CN113307119A - Be applied to safety arrangement for maintenance of elevator pit - Google Patents
Be applied to safety arrangement for maintenance of elevator pit Download PDFInfo
- Publication number
- CN113307119A CN113307119A CN202110466758.4A CN202110466758A CN113307119A CN 113307119 A CN113307119 A CN 113307119A CN 202110466758 A CN202110466758 A CN 202110466758A CN 113307119 A CN113307119 A CN 113307119A
- Authority
- CN
- China
- Prior art keywords
- plate
- wall
- elevator
- fixedly connected
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- B66B5/0043—Devices enhancing safety during maintenance
- B66B5/005—Safety of maintenance personnel
Abstract
The invention discloses a safety protection device for overhauling a pit of an elevator, which comprises a shaft and an elevator guide rail, wherein a sliding groove is formed in the elevator guide rail, a moving plate is arranged in the sliding groove, the end part of the moving plate is fixedly connected with a guide plate, the end part of the guide plate is sleeved with a triangular plate in a sliding manner, a limiting groove is formed in the joint of the triangular plate and the guide plate, a telescopic spring is fixedly connected between the end part of the guide plate and the inner wall of the limiting groove, two limiting openings are formed in the inner wall of the sliding groove, and a limiting rod inserted in the limiting openings is fixedly connected to the outer wall of the moving plate. The triangular plate is ejected out to block and limit the elevator car when pit maintenance is carried out, and the baffle plate is driven to rotate to the downward movement of the elevator car to be shielded through the downward movement of the triangular plate when the triangular plate moves downward, so that the triangular plate is prevented from continuously sliding downward, personnel in the pit for maintenance are protected, and the personal safety of the maintainers is ensured.
Description
Technical Field
The invention relates to the technical field of elevator detection, in particular to a safety protection device for overhauling an elevator pit.
Background
The elevator is a permanent transportation device which serves a plurality of specific floors in a building, the lift car of the elevator runs on at least two rows of rigid rail motion devices which are vertical to the horizontal plane or have an inclination angle smaller than 15 degrees with a plumb line, and the elevator maintenance is a mode of timely handling problems in the elevator running process by workers to ensure the normal running of the elevator.
However, the following problems may occur during the maintenance of the elevator: the elevator is accidentally started and falls; elevator brake damage causes droppings; and the like, which can threaten the personal safety of maintenance personnel.
Through retrieval, publication number CN112408139A discloses a safety arrangement for overhaul that is applied to elevator pit relates to elevator and overhauls technical field. The elevator comprises an elevator shaft, an elevator body, a protection mechanism and a buffer mechanism, wherein the elevator body is arranged inside the elevator shaft, the protection mechanism is fixedly arranged outside the elevator shaft, and the buffer mechanism is arranged at the part of the protection mechanism, which is positioned in the elevator shaft;
CN210973448U discloses a safety protection system applied to shallow pit elevator maintenance, which is characterized by comprising a car blocking device and a door opening detection system, wherein the car blocking device comprises a base, a supporting top arm, a blocking top plate and a jacking mechanism, the upper side of the base is rotatably connected with the supporting top arm, and one end of the supporting top arm is rotatably connected with the blocking top plate;
all adopt automatically controlled mode to carry out the motion of baffle or barrier plate and shelter from the elevator body, and then protection maintenance personal safety, nevertheless the safety problem that the in-process outage of overhauing caused can not avoid, and how to confirm elevator pit safety more effectively is the problem that needs the solution at present urgently.
Disclosure of Invention
The invention aims to solve the problems in the background art and provides a safety protection device for overhauling an elevator pit.
In order to achieve the purpose, the invention adopts the following technical scheme:
a safety protection device for maintenance of an elevator pit comprises a shaft and an elevator guide rail, wherein the elevator guide rail is provided with a chute, a moving plate is arranged in the sliding groove, the end part of the moving plate is fixedly connected with a guide plate, the end part of the guide plate is slidably sleeved with a triangular plate, a limiting groove is arranged at the joint of the triangular plate and the guide plate, a telescopic spring is fixedly connected between the end part of the guide plate and the inner wall of the limiting groove, two limit openings are arranged on the inner wall of the sliding groove, a limit rod inserted in the limit openings is fixedly connected with the outer wall of the moving plate, a reset spring is fixedly connected between the limiting rod and the inner wall of the limiting opening, through grooves communicated with the inside of the sliding groove are formed in the outer walls of the two sides of the elevator guide rail, a moving rod is arranged in each through groove in a sliding mode, and one end, located in the sliding groove, of each moving rod is in contact with the inclined plane of the triangular plate;
the elevator guide rail comprises an elevator guide rail, a lifting plate, a first magnet plate, a second magnet plate, a pedal plate and a lifting spring, wherein the lifting plate is inserted into the lower side wall of the elevator guide rail in a sliding manner, the first magnet plate is fixed at the end part of the lifting plate, the second magnet plate is fixedly embedded in the movable plate, the magnetism of one opposite side of the first magnet plate and the second magnet plate is the same, the lower end of the lifting plate is fixedly connected with the pedal plate which is in sliding contact with the inner wall of the elevator shaft, and the lifting spring is fixedly connected between the lower side wall of the pedal plate and the lower side wall of the elevator shaft;
two rotating rods are installed on the upper side wall of the ladder well, a first gear is fixedly sleeved on the outer wall of the upper end of each rotating rod, a baffle is fixedly connected to the outer wall of the lower end of each rotating rod, the end of each moving rod is in contact with one of the first gears, and sawteeth meshed with the first gears are arranged on the outer wall of each moving rod.
Preferably, the adjustment tank has been seted up on the inner wall of terraced well, it is provided with the slider to slide in the adjustment tank, fixed mounting has the light on the outer wall of slider, the mounting groove has been seted up on the outer wall of slider, install the knob on the outer wall of slider, the tip of knob runs through and extends to the mounting groove in and fixedly connected with supports the piece, fixedly connected with chucking spring between the interior roof of last lateral wall and the mounting groove of support piece.
Preferably, be provided with the motor in the ladder shaft, be provided with the switch that is located the carriage release lever tip outside in the ladder shaft, the drive end fixedly connected with gear three of motor, gear two rather than meshing is installed in the outside of gear three, fixedly connected with wrapping post on the outer wall of gear two, the winding has wire rope on the outer wall of wrapping post, the outside of elevator guide rail still slides and is provided with the pinion rack, pinion rack and gear two and gear three-phase meshing.
Preferably, the third gear is an incomplete gear, and two sawtooth sections are symmetrically arranged on the outer wall of the third gear.
Preferably, the switch is a time delay switch.
Preferably, the side wall of the shaft is fixedly embedded with two bearings, and the two rotating rods are respectively and fixedly connected with the inner ring of one of the bearings.
Compared with the prior art, this be applied to safety arrangement for overhaul of elevator pit's advantage lies in:
1. the elevator car is provided with a lifting plate, a first magnet plate, a second magnet plate and a triangular plate, and a maintenance worker steps on the pedal after entering a pit to drive the lifting plate to slide downwards so that the first magnet plate and the second magnet plate are in an opposite state, and pushes the outer side of the triangular plate under the action of magnetic repulsion force so that the triangular plate protrudes out of the edge of a sliding rail to prevent the elevator car from moving downwards;
2. the elevator car is provided with a first gear, a moving rod, a rotating rod and a baffle, when the elevator car has a problem and slides downwards, a triangular plate is extruded to move downwards, the triangular plate extrudes the moving rod to move outwards, the first gear and the rotating rod are driven to rotate through meshing of sawteeth and the first gear, and then the baffle is driven to rotate inwards to the lower side of the elevator car, so that the elevator car is shielded, the elevator car is prevented from continuously sliding downwards, and personnel in the pit for maintenance are protected;
3. the gear II, the gear III, the toothed plate, the steel wire rope and the motor are arranged, when the moving rod moves outwards, the motor is triggered to work to drive the gear III to rotate, reciprocating forward and reverse rotation of the gear II is realized through meshing of the gear III, the gear III and the toothed plate, unwinding and winding of the steel wire rope are realized, namely reciprocating actions of unwinding and lifting of the elevator car are driven, and the problem that the steel wire rope and the elevator car are easily damaged due to rigid lifting caused by winding all the time is avoided;
4. the adjusting groove, the sliding block, the knob and the abutting block are arranged, the position of the illuminating lamp is adjusted through the sliding of the sliding block in the adjusting groove, the knob is rotated to enable the abutting block to move upwards and not abut against the inner wall of the adjusting groove, the knob is released after the sliding adjustment, the abutting block rotates downwards under the reverse elasticity of the clamping spring to abut against the inner wall of the adjusting groove, the fixing of the sliding block is completed, and the stability of the position of the illuminating lamp is guaranteed;
in conclusion, the triangular plate is ejected out to block and limit the elevator car when pit maintenance is carried out, and the baffle plate is driven to rotate to the downward movement of the elevator car to block the downward movement of the elevator car through the downward movement of the triangular plate when the elevator car moves downward, so that the elevator car is prevented from continuously sliding downward, personnel in maintenance in the pit are protected, and the personal safety of the maintenance personnel is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a safety protection device for overhaul applied to an elevator pit, which is provided by the invention;
fig. 2 is a schematic structural diagram of an elevator guide rail in a safety protection device for maintenance of an elevator pit, which is provided by the invention;
FIG. 3 is a schematic structural diagram of a lifting plate in a safety protection device for maintenance of an elevator pit, which is provided by the invention;
FIG. 4 is an enlarged view of the structure of portion A of FIG. 1;
FIG. 5 is a rear view of a slide block in the safety protection device for maintenance of an elevator pit according to the present invention;
fig. 6 is an enlarged view of a portion B of fig. 1.
In the figure: the elevator comprises a shaft 1, an elevator guide rail 2, a sliding groove 3, a pedal 4, a lifting spring 5, a lifting plate 6, a moving plate 7, a triangular plate 8, a guide plate 9, a through groove 10, a moving rod 11, a rotating rod 12, a gear wheel 13, a magnet plate 14, an adjusting groove 15, a slider 16, a lighting lamp 17, a knob 18, an installation groove 19, a butting block 20, a clamping spring 21, a toothed plate 22, a switch 23, a gear wheel 24, a gear wheel 25, a gear wheel III 26, a steel wire rope 27 and a baffle plate 27.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-6, a safety protection device for maintenance of an elevator pit comprises a shaft 1 and an elevator guide rail 2, an elevator car is slidably arranged on the elevator guide rail 2, a chute 3 is arranged on the elevator guide rail 2, a moving plate 7 is arranged in the chute 3, the end of the moving plate 7 is fixedly connected with a guide plate 9, the end of the guide plate 9 is slidably sleeved with a triangular plate 8, a limit groove is arranged at the joint of the triangular plate 8 and the guide plate 9, a telescopic spring is fixedly connected between the end of the guide plate 9 and the inner wall of the limit groove, the telescopic spring is stretched when the triangular plate 8 slides, the triangular plate 8 can move back and forth subsequently by the reverse elasticity of the telescopic spring, two limit openings are arranged on the inner wall of the chute 3, a limit rod inserted in the limit opening is fixedly connected to the outer wall of the moving plate 7, and a reset spring is fixedly connected between the limit rod and the inner wall of the limit opening, when the moving plate 7 moves, the limiting rod slides in the limiting opening, through grooves 10 communicated with the inside of the sliding groove 3 are formed in the outer walls of the two sides of the elevator guide rail 2, a moving rod 11 is arranged in each through groove 10 in a sliding mode, one end, located in the sliding groove 3, of each moving rod 11 is in contact with the inclined plane of the triangular plate 8, and the triangular plate 8 is located in the sliding groove 3 in a normal state, namely the elevator car can normally slide on the elevator guide rail 2;
furthermore, the triangle 8 is a regular triangle, and one end of the triangle 8 close to the lifting plate 6 is a tip end, and one end close to the guide plate 9 is a flat end.
A lifting plate 6 is inserted on the lower side wall of the elevator guide rail 2 in a sliding manner, a first magnet plate 14 is fixed at the end part of the lifting plate 6, a second magnet plate is fixedly embedded in a moving plate 7, the magnetism of the first magnet plate 14 is the same as that of the opposite side of the second magnet plate, a pedal 4 in sliding contact with the inner wall of the elevator shaft 1 is fixedly connected at the lower end of the lifting plate 6, a lifting spring 5 is fixedly connected between the lower side wall of the pedal 4 and the lower side wall of the elevator shaft 1, when a person enters a pit to maintain the elevator shaft 1, a maintenance worker steps on the pedal 4 to drive the lifting pedal 6 to slide downwards to extrude the lifting spring 5, after the lifting plate 6 moves downwards, the first magnet plate 14 and the second magnet plate are in a relative state, the guide plate 9 is pushed to move outwards by the magnetic repulsion force, the surface of the triangular plate 8 protrudes out of the chute 3, and the triangular plate 8 can play a role of resisting to the elevator car when the elevator car accidentally slides downwards, the elevator car is prevented from moving downwards, meanwhile, the elevator car can push the triangular plate 8 to move downwards, and the moving rod 11 can be extruded to move outwards through the contact of the moving rod 11 and the inclined surface of the triangular plate 8;
further, one end of the moving rod 11 close to the triangle 8 is arc-shaped.
Two rotating rods 12 are installed on the upper side wall of the elevator shaft 1, two bearings are fixedly embedded on the upper side wall of the elevator shaft 1, the two rotating rods 12 are fixedly connected with an inner ring of one of the bearings respectively, the bearings play a role in supporting and lubricating the rotating rods 12, a first gear 13 is fixedly sleeved on the upper end outer wall of each rotating rod 12, a baffle 27 is fixedly connected to the lower end outer wall of each rotating rod 12, the end portion of the moving rod 11 is in contact with one of the first gears 13 respectively, sawteeth meshed with the first gears 13 are arranged on the outer wall of the moving rod 11, when the moving rod 11 moves towards the outer side, the first gears 13 and the rotating rods 12 are driven to rotate through the sawteeth and the first gears 13, and then the baffle 27 is driven to rotate towards the inner side to the lower side of the elevator car, the elevator car is shielded, and is prevented from continuously sliding downwards, and personnel in pit for maintenance are protected.
A motor is arranged in the elevator shaft 1, a switch 23 positioned on the outer side of the end part of the moving rod 11 is arranged in the elevator shaft 1, the switch 23 is connected with the motor and an external power supply through a lead, the switch 23 is a delay switch which is automatically opened and closed after being opened for a period of time, a gear wheel three 25 is fixedly connected with a driving end of the motor, a gear wheel two 24 meshed with the gear wheel three 25 is arranged on the outer side of the gear wheel three 25, a winding post is fixedly connected onto the outer wall of the gear wheel two 24, a steel wire rope 26 is wound on the outer wall of the winding post, the steel wire rope 26 is connected with the upper side of the elevator car, a toothed plate 22 is also arranged on the outer side of the elevator guide rail 2 in a sliding manner, the toothed plate 22 is meshed with the gear wheel two 24 and the gear wheel three 25, the gear wheel three 25 is an incomplete gear, two saw tooth sections are symmetrically arranged on the outer wall of the gear wheel three, when the moving rod 11 moves towards the outer side, the switch 23 is pressed, at the moment, the motor is started to drive the gear wheel three 25 to rotate, at the beginning, the sawtooth section is only meshed with the second gear 24 and is not meshed with the toothed plate 22, at the moment, the third gear 25 drives the second gear 24 to rotate reversely, the second gear 24 drives the toothed plate 22 to move towards the right side, the third gear 25 continues to rotate and is meshed with the toothed plate 22 and is not meshed with the second gear 24 to drive the toothed plate 22 to move left, and the toothed plate 22 drives the second gear 24 to rotate positively, so that the reciprocating positive and negative rotation of the second gear 24 is realized, the unwinding and winding of the steel wire rope 26, namely the reciprocating action of driving the elevator car to unwind and lift is realized, and the problem that the steel wire rope 26 and the elevator car are easily damaged by rigid lifting caused by always winding is avoided.
Further, unless otherwise specifically stated or limited, the above-described fixed connection is to be understood in a broad sense, and may be, for example, welded, glued, or integrally formed as is conventional in the art.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. A safety protection device for maintenance applied to an elevator pit comprises a shaft (1) and an elevator guide rail (2), and is characterized in that a sliding groove (3) is formed in the elevator guide rail (2), a movable plate (7) is arranged in the sliding groove (3), a guide plate (9) is fixedly connected to the end of the movable plate (7), a triangular plate (8) is slidably sleeved on the end of the guide plate (9), a limiting groove is formed in the joint of the triangular plate (8) and the guide plate (9), a telescopic spring is fixedly connected between the end of the guide plate (9) and the inner wall of the limiting groove, two limiting openings are formed in the inner wall of the sliding groove (3), a limiting rod inserted in each limiting opening is fixedly connected to the outer wall of the movable plate (7), a reset spring is fixedly connected between each limiting rod and the inner wall of each limiting opening, through grooves (10) communicated with the inside of the sliding groove (3) are formed in the outer walls of two sides of the elevator guide rail (2), a moving rod (11) is slidably arranged in each through groove (10), and one end of each moving rod (11) positioned in each sliding groove (3) is in contact with the inclined surface of the triangular plate (8);
a lifting plate (6) is inserted into the lower side wall of the elevator guide rail (2) in a sliding manner, a first magnet plate (14) is fixed at the end part of the lifting plate (6), a second magnet plate is fixedly embedded in the moving plate (7), the magnetism of the opposite sides of the first magnet plate (14) and the second magnet plate is the same, a pedal (4) in sliding contact with the inner wall of the elevator shaft (1) is fixedly connected to the lower end of the lifting plate (6), and a lifting spring (5) is fixedly connected between the lower side wall of the pedal (4) and the lower side wall of the elevator shaft (1);
two bull sticks (12), every are installed to the last lateral wall of ladder well (1) equal fixed cover is equipped with gear (13), every on the upper end outer wall of bull stick (12) equal fixedly connected with baffle (27) on the lower extreme outer wall of bull stick (12), the tip of carriage release lever (11) contacts with one of them gear (13) respectively, and is provided with the sawtooth with gear (13) engaged with on the outer wall of carriage release lever (11).
2. The safety protection device for overhauling of elevator pit according to claim 1, characterized in that the inner wall of the elevator shaft (1) is provided with an adjusting groove (15), the adjusting groove (15) is internally provided with a sliding block (16) in a sliding manner, the outer wall of the sliding block (16) is fixedly provided with a lighting lamp (17), the outer wall of the sliding block (16) is provided with a mounting groove (19), the outer wall of the sliding block (16) is provided with a knob (18), the end of the knob (18) penetrates through the mounting groove (19) and extends into the mounting groove (19) and is fixedly connected with a resisting block (20), and a clamping spring (21) is fixedly connected between the upper side wall of the resisting block (20) and the inner top wall of the mounting groove (19).
3. The safety protection device for overhauling of elevator pit according to claim 1, wherein a motor is arranged in the shaft (1), a switch (23) positioned outside the end of the moving rod (11) is arranged in the shaft (1), a gear three (25) is fixedly connected to the driving end of the motor, a gear two (24) meshed with the gear three (25) is installed outside the gear three (25), a winding post is fixedly connected to the outer wall of the gear two (24), a steel wire rope (26) is wound on the outer wall of the winding post, a toothed plate (22) is further arranged outside the elevator guide rail (2) in a sliding manner, and the toothed plate (22) is meshed with the gear two (24) and the gear three (25).
4. The safety protection device for overhauling applied to the bottom pit of the elevator is characterized in that the gear III (25) is an incomplete gear, and two sawtooth sections are symmetrically arranged on the outer wall of the gear III.
5. A safety arrangement for overhaul applied to an elevator pit according to claim 3, characterized in that the switch (23) is a time delay switch.
6. The safety protection device for overhauling applied to elevator pit according to claim 1, characterized in that two bearings are fixedly embedded in the upper side wall of the shaft (1), and two rotating rods (12) are respectively and fixedly connected with the inner ring of one of the bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110466758.4A CN113307119B (en) | 2021-04-28 | 2021-04-28 | Be applied to safety arrangement for maintenance of elevator pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110466758.4A CN113307119B (en) | 2021-04-28 | 2021-04-28 | Be applied to safety arrangement for maintenance of elevator pit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113307119A true CN113307119A (en) | 2021-08-27 |
| CN113307119B CN113307119B (en) | 2022-08-16 |
Family
ID=77371139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110466758.4A Active CN113307119B (en) | 2021-04-28 | 2021-04-28 | Be applied to safety arrangement for maintenance of elevator pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113307119B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115231400A (en) * | 2022-07-25 | 2022-10-25 | 沈阳工业大学 | Vertical elevator stop position detection device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103145016A (en) * | 2013-03-20 | 2013-06-12 | 苏州台菱电梯有限公司 | Automatic anti-falling prevention device for lift car |
| CN205772585U (en) * | 2016-05-19 | 2016-12-07 | 江苏立达电梯有限公司 | Elevator pit maintenance personal safety protector |
| CN208814432U (en) * | 2018-08-07 | 2019-05-03 | 杭州西奥电梯有限公司 | Elevator reparing safety device |
| CN209635667U (en) * | 2019-01-21 | 2019-11-15 | 北京联合通力电梯有限公司 | A kind of elevator pit maintenance protective device |
| CN211338408U (en) * | 2020-05-26 | 2020-08-25 | 三亚森奥电梯有限公司 | Buffer device for maintenance of elevator pit |
-
2021
- 2021-04-28 CN CN202110466758.4A patent/CN113307119B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103145016A (en) * | 2013-03-20 | 2013-06-12 | 苏州台菱电梯有限公司 | Automatic anti-falling prevention device for lift car |
| CN205772585U (en) * | 2016-05-19 | 2016-12-07 | 江苏立达电梯有限公司 | Elevator pit maintenance personal safety protector |
| CN208814432U (en) * | 2018-08-07 | 2019-05-03 | 杭州西奥电梯有限公司 | Elevator reparing safety device |
| CN209635667U (en) * | 2019-01-21 | 2019-11-15 | 北京联合通力电梯有限公司 | A kind of elevator pit maintenance protective device |
| CN211338408U (en) * | 2020-05-26 | 2020-08-25 | 三亚森奥电梯有限公司 | Buffer device for maintenance of elevator pit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115231400A (en) * | 2022-07-25 | 2022-10-25 | 沈阳工业大学 | Vertical elevator stop position detection device |
| CN115231400B (en) * | 2022-07-25 | 2023-07-21 | 沈阳工业大学 | Vertical elevator stop position detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113307119B (en) | 2022-08-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4275984B2 (en) | Platform simple movable fence | |
| CN113307119B (en) | Be applied to safety arrangement for maintenance of elevator pit | |
| JP2004268634A (en) | Lifting type platform movable fence | |
| CN212582433U (en) | Municipal bridge engineering construction platform | |
| CN1071701C (en) | Elevator safety system | |
| CN219327294U (en) | Platform lifting device | |
| CN108979225B (en) | Double-deck parking equipment | |
| CN111747271A (en) | Steel cable winding device for elevator maintenance | |
| JP2620123B2 (en) | Temporary lifting equipment for construction work | |
| CN114590755A (en) | Energy-saving lifting platform for construction with safeguard function | |
| CN115321321B (en) | Construction elevator cage and automatic cage door | |
| CN111115419A (en) | Elevator car convenient to maintenance | |
| CN111092391A (en) | Auxiliary device is used in transformer substation's installation | |
| CN219525985U (en) | Anti-falling mechanism of construction elevator | |
| KR940004908B1 (en) | Parking apparatus | |
| CN215671364U (en) | Stage system and overturning platform for performance | |
| CN216945734U (en) | Anti-falling safety device of construction elevator for building | |
| CN218491399U (en) | Climbing type elevator installation device | |
| CN219045143U (en) | Automatic locking structure of plane gate | |
| CN218778688U (en) | Tunnel lining trolley material lifting device | |
| CN115070490B (en) | Large cylinder body overturning mechanism in marine diesel engine | |
| CN220012061U (en) | House building lifting device | |
| CN219585604U (en) | Limiting device with anti-falling function | |
| CN214456612U (en) | Photoelectric type construction elevator barrier intercepting device | |
| CN215807362U (en) | Transformer substation operation monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 10, Baifo South Road, Zhengdong New District, Zhengzhou City, Henan Province, 450000 Patentee after: Zhao Xiaowen Address before: 261000 Building 2, Baoding garden, Xueyuan street, Kuiwen District, Weifang City, Shandong Province Patentee before: Zhao Xiaowen |