CN215487334U - Caliper disc brake for monitoring positive braking pressure - Google Patents
Caliper disc brake for monitoring positive braking pressure Download PDFInfo
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- CN215487334U CN215487334U CN202120807303.XU CN202120807303U CN215487334U CN 215487334 U CN215487334 U CN 215487334U CN 202120807303 U CN202120807303 U CN 202120807303U CN 215487334 U CN215487334 U CN 215487334U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000003745 diagnosis Methods 0.000 abstract description 2
- 239000003245 coal Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Abstract
The utility model provides a caliper disc brake of monitoring braking positive pressure installs left and right brake tile in the brake disc seat on both sides, and the profile cylinder of brake seat floats in the support hole, only sets up dish spring group, hydro-cylinder and piston actuating mechanism on the left of the brake seat, can realize left and right both sides brake shoe braking, utility model's brake structure has solved the problem of disconnected axle of traditional disc brake, sealing performance is poor, the card hinders, regard the basis of diagnosis trouble and giving control command to the terminal braking positive pressure of monitoring: before starting, if the vehicle is allowed to start, if the vehicle is equal to zero, the vehicle is allowed to start, if the vehicle is not equal to zero, the open brake fault is diagnosed, and the current vehicle is locked; 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 braking positive pressure allowable value is larger than or equal to the braking positive pressure allowable value, the next driving is allowed, and when the braking positive pressure allowable value is smaller than the braking positive pressure allowable value, the failure caused by insufficient braking positive pressure is diagnosed, and the next driving is locked. The braking performance and the safety reliability of the caliper disc brake are greatly improved.
Description
Technical Field
The utility model relates to a caliper disc brake for monitoring brake positive pressure, which is particularly suitable for monitoring brake positive pressure of the caliper disc brake of a mine hoist and a belt conveyor for coal mines.
Background
A hydraulic cylinder rear disc brake disclosed in page 93 of 'mine hoist fault treatment and technical improvement' published in 2005, fig. 4-5 has been a traditional disc brake widely used by mine hoists and belt conveyors for coal mines, and defects such as broken shafts, poor sealing performance, blocking and the like are found in use: firstly, a fault that a brake cannot be opened due to the fact that a central shaft connected with a brake shoe is always broken; and oil leakage and blockage faults often occur in three sealing rings and three concentric stages.
The patent number ZL201620193301.5 discloses a kilometer deep well elevator floating disk brake, which can dynamically monitor the brake positive pressure between a brake shoe and a brake disk in real time, but actually monitors the disc spring force instead of the brake positive pressure between the brake shoe and the brake disk: dish spring seat sensor sets up the right-hand member at belleville spring subassembly, has monitored the dish spring power that belleville spring subassembly warp and produce from the right-hand member, and pressure sensor passes through T shape piston pressure at belleville spring subassembly's left end, and T shape piston moves left under the effect of dish spring and presses on pressure sensor, has monitored the dish spring power that belleville spring subassembly warp and produce from the left end. The disc spring force can be applied to the brake disc after overcoming the friction force at a plurality of positions of the disc spring hole, the T-shaped piston shaft, the brake cylinder barrel, the brake piston, the sliding pin shaft and the bracket, and the brake positive pressure between the brake shoe and the brake disc is applied to the brake disc. The monitored disc spring force is mistakenly used as the braking positive pressure, the purpose of improving the reliability of the brake by monitoring the braking positive pressure is not achieved, hidden dangers exist, during braking, although the monitored disc spring force is larger than the allowable value of the braking positive pressure, the friction force at multiple positions is increased to be not zero due to fatigue fracture of the disc spring, rusting of a sliding pair and the like, the actual braking positive pressure is smaller than the allowable value, and the hidden danger of insufficient braking positive pressure exists; if the friction force at a plurality of positions is increased to be larger than the disc spring force, the brake shoe is locked and is not pressed on the brake disc, and the major hidden trouble that the actual braking positive pressure is zero exists, which may cause major accidents. Therefore, the disc spring force is monitored, the brake positive pressure of the brake shoe pressing on the brake disc is not monitored, all brake faults cannot be monitored, major accidents caused by brake failure still occur, the monitored disc spring force is invalid, the monitored brake positive pressure of the brake shoe pressing on the brake disc is valid, and therefore the caliper disc brake for correctly monitoring the brake positive pressure of the brake shoe pressing on the brake disc is urgently needed.
SUMMERY OF THE UTILITY MODEL
The technical problem is as follows: the utility model aims to overcome the defects in the prior art and provide the caliper disc brake which has a compact structure, is convenient to use, is safe and effective and can monitor the brake positive pressure when a brake shoe is pressed on a brake disc.
The technical scheme is as follows: the utility model relates to a caliper disc brake for monitoring brake positive pressure, which comprises: the brake disc, the left brake shoe, the left lining plate, the cylinder body, the double-headed screw, the disc spring group, the brake seat, the disc spring seat, the force bearing plate, the adjusting nut, the right brake shoe, the right lining plate and the bracket, wherein the outline of the brake seat is of a cylindrical integral structure, the outline cylinder is sleeved on the bracket and is in movable fit with the hole of the bracket, a key four is arranged at the matching position, a groove suitable for arranging the brake disc, the brake shoe and the lining plate is formed in the middle of the outline cylinder of the brake seat, the left brake shoe and the left lining plate are connected with the right brake shoe and the right lining plate through dovetail grooves, a stepped blind hole with a large outside and a small inside is formed in the middle of the left side of the groove, a through hole with the same axis as the stepped blind hole on the left side is formed in the right side of the groove, a plurality of through holes are formed in the outer circumference of the left side of the brake seat, the double-headed screw for connection is arranged in the through hole, the two ends of the double-headed screw are square, the square shaft at the right end of the double-headed screw is matched with the square hole on the left lining plate and is connected and fixed through a screw, the square shaft at the left end of the double-headed screw is matched with the square hole of the bearing plate and is fixedly connected through a screw III, gaps are reserved between the left end surface of the brake seat and the bearing plate and between the right end surface of the brake seat and the left lining plate, the section of the barrel is in a shape of a Chinese character 'jin', two stepped shafts with different diameters at the non-open end of the barrel are movably matched with the stepped blind hole at the left side of the brake seat, gaps are reserved between the right end of the small shaft and the bottom of the stepped blind hole, a disc spring group which is positioned in the barrel and is provided with a bowl opening and a bowl opening in pair is sleeved on an inner shaft at the open end of the barrel, a disc spring seat which is sleeved on the inner shaft and is fixed on the brake seat through a screw is arranged at the outer side end of the disc spring group, a central hole of an adjusting nut is in threaded connection with the end of the inner shaft to form a threaded pair, the bearing plate which is sleeved on the inner shaft in static fit with the hole of the bearing plate, a second key is arranged at the matching position, and the bearing plate is connected with the adjusting nut through a fourth screw; the through hole on the right side of the groove of the brake seat is movably matched with the column casing of the right lining plate, a key III is arranged at the matching position, and a brake positive pressure sensor positioned between the end of the through hole on the right side of the groove and the right lining plate is arranged on the column casing of the right lining plate; the left brake shoe, the left lining plate, the double-headed screw, the force bearing plate, the adjusting nut, the cylinder and the disc spring group form a left brake group; the right brake shoe, the right lining plate, the brake positive pressure sensor and the brake seat form a right side brake group.
The brake positive pressure sensor is a stepped disc, a central hole of the stepped disc is in movable fit with a column casing of the right lining plate, a left annular groove and a right annular groove are symmetrically arranged on the end face of the disc, a strain gauge connected with a signal line is placed in the left annular groove or the right annular groove, the outer end face of the disc on the left annular groove side is slightly higher than the inner end face and abuts against the right lining plate, the inner end face of the disc of the right annular groove is slightly higher than the outer end face and abuts against the through hole end on the right side of the annular groove of the brake base.
The 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.
And a dustproof ring is arranged between the disc spring seat and the inner shaft.
The large shaft and the small shaft are provided with a key I at the matching position of the large shaft and the large hole of the brake seat, and the small shaft and the small hole of the brake seat are provided with a sealing ring at the movable matching position.
Has the advantages that: aiming at the problem that the existing brake monitors the disc spring force and is not the brake positive pressure when a brake shoe presses a brake disc, the disc brake is obtained through a large number of experiments and researches: during braking, the disc spring force can be applied to the brake disc only by overcoming a plurality of friction forces, the disc spring force is applied to the brake disc and is a braking positive pressure, obviously, the disc spring force is not equal to the braking positive pressure and is greater than the braking positive pressure, the monitored disc spring force is mistakenly used as the braking positive pressure, and the brake monitoring the disc spring force still can cause the brake failure accident. The caliper disc brake for monitoring the positive braking pressure fundamentally solves the problems of shaft breakage, poor sealing performance and blockage of the traditional disc brake in a hoister and a belt conveyor for a coal mine for decades: firstly, a plurality of external double-head screws replace a central shaft on a lining plate with a barrel to be connected with a brake shoe, so that the fault that the brake cannot be opened due to shaft breakage is avoided; and secondly, one sealing ring on the piston of the cylinder body replaces three sealing rings of the piston, and the small shaft and the large shaft of the cylinder body move concentrically to replace the two shafts of the piston and the three shafts of the shaft with the lining plate of the cylinder body to move concentrically, so that oil leakage and blockage are effectively avoided. According to the provisions of coal safety regulation 426, the K value of the ratio of the braking torque generated by the braking device to the actual maximum load lifting rotating torque is not less than 3, the braking torque is equal to 3 times of the actual maximum load lifting rotating torque, and the braking torque is divided by the friction coefficient and the braking radius to be the allowable value of the braking positive pressure. The utility model solves the problem that the brake for monitoring the disc spring force in the prior art can not monitor the brake positive pressure of the brake shoe pressed on the brake disc, can effectively monitor the brake positive pressure applied to the brake disc by the brake shoe, and takes the monitored brake positive pressure 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 operated, 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, and the next driving is locked, so that the brake performance and the safety reliability of the caliper disc brake are greatly improved. The left brake shoe and the right brake shoe are installed in the brake bases on two sides of the brake disc, and brake of the left brake shoe and the right brake shoe can be realized only by arranging the disc spring group and the oil cylinder on the left side due to the fact that the cylinders with the outlines of the brake bases float in the support holes.
Drawings
Fig. 1 is a structural diagram of a closing braking state of a caliper disc brake for monitoring a brake positive pressure according to the present invention.
Fig. 2 is a structural diagram of the brake-off state of the caliper disc brake for monitoring the brake positive pressure.
In the figure: 1-brake disc, 2-brake shoe, 3-lining board, 4-screw one, 5-barrel, 6-sealing ring, 7-double-threaded screw, 8-key one, 9-disc spring group, 10-brake seat, 11-dust ring, 12-screw two, 13-disc spring seat, 14-screw three, 15-bearing plate, 16-key two, 17-screw four, 18-adjusting nut, 19-right brake shoe, 20-right lining board, 21-braking positive pressure sensor, 21-1-strain sheet, 21-2-signal line, 22-key three, 23-key four, 24-support.
Detailed Description
The utility model will be further described with reference to examples in the drawings to which:
as shown in figure 1 and figure 2, the caliper disc brake for monitoring the positive braking pressure mainly comprises a brake disc 1, a left brake shoe 2, a left lining plate 3, a cylinder 5, a sealing ring 6, a double-headed screw 7, a disc spring group 9, a brake seat 10, a disc spring seat 13, a force bearing plate 15, an adjusting nut 18, a right brake shoe 19, a right lining plate 20, a positive braking pressure sensor 21 and a bracket 24, wherein the outline of the brake seat 10 is of a cylindrical integral structure, the outline cylinder is sleeved on the bracket 24 and is in movable fit with a hole of the bracket 24, a key four 23 is arranged at the matching position, the middle part of the outline cylinder of the brake seat 10 is provided with a groove suitable for placing the brake disc, the brake shoe and the lining plate, the left brake shoe 2, the left lining plate 3, the right brake shoe 19 and the right lining plate 20 are connected through dovetail grooves, the middle part of the left side of the groove is provided with a stepped blind hole which is large in outside and small inside, and the right side is provided with a through hole which has the same axis with the stepped blind hole, the outer circumference of the left side of the brake seat 10 is provided with a plurality of through holes, the through holes are internally provided with double-head screws 7 for connection, two ends of each double-head screw 7 are square, a right-end square shaft is matched with a square hole on a left lining plate (3) and is fixedly connected through a screw I4, a left-end square shaft is matched with a square hole of a bearing plate 15 and is fixedly connected through a screw III 14, gaps are reserved between the left end surface of the brake seat 10 and the bearing plate 15 and between the right end surface of the brake seat 10 and the left lining plate 3, the section of the cylinder body 5 is in a 'towel' shape, two diameter stepped shafts at the non-opening end of the cylinder body 5 are movably matched with a left stepped blind hole of the brake seat 10, a key I8 is arranged at the matching position of a large hole of the brake seat 10, a sealing ring 6 is arranged at the movable matching position of a small hole of the brake seat 10, a gap is reserved at the right end of the small shaft and the bottom of the blind hole, a bowl opening connecting port arranged and combined dish spring group 9 in pair is sleeved on an inner shaft at the opening end of the cylinder body at one opening end of the cylinder body 5, the outer side end of the disc spring group 9 is provided with a disc spring seat 13 which is sleeved on the inner shaft and is fixed on the brake seat 10 through a screw 12, a dustproof ring 11 is arranged between the disc spring seat 13 and the inner shaft, the center hole of the adjusting nut 18 is in threaded connection with the end part of the inner shaft to form a thread pair, a bearing plate 15 arranged between the left end surface of the brake seat 10 and the adjusting nut 18 is a circular ring disc sleeved on the inner shaft of the barrel 5, the inner shaft is in static fit with the hole of the bearing plate 15, a key II 16 is arranged at the fit position, and the bearing plate 15 is connected with the adjusting nut 18 through a screw IV 17; the through hole on the right side of the groove of the brake seat 10 is movably matched with the cylinder of the right lining plate 20, a key III 22 is arranged at the matching position, and a brake positive pressure sensor 21 positioned between the end of the through hole on the right side of the groove and the right lining plate 20 is arranged on the cylinder of the right lining plate 20. The left brake shoe 2, the left lining plate 3, the double-headed screw 7, the bearing plate 15, the adjusting nut 18, the cylinder 5 and the disc spring group 9 form a left brake group; the right brake shoe 19, the right lining plate 20, the brake positive pressure sensor 21 and the brake seat 10 form a right side brake group.
The brake positive pressure sensor 21 is a stepped disc, a central hole of the stepped disc is in movable fit with a column barrel of the right lining plate 20, a left annular groove and a right annular groove are symmetrically arranged on the end face of the disc, a strain gage 21-1 connected with a signal line 21-2 is placed in the left annular groove or the right annular groove, the outer end face of the disc on the left annular groove side is slightly higher than the inner end face and abuts against the right lining plate 20, the inner end face of the disc of the right annular groove is slightly higher than the outer end face, and the inner end face abuts against a through hole end on the right side of the annular groove of the brake base 10. The strain gauges 21-1 are 4-8, and are uniformly distributed on the circular ring at the bottom of the left annular groove or the right annular groove.
Claims (5)
1. A caliper disc brake that monitors positive brake pressure, comprising: brake disc (1), left brake shoe (2), left welt (3), barrel (5), double threaded screw (7), dish spring group (9), brake seat (10), dish spring seat (13), load board (15), adjusting nut (18), right brake shoe (19), right welt (20) and support (24), its characterized in that: the brake seat (10) is of a cylindrical integral structure, a profile cylinder is sleeved on a support (24) and is in movable fit with a hole of the support (24), a key four (23) is arranged at the matching position, a groove suitable for accommodating a brake disc, a brake shoe and a lining plate is formed in the middle of the profile cylinder of the brake seat (10), a left brake shoe (2), a left lining plate (3), a right brake shoe (19) and a right lining plate (20) are connected through dovetail grooves, a stepped blind hole with a large outside and a small inside is formed in the middle of the left side of the groove, a through hole with the same axis as the stepped blind hole of the left side is formed in the right side of the groove, a plurality of through holes are formed in the outer circumference of the left side of the brake seat (10), a double-end screw (7) for connection is arranged in the through hole, two ends of the double-end screw (7) are square, a square shaft at the right end of the double-end is matched with a square hole on the left lining plate (3) and is connected and fixed through a screw one (4), a square shaft at the left end of the double-end is matched with a square hole of a bearing plate (15), the brake is fixedly connected through a third screw (14), gaps are reserved between the left end face of the brake seat (10) and the bearing plate (15) and between the right end face of the brake seat (10) and the left lining plate (3), the section of the barrel body (5) is in a shape of a Chinese character 'ji', two stepped shafts with different diameters at the non-open end of the barrel body (5) are movably matched with the stepped blind hole at the left side of the brake seat (10), a gap is reserved between the right end of the small shaft and the bottom of the stepped blind hole, a disc spring group (9) which is positioned in the barrel body and is provided with bowl openings and bowl openings arranged and combined in pairs is sleeved on an inner shaft at the open end of the barrel body (5), a disc spring seat (13) which is sleeved on the inner shaft and fixed on the brake seat (10) through a screw (12) is arranged at the outer side end of the inner shaft, a central hole of an adjusting nut (18) is in threaded connection with the end of the inner shaft to form a thread pair, the bearing plate (15) arranged between the left end face of the brake seat (10) and the adjusting nut (18) is a circular ring disc sleeved on the inner shaft of the barrel body (5), the inner shaft is statically matched with a hole of a bearing plate (15), a key II (16) is arranged at the matched position, and the bearing plate (15) is connected with an adjusting nut (18) through a screw IV (17); a through hole on the right side of the groove of the brake seat (10) is in movable fit with a cylinder of the right lining plate (20), a key III (22) is arranged at the matching position, and a brake positive pressure sensor (21) positioned between the end of the through hole on the right side of the groove and the right lining plate (20) is arranged on the cylinder of the right lining plate (20); the left brake shoe (2), the left lining plate (3), the double-end screw (7), the bearing plate (15), the adjusting nut (18), the barrel (5) and the disc spring group (9) form a left brake group; the right brake shoe (19), the right lining plate (20), the brake positive pressure sensor (21) and the brake seat (10) form a right side brake group.
2. The caliper disc brake for monitoring positive brake pressure according to claim 1, wherein: the brake positive pressure sensor (21) is a stepped disc, a central hole of the stepped disc is movably matched with a column barrel of the right lining plate (20), a left annular groove and a right annular groove are symmetrically arranged on the end face of the disc, a strain gauge (21-1) connected with a signal line (21-2) is placed in the left annular groove or the right annular groove, the outer end face of the disc on the left annular groove side is slightly higher than the inner end face and abuts against the right lining plate (20), the inner end face of the disc on the right annular groove is slightly higher than the outer end face and abuts against the through hole end on the right side of the annular groove of the brake base (10).
3. The caliper disc brake for monitoring positive brake pressure according to claim 2, wherein: the strain gauges (21-1) are 4-8 and are uniformly distributed on the circular ring at the bottom of the left annular groove or the right annular groove.
4. The caliper disc brake for monitoring positive brake pressure according to claim 1, wherein: and a dustproof ring (11) is arranged between the disc spring seat (13) and the inner shaft.
5. The caliper disc brake for monitoring positive brake pressure according to claim 1, wherein: the large and small diameter stepped shafts at the end, not provided with an opening, of the barrel body (5), a key I (8) is arranged at the matching position of the large shaft and a large hole of the brake seat (10), and a sealing ring (6) is arranged at the movable matching position of the small shaft and a small hole of the brake seat (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120807303.XU CN215487334U (en) | 2021-04-20 | 2021-04-20 | Caliper disc brake for monitoring positive braking pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120807303.XU CN215487334U (en) | 2021-04-20 | 2021-04-20 | Caliper disc brake for monitoring positive braking pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215487334U true CN215487334U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120807303.XU Active CN215487334U (en) | 2021-04-20 | 2021-04-20 | Caliper disc brake for monitoring positive braking pressure |
Country Status (1)
| Country | Link |
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| CN (1) | CN215487334U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112963469A (en) * | 2021-04-20 | 2021-06-15 | 徐州大恒测控技术有限公司 | Caliper disc brake for monitoring positive braking pressure and monitoring method thereof |
| CN112963470A (en) * | 2021-04-20 | 2021-06-15 | 徐州大恒测控技术有限公司 | Floating brake for monitoring brake positive pressure and monitoring method thereof |
-
2021
- 2021-04-20 CN CN202120807303.XU patent/CN215487334U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112963469A (en) * | 2021-04-20 | 2021-06-15 | 徐州大恒测控技术有限公司 | Caliper disc brake for monitoring positive braking pressure and monitoring method thereof |
| CN112963470A (en) * | 2021-04-20 | 2021-06-15 | 徐州大恒测控技术有限公司 | Floating brake for monitoring brake positive pressure and monitoring method thereof |
| CN112963469B (en) * | 2021-04-20 | 2024-05-28 | 平顶山天安煤业股份有限公司五矿 | Caliper disc brake for monitoring braking positive pressure and monitoring method thereof |
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