Abutting bolt structure for reinforcing steel rail
By using a threaded sleeve and tightening bolt structure, combined with a limit sleeve, slot and insertion hole design, and using pins and one-way bearings to prevent bolt loosening, the problem of bolt loosening caused by rail vibration is solved, and the reinforcement effect of the clamping plate is improved.
Patent Information
- Application Number
- CN202422690709.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-05
AI Technical Summary
In the existing technology, although it is convenient to use bolts to fasten the clamps to the rails, the bolts may loosen because the rails are under constant vibration, resulting in poor reinforcement of the rails by the clamps.
It adopts a threaded sleeve and clamping bolt structure, combined with a limit sleeve, slot and insertion hole design, and is fixed by a pin to prevent the bolt from loosening; and enhances stability with a one-way bearing and arc structure to accommodate machining errors, and sets a fixing post and spring to prevent the pin from falling off.
It effectively prevents the clamping bolts from rotating in the circumferential direction, improves the reinforcement effect of the clamping plate, enhances the stability of the bolts, adapts to processing errors, ensures the positioning of the pins, and prevents them from falling off.
Smart Images
Figure CN223496938U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of rail technology, specifically relating to a rail reinforcement bolt structure. Background Technology
[0002] Steel rails are the main component of railway tracks. Their function is to guide the wheels of locomotives and rolling stock, bear the enormous pressure of the wheels, and transmit this pressure to the sleepers. Steel rails must provide the wheels with a continuous, smooth, and least resistance-prone rolling surface. In electrified railways or automatic block signaling sections, steel rails can also serve as track circuits.
[0003] Currently, rails are generally constructed by fixing multiple rails together, for example, by welding. Aluminothermic welding is typically used to weld two rails together to create a seamless track. However, because the weld joints of aluminothermic welds are relatively weak, the welded joints between rails are prone to breakage during heavy-load operation.
[0004] Traditional, such as Figure 1 As shown, in order to improve the structural strength of the rail at the welded joint between rails, a clamping plate 4 is generally added to the web of rail 1. The clamping plate 4 is tightened by tightening the bolt 6 in the threaded sleeve 5 on the bracket 3 to achieve the purpose of reinforcing rail 1.
[0005] The existing technology has the following shortcomings:
[0006] While bolting the clamps to the rails is convenient, the rails are constantly vibrating (vehicles vibrate the rails during operation), which can cause the bolts to loosen, resulting in poor reinforcement of the rails by the clamps. Utility Model Content
[0007] In view of this, the present invention provides a rail reinforcement clamping bolt structure to solve the problem that although the method of clamping the clamping plate to the rail with bolts is convenient to operate, the bolts may loosen because the rail is in a state of vibration for a long time (the vibration caused by the vehicle running), resulting in poor reinforcement effect of the clamping plate on the rail.
[0008] The technical solution adopted in this utility model is as follows:
[0009] A rail reinforcement clamping bolt structure includes a threaded sleeve and a clamping bolt screwed to the threaded sleeve;
[0010] It also includes a bolt fixing assembly, which is used to fix the bolt and prevent the bolt from loosening;
[0011] The bolt fixing assembly includes a limiting sleeve disposed at the end of the sleeve, the limiting sleeve being coaxial with the sleeve, a slot being provided through the side wall of the limiting sleeve, the slot being arranged along the axial direction of the limiting sleeve, and an insertion hole being provided on the side wall of the tightening bolt to mate with the slot, the tightening bolt being fixed by inserting a pin into the slot and the insertion hole.
[0012] In this technical solution, it should be noted that the threaded sleeve is mounted on the support, with the threaded sleeve facing the clamps on both sides of the rail. The support is mounted on the base plate, which is located below the rail. The contour of one end of the clamp is adapted to the contour of the web rail of the rail. The clamp is made of 40Cr steel or other high-quality alloy steel with better performance than 40Cr steel, and is manufactured using a forging process. For areas with ambient temperatures of -40℃ and below, 42CrMo or better alloy steel should be used. In this scheme, when it is necessary to fix the clamping plate to the rail: First, thoroughly grind and remove rust from the rail top and bottom surfaces within a 530mm length range on both sides of the weld (before grinding, mark the grinding length range, clean the surface with a wire brush, wipe off surface oil stains with cleaning solvent or cleaning wipes, and measure the grinding surface with a 1m straightedge to determine the key areas for grinding); after grinding, place the base plate under the rail, with the two threaded sleeves on both sides of the base plate symmetrically positioned on the left and right sides of the rail. Then, place the clamping plate on the left and right sides of the rail and alternately tighten the two left and right clamping bolts to ensure uniform torque until the clamping bolts tighten the clamping plate. Finally, the worker inserts the pin into the slot and hole, so that the slot limits the pin, thereby preventing the clamping bolt from rotating in the circumferential direction and improving the reinforcement effect of the clamping plate.
[0013] Preferably, there are multiple slots, and the multiple slots are equidistantly spaced along the circumference of the limiting sleeve.
[0014] It should be noted that the stability of the clamping bolt is further increased by setting up multiple slots and holes in this technical solution.
[0015] Preferably, the length of the slot is greater than the diameter of the socket.
[0016] In this technical solution, it should be noted that if the length of the slot is the same as the diameter of the insertion hole, then after the clamping bolt is tightened by screwing the clamping plate, the insertion hole and the slot must be completely aligned before the pin can be inserted into the insertion hole and the slot. However, due to machining errors, after the clamping bolt is tightened by screwing the clamping plate, the positions of the slot and the insertion hole may deviate, that is, the insertion hole may be located to the left or right of the slot. Based on this, in this solution, the length of the slot is set to be greater than the diameter of the insertion hole. This setting can accommodate the machining errors of each component, so that the insertion hole can be aligned with the slot within the length range of the slot.
[0017] Preferably, the limiting sleeve is connected to the sleeve via a one-way bearing, and the direction in which the limiting sleeve can rotate is the same as the direction in which the tightening bolt is screwed into the threaded sleeve.
[0018] In this technical solution, it should be noted that due to processing errors, after the clamping bolt is tightened by screwing, the insertion hole and slot may not align in the circumferential direction of the clamping bolt. Therefore, this solution incorporates a one-way bearing. A one-way bearing is a type of bearing that can rotate freely in one direction but is locked in the other. This means that the one-way bearing allows the limiting sleeve to rotate only in one direction, preventing it from rotating in the other. In this solution, the clockwise rotation direction of the clamping bolt is defined as the direction in which the clamping bolt is screwed into the threaded sleeve. The limiting sleeve is designed to rotate clockwise but not counterclockwise. After tightening the clamping bolt clockwise to secure the clamping plate, if the insertion hole and slot are not aligned, the operator can rotate the limiting sleeve clockwise until they align. Then, the pin is inserted into the slot and insertion hole. Since the limiting sleeve cannot rotate counterclockwise, the pin can also limit the clamping bolt counterclockwise, preventing it from rotating counterclockwise.
[0019] Preferably, the end of the clamping bolt has an arc-shaped structure.
[0020] In this technical solution, it should be noted that an arc-shaped clamping groove can be provided on the side wall of the clamping plate. The arc-shaped clamping groove can increase the contact area between the clamping bolt and the clamping plate, so that the clamping bolt has a better clamping effect on the clamping plate.
[0021] Preferably, the side wall of the insertion hole is provided with a fixing hole, the side wall of the pin is provided with a mounting groove, the mounting groove is provided with a fixing post that can be inserted into the fixing hole, one end of the fixing post extends out of the mounting groove, and the other end is connected to the mounting groove by a spring.
[0022] In this technical solution, it should be noted that, in order to prevent the pin from falling out of the socket, this solution is equipped with a fixing post and a fixing hole. When the pin needs to be inserted into the socket, the worker presses the fixing post into the mounting groove, and then inserts the pin into the socket. When the mounting groove and the fixing hole are aligned, the fixing post is inserted into the fixing hole by the elastic force of the spring, thereby positioning the pin and preventing it from falling out.
[0023] Preferably, the end of the fixing post extending out of the mounting groove has an arc-shaped structure.
[0024] In this technical solution, it should be noted that the arc-shaped structure allows the pin to be inserted into the socket without the need for manual pressing of the fixing post into the mounting groove. When the pin is inserted into the socket, the fixing post is decomposed into its axial direction by the arc-shaped structure, so that the fixing post can be automatically pressed into the mounting groove.
[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0026] 1. In this utility model, after the clamping bolts tighten the clamping plate, the worker inserts the pin into the slot and the hole, so that the slot limits the pin, thereby preventing the clamping bolts from rotating in the circumferential direction and improving the reinforcement effect of the clamping plate;
[0027] 2. In this utility model, the length of the slot is set to be greater than the diameter of the socket. This setting can accommodate the processing errors of each component, so that the socket can be aligned with the slot within the length range of the slot.
[0028] 3. In this utility model, a one-way bearing is provided. A one-way bearing is a type of bearing that can rotate freely in one direction and is locked in the other direction. That is, by setting a one-way bearing, the limiting sleeve can only rotate in one direction and cannot rotate in the other direction. In this solution, the clockwise rotation direction of the clamping bolt is specified as the direction in which the clamping bolt is screwed into the threaded sleeve. Therefore, the limiting sleeve is specified to be able to rotate in the clockwise direction but not in the counterclockwise direction. After the clamping bolt is screwed clockwise to clamp the clamping plate, if the insertion hole and the slot are not aligned at this time, the operator can rotate the limiting sleeve clockwise until the insertion hole and the slot are aligned. Then, the pin is inserted into the slot and the insertion hole. Since the limiting sleeve cannot rotate in the counterclockwise direction, the pin can also limit the clamping bolt in the counterclockwise direction to prevent the clamping bolt from rotating in the counterclockwise direction.
[0029] 4. In this utility model, a fixing post and a fixing hole are provided. When it is necessary to insert the pin into the insertion hole, the worker presses the fixing post into the mounting groove, and then inserts the pin into the insertion hole. When the mounting groove and the fixing hole are aligned, the fixing post is inserted into the fixing hole by the elastic force of the spring, thereby positioning the pin and preventing the pin from falling off. Attached Figure Description
[0030] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:
[0031] Figure 1 This is a three-dimensional structural diagram of a steel rail reinforced by a clamp in the prior art;
[0032] Figure 2 This is a three-dimensional structural diagram of the present invention;
[0033] Figure 3 This is a three-dimensional structural diagram of the fixing device of this utility model;
[0034] Figure 4 This is a cross-sectional view of the clamping bolt of this utility model after it has been cut and separated from the pin.
[0035] Among them: 1-rail, 2-base plate, 3-bracket, 4-clamping plate, 5-threaded sleeve, 6-tightening bolt, 7-limiting sleeve, 8-one-way bearing, 9-pin, 10-tightening groove, 11-insertion hole, 12-slot, 13-fixing hole, 14-mounting groove, 15-spring, 16-fixing column. Detailed Implementation
[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.
[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0038] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.
[0039] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0041] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.
[0042] Example
[0043] like Figures 1-4 As shown in the figure, an embodiment of the present invention discloses a clamping structure for reinforcing a rail 1, including a threaded sleeve 5 and a clamping bolt 6 screwed to the threaded sleeve 5;
[0044] It also includes a bolt fixing assembly, which is used to fix the bolt and prevent the bolt from loosening;
[0045] The bolt fixing assembly includes a limiting sleeve 7 disposed at the end of the sleeve. The limiting sleeve 7 is coaxial with the sleeve. A slot 12 is provided through the side wall of the limiting sleeve 7. The slot 12 is arranged along the axial direction of the limiting sleeve 7. The side wall of the clamping bolt 6 is provided with an insertion hole 11 that mates with the slot 12. The clamping bolt 6 is fixed by inserting a pin 9 into the slot 12 and the insertion hole 11.
[0046] It should be noted that in this scheme, the threaded sleeve 5 is mounted on the bracket 3, facing the clamping plates 4 on both sides of the rail 1. The bracket 3 is mounted on the base plate 2, which is located below the rail 1. The contour of one end of the clamping plate 4 matches the contour of the web rail of the rail 1. The clamping plate 4 is made of 40Cr steel or other high-quality alloy steel with better performance than 40Cr steel, and is manufactured using a forging process. In areas with ambient temperatures of -40℃ and below, 42CrMo or better alloy steel should be used. In this scheme, when it is necessary to fix the clamping plate 4 to the rail 1: First, thoroughly grind and remove rust from the rail title and the upper surface of the rail base within a 530mm length range on both sides of the weld (before grinding, the grinding length range should be marked, and the surface should be cleaned with a wire brush, and the surface oil stains should be wiped off with cleaning solvent or cleaning wipes. A 1m straightedge should be used to measure the grinding surface to determine the key areas for grinding). After grinding, Place the base plate 2 under the rail, with the two threaded sleeves 5 on both sides of the base plate 2 symmetrically positioned on the left and right sides of the rail 1. Then, place the clamping plates 4 on the left and right sides of the rail 1 and alternately tighten the two left and right clamping bolts 6 to ensure uniform torque on the left and right bolts until the clamping bolts 6 clamp the clamping plates 4. Finally, the worker inserts the pin 9 into the slot 12 and the insertion hole 11, so that the slot 12 limits the pin 9, thereby preventing the clamping bolts 6 from rotating in the circumferential direction and improving the reinforcement effect of the clamping plates 4.
[0047] like Figure 3As shown, in this embodiment, there are multiple slots 12, which are equidistantly spaced along the circumference of the limiting sleeve 7. It should be noted that the arrangement of multiple slots 12 and insertion holes 11 further increases the stability of the tightening bolt 6.
[0048] like Figure 3 As shown, in this embodiment, the length of the slot 12 is greater than the diameter of the socket 11. It should be noted that if the length of the slot 12 is the same as the diameter of the socket 11, then after the clamping bolt 6 tightens the clamping plate 4 by screwing, the socket 11 and slot 12 must be perfectly aligned before the pin 9 can be inserted into them. However, due to machining errors, after the clamping bolt 6 tightens the clamping plate 4 by screwing, the positions of the slot 12 and socket 11 may deviate, i.e., the socket 11 may be located to the left or right of the slot 12. Therefore, in this solution, the length of the slot 12 is set to be greater than the diameter of the socket 11. This setting can accommodate machining errors in various components, ensuring that the socket 11 is aligned with the slot 12 within its length range.
[0049] like Figure 3 As shown, in this embodiment, the limiting sleeve 7 is connected to the sleeve via a one-way bearing 8. The direction in which the limiting sleeve 7 can rotate is the same as the direction in which the tightening bolt 6 is screwed into the threaded sleeve 5. It should be noted that due to machining errors, after the clamping bolt 6 tightens the clamping plate 4 by screwing, there may be a misalignment between the insertion hole 11 and the slot 12 in the circumferential direction of the tightening bolt 6. Based on this, this solution sets up a one-way bearing 8. The one-way bearing 8 is a type of bearing that can rotate freely in one direction but is locked in the other direction. That is, by setting up the one-way bearing 8, the limiting sleeve 7 can only rotate in one direction and cannot rotate in the other direction. In this solution, the clockwise rotation direction of the tightening bolt 6 is defined as the direction in which the tightening bolt 6 is screwed into the threaded sleeve 5. Since the direction of the sleeve 5 is specified, the limiting sleeve 7 is designed to rotate clockwise but not counterclockwise. After tightening the clamping bolt 6 clockwise to clamp the clamping plate 4, if the insertion hole 11 and the slot 12 are not aligned, the operator can rotate the limiting sleeve 7 clockwise until the insertion hole 11 and the slot 12 are aligned. Then, the pin 9 is inserted into the slot 12 and the insertion hole 11. Since the limiting sleeve 7 cannot rotate counterclockwise, the pin 9 can also limit the clamping bolt 6 counterclockwise, preventing the clamping bolt 6 from rotating counterclockwise.
[0050] like Figure 3As shown, in this embodiment, the end of the clamping bolt 6 has an arc-shaped structure. It should be noted that an arc-shaped clamping groove 10 can be provided on the side wall of the clamping plate 4. The arc-shaped clamping groove 10 can increase the contact area between the clamping bolt 6 and the clamping plate 4, so that the clamping bolt 6 has a better clamping effect on the clamping plate 4.
[0051] like Figure 4 As shown, in this embodiment, a fixing hole 13 is provided on the side wall of the insertion hole 11, and an installation groove 14 is provided on the side wall of the pin 9. A fixing post 16 that can be inserted into the fixing hole 13 is provided in the installation groove 14. One end of the fixing post 16 extends out of the installation groove 14, and the other end is connected to the installation groove 14 through a spring 15. It should be noted that, in order to prevent the pin 9 from falling out of the insertion hole 11, this solution provides a fixing post 16 and a fixing hole 13. When it is necessary to insert the pin 9 into the insertion hole 11, the worker presses the fixing post 16 into the installation groove 14, and then inserts the pin 9 into the insertion hole 11. When the installation groove 14 and the fixing hole 13 are aligned, the fixing post 16 is inserted into the fixing hole 13 by the elastic force of the spring 15, thereby positioning the pin 9 and preventing the pin 9 from falling out.
[0052] like Figure 4 As shown, in this embodiment, the end of the fixing post 16 extending out of the mounting groove 14 is an arc-shaped structure. It should be noted that the arc-shaped structure allows the fixing post 16 to be automatically pressed into the mounting groove 14 without manual intervention when the pin 9 is inserted into the socket 11. When the pin 9 is inserted into the socket 11, the arc-shaped structure distributes the external force exerted by the socket 11 onto the fixing post 16 along its axial direction, allowing the fixing post 16 to be automatically pressed into the mounting groove 14.
[0053] The working principle of this embodiment is as follows:
[0054] When it is necessary to fix the clamping plate 4 to the rail 1: First, thoroughly grind and remove rust from the rail top and bottom surfaces within a 530mm length range on both sides of the weld. After grinding, place the base plate 2 under the rail, with the two threaded sleeves 5 on both sides of the base plate 2 symmetrically positioned on the left and right sides of the rail 1. Then, place the clamping plate 4 on the left and right sides of the rail 1 and alternately tighten the two left and right clamping bolts 6 to ensure even torque until the clamping bolts 6 firmly clamp the clamping plate 4. Finally, if the insertion hole 11 and the slot 12 are not aligned at this point, the worker can... Rotate the limiting sleeve 7 clockwise until the insertion hole 11 is aligned with the slot 12. Then insert the pin 9 into the slot 12 and the insertion hole 11. When the pin 9 is inserted into the insertion hole 11, the fixing post 16 decomposes the external force from the insertion hole 11 into its axial direction through the arc structure, so that the fixing post 16 can be automatically pressed into the mounting groove 14 to complete the positioning of the pin 9. Since the limiting sleeve 7 cannot rotate in the counterclockwise direction, the pin 9 can also limit the tightening bolt 6 in the counterclockwise direction to prevent the tightening bolt 6 from rotating in the counterclockwise direction.
[0055] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.
[0056] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0057] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A rail reinforcement clamping bolt structure, comprising a threaded sleeve (5) and a clamping bolt (6) screwed to the threaded sleeve (5), characterized in that, It also includes a bolt fixing assembly for fixing the abutment bolt (6) to prevent the abutment bolt (6) from loosening; The bolt fixing assembly includes a limiting sleeve (7) located at the end of the threaded sleeve (5). The limiting sleeve (7) is coaxial with the threaded sleeve (5). A slot (12) is provided through the side wall of the limiting sleeve (7). The slot (12) is arranged along the axial direction of the limiting sleeve (7). The side wall of the clamping bolt (6) is provided with a insertion hole (11) that mates with the slot (12). The clamping bolt (6) is fixed by inserting a pin (9) into the slot (12) and the insertion hole (11).
2. The rail reinforcement bolt structure according to claim 1, characterized in that, The number of slots (12) is multiple, and the multiple slots (12) are equally spaced along the circumference of the limiting sleeve (7).
3. The rail reinforcement bolt structure according to claim 2, characterized in that, The length of the slot (12) is greater than the diameter of the socket (11).
4. The rail reinforcement bolt structure according to claim 1, characterized in that, The limiting sleeve (7) is connected to the threaded sleeve (5) via a one-way bearing (8), and the direction in which the limiting sleeve (7) can rotate is the same as the direction in which the tightening bolt (6) is screwed into the threaded sleeve (5).
5. The rail reinforcement bolt structure according to claim 1, characterized in that, The end of the clamping bolt (6) has an arc-shaped structure.
6. The rail reinforcement bolt structure according to claim 1, characterized in that, The side wall of the insertion hole (11) is provided with a fixing hole (13), and the side wall of the pin (9) is provided with an installation groove (14). The installation groove (14) is provided with a fixing post (16) that can be inserted into the fixing hole (13). One end of the fixing post (16) extends out of the installation groove (14), and the other end is connected to the installation groove (14) by a spring (15).
7. The rail reinforcement bolt structure according to claim 6, characterized in that, The end of the fixed column (16) extending out of the mounting groove (14) has an arc-shaped structure.