Large-drift-diameter explosion-proof slip ring

Abstract

The utility model relates to the technical field of rotary electrical connection devices, and particularly discloses a large-drift-diameter explosion-proof slip ring, which is characterized in that a plurality of circles of annular grooves are arranged on the outer ring of a core sleeve, conductive copper rings isolated by insulating layers are embedded in the grooves, and the copper rings extend to wiring ends to wire holes on the side wall of the core sleeve; the outer side of the core sleeve is sleeved with bearing seats with bearing pieces, four evenly-distributed brush wire plates are fixed between the bearing seats through screws, the brush wire plates are provided with multiple strands of copper wire brushes which are inclined in the two directions, and the positive and negative rotation contact stability is ensured; the explosion-proof cover covers the bearing seat and realizes dust prevention and explosion prevention through the sealing ring; the cable lock head penetrates through the explosion-proof cover and is connected with the brush wire plate; detachable powder sticking rollers are arranged on the front side and the rear side of the wire brushing plate, and a wave-shaped flame-retardant sticky rubber sleeve can rotatably adsorb and rub copper powder. Through stator and rotor decoupling design, synchronous power supply of revolution and rotation of equipment is realized, and cable winding is eliminated; and the safety and the maintenance efficiency are improved through anti-explosion sealing and the modularized powder sticking roller, and continuous and stable output of the materials is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of conductive slip ring, in particular to a big drift explosion -proof slip ring. BACKGROUND

[0002] In the existing grain depot equipment, the slip ring as a key component is widely used to solve the cable winding problem in the equipment revolution, which realizes the power and signal transmission between the rotating part and the fixed part through the sliding contact type conductive structure. In recent years, the slip ring device developed by some grain and oil enterprises adopts the design of multiple contact rings cooperating with the electric brush, trying to meet the continuous rotation power supply demand of the equipment in limited space, and at the same time, considering the safety standard in the explosion-proof environment. This kind of technical scheme prolongs the service life by increasing the contact point density or optimizing the material wear resistance, and adopts the split type structure design to adapt to different specifications of the grain depot equipment.

[0003] However, the existing slip ring technology still has significant defects. Long-term friction of the sliding contact point is easy to cause accumulation of metal powder and local heating, resulting in increased contact resistance, unstable signal transmission and even risk of open circuit, which seriously affects the equipment operation reliability. UTILITY MODEL CONTENTS

[0004] In view of the problem that powder generated by friction of the moving contact point affects the operation reliability of the slip ring, the utility model provides a big drift explosion -proof slip ring provided with a powder adsorption and collection device.

[0005] The utility model adopts the scheme to solve the technical problem: a big drift explosion -proof slip ring, including the core cover, the ring groove is arranged on the outer ring surface of the core cover, the conductive copper ring is sleeved in the ring groove, a pair of bearing seats are further sleeved on the core cover, the bearing seat is fixed between the brush silk plate, the conductive brush silk is fixed on the brush silk plate, the conductive brush silk corresponds the contact conductive copper ring, the explosion -proof cover is sleeved on the outside of the bearing seat, the explosion -proof cover covers two bearing seats simultaneously, and the explosion -proof cover is fixed and installed through the bolt between the bearing seat, the cable lock head is arranged on the explosion -proof cover, and the cable is communicated with the conductive brush silk on the brush silk plate through the cable lock head;The sticky powder roller is installed between the bearing seat of the front side and the rear side of the brush silk plate, and the sticky powder roller includes a horizontal shaft, the horizontal shaft is located between the two bearing seats, a rotating drum is sleeved on the horizontal shaft, a fire -retardant adhesive rubber sleeve is sleeved on the rotating drum, and the fire -retardant adhesive rubber sleeve is adhered to capture the powder generated by wear.

[0006] Further, a plurality of parallel ring grooves are arranged on the outer ring of the core cover, a conductive copper ring is sleeved in each ring groove, an insulating layer is arranged between the conductive copper ring and the ring groove, a wiring cavity is further arranged on the outer ring surface of the core cover, a wiring end is protruded into the wiring cavity from the conductive copper ring, and a wire hole is arranged on the side surface of the core cover to communicate with the wiring cavity.

[0007] Further, a bearing piece is installed between the bearing seat and the core cover, and a sealing ring is arranged between the bearing seat and the core cover and between the bearing seat and the explosion -proof cover.

[0008] Further, the fire-retardant adhesive sleeve comprises a modified PVC or polyimide sleeve and a fire-retardant silicone rubber sleeve, high-viscosity pressure-sensitive adhesive is coated on the surface of the modified PVC or polyimide sleeve, and the fire-retardant silicone rubber sleeve is provided with a microstructure on the surface to increase the contact area and thus adsorb the powder.

[0009] Further, the fire-retardant adhesive sleeve is a wave-shaped sleeve with high and low portions alternating, and the protruding portions of the wave-shaped sleeve correspond to the ring grooves.

[0010] Further, bearing sleeves are arranged at the two ends of the rotating drum, bearings are arranged between the horizontal shaft and the rotating drum through the bearing sleeves, and the rotating drum can rotate around the horizontal shaft through the bearings.

[0011] Further, the bearing seat on one side is provided with a through countersunk hole, the horizontal shaft end of the powder sticking roller is provided with a peg cover, the powder sticking roller is inserted into and arranged between the bearing seats through the countersunk hole, and the peg cover is sleeved in the countersunk hole and fixed with the bearing seats through bolts.

[0012] The powder sticking roller and the fire-retardant adhesive sleeve are combined and designed, the powder sticking roller is arranged on the front and rear sides of the brush wire plate, and the wave-shaped fire-retardant adhesive sleeve (containing a modified PVC / polyimide sleeve and a fire-retardant silicone rubber sleeve) is adopted, the surface of the wave-shaped fire-retardant adhesive sleeve is provided with high-viscosity pressure-sensitive adhesive and a microstructure, the metal powder generated by friction can be efficiently adsorbed, and the problem of poor contact caused by powder accumulation of a traditional slip ring is solved. The protruding portions of the wave-shaped sleeve correspond to the ring grooves, and the local powder capturing efficiency is further improved.

[0013] The explosion-proof cover is integrated and sealed, the explosion-proof cover covers the two bearing seats at the same time and is fixed through bolts, the multi-layer sealing design of the sealing ring is combined, the large diameter structure is ensured, the explosion-proof requirement is met, and the contradiction between the explosion-proof performance and the diameter size of the traditional slip ring is overcome.

[0014] The powder sticking roller is modular and detachable, the powder sticking roller is quickly disassembled and assembled through the clamping structure of the countersunk hole and the peg cover, the rotating drum can freely rotate around the horizontal shaft through the bearing sleeve design, the adhesive sleeve can be easily cleaned or replaced during maintenance, and the powder sticking roller can uniformly contact the wear area during operation. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic view of a three-dimensional structure of a slip ring;

[0016] Figure 2 is a schematic view of an internal structure of a slip ring;

[0017] Figure 3 is a schematic view of a front structure of a slip ring;

[0018] Figure 4 is Figure 3Figure 2 is a sectional view along A-A of figure 1;

[0019] Figure 5 Figure 3 is a schematic view of the structure of the slip ring in another direction;

[0020] Figure 6 Figure 4 is a schematic view of the structure of the powder sticking roller in another direction;

[0021] Figure 7 Figure 5 is a schematic view of the structure of the powder sticking roller in another direction;

[0022] Figure 8 Figure 6 is a schematic view of the structure of the powder sticking roller in another direction; Figure 7 Figure 7 is a sectional view along B-B of figure 6.

[0023] Figure 8 is a schematic view of the structure of the powder sticking roller in another direction. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme of the utility model will be described in detail below.

[0025] Embodiment 1: the utility model provides a large drift anti-explosion slip ring, mainly and warehouse equipment are matched with use, realize slip ring outer ring fixed power input, inner ring follows warehouse equipment and turns around and moves power supply.

[0026] As shown in figure 1, the device includes the core cover 1 of inner ring, and the outer ring surface of core cover 1 is provided with multiple ring grooves 101, and the conductive copper ring 103 is sleeved in each ring groove 101, and the insulating layer is arranged between the conductive copper ring 103 and the wall of ring groove 101. Figures 1-4 Specifically, the clamping groove is processed in the middle part of the outer ring surface of core cover 1, the conductive copper ring 103 and the insulating ring are sequentially matched and installed into the core shaft clamping groove, the conductive copper ring 103 does not contact with core cover 1, the metal cover plate is installed from both ends of core cover 1, the metal cover plate is pressed tightly to the conductive copper ring 103 and the insulating ring from both ends, and is fixedly connected with core cover 1 by bolt.

[0027]

[0028] ​The core sleeve 1 is further provided with a wiring cavity, which is located below the ring groove 101. The conductive copper ring 103 extends into the cavity with a wiring end 1031 at the position facing the wiring cavity. Meanwhile, the side of the core sleeve 1 is provided with a wire hole 102, which is connected to the wiring cavity. The wire can be inserted into the wiring cavity through the wire hole 102 and connected to the wiring end 1031 of the conductive copper ring 103.

[0029] As shown in the drawings, a pair of bearing seats 2 are further sleeved outside the core sleeve 1. The bearing seats 2 are respectively sleeved on the core sleeve 1 from both ends of the core sleeve 1 and are tightly attached to the metal cover plate on the core sleeve 1. A bearing member 201 is installed between the bearing seat 2 and the core sleeve 1. The bearing seat 2 can rotate relative to the core sleeve 1 through the bearing member 201. A connecting and fixing member 204 is installed between the two bearing seats 2. The two bearing seats 2 are fixedly installed relative to each other through the connecting and fixing member 204. Figure 4

[0030] A brush wire plate 202 is installed between the bearing seats 2. Specifically, the brush wire plate 202 is suspendedly fixed between the bearing seats 2 through a group of parallel screw rods. A plurality of pairs of conductive brush wires 203 are fixed below the brush wire plate 202. Each pair of conductive brush wires 203 corresponds to contact one conductive copper ring 103. Each pair of conductive brush wires 203 is inclined to contact the conductive copper ring 103 from both clockwise and counterclockwise directions. Therefore, no matter the slip ring is reversed, the conductive brush wires 203 can effectively slide contact the conductive copper ring 103.

[0031] The conductive brush wires 203 are twisted and woven from a plurality of copper wires. A plurality of brush wire plates 202 are fixedly installed between the bearing seats 2 along the circumference. As shown in the drawings, four brush wire plates 202 are uniformly fixed between the bearing seats 2 in this embodiment. Figure 2

[0032] An explosion-proof cover 3 is sleeved outside the bearing seat 2. The explosion-proof cover 3 covers the two bearing seats 2. The explosion-proof cover 3 and the bearing seat 2 are fixedly installed through bolts. A cable lock head 301 is arranged on the explosion-proof cover 3. The cable is inserted into the bearing seat 2 through the cable lock head 301 and is connected to the conductive brush wires 203 on the brush wire plate 202.

[0033] A sealing ring 5 is further installed between the explosion-proof cover 3 and the bearing seat 2 and between the bearing seat 2 and the core sleeve 1. The sealing ring 5 can effectively prevent dust and water, thereby improving the safety of the slip ring.

[0034] Meanwhile, a powder sticking roller 4 is further fixed on the front and rear sides of the brush wire plate 202 between the bearing seats 2. The powder sticking roller 4 is installed on the front and rear sides of the brush wire plate 202. The powder sticking roller 4 includes a horizontal shaft 401, which is installed between the two bearing seats 2. A rotating drum 402 is sleeved on the horizontal shaft 401. A fire-retardant adhesive sleeve 403 is sleeved on the rotating drum 402.

[0035] ​​The fire-retardant viscous rubber sleeve 403 includes a modified PVC or polyimide rubber sleeve and a fire-retardant silicone rubber sleeve, the surface of the modified PVC or polyimide rubber sleeve is coated with high-viscosity pressure-sensitive adhesive to capture copper powder generated by wear through physical adhesion, and the surface of the fire-retardant silicone rubber sleeve is designed with a microstructure (such as a honeycomb texture) to increase the contact area and improve the adsorption efficiency of ultra-fine copper powder (particle size < 50 μm).

[0036] Working principle: The stator part of the large-diameter explosion-proof slip ring is composed of a bearing seat 2, a brush wire plate 202 and an explosion-proof cover 3, which is rigidly connected with the fixed cylinder of the stock-out equipment through bolts to maintain a stationary state.

[0037] The rotor part is a core sleeve 1, which realizes relative rotation with the bearing seat 2 of the stator through a bearing member 201, and is fixedly connected with the rotation motor driving shaft of the stock-out equipment to rotate synchronously with the rotation action of the equipment.

[0038] The brush wire plate 202 on the stator side is installed with conductive brush wires 203, which maintain sliding contact with the conductive copper ring 103 on the outer ring of the rotor core sleeve 1. The external cable is connected to the stator brush wire plate 202 through the cable lock head 301 of the explosion-proof cover 3, the current is transmitted to the core sleeve 1 through the conductive brush wires 203-conductive copper ring 103, and finally output to the rotation motor through the wire hole 102.

[0039] The revolution motor of the stock-out equipment is powered by independent fixed cables, while the power supply of the rotation motor is transmitted dynamically through the slip ring. When the equipment revolves, the stator moves as a whole around the revolution axis with the cylinder, while the rotor core sleeve 1 rotates relative to the stator under the driving of the rotation motor, realizing electrical decoupling of revolution and revolution, and completely eliminating cable entanglement.

[0040] The slip ring transmits electric energy from the stationary cable lock head 301 to the rotating rotation motor through the rotating contact interface between the rotor (core sleeve 1) and the stator (brush wire plate 202), while the explosion-proof cover 3 and the sealing structure ensure the safety of transmission in explosive environments. The problem of cable entanglement caused by the rotation of the stock-out equipment is solved, the continuous and stable operation of the equipment is ensured, the continuous and stable output of the material is ensured, and the application added value of the stock-out equipment is improved.

[0041] The main wear of the slip ring comes from the friction between the brush wires and the copper ring, therefore, a powder sticking roller 4 is installed at the front and rear ends of the brush wire plate 202, the friction powder generated between the brush wires and the copper ring is adsorbed by the high-viscosity pressure-sensitive adhesive on the surface of the modified PVC or polyimide rubber sleeve and the microstructure on the surface of the fire-retardant silicone rubber sleeve, avoiding the problem of poor contact caused by powder accumulation in the slip ring.

[0042] Example 2: as Figures 4-8As shown, the bearing seat 2 on one side is provided with a through countersunk hole 204, the end of the cross shaft 401 of the sticky roller 4 is provided with a nail cover 404, the sticky roller 4 is inserted and installed between the bearing seats 2 through the countersunk hole 204, the nail cover 404 is sleeved in the countersunk hole 204 and is fixed with the bearing seat 2 through a bolt.

[0043] The bearing sleeve is arranged at both ends of the rotary drum 402 of the sticky roller 4, bearings are installed between the cross shaft 401 and the rotary drum 402 through the bearing sleeve, the rotary drum 402 can rotate around the cross shaft 401 through the bearings. The fire-retardant sticky rubber sleeve 403 is a wave-shaped rubber sleeve with high and low alternation, and the protruding part of the wave-shaped rubber sleeve corresponds to the ring groove 101.

[0044] The sticky roller 4 is quickly disassembled and assembled through the clamping structure of the countersunk hole 204 and the nail cover 404, and the rotary drum 402 can rotate freely around the cross shaft 401 through the design of the bearing sleeve, which not only facilitates cleaning or replacing the sticky rubber sleeve during maintenance, but also ensures that the sticky roller 4 uniformly contacts the wear area during operation. The protruding part of the wave-shaped rubber sleeve corresponds to the ring groove 101, which further improves the local powder capture efficiency.

[0045] Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

Claims

1. A large-pitch explosion-proof slip ring, characterized by, The application relates to a brush wire fixing device for a motor, which comprises a core sleeve (1), a ring groove (101) arranged on the outer ring surface of the core sleeve (1), a conductive copper ring (103) sleeved in the ring groove (101), a pair of bearing seats (2) also sleeved on the core sleeve (1), a brush wire plate (202) fixed between the bearing seats (2), conductive brush wires (203) fixed on the brush wire plate (202), the conductive brush wires (203) corresponding to the conductive copper ring (103), an explosion-proof cover (3) sleeved on the outer side of the bearing seat (2), the explosion-proof cover (3) covering the two bearing seats (2) at the same time, the explosion-proof cover (3) and the bearing seat (2) being fixedly installed through bolts, a cable lock head (301) being arranged on the explosion-proof cover (3), and the cable being communicated with the conductive brush wires (203) on the brush wire plate (202) through the cable lock head (301); a powder sticking roller (4) is installed between the bearing seats (2) on the front and back sides of the brush wire plate (202), the powder sticking roller (4) comprises a horizontal shaft (401), the horizontal shaft (401) is located between the two bearing seats (2), a rotating drum (402) is sleeved on the horizontal shaft (401), a fire-retardant adhesive rubber sleeve (403) is sleeved on the rotating drum (402), and the fire-retardant adhesive rubber sleeve (403) is used for adhering and capturing the powder generated by abrasion.

2. The large-bore explosion-proof slip ring of claim 1, wherein, A plurality of parallel ring grooves (101) are arranged on the outer ring of the core sleeve (1), one conductive copper ring (103) is sleeved in each ring groove (101), an insulating layer is arranged between the conductive copper ring (103) and the ring groove (101), a wiring cavity is further arranged on the outer ring surface of the core sleeve (1), the conductive copper ring (103) has a wiring end (1031) extending into the wiring cavity, and a wire hole (102) is arranged on the side surface of the core sleeve (1) to communicate with the wiring cavity.

3. The large-bore explosion-proof slip ring of claim 1, wherein, Bearing pieces (201) are installed between the bearing seats (2) and the core sleeve (1), and sealing rings (5) are arranged between the bearing seat (2) and the core sleeve (1) and between the bearing seat (2) and the explosion-proof cover (3).

4. The large-bore explosion-proof slip ring of claim 1, wherein, The fire-retardant adhesive rubber sleeve (403) comprises a modified PVC or polyimide rubber sleeve and a fire-retardant silicone rubber sleeve, high-viscosity pressure-sensitive adhesive is coated on the surface of the modified PVC or polyimide rubber sleeve, the powder generated by abrasion is captured through physical adhesion, and the surface of the fire-retardant silicone rubber sleeve is provided with microstructures to increase the contact area and thus adsorb the powder.

5. The large-bore explosion-proof slip ring of claim 1, wherein, The fire-retardant adhesive rubber sleeve (403) is a high-low alternating wave-shaped rubber sleeve, and the protruding part of the wave-shaped rubber sleeve corresponds to the ring groove (101).

6. The large-bore explosion-proof slip ring of claim 1, wherein, Bearing sleeves are arranged at the two ends of the rotating drum (402), bearings are installed between the horizontal shaft (401) and the rotating drum (402) through the bearing sleeves, and the rotating drum (402) can rotate around the horizontal shaft (401) through the bearings.

7. The large-bore explosion-proof slip ring of claim 1, wherein, One of the bearing seats (2) is provided with a through countersunk hole (204), the end of the horizontal shaft (401) of the powder sticking roller (4) is provided with a nail cover (404), the powder sticking roller (4) is inserted between the bearing seats (2) through the countersunk hole (204), the nail cover (404) is sleeved in the countersunk hole (204) and is fixed with the bearing seat (2) through bolts.

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