CN114876987B - Drum brake block - Google Patents

Drum brake block Download PDF

Info

Publication number
CN114876987B
CN114876987B CN202210674573.7A CN202210674573A CN114876987B CN 114876987 B CN114876987 B CN 114876987B CN 202210674573 A CN202210674573 A CN 202210674573A CN 114876987 B CN114876987 B CN 114876987B
Authority
CN
China
Prior art keywords
driving
wear detector
brake pad
sliding rail
sliding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202210674573.7A
Other languages
Chinese (zh)
Other versions
CN114876987A (en
Inventor
赵怡然
张琨
靳李宁
邱创�
沈远杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zaoyang Hualian Friction Material Co ltd
Original Assignee
Zaoyang Hualian Friction Material Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zaoyang Hualian Friction Material Co ltd filed Critical Zaoyang Hualian Friction Material Co ltd
Priority to CN202210674573.7A priority Critical patent/CN114876987B/en
Publication of CN114876987A publication Critical patent/CN114876987A/en
Application granted granted Critical
Publication of CN114876987B publication Critical patent/CN114876987B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F16D66/023—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness directly sensing the position of braking members
    • F16D66/024—Sensors mounted on braking members adapted to contact the brake disc or drum, e.g. wire loops severed on contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention discloses a drum brake pad, which belongs to the technical field of brake pads and comprises the following components: a brake pad body and a driving mechanism. An arc friction surface is formed on one side of the brake pad main body, a mounting groove is formed in the middle of the friction surface along the length direction of the brake pad main body, a sliding rail is embedded in the mounting groove, a wear detector is connected in the sliding rail in a sliding manner, the detection end of the wear detector is arranged in the mounting groove and is arranged at intervals towards the opening end of the mounting groove to detect the wear degree of the friction surface, and the wear detector is electrically connected with an automobile inner controller and an alarm; the driving mechanism comprises a driving part and a transmission part, the driving part is in transmission connection with the wear detector through the transmission part, and the transmission part is used for converting the driving force of the driving part into reciprocating motion of the wear detector along the extending direction of the sliding rail; the invention can realize the detection of the brake pad along the movement of the length direction of the brake pad, realize the omnibearing abrasion detection of the brake pad and improve the detection precision and comprehensiveness.

Description

Drum brake block
Technical Field
The invention relates to the technical field of brake pads, in particular to a drum brake pad.
Background
Drum brakes have an iron casting shaped like a tambour, known as a brake drum, which is fixed to the tire and rotates at the same speed. The disc brake has the advantages of better reactivity and stability, better heat dissipation, simple replacement and the like. Drum brakes are relatively low in cost and relatively high in absolute braking force, and are widely applied to rear wheels of small cars. But the abrasion rate is higher, so the overall cost is higher.
Generally, when the friction plate is worn to the limit position, the friction plate is replaced after being observed and judged by a driver, but when the friction plate is worn to the limit position, the braking performance of a brake is greatly affected, and if the brake plate cannot be replaced in time, safety accidents are very easy to occur; the existing detection mode is to additionally install a wear detector or a friction surface on the brake pad to detect the wear condition of the brake pad, but the wear condition of different positions of each brake pad can be different according to the use of different types or states of the brake pad, and the sensor can not embody the specific wear condition of the brake pad only through the detection of a fixed position.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a drum brake pad, which solves the technical problems of the prior art that the detection precision and the detection effect of the brake pad are not ideal.
In order to achieve the technical purpose, the technical scheme of the invention provides a drum brake pad, which comprises the following components:
the brake pad comprises a brake pad body, wherein an arc-shaped friction surface is formed on one side of the brake pad body, a mounting groove is formed in the middle of the friction surface along the length direction of the brake pad body, a sliding rail is embedded in the mounting groove, a wear detector is connected in the sliding rail in a sliding manner, the detection end of the wear detector is arranged in the mounting groove and is arranged at intervals towards the opening end of the mounting groove to detect the wear degree of the friction surface, and the wear detector is electrically connected with an automobile inner controller and an alarm;
the driving mechanism comprises a driving part and a transmission part, the driving part is in transmission connection with the wear detector through the transmission part, and the transmission part is used for converting the driving force of the driving part into reciprocating motion of the wear detector along the extending direction of the sliding rail; when any position of the friction surface is worn to be at the same height as the wear detector, the detection end can be contacted with the brake drum to trigger the alarm by the controller.
In some embodiments, the driving part comprises a first driving part and a second driving part, the transmission part comprises a first winding wire and a second winding wire, the two ends of the sliding rail are respectively provided with mounting boxes, the first driving part is arranged on one of the mounting boxes, the driving end of the first driving part is connected with the wear detector through the first winding wire and is used for generating driving force for driving the wear detector to slide towards one side close to the first driving part, the second driving part is arranged on the other mounting box, and the driving end of the second driving part is connected with the wear detector through the second winding wire and is used for generating driving force for driving the wear detector to slide towards one side close to the second driving part.
In some embodiments, the first driving member includes a first winding roller and a winding motor, the second driving member includes a second winding roller and a spiral spring, the first winding roller is rotationally arranged on one of the mounting boxes, one end of the first winding wire is connected with the wear detector, the other end of the first winding wire is connected with the first winding roller, the driving end of the winding motor is connected with the first winding roller and is used for driving the first winding roller to rotate so as to wind the first winding roller, the second winding roller is rotationally arranged on the other mounting box, one end of the second winding wire is connected with the wear detector, and the other end of the second winding wire is connected with the second winding roller through the spiral spring.
In some embodiments, the driving portion includes a driving motor, the transmission portion includes a gear and an arc-shaped rack, the arc-shaped rack is disposed in the mounting groove and coaxially disposed with the slide rail, the gear is rotationally disposed in the wear detector, and the gear is rotationally engaged with the arc-shaped rack, and the driving motor is connected with the gear and is used for driving the gear to rotate.
In some embodiments, the drum brake pad further comprises an adjusting mechanism connected to the brake pad body, wherein one end of the adjusting mechanism, which is close to the sliding rail, forms a driving end connected to the sliding rail and used for driving the sliding rail to translate up and down along the height direction of the mounting groove.
In some embodiments, the slide rail comprises at least two slide plates, and an elastic block is connected between two adjacent slide plates.
In some embodiments, two sides of two ends of each sliding plate are provided with limiting blocks, and a limiting groove parallel to the height direction of the mounting groove is formed in the position of the groove wall of the mounting groove corresponding to the limiting blocks, and the limiting blocks are arranged in the limiting groove and are in sliding connection with the limiting groove.
In some embodiments, the slide rail may also be an integral arcuate plate-like structure.
In some embodiments, a sliding groove is formed in one end, close to the friction surface, of the sliding rail along the length direction of the sliding rail, the sliding groove is of a convex structural design, and the lower side of the wear detector is in sliding connection with the sliding groove.
In some embodiments, the two sides of the wear detector are both provided with push blocks, the push blocks are in sliding connection with the sliding rail, and the cross-sectional area of the push blocks is gradually increased from one side away from the sliding rail to the other side attached to the sliding rail.
Compared with the prior art, the invention has the beneficial effects that: through the brake block main body, the friction surface arranged on the brake block main body, the sliding rail and the abrasion detector arranged on the sliding rail, when the friction surface is abraded to a set position, the abrasion detector is flush with the abrasion surface, the brake drum is contacted with the detection end of the abrasion detector, a detection signal is sent to the controller, an alarm is triggered, and the controller is reminded of replacing the brake block; the driving mechanism that the cooperation set up makes under the drive of drive division and drive division, can realize driving the reciprocating motion of wearing and tearing detector along slide rail extending direction, can realize detecting it along brake block length direction activity, realizes the omnidirectional wearing and tearing of brake block and detects, has improved the precision and the comprehensiveness of detection.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of a drum brake pad according to the present invention;
FIG. 2 is a schematic overall cross-sectional elevation view of an embodiment of a drum brake pad of the present invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2 at A;
FIG. 4 is an enlarged schematic view of the structure of FIG. 2 at B;
FIG. 5 is a schematic view of a rail mounting structure of an embodiment of a drum brake pad according to the present invention;
FIG. 6 is a schematic view of a rail mounting perspective of an embodiment of a drum brake pad according to the present invention;
FIG. 7 is a schematic cross-sectional view of a driving mechanism installation of an embodiment of a drum brake pad of the present invention;
FIG. 8 is a schematic side view of a cross-sectional configuration of a rail according to one embodiment of a drum brake pad of the present invention;
fig. 9 is a schematic cross-sectional front view of a wear detector according to an embodiment of the drum brake pad of the present invention.
In the figure: 1. a brake pad body; 11. a friction surface; 12. a mounting groove; 13. a slide rail; 131. a slide plate; 132. an elastic block; 133. a limit groove; 134. a chute; 14. a wear detector; 141. a controller; 142. an alarm; 143. a pushing block; 15. mounting a shell; 16. an inductive contact switch; 2. a driving mechanism; 21. a first driving member; 211. a first winding wire; 212. a first wind-up roll; 213. a winding motor; 22. a second driving member; 221. a second winding wire; 222. a second wind-up roll; 223. a spiral spring; 23. a mounting box; 24. a driving motor; 25. a gear; 26. an arc-shaped rack; 3. an adjusting mechanism; 31. and (3) a screw.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 and 2, the present invention provides a drum brake pad, comprising: a brake pad body 1 and a driving mechanism 2.
An arc-shaped friction surface 11 is formed on one side of the brake pad main body 1, a mounting groove 12 is formed in the middle of the friction surface 11 along the length direction of the brake pad main body 1, a sliding rail 13 is embedded in the mounting groove 12, a wear detector 14 is connected in a sliding manner in the sliding rail 13, the detection end of the wear detector 14 is arranged in the mounting groove 12 and is arranged towards the opening end of the mounting groove 12 at intervals to detect the wear degree of the friction surface 11, and the wear detector 14 is electrically connected with an automobile inner controller 141 and an alarm 142;
the driving mechanism 2 comprises a driving part and a transmission part, the driving part is in transmission connection with the wear detector 14 through the transmission part, and the transmission part is used for converting the driving force of the driving part into reciprocating motion of the wear detector 14 along the extending direction of the sliding rail 13; when any position of the friction surface 11 is worn to be at the same height as the wear detector 14, the detection end can be contacted with the brake drum to trigger the alarm 142 to alarm by the controller 141.
In the device, after the brake pad main body 1 is installed, the brake pad main body is in contact with a brake drum through an arc friction surface 11 to perform braking work, a wear detector 14 is in sliding connection with a sliding rail 13, the detection end of the wear detector 14 is arranged in an installation groove 12 and is arranged towards the opening end of the installation groove 12 at intervals, when the device is used, the wear detector 14 is electrically connected with a control system of an automobile and an alarm 142, when the friction surface 11 is worn to a set position, the wear detector 14 is level with the wear surface, the brake drum is in contact with the detection end of the wear detector 14, a detection signal is sent to a controller 141, the alarm 142 is triggered to give an alarm, and a driver is reminded of replacing the brake pad; the driving part is in transmission connection with the wear detector 14 through the transmission part, and the transmission part can convert the driving force of the driving part into the reciprocating motion of the wear detector 14 along the extending direction of the sliding rail 13, so that the reciprocating motion of the wear detector 14 along the extending direction of the sliding rail 13 can be driven by the driving part and the transmission part, and the detection of any position of the friction surface 11 can be realized.
As shown in fig. 9, specifically, in this embodiment, the wear detector 14 includes a mounting housing 15 and an inductive contact switch 16, where the mounting housing 15 and the inductive contact switch 16 are both disposed in the mounting slot 12, the inductive contact switch 16 is disposed towards an opening end of the mounting slot 12 at intervals, a groove is disposed on one side of the mounting housing 15 near the inductive contact switch 16, the inductive contact switch 16 is connected with a bottom of the groove by a spring and slidingly connected with the groove, and when the inductive contact switch 16 contacts the brake drum, the inductive contact switch 16 can be pressed back to the groove to realize protection of the inductive contact switch 16;
inductive proximity switches consist of three major parts: an oscillator, a switching circuit and an amplifying output circuit. The oscillator generates an alternating magnetic field. When the metal object approaches this magnetic field and reaches an induced distance, eddy currents are generated within the metal object, resulting in damping of the oscillations, and thus stopping the oscillations. The oscillation and stop change of the oscillator is processed by the post-stage amplifying circuit and converted into a switch signal to trigger the controller 141 in the automobile, thereby achieving the purpose of non-contact detection.
As shown in fig. 2, in some embodiments, the driving part includes a first driving member 21 and a second driving member 22, the driving part includes a first winding wire 211 and a second winding wire 221, two ends of the sliding rail 13 are respectively provided with a mounting box 23, the first driving member 21 is disposed in one of the mounting boxes 23, the driving end of the first driving member 21 is connected with the wear detector 14 through the first winding wire 211 and is used for generating a driving force for driving the wear detector 14 to slide towards one side close to the first driving member 21, the second driving member 22 is disposed in the other mounting box 23, the driving end of the second driving member 22 is connected with the wear detector 14 through the second winding wire 221 and is used for generating a driving force for driving the wear detector 14 to slide towards one side close to the second driving member 22, and the second driving member 22 is connected with the wear detector 14 through the first winding wire 211 and is used for generating a driving force for driving the wear detector 14 to slide towards one side close to the first driving member 21, and the second driving member 22 is connected with the second winding wire 221 through the first winding wire 21 and is used for generating a driving force for driving the wear detector 14 to slide towards one side close to the wear detector 14, and the sliding direction of the sliding detector 14 can be adjusted along the sliding direction of the sliding rail 13, and the sliding direction of the sliding detector 14 can be adjusted along the sliding direction of the sliding direction is realized, and the sliding direction of the sliding detector 14 can be adjusted along the sliding direction of the sliding rail 11 is realized;
the drum brake block is characterized in that the drum brake block is further provided with an adjusting mechanism 3, the adjusting mechanism 3 is connected with the brake block main body 1, one end, close to the sliding rail 13, of the adjusting mechanism 3 is connected with the sliding rail 13 and used for driving the sliding rail 13 to translate up and down along the height direction of the mounting groove 12, the adjusting mechanism 3 is provided with a driving end which is connected with the sliding rail 13 and used for driving the sliding rail 13 to translate up and down along the height direction of the mounting groove 12, the distance between the sliding rail 13 and the friction surface 11 can be adjusted through the adjusting mechanism 3, and the distance between the detecting end of the wear detector 14 and the friction surface 11 can be adjusted, so that the adaptability of the wear detector 14 and the brake block main body 1 is higher.
As shown in fig. 2 to 4, in some embodiments, the first driving member 21 includes a first winding roller 212 and a winding motor 213, the second driving member 22 includes a second winding roller 222 and a spiral spring 223, the first winding roller 212 is rotationally disposed on one of the mounting boxes 23, one end of the first winding roller 211 is connected with the wear detector 14, the other end is connected with the first winding roller 212, the driving end of the winding motor 213 is connected with the first winding roller 212 and is used for driving the first winding roller 212 to rotate so as to wind the first winding roller 212, the second winding roller 222 is rotationally disposed on the other mounting box 23, one end of the second winding roller 221 is connected with the wear detector 14, the other end is connected with the second winding roller 222 through the spiral spring 223, in particular, the winding motor 213 is connected on one side of the brake pad body 1 and the mounting box 23 is connected with the first winding roller 212 through a bearing, the output shaft of the winding motor 213 is connected with the brake pad body 1 and the mounting boxes 23, stable transmission rotation can be realized, the winding roller 212, the first winding roller 212 and the motor 212 can be rotationally driven by the first winding roller 212 and the motor 213, when the first winding roller 212 is driven by the first winding roller 212 and the motor 213 is made to rotate, the first winding roller 212 is driven to be close to the first winding roller 212 to the first winding roller to rotate, and the first winding roller 212 is detected to rotate, and the first winding roller is driven to rotate, and the first winding roller 212 is detected to be close to one side, which is driven to the first winding roller is rotatably and can be driven to rotate, and can be driven to rotate and roll roller is detected.
As shown in fig. 2 and 5, in some embodiments, the sliding rail 13 includes at least two sliding plates 131, an elastic block 132 is connected between two adjacent sliding plates 131, by setting the sliding rail 13 as at least two sliding plates 131, and connecting the elastic blocks 132 between two adjacent sliding plates 131, the forming state of the sliding rail 13 is suitable for a brake pad with smaller radian, by decomposing the sliding rail 13 into a plurality of sliding plates 131, the distance between the sliding plates 131 and the friction surface 11 can be adjusted in a segmented manner, thereby ensuring the accuracy of adjusting the detection position of the wear detector 14, and the sliding plates 131 are connected through the elastic blocks 132, the elastic blocks 132 are made of a stretchable shaping material, so that the connecting state of the two sliding plates 131 before and after adjustment can be ensured, so as to connect the two sliding plates 131, and ensure the sliding connection between the sliding rail 13 and the wear detector 14;
specifically, when the sliding rail 13 includes at least two sliding plates 131, the adjusting mechanism 3 includes at least two adjusting members, the adjusting members are screw rods 31, each screw rod 31 is in threaded connection with the brake pad main body 1, and one end of each screw rod 31, which is close to the friction surface 11, is uniformly and correspondingly in rotational connection with the sliding plate 131, so that each screw rod 31 is correspondingly connected with one sliding plate 131, and the screw rods 31 are in threaded connection with the brake pad main body 1, so that the screw rods 31 can rotate on the brake pad main body 1, and further the sliding of the driving sliding plate 131 along the height direction of the mounting groove 12 can be realized;
limiting blocks are arranged on two sides of two ends of each sliding plate 131, limiting grooves 133 parallel to the height direction of the mounting grooves 12 are formed in positions, corresponding to the limiting blocks, of the groove walls of the mounting grooves 12, the limiting blocks are arranged in the limiting grooves 133 and are in sliding connection with the limiting grooves 133, and the sliding relation between the limiting blocks and the limiting grooves 133 is used for limiting the moving direction of the sliding plates 131, so that the sliding plates 131 are more accurate in position adjustment, and the detection precision of the wear detector 14 after adjustment is improved.
As shown in fig. 2 and 6, in some embodiments, the sliding rail 13 may also be an integral arc plate structure, and by setting the sliding rail 13 to be an integral arc plate structure, the sliding rail 13 is suitable for a brake pad with a larger radian, and setting the sliding rail 13 to be an integral type, so that the position of the sliding rail 13 can be directly adjusted later, and the use is simple and convenient;
specifically, when the sliding rail 13 is in an integrated arc plate structure, the adjusting mechanism 3 comprises at least one adjusting piece, the adjusting piece is a screw rod 31, each screw rod 31 is in threaded connection with the brake pad main body 1, one end of each screw rod 31, which is close to the friction surface 11, is in rotational connection with the sliding rail 13, and the arrangement enables the screw rod 31 to rotate on the brake pad main body 1, so that the sliding of the sliding rail 13 along the height direction of the mounting groove 12 can be realized; specifically, the adjusting mechanism 3 may also use an electric driving rod to drive the sliding rail 13.
As shown in fig. 5 and 6, in some embodiments, both sides of the wear detector 14 are provided with push blocks 143, the push blocks 143 are slidably connected with the sliding rail 13, and the cross-sectional area of each push block 143 is gradually increased from one side facing away from the sliding rail 13 to the other side being attached to the sliding rail 13.
As shown in fig. 5, 6 and 8, in some embodiments, one end of the sliding rail 13, which is close to the friction surface 11, is provided with a sliding groove 134 along the length direction of the sliding rail 13, the sliding groove 134 is of a convex structure design, the lower side of the wear detector 14 is slidably connected with the sliding groove 134, and the sliding block can be limited to slide in the groove through the convex structure design through the sliding groove 134 and the sliding block, so that the limitation of the wear detector 14 is realized, and the wear detector 14 is prevented from being separated from the sliding rail 13.
As shown in fig. 7, in some embodiments, the driving portion includes a driving motor 24, the transmission portion includes a gear 25 and an arc rack 26, the arc rack 26 is disposed in the mounting groove 12 and coaxially disposed with the slide rail 13, the gear 25 is rotatably disposed in the wear detector 14, and the gear 25 is engaged with and rotatably connected to the arc rack 26, the driving motor 24 is connected to the gear 25 and is used for driving the gear 25 to rotate, specifically, the driving motor 24 is disposed on one side of the brake pad body 1, the driving motor 24 is mounted on a sliding plate slidably connected to the brake pad body 1, and through the disposed driving motor 24, the gear 25 and the arc rack 26, the driving motor 24 can drive the gear 25 to rotate on the arc rack 26, and further, the gear 25 can be driven to reciprocate along the length direction of the arc rack 26 by the driving motor 24, and the arc rack 26 is coaxially disposed with the slide rail 13, so that the wear detector 14 can be driven to reciprocate along the extending direction of the slide rail 13.
Working principle: after the device is installed, the position of the sliding rail 13 in the installation groove 12 is required to be adjusted by using the adjusting mechanism 3, so that the distance between the abrasion detector 14 and the friction surface 11 is adjusted, when the device is braked, the brake pad is contacted with the brake drum to generate friction force, the friction surface 11 of the brake pad is abraded, after the device is used for a period of time, the driving mechanism 2 can be started, the driving mechanism 2 is utilized to drive the abrasion detector 14 to reciprocate along the extending direction of the sliding rail 13, so as to adjust the position of the abrasion detector 14, when the friction surface 11 is abraded to a set position, the brake drum is contacted with the detection end of the abrasion detector 14, and a detection signal is sent to the controller 141, and the alarm 142 is triggered to give an alarm to remind a driver of replacing the brake pad.
According to the invention, through the arranged brake block main body 1, the friction surface 11 and the sliding rail 13 which are arranged on the brake block main body 1, and the wear detector 14 which is arranged on the sliding rail 13, when the friction surface 11 is worn to a set position, the wear detector 14 is flush with the height of the wear surface, the brake drum is contacted with the detection end of the wear detector 14, and a detection signal is sent to the controller 141 and an alarm is triggered to send out an alarm to remind a driver of replacing the brake block; the driving mechanism 2 is matched, so that the reciprocating motion of the abrasion detector 14 along the extending direction of the sliding rail 13 can be driven under the driving of the driving part and the transmission part, the abrasion detector can be detected along the movement of the length direction of the brake pad, the omnibearing abrasion detection of the brake pad is realized, and the detection precision and the comprehensiveness are improved.
The above-described embodiments of the present invention do not limit the scope of the present invention. Any other corresponding changes and modifications made in accordance with the technical idea of the present invention shall be included in the scope of the claims of the present invention.

Claims (10)

1. A drum brake pad comprising:
the brake block comprises a brake block main body, wherein an arc-shaped friction surface is formed on one side of the brake block main body, an installation groove is formed in the middle of the friction surface along the length direction of the brake block main body, a sliding rail is embedded in the installation groove, a wear detector is connected in the sliding rail in a sliding manner, the detection end of the wear detector is arranged in the installation groove and is arranged at intervals towards the opening end of the installation groove so as to detect the wear degree of the friction surface, and the wear detector is electrically connected with an automobile inner controller and an alarm;
the driving mechanism comprises a driving part and a transmission part, the driving part is in transmission connection with the wear detector through the transmission part, and the transmission part is used for converting the driving force of the driving part into the reciprocating motion of the wear detector along the extending direction of the sliding rail; when any position of the friction surface is worn to be at the same height as the wear detector, the detection end can be in contact with the brake drum so as to trigger an alarm by the controller.
2. The drum brake pad according to claim 1, wherein the driving part comprises a first driving member and a second driving member, the driving part comprises a first winding wire and a second winding wire, the two ends of the sliding rail are respectively provided with a mounting box, the first driving member is arranged on one of the mounting boxes, the driving end of the first driving member is connected with the wear detector through the first winding wire and is used for generating a driving force for driving the wear detector to slide towards the side close to the first driving member, the second driving member is arranged on the other mounting box, and the driving end of the second driving member is connected with the wear detector through the second winding wire and is used for generating a driving force for driving the wear detector to slide towards the side close to the second driving member.
3. The drum brake pad according to claim 2, wherein the first driving member includes a first winding roller and a winding motor, the second driving member includes a second winding roller and a spiral spring, the first winding roller is rotatably disposed in one of the mounting boxes, one end of the first winding wire is connected to the wear detector, the other end is connected to the first winding roller, the driving end of the winding motor is connected to the first winding roller and is used for driving the first winding roller to rotate so as to wind the first winding roller, the second winding roller is rotatably disposed in the other mounting box, one end of the second winding wire is connected to the wear detector, and the other end of the second winding wire is connected to the second winding roller through the spiral spring.
4. The drum brake pad according to claim 1, wherein the driving part comprises a driving motor, the transmission part comprises a gear and an arc-shaped rack, the arc-shaped rack is arranged in the mounting groove and coaxially arranged with the sliding rail, the gear is rotatably arranged on the wear detector, the gear is rotatably engaged with the arc-shaped rack, and the driving motor is connected with the gear and is used for driving the gear to rotate.
5. The drum brake pad of claim 1, further comprising an adjustment mechanism coupled to the brake pad body, wherein one end of the adjustment mechanism adjacent to the rail is formed with a drive end coupled to the rail and configured to drive the rail to translate up and down along the height of the mounting slot.
6. A drum brake according to claim 1, wherein the rail comprises at least two slides, and an elastic block is connected between adjacent slides.
7. The drum brake pad according to claim 6, wherein limiting blocks are arranged on two sides of two ends of each sliding plate, limiting grooves parallel to the height direction of the mounting grooves are formed in positions, corresponding to the limiting blocks, of the groove walls of the mounting grooves, and the limiting blocks are arranged in the limiting grooves and are in sliding connection with the limiting grooves.
8. A drum brake pad according to claim 1, wherein the rail is of unitary arcuate plate-like construction.
9. The drum brake pad according to claim 1, wherein a sliding groove is formed in one end of the sliding rail, which is close to the friction surface, along the length direction of the sliding rail, the sliding groove is of a convex structural design, and the lower side of the wear detector is in sliding connection with the sliding groove.
10. The drum brake pad according to claim 1, wherein push blocks are arranged on both sides of the wear detector, the push blocks are slidably connected with the sliding rail, and the cross-sectional area of the push blocks gradually increases from one side facing away from the sliding rail to the other side attached to the sliding rail.
CN202210674573.7A 2022-06-15 2022-06-15 Drum brake block Active CN114876987B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210674573.7A CN114876987B (en) 2022-06-15 2022-06-15 Drum brake block

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210674573.7A CN114876987B (en) 2022-06-15 2022-06-15 Drum brake block

Publications (2)

Publication Number Publication Date
CN114876987A CN114876987A (en) 2022-08-09
CN114876987B true CN114876987B (en) 2023-08-15

Family

ID=82681884

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210674573.7A Active CN114876987B (en) 2022-06-15 2022-06-15 Drum brake block

Country Status (1)

Country Link
CN (1) CN114876987B (en)

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11351296A (en) * 1998-06-04 1999-12-24 Tokyo Buhin Kogyo Co Ltd Brake lining wear detection device
JP2004286087A (en) * 2003-03-20 2004-10-14 Hanex Co Ltd Method for detecting abrasion
CN203130872U (en) * 2013-02-04 2013-08-14 湖北华夏弘景车桥股份有限公司 Brake structure
CN104110450A (en) * 2014-04-22 2014-10-22 衢州兰玲机电科技有限公司 Automobile drum brake
CN207364140U (en) * 2017-11-07 2018-05-15 魏东 A kind of brake shoe for being conveniently replaceable friction plate
DE102019113004A1 (en) * 2018-06-20 2019-12-24 GM Global Technology Operations LLC DETECTING A FRICTION BRAKE FAULT
DE202018106957U1 (en) * 2018-12-06 2020-03-09 Alois Kober Gmbh Drum brake with a sensor arrangement
CN210423526U (en) * 2019-05-31 2020-04-28 高邮市宏生制动器厂 Drum brake with abrasion alarming function
CN111503193A (en) * 2020-04-15 2020-08-07 临沂合力电子有限公司 Variable voltage wear sensor
CN112460174A (en) * 2020-12-15 2021-03-09 派德森（京山）汽车零部件有限公司 Brake, brake shoe abrasion alarm mechanism and alarm method thereof and EBS system
CN213206378U (en) * 2020-07-11 2021-05-14 郑州白云实业有限公司 Drum brake block capable of preventing adhesion
CN113565904A (en) * 2021-06-16 2021-10-29 高邮市顺达动力机电有限公司 Drum brake system with abrasion alarming function
CN215762975U (en) * 2021-08-12 2022-02-08 无锡晶华汽车制动器有限公司 Alarm device for abrasion of brake friction plate
CN216343581U (en) * 2021-10-26 2022-04-19 平阳县锦通汽车配件有限公司 Sensor for alarming abrasion of drum type automobile brake pad

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11351296A (en) * 1998-06-04 1999-12-24 Tokyo Buhin Kogyo Co Ltd Brake lining wear detection device
JP2004286087A (en) * 2003-03-20 2004-10-14 Hanex Co Ltd Method for detecting abrasion
CN203130872U (en) * 2013-02-04 2013-08-14 湖北华夏弘景车桥股份有限公司 Brake structure
CN104110450A (en) * 2014-04-22 2014-10-22 衢州兰玲机电科技有限公司 Automobile drum brake
CN207364140U (en) * 2017-11-07 2018-05-15 魏东 A kind of brake shoe for being conveniently replaceable friction plate
DE102019113004A1 (en) * 2018-06-20 2019-12-24 GM Global Technology Operations LLC DETECTING A FRICTION BRAKE FAULT
DE202018106957U1 (en) * 2018-12-06 2020-03-09 Alois Kober Gmbh Drum brake with a sensor arrangement
CN210423526U (en) * 2019-05-31 2020-04-28 高邮市宏生制动器厂 Drum brake with abrasion alarming function
CN111503193A (en) * 2020-04-15 2020-08-07 临沂合力电子有限公司 Variable voltage wear sensor
CN213206378U (en) * 2020-07-11 2021-05-14 郑州白云实业有限公司 Drum brake block capable of preventing adhesion
CN112460174A (en) * 2020-12-15 2021-03-09 派德森（京山）汽车零部件有限公司 Brake, brake shoe abrasion alarm mechanism and alarm method thereof and EBS system
CN113565904A (en) * 2021-06-16 2021-10-29 高邮市顺达动力机电有限公司 Drum brake system with abrasion alarming function
CN215762975U (en) * 2021-08-12 2022-02-08 无锡晶华汽车制动器有限公司 Alarm device for abrasion of brake friction plate
CN216343581U (en) * 2021-10-26 2022-04-19 平阳县锦通汽车配件有限公司 Sensor for alarming abrasion of drum type automobile brake pad

Also Published As

Publication number Publication date
CN114876987A (en) 2022-08-09

Similar Documents

Publication Publication Date Title
RU2750400C2 (en) Positioning apparatus and method of contact generation
US7849976B2 (en) Electro-mechanical brake
CN114876987B (en) Drum brake block
CN113638991A (en) New forms of energy electric axle
KR20090119486A (en) Pad gab adjusting method for electric mechanical brake system
CN211919988U (en) Device for accurately stopping skid when exceeding roller bed
CN208295010U (en) A kind of electromagnetic brake with wear detector
EP1519157A2 (en) Hall effect displacement sensor
CN215378696U (en) Sofa drive arrangement with brake function
CN110823392B (en) Movable temperature sensor
CN211082629U (en) Novel double-sided disc brake
KR20220099863A (en) Brake pad abrasion detection apparatus for vehicle
KR20200108543A (en) Electric caliper brake for motor on caliper
RU91395U1 (en) ELECTRIC BRAKE FOR MECHANICAL VEHICLE
US20020014959A1 (en) Automatic drum brake adjusting apparatus and drum brake having such an adjusting apparatus
CN205737582U (en) Rail vehicle obstacle detector
CN220467229U (en) Elevator traction sheave speed measuring anti-falling device
CN220056162U (en) Brake detection mechanism
CN219251614U (en) Speed control device and electric skateboard
CN109910841A (en) A kind of vehicle disc brake Brake energy recovery utilizes device
CN219991018U (en) Elevator brake with high stability
CN115694114A (en) Servo embedded electric cylinder
KR200197893Y1 (en) Sensor for detecting suddden braking
KR20150001403A (en) Terminal brake for downhill facility
CN220500689U (en) Tread brake protection device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant