CN112537731A - Lifting device for mounting power equipment for power engineering - Google Patents
Lifting device for mounting power equipment for power engineering Download PDFInfo
- Publication number
- CN112537731A CN112537731A CN202011218729.8A CN202011218729A CN112537731A CN 112537731 A CN112537731 A CN 112537731A CN 202011218729 A CN202011218729 A CN 202011218729A CN 112537731 A CN112537731 A CN 112537731A
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- Prior art keywords
- fixedly connected
- wall
- lifting
- power equipment
- power
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/02—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The invention belongs to the technical field of power engineering, in particular to a lifting device for mounting power equipment for power engineering, which aims at the problems that when the conventional power equipment for power engineering is mounted and lifted, a lifting rope is driven by a winch to lift the equipment to a specified height, the lifting rope is easily influenced by an external object in the lifting process, the stability of the lifting rope is influenced by external wind power and sundries in the power mounting process, so that potential safety hazards exist in the lifting process of the power equipment, and the following scheme is provided. According to the lifting rope, the long-strip protection pipes are arranged, the opposite sides of the two long-strip protection pipes are open ends, when the lifting plate below the lifting rope is driven by the winch to lift, the lifting rope moves on the inner walls of the long-strip protection pipes, so that the stability of the lifting rope is not affected by external factors, the lifting rope can be stably lifted, the safety of power equipment in the lifting process is improved, and potential safety hazards are eliminated.
Description
Technical Field
The invention relates to the technical field of power engineering, in particular to a lifting device for mounting power equipment for power engineering.
Background
Electric power engineering, i.e. engineering related to the production, transmission and distribution of electric energy, and also engineering using electricity as power and energy in a wide variety of fields; meanwhile, the power transmission and transformation industry expansion project can be understood, and in the power project, when power equipment is installed, the power equipment needs to be lifted through a lifting device due to the fact that the power equipment is installed at high altitude.
When the existing power equipment for power engineering is installed and lifted, the hoisting rope is driven by the winch to lift the equipment to a specified height, but the hoisting rope is easily influenced by external objects in the lifting process, and external wind power and sundries in the power installation process can influence the stability of the hoisting rope, so that potential safety hazards exist in the power equipment lifting process.
Disclosure of Invention
Based on the existing lifting device for the power equipment in the power engineering, the lifting rope is driven by the winch to lift the equipment to the specified height, but the lifting rope is easily influenced by external objects in the lifting process, and the stability of the lifting rope is influenced by external wind power and sundries in the power installation process, so that potential safety hazards exist in the lifting process of the power equipment.
The lifting device for mounting the power equipment for the power engineering comprises a fixed seat, wherein a supporting plate is fixedly connected to the outer wall of the top of the fixed seat, two fixing rods are fixedly connected to two ends of the outer wall of one side of the supporting plate, the outer walls of the two fixing rods positioned on one side of the supporting plate are fixedly connected with the same adjusting groove, three adjusting blocks are slidably connected to the inner walls of the two adjusting grooves, the outer walls of the three adjusting blocks are fixedly connected with the same strip-shaped protection pipe, two winches are fixedly connected to the outer wall of the top of the fixed seat, lifting ropes are arranged at the winding ends of the two winches, and the two lifting ropes penetrate through the strip.
Preferably, two spouts of one side outer wall fixedly connected with of backup pad, and the equal sliding connection of inner wall of two spouts has the slider, the same lifting plate of outer wall fixedly connected with of two sliders.
Preferably, the four corners of the outer wall of the top of the lifting plate are fixedly connected with lifting rings, and the lifting ropes are fixedly connected to the inner walls of the lifting rings.
Preferably, the top outer wall fixedly connected with of lifting plate is protection frame down, and the top outer wall equidistance fixedly connected with telescopic link of protection frame down, the same last protection frame of top outer wall fixedly connected with of a plurality of telescopic links.
Preferably, the outer wall of the top of the supporting plate is fixedly connected with four top plates, and the outer wall of one side, opposite to each two adjacent top plates, is connected with the same connecting shaft through a bearing.
Preferably, the outer walls of the two connecting shafts are fixedly connected with guide wheels, and the lifting ropes are wound inside guide grooves of the guide wheels.
Preferably, the backup pad is located the equal fixedly connected with fixed plate of one side outer wall of adjustment tank below, and the top outer wall fixedly connected with cylinder of fixed plate, the top fixed connection of cylinder in the bottom outer wall of regulating block.
Preferably, the equal fixedly connected with mount in top outer wall four corners of fixing base, and the equal fixedly connected with cylinder No. two of the outer wall of every mount, the same regulating plate of bottom outer wall fixedly connected with of two cylinders that are located one side, the bottom outer wall equidistance fixedly connected with pile body of regulating plate.
The beneficial effects of the invention are as follows:
1. through being provided with rectangular protection tube, the relative one side of two rectangular protection tubes is the beginning, and when lifting plate through hoist engine drive lifting rope below promoted, the lifting rope removed at the inner wall of rectangular protection tube, ensured that external factors can not lead to the fact the influence to the stability of lifting rope for the lifting rope can stably promote, improves the security of power equipment promotion in-process, gets rid of the potential safety hazard.
2. Through being provided with spout and slider, the in-process that promotes the board, the slider on the promotion board slides at the inner wall of spout to carry on spacingly to the promotion board, further improve the security that power equipment promoted the in-process.
3. Through being provided with adjustment tank, regulating block and a cylinder, when carrying out the protection of lifting rope through rectangular protection tube, carry out the removal of rectangular protection tube according to the promotion scope of lifting rope, drive the regulating block of bottommost through adjusting a cylinder and slide at the inner wall of adjustment tank to carry out the removal of rectangular protection tube, improve the device's application scope.
4. Through being provided with protecting frame, lower protecting frame and telescopic link, when carrying out power equipment's lift, place it in last protecting frame and lower protecting frame, carry out spacingly through last protecting frame and lower protecting frame to it, simultaneously, can carry out the interval between protecting frame and the lower protecting frame and adjust according to power equipment's size, can accomplish through adjusting the telescopic link to further improve the spacing effect of power equipment lift in-process.
5. Through being provided with mount, No. two cylinders, regulating plate and pile body, when carrying out this hoisting device's installation, can directly drive the pile body of regulating plate below and impress subaerially through adjusting No. two cylinders, improve the convenience of its installation to improve its use value.
Drawings
Fig. 1 is a schematic overall structural diagram of a lifting device for mounting power equipment in power engineering according to the present invention;
fig. 2 is a top view of the overall structure of a lifting device for mounting power equipment in power engineering according to the present invention;
fig. 3 is a schematic structural diagram of a lifting plate of a lifting device for mounting power equipment in power engineering, according to the present invention;
fig. 4 is a schematic structural diagram of an overall structure of a lifting device for mounting an electric power equipment for power engineering according to embodiment 2 of the present invention.
In the figure: the device comprises a fixed seat 1, a winch 2, a fixed plate 3, a cylinder 4, a lower protective frame 5, a lifting plate 6, a telescopic rod 7, a lifting ring 8, an upper protective frame 9, a long protective tube 10, an adjusting groove 11, a top plate 12, a connecting shaft 13, a sliding groove 14, a guide wheel 15, a supporting plate 16, a fixing rod 17, a lifting rope 18, a sliding block 19, an adjusting block 20, a fixed frame 21, a cylinder 22 II, a pile 23 and an adjusting plate 24.
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.
Example 1
Referring to fig. 1-3, a lifting device for mounting power equipment for power engineering comprises a fixed base 1, a supporting plate 16 is fixedly connected to the outer wall of the top of the fixed base 1, two fixing rods 17 are fixedly connected to both ends of the outer wall of one side of the supporting plate 16, the outer walls of the two fixing rods 17 at one side are fixedly connected with the same adjusting groove 11, the inner walls of the two adjusting grooves 11 are slidably connected with three adjusting blocks 20, the outer walls of the three adjusting blocks 20 are fixedly connected with the same strip-shaped protective tube 10, two winches 2 are fixedly connected to the outer wall of the top of the fixed base 1, lifting ropes 18 are arranged at the winding ends of the two winches 2, the two lifting ropes 18 pass through the strip-shaped protective tube 10, when the lifting plate 6 below the lifting ropes 18 is driven by the winches 2, the lifting ropes 18 move on the inner wall of the strip-shaped protective tube, the lifting rope 18 can be stably lifted, the safety of the power equipment in the lifting process is improved, and potential safety hazards are eliminated.
In the invention, two sliding grooves 14 are fixedly connected to the outer wall of one side of the supporting plate 16, the inner walls of the two sliding grooves 14 are both connected with sliding blocks 19 in a sliding manner, and the outer walls of the two sliding blocks 19 are fixedly connected with the same lifting plate 6.
In the invention, four corners of the outer wall of the top of the lifting plate 6 are fixedly connected with lifting rings 8, and lifting ropes 18 are fixedly connected to the inner walls of the lifting rings 8.
In the invention, the outer wall of the top of the lifting plate 6 is fixedly connected with a lower protective frame 5, the outer wall of the top of the lower protective frame 5 is fixedly connected with telescopic rods 7 at equal intervals, and the outer walls of the tops of the telescopic rods 7 are fixedly connected with the same upper protective frame 9.
In the invention, the outer wall of the top of the supporting plate 16 is fixedly connected with four top plates 12, and the outer wall of the opposite side of each two adjacent top plates 12 is connected with the same connecting shaft 13 through a bearing.
In the invention, the outer walls of the two connecting shafts 13 are fixedly connected with guide wheels 15, and the lifting ropes 18 are wound inside the guide grooves of the guide wheels 15.
In the invention, the outer walls of the supporting plates 16 at one side below the adjusting groove 11 are fixedly connected with the fixing plate 3, the outer wall of the top of the fixing plate 3 is fixedly connected with the first air cylinder 4, and the top end of the first air cylinder 4 is fixedly connected with the outer wall of the bottom of the adjusting block 20.
During the use, when carrying out power equipment's lift, place it on lifting plate 6, then it is fixed with rings 8 on lifting rope 18 and the lifting plate 6 are connected, the position control of protecting frame 9 is gone up according to power equipment's height, the pulling telescopic link 7 carries out the altitude mixture control of protecting frame 9, make it block power equipment, then start hoist engine 2, hoist engine 2 drives lifting rope 18 and rises, make lifting rope 18 slide on leading wheel 15, then drive lifting plate 6 and promote, the in-process that lifting plate 6 promoted, slider 19 slides at the inner wall of spout 14, improve the stability of its accommodation process.
Example 2
Referring to fig. 4, a lifting device for mounting power equipment for power engineering comprises a fixed base 1, a supporting plate 16 is fixedly connected to the outer wall of the top of the fixed base 1, two fixing rods 17 are fixedly connected to both ends of the outer wall of one side of the supporting plate 16, the outer walls of the two fixing rods 17 positioned on one side are fixedly connected with the same adjusting groove 11, the inner walls of the two adjusting grooves 11 are respectively and slidably connected with three adjusting blocks 20, the outer walls of the three adjusting blocks 20 are fixedly connected with the same strip-shaped protective tube 10, two winches 2 are fixedly connected to the outer wall of the top of the fixed base 1, lifting ropes 18 are respectively arranged at the winding ends of the two winches 2, the two lifting ropes 18 respectively penetrate through the strip-shaped protective tube 10, when the lifting plate 6 below the lifting ropes 18 is driven by the winches 2, the lifting ropes 18 move on the inner wall of the, the lifting rope 18 can be stably lifted, the safety of the power equipment in the lifting process is improved, and potential safety hazards are eliminated.
In the invention, two sliding grooves 14 are fixedly connected to the outer wall of one side of the supporting plate 16, the inner walls of the two sliding grooves 14 are both connected with sliding blocks 19 in a sliding manner, and the outer walls of the two sliding blocks 19 are fixedly connected with the same lifting plate 6.
In the invention, four corners of the outer wall of the top of the lifting plate 6 are fixedly connected with lifting rings 8, and lifting ropes 18 are fixedly connected to the inner walls of the lifting rings 8.
In the invention, the outer wall of the top of the lifting plate 6 is fixedly connected with a lower protective frame 5, the outer wall of the top of the lower protective frame 5 is fixedly connected with telescopic rods 7 at equal intervals, and the outer walls of the tops of the telescopic rods 7 are fixedly connected with the same upper protective frame 9.
In the invention, the outer wall of the top of the supporting plate 16 is fixedly connected with four top plates 12, and the outer wall of the opposite side of each two adjacent top plates 12 is connected with the same connecting shaft 13 through a bearing.
In the invention, the outer walls of the two connecting shafts 13 are fixedly connected with guide wheels 15, and the lifting ropes 18 are wound inside the guide grooves of the guide wheels 15.
In the invention, the outer walls of the supporting plates 16 at one side below the adjusting groove 11 are fixedly connected with the fixing plate 3, the outer wall of the top of the fixing plate 3 is fixedly connected with the first air cylinder 4, and the top end of the first air cylinder 4 is fixedly connected with the outer wall of the bottom of the adjusting block 20.
Compare in embodiment 1, the equal fixedly connected with mount 21 in fixing base 1's top outer wall four corners, and the equal fixedly connected with cylinder 22 No. two of every mount 21's outer wall, the same regulating plate 24 of the bottom outer wall fixedly connected with of two cylinders 22 that are located one side, the equidistant fixedly connected with pile body 23 of regulating plate 24's bottom outer wall, when carrying out this hoisting device's installation, can directly drive the pile body 23 of regulating plate 24 below through adjusting cylinder 22 and impress subaerially, improve the convenience of its installation, thereby improve its use value.
When the lifting device is used, compared with the embodiment 1, when the lifting device is installed, the lifting device is moved to a specified point, the second adjusting cylinder 22 drives the pile body 23 below the adjusting plate 24 to be pressed into the ground, and therefore the lifting device is fixed through the pile body 23, and the lifting device is convenient and efficient.
The beneficial effects of the invention are as follows:
1. through being provided with rectangular protection tube, the relative one side of two rectangular protection tubes is the beginning, and when lifting plate through hoist engine drive lifting rope below promoted, the lifting rope removed at the inner wall of rectangular protection tube, ensured that external factors can not lead to the fact the influence to the stability of lifting rope for the lifting rope can stably promote, improves the security of power equipment promotion in-process, gets rid of the potential safety hazard.
2. Through being provided with spout and slider, the in-process that promotes the board, the slider on the promotion board slides at the inner wall of spout to carry on spacingly to the promotion board, further improve the security that power equipment promoted the in-process.
3. Through being provided with adjustment tank, regulating block and a cylinder, when carrying out the protection of lifting rope through rectangular protection tube, carry out the removal of rectangular protection tube according to the promotion scope of lifting rope, drive the regulating block of bottommost through adjusting a cylinder and slide at the inner wall of adjustment tank to carry out the removal of rectangular protection tube, improve the device's application scope.
4. Through being provided with protecting frame, lower protecting frame and telescopic link, when carrying out power equipment's lift, place it in last protecting frame and lower protecting frame, carry out spacingly through last protecting frame and lower protecting frame to it, simultaneously, can carry out the interval between protecting frame and the lower protecting frame and adjust according to power equipment's size, can accomplish through adjusting the telescopic link to further improve the spacing effect of power equipment lift in-process.
5. Through being provided with mount, No. two cylinders, regulating plate and pile body, when carrying out this hoisting device's installation, can directly drive the pile body of regulating plate below and impress subaerially through adjusting No. two cylinders, improve the convenience of its installation to improve its use value.
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 (10)
1. The utility model provides a hoisting device is used in power equipment installation for power engineering, includes fixing base (1), its characterized in that, top outer wall fixedly connected with backup pad (16) of fixing base (1), and two dead levers (17) of the equal fixedly connected with in one side outer wall both ends of backup pad (16), the same adjustment tank (11) of outer wall fixedly connected with of two dead levers (17) that are located one side, two the equal sliding connection of inner wall of adjustment tank (11) has three regulating block (20), and the same rectangular protection tube (10) of the outer wall fixedly connected with of three regulating block (20), two hoist engines (2) of top outer wall fixedly connected with of fixing base (1), and the rolling end of two hoist engines (2) all is equipped with lifting rope (18), and rectangular protection tube (10) are all passed in two lifting rope (18).
2. The lifting device for mounting the power equipment for power engineering according to claim 1, wherein two sliding grooves (14) are fixedly connected to the outer wall of one side of the supporting plate (16), sliding blocks (19) are slidably connected to the inner walls of the two sliding grooves (14), and the same lifting plate (6) is fixedly connected to the outer walls of the two sliding blocks (19).
3. The lifting device for mounting the power equipment for power engineering according to claim 2, wherein lifting rings (8) are fixedly connected to four corners of the outer wall of the top of the lifting plate (6), and the lifting ropes (18) are fixedly connected to the inner walls of the lifting rings (8).
4. The lifting device for mounting the power equipment for power engineering according to claim 3, wherein the lifting rope (18) is fixedly connected to the inner wall of the lifting ring (8).
5. The lifting device for mounting the power equipment for the power engineering according to claim 4, wherein the outer wall of the top of the lifting plate (6) is fixedly connected with the lower protection frame (5), the outer wall of the top of the lower protection frame (5) is fixedly connected with the telescopic rods (7) at equal intervals, and the outer walls of the tops of the telescopic rods (7) are fixedly connected with the same upper protection frame (9).
6. The lifting device for mounting power equipment for power engineering according to claim 1, wherein four top plates (12) are fixedly connected to the outer wall of the top of the supporting plate (16), and the same connecting shaft (13) is connected to the outer wall of each two adjacent top plates (12) at the opposite side through a bearing.
7. The lifting device for mounting the power equipment for power engineering according to claim 6, wherein a guide wheel (15) is fixedly connected to the outer wall of each of the two connecting shafts (13), and the lifting rope (18) is wound inside the guide groove of the guide wheel (15).
8. The lifting device for mounting the power equipment for power engineering according to claim 1, wherein the outer wall of one side of the supporting plate (16) below the adjusting groove (11) is fixedly connected with the fixing plate (3), the outer wall of the top of the fixing plate (3) is fixedly connected with the first cylinder (4), and the top end of the first cylinder (4) is fixedly connected with the outer wall of the bottom of the adjusting block (20).
9. The lifting device for mounting the electric power equipment for the power engineering according to any one of claims 1-8, wherein four corners of the outer wall of the top of the fixed base (1) are fixedly connected with fixed frames (21), and the outer wall of each fixed frame (21) is fixedly connected with a second cylinder (22).
10. The lifting device for mounting the power equipment for power engineering according to claim 9, wherein the same adjusting plate (24) is fixedly connected to the outer wall of the bottom of the two cylinders (22) on one side, and the piles (23) are fixedly connected to the outer wall of the bottom of the adjusting plate (24) at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011218729.8A CN112537731A (en) | 2020-11-04 | 2020-11-04 | Lifting device for mounting power equipment for power engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011218729.8A CN112537731A (en) | 2020-11-04 | 2020-11-04 | Lifting device for mounting power equipment for power engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112537731A true CN112537731A (en) | 2021-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011218729.8A Pending CN112537731A (en) | 2020-11-04 | 2020-11-04 | Lifting device for mounting power equipment for power engineering |
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| Country | Link |
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| CN (1) | CN112537731A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718054A (en) * | 2022-04-19 | 2022-07-08 | 山东省建筑工程质量检验检测中心有限公司 | Emergency protection device for manual hole digging pile |
| CN115849238A (en) * | 2023-01-31 | 2023-03-28 | 中建八局第四建设有限公司 | Equipment for vertically transporting and hoisting air pipe |
| KR102719339B1 (en) | 2024-04-05 | 2024-10-21 | 이정율 | Aerial work platform with height adjustment |
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| CN206894767U (en) * | 2017-06-28 | 2018-01-16 | 嘉兴芯脉电子有限公司 | Lift monitoring camera |
| CN108358107A (en) * | 2018-02-05 | 2018-08-03 | 安徽理工大学 | A kind of big data all-in-one machine haulage equipment and its control circuit |
| CN208716784U (en) * | 2018-09-04 | 2019-04-09 | 河南凯迪电力工程有限公司 | A kind of boiler furnace apparatus for examination and repair |
| CN208747541U (en) * | 2018-07-26 | 2019-04-16 | 河北百顺汽车科技服务有限公司 | A kind of auto repair lifting device |
| CN210127053U (en) * | 2019-04-29 | 2020-03-06 | 中铁十八局集团北京工程有限公司 | Concrete lifting device for building construction |
| CN210558941U (en) * | 2019-09-04 | 2020-05-19 | 张龙华 | Lifting device for bridge engineering |
| CN211619872U (en) * | 2019-11-27 | 2020-10-02 | 河南泰宜通信工程有限公司 | Communication construction tool of ascending a height |
| CN211813204U (en) * | 2020-01-30 | 2020-10-30 | 王同刚 | Stable in structure's material lifting machine |
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2020
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN206894767U (en) * | 2017-06-28 | 2018-01-16 | 嘉兴芯脉电子有限公司 | Lift monitoring camera |
| CN108358107A (en) * | 2018-02-05 | 2018-08-03 | 安徽理工大学 | A kind of big data all-in-one machine haulage equipment and its control circuit |
| CN208747541U (en) * | 2018-07-26 | 2019-04-16 | 河北百顺汽车科技服务有限公司 | A kind of auto repair lifting device |
| CN208716784U (en) * | 2018-09-04 | 2019-04-09 | 河南凯迪电力工程有限公司 | A kind of boiler furnace apparatus for examination and repair |
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| CN211619872U (en) * | 2019-11-27 | 2020-10-02 | 河南泰宜通信工程有限公司 | Communication construction tool of ascending a height |
| CN211813204U (en) * | 2020-01-30 | 2020-10-30 | 王同刚 | Stable in structure's material lifting machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718054A (en) * | 2022-04-19 | 2022-07-08 | 山东省建筑工程质量检验检测中心有限公司 | Emergency protection device for manual hole digging pile |
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| CN115849238A (en) * | 2023-01-31 | 2023-03-28 | 中建八局第四建设有限公司 | Equipment for vertically transporting and hoisting air pipe |
| KR102719339B1 (en) | 2024-04-05 | 2024-10-21 | 이정율 | Aerial work platform with height adjustment |
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Application publication date: 20210323 |