A fully clean hydraulic cylinder for making and starting

Abstract

The present invention belongs to the technical field of hydraulic cylinders, and particularly relates to a fully protected clean hydraulic oil cylinder for controlling and starting. Its structure includes a cylinder body, with a first liquid pipe and a second liquid pipe fixedly connected to both ends of the cylinder body respectively; a first ring plate fixedly connected to the outside of the cylinder body, and a second ring plate fixedly connected to the output shaft of the cylinder body, and a first corrugated hose fixedly arranged between the first ring plate and the second ring plate. The present invention has the following beneficial effects: a sealed first air cavity is provided to prevent dust from the output shaft of the cylinder body; another sealed second air cavity is provided; a through port connects the first air cavity and the second air cavity to form the same space, and when the output shaft of the cylinder body is extended and retracted, the air in the first air cavity is exchanged with the second air cavity, and will not come into contact with the external air, and the dustproof strength is almost 100%; the first ring plate is provided on the outside of the cylinder body at a distance from one end of the protruding port of the cylinder body output shaft, so that the first corrugated hose can be compressed at the outer side of the cylinder body, thereby reducing the space occupied for extension and retraction and improving practicality.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic cylinders, and in particular relates to a fully clean hydraulic oil cylinder for making and starting hydraulic cylinders. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). When using it to achieve reciprocating motion, the deceleration device can be eliminated, and there is no transmission annular gap, and the movement is smooth. Therefore, it is widely used in the hydraulic systems of various machines.

[0003] When the hydraulic cylinder is braking or starting, the output shaft is extended and retracted. At this time, the output shaft is exposed to the outside, exposed to the external environment, contaminated by dust and other dirt, and accumulates dirt in the retracted position. In this regard, there are (Application No.: CN201220298853.4, a dust-proof hydraulic cylinder) and (Application No.: CN201921220038.4, a dust-proof hydraulic cylinder), which use "dust-proof corrugated hoses" and "dust-proof sleeves" (e.g., made of rubber with a corrugated structure, having certain tensile properties and certain structural strength, so that the axial deformation is within a controllable range) to cover the position of the output shaft of the hydraulic cylinder and block it;

[0004] However, due to the limited position of the liquid inlet and outlet pipes, one end of the telescopic tube needs to be fixed close to the position where the output shaft extends. At this time, due to the telescopic tube itself, the output shaft needs to be exposed to a certain length, resulting in increased space and low practicality.

[0005] In addition, the existing ones (such as application number: CN201922301004.4, a dust-proof hydraulic cylinder) are provided with components such as "air ducts" for ventilation with the outside world through "bellows". Although filtering components are applied, the output shaft of the hydraulic cylinder will still be extended and contacted with external dust, and the protection is insufficient. Summary of the Invention

[0006] (1) Technical issues to be solved

[0007] In order to overcome the shortcomings of the existing technology, a fully clean hydraulic cylinder for controlling and starting is proposed to solve the problems raised by the above background technology.

[0008] (2) Technical solution

[0009] The present invention is achieved through the following technical solutions: The present invention proposes a control and start full-protection clean hydraulic oil cylinder, comprising a cylinder body, with a first liquid pipe and a second liquid pipe respectively fixedly connected at both ends of the cylinder body;

[0010] A first ring plate is fixedly connected to the outer side of the cylinder body, a second ring plate is fixedly connected to the output shaft of the cylinder body, a first corrugated hose is fixedly provided between the first ring plate and the second ring plate, and a first air cavity is formed between the first ring plate, the second ring plate and the first corrugated hose;

[0011] A third ring plate is provided on the outside of the cylinder body, and a universal ball is fixed on the inside of the third ring plate. The outer side of the universal ball is in contact with the inner wall of the strip groove and rolls. The strip groove is provided on the outside of the cylinder body.

[0012] A second corrugated hose and a third corrugated hose are fixedly provided between the third ring plate and the first ring plate, the second corrugated hose being provided outside the third corrugated hose, and a second air cavity is formed between the third ring plate, the first ring plate, the second corrugated hose and the third corrugated hose, and the maximum space of the second air cavity is not less than the maximum space of the first air cavity;

[0013] Through openings are provided at both ends of the first ring plate, and the first air cavity is connected to the second air cavity through the through openings;

[0014] The two ends of the outer side of the first ring plate are connected by a liquid channel, one end is connected to the outer sides of the first corrugated hose and the second corrugated hose, and the other end is connected to the second liquid pipe.

[0015] Furthermore, the first ring plate is closer to the second ring plate than the third ring plate.

[0016] Furthermore, the second liquid pipe is closer to the second ring plate than the first liquid pipe.

[0017] Furthermore, the universal ball bearings are provided in multiple groups and are evenly distributed on the inner side of the third ring plate.

[0018] Furthermore, a rubber layer is provided on the inner wall of the strip-shaped groove.

[0019] (3) Beneficial effects

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] A first ring plate 4 is provided on the outside of the cylinder body 1, a second ring plate 5 is provided on the output shaft of the cylinder body 1, and a first corrugated hose 6 is provided between the first ring plate 4 and the second ring plate 5, so as to cover the output shaft of the cylinder body 1. A sealed first air cavity 7 is formed between the first ring plate 4 and its connection end with the cylinder body 1, the second ring plate 5 and its connection end with the output shaft of the cylinder body 1, and the inner side of the first corrugated hose 6, so as to achieve a dust-proof effect on the output shaft of the cylinder body 1.

[0022] By setting the third ring plate 8 on the outside of the cylinder body 1, the inner side of the third ring plate 8 is provided with a universal ball

[0023] 9 is guided and slid at the strip groove 10 on the outside of the cylinder body 1, and another sealed second air cavity 13 is formed between the first ring plate 4, the third ring plate 8, the second corrugated hose 11, and the third corrugated hose 12;

[0024] A through hole 14 is provided on the first ring plate 4, which connects the first air cavity 7 and the second air cavity

[0025] 13 forms the same space. At this time, when the output shaft of the cylinder body 1 is extended and retracted, the first air chamber 7 is deformed and compressed. The air in the first air chamber 7 is exchanged with the second air chamber 13 without contacting the external air. The dustproof strength is almost 100%;

[0026] When setting the first ring plate 4, it is set on the outside of the cylinder body 1 at a distance from one end of the protruding port of the output shaft of the cylinder body 1, so that when the first corrugated hose 6 is compressed, it can be compressed on the outer side of the cylinder body 1 instead of being compressed on the outer side of the output shaft of the cylinder body 1, resulting in occupying the telescopic space. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0028] Figure 1 It is a structural schematic diagram of the present invention;

[0029] In the figure: cylinder body 1, first liquid pipe 2, second liquid pipe 3, first ring plate 4, second ring plate 5, first corrugated hose 6, first air cavity 7, third ring plate 8, universal ball 9, strip groove 10, second corrugated hose 11, third corrugated hose 12, second air cavity 13, port 14, liquid channel 15. DETAILED DESCRIPTION

[0030] See also Figure 1 The present invention provides a fully clean hydraulic cylinder for starting and controlling: comprising a cylinder body 1 (the main body of the hydraulic cylinder), with a first liquid pipe 2 and a second liquid pipe 3 (both pipes for circulating hydraulic oil to the interior of the cylinder body 1) fixedly connected at both ends of the cylinder body 1;

[0031] The second liquid pipe 3 is closer to the second ring plate 5 than the first liquid pipe 2 (as shown in the figure, the first liquid pipe 2 is arranged on the left side of the second liquid pipe 3 ).

[0032] See also Figure 1A first ring plate 4 is fixedly connected to the outside of the cylinder body 1 {its inner ring side is fixed to the outside of the cylinder body 1 and is annular and fully adherent. As shown in the figure, the first ring plate 4 is installed at a distance from the protruding port of the output shaft of the cylinder body 1. This distance allows the first corrugated hose 6 to be compressed at the outer side of the cylinder body 1 (i.e., at this distance) when compressed, without being compressed at the outer side of the output shaft of the cylinder body 1, resulting in occupying the telescopic space};

[0033] The output shaft of the cylinder body 1 is fixedly connected with a second ring plate 5 (preferably, the inner ring side of the second ring plate 5 is fully surrounded and fixed at a position close to the end of the output shaft of the cylinder body 1);

[0034] A first corrugated hose 6 is fixedly installed between the first ring plate 4 and the second ring plate 5 (as shown in the figure, the two ends of the first corrugated hose 6 are respectively sealed to connect the first ring plate 4 and the second ring plate 5, and a part of the cylinder body 1 and the output shaft of the cylinder body 1 are sleeved on the inner side);

[0035] According to the above, a first air cavity 7 (a sealed space) is formed between a portion of the cylinder body 1, the output shaft of the cylinder body 1, the first ring plate 4, the second ring plate 5 and the first corrugated hose 6;

[0036] See also Figure 1 , a third ring plate 8 is provided on the outside of the cylinder body 1 (surrounding the outside of the cylinder body 1);

[0037] Wherein, the first ring plate 4 is closer to the second ring plate 5 than the third ring plate 8;

[0038] A universal ball 9 is fixed on the inner side of the third ring plate 8;

[0039] The outer side of the universal ball 9 is in contact with the inner wall of the strip groove 10 and rolls. The strip groove 10 is arranged on the outer side of the cylinder body 1 (arranged according to the movable direction of the output shaft of the cylinder body 1), providing a positioning guide and improving the movable support stability of the third ring plate 8;

[0040] The inner wall of the strip groove 10 is provided with a rubber layer, which is flexible and wear-resistant, thereby further improving the sliding stability of the third ring plate 8 and increasing its service life.

[0041] The universal ball bearings 9 are provided in multiple groups and are evenly distributed on the inner side of the third ring plate 8 (similarly, the outer side of the cylinder body 1 is provided with strip grooves 10 that match the multiple groups of universal ball bearings 9 one by one). The reasonable arrangement position improves the stability of use.

[0042] See also Figure 1 A second corrugated hose 11 and a third corrugated hose 12 are fixed between the third ring plate 8 and the first ring plate 4 (as shown in the figure, the two ends of the second corrugated hose 11 and the third corrugated hose 12 are sealedly connected to the third ring plate 8 and the first ring plate 4 respectively);

[0043] The second corrugated hose 11 is arranged outside the third corrugated hose 12;

[0044] A second air cavity 13 (another sealed space) is formed between the third ring plate 8, the first ring plate 4, the second corrugated hose 11 and the third corrugated hose 12;

[0045] The maximum space of the second air cavity 13 is not less than the maximum space of the first air cavity 7, in order to ensure that the output shaft of the cylinder body 1 can move at its maximum;

[0046] Through-holes 14 are provided at both ends of the first ring plate 4, and the first air cavity 7 is connected with the second air cavity 13 through the through-holes 14, so as to connect the first air cavity 7 and the second air cavity 13 to form the same space;

[0047] The two ends of the outer side of the first ring plate 4 are connected by a liquid channel 15, one end is connected to the outside of the first corrugated hose 6 and the second corrugated hose 11, and the other end is connected to the second liquid pipe 3 (as shown in the figure, the second liquid pipe 3 is connected by the liquid channel 15 to achieve external connection to the hydraulic oil components).

[0048] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be included within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0049] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A fully clean hydraulic oil cylinder for making and starting a hydraulic oil cylinder, comprising a cylinder body (1), wherein both ends of the cylinder body (1) are respectively fixedly connected with a first liquid pipe (2) and a second liquid pipe (3); Its characteristics are: A first ring plate (4) is fixedly connected to the outside of the cylinder body (1), a second ring plate (5) is fixedly connected to the output shaft of the cylinder body (1), a first corrugated hose (6) is fixedly provided between the first ring plate (4) and the second ring plate (5), and a first air cavity (7) is formed between the first ring plate (4), the second ring plate (5) and the first corrugated hose (6); A third ring plate (8) is provided on the outside of the cylinder body (1), a universal ball (9) is fixed on the inside of the third ring plate (8), the outer side of the universal ball (9) is in contact with the inner wall of the strip groove (10) and rolls, and the strip groove (10) is provided on the outside of the cylinder body (1); A second corrugated hose (11) and a third corrugated hose (12) are fixedly provided between the third ring plate (8) and the first ring plate (4); the second corrugated hose (11) is provided outside the third corrugated hose (12); a second air cavity (13) is formed between the third ring plate (8), the first ring plate (4), the second corrugated hose (11) and the third corrugated hose (12); and the maximum space of the second air cavity (13) is not less than the maximum space of the first air cavity (7); Through-holes (14) are provided at both ends of the first ring plate (4), and the first air cavity (7) is connected to the second air cavity (13) through the through-holes (14); The two ends of the outer side of the first ring plate (4) are connected by a liquid channel (15), one end of which is connected to the outer sides of the first corrugated hose (6) and the second corrugated hose (11), and the other end of which is connected to the second liquid pipe (3).

2. The fully clean hydraulic cylinder for controlling and starting according to claim 1, characterized in that: The first ring plate (4) is closer to the second ring plate (5) than the third ring plate (8).

3. The fully clean hydraulic cylinder for controlling and starting according to claim 1, characterized in that: The second liquid pipe (3) is closer to the second ring plate (5) than the first liquid pipe (2).

4. The fully clean hydraulic cylinder for controlling and starting according to claim 1, characterized in that: The universal balls (9) are provided in multiple groups and are evenly distributed on the inner side of the third ring plate (8).

5. The fully clean hydraulic cylinder for controlling and starting according to claim 1, characterized in that: The inner wall of the strip-shaped groove (10) is provided with a rubber layer.

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