CN107601222B - Car self-propelled elevator and control method thereof - Google Patents
Car self-propelled elevator and control method thereof Download PDFInfo
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- CN107601222B CN107601222B CN201710875580.2A CN201710875580A CN107601222B CN 107601222 B CN107601222 B CN 107601222B CN 201710875580 A CN201710875580 A CN 201710875580A CN 107601222 B CN107601222 B CN 107601222B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
- B66B9/04—Kinds or types of lifts in, or associated with, buildings or other structures actuated pneumatically or hydraulically
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- Automation & Control Theory (AREA)
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Abstract
The invention discloses a car self-propelled elevator and a control method thereof, wherein the elevator comprises the following steps: the device comprises a steel wire rope, a gravity self-locking device, an upper synchronous frame, a lower synchronous frame and a lifting hydraulic rod; the upper end and the lower end of the steel wire rope are respectively fixedly connected with the top and the bottom of the elevator shaft; the gravity self-locking device is arranged on the steel wire rope and is in linkage fit with the lift car; the upper synchronous frame is arranged above the lift car; the lower synchronous frame is arranged below the lift car; the lifting hydraulic rods are symmetrically arranged above and below the lift car, the upper lifting hydraulic rod is connected with the upper part of the upper synchronous frame and the upper part of the lift car, and the lower lifting hydraulic rod is connected with the lower synchronous frame and the lower part of the lift car; therefore, the car self-propelled elevator does not need a counterweight device, and the bearing capacity of the steel wire rope is greatly reduced; in the lift car lifting movement process, the upper end and the lower end of the steel wire rope are fixed; thereby reducing overload damage and fatigue damage of the steel wire rope and prolonging the service life of the elevator.
Description
Technical Field
The invention relates to a car self-propelled elevator and a control method thereof.
Background
A walking escalator commonly used in markets and a car elevator commonly used in residential buildings. Among them, the car elevator is most common in life, and the elevator accidents caused by exposure are mostly occurred in the elevator.
Current car formula elevator mainly includes the stopper, the buffer, safety tongs, the overspeed governor, the elevator shaft, drag the motor, drag wire rope, the car guide rail, the car, to heavy guide rail, to heavy device and so on, car formula elevator drags the both ends of drawing wire rope and is being connected with car and to heavy device respectively, and drags the wire rope winding on dragging wheel and leading wheel, drag the motor and drive after the reduction gear speed change and drag the wheel rotation, lean on dragging the rope and drag the traction force that the friction of wheel produced, realize the car and to heavy elevating movement, reach the transportation purpose.
In the existing car elevator, in the lifting motion process of a car, on one hand, a steel wire rope needs to be dragged to slide up and down, the steel wire rope is bent around a traction wheel, a guide wheel and a diversion wheel in a one-way or alternating mode, the steel wire rope also bears higher specific pressure in a rope groove, and fatigue damage is easy to generate; on the other hand, the dragging wire rope is required to bear the weight of the car and the counterweight, so that overload damage is easily caused, and the service life of the elevator is greatly influenced.
Disclosure of Invention
The invention provides a car self-propelled elevator and a control method thereof for solving the problems, a counterweight device is not needed, and the bearing capacity of a steel wire rope is greatly reduced; in the lift car lifting movement process, the upper end and the lower end of the steel wire rope are fixed; thereby reducing overload damage and fatigue damage of the steel wire rope and prolonging the service life of the elevator.
In order to realize the purpose, the invention adopts the technical scheme that:
a car self-propelled elevator, comprising:
the elevator car comprises a car body (10), steel wire ropes (21) and a lifting mechanism, wherein the steel wire ropes (21) comprise two or more than two steel wire ropes which are symmetrically arranged on two sides of the car body (10), the upper ends and the lower ends of the steel wire ropes (21) are fixedly connected with the top and the bottom of an elevator shaft (20) respectively, and the car body (10) performs lifting motion along the steel wire ropes (21);
the gravity self-locking device (40) is arranged on the steel wire rope (21) and is in linkage fit with the car (10) so as to lock and position the steel wire rope (21) by utilizing the weight of the car (10);
an upper synchronizing frame (50) disposed above the car (10);
a lower synchronizing frame (60) provided below the car (10);
the lift hydraulic stem (30), it includes two and above and the symmetry sets up the top and the below of car (10), the fixed setting of one end of the lift hydraulic stem (30) of top goes up synchronous frame (50) and the fixed setting of the other end is in the upper portion of car (10), the fixed setting of one end of the lift hydraulic stem (30) of below is in synchronous frame (60) and the fixed setting of the other end are in the lower part of car (10).
Preferably, the steel wire ropes (21) comprise four or more steel wire ropes, and are symmetrically arranged at the front side and the rear side of the lift car (10), and/or are symmetrically arranged at the left side and the right side of the lift car (10).
Preferably, the gravity self-locking device (40) comprises one or more groups, each group comprises two or more rollers (41), and the rollers (41) are symmetrically arranged on two sides of the steel wire rope (21); when the steel wire rope is in an unlocked state, the distance between the rollers (41) on the two sides is larger than the outer diameter of the steel wire rope (21); in the locking state, the rollers (41) on the two sides move along a preset track until the distance between the rollers is smaller than the outer diameter of the steel wire rope (21) so as to clamp and position the steel wire rope (21).
Preferably, the gravity self-locking device further comprises an unlocking hydraulic rod (42), the gravity self-locking device (40) is provided with a pressing rod (45) in linkage fit with the roller (41), the pressing rod (45) is driven to move through the unlocking hydraulic rod (42), and the roller (41) is further moved to the unlocking state from the locking state through the pressing rod (45).
Furthermore, the gravity self-locking device (40) comprises two or more groups which are arranged longitudinally along the steel wire rope (21); a pressure lever (45) of the upper gravity self-locking device (40) is in linkage fit with a pressure lever (45) of the lower gravity self-locking device (40); the unlocking hydraulic rod (42) is arranged below the lowermost gravity self-locking device (40), the unlocking hydraulic rod (42) drives the pressing rod (45) to move upwards through the linkage rod (44), the pressing rod (45) further moves the roller (41) of the lowermost gravity self-locking device (40) upwards to the unlocking state, and the pressing rod (45) of the lower gravity self-locking device (40) drives the pressing rod (45) of the upper gravity self-locking device (40) to synchronously move upwards and drive the corresponding roller (41) to move upwards to the unlocking state.
Further, the gravity self-locking device (40) comprises a left part and a right part, and the left part and the right part are fixedly connected through a lock catch (43); the rollers (41) are respectively provided at the left portion and the right portion, and the wire rope (21) passes through between the left portion and the right portion.
Preferably, the car (10) is further provided with rigid guide rails (22), the guide rails (22) extend from the top to the bottom of the elevator hoistway (20), and the guide rails (22) are symmetrically arranged in the middle of the front and rear sides of the car (10), and/or the guide rails (22) are symmetrically arranged in the middle of the left and right sides of the car (10).
Preferably, the car (10) is further fixedly provided with a hydraulic pump (11) and an electric control device (12), wherein the hydraulic pump (11) is arranged at the bottom of the car (10), the electric control device (12) is arranged at the top of the car (10), and the electric control device (12) further comprises: wireless communication module, the control module of charging.
In addition, the present invention provides a car self-propelled elevator, in addition to any one of the above-described car self-propelled elevators, further including:
a. when the elevator descends, the gravity self-locking device (40) is controlled to unlock the steel wire rope (21), so that the elevator car (10) moves downwards under the action of gravity and overcomes the friction force of the steel wire rope (21);
b. when the elevator descends to a preset floor, the gravity self-locking device (40) is controlled to lock and position the steel wire rope (21), so that the elevator car (10) stops running;
c. when the elevator ascends, firstly, the extension speed of a lifting hydraulic rod (30) below the elevator car (10) is controlled to be smaller than that of the lifting hydraulic rod (30) above the elevator car (10); then, controlling the retraction speed of the lifting hydraulic rod (30) below the car (10) to be greater than the retraction speed of the lifting hydraulic rod (30) above the car (10); then, when the lifting hydraulic rod (30) above the car (10) is not retracted to the bottom, the lifting hydraulic rod (30) below the car (10) extends again; the process is circulated;
d. when the elevator ascends to a preset floor, firstly, the lifting hydraulic rod (30) below the car (10) is controlled to retract to the bottom, and then the lifting hydraulic rod (30) above the car (10) is controlled to retract to the bottom.
Further, in the step a, when the elevator descends, an unlocking hydraulic rod (42) extends out and drives the gravity self-locking device (40) to move to an unlocking state, and then the steel wire rope (21) is unlocked; in the step b, when the elevator descends to a preset floor, the gravity self-locking device (40) moves to a locking state by retracting the unlocking hydraulic rod (42), and then the steel wire rope (21) is locked and positioned.
The invention has the beneficial effects that:
(1) The elevator car is controlled to ascend and descend through the gravity self-locking device and the lifting hydraulic rod, a counterweight device is not needed, and the bearing capacity of the steel wire rope is greatly reduced; in the lift car lifting movement process, the upper end and the lower end of the steel wire rope are fixed; thereby reducing overload damage and fatigue damage of the steel wire rope and prolonging the service life of the elevator;
(2) The lift car is controlled to move upwards through the lifting hydraulic rod, and the lift car is controlled to move downwards through the unlocking hydraulic rod, so that the hydraulic control in the whole process is realized, and the structure is simple and reliable;
(3) The elevator car adopts a double-guide structure of the steel wire rope and the guide rail, so that the elevator car runs more stably.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view showing a descending state of a car self-propelled elevator of the present invention;
fig. 2 is one of the structural diagrams of an ascending state of a car self-propelled elevator of the present invention;
fig. 3 is a second schematic view showing an ascending state of a car self-propelled elevator according to the present invention;
fig. 4 is a third schematic view showing an ascending state of a cage self-propelled elevator according to the present invention;
fig. 5 is a transverse sectional view of an upper or lower cage of a car self-propelled elevator of the present invention;
fig. 6 is a schematic structural view of an upper synchronous frame of a car self-propelled elevator of the present invention;
fig. 7 is a schematic structural view of a lower synchronous frame of a car self-propelled elevator of the present invention;
fig. 8 is a side view of a gravity self-locking apparatus of a car self-propelled elevator of the present invention;
fig. 9 is a front view of a gravity self-locking apparatus of a car self-propelled elevator of the present invention;
fig. 10 is a top view of the gravity self-locking apparatus of the car self-propelled elevator of the present invention;
in the figure:
10-a car; 11-a hydraulic pump; 12-an electronic control device;
20-an elevator shaft; 21-a steel wire rope; 22-a guide rail;
30-lifting hydraulic rods;
40-gravity self-locking device; 41-a roller; 42-unlocking the hydraulic rod; 43-locking; 44-a linkage bar; 441-a first end; 442-a second end; 45-a pressure bar;
50-upper synchronous frame;
60-lower synchronous frame.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 10, a car self-propelled elevator of the present invention includes:
the elevator comprises a car 10, a steel wire rope 21 and a lifting device, wherein the car 10 is provided with two or more steel wire ropes 21 which are symmetrically arranged on two sides of the car 10, the upper end and the lower end of each steel wire rope 21 are fixedly connected with the top and the bottom of an elevator shaft 20 respectively, and the car 10 carries out lifting motion along the steel wire ropes 21;
the gravity self-locking device 40 is arranged on the steel wire rope 21 and is in linkage fit with the car 10 so as to lock and position the steel wire rope 21 by using the weight of the car 10;
an upper synchronizing frame 50 provided above the car 10;
a lower synchronizing frame 60 disposed below the car 10;
the lift hydraulic stem 30, it includes two and above and the symmetry sets up the top and the below of car 10, the fixed setting of one end of the lift hydraulic stem 30 of top is in go up the fixed setting of synchronization frame 50 and other end and be in the upper portion of car 10, the fixed setting of one end of the lift hydraulic stem 30 of below is in lower synchronization frame 60 and the fixed setting of other end are in the lower part of car 10.
The elevating hydraulic rods 30 of the present embodiment include eight and are respectively provided at the corners of the car 10, four of which connect the upper part of the upper cage 10 and the upper part of the upper cage 50, and four of which connect the lower cage 60 and the lower part of the car 10; alternatively, at least one upper lifting hydraulic rod 30 and one lower lifting hydraulic rod 30 may be provided according to the weight level of the car 10, and may be provided in the middle of the car 10.
As shown in fig. 5 to 10, the four or more wire ropes 21 are symmetrically disposed at both front and rear sides of the car 10 and/or at both left and right sides of the car 10. The gravity self-locking device 40 comprises one or more groups, each group comprises two or more rollers 41, and the rollers 41 are symmetrically arranged on two sides of the steel wire rope 21. In this embodiment, the four wire ropes 21 are symmetrically arranged on the front and rear sides of the car 10; the gravity self-locking device 40 comprises eight groups, wherein four groups are arranged on the upper synchronizing frame 50, and the other four groups are arranged on the lower synchronizing frame 60 and are matched with the steel wire rope 21. In the unlocking state, the distance between the rollers 41 on the two sides is larger than the outer diameter of the steel wire rope 21; in the locking state, the rollers 41 on the two sides move along a preset track until the distance between the rollers is smaller than the outer diameter of the steel wire rope 21 so as to clamp and position the steel wire rope 21.
In addition, the upper and lower synchronizing frames 50 and 60 of this embodiment further have unlocking hydraulic rods 42 respectively corresponding to the positions of the gravity self-locking device 40, the gravity self-locking device 40 is provided with a pressing rod 45 in linkage fit with the roller 41, the pressing rod 45 is driven by the unlocking hydraulic rods 42 to move, and the roller 41 is further moved from the locked state to the unlocked state by the pressing rod 45. In this embodiment, the gravity self-locking device 40 includes two or more groups, and is arranged along the longitudinal direction of the steel wire rope 21; the pressure lever 45 of the upper gravity self-locking device 40 is in linkage fit with the pressure lever 45 of the lower gravity self-locking device 40; the unlocking hydraulic rod 42 is arranged below the lowermost gravity self-locking device 40, the unlocking hydraulic rod 42 drives the pressure rod 45 to move upwards through the linkage rod 44, the pressure rod 45 further moves the roller 41 of the lowermost gravity self-locking device 40 upwards to the unlocking state, and the pressure rod 45 of the upper gravity self-locking device 40 is driven by the pressure rod 45 of the lower gravity self-locking device 40 to synchronously move upwards and drive the corresponding roller 41 to move upwards to the unlocking state. Further, the gravity self-locking device 40 comprises a left part and a right part, and the left part and the right part are fixedly connected through a lock catch 43; the rollers 41 are respectively provided at the left portion and the right portion, and the wire rope 21 passes between the left portion and the right portion.
As shown in fig. 5, the car 10 is further provided with rigid guide rails 22, the guide rails 22 extending from the top to the bottom of the hoistway 20, and the guide rails 22 are symmetrically disposed at the middle of the front and rear sides of the car 10, and/or the guide rails 22 are symmetrically disposed at the middle of the left and right sides of the car 10.
As shown in fig. 3, the car 10 is further fixedly provided with a hydraulic pump 11 and an electric control device 12, wherein the hydraulic pump 11 is arranged at the bottom of the car 10, the electric control device 12 is arranged at the top of the car 10, and the electric control device 12 further includes: wireless communication module, the control module of charging.
As shown in fig. 1 to 4, the present invention further provides a control method of a car self-propelled elevator, which is based on any one of the car self-propelled elevators, and comprises the following steps:
a. when the elevator descends, as shown in fig. 1, the gravity self-locking device 40 is controlled to unlock the steel wire rope 21, so that the car 10 moves downwards under the action of gravity against the friction force of the steel wire rope 21;
b. when the elevator descends to a preset floor, the gravity self-locking device 40 is controlled to lock and position the steel wire rope 21, so that the car 10 stops running;
c. when the elevator ascends, firstly, as shown in fig. 2, the extension of the lifting hydraulic rod 30 below the car 10 is controlled; as shown in fig. 3, the extension speed of the elevation hydraulic rod 30 below the car 10 is controlled to be lower than the extension speed of the elevation hydraulic rod 30 above the car 10; then, as shown in fig. 4, the retraction speed of the elevation hydraulic rod 30 below the car 10 is controlled to be greater than the retraction speed of the elevation hydraulic rod 30 above the car 10; next, when the lifting hydraulic rod 30 above the car 10 is not retracted to the bottom, the lifting hydraulic rod 30 below the car 10 is extended again; the circulation is carried out;
d. when the elevator ascends to a predetermined floor, the lifting hydraulic rod 30 below the car 10 is preferably controlled to retract to the bottom, and then the lifting hydraulic rod 30 above the car 10 is controlled to retract to the bottom.
In the embodiment, in the step a, when the elevator goes down, the unlocking hydraulic rod 42 extends out and drives the gravity self-locking device 40 to move to an unlocking state, so that the steel wire rope 21 is unlocked; in the step b, when the elevator descends to a preset floor, the unlocking hydraulic rod 42 retracts to enable the gravity self-locking device 40 to move to a locking state, and then the steel wire rope 21 is locked and positioned.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. As for the method embodiment, since it is basically similar to the apparatus embodiment, the description is simple, and the relevant points can be referred to the partial description of the apparatus embodiment.
While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A car self-propelled elevator, comprising:
the elevator car comprises a car body (10), steel wire ropes (21) and a lifting mechanism, wherein the two or more steel wire ropes (21) are symmetrically arranged on two sides of the car body (10), the upper end and the lower end of each steel wire rope (21) are fixedly connected with the top and the bottom of an elevator shaft (20) respectively, and the car body (10) moves up and down along the steel wire ropes (21);
the gravity self-locking device (40) is arranged on the steel wire rope (21) and is in linkage fit with the car (10) so as to lock and position the steel wire rope (21) by utilizing the weight of the car (10);
an upper synchronizing frame (50) disposed above the car (10);
a lower synchronizing frame (60) provided below the car (10);
the lift hydraulic stem (30), it includes two and above and the symmetry sets up the top and the below of car (10), the fixed setting of one end of the lift hydraulic stem (30) of top goes up synchronous frame (50) and the fixed setting of the other end is in the upper portion of car (10), the fixed setting of one end of the lift hydraulic stem (30) of below is in synchronous frame (60) and the fixed setting of the other end are in the lower part of car (10).
2. A car self-propelled elevator according to claim 1, characterized in that: the steel wire rope (21) comprises four or more than four steel wire ropes, and the steel wire ropes are symmetrically arranged on the front side and the rear side of the lift car (10), and/or symmetrically arranged on the left side and the right side of the lift car (10).
3. A car self-propelled elevator according to claim 1, characterized in that: the gravity self-locking device (40) comprises two or more groups, at least one group is arranged above the lift car (10), at least one group is arranged below the lift car (10), each group comprises two or more rollers (41), and the rollers (41) are symmetrically arranged on two sides of the steel wire rope (21); when the steel wire rope is in an unlocking state, the distance between the rollers (41) on the two sides is larger than the outer diameter of the steel wire rope (21); when the steel wire rope is in a locking state, the rollers (41) on the two sides move along a preset track until the distance between the rollers is smaller than the outer diameter of the steel wire rope (21) so as to clamp and position the steel wire rope (21).
4. A car self-propelled elevator according to claim 3, characterized in that: the gravity self-locking device is characterized by further comprising an unlocking hydraulic rod (42), wherein a pressure rod (45) in linkage fit with the roller (41) is arranged on the gravity self-locking device (40), the pressure rod (45) is driven to move through the unlocking hydraulic rod (42), and the roller (41) is further moved to the unlocking state from the locking state by the pressure rod (45).
5. A car self-propelled elevator according to claim 1, characterized in that: the car (10) is further provided with rigid guide rails (22), the guide rails (22) extend from the top to the bottom of the elevator hoistway (20), and the guide rails (22) are symmetrically arranged in the middle of the front side and the rear side of the car (10), and/or the guide rails (22) are symmetrically arranged in the middle of the left side and the right side of the car (10).
6. A car self-propelled elevator according to claim 1, characterized in that: car (10) still fixedly are provided with hydraulic pump (11) and electrically controlled device (12), wherein, hydraulic pump (11) set up the bottom of car (10), electrically controlled device (12) set up the top of car (10), just electrically controlled device (12) further includes: wireless communication module, the control module of charging.
7. A control method of a car self-propelled elevator according to any one of claims 1 to 6, characterized by comprising the steps of:
when the elevator descends, controlling the gravity self-locking device (40) to unlock the steel wire rope (21), so that the elevator car (10) moves downwards against the friction force of the steel wire rope (21) under the action of gravity;
b, when the elevator descends to a preset floor, controlling the gravity self-locking device (40) to lock and position the steel wire rope (21) so as to stop the car (10);
when the elevator ascends, firstly, controlling the extension speed of the lifting hydraulic rod (30) below the car (10) to be lower than the extension speed of the lifting hydraulic rod (30) above the car (10); then, controlling the retraction speed of the lifting hydraulic rod (30) below the car (10) to be greater than the retraction speed of the lifting hydraulic rod (30) above the car (10); then, when the lifting hydraulic rod (30) above the car (10) is not retracted to the bottom, the lifting hydraulic rod (30) below the car (10) extends again; the process is circulated;
and d, when the elevator ascends to a preset floor, preferably, controlling the lifting hydraulic rod (30) below the car (10) to retract to the bottom, and then controlling the lifting hydraulic rod (30) above the car (10) to retract to the bottom.
8. The control method of a car self-propelled elevator according to claim 7, wherein in the step a, when the elevator goes down, the unlocking hydraulic rod (42) extends out and drives the gravity self-locking device (40) to move to an unlocking state, so that the steel wire rope (21) is unlocked; in the step b, when the elevator descends to a preset floor, the unlocking hydraulic rod (42) retracts to enable the gravity self-locking device (40) to move to a locking state, and then the steel wire rope (21) is locked and positioned.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710875580.2A CN107601222B (en) | 2017-09-25 | 2017-09-25 | Car self-propelled elevator and control method thereof |
| PCT/CN2018/094228 WO2019056829A1 (en) | 2017-09-25 | 2018-07-03 | Elevator having self-moving car, and control method for same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710875580.2A CN107601222B (en) | 2017-09-25 | 2017-09-25 | Car self-propelled elevator and control method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN107601222A CN107601222A (en) | 2018-01-19 |
| CN107601222B true CN107601222B (en) | 2022-12-30 |
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| CN201710875580.2A Active CN107601222B (en) | 2017-09-25 | 2017-09-25 | Car self-propelled elevator and control method thereof |
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| CN (1) | CN107601222B (en) |
| WO (1) | WO2019056829A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107601222B (en) * | 2017-09-25 | 2022-12-30 | 毛小明 | Car self-propelled elevator and control method thereof |
| CN110040488A (en) * | 2019-05-14 | 2019-07-23 | 上海德圣米高电梯有限公司 | A kind of intelligence vertical and horizontal movement system |
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| CN104743424A (en) * | 2015-03-16 | 2015-07-01 | 吴家集 | Stepping hydraulic elevator |
| CN104787646A (en) * | 2015-05-14 | 2015-07-22 | 苏州德奥电梯有限公司 | Hydraulic elevator |
| CN207375541U (en) * | 2017-09-25 | 2018-05-18 | 毛小明 | Car self-propelled elevator |
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| Publication number | Publication date |
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| CN107601222A (en) | 2018-01-19 |
| WO2019056829A1 (en) | 2019-03-28 |
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