Load simulation device for hydraulic cylinder test bed

Abstract

The invention provides a hydraulic cylinder test bed load simulation device, and relates to the technical field of hydraulic cylinder test devices, the hydraulic cylinder test bed load simulation device comprises a rack; the loading cylinder is arranged on the rack in an overturning manner, and the loading cylinder can be overturned to the horizontal or vertical direction; the guide piece is arranged on the rack, and the guide piece is used for guiding and limiting a piston rod of the loading cylinder in the axial direction when the loading cylinder is overturned to the horizontal direction; the vertical loading piece is arranged on the rack in a lifting mode in the vertical direction, and when the loading cylinder is overturned to the vertical direction, the vertical loading piece can be connected with a piston rod of the loading cylinder; and the inclined loading piece is rotationally arranged on the rack and can be connected with the piston rod of the loading cylinder. Therefore, the pressure test requirements under the use working conditions of three postures in the horizontal direction, the vertical direction and the inclined direction can be met, and the application range is expanded.

Description

Technical Field

[0001] The present application relates to the technical field of hydraulic cylinder testing devices, and in particular to a load simulation device for a hydraulic cylinder testing bench. Background Art

[0002] The hydraulic cylinder load simulation test bench simulates the load conditions in the actual working environment to perform load tests and performance evaluations on hydraulic cylinders. It is mainly used to test the pressure, flow, displacement, speed, force and other parameters of the hydraulic cylinder when it is subjected to different loads, so as to evaluate the performance indicators such as the load capacity, stability and sealing of the hydraulic cylinder. The hydraulic cylinder load simulation test bench has a wide range of application value in the research and development, production and maintenance of hydraulic systems. By simulating the load conditions in the actual working environment, the performance indicators and reliability of the hydraulic cylinder can be evaluated more accurately, providing strong support for the design and optimization of the hydraulic system. At the same time, it can also be used for fault diagnosis and maintenance of hydraulic cylinders, helping technicians to quickly locate problems and take effective solutions.

[0003] A hydraulic cylinder load simulation test bench is usually composed of a mechanical test bench, a loading cylinder, a data acquisition system, a hydraulic system and a control system. For example, an invention patent application with publication number CN118499317A discloses a hydraulic cylinder test bench based on electric cylinder loading, which includes a test bench base, an electric cylinder assembly, an electric cylinder bracket assembly carrying the electric cylinder assembly and a hydraulic cylinder bracket assembly carrying the hydraulic cylinder to be tested. The electric cylinder bracket assembly and the hydraulic cylinder bracket assembly are connected to the test bench base in sequence, and the electric cylinder assembly coincides with the axis of the hydraulic cylinder to be tested. The output head of the electric cylinder assembly is connected to the piston rod of the hydraulic cylinder to be tested through a connecting piece. The electric cylinder assembly is used to provide a stable loading force to perform pressure testing and sealing performance testing on the hydraulic cylinder to be tested.

[0004] However, the electric cylinder assembly of the hydraulic cylinder test bench is fixedly installed horizontally on the test bench base, and can only perform pressure tests on the tested hydraulic cylinder in the horizontal direction. In actual applications, the hydraulic cylinder may be used in three directions: horizontal, vertical, and inclined. Therefore, the hydraulic cylinder test bench can only simulate the use of the hydraulic cylinder in the horizontal direction, but cannot simulate the use of the hydraulic cylinder in the vertical and inclined directions, and thus cannot obtain the pressure test results in the vertical and inclined directions. Summary of the invention

[0005] The purpose of the present application is to provide a load simulation device for a hydraulic cylinder test bench, which is used to solve the problem that the hydraulic cylinder test bench in the related art can only simulate the operating conditions of the hydraulic cylinder in the horizontal direction, but cannot simulate the operating conditions in the vertical and inclined directions, and thus cannot obtain the pressure test results under the vertical and inclined direction operating conditions.

[0006] The load simulation device of a hydraulic cylinder test bench provided in this application adopts the following technical solution:

[0007] A load simulation device for a hydraulic cylinder test bench, comprising:

[0008] Stand;

[0009] A loading cylinder, which is flippably disposed on the platform and can be flipped to a horizontal or vertical direction;

[0010] A guide member, the guide member is arranged on the platform, and the guide member is used to guide and limit the piston rod of the loading cylinder along the axial direction when the loading cylinder is flipped to the horizontal direction;

[0011] A vertical loading member, which is vertically movably disposed on the platform, and when the loading cylinder is flipped to a vertical direction, the vertical loading member can be connected to the piston rod of the loading cylinder;

[0012] A tilting loading member is rotatably disposed on the platform and can be connected to the piston rod of the loading cylinder.

[0013] Optionally, the vertical loading member includes a cross bar, a guide cylinder is provided on the platform, a vertical column is provided on the cross bar, the vertical column is slidably passed through the guide cylinder, the vertical column can be connected to the piston rod of the loading cylinder, and the cross bar is used to connect to the piston column of the hydraulic cylinder being tested.

[0014] Optionally, the guide member includes a guide rail, which is fixed on the stand and has a guide groove. A roller is provided at the end of the piston rod of the loading cylinder, and the roller can roll in contact with the inner wall of the guide groove.

[0015] Optionally, it also includes a transmission mechanism, the inclined loading member includes a rocker arm, the rocker arm is rotatably arranged on the platform, the output end of the transmission mechanism is connected to the rocker arm, and the input end of the transmission mechanism is detachably connected to the piston rod of the loading cylinder. When the piston rod of the loading cylinder is extended or retracted, the rocker arm can be driven to swing through the transmission mechanism.

[0016] Optionally, the tilting loader also includes an adjustment seat and a locking member, wherein the adjustment seat is slidably disposed on the rocker arm, the adjustment seat is used to be hinged to the piston column of the hydraulic cylinder being tested, and the locking member is used to limit the sliding of the adjustment seat relative to the rocker arm.

[0017] Optionally, the locking member includes a rotating shaft and a worm, the rotating shaft is rotatably disposed on the adjustment seat, a worm wheel and an adjustment gear are provided on the rotating shaft, a tooth row meshing with the adjustment gear is provided on the rocker arm, and the worm is rotatably disposed on the adjustment seat and meshing with the worm wheel.

[0018] Optionally, it also includes an articulated seat, and the stand is provided with a plurality of positioning parts. The articulated seat is detachably arranged at the positioning part of the stand through a connecting piece, and the articulated seat is used to be articulated with the cylinder body of the hydraulic cylinder to be tested.

[0019] Optionally, the transmission mechanism includes a connecting rod, a screw rod, a slide and an input gear. The slide is slidably arranged on the frame, a screw sleeve is provided on the slide, the screw rod is rotatably arranged on the frame and threadedly connected to the screw sleeve, the connecting rod is hinged to the slide and the rocker arm, a rack is provided on the piston rod of the loading cylinder, and the input gear is connected to the screw rod and detachably meshed with the rack.

[0020] Optionally, the transmission mechanism also includes a clutch seat, a clutch driving member, a moving gear and a fixed gear, the clutch seat is arranged on the table, the clutch driving member is connected to the clutch seat and is used to drive the clutch seat to move in a direction close to or away from the rack, the input gear is rotatably arranged on the clutch seat, the moving gear is rotatably arranged on the clutch seat and connected to the input gear, the fixed gear is rotatably arranged on the table and connected to the screw rod, the moving gear is meshed with the fixed gear and can slide axially relative to the fixed gear.

[0021] Optionally, the transmission mechanism also includes a transmission gear, the clutch drive member includes a screw rod, a screw hole is provided on the platform, the screw rod is threadedly connected to the screw hole and is rotatably connected to the clutch seat, the input gear is connected to the moving gear through a first bevel gear pair, a rotating handle is provided on the input gear, the transmission gear is rotatably provided on the platform and meshes with the fixed gear, and the transmission gear is connected to the screw rod through a second bevel gear pair.

[0022] In summary, the present application includes at least the following beneficial technical effects: when it is necessary to perform a pressure test on the hydraulic cylinder under test in a horizontal posture, the cylinder body of the hydraulic cylinder under test is fixed on the bench in the horizontal direction, and then the loading cylinder is flipped to the horizontal direction, the piston column of the hydraulic cylinder under test is connected to the piston rod of the loading cylinder, and the piston rod of the loading cylinder is controlled to extend, and at the same time, the piston rod of the loading cylinder is guided and limited in the axial direction by the guide member, so as to apply a horizontal force to the hydraulic cylinder under test. When it is necessary to perform a pressure test on the hydraulic cylinder under test in a vertical posture, the loading cylinder is flipped to the vertical direction, and the piston rod of the loading cylinder is connected to the vertical loading member, and then the cylinder body of the hydraulic cylinder under test is fixed on the bench in the vertical direction, and the end of the piston column of the hydraulic cylinder under test is connected to the vertical loading member, and then the loading cylinder drives the vertical loading member to act to apply a vertical downward force to the hydraulic cylinder under test. When it is necessary to perform pressure test on the hydraulic cylinder under test in the tilted direction, connect the tilting loading part to the piston rod of the loading cylinder, hinge the cylinder body of the hydraulic cylinder under test with the bench, hinge the piston column of the hydraulic cylinder under test with the tilting loading part, and then drive the tilting loading part to apply force in the tilted direction to the hydraulic cylinder under test through the loading cylinder. This can meet the pressure test needs under the three working conditions of horizontal, vertical and tilted directions, and expand the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of a load simulation device for a hydraulic cylinder test bench in an embodiment of the present application from a first perspective;

[0024] Figure 2 This is a structural schematic diagram of the load simulation device of the hydraulic cylinder test bench in the embodiment of the present application from a second perspective;

[0025] Figure 3 A cross-sectional view of a load simulation device for a hydraulic cylinder test bench in an embodiment of the present application;

[0026] Figure 4 for Figure 3 A partial enlarged schematic diagram of part D in the middle;

[0027] Figure 5 for Figure 1 A partial enlarged schematic diagram of part A;

[0028] Figure 6 for Figure 2 A partial enlarged schematic diagram of part B;

[0029] Figure 7 for Figure 3 A partial enlarged schematic diagram of part C in the middle.

[0030] Description of reference numerals:

[0031] 10. Stand; 11. Bracket; 12. Guide cylinder; 13. Positioning hole; 14. Limiting groove; 15. Screw hole; 16. T-slot; 17. Guide column;

[0032] 20. Loading cylinder; 21. Piston rod; 211. Rack; 22. Pivot; 23. Roller;

[0033] 30. tilting loading member; 31. swing rod; 311. first pin shaft; 312. gear row; 32. adjustment seat; 33. rotating shaft; 331. worm wheel; 332. adjustment gear; 34. worm;

[0034] 40. Transmission mechanism; 41. Connecting rod; 411. Second pin shaft; 412. Third pin shaft; 42. Screw rod; 43. Slide; 431. Screw sleeve; 44. Input gear; 441. First bevel gear pair; 442. Rotating handle; 443. Gear shaft; 45. Clutch seat; 46. Screw rod; 47. Moving gear; 48. Fixed gear; 49. Transmission gear; 491. Second bevel gear pair;

[0035] 50, hinged seat; 60, I-beam; 70, crossbar; 71, vertical column;

[0036] 80. First force sensor; 90. Second force sensor; 100. Third force sensor; 110. Turning drive member; 120. Bolt; 130. Nut. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1 -Attached Figure 7 , further details of this application are given.

[0038] An embodiment of the present application discloses a load simulation device for a hydraulic cylinder test bench.

[0039] A load simulation device for a hydraulic cylinder test bench includes a bench 10, a loading cylinder 20, a guide member, a vertical loading member, a tilting loading member 30, a transmission mechanism 40, an articulated seat 50, a first force sensor 80, a second force sensor 90, a third force sensor 100 and a flip driving member 110.

[0040] Reference Figures 1 to 4 The cylinder body of the loading cylinder 20 is flippably mounted on the platform 10 via a pivot 22. The loading cylinder 20 may be a double-rod hydraulic cylinder. The loading cylinder 20 can be flipped to a horizontal or vertical direction. The first force sensor 80 is detachably hinged to the end of the piston rod 21 of the loading cylinder 20. The flip driving member 110 is fixedly mounted on the platform 10 and connected to the loading cylinder 20. The flip driving member 110 is used to drive the loading cylinder 20 to flip around the axis of the pivot 22.

[0041] The guide member is provided on the stand 10, and is used to guide and limit the piston rod 21 of the loading cylinder 20 in the axial direction when the loading cylinder 20 is flipped to the horizontal direction. More specifically, the guide member includes a guide rail, which is fixed on the stand 10, and a guide groove is provided on the guide rail. The end of the piston rod 21 of the loading cylinder 20 is provided with a roller 23, and the roller 23 can roll with the inner wall of the guide groove. Furthermore, the guide rail can be an I-beam 60, and the concave portion on the side of the I-beam 60 forms the guide groove.

[0042] The bench 10 is provided with a T-slot 16 for fixing the hydraulic cylinder to be tested. When it is necessary to perform a pressure test on the hydraulic cylinder to be tested in a horizontal working condition, the cylinder body of the hydraulic cylinder to be tested is fixed on the bench 10 in a horizontal direction by a fastener compatible with the T-slot 16. Then, the loading cylinder 20 is driven to flip to a horizontal direction by the flip driving member 110, and the piston rod 21 of the loading cylinder 20 is controlled to extend, so that the roller 23 enters the guide groove of the guide member, and then the piston column end of the hydraulic cylinder to be tested is connected to the first force sensor 80, and a horizontal force is applied to the hydraulic cylinder to be tested by the loading cylinder 20. The loading cylinder 20 can be set as two groups. When the hydraulic cylinder to be tested is a double-rod hydraulic cylinder, two groups of loading cylinders 20 can facilitate bidirectional loading of the hydraulic cylinder to be tested.

[0043] Reference Figures 1 to 3 The vertical loading member is vertically movably mounted on the platform 10. When the loading cylinder 20 is flipped to the vertical direction, the vertical loading member can be connected to the piston rod 21 of the loading cylinder 20. More specifically, the vertical loading member includes a cross bar 70. The platform 10 is provided with a bracket 11. The bracket 11 is provided with a guide cylinder 12. The two ends of the cross bar 70 are respectively provided with vertical columns 71. The vertical columns 71 are slidably penetrated in the guide cylinder 12. The loading cylinder 20 can be arranged in two groups. The vertical columns 71 at both ends of the cross bar 70 can be respectively connected to the piston rods 21 of the two groups of loading cylinders 20. The cross bar 70 is used to connect with the piston column of the hydraulic cylinder to be tested.

[0044] When it is necessary to perform a pressure test on the working condition of the tested hydraulic cylinder in a vertical posture, the second force sensor 90 is fixedly installed in the middle of the crossbar 70. Then the first force sensor 80 is removed from the piston rod 21 of the loading cylinder 20, and then the piston rod 21 of the loading cylinder 20 is controlled to retract, so that the roller 23 withdraws from the guide groove of the guide member, and then the loading cylinder 20 is driven to flip to the vertical direction through the flip driving member 110, and the piston rod 21 of the loading cylinder 20 is fixedly connected to the lower end of the vertical column 71. Then the cylinder body of the tested hydraulic cylinder is fixed on the bench 10 in the vertical direction, and the end of the piston column of the tested hydraulic cylinder is fixedly connected to the second force sensor 90, and then a vertical downward force is applied to the tested hydraulic cylinder through the loading cylinder 20.

[0045] Reference Figures 5 to 7The tilting loading member 30 is rotatably mounted on the platform 10. In an optional embodiment, the specific structure of the tilting loading member 30 and the specific connection relationship with the platform 10 are as follows: the tilting loading member 30 includes a swing rod 31, an adjustment seat 32 and a locking member. The swing rod 31 is rotatably mounted on the platform 10 through a first pin shaft 311. The adjustment seat 32 is slidably mounted on the swing rod 31. The adjustment seat 32 is used to be hinged with the piston column of the hydraulic cylinder to be measured. The third force sensor 100 is hinged with the adjustment seat 32. The locking member is used to limit the sliding of the adjustment seat 32 relative to the swing rod 31. More specifically, the locking member includes a rotating shaft 33 and a worm 34. The rotating shaft 33 is rotatably mounted on the adjustment seat 32. A worm wheel 331 and an adjustment gear 332 are provided on the rotating shaft 33. A tooth row 312 meshing with the adjustment gear 332 is provided on the swing rod 31. The worm 34 is rotatably mounted on the adjustment seat 32 and meshing with the worm wheel 331.

[0046] The tilting loader 30 can be connected to the piston rod 21 of the loading cylinder 20. In an optional embodiment, the connection relationship between the tilting loader 30 and the piston rod 21 of the loading cylinder 20 is as follows: the output end of the transmission mechanism 40 is connected to the rocker arm 31, and the input end of the transmission mechanism 40 is detachably connected to the piston rod 21 of the loading cylinder 20. When the piston rod 21 of the loading cylinder 20 is extended or retracted, the rocker arm 31 can be driven to swing around the axis of the first pin shaft 311 through the transmission mechanism 40.

[0047] The stand 10 is provided with a plurality of positioning parts, and the articulated seat 50 is detachably provided at the positioning part of the stand 10 through a connecting piece, and the articulated seat 50 is used to be articulated with the cylinder body of the hydraulic cylinder to be tested. In an optional embodiment, the specific structure of the positioning part and the connecting piece is as follows: the connecting seat includes a bolt 120 and a nut 130, the positioning part is a positioning hole 13 provided on the stand 10, the bolt 120 is passed through the positioning hole 13 and the articulated seat 50, and the nut 130 is screwed with the bolt 120 to fix the articulated seat 50 on the stand 10.

[0048] When it is necessary to perform a pressure test on the working condition of the hydraulic cylinder under test in an inclined posture, the loading cylinder 20 is driven to flip to the horizontal direction through the flip driving member 110, and the roller 23 is located in the guide groove of the guide member. Then, the swing rod 31 is swung to the inclined state through the transmission mechanism 40, and then the cylinder body of the hydraulic cylinder under test is hinged to the hinge seat 50, and the piston column end of the hydraulic cylinder under test is fixedly connected to the third force sensor 100. Then, the input end of the transmission mechanism 40 is connected to the piston rod 21 of the loading cylinder 20 to control the telescopic action of the piston rod 21 of the loading cylinder 20, and the transmission mechanism 40 drives the swing rod 31 to swing around the axis of the first pin 311, so as to apply a force in the inclined direction to the hydraulic cylinder under test.

[0049] The worm gear 331, the rotating shaft 33 and the adjusting gear 332 can be driven to rotate by rotating the worm 34, and the adjusting seat 32 can be driven to slide along the swing rod 31 under the interaction between the adjusting gear 332 and the gear row 312, so as to adjust the position of the adjusting seat 32 on the swing rod 31. At the same time, the articulated seat 50 is installed at the positioning holes 13 at different positions, and the position of the articulated seat 50 on the bench 10 can be adjusted, so that the inclination of the tested hydraulic cylinder can be adjusted according to the requirements of the loading test or the tested hydraulic cylinders of different specifications can be adapted.

[0050] Reference Figures 4 to 7 In an optional embodiment, the specific structure of the transmission mechanism 40 and the specific connection relationship between the transmission mechanism 40 and the rocker arm 31 and the piston rod 21 of the loading cylinder 20 are as follows: the transmission mechanism 40 includes a connecting rod 41, a screw rod 42, a slide 43, an input gear 44, a clutch seat 45, a clutch driving member, a movable gear 47, a fixed gear 48 and a transmission gear 49. A guide column 17 is provided on the stand 10. The slide 43 is slidably mounted on the guide column 17 of the stand 10. A screw sleeve 431 is provided on the slide 43. The screw rod 42 is rotatably mounted on the stand 10 and is screwed to the screw sleeve 431. The two ends of the connecting rod 41 are hinged to the slide 43 and the rocker arm 31 through a second pin shaft 411 and a third pin shaft 412, respectively.

[0051] A rack 211 is provided on the piston rod 21 of the loading cylinder 20. The input gear 44 is connected to the screw rod 42 and is detachably meshed with the rack 211. The input gear 44 and the screw rod 42 can be connected in the following manner:

[0052] The clutch seat 45 is arranged on the stand 10, and the clutch driving member is connected to the clutch seat 45 and is used to drive the clutch seat 45 to move in a direction close to or away from the rack 211. More specifically, the clutch driving member includes a screw rod 46, and a limiting groove 14 is provided on the stand 10. The clutch seat 45 is slidably arranged in the limiting groove 14. The stand 10 is provided with a screw hole 15. The screw rod 46 is screwed to the screw hole 15 and is rotatably connected to the clutch seat 45.

[0053] The input gear 44 is rotatably mounted on the clutch seat 45 via a gear shaft 443, and a rotating handle 442 is provided on the input gear 44. The movable gear 47 is rotatably mounted on the clutch seat 45 and connected to the input gear 44 via a first bevel gear pair 441. The fixed gear 48 is rotatably mounted on the gantry 10, and the movable gear 47 meshes with the fixed gear 48 and can slide axially relative to the fixed gear 48. The fixed gear 48 is connected to the screw rod 42, and more specifically, the transmission gear 49 is rotatably mounted on the gantry 10 and meshes with the fixed gear 48, and the transmission gear 49 is connected to the screw rod 42 via a second bevel gear pair 491.

[0054] When it is necessary to perform a pressure test on the working condition of the tested hydraulic cylinder in an inclined posture, the loading cylinder 20 is driven to flip to a horizontal direction through the flip driving member 110, and the roller 23 is located in the guide groove of the guide member. Then, when the input gear 44 is separated from the rack 211, the rotating handle 442 is turned to drive the screw rod 42 to rotate through the first bevel gear pair 441, the moving gear 47, the fixed gear 48, the transmission gear 49 and the second bevel gear pair 491, and the slide 43 is driven to slide along the guide column 17 through the screw rod 42, and then the swing rod 31 is driven to swing to a tilted state through the connecting rod 41.

[0055] Then, the cylinder body of the hydraulic cylinder to be tested is hinged to the hinge seat 50, and the piston column end of the hydraulic cylinder to be tested is fixedly connected to the third force sensor 100. Then, the screw rod 46 is rotated, and the clutch seat 45 is driven to move upward through the screw rod 46, so that the movable gear 47 slides axially relative to the fixed gear 48 until the input gear 44 is meshed with the rack 211. Then, the piston rod 21 of the loading cylinder 20 is controlled to move telescopically, and the input gear 44 is driven to rotate through the rack 211, and then the screw rod 42 is driven to rotate through the first bevel gear pair 441, the movable gear 47, the fixed gear 48, the transmission gear 49 and the second bevel gear pair 491, and the slide 43 is driven to slide along the guide column 17 through the screw rod 42, and then the swing rod 31 is driven to swing through the connecting rod 41 to apply a force in the tilt direction to the hydraulic cylinder to be tested.

[0056] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A load simulation device for a hydraulic cylinder test bench, characterized in that: include: Stand (10); A loading cylinder (20), the loading cylinder (20) being flippably disposed on the platform (10), and the loading cylinder (20) being capable of flipping to a horizontal or vertical direction; A guide member, the guide member being arranged on the platform (10), and the guide member being used to guide and limit the piston rod (21) of the loading cylinder (20) along the axial direction when the loading cylinder (20) is flipped to a horizontal direction; A vertical loading member, the vertical loading member being arranged on the platform (10) in a vertically movably movable manner, and when the loading cylinder (20) is turned over to a vertical direction, the vertical loading member can be connected to a piston rod (21) of the loading cylinder (20); A tilting loading member (30) is rotatably disposed on the platform (10) and can be connected to the piston rod (21) of the loading cylinder (20).

2. A hydraulic cylinder test bench load simulation device according to claim 1, characterized in that: The vertical loading member comprises a cross bar (70), a guide cylinder (12) is provided on the platform (10), a vertical column (71) is provided on the cross bar (70), the vertical column (71) is slidably inserted into the guide cylinder (12), the vertical column (71) can be connected to the piston rod (21) of the loading cylinder (20), and the cross bar (70) is used to connect to the piston column of the hydraulic cylinder to be tested.

3. The load simulation device for a hydraulic cylinder test bench according to claim 1, characterized in that: The guide member comprises a guide rail, the guide rail is fixed on the platform (10), a guide groove is provided on the guide rail, and a roller (23) is provided at the end of the piston rod (21) of the loading cylinder (20), and the roller (23) can roll in contact with the inner wall of the guide groove.

4. The load simulation device for a hydraulic cylinder test bench according to claim 1, characterized in that: The invention also comprises a transmission mechanism (40), wherein the tilting loading member (30) comprises a rocker rod (31), wherein the rocker rod (31) is rotatably arranged on the platform (10), wherein an output end of the transmission mechanism (40) is connected to the rocker rod (31), and an input end of the transmission mechanism (40) is detachably connected to a piston rod (21) of the loading cylinder (20), and when the piston rod (21) of the loading cylinder (20) is extended or retracted, the rocker rod (31) can be driven to swing through the transmission mechanism (40).

5. A load simulation device for a hydraulic cylinder test bench according to claim 4, characterized in that: The tilt loading member (30) further comprises an adjusting seat (32) and a locking member, wherein the adjusting seat (32) is slidably arranged on the rocker arm (31), the adjusting seat (32) is used for being hinged to the piston column of the hydraulic cylinder to be tested, and the locking member is used for limiting the sliding of the adjusting seat (32) relative to the rocker arm (31).

6. A hydraulic cylinder test bench load simulation device according to claim 5, characterized in that: The locking member comprises a rotating shaft (33) and a worm (34); the rotating shaft (33) is rotatably arranged on the adjusting seat (32); a worm wheel (331) and an adjusting gear (332) are arranged on the rotating shaft (33); a tooth row (312) meshing with the adjusting gear (332) is arranged on the swing rod (31); and the worm (34) is rotatably arranged on the adjusting seat (32) and meshing with the worm wheel (331).

7. A hydraulic cylinder test bench load simulation device according to claim 4, characterized in that: It also includes an articulated seat (50), the platform (10) is provided with a plurality of groups of positioning parts, the articulated seat (50) is detachably arranged at the positioning parts of the platform (10) through a connecting piece, and the articulated seat (50) is used to be articulated with the cylinder body of the hydraulic cylinder to be tested.

8. The load simulation device for a hydraulic cylinder test bench according to claim 4, characterized in that: The transmission mechanism (40) comprises a connecting rod (41), a screw rod (42), a slide (43) and an input gear (44); the slide (43) is slidably arranged on the platform (10); a screw sleeve (431) is arranged on the slide (43); the screw rod (42) is rotatably arranged on the platform (10) and is threadedly connected to the screw sleeve (431); the connecting rod (41) is hinged with the slide (43) and the rocker (31); a rack (211) is arranged on the piston rod (21) of the loading cylinder (20); and the input gear (44) is connected with the screw rod (42) and is detachably meshed with the rack (211).

9. A hydraulic cylinder test bench load simulation device according to claim 8, characterized in that: The transmission mechanism (40) further comprises a clutch seat (45), a clutch driving member, a moving gear (47) and a fixed gear (48); the clutch seat (45) is arranged on the platform (10); the clutch driving member is connected to the clutch seat (45) and is used to drive the clutch seat (45) to move in a direction close to or away from the rack (211); the input gear (44) is rotatably arranged on the clutch seat (45); the moving gear (47) is rotatably arranged on the clutch seat (45) and is connected to the input gear (44); the fixed gear (48) is rotatably arranged on the platform (10) and is connected to the screw rod (42); the moving gear (47) is meshed with the fixed gear (48) and can slide axially relative to the fixed gear (48).

10. A load simulation device for a hydraulic cylinder test bench according to claim 9, characterized in that: The transmission mechanism (40) further comprises a transmission gear (49), the clutch drive member comprises a screw rod (46), a screw hole (15) is provided on the platform (10), the screw rod (46) is screwed to the screw hole (15) and is rotatably connected to the clutch seat (45), the input gear (44) is connected to the movable gear (47) via a first bevel gear pair (441), a rotating handle (442) is provided on the input gear (44), the transmission gear (49) is rotatably arranged on the platform (10) and is meshed with the fixed gear (48), and the transmission gear (49) is connected to the screw rod (42) via a second bevel gear pair (491).

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