Rapidly-started oil cylinder

Abstract

A guide sleeve is arranged in a cylinder body, piston ring columns are arranged on the two sides of a piston, a plurality of oil through holes are formed in the surface of the piston ring, steel balls are placed in cavities at the hole ends of the oil through holes, the piston ring columns make contact with the guide sleeve, the whole piston is of a cross-shaped structure, and a channel, close to one side of each oil through hole, of each steel ball is a rodless cavity channel. Before working, the steel ball is embedded into the rodless cavity channel and can move in the cavity, a rod cavity channel is formed in the side, close to the cylinder body, of the steel ball, a second sealing ring is arranged in the middle of the piston, a sliding strip is arranged on one side of the second sealing ring and tightly attached to the cylinder body, and a first sealing ring is arranged at one end of the piston. According to the utility model, the steel ball is used for realizing quick starting, the cost is lower, and the mute effect is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinders, in particular to a quick-start oil cylinder. Background Art

[0002] The field of rapid-start hydraulic cylinders is complex and critical. Current rapid-start systems typically utilize a spring radially mounted on the piston and a check valve composed of a steel ball. Because the cylinder is mounted vertically, installing the check valve perpendicular to the cylinder requires a tight seal on the piston shaft and high spring parameters, making it difficult to verify the valve's effectiveness during operation. The spring's compressed length is difficult to control during each installation, resulting in unstable instantaneous activation and varying behavior during the cylinder's movement. Sometimes, a rattling noise can be heard during the cylinder's descent.

[0003] In the prior art, patent publication number CN216642645U discloses an oil cylinder with buffering and quick-starting functions, including a cylinder barrel, a piston rod, a piston, and a cylinder head. A buffer device including a buffer plug and a buffer pit is provided in the oil cylinder. The buffer pit is opened at the front end of the cylinder head. The buffer plug includes a buffer column and a guide kit. A limiting structure is provided at the bottom end of the buffer column. The guide kit is floatingly sleeved and limited on the buffer column to guide the buffer plug to slide into the buffer pit. The cylinder head is also provided with an oil inlet and a side oil circuit. The oil inlet is connected to the buffer pit. The side oil circuit is installed with a one-way valve so that the oil can only enter the side oil circuit from the wall of the buffer pit to the rod chamber. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the noise is easy to occur when the oil cylinder is started, and to provide a quick-start oil cylinder with a compact structure and quiet starting.

[0005] Another purpose of the present invention is to solve the problem of slow oil cylinder starting. The present invention adopts a steel ball to control the direction of oil, thereby providing a quick-start oil cylinder with a compact structure and good sealing effect.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a quick-start oil cylinder, a guide sleeve is provided in the cylinder body, piston ring columns are on both sides of the piston, a plurality of oil holes are provided on the piston ring surface, a steel ball is placed in the cavity at the end of the oil hole, the piston ring column is in contact with the guide sleeve, and the piston as a whole is a cross-shaped structure.

[0007] Preferably, the channel on the side of the steel ball close to the oil hole is a rodless cavity, and the steel ball is embedded in the rodless cavity before work.

[0008] Furthermore, the steel ball is movable in the cavity, and the side of the steel ball close to the cylinder body is a rod cavity.

[0009] Furthermore, a plurality of piston radial holes are provided on the piston, and the piston radial holes are communicated with the rod cavity and the rodless cavity.

[0010] Preferably, a second sealing ring is provided in the middle of the piston, and a sliding bar is provided on one side of the second sealing ring to closely contact the cylinder body.

[0011] Preferably, a first sealing ring is provided at one end of the piston.

[0012] Preferably, an inner groove is provided at one end of the piston, and a fixing piece is used in the cylinder body to snap into the inner groove.

[0013] Preferably, a piston hole is provided on one side of the cavity, and the diameter of the piston hole is smaller than the diameter of the steel ball.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the piston of the present invention has a cross-shaped structure, good sealing effect, and stable structure; the present invention uses steel balls to achieve rapid starting, lowers the cost, and has a silent effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the oil cylinder of the utility model rising to the top.

[0016] Figure 2 This is a schematic diagram of the utility model when the oil cylinder rises to the top steel ball and opens.

[0017] In the figure: 1. First sealing ring; 2. Piston; 3. Inner groove; 4. Fixing piece; 5. Piston radial hole; 6. Rod cavity; 7. Guide sleeve; 8. Piston small hole; 9. Steel ball; 10. Second sealing ring; 11. Ring sleeve; 12. Rodless cavity; 13. Oil hole; 14. Cylinder body; 15. Piston ring column; 16. Cavity. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be further described below through specific embodiments in combination with the accompanying drawings. The described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Example 1: Reference Figures 1 to 2, a quick-start oil cylinder, the main structure includes a cylinder body 14, a guide sleeve 6 is installed inside the cylinder body 14, the guide sleeve 6 is used to position the piston 2 and maintain its correct direction of movement. When working, the piston 2 contacts the guide sleeve 6. The piston 2 is a cross-shaped structure as a whole. The cross-shaped structure improves the stability and durability of the oil cylinder, and also enhances its structural strength. Piston ring columns 15 are respectively installed on both sides of the piston 2. The piston ring column 15 not only plays a supporting role, but also ensures that the piston moves smoothly in the cylinder body, reduces wear and extends the service life of the oil cylinder. Several oil holes 13 are designed on the ring surface of the piston 2. The oil holes 13 are channels for the circulation of oil when the oil cylinder is working, ensuring that the oil can be quickly and evenly distributed to various parts of the oil cylinder.

[0020] At one end of the annular oil hole 13 of the piston 2, a cavity 16 is designed, and the steel ball 9 is placed in this cavity. The function of the steel ball 9 is to control the flow direction of the oil through its movement when the cylinder is working, thereby achieving rapid startup of the cylinder. This design enables the cylinder to quickly respond to operating instructions and improve work efficiency. When the cylinder is in operation, the piston ring column 15 will collide with the guide sleeve 6. The side of the steel ball 9 near the oil hole 13 is a rodless cavity 12. Before the cylinder is in operation, the steel ball 9 will be embedded in this rodless cavity 12, thereby maintaining the oil seal before the cylinder is started, preventing oil leakage and ensuring the stability and safety of the cylinder. The steel ball 9 is movable within the cavity 16 and can adjust its position according to the operating state of the cylinder to control the flow direction of the oil. The side of the steel ball 9 near the cylinder body 14 is a rod cavity 6, which is together with the rodless cavity 12.

[0021] Specifically, the utility model is composed of the following key parts: cylinder body, guide sleeve 7, piston 2, steel ball 9, rod cavity 6 and rodless cavity 12. These components work together to achieve rapid start-up and smooth operation of the oil cylinder.

[0022] During the cylinder's ascent, the steel ball 9 and the contact surface of the rodless cavity 12 form a tight seal, ensuring that the oil passage between the rodless cavity 12 and the rod cavity 6 is cut off. This design prevents the flow of hydraulic oil between the two cavities, preparing for the next operation.

[0023] When piston 2 rises to the point where it collides with guide sleeve 7, the pressure at the interface of rodless cavity 12 becomes greater than the pressure in rod cavity 6. This pressure difference causes the hydraulic oil to push steel ball 9, thereby opening rodless cavity 12 and allowing hydraulic oil to flow from rodless cavity 12 into rod cavity 6. During this process, the pressures in the upper and lower cavities gradually equalize, creating conditions for the rapid activation of the piston.

[0024] As the piston continues to rise and eventually disengages guide sleeve 7, the pressure at the pressure interface of rod chamber 6 becomes greater than that of rodless chamber 12. At this point, steel ball 9 again engages rodless chamber 12, forming a seal that once again blocks the oil passage between rodless chamber 12 and rod chamber 6. This step ensures stability and controllability during the cylinder's ascent.

[0025] During the cylinder's descent, piston 2 communicates with rod chamber 6 and rodless chamber 12 via piston radial hole 5 and piston aperture 13. This design allows for free flow of oil during the cylinder's descent, ensuring proper descent while minimizing energy loss and improving cylinder efficiency.

[0026] Example 2: Reference Figures 1 to 2 On the basis of Example 1, Example 2 improves it, a quick-start oil cylinder, whose core structure is composed of a cylinder body 14, and the interior of the cylinder body is equipped with a guide sleeve 6 to ensure the precise positioning and movement direction of the piston 2. The piston 2 interacts with the guide sleeve 6 during operation. Its unique cross-shaped design not only improves the stability and durability of the oil cylinder, but also enhances the strength of the overall structure. Piston ring columns 15 are assembled on both sides of the piston 2. The function of these ring columns is to provide support to ensure that the piston slides smoothly in the cylinder body, reduce friction and wear, and thus extend the service life of the oil cylinder. There are multiple oil holes 13 evenly distributed on the annular surface of the piston 2. These channels are the necessary paths for the flow of oil when the cylinder is in operation, ensuring that the oil can be quickly and evenly delivered to various parts of the cylinder.

[0027] A cavity 16 is designed at the end of the oil hole 13 on the ring surface of the piston 2, and the steel ball 9 is placed therein. The steel ball 9 controls the flow direction of the oil through its displacement during the operation of the cylinder, thereby realizing the rapid start-up of the cylinder, enabling the cylinder to quickly respond to operating instructions and improve work efficiency. When the cylinder is in operation, the piston ring column 15 is in contact with the guide sleeve 6, and the side of the steel ball 9 close to the oil hole 13 is the rodless cavity 12. Before the cylinder is started, the steel ball 9 is embedded in the rodless cavity 12 to keep the oil sealed, prevent leakage, and ensure the stability and safety of the cylinder. The steel ball 9 is movable in the cavity 16, and the steel ball 9 adjusts its position according to the working state of the cylinder to control the flow direction of the oil. The side of the steel ball 9 close to the cylinder body 14 is provided with a rod cavity 6, and the rod cavity 6 and the rodless cavity 12 work together.

[0028] The middle of the piston 2 is equipped with a second sealing ring 10, which improves the sealing effect of the oil cylinder. The second sealing ring 10 forms a sealed space between the piston 2 and the cylinder body 14. The second sealing ring 10 prevents the leakage of high-pressure oil during operation of the oil cylinder, ensuring the stability of the internal pressure of the oil cylinder, thereby improving the reliability and safety of the oil cylinder. A sliding bar 11 is connected to one side of the second sealing ring 10. This sliding bar 11 is tightly attached to the cylinder body 14. Its material and design are designed to reduce friction while maintaining sealing performance, allowing the piston 2 to move smoothly and efficiently within the cylinder body 14.

[0029] One end of the piston 2 is also equipped with a first sealing ring 1, another crucial component of the cylinder's sealing system. Located at the end of the piston 2, the first sealing ring 1 works in conjunction with the second sealing ring 10 to provide dual sealing for the cylinder. This helps reduce oil leakage caused by poor sealing, extending the cylinder's maintenance cycle and service life. The design of the first sealing ring 1 takes into account the cylinder's performance requirements at varying operating pressures, ensuring a good seal even under high-pressure conditions, preventing oil leakage and protecting the surrounding environment and equipment from contamination.

[0030] The specific working steps of this embodiment are as follows: During the ascending process of the oil cylinder, the contact surface between the steel ball 9 and the rodless cavity 12 forms a sealed fit, effectively blocking the oil flow channel between the rodless cavity 12 and the rod cavity 6. This sealing design prevents the hydraulic oil from flowing between the two cavities, providing the necessary conditions for subsequent operations.

[0031] When piston 2 rises and contacts guide sleeve 7, the pressure at rodless cavity 12 exceeds that in rod cavity 6, creating a pressure differential. This pressure differential propels the hydraulic oil to displace steel ball 9, opening rodless cavity 12 and allowing hydraulic oil to flow from rodless cavity 12 into rod cavity 6. As this process progresses, the pressures between the two cavities gradually reach equilibrium, ensuring the necessary conditions for rapid piston actuation.

[0032] As piston 2 continues to rise and eventually releases guide sleeve 7, the pressure at the rod chamber 6 exceeds that at rodless chamber 12. In this situation, steel ball 9 reengages rodless chamber 12, forming a seal and blocking the oil flow between rodless chamber 12 and rod chamber 6. This step ensures the stability and controllability of the cylinder during its ascent.

[0033] During the cylinder's descent, piston 2 establishes communication between rod chamber 6 and rodless chamber 12 via radial piston hole 5 and small piston hole 13. This design allows free flow of oil during the cylinder's descent, ensuring a smooth descent while minimizing energy loss and improving efficiency.

[0034] Example 3: Reference Figures 1 to 2 Based on Example 1, Example 3 further optimizes it. A guide sleeve 6 is specially designed inside the cylinder body to ensure the precise positioning and correct movement direction of the piston 2. During operation, the piston 2 interacts with the guide sleeve 6. Piston ring columns 15 are assembled on both sides of the piston 2. The main function of these ring columns is to provide the necessary support to ensure that the piston can slide smoothly within the cylinder body, reduce friction and wear, and thus extend the service life of the cylinder. Multiple oil holes 13 are evenly distributed on the annular surface of the piston 2. These holes are the key paths for oil flow during cylinder operation, ensuring that the oil can be quickly and evenly delivered to all parts of the cylinder. The end of the oil hole 13 on the annular surface of the piston 2 is designed with a cavity 16, which is where the steel ball 9 is placed. During cylinder operation, the steel ball 9 controls the flow direction of the oil through its displacement, achieving rapid startup of the cylinder, allowing the cylinder to quickly respond to operating commands and improving work efficiency. When the cylinder is in operation, the piston ring column 15 contacts the guide sleeve 6, and the side of the steel ball 9 near the oil hole 13 is a rodless cavity 12.

[0035] Before the cylinder is activated, a steel ball 9 is embedded in the rodless cavity 12, maintaining a tight seal and preventing leakage, thereby ensuring the cylinder's stability and safety. The steel ball 9 is mobile within the cavity 16, adjusting its position according to the cylinder's operating state and controlling the flow of oil. The side of the steel ball 9 closest to the cylinder body 14 is equipped with a rod cavity 6, which works in conjunction with the rodless cavity 12. A second sealing ring 10 is located in the middle of the piston 2, enhancing the cylinder's sealing effectiveness. The second sealing ring 10 forms a sealed space between the piston 2 and the cylinder body 14, preventing leakage of high-pressure oil during cylinder operation and ensuring stable internal pressure, thereby improving the cylinder's operational reliability and safety. A sliding bar 11 is connected to one side of the second sealing ring 10, which fits snugly against the cylinder body 14. Its material and design are designed to reduce friction while maintaining a tight seal, allowing the piston 2 to move smoothly and efficiently within the cylinder body 14. One end of the piston 2 is also equipped with a first sealing ring 1, another key component of the cylinder's sealing system. The first sealing ring 1 is located at the end of the piston 2 and works in conjunction with the second sealing ring 10 to provide double sealing protection for the cylinder.

[0036] Piston 2 is a key component in the cylinder, responsible for converting hydraulic energy into mechanical energy, thereby driving the movement of related mechanical components. An inner groove 3 is designed at one end of piston 2. This inner groove 3 not only increases the structural strength of piston 2 but also provides a stable connection point. Cylinder body 14 is the main structure of the cylinder. Inside, we use a fixing member 4, which snaps into the inner groove 3 of piston 2 to ensure the correct position and stable movement of piston 2 inside the cylinder. This design improves the reliability and durability of the cylinder while also simplifying the assembly process.

[0037] Piston 2 is also equipped with several radial holes 5, which serve as key channels for oil flow within the cylinder. The design of these radial holes 5 allows for rapid oil flow within piston 2, enabling quick response and precise control of piston 2. The distribution and size of these holes are carefully calculated to ensure uniform oil flow and smooth movement of piston 2, which is crucial for improving the cylinder's operating efficiency.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. A quick start oil cylinder, characterized in that: A guide sleeve (7) is provided in the cylinder body (14), piston ring columns (15) are provided on both sides of the piston (2), a plurality of oil holes (13) are provided on the ring surface of the piston (2), a steel ball (9) is placed in a cavity (16) at the end of the oil hole (13), the piston ring column (15) is in contact with the guide sleeve (7), and the piston (2) as a whole is a cross-shaped structure.

2. A quick start oil cylinder according to claim 1, characterized in that: The passage on one side of the steel ball (9) close to the oil hole (13) is a rodless cavity (12), and the steel ball (9) is embedded in the rodless cavity (12) before operation.

3. A quick start oil cylinder according to claim 2, characterized in that: The steel ball (9) is movable in the cavity (16), and the side of the steel ball (9) close to the cylinder body (14) is a rod cavity (6).

4. A quick start oil cylinder according to claim 3, characterized in that: A plurality of piston radial holes (5) are provided on the piston (2), and the piston radial holes (5) are communicated with the rod cavity (6) and the rodless cavity (12).

5. A quick start oil cylinder according to claim 1 or 2 or 3 or 4, characterized in that: A second sealing ring (10) is provided in the middle of the piston (2), and a sliding strip (11) is provided on one side of the second sealing ring (10) and is tightly attached to the cylinder body (14).

6. A quick start oil cylinder according to claim 1, 2, 3 or 4, characterized in that: A first sealing ring (1) is provided at one end of the piston (2).

7. A quick start oil cylinder according to claim 1 or 2 or 3 or 4, characterized in that: An inner groove (3) is provided at one end of the piston (2), and a fixing piece (4) is clamped into the inner groove (3) in the cylinder body (14).

8. The quick-start oil cylinder according to claim 1, characterized in that: A piston hole (8) is provided on one side of the cavity (16), and the diameter of the piston hole (8) is smaller than the diameter of the steel ball (9).

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