CN109592531B - Speed limiter device with automatic return function - Google Patents
Speed limiter device with automatic return function Download PDFInfo
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- CN109592531B CN109592531B CN201811441898.0A CN201811441898A CN109592531B CN 109592531 B CN109592531 B CN 109592531B CN 201811441898 A CN201811441898 A CN 201811441898A CN 109592531 B CN109592531 B CN 109592531B
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- China
- Prior art keywords
- speed limiter
- transmission gear
- wheel
- fixing piece
- inclined surface
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Classifications
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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
- B66B5/02—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
Abstract
The invention belongs to the technical field of speed limiters, and particularly discloses a speed limiter device with an automatic return function, which comprises a speed limiter mounting seat and a speed limiter wheel, wherein a centrifugal weight, a first limiting part, a brake block and a brake wheel are arranged on the speed limiter mounting seat, a first transmission gear is hinged at one end part of the brake block, a second transmission gear is arranged on the speed limiter wheel in the direction parallel to the axial direction of the speed limiter wheel, an inclined surface part is arranged on the upper end surface of the second transmission gear, the second transmission gear is meshed with the first transmission gear, a first fixing part is arranged on the speed limiter wheel, an inclined surface button which can be in line contact with the inclined surface part of the second transmission gear is arranged on the first fixing part, a touch assembly is arranged on the speed limiter mounting seat, and a second compression spring is arranged between the bottom of the first fixing part and the upper end surface of the second transmission gear. The speed limiter device can effectively avoid accidents and errors caused by elevator operation, so that an elevator car in running stops in time, is convenient to recover, is safe and reliable, does not need manual operation, and can be widely applied to elevator types without machine room.
Description
Technical Field
The invention belongs to the technical field of elevator speed limiters, and particularly relates to a speed limiter device with an automatic return function.
Background
Compared with an elevator with a machine room, the elevator without the machine room has the advantages that a control cabinet, a traction machine, a speed limiter and the like in the original machine room are moved to the top or the side part of an elevator shaft, so that the traditional machine room is omitted, and the miniaturization is realized on the premise of keeping the original performance, so that the special requirements of customers on the height and the roof are met.
In the case of elevators, the speed limiter is one of the safety control parts, and is a very effective emergency braking device for the elevator car, and when the elevator is overspeed or even at risk of falling for whatever reason in operation, and all other safety protection devices are not active, the speed limiter and the safety gear act in a linkage manner, so that the elevator car in operation can be stopped.
In the prior art, the speed limiter of the existing elevator usually adopts manual operation or motor action to realize the reset action of the speed limiter, but the elevator without a machine room cannot be operated by manpower, and the motor action cost is high. And the existing elevator seed speed limiter of the small machine room can be reset only by detecting the speed limiter by a handle, so that the personal safety is threatened to a certain extent.
Therefore, development of a speed limiter device with an automatic recovery function, which can effectively avoid accidents and errors caused by operation, is safe and reliable to use and reduces cost, is urgent.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and particularly discloses a speed limiter device with an automatic recovery function, which can effectively avoid accidents and errors caused by elevator operation, can realize timely and accurate speed limitation, can stop an elevator car in running in time, can recover a state after an ascending or flat layer is inspected, is convenient and quick, is safe and reliable, does not need manual operation, and can be widely applied to elevator types without a machine room.
In order to achieve the technical purpose, the invention is realized according to the following technical scheme:
the invention discloses a speed limiter device with an automatic recovery function, which comprises a speed limiter mounting seat and a speed limiter wheel, wherein centrifugal weights, a first limiting part, a brake block and a brake wheel which are arranged in pairs are mounted on the speed limiter mounting seat, the brake block and the brake wheel are matched to realize braking, a first compression spring is arranged at the bottom of the brake block, a first transmission gear is hinged at one end part of the brake block, a second transmission gear is mounted on the speed limiter wheel in the direction parallel to the axial direction of the speed limiter wheel, the first transmission gear is a straight gear, an inclined surface part is arranged on the upper end surface of the second transmission gear, the second transmission gear is meshed with the first transmission gear, a first fixing part is arranged on the speed limiter wheel, an inclined surface button which can be in line contact with the inclined surface part of the second transmission gear is arranged on the first fixing part, a touch assembly which can be used for touching the second transmission gear to rotate with the inclined surface button is arranged on the speed limiter mounting seat, a second button is arranged between the bottom of the first fixing part and the upper end surface of the second transmission gear, and the second button is arranged between the second pressing spring and the upper end surface of the second transmission gear, and the second pressing spring is in a tensioning state through the second compression spring.
As a further improvement of the technology, the touch assembly comprises a second fixing piece fixed on the speed limiter installation seat and a touch roller arranged on the second fixing piece, when the speed limiter wheel rotates rightwards within a circle, the touch roller touches the inclined plane button after rolling and presses the inclined plane button in the axial direction, and the inclined plane button presses the second transmission gear to drive the second transmission gear to rotate.
As a further improvement of the technology, the second fixing piece is a U-shaped supporting frame, and the touch roller penetrates through the bottom transverse end of the U-shaped supporting frame.
As a further improvement of the technology, the speed limiter mounting seat is a U-shaped frame body, and the second fixing piece is correspondingly arranged on the top of the vertical end of the U-shaped frame body.
As a further improvement of the above technology, the speed limiter wheel is further provided with a second limiting member, and the second limiting member is arranged corresponding to one end of the first transmission gear.
As a further improvement of the above technology, the inclined-plane button is a wedge-shaped block with an inclined plane on the upper end surface.
As a further improvement of the above technology, the inclined surface portion on the end face of the second transmission gear is a groove portion, the bottom surface of the groove portion is an inclined surface, and the groove portion and the first fixing piece are located at the same side position of the gear shaft of the second transmission gear.
As a further improvement of the technology, the first fixing piece is a similar U-shaped elastic support with two different vertical sides in cross section, the short vertical sides of the U-shaped elastic support are fixedly arranged on the speed limiter wheel, the end parts of the long vertical sides of the U-shaped elastic support are fixedly arranged on the gear shaft of the second transmission gear, and the inclined plane buttons are fixed at the end parts of the outer surfaces of the long vertical sides of the first fixing piece.
As a further improvement of the above technique: the second compression spring is sleeved on the gear shaft of the second transmission gear.
Compared with the prior art, the invention has the beneficial effects that:
(1) The speed limiter device with the automatic recovery function is arranged in a purely mechanical structure mode, is more stable than an electrical control mode, is not easy to be interfered by electric power, and is safe and convenient to use;
(2) The speed limiter device with the automatic recovery function does not need a motor, has no electric energy loss and is low in manufacturing cost;
(3) The speed limiter device with the automatic recovery function can recover the state only by overhauling the ascending or flat layer after being powered on, does not need manual operation, and is suitable for the elevator without a machine room.
Drawings
The invention is described in detail below with reference to the attached drawings and specific examples:
fig. 1 is a perspective view of a speed limiter device with an automatic return function according to the present invention;
FIG. 2 is a top view of the governor device with automatic return according to the present invention;
fig. 3 is a front view of the governor device with automatic return according to the present invention;
fig. 4 is a left side view (rotated 90 °) of the speed limiter device with automatic return function according to the present invention;
FIG. 5 is a schematic view of the trigger assembly of the present invention (including a governor mount);
FIG. 6 is a schematic view of the structure of the governor wheel, gear assembly, and first fastener of the present invention;
fig. 7 is a plan view of fig. 6 described above;
fig. 8 is a perspective view of the governor device with auto-return function according to the present invention (braking state—removal of governor mount);
fig. 9 is a front view of the governor device with automatic return function according to the present invention (braking state—removal of governor mount);
FIG. 10 is a top view of the governor device with auto-return feature of the present invention (braking condition-removal of governor mount);
FIG. 11 is a perspective view of a governor device with auto-return (return-removal of governor mount) according to the present invention;
fig. 12 is a front view of the governor device with automatic return function according to the present invention (return state—removal of governor mount);
fig. 13 is a top view of the governor device with automatic return according to the present invention (return-removal of governor mount).
Detailed Description
As shown in fig. 1 to 4, the speed limiter device with an automatic return function according to the present invention comprises a speed limiter mounting seat 1 and a speed limiter wheel 2, wherein a centrifugal weight 3, a first limiting member 4, a brake block 5 and a brake wheel 6 which are arranged in pairs are mounted on the speed limiter mounting seat 1, the brake block 5 and the brake wheel 6 are matched to realize braking, a first compression spring 20 is arranged at the bottom of the brake block 5, a first transmission gear 7 is hinged to one end of the brake block 5, a second transmission gear 8 is mounted on the speed limiter wheel 2 in a direction parallel to the axial direction of the speed limiter wheel, the first transmission gear 7 is a straight gear, a bevel 81 is arranged on the upper end surface of the second transmission gear 8, the second transmission gear 8 is meshed with the first transmission gear 7, a first fixing member 10 is arranged on the speed limiter wheel 2, a bevel button 11 capable of making line contact with the bevel 81 of the second transmission gear 8 is arranged on the first fixing member 10, a first compression button 11 is arranged on the speed limiter mounting seat 1 and is in contact with the bevel button 11, a second compression spring assembly is arranged on the second compression button 10, and the compression button is in a compression spring assembly is arranged on the second compression spring assembly 30, and is in a compression spring assembly 30 is in a compression state between the second compression button 10 and the second compression button assembly.
As shown in fig. 4 and 5, the trigger assembly 9 includes a second fixing member 91 fixed on the speed limiter mounting seat 1 and a trigger roller 92 mounted on the second fixing member 91, when the speed limiter wheel 2 rotates to the right within a circle, the trigger roller 92 rolls to touch the inclined plane button 11 and axially press the inclined plane button 11, and the inclined plane button 11 presses the second transmission gear 8 to drive the second transmission gear 8 to rotate. The speed limiter mounting seat 1 is a U-shaped frame body, and the second fixing piece 91 is correspondingly arranged on the top of the vertical end of the U-shaped frame body; the second fixing member 91 is a U-shaped supporting frame, and the touch roller 92 is threaded through the bottom transverse end of the U-shaped supporting frame.
As shown in fig. 1, 4 and 6, the speed limiter wheel 2 is further provided with a second limiting member 12, the second limiting member 12 is disposed corresponding to one end of the first transmission gear 7, and the inclined button 11 is a wedge block with an inclined upper end surface.
As shown in fig. 1, 4 and 6, the inclined surface portion 81 on the end surface of the second transmission gear 8 is a groove portion, the bottom surface of the groove portion is an inclined surface, and the groove portion and the first fixing member 10 are located at the same side of the gear shaft of the second transmission gear 8.
In the present invention, as shown in fig. 6 and 7, the first fixing member 10 is a similar U-shaped elastic support with two different vertical sides in cross section, the short vertical side of the U-shaped elastic support is fixedly mounted on the speed limiter wheel 2, the end of the long vertical side is fixedly mounted on the gear shaft of the second transmission gear 8, and the inclined button 11 is fixed at the end position of the outer surface of the long vertical side of the first fixing member 10.
The following specifically describes the operation of the braking state of the speed limiter according to the present invention (as shown in fig. 8 to 10) with reference to the accompanying drawings:
(1) Firstly, when the speed limiter normally operates, the speed limiter wheel 2 rotates left, and when the speed reaches a certain value, the centrifugal weight 3 can jack up the first limiting piece 4 due to the action of centrifugal force;
(2) Then, the first limiting piece 4 releases the brake block 5, the brake block 5 is released, the first compression spring 20 fixed at the bottom of the brake block 5 utilizes the action of the spring force to pull down the brake block 5, and at the moment, the brake block 5 and the brake wheel 6 are interlocked to be dead, and the speed limiter is braked;
(3) Then, the brake block 5 drives the first transmission gear 7 to move downwards, and under the limiting action of the second limiting piece 12, the first transmission gear 7 drives the second transmission gear 8 to rotate rightwards;
(4) Finally, the inclined surface pressing inclined surface button 11 of the second transmission gear 8 moves axially, and the first fixing member 10 and the second compression spring 30 function to fix the inclined surface button 11.
In the above-described braking state configuration, the first compression spring 20 is always in a stretched state, and the second compression spring 30 is always in a compressed state.
The following specifically describes the operation of the return state of the speed limiter according to the present invention (as shown in fig. 11 to 13) with reference to the accompanying drawings:
(1) Firstly, under a braking state, the speed limiter stops running, when an electric safety circuit is connected, the elevator moves upwards, the speed limiter wheel 2 rotates rightwards, when the speed limiter wheel 2 rotates rightwards, the touch roller 92 touches the inclined plane button 11 within a range within which the speed limiter wheel 2 rotates rightwards, and at the moment, the inclined plane button 11 moves downwards along the axial direction under the pressing of the touch roller 92;
(2) Then, the second transmission gear 8 is rotated leftward by the pressing of the bevel button 11;
(3) Then, under the rotation of the second transmission gear 8 and the limit of the second limiting piece 12, the first transmission gear 7 moves upwards;
(4) Finally, under the drive of the first transmission gear 7, the brake block 5 can tilt, and when the brake block 5 tilts to a certain extent, the first limiting piece 4 can lock the brake block 5, and at the moment, the speed limiter returns to a normal state.
The present invention is not limited to the above-described embodiments, and various modifications or variations of the present invention are intended to be included in the present invention, provided that they fall within the scope of the appended claims and the equivalents thereof, unless they depart from the spirit and scope of the present invention.
Claims (8)
1. The utility model provides a overspeed governor device with automatic function of replying, includes overspeed governor mount pad and overspeed governor wheel, install centrifugal weight, first locating part and brake shoe and the brake wheel that set up in pairs on the overspeed governor mount pad, brake shoe and the cooperation of brake wheel realize braking, the bottom of brake shoe is equipped with first compression spring, its characterized in that: a first transmission gear is hinged to one end of the brake block, a second transmission gear is arranged on the speed limiter wheel in the direction parallel to the axial direction of the speed limiter wheel, the first transmission gear is a straight gear, an inclined surface part is arranged on the upper end surface of the second transmission gear, the second transmission gear is meshed with the first transmission gear, a first fixing piece is arranged on the speed limiter wheel, an inclined surface button which can be in line contact with the inclined surface part of the second transmission gear is arranged on the first fixing piece, a touch assembly which can touch the inclined surface button and is used for touching the second transmission gear to rotate is arranged on the speed limiter mounting seat, a second compression spring is arranged between the bottom of the first fixing piece and the upper end surface of the second transmission gear, and the inclined surface button and the first fixing piece form a tensioning state through the second compression spring;
the touch assembly comprises a second fixing piece fixed on the speed limiter installation seat and a touch roller installed on the second fixing piece, when the speed limiter rotates rightwards within a circle, the touch roller touches the inclined plane button after rolling and presses the inclined plane button in the axial direction, and the inclined plane button presses the second transmission gear to drive the second transmission gear to rotate.
2. The speed limiter device with automatic return function according to claim 1, characterized in that: the second fixing piece is a U-shaped supporting frame, and the touch roller penetrates through the bottom transverse end of the U-shaped supporting frame.
3. The speed limiter device with automatic return function according to claim 2, characterized in that: the speed limiter mounting seat is a U-shaped frame body, and the second fixing piece is correspondingly arranged on the top of the vertical end of the U-shaped frame body.
4. The speed limiter device with automatic return function according to claim 1, characterized in that: and a second limiting part is further arranged on the speed limiter wheel and corresponds to one end part of the first transmission gear.
5. The speed limiter device with automatic return function according to claim 1, characterized in that: the inclined plane button is a wedge-shaped block with an upper end face being an inclined plane.
6. The speed limiter device with automatic return function according to claim 1, characterized in that: the inclined surface part on the end surface of the second transmission gear is a groove part, the bottom surface of the groove part is an inclined surface, and the groove part and the first fixing piece are positioned at the same side of the gear shaft of the second transmission gear.
7. The speed limiter device with automatic return function according to claim 1, characterized in that: the first fixing piece is a similar U-shaped elastic support with two different vertical sides in length, the short vertical sides of the U-shaped elastic support are fixedly arranged on the speed limiter wheel, the end parts of the long vertical sides of the U-shaped elastic support are fixedly arranged on the gear shafts of the second transmission gears, and the inclined plane buttons are fixed at the end parts of the outer surfaces of the long vertical sides of the first fixing piece.
8. The speed limiter device with automatic return function according to claim 1, characterized in that: the second compression spring is sleeved on the gear shaft of the second transmission gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811441898.0A CN109592531B (en) | 2018-11-29 | 2018-11-29 | Speed limiter device with automatic return function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811441898.0A CN109592531B (en) | 2018-11-29 | 2018-11-29 | Speed limiter device with automatic return function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109592531A CN109592531A (en) | 2019-04-09 |
| CN109592531B true CN109592531B (en) | 2023-09-01 |
Family
ID=65959099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811441898.0A Active CN109592531B (en) | 2018-11-29 | 2018-11-29 | Speed limiter device with automatic return function |
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| CN (1) | CN109592531B (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3327811A (en) * | 1966-10-28 | 1967-06-27 | Otis Elevator Co | Governor |
| US3902572A (en) * | 1973-11-28 | 1975-09-02 | Westinghouse Electric Corp | Elevator system |
| EP0662445A2 (en) * | 1994-01-05 | 1995-07-12 | Kone Oy | Apparatus in the overspeed governor of an elevator |
| JP2001082184A (en) * | 1999-09-14 | 2001-03-27 | Mikuni Corp | Accelerator device |
| KR100280723B1 (en) * | 1998-01-31 | 2001-04-02 | 신찬 | Limited differential bevel planetary gear |
| JP2002020056A (en) * | 2000-07-03 | 2002-01-23 | Toshiba Elevator Co Ltd | Speed governor for elevator |
| KR20070006538A (en) * | 2005-07-08 | 2007-01-11 | 다이나텍, 다이나믹스 앤드 테크놀러지, 에스. 엘. | Speed limiting system for lifting devices |
| CN2866297Y (en) * | 2006-01-11 | 2007-02-07 | 东莞贯新幼童用品有限公司 | Rotary mechanism positioning regulator |
| CN101780910A (en) * | 2009-01-15 | 2010-07-21 | 上海摩顿电气有限公司 | Machine-room-less speed limiter for elevator |
| CN102070056A (en) * | 2011-01-31 | 2011-05-25 | 沈阳博林特电梯股份有限公司 | Speed limiter with electromagnet and built-in photoelectric encoder |
| CN104787638A (en) * | 2015-03-31 | 2015-07-22 | 西继迅达（许昌）电梯有限公司 | Bi-directional speed limiter with pawl capable of being reset automatically |
| CN204549703U (en) * | 2015-03-31 | 2015-08-12 | 西继迅达（许昌）电梯有限公司 | There is the unidirectional automatic anti-running car speed-limiting protection system of ratchet auto-reset function |
| CN204569060U (en) * | 2015-03-18 | 2015-08-19 | 赫仲伟 | One automatically resets anti-falling safety device |
| CN205400993U (en) * | 2016-03-02 | 2016-07-27 | 山东交通学院 | Wind turbine generator system power sloping cam plate reinforcement formula arresting gear that asks for |
| CN106698139A (en) * | 2017-02-06 | 2017-05-24 | 南通通洋机电制造有限公司 | Elevator speed limiter |
| CN207175130U (en) * | 2017-08-31 | 2018-04-03 | 许昌宇德瑞达机电有限公司 | Self-resetting limiter of speed |
| CN209427907U (en) * | 2018-11-29 | 2019-09-24 | 广州广日电梯工业有限公司 | It is a kind of with the overspeed preventer device for automatically replying function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107673159B (en) * | 2016-08-01 | 2020-09-08 | 奥的斯电梯公司 | Speed limiter of elevator |
-
2018
- 2018-11-29 CN CN201811441898.0A patent/CN109592531B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3327811A (en) * | 1966-10-28 | 1967-06-27 | Otis Elevator Co | Governor |
| US3902572A (en) * | 1973-11-28 | 1975-09-02 | Westinghouse Electric Corp | Elevator system |
| EP0662445A2 (en) * | 1994-01-05 | 1995-07-12 | Kone Oy | Apparatus in the overspeed governor of an elevator |
| KR100280723B1 (en) * | 1998-01-31 | 2001-04-02 | 신찬 | Limited differential bevel planetary gear |
| JP2001082184A (en) * | 1999-09-14 | 2001-03-27 | Mikuni Corp | Accelerator device |
| JP2002020056A (en) * | 2000-07-03 | 2002-01-23 | Toshiba Elevator Co Ltd | Speed governor for elevator |
| KR20070006538A (en) * | 2005-07-08 | 2007-01-11 | 다이나텍, 다이나믹스 앤드 테크놀러지, 에스. 엘. | Speed limiting system for lifting devices |
| CN2866297Y (en) * | 2006-01-11 | 2007-02-07 | 东莞贯新幼童用品有限公司 | Rotary mechanism positioning regulator |
| CN101780910A (en) * | 2009-01-15 | 2010-07-21 | 上海摩顿电气有限公司 | Machine-room-less speed limiter for elevator |
| CN102070056A (en) * | 2011-01-31 | 2011-05-25 | 沈阳博林特电梯股份有限公司 | Speed limiter with electromagnet and built-in photoelectric encoder |
| CN204569060U (en) * | 2015-03-18 | 2015-08-19 | 赫仲伟 | One automatically resets anti-falling safety device |
| CN104787638A (en) * | 2015-03-31 | 2015-07-22 | 西继迅达（许昌）电梯有限公司 | Bi-directional speed limiter with pawl capable of being reset automatically |
| CN204549703U (en) * | 2015-03-31 | 2015-08-12 | 西继迅达（许昌）电梯有限公司 | There is the unidirectional automatic anti-running car speed-limiting protection system of ratchet auto-reset function |
| CN205400993U (en) * | 2016-03-02 | 2016-07-27 | 山东交通学院 | Wind turbine generator system power sloping cam plate reinforcement formula arresting gear that asks for |
| CN106698139A (en) * | 2017-02-06 | 2017-05-24 | 南通通洋机电制造有限公司 | Elevator speed limiter |
| CN207175130U (en) * | 2017-08-31 | 2018-04-03 | 许昌宇德瑞达机电有限公司 | Self-resetting limiter of speed |
| CN209427907U (en) * | 2018-11-29 | 2019-09-24 | 广州广日电梯工业有限公司 | It is a kind of with the overspeed preventer device for automatically replying function |
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| Publication number | Publication date |
|---|---|
| CN109592531A (en) | 2019-04-09 |
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