JP2012196169A - Balance weight structure of walking-type movable farm machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a machine body to be stably fixed by utilizing a balance weight.SOLUTION: The walking-type tending machine 1 equipped with the balance weight 11 at the front terminal part of the machine body is constituted as follows. The balance weight 11 having an upper edge part 11a extending in the right and left directions of the machine body, a lower edge part 11b extending in the right and left directions and to be fixed to the machine body, and a grip hole 11c formed between the upper edge part 11a and the lower edge part 11b so as to be long in the right and left directions of the machine body is regulated so as to have a protruded part 11f protruded upward in the right and left center parts of the upper edge part 11a of the balance weight 11, and a rope-hooking hole 11g formed in the protruded part 11f and having a right and left widths narrower than the grip hole 11c.

Description

  The present invention relates to a balance weight structure for a walking-type mobile agricultural machine such as a walking-type management machine.

  In general, in a walking-type mobile farm machine such as a walking-type management machine, a heavy-duty engine is mounted on the front of the aircraft to balance the aircraft in order to perform various farming work by attaching a work machine to the rear of the aircraft. I have to. However, if you want to balance the front and rear of the fuselage only with the engine weight, it is necessary to make the engine protrude considerably forward, and in that case, the balance weight is installed in the vicinity of the engine in the front of the fuselage in order to hinder the longitudinal length of the aircraft By doing so, the front-rear balance of the aircraft is adjusted.

  By the way, when the aircraft is lifted and transported, the rear side of the aircraft can grip and lift the handle for traveling operation extending rearward, but the front side of the aircraft has no particular part to be gripped. As a result, the bottom part (engine frame, etc.) is lifted, and as a result, the operator's lifting posture becomes worse and there is a concern that the lower back may be hurt.

  Therefore, the present applicant has previously proposed a balance weight that functions as a handle portion (gripping portion) when lifting the front part of the machine body (see Patent Document 1). According to such a balance weight, although the front-rear balance of the airframe can be adjusted, it is possible to improve the posture of the operator when lifting the airframe and prevent the occurrence of inconveniences that hurt the waist.

Japanese Patent No. 4512552

  By the way, when a walking type mobile agricultural machine is transported by a vehicle such as a truck, the body may be fixed using a rope in order to prevent the body from moving or toppling during transportation. At this time, in the walking type mobile agricultural machine of Patent Document 1, it is possible to perform rope hanging on the front side of the machine body using the handle hole (through hole) formed in the balance weight. Because it is long in the left and right direction of the fuselage because the hand can be inserted when gripping, when the rope is hooked on the handle hole, the balance weight and the rope move relatively in the left and right direction of the fuselage, There was a problem that the airframe could not be fixed well.

  The present invention has been created in order to solve these problems in view of the above situation, and is a walking-type mobile agricultural machine having a balance weight at the front end of the machine body. An upper edge portion extending in the left and right direction of the body and a lower edge portion fixed to the body, and a handle hole formed between the upper edge portion and the lower edge portion so as to be elongated in the left and right direction of the body. In preparation, a convex portion that protrudes upward is formed in the left and right central portion of the upper edge portion of the balance weight, and a rope hooking hole that is narrower in the left and right width than the handle hole is formed in the convex portion.

  According to the first aspect of the present invention, since the rope hanging hole having a narrower width than the handle hole is formed in the balance weight, if the rope is hung using the rope hanging hole, the balance weight and the rope are in the lateral direction of the aircraft. It is possible to suppress the relative movement of the airframe and fix the airframe satisfactorily. Moreover, the rope hooking holes are formed on the convex part protruding from the left and right center of the balance weight, so that the rope can be hooked on the left and right center of the fuselage to secure the fuselage in a well-balanced manner, and the center of gravity of the balance weight Will not be biased to either the left or right side.

It is a right view of a walking type management machine. It is the perspective view which looked at the balance weight from the lower right. It is principal part sectional drawing which shows the attachment structure of a bonnet. It is a principal part disassembled perspective view which shows the attachment structure of a bonnet.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a walking-type management machine (walking-type mobile farm machine), and the walking-type management machine 1 includes a mission case 2 that is also used as a body frame.

  Wheels 3 are attached to the left and right sides of the transmission case 2 via axles (not shown). A rotary tiller 4 is formed at the rear of the transmission case 2, and an engine is mounted at the front of the transmission case 2. The engine 5 is mounted via the mounting frame 5a.

  The power of the engine 5 is input to the transmission case 2 through a transmission unit 6 including a belt transmission mechanism, and after being shifted by a transmission mechanism in the transmission case 2, is transmitted to the wheels 3 and the tilling unit 4.

  A handle 7 is attached to the rear part of the mission case 2 so as to protrude rearward and obliquely upward. The handle 7 is provided with a clutch operating lever 8 and a throttle operating lever 9, and a clutch mechanism (not shown) provided in the transmission unit 6 is turned on and off in accordance with the operation of the clutch operating lever 8. In response to the operation No. 9, the rotational speed of the engine 5 is changed.

  Further, a transmission operation lever 10 is provided at the rear of the mission case 2 so as to protrude rearward and obliquely upward. The speed change lever 10 is an operating tool for speed changing the speed change mechanism in the mission case 2, and according to the operation of the speed change lever 10, the traveling speed (the driving speed of the wheels 3) and the driving of the tillage unit 4 The speed and direction of rotation are changed.

  The front end portion of the engine mounting frame 5a is a balance weight mounting portion, and a balance weight 11 for adjusting the front-rear balance of the airframe is mounted here.

  As shown in FIG. 2, the balance weight 11 includes an upper edge portion 11a, a lower edge portion 11b, a handle hole 11c, a left side portion 11d, a right side portion 11e, a convex portion 11f, and a rope hooking hole 11g.

  The upper edge portion 11a is formed so as to extend in the left-right direction of the machine body, and its front-rear width is set to such an extent that it can be gripped by hand.

  The lower edge portion 11b is formed so as to extend in the left-right direction of the machine body and has a pair of left and right bolt holes 11h penetrating in the front-rear direction of the machine body. Then, bolts (not shown) inserted through these bolt holes 11h from the front of the fuselage are screwed into screw holes (not shown) formed in the front end portion of the engine mounting frame 5a, whereby the balance weight 11 is engine mounted. It is fixed integrally with the mounting frame 5a.

  The handle hole 11c is a long hole that is formed between the upper edge portion 11a and the lower edge portion 11b so as to be longer in the left-right direction of the machine body. The left-right width of the handle hole 11c is at least four fingers (index finger, middle finger). , Ring finger and little finger).

  The left side portion 11d is formed so as to connect the left ends of the upper edge portion 11a and the lower edge portion 11b and further extend rearward along the left side surface of the engine mounting frame 5a.

  The right side portion 11e connects the right ends of the upper edge portion 11a and the lower edge portion 11b, and is further formed to extend rearward along the right side surface of the engine mounting frame 5a.

  The convex portion 11f is formed so as to protrude upward in the left and right central portion of the upper edge portion 11a. In the present embodiment, the front and rear width thereof is substantially the same as the front and rear width of the upper edge portion 11a, and the left and right width is handled. It is substantially the same as the left-right width of the hole 11c.

  The rope hooking hole 11g is formed so as to penetrate the convex part 11f in the longitudinal direction of the machine body, and the right and left width thereof is set to be narrower than the left and right width of the handle hole 11c.

  Next, the operation of the balance weight 11 configured as described above will be described.

  When plowing work is performed using the walking management machine 1 configured as described above, the operator starts the engine 5 and then sets the engine speed by the throttle operation lever 9 while holding the handle 7 behind the machine body. Alternatively, a shift operation is performed by the shift operation lever 10 and the clutch operation lever 8 is turned on. The walking-type management machine 1 drives the wheels 3 and the tillage unit 4 in accordance with these operations and starts low-speed running and tilling in the field. The balance weight 11 of the part adjusts the front / rear balance of the airframe well.

  Further, when the walking type management machine 1 is lifted and transported by hand, the rear side of the machine body can be lifted by grasping the base of the handle 7 extending rearward, and the front side of the machine body can be held by holding the balance weight 11. Can be lifted. That is, the balance weight 11 has a long handle hole 11c in the left-right direction of the machine body, and the upper edge portion 11a can be gripped by inserting a finger of the hand here, so that the front-rear balance of the machine body can be adjusted well. Although it is a thing, it can function as a handle when lifting the front part of the fuselage.

  Further, when the walking type management machine 1 is transported by a vehicle such as a truck, the body may be fixed using a rope in order to prevent the body from moving or falling during transportation. At this time, the walking-type management machine 1 can use the balance weight 11 to hook the front side of the machine. Since the rope can be hung not on the handle hole 11c which is long in the left-right direction of the machine body but on the rope-hanging hole 11g having a narrower left-right width than the handle hole 11c, the balance weight 11 and the rope move relatively in the left-right direction of the machine body. This can be suppressed and the airframe can be fixed well.

  Next, the bonnet mounting structure of the walking management machine 1 according to the present embodiment will be described with reference to FIGS. 3 and 4.

  A bonnet 12 is provided at the front of the machine body of the walking management machine 1. The bonnet 12 is provided so as to reach from the front end of the airframe to the front end of the fuel tank 13 and covers the upper side of the engine 5. Such a bonnet 12 needs to be configured to be detachable or openable in order to perform maintenance of the engine 5 or the like. However, in the conventional walking type management machine, the bonnet is fixed with a fixing part such as a screw. Therefore, there is a problem that it takes time to attach / detach and open / close the bonnet.

  In order to solve the above-described problem, the bonnet mounting structure of the present embodiment enables the bonnet 12 to be attached and detached by a one-touch operation. Specifically, in addition to the bonnet 12, the front bracket 14, A cover 15, a fuel tank bracket 17, a round bar 18 and a gripping spring 19 are provided.

  The front bracket 14 is a metal plate-like member, and is fixed to the upper surface portion of the front end portion of the machine body. A plurality of attachment holes 14 a for attaching the under cover 15 are formed in the front end portion of the front bracket 14.

  The under cover 15 is a resin member, like the bonnet 12, and is attached on the front bracket 14 in order to cover the gap between the front end portion of the bonnet 12 and the front bracket 14. Specifically, it has a pair of left and right mounting holes 15a, and is fixed to the front bracket 14 by bolts (not shown) that pass through the mounting holes 15a and the mounting holes 14a of the front bracket 14.

  The under cover 15 has a stepped portion 15b having a circular arc shape in plan view, and an engagement hole 15c capable of holding the front end side of the bonnet 12 in an engagement state is formed at the front end portion thereof. That is, the front end portion of the bonnet 12 is integrally formed with a mounting claw 12a having an L-shape in side view, the bonnet 12 is in a front-rear and rear-high standing position, and the mounting claw 12a is engaged with the under cover 15. When the bonnet 12 is rotated backward with the attachment claw 12a as a fulcrum after being inserted into the joint hole 15c, the bonnet 12 is in a closed posture covering the upper side of the engine 5. In the closed position, the attachment claw 12a engages with the step portion 15b of the under cover 15 from the inside and is prevented from coming off from the under cover 15, whereby the front end side of the bonnet 12 is fixedly attached.

  A plurality of contact claws 12b project from the front inner peripheral portion of the bonnet 12, and these contact claws 12b come into contact with the step portion 15b of the under cover 15 from the side to close the bonnet 12. The backlash of the bonnet 12 in the left-right direction is regulated.

  The fuel tank bracket 17 is a metal plate-like member, and is erected on the middle part of the airframe to support the fuel tank 13. A round bar support member 18a is integrally welded to the front surface of the upper end of the fuel tank bracket 17, and the round bar 18 is integrally formed between a pair of left and right protrusions 18b formed on the round bar support member 18a. It is erected.

  The gripping spring 19 is a plate spring member that can grip the round bar 18 from above, and is attached to the lower surface of the rear end of the bonnet 12. As described above, when the bonnet 12 is closed based on the turning operation with the mounting claw 12a as a fulcrum, the gripping spring 19 grips the round bar 18 from above when the bonnet 12 reaches the closed posture. . Thereby, the rear end side of the bonnet 12 is fixedly attached to the fuel tank bracket 17.

  The gripping of the round bar 18 by the gripping spring 19 is released by the lifting operation force when the bonnet 12 is opened, but the gripping force (elastic pinching force) of the gripping spring 19 is set so as not to be released by the vibration of the airframe. Is done.

  According to the present embodiment configured as described, in the walking type management machine 1 having the balance weight 11 at the front end of the aircraft, the balance weight 11 is extended to the upper edge portion 11a extending in the left-right direction of the aircraft and the left-right direction of the aircraft. The balance weight 11 is provided with a lower edge portion 11b fixed to the airframe and a handle hole 11c formed between the upper edge portion 11a and the lower edge portion 11b so as to be elongated in the left-right direction of the airframe. A convex portion 11f that protrudes upward is formed at the left and right central portion of the edge portion 11a, and a rope hooking hole 11g having a width that is narrower than the handle hole 11c is formed in the convex portion 11f. If the rope is hooked, the balance weight 11 and the rope can be restrained from relatively moving in the left-right direction of the machine body, and the machine body can be fixed well.

  Moreover, since the rope hooking hole 11g is formed on the convex part 11f protruding from the left and right central part of the upper edge part 11a of the balance weight 11, not only can the rope be hung on the left and right center of the airframe to fix the airframe in a balanced manner, The position of the center of gravity of the balance weight 11 does not deviate to the left or right side.

DESCRIPTION OF SYMBOLS 1 Walk type management machine 2 Mission case 3 Wheel 4 Tillage part 7 Handle 11 Balance weight 11a Upper edge part 11b Lower edge part 11c Handle hole 11f Convex part 11g Rope hanging hole

Claims (1)

In the walking type mobile agricultural machine with a balance weight at the front end of the aircraft,
In the balance weight,
An upper edge extending in the left-right direction of the aircraft,
A lower edge extending in the left-right direction of the aircraft and fixed to the aircraft;
In providing a handle hole formed so as to be long in the left-right direction of the fuselage between the upper edge portion and the lower edge portion,
A balance of a walk-type mobile agricultural machine characterized in that a convex part protruding upward is formed at the upper left and right central parts of the balance weight, and a rope hooking hole having a narrower left and right width than the handle hole is formed in the convex part. Weight structure.

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