Large-resistance clamping assembly for railway steel rail joint

Abstract

The utility model discloses a railway steel rail joint large-resistance clamping assembly which comprises two clamping plates, the end portion of a first steel rail is aligned with the end portion of a second steel rail, each clamping plate comprises a tightening plate body, the tightening plate body is arched back to the first steel rail or the second steel rail, and the upper end and the lower end of the tightening plate body are respectively provided with an upper abutting portion and a lower abutting portion. The upper abutting portion and the lower abutting portion extend to the two ends of the tightening plate bodies in the length direction of the tightening plate bodies, a plurality of fastening bolts penetrate through the two tightening plate bodies and penetrate through the corresponding first steel rails or the corresponding second steel rails, locking nuts are connected to the fastening bolts in a threaded mode, and the locking nuts are locked to the outer side faces of the corresponding tightening plate bodies. The requirement that the steel rail joint bears large resistance is met, the situation that the friction force between the clamping plates and the steel rail joint is reduced is avoided, it is guaranteed that the fastening bolts do not bear or bear a small amount of shearing force, and the situation that the fastening bolts are broken is avoided. The utility model is suitable for the technical field of steel rail joint clamps.

Description

Technical Field

[0001] The utility model belongs to the technical field of connecting two steel rails, and specifically relates to a high-resistance clamping component for a railway steel rail joint. Background Art

[0002] At present, when two rails are connected, two clamping plates are generally set on both sides of the two aligned rails, and then multiple bolts are used to clamp the two rails on the rails, so that the two rails are connected and tightened, and the two rails are mainly connected by the friction between the clamping plates. However, in some special railway sections, the external force on the rails is relatively large, and the strength of the existing clamping plates and bolts is insufficient. Under heavy loads and large resistance, the predetermined friction force cannot meet the requirements, resulting in a reduction in the connection effect of the clamping on the rails; and most of the bolts connecting the clamping plates are 6, which reduces the overall shear resistance. In this way, the bolts will break under the action of shear force, causing the connection between the rails to come into contact, which may cause a serious train derailment accident. Utility Model Content

[0003] The utility model provides a railway rail joint large resistance clamping assembly, which is used to meet the requirement that the rail joint can withstand large resistance, avoid the situation where the friction between the clamping plate and the rail joint is reduced, ensure that the fastening bolts are not subjected to or are subjected to a small amount of shear force, and prevent the fastening bolts from breaking.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A high-resistance clamping assembly for a railway rail joint comprises two clamping plates symmetrically arranged on both sides of a connection between a first rail and a second rail, the ends of the first rail and the second rail are aligned, and a rail gap is formed between the first rail and the second rail, the clamping plate comprises a tightening plate body with an arched cross-section, the tightening plate body is arched away from the first rail or the second rail, an upper top connecting portion and a lower top connecting portion are respectively constructed at the upper and lower ends of the tightening plate body, the upper top connecting portion and the lower top connecting portion both extend along the length direction of the tightening plate body to the two ends of the tightening plate body, a plurality of fastening bolts are arranged at intervals along the length direction of the tightening plate body, and each of the fastening bolts passes through the two tightening plates and the corresponding first rail or the second rail, a locking nut is threadedly connected to the fastening bolt, and the locking nut is locked on the outer side of the corresponding tightening plate body.

[0006] Furthermore, the first rail and the second rail have the same structure. The first rail includes a rail head, a rail waist and a rail bottom which are arranged in sequence from top to bottom. The lower surface of the rail head is a first wearing surface, the upper surface of the rail bottom is a second wearing surface, the upper supporting surface of the upper top connecting portion is tightly abutted against the first wearing surface, and the lower supporting surface of the lower top connecting portion is tightly abutted against the second wearing surface.

[0007] Furthermore, a friction layer is constructed on the first and second grinding surfaces; the friction layer includes a diamond layer attached to the first and second grinding surfaces, or the friction layer includes mesh grooves opened on the first and second grinding surfaces.

[0008] Furthermore, each of the fastening bolts vertically passes through the rail waist and the two clamping plates, and the bolt heads of adjacent fastening bolts are alternately arranged on both sides of the first rail and the second rail.

[0009] Furthermore, the fastening bolts are divided into three groups, namely the first fastening group, the second fastening group and the third fastening group; each fastening bolt of the first fastening group vertically passes through the rail waist and the two clamping plates, and each fastening bolt of the second fastening group and the third fastening group obliquely passes through the rail waist and the two clamping plates, each fastening bolt of the first fastening group, each fastening bolt of the second fastening group and each fastening bolt of the third fastening group are alternately arranged along the length direction of the clamping plate, and the two fastening bolts located on both sides of the rail gap are both two fastening bolts of the first fastening group; the fastening bolts of the third fastening group adjacent to the fastening bolts of the second fastening group are symmetrically arranged, and the axis lines of the two intersect.

[0010] Furthermore, the number of fastening bolts of the first fastening group connected to the first rail is at least 2, and the number of fastening bolts of the first fastening group connected to the second rail is at least 2; the number of fastening bolts of the second fastening group connected to the first rail is the same as the number of fastening bolts of the third fastening group, and the number of fastening bolts of the second fastening group connected to the second rail is the same as the number of fastening bolts of the third fastening group.

[0011] Furthermore, a first oblique gasket and a second oblique gasket are respectively mounted on both ends of each fastening bolt of the second fastening group and the third fastening group, one end of the first oblique gasket abuts against the end face of the bolt head, and the other end of the first oblique gasket abuts against the corresponding tightening plate body; one end of the second oblique gasket abuts against the corresponding tightening plate body, and the other end of the second oblique gasket abuts against the locking nut.

[0012] Furthermore, a plurality of oblique square holes are provided on the tightening plate body at intervals along its length direction, a first assembly block is constructed on the first oblique gasket, and a second assembly block is constructed on the second oblique gasket, the first assembly block and the second assembly block are respectively assembled in the corresponding oblique square holes, and the fastening bolts pass through the first assembly block and the second assembly block.

[0013] Furthermore, the first inclined gasket and the first assembly block are integrally formed.

[0014] Due to the adoption of the above structure, the technical progress achieved by the utility model compared with the prior art is that the clamping plate of the utility model adopts an arched tightening plate body to replace the existing non-curved straight plate body, so that under the action of the fastening bolts and the locking nut, the two clamping plates are tightly clamped at the connection between the first rail and the second rail. Since the two tightening plates have a certain ability to bend outward after being tightened, the locking nut is always in a pressed state, thereby preventing the locking nut from loosening. Moreover, the components for connecting the first rail and the second rail are mainly the upper top connection part and the lower top connection part of the clamping plate, which are tightly abutted against the corresponding components of the first rail and the second rail respectively, and at the same time, under the action of the tightening plate body that is bent outward, the upper top connection part and the lower top connection part always maintain a certain pre-pressure to expand on the first rail and the second rail, so that the friction between the clamping plate and the first rail and the second rail is maintained within a predetermined range, so as to adapt to the working conditions of large resistance. Therefore, most of the external force is directly transmitted to the ground, and the fastening bolts are subjected to very small shear force. In summary, it can be seen that the utility model can meet the requirements of the rail joint to withstand large resistance, avoid the situation where the friction between the clamping plate and the rail joint is reduced, ensure that the fastening bolts will not be subjected to or are subjected to a small amount of shear force, and prevent the fastening bolts from breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0016] In the attached picture:

[0017] Figure 1 This is a schematic diagram of the structure of the embodiment of the utility model clamped on both sides of the connection between the first rail and the second rail;

[0018] Figure 2 This is a front view of the structure of the embodiment of the utility model clamped on both sides of the connection between the first rail and the second rail;

[0019] Figure 3 This is a structural front view of the first rail of the utility model embodiment;

[0020] Figure 4 This is a schematic diagram of the structure of the clamping plate of an embodiment of the utility model;

[0021] Figure 5 It is a schematic diagram of the structure of an embodiment of the utility model connected to a first rail and a second rail through a first fastening group, a second fastening group and a third fastening group;

[0022] Figure 6 for Figure 5A top view of a partially cutaway portion of the structure shown;

[0023] Figure 7 It is a partial structural schematic diagram of the clamping plate of the embodiment of the utility model;

[0024] Figure 8 It is a schematic diagram of the partial structure of the clamping plate at another angle of the embodiment of the utility model;

[0025] Fig. 9 It is a schematic diagram of the structure after the fastening bolt, the locking nut, the first inclined gasket and the second inclined gasket are disassembled according to an embodiment of the utility model.

[0026] Labeled parts: 1-first rail, 101-rail head, 102-first grinding surface, 103-rail waist, 104-rail bottom, 105-second grinding surface, 2-second rail, 3-clamping plate, 301-tightening plate body, 302-upper top connection, 303-upper supporting surface, 304-lower top connection, 305-lower supporting surface, 306-emery layer, 307-net-like grooves, 308-straight round hole, 309-oblique square hole, 4-fastening bolt, 5-bolt head, 6-locking nut, 7-first oblique gasket, 8-second oblique gasket, 9-second assembly block, 10-first assembly block. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0028] The utility model discloses a high resistance clamping assembly for a railway rail joint, such as Figure 1-9As shown, it includes two clamping plates 3 symmetrically arranged on both sides of the connection between the first rail 1 and the second rail 2, the ends of the first rail 1 and the second rail 2 are aligned, and a rail gap is formed between the first rail 1 and the second rail 2. The clamping plate 3 of the utility model includes a tightening plate body 301, an upper top connection portion 302 and a lower top connection portion 304, wherein the cross section of the tightening plate body 301 is in an arched shape, the tightening plate body 301 is arched away from the first rail 1 or the second rail 2, the upper top connection portion 302 and the lower top connection portion 304 are respectively constructed at the upper and lower ends of the tightening plate body 301, and the upper top connection portion 302, the lower top connection portion 304 and the tightening plate body 301 are an integrally formed structure. The upper top connection portion 302 extends to the two ends of the tightening plate body 301 along the length direction of the tightening plate body 301, and the lower top connection portion 304 extends to the two ends of the tightening plate body 301 along the length direction of the tightening plate body 301. The utility model uses a plurality of bolts to connect the first rail 1, the second rail 2 and the two clamping plates 3. Specifically, the fastening bolts 4 are arranged at intervals along the length direction of the tightening plate body 301, and each fastening bolt 4 passes through the two tightening plate bodies 301 and also passes through the corresponding first rail 1 or second rail 2. The locking nut 6 threadedly connected to each fastening bolt 4 is locked on the outer side of the corresponding tightening plate body 301. The working principle and advantage of the utility model are: the clamping plate 3 of the utility model adopts an arched tightening plate body 301 to replace the existing non-curved straight plate body, so that under the action of the fastening bolts 4 and the locking nuts 6, the two clamping plates 3 are tightly clamped at the connection between the first rail 1 and the second rail 2. Because the two tightening plates 301 have a certain ability to bend outward after being tightened, the locking nuts 6 are always in a state of being pressed, thereby preventing the locking nuts 6 from loosening. Moreover, the components for connecting the first rail 1 and the second rail 2 are mainly the upper top connection part 302 and the lower top connection part 304 of the clamping plate 3, and the upper top connection part 302 and the lower top connection part 304 are respectively tightly abutted against the corresponding components of the first rail 1 and the second rail 2, and at the same time, under the action of the tightening plate 301 that is bent outward, the upper top connection part 302 and the lower top connection part 304 always maintain a certain pre-pressure expansion on the first rail 1 and the second rail 2, so that the friction between the clamping plate 3 and the first rail 1 and the second rail 2 is maintained within a predetermined range, so as to adapt to the working conditions of large resistance, so that most of the external force is directly transmitted to the ground, and the fastening bolt 4 is subjected to very small shear force. In summary, it can be seen that the utility model can meet the requirements of the rail joint to withstand large resistance, avoid the situation where the friction between the clamping plate 3 and the rail joint is reduced, ensure that the fastening bolt 4 will not be subjected to or is subjected to a small amount of shear force, and prevent the fastening bolt 4 from breaking.

[0029] As a preferred embodiment of the present invention, Figure 2-4As shown, the structures of the first rail 1 and the second rail 2 are the same. Taking the first rail 1 as an example, the first rail 1 includes a rail head 101, a rail waist 103 and a rail bottom 104 arranged in sequence from top to bottom, wherein the lower surface of the rail head 101 is the first wear surface 102, and the upper surface of the rail bottom 104 is the second wear surface 105. In this embodiment, the upper support surface 303 of the upper top connection part 302 is tightly against the first wear surface 102, and the lower support surface 305 of the lower top connection part 304 is tightly against the second wear surface 105. In this embodiment, after the two tightening plates 301 are tightened by the fastening bolts 4, external force acts on the connected first rail 1 and the second rail 2. The friction between the upper support surface 303 and the first wear surface 102, and the friction between the lower support surface 305 and the second wear surface 105 can ensure that the first rail 1 and the second rail 2 always maintain synchronous action, and avoid the situation where the two occur asynchronous action and cause the fastening bolts 4 to break. At the same time, the first steel rail 1, the second steel rail 2, the fastening bolts 4 and the two clamping plates 3 form a complete structure, thereby ensuring the safety of the train operation.

[0030] As a preferred embodiment of the present invention, in order to improve the friction between the upper support surface 303 and the first wear surface 102, and the friction between the lower support surface 305 and the second wear surface 105, the measures taken are as follows: Figure 7 , 8 As shown, a friction layer is constructed on the first wear surface 102 and the second wear surface 105; the friction layer is divided into two forms, the first form of the friction layer includes a diamond layer 306, and the diamond layer 306 is attached to the first wear surface 102 and the second wear surface 105. The second form of the friction layer includes a network of grooves 307, and the network of grooves 307 is opened on the first wear surface 102 and the second wear surface 105, so that the roughness of the first wear surface 102 and the second wear surface 105 becomes larger.

[0031] As a preferred embodiment of the present invention, Figure 1 As shown, in this embodiment, a plurality of vertical circular holes 308 are respectively opened on the first rail 1, the second rail 2 and the two clamping plates 3, and each fastening bolt 4 passes through the corresponding vertical circular hole 308, so that the fastening bolt 4 vertically passes through the rail waist 103 and the two clamping plates 3, and the bolt heads 5 of adjacent fastening bolts 4 are alternately arranged on both sides of the first rail 1 and the second rail 2. In this way, when subjected to external force, the shear force on the fastening bolt 4 is relatively large. During long-term use, damage to the fastening bolt 4 is inevitable. Therefore, in order to further improve the shear resistance of the fastening bolt 4, this embodiment can adopt the following method: Figure 5 , 6In the connection method shown, specifically, the fastening bolts 4 are divided into three groups, namely the first fastening group, the second fastening group and the third fastening group. Each fastening bolt 4 of the first fastening group vertically passes through the rail waist 103 and the two clamping plates 3, and each fastening bolt 4 of the second fastening group and the third fastening group obliquely passes through the rail waist 103 and the two clamping plates 3. Each fastening bolt 4 of the first fastening group, each fastening bolt 4 of the second fastening group and each fastening bolt 4 of the third fastening group are alternately arranged along the length direction of the clamping plate 3, and the two fastening bolts 4 located on both sides of the rail seam are both two fastening bolts 4 of the first fastening group; the fastening bolts 4 of the second fastening group and the fastening bolts 4 of the third fastening group adjacent to each other are symmetrically arranged, and the axis lines of the two intersect. In this way, when the fastening bolts 4 share the external force, since the fastening bolts 4 of the second fastening group and the third fastening group are arranged in an inclined manner, when the fastening bolts 4 are subjected to force, the external force can be divided into the axial component of the fastening bolts 4 and the radial component of the fastening bolts 4, and the shear force is mainly reflected in the radial component. Due to the inclined symmetrical arrangement, the radial components of force between the adjacent fastening bolts 4 of the second fastening group and the third fastening group offset each other to a part, thereby reducing the shear force of the fastening bolts 4 and preventing the fastening bolts 4 from breaking.

[0032] As a preferred embodiment of the utility model, the number of the fastening bolts 4 of the first fastening group connected to the first rail 1 is at least 2, and the number of the fastening bolts 4 of the first fastening group connected to the second rail 2 is at least 2, ensuring that the connection position of the first rail 1 and the second rail 2 will not be deflected. The number of the fastening bolts 4 of the second fastening group connected to the first rail 1 is the same as the number of the fastening bolts 4 of the third fastening group, and the number of the fastening bolts 4 of the second fastening group connected to the second rail 2 is the same as the number of the fastening bolts 4 of the third fastening group; in this way, it is ensured that the shearing forces on the fastening bolts 4 on the first rail 1 can offset each other, and the shearing forces on the fastening bolts 4 on the second rail 2 can offset each other, thereby improving the life of the fastening bolts 4.

[0033] As a preferred embodiment of the present invention, Figure 5-7 As shown, the first inclined pad and the second inclined pad are respectively set at both ends of each fastening bolt 4 of the second fastening group and the third fastening group. Among them, one end of the first inclined pad 7 abuts against the end face of the bolt head 5, and the other end of the first inclined pad 7 abuts against the corresponding tightening plate body 301; one end of the second inclined pad 8 abuts against the corresponding tightening plate body 301, and the other end of the second inclined pad 8 abuts against the locking nut 6. This embodiment uses the first inclined pad and the second inclined pad to realize the connection between the inclined fastening bolt 4 and the two clamping plates 3, so that the two clamping plates 3 can be tightly connected with the first rail 1 and the second rail 2 to avoid looseness.

[0034] As a preferred embodiment of the present invention, Figure 7-9 As shown, a plurality of oblique square holes 309 are provided on the tightening plate 301 along its length direction, a first assembly block 10 is constructed on the first oblique gasket 7, and a second assembly block 9 is constructed on the second oblique gasket 8, wherein the first assembly block 10 and the second assembly block 9 are respectively assembled in the corresponding oblique square holes 309, and the fastening bolt 4 passes through the first assembly block 10 and the second assembly block 9. In this way, the contact area between the fastening bolt 4 and the two tightening plate bodies 301 is increased, and the shear resistance of the fastening bolt 4 is further improved. The first oblique gasket 7 and the first assembly block 10 of this embodiment are integrally formed, and the first oblique gasket 7 and the first assembly block 10 are generally fixed by welding.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the scope of protection of the claims of the utility model.

Claims

1. A high resistance clamping assembly for a railway rail joint, comprising two clamping plates symmetrically arranged on both sides of a connection between a first rail and a second rail, the ends of the first rail and the second rail are aligned, and a rail gap is formed between the first rail and the second rail, characterized in that: The clamping plate includes a tightening plate body with an arched cross-section, the tightening plate body is arched away from the first rail or the second rail, and an upper top connecting portion and a lower top connecting portion are respectively constructed at the upper and lower ends of the tightening plate body, and the upper top connecting portion and the lower top connecting portion both extend along the length direction of the tightening plate body to the two ends of the tightening plate body, and a plurality of fastening bolts are arranged at intervals along the length direction of the tightening plate body, and each of the fastening bolts passes through the two tightening plate bodies and the corresponding first rail or the second rail, and a locking nut is threadedly connected to the fastening bolt, and the locking nut is locked on the outer side surface of the corresponding tightening plate body.

2. A railway rail joint high resistance clamping assembly according to claim 1, characterized in that: The first rail and the second rail have the same structure. The first rail includes a rail head, a rail waist and a rail bottom which are arranged in sequence from top to bottom. The lower surface of the rail head is the first wearing surface, the upper surface of the rail bottom is the second wearing surface, the upper supporting surface of the upper top connecting part is tightly abutted against the first wearing surface, and the lower supporting surface of the lower top connecting part is tightly abutted against the second wearing surface.

3. A railway rail joint high resistance clamping assembly according to claim 2, characterized in that: A friction layer is constructed on the first and second grinding surfaces; the friction layer includes a diamond layer attached to the first and second grinding surfaces, or the friction layer includes mesh grooves opened on the first and second grinding surfaces.

4. A railway rail joint high resistance clamping assembly according to claim 2, characterized in that: Each of the fastening bolts vertically passes through the rail waist and the two clamping plates, and the bolt heads of adjacent fastening bolts are alternately arranged on both sides of the first steel rail and the second steel rail.

5. The railway rail joint high resistance clamping assembly according to claim 2, characterized in that: The fastening bolts are divided into three groups, namely the first fastening group, the second fastening group and the third fastening group; each fastening bolt of the first fastening group vertically passes through the rail waist and the two clamping plates, and each fastening bolt of the second fastening group and the third fastening group obliquely passes through the rail waist and the two clamping plates. Each fastening bolt of the first fastening group, each fastening bolt of the second fastening group and each fastening bolt of the third fastening group are alternately arranged along the length direction of the clamping plate, and the two fastening bolts located on both sides of the rail gap are both two fastening bolts of the first fastening group; the fastening bolts of the third fastening group adjacent to the fastening bolts of the second fastening group are symmetrically arranged, and the axis line connecting the two intersects.

6. A railway rail joint high resistance clamping assembly according to claim 5, characterized in that: The number of fastening bolts of the first fastening group connected to the first rail is at least 2, and the number of fastening bolts of the first fastening group connected to the second rail is at least 2; The number of the fastening bolts of the second fastening group connected to the first rail is the same as the number of the fastening bolts of the third fastening group, and the number of the fastening bolts of the second fastening group connected to the second rail is the same as the number of the fastening bolts of the third fastening group.

7. A railway rail joint high resistance clamping assembly according to claim 5, characterized in that: A first oblique pad and a second oblique pad are respectively mounted on both ends of each fastening bolt of the second fastening group and the third fastening group, one end of the first oblique pad abuts against the end face of the bolt head, and the other end of the first oblique pad abuts against the corresponding tightening plate; one end of the second oblique pad abuts against the corresponding tightening plate, and the other end of the second oblique pad abuts against the locking nut.

8. A railway rail joint high resistance clamping assembly according to claim 7, characterized in that: A plurality of oblique square holes are provided on the tightening plate body at intervals along its length direction, a first assembly block is constructed on the first oblique pad block, and a second assembly block is constructed on the second oblique pad block, the first assembly block and the second assembly block are respectively assembled in the corresponding oblique square holes, and the fastening bolts pass through the first assembly block and the second assembly block.

9. The railway rail joint high resistance clamping assembly according to claim 7, characterized in that: The first oblique pad block and the first assembly block are integrally formed.

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