JP3305882B2 - Rotary cover tilt adjustment device for management machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary cover inclination adjusting device for a management work machine capable of changing and adjusting the direction in which mud is scattered by a rotary using a rotary cover.

[0002]

2. Description of the Related Art Conventionally, the inner ends of both rotary covers attached above the rotary are pivotally connected to the rotary frame, respectively, and the rotary covers are tilted by both hanging fittings respectively connected to the upper surfaces of the rotary covers. When the inclination of both rotary covers is changed and adjusted in a management work machine configured to be changeable freely, for example, a 2-90
As disclosed in Japanese Patent Application Publication No. 04-204, the inclination change adjustment has been performed by manual operation by moving both suspension metal fittings up and down with a chrysanthemum seat, or by screwing or hooking.

[0003]

However, such manual operation is difficult when the rotary cover is heavy, especially in the case of fine adjustment, and it is troublesome and time-consuming. Not
The workability was poor.

[0004]

SUMMARY OF THE INVENTION The present invention solves such a problem as a problem, and makes it possible to automatically and effectively adjust both rotary covers. In a management work machine configured such that the inner end of the rotary cover is pivotally attached to the rotary frame side and the rotary cover is freely changeable in inclination by means of both suspension fittings respectively connected to the upper surfaces of the rotary covers, In the upper direction, a drive gear that can be driven forward and reverse by a motor or the like is supported by a shaft in the front-rear direction of the fuselage. Each side is formed and configured.

[0005]

Accordingly, the drive gear meshes with the upper rack of one suspension and the lower rack of the other suspension, and when the drive gear is rotated forward by a motor or the like, both suspensions move upward. The two rotary covers will move up until the drive gear stops and the desired inclination angle is reached, and the inclination will be changed automatically. By moving the bracket downward, the two rotary covers move down until the drive gear stops, so that the inclination change adjustment can be automatically and effectively performed even during work.

[0006]

FIG. 2 shows a side view of a management work machine, which is behind a management machine A equipped with both wheels 8, 8, a transmission case 9, both handlebars 10a, 19b which can be moved in the front-rear direction, an engine 11, and the like. To the rotary work machine B,
The rotary working machine B includes a rotary case 12 mounted on a front portion of the rotary frame 3, a rotary 1 mounted on the lower side of each of the rotary cases 12, and a rotary hitch 13 connected to the front portion of the rotary frame 3. The upper portion of the rotary case 12 is connected to the upper portion of the transmission case 9 via a counter case 15, and a support cylinder 16 for supporting a resistance rod or the like is mounted on the rear portion of the rotary frame 3. On both lower sides, the inner ends of the rotary covers 2a, 2b, which can cover the upper part of the rotary 1 and have side covers 17a, 17b on the outside, respectively, are connected via two hinges 18, 18, respectively. The rotary covers 2a and 2b are pivotally attached to each other so that the inclination of each rotary cover 2a and 2b can be changed and adjusted.

A rotary shaft 20 extending in the front-rear direction of the body is mounted on the inside of a gate-shaped support frame 19 erected above the rotary frame 3. A pinion 6 as an example of a slidable drive gear is fitted, and a shaft 5a of the forward / reverse rotation motor 5 erected above the rotary frame 3 and an end of the rotary shaft 20 are connected via a joint 22; On the upper surface of the operation case 23 installed near the rear of the right handlebar 10b, there are provided two switches 24a and 24b capable of performing operations of starting and stopping the forward and reverse rotation of the motor 5; The motor 5 is mounted on the side of the rotary frame 3 and
0 and the rotary case 12
The upper part can take out the power from the counter case 15 so that the rotary shaft 20 can be driven forward and reverse through a clutch.

The lower ends of the hanging members 4a, 4b are rotatably connected to connecting pieces 25, 25 fixed on the upper surfaces of the rotary covers 2a, 2b via connecting pins 26, 26, respectively. Long holes 27a, 27b are formed on the outer surfaces on the upper side of the hanging fittings 4a, 4b so as to be narrow enough to be fitted with the rotary shaft 20 and extend in the longitudinal direction, respectively, and both hanging fittings 4a, 4b are formed. On the inner surface on the upper side of the
Long grooves 28a, 28b each having a wide width that is substantially the same as the outer diameter of the pinion 6 connected to 7a, 27b, respectively.
Are extended in the longitudinal direction, and racks 7a and 7b meshing with the pinion 6 are formed over the entire length below one long groove 28a and below the other 28b, respectively. The metal fittings 4a and 4b have upper limit micro switches 29a and 29b which are located at the lower end sides of the long holes 27a and 27b and can stop the motor 5 when they come into contact with the rotating shaft 20, and upper ends of the long holes 27a and 27b. The lower limit microswitch 30a, which can stop the motor 5 when it is positioned on the
30b are mounted respectively.

A peripheral groove 31 is formed around the intermediate portion of the pinion 6.
The shifter 32 engaged with the peripheral groove 31 is installed so as to be movable in the axial direction of the rotary shaft 20 along parallel upper and lower guide rods 33 and 34 mounted in the support frame 19. An operation lever 36 is provided on the operation case 23 so as to be linked to the shifter 32 via a push-pull wire 35.
Into the locking grooves 37a, 37b, 3 at both ends and the center.
An operation groove 37 having an operation groove 7c is formed so that the pinion 6 can be moved in the axial direction by the operation lever 36. The shifter can be moved by a shifter rod, or the operation case can be mounted on the operation case. It is also possible to adopt a configuration in which the moving operation can be performed using an electromagnetic solenoid that can be operated by a provided switch.

The hinges 18 may be provided with springs for biasing the rotary covers 2a and 2b upwardly.

Therefore, as shown in FIG. 8, the operating lever 36 is engaged with the locking grooves 37c for operating the both hanging members 4a and 4b.
4, both ends of the pinion 6 are engaged with the racks 7a and 7b, respectively, and both rotary covers 2a and 2b are horizontal as shown in FIG. When the switch 24a is pressed with a hand operating the steering wheel to raise the covers 2a and 2b, the motor 5 starts rotating forward and the pinion 6 rotates forward as shown by an arrow A in FIG. Then, while the pinion 6 meshes with the racks 7a and 7b,
a and 4b can be moved upward to intersect, and the rotary covers 2a and 2b can be set to a desired inclination angle while the rotation of the pinion 6 is stopped by pressing the switch 24a on the way. As shown in the figure, the two rotary covers 2a and 2b can be automatically tilted by being largely moved upward, so that the digging work can be performed as shown in FIG. When the operator presses the lowering switch 24b, the pinion 6 reverses as shown by the arrow B in FIG.
The two hanging brackets 4a,
As shown in FIG. 1, both rotary covers 2a and 2b can be moved downward while moving 4b downward, so that the inclination change adjustment can be automatically and effectively performed even during work.

For example, when the mud is scattered to only one side at the inner end of the house in the house operation, the operation lever 3b is inserted into the locking groove 37b for the left side, and the shifter 32 is moved by the push-pull wire 35. Activate the pull,
As shown in FIG. 9, the pinion 6 can be operated so as to be separated from the rack 7b of the hanging bracket 4b and to mesh with only the rack 7a of the hanging bracket 4a. With the cover 2b lowered, as shown in FIG.
a can be changed, the mud can be scattered only on one side, and when the operation lever 36 is inserted into the locking groove 37a for the right side, the pinion 6 is connected to the hanging fitting 4a. By separating from the rack 7a and engaging only with the rack 7b of the hanging fitting 4b, only the rotary cover 2b can be tilted while the rotary cover 2a is lowered.

When the motor 5 is moved up and down by forward and reverse rotation of the motor 5, the upper and lower positions of the upper and lower switches 29 a and 29 b and the lower and upper micro switches 29 a and 29 b, regardless of whether the two hanging members 4 a and 4 b are used. Switch 3
The motors 0a and 30b operate to stop the motor 5 automatically, so that burning of the motor 5 and damage to the pinion 6 and the racks 7a and 7b can be effectively prevented.

[0014]

As described above, according to the present invention, the drive gear 6 includes the upper rack 7a of one of the hanging members 4a and the other hanging member 4b.
The lower rack 7b meshes with the lower rack 7b, so that the drive gear 6 is simply rotated in the normal or reverse direction by the motor 5 or the like, and the two hanging brackets 4a, 4b
Can be moved up and down at the same time, and the heavy rotary covers 2a and 2b can be automatically and effectively tilt-changed. The inclination of both rotary covers 2a and 2b can be adjusted while setting the scattering direction and the distance of the mud, so that the workability can be further improved, and both hanging brackets 4a and 4b are provided.
It has a feature that the racks 7a and 7b can be formed in a simple structure and can be suitably implemented.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a main part that is a cross section taken along line II of FIG. 3;

FIG. 2 is a side view schematically showing a management work machine.

FIG. 3 is a side view showing a main part of the embodiment of the present invention.

FIG. 4 is a side sectional view showing a part of FIG.

FIG. 5 is an exploded view showing a part of FIG. 1 in section.

FIG. 6 is an operation explanatory view showing an operation state of FIG. 1;

FIG. 7 is a rear view schematically showing a working state of the machine body.

FIG. 8 is a plan view showing a part of FIG. 2;

FIG. 9 is an operation explanatory view showing an operation state of FIG. 4;

FIG. 10 is an operation explanatory view showing an operation state of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotary 2a Rotary cover 2b Rotary cover 3 Rotary frame 4a Hanging bracket 4b Hanging bracket 5 Motor 6 Pinion 7a Rack 7b Rack

Claims (1)

(57) [Claims] An inner end portion of both rotary covers (2a, 2b) attached above the rotary (1) is pivotally connected to the rotary frame (3), respectively, and both rotary covers (2a, 2b).
In the management work machine in which the tilting of the rotary covers 2a and 2b is made adjustable by the two suspension fittings 4a and 4b respectively connected to the upper surface of the rotary frame 3, the rotary frame 3 can be driven forward and reverse by a motor 5 or the like in the upper direction. A drive gear 6 is mounted on a shaft in the front-rear direction of the fuselage.
A rotary cover tilt adjusting device, wherein longitudinal racks 7a and 7b meshing with the drive gear 6 are formed on a and 4b such that one is on the upper side and the other is on the lower side.