JPH0714675Y2 - Side clutch brake structure - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a side clutch brake structure to be installed in a traveling mission case or the like.

(B) Conventional technology Conventionally, in a mission case for traveling such as a combine,
There has been a side clutch brake structure in which a hydraulic actuator is provided on the outside of the traveling mission case and the mesh clutch device and the brake device in the mission case are turned on and off.

(C) Problems to be Solved by the Invention However, in the above-mentioned traveling mission case, a hydraulic device such as a hydraulic pump or a hydraulic directional control valve is required to operate the hydraulic actuator, which increases cost and weight. Has a drawback that it is heavy and therefore consumes much power.

Further, there is a problem in that a mounting space for the hydraulic device is required, and the entire machine body becomes large.

(D) Means for Solving the Problems In the present invention, a side clutch gear body provided integrally with an output gear is loosely fitted on the side clutch shaft, and a ball hole is formed in the boss portion of the side clutch gear body. A steel ball is loosely fitted in the ball hole and the recessed hole provided on the outer periphery of the side clutch shaft, and the side clutch mechanism is configured by engaging and disengaging the clutch operating member provided on the outer periphery of the side clutch gear body. On the outer circumference of the body, rotatable brake discs and fixed pressure plates are alternately arranged in a combination, and pressed by an actuating actuator to form a brake mechanism, and the actuating actuator is a side clutch gear body. It does not provide a side clutch brake structure characterized by being configured to operate the brake mechanism by the rotational force of It is what

Further, while the tapered conical portion provided on the clutch actuating body and the tapered fitting hole provided on the actuating actuator are freely engageable and disengageable, a rotational force is applied to the actuating actuator and a fixed side actuator provided opposite to the actuating actuator is provided. It is also characterized in that a steel ball is positioned between and, so that the actuating actuator can be actuated in the axial direction.

(E) Action / effect A steel ball fitted between the side clutch shaft and the side clutch gear body that is loosely fitted on the side clutch shaft,
While engaging and disengaging the clutch actuating body and the side clutch on / off fork, the side clutch is turned on and off.
A brake mechanism constituted by a rotatable brake disc and a fixed pressure plate provided on the outer periphery of the clutch actuation body is operated by the turning force of the clutch actuation body fitted to the side clutch gear body.

Therefore, since the on / off action of the side clutch mechanism is reliable, the brake acts by the turning force of the side clutch gear body and the clutch actuation body.
Although the structure is compact, a large braking force can be obtained.

Further, as compared with the conventional one, a hydraulic actuator and a hydraulic directional control valve are not required, so that the cost is low and the maintenance is easy. Since the number of parts can be reduced, the weight of the machine body can be reduced, and the machine body can be downsized as a whole.

(F) Embodiments An embodiment of the present invention will be described in detail with reference to the drawings. (1) is a traveling transmission case, in which a side clutch shaft (2) is rotatably arranged at a lower portion. (3) is a transmission gear that is fixed to the center of the side clutch shaft (2) by spline fitting, and rotates side clutch gear bodies (4) and (4 ') on the left and right side clutch shafts (2). It is freely fitted. (4-1) and (4-1 ') are drive gears that transmit power to the axle (5) side and are integrally formed on the inner side of the side clutch gear bodies (4) and (4'). Reference numerals (4-2) and (4-2 ') are spline shaft portions integrally formed on the outer side portions of the side clutch gear bodies (4) and (4'), and four ball holes (6) and (6) are provided around the spline shaft portions. ′) Is drilled.

Then, the ball concave hole (7) having a concave shape on the side clutch shaft (2) side in conformity with the ball hole (6) (6 ') position.
(7 ') is provided, and steel balls (8) and (8') are fitted in the ball holes (6) and (6 ') and the ball recessed holes (7) and (7'), respectively.

(9) (9 ') are left and right side clutch gear bodies (4)
A clutch actuating member axially slidably provided on the outer circumference of the boss (4-3) (4-3 ') of (4'), the outer side of the clutch actuating members (9) (9 ') being the clutch. Gear body (4)
The spline shaft portions (4-2) and (4-2 ') of (4') are fitted together so that they can rotate together. A recess (10) is formed in the inner diameter of the central portion of the clutch actuating body (9) (9 ').
(10 ') is formed. (11) (11 ') is an inclined surface,
(12) and (12 ') are spline fitting portions formed on the outer side of the clutch actuating bodies (9) and (9') to have a small diameter.

Reference numerals (13) and (13 ') denote groove-shaped recesses provided on the outer periphery of the inner side of the clutch actuating bodies (9) and (9'), into which the side clutch on / off forks (14) and (14 ') are fitted.

Reference numerals (15) and (15 ') are lateral conical portions formed in the vicinity of the groove-shaped concave portions (13) and (13'), and friction materials are attached to the conical portions (15) and (15 '). .

(16) and (16 ') are spline parts formed in the axial direction on the outer periphery of the clutch actuating bodies (9) and (9'), and both sides are on the outer periphery of the spline parts (16) and (16 '). Brake discs (17) (17 ') having friction material on the surface and disc-shaped pressure plates (18) (18') having protrusions (18-1) (18-1 ') on the outer periphery are alternately located I am letting you.

(19) and (19 ') are return springs that press the clutch actuating bodies (9) and (9') toward the center side. (20) and (20 ') are ball bearings (21) at both left and right ends of the side clutch shaft (2). (2
1 ') is a side brake case that is axially supported by the side brake case and is fixed to both sides of the traveling mission case (1), and has protrusions (22) (22) (22) (22) toward the inside of the mission case (1) on the inner side. ′) Is integrally formed and the pressure plates (18) and (18 ′) are fitted therein.

The protrusions (18-1) (18-1 ') of the pressure plates (18) (18') contact the notches (23) (23 ') of the side brake cases (20) (20'). I try to contact them.

Reference numerals (24) and (24 ') denote actuating actuators provided in contact with the insides of the brake discs (17) and (17') and the pressure plates (18) and (18 '), which are alternately located in combination, and have an outer peripheral cross section of L. The side clutch gear body (4) (4 ') has a conical shape (1) with a tapered fitting hole (25) (25') provided inside thereof.
5) It can be engaged and disengaged with (15 ').

Further, the outer side portions of the actuating actuators (24) (24 ') are in contact with the pressure plates (18) (18') so as to be able to press them, and the step portions (26) (2
6 ') is provided with recesses (27) (27') at three positions to position the steel balls (28) (28 ').

(29) (29 ') are actuating actuators (24) (24')
Is a fixed-side actuator that fits into the bosses (24-1) (24-1 ') of the side brake case (20) (20') and inside the protrusions (22) (22 '). 30) (30 ') is fixed. (31) and (31 ') are retaining rings provided on the boss portions (24-1) and (24-1') of the actuating actuators (24) and (24 '), and (32) and (32') are fixed side actuators ( 24) The steel balls (28) and (28 ') are located in the recesses provided on the inner surface of the (24').

(33) and (33 ') are side clutch mechanisms composed of the side clutch shaft (2), side clutch gear bodies (4) and (4'), clutch actuating bodies (9) and (9 '). Further, the brake mechanism (34) (3 ') is formed by the brake discs (17) (17'), pressure plates (18) (18 '), actuating actuators (24) (24'), etc.
4 ').

The embodiment of the present invention is configured as described above, and when power is transmitted to the transmission gear (3) fixed on the side clutch shaft (2), the side clutch shaft (2) rotates.

Then, as shown in the right side of FIG. 2, when the right side clutch on / off hawk (14 ') is moved to the center side and the clutch actuating body (9') is located on the left side, the clutch actuation is performed. Since the spline fitting portion (12 ') of the body (9') is located on the outer periphery of the ball hole (6 ') of the clutch gear body (4'), the steel ball (8 ') is attached to the side clutch shaft. The ball concave hole (7 ') of (2) and the ball hole (6') of the side clutch gear body (4 ') are fitted. Therefore, in this state, the side clutch is engaged and the side clutch shaft ( The power of 2) is transmitted to the clutch gear body (4 ') and is transmitted to the axle side below the drive gear (4-1').

Contrary to the above, as shown on the left side of FIG. 2, the left side clutch on / off hawk (14) is moved to the outside to compress the return spring (19) and the clutch actuation body (9). Is moved to the left, the steel ball (8) projects from the recessed hole (7) of the side clutch shaft (2) and fits into the recessed portion (10) of the clutch actuating body (9). Therefore, the power of the side clutch shaft (2) is not transmitted to the side clutch gear body (4) and the side clutch is disengaged.

Then, when the side clutch gear body (4) does not stop rotating, when the clutch actuating body (9) is further pushed to the left side, the conical portion (15) of the clutch actuating body (9) becomes the actuating actuator (24). Fit into the tapered fitting hole (25). Then, while rotating the actuating actuator (24), the steel ball (28) acts in a riding-up manner between the recess (27) and the recess (32) of the fixed-side actuator (29), and the actuating actuator is moved. Move (24) to the outside.

The actuating actuator (24) presses the brake disc (17) and the pressure plate (18) to actuate the brake mechanism (34), and the side clutch shaft (2).
Is to stop the rotation of.

As described above, according to this embodiment, the side clutch shaft (2)
And a steel ball (8) (8 ') fitted between the side clutch gear body (4) (4') loosely fitted on the simultaneous side clutch shaft (2), and a clutch actuating body (9). (9 '),
And a rotatable brake disc (17) provided on the outer circumference of the clutch actuating body (9) (9 ') while engaging and disengaging the side clutch by engaging and disengaging the side clutch on-off forks (14) (14'). The side clutch gear body (4) is provided with a brake mechanism (34) (34 ') composed of a fixed pressure plate (18) (18') and a fixed pressure plate (17 ').
The brake mechanism (34) (34 ') is operated by the turning force of the clutch actuating body (9) (9') fitted in (4 ').

Therefore, the on / off action of the side clutch mechanism (33) (33 ') is reliable, and the braking action is exerted by the turning force of the side clutch gear bodies (4) (4') and the clutch actuating bodies (9) (9 '). Therefore, the structure is compact and a large braking force can be obtained.

Further, as compared with the conventional one, a hydraulic actuator and a hydraulic directional control valve are not required, so that the cost is low and the maintenance is easy. Since the number of parts can be reduced, the weight of the machine body can be reduced, and the machine body can be downsized as a whole.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is an overall front view of a traveling mission case, FIG. 2 is a front sectional view of an essential part of the present invention, and FIG. 3 is FIG. FIG. 4 is a plan view seen from the line I, and FIG. 4 is a sectional view of the actuating actuator portion. (2): Side clutch shaft (4) (4 '): Side clutch gear body (4-1) (4-1'): Output gear (4-3) (4-3 '): Boss (6) (6 '): Ball hole (7) (7'): Recessed hole (8) (8 '): Steel ball (9) (9'): Clutch activator (14) (14 '): With side clutch Cutting fork (15) (15 '): Tapered conical part (17) (17'): Brake disc (18) (18 '): Pressure plate (24) (24'): Actuator (25) (25) ′): Tapered fitting hole (29) (29 ′): Fixed side actuator (33) (33 ′): Side clutch mechanism (34) (34 ′): Brake mechanism

Claims (2)

[Scope of utility model registration request] 1. A side clutch gear body (4) (4 ') integrally provided with an output gear (4-1) (4-1') is loosely fitted on a side clutch shaft (2) to form the same. Boss (4-3) (4-3 ') of the side clutch gear body (4) (4')
Ball holes (6) and (6 ') are drilled in the
Steel balls (8) and (8 ') are loosely fitted in concave holes (7) and (7') provided on the outer periphery of (6 ') and the side clutch shaft (2),
The side clutch mechanism (33) (33 ') is configured by engaging and disengaging the clutch operating bodies (9) (9') provided on the outer circumferences of the side clutch gear bodies (4) (4 '). 9) Rotatable brake discs (17) (17 ') and fixed pressure plates (18) (18') are alternately arranged on the outer periphery of the outer periphery of (9 '), and an actuating actuator ( Brake mechanisms (34) and (34 ') are configured by being pressed by 24 (24'), and the actuating actuators (24) and (24 ') are used to rotate the side clutch gear bodies (4) and (4'). Brake mechanism by (34)
A side clutch brake structure characterized by being configured to actuate (34 '). 2. A tapered conical portion (15) (15 ') provided on the clutch actuating body (9) (9') and a tapered fitting hole (25) provided on the actuating actuator (24) (24 ').
The fixed actuator (29) (provided to oppose the actuating actuators (24) and (24 ') while giving rotational force to the actuating actuators (24) and (24') while enabling engagement and disengagement with the (25 '). Steel balls (28) (2) between
8 ′) and position the actuating actuators (24) (2
4. The side clutch brake structure according to claim 1, wherein 4 ') is configured to be axially operable.