A sealing device for intelligent cylinder

Abstract

The present application relates to the technical field of sealing device, especially to a kind of sealing device for intelligent cylinder.The technical problem: when the existing mode is sealed to intelligent cylinder, it is difficult to balance the size of air pressure and sealing degree, leading to the waste of sealing performance, unnecessary wear and tear, low life, and when adjusting sealing force, friction will change, affect the balance speed, sealing efficiency is low, leading to poor sealing effect.A kind of sealing device for intelligent cylinder, including: respectively opening one air hole one and one air hole two of intelligent cylinder.Twist rod rotation makes extrusion block extrude sleeve rod move, sleeve rod extrusion pressure spring makes sealing ring pressurize intelligent cylinder inner wall through pressure frame, sleeve rod movement drives piston ring to move, piston ring moves and the gas in storage cylinder is extruded into the cavity of sealing ring through gas pipe, and air pressure is generated, the contact area between sealing ring and intelligent cylinder inner wall increases, and the sealing effect of intelligent cylinder is significantly enhanced when using.

Description

Technical Field

[0001] The present invention relates to the technical field of sealing equipment, and in particular to a sealing device for an intelligent cylinder. Background Art

[0002] A cylinder is a mechanical device that uses compressed air as a power source to drive a piston to perform linear motion. It is used to perform various automated control tasks. In order to ensure the sealing and normal operation of the cylinder, the edge of the piston of a traditional cylinder is often stuck in a sealing ring with different sealing degrees. This method is not flexible enough and the sealing effect is poor. Improvements in existing technologies usually apply outward force to the sealing ring and inflate the sealing ring, causing the sealing ring to deform and increase the contact area with the inner wall of the cylinder to achieve the purpose of effective sealing.

[0003] Due to the change between the air pressure and the sealing effect, there is a critical value of the equilibrium state between the air pressure and the sealing force. When the existing sealing device seals the intelligent cylinder, it is not convenient to adjust the pressure of the sealing ring according to the stable and accurate air pressure, resulting in a waste of the sealing performance of the sealing ring. At the same time, the sealing ring may cause unnecessary wear due to the large contact surface, which in turn leads to a short service life of the sealing ring. In addition, there is friction between the sealing ring and the inner wall of the intelligent cylinder. When the sealing force of the sealing ring is adjusted, the friction will also change, affecting the equilibrium speed between the sealing force and the air pressure, resulting in low sealing efficiency and thus poor sealing effect. Summary of the Invention

[0004] In order to overcome the above shortcomings, the present invention provides a sealing device for an intelligent cylinder, which can adjust the sealing force according to the air pressure, reduce unnecessary wear of the sealing ring, significantly improve the service life of the sealing ring, and can apply lubricating liquid to the surface of the sealing ring when adjusting the sealing force, directly reducing friction and avoiding changes in friction that affect the adjustment rate, thereby enhancing the sealing effect of the intelligent cylinder.

[0005] The technical solution is as follows: A sealing device for an intelligent cylinder, comprising:

[0006] An intelligent cylinder having an air hole 1 and an air hole 2;

[0007] An outer frame with a liquid hole is fixedly connected to one side of the intelligent cylinder;

[0008] Sliding rod, slidably connected to the smart cylinder;

[0009] The slide plate is fixed to one end of the slide bar and has two sets of arc grooves;

[0010] A sealing assembly is provided on the slide plate;

[0011] The pressure applying mechanism is arranged on the sliding plate, the outer frame and the intelligent cylinder;

[0012] The inflation mechanism is arranged on the sliding plate and the pressure applying mechanism.

[0013] Optionally, the sealing assembly comprises four pressure applying frames slidably connected to the sliding plate; and a sealing ring sleeved outside the sliding plate and provided with a cavity, the inner side of the sealing ring being in contact with the four pressure applying frames.

[0014] Optionally, the pressure applying mechanism comprises a sliding ring slidably connected between the two groups of arc-shaped grooves; an extrusion block fixedly connected to the sliding ring, the extrusion block being uniformly and spacedly provided with four inclined surfaces; a torsion bar rotatably connected between the outer frame and one side of the intelligent cylinder; a rotating frame fixedly connected to one end of the torsion bar, the two sides of the rotating frame being rotatably connected to the inner walls of the intelligent cylinder, the sliding ring being slidably connected to the rotating frame; four sleeve rods slidably connected to the ends of the four pressure applying frames close to each other, the ends of the four sleeve rods close to each other being in contact with the four inclined surfaces of the extrusion block; and pressure springs connected between the four sleeve rods and the four pressure applying frames.

[0015] Optionally, the inflation mechanism comprises four gas storage cylinders fixedly connected to the sliding plate, the four pressure applying frames and the four sleeve rods being slidably connected to the four gas storage cylinders respectively; four gas delivery pipes in communication with one side of the four gas storage cylinders, the other ends of the four gas delivery pipes being in communication with the cavity of the sealing ring through the four pressure applying frames; and four piston rings fixedly connected to the four sleeve rods, the four piston rings being slidably connected to the inner walls of the four gas storage cylinders.

[0016] Optionally, two communication holes are formed in the side of the intelligent cylinder close to the outer frame.

[0017] Optionally, a rotating groove is formed in the torsion bar.

[0018] Optionally, the adjustment mechanism is arranged on the intelligent cylinder and the torsion bar, and is used for adjusting the sealing degree according to the gas pressure in the intelligent cylinder, the adjustment mechanism comprising: two piston cylinders I symmetrically fixedly connected to one side of the intelligent cylinder, the two piston cylinders I being in communication with the inside of the intelligent cylinder through the two communication holes; two piston rods I slidably connected in the two piston cylinders I; compression springs connected between the two piston rods I and the two piston cylinders I; clamping blocks fixedly connected to the two piston rods I; and an extrusion ring slidably connected to the rotating groove, the outer side of the extrusion ring being in close contact with the two clamping blocks, the extrusion ring being made of rubber.

[0019] Optionally, the filling mechanism is arranged on the outer frame and the clamping block, and the filling mechanism comprises: two piston cylinders two fixed to one side of the inner wall of the outer frame; a fixed frame fixed to one of the clamping blocks; two piston rods two fixed to the bottom of the fixed frame and slidably connected with the two piston cylinders two respectively; and a communication assembly arranged on the outer frame, the piston cylinders two and the intelligent cylinder.

[0020] Optionally, a ring groove is formed in one side of the intelligent cylinder, a plurality of small holes are formed between the ring groove and the interior of the intelligent cylinder, and two liquid communication grooves are connected between the ring groove and the exterior of the intelligent cylinder.

[0021] Optionally, the communication assembly comprises: two one-way valves one connected to the upper portions of the two piston cylinders two respectively; a bifurcated pipe connected between the two one-way valves one, the top of the bifurcated pipe being connected with the liquid communication hole; two one-way valves two connected to the lower portions of the two piston cylinders two respectively; two one-way valves three connected to the two liquid communication grooves respectively; and two liquid delivery pipes connected between the one-way valves two and the one-way valves three on the same side.

[0022] Beneficial effects: 1. The torsion bar drives the rotating frame, the sliding ring and the extrusion block to rotate along the arc-shaped groove, the four inclined surfaces of the extrusion block extrude the four sleeve rods to move away from each other, the four sleeve rods extrude the four pressure springs, the force of the four pressure springs is applied to the inner side of the sealing ring through the four pressure frames, the sealing ring extrudes the inner wall of the intelligent cylinder to the outside, the contact area between the sealing ring and the inner wall of the intelligent cylinder increases, the sleeve rod moves to drive the piston ring to move, the piston ring moves to extrude the gas in the gas storage cylinder into the cavity of the sealing ring through the gas delivery pipe to generate gas pressure, and the contact area between the sealing ring and the inner wall of the intelligent cylinder further increases, and the sealing effect of the intelligent cylinder during use is significantly improved.

[0023] 2. The gas pressure and the sealing degree are connected without affecting the normal use of the intelligent cylinder, the sealing degree of the sealing ring is accurately adjusted through the stable gas pressure, the sealing degree of the sealing ring and the pressure of the gas pressure form a balanced state, the sealing performance of the sealing ring is avoided to be wasted, unnecessary wear of the sealing ring due to the too large contact area is reduced, the service life of the sealing ring is significantly improved, and the sealing property of the intelligent cylinder during use is further improved.

[0024] 3, The card block moves to drive the piston rod two extrusion piston cylinder two inside the lubricating liquid, the card block reset drive piston rod two will be drawn into the piston cylinder two outside the lubricating liquid, the extruded lubricating liquid in turn through the one-way valve two, liquid delivery pipe, one-way valve three, liquid passage, ring groove and small hole coated on the outer surface of the sealing ring, directly reduce the friction between the sealing ring and the inner wall of the intelligent cylinder, avoid the influence of the change of friction on the balance speed of sealing force and air pressure size, improve the sealing efficiency, which makes the sealing effect of the intelligent cylinder further enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a perspective structural schematic diagram of the present application.

[0026] Figure 2 It is a perspective structural schematic diagram of the present application.

[0027] Figure 3 It is a perspective structural schematic diagram of the present application.

[0028] Figure 4 It is a perspective structural schematic diagram of the present application.

[0029] Figure 5 It is a perspective structural schematic diagram of the present application.

[0030] Figure 6 It is a perspective structural schematic diagram of the present application.

[0031] Figure 7 It is a perspective structural schematic diagram of the present application.

[0032] Figure 8 It is a perspective structural schematic diagram of the present application.

[0033] Figure 9 It is a perspective structural schematic diagram of the present application.

[0034] Figure 10 It is a perspective structural schematic diagram of the present application.

[0035] Figure 11 It is a perspective structural schematic diagram of the present application.

[0036] Figure 12 It is a perspective structural schematic diagram of the present application.

[0037] Figure 13 It is a perspective structural schematic diagram of the present application.

[0038] Figure 14 Partially cutaway perspective view of the adjustment mechanism of the present application.

[0039] Figure 15 Partially cutaway perspective view of the adjustment mechanism of the present application.

[0040] Figure 16 Partially cutaway perspective view of the adjustment mechanism of the present application.

[0041] Figure 17 Partially cutaway perspective view of the adjustment mechanism of the present application.

[0042] Figure 18 Partially cutaway perspective view of the adjustment mechanism of the present application.

[0043] The meaning of the reference signs in the drawing: 1: intelligent cylinder, 101: air hole one, 102: air hole two, 2: outer frame, 201: liquid passage, 3: slide rod, 4: slide plate, 401: arc-shaped groove, 51: pressing frame, 52: sealing ring, 61: sliding ring, 62: extrusion block, 63: torsion bar, 64: rotating frame, 65: sleeve rod, 66: pressing spring, 71: gas storage cylinder, 72: gas delivery pipe, 73: piston ring, 801: communication hole, 802: rotating groove, 81: piston cylinder one, 82: piston rod one, 83: compression spring, 84: clamping block, 85: extrusion ring, 91: piston cylinder two, 92: fixed frame, 93: piston rod two, 9401: ring groove, 9402: small hole, 9403: liquid passage, 941: one-way valve one, 942: bifurcated pipe, 943: one-way valve two, 944: one-way valve three, 945: liquid delivery pipe. DETAILED DESCRIPTION

[0044] In order to make the technical solutions and advantages of the present application clearer, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0045] Example 1: a sealing device for an intelligent cylinder, as shown in Figures 1-11 , comprising:

[0046] The intelligent cylinder 1 is provided with an air hole one 101 and an air hole two 102 respectively;

[0047] The outer frame 2 is provided with a liquid passage 201 and is connected to one side of the intelligent cylinder 1 by bolts, the liquid passage 201 is located at the top of the side of the outer frame 2 away from the intelligent cylinder 1, the air hole one 101 is located at the top of the side of the intelligent cylinder 1 away from the outer frame 2, and the air hole two 102 is located at the top of the side of the intelligent cylinder 1 close to the outer frame 2;

[0048] A slide rod 3 is slidably connected to the intelligent cylinder 1, and the connecting head of the slide rod 3 is located outside the intelligent cylinder 1.

[0049] A slide plate 4 is bolted to one end of the slide rod 3 close to the outer frame 2, and the slide plate 4 is located inside the intelligent cylinder 1. The slide plate 4 divides the inside of the intelligent cylinder 1 into two chambers. The air hole 1 and the air hole 2 are respectively connected to the two chambers of the intelligent cylinder 1. Two groups of arc-shaped grooves 401 are formed on the slide plate 4. Two arc-shaped grooves 401 in the same direction and located on opposite sides of the slide plate 4 form a group. There are four arc-shaped grooves 401 in total.

[0050] A sealing assembly is arranged on the slide plate 4 to preliminarily seal the communication between the two cavities in the intelligent cylinder 1.

[0051] A pressing mechanism is arranged on the slide plate 4, the outer frame 2 and the intelligent cylinder 1 to press the sealing assembly to achieve further sealing.

[0052] An inflation mechanism is arranged on the slide plate 4 and the pressing mechanism to inflate the sealing assembly to achieve further sealing.

[0053] The sealing assembly comprises four pressing frames 51 slidably connected to the slide plate 4 and arranged at uniform intervals, and a sealing ring 52 sleeved on the outside of the slide plate 4 and having a cavity, which is used to preliminarily seal the communication between the two cavities in the intelligent cylinder 1. The inside of the sealing ring 52 is in contact with the four pressing frames 51, and the pressing frames 51 are used to press the sealing ring 52 outward.

[0054] The pressing mechanism comprises a sliding ring 61 slidably connected between the two groups of arc-shaped grooves 401, an extrusion block 62 welded on the sliding ring 61 and located inside the slide plate 4, four inclined surfaces uniformly and separately arranged on the extrusion block 62, a torsion bar 63 rotatably connected between the outer frame 2 and one side of the intelligent cylinder 1 and manually twistable, a rotating frame 64 welded on one end of the torsion bar 63, the two sides of the rotating frame 64 being rotatably connected to the two sides of the inner wall of the intelligent cylinder 1 respectively, the sliding ring 61 being slidably connected to the rotating frame 64, four sleeve rods 65 slidably connected to one end of each of the four pressing frames 51 close to each other, one end of each of the four sleeve rods 65 being in contact with one of the four inclined surfaces of the extrusion block 62, and each of the four inclined surfaces of the extrusion block 62 being used to extrude one of the four sleeve rods 65, and four pressing springs 66 connected between each of the four sleeve rods 65 and each of the four pressing frames 51, the pressing springs 66 being used to press the pressing frames 51.

[0055] The inflating mechanism comprises four air storage cylinders 71 welded in the slide plate 4, which are arranged at equal intervals, four pressing frames 51 and four sleeve rods 65, which are respectively in sliding connection with the four air storage cylinders 71; four air delivery pipes 72 respectively connected to one side of the four air storage cylinders 71, the other ends of the four air delivery pipes 72 respectively passing through the four pressing frames 51 and being in communication with the cavities of the sealing rings 52; and four piston rings 73 respectively clamped on the four sleeve rods 65, which are respectively in sliding connection with the inner walls of the four air storage cylinders 71, and are used for inputting the air in the air storage cylinders 71 into the cavities of the sealing rings 52 through the air delivery pipes 72.

[0056] Before using the smart cylinder 1, the staff first connects the external air pump to the air hole 1 101 and the air hole 2 102 through two pipes respectively; when it is necessary to push the slide rod 3 of the smart cylinder 1 to extend outward, the air pump is connected to one of the pipes to fill the gas into the chamber of the smart cylinder 1 near the outer frame 2 through the air hole 2 102. Under the initial sealing effect of the sealing ring 52, the filled gas generates air pressure to squeeze the slide plate 4, the sealing component, the pressure mechanism (except the torsion bar 63 and the rotating frame 64) and the inflation mechanism together in the direction away from the outer frame 2, thereby pushing the gas in the other chamber of the smart cylinder 1 through the air hole 101 and the other pipe. The air in the smart cylinder 1 is discharged, and the slide plate 4 moves to drive the slide rod 3 to extend out of the smart cylinder 1; when the slide rod 3 that needs to be pushed out of the smart cylinder 1 is retracted inward, the air pump is connected to another pipeline to fill the gas into another chamber of the smart cylinder 1 through the air hole 101, thereby making the slide rod 3 retract into the inside of the smart cylinder 1, and the gas in the chamber near the outer frame 2 in the smart cylinder 1 will be squeezed out through the air hole 2 102 and the pipeline. In this way, the smart cylinder 1 can be used by switching the connection of the air pump; before using the smart cylinder 1, the staff can first twist the torsion bar 63 to rotate a certain angle, and the rotation of the torsion bar 63 drives the rotating frame 64, the sliding ring 61 and the extrusion block 62 to move along the arc groove 401 rotates, and the four inclined surfaces of the extrusion block 62 will respectively squeeze the four sleeve rods 65 to move away from each other, and the four sleeve rods 65 will squeeze the four pressure springs 66 respectively. The force of the four pressure springs 66 will be applied to the inner side of the sealing ring 52 through the four pressure racks 51, so that the sealing ring 52 presses the inner wall of the intelligent cylinder 1 outward, and the sealing ring 52 is deformed and the contact area between the inner wall of the intelligent cylinder 1 is increased; the movement of the sleeve rod 65 drives the piston ring 73 to move, and the movement of the piston ring 73 squeezes the gas in the gas storage cylinder 71 into the cavity of the sealing ring 52 through the gas pipe 72 to generate air pressure, so that the sealing ring 52 and the inner wall of the intelligent cylinder 1 are pressed against each other. The contact surface between them is further increased, which significantly enhances the sealing effect of the intelligent cylinder 1 when in use; after the intelligent cylinder 1 is used, the staff twists the torsion bar 63 in the direction to reset it, and the torsion bar 63 resets to drive the rotating frame 64, the sliding ring 61 and the extrusion block 62 to rotate in the opposite direction to reset, and the pressure spring 66 resets to drive the sleeve rod 65 and the piston ring 73 to reset together, and the pressure spring 66 resets and no longer applies pressure to the sealing ring 52 through the pressure frame 51, and the piston ring 73 resets to draw the gas input in the sealing ring 52 back into the air storage cylinder 71 through the air pipe 72, and then the staff removes the external air pump from the air hole 101 and the air hole 2 102 through the two pipes.

[0057] Example 2: Based on Example 1, Figures 12-16 As shown, two communication holes 801 are symmetrically opened on one side of the intelligent cylinder 1 close to the outer frame 2 .

[0058] A rotation groove 802 is formed on the torsion bar 63 .

[0059] Further comprising an adjusting mechanism for adjusting the sealing degree according to the gas pressure in the intelligent cylinder 1, which is arranged on the intelligent cylinder 1 and the torsion bar 63, the adjusting mechanism comprises: two piston cylinders I 81 symmetrically connected to one side of the intelligent cylinder 1 through bolts, the two piston cylinders I 81 are respectively communicated with the inside of the intelligent cylinder 1 through two communication holes 801, and the two piston cylinders are located in the outer frame 2; piston rods I 82 respectively and slidingly connected in the two piston cylinders I 81; compression springs 83 connected between the two piston rods I 82 and the two piston cylinders I 81 respectively; clamping blocks 84 respectively welded on the two piston rods I 82 and symmetrically arranged; and an extrusion ring 85 slidingly connected on the rotating groove 802, used for extruding the rotating groove 802 to rotate the torsion bar 63, the outer side of the extrusion ring 85 is in close contact with the two clamping blocks 84 respectively, and the extrusion ring 85 is made of rubber.

[0060] Before using the intelligent cylinder 1, the staff twists the torsion bar 63 to rotate the extrusion ring 85 through the rotating groove 802, when the gas is pumped into the chamber of the intelligent cylinder 1 close to the outer frame 2, under the action of the gas pressure, part of the gas will extrude the piston rod I 82 to move away from the intelligent cylinder 1 by a distance through the communication hole 801, the compression spring 83 is compressed by a part, the piston rod I 82 moves to drive the clamping block 84 and the extrusion ring 85 to move together, because the extrusion ring 85 is made of rubber, the clamping block 84 is in close contact with the extrusion ring 85, the rotating groove 802 is difficult to rotate the extrusion ring 85 in a passive state, and the extrusion ring 85 moves a distance to extrude the rotating groove 802 to make the torsion bar 63 rotate reversely by a certain angle, the torsion bar 63 reversely rotates by a certain angle to reduce the pressure of the sealing ring 52 on the inner wall of the intelligent cylinder 1 to a certain extent, and then the contact area of the sealing ring 52 and the inner wall of the intelligent cylinder 1 is reduced to a certain extent, if the gas pressure is reduced at this time, it indicates that the sealing degree of the sealing ring 52 is not enough, the reduction of the gas pressure makes the compression spring 83 reset by a distance to drive the piston rod I 82 to reset by a distance, the extrusion ring 85 resets by a distance to drive the torsion bar 63 to rotate forward by a certain angle, and then the sealing ring 52 enhances the contact area to a certain extent again, until the gas pressure is stable, in this way, the gas pressure and the sealing degree are connected without affecting the normal use of the intelligent cylinder 1, the sealing degree of the sealing ring 52 is accurately adjusted through the stable gas pressure, the sealing degree of the sealing ring 52 and the pressure of the gas pressure form a balanced state, the sealing performance of the sealing ring 52 is avoided to be wasted, unnecessary wear of the sealing ring 52 due to the too large contact area is reduced, and the service life of the sealing ring 52 is significantly improved, so that the sealing performance of the intelligent cylinder 1 in use is further improved.

[0061] Example 3: on the basis of example 2, as Figures 12-18The filling mechanism is arranged on the outer frame 2 and the clamping block 84, and comprises two symmetrical piston cylinders two 91 connected to one side of the inner wall of the outer frame 2 by bolts, a fixed frame 92 welded to one of the clamping blocks 84, two symmetrical piston rods two 93 welded to the bottom of the fixed frame 92, and a communication assembly arranged on the outer frame 2, the piston cylinders two 91 and the intelligent cylinder 1.

[0062] An annular groove 9401 is formed in one side of the intelligent cylinder 1, a plurality of small holes 9402 are formed between the annular groove 9401 and the interior of the intelligent cylinder 1, the annular groove 9401 and the exterior of the intelligent cylinder 1 are connected by two liquid communication grooves 9403.

[0063] The communication assembly comprises two one-way valves one 941 connected to the upper sides of the two piston cylinders two 91 respectively, a bifurcated pipe 942 connected between the two one-way valves one 941, the top of the bifurcated pipe 942 being connected to the liquid communication hole 201, two one-way valves two 943 connected to the lower sides of the two piston cylinders two 91 respectively, two one-way valves three 944 connected to the two liquid communication grooves 9403 respectively, and two liquid delivery pipes 945 connected between the one-way valves two 943 and the one-way valves three 944 on the same side.

[0064] When the sealing force of the sealing ring 52 is adjusted, the friction between the sealing ring 52 and the inner wall of the intelligent cylinder 1 will also change. Initially, the piston cylinders two 91 are filled with lubricating liquid, and the gas pumped into the intelligent cylinder 1 is blocked by the one-way valves three 944 after passing through the small holes 9402, the annular groove 9401 and the liquid communication grooves 9403 in sequence. Before using the intelligent cylinder 1, the staff first connects the lubricating liquid to the liquid communication hole 201 through the pipeline, and the clamping block 84 moves away from the intelligent cylinder 1, which drives the fixed frame 92 and the piston rods two 93 to move together. The piston rods two 93 move to extrude the lubricating liquid in the piston cylinders two 91. When the gas pressure decreases, the clamping block 84 resets to drive the piston rods two 93 to reset. The piston rods two 93 reset to draw the lubricating liquid into the piston cylinders two 91 through the one-way valves one 941 and the bifurcated pipe 942. In this way, the extruded lubricating liquid is coated on the outer surface of the sealing ring 52 through the one-way valves two 943, the liquid delivery pipes 945, the one-way valves three 944, the liquid communication grooves 9403, the annular groove 9401 and the small holes 9402 in sequence, directly reducing the friction between the sealing ring 52 and the inner wall of the intelligent cylinder 1, avoiding the influence of the change of the friction on the balance speed of the sealing force and the gas pressure, improving the sealing efficiency, and further enhancing the sealing effect of the intelligent cylinder 1.

[0065] The embodiments of the present application are described above with reference to the accompanying drawings, but the present application is not limited to the above-described specific embodiments, and the above-described specific embodiments are merely illustrative, but not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, and these all belong to the protection of the present application.

Claims

1. A sealing device for a smart cylinder, characterized by: The utility model relates to a smart cylinder (1) with a gas hole (101) and a gas hole (102) respectively, an outer frame (2) with a liquid hole (201) and fixed to one side of the smart cylinder (1), a slide rod (3) slidingly connected to the smart cylinder (1), a slide plate (4) fixed to one end of the slide rod (3) and having two groups of arc-shaped grooves (401) on the slide plate (4), a sealing assembly provided on the slide plate (4), a pressing mechanism provided on the slide plate (4), the outer frame (2) and the smart cylinder (1), and an inflation mechanism provided on the slide plate (4) and the pressing mechanism. The sealing assembly comprises four pressing frames (51) slidingly connected to the slide plate (4) and a sealing ring (52) sleeved on the outside of the slide plate (4) and having a cavity, with the inside of the sealing ring (52) in contact with the four pressing frames (51). The pressing mechanism comprises a sliding ring (61) slidingly connected between the two groups of arc-shaped grooves (401), an extrusion block (62) fixed to the sliding ring (61) and having four inclined surfaces uniformly and separately provided thereon, a torsion bar (63) rotationally connected between the outer frame (2) and one side of the smart cylinder (1), a rotating frame (64) fixed to one end of the torsion bar (63) and rotationally connected to the inner walls of the smart cylinder (1) on both sides, the sliding ring (61) slidingly connected to the rotating frame (64), sleeve rods (65) slidingly connected to one end of the four pressing frames (51) close to each other, the four sleeve rods (65) in contact with the four inclined surfaces of the extrusion block (62) at one end close to each other, and pressing springs (66) connected between the four sleeve rods (65) and the four pressing frames (51). The inflation mechanism comprises four gas storage cylinders (71) fixed to the inside of the slide plate (4), the four pressing frames (51) and the four sleeve rods (65) slidingly connected to the four gas storage cylinders (71) respectively, gas pipes (72) respectively connected to one side of the four gas storage cylinders (71), the other ends of the four gas pipes (72) respectively passing through the four pressing frames (51) and connected to the cavity of the sealing ring (52), and piston rings (73) fixed to the four sleeve rods (65) respectively and slidingly connected to the inner walls of the four gas storage cylinders (71). The smart cylinder (1) has two communication holes (801) on the side close to the outer frame (2). The torsion bar (63) has a rotating groove (802). ​ ​ ​ ​ ​ 2. A sealing device for a smart cylinder as claimed in claim 1, characterized in that: ​ 3. A sealing device for a smart cylinder as claimed in claim 2, characterized in that: ​ 4. A sealing device for a smart cylinder as claimed in claim 3, characterized in that: The adjusting mechanism is arranged on the intelligent cylinder (1) and the torsion bar (63), and comprises: two piston cylinders I (81) symmetrically fixed on one side of the intelligent cylinder (1), the two piston cylinders I (81) are communicated with the inside of the intelligent cylinder (1) through two communication holes (801) respectively; piston rods I (82) slidably connected in the two piston cylinders I (81) respectively; the compression springs (83) connected between the two piston rods I (82) and the two piston cylinders I (81) respectively; clamping blocks (84) fixed on the two piston rods I (82) respectively; an extrusion ring (85) slidably connected in the rotating groove (802), the outer side of the extrusion ring (85) is in close contact with the two clamping blocks (84) respectively, and the extrusion ring (85) is made of rubber.

5. A sealing device for a smart cylinder as claimed in claim 4, characterized in that: The filling mechanism is arranged on the outer frame (2) and the clamping block (84), and comprises: two piston cylinders II (91) fixed on one side of the inner wall of the outer frame (2); a fixed frame (92) fixed on one of the clamping blocks (84); two piston rods II (93) fixed on the bottom of the fixed frame (92), and the two piston rods II (93) are slidably connected with the two piston cylinders II (91) respectively; and a communication assembly arranged on the outer frame (2), the piston cylinders II (91) and the intelligent cylinder (1).

6. A sealing device for a smart cylinder as claimed in claim 5, characterized in that: A ring groove (9401) is formed on one side of the intelligent cylinder (1), a plurality of small holes (9402) are formed between the ring groove (9401) and the inside of the intelligent cylinder (1), and two liquid communication grooves (9403) are connected between the ring groove (9401) and the outside of the intelligent cylinder (1).

7. A sealing device for a smart cylinder as claimed in claim 6, characterized in that: The communication assembly comprises: two one-way valves I (941) communicated on the upper sides of the two piston cylinders II (91) respectively; a bifurcated pipe (942) communicated between the two one-way valves, the top of the bifurcated pipe (942) is communicated with the liquid communication hole (201); two one-way valves II (943) communicated on the lower sides of the two piston cylinders II (91) respectively; two one-way valves III (944) communicated on the two liquid communication grooves (9403) respectively; and one liquid conveying pipe (945) communicated between the one-way valve II (943) and the one-way valve III (944) on the same side.

Images