CN111646338B - Construction elevator prevents weighing down breaker and changes auxiliary device - Google Patents
Construction elevator prevents weighing down breaker and changes auxiliary device Download PDFInfo
- Publication number
- CN111646338B CN111646338B CN202010544502.6A CN202010544502A CN111646338B CN 111646338 B CN111646338 B CN 111646338B CN 202010544502 A CN202010544502 A CN 202010544502A CN 111646338 B CN111646338 B CN 111646338B
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- fixedly connected
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- sliding
- cage
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- 238000010276 construction Methods 0.000 title claims abstract description 22
- 238000005303 weighing Methods 0.000 title claims description 3
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 230000001133 acceleration Effects 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 claims description 46
- 230000000670 limiting effect Effects 0.000 claims description 18
- 238000004804 winding Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000003028 elevating effect Effects 0.000 claims 2
- 239000000725 suspension Substances 0.000 abstract description 14
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000009435 building construction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
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- 238000006243 chemical reaction Methods 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
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- 229940088597 hormone Drugs 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/26—Positively-acting devices, e.g. latches, knives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/06—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed electrical
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The invention discloses a replacement auxiliary device for an anti-falling safety device of a construction elevator, which relates to the technical field of building construction and comprises a base, wherein the upper end of the base is fixedly connected with a lifting rod, the side wall of the lifting rod is provided with a sliding groove, a lifting block is slidably connected in the sliding groove, the side wall of the lifting block is fixedly connected with a sliding plate, the lower end of the sliding plate is fixedly connected with a suspension cage, the side wall of the lifting rod is fixedly connected with a lifting mechanism, the side wall of the lifting rod is fixedly connected with a first fixed pulley, when the suspension cage of the elevator breaks down and falls down, the falling speed of the suspension cage can show the trend of acceleration, the speed detection is realized through an acceleration sensor, after the detection is successful, a signal is transmitted to a control panel unit, and the limit effect on the sliding block is lost through the matching use of the control panel unit and a limit mechanism, so that the positioning mechanism realizes the positioning of the elevator.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to an auxiliary device for replacing an anti-falling safety device of a construction elevator.
Background
The construction elevator is a construction elevator for buildings, also can be called as an outdoor elevator, is a construction machine for transporting workers or articles up and down along a guide rail by using a suspension cage, is mainly used for the construction of internal and external decoration of high-rise buildings, is used as important vertical transportation equipment in the construction of the high-rise buildings, has high use frequency, and is an important part of the construction elevator, when the suspension cage of the elevator breaks down and falls down and the falling speed reaches the action speed of the anti-falling safety device, the anti-falling safety device can automatically open a braking part to stop the suspension cage on the guide rail frame, thereby greatly improving the safety coefficient of the elevator, and as some safety devices for accurate braking are easy to be damaged in the braking process, the damaged safety device part needs to be replaced and installed in time, the occurrence of unnecessary danger is avoided, the traditional safety devices are welded together, the disassembly process is difficult to carry out, a new safety device can be replaced after the disassembly is finished, and for devices which are not damaged, the safety device and damaged elements can be disassembled and replaced together, so that the replacement loss is large, and therefore the auxiliary device for replacing the anti-falling safety device of the construction elevator is provided, and the problems are solved.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a replacement auxiliary device for an anti-falling safety device of a construction elevator.
In order to achieve the purpose, the invention adopts the following technical scheme:
an auxiliary device for replacing an anti-falling safety device of a construction elevator comprises a base, wherein the upper end of the base is fixedly connected with a lifting rod, the side wall of the lifting rod is provided with a sliding groove, a lifting block is connected in the sliding groove in a sliding manner, the side wall of the lifting block is fixedly connected with a first sliding plate, the lower end of the first sliding plate is fixedly connected with a cage, the side wall of the lifting rod is fixedly connected with a lifting mechanism, the side wall of the lifting rod is fixedly connected with a first fixed pulley, the side wall of the upper end of the lifting rod is provided with a sliding hole in a penetrating manner, the free end of the lifting mechanism penetrates through the inner side wall of the sliding hole and is fixedly connected with the upper end of the lifting block, the side wall of the cage is fixedly connected with an installation block, the installation block and the side wall of the cage are provided with a first pull rope in a penetrating manner, the side wall of the cage is fixedly connected with a second fixed pulley, and the first pull rope is wound on the second fixed pulley, the upper end side wall of the installation block is fixedly connected with an installation box, the inner side wall of the installation box is fixedly connected with an acceleration sensor, the inner top of the installation box is fixedly connected with a limiting mechanism, the lower end side wall of the first sliding plate is fixedly provided with a second fixing plate, the side wall of the second fixing plate is connected with the outer side wall of the installation block in a penetrating and sliding manner, the installation block is internally provided with a positioning mechanism, the end part of the limiting mechanism is tightly abutted against the end part of the positioning mechanism, the side wall of the positioning mechanism is fixedly connected with a first pull rope, the lower end side wall of the first sliding plate is fixedly connected with a suspension cage, the inner side wall of the suspension cage is fixedly provided with a second servo motor, the second servo motor is fixedly connected with the other end of the first pull rope, the side wall of the suspension cage is fixedly connected with two dismounting mechanisms, and the outer side wall of the installation block is symmetrically provided with a second positioning groove, the end parts of the two disassembly mechanisms are respectively and tightly propped against the corresponding second positioning grooves.
Preferably, the lifting mechanism comprises a first fixing plate fixedly connected to the side wall of the lifting rod, a first servo motor is fixedly connected to the first fixing plate, a winding roller is fixedly connected to the end part of the first servo motor, a second pull rope is wound on the winding roller, and the second pull rope is fixedly connected with the side wall of the upper end of the lifting block through a first fixed pulley
Preferably, the limiting mechanism comprises an electric push rod fixedly connected to the top in the installation box, a second sliding plate is fixedly connected to the telescopic end of the electric push rod, a limiting block is fixedly connected to the lower end of the second sliding plate, and the end portion of the limiting block penetrates through the side wall of the installation block and abuts against the inner side wall of the positioning mechanism.
Preferably, positioning mechanism includes the sliding block of sliding connection on the installation piece inside wall, the lateral wall fixedly connected with locating piece of sliding block, the lateral wall and the lateral wall sliding connection of installation piece are run through to the tip of locating piece, through first spring coupling between sliding block and the installation piece, the lateral wall of sliding block and the end fixed connection of first stay cord, first constant head tank has been seted up to the upper end lateral wall of sliding block, the tip of stopper offsets tightly with the lateral wall of first constant head tank.
Preferably, the acceleration sensor is electrically connected with a control panel on the inner side wall of the installation box, and the control panel is electrically connected with the electric push rod.
Preferably, the bottom of the base is provided with anti-skid lines.
Preferably, the first spring is an elastic spring and is made of stainless steel.
Preferably, the second pull rope is made of a steel wire material.
Preferably, the mounting box is connected to the side wall of the mounting block through screw threads.
The invention has the beneficial effects that: according to the elevator cage positioning device, when the elevator cage breaks down and falls down, the falling speed of the elevator cage tends to show the acceleration, the speed is detected through the acceleration sensor, after the detection is successful, a signal is transmitted to the control panel unit, and the limiting effect on the sliding block is lost through the matched use of the control panel unit and the limiting mechanism, so that the positioning mechanism realizes the positioning of the elevator, the casualties of articles and personnel are avoided, and through the arrangement of the structure, the positioning effect is accurately realized, and the casualties are avoided;
because stop gear, install bin threaded connection are on the installation piece, consequently can take out install bin and stop gear fast, and the condition that takes place to damage when the fall protector founds and need change is, can dismantle noble part fast, has reduced the change cost effectively, has reduced the unnecessary loss.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of a portion a of the present invention.
Fig. 3 is an enlarged view of part B of the present invention.
Fig. 4 is an enlarged view of the portion C of the present invention.
Fig. 5 is a schematic block diagram of the present invention.
Reference numbers in the figures: the device comprises a base 1, a lifting rod 2, a sliding groove 3, a first servo motor 4, a suspension cage 5, a second servo motor 6, a through hole 7, a second pull rope 8, a sliding hole 9, a first fixed pulley 10, a first sliding plate 11, a first pull rope 12, a second fixed pulley 13, a sliding block 14, a mounting block 15, a positioning block 16, a first positioning groove 17, a limiting block 18, a second sliding plate 19, an acceleration sensor 20, a mounting box 21, an electric push rod 22, a second fixing plate 23, a first spring 24, a fixing block 25, a threaded wire 26, a second positioning groove 27 and a lifting block 28.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, an auxiliary device for replacing an anti-falling safety device of a construction elevator comprises a base 1, wherein the upper end of the base 1 is fixedly connected with a lifting rod 2, the side wall of the lifting rod 2 is provided with a sliding groove 3, the sliding groove 3 is internally and slidably connected with a lifting block 28, the side wall of the lifting block 28 is fixedly connected with a first sliding plate 11, the lower end of the first sliding plate 11 is fixedly connected with a suspension cage 5, the side wall of the lifting rod 2 is fixedly connected with a lifting mechanism, the lifting mechanism comprises a first fixing plate fixedly connected to the side wall of the lifting rod 2, the first fixing plate is fixedly connected with a first servo motor 4, the end part of the first servo motor 4 is fixedly connected with a winding roller, the winding roller is wound with a second pull rope 8, and the second pull rope 8 is fixedly connected with the upper side wall of the lifting block 28 through a first fixing pulley 10;
the side wall of the lifting rod 2 is fixedly connected with a first fixed pulley 10, the upper end side wall of the lifting rod 2 is provided with a sliding hole 9 in a penetrating way, the free end of the lifting mechanism penetrates through the inner side wall of the sliding hole 9 and is fixedly connected with the upper end of a lifting block 28, the side wall of the cage 5 is fixedly connected with an installation block 15, the installation block 15 and the side wall of the cage 5 are provided with a first pull rope 12 in a penetrating way, the side wall of the cage 5 is fixedly connected with a second fixed pulley 13, the first pull rope 12 is wound on the second fixed pulley 13, the upper end side wall of the installation block 15 is fixedly connected with an installation box 21, the inner side wall of the installation box 21 is fixedly connected with an acceleration sensor 20, the acceleration sensor 20 is electrically connected with a control panel on the inner side wall of the installation box 21, the control panel is electrically connected with an electric push rod 22, when the acceleration sensor 20 senses speed change, the acceleration sensor unit inside can transmit signals to a signal conversion unit, the signals realize the conversion of the signals, the control of the control panel unit and the control of the electric push rod 22, so that when the suspension cage hormone falls down, the variation of the sensing speed can be accurately realized, and meanwhile, the automatic control function can be realized;
the limiting mechanism is fixedly connected to the inner top of the installation box 21, the installation box 21 is connected to the side wall of the installation block 15 through screw threads, so that the installation box 21 is convenient to disassemble and replace, the installation box 21 and an original inside the installation box are taken out, waste caused by directly replacing the whole safety device is effectively avoided, and expenditure is saved;
the limiting mechanism comprises an electric push rod 22 fixedly connected to the inner top of the installation box 21, the telescopic end of the electric push rod 22 is fixedly connected with a second sliding plate 19, the lower end of the second sliding plate 19 is fixedly connected with a limiting block 18, and the end part of the limiting block 18 penetrates through the side wall of the installation block 15 and is abutted against the inner side wall of the positioning mechanism;
a second fixing plate 23 is fixed on the side wall of the lower end of the first sliding plate 11, the side wall of the second fixing plate 23 is in penetrating sliding connection with the outer side wall of the mounting block 15, a positioning mechanism is installed in the mounting block 15 and comprises a sliding block 14 which is in sliding connection with the inner side wall of the mounting block 15, a positioning block 16 is fixedly connected with the side wall of the sliding block 14, the end part of the positioning block 16 penetrates through the side wall of the mounting block 15 and is in sliding connection with the side wall of the mounting block, the sliding block 14 is connected with the mounting block 15 through a first spring 24, the first spring 24 is an elastic spring and is made of stainless steel, the side wall of the sliding block 14 is fixedly connected with the end part of the first pull rope 12, the second pull rope 8 is made of steel wire, a first positioning groove 17 is formed in the side wall of the upper end of the sliding block 14, and the end part of the limiting block 18 is abutted against the side wall of the first positioning groove 17;
stop gear's tip and positioning mechanism's tip offset tightly, positioning mechanism's the first stay cord 12 of lateral wall fixedly connected with, the lower extreme lateral wall fixedly connected with cage 5 of first sliding plate 11, the inside wall fixed mounting of cage 5 has second servo motor 6, the other end fixed connection of second servo motor 6 and first stay cord 12, two disassembly body of cage 5's lateral wall fixedly connected with, the lateral wall symmetry of installation piece 15 is provided with second constant head tank 27, two disassembly body's tip offsets tightly rather than the second constant head tank 27 that corresponds respectively, the bottom of base 1 is provided with anti-skidding line.
The working principle is as follows: when the lifting device is used, an article is placed on the suspension cage 5, the first servo motor 4 is started, the first servo motor 4 drives the winding roller to rotate, the wire winding work of the second pull rope 8 is achieved, the pulling effect on the lifting block 28 is achieved in the wire winding process, the first sliding plate 11 is driven to move synchronously in the upward moving process of the lifting block 28, the synchronous movement of the suspension cage 5 is achieved in the moving process of the first sliding plate 11, and the lifting work is achieved;
in the process of long-term use, when a cage of the elevator breaks down and falls down, the acceleration sensor unit in the acceleration sensor 20 detects the speed change, then transmits a signal to the signal conversion unit in the acceleration sensor 20, the signal conversion unit transmits the signal to the control panel unit, the control panel unit starts the electric push rod 22, the electric push rod 22 drives the second sliding plate 19 to move, the synchronous movement of the limit block 18 is realized in the movement process of the second sliding plate 19, the limit function of the limit block 18 is lost in the movement process of the limit block 18, then due to the elastic force of the first spring 24, the pushing work of the sliding block 14 is realized, further the synchronous pushing of the locating block 16 is realized, the locating block 16 is moved to be clamped with the through hole 7, and further the locating function of the cage is realized, the damage to the article is avoided;
in the long-term use process, because the gravity that the locating piece 16 bore is great, therefore damage easily, need change new breaker usually, and then make the building expense grow, therefore we have realized taking out the whole of protector through rotating screw thread 26 on the basis of this design, because install bin 21 and installation piece 15 threaded connection, realized the dismantlement replacement to valuable part in the breaker simultaneously, and then reduced the expense of expense effectively, avoid unnecessary extravagant, this scheme is changed on the research basis of this design, through some simple connected modes, the expense of expense has been reduced as far as.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides a construction elevator prevents weighing down breaker and changes auxiliary device, includes base (1), its characterized in that, the upper end fixedly connected with lifter (2) of base (1), sliding tray (3) have been seted up to the lateral wall of lifter (2), sliding tray (3) sliding connection has elevator block (28), the lateral wall fixedly connected with first sliding plate (11) of elevator block (28), the lower extreme fixedly connected with cage (5) of first sliding plate (11), the lateral wall fixedly connected with elevating system of lifter (2), the lateral wall fixedly connected with first fixed pulley (10) of lifter (2), the upper end lateral wall of lifter (2) is run through and is provided with sliding hole (9), the free end of elevating system run through the inside wall of sliding hole (9) and with the upper end fixed connection of elevator block (28), the side wall of the cage (5) is fixedly connected with an installation block (15), the installation block (15) and the side wall of the cage (5) are provided with a first pull rope (12) in a penetrating mode, the side wall of the cage (5) is fixedly connected with a second fixed pulley (13), the first pull rope (12) is wound on the second fixed pulley (13), the side wall of the upper end of the installation block (15) is fixedly connected with an installation box (21), the installation box (21) is connected onto the side wall of the installation block (15) through screw threads, the inner side wall of the installation box (21) is fixedly connected with an acceleration sensor (20), the inner top of the installation box (21) is fixedly connected with a limiting mechanism, the side wall of the lower end of the first sliding plate (11) is fixedly connected with a second fixing plate (23), and the side wall of the second fixing plate (23) and the outer side wall of the installation block (15) are in a penetrating sliding connection mode, install positioning mechanism in installation piece (15), stop gear's tip offsets tightly with positioning mechanism's tip, positioning mechanism's the first stay cord of lateral wall fixedly connected with (12), the lower extreme lateral wall fixedly connected with cage (5) of first sliding plate (11), the inside wall fixed mounting of cage (5) has second servo motor (6), the other end fixed connection of second servo motor (6) and first stay cord (12), two disassembly body of lateral wall fixedly connected with of cage (5), the lateral wall symmetry of installation piece (15) is provided with second constant head tank (27), two disassembly body's tip offsets tightly rather than second constant head tank (27) that correspond respectively.
2. The construction elevator anti-falling safety device replacement auxiliary device is characterized in that the lifting mechanism comprises a first fixing plate fixedly connected to the side wall of the lifting rod (2), a first servo motor (4) is fixedly connected to the first fixing plate, a winding roller is fixedly connected to the end part of the first servo motor (4), a second pull rope (8) is wound on the winding roller, and the second pull rope (8) is fixedly connected with the upper end side wall of the lifting block (28) through a first fixed pulley (10).
3. The auxiliary device for replacing the anti-falling safety device of the construction elevator is characterized in that the limiting mechanism comprises an electric push rod (22) fixedly connected to the inner top of the installation box (21), a second sliding plate (19) is fixedly connected to the telescopic end of the electric push rod (22), a limiting block (18) is fixedly connected to the lower end of the second sliding plate (19), and the end of the limiting block (18) penetrates through the side wall of the installation block (15) and abuts against the inner side wall of the positioning mechanism.
4. The replacement auxiliary device for the anti-falling safety device of the construction elevator as claimed in claim 3, wherein the positioning mechanism comprises a sliding block (14) slidably connected to the inner side wall of the mounting block (15), a positioning block (16) is fixedly connected to the side wall of the sliding block (14), the end of the positioning block (16) penetrates through the side wall of the mounting block (15) and is slidably connected to the side wall of the mounting block, the sliding block (14) is connected to the mounting block (15) through a first spring (24), the side wall of the sliding block (14) is fixedly connected to the end of the first pull rope (12), a first positioning groove (17) is formed in the side wall of the upper end of the sliding block (14), and the end of the positioning block (18) abuts against the side wall of the first positioning groove (17).
5. The construction elevator anti-falling safety device replacement auxiliary device as claimed in claim 2, wherein the acceleration sensor (20) is electrically connected with a control panel on the inner side wall of the installation box (21), and the control panel is electrically connected with the electric push rod (22).
6. The construction elevator fall arrest safety device replacement assistance device according to claim 1, characterized in that the base (1) is provided with anti-skid threads at its bottom.
7. The construction elevator fall arrest safety device change auxiliary device according to claim 4, characterized in that the first spring (24) is a resilient spring and it is made of stainless steel material.
8. A construction elevator fall arrest safety device change auxiliary device according to claim 2, characterized in that the second pull cord (8) is made of steel wire material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010544502.6A CN111646338B (en) | 2020-06-15 | 2020-06-15 | Construction elevator prevents weighing down breaker and changes auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010544502.6A CN111646338B (en) | 2020-06-15 | 2020-06-15 | Construction elevator prevents weighing down breaker and changes auxiliary device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111646338A CN111646338A (en) | 2020-09-11 |
| CN111646338B true CN111646338B (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010544502.6A Expired - Fee Related CN111646338B (en) | 2020-06-15 | 2020-06-15 | Construction elevator prevents weighing down breaker and changes auxiliary device |
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| CN (1) | CN111646338B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114105037A (en) * | 2021-11-25 | 2022-03-01 | 长春光华学院 | Electromechanical lifting system |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3739654A1 (en) * | 1987-11-23 | 1989-06-01 | Freisl Paul Peter | Automatic brake device for cages |
| CN2072962U (en) * | 1990-08-31 | 1991-03-13 | 范林涛 | Antomatic drop-proof apparatus for elevator |
| CN105905733B (en) * | 2016-06-27 | 2017-12-29 | 江苏永晋特种设备检测有限公司 | A kind of construction hoist falling-proof insurance system |
| CN109179134B (en) * | 2018-10-31 | 2020-04-14 | 梯联网（贵州）科技股份有限公司 | Device combining advertisement and elevator falling prevention prompt |
| CN209367596U (en) * | 2019-01-07 | 2019-09-10 | 宏林建设工程集团有限公司 | A kind of building-construction lifting equipment |
| CN210558733U (en) * | 2019-04-30 | 2020-05-19 | 广州巧天科技有限公司 | Anti-falling hanging basket device |
| CN111056482A (en) * | 2019-11-01 | 2020-04-24 | 西安科技成果转化工程有限公司 | Protection device of lifting equipment |
| CN110697539B (en) * | 2019-11-11 | 2021-01-01 | 上海奉贤德福钢制品有限公司 | Auxiliary braking mechanism for preventing elevator from falling |
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2020
- 2020-06-15 CN CN202010544502.6A patent/CN111646338B/en not_active Expired - Fee Related
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