CN111847175B - Elevator brake shoe abrasion detection device and method - Google Patents
Elevator brake shoe abrasion detection device and method Download PDFInfo
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- CN111847175B CN111847175B CN202010884510.5A CN202010884510A CN111847175B CN 111847175 B CN111847175 B CN 111847175B CN 202010884510 A CN202010884510 A CN 202010884510A CN 111847175 B CN111847175 B CN 111847175B
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- Prior art keywords
- elevator
- resistor
- detection device
- brake shoe
- driving motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/54—Safety gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
- B66D5/08—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect embodying blocks or shoes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/34—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring roughness or irregularity of surfaces
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to the field of elevators, in particular to an elevator brake lining wear detection device and a method, wherein the elevator brake lining wear detection device comprises resistors which are uniformly embedded in a brake lining of a band-type brake device and are easy to wear, a shaft sleeve fixed on the outer side of an output shaft of an elevator driving motor and a multi-path resistor test device for detecting the resistance values of the resistors; the shaft sleeve is provided with an electric rotary joint, the output end of the electric rotary joint is connected with the shaft sleeve, and the input end of the electric rotary joint is connected with the input end or the output end of the multi-path resistance testing equipment and used for preventing an electric wire from being wound on an output shaft of the elevator driving motor when the elevator driving motor rotates; the conductor resistor is embedded into the brake lining, the resistor and the brake lining are worn synchronously, and the wear thickness and the wear uniformity of the brake lining are determined by measuring and changing the resistance value of the embedded resistor, so that the real-time detection of the brake lining wear condition in the normal use process of the elevator is realized, and the elevator brake lining wear detection device is suitable for further popularization and application.
Description
Technical Field
The invention relates to the field of elevators, in particular to an elevator brake shoe abrasion detection device and method.
Background
With the improvement of living standard, the elevator becomes an indispensable vehicle for people to go out. The elevator is opened and stopped comparatively frequently in the use. The main part of the elevator safety stop is a band-type brake device, and a brake shoe in the band-type brake device can be continuously abraded through frequent band-type brake actions. After the abrasion of the brake shoe exceeds a certain thickness, the defects of insufficient brake force, easy ladder sliding, uneven ladder stopping and the like can occur, and the accidents of people injury such as top rushing, bottom squating, shearing and the like can be caused in serious cases. At present, the abrasion of the brake shoe of the elevator is judged by adopting a field ruler measurement method, and the abrasion condition of the brake shoe in the normal use process of the elevator cannot be detected in real time.
Disclosure of Invention
In order to solve the problems, the invention provides a device and a method for detecting the abrasion of an elevator brake shoe.
In order to achieve the purpose, the invention is realized by the following technical scheme:
an elevator brake shoe abrasion detection device comprises resistors which are uniformly embedded in a brake shoe of a band-type brake device and are easy to abrade, a shaft sleeve fixed on the outer side of an output shaft of an elevator driving motor and a multi-path resistor test device for detecting the resistance values of the resistors;
the elevator driving motor protection device is characterized in that an electric rotary joint is mounted on the shaft sleeve, the output end of the electric rotary joint is connected with the shaft sleeve, the input end of the electric rotary joint is connected with the input end or the output end of a multi-path resistance testing device and used for preventing an electric wire from being wound on an output shaft of the elevator driving motor when the elevator driving motor rotates, the other end of the multi-path resistance testing device is connected with each resistor through a lead respectively, and an insulating layer is arranged between the side walls, abutted to the elevator driving motor, of the shaft sleeve.
Further, the axle sleeve includes that two sets of tubulose arc plates of complete set can splice, passes through connecting piece fixed connection between two sets of arc plates, pass through the key-type connection between arc plate and elevator driving motor's the output shaft, the insulating layer is located on the inner wall of arc plate.
Furthermore, the corresponding positions of the arc-shaped plates are respectively provided with a thread mounting groove and a thread hole, and the two groups of arc-shaped plates are connected through bolts.
Preferably, the resistor is a graphite resistor.
Preferably, the multi-path resistance testing device is in communication connection with an external monitoring device.
Preferably, the monitoring device is a computer.
The invention further provides an elevator brake shoe wear detection method based on the elevator brake shoe wear detection device, which specifically comprises the following steps:
s1: measuring resistance values of resistors with the same type and different lengths, and manufacturing a standard bus;
s2: when the brake device is used for braking, the multi-path resistance testing equipment forms a loop to respectively measure the resistance values of the resistors of each group, and the length of the resistors under the corresponding resistance values is calculated according to the standard bus measured by S1 so as to measure and calculate the abrasion loss of the brake lining.
Compared with the prior art, the invention has the beneficial effects that:
the conductor resistor is embedded into the brake lining, the resistor and the brake lining are worn synchronously, and the wear thickness and the wear uniformity of the brake lining are determined by measuring and changing the resistance value of the embedded resistor, so that the real-time detection of the brake lining wear condition in the normal use process of the elevator is realized, and the elevator brake lining wear detection device is suitable for further popularization and application.
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of the brake shoe and resistor assembly of the present invention.
The reference numerals in the drawings denote: a shaft sleeve-1; an electric rotary joint-2; an elevator drive motor-3; a band-type brake device-4; a traction sheave-5; bolt-6; brake shoe-7; resistance-8; a lead-9; an arc-shaped plate member-11.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present 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.
The elevator brake lining wear detection device of the embodiment, referring to fig. 1-2, includes resistors 8 which are uniformly embedded in a brake lining 7 of a band-type brake device 4 (wherein the band-type brake device 4 is mainly used for realizing braking of a traction sheave 5 and is an existing device), a shaft sleeve 1 (the shaft sleeve 1 is made of a conducting wire metal material, preferably steel) fixed on the outer side of an output shaft of an elevator driving motor 3, and a multi-path resistance test device (not shown in the figure) for detecting the resistance values of the resistors 8, wherein the multi-path resistance test device is an existing device capable of simultaneously detecting the resistance values of a plurality of groups of resistors; the resistor 8 is columnar, and the area of any cross section is the same; the same type graphite resistor is selected for the resistor 8, one end of the resistor 8 facing the output shaft of the elevator driving motor 3 is parallel and level with the clamping surface of the brake shoe 7, and when the brake shoe 7 on the band-type brake device 4 tightly holds the shaft sleeve 1, the graphite resistor is in contact with the shaft sleeve 1.
The electric rotary joint 2 is arranged on the shaft sleeve 1, the output end of the electric rotary joint 2 is connected with the shaft sleeve 1, the input end of the electric rotary joint 2 is connected with the input end or the output end of the multi-path resistance testing equipment, and the electric rotary joint 2 is an existing component and is used for preventing an electric wire from being wound on an output shaft of the elevator driving motor 3 when the elevator driving motor 3 rotates; the other end of the multi-path resistance testing equipment is respectively connected with each resistor 8 through a lead 9 (the lead is an electric wire), an insulating layer is arranged between the side walls of the shaft sleeve 1 and the elevator driving motor 3 in a butting mode, the shaft sleeve 1 is prevented from being tightly held by a brake shoe 7 on the band-type brake device 4, and after the multi-path resistance testing equipment forms a loop, current is transmitted to an output shaft of the elevator driving motor 3 through the shaft sleeve 1 to form shaft current to damage the elevator driving motor 3.
Referring to the attached drawing 2, the shaft sleeve 1 comprises two sets of tubular arc-shaped plates 11 which can be spliced, the two sets of arc-shaped plates 11 are fixedly connected through connecting pieces, the connecting pieces can also be used as clamping hoops, the arc-shaped plates 11 are connected with the output shaft of the elevator driving motor 3 through key connection, the shaft sleeve 1 is prevented from rotating relative to the output shaft of the elevator driving motor 3, and the insulating layer is arranged on the inner wall of the arc-shaped plates 11.
Referring to fig. 2, the corresponding positions of the arc-shaped plates 11 are respectively provided with a thread mounting groove and a thread hole, and the two groups of arc-shaped plates 11 are connected through bolts 6.
Furthermore, the multi-path resistance testing equipment is in communication connection with external monitoring equipment, and the monitoring equipment is a computer; the method is used for realizing real-time and long-term online monitoring of the abrasion of the elevator brake shoe.
The embodiment further provides an elevator brake lining wear online detection method based on the elevator brake lining wear detection device, which specifically comprises the following steps:
s1: measuring the resistance values of the resistors 8 with the same type and different lengths, and manufacturing a standard bus; the resistance value of the resistor 8 is in a linear relation with the length, namely, the resistance value of the resistor 8 is reduced along with the reduction of the length of the resistor 8 (a defined formula is that the resistance value R is rho L/S, rho represents the resistivity of the resistor and is determined by the property of the resistor, L represents the length of the resistor, and S represents the cross section area of the resistor), the resistance values of the resistor 8 under different lengths are measured, and a standard bus of L (length) -R (resistance value) is manufactured.
S2: when the band-type brake device 4 is used for band-type brake, the resistor 8 in the brake shoe 7 is pressed on the shaft sleeve 1, and the shaft sleeve 1 is made of conductive material, so that when the resistor 8 is pressed on the shaft sleeve 1, the multi-path resistance testing equipment forms a loop (the current at the output end of the multi-path resistance testing equipment flows into the output end of the multi-path resistance testing equipment through the lead 9, the shaft sleeve 1 and the resistor 8), the resistance values of the resistors 8 in each group are respectively measured, the length of the resistor 8 under the corresponding resistance value is calculated according to the standard bus measured by S1, and the abrasion loss of the brake shoe is calculated.
When the brake shoe 7 is worn, the resistor 8 embedded in the brake shoe is also worn synchronously, and the resistance value of the resistor 8 changes after the resistor 8 is worn.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. The elevator brake shoe abrasion detection device is characterized by comprising resistors (8) which are uniformly embedded in brake shoes (7) of a band-type brake device and easy to abrade, a shaft sleeve (1) fixed on the outer side of an output shaft of an elevator driving motor (3) and multi-path resistor test equipment for detecting the resistance values of the resistors (8);
an electric rotary joint (2) is mounted on the shaft sleeve (1), the output end of the electric rotary joint (2) is connected with the shaft sleeve (1), the input end of the electric rotary joint (2) is connected with the input end or the output end of a multi-path resistance testing device and used for preventing an electric wire from being wound on the output shaft of the elevator driving motor (3) when the elevator driving motor (3) rotates, the other end of the multi-path resistance testing device is respectively connected with each resistor (8) through a lead (9), and an insulating layer is arranged between the side walls, abutted to the elevator driving motor (3), of the shaft sleeve (1);
the shaft sleeve (1) comprises two groups of arc-shaped plates (11) which can be spliced into a complete set of tubular shape, the two groups of arc-shaped plates (11) are fixedly connected through a connecting piece, the arc-shaped plates (11) are connected with an output shaft of an elevator driving motor (3) through keys, and the insulating layer is arranged on the inner wall of the arc-shaped plates (11);
an elevator brake shoe abrasion detection method of an elevator brake shoe abrasion detection device comprises the following steps:
s1: measuring the resistance values of the resistors (8) with the same type and different lengths, and manufacturing a standard bus;
s2: when the brake device (4) is braked, the multi-path resistance testing equipment forms a loop to respectively measure the resistance values of the resistors (8), and the lengths of the resistors (8) under the corresponding resistance values are calculated according to the standard bus measured by S1 so as to measure the abrasion loss of the brake lining.
2. The elevator brake shoe wear detection device according to claim 1, wherein the arc-shaped plates (11) are provided with a threaded mounting groove and a threaded hole at corresponding positions, and the two groups of arc-shaped plates (11) are connected through the bolt (6).
3. The elevator brake shoe wear detection device according to claim 1, characterized in that the resistor (8) is a graphite resistor.
4. The elevator brake shoe wear detection device of claim 1, wherein the multi-way resistance testing device is in communication with an external monitoring device.
5. The elevator brake shoe wear detection device of claim 4, wherein the monitoring device is a computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010884510.5A CN111847175B (en) | 2020-08-28 | 2020-08-28 | Elevator brake shoe abrasion detection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010884510.5A CN111847175B (en) | 2020-08-28 | 2020-08-28 | Elevator brake shoe abrasion detection device and method |
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| Publication Number | Publication Date |
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| CN111847175A CN111847175A (en) | 2020-10-30 |
| CN111847175B true CN111847175B (en) | 2022-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010884510.5A Active CN111847175B (en) | 2020-08-28 | 2020-08-28 | Elevator brake shoe abrasion detection device and method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155509A (en) * | 2011-04-06 | 2011-08-17 | 吉林大学 | Device for detecting wearing capacity of brake shoe of automobile |
| CN204828410U (en) * | 2015-07-31 | 2015-12-02 | 铜仁学院 | Device of observable brake block thickness |
| CN105697620A (en) * | 2016-05-06 | 2016-06-22 | 铜仁学院 | Device applicable to exploring thickness range of brake pad and manufacturing method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102774373B (en) * | 2012-07-19 | 2014-07-09 | 安徽工业大学 | System and method for detecting thickness of automobile brake pad in real time |
| SG11201509388WA (en) * | 2013-06-21 | 2016-01-28 | Inventio Ag | Elevator brake force and distance sensor |
| CN104129731A (en) * | 2014-06-12 | 2014-11-05 | 苏州润吉驱动技术有限公司 | Elevator brake |
| CN208282770U (en) * | 2018-04-18 | 2018-12-25 | 武汉元丰汽车零部件有限公司 | Brake block detecting thickness circuit, brake system and motor vehicle |
-
2020
- 2020-08-28 CN CN202010884510.5A patent/CN111847175B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155509A (en) * | 2011-04-06 | 2011-08-17 | 吉林大学 | Device for detecting wearing capacity of brake shoe of automobile |
| CN204828410U (en) * | 2015-07-31 | 2015-12-02 | 铜仁学院 | Device of observable brake block thickness |
| CN105697620A (en) * | 2016-05-06 | 2016-06-22 | 铜仁学院 | Device applicable to exploring thickness range of brake pad and manufacturing method thereof |
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| CN111847175A (en) | 2020-10-30 |
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