CN114348901A - Safe hoisting equipment for building construction - Google Patents
Safe hoisting equipment for building construction Download PDFInfo
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- CN114348901A CN114348901A CN202210012416.XA CN202210012416A CN114348901A CN 114348901 A CN114348901 A CN 114348901A CN 202210012416 A CN202210012416 A CN 202210012416A CN 114348901 A CN114348901 A CN 114348901A
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- 238000009435 building construction Methods 0.000 title claims abstract description 24
- 238000003860 storage Methods 0.000 claims abstract description 42
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 230000004224 protection Effects 0.000 claims abstract description 18
- 230000009979 protective mechanism Effects 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims description 33
- 238000003825 pressing Methods 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000004566 building material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention discloses safe hoisting equipment for building construction, which belongs to the technical field of building construction and comprises a supporting bottom plate, wherein a supporting top plate is arranged on one side of the supporting bottom plate at intervals, limiting side plates corresponding to the supporting top plate are arranged at two ends of the supporting bottom plate, a storage box is arranged above the supporting bottom plate, a first traction rope is arranged at one end, away from the supporting bottom plate, of the storage box, a limiting slide rail is arranged on the side surface of each limiting side plate, a plurality of braking toothed plates are arranged at intervals on the side surface of each limiting slide rail, and protective mechanisms for matching the braking toothed plates and the limiting slide rails to limit and prevent the storage box from falling are arranged at two ends of the storage box; when the lifting device is used, the protection mechanism and the driving mechanism are matched with each other to play a role in safety protection of the lifting device, so that even if the lifting device is broken by the first traction rope or the second traction rope, the phenomenon that goods fall cannot occur, and the lifting device is safer to use.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to safe hoisting equipment for building construction.
Background
The building construction refers to production activities in an implementation stage of engineering construction according to target planning, the building construction refers to the construction process of various buildings, and also refers to the process of changing various lines on a design drawing into a real object, and lifting equipment is required to be used for transporting building materials in the building construction process;
the traditional hoisting equipment comprises components such as a traction rope, a winding wheel, a driver, a storage box and the like, and has the advantages that goods such as reinforcing steel bars, stone piers and the like can be transported;
the iron chain on the lifting equipment is easy to break due to abrasion when in use, however, the traditional lifting equipment is lack of a safety protection structure, so that the phenomenon that goods fall off due to the breakage of the iron chain can be caused to the lifting equipment, potential safety hazards exist in the use of the lifting equipment, and the popularization and the use of the lifting equipment are not facilitated.
Disclosure of Invention
The invention aims to provide a safety hoisting device for building construction, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a safe equipment of lifting by crane for construction, includes supporting baseplate, and one side interval of supporting baseplate is provided with the supporting roof, and the both ends of supporting baseplate are provided with and support the corresponding spacing curb plate of roof, and the top of supporting baseplate is provided with the storage tank, and the one end that the supporting baseplate was kept away from to the storage tank is provided with first haulage rope, the side of spacing curb plate is provided with spacing slide rail, and the side interval of spacing slide rail is provided with a plurality of braking toothed plate, and the both ends of storage tank are provided with and are used for coordinating the protection mechanism that braking toothed plate and spacing slide rail played spacing anti-falling effect to the storage tank, and the side of supporting roof is provided with the actuating mechanism who is used for highly playing the regulating action to the storage tank.
As a further scheme of the invention: the protection mechanism comprises a first limiting plate, a transmission plate corresponding to the first traction rope is arranged on one side of the first limiting plate at intervals, a first elastic driving piece used for driving the transmission plate to be far away from the first limiting plate is arranged on the side face of the first limiting plate, one end of the transmission plate is provided with a second limiting plate connected with the first limiting plate in a sliding mode, one end, far away from the transmission plate, of the second limiting plate is rotatably connected with an anti-falling toothed plate, and a third limiting plate used for limiting the anti-falling toothed plate is arranged at one end, close to the anti-falling toothed plate, of the second limiting plate.
As a still further scheme of the invention: the protection mechanism further comprises a fourth limiting plate, the fourth limiting plate is arranged at one end, far away from the storage box, of the first limiting plate, an elastic buffer part is arranged at one end, far away from the first limiting plate, of the fourth limiting plate, a microswitch is arranged at one end, far away from the fourth limiting plate, of the elastic buffer part, and an extrusion plate corresponding to the microswitch is arranged at one end of the second limiting plate.
As a still further scheme of the invention: the driving mechanism comprises a mounting base plate, a driving assembly used for adjusting the height of the storage box is arranged on the side face of the mounting base plate, and a protective cover used for reducing noise is further arranged on the side face of the mounting base plate.
As a still further scheme of the invention: the driving assembly comprises a winding drum, a second traction rope corresponding to the first traction rope is arranged on the winding drum, and drivers for driving the braking assembly are arranged at two ends of the mounting bottom plate.
As a still further scheme of the invention: and two ends of the winding drum are fixedly connected with brake gears.
As a still further scheme of the invention: one end of the protective cover, which is far away from the mounting base plate, is provided with a brake assembly which is used for being matched with a protective mechanism to brake the winding drum.
As a still further scheme of the invention: the braking assembly comprises a pressing plate, elastic anti-slip plates corresponding to the winding drum are arranged on the side face of the pressing plate, seventh limiting plates are arranged at two ends of the pressing plate, one end of each seventh limiting plate, far away from the pressing plate, is connected with a sixth limiting plate in a sliding mode, one side of each seventh limiting plate is provided with a fifth limiting plate at intervals, one end of each fifth limiting plate is provided with a second elastic driving piece used for driving the seventh limiting plate to be far away from the fifth limiting plate, a second driving plate is arranged on the side face of the pressing plate, one side of the second driving plate is provided with a first driving plate used for matching the second driving plate to drive the elastic anti-slip plates to be close to the winding drum so as to achieve the effect of braking on the winding drum.
As a still further scheme of the invention: the second elastic driving piece is a spring or a metal elastic piece.
As a still further scheme of the invention: one end of the storage box, which is close to the supporting bottom plate, is provided with an elastic buffer plate for reducing noise.
Compared with the prior art, the invention has the beneficial effects that: the lifting device is simple in structure and convenient to use, the lifting device is protected safely through the mutual matching of the protection mechanism and the driving mechanism when the lifting device is used, and the phenomenon that goods fall cannot happen even if the lifting device is broken by the first traction rope or the second traction rope, so that the lifting device is safer to use and is worthy of popularization and use.
Drawings
FIG. 1 is a schematic structural diagram of a safety hoisting device for building construction;
FIG. 2 is a schematic structural diagram of a protection mechanism in a safety hoisting device for building construction;
fig. 3 is a schematic structural diagram of a second limiting plate in the safety hoisting equipment for building construction;
FIG. 4 is a schematic structural diagram of a driving mechanism in a safety hoisting device for building construction;
in the figure: 1-elastic buffer plate, 2-limit side plate, 3-protection mechanism, 4-first traction rope, 5-braking toothed plate, 6-limit slide rail, 7-driving mechanism, 8-support top plate, 9-storage box, 10-support bottom plate, 30-first limit plate, 31-anti-falling toothed plate, 32-second limit plate, 33-third limit plate, 34-fourth limit plate, 35-extrusion plate, 36-microswitch, 37-elastic buffer piece, 38-transmission plate, 39-first elastic driving piece, 71-driving component, 72-protective cover, 73-braking component, 74-installation bottom plate, 711-driver, 712-braking gear, 713-winding drum, 714-second traction rope, 731-fifth limiting plate, 732-sixth limiting plate, 733-seventh limiting plate, 734-first driving plate, 735-second driving plate, 736-pressing plate, 737-elastic anti-skid plate and 738-second elastic driving piece.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed.
The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Referring to fig. 1, the embodiment provides a safety hoisting device for building construction, which includes a supporting base plate 10, a supporting top plate 8 is arranged at one side of the supporting base plate 10 at intervals, limiting side plates 2 corresponding to the supporting top plate 8 are arranged at two ends of the supporting base plate 10, a storage box 9 is arranged above the supporting base plate 10, a first traction rope 4 is arranged at one end, away from the supporting base plate 10, of the storage box 9, the storage box 9 is in a suspended state during normal use, at the moment, the first traction rope 4 can keep a tensioning state due to the gravity action of the storage box 9, limiting slide rails 6 are arranged on the side surfaces of the limiting side plates 2, a plurality of braking toothed plates 5 are arranged at intervals on the side surfaces of the limiting slide rails 6, protective mechanisms 3 for cooperating with the braking toothed plates 5 and the limiting slide rails 6 to limit and prevent falling of the storage box 9 are arranged at two ends of the storage box 9, and a driving mechanism 7 for adjusting the height of the storage box 9 is arranged on the side surface of the supporting top plate 8;
referring to fig. 2 and 3, in order to make the use of the protection mechanism 3 more reliable, in this embodiment, preferably, the protection mechanism 3 includes a first limiting plate 30, a driving plate 38 corresponding to the first traction rope 4 is disposed at an interval on one side of the first limiting plate 30, a first elastic driving part 39 for driving the driving plate 38 to move away from the first limiting plate 30 is disposed on a side surface of the first limiting plate 30, the first elastic driving part 39 is a spring or a metal elastic sheet, a second limiting plate 32 slidably connected to the first limiting plate 30 is disposed at one end of the driving plate 38, an anti-falling toothed plate 31 is rotatably connected to one end of the second limiting plate 32 away from the driving plate 38, a center of gravity of the anti-falling toothed plate 31 is located at one end of the principle limiting slide rail 6, and a third limiting plate 33 for limiting the anti-falling toothed plate 31 is disposed at one end of the second limiting plate 32 of the bearing close to the anti-falling toothed plate 31;
referring to fig. 2 and fig. 3, in order to facilitate a user to perform linkage control on the driving mechanism 7 through the protection mechanism 3, in this embodiment, preferably, the protection mechanism 3 further includes a fourth limiting plate 34, the fourth limiting plate 34 is disposed at an end of the first limiting plate 30 away from the storage box 9, an elastic buffer 37 is disposed at an end of the fourth limiting plate 34 away from the first limiting plate 30, the elastic buffer 37 is made of rubber or silica gel, a micro switch 36 is disposed at an end of the elastic buffer 37 away from the fourth limiting plate 34, and a squeezing plate 35 corresponding to the micro switch 36 is disposed at an end of the second limiting plate 32;
in another embodiment, the protection mechanism 3 includes a first limiting plate 30, a first fixing plate of an "Contraband" shape structure is disposed on a side surface of the first limiting plate 30, an electric telescopic rod is disposed at one end of the first fixing plate, which is far away from the first limiting plate 30, a second fixing plate is disposed at a telescopic end of the electric telescopic rod, a first controller is disposed at the top of the first limiting plate 30, and when the first controller detects that the storage box 9 is in a falling state, the first controller controls the electric telescopic rod to extend, so that the storage box 9 is locked by the cooperation of the second fixing plate and the limiting slide rail 6;
referring to fig. 4, in an embodiment, in order to improve the driving effect of the driving mechanism 7, in this embodiment, preferably, the driving mechanism 7 includes a mounting base plate 74, a driving assembly 71 for adjusting the height of the storage box 9 is disposed on a side surface of the mounting base plate 74, and a protective cover 72 for reducing noise is further disposed on a side surface of the mounting base plate 74;
referring to fig. 4, in an embodiment, in order to improve the winding effect of the driving assembly 71, in this embodiment, preferably, the driving assembly 71 includes a winding drum 713, a second traction rope 714 corresponding to the first traction rope 4 is disposed on the winding drum 713, two ends of the mounting base plate 74 are provided with drivers 711 for driving the braking assembly 73, the drivers 711 are motors, and two ends of the winding drum 713 are fixedly connected with braking gears 712 for braking;
in another embodiment, the driving assembly 71 includes a winding drum 713, a second traction rope 714 corresponding to the first traction rope 4 is disposed on the winding drum 713, a driver 711 for driving the braking assembly 73 is disposed at one end of the mounting base plate 74, the driver 711 is a pneumatic motor, and both ends of the winding drum 713 are fixedly connected with a third fixing plate by welding;
referring to fig. 4, in an embodiment, in order to make the function of the driving mechanism 7 more functional, in this embodiment, preferably, an end of the protecting cover 72 away from the mounting base plate 74 is provided with a braking assembly 73 for cooperating with the protecting mechanism 3 to brake the winding drum 713;
referring to fig. 4, in an embodiment, in order to improve the linkage braking effect of the braking assembly 73, in the embodiment, preferably, the braking assembly 73 includes a pressing plate 736, an elastic anti-slip plate 737 corresponding to the winding drum 713 is disposed on a side surface of the pressing plate 736, seventh limiting plates 733 are disposed at two ends of the pressing plate 736, a sixth limiting plate 732 is slidably connected to one end of the seventh limiting plate 733 away from the pressing plate 736, fifth limiting plates 731 are disposed at intervals on one side of the seventh limiting plate 733, a second elastic driving member 738 for driving the seventh limiting plate 733 away from the fifth limiting plate 731 is disposed at one end of the fifth limiting plate 731, a second driving plate 735 is disposed on a side surface of the pressing plate 736, a first driving plate 734 for driving the elastic anti-skid plate 737 to be close to the winding drum 713 to brake the winding drum 713 is arranged at one side of the second driving plate 735 at intervals;
in order to improve the driving effect of the second elastic driving element 738, in this embodiment, it is preferable that the second elastic driving element 738 is a spring or a metal elastic sheet, the first driving plate 734 and the second driving plate 735 are both electromagnets, the first driving plate 734, the second driving plate 735, and the driver 711 are controlled by a PLC, the PLC is used in the prior art, the micro switch 36 is electrically connected with the PLC, and the micro switch 36 and the PLC are used in a matching manner in the prior art;
in another embodiment, the braking assembly 73 includes a fourth fixing plate, two ends of the fourth fixing plate are provided with an electric hydraulic cylinder, and a telescopic end of the electric hydraulic cylinder is provided with a fifth fixing plate for cooperating with the third fixing plate to brake the winding drum 713;
referring to fig. 1, in order to further avoid the storage box 9 from being accidentally dropped to generate severe impact, in this embodiment, preferably, an elastic buffer plate 1 for reducing noise is disposed at one end of the storage box 9 close to the supporting bottom plate 10, and the elastic buffer plate 1 is made of rubber or silica gel.
The working principle and the using process of the invention are as follows: when the lifting device is used, building materials to be lifted are placed in the storage box 9, and the second traction rope 714 is wound through the winding drum 713, so that the height of the storage box 9 is correspondingly lifted, and the lifting of the building materials is realized;
when the first traction rope 4 or the second traction rope 714 (or both) are broken due to abrasion in the lifting process of the equipment, the first traction rope 4 loses the tensioning state, at the moment, the transmission plate 38 moves towards the direction far away from the first limiting plate 30 under the driving action of the first elastic driving piece 39, so that the anti-falling toothed plate 31 is inserted between the two braking toothed plates 5, when the storage box 9 falls, the third limiting plate 33 plays a limiting role on the anti-falling toothed plate 31 to block the anti-falling toothed plate 31 from rotating, further falling of the storage box 9 is blocked, and the storage box 9 is fixed;
in addition, when the transmission plate 38 moves away from the first limiting plate 30 under the driving action of the first elastic driving element 39, the pressing plate 35 presses the micro switch 36, at this time, the micro switch 36 operates, the PLC control driver 711 is in a power-off state through the operation of the micro switch 36, and meanwhile, the PLC controls the first driving plate 734 and the second driving plate 735 to repel each other, so that the pressing plate 736 moves towards the winding drum 713, and the pressing plate 736 is matched with the elastic anti-slip plate 737 and the braking gear 712 to realize quick and reliable fixing of the winding drum 713, thereby avoiding further damage caused by continuous winding or releasing of the winding drum 713;
thereby carry out safety protection to storage tank 9 through mutually supporting of multiple structures, make storage tank 9 also can not take place to turn on one's side or fall when first haulage rope 4 or second haulage rope 714 (or both are simultaneously) breaks down to avoid appearing the goods phenomenon of falling, make the use of lifting by crane equipment safer, be worth promoting and using.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a safe equipment of lifting by crane for construction, includes supporting baseplate, and one side interval of supporting baseplate is provided with the roof support, and the both ends of supporting baseplate are provided with the spacing curb plate corresponding with the roof support, and the top of supporting baseplate is provided with the storage tank, and the one end that supporting baseplate was kept away from to the storage tank is provided with first haulage rope, its characterized in that: the side of spacing curb plate is provided with spacing slide rail, and the side interval of spacing slide rail is provided with a plurality of braking pinion rack, and the both ends of storage tank are provided with and are used for cooperating braking pinion rack and spacing slide rail to play spacing protection machanism who prevents weighing down the effect to the storage tank, and the side of supporting the roof is provided with the actuating mechanism who is used for highly playing the regulating action to the storage tank.
2. The safety hoisting apparatus for building construction according to claim 1, wherein: the protection mechanism comprises a first limiting plate, a transmission plate corresponding to the first traction rope is arranged on one side of the first limiting plate at intervals, a first elastic driving piece used for driving the transmission plate to be far away from the first limiting plate is arranged on the side face of the first limiting plate, one end of the transmission plate is provided with a second limiting plate connected with the first limiting plate in a sliding mode, one end, far away from the transmission plate, of the second limiting plate is rotatably connected with an anti-falling toothed plate, and a third limiting plate used for limiting the anti-falling toothed plate is arranged at one end, close to the anti-falling toothed plate, of the second limiting plate.
3. The safety hoisting apparatus for building construction according to claim 2, wherein: the protection mechanism further comprises a fourth limiting plate, the fourth limiting plate is arranged at one end, far away from the storage box, of the first limiting plate, an elastic buffer part is arranged at one end, far away from the first limiting plate, of the fourth limiting plate, a microswitch is arranged at one end, far away from the fourth limiting plate, of the elastic buffer part, and an extrusion plate corresponding to the microswitch is arranged at one end of the second limiting plate.
4. The safety hoisting apparatus for building construction according to claim 3, wherein: the driving mechanism comprises a mounting base plate, a driving assembly used for adjusting the height of the storage box is arranged on the side face of the mounting base plate, and a protective cover used for reducing noise is further arranged on the side face of the mounting base plate.
5. The safety hoisting apparatus for building construction according to claim 4, wherein: the driving assembly comprises a winding drum, a second traction rope corresponding to the first traction rope is arranged on the winding drum, and drivers for driving the braking assembly are arranged at two ends of the mounting bottom plate.
6. The safety hoisting apparatus for building construction according to claim 5, wherein: and two ends of the winding drum are fixedly connected with brake gears.
7. The safety hoisting apparatus for building construction according to claim 6, wherein: one end of the protective cover, which is far away from the mounting base plate, is provided with a brake assembly which is used for being matched with a protective mechanism to brake the winding drum.
8. The safety hoisting apparatus for building construction according to claim 7, wherein: the braking assembly comprises a pressing plate, elastic anti-slip plates corresponding to the winding drum are arranged on the side face of the pressing plate, seventh limiting plates are arranged at two ends of the pressing plate, one end of each seventh limiting plate, far away from the pressing plate, is connected with a sixth limiting plate in a sliding mode, one side of each seventh limiting plate is provided with a fifth limiting plate at intervals, one end of each fifth limiting plate is provided with a second elastic driving piece used for driving the seventh limiting plate to be far away from the fifth limiting plate, a second driving plate is arranged on the side face of the pressing plate, one side of the second driving plate is provided with a first driving plate used for matching the second driving plate to drive the elastic anti-slip plates to be close to the winding drum so as to achieve the effect of braking on the winding drum.
9. The safety hoisting apparatus for building construction according to claim 8, wherein: the second elastic driving piece is a spring or a metal elastic piece.
10. The safety hoisting apparatus for building construction according to any one of claims 1 to 9, wherein: one end of the storage box, which is close to the supporting bottom plate, is provided with an elastic buffer plate for reducing noise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210012416.XA CN114348901B (en) | 2022-01-07 | 2022-01-07 | Safe lifting equipment for building construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210012416.XA CN114348901B (en) | 2022-01-07 | 2022-01-07 | Safe lifting equipment for building construction |
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| Publication Number | Publication Date |
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| CN114348901A true CN114348901A (en) | 2022-04-15 |
| CN114348901B CN114348901B (en) | 2024-05-14 |
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| CN202210012416.XA Active CN114348901B (en) | 2022-01-07 | 2022-01-07 | Safe lifting equipment for building construction |
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| CN213202130U (en) * | 2020-08-04 | 2021-05-14 | 无锡南方智能物流设备股份有限公司 | Automobile body hoist for assembly production line |
| CN213707576U (en) * | 2020-09-02 | 2021-07-16 | 昆明东昊钛业有限公司 | Double-hook crane anti-slip device for rinsing in titanium dioxide preparation |
| CN112079279A (en) * | 2020-10-08 | 2020-12-15 | 拉弗莱防坠落***科技(苏州)有限公司 | Anti-falling device for elevator |
| CN112661077A (en) * | 2020-12-12 | 2021-04-16 | 安徽师范大学 | High worker civil engineering of security uses engineering material hoisting device |
| CN215101727U (en) * | 2021-07-15 | 2021-12-10 | 重庆圣仁工程建设有限公司 | Lifting device for building engineering |
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| CN114348901B (en) | 2024-05-14 |
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