CN111017833B - Lifting platform for overhauling distribution transformer on column - Google Patents
Lifting platform for overhauling distribution transformer on column Download PDFInfo
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- CN111017833B CN111017833B CN201911293724.9A CN201911293724A CN111017833B CN 111017833 B CN111017833 B CN 111017833B CN 201911293724 A CN201911293724 A CN 201911293724A CN 111017833 B CN111017833 B CN 111017833B
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- 230000000630 rising effect Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 description 7
- 230000001174 ascending effect Effects 0.000 description 2
- 241001503987 Clematis vitalba Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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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
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
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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
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
- B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a lifting platform for overhauling a distribution transformer on a column, which comprises a bottom plate, an operation platform, a top frame, a supporting column and a jack, wherein the operation platform is arranged on the bottom plate; a plurality of supporting devices are fixed on the bottom plate and used for supporting the weight of the lifting platform for overhauling the distribution transformer on the whole column when the lifting platform for overhauling the distribution transformer on the column is in a working state; four support columns are vertically and upwards arranged on the bottom plate; the four support columns penetrate through the operation platform to be connected with the top frame; the bottom of the jack is arranged in the center of the base, and the upper part of the jack is fixedly connected with the center of the bottom of the operation platform and used for jacking the operation platform; the work platform is also provided with an anti-falling structure. The invention provides a lifting platform for overhauling a distribution transformer on a column, which can ensure that a hydraulic cylinder of the platform can be kept at a corresponding height and cannot fall down when the platform is in a working position and a hydraulic cylinder fails, and effectively ensure the personal safety of an overhauler.
Description
Technical Field
The invention belongs to the technical field of electric power overhaul, and particularly relates to a lifting platform for overhauling a distribution transformer on a column.
Background
Pole-mounted transformers are typically mounted on a support between two poles; in the maintenance process, due to the particularity of the transformer position on the column, when the maintenance personnel climbs to the transformer position on the column through the climbers, the maintenance personnel can maintain the transformer position on the column only by outwards exploring the personnel, and the operation is unchanged. If the distance between two electric poles is great, some equipment maintainers between the two electric poles can not overhaul the electric poles through pedaling the poles.
In order to solve the problem of inconvenient maintenance, a conventional hydraulic lifting platform can be adopted, and an operator can be conveyed to the position of the transformer on the column to carry out corresponding maintenance; the general height of the lower edge of the conventional pole-mounted transformer is more than 2 meters to 2 meters 5, and if the hydraulic cylinder of the conventional hydraulic lifting platform suddenly fails in a working state, the platform fails to fall freely in the moment, so that hidden dangers are brought to the overhaul safety.
Disclosure of Invention
The invention aims to provide a lifting platform for overhauling a distribution transformer on a column, which can ensure that a hydraulic cylinder of the platform can be kept at a corresponding height and cannot fall down when the platform is in a working position and a hydraulic cylinder fails, and effectively ensure the personal safety of an overhauling person.
In order to achieve the purpose, the invention adopts the following technical scheme:
a lifting platform for overhauling a distribution transformer on a column comprises a bottom plate, an operation platform, a top frame, a support column and a jack;
a plurality of supporting devices are fixed on the bottom plate and used for supporting the weight of the lifting platform for overhauling the distribution transformer on the whole column when the lifting platform for overhauling the distribution transformer on the column is in a working state;
four support columns are vertically and upwards arranged on the bottom plate; the four support columns penetrate through the operation platform to be connected with the top frame;
the bottom of the jack is arranged in the center of the base, and the upper part of the jack is fixedly connected with the center of the bottom of the operation platform and used for jacking the operation platform;
the top frame is a rectangular frame formed by connecting four connecting plates; the top surface of the operation platform is provided with a pit, and when the operation platform is lifted to the topmost working position, the top frame is embedded into the pit; the top surface of the top frame is flush with the top surface of the operation platform;
the work platform is also provided with an anti-falling structure; the anti-falling structure comprises a first fixed block, a second fixed block and a hand-operated threaded rod; the first fixing blocks are fixedly arranged on the top surface of the operation platform and located beside the four support columns, and the hand-operated threaded rod is mounted on the first fixing blocks and can rotate relative to the first fixing blocks through hand operation; the second fixed block is fixed at the top of the support column, and a threaded through hole is formed in the second fixed block and is opposite to the hand-operated threaded rod.
Further, the supporting device comprises a fixed block fixed on the bottom plate, and a threaded hole is formed in the fixed block; the screw rod is in threaded connection with the threaded hole of the fixed block; the upper end of the screw rod is fixedly connected with a driving block, and the lower end of the screw rod is fixedly connected with a foot pad; the driving block is fixed with a driving handle, the driving handle is driven through rotation, the height of the pad foot can be adjusted, and the pad foot is put down to support the ground stress when the platform works so as to support the weight of the lifting platform for overhauling the distribution transformer on the whole column.
Furthermore, the four support columns comprise a threaded column and three guide support columns; the surface of the threaded column is provided with external threads, and the surface of the guide support column is smooth.
Furthermore, second fixed blocks at the three guide supporting columns are fixed at the tops of the corresponding guide supporting columns; the second fixed block of screw thread post department sets up in the operation platform top surface, and just lies in screw thread post both sides with corresponding first fixed block.
Further, when the operation platform is lifted to the top working position, the hand-operated threaded rod is in threaded connection with the corresponding second fixed block.
Furthermore, a nut is fixed at the matching position of the operation platform and the threaded column, and the nut and the threaded column are matched to form the feed screw and nut mechanism.
Further, the lower part of the threaded column is also provided with an outer gear ring; the bottom plate is provided with a motor, an output shaft of the motor is fixedly connected with a driving gear, and the driving gear is meshed with the outer gear ring.
Furthermore, a locking mechanism is also arranged on the bottom plate; the locking mechanism comprises a third fixed block, a fourth fixed block, a first moving block, a second moving block, a polished rod and a threaded rod; the third fixing block and the fourth fixing block are fixed on the upper surface of the bottom plate; the polished rod and the threaded rod are arranged between the third fixing block and the fourth fixing block in parallel; wherein the polish rod is fixedly arranged and used for guiding; the outer part of the threaded rod is connected with a driving handle which can rotate relative to the third fixing block and the fourth fixing block; the polished rod and the threaded rod are provided with a first moving block and a second moving block, and the first moving block and the second moving block are respectively matched with the threaded rod to form a first lead screw nut mechanism and a second lead screw nut mechanism; the first moving block and the second moving block are located on two sides of the driving gear, and first fixing teeth and second fixing teeth are oppositely arranged on the first moving block and the second moving block.
Furthermore, when the operation platform is at the working position, the first moving block and the second moving block can be driven to move in the opposite direction by rotating the driving handle, so that the first fixed teeth and the second fixed teeth are clamped into the teeth of the driving gear, and the resistance value drives the gear to rotate.
Furthermore, the driving gear and the outer gear ring both adopt cylindrical gears.
Compared with the prior art, the invention has the following beneficial effects: the invention provides a lifting platform for overhauling a distribution transformer on a column, which can ensure that a hydraulic cylinder can be kept at a corresponding height and cannot fall down in time of failure of the platform at a working position by arranging an anti-falling structure, a screw nut mechanism and a locking mechanism, thereby effectively ensuring the personal safety of an overhauler.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a front view of an initial state of a lifting platform for on-pole distribution transformer service of the present invention;
FIG. 2 is a top view of a lifting platform for servicing the distribution transformer on the column of FIG. 1;
FIG. 3 is a front view of the working condition of a lifting platform for servicing an on-pole distribution transformer of the present invention;
FIG. 4 is a top view of the lift platform for servicing the distribution transformer on the column of FIG. 3;
FIG. 5 is a top view of an initial state base plate of a lifting platform for on-pole distribution transformer maintenance in accordance with the present invention;
fig. 6 is a top view of a working-state base plate of a lifting platform for overhauling a distribution transformer on a column according to the present invention.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.
Referring to fig. 1 to 6, the present invention provides a lifting platform for repairing a distribution transformer on a column, which includes a base plate 1, an operation platform 2, a top frame 3, a support column, a jack 5 and a motor.
The bottom plate 1 is a rectangular plate, four idler wheels 11 are installed at the bottom of the bottom plate, and a drag rod 117 is hinged to one side of the bottom plate, so that the whole platform can be moved conveniently. Four supporting devices are fixed on the bottom plate 1 and used for supporting the weight of the whole device, avoiding the roller 11 from being crushed due to stress, and meanwhile, the four supporting devices are also used for adjusting the level of the whole platform, so that the development of work is facilitated. The supporting device comprises a fixed block 12 fixed on the bottom plate, and a threaded hole is formed in the fixed block 12; the screw 14 is in threaded connection with a threaded hole of the fixed block 12; the upper end of the screw 14 is fixedly connected with a driving block 15, and the lower end is fixedly connected with a foot pad 13; a driving handle 16 is fixed on the driving block 15, the height of the foot pad 13 can be adjusted by rotating the driving handle 16, and the foot pad 13 is put down and supported on the ground to bear force when the platform works.
The work platform 2 is also a rectangular plate, and the periphery of the upper surface of the work platform is provided with guardrails 21.
Four support columns are vertically and upwards arranged on the bottom plate 1; four support columns are distributed at four corners of the rectangle. The four support columns include a threaded column 41 and three guide support columns 42. The surface of the threaded column 41 is provided with external threads, and the surface of the guide supporting column 42 is smooth. The tops of the four support columns are fixed together by a top frame 3. Bearings are mounted at the bottom and top of the threaded post 41, respectively, and the threaded post 41 is rotatable relative to the base plate 1 and the top frame 3.
The bottom of the jack 5 is arranged at the center of the base 1, and the upper part of the jack is fixedly connected with the center of the bottom of the operation platform 2 and used for jacking the operation platform 2.
The top frame 3 is a rectangular frame formed by connecting four connecting plates; the top surface of the operation platform 2 is provided with a pit, and when the operation platform 2 is lifted to the topmost working position, the top frame 3 is embedded into the pit; and the top surface of the top frame 3 is flush with the top surface of the work platform 2. Referring to fig. 2 and 4, the lifting platform for overhauling the distribution transformer on the column of the present invention further comprises an anti-falling structure, wherein the anti-falling structure comprises a first fixed block 22, a second fixed block 24 and a hand-operated threaded rod 23. First fixed block 22 is all fixed to be set up in 2 top surfaces of operation platform, and is located four support column sides, and hand threaded rod 23 is installed on first fixed block 22 to can rotate through hand for first fixed block 22. The second fixed blocks 24 at the three guiding support columns 42 are fixed at the tops of the corresponding guiding support columns 42; the second fixing blocks 24 at the threaded columns 41 are arranged on the top surface of the work platform 2 and located at two sides of the threaded columns 41 corresponding to the first fixing blocks 22. The second fixed block 24 is provided with a threaded through hole opposite to the hand-operated threaded rod 23. Referring to fig. 4, when the work platform 2 is lifted to the top-most working position, the top frame 3 is inserted into the pit; through the hand threaded rod 23 of the maintenance worker and the corresponding 24 threaded connections of the second fixed block, the whole operation platform 2 is hung at the tops of the four supporting columns through the anti-falling structure and cannot fall down.
The four support columns penetrate through the operation platform 2; a nut is fixed at the matching position of the operation platform 2 and the threaded column 41, and the nut and the threaded column 41 are matched to form a feed screw and nut mechanism. The other three guiding support columns 42 are matched with the operation platform 2 and used for supporting and guiding the operation platform 2, so that the stable ascending and descending of the operation platform 2 are ensured.
Referring to fig. 5 and 6, the lower portion of the threaded column 41 is further provided with an external gear ring 411; a motor (not shown) is mounted on the base plate 1, and a driving gear 61 is fixedly connected to an output shaft of the motor and meshed with the outer ring gear 411.
In the invention, the jacking of the working platform 2 mainly depends on the acting force of the jack 5, when the jack 5 works to jack the working platform 2, the rotation of the motor 2 drives the outer gear ring 411 to rotate through the driving gear 61, and then drives the threaded column 41 to rotate; the rotation speed of the motor is matched with the jacking speed of the jack 5, so that the work platform 2 can stably ascend, and the work platform 2 cannot be hindered from ascending by a screw rod and nut mechanism formed by the work platform 2 and the threaded column 41. When the work platform 2 reaches the top working position, the jack 5 and the motor are stopped synchronously. At this time, if the jack 5 fails, the working platform 2 will not fall down as long as the screw column 41 does not rotate due to the existence of the screw-nut mechanism between the working platform 2 and the screw column 41. The driving gear 61 and the external gear ring 411 are cylindrical gears with large tooth widths so as to be capable of bearing large acting force. Furthermore, the bottom plate 1 is further provided with a locking mechanism for locking the driving gear 61, so that the threaded column 41 can not rotate absolutely when the operation platform 2 is at the working position, and the operation platform 2 can not fall down even if the jack 5 fails at the working position. The locking mechanism comprises a third fixed block 71, a fourth fixed block 72, a first moving block 73, a second moving block 74, a polished rod 75 and a threaded rod 76. The third fixing block 71 and the fourth fixing block 72 are fixed on the upper surface of the base plate 1. The polish rod 75 and the threaded rod 76 are arranged between the third fixed block 71 and the fourth fixed block 72 in parallel; wherein the polish rod 75 is fixedly arranged for guiding; a driving knob 761 is externally connected to the threaded rod 76 and can rotate with respect to the third fixing block 71 and the fourth fixing block 72. The polished rod 75 and the threaded rod 76 are provided with a first moving block 73 and a second moving block 74, and the first moving block 73 and the second moving block 74 are respectively matched with the threaded rod 76 to form a first lead screw nut mechanism and a second lead screw nut mechanism. The first moving block 73 and the second moving block 74 are located at both sides of the driving gear 61, and the first fixed teeth 731 and the second fixed teeth 732 are oppositely disposed on the first moving block 73 and the second moving block 74. When the work platform 2 is in the working position, the rotation driving handle 761 drives the first moving block 73 and the second moving block 74 to move in the opposite direction, and the first fixed teeth 731 and the second fixed teeth 732 are clamped into the teeth of the driving gear 61, so that the driving gear 61 can be effectively prevented from rotating. When released, the driving knob 761 is rotated reversely, and the first fixing teeth 731 and the second fixing teeth 732 move backward to be disengaged from the driving gear 61.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (1)
1. A lifting platform for overhauling a distribution transformer on a column is characterized by comprising a bottom plate (1), an operation platform (2), a top frame (3), a support column and a jack (5);
a plurality of supporting devices are fixed on the bottom plate (1) and are used for supporting the weight of the lifting platform for overhauling the distribution transformer on the whole column when the lifting platform for overhauling the distribution transformer on the column is in a working state;
four support columns are vertically and upwards arranged on the bottom plate (1); the four support columns penetrate through the operation platform (2) and are connected with the top frame (3);
the bottom of the jack (5) is arranged at the center of the base (1), and the upper part of the jack is fixedly connected with the center of the bottom of the operation platform (2) and used for jacking the operation platform (2);
the top frame (3) is a rectangular frame formed by connecting four connecting plates; the top surface of the operation platform (2) is provided with a pit, and when the operation platform (2) is lifted to the topmost working position, the top frame (3) is embedded into the pit; the top surface of the top frame (3) is flush with the top surface of the operation platform (2);
the working platform (2) is also provided with an anti-falling structure; the anti-falling structure comprises a first fixed block (22), a second fixed block (24) and a hand-operated threaded rod (23); the first fixing blocks (22) are fixedly arranged on the top surface of the operation platform (2) and located beside the four support columns, and the hand-operated threaded rods (23) are mounted on the first fixing blocks (22) and can rotate relative to the first fixing blocks (22) through hand operation; the second fixing block (24) is fixed at the top of the support column, and a threaded through hole is formed in the second fixing block (24) opposite to the hand-operated threaded rod (23);
the four support columns comprise a threaded column (41) and three guide support columns (42); the surface of the threaded column (41) is provided with external threads, and the surface of the guide supporting column (42) is smooth;
a nut is fixed at the matching position of the operation platform (2) and the threaded column (41), and the nut and the threaded column (41) are matched to form a feed screw and nut mechanism;
the second fixed blocks (24) at the three guide supporting columns (42) are fixed at the tops of the corresponding guide supporting columns (42); the second fixing block (24) at the threaded column (41) is arranged on the top surface of the operation platform (2), and is positioned at two sides of the threaded column (41) corresponding to the first fixing block (22);
the lower part of the threaded column (41) is also provided with an outer gear ring (411); a motor is arranged on the bottom plate (1), a driving gear (61) is fixedly connected to an output shaft of the motor, and the driving gear is meshed with the outer gear ring (411);
the bottom plate (1) is also provided with a locking mechanism; the locking mechanism comprises a third fixed block (71), a fourth fixed block (72), a first moving block (73), a second moving block (74), a polished rod (75) and a threaded rod (76); the third fixing block (71) and the fourth fixing block (72) are fixed on the upper surface of the bottom plate (1); the polish rod (75) and the threaded rod (76) are arranged between the third fixing block (71) and the fourth fixing block (72) in parallel; wherein the polish rod (75) is fixedly arranged and used for guiding; a driving handle (761) is connected to the outside of the threaded rod (76) and can rotate relative to the third fixed block (71) and the fourth fixed block (72); a first moving block (73) and a second moving block (74) are mounted on the polished rod (75) and the threaded rod (76), and the first moving block (73) and the second moving block (74) are respectively matched with the threaded rod (76) to form a first lead screw nut mechanism and a second lead screw nut mechanism; the first moving block (73) and the second moving block (74) are positioned on two sides of the driving gear (61), and the first moving block (73) and the second moving block (74) are oppositely provided with first fixed teeth (731) and second fixed teeth (732);
when the working platform (2) is in a working position, the first moving block (73) and the second moving block (74) can be driven to move in the opposite direction by rotating the driving handle (761), so that the first fixed teeth (731) and the second fixed teeth (732) are clamped into the teeth of the driving gear (61), and the resistance value driving gear (61) rotates;
the driving gear (61) and the outer gear ring (411) both adopt cylindrical gears;
the supporting device comprises a fixing block (12) fixed on the bottom plate, and a threaded hole is formed in the fixing block (12); the screw (14) is in threaded connection with a threaded hole of the fixed block (12); the upper end of the screw rod (14) is fixedly connected with a driving block (15), and the lower end is fixedly connected with a foot pad (13); a driving handle (16) is fixed on the driving block (15), the height of the pad foot (13) can be adjusted by rotating the driving handle (16), and when the platform works, the pad foot (13) is put down and supported on the ground to bear force so as to support the weight of the lifting platform for overhauling the distribution transformer on the whole column;
when the operation platform (2) is lifted to the top working position, the hand-operated threaded rod (23) is in threaded connection with the corresponding second fixed block (24);
when the lifting platform for overhauling the distribution transformer on the column works, the operation platform (2) is jacked mainly by the acting force of the jack (5), and when the jack (5) works to jack the operation platform (2), the motor rotates to drive the outer gear ring (411) to rotate through the driving gear (61), so that the threaded column (41) is driven to rotate; the rotating speed of the motor is matched with the jacking speed of the jack (5), so that the operation platform (2) can stably rise, and the rising of the operation platform (2) cannot be hindered by a screw rod and nut mechanism formed by the operation platform (2) and the threaded column (41); when the operation platform (2) reaches the top working position, the jack (5) and the motor stop synchronously; at the moment, if the jack (5) fails, the operation platform (2) cannot fall down as long as the threaded column (41) does not rotate due to the existence of a screw rod nut mechanism between the operation platform (20) and the threaded column (41), the driving gear (61) and the outer gear ring (411) are cylindrical gears, a locking mechanism on the bottom plate (1) is used for locking the driving gear (61), so that the threaded column (41) cannot rotate absolutely when the operation platform (2) is at a working position, when the operation platform (2) is at the working position, the rotation driving handle (761) drives the first moving block (73) and the second moving block (74) to move in opposite directions, the first fixed teeth (731) and the second fixed teeth (732) are clamped into the teeth of the driving gear (61), the effective resistance value driving gear (61) can rotate, and when the operation platform (2) is loosened, the driving handle (761) is rotated reversely, the first fixed teeth (731) and the second fixed teeth (732) move back to back and are disengaged from the driving gear (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911293724.9A CN111017833B (en) | 2019-12-16 | 2019-12-16 | Lifting platform for overhauling distribution transformer on column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911293724.9A CN111017833B (en) | 2019-12-16 | 2019-12-16 | Lifting platform for overhauling distribution transformer on column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111017833A CN111017833A (en) | 2020-04-17 |
| CN111017833B true CN111017833B (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911293724.9A Active CN111017833B (en) | 2019-12-16 | 2019-12-16 | Lifting platform for overhauling distribution transformer on column |
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| Country | Link |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112768188A (en) * | 2020-12-28 | 2021-05-07 | 广州市冬感网络科技有限公司 | Installation fixing device of transformer |
| CN113716484B (en) * | 2021-09-13 | 2023-04-14 | 扬州工业职业技术学院 | Lift for engineering |
| CN115321447B (en) * | 2022-10-11 | 2023-04-07 | 南通至顺聚氨酯材料有限公司 | Lifting platform for maintenance operation |
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| JP2885525B2 (en) * | 1991-02-26 | 1999-04-26 | 豊興工業株式会社 | Auto lift |
| CN102674195A (en) * | 2012-04-06 | 2012-09-19 | 罗小松 | Moment lifting jack |
| CN203582416U (en) * | 2013-12-04 | 2014-05-07 | 中国水电四局(酒泉)新能源装备有限公司 | Multifunctional installing vehicle for accessory installing in wind power generation tower |
| CN204198338U (en) * | 2014-08-07 | 2015-03-11 | 深圳市凯卓立液压设备有限公司 | A kind of vehicle-mounted floating formula vehicle maintenance and repair lifting machine |
| CN105967097A (en) * | 2016-06-16 | 2016-09-28 | 成都迅德科技有限公司 | Novel lifting device for building |
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2019
- 2019-12-16 CN CN201911293724.9A patent/CN111017833B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2885525B2 (en) * | 1991-02-26 | 1999-04-26 | 豊興工業株式会社 | Auto lift |
| CN102674195A (en) * | 2012-04-06 | 2012-09-19 | 罗小松 | Moment lifting jack |
| CN203582416U (en) * | 2013-12-04 | 2014-05-07 | 中国水电四局(酒泉)新能源装备有限公司 | Multifunctional installing vehicle for accessory installing in wind power generation tower |
| CN204198338U (en) * | 2014-08-07 | 2015-03-11 | 深圳市凯卓立液压设备有限公司 | A kind of vehicle-mounted floating formula vehicle maintenance and repair lifting machine |
| CN105967097A (en) * | 2016-06-16 | 2016-09-28 | 成都迅德科技有限公司 | Novel lifting device for building |
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| CN111017833A (en) | 2020-04-17 |
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Effective date of registration: 20241008 Address after: 100031 No. 41 West Main Street, Qianmen, Beijing, Xicheng District Patentee after: STATE GRID BEIJING ELECTRIC POWER Co. Country or region after: China Patentee after: STATE GRID CORPORATION OF CHINA Patentee after: Haidian Beijing power supply industry development Co.,Ltd. Address before: 100031 No. 41 West Main Street, Qianmen, Beijing, Xicheng District Patentee before: STATE GRID BEIJING ELECTRIC POWER Co. Country or region before: China Patentee before: STATE GRID CORPORATION OF CHINA |