CN107338702A - A kind of bridge highway pavement tethered sliding formula concrete speading device - Google Patents
A kind of bridge highway pavement tethered sliding formula concrete speading device Download PDFInfo
- Publication number
- CN107338702A CN107338702A CN201710593986.1A CN201710593986A CN107338702A CN 107338702 A CN107338702 A CN 107338702A CN 201710593986 A CN201710593986 A CN 201710593986A CN 107338702 A CN107338702 A CN 107338702A
- Authority
- CN
- China
- Prior art keywords
- storage tank
- agitating shaft
- support base
- tethered sliding
- highway pavement
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
- E01C19/18—Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect
- E01C19/182—Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect solely for depositing
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of bridge highway pavement tethered sliding formula concrete speading device, including support base, support base upper center is connected with storage tank, agitating shaft is provided with inside storage tank, agitating shaft top is connected with driven pulley, driven pulley left end is connected with driving belt, driving belt left end is connected with driving pulley, driving pulley lower end is connected with power transmission shaft, transmission shaft end is connected with rotation gear, limiting plate is connected with the right side of storage tank upper end, spacing hole is connected with the middle part of limiting plate, mobile bar is provided with the middle part of spacing hole, mobile bar left end is connected with roller, mobile bar right-hand member connects wedge, back-moving spring is cased with the middle part of mobile bar between wedge and limiting plate, material guiding tube is connected between storage tank and cast chamber.The present invention so that whole device achieves that the running of whole device while tethered sliding, avoids and sets other power resources, while the blocking for the pipe that also avoids paving, and ensure that what pavement concrete paved is normally carried out.
Description
Technical field
The present invention relates to concrete-bridge equipment technical field, specifically a kind of bridge highway pavement is mixed with tethered sliding formula
Coagulate native lying device.
Background technology
Highway alignment passes through the waters such as rivers, bay, lake, reservoir, feed ditch, or across the big deep valley area of the discrepancy in elevation, or
Across other traffic routes, in order to keep the traffic moving, needs build a bridge.Bustling urban district needs to set to be made up of overpass sometimes
Viaduct.Other hill path line is great because digging subgrade engineering, or because geological structure is unstable, or because protecting landscape, sometimes
Overpass is built, without constructing roadbed.
Highway bridge can also be built jointly with Other Engineering building.Some highway bridges are built jointly with railway bridge, such as wuhan yangtze river bridge
It is exactly combined bridge with yangtze river in nanjing bridge, highway is on upper strata, and railway is in lower floor.Some highway bridges are in the restocking of gate dam top
If turn into bridge lock combined bridge.Oil pipeline or gas pipeline are set up on some highway bridges, turns into the highway of simultaneous fuel feeding feed channel
Bridge.
In the process of construction of bridge highway pavement, we can road pavement carry out concrete laying, so as to strengthen
The resistance to compression mechanical strength on whole road surface, but current concrete laying machinery manufacture is complicated, in paving for whole concrete
During, it would be desirable to using the paving process of whole concrete is met to extra outer power, so as to cause whole device
Cost it is sufficiently expensive, while in paving process, we can frequently encounter the situation that concrete superintends and directs clogging discharging opening, and this is tight
The construction process on road surface, poor practicability are affected again.
The content of the invention
It is an object of the invention to provide a kind of bridge highway pavement tethered sliding formula concrete speading device, to solve
The problem of being proposed in above-mentioned background technology.
To achieve the above object, the present invention provides following technical scheme：
A kind of bridge highway pavement tethered sliding formula concrete speading device, including support base, the support base upper end
Middle part is connected with storage tank, and agitating shaft is provided with inside storage tank, and agitating device, the stirring dress are uniformly connected with the middle part of agitating shaft
Put including swingle, be connected with the outside of the swingle and scrape wallboard, fix bar, the connection of fix bar end are connected with the middle part of swingle
There is paddle, the agitating shaft top is connected with driven pulley, and driven pulley left end is connected with driving belt, driving belt left end
Driving pulley is connected with, driving pulley lower end is connected with power transmission shaft, bearing block, the transmission shaft end are connected with the middle part of power transmission shaft
Rotation gear is connected with, rotation gear lower end is engaged with drive gear, and walking axle, walking axle both ends are connected with the middle part of drive gear
Road wheel is connected with, cast chamber is connected with the right side of the support base upper end, cast intracavitary portion is provided with piston, and piston upper center connects
It is connected to elevating lever, outside is cased with buffer spring in the middle part of elevating lever, and the elevating lever upper end is connected with lifter plate, in lifter plate upper end
Portion is connected with guide rod, and guide rod upper end is connected with SDeflector, is connected with limiting plate on the right side of the storage tank upper end, in limiting plate
Portion is connected with spacing hole, and mobile bar is provided with the middle part of spacing hole, and mobile bar left end is connected with roller, and the contact of roller left end has cam,
The mobile bar right-hand member connects wedge, and back-moving spring is cased with the middle part of the mobile bar between the wedge and limiting plate, described
Material guiding tube is connected between storage tank and cast chamber, the pipe that paves is connected with the downside of the cast chamber right-hand member.
As the further scheme of the present invention：Bail, the support base lower end are connected with the left of the support base upper end
Right side is connected with traction wheel.
As the further scheme of the present invention：It is connected with the middle part of the material guiding tube and draws material check valve, in the middle part of the pipe that paves
It is connected with the check valve that paves.
As the further scheme of the present invention：The limiting plate upper end is connected with L-type bar, and company is fixed in lower end on the right side of L-type bar
It is connected to cast chamber.
As the further scheme of the present invention：The agitating shaft upper center is connected with upper fixed seat, upper fixed seat lower end
Storage tank upper center is fixedly connected on, lower fixed seat is connected with the middle part of the agitating shaft lower end, lower fixed seat lower end, which is fixed, to be connected
It is connected to storage tank center bottom.
As the further scheme of the present invention：Both ends are connected with walker in the middle part of the walking axle, and walker upper end is fixed
It is connected to support base lower end.
As the further scheme of the present invention：The cam is fixedly connected on agitating shaft upper center.
As the further scheme of the present invention：The paddle is uniformly connected on the outside of agitating shaft.
As the further scheme of the present invention：The bearing block right-hand member is fixedly connected on storage tank left end.
As further scheme of the invention：The drive gear and rotation gear are a pair of intermeshing bevel gears.
Compared with prior art, the beneficial effects of the invention are as follows：
A kind of bridge highway pavement tethered sliding formula concrete speading device, it is rational in infrastructure, it is novel in design, pass through
Mutual cooperation between the walking axle and power transmission shaft that are provided with, realizes the rotation to agitating shaft, so that whole device is being led
The running of whole device is achieved that while drawing mobile, avoids and other power resources is set, greatly reduce cost of manufacture,
Simultaneously by provided with elevating lever and cast chamber mutual cooperation, realize the orderly blanking to concrete in the pipe that paves, avoid
The blocking for the pipe that paves, ensure that what pavement concrete paved is normally carried out, it is practical.
Brief description of the drawings
Fig. 1 is a kind of structural representation of bridge highway pavement tethered sliding formula concrete speading device.
Fig. 2 is a kind of structural representation of agitating device in bridge highway pavement tethered sliding formula concrete speading device
Figure.
Fig. 3 is a kind of left view partial structurtes of traction seat in bridge highway pavement tethered sliding formula concrete speading device
Schematic diagram.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than instruction or dark
Show that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, thus it is it is not intended that right
The limitation of the present invention.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that instruction or hint phase
To importance or the implicit quantity for indicating indicated technical characteristic.Thus, the feature for defining " first ", " second " etc. can
To express or implicitly include one or more this feature.In the description of the invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Refering to Fig. 1~3, in the embodiment of the present invention, a kind of bridge highway pavement tethered sliding formula concrete speading device,
Including support base 1, bail 6 is connected with the left of the upper end of support base 1, for realizing the connection with traction locomotive, so as to
The movement to whole device is realized, traction wheel 34, the upper center of support base 1 are connected with the right side of the lower end of support base 1
Storage tank 7 is connected with, the concrete material on road surface is laid for storing, the upper end of storage tank 7 is connected with charging aperture (figure
In be not drawn into), the inside of storage tank 7 is provided with agitating shaft 9, and the upper center of agitating shaft 9 is connected with upper fixed seat 14, for realizing
The fixation to the upper end of agitating shaft 9 is spacing, and the lower end of upper fixed seat 14 is fixedly connected on the upper center of storage tank 7, the agitating shaft 9
Lower fixed seat 2 is connected with the middle part of lower end, for realizing that the fixation to the lower end of agitating shaft 9 is spacing, the lower end of lower fixed seat 2, which is fixed, to be connected
The center bottom of storage tank 7 is connected to, the middle part of agitating shaft 9 is uniformly connected with agitating device 12, and the agitating device 12 includes rotation
Bull stick 123, the outside of swingle 123, which is connected with, scrapes wallboard 124, for realizing the scraping to the inwall of storage tank 7, avoids mixing
Coagulate native raw material and be attached to the inwall of storage tank 7, the middle part of swingle 123 is connected with fix bar 121, and the end of fix bar 121, which is connected with, to be stirred
Leaf 122 is mixed, the paddle 122 is uniformly connected to the outside of agitating shaft 9, and the top of agitating shaft 9 is connected with driven pulley 15, from
The left end of movable belt pulley 15 is connected with driving belt 13, and the left end of driving belt 13 is connected with driving pulley 11, and the lower end of driving pulley 11 connects
Power transmission shaft 8 is connected to, the middle part of power transmission shaft 8 is connected with bearing block 10, spacing for the rotation progress to power transmission shaft 8, while also ensures
Drive gear 4 to engage with rotation the accurate of gear 3, the right-hand member of bearing block 10 is fixedly connected on the left end of storage tank 7, the biography
The end of moving axis 8 is connected with rotation gear 3, and rotation gear 3 lower end is engaged with drive gear 4, the drive gear 4 and rotation gear
3 be a pair of intermeshing bevel gears, and the middle part of drive gear 4 is connected with walking axle 37, and the walking axle 37 middle part both ends are connected with
Walker 36, for realizing the support limit rotated to walking axle 37, the upper end of walker 36 is fixedly connected under support base 1
End, walking axle 37 both ends are connected with road wheel 5, cast chamber 30 are connected with the right side of the upper end of support base 1, is poured into a mould in chamber 30
Portion is provided with piston 29, and the upper center of piston 29 is connected with elevating lever 28, and the middle part of elevating lever 28 outside is cased with buffer spring 27, is used for
The reset up moved to piston 29 is realized, the upper end of elevating lever 28 is connected with lifter plate 26, the upper center of lifter plate 26
Guide rod 25 is connected with, the upper end of guide rod 25 is connected with SDeflector 24, limiting plate 18 is connected with the right side of the upper end of storage tank 4,
State the upper end of limiting plate 18 and be connected with L-type bar 20, the right side lower end of L-type bar 20, which is fixedly connected on, pours into a mould chamber 30, in the limiting plate 18
Portion is connected with spacing hole 19, for mobile bar 22 move left and right carry out it is spacing, so as to ensure that the level of movable plate 22 is straight
Line moves, and the middle part of spacing hole 19 is provided with mobile bar 22, and the left end of mobile bar 22 is connected with roller 17, and the contact of the left end of roller 17 has cam
16, the cam 16 is fixedly connected on the upper center of agitating shaft 9, and the right-hand member of mobile bar 22 is connected with wedge 21, the wedge
The middle part of mobile bar 22 between shape block 21 and limiting plate 18 is cased with back-moving spring 23, for realizing the limit moved to mobile bar 22
Position, material guiding tube 35 is connected between the storage tank 7 and cast chamber 30, the pipe that paves is connected with the downside of the cast right-hand member of chamber 30
31, the middle part of material guiding tube 35, which is connected with, draws material check valve 33, so that the concrete in storage tank 7 can only be from material guiding tube 35
Enter in cast chamber 30, the middle part of pipe 31 that paves is connected with the check valve 32 that paves, so that the concrete in cast chamber 30
It can only be exported from the pipe 31 that paves.
A kind of bridge highway pavement tethered sliding formula concrete speading device, in use, will be whole by bail 6
Individual device is connected on traction locomotive, and traction locomotive drives whole device to move afterwards, in moving process, road wheel 5
Drive walking axle 37 to be rotated, then by the effect of drive gear 4 and rotation gear 3, drive power transmission shaft 8 to be rotated,
Afterwards by the gearing of driven pulley 11 and driving pulley 15, drive agitating shaft 9 to be rotated, rotated in agitating shaft 9
Cheng Zhong, on the one hand agitating device 12 is driven to be rotated so that the concrete in storage tank 7 can stir, so as to
It ensure that material guiding tube 35 sucks the quality of concrete, on the other hand, the moving cam 16 of agitating shaft band 9 is rotated so that mobile bar
22 in the presence of back-moving spring 23 left and right move back and forth so that the synchronous effect of wedge 21 move, so as to pass through buffering
The effect of spring 27 so that elevating lever 28 moves up and down with piston 29 along cast chamber 30, so as to by the coagulation in storage tank 7
Soil is drawn onto in cast chamber 30, is then paved by the pipe 31 that paves, simple to operate, and reliability is high.The present invention, it is rational in infrastructure,
Modern design, by provided with walking axle 37 and power transmission shaft 8 between mutual cooperation, realize the rotation to agitating shaft 9, so as to
So that whole device achieves that the running of whole device while tethered sliding, avoid and other power resources are set, greatly
It is big to reduce cost of manufacture, at the same by provided with elevating lever 28 and cast chamber 30 mutual cooperation, realize to the pipe 31 that paves
The orderly blanking of middle concrete, the blocking for the pipe 31 that avoids paving, it ensure that what pavement concrete paved is normally carried out, practicality
By force.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (7)
1. a kind of bridge highway pavement tethered sliding formula concrete speading device, including support base (1), it is characterised in that institute
State and bail (6) is connected with the left of support base (1) upper end, traction wheel (34) is connected with the right side of support base (1) lower end, it is described
Support base (1) upper center is connected with storage tank (7), agitating shaft (9) is provided with inside storage tank (7), agitating shaft (9) middle part is uniformly
Agitating device (12) is connected with, the agitating device (12) includes swingle (123), is connected with the outside of the swingle (123)
Wallboard (124) is scraped, is connected with fix bar (121) in the middle part of swingle (123), fix bar (121) end is connected with paddle
(122), agitating shaft (9) top is connected with driven pulley (15), and driven pulley (15) left end is connected with driving belt (13),
Driving belt (13) left end is connected with driving pulley (11), and driving pulley (11) lower end is connected with power transmission shaft (8), power transmission shaft (8)
Middle part is connected with bearing block (10), and power transmission shaft (8) end is connected with rotation gear (3), and rotation gear (3) lower end is engaged with
Drive gear (4), drive gear (4) middle part are connected with walking axle (37), and walking axle (37) both ends are connected with road wheel (5), institute
State and cast chamber (30) is connected with the right side of support base (1) upper end, pour into a mould and piston (29) is provided with inside chamber (30), in piston (29) upper end
Portion is connected with elevating lever (28), and outside is cased with buffer spring (27), elevating lever (28) the upper end connection in the middle part of elevating lever (28)
There is lifter plate (26), lifter plate (26) upper center is connected with guide rod (25), and guide rod (25) upper end is connected with SDeflector
(24) limiting plate (18), is connected with the right side of storage tank (4) upper end, limiting plate (18) upper end is connected with L-type bar (20),
Lower end is fixedly connected on cast chamber (30) on the right side of L-type bar (20), and spacing hole (19) is connected with the middle part of the limiting plate (18), spacing
Mobile bar (22) is provided with the middle part of hole (19), mobile bar (22) left end is connected with roller (17), and the contact of roller (17) left end has cam
(16), mobile bar (22) the right-hand member connection wedge (21), the mobile bar between the wedge (21) and limiting plate (18)
(22) middle part is cased with back-moving spring (23), and material guiding tube (35) is connected between the storage tank (7) and cast chamber (30), described to pour
The pipe that paves (31) is connected with the downside of note chamber (30) right-hand member, is connected with the middle part of the material guiding tube (35) and draws material check valve (33), it is described
Pave and be connected with the check valve that paves (32) in the middle part of pipe (31).
2. a kind of bridge highway pavement according to claim 1 tethered sliding formula concrete speading device, its feature exist
In agitating shaft (9) upper center is connected with upper fixed seat (14), and upper fixed seat (14) lower end is fixedly connected on storage tank
(7) upper center, agitating shaft (9) the lower end middle part are connected with lower fixed seat (2), and lower fixed seat (2) lower end is fixedly connected on
Storage tank (7) center bottom.
3. a kind of bridge highway pavement according to claim 1 tethered sliding formula concrete speading device, its feature exist
In both ends are connected with walker (36) in the middle part of the walking axle (37), and walker (36) upper end is fixedly connected under support base (1)
End.
4. a kind of bridge highway pavement according to claim 1 tethered sliding formula concrete speading device, its feature exist
In the cam (16) is fixedly connected on agitating shaft (9) upper center.
5. a kind of bridge highway pavement according to claim 1 tethered sliding formula concrete speading device, its feature exist
In the paddle (122) is uniformly connected on the outside of agitating shaft (9).
6. a kind of bridge highway pavement according to claim 1 tethered sliding formula concrete speading device, its feature exist
In bearing block (10) right-hand member is fixedly connected on storage tank (7) left end.
7. a kind of bridge highway pavement according to claim 1 tethered sliding formula concrete speading device, its feature exist
In the drive gear (4) and rotation gear (3) are a pair of intermeshing bevel gears.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710593986.1A CN107338702A (en) | 2017-07-20 | 2017-07-20 | A kind of bridge highway pavement tethered sliding formula concrete speading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710593986.1A CN107338702A (en) | 2017-07-20 | 2017-07-20 | A kind of bridge highway pavement tethered sliding formula concrete speading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107338702A true CN107338702A (en) | 2017-11-10 |
Family
ID=60216026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710593986.1A Withdrawn CN107338702A (en) | 2017-07-20 | 2017-07-20 | A kind of bridge highway pavement tethered sliding formula concrete speading device |
Country Status (1)
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| CN (1) | CN107338702A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107964850A (en) * | 2017-11-27 | 2018-04-27 | 李厚兵 | A kind of anti-standing conveying arrangement of municipal road construction bituminous concrete |
| CN108103902A (en) * | 2017-12-21 | 2018-06-01 | 郑州国知网络技术有限公司 | A kind of cement road construction spreading out device |
| CN108914752A (en) * | 2018-07-20 | 2018-11-30 | 陈婷 | A kind of road and bridge pavement construction health cloth laying apparatus |
| CN110029581A (en) * | 2019-04-17 | 2019-07-19 | 孙小燕 | A kind of bridge construction cement placing installation |
| CN110106766A (en) * | 2019-06-12 | 2019-08-09 | 嘉兴勤慎智能技术有限公司 | A kind of intelligence road construction device |
| CN110747966A (en) * | 2019-11-08 | 2020-02-04 | 九江职业技术学院 | Concrete drain pipe detects and mending leakage robot |
| CN110777620A (en) * | 2019-11-13 | 2020-02-11 | 邢台路桥建设总公司 | Highway engineering asphalt paving system |
| CN111119008A (en) * | 2019-12-19 | 2020-05-08 | 吴满钢 | Road surface router |
| CN112647399A (en) * | 2020-12-23 | 2021-04-13 | 古冉 | Efficient glue rapid repairing equipment for roads and bridges |
| CN113374265A (en) * | 2021-05-02 | 2021-09-10 | 许立霞 | A concrete placement guider for restricted space |
| CN113519283A (en) * | 2021-07-08 | 2021-10-22 | 广西壮族自治区畜牧研究所 | Straw cutter |
| CN114232418A (en) * | 2021-12-08 | 2022-03-25 | 北京华创空港工程有限公司 | Asphalt paving device for airport pavement construction |
| CN114960361A (en) * | 2022-05-11 | 2022-08-30 | 河南洹河园林建设工程有限公司 | Municipal garden luminous pavement paving device and using method thereof |
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2017
- 2017-07-20 CN CN201710593986.1A patent/CN107338702A/en not_active Withdrawn
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107964850A (en) * | 2017-11-27 | 2018-04-27 | 李厚兵 | A kind of anti-standing conveying arrangement of municipal road construction bituminous concrete |
| CN108103902A (en) * | 2017-12-21 | 2018-06-01 | 郑州国知网络技术有限公司 | A kind of cement road construction spreading out device |
| CN108914752A (en) * | 2018-07-20 | 2018-11-30 | 陈婷 | A kind of road and bridge pavement construction health cloth laying apparatus |
| CN110029581A (en) * | 2019-04-17 | 2019-07-19 | 孙小燕 | A kind of bridge construction cement placing installation |
| CN110106766B (en) * | 2019-06-12 | 2021-08-10 | 嘉兴勤慎智能技术有限公司 | Intelligent road construction device |
| CN110106766A (en) * | 2019-06-12 | 2019-08-09 | 嘉兴勤慎智能技术有限公司 | A kind of intelligence road construction device |
| CN110747966A (en) * | 2019-11-08 | 2020-02-04 | 九江职业技术学院 | Concrete drain pipe detects and mending leakage robot |
| CN110777620A (en) * | 2019-11-13 | 2020-02-11 | 邢台路桥建设总公司 | Highway engineering asphalt paving system |
| CN111119008A (en) * | 2019-12-19 | 2020-05-08 | 吴满钢 | Road surface router |
| CN112647399A (en) * | 2020-12-23 | 2021-04-13 | 古冉 | Efficient glue rapid repairing equipment for roads and bridges |
| CN113374265A (en) * | 2021-05-02 | 2021-09-10 | 许立霞 | A concrete placement guider for restricted space |
| CN113519283A (en) * | 2021-07-08 | 2021-10-22 | 广西壮族自治区畜牧研究所 | Straw cutter |
| CN114232418A (en) * | 2021-12-08 | 2022-03-25 | 北京华创空港工程有限公司 | Asphalt paving device for airport pavement construction |
| CN114960361A (en) * | 2022-05-11 | 2022-08-30 | 河南洹河园林建设工程有限公司 | Municipal garden luminous pavement paving device and using method thereof |
| CN114960361B (en) * | 2022-05-11 | 2024-05-14 | 河南洹河建设工程有限公司 | Municipal garden luminous pavement paving device and application method thereof |
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Application publication date: 20171110 |