Hydraulic cylinder for agricultural and pastoral machine

Abstract

The utility model provides a hydraulic cylinder for a farming machine, which relates to the technical field of hydraulic cylinders and comprises a hydraulic cylinder body, the bottom of the hydraulic cylinder body is provided with a notch, the inner bottom surface of the hydraulic cylinder body is provided with a through hole penetrating into the notch, and a support ring is fixed between the inner walls of the through hole and close to the edge of the bottom. According to the hydraulic cylinder, the through hole penetrating into the notch is formed in the inner bottom face of the hydraulic cylinder body, the conical block is arranged in the through hole, the conical face of the conical block is attached to the inner wall of the sealing ring, the sealing ring is fixed to the position, close to the top edge, between the inner walls of the through hole, and the conical block is arranged in the through hole. And when the internal pressure of the hydraulic cylinder body is large, the conical block is pressed downwards, so that the spring is pressed downwards, the internal pressure of the hydraulic cylinder body can be discharged to the outside through the through hole at the moment, the hydraulic cylinder body is protected, and the situation that internal original parts are damaged due to excessive internal pressure is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to a hydraulic cylinder for agricultural and animal husbandry machinery. Background Art

[0002] A hydraulic cylinder is an actuator in a hydraulic transmission system, an energy conversion device that converts hydraulic energy into mechanical energy. While a hydraulic motor achieves continuous rotary motion, a hydraulic cylinder achieves reciprocating motion. Hydraulic cylinders can be used individually or in combination with other mechanisms to accomplish specific functions. They are often used as power elements in agricultural and animal husbandry machinery.

[0003] At present, when hydraulic cylinders are used to lift heavy objects in agricultural and animal husbandry equipment, due to the reciprocating weight of agricultural and animal husbandry objects, when the heavy objects are lifted and bumped during the rising process, it will instantly impact the hydraulic cylinder, causing damage to the sealing components of the hydraulic cylinder and affecting the upper limit of the pressure lifting of the hydraulic cylinder. Utility Model Content

[0004] In order to solve the problems in the prior art, the utility model provides a hydraulic cylinder for agricultural and animal husbandry machinery.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] A hydraulic cylinder for agricultural and animal husbandry machinery includes a hydraulic cylinder body, a recess is provided at the bottom of the hydraulic cylinder body, a through hole is provided on the inner bottom surface of the hydraulic cylinder body and extends into the recess, a support ring is fixed between the inner walls of the through hole near the bottom edge, a sealing ring is fixed between the inner walls of the through hole near the top edge, a conical block is provided inside the through hole, and the conical surface of the conical block is in contact with the inner wall of the sealing ring.

[0007] Optionally, a gap is left between the outer surface of the conical block and the inner wall of the through hole, and a spring is fixed between the bottom of the conical block and the top of the support ring.

[0008] Optionally, a connecting flange is fixed to the outer surface of the hydraulic cylinder body near the bottom edge, and a piston is arranged between the inner walls of the hydraulic cylinder body.

[0009] Optionally, a push rod is fixed to the top of the piston, the top of the push rod passes through the top of the hydraulic cylinder body, and a docking joint is fixed to the top of the push rod.

[0010] Optionally, a first pipe is connected to the outer surface of the hydraulic cylinder body near the top edge, and a second pipe is connected to the outer surface of the hydraulic cylinder body near the bottom edge.

[0011] Optionally, an upper limit ring is provided between the inner walls of the hydraulic cylinder body near the bottom of the first pipe, and a lower limit ring is provided between the inner walls of the hydraulic cylinder body near the top of the second pipe, and the piston is located between opposite sides of the upper limit ring and the lower limit ring.

[0012] Optionally, two arc-shaped grooves are provided on the outer surface of the piston, and sealing rings are provided inside the two arc-shaped grooves.

[0013] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described below at the same time:

[0014] 1. In the present invention, a through hole is provided on the inner bottom surface of the hydraulic cylinder body, which penetrates into the inside of the recess, and a tapered block is provided inside the through hole, so that the tapered surface of the tapered block fits with the inner wall of the sealing ring, thereby cutting off the through hole. When the pressure inside the hydraulic cylinder body is high, the tapered block is pressed downward, so that the spring is pressed downward. At this time, the pressure inside the hydraulic cylinder body can be discharged to the outside through the through hole, thereby protecting the hydraulic cylinder body and preventing the internal components from being damaged by excessive internal pressure.

[0015] 2. In the present invention, a spring is fixed between the bottom of the conical block and the top of the support ring, so that the conical block can be lifted upward by the elastic force of the spring, thereby forming a certain sealing force between the sealing ring and the piston. The piston is arranged between the upper limit ring and the lower limit ring on the opposite side of the hydraulic cylinder body, which can prevent the piston from colliding with the inner wall of the hydraulic cylinder body when it is displaced to the maximum stroke. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] In the picture:

[0018] Figure 1 The utility model provides a schematic diagram of the main three-dimensional structure of a hydraulic cylinder for agricultural and animal husbandry machinery;

[0019] Figure 2 The utility model provides a bottom-up three-dimensional structural diagram of a hydraulic cylinder for agricultural and animal husbandry machinery;

[0020] Figure 3 The utility model provides a schematic diagram of a sectional three-dimensional structure of a hydraulic cylinder for agricultural and animal husbandry machinery;

[0021] Figure 4 For this utility model Figure 3 Magnified view at point A in the middle.

[0022] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0023] 1. Hydraulic cylinder body; 2. First pipeline; 3. Connecting flange; 4. Push rod; 5. Butt joint; 6. Upper limit ring; 7. Piston; 8. Arc groove; 9. Sealing ring; 10. Through hole; 11. Sealing ring; 12. Conical block; 13. Spring; 14. Support ring; 15. Notch; 16. Second pipeline; 17. Lower limit ring.

[0024] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0025] The present invention will now be described in further detail with reference to the accompanying drawings.

[0026] Example 1, as Figure 1-4 As shown, the utility model provides a technical solution for a hydraulic cylinder for agricultural and animal husbandry machinery: it includes a hydraulic cylinder body 1, a recess 15 is provided at the bottom of the hydraulic cylinder body 1, a through hole 10 is provided on the inner bottom surface of the hydraulic cylinder body 1 and penetrates into the inside of the recess 15, a support ring 14 is fixed between the inner walls of the through hole 10 near the bottom edge, a sealing ring 11 is fixed between the inner walls of the through hole 10 near the top edge, a conical block 12 is provided inside the through hole 10, and the conical surface of the conical block 12 fits with the inner wall of the sealing ring 11.

[0027] The effect achieved by the entire embodiment 1 is that a through hole 10 is opened on the inner bottom surface of the hydraulic cylinder body 1 and penetrates into the inside of the recess 15, and a conical block 12 is arranged inside the through hole 10, so that the conical surface of the conical block 12 fits with the inner wall of the sealing ring 11, thereby cutting off the through hole 10. When the internal pressure of the hydraulic cylinder body 1 is relatively high, the conical block 12 will be pressed downward, so that the spring 13 will be pressed downward. At this time, the pressure inside the hydraulic cylinder body 1 can be discharged to the outside from the through hole 10, thereby protecting the hydraulic cylinder body 1 and preventing the internal components from being damaged by excessive internal pressure.

[0028] Example 2, as Figure 1-4As shown, there is a gap between the outer surface of the conical block 12 and the inner wall of the through hole 10, a spring 13 is fixed between the bottom of the conical block 12 and the top of the support ring 14, a connecting flange 3 is fixed to the outer surface of the hydraulic cylinder body 1 near the bottom edge, a piston 7 is arranged between the inner walls of the hydraulic cylinder body 1, a push rod 4 is fixed to the top of the piston 7, the top of the push rod 4 passes through the top of the hydraulic cylinder body 1, a docking joint 5 is fixed to the top of the push rod 4, the outer surface of the hydraulic cylinder body 1 is connected to the first pipe 2 near the top edge, the outer surface of the hydraulic cylinder body 1 is connected to the second pipe 16 near the bottom edge, an upper limit ring 6 is arranged between the inner walls of the hydraulic cylinder body 1 near the bottom of the first pipe 2, a lower limit ring 17 is arranged between the inner walls of the hydraulic cylinder body 1 near the top of the second pipe 16, the piston 7 is located between the opposite sides of the upper limit ring 6 and the lower limit ring 17, and two arc grooves 8 are provided on the outer surface of the piston 7, and sealing rings 9 are arranged inside the two arc grooves 8.

[0029] The effect achieved by the entire embodiment 2 is that the spring 13 is fixed between the bottom of the conical block 12 and the top of the support ring 14, so that the conical block 12 can be lifted upward by the elastic force of the spring 13, thereby forming a certain sealing force between the sealing ring 11, and the piston 7 is arranged inside the hydraulic cylinder body 1 between the opposite sides of the upper limit ring 6 and the lower limit ring 17, which can prevent the piston 7 from colliding with the inner wall of the hydraulic cylinder body 1 when it is displaced to the maximum stroke.

[0030] Working principle: A through hole 10 is opened on the inner bottom surface of the hydraulic cylinder body 1 and extends into the inside of the recess 15, and a conical block 12 is arranged inside the through hole 10 so that the conical surface of the conical block 12 fits into the inner wall of the sealing ring 11, thereby cutting off the through hole 10. When the internal pressure of the hydraulic cylinder body 1 is high, the conical block 12 will be pressed downward, so that the spring 13 will be pressed downward. At this time, the pressure inside the hydraulic cylinder body 1 can be discharged to the outside through the through hole 10, thereby protecting the hydraulic cylinder body 1 and preventing the internal components from being damaged by excessive internal pressure. The spring 13 is fixed between the bottom of the conical block 12 and the top of the support ring 14, so that the conical block 12 can be lifted upward by the elastic force of the spring 13, thereby forming a certain sealing force between the sealing ring 11, and the piston 7 is arranged inside the hydraulic cylinder body 1 between the opposite sides of the upper limit ring 6 and the lower limit ring 17, which can prevent the piston 7 from colliding with the inner wall of the hydraulic cylinder body 1 when it is displaced to the maximum stroke.

[0031] The present invention is not limited to the above-described embodiments. Any structural changes made under the guidance of the present invention should be understood by anyone. Any technical solution that is the same or similar to the present invention falls within the scope of protection of the present invention. The technology, shape, and structure not described in detail in the present invention are all known technologies.

Claims

1. A hydraulic cylinder for agricultural and animal husbandry machinery, comprising a hydraulic cylinder body (1), characterized in that: The bottom of the hydraulic cylinder body (1) is provided with a notch (15), the inner bottom surface of the hydraulic cylinder body (1) is provided with a through hole (10) extending into the notch (15), a support ring (14) is fixed between the inner walls of the through hole (10) near the bottom edge, a sealing ring (11) is fixed between the inner walls of the through hole (10) near the top edge, a conical block (12) is provided inside the through hole (10), and the conical surface of the conical block (12) is in contact with the inner wall of the sealing ring (11).

2. A hydraulic cylinder for agricultural and animal husbandry machinery according to claim 1, characterized in that: A gap is left between the outer surface of the conical block (12) and the inner wall of the through hole (10), and a spring (13) is fixed between the bottom of the conical block (12) and the top of the support ring (14).

3. A hydraulic cylinder for agricultural and animal husbandry machinery according to claim 2, characterized in that: A connecting flange (3) is fixed to the outer surface of the hydraulic cylinder body (1) near the bottom edge, and a piston (7) is arranged between the inner walls of the hydraulic cylinder body (1).

4. A hydraulic cylinder for agricultural and animal husbandry machinery according to claim 3, characterized in that: A push rod (4) is fixed to the top of the piston (7), the top of the push rod (4) penetrates to the top of the hydraulic cylinder body (1), and a docking joint (5) is fixed to the top of the push rod (4).

5. The hydraulic cylinder for agricultural and animal husbandry machinery according to claim 4, characterized in that: The outer surface of the hydraulic cylinder body (1) is connected to a first pipe (2) near the top edge, and the outer surface of the hydraulic cylinder body (1) is connected to a second pipe (16) near the bottom edge.

6. A hydraulic cylinder for agricultural and animal husbandry machinery according to claim 5, characterized in that: An upper limit ring (6) is provided between the inner walls of the hydraulic cylinder body (1) near the bottom of the first pipe (2), and a lower limit ring (17) is provided between the inner walls of the hydraulic cylinder body (1) near the top of the second pipe (16), and the piston (7) is located between opposite sides of the upper limit ring (6) and the lower limit ring (17).

7. The hydraulic cylinder for agricultural and animal husbandry machinery according to claim 3, characterized in that: The outer surface of the piston (7) is provided with two arc-shaped grooves (8), and sealing rings (9) are arranged inside the two arc-shaped grooves (8).

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