Bidirectional double-stroke hydraulic cylinder

Abstract

The invention discloses a bidirectional double-stroke hydraulic cylinder, and belongs to the field of hydraulic cylinders, the bidirectional double-stroke hydraulic cylinder comprises a cylinder body, the two sides of the cylinder body are fixedly connected with mounting seats, the interior of the cylinder body is slidably connected with two cylinder rods, one sides of the cylinder rods penetrate through the interiors of the mounting seats, and one sides of the mounting seats are connected with antifouling assemblies used for cleaning stains on the surfaces of the cylinder rods. The cylinder body is moved, the extrusion assembly is driven to rotate synchronously, the cleaning brush is driven to rotate through transmission, the rotating cleaning brush effectively wipes dust and impurities on the surface of the cylinder rod, and it is guaranteed that when the cylinder rod enters the cylinder body every time when being recycled, the cylinder rod does not carry the dust and the impurities to enter a sealing piece in an end cover; the sealing element is prevented from being scratched by dust and impurities, hydraulic oil in the cylinder body is prevented from leaking, the use effect of the hydraulic cylinder is prevented from being reduced, the service life of the sealing element is effectively prolonged, and use of unnecessary driving parts is reduced.

Description

Technical Field

[0001] The present invention relates to the field of hydraulic cylinders, and more particularly to a bidirectional and double-stroke hydraulic cylinder. Background Art

[0002] A bidirectional booster hydraulic cylinder is a hydraulic cylinder with piston rods on both sides of the piston. It is generally bidirectionally hydraulically driven and can achieve constant-speed reciprocating motion. A bidirectional fast hydraulic cylinder is often used on mechanical equipment that requires both a large thrust and a fast working speed. It is mainly composed of two double-acting hydraulic cylinders.

[0003] The bidirectional and double-stroke hydraulic rod is suitable for different environments. When the cylinder rod is working during use, a large amount of dust and impurities will adhere to its surface. The dust and impurities move inside the seal on the end cover of the cylinder rod box. The impurities will continuously rub and scratch the surface of the seal, accelerating the aging and damage of the seal on the end cover. A loosely sealed seal will cause the hydraulic oil inside the hydraulic rod to leak, affecting the operation of the hydraulic cylinder. Summary of the invention

[0004] In view of the problems existing in the prior art, an object of the present invention is to provide a bidirectional and double-stroke hydraulic cylinder.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A bidirectional double-stroke hydraulic cylinder comprises a cylinder body, both sides of which are fixedly connected to mounting seats, two cylinder rods are slidably connected inside the cylinder body, one side of the cylinder rods passes through the interior of the mounting seat, and one side of the mounting seat is connected to an anti-fouling component for cleaning stains on the surface of the cylinder rods.

[0007] The anti-fouling component includes an end cover fixed on one side of the mounting seat, one side of the end cover is provided with an annular slide groove, the inside of the annular slide groove is slidably connected to two connecting slide rods, one side of the two connecting slide rods is fixedly connected to an annular rack, the inner surface of the annular rack is fixedly connected to a cleaning brush, one side of the end cover is evenly rotatably connected to a third gear, one side of the third gear is fixedly connected to a worm gear, a support plate is symmetrically fixedly connected at the edge of one side of the end cover, the lower surface of the support plate is rotatably connected to a support shaft, the bottom of the support shaft is fixedly connected to an extrusion component, and the upper surface of the support shaft passes through the support plate and is fixedly connected to a worm.

[0008] Furthermore, the third gear and the annular rack are meshed with each other, the worm and the worm wheel are meshed with each other, the extrusion assembly is tightly fitted with the outer surface of the cylinder rod, the lower surface of the support plate is rotatably connected to the side away from the support shaft with an anti-slip assembly, and the upper surface of the mounting seat is fixedly connected to a switching assembly.

[0009] Furthermore, the anti-slip assembly includes a transmission shaft rotatably connected to the lower surface of the support plate and a first gear fixed to the outer surface of the support shaft, the outer surface of the transmission shaft is fixedly connected to a second gear, and the bottom of the transmission shaft is fixedly connected to a cleaning ball.

[0010] Furthermore, the first gear and the transmission shaft are located at the same horizontal height, the first gear and the second gear are meshed with each other, and the cleaning ball and the extrusion assembly are fitted with each other.

[0011] Furthermore, the extrusion assembly includes a mounting plate fixed to the bottom of the support shaft, the lower surface of the mounting plate is evenly slidably connected to six expansion plates, the outer surface of the expansion plate is sleeved with a rubber sleeve, the middle of the bottom of the mounting plate is rotatably connected to a first threaded rod, the outer surface of the first threaded rod is threadedly connected to a moving plate, and the outer surface of the moving plate is evenly and fixedly connected to six extrusion rods

[0012] Furthermore, two limiting rods are slidably connected inside the movable plate, and the bottoms of the limiting rods are fixedly connected to the mounting plate.

[0013] Furthermore, the switching assembly includes a fixed seat fixed on the upper surface of the mounting seat and an oil inlet and outlet port opened at the top of the mounting seat, a connecting pipe is fixedly connected to one side of the upper surface of the fixed seat, a groove is opened at the edge of the lower surface of the fixed seat, a rotating rod is rotatably connected to the middle of the upper surface of the fixed seat, the bottom of the rotating rod extends to the interior of the fixed seat and is fixedly connected to a rotating round block, four through holes are evenly opened inside the rotating round block, an annular magnet is fixedly connected to the top of the inner surface of the through hole, and a filter screen is sleeved inside the through hole.

[0014] Furthermore, an identification component is fixedly connected to the top of the rotating rod, a replacement component is arranged on the other side of the upper surface of the fixing seat, the groove is located above the oil inlet and outlet, and the mounting seat is interconnected with the interior of the fixing seat through the oil inlet and outlet and the groove.

[0015] Furthermore, the identification component includes a switching circular plate fixed on the top of the rotating rod and an arc-shaped rack fixed on the upper surface of the fixed seat near the rotating rod. Four grooves are evenly opened inside the switching circular plate. A fourth rack is rotatably connected to the inner surface of the groove. A rotating block is fixedly connected to one side of the fourth rack. The arc-shaped rack and the fourth rack are meshed with each other, and the rotating blocks point to the filter screens and correspond one to one.

[0016] Furthermore, the replacement component includes a replacement port opened on the side of the fixed seat away from the connecting pipe and a fixed plate fixed on the upper surface of the fixed seat, the internal thread of the fixed plate is connected with a second threaded rod, the internal sleeve of the replacement port is provided with a sealing cover, the upper surface of the sealing cover is symmetrically connected with a fixed sleeve block, one side of the second threaded rod passes through the interior of the fixed sleeve block, and the outer surface of the fixed sleeve block is tightly fitted with the cleaning ball.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This solution realizes the movement of the cylinder body by setting an anti-fouling component, drives the extrusion component to rotate synchronously, and drives the cleaning brush to rotate through the transmission. The rotating cleaning brush effectively wipes the dust and impurities on the surface of the cylinder rod, ensuring that each time the cylinder rod enters the interior of the cylinder body during recovery, it will not carry dust and impurities into the seal inside the end cover, thereby avoiding scratches on the seal by dust and impurities, preventing the hydraulic oil inside the cylinder body from leaking, reducing the use effect of the hydraulic cylinder, effectively increasing the service life of the seal, and reducing the use of unnecessary driving components.

[0019] 2. This solution sets an anti-slip component, and the cleaning ball wipes the surface of the continuously rotating extrusion component, so as to wipe and clean the dust on the surface of the extrusion component and ensure that there is always a certain friction between the extrusion component and the cylinder rod. Because the diameters of the first gear and the second gear are different, the rotation speeds of the extrusion component and the cleaning ball are different, so as to avoid the same speed rotation, which makes it impossible for the cleaning ball to wipe the surface of the extrusion component.

[0020] 3. This scheme sets up an extrusion assembly, and the expansion plate squeezes the rubber sleeve, pushing the rubber sleeve to deform and contact the cylinder rod, so that the rubber sleeve and the cylinder rod are tightly squeezed, increasing the friction between the cylinder rod and the rubber sleeve, and enabling the expansion plate and the rubber sleeve to rotate more stably, avoiding the wear of the rubber sleeve and causing the extrusion assembly to be unable to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the anti-fouling component of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the anti-skid assembly of the present invention;

[0024] Figure 4 Schematic diagram of the extrusion assembly structure of the present invention Figure 1 ;

[0025] Figure 5 Schematic diagram of the extrusion assembly structure of the present invention Figure 2 ;

[0026] Figure 6 The switching component structure of the present invention is schematically shown in FIG. Figure 1 ;

[0027] Figure 7 The switching component structure of the present invention is schematically shown in FIG. Figure 2 ;

[0028] Figure 8 It is a schematic diagram of the mounting seat structure of the present invention;

[0029] Fig. 9 It is a schematic diagram of the structure of the rotating circular block of the present invention;

[0030] Fig.10 It is a schematic diagram of the structure of the identification component of the present invention;

[0031] Fig.11 For the present invention Figure 6 Enlarged view of point A.

[0032] Description of the numbers in the figure:

[0033] 1. Cylinder body; 2. Mounting seat; 3. Cylinder rod;

[0034] 4. Anti-fouling component; 41. End cover; 42. Annular slide groove; 43. Connecting slide rod;

[0035] 44, anti-skid assembly; 441, first gear; 442, transmission shaft; 443, second gear; 444, cleaning ball;

[0036] 45. Extrusion assembly; 451. Mounting plate; 452. Rubber sleeve; 453. Expansion plate; 454. First threaded rod; 455. Moving plate; 456. Extrusion rod;

[0037] 46. ​​annular rack; 47. cleaning brush; 48. support plate; 49. worm; 410. worm wheel; 411. third gear; 412. support shaft;

[0038] 5. Switching assembly; 51. Fixing seat; 52. Connecting pipe; 53. Rotating rod;

[0039] 54, identification assembly; 541, switching circular plate; 542, rotating block; 543, fourth rack; 544, arc rack; 545, groove;

[0040] 55. Replacement assembly; 551. Sealing cover; 552. Fixed sleeve block; 553. Fixed plate; 554. Second threaded rod; 555. Replacement port;

[0041] 56. slot; 57. through hole; 58. filter screen; 59. annular magnet; 510. rotating round block; 511. oil inlet and outlet. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0043] See also Figures 1 to 11 A bidirectional double-stroke hydraulic cylinder includes a cylinder body 1, with mounting seats 2 fixedly connected on both sides of the cylinder body 1, two cylinder rods 3 slidably connected inside the cylinder body 1, one side of the cylinder rod 3 passes through the interior of the mounting seat 2, and one side of the mounting seat 2 is connected to an anti-fouling component 4 for cleaning stains on the surface of the cylinder rod 3.

[0044] like Figure 2 As shown, the anti-fouling component 4 includes an end cover 41 fixed on one side of the mounting base 2, an annular groove 42 is provided on one side of the end cover 41, two connecting slide rods 43 are slidably connected inside the annular groove 42, one side of the two connecting slide rods 43 is fixedly connected with an annular rack 46, the inner surface of the annular rack 46 is fixedly connected with a cleaning brush 47, one side of the end cover 41 is evenly rotatably connected with a third gear 411, one side of the third gear 411 is fixedly connected with a worm gear 410, a support plate 48 is symmetrically fixedly connected at the edge of one side of the end cover 41, the lower surface of the support plate 48 is rotatably connected with a support shaft 412, the bottom of the support shaft 412 is fixedly connected with an extrusion component 45, and the upper surface of the support shaft 412 passes through the support plate 48 and is fixedly connected with a worm 49.

[0045] The third gear 411 and the annular rack 46 are meshed with each other, the worm 49 and the worm wheel 410 are meshed with each other, the extrusion assembly 45 is tightly fitted with the outer surface of the cylinder rod 3, the lower surface of the support plate 48 is rotatably connected to the side away from the support shaft 412, and the upper surface of the mounting seat 2 is fixedly connected to the switching assembly 5.

[0046] When the cylinder rod 3 is moving, the friction between the cylinder rod 3 and the extrusion assembly 45 drives the extrusion assembly 45 to rotate, and the extrusion assembly 45 drives the support shaft 412 to rotate, and the support shaft 412 synchronously drives the worm 49 to rotate. Since the worm 49 and the worm wheel 410 are meshed with each other, the worm wheel 410 rotates on its own, and the worm wheel 410 drives the third gear 411 to rotate. The third gear 411 will drive the annular rack 46 to rotate on the outside of the cylinder rod 3, driving the cleaning brush 47 to wipe the surface of the moving cylinder rod 3. The rotating cleaning brush 47 effectively wipes the dust and impurities on the surface of the cylinder rod 3, ensuring that each time the cylinder rod 3 enters the interior of the cylinder body 1 during recovery, it will not carry dust and impurities into the seal inside the end cover 41, thereby avoiding scratches on the seal by dust and impurities, preventing the hydraulic oil inside the cylinder body 1 from leaking, reducing the use effect of the hydraulic cylinder, effectively improving the service life of the seal, and reducing the use of unnecessary driving components.

[0047] like Figure 3 As shown, the anti-slip assembly 44 includes a transmission shaft 442 rotatably connected to the lower surface of the support plate 48 and a first gear 441 fixed to the outer surface of the support shaft 412, the outer surface of the transmission shaft 442 is fixedly connected to the second gear 443, and the bottom of the transmission shaft 442 is fixedly connected to a cleaning ball 444.

[0048] The first gear 441 and the transmission shaft 442 are located at the same level, the first gear 441 and the second gear 443 are meshed with each other, and the cleaning ball 444 and the extrusion assembly 45 are fitted with each other.

[0049] Wiping the surface of the cylinder rod 3 can ensure that dust does not enter the interior of the seal along with the cylinder rod 3. However, when the extrusion assembly 45 is in contact with the cylinder rod 3, friction is used as a driving force to drive the extrusion assembly 45 to rotate. However, the surface of the extrusion assembly 45 will continuously contact the dust on the surface of the cylinder rod 3, reducing the friction between the extrusion assembly 45 and the cylinder rod 3, resulting in the extrusion assembly 45 not rotating smoothly or even stopping rotating.

[0050] Therefore, at the beginning, the extrusion component 45 contacts the moving cylinder rod 3, driving the extrusion component 45 to rotate, and the extrusion component 45 drives the first gear 441 on the support shaft 412 to rotate synchronously. The first gear 441 drives the transmission shaft 442 to rotate through the second gear 443 meshing with it, and the transmission shaft 442 drives the cleaning ball 444 to rotate synchronously. The cleaning ball 444 wipes the surface of the continuously rotating extrusion component 45, and can wipe and clean the dust on the surface of the extrusion component 45, ensuring that there is always a certain friction between the extrusion component 45 and the cylinder rod 3. Because the diameters of the first gear 441 and the second gear 443 are different, the rotation speeds of the extrusion component 45 and the cleaning ball 444 are different, thereby avoiding the situation where the cleaning ball 444 cannot wipe the surface of the extrusion component 45 due to the same speed rotation.

[0051] like Figure 4 and Figure 5 As shown, the extrusion assembly 45 includes a mounting plate 451 fixed to the bottom of the support shaft 412, the lower surface of the mounting plate 451 is evenly and slidably connected with six expansion plates 453, the outer surface of the expansion plate 453 is sleeved with a rubber sleeve 452, the middle of the bottom of the mounting plate 451 is rotatably connected with a first threaded rod 454, the outer surface of the first threaded rod 454 is threadedly connected with a movable plate 455, and the outer surface of the movable plate 455 is evenly and fixedly connected with six extrusion rods 456.

[0052] Two limiting rods are slidably connected inside the moving plate 455 , and the bottoms of the limiting rods are fixedly connected to the mounting plate 451 .

[0053] With long-term work, the contact between the rubber sleeve 452 and the surface of the cylinder rod 3 will produce a certain amount of wear, resulting in a gap between the rubber sleeve 452 and the cylinder rod 3, causing the rubber sleeve 452 and the cylinder rod 3 to separate from each other and unable to rotate. When the surface of the rubber sleeve 452 is worn, the first threaded rod 454 is rotated to drive the movable plate 455 to move downward under the action of the thread, and the movable plate 455 drives the six extrusion rods 456 to move downward synchronously, so that the six extrusion rods 456 respectively squeeze the six expansion plates 453 to expand outward, and the expansion plate 453 squeezes the rubber sleeve 452, pushing the rubber sleeve 452 to deform and contact with the cylinder rod 3, so that the rubber sleeve 452 and the cylinder rod 3 are tightly squeezed, thereby increasing the friction between the cylinder rod 3 and the rubber sleeve 452, so that the expansion plate 453 and the rubber sleeve 452 can rotate more stably, and avoid the wear of the rubber sleeve 452 causing the extrusion assembly 45 to be unable to rotate.

[0054] like Figure 6 - Fig. 9As shown, the switching assembly 5 includes a fixed seat 51 fixed on the upper surface of the mounting seat 2 and an oil inlet and outlet port 511 opened at the top of the mounting seat 2, a connecting pipe 52 is fixedly connected to one side of the upper surface of the fixed seat 51, a groove 56 is opened at the edge of the lower surface of the fixed seat 51, a rotating rod 53 is rotatably connected to the middle of the upper surface of the fixed seat 51, the bottom of the rotating rod 53 extends to the inside of the fixed seat 51 and is fixedly connected to a rotating round block 510, four through holes 57 are evenly opened inside the rotating round block 510, a ring magnet 59 is fixedly connected to the top of the inner surface of the through hole 57, and a filter screen 58 is sleeved inside the through hole 57.

[0055] An identification component 54 is fixedly connected to the top of the rotating rod 53, a replacement component 55 is provided on the other side of the upper surface of the fixing seat 51, the groove 56 is located above the oil inlet and outlet 511, and the mounting seat 2 is connected to the interior of the fixing seat 51 through the oil inlet and outlet 511 and the groove 56.

[0056] When the hydraulic cylinder is opened and closed, it is necessary to control the flow of hydraulic oil in and out. The opening and closing of the hydraulic cylinder causes the piston inside to rub against the inner surface of the cylinder body 1 continuously, which will generate a large amount of debris. If the debris is not handled in time, it will accelerate the wear and scratching of the piston surface. It is necessary to effectively filter the hydraulic oil.

[0057] Therefore, the hydraulic oil enters the interior of the through hole 57 through the connecting pipe 52, and the debris inside the hydraulic oil can be blocked and filtered through the filter 58, and the impurities and debris can be concentrated inside the through hole 57. The hydraulic oil enters the interior of the through hole 57 through the oil inlet and outlet 511 and the slot 56 inside the mounting seat 2, and the impurities adhere to the outer surface of the filter 58, so that the impurities cannot move with the hydraulic oil. In the continuous flow of the hydraulic oil, the filter 58 can continuously filter and adsorb the impurities on the filter 58. When a large amount of impurities adhere to the surface of the filter 58, the fluidity of the hydraulic oil will be greatly reduced, and the filter 58 needs to be processed. At this time, the rotating rod 53 drives the rotating round block 510 to rotate inside the fixed seat 51, and the rotating round block 510 rotates ninety degrees to rotate another set of filter screens 58 and the through hole 57 to the slot 56 for use, so as to quickly and effectively replace the blocked filter screen 58, and perform seamless switching without affecting the use of the hydraulic cylinder, and the operation is simple and convenient.

[0058] like Fig.10As shown, the identification component 54 includes a switching circular plate 541 fixed on the top of the rotating rod 53 and an arc-shaped rack 544 fixed on the upper surface of the fixed seat 51 near the rotating rod 53. Four grooves 545 are evenly opened inside the switching circular plate 541. The inner surface of the groove 545 is rotatably connected to the fourth rack 543. A rotating block 542 is fixedly connected to one side of the fourth rack 543. The arc-shaped rack 544 and the fourth rack 543 are meshed with each other, and the rotating blocks 542 point to the filter screen 58 respectively and correspond one to one.

[0059] When a large amount of impurities adhere to the surface of the filter 58, the fluidity of the hydraulic oil will be greatly reduced, and the filter 58 needs to be switched. However, after the switch, the staff cannot know the usage of the four filters 58, and it is easy to mistakenly reuse the used filter 58, which is prone to problems.

[0060] When the rotating rod 53 is rotated, the switching circular plate 541 will be driven to rotate synchronously, and the switching circular plate 541 will drive the fourth rack 543 and the rotating block 542 to perform circular motion. When a set of fourth racks 543 rotate to the arc-shaped rack 544 and mesh, the fourth rack 543 rotates on its own, and the fourth rack 543 drives the rotating block 542 to rotate on its own. When the filter 58 rotates to a specified position, the rotating block 542 rotates 180 degrees at the same time to turn over. The upper and lower surfaces of the rotating block 542 can be marked with different colors, such as red and green, red represents that it has been used, and green represents that it has been used. It represents unused. When the filter 58 moves to the slot 56, the green upwards on the fourth rack 543 will rotate to red upwards, indicating that it is used. Then the rotating rod 53 is rotated to drive the filter 58 to switch, and the fourth rack 543 meshing with the arc-shaped rack 544 is moved away. The rotating block 542 does not rotate, and the red color is always upwards, indicating that the corresponding filter 58 has been used. Therefore, the staff rotates the rotating rod 53 in the correct direction according to the mark on the rotating block 542 to avoid staff misoperation and reduce the disadvantages of constantly replacing the filter 58.

[0061] like Fig.11 As shown, the replacement component 55 includes a replacement port 555 opened on the side of the fixing seat 51 away from the connecting pipe 52 and a fixing plate 553 fixed on the upper surface of the fixing seat 51, the internal thread of the fixing plate 553 is connected with the second threaded rod 554, the interior of the replacement port 555 is sleeved with a sealing cover 551, and the upper surface of the sealing cover 551 is symmetrically connected with a fixing sleeve block 552, one side of the second threaded rod 554 passes through the interior of the fixing sleeve block 552, and the outer surface of the fixing sleeve block 552 is tightly fitted with the cleaning ball 444.

[0062] When the filter 58 is completely used up, it is necessary to replace or clean the filter 58. The two second threaded rods 554 are rotated. Under the action of the threads, the second threaded rods 554 are moved out from the inside of the fixed sleeve block 552, and the squeezing of the two fixed sleeve blocks 552 is released. The two fixed sleeve blocks 552 are pulled to remove the sealing cover 551 from the inside of the replacement port 555. At this time, the filter 58 at the replacement port 555 can be exposed, and the filter 58 and the annular magnet 59 are pulled to separate from each other, and the used filter 58 is taken out. The rotating rod 53 drives the rotating round block 510 to rotate the remaining filters 58 to the replacement port 555 in turn and take them out.

[0063] Usage method: First, the movement of the cylinder rod 3 drives the extrusion assembly 45 to rotate through friction, and through transmission, the annular rack 46 and the cleaning brush 47 rotate synchronously to clean the outer surface of the cylinder rod 3. At the same time, the anti-skid assembly 44 rotates when the extrusion assembly 45 rotates to wipe the dust on the outer surface of the rubber sleeve 452 to ensure the friction between the rubber sleeve 452 and the cylinder rod 3. The internal components of the extrusion assembly 45 cooperate with each other to expand the six expansion plates 453, always ensuring that the rubber sleeve 452 is in contact with the cylinder rod 3, and ensuring the normal rotation of the six expansion plates 453;

[0064] Secondly, rotating the rotating rod 53 can rotate the rotating round block 510, which can ensure the rotation and switching of the four filters 58, reducing the number of times the filter 58 is replaced. At the same time, different colors on the rotating block 542 indicate different usage states of the filter 58, avoiding misoperation by the staff. The replacement component 55 can uniformly remove and replace all the used filters 58.

[0065] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bidirectional double-stroke hydraulic cylinder, comprising a cylinder body (1), two sides of the cylinder body (1) are fixedly connected to a mounting seat (2), the interior of the cylinder body (1) is slidably connected to two cylinder rods (3), one side of the cylinder rod (3) passes through the interior of the mounting seat (2); Features: One side of the mounting seat (2) is connected to an anti-fouling component (4) for cleaning stains on the surface of the cylinder rod (3); The anti-fouling component (4) comprises an end cover (41) fixed to one side of the mounting seat (2), an annular groove (42) is provided on one side of the end cover (41), two connecting slide bars (43) are slidably connected inside the annular groove (42), one side of the two connecting slide bars (43) is fixedly connected to an annular rack (46), the inner surface of the annular rack (46) is fixedly connected to a cleaning brush (47), one side of the end cover (41) is evenly rotatably connected to a third gear (411), one side of the third gear (411) is fixedly connected to a worm gear (410), a support plate (48) is symmetrically fixedly connected to the edge of one side of the end cover (41), the lower surface of the support plate (48) is rotatably connected to a support shaft (412), the bottom of the support shaft (412) is fixedly connected to an extrusion component (45), and the upper surface of the support shaft (412) passes through the support plate (48) and is fixedly connected to a worm gear (49).

2. A bidirectional double-stroke hydraulic cylinder according to claim 1, characterized in that: The third gear (411) and the annular rack (46) are meshed with each other, the worm (49) and the worm wheel (410) are meshed with each other, the extrusion assembly (45) is tightly fitted with the outer surface of the cylinder rod (3), the lower surface of the support plate (48) is rotatably connected to the side away from the support shaft (412) with an anti-slip assembly (44), and the upper surface of the mounting seat (2) is fixedly connected to a switching assembly (5).

3. A bidirectional double-stroke hydraulic cylinder according to claim 2, characterized in that: The anti-skid assembly (44) comprises a transmission shaft (442) rotatably connected to the lower surface of the support plate (48) and a first gear (441) fixed to the outer surface of the support shaft (412); a second gear (443) is fixedly connected to the outer surface of the transmission shaft (442); and a cleaning ball (444) is fixedly connected to the bottom of the transmission shaft (442).

4. A bidirectional double-stroke hydraulic cylinder according to claim 3, characterized in that: The first gear (441) and the transmission shaft (442) are located at the same horizontal height, the first gear (441) and the second gear (443) are meshed with each other, and the cleaning ball (444) and the extrusion assembly (45) are in contact with each other.

5. A bidirectional double-stroke hydraulic cylinder according to claim 4, characterized in that: The extrusion assembly (45) comprises a mounting plate (451) fixed at the bottom of the support shaft (412); six expansion plates (453) are evenly and slidably connected to the lower surface of the mounting plate (451); a rubber sleeve (452) is sleeved on the outer surface of the expansion plate (453); a first threaded rod (454) is rotatably connected to the middle of the bottom of the mounting plate (451); a movable plate (455) is threadedly connected to the outer surface of the first threaded rod (454); and six extrusion rods (456) are evenly and fixedly connected to the outer surface of the movable plate (455).

6. A bidirectional double-stroke hydraulic cylinder according to claim 5, characterized in that: Two limiting rods are slidably connected inside the movable plate (455), and the bottoms of the limiting rods are fixedly connected to the mounting plate (451).

7. A bidirectional and double-stroke hydraulic cylinder according to claim 6, characterized in that: The switching assembly (5) comprises a fixing seat (51) fixed on the upper surface of the mounting seat (2) and an oil inlet and outlet (511) provided at the top of the mounting seat (2); a connecting pipe (52) is fixedly connected to one side of the upper surface of the fixing seat (51); a slot (56) is provided at the edge of the lower surface of the fixing seat (51); a rotating rod (53) is rotatably connected to the middle of the upper surface of the fixing seat (51); the bottom of the rotating rod (53) extends to the inside of the fixing seat (51) and is fixedly connected to a rotating round block (510); four through holes (57) are evenly provided inside the rotating round block (510); a ring magnet (59) is fixedly connected to the top of the inner surface of the through hole (57); and a filter screen (58) is sleeved inside the through hole (57).

8. A bidirectional and double-stroke hydraulic cylinder according to claim 7, characterized in that: The top of the rotating rod (53) is fixedly connected with an identification component (54), the other side of the upper surface of the fixing seat (51) is provided with a replacement component (55), the slot (56) is located above the oil inlet and outlet (511), and the mounting seat (2) is connected to the interior of the fixing seat (51) through the oil inlet and outlet (511) and the slot (56).

9. A bidirectional double-stroke hydraulic cylinder according to claim 8, characterized in that: The identification component (54) comprises a switching circular plate (541) fixed on the top of the rotating rod (53) and an arc-shaped rack (544) fixed on the upper surface of the fixed seat (51) near the rotating rod (53); four grooves (545) are evenly arranged inside the switching circular plate (541); a fourth rack (543) is rotatably connected to the inner surface of the groove (545); a rotating block (542) is fixedly connected to one side of the fourth rack (543); the arc-shaped rack (544) and the fourth rack (543) are meshed with each other; and the rotating blocks (542) respectively point to the filter screen (58) and correspond one to one.

10. A bidirectional and double-stroke hydraulic cylinder according to claim 9, characterized in that: The replacement assembly (55) comprises a replacement port (555) opened on a side of the fixing seat (51) away from the connecting pipe (52) and a fixing plate (553) fixed on the upper surface of the fixing seat (51); the internal thread of the fixing plate (553) is connected to a second threaded rod (554); the interior of the replacement port (555) is sleeved with a sealing cover (551); the upper surface of the sealing cover (551) is symmetrically connected to a fixing sleeve block (552); one side of the second threaded rod (554) passes through the interior of the fixing sleeve block (552); and the outer surface of the fixing sleeve block (552) is tightly fitted with the cleaning ball (444).

Images