JPH0317057Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention relates to an engine coupling device for coupling with a dynamometer when testing an engine used in combination with a torque converter or the like.

<Prior art> For engines that are used in combination with a torque converter, etc., a drive plate made of sheet metal is attached without using a flywheel, and a ring gear for starting is attached to the outer periphery of this drive plate by welding or the like. ing.

For this reason, when testing a single engine by attaching it to an engine testing device, the thickness of the drive plate is extremely thin, approximately 2 to 3 mm, for performance reasons.
Moreover, since there is little distance between the engine and the
Since it was not possible to connect the propeller shaft for power transmission, a method was adopted in which a flywheel for manual transmission was attached and the propeller shaft was attached using the bolt holes formed in this flywheel for testing. After the test, the drive plate was replaced. Therefore, the number of man-hours required for attachment and detachment increases, as well as the time required for attachment and detachment.Especially, when testing is performed on a production line, work efficiency cannot be improved and a smooth transition to subsequent processes cannot be achieved. There were flaws.

On the other hand, as a device for connecting the propeller shaft to the engine, reliable connection can be made with one touch.
It is required that there is no vibration or noise even during deceleration, and that the test can be performed safely.

<Purpose of the invention> This invention was made in view of the current situation.
To provide an engine coupling device which can connect a propeller shaft with a single touch with a drive plate attached and is highly safe without generating noise.

<Summary of the invention> In order to achieve this objective, the invention provides a flange shaft coaxially with the drive plate attached to the output shaft of the engine, and a flange portion formed on the flange shaft that can mesh with the ring gear of the drive plate. At the same time, a locking piece that can be engaged and retracted from the ring gear by operating a lock bolt and that clamps the ring gear is installed via a disc spring, and the propeller shaft is connected to this flange shaft, so the drive plate can be installed. The engine and propeller shaft can be connected with one touch by simply touching the flange shaft to the engine, engaging the internal gears, and then operating the lock bolt.

<Example> Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is a schematic diagram of the overall configuration of an engine testing device using the engine coupling device of the present invention, in which an engine 2 with a drive plate attached is connected to a propeller shaft 4 equipped with a universal joint via a coupling device 3. The dynamometer 7 is connected to a dynamometer 7 via an intermediate shaft 5 and a clutch 6, and an air starter 9 for starting the engine is provided to the dynamometer 7 via a gear 8. They are starting to mesh together.

The engine coupling device 3 used to couple the engine 2 and the dynamometer 7 includes a ring gear 10 of the drive plate 1, as shown in FIGS. 2 and 3.
The connection with the propeller shaft 4 is achieved by using this.

FIG. 2 is a longitudinal cross-sectional view of an embodiment of the engine coupling device of the present invention, and FIG. 3 is an enlarged cross-sectional view of the essential parts thereof, showing a flange shaft 11 provided with a coupling portion 11a to which the propeller shaft 4 is coupled.
A fitting part 11b is formed to be rotatably fitted to the sleeve at the rear end of the crankshaft 12 of the engine 2, and is arranged coaxially with the crankshaft 12 and the drive plate 1 attached thereto. It's getting old. This flange shaft 11 has a disc-shaped flange portion 11c facing the drive plate 1.
is formed, and internal gears 13 capable of meshing with the ring gear 10 fixed to the outer periphery of the drive plate 1 by welding are arranged at equal intervals in the circumferential direction on the outer peripheral edge of this flange portion 11c. It is fixed with multiple bolts (not shown),
By meshing the internal gear 13 with the link gear 10, the relative rotation thereof is restricted and rotational torque can be transmitted to the propeller shaft 4 via the flange shaft 11.

In addition, the flange portion 11 of the flange shaft 11
Further, a plurality of (four in this embodiment) boss portions 11d are protrudingly provided on the outer peripheral edge portion of c at equal intervals in the circumferential direction, and a lock bolt 14 is screwed into an internal thread formed to penetrate through the boss portions 11d. At the same time, the internal gear 13
A lock piece 15 is slidably fitted into a hole formed coaxially with the female thread and having a smaller diameter than the female thread.

A stepped hole is provided in the center of the lock bolt 14 passing through it in the axial direction, into which the adjustment bolt 16 is slidably inserted, and a disc spring 17 is attached to the threaded portion protruding from the lock bolt 14 at the tip. A locking piece 15 is screwed together through the locking piece, and a disc spring 1 is attached to the opposite end surfaces of the locking bolt 14 and locking piece 15.
The lock piece 15 and the adjustment bolt 16 are fixed by a set screw 18 which is screwed into the lock piece 15 in a state where the lock piece 7 is compressed. Therefore, the lock bolt 14 and the lock piece 15 can be rotated about their respective axes with the required resistance due to the friction force caused by the repulsive force of the disc spring 17, and the friction force is also applied to the lock piece 15.
Adjustment is possible by changing the screwing position of the lock bolt 14 and the lock piece 15 and adjusting the distance between the lock bolt 14 and the lock piece 15.

A locking part 15a is formed at the tip of the locking piece 15 and projects in a direction perpendicular to its axis.
As shown in the figure, when the locking piece 15 is rotated so that the locking portion 15a faces toward the center of the flange shaft 11, the tip of the locking portion 15a is connected to the internal gear 13.
The locking portion 15a protrudes over the teeth of the ring gear 10 and can engage with the teeth of the ring gear 10 (FIG. 4a), and when the locking portion 15a is rotated 180 degrees, the locking portion 15a retreats from the teeth of the internal gear 13 (see FIG. 4a). It looks like Figure 4 b). Further, a stopper pin 19 is implanted in the internal gear 13 adjacent to the locking piece 15 on the left side in FIG. A stopper pin 19 comes into contact with the lock piece 15 to restrict its rotation.

In the engine coupling device 3 configured as described above, the universal joint at one end of the propeller shaft 4 is connected to the coupling portion 11a of the flange shaft 11 in advance.

After this, the fitting part 11 of the flange shaft 11
b is fitted into the sleeve at the rear end of the crankshaft 12 of the engine 2, the flange shaft 11 is positioned coaxially with the crankshaft 12 and pushed in, and the internal gear 13 is engaged with the ring gear 10. At the time of this engagement, the locking bolt 14 is rotated so that the locking portion 15a of the locking piece 15 is retracted from above the teeth of the internal gear 13 in advance. Next, by rotating the lock bolt 14 so as to move it to the right in FIGS. By protruding it, it can engage with the teeth of the ring gear 10 and come into contact with the stopper pin 19.

When the lock bolt 14 is further rotated, the lock bolt 14 and the lock piece 15 rotate relative to each other against the frictional force of the disc spring 17, since the lock piece 15 is locked to the stopper pin 19.
The locking piece 15 moves to the right while maintaining its rotational position, and the ring gear 10 is clamped between the locking portion 15a and the flange portion 11c of the flange shaft 11, thereby fixing the flange shaft 11.

After connecting the propeller shaft 4 to the drive plate 1 attached to the crankshaft 12 of the engine 2 via the coupling device 3 in this way, the engine 2
Perform a performance test. During testing of this engine, rotational torque is transmitted by meshing the internal gear 13 fixed to the flange portion 11c of the flange shaft 11 with the ring gear 10, and the ring gear 10 is clamped by the locking piece 15, so that the ring gear 10 is connected. This is done reliably and firmly, thereby preventing the generation of vibration and noise during deceleration.

On the other hand, after the engine test is completed, by rotating the lock bolt 14 in the opposite direction to that described above, the ring gear 1
After releasing the clamping pressure of 0 and rotating the lock piece 15 to put the locking part 15a in the retracted state, the flange shaft 11 is removed, and the connection of the propeller shaft 4 is released with a single touch.

<Effects of the invention> As described above in detail with one embodiment, according to the invention, a propeller shaft is connected to a flange shaft equipped with an internal gear that meshes with a ring gear of a drive plate, and the propeller shaft is operated by a lock bolt. A locking piece that clamps the ring gear with the flange shaft is provided via a disc spring, so even if the engine is equipped with a drive plate, the propeller shaft for power transmission can be connected with a single touch by just operating from the front, and it is not as easy as conventional methods. There is no need to replace the drive plate and flywheel.

Therefore, the engine assembled on a production line or the like can be tested in a short time, and the number of man-hours is reduced. Furthermore, since the drive plate can be tested as it is and the inertia can be made close to the original engine operating condition, the increase in inertia caused by replacing it with a flywheel can be prevented and accurate performance tests can be performed. In addition, the number of parts is small, and there are no parts that separate when attached to or removed from the engine, making management easy, and is particularly suitable for testing engines on a production line.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of the entire engine testing device using the engine coupling device of the present invention, Fig. 2 is a longitudinal sectional view of one embodiment of the engine coupling device of the present invention, and Fig. 3 is an enlarged view thereof. FIG. 4 is a side view of the main part of the locking piece, and FIG. 4a shows it when engaged, and FIG. 4b shows it when it is retracted. In the drawings, 1 is a drive plate, 2 is an engine, 3 is an engine coupling device, 4 is a propeller shaft, 10 is a ring gear, 11 is a flange shaft, 11a is a coupling part, 11b is a fitting part,
11c is a flange portion, 11d is a boss portion, 12 is a crankshaft, 13 is an internal gear, 14 is a lock bolt, 15 is a lock piece, 15a is a locking portion, 16 is an adjustment bolt, 17 is a disc spring, 18 is a set screw, 1
9 is stopupapin.

Claims (1)

[Scope of utility model registration request] a flange shaft disposed coaxially with a drive plate attached to the engine output shaft, connected to the propeller shaft, and formed with a flange portion facing the drive plate; an internal gear that meshes with the ring gear; lock bolts provided equally in the circumferential direction on the flange portion; and a lock bolt that is rotatably attached to the lock bolt and can be engaged with and retracted from the ring gear by rotation thereof. A lock piece having a locking portion and capable of holding the ring gear under pressure between the locking portion and the flange portion when the lock bolt is operated; It is characterized by having a disc spring that provides a necessary frictional resistance during rotation between the lock pieces, and a stopper means that restricts rotation of the locking piece at a position where the locking portion engages with the ring gear during the clamping. Engine coupling device.