Motor testing mechanism with speed reducer shell
By setting up the connecting shaft and end bearings on the motor test platform and setting up an oil seal on the motor sealing plate, the problem of poor stability of the connection structure between the motor output shaft and the dynamometer power shaft is solved, and the testing accuracy is significantly improved.
Patent Information
- Application Number
- CN202421494804.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-06-27
AI Technical Summary
When the existing motor test platform connects the motor output shaft and the dynamometer power shaft, the structural stability is poor and is easily affected by the vibration of the dynamometer, resulting in low testing accuracy.
A motor testing mechanism with a reducer housing is designed. By setting up a connecting shaft to connect the motor output shaft and the power shaft of the dynamometer, and end bearings and oil seals are installed at both ends of the connecting shaft to ensure stability at the connection and avoid lubricating oil spill.
It effectively improves the stability at the connection between the motor output shaft and the dynamometer power shaft, reduces the impact of dynamometer vibration on the test results, and improves the test accuracy.
Smart Images
Figure CN223006272U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of motor detection, and particularly relates to a motor testing mechanism with a reducer housing. Background Art
[0002] The motor reducer integrated machine is a new type of product that integrates a motor and a reducer. Through the ingenious design of some structures of the reducer and the motor, some components are highly modular and universal, providing a product with high performance and more reasonable structural layout. In the existing common motor testing platform, a dynamometer, a sensor, and a motor are arranged in sequence from left to right, and the bottom is supported by a cast iron base. It can mainly test one or more of the power, torque, and speed of the motor.
[0003] When testing a motor with a reducer housing, to ensure the accuracy of the test, it is necessary to remove the reducer components in the reducer housing and connect the power shaft on the dynamometer to the motor output shaft. However, after removing the relevant reducer components and directly connecting the motor output shaft to the power shaft of the dynamometer, during the test process of the motor output shaft, the accuracy of the test results is easily affected by the vibration of the dynamometer. Therefore, how to ensure the structural stability of the connection between the power shaft and the motor output shaft during connection is an urgent problem to be solved. Summary of the Invention
[0004] Aiming at the above deficiencies existing in the prior art, the purpose of the utility model is to provide a motor testing mechanism with a reducer housing, which solves the problem that the connection structure between the motor output shaft and the power shaft of the dynamometer is poorly stable during the motor test in the existing motor reducer integrated machine, affecting the test accuracy.
[0005] To solve the above technical problems, the utility model adopts the following technical solutions:
[0006] A motor testing mechanism with a reducer housing, comprising an outer housing and a test bench located on one side of the outer housing. A dynamometer is fixedly installed on the test bench. Inside the outer housing, there are a motor chamber and a reducer chamber. On one side of the motor chamber, there is a motor sealing plate for sealing the motor chamber. At the side end of the reducer chamber, there is a rear end cover and a shaft hole sealing plate for sealing the reducer chamber. Inside the motor chamber, there is a motor output shaft. A support base is detachably connected under the outer housing. A connecting shaft is sleeved and fixed on the motor output shaft. The outer end of the connecting shaft extends outside the motor sealing plate and is spline-connected to the transmission shaft on the dynamometer. At both the left and right ends of the connecting shaft, an end bearing is sleeved, and the center lines of the two end bearings overlap. An end oil seal is sleeved on the connecting shaft, and the connecting shaft is rotationally and sealingly fitted with the motor sealing plate through the end oil seal. In this way, by setting a connecting shaft to connect the motor output shaft and the power shaft of the dynamometer, and sleeving end bearings at both ends of the connecting shaft, the two end bearings are located at the joints of the connecting shaft and the motor output shaft, and the connecting shaft and the transmission shaft, thus effectively ensuring the stability of the joints and avoiding affecting the test accuracy due to the vibration of the dynamometer. The connecting shaft is spline-connected to the motor output shaft and the transmission shaft, and the connection structure is firm. The end oil seal provided on the connecting shaft enables the connecting shaft to be sealingly fitted with the motor sealing plate, avoiding the overflow of the lubricating oil in the oil chamber of the motor chamber. The support base provided under the outer housing can support the motor housing and reduce the vibration during the test, further improving the test accuracy.
[0007] Further, outside the motor sealing plate, there is a bench connecting plate fixedly connected to it. In the middle of the bench connecting plate, there is a shaft hole, and the end of the transmission shaft of the dynamometer is sleeved in this shaft hole. At one end of the connecting shaft close to the transmission shaft, there is an external spline. The transmission shaft is a double-headed spline shaft, and at one end of the transmission shaft and the connecting shaft, there is an internal spline that is spline-mated with the external spline on the connecting shaft. In this way, after the set bench connecting plate is connected and fixed to the motor sealing plate, it is convenient to fix the bench. The transmission shaft and the connecting shaft are spline-connected, and the connection structure is firm.
[0008] Further, in the motor chamber, there is also an oil pipeline. On the oil pipeline, there are oil injection holes corresponding to the two end bearings one by one. In this way, after setting the oil injection holes corresponding to the end bearings one by one on the oil pipeline, the two end bearings can be lubricated respectively.
[0009] Further, an oil passage hole corresponding to the oil passage pipeline is provided on the motor sealing plate, and an oil guide pipe is provided at the outer end of the oil passage hole. One end of the oil guide pipe is hermetically connected to the oil passage hole, and the other end passes through the rear end cover and extends into the motor chamber to introduce lubricating oil into the motor output shaft. In this way, after the oil passage hole is provided on the motor sealing plate and the oil guide pipe is connected to the oil passage hole and corresponds to the motor output shaft, the lubrication path of the lubricating oil passage during the motor operation process can be simulated, so that the test condition is the same as the motor operation condition, and the accuracy of the test result can be effectively guaranteed.
[0010] Further, a vent hole is also provided on the motor sealing plate, and the vent hole is communicated with the oil chamber in the motor chamber. In this way, the air can be discharged after the oil chamber is connected through the vent hole provided.
[0011] Further, a positioning shaft shoulder is provided on one side of the connecting shaft close to the external spline. An assembly hole coaxial with the connecting shaft is provided on the motor sealing plate, and the positioning shaft shoulder of the connecting shaft is sleeved in the assembly hole and is in interference fit with the assembly hole. In this way, after the positioning shaft shoulder is provided on the connecting shaft and is in interference fit with the motor sealing plate, the stability of the assembly of the connecting shaft and the motor sealing plate can be effectively ensured.
[0012] Further, a second assembly hole matching the motor output shaft is provided on the side of the connecting shaft opposite to the motor output shaft, and an internal spline matching the spline of the motor output shaft is provided in the second assembly hole. In this way, the connecting shaft and the motor output shaft are also connected by splines, the connection structure is stable, and the internal spline is arranged in the middle position, so that the connection length between the motor output shaft and the connecting shaft is longer and the connection structure is more stable. Description of the Drawings
[0013] Figure 1 It is a schematic side structure diagram of the motor test mechanism in the embodiment;
[0014] Figure 2 It is Figure 1 The schematic sectional structure diagram of A-A in;
[0015] Figure 3 It is a schematic three-dimensional structure diagram of the motor test mechanism in the embodiment;
[0016] Figure 4 It is a schematic rear structure diagram of the motor test structure in the embodiment. Detailed Description of the Invention
[0017] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the accompanying drawings here can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.
[0018] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the inventive product is normally placed. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0019] Such as Figures 1 - 4As shown in the figure, the motor test mechanism with a reducer housing provided in this embodiment includes an outer housing 1 and a test bench on one side of the outer housing 1. A dynamometer is fixedly installed on the test bench. An electric motor chamber 11 and a reducer chamber are provided in the outer housing 1. An electric motor sealing plate 2 for sealing the electric motor chamber 11 is provided on one side of the electric motor chamber 11. A rear end cover 14 and a shaft hole sealing plate 15 for sealing the reducer chamber are provided at the side end of the reducer chamber. An electric motor output shaft 4 is provided in the electric motor chamber 11. A support base 8 is detachably connected to the lower part of the outer housing 1. A connecting shaft 5 is sleeved and fixed on the electric motor output shaft 4. The outer end of the connecting shaft 5 extends outside the electric motor sealing plate 2 and is spline-connected to a transmission shaft 6 on the dynamometer. An end bearing 7 is sleeved on both the left and right ends of the connecting shaft 5. The center lines of the two end bearings 7 overlap, and the end bearing near the electric motor output shaft 4 is positioned by fitting with the shaft diameter of the electric motor rotor. An end oil seal is sleeved on the connecting shaft 5. The connecting shaft 5 is rotationally and sealingly fitted with the electric motor sealing plate 2 through the end oil seal. In this way, by providing a connecting shaft 5 to connect the electric motor output shaft 4 and the power shaft of the dynamometer, and after sleeving end bearings 7 on both ends of the connecting shaft 5, the two end bearings 7 are located at the joints of the connecting shaft 5 and the electric motor output shaft 4, and the connecting shaft 5 and the transmission shaft 6, so as to effectively ensure the stability of the joints and avoid affecting the test accuracy due to the vibration of the dynamometer. The connecting shaft 5 is spline-connected with the electric motor output shaft 4 and the transmission shaft 6, and the connection structure is firm. The end oil seal provided on the connecting shaft 5 can make the connecting shaft 5 and the electric motor sealing plate 2 be sealingly fitted, and avoid the lubricating oil in the oil chamber of the electric motor chamber 11 from overflowing. The support base 8 provided under the outer housing 1 can support the electric motor housing and reduce the vibration during the test, further improving the test accuracy.
[0020] Specifically, the support base 8 in this embodiment includes an L-shaped mounting plate. The L-shaped mounting plate is fixedly connected to the outer housing 1 through fasteners. A support column fixedly connected to it is provided at the lower end of the L-shaped mounting plate. An installation plate with positioning holes around is provided at the lower end of the support column. The shaft hole sealing plate in this embodiment is used to block the half shaft hole on the outer housing and is V-shaped. The end bearing 7 located in the electric motor chamber is a common bearing for the connecting shaft and the electric motor output shaft 4, which can greatly save the assembly space.
[0021] Further, a bench connecting plate 3 fixedly connected to the outer side of the motor sealing plate 2 is provided. A shaft hole is provided in the middle of the bench connecting plate 3, and the end of the transmission shaft 6 of the dynamometer is sleeved in the shaft hole. An external spline is provided at one end of the connecting shaft 5 close to the transmission shaft 6. The transmission shaft 6 is a double-headed spline shaft, and an internal spline that is spline-mated with the external spline on the connecting shaft 5 is provided at one end of the transmission shaft 6 and the connecting shaft 5. In this way, after the bench connecting plate 3 is fixedly connected to the motor sealing plate 2, it is convenient to fix the bench. The transmission shaft 6 and the connecting shaft 5 are connected by splines, and the connection structure is stable.
[0022] Further, an oil passage pipeline 12 is also provided in the motor chamber 11, and oil injection holes 13 corresponding to the two end bearings 7 are provided on the oil passage pipeline 12. In this way, after the oil injection holes 13 corresponding to the end bearings 7 are provided on the oil passage pipeline 12, the two end bearings 7 can be lubricated respectively.
[0023] Further, an oil passage hole 21 corresponding to the oil passage pipeline 12 is provided on the motor sealing plate 2. An oil guide pipe 22 is provided at the outer end of the oil passage hole 21. One end of the oil guide pipe 22 is hermetically connected to the oil passage hole 21, and the other end passes through the rear end cover 14 and extends into the motor chamber 11 to introduce lubricating oil into the motor output shaft 4. In this way, after the oil passage hole 21 is provided on the motor sealing plate 2 and the oil guide pipe 22 is connected to the oil passage hole 21 and corresponds to the motor output shaft 4, the lubrication path of the lubricating oil channel during the motor operation process can be simulated, so that the test condition is the same as the motor operation condition, and the accuracy of the test result can be effectively guaranteed.
[0024] Further, two vent holes 23 arranged at intervals are provided on the upper end face of the motor sealing plate 2. The vent holes 23 are communicated with the oil chamber in the motor chamber 11 and are arranged vertically. In this way, the vent holes 23 provided can discharge air after the oil chamber is connected.
[0025] Further, a positioning shaft shoulder is provided on one side of the connecting shaft 5 close to the external spline. An assembly hole coaxial with the connecting shaft 5 is provided on the motor sealing plate 2. The positioning shaft shoulder of the connecting shaft 5 is sleeved in the assembly hole and is in interference fit with the assembly hole. In this way, after the positioning shaft shoulder is provided on the connecting shaft 5 and is in interference fit with the motor sealing plate 2, the stability of the assembly of the connecting shaft 5 and the motor sealing plate 2 can be effectively ensured.
[0026] Further, a second assembly hole that cooperates with the motor output shaft 4 is provided on the side of the connecting shaft 5 opposite to the motor output shaft 4. An internal spline that is spline-mated with the motor output shaft 4 is provided in the second assembly hole. In this way, the connecting shaft 5 and the motor output shaft 4 are also connected by splines, and the connection structure is stable. Moreover, the internal spline is arranged at the middle position, so that there is a longer connection length between the motor output shaft 4 and the connecting shaft 5, and the connection structure is more stable.
[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than limiting them. Those of ordinary skill in the art should understand that any modifications or equivalent replacements made to the technical solutions of the present utility model without departing from the purpose and scope of the technical solutions shall be covered within the scope of the claims of the present utility model.
Claims
1. A motor test mechanism with a reducer housing, comprising an outer shell and a test bench located on one side of the outer shell, a dynamometer fixedly mounted on the test bench; a motor chamber and a reducer chamber are arranged in the outer shell, a motor sealing plate for sealing the motor chamber is arranged on one side of the motor chamber, a rear end cover and an axial hole sealing plate for sealing the reducer chamber are arranged at the side end of the reducer chamber, a motor output shaft is arranged in the motor chamber, and the invention is characterized in that: A support seat is detachably connected under the outer shell body, and a connecting shaft is sleeved and fixed on the motor output shaft. The outer end of the connecting shaft extends out of the motor sealing plate and is splined to the transmission shaft on the dynamometer. An end bearing is sleeved on both ends of the connecting shaft, and the center lines of the two end bearings overlap. An end oil seal is sleeved on the connecting shaft, and the connecting shaft is rotatably sealed with the motor sealing plate through the end oil seal.
2. The motor testing mechanism with a reducer housing according to claim 1, characterized in that: A bench connecting plate fixedly connected to the motor sealing plate is provided on the outside of the motor sealing plate, and an axial hole is provided in the middle of the bench connecting plate, and the end of the transmission shaft of the dynamometer is sleeved in the axial hole; an external spline is provided at one end of the connecting shaft close to the transmission shaft, and the transmission shaft is a double-headed spline shaft, and an internal spline that cooperates with the external spline on the connecting shaft is provided at one end of the transmission shaft and the connecting shaft.
3. The motor testing mechanism with a reducer housing according to claim 1 or 2, characterized in that: An oil channel is also provided in the motor chamber, and oil injection holes corresponding to the bearings at both ends are provided on the oil channel.
4. The motor testing mechanism with a reducer housing according to claim 3, characterized in that: An oil channel hole corresponding to the oil channel pipeline is provided on the motor sealing plate, and an oil guide pipe is provided at the outer end of the oil channel hole, one end of which is sealed and connected to the oil channel hole, and the other end passes through the rear end cover and extends into the motor chamber to introduce lubricating oil into the motor output shaft.
5. The motor testing mechanism with a reducer housing according to claim 4, characterized in that: A vent hole is also provided on the motor sealing plate, and the vent hole is communicated with the oil cavity in the motor cavity.
6. The motor testing mechanism with a reducer housing according to claim 2, 4 or 5, characterized in that: The connecting shaft has a positioning shoulder on one side close to the external spline, and a mounting hole coaxial with the connecting shaft is provided on the motor sealing plate. The positioning shoulder of the connecting shaft is sleeved in the mounting hole and matched with the stop between the mounting holes.
7. The motor testing mechanism with a reducer housing according to claim 6, characterized in that: A second assembly hole matched with the motor output shaft is provided on a side of the connecting shaft opposite to the motor output shaft, and an internal spline matched with the motor output shaft spline is provided in the second assembly hole.