CN101781898B - Grab type hydraulic automatic grabbing and dredging machine - Google Patents
Grab type hydraulic automatic grabbing and dredging machine Download PDFInfo
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- CN101781898B CN101781898B CN 200910060660 CN200910060660A CN101781898B CN 101781898 B CN101781898 B CN 101781898B CN 200910060660 CN200910060660 CN 200910060660 CN 200910060660 A CN200910060660 A CN 200910060660A CN 101781898 B CN101781898 B CN 101781898B
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- grab bucket
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Abstract
The invention relates to a grab type hydraulic automatic grabbing and dredging machine. In the technical scheme, a power takeoff is connected with the gearbox of an automobile engine; an oil pump is respectively connected with hydraulic components of a working mechanism through an operation control mechanism, the working mechanism comprises a grab lifting mechanism, a grab catching and releasing mechanism, a main arm lifting mechanism, a main arm rotating mechanism, a vehicle body supporting mechanism, a tipping bucket lifting mechanism, and a main arm is used for hoisting a grab through a steel rope which can change hydraulic force into mechanical force for control. The invention organically combines hydraulic transmission and mechanical transmission, solves the problem of transmission of working power and operation power of the grab catching and releasing mechanism so that the hydraulic oil rubber hose used for transmitting grab catching and releasing power and the steel rope used for transmitting the grab operating power can move synchronously with different speeds, thereby ensuring the safe operation of the hydraulic hose with the pressure up to 10MPa; the invention not only can be used for grabbing solid objects, but also can be used for dredging liquid sludge, thereby solving the problem of automation of the whole flow of sewage clean-up; and the invention also has the advantages of time conservation, labor conservation, high efficiency, convenient operation and high safety and reliability.
Description
Technical field
The invention belongs to a kind of excavation, dredger, be specifically related to a kind of lower well sludge automatic capturing carloader.
Background technology
Become the present situation of communal facilities pollution sources based on municipal sewage system, developed countries adopts the way of high pressure suction, desilting for sewer, because this equipment can only be for the dirt of single mud, be not suitable for China's actual conditions, and price is up to million people people's coin, and outside native land, product only enters market, the indivedual metropolis of China.Especially small and medium-sized cities, very large because the sewer solids stops up the loss caused.
At present, the domestic equipment for drainage dredging has following several: the one, adopt high pressure sewer cleaning equipment, and pass through 20MPa---the high-pressure water jet of 100MPa rinses mud.This kind of method water supply volume greatly, do not economize on water, and is not suitable for the cleaning of various solids; Two are 141 types, 130 type suction-type sewer scavengers and take out dung-cart, by the high pressure suction and pumping, by liquid dirt inspiration filth storage can, then transport.The method also is not suitable for the cleaning of various solids; The 3rd, the equipment cleaning that adopts machinery to grab bucket, the sewer cleaning equipment that an at present domestic company produces, its grab type inspection well dredging vehicle is mechanically operated two spade shapes grab bucket, each crawl capacity is little lightweight, can not capture heavier dirt, draw and dig depth as shallow, operating efficiency is not high.
Summary of the invention
The object of the present invention is to provide a kind of the be applicable to interior solids of manhole and the cleaning of semifluid thing, grip and crawl capacity are large; Easy to operate, stable working, safe and reliable, automatization level is high; The grab type hydraulic automatic grabbing and dredging machine laborsaving during joint, that efficiency is high.
Technical scheme of the present invention comprises automobile chassis, principal arm, hydraulic system, and power takeoff is connected with the gearbox of automobile engine; Principal arm is through wire rope lifting grab bucket, power takeoff is connected with oil pump, oil pump is connected with the hydraulic pressure components and parts of operating mechanism respectively through the operation controlling organization, and described operating mechanism comprises grab bucket elevating mechanism, grab bucket pick-and-place mechanism, principal arm elevating mechanism, principal arm rotating mechanism.
The said operating mechanism of the present invention also comprises body mount mechanism, tipping bucket elevating mechanism.
In described grab bucket elevating mechanism, the outlet of the oil pipe line interface that the operation controlling organization is corresponding with it connects cycloid hydraulic motor, cycloid hydraulic motor is connected with cable drum through worm reducer, cable drum is connected with the chain drive of reel cylinder axle upper sprocket wheel through an end spindle nose upper sprocket wheel, wire rope roll is around in cable drum, and principal arm is fixed in a termination of wire rope, and through pulley lifting grab bucket, the hydraulic oil sebific duct is wound in reel, pipe crimping is housed on reel and arranges hold-down mechanism.
When described cable drum is identical with the reel barrel dliameter, the gearratio of the sprocket wheel of cable drum and the sprocket wheel of reel is 2: 1.
In described grab bucket pick-and-place mechanism, grab bucket is comprised of the grab bucket shovel as the lotus petal sample more than two, the outlet of the oil pipe line interface that the operation controlling organization is corresponding with it connects the hydraulic oil sebific duct, and the hydraulic oil sebific duct is connected with the two-pass oil cylinder, and the two-pass oil cylinder is connected with the grab bucket shovel of grab bucket through connecting rod.
The present invention uses hydraulic principle, mechanics principle, hydraulic transmission technology, machine driving and mechanics of materials technology are organically combined and make both can grab solids, can draw again the high-power grab type hydraulic automatic grabbing and dredging machine of liquid mud, provide motive power by automobile engine, be converted into hydraulic coupling by power takeoff and oil pump, again by hydraulic motor and hydraulic oil cylinder driving principal arm lifting rotation mechanism, grab bucket lifting pick-and-place mechanism, automobile bucket tipping gear etc., hydraulic coupling is converted into to mechanical movement, has solved sewage and cleared up full-range automation issues.Compared with prior art, there is following advantage:
1, the present invention is by single easy manipulation handle, complete sewage automatic capturing, draw dig, lift, whole work of shipment, self-unloading, semifluid in sewer depth inspection shaft (mud, the grains of sand etc.) and solid (stone, fragment of brick, foreign material etc.) dirt can be captured totally, not stay dead angle; And not limited by well depth, the grab bucket depth can be controlled voluntarily; During joint, laborsaving, greatly improved operating efficiency, alleviated workman's labour intensity; Stain is not stayed in working site, has solved the secondary pollution that the labor cleaning brings, environmental.
2, the power of digging of drawing of the present invention's grab bucket reaches 2.2 tons, and lifting power reaches 260 kilograms, and this grab bucket opening angle can reach 180 °, opens and is lotus shape, is tubbiness after gathering.Two kinds of grab buckets of random outfit size, can dig the place needs according to drawing, and freely changes use.Each grab bucket can be cleared up needs according to dirt again, by multijaw, is transformed into two pawls: when grab bucket is only worked in the clamp mode with two pawls of symmetry, can capture like a cork the solids of the shapes such as rectangular, cylinder, bowlder stone; When working with multijaw grab, grab bucket is tubbiness after drawing in, can contain the semifluid dirt.
3, the present invention is easy to operate, safe and reliable, solved the transmission problem of operation power and the operation power of grab bucket pick-and-place mechanism, make to transmit the hydraulic oil sebific duct of grabbing receipts power and the synchronously not synchronized motion of wire rope that moves power for grabbing bucket, guarantee that pressure reaches the hydraulic oil sebific duct safe operation of 10MPa, and wire rope and hydraulic oil sebific duct two layer of space are arranged, solved the hydraulic oil sebific duct and wire rope interferes with each other, the problem that is wound around mutually, pipe crimping is housed on reel and arranges hold-down mechanism, overcome hydraulic oil sebific duct lack of alignment and overlapped phenomenon.
The present invention is not only applicable to drawing of municipal sewage system inspection shaft dirt and digs, starts shipment, loads and unloads, but also be widely used in organ, hotel, factories and miness, hospital, school, housing estate etc., locates sedimentary Automatic clearance in sewage reservoir, oil sump, biomass pool, septic tank.
The accompanying drawing explanation
The present invention is further described for the embodiment provided below in conjunction with accompanying drawing.
Fig. 1 is structural representation of the present invention.
The principal arm lifting that Fig. 2 is hydraulic circuit, grab bucket pick-and-place, grab bucket jacking system figure.
The principal arm rotary system figure that Fig. 3 is hydraulic circuit.
The tipping bucket jacking system figure that Fig. 4 is hydraulic circuit.
The body mount system drawing that Fig. 5 is hydraulic circuit.
Fig. 6 is the multipath hydraulic change-over valve schematic diagram.
Fig. 7 is pipe crimping arrange agencie schematic diagram.
The A-A sectional view that Fig. 8 is Fig. 7.
The specific embodiment
In Fig. 1, main body automobile chassis 1 adopts the former cartridge chassis of automobile of 48 kilowatts, and power takeoff 2 is connected with the gearbox of automobile engine; Swivel bearing 3 is loaded on automobile chassis 1, on swivel bearing 3, working platform is arranged, and principal arm 5 is loaded on column 4 through active pin shaft, and column 4 is fixed on working platform.Principal arm 5 is fixed in one termination of wire rope 6, grab bucket 7 is to shovel by 4 grab buckets as the lotus petal sample be formed by connecting (grab bucket provided in Chinese utility model publication number CN2758331 can be provided), upside down, 7 tops of grabbing bucket are hung on pulley 22 by U-loop the grab bucket spear.Through power takeoff 2, drive oil pump through operation controlling organization (being multipath hydraulic change-over valve), oil pipe line, oil cylinder or fluid motor-driven operating mechanism, form Hydraulic Power Transmission System.Described operating mechanism comprises grab bucket pick-and-place mechanism, grab bucket elevating mechanism, principal arm elevating mechanism, principal arm rotating mechanism, tipping bucket elevating mechanism, body mount mechanism.Cable drum 8, reel 9 are housed on working platform, and cycloid hydraulic motor is connected through 8 axles of worm reducer and cable drum, and cable drum 8 is connected with reel 9 axle upper sprocket wheel chain drives through an end spindle nose upper sprocket wheel.Hydraulic oil sebific duct 10 on reel 9 is connected with the two-pass oil cylinder 11 of grab bucket 7, and two-pass oil cylinder 11 is connected with the grab bucket shovel of grab bucket 7 through its connecting rod.Principal arm hoist cylinder one end is loaded on principal arm, and an end is loaded on column, by the lifting of the flexible drive of its oil cylinder principal arm.By the fluid motor-driven planet-cycloid reducer be loaded on the pinion rotation below reducer, pinion meshes with swivel bearing 3 gear wheels, realizes the rotation of working platform.Tipping bucket 12 is loaded on automobile chassis 1 rear portion, and unidirectional oil cylinder one end of tipping bucket is loaded on tipping bucket 12, one ends and is loaded on the fixing pair beam be connected with automobile chassis 1; Vehicle body leg 13 is loaded on automobile chassis 1 crossbeam side-lower, and vehicle body leg two-way cylinder is loaded on automobile chassis and vehicle body leg, by two-way cylinder, stretches supporting body or falls.
In Fig. 2, transmission of the present invention is hydraulic pressure, mechanical mixture transmission, and power source is the motor of automobile.Have a rectangle connecting hole on 1 of automobile engine 4 gearbox sidepiece structures, supporting power takeoff 2 can be installed.Power takeoff 2 upper flange are connected with oil pump 15 flanges, when motor 14 work, drive oil pump 15 rotations by power takeoff and mechanical energy are converted into to the pressure energy of hydraulic oil.Oil pump 15 intakes are connected with hydraulic oil container EQ3208 oil-out, and oil pump 15 outlets are numbered " 1 " oil circuit interface and are connected with in multipath hydraulic change-over valve, play the effect for hydraulic oil to multipath hydraulic change-over valve.Wire rope 6, one ends of winding on cable drum 8 are fixed on cable drum 8 cylindrical shells, and an end passes through three guide wheel for steel wires on the left and right end of principal arm 5 and walks around the pulley 22 of grab bucket 7 upper ends, finally is fixed on principal arm 5 lower lefts.
In view, numbering " 2.3 " oil circuit interface (multipath hydraulic change-over valve oil circuit interface), realize OMR-50 cycloid hydraulic motor 17 and coupled WPA worm reducer 18, the forward and backward of cable drum 8 and hold function by its action bars; Left end spindle nose upper sprocket wheel (Z=24, P=12.7) and reel 9 left end spindle nose upper sprocket wheels (Z=48, P=12.7) at cable drum 8, complete forward and backward, hold function by the chain drive reel.Owing in wire rope 6 winding processes, will passing through pulley 22, and hydraulic oil sebific duct 10 is not wound around through pulley 22, when grab bucket will promote 1 meter, wire rope 6 will be wound around 2 meters on cable drum 8, and hydraulic oil sebific duct 10 is servo-actuated parts, it when grab bucket promotes or descend speed Ying Yu with grab bucket identically, at described cable drum 8 and reel 9 barrel dliameters, when identical, the gearratio of the sprocket wheel of the sprocket wheel of cable drum 8 and reel 9 is 2: 1.
In limited area and space, want wire rope 6 and hydraulic oil sebific duct 10 are accomplished to orderly deployment and winding have certain difficulty, in design, adopted wire rope 6 transmissions to walk lower floor, hydraulic oil sebific duct 10 is walked upper strata, wire rope 6 has been arranged in principal arm 5 upper middle position, and hydraulic oil sebific duct 10 has been arranged in principal arm 5 both sides.Wire rope guide wheel and hydraulic oil sebific duct guide wheel are not installed on same power transmission shaft, but on column 4 and principal arm 5 hinging supporting shaft, a wire rope guide wheel has been installed, make wire rope 6 and hydraulic oil sebific duct 10 can not produce in motion the problem of mutually interfering, mutually being intertwined.
Numbering " 4.5 " oil pipe line interface (multipath hydraulic change-over valve oil circuit interface) in view, by its action bars, make two hydraulic oil sebific ducts 10 two-pass oil cylinder 11 fuel feeding to grab bucket 7, realizes that its grab bucket tightens up and decontrol function.Two hydraulic oil sebific ducts 10 are from multipath hydraulic change-over valve picks out, through swivel joint 20 → be wrapped on reel 9 → through pipe crimping arrange agencie 19 → through hydraulic oil sebific duct guide wheel 29, hydraulic oil sebific duct guide wheel 30 (each of left and right), hydraulic oil sebific duct guide wheel 31 (each of left and right) on principal arm 5, two pipe interfaces of the last two-pass oil cylinder 11 with in grab bucket are connected, and play the purpose to hydraulic cylinder confession hydraulic oil.A pipe crimping arrange agencie 19 of installing in reel 9 sides, the phenomenon of confusion when solving on reel 9 that the hydraulic oil sebific duct is wound around.
In view, numbering " 6.7 " oil pipe line interface (multipath hydraulic change-over valve oil circuit interface) connects principal arm hoist cylinder 21, give principal arm hoist cylinder 21 (stroke 800mm) fuel feeding be connected with column 4 with principal arm 5 by its action bars, realize the elevating function of principal arm 5.
In Fig. 3, in view, numbering " 8.9 " oil pipe line interface (multipath hydraulic change-over valve oil circuit interface) connects hydraulic motor, and hydraulic motor and swivel bearing are in transmission connection.By its action bars to hydraulic motor 23 (being the OMR-200 cycloid hydraulic motor) fuel feeding, hydraulic motor 23 bottoms and BLY-29-1.1 planet-cycloid reducer 24 and reducer shaft end fixedly pinion (with the interlock of swivel bearing gear wheel, itself does not rotate gear wheel, swivel bearing 3 endosomes and the working platform of gear wheel inside are fixed, with working platform, rotate) be connected, driving pinion just or reversion realize the requirement of 180 ° of its working platform left rotation and right rotation (the working platform face is equipped with column, principal arm).
In Fig. 4, numbering " 12 " oil pipe line interface (multipath hydraulic change-over valve oil circuit interface) in view, connect the unidirectional oil cylinder of tipping bucket, by its action bars, give the unidirectional oil cylinder 25 of tipping bucket (stroke 500mm) fuel feeding that drives the tipping bucket casing to tilt to rotate, realize the requirement that the tipping bucket casing flips an angle.Number 13 oil pipe line interfaces shuts with the M8 plug in construction.
In Fig. 5, view number " 10.11 " oil pipe line interface (multipath hydraulic change-over valve oil circuit interface), connect vehicle body leg two-way cylinder, by its action bars, support two-way cylinder 26 (stroke 300mm) fuel feeding that vehicle body is used during the work of giving, realize that it supports the requirement of vehicle body platform in construction.
In Fig. 6, multipath hydraulic change-over valve 16 is operation controlling organizations of complete machine exercises.The oil pump outlet is connected with numbering " 1 " the oil circuit interface in ZS-LIOE multipath hydraulic change-over valve 16 views.Other each oil circuit interface as previously mentioned.Six action bars (numbering is respectively 1-6 from left to right, does not provide numbering in view) are arranged on multipath hydraulic change-over valve 16, and in view number, " 14 " are connected with fuel tank with oil pipe, play the effect in loop.
Shown in Fig. 7, Fig. 8, in the pipe crimping arrange agencie, 9 axle heads of reel are equipped with sprocket wheel 38, and sprocket wheel 38 is in transmission connection through chain 36 and the sprocket wheel 35 that is contained in left and right rotation direction screw mandrel 32 axle heads.Left and right two T-nuts 33 (left and right revolve each) that revolve are arranged on left and right rotation direction screw mandrel 32.Be welded with on T-nut 33 and arrange pipe rocker 43, hydraulic oil sebific duct 10, through a rectangular opening of arranging on pipe rocker 43, is connected with axle sleeve 37 on T-nut 33, and there is the pressure roller 40 that is pressed in reel 9 surfaces axle sleeve 37 lower ends.Arrange between pipe rocker 43 and pressure roller 40 extension spring 42 is arranged, make arrangement pipe rocker 43 and pressure roller 40 all be pressed on the hydraulic oil sebific duct surface on reel 9.The rotation of left and right rotation direction screw mandrel 32 is to be driven by the sprocket wheel 38 that is contained in reel 9 axle heads and the sprocket wheel 35 use chains 36 that are contained in left and right rotation direction screw mandrel 32 axle heads.When T-nut 33 (left and right revolve each) during in left and right rotation direction screw mandrel 32 rotation, drive T-nut 33 and arrange the 43 regular movements in left and right of pipe rocker, final drive the orderly arrangement on reel 9 of hydraulic oil sebific duct 10, overcome lack of alignment and overlapped phenomenon.34 bearing supports that are left and right rotation direction screw mandrel, 39 is flap.41 is the reel bearing support.
Claims (7)
1. a grab type hydraulic automatic grabbing and dredging machine, comprise automobile chassis, principal arm, hydraulic system, and power takeoff is connected with the gearbox of automobile engine; Principal arm is through wire rope lifting grab bucket, it is characterized in that: power takeoff is connected with oil pump, oil pump is connected with the hydraulic pressure components and parts of operating mechanism respectively through the operation controlling organization, and described operating mechanism comprises grab bucket elevating mechanism, grab bucket pick-and-place mechanism, principal arm elevating mechanism, principal arm rotating mechanism;
In described grab bucket elevating mechanism, the oil pipe line interface that the operation controlling organization is corresponding with it connects cycloid hydraulic motor, cycloid hydraulic motor is connected with cable drum through worm reducer, cable drum is connected with the chain drive of reel cylinder axle upper sprocket wheel through an end spindle nose upper sprocket wheel, wire rope roll is around in cable drum, and principal arm is fixed in a termination of wire rope, and through pulley lifting grab bucket, the hydraulic oil sebific duct is wound in reel, pipe crimping is housed on reel and arranges hold-down mechanism;
Described pipe crimping is arranged hold-down mechanism: reel cylinder axle head is equipped with sprocket wheel, and this sprocket wheel is connected with the chain gear transmission that is contained in left and right rotation direction screw mandrel axle head through chain; Left and right two T-nuts that revolve are arranged on left and right rotation direction screw mandrel, the pipe of arrangement rocker is arranged on T-nut, the hydraulic oil sebific duct is through a rectangular opening of arranging on the pipe rocker, be connected with axle sleeve on T-nut, there is the pressure roller that is pressed on the reel surface axle sleeve lower end, arranges between pipe rocker and pressure roller extension spring is arranged.
2. grab type hydraulic automatic grabbing and dredging machine according to claim 1, it is characterized in that: when described cable drum is identical with the reel barrel dliameter, the gearratio of the sprocket wheel of cable drum and the sprocket wheel of reel is 2: 1.
3. grab type hydraulic automatic grabbing and dredging machine according to claim 1, it is characterized in that: in described grab bucket pick-and-place mechanism, grab bucket is comprised of the grab bucket shovel as the lotus petal sample more than two, the outlet of the oil pipe line interface that the operation controlling organization is corresponding with it connects the hydraulic oil sebific duct, the hydraulic oil sebific duct is connected with the two-pass oil cylinder, and the two-pass oil cylinder is connected with the grab bucket shovel of grab bucket through connecting rod.
4. grab type hydraulic automatic grabbing and dredging machine according to claim 1, it is characterized in that: in described principal arm elevating mechanism, principal arm rotating mechanism, principal arm is connected with column through active pin shaft, and column is fixed in working platform, under working platform, swivel bearing is arranged, swivel bearing is loaded on automobile chassis; The operation controlling organization oil pipe line interface corresponding with the principal arm elevating mechanism connects the principal arm hoist cylinder, and the principal arm hoist cylinder is loaded on principal arm and column; In the operation controlling organization, principal arm rotating mechanism oil pipe line interface connects hydraulic motor, and hydraulic motor and swivel bearing are in transmission connection.
5. grab type hydraulic automatic grabbing and dredging machine according to claim 1, it is characterized in that: described operating mechanism also comprises the tipping bucket elevating mechanism, the operation controlling organization oil pipe line interface corresponding with it connects the unidirectional oil cylinder of tipping bucket, tipping bucket is loaded on the automobile chassis rear portion, unidirectional oil cylinder one end of tipping bucket is loaded on tipping bucket, and the other end is loaded on be connected with automobile chassis fixing and pays on beam.
6. grab type hydraulic automatic grabbing and dredging machine according to claim 1, it is characterized in that: described operating mechanism also comprises body mount mechanism, operation in controlling organization corresponding with it oil pipe line interface connect vehicle body leg two-way cylinder, vehicle body leg two-way cylinder is loaded on automobile chassis and vehicle body leg, and the vehicle body leg is loaded under automobile chassis.
7. grab type hydraulic automatic grabbing and dredging machine according to claim 1, it is characterized in that: described operation controlling organization is multipath hydraulic change-over valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910060660 CN101781898B (en) | 2009-01-21 | 2009-01-21 | Grab type hydraulic automatic grabbing and dredging machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910060660 CN101781898B (en) | 2009-01-21 | 2009-01-21 | Grab type hydraulic automatic grabbing and dredging machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101781898A CN101781898A (en) | 2010-07-21 |
| CN101781898B true CN101781898B (en) | 2013-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910060660 Expired - Fee Related CN101781898B (en) | 2009-01-21 | 2009-01-21 | Grab type hydraulic automatic grabbing and dredging machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101781898B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2347811Y (en) * | 1998-11-09 | 1999-11-10 | 徐德顺 | Sludge lifting and self-discharging vehicle |
| CN2804182Y (en) * | 2005-07-05 | 2006-08-09 | 广东粤海汽车有限公司 | Sludge grab crane |
| CN1831253A (en) * | 2005-03-08 | 2006-09-13 | 姚实现 | Working device setted on one place and engineering machinery using it |
| CN201372452Y (en) * | 2009-01-21 | 2009-12-30 | 襄樊市志超环卫设备有限公司 | Automatic grab bucket-type hydraulic grasping and digging machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005239332A (en) * | 2004-02-25 | 2005-09-08 | Copros Co Ltd | Grab bucket |
-
2009
- 2009-01-21 CN CN 200910060660 patent/CN101781898B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2347811Y (en) * | 1998-11-09 | 1999-11-10 | 徐德顺 | Sludge lifting and self-discharging vehicle |
| CN1831253A (en) * | 2005-03-08 | 2006-09-13 | 姚实现 | Working device setted on one place and engineering machinery using it |
| CN2804182Y (en) * | 2005-07-05 | 2006-08-09 | 广东粤海汽车有限公司 | Sludge grab crane |
| CN201372452Y (en) * | 2009-01-21 | 2009-12-30 | 襄樊市志超环卫设备有限公司 | Automatic grab bucket-type hydraulic grasping and digging machine |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2005-239332A 2005.09.08 |
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| CN101781898A (en) | 2010-07-21 |
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