A hydraulic cylinder cleaning device

Abstract

The present invention relates to the technical field of cleaning devices, and discloses a hydraulic cylinder cleaning device, which includes an ultrasonic cleaning machine and a cylinder block. A support frame is fixedly installed at the top of the ultrasonic cleaning machine, and a hydraulic telescopic rod is fixedly installed at the top of the support frame. An adjustment mechanism is installed at the telescopic end of the bottom of the hydraulic telescopic rod. The adjustment mechanism includes a lifting frame fixedly installed at the telescopic end of the hydraulic telescopic rod. By setting the adjustment mechanism, the cylinder block is driven to enter and exit the ultrasonic cleaning machine, and at the same time, the cylinder block can be driven to continuously flip during the cleaning process, so that the cylinder block changes back and forth between the vertical state and the horizontal state, avoiding the residue remaining inside the cylinder block after cleaning, and improving the thoroughness of the equipment for cleaning the cylinder block.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning devices, and particularly to a hydraulic cylinder cleaning device. Background Art

[0002] A hydraulic cylinder is an actuator in a hydraulic transmission system, which is an energy conversion device that converts hydraulic energy into mechanical energy. A hydraulic motor realizes continuous rotary motion, while a hydraulic cylinder realizes reciprocating motion. The structural forms of hydraulic cylinders are divided into three categories: piston cylinders, plunger cylinders, and swing cylinders. Piston cylinders and plunger cylinders realize reciprocating linear motion, outputting speed and thrust, and swing cylinders realize reciprocating swing, outputting angular velocity (rotation speed) and torque. In addition to being used individually, hydraulic cylinders can also be combined in two or more units or combined with other mechanisms to complete special functions. Hydraulic cylinders have a simple structure and reliable operation, and are widely used in the hydraulic systems of machine tools.

[0003] In the prior art, an ultrasonic cleaning device for an oil cylinder barrel (publication number: CN214516643U) can facilitate the immersion of the oil cylinder in the cleaning liquid and rotation during the cleaning process, thereby improving the cleaning effect. However, the cylinder body of this device is always horizontally placed, which is likely to cause residues in the cylinder barrel, resulting in incomplete cleaning. Therefore, there is an urgent need to design a hydraulic cylinder cleaning device with more thorough cleaning. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies in the prior art and propose a hydraulic cylinder cleaning device.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A hydraulic cylinder cleaning device includes an ultrasonic cleaning machine and an oil cylinder body. A support frame is fixedly installed at the top of the ultrasonic cleaning machine, and a hydraulic telescopic rod is fixedly installed at the top of the support frame. An adjustment mechanism is installed at the telescopic end of the bottom of the hydraulic telescopic rod. The adjustment mechanism includes a lifting frame fixedly installed at the telescopic end of the hydraulic telescopic rod. The lifting frame has a U-shaped structure with an opening facing downwards. A placement block for carrying the oil cylinder body is rotatably installed between the two bottom ends of the lifting frame. Square groove holes are formed on the surface of the placement block, and two first stepped holes and four second stepped holes are symmetrically formed around the square groove holes. An auxiliary positioning mechanism is provided in each first stepped hole, and a clamping mechanism is provided in each second stepped hole.

[0007] As a further solution of the present invention, a dual-axis motor is fixedly installed at the top of the lifting frame. Two sprockets are symmetrically and rotatably installed on two opposite sides of the lifting frame. The rotation centers of the two sprockets are respectively connected to an output end of the dual-axis motor and the rotation center of the placing block through connecting shafts, and a chain is sleeved between the two sprockets.

[0008] As a further solution of the present invention, two first avoidance grooves are symmetrically formed on the inner side of the lifting frame. Unlocking strips are fixedly installed near the lower part of the first avoidance grooves on the inner side of the lifting frame. Each of the first avoidance grooves and the unlocking strips is in an arc structure, and each unlocking strip is inclined between the side close to the first avoidance groove and the inner wall of the lifting frame.

[0009] As a further solution of the present invention, the clamping mechanism includes a clamping block, a top rod, a sealing cover and a convex block. The top rod is slidably installed in the corresponding second stepped hole. The clamping block is fixedly installed at one end of the top rod close to the square groove hole. Two second avoidance grooves are symmetrically formed on two opposite sides of the placing block, and each second avoidance groove communicates with the corresponding second stepped hole. The sealing cover is fixedly installed in the hole opening at one end of the corresponding second stepped hole away from the square groove hole. A second return spring is fixedly installed on one side of the sealing cover close to the second stepped hole. One end of the top rod passes through the second return spring and the outer surface of the sealing cover and is fixedly installed with one side of the convex block.

[0010] As a further solution of the present invention, a groove adapted to the outer diameter of the cylinder body of the oil cylinder is formed on one side of the clamping block. Both ends of the clamping block close to the groove are in an inclined surface structure. The top rod is in an axially shoulder column structure. One end of the second return spring away from the sealing cover abuts against the shoulder of the top rod. A guiding groove is formed on one side of the convex block close to the lifting frame.

[0011] As a further solution of the present invention, the auxiliary positioning mechanism includes a movable cylinder. One end of the movable cylinder is in an open shape and is in a stepped shaft structure. A pull ring is fixedly installed at the other end of the movable cylinder. The movable cylinder is slidably installed in the first stepped hole. A first return spring is sleeved on the surface of the movable cylinder, and both ends of the first return spring respectively abut against the movable cylinder and the inner wall of the first stepped hole. Four movable holes are evenly formed on the surface of the movable cylinder in a circumferential manner, and a plurality of stoppers are fixedly installed on the surface of the movable cylinder in a circumferential manner.

[0012] As a further solution of the present invention, a movable shaft is slidably installed in each of the movable holes. An arc-shaped block is fixedly installed at one end of each movable shaft away from the movable cylinder. Anti-slip patterns are formed on one side of the arc-shaped block away from the movable cylinder. A weight block in an axially shoulder column structure is slidably installed in the movable cylinder.

[0013] As a further solution of the present invention, a connecting rod is rotatably installed at the other end of each of the movable shafts. A chute in a cross-shaped structure is formed on the side of the counterweight block close to the movable hole. Four sliders are slidably installed in the chute in a circumferentially uniform manner. One side of each slider is rotatably installed with one end of the corresponding connecting rod. A blocking block is detachably and fixedly installed in the open end of the movable cylinder.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] By providing an adjustment mechanism, firstly, it is used to drive the cylinder block of the oil cylinder in and out of the ultrasonic cleaning machine, and secondly, it can drive the cylinder block of the oil cylinder to continuously flip during the cleaning process, so that the cylinder block of the oil cylinder changes back and forth between a vertical state and a horizontal state, avoiding the residue remaining inside the cylinder block of the oil cylinder after cleaning, and improving the thoroughness of the equipment for cleaning the cylinder block of the oil cylinder;

[0016] By providing a clamping mechanism, the cylinder block of the oil cylinder can be clamped and fixed, so that it follows the placement block and flips in the lifting frame. An unlocking strip is provided. During the flipping process of the placement block, when the convex block passes through the unlocking strip, it is pushed by the unlocking strip, pulling the ejector rod away from the placement block, thereby releasing the clamping of the corresponding clamping block on the cylinder block of the oil cylinder, so that the clamped part on the outer surface of the cylinder block of the oil cylinder can be cleaned, and the thoroughness of the equipment for cleaning the outer wall of the cylinder block of the oil cylinder is improved;

[0017] By providing an auxiliary positioning mechanism, this mechanism can not only be used to position the cylinder block of the oil cylinder during installation, but also can limit the cylinder block of the oil cylinder from the inside of one end of the cylinder block of the oil cylinder when the unlocking strip releases the corresponding clamping block and loosens the cylinder block of the oil cylinder, avoiding the instability of the cylinder block of the oil cylinder and tipping over after the clamping block leaves, improving the stability of the equipment during the cleaning process. When the pulled convex block leaves the first avoidance groove, the corresponding clamping block resets under the action of the second return spring and drives the clamping block to clamp the cylinder block of the oil cylinder. As the placement block flips, the auxiliary positioning mechanism against the inner surface of the cylinder block of the oil cylinder releases the abutment against the inner wall of the cylinder block of the oil cylinder under the action of gravity, thereby avoiding cleaning dead corners on the inner wall and improving the thoroughness of the equipment for cleaning the inner wall of the cylinder block of the oil cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a hydraulic cylinder cleaning device proposed by the present invention;

[0019] Figure 2 It is a schematic structural diagram of the adjustment mechanism of a hydraulic cylinder cleaning device proposed by the present invention;

[0020] Figure 3 It is Figure 2 an enlarged structural diagram of part A in

[0021] Figure 4 It is a schematic partial cross-sectional structure diagram of the adjustment mechanism of a hydraulic cylinder cleaning device proposed by the present invention;

[0022] Figure 5 For Figure 3 The enlarged structural schematic diagram of part B in

[0023] Figure 6 The structural schematic diagram of the auxiliary positioning mechanism of a hydraulic cylinder cleaning device proposed by the present invention;

[0024] Figure 7 The structural schematic diagram of the movable cylinder of a hydraulic cylinder cleaning device proposed by the present invention;

[0025] Figure 8 The structural schematic diagram of the clamping mechanism of a hydraulic cylinder cleaning device proposed by the present invention;

[0026] Figure 9 The structural schematic diagram of the convex block of a hydraulic cylinder cleaning device proposed by the present invention;

[0027] Figure 10 The structural schematic diagram of the sealing cover of a hydraulic cylinder cleaning device proposed by the present invention;

[0028] Figure 11 The structural schematic diagram of the object placing block of a hydraulic cylinder cleaning device proposed by the present invention.

[0029] In the figure: 1. Ultrasonic cleaning machine; 2. Support frame; 3. Hydraulic telescopic rod; 4. Adjusting mechanism; 5. Cylinder block; 6. Auxiliary positioning mechanism; 7. Clamping mechanism; 401. Lifting frame; 402. Biaxial motor; 403. Sprocket; 404. Chain; 405. First avoidance groove; 406. Unlocking bar; 407. Object placing block; 408. First stepped hole; 409. Second avoidance groove; 410. Second stepped hole; 411. Square slot hole; 601. Movable cylinder; 602. Pulling ring; 603. First return spring; 604. Block; 605. Arc-shaped block; 606. Counterweight; 607. Chute; 608. Slide block; 609. Connecting rod; 610. Movable shaft; 611. Movable hole; 612. Plug; 701. Clamping block; 702. Thrust rod; 703. Second return spring; 704. Sealing cover; 705. Convex block; 706. Guide groove. Detailed implementation manners

[0030] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with the detailed implementation manners.

[0031] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "back end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "equipped with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Referring to Figures 1-11 , a hydraulic cylinder cleaning device includes an ultrasonic cleaning machine 1 and a cylinder block 5. A support frame 2 is fixedly installed at the top of the ultrasonic cleaning machine 1. A hydraulic telescopic rod 3 is fixedly installed at the top of the support frame 2. An adjustment mechanism 4 is installed at the telescopic end of the bottom of the hydraulic telescopic rod 3. The adjustment mechanism 4 includes a lifting frame 401 fixedly installed at the telescopic end of the hydraulic telescopic rod 3. The lifting frame 401 is in a U-shaped structure with an opening facing downwards. A storage block 407 for carrying the cylinder block 5 is rotatably installed between the two bottom ends of the lifting frame 401. Square groove holes 411 are formed on the surface of the storage block 407. Two first stepped holes 408 and four second stepped holes 410 are symmetrically formed around the square groove holes 411. An auxiliary positioning mechanism 6 is provided in each first stepped hole 408, and a clamping mechanism 7 is provided in each second stepped hole 410. The cylinder block 5 is clamped and fixed by setting the auxiliary positioning mechanism 6 and the clamping mechanism 7. Then, the cylinder block 5 is driven in and out of the ultrasonic cleaning machine 1 by the adjustment mechanism 4, and the cylinder block 5 can be driven to continuously flip during the cleaning process, so that the cylinder block 5 changes back and forth between a vertical state and a horizontal state, avoiding the residue after cleaning from remaining inside the cylinder block 5 and improving the thoroughness of the equipment for cleaning the cylinder block 5.

[0034] In this embodiment, a dual-axis motor 402 is fixedly installed at the top of the lifting frame 401. Two chain wheels 403 are symmetrically and rotatably installed on two opposite sides of the lifting frame 401. The rotation centers of the two chain wheels 403 are respectively connected to an output end of the dual-axis motor 402 and the rotation center of the object placement block 407 through connecting shafts. A chain 404 is sleeved between the two chain wheels 403. Two first avoidance grooves 405 are symmetrically formed on the inner side of the lifting frame 401. Unlocking strips 406 are fixedly installed near the lower part of each first avoidance groove 405 on the inner side of the lifting frame 401. Each first avoidance groove 405 and unlocking strip 406 are of an arc structure. On one side of each unlocking strip 406 close to the first avoidance groove 405, it is inclined with respect to the inner wall of the lifting frame 401.

[0035] During use, the chain wheel 403 located at the top of the lifting frame 401 is driven to rotate by the dual-axis motor 402, and then the chain wheel 403 located below the lifting frame 401 is driven to rotate through the chain 404, thereby driving the object placement block 407 to rotate. The object placement block 407 drives the cylinder block 5 to rotate while being cleaned inside the ultrasonic cleaning machine 1, improving the thoroughness of the cleaning of the cylinder block 5.

[0036] In this embodiment, the clamping mechanism 7 includes a clamping block 701, a push rod 702, a sealing cover 704, and a convex block 705. The push rod 702 is slidably installed in the corresponding second stepped hole 410. The clamping block 701 is fixedly installed at one end of the push rod 702 close to the square slot hole 411. Two second avoidance grooves 409 are symmetrically formed on two opposite sides of the object placement block 407. Each second avoidance groove 409 communicates with the corresponding second stepped hole 410. The sealing cover 704 is fixedly installed in the hole opening at one end of the corresponding second stepped hole 410 away from the square slot hole 411. A second return spring 703 is fixedly installed on one side of the sealing cover 704 close to the second stepped hole 410. One end of the push rod 702 passes through the outer surfaces of the second return spring 703 and the sealing cover 704 and is fixedly installed with one side of the convex block 705. A groove adapted to the outer diameter of the cylinder block 5 is formed on one side of the clamping block 701. Both ends on one side of the clamping block 701 close to the groove are of an inclined surface structure. The push rod 702 is of an axially shoulder column structure. The end of the second return spring 703 away from the sealing cover 704 abuts against the axial shoulder of the push rod 702. A guiding groove 706 is formed on one side of the convex block 705 close to the lifting frame 401.

[0037] During use, the storage block 407 is adjusted to a horizontal state. Then, the cylinder block 5 of the oil cylinder is pushed into the groove opened in the clamping block 701 from the bottom of the clamping block 701. Then, by the elastic force of the second return spring 703 in the clamping mechanism 7, the clamping block 701 is driven to clamp and fix the outer wall of the cylinder block 5 of the oil cylinder, so that it follows the storage block 407 to flip in the lifting frame 401. An unlocking strip 406 is provided. During the flipping process of the storage block 407, when the convex block 705 passes through the unlocking strip 406, it is pushed by the unlocking strip 406. Then, the ejector rod 702 is pulled away from the storage block 407 through the convex block 705, thereby releasing the clamping of the corresponding clamping block 701 on the cylinder block 5 of the oil cylinder, so that the clamped part on the outer surface of the cylinder block 5 of the oil cylinder can be cleaned, improving the thoroughness of the equipment for cleaning the outer wall of the cylinder block 5 of the oil cylinder.

[0038] In this embodiment, the auxiliary positioning mechanism 6 includes a movable cylinder 601. One end of the movable cylinder 601 is open and has a stepped shaft structure. A pull ring 602 is fixedly installed at the other end of the movable cylinder 601. The movable cylinder 601 is slidably installed in the first stepped hole 408. A first return spring 603 is sleeved on the surface of the movable cylinder 601. Both ends of the first return spring 603 are abutted against the inner wall of the movable cylinder 601 and the first stepped hole 408 respectively. Four movable holes 611 are evenly formed in a circular pattern on the surface of the movable cylinder 601. A plurality of stoppers 604 are fixedly installed on the surface of the movable cylinder 601 in a circular pattern. An activity shaft 610 is slidably installed in each of the movable holes 611. An arc-shaped block 605 is fixedly installed at one end of each activity shaft 610 away from the movable cylinder 601. Anti-slip patterns are provided on the side of the arc-shaped block 605 away from the movable cylinder 601. A counterweight block 606 having a shoulder column structure is slidably installed in the movable cylinder 601. A cross-shaped chute 607 is formed in the side of the counterweight block 606 close to the movable hole 611. Four sliders 608 are evenly slidably installed in a circular pattern in the chute 607. One side of each slider 608 is rotatably installed with one end of the corresponding connecting rod 609. A plug block 612 is detachably and fixedly installed in the open end of the movable cylinder 601.

[0039] During use, by setting the auxiliary positioning mechanism 6, it can not only be used to position the cylinder block 5 of the oil cylinder during installation, but also limit the cylinder block 5 of the oil cylinder from the inside of the upper end of the cylinder block 5 of the oil cylinder when the unlocking strip 406 releases the corresponding clamping block 701 to loosen the cylinder block 5 of the oil cylinder, avoiding the instability of the cylinder block 5 of the oil cylinder from tipping over after the clamping block 701 leaves, improving the stability of the equipment cleaning process. When performing auxiliary limiting, when the auxiliary positioning mechanism 6 rotates to the upper part of the equipment, at this time, under the action of gravity, the counterweight block 606 slides downward, further driving a plurality of sliders 607 to slide in the chute 607, and then driving the movable shaft 610 to slide out of the movable cylinder 601 through the connecting rod 702, and then driving the arc-shaped block 605 to abut against the inner wall surface of the cylinder block 5 of the oil cylinder, realizing the auxiliary limit of the cylinder block 5 of the oil cylinder. The first return spring 603 and the second return spring 703 are made of compression springs with a spring force much greater than the gravity of the cylinder block 5 of the oil cylinder, improving the stability of the auxiliary positioning mechanism 6 and the clamping mechanism 7 in the clamping process of the equipment;

[0040] When the pulled convex block 705 leaves the first avoidance groove 405, the corresponding clamping block 701 is reset under the action of the second return spring 703 and drives the clamping block 701 to clamp the outer surface of the cylinder block 5 of the oil cylinder. Then, when the auxiliary positioning mechanism 6 against the inner wall of the cylinder block 5 of the oil cylinder rotates over the horizontal line along with the placing block 407, the counterweight block 606 slides away from the cylinder block 5 of the oil cylinder, further driving the arc-shaped block 605 to release the limit on the inner wall of the cylinder block 5 of the oil cylinder, thereby avoiding cleaning dead corners on the inner wall and improving the thoroughness of the equipment for cleaning the inner wall of the cylinder block 5 of the oil cylinder.

[0041] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: During use, the hydraulic telescopic rod 3 drives the lifting frame 401 to rise, driving the placement block 407 to be lifted horizontally above the ultrasonic cleaner 1. Then, the cylinder block 5 to be cleaned is placed into the square slot hole 411 from below the placement block 407. First, the clamping blocks 701 on both sides are pushed to slide to both sides until the cylinder block 5 enters the grooves formed in the clamping blocks 701. Then, the second return spring 703 drives the ejector rod 702 to slide towards the cylinder block 5, so that the plurality of clamping blocks 701 clamp and fix the outer surface of the cylinder block 5. At the same time, both ends of the cylinder block 5 are sleeved on the surfaces of the two auxiliary positioning mechanisms 6. The auxiliary positioning mechanisms 6 position the cylinder block 5, making the center of gravity of the cylinder block 5 near the rotation center of the placement block 407, improving the stability of the equipment drive output. Then, the lifting frame 401 is lowered to drive the cylinder block 5 into the ultrasonic cleaner 1 for cleaning. During the cleaning process, the adjustment mechanism 4 drives the cylinder block 5 to flip. During the flipping process, whenever one end of the cylinder block 5 rotates to the first avoidance groove 405, the two clamping blocks 701 clamping one end of the cylinder block 5 are separated from the cylinder block 5, facilitating the cleaning of the clamping area. At this time, the counterweight block 606 in the auxiliary positioning mechanism 6 automatically slides down to drive the arc-shaped block 605 to tightly press against the inner wall of the cylinder block 5, improving the stability of the equipment during the cleaning process. As the auxiliary positioning mechanism 6 rotates to the lower side, the counterweight block 606 slides away from the cylinder block 5, driving the arc-shaped block 605 to separate from the inner wall of the cylinder block 5, avoiding cleaning dead corners at the internal clamping area, and further improving the thoroughness of the equipment for cleaning the cylinder block 5.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder cleaning device, comprising an ultrasonic cleaning machine (1) and a cylinder block (5), characterized in that, A support frame (2) is fixedly installed at the top of the ultrasonic cleaning machine (1). A hydraulic telescopic rod (3) is fixedly installed at the top of the support frame (2). An adjusting mechanism (4) is installed at the telescopic end of the bottom of the hydraulic telescopic rod (3). The adjusting mechanism (4) includes a lifting frame (401) fixedly installed at the telescopic end of the hydraulic telescopic rod (3). The lifting frame (401) is in a U-shaped structure with an opening facing downwards. A placing block (407) for carrying the cylinder block (5) is rotatably installed between the two bottom ends of the lifting frame (401). Square groove holes (411) are formed on the surface of the placing block (407). Two first stepped holes (408) and four second stepped holes (410) are symmetrically formed around the square groove holes (411). An auxiliary positioning mechanism (6) is arranged in each of the first stepped holes (408). A clamping mechanism (7) is arranged in each of the second stepped holes (410). A double-shaft motor (402) is fixedly installed at the top of the lifting frame (401). Two chain wheels (403) are symmetrically and rotatably installed on two opposite sides of the lifting frame (401). The rotation centers of the two chain wheels (403) are respectively connected to an output end of the double-shaft motor (402) and the rotation center of the placing block (407) through connecting shafts. A chain (404) is sleeved between the two chain wheels (403). Two first avoidance grooves (405) are symmetrically formed on the inner side of the lifting frame (401). Unlocking strips (406) are fixedly installed on the inner side of the lifting frame (401) close to the lower part of the first avoidance grooves (405). Each of the first avoidance grooves (405) and the unlocking strips (406) is in an arc structure. On one side of each unlocking strip (406) close to the first avoidance groove (405), it is inclined with the inner wall of the lifting frame (401).

2. The hydraulic cylinder cleaning device according to claim 1, characterized in that, The clamping mechanism (7) includes a clamping block (701), a push rod (702), a sealing cover (704) and a convex block (705). The push rod (702) is slidably installed in the corresponding second stepped hole (410). The clamping block (701) is fixedly installed at one end of the push rod (702) close to the square groove hole (411). Two second avoidance grooves (409) are symmetrically formed on two opposite sides of the placing block (407). Each of the second avoidance grooves (409) communicates with the corresponding second stepped hole (410). The sealing cover (704) is fixedly installed in the hole opening at one end of the corresponding second stepped hole (410) far from the square groove hole (411). A second return spring (703) is fixedly installed on one side of the sealing cover (704) close to the second stepped hole (410). One end of the push rod (702) passes through the outer surfaces of the second return spring (703) and the sealing cover (704) and is fixedly installed with one side of the convex block (705).

3. A hydraulic cylinder cleaning device according to claim 2, characterized in that, On one side of the clamping block (701), a groove adapted to the outer diameter of the cylinder block (5) of the oil cylinder is provided. At both ends of the clamping block (701) near the groove side, inclined surface structures are provided. The ejector rod (702) has a shoulder column structure. One end of the second return spring (703) away from the sealing cover (704) abuts against the shoulder of the ejector rod (702). On the side of the convex block (705) close to the lifting frame (401), a guiding groove (706) is provided.

4. A hydraulic cylinder cleaning device according to claim 1, characterized in that, The auxiliary positioning mechanism (6) includes a movable cylinder (601). One end of the movable cylinder (601) has an open shape and a stepped shaft structure. A pull ring (602) is fixedly installed at the other end of the movable cylinder (601). The movable cylinder (601) is slidably installed in the first stepped hole (408). A first return spring (603) is sleeved on the surface of the movable cylinder (601). Both ends of the first return spring (603) abut against the inner wall of the movable cylinder (601) and the first stepped hole (408) respectively. Four movable holes (611) are evenly arranged in a circle on the surface of the movable cylinder (601). A plurality of stoppers (604) are fixedly installed in a circle on the surface of the movable cylinder (601).

5. A hydraulic cylinder cleaning device according to claim 4, characterized in that, An activity shaft (610) is slidably installed in each of the activity holes (611). An arc-shaped block (605) is fixedly installed at one end of each activity shaft (610) away from the movable cylinder (601). Anti-slip patterns are provided on the side of the arc-shaped block (605) away from the movable cylinder (601). A counterweight block (606) with a shoulder column structure is slidably installed in the movable cylinder (601).

6. The hydraulic cylinder cleaning device according to claim 5, characterized in that, A connecting rod (609) is rotatably installed at the other end of each activity shaft (610). A chute (607) with a cross-shaped structure is provided on the side of the counterweight block (606) close to the activity hole (611). Four sliders (608) are evenly slidably installed in a circle in the chute (607). One side of each slider (608) is rotatably installed with one end of the corresponding connecting rod (609). A plug block (612) is detachably and fixedly installed in the open end of the movable cylinder (601).

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