JP2001008601A - Boom detachment apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a boom detachment apparatus enabling to change in boom height and detachment of a boom to easily be carried out without using an industrial tool. SOLUTION: Knobs 49A, 49B are pulled inside while resisting the elastic force of springs 47A and 47B. Boom attachments 37A and 37B are mounted on a pipe 31A while maintaining the above state in such a way that the pipe 31A is fitted in concave parts 39A and 39B formed on the bottom of the attachments 37A and 37B. After that, upper part of the attachments 37A and 37B are shaken backward and forward in a state where the knobs are released. During that movement, each hole 35A is pierced by one end of each of locking pins 43A and 43B when the directions of through holes 41A and 41B match up to the direction of the hole 35A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boom attachment / detachment device, and more particularly to a boom attachment / detachment device capable of easily changing a boom height and attaching / detaching a boom without using a tool.

[0002]

2. Description of the Related Art In FIG. 7, a stay 3 is attached to a front portion of a traveling vehicle 10 via a four-contact link 1.
A boom 5 is attached to the stay 3. A side boom 7 is stored in a side portion of the traveling cart 10 in a state of being folded at a right angle to the boom 5, and is opened horizontally on an extension of the boom 5 in use. The boom 5 and the side boom 7 are provided with a plurality of injection holes 9. A medicine tank 11 is provided at the rear, and the medicine stored in the medicine tank 11 is discharged from the nozzle 9 at the time of use.

FIG. 8 shows a method of attaching the boom 5 to the stay 3. 8, stays 13A and 13B are fixed to the outer periphery of the boom 5. Stay 1
The ends of 3A and 13B are bent, and two through holes 15 are provided in the bent surface in the height direction. On the other hand, both ends of the stay 3 are also bent, and three bent holes 17 are provided in the bent surface in the height direction. Then, the bolt 19 is passed through the through hole 15 and the through hole 17, and then the bolt 19 is fastened by the nut 21, so that the boom 5 is moved to the stay 3.
Has been assembled.

[0004]

By the way, conventionally, when it is necessary to remove the boom 5 for maintenance or the like, it is necessary to remove the bolt 19 and the nut 21 using a tool each time, which is very complicated. In addition, since the removal is troublesome, it is often transported with the boom 5 assembled, which is costly.

Further, when changing the height of the boom 5 according to the height of the crop or the method of spraying, the bolt 19 and the nut 21 are once removed, the height of the through hole 17 is changed, and the height is changed again. A bolt 19 is inserted into the through hole 17 through the through hole 15.
It was necessary to repeat the work of stopping the passage.

SUMMARY OF THE INVENTION The present invention has been made in view of such conventional problems, and it is an object of the present invention to provide a boom attaching / detaching apparatus capable of easily changing the boom height and attaching / detaching the boom without using a tool.

[0007]

SUMMARY OF THE INVENTION Therefore, the present invention (Claim 1) provides a pair of stays provided at a front portion or a rear portion of a body (10) and having a hole (35) at a predetermined position. (33)
Holding means (31, 51, 51, 51, 51,
61) and a movement restricting means (39, 39) whose forward and backward movement is restricted by being placed on the holding means (31, 51, 61).
59, 69) provided with a pair of boom mounting means (3
7), a boom (5) fixed to the front side of the boom mounting means (37), a through hole (41) opened in the boom mounting means (37), and a through hole (41). The boom mounting means (37) is provided with a stop pin (43) which is mounted on the stay (33) by penetrating one end through the hole (35).

A stay (33) is provided in a pair at the front or rear of the body (10). This stay (33)
A hole (35) is provided at a predetermined position. The holding means (31, 51, 61) is arranged horizontally with respect to the body (10),
And the end is attached to the stay (33).

A pair of boom mounting means (37) is provided,
The boom mounting means (37) includes holding means (31, 5).
1, 61), the boom mounting means (3)
The movement restricting means (3) for restricting the forward and backward movement of (7).
9, 59, 69) are provided.

A boom (5) is fixed to the front side of the boom mounting means (37). One end of the retaining pin (43) passes through the hole (35) of the stay (33) via a through hole (41) formed in the boom mounting means (37).
At this time, the movement of the boom mounting means (37) is restricted in the front-rear direction and also in the vertical direction. As described above, attachment and detachment of the boom (5) can be easily performed without using a tool.

The present invention (Claim 2) further comprises a biasing means (47) for biasing one end of the stopper pin (43) in a direction penetrating the hole (35). .

One end of the retaining pin (43) is connected to a hole (35).
Is always urged in the direction of penetrating. Accordingly, if the boom mounting means (37) is swung back and forth while the boom mounting means (37) is placed on the holding means (31, 51, 61), one end of the locking pin (43) can be easily formed. Part (35).

At this time, the boom mounting means (37) is mounted on the stay (33). On the other hand, by pulling the locking pin (43) against the bias of the biasing means (47), one end of the locking pin (43) can be removed from the hole (35). At this time, the boom mounting means (37) can be easily removed from the holding means (31, 51, 61).

Further, the present invention (claim 3) is characterized in that a knob (49) is provided at the other end of the stop pin (43).

A knob (49) is provided at the other end of the locking pin (43). By pulling the knob (49), one end of the locking pin (43) can be easily removed from the hole (35). Therefore, the boom mounting means (37) can be easily attached to and detached from the stay (33).

Further, the present invention (Claim 4) is characterized in that the plurality of holding means (31, 51, 61) and the holes (35) are provided side by side in a height direction at predetermined intervals. I do.

A plurality of holding means (31, 51, 61) and holes (35) are provided in the height direction at predetermined intervals. Thus, the height of the boom (5) can be changed stepwise.

Further, the present invention (Claim 5) is characterized in that the space between the boom mounting means (37) and the stay (33) is closely or restricted to restrict the movement in the left-right direction.

Boom mounting means (37) and stay (33)
The movement in the left-right direction is restricted by the close movement or the movement restriction. This movement restriction is, for example, a member that fills a gap to separate the boom mounting means (37) from the stay (33) by a predetermined distance.

In addition to restricting the movement of the boom mounting means (37) in the front-rear direction by the movement restricting means (39, 59, 69) and restricting the movement in the front-rear direction and the vertical movement by the stopper pin (43), By restricting the movement in the left-right direction, the boom mounting means (37) is more securely attached to the stay (3).
It is attached to 3).

Further, according to the present invention (claim 6), the holding means (31, 51, 61) is a pipe (31) attached between the stays (33), and the movement restricting means (39). , 59, 69) are characterized in that a concave portion (39) to be fitted into a predetermined portion of the pipe (31) is formed.

The pipe (31) is used as the holding means (31, 51, 61), and the movement restricting means (39, 59, 69).
The boom mounting means (37) can be attached / detached with a simple structure.

Further, according to the present invention (claim 7), the holding means (31, 51, 61) is formed by a convex portion (51) or a concave portion (61) projecting horizontally from each of the stays (33). The movement restricting means (39, 59, 69) has a concave portion (5) fitted into the convex portion (51) or the concave portion (61).
9) or a projection (69) is formed.

As the holding means (31, 51, 61), a convex part (51) or a concave part (61) protruded horizontally from each stay (33), and a movement restricting means (39, 59, 6).
By forming the concave portion (59) or the convex portion (69) as 9), the boom mounting means (37) can be attached and detached with a simple structure.

Further, the present invention (claim 8) is characterized in that all or a part of the cross section of the convex portion (51, 69) or the concave portion (59, 61) is a circle or a part of a circle. .

The structure is simple by forming a circle or a part of a circle.

Further, the present invention (claim 9) is characterized in that all or a part of the cross section of the convex portion (51, 69) or the concave portion (59, 61) is square.

The rectangular structure simplifies the structure. It should be noted that the circle according to claim 8 and the square according to claim 9 can be appropriately combined and configured.

[0029]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show a first embodiment of the present invention. FIG. 1 is a perspective configuration diagram of the boom detaching device 30 according to the first embodiment of the present invention after the boom 5 is attached. FIG. 2 is a perspective view showing a configuration of the boom attaching / detaching device 30 before the boom 5 is attached.

In FIG. 1, stays 33A and 33
Between B, columnar pipes 31A and 31B are fixed at a predetermined height. This pipe 31A and the pipe 31
The holes 35A,
35B are provided.

A boom mounting portion 37 is provided on the pipe 31A.
A and 37B are placed. Boom mounting part 37A, 3
At the bottom of 7B, there are concave portions 39A, 3
9B is formed, and has the same shape as the upper portions of the pipes 31A and 31B.

The boom mounting portions 37A and 37B are
FIG. 3 shows a side view when fitted to 1A, 31B. In FIG. 3, the boom 5 is fixed to the left side of the boom mounting portion 37B.

The boom mounting portions 37A and 37B are provided with through holes 41A and 41B, respectively.
FIG. 4 is a cross-sectional view of the boom mounting portions 37A and 37B taken along the line II.
Shown in In FIG. 4, a retaining pin 43 is provided in the through hole 41B.
B is penetrated.

Then, one end of the retaining pin 43B also penetrates the hole 35A. Lock pin 43
A retaining ring 45B is fixed to a predetermined portion of the outer periphery of B.
A spring 47B as urging means is disposed on the left side of the retaining ring 45B and inside the boom mounting portion 37B. The other end of the retaining ring 45B is provided with a knob 49B.

Next, the operation of the first embodiment of the present invention will be described. First, the boom mounting portions 37A and 37B are connected to the stay 33.
A, A method of attaching to 33B will be described. Knob 4
9A and 49B are pulled inward while resisting the tension of the springs 47A and 47B. At this time, by the retaining rings 45A and 45B,
The springs 47A and 47B contract.

While maintaining this state, the concave portions 39A, 39A formed at the bottoms of the boom mounting portions 37A, 37B,
39B is placed so as to be fitted to the pipe 31A. At this time, the recesses 39A and 39B are firmly accommodated so as not to move around the pipe 31A by their own weight.

Thereafter, with the knobs 49A and 49B released, the upper portions of the boom mounting portions 37A and 37B are swung back and forth. At this time, the retaining rings 45A, 45B fixed to the retaining pins 43A, 43B work so as to be pressed outward by the extension action of the springs 47A, 47B.

For this reason, at the positions where the directions of the through-holes 41A, 41B and the hole 35A coincide, the stop pins 43A, 4A,
One end of 3B penetrates through hole 35A. In this state, the boom mounting portions 37A, 37B are
B and stop pins 43A, 43B, a stay 33A,
Securely attach to 33B.

Next, a method of removing the boom mounting portions 37A, 37B from the stays 33A, 33B will be described. At this time, the knobs 49A and 49B have the springs 47A and 47
B while pulling against the extension force of B
A, 37B The upper part is slightly inclined forward or backward. Due to this inclination, one end of each of the retaining pins 43A and 43B has a hole 35A,
Release from 35B.

When the knobs 49A and 49B are released, one ends of the locking pins 43A and 43B are brought into contact with the inner walls of the stays 33A and 33B by the extension action of the springs 47A and 47B. Therefore, by lifting the boom mounting portions 37A and 37B, the boom mounting portions 37A and 37B
It can be easily removed from 1A and 31B.

As described above, the attachment and detachment of the boom 5 can be easily performed without using a tool. Pipes 31A, 31B
Can share a pipe conventionally used as one of the members of the 4-contact link 1.

When it is desired to change the height of the boom 5, the following operation is performed. If the boom mounting portions 37A and 37B are removed from the pipe 31A and placed on the pipe 31B, one end of the stop pins 43A and 43B is connected to the spring 47A at a position where the directions of the through holes 41A and 41B and the hole 35B exactly match. 4
7B penetrates through the hole 35B.

At this time, the boom mounting portions 37A, 37B
Is securely attached to the stays 33A and 33B by the concave portions 39A and 39B and the retaining pins 43A and 43B. Thus, the height of the boom 5 can be easily changed according to the height of the crop.

Next, a second embodiment of the present invention will be described. FIG. 5 is a partial perspective configuration diagram of a boom attaching / detaching device 40 according to a second embodiment of the present invention. In FIG. 5, a columnar convex portion 51B is provided to protrude horizontally from the inner wall of the stay 33B. At the bottom of the boom mounting portion 37B, a concave portion 59B cut out in a square shape is formed, and is fitted to the convex portion 51B.

By providing the columnar convex portion 51 and forming the concave portion 59 in a square shape, the pipe 31 is provided and the concave portion 39 is cut out in a semicircular shape as in the first embodiment. It is easier to manufacture compared to.

Next, a third embodiment of the present invention will be described. FIG. 6 is a partial perspective configuration diagram of a boom attaching / detaching device 50 according to a third embodiment of the present invention. In FIG. 6, an angular recess 61B whose upper part is opened protrudes horizontally from the inner wall of the stay 33B. On the side of the boom mounting part 37B,
A corner projection 69B is formed, and is fitted to the corner recess 61B.

The provision of the angular recesses 61 and the angular protrusions 69 facilitates the manufacture as compared with the case where the pipe 31 is provided and the recess 39 is cut off in a semicircular shape as in the first embodiment. .

[0048]

As described above, according to the present invention, the movement restricting means (39, 59, 69) ensures that the boom mounting means (37) is placed on the holding means (31, 51, 61). Since the stopper pin (43) urged by the urging means (47) penetrates the hole (35) through the through hole (41), a tool is used for attaching and detaching the boom (5). It can be easily done without.

Further, since a plurality of holding means (31, 51, 61) and holes (35) are provided in parallel, the height of the boom (5) can be changed stepwise.

[Brief description of the drawings]

FIG. 1 is a perspective configuration diagram of a boom attaching / detaching device according to a first embodiment of the present invention after a boom is attached.

FIG. 2 is a perspective configuration diagram of the boom attaching / detaching device before the boom is attached.

FIG. 3 is a side view when the boom mounting portion is fitted to the pipe.

FIG. 4 is a sectional view taken along the line II in FIG. 3;

FIG. 5 is a partial perspective configuration diagram of a boom attaching / detaching device according to a second embodiment of the present invention.

FIG. 6 is a partial perspective configuration diagram of a boom attaching / detaching device according to a third embodiment of the present invention.

FIG. 7 is a conventional example of a traveling cart equipped with a boom.

FIG. 8 is a diagram showing a method of attaching the boom to the stay.

[Explanation of symbols]

 5 Boom 30, 40, 50 Boom attachment / detachment device 31A, 31B Pipe 33A, 33B Stay 35A, 35B Hole 37A, 37B Boom attachment 39A, 39B, 59A, 59B Recess 41A, 41B Through hole 43A, 43B Stop pin 45A, 45B Retaining ring 47A, 47B Spring 51A, 51B Convex part 61A, 61B Square concave part 69A, 69B Square convex part

Continued on the front page F term (reference) 2B121 AA11 AA20 CB03 CB24 CB33 CB47 CB51 CB56 EA24 EA25 FA02 4D074 AA05 BB06 CC04 CC22 CC24 4F033 AA06 BA03 CA01 DA01 EA01 LA12

Claims (9)

[Claims] 1. A pair of stays (33) provided at a front portion or a rear portion of a body (10) and having a hole (35) at a predetermined position, and a pair of stays (33) horizontally with respect to the body (10). And holding means (3) having an end attached to the stay (33).
1, 51, 61) and the holding means (31, 51, 61)
A pair of boom mounting means (37) provided with movement restricting means (39, 59, 69) for restricting forward and backward movement by being mounted on the boom, and fixed to the front side of the boom mounting means (37) Boom (5) and the boom mounting means (3
7) a through-hole (41) formed in the through-hole (41);
By passing one end through the hole (35) through
The boom attaching / detaching device, wherein the boom attaching means (37) includes a stopper pin (43) attached to the stay (33). 2. An urging means (47) for urging one end of said stopper pin (43) in a direction penetrating said hole (35).
The boom detaching device according to claim 1, further comprising: 3. The boom detaching device according to claim 1, wherein a knob (49) is provided at the other end of the stop pin (43). 4. A plurality of holding means (31, 51, 61) and a plurality of holes (35) are provided side by side in a height direction at predetermined intervals. Boom removal equipment. 5. The device according to claim 1, wherein a space between the boom mounting means (37) and the stay (33) is tightly or restricted so as to restrict movement in the left-right direction.
5. The boom detachable device according to 3 or 4. 6. The holding means (31, 51, 61)
A pipe (3) attached between the stays (33)
1) and the movement restricting means (39, 59, 69)
Is a concave portion (3) fitted into a predetermined portion of the pipe (31).
9. The method according to claim 1, wherein 9) is formed.
6. The boom detachable device according to 4 or 5. 7. The holding means (31, 51, 61)
A protrusion (5) protruding horizontally from each of the stays (33)
1) or the concave portion (61), and the movement restricting means (39, 59, 69) is provided with the concave portion (59) or the convex portion (6) fitted into the convex portion (51) or the concave portion (61).
9. The method according to claim 1, wherein 9) is formed.
6. The boom detachable device according to 4 or 5. 8. The method according to claim 6, wherein all or a part of the cross section of the protrusion (51, 69) or the recess (59, 61) is a circle or a part of a circle. Boom removal device. 9. The boom attachment / detachment device according to claim 6, wherein all or a part of a cross section of the convex portion (51, 69) or the concave portion (59, 61) is square.