JPS5936965Y2 - Hose holding structure of tractor-mounted fertilizer applicator - Google Patents

Description

[Detailed description of the invention] The present invention relates to a hose holding structure for a tractor-mounted fertilizer applicator, which enables the fertilizer to be spread within the tillage area and stirred and mixed when spreading the fertilizer before plowing work. By using a regular pitch on the tractor to support or attach a member for specific restraint of spreading, the structure is simplified, installation and removal are facilitated, and the hoses of a pair of left and right fertilizer spreaders can be connected at the same time. The purpose is to maintain the structure and to avoid interference with the tilling machine.

When a tractor is equipped with a fertilizer applicator and tillage machine to carry out fertilization and tillage work, it is common practice to spread the fertilizer before the tillage work, and then stir and mix the fertilizer and tilled soil during the tillage work. It is.

For this reason, it is necessary to distribute the fertilizer discharged from the fertilizer applicator within the area being tilled, but if multiple fertilizer discharge hoses are installed, each hose can simply be placed within the tilled area. In this case, each hose sometimes swung left and right due to running vibrations or other causes, causing spray to be sprayed outside during plowing.

The present invention was devised in view of this point, and is a tractor having a PTO shaft and a hitch box below the PTO shaft in the widthwise center of the rear of the vehicle body, and a PTO shaft that can be freely raised and lowered via a three-point link. A tilling machine is attached so that power can be transmitted from the shaft through a transmission shaft, and a fertilizer applicator having a flexible fertilizer discharge hose hanging down in front of the tilling work area is installed on the left and right side of the rear of the vehicle body.
In the case where a hose holder for holding the fertilizer discharge hose is provided on the vehicle body side, the hose holder is formed into a forked shape in plan view and is supported by the pitch box via a hitch pin. The hose holder is characterized in that a hose holder is formed at both ends thereof, through which the lower part of each fertilizer discharge hose is inserted.

Hereinafter, specific examples of the present invention will be described in detail according to the drawings, and the term "fertilizer" as used in the present invention includes not only powdered fertilizers and liquid fertilizers, but also soil improving or modifying agents such as lime.

In FIGS. 1 to 3, 1 is a tractor, 2 is a fertilizer applicator, and 3 is a tiller.

The tractor 1 has a wheel type, and numeral 4 denotes a pair of left and right rear wheel tires, each of which has lugs 5 protruding evenly in the circumferential direction from its outer periphery.

Reference numeral 6 denotes a tractor body, which has a transmission case as its structure, and has rear axles 7 on the left and right sides of the body 6, and drives each rear wheel tire 4 through a built-in transmission mechanism in each 7. do.

Reference numeral 8 denotes a device for lifting the work equipment, which is placed on the rear upper surface of the tractor body 6, and is usually operated by hydraulic pressure to lift a pair of left and right lift arms 9.
to raise and lower.

Reference numeral 10 denotes a pair of left and right rear wheel fenders, which are located inside each of the rear wheel tires 4, and whose lower portions are normally supported by a part of the rear axle 7.

Reference numeral 11 denotes a driver's seat, which is provided on the tractor body 6 between the fenders 10, and is supported via a lifting device 8 in the embodiment.

Reference numeral 12 denotes a pitch portion, which is provided at the lower rear surface or rear bottom portion of the vehicle body 6, but in the embodiment, a detachable bolt 1 is provided.
3 shows an example in which the pitch box 14 is attached to the lower part of the rear surface of the vehicle body 6 and at the center of the vehicle body 6 in the left and right direction, and the pitch box 14 is U-shaped in side view, and the rear side is open. .

And the upper and lower flanges 14a, 1 of the pitch box 14
4b has hit holes 16a and 16b for the hit pin 15, so that the hit pin 15 can be inserted into and removed from the hit holes 16a and 16b.

17 is a work equipment connection link, the figure shows a 3-point link,
The tilling machine 3 is attached to the tractor 1 by this link 17, and each lift arm 9 of the lifting device 8 and the link 17
By connecting the lift rod 18 between the plowing machine 3 and the tractor 1, the tilling machine 3 can be moved up and down with respect to the tractor 1.

The tilling machine 3 includes a machine frame 3a, a rotary tiller 19, etc., and power from a PTO shaft of the tractor 1 is coupled to the tiller 19 through a transmission shaft 20 with a universal joint.

Reference numeral 21 denotes a pair of left and right cylindrical rods, each of which is erected inside each fender 10, with each base 21a being removably attached to the rear wheel image 7 and supported by a device 22.

Reference numeral 23 denotes a pair of left and right L-shaped rods, each rod 23 is fitted into the cylindrical rod 21 so as to be vertically movable, and a fastening bolt 24
The height can be adjusted freely in the height direction, and when the specified mounting position is set, the other end of each rod 23 is in the horizontal direction and the I.
It extends behind the.

A tie rod 25 is fixedly installed to connect the pair of L-shaped rods 23 to each other, and is connected to the tractor 1 as shown in FIG.
The fertilizer applicator 2 extends outward in the width direction of the fertilizer 2 and is supported via the tie rod 25. A fertilizer stirring device 28 and a fertilizer feeding device 29, a fertilizer discharge hose 30 connected in communication with the discharge port of the tank 27, and a device 31 for driving the stirring device 28. Devices 32 etc. that interlock the stirring device 28 and the feeding device 29 are each independently provided, and each fertilizer discharge hose 30 extends downward and is located within the tilling width of the tilling machine 3 and in front.

Each hose 30 is flexible, and each hose 30 is connected to the work machine 3.
A hose holder 32 is provided for positioning preferably in the center of the tiller.

As shown in FIGS. 3 and 4, the hose holder 32 has a pair of symmetrical plates or solid arms 35 extending from a cylindrical body 34 at its base to form a bifurcated shape in plan view. In addition, a C-shaped or O-shaped hose holding part 36 is formed at the free end of each arm 35, and each hose 30 is inserted into each hose holding part 36 from the longitudinal direction. 34 is inserted into the pitch box 14 and supported by the hit pin 15.

In addition, by making the inner circumferential surface of the glasses round in the hose holding part 36, when the free end of the hose 30 is inserted and held, the directivity of the hose 30 can be freely controlled and the pain in the hose 30 can be reduced.

Moreover, when the hose holding part 36 is C-shaped, it is preferable that the width of the opening part 36a is smaller than the diameter of the hose, and that the opening part 36a is located on each inner side.

Referring to FIGS. 1, 5, and 6, the drive device 3
1. The interlocking device 32 and the tank shape and internal structure are illustrated.

First, the drive device 31 has a transmission case 37 with a built-in chino transmission body, and the driven side of the case is held so as to be swingable around a stirring shaft 38 as a fulcrum, and is urged downward by a bullet 39. There is.

A drive wheel 43 having a circumferential protrusion 42 is fixed to the drive shaft 40 of the case 37 with a pin 44, and the protrusion 42 is urged to come into elastic contact with the tire lug 5 by an elastic force 39.

At this time, as shown in FIGS. 1 and 2, the drive wheel 43 is
0 through the pin 44, the protrusion 42 can be replaced with a different one with a smaller pitch force.

Incidentally, a sprocket is fixed to each shaft 38° 40 of the transmission case 37, and a chino transmission is wound around this sprocket, so that when the protrusion 42 comes into contact with the tire lug 5, the stirring shaft 38 is driven. , the fertilizer is stirred by an agitator 45 shown in FIG.

Sprockets 46 and 47 are fixed to the stirring shaft 38 and the delivery roll shaft 29a, respectively, and a chino 48 is wound between them to form an interlocking device 32.

The feed roll 49 is attached to the roll shaft 29a with a key 50. At this time, the bearing body 51 is detachably attached to the tank 27 with a bolt 52, and the roll 49 is attached with a pin 53.
With the assembly and disassembly structure, the roll 49 can be replaced with one having a different depth and circumferential pitch of the receiving groove 49a.3 In other words, the bearing body 51 is removed, the pin 53 is pulled out, and the roll 49 is pulled in the axial direction. Once pulled out, the roll 49 can be attached via the opening 54.

In addition, in Fig. 1, 55 is a transmission release body;
The transmission case 37 and the work machine frame 18 are connected by a turnbuckle, and when the I-tractor 1 is turned,
When the work implement 3 is lifted up, the transmission case 37 is pushed up via the release body 55, which contributes to interrupting the wasteful supply of fertilizer.

'' - In the construction, if the tractor 1 is driven forward and the tilling machine 3 is interlocked, fertilization and spreading work and plowing work are carried out.

That is, the tilling section 19 receives power from the tractor 1 and actively drives it around the horizontal axis to carry out the plowing and reversal work of the field.
Implemented according to I.

At this time, the fertilizer applicator 2 is driven by the drive device 31 by the tire lug 5.
is driven to operate the stirring device 28 to stir the fertilizer in each tank 27, and to operate the delivery device 29 via the interlocking device 32 to sequentially send out the stored fertilizer into the receiving groove 49a of the delivery roll 49. The fertilizer is sprayed in front of the plowing area through the fertilizer discharge hose 30, and the spread fertilizer is agitated and mixed with the top of the plowing area in the waste area 19.

At this time, each hose 30 is held by the holding part 36 of the holding body 32, and the holding body 32 is held by the cylindrical body 34 at the base.
are inserted into the pitch box 14 from above and below, and attached to the vehicle body 6 with the hitch pins 15. By positioning the pair of holding parts 36 within the tilling width, each hose 30 can be prevented from swinging laterally. Fertilizer can be spread preferably in the center of the tillage area without having to do anything.

In particular, since the pitch box 14 is located at the lower part of the vehicle body 6 and at the center of the vehicle body, the holding portion 36 extending in symmetrical positions via the pair of arms 35 is supposed to hold the lower end of the hose 30. This means that the free end of the hose can be kept to a minimum from swinging back and forth and from side to side.

According to the present invention detailed above, one hose holder has two
The position of the actual fertilizer discharge hose can be regulated, and the position can also be regulated with respect to the tractor body.Furthermore, it can be easily and inexpensively attached to the vehicle body by using it as a pitch box without using any special attachments. The hose is easy to hold because it is simply inserted, and even when the tiller is raised and lowered, the transmission shaft simply enters the forked part of the hose holder and does not interfere with the fertilizer applicator and hose. Since it is immobile, it is possible to apply fertilizer in a constant position at all times, and the state of fertilization can remain unchanged even if the plowing depth changes.

[Brief explanation of drawings]

Figure 1 is an overall side view, Figure 2 is a rear view, Figure 3 is a perspective view of important parts, Figure 4 is a sectional view taken along line 4-4 in Figure 3, and Figure 5
, 2 is a front view and a cross-sectional view of the drive wheel, and FIG. 6 is a cross-sectional view of the inside of the tank. 1...Tractor, 2...Fertilizer, 3.
..... Tilling machine, 14 .... hitch box, 15 .... hitch pin, 27 .... fertilization tank, 30 .... fertilizer discharge hose, 32・・・
...Holding body, 34... Mounting cylinder, 35.
...Arm, 36...Holding part.

Claims (1)

[Scope of utility model registration request] A tilling machine is attached to a tractor having a PTO shaft in the widthwise center of the rear part of the vehicle body and a hitch box below the tractor so that it can be raised and lowered via a three-point link, and power can be transmitted from the PTO shaft to a transmission shaft. A pair of left and right fertilizer applicators each having a flexible fertilizer discharge hose hanging down in front of the tilling work area are arranged at the rear of the vehicle body, and a hose holder for holding the fertilizer discharge hose is provided on the vehicle body side, The hose holder is formed into a bifurcated shape in plan view and is supported by the hitch box via a hitch pin, and a hose holder is formed at both ends of the hose holder, through which the lower part of each fertilizer discharge hose is inserted. A hose holding structure for a tractor-mounted fertilizer applicator.