Oil cylinder testing device

Abstract

The invention relates to the technical field of oil cylinder pressure testing, and discloses an oil cylinder testing device, which comprises a frame body and at least one testing system, and is characterized in that the frame body is provided with at least one testing inclined surface; the testing system comprises a first positioning assembly, a second positioning assembly and a counterweight assembly, the first positioning assembly is slidably arranged on the testing inclined plane and is used for being hinged to the jacking end of the oil cylinder, and the second positioning assembly is slidably arranged on the testing table in the direction close to the testing inclined plane in a driving mode; the second positioning assembly is used for being hinged to the fixed end of the oil cylinder, and the counterweight assembly is connected with the first positioning assembly, so that the first positioning assembly has the trend of moving downwards, and the problem that the oil cylinder test does not conform to the actual working condition of a product is solved.

Description

Technical Field

[0001] This invention relates to the field of hydraulic cylinder pressure testing technology, and more specifically to a hydraulic cylinder testing device. Background Technology

[0002] In related technologies, multistage cylinders (hereinafter referred to as multistage cylinders) are increasingly widely used in industrial fields, and the variety of types is also increasing. The quality of multistage cylinders leaving the factory must undergo thorough inspection. The inspection mainly focuses on the sealing performance of the connections between cylinder barrels, as well as strength and pressure resistance testing. Currently, the pressure resistance performance of multistage cylinders is tested using a horizontal cylinder assembly machine. This equipment mainly consists of a cylinder barrel fixing fixture, a horizontal feed cylinder, and a hydraulic system. The specific workflow is roughly as follows: ① Fixing the multistage cylinder; ② The multistage cylinder extends to its full oil supply position; ③ The horizontal cylinder tightens; ④ The multistage cylinder retracts to its original position after oil discharge. Multistage cylinders are mostly used in lifting operations, and a horizontal layout testing system does not conform to the actual working conditions of the products. Summary of the Invention

[0003] In view of this, the present invention provides a hydraulic cylinder testing device to solve the problem that hydraulic cylinder testing does not conform to the actual working conditions of the product.

[0004] On the one hand, this application provides a hydraulic cylinder testing device, including a frame and at least one testing system, the specific scheme of which is as follows.

[0005] The frame is provided with at least one test ramp; the test system includes a first positioning component, a second positioning component, and a counterweight component. The first positioning component is slidably disposed on the test ramp and is hinged to the lifting end of the hydraulic cylinder. The second positioning component is driven to slide on the test platform in a direction close to the test ramp and is hinged to the fixed end of the hydraulic cylinder. The counterweight component is connected to the first positioning component so that the first positioning component has a downward movement tendency.

[0006] In an optional implementation, the test system further includes a drive component, the drive end of which is connected to the second positioning component.

[0007] In an optional implementation, the first positioning component includes: A positioning plate is provided with a first connecting part, which is used to hinge with the lifting end of the oil cylinder. A first track is provided on the test inclined surface, and the positioning plate is slidably connected to the first track.

[0008] In an optional embodiment, the testing system further includes an auxiliary support component for sliding contact with the test bench. The auxiliary support component has a telescopic end for supporting the fixed end of the hydraulic cylinder, and the telescopic end is spaced apart from the second positioning component.

[0009] In an optional embodiment, a test platform is further included, on which a base plate is disposed, and a second track is disposed on the base plate, wherein the second positioning component and the auxiliary support component are both slidably connected to the second track.

[0010] In an optional embodiment, the second positioning component includes a first trolley, which is provided with a second connecting part and a telescopic mounting seat. The second connecting part is used to be hinged to the fixed end of the hydraulic cylinder. The first trolley is slidably connected to the second track, and the telescopic mounting seat is used to support the hydraulic cylinder.

[0011] In an optional embodiment, the auxiliary support assembly includes a second trolley with a telescopic component having a telescopic end, and the second trolley is slidably connected to the second track.

[0012] In an optional embodiment, the testing system further includes a pulley system mounted on the frame, the counterweight assembly being connected to one end of a rope in the pulley system, and the other end of the rope being connected to the first positioning assembly.

[0013] In one alternative embodiment, the counterweight assembly includes a bracket and a plurality of counterweight blocks, at least some of which are optionally mounted on the bracket; and / or, the counterweight assembly is disposed inside the frame.

[0014] In one alternative implementation, there are two testing systems arranged symmetrically; and / or, a ladder is provided on the frame.

[0015] Beneficial effects: This invention provides a hydraulic cylinder testing device, which uses a test ramp set on a frame, a first positioning component slidably set on the test ramp, and a second positioning component driven to slide on the test platform to change the tilt angle of the hydraulic cylinder, thereby simulating the tilt angle of the hydraulic cylinder under actual working conditions. Then, combined with a hydraulic system and a counterweight component, the performance of the hydraulic cylinder can be tested, thus enabling the hydraulic cylinder to be tested under conditions that conform to actual working conditions. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this application, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is an axonometric view of a hydraulic cylinder testing device according to an embodiment of this application; Figure 2 This is a front view of a hydraulic cylinder testing device according to an embodiment of this application; Figure 3 This is a schematic diagram illustrating the interaction between the first positioning component and the hydraulic cylinder in a hydraulic cylinder testing device according to an embodiment of this application. Figure 4 This is a schematic diagram showing the cooperation between the second positioning component and surrounding parts in a hydraulic cylinder testing device according to an embodiment of this application; Figure 5 This is a schematic diagram showing the cooperation between the auxiliary support component and the surrounding parts in a hydraulic cylinder testing device according to an embodiment of this application.

[0018] Explanation of reference numerals in the attached figures: 1. Frame; 2. First positioning component; 3. Second positioning component; 4. Counterweight component; 5. Drive component; 6. Auxiliary support component; 7. Pulley block; 8. Test bench; 9. Hydraulic cylinder; 11. Test slope; 111. First track; 12. Ladder; 21. Positioning plate; 211. First connecting part; 31. First traveling carriage; 311. Second connecting part; 312. Telescopic mounting base; 61. Telescopic end; 62. Second traveling crane; 621. Telescopic component; 81. Substrate; 811. Second track. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] It should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. The terms "parallel," "perpendicular," and "equal" include the described situation and situations similar to the described situation, the range of which is within an acceptable deviation range, wherein the acceptable deviation range is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, where an acceptable deviation range for approximate parallelism can be, for example, within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, where an acceptable deviation range for approximate perpendicularity can also be, for example, within 5°. "Equal" includes absolute equality and approximate equality, where an acceptable deviation range for approximate equality can be, for example, a difference between the two equal items being less than or equal to 5% of either one. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] In related technologies, multistage cylinders (hereinafter referred to as multistage cylinders) are increasingly widely used in industrial fields, and the variety of types is also increasing. The quality of multistage cylinders leaving the factory must undergo thorough inspection. The inspection mainly focuses on the sealing performance of the connections between cylinder barrels, as well as strength and pressure resistance testing. Currently, the pressure resistance performance of multistage cylinders is tested using a horizontal cylinder assembly machine. This equipment mainly consists of a cylinder barrel fixing fixture, a horizontal feed cylinder, and a hydraulic system. The specific workflow is roughly as follows: ① Fixing the multistage cylinder; ② The multistage cylinder extends to its full oil supply position; ③ The horizontal cylinder tightens; ④ The multistage cylinder retracts to its original position after oil discharge. Multistage cylinders are mostly used in lifting operations, and a horizontal layout testing system does not conform to the actual working conditions of the products.

[0022] Therefore, the present invention provides a hydraulic cylinder testing device to solve the problem that hydraulic cylinder testing does not conform to the actual working conditions of the product.

[0023] The following is combined with Figures 1 to 5 This describes an embodiment of the present application.

[0024] According to embodiments of this application, in one aspect, a hydraulic cylinder testing device is provided, such as... Figure 1 and Figure 2 As shown, it includes a frame 1 and at least one test system.

[0025] like Figure 1 As shown, the frame 1 is a metal frame, which can be made of multiple metal tubes or angle irons welded together. The frame 1 is provided with at least one test slope 11. Specifically, the angle between the test slope 11 and the height direction of the frame 1 is 20°~50°, which can be any one value or any range between any two values ​​of 20°, 25°, 30°, 35°, 40°, 45° and 50°.

[0026] like Figure 1 As shown, one or more testing systems can be set up, and each testing system corresponds to a testing ramp 11. The testing system includes a first positioning component 2, a second positioning component 3, and a counterweight component 4. The first positioning component 2 is slidably set on the testing ramp 11. The first positioning component 2 is used to be hinged to the lifting end of the hydraulic cylinder 9 through a rotating shaft or other components. The second positioning component 3 is used to drive and slide on the testing platform 8 in a direction close to the testing ramp 11. The second positioning component 3 is used to be hinged to the fixed end of the hydraulic cylinder 9 through a rotating shaft or other components. The counterweight component 4 is connected to the first positioning component 2 so that the first positioning component 2 has a downward movement tendency.

[0027] It should be noted that the "driving sliding" in the above "the second positioning component 3 is used to drive and slide on the test platform 8 in the direction close to the test slope 11" means that the second positioning component 3 is slidably connected to the test platform 8 and is driven to move by other driving components, or the second positioning component 3 is driven to move by itself, such as the second positioning component 3 being equipped with a stepper motor, etc.

[0028] like Figure 1 As shown, in specific use, the fixed end (cylinder barrel) of the hydraulic cylinder 9 is hinged to the second positioning component 3, the lifting end (cylinder rod) of the hydraulic cylinder 9 is hinged to the first positioning component 2, and the hydraulic cylinder 9 is connected to the hydraulic system.

[0029] like Figure 1 As shown, the second positioning component 3 moves toward the test slope 11 under the action of external drive or self-drive. Since the hydraulic cylinder 9 is in a retracted state, when the hydraulic cylinder 9 moves toward the test slope 11, it will drive the lifting end of the hydraulic cylinder 9 to move upward along the test slope 11. Thus, under the pushing force of the lifting end of the hydraulic cylinder 9, the first positioning component 2 moves upward synchronously along the test slope 11. The first positioning component 2 drives the counterweight component 4 to rise. When the tilting posture of the hydraulic cylinder 9 matches the tilting angle of the actual working condition, the second positioning component 3 stops moving and locks its position.

[0030] like Figure 1 As shown, the hydraulic system injects hydraulic oil into the cylinder 9, and the cylinder 9 extends multiple cylinder rods to lift upward. During the lifting process, the first positioning component 2 will move upward along the test slope 11. At the same time, the first positioning component 2 will drive the counterweight component 4 to rise. At this time, the weight of the counterweight component 4 will be applied to the lifting end of the cylinder 9 to simulate the working condition of the cylinder 9 under load, thereby achieving the purpose of testing the cylinder 9.

[0031] like Figure 1 As shown, when the cylinder 9 reaches its maximum stroke, the performance of the cylinder 9 can be tested by the detection device to see if it meets the requirements. After the test is completed, the hydraulic system is controlled to release the hydraulic oil in the cylinder 9, and the cylinder 9 gradually retracts to its original position, and the test ends.

[0032] In this embodiment, such as Figure 1 As shown, a test ramp 11 is set on the frame 1, and a first positioning component 2 is slidably set on the test ramp 11. A second positioning component 3 is driven to slide on the test platform 8 to change the tilt angle of the hydraulic cylinder 9, thereby simulating the tilt angle of the hydraulic cylinder 9 under actual working conditions. Then, combined with the hydraulic system and the counterweight component 4, the performance of the hydraulic cylinder 9 can be tested, so that the hydraulic cylinder 9 can be tested under conditions that conform to actual working conditions.

[0033] In one embodiment, such as Figure 1 and Figure 2 As shown, the test system also includes a drive component 5. Specifically, the drive component 5 can be a telescopic cylinder or a winch driven by an electric motor. The drive end of the drive component 5 is connected to the second positioning component 3 to drive the second positioning component 3 to reciprocate.

[0034] Specifically, the second positioning component 3 is driven by the drive component 5, which is located below the frame 1. The drive component 5 includes a winch and a wire rope. By retracting the wire rope, the winch can pull the second positioning component 3 toward the test slope 11, so that the cylinder of the hydraulic cylinder 9 on the second positioning component 3 moves closer to the test slope 11. During the movement, the end of the cylinder rod of the hydraulic cylinder 9 can be lifted and moved upward along the test slope 11. After the winch releases the wire rope, the second positioning component 3 can be reset by external force (such as the gravity of the counterweight component 4 or other external forces).

[0035] In this embodiment, such as Figure 1 As shown, the driving end of the driving component 5 is used to drive the second positioning component 3, which has a simple structure and is easy to implement.

[0036] In one embodiment, such as Figure 1 and Figure 3As shown, the first positioning component 2 includes a positioning tray 21, and a first connecting portion 211 is provided on the positioning tray 21, such as... Figure 3 As shown, specifically, the first connecting part 211 can be a connecting ear that is spaced apart; the first connecting part 211 is used to be hinged to the lifting end of the oil cylinder 9 through a rotating shaft, and a first track 111 is provided on the test inclined surface 11, and the positioning plate 21 is slidably connected to the first track 111.

[0037] Specifically, such as Figure 1 As shown, the first track 111 includes two spaced-apart first slide rails. The positioning plate 21 is formed by welding or screwing together multiple metal plates. The two opposite ends of the positioning plate 21 are provided with first slide grooves. Rollers are provided on the surfaces of the first slide grooves that mate with the first slide rails and slide in sliding contact with the first slide grooves. Preferably, the first slide grooves are U-shaped, and rollers are provided on the three inner wall surfaces to roll in contact with the first slide rails.

[0038] In this embodiment, such as Figure 1 and Figure 3 As shown, the first positioning component 2 is used as the positioning support plate 21 to slide and connect with the first track 111 on the test slope 11. The solution is simple and has low resistance, which can improve the accuracy of the test results of the hydraulic cylinder 9.

[0039] In one embodiment, such as Figure 1 , Figure 2 and Figure 4 As shown, the testing system also includes an auxiliary support component 6, which is used to slide in contact with the test bench 8. The auxiliary support component 6 has a telescopic end 61. Specifically, the telescopic end 61 is a telescopic cylinder or a telescopic hydraulic cylinder 9, etc. The telescopic end 61 is used to support the fixed end (cylinder barrel) of the hydraulic cylinder 9. The telescopic end 61 is spaced apart from the second positioning component 3, that is, the contact part between the telescopic end 61 and the cylinder barrel is spaced apart from the hinge part between the second positioning component 3 and the cylinder barrel.

[0040] In specific usage, such as Figure 2 As shown, at the beginning stage of the second positioning component 3 driving the cylinder 9 to adjust the angle, since the cylinder 9 is in a horizontal state during installation, the angle between the cylinder 9 and the test slope 11 is large. Therefore, when the second positioning component 3 drives the cylinder 9 to adjust, the resistance is large. The auxiliary support component 6 can support and lift the cylinder 9 to reduce the resistance of the test slope 11 to adjust the cylinder 9.

[0041] In this embodiment, such as Figure 1 , Figure 2 and Figure 4As shown, the auxiliary support component 6 slides in contact with the test platform 8 and supports the hydraulic cylinder 9. This reduces the resistance of the hydraulic cylinder 9 during angle adjustment and provides support during the installation of the hydraulic cylinder 9, making installation easier.

[0042] In one embodiment, such as Figure 1 As shown, the hydraulic cylinder testing device also includes a test platform 8. Specifically, the test platform 8 can be the ground or a workbench, etc. A base plate 81 is provided on the test platform 8. The base plate 81 can be a base surface made of cement concrete or a plate made of metal plate. A second track 811 is provided on the base plate 81. The second positioning component 3 and the auxiliary support component 6 are slidably connected to the second track 811.

[0043] Specifically, such as Figure 1 As shown, the second track 811 includes two spaced-apart second slide rails that extend in a direction close to the test slope 11.

[0044] In this embodiment, such as Figure 1 As shown, by setting a substrate 81 on the test bench 8, the movement stability of the second positioning component 3 and the auxiliary support component 6 during the test can be improved, thereby improving the accuracy of the test data.

[0045] In one embodiment, such as Figure 1 , Figure 2 and Figure 4 As shown, the second positioning component 3 includes a first carriage 31, such as... Figure 4 As shown, the first traveling trolley 31 is provided with a second connecting part 311 and a telescopic mounting seat 312. The second connecting part 311 is used to hinge with the fixed end of the hydraulic cylinder 9. Specifically, as shown... Figure 4 As shown, the second connecting part 311 consists of two connecting ears spaced apart, which are hinged to the cylinder of the hydraulic cylinder 9 via a rotating shaft; the first trolley 31 is slidably connected to the second track 811, and the telescopic mounting seat 312 is used to support the hydraulic cylinder 9.

[0046] Specifically, such as Figure 4 As shown, the telescopic mounting base 312 includes an automatic telescopic component and a mating seat. The mating seat is connected to the telescopic part of the automatic telescopic component. The mating seat is provided with two spaced rollers for contacting the cylinder surface of the hydraulic cylinder 9.

[0047] like Figure 1 As shown, the bottom of the first carriage 31 is provided with multiple pulleys, which are slidably connected to the second slide rail.

[0048] In this embodiment, the second positioning component 3 includes a first trolley 31, on which a telescopic mounting seat 312 is provided. This can work in conjunction with the auxiliary support component 6 to horizontally install the hydraulic cylinder 9. Furthermore, by adjusting the height, it can accommodate the installation of hydraulic cylinders 9 of different sizes.

[0049] In one embodiment, such as Figure 1 and Figure 5 As shown, the auxiliary support assembly 6 includes a second carriage 62, on which a telescopic component 621 is provided. The telescopic component 621 has a telescopic end 61. The second carriage 62 is slidably connected to the second track 811. Specifically, the bottom of the second carriage 62 is provided with multiple pulleys that make sliding contact with the second track 811.

[0050] Specifically, such as Figure 5 As shown, the telescopic end 61 is provided with two spaced-apart support wheels to contact the surface of the cylinder barrel of the hydraulic cylinder 9.

[0051] In this embodiment, the auxiliary support component 6 includes a second trolley 62, which has a simple structure and requires less driving force.

[0052] In one embodiment, such as Figure 1 As shown, the test system also includes a pulley block 7, which is mounted on the frame 1. The counterweight component 4 is connected to one end of the rope in the pulley block 7, and the other end of the rope is connected to the first positioning component 2.

[0053] Specifically, the pulley block 7 includes at least one fixed pulley, and may also include a movable pulley, with the fixed pulley connected to the frame 1.

[0054] In this embodiment, the counterweight component 4 and the first positioning component 2 are connected by a pulley block 7, which is simple in structure and easy to manufacture.

[0055] In one embodiment, such as Figure 1 As shown, the counterweight assembly 4 includes a bracket and multiple counterweight blocks, with at least some of the counterweight blocks optionally mounted on the bracket, enabling performance testing of different models of hydraulic cylinders 9. The counterweight assembly 4 is located inside the frame 1, which reduces the area it occupies.

[0056] In one embodiment, such as Figure 1 and Figure 2 As shown, there are two test systems, which are symmetrically arranged; they can form a balanced force and improve the deformation resistance of the frame 1 by conducting tests on two sets of hydraulic cylinders 9; a ladder 12 is provided on the frame 1, and the ladder 12 is a metal ladder 12.

[0057] In one embodiment, a hydraulic cylinder testing device is provided, such as Figure 1 and Figure 2As shown, it includes a frame 1 and at least one test system.

[0058] like Figure 1 As shown, the frame 1 is a metal frame, which can be made of multiple metal tubes or angle irons welded together. The frame 1 is provided with at least one test ramp 11. Specifically, the angle between the test ramp 11 and the height direction of the frame 1 is 20°~50°, which can be any one value or a range between any two values ​​of 20°, 25°, 30°, 35°, 40°, 45° and 50°. A ladder 12 is provided on the frame 1, and the ladder 12 is a metal ladder.

[0059] like Figure 1 As shown, one or more testing systems can be set up, and each testing system corresponds to a testing ramp 11. The testing system includes a first positioning component 2, a second positioning component 3, and a counterweight component 4. The first positioning component 2 is slidably set on the testing ramp 11. The first positioning component 2 is used to be hinged to the lifting end of the hydraulic cylinder 9 through a rotating shaft or other components. The second positioning component 3 is used to drive and slide on the testing platform 8 in a direction close to the testing ramp 11. The second positioning component 3 is used to be hinged to the fixed end of the hydraulic cylinder 9 through a rotating shaft or other components. The counterweight component 4 is connected to the first positioning component 2 so that the first positioning component 2 has a downward movement tendency.

[0060] Specifically, there are two test systems, which are set up symmetrically.

[0061] It should be noted that the "driving sliding" in the above "the second positioning component 3 is used to drive and slide on the test platform 8 in the direction close to the test slope 11" means that the second positioning component 3 is slidably connected to the test platform 8 and is driven to move by other driving components, or the second positioning component 3 is driven to move by itself, such as the second positioning component 3 being equipped with a stepper motor, etc.

[0062] More specifically, such as Figure 1 and Figure 2 As shown, the test system also includes a drive component 5. Specifically, the drive component 5 can be a telescopic cylinder or a winch driven by an electric motor. The drive end of the drive component 5 is connected to the second positioning component 3 to drive the second positioning component 3 to reciprocate.

[0063] Specifically, the second positioning component 3 is driven by the drive component 5, which is located below the frame 1. The drive component 5 includes a winch and a wire rope. By retracting the wire rope, the winch can pull the second positioning component 3 toward the test slope 11, so that the cylinder of the hydraulic cylinder 9 on the second positioning component 3 moves closer to the test slope 11. During the movement, the end of the cylinder rod of the hydraulic cylinder 9 can be lifted and moved upward along the test slope 11. After the winch releases the wire rope, the second positioning component 3 can be reset by external force (such as the gravity of the counterweight component 4 or other external forces).

[0064] More specifically, such as Figure 1 and Figure 3 As shown, the first positioning component 2 includes a positioning tray 21, and a first connecting portion 211 is provided on the positioning tray 21, such as... Figure 3 As shown, specifically, the first connecting part 211 can be a connecting ear that is spaced apart; the first connecting part 211 is used to be hinged to the lifting end of the oil cylinder 9 through a rotating shaft, and a first track 111 is provided on the test inclined surface 11, and the positioning plate 21 is slidably connected to the first track 111.

[0065] Specifically, such as Figure 1 As shown, the first track 111 includes two spaced-apart first slide rails. The positioning plate 21 is formed by welding or screwing together multiple metal plates. The two opposite ends of the positioning plate 21 are provided with first slide grooves. Rollers are provided on the surfaces of the first slide grooves that mate with the first slide rails and slide in sliding contact with the first slide grooves. Preferably, the first slide grooves are U-shaped, and rollers are provided on the three inner wall surfaces to roll in contact with the first slide rails.

[0066] More specifically, such as Figure 1 , Figure 2 and Figure 4 As shown, the testing system also includes an auxiliary support component 6, which is used to slide in contact with the test bench 8. The auxiliary support component 6 has a telescopic end 61. Specifically, the telescopic end 61 is a telescopic cylinder or a telescopic hydraulic cylinder 9, etc. The telescopic end 61 is used to support the fixed end (cylinder barrel) of the hydraulic cylinder 9. The telescopic end 61 is spaced apart from the second positioning component 3, that is, the contact part between the telescopic end 61 and the cylinder barrel is spaced apart from the hinge part between the second positioning component 3 and the cylinder barrel.

[0067] More specifically, such as Figure 1 As shown, the hydraulic cylinder testing device also includes a test platform 8. Specifically, the test platform 8 can be the ground or a workbench, etc. A base plate 81 is provided on the test platform 8. The base plate 81 can be a base surface made of cement concrete or a plate made of metal plate. A second track 811 is provided on the base plate 81. The second positioning component 3 and the auxiliary support component 6 are slidably connected to the second track 811.

[0068] Specifically, such as Figure 1 As shown, the second track 811 includes two spaced-apart second slide rails that extend in a direction close to the test slope 11.

[0069] More specifically, such as Figure 1 , Figure 2 and Figure 4 As shown, the second positioning component 3 includes a first carriage 31, such as... Figure 4 As shown, the first traveling trolley 31 is provided with a second connecting part 311 and a telescopic mounting seat 312. The second connecting part 311 is used to hinge with the fixed end of the hydraulic cylinder 9. Specifically, as shown... Figure 4 As shown, the second connecting part 311 consists of two connecting ears spaced apart, which are hinged to the cylinder of the hydraulic cylinder 9 via a rotating shaft; the first trolley 31 is slidably connected to the second track 811, and the telescopic mounting seat 312 is used to support the hydraulic cylinder 9.

[0070] Specifically, such as Figure 4 As shown, the telescopic mounting base 312 includes an automatic telescopic component and a mating seat. The mating seat is connected to the telescopic part of the automatic telescopic component. The mating seat is provided with two spaced rollers for contacting the cylinder surface of the hydraulic cylinder 9.

[0071] like Figure 1 As shown, the bottom of the first carriage 31 is provided with multiple pulleys, which are slidably connected to the second slide rail.

[0072] More specifically, such as Figure 1 and Figure 5 As shown, the auxiliary support assembly 6 includes a second carriage 62, on which a telescopic component 621 is provided. The telescopic component 621 has a telescopic end 61. The second carriage 62 is slidably connected to the second track 811. Specifically, the bottom of the second carriage 62 is provided with multiple pulleys that make sliding contact with the second track 811.

[0073] Specifically, such as Figure 5 As shown, the telescopic end 61 is provided with two spaced-apart support wheels to contact the surface of the cylinder barrel of the hydraulic cylinder 9.

[0074] More specifically, such as Figure 1 As shown, the test system also includes a pulley block 7, which is mounted on the frame 1. The counterweight component 4 is connected to one end of the rope in the pulley block 7, and the other end of the rope is connected to the first positioning component 2.

[0075] Specifically, the pulley block 7 includes at least one fixed pulley, and may also include a movable pulley, with the fixed pulley connected to the frame 1.

[0076] More specifically, such as Figure 1As shown, the counterweight assembly 4 includes a bracket and multiple counterweight blocks, with at least some of the counterweight blocks optionally mounted on the bracket, enabling performance testing of different models of hydraulic cylinders 9. The counterweight assembly 4 is located inside the frame 1, which reduces the area it occupies.

[0077] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A hydraulic cylinder testing device, characterized in that, include: The frame (1) is provided with at least one test ramp (11). At least one testing system, the testing system comprising a first positioning component (2), a second positioning component (3) and a counterweight component (4), the first positioning component (2) being slidably disposed on the test ramp (11), the first positioning component (2) being hinged to the lifting end of the hydraulic cylinder (9), the second positioning component (3) being driven to slide on the test platform (8) in a direction close to the test ramp (11), the second positioning component (3) being hinged to the fixed end of the hydraulic cylinder (9), and the counterweight component (4) being connected to the first positioning component (2) so that the first positioning component (2) has a downward tendency.

2. The hydraulic cylinder testing device according to claim 1, characterized in that, The test system also includes a drive component (5), the drive end of which is connected to the second positioning component (3).

3. The hydraulic cylinder testing device according to claim 1, characterized in that, The first positioning component (2) includes: The positioning plate (21) is provided with a first connecting part (211), which is used to hinge with the lifting end of the oil cylinder (9). The test inclined surface (11) is provided with a first track (111), and the positioning plate (21) is slidably connected with the first track (111).

4. The hydraulic cylinder testing device according to any one of claims 1 to 3, characterized in that, The testing system also includes an auxiliary support component (6), which is used to slide in contact with the test bench (8). The auxiliary support component (6) has a telescopic end (61), which is used to support the fixed end of the oil cylinder (9). The telescopic end (61) is spaced apart from the second positioning component (3).

5. The hydraulic cylinder testing device according to claim 4, characterized in that, It also includes a test platform (8), on which a base plate (81) is provided, and a second track (811) is provided on the base plate (81). The second positioning component (3) and the auxiliary support component (6) are both slidably connected to the second track (811).

6. The hydraulic cylinder testing device according to claim 5, characterized in that, The second positioning component (3) includes: The first traveling carriage (31) is provided with a second connecting part (311) and a telescopic mounting seat (312). The second connecting part (311) is used to hinge with the fixed end of the oil cylinder (9). The first traveling carriage (31) is slidably connected with the second track (811). The telescopic mounting seat (312) is used to support the oil cylinder (9).

7. The hydraulic cylinder testing device according to claim 5, characterized in that, The auxiliary support component (6) includes: The second carriage (62) is provided with a telescopic component (621), the telescopic component (621) having the telescopic end (61), and the second carriage (62) is slidably connected to the second track (811).

8. The hydraulic cylinder testing device according to any one of claims 1 to 3, characterized in that, The testing system also includes a pulley block (7), which is mounted on the frame (1). The counterweight component (4) is connected to one end of the rope in the pulley block (7), and the other end of the rope is connected to the first positioning component (2).

9. The hydraulic cylinder testing device according to any one of claims 1 to 3, characterized in that, The counterweight assembly (4) includes a bracket and a plurality of counterweight blocks, at least some of which are optionally mounted on the bracket; And / or, the counterweight assembly (4) is disposed inside the frame (1).

10. The hydraulic cylinder testing device according to any one of claims 1 to 3, characterized in that, There are two test systems, which are arranged symmetrically. And / or, a ladder (12) is provided on the frame (1).

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