CN102442617A - Two-stage extending landing leg mechanism - Google Patents
Two-stage extending landing leg mechanism Download PDFInfo
- Publication number
- CN102442617A CN102442617A CN201010508352XA CN201010508352A CN102442617A CN 102442617 A CN102442617 A CN 102442617A CN 201010508352X A CN201010508352X A CN 201010508352XA CN 201010508352 A CN201010508352 A CN 201010508352A CN 102442617 A CN102442617 A CN 102442617A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- oil
- loop
- stage
- oil cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses a two-stage extending landing leg mechanism, the inside of a two-stage landing leg mechanism is provided with two hydraulic cylinders which are respectively a first cylinder and a second cylinder, the piston rod of the first cylinder is fixed on the end part of a first movable landing mechanism, the piston rod of the second cylinder is fixed on the end part of a second movable landing mechanism, the two ends parts are respectively the remote ends of the two-stage landing leg mechanism, and the first cylinder is connected with the second cylinder in series; the rodless cavities of the two cylinders are jointed, and a one-way valve is arranged on an oil line; the rod cavities of the two cylinders are jointed, and a one-way valve is arranged on an oil line; and the oil lines controlled byof the two one-way valves form a loop, the loop of the rod cavity is provided with an oil line inlet and outlet, the loop of the rodless cavity is provided with another oil line inlet and outlet, and the oil line inlet and outlet of the loop of the rodless cavity passes through the piston rod of the first cylinder, and is connected into the rodless cavity. For the horizontal cylinder, the design that a plug-in one-way valve is used to control the oil line of two serial connected cylinders is adopted, the structure is simple, the installation is convenient, and the two-stage extension of the landing legs of a large-tonnage crane can be safely and effectively realized.
Description
Technical field
The present invention relates to a kind of construction machinery and equipment, a kind of specifically two-stage telescopic outrigger mechanism.
Background technology
For increasing the horizontal span of supporting leg, improving the supporting leg stress condition with load-carrying ability significantly in improving; The large-tonnage car hosit generally adopts the design of two-stage supporting leg at present; Its supporting leg stretch mode has multiple, as single cylinder add block type, twin-tub adds block type, single cylinder adds wire rope pulley formula etc.
Summary of the invention
The purpose of this invention is to provide the twin-tub supporting leg telescoping mechanism of a kind of brand new by check valve control.
Technical scheme provided by the invention is:
Two-stage telescopic outrigger mechanism at two hydraulic rams of the in-house installation of two-stage supporting leg, is respectively first oil cylinder and second oil cylinder; The piston rod of first oil cylinder is fixed therein the end of the first movable supporting legs mechanism, and the piston rod of second oil cylinder is fixed on the end of the second movable supporting legs mechanism, and described two ends are respectively the far-end that two-stage is propped up leg mechanism; First oil cylinder, second oil cylinder of connecting; The rodless cavity butt joint of two oil cylinders is also installed check valve on oil circuit, the rod chamber butt joint of two oil cylinders is also installed check valve on oil circuit, and the oil circuit of two check valve controls forms a loop; One oil circuit is installed on the rod chamber loop to be imported and exported; Another oil circuit is installed on the loop of rodless cavity is imported and exported, the oil circuit in rodless cavity loop is imported and exported and is passed the wherein piston rod of first oil cylinder, is connected in the rodless cavity; Mode by plug-in check valve control oil channel and then the flexible sequencing of control twin-tub realizes that the two-stage supporting leg is flexible.
This cross cylinder adopts the plug-in check valve to control the design of two cylinders series connection oil circuit, and is simple in structure, easy for installation, can realize safely and effectively that hoister in large tonnage supporting leg two-stage is flexible.
Description of drawings
According to accompanying drawing and embodiment the present invention is done further explain below.
Fig. 1 is two-stage telescopic outrigger mechanism structure figure;
Fig. 2 is the hydraulic pressure johning knot composition of two-stage telescopic outrigger mechanism;
The specific embodiment
Shown in Fig. 1-2, two-stage telescopic outrigger mechanism is at two hydraulic rams of the in-house installation of two-stage supporting leg; Be respectively first oil cylinder 1 and second oil cylinder 2; The piston rod of first oil cylinder 1 is fixed therein the end of the first movable supporting legs mechanism 4, and the piston rod of second oil cylinder 2 is fixed on the end of the second movable supporting legs mechanism 5, and described two ends are respectively the far-end that two-stage is propped up leg mechanism; First oil cylinder, 1 series connection, second oil cylinder 2; The rodless cavity of two oil cylinders docks and on oil circuit, installs the rod chamber butt joint of 3, two oil cylinders of check valve and loop of oil circuit formation of 3, two check valves of check valve, 3 controls is installed on oil circuit; One oil circuit is installed on the rod chamber loop is imported and exported B; Another oil circuit is installed on the loop of rodless cavity is imported and exported A, the oil circuit in rodless cavity loop is imported and exported and is passed the wherein piston rod of first oil cylinder 1, is connected in the rodless cavity; Mode by plug-in check valve control oil channel and then the flexible sequencing of control twin-tub realizes that the two-stage supporting leg is flexible.
Hydraulic oil gets into first oil cylinder, 1 rodless cavity by oil inlet A mouth, and this moment, first oil cylinder, 1 right-hand member plug-in check valve 3 was in closure state, and the oil circuit that hydraulic oil is gone to second oil cylinder, 2 rodless cavities is in closed condition; Under the hydraulic oil effect; First oil cylinder, 1 piston rod stretches out, and stretches out thereby promote the first movable supporting legs mechanism 5, thereby when first oil cylinder, 1 piston advances to the cylinder barrel right-hand member, can jack-up check valve 3 spools opened by check valve 3; The oil circuit of connecting this moment is open-minded; Hydraulic oil gets into second oil cylinder, 2 rodless cavities, promotes second oil cylinder, 2 piston rods and stretches out, thereby accomplish stretching out of the second movable supporting legs mechanism.
Hydraulic oil gets into second oil cylinder, 2 rod chambers by oil inlet B mouth, and this moment, second oil cylinder, 2 left end plug-in check valves 3 were in closure state, and hydraulic oil is gone to first oil cylinder, 1 rod chamber oil circuit and is in closed condition; Under the hydraulic oil effect; The withdrawal of second oil cylinder, 2 piston rods, thus make 5 withdrawals of the second movable supporting legs mechanism, thus, second oil cylinder, 2 pistons can jack-up check valve 3 spools be opened by check valve 3 when advancing to the cylinder barrel left end; The oil circuit of connecting this moment is open-minded; Hydraulic oil gets into first oil cylinder, 1 rod chamber, promotes first oil cylinder, 1 piston-retraction, thereby accomplishes the withdrawal of first oil cylinder mechanism 4 and whole supporting leg.
Claims (4)
1. two-stage telescopic outrigger mechanism; At two hydraulic rams of the in-house installation of two-stage supporting leg; Be respectively first oil cylinder and second oil cylinder, it is characterized in that, the piston rod of first oil cylinder is fixed therein the end of the first movable supporting legs mechanism; The piston rod of second oil cylinder is fixed on the end of the second movable supporting legs mechanism, and described two ends are respectively the far-end that two-stage is propped up leg mechanism.
2. two-stage telescopic outrigger according to claim 1 mechanism; It is characterized in that; First oil cylinder, second oil cylinder of connecting; The rodless cavity butt joint of two oil cylinders is also installed check valve on oil circuit, the rod chamber butt joint of two oil cylinders is also installed check valve on oil circuit, and the oil circuit of two check valve controls forms a loop.
3. two-stage telescopic outrigger structure according to claim 1 is characterized in that, an oil circuit is installed on the rod chamber loop is imported and exported.
4. two-stage telescopic outrigger structure according to claim 1 is characterized in that, another oil circuit is installed on the loop of rodless cavity is imported and exported, and the oil circuit in rodless cavity loop is imported and exported and passed the wherein piston rod of first oil cylinder, is connected in the rodless cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010508352XA CN102442617A (en) | 2010-10-15 | 2010-10-15 | Two-stage extending landing leg mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010508352XA CN102442617A (en) | 2010-10-15 | 2010-10-15 | Two-stage extending landing leg mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102442617A true CN102442617A (en) | 2012-05-09 |
Family
ID=46005621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010508352XA Pending CN102442617A (en) | 2010-10-15 | 2010-10-15 | Two-stage extending landing leg mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102442617A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102874696A (en) * | 2012-09-27 | 2013-01-16 | 徐州天地重型机械制造有限公司 | Two-stage synchronous extensible landing leg |
| CN104132027A (en) * | 2014-07-09 | 2014-11-05 | 盐城工业职业技术学院 | Novel hydraulic transmission device |
-
2010
- 2010-10-15 CN CN201010508352XA patent/CN102442617A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102874696A (en) * | 2012-09-27 | 2013-01-16 | 徐州天地重型机械制造有限公司 | Two-stage synchronous extensible landing leg |
| CN104132027A (en) * | 2014-07-09 | 2014-11-05 | 盐城工业职业技术学院 | Novel hydraulic transmission device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201214601Y (en) | Main arm telescopic mechanism for crane | |
| CN201851425U (en) | Two-stage telescopic oil cylinder, hydraulic control system and telescopic mechanism for suspension arm of crane | |
| CN205442462U (en) | Flexible arm structure and hoist based on synchronous telescope drive mechanism | |
| CN105417411A (en) | Telescopic boom structure based on multi-stage oil cylinder and crane | |
| CN103896155B (en) | Control the hydraulic control system of twin-tub sequential telescopic, suspension arm mechanism and hoisting crane | |
| CN102303813B (en) | Crane support leg, support leg hydraulic system and crane | |
| CN104444818A (en) | Hydraulic control system with two sequentially stretched and contracted cylinders, suspension arm mechanism and crane | |
| CN102285598B (en) | Multi-section arm telescopic device and crane with same | |
| CN102689846B (en) | Rope row type telescopic boom mechanism and crane provided with same | |
| CN102134044B (en) | Suspension arm sequential stretching/retracting hydraulic system | |
| CN201999660U (en) | Telescopic hydraulic mechanism of crane jib | |
| CN206970063U (en) | A kind of crane five-stage telescopic boom | |
| CN204625035U (en) | A kind of telescoping mechanism saving arm for hoisting crane four | |
| CN102442617A (en) | Two-stage extending landing leg mechanism | |
| CN202481966U (en) | Suspension arm of crane | |
| CN202671073U (en) | Rope row-type telescopic arm mechanism and crane with the same | |
| CN105384091A (en) | Telescopic boom structure with a multilevel independent telescopic cylinder and crane | |
| CN102086003B (en) | Double-cylinder cable arm expansion device of large-tonnage straight arm lorry-mounted crane | |
| CN201850092U (en) | Two-level telescopic leg mechanism | |
| CN203161713U (en) | Hydraulic cylinder for improving sealing performance of pistons | |
| CN202400760U (en) | Crane and telescopic arm device of same | |
| CN108840258B (en) | Combined telescopic arm system and engineering machinery | |
| CN102583174A (en) | Crane boom | |
| CN204384727U (en) | The hydraulic control system of twin-tub sequential telescopic, suspension arm mechanism and hoisting crane | |
| CN203715094U (en) | Hydraulic control system for controlling sequential expansion of double cylinders, suspension arm mechanism and crane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120509 |