench to turn the nut 12 and the connecting bolt 11 to remove them from the connecting clamp 1. At this time, the worker turns the top rod bolt 13 with an electric wrench. During the rotation, the top rod bolt 13 drives the connecting clamp 1 to move away from the rail 3, so that the connecting clamp 1 is separated from the rail 3, making it easier to remove the connecting clamp 1.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An easily detachable, field-bonded, frozen joint for rails, comprising two connecting plates (1), the two connecting plates (1) being located on both sides of the connection point of two rail sections (3), the two connecting plates (1) and the side walls of the rails (3) having several connecting holes, the connecting holes having connecting bolts (11) inside, one end of each connecting bolt (11) passing through the connecting hole and threaded with a nut (12), the several connecting bolts (11) and nuts (12) fixing the two connecting plates (1) at the connection point of the two rail sections (3), characterized in that: The connecting clamp (1) is provided with a positioning mechanism (2) on the side away from the rail (3). The positioning mechanism (2) is used to fix the connecting bolt (11) and nut (12) and prevent the connecting bolt (11) and nut (12) from rotating. The positioning mechanism (2) includes a positioning plate (21) located on the side of the connecting clamp (1) away from the rail (3). Several positioning shells (22) are fixedly connected to the side of the positioning plate (21) close to the connecting clamp (1). After the connecting bolt (11) and nut (12) fix the connecting clamp (1), several positioning shells (22) are respectively sleeved on the end of the connecting bolt (11) and the outside of the nut (12). Several connecting components are provided on the side of the connecting clamp (1) close to the positioning plate (21). The connecting components are used to connect the connecting clamp (1) and the positioning plate (21) together.

2. A readily demountable rail field glued and frozen joint according to claim 1, characterized in that: The connecting clamp (1) has three through holes near its two ends and the middle. The through holes are threaded with push rod bolts (13). The end of the push rod bolt (13) near the rail (3) passes through the through hole and is fixed with a movable top pad (14). The movable top pad (14) is in close contact with the side wall of the rail (3).

3. The easily removable rail field-glued frozen joint according to claim 1, characterized in that: The connecting assembly includes a mounting shell (23) that is vertically mounted on the side of the connecting clamp (1) near the positioning plate (21). A sliding block (24) is slidably connected inside the mounting shell (23) along the axial direction of the mounting shell (23). One end of the sliding block (24) away from the connecting clamp (1) passes through the mounting shell (23) and extends outward. A connecting block (25) is slidably connected inside the sliding block (24). One end of the connecting block (25) away from the connecting clamp (1) passes through the sliding block (24) and is fixedly connected to the side of the positioning plate (21) near the connecting clamp (1).

4. The easily detachable on-site adhesive-bonded and frozen joint for rails according to claim 3, characterized in that: The connecting block (25) has an installation groove on the side away from the positioning plate (21). Two tension springs (26) are fixedly connected inside the installation groove. The end of the tension spring (26) away from the positioning plate (21) is fixedly connected to the inner wall of the sliding block (24).

5. The easily removable rail field-glued frozen joint according to claim 3, characterized in that: The positioning shell (22) matches the shape of the end of the connecting bolt (11) and the nut (12). When the positioning shell (22) is sleeved on the outside of the end of the connecting bolt (11) and the nut (12), the positioning shell (22) prevents the end of the connecting bolt (11) and the nut (12) from rotating.

6. The easily removable rail field-glued frozen joint according to claim 3, characterized in that: Two limiting blocks are symmetrically fixedly connected to the inner wall of the mounting shell (23) near the middle. The limiting blocks are used to restrict the sliding block (24) inside the mounting shell (23). A limiting groove is opened on the side of the sliding block (24) near the limiting block.

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