CN110360250B - Normally closed butterfly brake with automatic compensation reset function - Google Patents
Normally closed butterfly brake with automatic compensation reset function Download PDFInfo
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- CN110360250B CN110360250B CN201910772334.3A CN201910772334A CN110360250B CN 110360250 B CN110360250 B CN 110360250B CN 201910772334 A CN201910772334 A CN 201910772334A CN 110360250 B CN110360250 B CN 110360250B
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- 230000007246 mechanism Effects 0.000 claims abstract description 65
- 238000005299 abrasion Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
- F16D65/54—Slack adjusters mechanical self-acting in one direction for adjusting excessive play by means of direct linear adjustment
- F16D65/546—Slack adjusters mechanical self-acting in one direction for adjusting excessive play by means of direct linear adjustment for mounting within the confines of a drum brake
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
The invention relates to a normally closed butterfly brake with an automatic compensation reset function, which comprises a brake body, a carry compensation component, a withdrawal distance adjusting component, a first elastic component and a withdrawal compensation mechanism, wherein the brake body is provided with a left bracket, a right bracket, a supporting frame, a push rod and an air bag; two ends of the first elastic component are respectively and movably connected with the two return compensation mechanisms; carry compensation components are arranged on the left support and the right support, and the withdrawal adjusting component is connected with the support frame and the two carry compensation components. The friction plate abrasion loss can be automatically compensated, and the brake rod can be automatically reset, so that the constant stroke of the ejector rod is ensured, the braking effect of equipment in working is ensured, and the skill requirement on workers is reduced.
Description
Technical Field
The invention relates to the field of brakes, in particular to a normally closed butterfly brake with an automatic compensation reset function.
Background
The principle of the normally closed butterfly brake used in engineering machinery in the market at present is that after the brake is fixedly arranged on equipment, when the brake is not ventilated, a brake spring in an air bag pushes a piston to press a push rod, so that a left bracket and a right bracket and a left friction plate and a right friction plate clamp a brake disc, and the brake is in a braking mode; after ventilation, the piston resets, drives the ejector rod to retract into the air bag, so that the left friction plate and the right friction plate are separated from the brake disc, and the brake is in a release mode; after the air circuit is cut off, a brake spring in the air bag pushes the piston to press the ejector rod, so that the left and right brackets and the left and right friction plates clamp the brake disc, the brake recovers a braking mode, after the friction plates are worn, the ejector rod can continuously push the left and right brackets to enable the left and right friction plates to compensate the wear amount, the brake disc is continuously clamped, the position of the adjusting screw can be manually adjusted when needed, the stroke of the ejector rod is constant, and the influence on the braking effect caused by the reduction of braking moment due to the compensation wear of the friction plates is avoided.
However, this manual compensation method has a great disadvantage:
1. Because friction plate abrasion is a slow process, the friction plate abrasion is difficult to be perceived by naked eyes, so that technical operators cannot timely monitor and adjust the adjusting screw, the braking force is reduced, and the braking effect is reduced;
2. the friction plate compensation abrasion loss needs to correspondingly and manually adjust the adjusting nut, so that a high operation accuracy requirement is provided for staff, and the braking torque is overlarge due to the fact that the compression quantity of the braking spring is increased due to overlarge adjustment size; the adjusted size is too small, and the compression amount of the braking spring is reduced, so that the braking force is reduced, and the braking torque is reduced.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a normally closed butterfly brake with an automatic compensation reset function so as to overcome the defects in the prior art.
The technical scheme for solving the technical problems is as follows: the normally closed butterfly brake with the automatic compensation and reset functions comprises a brake body, a carry compensation component, a withdrawal adjustment component, a first elastic component and a withdrawal compensation mechanism, wherein the brake body is provided with a left bracket, a right bracket, a support frame, a push rod and an air bag; two ends of the first elastic component are respectively and movably connected with the two return compensation mechanisms; carry compensation components are arranged on the left support and the right support, and the withdrawal adjusting component is connected with the support frame and the two carry compensation components.
In the scheme, the backset compensation mechanism comprises a mounting frame and a unidirectional rotation assembly, wherein the mounting frame is connected with the left bracket through the unidirectional rotation assembly, and the unidirectional rotation assembly is used for limiting the mounting frame in the backset compensation mechanism on the left bracket to rotate anticlockwise relative to the left bracket; or the mounting frame is connected with the right bracket through the unidirectional rotating assembly, and the unidirectional rotating assembly is used for limiting the mounting frame in the withdrawal compensation mechanism on the right bracket to rotate clockwise relative to the left bracket.
In the scheme, the unidirectional rotating assembly is a unidirectional bearing, the outer ring of the unidirectional bearing is connected with the mounting frame, and the inner ring of the unidirectional bearing is connected with the left bracket or the right bracket.
In the above scheme, the carry compensation component comprises an adjusting seat, a third elastic component, a thread bush and a threaded rod, one end of the threaded rod is rotationally connected with the withdrawal adjustment component, the other end of the threaded rod extends into the thread bush from one end of the thread bush and is rotationally combined with the inner wall of the thread bush, the adjusting seat is rotationally connected with the left bracket or the right bracket through a rotating shaft, the adjusting seat is provided with a cavity, one end of the thread bush, far away from the threaded rod, penetrates into the cavity, and the outer circumferential surface of one end of the thread bush extending into the cavity is provided with an outer shoulder; the end face of the outer shoulder, which is far away from the threaded rod, is provided with a first rotation stopping surface, and the cavity wall of the cavity, which is close to the first rotation stopping surface, is provided with a second rotation stopping surface; the third elastic component is arranged in the cavity and is positioned between the outer shoulder and the threaded rod, and two ends of the third elastic component respectively prop against the outer shoulder and the cavity wall of the cavity, so that the first rotation stopping surface is meshed with the second rotation stopping surface, and the threaded sleeve is limited to rotate relative to the adjusting seat.
In the above scheme, the first rotation stopping surface and the second rotation stopping surface are both tooth surfaces.
In the above-mentioned scheme, the range adjustment subassembly includes cell frame, dog, jack-prop and adjusting screw, and the middle part of cell frame is connected with the support frame, and the both ends of cell frame all are equipped with the spout, and the equipartition is equipped with the jack-prop in every spout, and the jack-prop is connected with the threaded rod, and the equipartition is equipped with the dog that limits jack-prop and remove the stroke in the spout in every spout, and the both ends of cell frame all have the adjusting screw soon, and the head of every adjusting screw all is connected with the dog of its place end.
In the scheme, the brake body comprises a left bracket, a right bracket, a support frame, a push rod, an air bag, a brake disc, a left connecting frame, a right connecting frame, a left friction plate, a right friction plate, a left base, a right base and a second elastic component, wherein two ends of the support frame are respectively connected with the left bracket and the right bracket in a rotating way through rotating shafts, and the backing distance adjusting component is connected with the support frame; the both ends of second elastic component are respectively with left socle and right branch frame swing joint, the brake disc is in between left socle and the right branch frame, left friction disc and right friction disc are laid respectively to the left and right sides of brake disc, left base and right base rotate through the pivot respectively and set up on left socle and right branch frame, the one end of left link is rotated through pivot and left base and is connected, the other end of left link links to each other with the pivot of rotating support frame and left socle to be connected, the one end of right link is rotated through pivot and right base to be connected, the other end of right link is rotated the pivot of being connected with support frame and right branch frame.
The beneficial effects of the invention are as follows: when the friction plate is worn, the wear amount of the friction plate can be automatically compensated, and the stroke of the ejector rod is ensured to be constant, so that the braking effect of equipment in working is ensured.
Drawings
FIG. 1 is a schematic diagram of a normally closed butterfly brake with automatic compensation and reset functions according to the present invention;
Fig. 2 is a schematic diagram of a normally closed butterfly brake with an automatic compensation reset function according to the present invention;
FIG. 3 is a schematic diagram of a carry compensation assembly according to the present invention;
FIG. 4 is a schematic structural view of the offset adjustment assembly according to the present invention;
fig. 5 is a schematic view of a structure of a normally closed butterfly brake in the prior art;
fig. 6 is a schematic structural diagram of an air bag in the present invention.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
Example 1
As shown in fig. 1 and 2, a normally closed butterfly brake with an automatic compensation reset function comprises a brake body 1, a carry compensation component 2, a withdrawal adjustment component 3, a first elastic component 4 and a withdrawal compensation mechanism 5, wherein the brake body 1 is provided with a left bracket 101, a right bracket 102, a support frame 103, a push rod 104 and a gas bag 105, the upper end of the left bracket 101 is provided with the withdrawal compensation mechanism 5, the gas bag 105 is rotationally connected with the withdrawal compensation mechanism 5 on the right bracket 102, the upper end of the right bracket 102 is provided with the withdrawal compensation mechanism 5, one end of the push rod 104 is rotationally connected with the withdrawal compensation mechanism 5 on the left bracket 101, and the other end of the push rod 104 is connected with a piston in the gas bag 105; two ends of the first elastic component 4 are respectively and movably connected with the two return compensation mechanisms 5, and in normal cases, two ends of the first elastic component 4 are respectively and rotatably connected with the two return compensation mechanisms 5 through rotating shafts; the left bracket 101 and the right bracket 102 are respectively provided with a carry compensation component 2, and the backing distance adjusting component 3 is connected with the supporting frame 103 and the two carry compensation components 2.
Example 2
As shown in fig. 1 and 2, a normally closed butterfly brake with an automatic compensation reset function comprises a brake body 1, a carry compensation component 2, a withdrawal adjustment component 3, a first elastic component 4 and a withdrawal compensation mechanism 5, wherein the brake body 1 is provided with a left bracket 101, a right bracket 102, a support frame 103, a push rod 104 and a gas bag 105, the upper end of the left bracket 101 is provided with the withdrawal compensation mechanism 5, the upper end of the right bracket 102 is provided with the withdrawal compensation mechanism 5, the gas bag 105 is rotationally connected with the withdrawal compensation mechanism 5 on the right bracket 102, one end of the push rod 104 is rotationally connected with the withdrawal compensation mechanism 5 on the left bracket 101, and the other end of the push rod 104 is connected with a piston in the gas bag 105; two ends of the first elastic component 4 are respectively and movably connected with the two return compensation mechanisms 5, and in normal cases, two ends of the first elastic component 4 are respectively and rotatably connected with the two return compensation mechanisms 5 through rotating shafts; the left bracket 101 and the right bracket 102 are respectively provided with a carry compensation component 2, and the backing distance adjusting component 3 is connected with the supporting frame 103 and the two carry compensation components 2.
The back-position compensation mechanism 5 comprises a mounting frame 501 and a unidirectional rotation component 502, wherein the mounting frame 501 is connected with the left bracket 101 through the unidirectional rotation component 502, and the unidirectional rotation component 502 is used for limiting the mounting frame 501 in the back-position compensation mechanism 5 on the left bracket 101 to rotate anticlockwise relative to the left bracket 101; or, the mounting frame 501 is connected with the right bracket 102 through the unidirectional rotation component 502, and the unidirectional rotation component 502 is used for limiting the mounting frame 501 in the backset compensation mechanism 5 on the right bracket 102 to rotate clockwise relative to the left bracket 101, the unidirectional rotation component 502 is preferably a unidirectional bearing, an outer ring of the unidirectional bearing is connected with the mounting frame 501, and an inner ring of the unidirectional bearing is connected with the left bracket 101 or the right bracket 102.
Example 3
As shown in fig. 1, 2 and 3, a normally closed butterfly brake with an automatic compensation reset function comprises a brake body 1, a carry compensation component 2, a withdrawal adjustment component 3, a first elastic component 4 and a withdrawal compensation mechanism 5, wherein the brake body 1 is provided with a left bracket 101, a right bracket 102, a supporting bracket 103, a push rod 104 and an air bag 105, the upper end of the left bracket 101 is provided with the withdrawal compensation mechanism 5, the upper end of the right bracket 102 is provided with the withdrawal compensation mechanism 5, the air bag 105 is rotationally connected with the withdrawal compensation mechanism 5 on the right bracket 102, one end of the push rod 104 is rotationally connected with the withdrawal compensation mechanism 5 on the left bracket 101, and the other end of the push rod 104 is connected with a piston in the air bag 105; two ends of the first elastic component 4 are respectively and movably connected with the two return compensation mechanisms 5, and in normal cases, two ends of the first elastic component 4 are respectively and rotatably connected with the two return compensation mechanisms 5 through rotating shafts; the left bracket 101 and the right bracket 102 are respectively provided with a carry compensation component 2, and the backing distance adjusting component 3 is connected with the supporting frame 103 and the two carry compensation components 2.
The back-position compensation mechanism 5 comprises a mounting frame 501 and a unidirectional rotation component 502, wherein the mounting frame 501 is connected with the left bracket 101 through the unidirectional rotation component 502, and the unidirectional rotation component 502 is used for limiting the mounting frame 501 in the back-position compensation mechanism 5 on the left bracket 101 to rotate anticlockwise relative to the left bracket 101; or, the mounting frame 501 is connected with the right bracket 102 through the unidirectional rotation component 502, and the unidirectional rotation component 502 is used for limiting the mounting frame 501 in the backset compensation mechanism 5 on the right bracket 102 to rotate clockwise relative to the left bracket 101, the unidirectional rotation component 502 is preferably a unidirectional bearing, an outer ring of the unidirectional bearing is connected with the mounting frame 501, and an inner ring of the unidirectional bearing is connected with the left bracket 101 or the right bracket 102.
The carry compensation assembly 2 comprises an adjusting seat 201, a third elastic assembly 202, a threaded sleeve 203 and a threaded rod 204, one end of the threaded rod 204 is rotationally connected with the withdrawal adjustment assembly 3, the other end of the threaded rod 204 extends into the threaded sleeve 203 from one end of the threaded sleeve 203 and is rotationally combined with the inner wall of the threaded sleeve 203, the adjusting seat 201 is rotationally connected with the left bracket 101 or the right bracket 102 through a rotating shaft, the adjusting seat 201 is provided with a cavity 2011, one end of the threaded sleeve 203 far away from the threaded rod 204 penetrates into the cavity 2011, and the outer circumferential surface of one end of the threaded sleeve 203 extending into the cavity 2011 is provided with an outer shoulder 2031; the end surface of the outer shoulder 2031, which is far away from the threaded rod 204, is provided with a first rotation stopping surface 2032, and the cavity wall of the cavity 2011, which is close to the first rotation stopping surface 2032, is provided with a second rotation stopping surface 2012; the third elastic component 202 is disposed in the cavity 2011, and the third elastic component 202 is located between the outer shoulder 2031 and the threaded rod 204, two ends of the third elastic component 202 respectively abut against the outer shoulder 2031 and a cavity wall of the cavity 2011, so that the first rotation stopping surface 2032 is meshed with the second rotation stopping surface 2012, the rotation of the threaded sleeve 203 relative to the adjusting seat 201 is limited, the third elastic component 202 is always in a compressed state, and the first rotation stopping surface 2032 and the second rotation stopping surface 2012 are preferably tooth surfaces.
Example 4
As shown in fig. 1,2, 3 and 4, a normally closed butterfly brake with an automatic compensation reset function comprises a brake body 1, a carry compensation component 2, a withdrawal adjustment component 3, a first elastic component 4 and a withdrawal compensation mechanism 5, wherein the brake body 1 is provided with a left bracket 101, a right bracket 102, a support bracket 103, a push rod 104 and an air bag 105, the upper end of the left bracket 101 is provided with the withdrawal compensation mechanism 5, the upper end of the right bracket 102 is provided with the withdrawal compensation mechanism 5, the air bag 105 is rotationally connected with the withdrawal compensation mechanism 5 on the right bracket 102, one end of the push rod 104 is rotationally connected with the withdrawal compensation mechanism 5 on the left bracket 101, and the other end of the push rod 104 is connected with a piston in the air bag 105; two ends of the first elastic component 4 are respectively and movably connected with the two return compensation mechanisms 5, and in normal cases, two ends of the first elastic component 4 are respectively and rotatably connected with the two return compensation mechanisms 5 through rotating shafts; the left bracket 101 and the right bracket 102 are respectively provided with a carry compensation component 2, and the backing distance adjusting component 3 is connected with the supporting frame 103 and the two carry compensation components 2.
The back-position compensation mechanism 5 comprises a mounting frame 501 and a unidirectional rotation component 502, wherein the mounting frame 501 is connected with the left bracket 101 through the unidirectional rotation component 502, and the unidirectional rotation component 502 is used for limiting the mounting frame 501 in the back-position compensation mechanism 5 on the left bracket 101 to rotate anticlockwise relative to the left bracket 101; or, the mounting frame 501 is connected with the right bracket 102 through the unidirectional rotation component 502, and the unidirectional rotation component 502 is used for limiting the mounting frame 501 in the backset compensation mechanism 5 on the right bracket 102 to rotate clockwise relative to the left bracket 101, the unidirectional rotation component 502 is preferably a unidirectional bearing, an outer ring of the unidirectional bearing is connected with the mounting frame 501, and an inner ring of the unidirectional bearing is connected with the left bracket 101 or the right bracket 102.
The carry compensation assembly 2 comprises an adjusting seat 201, a third elastic assembly 202, a threaded sleeve 203 and a threaded rod 204, one end of the threaded rod 204 is rotationally connected with the withdrawal adjustment assembly 3, the other end of the threaded rod 204 extends into the threaded sleeve 203 from one end of the threaded sleeve 203 and is rotationally combined with the inner wall of the threaded sleeve 203, the adjusting seat 201 is rotationally connected with the left bracket 101 or the right bracket 102 through a rotating shaft, the adjusting seat 201 is provided with a cavity 2011, one end of the threaded sleeve 203 far away from the threaded rod 204 penetrates into the cavity 2011, and the outer circumferential surface of one end of the threaded sleeve 203 extending into the cavity 2011 is provided with an outer shoulder 2031; the end surface of the outer shoulder 2031, which is far away from the threaded rod 204, is provided with a first rotation stopping surface 2032, and the cavity wall of the cavity 2011, which is close to the first rotation stopping surface 2032, is provided with a second rotation stopping surface 2012; the third elastic component 202 is disposed in the cavity 2011, and the third elastic component 202 is located between the outer shoulder 2031 and the threaded rod 204, two ends of the third elastic component 202 respectively abut against the outer shoulder 2031 and a cavity wall of the cavity 2011, so that the first rotation stopping surface 2032 is meshed with the second rotation stopping surface 2012, the rotation of the threaded sleeve 203 relative to the adjusting seat 201 is limited, the third elastic component 202 is always in a compressed state, and the first rotation stopping surface 2032 and the second rotation stopping surface 2012 are preferably tooth surfaces.
The withdrawal distance adjusting assembly 3 comprises a groove frame 301, a stop block 302, a jack post 303 and adjusting screws 304, wherein the middle part of the groove frame 301 is connected with a supporting frame 103, both ends of the groove frame 301 are respectively provided with a sliding groove 3011, the jack posts 303 are uniformly distributed in each sliding groove 3011 and are connected with a threaded rod 204, the stop blocks 302 for limiting the moving travel of the jack posts 303 in the sliding grooves 3011 are uniformly distributed in each sliding groove 3011, the two ends of the groove frame 301 are respectively screwed with the adjusting screws 304, the head parts of the adjusting screws 304 are respectively connected with the stop blocks 302 at the ends of the adjusting screws, the groove frame 301 is preferably V-shaped, and the middle part of the groove frame 301 is connected with the supporting frame 103 through the screws.
Example 5
As shown in fig. 1,2, 3 and 4, a normally closed butterfly brake with an automatic compensation reset function comprises a brake body 1, a carry compensation component 2, a withdrawal adjustment component 3, a first elastic component 4 and a withdrawal compensation mechanism 5, wherein the brake body 1 is provided with a left bracket 101, a right bracket 102, a support bracket 103, a push rod 104 and an air bag 105, the upper end of the left bracket 101 is provided with the withdrawal compensation mechanism 5, the upper end of the right bracket 102 is provided with the withdrawal compensation mechanism 5, the air bag 105 is rotationally connected with the withdrawal compensation mechanism 5 on the right bracket 102, one end of the push rod 104 is rotationally connected with the withdrawal compensation mechanism 5 on the left bracket 101, and the other end of the push rod 104 is connected with a piston in the air bag 105; two ends of the first elastic component 4 are respectively and movably connected with the two return compensation mechanisms 5, and in normal cases, two ends of the first elastic component 4 are respectively and rotatably connected with the two return compensation mechanisms 5 through rotating shafts; the left bracket 101 and the right bracket 102 are respectively provided with a carry compensation component 2, and the backing distance adjusting component 3 is connected with the supporting frame 103 and the two carry compensation components 2.
The back-position compensation mechanism 5 comprises a mounting frame 501 and a unidirectional rotation component 502, wherein the mounting frame 501 is connected with the left bracket 101 through the unidirectional rotation component 502, and the unidirectional rotation component 502 is used for limiting the mounting frame 501 in the back-position compensation mechanism 5 on the left bracket 101 to rotate anticlockwise relative to the left bracket 101; or, the mounting frame 501 is connected with the right bracket 102 through the unidirectional rotation component 502, and the unidirectional rotation component 502 is used for limiting the mounting frame 501 in the backset compensation mechanism 5 on the right bracket 102 to rotate clockwise relative to the left bracket 101, the unidirectional rotation component 502 is preferably a unidirectional bearing, an outer ring of the unidirectional bearing is connected with the mounting frame 501, and an inner ring of the unidirectional bearing is connected with the left bracket 101 or the right bracket 102.
The carry compensation assembly 2 comprises an adjusting seat 201, a third elastic assembly 202, a threaded sleeve 203 and a threaded rod 204, one end of the threaded rod 204 is rotationally connected with the withdrawal adjustment assembly 3, the other end of the threaded rod 204 extends into the threaded sleeve 203 from one end of the threaded sleeve 203 and is rotationally combined with the inner wall of the threaded sleeve 203, the adjusting seat 201 is rotationally connected with the left bracket 101 or the right bracket 102 through a rotating shaft, the adjusting seat 201 is provided with a cavity 2011, one end of the threaded sleeve 203 far away from the threaded rod 204 penetrates into the cavity 2011, and the outer circumferential surface of one end of the threaded sleeve 203 extending into the cavity 2011 is provided with an outer shoulder 2031; the end surface of the outer shoulder 2031, which is far away from the threaded rod 204, is provided with a first rotation stopping surface 2032, and the cavity wall of the cavity 2011, which is close to the first rotation stopping surface 2032, is provided with a second rotation stopping surface 2012; the third elastic component 202 is disposed in the cavity 2011, and the third elastic component 202 is located between the outer shoulder 2031 and the threaded rod 204, two ends of the third elastic component 202 respectively abut against the outer shoulder 2031 and a cavity wall of the cavity 2011, so that the first rotation stopping surface 2032 is meshed with the second rotation stopping surface 2012, the rotation of the threaded sleeve 203 relative to the adjusting seat 201 is limited, the third elastic component 202 is always in a compressed state, and the first rotation stopping surface 2032 and the second rotation stopping surface 2012 are preferably tooth surfaces.
The withdrawal distance adjusting assembly 3 comprises a groove frame 301, a stop block 302, a jack post 303 and adjusting screws 304, wherein the middle part of the groove frame 301 is connected with the support frame 103, both ends of the groove frame 301 are respectively provided with a chute 3011, the jack posts 303 are uniformly distributed in each chute 3011 and are connected with the threaded rod 204, the stop blocks 302 for limiting the moving stroke of the jack posts 303 in the chute 3011 are uniformly distributed in each chute 3011, the two ends of the groove frame 301 are respectively screwed with the adjusting screws 304, and the head parts of the adjusting screws 304 are respectively connected with the stop blocks 302 at the ends of the adjusting screws 304.
The brake body 1 comprises a left bracket 101, a right bracket 102, a support frame 103, a push rod 104, an air bag 105, a brake disc 106, a left connecting frame 107, a right connecting frame 108, a left friction plate 109, a right friction plate 1010, a left base 1011, a right base 1012 and a second elastic component 1013, wherein two ends of the support frame 103 are respectively connected with the left bracket 101 and the right bracket 102 in a rotating way through rotating shafts, and a withdrawal adjustment component 3 is connected with the support frame 103; the both ends of second spring assembly 1013 are respectively with left socle 101 and right branch frame 102 swing joint, brake disc 106 is in between left socle 101 and right branch frame 102, left friction disc 109 and right friction disc 1010 are laid respectively to the left and right sides of brake disc 106, left base 1011 and right base 1012 are rotated through the pivot and are set up on left socle 101 and right branch frame 102 respectively, the one end of left link 107 is rotated through the pivot with left base 1011 and is connected, the other end of left link 107 is connected with the pivot with support frame 103 and left socle 101 rotation connection, the one end of right link 108 is rotated through the pivot with right base 1012 and is connected, the other end of right link 108 is connected with the pivot with support frame 103 and right branch frame 102 rotation connection, air pocket 105 is rotated with the mounting bracket 501 in the backset compensating mechanism 5 on the right branch frame 102.
As shown in fig. 6, a brake spring and a piston are arranged in the air bag 105, and in the braking process, the brake spring compresses and pushes the piston, the piston moves leftwards together with the ejector rod 104, and when a pressure source is introduced, the ejector rod 104 is retracted.
The working principle of the carry compensation assembly 2 is now described as follows:
When the teeth are meshed, the threaded sleeve 203 cannot rotate, the threaded rod 204 is penetrated by the top column 303, the top column 303 is clamped in the sliding groove 3011, the threaded rod 204 is limited to rotate, the top column 303 can only move in the sliding groove 3011, the threaded rod 204 is connected with the threaded sleeve 203 through threads, and when the first rotation stopping surface 2032 and the second rotation stopping surface 2012 are meshed, no relative rotation exists;
When the brake is closed, as shown in fig. 1, the ejector rod 104 pushes the mounting frame 501 on the left bracket 101 to move leftwards, and the mounting frame 501 in the back position compensating mechanism 5 on the left bracket 101 is limited to rotate anticlockwise relative to the left bracket 101 through the unidirectional rotation component 502, but not limited to rotate clockwise, so that torque can be transmitted to the left bracket 101 in braking action, the left bracket 101 moves leftwards together with the carry compensating component 2 until the left friction plate 109 presses the brake disc 106, similarly, the right friction plate 1010 on the right bracket 102 presses the brake disc 106 to enter a braking state, when the friction plate starts to wear, the ejector rod 104 can continue to enable the left bracket 101 to move leftwards, when the ejector rod 303 moves to the stop block 302 in the sliding groove 3011, the movement of the ejector rod 303 and the threaded rod 204 leftwards is limited by the groove 301, at the moment, the first stop surface 2032 starts to break away from the limitation of the second stop surface, the threaded sleeve 203 continues to move leftwards along with the adjusting seat 201 under the pushing of the third elastic component 202, at the moment, the threaded rod 204 can rotate leftwards relative to the threaded sleeve 203 until the compensation friction plate is compensated for wear amount, and automatic wear compensation is realized;
supplementary explanation:
1, the engagement of the first rotation stopping surface 2032 and the second rotation stopping surface 2012 performs circumferential limit, and only after the tooth surface is disengaged, the non-self-locking property of the thread is activated, so that free rotation can be performed;
2, the thread bush 203 is a multi-thread, 3 threads are common in the market, the thread pitch of a single thread becomes multiple due to the increase of the number of threads, the thread inclination angle becomes large, the self-locking function of the thread disappears, the common multi-thread has no self-locking function in the circumferential direction, the thread bush can rotate freely, and the thread bush is more common in circumferential limitation by matching with end face teeth during use.
The backing distance adjusting assembly 3, the stop block 302 is fixed at the end part of the adjusting screw 304, the jacking column 303 can move in the chute 3011, the moving stroke is X, the X can be adjusted through the adjusting screw 304, the chute frame 301 is fixed on the supporting frame 103, and when the brake is closed, the jacking column 303 is always attached to the stop block 302 as long as the friction plate is automatically compensated according to the analysis; when the brake is opened, when a pressure source is introduced, the ejector rod 104 is retracted, at the moment, the system only has the restoring force of the spring, the third elastic component 202 is compressed, the first rotation stopping surface 2032 is meshed with the second rotation stopping surface 2012, the left bracket 101 moves rightwards with the carry compensation component 2 under the action of the second elastic component 1013 until the ejector column 303 reaches the side of the chute 3011 far away from the stop block 302, at the moment, the withdrawal distance d reaches the maximum value, namely, the friction plate is worn from automatic compensation to release to the maximum withdrawal distance corresponding to the distance X from the stop block 302 to the side of the chute 3011 far away from the stop block 302, so that the device realizes that the return withdrawal distance d of the friction plate is constant every time, and can also control the withdrawal distance d by adjusting X through the adjusting screw 304.
For each embodiment, the first elastic member 4, the third elastic member 202, and the second elastic member 1013 may be springs.
During the use process:
1. when the brake is closed, as shown in fig. 1, when the left friction plate 109 and the right friction plate 1010 start to wear, the friction plates can complete automatic compensation under the drive of the backing adjustment assembly 3;
2. After the brake is opened, as shown in fig. 2, the brake body 1 can be automatically reset under the drive of the carry compensation component 2 and the first elastic component 4 without manual operation,
Because of the existence of the carry compensation component 2 and the withdrawal compensation mechanism 5, the angle difference between the left bracket 101, the right bracket 102 and the mounting frame 501 caused by the abrasion of the left friction plate 109 and the right friction plate 1010 can be compensated on the unidirectional rotation component 502, that is to say, the abrasion of the friction plate is more or less, the left bracket 101, the right bracket 102 and the mounting frame 501 can be correspondingly adjusted, the restoring is not influenced by the abrasion of the friction plate, and the withdrawal distance is kept constant, so that the automatic restoring problem is solved, the restoring accuracy is ensured, and the original braking effect is maintained.
Description: when the closing finger is not ventilated, the ejector rod 104 is pushed out, the left friction plate 109 and the right friction plate 1010 press the brake disc 106, and the brake enters a braking state; when the brake is opened, the ejector rod 104 is retracted under the action of the air bag 105 when the pressure source is introduced, and the brake is in a release state.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (4)
1. The normally closed butterfly brake with the automatic compensation reset function is characterized by comprising a brake body (1), a carry compensation component (2), a withdrawal distance adjusting component (3), a first elastic component (4) and a withdrawal compensation mechanism (5), wherein the brake body (1) is provided with a left support (101), a right support (102), a support frame (103), a push rod (104) and an air bag (105), the upper ends of the left support (101) and the right support (102) are respectively provided with the withdrawal compensation mechanism (5), the air bag (105) is rotationally connected with the withdrawal compensation mechanism (5) on the right support (102), one end of the push rod (104) is rotationally connected with the withdrawal compensation mechanism (5) on the left support (101), and the other end of the push rod (104) is connected with a piston in the air bag (105);
Two ends of the first elastic component (4) are respectively and movably connected with the two return compensation mechanisms (5); the left support (101) and the right support (102) are respectively provided with the carry compensation component (2), and the back distance adjusting component (3) is connected with the support frame (103) and the two carry compensation components (2); the backset compensation mechanism (5) comprises a mounting frame (501) and a unidirectional rotation assembly (502), wherein the mounting frame (501) is connected with the left bracket (101) through the unidirectional rotation assembly (502), and the unidirectional rotation assembly (502) is used for limiting the mounting frame (501) in the backset compensation mechanism (5) on the left bracket (101) to rotate anticlockwise relative to the left bracket (101); or, the mounting frame (501) is connected with the right bracket (102) through a unidirectional rotating component (502), and the unidirectional rotating component (502) is used for limiting the mounting frame (501) in the withdrawal compensating mechanism (5) on the right bracket (102) to rotate clockwise relative to the left bracket (101), and the unidirectional rotating component (502) is a unidirectional bearing;
The carry compensation assembly (2) comprises an adjustment seat (201), a third elastic assembly (202), a thread sleeve (203) and a threaded rod (204), one end of the threaded rod (204) is rotationally connected with the withdrawal adjustment assembly (3), the other end of the threaded rod (204) extends into the thread sleeve (203) from one end of the thread sleeve (203) and is rotationally combined with the inner wall of the thread sleeve (203), the adjustment seat (201) is rotationally connected with the left bracket (101) or the right bracket (102) through a rotating shaft, the adjustment seat (201) is provided with a cavity (2011), one end, far away from the threaded rod (204), of the thread sleeve (203) penetrates into the cavity (2011), and the outer circumferential surface of one end, extending into the cavity (2011), of the thread sleeve (203) is provided with an outer shoulder (2031); the end face, far away from the threaded rod (204), of the outer shoulder (2031) is provided with a first rotation stopping surface (2032), and the cavity wall, close to the first rotation stopping surface (2032), of the cavity (2011) is provided with a second rotation stopping surface (2012); the third elastic component (202) is arranged in the cavity (2011) and is positioned between the outer shoulder (2031) and the threaded rod (204), and two ends of the third elastic component (202) respectively prop against the outer shoulder (2031) and the cavity wall of the cavity (2011) so as to enable the first rotation stopping surface (2032) to be meshed with the second rotation stopping surface (2012) to limit the threaded sleeve (203) to rotate relative to the adjusting seat (201);
The backing distance adjusting assembly (3) comprises a groove frame (301), a stop block (302), a jack post (303) and adjusting screws (304), the middle part of the groove frame (301) is connected with the supporting frame (103), sliding grooves (3011) are formed in two ends of the groove frame (301), the jack posts (303) are uniformly distributed in each sliding groove (3011), the jack posts (303) are connected with the threaded rods (204), the stop blocks (302) for limiting the moving stroke of the jack posts (303) in the sliding grooves (3011) are uniformly distributed in each sliding groove (3011), the two ends of the groove frame (301) are respectively screwed with the adjusting screws (304), and the heads of the adjusting screws (304) are connected with the stop blocks (302) at the ends of the adjusting screws.
2. The normally closed butterfly brake with an automatic compensation reset function according to claim 1, wherein the unidirectional rotation assembly (502) is a unidirectional bearing, an outer ring of the unidirectional bearing is connected with the mounting frame (501), and an inner ring of the unidirectional bearing is connected with the left bracket (101) or the right bracket (102).
3. The normally closed butterfly brake with an automatic compensation return function according to claim 1, wherein the first rotation stopping surface (2032) and the second rotation stopping surface (2012) are both tooth surfaces.
4. The normally closed butterfly brake with the automatic compensation reset function according to claim 1, wherein the brake body (1) comprises a left bracket (101), a right bracket (102), a support frame (103), a push rod (104), an air bag (105), a brake disc (106), a left connecting frame (107), a right connecting frame (108), a left friction plate (109), a right friction plate (1010), a left base (1011), a right base (1012) and a second elastic component (1013), two ends of the support frame (103) are respectively connected with the left bracket (101) and the right bracket (102) in a rotating way through rotating shafts, and the offset adjustment component (3) is connected with the support frame (103); the two ends of the second elastic component (1013) are respectively and movably connected with the left support (101) and the right support (102), the brake disc (106) is located between the left support (101) and the right support (102), the left friction plate (109) and the right friction plate (1010) are respectively arranged on the left side and the right side of the brake disc (106), the left base (1011) and the right base (1012) are respectively and rotatably arranged on the left support (101) and the right support (102) through rotating shafts, one end of the left connecting frame (107) is rotatably connected with the left base (1011) through rotating shafts, the other end of the left connecting frame (107) is connected with the rotating shafts which are rotatably connected with the left support (103) and the left support (101), one end of the right connecting frame (108) is rotatably connected with the right base (1012) through rotating shafts, and the other end of the right connecting frame (108) is connected with the rotating shafts which are rotatably connected with the support (103) and the right support (102).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910772334.3A CN110360250B (en) | 2019-08-21 | 2019-08-21 | Normally closed butterfly brake with automatic compensation reset function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910772334.3A CN110360250B (en) | 2019-08-21 | 2019-08-21 | Normally closed butterfly brake with automatic compensation reset function |
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| CN110360250A CN110360250A (en) | 2019-10-22 |
| CN110360250B true CN110360250B (en) | 2024-04-26 |
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| CN201910772334.3A Active CN110360250B (en) | 2019-08-21 | 2019-08-21 | Normally closed butterfly brake with automatic compensation reset function |
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| GB1480017A (en) * | 1974-09-17 | 1977-07-20 | Dba Sa | Hydraulically operated drum brake |
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| US4452344A (en) * | 1981-01-30 | 1984-06-05 | Societe Anonyme Dba | Drum brake |
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| CN203627607U (en) * | 2013-10-30 | 2014-06-04 | 焦作市制动器开发有限公司 | Hydraulic caliper disc brake with self compensation function |
| CN207830419U (en) * | 2017-12-27 | 2018-09-07 | 杨香文 | Automatic compensation type mechanical brake device |
| CN210830254U (en) * | 2019-08-21 | 2020-06-23 | 上海韩东机械科技有限公司 | Normally closed butterfly brake with automatic compensation reset function |
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- 2019-08-21 CN CN201910772334.3A patent/CN110360250B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1480017A (en) * | 1974-09-17 | 1977-07-20 | Dba Sa | Hydraulically operated drum brake |
| FR2389042A1 (en) * | 1977-04-27 | 1978-11-24 | Lamendin Louis | Compressed air brake for road vehicle - has self-adjusting ratchet lever to take up brake lining wear |
| US4452344A (en) * | 1981-01-30 | 1984-06-05 | Societe Anonyme Dba | Drum brake |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110360250A (en) | 2019-10-22 |
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