CN115072518A - Cordless speed-limiting safety tongs - Google Patents
Cordless speed-limiting safety tongs Download PDFInfo
- Publication number
- CN115072518A CN115072518A CN202210686011.4A CN202210686011A CN115072518A CN 115072518 A CN115072518 A CN 115072518A CN 202210686011 A CN202210686011 A CN 202210686011A CN 115072518 A CN115072518 A CN 115072518A
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- Prior art keywords
- speed
- safety gear
- centrifugal
- limiting
- cordless
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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
-
- 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
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
- B66B5/22—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of linearly-movable wedges
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The invention discloses a ropeless speed-limiting safety gear in the technical field of safety gears, which is integrally arranged on an elevator car and moves along with the elevator car, and comprises a safety gear component and a centrifugal mechanism, wherein the safety gear component comprises an outer safety gear seat, the safety gear component is arranged in the outer safety gear seat and slides on a guide rail, the centrifugal mechanism comprises a flywheel shell, and a centrifugal component is arranged in the flywheel shell. Through setting up centrifugal mechanism and can carry out synchronous movement through friction roller and elevator car, with the moving speed of elevator car in synchronous to centrifugal subassembly, when elevator car speed surpassed the default, centrifugal subassembly can pin the flywheel casing for the flywheel casing drives the safety tongs subassembly through the lifting rod and carries out the operation of braking speed limit.
Description
Technical Field
The invention relates to the technical field of safety tongs, in particular to a cordless speed-limiting safety tong.
Background
The traditional speed limiter is arranged in a machine room at the top layer of an elevator shaft, and a safety gear of the elevator is another independent braking device and is arranged at the bottom of a car.
Generally, a steel wire rope suspended in a rope pulley groove of a speed limiter is connected with a safety gear link mechanism at the bottom of a car, extends to the bottom of a shaft, bypasses a tension pulley installed in a pit and returns to the rope pulley groove of the speed limiter at the top layer of an elevator shaft to form a circulating connection.
When the cage runs beyond the rated speed, the rotating speed of the rope wheel on the speed limiter is accelerated and exceeds the set rotating speed, the centrifugal block on the rope wheel is used for opening the spring fastener under the action of centrifugal force, so that the steel wire rope wedge block locks the steel wire rope, and the cage still runs at an overspeed, so that the cage and the steel wire rope generate a relative motion, the locking mechanism of the safety tongs is poked by the force of the relative motion, the wedge block in the safety tongs is wedged into or the eccentric center of the eccentric wheel clamps the elevator track, and the elevator is prevented from running at an overspeed.
The maintenance of the steel wire rope of the rope type safety tongs is originally higher in cost, and the mechanism also has certain mechanical fault factors due to the structural complexity.
Disclosure of Invention
The invention aims to provide a cordless speed-limiting safety gear to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the speed-limiting safety gear is integrally arranged on an elevator car and moves along with the elevator car, the speed-limiting safety gear comprises a safety gear component and a centrifugal mechanism, the safety gear component comprises an outer safety gear seat, the safety gear component is arranged in the outer safety gear seat and slides on a guide rail, a base is arranged above the outer safety gear seat, the centrifugal mechanism is arranged on the base and comprises a flywheel shell, a centrifugal component is arranged in the flywheel shell, when the integral speed of the elevator car exceeds a preset value, the centrifugal component is involved and rotates with the flywheel shell simultaneously, the flywheel shell and a lifting rod hinged to the outside pull the safety gear component to clamp the guide rail for limiting speed, the flywheel shell is connected with a friction roller through a synchronous belt, and the friction roller rolls on the guide rail in real time, the speed of movement of the elevator car is transferred to the centrifugal assembly.
Preferably, the safety gear subassembly includes restriction piece and retarder, the restriction piece articulates on the safety gear outer support, and the symmetry sets up two, two the inside of restriction piece sets up two retarder, the retarder is articulated and can carry out the installation of one section translation in the terminal keyway of lifting rod, the retarder wholly is wedge shape, and its inclined plane end contacts with the restriction piece, and the restriction piece sets up the both sides at the guide rail, when sliding on the restriction piece, can move to the inboard and embrace the clamp speed limit to the guide rail.
Preferably, an adjusting bolt is installed on the outer thread of the outer support of the safety gear, and the adjusting bolt can adjust the spacing distance between the two limiting blocks, so that the sensitivity of the guide rail clamped by the speed reducer piece is adjusted.
Preferably, the centre of a circle department of flywheel casing passes through the bearing housing and connects the support arm, the terminal installation friction gyro wheel of support arm, the one end coaxial coupling drive pulley of friction gyro wheel is first, the one end coaxial coupling drive pulley of centrifugal subassembly is second, the hold-in range is established with the cover on the drive pulley is second and synchronous drive is carried out.
Preferably, the centrifugal assembly comprises a rotary disc arranged inside the flywheel shell, the rotary disc is coaxially connected with the driving belt wheel II, the upper part and the lower part of the rotary disc are respectively hinged with two pawls through a fixed shaft, ratchets are arranged on the inner side of the outer circle of the flywheel shell, when a large centrifugal rotating speed occurs to the rotary disc, the outer ends of the pawls rotate outwards and deviate to the ratchets to be locked, and the rotary disc drives the flywheel shell to rotate together.
Preferably, the two pawls are movably connected through a connecting rod, so that the two pawls can synchronously rotate.
Preferably, a reset assembly is arranged on the pawl on one side and comprises a connecting piece and a spring, the connecting piece is hinged to the pawl and is connected to a support block fixedly arranged on the rotary table in an inserting mode, the spring is sleeved on the connecting piece, one end of the spring is supported on the support block, and the other end of the spring is elastically supported on the connecting piece, so that the pawl has elastic force far away from the ratchet.
Preferably, the base is elastically connected with the supporting arm through a pressure spring, so that the friction roller keeps pressure on the guide rail.
Preferably, two reset tension springs are arranged between the flywheel housing and the base and used for keeping the initial position of the flywheel housing.
Compared with the prior art, the invention has the beneficial effects that: the invention relates to a cordless speed-limiting safety tongs, which has lower maintenance cost and lower interference factor.
Through setting up centrifugal mechanism and can carry out synchronous movement through friction roller and elevator car, with the moving speed of elevator car in synchronous to centrifugal subassembly, when elevator car speed surpassed the default, centrifugal subassembly can pin the flywheel casing for the flywheel casing drives the safety tongs subassembly through the lifting rod and carries out the speed limit operation of braking, and whole operation does not need the access of external circuit, has reduced the possibility that mechanical failure takes place, has guaranteed the safety in utilization of elevator.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic front side view of the present invention;
FIG. 2 is a schematic rear side view of the present invention;
FIG. 3 is a schematic view of the back side of the centrifugal mechanism and safety gear assembly of the present invention,
FIG. 4 is a front side view of the centrifugal mechanism and safety gear assembly of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-guide rail, 2-safety gear outer seat, 3-base, 4-flywheel shell, 5-bearing sleeve, 6-support arm, 7-pressure spring, 8-friction roller, 9-driving pulley I, 10-driving pulley II, 11-synchronous belt, 12-lifting rod, 13-reset tension spring, 14-limiting block, 15-adjusting bolt, 16-speed reducing piece, 17-ratchet, 18-pawl, 19-fixed shaft, 20-connecting piece, 21-spring, 22-rotary table and 23-connecting rod.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a ropeless formula speed limit safety gear, its integral erection is on elevator car, follows the car and removes, and the speed limit safety gear includes safety gear subassembly and centrifugal mechanism, the safety gear subassembly includes safety gear outer support 2, the safety gear subassembly is installed inside safety gear outer support 2, the safety gear subassembly slides on guide rail 1.
As one example thereof: the safety gear outer support 2's top sets up base 3, centrifugal mechanism installs on base 3, centrifugal mechanism includes flywheel casing 4, the inside centrifugal subassembly that is provided with of flywheel casing 4, when elevator car overall speed exceeded the default, centrifugal subassembly intervened and rotated simultaneously with flywheel casing 4, and flywheel casing 4 and outside articulated lifting rod 12 pulling safety tongs subassembly can embrace the clamp speed limit to guide rail 1, flywheel casing 4 passes through hold-in range 11 and connects friction roller 8, friction roller 8 rolls on guide rail 1 in real time, transmits elevator car's removal speed to centrifugal subassembly in.
The center of a circle of the flywheel housing 4 is connected with the supporting arm 6 through the bearing sleeve 5, the friction roller 8 is installed at the tail end of the supporting arm 6, one end of the friction roller 8 is coaxially connected with the first driving belt wheel 9, one end of the centrifugal assembly is coaxially connected with the second driving belt wheel 10, and the first driving belt wheel 9 and the second driving belt wheel 10 are sleeved with the synchronous belt 11 to be synchronously driven.
The friction roller 8 rolls on one side of the guide rail 1, and the base 3 is elastically connected with the supporting arm 6 through the pressure spring 7, so that the friction roller 8 keeps pressure on the guide rail 1.
The centrifugal assembly comprises a rotary disc 22 arranged inside the flywheel housing 4, the rotary disc 22 is coaxially connected with the driving belt wheel II 10, the upper part and the lower part of the rotary disc 22 are respectively hinged with two pawls 18 through a fixed shaft 19, ratchets 17 are arranged on the inner side of the excircle of the flywheel housing 4, when a large centrifugal rotating speed occurs to the rotary disc 22, the outer ends of the pawls 18 rotate outwards and deviate to the ratchets 17 to be locked, and at the moment, the rotary disc 22 drives the flywheel housing 4 to rotate together.
In order to ensure that the pawl 18 is kept away from the ratchet 17 under normal working conditions, a reset assembly is arranged on the pawl 18 on one side, the reset assembly comprises a connecting piece 20 and a spring 21, the connecting piece 20 is hinged on the pawl 18, the connecting piece 20 is inserted and connected onto a support block fixedly arranged on a rotary disc 22, the spring 21 is sleeved on the connecting piece 20, one end of the spring 21 is supported on the support block, and the other end of the spring 21 is elastically supported on the connecting piece 20, so that the pawl 18 has elastic force away from the ratchet 17; two reset tension springs 13 are arranged between the flywheel housing 4 and the base 3 and used for keeping the initial position of the flywheel housing 4.
When the moving speed of the elevator car exceeds the preset speed of the centrifugal component, the centrifugal force at one side of the pawl 18 overcomes the elastic force of the spring 21 and rotates towards the outer end, and the two pawls 18 are movably connected through the connecting rod 23, so that the two pawls 18 can synchronously rotate; when the two pawls 18 move to the position of the ratchet 17, the ratchet 17 and the pawls 18 are locked, at this time, the rotary disc 22 and the flywheel housing 4 rotate synchronously, after the flywheel housing 4 rotates, the lifting rod 12 is driven to pull up,
as another example thereof: the safety gear assembly comprises a limiting block 14 and a decelerating sheet 16, the limiting block 14 is hinged to the safety gear outer base 2, the two decelerating sheets 16 are symmetrically arranged on the limiting block 14, the decelerating sheet 16 is hinged to the limiting block and can be installed in a key groove at the tail end of the lifting rod 12 in a one-section translation mode, the decelerating sheet 16 is integrally wedge-shaped, the inclined plane end of the decelerating sheet is in contact with the limiting block 14, the limiting blocks 14 are arranged on two sides of the guide rail 1, and when the limiting block 14 slides, the decelerating sheet can move inwards to clamp the guide rail 1 to limit the speed.
An adjusting bolt 15 is installed on the outer thread of the safety gear outer base 2, the adjusting bolt 15 can adjust the spacing distance between the two limiting blocks 14, and then the sensitivity of the guide rail 1 clamped by the speed reducing piece 16 is adjusted.
When the guide rail locking device is used, after the guide rail locking device is pulled by one side of the lifting rod 12, the two deceleration sheets 16 move upwards, and wedge-shaped surfaces on two sides of the two deceleration sheets 16 slide on the limiting blocks 14 and move inwards at the same time until the deceleration sheets 16 lock the guide rail 1 in a locking mode.
The invention is a cordless speed-limiting safety gear, which has lower maintenance cost and lower interference factors; the possibility of mechanical failure is reduced, and the use safety of the elevator is ensured.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1. The utility model provides a cordless speed limit safety tongs, its integral erection is on elevator car, follows the car and removes its characterized in that: the speed-limiting safety gear comprises a safety gear component and a centrifugal mechanism, the safety gear component comprises a safety gear outer base (2), the safety gear component is installed inside the safety gear outer base (2), the safety gear component slides on a guide rail (1), a base (3) is arranged above the safety gear outer base (2), the centrifugal mechanism is installed on the base (3), the centrifugal mechanism comprises a flywheel shell (4), a centrifugal component is arranged inside the flywheel shell (4), when the integral speed of an elevator car exceeds a preset value, the centrifugal component is involved and rotates with the flywheel shell (4) at the same time, the flywheel shell (4) pulls the safety gear component with a pull rod (12) hinged with the outside, the speed limiting can be carried out on the guide rail (1), and the flywheel shell (4) is connected with a friction roller (8) through a synchronous belt (11), the friction roller (8) rolls on the guide rail (1) in real time, and the moving speed of the elevator car is transmitted to the centrifugal assembly.
2. The cordless speed-limiting safety tongs according to claim 1, characterized in that: the safety gear assembly comprises limiting blocks (14) and speed reduction pieces (16), the limiting blocks (14) are hinged to the outer safety gear base (2), two speed reduction pieces (16) are symmetrically arranged and arranged in the limiting blocks (14), the speed reduction pieces (16) are hinged and can be installed in key grooves in the tail ends of the lifting and pulling rods (12) in a section of translation, the speed reduction pieces (16) are integrally wedge-shaped, the inclined plane ends of the speed reduction pieces are in contact with the limiting blocks (14), the limiting blocks (14) are arranged on two sides of the guide rail (1), and when the limiting blocks (14) slide, the speed reduction pieces can move inwards to clamp the guide rail (1) in an embracing mode.
3. The cordless speed-limiting safety gear according to claim 2, characterized in that: adjusting bolts (15) are installed on the outer threads of the safety gear outer base (2), the adjusting bolts (15) can adjust the spacing distance between the two limiting blocks (14), and then the sensitivity of the guide rail (1) clamped by the speed reduction piece (16) is adjusted.
4. The cordless speed-limiting safety tongs according to claim 1, characterized in that: the centre of a circle department of flywheel casing (4) passes through bearing housing (5) connection support arm (6), the terminal installation friction gyro wheel (8) of support arm (6), the one end coaxial coupling driving pulley (9) of friction gyro wheel (8), centrifugal component's one end coaxial coupling driving pulley two (10), synchronous belt (11) are established to the cover on driving pulley one (9) and driving pulley two (10) and carry out synchronous drive.
5. The cordless speed-limiting safety gear according to claim 4, wherein: the centrifugal assembly comprises a rotary disc (22) arranged inside the flywheel housing (4), the rotary disc (22) is coaxially connected with the driving belt wheel II (10), the upper portion and the lower portion of the rotary disc (22) are hinged to two pawls (18) through fixing shafts (19), ratchets (17) are arranged on the inner side of the outer circle of the flywheel housing (4), when the rotary disc (22) rotates at a large centrifugal rotating speed, the outer ends of the pawls (18) rotate outwards, the ratchets (17) deviate to be locked, and the rotary disc (22) drives the flywheel housing (4) to rotate together.
6. The cordless speed-limiting safety gear according to claim 5, wherein: the two pawls (18) are movably connected through a connecting rod (23), so that the two pawls (18) can synchronously rotate.
7. The cordless speed-limiting safety gear according to claim 6, wherein: one side set up the subassembly that resets on pawl (18), the subassembly that resets includes connecting piece (20) and spring (21) that articulate on pawl (18), connecting piece (20) are pegged graft on setting firmly the piece that props on carousel (22), spring (21) cover is established on connecting piece (20), and one end of spring (21) supports on a piece, and the other end supports connecting piece (20) elastic support for pawl (18) have the elasticity of keeping away from ratchet (17).
8. The cordless speed-limiting safety tongs according to claim 5, characterized in that: the base (3) is elastically connected with the supporting arm (6) through a pressure spring (7), so that the friction roller (8) keeps pressure on the guide rail (1).
9. The cordless speed-limiting safety gear according to claim 5, wherein: two reset tension springs (13) are arranged between the flywheel housing (4) and the base (3) and used for keeping the initial position of the flywheel housing (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210686011.4A CN115072518A (en) | 2022-06-16 | 2022-06-16 | Cordless speed-limiting safety tongs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210686011.4A CN115072518A (en) | 2022-06-16 | 2022-06-16 | Cordless speed-limiting safety tongs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115072518A true CN115072518A (en) | 2022-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210686011.4A Pending CN115072518A (en) | 2022-06-16 | 2022-06-16 | Cordless speed-limiting safety tongs |
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| Country | Link |
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| CN (1) | CN115072518A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115367678A (en) * | 2022-10-25 | 2022-11-22 | 张家港市国恒装备有限公司 | Self-protective climbing-free device for wind power tower |
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| CN101301976A (en) * | 2008-07-07 | 2008-11-12 | 西子奥的斯电梯有限公司 | Integrated security device of elevator |
| CN102367129A (en) * | 2011-09-28 | 2012-03-07 | 快意电梯有限公司 | Combined type overspeed protective device for elevator |
| CN203820234U (en) * | 2014-05-15 | 2014-09-10 | 快客电梯有限公司 | Elevator speed limiter |
| CN104229589A (en) * | 2014-08-28 | 2014-12-24 | 南通爱利特机电制造有限公司 | High-safety progressive elevator safety gear |
| CN106429698A (en) * | 2016-10-27 | 2017-02-22 | 宜春市特种设备监督检验中心 | Over-speed protection device for elevator |
| CN206108606U (en) * | 2016-10-27 | 2017-04-19 | 宜春市特种设备监督检验中心 | Elevator overspeed protective device |
| CN108946374A (en) * | 2018-08-08 | 2018-12-07 | 西屋电梯有限公司 | A kind of elevator safety limiter of speed |
| CN110182665A (en) * | 2019-06-18 | 2019-08-30 | 广州广日电梯工业有限公司 | A kind of speed-limiting protective device, elevator and its method |
| CN214456049U (en) * | 2021-03-19 | 2021-10-22 | 辽宁捷迅电梯有限公司 | Lifting mechanism of safety tongs on upper beam of elevator car |
| CN114291686A (en) * | 2021-12-29 | 2022-04-08 | 镇江朝阳机电科技有限公司 | Elevator safety braking device |
-
2022
- 2022-06-16 CN CN202210686011.4A patent/CN115072518A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101301976A (en) * | 2008-07-07 | 2008-11-12 | 西子奥的斯电梯有限公司 | Integrated security device of elevator |
| CN102367129A (en) * | 2011-09-28 | 2012-03-07 | 快意电梯有限公司 | Combined type overspeed protective device for elevator |
| CN203820234U (en) * | 2014-05-15 | 2014-09-10 | 快客电梯有限公司 | Elevator speed limiter |
| CN104229589A (en) * | 2014-08-28 | 2014-12-24 | 南通爱利特机电制造有限公司 | High-safety progressive elevator safety gear |
| CN106429698A (en) * | 2016-10-27 | 2017-02-22 | 宜春市特种设备监督检验中心 | Over-speed protection device for elevator |
| CN206108606U (en) * | 2016-10-27 | 2017-04-19 | 宜春市特种设备监督检验中心 | Elevator overspeed protective device |
| CN108946374A (en) * | 2018-08-08 | 2018-12-07 | 西屋电梯有限公司 | A kind of elevator safety limiter of speed |
| CN110182665A (en) * | 2019-06-18 | 2019-08-30 | 广州广日电梯工业有限公司 | A kind of speed-limiting protective device, elevator and its method |
| CN214456049U (en) * | 2021-03-19 | 2021-10-22 | 辽宁捷迅电梯有限公司 | Lifting mechanism of safety tongs on upper beam of elevator car |
| CN114291686A (en) * | 2021-12-29 | 2022-04-08 | 镇江朝阳机电科技有限公司 | Elevator safety braking device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115367678A (en) * | 2022-10-25 | 2022-11-22 | 张家港市国恒装备有限公司 | Self-protective climbing-free device for wind power tower |
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