CN109132970A - A kind of electric power prospecting engineering earth anchor dismounting device - Google Patents
A kind of electric power prospecting engineering earth anchor dismounting device Download PDFInfo
- Publication number
- CN109132970A CN109132970A CN201810905763.9A CN201810905763A CN109132970A CN 109132970 A CN109132970 A CN 109132970A CN 201810905763 A CN201810905763 A CN 201810905763A CN 109132970 A CN109132970 A CN 109132970A
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- CN
- China
- Prior art keywords
- earth anchor
- fixed
- rack
- support
- electric power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- 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)
- Earth Drilling (AREA)
Abstract
The invention belongs to power constructions to assist field of mechanical technique, device is removed more particularly to a kind of electric power prospecting engineering earth anchor, including support component, linked component, transmission component and fixation kit, the support component includes rack and support slide fixed above, the bottom end quadrangle of the rack is respectively connected with castor, the linked component includes slide bar, connecting rod, support rod and earth anchor hook, inner wall of the sliding bar in the support slide；Device is equipped with linked component and transmission component, the promotion linked up with to earth anchor is realized by lever principle, biggish lifting pulling force can be provided, in addition transmission component passes through screw drive, it may be implemented to realize big axial tension by lesser turnover power, and then easily realize the pulling to the arm of force, while being equipped with adjustable fixed gullet plate and castor below rack, facilitate and carry out carrying movement, and fixed gullet plate can be adjusted in operation to make device fixing-stable.
Description
Technical field
The invention belongs to power constructions to assist field of mechanical technique, and in particular to a kind of electric power prospecting engineering is removed with earth anchor
Device.
Background technique
In the construction of line or restringing, temporary guy can be all used, the fixation of temporary guy, usually used is ground
Anchor, after engineering, removing earth anchor is a time-consuming and laborious job, and general operation personnel are with sledgehammer first by earth anchor or so
Strike, makes its loosening, is then pulled out with a hand together by two people.
Original manual demolition mode operation is not only time-consuming and laborious, thereby increases and it is possible to bring danger to operating personnel in the construction process
Danger, and the patent of existing Publication No. CN206645765U proposes one kind and there is pedestal to stablize, and passes through the side of jack operation
Case, but its installation weight is heavier inconvenient to carry and mobile.
Summary of the invention
The purpose of the present invention is to provide a kind of electric power prospecting engineering earth anchors to remove device, to solve above-mentioned background technique
It is middle to propose that original manual demolition mode operation is not only time-consuming and laborious, thereby increases and it is possible to danger is brought to operating personnel in the construction process,
And the patent of existing Publication No. CN206645765U propose it is a kind of there is pedestal to stablize, by the scheme of jack operation,
But the problem that its installation weight is heavier inconvenient to carry and mobile.
To achieve the above object, the invention provides the following technical scheme: a kind of electric power, which reconnoitres engineering, removes device with earth anchor,
Including support component, linked component, transmission component and fixation kit, the support component includes rack and the side of being fixed thereon
Support slide, the bottom end quadrangle of the rack is respectively connected with castor, the linked component include slide bar, connecting rod, support rod and
Earth anchor hook, the sliding bar is in the inner wall for supporting slide, and the slide bar extends to institute through the support slide
State the lower section of rack, the bottom end of the slide bar is connected with earth anchor hook, if the top of the slide bar is hinged with and is linearly distributed
The dry connecting rod, is connected between the connecting rod and the support slide by support rod, the bottom end of connecting rod passes through transmission component
It is mounted on the end face of rack, support component is connect by fixation kit with load surface.
Preferably, one end of the support rod is hinged on the connecting rod at the one third position of the slide bar, institute
The other end for stating support rod is hinged on the outer wall of the support slide.
Preferably, the bottom end of the slide bar has hook connector, has connecting plate, the earth anchor on the earth anchor hook
Hook is hinged by the connecting plate and the hook connector.
Preferably, the transmission component includes the rotating member for the side of being fixed on the rack and is connected to the connecting rod end
Screw rod sliding sleeve, the output end of the rotating member are connected with drive screw, the drive screw and the transmission connection of screw rod sliding sleeve.
Preferably, the rotating member includes motor, transmission swivel base and the transmission handwheel for being fixed on its outer wall, the motor
It is fixed on the top of the rack, the output end of the motor is fixed with the drive screw, the transmission swivel base rotation connection
In the top of the rack, and the transmission swivel base is fixedly arranged above the drive screw.
Preferably, the transmission component is pressure piston device, is connected between the piston pump of several piston apparatus, by uniting
One power device provides pressure, and piston includes pneumaticpiston and hydraulic piston.
Preferably, the fixation kit includes fixation handwheel, adjustment screw and the fixation positioned at the castor inside front
Gullet plate, the fixed handwheel are rotatablely connected by adjusting screw rod and the fixed gullet plate, and the adjustment screw is through described
Rack is simultaneously sequentially connected with it；The outer wall of the fixed handwheel is arranged there are two symmetrical extension bar, outside the extension bar
Wall is arranged rubber sleeve, and the end of the extension bar has anti-skid ball.
Preferably, the shape of the transmission handwheel is identical as the shape of the fixed handwheel, the diameter of the transmission handwheel
It is twice of the fixed handwheel diameter.
Preferably, the top of the slide bar has connecting rod attachment base, and the connecting rod and the connecting rod attachment base pass through fixation
Part is hinged, and the fixing piece can be pin shaft, bolt and pin.
Preferably, the fixed gullet plate is rubber material, and the bottom of the fixed gullet plate has metal tooth plate, described
Metal tooth plate has flexibility.
Compared with prior art, the beneficial effects of the present invention are: device is equipped with linked component and transmission component, pass through thick stick
Rod principle realizes the promotion linked up with to earth anchor, can undertake biggish lifting pulling force in the case where proof strength, in addition be driven
Component may be implemented to realize big axial tension by lesser turnover power, and then easily realize to power by screw drive
The pulling of arm is driven by pressure piston device, is connected between the piston pump of several piston apparatus, by unified power device
Pressure is provided, synchronous raising and lowering can be effectively ensured, while being equipped with adjustable fixed gullet plate and castor below rack,
Facilitate and carry out carrying movement, and fixed gullet plate can be adjusted in operation to make device fixing-stable, improves the safety of operation
And high efficiency.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is rack construction schematic diagram of the invention；
Fig. 3 is fixation hand wheel structure schematic diagram of the invention；
Fig. 4 is the structural schematic diagram of two driving member of the embodiment of the present invention；
In figure: 10, support component；11, rack；12, slide is supported；13, castor；20, linked component；21, slide bar；211, connecting rod
Attachment base；212, connector is linked up with；22, connecting rod；23, support rod；24, earth anchor is linked up with；30, transmission component；31, rotating member；
311b, transmission handwheel；312b, transmission swivel base；32, drive screw；33, screw rod sliding sleeve；40, fixation kit；41, fixed handwheel；
411, extension bar；42, adjustment screw；43, fixed gullet plate.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1:
Fig. 1-3 is please referred to, the present invention provides a kind of technical solution: a kind of electric power prospecting engineering earth anchor dismounting device, including branch
Support component 10, linked component 20, transmission component 30 and fixation kit 40, support component 10 include rack 11 and are fixed thereon
The support slide 12 of side, the bottom end quadrangle of rack 11 are respectively connected with castor 13, and linked component 20 includes slide bar 21, connecting rod 22, branch
Strut 23 and earth anchor hook 24, the sliding of slide bar 21 is in the inner wall for supporting slide 12, and slide bar 21 is extended to through support slide 12
The lower section of rack 11, the bottom end of slide bar 21 be connected with earth anchor hook 24, the top of slide bar 21 be hinged with linearly be distributed it is several
A connecting rod 22 is connected between connecting rod 22 and support slide 12 by support rod 23, and the bottom end of connecting rod 22 is pacified by transmission component 30
On the end face of rack 11, support component 10 is connect by fixation kit 40 with load surface.
Further, one end of support rod 23 is hinged on connecting rod 22 at the one third position of slide bar 21, support rod
23 other end is hinged on the outer wall of support slide 12.
In the present embodiment, one end of support rod 23 is hinged on connecting rod 22 at the one third position of slide bar 21, support
The other end of bar 23 is hinged on the outer wall of support slide 12, can form laborsaving lever, has longer force arm, according to earth anchor
Fixed characteristic, resistance can decline moment after earth anchor loosens, therefore being lifted small height using the biggish arm of force can be by earth anchor
It pulls out.
Further, the bottom end of slide bar 21 has hook connector 212, has connecting plate on earth anchor hook 24, and earth anchor is hung
Hook 24 is hinged by connecting plate and hook connector 212.
In the present embodiment, the bottom end of slide bar 21 has hook connector 212, has connecting plate, earth anchor on earth anchor hook 24
Hook 24 is hinged by connecting plate and hook connector 212, and rotation earth anchor hook 24 is facilitated to be hung on the hook of earth anchor.
Further, transmission component 30 includes being fixed on the rotating member 31 of 11 top of rack and being connected to 22 end of connecting rod
Screw rod sliding sleeve 33, the output end of rotating member 31 is connected with drive screw 32, and drive screw 32 and screw rod sliding sleeve 33 are sequentially connected.
In the present embodiment, drive screw 32 is driven to rotate by rotating member 31, the change of axial length occurs for screw rod sliding sleeve 33
Change, and then controls the raising and lowering of the force of connecting rod 22 one end.
Further, rotating member 31 includes motor, is driven swivel base 312b and is fixed on the transmission handwheel 311b of its outer wall,
Motor is fixed on the top of rack 11, and the output end of motor is fixed with drive screw 32, and transmission swivel base 312b is rotatably connected on machine
The top of frame 11, and be driven swivel base 312b and be fixedly arranged above drive screw 32.
In the present embodiment, rotating member 31 includes motor, transmission swivel base 312b and the transmission handwheel for being fixed on its outer wall
311b, motor are fixed on the top of rack 11, and the output end of motor is fixed with drive screw 32, transmission swivel base 312b rotation connection
In the top of rack 11, and be driven swivel base 312b is fixedly arranged above drive screw 32, facilitates the use for realizing two states, root
According to condition, passes through motor if power supply unit abundance and drive screw 32 is driven, if power supply unit is insufficient, condition is poor,
Then drive screw 32 is driven to be driven using transmission handwheel 311b rotation.
Further, fixation kit 40 includes the fixation handwheel 41 positioned at 13 inside front of castor, adjustment screw 42 and consolidates
Determine gullet plate 43, fixed handwheel 41 is rotatablely connected by adjusting screw rod 42 and fixed gullet plate 43, and adjustment screw 42 runs through rack
It 11 and is sequentially connected with it；The outer wall of fixed handwheel 41 is arranged that there are two symmetrical extension bar 411,411 outer walls of extension bar
It is arranged rubber sleeve, the end of extension bar 411 has anti-skid ball.
In the present embodiment, fixation kit 40 includes fixation handwheel 41,42 and of adjustment screw positioned at 13 inside front of castor
Fixed gullet plate 43, fixed handwheel 41 are rotatablely connected by adjusting screw rod 42 and fixed gullet plate 43, and adjustment screw 42 runs through machine
Frame 11 is simultaneously sequentially connected with it；Then rotating fixed handwheel 41 by extension bar 411 drives adjustment screw 42 enterprising in rack 11
The axial transmission of row adjusts the height condition of fixed gullet plate 43, and fixed gullet plate 43 is made to prop up castor 13, then adjust four it is solid
The height for determining gullet plate 43 makes device keep stablizing, and the outer wall of fixed handwheel 41 is arranged that there are two symmetrical extension bars
411,411 outer wall of extension bar is arranged rubber sleeve, and the end of extension bar 411 has anti-skid ball, convenient for users to rotating fixed hand
Wheel 41 is adjusted the height of fixed gullet plate 43.
Further, the shape for being driven handwheel 311b is identical as the fixed shape of handwheel 41, is driven the diameter of handwheel 311b
It is twice of fixed 41 diameter of handwheel.
In the present embodiment, the shape for being driven handwheel 311b is identical as the fixed shape of handwheel 41, and transmission handwheel 311b's is straight
Diameter is twice of fixed 41 diameter of handwheel, increases the arm of force of force, the operation of convenient working personnel is more laborsaving.
Further, the top of slide bar 21 has connecting rod attachment base 211, and connecting rod 22 and connecting rod attachment base 211 pass through fixation
Part is hinged, and fixing piece can be pin shaft, bolt and pin.
In the present embodiment, it is solid that there is connecting rod attachment base 211, connecting rod 22 and connecting rod attachment base 211 to pass through on the top of slide bar 21
It is hinged to determine part, fixing piece can be pin shaft, bolt and pin, facilitate hinged between realization connecting rod 22 and connecting rod attachment base 211
Connection, and guarantee the reliability of connection, it is also easy to be dismantled and be repaired.
Further, fixed gullet plate 43 is rubber material, and the bottom of fixed gullet plate 43 has metal tooth plate, metal-toothed
Plate has flexibility.
In the present embodiment, fixed gullet plate 43 is rubber material, and the bottom of fixed gullet plate 43 has metal tooth plate, metal
Tooth plate has flexibility, is adapted to concave-convex bottom surface situation, and the height by adjusting four fixed gullet plates 43 protects device
Maintain an equal level steady.
Embodiment 2:
Referring to Fig. 4, the present invention provides a kind of technical solution: when in use, passing through 13 mobile device of castor of 11 bottom of rack
It to earth anchorage place, then adjusts and hangs over earth anchor hook 24 on the shackle of earth anchor, then fixed by the rotation of extension bar 411
Handwheel 41 drives adjustment screw 42 to carry out axial transmission in rack 11, adjusts the height condition of fixed gullet plate 43, makes solid
Determine gullet plate 43 and prop up castor 13, then adjust the height of four fixed gullet plates 43, makes device keep stablizing, then rotation transmission
Handwheel 311b makes to be driven swivel base 312b rotation, and then drive screw 32 is driven to rotate, and the change of axial length occurs for screw rod sliding sleeve 33
Change, and then control the decline of the force of connecting rod 22 one end, is connected by the connecting rod that support rod 23 connects connecting rod 22 as fulcrum
Seat 211 is lifted, and slide bar 21 links up with connector 212 and earth anchor hook 24 is driven to pull earth anchor lift in the inner wall sliding of support slide 12
It rises, so that earth anchor hook 24 be pulled out.
Embodiment 3:
Further, transmission component 30 is pressure piston device, is connected between the piston pump of several piston apparatus, by unification
Power device provides pressure, and piston includes pneumaticpiston and hydraulic piston.
It in the present embodiment, is driven by pressure piston device, is connected between the piston pump of several piston apparatus, by unified
Power device provide pressure, synchronous raising and lowering can be effectively ensured.
The present invention provides a kind of technical solution: when in use, passing through 13 mobile device of castor of 11 bottom of rack to earth anchor
Then fixed location adjusts and hangs over earth anchor hook 24 on the shackle of earth anchor, then rotate fixed handwheel 41 by extension bar 411
It drives adjustment screw 42 to carry out axial transmission in rack 11, adjusts the height condition of fixed gullet plate 43, make fixed sawtooth
Plate 43 props up castor 13, then adjusts the height of four fixed gullet plates 43, makes device keep stablizing, is passed by pressure piston device
It is dynamic, it is connected between the piston pump of several piston apparatus, provides pressure by unified power device, synchronous rising can be effectively ensured
And decline, and then the synchronous decline of the force of connecting rod 22 one end is controlled, connecting rod 22 is connected as fulcrum by support rod 23
Connecting rod attachment base 211 is lifted, and slide bar 21 links up with connector 212 and earth anchor hook 24 is driven to draw in the inner wall sliding of support slide 12
Dynamic earth anchor lifting, so that earth anchor hook 24 be pulled out.
The working principle of the invention and process for using: after the present invention installs, when in use, pass through 11 bottom of rack
Then 13 mobile device of castor adjusts to earth anchorage place and hangs over earth anchor hook 24 on the shackle of earth anchor, then by adding
Stock 411 rotates fixed handwheel 41 and adjustment screw 42 is driven to carry out axial transmission in rack 11, adjusts fixed gullet plate 43
Height condition, so that fixed gullet plate 43 is propped up castor 13, then adjust the height of four fixed gullet plates 43, keep device surely
It is fixed, then drive drive screw 32 to rotate by 31 motor of rotating member, the variation of axial length occurs for screw rod sliding sleeve 33, and then controls
The decline for having made the force of connecting rod 22 one end is lifted by the connecting rod attachment base 211 that support rod 23 connects connecting rod 22 as fulcrum,
Slide bar 21 is in the inner wall sliding of support slide 12, and hook connector 212 drives earth anchor hook 24 to pull earth anchor lifting, thus by ground
Anchor hook 24 pulls out.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of electric power prospecting engineering removes device with earth anchor, it is characterised in that: including support component (10), linked component
(20), transmission component (30) and fixation kit (40), the support component (10) include rack (11) and the side of being fixed thereon
Support slide (12), the bottom end quadrangle of the rack (11) is respectively connected with castor (13), and the linked component (20) includes sliding
Bar (21), connecting rod (22), support rod (23) and earth anchor hook (24), slide bar (21) sliding is in support slide (12)
Inner wall, and the slide bar (21) extends to the lower section of the rack (11), the slide bar (21) through support slide (12)
Bottom end be connected with earth anchor hook (24), the top of the slide bar (21) is hinged with several the described connecting rods being linearly distributed
(22), it is connected between the connecting rod (22) and the support slide (12) by support rod (23), the bottom end of connecting rod (22) passes through
Transmission component (30) is mounted on the end face of rack (11), and support component (10) is connect by fixation kit (40) with load surface.
2. a kind of electric power prospecting engineering according to claim 1 removes device with earth anchor, it is characterised in that: the support rod
(23) one end is hinged on the connecting rod (22) at the one third position of the slide bar (21), the support rod (23)
The other end is hinged on the outer wall of support slide (12).
3. a kind of electric power prospecting engineering according to claim 1 removes device with earth anchor, it is characterised in that: the slide bar
(21) bottom end has hook connector (212), has connecting plate on the earth anchor hook (24), and the earth anchor hook (24) is logical
It crosses the connecting plate and the hook connector (212) is hinged.
4. a kind of electric power prospecting engineering according to claim 1 removes device with earth anchor, it is characterised in that: the transmission group
Part (30) is including being fixed on the rotating member (31) above rack (11) and being connected to the screw rod sliding sleeve of the connecting rod (22) end
(33), the output end of the rotating member (31) is connected with drive screw (32), the drive screw (32) and screw rod sliding sleeve (33)
Transmission connection.
5. a kind of electric power prospecting engineering according to claim 4 removes device with earth anchor, it is characterised in that: the rotating member
It (31) include motor, transmission swivel base (312b) and the transmission handwheel (311b) for being fixed on its outer wall, the motor is fixed on institute
The top of rack (11) is stated, the output end of the motor is fixed with the drive screw (32), and the transmission swivel base (312b) turns
The dynamic top for being connected to the rack (11), and transmission swivel base (312b) is fixedly arranged above the drive screw (32).
6. a kind of electric power prospecting engineering according to claim 1 removes device with earth anchor, it is characterised in that: the transmission group
Part (30) is pressure piston device, is connected between the piston pump of several piston apparatus, provides pressure by unified power device,
Piston includes pneumaticpiston and hydraulic piston.
7. a kind of electric power prospecting engineering according to claim 5 removes device with earth anchor, it is characterised in that: described fixed group
Part (40) includes the fixation handwheel (41) positioned at the castor (13) inside front, adjustment screw (42) and fixed gullet plate
(43), the fixed handwheel (41) is rotatablely connected by adjusting screw rod (42) and the fixed gullet plate (43), the adjustment spiral shell
Bar (42) is sequentially connected through the rack (11) and with it；The outer wall of the fixed handwheel (41) is arranged there are two symmetrical
Extension bar (411), extension bar (411) outer wall is arranged rubber sleeve, and the end of the extension bar (411) has anti-skidding
Ball.
8. a kind of electric power prospecting engineering according to claim 7 removes device with earth anchor, it is characterised in that: the transmission hand
The shape for taking turns (311b) is identical as the shape of the fixed handwheel (41), and the diameter of transmission handwheel (311b) is the fixation
Twice of handwheel (41) diameter.
9. a kind of electric power prospecting engineering according to claim 1 removes device with earth anchor, it is characterised in that: the slide bar
(21) top has connecting rod attachment base (211), and the connecting rod (22) and the connecting rod attachment base (211) are cut with scissors by fixing piece
It connects, the fixing piece can be pin shaft, bolt and pin.
10. a kind of electric power prospecting engineering according to claim 1 removes device with earth anchor, it is characterised in that: the fixation
Gullet plate (43) is rubber material, and the bottom of the fixed gullet plate (43) has metal tooth plate, and the metal tooth plate has soft
Toughness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810905763.9A CN109132970A (en) | 2018-08-10 | 2018-08-10 | A kind of electric power prospecting engineering earth anchor dismounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810905763.9A CN109132970A (en) | 2018-08-10 | 2018-08-10 | A kind of electric power prospecting engineering earth anchor dismounting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109132970A true CN109132970A (en) | 2019-01-04 |
Family
ID=64792509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810905763.9A Pending CN109132970A (en) | 2018-08-10 | 2018-08-10 | A kind of electric power prospecting engineering earth anchor dismounting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109132970A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252082A (en) * | 2011-06-29 | 2011-11-23 | 吴江市大业丝绸整理有限公司 | Lifting regulation device |
| KR200470567Y1 (en) * | 2013-05-01 | 2013-12-26 | 서울특별시 | Opener for manhole cover |
| CN204581802U (en) * | 2015-04-27 | 2015-08-26 | 康慧思 | A kind of adjustable for height lower limb body position pad |
| CN106365084A (en) * | 2016-11-25 | 2017-02-01 | 国网山东省电力公司潍坊供电公司 | Electric power cellar well cover plate switch device suitable for batch switch operation |
| CN207259110U (en) * | 2017-09-15 | 2018-04-20 | 张文宇 | A kind of inspection well cover opening device |
-
2018
- 2018-08-10 CN CN201810905763.9A patent/CN109132970A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252082A (en) * | 2011-06-29 | 2011-11-23 | 吴江市大业丝绸整理有限公司 | Lifting regulation device |
| KR200470567Y1 (en) * | 2013-05-01 | 2013-12-26 | 서울특별시 | Opener for manhole cover |
| CN204581802U (en) * | 2015-04-27 | 2015-08-26 | 康慧思 | A kind of adjustable for height lower limb body position pad |
| CN106365084A (en) * | 2016-11-25 | 2017-02-01 | 国网山东省电力公司潍坊供电公司 | Electric power cellar well cover plate switch device suitable for batch switch operation |
| CN207259110U (en) * | 2017-09-15 | 2018-04-20 | 张文宇 | A kind of inspection well cover opening device |
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Application publication date: 20190104 |
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| RJ01 | Rejection of invention patent application after publication |