Cable protection device

Abstract

The utility model discloses a cable protection device, and mainly relates to electrical engineering. Comprising a box body and a cover body, and a wire inlet hole is formed in the box body; the wire inlet hole is a taper hole, the cable protection device comprises a limiting piece matched with the wire inlet hole, and the limiting piece is connected to the surface of a cable in a sleeving mode. The cable box further comprises a pre-tightening piece, the pre-tightening piece is arranged in the box body, and the pre-tightening piece is provided with a winding groove matched with the outer diameter of a cable. The beneficial effects of the utility model lie in that the cable connector is used for protecting the connection part of a cable, and can play a role in tensile and anti-dragging after the cable is connected, so that the cable connected at a high position can resist severe weather, and the situation that the cable is easy to loosen after being dragged and the use requirement is influenced is avoided.

Description

Technical Field

[0001] The utility model relates to the field of electrical engineering, in particular to a cable protection device. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] When laying or erecting cables outside, if the cable length is not enough, it is definitely necessary to use a protective device to protect the cable and cable connection. For the protective device at the cable connection, an existing application number is CN202321839874.7, and the name is an electrical engineering cable protection device. The working principle of this device is: first, the device is fixed at the position of the two cable connection ends by bolts, and then the cover is opened, and the two cables are placed on both sides of the inside of the base, and the cables will first be placed on the surface of the movable block, and then the two ends of the cables will be connected and fixed. After the fixing is completed, the cover and the base can be closed. During the closing process, the cover will apply force to the cable placed on the surface of the movable block. At this time, the cable subjected to the downward thrust will drive the movable block to move downward, and the movable plate will be deflected at an angle by the thrust of the movable block, and the compression spring will also be squeezed. The other end of the deflected movable plate will drive the first limit plate to squeeze and fix the cable. When the cover and the base are closed, the fixing bolt can be rotated to fix it. It plays a role in protecting the cable connection and preventing it from being pulled. However, for this device, the cables installed at high places will be affected by severe weather such as strong wind, rain and snow after being connected. The above-mentioned device only relies on the friction between the cable and the fixing part and the spring force to prevent the cable from being pulled. The effect is not good, and it will still cause damage to the internal cable connection. Therefore, a new device is needed to solve the above problem and protect the cables. Utility Model Content

[0004] The purpose of the utility model is to provide a cable protection device, which is used to protect the cable connection and can play a role in resisting pulling and dragging of the cables after they are connected, so that the cables connected at high places can withstand bad weather and avoid being easily loosened after being pulled, affecting the use requirements.

[0005] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] A cable protection device includes a box body and a cover body, wherein the box body is provided with a wire entry hole; the wire entry hole is a tapered hole, and the cable protection device includes a limiter adapted to the wire entry hole, and the limiter is sleeved on the surface of the cable; and also includes a pre-tightening member, which is arranged inside the box body and is provided with a winding groove adapted to the outer diameter of the cable.

[0007] The limiting member is composed of an upper and a lower part. The outer part of the limiting member is gradually contracted. The gradually contracted part of the limiting member is provided with a movable opening. The limiting member is provided with a fixing groove, and the fixing groove is used for placing a wire ring.

[0008] The pre-tightening member is a column, and a winding groove is provided on the pre-tightening member. The number of the winding grooves is adapted to the number of cables, and the diameter of the winding groove is larger than the diameter of the cable.

[0009] The cross section of the preloaded member is circular or elliptical.

[0010] The inner surface of the tapered portion of the limiting member is provided with a threaded protrusion.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The device is used to protect the cable connection and can resist pulling and dragging of the cables after they are connected, so that the cables connected at high places can withstand bad weather and avoid being easily loosened after being pulled, which affects the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Attached Figure 1 It is an overall schematic diagram of the utility model device.

[0014] Attached Figure 2 This is a view of the limiting member in the utility model.

[0015] Attached Figure 3 It is a cross-sectional view of the device for protecting cables in the utility model.

[0016] Numbers shown in the accompanying drawings:

[0017] 1. Wire entry hole; 2. Limiting piece; 3. Preload piece; 4. Winding groove; 5. Movable opening; 6. Fixed groove; 7. Threaded protrusion. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the present application.

[0019] The utility model discloses a cable protection device, the main structure of which includes a box body and a cover body. A wire entry hole 1 is arranged in the box body. The wire entry hole 1 of the existing cable protection device is mostly circular, which cannot play the role of limiting and fastening. The wire entry hole 1 is improved to a tapered hole, and the position of the box body where the wire entry hole 1 is set is thickened, so as to limit the position of the limiting member 2 below. Figure 1 and Figure 2 As shown, the cable protection device includes a stopper 2 adapted to the cable entry hole 1, a through hole is provided in the center of the stopper 2, which is sleeved on the cable surface, the stopper 2 is divided into two parts, the upper and lower parts, the outer part of the stopper 2 is gradually contracted, and the gradually contracted part of the stopper 2 is provided with a movable opening 5, and the stopper 2 is provided with a fixing groove 6, and the fixing groove 6 is used to place a wire ring. The upper and lower parts of the stopper 2 are fixed by the wire ring in the fixing groove 6. After the stopper 2 is sleeved on the cable surface and the wire ring fixes the stopper 2, when the cable is pulled, the stopper 2 is driven to move together with the cable. At the same time, due to the cooperation between the stopper 2 and the tapered cable entry hole 1, the more the stopper 2 moves outward, the greater the tightening force of the tapered hole on the outer part of the stopper 2 and also acts on the cable surface. By setting the movable opening 5, the stopper 2 can be slightly deformed when it is squeezed, so as to better limit the cable, so for the material of the stopper 2, the stopper 2 cannot be a non-deformable material. In order to further increase the friction between the limiting member 2 and the cable, a threaded protrusion 7 is provided on the inner surface of the tapered portion of the limiting member 2 .

[0020] It is not enough to rely solely on the limiter 2 to prevent the cable from slipping and fixing. In order to further improve the overall stability of the device, a pre-tightening member 3 is also included, as shown in the accompanying drawings of the specification. Figure 1 and Figure 3 As shown, the preload member 3 is arranged inside the box body, the preload member 3 is a column, and a winding groove 4 is arranged on the preload member 3, and the diameter of the winding groove 4 is larger than the diameter of the cable. After the cable passes through the cable entry hole 1 and is sleeved with the limiter 2, the cable is wound into the winding groove 4 of the preload member 3 in a whole circle. When the cable is subjected to a tensile force exceeding the bearing range of the limiter 2, the cable is tightened. After the cable is tightened, the friction between the cable and the preload member 3 is used to prevent pulling. As for the number of winding grooves 4, the number of winding grooves 4 should be adapted to the number of cables, and all the cables that need to be connected will be wound around the winding groove 4. As for the number of winding circles of the wire groove in the winding groove 4, it can be wound multiple times, and the number of winding circles needs to be considered according to the cable diameter and the width of the winding groove 4. The more winding circles, the greater the friction between the winding groove 4 and the cable, thereby making the cable more resistant to tension. The main factor affecting the anti-pull performance of the pre-tightening member 3 on the cable is the circumference of the pre-tightening member 3 in contact with the cable, so the cross-section of the pre-tightening member 3 is circular or elliptical. The circumference of the pre-tightening member 3 with an elliptical cross-section is greater than that of a circular cross-section, and the tensile performance is better than that of a circular cross-section. Compared with a rectangular cross-section, the circular and elliptical cross-sections have no edges and will not cause damage to the cable surface.

[0021] To sum up, this device is used to protect the cable connections and can resist pulling and dragging after the cables are connected, so that the cables connected at high places can withstand bad weather and avoid being easily loosened after being pulled, affecting the use needs.

Claims

1. A cable protection device, comprising a box body and a cover body, wherein the box body is provided with a cable inlet hole (1); Features: The cable entry hole (1) is a tapered hole, and the cable protection device comprises a limiting member (2) adapted to the cable entry hole (1), and the limiting member (2) is sleeved on the surface of the cable; It also comprises a pre-tightening member (3), wherein the pre-tightening member (3) is arranged inside the box body, and the pre-tightening member (3) is provided with a winding groove (4) adapted to the outer diameter of the cable.

2. A cable protection device according to claim 1, characterized in that: The limiting member (2) is composed of an upper and lower part. The outer part of the limiting member (2) is gradually tapered. The tapered part of the limiting member (2) is provided with a movable opening (5). The limiting member (2) is provided with a fixing groove (6), and the fixing groove (6) is used to place a wire ring.

3. A cable protection device according to claim 1 or 2, characterized in that: The pre-tightening member (3) is a column, and a winding groove (4) is provided on the pre-tightening member (3). The number of the winding grooves (4) is adapted to the number of cables, and the diameter of the winding groove (4) is greater than the diameter of the cable.

4. A cable protection device according to claim 3, characterized in that: The cross section of the pre-tightening member (3) is circular or elliptical.

5. A cable protection device according to claim 2, characterized in that: A threaded protrusion (7) is provided on the inner surface of the tapered portion of the limiting member (2).

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