CN206666999U - A kind of pitch sprinkling car - Google Patents
A kind of pitch sprinkling car Download PDFInfo
- Publication number
- CN206666999U CN206666999U CN201720266562.XU CN201720266562U CN206666999U CN 206666999 U CN206666999 U CN 206666999U CN 201720266562 U CN201720266562 U CN 201720266562U CN 206666999 U CN206666999 U CN 206666999U
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- China
- Prior art keywords
- spread
- pitch
- conveyance conduit
- shower nozzle
- rod
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of pitch sprinkling car, including car body, asphalt tank and the spread bar being detachably connected with car body, equidistantly distributed has multiple spread shower nozzles along its length on spread bar, spread shower nozzle is connected by conveyance conduit with tank body, spread bar includes the body of rod that multi-joint telescoping is set, and spread shower nozzle is detachably arranged on the body of rod；It is provided with the heater for pitch in heated transportation pipeline on conveyance conduit, the heating power of heater and the length of conveyance conduit are proportionate setting；Liquid bitumen is transported on the spread shower nozzle on spread bar by the asphalt tank on car body by conveyance conduit, the spread bar of scalable setting can change the spread width of pitch sprinkling car, and the spread shower nozzle detachably set can be pulled down in stretching, extension or contraction spread bar, after spread bar extends, conveyance conduit is elongated, and the heating power on the conveyance conduit becomes big, avoids pitch from cooling during conveying, mobility is reduced, obtains pitch sprinkling car spread uneven.
Description
Technical field
Municipal maintenance of surface equipment technical field is the utility model is related to, more specifically, it relates to a kind of pitch sprinkling
Car.
Background technology
With the rapid development of highway in China, country increasingly payes attention to the preventive maintenance of road.Municipal maintenance of surface
Engineering in general sprays the liquid asphaltic materials such as a coating emulsified asphalt or bitumen regenerant using pitch sprinkling car on bituminous paving
Reach sealing road surface, the preventive maintenance of regeneration road top layer aged asphalt layer has been applied.But this mode institute band
The defects of coming is the anti-slide performance for reducing road surface, so as to reduce road traffic safety coefficient.So in liquid asphaltic material
A certain proportion of fine sand is filled, the anti-slide performance of road can be greatly improved in road surface in sandblasting.
A kind of pitch sprinkling equipped with double stirrer as disclosed in the Chinese patent that patent announcement number is CN202187270U
Car, this pitch sprinkling car include car body and tank body, and dog-house is provided with the top of tank body, and the both ends of dog-house are different provided with height
Two agitators, fine sand fall into liquid asphaltic material from dog-house, and agitator stirs in tank body internal rotation, allow fine sand equably and
Enter pitch, it is uneven to solve the problems, such as that liquid asphaltic material is precipitated and mixed in tank body with fine sand mixture.
Liquid bitumen is sent to and is fixed on spread bar by the tank body of the pitch sprinkling car in above-mentioned patent by conveyance conduit
Spread shower nozzle carry out spread, but the length of spread bar can not be adjusted, if after spread bar lengthens, tank body to spread shower nozzle away from
From difference, cause to be transported to the asphalt temperature of spread shower nozzle by conveyance conduit and viscosity produces change, make pitch sprinkling
It is uneven.
Utility model content
After can not adjusting for the spread pole length of existing pitch sprinkling car and extend spread bar, pitch sprinkling is uneven
Technical problem, the utility model provide a kind of pitch sprinkling car, by setting telescopic spread bar on car body, and conveyed
The pipeline of pitch sets heater to solve the above problems.
To achieve the above object, the utility model provides following technical scheme：
A kind of pitch sprinkling car, including car body, asphalt tank and the spread bar being detachably connected with the car body, it is described to spill
Equidistantly distributed has multiple spread shower nozzles along its length on cloth bar, and the spread shower nozzle passes through conveyance conduit and the pitch
Tank is connected, and the spread bar includes the body of rod that multi-joint telescoping is set, and the spread shower nozzle is detachably arranged on the body of rod；
The heater for heating pitch in the conveyance conduit, the heater are provided with the conveyance conduit
The length of heating power and the conveyance conduit be proportionate setting.
Liquid bitumen is transported on spread bar by Pass through above-mentioned technical proposal, the asphalt tank on car body by conveyance conduit
In spread shower nozzle, the spread bar of scalable setting can change the spread width of pitch sprinkling car, and the spread spray detachably set
Head can be pulled down in stretching, extension or contraction spread bar, and after spread bar extends, heater is used for the conveyance conduit for heating elongation, conveys
Pipeline is longer, and the heating power on the conveyance conduit is bigger, avoids pitch from cooling during conveying, reduces mobility, makes
Pitch sprinkling car spread obtains uneven.
Further, the heater includes,
Controller；
Power amplifier module, control and connect with the controller, receive and respond to the control signal of the controller, there is provided defeated
Go out power；
Heating member, the conveying pipeline inner wall is built in, is electrically connected with the power amplifier module, driven by the power amplifier module
Heat the pitch in the conveyance conduit.
Pass through above-mentioned technical proposal, after conveyance conduit is elongated, controller output carries high-power control signal, power amplifier mould
Block increases the power output for being supplied to heating member after receiving control signal, allows heating member to keep the work of pitch in conveyance conduit
Temperature.
Further, the spread shower nozzle is provided with temperature sensor, is connected with the controller signals, described for detecting
The temperature of spread shower nozzle, and a temperature signal is exported to the controller.
Pass through above-mentioned technical proposal, temperature sensor detection spread shower nozzle spray the temperature of pitch, export a temperature signal
To controller, controller contrasts set temperature value again after receiving temperature signal；If asphalt temperature is higher than design temperature, controller is then
Control power amplifier module to reduce power output, reduce the caloric value of heating member；If asphalt temperature is less than design temperature, controller is then controlled
Power amplifier module processed improves power output, improves the caloric value of heating member, realizes the closed-loop control of asphalt temperature.
Further, spliced eye is provided with along its length on the body of rod, the body of rod away from the car body is inserted
It is connected in the body of rod of the car body, is equidistantly evenly distributed with multiple jacks on the body of rod along its length,
Fixing bolt is plugged with the jack.
Pass through above-mentioned technical proposal, multiple body of rod grafting are set, and when spread bar stretches, extract the body of rod for being plugged on inside out,
Fixing bolt is plugged in jack again, fixing bolt can fix the spread length of spread bar；When spread bar shrinks, pull down solid
Determine bolt, press quarter butt body, it is easy to operate.
Further, the equidistantly distributed on the body of rod along its length has spread seat, and the spread shower nozzle passes through
Clamping ring is connected on the spread seat, and the spread seat is spaced apart with the jack.
Pass through above-mentioned technical proposal, spread shower nozzle are connected on spread seat by clamping ring, when spread bar stretches or shrinks
When, spread shower nozzle is dismantled, avoids spread shower nozzle from being stuck in the body of rod.
Further, blowing component is removably connected with the car body, the blowing component, which is used to cool down, to be sprayed at
Pitch on road surface.
Pass through above-mentioned technical proposal, after asphalt distribution can natural cooling, because the environment at scene is complex, between part
Pitch cooling velocity can be inconsistent, blowing component can uniform pitch cooling velocity, with making asphalt paving evenly.
Further, the blowing component includes,
Blower fan；
Ventilation shaft, connected with the blower fan, for conveying wind caused by the blower fan；
Blowing head, is hinged on the spread bar, is connected with the ventilation shaft, has been sprayed at for cooling down on road surface
Pitch.
Pass through above-mentioned technical proposal, blowing head produce wind-force and by logical towards pitch on road surface, blower fan is just sprayed at
Wind-force is passed to blowing head by wind pipeline, and blowing head blowing cold air makes the good pitch of spread while cooled down, and improves the uniform of pitch
Degree.
Further, relative screw rod is hinged between the blowing head and the spread bar, is connected between the screw rod
Adjusting nut.
Pass through above-mentioned technical proposal, turn adjusting nut can change the distance between screw rod, so as to change blowing for blowing head
Wind angle.
Further, the car body be removably connected with the spread bar be used for clamp the conveyance conduit with it is described
The clamping element of ventilation shaft.
Pass through above-mentioned technical proposal, clamping element are used to store the conveyance conduit and ventilation shaft on car body, avoided long
Pipeline falls on the ground when spread bar shrinks.
Further, placement pole is fixedly connected with along the spread pole length direction on the car body, the placement pole is used
In the untapped spread shower nozzle of placement and the blowing head.
Pass through above-mentioned technical proposal, when spread bar shrinks, the spread shower nozzle on the body of rod of retraction can be split with blowing head
Descend and hang in placement pole, next time is removed on the body of rod from placement pole again when using, convenient fast without being additionally carried out storing
It is prompt.
Compared with prior art, the beneficial effects of the utility model are：
1st, by setting the body of rod of multi-joint telescoping, spread shower nozzle is detachably arranged on the body of rod, set on conveyance conduit
Heating component is put, the spread bar of scalable setting can change the spread width of pitch sprinkling car, and the spread spray detachably set
Head can be pulled down in stretching, extension or contraction spread bar, after spread bar extends, the conveyance conduit of heating devices heat elongation, and conveyance conduit
Longer, the heating power on the conveyance conduit is bigger, avoids pitch from cooling during conveying, reduces mobility, makes pitch
Distribution vehicle spread obtains uneven；
2nd, by setting the temperature sensor being connected with controller signals, temperature sensor detection spread on spread shower nozzle
Shower nozzle sprays the temperature of pitch, exports a temperature signal and contrasts design temperature again after receiving temperature signal to controller, controller
Value；If asphalt temperature is higher than design temperature, controller then controls power amplifier module to reduce power output, reduces the heating of heating member
Amount；If asphalt temperature is less than design temperature, controller then controls power amplifier module to improve power output, improves the heating of heating member
Amount；
3rd, by setting blowing component on spread seat, blowing component is used to cool down the pitch being sprayed on road surface, drip
Meeting natural cooling after green grass or young crops sprinkling, because the environment at scene is complex, the pitch cooling velocity between part can be inconsistent, blowing group
Part can uniform pitch cooling velocity, with making asphalt paving evenly.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the utility model embodiment one；
Fig. 2 is the enlarged diagram of the body of rod of the utility model embodiment one；
Fig. 3 is the partial structural diagram of the utility model embodiment one；
Fig. 4 is the system block diagram of the heating component of the utility model embodiment one；
Fig. 5 is the system block diagram of the closed-loop control of the utility model embodiment one；
Fig. 6 is the left view partial structural diagram of the utility model embodiment two；
Fig. 7 is Fig. 6 A portions enlarged diagram.
Reference：1st, car body；2nd, asphalt tank；3rd, spread bar；4th, the body of rod；5th, jack；6th, fixing bolt；7th, spread seat；
8th, conveyance conduit；9th, spread shower nozzle；10th, buckling groove；11st, clamping ring；12nd, heater；13rd, controller；14th, power amplifier module；
15th, heating member；16th, temperature sensor；17th, blowing component；18th, blower fan；19th, ventilation shaft；20th, blowing head；21st, screw rod；22、
Adjusting nut；23rd, clamping element；24th, placement pole.
Embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
Embodiment one
A kind of pitch sprinkling car, as shown in figure 1, including car body 1, it is horizontal on car body 1 to have asphalt tank 2, the tail end bolt of car body 1
The spread bar 3 laterally set is connected with, the length direction of spread bar 3 is vertical with the length direction of car body 1.As shown in figure 3, spread
Equidistantly distributed has multiple spread shower nozzles 9 along its length on bar 3, and each spread shower nozzle 9 passes through a conveyance conduit 8 and drip
Blue or green tank 2 connects.Pitch sprinkling car is during traveling, and spread shower nozzle 9 is to the road surface spread liquid bitumen after car body 1.
With reference to figure 2, spread bar 3 includes the body of rod 4 that multi-joint telescoping is set, and grafting is provided with along its length in the body of rod 4
Hole, the body of rod 4 away from car body 1 are plugged in the body of rod 4 of car body 1, and in actual fabrication, the body of rod 4 can use square hollow section steel.Bar
Multiple jacks 5 are equidistantly evenly distributed with body 4 along its length, fixing bolt 6 is plugged with jack 5.Multiple bodies of rod 4 are inserted
Setting is connect, when spread bar 3 stretches, extracts the body of rod 4 for being plugged on inside out, then fixing bolt 6 is plugged in jack 5, fixed spiral shell
Bolt 6 can fix the spread length of spread bar 3；When spread bar 3 shrinks, fixing bolt 6, pressure quarter butt body 4, operation side are pulled down
Just it is quick.Equidistantly distributed on the body of rod 4 along its length has the spread seat 7 of arc, and the periphery of spread seat 7 is provided with clamping
Groove 10, spread shower nozzle 9 are connected in buckling groove 10 by arc clamping ring 11, and spread seat 7 is spaced apart with jack 5.Spread is sprayed
First 9 are connected on spread seat 7 by clamping ring 11, when spread bar 3 stretches or shunk, dismounting spread shower nozzle 9, avoid spread from spraying
First 9 are stuck in the body of rod 4.
The heater 12 for pitch in heated transportation pipeline 8, the heating of heater 12 are provided with conveyance conduit 8
The length of power and conveyance conduit 8 is proportionate setting.As shown in figure 4, heater 12 includes controller 13, power amplifier module
14, control and connect with controller 13, receive and respond to the control signal of controller 13, there is provided power output；Heating member 15, and
It is built in inside conveyance conduit 8, is electrically connected with power amplifier module 14, the pitch in heated transportation pipeline 8 is driven by power amplifier module 14,
Heating member 15 is the METAL HEATING PROCESS piece for being embedded in the inwall of conveyance conduit 8.After spread bar 3 extends, heater 12 is used to heat
The conveyance conduit 8 of elongation, conveyance conduit 8 is longer, and the heating power on the conveyance conduit 8 is bigger, avoids pitch in the mistake of conveying
Cool in journey, reduce mobility, obtain pitch sprinkling car spread uneven.After conveyance conduit 8 is elongated, the output of controller 13 carries
High-power control signal, power amplifier module 14 increase the power output for being supplied to heating member 15 after receiving control signal, allow and add
Warmware 15 keeps the operating temperature of pitch in conveyance conduit 8.In some other embodiment, as shown in figure 5, on spread shower nozzle 9
Provided with temperature sensor 16, temperature sensor 16 is connected with the signal of controller 13, and temperature sensor 16 is used to detect spread shower nozzle 9
Temperature, and export a temperature signal to controller 13.Temperature sensor 16 detects the temperature that spread shower nozzle 9 sprays pitch, defeated
Go out a temperature signal and contrast set temperature value again after receiving temperature signal to controller 13, controller 13；If asphalt temperature is higher than
Design temperature, controller 13 then control power amplifier module 14 to reduce power output, reduce the caloric value of heating member 15；If asphalt temperature
Less than design temperature, controller 13 then controls power amplifier module 14 to improve power output, improves the caloric value of heating member 15, realizes drip
The closed-loop control of blue or green temperature.
When pitch sprinkling car works, asphalt tank 2 exports liquid bitumen, spread shower nozzle by conveyance conduit 8 to spread shower nozzle 9
9 are buckled in the spread seat 7 on spread bar 3 by clamping ring 11.When stretching spread bar 3, the body of rod 4 of contraction is pulled out, then will be fixed
Bolt 6 inserts fixed core 4 in jack 5, and untapped spread shower nozzle 9 is snapped onto on the spread seat 7 of the body of rod 4.With conveying
The stretching of pipeline 8, employee's adjustment control device 13, the output control signal of controller 13, power amplifier module 14 receive and respond to control
Signal allows heating member 15 to heat output channel to improve power output to heating member 15；If it is provided with temperature on spread shower nozzle 9
Sensor 16, temperature sensor 16 detect the temperature that spread shower nozzle 9 sprays pitch, export a temperature signal to controller 13, control
Device 13 processed contrasts set temperature value again after receiving temperature signal；If asphalt temperature is higher than design temperature, controller 13 then controls work(
Amplification module 14 reduces power output, reduces the caloric value of heating member 15；If asphalt temperature is less than design temperature, controller 13 is then controlled
Power amplifier module 14 processed improves power output, improves the caloric value of heating member 15, realizes the closed-loop control of asphalt temperature.
Embodiment two
A kind of pitch sprinkling car, as shown in Figures 6 and 7, the difference with embodiment one are, detachably connect on spread seat 7
Blowing component 17 is connected to, blowing component 17 is used to cool down the pitch being sprayed on road surface.Meeting natural cooling after asphalt distribution, by
Environment in scene is complex, and the pitch cooling velocity between part can inconsistent, dry component 17 can uniform pitch cooling
Speed, with making asphalt paving evenly.
Blowing component 17 includes blower fan 18, and blower fan 18 is communicated with blowing first 20 by ventilation shaft 19, and blowing first 20 is also led to
Cross clamping ring 11 to snap onto on spread bar 3, and positioned at the lower section of spread seat 7, be hinged between blowing first 20 and spread bar 3 relative
Screw rod 21, adjusting nut 22 is connected between screw rod 21, and the both ends of adjusting nut 22 along its length are provided with and are adapted to screw rod 21
Screw thread, the hand of thread spiral at both ends can make screw rod 21 closer or far from turn regulation spiral shell on the contrary, turn adjusting nut 22
Mother 22 can change the distance between screw rod 21, so as to change the blowing angle of blowing first 20.The air outlet of blowing first 20 is towards just
Firm pitch of the spread on road surface, blower fan 18 produce wind-force and wind-force are passed into blowing first 20, blowing by ventilation shaft 19
First 20 blowing cold air makes the good pitch of spread while cooled down, and improves the uniformity of pitch.
Car body 1 is welded with the clamping element 23 for clamping conveyance conduit 8 and ventilation shaft 19, and clamping element 23 can be pricked with metal
Band, the conveyance conduit 8 and ventilation shaft 19 that clamping element 23 is used to store on car body 1, avoids long pipeline from being shunk in spread bar 3
When fall on the ground.Placement pole 24 is welded with along the length direction of spread bar 3 on car body 1, placement pole 24 is untapped for placing
Spread shower nozzle 9 and blowing first 20.When spread bar 3 shrinks, the spread shower nozzle 9 on the body of rod 4 of retraction can be split with blowing first 20
To descend and hang in placement pole 24, next time removes on the body of rod 4 from placement pole 24 again when using, without being additionally carried out storing,
It is convenient and swift.
When pitch sprinkling car works, cooling is blowed in the blowing good pitch of first 20 pairs of spreads, and turn adjusting nut 22 can
To change blowing first 20 and the angle of spread bar 3, that is, change blowing first 20 and the angle on ground, so as to control pitch good from spread
To the time for receiving cooling；Clamping element 23 can store conveyance conduit 8 and ventilation shaft 19 on car body 1, avoid long pipeline
Fall on the ground when spread bar 3 shrinks；After spread bar 3 shrinks, pull down spread shower nozzle 9 and blowing first 20 and hang placement pole 24
On, until removed again from placement pole 24 on the body of rod 4 when using next time, it is convenient and swift without being additionally carried out storing.
Described above is only preferred embodiment of the present utility model, and the scope of protection of the utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under the utility model thinking belong to the scope of protection of the utility model.It should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (10)
1. a kind of pitch sprinkling car, including car body（1）, asphalt tank（2）And with the car body（1）The spread bar being detachably connected
（3）, the spread bar（3）On along its length equidistantly distributed have multiple spread shower nozzles（9）, the spread shower nozzle（9）It is logical
Cross conveyance conduit（8）With the asphalt tank（2）It is connected, it is characterised in that the spread bar（3）Set including multi-joint telescoping
The body of rod（4）, the spread shower nozzle（9）It is detachably arranged at the body of rod（4）On；
The conveyance conduit（8）On be provided with for heating the conveyance conduit（8）The heater of interior pitch（12）, it is described to add
Thermal（12）Heating power and the conveyance conduit（8）Length be proportionate setting.
2. pitch sprinkling car according to claim 1, it is characterised in that the heater（12）Including,
Controller（13）；
Power amplifier module（14）, with the controller（13）Control connection, receives and responds to the controller（13）Control letter
Number, there is provided power output；
Heating member（15）, it is built in the conveyance conduit（8）Inwall, with the power amplifier module（14）Electrical connection, by the power amplifier
Module（14）The conveyance conduit is heated in driving（8）Interior pitch.
3. pitch sprinkling car according to claim 2, it is characterised in that the spread shower nozzle（9）Provided with temperature sensor
（16）, with the controller（13）Signal connects, the temperature sensor（16）For detecting the spread shower nozzle（9）Temperature
Degree, and a temperature signal is exported to the controller（13）.
4. pitch sprinkling car according to claim 3, it is characterised in that the body of rod（4）On set along its length
There is spliced eye, away from the car body（1）The body of rod（4）It is plugged on close to the car body（1）The body of rod（4）It is interior, institute
State the body of rod（4）On be equidistantly evenly distributed with multiple jacks along its length（5）, the jack（5）On be plugged with fixed spiral shell
Bolt（6）.
5. pitch sprinkling car according to claim 4, it is characterised in that the body of rod（4）On along its length etc.
Spread seat is distributed with spacing（7）, the spread shower nozzle（9）Pass through clamping ring（11）It is connected to the spread seat（7）On, it is described to spill
Cloth seat（7）With the jack（5）It is spaced apart.
6. pitch sprinkling car according to claim 1, it is characterised in that the car body（1）On be removably connected with blowing
Component（17）, the blowing component（17）For cooling down the pitch being sprayed on road surface.
7. pitch sprinkling car according to claim 6, it is characterised in that the blowing component（17）Including,
Blower fan（18）；
Ventilation shaft（19）, with the blower fan（18）Connection, for conveying the blower fan（18）Caused wind；
Blowing head（20）, it is hinged on the spread bar（3）On, with the ventilation shaft（19）Connection, it has been sprayed at for cooling down
Pitch on road surface.
8. pitch sprinkling car according to claim 7, it is characterised in that the blowing head（20）With the spread bar（3）
On be hinged with relative screw rod（21）, the screw rod（21）Between be connected with adjusting nut（22）.
9. pitch sprinkling car according to claim 8, it is characterised in that the car body（1）With the spread bar（3）On can
Dismantling connection has for clamping the conveyance conduit（8）With the ventilation shaft（19）Clamping element（23）.
10. pitch sprinkling car according to claim 9, it is characterised in that the car body（1）On along the spread bar（3）
Length direction is fixedly connected with placement pole（24）, the placement pole（24）For placing the untapped spread shower nozzle（9）With
The blowing head（20）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720266562.XU CN206666999U (en) | 2017-03-17 | 2017-03-17 | A kind of pitch sprinkling car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720266562.XU CN206666999U (en) | 2017-03-17 | 2017-03-17 | A kind of pitch sprinkling car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206666999U true CN206666999U (en) | 2017-11-24 |
Family
ID=60377992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720266562.XU Expired - Fee Related CN206666999U (en) | 2017-03-17 | 2017-03-17 | A kind of pitch sprinkling car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206666999U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108149549A (en) * | 2018-01-24 | 2018-06-12 | 徐工集团工程机械有限公司 | Asphalt foaming flusher and cold asphalt rehabilitation equipment |
| CN108867284A (en) * | 2018-06-19 | 2018-11-23 | 蒙凤英 | A kind of maintenance agent for concrete pavement flusher |
-
2017
- 2017-03-17 CN CN201720266562.XU patent/CN206666999U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108149549A (en) * | 2018-01-24 | 2018-06-12 | 徐工集团工程机械有限公司 | Asphalt foaming flusher and cold asphalt rehabilitation equipment |
| CN108149549B (en) * | 2018-01-24 | 2023-12-08 | 江苏徐工工程机械研究院有限公司 | Asphalt foaming spraying device and asphalt cold recycling equipment |
| CN108867284A (en) * | 2018-06-19 | 2018-11-23 | 蒙凤英 | A kind of maintenance agent for concrete pavement flusher |
| CN108867284B (en) * | 2018-06-19 | 2020-06-26 | 中交基础设施养护集团宁夏工程有限公司 | Concrete road surface curing agent sprinkler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20171124 |