CN212111695U - Load device for testing motor load - Google Patents
Load device for testing motor load Download PDFInfo
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- CN212111695U CN212111695U CN202020232699.5U CN202020232699U CN212111695U CN 212111695 U CN212111695 U CN 212111695U CN 202020232699 U CN202020232699 U CN 202020232699U CN 212111695 U CN212111695 U CN 212111695U
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Abstract
The application discloses a load device for testing motor load, which comprises a shaft sleeve, fan blades and a fastening sleeve; the shaft sleeve is provided with an axially through mounting hole; the fan blades are fixedly distributed on the periphery of the shaft sleeve; the side wall of the fastening sleeve is provided with an avoiding groove allowing the fastening sleeve to be folded and deformed, the fastening sleeve is detachably inserted into the mounting hole, the load device is mounted on a motor shaft of a motor to be tested through the fastening sleeve in a test state, and the fastening sleeve is wedged in a radial gap between the motor shaft and the shaft sleeve. Compared with the prior art, the scheme has the advantages that the assembly and installation process of the load device and the motor shaft is simple, when the fastening sleeve is wedged in the radial gap between the motor shaft and the shaft sleeve, the surface of the fastening sleeve is in surface-to-surface contact with the motor shaft, and therefore the problem that the surface of the motor shaft is scratched is reduced or avoided.
Description
Technical Field
The application relates to the field of motor testing, in particular to a load device for testing motor load.
Background
The motor is an electromagnetic device which realizes electric energy conversion or transmission according to an electromagnetic induction law. Its main function is to generate driving torque as power source of electric appliance or various machines. Its main function is to convert electric energy into mechanical energy. In the manufacturing process of the motor, the motor load test is usually performed on the assembled motor to ensure the quality of the delivered motor.
At present, in the prior art, when testing the load of the motor, the motor is generally installed in the motor testing fan, and then fixed by a gasket and a fastening bolt, so that the inner control side of the gasket is attached to the surface of the shaft of the motor, and the motor is attached to the testing fan by using friction force.
However, when the motor is installed in the motor testing fan and the load test is performed, the spacer and the motor shaft are in point-to-point or line-to-line contact, so that the surface of the motor shaft is scratched, the surface smoothness of the motor shaft is damaged, and the product is poor.
SUMMERY OF THE UTILITY MODEL
The application provides a load device for testing motor load for solve among the prior art unable definite motor and can scrape the surface of motor shaft, destroy the technical problem of the smooth finish of motor shaft.
The application provides a load device for testing motor load, includes:
the shaft sleeve is provided with an axially through mounting hole;
the fan blades are fixedly distributed on the periphery of the shaft sleeve;
the side wall of the fastening sleeve is provided with an avoiding groove allowing the fastening sleeve to be folded and deformed, the fastening sleeve is detachably inserted into the mounting hole, the load device is mounted on a motor shaft of a motor to be tested through the fastening sleeve in a test state, and the fastening sleeve is wedged in a radial gap between the motor shaft and the shaft sleeve.
Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.
Optionally, the adapter sleeve includes barrel and the installation department that is located barrel axial one end, the wall thickness of barrel is played to the other end taper from installation department one end.
Optionally, an included angle between the outer side wall and the inner side wall of the cylinder body is θ 1 along the axial direction of the cylinder body, and the range of θ 1 is 5 degrees to 15 degrees.
Optionally, the aperture of the mounting hole is gradually reduced from one end to the other end; along the axial direction of the mounting hole, the included angle between the side wall of the mounting hole and the axis of the mounting hole is theta 2, and the range of the theta 2 is 5-15 degrees.
Optionally, the avoiding groove extends along a bus direction of the fastening sleeve, or is obliquely crossed with the bus of the fastening sleeve.
Optionally, an integrated structure or a split fixing structure is adopted between the mounting part and the fastening sleeve; the mounting portions are arranged continuously or at intervals in the circumferential direction of the fastening sleeve.
Optionally, the cylinder is made of an elastic material.
Optionally, the axial length of the cylinder is 5 cm-30 cm.
Alternatively, the mounting portion is fixed to the end surface of the boss by a plurality of fastening bolts arranged in the circumferential direction.
Optionally, the axle sleeve is provided with and is located the peripheral heavy groove of mounting hole, the installation department is arranged in the heavy groove, just the periphery wall of installation department with the lateral wall of heavy groove is laminated mutually.
The application discloses a load device for testing motor load is simple with motor shaft assembly installation technology, and wherein when the adapter sleeve wedging is in the radial clearance of motor shaft and axle sleeve, be the contact of face with the face between adapter sleeve and the motor shaft to reduce or avoid the problem that produces the fish tail to the motor shaft surface.
Drawings
Fig. 1 is a schematic structural diagram of a load device for testing a load of a motor according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of the shaft sleeve and the fan blade shown in FIG. 1;
FIG. 3 is a schematic view of the fastener sleeve of FIG. 1;
FIG. 4 is a schematic view of the fastener sleeve of FIG. 3;
fig. 5 is a schematic structural view of the fastening sleeve of fig. 3.
The reference numerals in the figures are illustrated as follows:
100. a load device; 101. a motor; 102. a motor shaft; 10. a shaft sleeve; 11. mounting holes; 12. sinking a groove; 13. a threaded hole; 20. a fan blade; 30. fastening sleeves; 31. a barrel; 32. an installation part; 33. an avoidance groove; 34. a through hole; 35. a shaft hole; 40. and fastening the bolt.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In one embodiment, as shown in fig. 1 to 5, the present application provides a load device 100, which includes a shaft sleeve 10, fan blades 20, and a fastening sleeve 30, wherein the shaft sleeve 10 has an axially through mounting hole 11; the fan blades 20 are fixedly distributed on the periphery of the shaft sleeve 10; the sidewall of the fastening sleeve 30 is provided with an avoiding groove 33 allowing the fastening sleeve 30 to be folded and deformed, the fastening sleeve 30 is detachably inserted into the mounting hole 11, the load device 100 is mounted on the motor shaft 102 of the motor 101 to be tested through the fastening sleeve 30 in a test state, and the fastening sleeve 30 is wedged in a radial gap between the motor shaft 102 and the shaft sleeve 10.
The fastening sleeve 30 has a shaft hole 35 through which the motor shaft 102 passes. Specifically, the bushing 10 is firstly sleeved on the outer side of the motor shaft 102 through the mounting hole 11, then the fastening sleeve 30 is sleeved on the outer side of the motor shaft 102 through the matching of the shaft hole 35 and the motor shaft 102, and finally the fastening sleeve 30 is wedged in the radial gap between the motor shaft 102 and the bushing 10 to fix the fastening sleeve 30 on the motor shaft 102. So that the mounting process of the load device 100 on the motor shaft 102 is simple.
Meanwhile, when the fastening sleeve 30 is wedged in the radial gap between the motor shaft and the shaft sleeve 10, the fastening sleeve 30 and the motor shaft 102 are in surface-to-surface contact, so that the problem of scratching the surface of the motor shaft is reduced or avoided. In designing the motor 101, there is no need to consider the connection manner of the motor shaft 102 and the load device 100, and therefore, there is no need to specially design the motor shaft 102.
The section of the fastening sleeve 30 in the axial direction of the fastening sleeve 30 is wedge-shaped, and in the process that the fastening sleeve 30 is wedged in the radial gap between the motor shaft 102 and the shaft sleeve 10, the inner side wall of the mounting hole 11 can move towards the motor shaft 102 by abutting against the outer side wall of the fastening sleeve 30 until the inner side wall of the fastening sleeve 30 is attached to the motor shaft 102.
In another embodiment, as shown in fig. 3, in order to facilitate the cylinder 31 to be wedged into the radial gap between the motor shaft 102 and the bushing 10, the fastening sleeve 30 includes a cylinder 31 and a mounting portion 32 located at one axial end of the cylinder 31, and the wall thickness of the cylinder 31 is gradually reduced from one end of the mounting portion 32 to the other end.
Wherein the mounting portion 32 extends away from the barrel 31 by gripping the mounting portion 32 to facilitate manipulation of the fastening sleeve 30.
Further, along the axial direction of the cylinder 31, the included angle between the outer side wall and the inner side wall of the cylinder 31 is θ 1, and the range of θ 1 is 5 degrees to 15 degrees.
When the range of θ 1 is too large, the area where the outer wall of the cylinder 31 and the inner wall of the mounting hole 11 are bonded to each other is reduced, and when no external force acts between the fastening sleeve 30 and the sleeve 10, the fastening sleeve 30 and the sleeve are easily separated from each other. When the range of θ 1 is too small, the barrel 31 is wedged in the radial gap between the motor shaft 102 and the bushing 10, and the required length of the barrel 31 is too long, which results in waste of material of the barrel 31.
Preferably, the included angle between the outer side wall and the inner side wall of the cylinder 31 is 12 degrees along the axial direction of the cylinder 31.
In another embodiment, the mounting portion 32 is integrally formed with the fastening sleeve 30. To reduce the machining process between the mounting portion 32 and the fastening sleeve 30 and to enhance the structural strength between the mounting portion 32 and the fastening sleeve 30. Of course, a separate fixing structure may be adopted between the mounting portion 32 and the fastening sleeve 30, and the mounting portion 32 and the fastening sleeve 30 may be connected by at least one of the following methods: the mounting portion 32 is fixed to the fastening sleeve 30 by adhesion, and the mounting portion 32 is fixed to the fastening sleeve 30 by a fixing bolt.
Wherein the mounting portions 32 are arranged continuously or at intervals in the circumferential direction of the fastening sleeve 30.
In another embodiment, the barrel 31 is an elastomeric material. The cylinder 31 may be deformed while being wedged in the radial gap between the motor shaft 102 and the bushing 10, and may be reset while the cylinder 31 is removed from the radial gap between the motor shaft 103 and the bushing 10.
In the present embodiment, the cylindrical body 31 is made of spring steel. Of course, in other embodiments, the cylinder 31 may be made of metal such as bronze.
In another embodiment, the barrel 31 has an axial length of 5cm to 30 cm.
When the length of the cylinder 31 is too short, the contact surface between the inner wall of the cylinder 31 and the motor shaft 102 is small, which may cause the cylinder 31 to scrape the surface of the motor shaft 102 and damage the smoothness of the surface of the motor shaft 102. When the length of the barrel 31 is too long, the material of the barrel 31 is wasted.
Further, the axial length of the cylinder 31 is 10cm to 28 cm. Preferably, the barrel 31 has an axial length of 15 cm. The axial length of the cylinder 31 can be adjusted according to the axial length of the motor shaft 102 and the axial length of the mounting hole 11, which will not be described herein.
In another embodiment, as shown in fig. 1, 2 and 3, the mounting portion 32 is fixed to an end surface of the boss 10 by a plurality of fastening bolts 40 arranged in the circumferential direction.
The mounting portion 32 is provided with a through hole 34 (the inner side wall of the through hole 34 is provided with an internal thread matching with the fastening bolt 40, or the inner side wall of the through hole 34 does not have an internal thread), the end surface of the shaft sleeve 10 is provided with a threaded hole 13 matching with the fastening bolt 40, and the fastening bolt 40 passes through the through hole 34 and is screwed into the threaded hole 13 to fix the mounting portion 32 on the shaft sleeve 10.
When the fastening bolt 40 is screwed into the threaded hole 13, the fastening bolt 40 can drive the mounting portion 32 to move towards the bushing 10 until the barrel 31 is wedged in the radial gap between the motor shaft and the bushing 10.
Preferably, the number of the fastening bolts 40 is two, and the two fastening bolts 40 are respectively located at opposite sides of the fastening sleeve 30 and connected with the end surface of the shaft sleeve 10 through the mounting portion 32.
In another embodiment, as shown in fig. 1 and 2, the shaft sleeve 10 is provided with a sinking groove 12 at the periphery of the mounting hole 11, the mounting portion 32 is disposed in the sinking groove 12, and the peripheral wall of the mounting portion 32 is attached to the side wall of the sinking groove 12, and the sinking groove 12 can guide the mounting portion 32 to move.
Wherein, the threaded hole 13 is opened at the bottom of the sinking groove 12.
In another embodiment, the diameter of the mounting hole 11 gradually decreases from one end to the other end, and specifically, the diameter of the mounting hole 11 gradually decreases from one end to the other end of the sinking groove 12.
Along the axial direction of the mounting hole 11, the included angle between the side wall of the mounting hole 11 and the axis of the mounting hole 11 is theta 2, and the range of the theta 2 is 5-15 degrees.
Preferably, θ 1 — θ 2. The cylindrical body 31 is wedged in the radial gap between the motor shaft 102 and the bushing 10, and the outer side wall of the cylindrical body 31 and the side wall of the mounting hole 11 are in surface-to-surface contact.
In another embodiment, the avoiding groove extends along a bus of the fastening sleeve or is oblique to the bus of the fastening sleeve.
As shown in fig. 4, the avoiding groove 33 is opened at the peripheral edges thereof at both ends of the fastening sleeve 30. When the fastening sleeve 30 is wedged in the radial gap between the motor shaft and the shaft sleeve 10, the two sides of the avoiding groove 33 move in opposite directions, and the inner diameter of the shaft hole 35 is reduced until the inner wall of the shaft hole 35 is attached to the motor shaft 102.
In another embodiment, as shown in fig. 5, the peripheral edge of the avoiding groove 33 is open at one end of the cylinder 31 facing away from the mounting portion 32, and the number of the avoiding grooves 33 may be plural.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.
Claims (10)
1. A load apparatus for testing a load of an electric machine, comprising:
the shaft sleeve is provided with an axially through mounting hole;
the fan blades are fixedly distributed on the periphery of the shaft sleeve;
the side wall of the fastening sleeve is provided with an avoiding groove allowing the fastening sleeve to be folded and deformed, the fastening sleeve is detachably inserted into the mounting hole, the load device is mounted on a motor shaft of a motor to be tested through the fastening sleeve in a test state, and the fastening sleeve is wedged in a radial gap between the motor shaft and the shaft sleeve.
2. The load device for testing loads of electric motors of claim 1, wherein the fastening sleeve comprises a cylindrical body and a mounting portion at one axial end of the cylindrical body, and the wall thickness of the cylindrical body becomes gradually thinner from one end of the mounting portion to the other end of the mounting portion.
3. The load device for testing the motor load according to claim 2, wherein an included angle between the outer side wall and the inner side wall of the cylinder in the axial direction of the cylinder is θ 1, and θ 1 ranges from 5 degrees to 15 degrees.
4. The load device for testing a load of an electric motor according to claim 1, wherein the aperture of the mounting hole is gradually reduced from one end to the other end; along the axial direction of the mounting hole, the included angle between the side wall of the mounting hole and the axis of the mounting hole is theta 2, and the range of the theta 2 is 5-15 degrees.
5. The load device for testing loads of electric motors of claim 1, wherein said avoidance slot extends in the direction of a bus of said fastening sleeve or is oblique to a bus of said fastening sleeve.
6. The load device for testing motor load according to claim 2, wherein an integral structure or a split fixing structure is adopted between the mounting part and the fastening sleeve; the mounting portions are arranged continuously or at intervals in the circumferential direction of the fastening sleeve.
7. The load device of claim 2, wherein the cylinder is an elastomeric material.
8. The load device for testing motor load according to claim 2, wherein the axial length of said cylinder is 5cm to 30 cm.
9. The load device for testing a load of an electric motor according to claim 2, wherein the mounting portion is fixed to an end surface of the boss by a plurality of fastening bolts arranged in a circumferential direction.
10. The load device for testing motor load according to claim 2, wherein the shaft sleeve is provided with a sinking groove located at the periphery of the mounting hole, the mounting portion is arranged in the sinking groove, and the peripheral wall of the mounting portion is attached to the side wall of the sinking groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020232699.5U CN212111695U (en) | 2020-02-28 | 2020-02-28 | Load device for testing motor load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020232699.5U CN212111695U (en) | 2020-02-28 | 2020-02-28 | Load device for testing motor load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212111695U true CN212111695U (en) | 2020-12-08 |
Family
ID=73632531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020232699.5U Active CN212111695U (en) | 2020-02-28 | 2020-02-28 | Load device for testing motor load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212111695U (en) |
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2020
- 2020-02-28 CN CN202020232699.5U patent/CN212111695U/en active Active
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