CN210366460U - Elevator locking device without machine room - Google Patents
Elevator locking device without machine room Download PDFInfo
- Publication number
- CN210366460U CN210366460U CN201921186205.8U CN201921186205U CN210366460U CN 210366460 U CN210366460 U CN 210366460U CN 201921186205 U CN201921186205 U CN 201921186205U CN 210366460 U CN210366460 U CN 210366460U
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- Prior art keywords
- elevator
- locking
- car
- lock
- ladder
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- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 28
- 230000009471 action Effects 0.000 claims description 11
- 125000003003 spiro group Chemical group 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 21
- 238000009434 installation Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 238000006073 displacement reaction Methods 0.000 abstract description 6
- 238000003466 welding Methods 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model discloses a no computer lab elevator lock terraced device sets up on the car with the guide rail cardboard looks block on the elevator well guide rail when car takes place to remove in order to prevent that the elevator from overhauing, include: at least two lock terraced devices set up respectively the car both sides are followed the accessible lift of car, lock terraced device is equipped with the rigid coupling the lock ladder base of car, install mobilizable lock ladder axle on the lock ladder base, lock ladder axle is in carry out lateral shifting on the lock ladder base and make the one end of lock ladder axle stretch out with guide rail cardboard looks block is in order to lock the car. This device adopts the car as overhauing the platform, can reduce the requirement to the building space greatly, can prevent simultaneously that the car from taking place the displacement in the maintenance process, and installation convenient operation can guarantee not to conform to the standard because of the field weld causes.
Description
Technical Field
The utility model relates to a technical field in the aspect of the no computer lab elevator, especially a no computer lab elevator lock ladder device.
Background
Because of the limitation of the height of the building, a lot of buildings can not be designed as elevators with machine rooms, so that more and more elevators without machine rooms are provided, but the maintenance platform without machine rooms also becomes a great problem designed by various manufacturers, if the maintenance platform is fixed in the hoistway, the space of the elevator hoistway is required to be large, the building space is wasted, and in addition, the related requirements of the space of the moving car are also met. If the car is used as the maintenance platform during maintenance, the requirement on the building space can be greatly reduced, the interference with the car is not required to be considered, and the car is used as the maintenance platform and must be provided with a car locking device to prevent the car from displacing in the maintenance process.
The lock ladder device of present basis is mostly the installation scene according to actual conditions welding, and the mode of installation is diversified, still needs field weld, and the process is complicated and pleasing to the eye, if not conform to the standard after the welding, will change quite difficultly.
SUMMERY OF THE UTILITY MODEL
Objects of the invention
The utility model aims at providing a no computer lab elevator lock ladder device, the device adopt the car as overhauing the platform, can reduce the requirement to the building space greatly, can prevent simultaneously that the car from taking place the displacement in the maintenance process, and install convenient operation, can guarantee not to conform to the standard because of the field weld causes.
(II) technical scheme
In order to realize the purpose, the utility model discloses a technical scheme:
the utility model provides a no computer lab elevator locking ladder device, sets up on the car with the lift well guide rail on the guide rail looks block when the car takes place to remove in order to prevent that the elevator from overhauing, include:
at least two lock terraced devices set up respectively the car both sides are followed the accessible lift of car, lock terraced device is equipped with the rigid coupling the lock ladder base of car, install mobilizable lock ladder axle on the lock ladder base, lock ladder axle is in carry out lateral shifting on the lock ladder base and make the one end of lock ladder axle stretch out with guide rail cardboard looks block is in order to lock the car.
Furthermore, the locking shaft is connected with a locking shaft detection switch for detecting the action of the locking shaft, the locking shaft detection switch is connected to an elevator safety loop for controlling the operation of the elevator, and the locking shaft detection switch automatically disconnects the elevator safety loop to stop the operation of the elevator after detecting that the locking shaft acts to lock the car;
and when the locking shaft detection switch detects that one end of the locking shaft extending out retracts and is separated from the guide rail clamping plate and does not lock the car, the elevator safety loop is operated to conduct the elevator to enable the elevator to normally run.
Furthermore, the locking ladder shaft comprises a movable part and an extension part, the movable part is a control end and drives the extension part to move transversely, and the extension part is one end clamped with the guide rail clamping plate;
an inclined step is arranged between the movable part and the extension part, and the tail end of the movable part is connected to the extension part in a gradually-reduced shape.
Furthermore, the lock shaft detection switch is provided with a rotating wheel which is abutted to the movable part and rotates along with the movement of the movable part;
when the locking shaft moves forwards to be clamped with the guide rail clamping plate, the rotating wheel abutted to the inclined step rotates reversely to touch the movable part so as to trigger the locking shaft detection switch 13 to act to cut off the elevator safety loop;
when the movable part moves reversely to be separated from the guide rail clamping plate, the rotating wheel abutted to the movable part rotates forwards to touch the inclined step, and the elevator safety loop is switched on by the action of the elevator locking shaft detection switch.
Furthermore, the lock shaft detection switch is a manual reset switch, so that the elevator safety loop is switched on through manual reset.
Further, the locking ladder shaft is a manual locking ladder component, so that the locking ladder shaft is manually controlled to move.
Furthermore, the locking ladder shaft is connected with a locking ladder shaft locking guide seat for preventing misoperation.
Furthermore, lock ladder axle locking guide holder is equipped with the I-shaped guide slot.
Furthermore, the guide rail clamping plate is provided with a locking elevator shaft clamping position for the extension part to be inserted so as to lock the car.
Further, the car is equipped with a horizontal sedan-chair frame upper beam, the equal vertical sedan-chair frame stand of connecting in both sides of sedan-chair frame upper beam, the top spiro union of sedan-chair frame stand to the both ends of sedan-chair frame upper beam, the upper portion of locking ladder base with sedan-chair frame upper beam is hugged closely, the locking ladder base corresponds one side spiro union that the locking ladder axle stretches out car one end is in on the sedan-chair frame stand.
(III) advantageous effects
The utility model discloses compare produced profitable technological effect with the background art:
the utility model adopts the technical scheme to provide a machine room free elevator locking device, which prevents the elevator car from displacing in the maintenance process by arranging the locking elevator shaft on the elevator car to perform transverse displacement and be clamped with the guide rail clamping plate on the elevator well guide rail; the device adopts the lift car as an overhauling platform, can greatly reduce the requirement on building space, and does not need to consider the interference with the lift car; meanwhile, the device is arranged at the lower part of the upper beam, is simultaneously fixed through the bolts connected with the car frame upright posts by the upper beam, is tightly attached to the upper beam at the upper part, is convenient to install and operate, and can ensure that the device is not in line with the standard due to field welding. The novel water-saving device has the characteristics of scientific structure, reasonable design, economy, practicability, safety, environmental protection, reliability, firmness and long service life. Therefore, the novel electric heating furnace is a product with equal superior technical, practical and economic properties.
Drawings
Fig. 1 is a schematic structural view of a locking device of a machine room-less elevator according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an elevator locking device in elevator maintenance according to an embodiment of the present invention;
fig. 3 is a schematic structural view of the elevator locking device when the elevator is not maintained according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a rail clamp according to an embodiment of the present invention;
fig. 5 is a schematic view illustrating the installation of the ladder locking device on the car according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a locking device for elevator maintenance according to another embodiment of the present invention;
fig. 7 is a schematic structural view of an elevator locking device in the case of non-maintenance of an elevator according to another embodiment of the present invention.
Reference numerals:
locking ladder device 1, locking ladder base 11, locking ladder axle 12, movable part 121, extension 122, slope step 123, locking ladder axle detection switch 13, runner 131, locking ladder axle locking guide 14, car 2, car frame upper beam 21, car frame stand 22, guide rail cardboard 3, locking ladder axle screens 31, the sign indicating number 32 is pressed to the guide rail, elevator guide rail 33, car frame connecting screw 4, car frame reinforcing plate 5.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout.
In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.
Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "at least" means one or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected", if any, are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
In the present application, unless otherwise specified or limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.
The technical solution and the advantages of the present invention will be more clear and clear by further describing the embodiments of the present invention with reference to the drawings of the specification. The embodiments described below are exemplary and are intended to be illustrative of the present invention, but should not be construed as limiting the invention.
If adopt the car as overhauing the platform during maintenance, can reduce the requirement to the building space greatly, also need not to consider the interference with the car, and adopt the car as overhauing the platform and must be equipped with car locking ladder device, in order to prevent that the car from taking place the displacement in the maintenance process, because the locking ladder device of present basis is mostly the installation scene according to actual conditions welding, the mode of installation is various, still need field weld, the process is complicated and pleasing to the eye, if not conform to the standard after the welding, it is fairly difficult to change. Therefore, the utility model provides a no computer lab elevator lock ladder device, the device install in the upper beam lower part, and the bolt of being connected through upper beam and sedan-chair frame stand is fixed simultaneously, and upper portion is hugged closely with the upper beam, and installation convenient operation can guarantee not to be conform to the standard because of the field weld causes.
As shown in fig. 1-7, in this embodiment, a preferable elevator locking device for a machine room-less elevator is provided, which is disposed on a car and is engaged with a rail clamp plate on a guide rail of an elevator shaft to prevent the car from moving during elevator maintenance, and includes: at least two lock terraced devices 1, two lock terraced devices 1 set up respectively in 2 both sides of car and follow car 2 and go up and down without obstacles, lock terraced device 1 is equipped with lock terraced base 11 of rigid coupling car 2, installs mobilizable lock terraced axle 12 on the lock terraced base 11, lock terraced axle 12 and carry out lateral shifting on lock terraced base 11 and make the one end lateral shifting of lock terraced axle 12 to block with 3 looks blocks of guide rail cardboard in order to lock car 2. The utility model discloses stretch out through lock ladder shaft 12 when elevator maintenance and guide rail cardboard 3 cooperation, prevent that car 2 from taking place the displacement, lock ladder shaft 12 retraction and guide rail cardboard 3 separation when elevator non-maintenance, do not influence car 2 and remove to the realization prevents that the car from taking place the displacement in the maintenance process, adopts the car as overhauing the platform when the maintenance, can reduce the requirement to building space greatly, also need not to consider the interference with the car.
In some embodiments of the utility model, the locking elevator shaft 12 is connected with a locking elevator shaft detection switch 13 for detecting the action of the locking elevator shaft, the locking elevator shaft detection switch 13 is connected into an elevator safety loop for controlling the operation of the elevator, and after the locking elevator shaft detection switch 13 detects the action of the locking elevator shaft 12 to lock the elevator car 2, the elevator safety loop is automatically disconnected to stop the operation of the elevator; when the locking shaft detection switch 13 detects that the extended end of the locking shaft 12 retracts to be separated from the guide rail clamping plate 3 and does not lock the car 2, the elevator safety loop is conducted by action to enable the elevator to normally run.
Specifically, in some embodiments, the locking shaft 12 includes a movable portion 121 and an extending portion 122, the movable portion 121 is a control end, and drives the extending portion 122 to move laterally, the extending portion 122 is one end of the engaging rail fastening plate 3, an inclined step 123 is disposed between the movable portion 121 and the extending portion 122, the inclined step 123 is connected to a head end of the extending portion 122 in a linear tapered manner, where the upper and lower edges of the tail end of the movable portion 121 are inclined in opposite directions, and the tail end of the extending portion 122 is used for engaging the rail fastening plate 3.
In the above disclosed embodiment, preferably, the locking step shaft detection switch 13 may be provided at the upper or lower end of the locking step shaft 12. Specifically, lock ladder shaft detection switch 13 top is equipped with runner 131, and runner 131 butts to the lower limb or the top edge of locking ladder shaft 12 and rotates along with the removal of locking ladder shaft 12, and is specific: as shown in fig. 2, when the locking shaft 12 moves forward to engage with the rail card 3, the rotating wheel 131 abutting against the inclined step 123 rotates reversely to touch the movable portion 121, that is, the rotating wheel 131 rotates along the direction from the inclined step 123 to the movable portion 121, so as to trigger the locking shaft detection switch 13 to operate to cut off the elevator safety loop; as shown in fig. 3, when the movable portion 121 moves in the reverse direction to disengage from the rail card 3, the turning wheel 131 abutting on the movable portion 121 rotates in the forward direction to touch the inclined step 123, that is, the turning wheel 131 rotates in the direction from the movable portion 121 to the inclined step 123, and the elevator safety circuit is turned on by the operation of the locking shaft detection switch 13.
In the utility model, in some embodiments, the locking ladder shaft 12 can be a manual locking ladder component, the locking ladder shaft 12 is manually operated to move, the locking ladder shaft 12 can transversely displace under the action of external force such as manpower, specifically, the locking ladder shaft 12 is manually extended out during elevator maintenance, and the locking ladder shaft 12 is matched with the guide rail clamping plate 3 to prevent the car 2 from displacing; when the elevator is not maintained, the elevator locking shaft 12 retracts to be separated from the guide rail clamping plate 3, and the movement of the car 2 is not influenced. In addition, lock shaft detection switch 13 is the manual reset switch, switches on the elevator safety circuit with manual reset, carries out the action of resetting in order to detect the action of locking ladder shaft 12 through the exogenic action: specifically, when the locking shaft 12 is manually extended, the locking shaft detection switch 13 acts to disconnect the elevator safety loop, and the elevator cannot run through electrical control; only when the locking shaft 12 is manually retracted and the locking shaft detection switch 13 is manually reset, the elevator safety loop can be conducted, and the elevator can run.
As shown in fig. 1-3, the locking ladder shaft 12 is connected with a locking ladder shaft stop guide seat 14 for preventing misoperation, so as to prevent the misoperation. Preferably, the locking ladder shaft locking guide seat 14 is provided with an I-shaped guide groove, so that the left-right symmetrical installation of the locking ladder shaft 12 is not affected.
In some embodiments, as shown in fig. 4, the rail clamping plate 3 is provided with a locking shaft clamping position 31 matched with the locking shaft 12, and the locking shaft clamping position is used for inserting the extension part to lock the car 2. Specifically, as shown in fig. 4, the guide rail clamping plates 3 are fixed on the elevator guide rails 33 through the guide rail pressing codes 32, and in the disclosed embodiment, the guide rail clamping plates 3 are provided with a plurality of locking positions to realize that the elevator locking device 1 is in different elevator locking positions in an elevator shaft, so that the convenience of maintenance is better ensured.
As shown in fig. 5, in this embodiment, the locking ladder device 1 is disposed on the upper portion of the car 2, the car 2 is provided with a horizontal car frame upper beam 21, two sides of the car frame upper beam 21 are both vertically connected with a car frame upright column 22, in some embodiments, as shown in fig. 2 and 3, the car frame upper beam 21 is disposed to be screwed with the car frame upright column 22 and the car frame connecting screw 4, specifically, the top of the car frame upright column 22 is screwed to two ends of the car frame upper beam 11, in some embodiments, as shown in fig. 2 and 3, the locking ladder base 11 is screwed with the car frame upright column 22 through the car frame connecting screw 4, specifically, the upper portion of the locking ladder base 11 is tightly attached to the car frame upper beam 21, and one side of the locking ladder base 11, corresponding to one end of the locking ladder shaft 12, is screwed to the car frame upright column 22. Furthermore, add sedan-chair frame reinforcing plate 5 between sedan-chair frame entablature 21 and sedan-chair frame stand 22, improvement joint strength that can be better, sedan-chair frame reinforcing plate 5 can set up in the upper strata of lock ladder base 11 or the lower floor of lock ladder base 11 in order to connect between sedan-chair frame entablature 21 and sedan-chair frame stand 22. From this, the utility model discloses an in the embodiment 1 installation convenient operation of lock ladder device can guarantee not to cause because of the field weld and be not conform to the beneficial effect of standard.
To sum up, the utility model provides a no computer lab elevator lock ladder device in the disclosed embodiment, the device install in the upper beam lower part, and the bolt of being connected through upper beam and sedan-chair frame stand is fixed simultaneously, and upper portion is hugged closely with the upper beam, and installation convenient operation can guarantee not to be conform to the standard because of the field weld causes. The novel water-saving device has the characteristics of scientific structure, reasonable design, economy, practicability, safety, environmental protection, reliability, firmness and long service life. Therefore, the novel electric heating furnace is a product with equal superior technical, practical and economic properties.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. The utility model provides a no computer lab elevator locking ladder device, sets up on the car with the lift well guide rail on the guide rail looks block when the car takes place to remove in order to prevent that the elevator from overhauing, a serial communication port, include:
at least two lock terraced devices set up respectively the car both sides are followed the accessible lift of car, lock terraced device is equipped with the rigid coupling the lock ladder base of car, install mobilizable lock ladder axle on the lock ladder base, lock ladder axle is in carry out lateral shifting on the lock ladder base and make the one end of lock ladder axle stretch out with guide rail cardboard looks block is in order to lock the car.
2. The elevator locking device for the machine room-less elevator according to claim 1, wherein: the locking shaft is connected with a locking shaft detection switch for detecting the action of the locking shaft, the locking shaft detection switch is connected into an elevator safety loop for controlling the operation of the elevator, and the locking shaft detection switch automatically disconnects the elevator safety loop to stop the operation of the elevator after detecting that the locking shaft acts to lock the elevator car;
and when the locking shaft detection switch detects that one end of the locking shaft extending out retracts and is separated from the guide rail clamping plate and does not lock the car, the elevator safety loop is operated to conduct the elevator to enable the elevator to normally run.
3. The elevator locking device for the elevator without the machine room according to claim 2, wherein: the locking ladder shaft comprises a movable part and an extension part, the movable part is a control end and drives the extension part to transversely move, and the extension part is one end clamped with the guide rail clamping plate;
an inclined step is arranged between the movable part and the extension part, and the tail end of the movable part is connected to the extension part in a gradually-reduced shape.
4. The elevator locking device for the elevator without the machine room according to claim 3, wherein: the lock shaft detection switch is provided with a rotating wheel which is abutted to the movable part and rotates along with the movement of the movable part;
when the locking shaft moves forwards to be clamped with the guide rail clamping plate, the rotating wheel which is abutted against the inclined step rotates reversely to touch the movable part so as to trigger the locking shaft detection switch to act to cut off the elevator safety loop;
when the movable part moves reversely to be separated from the guide rail clamping plate, the rotating wheel abutted to the movable part rotates forwards to touch the inclined step, and the elevator safety loop is switched on by the action of the elevator locking shaft detection switch.
5. The elevator locking device for the elevator without the machine room according to claim 4, wherein: the elevator locking shaft detection switch is a manual reset switch, and the elevator safety loop is switched on through manual reset.
6. The elevator locking device for the elevator without the machine room according to claim 5, wherein: the locking ladder shaft is a manual locking ladder component, and is manually controlled to move.
7. The elevator locking device for the elevator without the machine room of claim 6, wherein: the locking ladder shaft is connected with a locking ladder shaft locking guide seat for preventing misoperation.
8. The elevator locking device for the elevator without the machine room according to claim 7, wherein: the locking ladder shaft locking guide seat is provided with an I-shaped guide groove.
9. The elevator locking device for the elevator without the machine room according to claim 8, wherein: the guide rail clamping plate is provided with a locking elevator shaft clamping position for the extension part to be inserted to lock the car.
10. The elevator locking device for the elevator without the machine room of claim 9, wherein: the car is equipped with a horizontal sedan-chair frame upper beam, the equal vertical sedan-chair frame stand of connecting in both sides of sedan-chair frame upper beam, the top spiro union of sedan-chair frame stand to the both ends of sedan-chair frame upper beam, the upper portion of locking ladder base with the sedan-chair frame upper beam is hugged closely, the locking ladder base corresponds one side spiro union that the locking ladder axle stretches out car one end is in on the sedan-chair frame stand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921186205.8U CN210366460U (en) | 2019-07-25 | 2019-07-25 | Elevator locking device without machine room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921186205.8U CN210366460U (en) | 2019-07-25 | 2019-07-25 | Elevator locking device without machine room |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210366460U true CN210366460U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921186205.8U Expired - Fee Related CN210366460U (en) | 2019-07-25 | 2019-07-25 | Elevator locking device without machine room |
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| Country | Link |
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| CN (1) | CN210366460U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113581963A (en) * | 2021-08-12 | 2021-11-02 | 广东奥菱电梯有限公司 | Elevator lock ladder device |
-
2019
- 2019-07-25 CN CN201921186205.8U patent/CN210366460U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113581963A (en) * | 2021-08-12 | 2021-11-02 | 广东奥菱电梯有限公司 | Elevator lock ladder device |
| CN113581963B (en) * | 2021-08-12 | 2023-03-03 | 广东奥菱电梯有限公司 | Elevator lock ladder device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200421 |