CN111362093A - Elevator safety tongs lifting mechanism and elevator - Google Patents
Elevator safety tongs lifting mechanism and elevator Download PDFInfo
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- CN111362093A CN111362093A CN202010345853.4A CN202010345853A CN111362093A CN 111362093 A CN111362093 A CN 111362093A CN 202010345853 A CN202010345853 A CN 202010345853A CN 111362093 A CN111362093 A CN 111362093A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- 230000001681 protective effect Effects 0.000 claims description 20
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 12
- 230000004888 barrier function Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 230000001788 irregular Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses an elevator safety gear lifting mechanism and an elevator. The safety gear lifting mechanism comprises a lifting device, a safety gear and a linkage assembly; the two safety tongs are respectively connected with the lifting device through a linkage assembly; the linkage assembly comprises a pull rope and a mounting seat, one end of the pull rope is connected with the lifting slide block, and the other end of the pull rope penetrates through the mounting seat and then is connected with the safety tongs; the second return spring is sleeved on the pull rope between the mounting seat and the safety gear, the mounting position of the safety gear lifting device can be selected according to the well condition, so that the interference of a speed limiter steel wire rope and a well obstacle is avoided, the requirement of installing an elevator in an old building is met, and the application range is wide.
Description
Technical Field
The invention relates to the technical field of elevators, in particular to an elevator safety gear lifting mechanism and an elevator.
Background
With the progress of society, the living standard of people is continuously improved, and the situations that elevators are additionally arranged in private villas and old buildings are more and more. The shaft of the elevator additionally arranged in the private villa or the old building needs to be additionally found for position construction. Generally, limited by the design of existing buildings, the size and shape of the elevator hoistway is generally not the hoistway size of a conventional elevator. As is the villa elevator hoistway.
The position of the conventional safety gear lifting device is fixed relative to the rail, so that the position of the speed limiter and the speed limiter wire rope is fixed. However, when elevators are installed in private villas and old buildings, the arrangement of the elevators is limited due to irregular elevator shafts or obstacles in the elevator shafts, and the elevators cannot be arranged according to the conventional elevators. When the position of barrier and overspeed governor wire rope are in the homonymy, overspeed governor wire rope can interfere with the well barrier for conventional safety tongs pulling apparatus just can not use, thereby brings the trouble for installing additional of elevator.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the problem that the installation requirement cannot be met when the position of a safety gear lifting device is fixed and an elevator shaft is irregular or an obstacle exists in the elevator shaft, and provides an elevator safety gear lifting mechanism and an elevator.
In order to solve the technical problem, the technical scheme adopted by the invention is as follows:
a lifting mechanism of elevator safety gear comprises a lifting device, safety gear and a linkage assembly; the two safety tongs are respectively connected with the lifting device through a linkage assembly;
the lifting device comprises a vertically arranged base plate, the upper end and the lower end of the base plate are bent towards the same side and extend to form an upper flanging and a lower flanging, two guide rods are arranged between the upper flanging and the lower flanging, a lifting slide block is sleeved on the two guide rods, first return springs are respectively sleeved on the two guide rods, and the first return springs are positioned between the upper flanging and the lifting slide block; a lifting plate used for being connected with a speed limiter steel wire rope is fixed on the lifting slide block, and the lifting plate is positioned on one side of the lifting slide block, which is far away from the base plate;
the linkage assembly comprises a pull rope and a mounting seat, one end of the pull rope is connected with the lifting slide block, and the other end of the pull rope penetrates through the mounting seat and then is connected with the safety tongs; a second return spring is sleeved on the pull rope between the mounting seat and the safety gear.
Through setting up the linkage subassembly, and the linkage subassembly adopts the stay cord, and the length of stay cord can set up as required, therefore overspeed governor wheel and overspeed governor wire rope installation do not receive the restriction that traditional elevator must install in guide rail one side, have realized installing overspeed governor wheel and overspeed governor wire rope in other sides of elevator. When the elevator is additionally installed in the private villa and the old building, the installation of the elevator is not influenced by the irregularity of the shaft or the barrier in the shaft, the use scene of the elevator is widened, and the installation of the elevator is more flexible and convenient.
Preferably, a positioning screw is further arranged between the upper flanging and the lower flanging, and the positioning screw is positioned between the two guide rods; the positioning screw rod penetrates through the lifting slide block and is connected with the lifting slide block in a sliding fit mode, the two ends of the positioning screw rod are connected with the upper flanging and the lower flanging, and a limiting nut used for limiting the slide block is fixed at one end, close to the upper flanging, of the positioning screw rod. The lifting slide block is limited through the limiting nut, the movement range of the lifting slide block and the movement range of the lifting plate are adjusted through adjusting the position of the limiting nut on the positioning screw rod, and when the elevator normally operates, the speed limiter steel wire rope can be driven to move through the lifting plate, so that misoperation of safety tongs is prevented.
Preferably, the guide rod and the positioning screw rod are respectively fixed on the upper flanging and the lower flanging of the base plate through locking nuts, so that the fixing is convenient and firm, and the stability of the lifting device is improved.
Preferably, the lower side of the lifting slide block is provided with a positioning flange which extends downwards; and the pull ropes of the two groups of linkage assemblies respectively penetrate through the lower flanging and are fixed on the positioning flanging through bolts and are positioned on the outer sides of the two guide rods. The pull rope is fixed on the positioning flanging, so that the installation is convenient.
Preferably, the linkage assembly further comprises a sleeve, the sleeve is sleeved on the pull rope between the mounting seat and the lower flanging of the base plate, and two ends of the sleeve are fixed on the lower flanging of the mounting seat and the base plate through sleeve bolts respectively. The prestress of the steel wire can be adjusted through the sleeve bolt, the steel wire rope is kept in a stretched state, and the reliability of the whole lifting mechanism is improved.
Preferably, the sleeve comprises a plastic protective sleeve, a flexible steel sleeve and a lining protective sleeve, the plastic protective sleeve is sleeved on the outer side of the flexible steel sleeve, the flexible steel sleeve is sleeved on the outer side of the lining protective sleeve, and the pull rope is located in the lining protective sleeve and can freely slide in the lining protective sleeve. Thus, the movement of the pull rope is not easily affected by the outside, and quick response of the pull rope to the action of the speed limiter is ensured.
Preferably, the mounting base comprises a first support arm arranged horizontally and a second support arm arranged vertically, and a first through hole is formed in the first support arm; the safety tongs are provided with a lifting arm, the pulling rope penetrates through the first through hole and then is connected with the lifting arm, and the second return spring is positioned between the first supporting arm and the lifting arm; the second support arm is provided with a positioning hole for fixing the mounting base on the lift car. Therefore, the pulling rope can drive the other end to pull the pulling arm of the safety gear when one end of the pulling rope rises along with the pulling slide block, and therefore the safety gear can be effectively pulled.
Preferably, the lifting arm comprises a third support arm positioned above the safety gear and a vertically arranged fourth support arm, and the fourth support arm is connected with a wedge block of the safety gear; the second return spring is positioned between the first support arm and the third support arm; an adjusting bolt is vertically arranged on the third support arm, a screw rod of the adjusting bolt vertically penetrates through the third support arm and then is connected with an adjusting nut, and the pull rope is fixedly connected with the adjusting bolt. In this way, the second return spring can effect a return of the safety gear after the action of the governor wheel has disappeared. And the pre-tightening force of the second return spring can be adjusted through the adjusting bolt.
Preferably, the pull rope is a steel wire rope, and the steel wire rope can be bent and has strength meeting the performance of the elevator.
The invention also provides an elevator, which comprises the elevator safety gear lifting mechanism. Because the elevator safety tongs lifting mechanism is arranged, the elevator can install the speed limiter wheel and the speed limiter steel wire rope on other sides of the elevator without being influenced by the fact that a well is irregular or a barrier exists in the well, the use scene of the elevator is widened, and the elevator is more flexible and convenient to install.
Compared with the prior art, the invention has the following advantages:
through setting up the linkage subassembly, and the linkage subassembly adopts the stay cord, and the length of stay cord can set up as required, therefore overspeed governor wheel and overspeed governor wire rope installation do not receive the restriction that traditional elevator must install in guide rail one side, have realized installing overspeed governor wheel and overspeed governor wire rope in other sides of elevator. When the elevator is additionally installed in the private villa and the old building, the installation of the elevator is not influenced by the irregularity of the shaft or the barrier in the shaft, the use scene of the elevator is widened, and the installation of the elevator is more flexible and convenient.
Drawings
Fig. 1 is a schematic view of a lifting mechanism of an elevator safety gear according to the invention (the sleeve is not shown in the figure).
Fig. 2 is a schematic diagram of a lifting device in a lifting mechanism of elevator safety tongs.
Fig. 3 is a schematic diagram of a safety gear and a linkage assembly in an elevator safety gear lifting mechanism.
Fig. 4 is a schematic view of a sleeve in a lifting mechanism of an elevator safety gear of the invention.
In the figure: the lifting device comprises a lifting device 1, a base plate 11, an upper flanging 111, a lower flanging 112, a guide rod 12, a first return spring 121, a lifting slider 13, a lifting plate 14, a positioning screw 15, a limit nut 16, safety tongs 2, a lifting arm 21, a linkage assembly 3, a pull rope 31, a mounting seat 32, a second return spring 33, an adjusting bolt 331, a sleeve 34, a sleeve bolt 341, a plastic protective sleeve 342, a flexible steel sleeve 343 and a lining protective sleeve 344.
Detailed Description
The invention will be further explained with reference to the drawings and the embodiments.
Example (b):
referring to fig. 1-3, an elevator safety gear lifting mechanism comprises a lifting device 1, a safety gear 2 and a linkage assembly 3. The safety gear 2 and the linkage component 3 are two, and the two safety gears 2 are respectively connected with the lifting device 1 through the linkage component 3. The lifting device 1 is provided with a base plate 11, the upper end and the lower end of the base plate 11 are respectively bent towards the same side and extend to form an upper flanging 111 and a lower flanging 112, two guide rods 12 are arranged between the upper flanging 111 and the lower flanging 112, a lifting slide block 13 is sleeved on the two guide rods 12, first return springs 121 are respectively sleeved on the two guide rods 12, and the first return springs 121 are positioned between the upper flanging 111 and the lifting slide block 13. In specific implementation, a positioning screw 15 is further disposed between the upper flange 111 and the lower flange 112, and the positioning screw 15 is located between the two guide rods 12. The positioning screw 15 penetrates through the lifting slide block 13 and is connected with the lifting slide block 13 in a sliding fit manner, two ends of the positioning screw are connected with the upper flanging 111 and the lower flanging 112, and a limiting nut 16 used for limiting the lifting slide block 13 is fixed at one end, close to the upper flanging 111, of the positioning screw 15. The lifting slider 13 is limited by the limit nut 16, the movement range of the lifting slider 13 and the lifting plate 14 and the pre-pressure of the first return spring 121 are adjusted by adjusting the position of the limit nut 16 on the positioning screw 15, and the speed limiter steel wire rope is driven by the lifting plate 14 to move when the elevator normally operates, so that the safety tongs 2 are prevented from misoperation. The guide rod 12 and the positioning screw 15 are respectively fixed on the upper flange 111 and the lower flange 112 of the base plate 11 through locking nuts, so that the fixing is convenient and firm, and the stability of the lifting device 1 is improved. During processing, the cross section of the lifting slide block 13 is in a C shape, and the opening end of the lifting slide block 13 is close to the base plate 11. A lifting plate 14 used for being connected with the speed limiter steel wire rope is fixed on the lifting slide block 13, and the lifting plate 14 is positioned on one side of the lifting slide block 13, which is far away from the base plate 11. Two ends of the lifting plate 14 are respectively connected with the speed limiter steel wire rope and used for transmitting the action instruction transmitted by the speed limiter steel wire rope to the lifting slide block 13 of the lifting device 1.
The linkage assembly 3 includes a pull cord 31 and a mount 32. One end of the pull rope 31 is connected with the lifting slide block 13, and the other end of the pull rope passes through the mounting seat 32 and then is connected with the safety gear 2. A second return spring 33 is sleeved on the pull rope 31 between the mounting seat 32 and the safety gear 2. Preferably, the pull rope 31 is a steel wire rope, and the steel wire rope can be bent and has strength meeting the performance of the elevator. When in use, one side end part of the lifting slide block 13 close to the lower flanging 112 is bent and extended towards the lower flanging 112 to form a positioning flanging. The pull ropes 31 of the two groups of linkage assemblies 3 respectively penetrate through the lower flanging 112 and then are fixed on the positioning flanging through bolts and are positioned at the outer sides of the two guide rods 12. The pull ropes 31 are respectively fixed on the positioning turned edges, so that the installation is convenient. The mounting base 32 includes a first support arm and a second support arm, wherein the first support arm is transversely arranged and the second support arm is vertically arranged, and a first through hole is formed in the first support arm. The safety gear 2 is provided with a lifting arm 21, the pulling rope 31 is connected with the lifting arm 21 after passing through the first through hole, and the second return spring 33 is positioned between the first supporting arm and the lifting arm 21. The second arm is provided with a positioning hole for fixing the mount 32 to the car. Thus, the pulling rope 31 can simultaneously drive the pulling arm 21 of the pulling safety gear 2 to be lifted when the pulling slide block 13 is lifted, and the safety gear 2 can be effectively pulled. The lifting arm 21 comprises a third support arm positioned above the safety gear 2 and a vertically arranged fourth support arm, and the fourth support arm is connected with a wedge block of the safety gear 2. The second return spring 33 is located between the first arm and the third arm. An adjusting bolt 331 is vertically arranged on the third support arm, a screw rod of the adjusting bolt 331 vertically penetrates through the third support arm and then is connected with an adjusting nut, and the pre-tightening force of the second return spring 33 can be adjusted through the adjusting nut 331. The pull rope 31 is fixedly connected to the adjusting bolt 331. In this way, the second return spring 33 can effect a return of the safety gear 2 after the action of the governor wheel has disappeared. Referring to fig. 4, the linkage assembly 3 further includes a bushing 34. The sleeve 34 is sleeved on the pull rope 31 between the mounting seat 32 and the lower flange 112 of the base plate 11, and two ends of the sleeve are respectively fixed on the mounting seat 32 and the lower flange 112 of the base plate 11 through sleeve bolts 341. The prestress of the pull rope 31 can be adjusted through the sleeve bolt 341, the straight state of the pull rope 31 is preserved, and the reliability of the whole lifting mechanism is improved. Specifically, the casing 34 includes a plastic protective sleeve 342, a flexible steel sleeve 343, and an inner liner protective sleeve 344. The plastic protective sleeve 342 is sleeved outside the flexible steel sleeve 343, the flexible steel sleeve 343 is sleeved outside the lining protective sleeve 344, and the pulling rope 31 is located in the lining protective sleeve 344 of the sleeve 34 and can freely slide in the lining protective sleeve 344. The sleeve 34 protects the rope 31, and prevents the movement of the rope from being affected by the outside, thereby ensuring quick response to the operation of the governor.
The working process is as follows:
when the elevator normally operates, the linkage assembly 3 can drag the steel wire rope of the speed limiter to normally move. The position of the lifting slide block 13 is limited by a limit nut 16 on the positioning screw rod 15, so that when the elevator runs, a lifting plate 14 connected with the lifting slide block 13 drives a speed limiter steel wire rope to normally move up and down along with the elevator.
When the speed limiter acts, the speed limiter steel wire rope drives the lifting plate 14 connected with the speed limiter steel wire rope to move upwards and drives the lifting slide block 13 to move upwards, so that the pull rope 31 is driven to move upwards, the wedge-shaped slide block of the safety gear 2 is driven to slide upwards, the safety gear 2 acts, and the car frame is fixed on the track.
When the speed governor does not act, the safety gear 2 is reset through the second return spring 33, the pull rope 31 is driven to reset, the pulling slide block 13 and the pulling plate 14 are reset under the driving of the pull rope 31 and the first return spring 121, and the elevator is enabled to return to normal operation.
Through setting up the linkage subassembly, and the linkage subassembly adopts the stay cord, and the length of stay cord can set up as required, therefore overspeed governor wheel and overspeed governor wire rope installation do not receive the restriction that traditional elevator must install in guide rail one side, have realized installing overspeed governor wheel and overspeed governor wire rope in other sides of elevator. When the elevator is additionally installed in the private villa and the old building, the installation of the elevator is not influenced by the irregularity of the shaft or the barrier in the shaft, the use scene of the elevator is widened, and the installation of the elevator is more flexible and convenient.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all that should be covered by the claims of the present invention.
Claims (10)
1. A lifting mechanism of elevator safety gear is characterized by comprising a lifting device, safety gear and a linkage component; the two safety tongs are respectively connected with the lifting device through a linkage assembly;
the lifting device comprises a vertically arranged base plate, the upper end and the lower end of the base plate are bent towards the same side and extend to form an upper flanging and a lower flanging, two guide rods are arranged between the upper flanging and the lower flanging, a lifting slide block is sleeved on the two guide rods, first return springs are respectively sleeved on the two guide rods, and the first return springs are positioned between the upper flanging and the lifting slide block; a lifting plate used for being connected with a speed limiter steel wire rope is fixed on the lifting slide block, and the lifting plate is positioned on one side of the lifting slide block, which is far away from the base plate;
the linkage assembly comprises a pull rope and a mounting seat, one end of the pull rope is connected with the lifting slide block, and the other end of the pull rope penetrates through the mounting seat and then is connected with the safety tongs; a second return spring is sleeved on the pull rope between the mounting seat and the safety gear.
2. The elevator safety gear lifting mechanism according to claim 1, wherein a positioning screw is further arranged between the upper flanging and the lower flanging, and the positioning screw is positioned between the two guide rods; the positioning screw rod penetrates through the lifting slide block and is connected with the lifting slide block in a sliding fit mode, the two ends of the positioning screw rod are connected with the upper flanging and the lower flanging, and a limiting nut used for limiting the lifting slide block is fixed at one end, close to the upper flanging, of the positioning screw rod.
3. The elevator safety gear lifting mechanism according to claim 2, wherein the guide rod and the positioning screw are fixed to the upper and lower flanges of the base plate by locking nuts, respectively.
4. The elevator safety gear lifting mechanism according to claim 1, wherein the lower side of the lifting slide block is provided with a positioning flange extending downwards; and the pull ropes of the two groups of linkage assemblies respectively penetrate through the lower flanging and are fixed on the positioning flanging through bolts and are positioned on the outer sides of the two guide rods.
5. The elevator safety gear lifting mechanism according to any one of claims 1 to 4, wherein the linkage assembly further comprises a sleeve, the sleeve is sleeved on the pull rope between the mounting seat and the lower flange of the base plate, and two ends of the sleeve are respectively fixed on the mounting seat and the lower flange of the base plate through sleeve bolts.
6. The elevator safety gear lifting mechanism according to claim 5, wherein the sleeve comprises a plastic protective sleeve, a flexible steel sleeve and a lining protective sleeve, the plastic protective sleeve is sleeved outside the flexible steel sleeve, the flexible steel sleeve is sleeved outside the lining protective sleeve, and the pull rope is located in the lining protective sleeve and can freely slide in the lining protective sleeve.
7. The elevator safety gear lifting mechanism according to claim 1, wherein the mounting base comprises a first support arm arranged horizontally and a second support arm arranged vertically, and a first through hole is formed in the first support arm; the safety tongs are provided with a lifting arm, the pulling rope penetrates through the first through hole and then is connected with the lifting arm, and the second return spring is positioned between the first supporting arm and the lifting arm; the second support arm is provided with a positioning hole for fixing the mounting base on the lift car.
8. The elevator safety gear lifting mechanism according to claim 7, wherein the lifting arm comprises a third arm positioned above the safety gear and a vertically arranged fourth arm, and the fourth arm is connected with a wedge block of the safety gear; the second return spring is positioned between the first support arm and the third support arm; an adjusting bolt is vertically arranged on the third support arm, a screw rod of the adjusting bolt vertically penetrates through the third support arm and then is connected with an adjusting nut, and the pull rope is fixedly connected with the adjusting bolt.
9. The elevator safety gear lifting mechanism according to claim 1, wherein the pull rope is a wire rope.
10. An elevator characterized by comprising an elevator safety gear lifting mechanism according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010345853.4A CN111362093B (en) | 2020-04-27 | 2020-04-27 | Elevator safety tongs lifting mechanism and elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010345853.4A CN111362093B (en) | 2020-04-27 | 2020-04-27 | Elevator safety tongs lifting mechanism and elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111362093A true CN111362093A (en) | 2020-07-03 |
| CN111362093B CN111362093B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010345853.4A Active CN111362093B (en) | 2020-04-27 | 2020-04-27 | Elevator safety tongs lifting mechanism and elevator |
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| CN (1) | CN111362093B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022017510A1 (en) * | 2020-07-24 | 2022-01-27 | 刘英辉 | Safety gear lifting device, elevator car and method for using same |
| EP4234470A1 (en) * | 2022-02-23 | 2023-08-30 | Elgo Batscale AG | Trigger unit for a catching device |
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| CN107187988A (en) * | 2017-06-30 | 2017-09-22 | 快意电梯股份有限公司 | Brake device for elevator and its shift mechanism |
| CN207078853U (en) * | 2017-06-30 | 2018-03-09 | 快意电梯股份有限公司 | Brake device for elevator and its shift mechanism |
| CN107416634A (en) * | 2017-09-19 | 2017-12-01 | 西继迅达（许昌）电梯有限公司 | A kind of elevator safety gear two-way reset mechanism |
| CN207175128U (en) * | 2017-09-19 | 2018-04-03 | 西继迅达（许昌）电梯有限公司 | A kind of elevator safety gear two-way reset mechanism |
| CN208327024U (en) * | 2018-06-04 | 2019-01-04 | 巨人通力电梯有限公司 | Novel safety tongs shift mechanism |
| CN212101540U (en) * | 2020-04-27 | 2020-12-08 | 重庆迈高电梯有限公司 | Elevator safety tongs lifting mechanism and elevator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022017510A1 (en) * | 2020-07-24 | 2022-01-27 | 刘英辉 | Safety gear lifting device, elevator car and method for using same |
| EP4234470A1 (en) * | 2022-02-23 | 2023-08-30 | Elgo Batscale AG | Trigger unit for a catching device |
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| CN111362093B (en) | 2024-05-24 |
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