JP6901319B2 - Bench test equipment - Google Patents

Description

The present invention relates to, for example, a bench test device for testing automobile parts such as transmissions and differential gears.

This type of bench test apparatus is known, for example, in Patent Document 1. This is provided with a drive motor simulating an automobile engine and a test device such as a torque meter having a connecting shaft connected to the output shaft of the drive motor via a joint at one end, and is provided at the other end of the test device. , Transmissions, differential gears, and other automobile parts (hereinafter referred to as "specimens") are connected and various tests are performed on the specimens. Specifically, for example, 1) when simulating the engine speed, the engine speed is controlled so as to be within a predetermined range (range of 0 to 8000 rpm), and 2) the engine speed. When simulating torque, the torque is controlled to be a constant value within a predetermined range (range of 0 to 1000 Nm), and 3) mechanical inertia (3) when simulating vehicle weight. 0.5 to 5 kg ・ m ² ) is adjusted. In this case, it is desired that the bench test apparatus can appropriately change various test parameters such as rotation speed, torque, and inertia according to the test purpose for which the bench test apparatus is to be used.

Therefore, an induction motor that can take a wide range of constant power is used so that tests for different purposes can be performed, or the drive motor is equipped with a gear device having a tooth speed ratio switching mechanism to switch the characteristics of the connecting shaft. It is conceivable to use it. Further, regarding the inertia, it is conceivable to provide an inertia adjustment mechanism to adjust the inertia mechanically, or to switch the inertia in a simulated manner by controlling the electric inertia. However, when using an induction motor, if the model of the drive motor is selected with priority given to torque, the inertia increases, but if the model is selected with priority given to inertia, the required torque cannot be obtained. On the other hand, when the characteristics of the connecting shaft are switched by the gear device, if the gear device is designed to decelerate, the torque can be secured, but the test at high speed rotation cannot be supported, but the speed is increased by the gear device. If designed, it can handle high-speed rotation tests, but it cannot secure the required torque. Further, regarding the inertia, there is a restriction that, for example, even if an inertia adjustment mechanism is provided, an inertia equal to or less than the inertia of the drive motor cannot be obtained. As described above, the conventional bench test apparatus cannot correspond to a plurality of different test purposes, and a drive motor is selected for each test purpose and manufactured for that purpose.

Japanese Unexamined Patent Publication No. 2015-184258

In view of the above points, it is an object of the present invention to provide a bench test apparatus capable of performing a plurality of tests for different purposes in a single manner by appropriately changing various test parameters such as rotation speed, torque and inertia. To do.

In order to solve the above problems, the present invention includes a drive motor and a test device having a connecting shaft at one end, which is connected to the output shaft of the drive motor via a joint, and is connected to the other end of the test device. In the bench test device that tests the specimen, the direction in which the output shaft and the connecting shaft are aligned concentrically is the X-axis direction, and the direction orthogonal to the X-axis direction in the same plane is the Y-axis direction. Multiple drive motors with different characteristics are provided with intervals in the Y-axis direction so that the axes are parallel to the X-axis to form a motor unit, and the motor unit is integrally moved relative to the test equipment in the Y-axis direction. It is further provided with a moving means for allowing the output shaft of any one drive motor to be freely connected to the connecting shaft of the test equipment via a joint.

According to the present invention, when performing a test for a predetermined purpose on a specimen, the motor unit is integrally moved relative to the test equipment in the Y-axis direction by a moving means, and the output shaft of any one drive motor is used. Is connected to the connecting shaft of the test equipment via a joint. Then, when switching to a drive motor having different characteristics in order to perform a test for another purpose, after disconnecting the output shaft and the connecting shaft of the drive motor, the motor unit is integrated with the test equipment by a moving means. If the output shafts of other drive motors are connected to the connecting shafts of the test equipment via joints by moving them relative to the Y-axis direction, various test parameters such as rotation speed, torque and inertia will be applied according to the characteristics of the drive motor. Can be changed as appropriate. As described above, in the present invention, since a plurality of drive motors having different characteristics are provided, a single bench test device can be used for low inertia / high speed rotation / low torque, large inertia / high speed / large torque, or medium inertia / medium inertia. A predetermined target test can be performed on a specimen with a plurality of test parameters (conditions) such as low-speed rotation and large torque.

In the present invention, a fixed base, provided on the fixed base and a movable movable base in the Y-axis direction, a movable base, any of the test equipment which the specimen and the motor unit is connected It is preferable that one of them is installed and a positioning means for positioning the movable base is provided at a position where the output shaft of any one drive motor and the connecting shaft of the test equipment are concentrically aligned. According to this, when switching to a drive motor having different characteristics, it is possible to eliminate the work of centering the output shaft and the connecting shaft, which is advantageous.

In this case, the positioning means engages with a wedge-shaped protrusion provided at an end portion of the movable base in the Y-axis direction and a portion of the fixed base facing the end portion, respectively. It can be composed of recesses. According to this, the movable base is positioned in two directions, the X-axis direction and the Y-axis direction, with respect to the fixed base simply by engaging the wedge-shaped protrusion with the engaging recess. Can be simplified.

The schematic plan view which shows the bench test apparatus of this embodiment in the state which the 1st drive motor is connected. The schematic plan view which shows the bench test apparatus of this embodiment in the state which connected to the 2nd drive motor.

Hereinafter, embodiments of the bench test apparatus TM of the present invention for testing automobile parts such as transmissions and differential gears (hereinafter referred to as “specimen Tb”) will be described with reference to the drawings. In the following, the direction in which the output axis and the connecting axis, which will be described later, are aligned concentrically is the X-axis direction (left-right direction in FIG. 1), and the direction orthogonal to the X-axis direction in the same plane is the Y-axis direction (FIG. 1). 1 in the vertical direction).

With reference to FIGS. 1 and 2, TM is the bench test apparatus of this embodiment. The bench test device TM includes a fixed base 1 having a predetermined area and a movable base 2 installed on the fixed base 1 and having a smaller area than the fixed base 1. On one side of the upper surface of the fixed base 1 (on the left side in FIG. 1), two rail members 3 and 3 extending in the Y-axis direction are laid at intervals in the X-axis direction. Further, although not particularly illustrated and described, a slider that slidably engages with the rail members 3 and 3 is provided at a predetermined position on the lower surface of the movable base 2, and is movable with respect to the fixed base 1 by an actuator (not shown). The base 2 is movable in the Y-axis direction.

A test device 4 having a connecting shaft 41 at one end is fixedly arranged on the other side (right side in FIG. 1) of the upper surface of the fixed base 1. The test device 4 is appropriately selected according to the purpose of the test to be performed by using the bench test device TM, and in the present embodiment, the inertia adjustment mechanism 42, the torque meter 43, and the bearing device 44 are connected in series. Is illustrated. Since known devices are used as these devices, detailed description thereof will be omitted here. Then, the specimen Tb is connected to the other end (right end in FIG. 1) of the test device 4.

A motor unit 5 is provided on the upper surface of the movable base 2. The motor unit 5 has two drive motors 51 and 52 having different characteristics. For example, one drive motor 51 is composed of a synchronous motor, the other drive motor 52 is composed of an induction motor, and each drive motor 51, 52 is controlled by a control unit 53 including a sequencer, a driver, an inverter, and the like. It has become. The both drive motors 51 and 52 are installed on the movable base 2 at intervals in the Y-axis direction so that the output shafts 51a and 52a are parallel to the X-axis. In this case, the movable base 2 having the slider and the rail members 3 and 3 constitute the moving means of the present embodiment that integrally moves the motor unit 5 relative to the test device 4 in the Y-axis direction, and is movable by the moving means. After moving the base 2 in the Y-axis direction, the output shafts 51a and 51b of any one of the drive motors 51 and 52 can be freely connected to the connecting shaft 41 of the test equipment 4 via the joint 6. Since a known joint such as a flexible joint is used as the joint 6, further description thereof will be omitted.

Further, two movable positioning members 7a and 7b are provided at both ends of the movable base 2 in the Y-axis direction with an interval in the X-axis direction, and one movable positioning member 7a and the other movable positioning member 7a in the X-axis direction are provided. The member 7b is located on the same Y-axis. Each of the movable positioning members 7a and 7b has the same shape, and has a support plate portion 71 fixed to the movable base 2 and a wedge-shaped protrusion projecting from the support plate portion 71 toward the outside of the movable base 2. It is composed of a piece 72 (specifically, a triangular columnar member having an isosceles triangular outline in a plan view). Further, fixed positioning members 8a and 8b are provided on the upper surface of the fixed base corresponding to the positions of the projecting pieces 72, respectively. The fixed positioning members 8a and 8b also have the same shape, have a support plate portion 81 erected at a predetermined position of the fixed base 1, and have a support portion 81 facing each projecting piece 72. An engaging recess 82 (specifically, a recess formed with an inclined surface for receiving the member) is formed. Then, when the movable base 2 is moved in one direction in the Y-axis direction, the engaging recesses 82 are engaged with each projecting piece 72, and in this state, the output shaft 51a of one drive motor 51 and the connecting shaft 41 are engaged with each other. It is designed to be concentric. In the present embodiment, each projecting piece 72 and each engaging recess 82 form a positioning means for the movable base 2. Although not particularly illustrated and described, the fixed base 1 is provided with a lock mechanism for restricting the movement of the movable base 2, and one of the output shafts 51a and 52a and the connecting shaft 41 are kept concentrically aligned. I am trying to do it. Further, a determination means such as a micro switch or the like is placed at a predetermined position of the fixed base 1 so that the control unit 53 can determine which of the drive motors 51 and 52 the output shafts 51a and 52a are aligned concentrically with the connecting shaft 41. 9 is provided. The test method of the specimen using the bench test apparatus TM of the present embodiment will be specifically described below.

First, the specimen Tb is prepared, and the specimen Tb is connected to the other end of the test equipment 4. Next, one drive motor 51, 52 having characteristics according to the test purpose to be performed on the specimen Tb is arbitrarily selected from the motor units 5. For example, when one drive motor 51 is selected, the movable base 2 is moved in the Y-axis direction (for example, upward in FIG. 1) with respect to the fixed base 1. Then, each projecting piece 72 of both movable positioning members 7a located in front of the moving direction engages with the engaging recess 82 of both fixed positioning members 8a provided in the fixed base 1, and the movable base is engaged with respect to the fixed base 1. 2 is positioned, and the movable base 2 is fixed by the lock mechanism. In this state, the output shaft 51a and the connecting shaft 41 of one drive motor 51 are aligned concentrically, and in this state, the output shaft 51a and the connecting shaft 41 are connected via the joint 6, and the test preparation is completed. (State shown in FIG. 1). In this case, the control unit 53 can recognize that the output shaft 51a of one of the drive motors 51 is connected to the connecting shaft 41 by the discriminating means 9. Then, a test is performed on the specimen Tb connected to the other end of the test equipment 4 by one drive motor 51 that simulates an automobile engine.

Next, when various test parameters such as rotation speed, torque, and inertia are appropriately changed for the same specimen Tb to perform a test for another purpose, the one having characteristics according to the test purpose drives the other. In the case of the motor 52, after the connection between the output shaft 51a and the connecting shaft 41 is released, the movable base 2 is moved to the other side (downward in FIG. 1) in the Y-axis direction with respect to the fixed base 1. Then, each projecting piece 72 of both movable positioning members 7b engages with the engaging recess 82 of both fixed positioning members 8b, the movable base 2 is positioned with respect to the fixed base 1, and the movable base 2 is fixed by the lock mechanism. Will be done. In this state, the output shaft 52a and the connecting shaft 41 of one of the drive motors 52 are aligned concentrically, and in this state, the output shaft 52a and the connecting shaft 41 are connected via the joint 6, and the test preparation is completed. (State shown in FIG. 2). Then, a test for another purpose is performed on the specimen Tb connected to the other end of the test equipment 4 by another drive motor 52.

According to the above, since the two drive motors 51 and 52 having different characteristics are provided, a single bench test device TM can be used for low inertia / high speed rotation / low torque, large inertia / high speed / large torque, or medium. A plurality of tests for different purposes can be performed on the specimen Tb with a plurality of test parameters (conditions) such as inertia, low-speed rotation, and large torque. In this case, the motor unit 5 has two drive motors 51 and 52, but since the test equipment 4 and the control unit 53 of each drive motor 51 and 52 are common, a plurality of bench test devices are used according to the test purpose. The installation area can be made smaller than when installing.

Further, since the positioning means including the wedge-shaped projecting piece 72 and the engaging recess 82 is provided, the movable base 2 is moved in one direction, and the projecting piece 72 and the engaging recess 82 are simply engaged with each other to form a fixed base. Since the movable base 2 is positioned in two directions, the X-axis direction and the Y-axis direction with respect to 1, the centering of the output shafts 51a and 52a and the connecting shaft 41 when switching to the drive motors 51 and 52 having different characteristics. It is possible to eliminate the work of performing the above work and simplify the switching work of the drive motors 51 and 52. In this case, since the wedge-shaped projecting piece 72 and the engaging recess 82 are provided at two locations with an interval in the X-axis direction, the positional deviation in the θ direction with respect to the axis of the connecting shaft 41 is also corrected.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above, and can be appropriately modified without departing from the technical idea of the present invention. In the above embodiment, two drive motors 51 and 52 having different characteristics constituting the motor unit have been described as an example, but three or more drive motors may be used. Further, in the above embodiment, the motor unit 5 is installed on the movable base 2 as an example, but the test device 4 to which the specimen Tb is connected to the other end is installed on the movable base 2 and the motor unit. 5 may be installed on the fixed base 1. On the other hand, although the movable base 2 is provided with the projecting piece 72 and the fixed base 1 is provided with the engaging recess 82, respectively, the fixed base 1 is provided with the projecting piece 72 and the movable base 2 is provided with the engaging recess 82, respectively. It may be.

Further, in the above embodiment, as a moving means for integrally moving the motor unit 5 with respect to the test device 4 in the Y-axis direction, a movable base 2 having a slider and rail members 3 and 3 are used as an example. However, the present invention is not limited to this, and the form is not limited as long as the motor unit 5 can be moved in the Y-axis direction with straightness. Further, although the positioning means is configured by the wedge-shaped projecting piece 72 and the engaging recess 82 as an example, when the movable base 2 is moved in one direction, the movable base 2 is X with respect to the fixed base 1. The form is not limited as long as it is positioned in two directions, the axial direction and the Y-axis direction.

TM ... Bench test device, 1 ... Fixed base, 2 ... Movable base (components of moving means), 4 ... Test equipment, 41 ... Connecting shaft, 5 ... Motor unit, 51, 52 ... Drive motors with different characteristics, 51a , 52a ... Output shaft, 72 ... Wedge-shaped protrusion, 82 ... Engagement recess, Tb ... Specimen.

Claims (3)

In a bench test device that includes a drive motor and a test device having a connecting shaft at one end that is connected to the output shaft of the drive motor via a joint, and tests a specimen that is connected to the other end of the test device. ,
The direction in which the output axis and the connecting axis are aligned concentrically is the X-axis direction, the direction orthogonal to the X-axis direction in the same plane is the Y-axis direction, and the Y-axis direction so that the output axis is parallel to the X-axis. Multiple drive motors with different characteristics are provided at intervals to form a motor unit.
A moving means for integrally moving the motor unit relative to the test equipment in the Y-axis direction is further provided, and the output shaft of any one drive motor can be freely connected to the connecting shaft of the test equipment via a joint. A featured bench test device. A fixed base and a movable base provided on the fixed base and movable in the Y-axis direction are provided, and either one of the motor unit and the test device to which the specimen is connected is installed on the movable base. The bench test apparatus according to claim 1, further comprising a positioning means for positioning the movable base at a position where the output shaft of any one drive motor and the connecting shaft of the test equipment are concentrically aligned. The positioning means is provided in each of the end portion of the movable base in the Y-axis direction and the portion of the fixed base facing the end portion, and the wedge-shaped projecting piece and the engaging recess in which the projecting piece engages. The bench test apparatus according to claim 2, further comprising:

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