Terminal anchoring wire clamp

Abstract

The utility model discloses a terminal anchoring wire clamp which comprises a main terminal anchoring wire clamp and an auxiliary terminal anchoring wire clamp. The auxiliary terminal anchoring wire clamp is hinged to the main terminal anchoring wire clamp through a main hinge shaft. The auxiliary terminal anchoring wire clamp comprises an auxiliary wire clamp seat, one or more pairs of clamping rings used for supporting a pre-twisted strain wire and the pre-twisted strain wire, the clamping rings and the auxiliary wire clamp seat are symmetrically arranged with the central axis of the main cable as the axis, the clamping rings and the auxiliary wire clamp seat are hinged through clamping ring pin shafts, and the clamping ring pin shafts of the clamping rings are parallel to a main hinge shaft; the center axis of the clamping ring part of the clamping ring is perpendicular to the main hinge shaft. According to the terminal anchoring wire clamp provided by the utility model, the clamping ring is arranged on the auxiliary terminal anchoring wire clamp, so that the pre-twisted strain wire can be provided with a columnar pre-tightening section with higher strength; therefore, the firmness of the auxiliary terminal anchoring wire clamp to the main terminal anchoring wire clamp is improved; the load of the main terminal anchoring wire clamp is reduced; the safety coefficient of the product is improved; and the service life of the product is prolonged.

Description

Technical Field

[0001] The utility model relates to a backup tension wire clamp used for erecting cables, through which the cable end is connected with an electric wire tower or an electric wire pole. Background Art

[0002] like Figure 1 As shown, in the prior art, the terminal anchoring wire clamp is composed of a joint 1, a middle pin shaft 2, a connecting seat plate 3, a nut sleeve 4 and a hollow screw 5 connected in series; wherein the hollow screw 5 is fixedly connected with the nut sleeve 4 through the nut sleeve 4; the hollow screw 5 is provided with a conical inner cavity; the main cable 6 is fixedly connected with the hollow screw 5 through a conical sleeve (not shown in the figure).

[0003] As the operating mileage of electrified railways continues to increase, the safety performance requirements for contact networks continue to increase.

[0004] In recent years, extreme weather conditions such as freezing, thunderstorms, snow haze, strong winds and hail have occurred in many places. The continuous "wind dance" phenomenon has caused a certain degree of damage to the contact network equipment, especially the terminal anchor wire clamps of the load-bearing cables and contact wires. Long-term "wind dance" will cause wire fatigue; especially at the bearing terminal, it is very easy to cause derailment and outlet wear and breakage, causing certain troubles and risks to operations.

[0005] In addition, some existing lines have been in operation for a long time, and the load-bearing cables and contact wires often fall out of the slots, causing the contact network to loosen and fall, which in turn causes the train to scrape and hit the bow, and in serious cases, causes the train to stop running. Better terminal anchor clamps are needed to fix the main cables. Utility Model Content

[0006] The purpose of the utility model is to provide a terminal anchoring wire clamp which has a novel and unique structure, is easy to use, and can improve the safety factor of the product; the specific technical scheme is:

[0007] A terminal anchoring wire clamp comprises a main terminal anchoring wire clamp and an auxiliary terminal anchoring wire clamp; the auxiliary terminal anchoring wire clamp is hinged to the main terminal anchoring wire clamp via a main hinge axis; the auxiliary terminal anchoring wire clamp comprises an auxiliary wire clamp seat and a pair or more pairs of clamping rings and pre-twisted tension wires symmetrically arranged with the main cable center axis as the axis for supporting the pre-twisted tension wire, the clamping ring is hinged to the auxiliary wire clamp seat via a clamping ring pin, the clamping ring pins of the clamping ring are parallel to the main hinge axis, and the center axis of the clamping ring part of the clamping ring is perpendicular to the main hinge axis.

[0008] Furthermore, the middle section of the pre-twisted tension wire is a columnar pre-tensioning section.

[0009] Furthermore, the length of the columnar pre-tightening section is greater than 30 mm.

[0010] Furthermore, an observation hole is provided at the position of the auxiliary wire clamp seat corresponding to the hollow screw.

[0011] The terminal anchoring wire clamp of the utility model is provided with a clamping ring on the auxiliary terminal anchoring wire clamp, so that the pre-twisted tension wire can be provided with a columnar pre-tightening section with higher strength; thereby improving the firmness of the auxiliary terminal anchoring wire clamp to the main terminal anchoring wire clamp; reducing the load of the main terminal anchoring wire clamp; improving the safety factor of the product; and extending the service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a terminal anchoring wire clamp in the prior art;

[0013] Figure 2 This is a schematic diagram of the structure of the terminal anchoring wire clamp of the utility model;

[0014] Figure 3 This is a schematic diagram of the connection structure of the terminal anchoring wire clamp of the utility model.

[0015] In the figure: 1. joint; 2. main hinge shaft; 3. connecting seat plate; 4. nut sleeve; 5. hollow screw; 6. main cable; 7. observation window; 8. auxiliary wire clamp seat; 81. clamp ring; 811. clamp ring part; 9. pre-twisted tension wire; 91. inner layer auxiliary cable; 92. outer layer auxiliary cable; 10. clamp ring pin. DETAILED DESCRIPTION

[0016] The present invention is described in more detail below using embodiments. The present invention can be embodied in a variety of different forms and should not be construed as being limited to the exemplary embodiments described herein.

[0017] For ease of description, spatially relative terms such as "upper", "lower", "left", "right", etc. may be used herein to describe the relationship of one element or feature shown in the figure to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the elements described as being "below" other elements or features will be positioned "above" other elements or features. Therefore, the exemplary term "lower" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here can be interpreted accordingly.

[0018] like Figure 2 , Figure 3 As shown, the terminal anchoring wire clamp in the embodiment includes a main terminal anchoring wire clamp and an auxiliary terminal anchoring wire clamp; the main terminal anchoring wire clamp can be Figure 1structure, or other forms of terminal anchoring wire clamps in the prior art. The auxiliary terminal anchoring wire clamp and the main terminal anchoring wire clamp can be hinged with the original main hinge axis 2; the tension of the main cable 6 is shared by the pre-twisted tension wires 9 arranged at both ends of the auxiliary terminal anchoring wire clamp. The auxiliary terminal anchoring wire clamp includes an auxiliary wire clamp seat 8, a clamp ring 81 and a pre-twisted tension wire 9. The clamp ring 81 and the pre-twisted tension wire 9 used to support the pre-twisted tension wire can be one pair; or two pairs, or more pairs; preferably, they are arranged symmetrically with the center axis of the main cable as the axis. The clamp ring is hinged to the auxiliary wire clamp seat through a clamp ring pin 10, and the clamp ring pin 10 of the clamp ring 81 is parallel to the main hinge axis, and the center axis of the clamp ring part 811 of the clamp ring is perpendicular to the main hinge axis 2. The central axis of the clamping ring 811 is perpendicular to the main hinge axis 2, which facilitates the pre-twisted tension wire 9 to pass through the clamping ring 811 and to be more closely in contact with the clamping ring 811 after bending. Of the pre-twisted tension wires 9 at both ends, the pre-twisted tension wire 9 at one end is used as an inner auxiliary cable 91, which is rolled outside the main cable 6; the pre-twisted tension wire 9 at the other end is used as an outer auxiliary cable 92, which is rolled outside the inner auxiliary cable 91; two layers of pre-twisted tension wires 9 provide greater tension for the main cable 6.

[0019] In order to improve the strength of the pre-twisted tension wire 9, the part of the pre-twisted tension wire 9 that contacts the clamping ring part 811 can also be called the middle section; the middle section can be processed into a columnar pre-tightening section during the pre-twisted wire manufacturing process, that is, multiple strands of pre-twisted wire form a columnar spiral in the middle section.

[0020] The length of the columnar pre-tightening section should be greater than 30 mm so as to fit more closely with the contact surface of the clamp ring portion 811. The length of the columnar pre-tightening section is preferably extended to a position closer to the main cable 6, so as to provide greater auxiliary pulling force.

[0021] The auxiliary wire clamp seat may be in the shape of an isosceles triangle, a square, a rectangle, etc. In order to facilitate observation of the state of the hollow screw on the ground or by using a drone, an observation hole 7 may be provided at the corresponding hollow screw. The observation hole 7 may be a rectangular hole, a circular hole, or a triangular hole.

[0022] The auxiliary wire clamp seat can be made of metal plate, such as stainless steel plate. The metal plate is easy to process; in order to improve the strength, ribs can be formed in the longitudinal direction by bending.

[0023] The upper end of the clamp ring 81 is provided with a pin hole adapted to the clamp ring pin 10; the lower clamp ring portion in contact with the pre-twisted tension wire 9 is provided with a cylindrical surface with an arc groove. The curvature of the arc groove section should be slightly larger than the outer diameter of the columnar preload section.

[0024] The above examples are only used to illustrate the present invention. In addition, there are many different implementations. These implementations are all conceivable by those skilled in the art after understanding the concept of the present invention, so they are not listed here one by one.

Claims

1. A terminal anchoring wire clamp, comprising a main terminal anchoring wire clamp and an auxiliary terminal anchoring wire clamp; the auxiliary terminal anchoring wire clamp is hinged to the main terminal anchoring wire clamp through a main hinge shaft; characterized in that: The auxiliary terminal anchoring wire clamp includes an auxiliary wire clamp seat and a pair or more pairs of clamp rings and pre-twisted tension wires symmetrically arranged with the center axis of the main cable as the axis for supporting the pre-twisted tension wire. The clamp ring and the auxiliary wire clamp seat are hinged through a clamp ring pin, and the clamp ring pins of the clamp ring are parallel to the main hinge axis, and the center axis of the clamp ring part of the clamp ring is perpendicular to the main hinge axis.

2. The terminal anchoring clamp according to claim 1, characterized in that: The middle section of the pre-twisted tension wire is a columnar pre-tightening section.

3. The terminal anchoring clamp according to claim 2, characterized in that: The length of the columnar pre-tightening section is greater than 30 mm.

4. The terminal anchoring clamp according to claim 1, characterized in that: The auxiliary wire clamp seat is provided with an observation hole at a position corresponding to the hollow screw rod.

Images