Gear swing oil cylinder and using method and equipment thereof

Abstract

The invention relates to the technical field of hydraulic oil cylinders, and discloses a gear swing oil cylinder and a using method and equipment thereof, and the gear swing oil cylinder comprises a gear shaft, a movable rack, a bidirectional hydraulic cylinder body and a connecting oil pipe; two groups of hydraulic cylinders are arranged in the bidirectional hydraulic cylinder body, a movable rack is connected between the two groups of hydraulic cylinders, and the movable rack is hydraulically driven to move; the hydraulic cylinders on different sides, which are in up-and-down meshed connection with the gear shaft, are subjected to bidirectional circulating telescopic pushing, so that more uniform and powerful driving force can be provided for the rack, and reciprocating rotation of the gear shaft is realized by such reciprocating circulation, so that other mechanical parts are driven to work through the gear shaft, and precise operation of high-precision torque transmission can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic cylinders, and in particular to a gear swing cylinder and a use method and device thereof. Background Art

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has a simple structure and reliable operation. When it is used to achieve reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap, and the motion is smooth. Therefore, it is widely used in the hydraulic systems of various machines. The output force of the hydraulic cylinder is proportional to the effective area of ​​the piston and the pressure difference on both sides. The hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffer device and an exhaust device. The buffer device and the exhaust device depend on the specific application occasion, and other devices are indispensable. According to the structural form of the commonly used hydraulic cylinder, it can be divided into four types: piston type, plunger type, telescopic type, and swing type.

[0003] Among them, the swing hydraulic cylinder is widely used. It is generally used in situations with large torque and small rotation angle, and is applied to various mechanical equipment. The swing hydraulic cylinder can be divided into three types: rack and pinion type, vane type, and spiral type. The principle of the rack and pinion swing hydraulic cylinder is to convert the reciprocating motion of the hydraulic cylinder into the forward and reverse swinging rotation of the gear shaft through the rack to drive the gear, and at the same time convert the thrust of the reciprocating cylinder into the output torque of the gear shaft. Since the swing angle of the gear shaft is proportional to the length of the rack, the swing angle of the gear shaft can be selected arbitrarily and can be greater than 360°.

[0004] In the prior art, a rack and pinion cylinder includes a first cylinder barrel and a second cylinder barrel, wherein piston rods are respectively provided in the first cylinder barrel and the second cylinder barrel, a gear is provided between the first cylinder barrel and the second cylinder barrel, a rack is provided at the end of the piston rod, and the rack is meshed with the gear for transmission, each of the cylinders is provided with a transmission shaft, and a hinge point is provided on the gear, and the transmission shaft is hinged on the hinge point, and is inflated and deflated as the gear rotates.

[0005] However, the rack cylinder is only provided with a first cylinder and a second cylinder, which respectively drive the upper and lower racks to mesh with the gears for transmission. When a single hydraulic cylinder drives the rack, its output force and speed are limited, which is insufficient to meet the transmission requirements of high speed or high load. Summary of the invention

[0006] In order to overcome the technical problems existing in the above-mentioned prior art, the present invention provides a gear swing cylinder;

[0007] Another object of the present invention is to provide a method for using a gear swing cylinder;

[0008] Another object of the present invention is to provide a gear swing cylinder device.

[0009] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0010] A gear swing oil cylinder comprises: a gear shaft, a movable rack, a bidirectional hydraulic cylinder body and a connecting oil pipe; the bidirectional hydraulic cylinder body is provided with two groups of hydraulic cylinders, a movable rack is connected between the two groups of hydraulic cylinders and the movable rack is driven to move by hydraulic pressure;

[0011] The bidirectional hydraulic cylinder body includes an upper hydraulic cylinder body and a lower hydraulic cylinder body, and the upper and lower sides of the gear shaft are respectively connected to the upper and lower hydraulic cylinder bodies and meshed with movable racks; the connecting oil pipe includes a first connecting pipe and a second connecting pipe, and the first connecting pipe and the second connecting pipe connect the hydraulic cylinders of the two groups of bidirectional hydraulic cylinder bodies to the oil inlet and the oil return port, and are used to drive the movable racks meshed up and down on the two groups of gear shafts to move relative to each other.

[0012] Further, the upper hydraulic cylinder body includes a first oil cylinder and a second oil cylinder, and the lower hydraulic cylinder body includes a third oil cylinder and a fourth oil cylinder;

[0013] The first oil cylinder and the second oil cylinder are arranged at two ends of a set of bidirectional hydraulic cylinder bodies, and a movable rack is connected between the first oil cylinder and the second oil cylinder, and the movable rack is driven to move by hydraulic pressure;

[0014] The third oil cylinder and the fourth oil cylinder are arranged at two ends of another set of bidirectional hydraulic cylinder bodies, and a movable rack is connected between the third oil cylinder and the fourth oil cylinder, and the movable rack is driven to move by hydraulic pressure.

[0015] Furthermore, the first connecting pipe connects the first oil cylinder and the third oil cylinder to the oil inlet, and the second connecting pipe connects the second oil cylinder and the fourth oil cylinder to the oil return port.

[0016] Furthermore, the movable racks of the upper hydraulic cylinder body and the lower hydraulic cylinder body are parallel to each other and have opposite tooth surfaces, are respectively located on the upper and lower sides of the gear shaft and mesh with the gear shaft.

[0017] Furthermore, the annular outer side wall of the movable rack matches the inner diameter of the corresponding inner side wall of the cylinder port.

[0018] Furthermore, a one-way oil inlet valve is provided on the oil inlet, a differential pressure valve is provided on the oil return port, and an oil inlet pump is provided between the connecting oil pipe and the oil inlet;

[0019] The oil inlet can also be connected to the first connecting pipe through the first reversing valve, thereby driving the second oil cylinder and the fourth oil cylinder to move;

[0020] The oil return port can also be connected to the second connecting pipe through the second reversing valve, thereby driving the first oil cylinder and the third oil cylinder to move;

[0021] The oil inlet and the oil return port are both connected to the first connecting pipe and the second connecting pipe through a three-way joint, and the first reversing valve and the second reversing valve are arranged on the three-way joint;

[0022] A detachable connecting frame is provided between the upper hydraulic cylinder body and the lower hydraulic cylinder body, and the gear shaft is arranged on the connecting frame;

[0023] Furthermore, the connecting frame includes a plurality of connecting blocks, and the connecting blocks are spliced ​​together by bolts to form the connecting frame.

[0024] Preferably, the first reversing valve and the second reversing valve both comprise a driver and a valve plate, the valve plate being hinged in the three-way joint and driven to rotate by a driver, wherein the driver is an electric motor.

[0025] A method for using a gear swing cylinder, the method for using the gear swing cylinder comprising the following steps:

[0026] S1: When the first and third oil cylinders are compressed and the second and fourth oil cylinders are extended, the movable racks in the upper hydraulic cylinder body and the lower hydraulic cylinder body move relative to each other, so that the gear shaft meshing with the movable rack rotates counterclockwise;

[0027] S2: When the first oil cylinder and the third oil cylinder are compressed to the extreme, the valve core of the reversing valve pushes to realize the oil circuit switching, connecting the oil inlet to the second connecting pipe and the oil return port to the first connecting pipe;

[0028] S3: When the first and third oil cylinders are extended and the second and fourth oil cylinders are compressed, the movable racks in the upper hydraulic cylinder body and the lower hydraulic cylinder body move relative to each other, so that the gear shaft meshing with the movable rack rotates clockwise;

[0029] S4: When the second oil cylinder and the fourth oil cylinder are compressed to the extreme, the valve core of the reversing valve is pushed again to realize the oil circuit switching, connecting the oil inlet to the first connecting pipe and the oil return port to the second connecting pipe;

[0030] S5: Thus, the reciprocating cycle is realized, and the reciprocating rotation motion of the gear shaft is realized, so that other mechanical parts are driven to work through the gear shaft, and the precision operation of high-precision torque transmission can be realized.

[0031] Furthermore, the upper hydraulic cylinder body and the lower hydraulic cylinder body are respectively provided with an oil inlet hole and an oil outlet hole, the two oil inlet holes are connected to the oil inlet port through a connecting oil pipe, and the two oil outlet holes are connected to the oil return port through a connecting oil pipe. A one-way oil inlet valve is provided on the oil inlet, a differential pressure valve is provided on the oil return port, and an oil inlet pump is provided on the connecting oil.

[0032] A gear swing cylinder device, the device comprising a position limit and angle control device, the position limit and angle control device is connected to the gear swing cylinder, and is used to limit the maximum rotation angle of the swing shaft to prevent the swing from exceeding a set range;

[0033] The device also includes a hydraulic power system, which is connected to the gear swing cylinder. The hydraulic oil of the hydraulic power system drives the piston of the gear swing cylinder to move, thereby driving the gear to rotate.

[0034] The device also includes a feedback and control system, which is electrically connected to the gear swing cylinder and is used to receive signals provided by the limit and angle control device, and control the operation of the hydraulic pump, the first reversing valve and the second reversing valve of the hydraulic power system according to a set program to accurately adjust the swing angle and swing speed of the cylinder.

[0035] Furthermore, the hydraulic power system includes a hydraulic pump and a hydraulic pipeline, the hydraulic pump and the hydraulic pipeline are respectively connected to the gear swing cylinder, the output pressure and flow of the hydraulic pump are adjustable to control the swing speed and output torque, and the hydraulic pipeline is used to keep the hydraulic oil clean and stable in flow;

[0036] The swing shaft and the output device include a swing shaft and a connector or a flange; the swing shaft output shaft is connected to the gear swing cylinder, and drives the external machinery to swing at a specific angle through the rotational torque; the swing shaft can also be connected to an external device through a connector or a flange, such as a clamping device, a mechanical arm or a rotating platform, to transmit the rotational motion of the swing cylinder.

[0037] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0038] ① By moving the movable rack of the bidirectional hydraulic cylinder and meshing the connecting gear shaft, the efficiency of the entire transmission system and the accuracy of power transmission are improved;

[0039] The hydraulic cylinder generates linear telescopic motion through internal liquid pressure. This force acts directly on the movable rack, efficiently converting hydraulic energy into mechanical energy. The linear motion of the rack is then transformed into rotational motion through meshing with the gear shaft, thereby driving other mechanical components to work through the gear shaft. High-precision position control and torque transmission can be achieved, and it is suitable for operations requiring precision.

[0040] ② Connect the telescopic ends of the two sets of hydraulic cylinders to the two ends of the movable rack to reduce the risk of deflection or damage caused by excessive force on one side of the movable rack;

[0041] The telescopic ends of the two sets of hydraulic cylinders are connected to the two ends of the movable rack, and the movable rack is meshed and connected to the upper and lower gear shafts. The two sets of hydraulic cylinders work simultaneously, which can provide a more uniform and powerful driving force for the rack. Compared with a single hydraulic cylinder, it can greatly improve the stability of the system and its ability to carry heavy objects. The double-cylinder design can also absorb impact loads more efficiently, quickly adjust the rack position, ensure the continuity and stability of the gear transmission, and reduce vibration and noise.

[0042] ③By pushing the hydraulic cylinder that meshes the gear shaft up and down in both directions, the flexibility and functionality of the system can be enhanced;

[0043] By performing bidirectional extension and retraction of the hydraulic cylinders on different sides of the gear shaft that are meshed up and down, a more uniform and powerful driving force can be provided for the rack, and the impact load can be absorbed more efficiently, the rack position can be adjusted quickly, and the continuity and stability of the gear transmission can be ensured, and vibration and noise can be reduced; the hydraulic cylinders on the opposite side can also be used to perform bidirectional extension and retraction, so that the gear shaft can stably rotate forward or reverse, providing the equipment connected to the gear shaft with the ability to move forward, backward or in both directions, greatly enhancing the flexibility and functionality of the system.

[0044] ④ There are reversing valves at the oil inlet and oil return ports, which can make the gear shaft rotate forward or reverse;

[0045] A reversing valve with a three-way joint is provided at the oil inlet and oil return port of the swing cylinder. The reversing valve is connected to different hydraulic cylinders at both ends of the upper and lower movable racks respectively. The flow direction of the hydraulic oil can be changed by opening and closing the reversing valve, thereby controlling the extension or retraction of the hydraulic cylinders at both ends of the movable rack, realizing the forward or reverse movement of the movable rack, and making the gear shaft rotate forward or reverse to maintain the consistency of movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0047] Figure 1 It is a schematic diagram of the structure in which the first oil cylinder and the third oil cylinder of the gear swing oil cylinder are compressed;

[0048] Figure 2 It is a principle diagram of the first oil cylinder and the third oil cylinder of the gear swing oil cylinder being compressed;

[0049] Figure 3 It is a schematic diagram of the structure in which the second oil cylinder and the fourth oil cylinder of the gear swing oil cylinder are compressed;

[0050] Figure 4This is a schematic diagram of the second and fourth cylinders of the gear swing cylinder being compressed.

[0051] in,

[0052] 1. Gear shaft;

[0053] 2. Movable rack;

[0054] 3. Bidirectional hydraulic cylinder;

[0055] 4. Connecting oil pipe; 401. First connecting pipe; 402. Second connecting pipe;

[0056] 5. First oil cylinder;

[0057] 6. Second oil cylinder;

[0058] 7. The third oil cylinder;

[0059] 8. Fourth oil cylinder;

[0060] 9. Oil inlet;

[0061] 10. Oil return port;

[0062] 11. The first reversing valve;

[0063] 12. Second reversing valve;

[0064] 13. Connecting frame. DETAILED DESCRIPTION

[0065] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the described embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0066] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. "First", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0067] Example 1

[0068] like Figure 1-4 As shown, this embodiment discloses a gear swing oil cylinder, comprising: a gear shaft 1, a movable rack 2, a bidirectional hydraulic cylinder body 3 and a connecting oil pipe 4; two groups of hydraulic cylinders are arranged in the bidirectional hydraulic cylinder body 3, and a movable rack 2 is connected between the two groups of hydraulic cylinders, and the movable rack 2 is driven to move by hydraulic pressure;

[0069] The bidirectional hydraulic cylinder body 3 includes an upper hydraulic cylinder body and a lower hydraulic cylinder body, and the upper and lower sides of the gear shaft 1 are respectively connected to the upper and lower hydraulic cylinder bodies and meshed with a movable rack 2; the connecting oil pipe 4 includes a first connecting pipe 401 and a second connecting pipe 402, and the first connecting pipe 401 and the second connecting pipe 402 connect the hydraulic cylinders of the two groups of bidirectional hydraulic cylinder bodies 3 to the oil inlet 9 and the oil return port 10, and are used to drive the movable racks 2 meshed up and down in the two groups of gear shafts 1 to move relative to each other.

[0070] (like Figure 1 , Figure 2 As shown in the figure, when the first oil cylinder 5 and the third oil cylinder 7 are compressed and the second oil cylinder 6 and the fourth oil cylinder 8 are extended, the movable rack 2 in the upper hydraulic cylinder body and the lower hydraulic cylinder body moves relative to each other, so that the gear shaft 1 meshing with the movable rack 2 rotates counterclockwise; when the first oil cylinder 5 and the third oil cylinder 7 are compressed to the extreme, the valve core of the reversing valve pushes to realize the oil circuit switching, so that the oil inlet 9 is connected to the second connecting pipe 402 and the oil return port 10 is connected to the first connecting pipe 401;

[0071] (like Figure 3 , Figure 4As shown in the figure, when the first oil cylinder 5 and the third oil cylinder 7 are extended and the second oil cylinder 6 and the fourth oil cylinder 8 are compressed, the movable rack 2 in the upper hydraulic cylinder body and the lower hydraulic cylinder body moves relative to each other, so that the gear shaft 1 meshing with the movable rack 2 rotates clockwise; when the second oil cylinder 6 and the fourth oil cylinder 8 are compressed to the extreme, the valve core of the reversing valve is pushed again to realize the oil circuit switching, so that the oil inlet 9 is connected to the first connecting pipe 401 and the oil return port 10 is connected to the second connecting pipe 402;

[0072] Thus, the reciprocating cycle is realized, and the gear shaft 1 is made to rotate back and forth, so that other mechanical parts are driven to work through the gear shaft 1, and the precision operation of high-precision torque transmission can be realized.

[0073] As a specific implementation, the upper hydraulic cylinder body includes a first oil cylinder 5 and a second oil cylinder 6, and the lower hydraulic cylinder body includes a third oil cylinder 7 and a fourth oil cylinder 8;

[0074] The first oil cylinder 5 and the second oil cylinder 6 are arranged at two ends of a set of bidirectional hydraulic cylinder bodies 3, and a movable rack 2 is connected between the first oil cylinder 5 and the second oil cylinder 6, and the movable rack 2 is driven by hydraulic pressure to move;

[0075] The third oil cylinder 7 and the fourth oil cylinder 8 are arranged at two ends of another set of bidirectional hydraulic cylinder bodies 3, and a movable rack 2 is connected between the third oil cylinder 7 and the fourth oil cylinder 8, and the movable rack 2 is driven by hydraulic pressure to move;

[0076] The first connecting pipe 401 connects the first oil cylinder 5 and the third oil cylinder 7 with the oil inlet 9 , and the second connecting pipe 402 connects the second oil cylinder 6 and the fourth oil cylinder 8 with the oil return port 10 .

[0077] Specifically, the efficiency of the entire transmission system and the accuracy of force transmission are improved by moving the movable rack 2 of the bidirectional hydraulic cylinder body 3 and meshing it with the gear shaft 1; the hydraulic cylinder generates a linear telescopic motion through the internal liquid pressure, and this force directly acts on the movable rack 2, efficiently converting the hydraulic energy into mechanical energy; the linear motion of the movable rack 2 is then transformed into rotational motion through meshing with the gear shaft 1, thereby driving other mechanical components to work through the gear shaft 1, thereby achieving high-precision position control and torque transmission, which is suitable for operations requiring precision.

[0078] Specifically, the telescopic ends of the two groups of hydraulic cylinders are connected to the two ends of the movable rack 2, and the movable rack 2 is meshed and connected to the upper and lower gear shaft 1. The two groups of hydraulic cylinders work simultaneously, which can provide a more uniform and powerful driving force for the movable rack 2. Compared with a single hydraulic cylinder, the stability of the system and the ability to carry heavy objects can be greatly improved; the double-cylinder design can also absorb impact loads more efficiently, quickly adjust the position of the movable rack 2, ensure the continuity and stability of the transmission of the gear shaft 1, reduce vibration and noise, and reduce the risk of deflection or damage caused by excessive force on one side of the movable rack 2.

[0079] Specifically, by pushing the hydraulic cylinders that mesh with the gear shaft 1 up and down in both directions, the flexibility and functionality of the system can be enhanced; by pushing the hydraulic cylinders on different sides of the two-way hydraulic cylinder body 3 that mesh with the gear shaft 1 up and down in both directions, a more uniform and powerful driving force can be provided for the movable rack 2, and the impact load can be absorbed more efficiently, and the position of the movable rack 2 can be adjusted quickly to ensure the continuity and stability of the transmission of the gear shaft 1 and reduce vibration and noise; the gear shaft 1 can also be pushed in both directions by the hydraulic cylinders on the opposite side, so that the gear shaft 1 can be stably rotated forward or reverse, providing the equipment connected to the gear shaft 1 with the ability to move forward, backward or in both directions, greatly enhancing the flexibility and functionality of the system.

[0080] As a specific implementation, the movable racks 2 of the upper hydraulic cylinder body and the lower hydraulic cylinder body are parallel to each other and have opposite tooth surfaces, are respectively located on the upper and lower sides of the gear shaft 1 and mesh with the gear shaft 1;

[0081] The annular outer side wall of the movable rack 2 matches the inner diameter of the inner side wall of the corresponding cylinder port.

[0082] Specifically, the movable racks 2 of the upper hydraulic cylinder body and the lower hydraulic cylinder body mesh with the middle gear shaft 1, which can ensure that the two hydraulic cylinders maintain precise synchronous movement during extension and retraction, and can evenly distribute the driving force to avoid efficiency loss and mechanical wear caused by eccentric loading or asynchronism;

[0083] The design in which the annular outer wall of the movable rack 2 matches the inner diameter of the inner wall of the corresponding cylinder port can be easily integrated into a limited space, making the entire device more compact and saving installation space, while also increasing the rigidity and stability of the system.

[0084] As a specific implementation, a one-way oil inlet valve is provided on the oil inlet 9 , a differential pressure valve is provided on the oil return port 10 , and an oil inlet pump is provided between the connecting oil pipe 4 and the oil inlet 9 .

[0085] Specifically, the one-way oil inlet valve ensures that the hydraulic oil can only flow from the oil pump to the oil inlet 9 of the hydraulic cylinder, but not flow back, which helps to maintain the pressure stability in the swing cylinder system; it can effectively prevent the impact of the sudden reverse flow of high-pressure oil on the system when the swing cylinder system is turned off or the internal pump stops working, thereby protecting the entire hydraulic system from damage.

[0086] Example 2

[0087] like Figure 1-4 As shown, this embodiment discloses a gear swing oil cylinder, comprising: a gear shaft 1, a movable rack 2, a bidirectional hydraulic cylinder body 3 and a connecting oil pipe 4; two groups of hydraulic cylinders are arranged in the bidirectional hydraulic cylinder body 3, and a movable rack 2 is connected between the two groups of hydraulic cylinders, and the movable rack 2 is driven to move by hydraulic pressure;

[0088] The bidirectional hydraulic cylinder body 3 includes an upper hydraulic cylinder body and a lower hydraulic cylinder body, and the upper and lower sides of the gear shaft 1 are respectively connected to the upper and lower hydraulic cylinder bodies and meshed with a movable rack 2; the connecting oil pipe 4 includes a first connecting pipe 401 and a second connecting pipe 402, and the first connecting pipe 401 and the second connecting pipe 402 connect the hydraulic cylinders of the two groups of bidirectional hydraulic cylinder bodies 3 to the oil inlet 9 and the oil return port 10, and are used to drive the movable racks 2 meshed up and down in the two groups of gear shafts 1 to move relative to each other.

[0089] As a specific implementation, the oil inlet 9 can also be connected to the first connecting pipe 401 through the first reversing valve 11, thereby driving the second oil cylinder 6 and the fourth oil cylinder 8 to move;

[0090] The oil return port 10 can also be connected to the second connecting pipe 402 through the second reversing valve 12, thereby driving the first oil cylinder 5 and the third oil cylinder 7 to move;

[0091] The oil inlet 9 and the oil return port 10 are both connected to the first connecting pipe 401 and the second connecting pipe 402 through a three-way joint, and the first reversing valve 11 and the second reversing valve 12 are arranged on the three-way joint.

[0092] Specifically, a first reversing valve 11 and a second reversing valve 12 with three-way joints are provided at the oil inlet 9 and the oil return port 10 of the swing cylinder. The reversing valves are respectively connected to different cylinders at both ends of the upper and lower movable racks 2. The flow direction of the hydraulic oil can be changed by opening and closing the reversing valves, thereby controlling the extension or retraction of the hydraulic cylinders at both ends of the movable rack 2, realizing the forward or reverse movement of the movable rack 2, and making the gear shaft 1 rotate forward or reverse to maintain the consistency of movement.

[0093] Specifically, when it is necessary to change the flow direction of the hydraulic oil, the three-way joint of the reversing valve is controlled to be connected, so as to quickly switch the oil circuit, thereby changing the oil inlet 9 to flow into the oil cylinder in the opposite direction of the port 3 of the two-way hydraulic cylinder body, so that the gear shaft 1 rotates forward or reversely; in an emergency, the action is quickly disconnected or switched to protect the hydraulic components from damage and extend the service life of the swing cylinder.

[0094] As a specific implementation, a detachable connecting frame 13 is provided between the upper hydraulic cylinder body and the lower hydraulic cylinder body, and the gear shaft 1 is provided on the connecting frame 13;

[0095] The connecting frame 13 includes a plurality of connecting blocks, and the connecting blocks are spliced ​​together by bolts to form the connecting frame 13 .

[0096] Specifically, the connecting frame 13, as an integral supporting structure, not only carries the gear shaft 1, but also provides a stable connection foundation for the hydraulic cylinder body, ensuring the stable operation of the system under high-load working conditions. The connecting blocks are fixed with bolts to ensure the firmness of the connection;

[0097] By splicing multiple groups of connecting blocks, the layout and spacing of the hydraulic cylinder body can be adjusted according to actual application requirements to achieve customized system configuration, thereby enhancing the adaptability and scalability of the system.

[0098] Example 3

[0099] A method for using a gear swing cylinder, the method for using the gear swing cylinder comprising the following steps:

[0100] S1: When the first oil cylinder 5 and the third oil cylinder 7 are compressed and the second oil cylinder 6 and the fourth oil cylinder 8 are extended, the movable rack 2 in the upper hydraulic cylinder body and the lower hydraulic cylinder body moves relative to each other, so that the gear shaft 1 meshing with the movable rack 2 rotates counterclockwise;

[0101] S2: When the first oil cylinder 5 and the third oil cylinder 7 are compressed to the extreme, the valve core of the reversing valve pushes to realize the oil circuit switching, connecting the oil inlet 9 to the second connecting pipe 402 and the oil return port 10 to the first connecting pipe 401;

[0102] S3: When the first oil cylinder 5 and the third oil cylinder 7 are extended, and the second oil cylinder 6 and the fourth oil cylinder 8 are compressed, the movable rack 2 in the upper hydraulic cylinder body and the lower hydraulic cylinder body moves relative to each other, so that the gear shaft 1 meshing with the movable rack 2 rotates clockwise;

[0103] S4: When the second oil cylinder 6 and the fourth oil cylinder 8 are compressed to the extreme, the valve core of the reversing valve is pushed again to realize the oil circuit switching, connecting the oil inlet 9 to the first connecting pipe 401 and the oil return port 10 to the second connecting pipe 402;

[0104] S5: Thus, the reciprocating cycle is carried out to realize the reciprocating rotation motion of the gear shaft 1, thereby driving other mechanical parts to work through the gear shaft 1, and realizing the precise operation of high-precision torque transmission.

[0105] Specifically, the precise rotation control of the gear shaft is achieved through the coordinated compression and extension of multiple oil cylinders. The meshing mechanism of the movable rack and the gear shaft enables each displacement of the oil cylinder to be accurately converted into the rotation movement of the gear shaft, thereby achieving high-precision torque transmission, which is suitable for scenarios that require precise angle control, such as industrial automation equipment, precision rotation operations in mechanical processing, etc.

[0106] In the operation of the gear swing cylinder, when the cylinder is compressed or stretched to the extreme, the valve core of the reversing valve automatically switches the oil circuit. This automatic reversing design not only improves the accuracy of the reversing, but also effectively avoids the mechanical shock and vibration that may occur during the reversing process, ensuring the smooth operation of the system and extending the service life of mechanical components.

[0107] As a specific implementation manner, the upper hydraulic cylinder body and the lower hydraulic cylinder body are respectively provided with an oil inlet hole and an oil outlet hole. The two oil inlet holes are connected to the oil inlet port 9 through a connecting oil pipe, and the two oil outlet holes are connected to the oil return port 10 through a connecting oil pipe. A one-way oil inlet valve is provided on the oil inlet port 9, a differential pressure valve is provided on the oil return port 10, and an oil inlet pump is provided on the connecting oil.

[0108] Specifically, the upper hydraulic cylinder body and the lower hydraulic cylinder body are respectively provided with an oil inlet hole and an oil outlet hole, so that the hydraulic oil can enter and flow out of different cavities at the same time. This dual-chamber structure connects the oil inlet and the oil return port through a connecting oil pipe to ensure that the hydraulic oil maintains continuous supply and reflux during the working cycle; through the action of the oil inlet pump, the hydraulic oil is pressed from the oil inlet to the inside of the oil cylinder, enters the hydraulic cylinder body through the oil inlet hole, pushes the piston to work, and then flows back to the oil return port through the oil outlet hole. This design ensures the stable circulation of the hydraulic oil in the system and maintains the normal operation of the hydraulic cylinder body.

[0109] Example 4

[0110] A gear swing oil cylinder device, the device comprises a limit and angle control device, the limit and angle control device is connected to the gear swing oil cylinder, and is used to limit the maximum rotation angle of the swing shaft to prevent the swing from exceeding the set range;

[0111] The equipment also includes a hydraulic power system, which is connected to the gear swing cylinder. The hydraulic oil of the hydraulic power system drives the piston of the gear swing cylinder to move, thereby driving the gear to rotate.

[0112] The equipment also includes a feedback and control system, which is electrically connected to the gear swing cylinder and is used to receive signals provided by the limit and angle control device, and control the operation of the hydraulic pump, the first reversing valve 11 and the second reversing valve 12 of the hydraulic power system according to a set program to accurately adjust the swing angle and swing speed of the cylinder.

[0113] Specifically, through the limit and angle control device, the equipment can accurately limit the maximum rotation angle of the swing shaft to ensure that the swing action of the gear swing cylinder is always within the set range; angle control is very suitable for applications with strict angle requirements, such as positioning, clamping or workpiece rotation operations in industrial machinery, to avoid excessive or insufficient swing;

[0114] The equipment achieves precise angle control and swing limitation through the limit and angle control device, avoiding over-limit operation and improving safety; it provides powerful power output through the hydraulic power system, ensuring efficient energy transfer and stable operation of the system; in addition, the feedback and control system works in coordination with the hydraulic pump and reversing valve to achieve automatic angle and speed adjustment, improving the equipment's automation level, work efficiency and operational accuracy, and is suitable for various industrial machinery applications that require precise control.

[0115] As a specific implementation, the hydraulic power system includes a hydraulic pump and a hydraulic pipeline, the hydraulic pump and the hydraulic pipeline are respectively connected to the gear swing cylinder, the output pressure and flow of the hydraulic pump are adjustable to control the swing speed and output torque, and the hydraulic pipeline is used to keep the hydraulic oil clean and stable in flow;

[0116] The swing shaft and the output device include a swing shaft and a connector or a flange; the swing shaft output shaft is connected to the gear swing cylinder, and drives the external machinery to swing at a specific angle through the rotational torque; the swing shaft can also be connected to an external device through a connector or a flange, such as a clamping device, a mechanical arm or a rotating platform, to transmit the rotational motion of the swing cylinder.

[0117] Specifically, the hydraulic pump output pressure and flow rate in the hydraulic power system are adjustable. This function enables the system to flexibly adjust the swing speed and output torque to meet the needs of different working conditions. Whether high-speed operation or high torque output is required, the hydraulic system can accurately meet the requirements and is suitable for mechanical control in a variety of industrial scenarios.

[0118] The hydraulic power system drives the gear swing cylinder through a stable flow of hydraulic oil to ensure the movement accuracy and continuity of the swing axis. By adjusting the output flow and pressure of the hydraulic pump, it can provide stable power output under different load conditions and maintain the efficient operation of the entire mechanical system;

[0119] The equipment provides efficient and stable hydraulic drive capabilities through the hydraulic power system, and combines the swing shaft with the output device to achieve high-precision angle control and torque transmission; its multi-functional connection design expands the applicability of the equipment, enabling it to adapt to various industrial scenarios, while providing flexible and efficient operating performance through precise adjustment of flow and pressure. In addition, the stability and reliability of the system have been significantly improved, the equipment has a long service life, and can efficiently cope with a variety of load conditions.

[0120] How it works

[0121] When the first oil cylinder 5 and the third oil cylinder 7 are compressed, and the second oil cylinder 6 and the fourth oil cylinder 8 are extended, the movable rack 2 in the upper hydraulic cylinder body and the lower hydraulic cylinder body moves relative to each other, so that the gear shaft 1 meshing with the movable rack 2 rotates counterclockwise; when the first oil cylinder 5 and the third oil cylinder 7 are compressed to the extreme, the valve core of the reversing valve pushes to realize the oil circuit switching, so that the oil inlet 9 is connected to the second connecting pipe 402, and the oil return port 10 is connected to the first connecting pipe 401;

[0122] When the first oil cylinder 5 and the third oil cylinder 7 are extended, and the second oil cylinder 6 and the fourth oil cylinder 8 are compressed, the movable rack 2 in the upper hydraulic cylinder body and the lower hydraulic cylinder body moves relative to each other, so that the gear shaft 1 meshing with the movable rack 2 rotates clockwise; when the second oil cylinder 6 and the fourth oil cylinder 8 are compressed to the extreme, the valve core of the reversing valve is pushed again to realize the oil circuit switching, so that the oil inlet 9 is connected to the first connecting pipe 401, and the oil return port 10 is connected to the second connecting pipe 402;

[0123] Thus, the reciprocating cycle is realized, and the gear shaft 1 is made to rotate back and forth, so that other mechanical parts are driven to work through the gear shaft 1, and the precision operation of high-precision torque transmission can be realized.

[0124] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A gear swing cylinder, characterized in that: include: A gear shaft (1), a movable rack (2), a bidirectional hydraulic cylinder body (3) and a connecting oil pipe (4); the bidirectional hydraulic cylinder body (3) is provided with two groups of hydraulic cylinders, a movable rack (2) is connected between the two groups of hydraulic cylinders, and the movable rack (2) is driven by hydraulic pressure to move; The bidirectional hydraulic cylinder body (3) comprises an upper hydraulic cylinder body and a lower hydraulic cylinder body, and the upper and lower sides of the gear shaft (1) are respectively connected to the upper and lower hydraulic cylinder bodies and meshed with a movable rack (2); the connecting oil pipe (4) comprises a first connecting pipe (401) and a second connecting pipe (402), and the first connecting pipe (401) and the second connecting pipe (402) connect the hydraulic cylinders of the two groups of bidirectional hydraulic cylinder bodies (3) to the oil inlet (9) and the oil return port (10), and are used to drive the movable racks (2) meshed with the two groups of gear shafts (1) to move relative to each other.

2. The gear swing cylinder according to claim 1, characterized in that: The upper hydraulic cylinder body comprises a first oil cylinder (5) and a second oil cylinder (6), and the lower hydraulic cylinder body comprises a third oil cylinder (7) and a fourth oil cylinder (8); The first oil cylinder (5) and the second oil cylinder (6) are arranged at two ends of a set of bidirectional hydraulic cylinder bodies (3); a movable rack (2) is connected between the first oil cylinder (5) and the second oil cylinder (6), and the movable rack (2) is driven to move by hydraulic pressure; The third oil cylinder (7) and the fourth oil cylinder (8) are arranged at two ends of another set of bidirectional hydraulic cylinder bodies (3); a movable rack (2) is connected between the third oil cylinder (7) and the fourth oil cylinder (8), and the movable rack (2) is driven to move by hydraulic pressure.

3. The gear swing cylinder according to claim 2, characterized in that: The first connecting pipe (401) connects the first oil cylinder (5) and the third oil cylinder (7) to the oil inlet (9), and the second connecting pipe (402) connects the second oil cylinder (6) and the fourth oil cylinder (8) to the oil return port (10).

4. The gear swing cylinder according to claim 3, characterized in that: The movable racks (2) of the upper hydraulic cylinder body and the lower hydraulic cylinder body are parallel to each other and have opposite tooth surfaces, are respectively located on the upper and lower sides of the gear shaft (1) and mesh with the gear shaft (1).

5. The gear swing cylinder according to claim 4, characterized in that: The annular outer side wall of the movable rack (2) matches the inner diameter of the inner side wall of the corresponding cylinder port.

6. The gear swing cylinder according to claim 5, characterized in that: The oil inlet (9) is provided with a one-way oil inlet valve, the oil return port (10) is provided with a differential pressure valve, and an oil inlet pump is provided between the connecting oil pipe (4) and the oil inlet (9); The oil inlet (9) can also be connected to the first connecting pipe (401) through the first reversing valve (11), thereby driving the second oil cylinder (6) and the fourth oil cylinder (8) to move; The oil return port (10) can also be connected to the second connecting pipe (402) via the second reversing valve (12), thereby driving the first oil cylinder (5) and the third oil cylinder (7) to move; The oil inlet (9) and the oil return port (10) are both connected to the first connecting pipe (401) and the second connecting pipe (402) via a three-way joint, and the first reversing valve (11) and the second reversing valve (12) are arranged on the three-way joint; A detachable connecting frame (13) is provided between the upper hydraulic cylinder body and the lower hydraulic cylinder body, and the gear shaft (1) is arranged on the connecting frame (13); The connecting frame (13) comprises a plurality of connecting blocks, and the connecting blocks are spliced ​​together by bolts to form the connecting frame (13).

7. A method of using the gear swing cylinder according to claim 6, characterized in that: The method of using the gear swing cylinder includes the following: S1: When the first oil cylinder (5) and the third oil cylinder (7) are compressed and the second oil cylinder (6) and the fourth oil cylinder (8) are extended, the movable rack (2) in the upper hydraulic cylinder body and the lower hydraulic cylinder body are relatively moved, so that the gear shaft (1) meshing with the movable rack (2) rotates counterclockwise; S2: When the first oil cylinder (5) and the third oil cylinder (7) are compressed to the extreme, the valve core of the reversing valve pushes to realize oil circuit switching, connecting the oil inlet (9) to the second connecting pipe (402) and the oil return port (10) to the first connecting pipe (401); S3: When the first oil cylinder (5) and the third oil cylinder (7) are extended and the second oil cylinder (6) and the fourth oil cylinder (8) are compressed, the movable rack (2) in the upper hydraulic cylinder body and the lower hydraulic cylinder body are relatively moved, so that the gear shaft (1) meshing with the movable rack (2) rotates clockwise; S4: When the second oil cylinder (6) and the fourth oil cylinder (8) are compressed to the extreme, the valve core of the reversing valve is pushed again to realize the oil circuit switching, so that the oil inlet (9) is connected to the first connecting pipe (401) and the oil return port (10) is connected to the second connecting pipe (402); S5: Thus, the reciprocating cycle is performed to realize the reciprocating rotation of the gear shaft (1), thereby driving other mechanical parts to work through the gear shaft (1), thereby realizing the precise operation of high-precision torque transmission.

8. The method for using the gear swing cylinder according to claim 7, characterized in that: The upper hydraulic cylinder body and the lower hydraulic cylinder body are respectively provided with an oil inlet hole and an oil outlet hole, the two oil inlet holes are connected to the oil inlet port (9) through a connecting oil pipe, and the two oil outlet holes are connected to the oil return port (10) through a connecting oil pipe, the oil inlet port (9) is provided with a one-way oil inlet valve, the oil return port (10) is provided with a differential pressure valve, and the connecting oil is provided with an oil inlet pump.

9. A device using the gear swing cylinder according to claim 6, characterized in that: The device includes a position limit and angle control device, which is connected to the gear swing cylinder and is used to limit the maximum rotation angle of the swing shaft to prevent the swing from exceeding the set range; The device also includes a hydraulic power system, which is connected to the gear swing cylinder. The hydraulic oil of the hydraulic power system drives the piston of the gear swing cylinder to move, thereby driving the gear to rotate. The device also includes a feedback and control system, which is electrically connected to the gear swing cylinder and is used to receive signals provided by the limit and angle control device, and control the operation of the hydraulic pump, the first reversing valve (11) and the second reversing valve (12) of the hydraulic power system according to a set program to accurately adjust the swing angle and swing speed of the cylinder.

10. The gear swing cylinder device according to claim 9, characterized in that: The hydraulic power system includes a hydraulic pump and a hydraulic pipeline, the hydraulic pump and the hydraulic pipeline are respectively connected to the gear swing cylinder, the output pressure and flow of the hydraulic pump are adjustable to control the swing speed and output torque, and the hydraulic pipeline is used to keep the hydraulic oil clean and stable in flow; The swing shaft and the output device include a swing shaft and a connector or a flange; the swing shaft output shaft is connected to the gear swing cylinder, and drives the external machinery to swing at a specific angle through the rotational torque; the swing shaft can also be connected to an external device through a connector or a flange, such as a clamping device, a mechanical arm or a rotating platform, to transmit the rotational motion of the swing cylinder.

Images