CN215487357U

CN215487357U - Disk brake with seat type sensor for monitoring braking positive pressure

Info

Publication number: CN215487357U
Application number: CN202120803956.0U
Authority: CN
Inventors: 张晓光; 谢瑞峰; 张二平; 武寨明; 林健; 胡万忠; 王凯; 雷高阳; 成佳颐; 徐桂云
Original assignee: Fangshan Dianping Coal Mine Huozhou Coal Electricity Group Lvliangshan Coal Electricity Co ltd; Gequan Mining Jizhong Energy Group Co ltd; Xuzhou Daheng Measurement & Control Technology Co ltd; China University of Mining and Technology CUMT; Jinneng Holding Equipment Manufacturing Group Co Ltd Sihe Coal Mine
Current assignee: Fangshan Dianping Coal Mine Huozhou Coal Electricity Group Lvliangshan Coal Electricity Co ltd; Gequan Mining Jizhong Energy Group Co ltd; Xuzhou Daheng Measurement & Control Technology Co ltd; China University of Mining and Technology CUMT; Jinneng Holding Equipment Manufacturing Group Co Ltd Sihe Coal Mine
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2022-01-11
Anticipated expiration: 2031-04-20

Abstract

A disk brake with seat-type sensor for monitoring positive braking pressure is composed of brake disk, cylinder, seat, disk spring group, hydraulic cylinder, piston, regulating screw, back cover and liner plateThe bottom circular rings of the left and right circular grooves of the dynamic positive pressure sensor are arranged at F₁And F₂Under the action of (A) to produce shear and bending deformation as strain regions, F₁Proportional to the strain, the strain signals of multiple strain gauges are output to the upper computer via signal lines to monitor the brake positive pressure F in real time₁The size of (d); according to F₁Diagnosing faults and giving control instructions: before starting, the vehicle is allowed to be started when the vehicle is equal to zero, and the vehicle is locked and started at the next time when the fault is not opened when the diagnosis brake is not equal to zero; when the brake is operated, the brake application fault which is not equal to zero diagnosis starts the safety brake; when braking, the allowable value which is more than or equal to the braking positive pressure allows the next driving, the allowable value which is less than the braking positive pressure diagnoses the fault of insufficient braking positive pressure, the next driving is locked, and the braking effect of the disc brake is greatly improved.

Description

Disk brake with seat type sensor for monitoring braking positive pressure

Technical Field

The utility model relates to a disc brake with a seat type sensor for monitoring the braking positive pressure, which is particularly suitable for monitoring the braking positive pressure of the disc brake of a mine hoist and a belt conveyor and is also suitable for monitoring the braking positive pressure of other disc brakes.

Background

The patent ZL 200810155642.3 discloses a disc spring seat sensor for monitoring brake positive pressure of a disc brake, wherein a disc spring force generated by disc spring deformation is monitored by a disc spring seat sensor disc body and is not equal to the brake positive pressure when a brake shoe assembly presses a brake disc, after the oil pressure is reduced to residual oil pressure from an opening state, the brake shoe assembly moves rightwards under the action of the disc spring force and presses the brake disc in the braking process, the disc spring force overcomes the disc spring hole, a hydraulic cylinder, a sealing ring, a rear cover, the sealing ring and a brake seat, and finally reduces the brake positive pressure to the final brake positive pressure when the brake shoe assembly presses the brake disc after the friction force of the brake shoe assembly and the residual oil pressure acting on a piston are jointly acted, obviously, the disc spring force is larger than the brake positive pressure and is not equal to the disc spring force, the disc spring force monitored by the disc spring seat sensor disc body is mistakenly used as the brake positive pressure and is used as the basis for diagnosing faults, the hidden danger is very large, although the monitored disc spring force of the disc spring seat sensor disc brake is larger than or equal to the allowable value of the braking positive pressure, the accident of over-braking failure occurs, for example, the disc spring with the inner hole diameter of 72mm should be used in the disc brake of the inclined shaft elevator in a certain mine, but the disc spring with the inner hole diameter of 71mm is mistakenly used, the friction force of the disc spring hole acting on the brake shoe assembly in the braking process is larger than the disc spring force, the deadlocking fault that the disc spring force does not push the brake shoe assembly to move rightwards occurs, the brake shoe does not press the brake disc to brake the positive pressure to be zero, the braking failure causes the major accident of the inclined shaft elevator car running, but the disc spring force monitored by the disc spring seat sensor disc is equal to the friction force of the disc spring hole acting on the brake shoe assembly, is not greatly equal to zero, the major fault that the braking positive pressure is zero is not monitored, and the disc spring force monitored by the disc spring seat sensor disc spring sensor disc, rather than the brake positive pressure of the brake shoe pressing on the brake disc, the failure of insufficient brake positive pressure cannot be monitored, and the monitored disc spring force is invalid.

When the open brake is opened, the brake shoe leaves the brake disc to keep a certain brake clearance, the brake positive pressure is zero, but the disc spring force is equal to the working oil pressure of the open brake, and the disc spring force monitored by the disc spring seat sensor disc body can not diagnose the brake-unopened fault when the open brake is opened.

It is therefore stated that it is only effective to monitor the brake positive pressure with which the brake shoes are pressed against the brake disc, for which purpose the utility model discloses a disc brake that monitors the brake positive pressure with which the brake shoes are pressed against the brake disc.

SUMMERY OF THE UTILITY MODEL

The technical problem is as follows: the utility model aims to provide a brake with a seat type sensor for monitoring the positive braking pressure when a brake shoe is pressed on a brake disc and a monitoring method thereof aiming at the defects in the prior art.

The technical scheme is as follows: the utility model relates to a disk brake with a seat type sensor for monitoring brake positive pressure, which comprises: the brake comprises a brake disc, a brake shoe, a cylinder body, a brake seat, a disc spring group, a hydraulic cylinder, a first sealing ring, a piston, a second sealing ring, an adjusting screw, a rear cover, a third screw and a lining plate, wherein one side of the cylinder body is sleeved on the brake seat in a movable fit manner, the brake shoe is a stepped disc, a left annular groove and a right annular groove are symmetrically formed in the outer circumference of the two end faces of the stepped disc, a plurality of strain gauges connected through signal lines are arranged in the left annular groove or the right annular groove, the thickness of the section of the disc at the position, corresponding to the left annular groove and the right annular groove, of the stepped disc is 5-10mm, the left inner end face of the stepped disc is slightly higher than the outer end seat face, the right inner end face of the stepped disc is slightly lower than the outer end face, the outer end face on the right side of the seated brake positive pressure sensor is fixedly connected with a lining plate, and the lining plate and a brake shoe are connected into a whole through a dovetail groove.

The plurality of strain gauges are 4-8 and are uniformly distributed on the circular ring at the bottom of the left annular groove or the right annular groove.

The cylinder body is a pipe body, the middle part of a seat type braking positive pressure sensor connected with the cylinder body is sequentially provided with an outer hole, a middle hole and an inner hole, a T-shaped connecting rod which is on the same axis with the cylinder body is arranged in the cylinder body, a disc spring group is sleeved on the T-shaped connecting rod, the front part of the T-shaped connecting rod penetrates through the middle hole of the seat type braking positive pressure sensor to be buckled and connected with a piston and is fixed by a screw III, the tail part of the T-shaped connecting rod is matched with and fixedly connected with the outer hole of the seat type braking positive pressure sensor, and the inner hole of the seat type braking positive pressure sensor is sleeved and buckled on the outer end face of the cylinder body and is fixed by the screw III.

The drum body is a flat-bottom sleeve with a central column, the flat-bottom sleeve and the seat type braking positive pressure sensor are of an integrated structure, the seat type braking positive pressure sensor is located at the bottom of the flat-bottom sleeve, the end face fixedly connected with the lining plate is slightly higher than the bottom end face of the flat-bottom sleeve, the disc spring group is sleeved in the flat-bottom sleeve, and the head of the central column in the flat-bottom sleeve is connected with the piston in a buckling mode and is fixed through a screw.

The cylinder body is a convex bottom sleeve with a central column, the middle part of a seat type braking positive pressure sensor connected with the cylinder body is provided with an outer hole and an inner hole, the inner hole of the seat type braking positive pressure sensor is sleeved on the convex bottom of the cylinder body and fixed by a screw, the excircle end surface of the seat type braking positive pressure sensor is buckled in a connecting sleeve of a lining plate and fixed by a screw, a disc spring group is sleeved in the convex bottom sleeve, and the head part of the central column in the convex bottom sleeve is buckled and connected with a piston and fixed by a screw III.

Has the advantages that: due to the adoption of the technical scheme, the brake can accurately monitor the brake positive pressure F of the brake shoe pressed on the brake disc₁Solves the problem that the brake in the prior art can not monitor the brake positive pressure F of the brake shoe pressed on the brake disc₁Since the disc spring force monitored by the disc spring seat sensor in the existing brake is not the brake positive pressure F that the brake shoe is directly pressed on the brake disc₁When braking, the disc spring force subtracts four friction forces and residual pressure to equal the positive braking pressureForce F₁The disc spring force is greater than the braking positive pressure F₁The hidden danger that the disc spring force monitored by the disc spring seat sensor disc body is mistakenly taken as the brake positive pressure is very large. The utility model takes the brake positive pressure applied by the monitored brake shoe to the brake disc as the basis for diagnosing faults and giving control instructions: before starting, if the starting is equal to zero, the starting is allowed, if the starting is not equal to zero, the fault is not opened by the diagnosis brake, and the current starting is locked; when the brake is in operation, if the brake is not equal to zero, the brake application fault is diagnosed, and the safety brake is started; when braking, the brake positive pressure allowable value is larger than or equal to the brake positive pressure allowable value, the next driving is allowed, the brake positive pressure insufficient fault is diagnosed when the brake positive pressure allowable value is smaller than the brake positive pressure allowable value, the next driving is locked, and the brake effect of the disc brake is greatly improved.

Drawings

Fig. 1 is a structural diagram of a closing brake state of a disc brake in which a seat sensor monitors a brake positive pressure according to a first embodiment of the present invention.

Fig. 2 is a structural diagram of an opening state of the disc brake in which the seat sensor monitors the brake positive pressure according to the first embodiment of the utility model.

Fig. 3 is a structural diagram of a closing brake state of the disc brake in which the seating sensor monitors a brake positive pressure according to the second embodiment of the present invention.

Fig. 4 is a structural diagram of an open state of the disc brake in which the seating sensor monitors the brake positive pressure according to the second embodiment of the utility model.

Fig. 5 is a structural diagram of a closing brake state of the disc brake in which the seating sensor monitors a brake positive pressure according to a third embodiment of the present invention.

Fig. 6 is a structural diagram of an open state of the disc brake in which the seat sensor monitors the brake positive pressure according to the third embodiment of the utility model.

In the figure: 1-brake disc; 2, brake shoe; 3, a first screw; 4, a second screw; 5-seat type braking positive pressure sensor; 5-1-strain gage; 5-2-signal line; 6-bond one; 7-bond two; 8, a cylinder body; 9-a brake seat; 10-disc spring group; 11-a hydraulic cylinder; 12-a first sealing ring; 13-a piston; 14, sealing ring II; 15-adjusting screws; 16-rear cover; 17-screw III; 18-a T-shaped link; 19-screw four; 20-lining board; 21-guide key.

Detailed Description

The utility model will be further described with reference to examples in the drawings to which:

embodiment one, as shown in fig. 1 and fig. 2, a disc brake with a seat type sensor for monitoring brake positive pressure is mainly composed of a brake disc 1, a brake shoe 2, a cylinder 8, a brake seat 9, a disc spring group 10, a hydraulic cylinder 11, a first seal ring 12, a piston 13, a second seal ring 14, an adjusting screw 15, a rear cover 16, a third screw 17, a T-shaped connecting rod 18 and a lining plate 20, one side of the cylinder body 8 is sleeved on the brake seat 9 in a movable fit manner, a guide key 21 is arranged at the matching position, the other side of the piston is connected with a seat type braking positive pressure sensor 5, the seat type braking positive pressure sensor 5 is a stepped disk, the outer circumference of two end surfaces of the stepped disk is symmetrically provided with a left annular groove and a right annular groove, the bottom circular ring of the left annular groove is provided with a plurality of strain gauges 5-1 connected by signal wires 5-2, and strain signals are output through the signal wires 5-2. The strain gauges 5-1 are 4-8 and are uniformly distributed on the circular ring at the bottom of the left annular groove or the right annular groove. The thickness of the section of the disc at the opposite position of the left annular groove and the right annular groove is not less than 5mm, and the value is 5-10mm according to the diameter of the disc. The inner end face on the left side of the stepped disc is slightly higher than the outer end seat face, the inner end face on the right side of the stepped disc is slightly lower than the outer end face, the outer end face on the right side of the seat type braking positive pressure sensor 5 is fixedly connected with the lining plate 20 through a screw I3, and the lining plate 20 and the brake shoe 2 are connected into a whole through a dovetail groove. The seat type brake positive pressure sensor 5 and the brake shoe 2 are connected into the same component, and the brake disc 1 is monitored to apply brake positive pressure F to the brake shoe 2₁(ii) a The cylinder 8 is a tube body, the middle part of the seat type braking positive pressure sensor 5 connected with the cylinder 8 is sequentially provided with an outer hole, a middle hole and an inner hole, a T-shaped connecting rod 18 which is coaxial with the cylinder is arranged in the cylinder 8, a disc spring group 10 is sleeved on the T-shaped connecting rod 18, the front part of the T-shaped connecting rod 18 penetrates through the middle hole of the seat type braking positive pressure sensor 5 to be buckled and connected with a piston 13 and is fixed by a plurality of screws III 17, the tail part of the T-shaped connecting rod 18 is matched with the outer hole of the seat type braking positive pressure sensor 5 and is fixedly connected by a plurality of screws IV 19, a key II 7 is arranged at the matching part, and the seat type braking positive pressure sensor 5 is provided with a seat type braking positive pressure sensorThe inner hole of the positive pressure sensor 5 is sleeved on the outer end face of the cylinder 8 and fixedly connected with the cylinder through a plurality of screws 4. The bottom circular rings of the left and right annular grooves of the seat type braking positive pressure sensor 5 are arranged at F₁And F₂Is a strain zone, F₁Proportional to the strain, multiple strain gauges 5-1 connected by signal line 5-2 are arranged on the bottom ring of the left annular groove, the strain signal is output to an upper computer through the signal line 5-2, and the braking positive pressure F is monitored in real time₁The size of (2). When braking, the outer circular ring end surface of the right annular groove of the seat type braking positive pressure sensor 5 bears the braking positive pressure F acted by the brake disc 1 to the brake shoe 2 and the lining plate 20₁The inner end surface of the left annular groove bears the resultant force F of the disc spring force, the four friction forces and the residual oil pressure₂The friction force of the four parts is the total friction force of the disc spring group 10, the brake seat 9, the hydraulic cylinder 11, the first sealing ring 12, the rear cover 16 and the second sealing ring 14 which sequentially act on the T-shaped connecting rod 18, the cylinder body 8, the small shaft and the large shaft of the piston 13, the residual oil pressure is equal to the oil pressure when the residual oil pressure is unloaded during braking, the residual oil pressure value is less than 0.5MPa, F is₁＝-F₂The bottom thickness and width of the left and right annular grooves are according to F₁Is determined.

In a disc brake implementing the seat type sensor monitoring the brake positive pressure as shown in fig. 3 and fig. 4, the main structure is basically the same as that of the first embodiment, and the same points are omitted. The difference is as follows: the cylinder body 8 is a flat-bottom sleeve with a central column, the flat-bottom sleeve and the seat type braking positive pressure sensor 5 are of an integrated structure, the seat type braking positive pressure sensor 5 is located at the bottom of the flat-bottom sleeve, the end face fixedly connected with the lining plate 20 is slightly higher than the bottom end face of the flat-bottom sleeve, the disc spring group 10 is sleeved in the flat-bottom sleeve, and the head of the central column in the flat-bottom sleeve is connected with the piston 13 in a buckling mode and is fixed through a screw III 17. When braking, the end surface of the outer circular ring of the right annular groove bears the braking positive pressure F acted by the brake disc 1 through the brake shoe 2 and the lining plate 20₁The inner end surface of the left annular groove bears the resultant force F of the disc spring force, the four friction forces and the residual oil pressure₂The friction force at four positions is disc spring group 10, brake seat 9, hydraulic cylinder 11 and seal ring one 12, back cover 16 and seal ringTwo 14 respectively act on the friction force of the inner shaft and the outer shaft of the cylinder 8 and the friction force of the small shaft and the large shaft of the piston 13, the residual oil pressure is equal to the oil pressure unloaded to the residual oil pressure during braking, the value of the residual oil pressure is less than 0.5MPa, F₁＝-F₂The bottom thickness and width of the left and right annular grooves are according to F₁Is determined.

Third embodiment, as shown in fig. 5 and fig. 6, a disc brake with an anchor sensor for monitoring the brake positive pressure has a main structure that is basically the same as the first embodiment, and the same points are omitted. The difference is as follows: the cylinder body 8 is a convex bottom sleeve with a central column, the middle part of a seat type braking positive pressure sensor 5 connected with the cylinder body 8 is provided with an outer hole and an inner hole, the inner hole of the seat type braking positive pressure sensor 5 is sleeved on the convex bottom of the cylinder body 8 and is fixed by a screw, the excircle end surface of the seat type braking positive pressure sensor 5 is buckled in a connecting sleeve of a lining plate 20 and is fixed by a screw, a disc spring group 10 is sleeved in the convex bottom sleeve, and the head part of the central column in the convex bottom sleeve is buckled and connected with a piston 13 and is fixed by a screw III 17. When braking, the end surface of the outer circular ring of the right annular groove bears the braking positive pressure F acted by the brake disc 1 through the brake shoe 2 and the lining plate 20₁The end face of the inner ring of the left annular groove bears the resultant force F of the disc spring force, the four friction forces and the residual oil pressure₂The four friction forces are the friction forces of the disc spring group 10, the brake seat 9, the hydraulic cylinder 11, the first sealing ring 12, the rear cover 16 and the second sealing ring 14 which are respectively acted on the inner shaft and the outer shaft of the cylinder 8 and the small shaft and the large shaft of the piston 13, the residual oil pressure is equal to the oil pressure unloaded to the residual oil pressure during braking, the residual oil pressure value is less than 0.5MPa, F is₁＝-F₂The bottom thickness and width of the left and right annular grooves are according to F₁Is determined.

Claims

1. A disc brake with an applied sensor monitoring positive brake pressure, comprising: brake disc (1), brake shoe (2), barrel (8), brake seat (9), dish spring group (10), pneumatic cylinder (11), sealing washer (12), piston (13), sealing washer two (14), adjusting screw (15), back lid (16), three (17) of screw and welt (20), its characterized in that: one side of the cylinder body (8) is sleeved on the brake seat (9) in a movable fit manner and is connected with the piston (13), the other side of the cylinder body is connected with a seat type brake positive pressure sensor (5), the seat type brake positive pressure sensor (5) is a stepped disc, a left annular groove and a right annular groove are symmetrically formed in the outer circumference of the two end faces of the stepped disc, a plurality of strain gauges (5-1) connected through signal lines (5-2) are arranged in the left annular groove or the right annular groove, the thickness of the disc section at the position, opposite to the left annular groove and the right annular groove, of the left annular groove is 5-10mm, the left inner end face of the stepped disc is slightly higher than the outer end seat face, the right inner end face of the right side is slightly lower than the outer end face, the outer end face on the right side of the seat type brake positive pressure sensor (5) is fixedly connected with a lining plate (20), and the lining plate (20) and a brake shoe (2) are connected into a whole through a dovetail groove.

2. A disc brake with an applied sensor monitoring positive brake pressure according to claim 1, wherein: the strain gauges (5-1) are 4-8 and are uniformly distributed on the circular ring at the bottom of the left annular groove or the right annular groove.

3. A disc brake with an applied sensor monitoring positive brake pressure according to claim 1, wherein: the cylinder body (8) is a pipe body, the middle part of a seat type braking positive pressure sensor (5) connected with the cylinder body (8) is sequentially provided with an outer hole, a middle hole and an inner hole, a T-shaped connecting rod (18) which is on the same axis with the cylinder body is arranged in the cylinder body (8), a disc spring group (10) is sleeved on the T-shaped connecting rod (18), the front part of the T-shaped connecting rod (18) penetrates through the middle hole of the seat type braking positive pressure sensor (5) to be buckled and connected with a piston (13) and is fixed through a screw III (17), the tail part of the T-shaped connecting rod (18) is matched and fixedly connected with the outer hole of the seat type braking positive pressure sensor (5), and the inner hole of the seat type braking positive pressure sensor (5) is sleeved on the outer end face of the cylinder body (8) and is fixed through a screw.

4. A disc brake with an applied sensor monitoring positive brake pressure according to claim 1, wherein: the drum body (8) is a flat-bottom sleeve with a central column, the flat-bottom sleeve and the seat type braking positive pressure sensor (5) are of an integrated structure, the seat type braking positive pressure sensor (5) is located at the bottom of the flat-bottom sleeve, the end face fixedly connected with the lining plate (20) is slightly higher than the bottom end face of the flat-bottom sleeve, the disc spring group (10) is sleeved in the flat-bottom sleeve, and the head of the central column in the flat-bottom sleeve is connected with the piston (13) in a buckling mode and is fixed through a screw III (17).

5. A disc brake with an applied sensor monitoring positive brake pressure according to claim 1, wherein: the cylinder body (8) is a convex bottom sleeve with a central column, the middle part of a seat type braking positive pressure sensor (5) connected with the cylinder body (8) is provided with an outer hole and an inner hole, the inner hole of the seat type braking positive pressure sensor (5) is sleeved on the convex bottom of the cylinder body (8) and is fixed by screws, the excircle end surface of the seat type braking positive pressure sensor (5) is buckled in a connecting sleeve of a lining plate (20) and is fixed by screws, a disc spring group (10) is sleeved in the convex bottom sleeve, the head part of the central column in the convex bottom sleeve is buckled and connected with a piston (13) and is fixed by a screw III (17).