Military composite carbon fiber hydraulic oil cylinder

Abstract

The military composite carbon fiber hydraulic oil cylinder comprises an oil cylinder body, a piston arranged in the oil cylinder body in a sealed and sliding mode and a sealing ring arranged on the piston, an oil inlet assembly, a pressure applying assembly and an opening and closing assembly are arranged in the piston, the pressure applying assembly and the opening and closing assembly are driven by the oil inlet assembly, and the oil inlet assembly comprises an oil cavity formed below the sealing ring; the pressure applying assembly comprises a movable switch, a first magnet and a second magnet, a locking assembly is arranged on a moving path of the movable switch, a switching assembly is arranged in the oil cylinder body, and the pressure applying assembly is used for powering on while hydraulic oil pushes the movable switch to move after the oil inlet assembly drives the hydraulic oil to enter the oil cavity. And the opening and closing assembly is used for switching the oil inlet state of the oil inlet assembly, the switching assembly is used for switching the magnetic flux state of the first magnet and the second magnet, and the sealing performance between the sealing ring and the inner wall of the oil cylinder body is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of hydraulic system technology, and more specifically to a military-grade composite carbon fiber hydraulic cylinder. Background Technology

[0002] A carbon fiber composite hydraulic cylinder is a type of hydraulic cylinder that uses carbon fiber composite material as the main reinforcing material. Chinese Patent Publication No. CN118128800A discloses a structure for a carbon fiber composite hydraulic cylinder, aiming to solve the technical problem of low service life of the sealing gaskets in current carbon fiber composite hydraulic cylinders. The cylinder includes a cylinder barrel with a cylinder head sealed to it, and a piston rod movably connected to the cylinder head, with a piston fixedly mounted at its bottom end. The piston rod includes a piston tube movably connected to the cylinder head, with a connecting block detachably fixed to its top end. An adjusting rod is rotatably connected inside the piston tube cavity. The piston is fixed to the bottom end of the piston tube, and a ring diameter adjustment mechanism is provided inside the piston. The input end of the ring diameter adjustment mechanism is connected to the bottom end of the adjusting rod, and a sealing ring is movably connected to the adjusting end of the ring diameter adjustment mechanism. The sealing ring is movably connected to the cylinder barrel. This invention has the advantages of a clear and compact structural design and ease of use.

[0003] However, the inventor discovered that the above-mentioned hydraulic cylinder achieves a sealing effect by expanding the sealing ring through gears. However, after prolonged use, the gears are prone to wear, which affects the use of the hydraulic cylinder. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a military-grade composite carbon fiber hydraulic cylinder. When hydraulic oil drives a movable switch and a fixed switch to be energized, the first magnet, the second magnet, and the third magnet are magnetically connected. This causes the second magnet and the third magnet to compress the hydraulic oil, which in turn applies radial outward pressure to the sealing ring, greatly improving the sealing performance between the sealing ring and the inner wall of the cylinder body.

[0005] The technical solution of the present invention is as follows:

[0006] A military-grade composite carbon fiber hydraulic cylinder includes a cylinder body, a piston slidably disposed within the cylinder body, and a sealing ring disposed on the piston. The piston contains an oil inlet assembly, a pressure application assembly driven by the oil inlet assembly, and an opening / closing assembly. The oil inlet assembly includes an oil chamber located below the sealing ring. The pressure application assembly includes a movable switch, a first magnet, and a second magnet. A locking assembly is disposed along the movement path of the movable switch. A switching assembly is disposed within the cylinder body. The pressure application assembly is used to energize the movable switch while the oil inlet assembly drives the hydraulic oil into the oil chamber, causing the first and second magnets to become magnetically connected and apply radially outward pressure to the sealing ring. The opening / closing assembly is used to switch the oil inlet state of the oil inlet assembly, and the switching assembly is used to switch the magnetically connected state of the first and second magnets.

[0007] As a preferred embodiment, the oil inlet assembly further includes several oil inlet holes formed on the piston, a rotating plate rotatably disposed inside the piston, and several connecting holes formed on the rotating plate. The oil inlet holes are connected to the oil chamber, and the oil inlet holes cooperate with the connecting holes.

[0008] As a preferred embodiment, the pressure application assembly further includes a receiving groove formed in the middle of the piston, a fixed switch fixedly disposed in the receiving groove, a third magnet slidably disposed in the oil chamber, and an oil passage formed between the oil chamber and the receiving groove. The first magnet is fixedly disposed in the piston, the second magnet is slidably disposed in the oil chamber, the second magnet and the third magnet are slidably engaged, the fixed switch is electrically connected to the movable switch, the movable switch is electrically connected to the first magnet, and the first magnet is magnetically connected to the second magnet and the third magnet.

[0009] As a preferred embodiment, the opening and closing assembly includes a turntable rotatably disposed within a piston, a plurality of arc-shaped grooves formed on the turntable, a movable rod slidably disposed within the piston, a slide rod fixedly disposed on the movable rod, a limiting plate fixedly disposed on the slide rod, a first inclined surface formed on the movable rod, a moving rod fixedly disposed on a movable switch, and a second inclined surface formed on the moving rod. The slide rod cooperates with the arc-shaped grooves, the limiting plate cooperates with the turntable, the first inclined surface cooperates with the second inclined surface, a spring is provided between the movable rod and the piston, and the turntable is fixedly connected to the rotating plate.

[0010] As a preferred embodiment, the locking assembly includes a plurality of through slots formed on the receiving groove, a locking block slidably disposed in the through slots, and a third inclined surface formed on the locking block. A spring is provided between the locking block and the through slots, and the locking block is provided with an arc surface and cooperates with the movable switch.

[0011] As a preferred embodiment, the switching assembly includes a push groove formed on the through groove, a push rod fixedly disposed in the cylinder body, and a fourth inclined surface formed on the push rod, wherein the fourth inclined surface cooperates with the third inclined surface.

[0012] As a preferred embodiment, the piston is provided with several oil outlet grooves, and the oil outlet grooves are connected to the push groove.

[0013] As a preferred embodiment, the push rod and the push groove are fitted together with a gap between them.

[0014] The beneficial effects of this invention are as follows:

[0015] The present invention is equipped with an oil inlet component and a pressure application component. After the hydraulic oil drives the movable switch and the fixed switch to be energized, the first magnet is magnetically connected to the second magnet and the third magnet, causing the second magnet and the third magnet to squeeze the hydraulic oil. The hydraulic oil applies radial outward pressure to the sealing ring, which greatly improves the sealing performance between the sealing ring and the inner wall of the cylinder body.

[0016] In summary, the present invention has the advantages of good sealing effect and long service life, and is suitable for the field of hydraulic system technology. Attached Figure Description

[0017] The invention will be further described below with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the structure of a military composite carbon fiber hydraulic cylinder;

[0019] Figure 2 This is a schematic diagram of the piston structure;

[0020] Figure 3 This is a schematic diagram of the oil inlet assembly and the pressure application assembly;

[0021] Figure 4 This is a structural diagram of the locking component;

[0022] Figure 5 This is a structural diagram of the switching component;

[0023] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0024] Figure 7 This is a schematic diagram showing the state of the movable switch when hydraulic oil enters the oil chamber and the receiving tank;

[0025] Figure 8 A schematic diagram showing the state when the movable switch and the fixed switch are energized simultaneously, causing the connecting hole and the oil inlet hole to be misaligned.

[0026] Figure 9 This is a schematic diagram showing the state of the movable switch when it is disconnected from the fixed switch.

[0027] Figure 10 for Figure 9 Enlarged view at point B in the middle;

[0028] Reference numerals: 1. Cylinder body; 2. Piston; 4. Sealing ring; 5. Oil inlet assembly; 51. Oil chamber; 52. Oil inlet hole; 53. Rotating plate; 54. Connecting hole; 6. Pressurizing assembly; 61. Moving switch; 62. First magnet; 63. Second magnet; 64. Receiving groove; 65. Fixed switch; 66. Third magnet; 67. Oil circuit; 7. Opening and closing assembly; 71. Turntable; 72. Arc groove; 73. Movable rod; 74. Slide rod; 75. Limiting plate; 76. First inclined surface; 77. Moving rod; 78. Second inclined surface; 8. Locking assembly; 81. Through groove; 82. Locking block; 83. Third inclined surface; 9. Switching assembly; 91. Push groove; 92. Push rod; 93. Fourth inclined surface; 10. Oil outlet groove. Detailed Implementation

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0030] Example 1

[0031] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] like Figures 1 to 10 As shown, a military composite carbon fiber hydraulic cylinder includes a cylinder body 1, a piston 2 that is slidably disposed within the cylinder body 1, and a sealing ring 4 disposed on the piston 2. The piston 2 is provided with an oil inlet assembly 5, a pressure application assembly 6 driven by the oil inlet assembly 5, and an opening / closing assembly 7. The oil inlet assembly 5 includes an oil chamber 51 located below the sealing ring 4. The pressure application assembly 6 includes a movable switch 61, a first magnet 62, and a second magnet 63. A locking assembly 8 is disposed along the movement path of the movable switch 61. A switching assembly 9 is disposed within the cylinder body 1. The pressure application assembly 6 is used to apply pressure to the sealing ring 4 by energizing the movable switch 61 simultaneously with the hydraulic oil entering the oil chamber 51 driven by the oil inlet assembly 5, thereby energizing the first magnet 62 and the second magnet 63. The opening / closing assembly 7 is used to switch the oil inlet state of the oil inlet assembly 5, and the switching assembly 9 is used to switch the energized state of the first magnet 62 and the second magnet 63.

[0033] It is worth mentioning that, such as Figure 7As shown, the oil inlet assembly 5 also includes several oil inlet holes 52 opened on the piston 2, a rotating plate 53 rotatably disposed in the piston 2, and several connecting holes 54 opened on the rotating plate 53. The oil inlet holes 52 are connected to the oil chamber 51, and the oil inlet holes 52 and the connecting holes 54 are matched. The initial state of the connecting holes 54 is connected to the oil inlet holes 52. When oil is introduced into the oil inlet on the cylinder body 1, the hydraulic oil flows from the oil inlet holes 52 into the oil chamber 51, and the hydraulic oil fills the space between the second magnet 63 and the oil chamber 51.

[0034] It needs to be emphasized that, such as Figure 7 and Figure 8 As shown, the pressure application assembly 6 also includes a receiving groove 64 located in the middle of the piston 2, a fixed switch 65 fixedly disposed within the receiving groove 64, a third magnet 66 slidably disposed within the oil chamber 51, and an oil passage 67 disposed between the oil chamber 51 and the receiving groove 64. A first magnet 62 is fixedly disposed within the piston 2, and a second magnet 63 is slidably disposed within the oil chamber 51. The second magnet 63 and the third magnet 66 are in sliding engagement. The fixed switch 65 is electrically connected to a movable switch 61, and the movable switch 61 is electrically connected to the first magnet 62. The first magnet 62 is magnetically connected to the second magnet 63 and the third magnet 66. Both the second magnet 63 and the third magnet 66 are magnetically attracted to the first magnet. Therefore... The second magnet 63 and the third magnet 66 are initially in a retracted state, and the movable switch 61 is not in contact with the fixed switch 65. During use, after the hydraulic oil fills the space between the second magnet 63, the third magnet 66 and the oil chamber 51, the hydraulic oil flows into the receiving groove 64 through the oil passage 67. The hydraulic oil pushes the movable switch 61 to move. After the movable switch 61 contacts the fixed switch 65, it is energized, so that the first magnet 62 is magnetically connected to the second magnet 63 and the third magnet 66, achieving the effect of opposite repulsion. The second magnet 63 and the third magnet 66 unfold outward, squeezing the hydraulic oil. The hydraulic oil applies radial outward pressure to the sealing ring, improving the sealing performance between the sealing ring 4 and the inner wall of the cylinder body 1.

[0035] It should be further explained that, such as Figure 8As shown, the opening and closing assembly 7 includes a turntable 71 rotatably disposed within the piston 2, several arc-shaped grooves 72 formed on the turntable 71, a movable rod 73 slidably disposed within the piston 2, a slide rod 74 fixedly disposed on the movable rod 73, a limiting plate 75 fixedly disposed on the slide rod 74, a first inclined surface 76 formed on the movable rod 73, a moving rod 77 fixedly disposed on the movable switch 61, and a second inclined surface 78 formed on the moving rod 77. The slide rod 74 cooperates with the arc-shaped grooves 72, the limiting plate 75 cooperates with the turntable 71, the first inclined surface 76 cooperates with the second inclined surface 78, and the movable rod 73 cooperates with the piston 2. A spring is installed between the turntable 71 and the rotating plate 53. In use, when the movable switch 61 moves and contacts the fixed switch 65, the movable switch 61 drives the movable rod 77 to move synchronously. The movable rod 77 pushes the movable rod 73 to slide through the cooperation of the second inclined surface 78 and the first inclined surface 76. The movable rod 73 drives the turntable 71 and the rotating plate 53 to rotate through the sliding rod 74. The rotating plate 53 causes the connecting hole 54 to be misaligned with the oil inlet hole 52, thus sealing the oil inlet hole 52. This prevents the hydraulic oil from flowing out of the oil chamber 51 when the second magnet 63 and the third magnet 66 squeeze the hydraulic oil.

[0036] It is worth mentioning that, such as Figure 8 As shown, the locking assembly 8 includes several through slots 81 formed on the receiving groove 64, a locking block 82 slidably disposed in the through slots 81, and a third inclined surface 83 formed on the locking block 82. A spring is provided between the locking block 82 and the through slots 81. The locking block 82 is provided with an arc surface and cooperates with the movable switch 61. In the initial state, the locking block 82 is located below the movable switch 61 and locks the movable switch 61. In use, when the hydraulic oil pushes the movable switch 61 to move and contact the fixed switch 65, the movable switch 61 pushes the locking block 82 to move into the through slots 81. After the movable switch 61 contacts the fixed switch 65, the locking block 82 slides out from the through slots 81 and relocks the movable switch 61.

[0037] Furthermore, such as Figure 9 and Figure 10As shown, the switching component 9 includes a push groove 91 formed on the through groove 81, a push rod 92 fixedly set in the cylinder body 1, and a fourth inclined surface 93 formed on the push rod 92. The fourth inclined surface 93 cooperates with the third inclined surface 83. In use, when the cylinder body 1 is not in use, the piston 2 moves to the end of the cylinder body 1, and the push rod 92 is inserted into the push groove 91. Through the cooperation of the fourth inclined surface 93 and the third inclined surface 83, the locking block 82 slides into the through groove 81, unlocking the lock on the movable switch 61. The movable switch 61 is reset under the action of the spring and disengages from the fixed switch 65. Then the locking block 82 slides out of the through groove 81 and locks the movable switch 61 again. After the second magnet 63 and the third magnet 66 are no longer magnetic, the pressure applied to the hydraulic oil is canceled, improving the service life of the sealing ring 4.

[0038] In addition, such as Figure 2 As shown, the piston 2 has several oil outlet grooves 10 and the oil outlet grooves 10 are connected to the push groove 91. When the push rod 92 is inserted into the push groove 91, the hydraulic oil will flow out from the oil outlet grooves 10.

[0039] Furthermore, such as Figure 8 As shown, the push rod 92 and the push groove 91 are fitted together and there is a gap between them, so that the hydraulic oil in the push groove 91 can flow out from the push groove 91.

[0040] Work process

[0041] When hydraulic oil enters through the oil inlet on the cylinder body 1, it flows from the inlet hole 52 into the oil chamber 51, filling the space between the second magnet 63 and the oil chamber 51. The hydraulic oil then flows through the oil passage 67 into the receiving groove 64. This hydraulic oil pushes the movable switch 61 to move. Simultaneously, the movable switch 61 contacts the fixed switch 65 and energizes it, causing the movable rod 77 to move synchronously. The movable rod 77, through the cooperation of the second inclined surface 78 and the first inclined surface 76, pushes the movable rod 73 to slide. The movable rod 73, through the sliding rod 74, drives the turntable 71 and the rotating plate 53 to rotate. The rotating plate 53 causes the connecting hole 54 to be misaligned with the oil inlet hole 52, thus sealing the oil inlet hole 52. The first magnet 62 is then energized with the second magnet 63 and the third magnet 66. The second magnet 63 and the third magnet 66 extend outwards, squeezing the hydraulic oil. The hydraulic oil applies radial outward pressure to the sealing ring, improving the sealing performance between the sealing ring 4 and the inner wall of the cylinder body 1. When the cylinder body 1 is not in use, the piston 2 moves to the end of the cylinder body 1, and the push rod 92 is inserted into the push groove 91. Through the cooperation of the fourth inclined surface 93 and the third inclined surface 83, the locking block 82 slides into the through groove 81, unlocking the lock on the movable switch 61. The movable switch 61 resets under the action of the spring and disengages from the fixed switch 65. Then, the locking block 82 slides out of the through groove 81 and relocks the movable switch 61. After the second magnet 63 and the third magnet 66 are no longer magnetized, the pressure applied to the hydraulic oil is removed, improving the service life of the sealing ring 4.

[0042] In the description of this invention, it should be understood that the terms "front and back", "left and right", 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 invention and simplifying the description, and do not indicate or imply that the device or component 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 the invention.

[0043] Of course, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be understood as a limitation on the quantity.

[0044] The above description, in conjunction with the accompanying drawings, represents only preferred embodiments of the present invention. However, the present invention is not limited to the above embodiments. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention. These modifications and improvements should also be considered within the scope of protection of the present invention and will not affect the effectiveness and practicality of the present invention.

Claims

1. A military composite carbon fiber hydraulic cylinder, comprising a cylinder body (1), a piston (2) sealingly slidingly arranged in the cylinder body (1), and a sealing ring (4) arranged on the piston (2), characterized in that: The piston (2) is internally provided with an oil inlet assembly (5), a pressure applying assembly (6) and an opening and closing assembly (7) driven by the oil inlet assembly (5), the oil inlet assembly (5) comprises an oil cavity (51) formed below the sealing ring (4), the pressure applying assembly (6) comprises a moving switch (61) and a first magnet (62) and a second magnet (63), the moving switch (61) is provided with a locking assembly (8) on a moving path, the oil cylinder body (1) is internally provided with a switching assembly (9), the pressure applying assembly (6) is used for, after the hydraulic oil enters the oil cavity (51) driven by the oil inlet assembly (5), the hydraulic oil pushes the moving switch (61) to move at the same time and is electrified, so that the first magnet (62) and the second magnet (63) are magnetized to the sealing ring (4) and exert a radial outward pressure, the opening and closing assembly (7) is used for switching the state of the oil inlet assembly (5) to inlet oil, and the switching assembly (9) is used for switching the magnetization state of the first magnet (62) and the second magnet (63).

2. The military composite carbon fiber hydraulic cylinder according to claim 1, characterized in that: The oil inlet assembly (5) further comprises a plurality of oil inlet holes (52) formed on the piston (2), a rotating plate (53) rotatably arranged in the piston (2), and a plurality of connecting holes (54) formed on the rotating plate (53), the oil inlet holes (52) are communicated with the oil cavity (51), and the oil inlet holes (52) are matched with the connecting holes (54).

3. The military composite carbon fiber hydraulic cylinder of claim 1, wherein: The pressure applying assembly (6) further comprises a containing groove (64) formed in the middle of the piston (2), a fixed switch (65) fixedly arranged in the containing groove (64), a third magnet (66) slidably arranged in the oil cavity (51), and an oil path (67) formed between the oil cavity (51) and the containing groove (64), the first magnet (62) is fixedly arranged in the piston (2), the second magnet (63) is slidably arranged in the oil cavity (51), the second magnet (63) is slidably matched with the third magnet (66), the fixed switch (65) is electrically connected with the moving switch (61), the moving switch (61) is electrically connected with the first magnet (62), and the first magnet (62) is magnetically connected with the second magnet (63) and the third magnet (66).

4. The military composite carbon fiber hydraulic cylinder of claim 2, wherein: The opening and closing assembly (7) comprises a rotating disc (71) rotatably arranged in the piston (2), a plurality of arc-shaped grooves (72) formed on the rotating disc (71), a movable rod (73) slidably arranged in the piston (2), a sliding rod (74) fixedly arranged on the movable rod (73), a limiting plate (75) fixedly arranged on the sliding rod (74), a first inclined surface (76) formed on the movable rod (73), a moving rod (77) fixedly arranged on the moving switch (61), and a second inclined surface (78) formed on the moving rod (77), the sliding rod (74) is matched with the arc-shaped groove (72), the limiting plate (75) is matched with the rotating disc (71), the first inclined surface (76) is matched with the second inclined surface (78), a spring is arranged between the movable rod (73) and the piston (2), and the rotating disc (71) is fixedly connected with the rotating plate (53).

5. The military composite carbon fiber hydraulic cylinder of claim 3, wherein: The locking assembly (8) comprises a plurality of through grooves (81) formed on the accommodating groove (64), a locking block (82) slidingly arranged in the through groove (81), a third inclined surface (83) formed on the locking block (82), a spring arranged between the locking block (82) and the through groove (81), and an arc surface arranged on the locking block (82) and matched with the moving switch (61).

6. The military composite carbon fiber hydraulic cylinder of claim 5, wherein: The switching assembly (9) comprises a pushing groove (91) formed on the through groove (81), a pushing rod (92) fixedly arranged in the oil cylinder body (1), and a fourth inclined surface (93) formed on the pushing rod (92) and matched with the third inclined surface (83).

7. The military composite carbon fiber hydraulic cylinder of claim 6, wherein: A plurality of oil outlet grooves (10) are formed on the piston (2) and communicate with the pushing groove (91).

8. The military composite carbon fiber hydraulic cylinder of claim 6, wherein: The pushing rod (92) is matched with the pushing groove (91) and a gap exists between the pushing rod (92) and the pushing groove (91).

Images