CN107445015B - Elevator anti-falling, overspeed and accidental movement protection system - Google Patents
Elevator anti-falling, overspeed and accidental movement protection system Download PDFInfo
- Publication number
- CN107445015B CN107445015B CN201710736779.7A CN201710736779A CN107445015B CN 107445015 B CN107445015 B CN 107445015B CN 201710736779 A CN201710736779 A CN 201710736779A CN 107445015 B CN107445015 B CN 107445015B
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- Prior art keywords
- connecting rod
- guide groove
- brake unit
- wheel
- bidirectional
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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
- B66B5/16—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
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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
-
- 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
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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
- B66B5/16—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)
- Types And Forms Of Lifts (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention discloses an elevator anti-falling, overspeed and accidental movement protection system, which is characterized in that: the safety device comprises an accidental moving device which synchronously goes up and down along with a lift car, a bidirectional safety gear, a bidirectional speed limiting device and a fixed guide rail which vertically extends; the unexpected moving device and the bidirectional speed limiting device comprise rope pulleys and steel wire ropes are connected between the rope pulleys; the bidirectional safety tongs are arranged between the accidental moving device and the bidirectional speed limiting device, so that the bidirectional safety tongs have the functions of preventing falling, ascending overspeed and accidental movement protection when a car stops.
Description
Technical Field
The invention relates to the technical field of elevator equipment, in particular to an elevator anti-falling, overspeed and accidental movement protection system.
Background
In the modern society, most high-rise buildings such as houses and office buildings are equipped with elevators, the elevators become indispensable tools in daily lives of most people, and the safety of the elevators is more and more important. The abnormal operation of the elevator usually includes overspeed rising, overspeed falling, sudden falling or rising when the elevator opens the door, and the like, and if no effective precautionary measure is made, serious safety accidents can be caused certainly. The existing elevator safety system can only prevent part of accidents, for example, the existing elevator safety system can only prevent the overspeed operation of an elevator or can only prevent accidental movement, a plurality of sets of safety systems are usually required to be additionally arranged on the elevator in order to ensure the safety of the elevator, the integral structure of the elevator is complicated, and the reduction of the production cost and the maintenance cost are not facilitated.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a safe and reliable elevator anti-falling, anti-overspeed and anti-accidental movement protection system.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: an elevator anti-falling, overspeed and accidental movement protection system comprises an accidental movement device, a bidirectional safety gear, a bidirectional speed limiting device and a fixed guide rail, wherein the accidental movement device is synchronously lifted along with a lift car; the unexpected moving device and the bidirectional speed limiting device comprise rope pulleys and steel wire ropes are connected between the rope pulleys; the bidirectional safety gear is arranged between the accidental moving device and the bidirectional speed limiting device and comprises a frame body, an upper brake unit, a lower brake unit, a brake unit support, a first connecting rod, a second connecting rod and a brake swing arm, wherein the frame body and the fixed guide rail form vertical sliding connection; the braking swing arm comprises a swing arm main body and a connecting plate formed at the end part of the swing arm main body, an arc-shaped guide groove is reserved on the connecting plate, and the swing arm main body is connected with the steel wire rope and is pulled by the steel wire rope to swing; one ends of the first connecting rod and the second connecting rod are respectively and correspondingly connected with the upper brake unit and the lower brake unit, and the other ends of the first connecting rod and the second connecting rod are jointly and slidably connected onto the arc-shaped guide groove.
Further, the upper brake unit and the lower brake unit are guide wheels or wedge blocks.
The accidental moving device further comprises a rotating wheel, a static wheel, a swinging seat and an electromagnetic lock pin fixedly installed on the swinging seat, wherein the static wheel is coaxially connected with the rope wheel and synchronously rotates, the rotating axes of the rotating wheel, the static wheel and the swinging seat are overlapped and independently rotate, two sides of the swinging seat are also connected with return springs, the static wheel and the rotating wheel are respectively provided with a plurality of sections of arc-shaped limiting grooves, and the electromagnetic lock pin is used for interlocking the static wheel and the rotating wheel by penetrating through the arc-shaped limiting grooves of the static wheel and the rotating wheel simultaneously.
Further, two-way safety tongs arrange in car both sides to be connected with lazytongs between the two-way safety tongs of both sides, lazytongs is including setting up the drive linkage on the two-way safety tongs of both sides respectively and the main connecting rod of connecting the drive linkage of both sides, drive linkage is including drive connecting rod and L type connecting rod, wherein drive connecting rod both ends are articulated with braking swing arm and L type connecting rod respectively, L type connecting rod still is articulated with support body and main connecting rod simultaneously.
The invention has the beneficial effects that: the elevator anti-falling, overspeed and accidental movement protection system integrates the accidental movement device and the bidirectional safety gear, so that the elevator anti-falling, overspeed and accidental movement protection system has the functions of preventing falling, overspeed ascending and accidental movement protection when a car stops.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic perspective view of a pair of two-way safety tongs according to the present invention.
Fig. 3 is a side view of a pair of bi-directional safety gear of the present invention.
Fig. 4 is an exploded view of a single bi-directional safety gear of the present invention.
Fig. 5 is a front view of the two-way safety gear of the present invention in a normal state.
Fig. 6 is a front view of the lower brake of the bi-directional safety gear of the present invention.
Fig. 7 is a front view of the upper brake of the bi-directional safety gear of the present invention.
Fig. 8 is a schematic perspective view of the unexpected movement apparatus of the present invention.
Fig. 9 is a front view of the accidental movement device of the present invention.
Fig. 10 is a side view of the unintended movement device of this invention.
The braking device comprises 1-bidirectional safety tongs, 11-a frame body, 12-an upper braking unit, 13-a lower braking unit, 14-a braking unit support, 141-a first guide groove, 142-a second guide groove, 15-a first connecting rod, 16-a second connecting rod, 17-a braking swing arm, 171-a swing arm main body, 172-a connecting plate, 173-an arc-shaped guide groove, 181-a main connecting rod, 182-a transmission connecting rod, 183-an L-shaped connecting rod, 2-an accidental movement device, 21-a rope pulley, 22-a rotating wheel, 23-a static wheel, 24-a swing seat, 25-an electromagnetic lock pin, 26-a reset spring, 27-an installation seat, 28-an arc-shaped limiting groove, 3-a bidirectional speed limiting device, 4-a fixed guide rail and 5-a steel wire rope.
Detailed Description
The claimed invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, the protection system in the embodiment comprises an accidental movement device 2 which synchronously ascends and descends along with a car, a bidirectional safety gear 1, a bidirectional speed limiting device 3 and a fixed guide rail 4 which extends vertically. Wherein, the unexpected moving device 2 and the bidirectional speed limiting device 3 both comprise rope pulleys 21, and a steel wire rope 5 is connected between the rope pulleys 21 of the two.
Referring to fig. 2 to 7, the bidirectional safety gear 1 of the bidirectional safety gear 1 is disposed between the unexpected moving device 2 and the bidirectional speed limiting device 3, and includes a frame body 11, an upper braking unit 12, a lower braking unit 13, a braking unit bracket 14, a first link 15, a second link 16, and a braking swing arm 17, where the frame body 11 and the fixed guide rail 4 form a sliding connection in a vertical direction, a first guide groove 141 and a second guide groove 142 are reserved on upper and lower sides of the braking unit bracket 14, respectively, the first guide groove 141 and the second guide groove 142 extend obliquely and are vertically symmetrical to form an unconnected V-shaped structure, and in other embodiments, the first guide groove 141 and the second guide groove 142 may form a connected V-shaped structure without affecting normal use. Meanwhile, the upper brake unit 12 and the lower brake unit 13 are slidably connected to the first guide groove 141 and the second guide groove 142 in a one-to-one correspondence, the upper brake unit 12 and the lower brake unit 13 are guide wheels in this embodiment, and the upper brake unit 12 and the lower brake unit 13 may be replaced by wedges in other embodiments. The braking swing arm 17 comprises a swing arm main body 171 and a connecting plate 172 formed at the end of the swing arm main body 171, an arc-shaped guide groove 173 is reserved on the connecting plate 172, and the swing arm main body 171 is connected with the steel wire rope 5 and is pulled and swung by the steel wire rope 5; one end of the first link 15 and one end of the second link 16 are respectively and correspondingly connected with the upper brake unit 12 and the lower brake unit 13, and the other end of the first link 15 and the other end of the second link 16 are jointly and slidably connected with the arc-shaped guide groove 173.
In this embodiment, the two-way safety tongs 1 are arranged on two sides of the car, and a synchronizing mechanism is connected between the two-way safety tongs 1 on two sides, the synchronizing mechanism includes a transmission linkage respectively arranged on the two-way safety tongs 1 on two sides and a main connecting rod 181 connected with the transmission linkage on two sides, the transmission linkage includes a transmission connecting rod 182 and an L-shaped connecting rod 183, wherein two ends of the transmission connecting rod 182 are respectively hinged with the braking swing arm 17 and the L-shaped connecting rod 183, and the L-shaped connecting rod 183 is also hinged with the frame body 11 and the main connecting rod 181. When the braking swing arm 17 of one of the two-way safety gear 1 is pulled by the unexpected moving device 2, the transmission link 182 of the two-way safety gear 1 is driven by the braking swing arm 17 to swing, then the transmission link 182 drives the L-shaped link 183 of the side to swing, the L-shaped links 183 of the two sides are transmitted through the main link 181, in this embodiment, the hinge points between the L-shaped links 183 of the two sides and the main link 181 are staggered up and down, so that the transmission links 182 of the two sides swing in the same direction, and finally the braking swing arms 17 of the two-way safety gear 1 of the two sides swing in the same direction and synchronously, thereby realizing synchronous braking.
Referring to fig. 8 to 10, the unexpected moving device 2 comprises a mounting base 27, a rope wheel 21 rotatably connected to the mounting base 27, a rotating wheel 22, a stationary wheel 23, a swinging base 24 and an electromagnetic lock pin 25 fixedly mounted on the swinging base 24. Wherein the rope wheel 21 is wound with a steel wire rope 5 connected with the braking swing arm 17. The speed limiting mechanism comprises a rotating wheel 22, a static wheel 23, a swinging seat 24 and an electromagnetic lock pin 25 fixedly arranged on the swinging seat 24. The static wheel 23 and the rope wheel 21 are coaxially connected and synchronously rotate, and the rotating axes of the rotating wheel 22, the static wheel 23 and the swinging seat 24 are superposed and rotate independently. In this embodiment, the stationary wheel 23 and the rope wheel 21 are fixedly connected to the main shaft, a bearing is sleeved between the rotating wheel 22 and the main shaft so that the rotating wheel 22 can rotate independently relative to the main shaft, and in addition, the rotating wheel 22 also rotates synchronously with the car, specifically, the rotating wheel 22 rotates clockwise synchronously when the car ascends, and the rotating wheel 22 rotates counterclockwise synchronously when the car descends; the rotating shaft of the swinging seat 24 is independent of the main shaft, so that the swinging seat 24 can rotate independently. The swing seat 24 is also connected with a return spring 26 on both sides, and in the embodiment, the mounting seat 27 is provided with a fixing plate for matching and mounting the return spring 26. The static wheel 23 and the rotating wheel 22 are provided with a plurality of arc-shaped limiting grooves 28, and the electromagnetic lock pin 25 passes through the arc-shaped limiting grooves 28 of the static wheel 23 and the rotating wheel 22 simultaneously to interlock the static wheel 23 and the rotating wheel 22.
In this embodiment, the bidirectional governor 3 disclosed in CN100460307C is used as the bidirectional governor 3.
The working principle of the embodiment is as follows: when the door of the elevator cage is opened, the electromagnetic lock pin 25 is extended by receiving an electric signal of a control system, and the extended electromagnetic shrink pin simultaneously penetrates through the arc-shaped limiting grooves 28 of the static wheel 23 and the rotating wheel 22 to interlock the static wheel and the rotating wheel. At this time, if the elevator car drops or rises accidentally, the rotating wheel 22 rotates along with the elevator car, when the swing amplitude of the rotating wheel 22 reaches the critical value of the arc-shaped limit groove 28, the electromagnetic lock pin 25 and the swing seat 24 are driven by the rotating wheel 22 to swing, when the swing amplitude of the rotating wheel 22 is further increased to enable the electromagnetic lock pin 25 to touch the critical value of the arc-shaped limit groove 28 of the stationary wheel 23, the stationary wheel 23 is driven by the rotating wheel 22 to rotate, and finally the rope wheel 21 is rotated to pull the steel wire rope 5 to trigger the two-way safety tongs 1 to brake the elevator car.
Because passengers or goods come in and go out when the door of the car is opened, the load in the car is in dynamic change, and the prior art is difficult to completely ensure that the door of the car is completely still when opened, the invention utilizes the arc-shaped limiting grooves 28 of the static wheel 23 and the rotating wheel 22 to reserve certain movement allowance for the car, and the allowance is set within the range of 30mm in the embodiment, namely, as long as the falling or rising distance of the door of the car is not more than 30mm when the door of the car is opened, the electromagnetic lock pin 25 can not touch the arc-shaped limiting groove 28 of the static wheel 23 finally, so that the bidirectional safety gear 1 can brake the elevator car. The technician can adjust the lengths of the arc-shaped limiting grooves 28 of all the stages in the rotating wheel 22 and the static wheel 23 according to actual conditions, thereby adjusting the moving allowance of the arc-shaped limiting grooves. When the door of the elevator car is closed, the electromagnetic lock pin 25 receives the electric signal of the control system to contract, and the interlocking relation between the static wheel 23 and the rotating wheel 22 is released; at the same time, the swing seat 24 is also rotated by the return spring 26, so that the electromagnetic lock pin 25 returns to the original position.
The braking swing arm 17 of the two-way safety gear 1 swings under the traction of the steel wire rope 5, and when swinging, the braking swing arm can drive the upper braking unit 12 or the lower braking unit 13 to slide upwards or downwards along the first guide groove 141 and the second guide groove 142 respectively, and because the first guide groove 141 and the second guide groove 142 extend obliquely, the braking swing arm can gradually cling to the fixed guide rail 4 along with the upper braking unit 12 or the lower braking unit 13, and the car is braked by using the friction force between the braking swing arm and the fixed guide rail 4. In this embodiment, in addition to the unexpected moving device 2, the steel wire rope 5 can be pulled, and when the speed of the elevator car is too high, the bidirectional speed limiting device 3 can also pull the steel wire rope 5 to make the bidirectional safety gear 1 work.
The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to limit the present invention in any way. Those skilled in the art can make many changes and modifications to the disclosed embodiments, or modify equivalent embodiments to practice the disclosed embodiments, without departing from the scope of the disclosed embodiments. Therefore, equivalent variations made according to the idea of the present invention should be covered within the protection scope of the present invention without departing from the contents of the technical solution of the present invention.
Claims (4)
1. The utility model provides an elevator prevents tenesmus, hypervelocity, unexpected protection system that removes which characterized in that: comprises an accidental moving device (2) which synchronously goes up and down along with a lift car, a bidirectional safety gear (1), a bidirectional speed limiting device (3) and a fixed guide rail (4) which vertically extends; the unexpected moving device (2) and the bidirectional speed limiting device (3) both comprise rope wheels (21) and simultaneously a steel wire rope (5) is connected between the rope wheels (21) of the unexpected moving device and the bidirectional speed limiting device; the bidirectional safety gear (1) is arranged between the unexpected moving device (2) and the bidirectional speed limiting device (3) and comprises a frame body (11), an upper brake unit (12), a lower brake unit (13), a brake unit bracket (14), a first connecting rod (15), a second connecting rod (16) and a brake swing arm (17), wherein the frame body (11) and the fixed guide rail (4) are in sliding connection in the vertical direction, a first guide groove (141) and a second guide groove (142) are reserved on the upper side and the lower side of the brake unit bracket (14) respectively, the first guide groove (141) and the second guide groove (142) extend obliquely and are symmetrical up and down so that the first guide groove and the second guide groove are matched to form a connected or disconnected V-shaped structure, and meanwhile, the upper brake unit (12) and the lower brake unit (13) are in sliding connection with the first guide groove (141) and the second guide groove (142) one by one; the braking swing arm (17) comprises a swing arm main body (171) and a connecting plate (172) formed at the end part of the swing arm main body (171), an arc-shaped guide groove (173) is reserved on the connecting plate (172), and the swing arm main body (171) is connected with the steel wire rope (5) and is pulled by the steel wire rope (5) to swing; one end of each of the first connecting rod (15) and the second connecting rod (16) is correspondingly connected with the upper brake unit (12) and the lower brake unit (13) respectively, and the other ends of the first connecting rod (15) and the second connecting rod (16) are connected to the arc-shaped guide groove (173) in a sliding mode.
2. The elevator anti-drop, overspeed, accidental movement protection system of claim 1, wherein: the upper brake unit (12) and the lower brake unit (13) are guide wheels or wedge blocks.
3. The elevator anti-drop, overspeed, accidental movement protection system of claim 1, wherein: the unexpected mobile device (2) further comprises a rotating wheel (22), a static wheel (23), a swinging seat (24) and an electromagnetic lock pin (25) fixedly installed on the swinging seat (24), wherein the static wheel (23) is coaxially connected with the rope wheel (21) and synchronously rotates, the rotating axes of the rotating wheel (22), the static wheel (23) and the swinging seat (24) are overlapped and rotate independently, return springs (26) are connected to two sides of the swinging seat (24), the static wheel (23) and the rotating wheel (22) are provided with a plurality of sections of arc-shaped limit grooves (28), and the electromagnetic lock pin (25) is used for interlocking the static wheel (23) and the rotating wheel (22) through the arc-shaped limit grooves (28) which simultaneously penetrate through the static wheel (23) and the rotating wheel (22).
4. The elevator anti-drop, overspeed, accidental movement protection system of claim 1, wherein: two-way safety tongs (1) are arranged in car both sides to be connected with lazytongs between two-way safety tongs (1) of both sides, lazytongs is including setting up transmission linkage on two-way safety tongs (1) of both sides respectively and connecting main connecting rod (181) of both sides transmission linkage, transmission linkage is including transmission connecting rod (182) and L type connecting rod (183), wherein transmission connecting rod (182) both ends are articulated with braking swing arm (17) and L type connecting rod (183) respectively, L type connecting rod (183) still articulate with support body (11) and main connecting rod (181) simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710736779.7A CN107445015B (en) | 2017-08-24 | 2017-08-24 | Elevator anti-falling, overspeed and accidental movement protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710736779.7A CN107445015B (en) | 2017-08-24 | 2017-08-24 | Elevator anti-falling, overspeed and accidental movement protection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107445015A CN107445015A (en) | 2017-12-08 |
| CN107445015B true CN107445015B (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710736779.7A Active CN107445015B (en) | 2017-08-24 | 2017-08-24 | Elevator anti-falling, overspeed and accidental movement protection system |
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| CN (1) | CN107445015B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3587324A1 (en) * | 2018-06-22 | 2020-01-01 | Otis Elevator Company | Elevator system |
| CN109607348B (en) * | 2018-12-18 | 2023-12-05 | 佛山市昌宏电梯机械有限公司 | Elevator anti-falling, overspeed and accidental movement protection system control circuit |
| CN109911739B (en) * | 2019-03-18 | 2024-02-09 | 杭州优迈科技有限公司 | Bidirectional safety tongs for elevator and elevator |
| KR20220074900A (en) * | 2019-10-07 | 2022-06-03 | 다이나텍, 다이나믹스 앤드 테크놀러지, 에스. 엘. | Electromechanical actuation by flexible transmission for actuation of elevator safety devices |
| CN112110311B (en) * | 2020-10-22 | 2021-12-17 | 苏州博量电梯科技有限公司 | Electronic safety tongs for elevator braking |
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| AU1763697A (en) * | 1996-03-01 | 1997-09-16 | Cobianchi Liftteile Ag | Safety catch and brake block, in particular for lift cars |
| ES2184615A1 (en) * | 2001-05-30 | 2003-04-01 | De Vera Savera Sa | Two-way progressive parachute for lifts |
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| CN107445015A (en) | 2017-12-08 |
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