CN109672114A - A kind of cable laying device - Google Patents
A kind of cable laying device Download PDFInfo
- Publication number
- CN109672114A CN109672114A CN201910053480.0A CN201910053480A CN109672114A CN 109672114 A CN109672114 A CN 109672114A CN 201910053480 A CN201910053480 A CN 201910053480A CN 109672114 A CN109672114 A CN 109672114A
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- China
- Prior art keywords
- mobile base
- plate
- shaft
- cable
- fixed
- 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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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 22
- 238000010276 construction Methods 0.000 description 14
- 238000003780 insertion Methods 0.000 description 9
- 230000037431 insertion Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
Landscapes
- Sewage (AREA)
- Electric Cable Installation (AREA)
Abstract
The present invention relates to a kind of cable laying devices, and including mobile base and the handrail being located in mobile base, mobile base is equipped with grooving mechanism, expanding mechanism, is laid with mechanism and Hui Mai mechanism.Grooving mechanism includes the bearing block being fixed on mobile base bottom surface, the shaft being rotatablely connected with bearing block, is fixed on the top of shaft front end, the groove being located on top and the fluting power device being located in mobile base.Expanding mechanism includes the vertical plate being vertically fixed in mobile base, the side axle being rotatablely connected with the vertical shaft of vertical plate rotation connection, the drive bevel gear for being located at vertical shaft lower end and vertical plate, the driven wheel of differential for being located at side axle upper end, the expansion power device for being located at the shift plate of side axle lower end and being located on vertical plate.The present invention is laid with prevention temporary cable on site, has the easy to operate and fast technical effect of laying speed.
Description
Technical field
The present invention relates to the technical fields of construction cable laying, more particularly, to a kind of cable laying device.
Background technique
Construction site refers to the building construction for carrying out industry and civilian projects, civil engineering, equipment installation, pipelining etc.
The place that construction activities, the construction site of approved occupancy and the mankind keep the safety in production, civilization work, build, including land,
Marine and all aerial are able to carry out the region of construction working.Project manager is responsible for the field management of work progress comprehensively,
Construction site management responsibility should be established, and organizes reality according to project scale, the concrete condition of technology complexity and construction site
It applies.
Construction site needs to use numerous equipment, needs temporarily to be laid with power cable.Construction site equipment is more, mobility
Greatly, therefore now the aerial mode being laid with or be directly laid on the ground is mostly used greatly.The aerial cable needs that are laid with face
When setting support, the construction time is long, in vehicle driving and equipment running process, requires to pay special attention to.Ground laying construction is
Cable is directly placed on ground, this mode construction is simple can be quickly laid with according to field condition, but in vehicle
And the big construction site of flow of personnel amount, the rate of decay of cable is than very fast.
Summary of the invention
The object of the present invention is to provide one kind to be quickly laid with the cable laying device of cable in underground.
Above-mentioned purpose of the invention has the technical scheme that
A kind of cable laying device, including mobile base and the handrail being located in mobile base；The mobile base is equipped with and opens
Groove mechanism, is laid with mechanism and Hui Mai mechanism at expanding mechanism；
The grooving mechanism includes the bearing block being fixed on mobile base bottom surface, the shaft being rotatablely connected with bearing block, fixation
In the top of shaft front end, the groove that is located on top and the fluting power device being located in mobile base；
The output end of the fluting power device and the rear end of shaft connect.
By using above-mentioned technical proposal, when being laid with cable using the present invention, fluting power device is driven by shaft and is pushed up
Sharp high-speed rotation, it is top with ground face contact after make its loosening, then the soil of loosening is allocated to two sides by expanding mechanism, on the ground shape
At groove.Mechanism is laid with as cable is placed into groove by the advance of mobile base, expanding mechanism is dialled by last Hui Mai mechanism
Soil out is back into groove, and cable is buried.In whole process, staff only needs to push mobile base to move by handrail
It is dynamic to complete whole cable laying work, it is easy to operate, it is easy to use, it can effectively shorten laying time of cable,
Enable a device to work of quickly marching into the arena.
The present invention is further arranged to: further including angular adjustment apparatus；
The angular adjustment apparatus includes the long hole being opened in mobile base, the shaft being fixed in long hole, covers in shaft
Rotor plate and the electric cylinder being hinged in mobile base；
The piston rod of the electric cylinder is hinged on rotor plate；
The bearing block is fixed on the bottom surface of rotor plate.
The angle between shaft and ground can be adjusted when electric cylinder acts by using above-mentioned technical proposal, thus
Change top insertion depth.Soil compared with it is soft when top insertion depth it is big, the primary excavation for completing groove；It is pushed up when soil is harder
The single insertion depth of point is small, repeatedly excavates the excavation of groove.It can be adjusted at any time according to the hardness of soil in this way.
The present invention is further arranged to: the expanding mechanism includes the vertical plate and vertical plate being vertically fixed in mobile base
The vertical shaft of rotation connection, the drive bevel gear for being located at vertical shaft lower end, with vertical plate rotation connection side axle, be located at side axle upper end from
Dynamic bevel gear, the shift plate for being located at side axle lower end and the expansion power device being located on vertical plate；
The output end of the expansion power device and the upper end of vertical shaft connect；
The drive bevel gear is engaged with driven wheel of differential；
The quantity of the side axle is two；
Two side axles are symmetrically arranged at the two sides of vertical shaft.
By using above-mentioned technical proposal, the present invention provides a kind of specific constructive forms of expanding mechanism, expand power
When device works, shift plate rotation is driven by vertical shaft, drive bevel gear, driven wheel of differential and side axle.Shift plate can in rotation
Grooving mechanism is loosened into the soil in region and pushes both sides, forms groove.
The present invention is further arranged to: the shift plate surrounds the axis circular array of side axle.
By using above-mentioned technical proposal, soil is transferred to, can guarantee to form the depth of groove by multiple shift plate simultaneously operations
Degree.
The present invention is further arranged to: the laying mechanism includes the right angle frame being fixed in mobile base, covers at right angle
Cable frame, the unwrapping wire hole being opened in mobile base on frame and the directive wheel being located on mobile base bottom surface.
By using above-mentioned technical proposal, the present invention provides a kind of specific constructive form for being laid with mechanism, when use, will
Cable winds in cable frame, then by one end pass through direction hole after on directive wheel.With the advance of mobile base, line
Cable is routed in groove automatically.
The present invention is further arranged to: the Hui Mai mechanism includes the short axle being fixed on mobile base ground and covers short
Buried plate is returned on axis.
By using above-mentioned technical proposal, the present invention provides a kind of specific constructive form of Hui Mai mechanism, process of deployment
In, it returns buried plate and the soil of groove two sides is back into groove, cable is buried.
The present invention is further arranged to: the right angle frame is equipped with tension adjusting device；
The tension adjusting device includes the friction plate being symmetrically fixed on right angle frame and the friction plate that is located on friction plate；
The cable frame is located between two friction plates；
Two friction plates are contacted with adjacent cable frame side respectively.
By using above-mentioned technical proposal, tension adjusting device can limit the velocity of rotation of cable frame, avoid its revolving speed
It is too fast to cause cable loose.
The present invention is further arranged to: one of them described friction plate is fixed on right angle frame, another described friction plate
It covers on right angle frame；
The right angle frame is equipped with locking nut；
The locking nut is withstood on the friction plate being rotatablely connected with right angle frame.
It can be increased or decreased between cable frame and friction plate when locking nut rotates by using above-mentioned technical proposal
Frictional force, thus it is possible to vary the velocity of rotation of cable frame makes the forward speed of itself and mobile base match.
The present invention is further arranged to: the locking nut is equipped with holding rod.
By using above-mentioned technical proposal, a hand holds handrail and mobile base is pushed to advance, and another hand passes through holding rod
It being capable of rotation lock nut.This adjustment mode does not need to suspend, can be timely according to the actual situation in advancement
Adjust the transfer speed of cable frame.
In conclusion advantageous effects of the invention are as follows:
1. during being laid with cable, grooving mechanism can be by the soil on ground present invention employs the working method of automation
It loosens；The soil of loosening can be pushed to two sides by expanding mechanism, form groove；Cable can be placed into groove by laying structure；
The soil that expanding mechanism is released can be back into groove by Hui Mai mechanism, and cable is buried.Staff only needs in whole process
It pushes the present invention to advance along defined route, the laying efficiency of cable can be effectively improved.
2. the grooving mechanism in the present invention can be adjusted according to the hardness of soil, top insertion is deep when soil is harder
Degree is shallow, and top insertion depth is deep when soil is softer, can be adjusted, can effectively ensure that according to the actual situation on site
Process of deployment is normally carried out.
3. the present invention is laid in mechanism and increases friction plate and friction plate, can be according to laying speed and line in the course of work
The rotation situation of cable frame is adjusted at any time, and the velocity of rotation of cable frame is made to match with laying speed, is not on cable
The case where overtension or cable slack.
Detailed description of the invention
Fig. 1 is schematic perspective view of the invention.
Fig. 2 is the structural schematic diagram of expanding mechanism of the invention.
Fig. 3 is the schematic diagram of mobile base bottom surface of the invention.
Fig. 4 is the connection schematic diagram of shaft and mobile base.
Fig. 5 is the structural schematic diagram of tension adjusting device of the invention.
In figure, 11, mobile base；12, handrail；21, bearing block；22 bearing blocks；23, shaft；24, top；25, groove；
26, fluting power device；31, long hole；32, shaft；33, rotor plate；34, electric cylinder；41, vertical plate；42, vertical shaft；43, actively
Bevel gear；44, side axle；45, driven wheel of differential；46, shift plate；47, power device is expanded；51, right angle frame；52, cable frame；53,
Unwrapping wire hole；54, directive wheel；61, short axle；62, buried plate is returned；71, friction plate；72, friction plate；8, locking nut；9, holding rod.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
It referring to Fig.1, is a kind of cable laying device disclosed by the invention, including grooving mechanism, expanding mechanism, laying mechanism
Amount to four parts with Hui Mai mechanism, this four parts are installed in mobile base 11, and mobile base 11 includes a job
Platform and four traveling wheels being mounted on workbench bottom surface, the side of mobile base 11 is welded with handrail 12, facilitates staff
It pushes.
More convenient for description, the side that handrail 12 will be welded in mobile base 11 is known as rear side, with the side phase
Pair side be known as front side.
Referring to Fig. 2 and Fig. 3, long hole 31 is opened in mobile base 11 close to the place of front side, 33 sets of rotor plate in shaft 32,
It can be rotated around shaft 32.Electric cylinder 34 is hinged in mobile base 11, and piston rod is hinged on rotor plate 33, electronic
When cylinder 34 acts, rotor plate 33 can be made to rotate.
Bearing block 21 and bearing block 22 are bolted on the bottom surface of rotor plate 33, shaft 23 passes through the two bearings
Seat, one end are welded with top 24, and other end key connection has a belt pulley.Fluting power device 26 has motor and speed reducer group
At motor and speed reducer is installed on the top surface of rotor plate 33, and equally key connection has a belt on the output shaft of speed reducer
Wheel, two belt pulleys are connected by belt pulley, and when motor rotates, top 24 high speed can be driven by the component on the transmission chain
Rotation.Groove 25 is evenly equipped on top 24 surface, groove 25 can be improved the frictional force between top 24 and soil.
Vertical plate 41 in expanding mechanism is vertically welded in mobile base 11, is equipped with three groups thereon and is amounted to six bearings
Seat, the both ends of vertical shaft 42 are rotatablely connected with two bearing blocks therein respectively.Power device 47 is expanded equally by motor and deceleration
Machine composition, the two are installed on vertical plate 41.The upper end of vertical shaft 42 and the output axis connection of speed reducer, lower end key connection have actively
Bevel gear 43.Two side axles 44 are connect with remaining two groups of bearing block respectively, and the upper end key connection of side axle 44 has driven wheel of differential
45, lower end is welded with shift plate 46, and the quantity of shift plate 46 is 4-6, around the axis circular array of side axle 44.In mobile base 11
It drives there are two hole, the lower end of two side axles 44 is stretched out from corresponding hole respectively, and shift plate 46 is located at the lower section of mobile base 11.
Drive bevel gear 43 is engaged with driven wheel of differential 45, vertical shaft when expansion power device 47 acts, on the transmission chain
42, drive bevel gear 43, driven wheel of differential 45 and side axle 44 start turning.
Short axle 61 in Hui Mai mechanism is welded on the bottom surface of mobile base 11, returns the fixed short axle in middle section of buried plate 62
On 61.
Referring to Fig. 4, long hole 31 is opened in mobile base 11 close to the place of front side, and the both ends of shaft 32 are respectively welded at long hole
On 31 one group of opposite flank.
Referring to Fig. 5, the right angle frame 51 being laid in mechanism is made of upright bar and cross bar two parts, and the lower end of upright bar is welded on shifting
On dynamic pedestal 11.52 sets of cable frame on cross bar, can rotate under the effect of external force.It is located at cable frame 52 in mobile base 11
The place of lower section is provided with a unwrapping wire hole 53, and a bracket has been welded on bottom surface, has been equipped with directive wheel 54, directive wheel on bracket
54 are located at the rear in unwrapping wire hole 53.
It being set on cross bar there are two friction plate 71, one of them is welded on cross bar on one end of upright bar, another
It covers on cross bar.Screw thread is provided on cross bar, locking nut 8 is threadedly coupled with cross bar, and one side is withstood on to be slidably connected with cross bar
On friction plate 71.It is welded with holding rod 9 on the side of locking nut 8, when pushing holding rod 9, is able to drive the rotation of locking nut 8.
Friction plate 72 on the same friction plate 71 is made of two semi-circular portions, can be adhered directly on friction plate 71 or
Sieve's person bolt is fixed on friction plate 71.It is sticked on friction plate 71, when replacement needs to heat friction plate 71, makes the glue of abutting edge
Water failure, then adheres to new friction plate 72 on friction plate 71；It is bolted on friction plate 71, by fixed friction when replacement
The screw of piece 72 is replaced after removing.
Power device 26, electric cylinder 34 and the expansion power device 47 of slotting in the present invention are driven by battery, because
When cable laying, construction site does not have operating condition also, needs to use battery as power source, battery is directly placed at
In mobile base 11.
The implementation principle of the present embodiment are as follows:
Cable is twined onto cable frame 52, then rotates cable frame 52 with hand, and perceive its rotary resistance, rotary resistance is improper
When grasp holding rod 9 and rotate, make locking nut 8 push the friction plate 71 that is in contact with it to close to or far from cable frame 52
Direction it is mobile, adjust frictional force between the two.
Starting fluting power device 26, when fluting power device 26 acts, by driving shaft with the transmission mechanism of connection
23 rotations, when shaft 23 rotates, top the 24 of lower end are also started turning.Then electric cylinder 34 is rotated, rotor plate 33 is opened
Begin to rotate, adjusts the depth of top 24 insertion soil, top 24 insertion depth should be less when adjusting for the first time, avoids resistance
Power device 26 of slotting when excessive is burnt out.It pushes mobile base 11 mobile by handrail 12 after adjustment, passes through resistance when advance
The depth for further adjusting top 24 insertion soil then increase the depth of top 24 insertion soil when resistance is smaller, on the contrary then subtract
It is few.If soil is harder, need to slot first, is being laid with cable after the completion of fluting.Mechanism is laid with when only being slotted
It does not work.
After being ready to complete, starts the laying work for carrying out cable, one end of cable in cable frame 52 is pulled out first, is passed through
Unwrapping wire hole 53 in mobile base 11 is simultaneously stretched out around after directive wheel 54 from the rear end of mobile base 11.
Starting fluting power device 26 and expansion power device 47.Fluting power device 26 starts that shaft 23 is driven to rotate,
Top the 24 of 23 lower end of shaft equally start turning, and ground is loosened.
It expands and the drive bevel gear 43 of vertical shaft 42 and 42 lower end of vertical shaft is driven to rotate when power device 47 works.Active conical tooth
It takes turns the driven wheel of differential 45 being engaged with when 43 rotation, the side axle 44 engaged with driven wheel of differential 45 and is welded in side axle 44
Shift plate 46 starts turning.Shift plate 46 pushes the soil that ground loosens aside in rotation, forms groove.
Staff pushes mobile base 11 to move forward by handrail 12, needs to be slammed on ground with foot when just starting
Cable.Buried plate 62 is returned the soil on groove both sides is back into groove to bury cable.During advance, staff needs continuous
The soil of backfill is treaded.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (9)
1. a kind of cable laying device, including mobile base (11) and the handrail (12) being located on mobile base (11)；Its feature
Be: the mobile base (11) is equipped with grooving mechanism, expanding mechanism, is laid with mechanism and Hui Mai mechanism；
The grooving mechanism includes that the bearing block (21,22) being fixed on mobile base (11) bottom surface and bearing block (21,22) turn
It moves the shaft (23) connected, top (24) that are fixed on shaft (23) front end, the groove (25) being located on top (24) and is located at
Fluting power device (26) in mobile base；
The output end of fluting power device (26) is connect with the rear end of shaft (23).
2. a kind of cable laying device according to claim 1, it is characterised in that: further include angular adjustment apparatus；
The angular adjustment apparatus includes the long hole (31) being opened on mobile base (11), the shaft being fixed in long hole (31)
(32), it covers in the rotor plate (33) on shaft (32) and the electric cylinder (34) being hinged on mobile base (11)；
The piston rod of the electric cylinder (34) is hinged on rotor plate (33)；
The bearing block (21,22) is fixed on the bottom surface of rotor plate (33)；
Fluting power device (26) is fixed on the top surface of rotor plate (33).
3. a kind of cable laying device according to claim 1, it is characterised in that: the expanding mechanism includes vertical fixed
The vertical shaft (42) of vertical plate (41) and vertical plate (41) rotation connection on mobile base (11), the master for being located at vertical shaft (42) lower end
Dynamic bevel gear (43), the driven wheel of differential (45) for being located at side axle (44) upper end, is set the side axle (44) being rotatablely connected with vertical plate (41)
Shift plate (46) in side axle (44) lower end and the expansion power device (47) that is located on vertical plate (41)；
The output end of expansion power device (47) is connect with the upper end of vertical shaft (42)；
The drive bevel gear (43) is engaged with driven wheel of differential (45)；
The quantity of the side axle (44) is two；
Two side axles (44) are symmetrically arranged at the two sides of vertical shaft (42).
4. a kind of cable laying device according to claim 3, it is characterised in that: the shift plate (46) surrounds side axle (44)
Axis circular array.
5. a kind of cable laying device according to claim 1, it is characterised in that: the laying mechanism includes being fixed on shifting
Right angle frame (51) on dynamic pedestal (11), cover on right angle frame (51) cable frame (52), be opened in putting on mobile base (11)
String holes (53) and the directive wheel (54) being located on mobile base (11) bottom surface.
6. a kind of cable laying device according to claim 3, it is characterised in that: the Hui Mai mechanism includes being fixed on shifting
It moves the short axle (61) on pedestal (11) ground and covers and go back to buried plate (62) on short axle (61).
7. a kind of cable laying device according to claim 5, it is characterised in that: the right angle frame (51) is equipped with tension
Adjust device；
The tension adjusting device includes the friction plate (71) being symmetrically fixed on right angle frame (51) and is located on friction plate (71)
Friction plate (72)；
The cable frame (52) is located between two friction plates (71)；
Two friction plates (72) contact with adjacent cable frame (52) side respectively.
8. a kind of cable laying device according to claim 7, it is characterised in that: one of them described friction plate (71) is solid
It is scheduled on right angle frame (51), another described friction plate (71) covers on right angle frame (51)；
The right angle frame (51) is equipped with locking nut (8)；
The locking nut (8) withstands on the friction plate (71) being rotatablely connected with right angle frame (51).
9. a kind of cable laying device according to claim 8, it is characterised in that: the locking nut (8) is equipped with and holds
Bar (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910053480.0A CN109672114B (en) | 2019-01-21 | 2019-01-21 | Cable laying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910053480.0A CN109672114B (en) | 2019-01-21 | 2019-01-21 | Cable laying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109672114A true CN109672114A (en) | 2019-04-23 |
| CN109672114B CN109672114B (en) | 2020-07-03 |
Family
ID=66149629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910053480.0A Expired - Fee Related CN109672114B (en) | 2019-01-21 | 2019-01-21 | Cable laying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109672114B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740351A (en) * | 2020-07-05 | 2020-10-02 | 李春丽 | Direct-buried communication cable laying machine equipment |
| CN111799704A (en) * | 2020-07-20 | 2020-10-20 | 泉州泉港创鹏工业设计有限公司 | Hydraulic and hydroelectric engineering is with classifiable device of sunkening cord |
| CN112061883A (en) * | 2020-09-18 | 2020-12-11 | 宇诚信用评价咨询(湖北)有限公司 | Device for adjusting tension of electric wire and cable |
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| CN108711788A (en) * | 2018-06-28 | 2018-10-26 | 芜湖明智自动化科技有限公司 | Automatic laying equipment for overland cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3648282A (en) * | 1970-02-17 | 1972-03-07 | John B Kelly | Alarm signal apparatus to indicate damage to the insulation of an electrical cable as it is being laid underground |
| CN2657356Y (en) * | 2003-10-14 | 2004-11-24 | 李善文 | Hole-making ditching machine |
| CN1933038A (en) * | 2006-09-28 | 2007-03-21 | 上海乐庭电子线缆有限公司 | Cage twisting machine wire barrow paying out tension controlling method and apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740351A (en) * | 2020-07-05 | 2020-10-02 | 李春丽 | Direct-buried communication cable laying machine equipment |
| CN111799704A (en) * | 2020-07-20 | 2020-10-20 | 泉州泉港创鹏工业设计有限公司 | Hydraulic and hydroelectric engineering is with classifiable device of sunkening cord |
| CN112061883A (en) * | 2020-09-18 | 2020-12-11 | 宇诚信用评价咨询(湖北)有限公司 | Device for adjusting tension of electric wire and cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109672114B (en) | 2020-07-03 |
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