CN105291264A - Auxiliary lifting landing leg, lifting method and engineering machine - Google Patents
Auxiliary lifting landing leg, lifting method and engineering machine Download PDFInfo
- Publication number
- CN105291264A CN105291264A CN201510802442.2A CN201510802442A CN105291264A CN 105291264 A CN105291264 A CN 105291264A CN 201510802442 A CN201510802442 A CN 201510802442A CN 105291264 A CN105291264 A CN 105291264A
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- CN
- China
- Prior art keywords
- supporting leg
- leg section
- hydraulic
- hydraulic jack
- oil
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- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/0806—Details; Accessories
- B28C5/0856—Supporting frames or structures, e.g. supporting wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C9/00—General arrangement or layout of plant
- B28C9/04—General arrangement or layout of plant the plant being mobile, e.g. mounted on a carriage or a set of carriages
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Actuator (AREA)
Abstract
The invention discloses an auxiliary lifting landing leg, a lifting method and an engineering machine. The auxiliary lifting landing leg of the engineering machine comprises an upper landing leg section (2) connected with a rack (1), a lower landing leg section (3) in guiding and moving connection with the upper landing leg section (2), a fixing plate connected with the lower landing leg section (3), an oil cylinder base (4) connected with the fixing plate, a hydraulic oil cylinder (5) with the two ends hinged to the rack (1) and the oil cylinder base (4) respectively, at least one fixed positioning hole (6) formed in the upper landing leg section (2), at least two movable positioning holes (7), a fixing rod (8) penetrating the fixed positioning holes (6) and the movable positioning holes (7), and a hydraulic system driving the hydraulic oil cylinder (5) to stretch and contract, wherein the movable positioning holes (7) are formed in the lower landing leg section (3) in the vertical direction at intervals and correspond to the fixed positioning holes (6). By means of stretching of the oil cylinder, the lower landing leg section (3) is driven to extend out, and by means of contraction of the oil cylinder, the lower landing leg section (3) is driven to contract.
Description
Technical field
The present invention relates to engineering machinery field, especially relate to a kind of assistance for lifting supporting leg, assistance for lifting supporting leg elevating method and there is the engineering machinery of this assistance for lifting supporting leg.
Background technology
Relate to the reduction of supporting leg in many engineering machinery, such as, when dragging concrete pump, the supporting leg of concrete pump will go up receipts, and during installation, the supporting leg of concrete pump will put down.Realize that the elevating movement of lifting landing leg is many to be realized by hydraulic jack, the syndeton of existing lifting landing leg and hydraulic jack is that hydraulic jack is placed in the inner sleeve of lifting landing leg, two ear seat of hydraulic jack by bearing pin respectively ear seat be connected with ear seat, and the ear seat that lifting landing leg is connected is connected on the outer sleeve of lifting landing leg, oil line pipe is arranged on the outside of hydraulic cylinder.The complex structure that this hydraulic jack is connected with lifting landing leg, hydraulic cylinder two ear seat connects the length increasing whole sleeve, when supporting leg cross section is less, when length is shorter, is structurally difficult to install; In operation process, hydraulic jack need bear the weight of equipment all the time, less stable, and energy consumption is higher, the easy loss of hydraulic part.
Summary of the invention
On the one hand, in order to overcome the defect of prior art, solve that in engineering machinery, to be difficult to install supporting leg cross section less, the technical problem of the telescopic outrigger that length is shorter, improve the flexibility of landing leg stretching, the object of the invention is to: a kind of assistance for lifting supporting leg for engineering machinery is provided.
In order to solve the problems of the technologies described above, the invention provides a kind of assistance for lifting supporting leg, for engineering machinery, described engineering machinery comprises frame, and described assistance for lifting supporting leg comprises the upper supporting leg section be connected with described frame; The lower supporting leg section be connected with described upper supporting leg section guiding movement; The oil cylinder seat be connected with bottom described lower supporting leg section; Two ends respectively with described frame and the hinged hydraulic jack of oil cylinder seat; At least one is arranged on the stationary positioned hole in described upper supporting leg section; At least two to be arranged in lower supporting leg section interval along the vertical direction and to arrange, the running fix hole corresponding with described stationary positioned hole; For being installed on the fixed bar in described stationary positioned hole and running fix hole in use; Drive the hydraulic system that described hydraulic jack is flexible.
As further improvement opportunity scheme, assistance for lifting supporting leg provided by the invention, described hydraulic system comprises hydraulic oil container; The hydraulic oil pump be communicated with described hydraulic oil container; Be connected on the check valve on the flowline of described hydraulic oil pump; Be arranged on the overflow valve between the flowline of described hydraulic oil pump and oil return pipe; The 3-position 4-way that pressure oil port is communicated with the flowline of described hydraulic oil pump, oil return opening is communicated with described hydraulic oil container or three six logical banked direction control valves; Hydraulic jack; The rodless cavity of described hydraulic jack is communicated with two actuator ports of 3-position 4-way or three six logical banked direction control valves respectively with rod chamber.
In order to overcome the defect of prior art, second aspect, the object of the invention is to: provide a kind of engineering machinery, this project machinery overcomes that to be not easy to install supporting leg cross section less, a difficult problem for the telescopic outrigger that length is shorter, and improve the flexibility of landing leg stretching.
In order to solve the problems of the technologies described above, engineering machinery provided by the invention, has the assistance for lifting supporting leg described in aforementioned any one.
As optimal technical scheme, engineering machinery provided by the invention, described engineering machinery is that stirring is dragged pump, dragged pump, or mortar pump.
In order to overcome the defect of prior art, the third aspect, the object of the invention is to: the elevating method that a kind of assistance for lifting supporting leg is provided.
In order to solve the problems of the technologies described above, the elevating method of assistance for lifting supporting leg provided by the invention, for the lifting of engineering machinery assistance for lifting supporting leg, described engineering machinery comprises frame, and described assistance for lifting supporting leg comprises the upper supporting leg section be connected with described frame; The lower supporting leg section be connected with described upper supporting leg section guiding movement; The fixed head be connected with bottom described lower supporting leg section; The oil cylinder seat be connected with described fixed head; Two ends respectively with described frame and the hinged hydraulic jack of oil cylinder seat; At least one is arranged on the stationary positioned hole in described upper supporting leg section; At least two to be arranged in lower supporting leg section interval along the vertical direction and to arrange, the running fix hole corresponding with described stationary positioned hole; For being installed on the fixed bar in described stationary positioned hole and running fix hole in use; Drive the hydraulic system that described hydraulic jack is flexible; Described hydraulic system comprises hydraulic oil container; The hydraulic oil pump be communicated with described hydraulic oil container; Be connected on the check valve on the flowline of described hydraulic oil pump; Be arranged on the overflow valve between the flowline of described hydraulic oil pump and oil return pipe; The 3-position 4-way that pressure oil port is communicated with the flowline of described hydraulic oil pump, oil return opening is communicated with described hydraulic oil container or three six logical banked direction control valves; Hydraulic jack; The rodless cavity of described hydraulic jack is communicated with two actuator ports of 3-position 4-way or three six logical banked direction control valves respectively with rod chamber; Comprise the following steps in lifting process:
During elongation, transferred to by the fixed bar be installed in stationary positioned hole and running fix hole, operation hydraulic system makes the rodless cavity oil-feed of hydraulic jack, rod chamber oil return, and the piston rod of hydraulic jack extends, and promotes oil cylinder seat and drives fixed head and lower supporting leg section to extend downwards; When arrival travel position, fixed bar is installed in stationary positioned hole and running fix hole and lower supporting leg section is fixed; Operation hydraulic system makes the rodless cavity oil return of hydraulic jack, and rod chamber oil-feed, makes hydraulic jack no longer bear support force, and also make lower supporting leg section not bear the pulling force of hydraulic jack, support force is transferred in upper supporting leg section and lower supporting leg section simultaneously;
During retraction, operation hydraulic system makes the rodless cavity oil-feed of hydraulic jack, rod chamber oil return, upper supporting leg section and the support force suffered by lower supporting leg section is made to transfer to hydraulic jack, upper supporting leg section and lower supporting leg section no longer bear support force, also make lower supporting leg section not bear the tension force of hydraulic jack simultaneously, the fixed bar be installed in stationary positioned hole and running fix hole is transferred to, operation hydraulic system makes the rod chamber oil-feed of hydraulic jack, rodless cavity oil return, the piston rod of hydraulic jack is retracted, and pulls oil cylinder seat to drive fixed head and lower supporting leg section upwards to retract; When arrival travel position, fixed bar is installed in stationary positioned hole and running fix hole and lower supporting leg section is fixed, regain lower supporting leg section.
Beneficial effect of the present invention: technical scheme provided by the invention, hydraulic jack is arranged on the outside of upper supporting leg section and lower supporting leg section, and oil line pipe is also arranged on the outside of supporting leg.The structure of lifting landing leg is simplified greatly, and the ear seat on hydraulic cylinder top is connected in frame, and supporting leg cross section of being more convenient for is less, installs when length is shorter, easy to maintenance; In course of normal operation, in non-telescoping process, the weight of hydraulic jack not load bearing equipment, stability is better, the longer service life of hydraulic component.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is that pump configuration schematic diagram is dragged in the stirring that embodiment has an assistance for lifting supporting leg;
Fig. 2 is the main TV structure schematic diagram of embodiment assistance for lifting supporting leg;
Fig. 3 is the upper supporting leg section of embodiment assistance for lifting supporting leg and lower supporting leg segment structure position view;
Fig. 4 is the lower supporting leg segment structure schematic diagram of embodiment assistance for lifting supporting leg;
Fig. 5 is the hydraulic system principle figure of embodiment assistance for lifting supporting leg.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Pump and assistance for lifting supporting leg thereof are dragged in stirring as shown in Figures 1 to 4, stirring drags one end of pump to be provided with two cover assistance for lifting supporting legs, assistance for lifting supporting leg comprises and stirs the upper supporting leg section 2 of dragging pump frame 1 to be connected, to lead the lower supporting leg section 3 be slidably connected with upper supporting leg section 2, the fixed head be fixedly connected with bottom lower supporting leg section 3, the oil cylinder seat 4 be connected with fixed head; The hinged hydraulic jack 5 of hinge is passed through with frame 1 and oil cylinder seat 4 respectively in two ends, several are arranged on the stationary positioned hole 6 in upper supporting leg section 2, several to be arranged in lower supporting leg section 3 interval along the vertical direction and to arrange, the running fix hole 7 corresponding with the stationary positioned hole 6 in upper supporting leg section 2, for being installed on the fixed bar 8 in stationary positioned hole 6 and running fix hole 7 in use, drive the hydraulic system that hydraulic jack 5 is flexible.Hydraulic jack is arranged on the outside of upper supporting leg section and lower supporting leg section, and oil line pipe is also arranged on the outside of supporting leg, and the structure of lifting landing leg is simplified greatly, the ear seat on hydraulic cylinder top is connected in frame, and supporting leg cross section of being more convenient for is less, installs when length is shorter, easy to maintenance, stability is better.
The flexible hydraulic system of hydraulic jack 5 is driven to comprise hydraulic oil container as shown in Figure 5, the hydraulic oil pump 9 be communicated with hydraulic oil container, be connected on the check valve 12 on the flowline of hydraulic oil pump 9, be arranged on the overflow valve 11 between the flowline of hydraulic oil pump 9 and oil return pipe, three six that pressure oil port is communicated with the flowline of hydraulic oil pump 9, oil return opening is communicated with hydraulic oil container logical banked direction control valves 10, hydraulic jack 5, the rodless cavity of hydraulic jack is communicated with two actuator ports of banked direction control valves 10 respectively with rod chamber.The quantity of banked direction control valves is identical with the quantity of assistance for lifting supporting leg, in parallel between multiple banked direction control valves, and each banked direction control valves controls the flexible of a hydraulic jack.
In operation process, when assistance for lifting supporting leg extends, the fixed bar 8 be installed in stationary positioned hole 6 and running fix hole 7 is transferred to, operation banked direction control valves 10 makes the rodless cavity oil-feed of hydraulic jack 5, rod chamber oil return, the piston rod of hydraulic jack 5 extends, and promotes oil cylinder seat 4 and drives fixed head and lower supporting leg section 3 to extend downwards; When arrival travel position, fixed bar 8 is installed in stationary positioned hole 6 and running fix hole 7 and lower supporting leg section 3 is fixed; Operation hydraulic system makes a small amount of oil return of the rodless cavity of hydraulic jack 5, a small amount of oil-feed of rod chamber, makes hydraulic jack 5 no longer bear support force, and also make lower supporting leg section 3 not bear the pulling force of hydraulic jack 5, support force is transferred in upper supporting leg section 2 and lower supporting leg section 3 simultaneously; In course of normal operation, after upper supporting leg section and lower supporting leg section are fixing, the weight of hydraulic jack not load bearing equipment, stability is better, the longer service life of hydraulic component.
When assistance for lifting supporting leg is retracted, operation banked direction control valves 10 makes a small amount of oil-feed of the rodless cavity of hydraulic jack 5, the a small amount of oil return of rod chamber, upper supporting leg section 2 and the support force suffered by lower supporting leg section 3 is made to transfer to hydraulic jack 5, upper supporting leg section 2 and lower supporting leg section 3 no longer bear support force, also make lower supporting leg section 3 not bear the tension force of hydraulic jack 5 simultaneously, the fixed bar 8 be installed in stationary positioned hole 6 and running fix hole 7 is transferred to, operation hydraulic system makes the rod chamber oil-feed of hydraulic jack 5, rodless cavity oil return, the piston rod of hydraulic jack 5 is retracted, oil cylinder seat 4 is pulled to drive fixed head and lower supporting leg section 3 upwards to retract, when arrival travel position, fixed bar 8 is installed in stationary positioned hole 6 and running fix hole 7 and lower supporting leg section 3 is fixed, regain lower supporting leg section 3.
Obviously, the invention is not restricted to above preferred embodiment, in the spirit that also can limit in the claims in the present invention and description, carry out conversion and the improvement of various ways, can same technical problem be solved, and obtain the technique effect of expection, therefore not repeat.Those of ordinary skill in the art can from content disclosed by the invention directly or all schemes associated, as long as within the spirit limited in claim, also belong to protection scope of the present invention.
Claims (5)
1. an assistance for lifting supporting leg, for engineering machinery, described engineering machinery comprises frame (1), it is characterized in that: described assistance for lifting supporting leg comprises the upper supporting leg section (2) be connected with described frame (1); The lower supporting leg section (3) be connected with described upper supporting leg section (2) guiding movement; The fixed head be connected with described lower supporting leg section (3) bottom; The oil cylinder seat (4) be connected with described fixed head; Two ends respectively with described frame (1) and the hinged hydraulic jack (5) of oil cylinder seat (4); At least one is arranged on the stationary positioned hole (6) on described upper supporting leg section (2); At least two to be arranged on lower supporting leg section (3) interval along the vertical direction and to arrange, the running fix hole (7) corresponding with described stationary positioned hole (6); For being installed on the fixed bar (8) in described stationary positioned hole (6) and running fix hole (7) in use; Drive the hydraulic system that described hydraulic jack (5) is flexible.
2. assistance for lifting supporting leg according to claim 1, is characterized in that: described hydraulic system comprises hydraulic oil container; The hydraulic oil pump (9) be communicated with described hydraulic oil container; Be connected on the check valve (12) on the flowline of described hydraulic oil pump (9); Be arranged on the overflow valve (11) between the flowline of described hydraulic oil pump (9) and oil return pipe; The 3-position 4-way that pressure oil port is communicated with the flowline of described hydraulic oil pump (9), oil return opening is communicated with described hydraulic oil container or three six logical banked direction control valves (10); Hydraulic jack (5); The rodless cavity of described hydraulic jack is communicated with two actuator ports of 3-position 4-way or three six logical banked direction control valves (10) respectively with rod chamber.
3. an engineering machinery, is characterized in that: have described in any one of claim 1 or 2 assistance for lifting supporting leg.
4. engineering machinery according to claim 3, is characterized in that: described engineering machinery is that stirring is dragged pump, dragged pump, or mortar pump.
5. an elevating method for assistance for lifting supporting leg, for the lifting of engineering machinery assistance for lifting supporting leg, described engineering machinery comprises frame (1), it is characterized in that: described assistance for lifting supporting leg comprises the upper supporting leg section (2) be connected with described frame (1); The lower supporting leg section (3) be connected with described upper supporting leg section (2) guiding movement; The fixed head be connected with described lower supporting leg section (3) bottom; The oil cylinder seat (4) be connected with described fixed head; Two ends respectively with described frame (1) and the hinged hydraulic jack (5) of oil cylinder seat (4); At least one is arranged on the stationary positioned hole (6) on described upper supporting leg section (2); At least two to be arranged on lower supporting leg section (3) interval along the vertical direction and to arrange, the running fix hole (7) corresponding with described stationary positioned hole (6); For being installed on the fixed bar (8) in described stationary positioned hole (6) and running fix hole (7) in use; Drive the hydraulic system that described hydraulic jack (5) is flexible; Described hydraulic system comprises hydraulic oil container; The hydraulic oil pump (9) be communicated with described hydraulic oil container; Be connected on the check valve (12) on the flowline of described hydraulic oil pump (9); Be arranged on the overflow valve (11) between the flowline of described hydraulic oil pump (9) and oil return pipe; The 3-position 4-way that pressure oil port is communicated with the flowline of described hydraulic oil pump (9), oil return opening is communicated with described hydraulic oil container or three six logical banked direction control valves (10); Hydraulic jack (5); The rodless cavity of described hydraulic jack is communicated with two actuator ports of 3-position 4-way or three six logical banked direction control valves (10) respectively with rod chamber; Comprise the following steps in lifting process:
During elongation, the fixed bar (8) that will be installed in stationary positioned hole (6) and running fix hole (7) is transferred to, operation hydraulic system makes the rodless cavity oil-feed of hydraulic jack (5), rod chamber oil return, the piston rod of hydraulic jack (5) extends, and promotes oil cylinder seat (4) and drives fixed head and lower supporting leg section (3) to extend downwards; When arrival travel position, fixed bar (8) is installed in stationary positioned hole (6) and running fix hole (7) and lower supporting leg section (3) is fixed; Operation hydraulic system makes the rodless cavity oil return of hydraulic jack (5), rod chamber oil-feed, make hydraulic jack (5) no longer bear support force, also make lower supporting leg section (3) not bear the pulling force of hydraulic jack (5), support force is transferred in upper supporting leg section (2) and lower supporting leg section (3) simultaneously;
During retraction, operation hydraulic system makes the rodless cavity oil-feed of hydraulic jack (5), rod chamber oil return, upper supporting leg section (2) and the support force suffered by lower supporting leg section (3) is made to transfer to hydraulic jack (5), upper supporting leg section (2) and lower supporting leg section (3) no longer bear support force, also make lower supporting leg section (3) not bear the tension force of hydraulic jack (5) simultaneously, the fixed bar (8) that will be installed in stationary positioned hole (6) and running fix hole (7) is transferred to, operation hydraulic system makes the rod chamber oil-feed of hydraulic jack (5), rodless cavity oil return, the piston rod of hydraulic jack (5) is retracted, oil cylinder seat (4) is pulled to drive fixed head and lower supporting leg section (3) upwards to retract, when arrival travel position, fixed bar (8) is installed in stationary positioned hole (6) and running fix hole (7) and lower supporting leg section (3) is fixed, regain lower supporting leg section (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510802442.2A CN105291264A (en) | 2015-11-19 | 2015-11-19 | Auxiliary lifting landing leg, lifting method and engineering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510802442.2A CN105291264A (en) | 2015-11-19 | 2015-11-19 | Auxiliary lifting landing leg, lifting method and engineering machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105291264A true CN105291264A (en) | 2016-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510802442.2A Pending CN105291264A (en) | 2015-11-19 | 2015-11-19 | Auxiliary lifting landing leg, lifting method and engineering machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105291264A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108221596A (en) * | 2016-12-15 | 2018-06-29 | 维特根有限公司 | For carrying out the building machinery of operation to paving concrete pavement |
| CN110371217A (en) * | 2019-07-26 | 2019-10-25 | 广东博智林机器人有限公司 | Chassis assembly and its control method, carrier, construction robot |
| CN112959514A (en) * | 2021-03-26 | 2021-06-15 | 中铁科工集团轨道交通装备有限公司 | Movable mixing station with hydraulic jacking system |
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| DE2341035A1 (en) * | 1973-08-14 | 1975-02-27 | Bernhard Hauschopp | Revolving mortar-mixer and pump - consists of trough with lifting column on one side and slide valve into pump compartment on another side |
| GB2117260A (en) * | 1982-03-15 | 1983-10-12 | Sei Inc | Concrete mixing device |
| CN102923584A (en) * | 2011-08-08 | 2013-02-13 | 长沙桑尼重工机械有限公司 | Intelligent lorry crane with intelligent operation control system |
| CN203051269U (en) * | 2013-01-31 | 2013-07-10 | 中联重科股份有限公司渭南分公司 | Hydraulic system and engineering machinery with same |
| CN204265295U (en) * | 2014-12-02 | 2015-04-15 | 河南省矿山起重机有限公司 | A kind of lifting landing leg and use the transfer crane of this supporting leg |
| CN204474257U (en) * | 2015-02-13 | 2015-07-15 | 宁波如意股份有限公司 | The hydraulic control device of hydraulic support leg |
| CN205272304U (en) * | 2015-11-19 | 2016-06-01 | 长沙拓湃工程机械设备有限公司 | Supplementary lift landing leg and have engineering machine tool of this supplementary lift landing leg |
-
2015
- 2015-11-19 CN CN201510802442.2A patent/CN105291264A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2341035A1 (en) * | 1973-08-14 | 1975-02-27 | Bernhard Hauschopp | Revolving mortar-mixer and pump - consists of trough with lifting column on one side and slide valve into pump compartment on another side |
| GB2117260A (en) * | 1982-03-15 | 1983-10-12 | Sei Inc | Concrete mixing device |
| CN102923584A (en) * | 2011-08-08 | 2013-02-13 | 长沙桑尼重工机械有限公司 | Intelligent lorry crane with intelligent operation control system |
| CN203051269U (en) * | 2013-01-31 | 2013-07-10 | 中联重科股份有限公司渭南分公司 | Hydraulic system and engineering machinery with same |
| CN204265295U (en) * | 2014-12-02 | 2015-04-15 | 河南省矿山起重机有限公司 | A kind of lifting landing leg and use the transfer crane of this supporting leg |
| CN204474257U (en) * | 2015-02-13 | 2015-07-15 | 宁波如意股份有限公司 | The hydraulic control device of hydraulic support leg |
| CN205272304U (en) * | 2015-11-19 | 2016-06-01 | 长沙拓湃工程机械设备有限公司 | Supplementary lift landing leg and have engineering machine tool of this supplementary lift landing leg |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108221596A (en) * | 2016-12-15 | 2018-06-29 | 维特根有限公司 | For carrying out the building machinery of operation to paving concrete pavement |
| US10577036B2 (en) | 2016-12-15 | 2020-03-03 | Wirtgen Gmbh | Construction machine for working a ground pavement |
| CN110371217A (en) * | 2019-07-26 | 2019-10-25 | 广东博智林机器人有限公司 | Chassis assembly and its control method, carrier, construction robot |
| CN112959514A (en) * | 2021-03-26 | 2021-06-15 | 中铁科工集团轨道交通装备有限公司 | Movable mixing station with hydraulic jacking system |
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Application publication date: 20160203 |
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