JP2009276211A - Coupling device and tester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coupling device of a simple structure with work for its replacement or maintenance facilitated, and to provide a tester that uses this coupling device. <P>SOLUTION: This coupling device has a rotation transmitting shaft and a spacer, which are detachable. In order to together connect a first rotary shaft of a tested body and a second rotary shaft of a load device, one end part side of the transmitting shaft is made connectable to the first rotary shaft, while the other end part side thereof is connected to the second rotary shaft. The transmitting shaft is made extensible so as to correspond to an end part position of the first rotary shaft, the position meeting the size of the tested body, through a movement of at least a part of the transmitting shaft, in a shaft connecting direction that causes the rotary shafts to be together connected. The transmitting shaft together connects the rotary shafts so as to allow the rotary shafts, to integrally rotate around the axis of the two rotary shafts. The spacer allows the transmitting shaft to be put therethrough and is relatively movable, in the connecting direction together with the transmitting shaft. The spacer is rotatable together with the transmitting shaft. This coupling device is used in this tester. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to, for example, a joint device for connecting a rotating shaft of a device under test such as a power train (for example, a transmission, an engine) of a vehicle and a rotating shaft of a load device, and rotation of the rotating shaft of the device under test. The present invention relates to a test apparatus for testing the state of the device under test.

2. Description of the Related Art Conventionally, a test apparatus disclosed in Patent Document 1 below is disclosed as a test apparatus for testing a state of a device under test accompanying rotation of a rotating shaft of the device under test such as a vehicle drive device, for example, generated sound or torque. ing.
In this test apparatus, when a device under test is installed in a semi-anechoic sound chamber as an example of a test chamber and the rotating shaft of the device under test is rotated, for example, a dynamo or the like that applies a load to the rotation of the rotating shaft. The load device is arranged outside the test room.
Further, the rotating shaft of the device under test and the rotating shaft of the load device are connected by a connecting shaft portion, and a part of the connecting shaft portion passes through a wall separating the test chamber from the outside of the test chamber. The connecting shaft portion is configured to be able to expand and contract in the lateral direction so as to connect both rotating shafts so as to adapt to the position of the rotating shaft according to the size of the test object.
In what is shown in the following Patent Document 1, the portion that passes through the wall is a slide shaft, and is configured to be able to connect both rotation shafts in accordance with the position of the rotation shaft according to the size of the test object. .

In Patent Document 2 below, a test object is a vehicle, and front and rear wheels of the vehicle are used instead of the running test road surface of the vehicle, and the front and rear rotating drums that rotate with the rotation of the wheels are used. A test apparatus is disclosed in which a test is performed in an environment close to an actual vehicle traveling environment by applying a load for braking rotation.
In this test apparatus, one of the rotating drums is configured to be movable in the front-rear direction of the vehicle so as to match the wheel base length of the vehicle, which differs depending on the vehicle type. In this case, the rotating shaft of the dynamo and the rotating shaft of one rotating drum are connected via one gear mechanism to apply a load to the one rotating drum, and the rotating shaft of the flywheel and the other rotating drum The rotating shaft of the rotating drum is connected via the other gear mechanism, and the gear mechanism is configured to be movable in the longitudinal direction of the vehicle.
Then, in order to make the gear mechanism movable in the longitudinal direction of the vehicle, the rotation shafts of both gear mechanisms arranged in a direction orthogonal to the rotation shaft of each rotary drum are connected to each other by a telescopic gear coupling (coupling device). ) Are connected so as to rotate together. In addition, the rotary shaft of the flywheel and the rotary shaft of the other gear mechanism are further connected so as to rotate integrally with a telescopic gear coupling.

JP 2006-3123 A JP-A-7-120355

  In the test apparatus described in Patent Document 1, since the portion of the connecting shaft portion that passes through the wall is the slide shaft, there is a problem that it is difficult to perform the maintenance work for the slide shaft. In particular, when a spline shaft is used as a slide shaft, it is necessary to replace the spline groove when the spline groove is deformed or the shaft itself is twisted. However, in this test apparatus, since the slide shaft is disposed in a portion that passes through the wall, maintenance work including replacement work is difficult.

The test apparatus described in Patent Document 2 has a configuration in which the rotating shafts of both gear mechanisms are connected by a gear coupling, and the rotating shaft of the flywheel and the rotating shaft of the other gear mechanism are connected by a gear coupling. Therefore, since the telescopic shaft mechanisms are provided at two locations, the structure is complicated accordingly, and there is a problem that the maintenance work is troublesome.
The problems as described above are not limited to test apparatuses, and are problems that are pointed out in general joint apparatuses that connect different rotating shafts with different separation distances so as to rotate together.

  In view of the above problems, an object of the present invention is to provide a joint device that has a simple structure and can be easily replaced and maintained, and a test apparatus using the joint device.

  In the coupling device of the present invention, one end side can be connected to the first rotation shaft and the other end side can be rotated second in order to connect the first rotation shaft of the DUT and the second rotation shaft of the load device. It is connected to the shaft, and at least a part moves in the shaft connecting direction connecting the first rotating shaft and the second rotating shaft so as to correspond to the end position of the first rotating shaft corresponding to the size of the test object. A rotation transmission shaft configured to be extendable and connecting the first rotation shaft and the second rotation shaft so as to rotate integrally around an axis of both rotation shafts, and allowing the rotation transmission shaft to be inserted and rotating the rotation shaft. A spacer that is movable relative to the transmission shaft in the shaft coupling direction is detachable, and the spacer is configured to be rotatable together with the rotation transmission shaft.

According to the joint device having the above configuration, the rotation transmission shaft is attached between the first rotation shaft and the second rotation shaft according to the position of the end portion of the first rotation shaft, and the two rotation shafts are coupled. The one rotation shaft and the second rotation shaft can rotate together. In addition, when the first rotary shaft and the second rotary shaft are largely separated, by attaching a spacer, the first rotary shaft and the second rotary shaft can be rotated together without preparing a long rotation transmission shaft. Is possible. Furthermore, since the spacer allows the rotation transmission shaft to be inserted, even if the spacer is attached, the distance from the end position of the first rotation shaft to the second rotation shaft can be obtained by inserting the rotation transmission shaft therethrough. Therefore, the joint device can be adjusted in length in a stepless manner.
Furthermore, in the joint device, the rotation transmission shaft and the rotation transmission shaft are inserted with respect to the separation distance between the end position of the first rotation shaft and the end position of the second rotation shaft, which varies depending on the size of the test object. Since it is a configuration that can be accommodated by an allowable spacer, complication of the configuration of the joint device itself is suppressed, and therefore, workability for replacement and maintenance of members constituting the joint device is improved.
The load device is a concept including both a device for applying a load to the rotation of the first rotating shaft and a device for applying a load by the rotation of the first rotating shaft. Dynamo and the latter are examples of the former. An example of this is a generator.

  In the joint device of the present invention, the rotation transmission shaft is a spline shaft, the spline shaft is attachable to and detachable from the first rotation shaft side, and is movable along the shaft coupling direction, and the spacer is relative to the spline shaft. A fitting that is detachable on the second rotating shaft side and that can be inserted through the spline shaft, and that the outer peripheral portion of the end portion of the spline shaft is slidably fitted to the inner peripheral surface of the second rotating shaft on the first rotating shaft side. It is characterized in that a joint is provided.

According to the above configuration, the spline shaft is attached and the outer peripheral portion of the end portion is fitted into the fitting portion and slid, so that the first rotation shaft and the second rotation shaft are positioned at a position adapted to the end position of the first rotation shaft. It is possible to connect the rotating shaft, and it is possible to connect the first rotating shaft and the second rotating shaft while attaching a spacer and securing the distance in the longitudinal direction by the spacer. .
Then, by fitting and sliding the end outer periphery of the spline shaft into the fitting portion, the length of the joint device in the longitudinal direction is stepless within the range in which the end outer periphery of the spline shaft and the fitting portion slide. Adjustment in is possible.

  In the coupling device of the present invention, the spline shaft and the spacer are a flange for the first rotating shaft that protrudes radially outward of the first rotating shaft and a flange for the second rotating shaft that protrudes radially outward of the second rotating shaft. The flange part on both sides of the longitudinal direction of the spline shaft can be attached to and detached from the flange part on the second rotating shaft side of the spline shaft and the flange portion on the first rotating shaft side of the spacer, and the second rotation of the spline shaft The shaft-side flange portion is provided so as to rotate integrally with the spline shaft and is movably provided along the axis of the spline shaft.

  According to the above configuration, the flange portion on the second rotating shaft side and the flange portion on the first rotating shaft side of the spacer are connected to the spline shaft, and the first rotating shaft side flange portion and the first rotating shaft side of the spline shaft are connected. Connect the flanges, connect the flange on the second rotating shaft side of the spacer and the flange for the second rotating shaft, and connect the spline shaft on the second rotating shaft side according to the end position of the first rotating shaft. Move along the axis with respect to the flange, or insert the spline shaft through the spacer.

The joint device of the present invention is characterized in that the first rotary shaft and the second rotary shaft are connected to rotate integrally with each other via an intermediate bearing device connected to the first rotary shaft side of the second rotary shaft.
According to the said structure, since rotation of a 1st rotating shaft is transmitted to a 2nd rotating shaft via an intermediate bearing apparatus, it is suppressed that an unnecessary load acts on a load apparatus.

The joint device according to the present invention is configured such that the first rotating shaft of the DUT arranged in the test chamber and the second rotating shaft of the load device arranged outside the test chamber are arranged and connected in the test chamber. It is characterized by being.
According to the above configuration, since the joint device is disposed in the test chamber so as to connect the first rotation shaft and the second rotation shaft of the load device, the joint device is disposed when inserted through the wall of the test chamber or outside the test chamber. Compared to the device, the joint device can improve workability for replacement and maintenance.

  In the test apparatus according to the present invention, the first rotation axis of the DUT arranged in the test chamber and the second rotation axis of the load apparatus arranged outside the test chamber are any of the above in the test chamber. It is characterized by being connected by a joint device.

  In the above configuration, since the rotation transmission shaft and the spacer are detachably disposed in the test chamber, the joint device is more than when the joint device is inserted into the test chamber wall or disposed outside the test chamber. Workability for replacement and maintenance is improved.

According to the joint device of the present invention, the rotation transmission shaft is attached between the first rotation shaft and the second rotation shaft according to the position of the end portion of the first rotation shaft, and the two rotation shafts are coupled. The one rotation shaft and the second rotation shaft can be rotated together, and the rotation transmission shaft is long even if the first rotation shaft and the second rotation shaft are greatly separated by attaching a spacer. The first rotation shaft and the second rotation shaft can be integrally rotated without forming the spacer, and the spacer allows the rotation transmission shaft to be inserted. By inserting, the length can be adjusted according to the distance from the end position of the first rotation axis to the second rotation axis, and the end position of the first rotation axis and the second position change depending on the size of the test object. The rotation transmission shaft and the rotation transmission shaft are inserted with respect to the separation distance between the end positions of the rotation shaft. Since the corresponding structure in the permissible spacers, it is possible to suppress complication of the configuration of the coupling device itself, therefore, it is possible to improve the workability for replacement or maintenance of the members constituting the coupling device.
According to the test apparatus of the present invention, since the joint apparatus is disposed in the test chamber and has the rotation transmission shaft and the spacer so as to be detachable, the joint apparatus is disposed when the joint apparatus is inserted through the wall of the test chamber or outside the test chamber. Compared to the case, the workability for replacement and maintenance can be improved.

Hereinafter, a test apparatus according to an embodiment of the present invention will be described with reference to the drawings. In this embodiment, the rotating shaft of the device under test is rotated while the rotating shaft of the device under test and the rotating shaft of the load device are connected by a joint device so that the two rotating shafts rotate integrally around the axis. This relates to a test apparatus for inspecting
In addition, a power train is mentioned as a to-be-tested body, and it is a vehicle transmission, an engine, etc. in detail. In addition, the load device includes both a device for applying a load to the rotation of the rotating shaft of the device under test and a device for applying a load by the rotation of the rotating shaft. The former is a dynamo, and the latter is a generator. Is mentioned.
1 is an overall schematic plan view of a test apparatus showing an embodiment of the present invention, FIG. 2 is a partially enlarged plan view, FIG. 3 is a front view showing details of a joint device, FIG. 4 is an enlarged front view, and FIG. A front view showing another method of using the apparatus, FIG. 6 is an enlarged front view.

  The test apparatus T shown in these figures includes a device under test in a semi-anechoic chamber 2 (an example of a test chamber, which may be an anechoic chamber) formed by being surrounded by a wall 1. 3, a dynamo as a load device 5 is arranged outside the semi-anechoic sound chamber 2, and the first rotating shaft 4 of the device under test 3 and the second rotating shaft 6 of the load device 5 are semi-free. The sound chamber 2 is connected by a joint device 10, and the first rotation is performed while applying a load due to the driving of the load device 5 to the rotational drive of the first rotation shaft 4 from the second rotation shaft 6 through the joint device 10. The shaft 4 is rotated to test the state of the device under test 3, in this case, the rotational torque. The reason for applying a load to the first rotating shaft 4 of the device under test 3 is to set an environment close to the actual machine.

The second rotating shaft 6 of the load device 5 is introduced from the outside of the semi-anechoic sound chamber 2 into the semi-anechoic sound chamber 2 so as to pass through the wall 1, and the second rotating shaft is provided at the leading end of the introduction side. An intermediate bearing device 7 concentric with 6 is disposed in the semi-anechoic sound chamber 2 and connected.
The intermediate bearing device 7 is placed on the mounting table 8 so as to be immovable in the lateral direction, that is, in the axial direction connecting the end portions of the first rotating shaft 4 and the second rotating shaft 6. The rotational driving force (braking force) of the device 5 is transmitted to the first rotating shaft 4 side to apply a load to the rotation of the first rotating shaft 4.

In this type of DUT 3, the size varies depending on the type of vehicle mounted. Therefore, if the installation position of the DUT 3 in the semi-anechoic sound chamber 2 is the same, the position of the end 4c on the intermediate bearing device 7 side of the first rotating shaft 4 of the DUT 3 is determined. It depends on the body 3.
Therefore, the first rotating shaft 4 and the second rotating shaft 6 are connected to the first rotating shaft 4 (the device under test 3) side end of the intermediate bearing device 7 and the intermediate bearing device 7 side end of the first rotating shaft 4. The first rotating shaft 4 and the intermediate bearing device 7 are integrally rotated around the shaft centers 4a and 7b, respectively, by the joint device 10 that is extendable in the shaft connecting direction for connecting the shaft centers.

Here, the configuration of the joint device 10 will be described. The joint device 10 is extendable in the shaft coupling direction on an axis line connecting the end portion 4c of the first rotating shaft 4 on the intermediate bearing device 7 side and an end portion of a rotating inner shaft body 7A described later in the intermediate bearing device 7. And it is configured to be movable. At least a part of the joint device 10 is configured to be movable in a direction in which the first rotary shaft 4 and the intermediate bearing device 7 (second rotary shaft 6) are connected.
In this embodiment, as shown in FIGS. 3 to 6, the joint device 10 is mounted on the laying rail member 11 assembled on the mounting table 8 so as to be reciprocally movable along the axis 4 a. And a non-movable part 10 </ b> B that is detachably attached to the end of the intermediate bearing device 7.

A movable base 13 is attached to the laying rail member 11, and the laying rail member 11 rotates the rotation operation handle 12 provided on the mounting table 8 about an axis in a direction perpendicular to the directions of the axis 4 a and 7 b. By doing so, the movable base 13 can be reciprocated along the shaft centers 4a and 7b by a rack and pinion mechanism (not shown).
A torque meter 14 is mounted and fixed on the moving table 13, and the torque meter 14 is configured to reciprocate in the direction along the shaft centers 4 a and 7 b together with the moving table 13. Note that the rotation operation handle 12 may be provided on either or both of them via the mounting table 8 so as to rotate around the axis in the direction perpendicular to the directions of the axes 4a and 7b. Thus, the torque meter 14 can be configured to reciprocate in the direction along the axial centers 4 a and 7 b together with the movable table 13 at either one position of the mounting table 8 or a position opposite to the position.

On both sides of the torque meter 14, end portions of the torque meter rotating shaft 15 are protruded on both sides in the directions of the shaft centers 4 a and 7 b, and on the first rotating shaft 4 side, which is one end side of the torque meter rotating shaft 15. The first flange member 16 constituting a part of the movable part 10A of the joint device 10 is externally fitted, and the second rotating shaft 6 side (the intermediate bearing device 7 side), which is the other end side of the torque meter rotating shaft 15. A second flange member 17 constituting a part of the movable part 10A of the joint device 10 is externally fitted. A flange member provided at the end 4c of the first rotating shaft 4 is detachably attached to the first flange member 16 by a mounting bolt 30 inserted through the bolt hole 30a.
Thus, the torque meter 14 can measure the accurate torque of the device under test 3 by arranging it as close as possible to the device under test 3.

A spline shaft 20 that constitutes a part of the movable portion 10A as a rotation transmission shaft is detachably provided on the intermediate bearing device 7 side of the second flange member 17. On one end side of the spline shaft 20, that is, on the first rotating shaft 4 side, a first flange member 20B for spline shaft that is overlapped with the second flange member 17 in the lateral direction is integrally formed. The first flange member 20B for a spline shaft has a truncated cone-shaped portion that is gradually expanded radially outward from the shaft body 20A. In this way, the first flange member 20B for spline shafts is formed so as to sequentially expand radially outward from the shaft main body 20A, thereby ensuring a predetermined rigidity.
The spline shape may be an involute spline (may be involute serration), a square spline, or other spline shapes.

The spline shaft second flange member 22 corresponding to the flange portion attached to and detached from the second rotary shaft flange is provided on the shaft main body 20A side of the spline shaft 20, that is, on the intermediate bearing device 7 (second rotary shaft 6) side. have. The second flange member 22 for the spline shaft is fitted to the spline portion 20a of the spline shaft 20 so as to rotate integrally with the spline shaft 20, and is slidably fitted along the spline portion 20a.
The second flange member 22 for a spline shaft has a main body portion 22a having a predetermined length so as to ensure necessary rigidity, and a flange portion assembled with a spacer 23 described later is further radially outward from the main body portion 22a. Are integrally formed so as to protrude in the direction.

An O-ring 22d is provided on the first rotation shaft 4 side of the grease supply port 22c on the inner peripheral surface of the main body 22a of the second flange member 22 for spline shaft. The O-ring 22d has a function of contacting the outer peripheral surface of the spline of the shaft body 20A and sealing the grease supplied from the grease supply port 22c so as not to leak to the outside as much as possible.
However, since the O-ring 22d is difficult to follow the cross-sectional shape of the spline at the initial stage, grease leakage is conceivable. Can be suppressed. A cushion material 24 is provided on the intermediate bearing device 7 side of the shaft main body 20A of the spline shaft 20.
As described above, the movable portion 10 </ b> A of the joint device 10 includes the first flange member 16, the second flange member 17, and the spline shaft 20 (including the spline shaft second flange member 22).

The non-movable part 10B of the joint device 10 includes an intermediate bearing flange member 25 fitted to the end of the rotary inner shaft 7A on the first rotating shaft 4 side, and a first rotation of the intermediate bearing flange member 25. It has the said spacer 23 (refer FIG. 5, FIG. 6) which can be attached or detached to the axis | shaft 4 side.
The rotating inner shaft body 7A is provided in the outer cylinder member of the intermediate bearing device 7 so as to be rotatable around the axis 7b. Further, a concave portion 7a into which the tip end side of the spline shaft 20 is slidably inserted is formed along the axis 7b of the rotating inner shaft body 7A at the end portion of the rotating inner shaft body 7A on the first rotating shaft 4 side. ing.

The spacer 23 is integrally formed with spacer flanges 23a and 23b projecting radially outward at both end portions in the axial direction.
The spacer 23 has a cylindrical main body 23A (for example, a cylindrical shape), and its inner diameter d1 is set to be larger than the outer diameter d2 of the shaft main body 20A of the spline shaft 20, and the spline shaft 20 is a spacer main body. When inserted into 23A, a predetermined gap is formed between the outer peripheral surface of the shaft main body 20A and the inner peripheral surface of the spacer main body 23A.
The thickness of the spacer main body 23A is appropriately determined depending on specifications such as required rigidity and inertia.

The second flange member 17, the main body portion 22a of the second flange member 22 for the spline shaft, and the end face on the intermediate bearing device 7 side of the spacer flange 23b on the second rotating shaft 6 side protrude toward the intermediate bearing device 7 side. The bulging portions 17a, 22b, and 23c for positioning such as a rectangular shape and a circular shape in a side view are integrally formed.
The end surfaces of the spline shaft 20, the spacer 23, and the intermediate bearing flange member 25 on the first rotating shaft 4 side are recessed on the intermediate bearing device 7 side, and the bulging portions 17a, 22b, and 23c are fitted therein. Fitting recesses 20b, 23d, and 25a are formed, respectively.

  In the test apparatus T having the joint device 10 having the above-described configuration, the joint device 10 is connected to the first rotary shaft 4 and the intermediate bearing device 7 (according to the end position of the first rotary shaft 4 depending on the size of the DUT 3. The ends of the second rotating shaft 6) can be moved or expanded or contracted in the direction of connecting the shafts to connect the two shafts.

  For example, the case where neither the spline shaft 20 nor the spacer 23 is used can be considered. In this case, the rotary operation handle 12 is rotated to move the moving table 13 toward the intermediate bearing device 7, the end surfaces of the second flange member 17 and the intermediate bearing flange member 25 are brought into contact with each other, and the flange members are brought into contact with each other. The mounting bolt 30 is inserted through and fixed. At this time, the bulging portion 17a and the fitting recess 25a are fitted to each other so that the torque meter rotary shaft 15 and the rotary inner shaft body 7A of the intermediate bearing device 7 are aligned.

As shown in FIGS. 3 and 4, the spline shaft 20 can be attached to the joint device 10 according to the position of the end portion of the first rotating shaft 4.
In this case, in order to correspond to the DUT 3 to be handled, the rotary operation handle 12 is rotated as necessary so that the second flange member 17 is separated from the intermediate bearing device 7 and is fitted to the bulging portion 17a. The first flange member 20B for the spline shaft 20 of the spline shaft 20 is brought into contact with the second flange member 17 so that the concave portion 20b is fitted, and the flange members are fixed by the mounting bolts 30.

Further, the second flange member 22 for the spline shaft and the flange member for the intermediate bearing are fitted with the bulging portion 22b of the second flange member 22 for the spline shaft and the fitting recess 25a of the flange member 25 for the intermediate bearing. The 25 end surfaces are brought into contact with each other and fixed by the mounting bolt 30.
By doing in this way, the 1st rotating shaft 4 and the 2nd rotating shaft 6 can be integrally connected to rotation, and while applying load to the 1st rotating shaft 4 of the DUT 3 with load device 5, The device under test 3 can be tested under the environment of an actual machine.
In addition, the middle portion of the shaft main body 20A of the spline shaft 20 can slide on the second flange member 22 for the spline shaft, and the tip portion of the shaft main body 20A of the spline shaft 20 can slide with respect to the recess 7a. The shortest state in which the tip portion of 20A is fitted into the recess 7a, and the longest state in which the tip portion of the shaft body 20A is detached from the recess 7a and the shaft body 20A is fitted only into the second flange member 22 for the spline shaft. In between, the length of the coupling device 10 can be adjusted steplessly.
The joint device 10 can be expanded and contracted easily by rotating the rotary operation handle 12 and moving the movable table 13 along the laying rail member 11.

Even if the end position of the first rotating shaft 4 is at a position where the tip end portion of the spline shaft 20 must be separated from the recess 7a, the spline shaft second flange member 22 is connected to the spline shaft 20 and the spline. Since they are fitted, the first rotary shaft 4 and the second rotary shaft 6 can be rotated integrally.
The second flange member 22 for the spline shaft preferably has a predetermined volume to give the main body 22a the necessary rigidity. For this purpose, the radial thickness is increased as much as possible, and the spline shaft 20 The range in the axial direction where the spline is fitted is set as appropriate according to the type of the DUT 3 to be applied. In particular, by increasing the range in which the spline shaft 20 and the spline are fitted, the contact area between the two increases, so that the surface pressure of the contact portion can be reduced, and the deformation of the spline against torsion can be suppressed. it can.

  As shown in FIGS. 5 and 6, the spacer 23 can be attached to the joint device 10 according to the end position of the first rotating shaft 4. In this case, if necessary, the rotation operation handle 12 is rotated so that the second flange member 17 is separated from the intermediate bearing device 7 and the bulging portion 23c of the spacer 23 and the fitting concave portion of the intermediate bearing flange member 25 are retained. 25a, and the end faces of the spacer flange and the intermediate bearing flange member 25 are brought into contact with each other and fixed by the mounting bolt 30.

Also, the bulging portion 22b of the second spline shaft flange member 22 and the fitting recess 23d of the spacer 23 are fitted together so that the end surfaces of the second spline shaft flange member 22 and the spacer flange 23a are brought into contact with each other. It is made to contact and is fixed by the mounting bolt 30.
In this way, the first rotary shaft 4 and the second rotary shaft 6 can be connected to each other via the spline shaft 20 and the spacer 23 so as to rotate integrally, and the first rotary shaft 4 and the spline shaft 20 are connected. The test object 3 can be tested in an environment close to an actual machine while the spacer 23 and the second rotary shaft 6 rotate together and a load is applied to the first rotary shaft 4 of the test object 3 by the load device 5.

  In the case of the joint device 10 to which both the spacer 23 and the spline shaft 20 are attached, the spline shaft 20 is the shortest in which the shaft body 20A is inserted through the spacer 23 and the tip portion of the shaft body 20A is fitted in the recess 7a. The length of the shaft main body 20A is not stepped in the recess 7a or the spacer 23, and the longest posture is slidably fitted with only the second flange member 22 for the spline shaft. Can be adjusted.

  When the spacer 23 is attached, the first flange member 16 can be brought closer to the first rotating shaft 4 side accordingly. Therefore, it is particularly effective when the end position of the first rotating shaft 4 is greatly separated from the intermediate bearing device 7, and the spline shaft 20 can slide while being fitted to the second flange member 22 for spline shaft. Therefore, after the first flange member 16 is brought as close as possible to the first rotating shaft 4 side, the rotation operation handle 12 can be rotated to finely adjust the expansion / contraction amount of the joint device 10.

  In the case of the joint device 10 to which both the spacer 23 and the spline shaft 20 are attached, the length of the joint device 10 is longer than that in the case where the spacer 23 is not attached. Unbalanced vibration due to deviation from the radial center of gravity is likely to occur. However, the first flange member 20B for the spline shaft of the second flange member 17 and the spline shaft 20, and the second flange member 22 for the spline shaft and the flange member 25 for the intermediate bearing are fitted to the bulging portions 17a, 22b, and 23c, respectively. Positioning can be easily performed by fitting the recesses 20b, 23d, and 25a. Therefore, by performing balance adjustment in a state where the respective parts are assembled, the state in which the unbalance vibration is generated is effectively prevented. can do.

  Since the joint device 10 is in the semi-anechoic sound chamber 2, it is possible to maintain the joint device 10 and replace or use the spline shaft 20 as compared with the case where the joint device 10 is provided so as to be inserted through the wall 1. Replacement of parts that are easily deformed or damaged can be easily performed.

Further, when the spacer 23 is used, the axial length of the spacer 23 is made as long as possible and the spline shaft 20 is made as short as possible in the axial direction so that the wind noise of the spline is minimized. Since it can suppress, the noise measurement test which generate | occur | produces in the semi-anechoic sound chamber 2 with rotation of the 1st rotating shaft 4 of the to-be-tested body 3 can also be performed correctly.
Further, since the spacer 23 covers the shaft main body 20A when the shaft main body 20A of the spline shaft 20 is inserted, the generation of wind noise that is likely to occur when the spline shaft 20 rotates by that amount is suppressed. The noise measurement test can be performed more accurately. Further, since the spacer 23 covers the shaft body 20A when the shaft body 20A of the spline shaft 20 is inserted, in the region of the spline shaft 20 covered by the spacer 23, the spline shaft 20 is connected to the grease supply port 22c. It is possible to effectively prevent the grease supplied to the spatter 20 from being scattered by the rotation of the spline shaft 20, and hence to suppress the grease from adhering to the surrounding parts.

In the test apparatus T in the above embodiment, the DUT 3 is a transmission mounted on a vehicle, the load apparatus 5 is a dynamo that applies a load to the rotation of the first rotary shaft 4, and torque is applied on the axis of the joint apparatus 10. Although the case where the meter 14 is arranged to measure the torque of the transmission is shown, the present invention is not limited to this, and the device under test 3 as the test object is an engine that is another example of the power train, and the load device 5 It is also within the scope of the present invention to provide a generator that generates electric power when a load is applied by the rotation of the first rotating shaft 4 of the device under test 3.
The first rotating shaft 4 and the second rotating shaft 6 may be any of the input shaft and the output shaft of the device under test 3 and the load device 5, and the first rotating shaft 4 and the second rotating shaft 6. Is also within the scope of the present invention.

In the above embodiment, the spline shaft 20 is disposed on the first rotating shaft 4 side, the spline shaft 20 is a component of the movable portion 10A of the joint device 10, and the spacer 23 is disposed on the second rotating shaft 6 side. However, the present invention is not limited to this, but the spline shaft 20 is disposed on the second rotating shaft 6 side, and the spacer 23 is disposed on the first rotating shaft 4 side. With this configuration, the spacer 23 can be a component of the movable part 10 </ b> A of the joint device 10, and the spline shaft 20 can be a component of the non-movable part 10 </ b> B of the joint device 10.
In this case, the intermediate bearing flange member 25 and the spline shaft first flange member 20B are connected, the spline shaft second flange member 22 and the spacer flange 23b are connected, and the second flange member 17 and the spacer flange are used. By connecting the flange 23a, the first rotating shaft 4 and the second rotating shaft 6 can be integrally rotated about the axis of the first rotating shaft 4 and the second rotating shaft 6.
In addition, instead of providing the recess 7a into which the tip end side of the spline shaft 20 is slidably inserted at the end of the rotary inner shaft body 7A on the first rotating shaft 4 side, the spline shaft 20 is preferably attached to the torque meter rotating shaft 15. By providing a recess into which the tip end side of the spline shaft is slidably inserted, the joint device 10 is configured so that the shaft body 20A of the spline shaft 20 is inserted through the spacer 23 and the tip portion of the shaft body 20A is fitted in the recess. The length of the shaft body 20A is continuously adjusted between the posture and the longest posture in which the tip end portion of the shaft body 20A is slidably fitted with only the second flange member 22 for the spline shaft without the recess 23 or the spacer 23. can do.

Overall schematic plan view of a test apparatus showing an embodiment of the present invention Also partially enlarged plan view Front view showing details of joint device Also enlarged front view Front view showing another method of using the joint device Also enlarged front view

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Wall, 2 ... Semi-anechoic sound chamber, 3 ... Test object, 4 ... 1st rotating shaft, 5 ... Load apparatus, 6 ... 2nd rotating shaft, 7 ... Intermediate bearing apparatus, 10 ... Joint apparatus, 10A ... Movable part, 10B ... non-movable part, 20 ... spline shaft, 20B ... first flange member for spline shaft, 22 ... second flange member for spline shaft, 23 ... spacer, 23a, 23b ... flange for spacer, T ... test device

Claims (6)

In order to connect the first rotating shaft of the device under test and the second rotating shaft of the load device, one end can be connected to the first rotating shaft and the other end can be connected to the second rotating shaft. The joint is configured to be extendable so as to correspond to the end position of the first rotating shaft according to the size of the test object by moving the portion in the shaft connecting direction connecting the first rotating shaft and the second rotating shaft. A device,
A rotation transmission shaft that connects the first rotation shaft and the second rotation shaft so as to rotate integrally around the axis of the two rotation shafts, and allows the rotation transmission shaft to be inserted into the rotation transmission shaft. A joint device characterized in that it has a detachable spacer that is relatively movable in the shaft coupling direction, and the spacer is configured to be rotatable together with the rotation transmission shaft.   The rotation transmission shaft is a spline shaft. The spline shaft can be attached to and detached from the first rotational shaft and can move along the shaft coupling direction. The spacer is attached to and detached from the second rotational shaft with respect to the spline shaft. A spline shaft can be inserted and a fitting portion is provided on the inner peripheral surface of the second rotary shaft on the first rotary shaft side so that the outer peripheral portion of the end portion of the spline shaft is slidably fitted. The joint device according to claim 1.   The spline shaft and the spacer are provided with a detachable flange portion on the first rotating shaft flange projecting radially outward of the first rotating shaft and the second rotating shaft flange projecting radially outward of the second rotating shaft. The flange part on the second rotating shaft side of the spline shaft and the flange part on the first rotating shaft side of the spacer are detachable on both sides in the longitudinal direction, and the flange part on the second rotating shaft side of the spline shaft is the spline shaft. The joint device according to claim 1 or 2, wherein the joint device is provided so as to rotate integrally with the shaft and is movable along the axis of the spline shaft.   The first rotary shaft and the second rotary shaft are connected to rotate integrally with each other via an intermediate bearing device connected to the first rotary shaft side of the second rotary shaft. A joint device according to any one of the above.   The first rotating shaft of the DUT arranged in the test chamber and the second rotating shaft of the load device arranged outside the test chamber are arranged and connected in the test chamber. The joint apparatus in any one of Claims 1 thru | or 4.   The first rotation axis of the DUT arranged in the test chamber and the second rotation axis of the load device arranged outside the test chamber are defined in any one of claims 1 to 4 in the test chamber. It is connected with the joint apparatus of.

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