CN108988214B - Cable dragging protector - Google Patents

Abstract

The invention discloses a cable dragging protector, comprising a circular outer plate member and a rubber plate fixedly mounted on the inner side of the outer plate member. The radian of the groove is 1/3~1/2π, the rubber plate has a first opening groove corresponding to the opening groove, the radian of the first opening groove is smaller than the radian of the snap groove, and the rubber plate is in the The two ends of the first opening groove are arc transitions, and two convex posts are arranged at the inner position of the rubber plate. The convex posts have hollow grooves, so that the convex posts are easy to deform. The first opening slot enters, and then squeezes and deforms the convex column. At the position below the two convex columns, it contacts the inner wall of the rubber plate. At the position of the outer wall of the outer plate member, the opening groove is the center. Two limit stop bars; this device can protect the outer skin of the cable when laying.

Description

A cable drag protector

technical field

The present invention relates to a cable dragging protector.

Background technique

The cable is usually a rope-like cable formed by twisting several or several groups of conductors [at least two in each group]. Each group of conductors is insulated from each other and often twisted around a center. insulating cover. Many are erected in the air or installed underground or underwater for telecommunication or power transmission.

The cable mainly consists of the following 4 parts. ① Conductive core: Made of high-conductivity material (copper or aluminum). According to the requirements for the flexibility of the cable under the conditions of laying and use, each core may be made of a single wire or multiple wires stranded. ②Insulation layer: The insulating material used for the cable should have high insulation resistance, high breakdown electric field strength, low dielectric loss and low dielectric constant. Commonly used insulating materials in cables are oil-impregnated paper, polyvinyl chloride, polyethylene, cross-linked polyethylene, rubber, etc. Cables are often classified by insulating materials, such as oil-impregnated paper insulated cables, PVC cables, XLPE cables, etc. ③Sealing sheath: protect the insulated core from damage from machinery, moisture, moisture, chemicals, light, etc. For insulation susceptible to moisture, lead or aluminum extruded sealing jackets are generally used. ④Protection cover: used to protect the sealing sheath from mechanical damage. Generally, galvanized steel tape, steel wire or copper tape, copper wire, etc. are used as armor to wrap around the sheath (called armored cable), and the armor layer also plays the role of electric field shielding and preventing external electromagnetic wave interference. In order to prevent the steel belt and steel wire from being corroded by the surrounding medium, they are generally coated with asphalt or wrapped with an impregnated jute layer or extruded polyethylene and polyvinyl chloride sleeves.

When the cable is laid, it needs to be dragged. During the process of dragging the cable, the friction between the cable and the ground for a long time will easily cause the surface of the cable to wear, and the oxidation will be accelerated in the later stage, causing the cable to fail.

Based on the above problems, it is necessary to provide a cable dragging protector that can protect the outer sheath of the cable during installation.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a cable dragging protector that can protect the outer sheath of the cable during installation.

In order to solve the above problems, the present invention adopts the following technical solutions:

A cable dragging protector, comprising a circular outer plate and a rubber plate fixedly mounted on the inner side of the outer plate, an opening groove is arranged at the outer ring of the outer plate, and the radian of the opening groove is 1/3~1/2π, the rubber plate has a first opening slot corresponding to the opening slot, the radian of the first opening slot is smaller than the radian of the opening slot, and the rubber plate is located at the edge of the first opening slot. The arc transitions at both ends, and two protruding posts are provided at the inner position of the rubber plate. The protruding posts have hollow grooves, so that the protruding posts are easy to deform. When assembling with the cable, the cable enters from the first opening slot. , and then squeeze and deform the convex column, at the position below the two convex columns, and contact the inner wall of the rubber plate, at the position of the outer wall of the outer plate member, with the opening groove as the center, two limit stops are symmetrically arranged left and right. When the outer plate is deflected so that one of the limit bars contacts the ground, an included angle α is formed between the center of the opening slot and the horizontal plane, and α>30°.

Preferably, a plurality of conical positioning plugs are arranged on the inner wall of the outer plate, a rod is connected between the positioning plug and the outer plate, and the diameter of the rod is smaller than the maximum diameter of the positioning plug, The rod member and the outer plate member are fixed by electric welding, and a plurality of stepped holes are arranged on the outer wall of the rubber plate. Through the cooperation between the positioning insert and the stepped hole, the rubber plate can be quickly disassembled for easy replacement.

Preferably, the rod and the positioning insert are obtained by turning with a CNC lathe.

Preferably, the outer plate member is made of spring steel with good elasticity, and the wall thickness of the outer plate member is 2mm~3mm; the spring steel plate has good recovery ability, so it is convenient to open the opening slot after bending.

Preferably, two threaded holes are symmetrically arranged on the outer wall of the outer plate, the two threaded holes are arranged symmetrically with the opening groove as the center, and the two threaded holes are on the same diameter line of the outer plate. The threaded hole is equipped with a screw. When dragging the cable through the product, the staff responsible for dragging one end of the cable can rotate the screw so that the screw locks the cable, and then the dragging can be realized by holding the limit stop lever; The setting of the screw makes the device have a new function. In the traditional technology, one end of the cable is mainly resisted on the shoulder, and then the two hands grasp the cable in front of the chest to drag it. This kind of dragging method causes a large downward pressure on the shoulder. , it is easy to cause strain, and after fixing the cable with screws, the cable can be dragged through the limit stop bar, without the need to resist the cable on the shoulder, and two workers can also be responsible for dragging and pulling at the same time, reducing labor intensity. The diameter of the cable is large and the quality is also large, then the screw can also be screwed in, so that the screw pierces the outer skin of the cable, and when the cable is installed later, it is only necessary to intercept the damaged cable.

In this product, the rubber plate is directly formed by injection molding, and the outer plate can be formed by bending the spring steel plate at one time, and then the rubber plate can be assembled on the inner side of the spring steel plate.

The fixing method of the device and the cable is as follows:

First determine the bending resistance of the dragged cable. The bending resistance of each cable is different. According to the bending resistance, the distance between two adjacent protectors is determined. Under the support of the two adjacent protectors, the cable can be It will not be in contact with the ground to avoid the wear of the outer skin of the cable. During installation, only one of the workers needs to hold the limit baffles on both sides with both hands, and then pull it down to open the opening slot and the first opening slot. , after opening, another worker quickly snaps the cable from the opening slot and the first opening slot to realize the fixation between the protector and the cable. When dismantling later, just repeat the above steps in reverse to remove.

The beneficial effects of the present invention are: the device can be flexibly clamped on the outside of the cable, and when the cable is towed, the outer plate part contacts the ground to avoid or reduce the contact probability between the cable and the ground, avoid or reduce the wear of the cable sheath, avoid Due to the accelerated wear or aging of the cable caused by wear, the fixing of the device is relatively simple, and the docking time between each protector and the cable only takes 15~25 seconds. Suitable for promotion.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

Fig. 1 is the front view of the present invention;

Fig. 2 is the deflection schematic diagram of the present invention;

Fig. 3 is the implementation state diagram of the present invention;

Fig. 4 is the implementation state diagram of the present invention;

Fig. 5 is a side view of the outer plate body.

Detailed ways

All features disclosed in this specification, or all disclosed steps in a method or process, may be combined in any way except mutually exclusive features and/or steps.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), unless expressly stated otherwise, may be replaced by other equivalent or alternative features serving a similar purpose. That is, unless expressly stated otherwise, each feature is but one example of a series of equivalent or similar features.

In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end" ”, “length”, “outer end”, etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device or Elements must have a particular orientation, be constructed and operate in a particular orientation and are therefore not to be construed as limitations of the invention.

In addition, in the description of the present invention, "plurality" means at least two, such as two, three, etc., unless expressly and specifically defined otherwise.

In the present invention, unless otherwise expressly specified and limited, the terms "arrangement", "socket connection", "connection", "penetration", "plug connection" and other terms should be understood in a broad sense, for example, it may be a fixed connection, It can also be detachable connection or integrated; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relationship, unless otherwise expressly qualified. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Example 1

As shown in FIG. 1 and FIG. 2 , it includes a circular outer plate member 1 and a rubber plate 2 fixedly mounted on the inner side of the outer plate member 1 , and an opening groove 101 is provided at the outer ring of the outer plate member 1 . , the radian of the opening groove 101 is 1/3π, the rubber plate 2 has a first opening groove 201 corresponding to the opening groove 101, the radian of the first opening groove 201 is 1/4π, the rubber plate 2 The two ends of the first opening groove are arc-shaped transitions, and two convex pillars 202 are provided at the inner position of the rubber plate 2 . When the cable is assembled, the cable enters from the first opening slot, and then squeezes and deforms the protruding posts 202, at the position below the two protruding posts 202, and contacts the inner wall of the rubber plate 2, at the position of the outer wall of the outer panel 1 2. Two limit stops 102 are arranged symmetrically with the opening slot 101 as the center. When the outer plate 1 is deflected, so that one of the limit stops 102 contacts the ground, a center of the opening slot 101 is formed between the horizontal plane. The included angle α, α=37°.

Example 2

Referring to FIG. 3 , a plurality of conical positioning plugs 121 are arranged on the inner wall of the outer plate 1 , and rods 131 are connected between the positioning plugs 121 and the outer board 1 . The diameter is smaller than the maximum diameter of the positioning plug 121, the rod member 131 and the outer plate member 1 are fixed by electric welding, and a plurality of stepped holes 222 are provided on the outer wall of the rubber plate 2, and the positioning plug 121 is snapped into The stepped hole 222 is limited in the stepped hole 222, and the rubber plate can be quickly disassembled by the cooperation of the positioning insert block and the stepped hole, which is convenient for replacement.

Example 3

Referring to FIGS. 4 and 5 , two threaded holes 141 are symmetrically arranged on the outer wall of the outer panel 1 , the two threaded holes 141 are symmetrically arranged with the opening groove 101 as the center, and the two threaded holes 141 are located in the On the same diameter line of the outer plate 1, screws 151 are assembled through the threaded holes 141. When dragging the cable through the product, the staff responsible for dragging one end of the cable can rotate the screw so that the screw locks the cable , and then dragging can be realized by holding the limit stop lever; the setting of the screw makes the device have new functions. In the traditional technology, one end of the cable is mainly resisted on the shoulder, and then the two hands grasp the cable in front of the chest for dragging. , This kind of dragging method causes a large downward pressure on the shoulder, which is easy to cause strain. After fixing the cable with screws, the cable can be dragged through the limit stop bar, without the need to resist the cable on the shoulder. Two workers are responsible for dragging and pulling at the same time to reduce labor intensity. If the diameter of the cable is large and the quality is also large, the screw can also be screwed in, so that the screw can pierce the outer sheath of the cable. Change the damaged cable and cut it.

In this product, the rubber plate is directly formed by injection molding, and the outer plate can be formed by bending the spring steel plate at one time, and then the rubber plate can be assembled on the inner side of the spring steel plate.

The fixing method of the device and the cable is as follows:

First determine the bending resistance of the dragged cable. The bending resistance of each cable is different. According to the bending resistance, the distance between two adjacent protectors is determined. Under the support of the two adjacent protectors, the cable can be It will not be in contact with the ground to avoid the wear of the outer skin of the cable. During installation, only one of the workers needs to hold the limit baffles on both sides with both hands, and then pull it down to open the opening slot and the first opening slot. , after opening, another worker quickly snaps the cable from the opening slot and the first opening slot to realize the fixation between the protector and the cable. When dismantling later, just repeat the above steps in reverse to remove.

The beneficial effects of the present invention are: the device can be flexibly clamped on the outside of the cable, and when the cable is towed, the outer plate part contacts the ground to avoid or reduce the contact probability between the cable and the ground, avoid or reduce the wear of the cable sheath, avoid Due to the accelerated wear or aging of the cable caused by wear, the fixing of the device is relatively simple, and the docking time between each protector and the cable only takes 15~25 seconds. Suitable for promotion.

The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the present invention. Such changes and improvements fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (3)

1. A cable dragging protector, characterized in that it comprises a circular outer plate member, and a rubber plate fixedly mounted on the inner side of the outer plate member, and an open groove is provided at the outer ring of the outer plate member , the radian of the opening groove is 1/3~1/2π, the rubber plate has a first opening groove corresponding to the opening groove, the radian of the first opening groove is smaller than the radian of the opening groove, and the rubber plate is in the first opening groove. An arc transition at both ends of an open slot, and two protruding posts are arranged on the inner side of the rubber plate. The protruding posts have hollow grooves, so that the protruding posts are easy to deform. An open slot enters, and then squeezes and deforms the convex column. At the position below the two convex columns, it contacts the inner wall of the rubber plate. At the position of the outer wall of the outer plate member, two symmetrically arranged left and right are arranged around the open groove. For the limit stop rod, when the outer plate is deflected so that one of the limit stop rods touches the ground, an angle α is formed between the center of the opening groove and the horizontal plane, and α > 30°; Wherein, the inner wall of the outer plate is provided with a plurality of conical positioning plugs, a rod is connected between the positioning plug and the outer plate, and the diameter of the rod is smaller than the maximum diameter of the positioning plug, so The rod member and the outer plate member are fixed by electric welding, a plurality of stepped holes are arranged on the outer wall of the rubber plate, and the positioning insert block is clamped into the stepped holes and limited in the stepped holes; Wherein, two threaded holes are symmetrically arranged at the outer wall of the outer plate, the two threaded holes are arranged symmetrically with the opening groove as the center, and the two threaded holes are on the same diameter line of the outer plate, The threaded hole is equipped with a screw. When the cable is dragged through the cable dragging protector, the staff responsible for dragging one end of the cable can rotate the screw to make the screw lock the cable, and then hold the limit stop lever. drag. 2 . The cable dragging protector according to claim 1 , wherein the rod and the positioning insert are obtained by turning with a CNC lathe. 3 . 3 . The cable dragging protector according to claim 1 , wherein the outer plate member is made of spring steel material with good elasticity, and the wall thickness of the outer plate member is 2 mm to 3 mm. 4 .

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