CN2469048Y

CN2469048Y - Flexible bucket-arm mechanism for loading vehicle machinery

Info

Publication number: CN2469048Y
Application number: CN 01218176
Authority: CN
Inventors: 余海洋
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-04-02
Filing date: 2001-04-02
Publication date: 2002-01-02
Anticipated expiration: 2011-04-02

Abstract

The utility model discloses a flexible boom structure for loader, comprising a bucket, an oil cylinder, a rocker arm and an active boom connected with the frame. An oil cylinder is connected between the active boom and the frame, a vice boom is connected between the active boom and the bucket, an oil cylinder is connected between the active boom and the rocker arm, a linkage rod is connected between the rocker arm and the bucket, the rocker arm is connected with the vice boom. The component wear of the loader is reduced and the service life is prolonged. The energy consumption is decreased, which is favorable to prolong the working life of the engine. Compared with prior art, the flexible boom structure is more flexible, which not only is applicable to the wheel loaders and the crawler loaders, but also can be used on construction machinery such as bulldozers and so on.

Description

The flexible actuator of loader

The utility model relates to a kind of actuator of loader.

Known actuator has straight actuator, single rocking arm " Z " shape connecting rod actuator." G " type loader as Xuzhou City, Jiangsu Province loader factory and the production of Liuzhou loader factory has adopted this class formation exactly.(the participate-reform document: the novel equipment of loader is counter asks design, and " engineering machinery ", 2000/7, engineering machinery periodical publisher publishes; " engineering machinery and maintenance ", 2000/8/9, engineering machinery is published with maintenance periodical publisher; " wheel loader structural principle and maintenance ", publishing house of China Mining University publishes) scraper bowl of this actuator is directly by master arm connection frame, the rocking arm oil cylinder also directly connects frame.Actuator without any help, is passive at work steel body to driving power in operation process, and it exists following defective:

1. when loader during at weights such as spading sandstone, ores, the power that need utilize motor to provide impacts material repeatedly, just can make scraper bowl insert stockpile fully.Repeated stock makes fuselage be subjected to powerful reaction force, and the structural strength of complete machine and the fatigue strength of structural member have been produced very big negative interaction;

2. this operating characteristic makes the engine long time be in high loaded process, and is very big to the working life influence of motor;

3. the fatigue strength to driving member in loader transmission system and the system has brought very big negative effect;

4. the tire of loader is wanted transferring power when operation, during the overweight material of spading, skidding often occurs, has had a strong impact on the working life of tire.

The purpose of this utility model is to provide a kind of loader flexible actuator, and this actuator can reduce the component wear of loader, prolongs the application life of loader.

The purpose of this utility model is achieved in that this mechanism comprises scraper bowl, oil cylinder, rocking arm, the master arm that links to each other with frame, be connected with secondary swing arm between master arm and the scraper bowl, be connected with oil cylinder between master arm and the frame, be connected with oil cylinder between secondary swing arm and the frame, be connected with oil cylinder between master arm and the rocking arm; be connected with connecting rod between rocking arm and the scraper bowl, rocking arm is connected with secondary swing arm.

Described master arm constitutes by being connected with the master arm crossbeam between two blocks of side plates, and rocking arm oil cylinder rear end is connected master arm crossbeam middle part, and secondary swing arm constitutes by being connected with secondary swing arm crossbeam between two blocks of side plates, and the rocking arm middle part is connected secondary swing arm crossbeam place.

Described each connection adopts the fulcrum post hinge type to connect.

Swing arm of the present utility model is made of two parts of major-minor, and has set up secondary boom cylinder, and the rocking arm oil cylinder does not link to each other with frame, but is connected with master arm.Not exclusively rely on motor in the spading operation process power is provided, but provide initial power, rely on each oil cylinder work then, promote scraper bowl and insert material by motor.

The utility model has improved complete machine and be subjected to force intensity and stressed frequency in operation process, can improve the reliability of complete machine structure greatly.The force-bearing situation of driving member has also obtained very big alleviation in transmission system and the transmission system, and the working life of driving member is had very big protective effect.Motor high loaded process has no longer for a long time reduced energy consumption, improves working condition widely, helps prolonging the working life of motor.The phenomenon of tyre slip when having avoided loader spading weight has effectively played very big protective effect to the working life of tire.Extended the function of use of loader, widened the scope of application, made the loading function realize digging, shovel, taking off and various aerial works.Unloading distance and discharge height have been improved greatly.Can adapt to the handling operation of various large-scale load-carrying vehicles.Compare with existing technology, flexible actuator is more flexible, and working range is bigger, is not only applicable to wheel loader, crawler-type loader, also can be used for engineering machinery such as bulldozer simultaneously.

Below in conjunction with drawings and Examples the utility model is elaborated.

Fig. 1 is the schematic diagram of an embodiment of the present utility model.

Fig. 2 is the concrete structure figure of Fig. 1.

Fig. 3 is the vertical view of Fig. 2.

Fig. 4 is the operation original state figure of Fig. 1.

Fig. 5 is the aerial state diagram of the operation of Fig. 2.

1. master arms among the figure, 2. secondary swing arm, 3. scraper bowl, 4. connecting rod, 5. rocking arm, 6. rocking arm oil cylinder, 7. secondary boom cylinder, 8. master arm oil cylinder, 9. frame.

In Fig. 1 and Fig. 2, master arm 1 rear end links to each other with frame 9, is connected with secondary swing arm 2 between master arm 1 front end and the scraper bowl 3.Be connected with master arm oil cylinder 8 between master arm 1 front portion and the frame 9, be connected with secondary boom cylinder 7 between secondary swing arm 2 rear portions and the frame 9.Be connected with rocking arm oil cylinder 6 between the rear portion of master arm 1 and the rear end of Rocker arm 5, be connected with connecting rod 4 between the front end of Rocker arm 5 and the scraper bowl 3, the middle part of Rocker arm 5 is connected with the middle part of secondary swing arm 2.Each connects employing fulcrum post hinge type and connects.

In Fig. 3, master arm 1 constitutes by being connected with the master arm crossbeam between two blocks of side plates, and the rear end of rocking arm oil cylinder 6 is connected master arm crossbeam middle part.Secondary swing arm 2 constitutes by being connected with secondary swing arm crossbeam between two blocks of side plates, and the middle part of Rocker arm 5 is connected secondary swing arm crossbeam place.

Working cycles: as shown in Figure 4, scraper bowl 3 at first is positioned at the secondary boom cylinder 7 of initial position (apart from vehicle frame 9 the most nearby) and protracts during operation, and master arm oil cylinder 8 shrinks simultaneously, makes the motion of scraper bowl 3 along continuous straight runs.After scraper bowl 3 inserted stockpile fully, rocking arm oil cylinder 6 protracted, and by the effect of Rocker arm 5, connecting rod 4, drove upwards upset of scraper bowl 3, finished spading.After finishing spading, master arm oil cylinder 8 elevate a turnable ladders, secondary boom cylinder 7 shrinks, and makes scraper bowl 3 to initial position close (avoiding long cause preceding heavy of the arm of force).Behind initial position, master arm 1 and secondary swing arm 2 be elevate a turnable ladder simultaneously.After treating that scraper bowl 3 rises to high limit position, as shown in Figure 5, rocking arm oil cylinder 6 shrinks, and drives scraper bowl 3 and overturns downwards by Rocker arm 5, connecting rod 4, finishes loading and unloading.

After finishing loading and unloading, rocking arm oil cylinder 6 protracts, and drives scraper bowl 3 revolutions, and master arm 1 and secondary swing arm 2 shrink simultaneously, make scraper bowl 3 get back to initial position, finish a working cycles, as shown in Figure 4.

Claims

1. the flexible actuator of a loader, this mechanism comprises scraper bowl, oil cylinder, rocking arm, the master arm that links to each other with frame, be connected with oil cylinder between master arm and the frame, it is characterized in that being connected with between master arm and the scraper bowl secondary swing arm, be connected with oil cylinder between secondary swing arm and the frame, be connected with oil cylinder between master arm and the rocking arm, be connected with connecting rod between rocking arm and the scraper bowl, rocking arm is connected with secondary swing arm.

2. the flexible actuator of loader according to claim 1, it is characterized in that described master arm constitutes by being connected with the master arm crossbeam between two blocks of side plates; rocking arm oil cylinder rear end is connected master arm crossbeam middle part; secondary swing arm constitutes by being connected with secondary swing arm crossbeam between two blocks of side plates, the rocking arm middle part is connected secondary swing arm crossbeam place.

3. the flexible actuator of loader according to claim 1 is characterized in that each connects employing fulcrum post hinge type and connects.