Oil cylinder
阅读说明：本技术 一种油缸 (Oil cylinder ) 是由 黄洪刚 张柏 于 2020-06-01 设计创作，主要内容包括：本发明提出一种油缸,包括：缸壳；缸筒；端盖；活塞；手柄；单向阀。根据本发明的一种油缸,可以改变活塞杆伸出的距离。(The invention provides an oil cylinder, which comprises: a cylinder shell; a cylinder barrel; an end cap; a piston; a handle; a one-way valve. According to the oil cylinder, the extending distance of the piston rod can be changed.)
1. An oil cylinder, characterized by comprising:
the cylinder shell is provided with a cylinder shell blind hole with an opening at the right end, the side wall of the cylinder shell is provided with a first oil port and a second oil port positioned on the right side of the first oil port, and the inner peripheral wall of the cylinder shell is provided with a first annular groove positioned on the right side of the second oil port and communicated with the second oil port;
the cylinder barrel is coaxially and rotatably matched in the cylinder shell and provided with a cylinder barrel blind hole with an opening at the right end, a second annular groove matched with the first oil port is formed in the peripheral wall of the cylinder barrel, a first through hole is formed in the second annular groove, a plurality of through grooves which are arranged at intervals and extend along the axial direction of the cylinder barrel are formed in the peripheral wall of the cylinder barrel, the lengths of the through grooves are different from each other, the right end of each through groove is flush with the right end of the second oil port, a second through hole is formed in the left end of each through groove, each second through hole is located on the right side of the first oil port, a third through hole corresponding to the first annular groove is formed in the side wall of the cylinder barrel, and one of the through grooves is selectively communicated with the second oil port;
the end cover is arranged at the right end of the cylinder shell to respectively seal the right ends of the cylinder shell blind hole and the cylinder barrel blind hole;
the piston is arranged in the cylinder barrel in a left-right moving mode and comprises a body section and a reducing section located on the right side of the body section, and the right end of the reducing section extends out of the end cover rightwards;
the handle is rotatably arranged at the left end of the cylinder shell and is fixedly connected with the left end of the cylinder barrel;
and the check valve is arranged in the third through flow hole to normally close the third through flow hole.
2. The oil cylinder according to claim 1, characterized in that the first through-flow hole is plural and the plural first through-flow holes are arranged at regular intervals in the circumferential direction of the cylinder tube.
3. The cylinder of claim 1, wherein a plurality of the flow channels are evenly spaced along a circumference of the cylinder barrel.
4. The cylinder of claim 1, wherein the width of each flow through groove is the same as the diameter of the second oil port.
Technical Field
The invention belongs to the field of hydraulic power executing elements, and particularly relates to an oil cylinder with an adjustable stroke.
Background
The oil cylinder is a linear motion type actuating element commonly used in a hydraulic system and is mainly divided into a piston type, a plunger type and a telescopic type according to different structural modes. The oil cylinder has simple structure, reliable work and wide application, and is directly connected with the working mechanism. The stroke and the installation distance of the oil cylinder are one of important parameters in the design work of the whole mechanism. However, in the actual use process, the host customer sometimes needs the stroke and the installation distance of the oil cylinder to be adjustable, and the transmission of the mechanism can be realized within a certain range. Even some host operating mechanisms need to dynamically adjust the stroke and the installation distance of the oil cylinder in the debugging or working process. The stroke and the installation distance of the common oil cylinder are fixed and cannot be adjusted; the prior art center has some hydro-cylinders that can adjust the stroke, but mostly need with the locator with step up to fix on the piston rod, can produce certain harm to the piston rod like this, be unfavorable for fluid seal.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
To this end, it is an object of the invention to provide a cylinder in which the distance over which the piston rod extends can be varied.
According to an embodiment of the present invention, an oil cylinder includes:
the cylinder shell is provided with a cylinder shell blind hole with an opening at the right end, the side wall of the cylinder shell is provided with a first oil port and a second oil port positioned on the right side of the first oil port, and the inner peripheral wall of the cylinder shell is provided with a first annular groove positioned on the right side of the second oil port and communicated with the second oil port;
the cylinder barrel is coaxially and rotatably matched in the cylinder shell and provided with a cylinder barrel blind hole with an opening at the right end, a second annular groove matched with the first oil port is formed in the peripheral wall of the cylinder barrel, a first through hole is formed in the second annular groove, a plurality of through grooves which are arranged at intervals and extend along the axial direction of the cylinder barrel are formed in the peripheral wall of the cylinder barrel, the lengths of the through grooves are different from each other, the right end of each through groove is flush with the right end of the second oil port, a second through hole is formed in the left end of each through groove, each second through hole is located on the right side of the first oil port, a third through hole corresponding to the first annular groove is formed in the side wall of the cylinder barrel, and one of the through grooves is selectively communicated with the second oil port;
the end cover is arranged at the right end of the cylinder shell to respectively seal the right ends of the cylinder shell blind hole and the cylinder barrel blind hole;
the piston is arranged in the cylinder barrel in a left-right moving mode and comprises a body section and a reducing section located on the right side of the body section, and the right end of the reducing section extends out of the end cover rightwards;
the handle is rotatably arranged at the left end of the cylinder shell and is fixedly connected with the left end of the cylinder barrel;
and the check valve is arranged in the third through flow hole to normally close the third through flow hole.
Advantageously, the first through-flow holes are multiple and are evenly spaced along the circumference of the cylinder.
Advantageously, a plurality of the through-flow grooves are arranged at regular intervals along the circumferential direction of the cylinder barrel.
Advantageously, the width of each through flow groove is the same as the aperture of the second oil port.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic view of a cylinder according to one embodiment of the present invention;
fig. 2 is a schematic view of a cylinder tube in a cylinder according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A cylinder according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, a cylinder according to an embodiment of the present invention includes:
Specifically, the
The
The
The
The
A
Taking the initial position shown in fig. 1 as an example, when the oil cylinder according to the embodiment of the present invention works, the
When the oil cylinder retracts, oil in the second oil port B can enter the piston cavity through the first
Since the lengths of the plurality of through-
The oil cylinder provided by the embodiment of the invention has the advantages that:
1. the cylinder barrel can be controlled to rotate through the handle, one of the through flow grooves can be selected to be communicated with the second oil port B, the extending distance of the piston rod can be changed, and the adjustment is simple and convenient;
2. the piston rod is not damaged because the positioner is not tightly arranged on the piston rod.
According to the oil cylinder disclosed by the embodiment of the invention, the stroke can be adjusted, the structure is simple, and the processing is convenient.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
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