CN214828143U - Traction type elevator fault self-rescuing and escaping device - Google Patents
Traction type elevator fault self-rescuing and escaping device Download PDFInfo
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- CN214828143U CN214828143U CN202120586083.2U CN202120586083U CN214828143U CN 214828143 U CN214828143 U CN 214828143U CN 202120586083 U CN202120586083 U CN 202120586083U CN 214828143 U CN214828143 U CN 214828143U
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Abstract
The utility model belongs to the field of elevator safety, in particular to a traction type elevator fault self-rescue escaping device, a shell is arranged on one side of a main shaft end wheel of an elevator traction machine, a clutch device, a traction device and a control system are respectively arranged on the shell, a flat layer induction sensor and a weighing device are respectively arranged on a cage, a control button is arranged in the cage, the flat layer induction sensor, the control button, the weighing device and a gantry crane are all connected with the control system through traveling cables, and the control system is connected with a band-type brake of the elevator through cables; the electric push rod and the speed reducing motor are respectively connected with the control system, the dragging device is connected with the output end of the electric push rod, the driving wheel is abutted to or separated from the main shaft end wheel of the elevator through the driving of the electric push rod, and the main shaft end wheel is driven to rotate forwards or backwards through the driving of the speed reducing motor when the driving wheel is abutted to the main shaft end wheel, so that the lift car is driven to lift. The utility model discloses can realize the total coverage to elevator operating condition, be fit for the towed elevator lectotype of various specification models and adopt.
Description
Technical Field
The utility model belongs to elevator safety field, specifically speaking are tow formula elevator trouble device of getting rid of poverty of saving oneself.
Background
The traction type elevator is the elevator which has the largest number of actual installations and is most widely applied at present. When the traction elevator has a stopping failure due to an interruption of an external power supply or a quality problem of the traction elevator, passengers in the car are actually trapped. When this occurs, the passenger can only passively wait for the professional to rescue from the outside. The passengers can be harmfully influenced by being in a relatively narrow car space for a long time, and the passengers can blindly save themselves by taking wrong actions such as 'door opening', equipment damage is caused, and personal injury accidents are even caused.
At present, the main problem of the existing self-rescue devices on the market is that the self-rescue devices only can work under specific working conditions and cannot cover all working conditions of elevator operation (for example, the weight of trapped passengers and the weight of an elevator counterweight are in a range considered to be equal). In practical application, the phenomenon that self-rescue and difficulty-escaping cannot be realized when the device deviates from a specific working condition often occurs.
SUMMERY OF THE UTILITY MODEL
In order to solve and tow formula elevator and lead to the passenger to appear above-mentioned problem because of stopping the ladder trouble appearing, realize saving oneself of whole operating modes, the utility model aims to provide a tow formula elevator trouble device of getting rid of poverty of saving oneself. When the traction type elevator control system fails and passengers of the elevator are trapped in the car, the traction type elevator fault self-rescue escaping device can realize self-rescue and safe escaping of the passengers in the elevator.
The purpose of the utility model is realized through the following technical scheme:
the utility model discloses a flat bed inductive transducer, clutch, drive device, control system, weighing device and casing, wherein the casing is installed in elevator hauler main shaft end wheel one side, clutch, drive device and control system are installed respectively on the casing, flat bed inductive transducer and weighing device are installed respectively on the car, are equipped with control button in this car, flat bed inductive transducer, control button, weighing device and the door machine of elevator all link to each other with control system through the retinue cable, control system is connected with the band-type brake of elevator through the cable; the power source in the separation device and the power source in the dragging device are respectively connected with the control system, the dragging device is connected with the power source output end in the separation device, the execution component in the dragging device is connected with or separated from the main shaft end wheel of the elevator through the power source drive in the separation device, and drives the main shaft end wheel to rotate forwards or backwards through the power source drive in the dragging device when connected with the main shaft end wheel in an abutting mode, so that the lift car is driven to lift.
Wherein: the power source in the separation device is an electric push rod which is arranged on the shell, and the output end of the electric push rod is connected with the dragging device.
The clutch device further comprises a guide mechanism, the guide mechanism comprises two groups of guide plates which are arranged from top to bottom, each group of guide plates is two, guide sliding grooves are formed in the opposite sides of the two guide plates in each group, and the dragging device achieves guiding through the guide sliding grooves in the moving process.
The power source in the dragging device is a speed reducing motor, the executing part in the dragging device is a driving wheel, the output end of the speed reducing motor is connected with the driving wheel, and the speed reducing motor and the driving wheel are driven to move by the power source in the separating device.
The dragging device further comprises a motor mounting frame, the motor mounting frame is connected to a power source output end of the separation device, the speed reduction motor is fixed to the motor mounting frame, and one side, facing the spindle end wheel, of the driving wheel is exposed out of the motor mounting frame.
The control system comprises an Uninterruptible Power Supply (UPS), a Programmable Logic Controller (PLC), a switching power supply T1, a switching power supply T2, a time delay relay SJJ, an alternating current contactor BZJ, an electromagnetic relay J1 and an electromagnetic relay J2, wherein a power source in the separation device is an electric push rod, and a power source in the dragging device is a speed reduction motor; uninterrupted power source UPS passes through supply cable and is switching power supply T1, switching power supply T2, time delay relay SJJ, ac contactor BZJ power supply respectively, switching power supply T1 is the band-type brake power supply of elevator, switching power supply T2 is PLC, electromagnetic relay J1, electromagnetic relay J2, electric putter and gear motor power supply respectively.
The PLC is respectively connected with the leveling induction sensor, the weighing device and the control button, and the first, second, third and fourth output ends of the PLC are respectively connected with the first normally closed contact of the electromagnetic relay J1, the coil of the electromagnetic relay J1, the coil of the electromagnetic relay J2 and the coil of the alternating current contactor BZJ; a first normally closed contact of the electromagnetic relay J1 is connected with a door machine;
the UPS is respectively connected with the input end of the switch power supply T1 and the input end of the switch power supply T2;
a coil of a time delay relay SJJ is connected between two input ends of the switching power supply T1, and a first normally open contact of an electromagnetic relay J1 is connected between the UPS and the input end of the switching power supply T1; a first normally open contact of an alternating current contactor BZJ, a normally closed contact of a time delay relay SJJ, a diode and a brake coil are connected in series between the positive output end and the negative output end of the switching power supply T1;
an electric push rod circuit, a speed reducing motor circuit and a weighing device circuit are connected in parallel between the positive output end and the negative output end of the switching power supply T2;
the electric push rod circuit comprises a second normally closed contact of an electromagnetic relay J1, an electric push rod power supply input end of the clutch device and a third normally closed contact of an electromagnetic relay J1 which are sequentially connected in series;
the speed reducing motor circuit comprises a second normally open contact of the alternating current contactor BZJ, a first normally closed contact of the electromagnetic relay J2, a speed reducing motor power supply input end and a second normally closed contact of the electromagnetic relay J2 which are sequentially connected in series;
the weighing device circuit is a power input end of the weighing device.
The utility model discloses an advantage does with positive effect:
1. the utility model has the characteristics of compact structure, safe and reliable, make with low, the adaptation wide range of maintenance cost, can not rely on elevator control system and the autonomous working to can realize the full coverage to elevator operating condition, be fit for the towed elevator lectotype of various specification models and adopt.
2. The utility model discloses make the elevator of stranded car take personnel just can master this self-rescue of towing formula elevator trouble behind observing concise instruction description and get rid of poverty, make the elevator of stranded car take personnel and in time get rid of poverty through saving oneself to the messenger takes the elevator and becomes safer.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic perspective view of the clutch device, the dragging device and the housing of the present invention;
wherein: the device comprises a flat bed induction sensor 1, a clutch device 2, an electric push rod 201, a guide mechanism 202, a guide plate 2021, a guide chute 2022, a dragging device 3, a speed reducing motor 301, a motor mounting rack 302, a driving wheel 303, a main shaft end wheel 4, a brake 5, a cable 6, a control system 7, a weighing device 8, a gantry crane 9, a control button 10, a traveling cable 11, a power supply cable 12, a shell 13 and a lift car 14, wherein the flat bed induction sensor 1 is a flat bed induction sensor, the clutch device 2 is a clutch device, the electric push rod 201 is an electric push rod, the guide mechanism 202 is a guide mechanism, the main shaft end wheel 4 is a main shaft end wheel, the brake 6 is a cable, the control system 7 is a weighing device, the gantry crane 9 is a gantry crane, the control button 10 is a control button is a traveling cable 11, the power supply cable 12 is a power supply cable, and the lift car 14 is a lift car;
fig. 3 is one of the circuit diagrams of the present invention;
fig. 4 is a second circuit diagram of the present invention;
fig. 5 is a third circuit diagram of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the utility model discloses a flat bed inductive sensor 1, clutch 2, drive device 3, control system 7, weighing device 8 and casing 13, wherein casing 13 is installed in elevator hauler main shaft end wheel 4 one side, install clutch 2, drive device 3 and control system 7 on the casing 13 respectively, flat bed inductive sensor 1 and weighing device 8 are installed respectively on the car 14 of elevator, be equipped with control button 10 in this car 14, flat bed inductive sensor 1, control button 10, weighing device 8 and the door machine 9 of elevator all link to each other with control system 7 through retinue cable 11, control system 7 is connected with band-type brake 5 of elevator through cable 6; the weighing device 8 of the present embodiment is a load cell, and the control button 10 of the present embodiment is externally provided with a protection cover with a false touch prevention design. The power source in the clutch device 2 and the power source in the dragging device 3 are respectively connected with the control system 7, the dragging device 3 is connected with the power source output end in the clutch device 2, the execution component in the dragging device 3 is connected with or separated from the main shaft end wheel 4 of the elevator through the power source drive in the clutch device 2, and drives the main shaft end wheel 4 to rotate forwards or backwards through the power source drive in the dragging device 3 when connected with the main shaft end wheel 4 in an abutting mode, so that the lift car 14 is driven to lift.
The power source of the clutch device 2 of the present embodiment is an electric push rod 201, the electric push rod 201 is fixed on the housing 13, and the output end is connected with the dragging device 3. The clutch device 2 of this embodiment further includes a guide mechanism 202, the guide mechanism 202 includes two sets of guide plates 2021 disposed up and down, each set of guide plates 2021 is two, guide sliding grooves 2022 are provided on opposite sides of each set of two guide plates 2021, and the dragging device 3 realizes guiding through the guide sliding grooves 2022 in the moving process.
The power source of the dragging device 3 of the embodiment is a speed reducing motor 301, the actuating component of the dragging device 3 is a driving wheel 303, and the dragging device 3 further comprises a motor mounting rack 302; the motor mounting bracket 302 is connected with the output end of the electric push rod 201, the upper side and the lower side of the motor mounting bracket 302 are respectively accommodated in the guide chute 2022 between the upper guide plate 2021 and the lower guide plate 2021, and the motor mounting bracket 302 is driven by the electric push rod 201 to move along the guide chute 2022; the speed reducing motor 301 is fixed on the motor mounting frame 302, the output end of the speed reducing motor 301 is connected with the driving wheel 303, and the speed reducing motor 301 and the driving wheel 303 are driven to move together with the motor mounting frame 302 through the electric push rod 201. The drive wheel 303 is exposed from the motor mounting bracket 302 on the side facing the spindle end wheel 4, and abuts against the spindle end wheel 4.
As shown in fig. 3 to 5, the control system 7 of the present embodiment is configured to control the band-type brake 5 to perform brake releasing and closing operations, control the engagement and disengagement of the clutch device 2, and control the start and stop of the dragging device 3 and the opening and closing operations of the door operator 9; the control system 7 comprises an uninterruptible power supply UPS, a PLC, a switching power supply T1, a switching power supply T2, a time delay relay SJJ, an alternating current contactor BZJ, an electromagnetic relay J1 and an electromagnetic relay J2, wherein the uninterruptible power supply UPS supplies power to the switching power supply T1, the switching power supply T2, the time delay relay SJJ and the alternating current contactor BZJ through a power supply cable 12, the switching power supply T1 supplies power to a band-type brake 5 of the elevator, and the switching power supply T2 supplies power to the PLC, the electromagnetic relay J1, the electromagnetic relay J2, the electric push rod 201 and the speed reduction motor 301. The UPS of this embodiment is a charging power supply.
The PLC is respectively connected with the leveling induction sensor 1, the weighing device 8 and the control button 10, and the first, second, third and fourth output ends of the PLC are respectively connected with the first normally closed contact of the electromagnetic relay J1, the coil of the electromagnetic relay J1, the coil of the electromagnetic relay J2 and the coil of the alternating current contactor BZJ; a first normally closed contact of the electromagnetic relay J1 is connected with a door machine;
the UPS is respectively connected with the input end of the switch power supply T1 and the input end of the switch power supply T2;
a coil of a time delay relay SJJ is connected between two input ends of the switching power supply T1, and a first normally open contact of an electromagnetic relay J1 is connected between the UPS and the input end of the switching power supply T1; a first normally open contact of an alternating current contactor BZJ, a normally closed contact of a time delay relay SJJ, a diode and a brake coil are connected in series between the positive output end and the negative output end of the switching power supply T1;
an electric push rod circuit, a speed reducing motor circuit and a weighing device circuit are connected in parallel between the positive output end and the negative output end of the switching power supply T2;
the electric push rod circuit comprises a second normally closed contact of the electromagnetic relay J1, a power supply input end of the electric push rod 201 and a third normally closed contact of the electromagnetic relay J1 which are sequentially connected in series;
the speed reducing motor circuit comprises a second normally open contact of the alternating current contactor BZJ, a first normally closed contact of the electromagnetic relay J2, a speed reducing motor power supply input end and a second normally closed contact of the electromagnetic relay J2 which are sequentially connected in series;
the weighing device circuit is the power input end of the weighing device 8.
The utility model discloses a method of getting rid of poverty does:
trapped people in the car 14 open the protective cover and press the control button 10, the control system 7 controls the band-type brake 5 to release the brake and controls the electric push rod 201 to push the dragging device 3 so as to enable the driving wheel 303 to be abutted against the end wheel 4 of the main shaft, and controls the speed reduction motor 301 to drive the driving wheel 303 to drive the end wheel 4 of the main shaft to rotate forwards or backwards so as to drive the car 14 to move up and down; the forward rotation or reverse rotation of the main shaft end wheel 4 is determined by the weight of the trapped person in the car 14 measured by the weighing device 8 and the weight of the elevator counterweight, and when the control system 7 receives that the weight of the trapped person measured by the weighing device 8 is greater than the weight of the elevator counterweight, the control drive wheel 303 drives the main shaft end wheel 4 to rotate reversely, so that the car 14 descends; when the control system 7 receives that the weight of the trapped person measured by the weighing device 8 is less than the counterweight of the elevator, the driving wheel 303 is controlled to drive the main shaft end wheel 4 to rotate forwards, so that the lift car 14 ascends; when the car 14 runs to the leveling position, after the control system 7 receives a leveling signal output by the leveling induction sensor 1, the control system controls the band-type brake 5 to be switched on, controls the electric push rod 201 to pull the dragging device 3 so as to separate the driving wheel 303 from the main shaft end wheel 4, controls the speed reduction motor 301 to stop working, stops running the car 14, and controls the door motor 9 to open the door so as to realize self-rescue and escape of trapped people. The trapped person in the car 14 can press the control button 10 in a point-press mode, the car 14 runs and stops when the control button 10 is pressed once, the car 14 is pressed for multiple times until the control system 7 receives a leveling signal output by the leveling induction sensor 1, the car 14 runs to a leveling position, and the control system 7 controls the band-type brake 5 to be switched on.
The electrical schematic diagram of the PLC, the electrical schematic diagram of the switching power supply T1, and the electrical schematic diagram of the switching power supply T2 in this embodiment are respectively shown in fig. 3, 4, and 5, in fig. 3, FX2N is PLC, FM is buzzer, UPSN, UPSL respectively represent live and neutral lines of an uninterruptible power supply, ZQ1 and ZQ2 represent lead wires, and three digits such as 103 to 109, 111, 201 to 203 are used to represent wiring sites, where 104 and 103 are respectively connected to 24V positive and negative power supplies output by T2, X0 to X5 represent input points, Y0 to Y3 represent PLC output contacts, and are connected to external devices, such as J1, J2, and BZJ, through COM; in fig. 5, pins 1, 5 and 9 of the left J1 are respectively a normally closed contact, a normally open contact and a common end, and pins 2, 6 and 10 of the right J1 are respectively a normally closed contact, a normally open contact and a common end; pins 2, 4 and 6 of the left J2 are respectively a normally closed contact, a normally open contact and a common end, and pins 1, 3 and 5 of the right J2 are respectively a normally closed contact, a normally open contact and a common end; DCT means electric putter, DCD means reduction motor, ZZJ means load carrying device. The working principle of this embodiment is specifically:
when the elevator is lightly loaded, namely the weight of the trapped person measured by the weighing device 8 is smaller than the counterweight of the elevator, a signal of the control button 10 is fed back to the PLC, no signal is input to the PLC by the weighing device 8, so that the first normally closed contact, the second normally closed contact and the third normally closed contact of the electromagnetic relay J1 are all disconnected, the first normally open contact is closed, the first normally open contact and the second normally open contact of the alternating current contactor 19 are all closed, the delay relay SJJ coil is electrified to start timing, the 24V voltage of the switching power supply T2 is output to the electric push rod 201 and the reducing motor 301, the 110V voltage of the switching power supply T1 is output to the band-type brake coil, the band-type brake 5 is opened within the designated time, the reducing motor 301 starts to be driven in the forward direction, and when the designated time is exceeded, the delay relay SJJ normally closed contact is disconnected, so that the band-type brake 110V is automatically cut off; when a signal of the leveling induction sensor 1 is transmitted into the PLC, the coil of the electromagnetic relay J1 and the coil of the alternating current contactor BZJ are powered off, the speed reducing motor 301 stops rotating, the brake coil is powered off, the electric push rod 201 resets, the first output end of the PLC outputs a door opening signal Y0 after 1s, and the door 9 is opened through the first normally closed contact of the electromagnetic relay J1;
when the elevator is heavily loaded, namely the weight of the trapped person measured by the weighing device 8 is greater than the weight of the elevator, the signal of the control button 10 is fed back to the PLC, the triggering signal of the weighing device 8 is input to the PLC, the first normally closed contact, the second normally closed contact and the third normally closed contact of the electromagnetic relay J1 are all disconnected, the first normally open contact is closed, the second normally closed contact is closed, the first normally open contact and the second normally open contact of the electromagnetic relay J2 are all disconnected, the first normally open contact and the second normally open contact of the alternating current contactor BZJ are all closed, the delay relay SJJ coil is electrified to start timing, the 24v voltage of the switching power supply T2 is output to the electric push rod 201 and the reducing motor 301, and the 110v voltage of the switching power supply T1 is output to the band-type brake coil, the internal contracting brake 5 is opened within the designated time, the speed reducing motor 301 starts to drive reversely, and when the designated time is exceeded, the normally closed contact of the time delay relay SJJ is disconnected, so that the internal contracting brake 110v is automatically cut off; when the signal of leveling induction sensor 1 is transmitted into PLC, make electromagnetic relay J1 coil, electromagnetic relay J2 coil and ac contactor BZJ coil lose the electricity, make gear motor 301 stop rotatory, the power failure of band-type brake coil, electric putter 201 resets, PLC's the first output after 1s exports signal Y0 that opens the door, makes door machine 9 open the door through electromagnetic relay J1's first normally closed contact.
Claims (7)
1. The utility model provides a tow formula elevator trouble device of getting rid of poverty of saving oneself which characterized in that: the elevator traction machine comprises a flat bed induction sensor (1), a clutch device (2), a dragging device (3), a control system (7), a weighing device (8) and a shell (13), wherein the shell (13) is installed on one side of a main shaft end wheel (4) of an elevator traction machine, the shell (13) is respectively provided with the clutch device (2), the dragging device (3) and the control system (7), the flat bed induction sensor (1) and the weighing device (8) are respectively installed on a car (14), a control button (10) is arranged in the car (14), the flat bed induction sensor (1), the control button (10), the weighing device (8) and a door motor (9) of the elevator are all connected with the control system (7) through a traveling cable (11), and the control system (7) is connected with a band-type brake (5) of the elevator through a cable (6); the power source in the clutch device (2) and the power source in the dragging device (3) are respectively connected with a control system (7), the dragging device (3) is connected with the power source output end in the clutch device (2), an execution component in the dragging device (3) is connected with or separated from a main shaft end wheel (4) of an elevator through the power source drive in the clutch device (2), and drives the main shaft end wheel (4) to rotate forwards or backwards through the power source drive in the dragging device (3) when the execution component is connected with the main shaft end wheel (4) in an abutting mode, so that the lift car (14) is driven to lift.
2. The traction type elevator fault self-rescuing and escaping device as claimed in claim 1, wherein: the power source in the clutch device (2) is an electric push rod (201), the electric push rod (201) is installed on the shell (13), and the output end of the electric push rod is connected with the dragging device (3).
3. The traction type elevator fault self-rescuing and escaping device as claimed in claim 1, wherein: the clutch device (2) further comprises a guide mechanism (202), the guide mechanism (202) comprises two groups of guide plates (2021) which are arranged up and down, each group of guide plates (2021) is two, guide sliding grooves (2022) are formed in the opposite sides of each group of two guide plates (2021), and the dragging device (3) realizes guiding through the guide sliding grooves (2022) in the moving process.
4. The traction type elevator fault self-rescuing and escaping device as claimed in claim 1, wherein: the power source in the dragging device (3) is a speed reducing motor (301), the executing component in the dragging device (3) is a driving wheel (303), the output end of the speed reducing motor (301) is connected with the driving wheel (303), and the speed reducing motor (301) and the driving wheel (303) are driven to move through the power source in the clutch device (2).
5. The traction type elevator fault self-rescuing and escaping device as claimed in claim 4, wherein: the dragging device (3) further comprises a motor mounting frame (302), the motor mounting frame (302) is connected to a power source output end in the clutch device (2), the speed reducing motor (301) is fixed to the motor mounting frame (302), and one side, facing the spindle end wheel (4), of the driving wheel (303) is exposed out of the motor mounting frame (302).
6. The traction type elevator fault self-rescuing and escaping device as claimed in claim 1, wherein: the control system (7) comprises an Uninterruptible Power Supply (UPS), a Programmable Logic Controller (PLC), a switching power supply T1, a switching power supply T2, a time delay relay SJJ, an alternating current contactor BZJ, an electromagnetic relay J1 and an electromagnetic relay J2, wherein a power source in the clutch device (2) is an electric push rod (201), and a power source in the dragging device (3) is a speed reduction motor (301); uninterrupted power source UPS is switching power supply T1, switching power supply T2, time delay relay SJJ, ac contactor BZJ power supply respectively through supply cable (12), switching power supply T1 supplies power for band-type brake (5) of elevator, switching power supply T2 is PLC, electromagnetic relay J1, electromagnetic relay J2, electric putter (201) and gear motor (301) power supply respectively.
7. The traction type elevator fault self-rescuing and escaping device as claimed in claim 6, wherein: the PLC is respectively connected with the leveling induction sensor (1), the weighing device (8) and the control button (10), and the first, second, third and fourth output ends of the PLC are respectively connected with the first normally closed contact of the electromagnetic relay J1, the coil of the electromagnetic relay J1, the coil of the electromagnetic relay J2 and the coil of the alternating current contactor BZJ; a first normally closed contact of the electromagnetic relay J1 is connected with a door machine;
the UPS is respectively connected with the input end of the switch power supply T1 and the input end of the switch power supply T2;
a coil of a time delay relay SJJ is connected between two input ends of the switching power supply T1, and a first normally open contact of an electromagnetic relay J1 is connected between the UPS and the input end of the switching power supply T1; a first normally open contact of an alternating current contactor BZJ, a normally closed contact of a time delay relay SJJ, a diode and a brake coil are connected in series between the positive output end and the negative output end of the switching power supply T1;
an electric push rod circuit, a speed reducing motor circuit and a weighing device circuit are connected in parallel between the positive output end and the negative output end of the switching power supply T2;
the electric push rod circuit comprises a second normally closed contact of an electromagnetic relay J1, a power supply input end of an electric push rod (201) in the clutch device (2) and a third normally closed contact of an electromagnetic relay J1 which are sequentially connected in series;
the speed reducing motor circuit comprises a second normally open contact of the alternating current contactor BZJ, a first normally closed contact of the electromagnetic relay J2, a speed reducing motor power supply input end and a second normally closed contact of the electromagnetic relay J2 which are sequentially connected in series;
the weighing device circuit is a power input end of the weighing device (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120586083.2U CN214828143U (en) | 2021-03-23 | 2021-03-23 | Traction type elevator fault self-rescuing and escaping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120586083.2U CN214828143U (en) | 2021-03-23 | 2021-03-23 | Traction type elevator fault self-rescuing and escaping device |
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| Publication Number | Publication Date |
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| CN214828143U true CN214828143U (en) | 2021-11-23 |
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| CN202120586083.2U Active CN214828143U (en) | 2021-03-23 | 2021-03-23 | Traction type elevator fault self-rescuing and escaping device |
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| Country | Link |
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| CN (1) | CN214828143U (en) |
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- 2021-03-23 CN CN202120586083.2U patent/CN214828143U/en active Active
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