Hydraulic oil cylinder cleaning device

Abstract

The invention relates to the technical field of cleaning devices, and discloses a hydraulic oil cylinder cleaning device which comprises an ultrasonic cleaning machine and an oil cylinder body, a supporting frame is fixedly installed at the top of the ultrasonic cleaning machine, a hydraulic telescopic rod is fixedly installed at the top of the supporting frame, and an adjusting mechanism is installed at the telescopic end of the bottom of the hydraulic telescopic rod. The adjusting mechanism comprises a lifting frame fixedly installed at the telescopic end of the hydraulic telescopic rod. By arranging the adjusting mechanism, the oil cylinder body is driven to enter and exit from the ultrasonic cleaning machine, and meanwhile the oil cylinder body can be driven to continuously turn over in the cleaning process, so that the oil cylinder body is switched back and forth between the vertical state and the horizontal state, and residues after cleaning are prevented from remaining in the oil cylinder body; and the thoroughness of cleaning the cylinder body of the oil cylinder by the equipment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning devices, and particularly relates 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 achieves continuous rotary motion, while a hydraulic cylinder achieves 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 achieve reciprocating linear motion, outputting speed and thrust, and swing cylinders achieve reciprocating swing, outputting angular velocity (rotational 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 perform 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 in this device is always horizontally placed, which is likely to have 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: A hydraulic cylinder cleaning device includes an ultrasonic cleaning machine and an oil cylinder body. A support frame is fixedly installed on the top of the ultrasonic cleaning machine. A hydraulic telescopic rod is fixedly installed on the top of the support frame. An adjustment mechanism is installed at the telescopic end 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 placing 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 placing block. 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.

[0006] As a further solution of the present invention, a double-shaft motor is fixedly installed on 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 double-shaft motor and the rotation center of the placing block through connecting shafts. A chain is sleeved between the two sprockets.

[0007] As a further solution of the present invention, two first avoidance grooves are symmetrically opened on the inner side of the lifting frame, and unlocking strips are fixedly installed on the inner side of the lifting frame near the bottom of the first avoidance grooves. Each of the first avoidance grooves and unlocking strips has an arc-shaped structure, and each of the unlocking strips is inclined to the inner wall of the lifting frame on one side near the first avoidance groove.

[0008] As a further solution of the present invention, the clamping mechanism includes a clamping block, a push rod, a sealing cover and a protrusion, the push rod is slidably installed in the corresponding second step hole, the clamping block is fixedly installed at the end of the push rod close to the square slot hole, the two opposite sides of the storage block are symmetrically opened and each of the second avoidance grooves is connected to the corresponding second step hole, the sealing cover is fixedly installed in the hole opening of the corresponding second step hole away from the square slot hole, the sealing cover is fixedly installed on the side close to the second step hole with a second return spring, one end of the push rod passes through the second return spring and the outer surface of the sealing cover and is fixedly installed to one side of the protrusion.

[0009] As a further solution of the present invention, a groove adapted to the outer diameter of the cylinder body is provided on one side of the clamping block, both ends of the clamping block close to the groove are provided with inclined structures, the push rod is a shoulder column structure, the end of the second return spring away from the sealing cover is against the shoulder of the push rod, and a guide groove is provided on the side of the protrusion close to the lifting frame.

[0010] As a further solution of the present invention, the auxiliary positioning mechanism includes a movable cylinder, one end of the movable cylinder is open and has a stepped shaft structure, and the other end of the movable cylinder is fixedly installed with a pull ring. The movable cylinder is slidably installed in the first stepped hole, and a first return spring is sleeved on the surface of the movable cylinder. The two ends of the first return spring are respectively abutted against the movable cylinder and the inner wall of the first stepped hole, and four movable holes are evenly opened on the surface of the movable cylinder in a circumferential manner, and a plurality of blocks are fixedly installed on the surface of the movable cylinder in a circumferential manner.

[0011] As a further solution of the present invention, a movable shaft is slidably installed in each of the movable holes, an arc block is fixedly installed at one end of each movable shaft away from the movable cylinder, an anti-slip pattern is provided on the side of the arc block away from the movable cylinder, and a counterweight block with a shoulder column structure is slidably installed in the movable cylinder.

[0012] As a further solution of the present invention, a connecting rod is rotatably installed at the other end of each movable shaft, and a sliding groove with a cross-shaped structure is opened on the side of the counterweight block close to the movable hole. Four sliding blocks are installed in a circular and evenly sliding manner in the sliding groove, and one side of each slider is rotatably installed with one end of the corresponding connecting rod, and a blocking block is detachably fixedly installed in the opening of the movable cylinder.

[0013] Compared with the prior art, the present invention has the following beneficial effects: By setting up the adjustment mechanism, firstly, it is used to drive the oil cylinder body in and out of the ultrasonic cleaning machine, and secondly, it can drive the oil cylinder body to continuously flip during the cleaning process, so that the oil cylinder body is switched back and forth between the vertical state and the horizontal state, avoiding the residue after cleaning to remain inside the oil cylinder body, thereby improving the thoroughness of the equipment in cleaning the oil cylinder body; The clamping mechanism can be provided to clamp and fix the cylinder body, so that it can be turned over in the lifting frame along with the storage block. An unlocking bar is provided. When the storage block is turned over, the protruding block is pushed by the unlocking bar when passing through the unlocking bar, and the push rod is pulled away from the storage block, thereby releasing the clamping of the corresponding clamping block on the cylinder body, so that the clamping part of the outer surface of the cylinder body can be cleaned, thereby improving the thoroughness of the equipment in cleaning the outer wall of the cylinder body; By setting an auxiliary positioning mechanism, the mechanism can not only be used to position the cylinder body when installing it, but also can limit the cylinder body from the inside of one end of the cylinder body when the unlocking bar releases the corresponding clamping block to loosen the cylinder body, to avoid the cylinder body from being unstable and tipping over after the clamping block leaves, thereby improving the stability of the equipment cleaning process; when the pulled protrusion leaves the first avoidance groove, the corresponding clamping block is reset under the action of the second reset spring and drives the clamping block to clamp the cylinder body; as the placement block flips, the auxiliary positioning mechanism against the inner surface of the cylinder body releases its contact with the inner wall of the cylinder under the action of gravity, thereby avoiding the existence of cleaning dead corners on the inner wall, thereby improving the thoroughness of the equipment in cleaning the inner wall of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a hydraulic cylinder cleaning device proposed by the present invention; Figure 2 A schematic diagram of the structure of the adjustment mechanism of a hydraulic cylinder cleaning device proposed by the present invention; Figure 3 for Figure 2 A schematic diagram of the enlarged structure of part A; Figure 4 A partial cross-sectional structural schematic diagram of an adjustment mechanism of a hydraulic cylinder cleaning device proposed by the present invention; Figure 5 for Figure 3 A schematic diagram of the enlarged structure of part B; Figure 6 A schematic diagram of the structure of an auxiliary positioning mechanism of a hydraulic cylinder cleaning device proposed by the present invention; Figure 7 A schematic diagram of the structure of a movable cylinder of a hydraulic cylinder cleaning device proposed by the present invention; Figure 8 A schematic diagram of the structure of a clamping mechanism of a hydraulic cylinder cleaning device proposed by the present invention; Fig. 9A schematic diagram of the convex structure of a hydraulic cylinder cleaning device proposed by the present invention; Fig.10 A schematic diagram of the sealing cover structure of a hydraulic cylinder cleaning device proposed by the present invention; Fig.11 This is a schematic diagram of the structure of a storage block of a hydraulic cylinder cleaning device proposed by the present invention.

[0015] In the figure: 1, ultrasonic cleaning machine; 2, support frame; 3, hydraulic telescopic rod; 4, adjustment mechanism; 5, cylinder body; 6, auxiliary positioning mechanism; 7, clamping mechanism; 401, lifting frame; 402, double-axis motor; 403, tooth plate; 404, chain; 405, first avoidance groove; 406, unlocking strip; 407, storage block; 408, first step hole; 409, second avoidance groove; 410, second step hole; 411 , square slot hole; 601, movable cylinder; 602, pull ring; 603, first return spring; 604, stopper; 605, arc block; 606, counterweight block; 607, slide groove; 608, slider; 609, connecting rod; 610, movable shaft; 611, movable hole; 612, blocking block; 701, clamping block; 702, push rod; 703, second return spring; 704, sealing cover; 705, protrusion; 706, guide groove. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0017] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] Reference Figure 1-Figure 11 , a hydraulic cylinder cleaning device, including 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 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 first stepped hole 408, and a clamping mechanism 7 is arranged 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, and then the cylinder block 5 is driven by the adjusting mechanism 4 to enter and exit the ultrasonic cleaning machine 1. At the same time, 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.

[0020] In this embodiment, a double-shaft motor 402 is fixedly installed at the top of the lifting frame 401. Two sprockets 403 are symmetrically and rotatably installed on two opposite sides of the lifting frame 401. The rotation centers of the two sprockets 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 sprockets 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 the first avoidance grooves 405 on the inner side of the lifting frame 401. Each first avoidance groove 405 and the unlocking strip 406 are in an arc-shaped structure. The side of each unlocking strip 406 close to the first avoidance groove 405 is inclined with respect to the inner wall of the lifting frame 401.

[0021] During use, the sprocket 403 located at the top of the lifting frame 401 is driven to rotate by the double-shaft motor 402, and then the sprocket 403 located below the lifting frame 401 is driven to rotate through the chain 404, thereby driving the placing block 407 to rotate. The placing block 407 drives the cylinder block 5 to flip while being cleaned in the ultrasonic cleaning machine 1, improving the thoroughness of cleaning the cylinder block 5.

[0022] In this embodiment, the clamping mechanism 7 includes a clamping block 701, a push rod 702, a sealing cover 704 and a protrusion 705. The push rod 702 is slidably installed in the corresponding second stepped hole 410, and the clamping block 701 is fixedly installed at one end of the push rod 702 near the square slot 411. The two opposite sides of the placement block 407 are symmetrically opened and are each provided with two second avoidance grooves 409, each second avoidance groove 409 is connected to the corresponding second stepped hole 410, and the sealing cover 704 is fixedly installed at the corresponding second stepped hole 410 is in the hole opening at one end away from the square slot hole 411, and a second return spring 703 is fixedly installed on the side of the sealing cover 704 close to the second stepped hole 410, one end of the push rod 702 passes through the second return spring 703 and the outer surface of the sealing cover 704 and is fixedly installed on one side of the protrusion 705, and a groove adapted to the outer diameter of the cylinder body 5 is provided on one side of the clamping block 701, and both ends of the clamping block 701 close to the groove are provided with an inclined structure, and the push rod 702 is a shoulder column structure, and the end of the second return spring 703 away from the sealing cover 704 is against the shoulder of the push rod 702, and a guide groove 706 is provided on the side of the protrusion 705 close to the lifting frame 401.

[0023] When in use, the storage block 407 is adjusted to a horizontal state, and then the cylinder body 5 is pushed from the bottom of the clamping block 701 into the groove formed by the clamping block 701, and then the elastic force of the second return spring 703 in the clamping mechanism 7 drives the clamping block 701 to clamp and fix the outer wall of the cylinder body 5, so that it follows the storage block 407 to flip in the lifting frame 401, and an unlocking bar 406 is set. During the flipping process of the storage block 407, the protrusion 705 is pushed by the unlocking bar 406 when passing through it, and then the push rod 702 is pulled away from the storage block 407 through the protrusion 705, thereby releasing the clamping of the corresponding clamping block 701 on the cylinder body 5, so that the clamping point on the outer surface of the cylinder body 5 can be cleaned, thereby improving the thoroughness of the equipment in cleaning the outer wall of the cylinder body 5.

[0024] 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, the other end of the movable cylinder 601 is fixedly installed with a pull ring 602, the movable cylinder 601 is slidably installed in the first stepped hole 408, the surface of the movable cylinder 601 is sleeved with a first return spring 603, the two ends of the first return spring 603 are respectively against the movable cylinder 601 and the inner wall of the first stepped hole 408, the surface of the movable cylinder 601 is evenly opened with four movable holes 611, the surface of the movable cylinder 601 is fixedly installed with a plurality of blocks 604, and each movable hole 611 is slidably installed with a movable shaft 610 Each movable shaft 610 is fixedly installed with an arc block 605 on one end away from the movable cylinder 601, and an anti-slip pattern is provided on the side of the arc 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. A connecting rod 609 is rotatably installed on the other end of each movable shaft 610. A sliding groove 607 with a cross structure is provided on the side of the counterweight block 606 close to the movable hole 611. Four sliding blocks 608 are evenly slidably installed in a circle in the sliding groove 607. One side of each sliding block 608 is rotatably installed with one end of the corresponding connecting rod 609. A blocking block 612 is detachably and fixedly installed in the open mouth of the movable cylinder 601.

[0025] When in use, the auxiliary positioning mechanism 6 is not only used to position the cylinder body 5 when installing it, but also can limit the cylinder body 5 from the inside of the upper end of the cylinder body 5 when the unlocking bar 406 releases the corresponding clamping block 701 to loosen the cylinder body 5, so as to avoid the cylinder body 5 from being tilted due to insufficient stability after the clamping block 701 leaves, thereby improving the stability of the equipment cleaning process. During auxiliary limiting, when the auxiliary positioning mechanism 6 rotates to the top of the equipment, the counterweight block 606 slides downward under the action of gravity, thereby driving multiple sliders 607 to slide in the slide groove 607, and then driving the movable shaft 610 to slide outward of the movable cylinder 601 through the connecting rod 702, thereby driving the arc block 605 to press against the inner wall surface of the cylinder body 5, thereby realizing auxiliary limiting of the cylinder body 5. The first return spring 603 and the second return spring 703 are made of compression springs whose elastic force is much greater than the gravity of the cylinder body 5, thereby improving the stability of the auxiliary positioning mechanism 6 and the clamping mechanism 7 in the equipment during the clamping process; When the pulled protrusion 705 leaves the first avoidance groove 405, the corresponding clamping block 701 is reset under the action of the second reset spring 703 and drives the clamping block 701 to clamp the outer surface of the cylinder body 5. Then, when the auxiliary positioning mechanism 6 against the inner wall of the cylinder body 5 rotates across the horizontal line with the placement block 407, the counterweight block 606 slides away from the cylinder body 5, thereby driving the arc block 605 to release the limit on the inner wall of the cylinder body 5, thereby avoiding the existence of cleaning dead corners on the inner wall, thereby improving the thoroughness of the equipment in cleaning the inner wall of the cylinder body 5.

[0026] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: when in use, the lifting frame 401 is driven to rise by the hydraulic telescopic rod 3, and the storage block 407 is lifted horizontally to the top of the ultrasonic cleaning machine 1, and then the cylinder body 5 to be cleaned is placed into the square slot 411 from the bottom of the storage block 407, and the clamping blocks 701 on both sides are pushed to slide to both sides until the cylinder body 5 enters the groove opened by the clamping blocks 701, and then the push rod 702 is driven to slide toward the cylinder body 5 by the second return spring 703, so that the multiple clamping blocks 701 clamp and fix the outer surface of the cylinder body 5, and at the same time, the two ends of the cylinder body 5 are sleeved on the surfaces of the two auxiliary positioning mechanisms 6, and the cylinder body 5 is positioned by the auxiliary positioning mechanism 6, so that the center of gravity of the cylinder body 5 is near the rotation center of the storage block 407, and the lifting The stability of the equipment driving output is improved, and then the lifting frame 401 is lowered to drive the cylinder body 5 to enter the ultrasonic cleaning machine 1 for cleaning. During the cleaning process, the adjustment mechanism 4 drives the cylinder body 5 to flip over. During the flipping process, whenever one end of the cylinder body 5 rotates to the first avoidance groove 405, the two clamping blocks 701 clamped at one end of the cylinder body 5 are separated from the cylinder body 5, which is convenient for cleaning the clamping position. At this time, the counterweight block 606 in the auxiliary positioning mechanism 6 automatically slides down and drives the arc block 605 to press against the inner wall of the cylinder body 5, thereby improving the stability of the equipment cleaning process. As the auxiliary positioning mechanism 6 rotates to the bottom, the counterweight block 606 slides away from the cylinder body 5, thereby driving the arc block 605 to separate from the inner wall of the cylinder body 5, avoiding the existence of cleaning dead corners at the internal clamping position, and further improving the thoroughness of the equipment in cleaning the cylinder body 5.

[0027] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A hydraulic cylinder cleaning device, comprising an ultrasonic cleaning machine (1) and a cylinder body (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).

2. A hydraulic cylinder cleaning device according to claim 1, characterized in that: A double-shaft motor (402) is fixedly installed at the top of the lifting frame (401). Two sprockets (403) are symmetrically and rotatably installed on two opposite sides of the lifting frame (401). The rotation centers of the two sprockets (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 sprockets (403).

3. A hydraulic cylinder cleaning device according to claim 2, characterized in that: 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) near 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-shaped 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).

4. A hydraulic cylinder cleaning device according to claim 1, characterized in that: The clamping mechanism (7) includes a clamping block (701), a ejector rod (702), a sealing cover (704) and a convex block (705). The ejector rod (702) is slidably installed in the corresponding second stepped hole (410). The clamping block (701) is fixedly installed at one end of the ejector 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 ejector rod (702) passes through the second return spring (703) and the outer surface of the sealing cover (704) and is fixedly installed with one side of the convex block (705).

5. A hydraulic cylinder cleaning device according to claim 4, characterized in that: A groove matching the outer diameter of the oil cylinder body (5) is formed on one side of the clamping block (701); both ends of the clamping block (701) close to the groove are provided with inclined structures; the push rod (702) is a shoulder column structure; the end of the second return spring (703) away from the sealing cover (704) abuts against the shoulder of the push rod (702); and a guide groove (706) is formed on the side of the protrusion (705) close to the lifting frame (401).

6. A hydraulic cylinder cleaning device according to claim 1, characterized in that: The auxiliary positioning mechanism (6) comprises a movable cylinder (601), one end of the movable cylinder (601) is open and has a stepped shaft structure, the other end of the movable cylinder (601) is fixedly mounted with a pull ring (602), the movable cylinder (601) is slidably mounted in a first stepped hole (408), a first return spring (603) is sleeved on the surface of the movable cylinder (601), the two ends of the first return spring (603) respectively abut against the movable cylinder (601) and the inner wall of the first stepped hole (408), four movable holes (611) are evenly arranged on the surface of the movable cylinder (601), and a plurality of stoppers (604) are fixedly mounted on the surface of the movable cylinder (601) in a circumferential manner.

7. A hydraulic cylinder cleaning device according to claim 6, characterized in that: A movable shaft (610) is slidably mounted in each movable hole (611), and an arc block (605) is fixedly mounted on one end of each movable shaft (610) away from the movable cylinder (601). An anti-slip pattern is provided on the side of the arc block (605) away from the movable cylinder (601), and a counterweight block (606) in the form of a shoulder column structure is slidably mounted in the movable cylinder (601).

8. A hydraulic cylinder cleaning device according to claim 7, characterized in that: A connecting rod (609) is rotatably mounted on the other end of each movable shaft (610); a sliding groove (607) with a cross structure is provided on one side of the counterweight block (606) close to the movable hole (611); four sliding blocks (608) are uniformly and slidably mounted in a circular pattern in the sliding groove (607); one side of each sliding block (608) is rotatably mounted on one end of the corresponding connecting rod (609); and a blocking block (612) is detachably and fixedly mounted in the open end of the movable cylinder (601).

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