High-reliability one-way lock

Abstract

The utility model provides a high-reliability one-way lock which comprises a valve body, a valve cavity is formed in the valve body, a piston is movably arranged in the valve cavity, an end sleeve is arranged at one end of the valve cavity, a supporting seat is arranged at one end of the end sleeve, a valve rod is movably arranged in the end sleeve and the supporting seat, a sliding hole is formed in one end of the supporting seat, and the valve rod is arranged in the sliding hole. A circle of oil groove is formed in the inner diameter surface of the sliding hole along the axis, lubricating oil is arranged in the oil groove, one end of the valve rod penetrates through the sliding hole and makes contact with the piston, and the inner diameter surface of the sliding hole makes contact with the diametral plane of the valve rod. The valve rod is supported through the supporting seat, the phenomena of axial deviation or shaking and the like during sliding of the sliding rod are avoided, the sliding stability and reliability of the valve rod are improved, the oil groove is formed in the inner diameter of the sliding hole, the diametral plane of the valve rod is lubricated, friction force between the valve rod and the supporting seat is reduced, and abrasion resistance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of one-way locks, and particularly relates to a one-way lock with high reliability. Background Art

[0002] The one-way lock is one of the important accessories of the hydraulic support, and is mainly used for controlling the actuator in the hydraulic system1. Its main function is to allow the hydraulic oil to flow in a specific direction while preventing its reverse flow, so as to realize the control of the movement of the actuator. The one-way lock includes components such as a valve body, a valve cavity, a valve seat, a valve core, a valve core return spring, a liquid inlet and a liquid outlet.

[0003] The existing one-way lock does not have a support mechanism for the valve stem. Therefore, when the valve stem slides, axial offset or shaking is likely to occur, resulting in poor stability and reliability. Moreover, there is more friction between the valve stem and the valve body, resulting in wear of the valve stem and the valve body, reducing the sealing performance and service life of the one-way lock. Summary of the Utility Model

[0004] The utility model aims to provide a one-way lock with high reliability to solve the problems put forward in the above background art.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A one-way lock with high reliability includes a valve body. A valve cavity is provided inside the valve body. A piston is movably arranged in the valve cavity. An end sleeve is arranged at one end of the valve cavity. A support seat is arranged at one end of the end sleeve. A valve stem is movably arranged in the end sleeve and the support seat. A sliding hole is arranged at one end of the support seat. An oil sealing groove is arranged along the axis on the inner diameter surface of the sliding hole. Lubricating oil is arranged in the oil sealing groove. One end of the valve stem passes through the sliding hole and contacts the piston. The inner diameter surface of the sliding hole contacts the diameter surface of the valve stem.

[0007] Preferably, a first spring groove is arranged at one end of the end sleeve, and a second spring groove is arranged at one end of the valve stem. A return spring is arranged in the first spring groove and the second spring groove.

[0008] Preferably, a plug is arranged at one end of the valve cavity.

[0009] Advantageous Effects

[0010] One or more of the above technical solutions in the one-way lock with high reliability provided by the embodiment of the utility model at least have the following technical effects:

[0011] The utility model adopts the above technical scheme, by providing a support seat for the valve stem, avoiding axial deviation or shaking when the sliding rod slides, thereby improving the stability and reliability of the valve stem sliding, and by providing an oil groove in the inner diameter of the sliding hole, the valve stem diameter surface is lubricated, the friction between the valve stem and the support seat is reduced, and the wear resistance of the valve stem is improved, thereby increasing the service life of the one-way lock and significantly improving the reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0013] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at point A;

[0014] The corresponding relationship between the various figure labels and component names in the figure is as follows:

[0015] 1. Valve body; 2. Valve chamber; 3. Piston; 4. End sleeve; 5. Support seat; 6. Valve stem; 7. Sliding hole; 8. Oil groove; 9. Spring groove 1; 10. Spring groove 2; 11. Reset spring; 12. Blockage. DETAILED DESCRIPTION

[0016] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0018] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] like Figure 1-2As shown, it is a schematic structural diagram of a one-way lock with high reliability according to a preferred embodiment of the present utility model;

[0020] In this embodiment, it includes a valve body 1. A valve cavity 2 is provided inside the valve body 1. A piston 3 is movably arranged in the valve cavity 2. One end of the valve cavity 3 is fixedly clamped with an end sleeve 4. One end of the end sleeve 4 is fixedly clamped with a support seat 5. A valve rod 6 is movably arranged in the end sleeve 4 and the support seat 5. One end of the support seat 5 is provided with a sliding hole 7. The inner diameter surface of the sliding hole 7 is provided with an oil groove 8 along the axis for one week. Lubricating oil is provided in the oil groove 8. One end of the valve rod 6 passes through the sliding hole 7 and contacts the piston 3. The support seat 5 provides support for the valve rod 6 to avoid phenomena such as axial deviation or shaking when the valve rod 6 slides, and improves the sliding stability of the valve rod 6. The inner diameter surface of the sliding hole 7 contacts the radial surface of the valve rod 6. The valve rod 6 can perform linear reciprocating sliding along the sliding hole 7. Through the oil groove 8, the radial surface of the valve rod 6 is lubricated, reducing the friction force between the valve rod 6 and the support seat 5, thereby reducing the friction force between the valve rod 6 and the valve body 1 and improving the service life of the one-way lock.

[0021] In this embodiment, one end of the end sleeve 4 is provided with a first spring groove 9. One end of the valve rod 6 is provided with a second spring groove 11. A return spring 11 is provided in the first spring groove 9 and the second spring groove 10. The return spring 11 provides a return elastic force for the valve rod 6.

[0022] In this embodiment, one end of the valve cavity 2 is provided with a plug 12. The plug 12 is used to ensure the sealing performance of the valve cavity 2, prevent liquid leakage, and ensure the normal function of the one-way lock.

[0023] For a one-way lock with high reliability of the present utility model, its installation method, connection method or setting method are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented.

[0024] The technologies not described in detail in the present utility model are all well-known technologies. Those skilled in the art can easily implement the present utility model on the basis of understanding this specification, and the content shown in the drawings is a part of this specification.

[0025] The above content further elaborates on the present utility model in combination with specific implementation manners. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several simple deductions or replacements can still be made, which should all be regarded as belonging to the protection scope determined by the claims submitted for the present utility model.

Claims

1. A one-way lock with high reliability, comprising a valve body (1), characterized in that: A valve body (1) is internally provided with a valve cavity (2). A piston (3) is movably arranged in the valve cavity (2). One end of the valve cavity (2) is provided with an end sleeve (4). One end of the end sleeve (4) is provided with a support seat (5). A valve rod (6) is movably arranged in the end sleeve (4) and the support seat (5). One end of the support seat (5) is provided with a sliding hole (7). An oil groove (8) is arranged along the axis on the inner diameter surface of the sliding hole (7). Lubricating oil is arranged in the oil groove (8). One end of the valve rod (6) passes through the sliding hole (7) and contacts the piston (3). The inner diameter surface of the sliding hole (7) contacts the diameter surface of the valve rod (6).

2. The one-way lock with high reliability according to claim 1, characterized in that: One end of the end sleeve (4) is provided with a first spring groove (9). One end of the valve rod (6) is provided with a second spring groove (10). A return spring (11) is arranged in the first spring groove (9) and the second spring groove (10).

3. The one-way lock with high reliability according to claim 1, characterized in that: One end of the valve cavity (2) is provided with a plug (12).

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