JPS6131808B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary shaft joint for connecting two systems in which the distance from the driven system changes due to various changes in the drive system.

The above-mentioned rotating shaft joint is suitable for temporarily connecting engines (drive systems) of different sizes to a stationary dynamometer (driven system) in, for example, engine bench tests. When this was done, it was customary to interpose a connecting device called a "dummy transmission" between the engine and the dynamometer.

As shown in Fig. 1, the dummy transmission is rotatably supported by a clutch housing 1 that houses a clutch C attached to a flywheel housing H of an engine E, and has a tip attached to the clutch C and a rear end attached to the clutch housing H. are composed of rotating shafts 2 each connected to a dynamometer D by a flange,
The distance L between the mounting surface H1 of the clutch housing ₁ to the flywheel housing H and the front end 21 of the rotating shaft 2 is determined by the model of the clutch C, so if the model of the engine E is changed, for example, the flywheel Since the thickness FL and HL of the wheel F or the same housing H will change, the length will not match with the existing rotating shaft and it will no longer be possible to mount it. Therefore, conventionally, in such cases, the entire dummy transmission to match the engine was changed, but this required preparation of a dummy transmission only for the type of engine, which was very inconvenient in terms of management such as storage space. Yes, and the cost is also high.

Furthermore, Japanese Patent Application Laid-Open No. 50-59613 discloses a shaft coupling device particularly used in aircraft gas turbine engines, but this device is designed to fit one shaft into a hollow shaft with a keyway. At the same time, two tapered surfaces are formed on the one hollow shaft, and mutual axial movement is restrained by two annular members having tapered surfaces cooperating with the tapered surfaces, and It is configured to have a means for adjusting the annular member, and it is necessary to form a tapered surface in addition to the keyway on the shaft itself, and in addition, it requires a lot of processing for the two annular members and the adjusting means. Since it requires a large number of parts and has a complicated structure, it is unsuitable for a rotating shaft joint that requires frequent release and fixing for replacement.

In view of the above-mentioned points, an object of the present invention is to enable connection of different types of drive systems (drive sources such as engines and drive mechanisms connected thereto) by simply replacing only the intermediate shaft. shall be.

In order to achieve this object, the present invention includes a plurality of types of intermediate shafts in which one end side of the connection means provided at both ends corresponds to the connection mechanism of different types of drive systems, and a plurality of intermediate shafts rotatably supported by a support member, and one end of which is connected to the drive system. It consists of one type of rotating cylindrical member equipped with a connecting means and a retaining device that can be connected to the other end of the intermediate shaft and can be fitted into and removed from the other end of the intermediate shaft, and by selecting the intermediate shaft according to the type of drive system, It is an object of the present invention to provide a rotary shaft joint that connects dissimilar drive systems and driven systems via an intermediate shaft.

The structure of the present invention will be explained with reference to FIG. 2 corresponding to the embodiment.
63 and one end side of the small diameter portion 64) (said 61, 62)
A plurality of types of intermediate shafts 6 corresponding to connection mechanisms C and H of different types of drive systems E, C and F, rotatably supported by the support member 1, one end connected to the driven system D, and It consists of one type of rotating cylindrical member 4 equipped with the other end side (the above-mentioned 63, 64), connection means (shaft hole 41 and spline part 42 described later) that can be fitted and removed, and a retaining device 7, and the drive system E, C, By selecting the intermediate shaft 6 according to the type of F, the different drive systems E, C, F and the driven system D are connected via the intermediate shaft 6.

In the present invention, when the driven system D remains unchanged and the drive systems E, C, and F are different types, the support member 1 fixed to the drive system E or its component H is moved to the drive system E by the above-mentioned means. Or, after removing the support member 3 from the H, or removing the support member 3 from the same member 1, and removing one end side of the intermediate shaft 6 (the above-mentioned 61, 62) from the drive system E, C side, release the retaining device 7. Then, pull out the other end of the intermediate shaft 6 (63, 64 above) from the rotating cylindrical member 4, and set the length of the drive side suitable for the dimensions of the changed drive systems E, F on the one end (61, 62). Select the intermediate shaft 6 having the other end (63, 64)
is inserted into the rotating cylindrical member 4 and locked by the retaining device 7, and one end side (the above-mentioned 61, 6
2) are supported or engaged with the changed drive systems E, F, and C, and the support member 1 or 3 is engaged and fixed with the drive system E or C, and the rotating cylindrical member 4 is further connected with the driven system D. Bye.

As a result, the changed drive system E is smoothly connected to the driven system D via the rotary shaft joint of the present invention, and the drive system E
Rotation is also transmitted from the drive system D to the driven system D without any problem.

An embodiment of the present invention will be explained in detail by taking as an example a rotary shaft joint that connects an engine and a dynamometer shown in FIG. It is one of the components of the rotary shaft joint that connects the meter, and the tip part 61 is supported by a bearing P in the crankshaft on one end side.
A male spline portion 62 that engages with the boss portion of the clutch C that follows this is formed, and a male spline portion 63 and a small diameter portion 64 that follows this are formed on the other end side of the intermediate shaft 6, and the tip portion 61, The spline portions 62, 63 and the small diameter portion 64 constitute a connecting means. The intermediate shafts 6 are made of a plurality of shafts whose lengths from one end side, that is, the rear end surface of the clutch housing 1 of the engine E of the drive system, for example, to the end surface of the tip portion 61, differ depending on the engine type. Prepare them and use them depending on the engine.

Reference numeral 4 denotes a rotating cylindrical member as a component of the rotating shaft joint, and a connecting means that engages and disengages the other end sides 63 and 64 of the intermediate shaft 6, that is, a female spline portion into which the male spline portion 61 of the intermediate shaft fits. 42 and a shaft hole 41 into which the small diameter portion 64 fits,
A flange portion 43 coupled to the shaft of the dynamometer D is provided at the rear end.

In the illustrated example, the rotating cylindrical member 4 has a bearing 5.
a and 5b, and the fixed outer cylinder 3 has one end attached to the rear end of the support member (clutch housing) 1, while the rotating cylindrical member 4 is supported within the fixed outer cylinder 3. 3, bearings 5a, 5
b may be directly supported on the support member 1.

7 is currently under separate application (Utility Application No. 53-147603)
This is a device to prevent the shaft from coming off, and as shown in detail in FIG.
In the rotary cylindrical member 4 into which the intermediate shaft 6 is inserted, a hole 45 is bored approximately at right angles to the intermediate shaft 6 at the location where the groove 64a is located, and a hole 45 is formed near the outer end of the hole 44. Attach the retaining nut 72 having the center hole 72a, and insert the set pin 71 across the two holes 45 and 72a to lock the tip 71a.
The set pin 71 has a flange 7 at its center.
1c and a groove 71b following it, and when the tip 71a of the set pin 71 is in the groove 64a of the intermediate shaft 6 in the retaining nut 72, one end communicates with the center hole 72a at the position of the groove 71b of the set pin, and the other end An inclined hole 72b is formed obliquely reaching near the outside of the retaining nut 72, and a ball 74 is housed in the hole 72b.

In the embodiment of the present invention configured as described above, when the engine E rotates, the power is transmitted to the intermediate shaft 6 from the male spline 62 on one end side via the flywheel F and clutch C, and is transmitted to the intermediate shaft 6 from the male spline 62 on the other end side. 63, the force is transmitted to the dynamometer D connected to the flange 43 of the rotating cylindrical member 4 via the female spline 42 of the rotating cylindrical member 4 that meshes with this.

At this time, even if the intermediate shaft 6 attempts to move in the axial direction within the rotating cylindrical member 4, the tip 71a of the set pin 71 of the retaining device 7 fits into the groove 64a of the small diameter portion 64 of the intermediate shaft 6 and maintains its position. Regulate and prevent slippage. That is, the set pin 71 attempts to move outward within the hole 45 and the center hole 72a against the spring 73 due to the centrifugal force accompanying the rotation, but the ball 74 quickly receives the centrifugal force and moves outward within the inclined hole 72b. flange 71 of the set pin 71.
Since the set pin 71 is prevented from moving outward any further, the set pin tip 71
a does not slip out of the groove 64a.

Engine of another model, e.g. flywheel F
When trying to measure the power of an engine with a different thickness FL in the figure, for example, remove the fixed outer cylinder 3 from the support member 1, and remove the tip 6 at one end of the intermediate shaft 6.
1 and male spline 62 to bearing P and clutch C.
After removing and pulling it out, the rotating cylindrical member 4 and the intermediate shaft 6 are rotated, and the retaining device 7 is positioned at the upper side as shown by the two-dot chain line in FIG. Then,
Since no centrifugal force acts in this non-rotating state, the set pin 71 is biased by the spring 73 and pressed downward (to the shaft hole 41), and the ball 74 also separates from the flange 71c of the set pin and moves down the inclined hole 72b. It rolls to the side and falls. In this state, pull up the set pin 71 in the direction shown by the arrow in the figure, pull out its tip 71a from the groove 64a of the intermediate shaft 6, and remove the set pin 71 from the intermediate shaft 6.
Pull out the other end from the rotating cylindrical member 4 in the direction shown by the white arrow. After that, select the intermediate shaft 6 that is compatible with the new engine E, and while pulling up the set pin 71 on the other end side in the same manner as above, remove the rotating cylindrical member 4.
The reassembly is completed by inserting the set pin into the shaft hole 41 and fitting the tip 71a of the set pin into the groove 64a.

The rotating shaft joint according to the present invention includes a plurality of types of intermediate shafts in which one end side of the connecting means provided at both ends corresponds to a connecting mechanism of different types of drive systems, and is rotatably supported by a support member, and one end is connected to a driven system. It consists of one type of rotating cylindrical member equipped with a connecting means and a retaining device that can be connected to and detached from the other end of the intermediate shaft, and the intermediate shaft can be adjusted by selecting the intermediate shaft according to the type of drive system. Since different types of drive systems and driven systems are connected through the connector, when connecting different types of drive systems whose connecting means have different dimensions and a driven system whose connecting means have constant dimensions, one end side is adapted to the dimensions of the drive system. By simply selecting the intermediate shaft and fitting the other end into the rotating cylindrical member, the driving system and the driven system can be connected in a short time, and the cost of the shaft joint can also be reduced.

Further, since the rotating cylindrical member is provided with a retaining device, the intermediate shaft can be released and fixed simply by operating the device when rotation is stopped, and the intermediate shaft can be easily attached and detached from the rotating cylindrical member.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of a conventional shaft joint, FIG. 2 is a vertical cross-sectional view of an embodiment of the present invention, and FIG. 3 is an enlarged view of a main part of a shaft slip-off prevention device according to the present invention. 1; Support member, 3; Fixed outer cylinder, 4; Rotating cylindrical member, 6; Intermediate shaft, 7; Stopping device, 71; Set pin, 74; Ball, C; Drive system (clutch), D; Driven system (power Total), E: Drive system (engine), F: Drive system (flywheel), H: Drive system (flywheel housing).

Claims (1)

[Claims] 1. Multiple types of intermediate shafts in which one end side of the connection means provided at both ends is compatible with connection mechanisms of different types of drive systems,
It consists of one type of rotating cylindrical member that is rotatably supported by the support member, has one end connected to the driven system, and is equipped with a connecting means and a retaining device that can be fitted into and removed from the other end of the intermediate shaft, and is connected to the driven system. A rotary shaft joint that connects dissimilar drive systems and driven systems via the intermediate shaft by selecting the intermediate shaft according to the type.