CN212391157U - Dynamometer and motor test device - Google Patents
Dynamometer and motor test device Download PDFInfo
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- CN212391157U CN212391157U CN202020867260.XU CN202020867260U CN212391157U CN 212391157 U CN212391157 U CN 212391157U CN 202020867260 U CN202020867260 U CN 202020867260U CN 212391157 U CN212391157 U CN 212391157U
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Abstract
The utility model discloses a dynamometer, wherein a load motor is directly connected with a tested motor in a centering way, the assembly can be completed only by one-time connection, the influence of a connecting shaft on the neutral and the rotating speed of the tested motor can be eliminated, and the detection range is enlarged; the motor base covers in the load motor periphery, and the rear end cap is fixed in the motor base and keeps away from the one end of load motor input shaft, and torque sensor connects between rear end cap and load motor, avoids setting up torque sensor between two parties, eliminates torque sensor to the influence of being surveyed the motor speed, further enlarges the detection range of being surveyed the motor, and adaptability still promotes. Therefore, the utility model provides a dynamometer's centering nature, adaptability and convenience all promote to some extent. The utility model discloses still disclose a motor test device who contains aforementioned dynamometer machine.
Description
Technical Field
The utility model relates to a detect technical field, in particular to dynamometer machine. The utility model discloses still relate to a motor test device who contains aforementioned dynamometer machine.
Background
The conventional dynamometer includes a tested motor, a load motor and a torque sensor connected between the tested motor and the load motor, referring to fig. 1, the conventional torque sensor includes a sensor housing 01, a connecting shaft 02 and a rotary bearing 03 disposed between the sensor housing 01 and the connecting shaft 02, and both ends of the connecting shaft 02 are respectively connected to a spindle of the tested motor and a spindle of the load motor through couplings.
Based on the mounted position of current torque sensor, lead to current torque sensor to have a lot of defects: firstly, the connecting shaft 02 is respectively connected with the tested motor and the load motor through the couplers, and the centering performance between the tested motor and the load motor is influenced to a certain extent; secondly, most of the existing torque sensors are of a strain gauge induction type, so that the outer diameter of the middle section of the connecting shaft 02 is smaller than the outer diameters of the two ends of the connecting shaft 02, the rigidity of the connecting shaft 02 is influenced, the rotating speed of the tested motor is influenced by the rigidity of the connecting shaft 02, and the adaptability is low; thirdly, the rotary bearing 03 is arranged in the middle, the rotating speed of the tested motor is limited by the limit rotating speed of the rotary bearing 03, the tested motor cannot adapt to the tested motor with higher rotating speed, and the adaptability is further reduced; fourthly, the existing torque sensor has more parts for installation, needs to be connected in a centering way twice, and has more complex structure and inconvenient operation.
Therefore, how to optimize the existing dynamometer to improve the centering property, adaptability and convenience of the dynamometer leads the technical problem to be solved by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a dynamometer, in which a load motor is directly connected to a tested motor in a centering manner, the assembly is convenient, and the influence of a connecting shaft on the neutral and the rotating speed of the tested motor can be eliminated; the torque sensor is connected between the load motor and the rear end cover, so that the influence on the rotating speed of the detected motor is eliminated, the detection range is wide, and the centering performance, the adaptability and the convenience are improved. Another object of the utility model is to provide a motor test device who contains dynamometer machine adopts gliding mode to remove the dynamometer machine, and it is more convenient to operate.
The specific scheme is as follows:
the utility model provides a dynamometer, include:
the load motor is used for being connected with the tested motor pair;
the motor base covers the periphery of the load motor and supports the load motor to rotate around the axis of the load motor;
the rear end cover is fixed at one end of the motor base, which is far away from the input shaft of the load motor;
and the torque sensor is connected between the rear end cover and the load motor and is used for detecting the input torque of the load motor.
Preferably, the load motor is fixedly connected with the torque sensor, and the rear end cover is fixedly connected with the torque sensor.
Preferably, one of the load motor and the rear end cover is fixedly connected with the torque sensor, and the other one is connected with the torque sensor in a sliding manner in the axial direction of the load motor.
Preferably, the load motor is fixedly connected with the torque sensor, and the torque sensor is connected with the rear end cover in an upward sliding manner on the load motor.
Preferably, the torque sensor is fixedly connected with one of the load motor and the rear end cover through threaded connection; the torque sensor is slidably connected to one of the load motor and the rear end cap by a bayonet connection.
Preferably, the device further comprises a tension and pressure sensor arranged between the shell and the rear end cover of the load motor and used for detecting the acting force of the load motor.
Preferably, the motor base further comprises a set of support bearings arranged between the motor base and the load motor and used for separating the load motor from the motor base.
Preferably, the motor base further comprises a butting sleeve and a butting spring, and the motor base comprises a rear baffle fixedly connected with the rear end cover and a front baffle opposite to the rear baffle; the support bearing comprises a rear bearing arranged close to the rear end cover and a front bearing abutted against the front baffle; the abutting sleeve is sleeved on the periphery of the load motor, and the first end of the abutting sleeve abuts against the rear bearing; the abutting spring abuts between the second end of the abutting sleeve and the rear baffle; the inner walls of the two ends of the motor base are provided with a front stop ring and a rear stop ring which are correspondingly abutted against the front bearing and the rear bearing respectively.
Preferably, the front bearing and the rear bearing are both angular contact ball bearings.
The utility model also provides a motor test device, including above-mentioned arbitrary item dynamometer machine and workstation, be equipped with between dynamometer machine and the workstation and mutually support the dynamometer machine with the guide along the gliding slider of workstation and slide rail.
Compared with the existing dynamometer, the input shaft of the load motor in the utility model can be directly connected with the tested motor without a torque sensor, thereby eliminating the influence of the connecting shaft on neutrality and the influence of the rigidity of the connecting shaft on the rotating speed of the tested motor, improving the neutrality between the load motor and the tested motor, effectively enlarging the detection range and improving the adaptability; the load motor is directly connected with the motor to be tested, and the assembly can be completed only by one-time connection, so that the operation is more convenient; in addition, the torque sensor is directly connected with the load motor, so that the centered arrangement is avoided, the influence of the torque sensor on the rotating speed of the tested motor is eliminated, the detection range of the dynamometer is further expanded, and the adaptability is further improved. Therefore, the utility model provides a dynamometer's centering nature, adaptability and convenience all promote to some extent.
The utility model provides a motor test device utilizes slider and the slide rail guide dynamometer machine of mutually supporting to slide along the workstation, avoids manual transport dynamometer platform, and working strength reduces, and it is more convenient to operate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a cross-sectional view of a prior art torque sensor;
fig. 2 is a structural diagram of a motor testing apparatus according to an embodiment of the present invention;
fig. 3 is a structural diagram of a dynamometer provided in an embodiment of the present invention;
fig. 4 is a cross-sectional view of a dynamometer provided by an embodiment of the present invention.
The reference numbers are as follows:
a sensor housing 01, a connecting shaft 02 and a slewing bearing 03;
the device comprises a tested motor 1, a load motor 2, a motor base 3, a torque sensor 4, a rear end cover 5, a front bearing 61, a rear bearing 62, an abutting sleeve 7, an abutting spring 8 and a workbench 9;
a slider 21;
a front baffle 31 and a rear baffle 32;
a slide rail 91.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 2 to 4, fig. 2 is a structural diagram of a motor testing apparatus according to an embodiment of the present invention; fig. 3 is a structural diagram of a dynamometer provided in an embodiment of the present invention; fig. 4 is a cross-sectional view of a dynamometer provided by an embodiment of the present invention.
The embodiment of the utility model discloses dynamometer machine, including load motor 2, motor cabinet 3 and torque sensor 4, torque sensor 4's structure and theory of operation specifically can refer to prior art.
The motor base 3 covers the periphery of the load motor 2, and the motor base and the load motor are coaxially arranged, so that the motor base 3 supports the load motor 2 to rotate around the axis of the motor base. It should be noted that the motor base 3 and the housing of the load motor 2 are always kept in non-direct contact, so as to reduce the friction between the motor base 3 and the load motor 2.
The utility model discloses still including a set of support bearing who locates between motor cabinet 3 and the load motor 2, support bearing is used for supporting load motor 2 to separate load motor 2 and motor cabinet 3. It is specifically noted that the support bearings provide only restraint and do not swivel.
The support bearing comprises a front bearing 61 and a rear bearing 62, the front bearing 61 is arranged at one end of the load motor 2 close to the input shaft, and the rear bearing 62 is arranged at one end of the motor base 3 close to the rear end cover 5. The front bearing 61 and the rear bearing 62 are both angular contact ball bearings, and may be needle bearings, ball bearings, air bearings, magnetic suspension bearings, etc., without limitation.
The end of the motor base 3 is fixedly provided with a rear end cover 5, and the rear end cover 5 is fixed at one end of the motor base 3 far away from the input shaft of the load motor 2.
The torque sensor 4 is connected between the rear end cover 5 and the load motor 2, and is used for detecting the input torque of the load motor 2. The torque sensor 4 can keep the load motor 2 as a whole stationary, while the input shaft of the load motor 2 can still be rotated.
The output torque of the tested motor 1 is transmitted to the torque sensor 4 through the input shaft, the rotor and the stator of the load motor 2 in sequence. When the tested motor 1 rotates at a specified rotating speed, the load motor 2 is in a power-off state, and the torque measured by the torque sensor 4 is zero, so that the tested motor 1 realizes no-load operation; when the tested motor 1 rotates at a specified rotating speed, the load motor 2 is in a loading locked-rotor state, and the torque measured by the torque sensor 4 is the same as the locked-rotor torque, so that the tested motor 1 is carried with a load. When the tested motor 1 is tested under the conditions of different rotating directions, constant speed or acceleration and deceleration, the above conditions are still met. The torque measured by the torque sensor 4 is always consistent with the locked-rotor torque regardless of the state of the motor 1 to be measured.
The utility model discloses dynamometer machine can survey the output torque of being surveyed motor 1 under torque sensor 4 is not along with being surveyed the rotatory condition of motor 1. Avoid setting up torque sensor between two parties, eliminate torque sensor 4 and to the influence of being surveyed the motor 1 rotational speed, further enlarge the detection range of dynamometer machine, adaptability further promotes to some extent.
The dynamometer provided by the embodiment of the utility model can also enable the load motor 2 to be directly connected with the tested motor 1, thereby not only eliminating the influence of the connecting shaft on neutrality and improving the neutrality between the load motor 2 and the tested motor 1, but also reducing vibration and noise to a certain extent by improving the neutrality, thereby improving the detection precision and sensitivity of the torque sensor 4; the influence of the rigidity of the connecting shaft on the rotating speed of the tested motor 1 can be eliminated, the detection range is effectively expanded, and the adaptability is improved; in addition, only need once to connect alright make load motor 2 and the realization of being surveyed motor 1 link to each other, the operating procedure reduces by a wide margin, and it is more convenient to operate, and the convenience promotes to some extent naturally.
To sum up, the utility model provides a dynamometer's adaptability, all promote to neutrality and convenience.
In this embodiment, one of the load motor 2 and the rear end cap 5 is fixedly connected to the torque sensor 4, and the other is slidably connected to the torque sensor 4 in the axial direction of the load motor 2, so as to prevent the torque sensor 4 from bearing axial and radial push-pull forces from the electric spindle end of the tested motor 1 during the test.
Specifically, the torque sensor 4 is fixedly connected with one of the load motor 2 and the rear end cover 5 through a threaded connection, and the torque sensor 4 is slidably connected with one of the load motor 2 and the rear end cover 5 through a latch connection. Optionally, the load motor 2 is fixedly connected with the torque sensor 4 through a thread, and the torque sensor 4 is connected with the rear end cover 5 in a sliding manner in the axial direction of the load motor 2 through a bolt. In addition, the central axis of the load motor 2, the central axis of the torque sensor 4 and the central axis of the rear end cover 5 are coincident, that is, the three are coaxially arranged.
The utility model discloses still including the casing of locating load motor 2 and the rear end cap between 5 draw pressure sensor for detect load motor 2 effort, increase and detect the function, adaptability is better. The type of pull pressure sensor can be referred to in particular in the prior art. Of course, detection pieces such as a vibration detection sensor and a temperature detection sensor connected with the load motor 2 can be additionally arranged, so that more detection signals can be conveniently acquired, and the detection function is further expanded.
Of course, load motor 2 also can link firmly with torque sensor 4, and corresponding rear end housing 5 can link firmly with torque sensor 4, and does not influence the realization the utility model discloses a purpose.
In this embodiment, the front end and the rear end of the motor base 3 are respectively provided with a front baffle 31 and a rear baffle 32, and both the front baffle 31 and the rear baffle 32 can be fixedly connected with the motor base 3 in an interference connection or welding manner.
In this embodiment, in order to facilitate the disassembly and assembly of the torque sensor 4, the rear end cap 5 specifically adopts a split structure, the rear end cap 5 includes a rear end sleeve and a rear cover plate, the rear end sleeve includes a cylindrical sleeve and a flange plate disposed at one end of the cylindrical sleeve close to the motor base 3, the outer diameter of the flange plate is greater than the outer diameter of the cylindrical sleeve, and the inner diameter of a central hole of the cylindrical sleeve is greater than the outer diameter of the torque sensor 4. The flange plate is fixedly connected with the motor base 3 through a fastening screw. The rear cover plate is fixed at the tail end of the rear end sleeve through a fastening screw.
The utility model discloses still include butt cover 7 and butt spring 8, butt cover 7 overlaps in load motor 2's periphery, and the centre bore internal diameter of butt cover 7 slightly is greater than the external diameter of the input shaft section of the load motor 2 that butt cover 7 corresponds. The first end of the contact sleeve 7 abuts against the rear bearing 62, and the second end abuts against the contact spring 8. The one end that butt cover 7 was kept away from to butt spring 8 offsets with backplate 32, and butt spring 8 is ordinary cylindrical spring, and butt spring 8 can make support bearing realize looking for automatically under the effect of elastic pretension, realizes higher centering precision, and then promotes the coaxial precision between load motor 2 and the motor cabinet 3. In addition, the abutting spring 8 can also adjust the pretightening force, so that the sensitivity of the torque sensor 4 is improved.
For realizing fixed support bearing, the inner wall of the two ends of the motor base 3 is respectively provided with a front stop ring and a back stop ring, so that the two ends of the front bearing 61 are respectively abutted against the front baffle 31 and the front stop ring, and the two ends of the back bearing 62 are respectively abutted against the back stop ring and the abutment sleeve 7, thereby limiting the axial movement of the support bearing.
The utility model discloses still disclose a motor test device, including above-mentioned dynamometer machine and workstation 9, be equipped with slider 21 and slide rail 91 of mutually supporting between dynamometer machine and the workstation 9, the guide dynamometer machine slides along workstation 9, utilizes the slip mode to remove the dynamometer machine, and the operation degree of difficulty reduces to some extent, and it is more convenient to operate.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A dynamometer, characterized by comprising:
the load motor (2) is used for being connected with the tested motor (1) in a centering way;
the motor base (3) covers the periphery of the load motor (2) and supports the load motor (2) to rotate around the axis of the motor base;
the rear end cover (5) is fixed at one end of the motor base (3) far away from the input shaft of the load motor (2);
and the torque sensor (4) is connected between the rear end cover (5) and the load motor (2) and is used for detecting the input torque of the load motor (2).
2. Dynamometer machine according to claim 1, characterized in that the load motor (2) is secured to the torque sensor (4) and the rear end cover (5) is secured to the torque sensor (4).
3. Dynamometer machine according to claim 1, characterized in that one of said load motor (2) and said rear end cover (5) is secured with said torque sensor (4) and the other is slidingly connected with said torque sensor (4) in the axial direction of said load motor (2).
4. Dynamometer machine according to claim 3, characterized by the fact that the load motor (2) is fixedly connected with the torque sensor (4), the torque sensor (4) being connected with the rear end cover (5) in a sliding manner in the axial direction of the load motor (2).
5. Dynamometer machine according to claim 3, characterized in that the torque sensor (4) is secured with one of the load motor (2) and the rear end cover (5) by a threaded connection; the torque sensor (4) is in sliding connection with one of the load motor (2) and the rear end cover (5) through a bolt connection.
6. Dynamometer machine according to any of claims 2 to 5, characterized by further comprising a tension-pressure sensor arranged between the housing of the load motor (2) and the rear end cover (5) and adapted to detect the force of the load motor (2).
7. Dynamometer machine according to any of claims 2 to 5, characterized by a set of support bearings arranged between the motor mount (3) and the load motor (2) and used for spacing the load motor (2) from the motor mount (3).
8. Dynamometer machine according to claim 7, characterized by further comprising an abutment sleeve (7) and an abutment spring (8), said motor seat (3) comprising a rear baffle (32) solidly connected to said rear end cap (5) and a front baffle (31) opposite to said rear baffle (32); the supporting bearing comprises a rear bearing (62) arranged close to the rear end cover (5) and a front bearing (61) abutted against the front baffle plate (31); the abutting sleeve (7) is sleeved on the periphery of the load motor (2), and the first end of the abutting sleeve abuts against the rear bearing (62); the abutting spring (8) abuts between the second end of the abutting sleeve (7) and the rear baffle (32); the inner walls of the two ends of the motor base (3) are provided with a front stop ring and a back stop ring which are correspondingly abutted against the front bearing (61) and the back bearing (62) respectively.
9. Dynamometer machine according to claim 8, characterized in that the fore bearing (61) and the aft bearing (62) are both angular contact ball bearings.
10. A motor testing apparatus, comprising a dynamometer machine according to any one of claims 1 to 9 and a workbench (9), wherein a slide block (21) and a slide rail (91) are arranged between the dynamometer machine and the workbench (9) and are matched with each other to guide the dynamometer machine to slide along the workbench (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020867260.XU CN212391157U (en) | 2020-05-21 | 2020-05-21 | Dynamometer and motor test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020867260.XU CN212391157U (en) | 2020-05-21 | 2020-05-21 | Dynamometer and motor test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212391157U true CN212391157U (en) | 2021-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020867260.XU Active CN212391157U (en) | 2020-05-21 | 2020-05-21 | Dynamometer and motor test device |
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| Country | Link |
|---|---|
| CN (1) | CN212391157U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115901046A (en) * | 2023-02-15 | 2023-04-04 | 灵翼飞航（天津）科技有限公司 | Multi-load unmanned aerial vehicle engine dynamometer |
-
2020
- 2020-05-21 CN CN202020867260.XU patent/CN212391157U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115901046A (en) * | 2023-02-15 | 2023-04-04 | 灵翼飞航（天津）科技有限公司 | Multi-load unmanned aerial vehicle engine dynamometer |
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