Motor torque measuring device

Abstract

The utility model discloses a motor torque measuring device, which belongs to the technical field of torque measuring devices, and comprises a bottom plate on which a measuring assembly is mounted, a motor mounting frame which is mounted on the bottom plate and on which a slidable movable mounting plate is mounted, a motor to be measured which is mounted on the movable mounting plate, and a plug-in transmission part, the device comprises an inserting shaft and a bearing cylinder. According to the technical key points, the to-be-measured motor is mounted on the movable mounting plate in a suspended manner, so that the axes of the output shafts of the to-be-measured motors with different sizes can be enabled to coincide with the axis of the measuring assembly; and the to-be-measured motor is in transmission connection with the measuring assembly through the plug-in transmission piece, so that transmission connection and disconnection between the to-be-measured motor and the measuring assembly can be realized by sliding the to-be-measured motor, the to-be-measured motor and the measuring assembly are convenient to mount and dismount, and the efficiency of measurement work is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of torque measuring devices, specifically a motor torque measuring device. Background Technology

[0002] Motor torque measurement is the quantification process of the magnitude of a motor's output torque. Torque is a special force that causes an object to rotate; motor torque is the torsional torque output on the motor shaft. Measurement typically utilizes a torque sensor, which is installed on the motor shaft or in the transmission system. When the motor operates and generates torque, components such as strain gauges inside the sensor deform under stress, converting the mechanical torque into an electrical signal, which is then processed to obtain the torque value. Accurate measurement of motor torque is of great significance. It provides crucial data for motor performance evaluation, determining whether the motor meets design specifications; in industrial production, it helps optimize equipment operating parameters, improving production efficiency and product quality; it also aids in motor fault diagnosis, as abnormal torque changes can provide early warnings of potential problems, ensuring stable equipment operation.

[0003] Utility model CN218822890U discloses a motor torque characteristic measuring device, which includes a base and a carrier plate fixedly mounted on one side of the top of the base. A torque sensor is mounted on the top of the carrier plate, an encoder is mounted on one side of the torque sensor, a mounting bracket is mounted on one side of the encoder, a limit groove is formed on one side of the mounting bracket, and a detection motor is fitted in the limit groove. A clamping and fixing component is mounted on one side of the detection motor, and a support structure is mounted on the bottom of the detection motor. In this utility model, turning the crank handle drives the half gear to rotate. The half gear rotates half a revolution, which drives one of the racks to move. The movement of the rack drives the movable frame to move. When the movable frame moves towards the side of the detection motor, it pushes the first rod and the clamping block to move. By clamping the clamping block against the detection motor, the position of the detection motor can be clamped and fixed.

[0004] While the aforementioned device enables rapid mounting and dismounting of the tested motor, the motor is mounted on a support platform. Therefore, when testing motors of different sizes, changes in the external dimensions of the motor can easily cause a corresponding change in the height of its axis. When the position of the motor's output shaft changes, the corresponding axis of the testing structure cannot be adjusted, making effective transmission connection impossible. Furthermore, the aforementioned device does not disclose the connection method between the output shaft of the tested motor and the testing structure; the commonly used method is a coupling connection. However, couplings typically require bolt connections during installation, making disassembly and installation between the tested motor and the testing structure cumbersome. Therefore, to address these issues, a motor torque measuring device is proposed. Utility Model Content

[0005] The technical problem this utility model aims to solve is to provide a motor torque measuring device. In this device, since the motor to be measured is suspended and mounted on a movable mounting plate, it can ensure that the output shaft axis of the motor to be measured of different sizes coincides with the axis of the measuring component, avoiding the situation where the axis misalignment leads to ineffective transmission connection. In addition, since the movable mounting plate can slide back and forth on the motor mounting bracket, and the motor to be measured and the measuring component are connected by a plug-in transmission component, the transmission connection and disconnection between the motor to be measured and the measuring component can be achieved by sliding the motor to be measured, which facilitates its installation and disassembly, improves the efficiency of the measurement work, and solves the technical problems in the comparative technology where the motor fixing measures are prone to changes in the height of its axis position due to changes in the external dimensions of the motor to be tested, resulting in the inability to match the axis position of the test structure, and the transmission connection method of the coupling usually requires bolt connection during installation, which makes the connection between the motor to be tested and the test structure cumbersome during disassembly and installation.

[0006] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0007] A motor torque measuring device includes a base plate on which a measuring component for measuring torque is mounted; a motor mounting bracket mounted on the base plate; a movable mounting plate that can slide back and forth on the bracket; a motor to be measured mounted on the movable mounting plate; and a pluggable transmission component for drivingly connecting the output shaft of the motor to be measured to the measuring component. The pluggable transmission component includes a plug shaft and a receiving cylinder. The plug shaft is fixedly mounted on the output shaft of the motor to be measured, and the receiving cylinder is fixedly mounted on the input shaft of the measuring component. Because the motor to be measured is suspended on the movable mounting plate, it ensures that the output shaft axis of motors of different sizes can coincide with the axis of the measuring component, avoiding axis misalignment that could prevent effective transmission connection. Furthermore, since the movable mounting plate can slide back and forth on the motor mounting bracket, and the motor to be measured and the measuring component are driven by the pluggable transmission component, the transmission connection and disconnection between the motor to be measured and the measuring component can be achieved by sliding the motor to be measured, facilitating installation and disassembly and improving the efficiency of the measurement work.

[0008] In one possible implementation, the plug shaft includes a mounting cylinder with a plug connector fixedly connected to its front end. The plug connector has several transmission ribs arranged in a circumferential array. Based on the above structural scheme, the transmission ribs are used to engage with the plug connector after it is inserted into the receiving cylinder, thereby playing the role of transmitting torque.

[0009] In one possible implementation, the receiving cylinder includes a cylinder body with a slot inside that matches the size of the connector. The slot wall has several transmission grooves arranged in a circumferential array, the size of which corresponds to the transmission ridge. Through the above scheme, the torque can be transmitted by the snap-fit ​​between the transmission groove and the transmission ridge. This type of transmission connection facilitates the disconnection and continuation of torque transmission.

[0010] In one possible implementation, the transmission groove opening is provided with a guide opening that slopes inward, and the front end of the transmission ridge is machined to form a chamfer. This structural form allows the transmission ridge to be smoothly inserted into the transmission groove during plug-in connection.

[0011] In one possible implementation, the movable mounting plate includes a base plate on which a plurality of symmetrically arranged guide rods are fixedly connected. A plurality of guide cylinders are fixedly disposed on the motor mounting bracket. The guide rods pass through the guide cylinders and are slidably connected to them. Through the slidable connection between the guide rods and the guide cylinders, the slidable connection between the base plate and the motor mounting bracket is realized, and the stability of the slidable connection can be ensured, thereby ensuring that the motor under test does not deviate during the push-pull process.

[0012] In one possible implementation, the substrate has centrally located connecting ears on all four sides for bolting the substrate to the motor mounting bracket. During measurement, the motor to be measured can be fixedly installed by bolting the substrate to the motor mounting bracket, preventing it from shaking during the measurement process.

[0013] In one possible implementation, the measuring assembly includes a torque sensor, a bearing support, and a load reducer arranged sequentially. A rotating drive shaft is mounted on the bearing support. One end of the torque sensor is fixedly connected to a receiving cylinder, and the other end is driven to the drive shaft. The shaft end of the load reducer is driven to the drive shaft. In the above structure, the load reducer is used to apply a load to the motor to be measured, while the torque sensor can detect the torque output of the motor to be measured in its working state.

[0014] In summary, this utility model has the following beneficial technical effects:

[0015] The torque measuring device is equipped with a movable mounting plate for mounting the motor to be measured. Since the motor to be measured is suspended on the movable mounting plate, it can ensure that the output shaft axis of the motor to be measured of different sizes can be aligned with the axis of the measuring component, thus avoiding the situation where the axis misalignment leads to ineffective transmission connection.

[0016] Furthermore, since the movable mounting plate can slide back and forth on the motor mounting bracket, and the motor to be measured and the measuring components are connected by a plug-in transmission component, when it is necessary to disassemble the motor to be measured, simply pull the movable mounting plate outward to separate the plug-in shaft and the receiving cylinder to easily remove the motor to be measured from the movable mounting plate. During installation and measurement, simply install the motor to be measured on the movable mounting plate, and then push the movable mounting plate inward to allow the plug-in shaft and the receiving cylinder to engage, thus achieving transmission installation. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the plug-in transmission component of this utility model;

[0021] Figure 4 This is a schematic diagram of the sliding installation structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the measuring component structure of this utility model.

[0023] In the diagram: 1. Base plate; 2. Measuring component; 21. Torque sensor; 22. Bearing support; 23. Load reducer; 3. Motor mounting bracket; 31. Guide cylinder; 4. Movable mounting plate; 41. Base plate; 42. Guide rod; 43. Connecting lug; 5. Motor to be measured; 6. Plug-in transmission component; 61. Plug-in shaft; 611. Mounting cylinder; 612. Plug-in connector; 613. Transmission ridge; 614. Chamfer; 62. Receiving cylinder; 621. Cylinder body; 622. Transmission groove; 623. Guide port. Detailed Implementation

[0024] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0025] like Figure 1 - Figure 2As shown, this embodiment provides a motor torque measuring device, including a base plate 1 on which a measuring component 2 for measuring torque is mounted; a motor mounting bracket 3 mounted on the base plate 1, on which a movable mounting plate 4 that can slide back and forth is mounted; a motor 5 to be measured, mounted on the movable mounting plate 4; and a pluggable transmission component 6 for drivingly connecting the output shaft of the motor 5 to the measuring component 2. The pluggable transmission component 6 includes a plug-in shaft 61 and a receiving cylinder 62. The pluggable shaft 61 is fixedly mounted on the output shaft of the motor 5, and the receiving cylinder 62 is fixedly mounted on the input shaft of the measuring component 2. Since the motor to be measured 5 is suspended on the movable mounting plate 4, it can be ensured that the output shaft axis of the motor to be measured 5 of different sizes can be aligned with the axis of the measuring component 2, avoiding the situation where the axis misalignment will lead to ineffective transmission connection. In addition, since the movable mounting plate 4 can slide back and forth on the motor mounting bracket 3, and the motor to be measured 5 and the measuring component 2 are connected by a plug-in transmission component 6, the transmission connection and disconnection between the motor to be measured and the measuring component 2 can be realized by sliding the motor to be measured 5, which facilitates its installation and disassembly and improves the efficiency of the measurement work.

[0026] The insertion shaft 61 includes a mounting cylinder 611, with a plug connector 612 fixedly connected to its front end. The plug connector 612 has several transmission ribs 613 arranged in a circumferential array. The receiving cylinder 62 includes a cylinder body 621, with a slot inside that matches the size of the plug connector 612. The slot wall has several transmission grooves 622 arranged in a circumferential array, the size of which corresponds to the transmission ribs 613. Through this design, the engagement between the transmission grooves 622 and the transmission ribs 613 facilitates torque transmission. This type of transmission connection allows for easy disconnection and reconnection of torque transmission. Figure 3 As shown.

[0027] To further improve the smoothness of the connection between the insertion shaft 61 and the receiving cylinder 62, a guide opening 623 with an inward slope is provided at the opening of the transmission groove 622, and a chamfer 614 is formed at the front end of the transmission ridge 613. This structural form allows the transmission ridge 613 to smoothly engage with the transmission groove 622 during insertion. Figure 3 As shown.

[0028] like Figure 2 , Figure 4 As shown, the movable mounting plate 4 includes a base plate 41, on which a plurality of symmetrically arranged guide rods 42 are fixedly connected. A plurality of guide cylinders 31 are fixedly installed on the motor mounting frame 3. The guide rods 42 pass through the guide cylinders 31 and are slidably connected to them. Through the slidable connection between the guide rods 42 and the guide cylinders 31, the slidable connection between the base plate 41 and the motor mounting frame 3 is realized, and the stability of the slidable connection is ensured, thereby ensuring that the motor 5 to be measured does not deviate during the push-pull process.

[0029] In addition, the four sides of the substrate 41 are provided with centrally arranged connecting ears 43, which are used to bolt the substrate 41 to the motor mounting bracket 3. During measurement, the substrate 41 and the motor mounting bracket 3 are fixedly connected by bolts to achieve the fixed installation of the motor 5 to be measured, preventing it from shaking during the measurement process.

[0030] The measuring assembly 2 includes a torque sensor 21, a bearing support 22, and a load reducer 23 arranged sequentially. A rotating drive shaft is mounted on the bearing support 22. One end of the torque sensor 21 is fixedly connected to a receiving cylinder 62, and the other end is connected to the drive shaft. The shaft end of the load reducer 23 is also connected to the drive shaft. In this structure, the load reducer 23 applies a load to the motor 5 under test, while the torque sensor 21 detects the torque output of the motor 5 under test during operation. Figure 5 As shown.

[0031] The working principle and usage process of this utility model:

[0032] The torque measuring device is equipped with a movable mounting plate 4 for mounting the motor 5 to be measured. Since the motor 5 to be measured is suspended on the movable mounting plate 4, it can ensure that the output shaft axis of the motor 5 to be measured of different sizes can be aligned with the axis of the measuring component 2, thus avoiding the situation where the axis is offset and the transmission connection cannot be effective.

[0033] Since the movable mounting plate 4 can slide back and forth on the motor mounting bracket 3, and the motor to be measured 5 and the measuring component 2 are connected by a plug-in transmission component 6, when it is necessary to disassemble the motor to be measured 5, simply pull the movable mounting plate 4 to slide it outward, allowing the plug-in shaft 61 and the receiving cylinder 62 to separate, and the motor to be measured 5 can be easily removed from the movable mounting plate 4. During installation and measurement, simply install the motor to be measured 5 on the movable mounting plate 4, and then push the movable mounting plate 4 inward to allow the plug-in shaft 61 and the receiving cylinder 62 to engage, thus achieving transmission installation.

[0034] The insertion shaft 61 includes an installation cylinder 611, with a plug connector 612 fixedly connected to its front end. The plug connector 612 is fixedly provided with a plurality of transmission ribs 613 arranged in a circumferential array. The receiving cylinder 62 includes a cylinder body 621, which has a slot inside that matches the size of the plug connector 612. The slot wall has a plurality of transmission grooves 622 arranged in a circumferential array, the size of which corresponds to the transmission ribs 613. Through the above scheme, the torque can be transmitted by the snap-fit ​​between the transmission grooves 622 and the transmission ribs 613. This transmission connection form can facilitate the disconnection and continuation of torque transmission. In addition, the groove opening of the transmission groove 622 has a guide opening 623 that slopes inward, and the front end of the transmission rib 613 is machined to form a chamfer 614. This structure form can make the transmission rib 613 smoothly snap into the transmission groove 622 during the insertion connection.

[0035] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A motor torque measuring device, characterized in that, include: A base plate (1) on which a measuring component (2) for measuring torque is mounted; The motor mounting bracket (3) is mounted on the base plate (1), and a movable mounting plate (4) that can slide back and forth is mounted on it; The motor to be measured (5) is mounted on the movable mounting plate (4); A pluggable transmission component (6) is used to drive the output shaft of the motor (5) to be measured to the measuring component (2); The plug-in transmission component (6) includes a plug-in shaft (61) and a receiving cylinder (62). The plug-in shaft (61) is fixedly installed on the output shaft of the motor (5) to be measured, and the receiving cylinder (62) is fixedly installed on the input shaft of the measuring component (2).

2. The motor torque measuring device according to claim 1, characterized in that: The plug shaft (61) includes a mounting cylinder (611), with a plug connector (612) fixedly connected to its front end. The plug connector (612) is provided with a plurality of transmission ribs (613) arranged in a circumferential array.

3. The motor torque measuring device according to claim 2, characterized in that: The receiving cylinder (62) includes a cylinder body (621), which has a slot inside that matches the size of the plug (612), and a plurality of transmission grooves (622) arranged in a circular array on the groove wall, the size of which corresponds to the transmission ridge (613).

4. The motor torque measuring device according to claim 3, characterized in that: The transmission groove (622) has an inwardly sloping guide opening (623) at the groove opening, and the front end of the transmission ridge (613) is machined with a chamfer (614).

5. The motor torque measuring device according to claim 1, characterized in that: The movable mounting plate (4) includes a base plate (41) on which a plurality of symmetrically arranged guide rods (42) are fixedly connected; A plurality of guide tubes (31) are fixedly installed on the motor mounting bracket (3), and the guide rod (42) passes through the guide tubes (31) and is slidably connected to them.

6. The motor torque measuring device according to claim 5, characterized in that: The substrate (41) has centrally arranged connecting ears (43) on all four sides, which are used to bolt the substrate (41) to the motor mounting bracket (3).

7. The motor torque measuring device according to claim 1, characterized in that: The measuring component (2) includes a torque sensor (21), a bearing support (22), and a load reducer (23) arranged in sequence; Among them, a rotating drive shaft is installed on the bearing support (22); One end of the torque sensor (21) is fixedly connected to the receiving cylinder (62), and the other end is connected to the drive shaft. The load reducer (23) shaft end is connected to the drive shaft for transmission.

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