CN101736682B - Microwave heating device for fast repairing asphalt pavement - Google Patents

Microwave heating device for fast repairing asphalt pavement Download PDF

Info

Publication number
CN101736682B
CN101736682B CN2009102193582A CN200910219358A CN101736682B CN 101736682 B CN101736682 B CN 101736682B CN 2009102193582 A CN2009102193582 A CN 2009102193582A CN 200910219358 A CN200910219358 A CN 200910219358A CN 101736682 B CN101736682 B CN 101736682B
Authority
CN
China
Prior art keywords
microwave
furnace body
motor
microwave oven
heating
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.)
Expired - Fee Related
Application number
CN2009102193582A
Other languages
Chinese (zh)
Other versions
CN101736682A (en
Inventor
张东省
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN2009102193582A priority Critical patent/CN101736682B/en
Publication of CN101736682A publication Critical patent/CN101736682A/en
Application granted granted Critical
Publication of CN101736682B publication Critical patent/CN101736682B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The invention discloses a microwave heating device for fast repairing an asphalt pavement. A furnace body bracket is connected with a microwave furnace body component, a microwave generator is installed in an inner cavity of the microwave furnace body component, the left side of the furnace body bracket is connected with a front part platform device, a discharging device and a control cabinet, a guide angle steel and a tail bracket are connected to the discharging device, the guide angle steel is connected with an operation platform through a connecting rod piece, a heat preservation material storing device is connected below the operation platform, a motor and a reducer are in rolling connection with a synchronizer through a belt or a chain, a plurality of roll wheels are distributed on a motive track at intervals, a closed chain is sleeved on each roll wheel, a lifting device is installed at the upper end of the motive track, the lower end of the left side of the furnace body bracket is connected with supporting legs, and a ventilation opening is arranged at the upper end of the microwave furnace body component, therefore, the invention has the advantages of enhancing the pavement repairing speed, heating quantitative mixture at any time and anywhere according to the needs, removing a long distance transportation link, improving the aggregate performance, overcoming the asphalt ageing, realizing environmental protection, energy saving and equipment automation and lowering the labor intensity and the pavement repairing cost and is suitable for fast repairing the asphalt pavement.

Description

The microwave heating equipment of fast repairing asphalt pavement
Technical field
The present invention relates to the device of Reparation of Bituminous Pavement, be specifically related to the microwave heating equipment of fast repairing asphalt pavement.
Technical background
At present, traditional road surface pit repairing mode wastes time and energy, and repairing quality is poor, the maintenance costs height, and pavement patching is untimely, and the hole groove is often increasing, is difficult to satisfy the driving requirement.The used bituminous mixture of general Reparation of Bituminous Pavement hole groove is to adopt at fixing mixing building or scene to be prepared from the naked light heating, vehicles drive is on-the-spot to repairing, add heated bitumen and aggregate with heat energy, the prior art heating means are conducted heat slow, heat time heating time is long, the compound thermal loss is fast in the transportation, especially winter, thermal loss was faster, if temperature is too high during heating, ageing of asphalt is serious, the compound of a small amount of heating can't guarantee the spreading temperature of constructing required after the long-distance transport in addition, and the on-the-spot flue gas that is produced with the naked light heating influences defectives such as air quality.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structurely, the Reparation of Bituminous Pavement cost is low, and repairing speed is fast, and on-the-spot warm-up time is short, improves the performance of aggregate, can guarantee the microwave heating equipment of the loss-free substantially fast repairing asphalt pavement of temperature of compound.
In order to overcome the deficiencies in the prior art, technical scheme of the present invention: a kind of microwave heating equipment of fast repairing asphalt pavement, comprise a truck, special character of the present invention is to be separately installed with generating set, microwave oven body assembly, furnace body support, motor-driven track, bracket at tail part assembly, front platform device, insulation storage device, operating platform, lifting device, supporting leg, motor and reductor, device for discharging, sychronisation, switch board on the recessing of traveling vehicle of this device; Described furnace body support is connected with the microwave oven body assembly, microwave oven body assembly inner chamber is equipped with the microwave generator of different capacity, the furnace body support left side connects the front platform device, device for discharging, switch board, be connected with side guide and bracket at tail part assembly on the device for discharging, side guide is connected with operating platform by connecting rod member, be connected with the insulation storage device below the operating platform, motor and reductor roll with sychronisation by belt or chain and are connected, motor-driven orbital spacing a plurality of running rollers that distribute, closed chain is inserted on the running roller, lifting device is installed in motor-driven track upper end, an elevating ram and another elevating ram are installed in motor-driven track lower end, lower end, furnace body support left side is connected with supporting leg, microwave oven body assembly upper end is provided with ventilation opening, and the door of described insulation storage device is opened discharging by the hydraulic jack that is installed on the bracket at tail part assembly.
The present invention compared with prior art has following beneficial effect:
1. utilize microwave Fast Heating bituminous mixture module, realized the damaged road surface of quick reparation.Use this utility model equipment, realized heating on demand quantitative compound whenever and wherever possible, deducted the link that mixing building in the technology of present repairing road surface adds heat mixture and long-distance transport.Owing to adopted heating using microwave mechanism, the aggregate internal temperature after the bituminous mixture heating makes that a little more than external temperature the material cooling rate is slow, and constant temperature time is long, helps operation under the lower condition of environment temperature;
2. specification is not more than 900mm * 900mm * 150mm bituminous mixture module and all can uses, and storage compound module can utilize road newly-built the time, makes that mixture gradation and newly-built grating are consistent when repairing; Once can repair the thick road surface 2.4m of 50mm 2, can realize that by the insulation storage device maximum once repairs 7m 2
3. improved the performance of compound.Use this invention equipment, changed the compound mode of heating, the heating of conventional hybrid material is outside in, and to gathering materials, and this mode of heating is from the inside to surface from pitch.Pitch after gathering materials earlier can be avoided the aging of pitch.
4. various bituminous mixtures of Fast Heating can reach the arbitrary temp of construction requirement.The scene adds heat mixture, selects the compound heating-up temperature according to temperature.
5. realized environmental protection, energy-conservation, do not waste raw material.Use this utility model equipment, construction environment is not had any pollution.Using this technology is exactly quantitatively to use compound, and what need, and what are used.Compound has not a particle of waste, has reduced the consumption of energy.
6. construction is not subjected to place and time restriction flexibly.Adopt heating using microwave, can repair the road surface at any time, do where bad where repairing; Simultaneously, adopt heating using microwave not influenced by temperature, easily can repair winter, and construction flexibly.
7. equipment operation automation has reduced working strength of workers, has reduced the construction number of workers, has reduced the cost of repairing, mend the road surface.
8. repair in time, the hole groove has just excavated and can repair immediately, has avoided the gathering of backfill interim water at the hole groove, and road pavement causes new harm.
9. it is long to repair the hole groove life.It is few to adopt heating using microwave to repair the compound damage, and pavement patching material is similar or identical with former grating, and it is long to repair the hole groove life, has reduced the repairing repeatedly of hole groove, has better economic and social benefit.
10. can heat the old pavement bituminous mixture, realize the materials recycling utilization.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
Accompanying drawing is embodiments of the invention.
Below in conjunction with accompanying drawing summary of the invention is described further:
With reference to shown in Figure 1, the microwave heating equipment of fast repairing asphalt pavement is separately installed with generating set 21, microwave oven body assembly 1, furnace body support 14, motor-driven track 2, bracket at tail part assembly 3, front platform device 4, insulation storage device 5, operating platform 6, lifting device 7, supporting leg 8, motor and reductor 9, device for discharging 10, sychronisation 11, switch board 12 on the recessing of traveling vehicle 22; Described furnace body support 14 is connected with microwave oven body assembly 1, microwave oven body assembly 1 inner chamber is equipped with the microwave generator of different capacity, furnace body support 14 left sides connect front platform device 4, device for discharging 10, switch board 12, be connected with side guide 13 and bracket at tail part assembly 3 on the device for discharging 10, side guide 13 is connected with operating platform 6 by connecting rod member, be connected with insulation storage device 5 below the operating platform 6, motor and reductor 9 roll with sychronisation 11 by belt or chain and are connected, motor-driven track 2 a plurality of running rollers 18 spaced apart, closed chain 17 is inserted on the running roller 18, lifting device 7 is installed in motor-driven track 2 upper ends, elevating ram 15 and another elevating ram 16 installed in motor-driven track 2 lower ends, lower end, furnace body support left side is connected with supporting leg 8, microwave oven body assembly 1 upper end is provided with ventilation opening 19, and the door of described insulation storage device 5 is opened discharging by the hydraulic jack 20 that is installed on the bracket at tail part assembly 3.
In sum, characteristics of the present invention are as follows:
1) utilize microwave energy that bituminous mixture is heated.Because the variation of heating principle, the variation of matter has taken place in the speed that mixture temperature is raise.It is that the electromagnetic field that utilizes high frequency to change causes polar molecule high-speed motion generation heat in the material that microwave energy adds heat mixture, and the object self-temperature is raise.Under the normal temperature state, only need the time of a few minutes, compound will reach 150 ℃, solve the slow problem of firing rate.
2) microwave energy being added the hot asphalt mixture device is installed on the vehicle that can walk fast.
3) microwave energy adds the heat mixture process, is controlled automatically by micro computer, and infrared temperature is measured, and monitors the temperature of compound in real time.When temperature reaches the temperature of setting, provide control signal, microcomputerized control stops microwave energy and supplies with.Microwave field intelligence changes guarantees to be heated the compound intensification evenly.
4) automation of compound turnover microwave oven body is finished, microwave oven body is designed to hexahedral shape, bottom opening, compound is given rise in the microwave oven body thus, after finishing, heating drops to the body of heater outside automatically by microcomputerized control, use the mode of running roller delivery that compound is moved on to the blanking station again, and by the microcomputerized control automatic blanking.
5) this equipment adopts microwave Fast Heating mechanism, the compound Prefabricated block that road pavement is repaired usefulness carries out Fast Heating, maximum heating material weight 300Kg, can repair 2.4 square metres (50 millimeters of thickness), about 20 minutes of heat time heating time, this car is furnished with the insulation storage device, and the heating of 2 to 3 stove materials can be satisfied the materials requirement of once repairing 7.2 square metres of road surfaces.Display material temperature directly perceived, but the material heating-up temperature is automatically-controlled continuous in 300 degree scopes, whole heating process is controlled firing rate and homogeneous heating degree automatically by computer fully, but also manual adjustment heating-up temperature, owing to adopted heating using microwave mechanism, material is by internal heat generation, therefore the material cooling rate is low, can keep long constant temperature time, operation also can guarantee long operating temperature interval when environment temperature is low, and this equipment does not need preheating (generator starts only needs 30 seconds) simultaneously.Also can carry out reheat for loose unrestrained material.
6) power supply can be selected, and during the dynamic 380 volts of power supplys in working site, gets final product with 380 volts of power supplys of power, uses the house generator group during non-transformer.
Elaborate again to installing composition and function and use operating instruction below:
One, device mainly is made up of following part:
By the microwave oven body assembly; Generating set; Traveling vehicle; Hydraulic system; Transmission system; Control system (automatic control system and manual control system); The insulation storage device is formed.
The each several part major function is as described below:
(1) microwave oven body assembly heating furnace
The microwave oven body assembly is the core that car is repaired in heating using microwave, and its technological core mainly contains following 5 points:
1. the generation of HIGH-POWERED MICROWAVES energy
Make full use of solid space, Proper Design becomes five the microwave energy transmitter all is installed.Select powerful element as far as possible, realize obtaining in the unit volume maximum microwave energy.
2. heating object is wanted thermally equivalent everywhere
For realizing that heating object evenly heats up, with the formation varying strength of the microwave energy science of varying strength, difform microwave field by switching of computer control science, thereby is realized heating object thermally equivalent everywhere between various microwave fields.
3. superpower microwave energy must not leak
In order to satisfy environmental requirement, reach the control criterion that country leaks microwave energy, the high pressure sealing design is pressed in the sealing of body of heater door.Its seal designs becomes rubber-like not absorb the highly dense wire lath ring of microwave material, and effect is splendid, is up to state standards.
4. the temperature of heating object control in the microwave field
The control of the temperature of heating object is designed to the method for controlling of dual fail-safe, one in the microwave field: according to the experimental data that a large amount of experiments obtain, the control warm-up time, temperature control precision is reached ± 3 ℃ of scopes in; Its two: utilize the far infrared temperature measurer, remote temperature measurement, temperature control precision can reach ± 5 ℃.System is designed to these two kinds of methods monitors simultaneously, the automatic control of sampling back of computer.
5. supply with the microwave energy of proper strength according to the amount of heating object
For the purpose that reaches energy-conservation, science is heated, the compound of Different Weight, we use the microwave energy of different capacity, make the intensification best results, and energy consumes minimum, has reduced heating cost.
(2) generating set
This generating set stable performance, noise is little, satisfies the equipment requirement and surplus is arranged slightly.This generating set can be regulated the rotating speed of diesel engine automatically according to the load size, has realized the automatic control of generator.Generating set is in parallel with 380 volts of electrical source of power, is controlled automatically by computer, and generator automatically switches to electrical source of power during dynamic power supply, and generator does not start automatically when having electrical source of power, and is increasingly automated, need not artificial interference.
(3) traveling vehicle
Realized the fast moving of equipment, the time scooter 95km/h.All assemblies such as generator are installed in the casing.Control panel of vehicle casing side arrangement, all feature operations except that walking are all in this realization.Indicator lamp is installed at the casing top, during equipment work, obvious indication is arranged.Whole box body is made by corrugated steel plate, is sprayed into particular color as requested, meets national inclosed body regulation.
(4) hydraulic system
Hydraulic system comprises an oil station, and the hydraulic oil pipeline is controlled covert valve body and various oil cylinder, mainly finishes following work: 3. the 1. lifting of lifting device, the drop action 2. discharging of device for discharging are incubated opening the door of storage device and the action of closing the door.Above-mentioned exercises are all finished under the control of computer automatically.
(5) transmission system
This system is by a motor, a reductor, and driving chain, running roller and synchronizing shaft are formed.Major function is: 1. compound to be heated and loading platform are transported to the body of heater bottom from loading area; 2. the compound that heats is transported to discharge zone from the body of heater bottom, above-mentioned action is all finished under the control of computer automatically.
(6) control system
Control system is the core in the technological core of this equipment, is made up of switch board, position sensor, microwave energy generator, temperature pick up and microwave operation indicator.It is responsible for the detection of field position signal, and the measurement of temperature is sent the exercises instruction according to field condition, and commander finishes all auto-actions of this equipment.Micro computer is housed in the switch board, is the brain command centre of this equipment.
Control system is divided control automatically and manually control.The feature of automatic control system is all action interventions of not choosing, after receiving sign on, the retainer platform is transferred to below the micro-wave oven after dropping on the Live roller automatically from loading station automatically, after computer detects and to put in place with the retainer platform raising in stove, start heating system and begin to heat this moment, stops automatically to the design temperature heating system, and the retainer platform drops on the Live roller, power passes to unloading station with it, automatically discharging is returned to the material loading station again, waits for material loading.This is a work period, comes and goes to repeat.Manual system: above-mentioned action is finished step by step by Artificial Control.
(7) insulation storage device
In the regular hour, keep temperature in order to satisfy the compound that is heated, designed an insulation material storing box that can store 600 kilograms of compounds.Incubator is installed in the wagon box of transfer cart, is added with the structure of 50mm heat-preservation cotton in the middle of the insulation material storing box is designed to, and guarantees not cooling significantly in hour, guarantees the construction temperature requirement.Even in order to guarantee compound, in the process that is dumped into the insulation material storing box, shaft has been installed also.
Two, use operating instruction:
This equipment adopts computer control, and all the operation start button that need press on the control box can all be finished.
1) startup of generator: before the startup, after checking that fuel oil situation in the generator oil tank, cooling water situation are normally, open the generator control cabinet, connect the control power supply, selection manually boots pattern, press start button, when reaching specified output frequency and rated output voltage after the question generator preheating, generator delivery air switch closes.
2) check that before device start various device must stop at the home position, promptly the home position indicator lamp is bright, and under this state, unloading fuel tank is at the discharge position of extended position 1# lift master, and the 2# lift master is at down position, and heating furnace is in free state.
3) forwardly add on the platform material-to-be-heated.
4) according to the temperature of material-to-be-heated weight (or quantity) and needs heating, table look-up and determine the time and the power of heating.
5) automatic/maintenance rotary switch on the control box is turned to auto state; start button on the push case; system begins automatic operation; by motor-driven track material to be heated is sent into the heating using microwave casing, be heated to design temperature, system stops heating automatically; and discharging automatically; get back to the home position and shut down, wait for that next stove material packs into, so just finished a circulation.
6) from storage equipment, material is discharged in the hole groove that needs to repair, repairs compacting according to a conventional method and get final product.
7) end-of-job: close general supply in the electrical control cubicles, press the generator stop button, after question generator is out of service, cut off generator delivery air switch, disconnect control cabinet inner control power supply.
8) points for attention:
1. in heating process, if want to stop heating, only need press system's stop button, then heating work stops and discharging automatically.
2. when running into the unintended emergency situation, press emergency stop push button, equipment can be out of service immediately and be reported to the police, and must cut off to control power supply and reclose after 10 seconds and control power supply and manual operation just can be proceeded automatic work to the home position after emergency is removed.
Thickness can not be above 200 millimeters when 3. material was packed into.
4. the not removable front platform of when filling with substance.
Can not on equipment, sit when 5. moving and crouch.
6. unrelated person must be away from beyond 1 meter of the equipment.
7. should keep the heating panel cleaning of sealing surface all around in using, find to have foreign material cleaning in time.
8. to open Dump gate behind the end-of-job, the material on the sticking repairing road surface of applying of cleaning insulation storing bulkhead.

Claims (5)

1. the microwave heating equipment of a fast repairing asphalt pavement is characterized in that being separately installed with generating set (21), microwave oven body assembly (1), furnace body support (14), motor-driven track (2), bracket at tail part assembly (3), front platform device (4), insulation storage device (5), operating platform (6), lifting device (7), supporting leg (8), motor and reductor (9), device for discharging (10), sychronisation (11), switch board (12) on the recessing of traveling vehicle (22) of this device; Described furnace body support (14) is connected with microwave oven body assembly (1), microwave oven body assembly (1) inner chamber is equipped with the microwave generator of different capacity, furnace body support (14) left side connects front platform device (4), device for discharging (10), switch board (12), described front platform device (4) drops on the motor-driven track (2) automatically from loading station, by motor-driven track (2) compound to be heated and front platform device (4) are transported to the body of heater bottom from loading area, compound that heats and front platform device (4) are transported to discharge zone from the body of heater bottom, be connected with side guide (13) and bracket at tail part assembly (3) on the described device for discharging (10), side guide (13) is connected with operating platform (6) by connecting rod member, be connected with insulation storage device (5) below the operating platform (6), motor and reductor (9) roll with sychronisation (11) by belt or chain and are connected, motor-driven track (2) a plurality of running rollers spaced apart (18), closed chain (17) is inserted on the running roller (18), lifting device (7) is installed in motor-driven track (2) upper end, an elevating ram (15) and another elevating ram (16) are installed in motor-driven track (2) lower end, lower end, furnace body support left side is connected with supporting leg (8), microwave oven body assembly (1) upper end is provided with ventilation opening (19), the door of described insulation storage device (5) is opened discharging by the hydraulic jack (20) that is installed on the bracket at tail part assembly (3), the bottom of furnace body of described microwave oven body assembly (1) is an opening, and compound is given rise in the microwave oven body thus.
2. the microwave heating equipment of fast repairing asphalt pavement according to claim 1 is characterized in that the inner chamber of described microwave oven body assembly connects the microwave generator of at least three group different capacities.
3. the microwave heating equipment of fast repairing asphalt pavement according to claim 1 is characterized in that described insulation storage device inner chamber is connected with insulation bulkhead and electric mixer respectively.
4. the microwave heating equipment of fast repairing asphalt pavement according to claim 1, the heating-up temperature that it is characterized in that described microwave oven body assembly is in 300 ℃ of scopes.
5. the microwave heating equipment of fast repairing asphalt pavement according to claim 1 is characterized in that described microwave oven body assembly body of heater is a hexahedral shape, and the bottom is an opening.
CN2009102193582A 2009-12-07 2009-12-07 Microwave heating device for fast repairing asphalt pavement Expired - Fee Related CN101736682B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009102193582A CN101736682B (en) 2009-12-07 2009-12-07 Microwave heating device for fast repairing asphalt pavement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009102193582A CN101736682B (en) 2009-12-07 2009-12-07 Microwave heating device for fast repairing asphalt pavement

Publications (2)

Publication Number Publication Date
CN101736682A CN101736682A (en) 2010-06-16
CN101736682B true CN101736682B (en) 2011-06-15

Family

ID=42460669

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009102193582A Expired - Fee Related CN101736682B (en) 2009-12-07 2009-12-07 Microwave heating device for fast repairing asphalt pavement

Country Status (1)

Country Link
CN (1) CN101736682B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2875874A1 (en) * 2012-05-04 2013-11-07 Leap Technologies, Inc. Microwave processing unit for pavement recycling and asphalt pavement production
CN103758019B (en) * 2013-10-24 2016-03-02 广东易山重工股份有限公司 Hot-patch outfit heating panel
CN106245490B (en) * 2016-07-14 2017-06-16 山东大学 The vehicle-mounted heat-exchanger rig of pitch and method of a kind of temperature intelligent control
CN109489827A (en) * 2018-12-04 2019-03-19 江苏集萃道路工程技术与装备研究所有限公司 A kind of asphalt concrete microwave heating device infrared temperature measurement apparatus and temp measuring method

Also Published As

Publication number Publication date
CN101736682A (en) 2010-06-16

Similar Documents

Publication Publication Date Title
CN101736682B (en) Microwave heating device for fast repairing asphalt pavement
CN102660917B (en) Heat insulation recycling transport vehicle for hot air circulation asphalt mixture
CN210712492U (en) Microwave maintenance vehicle for asphalt pavement
CN201593151U (en) Micro-wave heating device for patching asphalt pavements fast
CN206233064U (en) One kind insulation hopper and Hot-blast Heating type asphalt pavement maintanance truck
CN201125361Y (en) Vehicle mounted type tar pavement maintenance car
CN108330798B (en) Double microwave heating maintenance vehicle for asphalt road
CN110685206A (en) Asphalt mixture combined type heating and stirring vehicle
KR101087402B1 (en) Parallel Flow Changeable Tilt Drum-Mixer in Hot Mix Asphalt Plant
CN201175970Y (en) Electrical heating asphalt concrete mixing machine
CN202055144U (en) Mobile device for microwave fast heating of asphalt mixture
CN204509966U (en) Hole, road surface groove microwave vulcanizes car fast
CN203765777U (en) Manufacturing system of sidewalk encaustic bricks
CN103993537B (en) Mobile bitumen compound reclaim equiment
CN202730595U (en) Hot air circulating type asphalt mixture heat-preservation and recycling transport vehicle
CN102383357B (en) Microwave heating device for pitch materials and microwave constant-temperature heating vehicle
CN210420817U (en) Multifunctional microwave regeneration asphalt pavement maintenance vehicle
CN210262593U (en) Drawing type microwave thermal regeneration asphalt mixture pavement maintenance vehicle
CN201206234Y (en) Asphalt mixture trucks
CN201873934U (en) Trail car type microwave maintenance truck for asphalt pavement
CN201301425Y (en) Coal-into-gas pavement maintenance vehicle
CN2719903Y (en) Bitumious pavement thermal regenerated curing vehicle
CN219137305U (en) Asphalt mixture heating box
CN2639349Y (en) Bituminous chamotte heating mixing machine
CN217149786U (en) Dragging type asphalt regeneration road surface repairing vehicle

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110615

Termination date: 20141207

EXPY Termination of patent right or utility model