A performance testing device for hydraulic cylinders

Abstract

The present invention relates to the technical field of hydraulic cylinders, and in particular to a performance testing device for a hydraulic cylinder, comprising a housing, a micro-vibration motor, and a blow plate, etc.; the housing is provided with a switch door, the housing is provided with a partition plate, the housing is connected to a hydraulic cylinder, the hydraulic cylinder is fixedly connected to a micro-vibration motor, and the housing is fixedly connected to a blow plate. The present invention blows out air through the blow plate to raise the sand on the right side of the partition plate, simulating the environment in the desert, and vibrates the telescopic rod of the hydraulic cylinder through the micro-vibration motor to simulate the vibration of the hydraulic cylinder when pushing an object to move, thereby detecting the wear resistance of the dust ring or sealing ring of the hydraulic cylinder, and avoiding the problem of hydraulic cylinders that are easily worn out flowing into the market.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic cylinders, and in particular to performance testing equipment for hydraulic cylinders. Background Art

[0002] When carrying out construction in the desert, construction equipment such as excavators and cranes are usually used. Hydraulic cylinders are needed in construction equipment such as excavators and cranes. There will be a lot of sand flying in the desert, and when the hydraulic cylinder is used, it is usually necessary to apply lubricating oil on the telescopic rod of the hydraulic cylinder, so that the sand will adhere to the telescopic rod of the hydraulic cylinder. When the hydraulic cylinder is used to push objects to move, vibration will be generated. During the vibration, the distance between the telescopic rod and the dust ring becomes larger, causing some sand on the telescopic rod of the cylinder to more easily enter between the dust ring or the sealing ring, thereby accelerating the wear speed of the dust ring or the sealing ring on the cylinder barrel, causing the dust ring or the sealing ring on the hydraulic cylinder to become less tight. Therefore, during the production process of the hydraulic cylinder, the dust ring or the sealing ring of the hydraulic cylinder needs to be inspected to prevent easily worn hydraulic cylinders from entering the market. Summary of the invention

[0003] In order to overcome the disadvantage that some sand on the telescopic rod of the hydraulic cylinder may enter between the dust ring or the sealing ring, resulting in poor sealing performance of the dust ring or the sealing ring on the cylinder barrel, the present invention provides a performance detection device for the hydraulic cylinder.

[0004] Technical solution: A performance testing equipment for a hydraulic cylinder, comprising a shell and a micro-vibration motor; the shell is provided with a switch door and a partition plate; the shell is detachably connected to a plurality of hydraulic cylinders; a micro-vibration motor is fixedly connected to the telescopic rod of the hydraulic cylinder; it also includes a two-way push, a fixed plate, a lubrication plate, and a blowing plate; the shell is fixedly connected to a plurality of two-way pushes; the telescopic ends of all two-way pushes are fixedly connected to a fixed plate; all fixed plates are fixedly connected to a lubrication plate, and the lubrication plate is connected to an external lubricating oil conveying device; the shell is fixedly connected to a plurality of blowing plates, and the blowing plates are connected to an external air pump, and the blowing plates are provided with a plurality of nozzles, and all blowing plates are located to the right of the partition plate.

[0005] More preferably, the blowing plate further comprises a spring rod, a fixing rod and a coating film; all fixing plates are fixedly connected to a plurality of spring rods; every two adjacent spring rods in front and behind are fixedly connected to a fixing rod; every two adjacent fixing rods in left and right are fixedly connected to a coating film.

[0006] More preferably, the opposite sides of the two adjacent fixing rods on the left and right are arranged as arc-shaped surfaces that fit with the telescopic rod.

[0007] More preferably, the coating film is provided with a plurality of folds in left-right directions.

[0008] More preferably, it also includes a rope; each two adjacent fixing rods on the left and right are fixedly connected with a rope, and the rope is located on the rear side of the corresponding coating film, and the rope is fixedly connected to the coating film, and the rope is aligned with the front side of the dust ring or sealing ring of the hydraulic cylinder.

[0009] More preferably, it also includes an electric push rod, a cleaning roller and a motor; the shell is fixedly connected to a plurality of two electric push rods, and the telescopic end of the electric push rod is rotatably connected to the cleaning roller; the telescopic end of the electric push rod is fixedly connected to the motor, and the motor is fixedly connected to the cleaning roller.

[0010] More preferably, all the cleaning rollers are rotatably connected to an electric dust cover.

[0011] More preferably, it further comprises a rotating frame and a receiving film; all the fixing rods located below are rotatably connected to a rotating frame via a torsion spring; and all the rotating frames are fixedly connected to a receiving film.

[0012] More preferably, all the upper fixing plates are fixedly connected with a plurality of toggle bars.

[0013] More preferably, each two adjacent receiving films are arranged to be inclined in an inverted figure eight shape.

[0014] Compared with the prior art, the present invention has the following advantages: the present invention blows air through the air blowing plate to raise the sand on the right side of the partition plate, simulating the environment in the desert, and vibrates the telescopic rod of the hydraulic cylinder through the micro vibration motor to simulate the vibration of the hydraulic cylinder when pushing an object to move, thereby detecting the wear resistance of the dust ring or sealing ring of the hydraulic cylinder, avoiding the problem of hydraulic cylinders that are easily worn out flowing into the market;

[0015] The present invention re-applies the accumulated lubricating oil on the surface of the telescopic rod through a coating film, thereby preventing the mixture formed by the lubricating oil and sand from adhering to the dustproof ring or the sealing ring of the hydraulic oil cylinder, thereby blocking the sand on the telescopic rod, so that in the subsequent telescopic process, the sand adhering to the telescopic rod is difficult to enter between the telescopic rod and the dustproof ring or the sealing ring, thereby affecting the detection of the wear of the dustproof ring or the sealing ring of the hydraulic oil cylinder by the sand, and the performance of the dustproof ring or the sealing ring of the hydraulic oil cylinder cannot be intuitively judged;

[0016] The present invention catches the fallen mixture through the receiving film and the coating film below, thereby preventing the lubricating oil from dripping onto the fixed plate and spring rod below, causing sand to adhere to the fixed plate and spring rod, and requiring staff to clean the fixed plate and spring rod later, thereby increasing the workload of the staff. The receiving film allows the lubricating oil to flow back to the coating film below when the coating film contacts the telescopic rod, thereby avoiding the problem of reduced lubrication amount and reduced wear effect on the sealing ring or the dust ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure disclosed by the performance testing device for the hydraulic cylinder of the present invention;

[0018] Figure 2 A cross-sectional view of a housing disclosed by the performance testing device for a hydraulic cylinder of the present invention;

[0019] Figure 3 A schematic diagram of the combined structure of the housing, micro vibration motor, bidirectional push, fixing plate, lubrication plate, air blowing plate, electric push rod, cleaning roller and motor disclosed in the performance testing device for the hydraulic cylinder of the present invention;

[0020] Figure 4 It is a schematic diagram of the combined structure of the bidirectional push, fixed plate, lubricating plate, rotating frame, receiving film and shifting strip disclosed by the performance testing equipment for the hydraulic oil cylinder of the present invention;

[0021] Figure 5 The present invention is a schematic diagram of the combined structure of the two-way push, fixed plate, lubricating plate, spring rod, fixed rod, coating film, rope, rotating frame, receiving film and toggle bar disclosed in the performance testing equipment for the hydraulic cylinder.

[0022] In the figure: 1-housing, 2-micro vibration motor, 3-bidirectional push, 4-fixed plate, 5-lubricating plate, 6-blowing plate, 101-spring rod, 102-fixed rod, 103-coating film, 104-rope, 111-electric push rod, 112-cleaning roller, 113-motor, 201-rotating frame, 202-receiving film, 203-sliding bar, 1a-switch door, 1b-partition plate, 6a-nozzle. DETAILED DESCRIPTION

[0023] Although the present invention may be described with respect to a particular application or industry, those skilled in the art will recognize the broader applicability of the present invention. Those of ordinary skill in the art will recognize that terms such as above, below, upward, downward, etc. are used to describe the drawings and do not represent limitations on the scope of the present invention as defined by the appended claims. Any numerical designations such as first or second are merely exemplary and are not intended to limit the scope of the present invention in any way. Example 1

[0024] A performance testing device for a hydraulic cylinder, such as Figure 1-5As shown, it includes a housing 1 and a micro vibration motor 2; the housing 1 is provided with a switch door 1a, and the housing 1 is provided with a partition plate 1b; the housing 1 is detachably connected to four hydraulic cylinders; the telescopic rods of the second and fourth hydraulic cylinders are fixedly connected with a micro vibration motor 2 when viewed from left to right, and the telescopic rods of the hydraulic cylinders are vibrated by the micro vibration motor 2;

[0025] It also includes a two-way push 3, a fixed plate 4, a lubricating plate 5, and a blowing plate 6; the shell 1 is bolted with two two-way pushes 3; the telescopic ends of all the two-way pushes 3 are fixedly connected to a fixed plate 4; all the fixed plates 4 are fixedly connected to a lubricating plate 5, and the lubricating plate 5 is connected to an external lubricating oil delivery device; the shell 1 is fixedly connected to two blowing plates 6, and the blowing plates 6 are connected to an external air pump, and the blowing plates 6 are provided with a plurality of nozzles 6a, and all the blowing plates 6 are located on the right side of the partition plate 1b, and sand is blown up by the blowing plates 6 to simulate the environment in the desert.

[0026] The working steps of the above embodiment are: first, the staff opens the switch door 1a, and then installs the hydraulic cylinder to be tested in the housing 1, and then fixes the micro vibration motor 2 on the telescopic ends of the second and fourth hydraulic cylinders, and vibrates the telescopic ends of the hydraulic cylinders through the micro vibration motor 2 to simulate the vibration generated when the hydraulic cylinder is used to push the object to move, and then puts sand on the right side of the partition plate 1b, and then closes the switch door 1a, and controls the telescopic ends of all the hydraulic cylinders to start to repeatedly extend and retract, and then inputs air into the blowing plate 6 through the external blowing plate 6 air pump, and then the air The sand on the right side of the partition plate 1b is blown out through the nozzle 6a, so as to simulate the environment in the desert. Before the external air pump inputs air into the blowing plate 6, the two corresponding fixed plates 4 are pulled toward each other through the two-way push 3, so that the fixed plate 4 drives the lubricating plate 5 to fit with the telescopic end of the hydraulic cylinder, and then the external lubricating oil conveying equipment conveys lubricating oil into the lubricating plate 5 to apply lubricating oil to the telescopic end of the hydraulic cylinder. After the application is completed, the two-way push 3 drives the lubricating plate 5 to reset. Then, due to the adhesion of the lubricating oil, when the external air pump inputs air into the blowing plate 6, the sand in the air will adhere to it. On the telescopic rod of the hydraulic cylinder, the blowing plate 6 is simultaneously started by the micro-vibration motor 2, so that the telescopic rods of the second and fourth hydraulic cylinders from the left to the right vibrate, simulating the vibration of the hydraulic cylinder when pushing an object to move, so that there is a vibrating and non-vibrating hydraulic cylinder on the left and right of the partition plate 1b, so that the hydraulic cylinder is respectively in a normal telescopic state, a telescopic state when pushing an object to move, a normal telescopic state in a windy and sandy scene, and a telescopic state when pushing an object to move in a windy and sandy scene, so as to simulate four usage environments of the hydraulic cylinder and provide hydraulic cylinder detection data comparison The property is conducive to the subsequent judgment of the environment in which the sealing ring or dust ring of the hydraulic cylinder is most worn. Subsequently, after the telescopic end of the hydraulic cylinder is repeatedly extended and retracted for a period of time, the staff of the blowing plate 6 opens the switch door 1a, disassembles all the hydraulic cylinders, and disassembles the hydraulic cylinders, takes out the internal dust rings or sealing rings, and then measures the dust rings or sealing rings to obtain the degree of wear of each dust ring or sealing ring, and records them, and then installs a new hydraulic cylinder in the housing 1, and conducts multiple tests to increase the credibility of the test results, thereby detecting the wear resistance of the dust rings or sealing rings of the hydraulic cylinders. Example 2

[0027] On the basis of Example 1, Figure 3-5As shown, it also includes a spring rod 101, a fixed rod 102 and a coating film 103; all the fixed plates 4 are fixedly connected to four spring rods 101; every two adjacent spring rods 101 in the front and back are fixedly connected to the fixed rod 102; every two adjacent fixed rods 102 in the left and right are fixedly connected to the coating film 103, and the accumulated mixture of lubricating oil and sand is re-coated on the telescopic rod through the coating film 103.

[0028] The opposite sides of the two adjacent fixing rods 102 are configured as arc-shaped surfaces that fit with the telescopic rod.

[0029] The coating film 103 is provided with a plurality of folds in the left and right directions, so that when the coating film 103 wraps the telescopic rod, the mixture of lubricating oil and sand will be stored in the folds in the left and right directions, avoiding all the lubricating oil and sand from overflowing when the coating film 103 is in contact with the telescopic rod, and then being blocked by the coating film 103 from falling as the telescopic rod is extended and retracted.

[0030] It also includes a rope 104; every two adjacent fixed rods 102 on the left and right are commonly fixedly connected with the rope 104, and the rope 104 is located on the rear side of the corresponding coating film 103, and the rope 104 is fixedly connected to the coating film 103, and the rope 104 is aligned with the front side of the dust ring or sealing ring of the hydraulic cylinder, and the mixture of lubricating oil and sand accumulated on the dust ring or sealing ring of the hydraulic cylinder is scraped off through the rope 104.

[0031] It also includes an electric push rod 111, a cleaning roller 112 and a motor 113; the shell 1 is fixedly connected to a plurality of two electric push rods 111, and the telescopic end of the electric push rod 111 is rotatably connected to the cleaning roller 112; the telescopic end of the electric push rod 111 is fixedly connected to the motor 113, and the motor 113 is fixedly connected to the cleaning roller 112, and the coating film 103 is cleaned by the cleaning roller 112.

[0032] All the cleaning rollers 112 are rotatably connected to an electric dust cover, which prevents the cleaning rollers 112 from being adhered to sand.

[0033] The working steps of the above embodiment are as follows: when the hydraulic cylinder contracts, the mixture of lubricating oil and sand on the telescopic rod will be blocked outside the dust ring or sealing ring of the hydraulic cylinder and accumulate; when the hydraulic cylinder extends, the accumulated mixture of lubricating oil and sand cannot be evenly distributed on the telescopic rod again, and usually adheres to the dust ring or sealing ring of the hydraulic cylinder in a clumping shape, thereby blocking the sand on the telescopic rod. During the subsequent extension and retraction process of the telescopic end of the hydraulic cylinder, the sand adhered to the telescopic rod is difficult to enter between the telescopic rod and the dust ring or sealing ring, thereby affecting the detection of the wear of the dust ring or sealing ring of the hydraulic cylinder by the sand, and the performance of the dust ring or sealing ring of the hydraulic cylinder cannot be intuitively judged. During the extension of the telescopic rod of the cylinder, the two corresponding fixed plates 4 and all the parts connected thereto are pulled toward each other through the bidirectional push 3, and the fixed plate 4 drives the two ropes 104 and the two coating films 103 to move toward each other. During the movement of the two ropes 104 toward each other, since the ropes 104 are aligned with the front sides of the dust rings or sealing rings, the movement of the ropes 104 toward each other will scrape off the mixture of lubricating oil and sand adhering to the outside of the dust rings or sealing rings, and then the mixture will be covered by the coating films 103, and the mixture will adhere to the coating films 103 and be located on the opposite sides of the two adjacent coating films 103. When the ropes 104 and the coating films 103 contact the telescopic rod of the hydraulic cylinder, the telescopic rod will contact the ropes 104. The rope 104 and the smear film 103 are squeezed and deformed, and the rope 104 and the smear film 103 are fitted with the telescopic rod. At the same time, the arc portion on the fixed plate 4 that fits with the telescopic rod of the hydraulic cylinder restricts the rope 104 and the smear film 103 to ensure that the rope 104 and the smear film 103 are fitted with the telescopic rod. Due to the bending deformation of the rope 104 and the smear film 103, the distance between the two ends of the rope 104 and the smear film 103 becomes smaller, thereby pulling the two adjacent fixed rods 102 on the left and right to move toward each other, and the spring rod 101 is stretched. When the fixed rod 102 contacts the telescopic rod, the rope 104 and the smear film 103 can no longer move, and the two-way push 3 stops pulling. The length of 103 is half of the circumference of the telescopic rod, so at this time the two adjacent coating films 103 cooperate with the fixed rod 102 to completely wrap part of the telescopic rod, and because the mixture is located on the opposite sides of the two adjacent coating films 103, during the extension of the telescopic rod, the mixture can be re-evenly applied to the surface of the telescopic rod to prevent the mixture formed by the lubricating oil and sand from adhering to the dust ring or sealing ring of the hydraulic cylinder, thereby blocking the sand on the telescopic rod. In the subsequent extension and retraction process, the sand adhered to the telescopic rod is difficult to enter between the telescopic rod and the dust ring or sealing ring, affecting the detection of the wear of the dust ring or sealing ring of the hydraulic cylinder by the sand, and the performance of the dust ring or sealing ring of the hydraulic cylinder cannot be intuitively judged.

[0034] It should be noted that if the accumulated mixture of lubricating oil and sand is not re-applied on the telescopic rod but new lubricating oil is applied, the loss of lubricating oil will be greatly increased, and the amount of accumulated mixture of lubricating oil and sand will also be greatly increased, and the lubricating oil cannot be fully used, resulting in a waste of lubricating oil. Therefore, by re-applying the accumulated lubricating oil on the telescopic rod, the lubricating oil can be fully used and the accumulation of the mixture of lubricating oil and sand can be avoided.

[0035] After the hydraulic cylinder inspection is completed, the two-way push 3 drives the fixed plate 4 and all the parts connected to it to reset, and then the staff removes the hydraulic cylinder. At this time, the electric push rod 111 pushes the cleaning roller 112 and the motor 113 to move backward. Since the cleaning roller 112 corresponds to the initial position of the coating film 103, when the cleaning roller 112 passes through the coating film 103, the motor 113 drives the cleaning roller 112 to rotate, so that the cleaning roller 112 is used to clean the lubricating oil and sand on the coating film 103 to prevent the lubricating oil and sand from solidifying on the coating film 103 and affecting the subsequent use of the coating film 103. Example 3

[0036] On the basis of Example 2, Figure 4-5 As shown, it also includes a rotating frame 201 and a receiving film 202; all the fixing rods 102 located below are rotatably connected to a rotating frame 201 through a torsion spring; and all the rotating frames 201 are fixedly connected to a receiving film 202.

[0037] All the fixed plates 4 located at the top are fixedly connected with four toggle bars 203 , and the toggle bars 203 are provided with a plurality of protrusions, and the rotating frame 201 is rotated by toggle bars 203 .

[0038] Each of the two adjacent receiving films 202 is arranged to be inclined in an inverted figure eight shape, so that the lubricating oil on the receiving film 202 can flow downward to the coating film 103 below.

[0039] The working steps of the above embodiment are: during the process of the two coating films 103 moving toward each other, the middle parts of the two coating films 103 will first fit with the upper and lower ends of the telescopic rod of the hydraulic cylinder, and then the left and right sides of the two coating films 103 will gradually fit with the remaining positions of the telescopic rod. When the middle part of the coating film 103 fits with the upper and lower ends of the telescopic rod, part of the lubricating oil on the telescopic rod will be squeezed by the coating film 103 and flow to the left and right directions. The amount of lubricating oil on the left and right parts of the telescopic rod increases, resulting in part of the lubricating oil overflowing and falling downward when the coating film 103 is completely fitted with the telescopic rod. The lubricating oil that overflows and falls downward may pollute the spring rod 101 and other parts on the lower fixed plate 4, that is, the sand in the lubricating oil will adhere to the spring rod 101, so that the staff will need to clean the spring rod 101 later to prevent the lubricating oil from wrapping the sand and solidifying there. The spring rod 101 increases the workload of the staff and reduces the amount of lubrication on the telescopic rod. The less lubricating oil there is, the more difficult it is for sand to adhere to the telescopic rod, which affects the detection of sand on the wear of the dust ring or sealing ring of the hydraulic cylinder. Therefore, when the coating films 103 move toward each other, the two-way push 3 first pulls the upper coating film 103 downward. When the upper coating film 103 contacts the telescopic rod, the coating film 103 below does not move upward. The lubricating oil overflowing downward from the telescopic rod will contact the receiving film 202 and the coating film 103 below. The receiving film 202 blocks the lubricating oil falling downward to prevent the lubricating oil from dripping onto the fixing plate 4 and the spring rod 101 below, causing sand to adhere to the spring rod 101, requiring the staff to clean the spring rod 101 later, increasing the workload of the staff.After the upper coating film 103 moves downward for a distance, the lower coating film 103 is pulled upward by the bidirectional push 3. During the upward movement of the lower coating film 103, the lower fixed plate 4 drives the rotating frame 201 and the receiving film 202 to move upward. During the upward movement of the rotating frame 201, when the rotating frame 201 passes through the toggle bar 203, the toggle bar 203 squeezes the rotating frame 201, causing the rotating frame 201 to rotate. Subsequently, when passing through the groove part of the toggle bar 203, the torsion spring connected to the rotating frame 201 and the fixed rod 102 drives the rotating frame 201 to reset. Subsequently, when passing through the raised part of the toggle bar 203 again, the rotating frame 201 is reset again. The rotating frame 201 is squeezed and rotated, and so on, so that the rotating frame 201 rotates repeatedly, causing the receiving film 202 to shake, and then the mixture falling on the receiving film 202 will be collected downward to the coating film 103 below, and then when the coating film 103 below contacts the telescopic rod, the lubricating oil in the middle of the coating film 103 below will be squeezed by the telescopic rod to flow to the left or right to the receiving film 202. Since the receiving film 202 is located on the left and right sides of the coating film 103 below, the subsequent lubricating oil will flow from the receiving film 202 to the coating film 103 below, thereby avoiding the problem of reduced lubrication quantity, resulting in reduced wear effect on the sealing ring or dust ring. ;

[0040] The above embodiments are provided for persons familiar with the art to implement or use the present invention. Personnel familiar with the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A performance testing device for a hydraulic cylinder, comprising a housing (1) and a micro vibration motor (2); the housing (1) is provided with a switch door (1a), and the housing (1) is provided with a partition plate (1b); the housing (1) is detachably connected to a plurality of hydraulic cylinders; a micro vibration motor (2) is fixedly connected to a telescopic rod of the hydraulic cylinder; wherein: It also comprises a bidirectional pusher (3), a fixed plate (4), a lubricating plate (5), and an air blowing plate (6); the housing (1) is fixedly connected to a plurality of bidirectional pushers (3); the telescopic ends of all bidirectional pushers (3) are fixedly connected to a fixed plate (4); all fixed plates (4) are fixedly connected to a lubricating plate (5), and the lubricating plate (5) is connected to an external lubricating oil conveying device; the housing (1) is fixedly connected to a plurality of air blowing plates (6), and the air blowing plates (6) are connected to an external air pump, and the air blowing plates (6) are provided with a plurality of nozzles (6a), and all the air blowing plates (6) are located to the right of the partition plate (1b); sand is placed on the right side of the partition plate (1b).

2. A performance testing device for a hydraulic cylinder according to claim 1, characterized in that: It also includes a spring rod (101), a fixing rod (102) and a coating film (103); all the fixing plates (4) are fixedly connected to a plurality of spring rods (101); every two front-to-back adjacent spring rods (101) are fixedly connected to a fixing rod (102); every two left-to-right adjacent fixing rods (102) are fixedly connected to a coating film (103).

3. A performance testing device for a hydraulic cylinder according to claim 2, characterized in that: The opposite sides of the two adjacent fixing rods (102) are arranged as arc-shaped surfaces that fit the telescopic rod.

4. A performance testing device for a hydraulic cylinder according to claim 2, characterized in that: The coating film (103) is provided with a plurality of folds in the left-right direction.

5. A performance testing device for a hydraulic cylinder according to any one of claims 2 to 4, characterized in that: It also includes a rope (104); each of the two adjacent fixing rods (102) on the left and right are fixedly connected with the rope (104), and the rope (104) is located at the rear side of the corresponding coating film (103), and the rope (104) is fixedly connected to the coating film (103), and the rope (104) is aligned with the front side of the dust ring or the sealing ring of the hydraulic cylinder.

6. A performance testing device for a hydraulic cylinder according to claim 5, characterized in that: It also comprises an electric push rod (111), a cleaning roller (112) and a motor (113); the housing (1) is fixedly connected to a plurality of two electric push rods (111), and the telescopic ends of the electric push rods (111) are rotatably connected to the cleaning roller (112); the telescopic ends of the electric push rods (111) are fixedly connected to the motor (113), and the motor (113) is fixedly connected to the cleaning roller (112).

7. A performance testing device for a hydraulic cylinder according to claim 6, characterized in that: All the cleaning rollers (112) are rotatably connected to an electric dust cover.

8. A performance testing device for a hydraulic cylinder according to claim 6, characterized in that: It also includes a rotating frame (201) and a receiving film (202); all the fixed rods (102) located below are rotatably connected to a rotating frame (201) via a torsion spring; and all the rotating frames (201) are fixedly connected to a receiving film (202).

9. A performance testing device for a hydraulic cylinder according to claim 8, characterized in that: All the fixed plates (4) located at the top are fixedly connected to a plurality of toggle bars (203).

10. A performance testing device for a hydraulic cylinder according to claim 9, characterized in that: Each of the two adjacent receiving films (202) is arranged to be inclined in an inverted figure eight shape.

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