CN201517531U

CN201517531U - Cylinder

Info

Publication number: CN201517531U
Application number: CN2009200361004U
Authority: CN
Inventors: 陈祝君; 杨波
Original assignee: ZHANGJIAGANG TIANJIANG PRECISION MOULD CO Ltd
Current assignee: ZHANGJIAGANG TIANJIANG PRECISION MOULD CO Ltd
Priority date: 2009-03-12
Filing date: 2009-03-12
Publication date: 2010-06-30
Anticipated expiration: 2019-03-12

Abstract

The utility model discloses a cylinder capable of using a multi-path air source when an air source pressure is not enough, comprising a cylinder body and a piston, wherein the cylinder body is a multi-layer structure of at least two layers, namely at least two piston cavities are arranged in the cylinder body and each piston cavity is provided with an air exchange loop and the piston comprises: a piston seat and a plurality of piston bodies corresponding with the piston cavities on the piston seat and the piston seat passes through the piston cavity to seal with the cylinder body and each piston body is actively arranged in the corresponding piston cavity and the corresponding piston cavity is divided into two mutually sealed semi-cavities. The piston cavities, the corresponding cavity bodies and the air exchange loops make the cylinder use the multi-path air source to make the thrust satisfy real need.

Description

A kind of cylinder

Technical field

The utility model relates to a kind of cylinder.

Background technique

Present cylinder, its structure generally includes: cylinder body and the piston that is arranged in the inner chamber of cylinder block, this piston is divided into preceding half chamber and later half chamber with inner chamber of cylinder block, cylinder body be provided with communicate with preceding half chamber be used to make the back gas port that the preceding gas port that contracts behind the piston rod and being used to of communicating with later half chamber protract piston rod.This cylinder than higher, will reach the pressure about 10 kilograms to the requirement of source of the gas usually, could guarantee the proper functioning of cylinder.But in actual use, a lot of on-the-spot sources of the gas can only reach the pressure about 5 kilograms, make that the thrust of cylinder can not practical requirement, thereby have influence on the normal operation of relevant device.

The model utility content

A technical problem to be solved in the utility model is: provide a kind of when bleed pressure is not enough, can use the cylinder of multichannel source of the gas.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of cylinder, comprise: cylinder body and piston, it is characterized in that: described cylinder body is two-layer at least multi-layer structure, that is: be provided with at least two piston cavity in the cylinder body, each piston cavity is provided with the ventilation loop, described piston comprises: piston seat and being arranged on the piston seat, with the corresponding a plurality of piston bodies of piston cavity, described piston seat passes through all piston cavity, and seal mutually with cylinder body, each piston body all is movably arranged in the corresponding piston chamber, and the corresponding piston chamber is divided into two half chambeies of sealing mutually.

Described cylinder body is a double layer construction, that is: be provided with former and later two piston cavity in the cylinder body, forward and backward piston cavity is provided with the ventilation loop, described piston comprises: piston seat and the forward and backward piston body that is arranged on the piston seat, the piston seat sealing is located in the roof in secondary piston chamber, forward and backward piston body is movably arranged on respectively in the forward and backward piston cavity, and the secondary piston body is divided into the secondary piston chamber in preceding first chamber and first chamber, back of mutual sealing, and the back piston body is divided into the back piston chamber in preceding second chamber and second chamber, back of mutual sealing.

The concrete set-up mode in the ventilation loop in described secondary piston chamber is: offer at least one preceding upward gas port that communicates with preceding first chamber and the preceding time gas port that at least one communicates with preceding second chamber on the described cylinder body; The concrete set-up mode in the ventilation loop in described back piston chamber is: offer the back gas circuit that goes up gas port and preceding first chamber of connection and second chamber, back that at least one communicates with first chamber, back on the cylinder body.

The beneficial effects of the utility model are: this cylinder by be provided with a plurality of piston cavity and with the corresponding a plurality of piston bodies of a plurality of piston cavity, and each piston cavity is provided with the ventilation loop, makes this cylinder to make its thrust reach the needs of reality by the mode of using the multichannel source of the gas; Thereby solved the problem of on-the-spot bleed pressure deficiency well.

Description of drawings

Fig. 1 is the structural representation of push mode before the piston in the utility model is in;

Fig. 2 is the structural representation that the piston in the utility model is in retracted state;

Among Fig. 1 to Fig. 2: 1, preceding cylindrical shell, 2, rear cylinder body, 3, top cover, 4, bottom, 5, dividing plate, 6, jump ring, 7, the secondary piston body, 71, the front limit projection, 8, back piston body, 81, the back spacing block set, 9, the secondary piston seat, 10, the back piston seat, 11, preceding first chamber, 12, preceding second chamber, 13, first chamber, back, 14, second chamber, back, 15, the preceding gas port of going up, 16, preceding gas port down, 17, gas port on the back, 18, gas circuit, 19, pilot hole, 20, needle.

Embodiment

Below in conjunction with accompanying drawing, describe specific embodiments of the present utility model in detail.

As shown in Figure 1, cylinder described in the utility model, comprise: piston and by preceding cylindrical shell 1, rear cylinder body 2, before being arranged on the top cover 3 at cylindrical shell 1 top and be arranged on the bottom 4 of rear cylinder body 2 bottoms and be arranged on before, the double-deck cylinder body that dividing plate 5 between the

rear cylinder body

1 and 2 constitutes---be provided with in the cylinder body former and later two piston cavity promptly before, the back piston chamber, described piston comprises: piston seat and be arranged on the piston seat before, back piston body 7 and 8, before, be respectively arranged with on the back piston body 7 and 8 control its stroke before, back spacing block set 71 and 81, in the present embodiment, described piston seat comprises: the secondary piston seat 9 and the back piston seat 10 that nest together by jump ring 6, offering the pilot hole 19 that is used to install needle 20 in the secondary piston seat 9---the structure that needle 20 is housed is referring to shown in Figure 2, back piston seat 10 is located in the roof (diapire in back piston chamber just) in secondary piston chamber by the seal ring activity, before, before back piston body 7 and 8 is movably arranged on respectively, in the back piston chamber, and secondary piston body 7 is divided into preceding first chamber 11 and preceding second chamber 12 of mutual sealing by seal ring with the secondary piston chamber, and back piston body 8 is divided into the back piston chamber by seal ring back first chamber 13 and second chamber 14, back of mutual sealing; Usually offer three preceding gas ports of evenly arranging 15 of going up that communicate with preceding first chamber 11 on the preceding cylindrical shell 1, offer the preceding gas port 16 down that communicates with preceding second chamber 12 in the top cover 3; Offer the back gas circuit 18 that goes up gas port 17 and be communicated with preceding first chamber 11 and second chamber 14, back that communicates with first chamber 13, back on the rear cylinder body 2.

Claims

1. cylinder, comprise: cylinder body and piston, it is characterized in that: described cylinder body is two-layer at least multi-layer structure, that is: be provided with at least two piston cavity in the cylinder body, each piston cavity is provided with the ventilation loop, described piston comprises: piston seat and be arranged on the piston seat, with the corresponding a plurality of piston bodies of piston cavity, described piston seat passes through all piston cavity and seals mutually with cylinder body, each piston body all is movably arranged in the corresponding piston chamber, and the corresponding piston chamber is divided into two half chambeies of sealing mutually.

2. cylinder as claimed in claim 1, it is characterized in that: described cylinder body is a double layer construction, that is: be provided with former and later two piston cavity in the cylinder body, before, the back piston chamber is provided with the ventilation loop, described piston comprises: piston seat and be arranged on the piston seat before, the back piston body, the piston seat sealing is located in the roof in secondary piston chamber, before, before the back piston body is movably arranged on respectively, in the back piston chamber, and the secondary piston body is divided into the secondary piston chamber in preceding first chamber and first chamber, back of mutual sealing, and the back piston body is divided into the back piston chamber in preceding second chamber and second chamber, back of mutual sealing.

3. cylinder as claimed in claim 2 is characterized in that: the concrete set-up mode in the ventilation loop in described secondary piston chamber is: offer at least one preceding upward gas port that communicates with preceding first chamber and the preceding time gas port that at least one communicates with preceding second chamber on the described cylinder body; The concrete set-up mode in the ventilation loop in described back piston chamber is: offer the back gas circuit that goes up gas port and preceding first chamber of connection and second chamber, back that at least one communicates with first chamber, back on the cylinder body.