JPH0520455Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention has a main body that can be attached to a traveling device such as a tractor and is equipped with a chemical tank, and a boom attached to the main body that is equipped with a nozzle that can communicate with the chemical tank. The present invention relates to a boom holding device for a boom sprayer that is arranged so as to be able to rise and fall in the lateral direction and that can lock the boom to the main body when the boom is in the down position.

[Prior Art] As shown in FIG. 5, a conventional boom holding device for a boom sprayer of this type has a main body frame 1 that can be attached to a traveling device such as a tractor, and a plurality of nozzles capable of spraying a chemical solution. A boom 2 is pivotally supported to be able to raise and lower toward the side of the main body frame 1 via a support shaft (not shown), and a U-shaped bracket 3 is attached to both ends of the boom 2. It is fixed by a bolt 5 inserted through a round bolt hole 4 to be drilled. Further, a boom receiving member 6, which is a locking member in which a recess 6a into which the bracket 3 is inserted and locked when the boom 2 is in the down position, is attached to the main body frame 1 via a support shaft 7. A locking pin 8 is provided in the recess 6a of the boom receiving member 6 so that it can be inserted and removed in a transverse direction, and the bracket 3 is locked in the recess 6a by the locking pin 8.

Since the boom holding device of the conventional boom sprayer is as described above, when the main body frame 1 is mounted on a traveling device such as a tractor and the boom 2 is stored in a direction along the side of the main body frame 1. Then, the bracket 3 attached to the boom 2 is inserted into the recess 6a of the boom receiving member 6 attached to the main body frame 1, and the locking pin 8 is passed through the bracket 3, so that the boom receiving member 6 is inserted.
is locked.

[Problem to be solved by the invention] However, when the boom 2 is locked near the side of the main body frame 1 as described above, depending on the type of tractor that is the traveling device, the safety frame , or the cabin door may not open. Conventionally, the above problem was dealt with by replacing the boom holding device for locking the boom 2 with an appropriate one depending on the type of traveling device, but the task of replacing the boom holding device was extremely troublesome. There is a problem that.

[Means for Solving the Problems] This invention was devised in view of the above-mentioned circumstances, and includes a chemical tank and a plurality of nozzles communicating with the chemical tank arranged in a row on the main body. A boom sprayer is provided with a boom that can be raised and lowered, and a U-shaped bracket is attached to the side edge of the boom, and a locking member is movably attached to a shaft that stands upright on the side of the main body. A boom receiving member having a concave portion at one end is movably attached to a base member attached to one end of the locking member 31, and when the boom is in the down position, the bracket is inserted into the concave portion of the boom receiving member. The present invention proposes a boom holding device for a boom sprayer in which one end is inserted and the pin passes through the recess and locks the boom.

[Example] Hereinafter, an example of this invention will be described based on the accompanying drawings.

Figures 1 and 2 are rear and side views showing an example of a boom sprayer to which the boom holding device of this invention can be attached. Part 1
The body frame 11 can also be attached to a traveling device such as a tractor (not shown) by a three-point link or the like via the three-point link 3. Attachment members 16 are mounted on both rear sides of the body frame 11 on which the chemical tank 14 is mounted. The boom 15 is pivotally supported on the support shaft 17 so as to be able to rise and fall between the left and right extension directions and diagonally forward. Note that a chemical tank 14 is connected to the boom 15, which is operated by a cylinder 18, through a pipe 19.
A plurality of nozzles 20 that communicate with each other are arranged at appropriate intervals.

The boom holding device of this invention when applied to the boom sprayer will be described below.

FIG. 3 is a schematic plan view showing the main parts of the boom sprayer constructed by implementing the first embodiment of the boom holding device of this invention, and in the figure, 30 is the main body frame 11 shown in FIGS. 1 and 2. A shaft body is fixed to the tip of a substantially L-shaped arm 30a that protrudes from both front sides.A locking member 31 having a recess 31a is rotatably inserted through the shaft body 30. The stop member 31 is prevented from rotating at an arbitrary position by a set screw 31b. Recessed portion 31a of locking member 31
A locking pin 32 is inserted through and removably in a direction transverse to this.

On the other hand, a plurality of circular holes 33 are bored in the boom 15, and bolts 35 are inserted into the boom 1 through the circular holes 33.
The boom 15 is fixed to the bracket 34 by a screw connection to a plate 36 disposed within the boom 15.

This bracket 34 can be inserted into the recess 52a of the boom receiving member 52, and when inserted into the recess 52a, the locking pin 32' locks into the bracket 34.
The inside is penetrated. The boom receiving member 52 has a square bar shape and is slidably fitted to the tip of the base member 51 which is also square cylindrical. A bolt hole 53 is bored in the boom receiving member 52, and the bolt hole 53 is formed in the boom receiving member 52. A lock nut 54 is fixed so as to surround the outer edge of 53,
A fixing bolt 55 is threadedly connected to the lock nut 54, and the tip of the bolt 55 is attached to the base member 51.
The boom receiving member 52 can be slid to be fixed at any position, and as a result, the boom 15 can also be moved in the left-right direction and fixed at a predetermined position.

FIG. 4 is a plan view of the essential parts of the boom sprayer according to the second embodiment of this invention, and in the figure, 6
Reference numeral 1 denotes a base member whose base end is locked to a shaft 30 directly fixed to the main body frame 11 in the same way as that shown in FIG. A plurality of bolt holes 62 are drilled at appropriate intervals, and these bolt holes 6
A boom receiving member 64 having a recess 64a into which the bracket can be inserted is mounted on the base member 61 so as to be movable in the left and right direction by a bolt 63 selectively inserted through the base member 61. In this case, the locking member includes a base member 61 and a boom receiving member 64.

[Effect of the invention] Since the boom holding device according to this invention is as described above, for example, when a certain type of tractor is used as the traveling device, in the case of the one shown in the third figure, the fixing bolt 55 can be fixed. By loosening and sliding the boom receiver member 52 along the base member 51, and in the case of the one shown in FIG.
By inserting into different bolt holes 62,
bracket 34 or boom receiving member 52, respectively;
64 in the left-right direction, the boom 15 can be locked to the locking member 31 and the boom receiving members 52, 64 at an appropriate position with respect to the left-right direction of the tractor in a down state. In any type of tractor or the like, the boom sprayer can be stored with the boom 15 in the down position without interfering with the opening and closing of the cabin door.

[Brief explanation of drawings]

1 and 2 are rear and side views showing an example of a boom sprayer to which the boom holding device of this invention can be installed, and FIGS. 3 and 4 show first and second embodiments of the same boom holding device, respectively. FIG. 5 is a schematic diagram showing the main parts of the boom sprayer according to an example, and FIG. 5 is a schematic diagram showing a conventional boom holding device. In the figure, 11...main frame (main body), 14...chemical tank, 15...boom, 1
7... Support shaft, 20... Nozzle, 30... Shaft body, 3
1... Locking member, 34, 52, 64... Boom receiving member, 32, 32'... Locking pin, 33... Round hole,
34... Bracket, 35, 63... Bolt, 3
6... Plate, 51, 61... Base member, 52
a, 64a... recess, 53... bolt hole, 55...
...fixing bolt, 63...bolt.

Claims (1)

[Claims for Utility Model Registration] (1) A boom sprayer comprising a chemical tank and a plurality of nozzles communicating with the chemical tank in a main body, and a boom that is movably arranged on the side of the main body. , while a U-shaped bracket 34 is attached to the side edge of the boom 15, a locking member 3 is attached to a shaft 30 that stands up on the side of the main body 11.
1 is movably attached, and a recess 5 is attached to one end of the base member 51, 61 attached to one end of this locking member 31.
Boom receiving members 52, 6 forming 2a, 64a
4 is movably attached, and when the boom 15 is in the down position, one end of the bracket 34 is inserted into the recesses 52a, 64a of the boom receiving members 52, 64, and the recesses 52a,
A boom holding device for a boom sprayer that penetrates through and locks the boom sprayer. (2) A base end of a square tubular boom receiving member 52 forming a recess 52a is slidably fitted to one end of a square bar-shaped base member 51 that is pin-coupled to one side of the locking member 31. 2. The boom holding device for a boom sprayer according to claim 1, wherein a fixing bolt 55 is tightened into a bolt hole 53 formed in a side edge of the boom receiving member 52. (3) A plurality of sets of bolt holes 62, 62 are bored at appropriate intervals on the upper edge of the base member 61, which is fixed to one side of the locking member 31 and has an L-shaped cross section. The base end of the boom receiving member 64 that forms a recess in either of
2. The boom sprayer holding device according to claim 1, wherein the boom sprayer holding device is configured to be tightened by.