A testing machine and testing method for disc springs in bearings

Abstract

The present invention provides a testing machine for disc springs in bearings, comprising a loading assembly, a support base and a control system; the loading assembly is used to provide an axial force, the support base is used to simulate the working conditions of the bearing to realize the simulation of the overturning moment, and a test area for placing the bearing with a loaded assembly is provided on the support base; the control system is connected to the loading assembly and the support base, and is used to send control parameters to the loading assembly to apply an axial force, send control parameters to the support base to adjust the overturning moment of the bearing, and receive test data from the loading assembly and the support base. The advantage of the present invention is that it can simulate the loading of the overturning moment and the axial force, which is more in line with the actual use conditions of the disc springs in bearings and other equipment subjected to the overturning moment, and intuitively observe the dynamic state of the disc springs in the bearings under the actual working conditions.

Description

Technical Field

[0001] The present invention relates to the field of assembly detection equipment, and particularly relates to a testing machine and a testing method for disc springs in bearings. Background Art

[0002] After production, it is necessary to test the disc spring to detect its ability to withstand loads. Currently, the equipment and methods for detecting disc springs mostly perform simple compression operations on single-group disc springs, and there is no equipment that can perform combined loading of overturning moment and axial force. The detection equipment cannot keep up with the detection requirements of disc springs under more complex working conditions. Since the disc spring is subjected to repeated alternating stresses during use, after a certain number of uses, the disc spring will be damaged or even broken. In order to ensure the reliability of the disc spring during use, it is necessary to conduct load tests and durability tests on the disc spring before use.

[0003] In the prior art, the testing equipment for testing the performance of disc springs uses the forward and reverse rotation of a motor to perform simple compression operations on the disc springs. After reaching the preset number of compression times, the test ends. After the test ends, the fatigue life of the disc spring is judged by observing the deformation amount of the disc spring. If the deformation amount of the disc spring exceeds the allowable range, it means that the fatigue life of the disc spring does not meet the requirements. However, it does not conform to the working conditions of dozens of disc springs subjected to overturning moment and axial force in bearings and other mechanical equipment.

[0004] In summary, there is an urgent need for a disc spring detection equipment that combines actual working conditions to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a testing machine for disc springs in bearings, and the specific technical solutions are as follows:

[0006] A testing machine for disc springs in bearings includes a loading assembly, a support seat, and a control system;

[0007] Further, the loading assembly includes a frame, a pressure source, a pressure rod, and a roller mechanism. The frame is arranged on the support seat; the pressure source is connected to the pressure rod to apply axial pressure; the pressure rod is adjustably arranged in the frame along the axial pressure direction; one end of the pressure rod away from the pressure source is connected to the roller mechanism; the roller mechanism is provided with rollers that roll along the circumferential direction.

[0008] Further, the support seat includes a fixed seat and a bearing seat arranged on the fixed seat and capable of relative rotation. The loading assembly is arranged on the fixed seat; the bearing seat is provided with a test area for placing a bearing with a loaded component.

[0009] Further, the control system is connected to the loading component and the support base, and is configured to send control parameters to the loading component to apply an axial force, send control parameters to the support base to adjust the tipping moment of the bearing, and receive test data from the loading component and the support base.

[0010] Specifically, a plurality of groups of loading components are uniformly arranged along the circumference of the fixed base.

[0011] Specifically, the loaded component includes a disc spring, an upper gasket, and a lower gasket, and the disc spring is disposed between the upper gasket and the lower gasket.

[0012] Specifically, a floating ring is provided between the loading component and the loaded component for equalizing the axial pressure received by the loaded component.

[0013] Specifically, a floating ring retaining edge is further provided on the bearing seat, and the floating ring retaining edge is located on the inner ring of the floating ring and is disposed in contact with the floating ring.

[0014] Specifically, a height sensor for collecting the distance between the pressure rod and the end of the bearing is provided on the loading component, and the height sensor is connected to the control system; a pressure sensor for collecting the value of the axial pressure is provided on the loaded component, and the pressure sensor is connected to the control system.

[0015] Specifically, the control system includes a control center, a relay self-locking circuit, and an electromagnetic overflow valve; the control center is connected to the relay self-locking circuit and is configured to send control parameters to the relay self-locking circuit; the relay self-locking circuit is connected to the electromagnetic overflow valve and is configured to control the electromagnetic overflow valve to send a on-off pulse signal with a specific frequency to the loading component within a delay closing time period, and control the electromagnetic overflow valve to stop working within a preset delay opening time period; the specific frequency is the compression frequency; the electromagnetic overflow valve is connected to the loading component, and the loading component compresses the loaded component back and forth according to the compression frequency.

[0016] Specifically, the control system further includes a signal receiver, the signal receiver is connected to the control center and the electromagnetic overflow valve, and is configured to collect the on-off pulse signal in real time and transmit the on-off pulse signal to the control center, and the control center converts the compression frequency of the on-off pulse signal into the actual number of compressions of the loading component.

[0017] Applying the testing machine for the disc spring in the bearing of the present invention has the following beneficial effects:

[0018] The loading component and the support base in the present invention can load an axial force and a tipping moment on the disc spring, simulate the actual working conditions of the disc spring, detect the comprehensive performance of the disc spring, and can better analyze the stress state of the disc spring under working conditions.

[0019] The floating ring in the present invention can study the clearance between the disc spring and the floating ring in the slewing bearing. Under the condition of overturning moment, the maximum bearing capacity of the disc spring can be reduced by experiments to prevent the floating ring from colliding with the second outer ring surface where the disc spring groove is located due to the overturning moment.

[0020] The loaded component in the present invention is combined and connected through the upper gasket, the lower gasket and the disc spring, and can meet the detection of various different types and specifications of disc springs.

[0021] The present invention can detect multiple groups of disc springs simultaneously, enabling disc springs of different specifications to conduct comparative tests under the same working conditions.

[0022] In addition, the present invention also proposes a disc spring test method, which uses the above-mentioned testing machine for testing. The specific steps are as follows:

[0023] First, the control system sends control parameters to the loading component. The control parameters include the loading amount of the overturning moment, the set number of compression times, the compression frequency, the set closing time, and the set opening time. The loading component applies an axial pressure to the floating ring;

[0024] Then, the control system collects test data from the loading component, the loaded component, and the bearing seat. The test data includes the actual number of compression times, the deformation of the disc spring, and the axial pressure received by the disc spring;

[0025] Finally, the control system controls the loading component to stop applying axial pressure to the floating ring, ending the test.

[0026] Specifically, the specific process for the control system to determine whether to end the test is as follows:

[0027] The control system determines whether the actual number of compression times is greater than or equal to the set number of compression times;

[0028] If the judgment result is yes, the control system controls the loading component to stop applying axial pressure and ends the test;

[0029] If the judgment result is no, the control system further determines whether the deformation of the disc spring is greater than or equal to the preset allowable threshold;

[0030] If the deformation of the disc spring is greater than or equal to the preset allowable threshold, the control system controls the loading component to stop applying axial pressure and ends the test.

[0031] Applying the disc spring test method in the present invention has the following beneficial effects:

[0032] The disc spring test method can monitor the deformation of the disc spring and the actual number of compressions in real time and stop the test when the deformation of the disc spring exceeds the allowable threshold or reaches the designed number of compressions, saving time and effectively improving the test efficiency.

[0033] In addition to the purposes, features and advantages described above, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0035] Figure 1 is a schematic structural diagram of a testing machine for disc springs in a bearing in the present invention;

[0036] Figure 2 is Figure 1 a schematic structural diagram of a support base in;

[0037] Figure 3 is Figure 1 a schematic structural diagram of a loading assembly in (in the test state with a floating ring and a loaded assembly arranged);

[0038] Figure 4 is Figure 3 a schematic structural diagram of a loaded assembly in;

[0039] Figure 5 is Figure 1 a system block diagram of a control system in (including data transfer information).

[0040] Wherein, 1 - loading assembly, 1 - 1 - frame, 1 - 2 - pressure source, 1 - 3 - pressure rod, 1 - 4 roller mechanism, 1 - 5 - height sensor, 2 - floating ring, 3 - loaded assembly, 3 - 1 - disc spring, 3 - 2 - upper gasket, 3 - 3 - lower gasket, 3 - 4 - pressure sensor, 4 - support base, 4 - 1 - fixed seat, 4 - 2 - bearing seat, 4 - 3 - floating ring edge, 5 - control system, 5 - 1 - control center, 5 - 2 relay self - locking circuit, 5 - 3 - electromagnetic overflow valve, 5 - 4 - signal receiver. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] The embodiments of the present invention will be described in detail below with reference to the drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0042] Due to the wide variety of disc springs and diverse operating conditions, existing technical solutions usually use the forward and reverse rotation of a motor to perform simple compression operation detection on disc springs, which does not meet the actual situation under the conditions of some disc spring groups subjected to overturning moments. To solve the above problems, the present invention realizes a testing machine and a testing method for disc springs in bearings. The specific embodiments are as follows:

[0043] Embodiment 1:

[0044] This embodiment realizes a testing machine for disc springs in bearings, including a loading assembly 1, a support seat 4, and a control system 5.

[0045] Furthermore, the loading assembly 1 includes a frame 1-1, a pressure source 1-2, a pressure rod 1-3, a roller mechanism 1-4, and a height sensor 1-5; the frame 1-1 is arranged on the support seat 4; the pressure source 1-2 is connected to the pressure rod 1-3 to apply axial pressure; the pressure rod 1-3 is adjustably arranged in the frame 1-1 along the axial pressure direction; one end of the pressure rod 1-3 away from the pressure source 1-2 is connected to the roller mechanism 1-4; the roller mechanism 1-4 is provided with rollers that roll circumferentially; the height sensor 1 is used to collect the distance between the pressure rod 1-3 and the end of the bearing 4-3, and the height sensor 1-5 is connected to the control system 5, and the control system 5 converts the change in the height sensor reading into the deformation amount of the disc spring.

[0046] Furthermore, the support seat 4 includes a fixed seat 4-1 and a bearing seat 4-2 arranged on the fixed seat 4-1 and capable of relative rotation. The loading assembly 1 is arranged on the fixed seat 4-1; a test area for placing the bearing 4-3 with the loaded assembly 3 is provided on the bearing seat 4-2.

[0047] Furthermore, the control system 5 is connected to the loading assembly 1 and the support seat 4, and is used to send control parameters to the loading assembly 1 to apply axial force, send control parameters to the support seat 4 to adjust the overturning moment of the bearing, and receive test data from the loading assembly 1 and the support seat 4.

[0048] In this embodiment, the preferred bearing seat 4-2 is a slewing bearing seat 4-2, which is used to simulate the rotational movement under the conditions of a slewing bearing. When it is necessary to simulate the conditions of other bearings, it can also be replaced with other bearing seats to simulate the conditions.

[0049] In this embodiment, multiple groups of loading assemblies 1 are preferably arranged evenly along the circumferential direction of the fixed seat 4-1. The multiple groups of loading assemblies 1 can provide greater axial pressure and overturning moment, and can better simulate the actual conditions of the disc springs in the bearing.

[0050] Specifically, the loaded component 3 includes a disc spring 3-1, an upper gasket 3-2, a lower gasket 3-3, and a pressure sensor 3-4. The disc spring 3-1 is arranged between the upper gasket 3-2 and the lower gasket 3-3. In this embodiment, the upper gasket 3-2 and the lower gasket 3-3 can prevent the disc spring 3-1 from rubbing against the inner wall of the groove and affecting the test results.

[0051] Specifically, the pressure sensor 3-4 is used to collect the value of the axial pressure, and the pressure sensor 3-4 is connected to the control system 5.

[0052] Specifically, a floating ring 2 for balancing the axial pressure received by the loaded component 3 is provided between the loading component 1 and the loaded component 3.

[0053] Specifically, a floating ring stop edge 4-4 is further provided on the bearing seat 4-2. The floating ring stop edge is located inside the floating ring 2 and is arranged in contact with the floating ring 2.

[0054] Specifically, the control system 5 includes a control center 5-1, a relay self-locking circuit 5-2, and an electromagnetic overflow valve 5-3. The control center 5-1 is connected to the relay self-locking circuit 5-2 and is used to send control parameters to the relay self-locking circuit 5-2. The relay self-locking circuit 5-2 is connected to the electromagnetic overflow valve 5-3 and is used to control the electromagnetic overflow valve 5-3 to send on-off pulse signals with a specific frequency to the loading component 1 during the delayed closing time period, and to control the electromagnetic overflow valve 5-3 to stop working during the preset delayed opening time period. The specific frequency is the compression frequency. The electromagnetic overflow valve 5-3 is connected to the loading component, and the loading component 1 compresses the loaded component 3 back and forth according to the compression frequency.

[0055] Specifically, the control system 5 further includes a signal receiver 5-4. The signal receiver 5-4 is connected to the control center 5-1 and the electromagnetic overflow valve 5-3 and is used to collect the on-off pulse signals in real time and transmit the on-off pulse signals to the control center 5-1. The control center 5-1 converts the compression frequency of the on-off pulse signals into the actual compression times of the loading component 1.

[0056] This embodiment realizes a testing machine for disc springs in bearings. The testing machine can detect multiple groups of disc springs simultaneously, enabling disc springs of different specifications to be subjected to a comparative test under the same working conditions. In this embodiment, the loading component 1 and the support seat 4 can apply an axial force and an overturning moment to the disc spring 3-1, simulate the actual working conditions of the disc spring 3-1, detect the comprehensive performance of the disc spring 3-1, and better analyze the stress state of the disc spring 3-1 under working conditions. The floating ring 2 in this embodiment can study the clearance between the disc spring 3-1 in the bearing and the floating ring 2. Under the condition of the overturning moment, the maximum bearing capacity of the disc spring 3-1 can be determined through the test, and the collision between the floating ring 2 and the surface of the second outer ring of the bearing where the groove for setting the disc spring 3-1 is located due to the overturning moment can be reduced. The loaded component 3 in this embodiment is combined and connected through the disc spring 3-1, the upper gasket 3-2, and the lower gasket 3-3, and can meet the detection of various types and specifications of disc springs.

[0057] Embodiment 2

[0058] This embodiment realizes a method for testing disc springs, which is characterized in that the testing machine described in Embodiment 1 is used for the test, and the specific steps are as follows:

[0059] First, the control system 5 sends control parameters to the loading component 1. The control parameters include the loading amount of the overturning moment, the set number of compressions, the compression frequency, the set closing time, and the set opening time. The loading component 1 applies an axial pressure to the floating ring 2.

[0060] Then, the control system 5 collects the test data from the loading component 1, the loaded component 3, and the bearing seat 4-2. The test data includes the actual number of compressions, the deformation of the disc spring, and the axial pressure applied to the disc spring.

[0061] Finally, the control system 5 controls the loading component 1 to stop applying axial pressure to the floating ring 2, and the test ends.

[0062] Specifically, the specific process for the control system to determine whether to end the test is as follows:

[0063] The control system 5 determines whether the actual number of compressions is greater than or equal to the set number of compressions.

[0064] If the judgment result is yes, the control system 5 controls the loading component 1 to stop applying axial pressure, and the test ends.

[0065] If the judgment result is no, the control system 5 further determines whether the deformation of the disc spring is greater than or equal to the preset allowable threshold.

[0066] When the deformation amount of the disc spring is greater than or equal to a preset allowable threshold, the control system 5 controls the loading component 1 to stop applying axial pressure and ends the test.

[0067] This embodiment realizes a disc spring test method. The disc spring test method can monitor the deformation amount of the disc spring and the actual number of compressions in real time and stop the test when the deformation amount of the disc spring exceeds the allowable threshold or reaches the designed number of compressions, saving time and effectively improving the test efficiency.

[0068] The foregoing is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A testing machine for disc springs in bearings, characterized in that, It includes a loading component (1), a support base (4), and a control system (5); The loading component (1) includes a frame (1-1), a pressure source (1-2), a pressure rod (1-3), and a roller mechanism (1-4). The frame (1-1) is arranged on the support base (4); the pressure source (1-2) is connected to the pressure rod (1-3) to apply an axial pressure; the pressure rod (1-3) is adjustably arranged in the frame (1-1) along the axial pressure direction; one end of the pressure rod (1-3) away from the pressure source (1-2) is connected to the roller mechanism (1-4); the roller mechanism (1-4) is provided with rollers that roll circumferentially; The support base (4) includes a fixed base (4-1) and a bearing seat (4-2) arranged on the fixed base (4-1) and capable of relative rotation. The loading component (1) is arranged on the fixed base (4-1); the bearing seat (4-2) is provided with a test area for placing a bearing (4-3) with a loaded component (3); The control system (5) is connected to the loading component (1) and the support base (4), and is used to send control parameters to the loading component (1) to apply an axial force, send control parameters to the support base (4) to adjust the overturning moment of the bearing, and receive test data from the loading component (1) and the support base (4); A floating ring (2) for balancing the axial pressure received by the loaded component (3) is arranged between the loading component (1) and the loaded component (3).

2. The testing machine for the disc spring in the bearing according to claim 1, characterized in that Multiple groups of loading components (1) are uniformly arranged along the circumferential direction of the fixed base (4-1).

3. The testing machine for the disc spring in the bearing according to claim 1, characterized in that, The loaded component (3) includes a disc spring (3-1), an upper gasket (3-2), and a lower gasket (3-3). The disc spring (3-1) is arranged between the upper gasket (3-2) and the lower gasket (3-3).

4. The testing machine for disc springs used in bearings according to claim 1, characterized in that, The bearing seat (4-2) is also provided with a floating ring edge (4-4). The floating ring edge is located in the inner ring of the floating ring (2) and is arranged in contact with the floating ring (2).

5. The testing machine for the disc spring in the bearing according to claim 1, characterized in that, The loading component (1) is provided with a height sensor (1-5) for collecting the distance between the pressure rod (1-3) and the end of the bearing (4-3). The height sensor (1-5) is connected to the control system (5); the loaded component (3) is provided with a pressure sensor (3-4) for collecting the value of the axial pressure. The pressure sensor (3-4) is connected to the control system (5).

6. The testing machine for disc springs used in bearings according to claim 1, characterized in that, The control system (5) includes a control center (5-1), a relay self-locking circuit (5-2), and an electromagnetic overflow valve (5-3); the control center (5-1) is connected to the relay self-locking circuit (5-2) and is used to send control parameters to the relay self-locking circuit (5-2); the relay self-locking circuit (5-2) is connected to the electromagnetic overflow valve (5-3) and is used to control the electromagnetic overflow valve (5-3) to send on-off pulse signals with a specific frequency to the loading component (1) during a delayed closing period, and to control the electromagnetic overflow valve (5-3) to stop working during a preset delayed opening period; the specific frequency is the compression frequency; the electromagnetic overflow valve (5-3) is connected to the loading component, and the loading component (1) compresses the loaded component (3) back and forth according to the compression frequency.

7. The testing machine for disc springs in bearings according to claim 6, characterized in that, The control system (5) further includes a signal receiver (5-4), the signal receiver (5-4) is connected to the control center (5-1) and the electromagnetic overflow valve (5-3), and is used to collect the on-off pulse signals in real time and transmit the on-off pulse signals to the control center (5-1), and the control center (5-1) converts the compression frequency of the on-off pulse signals into the actual compression times of the loading component (1).

8. A method for testing disc springs, characterized in that, Using the testing machine according to any one of claims 1-7 for testing, the specific steps are as follows: First, the control system (5) sends control parameters to the loading component (1), the control parameters include the overturning moment loading amount, the set compression times, the compression frequency, the set closing time, and the set opening time, and the loading component (1) applies an axial pressure to the floating ring (2). Then, the control system (5) collects test data from the loading component (1), the loaded component (3), and the bearing seat (4-2), and the test data includes the actual compression times, the deformation amount of the disc spring, and the axial pressure received by the disc spring. Finally, the control system (5) controls the loading component (1) to stop applying the axial pressure to the floating ring (2), and ends the test.

9. The disc spring test method according to claim 8, characterized in that, The specific process for the control system to judge whether to end the test is as follows: The control system (5) judges whether the actual compression times are greater than or equal to the set compression times. If the judgment result is yes, the control system (5) controls the loading component (1) to stop applying the axial pressure and ends the test. If the judgment result is no, the control system (5) further judges whether the deformation amount of the disc spring is greater than or equal to a preset allowable threshold. If the deformation amount of the disc spring is greater than or equal to the preset allowable threshold, the control system (5) controls the loading component (1) to stop applying the axial pressure and ends the test.

Images