Hydraulic oil cylinder for controlling load

Abstract

The invention discloses a hydraulic oil cylinder for controlling load, and relates to the technical field of mechanical transmission, the hydraulic oil cylinder comprises a cylinder body, the outer wall of the cylinder body is fixedly connected with an inflator pump, the top surface of the inflator pump is fixedly connected with a control valve, the control valve is provided with an inflation end, the inflation end is fixedly connected with an air pipe, and the air pipe is fixedly connected with an air cylinder. A sealing ring is fixedly connected to the other end of the air pipe, an oil inlet pipe is fixedly connected to the outer wall of the cylinder body, and the oil inlet pipe is sleeved with the sealing ring; the control valve is started, the air pipe is opened, air is conveyed into the sealing ring through the air pipe, the position where leakage is prone to occurring is blocked through the sealing ring, due to the fact that the sealing ring is made of rubber and soft in texture, when the air pump inflates air into the sealing ring, after the sealing ring expands, gaps can be filled, oil leakage is avoided, and economic losses are reduced; the environment effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical transmission, in particular to a hydraulic cylinder for controlling a load. Background Art

[0002] With the continuous improvement of industrial automation, the manufacturing industry has an increasingly urgent need for accurate, efficient and reliable load control equipment. In automated production lines, various mechanical operations require precise control of the position, speed and force of the load to ensure the accuracy and stability of the production process. As an actuator that can convert hydraulic energy into mechanical energy, the hydraulic cylinder has become one of the key devices for load control in many industrial fields because of its advantages such as large output force, stable operation and stepless speed regulation.

[0003] When the oil cylinder transports oil to a hydraulic cylinder used to control the load, due to the influence of external factors such as temperature, the oil in the oil cylinder and the hydraulic cylinder used to control the load is prone to leakage at the sealing point of the transportation. The leaked hydraulic oil may penetrate into the soil, pollute the soil environment, and damage the microorganisms and vegetation in the soil. Moreover, the additives in the hydraulic oil may contain harmful substances, such as heavy metals and chemical pollutants, which will spread into the environment with the leakage, causing long-term pollution and economic losses.

[0004] Therefore, we designed a hydraulic cylinder for controlling the load to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a hydraulic cylinder for controlling a load to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides a hydraulic cylinder for controlling a load, comprising a cylinder body, an outer wall of the cylinder body is fixedly connected to an air pump, the top surface of the air pump is fixedly connected to a control valve, an inflation end is provided on the control valve, the inflation end is fixedly connected to an air pipe, the other end of the air pipe is fixedly connected to a sealing ring, an oil inlet pipe is fixedly connected to the outer wall of the cylinder body, and the sealing ring is sleeved on the oil inlet pipe.

[0007] Furthermore, an oil storage cylinder is provided outside the cylinder body, the oil storage cylinder is arranged on the ground, a feed pipe is fixedly connected to the outer wall of the oil storage cylinder, one end of the feed pipe is fixedly connected to a filter assembly, and the feed pipe is connected to the sealing ring through the filter assembly.

[0008] Furthermore, a connecting ring is provided on the cylinder body, and a connecting block is fixedly connected to the top surface of the connecting ring.

[0009] Furthermore, a piston rod is slidably connected in the cylinder body, one end of the piston rod is fixedly connected to the bottom surface of the connecting ring, and the other end of the piston rod is fixedly connected to a piston body, and the piston body slides in the cylinder body.

[0010] Furthermore, a sealing gasket is fixedly connected to the top surface of the cylinder body, and the sealing gasket abuts against the piston rod.

[0011] Furthermore, the filter assembly comprises a sealing ring, a threaded ring is arranged at one end of the sealing ring away from the cylinder body, a mounting ring is threadedly connected to the sealing ring, and a filter screen is fixedly connected to the inner wall of the mounting ring.

[0012] Furthermore, a buffer pad is fixedly connected to the inner top surface and the inner bottom surface of the cylinder body.

[0013] Furthermore, the sealing ring is made of rubber.

[0014] Compared with the prior art, the beneficial effects of the present invention are: starting the control valve, opening the air pipe, allowing the gas to be transported to the sealing ring through the air pipe, and blocking the places prone to leakage through the sealing ring. Since the sealing ring is made of rubber and has a soft texture, when the air pump inflates the sealing ring, the sealing ring expands and fills the gap, thereby avoiding oil leakage, reducing economic losses, and improving environmental effects.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the feed pipe is connected to the liquid inlet through a mounting ring, and a filter is fixedly connected inside the mounting ring, which can filter out some impurities in the oil storage cylinder to prevent impurities from entering the cylinder body and damaging the interior of the cylinder body. The mounting ring can be removed through the thread, and the internal filter can be cleaned and can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a partial structural schematic diagram of the present invention;

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0019] In the figure: 1. cylinder body; 2. connecting ring; 3. piston rod; 301. sealing gasket; 302. connecting block; 303. buffer pad; 4. oil storage cylinder; 5. feed pipe; 6. air pump; 7. control valve; 8. sealing ring; 801. threaded ring; 9. air pipe; 10. mounting ring; 11. filter screen; 12. piston body. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1 The present invention provides a technical solution: a hydraulic cylinder for controlling a load, comprising a cylinder body 1, an air pump 6 is fixedly connected to the outer wall of the cylinder body 1, a control valve 7 is fixedly connected to the top surface of the air pump 6, an air charging end is arranged on the control valve 7, an air charging end is fixedly connected to an air pipe 9, a sealing ring 8 is fixedly connected to the other end of the air pipe 9, an oil inlet pipe is fixedly connected to the outer wall of the cylinder body 1, the sealing ring 8 is sleeved on the oil inlet pipe, and the sealing ring 8 is made of rubber.

[0022] In specific implementation, when the hydraulic cylinder needs to perform a sealing operation, the air pump 6 starts working. The air pump 6 sucks in the outside air and compresses it to a certain pressure, and the compressed gas passes through the control valve 7 connected to the top surface of the air pump 6. The control valve 7 adjusts and controls the pressure and flow of the gas according to the preset parameters and requirements. The regulated gas is transmitted from the inflation end of the control valve 7 to the sealing ring 8 through the air pipe 9. After the gas enters the sealing ring 8, the sealing ring 8 expands. Since the sealing ring 8 is sleeved on the oil inlet pipe, the expanded sealing ring 8 is tightly squeezed in the gap between the oil inlet pipe and the outer wall of the cylinder body 1, thereby effectively preventing the hydraulic oil from leaking from the oil inlet pipe connection; through the combined design of the air pump 6, the air pipe 9 and the inflatable sealing ring 8, the dynamic sealing of the oil inlet pipe connection can be achieved. Compared with the traditional static sealing method, this inflatable seal can adjust the expansion degree of the sealing ring 8 in real time according to the actual working conditions and pressure changes, so as to better adapt to different working conditions, provide a more reliable sealing effect, effectively reduce the risk of hydraulic oil leakage, and improve the working efficiency and stability of the hydraulic cylinder; good sealing performance helps to prevent the damage of hydraulic oil leakage to the internal components of the cylinder body 1 and the surrounding environment. Reducing the leakage of hydraulic oil can not only keep the working environment clean, but also avoid problems such as system pressure drop and performance instability caused by oil leakage. Thereby improving the reliability and service life of the entire hydraulic system.

[0023] See also Figure 1 As shown, an oil storage cylinder 4 is arranged outside the cylinder body 1, and the oil storage cylinder 4 is arranged on the ground. A feed pipe 5 is fixedly connected to the outer wall of the oil storage cylinder 4, and a filter assembly is fixedly connected to one end of the feed pipe 5. The feed pipe 5 is connected to the sealing ring 8 through the filter assembly.

[0024] In specific implementation, the oil storage cylinder 4 is mainly used to store hydraulic oil. It is an important storage container for hydraulic oil in the hydraulic system. During the operation of the hydraulic cylinder, a stable supply of hydraulic oil is required to maintain its normal operation. The oil storage cylinder 4 can provide the required hydraulic oil to the hydraulic cylinder at any time according to the needs of the system, playing a role in the storage and supply of hydraulic oil;

[0025] The feed pipe 5 is fixedly connected to the outer wall of the oil storage cylinder 4. This connection method ensures that the hydraulic oil can flow out smoothly from the oil storage cylinder 4 through the feed pipe 5. As the transmission channel of the hydraulic oil from the oil storage cylinder 4 to other components, the firmness and sealing of the connection of the feed pipe 5 are very important. A firm connection can prevent problems such as the pipe falling off during the transmission of the hydraulic oil, while good sealing can prevent the leakage of hydraulic oil, ensuring the normal operation of the system and the effective use of the oil;

[0026] One end of the feed pipe 5 is fixedly connected with a filter assembly. The filter assembly plays a key role in the hydraulic system. It can filter the hydraulic oil that is about to enter the hydraulic system to remove impurities, particulate contaminants, etc. If these impurities enter the hydraulic cylinder, they may cause wear, scratches, and other damage to the components inside the cylinder body 1, such as the piston, piston rod 3, and seals, etc., affecting the working performance and service life of the hydraulic cylinder.

[0027] See also Figure 2 A connecting ring 2 is provided on the cylinder body 1, and a connecting block 302 is fixedly connected to the top surface of the connecting ring 2.

[0028] In specific implementation, the connecting ring 2 mainly plays the role of connecting and transmitting the force. It is the intermediate link for connecting the cylinder body 1 with other external components or devices. Through the connecting ring 2, the hydraulic cylinder can be effectively connected with other related components such as load equipment, brackets, transmission mechanisms, etc. to achieve the transmission of force and motion; the connecting block 302 further expands the connection function and application scope of the hydraulic cylinder. It can be used as a connection interface for connecting with other more complex mechanical structures or control systems.

[0029] See also Figure 2 A piston rod 3 is slidably connected in the cylinder body 1, one end of the piston rod 3 is fixedly connected to the bottom surface of the connecting ring 2, and the other end of the piston rod 3 is fixedly connected to a piston body 12, which slides in the cylinder body 1.

[0030] In specific implementation, the piston rod 3 and the cylinder body 1 are connected in a sliding manner. This connection method allows the piston rod 3 to move relatively smoothly in a straight line inside the cylinder body 1, while ensuring a certain degree of sealing to prevent leakage of hydraulic oil;

[0031] When hydraulic oil enters different chambers in the cylinder 1, a pressure difference is generated on both sides of the piston body 12, thereby pushing the piston body 12 to drive the piston rod 3 to slide in the cylinder 1; when hydraulic oil enters the rodless chamber of the cylinder 1, the pressure acts on one side of the piston body 12, causing the piston body 12 and the piston rod 3 to move toward the rod chamber, and the piston rod 3 extends out of the cylinder 1; conversely, when hydraulic oil enters the rod chamber, the piston rod 3 will retract into the cylinder 1. During the entire movement process, the piston rod 3 needs to maintain stable linear motion to ensure that the force can be accurately transmitted to the external load, and its movement speed and stroke can be adjusted by the control of the hydraulic system.

[0032] See also Figure 2 A sealing gasket 301 is fixedly connected to the top surface of the cylinder body 1 , and the sealing gasket 301 abuts against the piston rod 3 .

[0033] In specific implementation, the sealing gasket 301 is fixedly connected to the top surface of the cylinder body 1. Its installation position is precisely designed to ensure that it can effectively contact with the piston rod 3 during movement and achieve a sealing function. Generally speaking, the sealing gasket 301 will be installed around the top surface of the cylinder body 1 and the part where the piston rod 3 passes through, forming a sealing area around the piston rod 3;

[0034] The sealing gasket 301 is fixedly connected to the top surface of the cylinder body 1. This connection needs to ensure that the sealing gasket 301 will not fall off or shift during operation;

[0035] The sealing gasket 301 abuts against the piston rod 3. When the piston rod 3 reciprocates, the sealing gasket 301 always maintains close contact with the surface of the piston rod 3. This contact needs to have a certain pressure to ensure that the hydraulic oil can be effectively prevented from leaking out from the inside of the cylinder body 1 through the connection between the piston rod 3 and the top surface of the cylinder body 1. The material of the sealing gasket 301 usually has a certain elasticity and can produce appropriate deformation when in contact with the piston rod 3, so as to better adapt to the surface shape and movement state of the piston rod 3 and achieve dynamic sealing;

[0036] When the hydraulic cylinder is working, the cylinder body 1 is filled with hydraulic oil and there is a certain pressure. The sealing gasket 301 forms a physical barrier by closely contacting the piston rod 3 to prevent the hydraulic oil from leaking out along the surface of the piston rod 3. The material properties of the sealing gasket 301, such as good elasticity, wear resistance and oil resistance, enable it to maintain effective sealing performance during long-term working.

[0037] See also Figure 3 The filter assembly includes a sealing ring 8, a threaded ring 801 is arranged at one end of the sealing ring 8 away from the cylinder body 1, the sealing ring 8 is threadedly connected to a mounting ring 10, and a filter screen 11 is fixedly connected to the inner wall of the mounting ring 10.

[0038] In specific implementation, the sealing ring 8 is one of the important components of the filter assembly. It first assumes the basic function of sealing to ensure that the hydraulic oil does not leak from the connection during the transmission process. In the hydraulic system, any oil leakage may lead to unstable system pressure, reduced efficiency and even equipment failure, so the sealing performance of the sealing ring 8 is crucial. It forms an effective sealing barrier by closely cooperating with other components to prevent the leakage of hydraulic oil;

[0039] The end of the sealing ring 8 away from the cylinder body 1 is provided with a threaded ring 801. The design of the threaded ring 801 is of great significance. It provides a reliable and convenient way to disassemble and install the sealing ring 8 and other components. Through the threaded connection, the sealing ring 8 can be tightly combined with the subsequent components, and at the same time, when other components in the filter assembly need to be maintained or replaced, the disassembly operation can be conveniently performed;

[0040] The mounting ring 10 is a key connection and support component in the filter assembly. It is usually made of a material with a certain strength and corrosion resistance, such as metal or high-strength plastic. The shape design of the mounting ring 10 should match the sealing ring 8 and the filter screen 11 to ensure that they can be stably connected together and work together;

[0041] The mounting ring 10 is tightly connected to the sealing ring 8 through a threaded connection. This threaded connection method utilizes the self-locking characteristics of the thread, which can maintain the stability of the connection during operation and prevent loosening due to vibration or pressure changes. When connecting the mounting ring 10 to the sealing ring 8, just screw the mounting ring 10 onto the threaded ring 801 of the sealing ring 8 in the correct rotation direction until the two fit tightly. This connection method is not only simple and reliable, but also easy to operate, so that the installation steps can be completed quickly and accurately when assembling and maintaining the filter assembly;

[0042] The filter screen 11 is fixedly connected to the inner wall of the mounting ring 10 to ensure that the filter screen 11 will not fall off during the flow of hydraulic oil.

[0043] The filter 11 is the core component of the filter assembly, and its main function is to filter impurities in the hydraulic oil. During the circulation of the hydraulic oil in the system, various impurities such as metal particles, dust, oxides, etc. may be mixed in. If these impurities enter the hydraulic cylinder, they may cause wear and damage to the cylinder body 1, piston, piston rod 3 and other components, affecting the performance and life of the hydraulic cylinder. The filter 11 has a certain pore size, which can block impurities larger than its pore size from passing through, while allowing clean hydraulic oil to pass smoothly. When the hydraulic oil flows through the filter 11, the impurities are intercepted on the surface or inside of the filter 11, thereby achieving the purification of the hydraulic oil, ensuring the cleanliness of the oil entering the hydraulic cylinder, and improving the reliability and stability of the entire hydraulic system.

[0044] See also Figure 2 The inner top surface and the inner bottom surface of the cylinder body 1 are both fixedly connected with a buffer pad 303.

[0045] In specific implementation, when the piston rod 3 drives the piston body 12 to reciprocate in the cylinder body 1, the piston body 12 will approach or contact the inner top surface and the inner bottom surface of the cylinder body 1 when it moves to the two ends of the stroke. Installing the buffer pad 303 at these two key positions can effectively play a buffering role when the piston body 12 approaches the end points of the stroke;

[0046] The cushion pad 303 is fixedly connected to the inner top surface and the inner bottom surface of the cylinder body 1. This connection needs to ensure that the cushion pad 303 will not fall off or shift during long-term operation to ensure the stability and reliability of its cushioning function;

[0047] When the hydraulic cylinder is working, the movement speed of the piston body 12 in the cylinder body 1 may be relatively fast, especially under some fast-moving working conditions. When the piston body 12 approaches the end point of the stroke, if there is no buffering measure, the piston body 12 will directly hit the inner top surface or inner bottom surface of the cylinder body 1, generating a huge impact force. This impact force will not only cause damage to the internal components of the hydraulic cylinder, such as the piston body 12, piston rod 3, cylinder body 1, etc., which may be deformed or damaged due to the instantaneous strong impact, but also generate noise and vibration, affecting the stability and service life of the equipment. The presence of the buffer pad 303 can effectively absorb and disperse this impact force, so that the piston body 12 can gradually slow down when approaching the end point of the stroke and stop moving smoothly, thereby protecting the internal structure of the hydraulic cylinder and extending its service life;

[0048] The buffer pad 303 is usually made of a material with certain elasticity and damping properties, such as rubber, polyurethane, etc. When the piston body 12 approaches the inner top surface or inner bottom surface of the cylinder body 1, it will first contact the buffer pad 303. After being hit by the impact force of the piston body 12, the buffer pad 303 will undergo elastic deformation, converting part of the impact force into elastic potential energy for storage. At the same time, due to the damping characteristics of the material, another part of the impact force will be converted into other forms of energy such as heat energy and consumed. As the piston body 12 continues to move, the buffer pad 303 will gradually be compressed, and its elastic reaction force will gradually increase, thereby gradually reducing the movement speed of the piston body 12 until it stops smoothly. In this process, the buffer pad 303 effectively alleviates the impact force of the piston body 12 on the cylinder body 1 through its own elastic deformation and energy conversion, thereby achieving a buffering effect.

[0049] Working principle: Due to various external factors, leakage is prone to occur during the oil delivery process. At this time, the control valve 7 is started, the air pipe 9 is opened, and the gas is delivered to the sealing ring 8 through the air pipe 9, and the places prone to leakage are blocked by the sealing ring 8. Since the sealing ring 8 is made of rubber and has a soft texture, when the air pump 6 inflates the sealing ring 8, the sealing ring 8 will expand and fill the gap to avoid oil leakage, reduce economic losses, and improve environmental effects; moreover, the feed pipe 5 is connected to the liquid inlet through the mounting ring 10, and the mounting ring 10 is fixedly connected with a filter 11, which can filter out some impurities in the oil storage cylinder 4 to prevent impurities from entering the cylinder body 1 and damaging the inside of the cylinder body 1. The mounting ring 10 can be removed through the thread, and the internal filter 11 can be cleaned and reused; when the oil enters the cylinder body 1, the piston rod 3 is pushed to move by changing the pressure of the two chambers. A sealing pad 301 is provided in the cylinder body 1 to provide protection and buffer for the movement of the piston rod 3.

Claims

1. A hydraulic cylinder for controlling a load, comprising a cylinder body (1), characterized in that: The outer wall of the cylinder body (1) is fixedly connected to an air pump (6), the top surface of the air pump (6) is fixedly connected to a control valve (7), an air charging end is provided on the control valve (7), the air charging end is fixedly connected to an air pipe (9), the other end of the air pipe (9) is fixedly connected to a sealing ring (8), the outer wall of the cylinder body (1) is fixedly connected to an oil inlet pipe, and the sealing ring (8) is sleeved on the oil inlet pipe.

2. A hydraulic cylinder for controlling a load according to claim 1, characterized in that: An oil storage cylinder (4) is arranged outside the cylinder body (1), and the oil storage cylinder (4) is arranged on the ground. A feed pipe (5) is fixedly connected to the outer wall of the oil storage cylinder (4), and a filter assembly is fixedly connected to one end of the feed pipe (5). The feed pipe (5) is connected to a sealing ring (8) through the filter assembly.

3. A hydraulic cylinder for controlling a load as claimed in claim 2, characterized in that: The cylinder body (1) is provided with a connecting ring (2), and the top surface of the connecting ring (2) is fixedly connected to a connecting block (302).

4. A hydraulic cylinder for controlling a load as claimed in claim 3, characterized in that: A piston rod (3) is slidably connected inside the cylinder body (1), one end of the piston rod (3) is fixedly connected to the bottom surface of the connecting ring (2), and the other end of the piston rod (3) is fixedly connected to a piston body (12), and the piston body (12) slides inside the cylinder body (1).

5. A hydraulic cylinder for controlling a load as claimed in claim 4, characterized in that: A sealing gasket (301) is fixedly connected to the top surface of the cylinder body (1), and the sealing gasket (301) abuts against the piston rod (3).

6. A hydraulic cylinder for controlling a load as claimed in claim 5, characterized in that: The filter assembly comprises a sealing ring (8), a threaded ring (801) is provided at one end of the sealing ring (8) away from the cylinder body (1), the sealing ring (8) is threadedly connected to a mounting ring (10), and a filter screen (11) is fixedly connected to the inner wall of the mounting ring (10).

7. A hydraulic cylinder for controlling a load as claimed in claim 6, characterized in that: The inner top surface and the inner bottom surface of the cylinder body (1) are both fixedly connected with a buffer pad (303).

8. A hydraulic cylinder for controlling a load as claimed in claim 7, characterized in that: The sealing ring (8) is made of rubber.

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