CN2148070Y

CN2148070Y - Fast lifting jack for car

Info

Publication number: CN2148070Y
Application number: CN 93202399
Authority: CN
Inventors: 马同乐
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-01-28
Filing date: 1993-01-28
Publication date: 1993-12-01
Anticipated expiration: 2003-01-28

Abstract

The utility model relates to a fast lifting jack for car, comprising a rhombic bridge which is composed of four movable connecting rods, a screw shaft, and a rocking handle seat, wherein, a plurality of straight grooves or annular grooves are arranged on the shaft of the screw shaft, and a fast lifting mechanism which is composed of a connecting piece, a rotation body, a plane ball bearing, a cam ring, a clamping plate, and an end cover. The fast lifting mechanism can slide from left to right on the shaft, drive the bridge to lift and fall, and fast approach to the position which needs to be lifted. When the fast lifting mechanism is positioned on the shaft, the rotary screw shaft can lift or drop the car. The utility model has the advantages of simple structure, fast and simple lifting and falling or shrinking of the bridge, and labor saving when lifting.

Description

Fast lifting jack for car

The utility model relates to the lifting implement of vehicle maintenance, maintenance usefulness, exactly, but is a kind of roadlice jack of fast lifting.

The jack of vehicle maintenance, maintenance usefulness has fluid pressure type and spiral two kinds.The spiral jack that roadlice is used has a kind of four connecting rod portal structures as shown in Figure 6, and four connecting rods flexibly connect with minor axis each other.When the lifting roadlice, crane span structure assumes diamond in shape, and it is shaped as the screw rod of a horizontal direction and the nut that matches, rocking handle seat or baffle plate pin are fixed and the support weight.Screw rod such as same diagonal line are connecting two drift angles of rhombus, just screw rod passes two relative minor axises, wherein minor axis has the internal thread through hole (being equivalent to nut) of radial direction, outside thread on threaded matches, the through hole that radial direction is also arranged on the another minor axis, under the strained condition, this minor axis is pressed on the rocking handle seat of screw rod end, or on the plate washer before the rocking handle seat.When four connecting rod crane span structures all draw in, be zero with two drift angles of screw rod bonded assembly, other vertical angles are the straight angle.This jack volume is little, simple in structure, is easy to carry, but the variation of its crane span structure shape (lifting just), even small variation also wants rotary screw to realize.Because the liftoff height in lifting position is not quite similar during each the use,, especially in case of emergency feel inconvenience deeply so before the jack end contacted the lifting position, ceaselessly rotary screw is regulated, and was more time-consuming.In addition, between screw rod and the through hole, minor axis is cliding friction with the face that is in contact with one another between the baffle plate, so also effort relatively.

The purpose of this utility model is to make the crane span structure of this jack realize fast lifting and gathering, just worked as crane span structure before weight is touched at the end, the change of its shape or gathering only need just can realize by left and right slip lifting mechanism on screw shaft, rotary screw axle just when lifting only, and laborsaving.

The utility model is achieved in that screw rod is processed into screw shaft, just pass a side threading that has the internal thread through hole minor axis on the crane span structure, and opposite side is processed into axle, and distribute on it some straight troughs or circular groove mate fast lifting mechanism simultaneously.Described fast lifting mechanism is made of attaching parts, revolution, plane ball bearing of main shaft, cam ring, clamp and end cap.

Attaching parts is fixed on the minor axis that has through hole in the rhombus portal structure, and its effect is that whole lifting mechanism is coupled together with crane span structure.

Revolution is positioned on the attaching parts.Annular groove is arranged on the attaching parts, and revolution is positioned on the attaching parts by the stop screw in the embedding groove and can rotates around attaching parts.Circle round part with being embedded with the plane ball bearing of main shaft between the attaching parts.

Between revolution and end cap, cam ring is installed, is had at least a clamp in the cam ring,, just drive clamp generation radial displacement, make clamp or embedding or withdraw from straight trough or circular groove on the axle when cam ring is left and right when rotating to an angle.

When clamp withdrawed from straight trough on the axle or circular groove, whole fast lifting mechanism just can horizontally slip on screw shaft, drove crane span structure simultaneously and raise rapidly or descend, and perhaps all drew in; When clamp embeds straight trough on the axle or circular groove, rotary screw axle, the just shape of fine-tuning crane span structure, lifting just or fall roadlice.

The utility model is simple in structure, and is flexible, uses freely, but because it needs the underframe of the roadlice of lifting by the slip quick approach of lifting mechanism, also can draw in moment simultaneously.On the contact surface of cliding friction, used the plane ball bearing of main shaft in addition, so also more laborsaving during lifting.

Description of drawings:

Fig. 1 is the utility model structural representation sketch, and B is a fast lifting mechanism;

Fig. 2 is the structural representation of fast lifting mechanism;

Fig. 3 is the cutaway view at A--A place among Fig. 2;

Fig. 4 is the part figure in addition of the axle in the screw shaft;

Fig. 5 is clamp part figure in addition;

Fig. 6 is the lifting screw structural representation that existing roadlice uses.

Number in the figure:

1, attaching parts, 2, stop screw, 3, the plane ball bearing of main shaft, 4, cam ring, 5, clamp, 6, end cap, 7, axle, 8, revolution, 9, screw, 10, pin, 11, the rocking handle seat, 12, connect the minor axis of crane span structure, in through hole is arranged; 13, annular groove.

Embodiment of the present utility model in conjunction with the accompanying drawings is described below:

Some straight troughs of processing on the axle of screw shaft, axle head is connected with rocking handle seat 11.

Affixed attaching parts 1 has annular groove 13 on the attaching parts 1 on the minor axis 12 that screw shaft passes, and revolution 8 is positioned on the attaching parts 1 mounting plane ball bearing of main shaft 3 between revolution 8 and attaching parts 1 by the stop screw 2 that embeds in the groove 13.

Process round ring boss on the end face of revolution 8, it is outer through processing radial slot with the interior of cam ring 4 through matching on raised head face, puts two clamps 5 in the groove.

With screw 9 and pin 10 end cap 6 is fixed on the boss of revolution.

Use embodiment is as follows:

Clickwise cam ring 4, force clamp 5 to withdraw from the straight trough of axle on 7, the lifting mechanism that slides left fast, crane span structure then raise rapidly, when crane span structure contact roadlice underframe, left-hand revolution cam ring 4 forces in a certain straight trough on the clamp 5 embedding axles 7, and this moment, lifting mechanism was fixed, and threaded axle forms whole, but clickwise rocking handle seat 11 at this moment, crane span structure continues to raise the jack-up roadlice under the effect of screw rod and other end nut.After maintenance finished, left-hand revolution rocking handle seat 11, crane span structure descended, and fall roadlice, and when crane span structure left the roadlice base, the clickwise cam ring 4 again, forced clamp 5 to withdraw from straight trough on the axle 7, and the lifting mechanism that slides to the right fast draws in until crane span structure.

Claims

But 1, a kind of roadlice jack of fast lifting, constituted by four connecting rod crane span structures, screw shaft, rocking handle seat, it is characterized in that: have some straight troughs or circular groove and coupling that fast lifting mechanism is arranged on the axle of screw shaft (7), described fast lifting mechanism is made up of attaching parts (1), revolution (8), plane ball bearing of main shaft (3), cam ring (4), clamp (5) and end cap (6)

(1), attaching parts (1) is fixed on the minor axis (12), and annular groove (13) is arranged on it;

(2), revolution (8) is positioned on the attaching parts (1) by stop screw (2), embedded plane ball bearing of main shaft (3),

(3), between the end face of revolution (8) and end cap (6), cam ring (4) is installed, has a clamp (5) in the cam ring (4) at least.
But 2, the roadlice jack of a kind of fast lifting according to claim 1 is characterized in that: on the axle (7) some straight troughs are arranged.
But 3, the roadlice jack of a kind of fast lifting according to claim 1 and 2 is characterized in that: two clamps are arranged in the revolution (8).