JPH027608B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises an upper bale chamber in a roll baler that picks up grass and rice straw that has been cut down in a field using a pick-up drum, sends it to a bale chamber, and winds and forms it into a roll. The ejection gate is shaped like this and mounted on a shaft that can be opened and closed freely on the fuselage.
This invention relates to a locking device for a discharge gate for holding it in an open position when it is rotated open to take out a bale formed into a roll in a bale chamber.

Roll baler A, as shown in Fig. 1,
A pick-up device 2 mounted on the front end of the machine body 1, which is movable by left and right crawler-type traveling devices 10, 10 (one is not clearly shown in the drawing), picks up cut grass and rice in the conservation area. The straw, etc. is picked up and sent into the bale chamber 3 installed on the top surface of the machine body 1 behind the pick-up device 2, and the winding device 3 installed inside the bale chamber 3.
0, the bale chamber 3 consists of a lower bale chamber 3a fixedly mounted on the machine body 1, and a support shaft 31 mounted on the machine body 1.
It is comprised of a discharge gate 3b serving as an upper bale chamber, which is pivoted so as to rotate upwardly around the center to open the bale chamber 3. And the discharge gate 3b
is supported by a gas spring 32 having a pressure that balances its weight, is pivoted in the lower bail chamber 3a so as to freely rotate about a fulcrum shaft 40, and is biased toward the engagement side by a spring 41. The hook 42 and the engagement pin 43 provided on the discharge gate 3b
When the grass, rice straw, etc. fed into the bale chamber 3 is formed into a roll bale of a predetermined thickness, the An alarm device activated by a detection device such as a pressure sensor informs the operator that the hook 42 is released from the spring 41 by operating a separately provided release device (not shown).
The operator grips the operating handle 33, which is fixed to the discharge gate 3b forming the upper bale chamber, in this state, and operates the handle to release the discharge. The gate 3b is rotated upward around the support shaft 31 to open it as shown by the chain line in FIG. 1, and the bale B (FIG. 3) formed in the bale chamber 3 is taken out. There is.

By the way, in the roll baler A configured as described above, when the operator rotates the discharge gate 3b to open and takes out the formed bale B, the discharge gate 3b rotates open.
b may rotate toward the closed side, which causes the inconvenience of having to support the discharge gate 3b so that it does not rotate downward when the bale B is taken out.

The present invention has been made to solve this problem, and the discharge gate 3 is rotated to open.
To provide a new means for locking the discharge gate 3b so that the discharge gate 3b does not move to the opened and rotated position, and for performing the locking operation and the release of the lock without interfering with the opening and closing operation of the discharge gate 3b. The purpose is to

For this purpose, in the present invention, the discharge gate of the bale chamber, which is rotatably supported up and down on the machine body by a support shaft, is provided with a lock mechanism that holds the discharge gate in the open position by rotating the discharge gate open. This invention proposes a locking device for a discharge gate in a roll baler, in which an operating lever for releasing the locking mechanism is supported by an operating handle for opening and closing provided on the discharge gate.

Next, an example of implementation will be described in detail with reference to the drawings. In addition,
The same reference numerals in the drawings shall be used for constituent members having the same effect.

In Fig. 2, 1 is a machine that can run freely by crawler-type traveling devices 10, 10 (one is not clearly shown in the drawing) installed on the left and right sides of the bottom, and 2 is a machine that is mounted on the front end of the machine 1. Pickup device, 3
4 is a bale chamber mounted on the upper surface of the machine body 1 and arranged behind the pick-up device 2 to receive the grass and rice straw raked from the surface of the field by the pick-up device 2; 4 is an internal engine/transmission mechanism; This figure shows a machine casing that is mounted on the rear of the aircraft body 1 and stores parts and the like.

The bale chamber 3 has a roll therein, which receives the grass that is scooped up by the pick-up device 2 and sent into the reception port 34 that opens at the front of the bale chamber 3, and rolls it into a bundle. A loading device 30 is installed (Fig. 3), and the upper half side is equipped with a
As shown in FIG. 3, the discharge gate 3b is formed to open and rotate upward around a support shaft 31 provided at a fixed position on the side. Further, 32 is a gas spring (FIGS. 4 and 5) that is installed between the discharge gate 3b and the machine wall of the lower bale chamber 3a, which is the lower half of the bale chamber 3;
42 is a hook provided on the machine wall of the lower bail chamber 3a so as to freely rotate about the fulcrum shaft 40; 43 is the hook 42; An engagement pin 41 is provided on the machine wall of the discharge gate 3b to engage with the hook 42, and a spring is provided to bias the hook 42 in the direction of rotation toward the engagement side. It is set in.

Therefore, when the operator grasps and operates the operating handle 33 provided on the discharge gate 3b for opening/closing operation, and the discharge gate 3b is opened as shown in FIG. 3
This is a locking mechanism that is installed to keep b in the open position shown in Fig. 3.As shown in Fig. 4, the lower end side is pivoted to a fulcrum w fixed to the machine wall of the lower bale chamber 3a. A lower link 50 with an angular cross section that is supported and rotates back and forth around the fulcrum W and rises and falls, and a lower end that is connected to the lower end that is the rotation end of the lower link 50 by a connecting shaft y, and an upper end that is discharged. The upper link 51 is pivotally supported on a fulcrum x fixed to the machine wall of the gate 3b and freely rotates back and forth around the fulcrum x, and the lower link 50 is rotated as shown in FIG. The upper link 51 rotates counterclockwise around the fulcrum w in FIG. 4, and the upper link 51 accordingly rotates clockwise in FIG.
When the imaginary line connecting the The discharge gate 3 is configured by a spring 52 that urges the discharge gate 3 to rotate clockwise.
b and rotate it open around the support shaft 31, thereby separating the lower link 50 and the upper link 51.
When the opening rotation is regulated by being stretched in a straight line, by releasing the hand, the state shown in FIG. 5 is achieved, and the discharge gate 3b is locked in the open position.

Reference numeral b denotes a release mechanism for releasing the lock mechanism a, which includes a triangular rotating plate 53 whose top end is pivotally supported on the aforementioned fulcrum x, and which freely rotates back and forth around the fulcrum x; An operating pin 54 is provided on the rear end side of the plate 53 so as to abut against the upper link 51 by rotating counterclockwise in FIG. A spring 55 that urges the moving plate 53 to rotate clockwise in FIG. 5 about the fulcrum x, and the rotating plate 5.
One end of the inner 56a is connected to the front end side of the rotating plate 53 so that the inner 56a is forcibly rotated about the fulcrum x in a counterclockwise direction against the bias of the spring 55. Operation lever 5 on the other end
7 is connected to the release wire 56.
One end of the outer 56b of the release wire 56 is fixedly supported on the outer surface of the machine wall on the side of the discharge gate 3b in the vicinity of the rotating plate 53 by a fixing metal fitting 58 (FIG. 4).
The other end of the outer 56b is connected to a bracket 59 fixed to the aforementioned operation handle 33 for opening and closing, which is mounted on the outer surface of the machine wall on the front end side of the discharge gate 3b.
(Fig. 6). The operating lever 57 is connected to the other end of the inner 56a.
is rotatably supported by a support shaft 57a on a bracket 59 fixedly provided to the operating handle 33, and the operating lever 57 is gripped together with the operating handle 33 and centered on the support shaft 57a. By rotating the operating handle 33 side, the inner 56
a and move the rotating plate 53 to the fulcrum x in FIG.
It is designed to rotate counterclockwise around the center.

In the illustrated embodiment, reference numeral 6 denotes an operating rod that rotates the aforementioned hook 42 to disengage from the engagement pin 43;
connected to the lower end of the hook 42 via the
By rotating, the release wire 61 is pulled and the hook 42 is rotated clockwise in FIG. 5 about the support shaft 40.

The thus constructed embodiment apparatus operates as follows.

When the hook 42 is rotated to disengage from the engagement pin 43 and the operation handle 33 is pushed upward, the discharge gate 3b is moved to the supporting shaft 31.
The veil chamber 3 is opened as shown in FIG. 5 by pivoting upward at the center.

At this time, due to the opening rotation of the discharge gate 3b,
By separating the fulcrums w and x, the lower link 50 and the upper link 51 go from being bent and connected as shown in Fig. 4 to being stretched as shown in Fig. 5, and the fulcrums w and Connection axis y and fulcrum x
are positioned in a straight line, thereby preventing upward rotation of the discharge gate 3b.

When this state is reached, the opening rotation of the discharge gate 3b is stopped and the operating handle 33 is released, and the lower link 50 and the upper link 51
is rotated in the direction of the arrow in FIG. 5 under the bias of the spring 52, and the connecting shaft y is positioned backwardly beyond the imaginary line connecting the fulcrums w and fulcrums x, and the front edge 51 of the upper link 51
The lower link 50 has an angular cross section in the middle of a.
The abutting portion 50a is formed by a bent wall on the front edge side of the
When the discharge gate 3b is in the state shown in FIG. 5 in which the discharge gate 3b is abutted against each other, the discharge gate 3b is locked and supported in the opened and rotated position.

Next, from the state shown in FIG. 5, if the operating lever 57 of the release mechanism b is grasped together with the operating handle 33 for opening/closing provided on the discharge gate 3b, the rotating plate 53 will be moved. An operating pin 54 provided on a rotating plate 53 that rotates counterclockwise in FIG. 5 about a fulcrum The connecting shaft y, which rotates counterclockwise about the fulcrum x and connects the rotating end of the upper link 51 and the rotating end of the lower link 50, is connected to the front of the imaginary line connecting the fulcrum w and the fulcrum x. , and this allows the discharge gate 3 to be moved to
The lock that had been holding the discharge gate 3b in the open state is released, and the discharge gate 3b is freely rotated to close.

Next, from this state, continue using the operating handle 3.
3 to rotate the discharge gate 3b downward, the upper link 51 and the lower link 50 are rotated so as to be bent at the position of the connecting axis y, and the discharge gate 3b is closed as shown in FIG. .

As explained above, in the means of the present invention, a lock mechanism is linked to the discharge gate, which operates to hold the discharge gate in an open state by rotating it open, and the lock mechanism is released and operated. The operating lever is provided on the operating handle for opening and closing the discharge gate, so when taking out the bale that has been formed in the bale chamber, all you have to do is hold the operating handle and rotate the discharge gate to open. Since the rotation of the discharge gate toward the closed side is automatically locked at the end of its stroke, the operation of taking out the bale by opening the discharge gate can be performed safely and easily. Then, when closing the discharge gate again after removing the bale, if the hand holding the operating handle also grips the operating lever and pulls down the operating handle, the lock will be released and the discharge gate will turn to the closed side. Since the opening and closing operation of the discharge gate is not affected by the operation of the discharge gate.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the conventional means, Fig. 2 is a perspective view of a roll baler in which the present invention can be implemented, Fig. 3 is a side view of the main parts of the same, Fig. 4 is a side view of the lock mechanism part of the above, FIG. 5 is an explanatory diagram of the operation of the locking mechanism portion same as the above, and FIG. 6 is a perspective view of the same portion. Explanation of drawing symbols, A...Roll baler, B...
Veil, a...Lock mechanism, b...Release mechanism, 1
... Airframe, 10 ... Travel device, 2 ... Pickup device, 3 ... Bale chamber, 3a ... Lower bale chamber, 3b ... Discharge gate, 31 ... Support shaft, 32 ...
...Gas spring, 33...Operation handle, 34
...Intake port, 4...Machine casing, 40...Fulcrum shaft, 41
... Spring, 42 ... Hook, 43 ... Engagement pin,
50...Lower link, 50a...Abutting portion, 51...
...Top link, 51a...Front edge, 52...Spring,
53... Rotating plate, 54... Operating pin, 55... Spring, 56... Release wire, 56a... Inner, 56b... Outer, 57... Operating lever, 57a... Support shaft, 58... Fixed Metal fittings, 59...
...bracket, 6...operation rod, 61...release wire, w, x...fulcrum, y...connection shaft.

Claims (1)

[Claims] 1. A lock mechanism is connected to the discharge gate of the bale chamber, which is rotatably supported up and down on a support shaft on the machine body, and which holds the discharge gate in the open position by rotating the discharge gate open, and the lock mechanism is released. A locking device for a discharge gate in a roll baler, in which an operation lever for opening and closing the discharge gate is supported by an operation handle for opening and closing provided on the discharge gate.