Sealing mechanism of hydraulic oil cylinder

Abstract

The utility model relates to the technical field of hydraulic oil cylinders, in particular to a sealing mechanism of a hydraulic oil cylinder, which comprises a cylinder body, a telescopic rod is arranged at one end of the cylinder body, and a sealing shell is arranged outside the cylinder body; and the anti-collision assembly is mounted in the sealing shell. The elastic force is applied to the pressing ring through the first spring, it can be guaranteed that the pressing ring can be tightly attached to the connecting position of the cylinder body and the telescopic rod, the connecting position of the cylinder body and the telescopic rod is sealed through the sealing gasket, and compared with a traditional hydraulic oil cylinder, the sealing effect of the hydraulic oil cylinder is greatly improved; by means of the design of the anti-collision assembly, certain anti-collision capacity is added to the anti-collision hydraulic cylinder, compared with a traditional hydraulic cylinder, the anti-collision hydraulic cylinder can protect the connecting position of the cylinder body and the telescopic rod with certain capacity, the situation that the connecting position is affected by external force, the telescopic rod is inclined, and consequently pressure relief and the like are possibly caused is avoided, and practical safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil cylinders, in particular to a sealing mechanism of a hydraulic oil cylinder. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. It has a simple structure and reliable operation. When it is used to achieve reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap, and the movement is smooth. Therefore, it is widely used in the hydraulic systems of various machines. The output force of the hydraulic cylinder is proportional to the effective area of ​​the piston and the pressure difference on both sides. The hydraulic cylinder is mainly composed of a cylinder body and a telescopic rod, a sealing mechanism, a buffer device and an exhaust device. The buffer device and the exhaust device depend on the specific application occasion, and other devices are indispensable. In the existing sealing mechanism, the sealing effect of the hydraulic cylinder is low. When the telescopic rod is extended and retracted, it often squeezes out the hydraulic oil inside the cylinder body, causing the loss of hydraulic oil, affecting the service life of the hydraulic cylinder, and causing certain pollution to the environment. In addition, when the hydraulic cylinder is in use, the connection between the cylinder body and the telescopic rod is a relatively fragile position. If it is hit hard, it may cause the angle of the telescopic rod to deviate, and then cause the hydraulic cylinder to leak. Therefore, it is urgent to design a sealing mechanism for a hydraulic cylinder with anti-collision ability and strong sealing. Utility Model Content

[0003] The purpose of the utility model is to provide a sealing mechanism for a hydraulic cylinder to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A sealing mechanism of a hydraulic oil cylinder comprises: a cylinder body, one end of which is provided with a telescopic rod, and the outside of which is provided with a sealing shell; and an anti-collision component, which is installed in the sealing shell.

[0006] Preferably, a first sealing ring is provided on the inner side of the bottom end of the sealing housing, and the first sealing ring is fixed to the cylinder body by bolts, and the bolts are threadedly installed on the outer side of the bottom end of the sealing housing;

[0007] Preferably, a second sealing ring is provided on the inner side of the top end of the sealing shell, and the second sealing ring is clamped on the outside of the telescopic rod through the sealing shell;

[0008] Preferably, a first spring is provided on the top of the sealing housing, a pressure ring is provided below the first spring, the pressure ring is sleeved on the outside of the telescopic rod, a sealing gasket is provided at the bottom of the pressure ring, and the sealing gasket is sleeved on the outside of the telescopic rod;

[0009] Preferably, a collision plate is provided on the middle movable card of the sealing shell, and an anti-collision component is provided inside the collision plate;

[0010] Preferably, the anti-collision assembly includes an inner rod, which is fixedly mounted on the inner side of the impact plate, a sleeve rod movably sleeved on the inner rod, a second spring is arranged outside the sleeve rod, a mounting plate is fixedly connected to the bottom of the sleeve rod, a rubber pad is fixedly mounted on the outer side of the mounting plate, a first rotating rod is rotatably connected to the inner side of the mounting plate, the first rotating rod is rotatably connected to a connecting head, the connecting head is rotatably connected to a second rotating rod, the second rotating rod is rotatably connected to the inner side of the impact plate, and a third spring is mounted on the connecting head.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The elastic force applied to the pressure ring by the first spring can ensure that the pressure ring can fit tightly to the connection between the cylinder body and the telescopic rod, and the connection between the cylinder body and the telescopic rod is sealed by the sealing gasket. In addition, the sealing of the connection between the cylinder body and the telescopic rod is further strengthened by the design of the first sealing ring and the second sealing ring. Compared with the traditional hydraulic cylinder, the utility model greatly increases its sealing effect.

[0013] 2. Through the design of the anti-collision component, a certain anti-collision ability is added to the utility model. Compared with the traditional hydraulic cylinder, the utility model can protect the connection between the cylinder body and the telescopic rod to a certain extent, avoiding the influence of external forces, resulting in pressure release caused by the tilt of the telescopic rod, etc., thereby increasing practical safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic side cross-sectional view of the structure of the utility model;

[0015] Figure 2 It is a schematic side cross-sectional view of the structure of the anti-collision component in the utility model;

[0016] Figure 3 It is a side view schematic diagram of the utility model;

[0017] Figure 4 It is a top view schematic diagram of the utility model.

[0018] In the figure: 1. cylinder body; 2. telescopic rod; 3. sealing shell; 4. first sealing ring; 5. bolt; 6. second sealing ring; 7. first spring; 8. pressure ring; 9. sealing gasket; 10. impact plate; 11. anti-collision assembly; 111. inner rod; 112. sleeve rod; 113. second spring; 114. mounting plate; 115. rubber pad; 116. first rotating rod; 117. connecting head; 118. second rotating rod; 119. third spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0020] See also Figure 1-4 , an embodiment provided by the utility model:

[0021] A sealing mechanism of a hydraulic cylinder comprises: a cylinder body 1, a telescopic rod 2 is arranged at one end of the cylinder body 1, a sealing shell 3 is arranged outside the cylinder body 1; and an anti-collision component 11 is installed in the sealing shell 3.

[0022] Furthermore, a first sealing ring 4 is provided on the inner side of the bottom end of the sealing housing 3, and the first sealing ring 4 is fixed to the cylinder body 1 by a bolt 5, and the bolt 5 is threadedly installed on the outer side of the bottom end of the sealing housing 3, and a second sealing ring 6 is provided on the inner side of the top end of the sealing housing 3, and the second sealing ring 6 is clamped on the outside of the telescopic rod 2 through the sealing housing 3. The design of the first sealing ring 4 and the second sealing ring 6 strengthens the sealing of the connection between the cylinder body 1 and the telescopic rod 2;

[0023] Furthermore, a first spring 7 is provided at the top of the sealing housing 3, a pressure ring 8 is provided below the first spring 7, the pressure ring 8 is sleeved on the outside of the telescopic rod 2, a sealing gasket 9 is provided at the bottom of the pressure ring 8, and the sealing gasket 9 is sleeved on the outside of the telescopic rod 2. The elastic force applied by the first spring 7 to the pressure ring 8 can ensure that the pressure ring 8 can be tightly attached to the connection between the cylinder body 1 and the telescopic rod 2, and the connection between the cylinder body 1 and the telescopic rod 2 is sealed by the sealing gasket 9;

[0024] Further, a collision plate 10 is movably provided in the middle of the sealing shell 3, and an anti-collision component 11 is provided inside the collision plate 10. The anti-collision component 11 includes an inner rod 111, and the inner rod 111 is fixedly installed on the inner side of the collision plate 10. A sleeve rod 112 is movably sleeved on the inner rod 111, and a second spring 113 is provided outside the sleeve rod 112. A mounting plate 114 is fixedly connected to the bottom of the sleeve rod 112, and a rubber pad 115 is fixedly installed on the outer side of the mounting plate 114. The inner side of the mounting plate 114 is rotatably connected to a first rotating rod 116, and the first rotating rod 116 rotates A connecting head 117 is connected, and the connecting head 117 is rotatably connected to a second rotating rod 118. The second rotating rod 118 is rotatably connected to the inner side of the impact plate 10, and a third spring 119 is installed on the connecting head 117. Through the design of the anti-collision component 11, a certain anti-collision ability is added to the utility model. Compared with the traditional hydraulic cylinder, the utility model can protect the connection between the cylinder body 1 and the telescopic rod 2 to a certain extent, avoid being affected by external forces, and avoid the pressure release caused by the tilt of the telescopic rod 2, thereby increasing the practical safety.

[0025] Working principle: the utility model can be slowly slid to the connection between the cylinder body 1 and the telescopic rod 2 through the top of the telescopic rod 2, and the fixation and sealing of the utility model can be achieved by fixing the bolt 5. In actual use, the anti-collision component 11 can be subjected to force through the collision plate 10, compressing the second spring 113 and the third spring 119, and at the same time making the inner rod 111 slide in the sleeve rod 112, so as to rotate the first rotating rod 116 and the second rotating rod 118, thereby weakening the impact force, and at the same time the second spring 113 and the third spring 119 will restore their position through their own elastic force.

[0026] It is obvious 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 features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A sealing mechanism for a hydraulic cylinder, characterized in that: include: A cylinder body (1), wherein a telescopic rod (2) is disposed at one end of the cylinder body (1), and a sealed shell (3) is disposed outside the cylinder body (1); An anti-collision component (11), wherein the anti-collision component (11) is installed in the sealed housing (3).

2. The sealing mechanism of a hydraulic cylinder according to claim 1, characterized in that: A first sealing ring (4) is arranged on the inner side of the bottom end of the sealing housing (3); the first sealing ring (4) is fixed to the cylinder body (1) via bolts (5); and the bolts (5) are threadedly mounted on the outer side of the bottom end of the sealing housing (3).

3. The sealing mechanism of a hydraulic cylinder according to claim 1, characterized in that: A second sealing ring (6) is provided on the inner side of the top end of the sealing shell (3), and the second sealing ring (6) is clamped on the outside of the telescopic rod (2) through the sealing shell (3).

4. The sealing mechanism of a hydraulic cylinder according to claim 1, characterized in that: A first spring (7) is arranged at the top of the sealing shell (3), a pressure ring (8) is arranged below the first spring (7), the pressure ring (8) is sleeved on the outside of the telescopic rod (2), and a sealing gasket (9) is arranged at the bottom of the pressure ring (8), the sealing gasket (9) is sleeved on the outside of the telescopic rod (2).

5. The sealing mechanism of a hydraulic cylinder according to claim 1, characterized in that: A collision plate (10) is provided at the middle movable clamp of the sealing shell (3), and an anti-collision component (11) is provided inside the collision plate (10).

6. The sealing mechanism of a hydraulic cylinder according to claim 5, characterized in that: The anti-collision component (11) comprises an inner rod (111), wherein the inner rod (111) is fixedly mounted on the inner side of the impact plate (10), a sleeve rod (112) is movably sleeved on the inner rod (111), a second spring (113) is arranged outside the sleeve rod (112), a mounting plate (114) is fixedly connected to the bottom of the sleeve rod (112), a rubber pad (115) is fixedly mounted on the outer side of the mounting plate (114), a first rotating rod (116) is rotatably connected to the inner side of the mounting plate (114), the first rotating rod (116) is rotatably connected to a connecting head (117), the connecting head (117) is rotatably connected to a second rotating rod (118), the second rotating rod (118) is rotatably connected to the inner side of the impact plate (10), and a third spring (119) is mounted on the connecting head (117).

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