CN204897286U - Elevator arresting gear - Google Patents
Elevator arresting gear Download PDFInfo
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- CN204897286U CN204897286U CN201520683844.0U CN201520683844U CN204897286U CN 204897286 U CN204897286 U CN 204897286U CN 201520683844 U CN201520683844 U CN 201520683844U CN 204897286 U CN204897286 U CN 204897286U
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- elevator
- car
- braking
- electromagnet
- sensor
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- 238000005259 measurement Methods 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004599 local-density approximation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Cage And Drive Apparatuses For Elevators (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The utility model discloses an elevator arresting gear, including doppler's laser tacho sensor, two brake magnet, two first connecting rods and two safety tongss, wherein, two brake magnet fix respectively on boots are led on two upper portions of car, and the sensor generator of laser doppler velocity measurement sensor is fixed on the crossbeam at elevartor shaft top, and the sensor receiver is fixed on the crossbeam on elevator car upper portion, and the laser doppler velocity measurement sensor is used for controlling the guide rail that two brake magnet absorption correspond, two first connecting rod settings are in the car both sides, and the upper portion of every first connecting rod articulates on a brake magnet, and the lower part articulates on the movable voussoir that corresponds a safety tongs. The utility model discloses can accurately monitor out elevator car's speed change and timely brakeing the car to reach the mesh that makes elevator braking in time under the state of emergency protect personnel's safety.
Description
The technical field is as follows:
the utility model belongs to the technical field of the elevator, especially, relate to an elevator arresting gear.
Background art:
at present, passenger elevators have been widely used in urban high-rise buildings, wherein an elevator safety device elevator speed limiter-safety gear linkage is an indispensable part of an elevator protection device, and the elevator safety device elevator speed limiter-safety gear linkage determines whether to act to brake an elevator by monitoring whether the speed of a car exceeds a set value, when the speed of the car exceeds 115% of the rated speed of the elevator, a speed limiter speed limiting wheel stops rotating, a rope clamping device clamps a speed limiter wheel rope, and when the car further descends, the wheel rope pulls a connecting rod mechanism connected to the safety gear to act the safety gear, so that the purpose of braking is achieved. However, the prior elevator speed limiter-safety gear linkage device has the following defects:
1. the speed measurement is inaccurate. On one hand, the speed of the elevator car is detected by driving a speed limiting wheel to rotate through a speed limiting wheel rope, when the speed of the elevator reaches 115% of the rated speed of the elevator, the speed limiting wheel acts, and the speed measurement is not accurate because the mechanism is driven by machinery and the action condition of the speed limiting wheel is in a certain range; on the other hand, when the surface of the speed limiting wheel rope contains oil stains or the speed limiting wheel is abraded, the tension of the speed limiting wheel rope is insufficient, the speed limiting wheel rope slips on the speed limiting wheel, the speed of the car cannot be accurately reflected to the rotation of the speed limiting wheel, and when the speed reaches a preset value, the speed limiter cannot effectively act;
2. the traction force of the speed limiting wheel rope is insufficient. When the speed-limiting wheel groove and the rope clamping device are abraded or the surface of the speed-limiting wheel rope contains oil stains, the clamping force of the rope clamping device is insufficient, the speed-limiting wheel rope slides on the speed limiting wheel, when the speed of the lift car reaches the upper limit value, the rope clamping device cannot enable the speed-limiting wheel rope to stop moving immediately, and at the moment, the traction force of the speed-limiting wheel rope cannot enable the safety tongs to act effectively.
The utility model has the following contents:
the utility model aims at overcoming the not enough of current elevator overspeed governor-safety tongs aggregate unit, providing an elevator arresting gear.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
an elevator braking device comprises a Doppler laser speed measurement sensor, two braking electromagnets, two first connecting rods and two safety tongs; wherein,
the top of an elevator shaft and the upper part of an elevator car of the elevator are respectively provided with a cross beam, two guide rails are symmetrically arranged between the elevator car and the elevator shaft, the upper part and the lower part of the elevator car are respectively provided with an upper guide shoe and a lower guide shoe which are matched with the two guide rails for guiding, and two safety tongs are respectively arranged between a lower beam at the bottom of the elevator car and the two lower guide shoes and are used for respectively clamping the two guide rails to brake the elevator;
the two brake electromagnets are respectively fixed on two upper guide shoes of the lift car, a sensor generator of a laser Doppler velocity measurement sensor is fixed on a cross beam at the top of the lift shaft, a sensor receiver is fixed on the cross beam at the upper part of the lift car, and the laser Doppler velocity measurement sensor is used for controlling the two brake electromagnets to adsorb corresponding guide rails;
the two first connecting rods are arranged on two sides of the lift car, the upper part of each first connecting rod is hinged to one braking electromagnet, and the lower part of each first connecting rod is hinged to a movable wedge block corresponding to one safety gear.
The utility model discloses a further improvement lies in, connects through a link mechanism hinge between two first links.
The utility model discloses a further improvement lies in that link mechanism includes two second connecting rods and a third connecting rod, and wherein, the both ends of third connecting rod are connected with the one end hinge of two second connecting rods respectively, and the other end of two second connecting rods is connected with the middle hinge of two first connecting rods respectively.
The utility model discloses further improvement lies in, the crossbeam bottom both sides on elevator car upper portion still symmetry are provided with two stiffening rib boards, and the centre of two second connecting rods is connected with the stiffening rib board hinge that corresponds respectively.
The utility model discloses a further improvement lies in, every braking electromagnet all includes two electromagnet support, and an end hinge of two electromagnet support is connected, and its other end is provided with first electro-magnet and second electro-magnet respectively.
The utility model discloses a further improvement lies in, and two electro-magnet support's inboard is connected through compression spring.
The utility model discloses further improvement lies in, and the pinhole has been seted up in the hinge department of two electro-magnet supports, and every braking electromagnet all fixes on two upper portions of car lead boots through the first stud that passes the pinhole, and every braking electromagnet homoenergetic is at the axial displacement on the first stud that corresponds.
The utility model discloses a further improvement lies in, all is provided with nut and two gaskets on every first stud, and the cover is equipped with the spring on the first stud between two gaskets for control brake electromagnet is axial displacement on first stud.
The utility model discloses further improvement lies in, this elevartor shaft top beam center department is provided with the hauler for promote elevator car through wire rope.
Compared with the prior art, the utility model has the advantages of as follows:
the utility model discloses be equipped with the speed measuring system, it adopts laser Doppler tachometer sensor, can directly measure the moving speed of car, when car speed reached the 115% of rated speed of elevator, laser Doppler tachometer sensor signals and gives control system, control system reacts, start braking electromagnet, make it tightly adsorb on the elevator track, when the car further descends, the electro-magnet will take up the connecting rod, the connecting rod pulls the movable voussoir on the safety tongs, make and produce great clamp force between movable voussoir and the track, finally make the elevator braking. The utility model discloses can accurately monitor out elevator car's speed variation and timely brake the car to reach and make the elevator in time brake the purpose that comes the protection personal safety under emergency.
Particularly, the utility model has the following several advantages:
1. the speed measurement precision is high. The laser doppler velocity measurement principle is the laser doppler effect, when the light source and the moving object move relatively, the light scattered from the moving object will generate doppler shift, and the magnitude of the shift is related to the speed of the object, the included angle between the incident light and the speed direction. The sensor adopts non-contact measurement, can directly measure the linear speed of the lift car without conversion of a mechanical device, and has higher measurement precision.
2. The braking time is rapid. When the speed of the lift car exceeds 115% of the rated speed of the lift, the sensor monitors that the speed exceeds the standard, then the electromagnet is started through a control link, the electromagnet is immediately sucked, and the connecting rod is pulled to enable the safety gear to act.
3. The reliability is high. The utility model discloses a two braking electromagnets tightly adsorb on the track, just can reach the suction size of wanting through changing electric current size, coil number of turns and iron core polarized area. The traction force of the brake electromagnet on the connecting rods at the two sides is greatly improved, so that the safety tongs can effectively act, and the safety tongs are safe and reliable.
Description of the drawings:
fig. 1 is an overall structure diagram of the present invention.
Fig. 2 is a view of the brake electromagnet from direction a.
In the figure: 1-a traction machine; 2-steel wire rope; 3-third connecting rod; 4-a first stud; 5, a gasket; 6-a spring; 7-brake electromagnet; 8-reinforcing rib plate; 9-a guide rail; 10-a first bolt; 11-safety tongs; 12-a lower guide shoe; 13-a second bolt; 14 — a first connecting pin; 15-car bottom lower beam; 16-a car; 17-a first link; 18-a second connecting pin; 19-a third connecting pin; 20-a second link; 21-a fourth connecting pin; 22 — upper guide shoe; 23-a fifth connecting pin; 24-a sensor receiver; 25 — a second stud; 26-a sensor generator; 27-third bolt; 7-1 — a first electromagnet; 7-2 — a second electromagnet; 7-3-electromagnet support; 7-4-pin hole; 7-5-compression spring.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the following drawings and examples.
As shown in fig. 1, the utility model relates to an elevator braking device, including doppler laser tacho sensor, braking electromagnet 7, link mechanism, safety tongs 11.
The top of an elevator shaft and the upper part of an elevator car of the elevator are respectively provided with a cross beam, two guide rails 9 are symmetrically arranged between the elevator car and the elevator shaft, the upper part and the lower part of the elevator car are respectively provided with an upper guide shoe 22 and a lower guide shoe 12 which are matched and guided with the two guide rails 9, two safety tongs 11 are respectively arranged between a lower beam 15 at the bottom of the elevator car and the two lower guide shoes 12 and are used for respectively clamping the two guide rails 9 to brake the elevator, and the two safety tongs 11 are connected with the corresponding lower guide shoes 12 through second bolts 13; the sensor generator 26 of the laser doppler velocimetry sensor is fixed on the beam at the top of the elevator shaft by a third bolt 27, and the sensor receiver 24 is fixed on the beam at the upper part of the elevator car 16 by a second stud 25. Two brake electromagnets 7 are respectively fixed on upper guide shoes 22 of a car 16 through first stud bolts 4, specifically, each brake electromagnet 7 comprises two electromagnet supports 7-3, one ends of the two electromagnet supports 7-3 are hinged, the other ends of the two electromagnet supports are respectively provided with a first electromagnet 7-1 and a second electromagnet 7-2, the inner sides of the two electromagnet supports 7-3 are connected through compression springs 7-5, pin holes 7-4 are formed in the hinged positions of the two electromagnet supports 7-3, each brake electromagnet 7 is fixed on the two upper guide shoes 22 of the car 16 through the first stud bolts 4 penetrating through the pin holes 7-4, and each brake electromagnet 7 can axially move on the corresponding first stud bolts 4.
Two first links 17 are located on each side of the car 16, the upper part of each first link 17 is hinged to the braking electromagnet 7 by a fifth connecting pin 23, and the lower part of each first link 17 is hinged to the movable wedge of the safety gear 11 by a first connecting pin 14. The two first connecting rods 17 are hinged through a connecting rod mechanism, wherein the connecting rod mechanism comprises two second connecting rods 20 and a third connecting rod 3, two ends of the third connecting rod 3 are respectively hinged with one ends of the two second connecting rods 20, and the other ends of the two second connecting rods 20 are respectively hinged with the middle of the two first connecting rods 17. In addition, two reinforcing rib plates 8 are symmetrically arranged on two sides of the bottom of the cross beam on the upper part of the elevator car, and the middles of the two second connecting rods 20 are respectively hinged with the corresponding reinforcing rib plates 8.
In this embodiment, there are two braking electromagnets 7 symmetrically installed on the upper part of the guide shoe on the upper part of the elevator car, and the parameters of the two braking electromagnets are the same, which is beneficial to increasing the traction force of the braking electromagnets 7.
In this embodiment, there are two first connecting rods 17, which are symmetrically installed on both sides of the elevator, and the two first connecting rods are connected by a connecting rod mechanism, so that the two connecting rod mechanisms can function simultaneously.
In this embodiment, there are two safety tongs 11, and the two safety tongs are symmetrically installed at the bottom of the car by bolts.
The utility model discloses a theory of operation is: in fig. 1, the hoist 1 pulls the wire rope 2 to move the car 16 up and down, and when the wire rope 2 is broken due to long-term wear or in an overweight state, the car 16 is suddenly lowered without being subjected to traction force of the wire rope 2. At this time, the sensor receiver 24 fixed to the upper beam of the elevator car 16 by the second stud 25 receives the laser beam from the sensor generator 26 fixed to the beam at the top of the elevator shaft by the second stud 25, and measures the linear velocity of the elevator car 16. When the descending speed of the elevator car 16 reaches 115% of the rated speed of the elevator, the sensor receiver 24 sends the received Doppler signal to a photomultiplier tube to be converted into an electric signal, processed and amplified, and the brake electromagnet 7 fixed on the upper guide shoe 22 of the elevator car by the first stud 4 for driving is tightly adsorbed on the guide rail 9 of the elevator. The upper part of the first link 17 is hinged to the braking electromagnet 7 by means of a fifth connecting pin 23, and the lower part of the first link 17 is hinged to the movable wedge of the safety gear 11 by means of the first connecting pin 14.
The middle part of the first connecting rod 17 is hinged with a second connecting pin 18 and a second connecting rod 20, the second connecting rod 20 is hinged with the reinforcing rib plate 8 and the third connecting rod 3 through a fourth connecting pin 21 and the second connecting pin 18, and as the lift car 16 further descends, the brake electromagnet 7 pulls the first connecting rod 17 to tighten a movable wedge block of the safety gear 11 fixed on a lower beam 15 at the bottom of the lift car through the first bolt 10, so that a large clamping force is generated between the movable wedge block and the lift guide rail 9, and finally the lift is braked, and the purpose of braking is achieved.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (9)
1. An elevator braking device is characterized by comprising a Doppler laser speed measurement sensor, two braking electromagnets (7), two first connecting rods (17) and two safety tongs (11); wherein,
the top of an elevator shaft and the upper part of an elevator car of the elevator are respectively provided with a cross beam, two guide rails (9) are symmetrically arranged between the elevator car and the elevator shaft, the upper part and the lower part of the elevator car are respectively provided with an upper guide shoe (22) and a lower guide shoe (12) which are matched with the two guide rails (9) for guiding, and two safety tongs (11) are respectively arranged between a lower beam (15) at the bottom of the elevator car and the two lower guide shoes (12) and used for respectively clamping the two guide rails (9) to brake the elevator;
the two braking electromagnets (7) are respectively fixed on two upper guide shoes (22) of the lift car (16), a sensor generator (26) of a laser Doppler velocity measurement sensor is fixed on a cross beam at the top of the lift shaft, a sensor receiver (24) is fixed on the cross beam at the upper part of the lift car, and the laser Doppler velocity measurement sensor is used for controlling the two braking electromagnets (7) to adsorb corresponding guide rails (9);
two first connecting rods (17) are arranged at two sides of the lift car (16), the upper part of each first connecting rod (17) is hinged on one braking electromagnet (7), and the lower part is hinged on a movable wedge block corresponding to one safety gear (11).
2. Elevator braking apparatus according to claim 1, characterized in that the two first links (17) are hingedly connected by a link mechanism.
3. An elevator braking apparatus according to claim 2, characterized in that the link mechanism comprises two second links (20) and a third link (3), wherein both ends of the third link (3) are hingedly connected to one ends of the two second links (20), respectively, and the other ends of the two second links (20) are hingedly connected to the middle of the two first links (17), respectively.
4. An elevator braking device as defined in claim 3, characterized in that two reinforcing ribs (8) are symmetrically arranged on both sides of the bottom of the upper beam of the elevator car, and the middle of each of the two second connecting rods (20) is hinged to the corresponding reinforcing rib (8).
5. Elevator braking device according to claim 1, characterized in that each braking electromagnet (7) comprises two electromagnet supports (7-3), one end of which (7-3) is hinged and the other end of which is provided with a first electromagnet (7-1) and a second electromagnet (7-2), respectively.
6. Elevator braking device according to claim 5, characterized in that the insides of the two electromagnet supports (7-3) are connected by means of compression springs (7-5).
7. Elevator braking apparatus according to claim 5, characterized in that the hinge of the two electromagnet supports (7-3) is provided with a pin hole (7-4), each braking electromagnet (7) is fixed to two upper guide shoes (22) of the car (16) by means of a first stud (4) passing through the pin hole (7-4), and each braking electromagnet (7) is axially movable on the corresponding first stud (4).
8. Elevator braking device according to claim 7, characterized in that each first stud (4) is provided with a nut and two washers (5), and the first stud (4) between the two washers (5) is fitted with a spring (6) for controlling the axial movement of the braking electromagnet (7) on the first stud (4).
9. Elevator braking apparatus according to claim 1, characterized in that the hoisting machine (1) is arranged in the center of the top cross beam of the elevator shaft for hoisting the elevator car (16) by means of a wire rope (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520683844.0U CN204897286U (en) | 2015-09-06 | 2015-09-06 | Elevator arresting gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520683844.0U CN204897286U (en) | 2015-09-06 | 2015-09-06 | Elevator arresting gear |
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| Publication Number | Publication Date |
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| CN204897286U true CN204897286U (en) | 2015-12-23 |
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| CN201520683844.0U Expired - Fee Related CN204897286U (en) | 2015-09-06 | 2015-09-06 | Elevator arresting gear |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106115410A (en) * | 2016-08-31 | 2016-11-16 | 西南交通大学 | A kind of elevator safety safeguards system based on magnetic rail brake device and control method |
| CN106698137A (en) * | 2017-01-10 | 2017-05-24 | 成都辟思航空科技有限公司 | Permanent magnetic anti-falling device used on steel guide rail |
| CN107792747A (en) * | 2016-08-30 | 2018-03-13 | 奥的斯电梯公司 | The stabilising arrangement of elevator car |
| CN110361208A (en) * | 2018-03-26 | 2019-10-22 | 上海三菱电梯有限公司 | The test method and device for the method for lift car emergency braking apparatus |
| CN110817645A (en) * | 2019-10-25 | 2020-02-21 | 湖南大举信息科技有限公司 | Elevator brake system |
| CN114455423A (en) * | 2022-03-24 | 2022-05-10 | 常熟理工学院 | Elevator safety tongs-speed limiter linkage device |
| CN114751278A (en) * | 2021-01-12 | 2022-07-15 | 山东富士制御电梯有限公司 | Self-detection automatic operation elevator safety protection device |
-
2015
- 2015-09-06 CN CN201520683844.0U patent/CN204897286U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107792747A (en) * | 2016-08-30 | 2018-03-13 | 奥的斯电梯公司 | The stabilising arrangement of elevator car |
| CN106115410A (en) * | 2016-08-31 | 2016-11-16 | 西南交通大学 | A kind of elevator safety safeguards system based on magnetic rail brake device and control method |
| CN106698137A (en) * | 2017-01-10 | 2017-05-24 | 成都辟思航空科技有限公司 | Permanent magnetic anti-falling device used on steel guide rail |
| CN106698137B (en) * | 2017-01-10 | 2023-06-06 | 成都辟思航空科技有限公司 | Permanent magnet anti-falling device for steel guide rail |
| CN110361208A (en) * | 2018-03-26 | 2019-10-22 | 上海三菱电梯有限公司 | The test method and device for the method for lift car emergency braking apparatus |
| CN110817645A (en) * | 2019-10-25 | 2020-02-21 | 湖南大举信息科技有限公司 | Elevator brake system |
| CN114751278A (en) * | 2021-01-12 | 2022-07-15 | 山东富士制御电梯有限公司 | Self-detection automatic operation elevator safety protection device |
| CN114455423A (en) * | 2022-03-24 | 2022-05-10 | 常熟理工学院 | Elevator safety tongs-speed limiter linkage device |
| CN114455423B (en) * | 2022-03-24 | 2022-11-25 | 常熟理工学院 | Elevator safety tongs-overspeed governor aggregate unit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20160906 |
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| CF01 | Termination of patent right due to non-payment of annual fee |