CN210637308U - One-way hydraulic oil cylinder - Google Patents

Abstract

The utility model discloses an one-way hydraulic cylinder, piston rod including the cylinder body with arrange the cylinder body in, cylinder body one end welding have the end cover, it has wear-resisting ring, sealing ring and dirt ring to fill between the cylinder body other end and the piston rod, the outside one side welding glib talker that is close to the end cover of cylinder body, is provided with the overflow valve in the glib talker, wear-resisting ring and sealing ring be equipped with a plurality ofly and the two interval arrangement, wear-resisting ring be equipped with 3, the sealing ring is equipped with two, the piston rod be located the part of cylinder body and cylinder body clearance fit and piston rod top processing have the chamfer, cylinder body end and piston rod between still install the dirt ring, the overflow valve install at the. The device adopts a three-level wear-resistant ring structure, so that the stability of the oil cylinder is kept, the overflow valve structure is arranged in the oil nozzle, the piston design is cancelled, the whole structure is simple, and the manufacturing cost is reduced.

Description

One-way hydraulic oil cylinder

Technical Field

The utility model relates to a hydraulic cylinder designs technical field, especially relates to an one-way hydraulic cylinder.

Background

In recent years, with the rapid development of economic construction, hydraulic cylinders with high standard, high performance and high safety performance are increasingly required in engineering machinery, production equipment and automobile industries. Some specific equipment needs to use unidirectional action, the single-acting oil cylinder on the market at present has the defects of complex structural design and unreliable performance, and the oil cylinders cannot meet the market requirements for some equipment with long-term action and high quality requirements.

The hydraulic oil cylinder in the prior art mainly has the following problems: the first and most single-acting oil cylinders use the piston as a stress area, and push the piston to move forwards when hydraulic oil is used for oil cylinder; secondly, the rod cavity has no hydraulic oil, so that the piston rod has a dry friction phenomenon, and the service life of the oil cylinder is greatly shortened; thirdly, the rod cavity has air pressure difference in the moving process of the piston, the piston rod cavity is provided with air flow breathing holes or gaps communicated with the outside so that air flows in and out, when the piston retracts, negative pressure is formed in the oil cylinder, and the air is sucked from the gaps and the breathing holes, so that dust and foreign matters in the air are brought in, and the service life of the oil cylinder is influenced in time.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's is not enough, provides an one-way hydraulic cylinder, and the device simplifies the structure of hydro-cylinder, reduces its manufacturing cost.

In order to achieve the above purpose, the utility model discloses a technical scheme is: the one-way hydraulic oil cylinder comprises a cylinder body and a piston rod arranged in the cylinder body, wherein an end cover is welded at one end of the cylinder body, a wear-resisting ring, a sealing ring and a dust ring are filled between the other end of the cylinder body and the piston rod, an oil nozzle is welded at one side, close to the end cover, of the outside of the cylinder body, and an overflow valve is arranged in the oil nozzle.

Further, the wear-resistant ring and the sealing ring are arranged in a plurality and spaced apart from each other.

Further, there are 3 wear-resistant rings and two sealing rings as described above.

Furthermore, the part of the piston rod positioned in the cylinder body is in clearance fit with the cylinder body, and the top of the piston rod is processed with a chamfer.

Furthermore, a dustproof ring is also arranged between the tail end of the cylinder body and the piston rod.

Further, the overflow valve is installed in the middle of the nozzle tip.

Compared with the prior art, the beneficial effects of the utility model are that: the device adopts a three-level wear-resistant ring structure, so that the stability of the oil cylinder is kept, the overflow valve structure is arranged in the oil nozzle, the piston design is cancelled, the whole structure is simple, and the manufacturing cost is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The labels in the figures are: 1. a dust ring; 2. a wear ring; 3. a cylinder body; 4. an overflow valve; 5. a nozzle tip; 6. an end cap; 7. a piston rod; 8. and (4) a sealing ring.

Detailed Description

The following detailed description is provided to further explain the technical features and advantages of the present invention by referring to the accompanying drawings in combination with the embodiments.

As shown in fig. 1, the utility model discloses an one-way hydraulic cylinder, piston rod 7 including cylinder body 3 with arranging cylinder body 3 in, 3 one end welding of cylinder body have end cover 6, it has wear ring 2, sealing ring 8 and dust ring 1 to fill between 3 other ends of cylinder body and the piston rod 7, 3 outside one side welding glib talkers 5 that are close to end cover 6 of cylinder body, be provided with overflow valve 4 in the glib talkers 5.

Furthermore, wear-resisting ring 2 and sealing ring 8 be equipped with a plurality ofly and the two interval arrangement, wear-resisting ring 2 be equipped with 3, sealing ring 8 is equipped with two, the part that the piston rod 7 is located cylinder body 3 and cylinder body 3 clearance fit and piston rod 7 top processing have a chamfer, 3 terminal and piston rod 7 of cylinder body between still install dust ring 1, overflow valve 4 install in the middle part of glib talker 5.

The single-acting oil cylinder in the prior art uses the piston, so that the processing time and materials are wasted, the piston is eliminated in the design scheme, the requirement of using equipment is met, and the manufacturing cost is reduced; secondly, in the single-acting oil cylinder in the prior art, the rod cavity has a dry friction phenomenon due to the absence of hydraulic oil, so that the service life of the oil cylinder is greatly shortened; then, in the single-acting oil cylinder motion system in the prior art, related oil path blocks or pipe fittings are required to be installed to prevent the oil cylinder from retracting rapidly, so that materials are increased and safety accidents caused by improper connecting pipelines are avoided, and the cost is increased; finally, the single-acting oil cylinder in the prior art is eccentric when moving, so that the use of equipment is influenced, and the service life of the oil cylinder is shortened

The utility model discloses the theory of operation of device does, and the hydro-cylinder is at welded glib talker 5 department oil feed, along with pressure increases, exerts pressure at the terminal surface of piston rod 7, withdraws from piston rod 7, and when piston rod 7 withdraws, the oil pump does not provide pressure, and piston rod 7 withdraws under the equipment dead weight condition, and remaining hydraulic oil passes through the return-to-oil tank of overflow valve 4 ration in the cylinder body 3. The parts such as the dust ring 1, the wear-resisting ring 2, the overflow valve 4 and the like are the prior art or materials, and the technical personnel can directly purchase or order from the market according to the required product model and specification.

The electrical components are electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device for controlling a computer and the like.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

The present invention is described in detail in the above embodiments, and it should be understood that the described embodiments are not limited to the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Claims (6)

1. The one-way hydraulic oil cylinder comprises a cylinder body and a piston rod arranged in the cylinder body, and is characterized in that one end of the cylinder body is welded with an end cover, a wear-resisting ring, a sealing ring and a dust ring are filled between the other end of the cylinder body and the piston rod, an oil nozzle is welded on one side, close to the end cover, of the outside of the cylinder body, and an overflow valve is arranged in the oil nozzle.

2. A unidirectional hydraulic ram according to claim 1 wherein a plurality of said wear rings and said sealing rings are spaced apart.

3. A unidirectional hydraulic ram as claimed in claim 2 wherein there are 3 wear rings and two seal rings.

4. A one-way hydraulic ram according to claim 3 wherein the portion of the piston rod within the cylinder is in clearance fit with the cylinder and a chamfer is machined on the top of the piston rod.

5. The unidirectional hydraulic oil cylinder as claimed in claim 4, wherein a dust ring is further installed between the end of the cylinder body and the piston rod.

6. A hydraulic unidirectional ram according to claim 5 wherein the relief valve is mounted in the middle of the nozzle tip.

Images