JPH0453205Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a management work machine that performs tasks such as tilling, weeding, etc.

(Prior art) As described in, for example, Japanese Utility Model Application Publication No. 61-152207, a management work machine is equipped with a rotary behind one running wheel or a pair of left and right running wheels, and operates on the rotary while running on the running wheels. Plowing, weeding, etc. are performed, and to prevent the soil from scattering in all directions when plowing with a rotary rotary, the rotary is covered with a rotary cover.

This rotary cover consists of an upper cover that covers the top of the rotary, a front cover that covers the front side (that is, the wheel side), a side cover that covers the left and right sides, and a rear cover that covers the rear side. When attaching to the left and right ends of the cover and performing soil filling work by blowing soil to the left and right sides, rotate the side cover upwards to secure it and open the left and right sides of the rotary. There is.

(Problem to be solved by the invention) In the rotary cover described above, the front cover is provided to prevent soil plowed by the rotary from scattering toward the wheels, but it is necessary to keep this front cover long. If the soil is soft or the soil is plowed deeply, the lower end of the front cover may hit the ground, which may interfere with driving.

(Means for Solving the Problems) Therefore, the present invention allows the front cover to be attached and detached with a simple operation, and is configured as follows. That is, in a management work machine in which a rotary 16 is attached to a work shaft 15 protruding from a transmission case 10 provided approximately at the left and right center of the machine body, and the rotary 16 is covered with a rotary cover 11, the rotary A groove 26 is provided in the left and right center of the front cover 23 that covers the front upper side of the
is fitted onto the projecting edge 13 of the transmission case 10, and the mounting bracket 24 of the front cover 23 is attached to the body with one bolt 25.

(Operations and effects of the invention) According to the above structure, the front cover 23 can be attached and detached from the fuselage with one bolt 25, so the workability is good, but when the front cover 23 is attached to the fuselage, , a groove 26 provided in the front cover 23
is fitted onto the protruding edge 13 of the transmission case 10, so even if the front cover 23 is hit by dirt, the front cover 23 will not rotate about the bolts 25.

Also, when installing the front cover 23, the bolts 25 are tightened while the groove 26 is fitted onto the protrusion 13 of the transmission case 10.
This will ensure that it is attached to the specified position.

(Example) Next, an example of the present invention will be described with reference to the drawings.

A gearbox 1 is provided in the center of the fuselage, a support 2 is provided protruding forward from the gearbox 1, a prime mover 3 is mounted on the support 2, and power is transmitted from the prime mover 3 by belt transmission. gearbox 1
It is transmitted to 4 is a belt cover that covers the belt transmission section.

Also, below the gear box 1 is a transmission case 5.
A running wheel 7 is mounted on an axle 6 at the lower end of the transmission case 5.

Furthermore, a frame 8 for a working machine such as a rotary is attached to the rear side of the gearbox 1. This work machine frame 8 is installed by fitting bolts 9 protruding from the frame 8 side into holes on the gearbox 1 side and tightening them with nuts 70.

A transmission case 10, a rotary cover 11, and a resistance rod 12 are attached to the working machine frame 8.

The transmission case 10 is formed into a hollow shape with symmetrical case frames made of sheet metal facing each other, houses a chain transmission mechanism therein, and has a protruding edge 13 formed around the periphery joined by bolts or seamless welding. are doing.

A belt transmission mechanism 14 for performing belt transmission between the transmission case 10 and the gearbox 1 is detachably provided at the upper end of the transmission case 10 on the input shaft side. Further, a rotary 16 is attached to the working shaft 15 of the transmission case 10.

The rotary cover 11 attached to the work machine frame 8 above the rotary 16 is attached to the upper cover 17.
is attached to the frame 8, side covers 18 are attached to the left and right ends of the upper cover 17 with hinges 19, and a rear cover 20 made of a rubber plate is attached to the rear end.

The left and right side covers 18, 18 are connected by a connecting rod 21 so that they can be opened at an appropriate angle.

Further, an auxiliary cover 22 is provided at the rearward and downwardly bent portion of the upper cover 17 to cover a space behind the side cover 18 that is created when the side cover 18 is opened.

On the front side of the upper cover 17, there is a front cover 23 that extends left and right from the left and right center toward the front, and a bracket 24 attached to the center by welding is attached to the bottom of the work equipment mounting frame 8 by bolts 25. At the same time, the grooves 26 provided at the upper ends of the left and right centers are fitted onto the projecting edges 13 of the transmission case 10.

A mounting base 27 is fixed to the top of the gearbox 1 with bolts, etc., and a handle base 2 is attached to the top of the mounting base 27.
8 is rotatably attached with a rotation shaft support 71. The rotation shaft support 71 is formed in a hollow shape and pivotally supports substantially the center of the handle base 28. The handle base 28 has a horizontal shaft 30 that pivots the lower end of a control handle 29 branched to the left and right.
A grip part 31 on the upper end side of the handle 9 is made vertically rotatable.

The handle base 28 is provided with a horizontal rotation position fixture 33 on which the pin 32 appears and retracts, and the mounting base 27
The pins 32 are fitted into a plurality of holes (not shown) provided on the same circumference with respect to the center of rotation, thereby regulating the horizontal rotation position.

Further, a vertical movement position fixture 34 for regulating the vertical movement of the operating handle 29 is provided on the handle base 28 at a position symmetrical to the horizontal rotation position fixture 33 with respect to the left-right center. This vertical movement position fixing device 34 has a pin 35 that is fitted into one of the upper and lower holes (not shown) of a locking piece 36 fixed to the operating handle 29, so that the handle 29 is fixed. .

The horizontal rotation position fixing device 33 and the vertical movement position fixing device 34 are connected to a horizontal rotation position adjustment lever 37 and a vertical movement position adjustment lever 38 provided on the operating handle 29 by wires 39 and 40, respectively.
It can be operated from the control handle 29 side.

Further, the control handle 29 includes a clutch lever 41 that connects and disconnects power transmission to the running wheels 7, and a prime mover 3.
A throttle lever 42 is provided to change the rotation speed of the wire 4, which is passed through a hole in the rotating shaft support 71.
3 and 44 are connected to the respective operating parts.

On the side of the gearbox 1, there is a traveling speed change rod 4.
5 and a rotary speed change rod 46 are protruded so as to change speed by moving in the axial direction, and a display pin 4 is provided on each.
7 and 48 are fixed vertically so as to protrude upward from the cover 49.

Furthermore, brackets 54 and 55 for pivotally supporting the boss portions 52 and 53 of the change arms 50 and 51 are attached to the side surface of the gear box 1 with bolts 72. The change arms 50, 51 engage with display pins 47, 48 of the traveling transmission rod 45 and rotary transmission rod 46, respectively, and have boss portions 52, 53 disposed above and below.

A shift operation arm shaft 56 is fitted through these boss portions 52 and 53 so as to be movable up and down. This gear shift operation arm shaft 56 includes an engaging portion 57 made of a spline and a retaining portion 5 with a partially enlarged diameter.
8, and a spring 59 causes the locking part 57 to engage with an engaging part 60 made of a spline provided on the boss part 52 of the travel shift change arm 50, so that the shift operation arm shaft 56 is slightly rotated. When lifted, it disengages from the boss portion 52 and can rotate freely, and by lifting it further upwards, the rotary gear change change arm 51 engages the engagement portion 61 made of a spline provided on the boss portion 53 to perform a gear change operation. The engaging portion 57 of the arm shaft 56 is engaged, and the rotary shift rod 46 can be operated to shift the gear.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a partial front view, Fig. 2 is a partial plan view, Fig. 3 is a partial side view, and Fig. 4 is an overall view. Front view, Figure 5 is a partial plan view, Figure 6 is a partial front sectional view, and Figure 7 is a partial front view.
The figure is a partial front sectional view, and FIG. 8 is a partial plan view. 10...Transmission case, 11...Rotary cover, 14...Protrusion, 15...Work shaft, 16...
Rotary, 23...Front cover, 24...Mounting bracket, 25...Bolt.

Claims (1)

[Scope of utility model registration request] In a management work machine, a rotary 16 is attached to a work shaft 15 protruding left and right from a transmission case 10 provided approximately at the center of the left and right sides of the machine body, and the rotary 16 is covered above with a rotary cover 11. A groove 26 is provided at the left and right center of the front cover 23 that covers the upper front side, and the groove 26 is fitted onto the protruding edge 13 of the transmission case 10, and the mounting bracket 24 of the front cover 23 is secured by one bolt. 25 is a rotary cover for management work equipment that is attached to the aircraft body.