CN209743437U

CN209743437U - Be suitable for conveyer wet brake of mine adverse circumstances

Info

Publication number: CN209743437U
Application number: CN201920302416.7U
Authority: CN
Inventors: 焦召明; 焦显阳; 韩晓强; 陈贵春
Original assignee: LAIZHOU YATONG HEAVY EQUIPMENT CO Ltd
Current assignee: LAIZHOU YATONG HEAVY EQUIPMENT CO Ltd
Priority date: 2019-03-11
Filing date: 2019-03-11
Publication date: 2019-12-06
Anticipated expiration: 2029-03-11

Abstract

The utility model discloses a wet brake of a conveyor suitable for severe mine environment, wherein a lip-shaped sealing ring of a rotating shaft of an inner wrapping framework is embedded between a hollow wheel hub and a central hole of a pressure plate; the hollow hub outside the inner bag framework rotating shaft lip-shaped sealing ring extends outwards in the circumferential direction to form a lip eave, a gap exists between the inner end face of the lip eave and the outer end face of the pressure plate, the lip eave extends outwards in the circumferential direction to form a convex edge, the protective cover gap of the pressure plate fixedly connected covers the convex edge, and the gap between the convex edge and the protective cover and the gap between the inner end face of the lip eave and the outer end face of the pressure plate form a labyrinth. Labyrinth structure can prevent effectively that the clearance between hollow wheel hub and the pressure disk that pollutants such as water and silt from passing through from getting into endocyst skeleton rotation axis lip seal and hollow wheel hub form the dynamic seal in to improve the life of dynamic seal, reduced the change number of times of sealing washer, promoted the use reliability of stopper.

Description

Be suitable for conveyer wet brake of mine adverse circumstances

Technical Field

The utility model relates to a loading and transporting machine especially relates to a be suitable for conveyer wet brake of mine adverse circumstances.

Background

The Chinese patent with the publication number of CN 202659776U discloses a wet type multi-plate hydraulic brake for a front axle of a vehicle, which comprises a fixed hub, wherein the fixed hub comprises a brake gear ring, a bearing seat, an oil cylinder, a piston, a brake spring, a spring supporting plate and an oil seal seat, and further comprises a rotating hub, the rotating hub comprises a shaft, a brake seat, a friction plate group, a first bearing group, a second bearing group, a floating seal group, a gland and a wheel thickness connecting screw, the friction plate group of the brake is soaked in gear oil, and the brake friction plate group can not generate sparks when the brake is engaged or disengaged in a closed wet type environment and has good explosion-proof performance. However, as the temperature of the gear oil can be increased due to frequent braking, oil-containing steam formed in the closed chamber causes the pressure of the closed chamber to increase, and thus the gear oil seeps out of the floating seal group. Meanwhile, the underground environment of the mine is severe, the road is muddy, dust flies, water, silt and other pollutants easily enter from the gap between the bearing seat and the shaft and contact with the leaked gear oil, and along with the alternation of cold and heat, the pollutants may enter the sealing surface of the floating sealing group and adhere to the sealing surface, so that the sealing corrosion and abrasion are caused, the service life of the sealing is greatly reduced, and the oil leakage of the gear oil in the oil pool is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, disclosing a be suitable for mine adverse circumstances's cargo airplane wet brake, the technical scheme who takes is:

A conveyer wet brake suitable for mine adverse circumstances, including the intermediate disk that fixes together with the axle housing characterized in that: the middle disc comprises a piston mounting section with a larger inner diameter at the left side and a friction plate mounting section with a smaller inner diameter at the right side; two ends of the middle plate are fixedly connected with an annular fixed plate and a pressure plate respectively; the hollow hub penetrates through the central hole of the pressure plate and is supported by a bearing arranged on a semi-shaft sleeve which penetrates through the central hole of the fixed disc and is fixedly connected with the central hole of the fixed disc in a sealing way, a dynamic friction plate is arranged on the hollow hub through a spline, a static friction plate is arranged on the friction plate installation section of the middle disc through a spline, and the dynamic friction plate and the static friction plate are arranged at intervals; a cylindrical piston is arranged in the middle disc, the piston comprises a large outer diameter section with a larger outer diameter at the left side and a small outer diameter section with a smaller outer diameter at the right side, the large outer diameter section of the piston is matched with the large inner diameter section of the piston mounting section of the middle disc, the small outer diameter section of the piston is matched with the small inner diameter part of the friction plate mounting section of the middle disc, the length of the large outer diameter section of the piston is smaller than that of the large inner diameter part of the piston mounting section of the middle disc, so that a closed cavity is formed between the piston and the middle disc, and braking high-pressure oil is injected into the closed cavity; the outer end surface of the bottom wall of the piston is abutted against the adjacent static friction plate or dynamic friction plate, and a plurality of springs are pressed between the inner end surface of the bottom wall of the piston and the inner end surface of the fixed disc; gear oil is filled in the inner cavity of the piston and the friction plate mounting section of the intermediate disc; a lip-shaped sealing ring of a rotating shaft with an inner-wrapping framework is embedded between the hollow hub and the central hole of the pressure plate; the hollow hub outside the inner bag framework rotating shaft lip-shaped sealing ring extends outwards in the circumferential direction to form a lip eave, a gap exists between the inner end face of the lip eave and the outer end face of the pressure plate, the lip eave extends outwards in the circumferential direction to form a convex edge, the protective cover gap of the pressure plate fixedly connected covers the convex edge, and the gap between the convex edge and the protective cover and the gap between the inner end face of the lip eave and the outer end face of the pressure plate form a labyrinth. Labyrinth structure can prevent effectively that the clearance between hollow wheel hub and the pressure disk that pollutants such as water and silt from passing through from getting into endocyst skeleton rotation axis lip seal and hollow wheel hub form the dynamic seal in to improve the life of dynamic seal, reduced the change number of times of sealing washer, promoted the use reliability of stopper.

furthermore, a plurality of small holes are uniformly formed in the circumferential direction of the small outer diameter section of the piston, a ventilation channel communicated with the outside is formed in the middle disc, and the small holes are communicated with the ventilation channel. Therefore, the pressure in the oil cavity of the gear can be reduced, the oil temperature is reduced, the reliability of the dynamic seal is improved, the probability of oil leakage is reduced, and the corrosion and the abrasion of the dynamic seal caused by the adhesion of pollutants to the dynamic seal are further reduced.

Furthermore, the bottom wall of the piston is provided with a hole which penetrates through the inner cavity of the piston and the friction plate mounting section of the intermediate disc, so that the pressures on two sides are balanced, and the flexibility of combining and loosening the dynamic and static friction plates is improved.

Furthermore, the lip-shaped sealing ring of the inner-wrapping framework rotating shaft is a lip-shaped sealing ring of the inner-wrapping framework rotating shaft with or without an auxiliary lip, and comprises a clamping spring.

Compared with the prior art, the utility model discloses abandon prior art integral type structure and adopt full assembly structure, make simply, the volume is less relatively, has improved the life of dynamic seal simultaneously, has reduced the change number of times of sealing washer, has promoted the service reliability of stopper, can adapt to the pit adverse circumstances in the pit.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partially enlarged view of fig. 1.

Fig. 3 is a schematic structural view of the protective cover of the present invention.

Detailed Description

The wet brake of the conveyor suitable for the severe mine environment comprises an intermediate disc 11 fixed with an axle housing, wherein the intermediate disc 11 comprises a large inner diameter section with a larger left inner diameter and a friction plate mounting section with a smaller right inner diameter; two ends of the middle plate 11 are fixedly connected with an annular fixed plate 12 and a pressure plate 4 respectively; the hollow hub 1 penetrates through a central hole of the pressure plate 4 and then is supported by a bearing 9 arranged on a semi-shaft sleeve 10 which penetrates through a central hole of the fixed disc 12 and is fixedly connected with the fixed disc in a sealing way, a dynamic friction plate 6 is arranged on the hollow hub 1 through a spline, a static friction plate 5 is arranged on a friction plate installation section of the middle disc through a spline, and the dynamic friction plate 6 and the static friction plate 5 are arranged at intervals; a cylindrical piston 7 is arranged in the middle disc, the piston 7 comprises a large outer diameter section with a larger outer diameter at the left side and a small outer diameter section with a smaller outer diameter at the right side, the large outer diameter section of the piston 7 is matched with the large inner diameter section of the piston mounting section of the middle disc, the small outer diameter section of the piston 7 is matched with the small inner diameter part of the friction plate mounting section of the middle disc, the length of the large outer diameter section of the piston 7 is smaller than that of the large inner diameter part of the piston mounting section of the middle disc, so that a closed cavity 13 is formed between the piston 7 and the middle disc 11, braking high-pressure oil is injected into the closed cavity 13, a high-pressure oil inlet and outlet hole communicated with the closed cavity 13 is formed in the middle disc 11, and the high; the outer end surface of the bottom wall 71 of the piston 7 is abutted against the adjacent static friction plate 5 or dynamic friction plate 6, and a plurality of springs 8 are pressed between the inner end surface of the bottom wall 71 of the piston 7 and the inner end surface of the fixed disc 12; gear oil is filled in the inner cavity of the piston 7 and the friction plate mounting section of the intermediate disc; a gear oil drain hole 111 is formed below the middle disc 11, and an oil filling hole is formed in the fixed disc 12 and is not shown in the figure; a lip-shaped sealing ring 2 of a rotating shaft with an inner-wrapping framework is embedded between the hollow hub 1 and a central hole of the pressure plate 4; the hollow hub 1 outside the lip seal ring 2 of the inner-bag framework rotating shaft extends outwards and circumferentially to form a lip brim 101, a gap exists between the inner end face of the lip brim 101 and the outer end face of the pressure plate 4, the lip brim 101 extends outwards and circumferentially to form a convex edge 102, the convex edge 102 is coated in the gap of the protection cover 3 fixedly connected with the pressure plate 4, and the gap between the convex edge 102 and the protection cover 3 and the gap between the inner end face of the lip brim 101 and the outer end face of the pressure plate 4 form a labyrinth. The small outer diameter section of the piston 7 is provided with a small hole 72, the middle disc 11 corresponding to the position of the small hole 72 is provided with a ventilation channel 110 communicated with the outside, and the small hole 72 is communicated with the ventilation channel 110. The bottom wall 71 of the piston 7 is provided with a hole 73 which penetrates through the piston inner cavity and the friction plate mounting section of the intermediate disc. The inner-wrapped framework rotating shaft lip-shaped sealing ring 2 is an inner-wrapped framework rotating shaft lip-shaped sealing ring with or without an auxiliary lip and comprises a tightening spring.

When the brake works, the high-pressure oil pushes the piston to move leftwards, the spring is pressed, the dynamic and static friction plates are loosened, and the vehicle runs. When the brake pedal is stepped on, the high-pressure oil of the brake oil cylinder flows back to the oil tank, and at the moment, the piston presses the dynamic and static friction plates under the action of the spring to enable the vehicle to generate a braking effect.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A wet brake for a conveyor suitable for a mine severe environment, comprising an intermediate disc (11) fixed with an axle housing, characterized in that: the middle disc (11) comprises a piston mounting section with a larger inner diameter at the left side and a friction plate mounting section with a smaller inner diameter at the right side; two ends of the middle disc (11) are fixedly connected with an annular fixed disc (12) and a pressure disc (4) respectively; the hollow hub (1) penetrates through a center hole of the pressure plate (4) and then is supported by a bearing (9) arranged on a semi-shaft sleeve (10) which penetrates through a center hole of the fixed disc (12) and is fixedly connected with the fixed disc in a sealing way, a movable friction plate (6) is arranged on the hollow hub (1) through a spline, a static friction plate (5) is arranged on a friction plate installation section of the middle disc through a spline, and the movable friction plate (6) and the static friction plate (5) are arranged at intervals; a cylindrical piston (7) is arranged in the middle disc, the piston (7) comprises a large outer diameter section with a large outer diameter on the left side and a small outer diameter section with a small outer diameter on the right side, the large outer diameter section of the piston (7) is matched with the large inner diameter part of the piston mounting section of the middle disc, the small outer diameter section of the piston (7) is matched with the small inner diameter part of the friction plate mounting section of the middle disc, the length of the large outer diameter section of the piston (7) is smaller than that of the large inner diameter part of the piston mounting section of the middle disc, so that a closed cavity (13) is formed between the piston (7) and the middle disc (11), and high-pressure brake oil is injected into the closed cavity (13); the outer end surface of the bottom wall (71) of the piston (7) is abutted against the adjacent static friction plate (5) or dynamic friction plate (6), and a plurality of springs (8) are pressed between the inner end surface of the bottom wall (71) of the piston (7) and the inner end surface of the fixed disc (12); gear oil is filled in the inner cavity of the piston (7) and the friction plate mounting section of the intermediate disc; a lip-shaped sealing ring (2) of a rotating shaft with an inner-wrapping framework is embedded between the hollow hub (1) and the central hole of the pressure plate (4); the hollow hub (1) outside the inner-bag framework rotary shaft lip-shaped sealing ring (2) extends outwards in the circumferential direction to form a lip eave (101), a gap exists between the inner end face of the lip eave (101) and the outer end face of the pressure plate (4), the lip eave (101) extends outwards in the circumferential direction to form a convex edge (102), the protective cover (3) fixedly connected with the pressure plate (4) is coated with the convex edge (102) in the gap, and the gap between the convex edge (102) and the protective cover (3) and the gap between the inner end face of the lip eave (101) and the outer end face of the pressure plate (4) form a labyrinth.

2. The wet brake for the transport plane suitable for the severe mine environment as claimed in claim 1, wherein: a plurality of small holes (72) are uniformly formed along the circumferential direction of the small outer diameter section of the piston (7), a ventilation channel (110) communicated with the outside is formed in the middle disc (11), and the small holes (72) are communicated with the ventilation channel (110).

3. The wet brake for the transport plane suitable for the severe mine environment as claimed in claim 1, wherein: the bottom wall (71) of the piston (7) is provided with a hole (73) which penetrates through the inner cavity of the piston and the friction plate mounting section of the intermediate disc.

4. The wet brake for the transport plane suitable for the severe mine environment as claimed in claim 1, wherein: the lip-shaped sealing ring (2) of the inner-wrapped framework rotating shaft is a lip-shaped sealing ring of the inner-wrapped framework rotating shaft with or without an auxiliary lip and comprises a tightening spring.