CN118458552B - A home elevator with rear counterweight - Google Patents
A home elevator with rear counterweight Download PDFInfo
- Publication number
- CN118458552B CN118458552B CN202410932623.6A CN202410932623A CN118458552B CN 118458552 B CN118458552 B CN 118458552B CN 202410932623 A CN202410932623 A CN 202410932623A CN 118458552 B CN118458552 B CN 118458552B
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- CN
- China
- Prior art keywords
- counterweight
- rope
- lateral
- assembly
- wheel
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 40
- 239000010959 steel Substances 0.000 claims abstract description 40
- 238000001125 extrusion Methods 0.000 claims description 29
- 230000003287 optical effect Effects 0.000 claims description 24
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 3
- 230000000670 limiting effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
- B66B11/0035—Arrangement of driving gear, e.g. location or support
- B66B11/0045—Arrangement of driving gear, e.g. location or support in the hoistway
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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
- B66B11/0065—Roping
- B66B11/008—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B17/00—Hoistway equipment
- B66B17/12—Counterpoises
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/02—Guideways; Guides
- B66B7/021—Guideways; Guides with a particular position in the shaft
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The invention relates to the technical field of installation and adjustment of steel belts of home elevators, in particular to a home elevator with a rear counterweight, which comprises a counterweight cross beam, a traction sheave, a counterweight device, a steel belt and a car assembly, wherein the counterweight cross beam is fixed on the side wall of the top end of a vertical shaft, the traction sheave is installed on the counterweight cross beam through a traction machine seat, and a top assembly beam is fixedly assembled at the upper end of the counterweight cross beam. The overhead type structure design is adopted, so that the space occupation and the building height of the rope winding mechanism can be effectively reduced, and the building cost is reduced; the counterweight is arranged at the rear, the relative positions of the elevator components are distributed, and the steel belt is in a rope winding mode, so that the steel belt is vertically tangent with the rope pulleys, the steel belt is vertical and tangent with the rope pulleys, and the elevator car is lifted to be more stable in running and better in comfort; through the layout of the inverted L-shaped structure, the hoistway can be effectively attached, and the layout is more reasonable; the position of the second top layer rope return wheel is adjusted and assembled through the embedded adjusting guide rails positioned on the inner walls of the two sides of the top assembly beam, so that the firmness and the stability of the structure can be maintained.
Description
Technical Field
The invention relates to the technical field of installation and adjustment of household elevator steel belts, in particular to a counterweight rear-mounted household elevator.
Background
The basic structure of an elevator is to arrange a car assembly in a vertical hoistway. The elevator car assembly is controlled to move up and down by using a traction driving mode, and the elevator car assembly has the advantages of safety, reliability, basically unlimited lifting height, easiness in controlling the elevator speed and the like, and becomes the main stream of elevator product driving modes. In the traction type lifting mechanism, a steel wire rope is suspended in a rope groove of a traction sheave, one side of the steel wire rope bypasses a car, the other side of the steel wire rope bypasses a counterweight, and the traction sheave drives the steel wire rope of an elevator to drive a car assembly to lift by utilizing friction between the steel wire rope and the steel wire rope.
In the counterweight rear-mounted elevator, the space above the car assembly is usually designed by a traction machine, and the space layout and the rope winding mode are unreasonable, so that the lifting space of the elevator is limited, and the floor height and the building cost are increased;
The unreasonable design of the space layout and the rope winding mode also causes the steel belt to be not vertical, for example, the steel belt forms a horn mouth shape with upward openings at two sides of the car, so that the elevator is unstable in running and has a falling sense; in addition, the existing elevator cannot monitor the running state of the vertical elevator in real time, for example, the riding experience is poor due to unstable speed of the traction machine.
Disclosure of Invention
The invention aims to solve the technical problems that: the counterweight rear-mounted home elevator is stable in operation, comfortable in riding experience and high in hoistway utilization rate.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a to heavy rear-mounted home elevator, including having hauler, steel band, car subassembly and the counterweight that can go up and down to set up on the well rear side wall through counterweight guide rail, two counterweight guide rail tops have fixed counterweight crossbeam, and the hauler is fixed on the counterweight crossbeam to on downward orthographic projection face, the hauler skew car subassembly, the well top still fixed mounting have the level set up and with the top assembly beam that counterweight crossbeam looks vertically set up, install first top layer and return the rope pulley, second top layer and take away the first optical axis of line position with limiting steel on the top assembly beam, bottom pinch roller, limiting steel take away the second optical axis and the third optical axis of line position on the counterweight crossbeam are located the below of hauler, counterweight device upper end is installed to the return rope pulley through the top support, car is returned the rope pulley to car middle position, steel band one end fixed mounting is behind the bottom the counterweight crossbeam, the other end is walked around second, third, is walked around the counterweight and is returned the rope pulley to the top in proper order, is walked around the first optical axis, is walked around the top, is walked around the first top layer and is walked around the first optical axis to the top, is walked around the top layer and is passed around the top and is returned to the top.
The second optical axis, the third optical axis and the counterweight return rope wheels are respectively positioned in the orthographic projection range of the traction sheave, and the steel belt is vertically tangent to each rope wheel.
The embedded adjusting guide rail is fixedly installed on the inner walls of the left side and the right side of the top assembly beam, the electric control translation screw rod is movably installed in the embedded adjusting guide rail, and the second top layer rope return wheel is sleeved on the electric control translation screw rod through the internal thread translation blocks at the left end and the right end and is assembled with the electric control translation screw rod in a threaded mode.
The top assembly beam comprises a top beam end frame fixedly arranged on the counterweight cross beam, a top beam cross frame fixed on the left side wall and the right side wall of the vertical shaft, and a top beam main frame fixedly arranged on the top beam end frame and the top beam cross frame, and the length of the top beam main frame extends along the front-back direction.
The transverse support is movably provided with a lateral extrusion arm, the end part of the lateral extrusion arm is movably provided with a driving extrusion wheel, the side wall of the main support is movably provided with an end part of an electric control telescopic support rod through a lateral rotating shaft, and the other end part of the electric control telescopic support rod is movably connected with the lateral extrusion arm through a rotating shaft.
The lateral extrusion device is characterized in that an opening is formed in the outer side of the lateral support frame, and a lateral assembly shaft for movably assembling the lateral extrusion arm is fixedly assembled in the lateral support frame.
The lateral assembly opening is formed in the lower side wall of the transverse support frame, corresponding to the lateral extrusion arm connecting rod.
And a laser detection probe for monitoring the running state of the car rope return wheel is fixedly arranged on the inner top surface of the top beam main frame.
The counterweight beam is characterized in that two sides of the counterweight beam are provided with downward protruding lateral assembly frames, bottom guide grooves are formed in the lateral assembly frames, and the bottom pressing wheels are inserted into the bottom guide grooves through guide blocks at two sides to be assembled with the bottom guide grooves in a sliding mode.
The bottom guide groove is internally provided with an inner guide rod which is in sliding fit with the guide block, and reset springs are sleeved on two sides of the guide block outside the inner guide rod.
The beneficial effects of the invention are as follows:
(1) According to the rear-mounted household elevator with the traction machine arranged in the offset manner and the rear counterweight, the overhead structural design is adopted, so that the space occupation and the building height of a rope winding mechanism can be effectively reduced, and the building cost is reduced;
(2) The counterweight is arranged at the rear, the relative positions of the elevator components are distributed, and the steel belt is in a rope winding mode, so that the steel belt is vertically tangent with the rope pulleys, the steel belt is vertical and tangent with the rope pulleys, and the elevator car is lifted to be more stable in running and better in comfort;
(3) The top assembly beam can be effectively attached to the well by adopting the layout of the inverted L-shaped structure, so that the layout is more reasonable and the strength is high;
(4) The second top layer rope return wheel adopting the electric control structural design can be adapted to car components with different specifications, so that the application range of the car components is enlarged;
(5) The position of the second top layer rope return wheel is adjusted and assembled through embedded adjusting guide rails positioned on the inner walls of the two sides of the top assembly beam, so that the firmness and the stability of the structure can be maintained;
(6) The lower ends of the transverse supporting frames on the two side walls of the top beam transverse frame are movably provided with lateral extrusion arms controlled by the electric control telescopic supporting rods, and the lateral extrusion arms can be automatically adjusted according to the monitoring mechanism, so that the state of the steel belt is corrected and adjusted, and the stability in movement is enhanced.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the structure of the inside of the roof rail in the present invention.
Fig. 3 is a top view of the top mounting bar of the present invention.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The counterweight rear home elevator comprises a counterweight cross beam 1 fixedly mounted on the side wall of the top end of a vertical hoistway, a traction machine with a traction sheave 3, a counterweight device 4, a steel belt 5 and a car component, wherein the traction machine is mounted on the counterweight cross beam 1 through a traction machine base 2, a top assembly beam is fixedly mounted on the counterweight cross beam 1, a first top layer rope return sheave 6, a second top layer rope return sheave 7 and a first optical axis 8 are mounted in the top assembly beam, a bottom pinch roller 9, a second optical axis 10 and a third optical axis 11 are mounted at the lower end of the counterweight cross beam 1, a counterweight rope return sheave 12 is mounted at the upper end of the counterweight cross beam 1 through a top support, a car rope return sheave 13 is mounted at the upper end of the car component through a top hanger, one end of the steel belt 5 is fixedly mounted at the bottom of the counterweight cross beam 1, the other end of the steel belt 5 is fixedly mounted on the inner side surface of the top assembly beam, and the steel belt 5 bypasses the second optical axis 10, the third optical axis 11, the counterweight rope return sheave 12, the traction sheave 3, the bottom pinch roller 9, the first top layer rope return sheave 6, the second top layer rope return sheave 13 and the car optical axis 13 and the first optical axis 8.
Working principle: the traction sheave 3 rotates to drive the steel belt 5 to move along the counterweight return rope sheave 12, the traction sheave 3, the bottom pinch roller 9, the first top layer return rope sheave 6, the second top layer return rope sheave 7 and the car return rope sheave 13, so as to control the lifting adjustment of the car assembly along the vertical hoistway.
In order to match the top installation and fixation, the top assembly beam comprises a top beam end frame 51 fixedly installed at the upper middle part of the counterweight beam 1, a top beam transverse frame 52 fixed on the left and right side walls of the vertical shaft by bolts, and a top beam main frame 53 fixedly installed on the top beam end frame 51 and the top beam transverse frame 52.
In order to match with the assembly and adjustment of the screws at the two sides, the embedded adjusting guide rails 14 are fixedly arranged on the inner walls at the two sides of the top beam main frame 53, and the electric control translation screw rods 15 are movably arranged in the embedded adjusting guide rails 14.
In order to match with the threaded control adjustment, the second top layer rope return wheel 7 is sleeved on the electric control translation screw rod 15 through internal thread translation blocks 16 at two ends and is assembled with the electric control translation screw rod 15 in a threaded manner.
The electric control translation screw rod 15 controls the translation adjustment of the internal thread translation block 16 through rotation, so that the horizontal position of the second top layer rope return wheel 7 is adjusted, car components with different car rope return wheel 13 sizes can be adapted, the car rope return wheel 13 on the top hanger at the upper end of the car component is ensured to be positioned between the second top layer rope return wheel 7 and the first optical axis 8, the steel belt 5 is vertically tangent with the car rope return wheel 13, and the stability of the car component is ensured.
In order to match the lateral sliding adjustment, two sides of the counterweight beam 1 are provided with downward-protruding lateral assembly frames 161, bottom guide grooves 17 extending up and down are formed in the lateral assembly frames 161, and the bottom pressing wheel 9 is inserted into the bottom guide grooves 17 through two side guide blocks to be assembled with the bottom guide grooves 17 in a sliding manner.
In order to match and elastically tension the bottom pinch roller 9, an inner guide rod 18 in sliding fit with the guide block is arranged in the bottom guide groove 17 and used for improving the limiting property and the guiding property of the guide block, and a reset spring 19 is sleeved between the outer side end of the inner guide rod 18 and the two sides of the guide block.
In order to match with the lateral adjustment control, transverse supporting frames 20 are fixedly assembled on the front side wall and the rear side wall of the top beam transverse frame 52, lateral extrusion arms 21 are rotatably assembled on the transverse supporting frames 20, active extrusion wheels 22 are movably installed at the end parts of the lateral extrusion arms 21, one end part of an electric control telescopic supporting rod 24 is movably installed on the side wall of the top beam main frame 53 through a lateral rotating shaft, and the other end part of the electric control telescopic supporting rod 24 is movably connected with the lateral extrusion arms 21 through rotating shafts.
In order to cooperate with optical monitoring, a laser detection probe 25 for monitoring the running state of the car return sheave 13 is fixedly arranged on the inner top surface of the top beam main frame 53.
The lifting speed of the car assembly is judged by monitoring the distance change in real time during operation, when the lifting speed exceeds the designed maximum safety speed, the electric control telescopic supporting rod 24 is controlled to be started, the lateral extrusion arms 21 are extruded to rotate by stretching, then the lateral extrusion arms 21 are utilized to extrude the steel belts 5, namely the steel belts 5 on two sides are respectively extruded to the middle extrusion matching roller 23 by the active extrusion wheel 22, so that the running speed of the steel belts 5 is reduced in an auxiliary matching manner by the traction machine;
the electrically controlled telescopic stay 24 is started, and the lateral extrusion arm 21 is pulled to rotate by contraction, and then the lateral extrusion arm 21 is controlled to move to two sides, so that the lifting of the car assembly is not affected.
In the case of detecting the sway of the car assembly when the car assembly is in operation, the sway can be reduced by pressing the steel strip 5 from the driving pressing wheels 22 at the end portions of the lateral pressing arms 21 on both sides.
For the inner assembly, an opening is provided on the outer side of the transverse supporting frame 20, and a transverse assembly shaft 26 for movably assembling the lateral pressing arm 21 is fixedly assembled in the transverse supporting frame 20.
In order to cooperate with the rotation and the limit of the lateral extrusion arm 21, a lateral assembly opening is formed in the lower side wall of the transverse support frame 20, which is positioned on the connecting rod of the lateral extrusion arm 21.
The connecting end of the lateral extrusion arm 21 is inserted into the inner side of the transverse supporting frame 20 through a lateral assembling opening and is movably assembled with the transverse assembling shaft 26.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. The utility model provides a to heavy rear-mounted home elevator, includes hauler, steel band (5) that have traction sheave (3), car subassembly and can go up and down to set up counterweight (4) on the well rear side wall through counterweight guide rail, characterized by: the tops of the two counterweight guide rails are provided with fixed counterweight beams (1), a traction machine is fixed on the counterweight beams (1) and deviates from the car assembly on a downward orthographic projection surface,
The top of the hoistway is also fixedly provided with a top assembly beam which is horizontally arranged and is perpendicular to the counterweight beam (1), a first top layer rope return wheel (6), a second top layer rope return wheel (7) and a first optical axis (8) which limits the wire taking position of the steel belt are arranged on the top assembly beam, a bottom pinch roller (9), a second optical axis (10) and a third optical axis (11) which limit the wire taking position of the steel belt are arranged below the traction machine on the counterweight beam (1), a counterweight rope return wheel (12) is arranged at the upper end of the counterweight device (4) through a top bracket, a car rope return wheel (13) is arranged at the middle position of the top of the car assembly,
After one end part of the steel belt (5) is fixedly arranged at the bottom of the counterweight cross beam (1), the other end part of the steel belt (5) downwards sequentially bypasses the second optical axis (10), the third optical axis (11), backwards bypasses the counterweight return rope wheel (12), upwards bypasses the traction wheel (3), downwards bypasses the bottom pinch wheel (9), upwards bypasses the first top layer return rope wheel (6), the second top layer return rope wheel (7), downwards bypasses the car return rope wheel (13) and upwards bypasses the first optical axis (8), and the other end of the steel belt (5) is fixedly arranged on the top assembly beam.
2. A counter-weight rear-mounted home elevator as claimed in claim 1, characterized in that: the second optical axis (10), the third optical axis (11) and the counterweight return rope wheels (12) are respectively positioned in the orthographic projection range of the traction wheel (3), and the steel belt (5) is vertically tangent with each rope wheel.
3. A counter-weight rear-mounted home elevator as claimed in claim 1, characterized in that: the embedded type adjusting guide rail (14) is fixedly installed on the inner walls of the left side and the right side of the top assembly beam, an electric control translation screw rod (15) is movably installed in the embedded type adjusting guide rail (14), and the second top layer rope return wheel (7) is sleeved on the electric control translation screw rod (15) through internal thread translation blocks (16) at the left end and the right end and is assembled with the electric control translation screw rod (15) in a threaded mode.
4. A counter-weight rear-mounted home elevator as claimed in claim 1, characterized in that: the top assembly beam comprises a top beam end frame (51) fixedly arranged on the counterweight cross beam (1), top beam transverse frames (52) fixed on the left side wall and the right side wall of the vertical shaft, and top beam main frames (53) fixedly arranged on the top beam end frame (51) and the top beam transverse frames (52), wherein the length of the top beam main frames (53) extends along the front-back direction.
5. The counterweighted rear home elevator of claim 4, wherein: the transverse support is characterized in that transverse support frames (20) are fixedly assembled on the front side wall and the rear side wall of the top beam transverse support (52), lateral extrusion arms (21) are movably assembled on the transverse support frames (20), driving extrusion wheels (22) are movably mounted at the end parts of the lateral extrusion arms (21), one end part of an electric control telescopic support rod (24) is movably mounted on the side wall of the top beam main support (53) through a lateral rotating shaft, and the other end part of the electric control telescopic support rod (24) is movably connected with the lateral extrusion arms (21) through a rotating shaft.
6. The counterweighted rear home elevator of claim 5, wherein: the lateral extrusion device is characterized in that an opening is formed in the outer side of the lateral support frame (20), and a lateral assembly shaft (26) for movably assembling the lateral extrusion arm (21) is fixedly assembled in the lateral support frame (20).
7. The counterweighted rear home elevator of claim 6, wherein: the lateral assembly opening is formed in the lower side wall of the transverse support frame (20) corresponding to the lateral extrusion arm (21) connecting rod.
8. The counterweighted rear home elevator of claim 4, wherein: a laser detection probe (25) for monitoring the running state of the car rope return wheel (13) is fixedly arranged on the inner top surface of the top beam main frame (53).
9. A counter-weight rear-mounted home elevator as claimed in claim 1, characterized in that: the counterweight beam is characterized in that two sides of the counterweight beam (1) are provided with downward-protruding lateral assembly frames (161), bottom guide grooves (17) are formed in the lateral assembly frames (161), and the bottom pressing wheels (9) are inserted into the bottom guide grooves (17) through guide blocks at two sides to be assembled with the bottom guide grooves (17) in a sliding mode.
10. The counterweighted rear home elevator of claim 9, wherein: the bottom guide groove (17) is internally provided with an inner guide rod (18) which is in sliding fit with the guide block, and reset springs (19) are sleeved on the outer sides of the inner guide rod (18) and positioned on the two sides of the guide block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410932623.6A CN118458552B (en) | 2024-07-12 | 2024-07-12 | A home elevator with rear counterweight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410932623.6A CN118458552B (en) | 2024-07-12 | 2024-07-12 | A home elevator with rear counterweight |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118458552A CN118458552A (en) | 2024-08-09 |
| CN118458552B true CN118458552B (en) | 2024-11-22 |
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ID=92165344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410932623.6A Active CN118458552B (en) | 2024-07-12 | 2024-07-12 | A home elevator with rear counterweight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118458552B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103072874A (en) * | 2013-01-28 | 2013-05-01 | 舒马克电梯（张家港）有限公司 | Counterweight post-positioned elevator without machine room |
| CN103370271A (en) * | 2011-02-23 | 2013-10-23 | 奥的斯电梯公司 | Elevator system including a 4:1 roping arrangement |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4443546B2 (en) * | 2006-09-25 | 2010-03-31 | 株式会社日立製作所 | Elevator equipment |
| CN204607324U (en) * | 2015-05-05 | 2015-09-02 | 苏州威尔森电梯有限公司 | Bottom elevator without cabin |
| CN204847680U (en) * | 2015-07-25 | 2015-12-09 | 东南电梯股份有限公司 | No computer lab elevator arrangement structure |
| CN216038060U (en) * | 2021-09-03 | 2022-03-15 | 亚洲富士电梯（临沂）有限公司 | Counterweight postpositive machine-room-free traction drive elevator |
| CN114261868A (en) * | 2021-12-27 | 2022-04-01 | 苏州斯格别墅电梯有限公司 | Domestic chain formula platform elevator |
-
2024
- 2024-07-12 CN CN202410932623.6A patent/CN118458552B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103370271A (en) * | 2011-02-23 | 2013-10-23 | 奥的斯电梯公司 | Elevator system including a 4:1 roping arrangement |
| CN103072874A (en) * | 2013-01-28 | 2013-05-01 | 舒马克电梯（张家港）有限公司 | Counterweight post-positioned elevator without machine room |
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| CN118458552A (en) | 2024-08-09 |
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