Carrier cable clamp

Abstract

The invention discloses a carrier cable clamp which comprises a clamping part connected with a carrier cable and a hanging part connected with a dropper, the hanging part is provided with a mounting hole for the dropper to penetrate through, a wedge block capable of tightly wedging the dropper in the mounting hole is arranged in the mounting hole, and an elastic piece for driving the wedge block to keep a tightly wedged state is further arranged in the mounting hole; according to the carrier cable clamp with the structure, the dropper is wedged tightly through the wedge block, so that the dropper is convenient to mount and adjust in length, and stepless adjustment of the length of the dropper is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of catenary, in particular to a messenger cable clamp. BACKGROUND

[0002] In the rail transit catenary system, the precise positioning of the contact wire geometric parameters is controlled by the dropper set between the messenger cable and the contact wire, and the messenger cable clamp fixes the dropper to the messenger cable. In the traditional way, the dropper is connected to the messenger cable clamp through a heart-shaped retainer ring, which is inconvenient to install and adjust. SUMMARY

[0003] In order to solve the problems in the prior art, the present application provides a messenger cable clamp with convenient dropper installation and adjustment. The technical scheme adopted by the present application is as follows:

[0004] The messenger cable clamp comprises a clamping part connected to the messenger cable and a suspension part connected to the dropper. The suspension part is provided with a mounting hole through which the dropper passes. A wedge block is arranged in the mounting hole to wedge the dropper in the mounting hole. An elastic member is further arranged to keep the wedge block in the wedged state.

[0005] Further, the messenger cable clamp further comprises an unlocking member which can drive the wedge block to overcome the elastic force of the elastic member to release the wedged state.

[0006] Further, the unlocking member is arranged separately from the wedge block.

[0007] Further, the unlocking member comprises a baffle and a connecting rod. The baffle is arranged in the mounting hole and can contact the wedge block. A part of the connecting rod is arranged in the mounting hole and a part of the connecting rod extends out of the suspension part.

[0008] Further, the connecting rod is in the form of a tube through which the dropper passes, and a window is formed in the connecting rod to allow the wedge block to contact the dropper.

[0009] Further, the elastic member is arranged between the baffle and the suspension part, or between the suspension part and the connecting rod, and can drive the baffle to exert a wedging force on the wedge block.

[0010] Further, the unlocking member is arranged on the wedge block and partially extends out of the suspension part.

[0011] The messenger cable clamp with the above structure realizes the wedging of the dropper through the wedge block, facilitates the installation and length adjustment of the dropper, and realizes the endless adjustment of the length of the dropper. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 Figure 1 is a structural schematic diagram of the messenger cable clamp according to the present application;

[0013] Fig. 2 Figure 2 is a sectional view of the messenger cable clamp according to the present application;

[0014] Fig. 3 Exploded view of embodiment 1 of the wire clamp;

[0015] Fig. 4 This is a schematic diagram of the structure of embodiment 2 of the wire clamp;

[0016] Fig. 5 This is a cross-sectional view of embodiment 2 of the wire clamp;

[0017] Fig. 6 This is an exploded view of embodiment 2 of the wire clamp. Detailed Implementation

[0018] As a component that connects the dropper to the catenary, the catenary clamp mainly consists of two parts: a clamping part that fixes the catenary clamp to the catenary, and a suspension part that connects and fixes the dropper.

[0019] To better understand the concept of this invention, further detailed descriptions are provided below in conjunction with the accompanying drawings and specific embodiments.

[0020] like Figs. 1 to 3 The catenary clamp shown includes a clamping part and a suspension part, wherein the clamping part is used to fix the entire clamp to the catenary, and the suspension part is used to connect the dropper.

[0021] In this embodiment, the clamping part includes a hook 5-1 and a pair of claws 5-2. A torsion spring 5-3 is provided on the pair of claws 5-2 to drive the claws 5-2 to rotate. Under the action of the torsion spring 5-3, the claws 5-2 form an upward support for the bottom of the catenary A, and cooperate with the hook 5-1 to form a clamping state on the catenary, thereby fixing the clamping part to the catenary. When it is necessary to adjust the position of the dropper wire clamp on the catenary, the claws 5-2 are rotated by external force to release the clamping state on the catenary, so that the wire clamp can be moved on the catenary. When the wire clamp is installed on the catenary, the hook 5-1 needs to be removed first. After the wire clamp is placed in the appropriate position, the hook 5-1 is installed in place and the hook 5-1 is suspended on the catenary.

[0022] A mounting hole 1 is provided in the suspension part. The suspension string passes through the mounting hole 1 and connects to the suspension part. A wedge 2 is provided in the mounting hole 1. The wedge 2 can wedge the suspension string B placed in the mounting hole 1 to fix the suspension string. Specifically, in this solution, the wedge 2 is wedge-shaped, and the mounting hole 1 has an inclined surface. When the wedge 2 moves downward in the direction shown in the figure, it can form a wedge-tight state on the suspension string.

[0023] In order to keep the wedge block 2 tightly wedged against the suspension string, the wire clamp is provided with an elastic element 3 to generate a downward elastic force on the wedge block 2 in the direction shown in the figure, so that it weds the suspension string tightly.

[0024] In order to overcome the elastic force exerted by the elastic member 3 on the wedge 2 and thus release the wedging state, the wire clamp is further provided with an unlocking member 4, which in this embodiment includes a connecting rod 4-2 and a baffle 4-1. The baffle 4-1 is arranged in the mounting hole 1 and can contact the top surface of the wedge 2. The connecting rod 4-2 is tubular and can allow the hanging string to pass through. A part of the connecting rod 4-2 is arranged in the mounting hole 1, and the other part extends out of the suspension part. The part of the connecting rod 4-2 extending out of the suspension part facilitates the operation of the unlocking member 4. In order to ensure that the wedge 2 effectively wedges the hanging string, a window 4-3 is arranged on the connecting rod 4-2 to allow the hanging string to contact the wedge, thereby achieving wedging of the hanging string. The elastic member 3 is arranged between the suspension part and the end of the connecting rod 4-2 extending out of the suspension part, so that the elastic member 3 can maintain a downward force on the connecting rod 4-2 in the direction shown in the figure, driving the baffle 4-1 arranged in the mounting hole 1 to form a downward pressure on the top surface of the wedge 2, and thus maintaining the wedging state of the wedge 2 on the hanging string. When it is necessary to adjust the length of the hanging string, the wedging state is released by the unlocking member 4. The unlocking member 4 is pushed to overcome the elastic force of the elastic member 3, so that the baffle 4-1 arranged in the mounting hole 1 is separated from the wedge, and then the wedge 2 is released from the wedging state of the hanging string by pulling the hanging string, so that the length of the hanging string can be adjusted.

[0025] As shown in the wire clamp embodiment 2, the same includes a clamping part for fixing the wire clamp to the load-bearing cable and a suspension part for connecting the hanging string. Figs. 4 to 6

[0026] The clamping part in this embodiment adopts a relatively conventional boltless wire clamp structure, which includes a main wire clamp 6-1 and a secondary wire clamp 6-2. After the main wire clamp 6-1 and the secondary wire clamp 6-2 are combined by insertion, the load-bearing cable is clamped to fix the wire clamp on the load-bearing cable.

[0027] The suspension part is provided with a mounting hole 1 for the hanging string to pass through. The wedge 2 is arranged in the mounting hole 1 to wedge the hanging string in the mounting hole 1. The elastic member 3 arranged between the wire clamp and the wedge 2 maintains the wedging state of the wedge 2. Unlike the first embodiment, the unlocking member 4 for releasing the wedging state is directly arranged on the wedge 2 and extends out of the suspension part. By operating the unlocking member 4, the wedge 2 can be driven to overcome the elastic force of the elastic member and release the wedging state of the wedge on the hanging string.

[0028] The above two embodiments only list two types of clamping part structures. Those skilled in the art can replace the above two clamping structures with other clamping structures from existing load-bearing cable wire clamps, which should be regarded as equivalent technical features.

[0029] ​For the suspension part structure, the unlocking piece 4 given in Embodiment 1 is to indirectly release the wedging force of the elastic piece 3 on the wedge block, and the unlocking piece 4 given in Embodiment 2 is to directly release the wedging force of the elastic piece 3. Based on the above two structure forms, those skilled in the art can also make adjustments to the structure, such as making the connecting rod 4-2 into a solid rod, setting the connecting rod 4-2 through a guide groove, or canceling the connecting rod and adopting a structure similar to Embodiment 2 to make the baffle 4-1 extend out of the suspension part from the side, and the setting position of the elastic piece 3 can also be adjusted together to between the baffle 4-1 and the wire clamp, and the elastic piece 3 directly applies elastic force to the baffle 4-1. Or set the unlocking piece 4 extending from the side in Embodiment 2 into a rod shape extending from the bottom of the wire clamp and push the wedge block 2 to move upward from the bottom. The above structure changes do not substantially change the technical features, and all use the unlocking piece 4 to release the wedging force of the elastic piece on the wedge block 2, thereby eliminating the wedging state of the wedge block 2 on the hanging string.

Claims

1. A messenger cable clamp comprising a clamping portion for connection to a messenger cable and a suspension portion for connection to a flying line, characterised in that: The hanging part is provided with a mounting hole (1) for the passing of the hanging string, a wedge (2) is arranged in the mounting hole (1) to wedge the hanging string in the mounting hole (1), and an elastic member (3) is arranged to drive the wedge (2) to keep the wedging state.

2. The messenger wire grip of claim 1, wherein: An unlocking member (4) is further arranged to drive the wedge (2) to release the wedging state against the elastic force of the elastic member (3).

3. The messenger wire grip of claim 2, wherein: The unlocking member (4) is arranged separately from the wedge (2).

4. The messenger wire grip of claim 3, wherein: The unlocking member (4) comprises a baffle (4-1) and a connecting rod (4-2), the baffle (4-1) is arranged in the mounting hole (1) to contact the wedge (2), and a part of the connecting rod (4-2) is arranged in the mounting hole (1) and a part of the connecting rod (4-2) extends out of the hanging part.

5. The messenger wire grip of claim 4, wherein: The connecting rod (4-2) is in a tubular shape for the passing of the hanging string, and a window (4-3) is arranged on the connecting rod (4-2) to enable the wedge to contact the hanging string.

6. The messenger wire grip of claim 4, wherein: The elastic member (3) is arranged between the baffle (4-1) and the hanging part or between the hanging part and the connecting rod (4-2) to drive the baffle (4-1) to apply the wedging force to the wedge (2).

7. The messenger wire grip of claim 2, wherein: The unlocking member (4) is arranged on the wedge (2) and partially extends out of the hanging part.

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