CN2839233Y

CN2839233Y - Horizontal low level jack

Info

Publication number: CN2839233Y
Application number: CN 200520116128
Authority: CN
Inventors: 曹明富
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-10-20
Filing date: 2005-10-20
Publication date: 2006-11-22
Anticipated expiration: 2015-10-20

Abstract

Matching used jack when the utility model relates to a kind of vehicle maintenance and repair.The purpose of this utility model provides a kind of improvement of horizontal low level jack, and this jack should be able to overcome the deficiency of above-mentioned background technology, have rational in infrastructure, convenient to use, working strength is less, the characteristics of applied range.The technical scheme that the utility model proposes is: horizontal low level jack, comprise wallboard, be positioned at oil cylinder on the wallboard, with oil cylinder piston bar bonded assembly carriage mechanism, be used for oil transportation with the oil pump that orders about the oil cylinder motion, order about oil pump piston bar movable handle by leverage, described handle bottom is hinged on the wallboard, and the rotational angle of described handle is the 60-90 degree.The preferred rotational angle of described handle is 83 degree.Pallet height in the described carriage mechanism is 7 centimetres.

Description

Horizontal low level jack

Technical field

The utility model relates to a kind of hoisting device, specifically is matching used jack when vehicle maintenance and repair.

Background technology

Vehicle maintenance and repair need be raised vehicle when particularly keep in repair the automobile bottom and vacate the required space of service work, and hoisting device commonly used is horizontal jack.The existing horizontal jack of specializing in car maintenance use substantially all adopts hydraulic power transmission.After being that the tram is placed on jin top,, drive the oil pump piston crank motion, hydraulic oil is constantly pumped in the lifting cylinder, automobile is risen lift to required height thus by artificial turning handle repeatedly.But there is obvious defects in existing horizontal jack design.The one, the rotational angle of handle is all in 55 degree scopes, because rotational angle is less relatively, the reciprocating stroke of oil pump piston is just short, the amount of the hydraulic oil that each oil pump piston crank motion institute force feed goes out is just few, therefore automobile is risen and lift to certain altitude and often need repeatedly turning handle many times, consuming time more.The 2nd, the angle design that handle rotates is unreasonable; The 55 degree scopes that existing jack is rotated are vertical with ground level from handle, and until become 35 degree with ground level till, this angular range manual operations does not exactly make most the position of power, thereby relative working strength is bigger when operating; And when handle became 35 to spend with ground level, manual operations can transfer to toward pressing down handle, and in the time of can using strength, handle has gone to terminal point, had needed toward swivel motion.In addition, existing jack overhead distance generally all has more than ten centimetre, and this can't use when the car maintenance of some low chassiss.

Summary of the invention

The purpose of this utility model provides a kind of improvement of horizontal low level jack, and this jack should be able to overcome the deficiency of above-mentioned background technology, have rational in infrastructure, convenient to use, working strength is less, the characteristics of applied range.

The technical scheme that the utility model proposes is:

Horizontal low level jack, comprise wallboard, be positioned at oil cylinder on the wallboard, with oil cylinder piston bar bonded assembly carriage mechanism, be used for oil transportation with the oil pump that orders about the oil cylinder motion, order about oil pump piston bar movable handle by leverage, described handle bottom is hinged on the wallboard, and the rotational angle of described handle is the 60-90 degree.

The rotational angle of described handle is 83 degree.

Pallet height in the described carriage mechanism is 7 centimetres.

Because the hinge-point position of handle bottom and the cylinder body length of oil cylinder are transformed, make the rotational angle of handle from about 55 original degree, be increased to 80 to 90 degree, thereby the oil mass that crank motion drove of each oil pump increases more than 40%, this just makes this very heavy jack-up lift same height, the reciprocal number of revolutions of handle greatly reduces, the corresponding minimizing of required time; And, the pivot center of handle from ground level vertical begin to forward to always with ground level substantially parallel till, manual operations can be had an effect fully, thus the operation become comparatively light.In addition, because the pallet height in the described carriage mechanism is reduced to 7 centimetres, this just makes the utility model can be applied to the maintenance of the vehicle of all kinds of low chassiss, especially racing car, and field of application is able to remarkable expansion, and the weight of jack also has minimizing to a certain degree.

Description of drawings

Fig. 1 is a main TV structure scheme drawing of the present utility model.

Fig. 2 is a plan structure scheme drawing of the present utility model.

Fig. 3 is the structure for amplifying scheme drawing of one of oil pump control position among Fig. 1.

Fig. 4 is two a structure for amplifying scheme drawing of the oil pump control position among Fig. 1.

The specific embodiment

As shown in the figure, this horizontal low level jack has the base that is made of wallboard 2, and the base front end is equipped with front-wheel 1, oil cylinder 5 is housed on the base and is used for oil transportation to order about the oil pump 21 of oil cylinder motion; Also be equipped with by leverage and order about oil pump piston bar movable handle 8, the handle bottom is hinged on the wallboard by bearing pin (hinge-point 6); The piston rod 21-3 top of oil pump 21 also by bearing pin hinged (hinge-point 22) at the handle side, the point of application that constitutes pump oil is (obvious, hinge-point 6 is the power arm of leverage with the point of application of operating personal on handle, and hinge-point 6 to hinge-point 22 is the resistance arm of leverage); The oil cylinder piston bar by bearing pin 4 hinged by rise an arm 3 (being hinged on the wallboard), connecting rod 12 (being hinged on the wallboard), carriage 13 by bearing pin 9 by bearing pin 10 (by bearing pin 16,14 respectively with play an arm and a rod hinge connection) carriage mechanism (four-bar linkage) formed, pallet 15 is housed on the carriage.Pin handle 7 also is housed in addition, but the just lifting pallet of moving this pin handle that when zero load, tramps with one's feet.These all are the conventional design of existing jack, can directly take.

One of change target of the present utility model is: the rotational angle of handle enlarges., at first move on hinge-point 6 positions with the handle bottom, again with the pump housing 21-1 of oil pump lengthening, and the piston rod 21-3 of oil pump also gives corresponding lengthening for this reason, and concrete change numerical value is different and different according to the specification of jack.For example, for the jack of 2 to 3 tons of specified liftings, move about 1 centimetre on hinge-point 6 positions of handle bottom to get final product and (highly transform 10.5 centimetres into from 9.5 centimetres; The pump housing 21-1 lengthening of oil pump gets final product (length transforms 6.8 centimetres into from 5.5 centimetres) for 1.3 centimetres, and the piston rod 21-3 of oil pump also gives 1.3 centimetres of corresponding lengthenings.After the change, the rotational angle of handle can be extended to 60-90 degree (preferred 83 degree), and two end positions up and down that handle rotates are respectively by Fig. 3, shown in Figure 4.The axis of handle 8 is basic vertical with ground level among Fig. 3, and the piston 21-2 of oil pump has carried the top to the pump housing at this moment; The axis of handle 8 and ground level be near parallel among Fig. 4, and this moment, the piston 21-2 of oil pump reduced (axis of handle 8 also can go to parallelly with ground level among the figure, and just the rubber coating 25 of pump housing upper end can be squeezed) bottom near the pump housing.

Two of change target of the present utility model is: reduce the jack height.For this reason, the wallboard in the utility model, the member of carriage mechanism have all been made to lower height, have been strengthened the material thickness processing, still can keep original strength and stiffness after handling with assurance.After treatment, the end face of the pallet 15 on the carriage generally all less than 7 centimetres (the lifting height of the jack that specified lifting is 2 to 3 tons is at 7 to 50 centimetres), can guarantee to be applied to the automotive servicing of all low chassiss apart from floor level.

Claims

1, horizontal low level jack, comprise wallboard (2), be positioned at oil cylinder (5) on the wallboard, with oil cylinder piston bar bonded assembly carriage mechanism, be used for oil transportation with the oil pump (21) that orders about the oil cylinder motion, order about oil pump piston bar movable handle (8) by leverage, described handle bottom is hinged on the wallboard, and the rotational angle that it is characterized in that described handle is the 60-90 degree.

2, horizontal low level jack according to claim 1, the rotational angle that it is characterized in that described handle are 83 degree.

3, horizontal low level jack according to claim 1 and 2 is characterized in that the pallet (15) in the described carriage mechanism highly is 7 centimetres.