Mounting seat, test system and test method

Abstract

The invention relates to the technical field of speed reducer testing, in particular to a mounting seat, a testing system and a testing method. A mounting seat comprises a body provided with an accommodating cavity; and the vibration reduction assembly is arranged in the containing cavity, the vibration reduction assembly is connected with the body, and the vibration reduction assembly is used for changing the mass of the body so as to change the inherent frequency of the body. The invention provides a mounting seat, a test system and a test method, and aims to solve the problems that the existing mounting seat cannot change the self mass, the inherent frequency cannot be adjusted, the risk that the inherent frequency and the working frequency coincide in a working state exists, and then resonance is generated.

Description

Technical Field

[0001] The present invention relates to the technical field of reducer testing, and in particular to a mounting seat, a testing system and a testing method. Background Art

[0002] High-speed torque meters are used to measure speed and torque at the input of the main reducer. These long-shafted structures often require critical speeds during testing. Because the stiffness of the mounting platform cannot be accurately determined, errors often occur when calculating the system's critical speed. Occasionally, the critical speed coincides with the operating speed, causing system resonance. To eliminate this resonance, adjustments to mass and stiffness are often necessary.

[0003] It is difficult to change the mass and stiffness of the existing mount. The mass is unique and the natural frequency cannot be adjusted. There is a risk that the natural frequency of the mount in the working state will coincide with the operating frequency of the high-speed torque meter, thereby causing resonance. Summary of the Invention

[0004] In view of this, the present invention provides a mounting base, a test system and a test method to solve the problem that the existing mounting base cannot change its own mass and the natural frequency cannot be adjusted. There is a risk that the natural frequency of the mounting base in the working state and the operating frequency of the high-speed torque meter will coincide with each other, thereby causing resonance.

[0005] In a first aspect, the present invention provides a mounting base, comprising:

[0006] A body, the body being provided with a receiving cavity and being suitable for connecting to a high-speed torque meter;

[0007] A vibration damping component is arranged in the accommodating cavity and connected to the body. The vibration damping component changes the mass of the body and thus changes the natural frequency of the body.

[0008] During testing, the vibration damping assembly is placed in the chamber and connected to the main body, aligning the main body's natural frequency with the operating frequency. This shift in the main body's natural frequency prevents resonance caused by its own frequency matching the high-speed torque meter's operating frequency, ensuring smooth testing. This eliminates the need to replace or re-manufacture the mounting base, allowing it to adapt to different test objects, reducing operating costs.

[0009] In an optional embodiment, the vibration damping assembly includes at least two filling bodies and mass blocks with different densities, and the filling bodies with different densities are combined with the mass blocks to form vibration damping assemblies with different masses.

[0010] In an optional embodiment, the accommodating cavity is provided with an opening, and the vibration damping assembly includes a sealing plate, which is connected to the body via a fastener, and the sealing plate is used to close the opening.

[0011] In an optional embodiment, the number of the accommodating cavity is at least one, the number of the vibration damping assembly is at least one, and one vibration damping assembly is correspondingly provided for one accommodating cavity.

[0012] In an optional embodiment, the filling body is liquid or solid.

[0013] In an optional embodiment, the body includes a support portion, the support portion is located above the body, and the support portion is suitable for supporting the torque meter.

[0014] In an optional embodiment, the main body further includes a mounting portion, the mounting portion is located below the main body, and the mounting portion is suitable for being detachably connected to the base.

[0015] In a second aspect, the present invention further provides a test system comprising the above-mentioned mounting base.

[0016] In an optional embodiment, the device further comprises a torque meter and a base, wherein the base is located below the body and the torque meter is located above the body.

[0017] In a third aspect, the present invention further provides a test method for a mounting seat. Under the test state, the vibration reduction assembly is placed in the accommodating cavity and connected to the body so that the natural frequency of the body is not equal to the operating frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Schematic diagram of the connection between a mounting base and a torque meter according to an embodiment of the present invention.

[0020] Explanation of the reference numerals: 1. Main body; 101. Support portion; 102. Mounting portion; 2. Vibration reduction assembly; 201. Filling body; 202. Mass block; 203. Sealing plate; 3. Torque meter. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0022] The following combination Figure 1 , describing embodiments of the present invention.

[0023] According to an embodiment of the present invention, on the one hand, a mounting seat is provided, including: a main body 1, the main body 1 is provided with a accommodating cavity; a vibration damping assembly 2, the vibration damping assembly 2 is provided in the accommodating cavity, the vibration damping assembly 2 is connected to the main body 1, and the vibration damping assembly 2 changes the mass of the main body 1, thereby changing the natural frequency of the main body 1.

[0024] During testing, the vibration damping assembly 2 is placed in the chamber and connected to the main body 1, so that the natural frequency of the main body 1 is different from the operating frequency. By changing the natural frequency of the main body 1, resonance caused by the natural frequency and the operating frequency being equal is avoided, ensuring smooth testing. This eliminates the need to replace or re-manufacture the mounting base, allowing it to adapt to different test objects, reducing operating costs.

[0025] In one embodiment, Figure 1 As shown, the vibration damping assembly 2 includes at least two fillers 201 of different densities and a mass block 202. The fillers 201 of different densities are combined with the mass block 202 to form vibration damping assemblies 2 of varying masses. By placing vibration damping assemblies 2 of varying masses within the accommodating cavity, the overall mass of the body 1 is altered, further changing the natural frequency of the body 1. It should be noted that when the mass of the vibration damping assembly 2 is the first mass, it is obtained by combining the fillers 201 of the first density with the mass block 202; when the mass of the vibration damping assembly 2 is the second mass, it is obtained by combining the fillers 201 of the second density with the mass block 202; and so on.

[0026] In one embodiment, Figure 1 As shown, the accommodating cavity is provided with an opening, and the vibration reduction assembly 2 includes a sealing plate 203, which is connected to the body 1 through a fastener. The sealing plate 203 is used to close the opening, and the accommodating cavity is closed by the sealing plate 203, so that the accommodating cavity forms a closed space. Specifically, the fastener is a bolt. Figure 1 As shown, the sealing plate 203 is connected to the mounting seat by fasteners, thereby achieving a fixed connection between the sealing plate 203 and the body 1, preventing the filler 201 and the mass block 202 from being exposed outside the body 1. It should be noted that the opening of this embodiment is provided at the bottom of the accommodating cavity, so that the tester can easily insert the vibration damping assembly 2 through the bottom.

[0027] In one embodiment, Figure 1 As shown, the number of the accommodating cavity is at least one, the number of the vibration damping assembly 2 is at least one, and one accommodating cavity is correspondingly provided with one vibration damping assembly 2. In this embodiment, as shown in FIG. Figure 1 As shown, there are two accommodating cavities, and a vibration reduction assembly 2 is provided in one accommodating cavity to change the overall mass of the body 1.

[0028] In one embodiment, Figure 1 As shown, the filling body 201 is solid, and the filling body 201 can be made of different materials according to requirements, and different materials have different densities to meet the use requirements of the body 1. In addition, the filling body 201 in this embodiment does not need to fill the entire receiving cavity, and can only fill a part of the receiving cavity according to use requirements.

[0029] In one embodiment, Figure 1 As shown, the body 1 includes a support portion 101, which is located above the body 1 and is suitable for supporting the torque meter 3. The support portion 101 supports the torque meter 3 so that the torque meter 3 can measure the speed and torque of the input end of the final reducer.

[0030] In one embodiment, Figure 1 As shown, the body 1 further includes a mounting portion 102, which is located below the body 1 and adapted to be detachably connected to the base. By providing the mounting portion 102, a detachable connection with the base is achieved through a positioning pin.

[0031] According to another aspect of an embodiment of the present invention, a test system is provided, comprising the above-mentioned mounting base.

[0032] In one embodiment, Figure 1 As shown, it also includes a torque meter 3 and a base. The base is located below the body 1, and the torque meter 3 is located above the body 1. The base supports the body 1, and the body 1 supports the torque meter 3.

[0033] A mounting base testing method, based on design requirements, first places a mass block 202 and a filler body 201 within the filling cavity, then seals the opening with a sealing plate 203. Vibration reduction assembly 2 is used to change and control the overall mass of body 1, thereby altering the natural frequency of body 1 itself, preventing resonance between the natural frequency of body 1 and the operating frequency under test, thereby achieving a vibration reduction effect. It should be noted that the weight reduction assembly provided in this embodiment can change the density and overall mass of filler body 201 by varying its material and volume, thereby varying the overall weight of vibration reduction assembly 2.

[0034] For example, a high-speed torque meter model had a target speed of 20,900 rpm and a target frequency of 348 Hz. During speed tuning, personnel discovered that the test system was experiencing resonance at 340 Hz. Because this frequency was close to the high-speed torque meter's rotational frequency, the test system frequency needed to be adjusted. By installing a vibration reduction component within the mounting base, the mass of the entire test system was altered, increasing damping and lowering the natural frequency to 290 Hz, avoiding the high-speed torque meter's target frequency and facilitating subsequent testing.

[0035] The mounting seat provided by the present invention has the following advantages: (1) by providing a vibration reduction component 2, the natural frequency of the body 1 is changed to avoid resonance between the natural frequency of the body 1 and the operating frequency in the test state, thereby playing a vibration reduction role; (2) by providing a filling body 201 of different materials (different densities) and different volumes, the operating frequency of the body 1 and the vibration reduction component 2 can be changed multiple times; (3) according to the definition of the natural frequency of the undamped system: (w n (k represents the natural frequency, k represents the system stiffness, and m represents the system mass), and the natural frequency of the system is changed by changing the mass m, thereby avoiding the system resonance at the working speed; (4) the opening is closed by setting a sealing plate 203, and the sealing plate 203 is fixedly connected to the main body 1 by fasteners, so that the vibration reduction component 2 and the main body 1 together form a mounting seat, and the vibration reduction component 2 and the main body 1 are detachably connected, so that the mass of the mounting seat can be adjusted at any time, the method of changing the mass is simple, the debugging time of the equipment is reduced, and the convenience of disassembly and assembly is improved.

[0036] As an alternative embodiment, the filling body 201 may also be in liquid form, and the filling body 201 may be made of different liquids according to requirements. Different liquids have different densities to meet the use requirements of the main body 1.

[0037] As an alternative embodiment, the opening is provided on the side of the accommodating cavity, and the tester places the vibration damping assembly 2 from the side.

[0038] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A mounting seat, characterized in that: include: A body (1), wherein the body (1) is provided with a receiving cavity, and the body (1) is suitable for connecting to a high-speed torque meter; A vibration damping component (2) is provided in the accommodating cavity, the vibration damping component (2) is connected to the body (1), and the vibration damping component (2) changes the mass of the body (1) and thereby changes the natural frequency of the body (1).

2. The mounting seat according to claim 1, wherein: The vibration damping assembly (2) comprises at least two filling bodies (201) of different densities and a mass block (202); the filling bodies (201) of different densities are combined with the mass block (202) to form vibration damping assemblies (2) of different masses.

3. The mounting seat according to claim 2, wherein: The accommodating cavity is provided with an opening, and the vibration reduction assembly (2) comprises a sealing plate (203). The sealing plate (203) is connected to the body (1) via a fastener, and the sealing plate (203) is used to close the opening.

4. The mounting seat according to claim 1, wherein: The number of the accommodating cavities is at least one, the number of the vibration damping components (2) is at least one, and one vibration damping component (2) is correspondingly provided to one accommodating cavity.

5. The mounting seat according to claim 2, wherein: The filling body (201) is in liquid or solid state.

6. The mounting seat according to claim 1, wherein: The body (1) comprises a support portion (101), the support portion (101) is located above the body (1), and the support portion (101) is suitable for supporting the torque meter (3).

7. The mounting seat according to claim 6, wherein: The body (1) further comprises a mounting portion (102), wherein the mounting portion (102) is located below the body (1), and the mounting portion (102) is suitable for being detachably connected to the base.

8. A test system, characterized in that: Comprising the mounting seat according to any one of claims 1-7.

9. The test system according to claim 8, characterized in that: It also includes a torque meter (3) and a base, wherein the base is located below the body (1) and the torque meter (3) is located above the body (1).

10. A mounting seat testing method, for using the mounting seat according to claim 1, characterized in that: In a test state, the vibration reduction component (2) is placed in the accommodating cavity and connected to the body (1), so that the natural frequency of the body (1) is not equal to the operating frequency of the high-speed torque meter.

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