CN112390109A - Elastic friction member for elevator and wear amount judgment method - Google Patents
Elastic friction member for elevator and wear amount judgment method Download PDFInfo
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- CN112390109A CN112390109A CN202011282671.3A CN202011282671A CN112390109A CN 112390109 A CN112390109 A CN 112390109A CN 202011282671 A CN202011282671 A CN 202011282671A CN 112390109 A CN112390109 A CN 112390109A
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- Prior art keywords
- rigid
- elastic friction
- friction member
- elevator
- elastic
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Classifications
-
- 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
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/044—Mechanical overspeed governors
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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
- 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
- B66B5/0037—Performance analysers
-
- 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
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
-
- 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
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
An elastic friction member for an elevator and a method for determining an amount of wear. The invention discloses an elastic friction piece for an elevator, which comprises an elastic body and a plurality of rigid beads. The elastomeric body has an external friction surface for contacting a rigid member. The plurality of rigid beads is embedded in the elastomeric body. When the elastic friction member is worn to expose the rigid bead, the rigid member contacts and collides with the rigid bead and generates a contact and collision sound. When receiving the contact and collision sound between the rigid component and the rigid bead, the elevator maintainer judges that the elastic friction piece is excessively worn and needs to be replaced. Therefore, the elevator speed limiter can conveniently judge whether the elastic friction piece is excessively worn and needs to be replaced without dismounting the elevator speed limiter. In addition, the invention also improves the safety of the elevator operation.
Description
Technical Field
The present invention relates to an elastic friction member for an elevator and a wear amount determination method for determining whether the elastic friction member for an elevator needs to be replaced.
Background
Elevator governors are one of the safety control components in elevator safety protection systems. When the elevator is in operation, no matter what reason causes the car to overspeed or even to fall, and all other safety protection devices do not work, the speed limiter and the safety tongs perform linkage action to stop the elevator car. The overspeed governor safety gear system is the essential safety device of elevator, and when the elevator was overspeed, the operation was out of control or the linkage broke, the overspeed governor safety gear device stopped elevator car on the guide rail rapidly to keep quiescent condition, thereby avoid taking place casualties and equipment damage accident. At present, a speed limiter in the market utilizes different jumping heights of sine wheels at different speeds to trigger a mechanical and electrical safety switch so as to be linked with a safety gear for braking.
Because the sine wheel is a cast iron part, an O-shaped ring (elastic rubber part) arranged on the friction wheel of the pre-contact pendulum is contacted with the sine wheel. Since metal is harder than rubber, the wear state of the O-ring needs to be monitored. However, because the O-ring is installed at a position where vision cannot be observed, the existing monitoring mode is to inspect whether the O-ring needs to be replaced after being periodically detached, so that workload and difficulty are high, the O-ring is not easy to identify, safety accidents caused by excessive abrasion of the O-ring are easy to happen, and great potential safety hazards exist.
Disclosure of Invention
An object of the present invention is to solve at least one of the above problems and disadvantages in the prior art.
According to one aspect of the present invention, there is provided an elastic friction member for an elevator, including an elastic body and a plurality of rigid beads. The elastomeric body has an external friction surface for contacting a rigid member. The plurality of rigid beads is embedded in the elastomeric body. When the elastic friction member is worn to expose the rigid bead, the rigid member contacts and collides with the rigid bead and generates a contact and collision sound. When receiving the contact and collision sound between the rigid component and the rigid bead, the elevator maintainer judges that the elastic friction piece is excessively worn and needs to be replaced.
According to an exemplary embodiment of the invention the elastic friction element is mounted in the elevator speed limiter in a position which is not visually observable.
According to another exemplary embodiment of the invention, the embedded depth of the rigid bead with respect to the external friction surface is equal to or less than the maximum amount of wear allowed by the elastic friction member.
According to another exemplary embodiment of the present invention, the plurality of rigid beads are evenly spaced around a circumferential direction of the elastic friction member in the elastic body; when the elastic friction member is worn to expose the rigid bead, contact and collision sounds between the rigid member and the rigid bead periodically occur at predetermined time intervals.
According to another exemplary embodiment of the present invention, the elastic body of the elastic friction member has an O-ring shape in cross-section and the rigid bead has a spherical shape.
According to another exemplary embodiment of the present invention, the elastic body of the elastic friction member is a hollow cylindrical rubber body, and the rigid bead is a ball-shaped steel bead.
According to another exemplary embodiment of the invention, the rigid part is a sine wheel of the elevator speed limiter, and the elastic friction piece is mounted on a friction wheel of a pre-contact pendulum of the elevator speed limiter; the sine wheel jumps and contacts the elastic friction piece when a rope wheel of the elevator speed limiter rotates.
According to another exemplary embodiment of the present invention, the diameter of the rigid bead is smaller than half of the difference between the outer diameter and the inner diameter of the elastic body.
According to another exemplary embodiment of the present invention, the rigid beads have a diameter in the range of 1 to 3 mm.
According to another exemplary embodiment of the present invention, the rigid beads have a diameter of 1mm, 2mm or 3 mm.
According to another aspect of the present invention, there is provided a wear amount judging method for judging whether or not the elastic friction member for an elevator needs to be replaced, comprising the steps of: when contact and collision sounds generated between the rigid beads of the elastic friction piece and the rigid component are received, the elastic friction piece is judged to be excessively worn and needs to be replaced.
In each of the foregoing exemplary embodiments according to the present invention, an elevator service person can replace the excessively worn elastic friction member in time according to the prompt of the contact and collision sound between the rigid member and the rigid bead, and thus, it can be conveniently determined whether the elastic friction member is excessively worn and needs to be replaced without detaching the elevator governor. In addition, the invention also improves the safety of the elevator operation.
Other objects and advantages of the present invention will become apparent from the following description of the invention which refers to the accompanying drawings, and may assist in a comprehensive understanding of the invention.
Drawings
Fig. 1 shows a schematic perspective view of an elastic friction member for an elevator according to an exemplary embodiment of the present invention;
fig. 2 shows a cross-sectional view of the elastic friction member for an elevator shown in fig. 1.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention and should not be construed as limiting the invention.
Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in schematic form in order to simplify the drawing.
According to one general technical concept of the present invention, there is provided an elastic friction member for an elevator, including an elastic body and a plurality of rigid beads. The elastomeric body has an external friction surface for contacting a rigid member. The plurality of rigid beads is embedded in the elastomeric body. When the elastic friction member is worn to expose the rigid bead, the rigid member contacts and collides with the rigid bead and generates a contact and collision sound. When receiving the contact and collision sound between the rigid component and the rigid bead, the elevator maintainer judges that the elastic friction piece is excessively worn and needs to be replaced.
According to another general technical concept of the present invention, there is provided a wear amount judging method for judging whether or not the aforementioned elastic friction member for an elevator needs to be replaced, including the steps of: when contact and collision sounds generated between the rigid beads of the elastic friction piece and the rigid component are received, the elastic friction piece is judged to be excessively worn and needs to be replaced.
Fig. 1 shows a schematic perspective view of an elastic friction member 100 for an elevator according to an exemplary embodiment of the present invention; fig. 2 shows a cross-sectional view of the elastic friction member 100 for an elevator shown in fig. 1.
As shown in fig. 1 and 2, in the illustrated embodiment, the elastic friction member 100 for an elevator mainly includes an elastic body 110, and the elastic body 110 has an outer friction surface 110a for contacting a rigid member (not shown).
As shown in fig. 1 and 2, in the illustrated embodiment, the resilient friction member 100 further includes a plurality of rigid beads 120 embedded in the elastomeric body 110. When the elastic friction member 100 is worn to expose the rigid beads 120, the rigid members contact and collide with the rigid beads 120 and generate contact and collision sounds. At this time, when contact and collision sounds between the rigid member and the rigid beads 120 are received, the elevator service man can judge that the elastic friction member 100 is excessively worn and needs to be replaced.
As shown in fig. 1 and 2, in the illustrated embodiment, the resilient friction member 100 is mounted in an elevator governor in a location that is not visually observable. Therefore, in the prior art, an elevator service person needs to disassemble the elevator governor to see whether the elastic friction member 100 is excessively worn. The invention can intuitively, conveniently and accurately judge whether the elastic friction piece 100 is excessively worn or not without disassembling the elevator speed limiter.
As shown in fig. 1 and 2, in the illustrated embodiment, the depth of embedment of the rigid beads 120 with respect to the external friction surface 110a is equal to or less than the maximum amount of wear allowed by the elastic friction member 100.
As shown in fig. 1 and 2, in the illustrated embodiment, a plurality of rigid beads 120 are evenly spaced around the circumferential direction of the elastic friction member 100 in the elastic body 110. When the elastic friction member 100 is worn to expose the rigid beads 120, contact and collision sounds between the rigid members and the rigid beads 120 periodically occur at predetermined time intervals.
As shown in fig. 1 and 2, in the illustrated embodiment, the elastic body 110 of the elastic friction member 100 has an O-ring shape in cross section, and the rigid bead 120 has a spherical shape.
As shown in fig. 1 and 2, in the illustrated embodiment, the elastic body 110 of the elastic friction member 100 is a hollow cylindrical rubber body, and the rigid bead 120 is a ball-shaped steel bead.
As shown in fig. 1 and 2, in the illustrated embodiment, the rigid member is a sine wheel of an elevator governor and the resilient friction member 100 is mounted on a friction wheel of a pre-touch pendulum of the elevator governor. The sine wheel jumps and contacts the elastic friction member 100 when the sheave of the elevator governor rotates.
As shown in fig. 1 and 2, in the illustrated embodiment, the diameter of the rigid bead 120 is less than half of the difference between the outer and inner diameters of the elastomeric body 110.
As shown in FIGS. 1 and 2, in the illustrated embodiment, the rigid beads 120 can have a diameter in the range of 1-3 mm. For example, the rigid beads 120 may be 1mm, 2mm, or 3mm in diameter. However, the diameter of the rigid beads 120 is not limited thereto, and may be determined according to the specific size of the elastic friction member 100.
As shown in fig. 1 and 2, in another exemplary embodiment of the present invention, there is also disclosed a wear amount judging method for judging whether the aforementioned elastic friction member for an elevator needs to be replaced, the wear amount judging method comprising the steps of:
when the contact and collision sound generated between the rigid bead 120 of the elastic friction member 100 and the rigid member is received, it is judged that the elastic friction member 100 is excessively worn and needs to be replaced.
Although not shown, in an exemplary embodiment of the invention, the elevator car accidental movement prevention device further comprises a detection device for detecting whether an accidental movement of the elevator car has occurred. When the detecting means detects the occurrence of an unexpected movement of the elevator car, the electromagnetic actuating means 400 is immediately deenergized to move the pair of brake shoes 301, 302 from the non-braking position to the braking position by the elastic urging force of the spring 305.
It will be appreciated by those skilled in the art that the embodiments described above are exemplary and can be modified by those skilled in the art, and that the structures described in the various embodiments can be freely combined without conflict in structure or principle.
Although the present invention has been described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to be illustrative of preferred embodiments of the present invention and should not be construed as limiting the invention.
Although a few embodiments of the present general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the appended claims and their equivalents.
It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude a plurality. Furthermore, any reference signs in the claims shall not be construed as limiting the scope of the invention.
Claims (11)
1. An elastic friction member for an elevator, comprising:
an elastic body (110) having an external friction surface (110a) for contacting a rigid member,
the method is characterized in that:
the elastic friction member (100) further comprising a plurality of rigid beads (120) embedded in the elastic body (110),
when the elastic friction member (100) is worn to expose the rigid bead (120), the rigid member contacts and collides with the rigid bead (120) and generates contact and collision sound,
when receiving the contact and collision sound between the rigid member and the rigid bead (120), the elevator service man judges that the elastic friction member (100) is excessively worn and needs to be replaced.
2. The elastic friction member for an elevator according to claim 1, characterized in that:
the resilient friction member (100) is mounted in the elevator governor in a position that is not visually observable.
3. The elastic friction member for an elevator according to claim 1, characterized in that:
the embedded depth of the rigid bead (120) with respect to the external friction face (110a) is equal to or less than the maximum amount of wear allowed by the elastic friction member (100).
4. The elastic friction member for an elevator according to claim 1, characterized in that:
the plurality of rigid beads (120) are evenly spaced around the circumferential direction of the elastic friction member (100) in the elastic body (110);
when the elastic friction member (100) is worn to expose the rigid bead (120), contact and collision sounds between the rigid member and the rigid bead (120) periodically occur at predetermined time intervals.
5. The elastic friction member for an elevator according to claim 1, characterized in that:
the section of the elastic body (110) of the elastic friction piece (100) is in an O-shaped ring shape, and the rigid bead (120) is in a spherical shape.
6. The elastic friction member for an elevator according to claim 1, characterized in that:
the elastic friction piece (100) is characterized in that an elastic body (110) is a hollow cylindrical rubber body, and the rigid beads (120) are spherical steel balls.
7. The elastic friction member for an elevator according to claim 1, characterized in that:
the rigid component is a sine wheel of the elevator speed limiter, and the elastic friction piece (100) is installed on a friction wheel of a pre-contact pendulum of the elevator speed limiter;
the sine wheel jumps and contacts the elastic friction piece (100) when a rope wheel of the elevator speed limiter rotates.
8. The elastic friction member for an elevator according to claim 5, characterized in that:
the diameter of the rigid bead (120) is less than half of the difference between the outer and inner diameters of the elastomeric body (110).
9. The elastic friction member for an elevator according to claim 1, characterized in that: the diameter of the rigid bead (120) is within the range of 1-3 mm.
10. The elastic friction member for an elevator according to claim 1, characterized in that: the rigid beads (120) have a diameter of 1mm, 2mm or 3 mm.
11. A wear amount judging method for judging whether or not an elastic friction member for an elevator described in any one of claims 1 to 10 needs to be replaced, comprising the steps of:
when the rigid bead (120) of the elastic friction piece (100) and a rigid component generate contact and collision sound, the elastic friction piece (100) is judged to be excessively worn and needs to be replaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011282671.3A CN112390109A (en) | 2020-11-17 | 2020-11-17 | Elastic friction member for elevator and wear amount judgment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011282671.3A CN112390109A (en) | 2020-11-17 | 2020-11-17 | Elastic friction member for elevator and wear amount judgment method |
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| Publication Number | Publication Date |
|---|---|
| CN112390109A true CN112390109A (en) | 2021-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011282671.3A Pending CN112390109A (en) | 2020-11-17 | 2020-11-17 | Elastic friction member for elevator and wear amount judgment method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514997A (en) * | 2011-12-08 | 2012-06-27 | 安徽丰海起重设备制造有限公司 | Fall-protection safety device of lifter |
| CN203612920U (en) * | 2013-12-24 | 2014-05-28 | 无锡科通工程机械制造有限公司 | Speed governor |
| CN204873322U (en) * | 2015-08-25 | 2015-12-16 | 宁波奥德普电梯部件有限公司 | Elevator overspeed governor |
| CN208666836U (en) * | 2018-07-18 | 2019-03-29 | 康达电梯有限公司 | A kind of elevator safety gear emergency brake buffer unit |
| CN209469797U (en) * | 2019-01-15 | 2019-10-08 | 青岛克洛克密封技术有限公司 | A kind of cylinder sealing element |
-
2020
- 2020-11-17 CN CN202011282671.3A patent/CN112390109A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514997A (en) * | 2011-12-08 | 2012-06-27 | 安徽丰海起重设备制造有限公司 | Fall-protection safety device of lifter |
| CN203612920U (en) * | 2013-12-24 | 2014-05-28 | 无锡科通工程机械制造有限公司 | Speed governor |
| CN204873322U (en) * | 2015-08-25 | 2015-12-16 | 宁波奥德普电梯部件有限公司 | Elevator overspeed governor |
| CN208666836U (en) * | 2018-07-18 | 2019-03-29 | 康达电梯有限公司 | A kind of elevator safety gear emergency brake buffer unit |
| CN209469797U (en) * | 2019-01-15 | 2019-10-08 | 青岛克洛克密封技术有限公司 | A kind of cylinder sealing element |
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Application publication date: 20210223 |