Contact rail clamps and contact rail systems

Abstract

The present invention provides a contact rail wire clamp and a contact rail system. The contact rail wire clamp is used to fix the contact rail, and the contact rail wire clamp includes a main body, a clamping part and a locking part. The clamping part is connected to the main body through the locking part. The clamping part is separately formed or the clamping part and the main body are jointly formed to form a chamber with an opening on one side. The shape of the chamber is compatible with the clamped part of the contact rail. Adjusting the locking part can make the inner wall of the chamber contact with the contact rail. In addition, the present application also provides a contact rail system, including a supporting device, a contact rail and the above-mentioned contact rail wire clamp. The split design of the contact rail wire clamp facilitates the installation and disassembly of the contact rail, and the wire clamp can completely restrict the contact rail, reduce the movement of the contact rail during operation, improve the construction accuracy of the contact rail, and greatly reduce the time and workload of debugging. The contact rail system can improve the current delivery quality between the shoe rails.

Description

Technical Field

[0001] The invention relates to the field of urban rail transit contact rail systems, and in particular to a contact rail wire clamp and a contact rail system. Background Art

[0002] In the design of the contact rail system of urban rail transit, the contact rail is an important device for transmitting electrical energy to the electric traction vehicles of the urban rail transit system. Its good installation accuracy is of great significance to ensure the stable operation of the system. During the construction, inspection and maintenance of the contact rail, the contact rail clamp needs to be frequently disassembled and installed. The convenience of disassembly and installation can effectively save construction time and cost.

[0003] In the prior art, the contact rail clamp does not adequately restrict the spatial position of the contact rail. After the contact rail is installed, there is a certain gap between the contact rail and the clamp, and the contact rail can move freely in the clamp, which is not conducive to accurate positioning of the contact rail and increases the difficulty of debugging during the construction, inspection and maintenance of the contact rail. In the operating state, the movement of the contact rail will cause the contact surface between the vehicle current applicator and the contact rail to be unstable, which will deteriorate the current quality of the contact rail system. Summary of the invention

[0004] In view of this, the embodiments of the present application hope to provide a contact rail wire clamp and a contact rail system to solve the problem of movement of the contact rail in the wire clamp.

[0005] To achieve the above-mentioned purpose, one aspect of an embodiment of the present application provides a contact rail wire clamp for fixing the contact rail, the contact rail wire clamp comprising a main body, a clamping part and a locking part; the clamping part is connected to the main body through the locking part, the clamping part is separately formed or the clamping part and the main body are jointly formed to form a chamber with an opening on one side, the shape of the chamber is adapted to the clamped part of the contact rail, and adjusting the locking part can make the inner wall of the chamber contact with the contact rail.

[0006] Furthermore, the contact rail clamp further comprises an elastic member, wherein the elastic member is mounted on the clamping portion, and the force applied by the locking portion acts on the clamping portion through the elastic member.

[0007] Furthermore, a convex rib is provided on one of the cushion block and the fixing block, and a groove matching the convex rib is provided on the other one.

[0008] Furthermore, the contact rail clamp further comprises a fastening portion for mounting the main body, and the fastening portion is configured to be able to adjust the mounting height of the contact rail clamp.

[0009] Furthermore, the locking part includes a locking bolt and a locking nut, a first locking hole is opened on the main body part, and a second locking hole is opened on the clamping part, and the locking bolt is connected to the locking nut through the first locking hole and the second locking hole to lock the main body part and the clamping part.

[0010] Furthermore, there are at least two first locking holes, at least one of which is a waist-shaped hole.

[0011] Another aspect of an embodiment of the present application provides a contact rail system, comprising a support device, a contact rail and any one of the contact rail wire clamps described above, wherein the contact rail is installed on the support device after being fixed by the contact rail wire clamp.

[0012] Furthermore, in the contact rail system, the contact rail wire clamp located in the middle area of ​​the anchor section is configured to completely lock the contact rail, the contact rail wire clamp located in the end area of ​​the anchor section is configured to slide-lock the contact rail, and the contact rail wire clamp located in the area between the middle and end of the anchor section is configured to conditionally lock the contact rail.

[0013] The contact rail wire clamp provided in the embodiment of the present application adopts a split design, which is convenient for the installation and disassembly of the contact rail. The shape of the cavity of the contact rail wire clamp is adapted to the shape of the clamped part of the contact rail. The contact rail is completely fixed after contact through the inner wall of the cavity, which prevents the contact rail from moving in the contact rail wire clamp, improves the installation accuracy of the contact rail, and also improves the debugging efficiency during construction and overhaul and maintenance. In addition, because the contact rail wire clamp has a resistance to the contact rail along the line direction, it prevents the contact rail from expanding and contracting along the line longitudinal direction when the temperature changes, thereby increasing the length of the contact rail anchor section and improving the dynamic relationship and current delivery quality between the shoe rails.

[0014] The contact rail system provided in the embodiment of the present application has the same beneficial effects as the contact rail clamp mentioned above is adopted, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the contact rail clamp in one embodiment of the present application;

[0016] Figure 2 This is a schematic structural diagram of a contact rail system in one embodiment of the present application;

[0017] Figure 3 for Figure 1 Exploded diagram of

[0018] Figure 4 for Figure 1 A schematic diagram of the structure of the main body of FIG.

[0019] Figure 5for Figure 1 A schematic diagram of the structure of the cushion block;

[0020] Figure 6 for Figure 1 A schematic diagram of the structure of the clamping portion in FIG.

[0021] Figure 7 for Figure 1 Schematic diagram of the fixing method of the elastic member on the clamping part.

[0022] Description of Reference Numerals

[0023] 1. Main body 11, first locking hole 13, height adjustment hole

[0024] 2. Contact rail 3. Clamping part 31. Fixing block

[0025] 311, groove 32, pad 321, convex rib

[0026] 34, stopper 35, second locking hole 4, elastic member

[0027] 5. Fastening part 51, fastening bolt 52, fastening nut

[0028] 6. Locking part 61, locking bolt 62, locking nut

[0029] 7. Support device DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of the present application and should not be regarded as an improper limitation on the present application.

[0031] The directional terms in the description of this application are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting this application.

[0032] One aspect of the present application provides a contact rail clamp. Figures 1 to 3 The contact rail wire clamp is used to fix the contact rail 2, and the contact rail wire clamp includes a main body 1, a clamping part 3 and a locking part 6. The clamping part 3 is connected to the main body 1 through the locking part 6, and the clamping part 3 is separately formed or the clamping part 3 and the main body 1 are jointly formed to form a chamber with one side opening, and the shape of the chamber is adapted to the clamped part of the contact rail 2, and the inner wall of the chamber can be made to contact the contact rail 2 by adjusting the locking part 6.

[0033] It should be noted that the chamber in contact with the clamped portion of the contact rail 2 can be formed by the clamping portion 3 alone, without the main body 1, or can be formed by the clamping portion 3 and the main body 1 together. By adjusting the locking portion 6, the inner wall of the chamber can be adjusted to contact the clamped portion of the contact rail 2. It can be understood that the contact between the inner wall of the above-mentioned chamber and the contact rail 2 can be line contact or point contact, or surface contact. Preferably, the inner surface of the enclosed chamber and the outer surface of the clamped portion of the contact rail 2 are completely matched, so that the displacement of the contact rail 2 in the wire clamp can be better limited.

[0034] According to the different locking forces of the locking part 6 on the main body 1 and the clamping part 3, the fixing methods of the contact rail clamp to the contact rail can be divided into full locking, conditional locking and sliding locking. In the full locking method, the displacement of the contact rail 2 in the contact rail clamp is completely restricted; in the sliding locking method, the contact rail 2 can slide freely along the line direction, and the displacement in the direction perpendicular to the line is completely restricted; in the conditional locking method, the contact rail 2 can slide in the contact rail clamp along the line direction according to preset conditions, and the displacement in the direction perpendicular to the line is completely restricted. In this way, different locking methods of the contact rail clamp to the contact rail 2 can be set according to specific construction needs.

[0035] In one embodiment, taking the fixing of the contact rail 2 by the contact rail wire clamp as an example, since the anchor section of the contact rail 2 is relatively long, during the installation and construction of the contact rail 2, a contact rail wire clamp is required to fix it at every distance, and during the inspection and maintenance of the contact rail 2, the contact rail wire clamp also needs to be frequently disassembled and installed. Therefore, the split contact rail wire clamp provided by the present application has a simple structure and is easy to install, which can effectively improve the work efficiency of construction and maintenance.

[0036] Since the cavity of the contact rail clamp limits the displacement of the contact rail 2 in the contact rail clamp, there is no space for the contact rail 2 to deform and displace in the contact rail clamp, which improves the installation accuracy of the contact rail 2 and extends the allowable length of the anchor section of the contact rail 2, reduces the number of adjustment devices such as expansion joints, reduces the installation cost, and improves the dynamic relationship and current transfer quality between the shoe rails.

[0037] It is understandable that, in one embodiment, the main body 1 can be an L-shaped plate or a T-shaped plate, etc., as long as it meets the above functions. The locking portion 6 can be a threaded connector, a pin connector, a rivet connector, etc., which can lock the main body 1 and the clamping portion 3 and is easy to disassemble.

[0038] It should be noted that by adjusting the shape and installation position of the main body 1, the upper flow granting mode, the lower flow granting mode and the side flow granting mode of the contact rail system can be realized respectively, such as Figure 2An example of current supply to the lower part of a busbar system is shown.

[0039] In one embodiment, see Figures 1 to 3 The contact rail clamp of the present application further comprises an elastic member 4 , which is mounted on the clamping portion 3 , and the force applied by the locking portion 6 acts on the clamping portion 3 through the elastic member 4 .

[0040] The purpose of setting the elastic member 4 is to disperse the locking force of the locking portion 6 on the clamping portion 3. The structure of the elastic member 4 can be a flat plate or a ring-shaped structure formed by winding a steel wire, such as Figure 7 The elastic member 4 shown is formed by winding steel wire in an "M" shape. The elastic member 4 of this shape can not only disperse the locking force of the locking portion 6 on the clamping portion 3, but also provide a clamping force perpendicular to the line direction and the direction of the above-mentioned locking force to the clamping portion 3. In this way, the locking force of the locking portion 6 can be dispersed to prevent stress concentration on the clamping portion 3, and the contact rail 2 can be further clamped.

[0041] In one embodiment, see Figure 7 The clamping part 3 is provided with a stopper 34, which is configured to limit the elastic member 4 to prevent the elastic member 4 from moving or slipping on the clamping part 3. It is understandable that the shape, position and structure of the stopper 34 need to be specifically designed according to the shape and size of the elastic member 4. Figure 7 As shown, the stoppers 34 are arranged in the direction along the line and in the direction perpendicular to the line, which can provide displacement restrictions for the elastic member 4 in two directions, which is beneficial to the locking of the contact rail 2 and thus to the stable operation of the contact rail system.

[0042] In one embodiment, see Figures 1 to 3 The clamping portion 3 of the contact rail clamp of the present application includes a fixing block 31 and a cushion block 32. The cushion block 32 is located in the space formed by the fixing block 31 and the main body 1, and the side wall of the cushion block 32 forms at least a portion of the inner wall of the chamber in contact with the contact rail 2.

[0043] It is understandable that the clamping portion 3 may only have a fixing block 31, and the fixing block 31 is arranged to form a chamber with one side opening, or the fixing block 31 and the main body 1 are arranged to form a chamber with one side opening. In order to make the contact rail clamp have a better positioning effect on the contact rail 2, the material of the part in contact with the contact rail 2 can be changed to change the resistance to the contact rail 2, thereby adding a cushion block 32. In this case, the part in direct contact with the contact rail 2 is the cushion block 32, and the contact can be line contact, point contact or surface contact. Preferably, the surface of the chamber formed by the cushion block 2 is completely matched with the surface of the clamped part of the contact rail 2.

[0044] Preferably, the main body 1 and the clamping part 3 are made of the same material. Insulating materials such as glass fiber reinforced plastics and high-strength resins can be used, and conductive materials such as steel or alloys can also be used. If conductive materials are used, an insulator needs to be provided between the contact rail clamp and the supporting device 7 to prevent leakage.

[0045] In one embodiment, see Figures 5 to 7 In the contact rail clamp of the present application, a convex rib is provided on one of the pad 32 and the fixed block 31, and a groove matching the convex rib is provided on the other. For example, a convex rib 321 is provided on the pad 32, and a groove 311 matching the convex rib 321 is provided on the fixed block 31, and the number of the convex rib 321 is the same as the number of the groove 331. The cooperation between the convex rib 321 and the groove 331 can increase the resistance between the pad 32 and the fixed block 31, and prevent the pad 32 from slipping during operation.

[0046] Furthermore, the material friction coefficient of the pad 32 and the locking force applied by the locking portion 6 are selected and configured to be combined according to the preset resistance value required for the contact rail along the line direction. It can be understood that the change of the locking force applied by the locking portion 6 and the change of the material friction coefficient of the pad 32 will change the resistance generated by the contact rail clamp to the contact rail 2 along the line direction, and the material of the pad 32 can be selected according to the size of the required preset resistance value, such as nylon, steel plate, glass fiber, etc.

[0047] In one embodiment, see Figures 2-3 The contact rail clamp of the present application further comprises a fastening portion 5 for mounting the main body 1, and the fastening portion 5 is configured to be able to adjust the installation height of the contact rail clamp. For example, refer to Figure 3 The fastening part 5 includes a fastening bolt 51 and a fastening nut 52. The main body 1 is provided with a long strip height adjustment hole 13. The support device 7 is provided with a round hole. The fastening bolt 51 passes through the round hole and the height adjustment hole 13. By adjusting the position of the fastening bolt 51 in the height adjustment hole 13, the installation height of the contact rail wire clamp can be adjusted. Alternatively, the support device 7 is provided with a long strip hole (not shown) and the main body 1 is provided with a round hole, and the installation height of the contact rail wire clamp can also be adjusted.

[0048] The fastening part 5 can be a device such as a threaded connector, a pin connector, a rivet connector, etc. that can fix the main body 1 on the supporting device 7.

[0049] In one embodiment, see Figures 1-2The locking part 6 includes a locking bolt 61 and a locking nut 62. The main body 1 is provided with a first locking hole 11, and the clamping part 3 is provided with a second locking hole 12. The locking bolt 61 is connected to the locking nut 62 through the first locking hole 11 and the second locking hole 35 to lock the main body 1 and the clamping part 3. The bolt and nut connection method is more conducive to the disassembly and installation work in daily maintenance, greatly improving the work efficiency. And by adjusting the pre-tightening force between the locking bolt 61 and the locking nut 62, the fixing method of the contact rail wire clamp to the contact rail 2 is changed, which is more convenient for daily operation.

[0050] In one embodiment, see Figures 3-4 There are at least two first locking holes 11, at least one of which is a waist-shaped hole. In this way, when there is a processing error, it can be ensured that the locking portion 6 passes through the second locking hole 35 and then penetrates into the first locking hole 11, so as to fasten the main body 1 and the clamping portion 3.

[0051] Another aspect of the embodiment of the present application provides a contact rail system, comprising a support device 7, a contact rail 2 and any one of the contact rail wire clamps in the above embodiments, wherein the contact rail 2 is fixed by the contact rail wire clamp and then installed on the support device 7. Since any one of the above contact rail wire clamps is adopted, the same technical effect as the above contact rail wire clamp is achieved, which will not be described in detail here.

[0052] It should be noted that, regarding the installation of the support device 7 and the contact rail clamp, since the installation height of the contact rail clamp needs to be adjusted, a long strip hole can be opened in the vertical direction, for example, a long strip hole in the vertical direction is opened on the main body 1, and a round hole is opened on the support device 7; or a long strip hole in the vertical direction is opened on the support device 7, and a round hole is opened on the main body 1. In this way, the installation height of the contact rail clamp can be adjusted by adjusting the installation position of the fastening part 5 in the long strip hole.

[0053] In the prior art, the contact rail clamp fixes the contact rail 2 in a sliding manner, and the contact rail clamp has no resistance to the contact rail 2 along the line direction. When the temperature of the contact rail 2 changes, it will expand and contract along the line direction. At this time, it is necessary to set expansion joints and other components to adjust, which limits the length of the anchor section and further deteriorates the dynamic relationship between the shoe rails and the current delivery quality. In the embodiment of the present application, a complete locking method is adopted in the middle part of the contact rail 2, and its displacement and deformation are completely restricted, so that the number of expansion joints used can be reduced. In the area located at both ends of the contact rail 2, since the contact rail 2 here has a certain bending deformation, if the complete locking method is adopted to forcibly restrict its displacement and deformation, a large stress will be generated inside the contact rail 2, and the strength requirements of the contact rail clamp are also high. The sliding locking method is adopted here, which allows the contact rail 2 to produce a moderate displacement and release its internal stress. In addition, the two ends of the contact rail 2 are originally to be provided with expansion joints. Therefore, the use of sliding locking methods at both ends of the contact rail 2 does not affect the number of expansion joints used. It is understandable that when the anchor section is long, a conditional locking method can be used between the middle area and the two ends of the contact rail to allow a transition process for stress release of the contact rail 2. When the anchor section is short, a conditional locking method or a sliding locking method can be used without completely locking the contact rail 2.

[0054] In one embodiment, in the contact rail system of the present application, when the anchor section of the contact rail 2 is relatively long, the contact rail wire clamp located in the middle of the anchor section adopts a completely locked mode, at which time the displacement of the contact rail 2 in the running direction along the line is completely restricted, reducing the displacement and deformation of the contact rail 2. The contact rail wire clamps located at both ends of the anchor section near the expansion joint or the end elbow adopt a sliding locking mode to allow the contact rail 2 to be displaced in the contact rail wire clamp. The remaining transition sections adopt a conditional locking mode to allow the contact rail 2 to be moderately displaced in the contact rail wire clamp to meet the preset conditions. When the anchor section of the contact rail 2 is relatively short, the contact rail wire clamp adopts conditional locking or sliding locking to mainly control the installation accuracy of the contact rail, and does not completely lock the contact rail. According to the different lengths of the anchor section of the contact rail 2, different locking modes are adopted, which can not only improve the problem of the contact rail 2 moving in the contact rail wire clamp, but also improve the installation accuracy and working reliability of the contact rail 2.

[0055] The various embodiments / implementations provided in this application can be combined with each other without causing any contradiction.

[0056] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A contact rail clamp for fixing a contact rail (2), characterized in that: The contact rail clamp comprises a main body (1), a clamping portion (3) and a locking portion (6); The clamping portion (3) is connected to the main body (1) via the locking portion (6); the clamping portion (3) is formed alone or together with the main body (1) to form a chamber with one side open; the shape of the chamber is adapted to the clamped portion of the contact rail (2); the locking portion (6) can be adjusted to allow the inner wall of the chamber to contact the contact rail (2); The clamping portion (3) comprises a fixing block (31) and a cushion block (32), wherein the cushion block (32) is located in a space formed by the fixing block (31) and the main body (1), and a side wall of the cushion block (32) forms at least a portion of an inner wall of the chamber in contact with the contact rail (2); The cushion block (32) is provided with a convex rib (321), and the fixing block (31) is provided with a groove (311) matching the convex rib (321); The fixing block (31) and the cushion block (32) are provided on opposite sides of the chamber, and a first bending portion is formed at one end of the fixing blocks (31) on both sides that are close to each other, and the bending direction of the first bending portion is away from the chamber, and a groove (311) of the fixing block (31) on each side extends from the upper end of the fixing block (311) to the corresponding first bending portion, and a second bending portion is formed at one end of the cushion blocks (32) on both sides that are close to each other, and the bending direction of the second bending portion is away from the chamber, and a convex rib (321) of the cushion block (32) on each side protrudes from the cushion block (32) in a direction away from the cushion block (32) on the other side, and the convex rib (321) is provided at the upper end of the cushion block (32) and the second bending portion, and the convex rib (321) and the groove (311) extend at least partially in the up-down direction, and the second bending portions on both sides are located between the first bending portions on both sides; The convex rib (321) is located below the top surface of the cushion block (32), and the groove (311) is located below the top surface of the fixing block (31); The contact rail clamp located in the middle area of ​​the anchor section in the contact rail system is configured to completely lock the contact rail (2); The main body (1) and the clamping part (3) are made of insulating material.

2. The contact rail clamp according to claim 1, characterized in that: The contact rail clamp also includes an elastic member (4), which is mounted on the clamping portion (3), and the force applied by the locking portion (6) acts on the clamping portion through the elastic member (4).

3. The contact rail clamp according to claim 2, characterized in that: A stopper (34) is provided on the clamping portion (3), and the stopper (34) is configured to limit the position of the elastic member (4).

4. The contact rail clamp according to claim 1, characterized in that: The material friction coefficient of the pad (32) and the locking force applied by the locking portion (6) are selected and configured to be combined according to a preset resistance value required for the contact rail (2) along the line direction.

5. The contact rail clamp according to claim 1, characterized in that: The contact rail clamp further comprises a fastening portion (5) for mounting the main body portion (1), and the fastening portion (5) is configured to be able to adjust the mounting height of the contact rail clamp.

6. The contact rail clamp according to any one of claims 1 to 5, characterized in that: The locking portion (6) comprises a locking bolt (61) and a locking nut (62); a first locking hole (11) is provided on the main body (1), and a second locking hole (35) is provided on the clamping portion (3); the locking bolt (61) is connected to the locking nut (62) via the first locking hole (11) and the second locking hole (35) to lock the main body (1) and the clamping portion (3).

7. The contact rail clamp according to claim 6, characterized in that: There are at least two first locking holes (11), at least one of which is a waist-shaped hole.

8. A contact rail system, characterized in that: It comprises a supporting device (7), a contact rail (2) and a contact rail wire clamp as claimed in any one of claims 1 to 7, wherein the contact rail (2) is installed on the supporting device (7) after being fixed by the contact rail wire clamp.

9. The contact rail system according to claim 8, characterized in that The contact rail clamp located in the end area of ​​the anchor section is configured to adopt a sliding locking method for the contact rail (2), and the contact rail clamp located in the area between the middle and the end of the anchor section is configured to adopt a conditional locking method for the contact rail (2).

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