CN104404992B - A kind of multifunctional high pressure water jet Operation Van - Google Patents
A kind of multifunctional high pressure water jet Operation Van Download PDFInfo
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- CN104404992B CN104404992B CN201410590619.2A CN201410590619A CN104404992B CN 104404992 B CN104404992 B CN 104404992B CN 201410590619 A CN201410590619 A CN 201410590619A CN 104404992 B CN104404992 B CN 104404992B
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Abstract
A kind of multifunctional high pressure water jet Operation Van, including chassis and install apparatus for work, cleaning system and pressurized, heated device on a chassis；Apparatus for work includes for the mobile and motion arm of location and is separately mounted to playpipe thereon and recovery tube, and the front end of playpipe connects high pressure nozzle, rear end connects pressurized, heated device, and the front end of recovery tube connects suction nozzle, rear end connects vacuum absorption pump；Cleaning system includes storage tank after main storage tank, cyclone separation device and the purification being sequentially connected with, main storage tank is connected with vacuum absorption pump, after purification, storage tank is connected with pressurized, heated device, pressurized, heated device includes the high-pressure plunger pump for being connected, prelum and heater with cleaning system, and the port of export of pressurized, heated device connects playpipe.The operations such as the present invention can carry out that pipe trench excavation, building wall cleaning and concrete are abolished；Further, the sewage that operation produces can be reclaimed in work progress, carry out filtering separation and recycling.
Description
Technical field
The present invention relates to the excavation for pipe trench, concrete is abolished and the operation such as building and mechanized equipment surface clean
Equipment, specifically a kind of multifunctional high pressure water jet Operation Van.
Background technology
Along with the progress of industry, increasing pipeline operations has needed.By the end of the year 2012, China's natural gas trunk
Pipeline total kilometrage about 5.5 ten thousand km.Along with the growth of pipeline service life, China's water-supply-pipe
There is problems such as missing, aging in road.The construction operations such as the construction of pipeline, maintenance typically use excavator to construct.?
When gas distributing system, chemical plant use excavator excavation pipe trench, often occur that buried pipeline is occurred by digging disconnected situation, occur letting out
The danger such as leakage, blast.
Meanwhile, use concrete road surface for many years to occur in that the problems such as fracture, depression, need to carry out to reinforce, the work such as renovation
Industry.Traditional concrete disintegrating technology such as pneumatic pick, vibration hammer, explosion etc., also exist the drawbacks such as efficiency is low, damage envelope is big, execute
Working medium amount is difficult to control to, and easily causes the cut-out of original concrete reinforcement and loosens.
The building such as building, bridge and plant equipment surface need periodically to carry out prune job, generally use hand-held height
Setting-out rifle is carried out operation, the most manually uses the instruments such as steel brush the spot being difficult to clean off to be brushed.Work efficiency is low, makees
Industry water consumption is big.
Domestic patent has also been mentioned to water cleaning work vehicle, such as utility model patent " urban road curb and curb
Stone cleaning Vehicle " (ZL200620051333.8) only carry out the washing and cleaning operation of road curb, and function is the most single, it is impossible to for pipe trench
Excavate, concrete such as abolishes at the construction operation.
Summary of the invention
The purpose of the present invention is aiming at the deficiencies in the prior art, it is provided that a kind of rational in infrastructure, easy to operate, efficiency is high and
Multiple functional multifunctional high pressure water jet Operation Van.
The technical scheme is that include chassis and install apparatus for work on a chassis, cleaning system and
Pressurized, heated device；Described apparatus for work includes for the mobile and motion arm of location and is separately mounted to playpipe thereon
And recovery tube, the front end of described playpipe connects high pressure nozzle, rear end connects pressurized, heated device, and the front end of described recovery tube is even
Connect suction nozzle, rear end connects vacuum absorption pump；Main storage tank that described cleaning system includes being sequentially connected with, cyclone separation device and
Storage tank after purification, described main storage tank is connected with described vacuum absorption pump, storage tank and described pressurized, heated after described purification
Device connects, and described pressurized, heated device includes the high-pressure plunger pump for being connected, prelum and heater with cleaning system,
The port of export of described pressurized, heated device connects described playpipe.
Such scheme can be more preferably:
Main water tank that described cleaning system includes being sequentially connected with, one-level screw pump, primary cyclone, one-level water storage
Tank, two grades of screw pumps, Multi-stage spiral device separator and two grades of water tanks, described Multi-stage spiral device separator is by multiple cyclones
Separator is sequentially connected in series and forms；It is additionally provided with blowdown tank, described primary cyclone and Multi-stage spiral device in described chassis to divide
Tail pipe from device is all connected with blowdown tank by inclined tube.Cyclone separator is common apparatus.Cyclone separator is to go for separation
The materials such as coarse granule silt particle heavier in scrubbing water, are also used for slurry dewatering, its operation principle sometimes: water depended on pressure or gravity by
Structures top tangentially enters, and under centrifugal action, coarse particles material is thrown to wall and rotates downward and formation
Dope is discharged together.Less particulate matter is discharged with upper bumpy flow after rotating to a certain degree.
The casing side of described blowdown tank is provided with chamber door, inside is provided with Tui Dou mechanism, and described Tui Dou mechanism includes cutting with scissors respectively
It is connected on hydraulic jack and the push rod of end face on casing, the piston rod of described hydraulic jack and the middle part of push rod hinged, described push rod
Front end connect bourdon tube, the front end chain connection of described bourdon tube pushes away bucket.
Being provided with filter screen in described main water tank, the progression of described Multi-stage spiral device separator is 2～4 grades.Progression can also
Adjust according to water quality requirement.
Described pressurized, heated device includes high-pressure plunger pump, prelum I, prelum II and heater；Described prelum I,
Prelum II and heater are connected in parallel on the outlet line of high-pressure plunger pump by switch valve respectively, can be by opening on manifold
Close valve and control the flow direction of water.The end of described high-pressure plunger pump outlet line connects playpipe.
Heater of the present invention is existing common apparatus.It is used for making heat be delivered to cold flow body from hot fluid,
Device with the technological requirement of satisfied regulation.Movable tube sheets heat exchanger, fixed tube-sheet exchanger, U-tube plate heat exchange can be used
The pattern that device, plate type heat exchanger etc. are different.
Prelum of the present invention is existing common apparatus.Operation principle: be multiplied by compression face according to pressure=pressure
Long-pending principle, acts on big piston by less power and promotes valve piston motion, produce energetically by little power, it is possible to produce superelevation
Setting-out, pressure can reach 50～150MPa.By prelum I, prelum II, system can obtain the height of different pressures grade
Setting-out, depends primarily on the cylinder diameter ratio of prelum.
Described playpipe is high-pressure rubber pipe, and described high pressure nozzle is made up of nozzle carrier, nozzle body and locking nut, permissible
Obtain different spray pattern by changing different nozzle bodies, obtain the High-Pressure Water of multiple flow velocity；The whole series can also be changed
High pressure nozzle is rotary nozzle, obtains multiple spray pattern.
Wherein, suction nozzle and high pressure nozzle are arranged on the front end of motion arm, and suction nozzle is arranged on around high pressure nozzle, it is simple to make
Industry produces the recovery of sewage.Motion arm can be controlled by the operation part in driver's cabin, guides suction nozzle and high pressure spray
Mouth moves to relevant position.
In described chassis, the power needed for each device is provided by the electromotor of chassis or the assistant engine of another dress；Described
Heat needed for heater is completed by fuel Heating.
The multifunctional high pressure water jet Operation Van of the present invention can carry out pipe trench excavation, building wall cleans and concrete
The operation such as abolish；Further, the sewage that operation produces can be reclaimed in work progress, carry out filtering separation and recycling.
Accompanying drawing explanation
Fig. 1 multifunctional high pressure water jet Operation Van population structure schematic diagram
Fig. 2 apparatus for work structural representation
Fig. 3 high pressure nozzle structural representation
Fig. 4 cleaning system structural representation
Fig. 5 pressurized, heated apparatus structure flow chart
Fig. 6 blowdown tank structural representation
Fig. 7 multifunctional high pressure water jet Operation Van construction operation view
In figure: apparatus for work 1, suction nozzle 11, high pressure nozzle 12, nozzle carrier 122, locking nut 123, nozzle body 124, vacuum
Recovery pump 13, high-pressure rubber pipe 14, motion arm 15, recovery tube 16；Cleaning system 2, main storage tank 21, one-level screw pump 22, one-level
Cyclone separator 23, one-level storage tank 24, two grades of screw pumps 25, multistage cyclonic fluid separator 26, two grades of storage tanks 27, outlet pipe
28, inclined tube 29；Pressurized, heated device 3, high-pressure plunger pump 31, switch valve I 32, prelum I 33, heater 34, switch valve II 35,
Switch valve III 36, switch valve IV 37, prelum II 38, switch valve V 39；Chassis 4；Blowdown tank 5；Casing 51, chamber door 52, oil
Cylinder 53, push rod 54, push away bucket 55, bourdon tube 56.
Detailed description of the invention
In conjunction with accompanying drawing, the present invention is further illustrated.
In conjunction with Fig. 1, the multifunctional high pressure water jet Operation Van provided for the present invention.It includes apparatus for work 1, cleaning system
2, pressurized, heated device 3, chassis 4 and blowdown tanks 5 etc., said apparatus is arranged in chassis 4, and can be in chassis
The operation carrying out package unit in driver's cabin controls.The fortune of described apparatus for work 1, cleaning system 2, pressurized, heated device 3 etc.
Row all uses hydraulic means to drive, and electromotor or the assistant engine of another dress of chassis taken from by required drive power takeoff.
In conjunction with Fig. 2, for the apparatus for work 1 of multifunctional high pressure of the present invention water jet Operation Van, by suction nozzle 11, high pressure nozzle
12, the composition such as vacuum absorption pump 13, high-pressure rubber pipe 14, motion arm 15 and recovery tube 16.Have high-pressure injection operation concurrently and sewage returns
Receive two kinds of functions.
Wherein, sewage recovery funtion part is made up of suction nozzle 11, vacuum absorption pump 13 and recovery tube 16.By vacuum absorption pump
13 provide negative pressure, are drawn by the sewage near suction nozzle 11, and are reclaimed by sewage by the recovery tube 16 being arranged on motion arm 15
In main storage tank 21.The outlet of vacuum absorption pump 13 is provided with filter screen, at the beginning of can being carried out by the impurity thing that reclaim in sewage
The filtration of step.As it can be seen, suction nozzle 11 uses sector structure, it is distributed in high pressure nozzle 12 around.
Wherein, high-pressure injection operation function part is made up of high pressure nozzle 12 and high-pressure rubber pipe 14.Pressurized, heated device will
Water under high pressure is transported to high pressure nozzle 12 by high-pressure rubber pipe 51, and under the control of motion arm 15, high pressure nozzle moves to construction location.
In conjunction with Fig. 3, for high pressure nozzle structural representation, by nozzle carrier 122, high pressure nozzle 124 and locking nut 123 groups
Become.The structure of high pressure nozzle is convenient for changing different types of nozzle, to adapt to different construction requirements.
Suction nozzle 11 and high pressure nozzle 12 are arranged on motion arm 15, are moved by motion arm 15 and are positioned.In order to return in time
Being incorporated as the sewage that industry produces, suction nozzle 11 can be fabricated to sector or triangular structure, is arranged on high pressure nozzle 12 around.
In conjunction with Fig. 4, for the cleaning system 2 of the multifunctional high pressure water jet Operation Van of the present invention.Cleaning system 2 is by main water storage
Case 21, one-level screw pump 22, primary cyclone 23, one-level storage tank 24, two grades of screw pumps 25, multistage cyclonic fluid separators
26, the composition such as two grades of storage tanks 27, outlet pipe 28, inclined tubes 29.Sewage is reclaimed by the sewage recovery section in apparatus for work 1, warp
It is stored in after strainer filtering in main storage tank 21.It is arranged on the one-level screw pump 22 of main storage tank by sewage transport to one-level eddy flow
Separator 23.In primary cyclone 23, swiftly flowing sewage is due to subject to centrifugal forces, and solid impurity is to four
Week separates, and enters in inclined tube 29 along tail pipe, and the sewage removing impurity stores along central canal inflow one-level storage tank 24.It is arranged on
Water in water tank is transported to multistage cyclonic fluid separator 26 by two grades of screw pumps 25 in one-level storage tank, multistage cyclonic fluid separator
Operation principle is as the operation principle of primary cyclone.The progression of multistage cyclonic fluid separator can be changed, to be accorded with
Close the water quality required.In the isolated water of multistage cyclonic fluid separator is stored into two grades of storage tanks 27.Primary cyclone
23 and multistage cyclonic fluid separator 26 separate produce solid impurity fall into inclined tube 29, be pooled in blowdown tank 5.
In conjunction with Fig. 5, for the pressurized, heated device 3 of multifunctional high pressure of the present invention water jet Operation Van.Pressurized, heated device 3 is main
Will be by high-pressure plunger pump 31, switch valve I 32, prelum I 33, heater 34, switch valve II 35, switch valve III 36 and switch valve IV
37, the composition such as prelum II 38 and switch valve V 39.Sewage, after cyclonic separation, inputs high-pressure plunger pump 31.According to engineering need
, by switch valve control, water under high pressure can be through following several flow processs, to meet the needs of job site: (one) room temperature is high
Setting-out (within 30MPa), when switch valve IV 37 and switch valve II 35 are opened, and when other valve cuts out, water under high pressure can directly carry
High pressure nozzle to apparatus for work；(2) normal-temperature superhigh pressure water (30～50MPa), when switch valve I 32 and switch valve II 35 are opened,
When other valve cuts out, water under high pressure becomes high-pressure water after prelum I pressurizes, and is transported to the high pressure nozzle of apparatus for work；
(3) normal-temperature superhigh pressure water (50～150MPa), when switch valve II 35 and switch valve V 39 are opened, when other valve cuts out, water under high pressure
After prelum II pressurizes, become high-pressure water, be transported to the high pressure nozzle of apparatus for work；(4) heating water under high pressure (10MPa
Within, 80 DEG C), when switch valve IV 37 and switch valve III 36 are opened, and when other valve cuts out, water under high pressure heats through heater 34
After, it is transported to the high pressure nozzle of apparatus for work.
It addition, the pressure limit that patent of the present invention a kind of multifunctional high pressure water jet car is provided can be pressurizeed by replacing
The equipment such as device are adjusted, and are not limited to above-mentioned several force value.Described heating-up temperature also can be adjusted.
In conjunction with Fig. 6, described blowdown tank 5.Chamber door 52 can be opened and closed by hydraulic cylinder.The row of being provided with in casing 51
Dirty Tui Dou mechanism.Tui Dou mechanism by oil cylinder 53, push rod 54, bourdon tube 56, push away part such as bucket 55 etc. and form.Wherein push rod 54 with
Bourdon tube 56 links together, and the front end hinge-coupled of bourdon tube 56 pushes away bucket 55, due to the thrust of bourdon tube 56, pushes away bucket 55
All the time near on tank wall.The ear mount chain connection that oil cylinder 53 tailstock pushes up with casing 51, the piston rod of oil cylinder 53 and push rod 54
Interstitial hole chain connection.After work a period of time, push away bucket 55 by oil cylinder 53 and move forward, impurity in case is discharged.
Embodiment one: (hyperbaric heating water, 10MPa, 80 DEG C)
The greasy dirt washing and cleaning operation of equipment, for the greasy dirt on equipment component, the cleaning of grease and the greasy dirt of engineering machinery
Clean, multifunctional high pressure of the present invention water jet Operation Van can be used to complete.Because greasy dirt, grease can be softened by the hot water of 85 DEG C,
Reduce the cohesive force of itself and matrix surface, then examine high-pressure water jet and greasy dirt, grease can be peeled off from matrix surface, need not add
Add abluent and can obtain preferable cleaning performance.By heater, water under high pressure can be heated.After frozen soil layer is heated
Easily abolish after high pressure water impact.
When using the greasy dirt washing and cleaning operation that multifunctional high pressure of the present invention water jet Operation Van carries out equipment component, before institute
Apparatus for work, the cleaning system stated all are run by normal mode.In the running of pressurized, heated device, open valve III 36 He
Valve IV 37, cuts out other valve so that the water under high pressure after plunger displacement pump pressurization heats through heater 34, is transported to apparatus for work
High pressure nozzle.
Owing to greasy dirt is readily adhered on equipment and the manifold of cleaning system, equipment is caused normally not use.Therefore exist
In the cleaning process of greasy dirt, the sewage not produced operation reclaims.Can be real by the way of closing vacuum pump and high pressure nozzle
Existing.
Embodiment two: (high-pressure water, 35MPa, 20 DEG C)
The surface clean operation of the buildings such as building, bridge, culvert.In daily municipal operation, the surface of building
Clean and account for the biggest ratio, owing to the building surfaces such as bridge culvert include that arc surface, hollow etc. are irregularly shaped, surface clear
Wash operation relatively difficult.The multifunctional high pressure water jet Operation Van of the present invention can effectively complete corresponding job task.
Cleaning by High Pressure Water Jet, mainly by the kinetic energy of high-pressure water jet come impacted object surface scale, applicator and
Oxide, reaches the effect peeled off and remove, and it is with water as medium, by high-pressure plunger pump, water is forced into 30～50MPa,
Again by circumferentially arranging nozzle, high pressure water jets is mapped to body surface, completes to clean.
In the running of pressurized, heated device, open valve II 35 and valve IV 37, close other valve, do not run prelum
With heater 34.In operation process, shower nozzle can be increased to desired height and carry out action as requested by motion arm.By
Surrounding in high pressure nozzle is provided with fan-shaped suction nozzle, it is possible to sewage operation produced is regained.Clear with other existing water under high pressure
The equipment of washing is compared, and the multifunctional high pressure water jet Operation Van of the present invention has and saves water source and reduce the workload etc. that secondary is removed
Feature.
Embodiment three: (high-pressure water, 100MPa, 20 DEG C)
Concrete is abolished in operation, and with pure water as working media, the pressure of power set is 100～150MPa, utilizes little
Hole ejector principle, is converted to the high speed kinetic energy of 300～800m/s, for rigid structure things such as concrete by the pressure energy of high-pressure water
Abolish.When the multifunctional high pressure water jet Operation Van using the present invention carries out relevant operation, need to configure elevated pressurization device and enter
Row supercharging, simultaneously need to change corresponding nozzle body.
When the multifunctional high pressure water jet Operation Van using the present invention carries out operation, foregoing apparatus for work, purification
System is carried out according to normal mode.In the running of pressurized, heated device, open valve I 32 and valve II 35, close other valve.
Existing hydraulic pressure can be increased by prelum II 33, and according to the operation principle of prelum, after hydraulic pressure increases, discharge subtracts accordingly
Little.High pressure is abolished in operation, needs to change corresponding nozzle body, to adapt to the water source of high-pressure low-flow.
The multifunctional high pressure water jet Operation Van that these are only the present invention excavates for pipe trench, concrete is abolished, building
Several embodiments of surface clean, the invention is not limited in work and the device group of employing that above-described embodiment completed
Close.
Advantages of the present invention:
(1) operation can be produced by suction nozzle and the cleaning system of the apparatus for work of multifunctional high pressure of the present invention water jet Operation Van
Raw sewage reclaims, filters separation, recycling.There is water-saving advantage, under the water tank of same volume, the present invention's
Effective time is longer.
(2) the pressurized, heated device of multifunctional high pressure of the present invention water jet Operation Van is configured with prelum and heater, can
To carry out supercharging and the heating of high-pressure water jet operation water according to construction requirement.
(3) the isolated solid impurity of high-pressure cyclone separator of multifunctional high pressure of the present invention water jet Operation Van is along tail
Pipe enters inclined tube, and is pooled in blowdown tank.When needing to get rid of the solid impurity in case, the bucket that pushes away in blowdown tank automatically will be solid
Body impurity is released.
(4) suction nozzle and the high pressure nozzle of the apparatus for work of multifunctional high pressure of the present invention water jet Operation Van shares an operation
Arm, suction nozzle is arranged on around high pressure nozzle, it is simple to the sewage produced in hydraulic spray operation process reclaims.
For those skilled in the art, under the premise without departing from the principles of the invention, it is possible to right
Partial structurtes make some improvements and modifications, and these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (7)
1. a multifunctional high pressure water jet Operation Van, it is characterised in that: include chassis and work on a chassis is installed
Industry device, cleaning system and pressurized, heated device；Described apparatus for work includes for the mobile and motion arm of location and difference
Playpipe mounted thereto and recovery tube, the front end of described playpipe connects high pressure nozzle, rear end connects pressurized, heated device,
The front end of described recovery tube connects suction nozzle, rear end connects vacuum absorption pump；Described cleaning system includes the main water storage being sequentially connected with
Storage tank after case, cyclone separation device and purification, described main storage tank is connected with described vacuum absorption pump, stores up after described purification
Water tank is connected with described pressurized, heated device, and described pressurized, heated device includes the high-pressure plunger for being connected with cleaning system
Pump, prelum and heater, the port of export of described pressurized, heated device connects described playpipe；Described cleaning system includes depending on
The main water tank of secondary connection, one-level screw pump, primary cyclone, one-level water tank, two grades of screw pumps, Multi-stage spiral devices divide
From device and two grades of water tanks, described Multi-stage spiral device separator is sequentially connected in series by multiple cyclone separators and forms；The described end
Being additionally provided with blowdown tank on jiggering, the tail pipe of described primary cyclone and Multi-stage spiral device separator is all by inclined tube and blowdown
Case connects.
Multifunctional high pressure the most according to claim 1 water jet Operation Van, it is characterised in that: the casing one of described blowdown tank
Side is provided with chamber door, inside is provided with Tui Dou mechanism, described Tui Dou mechanism include being respectively hinged on casing the hydraulic jack of end face and
Push rod, the piston rod of described hydraulic jack and the middle part of push rod are hinged, and the front end of described push rod connects bourdon tube, described bourdon tube
Front end chain connection push away bucket.
Multifunctional high pressure the most according to claim 1 water jet Operation Van, it is characterised in that: it is provided with in described main water tank
Filter screen, the progression of described Multi-stage spiral device separator is 2～4 grades.
Multifunctional high pressure the most according to claim 1 water jet Operation Van, it is characterised in that: described pressurized, heated device bag
Include high-pressure plunger pump, prelum I, prelum II and heater；Described prelum I, prelum II and heater are respectively by opening
Closing valve to be connected in parallel on the outlet line of high-pressure plunger pump, the end of described high-pressure plunger pump outlet line connects playpipe.
Multifunctional high pressure the most according to claim 4 water jet Operation Van, it is characterised in that: described heater is floating head type
Heat exchanger, fixed tube-sheet exchanger, U-tube sheet heat exchanger or plate type heat exchanger.
Multifunctional high pressure the most according to claim 1 water jet Operation Van, it is characterised in that: described playpipe is high-pressure glue
Pipe, described high pressure nozzle is made up of nozzle carrier, nozzle body and locking nut；Described suction nozzle is arranged on around high pressure nozzle.
7. according to claim 1-6 arbitrary described multifunctional high pressure water jet Operation Van, it is characterised in that: in described chassis
Power needed for each device is provided by the electromotor of chassis or the assistant engine of another dress；Heat needed for described heater passes through
Fuel Heating completes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410590619.2A CN104404992B (en) | 2014-10-29 | 2014-10-29 | A kind of multifunctional high pressure water jet Operation Van |
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| CN201410590619.2A CN104404992B (en) | 2014-10-29 | 2014-10-29 | A kind of multifunctional high pressure water jet Operation Van |
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| CN104404992B true CN104404992B (en) | 2016-11-23 |
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| CN107059972A (en) * | 2017-04-20 | 2017-08-18 | 广东和发输变电安装有限公司 | A kind of hydraulic pressure Work machine people system and management method |
| CN107186721A (en) * | 2017-07-21 | 2017-09-22 | 江苏集萃智能制造技术研究所有限公司 | A kind of water jet intelligent robot |
| CN110565497B (en) * | 2019-09-12 | 2021-10-08 | 南京富技腾精密机械有限公司 | High-pressure cleaning and slag liquid recovery device with cart |
| CN112813898A (en) * | 2020-11-19 | 2021-05-18 | 中国人民解放军96782部队 | Soil rock hair base clearance platform truck |
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| CN1519434A (en) * | 2003-01-26 | 2004-08-11 | 姚实现 | New type versatile sanitation vehicle, versatile cars, excavator, and mechanical arm |
| CN103568919B (en) * | 2013-06-17 | 2016-02-03 | 宁波杰马克节能环保科技有限公司 | A kind of multifunctional combined suction vehicle |
| CN204199353U (en) * | 2014-10-29 | 2015-03-11 | 胜利油田高原石油装备有限责任公司 | A kind of multifunctional high pressure water jet working vehicle |
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Effective date of registration: 20210113 Address after: No.171 Fenhe Road, Dongying District, Dongying City, Shandong Province 257091 Patentee after: Shandong Plateau oil and gas equipment Co.,Ltd. Address before: 257091 No.232, Nanyi Road, Dongying District, Dongying City, Shandong Province Patentee before: SHENGLI OILFIELD HIGHLAND PETROLEUM EQUIPMENT Co.,Ltd. |
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