JPH111A - Apron device for rotary working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apron device for a rotary working machine, which is adjustable for working pressure by a spring as is usual, and, in addition, automatically locked and held safely in a locked condition after it is lifted. SOLUTION: This apron device is equipped with a compression rod 24, whose edge 24a is rotationally supported in such a manner to move vertically relative to a body frame 14, and a rotational compression bracket 26 on the upper face of an apron 23, wherein the compression rod 24 is assembled into a rod supporting section 27 which is rotationally supported by the rotational compression bracket 26 to move vertically, and a spring 28 wound around the compression rod 24 adjusts working pressure on the apron 23. The apron device is also equipped with a lock pin 25 on the rod supporting section 27 for at least one of the compression rods 24, where the lock pin 25 is normally pressed against the compression rod 24 and, when the apron 23 is lifted, locks the compression rod 24. The apron device is also equipped with a second lock pin 29, which passes through a lock hole 23c and lock hole 24b provided in the apron 23 and compression rod 24, respectively, to lock the apron 23 while it is lifted and the compression rod 24 is locked by the lock pin 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention locks an apron pivotally supported at the rear end of a shield cover automatically in a state where the apron is flipped up, in addition to normal working pressure adjustment by a spring, and further securely locks the apron. The present invention relates to an apron device of a rotary working machine that is held.

[0002]

2. Description of the Related Art Conventionally, a shield is provided above a work rotor which is mounted on a rear part of a tractor via a three-point link hitch mechanism so as to be able to ascend and descend and extends horizontally, and an apron is provided on the rear end of the shield cover. A rotary working machine that pivotally supports the tip of the apron vertically and has a plurality of compression rods between the upper surface of the apron and the main body frame at predetermined intervals in the length direction of the apron is known. Have been.

[0003]

In the above-mentioned conventional compression rod, the working pressure of the apron is merely adjusted by the pressure of the spring wound around the rod. On the other hand, in the case of a rotary working machine, a straw culm or the like is wrapped around a work rotor, or when a cultivating claw or a substitute claw is damaged, an apron is flipped up to remove the wrapped straw culm or the like. Or replace damaged nails, but conventional compression rods do not have the ability to lock the apron in a flipped state, and require another means of holding the apron in a flipped state, There was a problem.

According to the present invention, the compression rod adjusts the working pressure of the apron by the pressure of a spring wound on the rod, and when the apron is flipped up, automatically locks in the state. An object of the present invention is to provide an apron device of a rotary working machine in which an apron is fixed (locked) to a rod of a compression rod by another pin in a state where the apron is locked by a compression rod in a state where the apron is raised.

[0005]

In order to achieve the above object, the present invention provides: A shield cover covers the upper part of the work rotor that extends vertically and is mounted on the rear of the tractor via a three-point link hitch mechanism. In a rotary working machine provided with a plurality of compression rods that are freely pivoted and provided at predetermined intervals in the length direction of the apron between the upper surface of the apron and the main body frame, each of the compression rods is The distal end of the rod is pivotally supported up and down with respect to the main body frame, a rotation compression bracket is provided on the upper surface of the apron, and the rod is fitted to the rod support that is pivotally supported up and down on this rotation compression bracket. And the working pressure of the apron is adjusted by the pressure of the spring wound around the rod. .

B. Waiting at least one of the plurality of compression rods in a biased state with respect to the rod;
A lock pin for locking the rod when the apron is flipped up is provided on the rod support.

C. In a state where the rod is locked by the lock pin by flipping up the apron, a second lock pin that locks the apron by inserting the lock hole provided in the apron and the lock hole provided in the rod is provided. .

[0008]

With the above arrangement, the apron device of the rotary working machine according to the present invention adjusts the working pressure of the apron by the pressure of the spring wound on the rod in the compression rod. Further, when the apron is flipped up, the rod is locked in that state by the lock pin. Further, the apron is locked (locked) by another pin to the rod of the compression rod in a state where the apron is locked by the compression rod in the flipped-up state, and the apron is reliably held in the flipped-up state.

[0009]

Embodiments of the present invention will be specifically described below with reference to the accompanying drawings. In the figure, reference numeral 1 denotes a tillage rotary having a long tillage function with a long length in the left-right direction. The top of the tilling rotary 1 is provided with a top mast 2 and a lower link connecting portion 3 that are connected to a well-known three-point link hitch mechanism including a top link and a lower link of a tractor (not shown). It is attached to the rear of the tractor so as to be able to move up and down. Further, power is transmitted from the PTO shaft of the tractor to an input shaft 4a protruding forward from a transmission gear box 4 provided at the front left and right central portions of the tilling rotary 1 via a universal joint, a transmission shaft and the like.

On both left and right sides of the gear box 4, a transmission frame 6 having a transmission shaft 5 therein and serving as a main body frame, and a hollow support frame 7 extend in the horizontal direction. A chain transmission case 8 is suspended from a side end of the transmission frame 6, and a side frame 9 is suspended from a side end of the support frame 7 so as to face the chain transmission case 8. A rotary shaft 10 is suspended between the lower end of the chain transmission case 8 and the lower end of the side frame 9. A number of tilling claws 11 are attached to the circumference of the rotary shaft 10 to form a tilling rotor 12. And
The power transmitted to the input shaft 4a is gear-shifted in the gear box 4, rotates the transmission shaft 5 to rotate the rotary shaft 10 via the chain transmission case 8, and rotates the tilling rotor 12 in a predetermined direction. And tilling work.

On the front side of the tilling rotor 12, a pair of left and right gauge wheels 13 for adjusting the tilling depth of the tilling rotor 12 is provided. This gauge wheel 13
A wheel arm 13a supporting a gauge wheel 13 at a lower end thereof is inserted into a vertical wheel arm insertion portion 15a of a wheel bracket 15 fixed so as to protrude forward from the main body frame 14, and the axis of the wheel arm 13a is inserted. Insert it so as to be the same as the axis of the portion 15a,
Pin hole 15b formed in wheel arm insertion portion 15a
(2) and one of the many pin holes 13b formed in the wheel arm 13a are aligned, and the locking pin 16 is inserted therethrough to adjust the gauge wheel 13 up and down to fix it.

An upper / lower operation grip 17 is provided at an upper end of the wheel arm 13a. A spring seat 18 is provided at a lower end of an attachment 17a of the up / down operation grip 17 and an upper end of the wheel arm insertion portion 15a, respectively. A coil spring 19 as a balancer is interposed between the spring seats 18 to urge the wheel arm 13a upward.

The upper side of the tilling rotor 12 is covered with a shield cover 20, and side covers 21 are provided at both left and right ends of the shield cover 20. At the rear end of the shield cover 20, a front end of an apron 23 is pivotally supported via a pivot 22 so as to be vertically rotatable. Side covers 23a are also provided on both left and right sides of the apron 23. A compression rod 24 is provided between the upper surface of the apron 23 and the main body frame, and a lock pin 25 is provided on the compression rod 24 so that the apron 23 can be locked with the flipped up state.

A plurality of (four) compression rods 24 are provided at predetermined intervals in the length direction of the apron 23, and the distal ends 24a of the rods are pivotally supported so as to be vertically rotatable with respect to the main body frame. A rotation compression bracket 26 is provided on the upper surface of the apron 23, and a rod 24 is fitted on a rod support portion 27 pivotally supported on the rotation compression bracket 26 so as to be able to rotate vertically.
The working pressure of the apron 23 is adjusted by the pressure of the spring 28 wound around the apron.

At least one of the plurality of compression rods 24 waits in a state of being biased by a spring with respect to the rod 24, and locks the rod 24 when the apron 23 is flipped up as shown by the phantom line in FIG. A lock pin 25 is provided on the rod support 27. In a state where the apron 23 is flipped up and the rod 24 is locked by the lock pin 25, a lock hole 23 c provided in a pair of locking plates 23 b erected on the apron 23 and a rod 24 are formed.
A second lock pin 29 is provided to lock (fix) the apron 23 by passing through the lock hole 24b provided at the rear end of the apron 23. The lock pin 25 can be displaced between a position where the rod 24 is urged by a spring and a position where the rod 24 is not urged.

[0016]

According to the apron device of the rotary working machine of the present invention as described above, the following effects can be obtained.

[0017] The compression rod pivotally supports the distal end portion of the rod with respect to the main body frame so as to be vertically rotatable, and has a rotation compression bracket provided on the upper surface of the apron. Since the rod is fitted to the part and the working pressure of the apron is adjusted by the pressure of the spring wound on the rod, in the compression box, the working pressure of the apron can be adjusted by the pressure of the spring wound on the rod. it can.

[0018] At least one of the plurality of compression rods stands by in a biased state with respect to the rod, and a lock pin that locks the rod when the apron is flipped up is provided on the rod support portion. The rod is automatically locked by the lock pin so that the rotary working part can be repaired.

[0019] In a state where the apron is flipped up and the rod is locked by the lock pin, the second lock pin for locking the apron by inserting it into the lock hole provided in the apron and the lock hole provided in the rod is provided.
In a state where the apron is locked by the compression rod in the flip-up state, the apron can be reliably held in the flip-up state by being fixed (locked) to the rod of the compression rod by the second lock pin.

[Brief description of the drawings]

FIG. 1 is a side view of an entire tilling rotary equipped with the present invention.

FIG. 2 is a cross-sectional view of the main part.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Tilling rotary 2 Top mast 3 Lower link connection part 4 Transmission gear box 4a Input shaft 5 Transmission shaft 6 Transmission frame 7 Support frame 8 Chain transmission case 9 Side frame 10 Rotary shaft 11 Tilling claw 11 12 Tilling rotor 13 Gauge wheel 13a Wheel arm 13
b Pin Hole 14 Body Frame 15 Wheel Bracket 15a Wheel Arm Insertion Section 15b Pin Hole 16 Locking Pin 17 Vertical Operation Grip 17a Attachment 18 Spring Seat 19 Coil Spring 20 Shield Cover 21 Side Cover 22 Pivot 23 Apron 23a Side Cover 23b Lock plate 23c Lock hole 24 Compression 24a Rod tip 2
4b Lock Hole 25 Lock Pin 26 Rotation Compression Bracket 27 Rod Support 28 Spring 29 Second Lock Pin

Claims (3)

[Claims] 1. A shield cover covers an upper part of a work rotor extending vertically, which is mounted on a rear portion of a tractor via a three-point link hitch mechanism, and has a front end of an apron at a rear end of the shield cover. A rotary working machine having a plurality of compression rods provided at predetermined intervals in the length direction of the apron between the upper surface of the apron and the main body frame, and The compression rod pivotally supports the distal end portion of the rod with respect to the main body frame so as to be vertically rotatable, and has a rotation compression bracket provided on the upper surface of the apron. That the rod is fitted to the part and the apron working pressure is adjusted by the pressure of the spring wound around the rod Apron device of the rotary working machine, wherein. 2. A lock pin, which is provided on at least one of the plurality of compression rods in a state of being urged against the rod and locks the rod when the apron is flipped up, is provided on the rod support portion. Claim 1
An apron device for a rotary working machine as described in the above. 3. A second lock pin which locks the apron by inserting the lock hole provided in the apron and the lock hole provided in the rod in a state where the apron is flipped up and the rod is locked by the lock pin. The apron device for a rotary working machine according to claim 1 or 2, wherein: