CN113603034A - Cable pulling cover plate device - Google Patents
Cable pulling cover plate device Download PDFInfo
- Publication number
- CN113603034A CN113603034A CN202110901493.6A CN202110901493A CN113603034A CN 113603034 A CN113603034 A CN 113603034A CN 202110901493 A CN202110901493 A CN 202110901493A CN 113603034 A CN113603034 A CN 113603034A
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- hand
- cable cover
- cover plate
- connecting rod
- dump truck
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- 238000004804 winding Methods 0.000 claims abstract description 4
- 238000004891 communication Methods 0.000 claims description 7
- 238000013461 design Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Classifications
-
- 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
- B66F19/00—Hoisting, lifting, hauling or pushing, not otherwise provided for
- B66F19/005—Lifting devices for manhole covers
-
- 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
- B66F15/00—Crowbars or levers
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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 application discloses a cable pulling cover plate device, which comprises a hand-push tipping wagon, an electric winching machine and a connecting assembly; the connecting assembly comprises at least two connecting rods and at least two first connecting ropes; at least two connecting rods are in one-to-one correspondence with the first connecting ropes, and one end of each connecting rod is connected with one end of the corresponding first connecting rope; the other end of each connecting rod is provided with a connecting part which can be detachably connected with the cable cover plate; at least two first pulleys which are in one-to-one correspondence with the first connecting ropes are fixed at the front end of the body of the hand-push dump truck; the other end of each first connecting rope is wound around the corresponding first pulley; the electric winching machine is arranged on the hand-push tipping wagon, and a wire winding roller of the electric winching machine is provided with a second connecting rope; one end of the second connecting rope is respectively connected with the other end of each first connecting rope. The cable cover plate device solves the technical problems that the existing cable cover plate device is heavy, inconvenient to transport and move, poor in operation efficiency, single in function and poor in applicability.
Description
Technical Field
The application relates to the technical field of tipping wagons, in particular to a cable-pulling cover plate device.
Background
When the cable well is constructed and maintained, the cable cover plate needs to be lifted. The existing operation of lifting the cable cover plate is that the maintainer pries the cover plate with a stylus under most conditions, and the operation process is time-consuming and labor-consuming, and easily presses hands and feet, and is not convenient for moving the cable cover plate. In order to solve the not enough of artifical cable take-up apron, also have some cable take-up apron devices among the prior art, but these devices are mostly comparatively heavier, and the transportation of being inconvenient for finally leads to the operating efficiency still to exist not enoughly, and these device functions are comparatively single moreover, and the suitability is relatively poor.
Disclosure of Invention
In view of this, the present application provides a cable pulling cover plate device, which solves the technical problems of the prior cable pulling cover plate device that the cable pulling cover plate device is heavy, inconvenient to transport and move, and finally causes the operational efficiency to be still insufficient, and the cable pulling cover plate device has a single function and is poor in applicability.
In order to achieve the technical purpose, the application provides a cable pulling cover plate device which comprises a hand-push tipping wagon, an electric winching machine and a connecting assembly;
the connecting assembly comprises at least two connecting rods and at least two first connecting ropes;
the at least two connecting rods correspond to the first connecting ropes one to one, and one end of each connecting rod is connected with one end of the corresponding first connecting rope;
the other end of each connecting rod is provided with a connecting part which can be detachably connected with the cable cover plate;
at least two first pulleys which correspond to the first connecting ropes one to one are fixed at the front end of the body of the hand-push dump truck;
the other end of each first connecting rope is wound around the corresponding first pulley;
the electric winching machine is arranged on the hand-push dump truck, and a second connecting rope is arranged on a winding roller of the electric winching machine;
one end of the second connecting rope is connected with the other end of each first connecting rope.
Further, the length of the connecting rod is larger than the thickness of the cable cover plate;
the other end of the connecting rod can movably penetrate through a communication hole in the cable cover plate;
the connecting part is of a rod structure and is vertically connected with the other end of the connecting rod.
Furthermore, one end of the connecting rod is rotatably connected with one end of the first connecting rope.
Furthermore, one end of the first connecting rope is connected with a rotatable first lifting hook;
one end of the first connecting rod is provided with a first hanging ring matched with the first hanging hook.
Furthermore, one end of the second connecting rope is connected with a rotatable second hook;
one end of the first connecting rope is connected with a second lifting ring matched with the second lifting hook.
Further, the connecting rod is provided with a threaded rod section;
the threaded rod section is sleeved with a threaded sleeve in threaded fit;
when the connecting rod is connected and matched with the cable cover plate, the threaded sleeve and the connecting part clamp the cable cover plate.
Further, the electric winch is mounted on the outer front wall surface of the hand-push dump truck, or mounted on the outer bottom of the body of the hand-push dump truck, or mounted on the outer rear wall surface of the body of the hand-push dump truck.
Further, the electric winch is detachably mounted on the hand-push dump truck.
Further, the device also comprises a second pulley;
the second pulley is arranged on the outer front wall surface of the hand-push tipping wagon;
the other end of the first connecting rope is wound around the second pulley.
Furthermore, the bottom of the front end of the body of the hand-push dump truck is also provided with two accommodating pieces which correspond to the connecting rods one by one;
each accommodating part is provided with an elastic clamping groove for the movable clamping of the corresponding connecting rod.
According to the technical scheme, the electric winching machine and the connecting assembly are combined to the hand-push dump truck. The connecting assembly comprises at least two connecting rods and at least two first connecting ropes, one end of each connecting rod is connected with one end of each first connecting rope, the other end of each connecting rod is provided with a connecting part detachably connected with the cable cover plate, and the other end of each first connecting rope is wound around a first pulley arranged at the front end of the body of the hand-push dump truck and is connected with a second connecting rope of an electric winching machine arranged on the hand-push dump truck. Through the structural design, when the cable cover plate needs to be lifted and moved away, the hand-push dump truck can be pushed to the position of the cable cover plate to be lifted and carried, the winching machine is controlled by the remote controller matched with the electric winching machine to release the second connecting rope, the connecting part of the connecting rod is connected with the cable cover plate, after the connection is completed, a maintainer can press the handle of the hand-push dump truck by one hand, and then the winching machine is controlled by the remote controller to roll up the second connecting rope, so that the cable cover plate is lifted. After the cable cover plate is lifted, the hand-push dump truck can be directly pushed to convey the cable cover plate to a designated place, and the quick lifting and conveying work of the cable cover plate is completed.
This application is this device based on hand push tipper's improvement design in order to obtain, not only can be quick accomplish and lift transport work, and utilize hand push tipper leverage and portable function in the completion process, also more laborsaving, convenient to use. Moreover, even if the electric winching machine is not used, the cable cover plate can be lifted by directly utilizing the lever action, and the use is flexible. But also has the moving function of the hand-push dump truck, so that the whole device is convenient to move and easy to transport and move. More importantly, the loading effect of the hand-push dump truck is still kept, so that the device can be correctly used for transporting and carrying materials even if not used for lifting and carrying the cable cover plate, the use is multifunctional, the applicability is better, one end of a second connecting rope of the electric winching machine can be connected to a fixed point of a transportation destination, the power-assisted traction is provided, the hand-push dump truck is enabled to move more laborsavingly, the material transportation efficiency is further improved, and particularly the uphill condition is dealt with. In addition, the design scheme has the advantages of simple structure, low manufacturing cost and good application prospect.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a block diagram illustrating the overall process of operation of a cable cover device as provided herein;
FIG. 2 is a schematic view of a coupling rod with a threaded sleeve and a cable cover plate of a cable cover plate device provided in the present application;
in the figure: 100. a hand-push dump truck; 200. a cable cover plate; 201. a communicating hole; 1. a connecting rod; 11. a connecting portion; 12. a first hanging ring; 13. a threaded rod section; 2. a first connecting rope; 21. a first hook; 22. a second hoisting ring; 3. an electric grinder; 31. a second connecting rope; 311. a second hook; 41. a first pulley; 42. a second pulley; 5. a receiving member; 51. a card slot; 6. and (4) a threaded sleeve.
Detailed Description
The technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application.
In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. 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 embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
The embodiment of the application discloses a cable-pulling cover plate device.
Referring to fig. 1, an embodiment of a cable cover device provided in an embodiment of the present application includes:
a hand-propelled dump truck 100, an electric winching machine 3 and a connecting assembly. The hand-pushing type dump truck 100 can be a common hand-pushing type dump truck in the market, and the electric winching machine 3 can be a common small-sized electric winching device in the market, and the detailed structure is not described in detail.
The connecting component comprises at least two connecting rods 1 and at least two first connecting ropes 2; at least two connecting rods 1 and first connecting rope 2 one-to-one, the one end of each connecting rod 1 is connected with the 2 one end of the first connecting rope that correspond, and the other end of each connecting rod 1 is equipped with can dismantle the connecting portion 11 of being connected with cable apron 200. At least two connecting rods 1 can form at least two hoisting force application points for the cable cover plate 200 to guarantee stable hoisting, the first connecting rope 2 can be a steel wire rope, and the connecting rods 1 can also be made of steel, and are not limited specifically.
At least two first pulleys 41 corresponding to the first connection ropes 2 one by one are fixed to the front end of the body of the hand-push dump truck 100, and the other end of each first connection rope 2 is wound around the corresponding first pulley 41. Taking two as an example, the first pulley 41 may be disposed at the bottom of two angular positions of the front end of the body of the dump truck 100, and is not limited in particular.
The electric winching machine 3 is mounted on the hand-push dump truck 100, and the winding roller of the electric winching machine 3 is provided with a second connecting rope 31, and one end of the second connecting rope 31 is connected with the other end of each first connecting rope 2.
This application is this device based on the improved design of hand push tipper 100 with obtaining, not only can be fast accomplish to lift transport work, and utilizes hand push tipper 100 leverage and portable function in the completion process, and is also more laborsaving, convenient to use. Moreover, the cable cover 200 can be lifted by directly utilizing the lever action without using the electric grinder 3, and the use is flexible. But also benefits the moving function of the hand-push dump truck 100, so that the whole device is convenient to move and easy to transport and move. More importantly, the loading function of the hand-push dump truck 100 is still maintained, so that the device can be correctly used for transporting and carrying materials even though the device is not used for lifting and carrying the cable cover plate 200, the use is multifunctional, the applicability is better, one end of the second connecting rope 31 of the electric winching machine 3 can be connected to a fixed point of a transportation destination to provide power-assisted traction, and therefore the hand-push dump truck 100 is more labor-saving in moving, the efficiency of material transportation is further improved, and particularly the situation of uphill slope is dealt with. In addition, the design scheme has the advantages of simple structure, low manufacturing cost and good application prospect.
The above is a first embodiment of a cable-pulling cover plate device provided in the embodiments of the present application, and the following is a second embodiment of the cable-pulling cover plate device provided in the embodiments of the present application, please refer to fig. 1 to 2 specifically.
The scheme based on the first embodiment is as follows:
further, in the case of the cross-insertion type connection fitting, the length of the connecting rod 1 should be designed to be greater than the thickness of the cable cover 200 for the convenience of operation. Specifically, the other end of the connecting rod 1 can movably pass through the communication hole 201 of the cable cover 200, and the connecting portion 11 is of a rod structure and is vertically connected to the other end of the connecting rod 1. When the connecting rod 1 is connected and matched, the connecting part 11 is aligned with the length direction of the communication hole 201, the other end of the connecting rod 1 penetrates through the cable cover plate 200 through the communication hole 201, and then the connecting rod is rotated by a certain angle, for example, 90 degrees after penetrating, so that the connecting part 11 can be contacted with the bottom of the cable cover plate 200, and the cable cover plate 200 can be lifted when the connecting rod 1 is lifted. Of course, if the cable cover 200 does not have the communication hole 201, the connection portion 11 may be designed to have other connection structures, and it is sufficient to be able to be connected and matched with the cable cover 200, without limitation. The connecting portion 11 may be integrally connected with the connecting rod 1, and welded, and is not particularly limited.
Furthermore, in the above-mentioned insertion type connection matching design, in order to facilitate the rotation at a certain angle, one end of the connecting rod 1 is rotatably connected with one end of the first connecting rope 2. Specifically, one end of the first connecting rope 2 can be connected with a rotatable first lifting hook 21, one end of the first connecting rod 1 is provided with a first lifting ring 12 matched with the first lifting hook 21, the first connecting rope 2 and the connecting rod 1 can be conveniently detached and installed in the design, and when different cable cover plates 200 are applied, the connecting rod 1 with different connecting parts 11 can be replaced.
Further, one end of the second connection rope 31 is connected with a rotatable second hook 311, and one end of the first connection rope 2 is connected with a second hanging ring 22 matched with the second hook 311. Through the cooperation, the disassembly and the assembly are convenient, and the subsequent maintenance and the replacement are convenient.
Further, with the above-mentioned interlude formula connection cooperation, connecting rod 1 is equipped with screw rod section 13, and the cover is equipped with thread fit's thread bush 6 on screw rod section 13, and when connecting rod 1 and cable cover 200 are connected the cooperation, form the centre gripping to cable cover 200 between thread bush 6 and the connecting portion 11, can fix connecting portion 11 like this for connecting portion 11 can not remove, thereby improves and connects the complex stability. After the lifting and carrying work is finished, the threaded sleeve 6 can be unscrewed again, and then the connecting rod 1 is rotated to take out the connecting rod 1. Of course, the whole connecting rod 1 of the present application can be designed with threads without limitation.
Further, the installation layout of the electric grinder 3 may be installed on the outer front wall surface of the hand-push type dump truck 100, or installed on the outer bottom of the body of the hand-push type dump truck 100, or installed on the outer rear wall surface of the body of the hand-push type dump truck 100, or may be other positions, which is not limited in particular.
Further, for convenience of assembly, disassembly and maintenance, the electric grinder 3 may be detachably mounted on the hand-propelled dump truck 100, specifically, a corresponding mounting seat may be provided on the hand-propelled dump truck 100, and the electric grinder 3 may be detachably mounted on the mounting seat by a fastener such as a screw, which is not limited specifically.
Further, in order to make the traction of the first connection rope 2 smoother, a second pulley 42 may be further included, the second pulley 42 may be specifically installed on the outer front wall surface of the dump truck 100, and the other end of the first connection rope 2 may be further wound around the second pulley 42.
Further, at least two receiving pieces 5 corresponding to the connecting rods 1 one by one are further arranged at the bottom of the front end of the body of the hand-push dump truck 100, and each receiving piece 5 is provided with an elastic clamping groove 51 for the corresponding connecting rod 1 to be movably clamped in. The receiving member 5 may be made of plastic, and is fixed to the dump truck 100 by a corresponding connecting member or adhesively, the elastic engaging slot 51 may be provided for the connecting rod 1 to be engaged in along the radial direction, and an engaging opening of the engaging slot 51 may be disposed downward, which is not limited specifically. By means of the design, when the connecting assembly is not used, the connecting rod 1 can be accommodated, and interference of the connecting rod 1 when the device is used for material conveying is reduced.
While the above-mentioned embodiments of the present invention have been described in detail, it will be apparent to those skilled in the art that the present invention is not limited thereto.
Claims (10)
1. A cable pulling cover plate device is characterized by comprising a hand-push tipping wagon, an electric winching machine and a connecting component;
the connecting assembly comprises at least two connecting rods and at least two first connecting ropes;
the at least two connecting rods correspond to the first connecting ropes one to one, and one end of each connecting rod is connected with one end of the corresponding first connecting rope;
the other end of each connecting rod is provided with a connecting part which can be detachably connected with the cable cover plate;
at least two first pulleys which correspond to the first connecting ropes one to one are fixed at the front end of the body of the hand-push dump truck;
the other end of each first connecting rope is wound around the corresponding first pulley;
the electric winching machine is arranged on the hand-push dump truck, and a second connecting rope is arranged on a winding roller of the electric winching machine;
one end of the second connecting rope is connected with the other end of each first connecting rope.
2. A cable cover device according to claim 1, wherein the length of the connecting rod is greater than the thickness of the cable cover;
the other end of the connecting rod can movably penetrate through a communication hole in the cable cover plate;
the connecting part is of a rod structure and is vertically connected with the other end of the connecting rod.
3. A cable cover device according to claim 2, wherein one end of the connecting rod is rotatably connected to one end of the first connecting rope.
4. A cover-pulling device according to claim 3, wherein a first rotatable hook is connected to one end of the first connecting rope;
one end of the first connecting rod is provided with a first hanging ring matched with the first hanging hook.
5. A cable cover device according to claim 1, wherein a rotatable second hook is connected to one end of the second connecting rope;
one end of the first connecting rope is connected with a second lifting ring matched with the second lifting hook.
6. A cable cover device according to claim 1, wherein the connecting rod is provided with a threaded rod section;
the threaded rod section is sleeved with a threaded sleeve in threaded fit;
when the connecting rod is connected and matched with the cable cover plate, the threaded sleeve and the connecting part clamp the cable cover plate.
7. The cable cover pulling device according to claim 1, wherein the electric winch is mounted on the outer front wall surface of the hand-propelled dump truck, or on the outer bottom of the body of the hand-propelled dump truck, or on the outer rear wall surface of the body of the hand-propelled dump truck.
8. A cabled cover device according to claim 1, characterized in that the electric winch is detachably mounted to the hand-propelled dump truck.
9. A cable cover device according to claim 1, further comprising a second pulley;
the second pulley is arranged on the outer front wall surface of the hand-push tipping wagon;
the other end of the first connecting rope is wound around the second pulley.
10. The cable cover device according to claim 1, wherein the bottom of the front end of the body of the hand-propelled dump truck is further provided with two receiving members corresponding to the connecting rods one to one;
each accommodating part is provided with an elastic clamping groove for the movable clamping of the corresponding connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110901493.6A CN113603034A (en) | 2021-08-06 | 2021-08-06 | Cable pulling cover plate device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110901493.6A CN113603034A (en) | 2021-08-06 | 2021-08-06 | Cable pulling cover plate device |
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| Publication Number | Publication Date |
|---|---|
| CN113603034A true CN113603034A (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110901493.6A Pending CN113603034A (en) | 2021-08-06 | 2021-08-06 | Cable pulling cover plate device |
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| CN (1) | CN113603034A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1006126A4 (en) * | 1992-08-06 | 1994-05-17 | Jan Van Huet Transport B V | Dolly |
| WO2009141976A1 (en) * | 2008-05-22 | 2009-11-26 | 村田機械株式会社 | Overhead conveying vehicle |
| CN107650759A (en) * | 2017-10-25 | 2018-02-02 | 潍坊拓普机械制造有限公司 | A kind of multifunctional turnover trolley |
| CN207259040U (en) * | 2017-10-12 | 2018-04-20 | 国网甘肃省电力公司兰州供电公司 | A kind of power cable well lid handbarrow |
| CN209291839U (en) * | 2018-12-04 | 2019-08-23 | 陈彬 | A kind of power cable well lid handbarrow |
| CN210001501U (en) * | 2019-04-25 | 2020-01-31 | 点狮科技(浙江)有限公司 | kinds of intelligent sling |
| CN111017719A (en) * | 2019-10-15 | 2020-04-17 | 国网浙江嘉善县供电有限公司 | Cable cover plate safety lifting device |
| CN212220256U (en) * | 2020-05-04 | 2020-12-25 | 中铁建电气化局集团南方工程有限公司 | Shallow suitable for transportation of cable trench cover and installation |
| CN112681388A (en) * | 2021-01-11 | 2021-04-20 | 韦各各 | Integrated system is changed to municipal administration well lid |
-
2021
- 2021-08-06 CN CN202110901493.6A patent/CN113603034A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1006126A4 (en) * | 1992-08-06 | 1994-05-17 | Jan Van Huet Transport B V | Dolly |
| WO2009141976A1 (en) * | 2008-05-22 | 2009-11-26 | 村田機械株式会社 | Overhead conveying vehicle |
| CN207259040U (en) * | 2017-10-12 | 2018-04-20 | 国网甘肃省电力公司兰州供电公司 | A kind of power cable well lid handbarrow |
| CN107650759A (en) * | 2017-10-25 | 2018-02-02 | 潍坊拓普机械制造有限公司 | A kind of multifunctional turnover trolley |
| CN209291839U (en) * | 2018-12-04 | 2019-08-23 | 陈彬 | A kind of power cable well lid handbarrow |
| CN210001501U (en) * | 2019-04-25 | 2020-01-31 | 点狮科技(浙江)有限公司 | kinds of intelligent sling |
| CN111017719A (en) * | 2019-10-15 | 2020-04-17 | 国网浙江嘉善县供电有限公司 | Cable cover plate safety lifting device |
| CN212220256U (en) * | 2020-05-04 | 2020-12-25 | 中铁建电气化局集团南方工程有限公司 | Shallow suitable for transportation of cable trench cover and installation |
| CN112681388A (en) * | 2021-01-11 | 2021-04-20 | 韦各各 | Integrated system is changed to municipal administration well lid |
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Application publication date: 20211105 |