CN201071004Y

CN201071004Y - Pawl arm swing type lift mechanism of wrecker

Info

Publication number: CN201071004Y
Application number: CNU2007200525274U
Authority: CN
Inventors: 李忠生; 李建光; 陈湛诚; 汤辛华
Original assignee: GUANGDONG YUEHAI MOTOR VEHICLE CO Ltd
Current assignee: GUANGDONG YUEHAI MOTOR VEHICLE CO Ltd
Priority date: 2007-06-08
Filing date: 2007-06-08
Publication date: 2008-06-11
Anticipated expiration: 2017-06-08

Abstract

The utility model belongs to a lifting mechanism for road-block wreckers for removing accident and illegal cars in the fields of public security, traffic management and traffic accident handling. The lifting mechanism comprises a lifting arm holder, a lifting outer arm, a lifting inner arm, a lifting oil cylinder, a draw hook, a link rod, a drag hook pin, a bracket arm and an oblique oil cylinder. The lifting outer arm and the oblique oil cylinder are respectively articulated with the lifting arm holder. The other side of the oblique oil cylinder is articulated with the lifting outer arm. The connection between the lifting outer arm and the lifting inner arm are dependent on the pivoted joint of the lifting oil cylinder. The draw hook is fixed on the lifting outer arm in pawl mode. The draw hook pin is fixed on the lifting inner arm. The swing/rotation center of the bracket arm is articulated with the bottom of the lifting inner arm, and the rear of the bracket arm is articulated with the bottom of the lifting oil cylinder via the link rod. The utility model omits the folding oil cylinder and the auxiliary devices thereof, can meet the requirements for different road conditions, has large altitude range for front suspension, ensures the safe, rapid and efficient traction of various cars, and can be folded rapidly and completely under zero-load conditions.

Description

The pawl swinging arm formula of wrecker is lifted mechanism

Technical field:

The utility model belong to a kind of be used for public security, transport administration, road accident handle unit cleaning accidents in time such as rescue, fault, vehicles peccancy road obstacle clearing vehicle lift mechanism.

Background technology:

Lifting mechanism is one of main component part of road obstacle clearing vehicle, and its job specification is exactly that the vehicle of being removed obstacles can be hauled under the state of fail to start.In the existing at home wrecker, it lifts mechanism mostly can finish this function, but all there is following weak point in the existing mechanism of lifting: 1, the updip angle of trailing arm is less, work in the time of can not satisfying different road conditions, especially the liftoff lower vehicle of the front overhang of being lifted itself, in real work when vehicle jolt, when there is the gradient on the road surface, trailing arm is easy to bump with the front overhang position, thereby damages the vehicle hauled; 2, need to design separately separately a folding oil cylinder and reach the function of lifting, folding, and the stroke of folding oil cylinder requires long, it is slower to finish folder function speed, so work efficiency reduces.

Summary of the invention:

The utility model aims to provide and does not a kind ofly need folding oil cylinder just can realize the folding and inclination of trailing arm, satisfy in different road conditions work, can make the haul of the liftoff lower vehicle safety of the front overhang of being lifted itself, and can realize that when zero load the pawl swinging arm formula of the wrecker of fast folding function lifts mechanism.

The technical scheme that realizes above-mentioned purpose is: this mechanism comprises trailing arm mount pad, lifting outer arm, lifting inner arm, elevating ram, drag hook, connecting rod, drag hook pin, trailing arm part, dump ram.It is hinged with the trailing arm mount pad respectively to promote outer arm and dump ram, the dump ram other end is hinged with the lifting outer arm, the join dependency of lifting inner arm and lifting outer arm is hinged in elevating ram, drag hook is fixed in the ratchet pattern and promotes on the outer arm, the drag hook pin then is fixed in and promotes on the inner arm, trailing arm swing centre of gration is hinged with lifting inner arm lower end, and the rear portion is then hinged bottom by connecting rod and elevating ram.

The utility model has reduced folding oil cylinder and auxiliary device thereof in practicality, can satisfy the work of different road conditions, and it is bigger to adapt to the front overhang altitude range, and the various types of vehicles safety, the haul quickly and efficiently that have guaranteed can realize quick and complete foldingly when unloaded.

Description of drawings:

Fig. 1 is the utility model structural representation.

The specific embodiment:

See shown in Figure 1, present embodiment comprises trailing arm mount pad 1, promote outer arm 2, promote inner arm 8, elevating ram 3, drag hook 4, connecting rod 5, drag hook pin 6, trailing arm part 7, dump ram 9, it is hinged with trailing arm mount pad 1 respectively to promote outer arm 2 and dump ram 9, dump ram 9 other ends are hinged with lifting outer arm 2, the join dependency of lifting inner arm 8 and lifting outer arm 2 is hinged in elevating ram 3, drag hook 4 is fixed in the ratchet pattern and promotes on the outer arm 2,6 of drag hook pins are fixed in and promote on the inner arm 8, trailing arm 7 swing centre of grations are hinged with lifting inner arm 8 lower ends, and the rear portion is then hinged bottom by connecting rod 5 and elevating ram 3.The utility model is in practicality, and this mechanism can be reduced to a plane four bar hinge-ratchet-swing-bar mechanisms, feels relieved by the ratchet flexible and drag hook 4 of elevating ram 3 and finishes the folding and inclination amplitude of oscillation function of trailing arm 7.When being in, trailing arm 7 can not fold and during the extreme lower position initial condition, upwards withdrawal of elevating ram 3, to promote inner arm 8, drag hook pin 6 and trailing arm 7 promotes, when drag hook pin 6 embeds drag hook 4, elevating ram 3 stops upwards and does reversing sense and stretch out downwards, this moment, trailing arm 7 was to move in the effect of the downward thrust of elevating ram and by the conter clockwise in 5 one-tenth views of lower link in the center of circle with drag hook pin 6, reached trailing arm 7 folding purposes.Arbitrary station in folding can utilize stretching with contracting of dump ram 9 to regulate and definite trailing arm 7 and the updip of horizontal surface and the angle that has a down dip, and height all can reach about 15 °.

Claims

1. the pawl swinging arm formula of wrecker is lifted mechanism, this mechanism comprises trailing arm mount pad (1), promote outer arm (2), promote inner arm (8), elevating ram (3), drag hook (4), connecting rod (5), drag hook pin (6), trailing arm part (7), dump ram (9), it is characterized in that: it is hinged with trailing arm mount pad (1) respectively to promote outer arm (2) and dump ram (9), dump ram (9) other end is hinged with lifting outer arm (2), the join dependency of lifting inner arm (8) and lifting outer arm (2) is hinged in elevating ram (3), drag hook (4) is fixed in the ratchet pattern and promotes on the outer arm (2), drag hook pin (6) then is fixed in and promotes on the inner arm (8), trailing arm (7) swing centre of gration is hinged with lifting inner arm (8) lower end, and the rear portion is then hinged bottom by connecting rod (5) and elevating ram (3).