CN116928250B - Gap adjusting device is preset to brake gap automatic adjustment arm - Google Patents
Gap adjusting device is preset to brake gap automatic adjustment arm Download PDFInfo
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- CN116928250B CN116928250B CN202311141465.4A CN202311141465A CN116928250B CN 116928250 B CN116928250 B CN 116928250B CN 202311141465 A CN202311141465 A CN 202311141465A CN 116928250 B CN116928250 B CN 116928250B
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- box
- clamping
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 122
- 229910052742 iron Inorganic materials 0.000 claims description 61
- 239000011888 foil Substances 0.000 claims description 38
- 239000002184 metal Substances 0.000 claims description 38
- 229910052751 metal Inorganic materials 0.000 claims description 38
- 239000000843 powder Substances 0.000 claims description 24
- 208000024780 Urticaria Diseases 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 description 6
- 206010000369 Accident Diseases 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- PMVSDNDAUGGCCE-TYYBGVCCSA-L Ferrous fumarate Chemical compound [Fe+2].[O-]C(=O)\C=C\C([O-])=O PMVSDNDAUGGCCE-TYYBGVCCSA-L 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000006467 substitution reaction 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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- 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
-
- 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
- F16D65/78—Features relating to cooling
- F16D65/82—Features relating to cooling for internally-engaging brakes
- F16D65/827—Features relating to cooling for internally-engaging brakes with open cooling system, e.g. cooled by air
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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
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D66/02—Apparatus for indicating wear
- F16D66/021—Apparatus for indicating wear using electrical detection or indication means
- F16D66/022—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a preset gap adjusting device of an automatic brake gap adjusting arm, which relates to the technical field of automobile part manufacturing.
Description
Technical Field
The invention relates to the technical field of automobile part manufacturing, in particular to a preset gap adjusting device of an automatic brake gap adjusting arm.
Background
The existing brake system mainly comprises a drum brake and a disc brake, wherein the drum brake is used for extruding a friction brake drum through a brake pad, so that a tire externally connected with the brake drum stops rotating, the purpose of braking is achieved, the brake pad can be worn after being braked for many times, therefore, the gap between the brake pad and the brake drum needs to be adjusted in time, the brake gap is always kept within a design range, and at present, the preset gap adjustment of the brake gap is generally performed manually, but the manual adjustment error is large, and the time and the labor are wasted.
The preset gap adjusting device for the automatic brake gap adjusting arm comprises a gas booster pump, a gas storage tank, a PLC and a gas charging and discharging electromagnetic valve, wherein the outlet of the gas booster pump is connected with the inlet of the gas storage tank, the outlet of the gas storage tank is connected with an air outlet pipe, the air outlet pipe is connected with the inlet of the gas charging and discharging electromagnetic valve, and the outlet of the gas charging and discharging electromagnetic valve is connected to a driving air chamber interface of an axle through a connecting pipe; the inflation and deflation electromagnetic valve is connected with the PLC; the PLC controls the on-off of the air charging and discharging electromagnetic valve respectively to realize the air charging and discharging of the vehicle driving air chamber of the vehicle axle, so as to drive the automatic brake clearance adjusting arm of the vehicle axle to adjust the preset clearance; the manual adjustment is not needed, so that the working efficiency is greatly improved, and the error is reduced;
The brake interval can not be automatically adjusted before the next brake according to the abrasion degree of the brake pad although the efficiency is higher than that of manual adjustment, and equipment such as a booster pump, an air storage tank, a PLC, an inflation and deflation electromagnetic valve and the like is adopted, so that the cost is higher.
Disclosure of Invention
The invention aims to provide a preset gap adjusting device of an automatic brake gap adjusting arm, which aims to solve the problems of the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a clearance adjusting device is preset to brake clearance automatic adjustment arm, includes brake chassis, brake chassis's inside activity has cup jointed the brake drum, two iron welts of inside symmetry slidable mounting on brake chassis, the fixed brake block that is provided with of lateral surface that is close to the brake drum of iron welt, brake chassis's inside is fixed to be provided with the brake cylinder, the both ends output of brake cylinder contacts with the tip of two iron welts respectively, two fixedly connected with return spring still includes between the iron welt:
The brake intermittent adjusting assembly is used for adjusting the gap between the brake pad and the brake drum and is fixedly arranged between the two iron lining plates;
The pair of safety components are symmetrically and fixedly arranged on the inner side surfaces of the two iron lining plates respectively.
Preferably, the brake clearance adjustment assembly comprises an adjusting box and a connecting rod, one end of the adjusting box is arranged at the end part of an iron lining plate through a connecting rod thread, a sliding plate is sleeved in the adjusting box in a movable mode, one side face of the sliding plate is fixedly connected with a connecting column, one end of the connecting column movably penetrates through one side plate of the adjusting box and is arranged at the end part of another iron lining plate in a threaded mode, a clamping box is arranged on the bottom plate of the adjusting box in a penetrating mode, a plurality of sliding grooves are arranged on the bottom plate of the clamping box in a staggered mode in a stepped mode, a limiting part is arranged in the sliding groove in a sliding mode, a second spring is fixedly connected between the limiting part and the sliding groove, a clamping part matched with the limiting part is fixedly arranged in the sliding plate, and the bottom end of the clamping part movably extends to the inside of the clamping box.
Preferably, the limiting piece comprises a sliding barrel, the sliding barrel is slidably mounted in the sliding groove, a T-shaped column is slidably sleeved in the sliding barrel, a third spring is fixedly connected between the bottom end of the T-shaped column and the sliding barrel, and the top end of the T-shaped column slidably penetrates through the top plate of the sliding barrel and is arranged to be an arc end.
Preferably, the clamping piece comprises a mounting groove, the mounting groove is formed in the sliding plate, a pressing plate is slidably mounted in the mounting groove, a clamping plate is fixedly connected to the bottom of the pressing plate, the bottom end of the clamping plate penetrates through the inner wall of the bottom of the mounting groove in a sliding mode and extends to the inside of the clamping box, the bottom end of the clamping plate is wedge-shaped, a first spring is fixedly connected between the top surface of the pressing plate and the inner wall of the mounting groove, a cam is rotatably mounted on the inner side wall of the mounting groove, the protruding end of the cam abuts against the pressing plate, a rotating shaft is movably sleeved in the cam, a sliding block is fixedly arranged outside the rotating shaft, the sliding block is slidably mounted on the inner wall of the cam, one end, far away from the brake chassis, of the rotating shaft penetrates through one side wall of the mounting groove in a sliding mode, is fixedly connected with a threaded column, a threaded cylinder is sleeved on the outer thread cylinder, and the threaded cylinder is fixedly mounted on the outer portion of the adjusting box;
the distance between the clamping plate and one T-shaped column closest to the cam is equal to the inner diameter length of the sliding groove and is equal to twice the distance between the brake drum and the adjacent brake pad.
Preferably, a limiting piece is embedded and installed at one end, close to the connecting column, of the bottom plate of the card box, a first metal foil is embedded and installed at one side face of the T-shaped column corresponding to the limiting piece, a second metal foil matched with the first metal foil is arranged on a side plate of the sliding cylinder corresponding to the limiting piece in a penetrating mode, an alarm module is fixedly arranged at the bottom of the card box, and the first metal foil and the second metal foil are electrically connected with the alarm module.
Preferably, the safety assembly comprises a first coil spring and a second coil spring, the inner side surface of the iron lining plate is rotatably provided with a rotary drum through the first coil spring, dry powder for extinguishing fire is stored in the rotary drum, a plurality of fan blades are fixedly connected to the outer part of the rotary drum, the inner parts of the fan blades are hollow and are communicated with the inner part of the rotary drum, and a plurality of discharging grooves which are convenient for the dry powder to be thrown out are formed in the outer side end of the rotary drum.
Preferably, a group of mounting plates are fixedly mounted on the side wall of the iron lining plate, ratchets meshed with the fan blades are rotatably mounted between the two mounting plates through a second coil spring, a heat conducting box for storing heat conducting liquid is fixedly mounted between the two mounting plates, one side surface of the heat conducting box is attached to the side wall of the iron lining plate, one side plate, close to the ratchets, of the heat conducting box is arranged into a concave arc shape, and the bottom end of the concave arc-shaped side plate of the heat conducting box is pressed against the inner concave surface of the ratchets.
Preferably, the piston column is hermetically and slidingly arranged in the bottom end of the concave arc-shaped side plate of the mounting plate, and the outer side end of the piston column slidingly extends to the outside of the heat conduction box and is contacted with the inner concave surface of the ratchet.
Preferably, a cylindrical block attached to the inner wall of the fan blade is movably arranged in the fan blade, and a fourth spring is fixedly connected between the cylindrical block and the outer end part of the fan blade.
Preferably, a handle which is convenient for rotation is fixedly connected to the outer side part of the rotary drum.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the invention, the T-shaped column is extruded by the clamping plate and passes through the T-shaped column, the T-shaped column can rebound after the clamping plate passes through, when stopping braking, the two iron lining plates slide back, the straight surface of the clamping plate contacts with the T-shaped column, the T-shaped column cannot be extruded and passed through again, the T-shaped column can be driven to slide to the inner wall of the other side of the sliding groove, at the moment, the clamping plate and the T-shaped column are mutually propped and cannot slide to the original position, the two iron lining plates stop sliding along with the T-shaped column, and as the length of the sliding groove is set to be twice the distance between the original brake pad and the brake drum, the sum of the width of the T-shaped column and the distance between the first sliding groove and the inner wall of the clamping box is the distance compensation for the wearing thickness of the brake pad;
2. According to the invention, the sliding grooves are arranged in a stepwise staggered manner, so that the more the abrasion thickness of the brake pad is increased, the more the sliding plate and the adjusting box slide relatively, the more the number of T-shaped columns the clamping plate passes over, and the larger the distance between the clamping plate and the original position, so that the positions of the two iron lining plates are adjusted in a proportional manner according to the abrasion degree of the brake pad, and the braking distance is automatically adjusted;
3. According to the invention, the alarm module is arranged, when the brake pad is about to be worn to the greatest extent, the clamping plate is just close to and extrudes the last T-shaped column, the T-shaped column is provided with the first metal foil, when the T-shaped column is extruded to slide downwards, the first metal foil is contacted with the second metal foil arranged on the corresponding slide cylinder, and the first metal foil, the second metal foil and the alarm module are electrically connected, so that when the first metal foil is contacted with the second metal foil, the alarm module is started, and an alarm is given, so that a vehicle owner is reminded of replacing a new brake pad in time;
4. according to the invention, the screw thread column is rotated ninety degrees anticlockwise, so that the rotating shaft rotates along with the screw thread column, the protruding end of the cam is separated from the pressing plate, the pressing plate drives the clamping plate to move upwards under the action of the restoring force of the first spring, the clamping plate is not contacted with the T-shaped column to be pressed, so that the two iron lining plates drive the sliding plate and the adjusting box to slide back to the original positions under the action of the elastic force of the return spring, at the moment, the cam is rotated back to the original positions through the screw thread column, the protruding end of the cam is pushed out of the pressing plate and the clamping plate downwards again, the resetting work of the brake clearance adjusting assembly is completed, and the assembly is convenient to recycle;
5. According to the invention, the ratchets meshed with the fan blades are arranged, the rotary drum and the fan blades can only rotate reversely and cannot rotate positively, so that after the rotary drum rotates reversely for a plurality of circles, the first coil spring restoring force cannot enable the fan blades to rotate back to the original position, because the heat conducting liquid is stored in the heat conducting box and is adhered to the side wall of the iron lining plate, when the brake pad rubs against the brake drum to cause a fire, the temperature of the iron lining plate is suddenly increased, the heat conducting liquid in the heat conducting box expands, so that the piston column is pushed outwards, the outer side end of the piston column slides out and pushes the ratchets upwards, and when the ratchets are pushed out to pass over the fan blades, the rotary drum and the fan blades start to rotate rapidly under the restoring force of the first coil spring, so that air flow is generated, and the heat dissipation is fast combined with the self-contained pore of the brake chassis;
6. According to the invention, the cylindrical block is pressed by the fourth spring, so that dry powder and the discharge chute are isolated, most of dry powder cannot flow out of the discharge chute arranged at the tail end of the fan blade in a normal state, when the fan blade rotates rapidly, the cylindrical block slides to the tail end of the fan blade under the action of centrifugal force, and the dry powder enters the inside of the fan blade under the action of the centrifugal force, so that the blocking of the cylindrical block is reduced, most of dry powder is thrown out of the discharge chute, and therefore, the dry powder falls to the inner wall of the brake drum, and when the brake block rubs with the inner wall of the brake drum to generate sparks, the fallen dry powder can extinguish the sparks in time, thereby preventing larger fire accidents.
Drawings
FIG. 1 is a first perspective view of the present invention;
FIG. 2 is a second perspective view of the present invention;
FIG. 3 is a front cross-sectional view of the present invention;
FIG. 4 is a schematic view of the first portion of FIG. 3 according to the present invention;
FIG. 5 is a schematic view of a second portion of the structure of FIG. 3 according to the present invention;
FIG. 6 is a top cross-sectional view of the card case of the present invention;
FIG. 7 is a partial cross-sectional view of the adjustment box of the present invention;
fig. 8 is an enlarged schematic view of the structure of fig. 5a in accordance with the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. A brake chassis; 11. A brake drum;
2. an iron lining plate; 21. A brake pad;
3. Braking wheel cylinders;
4. a return spring;
5. An adjusting box; 51. a connecting rod; 52. a slide plate; 53. a connecting column; 54. a mounting groove; 55. a rotating shaft; 551. a slide block; 56. a cam; 57. a first spring; 58. a pressing plate; 59. a clamping plate;
6. a card box; 61. a chute; 62. a slide cylinder; 63. a second spring; 64. a T-shaped column; 65. a third spring; 66. an alarm module; 67. a first metal foil; 68. a second metal foil;
7. A rotating drum; 71. a first coil spring; 72. a fan blade; 721. a discharge chute; 73. a cylindrical block; 74. a fourth spring; 75. a handle;
8. A mounting plate; 81. a second coil spring; 82. a ratchet; 83. a heat conduction box; 84. a piston column;
9. a thread cylinder; 91. and (5) a threaded column.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 8, the present invention provides a technical solution:
The utility model provides a gap adjusting device is preset to automatic brake clearance adjustment arm, includes brake chassis 1, brake chassis 1's inside activity has cup jointed brake drum 11, two iron welts 2 are installed to the inside symmetry slidable mounting of brake chassis 1, iron welts 2 are close to the fixed brake block 21 that is provided with of lateral surface of brake drum 11, brake chassis 1's inside is fixed and is provided with brake cylinder 3, the both ends output of brake cylinder 3 contacts with the tip of two iron welts 2 respectively, two fixedly connected with return spring 4 between the iron welts 2 still includes:
The brake gap adjusting assembly is used for adjusting the gap between the brake pad 21 and the brake drum 11 and is fixedly arranged between the two iron lining plates 2;
The pair of safety components for preventing fire are symmetrically and fixedly arranged on the inner sides of the two iron lining plates 2 respectively.
First embodiment
The brake clearance adjusting assembly comprises an adjusting box 5 and a connecting rod 51, one end of the adjusting box 5 is arranged at the end part of one iron lining plate 2 through the connecting rod 51 in a threaded manner, a sliding plate 52 is movably sleeved in the adjusting box 5, one side surface of the sliding plate 52 is fixedly connected with a connecting column 53, one end of the connecting column 53 movably penetrates through one side plate of the adjusting box 5 and is arranged at the end part of the other iron lining plate 2 in a threaded manner, a clamping box 6 is arranged on a bottom plate of the adjusting box 5 in a penetrating manner, a plurality of sliding grooves 61 are arranged on the bottom plate of the clamping box 6 in a stepped staggered manner, a limiting piece is slidably arranged in the sliding groove 61, a second spring 63 is fixedly connected between the limiting piece and the sliding groove 61, a clamping piece matched with the limiting piece is fixedly arranged in the sliding plate 52, and the bottom end of the clamping piece movably extends to the inside of the clamping box 6;
The limiting piece comprises a sliding cylinder 62, the sliding cylinder 62 is slidably mounted in the sliding groove 61, a T-shaped column 64 is slidably sleeved in the sliding cylinder 62, a third spring 65 is fixedly connected between the bottom end of the T-shaped column 64 and the sliding cylinder 62, and the top end of the T-shaped column 64 slidably penetrates through the top plate of the sliding cylinder 62 and is set to be an arc end;
The clamping piece comprises a mounting groove 54, a mounting groove 54 is formed in the sliding plate 52, a pressing plate 58 is slidably mounted in the mounting groove 54, a clamping plate 59 is fixedly connected to the bottom of the pressing plate 58, the bottom end of the clamping plate 59 penetrates through the inner wall of the bottom of the mounting groove 54 in a sliding mode and extends into the clamping box 6, a first spring 57 is fixedly connected between the top surface of the pressing plate 58 and the inner wall of the mounting groove 54, a cam 56 is rotatably mounted on the inner wall of the mounting groove 54, the protruding end of the cam 56 is pressed against the pressing plate 58, a rotating shaft 55 is movably sleeved in the cam 56, a sliding block 551 is fixedly arranged outside the rotating shaft 55, the sliding block 551 is slidably mounted on the inner wall of the cam 56, one end, far away from the brake chassis 1, of the rotating shaft 55 penetrates through one side wall of the mounting groove 54 in a sliding mode, and is fixedly connected with a threaded column 91, the external thread of the threaded column 9 is fixedly sleeved outside the adjusting box 5;
the spacing of the catch plate 59 from the one of the T-shaped posts 64 nearest the cam 56 is equal to the inner diameter length of the slide slot 61 and is equal to twice the spacing of the brake drum 11 from the adjacent brake pad 21.
In operation, because the distance from the clamping plate 59 to the nearest T-shaped column 64 is twice the original braking distance, when the two iron lining plates 2 slide to two sides for braking, the connecting rods 51 and the connecting columns 53 which are respectively connected with the two iron lining plates 2 in a threaded way drive the adjusting boxes 5 and the sliding plates 52 to move towards each other, when the brake pads 21 contact the brake drum 11, the clamping plate 59 arranged at the bottom of the sliding plates 52 just contacts with the first T-shaped column 64, when braking is stopped, the two iron lining plates 2 slide to the original position under the action of the restoring force of the return springs 4, the sliding plates 52 and the adjusting boxes 5 also slide to the original position relatively, but when the two brake pads 21 wear, the two iron lining plates 2 need to slide outwards for more distances when braking next time, so that the purpose of successful braking can be achieved, the slide plate 52 and the adjusting box 5 slide in opposite directions by the same distance, the thickness of the T-shaped column 64 is smaller, the top end of the T-shaped column 64 is arc-shaped, the bottom end of the clamping plate 59 is wedge-shaped, the clamping plate 59 presses against the elasticity of the third spring 65 and passes through the T-shaped column 64, the T-shaped column 64 bounces again after the clamping plate 59 passes through, when braking is stopped, the two iron lining plates 2 slide back, the straight surface of the clamping plate 59 contacts with the T-shaped column 64 and cannot press and pass through the T-shaped column 64 again, but drives the T-shaped column 64 and the sliding cylinder 62 to overcome the elasticity of the second spring 63 and slide to the inner wall of the other side of the sliding groove 61, the clamping plate 59 and the T-shaped column 64 abut against each other and cannot slide continuously, the two iron lining plates 2 stop sliding accordingly, the length of the sliding groove 61 is set to be twice the distance between the original brake pad 21 and the brake drum 11, therefore, the sum of the width of the T-shaped columns 64 and the distance between the first sliding groove 61 and the inner wall of the clamping box 6 compensates the distance between the wear thickness of the brake pad 21, along with the increase of the wear thickness of the brake pad 21, the more the sliding plates 52 and the adjusting box 5 slide relatively, the more the number of T-shaped columns 64 crossed by the clamping plates 59, the more the number of T-shaped columns 64 crossed by each sliding groove 61 is staggered in a stepped manner, the larger the distance between the clamping plates 59 and the original position, the position of the two iron lining plates 2 is adjusted in proportion according to the wear degree of the brake pad 21, so that the distance between the brake pad 21 and the brake drum 11 is always equal to the original distance by the distance between the actually arranged T-shaped columns 64 and the clamping plates 59, and the distance between the adjacent sliding grooves 61 is controlled, so that the error value of the brake distance and the original brake distance which are adjusted later is controlled is smaller, the original brake distance error of the adjacent sliding grooves 61 is set smaller, and the brake distance error is smaller the closer the brake distance which is preset to the brake distance is accurate under the condition that the normal implementation of the assembly is not affected.
Second embodiment
A limiting piece is embedded and installed at one end, close to the connecting column 53, of the bottom plate of the card box 6, a first metal foil 67 is embedded and installed at one side face of the T-shaped column 64 corresponding to the limiting piece, a second metal foil 68 matched with the first metal foil 67 is arranged on one side plate of the sliding cylinder 62 corresponding to the limiting piece in a penetrating mode, an alarm module 66 is fixedly arranged at the bottom of the card box 6, and the first metal foil 67 and the second metal foil 68 are electrically connected with the alarm module 66.
When the brake pad 21 is about to be worn to the greatest extent, the clamping plate 59 is just close to and presses the last T-shaped column 64, the T-shaped column 64 is provided with the first metal foil 67, when the T-shaped column 64 is pressed to slide downwards, the first metal foil 67 is contacted with the second metal foil 68 arranged on the corresponding slide cylinder 62, and the first metal foil 67, the second metal foil 68 and the alarm module 66 are electrically connected, so that when the first metal foil 67 is contacted with the second metal foil 68, the alarm module 66 is started, and an alarm is given to prompt a vehicle owner to replace the new brake pad 21.
Third embodiment
The safety assembly comprises a first coil spring 71 and a second coil spring 81, wherein the inner side surface of the iron lining plate 2 is rotatably provided with a rotary drum 7 through the first coil spring 71, dry powder for extinguishing fire is stored in the rotary drum 7, a plurality of fan blades 72 are fixedly connected to the outer part of the rotary drum 7, the inner part of each fan blade 72 is hollow and communicated with the inner part of the rotary drum 7, and a plurality of discharge grooves 721 which are convenient for throwing out the dry powder are arranged at the outer side end of the rotary drum 7;
A group of mounting plates 8 are fixedly mounted on the side wall of the iron lining plate 2, ratchets 82 meshed with the fan blades 72 are rotatably mounted between the two mounting plates 8 through a second coil spring 81, a heat conducting box 83 for storing heat conducting liquid is fixedly mounted between the two mounting plates 8, one side surface of the heat conducting box 83 is attached to the side wall of the iron lining plate 2, one side plate of the heat conducting box 83, which is close to the ratchets 82, is arranged in a concave arc shape, and the bottom end of the concave arc-shaped side plate of the heat conducting box 83 is abutted against the inner concave surface of the ratchets 82;
A piston column 84 is hermetically and slidably arranged in the bottom end of the concave arc-shaped side plate of the mounting plate 8, and the outer side end of the piston column 84 slidably extends to the outside of the heat conducting box 83 and is contacted with the inner concave surface of the ratchet 82;
the inside activity of fan 72 is provided with the cylindricality piece 73 that is laminated with the fan 72 inner wall, be connected with the fourth spring 74 between cylindricality piece 73 and the fan 72 outer end fixedly.
In operation, the dry powder is stored in the drum 7, in the initial state, the drum 7 needs to be manually held by the handle 75 to reversely and slowly rotate, the first coil spring 71 is continuously stretched, the drum 7 is stopped after being rotated for a plurality of circles, the set ratchet 82 can rotate upwards, the fan 72 can smoothly pass over the ratchet 82 when the drum 7 is reversely rotated, when the drum 7 is stopped to rotate and released, the first coil spring 71 can exert a forward rotating force on the drum 7, the ratchet 82 cannot rotate downwards due to the pressing of the concave arc plate of the heat conducting box 83, the fan 72 cannot rotate forwards together, the heat conducting liquid is stored in the heat conducting box 83 and is adhered to the side wall of the iron lining plate 2, when the brake pad 21 rubs against the brake drum 11 to cause fire, the temperature of the iron lining plate 2 suddenly rises, the heat conducting liquid in the heat conducting box 83 expands, so that the piston column 84 is pushed outwards, the outer end of the piston column 84 slides out and pushes the ratchet 82 upwards, when the ratchet 82 is pushed out to pass over the fan 72, the drum 7 and the fan 72 start to rotate rapidly under the restoring force of the first coil spring 71, thereby generating air flow, the air flow is combined with the self-contained hole of the brake chassis 1 to help to dissipate heat rapidly, the cylindrical block 73 attached to the inner wall of the fan 72 is arranged inside the fan 72, the cylindrical block 73 is pressed by the fourth spring 74, the dry powder and the discharge chute 721 are isolated, so that most of the dry powder does not flow out from the discharge chute 721 arranged at the tail end of the fan 72 in normal state, when the fan 72 rotates rapidly, the cylindrical block 73 slides to the tail end of the fan 72 under the action of centrifugal force, and the dry powder enters the inside the fan 72 under the action of the centrifugal force, at the moment, the blocking of the cylindrical block 73 is reduced, most of the dry powder can be thrown out of the discharge chute 721 and falls to the inner wall of the brake drum 11, and when the brake pad 21 rubs with the inner wall of the brake drum 11 to generate sparks, the fallen dry powder can timely extinguish the sparks, so that larger fire accidents can be prevented.
Working principle: when the output ends of the two ends of the brake cylinder 3 are controlled to push the two iron lining plates 2 to the outside through stepping on the foot brake, the brake pads 21 arranged on the outer sides of the iron lining plates 2 can contact and squeeze the brake drum 11, the brake drum 11 rotates simultaneously with the external tires, the external tires can stop rotating simultaneously when the brake drum 11 is rubbed by the brake pads 21, so that the purpose of braking is achieved, the distance between the brake pads 21 and the brake drum 11 is preset, when the foot brake is released, the output ends of the brake cylinder 3 retract, the two iron lining plates 2 can slide to the original positions under the action of the restoring force of the return springs 4, but the brake pads 21 are thinner and thinner along with the increase of the number of braking times, so that the braking distance between the brake pads 21 and the brake drum 11 is larger and larger, the braking safety is influenced, and the braking gap adjusting component of the device can adjust the braking distance in real time;
Since the distance between the clamping plate 59 and the nearest T-shaped column 64 is twice the original braking distance, when the two iron lining plates 2 slide to two sides for braking, the connecting rod 51 and the connecting column 53 which are respectively connected with the two iron lining plates 2 in a threaded way drive the adjusting box 5 and the sliding plate 52 to move oppositely, when the brake block 21 contacts the brake drum 11, the clamping plate 59 arranged at the bottom of the sliding plate 52 just contacts with the first T-shaped column 64, when stopping braking, the two iron lining plates 2 slide to the original position under the action of the restoring force of the return spring 4, the sliding plate 52 and the adjusting box 5 also slide to the original position relatively, but when the two brake blocks 21 wear, the two iron lining plates 2 need to slide outwards for a larger distance to achieve the purpose of successful braking when the two brake blocks 21 are worn down, so the sliding plate 52 and the adjusting box 5 slide to the same distance oppositely, because the thickness of the T-shaped column 64 is smaller, the top end of the T-shaped column 64 is circular arc, and the bottom end of the clamping plate 59 is wedge-shaped, the clamping plate 59 can overcome the elasticity of the third spring 65 to press and pass through the T-shaped column 64, the T-shaped column 64 can rebound after the clamping plate 59 passes through, when stopping braking, the two iron lining plates 2 slide back, the straight surface of the clamping plate 59 is contacted with the T-shaped column 64 and cannot be pressed again and pass through the T-shaped column 64, but can drive the T-shaped column 64 and the sliding cylinder 62 to overcome the elasticity of the second spring 63 and slide to the inner wall of the other side of the sliding groove 61, the clamping plate 59 and the T-shaped column 64 are mutually propped and cannot slide continuously, so that the two iron lining plates 2 stop sliding accordingly, and the length of the sliding groove 61 is set to be twice the distance between the original brake pad 21 and the brake drum 11, the sum of the width of the T-shaped columns 64 and the distance from the first sliding groove 61 to the inner wall of the clamping box 6 compensates the distance between the wear thickness of the brake pad 21, the more the sliding plate 52 and the adjusting box 5 slide relatively along with the increase of the wear thickness of the brake pad 21, the more the number of T-shaped columns 64 crossed by the clamping plate 59, the more the number of T-shaped columns 64 crossed by each sliding groove 61 is staggered in a stepped manner, the larger the distance between the clamping plate 59 and the original position is, the positions of the two iron lining plates 2 are adjusted in proportion according to the wear degree of the brake pad 21, so that the distance between the brake pad 21 and the brake drum 11 is always the same as the original distance, the thickness of the T-shaped columns 64 and the clamping plate 59 is actually set, and the distance between the adjacent sliding grooves 61 is controlled, so that the error value between the brake distance and the original brake distance is controlled, the thinner the thickness of the T-shaped columns 64 and the clamping plate 59 is set, the original brake distance error between the adjacent sliding grooves is set to be smaller, and the brake distance error between the adjacent sliding grooves is smaller the brake distance is the closer to the brake distance is the preset to be the accurate under the condition that the normal implementation of the assembly is not affected;
The device is also provided with an alarm module 66, when the brake pad 21 is about to be worn to the greatest extent, the clamping plate 59 just approaches and presses the last T-shaped column 64, the T-shaped column 64 is provided with a first metal foil 67, when the T-shaped column 64 is pressed to slide downwards, the first metal foil 67 is contacted with a second metal foil 68 arranged on the corresponding slide cylinder 62, and the first metal foil 67, the second metal foil 68 and the alarm module 66 are electrically connected, so that when the first metal foil 67 is contacted with the second metal foil 68, the alarm module 66 is started, and an alarm is given, so that a vehicle owner is reminded of replacing the new brake pad 21 in time;
When a new brake block 21 is replaced, a brake clearance adjusting assembly is required to be reset, a maintainer only needs to rotate a threaded column 91 anticlockwise by ninety degrees relative to a threaded cylinder 9, a rotating shaft 55 fixedly connected with the threaded column 91 rotates along with the threaded column, so that a sliding block 551 drives a cam 56 to rotate ninety degrees, the protruding end of the cam 56 is separated from a pressing plate 58, the pressing plate 58 can drive a clamping plate 59 to move upwards under the action of the restoring force of a first spring 57, the clamping plate 59 is not contacted and pressed with a T-shaped column 64 any more, therefore, two iron lining plates 2 can drive a sliding plate 52 and an adjusting box 5 to slide back to the original position under the action of the elastic force of a return spring 4, at the moment, the cam 56 is rotated back to the original position through the threaded column 91, and the protruding end of the cam 56 is pushed out of the pressing plate 58 and the clamping plate 59 downwards again, so that the reset work of the brake clearance adjusting assembly is completed, and the assembly is convenient to recycle;
The inside of the rotary drum 7 stores dry powder, in an initial state, the rotary drum 7 needs to be manually held to reversely and slowly rotate the rotary drum 7, so that the first coil spring 71 is continuously stretched, the rotary drum 7 stops after a plurality of circles, the set ratchets 82 can rotate upwards, so that when the rotary drum 7 reversely rotates, the fan 72 can smoothly pass the ratchets 82, when the rotary drum 7 stops rotating and is released, although the first coil spring 71 can apply a forward rotating force to the rotary drum 7, the ratchets 82 cannot rotate downwards due to the abutting pressure of the concave arc plate of the heat conducting box 83, so that the fan 72 cannot rotate forwards, and the heat conducting liquid is stored in the heat conducting box 83 and is attached to the side wall of the iron lining plate 2, so that when the brake plate 21 rubs with the brake drum 11, the temperature of the iron lining plate 2 suddenly rises, the heat conducting liquid in the heat conducting box 83 expands, so that the piston column 84 is pushed outwards, the outer side end of the piston column 84 slides out and pushes the ratchets 82 upwards, and when the ratchets 82 are pushed out to the fan 72, the fan 72 and the fan 72 quickly returns to the rotary disc 71 under the action of the first concave arc plate, so that the heat dissipation force of the air flow is quickly combined with the chassis 1, and the heat dissipation force is quickly recovered;
Through be provided with the cylindricality piece 73 that laminates with the inner wall of fan 72 in the inside of fan 72, cylindricality piece 73 receives the butt of fourth spring 74 and presses, isolated dry powder and blown down tank 721, therefore under the ordinary state, most dry powder can not follow the blown down tank 721 that the fan 72 terminal set up, and when fan 72 rotates fast, cylindricality piece 73 can slide to the terminal of fan 72 under the effect of centrifugal force, and dry powder also gets into the inside of fan 72 under the effect of centrifugal force, the jam of cylindricality piece 73 has been reduced at this moment, most dry powder can all be thrown out from the blown down tank 721, thereby fall to the inner wall department of brake drum 11, when brake block 21 and brake drum 11 inner wall friction produced the spark, the dry powder that drops can in time put out the spark, thereby prevent bigger fire accident.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a gap adjusting device is preset to brake clearance automatic adjustment arm, includes brake chassis (1), brake chassis (1)'s inside activity has cup jointed brake drum (11), two iron welts (2) are installed to the inside symmetry slidable of brake chassis (1), iron welts (2) are close to the lateral surface of brake drum (11) and are fixedly provided with brake block (21), brake chassis (1)'s inside is fixedly provided with brake cylinder (3), the both ends output of brake cylinder (3) contacts with the tip of two iron welts (2) respectively, two fixedly connected with return spring (4) between iron welts (2), its characterized in that still includes:
the brake intermittent adjusting assembly is used for adjusting the gap between the brake pad (21) and the brake drum (11) and is fixedly arranged between the two iron lining plates (2);
The pair of safety components are symmetrically and fixedly arranged on the inner side surfaces of the two iron lining plates (2) respectively;
The brake clearance adjusting assembly comprises an adjusting box (5) and a connecting rod (51), one end of the adjusting box (5) is arranged at the end part of an iron lining plate (2) through the connecting rod (51) in a threaded mode, a sliding plate (52) is movably sleeved in the adjusting box (5), a connecting column (53) is fixedly connected to one side face of the sliding plate (52), one end of the connecting column (53) movably penetrates through one side plate of the adjusting box (5) and is arranged at the end part of the other iron lining plate (2) in a threaded mode, a clamping box (6) is arranged on a bottom plate of the adjusting box (5) in a penetrating mode, a plurality of sliding grooves (61) are formed in the bottom plate of the clamping box (6) in a stepped mode, limiting pieces are slidably arranged in the sliding grooves (61), second springs (63) are fixedly connected between the limiting pieces and the sliding grooves (61), clamping pieces matched with the limiting pieces are fixedly arranged in the sliding plate (52), and the bottom ends of the clamping pieces movably extend to the inside of the clamping box (6);
The limiting piece comprises a sliding barrel (62), the sliding barrel (62) is slidably mounted in the sliding groove (61), a T-shaped column (64) is slidably sleeved in the sliding barrel (62), a third spring (65) is fixedly connected between the bottom end of the T-shaped column (64) and the sliding barrel (62), and the top end of the T-shaped column (64) slidably penetrates through the top plate of the sliding barrel (62) and is arranged to be an arc end;
The clamping piece comprises a mounting groove (54), the mounting groove (54) is formed in the sliding plate (52), a pressing plate (58) is slidably mounted in the mounting groove (54), a clamping plate (59) is fixedly connected to the bottom of the pressing plate (58), the bottom end of the clamping plate (59) penetrates through the inner wall of the bottom of the mounting groove (54) in a sliding mode and extends to the inside of the clamping box (6), the bottom end of the clamping plate (59) is wedge-shaped, a first spring (57) is fixedly connected between the top surface of the pressing plate (58) and the inner wall of the mounting groove (54), a cam (56) is rotatably mounted on the inner side wall of the mounting groove (54), the protruding end of the cam (56) abuts against the pressing plate (58), a rotating shaft (55) is movably sleeved in the inside of the cam (56), a sliding block (551) is fixedly arranged on the outer portion of the rotating shaft (55), one end, far away from the brake chassis (1), of the rotating shaft (55) penetrates through one side wall of the mounting groove (54) in a moving mode, is fixedly connected with the threaded cylinder (91), and a threaded cylinder (9) is fixedly connected with the threaded cylinder (9) and the threaded cylinder (9) is sleeved on the threaded cylinder;
The spacing of the clamping plate (59) from a T-shaped column (64) closest to the cam (56) is equal to the inner diameter length of the sliding groove (61) and is equal to twice the spacing of the brake drum (11) from the adjacent brake pad (21).
2. The automatic brake slack adjuster arm preset slack adjuster according to claim 1, wherein: the utility model discloses a card case (6) bottom plate is close to one end embedding of spliced pole (53) and installs the locating part, and this locating part is corresponding T shape post (64) one side embedding is installed first metal foil (67), and this locating part is corresponding a sideboard of slide (62) runs through and is provided with second metal foil (68) with first metal foil (67) looks adaptation, the bottom of card case (6) is fixed and is provided with alarm module (66), first metal foil (67) and second metal foil (68) all with alarm module (66) electric connection.
3. The automatic brake slack adjuster arm preset slack adjuster according to claim 2, wherein: the safety assembly comprises a first coil spring (71) and a second coil spring (81), wherein a rotary drum (7) is rotatably arranged on the inner side surface of the iron lining plate (2) through the first coil spring (71), dry powder for extinguishing fire is stored in the rotary drum (7), a plurality of fan blades (72) are fixedly connected to the outside of the rotary drum (7), the inside of the fan blades (72) is hollow and communicated with the inside of the rotary drum (7), and a plurality of discharge grooves (721) for facilitating the dry powder to be thrown out are formed in the outer side end of the rotary drum (7).
4. A brake slack automatic adjustment arm preset slack adjuster according to claim 3, wherein: a group of mounting plates (8) are fixedly mounted on the side wall of the iron lining plate (2), ratchets (82) meshed with the fan blades (72) are rotatably mounted between the two mounting plates (8) through second coil springs (81), a heat conducting box (83) for storing heat conducting liquid is fixedly mounted between the mounting plates (8), one side surface of the heat conducting box (83) is attached to the side wall of the iron lining plate (2), one side plate of the heat conducting box (83) close to the ratchets (82) is arranged into a concave arc shape, and the bottom end of the concave arc-shaped side plate of the heat conducting box (83) is pressed against the inner concave surface of the ratchets (82).
5. The automatic brake slack adjuster arm preset slack adjuster according to claim 4, wherein: the bottom end of the concave arc-shaped side plate of the mounting plate (8) is internally provided with a piston column (84) in a sealing sliding manner, and the outer side end of the piston column (84) extends to the outside of the heat conducting box (83) in a sliding manner and is contacted with the concave surface in the ratchet (82).
6. The automatic brake slack adjuster arm preset slack adjuster according to claim 5, wherein: the inside activity of fan piece (72) is provided with cylindricality piece (73) that are laminated with fan piece (72) inner wall, fixedly connected with fourth spring (74) between cylindricality piece (73) and fan piece (72) outer tip.
7. The automatic brake slack adjuster arm preset slack adjuster according to claim 5, wherein: the outer side part of the rotary drum (7) is fixedly connected with a handle (75) which is convenient to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311141465.4A CN116928250B (en) | 2023-09-06 | 2023-09-06 | Gap adjusting device is preset to brake gap automatic adjustment arm |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311141465.4A CN116928250B (en) | 2023-09-06 | 2023-09-06 | Gap adjusting device is preset to brake gap automatic adjustment arm |
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| CN116928250B true CN116928250B (en) | 2024-05-03 |
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| CN202311141465.4A Active CN116928250B (en) | 2023-09-06 | 2023-09-06 | Gap adjusting device is preset to brake gap automatic adjustment arm |
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|---|---|
| CN116928250A (en) | 2023-10-24 |
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