CN201133389Y

CN201133389Y - Pneumatic drive apparatus

Info

Publication number: CN201133389Y
Application number: CNU2007201588976U
Authority: CN
Inventors: 刘绍普
Original assignee: XINTAI YONGFENG MACHINERY RESEARCH INSTITUTE
Current assignee: XINTAI YONGFENG MACHINERY RESEARCH INSTITUTE
Priority date: 2007-12-15
Filing date: 2007-12-15
Publication date: 2008-10-15
Anticipated expiration: 2017-12-15

Abstract

The utility model discloses a pneumatic drive device, which comprises a cylinder, a piston, a tappet, a push rod, a ratchet wheel, a sleeve, a shift machine and an output shaft which are arranged in the cylinder; wherein, one end of the tappet is connected with the piston, and the other end is connected with the ratchet with the push rod; the sleeve is covered on the output shaft; the shift machine is cooperated with the ratchet wheel through holes on the sleeve; the front end of the shift machine is a wedge shape platform, and a spring is covered between the wedge shape platform and the internal wall of the sleeve; the push rod is fixedly connected with the spring cover; the cylinder is equipped with a gas joint. The pneumatic drive device not only has the advantages of simple structure and convenient carrying, but also can realize the positive and negative output of a power. The pneumatic drive device can be driven directly by a pressure air supply without a motor or a gas engine; the air circuit of an automobile can drive each kind of repair equipment; the drive device is especially suitable to being used as an auxiliary power unit for an vehivle repair equipment with good universality.

Description

A kind of pneumatic actuating device

Technical field

The utility model relates to a kind of pneumatic actuating device, specifically its to relate to a kind of be the drive unit of energy source with the pressed gas.

Background technique

In the prior art, the drive unit of providing power to adopt be for various machinery, the overwhelming majority is to be energy source with electric power, its defective is can't work under the situation of electric energy not having; Also some is that drive unit comes driving device equipment with engine fuel in addition, but it only limits to some special equipments, and versatility is relatively poor, and its engine speed is difficult to control.

Summary of the invention

Task of the present utility model is the defective at above-mentioned prior art, a kind of simple in structure, highly versatile is provided, is the drive unit of power resources with the pressed gas.

Its technical solution is as follows:

A kind of pneumatic actuating device, it comprises piston in cylinder and the cylinder, tappet, push rod, ratchet, swing set, moving tooth, and output shaft, above-mentioned tappet one end connects piston, the other end connects push rod, sheathed return spring on the tappet body of rod, above-mentioned ratchet is packed in an end of output shaft, above-mentioned swing set is sleeved on the output shaft, the hole that above-mentioned moving tooth passes on the swing set cooperates with ratchet, above-mentioned moving tooth front end is a wedge shape platform, be arranged with spring between this wedge shape platform and swing set inwall, push rod is connected on the swing set, and above-mentioned cylinder is furnished with the gas joint.Adopt the drive unit of this structure, the gas joint of its cylinder is connected high-pressure air source, pressed gas enters cylinder, piston in the cylinder will be taken tappet to a side shifting under the gas pressure effect, the swing set swing of taking push rod thus and being connected with it, swing set is taken ratchet, thereby promote ratchet and drive the output shaft rotation, cut off source of the gas and exhaust, then inner pressure of air cylinder diminishes, tappet is return under the effect of return spring just, take above-mentioned each mechanism's backswing thus, moving tooth can slip over tooth of ratchet in backswing like this, and cylinder is whenever finished breathing action one time like this, moving tooth just can promote the tooth that ratchet rotated and slipped over ratchet, move in circles like this, output shaft is turned round continuously, if will carry on the moving tooth and overturn 180 °, then it will drive the ratchet counter-rotating, thereby realize forward and reverse power output of this drive unit.

Above-mentioned piston portion can be replaced by leather cup, the leather cup periphery is connected with the cylinder inner wall hermetic seal, above-mentioned tappet one end connects leather cup, the other end connects push rod, adopt the drive unit of this structure, during cylinder intake, because the elasticity of leather cup itself, it can be heaved to a side under the effect of pressed gas, thereby the tappet that promotes to be attached thereto is taken push rod thus and is reached the swing set swing that is connected with it to a side shifting, and swing set is taken ratchet, thereby promote ratchet and drive the output shaft rotation, during the cylinder exhaust, a party is restored the beginning state next time in the effect of return spring and self elastic force, and drives each mechanism's backswing, so move in circles, just can drive output shaft and turn round continuously.

Above-mentioned drive unit is not only simple in structure, be convenient for carrying, and can realize forward and reverse output of power; It does not need motor or internal-combustion engine directly to drive, and only needs pressure gas source to get final product, insert automobile gas circuit just can be used to drive various repairing facility, be particularly suitable as vehicle-mounted auxiliary power unit of repairing facility and use, versatility is good.

Below in conjunction with accompanying drawing the utility model is done further explanation:

Description of drawings

Fig. 1 is the drive mechanism schematic representation of a kind of mode of execution of the utility model;

Fig. 2 is the structural representation of the another kind of mode of execution of the utility model.

Embodiment

The technology contents of below not addressing all can adopt or use for reference prior art.

Be illustrated in figure 1 as mode of execution one of the present utility model, this drive unit is by cylinder 1, the piston 2 that can in cylinder, slide, the tappet 3 that one end connection piston 2 the other ends and push rod 4 are hinged, push rod 4, ratchet 5, swing set 6, compositions such as moving tooth 7 and output shaft 8, sheathed return spring 31 on its body of rod, above-mentioned ratchet 5 connects an end that is packed in output shaft 8 by key, above-mentioned swing set 6 is sleeved on the output shaft 8, the hole that moving tooth 8 passes on the swing set withstands on the ratchet of ratchet 5, moving tooth 7 front ends are a wedge shape platform 71, be arranged with spring 72 between this wedge shape platform and swing set inwall, push rod 5 is fixed with one the transmission shaft of the above-mentioned transmission case of the other end transmission joint of above-mentioned output shaft 8 with swing set 7.

Above-mentioned pneumatic-typed drive unit can have following working procedure: with pedal switch cylinder and source of the gas are connected, when pushing down on the pedal switch, the air inlet open that communicates with source of the gas on the switch assembly, exhaust close, pressurized air in the air pump enters cylinder 1 by the suction port 11 of cylinder, inner pressure of air cylinder raises, thereby piston 2 and tappet 3 are to a side shifting, while compression retracteding position spring 31, swing set 6 swings that tappet 3 drives push rod 4 and is connected with it, swing set 6 drives moving tooth 7, thereby driving 5 rotations of moving tooth 7 promotion ratchets rotates output shaft 8 together, lift pedal switch, its inlet close that communicates with source of the gas then, Exhaust Open, the pressurized air that enters cylinder is discharged, tappet 3 is return under the effect of return spring 31, and drive swing set 6 backswing, because the moving tooth front end has wedge shape platform 71, so moving tooth 7 will slip over a tooth on the ratchet 5 and arrive next tooth when swing set 6 backswing, step on switch so repeatedly, above-mentioned working procedure circulation, output shaft 8 just can rotate continuously, if will allow the output shaft backward rotation, only need be pulled upwardly moving tooth 7 backs and rotate 180 ° of insertions again, moving tooth 7 will promote ratchet 5 in the other direction and drive the output shaft backward rotation when at this moment pushing down on the pedal switch.

As shown in Figure 2, as another mode of execution of the present utility model, its except that piston portion adopt rubber cup 2 ', remaining part all can adopt the technology of mode of execution one, this rubber cup 2 ' periphery and cylinder inner wall between for being sealedly and fixedly connected, it can be connected with tappet 3 by disk 10.

Claims

1, a kind of pneumatic actuating device, it is characterized in that: described drive unit comprises the piston (2) in cylinder (1) and the cylinder, tappet (3), push rod (4), ratchet (5), swing set (6), moving tooth (7) and output shaft (8), described tappet (3) one ends connect piston, the other end and push rod (4) are hinged, sheathed return spring (31) on the tappet body of rod, described push rod (4) is fixed with one with swing set (6), described ratchet (5) is packed in an end of output shaft (8), described swing set (6) is sleeved on the output shaft (8), the hole that above-mentioned moving tooth (7) passes on the swing set cooperates with ratchet (5), its front end is a wedge shape platform (71), is arranged with spring (72) between the wedge shape platform (71) of moving tooth (7) and the inwall of swing set (6).

2, drive unit according to claim 1 is characterized in that: described piston is replaced by rubber cup, and described leather cup periphery is connected with the cylinder inner wall hermetic seal, and described tappet one end connects leather cup, and the other end and push rod are hinged.

3, drive unit according to claim 2 is characterized in that: the end of described tappet (3) is furnished with disk (32) and is connected with leather cup.