High performance integrated hydraulic cylinder

Abstract

The application relates to a high-performance integrated hydraulic cylinder, belonging to the technical field of hydraulic cylinders, which comprises a middle cylinder body, a left cylinder body fixedly arranged at one end of the middle cylinder body, and a right cylinder body arranged at the other end of the middle cylinder body; an oil path assembly is arranged on the middle cylinder body, the left cylinder body and the right cylinder body; the oil path assembly is used for making hydraulic oil flow in the middle cylinder body, the left cylinder body and the right cylinder body; a partition plate is arranged in the middle cylinder body; a left piston head is slidably arranged in the left cylinder body; a right piston head is slidably arranged in the right cylinder body; a left piston rod is fixedly arranged on one end of the left piston head away from the partition plate; the left piston rod penetrates through the left cylinder body; a right piston rod is fixedly arranged on one end of the right piston head away from the partition plate; and the right piston rod penetrates through the right cylinder body. The application has the effects of making the hydraulic cylinder suitable for various working conditions and expanding the use range of the hydraulic cylinder.

Description

Technical Field

[0001] This invention relates to the field of hydraulic cylinder technology, and in particular to a high-performance integrated hydraulic cylinder. Background Technology

[0002] A hydraulic cylinder is an actuator that converts hydraulic energy into mechanical energy. By filling its internal cavity with a certain amount of liquid, the hydraulic cylinder creates a piston with a certain pressure, which in turn generates working pressure and pushes the piston rod to drive the driven component. When reciprocating motion is achieved by a hydraulic cylinder, there is no need to install a speed reduction device and there is no transmission backlash, making the reciprocating motion smooth.

[0003] A related technology, Chinese patent CN204284064U, provides an integrated hydraulic cylinder, which includes a cylinder body with rodless and rod-type oil ports. A piston slides within the cylinder body, and a piston rod is fixedly mounted on the piston. The piston rod passes through one end of the cylinder body, and a secondary cylinder is connected to the other end of the cylinder body. The secondary cylinder has an air port, an oil inlet, and an oil outlet. A cylinder head is fixedly mounted at the end of the secondary cylinder away from the cylinder body. A guide sleeve is installed inside the secondary cylinder, and a support rod slides within the guide sleeve. The support rod is fixedly connected to the piston. A front spring seat and a rear spring seat are installed between the outer wall of the guide sleeve and the inner wall of the secondary cylinder, and a return spring is installed between the front and rear spring seats. Hydraulic oil acts on the piston, causing the piston to move the piston rod along the length of the cylinder body, thereby causing the piston rod to act on a driving component.

[0004] In the process of developing this application, the inventors discovered that the technology has at least the following problems: the piston rod can only act on one side of the cylinder body. When the on-site working conditions require reciprocating motion in multiple directions, since the applicable working conditions of a single hydraulic cylinder are limited, it is necessary to coordinate with multiple hydraulic cylinders to cooperate. Summary of the Invention

[0005] In order to make hydraulic cylinders suitable for various working conditions and expand their application range, this application provides a high-performance integrated hydraulic cylinder.

[0006] The high-performance integrated hydraulic cylinder provided in this application adopts the following technical solution:

[0007] A high-performance integrated hydraulic cylinder includes a central cylinder body, a left cylinder body fixedly disposed at one end of the central cylinder body, and a right cylinder body disposed at the other end of the central cylinder body. An oil circuit assembly is shared on the central cylinder body, the left cylinder body, and the right cylinder body, allowing hydraulic oil to flow within them. A partition plate is disposed within the central cylinder body. A left piston head is slidably disposed within the left cylinder body, and a right piston head is slidably disposed within the right cylinder body. A left piston rod is fixedly disposed on the end of the left piston head away from the partition plate, penetrating the left cylinder body. A right piston rod is fixedly disposed on the end of the right piston head away from the partition plate, penetrating the right cylinder body.

[0008] By adopting the above technical solution, when the extension and retraction of the left and right piston rods do not affect each other, the hydraulic circuit assembly does not connect the left and right cylinder blocks. The hydraulic circuit assembly controls the hydraulic oil acting between the left piston head and the partition plate, causing the left piston head to drive the left piston rod in reciprocating motion. Similarly, the hydraulic circuit assembly controls the hydraulic oil acting between the right piston head and the partition plate, causing the right piston head to drive the right piston rod in reciprocating motion. When the left and right piston rods need to extend and retract synchronously, the hydraulic circuit assembly connects the side of the left piston head away from the partition plate to the side of the right piston head facing the partition plate, and connects the side of the right piston head away from the partition plate to the side of the left piston head facing the partition plate. The piston heads are interconnected on the side facing the partition plate. When the left piston head approaches the partition plate, the hydraulic oil between the left piston head and the partition plate is squeezed to the side of the right piston head away from the partition plate, causing the right piston head to move towards the partition plate. Conversely, when the left piston head moves away from the partition plate, the hydraulic oil on the side of the left piston head away from the partition plate is squeezed to the side between the right piston head and the partition plate, causing the right piston head to move away from the partition plate. Similarly, when the right piston head approaches the partition plate, the hydraulic oil between the right piston head and the partition plate is squeezed to the side of the left piston head away from the partition plate, causing the left piston head to move towards the partition plate. And when the right piston head moves away from the partition plate, the hydraulic oil on the side of the right piston head away from the partition plate... Hydraulic oil is forced between the left piston head and the partition plate, causing the left piston head to move away from the partition plate. When the left and right piston rods need to extend and retract alternately, the hydraulic circuit assembly connects the side of the left piston head away from the partition plate to the side of the right piston head away from the partition plate, and also connects the side of the right piston head facing the partition plate to the side of the left piston head facing the partition plate. When the left piston head approaches the partition plate, the hydraulic oil between the left piston head and the partition plate is forced to the side of the right piston head and the partition plate, causing the right piston head to move away from the partition plate. When the left piston head moves away from the partition plate, the hydraulic oil on the side of the left piston head away from the partition plate is forced... The hydraulic cylinder moves towards the partition plate, causing the right piston head to move closer to it. As the right piston head moves closer to the partition plate, the hydraulic oil between the right piston head and the partition plate is squeezed to the left piston head and the partition plate, causing the left piston head to move away from the partition plate. Conversely, as the right piston head moves away from the partition plate, the hydraulic oil on the side of the right piston head away from the partition plate is squeezed to the side of the left piston head away from the partition plate, causing the left piston head to move closer to the partition plate. Thus, when the on-site working conditions require reciprocating motion in opposite directions, a single hydraulic oil can be used, making the hydraulic cylinder suitable for various working conditions and expanding its application range.

[0009] Preferably, the intermediate cylinder body includes an internally disposed intermediate cylinder, a left cylinder, and a right cylinder. The left cylinder is fixedly connected to the left cylinder, and the right cylinder is fixedly connected to the right cylinder. One end of the intermediate cylinder is detachably connected to the left cylinder, and the other end of the intermediate cylinder is detachably connected to the right cylinder. A left limiting ring plate is disposed inside the intermediate cylinder near the left cylinder, and a right limiting ring plate is disposed inside the intermediate cylinder near the right cylinder. The partition plate is slidably disposed between the left limiting ring plate and the right limiting ring plate.

[0010] By adopting the above technical solution, the partition plate is installed between the left limiting ring plate and the right limiting ring plate. The left limiting ring plate and the right limiting ring plate restrict the range of motion of the partition plate, the left piston head and the right piston head, thereby facilitating the installation and connection of the oil circuit assembly according to the range of motion of the left piston head, the right piston head and the partition plate.

[0011] Preferably, each of the partition plates is fixedly provided with an abutment rod, one of which is used to abut against the left piston head at the end away from the partition plate, and the other of which is used to abut against the right piston head at the end away from the partition plate. A telescopic spring is sleeved on each abutment rod, and one end of the telescopic spring is fixedly connected to the partition plate, one of which is fixedly connected to the left piston head at the end away from the partition plate, and the other of which is fixedly connected to the right piston head at the end away from the partition plate.

[0012] By adopting the above technical solution, both the left piston head and the right piston head are connected to the partition plate through telescopic springs. During the movement of the left piston head, the right piston head, and the partition plate, the telescopic springs act as a buffer.

[0013] Preferably, the oil circuit assembly includes an oil inlet pipe and an oil outlet pipe, both of which are connected to the left cylinder. An oil inlet check valve is provided on the oil inlet pipe, and an oil outlet check valve is provided on the oil outlet pipe.

[0014] By adopting the above technical solution, the left cylinder on the intermediate cylinder block realizes the entry and discharge of hydraulic oil through the oil inlet pipe 1 and the oil outlet pipe 1, thereby allowing the hydraulic oil to enter or exit between the left piston head and the partition plate.

[0015] Preferably, the oil circuit assembly further includes an oil inlet pipe II and an oil outlet pipe II, both of which are connected to the right cylinder. An oil inlet check valve II is provided on the oil inlet pipe II, and an oil outlet check valve II is provided on the oil outlet pipe II.

[0016] By adopting the above technical solution, the right cylinder on the intermediate cylinder block realizes the entry and discharge of hydraulic oil through the second oil inlet pipe and the second oil outlet pipe, thereby allowing the hydraulic oil to enter or exit between the right piston head and the partition plate.

[0017] Preferably, the oil circuit assembly further includes an oil inlet pipe three and an oil outlet pipe three, both of which are connected to the left cylinder block. An oil inlet check valve three is provided on the oil inlet pipe three, and an oil outlet check valve three is provided on the oil outlet pipe three.

[0018] By adopting the above technical solution, the left cylinder block realizes the entry and discharge of hydraulic oil through the oil inlet pipe three and the oil outlet pipe three, thereby allowing the hydraulic oil to enter or discharge the left piston head away from the partition plate.

[0019] Preferably, the oil circuit assembly further includes an oil inlet pipe four and an oil outlet pipe four, both of which are connected to the right cylinder block. An oil inlet check valve four is provided on the oil inlet pipe four, and an oil outlet check valve four is provided on the oil outlet pipe four.

[0020] By adopting the above technical solution, the right cylinder block realizes the entry and discharge of hydraulic oil through the inlet pipe and the outlet pipe, thereby allowing the hydraulic oil to enter or exit the right piston head away from the partition plate.

[0021] Preferably, a set of slots is formed on the inner wall of the intermediate cylinder, the slots are arranged opposite each other, a locking block is inserted into the slot, a locking hole is formed in the slot, the locking hole penetrates the intermediate cylinder, a locking screw is threaded into the locking hole, the opposite face of the locking screw is rotatably connected to the locking block, and a set of locking ring grooves is formed on the side wall of the partition plate for the locking block to be inserted.

[0022] By adopting the above technical solution, when the left piston rod and the right piston rod move in conjunction with each other, the locking screw is rotated and moves along the locking hole, causing the locking block to move out of the slot and be inserted into the locking ring groove, thereby fixing the partition plate. When the left piston rod and the right piston rod move independently, the locking screw is rotated and moves along the locking hole, causing the locking block to move out of the locking ring groove and be inserted into the slot, thereby fixing the partition plate.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By setting up a middle cylinder, left cylinder, right cylinder, oil circuit assembly, partition plate, left piston head, right piston head, left piston rod and right piston rod, the hydraulic cylinder can be adapted to various working conditions, thus expanding the application range of the hydraulic cylinder;

[0025] 2. By setting slots, locking blocks, locking holes, locking screws, and locking ring grooves, it is easy to fix the partition plate to the intermediate cylinder body;

[0026] 3. By setting up a stop rod and a telescopic spring, the telescopic spring forms a buffer during the movement of the left piston head, right piston head and partition plate. Attached Figure Description

[0027] Figure 1 This is a cross-sectional view of a high-performance integrated hydraulic cylinder according to an embodiment of this application.

[0028] Figure 2 yes Figure 1 Enlarged view of section A.

[0029] Figure 3 This is a schematic diagram illustrating the composition of the oil circuit components in the embodiments of this application.

[0030] Figure 4 This is a schematic diagram of the oil circuit connection in the embodiment of this application, showing the synchronous movement of the left and right piston heads.

[0031] Figure 5 This is a schematic diagram of the oil circuit connection in the embodiments of this application, showing the alternating movement of the left and right piston heads.

[0032] Explanation of reference numerals in the attached diagram: 1. Intermediate cylinder block; 11. Left cylinder block; 12. Right cylinder block; 13. Intermediate cylinder block; 131. Left limiting ring plate; 132. Right limiting ring plate; 2. Left cylinder block; 21. Left piston head; 22. Left piston rod; 3. Right cylinder block; 31. Right piston head; 32. Right piston rod; 4. Locking block; 41. Locking ring groove; 42. Slot; 43. Locking screw; 44. Locking hole; 5. Partition plate; 51. Abutment rod; 52. Telescopic spring; 6. Oil circuit assembly 61. Oil inlet pipe 1; 611. Oil inlet check valve 1; 62. Oil outlet pipe 1; 621. Oil outlet check valve 1; 71. Oil inlet pipe 2; 711. Oil inlet check valve 2; 72. Oil outlet pipe 2; 721. Oil outlet check valve 2; 81. Oil inlet pipe 3; 811. Oil inlet check valve 3; 82. Oil outlet pipe 3; 821. Oil outlet check valve 3; 91. Oil inlet pipe 4; 911. Oil inlet check valve 4; 92. Oil outlet pipe 4; 921. Oil outlet check valve 4. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0034] This application discloses a high-performance integrated hydraulic cylinder. (Refer to...) Figures 1 to 5The system includes an intermediate cylinder 1, which comprises a left cylinder 11, a right cylinder 12, and an intermediate cylinder 13. One end of the intermediate cylinder 13 is detachably connected to the left cylinder 11, and the other end is detachably connected to the right cylinder 12. A left cylinder 2 is mounted on the end of the left cylinder 11 furthest from the intermediate cylinder 13, and a right cylinder 3 is mounted on the end of the right cylinder 12 furthest from the intermediate cylinder 13. An oil passage assembly 6 is mounted on the left cylinder 11, right cylinder 12, left cylinder 2, and right cylinder 3 to allow hydraulic oil to flow within them. A partition plate 5 is installed inside the intermediate cylinder 13. One end of the partition plate 5 is connected to a left piston head 21, which is slidably disposed within the left cylinder 2. The other end of the partition plate 5 is connected to a right piston head 31, which is slidably disposed within the right cylinder 3. A left piston rod 22 is installed on the end of the left piston head 21 away from the partition plate 5, and the left piston rod 22 passes through the left cylinder 2. A right piston rod 32 is installed on the end of the right piston head 31 away from the partition plate 5, and the right piston rod 32 passes through the right cylinder 3.

[0035] When the left piston rod 22 and right piston rod 32 move independently and do not affect each other, the partition plate 5 is fixed to the intermediate cylinder 13, and the hydraulic circuit assembly 6 does not connect the left cylinder 2 and right cylinder 3. At this time, the hydraulic oil acting between the left piston head 21 and the partition plate 5 is controlled by the hydraulic circuit assembly 6, causing the left piston head 21 to drive the left piston rod 22 to reciprocate. The hydraulic oil acting between the right piston head 31 and the partition plate 5 is controlled by the hydraulic circuit assembly 6, causing the right piston head 31 to drive the right piston rod 32 to reciprocate.

[0036] When the left piston rod 22 and the right piston rod 32 extend and retract synchronously, the partition plate 5 is fixed to the intermediate cylinder 13. The side of the left piston head 21 away from the partition plate 5 and the side of the right piston head 31 facing the partition plate 5 are connected through the oil circuit assembly 6. When the left piston head 21 approaches the partition plate 5, the hydraulic oil between the left piston head 21 and the partition plate 5 is forced onto the side of the right piston head 31 away from the partition plate 5, causing the right piston head 31 to move towards the partition plate 5. When the left piston head 21 moves away from the partition plate 5, the hydraulic oil on the side of the left piston head 21 away from the partition plate 5 is forced onto the space between the right piston head 31 and the partition plate 5, causing the right piston head 31 to move away from the partition plate 5. When the right piston head 31 approaches the partition plate 5, the hydraulic oil between the right piston head 31 and the partition plate 5 is forced onto the side of the left piston head 21 away from the partition plate 5, causing the left piston head 21 to move towards the partition plate 5. When the right piston head 31 moves away from the partition plate 5, the hydraulic oil on the side of the right piston head 31 away from the partition plate 5 is squeezed between the left piston head 21 and the partition plate 5, causing the left piston head 21 to move away from the partition plate 5.

[0037] When the left piston rod 22 and right piston rod 32 need to extend and retract alternately, the hydraulic circuit assembly 6 connects the side of the left piston head 21 away from the partition plate 5 with the side of the right piston head 31 away from the partition plate 5, and also connects the side of the right piston head 31 facing the partition plate 5 with the side of the left piston head 21 facing the partition plate 5. When the left piston head 21 approaches the partition plate 5, the hydraulic oil between the left piston head 21 and the partition plate 5 is squeezed to the side of the right piston head 31 facing the partition plate 5, causing the right piston head 31 to move away from the partition plate 5. When the left piston head 21 moves away from the partition plate 5, the hydraulic oil on the side of the left piston head 21 away from the partition plate 5 is squeezed to the side of the right piston head 31 away from the partition plate 5, causing the right piston head 31 to move closer to the partition plate 5. When the right piston head 31 approaches the partition plate 5, the hydraulic oil between the right piston head 31 and the partition plate 5 is squeezed to the side of the left piston head 21 facing the partition plate 5, causing the left piston head 21 to move away from the partition plate 5. When the right piston head 31 moves away from the partition plate 5, the hydraulic oil on the side of the right piston head 31 away from the partition plate 5 is squeezed into the side of the left piston head 21 away from the partition plate 5, causing the left piston head 21 to move closer to the partition plate 5.

[0038] This allows the left piston rod 22 and the right piston rod 32 to move independently without moving from each other, while also allowing them to be interconnected, thus enabling the hydraulic cylinder to be suitable for various working conditions and expanding its application range.

[0039] To control the movement stroke of partition 5, refer to... Figure 1 and Figure 2 A left limiting ring plate 131 is installed inside the middle cylinder 13 near the left cylinder 11, and a right limiting ring plate 132 is installed inside the middle cylinder 13 near the right cylinder 12. A partition plate 5 is movably positioned between the left and right limiting ring plates 131 and 132. A set of slots 42 are formed on the inner wall of the middle cylinder 13, with the slots 42 facing each other, and a locking block 4 is inserted into each slot 42. A locking hole 44 is formed in each slot 42, penetrating the middle cylinder 13, and a locking screw 43 is threaded into the locking hole 44. The opposite face of the locking screw 43 is rotatably connected to the locking block 4. A set of locking ring grooves 41 are formed on the side wall of the partition plate 5 for the insertion of the locking block 4. Rotating the locking screw 43 causes it to move along the locking hole 44. When the locking block 4 is removed from the slot 42 and inserted into the locking ring groove 41, the partition plate 5 is fixed inside the intermediate cylinder 13, making it difficult for the partition plate to move. When the locking block 4 is removed from the locking ring groove 41 and inserted into the slot 42, the partition plate 5 slides between the left limiting ring plate 131 and the right limiting ring plate 132. The left limiting ring plate 131 and the right limiting ring plate 132 restrict the range of motion of the left piston head 21, the right piston head 31 and the partition plate 5, thereby facilitating the installation and connection of the oil circuit assembly 6 according to the range of motion of the left piston head 21, the right piston head 31 and the partition plate 5.

[0040] To make hydraulic cylinders suitable for various working conditions, refer to Figure 1 Each end wall of the partition plate 5 is equipped with an abutment rod 51. One abutment rod 51, with its end away from the partition plate 5, abuts against the left piston head 21, and the other abutment rod 51, with its end away from the partition plate 5, abuts against the right piston head 31. A telescopic spring 52 is fitted onto each abutment rod 51. One end of the telescopic spring 52 is connected to the partition plate 5, with one end of the telescopic spring 52 connected to the left piston head 21 and the other end of the telescopic spring 52 connected to the right piston head 31. Both the left piston head 21 and the right piston head 31 are connected to the partition plate 5 via the telescopic spring 52. During the movement of the left piston head 21, the right piston head 31, and the partition plate 5, the telescopic spring 52 provides cushioning.

[0041] When the hydraulic cylinder only needs to drive the left piston rod 22 to extend, the partition plate 5 slides between the left limiting ring plate 131 and the right limiting ring plate 132. First, the hydraulic circuit assembly 6 injects hydraulic oil into the side of the right piston head 31 away from the partition plate 5. After the right piston head 31 abuts against the right limiting ring plate 132, the hydraulic circuit assembly 6 injects hydraulic oil between the right piston head 31 and the partition plate. When the partition plate 5 moves to abut against the left limiting ring plate 131, the hydraulic circuit assembly 6 injects hydraulic oil between the left piston head 21 and the partition plate, causing the left piston head 21 to drive the left piston rod 22 to extend out of the left cylinder 2. The multi-stage hydraulic oil ensures the stable operation of the left piston rod 22.

[0042] When the hydraulic cylinder only needs to drive the right piston rod 32 to extend, the partition plate 5 slides between the left limiting ring plate 131 and the right limiting ring plate 132. First, the hydraulic circuit assembly 6 injects hydraulic oil into the side of the left piston head 21 away from the partition plate 5. After the left piston head 21 abuts against the left limiting ring plate 131, the hydraulic circuit assembly 6 injects hydraulic oil between the left piston head 21 and the partition plate. When the partition plate 5 moves to abut against the right limiting ring plate 132, the hydraulic circuit assembly 6 injects hydraulic oil between the right piston head 31 and the partition plate, causing the right piston head 31 to drive the right piston rod 32 to extend out of the right cylinder body 3. The right piston rod 32 runs stably through multi-stage hydraulic oil.

[0043] To ensure the hydraulic oil flows within the intermediate cylinder 1, left cylinder 2, and right cylinder 3, refer to... Figures 1 to 5The oil circuit assembly 6 includes an inlet pipe 61, an outlet pipe 62, an inlet pipe 71, an outlet pipe 72, an inlet pipe 81, an outlet pipe 82, an inlet pipe 91, and an outlet pipe 92. Inlet pipe 61 and outlet pipe 62 are both connected to the left cylinder 11. An inlet check valve 611 is installed on inlet pipe 61, and an outlet check valve 621 is installed on outlet pipe 62. Inlet pipe 71 and outlet pipe 72 are both connected to the right cylinder 12. An inlet check valve 711 is installed on inlet pipe 71, and an outlet check valve 721 is installed on outlet pipe 72. Inlet pipe 81 and outlet pipe 82 are both connected to the left cylinder 2. An inlet check valve 811 is installed on inlet pipe 81, and an outlet check valve 821 is installed on outlet pipe 82. Both the oil inlet pipe 491 and the oil outlet pipe 492 are connected to the right cylinder block 3. An oil inlet check valve 4911 is installed on the oil inlet pipe 491, and an oil outlet check valve 4921 is installed on the oil outlet pipe 492.

[0044] When the left piston rod 22 and the right piston rod 32 move independently and do not affect each other, the partition plate 5 is fixed inside the intermediate cylinder 13. Oil inlet pipe 1 61, oil outlet pipe 1 62, oil inlet pipe 2 71, and oil outlet pipe 2 72 are all connected, while oil inlet pipe 3 81, oil outlet pipe 3 82, oil inlet pipe 4 91, and oil outlet pipe 4 92 are all cut off. When the left piston rod 22 and the right piston rod 32 extend and retract synchronously, the partition plate 5 is fixed inside the intermediate cylinder 13. Oil inlet pipe 3 81 and oil outlet pipe 2 72 are interconnected, oil outlet pipe 3 82 and oil inlet pipe 2 71 are interconnected, oil inlet pipe 1 61 and oil outlet pipe 4 92 are interconnected, and oil outlet pipe 4 92 and oil inlet pipe 1 61 are interconnected. When the left piston rod 22 and the right piston rod 32 need to extend and retract alternately, connect the oil inlet pipe 1 61 to the oil outlet pipe 2 72, connect the oil outlet pipe 2 72 to the oil inlet pipe 1 61, connect the oil inlet pipe 3 81 to the oil outlet pipe 4 92, and connect the oil outlet pipe 4 92 to the oil inlet pipe 3 81.

[0045] The implementation principle of a high-performance integrated hydraulic cylinder according to an embodiment of this application is as follows: when the left piston rod 22 and the right piston rod 32 move independently and do not affect each other, the partition plate 5 is fixed inside the intermediate cylinder 13. Oil inlet pipe 61, oil outlet pipe 62, oil inlet pipe 71, and oil outlet pipe 72 are all connected, while oil inlet pipe 81, oil outlet pipe 82, oil inlet pipe 91, and oil outlet pipe 92 are all cut off. Hydraulic oil enters and exits through oil inlet pipe 61 and oil outlet pipe 62, thereby allowing hydraulic oil to enter or exit between the left piston head 21 and the partition plate 5, realizing the extension and retraction of the left piston rod 22. Similarly, hydraulic oil enters and exits through oil inlet pipe 71 and oil outlet pipe 72, thereby allowing hydraulic oil to enter or exit between the right piston head 31 and the partition plate 5, realizing the extension and retraction of the right piston rod 32.

[0046] When the left piston rod 22 and the right piston rod 32 extend and retract synchronously, the partition plate 5 is fixed inside the intermediate cylinder 13. The third oil inlet pipe 81 is connected to the second oil outlet pipe 72, and the third oil outlet pipe 82 is connected to the second oil inlet pipe 71. The first oil inlet pipe 61 is connected to the fourth oil outlet pipe 92, and the fourth oil outlet pipe 92 is connected to the first oil inlet pipe 61. When the left piston head 21 approaches the partition plate 5, the hydraulic oil between the left piston head 21 and the partition plate 5 is squeezed to the side of the right piston head 31 away from the partition plate 5, causing the right piston head 31 to move towards the partition plate 5. When the left piston head 21 moves away from the partition plate 5, the hydraulic oil on the side of the left piston head 21 away from the partition plate 5 is squeezed to the space between the right piston head 31 and the partition plate 5, causing the right piston head 31 to move away from the partition plate 5. When the right piston head 31 approaches the partition plate 5, the hydraulic oil between the right piston head 31 and the partition plate 5 is squeezed to the side of the left piston head 21 away from the partition plate 5, causing the left piston head 21 to move towards the partition plate 5. When the right piston head 31 moves away from the partition plate 5, the hydraulic oil on the side of the right piston head 31 away from the partition plate 5 is squeezed to the space between the left piston head 21 and the partition plate 5, causing the left piston head 21 to move away from the partition plate 5.

[0047] When the left piston rod 22 and right piston rod 32 need to extend and retract alternately, the first oil inlet pipe 61 is connected to the second oil outlet pipe 72, the second oil outlet pipe 72 is connected to the first oil inlet pipe 61, the third oil inlet pipe 81 is connected to the fourth oil outlet pipe 92, and the fourth oil outlet pipe 92 is connected to the third oil inlet pipe 81. When the left piston head 21 approaches the partition plate 5, the hydraulic oil between the left piston head 21 and the partition plate 5 is squeezed to the side of the right piston head 31 and the partition plate 5, causing the right piston head 31 to move away from the partition plate 5. When the left piston head 21 moves away from the partition plate 5, the hydraulic oil on the side of the left piston head 21 away from the partition plate 5 is squeezed to the side of the right piston head 31 away from the partition plate 5, causing the right piston head 31 to move closer to the partition plate 5. When the right piston head 31 approaches the partition plate 5, the hydraulic oil between the right piston head 31 and the partition plate 5 is squeezed to the side of the left piston head 21 and the partition plate 5, causing the left piston head 21 to move away from the partition plate 5. When the right piston head 31 moves away from the partition plate 5, the hydraulic oil on the side of the right piston head 31 away from the partition plate 5 is squeezed into the side of the left piston head 21 away from the partition plate 5, causing the left piston head 21 to move closer to the partition plate 5.

[0048] When the hydraulic cylinder only needs to drive the left piston rod 22 to extend, the partition plate 5 slides between the left limiting ring plate 131 and the right limiting ring plate 132. First, hydraulic oil is injected into the side of the right piston head 31 away from the partition plate 5 through the oil inlet pipe 4 91. After the right piston head 31 abuts against the right limiting ring plate 132, hydraulic oil is injected between the right piston head 31 and the partition plate through the oil inlet pipe 2 71. When the partition plate 5 moves to abut against the left limiting ring plate 131, hydraulic oil is injected between the left piston head 21 and the partition plate through the oil inlet pipe 1 61, causing the left piston head 21 to drive the left piston rod 22 to extend out of the left cylinder 2. The multi-stage hydraulic oil ensures the stable operation of the left piston rod 22.

[0049] When the hydraulic cylinder only needs to drive the right piston rod 32 to extend, the partition plate 5 slides between the left limit ring plate 131 and the right limit ring plate 132. First, hydraulic oil is injected into the side of the left piston head 21 away from the partition plate 5 through the oil inlet pipe three 81. After the left piston head 21 abuts against the left limit ring plate 131, hydraulic oil is injected between the left piston head 21 and the partition plate through the oil inlet pipe one 61. When the partition plate 5 moves to abut against the right limit ring plate 132, hydraulic oil is injected between the right piston head 31 and the partition plate through the oil inlet pipe two 71, causing the right piston head 31 to drive the right piston rod 32 to extend out of the right cylinder body 3. The multi-stage hydraulic oil ensures the stable operation of the right piston rod 32.

[0050] This allows the left piston rod 22 and the right piston rod 32 to be independent and not move from each other, while also allowing them to be interconnected. Furthermore, when the left piston rod 22 and the right piston rod 32 extend independently, the stability of the left piston rod 22 and the right piston rod 32 is improved, thus enabling the hydraulic cylinder to be suitable for various working conditions and expanding its application range.

[0051] 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 high-performance integrated hydraulic cylinder, comprising an intermediate cylinder body (1), characterized in that: A left cylinder (2) is fixedly installed at one end of the intermediate cylinder (1), and a right cylinder (3) is installed at the other end of the intermediate cylinder (1). An oil circuit assembly (6) is installed on the intermediate cylinder (1), the left cylinder (2), and the right cylinder (3). The oil circuit assembly (6) is used to allow hydraulic oil to flow in the intermediate cylinder (1), the left cylinder (2), and the right cylinder (3). A partition plate (5) is installed in the intermediate cylinder (1). A left piston head (21) is slidably installed in the left cylinder (2). A right piston head (31) is slidably installed in the right cylinder (3). A left piston rod (22) is fixedly installed on the end of the left piston head (21) away from the partition plate (5). The left piston rod (22) passes through the left cylinder (2). A right piston rod (32) is fixedly installed on the end of the right piston head (31) away from the partition plate (5). The right piston rod (32) passes through the right cylinder (3). The intermediate cylinder (1) includes an intermediate cylinder (13), a left cylinder (11) and a right cylinder (12). The left cylinder (11) is fixedly connected to the left cylinder (2), and the right cylinder (12) is fixedly connected to the right cylinder (3). One end of the intermediate cylinder (13) is detachably connected to the left cylinder (11), and the other end of the intermediate cylinder (13) is detachably connected to the right cylinder (12). A left limiting ring plate (131) is provided in the intermediate cylinder (13) near the left cylinder (11), and a right limiting ring plate (132) is provided in the intermediate cylinder (13) near the right cylinder (12). The partition plate (5) is provided between the left limiting ring plate (131) and the right limiting ring plate (132). Each of the partition plates (5) has a fixed abutment rod (51) on its end wall. One of the abutment rods (51) is used to abut against the left piston head (21) at the end away from the partition plate (5), and the other abutment rod (51) is used to abut against the right piston head (31) at the end away from the partition plate (5). A telescopic spring (52) is sleeved on the abutment rod (51). One end of the telescopic spring (52) is fixedly connected to the partition plate (5). One of the telescopic springs (52) is fixedly connected to the left piston head (21) at the end away from the partition plate, and the other telescopic spring (52) is fixedly connected to the right piston head (31) at the end away from the partition plate. A set of slots (42) are provided on the inner wall of the intermediate cylinder (13). The slots (42) are arranged opposite each other. A locking block (4) is inserted into the slot (42). A locking hole (44) is provided in the slot (42). The locking hole (44) passes through the intermediate cylinder (13). A locking screw (43) is threaded into the locking hole (44). The opposite face of the locking screw (43) is rotatably connected to the locking block (4). A set of locking ring grooves (41) are provided on the side wall of the partition plate (5). The locking ring grooves (41) are used for the locking block (4) to be inserted. When the left piston rod (22) and right piston rod (32) extend and retract synchronously, or when the left piston rod (22) and right piston rod (32) need to extend and retract alternately, rotate the locking screw (43). The locking screw (43) moves along the locking hole (44), causing the locking block (4) to move out of the slot (42) and insert into the locking ring groove (41), thereby fixing the partition plate (5). When the left piston rod (22) and right piston rod (32) move independently, Rotate the locking screw (43), and the locking screw (43) moves along the locking hole (44), causing the locking block (4) to move out of the locking ring groove (41) and insert the locking block (4) into the slot (42), thereby causing the partition plate (5) to slide between the left limiting ring plate (131) and the right limiting ring plate (132); through the left limiting ring plate (131) and the right limiting ring plate (132), the range of motion of the left piston head (21), the right piston head (31) and the partition plate (5) is restricted.

2. The high-performance integrated hydraulic cylinder according to claim 1, characterized in that: The oil circuit assembly (6) includes an oil inlet pipe (61) and an oil outlet pipe (62). Both the oil inlet pipe (61) and the oil outlet pipe (62) are connected to the left cylinder (11). An oil inlet check valve (611) is provided on the oil inlet pipe (61), and an oil outlet check valve (621) is provided on the oil outlet pipe (62).

3. A high-performance integrated hydraulic cylinder according to claim 2, characterized in that: The oil circuit assembly (6) also includes an oil inlet pipe (71) and an oil outlet pipe (72), both of which are connected to the right cylinder (12). An oil inlet check valve (711) is provided on the oil inlet pipe (71), and an oil outlet check valve (721) is provided on the oil outlet pipe (72).

4. A high-performance integrated hydraulic cylinder according to claim 3, characterized in that: The oil circuit assembly (6) also includes an oil inlet pipe three (81) and an oil outlet pipe three (82). Both the oil inlet pipe three (81) and the oil outlet pipe three (82) are connected to the left cylinder block (2). An oil inlet check valve three (811) is provided on the oil inlet pipe three (81), and an oil outlet check valve three (821) is provided on the oil outlet pipe three (82).

5. A high-performance integrated hydraulic cylinder according to claim 4, characterized in that: The oil circuit assembly (6) also includes an oil inlet pipe (91) and an oil outlet pipe (92), both of which are connected to the right cylinder block (3). An oil inlet check valve (911) is provided on the oil inlet pipe (91), and an oil outlet check valve (921) is provided on the oil outlet pipe (92).

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