Testing tool for testing oil inlet of motor rotor

Abstract

The utility model discloses a test tool used for testing oil inlet of a motor rotor, comprising a housing comprising a first oil inlet channel, one end of which is used for being communicated with an external oil inlet pipeline; one end of the connecting shaft is used for being connected with a driving shaft of an external rack, the other end of the connecting shaft is used for being connected with an external motor rotor, the connecting shaft comprises a second oil inlet channel extending in the axial direction, one end of the second oil inlet channel communicates with the other end of the first oil inlet channel, and the other end of the second oil inlet channel communicates with the driving end of the external motor rotor; and the accommodating cavity is used for accommodating an external motor rotor. According to the utility model, the first oil inlet channel is arranged on the shell, and the second oil inlet channel is arranged on the connecting shaft, so that oil can enter from the first oil inlet channel and then sequentially flows through the second oil inlet channel and the driving end of the motor rotor, and the oil can enter from the driving end of the motor rotor. Therefore, the test state is close to the actual state to the greatest extent and is further close to the actual product use process, so that the test accuracy is improved, and the test error is reduced.

Description

Technical Field

[0001] This utility model relates to the field of motor rotors, and in particular to a test fixture for testing oil inlet in motor rotors. Background Technology

[0002] In most oil-cooled electric drives, the drive shaft of the motor rotor and the reducer shaft are connected, and oil enters the drive shaft from the reducer shaft, thus simplifying the oil circuit and reducing costs. However, when testing oil intake for the motor rotor, due to test bench limitations, the test bench's drive shaft is directly connected to the motor rotor's drive shaft. This prevents the oil from entering through the drive end of the motor rotor as in actual electric drives, and instead, oil enters from the non-drive end of the motor rotor. This oil intake method causes a difference between the test conditions and the actual conditions, resulting in test errors. Utility Model Content

[0003] The purpose of this invention is to solve the technical problem of testing errors caused by oil entering from the non-drive end of the motor rotor in existing motor rotor oil filling tests. This invention provides a testing fixture for testing motor rotor oil filling. A first oil inlet channel is provided on the housing, and a second oil inlet channel is provided on the connecting shaft. Oil can enter the first oil inlet channel of the housing from an external oil inlet pipe, and then flow sequentially through the second oil inlet channel of the connecting shaft and the drive end of the motor rotor, thus achieving oil entry from the drive end of the motor rotor. Therefore, the test state can closely resemble the actual state, further approximating the actual product usage process, thereby improving test accuracy and reducing test errors.

[0004] To address the aforementioned technical problems, this utility model discloses a testing fixture for testing oil ingress into a motor rotor. The testing fixture includes:

[0005] Housing, the housing comprising:

[0006] The first oil inlet channel, one end of which is used to connect with an external oil inlet pipe;

[0007] A connecting shaft, one end of which is used to connect to the drive shaft of an external test bench, and the other end of which is used to connect to the drive end of an external motor rotor, the connecting shaft comprising:

[0008] The second oil inlet channel extends axially, with one end of the second oil inlet channel connected to the other end of the first oil inlet channel, and the other end of the second oil inlet channel being used to connect to the drive end of the motor rotor in the outside.

[0009] A receiving cavity for housing an external motor rotor.

[0010] By adopting the above technical solution, a first oil inlet channel is provided on the housing, and a second oil inlet channel is provided on the connecting shaft. Therefore, during the oil inlet test of the motor rotor, oil can enter the first oil inlet channel of the housing from the external oil inlet pipe, and then flow sequentially through the second oil inlet channel of the connecting shaft and the drive end of the motor rotor, thus realizing oil inlet from the drive end of the motor rotor. This oil inlet method replicates the actual electric drive's oil inlet through the drive end of the motor rotor, so the test state can be as close as possible to the actual state, further approaching the actual product usage process, thereby improving the test accuracy and reducing the test error.

[0011] According to another specific embodiment of the present invention, the housing includes:

[0012] An oil storage chamber extends along the axial direction and is connected to the other end of the first oil inlet channel;

[0013] The first part includes the first oil inlet channel and the oil storage chamber, which are located in the first part and are used to connect with the external platform.

[0014] According to another specific embodiment of the present invention, the first part includes:

[0015] Multiple first through holes are provided along the axial direction, the multiple first through holes penetrate the first portion, and the multiple first through holes are used to connect to an external platform by bolts;

[0016] Two first recesses are respectively located at both ends of the oil storage cavity along the axial direction;

[0017] Two first seals are respectively disposed in the two first recesses.

[0018] By adopting the above technical solution, the two ends of the oil storage chamber are sealed by two first sealing elements to prevent oil from overflowing from the two ends of the oil storage chamber and causing errors in the test results.

[0019] According to another specific embodiment of this utility model

[0020] The connecting shaft includes:

[0021] An oil inlet hole, radially extending through the connecting shaft, is located in an oil storage cavity. One end of the oil inlet hole communicates with the oil storage cavity, and the other end communicates with the second oil inlet channel.

[0022] The spline is located on the inner wall of the connecting shaft and is used to connect with the drive end of the motor rotor in the outside.

[0023] The test fixture for testing oil ingress into the motor rotor includes:

[0024] A connector, which is a hollow structure, is located in the second oil inlet channel. The connector is used to insert into the drive end of an external motor rotor and communicate with the drive end of the external motor rotor.

[0025] With the above technical solution, since one end of the connecting shaft is connected to the drive shaft of the external test bench and the other end of the connecting shaft is connected to the external motor rotor, when the motor rotor is tested for oil inlet, the drive shaft of the test bench will drive the connecting shaft and the drive end of the motor rotor to rotate synchronously.

[0026] To ensure a continuous oil supply to the motor rotor, an oil inlet is provided on the connecting shaft, located within the oil reservoir. This means the inlet is completely immersed in the oil-filled reservoir. Even when the connecting shaft is rotating at high speed, the oil in the reservoir can still enter the second oil inlet channel through the inlet, ensuring the smooth conduct of the motor rotor oil inlet test.

[0027] The connector is located in the second oil inlet channel and is inserted into the drive end of the external motor rotor. When the drive shaft of the external test bench drives the connecting shaft to start rotating, the stable connection between the connector and the spline enables the drive end of the motor rotor to rotate synchronously, ensuring the accuracy and efficiency of the transmission. At the same time, the connection between the connector and the drive end of the external motor rotor also ensures the correct operation of the oil circuit.

[0028] According to another specific embodiment of this utility model

[0029] The connecting shaft includes:

[0030] The second recess is provided circumferentially on the inner wall of the connecting shaft;

[0031] The second sealing element is disposed in the second recess and is in contact with the connecting element.

[0032] The second oil inlet channel includes:

[0033] An oil inlet area, which is connected to the oil inlet hole;

[0034] A transition region is connected to the oil inlet region. The second recess and the connector are located in the transition region, and the outer diameter of the connector is equal to the inner diameter of the transition region.

[0035] By adopting the above technical solution, the connection is sealed by the second sealing element to prevent oil from overflowing from the connection and causing errors in the test results.

[0036] The outer diameter of the connector is equal to the inner diameter of the transition area. In other words, under the conditions of high-speed oil flow and high-speed rotation of the connecting shaft, the connector can always fit tightly against the inner wall of the transition area without loosening.

[0037] According to another specific embodiment of the present invention, the housing includes a second part, which is a hollow structure. The second part is used to place an external motor rotor. One end of the second part is connected to the first part. The second part includes a plurality of circumferentially spaced hollow portions. In the radial direction, the hollow portions are spaced apart from the external motor rotor.

[0038] By adopting the above technical solution, the oil output of the motor rotor can be observed at any time through the hollowed-out part.

[0039] According to another specific embodiment of the present invention, the housing includes a third part, which is connected to the other end of the second part. The first part, the second part and the third part are connected in sequence to form the receiving cavity. The third part is used to connect to the non-driving end of the motor rotor in the outside.

[0040] According to another specific embodiment of the present invention, the housing includes a fourth part, which is a hollow structure. One end of the fourth part is connected to the first part, and the other end of the fourth part is used to connect to the drive end of the motor rotor in the outside through a bearing.

[0041] According to another specific embodiment of the present invention, the fourth part includes an oil overflow hole, which extends through the fourth part radially and is spaced apart from the drive end of the motor rotor in the outside world.

[0042] Using the above technical solution, the oil overflowing from the connection between the spline and the drive end of the motor rotor will collect in the fourth part and flow out from the overflow hole. Attached Figure Description

[0043] Figure 1 This invention relates to a test fixture for testing oil inlet in a motor rotor and a cross-sectional view of the motor rotor.

[0044] Figure 2 This invention illustrates an embodiment of the present invention. Figure 1 A magnified view of a portion of region A in the middle.

[0045] Figure 3 This is a perspective view of a test fixture used to test oil inlet in a motor rotor, according to an embodiment of the present invention.

[0046] Figure 4 This is a cross-sectional view of a test fixture used to test oil inlet in a motor rotor, according to an embodiment of the present invention.

[0047] Figure 5 This invention illustrates an embodiment of the present invention. Figure 4 A magnified view of a portion of region B in the middle.

[0048] Explanation of reference numerals in the attached figures

[0049] 1000 test fixtures;

[0050] Casing 100;

[0051] First oil inlet channel 110;

[0052] Oil reservoir 120;

[0053] First part 130; first through hole 131; first recess 132; first seal 133;

[0054] Part 2, 140; Openwork section, 141;

[0055] Part Three, 150;

[0056] Part 4, 160; Overflow hole, 161;

[0057] Connecting shaft 200;

[0058] Second oil inlet channel 210; oil inlet area 211; transition area 212; oil inlet hole 220; spline 230; second recess 240; second seal 250; circular structure 260; cylindrical structure 270;

[0059] Reception cavity 300;

[0060] Connector 400;

[0061] Motor rotor 2000;

[0062] Driver side 2100; non-driver side 2200. Detailed Implementation

[0063] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0064] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0065] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0066] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0067] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0068] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0069] refer to Figure 1 and Figure 2This application provides a test fixture 1000 (hereinafter referred to as "test fixture 1000") for testing the oil inlet of a motor rotor 2000. During testing of the motor rotor 2000, the motor rotor 2000 is placed on and connected to the test fixture 1000, and the oil passages within the motor rotor 2000 are connected to the oil passages within the test fixture 1000. A test bench (not shown in the figure) is connected to the test fixture 1000, and the drive shaft of the test bench (not shown in the figure) drives the test fixture 1000 to rotate the motor rotor 2000 at high speed.

[0070] The test fixture 1000 includes a housing 100, a connecting shaft 200, and a receiving cavity 300. The housing 100 includes a first oil inlet channel 110, one end of which is used to communicate with an external oil inlet pipe (not shown in the figure).

[0071] One end of the connecting shaft 200 is used to connect to the drive shaft of an external test bench, and the other end of the connecting shaft 200 is used to connect to the drive end 2100 of an external motor rotor 2000. The connecting shaft 200 includes a second oil inlet channel 210, which extends axially X. One end of the second oil inlet channel 210 communicates with the other end of the first oil inlet channel 110, and the other end of the second oil inlet channel 210 communicates with the drive end 2100 of the external motor rotor 2000. The receiving cavity 300 is used to house the external motor rotor 2000.

[0072] By adopting the above technical solution, a first oil inlet channel 110 is provided on the housing 100, and a second oil inlet channel 210 is provided on the connecting shaft 200. Therefore, during the oil inlet test of the motor rotor 2000, oil can enter the first oil inlet channel 110 of the housing 100 from the external oil inlet pipe, and then flow sequentially through the second oil inlet channel 210 of the connecting shaft 200 and the drive end 2100 of the motor rotor 2000, thus realizing oil inlet from the drive end 2100 of the motor rotor 2000. This oil inlet method replicates the actual electric drive's oil inlet through the drive end 2100 of the motor rotor 2000. Therefore, the test state can be as close as possible to the actual state, further approaching the actual product usage process, thereby improving the test accuracy and reducing the test error.

[0073] In some possible implementations, refer to Figure 1 and Figure 2 The housing 100 includes an oil storage chamber 120 and a first part 130. The oil storage chamber 120 extends along the axial direction X and is connected to the other end of the first oil inlet channel 110. The first part 130 is circular, and the first oil inlet channel 110 and the oil storage chamber 120 are located in the first part 130. The first part 130 is used to connect with the external platform.

[0074] It should be noted that the shape of the first part 130 is not specifically limited in this embodiment. For example, in other possible implementations, the shape of the first part 130 can be a rectangle, a triangle, etc.

[0075] In some possible implementations, refer to Figures 3 to 5 The first part 130 includes eleven first through holes 131, two first recesses 132 and two first seals 133. Along the axial direction X, the eleven first through holes 131 penetrate the first part 130. The first through holes 131 are used to connect to the external platform by bolts.

[0076] Along the axial direction X, two first recesses 132 are respectively provided at both ends of the oil storage cavity 120, and two first seals 133 are respectively provided at the two first recesses 132.

[0077] By adopting the above technical solution, the two ends of the oil storage cavity 120 are sealed by the two first sealing elements 133 respectively to prevent oil from overflowing from the two ends of the oil storage cavity 120 and causing errors in the test results.

[0078] It should be noted that the number of first through holes 131 is not specifically limited in this application embodiment. For example, in other possible implementations, the number of first through holes 131 may be ten, twelve, thirteen, etc.

[0079] In some possible implementations, refer to Figure 1 , Figure 4 and Figure 5 The connecting shaft 200 includes two oil inlet holes 220 and a spline 230. Along the radial direction Y, the oil inlet holes 220 penetrate the connecting shaft 200 and are located in the oil storage chamber 120. One end of the oil inlet hole 220 communicates with the oil storage chamber 120, and the other end communicates with the second oil inlet channel 210. The spline 230 is located on the inner wall of the connecting shaft 200 and is used to connect with the drive end 2100 of the external motor rotor 2000.

[0080] The test fixture 1000 includes a connector 400, which is a hollow structure and is located in the second oil inlet channel 210. The connector 400 is used to insert into the drive end 2100 of the external motor rotor 2000 and communicate with the drive end 2100 of the external motor rotor 2000.

[0081] With the above technical solution, since one end of the connecting shaft 200 is connected to the drive shaft of the external test bench and the other end of the connecting shaft 200 is connected to the external motor rotor 2000, when the motor rotor 2000 is tested for oil inlet, the drive shaft of the test bench will drive the connecting shaft 200 and the drive end 2100 of the motor rotor 2000 to rotate synchronously.

[0082] To ensure a continuous oil supply to the motor rotor 2000, an oil inlet 220 is provided on the connecting shaft 200, located within the oil reservoir 120. This means the oil inlet 220 is completely immersed in the oil-filled reservoir. Even when the connecting shaft 200 is rotating at high speed, the oil in the reservoir 120 can still enter the second oil inlet channel 210 through the oil inlet 220, ensuring the smooth conduct of the oil inlet test for the motor rotor 2000.

[0083] The connector 400 is located in the second oil inlet channel 210 and is inserted into the drive end 2100 of the external motor rotor 2000. When the drive shaft of the external platform drives the connecting shaft 200 to start rotating, the connector 400 and the spline 230 securely connect, thus synchronously driving the drive end 2100 of the motor rotor 2000 to rotate, ensuring the accuracy and efficiency of the transmission. Simultaneously, the connection between the connector 400 and the drive end 2100 of the external motor rotor 2000 also ensures the correct operation of the oil circuit.

[0084] In some possible implementations, refer to Figure 1 , Figure 4 and Figure 5 The connecting shaft 200 includes a circular structure 260 and a cylindrical structure 270. The circular structure 260 is used to connect with the drive shaft of the external platform, and the cylindrical structure 270 is used to connect with the drive end 2100 of the external motor rotor 2000. The second oil inlet channel 210 is provided in the cylindrical structure 270.

[0085] The connecting shaft 200 also includes a second recess 240 and a second sealing member 250 disposed on the cylindrical structure 270. The second recess 240 is disposed circumferentially on the inner wall of the cylindrical structure 270, and the second sealing member 250 is disposed on the second recess 240 and fits against the connecting member 400.

[0086] The second oil inlet channel 210 includes an oil inlet area 211 and a transition area 212. The oil inlet area 211 is connected to the oil inlet hole 220, and the transition area 212 is connected to the oil inlet area 211. The second recess 240 and the connector 400 are provided in the transition area 212. The outer diameter of the connector 400 is equal to the inner diameter of the transition area 212.

[0087] By adopting the above technical solution, the second sealing element 250 is used to seal the connector 400 to prevent oil from overflowing from the connector 400 and causing errors in the test results.

[0088] The outer diameter of the connector 400 is equal to the inner diameter of the transition area 212. In other words, under the conditions of high-speed oil flow and high-speed rotation of the connecting shaft 200, the connector 400 can always fit tightly against the inner wall of the transition area 212 without loosening.

[0089] In some possible implementations, refer to Figure 1 , Figure 4 and Figure 5 The housing 100 includes a second part 140, which is a hollow cylindrical structure used to house the external motor rotor 2000. One end of the second part 140 is connected to the first part 130. The second part 140 includes a plurality of circumferentially spaced hollow portions 141 arranged radially Y, which are spaced apart from the external motor rotor 2000.

[0090] By adopting the above technical solution, the oil output of the motor rotor 2000 can be observed at all times through the hollow part 141.

[0091] It should be noted that the shape of the second part 140 is not specifically limited in this embodiment. For example, in other possible implementations, the shape of the second part 140 can be a cuboid, a triangular prism, etc.

[0092] In some possible implementations, refer to Figure 1 , Figure 4 and Figure 5 The housing 100 includes a third part 150, which is circular and connected to the other end of the second part 140. The first part 130, the second part 140 and the third part 150 are connected in sequence to form a receiving cavity 300. The third part 150 is used to connect to the non-driving end 2200 of the motor rotor 2000 in the outside.

[0093] It should be noted that the shape of the third part 150 is not specifically limited in this embodiment. For example, in other possible implementations, the shape of the third part 150 can be a rectangle, a triangle, etc.

[0094] In some possible implementations, refer to Figure 1 , Figure 4 and Figure 5 The housing 100 includes a fourth part 160, which is a hollow cylindrical structure. One end of the fourth part 160 is connected to the first part 130, and the other end of the fourth part 160 is used to connect to the drive end 2100 of the motor rotor 2000 via a bearing.

[0095] It should be noted that the shape of the fourth part 160 is not specifically limited in this application embodiment. For example, in other possible implementations, the shape of the fourth part 160 can be a cuboid, a triangular prism, etc.

[0096] In some possible implementations, refer to Figure 1 , Figure 4 and Figure 5 The fourth part 160 includes an oil overflow hole 161 extending radially Y through the fourth part 160. The oil overflow hole 161 is spaced apart from the drive end 2100 of the external motor rotor 2000.

[0097] Using the above technical solution, the oil overflowing from the connection between the spline 230 and the drive end 2100 of the motor rotor 2000 will collect in the fourth part 160 and flow out from the overflow hole 161.

[0098] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A test tool for testing oil ingress of an electric machine rotor, characterized in that, The test tool for testing oil feeding of a motor rotor comprises: a housing comprising: a first oil feeding channel, one end of which is used for communication with an external oil feeding pipeline; a connecting shaft, one end of which is used for connection with a driving shaft of an external test bench, and the other end of which is used for connection with a driving end of an external motor rotor, the connecting shaft comprising: a second oil feeding channel, which extends in an axial direction, one end of which is in communication with the other end of the first oil feeding channel, and the other end of which is used for communication with the driving end of the external motor rotor; a receiving cavity, which is used for placement of the external motor rotor.

2. The test fixture for testing oil ingress of an electric machine rotor of claim 1, wherein, The housing comprises: an oil storage cavity, which extends in the axial direction, and which is in communication with the other end of the first oil feeding channel; a first part, in which the first oil feeding channel and the oil storage cavity are arranged, and which is used for connection with the external test bench.

3. The test fixture for testing oil ingress of an electric machine rotor of claim 2, wherein, The first part comprises: a plurality of first through holes, which penetrate the first part in the axial direction, and which are used for connection with the external test bench through bolts; two first recesses, which are respectively arranged at two ends of the oil storage cavity in the axial direction; two first sealing members, which are respectively arranged in the two first recesses.

4. The test tool for testing oil feeding of a motor rotor according to claim 1, wherein the connecting shaft comprises: an oil feeding hole, which penetrates the connecting shaft in a radial direction, is arranged in the oil storage cavity, and is in communication with the oil storage cavity at one end and with the second oil feeding channel at the other end; a spline, which is arranged on an inner wall of the connecting shaft, and which is used for connection with the driving end of the external motor rotor. The test tool for testing oil feeding of a motor rotor comprises: a connecting member, which is a hollow structure, is arranged in the second oil feeding channel, is used for insertion into the driving end of the external motor rotor, and is in communication with the driving end of the external motor rotor.

5. The test tool for testing oil feeding of a motor rotor according to claim 4, wherein the connecting shaft comprises: a second recess, which is arranged on the inner wall of the connecting shaft in a circumferential direction; a second sealing member, which is arranged in the second recess, and which is in contact with the connecting member; the second oil feeding channel comprises: an oil feeding area, which is in communication with the oil feeding hole; a transition area, which is in communication with the oil feeding area, in which the second recess and the connecting member are arranged, and in which the outer diameter of the connecting member is equal to the inner diameter of the transition area.

6. The test fixture for testing oil ingress of an electric machine rotor of claim 3, wherein, The housing comprises a second part, which is a hollow structure, is used for placement of the external motor rotor, is connected to the first part at one end, and comprises a plurality of hollow parts arranged in a circumferential direction at intervals, which are used for spacing from the external motor rotor in a radial direction.

7. The test fixture for testing oil ingress of an electric machine rotor of claim 6, wherein, The shell comprises a third part connected with the other end of the second part, and the first part, the second part and the third part are connected in sequence to form the containing cavity, and the third part is used for connecting with the non-driving end of the motor rotor in the outside world.

8. The test fixture for testing oil ingress of an electric machine rotor of claim 3, wherein, The shell comprises a fourth part which is a hollow structure, one end of the fourth part is connected with the first part, and the other end of the fourth part is used for connecting with the driving end of the motor rotor in the outside world through a bearing.

9. The test fixture for testing oil ingress of an electric machine rotor of claim 8, wherein, The fourth part comprises an oil overflow hole which penetrates the fourth part in the radial direction, and the oil overflow hole is used for being arranged at intervals with the driving end of the motor rotor in the outside world.

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