CN102587489B - Shaft dredging grab bucket truck - Google Patents
Shaft dredging grab bucket truck Download PDFInfo
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- CN102587489B CN102587489B CN201210084953.1A CN201210084953A CN102587489B CN 102587489 B CN102587489 B CN 102587489B CN 201210084953 A CN201210084953 A CN 201210084953A CN 102587489 B CN102587489 B CN 102587489B
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Abstract
The invention provides a shaft dredging grab bucket truck. The shaft dredging grab bucket truck comprises a moving truck body, a turn-over type bucket arranged on the moving truck body, a drivable rotary base arranged on the moving truck body and a drivable connection assembly arranged on the rotary base. The shaft dredging grab bucket truck further comprises a drivable retractor device arranged on the connection assembly; a grab bucket is arranged at the bottom end of the retractor device. The shaft dredging grab bucket truck can successfully push the grab bucket into blockage through the retractor device, so that the grab bucket can grab the blockage successfully, which is beneficial for the dredging work. At the same time, the shaft dredging grab bucket truck is mainly controlled by a control device in a remote control way, and the dredging speed and the precision are high.
Description
Technical field
The present invention relates to desilting equipment field, especially, relate to a kind of shaft dredging grab bucket truck.
Background technology
Urban discharging pipeline manhole often deposits, and at present, conventionally uses mechanical gripping trolley to carry out desilting work to manhole.This mechanical gripping trolley uses mechanical winch, by wire rope, grab bucket is put into well grab bucket, and the deadweight that relies on grab bucket crashes in the mud of manhole grab bucket, after grab bucket grabs mud, the extraction of grabbing bucket of mechanical gripping trolley, and then mud is drawn off from grab bucket.When mechanical gripping trolley uses grab bucket to capture deposit, the water content of deposit need reach more than 95%.When running into water content and be less than 80% deposit, deposit because of hardness larger, grab bucket can not be deep into inner crawl of deposit by himself gravity and silt thing up, thereby the desilting work of mechanical gripping trolley cannot be carried out smoothly.Therefore, the usability of existing mechanical gripping trolley is very restricted, and relies on the gravity of grab bucket self to stretch into deposit inside, and speed is slow, inefficiency, and inaccurate.
Summary of the invention
The object of the invention is to provide a kind of shaft dredging grab bucket truck, to solve the grab bucket of existing machinery grab trolley, cannot be deep into and silts the technical problem that in thing, thing is silted in crawl up up.
For achieving the above object, according to an aspect of the present invention, a kind of shaft dredging grab bucket truck is provided, comprise moving body, be installed on turnover tipping bucket on moving body, be installed on the drivable rotating basis on moving body and be installed on the drivable coupling assembling on rotating basis, shaft dredging grab bucket truck also comprises the drivable stretching device being installed on coupling assembling, and the end of stretching device is provided with a grab bucket;
Stretching device comprises pedestal cylinder and is placed on the telescopic arm in pedestal cylinder, and telescopic arm is drivable flexible along pedestal cylinder, and grab bucket is co-axially mounted on the end of telescopic arm.Stretching device also comprises can driving the second section arm being placed in pedestal cylinder and can driving and is placed on the 3rd in second section arm joint arm, and the first end of the 3rd joint arm is provided with grab bucket coaxially.Stretching device also comprises the 3rd oil cylinder and the 4th oil cylinder, and wherein, the cylinder barrel of the 3rd oil cylinder is fixedly installed in pedestal cylinder, the be permanently connected first end of second section arm of the piston rod of the 3rd oil cylinder; The cylinder barrel of the 4th oil cylinder is fixedly installed in pedestal cylinder, the piston rod of the 4th oil cylinder be permanently connected the 3rd joint arm first end.Coupling assembling comprises the first swing arm, the second swing arm, contiguous block, the first oil cylinder, the second oil cylinder, and wherein, contiguous block comprises first drift angle the second drift angle and the 3rd drift angle; The first end of the first end of the first swing arm and the second swing arm is installed on rotating basis pivotly; The second end of the first swing arm connects the first drift angle pivotly, and the second end of the second swing arm connects the second drift angle pivotly; The cylinder barrel of the first oil cylinder is installed on rotating basis pivotly, and the piston rod of the first oil cylinder is connected in the first swing arm pivotly; The cylinder barrel of the second oil cylinder is connected in the first drift angle pivotly; The two ends of pedestal cylinder are connected in respectively the piston rod of the 3rd drift angle and the second oil cylinder pivotly.
Further, stretching device also comprises the 3rd oil cylinder, and the cylinder barrel of the 3rd oil cylinder is fixedly installed in pedestal cylinder, and the piston rod of the 3rd oil cylinder is permanently connected on telescopic arm.
Further, coupling assembling also comprises the mount pad being connected on contiguous block, and two opposite ends of mount pad are connected in respectively the piston rod of the 3rd drift angle and the second oil cylinder pivotly, and pedestal cylinder is fixedly installed in mount pad.
Further, shaft dredging grab bucket truck also comprises the control device being arranged on moving body, and control device is controlled the first oil cylinder, the second oil cylinder, the 3rd oil cylinder and the 4th oil cylinder.
Further, shaft dredging grab bucket truck also comprises potentiometer, and potentiometer is installed on rotating basis, and potentiometer is electrically connected to control device.
Further, shaft dredging grab bucket truck also comprises angular transducer, and angular transducer is installed on the first swing arm, and angular transducer is electrically connected to control device.
Further, shaft dredging grab bucket truck also comprises inductor, and inductor is installed on pedestal cylinder, and inductor is electrically connected to control device.
Further, the two opposite sides of moving body are provided with adjustable support leg, and adjustable support leg is hydraulic leg, and control device is controlled adjustable support leg.
The present invention has following beneficial effect: shaft dredging grab bucket truck of the present invention can be pushed grab bucket to silt up in thing smoothly by stretching device, thereby make to grab bucket, captures and silts thing up smoothly, is conducive to carrying out smoothly of desilting work.Meanwhile, shaft dredging grab bucket truck of the present invention mainly adopts the mode of remote control to control by control device, and not only desilting speed is fast, and accuracy is high.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the complete vehicle structure schematic diagram of the shaft dredging grab bucket truck of the preferred embodiment of the present invention;
Fig. 2 is the structural representation of rotating basis, coupling assembling and the stretching device of the preferred embodiment of the present invention;
Fig. 3 is the structural representation of the stretching device of the preferred embodiment of the present invention; And
Fig. 4 to Fig. 7 is the working state schematic representation of the shaft dredging grab bucket truck of the preferred embodiment of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Referring to Fig. 1, shaft dredging grab bucket truck of the present invention comprises moving body 1, rotating basis 2, coupling assembling 3, stretching device 4, grab bucket 5, control device 6 and tipping bucket 7.Wherein, rotating basis 2 is arranged on the front portion of moving body 1, and tipping bucket 7 is arranged on the rear portion of moving body 1, and coupling assembling 3 is arranged on rotating basis 2, and stretching device 4 is installed on coupling assembling 3.The end that grab bucket 5 is co-axially mounted on stretching device 4 is installed.Control device 6 is arranged on moving body 1, and for controlling respectively the operation of rotating basis 2, coupling assembling 3 and stretching device 4.
Preferably, moving body 1 is chassis vehicle.Two opposite sides at moving body 1 are provided with adjustable support leg 11 symmetrically.Preferably, this adjustable support leg 11 is hydraulic leg.When shaft dredging grab bucket truck of the present invention is during in Construction State, by operating control device 6, can be so that adjustable support leg 11 be supported in ground, thus make shaft dredging grab bucket truck in level.
Refer to Fig. 2, rotating basis 2 is installed in rotation on the front portion of moving body 1, and rotating basis 2 can rotate freely 360 degree under the control of control device 6.Preferably, rotating basis 2 is worm gear arrangement, and it is meshed with a worm screw 23.By hydraulic pressure or electrical motor driven worm screw 23, worm screw 23 and then 2 rotations of driven rotary pedestal.Preferably, potentiometer (not shown) is installed on rotating basis 2, this potentiometer is converted into the signal of telecommunication by the angle of rotating basis 2 rotations and flows to control device 6, so that this angle recordings that control device 6 rotates rotating basis 2 is got off.Preferably, at the top of rotating basis 2, be provided with the first lug 21 and the second lug 22, to connect above-mentioned coupling assembling 3.
Coupling assembling 3 comprises the first swing arm 31, the second swing arm 32, contiguous block 33, the first oil cylinder 34, the second oil cylinder 35 and mount pad 36.The first end of the first end of this first swing arm 31 and the second swing arm 32 is installed on the first lug 21 of rotating basis 2 or rotating basis 2 pivotly.Preferably, the cross section of contiguous block 33 is roughly triangle.The second end of the second end of the first swing arm 31 and the second swing arm 32 is installed on respectively the first drift angle 331 and second drift angle 332 of contiguous block 33 pivotly.The piston rod 342 that the cylinder barrel 341 of the first oil cylinder 34 is connected in the second lug 22, the first oil cylinders 34 of rotating basis 2 or rotating basis 2 is pivotly connected in the middle part of the first swing arm 31 pivotly.The opposite end, bottom of mount pad 36 is respectively arranged with the 3rd lug 361 and the 4th lug 362.The 3rd drift angle 333 of contiguous block 33 is connected in the first end of mount pad 36 pivotly by the 3rd lug 361.The piston rod 352 that the cylinder barrel 351 of the second oil cylinder 35 is connected in the first drift angle 331, the second oil cylinders 35 of mounting blocks 33 is pivotly connected in the 4th lug 362 of the second end of mount pad 36 pivotly.Preferably, in the first swing arm 31, angular transducer (not shown) is also installed.
Above-mentioned mount pad 36 relies on contiguous block 33 and the second oil cylinder 35 to support.
Incorporated by reference to referring to Fig. 3, above-mentioned stretching device 4 is arranged on mount pad 36.Stretching device 4 comprises pedestal cylinder 41 and is placed on the telescopic arm in this pedestal cylinder 41.Telescopic arm can drive and stretch along pedestal cylinder, and at the end of telescopic arm, above-mentioned grab bucket 5 is installed.
In the present embodiment, telescopic arm comprises second section arm 42 and the 3rd joint arm 43.Wherein, pedestal cylinder 41 is installed on above-mentioned mount pad 36 regularly.Second section arm 42 is nested with in pedestal cylinder 41, and the first end of second section arm 42 exposes to pedestal cylinder 41.The 3rd joint arm 43 is nested with in second section arm 42, and the first end of the 3rd joint arm 43 exposes to the first end of second section arm 42.Preferably, on pedestal cylinder 41, inductor (not shown) is installed.
In other embodiment of the present invention, also above-mentioned mount pad 36 can be set, but the two ends of pedestal cylinder 41 are connected respectively to the 3rd above-mentioned drift angle 333 and the piston rod 352 of the second oil cylinder 35 pivotly.
The outer wall of pedestal cylinder 41 is also relatively provided with the 3rd oil cylinder 44 and the 4th oil cylinder 45.Wherein, the cylinder barrel 441 of the 3rd oil cylinder 44 is axially parallel with pedestal cylinder 41, and cylinder barrel 441 is fixedly mounted on the outer wall of pedestal cylinder 41.The be permanently connected first end of second section arm 42 of the piston rod 442 of the 3rd oil cylinder 44.Adopt the mounting means identical with the 3rd oil cylinder 44, the cylinder barrel 451 of the 4th oil cylinder 45 is fixedly mounted in the outer wall of pedestal cylinder 41, wherein, the piston rod 452 of the 4th oil cylinder 45 be permanently connected the 3rd joint arm 43 first end.Above-mentioned grab bucket 5 is co-axially mounted on the first end of the 3rd joint arm 43.
In other embodiments, the 3rd joint arm 43 and the 4th oil cylinder 45 also can be set, directly grab bucket 5 be co-axially mounted on to the first end of second section arm 42.
Shaft dredging grab bucket truck of the present invention is when unused state, and above-mentioned stretching device 4 is shelved on tipping bucket 7 by the contiguous block 33 of coupling assembling 3, to alleviate the load of the first oil cylinder 34 and the second oil cylinder 35.
Refer to Fig. 4 to Fig. 7, in use, during to the desilting of manhole 8, use procedure is roughly as follows for shaft dredging grab bucket truck of the present invention:
First, shaft dredging grab bucket truck of the present invention is driven to the side of manhole 8 by moving body 1.Then, the adjustable support leg 11 of controlling moving body 1 both sides by control device 6 is fallen, and makes adjustable support leg 11 be supported in ground, and the top cover that control device 6 is controlled tipping bucket 7 is opened.The piston rod 342 that control device 6 is controlled the first oil cylinder 34 moves upward, and piston rod 342 is past to ejection the first swing arm 31, the first swing arms 31 and then drive contiguous block 33 and stretching device 4 disengaging tipping buckets 7.
Then, control device 6 is controlled rotating basis 2 rotation the first angles, so that stretching device 4 is roughly positioned at the top of manhole 8.Then, control device 6 is controlled piston rod 352 outward movment of the second oil cylinder 35, and piston rod 352 erects the stretching device 4 being installed on mount pad 36.When if the stretching device of holding up 4 cannot align with manhole 8, control device 6 moves by controlling the first oil cylinder 34, thereby makes the first pendulum wall 31 and the second suitable angle of the second swing arm 32 rotation, and then stretching device 4 is alignd with manhole 8.The angular transducer that is installed on the first swing arm 31 is responded to the second angle of the first swing arm 31 rotations.In said process, when rotating basis 2 completes the rotation of the first angle and the first swing arm 31 and completes the rotation of the second angle, control device 6 is controlled potentiometer by a button simultaneously and is recorded the value of this first angle and the value that angular transducer records this second angle.Potentiometer sends to control device 6 by the value of this first angle with the form of first signal of telecommunication, and meanwhile, the form that angular transducer is converted into second signal of telecommunication by the value of this second angle sends to control device 6.
When stretching device 4 aligns with manhole 8, control device 6 sequential controls the 3rd oil cylinder 44 and the 4th oil cylinder 45, make second section arm 42 first along pedestal cylinder 41 toward downward-extension, make again the 3rd joint arm 43 along second section arm 42 toward downward-extension, thereby make to grab bucket 5 is deep into the silting up in thing of manhole 8 under the promotion of second section arm 42.Then, control device 6 control grab buckets 5 capture and silt thing up.
When grab bucket 5 grabs, silt up after thing, control device 6 moves by button sequential control the 4th oil cylinder 45 of operation and the 3rd oil cylinder 44, thereby makes the 3rd joint arm 43 and second section arm 42 successively toward retraction.When second section arm 42 touches the inductor on pedestal cylinder 41, inductor produces the first induced signal, and this first induced signal is sent to control device 6.Control device 6 is controlled the first oil cylinder 34 operations after receiving this first induced signal, thereby make the first pendulum wall 31 and the second swing arm 32 back rotate the second above-mentioned angle, control device 6 is then controlled rotating basis 2 and is back rotated the first above-mentioned angle, and making to grab bucket 5, to rotate to the centre of moving body relative with tipping bucket 7.When grab bucket 5 is positioned at the top of tipping bucket 7, the top cover of tipping bucket 7 is opened, thereby the inductor on pedestal cylinder 41 produces the second induced signal, and this second induced signal is sent to control device 6.Then, control device 6 opens according to this second actuated signal control grab bucket 5, will silt thing up and be unloaded in tipping bucket 7.
According to operating principle as above, control device 6 is controlled rotating basis 2 rotation the first angles again according to above-mentioned first signal of telecommunication of receiving, then, control device 6 is controlled the first oil cylinder 34 operations again according to above-mentioned second signal of telecommunication of receiving, make the first swing arm 31 and the second swing arm 32 rotate the second angle simultaneously, and then the stretching device 4 of erectting is alignd again with manhole 8.In the same manner, grab bucket 5 again enters into the interior crawl of manhole 8 and silts thing up under the effect of stretching device 4, and will silt thing up and be unloaded in tipping bucket 7.
When the front portion of tipping bucket 7, pile up and have manyly while silting thing up, control device 6 is controlled tipping buckets 7 toward rear-inclined, and what make tipping bucket 7 anterior silts the rear portion that thing is poured tipping bucket 7 into up, so that the front portion of tipping bucket 7 continues to load, silts thing up.
When tipping bucket 7, fill while silting thing up, moving body 1 is carried to soot by tipping bucket 7, will silt thing up and be unloaded to soot.
As known from the above, shaft dredging grab bucket truck of the present invention can be pushed grab bucket 5 to silt up in thing smoothly by stretching device 4, thereby 5 smooth crawls that make to grab bucket are silted thing up, are conducive to carrying out smoothly of desilting work.Meanwhile, shaft dredging grab bucket truck of the present invention mainly adopts the mode of remote control to control by control device 6, and not only desilting speed is fast, and accuracy is high.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a shaft dredging grab bucket truck, comprise moving body (1), be installed on turnover tipping bucket (7) on described moving body (1), be installed on the drivable rotating basis (2) on described moving body (1) and be installed on the drivable coupling assembling (3) on described rotating basis (2), it is characterized in that, described shaft dredging grab bucket truck also comprises the drivable stretching device (4) being installed on described coupling assembling (3), and the end of described stretching device (4) is provided with a grab bucket (5);
Described stretching device (4) comprises pedestal cylinder (41) and is placed on the telescopic arm in described pedestal cylinder (41), and described telescopic arm is drivable flexible along described pedestal cylinder (41), and described grab bucket (5) is co-axially mounted on the end of described telescopic arm;
Described stretching device (4) also comprises driving and is placed on the second section arm (42) in described pedestal cylinder (41) and can drives the 3rd joint arm (43) being placed in described second section arm (42), and the first end of described the 3rd joint arm (43) is provided with described grab bucket (5) coaxially;
Described stretching device (4) also comprises the 3rd oil cylinder (44) and the 4th oil cylinder (45), wherein, the cylinder barrel (441) of described the 3rd oil cylinder (44) is fixedly installed in described pedestal cylinder (41), the be permanently connected first end of described second section arm (42) of the piston rod (442) of described the 3rd oil cylinder (44); The cylinder barrel (451) of described the 4th oil cylinder (45) is fixedly installed in described pedestal cylinder (41), the piston rod (452) of described the 4th oil cylinder (45) be permanently connected described the 3rd joint arm (43) first end;
Described coupling assembling (3) comprises the first swing arm (31), the second swing arm (32), contiguous block (33), the first oil cylinder (34), the second oil cylinder (35), wherein, described contiguous block (33) comprises the first drift angle (331) second drift angles (332) and the 3rd drift angle (333); The first end of the first end of described the first swing arm (31) and described the second swing arm (32) is installed on described rotating basis (2) pivotly;
The second end of described the first swing arm (31) connects described the first drift angle (331) pivotly, and the second end of described the second swing arm (32) connects described the second drift angle (332) pivotly;
The cylinder barrel (341) of described the first oil cylinder (34) is installed on described rotating basis (2) pivotly, and the piston rod (342) of described the first oil cylinder (34) is connected in described the first swing arm (31) pivotly;
The cylinder barrel (351) of described the second oil cylinder (35) is connected in described the first drift angle (331) pivotly;
The two ends of described pedestal cylinder (41) are connected in respectively the piston rod (352) of described the 3rd drift angle (333) and described the second oil cylinder (35) pivotly.
2. shaft dredging grab bucket truck according to claim 1, it is characterized in that, described stretching device (4) also comprises the 3rd oil cylinder (44), the cylinder barrel (441) of described the 3rd oil cylinder (44) is fixedly installed in described pedestal cylinder (41), and the piston rod (442) of described the 3rd oil cylinder (44) is permanently connected on described telescopic arm.
3. shaft dredging grab bucket truck according to claim 1, it is characterized in that, described coupling assembling (3) also comprises the mount pad (36) being connected on described contiguous block (33), two opposite ends of described mount pad (36) are connected in respectively the piston rod (352) of described the 3rd drift angle (333) and described the second oil cylinder (35) pivotly, and described pedestal cylinder (41) is fixedly installed in described mount pad (36).
4. shaft dredging grab bucket truck according to claim 1, it is characterized in that, described shaft dredging grab bucket truck also comprises the control device (6) being arranged on moving body (1), and described control device (6) is controlled described the first oil cylinder (34), described the second oil cylinder (35), described the 3rd oil cylinder (44) and described the 4th oil cylinder (45).
5. shaft dredging grab bucket truck according to claim 4, is characterized in that, described shaft dredging grab bucket truck also comprises potentiometer, and described potentiometer is installed on described rotating basis (2), and described potentiometer is electrically connected to described control device.
6. shaft dredging grab bucket truck according to claim 4, is characterized in that, described shaft dredging grab bucket truck also comprises angular transducer, and described angular transducer is installed on described the first swing arm (31), and described angular transducer is electrically connected to described control device.
7. shaft dredging grab bucket truck according to claim 4, is characterized in that, described shaft dredging grab bucket truck also comprises inductor, and described inductor is installed on described pedestal cylinder (41), and described inductor is electrically connected to described control device.
8. shaft dredging grab bucket truck according to claim 4, it is characterized in that, the two opposite sides of described moving body (1) are provided with adjustable support leg (11), and described adjustable support leg (11) is hydraulic leg, and described control device (6) is controlled described adjustable support leg (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210084953.1A CN102587489B (en) | 2012-03-27 | 2012-03-27 | Shaft dredging grab bucket truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210084953.1A CN102587489B (en) | 2012-03-27 | 2012-03-27 | Shaft dredging grab bucket truck |
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| Publication Number | Publication Date |
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| CN102587489A CN102587489A (en) | 2012-07-18 |
| CN102587489B true CN102587489B (en) | 2014-01-22 |
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| CN201210084953.1A Active CN102587489B (en) | 2012-03-27 | 2012-03-27 | Shaft dredging grab bucket truck |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733476A (en) * | 2012-07-26 | 2012-10-17 | 淮安市苏通市政机械有限公司 | Intelligent dredging vehicle for sewer dredging |
| JP5873840B2 (en) * | 2013-06-14 | 2016-03-01 | 日立建機株式会社 | Multi-arm hydraulic system and deep excavator |
| CN106320510B (en) * | 2016-11-16 | 2019-04-05 | 湖南奇思环保设备制造有限公司 | Blowdown apparatus and deep-well dredging grab bucket truck |
| CN108360661A (en) * | 2018-01-15 | 2018-08-03 | 张启志 | A kind of town road draining Accrete clearing device |
| CN110145017B (en) * | 2019-06-06 | 2020-10-27 | 夏献云 | Municipal works sewer desilting equipment |
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|---|---|---|---|---|
| EP0568758A1 (en) * | 1992-05-04 | 1993-11-10 | MANITOU COSTRUZIONI INDUSTRIALI S.r.l. | A multi-use mobile elevator excavator |
| CN2237070Y (en) * | 1995-07-10 | 1996-10-09 | 佟圣英 | Mud removing cart for sewer pipe net |
| CN201907957U (en) * | 2010-12-01 | 2011-07-27 | 泸州长起特种起重设备有限公司 | Double oil cylinder telescopic arm forklift loader |
| CN202509620U (en) * | 2012-03-27 | 2012-10-31 | 湖南奇思环保有限公司 | Dredging grabbing vehicle for vertical shaft |
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2012
- 2012-03-27 CN CN201210084953.1A patent/CN102587489B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0568758A1 (en) * | 1992-05-04 | 1993-11-10 | MANITOU COSTRUZIONI INDUSTRIALI S.r.l. | A multi-use mobile elevator excavator |
| CN2237070Y (en) * | 1995-07-10 | 1996-10-09 | 佟圣英 | Mud removing cart for sewer pipe net |
| CN201907957U (en) * | 2010-12-01 | 2011-07-27 | 泸州长起特种起重设备有限公司 | Double oil cylinder telescopic arm forklift loader |
| CN202509620U (en) * | 2012-03-27 | 2012-10-31 | 湖南奇思环保有限公司 | Dredging grabbing vehicle for vertical shaft |
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