CN203335521U

CN203335521U - Hydraulic oil cylinder

Info

Publication number: CN203335521U
Application number: CN2013204114036U
Authority: CN
Inventors: 陈巨龙; 倪建林; 许志明; 高峰
Original assignee: ZHEJIANG CHANGXING JUYUAN MACHINERY CO Ltd
Current assignee: Zhejiang Juyuan Power Equipment Co ltd
Priority date: 2013-07-11
Filing date: 2013-07-11
Publication date: 2013-12-11
Anticipated expiration: 2023-07-11

Abstract

The utility model relates to a device capable of converting hydraulic energy into mechanical energy, in particular to a hydraulic oil cylinder. According to the technical scheme, the hydraulic oil cylinder comprises a cylinder barrel, a cylinder cover provided with an oil injection hole and connected to one end of the cylinder barrel in a sealing mode, a piston arranged in the cylinder barrel and a piston rod fixedly arranged on the piston and penetrating through the cylinder barrel; a first groove is formed in the side wall of the piston; a first O-type sealing ring and a first rectangular sealing ring located outside the first O-type sealing ring are embedded in the first groove. According to the hydraulic oil cylinder, the abrasion of the sealing rings is small and the sealing effect is good.

Description

A kind of hydraulic jack

Technical field

The utility model relates to the equipment that hydraulic energy is converted to mechanical energy, particularly a kind of hydraulic jack.

Background technique

Oil hydraulic cylinder of the prior art, between piston and cylinder barrel, often just by the O RunddichtringO, seal, yet the O RunddichtringO is suitable for static sealing, is applied between piston and cylinder barrel, in long-term use, easy to wear, causes plucking.

The model utility content

The purpose of this utility model is to provide a kind of hydraulic jack, and its ring wear is little, and has good sealing effect.

Above-mentioned technical purpose of the present utility model is achieved by the following technical programs: a kind of hydraulic jack, comprise cylinder barrel, be provided with oil hole and be sealedly attached to described cylinder barrel one end cylinder cap, be located at the piston in described cylinder barrel and be fixedly arranged on described piston and run through the piston rod of described cylinder barrel, have the first groove on the sidewall of described piston; Be embedded with an O RunddichtringO in described the first groove and be positioned at the first outer square RunddichtringO of a described O RunddichtringO.

As of the present utility model preferably, be fixedly connected with and be provided with the 2nd O RunddichtringO between the two by screw between described cylinder cap and cylinder barrel.

As of the present utility model preferred, the both sides of described the first groove also are respectively equipped with the second groove and the 3rd groove; Be embedded with the second square RunddichtringO in described the second groove; Be embedded with the 3rd square RunddichtringO in described the 3rd groove.

As of the present utility model preferably, described piston is divided into the oiling chamber by the inner chamber of described cylinder barrel and without oil pocket; Described without being provided with the elastic component be placed in outside described piston rod in oil pocket.

As of the present utility model preferred, described elastic component is spring.

As of the present utility model preferred, described the second square RunddichtringO is identical with the 3rd square RunddichtringO structure.

As of the present utility model preferred, the width of described the second square RunddichtringO is greater than described the first square RunddichtringO.

As of the present utility model preferred, the density of described the first square RunddichtringO is 0.5-0.8cm; The width of the second square RunddichtringO is 1-1.5cm.

In sum, the utlity model has following beneficial effect: the utility model is simple in structure, easy to implement; By being combined with of the O RunddichtringO in the first groove and the first square RunddichtringO, make the utlity model has on the one hand good sealing effect, by the protection of the first square RunddichtringO, O RunddichtringO wearing and tearing are reduced on the other hand, can not cause the plucking phenomenon; And the first square RunddichtringO is that face contacts due to itself with inner wall of cylinder, wear and tear less, can not cause the plucking phenomenon; For further improving sealing effect, also be arranged with two square RunddichtringOs in the both sides of the first groove, be respectively the second square RunddichtringO and the 3rd square RunddichtringO; And the width of the second square RunddichtringO and the 3rd square RunddichtringO is larger than the first square type sealing; The setting of elastic component makes oil cylinder after emptying, and its piston can returning position.

The accompanying drawing explanation

Fig. 1 is the example structure schematic diagram;

Fig. 2 is A section enlarged diagram in Fig. 1;

Fig. 3 is piston structure schematic diagram in embodiment.

In figure, 1, cylinder barrel, 11, the oiling chamber, 12, without oil pocket, 2, cylinder cap, the 21, the 2nd O RunddichtringO, 22, oil hole, 3, piston, the 31, first groove, 32, the second groove, the 33, the 3rd groove, 4, piston rod, 41, an O RunddichtringO, the 42, first square RunddichtringO, the 43, second square RunddichtringO, 44, the 3rd square RunddichtringO, 5, elastic component.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

This specific embodiment is only to explanation of the present utility model; it is not to restriction of the present utility model; those skilled in the art can make to the present embodiment the modification that there is no creative contribution as required after reading this specification, but as long as all are subject to the protection of Patent Law in claim scope of the present utility model.

Embodiment: as Figure 1-3, a kind of hydraulic jack, comprise cylinder barrel 1, an end fixing seal at cylinder barrel 1 is provided with cylinder cap 2, between cylinder cap 2 and cylinder barrel 1, by screw, achieve a fixed connection, and the sidewall at cylinder cap 2 is provided with the 2nd O RunddichtringO 21, by the 2nd O RunddichtringO 21, realizes the sealing between cylinder barrel 1 and cylinder cap 2; And be provided with oil hole 22 at the middle part of cylinder cap 2.

Also be provided with piston 3 in cylinder barrel 1, between piston 3 sidewalls and cylinder barrel 1 inwall, seal, and for realizing the wearing and tearing of good sealing and minimizing seal ring, have the first groove 31 at piston 3 sidewall middle parts, the first groove 31 is embedded with an O RunddichtringO 41 and the first square RunddichtringO 42, and the first square RunddichtringO 42 is positioned at outside an O RunddichtringO 41, the first square RunddichtringO 42 is contacted with cylinder barrel 1 inwall, and the first square RunddichtringO 42 is because the effect of an O RunddichtringO 41 makes more tightening seal of the first square RunddichtringO 42 middle parts and cylinder barrel 1 inwall, thereby, make the present embodiment not only there is good sealing effect, also due to the setting of the first square RunddichtringO 42, the wearing and tearing less, be difficult for causing the plucking phenomenon, for further improving sealing effect, the both sides of groove 31 also are arranged with respectively the second groove 32 and the 3rd groove 33, be embedded with the second square RunddichtringO 43 in the second groove 32, be embedded with the 3rd square RunddichtringO 44 in the 3rd groove 33, the second square RunddichtringO 43 is identical with the 3rd square RunddichtringO 44 structures, and the width of the second square RunddichtringO 43 is greater than the first square RunddichtringO 42, the density of the first square RunddichtringO 42 is 0.5-0.8cm, the width of the second square RunddichtringO 43 and the 3rd square RunddichtringO 44 is 1-1.5cm.

Piston 3 is divided into oiling chamber 11 by the inner chamber of cylinder barrel 1 and without oil pocket 12; And be fixedly connected with on piston 3 through extend to the outer piston rod 4 of cylinder barrel 1 without oil pocket 12, without also being provided with in oil pocket 12, be placed in the outer elastic component 5 of piston rod 4; Elastic component 5 is spring.

Claims

1. a hydraulic jack, comprise cylinder barrel (1), be provided with oil hole (22) and be sealedly attached to described cylinder barrel (1) one end cylinder cap (2), be located at the piston (3) in described cylinder barrel (1) and be fixedly arranged on described piston (3) and run through the piston rod (4) of described cylinder barrel (1), it is characterized in that, have the first groove (31) on the sidewall of described piston (3); Be embedded with an O RunddichtringO (41) in described the first groove (31) and be positioned at the first outer square RunddichtringO (42) of a described O RunddichtringO (41).

2. a kind of oil hydraulic cylinder according to claim 1, is characterized in that, between described cylinder cap (2) and cylinder barrel (1), by screw, is fixedly connected with and is provided with the 2nd O RunddichtringO (21) between the two.

3. a kind of oil hydraulic cylinder according to claim 2, is characterized in that, the both sides of described the first groove (31) also are respectively equipped with the second groove (32) and the 3rd groove (33); Be embedded with the second square RunddichtringO (43) in described the second groove (32); Be embedded with the 3rd square RunddichtringO (44) in described the 3rd groove (33).

4. a kind of oil hydraulic cylinder according to claim 3, is characterized in that, described piston (3) is divided into oiling chamber (11) by the inner chamber of described cylinder barrel (1) and without oil pocket (12); Described without being provided with the elastic component (5) be placed in outside described piston rod (4) in oil pocket (12).

5. a kind of oil hydraulic cylinder according to claim 4, is characterized in that, described elastic component (5) is spring.

6. a kind of oil hydraulic cylinder according to claim 5, is characterized in that, described the second square RunddichtringO (43) is identical with the 3rd square RunddichtringO (44) structure.

7. a kind of oil hydraulic cylinder according to claim 6, is characterized in that, the width of described the second square RunddichtringO (43) is greater than described the first square RunddichtringO (42).

8. a kind of oil hydraulic cylinder according to claim 7, is characterized in that, the density of described the first square RunddichtringO (42) is 0.5-0.8cm; The width of the second square RunddichtringO (43) is 1-1.5cm.