A one-way valve balance cylinder

Abstract

This application relates to a one-way valve balance cylinder, which includes a cylinder body, one end of which is connected to a cylinder seat, and the other end of which is connected to an end cap. A piston rod is located inside the cylinder body, one end of which is connected to a slider, and the other end to a piston plate. The piston plate separates a buffer chamber and a pressure chamber. A sealing mechanism is located at the connection between the cylinder seat and the slider. An adjusting cylinder is located on the inner wall of the cylinder body, containing a plug with a vent hole. The adjusting cylinder also includes an exhaust pipe and a control valve. A return spring is fitted onto the piston rod, and a rubber ring is located on the outer circumference of the plug. The vent hole has a vent connector. The cylinder body is detachably connected to the cylinder seat and the end cap. The application also includes screws, nuts, and other structures for installation and positioning. This application achieves the effect of reducing motion resistance when the slider moves downwards, ensuring rapid and accurate arrival at the processing station; offsetting part of the slider's own weight when it retracts upwards, reducing the power output required by the drive mechanism to drive the slider upwards; ensuring operational safety and stability; and facilitating disassembly, installation, replacement, and maintenance.

Description

Technical Field

[0001] This application relates to the field of balancing and buffering technology for screw presses, and in particular to a one-way valve balancing cylinder. Background Technology

[0002] As a key piece of equipment widely used in metal processing fields such as forging and stamping, the running stability, response speed, and energy utilization efficiency of the screw press directly affect the workpiece processing accuracy and production efficiency. During the working cycle of the screw press, the screw needs to complete a reciprocating motion of rapid downward stamping and smooth upward reset. In this process, the screw's own weight and inertia have a significant impact on the operation of the equipment.

[0003] The slide block of a screw press has a certain weight, especially in large forging equipment where it can weigh several tons. During downward movement, gravity accelerates the slide block's descent, while during upward retraction, gravity becomes a load hindering movement. During the downward sliding phase, it's crucial to minimize resistance to ensure the slide block reaches the processing station quickly and accurately, avoiding excessive resistance that could lead to energy loss in stamping, prolonged processing time, or even affect workpiece quality. Conversely, during the upward retraction phase, it's necessary to appropriately increase resistance to counteract the downward tendency caused by the slide block's own weight, preventing excessively fast retraction that could cause equipment impact and vibration, reducing component wear, and ensuring operational safety and stability.

[0004] Therefore, the urgent need for a component that can coordinate gravity and motion resistance in the reciprocating motion of the slider to ensure the stability and safety of the slider's motion is a problem that needs to be solved. Utility Model Content

[0005] To solve the above-mentioned technical problems, this application provides a one-way valve balance cylinder.

[0006] The one-way valve balance cylinder provided in this application adopts the following technical solution: A one-way valve balance cylinder includes a cylinder body, one end of which is connected to a cylinder seat, and the other end is connected to an end cap. A piston rod is disposed inside the cylinder body, one end of which extends out of the cylinder seat and is fixed to a slider, and the other end of which is located inside the cylinder body and connected to a piston plate. The piston plate divides the cylinder body into a buffer chamber and a pressure chamber. A through hole is provided on the side wall of the cylinder body corresponding to the pressure chamber. The inner diameter of the piston plate is the same as the inner diameter of the cylinder body. A sealing mechanism is provided at the connection between the cylinder seat and the slider. An adjusting cylinder is disposed on the inner wall of the cylinder body near the sealing mechanism. A first stepped groove is provided inside the adjusting cylinder. A plug is disposed inside the adjusting cylinder. The diameter of the plug is the same as the inner diameter of the first stepped groove. A through hole for the piston rod to pass through is provided on the plug. Multiple vent holes are provided on the plug to connect the adjusting cylinder and the buffer chamber. An exhaust pipe extending out of the cylinder body is fixedly connected to the adjusting cylinder. A control valve is fixedly connected to the exhaust pipe.

[0007] By adopting the above technical solution, when the slider moves downward, it drives the piston rod downward. The piston plate compresses the air in the buffer chamber, and the compressed air pushes the plug into the regulating cylinder, creating a gap between the plug and the inner wall of the regulating cylinder for airflow. At the same time, the control valve on the exhaust pipe exhausts gas outward, allowing the gas in the buffer chamber to quickly enter the regulating cylinder through the vent and the gap between the regulating cylinder and the plug, and then quickly exhaust outward through the exhaust pipe. When the slider slides downward, the movement resistance is minimized as much as possible, ensuring that the slider can quickly and accurately reach the processing position. When the slider needs to move upward, the pressure air source guides air into the regulating cylinder through the exhaust pipe, making the air pressure in the regulating cylinder greater than the air pressure in the buffer chamber, pushing the plug upward, so that the plug abuts against the first step groove, closing the gap between the plug and the first regulating cylinder. This allows the air in the exhaust pipe to enter the buffer chamber only through the vent, increasing the resistance to the upward movement of the regulating plate, counteracting the downward tendency caused by the slider's own weight, avoiding excessively fast reset speed that could cause equipment impact and vibration, reducing component wear, and ensuring operational safety and stability.

[0008] Optionally, a return spring is fitted onto the piston rod, and the return spring is located between the plug and the sealing mechanism.

[0009] By adopting the above technical solution, during user operation, when the slider falls, the piston plate moves downward to compress air, pushing the plug downward to compress the return spring. When the slider slides upward, the pressure air source guides air into the regulating cylinder through the exhaust pipe. The airflow pressure and the tension of the return spring push the plug upward, causing the plug to engage in the first step groove, closing the gap between the plug and the regulating cylinder. Air enters the buffer chamber through the vent hole. As the airflow in the buffer chamber increases, the resulting upward thrust pushes the piston plate upward, which can offset part of the slider's own weight, reducing the power output required by the drive mechanism to drive the slider upward, thereby reducing energy consumption during equipment operation and saving operating costs in the long term.

[0010] Optionally, a second stepped groove is provided on the outer periphery of the plug, and a rubber ring is fixedly connected in the second stepped groove.

[0011] By adopting the above technical solution, when the user uses the device, the tension of the return spring pushes the plug upward, and the rubber ring in the second step groove tightly fits the plug and the adjusting cylinder, increasing the sealing between the plug and the adjusting cylinder.

[0012] Optionally, the vent hole of the plug is internally threaded with an air guide connector, and an air passage hole is opened in the middle of the air guide connector.

[0013] By adopting the above technical solution, the air passage of the air guide connector does not interfere with the airflow during use. The air guide connector is threaded, making it easy to replace air passages of different diameters to adapt to different air passage rates.

[0014] Optionally, the cylinder block seat has a relief hole at its center for the piston rod to pass through. The sealing mechanism includes a sealing block and a connecting block that are engaged in the relief hole. The connecting block and the sealing block are fixed together by bolts. Both the sealing block and the connecting block have sliding holes for the piston rod to pass through. A sealing groove is provided on the side of the sealing block near the sliding block in the middle. A sealing component is provided in the sealing groove.

[0015] By adopting the above technical solution, the sealing block and the connecting block are bolted together during use, which facilitates disassembly and installation. The sealing block is equipped with a sealing component, which can increase the seal between the sealing block and the piston rod and reduce air leakage.

[0016] Optionally, the sealing assembly includes a sealing gasket snapped into a sealing groove, a circular hole in the center of the sealing gasket for the piston rod to pass through, and an annular first sealing groove and a second sealing groove on the inner wall of the circular hole. A skeleton oil seal is provided in the first sealing groove, and an O-ring is placed in the second sealing groove.

[0017] By adopting the above technical solution, the skeleton oil seal and O-ring can provide a double seal between the piston rod and the sealing block during use, reducing gas leakage between the sealing block and the piston rod during the reciprocating motion of the piston rod.

[0018] Optionally, the cylinder body is detachably connected to the cylinder body seat, and the cylinder body is detachably connected to the end cover.

[0019] By adopting the above technical solution, the user can easily disassemble and install the balance cylinder, thus facilitating replacement and maintenance.

[0020] Optionally, multiple screws are fixedly connected to the cylinder block seat, and the side wall of the cylinder block is provided with mounting holes for the screws to pass through. The end cover is provided with connecting holes corresponding to the positions of the screws, and the bolts are threaded through the mounting holes and connecting holes in sequence and then connected with nuts.

[0021] By adopting the above technical solution, when using the device, the user can remove the nut and then remove the end cap and cylinder body from the end of the screw in sequence, which facilitates the maintenance of the adjustment and sealing mechanism.

[0022] Optionally, the cylinder seat is fixedly connected with multiple positioning pins corresponding to the position of the adjusting cylinder, the side wall of the adjusting cylinder is fixedly connected with positioning holes, the end of the adjusting cylinder away from the cylinder seat is provided with an insertion groove, the inner wall of the cylinder is provided with a positioning cylinder for insertion into the insertion groove, and the end of the positioning cylinder away from the adjusting cylinder abuts against the end cover.

[0023] By adopting the above technical solution, when the user uses the device, the positioning pin is inserted into the positioning hole to pre-position the adjusting cylinder. After the positioning cylinder is inserted into the insertion slot and the end cover is fixed to the cylinder body, the positioning cylinder, adjusting cylinder and cylinder body can be fixed, which is convenient for disassembly and installation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a cross-sectional view of an embodiment of this application; Figure 3 yes Figure 2 Enlarged view of part A.

[0025] Explanation of reference numerals in the attached drawings: 1. Cylinder block; 11. Mounting hole; 12. Buffer chamber; 13. Pressure chamber; 2. Cylinder block seat; 21. Positioning pin; 22. Clearance hole; 3. End cap; 31. Connecting hole; 4. Piston rod; 5. Piston plate; 6. Sealing mechanism; 61. Sealing block; 62. Connecting block; 63. Sealing groove; 64. Sealing assembly; 641. Sealing gasket; 642. Round hole; 643. First sealing groove; 644. Second sealing groove; 645. Skeleton oil seal; 646. O-ring seal; 7. Adjusting cylinder; 71. First step groove; 72. Plug; 721. Through hole; 722. Vent hole; 723. Second step groove; 724. Rubber ring; 73. Exhaust pipe; 74. Return spring; 75. Air guide connector; 751. Vent hole; 76. Positioning hole; 77. Insertion groove; 78. Positioning cylinder; 8. Screw. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0027] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0029] This application discloses a one-way valve balance cylinder, referring to... Figure 1 and Figure 2 The system includes a cylinder body 1, a cylinder body 1 seat, an end cap 3, a piston rod 4, a piston plate 5, a sealing mechanism 6, an adjusting cylinder 7, a plug 72, and an exhaust pipe 73. One end of the cylinder body 1 is connected to the cylinder body 1 seat, and the other end is connected to the end cap 3, forming a closed space. The piston rod 4 is located inside the cylinder body 1, with one end extending out of the cylinder body 1 seat and fixed to the slider, and the other end connected to the piston plate 5. The piston plate 5 divides the inside of the cylinder body 1 into a buffer chamber 12 and a pressure chamber 13. The sealing mechanism 6 is located at the connection between the cylinder body 1 seat and the slider. The adjusting cylinder 7 is located on the inner wall of the cylinder body 1 near the sealing mechanism 6, and the plug 72 is installed inside the adjusting cylinder 7. The exhaust pipe 73, which extends out of the cylinder body 1, is fixedly connected to the adjusting cylinder 7. This structure can adjust the air pressure inside the cylinder body 1 according to the direction of movement of the slider, thereby coordinating the gravity and movement resistance during the reciprocating motion of the slider and ensuring the stability and safety of the slider's movement.

[0030] Specifically, cylinder body 1 is the main structure of the entire balance cylinder, usually made of high-strength metal materials, such as carbon steel or alloy steel, to ensure it can withstand greater pressure. Cylinder body 1 is generally cylindrical, and its inner wall requires precision machining to ensure the piston plate 5 can slide smoothly within it. A cylinder body 1 seat is connected to one end of cylinder body 1, serving to support and fix it. It is usually detachably connected to cylinder body 1, such as by bolts, for easy disassembly and maintenance. A clearance hole 22 is provided on the cylinder body 1 seat for the piston rod 4 to pass through, allowing it to connect to the slider. End cap 3 is connected to the other end of cylinder body 1, also serving to seal it. It is also detachably connected to cylinder body 1, such as by bolts.

[0031] The piston rod 4 is a key component connecting the slider and the piston plate 5. It is generally made of high-strength steel to ensure sufficient strength and rigidity. One end of the piston rod 4 extends out of the cylinder body 1 and is fixed to the slider. The fixing method can be welding, threaded connection, etc., to ensure that the piston rod 4 can accurately transmit the movement of the slider. The other end of the piston rod 4 is located inside the cylinder body 1 and is fixed to the piston plate 5. The inner diameter of the piston plate 5 is the same as the inner diameter of the cylinder body 1, so that the piston plate 5 can divide the inside of the cylinder body 1 into a buffer chamber 12 and a pressure chamber 13. The piston plate 5 is usually made of wear-resistant materials, such as copper alloy or aluminum alloy, to reduce friction with the inner wall of the cylinder body 1.

[0032] Reference Figure 2 and Figure 3 The sealing mechanism 6 includes a sealing block 61 and a connecting block 62 that are engaged within the clearance hole 22. The connecting block 62 and the sealing block 61 are fixed together by bolts. Both the sealing block 61 and the connecting block 62 have sliding holes through which the piston rod 4 passes. A sealing groove 63 is formed in the middle of the sealing block 61 near the sliding block, and a sealing assembly 64 is disposed within the sealing groove 63. The sealing assembly 64 includes a sealing gasket 641 engaged within the sealing groove 63. A circular hole 642 is formed in the middle of the sealing gasket 641 for the piston rod 4 to pass through. An annular first sealing groove 643 and a second sealing groove 644 are formed on the inner wall of the circular hole 642. A skeleton oil seal 645 is disposed within the first sealing groove 643, and an O-ring 646 is placed within the second sealing groove 644. The skeleton oil seal 645 and the O-ring 646 provide a double seal between the piston rod 4 and the sealing block 61, reducing gas leakage between the sealing block 61 and the piston rod 4 during the reciprocating motion of the piston rod 4.

[0033] The regulating cylinder 7 is located on the inner wall of the cylinder body 1 near the sealing block 61. It is generally made of metal, such as stainless steel. A first stepped groove 71 is formed inside the regulating cylinder 7. A plug 72 is installed inside the regulating cylinder 7. The diameter of the plug 72 is the same as the inner diameter of the first stepped groove 71. A through hole 721 for the piston rod 4 to pass through is formed on the plug 72. Multiple vent holes 722 are also formed on the plug 72, which connect the regulating cylinder 7 and the buffer chamber 12. A venting connector 75 is threaded into the vent hole 722 of the plug 72. An vent hole 751 is formed in the middle of the venting connector 75. The vent hole 751 of the venting connector 75 does not interfere with the airflow. The threaded connection of the venting connector 75 facilitates the replacement of vent holes 751 with different diameters to adapt to different airflow rates. The plug 72 can be made of materials such as plastic or rubber to ensure that it can slide flexibly inside the regulating cylinder 7. The plug 72 has a second stepped groove 723 on its outer periphery. A rubber ring 724 is fixedly connected in the second stepped groove 723. When the tension of the return spring 74 pushes the plug 72 to move upward, the rubber ring 724 in the second stepped groove 723 tightly fits the plug 72 and the adjusting cylinder 7, increasing the sealing between the plug 72 and the adjusting cylinder 7.

[0034] The exhaust pipe 73 is fixedly connected to the regulating cylinder 7 and extends out of the cylinder body 1. A control valve is fixedly connected to the exhaust pipe 73, which can control the ventilation state of the exhaust pipe 73. The exhaust pipe 73 is generally made of metal tubing, such as steel or copper tubing, to ensure that it has good pressure resistance and corrosion resistance.

[0035] When the slider moves downward, it drives the piston rod 4 downward. The piston plate 5 compresses the air in the buffer chamber 12. The compressed air pushes the plug 72 to slide into the regulating cylinder 7, creating a gap between the plug 72 and the inner wall of the regulating cylinder 7 for airflow to pass through. At the same time, the control valve on the exhaust pipe 73 exhausts gas outward, allowing the gas in the buffer chamber 12 to quickly enter the regulating cylinder 7 through the vent 722 and the gap between the regulating cylinder 7 and the plug 72, and then quickly exhaust outward through the exhaust pipe 73. As the slider slides downward, the movement resistance is minimized as much as possible to ensure that the slider can reach the processing station quickly and accurately. When the slider needs to retract upwards, the exhaust pipe 73 guides air into the regulating cylinder 7, making the air pressure in the regulating cylinder 7 greater than the air pressure in the buffer chamber 12. This pushes the plug 72 upwards, causing the plug 72 to abut against the first stepped groove 71, closing the gap between the plug 72 and the first regulating cylinder 7. This allows air from the exhaust pipe 73 to enter the buffer chamber 12 only through the vent 722. As the airflow in the buffer chamber 12 increases, the resulting upward thrust pushes the piston plate 5 upwards, which can offset part of the slider's weight. This reduces the power output required by the drive mechanism to drive the slider upwards, thereby reducing energy consumption during equipment operation and saving operating costs in the long term.

[0036] Additionally, a return spring 74 is fitted onto the piston rod 4, located between the plug 72 and the sealing block 61. During the slide's descent, the piston plate 5 moves downwards, compressing air and pushing the plug 72 downwards to compress the return spring 74. When the pressure in the buffer chamber 12 is less than the pressure in the regulating cylinder 7, the tension of the return spring 74 pushes the plug 72 upwards, causing it to engage in the first step groove 71, closing the gap between the plug 72 and the regulating cylinder 7. When the slide moves upwards, air can only enter the buffer chamber 12 through the vent 722. As the airflow in the buffer chamber 12 increases, the resulting upward thrust pushes the piston plate 5 upwards.

[0037] The cylinder body 1 and its base, as well as the cylinder body 1 and end cover 3, are detachably connected. Specifically, multiple screws 8 are fixedly connected to the cylinder body 1 base. The side wall of the cylinder body 1 has mounting holes 11 for the screws 8 to pass through. The end cover 3 has connecting holes 31 corresponding to the positions of the screws 8. Bolts pass through the mounting holes 11 and connecting holes 31 in sequence and are threaded onto nuts. By removing the nuts, the end cover 3 and cylinder body 1 can be removed sequentially from the ends of the screws 8, facilitating maintenance of the adjusting cylinder 7 and sealing mechanism 6.

[0038] Multiple positioning pins 21 are fixedly connected to the cylinder body 1 corresponding to the position of the adjusting cylinder 7. Positioning holes 76 are fixedly connected to the side wall of the adjusting cylinder 7. An insertion groove 77 is provided at the end of the adjusting cylinder 7 away from the cylinder body 1. A positioning cylinder 78 is provided on the inner wall of the cylinder body 1 for insertion into the insertion groove 77. The end of the positioning cylinder 78 away from the adjusting cylinder 7 abuts against the end cover 3. By inserting the positioning pins 21 into the positioning holes 76, the adjusting cylinder 7 is pre-positioned. After the positioning cylinder 78 is inserted into the insertion groove 77 and the end cover 3 is fixed to the cylinder body 1, the positioning cylinder 78, the adjusting cylinder 7, and the cylinder body 1 are fixed together, facilitating disassembly and installation.

[0039] The implementation principle of this embodiment is as follows: Through its ingenious structural design, the one-way valve balance cylinder can automatically adjust the air pressure within the cylinder 1 according to the direction of the slider's movement, thereby effectively coordinating the slider's gravity and motion resistance during reciprocating motion. When the slider moves downwards, the motion resistance is reduced, ensuring the slider quickly and accurately reaches the processing station. When the slider retracts upwards, the increased airflow within the buffer chamber 12 generates an upward thrust that pushes the piston plate 5 upwards, offsetting part of the slider's weight and reducing the power output required by the drive mechanism to propel the slider upwards. This reduces energy consumption during equipment operation, saving operating costs over the long term, reducing component wear, and improving the safety and stability of equipment operation. Furthermore, the detachable connections between components facilitate maintenance and replacement, improving the maintainability of the equipment.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A one-way valve balance cylinder, comprising a cylinder body (1), one end of which is connected to a cylinder body (1) seat, and the other end of which is connected to an end cap (3), a piston rod (4) is disposed inside the cylinder body (1), one end of the piston rod (4) extends out of the cylinder body (1) seat and is fixed to a slider, the other end of the piston rod (4) is located inside the cylinder body (1) and is connected to a piston plate (5), the piston plate (5) divides the inside of the cylinder body (1) into a buffer chamber (12) and a pressure chamber (13), a through hole (721) is provided on the side wall of the cylinder body (1) corresponding to the position of the pressure chamber, the inner diameter of the piston plate (5) is the same as the inner diameter of the cylinder body (1), and a sealing mechanism (6) is provided at the connection between the cylinder body (1) seat and the slider, characterized in that: An adjusting cylinder (7) is provided on the inner wall of the cylinder (1) near the sealing mechanism (6). A first step groove (71) is provided in the adjusting cylinder (7). A plug (72) is provided in the adjusting cylinder (7). The diameter of the plug (72) is the same as the inner diameter of the first step groove (71). A through hole (721) for the piston rod (4) to pass through is provided on the plug (72). Multiple vent holes (722) are provided on the plug (72). The vent holes (722) are used to connect the adjusting cylinder (7) and the buffer chamber (12). An exhaust pipe (73) extending out of the cylinder (1) is fixedly connected to the adjusting cylinder (7). A control valve is fixedly connected to the exhaust pipe (73).

2. The one-way valve balance cylinder according to claim 1, characterized in that: A return spring (74) is fitted on the piston rod (4), and the return spring (74) is located between the plug (72) and the sealing mechanism (6).

3. A one-way valve balance cylinder according to claim 1, characterized in that: The plug (72) has a second stepped groove (723) on its outer periphery, and a rubber ring (724) is fixedly connected in the second stepped groove (723).

4. A one-way valve balance cylinder according to claim 1, characterized in that: The vent hole (722) of the plug (72) is internally threaded with an air guide connector (75), and an air passage hole (751) is opened in the middle of the air guide connector (75).

5. A one-way valve balance cylinder according to claim 1, characterized in that: The cylinder body (1) has a relief hole (22) at the center for the piston rod (4) to pass through. The sealing mechanism (6) includes a sealing block (61) and a connecting block (62) that are engaged in the relief hole (22). The connecting block (62) and the sealing block (61) are fixed together with bolts. The sealing block (61) and the connecting block (62) both have sliding holes for the piston rod (4) to pass through. The sealing block (61) has a sealing groove (63) on the side near the sliding block in the middle. A sealing component (64) is provided in the sealing groove (63).

6. A one-way valve balance cylinder according to claim 5, characterized in that: The sealing assembly (64) includes a sealing gasket (641) that snaps into the sealing groove (63). The sealing gasket (641) has a circular hole (642) in the middle for the piston rod (4) to pass through. The inner wall of the circular hole (642) has an annular first sealing groove (643) and a second sealing groove (644). A skeleton oil seal (645) is provided in the first sealing groove (643), and an O-ring (646) is placed in the second sealing groove (644).

7. A one-way valve balance cylinder according to claim 1, characterized in that: The cylinder body (1) is detachably connected to the cylinder body (1) seat, and the cylinder body (1) is detachably connected to the end cover (3).

8. A one-way valve balance cylinder according to claim 7, characterized in that: Multiple screws (8) are fixedly connected to the cylinder body (1). The side wall of the cylinder body (1) is provided with mounting holes (11) for the screws (8) to pass through. The end cap (3) is provided with connecting holes (31) corresponding to the screws (8). The bolt passes through the mounting holes (11) and connecting holes (31) in sequence and is then threaded with a nut.

9. A one-way valve balance cylinder according to claim 1, characterized in that: The cylinder body (1) seat is fixedly connected with multiple positioning pins (21) at the position corresponding to the adjusting cylinder (7). The side wall of the adjusting cylinder (7) is fixedly connected with positioning holes (76). The end of the adjusting cylinder (7) away from the cylinder body (1) seat is provided with a insertion groove (77). The inner wall of the cylinder body (1) is provided with a positioning cylinder (78) for insertion into the insertion groove (77). The end of the positioning cylinder (78) away from the adjusting cylinder (7) abuts against the end cap (3).

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