A synchronous automatic clutch oil damping force test device

Abstract

The present invention provides a synchronous automatic clutch oil damping force test device, which is composed of a bracket, a switching assembly, an oil damping equivalent test assembly, a force test assembly, a drive unit, and a lubrication control oil circuit; the test device is arranged horizontally, and the oil damping equivalent test assembly, the switching assembly, the force test assembly, and the drive unit are coaxially arranged on the bracket, the drive unit adopts a double-acting oil cylinder, and a displacement sensor is arranged on the oil cylinder. The force test assembly is located between the test assembly and the drive unit, and the force test assembly is connected to the output end of the oil cylinder through a joint bearing. The action of the oil cylinder is controlled by a solenoid valve, and the output thrust of the oil cylinder is adjusted by a relief valve. A regulating valve is arranged on the oil inlet oil circuit of the test assembly, and the output of the force test assembly and the displacement sensor is the test result of the oil damping structure characteristics. The patent of the present invention is suitable for testing the damping force characteristics of the oil damping structure of a synchronous automatic clutch under different oil pressure, flow, and load conditions.

Description

Technical Field

[0001] The invention relates to an oil damping force testing device, in particular to a testing device for testing the oil damping structural performance of a synchronous automatic clutch. Background Art

[0002] The synchronous automatic clutch is a one-way overrunning clutch that automatically engages and disengages according to the speed difference between the driving and driven shafts. The clutch automatically engages when the speed of the clutch input end is greater than the speed of the output end, and automatically disengages when the speed of the clutch input end is less than the speed of the output end. The synchronous automatic clutch has the characteristics of high power density, compact structure and high reliability. It has been widely used in combined drive devices in many fields such as combined power units of ships, BPRT units in the steel industry, and steam-electric dual-drive units in the chemical industry. The synchronous automatic clutch is mainly composed of an input component, an output component and a sliding component. A ratchet and pawl mechanism is provided between the sliding component and the output component of the clutch, and the axial movement of the sliding member is triggered by the ratcheting action between the ratchet and pawl. The damping structure of the synchronous automatic clutch generally adopts an oil damping structure. The internal parts of the clutch enclose a damping oil chamber. During the movement of the clutch sliding assembly, the oil in the damping oil chamber is squeezed to generate a damping force during the clutch engagement and disengagement process, so as to buffer the collision between the sliding assembly and the input part during the engagement process and prevent frequent engagement and disengagement actions caused by speed fluctuations during the clutch engagement operation. The damping structure characteristics have a great influence on the stable operation of the synchronous automatic clutch.

[0003] There are many factors that affect the damping effect of the clutch oil damping structure. It is difficult to accurately obtain the magnitude of the damping force directly through calculation due to the influence of many factors such as oil temperature, throttle aperture, working clearance of the damping structure sliding mating surface, etc. The relationship between the damping force and the damping structure is a problem that must be solved in the design of the damping structure. Testing the damping effect under a specific clutch damping structure through experimental methods and establishing the relationship between the clutch damping structure and environmental factors are effective ways to achieve damping structure design and optimization. Summary of the invention

[0004] The invention aims to test the performance of the oil damping structure of a synchronous automatic clutch and provides a test device for simulating the working environment of the damping structure and performing oil damping force testing.

[0005] The technical solution adopted by the present invention to solve its technical problems is:

[0006] A synchronous automatic clutch oil damping force test device comprises a bracket, a switching assembly, an oil damping equivalent test assembly, a force test assembly, a drive unit, and a lubrication control oil circuit; the oil damping equivalent test assembly, the switching assembly, the force test assembly, and the drive unit are coaxially and horizontally arranged on the bracket, the drive unit adopts a double-acting cylinder, a displacement sensor is provided on the cylinder, the force test assembly is located between the test assembly and the drive unit, the force test assembly is connected to the output end of the cylinder through a joint bearing, the cylinder action is controlled by a solenoid valve, the cylinder output thrust is adjusted by a relief valve, and a regulating valve is provided on the oil inlet circuit of the test assembly for adjusting the working environment of the oil damping structure.

[0007] Furthermore, the damping ring and the sliding ring of the oil damping equivalent test assembly are installed on the support shaft through a cylindrical pair with clearance fit. The damping ring and the sliding ring can slide on the support shaft. The area surrounded by the support shaft, the damping ring and the sliding ring constitutes a damping oil chamber structure. The sliding ring is provided with radial oil holes, and the lubricating oil leaked through the lubricating oil gap on the test assembly flows out, thereby avoiding the additional effect of lubricating oil accumulation on the test.

[0008] Furthermore, the force testing assembly is located between the test assembly and the driving unit, the force testing assembly is rigidly connected to the test assembly, and the axis of the force testing assembly is coaxially arranged with the axis of the test assembly.

[0009] Furthermore, the driving unit adopts a double-acting cylinder, the movement direction of the double-acting cylinder is arranged parallel to the geometric axis of the test component, and the thrust point of the double-acting cylinder acts on the geometric center of the force test component. The force test component and the output end of the double-acting cylinder are connected to the joint bearing through a connecting pin. This connection method can compensate for processing and assembly errors and reduce the interference of non-damping forces on the test component.

[0010] Furthermore, the double-acting oil cylinder is externally connected to a center-drainage three-position four-way solenoid valve, and a relief valve is provided on the front end oil inlet line of the three-position four-way solenoid valve. The maximum output pressure of the oil cylinder is controlled by setting the working pressure of the relief valve.

[0011] Furthermore, a flow meter, a throttle valve, a pressure sensor, a temperature sensor, and an overflow valve are provided on the oil inlet line of the test component. The overflow valve is used to adjust the oil supply pressure of the oil circuit, the throttle valve adjusts the oil supply flow of the test component, and the remaining sensors detect the working environment of the oil damping structure.

[0012] The beneficial effects of the present invention are:

[0013] For the synchronous automatic clutch with damping structure, this test device has a simple structure and can simulate different clutch damping structures, oil pressure, flow, and load conditions under different working environments. It can test the damping force generated by the clutch damping structure at different damping action strokes. The test results can be used for damping structure design and optimization. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 Structural principle diagram of the oil damping test device for the synchronous automatic clutch;

[0016] Figure 2 Schematic diagram of the oil damping equivalent test assembly structure;

[0017] Figure 3 Schematic diagram of the oil damping starting position of the oil damping equivalent test assembly;

[0018] Figure 4 Schematic diagram of the end position of oil damping action in the oil damping equivalent test assembly.

[0019] In the figure, 100. bracket, 200. adapter plate I, 210. adapter plate II, 300. support shaft, 310. damping ring, 320. sliding ring, 400. connecting piece I, 410. force sensor, 420. connecting piece II, 430. connecting pin, 500. double-acting cylinder, 510. spherical bearing, 520. displacement sensor, 600. three-position four-way reversing valve, 610. overflow valve, 700. flow meter, 710. pressure sensor, 720. throttle valve, 730. temperature sensor, 740. overflow valve. DETAILED DESCRIPTION

[0020] The present invention is further described below according to the accompanying drawings:

[0021] Figure 1 In the embodiment, the oil damping test device for the synchronous automatic clutch is composed of a bracket 100, an oil damping equivalent test assembly, a transfer assembly, a force test assembly, a drive unit, and a lubrication control oil circuit. The bracket 100 is used to integrate and install various components. The entire test device is arranged horizontally, and the oil damping equivalent test assembly, the transfer assembly, the force test assembly, and the drive unit are arranged coaxially.

[0022] Figure 2 In the oil damping equivalent test assembly, the damping ring 310 and the sliding ring 320 are composed of a support shaft 300, a damping ring 310 and a sliding ring 320. The damping ring 310 and the sliding ring 320 are installed on the support shaft 300 through a cylindrical pair with clearance fit. The damping ring 310 and the sliding ring 320 can slide on the support shaft 300. The area A surrounded by the support shaft 300, the damping ring 310 and the sliding ring 320 constitutes a damping oil chamber structure. The damping ring 310 and the sliding ring 320 move axially under the action of external force until Figure 3 At the position shown, the fluid in area A produces a damping effect on the axial moving parts, moving to Figure 4 The damping action stroke ends in the position shown.

[0023] Different damping structures require different equivalent test assemblies for simulation tests. The oil supply method and oil circuit distribution in area A are completely consistent with the oil damping structure. The sliding ring 320 is provided with radial oil holes, and the oil leaked from the test assembly through the oil clearance flows out, avoiding the accumulation of lubricating oil to form an additional effect on the test and reduce the test accuracy of the damping effect.

[0024] Figure 1 In the present invention, the test assembly is connected to other parts of the device through the adapter assembly. The adapter assembly is composed of an adapter plate I 200 and an adapter plate II 210. The adapter plate I 200 is used for transition connection between the support shaft 300 and the bracket 100, and the adapter plate II 210 is used for transition connection between the sliding ring 320 and the connecting member I 400 in the force test assembly.

[0025] Figure 1 In the figure, the force testing assembly is located between the test assembly and the driving unit. The force testing assembly consists of a connector I 400, a force sensor 410, a connector II 420, and a connecting pin 430. The force testing assembly is rigidly connected to the test assembly. The axis of the force testing assembly is coaxially arranged with the axis of the test assembly. The force sensor 410 is installed between the connector I 400 and the connector II 420 through a threaded connection, and the connecting pin 430 is fixed on the connector II 420.

[0026] Figure 1 In the embodiment, the driving unit is composed of a double-acting oil cylinder 500, a spherical bearing 510, and a displacement sensor 520. The movement direction of the double-acting oil cylinder 500 is arranged parallel to the geometric axis of the test assembly, and the thrust point of the double-acting oil cylinder 500 acts on the geometric center of the force test assembly. The force test assembly is connected to the output end of the double-acting oil cylinder 500 and the spherical bearing 510 through a connecting pin 430. The driving unit can drive the sliding ring 320 to move. The force sensor 410 is used to test the damping force generated between the sliding ring 320 and the support shaft 300 during the movement. This connection method can compensate for the deviation between the axis of the test assembly and the movement direction of the oil cylinder and the position deviation of the oil cylinder output point caused during the processing and assembly process, reduce the interference of the non-damping force on the test assembly, and thus improve the test accuracy of the damping force.

[0027] Figure 1In the figure, the double-acting oil cylinder 500 is externally connected to a central leakage three-position four-way solenoid valve 600. When both sides are in the working position, the working oil enters the double-acting oil cylinder 500, which can drive the double-acting oil cylinder 500 to push the test assembly to move in different directions. During the process, the force sensor 410 measures and outputs the magnitude of the damping force, and the displacement sensor 520 measures and outputs the displacement of the sliding part in the test assembly. A relief valve 610 is provided on the front oil inlet line of the three-position four-way solenoid valve 600. The maximum output pressure of the oil cylinder is controlled by setting the working pressure of the relief valve 610. When the three-position four-way solenoid valve 600 is in the middle position, the oil on both sides of the double-acting oil cylinder 500 is leaking. At this time, the axial position of the test assembly and the force test assembly can be adjusted.

[0028] Figure 1 In the test, the oil inlet temperature, oil inlet pressure, oil inlet flow rate and structural leakage are the working condition parameters of the damping structure. The oil inlet oil circuit of the test component is provided with a flow meter 700, a throttle valve 720, a pressure sensor 710, a temperature sensor 730 and an overflow valve 740. The overflow valve 740 adjusts the oil supply pressure of the oil circuit, and the throttle valve 720 adjusts the oil supply flow rate of the test component. The setting parameters of the overflow valve 740 and the throttle valve 720 are consistent with the pressure and flow rate under the working conditions of the damping structure of the synchronous automatic clutch. The flow meter 700 is used to test the leakage of the oil damping structure, and the temperature sensor 730 is used to test the oil inlet temperature.

[0029] The oil damping test device for synchronous automatic clutch is composed of a bracket, an adapter assembly, a test assembly, a working force test assembly, a drive unit, a test assembly oil supply assembly, and a drive unit oil supply assembly. The bracket is used to integrate and install the entire test device. The entire test device is arranged horizontally, and the drive unit, the adapter assembly, the test assembly, etc. are directly installed on the bracket. The test assembly is used to equivalently simulate the oil damping structure of the synchronous automatic clutch. Different damping structures need to be simulated with different test assemblies. The oil supply method and oil circuit distribution of the test assembly are completely consistent with the oil damping structure of the synchronous automatic clutch. The drive unit adopts a double-acting oil cylinder, and a displacement sensor for measuring the displacement of the oil cylinder is set on the oil cylinder. The drive unit can drive the test assembly to move, and a damping force is generated between the test assembly and the support shaft during the movement. The force test assembly is located between the test assembly and the drive unit. The force test assembly is used to generate the damping force generated when the oil damping structure is working. To ensure the accuracy of the oil damping test, the geometric axis of the test assembly is installed parallel to the direction of cylinder movement, and the thrust point of the cylinder acts on the geometric center of the test assembly. The force test assembly is connected to the cylinder output end through a connecting pin and a spherical bearing to compensate for the deviation between the axis of the test assembly and the direction of cylinder movement caused during processing and assembly, as well as the deviation of the cylinder output point relative to the center position of the test assembly.

[0030] The oil cylinder is connected to a three-position four-way solenoid valve with a central leakage. When the working oil enters the oil cylinder at both working positions, the oil cylinder can be driven to push the test assembly to move in different directions. During the process, the force test assembly measures the magnitude of the damping force, and the displacement sensor measures and outputs the damping stroke of the test assembly. A relief valve is provided on the front oil inlet of the three-position four-way solenoid valve. The output pressure of the oil cylinder is adjusted by setting the working pressure of the relief valve.

[0031] The oil inlet line of the test assembly is equipped with a flow meter, a throttle valve, a pressure sensor, a temperature sensor, and a relief valve. The relief valve adjusts the oil supply pressure of the oil line, and the throttle valve adjusts the oil supply flow of the test assembly. The setting parameters of the relief valve and the throttle valve are consistent with the working conditions of the damping structure of the synchronous automatic clutch. The flow meter is used to measure the leakage of the damping structure, and the temperature sensor is used to measure the oil temperature under the test conditions.

[0032] A synchronous automatic clutch oil damping force test device. It consists of a bracket, an adapter assembly, an oil damping equivalent test assembly, a force test assembly, a drive unit, and a lubrication control oil circuit. The test device is arranged horizontally, and the oil damping equivalent test assembly, the adapter assembly, the force test assembly, and the drive unit are coaxially arranged on the bracket. The drive unit adopts a double-acting cylinder, and a displacement sensor is arranged on the cylinder. The force test assembly is located between the test assembly and the drive unit, and the force test assembly is connected to the output end of the cylinder through a joint bearing to compensate for processing and assembly errors. The cylinder action is controlled by a solenoid valve, and the cylinder output thrust is adjusted by a relief valve. A regulating valve is arranged on the oil inlet circuit of the test assembly to adjust the working environment of the oil damping structure. The output of the force test assembly and the displacement sensor is the test result of the oil damping structure characteristics. The patent of the present invention is suitable for testing the damping force characteristics of the synchronous automatic clutch oil damping structure under different oil pressure, flow rate, and load conditions.

Claims

1. A synchronous automatic clutch oil damping force test device, characterized in that: It includes a bracket, a transfer assembly, an oil damping equivalent test assembly, a force test assembly, a drive unit, and a lubrication control oil circuit; the oil damping equivalent test assembly, the transfer assembly, the force test assembly, and the drive unit are coaxially arranged horizontally on the bracket, the drive unit adopts a double-acting cylinder, a displacement sensor is provided on the cylinder, the force test assembly is located between the test assembly and the drive unit, the force test assembly is connected to the output end of the cylinder through a spherical bearing, the cylinder movement is controlled by a solenoid valve, and the cylinder output thrust is adjusted by a relief valve; The oil damping equivalent test assembly consists of a support shaft, a damping ring, and a sliding ring. The damping ring and the sliding ring are installed on the support shaft through a cylindrical pair with clearance fit. The damping ring and the sliding ring can slide on the support shaft. The area A surrounded by the support shaft, the damping ring, and the sliding ring constitutes a damping oil chamber structure. The damping ring and the sliding ring move axially under the action of external force. The adapter assembly consists of an adapter plate I and an adapter plate II. The adapter plate I is used for the transition connection between the support shaft and the bracket. The adapter plate II is used for the transition connection between the sliding ring and the connecting piece I in the force test assembly. The force test assembly consists of a connecting piece I, a force sensor, a connecting piece II, and a connecting pin. The force test assembly is rigidly connected to the test assembly. The axis of the force test assembly is coaxially arranged with the axis of the test assembly. The force sensor is installed between the connecting piece I and the connecting piece II through a threaded connection. The connecting pin is fixed on the connecting piece II. The drive unit consists of a double-acting cylinder, a spherical bearing, and a displacement sensor. The movement direction of the double-acting cylinder It is arranged parallel to the geometric axis of the test component, and the thrust point of the double-acting cylinder acts on the geometric center of the force test component. The force test component is connected to the output end of the double-acting cylinder and the spherical bearing through a connecting pin. The drive unit can drive the sliding ring to move. The force sensor is used to test the damping force generated between the sliding ring and the support shaft during the movement. The double-acting cylinder is externally connected to a central leakage three-position four-way solenoid valve. A relief valve is provided on the front end oil inlet line of the three-position four-way solenoid valve. The maximum output pressure of the cylinder is controlled by setting the working pressure of the relief valve. A flow meter, a throttle valve, a pressure sensor, a temperature sensor, and a relief valve are provided on the oil inlet line of the test component. The relief valve adjusts the oil supply pressure of the oil circuit, and the throttle valve adjusts the oil supply flow of the test component. The setting parameters of the relief valve and the throttle valve are consistent with the pressure and flow under the working conditions of the damping structure of the synchronous automatic clutch. The flow meter is used to test the leakage of the oil damping structure, and the temperature sensor is used to test the oil inlet temperature.

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