CN206580469U - Hoisting device for concrete sedimentation basin - Google Patents
Hoisting device for concrete sedimentation basin Download PDFInfo
- Publication number
- CN206580469U CN206580469U CN201720275670.3U CN201720275670U CN206580469U CN 206580469 U CN206580469 U CN 206580469U CN 201720275670 U CN201720275670 U CN 201720275670U CN 206580469 U CN206580469 U CN 206580469U
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- CN
- China
- Prior art keywords
- location
- positioning disk
- fixed
- sedimentation basin
- fixing axle
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Abstract
A kind of hoisting device for concrete sedimentation basin is disclosed in the utility model, hoist combination in the hoisting device turns to the moment of specified lowered position, handwheel on rotary motion handle, hand wheel rotating drives the screw rod rotation being connected on handwheel, screw rod rotation drives location-plate movement until in the locating slot of positioning disk, simultaneously, pull out the block of location-plate end, block is placed in the buckling groove of positioning disk by rotary block, now, location-plate realizes fixation on positioning disk, the crane sling on chain sling swings back and forth in specified lowered position, until crane stop motion, crane is transferred to specified location.
Description
Technical field
The utility model is related to hoisting device, more particularly to a kind of hoisting device for sedimentation basin.
Background technology
Concrete batching and mixing tower completes once to prepare afterwards, it is necessary to rush the concrete of concrete batching and mixing tower internal residual
Wash, the inner wall cleaning of concrete batching and mixing tower is clean, containing wastes such as substantial amounts of mud, blindings in the waste water after flushing, reach
Less than discharge standard, it is impossible to which directly discharge is settled in sedimentation basin, it is necessary to the waste water after flushing is introduced into sedimentation basin.
Waste water by sedimentation can be reused by processing, and residue is deposited in sedimentation basin bottom.Accumulate to certain and sink when residue
, it is necessary to periodically clear up sedimentation basin bottom during accumulated amount.
The method that the cleaning work of sedimentation basin bottom uses manual cleaning, is manually concentrated to precipitation by sedimentation basin bottom sediment
Pond specified location, the sediment in sedimentation basin is hung out after sedimentation basin and carry out dismounting cleaning using crane.Application No.
A kind of lift is disclosed in 201320384393.8 patent document, lift can carry out Vertical Square to crane in its scheme
To lifting, lift heavy support can also be made to carry out fixed-axis rotation under external force so that crane realize horizontal direction turn
It is dynamic.But when lift heavy support is rotated to specified lowered position, crane in rotation process because crane quality is larger, in inertia
It may proceed to rotate under effect, crane, which rotates traction lift heavy support, to be continued to move until crane stop motion, now, crane is with specifying
Lowered position stagger.
Utility model content
The purpose of this utility model is a kind of hoisting device for concrete sedimentation basin of offer, and it is by slinging dress
The runner assembly position put sets the mechanism for preventing runner assembly from being rotated further under external force, and lift heavy support can be made to hang oneself
The crane risen is transferred to specified location.
Above-mentioned technical purpose of the present utility model technical scheme is that：It is a kind of heavy for concrete
The hoisting device in shallow lake pond, including the fixing axle being perpendicularly fixed on support frame, and rotate the driving wheel being socketed in fixing axle
With the positioning component being fixed in fixing axle, the positioning component includes being fixedly installed on the fixing axle and fixing axle axis weight
The positioning disk of conjunction, it is thick no more than positioning disk that surface of the positioning disk away from driven pulley side offers depth around positioning disk axle center
The locating slot of degree, the driving wheel, which is located in the plane held greatly to be provided with, to be rotated around fixing axle and is more than to fixing axle axial line distance
The swing handle of positioning disk radius, the one end of the swing handle away from driven pulley is slidably connected and width is less than the locating slot
The location-plate of width.
By using above-mentioned technical proposal, crane is turned to be positioned on the moment of specified lowered position, regulation swing handle
The position of plate, makes location-plate engaging and in the locating slot of positioning disk, it is solid that the locating slot on positioning disk prevents swing handle from continuing around
Fixed-axis rotation, so as to prevent the rotation of driving wheel.Driving wheel is fixed the lowered position for specifying crane and swung back and forth, until crane
Stop at the lowered position specified.
It is preferred that, the steel pole of more than two is fixedly installed along the length direction of swing handle inside the swing handle,
And parallel to the screw rod that the steel pole is set in the swing handle inner rotation, the location-plate is offered along the steel pole
The pilot hole of slip, and along the screwed hole of the screw motion, the screw rod is fixedly installed beyond the part of swing handle
The handwheel for driving screw rod to rotate.
By using above-mentioned technical proposal, rotation hand wheel, handwheel drives screw rod in swing handle inner rotation.Due to positioning
Plate is rotatably arranged on screw rod, and screw rod is rotated, and drives location-plate to rotate, but be located in the steel pole on location-plate and prevent positioning
Plate makes location-plate to realize and moved along the direction of swing handle around the rotation in screw rod direction.Steel pole quantity is more, prevents positioning
The ability that plate is rotated is stronger.
It is preferred that, the one end of the location-plate away from swing handle is offered to be fixed with inside spring groove, the spring groove
Back-moving spring in compressive state, the other end of the back-moving spring, which is hinged, is provided with screens bar, the screens bar it is another
The cross-sectional area that end is fixed with diameter is more than the block of spring groove cross-sectional area, and the positioning disk edge is located at the locating slot
Position radially open up buckling groove along positioning disk, one side of the buckling groove is hinged the gear for fastening and having length to be more than clamping well width
Plate.
By using above-mentioned technical proposal, when location-plate is sticked in locating slot, because location-plate is in swing handle
Certain warpage occurs for side stress, meeting of the location-plate away from swing handle side, by block after positioning Board position is extracted out, rotation
Turning block makes block be positioned in the buckling groove on positioning disk, and the baffle plate fastened on buckling groove makes block be fixed on positioning disk,
Side of the location-plate away from swing handle, which is realized, to be fixed.
It is preferred that, baffle plate is located on the outside of the baffle plate torsion spring for fastening baffle plate is provided with the position that buckling groove is hinged.
By using above-mentioned technical proposal, baffle plate by external force when not acted on, and baffle plate is fastened on clamping under torsion spring effect
The opposite side of groove.When needing that fixed plate is fixed, flap shutter when block is positioned in buckling groove, unclamps baffle plate, baffle plate
The automatic buckling in the presence of torsion spring, convenient operation.
It is preferred that, fixed cover in the sleeve pipe around support frame fixed-axis rotation, described sleeve pipe is socketed with support frame as described above and is connected to
The driven pulley rotated with the driving wheel, the driving wheel is bevel gear.
By using above-mentioned technical proposal, driving wheel is bevel gear, and the driven pulley being meshed with driving wheel is also bevel gear,
Bevel Gear Transmission has bearing capacity strong and the characteristics of stable transmission, meanwhile, be mutually perpendicular to the bevel gear of engagement realize it is vertical
The rotation being converted on horizontal plane faced directly, driving wheel, which is rotated, drives driven pulley to rotate, so as to drive solid on driven pulley
Fixed sleeve pipe is rotated around support frame, and the hoist combination concomitant rotation being fixed on sleeve pipe realizes the change of rotation direction.
It is preferred that, the spacing ring close to support frame side is respectively fixed with the fixing axle of the driving wheel both sides, and
Locating ring away from support frame side.
By using above-mentioned technical proposal, driving wheel can be moved in rotation process in fixing axle, it is impossible to be accurately positioned
The position of driving wheel makes the gear teeth of driving wheel and the gear teeth of driven pulley stagger.The positioning of spacing ring makes driving wheel in rotation process
It can only contradict to spacing ring surface, it is impossible to continue towards the motion of support frame direction, the positioning of locating ring prevents driving wheel towards far
Direction from support frame is moved, so that driving wheel is in rotation process, driving wheel can only be rotated between spacing ring and locating ring.
It is preferred that, insertion in keyway, the keyway is radially offered on the locating ring internal diameter and is engaged with keyway size
Wedge key.
By using above-mentioned technical proposal, position of the regulation locating ring in fixing axle, when the surface of retainer ring is fitted in
During active wheel surface, wedge key is inserted into the keyway of locating ring, makes to be fitted close between locating ring and fixing axle, locating ring positioning
In fixing axle, the cooperation between convenient regulation driving wheel and the driven pulley gear teeth.
In summary, the utility model has the advantages that：When hoist combination turns to the wink of specified lowered position
Between, the handwheel on rotary motion handle, hand wheel rotating drives the screw rod rotation being connected on handwheel, and screw rod rotation drives location-plate
It is mobile until in the locating slot of positioning disk, meanwhile, pull out the block of location-plate end, block is placed on positioning disk by rotary block
Buckling groove in, now, location-plate realizes the crane sling on fixation, chain sling in specified lowered position on positioning disk
Swing back and forth, until crane stop motion, decentralization crane to specified location.
Brief description of the drawings
Fig. 1 is the topology view of the hoisting device for concrete sedimentation basin；
Fig. 2 is the topology view of elevator component and hoist combination in display hoisting device；
Fig. 3 is display runner assembly and the exploded perspective view of positioning component structure；
Fig. 4 is display locating slot and the topology view of location-plate clamping relation；
Fig. 5 is the schematic diagram of display location-plate internal structure；
In figure, 1, support frame；2nd, runner assembly；21st, pallet；22nd, rotating disk；23rd, sleeve pipe；24th, driven pulley；25th, fixing axle；
26th, spacing ring；27th, driving wheel；28th, locating ring；281st, wedge key；29th, swing handle；291st, guide groove；292nd, steel pole；293rd, spiral shell
Bar；294th, handwheel；3rd, positioning component；31st, positioning disk；32nd, buckling groove；33rd, locating slot；34th, baffle plate；35th, torsion spring；36th, position
Plate；361st, pilot hole；362nd, screwed hole；363rd, spring groove；4th, latch assembly；41st, back-moving spring；42nd, screens bar；43rd, block；
44th, breach；5th, hoist combination；51st, lift heavy support；52nd, fixed pulley；53rd, bracing piece；6th, elevator component；61st, hoist engine；611、
Reel；612nd, steel wire rope；62nd, motor.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment 1
A kind of hoisting device for concrete sedimentation basin, as shown in figure 1, specifying rubbish including being arranged at sedimentation basin edge
The support frame 1 of zone position is collected, the top of support frame 1 is provided with hoist combination 5, support frame 1 and set towards the direction of hoist combination 5
Elevator component 6 is equipped with, elevator component 6 drives the crane being placed on inside sedimentation basin to carry out slinging operation, and the lower section of elevator component 6 is set
Runner assembly 2 is equipped with, the crane sling in sedimentation basin by elevator component 6 is carried out rotating operation by runner assembly 2.Corresponding to rotation
Positioning component 3 is provided with the support frame 1 of component 2, when the crane sling turns to specified decentralization in the presence of runner assembly 2
During position, positioning component 3 makes runner assembly 2 be fixed around the fixed-axis rotation of support frame 1.
With reference to Fig. 2, support frame 1 is perpendicularly fixed at sedimentation basin edge, and runner assembly 2 is rotated and is socketed on support frame 1.Rotate
Component 2 includes the sleeve pipe 23 with the hanging of support frame 1, and sleeve pipe 23 is socketed on support frame 1 and sleeve pipe 23 is around the dead axle of support frame 1
Rotate.Hoist combination 5 is located at the top of sleeve pipe 23, and hoist combination 5 includes perpendicular to sleeve pipe 23 and is fixedly welded on sleeve pipe 23
Lift heavy support 51, one end revolving support of the lift heavy support 51 away from sleeve pipe 23 has fixed pulley 52, and the lower section of fixed pulley 52, which is placed, to be equipped with
The crane of sediment, the crane that elevator component 6 will be equipped with sediment by fixed pulley 52 is sling.Welded between lift heavy support 51 and sleeve pipe 23
Connect and be fixed with bracing piece 53, bracing piece 53 forms triangle rock-steady structure with lift heavy support 51 and the three of sleeve pipe 23, and increase is hung
The stability of crane is sling at weight support 51.
Elevator component 6 is fixed on sleeve pipe 23 close to the position of driven pulley 24, and elevator component 6 includes realizing crane lift action
Hoist engine 61 and driving hoist engine 61 rotate motor 62.Hoist engine 61 includes reel 611, and the rotating shaft of reel 611 passes through
Belt is connected in the rotating shaft of motor 62, and the surface wrap of reel 611 is provided with steel wire rope 612, and one end of steel wire rope 612 is fixed on
On reel 611, the other end of steel wire rope 612 is connected through fixed pulley 52 with crane.Motor 62 is opened, motor 62 drives hoist engine
61 reel 611 is rotated, and reel 611 rotates and tightens up or loosen steel wire rope 612, so as to drive the crane being connected with steel wire rope 612
Realize elevating movement.
With reference to Fig. 2, runner assembly 2 includes pallet 21, and pallet 21 is fixedly welded on support frame 1, and the top of pallet 21 is set
There is the rotating disk 22 equal sized with pallet 21, rotating disk 22 is rotated and is socketed on support frame 1, lower surface and the pallet 21 of rotating disk 22
Upper surface is inconsistent, rotating disk 22 around the System of Rotating about Fixed Axis of support frame 1, meanwhile, sleeve pipe 23 is fixed on away from lift heavy in the upper surface of rotating disk 22
One end of component 5.
With reference to Fig. 3, the top of rotating disk 22 is socketed with driven pulley 24, and driven pulley 24 is bevel gear, the small end direction of driven pulley 24
The direction of pallet 22, the root diameter of driven pulley 24 is equal with the diameter of rotating disk 22, while the small end of driven pulley 24 and rotating disk 22
Upper surface be welded and fixed.The downward vertical of pallet 21 is welded with fixing axle 25 in support frame 1, and fixing axle 25 faces away from sinking
The side in shallow lake pond.Fixing axle 25 is wholely set restraining position ring block 26 close to the direction of support frame 1, and spacing ring 26 deviates from support frame 1 one
Rotated in the fixing axle 25 of side and be socketed with driving wheel 27, driving wheel 27 is similarly bevel gear, the gear teeth and driven pulley of driving wheel 27
24 gear teeth intermeshing, driving wheel 27, which is rotated, drives driven pulley 24 to rotate.Driving wheel 27 deviates from the fixation of the side of spacing ring 26
It is socketed with axle 25 on the locating ring 28 with keyway, locating ring 28 and is embedded with wedge key 281, the size and locating ring of wedge key 281
The size of keyway matches on 28, and distance of the regulation locating ring 28 in fixing axle 25 makes the gear teeth and driven pulley 24 of driving wheel 27
The gear teeth cooperate, in the keyway that wedge key 281 is fixed on to locating ring 28, locating ring 28 is axially fixed in fixing axle 25.
With reference to Fig. 1 and Fig. 3, swing handle 29, rotary motion handle 29, active are provided with the plane that driving wheel 27 is held greatly
Wheel 27 drives driven pulley 24 to rotate around the fixed-axis rotation of fixing axle 25, driving wheel 27, and driven pulley 24, which is rotated, drives 5 turns of hoist combination
It is dynamic.
With reference to Fig. 3 and Fig. 4, positioning component 3 is located at locating ring 28 in the fixing axle 25 of the side of driving wheel 27, positioning group
Part 3 includes positioning disk 31, and positioning disk 31 is fixed in fixing axle 25 radius of positioning disk 31 simultaneously and is less than swing handle 29 to admittedly
The size in the axle center of dead axle 25, allows swing handle 29 to be rotated around fixing axle 25.The edge ring of positioning disk 31 is around the axle of positioning disk 31
The heart offers the buckling groove 32 that quantity is even number.Surface of the positioning disk 31 away from the side of driven pulley 24 and it is symmetrical with the axle of positioning disk 31
Locating slot 33 is offered between two buckling grooves 32 of the heart, the depth of locating slot 33 is no more than the thickness of positioning disk 31.
The side of buckling groove 32, which is hinged, is provided with baffle plate 34, and baffle plate 34 is located at buckling groove 32 and the intersection location of locating slot 33
Outside, while the length of baffle plate 34 is more than width of the buckling groove 32 at the edge of positioning disk 31, baffle plate 34 is in its articulated position in fixed
Position is provided with torsion spring 35 between the edge of disk 31, and baffle plate 34 makes baffle plate 34 towards the opposite side of locating slot 33 in the presence of torsion spring 35
Fasten.
With reference to Fig. 4 and Fig. 5, one end of the remotely located disk 31 of swing handle 29 is provided with location-plate 36, the width of location-plate 36
Degree is slightly longer than the diameter of positioning disk 31 less than the length of the width of locating slot 33 and location-plate 36.Swing handle 29 is towards positioning disk 31
Direction offer inside guide groove 291, guide groove 291 and to be fixedly installed three steel poles along the length direction of swing handle 29
292, corresponding, the end of location-plate 36 offers three pilot holes 361, and steel pole 292 slides location-plate 36 through pilot hole 361
It is dynamic to be socketed on steel pole 292.Meanwhile, the screw rod 293 parallel to steel pole 292, the revolution branch of screw rod 293 are provided with guide groove 291
Support offers screwed hole 362 inside guide groove 291 on corresponding location-plate 36, screw rod 293 passes through the screw thread on location-plate 36
Hole 362 makes location-plate 36 be driven on screw rod 293.The side wall of swing handle 29, spiral shell are stretched out in one end of the remotely located disk 31 of screw rod 293
One end that bar 293 stretches out the side wall of swing handle 29 is fixedly installed handwheel 294.Rotary motion handle 29 hangs oneself hoist combination 5
When the crane risen turns to specified lowered position, rotary motion handwheel 294 rotates handwheel 294 and drives screw rod 293 to rotate, screw rod
293, which rotate length direction of the drive location-plate 36 along swing handle 29, moves, until location-plate 36 is moved to corresponding locating slot
In 33.Now, swing handle 29 is fixed on positioning disk 31.
For the location-plate 36 on further locking positioning disk 31, the one end of location-plate 36 away from swing handle 29 is provided with
Latch assembly 4.With reference to Fig. 4 and Fig. 5, latch assembly 4 includes the back-moving spring 41 in compressive state, the corresponding edge of location-plate 36
Length direction offers spring groove 363, and the depth of spring groove 363 is the half of the length of location-plate 36, one end of back-moving spring 41
It is fixedly connected on inside location-plate 36, the other end of back-moving spring 41 is hinged with screens bar 42, and screens bar 42 is away from back-moving spring
41 side is fixedly installed block 43, and cross-sectional area of the block 43 at diameter is more than the cross-sectional area of spring groove 363.Work as gear
When block 43 is not acted on by external force, block 43 is under the tensioning function of back-moving spring 41, and the outer surface of block 43 contacts at spring groove
363 edge.
The side of location-plate 36 towards positioning disk 31 opens up jagged 44, when hoist combination 5 turns to specified lowered position,
Location-plate 36 is sticked in inside locating slot 33, applies an active force away from handle direction to block 43, and block 43 drives card
Position bar 42 extracts location-plate 36 out.Towards the direction rotary block 43 of positioning disk 31, while opening relevant position on positioning disk 31
Baffle plate 34, screens bar 42 is positioned in buckling groove 32 through breach 44, fastens baffle plate 34, block 43 and screens bar 42 are fixed
In in the region of baffle plate 34 and the formation of buckling groove 32, now, location-plate 36 is secured entirely in the locating slot 33 of positioning disk 31, right
The runner assembly 2 of hoisting device is positioned.
This specific embodiment is only to explain of the present utility model, and it is not to limitation of the present utility model, ability
Field technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but
As long as all being protected in right of the present utility model by Patent Law.
Claims (7)
1. a kind of hoisting device for concrete sedimentation basin, including the fixing axle (25) being perpendicularly fixed on support frame (1), with
And rotate the driving wheel (27) being socketed in fixing axle (25) and the positioning component (3) being fixed in fixing axle (25), its feature
It is：The positioning component (3) includes being fixedly installed on the positioning disk that the fixing axle (25) is overlapped with fixing axle (25) axis
(31), surface of the positioning disk (31) away from driven pulley (24) side offers depth no more than fixed around positioning disk (31) axle center
The locating slot (33) of position disk (31) thickness, the driving wheel (27), which is located in the plane held greatly, to be provided with around fixing axle (25) rotation
And to fixing axle (25) axial line distance be more than positioning disk (31) radius swing handle (29), the swing handle (29) away from from
One end of driving wheel (24) is slidably connected and width is less than the location-plate (36) of the locating slot (33) width.
2. the hoisting device according to claim 1 for concrete sedimentation basin, it is characterized in that：The swing handle (29)
The internal length direction along swing handle (29) is fixedly installed the steel pole (292) of more than two, and parallel to the steel pole
(292) screw rod (293) set in the swing handle (29) inner rotation, the location-plate (36) is offered along the steel pole
(292) pilot hole slided（361）, and along the screwed hole (362) of the screw rod (293) motion, the screw rod (293) exceeds
The part of swing handle (29) is fixedly installed the handwheel (294) for driving screw rod (293) to rotate.
3. the hoisting device according to claim 2 for concrete sedimentation basin, it is characterized in that：The location-plate (36) is remote
One end from swing handle (29) offers spring groove (363), and the spring groove (363) is internal to be fixed with compressive state
Back-moving spring (41), the other end of the back-moving spring (41), which is hinged, is provided with screens bar (42), the screens bar (42) it is another
The cross-sectional area that one end is fixed with diameter is more than the block (43) of spring groove (363) cross-sectional area, positioning disk (31) side
The position that edge is located at the locating slot (33) radially opens up buckling groove (32), one side of the buckling groove (32) along positioning disk (31)
It is hinged the baffle plate (34) that fastening has length to be more than buckling groove (32) width.
4. the hoisting device according to claim 3 for concrete sedimentation basin, it is characterized in that：On the outside of the baffle plate (34)
The position being hinged positioned at baffle plate (34) and buckling groove (32) is provided with the torsion spring (35) for fastening baffle plate (34).
5. the hoisting device according to claim 1 for concrete sedimentation basin, it is characterized in that：On support frame as described above (1)
Fixed cover in the sleeve pipe (23) around support frame (1) fixed-axis rotation, described sleeve pipe (23) is socketed with to be connected to the driving wheel (27)
The driven pulley (24) of rotation, the driving wheel（27）For bevel gear.
6. the hoisting device according to claim 5 for concrete sedimentation basin, it is characterized in that：The driving wheel (27) two
The spacing ring (26) close to support frame (1) side is respectively fixed with the fixing axle (25) of side, and away from support frame (1) side
Locating ring (28).
7. the hoisting device according to claim 6 for concrete sedimentation basin, it is characterized in that：In the locating ring (28)
The wedge key (281) that insertion is engaged with keyway size in keyway, the keyway is radially offered on footpath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720275670.3U CN206580469U (en) | 2017-03-21 | 2017-03-21 | Hoisting device for concrete sedimentation basin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720275670.3U CN206580469U (en) | 2017-03-21 | 2017-03-21 | Hoisting device for concrete sedimentation basin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206580469U true CN206580469U (en) | 2017-10-24 |
Family
ID=60113805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720275670.3U Expired - Fee Related CN206580469U (en) | 2017-03-21 | 2017-03-21 | Hoisting device for concrete sedimentation basin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206580469U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107324228A (en) * | 2017-08-20 | 2017-11-07 | 南京恒众机械有限公司 | A kind of switch board hanging apparatus |
| CN109850775A (en) * | 2019-01-30 | 2019-06-07 | 国网河南省电力公司商丘供电公司 | Hanging apparatus is used in a kind of maintenance of power equipment |
-
2017
- 2017-03-21 CN CN201720275670.3U patent/CN206580469U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107324228A (en) * | 2017-08-20 | 2017-11-07 | 南京恒众机械有限公司 | A kind of switch board hanging apparatus |
| CN109850775A (en) * | 2019-01-30 | 2019-06-07 | 国网河南省电力公司商丘供电公司 | Hanging apparatus is used in a kind of maintenance of power equipment |
| CN109850775B (en) * | 2019-01-30 | 2024-02-23 | 国网河南省电力公司商丘供电公司 | Hoisting device for maintenance of power equipment |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171024 |
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| CF01 | Termination of patent right due to non-payment of annual fee |