CN208563939U - A kind of operation platform for constructing on the outside of guardrail - Google Patents
A kind of operation platform for constructing on the outside of guardrail Download PDFInfo
- Publication number
- CN208563939U CN208563939U CN201820791291.4U CN201820791291U CN208563939U CN 208563939 U CN208563939 U CN 208563939U CN 201820791291 U CN201820791291 U CN 201820791291U CN 208563939 U CN208563939 U CN 208563939U
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- China
- Prior art keywords
- fixedly connected
- bottom plate
- bevel gear
- operation platform
- constructing
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- 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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Abstract
The utility model discloses a kind of operation platforms for constructing on the outside of guardrail, including bottom plate, the lower surface of the bottom plate is fixedly connected by electric pushrod with the upper surface of friction pad, the lower surface of the bottom plate is fixed to connect with the upper surface of four sleeves, and four sleeves are located at the four corners of lower surface of base plate, the lower surface of bottom plate and the upper surface of the first rotating device are clamped, first rotating device is engaged with driving device, driving device is connected to the left side of sleeve, and the surface of the first rotating device is threaded with thread barrel.The operation platform constructed for guardrail outside, pass through handle, the second shaft, second bearing, second bevel gear, first bevel gear, threaded post, the collective effect of thread barrel and road wheel, staff is facilitated to adjust the height of four road wheels, so that the operation platform when uneven pavement construction also can smooth working, and do not need staff it is artificial go to smooth-riding surface using cushion block.
Description
Technical field
The utility model relates to technical field of construction, specially a kind of operation platform for constructing on the outside of guardrail.
Background technique
Construction, meaning engineering are built according to plan, and language goes out Song Zhuxi " western original Cui Jia man of virtue and ability book ": " planting at bamboo and wood to saying, probably also
Construction can just be enabled."
The place of construction site is generally not smooth soil, existing operation platform, although can move, when some
Unevenly surface construction needs the pinner block or others that people are artificial when operation platform inclination, so that work people
Be not when member is above it is very stable, it is time-consuming and laborious, and stability is bad in use for existing operation platform, does not have
Good buffer structure, user does not have good safeguard measure in use, thus greatly reduces security performance, no
It is able to satisfy the demand of user.
Utility model content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the utility model provides a kind of operation platform for constructing on the outside of guardrail, solution
It has determined existing operation platform, not can solve the inclination of operation platform and the problem that stability is bad.
(2) technical solution
To achieve the above object, the utility model provides the following technical solutions: a kind of construction for constructing on the outside of guardrail
The lower surface of platform, including bottom plate, the bottom plate is fixedly connected by electric pushrod with the upper surface of friction pad, the bottom plate
Lower surface is fixed to connect with the upper surface of four sleeves, and four sleeves are located at the four corners of lower surface of base plate, described
The lower surface of bottom plate and the upper surface of the first rotating device are clamped, and first rotating device is engaged with driving device, the drive
Dynamic device is connected to the left side of sleeve, and the surface of first rotating device is threaded with thread barrel, the thread barrel
Lower surface is fixedly connected with the top of road wheel, and the left and right sides of the road wheel are fixedly connected to the first sliding block, and two
In the first sliding groove that the left and right sides for being slidably connected at sleeve lining respectively of a first sliding block open up.
The upper surface of the bottom plate is provided with inverter, and the inverter is located at the left side of fixed plate, the bottom plate it is upper
Surface is fixedly connected with the lower surface of fixed plate, and the upper surface of the fixed plate offers second sliding slot, the second sliding slot
Inner wall is slidably connected there are two the second sliding block, and the mutually separate one side of two the second sliding blocks by two springs respectively with the second cunning
The opposite face of slot inner wall is fixedly connected, and the upper surface of second sliding block is fixedly connected with the lower surface of the second rotating device, and
Two the second rotating devices are hinged by the second pin shaft, and the top of second rotating device and the lower surface of support plate are slided and connected
It connects, the lower surface of the support plate is fixedly connected by four hydraulic cylinders with the upper surface of fixed plate, and four hydraulic cylinder difference
Four corners positioned at fixed plate upper surface.
The upper surface of the support plate is fixedly connected with the lower surface of protective fence, and the upper surface of the protective fence is fixedly connected
There are two brackets, and the upper surface of two brackets is fixedly connected with the lower surface of shield, and the upper surface of the shield is solid
Surely solar panels are connected with, the upper surface of the support plate is fixedly connected with the lower surface of non-slip mat.
Preferably, first rotating device includes first bearing, the lower surface of the first bearing clamping bottom plate, described
The inner surface of first bearing is socketed with first rotating shaft, and the bottom end of the first rotating shaft passes through the top of first bevel gear and threaded post
It is fixedly connected, the first bevel gear is engaged with driving device, and the surface of the threaded post is threaded with thread barrel.
Preferably, the driving device includes second bevel gear, the second bevel gear and first bevel gear engagement, described
The left side of second bevel gear is fixedly connected with the right end of the second shaft, and the surface of second shaft is socketed with second bearing,
The second bearing is connected to the left side of sleeve, and the left end of second shaft is fixedly connected with the right side of handle.
Preferably, second rotating device includes fixed block, the upper table of the lower surface of the fixed block and the second sliding block
Face is fixedly connected, and the front of the fixed block is hinged by the back side of the first pin shaft and pulley, and the pulley of front side and rear side
Pulley is hinged by the second pin shaft, and the top of the pulley is slidably connected at the lower surface of support plate.
Preferably, the upper surface of the bottom plate is provided with battery, and the battery is located at the right side of fixed plate, the storage
The upper surface of battery is provided with switch.
Preferably, the output end of the solar panels is electrically connected with the input terminal of inverter, the output end of the inverter
It is electrically connected with the input terminal of battery, the output end of the battery is electrically connected with the input terminal of switch, the output of the switch
End is electrically connected with the input terminal of hydraulic cylinder and electric pushrod respectively, and the model LW5D-16 universal change-over switch switched.
(3) beneficial effect
The utility model provides a kind of operation platform for constructing on the outside of guardrail, have it is following the utility model has the advantages that
(1), this is used for the operation platform constructed on the outside of guardrail, passes through handle, the second shaft, second bearing, the second cone tooth
Wheel, first bevel gear, threaded post, the collective effect of thread barrel and road wheel, swing handle, handle drive the rotation of the second shaft,
Second shaft drives second bevel gear rotation, and second bevel gear drives first bevel gear rotation, and first bevel gear drives threaded post
Rotation, threaded post rotation, so that thread barrel moves up and down, thread barrel drives road wheel to move up and down, and facilitates staff
The height of four road wheels is adjusted, so that the operation platform also being capable of steady work when uneven pavement construction
Make, and does not need the artificial use cushion block of staff and go to smooth-riding surface.
(2), this is used for the operation platform constructed on the outside of guardrail, passes through setting protective fence, the common work of bracket and non-slip mat
With by the way that shield is arranged, keeping away so that construction personnel is safer on the supporting plate, and avoids people and slip in support plate
Exempt from staff to be exposed to the sun in burning sun situation, and avoids the case where staff suffers from the rainy day and drenched.
(3), this is used for the operation platform constructed on the outside of guardrail, can by setting solar panels, inverter and battery
Solar energy is converted to electric energy, realizes the effect of energy-saving and emission-reduction, and the direct current of generation is become alternating current by inverter, thus
The use of more convenient electric pushrod and hydraulic cylinder, and the utility model which has a compact structure and a reasonable design, it is practical.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure that the utility model is faced；
Fig. 2 is the structural schematic diagram amplified at the utility model A；
Fig. 3 is the structural schematic diagram amplified at the utility model B.
In figure: 1 bottom plate, 2 fixed plates, 3 sleeves, 4 first rotating devices, 41 first bearings, 42 first rotating shafts, 43 screw threads
Column, 44 first bevel gears, 5 driving devices, 51 second bevel gears, 52 second shafts, 53 second bearings, 54 handles, 6 thread barrels, 7
Road wheel, 8 first sliding blocks, 9 first sliding grooves, 10 second sliding slots, 11 second sliding blocks, 12 springs, 13 inverters, 14 second rotation dresses
It sets, 141 fixed blocks, 142 first pin shafts, 143 pulleys, 15 second pin shafts, 16 hydraulic cylinders, 17 support plates, 18 non-slip mats, 19 protection
Column, 20 brackets, 21 shields, 22 solar panels, 23 batteries, 24 switches, 25 electric pushrods, 26 friction pads.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1-3, the utility model provides a kind of technical solution: a kind of construction for constructing on the outside of guardrail is flat
Platform, including bottom plate 1, the upper surface of bottom plate 1 are provided with battery 23, and battery 23 is located at the right side of fixed plate 2, battery 23
Upper surface is provided with switch 24, by the way that switch 24 is arranged, so that staff is to 16 working condition of electric pushrod 25 and hydraulic cylinder
Manipulation it is more convenient, and the model LW5D-16 universal change-over switch of switch 24, the output end and inverter of solar panels 22
13 input terminal electrical connection, by the way that inverter 13 is arranged, the direct current that solar panels 22 generate is become alternating current by inverter 13,
To the use of more convenient electric pushrod 25 and hydraulic cylinder 16, the input terminal of the output end and battery 23 of inverter 13 is electrically connected
It connects, the output end of battery 23 is electrically connected with the input terminal of switch 24, by the way that battery 23 is arranged, can store solar panels 22
The electric energy of conversion, so that energy-efficient effect is played, the input with hydraulic cylinder 16 and electric pushrod 25 respectively of the output end of switch 24
End electrical connection, the lower surface of bottom plate 1 are fixedly connected by electric pushrod 25 with the upper surface of friction pad 26, by the way that electronic push away is arranged
Bar 25, electric pushrod 25 extend, so that friction pad 26 moves downward, so as to which bottom plate 1 is fixed, avoid the construction
Platform is mobile when construction, and the lower surface of bottom plate 1 is fixed to connect with the upper surface of four sleeves 3, and four sleeves 3 divide
Not Wei Yu 1 lower surface of bottom plate four corners, the upper surface of the lower surface of bottom plate 1 and the first rotating device 4 is clamped, the first rotation dress
Setting 4 includes first bearing 41, by the way that first bearing 41 is arranged, so that the rotation of first rotating shaft 42 is more stable, so that the first cone
The rotation of gear 44 is more stable, so that the lifting that road wheel 7 is more stable, realizes the adjustment to 7 height of road wheel,
First bearing 41 is clamped the lower surface of bottom plate 1, and the inner surface of first bearing 41 is socketed with first rotating shaft 42, the bottom of first rotating shaft 42
End is fixedly connected by first bevel gear 44 with the top of threaded post 43, and first bevel gear 44 is engaged with driving device 5, driving dress
It sets 5 and includes second bevel gear 51, by setting first bevel gear 44 and second bevel gear 51, realize handle 54 and threaded post 43
Between transmission connection, converted the direction of movement, second bevel gear 51 and first bevel gear 44 engage, second bevel gear 51
Left side is fixedly connected with the right end of the second shaft 52, and the surface of the second shaft 52 is socketed with second bearing 53, passes through setting the
Two bearings 53, so that the rotation of second bevel gear 51 is more stable, realize so that the rotation of the second shaft 52 is more stable
The rotation of two bevel gears 51, second bearing 53 are connected to the left side of sleeve 3, the left end of the second shaft 52 and the right side of handle 54
Face is fixedly connected, and by the way that handle 54 is arranged, handle 54 drives the rotation of the second shaft 52, and the second shaft 52 drives second bevel gear 51
Rotation, second bevel gear 51 drive first bevel gear 44 to rotate, and first bevel gear 44 drives threaded post 43 to rotate, so that thread barrel
6 move up and down, and thread barrel 6 drives road wheel 7 to move up and down, and staff is facilitated to adjust the height of four road wheels 7, from
And make the operation platform when uneven pavement construction also can smooth working, the surface of threaded post 43 is threadedly coupled
There is thread barrel 6, the first rotating device 4 is engaged with driving device 5, by the way that road wheel 7 is arranged, facilitates the mobile construction of staff
Platform, so that the practicability of the operation platform is more preferable, driving device 5 is connected to the left side of sleeve 3, the first rotating device 4
Surface is threaded with thread barrel 6, and the lower surface of thread barrel 6 is fixedly connected with the top of road wheel 7, the left and right two of road wheel 7
Side is fixedly connected to the first sliding block 8, and the left and right sides for being slidably connected at 3 inner wall of sleeve respectively of two the first sliding blocks 8
In the first sliding groove 9 that face opens up, avoided by setting first sliding groove 9 so that the first sliding block 8 does more stable elevating movement
The rotation of road wheel 7.
The upper surface of bottom plate 1 is provided with inverter 13, and inverter 13 is located at the left side of fixed plate 2, the upper surface of bottom plate 1 with
The lower surface of fixed plate 2 is fixedly connected, and the upper surface of fixed plate 2 offers second sliding slot 10, by the way that second sliding slot 10 is arranged, is made
The side-to-side movement for obtaining the second sliding block 11 is more stable, so that the arcuate movement of pulley 143 is more stable, to support plate 17
Good supporting role is played in lifting, and the inner wall of second sliding slot 10 is slidably connected, and there are two the second sliding blocks 11, and two second cunnings
The mutually separate one side of block 11 is fixedly connected with the opposite face of 10 inner wall of second sliding slot respectively by two springs 12, by the way that bullet is arranged
Spring 12 plays the role of buffering to support plate 17, avoids the shaking of support plate 17 under the elastic force effect of spring 12, so that
Above, preferably work, the upper surface of the second sliding block 11 are fixedly connected staff with the lower surface of the second rotating device 14,
Second rotating device 14 includes fixed block 141, and the lower surface of fixed block 141 is fixedly connected with the upper surface of the second sliding block 11, Gu
The front for determining block 141 is hinged by the back side of the first pin shaft 142 and pulley 143, by the way that pulley 143 and the first pin shaft 142 is arranged,
The rotation for realizing pulley 143 also achieves the side-to-side movement of pulley 143, and the pulley 143 of the pulley 143 of front side and rear side
Hinged by the second pin shaft 15, the top of pulley 143 is slidably connected at the lower surface of support plate 17, and two the second rotating devices
14 is hinged by the second pin shaft 15, and the top of the second rotating device 14 and the lower surface of support plate 17 are slidably connected, support plate 17
Lower surface be fixedly connected by four hydraulic cylinders 16 with the upper surface of fixed plate 2, and four hydraulic cylinders 16 are located at fixation
The four corners of 2 upper surface of plate.By the way that hydraulic cylinder 16 is arranged, hydraulic cylinder 16 extends, so that support plate 17 moves upwards, thus
The height of adjustable support plate 17 facilitates the pinnacled construction of staff.
The upper surface of support plate 17 is fixedly connected with the lower surface of protective fence 19, and the upper surface of protective fence 19 is fixedly connected with
Two brackets 20, by the collective effect of setting protective fence 19, bracket 20 and non-slip mat 18, so that construction personnel is in support plate 17
On it is safer, and avoid people and slip in support plate 17, and following table of the upper surface of two brackets 20 with shield 21
Face is fixedly connected, and the upper surface of shield 21 is fixedly connected with solar panels 22, by the way that shield 21 is arranged, avoids staff
Be exposed to the sun in burning sun situation, and avoid the case where staff suffers from the rainy day and drenched, the upper surface of support plate 17 with
The lower surface of non-slip mat 18 is fixedly connected.
In use, staff first drags the operation platform and is moved to specified position, then staff's control is opened
24 are closed, so that electric pushrod 25 extends, so that friction pad 26 moves downward, when friction pad 26 is tightly overlapped with ground, work
Personnel control switch 24, so that electric pushrod 25 stops elongation, then staff's swing handle 54, handle 54 drive second turn
Axis 52 rotates, and the second shaft 52 drives second bevel gear 51 to rotate, and second bevel gear 51 drives first bevel gear 44 to rotate, and first
Bevel gear 44 drives threaded post 43 to rotate, and threaded post 43 rotates, so that thread barrel 6 moves up and down, thread barrel 6 drives road wheel
7 move up and down, and when operation platform is adjusted smooth, staff climbs up support plate 17, and then construction personnel controls
Switch 24, so that hydraulic cylinder 16 extends, so that support plate 17 moves upwards, when reaching suitable position, staff's control
Switch 24 is made, so that hydraulic cylinder 16 stops elongation.
It can to sum up obtain, this is used for the operation platform constructed on the outside of guardrail, passes through handle 54, the second shaft 52, second bearing
53, second bevel gear 51, first bevel gear 44, threaded post 43, the collective effect of thread barrel 6 and road wheel 7, swing handle 54,
Handle 54 drives the rotation of the second shaft 52, and the second shaft 52 drives second bevel gear 51 to rotate, and second bevel gear 51 drives first
Bevel gear 44 rotates, and first bevel gear 44 drives threaded post 43 to rotate, and threaded post 43 rotates, so that thread barrel 6 moves up and down,
Thread barrel 6 drives road wheel 7 to move up and down, and facilitates staff to adjust the height of four road wheels 7, so that the construction
Platform when uneven pavement construction also can smooth working, and do not need staff it is artificial go to put down using cushion block
Whole road surface.
Meanwhile the operation platform for being used to construct on the outside of guardrail, pass through setting protective fence 19, bracket 20 and non-slip mat 18
Collective effect passes through setting so that construction personnel is safer in support plate 17, and avoids people and slip in support plate 17
Shield 21 avoids staff from being exposed to the sun in burning sun situation, and avoids the feelings that staff suffers from the rainy day and drenched
Condition.
Meanwhile the operation platform for being used to construct on the outside of guardrail, pass through setting solar panels 22, inverter 13 and battery
23, solar energy can be converted to electric energy, realize the effect of energy-saving and emission-reduction, and inverter 13 becomes the direct current of generation to hand over
Galvanic electricity, thus the use of more convenient electric pushrod 25 and hydraulic cylinder 16, and the utility model which has a compact structure and a reasonable design, it is real
It is strong with property.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of operation platform for constructing on the outside of guardrail, including bottom plate (1), it is characterised in that: the following table of the bottom plate (1)
Face is fixedly connected by electric pushrod (25) with the upper surface of friction pad (26), the lower surface of the bottom plate (1) and four sleeves
(3) upper surface is fixed to connect, and four sleeves (3) are located at the four corners of bottom plate (1) lower surface, the bottom plate (1)
Lower surface and the upper surface of the first rotating device (4) be clamped, first rotating device (4) engages with driving device (5), institute
The left side that driving device (5) is connected to sleeve (3) is stated, the surface of first rotating device (4) is threaded with thread barrel
(6), the lower surface of the thread barrel (6) is fixedly connected with the top of road wheel (7), the left and right sides of the road wheel (7)
It is fixedly connected to the first sliding block (8), and the left and right two for being slidably connected at sleeve (3) inner wall respectively of two the first sliding blocks (8)
In the first sliding groove (9) that side opens up；
The upper surface of the bottom plate (1) is provided with inverter (13), and the inverter (13) is located at the left side of fixed plate (2), institute
The upper surface for stating bottom plate (1) is fixedly connected with the lower surface of fixed plate (2), and the upper surface of the fixed plate (2) offers second
Sliding slot (10), the inner wall of the second sliding slot (10) is slidably connected, and there are two the second sliding block (11), and two the second sliding blocks (11)
Mutually separate one side is fixedly connected with the opposite face of second sliding slot (10) inner wall respectively by two springs (12), and described second is sliding
The upper surface of block (11) is fixedly connected with the lower surface of the second rotating device (14), and two the second rotating devices (14) pass through the
Hingedly, the top of second rotating device (14) and the lower surface of support plate (17) are slidably connected two pin shafts (15), the branch
The lower surface of fagging (17) is fixedly connected by four hydraulic cylinders (16) with the upper surface of fixed plate (2), and four hydraulic cylinders
(16) four corners of fixed plate (2) upper surface are located at；
The upper surface of the support plate (17) is fixedly connected with the lower surface of protective fence (19), the upper surface of the protective fence (19)
There are two being fixedly connected bracket (20), and the upper surface of two brackets (20) is fixedly connected with the lower surface of shield (21),
The upper surface of the shield (21) is fixedly connected with solar panels (22), the upper surface of the support plate (17) and non-slip mat
(18) lower surface is fixedly connected.
2. a kind of operation platform for constructing on the outside of guardrail according to claim 1, it is characterised in that: described first turn
Dynamic device (4) include first bearing (41), the lower surface of first bearing (41) clamping bottom plate (1), the first bearing
(41) inner surface is socketed with first rotating shaft (42), and the bottom end of the first rotating shaft (42) passes through first bevel gear (44) and screw thread
The top of column (43) is fixedly connected, and the first bevel gear (44) is engaged with driving device (5), the surface of the threaded post (43)
It is threaded with thread barrel (6).
3. a kind of operation platform for constructing on the outside of guardrail according to claim 2, it is characterised in that: the driving dress
Setting (5) includes second bevel gear (51), the second bevel gear (51) and first bevel gear (44) engagement, the second bevel gear
(51) left side is fixedly connected with the right end of the second shaft (52), and the surface of second shaft (52) is socketed with second bearing
(53), the second bearing (53) is connected to the left side of sleeve (3), left end and handle (54) of second shaft (52)
Right side is fixedly connected.
4. a kind of operation platform for constructing on the outside of guardrail according to claim 1, it is characterised in that: described second turn
Dynamic device (14) include two fixed blocks (141), and the lower surface of the fixed block (141) and the upper surface of the second sliding block (11) are solid
The front of fixed connection, the fixed block (141) is hinged by the first pin shaft (142) and the back side of pulley (143), and the cunning of front side
The pulley (143) for taking turns (143) and rear side passes through the second pin shaft (15) hingedly, and the top of the pulley (143) is slidably connected at branch
The lower surface of fagging (17).
5. a kind of operation platform for constructing on the outside of guardrail according to claim 1, it is characterised in that: the bottom plate
(1) upper surface is provided with battery (23), and the battery (23) is located at the right side of fixed plate (2), the battery (23)
Upper surface be provided with switch (24).
6. a kind of operation platform for constructing on the outside of guardrail according to claim 1, it is characterised in that: the solar energy
The output end of plate (22) is electrically connected with the input terminal of inverter (13), output end and battery (23) of the inverter (13)
Input terminal electrical connection, the output end of the battery (23) are electrically connected with the input terminal of switch (24), described to switch the defeated of (24)
Outlet is electrically connected with the input terminal of hydraulic cylinder (16) and electric pushrod (25) respectively, and switchs the model LW5D-16 ten thousand of (24)
It can change-over switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820791291.4U CN208563939U (en) | 2018-05-25 | 2018-05-25 | A kind of operation platform for constructing on the outside of guardrail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820791291.4U CN208563939U (en) | 2018-05-25 | 2018-05-25 | A kind of operation platform for constructing on the outside of guardrail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208563939U true CN208563939U (en) | 2019-03-01 |
Family
ID=65482158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820791291.4U Expired - Fee Related CN208563939U (en) | 2018-05-25 | 2018-05-25 | A kind of operation platform for constructing on the outside of guardrail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208563939U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110447375A (en) * | 2019-09-10 | 2019-11-15 | 颜菁 | A kind of rotary chain saw grass-mowing machine |
-
2018
- 2018-05-25 CN CN201820791291.4U patent/CN208563939U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110447375A (en) * | 2019-09-10 | 2019-11-15 | 颜菁 | A kind of rotary chain saw grass-mowing machine |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190301 |