CN115045929A - High-service-life drum brake with uniform wear and no offset - Google Patents
High-service-life drum brake with uniform wear and no offset Download PDFInfo
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- CN115045929A CN115045929A CN202210710626.6A CN202210710626A CN115045929A CN 115045929 A CN115045929 A CN 115045929A CN 202210710626 A CN202210710626 A CN 202210710626A CN 115045929 A CN115045929 A CN 115045929A
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- 230000007246 mechanism Effects 0.000 claims abstract description 82
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 21
- 238000005299 abrasion Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 description 19
- 230000003044 adaptive effect Effects 0.000 description 11
- 210000000003 hoof Anatomy 0.000 description 9
- 238000001125 extrusion Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000013011 mating Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D51/10—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as exclusively radially-movable brake-shoes
- F16D51/12—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as exclusively radially-movable brake-shoes mechanically actuated
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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
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D2051/001—Parts or details of drum brakes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a long-life drum brake with uniform abrasion and no deviation, which relates to the technical field of butterfly valves and comprises a body, wherein a first shell and a brake disc are arranged in the body, the first shell is connected with the brake disc, the drum brake further comprises two connectors, the two connectors are symmetrically arranged in the first shell, the outer surface of each connector is provided with a plurality of expansion pieces, the outer side of the brake mechanism is provided with an adjusting mechanism, the adjusting mechanism is rotatably connected with a connecting frame, a limiting mechanism is arranged in the adjusting mechanism, a plurality of self-adaptive mechanisms are arranged on the inner side of the limitation, and a limiting mechanism is arranged in the self-adaptive mechanisms. This even not skew high life drum of wearing and tearing is stopped through self-adaptation regulation in the use, can effectively prevent that inhomogeneous phenomenon from appearing in wearing and tearing to make the interval between brake block and the brake disc the same all the time, thereby make the brake effect better.
Description
Technical Field
The invention relates to the technical field of butterfly valves, in particular to a long-service-life drum brake with uniform abrasion and no deviation.
Background
The vehicle is the most convenient and most applied transportation means of modern traffic, the brake is the most important safety piece on the vehicle, and the braking performance of the vehicle directly influences the driving safety of the vehicle. The drum brake is cheap and accords with traditional design, uses extensively.
Chinese utility model patent with publication number CN212717741U discloses a prismatic self-adaptation drum brake adjusting device, relate to arresting gear technical field, including the brake disc, the brake hoof of the circular arc block shape on the brake disc is located to two symmetries, and locate the friction disc on the brake hoof extrados, draw the company through the extension spring that resets between the hoof body of two brake hoofs, one of them group of corresponding end of two brake hoofs is equipped with the brake camshaft that is used for controlling the degree of opening and shutting between two brake hoofs, another group corresponds and is equipped with adjusting part between the end, adjusting part can adjust from top to bottom perpendicular to two brake hoofs, when adjusting part down, adjusting part struts two brake hoofs and expands to the two sides to both sides, when adjusting part upwards adjusts, two brake hoofs are middle condensation under the effect of extension spring that resets. The utility model discloses can adjust the clearance between brake drum and the friction disc through adjusting part portably, swiftly to make full use of friction disc improves resource utilization, guarantees the brake braking effect simultaneously.
The above-described devices still have problems in use;
the device adopts integral compensation, but is influenced by the structural property of drum braking, when the brake is carried out, the brake block can be unfolded around the brake wheel cylinder as the center of a circle, so that the positions of two sides of the brake block, which are relatively close to the middle position, in the brake block can firstly contact and rub with the brake disc, and finally the friction time of the firstly contacted position is longer than that of the rest friction points, thereby causing more serious abrasion, and when the abrasion is not uniform in the past, the brake block can be abraded for a long time, if the integral compensation is adopted, two conditions can occur after the compensation is finished, one condition is over-compensation, the over-compensation is caused by that when the compensation is carried out, the compensation quantity takes the position with large abrasion quantity as the basis for integral compensation, and when the brake is not carried out, the brake can be contacted with the brake disc at all times, thereby causing the brake state, the influence is gone, and the second kind of condition is that the offset is not enough, when compensating, the brake block uses the less position of wearing and tearing volume to carry out the whole compensation as the basis this moment, and when the compensation was accomplished the back, when carrying out the brake, the great place of wearing and tearing volume probably still can't contact with the brake disc to influence the brake effect.
Disclosure of Invention
The embodiment of the invention provides a long-service-life drum brake with uniform wear and no deviation, and aims to solve the technical problem in the prior art.
The embodiment of the invention adopts the following technical scheme: the utility model provides an even not skew high life drum of wearing and tearing is stopped, includes the body, be provided with first shell and brake disc in the body, first shell and brake disc interconnect still include two connectors, two connector symmetries set up in first shell, every the connector surface all is provided with a plurality of expanders, the output of expander is provided with a plurality of brake mechanisms of group, every group the brake mechanism both ends all are provided with the link, brake mechanism's the outside is provided with adjustment mechanism, adjustment mechanism rotates with the link to be connected, be provided with the limiting mechanism among the adjustment mechanism, the restriction inboard is provided with a plurality of self-adaptation mechanisms, be provided with stop gear among the self-adaptation mechanism.
Further, brake mechanism includes a plurality of groups brake block, is provided with a plurality of brake blocks in every group brake block, the brake block equidistance sets up the surface at the connector, every the both ends of brake block are provided with the recess, and the recess appearance at head and the tail both ends is the same, every the both ends of brake block are provided with the fixture block, and the fixture block is located the below of recess, the fixture block overcoat is equipped with the link.
Furthermore, a plurality of through grooves are formed in the connecting frame, each through groove corresponds to the corresponding fixture block one by one, and the height of each through groove is higher than that of each fixture block.
Furthermore, adjustment mechanism includes two connecting seats, two the connecting seat sets up the both sides at the brake block respectively, be provided with the expansion plate in the connecting seat, be provided with second regulating spring between expansion plate and the connecting seat, the lower extreme of expansion plate is provided with presses the briquetting, the lower bottom surface of expansion plate is provided with the connecting plate, open two restriction grooves in the connecting plate, the tip of expansion plate is provided with the connecting block, the both sides of connecting block are provided with the benchmark board, swing joint between benchmark board and the connecting plate.
Furthermore, the limiting mechanism comprises two limiting blocks, each limiting block is arranged below the corresponding limiting groove, an expansion spring is arranged on the outer surface of each limiting block, one end of each expansion spring is connected with the connecting seat, and a limiting rod is arranged on the inner side of each limiting block.
Further, the self-adaptation mechanism includes the self-adaptation seat, the self-adaptation seat sets up the surface at the connector, be provided with the connection mount pad in the self-adaptation seat, the connection mount pad is connected with the lower surface of brake block, and the below of every brake block all is provided with the connection mount pad, the lower surface of connection mount pad is provided with first regulating spring, the tip and the internal surface connection of self-adaptation seat of first regulating spring.
Further, stop gear includes first rotor plate, first rotor plate sets up the inboard at self-adaptation adjusting seat, and first rotor plate is located the both sides of connecting the mount pad, be connected with first cooperation board in the first rotor plate, the below of first cooperation board is provided with first restriction board, the outside of first restriction board is provided with the second rotor plate, the tip of second rotor plate is provided with the connecting axle, the connecting axle sets up the both sides of connecting the mount pad, be provided with the second cooperation board in the second rotor plate, the inboard of second cooperation board is provided with the second restriction board.
Furthermore, the cross sections of the limiting blocks and the limiting rods are L-shaped, and the contact surfaces of the limiting blocks and the limiting grooves are inclined surfaces.
Compared with the prior art, the invention has the beneficial effects that:
firstly, through the matching action of the brake mechanism and the adjusting mechanism, the brake effect of the brake mechanism is always in a high stable state, in the using process, when a certain brake pad in the brake mechanism is integrally worn, after the brake is finished, the telescopic plate is bounced under the action of the first adjusting spring, when the telescopic plate extends to the final state, a gap is generated between the worn brake pad and the reference plate, the worn brake pad is jacked up integrally under the action of the connector, so that the reference plate is attached, the heights of the unworn brake pad and the worn brake pad are always the same, the distance between the brake pad and the brake disc is always kept the same, the required brake distance is always the same when the drum brake is used for braking, and the stability of the drum brake is improved;
secondly, the brake component can be partially lifted under the action of the self-adaptive mechanism and the connecting frame in the using process, so that the adjusted brake pad can always be attached to a brake disc, in the using process, in order to avoid the phenomenon of uneven abrasion, in the process of self-adaptive adjustment of the brake pad, the connecting frame is arranged outside the clamping block at the end part of the brake pad and is connected with the connecting frame in a rotating way, the gap arranged in the connecting frame is larger than the clamping block, the brake pad can be adjusted in an ascending way while the brake pad is kept to be adjusted in an angle, in the process of abrasion compensation, the adjustment of different local abrasion degrees can be carried out according to different abrasion points, the situation that the adjusted brake pad is over-compensated or lacks compensation amount due to integral adjustment is avoided, and the brake disc can be attached to the compensated brake pad when braking is ensured, therefore, the brake effect is ensured, and the influence of the brake block contacting the brake disc on driving when the brake is not applied is avoided;
thirdly, in the in-process that uses because the benchmark board passes through the expansion plate to be connected with the brake block, when braking, the benchmark board receives the interference force of brake disc this moment, thereby can contract in the recess that sets up in the brake block, make the existence of benchmark board can not influence the brake effect between brake block and the brake disc, and the scalable messenger of basic board is when carrying out the wearing and tearing regulation, can adjust in real time according to the wearing and tearing state of brake block all the time, when wearing and tearing are serious just appearing in one of them brake block, can all make it adjust the same degree of wear under the effect of benchmark board, thereby be applicable to and carry out the benchmark regulation to the brake block.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of the main structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the main body of the present invention;
FIG. 3 is a schematic structural diagram of the braking mechanism of the present invention;
FIG. 4 is a schematic view of a connection structure of the adjusting mechanism and the brake structure of the present invention;
FIG. 5 is a schematic structural view of a brake pad according to the present invention;
FIG. 6 is a first perspective view of the adjustment mechanism of the present invention;
FIG. 7 is a second perspective view of the adjustment mechanism of the present invention;
FIG. 8 is an enlarged view of the structure at A in FIG. 7 according to the present invention;
FIG. 9 is a schematic cross-sectional view of the adaptive mechanism of the present invention;
fig. 10 is an enlarged schematic view of a portion a of fig. 9 according to the present invention.
Reference numerals:
1. a body; 11. a first housing; 12. a brake disc; 2. the connector 3, the adjusting mechanism 31, the connecting block 32, the reference plate 33, the expansion plate 34, the pressing block 35, the connecting seat 36 and the connecting plate; 4. a retractor; 5. a limiting mechanism; 51. a limiting block; 52. a tension spring; 53. a restraining bar; 6. a limiting mechanism; 61. a first rotating plate; 62. a first mating plate; 63. a first limiting plate; 64. a second rotating plate; 65. a second mating plate; 66. a second limiting plate; 67. a connecting shaft; 7. a connecting frame; 8. a brake mechanism; 81. a brake pad; 82. a groove; 83. a clamping block; 9. an adaptive mechanism; 91. a self-adaptive adjusting seat; 92. connecting the mounting seat; 93. a first regulating spring.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 10, an embodiment of the present invention provides a long-life drum brake with uniform wear and no offset, which includes a body 1, the body 1 is provided with a first shell 11 and a brake disc 12, the first shell 11 and the brake disc 12 are connected with each other, the body further comprises two connectors 2, the two connectors 2 are symmetrically arranged in a first shell 11, a plurality of retractors 4 are arranged on the outer surface of each connector 2, the output end of the telescopic device 4 is provided with a plurality of groups of brake mechanisms 8, both ends of each group of brake mechanisms 8 are provided with connecting frames 7, the outer side of the brake mechanism 8 is provided with an adjusting mechanism 3, the adjusting mechanism 3 is rotationally connected with a connecting frame 7, the adjusting mechanism 3 is provided with a limiting mechanism 5, the limiting inner side is provided with a plurality of self-adaptive mechanisms 9, and the self-adaptive mechanisms 9 are provided with limiting mechanisms 6.
The during operation, when drum is stopped and is braked, receive the influence of the brake principle that the drum was stopped, brake block 81 that the drum was stopped does not contact the brake disc simultaneously, along with continuous use, it is great to take precedence contact point wearing and tearing volume, when the drum was stopped and is not braked this moment, adjustment mechanism 3 stretches out, brake mechanism 8 is under the effect of expansion bend 4 and self-adaptation mechanism 9 this moment, it additionally stretches out to have the part, make brake mechanism 8 be in same water flat line, thereby reach the effect of self-adaptation regulation, the in-process of braking is stopped and is carried out at the drum simultaneously, adjustment mechanism 3 drives 6 works of stop gear, stop gear 6 restricts the motion of self-adaptation mechanism 9, thereby reach the in-process brake mechanism 8 that carries out the brake and can not move down, thereby guarantee the interval between brake mechanism 8 and the brake disc, thereby guarantee the braking effect.
Specifically, brake mechanism 8 includes a plurality of groups brake block, is provided with a plurality of brake blocks 81 in every group brake block, brake block 81 equidistance sets up the surface at connector 2, every brake block 81's both ends are provided with recess 82, and the recess 82 appearance at head and the tail both ends is the same, every brake block 81's both ends are provided with fixture block 83, and fixture block 83 is located recess 82's below, the fixture block 83 overcoat is equipped with link 7.
The during operation, because 8 a plurality of brake group pieces of brake mechanism, be equipped with a plurality of brake block 81 in every brake group piece, at the in-process that brakes, brake block 81 between a set of brake group piece moves through link 7 simultaneously, thereby make the in-process of carrying out angle modulation, angle modulation is the same between the brake group piece, thereby guarantee that the brake block 81 after adjusting is in an on-line at will, and every brake block 81 all is provided with corresponding expansion bend 4, make when wearing and tearing appear wholly in certain brake block 81, whole self-adaptation regulation can carry out, thereby guarantee that the interval between brake block 81 and the brake disc is the same, guarantee the braking effect, make the wearing and tearing of brake block 81 can be even.
Specifically, a plurality of through grooves are formed in the connecting frame 7, each through groove corresponds to one of the clamping blocks 83, and the height of each through groove is higher than the height of each clamping block 83.
When the brake is operated, one of the brake pads 81 can move up and down.
Specifically, adjustment mechanism 3 includes two connecting seats 35, two connecting seats 35 set up the both sides at the brake block respectively, be provided with expansion plate 33 in the connecting seat 35, be provided with second regulating spring between expansion plate 33 and the connecting seat 35, the lower extreme of expansion plate 33 is provided with pressing block 34, the lower bottom surface of expansion plate 33 is provided with connecting plate 36, open two restriction grooves that are equipped with in connecting plate 36, the tip of expansion plate 33 is provided with connecting block 31, the both sides of connecting block 31 are provided with reference plate 32, swing joint between reference plate 32 and the connecting plate 36.
When the brake device works, the brake effect of the brake mechanism 8 is always in a high stable state through the matching effect of the brake mechanism 8 and the adjusting mechanism 3, in the using process, when one brake pad 81 in the brake mechanism 8 is integrally worn, after the braking is finished, the expansion plate 33 is bounced under the action of the first adjusting spring 93, when the expansion plate 33 extends to a final state, the reference plate 32 is unfolded, after the reference plate 32 is unfolded, a reference can be made for the adjustment of the brake pad 81, meanwhile, a gap is formed between the worn brake pad 81 and the reference plate 32, at the moment, the worn brake pad 81 is integrally jacked up under the action of the connector 2, so that the reference plate 32 is attached, the heights of the brake pads 81 are the same, and the device not only can perform self-adaptive adjustment on the worn brake pad 81 in the using process, and under the action of the reference plate 32, the distance between the brake pad 81 and the brake disc can be always kept the same, so that the required braking distance is always the same when the drum brake is used for braking, and the stability of the drum brake is improved.
Specifically, the limiting mechanism 5 includes two limiting blocks 51, each limiting block 51 is disposed below the corresponding limiting groove, an extension spring 52 is disposed on an outer surface of each limiting block 51, one end of each extension spring 52 is connected to the connecting seat 35, and a limiting rod 53 is disposed on an inner side of each limiting block 51.
Specifically, the adaptive mechanism 9 includes an adaptive adjustment seat 91, the adaptive adjustment seat 91 is disposed on the outer surface of the connector 2, a connection mounting seat 92 is disposed in the adaptive adjustment seat 91, the connection mounting seat 92 is connected to the lower surface of the brake pad 81, a connection mounting seat 92 is disposed below each brake pad 81, a first adjustment spring 93 is disposed on the lower surface of the connection mounting seat 92, and the end of the first adjustment spring 93 is connected to the inner surface of the adaptive adjustment seat 91.
Specifically, the stopper mechanism 6 includes a first rotating plate 61, the first rotating plate 61 is disposed inside the adaptive adjustment seat 91, the first rotating plate 61 is located on both sides of the connection mounting seat 92, a first engagement plate 62 is connected to the first rotating plate 61, a first limiting plate 63 is disposed below the first engagement plate 62, a second rotating plate 64 is disposed outside the first limiting plate 63, a connection shaft 67 is disposed at an end of the second rotating plate 64, the connection shaft 67 is disposed on both sides of the connection mounting seat 92, a second engagement plate 65 is disposed in the second rotating plate 64, and a second limiting plate 66 is disposed inside the second engagement plate 65.
Specifically, the cross sections of the limiting block 51 and the limiting rod 53 are L-shaped, and the contact surface of the limiting block 51 and the limiting groove is an inclined surface.
During braking, the brake pad 81 can only move outwards but can not move inwards through the matching action of the limiting mechanism 5, the adaptive mechanism 9 and the limiting mechanism 6, when the braking state is relieved, the limiting block 51 is not extruded by the connecting plate 36 at the moment, the limiting block 51 is reset under the action of the telescopic spring 52 at the moment, after the limiting block 51 is reset, the connecting mounting seat 92 extends outwards under the action of the first adjusting spring 93, the brake pad 81 is moved to touch the reference plate 32 due to the connection of the connecting mounting seat 92 and the brake pad 81, so that the adaptive adjustment of the brake pad 81 is completed, after the adjustment is completed, during braking, the brake disc can contact the reference plate 32 firstly, because the reference plate 32 is connected with the telescopic plate 33, and the telescopic plate 33 is connected with the connecting seat 35, at the moment, the telescopic plate 33 is compressed inwards, because be provided with recess 82 in the brake block 81, the telescopic plate 33 can be withdrawed in recess 82 this moment, thereby make the brake can contact with the brake disc, at the in-process of brake block 81 and brake disc contact, because be provided with first cooperation board 62 on the first rotation board 61, first cooperation board 62 below is provided with first limiting plate 63, when brake block 81 receives the extrusion inward movement, first cooperation board 62 can contradict first limiting plate 63 this moment, make brake block 81 unable removal, thereby reach brake block 81 and can only outwards remove, the effect of unable inward movement, guarantee brake block 81's braking effect.
Working principle; in the process of braking, when the whole brake pad 81 in the brake mechanism 8 is worn, after braking is completed, the extension plate 33 is bounced under the action of the first adjusting spring 93, when the extension plate 33 extends to the final state, the reference plate 32 is unfolded, when the reference plate 32 is unfolded, a reference can be made for adjusting the brake pad 81, a gap is formed between the worn brake pad 81 and the reference plate 32, and the worn brake pad 81 is jacked up by the whole connector 2, so that the gap between the brake pad 81 and the reference plate 32 is made up, the heights of the brake pads 81 are the same, the device can not only perform self-adaptive adjustment on the worn brake pad 81 in the using process, but also can keep the same distance between the brake pad 81 and a brake disc under the action of the reference plate 32, when the drum brake is used for braking, the required braking distance is always the same, the drum brake stability is improved, in the process of adaptively adjusting the brake pad 81, as the connecting frame 7 is rotatably connected with the connecting seat 35 and the connecting seat 35 is movably connected with the brake pad 81, the brake pad 81 can not only move up and down, but also can be subjected to angle adjustment under the influence of the connecting seat 35, so that the adjusting effect of the brake pad 81 is improved, when the braking state is relieved, the limiting block 51 is not extruded by the connecting plate 36, the limiting block 51 is reset under the action of the telescopic spring 52, after the limiting block 51 is reset, the connecting mounting seat 92 extends outwards under the action of the first adjusting spring 93, and as the connecting mounting seat 92 is connected with the brake pad 81, the brake pad 81 is moved until touching the reference plate 32, so that the adaptive adjustment of the brake pad 81 is completed, after the adjustment is completed, in the braking process, the brake disc contacts the reference plate 32 first, because the reference plate 32 is connected with the telescopic plate 33, and the telescopic plate 33 is connected with the connecting seat 35, at this time, the telescopic plate 33 contracts inwards under the extrusion force, because the groove 82 is arranged in the brake pad 81, the telescopic plate 33 can be retracted into the groove 82, so that the brake can contact with the brake disc, in the contact process of the brake pad 81 and the brake disc, because the first matching plate 62 is arranged on the first rotating plate 61, the first limiting plate 63 is arranged below the first matching plate 62, when the brake pad 81 moves inwards under the extrusion force, the first matching plate 62 can contact the first limiting plate 63, so that the brake pad 81 cannot move, thereby achieving the effect that the brake pad 81 can only move outwards and cannot move inwards, so as to ensure the braking effect of the brake pad 81, because the brake pad after the self-adaptive adjustment can always fit the inner surface of the brake disc, therefore, the abrasion of the brake disc can achieve a relatively uniform effect, and the brake pad can be abraded to a safe thickness in the abrasion process, so that the abrasion loss of the brake pad is increased, the brake effect is not influenced, and the service life of the brake pad is longer.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A drum brake with uniform wear and no deviation and long service life comprises a body (1), wherein a first shell (11) and a brake disc (12) are arranged in the body (1), and the first shell (11) is connected with the brake disc (12) mutually, and is characterized in that; still include two connectors (2), two connector (2) symmetries set up in first shell (11), every connector (2) surface all is provided with a plurality of retractors (4), the output of retractors (4) is provided with a plurality of brake mechanism (8), every group brake mechanism (8) both ends all are provided with link (7), the outside of brake mechanism (8) is provided with adjustment mechanism (3), adjustment mechanism (3) rotate with link (7) and are connected, be provided with limiting mechanism (5) in adjustment mechanism (3), the restriction inboard is provided with a plurality of self-adaptation mechanism (9), be provided with stop gear (6) in self-adaptation mechanism (9).
2. A high life drum brake with uniform wear and no deflection as claimed in claim 1 wherein; brake mechanism (8) include a plurality of groups brake block, are provided with a plurality of brake blocks (81) in every group brake block, brake block (81) equidistance sets up the surface in connector (2), every the both ends of brake block (81) are provided with recess (82), and recess (82) appearance at head and the tail both ends is the same, every the both ends of brake block (81) are provided with fixture block (83), and fixture block (83) are located the below of recess (82), fixture block (83) overcoat is equipped with link (7).
3. A high life drum brake with uniform wear and no deflection as claimed in claim 1 wherein; a plurality of through grooves are formed in the connecting frame (7), each through groove corresponds to the corresponding clamping block (83) one by one, and the height of each through groove is higher than that of each clamping block (83).
4. A high life drum brake with uniform wear and no deflection as claimed in claim 1 wherein; adjustment mechanism (3) include two connecting seats (35), two connecting seat (35) set up the both sides at the brake block respectively, be provided with expansion plate (33) in connecting seat (35), be provided with second regulating spring between expansion plate (33) and connecting seat (35), the lower extreme of expansion plate (33) is provided with presses piece (34), the lower bottom surface of expansion plate (33) is provided with connecting plate (36), it has two restriction grooves to open in connecting plate (36), the tip of expansion plate (33) is provided with connecting block (31), the both sides of connecting block (31) are provided with benchmark board (32), swing joint between benchmark board (32) and connecting plate (36).
5. The drum brake with uniform wear and no deviation and high service life is characterized in that the limiting mechanism (5) comprises two limiting blocks (51), each limiting block (51) is arranged below the corresponding limiting groove, the outer surface of each limiting block (51) is provided with a telescopic spring (52), one end of each telescopic spring (52) is connected with the connecting seat (35), and the inner side of each limiting block (51) is provided with a limiting rod (53).
6. A high life drum brake with uniform wear and no deflection as claimed in claim 1 wherein; self-adaptation mechanism (9) are including self-adaptation adjustment seat (91), self-adaptation adjustment seat (91) set up the surface at connector (2), be provided with in self-adaptation adjustment seat (91) and connect mount pad (92), connect the lower surface of mount pad (92) and brake block (81) and be connected, the below of every brake block (81) all is provided with connects mount pad (92), the lower surface of connecting mount pad (92) is provided with first regulating spring (93), the tip and the internal surface of self-adaptation adjustment seat (91) of first regulating spring (93) are connected.
7. A high life drum brake with uniform wear and no deflection as claimed in claim 1 wherein; the limiting mechanism (6) comprises a first rotating plate (61), the first rotating plate (61) is arranged on the inner side of the self-adaptive adjusting seat (91), the first rotating plate (61) is located on two sides of the connecting installation seat (92), a first matching plate (62) is connected into the first rotating plate (61), a first limiting plate (63) is arranged below the first matching plate (62), a second rotating plate (64) is arranged on the outer side of the first limiting plate (63), a connecting shaft (67) is arranged at the end portion of the second rotating plate (64), the connecting shaft (67) is arranged on two sides of the connecting installation seat (92), a second matching plate (65) is arranged in the second rotating plate (64), and a second limiting plate (66) is arranged on the inner side of the second matching plate (65).
8. A high life drum brake with uniform wear and no deflection as claimed in claim 4, wherein; the cross sections of the limiting block (51) and the limiting rod (53) are L-shaped, and the contact surface of the limiting block (51) and the limiting groove is an inclined surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210710626.6A CN115045929B (en) | 2022-06-22 | 2022-06-22 | Wear-even and non-offset long-service-life drum brake |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210710626.6A CN115045929B (en) | 2022-06-22 | 2022-06-22 | Wear-even and non-offset long-service-life drum brake |
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| CN115045929A true CN115045929A (en) | 2022-09-13 |
| CN115045929B CN115045929B (en) | 2023-11-24 |
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| CN202210710626.6A Active CN115045929B (en) | 2022-06-22 | 2022-06-22 | Wear-even and non-offset long-service-life drum brake |
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