CN201538657U - Mechanical locking device for engineering machine supporting leg - Google Patents
Mechanical locking device for engineering machine supporting leg Download PDFInfo
- Publication number
- CN201538657U CN201538657U CN2009202388482U CN200920238848U CN201538657U CN 201538657 U CN201538657 U CN 201538657U CN 2009202388482 U CN2009202388482 U CN 2009202388482U CN 200920238848 U CN200920238848 U CN 200920238848U CN 201538657 U CN201538657 U CN 201538657U
- Authority
- CN
- China
- Prior art keywords
- lock
- dead bolt
- supporting leg
- pin
- lock dog
- 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.)
- Expired - Fee Related
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- Operation Control Of Excavators (AREA)
Abstract
The utility model relates to a mechanical locking device for engineering machine supporting leg, which belongs to an auxiliary device for engineering machine which comprises a lock block, a lock bolt and a lock pin. The lock bolt is U-shaped. One end face is wedge-shaped. One side edge of the U-shaped lock bolt is connected with a lock housing through a lock bolt pin. The lock pin is equipped to a movable supporting leg of the engineering machine. The lock block is of a swing rod shape. The lock block is provided with a locking surface corresponding with the wedge-shaped face of the lock bolt. One end of the lock block is connected with the lock housing through a lock block pin. An extension spring is provided between a free end of the lock block and the lock bolt. The free end of the extension spring corresponding with the lock block is provided with a pushing oil cylinder. The operation is simple and the safety is reliable.
Description
Technical field
The utility model relates to a kind of construction machinery and equipment supporting leg mechanical lock locking apparatus, belongs to the construction machinery and equipment auxiliary device.
Background technology
At present, the mechanical lock locking apparatus is housed all on the hydraulic ram of construction machinery and equipments such as car hosit, concrete pump truck, to prevent construction machinery and equipment when the motoring condition, supporting leg stretches out, and causes the accident.The problem that existing Locking Device exists mainly contains two: waste time and energy (1), should not operate.Because of each revenue and expenditure leg, put the mechanical lock locking apparatus that supporting leg all need be operated each supporting leg.(2) there is potential safety hazard.Because manual operation unavoidably misoperation can occur, during the supporting leg retractable, easily forgets the locking and the unlatching of Locking Device, causes serious accident.
The utility model content
The purpose of this utility model is to provide a kind of construction machinery and equipment supporting leg mechanical lock locking apparatus, and is simple to operate, safe and reliable.
Construction machinery and equipment supporting leg mechanical lock locking apparatus described in the utility model, comprise lock dog, dead bolt and lock pin, dead bolt is the U-shaped dead bolt, one end face is lozenges, lock pin is installed on the movable supporting legs of construction machinery and equipment, the medial launder of the corresponding U-shaped dead bolt of lock pin is located on the lock housing and an end is connected on the oil cylinder, lock dog is the fork shape, lock dog is provided with and the corresponding locking face of dead bolt lozenges, one end of lock dog is connected on the lock housing by the lock dog bearing pin, be provided with extension spring between the free end of lock dog and dead bolt, the free end of corresponding lock dog is provided with the promotion oil cylinder.
During use, lock body is installed on sub frame or the vehicle frame, will promote oil cylinder and this supporting leg rodless cavity flexible or oscillating oil cylinder by sebific duct and couple together, and lock pin is installed on the movable supporting legs that needs locking.
The utility model can make action finish automatically by oil cylinder and extension spring, and convenient realization interlock, and is simple to operate, avoids artificial direct control, safe and reliable.
Description of drawings
Fig. 1, the utility model embodiment are in the structural representation under the lockup state.
Fig. 2, the utility model embodiment are in locking and open structural representation constantly.
Fig. 3, the utility model embodiment are in movable supporting legs and stretch out or show structural representation behind the state.
Among the figure: 1, promote oil cylinder 2, extension spring 3, free end 4, lock dog 5, lock housing 6, fixed end 7, lock dog bearing pin 8, dead bolt 9, lock pin 10, dead bolt bearing pin 11, lozenges.
The specific embodiment
The utility model is described in further detail in conjunction with the foregoing description accompanying drawing.
As shown in the figure, construction machinery and equipment supporting leg mechanical lock locking apparatus described in the utility model, comprise lock dog 4, dead bolt 8 and lock pin 9, dead bolt 8 is the U-shaped dead bolt, one end face is lozenges 11, one side of U-shaped dead bolt is connected on the lock housing 5 by dead bolt bearing pin 10, lock pin 9 is installed on the movable supporting legs of construction machinery and equipment, lock dog 4 is the fork shape, lock dog 4 is provided with the lozenges 11 corresponding locking faces with dead bolt, the lower end of lock dog 4 is connected on the lock housing 5 by lock dog bearing pin 7 in the diagram, and free end of lock dog 4 (the lock dog upper end in the diagram) and 8 of dead bolts are provided with extension spring 2, and the free end of corresponding lock dog 4 is provided with and promotes oil cylinder 1.
Principle of work:
Stretch out when action when carrying out supporting leg, lock pin 9 is by the lozenges 11 mechanical lockings of dead bolt 8, supporting leg is failure to actuate, supporting leg telescopic oil cylinder rodless cavity internal pressure oil pressure rises thereupon, the pressure that promotes simultaneously in the oil cylinder 1 also increases, when pressure rises to when making the thrust that promotes oil cylinder 1 be enough to overcome the pulling force of extension spring 2, promoting the oil cylinder piston bar stretches out, lock dog 4 outwards rotates around the lock dog bearing pin, till dead bolt 8 can freely rotate the releasing locking, at this moment, lock pin 9 stretches out together with supporting leg, and dead bolt 8 is because the effect of extension spring 2 is in not lockup state simultaneously.
When carrying out supporting leg withdrawal action, promote oil cylinder 1 and withdraw under the effect of extension spring 2, lock pin 9 is withdrawn together with supporting leg, when lock pin 9 is run into dead bolt 8, promote dead bolt 8 and overcome extension spring 2 pulling force and extension spring 2 resistance by lozenges 11 backing block effects and rotate, up to entering lockup state.
Claims (1)
1. construction machinery and equipment supporting leg mechanical lock locking apparatus, it is characterized in that comprising lock dog, dead bolt and lock pin, dead bolt is the U-shaped dead bolt, one end face is lozenges, one side of U-shaped dead bolt is connected on the lock housing by the dead bolt bearing pin, lock pin is installed on the movable supporting legs of construction machinery and equipment, lock dog is the fork shape, lock dog is provided with and the corresponding locking face of dead bolt lozenges, one end of lock dog is connected on the lock housing by the lock dog bearing pin, be provided with extension spring between the free end of lock dog and dead bolt, the free end of corresponding lock dog is provided with the promotion oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202388482U CN201538657U (en) | 2009-09-29 | 2009-09-29 | Mechanical locking device for engineering machine supporting leg |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202388482U CN201538657U (en) | 2009-09-29 | 2009-09-29 | Mechanical locking device for engineering machine supporting leg |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201538657U true CN201538657U (en) | 2010-08-04 |
Family
ID=42590110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202388482U Expired - Fee Related CN201538657U (en) | 2009-09-29 | 2009-09-29 | Mechanical locking device for engineering machine supporting leg |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201538657U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106133259A (en) * | 2014-01-13 | 2016-11-16 | 普茨迈斯特工程有限公司 | Truck mounted concrete pump and the protection circuit for described truck mounted concrete pump |
| CN113401094A (en) * | 2021-07-29 | 2021-09-17 | 湖南三一中型起重机械有限公司 | Landing leg locking device, landing leg assembly and engineering machinery |
| CN114684078A (en) * | 2020-12-28 | 2022-07-01 | 河北雷萨重型工程机械有限责任公司 | Telescopic support leg and vehicle |
-
2009
- 2009-09-29 CN CN2009202388482U patent/CN201538657U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106133259A (en) * | 2014-01-13 | 2016-11-16 | 普茨迈斯特工程有限公司 | Truck mounted concrete pump and the protection circuit for described truck mounted concrete pump |
| CN106133259B (en) * | 2014-01-13 | 2019-05-07 | 普茨迈斯特工程有限公司 | Truck mounted concrete pump and protection circuit for the truck mounted concrete pump |
| CN114684078A (en) * | 2020-12-28 | 2022-07-01 | 河北雷萨重型工程机械有限责任公司 | Telescopic support leg and vehicle |
| CN114684078B (en) * | 2020-12-28 | 2023-12-15 | 河北雷萨重型工程机械有限责任公司 | Telescopic supporting leg and vehicle |
| CN113401094A (en) * | 2021-07-29 | 2021-09-17 | 湖南三一中型起重机械有限公司 | Landing leg locking device, landing leg assembly and engineering machinery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100804 Termination date: 20130929 |