CN114873535A - Electric intelligent cable trench cover plate lifting tool - Google Patents

Electric intelligent cable trench cover plate lifting tool Download PDF

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Publication number
CN114873535A
CN114873535A CN202210602750.0A CN202210602750A CN114873535A CN 114873535 A CN114873535 A CN 114873535A CN 202210602750 A CN202210602750 A CN 202210602750A CN 114873535 A CN114873535 A CN 114873535A
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China
Prior art keywords
plate
groove
groove plate
fixed
winding
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Granted
Application number
CN202210602750.0A
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Chinese (zh)
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CN114873535B (en
Inventor
曾永浩
何浩华
罗斌彬
李学源
于善辉
詹沛霖
陈冰
邓雅仪
郭宏波
张仕财
宋大乐
林学明
莫启强
许明雷
邓柱基
陆显明
李文清
陆建国
李�真
郑涛
胡伯科
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Foshan Power Supply Bureau of Guangdong Power Grid Corp
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Foshan Power Supply Bureau of Guangdong Power Grid Corp
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Application filed by Foshan Power Supply Bureau of Guangdong Power Grid Corp filed Critical Foshan Power Supply Bureau of Guangdong Power Grid Corp
Priority to CN202210602750.0A priority Critical patent/CN114873535B/en
Publication of CN114873535A publication Critical patent/CN114873535A/en
Application granted granted Critical
Publication of CN114873535B publication Critical patent/CN114873535B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, 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
    • B66F19/00Hoisting, lifting, hauling or pushing, not otherwise provided for
    • B66F19/005Lifting devices for manhole covers
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/60Planning or developing urban green infrastructure

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

The invention discloses an electric intelligent cable trench cover lifting tool, which relates to the technical field of cable trench covers and comprises two foldable support assemblies, wherein each support assembly comprises a first groove plate, a second groove plate is rotatably arranged at the end of the inner end of each groove of the first groove plate, a support inclined rod is rotatably connected to the bottom end, far away from the first groove plate, in the second groove plate, a limit pin shaft is arranged at one end, far away from the joint of the second groove plates, in the first groove plate, the top end of each second groove plate is fixedly provided with a positioning rod, a positioning groove is formed in each positioning rod, and a plurality of moving wheels are arranged at the bottom of each first groove plate. According to the invention, the triangular support is formed after the support diagonal rods, the first groove plate and the second groove plate are unfolded, so that the overall stability of the device and the convenience in dismounting the device are improved, the lifted cover plate can be prevented from sliding downwards, and the safety of the transfer work of the device is improved.

Description

Electric intelligent cable trench cover plate lifting tool
Technical Field
The invention relates to the technical field of cable trench cover plates, in particular to an electric intelligent cable trench cover plate lifting and placing tool.
Background
With the high-speed development of social economy and the continuous improvement of the living standard of people, the national power development is also accelerated continuously, the power grid construction is developed rapidly, the operating voltage level of a power grid system is improved continuously, the scale is enlarged continuously, a plurality of wires are interwoven into a power network in China, the transmission of electric energy transmission without leaving the wires is usually carried out on cables periodically, corresponding cable well covers need to be moved during maintenance, the cable trench cover plate is light and 200 jin, a heavy person can reach 300 jin, and two strong constructors can lift the cables by using up the full power.
The tradition method of moving the apron is that the manual work is prized the apron through the crow bar, not only waste time and energy, the apron is damaged easily, the easy slippage of crow bar moreover, it can cause the injury to the operation personnel to careless slightly, also there is not few cable trench cover lifting means at present to alleviate intensity of labour, be not convenient for carry out the convenient dismouting work of device, it is lower to cause the device portability, in addition the promotion work back of apron need stabilize the restriction effect, avoid the apron landing downwards, cause the reduction of transportation work security.
Disclosure of Invention
The invention aims to provide an electric intelligent cable trench cover plate lifting tool, which aims to solve the technical problems that the portability of a device is low due to the fact that the device is inconvenient to assemble and disassemble, and the safety of transfer work is reduced due to the fact that the cover plate needs to be stably limited after lifting work, and the cover plate is prevented from sliding downwards.
The invention provides an electric intelligent cable trench cover plate lifting tool which comprises two foldable and storable support assemblies, wherein each support assembly comprises a first groove plate, a second groove plate is rotatably arranged at the end head in a groove of the first groove plate, a support inclined rod is rotatably connected to the bottom end, far away from the first groove plate, in the second groove plate, a limit pin shaft is arranged at one end, far away from the joint of the second groove plate, in the first groove plate, the top end of the second groove plate is fixedly provided with a positioning rod, a positioning groove is formed in the positioning rod, and a plurality of moving wheels are arranged at the bottom of the first groove plate;
the lifting components are fixed at the two ends of the bottom of the top plate and used for adjusting the height of the top plate, and the lifting components are matched with the positioning grooves in the positioning rods;
the winding component is mounted on the top plate, a plurality of winding ropes are wound on the winding component, and the bottom ends of the winding ropes are connected with the hook component;
the winding rope limiting device is characterized in that a locking assembly is arranged on one side of the top plate and used for limiting the winding rope, and the locking assembly is sleeved on the outer side of the winding rope.
Furthermore, a limiting hole is formed in the inner wall of the bottom of the first groove plate, and the limiting hole is matched with the limiting pin shaft.
Furthermore, the lifting assembly comprises a lifting rod fixedly connected with the bottom of the top plate, the lifting rod is inserted into the positioning groove in the positioning rod in a sliding mode, a plurality of positioning holes with the same specification are formed in the lifting rod and the positioning rod, and a positioning bolt is arranged between the lifting rod and the positioning hole in the positioning rod.
Furthermore, a supporting block is fixed on one side of the lifting rod, and the top end of the supporting block is fixedly connected with the bottom of the top plate.
Further, the rolling assembly comprises a rolling motor installed on the top plate, a rotating shaft is fixed to an output shaft of the rolling motor, a plurality of rolling wheels are fixed to the rotating shaft, and the rolling rope is wound on the rolling wheels.
Further, locking Assembly include with roof fixed connection's fixed plate, be fixed with the cover on the fixed plate and establish the outside stand pipe of rolling rope, be provided with in the stand pipe and be used for the compact heap of rolling rope pressing effect, one side fixedly connected with pushing mechanism of compact heap.
Furthermore, pushing mechanism is including installing the extension board of fixed plate one side, one side of extension board is fixed with electric putter, electric putter's extension end is fixed with the push pedal, one side of push pedal is fixed with the guide bar, the guide bar passes the guide tube inside wall with compact heap fixed connection.
Furthermore, a rack is fixed on one side, close to the coiling rope, of the pressing block, and a tooth groove is formed in one side of the rack.
Furthermore, the hook subassembly is including installing the lifter plate of receipts winding rope bottom, lifter plate bottom both sides all are fixed with the connection rope, the bottom mounting of connecting the rope has the couple.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, the first groove plate can be used for carrying out turnover and storage work on the second groove plate, the second groove plate can be used for carrying out storage work on the supporting diagonal rod, the detachable and storage work purpose of the device is realized, and the limiting pin shaft can be used for limiting the outer side of the bottom end of the unfolded supporting diagonal rod, so that the supporting diagonal rod, the first groove plate and the second groove plate form triangular support work after being unfolded, and the integral stability of the device is improved.
(2) The positioning groove on the positioning rod can be used for connecting the lifting components at two ends of the top plate, and the positioning bolt is used for connecting the lifting rod and the positioning rod after the mounting height of the lifting rod in the positioning groove is adjusted, so that the use is convenient.
(3) According to the invention, the winding motor can drive the winding wheel on the rotating shaft to rotate, the winding and unwinding work purpose of the winding rope is realized, the driving acting force is provided for the cover plate lifting work, the electric push rod can drive the pressing block to move towards the winding rope side, the pressing limiting effect on the winding rope is realized by matching with the extrusion effect of the inner side wall of the guide pipe, the cover plate is prevented from falling downwards, and the transfer work safety of the device is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a first perspective view of the present invention;
FIG. 2 is a schematic diagram of a second perspective view of the present invention;
FIG. 3 is a schematic structural view illustrating an assembly operation state of the present invention;
FIG. 4 is a schematic structural view illustrating a storage state of the support assembly according to the present invention;
FIG. 5 is a schematic view of a lifting assembly according to the present invention;
FIG. 6 is a schematic cross-sectional view of the locking assembly of the present invention;
fig. 7 is a schematic top view of the locking assembly of the present invention.
Reference numerals:
1. a first slot plate; 2. a moving wheel; 3. a second slot plate; 4. supporting the diagonal rods; 5. positioning a rod; 6. a top plate; 7. a lifting rod; 8. a support block; 9. a winding motor; 10. a rotating shaft; 11. a winding wheel; 12. a fixing plate; 13. a guide tube; 14. winding the rope; 15. a lifting plate; 16. connecting ropes; 17. hooking; 18. positioning holes; 19. positioning the bolt; 20. a limiting hole; 21. a limiting pin shaft; 22. an extension plate; 23. an electric push rod; 24. pushing the plate; 25. a guide bar; 26. a compression block; 27. a rack.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 7, an embodiment of the present invention provides an electric intelligent cable trench cover lifting tool, which includes two foldable support assemblies, each support assembly includes a first groove plate 1, a second groove plate 3 is rotatably installed at an inner end of a groove of the first groove plate 1, the first groove plate 1 can turn over the second groove plate 3 to store the second groove plate, a support diagonal rod 4 is rotatably connected to a bottom end of the second groove plate 3 far away from the first groove plate 1, the second groove plate 3 can store the support diagonal rod 4, a limit pin 21 is disposed at an end of the first groove plate 1 far away from a connection of the second groove plate 3, the limit pin 21 can limit an outer side of a bottom end of the expanded support diagonal rod 4, so that the support diagonal rod 4, the first groove plate 1 and the second groove plate 3 form a triangular support operation after being expanded, thereby improving overall stability of the device, a positioning rod 5 is fixed at a top end of the second groove plate 3, the locating slot has been seted up on locating lever 5, and the locating slot on locating lever 5 can carry out 6 both ends lifting unit's of roof connection work, and a plurality of removal wheels 2 are installed to the bottom of first frid 1, remove wheel 2 and can realize that the device wholly removes work.
Roof 6, the bottom both ends of roof 6 all are fixed with the lifting unit who is used for 6 altitude mixture control works of roof, lifting unit and the locating lever on 5 locating groove looks adaptations of locating lever, and roof 6 can be used for the integral erection work of rolling subassembly, and lifting unit can carry out the regulation work of different mounting heights in locating lever 5.
The winding assembly is installed on the top plate 6 and is wound with a plurality of winding ropes 14, the bottom ends of the winding ropes 14 are connected with the hook assembly, and the winding assembly can achieve the purpose of lifting the cover plate through winding and unwinding the winding ropes 14.
The locking assembly is arranged on one side of the top plate 6 and used for limiting the coiling rope 14, the locking assembly is sleeved on the outer side of the coiling rope 14, the coiling rope 14 can be limited through the locking assembly, and the situation that the cover plate slides down after being lifted by the cover plate is avoided.
Specifically, the bottom inner wall of the first groove plate 1 is provided with a limiting hole 20, the limiting hole 20 is matched with the limiting pin shaft 21, the limiting hole 20 can be used for installing the limiting pin shaft 21 in an inserting mode, and then the bottom end of the support inclined rod 4 after expansion can be limited.
Specifically, lifting unit includes the lifter 7 with 6 bottom fixed connection of roof, lifter 7 slides and pegs graft in the constant head tank on locating lever 5, a plurality of locating holes 18 that the specification is the same have all been seted up on lifter 7 and locating lever 5, be provided with positioning bolt 19 between the locating hole 18 on lifter 7 and the locating lever 5, through adjusting lifter 7 behind the mounting height in the constant head tank, utilize positioning bolt 19 to carry out the connection work between lifter 7 and the locating lever 5, facilitate the use.
Specifically, one side of lifter 7 is fixed with supporting shoe 8, and the top and the roof 6 bottom fixed connection of supporting shoe 8, supporting shoe 8 can increase the structural strength between lifter 7 and the roof 6, improve the holistic stability of device.
Specifically, the winding assembly comprises a winding motor 9 installed on the top plate 6, an output shaft of the winding motor 9 is fixed with a rotating shaft 10, a plurality of winding wheels 11 are fixed on the rotating shaft 10, a winding rope 14 is wound on the winding wheels 11, the winding motor 9 can drive the winding wheels 11 on the rotating shaft 10 to rotate, the winding and unwinding purposes of the winding rope 14 are achieved, and driving acting force is provided for cover plate lifting work.
Specifically, locking Assembly includes the fixed plate 12 with 6 fixed connection of roof, is fixed with on the fixed plate 12 to overlap and establishes the stand pipe 13 at the coiling rope 14 outside, is provided with the compact heap 26 that is used for coiling rope 14 to compress tightly the effect in the stand pipe 13, one side fixedly connected with pushing mechanism of compact heap 26, and pushing mechanism can drive compact heap 26 and move to coiling rope 14 side, cooperates the squeezing action of 13 inside walls of stand pipe, realizes the restriction effect purpose that compresses tightly to coiling rope 14.
Specifically, pushing mechanism is including installing extension plate 22 in fixed plate 12 one side, one side of extension plate 22 is fixed with electric putter 23, electric putter 23's extension end is fixed with push pedal 24, one side of push pedal 24 is fixed with guide bar 25, guide bar 25 passes guide tube 13 inside wall and compact heap 26 fixed connection, electric putter 23 can drive the compact heap 26 of push pedal 24 one side guide bar 25 and carry out reciprocating motion, the realization is to the compressing tightly of rolling rope 14 and release work purpose.
Specifically, a rack 27 is fixed on one side of the pressing block 26 close to the winding rope 14, and a toothed groove rack 27 is formed in one side of the rack 27, so that the limiting effect on the winding rope 14 can be increased after the pressing block 26 is pressed, and the winding rope 14 and the pressing block 26 are prevented from sliding relatively.
Specifically, the hook subassembly is including installing lifter plate 15 in the 14 bottoms of receipts rope, and 15 bottoms both sides of lifter plate all are fixed with and connect rope 16, and the bottom mounting of connecting rope 16 has couple 17, and the couple 17 of 15 bottoms of lifter plate can carry out the hook work to the fretwork hole of apron, is convenient for promote the transportation work.
The specific working method comprises the following steps: firstly, unfolding two supporting components to enable the supporting diagonal rod 4, the first groove plate 1 and the second groove plate 3 to form triangular supporting work after being unfolded, then inserting a limiting pin shaft 21 into a limiting hole 20 to limit the outer side of the bottom end of the unfolded supporting diagonal rod 4, then inserting two lifting rods 7 at the bottom of a top plate 6 into positioning grooves on positioning rods 5 of the two supporting components, adjusting the installation height of the lifting rods 7 in the positioning grooves, utilizing a positioning bolt 19 to carry out the connection work between the lifting rods 7 and the positioning rods 5, after the device assembly work is finished, switching on a power supply of the device, connecting a hook 17 on the hook component with a cover plate, driving a winding motor 9 to drive a winding wheel 11 on a rotating shaft 10 to rotate to realize the winding work of a winding rope 14, further driving the cover plate to carry out the lifting work, lifting the cover plate to a certain height, can drive compact heap 26 through electric putter 23 and to the 14 side motion of coiling rope, the squeezing action of cooperation stand pipe 13 inside wall realizes the restriction effect purpose that compresses tightly to coiling rope 14, avoids the apron to slide down, and last thrust unit moves to the installation destination with the apron after promoting, resets through electric putter 23, and rolling motor 9 puts down the apron, realizes swiftly lifting of apron and puts down the work purpose.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (9)

1. The electric intelligent cable trench cover plate lifting tool is characterized by comprising two foldable support assemblies, wherein each support assembly comprises a first groove plate (1), a second groove plate (3) is rotatably mounted at the end of the first groove plate (1) in the groove, a support inclined rod (4) is rotatably connected to the bottom end, far away from the first groove plate (1), of the second groove plate (3), a limit pin shaft (21) is arranged at one end, far away from the connection part of the second groove plate (3), of the first groove plate (1), a positioning rod (5) is fixed to the top end of the second groove plate (3), a positioning groove is formed in the positioning rod (5), and a plurality of moving wheels (2) are mounted at the bottom of the first groove plate (1);
the lifting assembly is matched with the positioning groove on the positioning rod (5);
the winding assembly is mounted on the top plate (6), a plurality of winding ropes (14) are wound on the winding assembly, and the bottom ends of the winding ropes (14) are connected with hooking assemblies;
the locking component is arranged on one side of the top plate (6) and used for limiting the coiling rope (14), and the locking component is sleeved on the outer side of the coiling rope (14).
2. The electric intelligent cable trench cover lifting tool according to claim 1, wherein: a limiting hole (20) is formed in the inner wall of the bottom of the first groove plate (1), and the limiting hole (20) is matched with the limiting pin shaft (21).
3. The electric intelligent cable trench cover lifting tool according to claim 1, wherein: the lifting assembly comprises a lifting rod (7) fixedly connected with the bottom of the top plate (6), the lifting rod (7) is inserted into a positioning groove in the positioning rod (5) in a sliding mode, a plurality of positioning holes (18) with the same specification are formed in the lifting rod (7) and the positioning rod (5), and a positioning bolt (19) is arranged between the lifting rod (7) and the positioning holes (18) in the positioning rod (5).
4. The electric intelligent cable trench cover lifting tool according to claim 3, wherein: a supporting block (8) is fixed on one side of the lifting rod (7), and the top end of the supporting block (8) is fixedly connected with the bottom of the top plate (6).
5. The electric intelligent cable trench cover lifting tool according to claim 1, wherein: the winding assembly comprises a winding motor (9) installed on the top plate (6), an output shaft of the winding motor (9) is fixed with a rotating shaft (10), a plurality of winding wheels (11) are fixed on the rotating shaft (10), and a winding rope (14) is wound on the winding wheels (11).
6. The electric intelligent cable trench cover lifting tool according to claim 1, wherein: the locking assembly comprises a fixing plate (12) fixedly connected with the top plate (6), a guide pipe (13) sleeved outside the coiling rope (14) is fixed on the fixing plate (12), a pressing block (26) used for pressing the coiling rope (14) is arranged in the guide pipe (13), and a pushing mechanism is fixedly connected to one side of the pressing block (26).
7. The electric intelligent cable trench cover lifting tool according to claim 6, wherein: push mechanism is including installing extension board (22) of fixed plate (12) one side, one side of extension board (22) is fixed with electric putter (23), the extension end of electric putter (23) is fixed with push pedal (24), one side of push pedal (24) is fixed with guide bar (25), guide bar (25) pass guide tube (13) inside wall with compact heap (26) fixed connection.
8. The electric intelligent cable trench cover lifting tool according to claim 7, wherein: a rack (27) is fixed on one side, close to the winding rope (14), of the pressing block (26), and a tooth groove is formed in one side of the rack (27).
9. The electric intelligent cable trench cover lifting tool according to claim 1, wherein: the hook subassembly is including installing lifter plate (15) in receipts rolling rope (14) bottom, lifter plate (15) bottom both sides all are fixed with and connect rope (16), the bottom mounting of connecting rope (16) has couple (17).
CN202210602750.0A 2022-05-30 2022-05-30 Electric intelligent cable trench cover lifting tool Active CN114873535B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210602750.0A CN114873535B (en) 2022-05-30 2022-05-30 Electric intelligent cable trench cover lifting tool

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Application Number Priority Date Filing Date Title
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CN114873535B CN114873535B (en) 2023-08-11

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108821161A (en) * 2018-05-31 2018-11-16 国网山东省电力公司郓城县供电公司 A kind of device for removal cable trench cover
CN210105345U (en) * 2019-05-17 2020-02-21 中建二局第二建筑工程有限公司 Large-scale steel structure mounting equipment
CN212503740U (en) * 2020-05-28 2021-02-09 广东恒业水泥制品有限公司 Cable trench cover lifts by crane instrument
CN112499484A (en) * 2020-11-12 2021-03-16 广东电网有限责任公司佛山供电局 Auxiliary opening device for cable well cover
CN113622648A (en) * 2021-08-17 2021-11-09 杨莉 Lifting support equipment for building construction
CN114105058A (en) * 2021-12-01 2022-03-01 国网河南省电力公司商丘供电公司 Cable trench cover plate opening tool

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108821161A (en) * 2018-05-31 2018-11-16 国网山东省电力公司郓城县供电公司 A kind of device for removal cable trench cover
CN210105345U (en) * 2019-05-17 2020-02-21 中建二局第二建筑工程有限公司 Large-scale steel structure mounting equipment
CN212503740U (en) * 2020-05-28 2021-02-09 广东恒业水泥制品有限公司 Cable trench cover lifts by crane instrument
CN112499484A (en) * 2020-11-12 2021-03-16 广东电网有限责任公司佛山供电局 Auxiliary opening device for cable well cover
CN113622648A (en) * 2021-08-17 2021-11-09 杨莉 Lifting support equipment for building construction
CN114105058A (en) * 2021-12-01 2022-03-01 国网河南省电力公司商丘供电公司 Cable trench cover plate opening tool

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