Telescopic strain clamp

Abstract

The utility model relates to the technical field of electric power fittings, in particular to a telescopic strain clamp. Comprising a shell, convex shoulders are arranged on the two sides of one end of the shell, first threading holes are formed in the convex shoulders, the steel cable further comprises a steel cable, the two ends of the steel cable penetrate through the two first threading holes respectively, each fastening device comprises a block, a second threading hole is formed in the block in a penetrating mode, and the first threading holes are communicated with the second threading holes. Two second threading holes are formed in the block body, the two ends of the steel cable penetrate through the two second threading holes respectively, the block body is further provided with a threaded hole and a blocking hole, the threaded hole penetrates through one side of the block body and is communicated with the second threading holes, the threaded hole is in threaded connection with a bolt, one end of the bolt is a hemispherical top, and the steel cable can be tightly jacked into the blocking hole through the top. According to the utility model, the steel cable can easily pass through the second threading hole.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power hardware, in particular to a retractable tension-resistant wire clamp. Background Art

[0002] The tension clamp is a hardware used to fix the conductors on the overhead power lines and the tension towers of the substation in the power system. The patent with application number 201610729520.5 discloses an insulated tension clamp with a retractable wire pull rod, including an insulated tension clamp outer shell, an insulating rubber threading hole, a steel cable insulating sleeve and a bolt. A flexible steel cable is arranged above the insulated tension clamp outer shell, and a clamp fixing groove is arranged below the insulated tension clamp outer shell. The steel cable insulating sleeve is installed above the flexible steel cable, and the bolt is installed at the upper right of the insulating rubber threading hole and close to the bottom of the flexible steel cable. The length of the steel cable can be adjusted. This application provides a different way to achieve this function. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a retractable tension wire clamp in view of the above-mentioned technical deficiencies.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a retractable tension wire clamp, comprising a shell, both sides of one end of the shell are provided with bosses, the bosses are provided with a first threading hole, and also include a steel cable, the two ends of the steel cable respectively pass through the two first threading holes, and also include two fastening devices, the fastening device includes a block, the block is provided with a penetrating second threading hole, the two ends of the steel cable pass through the two second threading holes respectively, the block is also provided with a threaded hole and a blocking hole, the threaded hole passes through one side of the block and is connected to the second threading hole, the thread of the threaded hole is connected with a bolt, one end of the bolt is a hemispherical head, and the head can tightly push the steel cable into the blocking hole.

[0005] Preferably, the threaded hole is perpendicular to the second threading hole.

[0006] Preferably, the blocking hole is located on a side of the second threading hole away from the threaded hole.

[0007] Preferably, the cross section of the blocking hole is circular and the radius of the circle is greater than the radius of the plug.

[0008] Preferably, an insulating sleeve is also provided on the steel cable.

[0009] Compared with the prior art, the utility model has the following advantages: a second threading hole, a threaded hole and a blocking hole are provided on the block of the fastening device, and a bolt is threadedly connected to the threaded hole. A hemispherical head at one end of the bolt can tightly push the steel cable in the second threading hole into the blocking hole. Since the steel cable is bent at the place where it is tightened, it is difficult for it to slide relative to the block and is therefore fixed. Since the second threading hole is a straight hole, the steel cable can be easily passed through the second threading hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The figure is a schematic diagram of the structure of a retractable tension clamp.

[0011] Figure 2 It is a schematic diagram of the structure of the fastening device.

[0012] In the figure: 1, shell; 11, boss; 2, steel cable; 3, insulating sleeve; 4, fastening device; 41, blocking hole; 42, block; 43, second threading hole; 44, threaded hole; 45, bolt; 46, top head. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0014] Specific implementation method: Combination Figure 1-2As shown, a retractable tension clamp includes a housing 1, with bosses 11 provided on both sides of one end of the housing 1, and first threading holes provided on the bosses 11, and a steel cable 2, with both ends of the steel cable 2 passing through the two first threading holes respectively. It also includes two fastening devices 4, the fastening device 4 includes a block 42, with second threading holes 43 passing through the block 42, and the two ends of the steel cable 2 pass through the two second threading holes 43 respectively, and the diameter of the second threading hole 43 is slightly larger than the diameter of the steel cable 2. The block 42 is also provided with a threaded hole 44 and a blocking hole 41. The threaded hole 44 passes through one side of the block 42 and is connected to the second threading hole 43. The threaded hole 44 is threadedly connected with a bolt 45. One end of the bolt 45 is a hemispherical head 46. The blocking hole 41 is connected to the second threading hole 43. The head 46 can push the steel cable 2 tightly into the blocking hole 41. At this time, the part where the steel cable 2 is pushed is bent, and it is difficult to slide relative to the block 42. After loosening the bolt 45, the steel cable 2 can slide relative to the block 42 so that the effective action length of the steel cable 2 (that is, the length between the two fastening devices 4) can be adjusted. After tightening the bolt 45, the steel cable 2 cannot slide relative to the block 42. In the patent in the background technology, the steel cable needs to pass through the bolt cable outlet on one side of the bolt, and from its attached Figure 1 It can be seen that the steel cable is bent at a large angle when passing through, so it is difficult to pass the steel cable through the bolt cable outlet. In the present application, the second threading hole 43 is a straight hole, which can easily pass the steel cable through the second threading hole 43.

[0015] Preferably, the threaded hole 44 is perpendicular to the second threading hole 43 , and the axes of the two intersect, so that the head 46 can basically support the center of the steel cable 2 .

[0016] Preferably, the blocking hole 41 is located on the side of the second threading hole 43 away from the threaded hole 44. At this time, the extension direction of the blocking hole 41 is perpendicular to the extension direction of the threaded hole 44. Compared with the structure in which the extension direction of the blocking hole 41 is inclined to the extension direction of the threaded hole 44, when the steel cable 2 is pushed into the blocking hole 41 to the same degree, the distance moved by the bolt 45 in this structure is the smallest.

[0017] Preferably, the cross section of the blocking hole 41 is circular and the radius of the circle is larger than the radius of the head 46, so that the steel cable 2 is pushed into the blocking hole 41 to a greater extent, but the radius of the blocking hole 41 is smaller than the sum of the radius of the head 46 and the diameter of the steel cable 2, so that the steel cable 2 can be bent more greatly at the point where it is pushed. If the radius of the blocking hole 41 is much larger than the sum of the radius of the head 46 and the diameter of the steel cable 2, the bending of the steel cable 2 at the point where it is pushed is smaller. The blocking hole 41 is obtained by drilling from one side of the block 42, so it is at least connected to one side of the block 42.

[0018] Preferably, an insulating sleeve 3 is also provided on the steel cable 2 .

[0019] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A retractable tension clamp, comprising a housing (1), wherein both sides of one end of the housing (1) are provided with bosses (11), wherein the bosses (11) are provided with first threading holes, and further comprising a steel cable (2), wherein both ends of the steel cable (2) pass through the two first threading holes respectively, and wherein: The invention also comprises two fastening devices (4), wherein the fastening devices (4) comprise a block (42), wherein the block (42) is provided with a second threading hole (43) extending therethrough, and the two ends of the steel cable (2) respectively pass through the two second threading holes (43); the block (42) is further provided with a threaded hole (44) and a blocking hole (41), wherein the threaded hole (44) passes through one side of the block (42) and is connected to the second threading hole (43); a bolt (45) is threadedly connected to the threaded hole (44), and one end of the bolt (45) is a hemispherical head (46), and the head (46) can tightly push the steel cable (2) into the blocking hole (41).

2. The retractable tension clamp according to claim 1, characterized in that: The threaded hole (44) is perpendicular to the second threading hole (43).

3. The retractable tension clamp according to claim 2, characterized in that: The blocking hole (41) is located on a side of the second threading hole (43) away from the threaded hole (44).

4. The retractable tension clamp according to claim 3, characterized in that: The cross section of the blocking hole (41) is circular, and the radius of the circle is greater than the radius of the plug (46).

5. A retractable tension clamp according to any one of claims 1 to 4, characterized in that: An insulating sleeve (3) is also provided on the steel cable (2).

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