CN115285834B - Pipeline installation hoisting device for building installation engineering - Google Patents
Pipeline installation hoisting device for building installation engineering Download PDFInfo
- Publication number
- CN115285834B CN115285834B CN202211197685.4A CN202211197685A CN115285834B CN 115285834 B CN115285834 B CN 115285834B CN 202211197685 A CN202211197685 A CN 202211197685A CN 115285834 B CN115285834 B CN 115285834B
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- fixedly connected
- base
- pipeline
- wire rope
- limiting
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- 238000009434 installation Methods 0.000 title claims abstract description 52
- 238000004804 winding Methods 0.000 claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims description 25
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 description 8
- 239000011435 rock Substances 0.000 description 5
- 230000001771 impaired effect Effects 0.000 description 4
- 230000001737 promoting effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a pipeline installation lifting device for building installation engineering, which comprises a base and a fixed seat, wherein multiple groups of mounting plates which are arranged in pairs and in groups are fixedly connected to the side walls of the base and the fixed seat, each group of mounting plates are symmetrically arranged, a supporting shaft is fixedly connected between the two mounting plates of each group, a fixed pulley is rotatably connected to the supporting shaft, and a connecting rope is arranged in the fixed pulley on the fixed seat. According to the invention, the double-shaft output motor drives the winding roller to rotate along the twisting direction of the spiral steel wire rope in the process of lifting the fixed frame, so that the spiral steel wire rope is twisted tightly to avoid looseness, and the shaking of the fixed frame in the lifting process is greatly reduced.
Description
Technical Field
The invention relates to the technical field of pipeline installation, in particular to a pipeline installation lifting device for building installation engineering.
Background
In the building installation project, the high-altitude pipeline installation operation is often completed by means of a pipeline installation lifting device. The pipeline installation hoisting device that current building installation engineering used generally tightens up the rope with the help of installing the electric hoist in the air, the pipeline of installing on the rope upwards promotes, when in-service use, because the installation that at every turn the pipeline promoted all need can go on after putting down the rope that goes on promoting last time, consequently work efficiency is comparatively low, and the pipeline is promoting the in-process, it violently rocks to receive the effect of wind very easily to take place, and then it leads to pipeline or wall impaired to collide with the wall, promotion process stability is poor.
Disclosure of Invention
The invention aims to solve the defects in the prior art, such as: the pipeline installation hoisting device that current building installation engineering used generally tightens up the rope with the help of installing the electric hoist in the air, the pipeline of installing on the rope upwards promotes, when in-service use, because the installation that at every turn the pipeline promoted all need can go on after putting down the rope that goes on promoting last time, consequently work efficiency is comparatively low, and the pipeline is promoting the in-process, it violently rocks to receive the effect of wind very easily to take place, and then it leads to pipeline or wall impaired to collide with the wall, promotion process stability is poor.
In order to achieve the purpose, the invention adopts the following technical scheme:
a pipeline installation lifting device for building installation engineering comprises a base and a fixing seat, wherein multiple groups of mounting plates which are arranged in pairs are fixedly connected to the side walls of the base and the fixing seat, each group of mounting plates are symmetrically arranged, a supporting shaft is fixedly connected between the two mounting plates of each group, a fixed pulley is rotatably connected to the supporting shaft, a connecting rope is arranged in the fixed pulley on the fixing seat, fixing frames are fixedly connected to two ends of the connecting rope, a limiting part is rotatably connected to one end, away from the connecting rope, of each fixing frame, a spiral steel wire rope is fixedly connected to one end, close to the base, of the limiting part, the spiral steel wire rope bypasses the fixed pulley on the base, two fixing rings are symmetrically and fixedly connected to one side wall, away from the fixing seat, of the base, and limiting rings are fixedly connected to the two fixing rings;
rotate on the inside wall of spacing ring and be connected with two limiting plates, two fixedly connected with connecting plate between the limiting plate, fixedly connected with biax output motor in the connecting plate, equal fixedly connected with pivot on two output of biax output motor, two spacing pipe boxes of equal symmetry fixedly connected with on the lateral wall that the limiting plate is close to each other, spacing pipe box internal rotation is connected with the winding up roller, spiral wire rope's one end is winding up and is established on the winding up roller, be equipped with transmission between winding up roller and the pivot, all install the gear through one-way bearing on the both ends of pivot, one of them the spacing ring is close to and is equipped with the insection with gear engaged with on a lateral wall of gear, be equipped with pipeline fixing device on the mount.
Preferably, the transmission device comprises three transmission wheels, the three transmission wheels are respectively and fixedly connected to the rotating shaft and the two winding rollers, the three transmission wheels are in transmission connection through transmission belts, grooves are formed in the three transmission wheels, and the transmission belts are located in the grooves.
Preferably, the pipeline fixing device comprises a hydraulic cylinder, the hydraulic cylinder is fixedly connected to the inner side wall of the fixing frame, the first positioning plate is fixedly connected to the output end of the hydraulic cylinder, and the fixing frame is opposite to the second positioning plate fixedly connected to the inner side wall of the hydraulic cylinder.
Preferably, a plurality of support columns are symmetrically and fixedly connected to the bottom side wall of the base, and the support columns are fixedly connected with the base in a welding mode.
Preferably, two reinforcing blocks are symmetrically and fixedly connected to one side wall, far away from the base, of the fixing seat, and the two reinforcing blocks are fixedly connected in a welding mode.
Preferably, a clamping groove is formed in the fixed pulley, and the connecting rope and the spiral steel wire rope are respectively clamped in the fixed pulley on the base and the fixed seat.
Preferably, the spiral wire rope has a spiral structure formed by twisting a plurality of steel wires in a certain direction.
The invention has the beneficial effects that:
1. through controlling the positive and negative rotation of biax output motor, with the help of two mounts, accomplish the installation promotion operation to the pipeline in turn to the improvement that is showing the work efficiency that pipeline installation promoted, and easy operation, convenient to use.
2. Through the in-process of biax output motor at the promotion mount, it rotates along spiral wire rope system direction of twisting with fingers to drive the winding up roller, thereby make spiral wire rope hank tight, spiral wire rope hank tight in-process, can be through taut with spiral wire rope and connection rope, avoid not hard up, thereby reduce rocking of mount in the promotion in-process by a wide margin, spiral wire rope passes through the rotation between locating part and the mount and is connected, can ensure that hank tightly not excessive, thereby avoid leading to connecting rope or spiral wire rope to break because of the tension that draws.
3. When meeting with stronger wind-force effect, the mount can prevent that the pipeline from directly colliding with the wall impaired when rocking intensely, and because the rotation between locating part and the mount is connected the relation, when the mount rocks is blown by wind-force too hard, can pass through the rotation between locating part and the mount, loosen partly the spiral wire rope who twists tight, in order to avoid breaking under strong wind effect connecting rope or spiral wire rope tension, and can blow the mount and drive its when rocking in wind-force, cushion this process, hinder the skew of mount under the wind-force effect, and accelerate its and reset, and then reduce wind-force influence by a wide margin, reduce the range of rocking.
Drawings
Fig. 1 is a schematic front structural view of a pipe installation lifting device for building installation engineering according to the present invention;
fig. 2 is a partial structural schematic view of a pipe installation lifting device for building installation engineering according to the present invention;
fig. 3 is a schematic structural diagram of a fixing seat of a pipe installation lifting device for building installation engineering according to the present invention;
fig. 4 is a schematic structural view of a fixing frame of a pipe installation lifting device for building installation engineering according to the present invention;
fig. 5 is a schematic structural view of a limiting ring of the pipe installation lifting device for building installation engineering according to the present invention;
fig. 6 is a side view of a stop collar of a pipe installation lifting device for building installation engineering according to the present invention;
fig. 7 is a schematic view of an internal structure of a limiting ring of a pipe installation lifting device for building installation engineering according to the present invention;
fig. 8 is a schematic structural diagram of a limiting plate of the pipe installation lifting device for building installation engineering according to the present invention.
In the figure: the device comprises a base 1, a fixing seat 2, a supporting column 3, a reinforcing block 4, a mounting plate 5, a supporting shaft 6, a fixed pulley 7, a connecting rope 8, a fixing frame 9, a limiting part 10, a spiral steel wire rope 11, a fixing ring 12, a limiting ring 13, a limiting plate 14, a connecting plate 15, a double-shaft output motor 16, a rotating shaft 17, a limiting pipe sleeve 18, a winding roller 19, a driving wheel 20, a driving belt 21, a gear 22, a hydraulic cylinder 23, a first positioning plate 24 and a second positioning plate 25.
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. 1-8, a pipeline installation hoisting device that architectural erection engineering used, including base 1 and fixing base 2, a plurality of support columns 3 of symmetry fixedly connected with on the bottom lateral wall of base 1, a plurality of support columns 3 all through welded mode and base 1 fixed connection, two reinforcing blocks 4 of symmetry fixedly connected with on the lateral wall that base 1 was kept away from to fixing base 2, through welded mode fixed connection between two reinforcing blocks 4, equal fixedly connected with multiunit is two liang of mounting panel 5 that set up on the lateral wall of base 1 and fixing base 2, and every mounting panel 5 of group is the symmetry setting, equal fixedly connected with back shaft 6 between two mounting panels 5 of every group.
Rotation is connected with fixed pulley 7 on the back shaft 6, be equipped with in the fixed pulley 7 on the fixing base 2 and connect rope 8, equal fixedly connected with mount 9 on the both ends of connecting rope 8, mount 9 keeps away from one end internal rotation of connecting rope 8 and is connected with locating part 10, locating part 10 is close to one of base 1 and serves fixedly connected with spiral wire rope 11, spiral wire rope 11 walks around fixed pulley 7 on the base 1, be equipped with the draw-in groove on the fixed pulley 7, connect rope 8 and spiral wire rope 11 in the fixed pulley 7 of joint on base 1 and fixing base 2 respectively, base 1 keeps away from two solid fixed rings 12 of symmetrical fixedly connected with on the lateral wall of fixing base 2.
Equal fixedly connected with spacing ring 13 in two solid fixed rings 12, it is connected with two limiting plates 14 to rotate on the inside wall of spacing ring 13, fixedly connected with connecting plate 15 between two limiting plates 14, fixedly connected with biax output motor 16 in connecting plate 15, equal fixedly connected with pivot 17 on two output of biax output motor 16, two spacing pipe box 18 of equal symmetry fixedly connected with on the lateral wall that limiting plate 14 is close to each other, spacing pipe box 18 internal rotation is connected with winding up roller 19, spiral wire rope 11's one end is rich and is established on winding up roller 19, be equipped with transmission between winding up roller 19 and the pivot 17.
The transmission device comprises three transmission wheels 20, the three transmission wheels 20 are respectively and fixedly connected to the rotating shaft 17 and the two winding rollers 19, the three transmission wheels 20 are in transmission connection through a transmission belt 21, grooves are formed in the three transmission wheels 20, the transmission belt 21 is located in the grooves, gears 22 are mounted at two ends of the rotating shaft 17 through one-way bearings, and one side wall of one limiting ring 13, close to the gear 22, is provided with tooth patterns meshed with the gears 22.
When the pipeline positioning device is used, one end of a pipeline to be installed and lifted is placed on the second positioning plate 25 at the bottom end of the fixing frame 9, then the hydraulic cylinder 23 is started, the output end of the hydraulic cylinder 23 is controlled to extend, the first positioning plate 24 is driven to move towards the second positioning plate 25, the pipeline is positioned and fixed between the first positioning plate 24 and the second positioning plate 25 by matching with the first positioning plate 24, and the first positioning plate 24 and the second positioning plate 25 are both arranged in a conical shape, so that under the pressure action provided by the hydraulic cylinder 23, the first positioning plate 24 can be matched with the second positioning plate 25 to play a good role in limiting and fixing the pipeline, and therefore, the pipeline positioning device can be suitable for installation of pipelines with different pipe diameters;
after a pipeline is installed, a double-shaft output motor 16 is started, the output end of the double-shaft output motor 16 drives two winding rollers 19 to synchronously rotate along with a rotating shaft 17 through the rotating shaft 17, a driving wheel 20 and a driving belt 21, one winding roller 19 is in charge of unwinding the rope, the other winding roller 19 is in charge of winding the rope, so that a fixed pulley 7 and a connecting rope 8 are matched, the fixed frame 9 provided with the pipeline is lifted upwards, when the fixed frame 9 provided with the pipeline is lifted, the other fixed frame 9 not provided with the pipeline is driven by the winding rollers 19 and a spiral steel wire rope 11 to move downwards until the fixed frame 9 provided with the pipeline is lifted to a preset position, the fixed frame 9 not provided with the pipeline is put down on a base 1, then the double-shaft output motor 16 is closed, and workers above start to take down the lifted pipeline;
at this time, the following worker can install a new pipeline on the released fixing frame 9, then the double-shaft output motor 16 is started and reversely rotated, the double-shaft output motor 16 is matched with the winding roller 19, the fixed pulley 7, the spiral steel wire rope 11 and the connecting rope 8, the fixing frame 9 with the pipeline removed from the upper part is lowered, the fixing frame 9 with the pipeline installed on the lower part is lifted up, and the pipeline installation and lifting operation is alternately completed by controlling the forward and reverse rotation of the double-shaft output motor 16 and the two fixing frames 9, so that the working efficiency of pipeline installation and lifting is obviously improved, the operation is simple, and the use is convenient;
when the double-shaft output motor 16 is started, because the two rotating shafts 17 are respectively provided with the gear 22 which is meshed and connected with one side wall of one limiting ring 13 through the one-way bearing, when the double-shaft output motor 16 drives the rotating shafts 17 to rotate, the gears 22 can be driven to rotate through the rotating shafts 17, so that the limiting plate 14 is driven to drive the two winding rollers 19 to rotate in the limiting ring 13, the one-way limiting directions of the two one-way bearings are opposite, the two rotating shafts 17 can only drive the gear 22 to rotate at the same time, so that the direction in which the two winding rollers 19 rotate in the limiting ring 13 around the center of the fixing ring 12 is unchanged no matter whether the double-shaft output motor 16 rotates forwards or backwards, the driving gear 22 drives the limiting plate 14 to drive the winding rollers 19 to rotate in the limiting ring 13, the rotating directions of the two winding rollers 19 in the limiting ring 13 are consistent with the twisting direction of the spiral steel wire rope 11;
in the process of lifting the fixed frame 9, the double-shaft output motor 16 drives the winding roller 19 to rotate along the twisting direction of the spiral steel wire rope 11, so that the spiral steel wire rope 11 is twisted tightly, in the twisting process of the spiral steel wire rope 11, the spiral steel wire rope 11 and the connecting rope 8 can be tensioned to avoid looseness, so that the shaking of the fixed frame 9 in the lifting process is greatly reduced, the spiral steel wire rope 11 is rotatably connected with the fixed frame 9 through the limiting part 10, the twisting can be prevented from being excessive, and the connecting rope 8 or the spiral steel wire rope 11 is prevented from being broken due to the over-tightening;
when meeting with stronger wind-force effect, mount 9 can prevent that the pipeline from directly colliding with the wall impaired when rocking intensely, and because the rotation between locating part 10 and the mount 9 is connected the relation, when the mount 9 rocks is blown by wind-force too intensely, can pass through the rotation between locating part 10 and the mount 9, loosen some with spiral wire rope 11 that tightens, in order to avoid breaking under the strong wind effect connecting rope 8 or spiral wire rope 11 that tightens, and can blow the mount 9 and drive it when rocking in wind-force, cushion this process, hinder the skew of mount 9 under the wind-force effect, and accelerate its and reset, and then reduce wind-force influence by a wide margin, reduce and rock the range.
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 (5)
1. A pipeline installation lifting device for building installation engineering comprises a base (1) and a fixing seat (2), and is characterized in that a plurality of groups of mounting plates (5) which are arranged in a mode of two groups are fixedly connected to the side walls of the base (1) and the fixing seat (2) respectively, each group of mounting plates (5) is symmetrically arranged, a supporting shaft (6) is fixedly connected between the two mounting plates (5) of each group, a fixed pulley (7) is rotatably connected to the supporting shaft (6), a connecting rope (8) is arranged in the fixed pulley (7) on the fixing seat (2), fixing frames (9) are fixedly connected to the two ends of the connecting rope (8), a limiting part (10) is rotatably connected to one end, far away from the connecting rope (8), of each fixing frame (9), a spiral steel wire rope (11) is fixedly connected to one end, close to the base (1), of each spiral steel wire rope (11) bypasses the fixed pulley (7) on the base (1), two fixing rings (12) are symmetrically and fixedly connected to one side wall, far away from the fixing seat (2), of the base (1), and limiting rings (13) are fixedly connected to the two fixing rings (12);
the inner side wall of the limiting ring (13) is rotatably connected with two limiting plates (14), a connecting plate (15) is fixedly connected between the two limiting plates (14), a double-shaft output motor (16) is fixedly connected in the connecting plate (15), two output ends of the double-shaft output motor (16) are fixedly connected with a rotating shaft (17), two limiting pipe sleeves (18) are symmetrically and fixedly connected on a side wall of the limiting plate (14) close to each other, a winding roller (19) is rotationally connected in the limiting pipe sleeves (18), one end of a spiral steel wire rope (11) is wound on the winding roller (19), a transmission device is arranged between the winding roller (19) and the rotating shaft (17) and comprises three transmission wheels (20) which are fixedly connected on the rotating shaft (17) and the two winding rollers (19) respectively, three transmission wheels (20) are in transmission connection through a transmission belt (21), grooves are arranged on the three transmission wheels (20), the transmission belt (21) is positioned in the grooves, gears (22) are arranged on two ends of the rotating shaft (17) through one-way bearings, one side wall of the limiting ring (13) is close to a fixed gear mesh device, and a fixed rack (9) is arranged on the pipeline, pipeline fixing device includes pneumatic cylinder (23), pneumatic cylinder (23) fixed connection is on the inside wall of mount (9), first locating plate of fixedly connected with (24) on the output of pneumatic cylinder (23), mount (9) just are fixedly connected with second locating plate (25) on the inside wall of pneumatic cylinder (23).
2. The pipe installation lifting device for the building installation engineering according to claim 1, wherein a plurality of supporting columns (3) are symmetrically and fixedly connected to the bottom side wall of the base (1), and the supporting columns (3) are fixedly connected with the base (1) in a welding manner.
3. The pipeline installation lifting device for the building installation engineering according to claim 1, wherein two reinforcing blocks (4) are symmetrically and fixedly connected to one side wall of the fixed seat (2) far away from the base (1), and the two reinforcing blocks (4) are fixedly connected in a welding manner.
4. The pipeline installation lifting device for the building installation engineering as claimed in claim 1, wherein a clamping groove is formed in the fixed pulley (7), and the connecting rope (8) and the spiral steel wire rope (11) are respectively clamped in the fixed pulley (7) on the base (1) and the fixed seat (2).
5. The pipe installation lifting device for building installation engineering according to claim 1, characterized in that the spiral steel wire rope (11) is a spiral structure formed by twisting a plurality of steel wires in a certain direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211197685.4A CN115285834B (en) | 2022-09-29 | 2022-09-29 | Pipeline installation hoisting device for building installation engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211197685.4A CN115285834B (en) | 2022-09-29 | 2022-09-29 | Pipeline installation hoisting device for building installation engineering |
Publications (2)
| Publication Number | Publication Date |
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| CN115285834A CN115285834A (en) | 2022-11-04 |
| CN115285834B true CN115285834B (en) | 2022-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211197685.4A Active CN115285834B (en) | 2022-09-29 | 2022-09-29 | Pipeline installation hoisting device for building installation engineering |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117721989A (en) * | 2023-10-20 | 2024-03-19 | 中建六局华南建设有限公司 | An anti-sway hanging basket |
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| JP2013100165A (en) * | 2011-11-08 | 2013-05-23 | Fujitec Co Ltd | Drive unit of escalator |
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| CN215905709U (en) * | 2021-09-07 | 2022-02-25 | 李方华 | External wall panel hoisting device for assembly type building construction |
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| EP2487363A1 (en) * | 2011-01-31 | 2012-08-15 | Siemens Aktiengesellschaft | Lifting system and method for lifting rotor blades of wind turbines |
| US10745251B2 (en) * | 2017-01-27 | 2020-08-18 | The Boeing Company | Belt drive dual robot gantry |
| CN208631992U (en) * | 2018-06-15 | 2019-03-22 | 李长义 | A kind of Pipe installing lifting device of building installation engineering |
| CN211769831U (en) * | 2020-02-14 | 2020-10-27 | 苏州华盖文化传媒有限公司 | Crane device for stage |
| CN212450359U (en) * | 2020-03-27 | 2021-02-02 | 肖彦平 | Special material lifting means of construction |
| CN212953945U (en) * | 2020-05-12 | 2021-04-13 | 响水德宇科技有限公司 | Crane capable of preventing shaking |
| CN111716044A (en) * | 2020-06-11 | 2020-09-29 | 王文斌 | Pulley auxiliary fixing device for efficient welding of pressure pipeline |
| CN214243519U (en) * | 2021-02-02 | 2021-09-21 | 张娟 | Steel construction manufacturing is with going to hang |
| CN113562625A (en) * | 2021-06-16 | 2021-10-29 | 华能伊春热电有限公司 | Hoisting equipment for construction site |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013100165A (en) * | 2011-11-08 | 2013-05-23 | Fujitec Co Ltd | Drive unit of escalator |
| CN213738289U (en) * | 2020-11-27 | 2021-07-20 | 湖州南浔临港物流有限公司 | Portal crane for port cargo transfer |
| CN214118106U (en) * | 2020-12-30 | 2021-09-03 | 河南神安重工机械有限公司 | Hoisting device for coal seam drill rod |
| CN215905709U (en) * | 2021-09-07 | 2022-02-25 | 李方华 | External wall panel hoisting device for assembly type building construction |
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| CN115285834A (en) | 2022-11-04 |
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