Motor vibration testing tool and method

Abstract

The invention discloses a motor vibration test tool and a method thereof. The lower support table of the test tool is arranged in an upper support table, and the upper support table and the lower support table have a gap in the vertical direction, a fixing plate is arranged in the gap, a through hole is arranged on the desktop of the upper support table and the desktop of the lower support table, the area of ​​the fixing plate is larger than the area of ​​the through hole, a vibration sensor is connected to the lower end of the fixing plate through the through hole of the lower support table, an electromagnet is connected to the upper end of the fixing plate through the through hole of the upper support table, an adsorption piece is coated on the outside of the electromagnet, and a soft pad is arranged on the upper support table; the method comprises: S1, placing a motor to be tested on the soft pad; S2, energizing the electromagnet, the electromagnet moves upward due to adsorption of a motor housing, and at this time the adsorption piece is wrapped around the motor; S3, the vibration sensor tests the vibration of the motor; S4, after the test is completed, the power is turned off; the invention provides a motor vibration test tool and a method thereof which are convenient and fast and can improve efficiency and data accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to a motor vibration testing tool and a method thereof. Background Art

[0002] In research and development, testing, quality inspection and other occasions, a large number of motors need to be subjected to vibration testing. Vibration will accelerate the wear of motor bearings, greatly shorten the normal service life of bearings, and make a lot of noise during operation. At the same time, motor vibration will reduce the insulation of windings. The vibration test of the motor can effectively check the current working state of the motor and evaluate the working performance of the motor. The existing technology mainly adopts manual fixing of vibration sensors and motors, and placing the motors on hard tooling. The existing technology methods have problems such as low efficiency and interference of vibration data.

[0003] The Chinese patent with the publication number CN208984313U, a motor vibration test tool, discloses a motor vibration test tool, including a base, the vibration test tool also includes: a vibration acceleration sensor and a clamping cylinder, the clamping cylinder is fixedly arranged on the surface of the base, a test platform is arranged on one side of the clamping cylinder, the vibration acceleration sensor is fixed on the clamping cylinder through a horizontally arranged bracket, and the clamping cylinder moves up and down to make the vibration acceleration sensor contact with the surface of the motor to be tested; the surface of the test platform is provided with two groups of fixed brackets for fixing the cylindrical motor to be tested, the fixed brackets are arranged in parallel at the left and right ends of the test platform, the fixed brackets fix the motor to be tested through the support columns 1 arranged at both ends, and the fixed brackets and the support columns 1 are both made of polyurethane. The utility model adopts vibration isolation technology to reduce the transmission of vibration, and adopts the support column 1 of damping material to weaken the physical vibration intensity, and consumes the external vibration energy in buffering. However, the test tool still has the problems of inconvenient use and low effectiveness.

[0004] In summary, the prior art still lacks a motor vibration testing tool and method that is convenient and fast and can improve efficiency and data accuracy. Summary of the invention

[0005] The present invention provides a motor vibration testing tool and method which is convenient and quick and can improve efficiency and data accuracy.

[0006] To achieve this object, the present invention provides the following technical solutions:

[0007] One aspect of the present invention provides a motor vibration testing tool, including an adsorbent, an electromagnet, a fixing plate, a vibration sensor, a soft pad, an upper support table and a lower support table, wherein the lower support table is arranged in the upper support table, and the upper support table and the lower support table have a gap in the vertical direction, the fixing plate is arranged in the gap, the desktop panel of the upper support table and the desktop panel of the lower support table are both provided with through holes, the area of ​​the fixing plate is larger than the area of ​​the through hole, the vibration sensor passing through the through hole of the lower support table and the electromagnet passing through the through hole of the upper support table are connected at the gap in the vertical direction between the upper support table and the lower support table, the fixing plate is sleeved at the connection between the vibration sensor and the electromagnet, the adsorbent is coated on the outside of the electromagnet, and the soft pad is arranged on the upper support table.

[0008] In the present invention, the upper support table and the lower support table can be any table shape in the prior art, generally including but not limited to left and right support plates and the upper desktop plate, and may also include other common table stabilizing support structures such as diagonal braces.

[0009] Preferably, the left support plate and the right support plate of the upper support table are divided into two pieces, and the dividing plates are provided with long strip through holes, and the dividing plates are connected through the long strip through holes.

[0010] Preferably, the motor vibration test fixture of the present invention further includes a connecting bolt and a connecting nut, wherein the connecting bolt passes through the through holes of the two partition plates of the left support plate / right support plate, and the nut is fixed on the connecting bolt.

[0011] Preferably, the motor vibration testing tool of the present invention further comprises a mounting table, and the upper supporting table and the lower supporting table are both fixed on the mounting table.

[0012] Preferably, an air layer is provided inside the soft pad, and the air layer can effectively further isolate the interference of external vibration on the test.

[0013] Preferably, the material of the soft pad is melamine or soft rubber.

[0014] Preferably, the upper surface of the adsorption member is arc-shaped. The arc-shaped upper surface of the adsorption member can better fit the motor, thereby ensuring the stability of the detection data.

[0015] Preferably, the table tops of the upper supporting table and the lower supporting table are both provided with a damping material layer.

[0016] Preferably, the vibration sensor is a uniaxial vibration sensor, a biaxial vibration sensor or a triaxial vibration sensor.

[0017] Preferably, the electromagnet is connected to the vibration sensor via threads.

[0018] Preferably, the adsorbent and the soft pad are both detachably connected, and the shapes and sizes of the adsorbent and the soft pad can be adjusted according to the size of the motor, thereby ensuring the accuracy of the measurement.

[0019] Preferably, the present invention further comprises an early warning system, and when the test tooling encounters hard contact, the early warning system sends out an alarm signal.

[0020] A second aspect of the present invention provides a method for a motor vibration test fixture, comprising the following steps:

[0021] S1. Place the motor to be tested on a soft pad;

[0022] S2, the electromagnet is energized, and the electromagnet moves upward due to the adsorption of the motor housing. After moving upward to the right position, the fixing plate is located between the upper support table and the lower support table and does not contact the upper support table and the lower support table, and at this time the adsorption piece is wrapped around the motor;

[0023] S3, the vibration of the motor is transmitted to the vibration sensor, and the vibration sensor tests the vibration of the motor;

[0024] S4. After the test is completed, turn off the power supply, the electromagnet is powered off, the electromagnet is separated from the motor, and the electromagnet moves downward due to gravity until the fixing plate contacts the lower support table.

[0025] Preferably, the method further includes the following steps: adjusting the installation positions of the two partition plates of the left support plate / right support plate of the upper support table to adjust the height of the upper support table to accommodate the measurement of motors of different sizes.

[0026] In summary, the present invention realizes that the vibration sensor is combined with the motor during testing and the vibration sensor is disconnected from the motor during non-testing by energizing and deenergizing the electromagnet. The motor vibration test can be quickly realized through simple principles and methods. In addition, the motor vibration test fixture provided by the present invention has a stable structure and can ensure the accuracy of the test results.

[0027] Compared with the prior art, the beneficial effects and significant progress of the present invention are: the motor vibration testing tooling and method provided by the present invention can realize the automatic combination of the vibration sensor and the motor, while avoiding hard connection to more accurately collect vibration data. The product is convenient and fast during use, and can improve efficiency and data accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention.

[0029] Obviously, the drawings described below are only drawings of some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work, but these other drawings also belong to the drawings required for use in the embodiments of the present invention.

[0030] Figure 1 A schematic diagram of a partial structure of a motor vibration test tool according to an embodiment of the present invention;

[0031] Figure 2 An exploded view of an upper support table and a lower support table of a motor vibration test tooling according to an embodiment of the present invention;

[0032] Figure 3 A diagram showing the use status of a motor vibration test tool according to an embodiment of the present invention;

[0033] Figure 4 A static state diagram of a motor vibration test tooling according to an embodiment of the present invention;

[0034] In the figure, 1. adsorption part, 2. electromagnet, 3. fixing plate, 4. vibration sensor, 5. soft pad, 6. upper support table, 7. partition plate, 8. lower support table, 9. motor. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution, beneficial effects and significant improvements of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings provided in the embodiments of the present invention.

[0036] Obviously, all the described embodiments are only partial embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

[0037] It should be noted that the terms "first", "second" and "third" (if any) in the specification and claims of the present invention and the drawings of the embodiments of the present invention are only used to distinguish different objects, rather than to describe a specific order. In addition, the term "comprising" and any variation thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0038] What needs to be understood is:

[0039] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "install", "connect", "fix" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a movable connection, or an integrated connection; it can be a direct connection, an indirect connection through an intermediate medium, an invisible signal connection, or even an optical connection; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly limited.

[0040] For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] It should also be noted that the following specific embodiments may be combined with each other, and the same or similar concepts or processes therein may not be described in detail in some embodiments.

[0042] The technical solution of the present invention is described in detail below with specific embodiments.

[0043] Example 1

[0044] like Figure 1-2 As shown, a motor vibration test tool is shown, including an adsorbent 1, an electromagnet 2, a fixing plate 3, a vibration sensor 4, a soft pad 5, an upper support table 6, a partition plate 7, and a lower support table 8. The lower support table 8 is arranged in the upper support table 6, and the upper support table 6 and the lower support table 8 have a gap in the vertical direction. The fixing plate 3 is arranged in the gap. The desktop board of the upper support table 6 and the desktop board of the lower support table 8 are both provided with through holes. The area of ​​the fixing plate 3 is larger than the area of ​​the through hole, so that the fixing plate 3 can be limited in the gap between the upper support table 6 and the lower support table 8 in the vertical direction. The vibration sensor 4 passing through the through hole of the lower support table 8 and the electromagnet 2 passing through the through hole of the upper support table 6 are threadedly connected at the gap between the upper support table 6 and the lower support table 8 in the vertical direction, and the fixing plate 3 is sleeved at the connection between the vibration sensor 4 and the electromagnet 2. The adsorbent 1 is coated on the outside of the electromagnet 2, and the soft pad 5 is arranged on the upper support table 6. The left support plate and the right support plate of the upper support table 6 are divided into two pieces, and the partition plate 7 is provided with a long strip through hole, and the partition plate 7 is connected through the long strip through hole. The connecting bolt passes through the through hole of the two partition plates of the left support plate / right support plate, and the nut is fixed on the connecting bolt. Since the through hole is long and strip-shaped, the height of the upper support table 6 can be changed according to the position of the fixing bolt. The upper surface of the adsorbent 1 is arc-shaped, and the upper surface of the adsorbent 1 is arc-shaped, which can better fit the motor, thereby ensuring the stability of the detection data.

[0045] In this embodiment, the upper support table and the lower support table can be any table shape in the prior art, generally including left and right support plates and an upper desktop plate, and may also include other common table stabilizing support structures such as diagonal braces.

[0046] In this embodiment, the motor vibration test tool of the present invention further includes a mounting table, and the upper support table and the lower support table are both fixed on the mounting table. The mounting table increases the stability of the test tool.

[0047] In this embodiment, an air layer is provided inside the soft pad, which can effectively further isolate the interference of external vibration on the test.

[0048] In this embodiment, the material of the soft pad is melamine and soft rubber.

[0049] In this embodiment, the table tops of the upper supporting table and the lower supporting table are both provided with a damping material layer.

[0050] In this embodiment, the vibration sensor is a uniaxial vibration sensor.

[0051] In this embodiment, the adsorption member and the soft pad are both detachably connected, and the shapes and sizes of the adsorption member and the soft pad can be adjusted according to the size of the motor, thereby ensuring the accuracy of the measurement.

[0052] In this embodiment, an early warning system is also included, and when the test tooling encounters hard contact, the early warning system sends out an alarm signal.

[0053] In this embodiment, the upper support table and the lower support table are both made of metal.

[0054] Example 2

[0055] like Figure 3 As shown, a diagram of the use status of a motor vibration test fixture is shown, and the use status of the motor vibration test fixture can be briefly summarized as follows: the motor to be tested is placed on a soft pad; the electromagnet is energized, and the electromagnet moves upward due to the adsorption of the motor housing. After moving up to the right position, the fixing plate is located between the upper support table and the lower support table and does not contact the upper and lower support tables, and at this time the adsorption piece is wrapped around the motor; the vibration of the motor is transmitted to the vibration sensor, and the vibration sensor tests the vibration of the motor.

[0056] In this embodiment, the size of the motor can be measured before testing, and the adsorbent and soft pad can be replaced with those of appropriate shape and size.

[0057] In this embodiment, the size of the motor can be measured before testing, and the height of the upper support table can be adjusted according to the size of the motor, so that during the test, the adsorbent is wrapped around the motor, and the fixing plate is located between the upper support table and the lower support table and does not contact the upper and lower support tables. The fixing plate does not contact the upper and lower support tables, which can prevent the motor vibration from being transmitted to the upper and lower support tables, thereby affecting the measurement results.

[0058] In this embodiment, when performing a vibration test, the vibration test component can automatically absorb the motor, and there is no hard connection during the test, so the motor vibration can be detected quickly and accurately. However, when the vibration test component has hard contact, a contact alarm signal will be triggered, and the electromagnet will fall and re-absorb to ensure that the tooling is in a normal connection state when the vibration signal is collected.

[0059] Example 3

[0060] like Figure 4 As shown, a static state diagram of a motor vibration test fixture is shown. The static state of the motor vibration test fixture can be briefly summarized as follows: after the test is completed, the power is turned off, the electromagnet is powered off, the electromagnet is separated from the motor, and the electromagnet moves downward due to gravity until the fixed plate abuts against the lower support table.

[0061] In summary, when the motor vibration test fixture is in a static state, the fixing plate abuts against the lower support table, and the adsorption part, the electromagnet, the fixing plate, and the vibration sensor are in a suspended state.

[0062] In the description of the above manual:

[0063] The descriptions of the terms "this embodiment", "an embodiment of the present invention", "as shown in...", "further", "a further improved technical sub-scheme", etc., mean that the specific features, structures, materials or characteristics described in the embodiment or example are included in at least one embodiment or example of the present invention; in this specification, the schematic expressions of the above terms are not necessarily for the same embodiment or example, and the specific features, structures, materials or characteristics described may be combined or combined in a suitable manner in any one or more embodiments or examples; in addition, a person of ordinary skill in the art may combine or combine the different embodiments or examples and the features of the different embodiments or examples described in this specification without causing any contradiction.

[0064] Finally, it should be noted that:

[0065] The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them.

[0066] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. The non-essential improvements, adjustments or replacements made by those skilled in the art based on the contents of this specification are all within the scope of protection required by the present invention.

Claims

1. A motor vibration test tool, characterized in that: The invention comprises an adsorption member, an electromagnet, a fixing plate, a vibration sensor, a soft pad, an upper supporting table and a lower supporting table, wherein the lower supporting table is arranged inside the upper supporting table, and the upper supporting table and the lower supporting table have a gap in a vertical direction, the fixing plate is arranged in the gap, the desktop panel of the upper supporting table and the desktop panel of the lower supporting table are both provided with through holes, the area of ​​the fixing plate is larger than the area of ​​the through holes, the vibration sensor passing through the through holes of the lower supporting table and the electromagnet passing through the through holes of the upper supporting table are connected at the gap in a vertical direction between the upper supporting table and the lower supporting table, the fixing plate is sleeved at the connection between the vibration sensor and the electromagnet, the adsorption member is coated on the outside of the electromagnet, and the soft pad is arranged on the upper supporting table; the power-on and power-off of the electromagnet realize that the vibration sensor is combined with the motor during testing; when not testing, the vibration sensor is disconnected from the motor; the upper surface of the adsorption member is arc-shaped.

2. A motor vibration test tool as claimed in claim 1, characterized in that: The left support plate and the right support plate of the upper support table are both divided into two pieces, and the dividing plates are both provided with long strip through holes, and the dividing plates are connected through the long strip through holes.

3. A motor vibration test tool as claimed in claim 2, characterized in that: It also includes connecting bolts and connecting nuts. The connecting bolts pass through the through holes of the two dividing plates of the left supporting plate / the right supporting plate, and the nuts are fixed on the connecting bolts.

4. A motor vibration test tool as claimed in claim 1, characterized in that: It also includes a mounting table, and the upper supporting table and the lower supporting table are both fixed on the mounting table.

5. A motor vibration test tool as claimed in claim 1, characterized in that: An air layer is arranged inside the soft pad.

6. A motor vibration test tool as claimed in claim 1, characterized in that: The material of the soft pad is melamine and soft rubber.

7. A motor vibration test tool as claimed in claim 1, characterized in that: The table tops of the upper supporting table and the lower supporting table are both provided with a damping material layer.

8. A method for motor vibration testing tooling, characterized in that, The following steps are involved: S1. Place the motor to be tested on a soft pad; S2, the electromagnet is energized, and the electromagnet moves upward due to the adsorption of the motor housing. After moving upward to the right position, the fixing plate is located between the upper support table and the lower support table and does not contact the upper support table and the lower support table, and at this time the adsorption piece is wrapped around the motor; S3, the vibration of the motor is transmitted to the vibration sensor, and the vibration sensor tests the vibration of the motor; S4. After the test is completed, turn off the power supply, the electromagnet is powered off, the electromagnet is separated from the motor, and the electromagnet moves downward due to gravity until the fixing plate contacts the lower support table.

9. A motor vibration test tooling method as claimed in claim 8, characterized in that: The following steps are also included: The height of the upper support table can be adjusted by adjusting the installation positions of the two partition plates of the left support plate / right support plate of the upper support table to adapt to the measurement of motors of different sizes.

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