Bridge type cable positioning and laying equipment

Abstract

The utility model discloses bridge type cable positioning and laying equipment, which relates to the technical field of cable positioning and laying, aims to solve the technical problem that the existing positioning and laying equipment is easy to loosen, and comprises a bridge main body, a plurality of semicircular positioning hoops are arranged at one end, close to a vibration source, of the bridge main body, and two positioning hoops form a fixing part. The two fixing parts restrain and fix the end area, close to a vibration source, of the cable, a buffer structure is arranged between the two fixing parts, a bag body is arranged in the buffer structure, an air hood is further arranged on one side of the bag body, the air hood is a horn-shaped flaring, and air flow exhausted from the air hood is diffused to form a dust accumulation prevention channel. According to the utility model, the traditional rigid fixing modes such as bolt fastening are changed, the cable is prevented from being forcibly pulled or extruded due to vibration through a mechanism of allowing small displacement and flexible energy absorption, the potential safety hazards such as short circuit and fixing piece loosening caused by vibration are reduced, and meanwhile, the grinding damage of hard dust to the cable is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of cable positioning and laying, and more specifically, to a bridge-type cable positioning and laying device. Background Art

[0002] When the bridge is close to vibration sources such as motors and fans, the mechanical vibration generated during the operation of the equipment will be conducted to the bridge body through the structure, resulting in the cables laid in the bridge being continuously subjected to high-frequency vibration impacts. Traditional cable fixing methods (such as bolt fastening clips, snap-type fasteners, etc.) mainly rely on rigid contact to achieve positioning. Under the long-term vibration effect, the cables will be subjected to periodic tensile, compressive or torsional stresses for a long time, which may cause insulation layer wear, conductor fracture or fastener loosening. This phenomenon is particularly significant in the large power equipment areas of industrial plants and the on-vehicle bridge systems of rail transit, and may lead to a series of safety hazards: the cables are displaced and sag due to fixing failure, resulting in the friction and damage of the insulation layer against the metal edge of the bridge, and even causing short-circuit faults.

[0003] In view of this, we propose a bridge-type cable positioning and laying device. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art, adapt to the actual needs, and provide a bridge-type cable positioning and laying device to solve the technical problem that the current existing positioning and laying devices are prone to loosening.

[0005] To solve the above technical problems, the utility model provides the following technical solution: a bridge-type cable positioning and laying device, including a bridge body. At one end of the bridge body close to the vibration source, a plurality of semi-circular positioning clamps are provided. Two of the positioning clamps form a fixing part, and the two fixing parts restrain and fix the end area of the cable close to the vibration source. The outer bottom of the positioning clamp at the lower part of the inner side end is fixed to the inner wall of the bridge body, and a buffer structure is arranged between the two fixing parts;

[0006] Inside the buffer structure, there is a capsule body, which wraps the outer circumference of the cable. On one side of the capsule body, there is also an air hood, which is a flared bell mouth. The air hood is provided with a first one-way valve communicating with the inside of the capsule body, and the air outlet of the first one-way valve diffuses along the air hood to form a dust-proof channel.

[0007] Preferably, the buffer structure includes a plurality of hard-connected metal rods, which are made of hard metal. The plurality of hard-connected metal rods are fixed to the positioning clamps, and the other ends of the hard-connected metal rods are connected with elastic metal rods, which are made of elastic metal and are in an arc-shaped structure bent towards the capsule body.

[0008] Preferably, a plurality of the rigid connecting metal rods and the elastic metal rods are located on the outer periphery of the capsule body, and the inner sides of the plurality of the rigid connecting metal rods and the elastic metal rods are all in contact with the outer periphery of the capsule body.

[0009] Preferably, the buffer structure further includes a sliding plate, the top of the sliding plate is connected to the outer periphery of the positioning clamp, and the sliding plate is limited and slid on the bottom wall of the bridge main body.

[0010] Preferably, the buffer structure further includes a fixing plate, the fixing plate is located on one side of the sliding plate and is fixed to the bridge main body, and a plurality of pulling springs are connected between the fixing plate and the sliding plate.

[0011] Preferably, a fixing ring is arranged inside the capsule body, a plurality of reset springs are bonded to the outer periphery of the capsule body, and a plurality of second one-way valves are installed on the part of the outer periphery of the capsule body close to the rigid connecting metal rods.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. The present utility model fixes the end of the cable through the positioning clamp, and combines the buffer structure composed of the rigid connecting metal rods, the elastic metal rods, the sliding plate and the pulling springs, allowing the cable to move freely within a fixed range. When vibrating, the deformation of the elastic metal rods and the elastic force of the pulling springs act together to absorb the vibration energy, avoiding the stress directly acting on the cable body or the fixing point, significantly reducing the risk of insulation layer wear and conductor breakage caused by high-frequency vibration, prolonging the service life of the cable, changing the traditional rigid fixing methods such as bolt fastening, and preventing the cable from being forcibly pulled or squeezed due to vibration through the "allowing small displacement + flexible energy absorption" mechanism. It is especially suitable for scenarios close to strong vibration sources such as motors and fans (such as industrial factories and rail transit), reducing safety hazards such as short circuits and fixing part loosening caused by vibration, and solving the problem that the existing positioning laying equipment is prone to loosening.

[0014] 2. The present utility model also wraps the outer periphery of the cable through the capsule body inside the buffer structure. When vibrating, the elastic metal rods squeeze the capsule body, and the internal gas is diffused and discharged along the air hood through the first one-way valve, forming a "dust-proof air curtain" to prevent dust (especially fibrous and oily dust) from accumulating on the cable surface or in the gaps of the bridge. When the reset spring drives the capsule body to reset, external clean air is sucked through the second one-way valve, forming a reciprocating air flow to further blow away potential dust accumulation, avoiding the formation of an insulating layer by dust resulting in poor heat dissipation and insulation aging of the cable, and at the same time preventing abrasive damage to the cable by hard dust (such as metal debris), reducing risks such as insulation breakdown and skin abrasion caused by dust, and improving the long-term reliability of the bridge system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural schematic diagram of the present utility model;

[0016] Figure 2 This is a schematic structural diagram between the buffer structure and the bladder in the present utility model;

[0017] Figure 3 This is a schematic structural diagram of the buffer structure part in the present utility model;

[0018] Figure 4 This is a schematic semi-sectional structural diagram of the bladder in the present utility model.

[0019] Explanation of the reference numerals in the figure: 1. Bridge main body; 2. Positioning clamp; 3. Buffer structure; 4. Bladder; 5. Air hood; 6. First one-way valve; 7. Fixed ring; 8. Return spring; 9. Second one-way valve; 301. Rigid connecting metal rod; 302. Elastic metal rod; 303. Sliding plate; 304. Fixed plate; 305. Pulling spring. Specific embodiments

[0020] As Figures 1 to 4 shown, a cable positioning and laying device of a bridge type related to the present utility model includes a bridge main body 1. A plurality of semi-circular positioning clamps 2 are arranged at one end of the bridge main body 1 close to the vibration source. Two positioning clamps 2 form a fixing part, and the two fixing parts restrain and fix the end area of the cable close to the vibration source. The bottom of the outer periphery of the positioning clamp 2 at the inner side end is fixed to the inner wall of the bridge main body 1, and a buffer structure 3 is arranged between the two fixing parts.

[0021] The buffer structure 3 includes a plurality of rigid connecting metal rods 301. The rigid connecting metal rods 301 are made of hard metal. The plurality of rigid connecting metal rods 301 are fixed to the positioning clamp 2, and the other end of the rigid connecting metal rod 301 is connected with an elastic metal rod 302. The elastic metal rod 302 is made of elastic metal. The plurality of rigid connecting metal rods 301 and the elastic metal rod 302 are located on the outer periphery of the bladder 4, and the inner sides of the plurality of rigid connecting metal rods 301 and the elastic metal rod 302 are all in contact with the outer periphery of the bladder 4.

[0022] A sliding plate 303 is further arranged on one side of the plurality of elastic metal rods 302. The top of the sliding plate 303 is connected to the outer periphery of the positioning clamp 2 at the outer side end. The sliding plate 303 is limited to slide on the bottom wall of the bridge main body 1, and the limited sliding is realized through a slider and a chute. Through the limited sliding, the horizontal movement of the positioning clamp 2 at the inner side end can be restricted, and no lateral spatial displacement will occur, ensuring stability. The buffer structure 3 further includes a fixed plate 304. The fixed plate 304 is located on one side of the sliding plate 303 and is fixed to the bridge main body 1. A plurality of pulling springs 305 are connected between the fixed plate 304 and the sliding plate 303. The pulling springs 305 can pull the sliding positioning clamp 2 to reset it.

[0023] Working principle: When the vibration source vibrates, the cable will be driven to vibrate. During the vibration process, due to the limited sliding of the sliding plate 303, one end of the cable can move horizontally. When the movement occurs, the elastic force of the multiple pulling springs 305 and the elastic metal material of the multiple elastic metal rods 302 can buffer the movement and further eliminate the vibration force.

[0024] It is worth mentioning that when the vibration source vibrates, it may produce a small vibration displacement. If the cable end is fixed too tightly, it will be forced to pull. The buffer structure 3 allows the cable to move freely within a fixed range (such as ±5cm horizontally and ±3cm vertically), offset the vibration displacement of the equipment through a flexible connection, and then absorb the vibration energy through its own deformation, avoiding direct stress on the cable body or fixed points, avoiding cable tearing or connector detachment caused by rigid connection, reducing fatigue damage to the cable due to vibration, and extending the service life.

[0025] When the cable is running, Joule heat will be generated due to the conductor resistance, which is normally dissipated through the metal casing of the bridge or air convection. Dust accumulation forms an insulation layer (especially fibrous and oily dust), which hinders heat conduction and air circulation. The cable runs at high temperature for a long time, which accelerates the aging of the insulation layer (such as polyvinyl chloride PVC and cross-linked polyethylene XLPE), resulting in reduced insulation resistance and increased breakdown risk. Hard dust (such as metal debris and sand particles) accumulates on the cable surface or at the corners of the bridge. When the cable is slightly displaced due to vibration, thermal expansion and contraction, a grinding effect will be formed, gradually thinning the insulation layer; dust particles may be embedded in the cracks on the cable skin, expanding the scope of damage.

[0026] In order to prevent dust from entering and affecting later maintenance, a sac 4 is arranged inside the buffer structure 3, and the sac 4 wraps the outer periphery of the cable. An air hood 5 is also arranged on one side of the sac 4. The air hood 5 is a trumpet-shaped expansion. A first one-way valve 6 connected to the inside of the sac 4 is arranged on the air hood 5. The exhaust gas of the first one-way valve 6 diffuses along the air hood 5 to form a dust-proof channel. A fixing ring 7 is arranged inside the sac 4. A plurality of reset springs 8 are bonded to the outer periphery of the sac 4. A plurality of second one-way valves 9 are installed on the outer periphery of the sac 4 near the hard-connected metal rod 301, and the elastic metal rod 302 is an arc-shaped structure bent toward the sac 4.

[0027] Working principle: During use, when vibration occurs, the elastic metal rod 302 bends inward, so that during the buffering process, the outer periphery of the capsule 4 can be squeezed, so that the external gas is diffused and discharged from the first one-way valve 6 through the air cover 5, and the elasticity of the reset spring 8 is used to reset the capsule 4 and suck in the external gas. In this reciprocating manner, the gas can be continuously discharged to blow out the dust and avoid dust accumulation.

[0028] The embodiments disclosed in the present utility model are preferred embodiments, but not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present utility model based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present utility model, they are within the protection scope of the present utility model.

Claims

1. A bridge-type cable positioning and laying device, characterized in that, It includes a bridge main body (1). At one end of the bridge main body (1) close to the vibration source, a plurality of semi-circular positioning clamps (2) are provided. Two of the positioning clamps (2) form a fixing part, and the two fixing parts restrain and fix the end area of the cable close to the vibration source. The outer bottom of the positioning clamp (2) at the lower part of the inner side is fixed to the inner wall of the bridge main body (1), and a buffer structure (3) is arranged between the two fixing parts; A bladder (4) is arranged inside the buffer structure (3). The bladder (4) wraps around the outer periphery of the cable. An air hood (5) is further arranged on one side of the bladder (4). The air hood (5) is a flared bell mouth. A first one-way valve (6) communicating with the inside of the bladder (4) is provided on the air hood (5), and the air discharged from the first one-way valve (6) diffuses along the air hood (5) to form a dust-proof accumulation channel.

2. The cable positioning and laying device of the bridge type according to claim 1, characterized in that, The buffer structure (3) includes a plurality of rigid connecting metal rods (301). The rigid connecting metal rods (301) are made of hard metal. The plurality of rigid connecting metal rods (301) are fixed to the positioning clamp (2). The other end of the rigid connecting metal rod (301) is connected to an elastic metal rod (302). The elastic metal rod (302) is made of elastic metal and is an arc-shaped structure bent towards the bladder (4).

3. The cable positioning and laying device of the bridge type according to claim 2, characterized in that The plurality of rigid connecting metal rods (301) and the elastic metal rod (302) are located on the outer periphery of the bladder (4), and the inner sides of the plurality of rigid connecting metal rods (301) and the elastic metal rod (302) are all in contact with the outer periphery of the bladder (4).

4. A bridge-type cable positioning and laying device according to claim 3, characterized in that, The buffer structure (3) further includes a sliding plate (303). The top of the sliding plate (303) is connected to the outer periphery of the positioning clamp (2), and the sliding plate (303) is limited and slides on the bottom wall of the bridge main body (1).

5. The cable positioning and laying device of the bridge type according to claim 4, characterized in that, The buffer structure (3) further includes a fixing plate (304). The fixing plate (304) is located on one side of the sliding plate (303) and is fixed to the bridge main body (1). A plurality of pulling springs (305) are connected between the fixing plate (304) and the sliding plate (303).

6. The cable positioning and laying device of the bridge type according to claim 5, characterized in that, A fixing ring (7) is arranged inside the bladder (4). A plurality of reset springs (8) are adhesively bonded to the outer periphery of the bladder (4). A plurality of second one-way valves (9) are installed on the part of the outer periphery of the bladder (4) close to the rigid connecting metal rod (301).

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