Lubricated hydraulic cylinder

Abstract

This utility model relates to the field of hydraulic cylinder technology and discloses a lubricated hydraulic cylinder, including a cylinder barrel. A slide rod is installed inside the cylinder barrel, and an annular plate is installed at the outer end of the slide rod. The slide rod has several oil storage chambers inside, and each oil storage chamber has an oil outlet chamber at intervals on its side end. Each oil outlet chamber has an oil outlet port on its side end, and a passage is provided between each oil storage chamber and each oil outlet chamber. The top of the annular plate is provided with several spring-loaded mechanisms, and a top plate is provided between the top ends of each spring-loaded mechanism. Several vertical plates are fixedly connected to the bottom end of the top plate, and each vertical plate has an oil-blocking mechanism on its side end. Through the setting of the spring-loaded mechanism and the oil-blocking mechanism, this utility model enables the slide rod to automatically lubricate the inside of the hydraulic cylinder and the outer end of the slide rod, so that the slide rod has multiple lubrication methods and can achieve good lubrication effect, avoiding affecting the working efficiency of the slide rod.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, specifically to a lubricated hydraulic cylinder. Background Technology

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or oscillating motion). It has a simple structure and reliable operation. When used to achieve reciprocating motion, it eliminates the need for a speed reduction device and has no transmission backlash, resulting in smooth movement. Therefore, it is widely used in the hydraulic systems of various machines.

[0003] In the operation of existing hydraulic cylinders, the piston rod, as a moving part, undergoes frequent movement, thus requiring a certain degree of lubrication on its surface. However, the existing lubrication methods for piston rods are too simplistic and cannot achieve good lubrication results, thereby affecting the working efficiency of the piston rod. Therefore, a lubricated hydraulic cylinder is needed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a lubricated hydraulic cylinder, which solves the problem that in the existing hydraulic cylinder, the piston slide rod, as a moving part, has frequent movement and therefore requires a certain degree of lubrication on its surface. The existing lubrication treatment methods for piston slide rods are too simple and cannot achieve good lubrication effect, thus affecting the working efficiency of the piston slide rod.

[0005] This utility model provides the following technical solution: a lubricated hydraulic cylinder, including a cylinder barrel, a slide rod installed inside the cylinder barrel, an annular plate installed at the outer end of the slide rod, a plurality of oil storage chambers opened inside the slide rod, each oil storage chamber containing lubricating oil, an oil outlet chamber spaced apart at the side end of each oil storage chamber, an oil outlet port opened at the side end of each oil outlet chamber, and a passage opening between each oil storage chamber and each oil outlet chamber, a plurality of spring-loaded mechanisms provided at the top end of the annular plate, a top plate provided between the top ends of each spring-loaded mechanism, a plurality of vertical plates fixedly connected to the bottom end of the top plate, and an oil-blocking mechanism provided at the side end of each vertical plate.

[0006] As a preferred embodiment of the above technical solution, the rebound mechanism includes a hollow rod, which is fixedly connected to the top of the ring plate. A spring is fixedly connected to the bottom of the hollow rod, and a circular plate is fixedly connected to the top of the spring. A circular rod is fixedly connected to the top of the circular plate, and the top of the circular rod is fixedly connected to the bottom of the top plate.

[0007] As a preferred embodiment of the above technical solution, the top plate is arranged in a ring shape.

[0008] As a preferred embodiment of the above technical solution, the oil-blocking mechanism includes a hollow rod II, which is fixedly connected to the side end of the vertical plate. A spring II is fixedly connected to the inner side end of the hollow rod II. A circular plate II is fixedly connected to the side end of the spring II. A circular rod II is fixedly connected to the side end of the circular plate II. A plug is fixedly connected to the side end of the circular rod II.

[0009] As a preferred embodiment of the above technical solution, the plug body is spherical in shape and is adapted to the oil outlet.

[0010] As a preferred embodiment of the above technical solution, an oil inlet is provided at the side end of the slide bar near each oil storage chamber.

[0011] As a preferred embodiment of the above technical solution, a filter screen is installed on the inner side of each of the openings.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention utilizes a rebound mechanism and an oil-blocking mechanism. When the hydraulic cylinder is started, the sliding rod inside the cylinder moves upward, and the ring plate also moves upward with the sliding rod. When the top plate contacts the top of the cylinder, the sliding rod and ring plate continue to move upward, causing the hollow rod to move upward as well and cooperate with the circular plate to compress the spring. Since the plug is spherical, the inner wall of the oil outlet pushes against the plug and disengages from the oil outlet after the sliding rod continues to move upward. At this point, the plug is located on the side of the sliding rod and, together with the circular rod and circular plate, presses against the spring, thus opening the oil outlet. The lubricating oil in the storage chamber is filtered through a filter screen to remove impurities and enters the oil outlet chamber before exiting through the outlet. This allows the sliding rod to automatically lubricate the inside of the hydraulic cylinder and the outer end of the sliding rod, providing a multi-faceted lubrication solution and achieving good lubrication results, thus avoiding any impact on the working efficiency of the sliding rod.

[0014] When the slide rod moves downwards into the cylinder, and the top plate no longer contacts the top of the cylinder, spring one pushes against round plate one and round rod one to rebound, causing the top plate to move the plug. When the plug passes the oil outlet position, spring two pushes against round plate two and round rod two to rebound, causing the plug to be inserted into the oil outlet, thus blocking the oil outlet. This achieves intermittent circulating oil supply, which can lubricate the hydraulic cylinder and slide rod without over-supplying oil. Attached Figure Description

[0015] Figure 1 This is a cross-sectional three-dimensional structural diagram of a lubricated hydraulic cylinder;

[0016] Figure 2 This is a front view schematic diagram of a lubricated hydraulic cylinder;

[0017] Figure 3 for Figure 1 A magnified schematic diagram of the structure of part A in the diagram;

[0018] Figure 4 for Figure 1 A magnified schematic diagram of part B.

[0019] In the diagram: 1. Cylinder; 2. Sliding rod; 201. Ring plate; 202. Oil storage chamber; 2021. Oil inlet; 203. Oil outlet; 204. Filter screen; 205. Oil outlet; 3. Hollow rod one; 301. Spring one; 302. Circular plate one; 303. Circular rod one; 304. Top plate; 305. Vertical plate; 4. Hollow rod two; 401. Spring two; 402. Circular plate two; 403. Circular rod two; 404. Plug. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] like Figure 1-4As shown, this utility model provides a technical solution: a lubricated hydraulic cylinder, including a cylinder barrel 1, a slide rod 2 installed inside the cylinder barrel 1, a ring plate 201 installed at the outer end of the slide rod 2, a plurality of oil storage chambers 202 opened inside the slide rod 2, each oil storage chamber 202 containing lubricating oil, an oil inlet 2021 provided at the side end of the slide rod 2 near each oil storage chamber 202, the oil inlet 2021 being used to replenish lubricating oil, an oil outlet chamber 203 spaced apart at the side end of each oil storage chamber 202, an oil outlet 205 opened at the side end of each oil outlet chamber 203, the oil outlet chamber 203 cooperating with the oil outlet 205 for lubricating oil discharge, a passage opening opened between each oil storage chamber 202 and each oil outlet chamber 203, a filter screen 204 installed inside each passage opening, when the lubricating oil in the oil storage chamber 202 passes through the filter screen 204, impurities can be filtered out, and then it enters the oil outlet chamber 203 for discharge, avoiding Impurities mixed with lubricating oil can enter the hydraulic cylinder and cause damage. The top of the ring plate 201 is provided with several rebound mechanisms, and a top plate 304 is provided between the tops of each rebound mechanism. Several vertical plates 305 are fixedly connected to the bottom of the top plate 304. Each vertical plate 305 is provided with an oil-blocking mechanism on its side. The above structure constitutes a lubricated hydraulic cylinder. In practice, when the hydraulic cylinder is started, the slide rod 2 inside the control cylinder 1 moves upward. At this time, the ring plate 201 also moves upward with the slide rod 2. When the top plate 304 contacts the top of the inside of the cylinder 1, due to the continuous upward movement of the slide rod 2 and the ring plate 201, the oil-blocking mechanism will disengage from the oil outlet 205, so that the lubricating oil can be discharged from the oil outlet 205. This allows the slide rod 2 to automatically lubricate the inside of the hydraulic cylinder and the outside of the slide rod 2, so that the lubrication treatment of the slide rod 2 is not singular, and a good lubrication effect can be achieved, avoiding affecting the working efficiency of the slide rod 2.

[0022] As one implementation method in this embodiment, such as Figure 1 and Figure 3As shown, the rebound mechanism includes a hollow rod 3, which is fixedly connected to the top of the ring plate 201. A spring 301 is fixedly connected to the bottom of the hollow rod 3. A circular plate 302 is fixedly connected to the top of the spring 301. A circular rod 303 is fixedly connected to the top of the circular plate 302. The top of the circular rod 303 is fixedly connected to the bottom of the top plate 304. The top plate 304 is annular in shape, allowing it to easily fit over the outer end of the slide rod 2 and press against the top of the cylinder 1. In practice, when the top plate 304 contacts the top of the cylinder 1, the slide rod 2 and the ring plate 201 continuously move upwards, causing the hollow rod 3 to move upwards as well. Furthermore, in conjunction with the circular plate 302, the compression spring 301 is compressed. At this time, since the plug 404 is spherically shaped, as the slide rod 2 continues to move upward, the inner wall of the oil outlet 205 will push against the plug 404 and disengage from the oil outlet 205. At this time, the plug 404 will be located at the side end of the slide rod 2 and, together with the circular rod 403 and the circular plate 402, will press against the spring 401, thereby opening the oil outlet 205 and facilitating oil discharge. This allows the slide rod 2 to automatically lubricate the inside of the hydraulic cylinder and the outer end of the slide rod 2, making the lubrication treatment of the slide rod 2 not singular, achieving a good lubrication effect and avoiding affecting the working efficiency of the slide rod 2.

[0023] As one implementation method in this embodiment, such as Figure 1 and Figure 4 As shown, the oil-blocking mechanism includes a hollow rod 4, which is fixedly connected to the side end of the vertical plate 305. A spring 401 is fixedly connected to the inner side end of the hollow rod 4. A circular plate 402 is fixedly connected to the side end of the spring 401. A circular rod 403 is fixedly connected to the side end of the circular plate 402. A plug 404 is fixedly connected to the side end of the circular rod 403. The plug 404 is spherically shaped and is adapted to the oil outlet 205. In operation, when the sliding rod 2 moves downwards into the cylinder 1, the top plate 305... When the spring 301 stops contacting the top of the cylinder 1, it rebounds against the circular plate 302 and the circular rod 303, causing the top plate 304 to move the plug 404. When the plug 404 passes the oil outlet 205, the spring 401 will rebound against the circular plate 402 and the circular rod 403, causing the plug 404 to be inserted into the oil outlet 205, thus blocking the oil outlet 205. This achieves intermittent circulation oil supply, which can lubricate the hydraulic cylinder and slide rod 2 without over-supplying oil.

[0024] Working principle: When the hydraulic cylinder starts, the sliding rod 2 inside the control cylinder 1 moves upward. At this time, the ring plate 201 also moves upward with the sliding rod 2. When the top plate 304 contacts the top of the inside of the cylinder 1, due to the continuous upward movement of the sliding rod 2 and the ring plate 201, the hollow rod 3 will also move upward and cooperate with the circular plate 302 to compress the spring 301. Since the plug 404 is spherical, after the sliding rod 2 continues to move upward, the inner wall of the oil outlet 205 will push against the plug 404 and disengage from the oil outlet 205. The plug 404 is located on the side of the slide rod 2 and works with the second round rod 403 and the second round plate 402 to press against the second spring 401, thereby opening the oil outlet 205. At this time, the lubricating oil in the oil storage chamber 202 is filtered of impurities by the filter screen 204 and enters the oil outlet chamber 203, and then exits from the oil outlet 205. This allows the slide rod 2 to automatically lubricate the inside of the hydraulic cylinder and the outside of the slide rod 2, so that the slide rod 2 has a multi-faceted lubrication process and can achieve a good lubrication effect, avoiding affecting the working efficiency of the slide rod 2.

[0025] When the slide rod 2 moves downwards into the cylinder 1, and the top plate 304 no longer contacts the top of the cylinder 1, the spring 301 pushes against the circular plate 302 and the circular rod 303 to rebound, causing the top plate 304 to move the plug 404. When the plug 404 passes the oil outlet 205, the spring 401 will push against the circular plate 402 and the circular rod 403 to rebound, causing the plug 404 to be inserted into the oil outlet 205, thus blocking the oil outlet 205. This achieves intermittent circulating oil supply, which can lubricate the hydraulic cylinder and the slide rod 2 without causing excessive oil supply.

[0026] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A lubricated hydraulic cylinder, comprising a cylinder barrel (1), wherein a slide rod (2) is installed inside the cylinder barrel (1), and a ring plate (201) is installed at the outer end of the slide rod (2), characterized in that: The slide bar (2) has several oil storage chambers (202) inside, each oil storage chamber (202) is filled with lubricating oil, each oil storage chamber (202) has an oil outlet chamber (203) spaced apart on its side, each oil outlet chamber (203) has an oil outlet (205) on its side, and each oil storage chamber (202) and each oil outlet chamber (203) has a passage. The top of the ring plate (201) is provided with several spring-loaded mechanisms, and a top plate (304) is provided between the tops of each spring-loaded mechanism. The bottom of the top plate (304) is fixedly connected with several vertical plates (305), and each vertical plate (305) has an oil-blocking mechanism on its side.

2. A lubricated hydraulic cylinder according to claim 1, characterized in that: The rebound mechanism includes a hollow rod (3), which is fixedly connected to the top of the ring plate (201). A spring (301) is fixedly connected to the bottom of the hollow rod (3). A circular plate (302) is fixedly connected to the top of the spring (301). A circular rod (303) is fixedly connected to the top of the circular plate (302). The top of the circular rod (303) is fixedly connected to the bottom of the top plate (304).

3. A lubricated hydraulic cylinder according to claim 2, characterized in that: The top plate (304) is ring-shaped.

4. A lubricated hydraulic cylinder according to claim 1, characterized in that: The oil-blocking mechanism includes a hollow rod (4), which is fixedly connected to the side end of the vertical plate (305). A spring (401) is fixedly connected to the inner side end of the hollow rod (4). A circular plate (402) is fixedly connected to the side end of the spring (401). A circular rod (403) is fixedly connected to the side end of the circular plate (402). A plug (404) is fixedly connected to the side end of the circular rod (403).

5. A lubricated hydraulic cylinder according to claim 4, characterized in that: The plug (404) is spherical in shape and is adapted to the oil outlet (205).

6. A lubricated hydraulic cylinder according to claim 1, characterized in that: An oil inlet (2021) is provided at the side end of the slide bar (2) near each oil storage chamber (202).

7. A lubricated hydraulic cylinder according to claim 1, characterized in that: A filter screen (204) is installed on the inside of each of the openings.

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