CN210133796U - Swing type automatic telescopic limiting and blocking device for automobile elevator - Google Patents
Swing type automatic telescopic limiting and blocking device for automobile elevator Download PDFInfo
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- CN210133796U CN210133796U CN201920425888.1U CN201920425888U CN210133796U CN 210133796 U CN210133796 U CN 210133796U CN 201920425888 U CN201920425888 U CN 201920425888U CN 210133796 U CN210133796 U CN 210133796U
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Abstract
The utility model discloses an automatic flexible spacing blocking device of auto elevator oscillating includes the barrier plate, drive division and the switch that targets in place, every drive division corresponds a barrier plate, constitute by the unit at the bottom of the polylith sedan-chair at the bottom of the sedan-chair, the barrier plate is located between two adjacent sedan-chairs at the bottom of, every drive division is including being fixed in the motor of the bottom terminal surface of sedan-chair, the transmission rocking arm of being connected with the motor looks transmission, the transmission rocking arm both sides and fixed mounting are located to the symmetry and the transmission connecting rod of connecting between transmission rocking arm and two scissors fork lift connecting rods of terminal surface under the unit at the bottom of the sedan-chair and are connected respectively, each transmission connecting rod is rather than the scissors fork lift connecting rod and transmission rocking arm. Utilize the motor to drive the swing of swivel arm axle and then drive the transfer line and move towards second synchronous pulley swing shrink or deviate from the swing of second synchronous pulley and keep away from to drive the flexible up-and-down motion that finally realizes the barrier plate along the Z axial of scissor lift connecting rod, the car of being convenient for passes in and out, and spacing stable.
Description
Technical Field
The utility model belongs to the elevator equipment field, in particular to automatic flexible spacing stop device of auto elevator oscillating.
Background
A car elevator is a special freight elevator for carrying non-commercial cars, i.e. private cars used in our daily life. When the car is transported by the elevator car, the car slides in the car due to an emergency reason, the car can possibly crash a car door at the moment, loss is caused to elevator equipment and the car, and even a driver can be alarmed.
Disclosure of Invention
The utility model aims at providing a car elevator oscillating is spacing stop device that stretches out and draws back automatically convenient to car gets into and can guarantee the stability of car when being located the elevator.
In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides an auto elevator oscillating automatic flexible spacing blocking device, use the direction that the car got into the car on the up end of the sedan-chair end of elevator to be X axle direction, perpendicular and be located with the X axle the direction on the up end of the sedan-chair end is the Y axle direction, with the equal vertically direction of X axle and Y axle direction is Z axle direction, blocking device is including locating the barrier plate of automobile parking position front and back and along Z axle direction motion, drive each barrier plate up-and-down motion's drive division and with the switch that targets in place that the drive phase electricity is connected, every the drive division corresponds one the barrier plate, constitute by the unit at the bottom of the polylith sedan-chair at the bottom of the sedan-chair, between two adjacent sedan-chairs are located to the barrier plate, every the drive division is including being fixed in the motor of the bottom terminal surface of sedan-chair, with transmission rocking arm, symmetry that the motor phase transmission is connected locate transmission rocking arm both sides and fixed mounting in the scissor type lift connecting rod of unit The transmission connecting rods are respectively connected with the corresponding scissor type lifting connecting rods and the transmission rotating arm through pivots.
Preferably, the driving part further comprises a motor base fixed on the lower end face of the car platform unit, a first synchronous belt wheel which is coaxial and fixedly connected with an output shaft of the motor, a rotating arm shaft base fixed on the lower end face of the car platform unit, a rotating arm shaft rotatably connected to the rotating arm shaft base, a second synchronous belt wheel which is coaxial and fixedly connected with the rotating arm shaft, and a synchronous belt connected to the second synchronous belt wheel and the first synchronous belt wheel, wherein the transmission rotating arm is fixedly sleeved on the rotating arm shaft.
Preferably, the scissor type lifting connecting rod comprises a fixed scissor seat fixedly arranged on the lower end face of the car bottom and a movable scissor seat fixedly arranged on the lower end face of the barrier plate, the fixed scissor fork seat and the movable scissor fork seat are respectively provided with a waist-shaped hole, the scissor fork type lifting connecting rod also comprises a scissor fork formed by two scissor fork connecting rods with middle parts hinged, the upper end part and the lower end part of one side of the scissors fork are respectively connected with the fixed scissors fork seat and the movable scissors fork seat in a rotating way, and the rotating shaft has no displacement in the Y-axis direction, the upper and lower end parts of the other side of the fixed scissor base are respectively connected with the waist-shaped holes on the fixed scissor base and the movable scissor base through scissor fork pins, the scissor fork pin slides in the waist-shaped hole, the scissor fork pin positioned in the fixed scissor fork seat is a lower scissor fork pin, one end of the third connecting rod is hinged to one end of the second connecting rod, the other end of the third connecting rod is hinged to the lower scissor fork pin, and the scissor fork rotates to drive the movable scissor fork seat to move up and down along the Z axis.
Preferably, the in-place switch comprises an upper in-place switch and a lower in-place switch which are fixedly arranged on the lower end surface of the car bottom, and a switch striking plate which is fixedly arranged at the lower end of the blocking plate and passes through the upper in-place switch and the lower in-place switch in a traveling path.
Further, the switch that targets in place still include fixed mounting in just be located respectively at the bottom of the sedan-chair the switch frame of third connecting rod both sides, go up the switch that targets in place and the switch that targets in place down is located two respectively on the switch frame, the switch beater include with blocker fixed connection's stiff end and respectively with go up the switch that targets in place and the corresponding trigger end that targets in place of the last trigger end that targets in place down of switch and the trigger end that targets in place down, the upper end portion that targets in place the trigger end down targets in place switch one side protruding, the lower tip that targets in place the trigger end on upward targets in place switch one side protruding.
Preferably, the limiting blocking device further comprises guide mechanisms which are arranged at two ends of the blocking plate and arranged along the Z-axis direction, and each guide mechanism comprises a guide sleeve fixed at the bottom of the car and a guide pin which is arranged in the guide sleeve in a penetrating manner and fixed with the blocking plate.
The beneficial effects of the utility model reside in that: the utility model discloses utilize the motor to drive the swing of swivel arm axle and then drive the transfer line and move towards second synchronous pulley swing shrink or deviate from the swing of second synchronous pulley and keep away from to the flexible final realization barrier plate that drives scissors formula lift connecting rod is along Z axial oscilaltion, and the car business turn over of being convenient for, and spacing stability.
Drawings
FIG. 1 is a front view of an automatic telescoping stop device for an automotive elevator;
FIG. 2 is a side view of an automatic telescoping stop device for an automobile elevator;
FIG. 3 is a top view of the automatic retractable blocking device of the car elevator;
FIG. 4 is a schematic view of a vertical guide;
FIG. 5 is a left side view of the scissors lift;
FIG. 6 is a front view of the scissors lift;
FIG. 7 is a right side view of the scissors lift;
FIG. 8 is a schematic view of the connection of a second timing belt to the wheel tumbler;
fig. 9 is a schematic diagram of the in-position switch.
Detailed Description
The invention will be described in detail below with reference to an exemplary embodiment shown in the drawings:
as shown in fig. 1, 2 and 3, the swing type automatic telescopic limit blocking device of the automobile elevator is characterized in that the direction of an automobile entering a car is taken as an X-axis direction on the upper end face of a car bottom of the elevator, the direction which is perpendicular to an X-axis and is positioned on the upper end face of the car bottom is taken as a Y-axis direction, and the direction which is perpendicular to the X-axis and the Y-axis directions is taken as a Z-axis direction, and the blocking device comprises blocking plates which are arranged at the front and the back of a parking position of the automobile and move along the Z-axis direction, a driving part which drives each blocking plate to move up and down, and an in-place switch.
Each driving part corresponds to one blocking plate, each car bottom is composed of a plurality of car bottom units, each blocking plate is arranged between two adjacent car bottoms, each driving part comprises a motor fixed on the bottom end surface of each car, a transmission rotating arm in transmission connection with the motor, scissor type lifting connecting rods symmetrically arranged on two sides of the transmission rotating arm and fixedly arranged on the lower end surface of each car bottom unit, and transmission connecting rods respectively connected to the transmission rotating arms and the two scissor type lifting connecting rods, and each transmission connecting rod is respectively in pivot connection with the corresponding scissor type lifting connecting rod and the corresponding transmission rotating arm. The driving part further comprises a motor base fixed on the lower end face of the car platform unit, a first synchronous belt wheel which is coaxial and fixedly connected with an output shaft of the motor, a rotating arm shaft base fixed on the lower end face of the car platform unit, a rotating arm shaft rotatably connected to the rotating arm shaft base, a second synchronous belt wheel which is coaxial and fixedly connected with the rotating arm shaft, a synchronous belt connected to the second synchronous belt wheel and the first synchronous belt wheel, and the transmission rotating arm is fixedly sleeved on the rotating arm shaft.
The scissor type lifting connecting rod comprises a fixed scissor seat fixedly arranged on the lower end surface of the car bottom and a movable scissor seat fixedly arranged on the lower end surface of the barrier plate, the fixed scissor fork seat and the movable scissor fork seat are respectively provided with a waist-shaped hole, the scissor fork type lifting connecting rod also comprises a scissor fork formed by two scissor fork connecting rods with middle parts hinged, the upper end part and the lower end part of one side of the scissors fork are respectively connected with the fixed scissors fork seat and the movable scissors fork seat in a rotating way, and the rotating shaft has no displacement in the Y-axis direction, the upper and lower end parts of the other side of the fixed scissor base are respectively connected with the waist-shaped holes on the fixed scissor base and the movable scissor base through scissor fork pins, the scissor fork pin slides in the waist-shaped hole, the scissor fork pin positioned in the fixed scissor fork seat is a lower scissor fork pin, one end of the third connecting rod is hinged to one end of the second connecting rod, the other end of the third connecting rod is hinged to the lower scissor fork pin, and the scissor fork rotates to drive the movable scissor fork seat to move up and down along the Z axis.
The in-place switch comprises an upper in-place switch and a lower in-place switch which are fixedly arranged on the lower end face of the car bottom, and a switch striking plate which is fixedly arranged at the lower end of the blocking plate and has a traveling path passing through the upper in-place switch and the lower in-place switch. The switch that targets in place still include fixed mounting in just be located respectively at the bottom of the sedan-chair the switch frame of third connecting rod both sides, go up the switch that targets in place and the switch that targets in place down is located two respectively on the switch frame, the switch beater include with blocker fixed connection's stiff end and respectively with go up the switch that targets in place and the corresponding trigger end that targets in place of the last trigger end that targets in place down and target in place down of switch, the upper end portion that targets in place the trigger end down targets in place switch one side protruding, it is protruding to go up the lower tip that targets in place the trigger end to switch one side of upwards.
The limiting and blocking device further comprises guide mechanisms which are arranged at two ends of the blocking plate and arranged along the Z-axis direction, and each guide mechanism comprises a guide sleeve fixed at the bottom of the car and a guide pin which is arranged in the guide sleeve in a penetrating manner and fixed with the blocking plate.
Specifically, in the present embodiment:
the two side sealing plates 1 are symmetrically arranged in the width direction of the car, and two side surfaces of the side sealing plates 1 in the depth direction of the car are respectively connected with the front car bottom 10 and the middle car bottom 11 to form a cuboid cavity; the middle push plate 2 is positioned in the cuboid cavity and can move up and down in the cavity; the two sets of vertical guiding devices 3 are symmetrically arranged in the width direction of the lift car, and the vertical guiding devices 3 are respectively connected with the middle push plate 2, the front car bottom 10 and the middle car bottom 11, so that the middle push plate 2 keeps vertical movement up and down in the rectangular cavity; the two sets of shear fork lifting devices 4 are symmetrically arranged in the width direction of the lift car, the shear fork lifting devices 4 are respectively connected with the middle push plate 2, the front car bottom 10 and the middle car bottom 11, and the middle push plate 2 moves up and down by changing the angle of the shear fork; the two transmission connecting rods 5 are respectively arranged on the left and right sides in the width direction of the lift car, one end of each transmission connecting rod 5 is connected with the scissor lifting device 4, and the other end of each transmission connecting rod 5 is connected with the belt wheel rotating arm assembly 6 and is used for transmitting the rotating torque of the belt wheel rotating arm assembly to the scissor lifting device 4; the pulley rotating arm assembly 6 is positioned at the center of the two sets of shear fork lifting devices 4, and two ends of the pulley rotating arm assembly are respectively connected with the front car bottom 10 and the middle car bottom 11; the motor 8 is arranged on the front car bottom 10 or the middle car bottom 11 through two motor bases 7; a first synchronous belt pulley 12 is arranged on an output shaft of the motor 8, connected with the first synchronous belt pulley 12 and connected with the belt pulley rotating arm assembly 6 through a synchronous belt 9, and transmits the torque and the rotating speed output by the motor to the belt pulley rotating arm assembly 6; the two in-place switch frames 13 are fixed on the front car bottom 10 and the middle car bottom 11, the lower in-place switch 14 and the upper in-place switch 16 are respectively fixed on the two in-place switch frames 13, the in-place switch striking plate 15 is fixed on the middle push plate 2 and moves up and down along with the middle push plate 2, the lower in-place switch 14 and the upper in-place switch 16 are triggered by bosses on two side edges of the in-place switch striking plate 15, and the middle push plate 2 is limited to push out the height of the plane of the car bottom plate and to fall back to the position of the plane of the car bottom plate. When the car enters or exits the car, the middle push plate 2 falls back to the position flush with the plane of the car bottom plate, and when the car stops stably in the elevator car, the middle push plate pushes out the set height.
The vertical guide device 3 consists of a movable guide pin 301 and a fixed guide sleeve 302, wherein the movable guide pin 301 is fixed on the middle push plate 2, the fixed guide sleeve 302 is respectively fixed on the front car bottom 10 and the middle car bottom 11, and the middle push plate 2 keeps moving vertically through the matching between the movable guide pin 301 and the fixed guide sleeve 302 so as to avoid the deflection and the clamping of the middle push plate 2 when the middle push plate 2 moves up and down;
the scissor lifting device 4 comprises two movable scissor seats 401, an inner scissor 402, an outer scissor 403, two fixed scissor seat pads 404, two fixed scissor seats 405, three first scissor pins 406 and two second scissor pins 407, wherein the two movable scissor seats 401 are arranged on the middle push plate 2 in a face-to-face manner, the two fixed scissor seats 405 are respectively arranged on the front car bottom 10 and the middle car bottom 11 in a back-to-back manner, one end of the outer scissor 403 is connected to shaft holes of the two fixed scissor seats 405 through one of the second scissor pins 407, the outer scissor 403 can rotate around the shaft hole, the end is a rotating end of the outer scissor 403, the other end of the outer scissor 403 is connected to long circular hole grooves 403 of the two movable scissor seats 401 through the other second scissor pin 407, the outer scissor can horizontally move in the long circular hole grooves of the movable scissor seats 401 through the second scissor pin 407, and the end is a horizontally moving end of the outer scissor 403, one end of the inner scissor 402 is connected to the shaft holes of the two movable scissor seats 401 through a first scissor pin 406, the inner scissor 402 can rotate around the shaft holes, the end is the rotating end of the inner scissor 402, the other end of the inner scissor 402 is connected to the slotted hole grooves of the two fixed scissor seats 405 through a first scissor pin 406, the inner scissor 402 at the end can horizontally move in the slotted hole grooves of the fixed scissor seats 405 through the first scissor pin 406, the end is the horizontally moving end of the inner scissor 402, the middle shaft hole of the inner scissor 402 and the middle shaft hole of the outer scissor 403 are connected together through the first scissor pin 406 and can rotate around the first scissor pin 406, the horizontally moving end of the inner scissor 402 is coaxially connected with the transmission connecting rod 5, and the connecting rod A501 pushes or pulls the inner scissor 402 to horizontally move along the slotted hole grooves of the fixed scissor seats 405 through the first scissor pin 406 installed at the end during operation, Under the action of a first scissors pin 406 connected to the middle shaft holes of the inner scissors 402 and the outer scissors 403, the included angle between the inner scissors 402 and the outer scissors 403 is changed, so that the middle push plate 2 is pushed to move vertically, and at the moment, the connecting ends of the outer scissors 403 and the movable scissors 401 move horizontally along the long circular hole groove of the movable scissors 401 under the action of a second scissors pin 407 arranged on the connecting ends;
the pulley rotating arm assembly 6 comprises two rotating arm shaft bases 601, two rotating arm shaft bearings 602, a rotating arm shaft 603, a second synchronous pulley 604, a transmission rotating arm 605, a shaft power-off brake 606, a first key 607 and a second key 608, wherein the two rotating arm shaft bases 601 are respectively arranged on a front car bottom 10 and a middle car bottom 11, the rotating arm shaft 603 is arranged on the rotating arm shaft bases 601 at two sides through the two rotating arm shaft bearings 602, the second synchronous pulley 604 is arranged on the rotating arm shaft 603 and synchronously rotates with the rotating arm shaft 603 through the second key 608, the transmission rotating arm 605 is connected and fixed on the second synchronous pulley 604, a brake disc part of the shaft power-off brake 606 synchronously rotates with the rotating arm shaft 603 through the first key 607, an electromagnetic fixing part is connected on the rotating arm shaft bases 601, and the shaft power-off brake 606 works and limits the rotation of the rotating arm shaft 603 during the power-off;
the transmission sequence of the automatic telescopic limiting blocking device of the automobile elevator is as follows: the motor 8 starts output torque and angular displacement, the first synchronous belt pulley 12 and the output shaft of the motor 8 rotate synchronously, the torque and the angular displacement on the first synchronous belt pulley 12 are transmitted to the second synchronous belt pulley 604 and the transmission rotating arm 605 through the belt walking belt 9, the transmission rotating arm 605 converts the output torque and the angular displacement of the motor 8 into horizontal position and thrust of the horizontal moving end of the inner scissors 402 and changes the horizontal moving end position of the inner scissors 402 through the transmission connecting rod 5, simultaneously, the included angle between the inner scissors 402 and the outer scissors 403 is changed under the action of the first scissors pin 406 connecting the middle shaft holes of the inner scissors 402 and the outer scissors 403, the scissors device pushes the middle push plate 2 to move up and down, and at the moment, through the matching between the movable guide pin 301 and the fixed guide sleeve 302, the middle push plate 2 keeps moving vertically to avoid the deflection and jamming of the middle push plate 2 when moving up and down.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides an automatic flexible spacing blocking device of auto elevator oscillating, the direction that uses the car to get into the car on the up end at the bottom of the sedan-chair of elevator is X axle direction, perpendicular and being located with the X axle the direction on the up end at the bottom of the sedan-chair is the Y axle direction, with the equal vertically direction of X axle and Y axle direction is Z axle direction, blocking device is including locating around the car parking position and along the barrier plate of Z axle direction motion, drive each barrier plate up-and-down motion's drive division and with the switch that targets in place that the drive phase electricity is connected, every the drive division corresponds one the barrier plate, constitute by the unit at the bottom of the polylith sedan-chair at the bottom of the sedan-chair, the barrier plate is located between two adjacent sedan-chairs at the bottom, its characterized in: each driving part comprises a motor fixed on the bottom end face of the car, a transmission rotating arm in transmission connection with the motor, scissor type lifting connecting rods symmetrically arranged on two sides of the transmission rotating arm and fixedly installed on the lower end face of the car bottom unit, and transmission connecting rods respectively connected between the transmission rotating arm and the two scissor type lifting connecting rods, wherein each transmission connecting rod is respectively in pivot connection with the corresponding scissor type lifting connecting rod and the corresponding transmission rotating arm.
2. The auto elevator swing type automatic telescopic limit blocking device according to claim 1, characterized in that: the driving part further comprises a motor base fixed on the lower end face of the car platform unit, a first synchronous belt wheel which is coaxial and fixedly connected with an output shaft of the motor, a rotating arm shaft base fixed on the lower end face of the car platform unit, a rotating arm shaft rotatably connected to the rotating arm shaft base, a second synchronous belt wheel which is coaxial and fixedly connected with the rotating arm shaft, and a synchronous belt connected to the second synchronous belt wheel and the first synchronous belt wheel, wherein the transmission rotating arm is fixedly sleeved on the rotating arm shaft.
3. The auto elevator swing type automatic telescopic limit blocking device according to claim 1, characterized in that: the scissor type lifting connecting rod comprises a fixed scissor fork seat fixedly arranged on the lower end face of the car, a movable scissor fork seat fixedly arranged on the lower end face of the blocking plate, waist-shaped holes are formed in the fixed scissor fork seat and the movable scissor fork seat respectively, the scissor type lifting connecting rod further comprises a scissor fork formed by two scissor fork connecting rods hinged to the middle parts, the upper end part and the lower end part of one side of the scissor fork are connected with the fixed scissor fork seat and the movable scissor fork seat in a rotating mode, the rotating shaft does not have Y-axis displacement, the upper end part and the lower end part of the other side of the scissor fork are connected with the waist-shaped holes in the fixed scissor fork seat and the movable scissor fork seat through scissor fork pins respectively, the scissor fork pins slide in the waist-shaped holes, the scissor pin in the fixed scissor fork seat is a lower scissor fork pin, and the scissor fork rotates to drive the movable scissor fork seat to move up and down along the.
4. The auto elevator swing type automatic telescopic limit blocking device according to claim 1, characterized in that: the in-place switch comprises an upper in-place switch and a lower in-place switch which are fixedly arranged on the lower end face of the car bottom, and a switch striking plate which is fixedly arranged at the lower end of the blocking plate and has a traveling path passing through the upper in-place switch and the lower in-place switch.
5. The auto elevator swing type automatic telescopic limit blocking device according to claim 4, wherein: the switch that targets in place still include fixed mounting in the switch frame at the bottom of the sedan-chair, go up the switch that targets in place and the switch that targets in place down is located two respectively on the switch frame, the switch beater include with barrier plate fixed connection's stiff end and respectively with go up the switch that targets in place and the corresponding trigger end that targets in place and the trigger end that targets in place down on with down, the upper end that targets in place the trigger end down targets in place switch one side protruding, the lower tip that targets in place the trigger end on upwards targets in place switch one side protruding.
6. The auto elevator swing type automatic telescopic limit blocking device according to claim 1, characterized in that: the limiting and blocking device further comprises guide mechanisms which are arranged at two ends of the blocking plate and arranged along the Z-axis direction, and each guide mechanism comprises a guide sleeve fixed at the bottom of the car and a guide pin which is arranged in the guide sleeve in a penetrating manner and fixed with the blocking plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920425888.1U CN210133796U (en) | 2019-03-29 | 2019-03-29 | Swing type automatic telescopic limiting and blocking device for automobile elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920425888.1U CN210133796U (en) | 2019-03-29 | 2019-03-29 | Swing type automatic telescopic limiting and blocking device for automobile elevator |
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| Publication Number | Publication Date |
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| CN210133796U true CN210133796U (en) | 2020-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920425888.1U Active CN210133796U (en) | 2019-03-29 | 2019-03-29 | Swing type automatic telescopic limiting and blocking device for automobile elevator |
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| CN (1) | CN210133796U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109795941A (en) * | 2019-03-29 | 2019-05-24 | 东南电梯股份有限公司 | Car elevator swing type automatic telescopic limits retention device |
| WO2023160058A1 (en) * | 2022-02-28 | 2023-08-31 | 东南电梯股份有限公司 | Connecting rod-type automatic telescopic limiting blocking apparatus for car elevator, and car elevator |
-
2019
- 2019-03-29 CN CN201920425888.1U patent/CN210133796U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109795941A (en) * | 2019-03-29 | 2019-05-24 | 东南电梯股份有限公司 | Car elevator swing type automatic telescopic limits retention device |
| CN109795941B (en) * | 2019-03-29 | 2024-03-19 | 东南电梯股份有限公司 | Swing type automatic telescopic limit blocking device for automobile elevator |
| WO2023160058A1 (en) * | 2022-02-28 | 2023-08-31 | 东南电梯股份有限公司 | Connecting rod-type automatic telescopic limiting blocking apparatus for car elevator, and car elevator |
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