JP3288031B2 - Fertilizer application equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fertilizer spraying device, and more particularly to a device mounted on a power vehicle such as a passenger management machine or a tractor for spraying fertilizer on fields.

2. Description of the Related Art Conventionally, as a device of this type, a fertilizer sprayer is connected to a rear part of a mobile farming machine such as a tractor, and the power is taken from a PTO shaft of the mobile farming machine and housed in a fertilizer tank. In some cases, fertilizer was fed and applied to the field.

SUMMARY OF THE INVENTION Such a conventional device is:
Since the fertilizer spraying device is supported via the three-point link mechanism provided at the rear of the mobile agricultural machine, the amount of overhang from the rear end of the mobile agricultural machine becomes large, and the front-rear balance of the aircraft becomes large. Depending on the wind direction, especially in the case of powdered fertilizer, depending on the wind direction, there were many problems that were poor and lacked running stability, and there were many structures that could not freely adjust the angle of the discharge port of the fertilizer spraying device during work. However, there was a drawback that the fertilizer being sprayed was applied to the worker properly.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has been devised so that the front-rear balance of the body is good and that the fertilizer being sprayed is not applied to the workers. No equipment is provided. For this reason, the present invention has taken the following technical measures. That is,
According to the first aspect of the present invention, the fertilizer tank 20 is mounted and provided at the rear part of the body of the power vehicle 1, and a blower fan 37 and a left and right lateral branch pipe 50 are provided near the fertilizer tank 20. At each end, a pair of fertilizer discharge tubes 56, 56 are attached to the base ends via bellows 54, 54, respectively.
The discharge outlets 57, 57 at the ends of the discharge tubes 56, 56 are respectively connected to the bellows 5
The upper and lower parts are supported so as to be able to freely adjust the angle of movement from up to down through the operation lever 86 in the up-down and front-rear directions.
6, the push-pull operation in the front-rear direction and the swinging operation in the left-right direction adjust the discharge port 57 in the front-rear direction and the up-down direction only on one side or both sides. . According to a second aspect of the present invention, the operation lever 86 and the discharge pipe 56 are connected to each other by wires 80 and 82. According to the third aspect of the present invention, the shutter 61 is rotatably provided at the center of the branch pipe 50, and the shutter 61 is adjusted by the adjustment lever 64, so that the fertilizer discharge direction can be changed to the fertilizer discharge pipe 56 on one side or both sides. The discharge direction is switched, and the structure of the fertilizer application device according to claim 1 or 2 is provided.

Embodiments of the present invention will be described below with reference to the drawings. First, a description will be given of the configuration. Reference numeral 1 denotes a tractor for riding management, which includes front wheels 2, 2 and rear wheels 3,
3, the rotational power of the engine 4 is appropriately reduced by a transmission in the transmission case 5, and the reduced rotational power is transmitted to the front wheels 2, 2, and the rear wheels 3, 3. I have. A hydraulic elevating mechanism 6 for lifting the working machine is provided at the rear of the body of the tractor 1, and a pair of left and right lower links 9, 9 are configured to move upward when hydraulic pressure oil is supplied into the hydraulic cylinder 8. Is done. A hitch 10 is provided at the rear ends of the lower links 9 and 9 for connecting the working machine with one touch, and a horizontal upper pin (not shown) provided on the working machine side hitch (not shown) is hitch. 10 recesses 10
a. 12 is this hitch 10
Are engaged with the pins of the work machine side hitch to fix the work machine, but the detailed description is omitted here. Reference numeral 15 denotes a step provided on the getting-on / off portion of the tractor 1, which extends to the rear and is integrally formed with the fender 16. 17 is a steering handle, and 18 is a seat. Reference numeral 20 denotes a fertilizer tank for filling with fertilizer, which has a funnel shape with a downward taper when viewed from the side, has a concave shape with an open front side when viewed from a plane, and surrounds the seat 18 from behind. The fertilizer tank 20 is supported by four columns 23, and the lower end of the column 23 is mounted on the body behind the seat 18. A delivery valve 25 driven by a motor (not shown) is provided below the fertilizer tank 20, and a flexible delivery pipe 27 is provided below the delivery valve 25.
Are connected. The rotation speed of the delivery valve 25 can be arbitrarily adjusted, and can be changed to a desired speed by a control switch 26 located on the left side of the seat 18. Next, hitch 1
The specific structure of the blower fan 37, the fertilizer discharge pipe 56, and the like, which are detachably attached to the fan 0 will be described. Hitch 10
U-shaped frame 3 on the blower unit side that is detachably attached to
The upper and lower two pins 32, 32 which engage with the hitch 10
Is fixed, and an input shaft 35 is suspended in the front-rear direction between two opposing plates of the U-shaped frame 31 via two bearings 33, 33. A fan case 39 for accommodating the blower fan 37 is integrally attached to the U-shaped frame 31, and the blower fan 3 is attached to one end of a shaft 40 supported by the fan case 39.
7, and a small-diameter two-stage pulley 42 is attached to the other end. A belt 45 is wound between a large-diameter two-stage pulley 44 fixed to the rear end of the input shaft 35 and a small-diameter two-stage pulley 42. Reference numeral 43 denotes a transmission case that covers these transmission members. The fan case 39 has a circular opening at the center on the front side, and an air inlet 46 is provided.
The sucked wind is guided from a substantially spiral-shaped conduit 48 to a branch pipe 50 described later. Then, the feeding pipe 27 joins in the middle of the conduit 48, and the fertilizer dropped from the fertilizer tank 20 is guided to the branch pipe 50 through the conduit 48.
The branch pipe 50 is located in the rear part of the fuselage and is held in a horizontal posture in the left-right lateral direction, and an appropriate number of ejection holes 52 are formed on the side facing the ground in the left-right lateral direction. The length of the branch pipe 50 is slightly shorter than the width of the fuselage.
Fertilizer discharge pipes 56 are connected to each other via 54.
The fertilizer discharge pipes 56, 56 are also provided with several ejection holes 59 on the lower surface, so that the fertilizer is discharged not only from the ejection holes 57 at both ends but also from the ejection holes 59. Note that the conduit 48 and the branch pipe 50 may be formed of different members, but in the present embodiment, they are integrally formed of the same member. A shutter 61 is rotatably provided at the center of the branch pipe 50. The shutter 61 can change the direction of fertilizer discharge by a shutter adjusting lever 64 provided on the right side of the concave portion of the fertilizer tank 20. It is configured as follows. 65 is a rotating shaft attached to the shutter 61, 66 is an arm,
68 is a wire. These blower units and the fertilizer discharge pipes 56 are sub-assembled in advance, and the integrated unit is attached to the hitch 10 at the rear of the lower link 9. Then, if the shutter-adjusting lever 64 is operated in the up and down direction to maintain the shutter 61 at the neutral position as shown by the solid line in FIG. 8, the fertilizer that has passed through the conduit 48 will pass through the left and right fertilizer discharge pipes 56, 56. It is configured such that if one side is closed and the other side is opened, only one side of the fertilizer discharge pipe 56 can release the fertilizer. Therefore, by operating the shutter 61, it is possible to easily spray only one side or the whole surface behind the operator. Further, the fertilizer discharge pipes 56, 56 are configured so as to be able to swing up and down and up and down within a certain range, and the structure of the adjustment mechanism will be described next. Since the left and right adjustment mechanisms are exactly the same, only one side will be described. Pipes 70 having a rectangular cross section are horizontally fixed to both left and right sides of the U-shaped frame 31, and a support member 74 having an inverted L-shaped arm 72 in side view is fixed to both ends thereof. A U-shaped receiving frame 76 is fixed to the upper surface and the front surface of the fertilizer discharge tube 56,
One ends of the wires -80 and 82 are attached to these. The wire -80 is for adjusting the up and down movement of the fertilizer discharge tube 56, and the wire -82 is for adjusting the forward and backward movement. These wires
Springs 83 and 84 are interposed at the end portions of the fertilizer discharge pipes 56 and 56 so as to constantly urge the fertilizer discharge pipes 56 and 56 downward and rearward. The up-down and front-back adjustment of the fertilizer discharge tubes 56, 56 is specially performed by a single operation lever 86 provided as a pair of left and right as shown in FIG. 3, and the fertilizer discharge tubes 56, 56 are moved upward. To move or move the lever forward, the operation lever 86 is rotated while opposing the springs 83 and 84. As shown in FIGS. 11 and 12, the operation lever 86 can rotate over a predetermined range around the axis of the fulcrum bolts 89 and 90. More specifically, an inverted U-shaped support arm 92 is fixed to a lower portion of the lever arm 86a of the operation lever 86, and the support arm 9 is provided.
The lower part of 2 is fastened with bolts 90 and nuts 98 so as to sandwich the boss 94. The boss 94 is externally fitted to a fulcrum bolt 89, and an intermediate portion of a rising portion 94a erected at an inner end thereof is provided with a pin 100 for vertical movement wires.
80 is attached. Further, one end of the outer wire 102 of the front-rear movement wire 82 is locked to the rising portion 94a, and the wire 82 passing therethrough is locked.
The end of the pin 1 is connected to the lever arm 86a of the operation lever 86.
Locked at 04. It should be noted that reference numerals 105, 10
6 is a friction plate, 107 is a tightening nut, and 108 is an operation lever.
86 is an operation box, and 110 is an outer-wire-102.
An arc-shaped guide hole 112 that can be inserted is an opening formed in the operation box 108. Next, the operation of the above embodiment will be described. When the rotating power of the engine 4 is transmitted to each rotating part and the machine body is advanced, the powdery or granular fertilizer filled in the fertilizer tank 20 flows down by the rotation of the feeding valve 25, and is blown through the feeding pipe 27. Unit side conduit 4
8 flows into. At this time, the PT of the tractor-1
The input shaft 35 on the blower unit side that has obtained rotational power from the O-axis
The rotation is transmitted to the blower fan 37 through the large-diameter pulley 44 and the small-diameter pulley 42, and the wind generated by the blower fan 37 is guided into the conduit 48. The fertilizer riding on the wind is passed through the branch pipe 50 and the fertilizer discharge pipe 56, and is sprayed into the field from the tip discharge port 57 of the fertilizer discharge pipe 56. Depending on the shape and location of the field, the spraying may be switched from uniform spraying over the entire surface to spraying on one side only. In such a case, the discharge direction may be selected by appropriately switching the shutter adjustment lever 64.
If the fertilizer does not fly in the desired direction due to strong winds during the work, the discharge direction and angle of the fertilizer discharge pipes 56, 56 are appropriately adjusted. In such a case, a single operation lever is required. The direction of the fertilizer discharge pipes 56, 56 is changed by rotating the 86 vertically or horizontally. For example, when the fertilizer discharge tube 56 is to be directed upward, the operation lever is required.
In FIG. 11, the pivot 86 is turned in the direction of arrow A about the axis of the fulcrum bolt 89, and when turned downward, it is turned in the direction of arrow B. And the fertilizer discharge pipes 56, 56
When the lever is moved in the front-rear direction, for example, when it is moved forward, the operation lever 86 is rotated in the direction of arrow C about the axis of the fulcrum bolt 90 in FIG. Rotate in two directions. In addition,
It goes without saying that the above-described rotation adjustment can be performed simultaneously in the vertical direction and in the front-rear direction. In this embodiment, a heavy fertilizer tank 20 is placed behind a seat of a tractor-1 which is a passenger management machine, and a blower unit and a fertilizer discharge pipe 56 are provided.
And the like are detachably attached to the hitch 10 of the lower link 9, so that there is a feature that the attachment / detachment becomes easier as compared with a conventional device in which all are integrated. . Further, the left and right sides of the fertilizer tank 20 are extended to the side of the seat 18, and an operation lever is provided at the extended portion.
The provision of the switches 64, 86 and the switch 26 facilitates the operation during the spraying operation.

As described above, according to the first aspect of the present invention, the fertilizer tank 20 is mounted and provided on the rear part of the body of the power vehicle 1 and the blower fan 3 is provided near the fertilizer tank 20.
7 and a left and right lateral branch pipe 50 are provided, and a pair of fertilizer discharge pipes 56 are provided at both ends of the branch pipe 50 via bellows 54, 54.
Attach the respective proximal ends of the discharge tubes 56,
The discharge ports 57 at the distal end 56 are supported so as to be capable of adjusting the angle of movement of the bellows 54 from the bellows 54 in the up-down and front-rear directions via an operation lever 86 as needed. Since the fertilizer dispersing device is characterized in that the front-rear direction and the vertical direction of the discharge port 57 are adjusted only on one side or both sides by a swinging operation in the left-right direction, the load of the heavy fertilizer tank 20 is reduced. Since the center of gravity is shifted toward the front due to the vicinity of the rear wheel 3, the longitudinal balance of the body is improved, and the running stability is improved. The fertilizer discharge pipe 5 provided behind the fertilizer tank 20
The discharge angles of the discharge ports 57, 57 can be freely set up and down and back and forth independently of each other, so that the fertilizer can be satisfactorily sprayed without being influenced by the wind direction, and the fertilizer is applied to the worker. Is reduced. According to the second aspect of the present invention, the wire 8 is connected between the operation lever 86 and the discharge tube 56.
The fertilizer spraying device according to claim 1, wherein the fertilizer spraying device is connected by 0, 82, so that the angle of the fertilizer discharge pipe 56 in the vertical direction and the front-back direction can be adjusted only by operating and adjusting the operation lever 86. Adjustment during running is also easy. According to the third aspect of the present invention, the shutter 61 is rotatably provided at the center of the branch pipe 50, and the shutter 61 is adjusted by the adjustment lever 64, so that the fertilizer discharge direction can be changed to the fertilizer discharge pipe 56 on one side or both sides. Since the release direction is switched, the fertilizer spraying device according to claim 1 or 2, wherein the fertilizer which has passed through the conduit can be supplied to the left and right fertilizer discharge pipes 56, 56 by keeping the shutter 61 at the neutral position. It is configured such that if one side is closed and the other side is opened, only one side of the fertilizer discharge pipe 56 can release the fertilizer. Therefore, by operating the shutter 61, it is possible to easily spray only one side or the whole surface behind the operator.

[Brief description of the drawings]

FIG. 1 is an overall side view of a management tractor.

FIG. 2 is a side view showing a state in which a fertilizer application device is mounted on a management tractor.

FIG. 3 is a plan view of the tractor of FIG.

FIG. 4 is a rear view of the tractor shown in FIG. 2;

FIG. 5 is a side sectional view of a main part.

FIG. 6 is a rear view of FIG. 5;

FIG. 7 is a side sectional view of a main part.

FIG. 8 is a plan sectional view of a main part.

FIG. 9 is a plan view of a main part.

FIG. 10 is a side view of a main part.

FIG. 11 is a side sectional view of a main part.

FIG. 12 is a plan sectional view of a main part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Powered vehicle 20 Fertilizer tank 37 Ventilation fan 50 Branch pipe 54 Bellows 56 Fertilizer discharge pipe 57 Discharge port 61 Shutter 64 Adjustment lever 80 Wire 82 Wire 86 Operation lever

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-2-261305 (JP, A) JP-A-57-43712 (JP, U) JP-A-3-19561 (JP, U) JP-A-4-19561 78955 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) A01C 15/00-21/00

Claims (3)

(57) [Claims] 1. A fertilizer tank 20 is provided at a rear portion of a body of a power vehicle 1.
The blower fan 37 and the left and right lateral branch pipes 50 are provided near the fertilizer tank 20.
A pair of fertilizer discharge pipes 5 is provided at both ends of bellows via bellows 54, 54.
6 and 56, and the discharge tube 5 is attached.
The upper and lower discharge ports 57, 57 are supported from the bellows 54 in an up-down and front-rear direction through an operation lever 86 so as to be able to adjust the angle as needed. The operation lever 86 is pushed and pulled in the front-rear direction. A fertilizer spraying apparatus wherein the front and rear direction and the vertical direction of the discharge port 57 are adjusted only on one side or both sides by a swinging operation in a horizontal direction. 2. Between the operating lever 86 and the discharge tube 56,
The fertilizer application device according to claim 1, wherein the fertilizer application device is connected by wires (80, 82). 3. A shutter 61 is rotatably provided at the center of the branch pipe 50, and the shutter 61 is adjusted by an adjustment lever 64 so that the fertilizer discharge direction is changed to the fertilizer discharge pipe 56 on one or both sides. The fertilizer application device according to claim 1 or 2, wherein the device is switched.