Bidirectional self-control separation oil cylinder

Abstract

The utility model discloses a two-way self-control separation oil cylinder which solves the problem that a double-rod oil cylinder in the prior art cannot meet the requirement that double rods of a packer need to stretch out and draw back in the same direction at the same time or a single rod of the packer needs to stretch out and draw back on one side. The bidirectional self-control separation oil cylinder comprises a cylinder body, a left piston assembly and a right piston assembly are symmetrically arranged in the cylinder body, a left guide end cover assembly is arranged at the left end of the cylinder body, a right guide end cover assembly is arranged at the right end of the cylinder body, and an adjusting mechanism for synchronously or asynchronously adjusting the left piston assembly and the right piston assembly is arranged on the cylinder body. The oil cylinder with one cylinder and two rods is matched with the adjusting mechanism, and during synchronous adjustment, the left piston assembly and the right piston assembly stretch out and draw back synchronously leftwards or rightwards or stretch out and draw back synchronously in two directions under the action of the adjusting mechanism; during asynchronous adjustment, the left piston assembly and the right piston assembly stretch out and draw back the single-side piston assembly under the action of the adjusting mechanism; the oil cylinder can adapt to various working conditions, and the applicability of the oil cylinder is improved.

Description

A bidirectional self-controlled separation cylinder Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology for baling machines, and in particular to a bidirectional hydraulic cylinder. Background Technology

[0002] In machinery, it is often necessary to use hydraulic cylinders to drive mechanisms to perform relative movements simultaneously, that is, two mechanisms to move closer or further apart at the same time. The common approach is to use two cylinders, each driving one mechanism. This method occupies a large space and the hydraulic circuit is relatively complex. Existing conventional double-rod cylinders, such as the bidirectional telescopic multi-functional hydraulic cylinder disclosed in CN 216642630 U, can only guarantee the movement of one side of the cylinder. That is, if one end of the cylinder extends, the other end must retract. Obviously, this cannot meet the special requirements of baling machines that require simultaneous telescopic movement of both rods in the same direction or single-rod single-side telescopic movement. Moreover, baling machines using a single-rod structure have the problem of large telescopic stroke, which further affects baling efficiency. Summary of the Invention

[0003] To address the shortcomings in the aforementioned background technology, this utility model proposes a bidirectional self-controlled separation cylinder, which solves the problem that existing double-rod cylinders cannot meet the requirements of baling machines for simultaneous extension and retraction of both rods in the same direction or single-rod extension and retraction on one side.

[0004] The technical solution of this utility model is implemented as follows: a bidirectional self-controlled separation cylinder includes a cylinder body, in which a left piston assembly and a right piston assembly are symmetrically arranged. A left guide end cap assembly for guiding and sealing the left piston assembly is provided at the left end of the cylinder body, and a right guide end cap assembly for guiding and sealing the right piston assembly is provided at the right end of the cylinder body. An adjustment mechanism for synchronously or asynchronously adjusting the left piston assembly and the right piston assembly is provided on the cylinder body.

[0005] In a further preferred embodiment, both the left guide end cap assembly and the right guide end cap assembly include a guide sleeve and a dust cover. The guide sleeve is connected to the cylinder body through an inner retaining ring, and the dust cover is fixedly connected to the guide sleeve through screws. A seal is provided between the guide sleeve and the corresponding left piston assembly and right piston assembly, and a seal is provided between the guide sleeve and the inner wall of the cylinder body.

[0006] Further preferably, both the left piston assembly and the right piston assembly include a piston and a piston rod, with one end of the piston rod fixedly connected to the piston and the other end extending out of the cylinder body.

[0007] In one embodiment, the adjustment mechanism includes a left nozzle group disposed on the left side of the cylinder body and a right nozzle group disposed on the right side of the cylinder body. The left nozzle group includes a first nozzle and a second nozzle, and the right nozzle group includes a third nozzle and a fourth nozzle. When the left piston assembly is in the left limit position, the first nozzle and the second nozzle are located on the left and right sides of the piston of the left piston assembly, respectively. When the right piston assembly is in the right limit position, the third nozzle and the fourth nozzle are located on the left and right sides of the piston of the right piston assembly, respectively.

[0008] In another embodiment, the adjusting mechanism includes oil nozzle I and oil nozzle II disposed on the cylinder body. When the left piston assembly is in the left limit position, oil nozzle I is located on the left side of the piston of the left piston assembly; when the right piston assembly is in the right limit position, oil nozzle II is located on the right side of the piston of the right piston assembly. The piston rod of the left piston assembly and / or the piston rod of the right piston assembly are provided with an inner oil passage along the axial direction, and the oil outlet end of the inner oil passage leads to the end of the corresponding piston rod.

[0009] In a further preferred embodiment, the oil inlet of the inner oil passage is connected to an oil pipe piston rod, and an oil pipe cylinder body is connected to the outer wall of the cylinder body. The oil pipe cylinder body is arranged parallel to the cylinder body and is sleeved on the oil pipe piston rod. An oil pipe piston is provided between the oil pipe piston rod and the inner wall of the oil pipe cylinder body. An axial blind hole and an oil pipe inlet / outlet hole communicating with the axial blind hole are opened inside the oil pipe piston rod. The oil pipe inlet / outlet hole is located on the left and right sides of the oil pipe piston. An oil nozzle III is provided on the oil pipe cylinder body. The oil pipe piston rod is connected to the inner oil passage through a connector.

[0010] In a further preferred embodiment, the oil pipe cylinder body is fixedly mounted on the cylinder body by a support frame, and oil pipe guide sleeves are provided at both ends of the oil pipe cylinder body to seal and cooperate with the oil pipe piston rod.

[0011] In a further preferred embodiment, the oil pipe guide sleeve is sealed to both ends of the oil pipe cylinder body via flange bolts, and a seal is provided between the oil pipe guide sleeve and the oil pipe piston rod. A support sleeve is provided on the cylinder body.

[0012] The beneficial effects of this utility model are as follows: This utility model adopts a hydraulic cylinder with a double rod and an adjustment mechanism. During synchronous adjustment, the left piston assembly and the right piston assembly extend and retract synchronously to the left or to the right or in both directions under the action of the adjustment mechanism. During asynchronous adjustment, the left piston assembly and the right piston assembly extend and retract unilaterally under the action of the adjustment mechanism. It can be adapted to various working conditions and improve the applicability of the hydraulic cylinder.

[0013] This utility model features a single-cylinder, double-rod hydraulic cylinder that can meet the requirements of baling machines for simultaneous simultaneous extension and retraction of both rods in the same direction or single-rod extension and retraction on one side. Furthermore, the double-rod design of this hydraulic cylinder reduces the single-rod extension stroke, thereby improving the working efficiency of the baling machine.

[0014] The adjustment mechanism of this utility model adopts a four-nozzle structure, which is compact, easy to control and low in cost; it adopts a three-nozzle filling pipe piston rod structure to ensure that the position of the connection point between the pump station's liquid pipe and the oil cylinder (i.e., nozzle III) is fixed and does not move with the movement of the piston rod in the main cylinder, thereby improving the safety and convenience of the oil cylinder operation; it can be reasonably selected according to different working conditions. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 is a schematic diagram of the structure of this utility model in Embodiment 2;

[0017] Figure 2 is a schematic diagram of the structure of this utility model in Embodiment 3;

[0018] Figure 3 is a magnified view of part A in Figure 2;

[0019] Figure 4 is a magnified view of part B in Figure 2;

[0020] Figure 5 is a schematic diagram of the first state of synchronous working mode in Example 2;

[0021] Figure 6 is a schematic diagram of the second state of the synchronous working mode in Example 2;

[0022] Figure 7 is a schematic diagram of the first state of asynchronous working mode in Example 2;

[0023] Figure 8 is a schematic diagram of the second state of asynchronous working mode in Example 2;

[0024] Figure 9 is a schematic diagram of the first state of the synchronous working mode in Example 3;

[0025] Figure 10 is a schematic diagram of the second state of the synchronous working mode in Example 3;

[0026] Figure 11 is a schematic diagram of the first state of asynchronous working mode in Example 3;

[0027] Figure 12 is a schematic diagram of the second state of asynchronous working mode in Example 3. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1

[0030] A bidirectional self-controlled separation cylinder, as shown in Figure 1, includes a cylinder body 1, which is the main cylinder. A left piston assembly 20 and a right piston assembly 30 are symmetrically arranged inside the cylinder body 1. Both the left piston assembly 20 and the right piston assembly 30 include a piston 3 and a piston rod 5. One end of the piston rod 5 is fixedly connected to the piston 3, and the other end extends out of the cylinder body 1. The pistons of the left piston assembly 20 and the right piston assembly 30 are arranged opposite to each other, and the piston rods of both piston assemblies are coaxially aligned with the cylinder body. A left guide end cap assembly 21 is provided at the left end of the cylinder body 1 to guide and seal the left piston assembly 20, and a right guide end cap assembly 31 is provided at the right end of the cylinder body 1 to guide and seal the right piston assembly 30, ensuring the cylinder's sealing performance. An adjustment mechanism is provided on the cylinder body 1 for synchronous or asynchronous adjustment of the left piston assembly 20 and the right piston assembly 30. During synchronous adjustment, the left piston assembly 20 and the right piston assembly 30 extend and retract synchronously to the left or to the right under the action of the adjustment mechanism; during asynchronous adjustment, the left piston assembly 20 and the right piston assembly 30 extend and retract on one side under the action of the adjustment mechanism; this meets the requirements of the baling machine for simultaneous extension and retraction of both rods in the same direction or single-rod extension and retraction on one side. Furthermore, the cylinder structure adopts a double-rod design, reducing the single-rod extension and retraction stroke and improving the working efficiency of the baling machine.

[0031] In this preferred embodiment, as shown in Figure 4, both the left guide end cap assembly 21 and the right guide end cap assembly 31 include a guide sleeve 6 and a dust cover 8. The guide sleeve slides with the corresponding piston rod, guiding the piston rod. The guide sleeve 6 is connected to the cylinder body 1 via an inner retaining ring 7, fixing the guide sleeve. The dust cover 8 is fixedly connected to the guide sleeve 6 via screws 16, connecting the dust cover and the guide sleeve. A seal is provided between the guide sleeve 6 and the corresponding left piston assembly 20 and right piston assembly 30. A sealing ring is provided between the left guide sleeve and the piston rod of the left piston assembly, and a sealing ring is provided between the right guide sleeve and the piston rod of the right piston assembly. A seal is also provided between the guide sleeve 6 and the inner wall of the cylinder body 1; this seal can also be a sealing ring, ensuring the cylinder's sealing performance. In actual use, a support sleeve 2 is provided on the cylinder body 1. The support sleeve supports the cylinder body and can also be used to connect the cylinder to the equipment using the cylinder.

[0032] Example 2

[0033] A bidirectional self-controlled separation cylinder, as shown in Figure 1, is based on Embodiment 1. In this embodiment, the adjusting mechanism includes a left nozzle group located on the left side of the cylinder body 1 and a right nozzle group located on the right side of the cylinder body 1. Specifically, the left nozzle group includes a first nozzle 17 and a second nozzle 18, and the right nozzle group includes a third nozzle 19 and a fourth nozzle 14. When the left piston assembly 20 is in the left extreme position, the first nozzle 17 and the second nozzle 18 are located on the left and right sides of the piston of the left piston assembly 20, respectively. Furthermore, when the piston of the right piston assembly moves to the left extreme position, the second nozzle is located between the piston of the left piston assembly and the piston of the right piston assembly. Similarly, when the right piston assembly 30 is in the right extreme position, the third nozzle 19 and the fourth nozzle 14 are located on the left and right sides of the piston of the right piston assembly 30, respectively, and when the piston of the left piston assembly is in the right extreme position, the third nozzle 19 is located between the piston of the left piston assembly and the piston of the right piston assembly.

[0034] The specific working modes are as follows: As shown in Figures 5 and 6, the synchronous working mode is as follows: 1. Oil enters through the first oil nozzle, oil returns through the third and fourth oil nozzles, the second oil nozzle closes, and both piston rods extend synchronously to the right; 2. Oil enters through the fourth oil nozzle, oil returns through the first and second oil nozzles, the third oil nozzle closes, and both piston rods extend synchronously to the left. In this synchronous working mode, the left piston assembly 20 and the right piston assembly 30 move synchronously in the same direction to achieve the simultaneous extension and retraction of the two rods of the hydraulic cylinder in the same direction, meeting the requirements of the packaging process.

[0035] As shown in Figures 7 and 8, the asynchronous working mode is as follows: Right piston rod working independently: (Left piston rod needs to reach the left limit position) 1. Oil enters through the second nozzle, oil returns through the fourth and first nozzles, the third nozzle closes, and the right piston rod extends; 2. Oil enters through the fourth nozzle, oil returns through the second and first nozzles, the third nozzle closes, and the right piston rod retracts. Left piston rod working independently: (Right piston rod needs to reach the foremost position for conversion) 1. Oil enters through the third nozzle, oil returns through the first and fourth nozzles, the second nozzle closes, and the left piston rod extends; 2. Oil enters through the first nozzle, oil returns through the third and fourth nozzles, the second nozzle closes, and the left piston rod retracts. In this asynchronous working mode, the left piston assembly 20 and the right piston assembly 30 can move asynchronously in both directions to achieve the single-rod unidirectional extension and retraction function of the hydraulic cylinder.

[0036] Example 3

[0037] A bidirectional self-controlled separation cylinder, as shown in Figure 2, differs from Embodiment 2 in that the adjusting mechanism in this embodiment includes oil nozzles I141 and II142 disposed on the cylinder body 1, respectively symmetrically disposed at the left and right ends of the cylinder body. When the left piston assembly 20 is in the left extreme position, oil nozzle I141 is located to the left of the piston of the left piston assembly 20; when the right piston assembly 30 is in the right extreme position, oil nozzle II142 is located to the right of the piston of the right piston assembly 30. An inner oil passage 4 is provided axially inside the piston rod of the left piston assembly 20 and / or the piston rod of the right piston assembly 30. The oil outlet of the inner oil passage 4 leads to the end of the corresponding piston rod, that is, the oil outlet of the inner oil passage 4 forms an oil inlet located in the common rodless cavity; the common rodless cavity refers to the cavity area located between the two pistons in the cylinder body.

[0038] In this embodiment, the hydraulic cylinder operates in the following modes: Synchronous mode: When the inlet nozzle (inner oil passage 4) is closed, oil enters through nozzle I and returns through nozzle II, causing both piston rods to extend synchronously to the right; when oil enters through nozzle II and returns through nozzle I, both piston rods extend synchronously to the left. Alternatively, oil can enter through the inlet nozzle (inner oil passage 4) and return through nozzles I and II, causing both piston rods to extend synchronously in both directions; when oil enters through nozzles I and II and returns through the inlet nozzle (inner oil passage), both piston rods retract synchronously in both directions.

[0039] Asynchronous working mode: Right piston rod working independently: (Left piston rod needs to reach the left limit position) 1. Oil enters through the inlet nozzle (inner oil passage), oil returns through nozzle II, nozzle I closes, and the right piston rod extends; 2. Oil enters through nozzle II, oil returns through the inlet nozzle (inner oil passage), nozzle I closes, and the right piston rod retracts. Left piston rod working independently: (Right piston rod needs to reach the right limit position) 1. Oil enters through the inlet nozzle (inner oil passage), oil returns through nozzle I, nozzle II closes, and the left piston rod extends; 2. Oil enters through nozzle I, oil returns through the inlet nozzle (inner oil passage), nozzle II closes, and the left piston rod retracts.

[0040] Example 4

[0041] A bidirectional self-controlled separation cylinder, as shown in Figure 3, is based on embodiment 3. In this embodiment, the inner oil passage 4 is located inside the piston rod of the left piston assembly. The oil inlet of the inner oil passage 4 is close to the end of the piston rod, and the oil inlet of the inner oil passage 4 is connected to the oil pipe piston rod 9. Specifically, the oil pipe piston rod 9 is connected to the inner oil passage 4 through a connector 93 to facilitate the smooth flow of oil. An oil pipe cylinder body 10 is connected to the outer wall of the cylinder body 1. The oil pipe cylinder body 10 is arranged parallel to the cylinder body 1 and is sleeved on the oil pipe piston rod 9. Preferably, in the non-working mode, both ends of the oil pipe piston rod 9 extend out of the oil pipe cylinder body to reduce the axial thrust of the oil on the oil pipe piston. In this embodiment, an oil pipe piston 11 is provided between the oil pipe piston rod 9 and the inner wall of the oil pipe cylinder body 10. The oil pipe piston 11 is located in the middle of the oil pipe piston rod, and its main function is to support the oil pipe piston rod and guide the oil pipe piston. An axial blind hole 91 and an oil pipe inlet / outlet hole 92 connected to the axial blind hole 91 are provided inside the oil pipe piston rod 9. The oil pipe inlet / outlet hole 92 are located on the left and right sides of the oil pipe piston 11. Because the oil pipe inlet / outlet hole 92 is located on the left and right sides of the oil pipe piston 11, the oil pipe cylinder on both sides of the oil pipe piston 11 is filled with oil. Oil can also flow between the oil pipe piston 11 and the oil pipe cylinder, so the piston is not subjected to axial thrust and only serves to support the oil pipe piston rod. The end of the axial blind hole away from the connector 93 is a closed end. The oil pipe cylinder 10 is provided with an oil nozzle III 13, which is located on the right side of the oil pipe cylinder 10. Pump station oil enters the oil pipe cylinder through the oil nozzle III 13, then enters the axial blind hole 91 through the oil pipe inlet / outlet hole 92, then enters the inner oil passage 4 through the connector, and then enters the cylinder 1.

[0042] In this embodiment, the oil pipe cylinder body 10 is fixedly mounted on the cylinder body 1 by a support frame 15. Oil pipe guide sleeves 12 are provided at both ends of the oil pipe cylinder body 10 to seal against the oil pipe piston rod 9. The oil pipe guide sleeves 12 serve to seal the oil pipe cylinder body. Specifically, the oil pipe guide sleeves 12 are sealed to both ends of the oil pipe cylinder body 10 by flange bolts, and a seal is provided between the oil pipe guide sleeves 12 and the oil pipe piston rod 9, using a sealing ring.

[0043] In this embodiment, the purpose of using a double-cylinder structure is to fix the position of the connection point between the pump station's liquid pipe and the cylinder (i.e., nozzle III), preventing it from moving with the piston rod inside the main cylinder, thus improving the safety and convenience of the cylinder's operation. The cylinder's operating modes in this embodiment are as follows: As shown in Figures 9 and 10, synchronous operating mode: Synchronous operating states: 1. Oil enters through nozzle I, oil returns through nozzle II, nozzle III closes, and both piston rods extend synchronously to the right; 2. Oil enters through nozzle II, oil returns through nozzle I, nozzle III closes, and both piston rods extend synchronously to the left. As shown in Figures 11 and 12, asynchronous operating mode: Right piston rod working independently: (The left piston rod needs to reach its left limit position) 1. Oil enters through nozzle III, oil returns through nozzle II, nozzle I closes, and the right piston rod extends; 2. Oil enters through nozzle II, oil returns through nozzle III, nozzle I closes, and the right piston rod retracts. The left piston rod operates independently (the right piston rod must reach its right limit): 1. Oil enters through nozzle III, oil returns through nozzle I, nozzle II closes, and the left piston rod extends; 2. Oil enters through nozzle I, oil returns through nozzle III, nozzle II closes, and the left piston rod retracts. These synchronous and asynchronous operating modes are designed to adapt to the extension and retraction requirements of the baling machine's hydraulic cylinder, further improving the baling machine's working efficiency.

[0044] It should be noted that in the description of this utility model, the terms "vertical," "horizontal," "up," "down," "front," "back," "left," "right," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bidirectional self-controlled separation cylinder, comprising a cylinder body (1), characterized in that: The cylinder (1) is symmetrically provided with a left piston assembly (20) and a right piston assembly (30). The left end of the cylinder (1) is provided with a left guide end cap assembly (21) for guiding and sealing the left piston assembly (20), and the right end of the cylinder (1) is provided with a right guide end cap assembly (31) for guiding and sealing the right piston assembly (30). The cylinder (1) is provided with an adjustment mechanism for synchronously or asynchronously adjusting the left piston assembly (20) and the right piston assembly (30).

2. The bidirectional self-controlled separation cylinder according to claim 1, characterized in that: The left guide end cap assembly (21) and the right guide end cap assembly (31) both include a guide sleeve (6) and a dust cover (8). The guide sleeve (6) is connected to the cylinder body (1) through an inner key ring (7). The dust cover (8) is fixedly connected to the guide sleeve (6) through a screw (16). A seal is provided between the guide sleeve (6) and the corresponding left piston assembly (20) and right piston assembly (30). A seal is provided between the guide sleeve (6) and the inner wall of the cylinder body (1).

3. The bidirectional self-controlled split oil cylinder according to claim 1 or 2, characterized in that: The left piston assembly (20) and the right piston assembly (30) both include a piston (3) and a piston rod (5), with one end of the piston rod (5) fixedly connected to the piston (3) and the other end extending out of the cylinder body (1).

4. The bidirectional self-controlled separation cylinder according to claim 3, characterized in that: The adjustment mechanism includes a left oil nozzle group located on the left side of the cylinder (1) and a right oil nozzle group located on the right side of the cylinder (1). The left oil nozzle group includes a first oil nozzle (17) and a second oil nozzle (18), and the right oil nozzle group includes a third oil nozzle (19) and a fourth oil nozzle (14). When the left piston assembly (20) is in the left limit position, the first oil nozzle (17) and the second oil nozzle (18) are located on the left and right sides of the piston of the left piston assembly (20), respectively. When the right piston assembly (30) is in the right limit position, the third oil nozzle (19) and the fourth oil nozzle (14) are located on the left and right sides of the piston of the right piston assembly (30), respectively.

5. The bidirectional self-control separating oil cylinder according to claim 3, characterized in that: The adjustment mechanism includes oil nozzle I (141) and oil nozzle II (142) disposed on the cylinder body (1). When the left piston assembly (20) is in the left limit position, oil nozzle I (141) is located on the left side of the piston of the left piston assembly (20); when the right piston assembly (30) is in the right limit position, oil nozzle II (142) is located on the right side of the piston of the right piston assembly (30); the piston rod of the left piston assembly (20) and / or the piston rod of the right piston assembly (30) are provided with an inner oil passage (4) along the axial direction, and the oil outlet end of the inner oil passage (4) leads to the end of the corresponding piston rod.

6. The bidirectional self-control separating oil cylinder according to claim 5, characterized in that: The oil inlet of the inner oil passage (4) is connected to an oil pipe piston rod (9), and an oil pipe cylinder body (10) is connected to the outer wall of the cylinder body (1). The oil pipe cylinder body (10) is arranged parallel to the cylinder body (1). The oil pipe cylinder body (10) is sleeved on the oil pipe piston rod (9). An oil pipe piston (11) is provided between the oil pipe piston rod (9) and the inner wall of the oil pipe cylinder body (10). An axial blind hole (91) and an oil pipe inlet / outlet hole (92) connected to the axial blind hole (91) are provided in the oil pipe piston rod (9). The oil pipe inlet / outlet hole (92) is located on the left and right sides of the oil pipe piston (11). An oil nozzle III (13) is provided on the oil pipe cylinder body (10).

7. The bidirectional self-control separating oil cylinder according to claim 6, characterized in that: The oil pipe piston rod (9) is connected to the inner oil passage (4) through the connector (93).

8. The bidirectional self-controlled separation cylinder according to claim 6 or 7, characterized in that: The oil pipe cylinder body (10) is fixedly mounted on the cylinder body (1) by a support frame (15), and the two ends of the oil pipe cylinder body (10) are provided with oil pipe guide sleeves (12) that are sealed and cooperate with the oil pipe piston rod (9).

9. The bidirectional self-controlled separation cylinder according to claim 8, characterized in that: The oil pipe guide sleeve (12) is sealed to both ends of the oil pipe cylinder body (10) by flange bolts, and a seal is provided between the oil pipe guide sleeve (12) and the oil pipe piston rod (9).

10. The bidirectional self-controlled separation cylinder according to claim 1, 4, 5, or 9, characterized in that: The cylinder body (1) is provided with a support sleeve (2).

Images