CN111824901A - Elevator installation construction method - Google Patents
Elevator installation construction method Download PDFInfo
- Publication number
- CN111824901A CN111824901A CN202010783732.8A CN202010783732A CN111824901A CN 111824901 A CN111824901 A CN 111824901A CN 202010783732 A CN202010783732 A CN 202010783732A CN 111824901 A CN111824901 A CN 111824901A
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- CN
- China
- Prior art keywords
- guide rail
- car
- elevator
- counterweight
- installation
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Classifications
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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
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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
- B66B11/001—Arrangement of controller, e.g. location
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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
- B66B7/00—Other common features of elevators
- B66B7/02—Guideways; Guides
- B66B7/023—Mounting means therefor
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
An elevator installation construction method comprises the following steps; measuring the dimensions of the car guide rail and the counterweight guide rail; installing a traction machine supporting plate at the top of an elevator shaft, and then locking the traction machine supporting plate through a screw; the car guide rail and the counterweight guide rail are arranged on the fixing plate in a sliding manner, the counterweight block is arranged on the counterweight guide rail, and the counterweight guide rail is connected with the fixing plate in a sliding manner; the elevator car is connected with the traction machine through the steel cable, then the elevator car is positioned in the elevator car guide rail, the distance between the elevator car guide rail and the elevator car is observed and measured, the position of the elevator car guide rail on the fixed plate is adjusted according to the measurement data, landing doors of all floors of the elevator are installed, an elevator door is installed, and finally electric equipment is installed and the elevator is debugged. According to the invention, by setting the guide rail as the adjustable track, the installation of the car and the counterweight block is more accurate, the installation error is reduced, and the car guide rail are more convenient and simpler to adjust; the installation and construction efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of elevator installation and construction, in particular to an elevator installation and construction method.
Background
An elevator is a lifting device that serves a number of specific floors in a building and that operates intermittently in a vertical direction to transport passengers or goods. The broad concept of elevator includes passenger and cargo elevator, escalator, moving sidewalk, etc., and the narrow elevator means a vertical or slightly inclined lifting device with a car serving a specified floor, not including escalator and moving sidewalk; the elevator can run safely, efficiently and comfortably without leaving the control level of the elevator. In the aspect of drive control: the method comprises the stages of direct current motor drive control, alternating current single-speed motor drive control, alternating current double-speed motor drive control, alternating current voltage-variable frequency-variable speed-variable drive control, alternating current permanent magnet synchronous motor frequency-variable speed-variable drive control and the like. The development of urban buildings leads the importance and the requirement of elevators to be higher and higher, and promotes the development of elevator technology towards the trends of higher safety, low cost, high capacity, high speed, energy conservation, intelligence, environmental protection and the like. The elevator construction technology is an important factor for determining the installation cost, quality and safety of the elevator and also an important link for ensuring the normal and safe operation of the elevator. The construction technology of the elevator is closely related to the elevator product. At present, along with the development of high-speed elevators, the measurement accuracy of hoistways, guide rails and equipment is required to be gradually improved, no matter whether the elevators are installed by scaffolds or without scaffolds, the control on the installation accuracy of the guide rails in the elevators is not good, when the accuracy of construction does not influence the normal operation of the elevators, a large amount of labor and time are required to be consumed to solve the problem of the low accuracy of the guide rails, and once the positions of the guide rails are changed, the normal operation of other mechanical parts is influenced; in order to solve the problems, the application provides an elevator installation construction method.
Disclosure of Invention
Objects of the invention
In order to solve the technical problems in the background art, the invention provides the elevator installation construction method, the method of setting the guide rail into the adjustable track is more accurate when the lift car and the counterweight block are installed, the installation error is reduced, and the method is more convenient and simpler when the lift car and the lift car guide rail need to be adjusted; the installation and construction efficiency is greatly improved.
(II) technical scheme
The invention provides an elevator installation construction method, which comprises the following steps of;
first measurement elevator shaft
Measuring the size of an elevator shaft, the size of a car and the size of a counterweight block, and determining the sizes of a car guide rail and a counterweight guide rail;
second installation and erection of traction machine supporting plate
Through measuring data, firstly installing a support and a traction machine supporting plate at the top of an elevator shaft, and then fixing the traction machine supporting plate and the support and locking the support by screws;
third installation and erection of guide rail fixing plate
Then three groups of guide rail fixing plates are arranged on the tractor supporting plate, and the three groups of guide rail fixing plates are arranged at equal intervals; the mounting positions of the fixed plates are positioned at two opposite sides of the elevator door, then the guide rail fixed plates are correspondingly mounted at the bottom of the hoistway at the same time, and the fixed plates are provided with sliding chutes, so that the car guide rail and the counterweight guide rail can be conveniently adjusted according to requirements after being mounted, and the assembly error is reduced;
fourth installation car guide rail and counterweight guide rail
The car guide rails and the counterweight guide rails are arranged on the fixing plate in a sliding mode, and then the car guide rails, the counterweight guide rails and the guide rail fixing plate are respectively locked through locking bolts, wherein the number of the car guide rails is two, the number of the counterweight guide rails is one, and the two groups of the car guide rails and the one group of the counterweight guide rails are arranged on the guide rail fixing plate at equal intervals according to the length of an elevator car; and the distance between the reserved guide rail and the lift car is more than or equal to 50 mm;
fifth installation traction machine and counterweight block
The traction machine is arranged on the traction machine supporting plate, the counterweight block is arranged on the counterweight guide rail, the counterweight guide rail can be attached to the counterweight block by loosening the locking bolt and moving the counterweight guide rail on the fixing plate according to the size of the counterweight block, and the locking bolt is screwed to fix the counterweight guide rail at the moment, so that the difficulty in mounting the counterweight block and the counterweight guide rail is reduced, and the accuracy is improved;
sixth installation cage
Firstly, a car is moved into an elevator shaft, then the car is connected with a traction machine through a steel rope, then the car is positioned in a car guide rail, at the moment, the car enters the elevator shaft but does not attach to the car guide rail, so that the car is required to be lifted to the top of the shaft, the distance between the car guide rail and the car is observed and measured, then the car is moved out of the shaft, a locking bolt on the car guide rail is loosened, the position of the car guide rail on a fixed plate is adjusted according to measurement data, after the adjustment is finished, the car enters from the top of the elevator shaft and attaches to the car guide rail, the car installation is completed, the installation accuracy is higher, the operation is more convenient, the fault tolerance rate is good, the guide rail installation is not inaccurate, and the rework engineering;
seventh installation hall door, electrical device and debugging elevator
And (3) installing the landing doors of all floors of the elevator, installing the elevator doors, and finally installing electrical equipment and debugging the elevator.
Preferably, a buffer and a tensioner are provided in the elevator shaft.
Preferably, the car and the car guide rails are provided directly with pulleys.
Preferably, a pulley is arranged between the counterweight block and the counterweight guide rail.
Preferably, a speed governor is provided on the car.
Preferably, the traction machine support plate is detachably connected with the elevator shaft.
Compared with the prior art, the technical scheme of the invention has the following beneficial technical effects: during construction, firstly measuring the size of an elevator shaft, the size of a car and the size of a counterweight block, and determining the sizes of a car guide rail and a counterweight guide rail; then, mounting a support and a traction machine supporting plate at the top of the elevator shaft through measuring data, and fixing the traction machine supporting plate and the support through screws; at the moment, three groups of guide rail fixing plates are arranged at the bottom of the tractor supporting plate and are arranged at equal intervals; the mounting positions of the fixed plates are positioned at two opposite sides of the elevator door, then the guide rail fixed plates are correspondingly mounted at the bottom of the hoistway at the same time, and a sliding chute is reserved on the fixed plates; then, the car guide rails and the counterweight guide rails are arranged on the fixing plate in a sliding mode, and the car guide rails, the counterweight guide rails and the guide rail fixing plate are respectively locked through locking bolts, wherein the number of the car guide rails is two, the number of the counterweight guide rails is one, and the two groups of the car guide rails and the one group of the counterweight guide rails are arranged on the guide rail fixing plate at equal intervals according to the length of the elevator car; and the distance between the reserved guide rail and the lift car is more than or equal to mm; then the tractor is arranged on the tractor supporting plate, the counterweight block is arranged on the counterweight guide rail, the counterweight guide rail is attached to the counterweight block by loosening the locking bolt according to the size and the matching degree of the counterweight block and moving the counterweight guide rail on the fixing plate, and the locking bolt is screwed to fix the counterweight guide rail at the moment, so that the difficulty in mounting the counterweight block and the counterweight guide rail is reduced, and the accuracy is improved; when the car is installed, the car is moved into an elevator shaft, then the car is connected with a traction machine through a steel cable, then the car is positioned in a car guide rail, at the moment, the car enters the elevator shaft but is not completely attached to the car guide rail, so that the car needs to be lifted to the top of the shaft, the distance between the car guide rail and the car is observed, measured and recorded, then the car is moved out of the shaft, a locking bolt on the car guide rail is loosened, the position of the car guide rail on a fixed plate is adjusted according to measurement data, after the adjustment is finished, the car enters from the top of the elevator shaft and is attached to the car guide rail, and the car installation is completed, so that the installation accuracy is higher, the installation is more convenient, the fault tolerance rate is good, the guide rail installation is not inaccurate; and finally, installing the hall door and the elevator door of each floor of the elevator, installing electrical equipment and debugging the elevator. The method of setting the guide rail into the adjustable track is more accurate when the lift car and the counterweight block are installed, reduces installation errors, and is more convenient and simpler when the lift car and the lift car guide rail need to be adjusted; the installation and construction efficiency is greatly improved.
Drawings
Fig. 1 is a schematic structural diagram of an elevator installation construction method provided by the invention.
Fig. 2 is a schematic view of the connection between the car guide rail and the counterweight guide rail and the guide rail fixing plate in the elevator installation construction method.
Reference numerals: 1. an elevator hoistway; 2. a tractor support plate; 3. a traction machine; 4. a car; 5. to the pouring weight; 6. a car guide rail; 7. a counterweight guide rail; 8. a fixing plate; 10. and locking the bolt.
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 further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary 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.
As shown in fig. 1-2, the elevator installation construction method provided by the invention comprises the following steps;
first measurement elevator shaft 1
Measuring the size of an elevator shaft 1, the size of a car 4 and the size of a counterweight 5, and determining the sizes of a car guide rail 6 and a counterweight guide rail 7;
second installation set up traction machine support plate 2
Through measuring data, a support and a traction machine supporting plate 2 are installed at the top of an elevator shaft 1, and then the traction machine supporting plate 2 and the support are fixed and locked through screws;
third installation erection guide rail fixing plate 8
Then three groups of guide rail fixing plates 8 are arranged on the tractor supporting plate 2, and the three groups of guide rail fixing plates 8 are arranged at equal intervals; the mounting positions of the fixing plates are positioned at two opposite sides of the elevator door, then the guide rail fixing plates 8 are correspondingly mounted at the bottom of the hoistway at the same time, and the fixing plates are provided with sliding chutes, so that the car guide rail 6 and the counterweight guide rail 7 can be conveniently adjusted according to requirements after being mounted, and the assembly error is reduced;
fourth installation car guide rail 6 and counterweight guide rail 7
The car guide rails 6 and the counterweight guide rails 7 are arranged on the fixing plate 8 in a sliding mode, and then the car guide rails 6, the counterweight guide rails 7 and the guide rail fixing plate 8 are respectively locked through locking bolts 10, wherein the number of the car guide rails 6 is two, the number of the counterweight guide rails 7 is one, and the two groups of the car guide rails 6 and the one group of the counterweight guide rails 7 are arranged on the guide rail fixing plate 8 at equal intervals according to the length of the elevator car 4; and the distance between the reserved guide rail and the lift car is more than or equal to 50 mm;
fifth installation traction machine 3 and counterweight block
The traction machine 3 is arranged on the traction machine supporting plate 2, the counterweight block 5 is arranged on the counterweight guide rail 7, the counterweight guide rail 7 is attached to the counterweight block 5 by loosening the locking bolt 10 and moving the counterweight guide rail 7 on the fixing plate 8 according to the size of the counterweight block 5, and the locking bolt 10 is screwed to fix the counterweight guide rail 7, so that the difficulty in mounting the counterweight block 5 and the counterweight guide rail 7 is reduced, and the accuracy is improved;
Firstly, a car 4 is moved into an elevator shaft 1, then the car 4 is connected with a traction machine 3 through a steel rope, then the car 4 is positioned in a car guide rail 6, at the moment, the car 4 enters the elevator shaft 1 but is not attached to the car guide rail 6, so that the car 4 needs to be lifted to the top of the shaft, the distance between the car guide rail 6 and the car 4 is observed and measured, then the car 4 is moved out of the shaft, a locking bolt 10 on the car guide rail 6 is loosened, the position of the car guide rail 6 on a fixed plate 8 is adjusted according to measurement data, after the adjustment is finished, the car 4 enters from the top of the elevator shaft 1 and is attached to the car guide rail 6, and the installation of the car 4 is completed, so that the installation accuracy is higher, the installation is more convenient, the fault tolerance rate is good, the guide rail installation inaccuracy is avoided;
seventh installation hall door, electrical device and debugging elevator
And (3) installing the landing doors of all floors of the elevator, installing the elevator doors, and finally installing electrical equipment and debugging the elevator.
In an alternative embodiment, a buffer and a tensioner are provided in the elevator shaft 1.
In an alternative embodiment the car 4 and the car guide rails 6 are provided directly with pulleys.
In an alternative embodiment, a pulley is provided between the counterweight 5 and the counterweight guide rail 7.
In an alternative embodiment, a speed limiter is provided on the car 4.
In an alternative embodiment the hoisting machine support plate 2 is in detachable connection with the elevator shaft 1.
In the invention, during construction, the size of the elevator shaft 1, the size of the car 4 and the size of the counterweight 5 are measured, and the sizes of the car guide rail 6 and the counterweight guide rail 7 are determined; then, through measuring data, a support and a traction machine supporting plate 2 are installed at the top of the elevator shaft 1, and then the traction machine supporting plate 2 and the support are fixed and locked through screws; at the moment, three groups of guide rail fixing plates 8 are arranged at the bottom of the tractor supporting plate 2, and the three groups of guide rail fixing plates 8 are arranged at equal intervals; the mounting positions of the fixing plates are positioned at two opposite sides of the elevator door, then the guide rail fixing plates 8 are correspondingly mounted at the bottom of the hoistway, and a sliding groove is reserved on the fixing plates; then, the car guide rails 6 and the counterweight guide rails 7 are arranged on the fixing plate 8 in a sliding mode, and the car guide rails 6, the counterweight guide rails 7 and the guide rail fixing plate 8 are respectively locked through locking bolts 10, wherein the number of the car guide rails 6 is two, the number of the counterweight guide rails 7 is one, and the two groups of the car guide rails 6 and the one group of the counterweight guide rails 7 are arranged on the guide rail fixing plate 8 at equal intervals according to the length of the elevator car 4; and the distance between the reserved guide rail and the lift car is more than or equal to 50 mm; then the traction machine 3 is installed on the traction machine supporting plate 2, the counterweight block 5 is installed on the counterweight guide rail 7, the counterweight guide rail 7 is attached to the counterweight block 5 by loosening the locking bolt 10 and moving the counterweight guide rail 7 on the fixing plate 8 according to the size and the matching degree of the counterweight block 5, and the locking bolt 10 is screwed to fix the counterweight guide rail 7, so that the difficulty in installing the counterweight block 5 and the counterweight guide rail 7 is reduced, and the accuracy is improved; when the car 4 is installed, the car 4 is moved into the elevator shaft 1, the car 4 is connected to the hoisting machine 3 by a wire rope, the car 4 is then positioned in the car guide rails 6, at which point the car 4, although having entered the elevator shaft 1, does not fully engage the car guide rails 6, it is necessary to raise the car 4 to the top of the hoistway, observe the distance between the car guide rails 6 and the car 4, measure and record, then move the car 4 out of the hoistway, and loosen the locking bolts 10 on the car guide rails 6, the position of the car guide rail 6 on the fixed plate 8 is adjusted according to the measured data, after the adjustment is finished, the car 4 enters from the top of the elevator shaft 1 and is attached to the car guide rail 6, the installation of the car 4 is finished, the installation accuracy is higher, the method is more convenient, the fault tolerance rate is good, and the problems of inaccurate installation of the guide rail and large rework engineering quantity are avoided; and finally, installing the hall door and the elevator door of each floor of the elevator, installing electrical equipment and debugging the elevator. The method of setting the guide rail into the adjustable track is more accurate when the lift car and the counterweight block are installed, reduces installation errors, and is more convenient and simpler when the lift car and the lift car guide rail need to be adjusted; the installation and construction efficiency is greatly improved.
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 (6)
1. An elevator installation construction method is characterized by comprising the following steps;
first measurement elevator shaft (1)
Measuring the size of an elevator shaft (1), the size of a car (4) and the size of a counterweight block (5), and determining the sizes of a car guide rail (6) and a counterweight guide rail (7);
second installation set up traction machine support plate (2)
Through measuring data, a support and a traction machine supporting plate (2) are installed at the top of an elevator shaft (1), and then the traction machine supporting plate (2) and the support are fixed and locked through screws;
third installation setting guide fixing board (8)
Then three groups of guide rail fixing plates (8) are arranged on the tractor supporting plate (2), and the three groups of guide rail fixing plates (8) are arranged at equal intervals; the mounting positions of the fixing plates are positioned at two opposite sides of the elevator door, then the guide rail fixing plates (8) are correspondingly mounted at the bottom of the hoistway at the same time, a sliding groove is reserved on the fixing plates, the car guide rail (6) and the counterweight guide rail (7) can be conveniently adjusted according to requirements after being mounted, and the assembly error is reduced;
fourth installation cage guide rail (6) and counterweight guide rail (7)
The elevator car guide rail structure is characterized in that a car guide rail (6) and a counterweight guide rail (7) are arranged on a fixing plate (8) in a sliding mode, then the car guide rail (6), the counterweight guide rail (7) and the guide rail fixing plate (8) are respectively locked through locking bolts (10), wherein the number of the car guide rails (6) is two, the number of the counterweight guide rails (7) is one, and the two groups of the car guide rails (6) and the one group of the counterweight guide rails (7) are arranged on the guide rail fixing plate (8) at equal intervals according to the length of an elevator car (4; and the distance between the reserved guide rail and the lift car is more than or equal to 50 mm;
fifth installation traction machine (3) and counterweight block
The traction machine (3) is arranged on the traction machine supporting plate (2), the counterweight block (5) is arranged on the counterweight guide rail (7), the counterweight guide rail (7) is attached to the counterweight block (5) by loosening the locking bolt (10) and moving the counterweight guide rail (7) on the fixing plate (8) according to the size of the counterweight block (5), and the locking bolt (10) is screwed down to fix the counterweight guide rail (7), so that the difficulty in mounting the counterweight block (5) and the counterweight guide rail (7) is reduced, and the accuracy is improved;
sixth installation cage (4)
Firstly, the car (4) is moved into an elevator shaft (1), then the car (4) is connected with a traction machine (3) through a steel rope, then the car (4) is positioned in a car guide rail (6), at the moment, the car (4) enters the elevator shaft (1) but does not adhere to the car guide rail (6), therefore, the car (4) is required to be lifted to the top of the shaft, the distance between the car guide rail (6) and the car (4) is observed and measured, then the car (4) is moved out of the shaft, a locking bolt (10) on the car guide rail (6) is loosened, the position of the car guide rail (6) on a fixing plate (8) is adjusted according to the measured data, after the adjustment is finished, the car (4) enters from the top of the elevator shaft (1) and adheres to the car guide rail (6), the installation of the car (4) is finished, and the installation accuracy is higher, the method is more convenient, the fault tolerance rate is good, and the problems of inaccurate installation of the guide rail and large rework engineering quantity are avoided;
seventh installation hall door, electrical device and debugging elevator
And (3) installing the landing doors of all floors of the elevator, installing the elevator doors, and finally installing electrical equipment and debugging the elevator.
2. An elevator installation and construction method according to claim 1, characterized in that a buffer and a tensioner are provided in the elevator shaft (1).
3. An elevator installation and construction method as defined in claim 1, characterized in that the car (4) and the car guide rails (6) are provided directly with pulleys.
4. An elevator installation and construction method according to claim 1, characterized in that a pulley is provided between the counterweight block (5) and the counterweight guide rail (7).
5. An elevator installation and construction method according to claim 1, characterized in that the car (4) is provided with a speed limiter.
6. An elevator installation and construction method according to claim 1, characterized in that the hoisting machine support plate (2) is detachably connected to the elevator shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010783732.8A CN111824901B (en) | 2020-08-06 | 2020-08-06 | Elevator installation construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010783732.8A CN111824901B (en) | 2020-08-06 | 2020-08-06 | Elevator installation construction method |
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| Publication Number | Publication Date |
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| CN111824901A true CN111824901A (en) | 2020-10-27 |
| CN111824901B CN111824901B (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010783732.8A Active CN111824901B (en) | 2020-08-06 | 2020-08-06 | Elevator installation construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113460830A (en) * | 2021-08-06 | 2021-10-01 | 联想新视界(江苏)设备服务有限公司 | Elevator track laying L board installation device |
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| CN110861994A (en) * | 2018-08-28 | 2020-03-06 | 江苏西德电梯有限公司 | Elevator steel structure hoistway guide rail fixing device and construction method thereof |
| CN210505176U (en) * | 2019-09-21 | 2020-05-12 | 中科鼎盛电梯科技江苏有限公司 | Fixed stable no foundation ditch installs hauler additional for elevator |
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| CN1087598A (en) * | 1992-08-31 | 1994-06-08 | 科尼电梯有限公司 | Utilize method and the intermediate member of intermediate member to the elevator hoistways fixed guide |
| CN101124142A (en) * | 2004-11-16 | 2008-02-13 | 奥蒂斯电梯公司 | Mounting guide rail in elevator system |
| CN102381609A (en) * | 2010-08-26 | 2012-03-21 | 东芝电梯株式会社 | Elevator winch mounting method |
| US20150314993A1 (en) * | 2012-12-19 | 2015-11-05 | Inventio Ag | Installation method for an elevator |
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| CN110861994A (en) * | 2018-08-28 | 2020-03-06 | 江苏西德电梯有限公司 | Elevator steel structure hoistway guide rail fixing device and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113460830A (en) * | 2021-08-06 | 2021-10-01 | 联想新视界(江苏)设备服务有限公司 | Elevator track laying L board installation device |
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| Publication number | Publication date |
|---|---|
| CN111824901B (en) | 2022-02-18 |
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