Hydraulic actuator load capacity detection device

Abstract

The utility model discloses hydraulic executing element load capacity detection device relates to swing oil cylinder load detection device field, the utility model discloses a workbench, swing oil cylinder, swing oil cylinder's output end transmission has the output rod, and the output rod's end flange is installed with load mechanism, load mechanism is personally experienced sth, is second support rod, second support rod's outside thread connection has the adjusting sleeve, and the outside of adjusting sleeve is stacked and is equipped with a plurality of counterweight disc, the utility model discloses the thread connection structure of adjusting sleeve realizes the continuous position adjustment of counterweight disc, and the axial positioning function of cooperation limit board, avoid the moment distortion caused by load eccentricity, and the number adjustment of cooperation counterweight disc, to realize the multiple adjustment of counterweight group in this way, promote the adjustment convenience of counterweight group component, at the same time, the dynamic compression force of limit ring provides, and its outside fluting setting is compatible standard wrench tool, need not special equipment to be able to quick locking counterweight disc group.

Description

Technical Field

[0001] This utility model relates to the field of swing cylinder load detection device, specifically a load capacity detection device for hydraulic actuators. Background Technology

[0002] The swing cylinder load detection device evaluates cylinder performance through various testing methods, including torque testing, pressure resistance testing, and fatigue testing. It records lever arm rotation data through an encoder and combines an adjustable load pan to simulate actual working conditions, reducing costs and improving testing accuracy. Dynamic performance monitoring uses a displacement sensor to track piston position in real time, and combines filtering and differential algorithms to improve low-frequency testing accuracy.

[0003] Current load testing of swing cylinders typically involves installing an adjustable counterweight plate at the output end of the swing cylinder and testing the load capacity of the swing cylinder based on the selection of the counterweight. However, there is a problem in the actual testing process: traditional counterweight plates are usually stacked assembly structures, which have poor adjustment convenience. In view of this, the inventors urgently need to design a new load assembly adjustment structure to improve the adjustment convenience of the load counterweight plate. Summary of the Invention

[0004] Based on this, the purpose of this utility model is to provide a load capacity testing device for hydraulic actuators, so as to solve the technical problem of poor convenience of adjusting the counterweight plate in the traditional load test of swing cylinders.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic actuator load capacity detection device, including a worktable and a swing cylinder, wherein the output end of the swing cylinder is connected to an output rod, and a load mechanism is installed on the end flange of the output rod;

[0006] The load mechanism includes a first support rod and a second support rod. An adjusting sleeve is threaded to the outer side of the second support rod, and several counterweight discs are stacked and sleeved on the outer side of the adjusting sleeve.

[0007] By adopting the above technical solution and setting the flange connection between the output rod and the load mechanism, the swing cylinder and the load part can be quickly disassembled and assembled, which facilitates the compatibility test of cylinders of different specifications. At the same time, the stacked structure of the adjusting sleeve and the counterweight plate makes the load adjustment highly flexible. Users only need to increase or decrease the number of counterweight plates or rotate the sleeve to change its axial position to simulate the continuous change of working conditions from light load to heavy load.

[0008] Furthermore, a limiting plate is fixedly provided on one side of the adjusting sleeve, and the limiting plate is used to limit the position of the counterweight plate.

[0009] By adopting the above technical solution, the fixed setting of the limiting plate effectively restricts the axial displacement of the counterweight plate, prevents the counterweight plate from shifting due to vibration or inertia during the test, and ensures the stability of the load torque.

[0010] Furthermore, a limit ring is installed on the outer thread of the adjusting sleeve to abut against the counterweight plate.

[0011] By adopting the above technical solution, the threaded installation method of the limiting ring provides an adjustable radial clamping force for the counterweight plate, and the two-way locking of the counterweight plate assembly can be achieved by screwing.

[0012] Furthermore, the limiting plate and the outer side of the limiting ring are provided with several slots at equal intervals, which are the points where the external wrench applies force.

[0013] By adopting the above technical solution, the equidistant slot design on the outer side of the limiting plate and the limiting ring provides a standardized wrench application point, enabling operators to efficiently complete tightening or loosening operations without special tools. At the same time, the slot layout evenly distributes the wrench application point, avoiding structural deformation or thread damage caused by local stress concentration.

[0014] Furthermore, the first support rod and the second support rod are directly welded together, and a reinforcing foot plate is welded and fixed at the connection angle.

[0015] By adopting the above technical solution, the direct welding structure between the first support rod and the second support rod eliminates the risk of loosening of the connecting parts, ensures the rigidity of the load transmission path, and avoids torque attenuation caused by fretting during testing.

[0016] Furthermore, a mounting plate is fixedly installed above the workbench, and the swing cylinder is detachably connected to the mounting plate by bolts.

[0017] By adopting the above technical solution, the fixed connection between the mounting plate and the workbench provides a stable mounting base for the swing cylinder. The detachable structure achieved by bolts allows the cylinder replacement or maintenance operations to be performed without disassembling the entire frame. At the same time, as an independent transition component, the mounting plate can be customized with opening layouts according to different cylinder flange standards, significantly expanding the device's compatibility with multiple types of actuators.

[0018] Furthermore, the first support rod is connected to the output rod flange, and the swing cylinder is connected to an external hydraulic device via a solenoid valve.

[0019] By adopting the above technical solution, the flange connection between the first support rod and the output rod ensures the coaxiality of the force transmission path and eliminates the additional bending moment error caused by installation eccentricity.

[0020] In summary, the present invention has the following main advantages:

[0021] This utility model achieves continuous position adjustment of the counterweight disc through the threaded connection structure of the adjusting sleeve. Combined with the axial positioning function of the limiting plate, it avoids torque distortion caused by load eccentricity. At the same time, it can achieve multiple adjustments of the counterweight assembly by adjusting the number of counterweight discs, thereby improving the adjustment convenience of the counterweight assembly. Meanwhile, the limiting ring provides dynamic clamping force, and its outer groove is designed to be compatible with standard wrench tools, so that the counterweight disc assembly can be quickly locked without special equipment, which significantly improves the adjustment efficiency.

[0022] This invention directly transmits the output torque of the swing cylinder by connecting the output rod to the flange of the load mechanism, eliminating the backlash error of the traditional transmission chain and ensuring the benchmark accuracy of load force measurement. At the same time, the split design of the load mechanism simplifies the assembly process, and the welding of reinforced foot plates improves the bending stiffness and suppresses elastic deformation interference during testing. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention;

[0025] Figure 3 This is a top view cross-sectional structural diagram of the present invention;

[0026] Figure 4 This utility model Figure 3 A magnified structural diagram of point A in the middle.

[0027] In the diagram: 1. Workbench; 2. Mounting plate; 3. Swing cylinder; 4. Output rod; 5. Load mechanism; 501. First support rod; 502. Second support rod; 503. Adjusting sleeve; 504. Limiting plate; 505. Limiting ring; 6. Counterweight plate; 7. Reinforcing foot plate. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In this embodiment: a hydraulic actuator load capacity detection device, such as... Figure 1-4 As shown, it includes a worktable 1 and a swing cylinder 3. The output end of the swing cylinder 3 is connected to an output rod 4, and a load mechanism 5 is installed on the end flange of the output rod 4.

[0030] The load mechanism 5 includes a first support rod 501 and a second support rod 502. The outer side of the second support rod 502 is threaded with an adjusting sleeve 503. Several counterweight discs 6 are stacked on the outer side of the adjusting sleeve 503. The output rod 4 is connected to the flange of the load mechanism 5, which realizes the quick assembly and disassembly of the swing cylinder 3 and the load part, and facilitates the compatibility testing of cylinders of different specifications. At the same time, the stacked structure of the adjusting sleeve 503 and the counterweight discs 6 makes the load adjustment highly flexible. Users only need to increase or decrease the number of counterweight discs or rotate the sleeve to change its axial position to simulate the continuous change of working conditions from light load to heavy load. In addition, the split support rod of the load mechanism 5 simplifies the structural complexity and reduces manufacturing and maintenance costs.

[0031] See Figure 1 , Figure 2 , Figure 3 , Figure 4 A limiting plate 504 is fixedly provided on one side of the adjusting sleeve 503. The limiting plate 504 is used to limit the position of the counterweight plate 6. The fixed setting of the limiting plate 504 effectively limits the axial displacement of the counterweight plate 6, preventing the counterweight plate 6 from shifting due to vibration or inertia during the test, and ensuring the stability of the load torque. At the same time, the integration of this limiting structure with the adjusting sleeve 503 avoids the need to add additional clamping components, maintaining the overall compactness and improving assembly efficiency.

[0032] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The adjusting sleeve 503 has a limit ring 505 installed on its outer thread to abut against the counterweight plate 6. The threaded installation of the limit ring 505 provides an adjustable radial clamping force for the counterweight plate 6. The counterweight plate assembly can be locked in both directions by turning. At the same time, this setting and the limit plate 504 form a dual positioning mechanism: the limit plate 504 provides axial positioning of the foundation, while the limit ring applies dynamic locking force, effectively dealing with alternating impact loads in the swing test. In addition, the detachable feature of the limit ring 505 facilitates the quick replacement or expansion of the counterweight plate assembly, significantly improving the adaptability of the test process.

[0033] See Figure 1 , Figure 2 , Figure 3 , Figure 4The outer sides of the limiting plate 504 and the limiting ring 505 are provided with several slots at equal intervals, which serve as the points of force application for external wrenches. The equidistant slot design on the outer sides of the limiting plate 504 and the limiting ring 505 provides standardized wrench application points, allowing operators to efficiently complete tightening or loosening operations without special tools. At the same time, the slot layout evenly distributes the wrench application points, avoiding structural deformation or thread damage caused by local stress concentration. In addition, it is compatible with common manual or pneumatic wrench interfaces, which are suitable for manual adjustment in laboratory environments and can also be connected to automated equipment to achieve precise force control and locking, greatly enhancing the engineering practicality of the device.

[0034] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The first support rod 501 and the second support rod 502 are directly welded together, and a reinforcing foot plate 7 is welded and fixed at the connection angle. The direct welding structure of the first support rod 501 and the second support rod 502 eliminates the risk of loosening of the connecting parts, ensures the rigidity of the load transmission path, and avoids torque attenuation caused by fretting during the test. At the same time, the reinforcement welding of the reinforcing foot plate 7 at the connection angle significantly improves the bending stiffness, especially effectively suppressing the elastic deformation of the support rod in the high-frequency swing test. In addition, the integrated welding design reduces the sources of assembly error, ensures the accuracy of the lever arm length of the load mechanism 5, and provides a reliable geometric reference for torque calculation.

[0035] See Figure 1 , Figure 2 , Figure 3 , Figure 4 A mounting plate 2 is fixedly installed above the workbench 1. The swing cylinder 3 is detachably connected to the mounting plate 2 by bolts. The fixed connection between the mounting plate 2 and the workbench 1 provides a stable mounting base for the swing cylinder 3. The detachable structure achieved by bolts allows the cylinder to be replaced or maintained without disassembling the entire frame. At the same time, the mounting plate 2, as an independent transition component, can be customized with opening layouts according to different cylinder flange standards, significantly expanding the compatibility of the device with multiple types of actuators. In addition, the rigid foundation of the workbench 1 has the load-bearing capacity to isolate external vibration interference, ensuring the environmental stability of high-precision load testing.

[0036] See Figure 1 , Figure 2 , Figure 3 , Figure 4The first support rod 501 is flange-connected to the output rod 4, and the swing cylinder 3 is connected to the external hydraulic device through a solenoid valve. The flange connection between the first support rod 501 and the output rod 4 ensures the coaxiality of the force transmission path and eliminates the additional bending moment error caused by installation eccentricity. At the same time, the setting of the swing cylinder 3 being connected to the external hydraulic device through the solenoid valve supports remote control of the cylinder start, stop and reversal, so that the testing process can be integrated into the automation system. In addition, the fast response characteristics of the solenoid valve enable precise control of the cylinder action sequence, providing core drive guarantee for dynamic load testing.

[0037] The implementation principle of this embodiment is as follows: First, the swing cylinder 3 is fixed to the mounting plate 2 of the workbench 1 with bolts. Its output end flange is connected to the output rod 4. The first support rod 501 of the load mechanism 5 is connected to the flange of the output rod 4, so that the second support rod 502, which is welded into an angled structure, extends to the load action area. During adjustment, the adjusting sleeve 503 is screwed on the outside of the second support rod 502. Several counterweight plates 6 are stacked on the sleeve according to the test requirements. The counterweight plate group is axially positioned by the limiting plate 504. Then, the limiting ring 505 is tightened to press the counterweight plate 6. The reinforcing foot plate 7 welded to the connection between the first support rod 501 and the second support rod 502 enhances the structural stability. During the test, the external hydraulic device drives the swing cylinder 3 through the solenoid valve, which drives the load mechanism 5 to perform the swing action. The resistance torque generated by the counterweight plate 6 is the load to be tested. The threaded advancement of the adjusting sleeve 503 realizes the rapid adjustment of the position and number of counterweight plates. The slots on the limiting plate 504 and the limiting ring 505 facilitate the operation of the wrench.

[0038] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A hydraulic actuator load capacity detection device, characterized in that: Includes a worktable (1) and a swing cylinder (3). The output end of the swing cylinder (3) is connected to an output rod (4), and the end flange of the output rod (4) is equipped with a load mechanism (5). The load mechanism (5) includes a first support rod (501) and a second support rod (502). The outer side of the second support rod (502) is threaded with an adjusting sleeve (503). Several counterweight discs (6) are stacked on the outer side of the adjusting sleeve (503).

2. The hydraulic actuator load capacity detection device according to claim 1, characterized in that: A limiting plate (504) is fixedly provided on one side of the adjusting sleeve (503), and the limiting plate (504) is used to limit the position of the counterweight plate (6).

3. The hydraulic actuator load capacity detection device according to claim 2, characterized in that: The adjusting sleeve (503) is threaded with a limit ring (505) on its outer side to abut against the counterweight plate (6).

4. The hydraulic actuator load capacity detection device according to claim 3, characterized in that: The limiting plate (504) and the limiting ring (505) are provided with several slots at equal intervals on their outer sides, which are the points where the external wrench can exert force.

5. The hydraulic actuator load capacity detection device according to claim 1, characterized in that: The first support rod (501) and the second support rod (502) are directly welded together, and a reinforcing foot plate (7) is welded and fixed at the connecting angle.

6. The hydraulic actuator load capacity detection device according to claim 1, characterized in that: An mounting plate (2) is fixedly installed above the workbench (1), and the swing cylinder (3) is detachably connected to the mounting plate (2) by bolts.

7. The hydraulic actuator load capacity detection device according to claim 1, characterized in that: The first support rod (501) is flange-connected to the output rod (4), and the swing cylinder (3) is connected to an external hydraulic device through a solenoid valve.

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