Railway bridge upper guard rail small-resistance joint clamping assembly
By designing the clamping plate structure of the bow-shaped tightening waist body, the problem that the existing rail connection method does not have the ability to telescope, and the rail can generate expansion and contraction after being subjected to stress, eliminate external forces, and protect rails and bridges.
Patent Information
- Application Number
- CN202421108732.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The connection method of the rail guard on existing railway bridges does not have the ability to telescopic, which makes it difficult to eliminate external forces when under pressure, which may cause rails or bridges to bear large external forces.
Design a small resistance joint clamping assembly of railway bridge guard rail, adopts an arcuate clamping plate designed with a waist-shaped tensioning structure. Through the structure of fastening bolts and locking nuts, the clamping plate has an inward direction when under stress. The bending ability reduces the pressure on the guardrail and improves the expansion and contraction ability of the guardrail.
It effectively reduces the resistance of the rail guard joints, so that the rail guard can generate a certain amount of expansion and contraction after being subjected to stress, eliminates some external forces, and avoids excessive external forces from rails or bridges.
Smart Images
Figure CN222525063U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of a guardrail connecting structure on a railway bridge, in particular to a small resistance joint clamping component for a guardrail on a railway bridge. Background Art
[0002] When laying railways on bridges, in order to prevent trains from derailing and rushing off the railway, it is necessary to install guardrails between two guardrails. Existing guardrails generally adopt a segmented connection method, that is, guardrail shuttles are installed at the front section of the bridge and the rear section of the bridge, respectively, and a V-shaped rail with a gradually expanding width is installed at the second section of the guardrail shuttle, and a parallel rail is installed at the rear section (third section) of the V-shaped rail. The sections are clamped and connected by clamps at the close points of each other. Moreover, the length of straight rails is usually 12.5m and 25m. When installing guardrails on a 100-meter bridge, multiple straight rails need to be connected. In the guardrail connection, it is necessary to reduce the resistance of the connection between the guardrails so that the guardrail joints have a certain degree of expansion and contraction ability to avoid the situation where the external force cannot be released and most of it is transmitted to the rails or bridges. However, the connection method of the existing guardrail joints is the same as that of the rail joints, so that they do not have expansion and contraction capabilities, and it is difficult for the two connected guardrails to have relative displacement under force, and the ability to eliminate external forces is poor. Utility Model Content
[0003] The utility model provides a small resistance joint clamping component for guardrails on a railway bridge, which is used for providing small resistance for two guardrail joints, so that the two connected guardrails can generate a certain amount of expansion and contraction after being stressed, thereby eliminating part of the external force and preventing the rails or the bridge from being subjected to large external force.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0005] A low-resistance joint clamping assembly for a guardrail on a railway bridge comprises two clamping plates symmetrically arranged on both sides of the guardrail joint position, the clamping plates comprising a tensioning waist with an arched cross-section, the tensioning waist arched toward the side of the guardrail, an upper top connecting body and a lower top connecting body are respectively constructed at the upper and lower ends of the tensioning waist, the upper top connecting body and the lower top connecting body both extend along the length direction of the tensioning waist to the two ends of the tensioning waist, a plurality of fastening bolts are arranged at intervals along the length direction of the tensioning waist, and each of the fastening bolts passes through the two tensioning waists and the corresponding guardrails, a locking nut is threadedly connected to the fastening bolt, and the locking nut is locked on the outer side of the corresponding tensioning waist.
[0006] Furthermore, the guardrail joint is formed at the joint of two aligned guardrails, and a rail gap is formed between the two guardrails; the guardrail includes a rail head, a rail waist and a rail bottom arranged in sequence from top to bottom, the lower surface of the rail head is the first supporting surface, the upper surface of the rail bottom is the second supporting surface, the upper connecting surface of the upper top connecting body is tightly abutted against the first supporting surface, and the lower connecting surface of the lower top connecting body is tightly abutted against the second supporting surface.
[0007] Furthermore, a plurality of first strip grooves are constructed side by side on the upper connecting surface, and each of the first strip grooves extends to the two ends of the upper connecting surface along the length direction of the upper top connecting body; a plurality of second strip grooves are constructed side by side on the lower connecting surface, and each of the second strip grooves extends to the two ends of the lower connecting surface along the length direction of the lower top connecting body.
[0008] Furthermore, a plurality of first spherical protrusions are constructed on the upper connecting surface, and each of the first spherical protrusions is in contact with the first receiving surface; a plurality of second spherical protrusions are constructed on the lower connecting surface, and each of the second spherical protrusions is in contact with the second receiving surface.
[0009] Furthermore, a plurality of first balls are constructed on the upper connecting surface, each of the first balls is rotatably connected to the upper top supporting body, and each of the first balls is in contact with the first receiving surface; a plurality of second balls are constructed on the lower connecting surface, each of the second balls is rotatably connected to the lower top supporting body, and each of the second balls is in contact with the second receiving surface.
[0010] Furthermore, a first nylon pad is provided in the upper top connecting body, and the first nylon pad extends along the length direction of the upper top connecting body to the two ends of the upper top connecting body, and the lower end of each of the first balls is pressed on the upper end surface of the first nylon pad; a second nylon pad is provided in the lower top connecting body, and the second nylon pad extends along the length direction of the lower top connecting body to the two ends of the lower top connecting body, and the upper end of each of the second balls is pressed on the lower end surface of the second nylon pad.
[0011] Furthermore, a plurality of circular connection holes are respectively opened at the ends of the two guard rails close to each other, and a plurality of strip holes are respectively opened at the corresponding positions of the two tension waists. These strip holes are arranged one-to-one with the connection holes, and the strip holes extend along the length direction of the tension waist.
[0012] Furthermore, there are two connection holes on each guardrail, and the distance between the two connection holes is 15-22 cm, and the distance between the connection hole close to the end of the guardrail and the end of the guardrail is 8-12 cm.
[0013] Due to the adoption of the above structure, the technical progress achieved by the present invention compared with the prior art is that the clamping plate of the present invention adopts a bow-shaped tension waist design. After the two tension waists are tightened, they have a certain ability to bend inward, so that when the upper top contact body and the lower top contact body of the clamping plate are in contact with the guardrail, the upper top contact body and the lower top contact body respectively have a certain pre-tension under the action of the tension waist. When the rail and / or the guardrail are subjected to force, the external force is transmitted to the tension waist, so that it has a tendency to continue to bend. In this way, the above pre-tension is increased, and the pressure of the upper top contact body and the lower top contact body on the guardrail is reduced, thereby reducing the resistance between the guardrail and the clamping plate, so that the guardrail can have a certain expansion and contraction ability to eliminate the external force transmitted. In summary, the present invention can provide a smaller resistance for the joints of the two guardrails, so that the two consecutive guardrails have a certain expansion and contraction after being subjected to force, thereby eliminating part of the external force and preventing the rail or bridge from being subjected to a large external force. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] 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.
[0015] In the attached picture:
[0016] Figure 1 This is a schematic diagram of the structure of the embodiment of the utility model clamped on both sides of the guard rail joint;
[0017] Figure 2 This is a front view of the structure of the embodiment of the utility model clamped on both sides of the guard rail joint;
[0018] Figure 3 This is a schematic diagram of the structure of the clamping plate of an embodiment of the utility model;
[0019] Figure 4 This is a structural front view of the guard rail of the utility model embodiment;
[0020] Figure 5 It is a schematic diagram of the structure of the embodiment of the utility model after the two guard rails are separated;
[0021] Figure 6 It is a partial structural schematic diagram of a first strip-shaped groove constructed on the upper connecting surface of the clamping plate according to an embodiment of the utility model;
[0022] Figure 7 It is a partial structural schematic diagram of a second strip-shaped groove constructed on the lower connecting surface of the clamping plate according to an embodiment of the utility model;
[0023] Figure 8 It is a partial structural schematic diagram of a first spherical protrusion constructed on the upper connecting surface of the clamping plate of the embodiment of the utility model;
[0024] Fig. 9 This is a partial structural diagram of a second spherical protrusion constructed on the lower connecting surface of the clamping plate according to an embodiment of the utility model;
[0025] Fig.10 It is a partial structural schematic diagram of the first ball structure on the upper connecting surface of the clamping plate according to the embodiment of the utility model;
[0026] Fig.11 It is a partial structural schematic diagram of the second ball structure on the lower connecting surface of the clamping plate according to an embodiment of the utility model.
[0027] Labeled parts: 1-guard rail, 101-rail waist, 102-rail head, 103-rail bottom, 104-first supporting surface, 105-second supporting surface, 2-rail gap, 3-clamping plate, 301-tensioning waist, 302-upper top connecting body, 303-lower top connecting body, 304-upper connecting surface, 305-lower connecting surface, 306-bar hole, 307-first bar groove, 308-second bar groove, 309-first spherical protrusion, 310-second spherical protrusion, 311-first nylon pad, 312-first ball, 313-second nylon pad, 314-second ball, 4-fastening bolt, 5-locking nut. DETAILED DESCRIPTION
[0028] 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.
[0029] The utility model discloses a small resistance joint clamping assembly for a guardrail on a railway bridge, such as Figure 1-2As shown, it includes two clamping plates 3 symmetrically arranged on both sides of the guardrail joint position. The clamping plate 3 includes a tension waist 301 with an arched cross-section, and the tension waist 301 is arched toward the side of the guardrail 1. An upper top connecting body 302 and a lower top connecting body 303 are respectively constructed at the upper and lower ends of the tension waist 301. The upper top connecting body 302 extends to the two ends of the tension waist 301 along the length direction of the tension waist 301, and the lower top connecting body 303 also extends to the two ends of the tension waist 301 along the length direction of the tension waist 301. The utility model uses a plurality of fastening bolts 4 to connect the two clamping plates 3 with the ends of the two guardrails 1. Specifically, these fastening bolts 4 are arranged at intervals along the length direction of the tension waist 301, and each fastening bolt 4 passes through the two tension waists 301 and passes through the corresponding guardrail 1. A locking nut 5 is threadedly connected to the fastening bolt 4, and the locking nut 5 is locked on the outer surface of the corresponding tension waist 301. The working principle and advantages of the utility model are: the clamping plate 3 of the utility model adopts a bow-shaped tension waist 301 design. After the two tension waists 301 are tightened, they have a certain ability to bend inward, so that when the upper top body 302 and the lower top body 303 of the clamping plate 3 abut against the guard rail 1, the upper top body 302 and the lower top body 303 respectively have a certain pre-tension under the action of the tension waist 301. When the rail and / or the guard rail 1 is stressed, the external force is transmitted to the tension waist 301, so that it has a tendency to continue to bend. In this way, the above-mentioned pre-tension is increased, and the pressure of the upper top body 302 and the lower top body 303 on the guard rail 1 is reduced, thereby reducing the resistance between the guard rail 1 and the clamping plate 3, so that the guard rail 1 can have a certain telescopic ability to eliminate the external force transmitted. In summary, the utility model can provide a smaller resistance for the joints of the two guard rails, so that the two connected guard rails 1 can produce a certain amount of expansion and contraction after being subjected to force, thereby eliminating part of the external force and preventing the rails or bridges from being subjected to larger external forces.
[0030] As a preferred embodiment of the present invention, Figure 1-4 As shown, the guardrail joint is formed at the joint of two aligned guardrails 1, and a rail seam 2 is formed at the gap between the two guardrails 1 at their respective ends. The guardrail 1 of this embodiment comprises a rail head 102, a rail waist 101 and a rail bottom 103 arranged in sequence from top to bottom, wherein the lower surface of the rail head 102 is a first receiving surface 104, and the upper surface of the rail bottom 103 is a second receiving surface 105. When the fastening bolts 4 and the locking nuts 5 tighten the two tension waists 301 on both sides of the guardrail 1, the upper connecting surface 304 of the upper top connecting body 302 is tightly against the first receiving surface 104, and the lower connecting surface 305 of the lower top connecting body 303 is tightly against the second receiving surface 105. The resistance between the guardrail 1 and the clamping plate 3 is mainly reflected in the friction between the upper connecting surface 304 and the first receiving surface 104, and the friction between the lower connecting surface 305 and the second receiving surface 105.
[0031] As a preferred embodiment of the present invention, in order to reduce the resistance of the clamping plate 3 to the guard rail 1, multiple implementations can be adopted. The first implementation is as follows: Figure 6 , 7 As shown, a plurality of first strip grooves 307 are arranged side by side on the upper connecting surface 304, and each first strip groove 307 extends to both ends of the upper connecting surface 304 along the length direction of the upper top body 302. A plurality of second strip grooves 308 are arranged side by side on the lower connecting surface 305, and each second strip groove 308 extends to both ends of the lower connecting surface 305 along the length direction of the lower top body 303. In this embodiment, since the first strip grooves 307 and the second strip grooves 308 are respectively provided on the upper connecting surface 304 and the lower connecting surface 305, the contact areas of the upper connecting surface 304 and the lower connecting surface 305 with the first receiving surface 104 and the second receiving surface 105 are reduced respectively, and when the clamping plate 3 has a tendency to move or moves along the length direction of the guardrail 1, the friction force (resistance) is reduced. When the clamping plate 3 is subjected to an external force vertically along the guardrail 1, convex patterns are formed between adjacent first strip grooves 307, and convex patterns are also formed between adjacent second strip grooves 308. When the convex patterns move laterally with the clamping plate 3, the convex patterns can effectively block the movement trend, thereby avoiding the situation where the two guardrails 1 are staggered. The second implementation method is as follows: Figure 8 , 9 As shown, a plurality of first spherical protrusions 309 are constructed on the upper connecting surface 304, and each first spherical protrusion 309 is in contact with the first receiving surface 104. A plurality of second spherical protrusions 310 are constructed on the lower connecting surface 305, and each second spherical protrusion 310 is in contact with the second receiving surface 105. In this embodiment, the first spherical protrusion 309 and the second spherical protrusion 310 are in contact with the first receiving surface 104 and the second receiving surface 105 respectively, so that the contact area is reduced, and during relative movement, the surfaces of the first spherical protrusion 309 and the second spherical protrusion 310 are spherical, with less resistance, which facilitates the relative movement of the clamping plate 3 and the guardrail 1. The third implementation method is as follows: Fig.10 , 11As shown, a plurality of first balls 312 are constructed on the upper connecting surface 304, each of which is rotatably connected to the upper top body 302, and each of which is in contact with the first receiving surface 104. A plurality of second balls 314 are constructed on the lower connecting surface 305, each of which is rotatably connected to the lower top body 303, and each of which is in contact with the second receiving surface 105. In this embodiment, the first balls 312 and the second balls 314 are respectively in contact with the first receiving surface 104 and the second receiving surface 105, so that the contact area is reduced, and during relative movement, the surfaces of the first balls 312 and the second balls 314 are spherical, with less resistance, which facilitates the relative movement of the clamping plate 3 and the guardrail 1, and during the relative movement, the first balls 312 and the second balls 314 rotate, further reducing the friction. In this embodiment, a first nylon pad 311 is provided in the upper apex body 302, and the first nylon pad 311 extends to both ends of the upper apex body 302 along the length direction of the upper apex body 302, and the lower end of each first rolling ball 312 is pressed on the upper end surface of the first nylon pad 311. A second nylon pad 313 is provided in the lower apex body 303, and the second nylon pad 313 extends to both ends of the lower apex body 303 along the length direction of the lower apex body 303, and the upper end of each second rolling ball 314 is pressed on the lower end surface of the second nylon pad 313. In this embodiment, since the first nylon pad 311 and the second nylon pad 313 are provided, the first ball 312 and the second ball 314 can adapt to different pressures from the first supporting surface 104 and the second supporting surface 105, that is, under different pressures, the first ball 312 and the second ball 314 can elastically extend into the upper connecting surface 304 and the lower connecting surface 305 to different depths, and ensure that the first ball 312 and the second ball 314 can roll smoothly.
[0032] As a preferred embodiment of the present invention, Figure 5 As shown, a plurality of circular connection holes are respectively provided at the ends of the two guard rails 1 close to each other, and a plurality of strip holes 306 are respectively provided at the corresponding positions of the two tension waists 301. These strip holes 306 are arranged in one-to-one correspondence with the connection holes, and the strip holes 306 extend along the length direction of the tension waist 301. In this embodiment, due to the arrangement of the strip holes 306, when the clamping plate 3 and the guard rail 1 move relative to each other, the fastening bolts 4 can have a certain displacement in the strip holes 306, thereby preventing the fastening bolts 4 from being damaged by a large shear force.
[0033] As a preferred embodiment of the utility model, there are two connection holes on each guardrail 1, and the distance between the two connection holes is 15-22 cm, and the distance between the connection hole near the end of the guardrail 1 and the end of the guardrail 1 is 8-12 cm.
[0034] 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 low-resistance joint clamping assembly for a guardrail on a railway bridge, characterized in that: It includes two clamping plates symmetrically arranged on both sides of the guardrail joint position, the clamping plates include a tensioning waist with an arched cross-section, the tensioning waist is arched toward the side of the guardrail, and an upper top connecting body and a lower top connecting body are respectively constructed at the upper and lower ends of the tensioning waist, and the upper top connecting body and the lower top connecting body both extend along the length direction of the tensioning waist to the two ends of the tensioning waist, and a plurality of fastening bolts are arranged at intervals along the length direction of the tensioning waist, and each of the fastening bolts passes through the two tensioning waists and the corresponding guardrails, and a locking nut is threadedly connected to the fastening bolt, and the locking nut is locked on the outer side of the corresponding tensioning waist.
2. The low-resistance joint clamping assembly for guardrail on a railway bridge according to claim 1, characterized in that: The guard rail joint is formed at the joint of two aligned guard rails, and a rail gap is formed between the two guard rails; the guard rail includes a rail head, a rail waist and a rail bottom arranged in sequence from top to bottom, the lower surface of the rail head is the first receiving surface, the upper surface of the rail bottom is the second receiving surface, the upper connecting surface of the upper top connecting body is tightly abutted against the first receiving surface, and the lower connecting surface of the lower top connecting body is tightly abutted against the second receiving surface.
3. The low-resistance joint clamping assembly for guardrail on a railway bridge according to claim 2, characterized in that: A plurality of first strip grooves are arranged side by side on the upper connecting surface, and each of the first strip grooves extends to both ends of the upper connecting surface along the length direction of the upper top connecting body; a plurality of second strip grooves are arranged side by side on the lower connecting surface, and each of the second strip grooves extends to both ends of the lower connecting surface along the length direction of the lower top connecting body.
4. The low-resistance joint clamping assembly for guardrail on a railway bridge according to claim 2, characterized in that: A plurality of first spherical protrusions are constructed on the upper connecting surface, and each of the first spherical protrusions is in contact with the first receiving surface; a plurality of second spherical protrusions are constructed on the lower connecting surface, and each of the second spherical protrusions is in contact with the second receiving surface.
5. The low-resistance joint clamping assembly for guardrail on a railway bridge according to claim 2, characterized in that: A plurality of first balls are constructed on the upper connecting surface, each of which is rotatably connected to the upper top supporting body and contacts the first receiving surface; a plurality of second balls are constructed on the lower connecting surface, each of which is rotatably connected to the lower top supporting body and contacts the second receiving surface.
6. A low-resistance joint clamping assembly for guardrails on railway bridges according to claim 5, characterized in that: A first nylon pad is provided in the upper top connecting body, and the first nylon pad extends along the length direction of the upper top connecting body to the two ends of the upper top connecting body, and the lower end of each of the first balls is pressed on the upper end surface of the first nylon pad; a second nylon pad is provided in the lower top connecting body, and the second nylon pad extends along the length direction of the lower top connecting body to the two ends of the lower top connecting body, and the upper end of each of the second balls is pressed on the lower end surface of the second nylon pad.
7. The low-resistance joint clamping assembly for guardrail on a railway bridge according to claim 2, characterized in that: A plurality of circular connection holes are respectively opened at the ends of the two guard rails close to each other, and a plurality of strip holes are respectively opened at the corresponding positions of the two tension waists. These strip holes are arranged one by one corresponding to the connection holes, and the strip holes extend along the length direction of the tension waist.
8. The low-resistance joint clamping assembly for guardrails on railway bridges according to claim 7, characterized in that: There are two connection holes on each guardrail, and the distance between the two connection holes is 15-22 cm. The distance between the connection hole close to the end of the guardrail and the end of the guardrail is 8-12 cm.