A bending-resistant cable suitable for long-span erection

Abstract

The application discloses a kind of anti-bending cable suitable for large-span erection, comprising: square tube seat, chuck ear and elbow sleeve group, the inside of square tube seat is fixedly installed with axle seat, and the both ends of axle seat are respectively rotatably installed with locking knob located inside square tube seat, the other end of locking knob is equipped with abutment piece, chuck ear is rotatably installed at the both ends of square tube seat, the surface of chuck ear is equipped with lock ear, and the surface of lock ear is equipped with abutment groove, elbow sleeve group includes fixed ear, sleeve ear ring, bending strip and air cock fixed on the surface of bending strip, the number of bending strip is two, and the side of two bending strips is connected with flexible connecting strip, the other end of two flexible connecting strips is connected with rubber strip.In the application, by setting new type air bag type elbow sleeve group structure, elbow sleeve group is connected to the surface of cable to be bent, and high pressure gas is input, so that bending strip is deformed and bent by airflow, cable is slowly deformed and bent, the stability of bending cable is improved, and bending wear and damage to cable are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable bending, in particular to an anti-bending cable suitable for large-span erection. BACKGROUND

[0002] In power transmission, industrial automation, rail transportation and many other fields, as a key power and data transmission medium, the performance and reliability of the cable directly affect the operation efficiency and safety of the entire system. When the traditional cable is arranged in the rail system, it often needs to be bent several times to adapt to the complex spatial layout, especially when the cable outer sheath is high in hardness, the bending operation becomes particularly difficult. This not only increases the construction difficulty and cost, but also easily causes a series of problems in the bending process.

[0003] Firstly, the cable with high-hardness outer sheath often needs more force to complete the bending due to the insufficient rigidity and toughness of the material itself when bending, which not only increases the labor intensity of the construction personnel, but also may cause the cable at the bending point to be excessively squeezed. Such excessive squeezing not only may cause the outer sheath to break, thereby affecting the waterproof, dustproof and corrosion-resistant performance of the cable, but also may directly squeeze the internal conductor, causing serious consequences such as damage to the insulation layer, deformation or short circuit of the conductor, thereby seriously reducing the transmission efficiency and safety of the cable. Secondly, when bending at a large angle, the conductor and insulation layer inside the cable will be subjected to uneven stress distribution, and this stress concentration phenomenon will accelerate the aging process of the cable and shorten the service life of the cable. Especially in the working condition of frequent bending, the fatigue damage of the cable will be more obvious, increasing the cost and difficulty of system maintenance.

[0004] In addition, with the progress of science and technology and the development of industry, higher requirements are put forward for the flexibility, low-temperature resistance and bending resistance of the cable. The traditional cable is easy to harden and become brittle in a low-temperature environment, further increasing the difficulty of bending and the risk of breakage. In summary, in view of the problems of traditional cable such as difficulty in bending in the rail system, easy breakage and reduced transmission efficiency, there is an urgent need for a device that can efficiently bend the cable in a low-temperature environment, which can maintain stable bending work in complex working conditions and meet the high requirements of modern industry for the performance of the cable. SUMMARY

[0005] The present application aims to solve one of the problems in the prior art or related art.

[0006] Therefore, the technical solution adopted by the present invention is as follows: a bending-resistant cable suitable for long-span installation, comprising: a square tube base, clamping lugs, a bend sleeve assembly, and a cable. The cable is located in the bend sleeve assembly. A shaft seat is fixedly installed on the inner side of the square tube base, and locking buttons located on the inner side of the square tube base are rotatably installed at both ends of the shaft seat. The other end of the locking button is provided with an abutment piece. The clamping lugs are rotatably installed at both ends of the square tube base. The surface of the clamping lugs is provided with locking lugs, and the surface of the locking lugs is provided with abutment grooves. The bend sleeve assembly includes a fixing lug, a lug ring, a bending strip, and an air nozzle fixed to the surface of the bending strip. There are two bending strips, and one side of each of the two bending strips is connected to a flexible connecting strip. The other end of the two flexible connecting strips is connected to a rubber strip. The fixing lug and the lug ring are respectively fixed to two sections of the surface of the square tube base. The bottom end of the rubber strip is fixedly connected to the surface of the fixing lug.

[0007] The inner side of the bending strip is provided with several interconnected airbag grooves, and the airbag grooves gradually shrink towards both ends along the center line of the bending strip.

[0008] In a preferred embodiment, the present invention may be further configured such that: the number of clamping ears is four, arranged in pairs and symmetrically at both ends of the square tube base, and the inner sides of the two oppositely arranged clamping ears are provided with sleeve grooves for clamping cables.

[0009] In a preferred embodiment, the present invention can be further configured such that: the bearing seat and the locking button are located on the same axis, a lever is fixedly mounted on the surface of the locking button, the lock lug is located on both sides of the lug, and the abutment groove faces the two ends of the lug.

[0010] In a preferred embodiment, the present invention may be further configured such that: a gap is provided between the two bending strips, and the rubber strip, as well as the flexible connecting strips and bending strips located on both sides of the rubber strip, are combined to form a sleeve.

[0011] In a preferred embodiment, the present invention can be further configured such that: both the rubber strip and the flexible connecting strip are flexible rubber strip structures, and the toughness of the flexible connecting strip is greater than that of the rubber strip; and the bending strip is a rubber component.

[0012] In a preferred embodiment, the present invention can be further configured such that: the air nozzle is a one-way valve structure for connecting to the air pump, the surface of the air nozzle is provided with a quick-connect groove, and the air nozzle is fixed on the centerline of the bending strip and communicates with the airbag groove.

[0013] In a preferred embodiment, the present invention can be further configured such that: the earring is an arc-shaped sleeve structure, and the inner side of the earring is provided with a sleeve hole groove for fitting onto the bending strip.

[0014] The beneficial effects achieved by this invention are as follows:

[0015] 1. In the present application, by setting a new type of air bag elbow sleeve set structure, the elbow sleeve set is connected to the surface of the cable to be bent, and high pressure gas is introduced to make the cable slowly deform and bend by the bending of the bending strip, improve the stability of the bent cable, and avoid damage to the cable caused by bending wear.

[0016] 2. In the present application, the compressed gas is introduced into the bending strip, and a large amount of heat energy is generated by the gas compression to increase the temperature inside the elbow sleeve set, heat bending the cable surface, improving the bending effect, and in daily use, the internal cavity structure of the bending strip is used to improve the heat insulation effect to avoid low temperature damage to the cable skin caused by the external environment.

[0017] 3. In the present application, the cable bending state is clamped and locked by the clamp ear, and the locking button is deflected to move the abutting ear piece and the locking ear to realize the clamping and locking effect of the clamp ear on the cable surface, the clamping and locking operation is simple, and the working efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The overall structure schematic diagram of an embodiment of the present application;

[0019] Figure 2 The square tube seat and elbow sleeve set structure schematic diagram of an embodiment of the present application;

[0020] Figure 3 The square tube seat exploded structure schematic diagram of an embodiment of the present application;

[0021] Figure 4 The bending state schematic diagram of the elbow sleeve set of an embodiment of the present application;

[0022] Figure 5 The locking button and clamp ear structure schematic diagram of an embodiment of the present application;

[0023] Figure 6 The locking button structure schematic diagram of an embodiment of the present application;

[0024] Figure 7 The elbow sleeve set structure schematic diagram of an embodiment of the present application;

[0025] Figure 8 The elbow sleeve set structure top view schematic diagram of an embodiment of the present application;

[0026] Figure 9 The bending strip cross section schematic diagram of an embodiment of the present application.

[0027] REFERENCE NUMERALS:

[0028] 100, square tube seat; 110, shaft seat; 120, locking button; 130, abutting ear piece; 121, abutting piece;

[0029] 200, clamp ear; 210, lock ear; 211, resistance groove;

[0030] 300, elbow sleeve set; 310, fixing ear; 320, sleeve ring; 330, bending strip; 340, air nozzle; 350, rubber strip; 360, flexible connecting strip; 331, air bag groove. DETAILED DESCRIPTION

[0031] In order to make the objects, technical solutions and advantages of the present application clearer, further detailed description will be made to the present application with reference to the specific embodiments and the accompanying drawings. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0032] It is understood that the above description is only exemplary and is not intended to limit the scope of the present application.

[0033] Some embodiments of the present application provide an anti-bending cable suitable for large-span erection.

[0034] In combination with Figures 1-9 As shown in the drawings, the anti-bending cable suitable for large-span erection provided by the present application comprises a square tube base 100, a clamp ear 200, an elbow sleeve set 300 and a cable, the cable is located in the elbow sleeve set 300, the inner side of the square tube base 100 is fixedly installed with an axle seat 110, and the two ends of the axle seat 110 are respectively rotatably installed with lock knobs 120 located on the inner side of the square tube base 100, the other end of the lock knob 120 is provided with a resistance ear 130, the clamp ear 200 is rotatably installed at the two ends of the square tube base 100, the surface of the clamp ear 200 is provided with a lock ear 210, and the surface of the lock ear 210 is provided with a resistance groove 211, the elbow sleeve set 300 comprises a fixing ear 310, a sleeve ring 320, a bending strip 330 and an air nozzle 340 fixed on the surface of the bending strip 330, the number of the bending strips 330 is two, and one side of each of the two bending strips 330 is connected with a flexible connecting strip 360, the other end of each of the two flexible connecting strips 360 is connected with a rubber strip 350, the fixing ear 310 and the sleeve ring 320 are respectively fixed on two sections of the surface of the square tube base 100, and the bottom end of the rubber strip 350 is fixedly connected with the surface of the fixing ear 310.

[0035] The inner side of the bending strip 330 is provided with a plurality of air bag grooves 331 in communication with each other, and the plurality of air bag grooves 331 gradually taper along the center line of the bending strip 330 towards the two ends.

[0036] In this embodiment, the number of the clamp ear 200 is four, and each two clamp ears 200 are symmetrically arranged at the two ends of the square tube base 100, and the inner sides of the two oppositely arranged clamp ears 200 are provided with sleeve grooves for clamping the cable.

[0037] Specifically, the cable surface is clamped by the clamp ears 200, and the cable in the bent state is locked and clamped.

[0038] In this embodiment, the shaft seat 110 and the locking knob 120 are located on the same axis, the surface of the locking knob 120 is fixedly provided with a dial piece 121, the locking head ears 210 are located on both sides of the abutting ears 130, and the abutting grooves 211 are opposite to both ends of the abutting ears 130.

[0039] Specifically, the clamping and locking effects of the cable by the clamp ears 200 on both sides are controlled by the locking knobs 120 at both ends of the shaft seat 110.

[0040] In this embodiment, gaps are arranged between the two bending and pressing strips 330, and the rubber strips 350 and the flexible connecting strips 360 and the bending and pressing strips 330 located on both sides of the rubber strips 350 are combined to form a sleeve shape.

[0041] In this embodiment, the rubber strips 350 and the flexible connecting strips 360 are flexible rubber strip structures, the flexibility of the flexible connecting strips 360 is greater than that of the rubber strips 350, and the bending and pressing strips 330 are rubber material members.

[0042] In this embodiment, the air nozzle 340 is a one-way valve structure for connecting with an air pump, the surface of the air nozzle 340 is provided with a quick connection groove, the air nozzle 340 is fixed on the center line of the bending and pressing strip 330 and communicates with the air bag groove 331.

[0043] Specifically, the bending pipe sleeve set 300 is sleeved into the inside of the bending pipe sleeve set 300 through the gap between the two bending and pressing strips 330, the air nozzle 340 and the compressed air pump are connected, high-pressure gas is input through the air pump, the bending and pressing strips 330 and the air bag grooves 331 are expanded, and the overall bending of the bending pipe sleeve set 300 is realized through the different expansion effects of the plurality of air bag grooves 331.

[0044] In this embodiment, the sleeve ring 320 is an arc-shaped sleeve block structure, and the inner side of the sleeve ring 320 is provided with a sleeve hole groove for sleeving the bending and pressing strip 330.

[0045] Specifically, the sleeve ring 320 is used for sleeving and fixing the bending pipe sleeve set 300 in the bent state.

[0046] Working principle and use process of the present application:

[0047] In the process of bending the guide cable, the bending sleeve set 300 is sleeved into the inside of the bending sleeve set 300 through the gap between the two bending pressing strips 330, the cable surface is clamped by the clamp head ear 200 at one end of the fixed ear 310 after the bending sleeve set 300 is adjusted, the locking knob 120 is manually operated to deflect, the both ends of the abutting piece 130 abut against the abutting groove 211 on the surface of the locking head ear 210, and the abutting piece 130 controls and locks the clamping state of the cable surface by the clamp head ear 200; the air nozzle 340 and the compressed air pump are connected, high-pressure gas is input by the air pump, the bending pressing strip 330 and the air bag groove 331 are expanded, the overall bending of the bending sleeve set 300 is realized by the different expansion effects of the plurality of air bag grooves 331, a large amount of heat energy is generated by the gas compression during the gas compression input process to increase the internal temperature of the bending sleeve set 300, the cable surface is heated and bent, the bending effect is improved, and the cable is slowly deformed and bent along the bending pressing strip 330; after the bending is completed, the other end of the bending sleeve set 300 is clamped into the inside of the sleeve ear ring 320, the cable is clamped by the clamp head ear 200 on the bottom surface of the sleeve ear ring 320, and the cable is locked and bent by the locking knob 120 on the same side.

[0048] In daily use, the internal cavity structure of the bending pressing strip 330 is used to improve the heat insulation effect to avoid low-temperature damage to the cable outer skin caused by the low temperature of the external environment.

[0049] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A bending-resistant cable suitable for long-span installation, characterized in that, The device includes a square tube base, clamp lugs, a bend sleeve assembly, and a cable. The cable is located inside the bend sleeve assembly. A shaft seat is fixedly installed on the inner side of the square tube base, and locking buttons located inside the square tube base are rotatably installed at both ends of the shaft seat. The other end of the locking button is provided with a lug. The clamp lugs are rotatably installed at both ends of the square tube base. The surface of the clamp lugs is provided with locking lugs, and the surface of the locking lugs is provided with abutment grooves. The bend sleeve assembly includes a fixing lug, a lug ring, a bending strip, and an air nozzle fixed to the surface of the bending strip. There are two bending strips, and one side of each bending strip is connected to a flexible connecting strip. The other end of each flexible connecting strip is connected to a rubber strip. The fixing lug and the lug ring are respectively fixed to two sections of the surface of the square tube base. The bottom end of the rubber strip is fixedly connected to the surface of the fixing lug. The number of clamp ears is four, arranged in pairs and symmetrically at both ends of the square tube base. The inner side of the two opposite clamp ears is provided with a sleeve groove for clamping the cable. The inner side of the bending strip is provided with several interconnected air bladder grooves, and the air bladder grooves gradually shrink towards both ends along the midline of the bending strip; there is a gap between the two bending strips, and the rubber strip and the flexible connecting strips located on both sides of the rubber strip and the bending strip are combined to form a sleeve shape. Insert the bending sleeve into the inside of the bending sleeve through the gap between the two bending strips, connect the air nozzle and the compressed air pump, and input high-pressure gas through the air pump to cause the bending strip and the air bladder groove to expand. The overall bending of the bending sleeve is achieved by the different expansion effects of the multiple air bladder grooves. The air nozzle has a one-way valve structure for connecting to the air pump. The surface of the air nozzle is provided with a quick-connect groove, and the air nozzle is fixed on the center line of the bending strip and communicates with the airbag groove. The air nozzle fills the air bladder groove with high-pressure gas, causing the bending strip to bend and using the heat generated by gas compression to assist in heating the bending part of the cable sleeved in the bending tube assembly. The shaft seat and the locking button are located on the same axis. A paddle is fixedly installed on the surface of the locking button. The lock lugs are located on both sides of the lug, and the grooves face the two ends of the lug. Both the rubber strip and the flexible connecting strip are flexible rubber strip structures, and the flexible connecting strip has greater toughness than the rubber strip. The bending strip is a rubber component.

2. The bending-resistant cable suitable for long-span installation according to claim 1, characterized in that, The ear loop is an arc-shaped sleeve structure, and the inner side of the ear loop is provided with a sleeve hole groove for fitting onto the bending strip.

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