JP3168749B2 - Tractor mower interlocking cover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interlocking cover for a tractor mower, which facilitates attaching and detaching the mower and prevents noise.

[0002]

2. Description of the Related Art In a front mower, since a mower is mounted on the front side of a tractor body, an interlocking shaft or a gear case for interlocking the mower from a power take-off shaft is located near the front of the operator. And are susceptible to noise. In addition, an interlocking cover is provided to prevent the noise. However, the interlocking cover makes it difficult to attach and detach the mower, and the lifting and lowering movement with respect to the vehicle body is not easily performed. The defect is eliminated.

[0003]

According to the present invention, a lift arm 3 for mounting a front mower 2 is pivotally supported 4 near a power take-out shaft PTO on the front side of a vehicle body 1, and the lift arm 3 is attached to the power take-out shaft PTO. Interlocking axis 5 that interlocks between
A tractor mower interlocking cover is formed by pivotally supporting an interlocking cover 6 that covers the tractor up and down.

[0004]

The lift arm 3 can be turned up and down around the pivot 4 near the power take-off shaft PTO, so that the mower 2 attached to and detached from the lift arm 3 can be raised and lowered with respect to the vehicle body 1. be able to. Due to the vertical movement of the lift arm 3, the interlocking cover 6 attached to the lift arm 3 also swings up and down together with the interlocking shaft 5 to maintain the relation with the interlocking shaft 5 almost constant. Such an interlocking cover 6 prevents upward divergence of interlocking noise caused by a universal joint or the like in the interlocking shaft 5 from the power take-out shaft PTO to the mower 2.

When the mower 2 is attached and detached, the interlocking cover 6 is pivoted upward around the pivot 7 with respect to the lift arm 3 so that the interlocking cover 6 can be easily attached and detached without being obstructed. It can be carried out.

[0006]

1 to 8, a tractor body 1 has a cockpit 8, a steering wheel 9, a floor step 10 and the like at the front, and a front wheel 11 and a steerable rear wheel 12 and the like. The vehicle can be driven and driven by the engine E under the hood 13. A power take-out shaft PTO projects forward from the front end of the vehicle body 1 below the floor step 10, so that the coupling 14 of the interlocking shaft 5 on the side of the mower 2 can be connected by spline fitting.

A lift arm 3 is mounted on the left and right upper portions of the power take-out shaft PTO by a pivot 4 so as to be vertically rotatable. The lift arm 3 includes left and right sockets 1
5 are integrally connected by a horizontal frame 16 made of a pipe material, cylinder arms 17 are integrated on both left and right sides of the horizontal frame 16, and the pivotal support 7 having a grommet-shaped pin hole at the center protrudes. I have. The pivot 7 is located above the power take-out shaft PTO.

The lift arm 3 is connected between the cylinder arm 17 and the vehicle body 1 by a hydraulically expandable and contractible lift cylinder 18.
Is pivoted up and down around the pivot 4. The lift cylinder 18 is provided with the left and right cylinder arms 1.
7 may be attached, but if the mower is small, it may be provided only on one cylinder arm 17 side. A pin connection is made between the cylinder arm 17 and the lift cylinder 18. The socket 15 is a square pipe,
The rear ends of the left and right connecting arms 21 attached to the upper side of the mower deck 20 are inserted and secured with the pins 19.

A pair of right and left regulating links 23 is provided between the rear end of the mower deck 20 and a bracket 22 mounted around the power take-off shaft PTO of the vehicle body 1. Can be attached to and detached from the bracket of the mower deck 20 with the pins 24. A long hole 26 is formed in the restriction link 23, and an integral pin 25 is inserted through the bracket 22 to restrict the rotation angle of the mower 2 that rotates vertically with respect to the vehicle body 1.

When attaching / detaching the mower 2 to / from the vehicle body 1, attaching / detaching the connecting arm 21 to / from these sockets 15, attaching / detaching the regulating link 23 to / from the mower deck 20 with the pin 24, and connecting the interlocking shaft 5 to the power take-out shaft PTO. This can be performed by attachment / detachment by the coupling 14 or the like. The mower 2 is provided with a plurality of blades 28 that are rotated around a blade shaft 27 in a vertical direction below the mower deck 20.
9 are linked. Reference numeral 30 denotes a transmission cover that covers a belt transmission mechanism and the like on the mower deck 20. On both left and right sides of the mower deck 20, brackets 3 are provided.
1, a rear end of the connecting arm 21 is detachably provided by a pin 35, and a gauge wheel 32,
A configuration is adopted in which a wheel frame 34 having 33 is mounted.

The interlocking shaft 5 has a universal joint 51 at the front and rear to transmit power, and the mower 2 can transmit mowing while swinging up and down with respect to the vehicle body 1. A discharge cover 36 covers the upper side of the discharge port 37 of the mower deck 20. 38 is a roller. A rod 39 regulates a lower limit position of the rear end of the mower deck 20 with respect to the connecting arm 21.
1 and the upper end is a bracket 42 of the connecting arm 21.
Is slidably fitted into the rod hole of the above, and a stopper 43 adjustably attached to the upper portion thereof is locked to the bracket 42 to lock the lowered position. 44 is an auxiliary step,
It is attached to a wheel frame 34.

The interlocking cover 6 is formed in a cross-sectional gate shape that covers the interlocking shaft 5, and has side edges formed on both left and right sides to approach the upper surface of the transmission cover 30 above the mower deck 20, and is as wide as possible. The upper part of the mower deck 20 is configured to be covered. At the rear end of the interlocking cover 6, a bracket 47 is provided to
The pin 48 is pivotally mounted on the pin 48 so as to be vertically rotatable. Further, hooks 45 are provided on both sides of the front end of the interlocking cover 6, and can be attached by being engaged with a rubber socket 46 on the upper surface of the transmission cover 30.

FIG. 9 is different from the above example in that a hook 49 is provided on the vertically rotatable interlocking cover 6 so that the hook 49 can be engaged with a bumper 50 at the front end of the upper body 1. It is. In such a configuration of the interlocking cover 6, with the hook 45 removed from the socket 46, the interlocking cover 6 is pivoted upward around the pin 48 to engage the hook 49 with the bumper 50. By rotating the mower deck 20 upward about the pin 35 for the pivot 4 and the connecting arm 21 to exchange the blade 28 with the blade shaft 27,
The work when attaching and detaching the universal joint 51 and the cup link 14 can be facilitated.

FIGS. 10 and 11 are different from the above example in that a hook 49 which can be moved into and out of the interlocking cover 6 is engaged with the bumper 50 and the interlocking cover 6 is suspended in an open state. It is. 12 and 13,
An engine room that accommodates an engine E and the like covered by a bonnet 13 is shown. The cockpit 8 has a front side of the hood 13 and intake ports 54 and 55 covered by intake nets 52 and 53 on both left and right sides. Inner covers 56, 57 are provided at appropriate intervals along the inside of the intake ports 54, 55, and are sucked into the engine room E from the respective intake ports 54, 55 by the rotation of the radiator fan 58 at the rear end. This is to guide the external air to be blown in a certain direction such as a vertical direction. 59 is a fuel tank, 60 is an exhaust pipe, 61 is a radiator, and 62 is an air cleaner.

[Brief description of the drawings]

FIG. 1 is a perspective view of a mower.

FIG. 2 is a perspective view showing a partially disassembled state.

FIG. 3 is a perspective view showing a state of being attached to a tractor.

FIG. 4 is a side view thereof.

FIG. 5 is a front view of a part thereof.

FIG. 6 is a perspective view of a discharge cover unit.

FIG. 7 is an overall perspective view.

FIG. 8 is a plan view thereof.

FIG. 9 is a perspective view showing another embodiment.

FIG. 10 is a side view showing a partly different embodiment.

FIG. 11 is a perspective view thereof.

FIG. 12 is a front sectional view of an engine room.

FIG. 13 is a side view of the tractor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Front mower 3 Lift arm 4 Pivot 5 Interlocking shaft 6 Interlocking cover 7 Pivot PTO Power take-out shaft

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A01D 34/412-34/90

Claims (1)

(57) [Claims] 1. A lift arm 3 for mounting a front mower 2 is pivotally supported 4 near a power take-out shaft PTO on the front side of a vehicle body 1,
The power take-off shaft PTO and the mower 2
An interlocking cover of a tractor mower comprising an interlocking cover 6 that covers an interlocking shaft 5 that interlocks between the two.