JPH08152A - Structure for housing boom of diffusion device in mobile vehicle for operation - Google Patents

Abstract

PURPOSE:To prevent bent parts of a boom from deforming, breaking, etc., and reduce the weight of an diffusion device by preventing the tip side of the boom of the diffusion device from swinging by a specific constitution without deteriorating the properties of alighting and boarding of a mobile machine body in a mobile vehicle for operation. CONSTITUTION:This structure for housing a boom of an diffusion device 1 is constituted by respectively installing bent parts (9b) capable of being bent and housed with the boom tip side directed to the front of the machine body in right and left protruding parts of the boom 9 protruding to the right and left outer lateral sides of the diffusion device 1 connected to the rear of the mobile machine body 2 in a mobile vehicle for operation, and protrusively installing supporting stays 19 at the rear of alighting and boarding positions 17 of the mobile machine body 2 so as to prevent the tip side of the bent and housed boom 9 from swinging. Furthermore, the second bent parts (9c) for directing parts overlapping with the alighting and boarding positions 17 of the mobile body 2 upward and bending and housing the parts are preferably installed on the tip side of the boom.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boom storage structure for a spreader in a traveling vehicle such as a paddy field vehicle.

[0002]

BACKGROUND OF THE INVENTION Generally,
This type of spreader is connected to the work machine frame that is connected to the work machine body via a lifting link, a pump that is linked to the power take-off shaft of the travel machine body, and the left and right outer sides of the work machine frame. And a boom projecting toward the front of the boom, and is configured to spray the sprayed material to be pumped by the pump from the spraying nozzle provided on the boom. Other than that, it is desirable to fold and store. However, in the past, the left and right protruding parts of the boom were formed with bendable parts so that the tip of the boom could be bent toward the front of the machine, and the boom was stored along the side of the machine. Therefore, there is a fear that the bending part receives a large moment due to the vibration of the boom tip side accompanying the traveling of the machine body and is deformed or damaged.For this reason, conventionally, the bending part and the boom are reinforced to reinforce the spreader. It was the actual situation that caused a significant weight increase.

[0003]

SUMMARY OF THE INVENTION The present invention was devised with the object of providing a boom storage structure for a spreader in a work vehicle capable of eliminating these drawbacks in view of the above circumstances. And at the rear of the vehicle,
In a traveling vehicle for work, which is formed by connecting a spreader having a boom projecting to the left and right outside, a bending section capable of being folded and stored with the boom tip side facing the front of the machine is formed at the left and right projecting sections of the boom. On the other hand, at the rear of the boarding / alighting position of the traveling machine body, a supporting stay for projecting and supporting the tip end side of the bent and stored boom is projectingly provided. Further, according to the present invention, the boom tip side is prevented from swaying without deteriorating the boarding / alighting property of the traveling machine body, and the weight of the spreader can be greatly reduced.

[0004]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a spreader (boom sprayer), and the spreader 1 is connected to a rear portion of a traveling machine body 2 through a three-point lifting link 3 so as to be vertically movable. An input shaft 6 connected to a power take-off shaft 5 of the traveling machine body 2, a pump 8 driven by power input from the input shaft 6 via a belt transmission mechanism 7, and the like are integrally assembled to the frame 4. There is.

Reference numeral 9 denotes a boom projecting from the frame 4 toward the left and right outer sides, and a pipe 11 having nozzles 10 provided at predetermined intervals is juxtaposed on the boom 9. , The liquid pumped from the pump 8 is configured to be jetted from the nozzle 10, but the central portion of the boom 9 swings up and down on a support shaft 12 projecting rearward from the rear end of the frame 4. It is supported freely.

Further, 13 is an actuator for horizontal control which expands and contracts based on the detection of the tilt sensor 14 on the side of the traveling machine body 2. The actuator 13 is a boom 9
It is interposed between an arm 9a projecting in the center of the frame and a bracket 4a projecting in the frame 4, and the boom 9 can be swung up and down with respect to the frame 4 based on its expansion and contraction operation. ing. That is, the position of the power transmission path from the power take-off shaft 5 to the pump 8 is fixed, and horizontal control is performed to maintain only the boom 9 in a horizontal state. Reference numeral 15 is a stroke sensor provided in parallel with the actuator 13 so as to feed back the operating length of the actuator 13.

By the way, the left and right protruding portions of the boom 9 are each formed with a bent portion 9b capable of bending the boom tip side toward the front of the machine body, and the boom 9 is attached to each bent portion 9b. A cylinder 16 that transforms the work state and the stored state is provided. Further, a boom tip end that overlaps with the boarding / alighting portion 17 of the traveling machine body 2 in a side view can be bent upward on the boom tip end side. The second bent portion 9c is formed. That is, the boom tip portion is bent and stored so as not to prevent the traveling vehicle body 2 from getting in and out, but the boom tip portion that can be bent upward is selected by inserting the pin 18 into the pin holes A and B. The work position and the storage position are fixed respectively.

Further, 19 is a supporting stay projecting from the left and right side surfaces of the traveling machine body 2 toward the outside, and the supporting stay 19 has a contact plate 19a provided at the tip end thereof bent and accommodated. The boom 9 in the stowed state is oscillated by being positioned below the boom 9, and the boom 9 is provided at a position rearward of the boarding / alighting section 17 so as not to prevent the traveling vehicle body 2 from getting in and out. . Furthermore, 20 is a shock absorber provided at a position facing the support stay 19 of the boom 9, and the shock absorber 20 includes a contact pin 21 into which the boom 9 is vertically movably inserted and the contact pin 21. It consists of an ammunition 22 that always urges downwards, and the contact pin 2
1 is provided at the lower end of the support stay 1
The boom 9 is elastically supported by abutting against the abutment plate 19a of the boom 9.

On the other hand, reference numeral 23 denotes a tank stay provided on the traveling machine body 2. The tank stay 23 is arranged so as to position the integrally assembled tank 24 on the rear wheel axle 25, and is moved up and down. It is composed of a pair of left and right so as to sandwich the link 3. That is, by positioning the tank 24 on the rear wheel axle 25 on the traveling machine body 2 side, it is possible to reduce the weight and size of the working machine portion, maintain a good front-rear balance of the machine body, and further, to elevate the lifting link 3 that moves up and down. By disposing the tank 24 while avoiding it, the tank position is made as low as possible to lower the body weight. Further, a replenishing portion 24a which is openable and closable is provided on the upper surface of the tank 24, and the replenishing portion 24a is formed so as to project forward from the position of the rear wheel axle 25. That is, the supply unit 24
By making a close to the boarding / alighting section 17 of the traveling machine body 2, the tank 24 can be easily replenished.

By the way, the left and right tanks 24 are connected to each other via a communication pipe 26, and are further connected to the pump 8 via a suction pipe 27 connected to an intermediate portion of the communication pipe 26. , The communication pipe 26
Is piped in the left-right direction in the vicinity of the body-side link fulcrum between the upper and lower links 3a and 3b forming the lifting link 3. That is, by being arranged in the space S surrounded by the operation areas of the upper and lower links 3a and 3b, it is possible to avoid the interference due to the lifting and lowering of the links.

FIG. 7 is a plan view showing a second embodiment, in which the boom 9 is replaced by a pipe 11 for spraying liquid, and a dusting cylinder 28 for spraying powder is used. Are arranged in parallel to enable the powder to be sprayed, but the bent portion 9 is provided so as to enable the same folded storage as in the first embodiment.
b and 9c are formed by a bendable bellows pipe 29.

In the embodiment of the present invention constructed as described above, the boom 9 has a tip end side which is bent and stored toward the front of the machine body by bending the first bending portion 9b. By bending the bent portion 9c of the traveling body 2, the portion of the traveling machine body 2 overlapping with the boarding / alighting portion 17 is folded and stored in the side view. By being in contact with the support stay 19 projecting at a position rearward of the portion 17, the swing is stopped.
Therefore, it is possible to reliably prevent the bending portion 9b from being deformed or damaged by a large moment due to the vibration of the boom tip side due to the traveling of the machine body. As a result, the bending portion 9b and the boom 9 need not be reinforced. Therefore, the weight of the spreader 1 can be significantly reduced.

In addition, since the support stay 19 is provided at a position rearward of the boarding / alighting section 17 of the traveling machine body 2, there is no inconvenience that the operator gets in and out of the traveling machine body 2. It is possible to improve the sex.

Further, in the embodiment, since the contact pin 21 that constantly urges downward is provided at the position of the boom 9 facing the support stay 19, the boom 9 is elastically swayed. Perhaps it is possible to improve the anti-swing effect, but even if there is a difference in the height of the left and right booms 9, it is possible to contact the support stays 19 for reliable anti-swing.

[0015]

In summary, since the present invention is constructed as described above, the boom which protrudes to the left and right outside is
Although it is configured so that it can be bent and stored toward the front of the machine body, its boom tip side is reliably swayed by a support stay protruding from the traveling machine body. Therefore, it is possible to reliably prevent the bending portion from being deformed and damaged by a large moment due to the vibration of the boom tip side due to traveling of the machine body. As a result, the bending portion and the boom need not be reinforced and the spreader can be prevented. It can be remarkably reduced in weight.
Moreover, since the support stay is provided at a position rearward of the boarding / alighting portion of the traveling machine body, there is no inconvenience of disturbing the getting on / off of the operator, and thus the traveling property of the traveling machine body can be improved. it can.

[Brief description of drawings]

FIG. 1 is a side view of a traveling body.

FIG. 2 is a plan view of the same.

FIG. 3 is a rear view of the spreader.

FIG. 4 is a sectional view of a main part of the boom.

FIG. 5 is a rear view showing an arrangement state of communication pipes.

FIG. 6 is a side view of the same.

FIG. 7 is a plan view of a traveling machine body showing a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sprayer 2 Traveling machine 3 Lifting link 4 Frame 8 Pump 9 Boom 9b 1st bending part 9c 2nd bending part 13 Actuator 17 Boarding part 19 Support stay 24 Tank

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiro Kuwagaki 667 Izuyacho, Higashi Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 Mitsubishi Agricultural Machinery Co., Ltd.

Claims (1)

[Claims] 1. A working traveling vehicle comprising a spreader having a boom projecting laterally outwardly connected to a rear portion of a traveling machine body, wherein the boom tip end side is directed forward of the machine body to the left and right projecting portions of the boom. While forming a folding part that can be folded and stored, a work stay characterized in that a support stay for supporting the tip end side of the folded and stored boom is installed behind the entry / exit position of the traveling body. Boom storage structure for car spreaders.