JPH064101Y2 - Power transmission device for engine working machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial Application Field >> The present invention relates to a connecting structure at a connecting portion between an engine power take-off shaft and an input shaft of a working device in an engine working machine,
In particular, it relates to a connection structure between a power take-off shaft and an input shaft in an engine working machine in which an input shaft of a working device is connected to a flywheel of an engine.

<Prior Art> Conventionally, in an engine working machine in which an input shaft of a working device is connected to a flywheel of an engine, the flywheel is fixed to a tip end of a power take-off shaft protruding outside the machine wall of the engine, and The input flange was fixed to the tip of the input shaft, and the end wall of the flywheel and the input flange were connected via a rubber coupling.

<Problems to be Solved> However, in this case, a large number of bolts must be operated when installing the engine or the working device or when disassembling the same, which is troublesome and the workability is poor.

The present invention has been made in view of such a point, and an object thereof is to provide a connection mechanism capable of easily connecting and disassembling the engine and the working device.

<Means for Solving the Problems> In order to achieve the above object, according to the present invention, a flange insertion hole for accommodating an input flange fixed to an input shaft of a working device is provided in an outer end surface of a flywheel, and this flange is formed. A plurality of receiving flanges are integrally provided in a centripetal manner at an equal pitch from the inner peripheral surface of the opening of the insertion hole, and locking projections are provided on the peripheral surface of the input flange at regular intervals in the circumferential direction. An engaging projection is formed on either one of the side surface of the locking projection facing the working device and the side surface of the receiving collar on the engine side, and the other is formed with an engaging recess into which the engaging projection fits. The input flange is inserted into the flange insertion hole so that the locking projection and the receiving flange are opposed to each other, and the pressing means is arranged to press the input flange toward the working device.

<Action> The present invention has a plurality of recessed flange insertion holes for accommodating the input flange fixed to the input shaft of the working device on the outer end surface of the flywheel. The receiving flanges are integrally provided in a centripetal manner at equal pitches, and the locking projections are provided on the circumferential surface of the input flange at regular intervals in the circumferential direction. An engaging projection is formed on one of the side surface on the engine side of the receiving collar and an engaging recess is formed on the other side, and the input flange is inserted into the flange insertion hole. Since the pressing means that presses the input flange against the working device is arranged with the locking projection and the receiving flange facing each other,
When connecting the engine and the work equipment, the locking projection protruding on the peripheral surface of the input flange is passed through the gap between the receiving flanges to allow the input flange to be inserted into the flange insertion hole formed in the flywheel. , The input flange or the flywheel is rotated by a small angle, the receiving flange and the locking projection are opposed to each other, and the locking projection is pressed against the receiving flange by the pressing means to engage. By engaging the projection and the engagement recess,
The flywheel and the input flange will be firmly linked together. Further, when disassembling the engine and the working device, an operation reverse to that at the time of connection is performed. As a result, it becomes possible to perform a connection / disconnection operation between the engine and the work device with a simple operation.

<< Embodiment >> A drawing shows an embodiment of the present invention, FIG. 1 is an exploded perspective view of a main portion, and FIG. 2 is a vertical cross-sectional view showing a connecting structure between an engine and a working device.

In the figure, reference numeral (1) is the engine body, (2) is a generator as a working device, and the power take-off shaft (3) generator of the engine body (1)
The input shaft (4) of (2) is connected by a power take-off mechanism (5).

The power take-off mechanism (5) is composed of a flywheel (6) fixed to the tip of the power take-off shaft (3) and an input flange (7) fixed to the tip of the input shaft (4). The flywheel (6) has a recess formed in the center of the outer end surface (8) of the flywheel (6) and is formed in the insertion hole (9) of the input flange (7).
(7) is fixed to the input shaft (4) via a slide key (10) so as to be able to move in and out along the shaft core.

The input flange insertion hole (9) is formed integrally with the inner peripheral surface (12) of the opening portion (11) in a circular arc-shaped receiving collar (13) at an equal pitch in a centripetal manner. A wedge-shaped engaging recess (15) is formed in the inner surface (14) of the receiving collar (13) by notching. The diameter of the receiving flange (13) is formed to be substantially the same as the outer diameter of the input flange (7).

On the outer peripheral surface (16) of the input flange (7), eight-minute arcuate locking projections (17) are provided at equal pitches. A wedge-shaped engaging projection (19) is formed on a side surface (18) of the locking projection (17) on the working device side. A push bolt (20) as a pressing means (P) is screwed onto the input flange (7). A saddle-shaped pressing plate (21) is rotatably attached to the tip of the push bolt (20) as shown in FIG. It should be noted that one end surface of each of the engagement protrusion (19) and the engagement recess (15) is formed as a surface along the radial direction so that the rotational force can be efficiently transmitted.

In the power take-off mechanism (5) configured as described above, the locking projection (17) projecting on the outer peripheral surface of the input flange (7), the input flange insertion hole ( 9) Receiving collar (1
3) Align the position where it does not project and slide it on the input shaft to house the input flange (7) in the input flange insertion hole (9), and By rotating the flywheel (6) approximately 45 degrees, the catch collar (13) of the flywheel (6) and the locking projection (1) of the input flange (7)
7) and oppose the push bolt (20) and push plate (21).
Abutting the inner wall of the input flange insertion hole (9), and then tightening the post bolt (20),
(7) is pressed to the escape side in the input flange insertion hole (9) to form the engaging projection (19) and the receiving flange (13) protruding from the locking projection (17). By engaging the engagement recess (15), the rotational force from the flywheel (6) is transmitted to the input flange (7) by interlocking with the occlusal clutch.

4 to 6 show a modified example of the pressing means (P), and the one shown in FIG. 4 has a small diameter inside the input flange insertion hole (9) formed in the flywheel (6). It consists of a two-step hole, and the plunger (22) is fixed to the tip surface of the input flange (7), and this plunger (22) is inserted into the input flange insertion hole (9).
The small diameter hole (23) can be tightly fitted inside, and the input flange (7)
To the plunger (22) to form a pressure oil supply and discharge passage (24),
The pressure oil supply / discharge port (25) provided on the side surface of the input flange (7) on the side of the work device (2) presses the hydraulic oil into the small diameter hole (23) to remove the input flange (7) from the exit side. It is designed to be pressed against.

As shown in FIG. 5, the lever (26) is pivotally supported on the working device side of the input flange (7), and the pressing plate (27) is positioned on the tip end surface of the input flange (7) so that it can be retracted and retracted. This pressure plate (2
By connecting 7) and lever (26) with rod (28),
The pressing means (P) is formed. In the case of both the modified examples, the locking projections (17) formed on the outer peripheral surface of the input flange (7)
And a receiving collar formed on the inner peripheral surface of the input flange insertion hole (9).
(13) is formed similarly to the previous example. In addition, as shown in FIG. 6, a compression spring (2) serving as a pressing means (P) is provided between the tip end surface of the input flange (7) and the back end surface of the input flange insertion hole (9).
9) is arranged. In this case, the locking projection (17)
The engaging projections (19) and the engaging recesses (15) formed on the receiving collar (13) are formed on both end walls in the radial direction.

The engaging projection (17) may be formed with the engaging recess (15) and the receiving collar (13) may be formed with the engaging projection (19). Further, although the generator is the working device (2) in each of the above embodiments, the working device may be a pump or a traveling device of a vehicle.

<Effect> The present invention has a plurality of recessed flange insertion holes for accommodating the input flange fixed to the input shaft of the working device on the outer end surface of the flywheel. The receiving flanges are integrally provided in a centripetal manner at equal pitches, and the locking projections are provided on the circumferential surface of the input flange at regular intervals in the circumferential direction. An engaging projection is formed on one of the side surface on the engine side of the receiving collar and an engaging recess is formed on the other side, and the input flange is inserted into the flange insertion hole. Since the pressing means that presses the input flange against the working device is arranged with the locking projection and the receiving flange facing each other,
When connecting the engine and the work equipment, the locking projection protruding on the peripheral surface of the input flange is passed through the gap between the receiving flanges to allow the input flange to be inserted into the flange insertion hole formed in the flywheel. , The input flange or the flywheel is rotated by a small angle, the receiving flange and the locking projection are opposed to each other, and the locking projection is pressed against the receiving flange by the pressing means to engage. By engaging the projection and the engagement recess,
The flywheel and the input flange can be firmly interlocked and connected. Further, when disassembling the engine and the working device, an operation reverse to that at the time of connection may be performed.

As a result, it becomes possible to perform a connection / disconnection operation between the engine and the work device with a simple operation. The pressure is strong and the power of the engine can be efficiently transmitted to the work device.

[Brief description of drawings]

1 shows an embodiment of the present invention, FIG. 1 is an exploded perspective view of a main part, FIG. 2 is a vertical sectional view showing a connecting structure between an engine and a working device, and FIG. 3 is an enlarged view of a main part of a pressing means. , Figs. 4 to 6
The drawings are enlarged cross-sectional views of the essential parts showing different embodiments. 1 ... Engine body, 2 ... Working device, 3 ... Power take-out shaft, 4
... (2) input shaft, 6 ... flywheel, 7 ... input flange, 8 ... (6) outer end surface, 9 ... input flange insertion hole, 12 ...
Inner peripheral surface of (9), 13 ... Retaining collar, 14 ... Side surface of (13), 15 ... Engagement concave portion, 16 ... Outer peripheral surface of (17), 17 ... Locking protrusion, 18 ... of (17) Side surface, 19 ... engaging projection, P ... pressing means.

Claims (1)

[Scope of utility model registration request] Claims: 1. A flywheel (6) is fixed to the tip of a power take-off shaft (3) projecting from the engine body (1) to the outside of the machine wall, and the flywheel (6) is fixed to the working device (2). Input shaft (4)
In the engine working machine that is connected to the flywheel (6), the input shaft of the working device (2)
The input flange (7) fixed to (4) is internally provided with a flange insertion hole (9), and a plurality of receiving flanges are provided from the inner peripheral surface (12) at the opening of the flange insertion hole (9). (13) are integrally provided with equal pitch in a centripetal manner, and locking projections (17) are projected on the outer peripheral surface (16) of the input flange (7) at regular intervals in the circumferential direction. (17)
Engaging projection (19) on one of the side surface (18) facing the working device (2) and the side surface (14) on the engine side of the receiving collar (13).
And an engaging recess (15) into which the engaging projection (19) fits, and the input flange (7) is inserted into the flange insertion hole (9) to form a locking projection. (17) and the receiving flange (13) in a state of facing each other, engine work characterized by being configured by arranging a pressing means (P) for pressing the input flange (7) to the working device (2) side Machine power transmission device