Corrosion-free swing type hydraulic execution oil cylinder of integrated self-lubricating structure

Abstract

The invention relates to the technical field of hydraulic oil cylinders, and discloses a corrosion-free swing type hydraulic execution oil cylinder integrated with a self-lubricating structure, the corrosion-free swing type hydraulic execution oil cylinder comprises a base and an oil cylinder body arranged at the upper end of the base, and further comprises an operation unit arranged in the oil cylinder body, and the operation unit comprises a swing part and a self-lubricating part which are arranged in the oil cylinder body; the swing component comprises a baffle arranged in the oil cylinder body and an output shaft rod arranged at the axis position in the oil cylinder body. The self-lubricating component is arranged in the blade plate, when the blade plate moves in the oil cylinder body, the first sealing plate and the second sealing plate alternately seal the blade plate, the other sealing plate is lubricated through hydraulic oil in the oil cylinder body, and it is guaranteed that in the working process of the blade, the self-lubricating component can be lubricated by the first sealing plate and the second sealing plate; and enough lubricating oil is arranged on the first sealing plate or the second sealing plate which is in contact with the oil cylinder body for sealing and lubricating.

Description

Technical Field

[0001] This invention relates to the technical field of hydraulic cylinders, and more particularly to a corrosion-free swing-type hydraulic actuator cylinder with an integrated self-lubricating structure. Background Technology

[0002] A swing-type hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into rotational mechanical energy. Its core feature is that it outputs a finite-angle swing motion (rather than linear motion). It is widely used in industrial scenarios that require reciprocating swing motion. The swing-type hydraulic cylinder drives the internal moving parts to move through the pressure difference of hydraulic oil, converting the linear thrust / pull force of the hydraulic system into a fixed-angle rotational torque, thereby realizing the reciprocating swing of the output shaft. Its working principle is as follows: the hydraulic system inputs high-pressure oil into one port of the cylinder, pushing the internal moving parts to produce displacement. The moving parts drive the output shaft to swing through the mechanical structure, and the low-pressure oil in the other port is discharged, completing one swing stroke. When high-pressure oil is input in the opposite direction, the output shaft swings in the opposite direction to achieve reciprocating motion.

[0003] During operation, the blades or pistons of a swing-type hydraulic cylinder typically require regular lubrication and sealing with hydraulic oil to reduce friction, extend the service life of the blades and cylinder, and lower maintenance costs. The current manual application of hydraulic oil is cumbersome and requires disassembly of the cylinder. Improper operation may affect the sealing between the cylinder and the outside environment. Therefore, it is necessary to design a cylinder that can automatically apply hydraulic oil to the contact surfaces between the blades and the cylinder. Summary of the Invention

[0004] In view of the problems of the existing technology, such as the complexity of manually applying hydraulic oil and the potential impact on the internal sealing of the cylinder, a non-corrosion swing hydraulic actuator cylinder with an integrated self-lubricating structure is proposed.

[0005] This application provides a corrosion-free swing hydraulic actuator with an integrated self-lubricating structure. The purpose is to: by setting a self-lubricating component inside the blade plate, when the blade plate moves inside the cylinder body, the first sealing plate and the second sealing plate alternately seal the blade plate, while the other is lubricated by the hydraulic oil inside the cylinder body itself, ensuring that the first sealing plate or the second sealing plate that contacts the cylinder body has sufficient lubricating oil for sealing and lubrication during the blade's operation.

[0006] The technical solution of the present invention is as follows: a corrosion-free swing hydraulic actuator with integrated self-lubricating structure, including a base, a cylinder body disposed on the upper end of the base, and an operating unit disposed inside the cylinder body, the operating unit including a swing component and a self-lubricating component disposed inside the cylinder body; The rocking component includes a baffle disposed inside the cylinder body, an output shaft disposed at the center of the cylinder body, a blade plate disposed on the outer wall of the output shaft, a first sealing plate and a second sealing plate slidably installed inside the blade plate; The self-lubricating component includes an installation groove inside the blade plate, connecting plates respectively disposed at one end of the first sealing plate and the second sealing plate, a return spring respectively disposed between the inner wall of the installation groove and the side wall of the corresponding connecting plate, an inflation groove inside the blade plate, an inflation component installed inside the inflation groove, and triggering components installed on both sides of the blade plate.

[0007] Furthermore, the inflation assembly includes an airbag disposed in the inflation groove and a sealing rod slidably disposed inside the blade plate, one end of the sealing rod being tightly fitted with the corresponding connecting plate.

[0008] Furthermore, the triggering component includes a through groove formed in the blade plate, a sliding rod slidably disposed in the through groove, a first pressure plate and a second pressure plate disposed at the upper and lower ends of the sliding rod, two extrusion plates disposed on the side wall of the sliding rod, and two airbags respectively located between the corresponding extrusion plates and the inner wall of the inflation groove.

[0009] Furthermore, a connecting tube is fixedly installed between the two airbags, and the two airbags are connected to each other through the connecting tube.

[0010] Furthermore, the baffle and the blade plate work together to divide the internal area of ​​the cylinder body into an upper area and a lower area.

[0011] Furthermore, an upper pressure port and a lower pressure port are provided on the outer wall of the cylinder body, with the upper pressure port located in the upper region and the lower pressure port located in the lower region.

[0012] Furthermore, an output cavity is provided on the side wall of the cylinder body, and one end of the output shaft coincides with the output cavity.

[0013] The beneficial effects of this invention are: 1. By setting up self-lubricating components, when the blade plate moves inside the cylinder, while ensuring that the first sealing plate and the second sealing plate alternately seal the blade plate, hydraulic oil can be applied to the surface of the other sealing plate, ensuring that there is sufficient lubricating oil on the sealing plate that is in contact with the cylinder during the movement of the blade plate.

[0014] 2. By setting up self-lubricating components, during the operation of the blade plate, the pressure difference between the upper and lower regions enables the alternating use of the first and second sealing plates, without the need for an additional power source, effectively reducing usage and maintenance costs. Attached Figure Description

[0015] Figure 1 This is a first-view three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the cylinder body of the present invention; Figure 3 This is a schematic diagram of the planar structure of the self-lubricating component of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the diagram; Figure 5 This is a schematic diagram of the trigger component structure of the present invention.

[0016] In the picture: 1. Base; 2. Cylinder body; 101. Baffle; 102. Output shaft; 103. Blade plate; 104. First sealing plate; 105. Second sealing plate; 201. Mounting groove; 202. Connecting plate; 203. Return spring; 301. Airbag; 302. Sealing rod; 401. Sliding rod; 402. First pressure plate; 403. Second pressure plate; 404. Extrusion plate; 405. Connecting pipe; 501. Upper region; 502. Lower region; 503. Upper pressure port; 504. Lower pressure port; 505. Output chamber. Detailed Implementation

[0017] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0018] Example 1, referring to Figures 1-5 The first embodiment of the present invention provides a corrosion-free swing hydraulic actuator with an integrated self-lubricating structure, including a base 1, a cylinder body 2 fixedly installed on the upper end of the base 1, and an operating unit installed inside the cylinder body 2. The operating unit includes a swing component and a self-lubricating component installed inside the cylinder body 2.

[0019] The rocking component includes a baffle 101 fixedly installed inside the cylinder body 2, an output shaft 102 rotatably installed at the shaft center inside the cylinder body 2, a blade plate 103 fixedly installed on the outer wall of the output shaft 102, a first sealing plate 104 and a second sealing plate 105 slidably installed inside the blade plate 103.

[0020] The self-lubricating components include a mounting groove 201 formed inside the blade plate 103, connecting plates 202 respectively fixedly installed at one end of the first sealing plate 104 and the second sealing plate 105, a return spring 203 respectively fixedly installed between the inner wall of the mounting groove 201 and the side wall of the corresponding connecting plate 202, an inflation groove formed inside the blade plate 103, an inflation assembly installed inside the inflation groove, and triggering assemblies installed on both sides of the blade plate 103. The inflation assembly includes an airbag 301 fixedly installed in the inflation groove and a sealing rod 302 slidably installed inside the blade plate 103, one end of the sealing rod 302 being tightly fitted with the corresponding connecting plate 202.

[0021] Specifically, the swing component is existing technology. By injecting hydraulic oil in different directions, the blade plate 103 on the output shaft 102 deflects under pressure. During the deflection process, the output shaft 102 moves synchronously, and the output shaft 102 transmits mechanical energy to the output end, thereby realizing the operation of the hydraulic cylinder. In the existing technology, during the rotation of the blade plate 103 on the inner wall of the hydraulic cylinder body 2, the end of the blade plate 103 in contact with the inner wall of the hydraulic cylinder body 2 is in continuous contact with the inner wall of the hydraulic cylinder body 2. In order to ensure the service life and cost of the hydraulic cylinder, it is necessary to lubricate one end of the blade plate 103 regularly. Currently, manual lubrication is used, which is complicated and the frequent disassembly of the hydraulic cylinder will affect the sealing with the outside world. Therefore, a self-lubricating component is designed. By the different pressure differences experienced by the blade plate 103, the self-lubricating component can intermittently lubricate the side of the blade plate 103 in contact with the inner wall of the hydraulic cylinder body 2.

[0022] This invention seals the gap between the cylinder body 2 and the vane plate 103 by designing a first sealing plate 104 and a second sealing plate 105. Therefore, in this invention, the first sealing plate 104 and the second sealing plate 105 are actually in contact with the cylinder body 2. The working principle of the self-lubricating component is as follows: during the deflection of the vane plate 103, the pressure difference on both sides is different. That is, when the pressure at the first sealing plate 104 is lower, while the first sealing plate 104 is sealing, one end of the second sealing plate 105 is in direct contact with the hydraulic oil inside the cylinder body 2. The hydraulic oil acts evenly on one end of the second sealing plate 105, enabling it to lubricate and seal. When the pressure at the second sealing plate 105 is lower, the second sealing plate 105 seals the space between the vane plate 103 and the inner wall of the cylinder body 2, while lubricating and sealing the area of ​​the first sealing plate 104. For a detailed description of the working principle, refer to the trigger assembly.

[0023] Reference Figure 4 and Figure 5The triggering assembly includes a through slot formed in the blade plate 103, a sliding rod 401 slidably installed in the through slot, a first pressure plate 402 and a second pressure plate 403 fixedly installed at the upper and lower ends of the sliding rod 401, two extrusion plates 404 fixedly installed on the side wall of the sliding rod 401, and two airbags 301 respectively located between the corresponding extrusion plates 404 and the inner wall of the inflation slot. A connecting pipe 405 is fixedly installed between the two airbags 301, and the two airbags 301 are interconnected through the connecting pipe 405. The baffle 101 and the blade plate 103 cooperate with each other to divide the internal area of ​​the cylinder body 2 into an upper area 501 and a lower area 502.

[0024] Specifically, the triggering component is a key component used to control whether the first sealing plate 104 and the second sealing plate 105 are sealed or lubricated. When the blade plate 103 rotates clockwise (refer to...), it triggers the first sealing plate 104. Figure 3 During operation, when the pressure on the blade plate 103 from above is greater than the pressure received from below, the blade plate 103 moves clockwise while the first pressure plate 402 moves downward under pressure, thereby driving the corresponding extrusion plate 404 to move synchronously. At this time, the extrusion plate 404 extrudes the upper air bladder 301, while the lower air bladder 301 is not extruded. The gas inside the upper air bladder 301 is discharged into the lower air bladder 301 through the connecting pipe 405. The lower air bladder 301 expands and extrudes the second sealing plate 105, causing the second sealing plate 105 to adhere tightly to the inner wall of the cylinder body 2. At the same time, the first sealing plate 104 does not adhere tightly to the inner wall of the cylinder body 2. At this time, the hydraulic oil inside can fully contact the first sealing plate 104 and lubricate and seal it. Conversely, when the blade plate 103 moves counterclockwise (refer to...), the pressure on the blade plate 103 decreases. Figure 3 When rotating, the first sealing plate 104 is tightly attached to the inner wall of the cylinder body 2, while the second sealing plate 105 comes into contact with the hydraulic oil for lubrication. No manual intervention is required throughout the process. During the operation of the cylinder, lubrication and sealing can be achieved between the blade plate 103 and the inner wall of the cylinder body 2.

[0025] Example 2, refer to Figures 1-3 This is the second embodiment of the present invention, which differs from the first embodiment in that: an upper pressure port 503 and a lower pressure port 504 are provided on the outer wall of the cylinder body 2, with the upper pressure port 503 located in the upper region 501 and the lower pressure port 504 located in the lower region 502. An output cavity 505 is provided on the side wall of the cylinder body 2, and one end of the output shaft 102 coincides with the output cavity 505.

[0026] Specifically, the upper region 501 and the lower region 502 are existing technologies. The operator alternately injects hydraulic oil through the upper pressure port 503 and the lower pressure port 504. When hydraulic oil is injected through the upper pressure port 503, the pressure in the upper region 501 is greater. At this time, the pressure on the first pressure plate 402 is greater than that on the second pressure plate 403. Therefore, the first pressure plate 402 drives the extrusion plate 404 to extrude the airbag 301 located above. Conversely, when hydraulic oil is injected through the lower pressure port 504, the airbag 301 located below is extruded, which triggers the self-lubricating component through the triggering component to lubricate and seal the first sealing plate 104 or the second sealing plate 105.

[0027] By alternately injecting hydraulic oil, the blade plate 103 reciprocates under pressure, thereby driving the output shaft 102 to rotate synchronously. At the same time, the shaft that needs to perform mechanical motion is installed in the output cavity 505, so that the movement of the output shaft 102 can drive the shaft to move synchronously, thus realizing the transmission of mechanical motion (this is existing technology and will not be elaborated on here).

[0028] The remaining structure is the same as that in Example 1.

[0029] Based on embodiments 1-2, the working principle of the present invention is as follows: When the oil cylinder is working, the operator injects hydraulic oil through the alternating upward pressure port 503 and downward pressure port 504, which drives the blade plate 103 to reciprocate.

[0030] When the upper pressure port 503 injects hydraulic oil into the upper region 501 inside the cylinder body 2, the pressure on the upper part of the vane plate 103 is greater than the pressure on the lower part. At this time, the vane plate 103 moves clockwise (refer to...). Figure 3 During the movement of the blade plate 103, the pressure on the upper first pressure plate 402 is greater than that on the second pressure plate 403. Therefore, the first pressure plate 402 moves downward under the pressure and drives the sliding rod 401 to move synchronously. During the movement of the sliding rod 401, the extrusion plate 404 on the side wall pressurizes the upper airbag 301, squeezing the gas in the upper airbag 301 to the lower airbag 301. The lower airbag 301 expands and squeezes the second sealing plate 105 through the sealing rod 302, so that the second sealing plate 105 is tightly attached to the inner wall of the cylinder body 2 during the extrusion process, thereby playing a sealing role. Meanwhile, a gap is formed between the first sealing plate 104 and the inner wall of the cylinder body 2. The hydraulic oil inside the first sealing plate 104 comes into contact with one end of the first sealing plate 104 and lubricates one end of the first sealing plate 104, preparing for the subsequent sealing by the first sealing plate 104.

[0031] When the blade plate 103 rotates clockwise by a certain angle, the lower pressure port 504 injects hydraulic oil into the lower region 502. At this time, the pressure in the lower region 502 is greater than the pressure in the upper region 501, and the blade plate 103 rotates counterclockwise (refer to...). Figure 3 Then, the second pressure plate 403 moves upward under pressure, and the extrusion plate 404 below the sliding rod 401 extrudes the lower airbag 301, forcing the gas in the lower airbag 301 into the upper airbag 301. The upper airbag 301 expands and exerts pressure on the first sealing plate 104 through the sealing rod 302, so that the first sealing plate 104 seals, while the second sealing plate 105 lubricates. The two work alternately to lubricate each other, ensuring that the blade plate 103 has enough hydraulic oil for lubrication when it rotates.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A corrosion-free swing-type hydraulic actuator with an integrated self-lubricating structure, comprising a base (1) and a cylinder body (2) disposed on the upper end of the base (1), characterized in that, It also includes an operating unit disposed inside the cylinder body (2), the operating unit including a rocking component and a self-lubricating component disposed inside the cylinder body (2); The rocking component includes a baffle (101) disposed inside the cylinder body (2), an output shaft (102) disposed at the center of the cylinder body (2), a blade plate (103) disposed on the outer wall of the output shaft (102), a first sealing plate (104) slidably mounted inside the blade plate (103), and a second sealing plate (105). The self-lubricating component includes an installation groove (201) inside the blade plate (103), a connecting plate (202) respectively disposed at one end of the first sealing plate (104) and the second sealing plate (105), a reset spring (203) respectively disposed between the inner wall of the installation groove (201) and the side wall of the corresponding connecting plate (202), an inflation groove inside the blade plate (103), an inflation component installed inside the inflation groove, and trigger components installed on both sides of the blade plate (103).

2. The corrosion-free swing-type hydraulic actuator with integrated self-lubricating structure according to claim 1, characterized in that, The inflation assembly includes an airbag (301) disposed in an inflation groove and a sealing rod (302) slidably disposed inside a blade plate (103), one end of which is tightly fitted to a corresponding connecting plate (202).

3. The corrosion-free swing-type hydraulic actuator with an integrated self-lubricating structure according to claim 2, characterized in that, The triggering component includes a through groove formed in the blade plate (103), a sliding rod (401) slidably disposed in the through groove, a first pressure plate (402) and a second pressure plate (403) disposed at the upper and lower ends of the sliding rod (401), and two extrusion plates (404) disposed on the side wall of the sliding rod (401). The two airbags (301) are respectively located between the corresponding extrusion plates (404) and the inner wall of the inflation groove.

4. The corrosion-free swing-type hydraulic actuator with integrated self-lubricating structure according to claim 3, characterized in that, A connecting tube (405) is fixedly installed between the two airbags (301), and the two airbags (301) are connected to each other through the connecting tube (405).

5. The corrosion-free swing-type hydraulic actuator with integrated self-lubricating structure according to claim 1, characterized in that, The baffle (101) and the blade (103) work together to divide the internal area of ​​the cylinder body (2) into an upper region (501) and a lower region (502).

6. A corrosion-free swing-type hydraulic actuator with an integrated self-lubricating structure according to claim 5, characterized in that, The cylinder body (2) has an upper pressure port (503) and a lower pressure port (504) on its outer wall. The upper pressure port (503) is located in the upper region (501), and the lower pressure port (504) is located in the lower region (502).

7. The corrosion-free swing-type hydraulic actuator with integrated self-lubricating structure according to claim 1, characterized in that, The cylinder body (2) has an output cavity (505) on its side wall, and one end of the output shaft (102) coincides with the output cavity (505).

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