Test tool for single-bearing suspension type motor

Abstract

The invention relates to a test tool for a single-bearing suspension type motor. The test tool comprises a first supporting base, a second supporting base, a test end cover, a dummy shaft and a connecting disc, two first supporting bases are mounted on the second supporting base, and the upper ends of the two first supporting bases are connected with a body of the single-bearing suspension type motor; the open end of the single-bearing suspension type motor is provided with a test end cover, the lower edge of the test end cover is connected with the second supporting base, the middle of the test end cover rotatably supports a dummy shaft, one end of the dummy shaft is in transmission connection with a rotating shaft of the single-bearing suspension type motor, the other end of the dummy shaft is connected with a connecting disc, and the connecting disc is in transmission connection with a rotating shaft of the accompanying test motor. According to the test tool, the body of the single-bearing suspension type motor is supported through the first support base, the end part of the single-bearing suspension type motor is supported through the second support base and the support test end cover, and the dummy shaft forms transmission connection between the single-bearing suspension type motor and the accompanying test motor, so that the load test of the single-bearing suspension type motor can be realized.

Description

Technical Field

[0001] The invention relates to the technical field of motor testing equipment, and in particular to a test fixture for a single-bearing suspended motor. Background Art

[0002] Single-bearing suspension motor, also known as single-support motor or cantilever motor, means that the motor is designed with only one rear bearing, and the bearing on the coupling side (flange shaft extension) is designed as a temporary support. After the unit is aligned, grouted and the flywheel is installed, the temporary support will be removed, and the weight of the motor rotor will eventually be supported by the compressor's main bearing and the motor's rear bearing.

[0003] The single-bearing suspended motor itself has no end cover. Its end is usually connected to the diesel engine and shares a set of shaft systems with the diesel engine. During the factory test, the single-bearing suspended motor needs to be assembled with the test companion motor for testing. At present, the single-bearing suspended motor has the following problems during the test process: (1) The single-bearing suspended motor has no base. Its body is a suspended structure with an open end. Therefore, the single-bearing suspended motor cannot be directly installed on the test bench; (2) The shaft length of the single-bearing suspended motor is limited and cannot be directly connected to the shaft of the test companion motor. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a test fixture for a single-bearing suspended motor to solve the technical problems of support rotation and connection of the existing single-bearing suspended motor during factory testing.

[0006] (II) Technical solution

[0007] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0008] The embodiment of the present invention provides a test fixture for a single-bearing suspended motor, comprising a first support base, a second support base, a test end cover, a dummy shaft and a connecting plate;

[0009] Two first support bases are installed on the second support base, and the upper ends of the two first support bases are connected to the body of the single-bearing suspension motor; a test end cover is installed at the open end of the single-bearing suspension motor, and the lower edge of the test end cover is connected to the second support base, and the middle part of the test end cover rotatably supports a dummy shaft, one end of the dummy shaft is transmission-connected to the rotating shaft of the single-bearing suspension motor, and the other end of the dummy shaft is connected to a connecting disk, and the connecting disk is transmission-connected to the rotating shaft of the accompanying test motor.

[0010] Optionally, the first support base includes a first bottom plate and a first support plate;

[0011] The first bottom plate is installed on the second supporting base, the upper surface of the first bottom plate is provided with a first supporting plate extending in the transverse direction, and the upper end of the first supporting plate is connected to the body of the single-bearing suspension motor.

[0012] Optionally, the second support base includes a first bottom plate, a second support plate, a third support plate and a connecting top plate;

[0013] A second support plate extending longitudinally is arranged on the upper surface of the first bottom plate, and the upper end of the second support plate is connected to the test end cover. Two third support plates extending transversely are arranged on the upper surface of the first bottom plate, and the upper ends of the third support plates are connected to the connecting top plate, and the connecting top plate is connected to the first bottom plate.

[0014] Optionally, a plurality of first reinforcing rib plates are provided at the connection between the first bottom plate and the first support plate, and the plurality of first reinforcing rib plates are right-angled triangular plates;

[0015] A plurality of second reinforcing rib plates are arranged in the enclosed area of ​​the first bottom plate, the third supporting plate and the connecting top plate.

[0016] Optionally, a first lifting hole is opened in the middle of the first support plate, and a second lifting hole is opened in the middle of the second support plate.

[0017] Optionally, a bearing chamber is provided in the middle of the test end cover, a bearing is installed in the bearing chamber, the dummy shaft passes through the bearing and the bearing forms a rotation support for the dummy shaft;

[0018] A bearing inner cover is arranged on the inner side of the test end cover corresponding to the bearing chamber, and a bearing outer cover is arranged on the outer side of the test end cover corresponding to the bearing chamber. The bearing inner cover and the bearing outer cover are both provided with lubricating oil sealing grooves on the side facing the bearing chamber.

[0019] Optionally, it further comprises an oil-slinging pan, which is sleeved on the dummy shaft and located between the bearing and the outer cover;

[0020] A flange socket is arranged on one side of the test end cover facing the single-bearing suspension type motor, and a boss is arranged at the end of the test end cover, and the boss is inserted into the flange socket.

[0021] Optionally, a retaining ring groove is provided on the outer circumferential surface of the dummy shaft, a shaft spring retaining ring is installed in the retaining ring groove, and the shaft spring retaining ring abuts against the oil-slinging pan.

[0022] Optionally, the dummy shaft is a hollow cylindrical structure, and a keyway parallel to the axial direction is provided on the inner wall of the dummy shaft. A flat key is provided on the rotating shaft of the single-bearing suspended motor. When the rotating shaft of the single-bearing suspended motor is inserted into the dummy shaft, the flat key can enter the parallel keyway to limit the dummy shaft circumferentially.

[0023] Optionally, a plurality of countersunk bolts and a plurality of standard fasteners are also included;

[0024] A plurality of countersunk holes are provided in the middle of the connecting plate corresponding to the end surface of the dummy shaft, and a plurality of countersunk bolts are passed through the countersunk holes one by one and screwed into the threaded holes on the dummy shaft to fix the dummy shaft and the connecting plate together;

[0025] A plurality of through holes are provided around the edges of the connection plate, and the plurality of through holes are fixedly connected to the coupling of the accompanying test motor through standard fasteners.

[0026] (III) Beneficial effects

[0027] The beneficial effects of the present invention are as follows: the test fixture of the single-bearing suspension motor of the present invention comprises a first support base, a second support base, a test end cover, a dummy shaft and a connecting plate; two first support bases are installed on the second support base, and the upper ends of the two first support bases are connected to the body of the single-bearing suspension motor; the test end cover is installed at the open end of the single-bearing suspension motor, the lower edge of the test end cover is connected to the second support base, the middle part of the test end cover rotatably supports the dummy shaft, one end of the dummy shaft is transmission-connected to the rotating shaft of the single-bearing suspension motor, the other end of the dummy shaft is connected to the connecting plate, and the connecting plate is transmission-connected to the rotating shaft of the accompanying test motor. Compared with the prior art, it can support the body of the single-bearing suspension motor through the first support base, the second support base and the test end cover support the end of the single-bearing suspension motor, and the dummy shaft forms a transmission connection between the rotating shaft of the single-bearing suspension motor and the rotating shaft of the accompanying test motor, so that the rotation of the rotating shaft of the single-bearing suspension motor drives the dummy shaft and the connecting plate to rotate, and the rotation of the connecting plate drives the rotating shaft of the accompanying test motor to rotate, thereby realizing the load test of the single-bearing suspension motor. In addition, the test tooling has a small number of parts, light weight, a short shaft system after installation, and a simple assembly and disassembly process, which can effectively improve the efficiency of tooling assembly during motor testing and the accuracy of motor testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional schematic diagram of a test fixture of a single-bearing suspension motor and embodiment 1 of the single-bearing suspension motor of the present invention;

[0029] Figure 2 for Figure 1 A three-dimensional schematic diagram of the first supporting base and the second supporting base;

[0030] Figure 3 for Figure 1 A schematic diagram of the test fixture of the single-bearing suspension motor and the internal structure of the single-bearing suspension motor;

[0031] Figure 4 for Figure 3 The test fixture of the single-bearing suspension motor and the enlarged schematic diagram of the single-bearing suspension motor at A;

[0032] Figure 5It is a cross-sectional schematic diagram of a test end cover, a dummy shaft and a connecting plate of Example 1 of the test fixture of a single-bearing suspension motor of the present invention;

[0033] Figure 6 It is a schematic cross-sectional view of a dummy shaft and a connecting plate of Example 1 of the test fixture of a single-bearing suspended motor of the present invention.

[0034] [Description of Reference Numerals]

[0035] 1: first support base; 101: first bottom plate; 102: first support plate; 103: first reinforcing rib plate; 104: first mounting hole; 105: first lifting hole; 2: second support base; 201: first bottom plate; 202: second support plate; 203: third support plate; 204: connecting top plate; 205: second reinforcing rib plate; 206: second mounting hole; 207: second lifting hole; 208: weight reduction hole; 3: test end cover; 301: top screw hole; 302: third mounting hole; 303: flange socket; 4: dummy shaft; 401: keyway; 402: retaining ring groove; 5: connecting plate; 501: countersunk hole; 502: through hole; 6: bearing; 7: bearing inner cover; 8: bearing outer cover; 9: oil throwing plate; 10: spring retaining ring for shaft; 11: single bearing suspended motor. DETAILED DESCRIPTION

[0036] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below with reference to the accompanying drawings and through specific embodiments. Figure 1 The orientation is for reference. In this embodiment, the "front-rear direction" is the longitudinal direction, the "left-right direction" is the lateral direction, and the axial direction of the rotating shaft of the single-bearing suspension motor 11 is parallel to the left-right direction.

[0037] Embodiment 1:

[0038] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 This embodiment provides a test fixture for a single-bearing suspended motor, including a first support base 1, a second support base 2, a test end cover 3, a dummy shaft 4 and a connecting plate 5.

[0039] The second support base 2 is arranged on the test bench, and two first support bases 1 are detachably installed on the second support base 2, and the upper ends of the two first support bases 1 are connected to the body of the single-bearing suspended motor 11; the test end cover 3 is detachably installed at the open end of the single-bearing suspended motor 11, and the second support base 2 is connected to the lower edge of the test end cover 3; the middle part of the test end cover 3 rotatably supports the dummy shaft 4, one end of the dummy shaft 4 is transmission-connected to the rotating shaft of the single-bearing suspended motor 11, and the other end of the dummy shaft 4 is connected to the connecting disk 5, and the connecting disk 5 is transmission-connected to the rotating shaft of the accompanying test motor.

[0040] The test fixture of the single-bearing suspended motor of the present embodiment comprises a first supporting base 1, a second supporting base 2, a test end cover 3, a dummy shaft 4 and a connecting plate 5. The first supporting base 1 supports the body of the single-bearing suspended motor 11, the second supporting base 2 and the test end cover 3 support the end of the single-bearing suspended motor 11, and the rotating shaft of the single-bearing suspended motor 11 is connected to the rotating shaft of the accompanying test motor through the dummy shaft 4. In this way, the rotation of the rotating shaft of the single-bearing suspended motor drives the dummy shaft and the connecting plate to rotate, and the rotation of the connecting plate drives the rotating shaft of the accompanying test motor to rotate, thereby realizing the load test of the single-bearing suspended motor 11. The test fixture has a small number of parts, light weight of parts, a short shaft system after installation, and a simple assembly and disassembly process, which can effectively improve the efficiency of tooling assembly during the test and the accuracy of the motor test.

[0041] Specifically, the first support base 1 includes a first bottom plate 101 and a first support plate 102. The first bottom plate 101 is mounted on the second support base 2, and the first support plate 102 extending in the transverse direction is arranged on the upper surface of the first bottom plate 101, and the upper end of the first support plate 102 is connected to the body of the single-bearing suspension motor 11, and a first hoisting hole 105 is opened in the middle of the first support plate 102 for hoisting external equipment.

[0042] Preferably, the upper end of the first support plate 102 is bolted to the body of the single-bearing suspension motor 11. That is, a plurality of first mounting holes 104 are provided at the upper end of the first support plate 102, and standard fasteners are passed through the first mounting holes 104 one by one and then screwed into the threaded holes on the body of the single-bearing suspension motor 11 to fix the first support plate 102 and the single-bearing suspension motor 11 together.

[0043] Furthermore, the first support base 1 further includes a first reinforcing rib plate 103, which is a right-angled triangular plate, a first right-angled side of the first reinforcing rib plate 103 connected to the first bottom plate 101, and a second right-angled side of the first reinforcing rib plate 103 connected to the first support plate 102. The purpose of providing the first reinforcing rib plate 103 is to improve the structural strength of the first support base 1. It should be noted that the first bottom plate 101, the first support plate 102 and the first reinforcing rib plate 103 are assembled into the first support base 1 by welding.

[0044] Specifically, the second support base 2 includes a first bottom plate 201, a second support plate 202, a third support plate 203 and a connecting top plate 204. The upper surface of the first bottom plate 201 is provided with a second support plate 202 extending in the longitudinal direction, the upper end of the second support plate 202 is connected to the test end cover 3, and a second hoisting hole 207 is opened in the middle of the second support plate 202 for hoisting external equipment; the upper surface of the first bottom plate 201 is provided with two third support plates 203 extending in the transverse direction, the upper end of the third support plate 203 is connected to the connecting top plate 204, and the connecting top plate 204 is connected to the first bottom plate 101.

[0045] Preferably, the second support plate 202 is bolted to the test end cover 3, and the connecting top plate 204 is bolted to the first bottom plate 101. That is, a plurality of second mounting holes 206 are provided at the upper end of the second support plate 202, and the standard fasteners pass through the second mounting holes 206 one by one and are screwed into the threaded holes on the test end cover 3 to fix the second support plate 202 and the test end cover 3 together.

[0046] Furthermore, a plurality of second reinforcing ribs 205 are provided in the enclosed area of ​​the first bottom plate 201, the third support plate 203 and the connecting top plate 204, and a weight-reducing hole 208 is provided on each second reinforcing rib 205. The purpose of providing the second reinforcing ribs 205 is to improve the structural strength of the second support base 2, and the weight-reducing holes 208 are used to reduce the overall weight of the second support base 2. It should be noted that the first bottom plate 201, the second support plate 202, the third support plate 203, the connecting top plate 204 and the second reinforcing ribs 205 are assembled into the second support base 2 by welding.

[0047] See also Figure 1 The test end cover 3 is provided with a plurality of third mounting holes 302 along the circumferential direction, and each third mounting hole 302 is installed with a standard fastener, and the standard fastener is connected to the end of the single-bearing suspension motor 11 .

[0048] Furthermore, a top screw hole 301 is provided on the test end cover 3 to assist in disassembling the test end cover 3. The top screw hole 301 is a through hole, one part of which is cylindrical, and the other part is a threaded hole formed after processing. By pressing in a bolt, the head of the bolt can abut against the single-bearing suspension motor 11, so that the bolt can lift the test end cover 3 to separate the test end cover 3 from the single-bearing suspension motor 11.

[0049] Combination Figure 3 and Figure 4 As shown, a bearing chamber is provided in the middle of the test end cover 3, a bearing 6 is installed in the bearing chamber, the dummy shaft 4 passes through the bearing 6 and the bearing 6 forms a rotation support for the dummy shaft 4;

[0050] The inner side of the test end cover 3 is provided with a bearing inner cover 7 corresponding to the bearing chamber, and the outer side of the test end cover 3 is provided with a bearing outer cover 8 corresponding to the bearing chamber. The bearing inner cover 7 and the bearing outer cover 8 are both provided with lubricating oil sealing grooves on the side facing the bearing chamber. The lubricating oil sealing groove is filled with lubricating oil, and the lubricating oil forms an oil film when the dummy shaft 4 rotates, which can better seal. It should be noted that the bearing inner cover 7, the bearing outer cover 8 and the test end cover 3 are correspondingly provided with through holes. After the bolts pass through the bearing inner cover 7, the bearing outer cover 8 and the test end cover 3 in turn, they are screwed together with the nuts to fix the bearing inner cover 7, the bearing outer cover 8 and the test end cover 3 together.

[0051] The test fixture of the single-bearing suspended motor of this embodiment assembles the stator and rotor of the single-bearing suspended motor 11 on the support base and the dummy shaft 4 respectively, and supports the single-bearing suspended motor 11 through bearings on both sides, so as to complete various load tests of the single-bearing suspended motor 11.

[0052] See also Figure 5 and Figure 6 The test fixture of the single-bearing suspended motor of this embodiment also includes an oil-slinging pan 9, which is sleeved on the dummy shaft 4 and located between the bearing 6 and the outer cover 8 to prevent the lubricating oil inside the single-bearing suspended motor 11 from leaking and prevent external dust from entering the bearing 6, thereby ensuring the normal operation of the single-bearing suspended motor 11 and extending the service life of the single-bearing suspended motor 11.

[0053] Furthermore, a retaining ring groove 402 is provided on the outer circumferential surface of the dummy shaft 4, and a shaft spring retaining ring 10 is installed in the retaining ring groove 402, and the shaft spring retaining ring 10 abuts against the oil-slinging plate 9. The purpose of providing the shaft spring retaining ring 10 is to prevent unnecessary axial movement of the oil-slinging plate 9 and the bearing 6, and to keep the tooling running smoothly.

[0054] Furthermore, a flange socket 303 is provided on the side of the test end cover 3 facing the single-bearing suspended motor 11, and a boss is provided at the end of the test end cover 3, which is inserted into the flange socket 303 to enhance the sealing of the connection and prevent the leakage of lubricating oil inside the single-bearing suspended motor 11.

[0055] Furthermore, the dummy shaft 4 is a hollow cylindrical structure, and a keyway 401 parallel to the axial direction is provided on the inner wall of the dummy shaft 4. A flat key is provided on the rotating shaft of the single-bearing suspended motor 11. When the rotating shaft of the single-bearing suspended motor 11 is inserted into the dummy shaft 4, the flat key can enter the parallel keyway 401 to limit the dummy shaft 4 circumferentially.

[0056] Furthermore, a plurality of countersunk holes 501 are provided in the middle of the connecting plate 5 corresponding to the end surface of the dummy shaft 4 , and countersunk bolts are installed in the plurality of countersunk holes 501 . The countersunk bolts are screwed into the threaded holes on the dummy shaft 4 to fix the dummy shaft 4 and the connecting plate 5 together.

[0057] A plurality of through holes 502 are formed around the edges of the connection plate 5 , and the plurality of through holes 502 are fixedly connected to the coupling of the accompanying test motor through standard fasteners.

[0058] In this embodiment, the standard fasteners are preferably bolts.

[0059] Embodiment 2:

[0060] This embodiment provides a method for installing and disassembling the test fixture of the above-mentioned single-bearing suspension motor, comprising the following steps:

[0061] S1. Preparatory work before assembly: Place two first support bases 1 in parallel on the installation ground, and assemble and fix the single-bearing suspension motor 11 between the two first support bases 1 by standard fasteners, so that the single-bearing suspension motor 11 is placed horizontally. Specifically, the two first support bases 1 are located at the front and rear sides of the single-bearing suspension motor 11, and are fixedly connected to the body of the single-bearing suspension motor 11.

[0062] S2, assembling the dummy shaft 4: installing the dummy shaft 4 on the rotating shaft of the single-bearing suspension motor 11, and connecting them with a flat key in the middle, and finally installing them until the steps of the dummy shaft 4 and the rotating shaft of the single-bearing suspension motor 11 overlap.

[0063] S3, assembly of bearing 6: install the bearing inner cover 7 on the installed dummy shaft 4, and then shrink fit the inner ring of the bearing 6 on the dummy shaft 4. Shrink fitting of bearings is a method of heating the bearing 6 to a certain temperature, and using the principle of thermal expansion and contraction to expand the inner diameter of the bearing 6, so that the bearing 6 can be easily sleeved on the dummy shaft 4.

[0064] S4. Assembling the test end cover 3: Install the test end cover 3 so that it is assembled with the outer ring of the bearing 6, and fix it to the end of the single-bearing suspension motor 11 with standard fasteners.

[0065] S5. Assembly of the bearing outer cover 8: Install the oil-slinging pan 9 onto the dummy shaft 4, and then install the shaft spring retaining ring 10 onto the retaining ring groove 402 of the dummy shaft 4 to block the oil-slinging pan 9, and then install the bearing outer cover 8 on the outside of the test end cover 3, and finally use standard fasteners to fasten the bearing inner cover 7, the test end cover 3, and the bearing outer cover 8.

[0066] S6. Assembly of the connection plate 8: Install the connection plate 8 to the end of the dummy shaft 4 and fix it using standard fasteners.

[0067] S7. Lift the single-bearing suspended motor 11 and the first support base 1 and other assembled parts together through the lifting motor, place and install them on the second support base 2, use standard fasteners to fasten the first bottom plate 101 of the first support base 1 and the connecting top plate 204 of the support base 2 together, and at the same time use standard fasteners to install and fasten the second support plate 202 of the support base 2 and the test end cover 3 together.

[0068] S8. Disassembly process of single-bearing suspended motor 11: first remove the second supporting base 2, remove the connecting plate 5 from the dummy shaft 4, remove the bearing outer cover 8 from the test end cover 3, remove the test end cover 3 from the bearing 6, remove the shaft elastic retaining ring 10 and the oil-slinging plate 9, and remove the dummy shaft 4 together with the bearing 6 and the bearing inner cover 7.

[0069] S9, the assembly process of the next single-bearing suspension motor 11; repeat the above process from S1 to S8.

[0070] The rest of the same points as in Example 1 will not be repeated here.

[0071] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0072] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0074] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0075] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A test fixture for a single-bearing suspended motor, characterized in that: It comprises a first supporting base (1), a second supporting base (2), a test end cover (3), a dummy shaft (4) and a connecting plate (5); Two first support bases (1) are mounted on the second support base (2), and the upper ends of the two first support bases (1) are connected to the body of the single-bearing suspension motor (11); a test end cover (3) is mounted on the open end of the single-bearing suspension motor (11), and the lower edge of the test end cover (3) is connected to the second support base (2); the middle part of the test end cover (3) rotatably supports a dummy shaft (4), one end of the dummy shaft (4) is transmission-connected to the rotating shaft of the single-bearing suspension motor (11), and the other end of the dummy shaft (4) is connected to a connecting plate (5), and the connecting plate (5) is transmission-connected to the rotating shaft of the accompanying test motor.

2. The test fixture for a single-bearing suspended motor according to claim 1, characterized in that: The first support base (1) comprises a first bottom plate (101) and a first support plate (102); A first base plate (101) is mounted on the second support base (2); a first support plate (102) extending in the transverse direction is arranged on the upper surface of the first base plate (101); and an upper end of the first support plate (102) is connected to the body of the single-bearing suspended motor (11).

3. The test fixture for a single-bearing suspended motor according to claim 2, characterized in that: The second support base (2) comprises a first bottom plate (201), a second support plate (202), a third support plate (203) and a connecting top plate (204); A second support plate (202) extending in the longitudinal direction is arranged on the upper surface of the first bottom plate (201), and the upper end of the second support plate (202) is connected to the test end cover (3). Two third support plates (203) extending in the transverse direction are arranged on the upper surface of the first bottom plate (201), and the upper ends of the third support plates (203) are connected to the connecting top plate (204), and the connecting top plate (204) is connected to the first bottom plate (101).

4. The test fixture for a single-bearing suspended motor according to claim 3, characterized in that: A plurality of first reinforcing rib plates (103) are provided at the connection between the first bottom plate (101) and the first support plate (102), and the plurality of first reinforcing rib plates (103) are right-angled triangular plates; A plurality of second reinforcing rib plates (205) are arranged in an area enclosed by the first bottom plate (201), the third support plate (203) and the connecting top plate (204).

5. The test fixture for a single-bearing suspended motor according to claim 3, characterized in that: A first lifting hole (105) is provided in the middle of the first supporting plate (102), and a second lifting hole (207) is provided in the middle of the second supporting plate (202).

6. The test fixture for a single-bearing suspended motor according to claim 1, characterized in that: A bearing chamber is provided in the middle of the test end cover (3), a bearing (6) is installed in the bearing chamber, the dummy shaft (4) passes through the bearing (6) and the bearing (6) forms a rotation support for the dummy shaft (4); A bearing inner cover (7) is arranged on the inner side of the test end cover (3) corresponding to the bearing chamber, and a bearing outer cover (8) is arranged on the outer side of the test end cover (3) corresponding to the bearing chamber. The bearing inner cover (7) and the bearing outer cover (8) are both provided with lubricating oil sealing grooves on the side facing the bearing chamber.

7. The test fixture for a single-bearing suspended motor according to claim 6, characterized in that: It also includes an oil-slinging plate (9), which is sleeved on the dummy shaft (4) and located between the bearing (6) and the outer cover (8); A flange socket (303) is arranged on the side of the test end cover (3) facing the single-bearing suspension type motor (11), and a boss is arranged at the end of the test end cover (3), and the boss is inserted into the flange socket (303).

8. The test fixture for a single-bearing suspended motor according to claim 7, characterized in that: A retaining ring groove (402) is provided on the outer circumferential surface of the dummy shaft (4), a shaft spring retaining ring (10) is installed in the retaining ring groove (402), and the shaft spring retaining ring (10) abuts against the oil throwing plate (9).

9. The test fixture for a single-bearing suspended motor according to claim 1, characterized in that: The dummy shaft (4) is a hollow cylindrical structure. A keyway (401) parallel to the axial direction is provided on the inner side wall of the dummy shaft (4). A flat key is provided on the rotating shaft of the single-bearing suspended motor (11). When the rotating shaft of the single-bearing suspended motor (11) is inserted into the dummy shaft (4), the flat key can enter the parallel keyway (401) to limit the dummy shaft (4) in the circumferential direction.

10. The test fixture for a single-bearing suspended motor according to claim 9, characterized in that: Also included are a number of countersunk bolts and a number of standard fasteners; A plurality of countersunk holes (501) are provided in the middle of the connecting plate (5) corresponding to the end surface of the dummy shaft (4); a plurality of countersunk bolts are passed through the countersunk holes (501) one by one and screwed into the threaded holes on the dummy shaft (4) to fix the dummy shaft (4) and the connecting plate (5) together; A plurality of through holes (502) are provided on the periphery of the connecting plate (5), and the plurality of through holes (502) are fixedly connected to the coupling of the accompanying test motor via standard fasteners.

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