JP5097484B2 - Management machine - Google Patents

Description

  The present invention relates to an axle work type management machine used when performing various work such as tillage work in a field.

  Conventionally, in an axle work type management machine that performs various operations in a field, for example, when performing a tilling work, a resistance bar is attached to the rear part of the management machine and the work is performed while the tip of the resistance bar is grounded. Thus, a technique for generating a resistance force to the traction force of the management machine and adjusting the traveling speed and tilling depth of the management machine by the resistance force is known. In addition, when moving between farm fields, it is possible to easily move by attaching a moving wheel instead of the resistance rod and grounding the moving wheel, improving operability and operator fatigue. Techniques for reducing this are well known. In the technique as described above, the replacement work of the resistance rod and the moving wheel is complicated, which causes an increase in operator fatigue and a reduction in work efficiency.

For these technologies, a resistance rod attached to the rear side of the management machine main body so as to be pivotable in the front-rear direction and a moving wheel provided integrally with the resistance rod are provided, and the resistance rod is pivoted back and forth. By doing so, a technique that enables switching between a storage state in which the resistance bar is stored and a work state that projects downward from the management machine body and is used for work is known (for example, Patent Document 1). reference).
JP 2005-312362 A

  In the configuration disclosed in Patent Document 1 described above, the moving wheel protrudes downward from the management machine main body in the stored state. Thereby, in the storage state, it can move using the said wheel for a movement. Further, the storage state and the working state can be quickly switched by operating the steering handle. However, since a moving wheel and a resistance rod are required in the storage state and the working state, respectively, this is disadvantageous in that the number of parts increases. Further, since the moving wheel and the resistance rod are integrally provided, the integrated member becomes large, which is disadvantageous in that it may hinder the operation of the operator during work or storage.

  Therefore, an object of the present invention is to provide a management machine in which a moving wheel can also function as a resistance rod that generates a resistance force against a traction force of the management machine.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

In claim 1, in the axle working type management machine in which the tilling portion is fixed to the axle, a grounding wheel is disposed behind the tilling portion, and resistance imparting means for imparting resistance to rotation of the grounding wheel is provided. The grounding wheel is formed in a cylindrical drum shape pivoted on a pair of left and right supports, and is provided with a ground slip prevention means on the outer peripheral surface of the cylindrical drum shape to be grounded , so that the vertical lifting position of the grounding wheel can be adjusted. At the same time, the resistance applying means is configured to operate by adjusting the grounding wheel to the lowest position .

According to a second aspect of the present invention, in the management machine according to the first aspect, the ground slip prevention means of the grounding wheel is constituted by an uneven body provided on a cylindrical drum-shaped grounding surface .

According to a third aspect of the present invention, in the management machine according to the first aspect, the ground slip prevention means of the ground wheel is formed by forming a cylindrical surface with a soft member on a ground surface of a cylindrical drum .

According to a fourth aspect of the present invention, in the management machine according to the first aspect, the ground slip prevention means of the ground wheel is configured by arranging a large number of spike bodies on a ground surface of a cylindrical drum shape .

  As effects of the present invention, the following effects can be obtained.

  Since it comprised like Claim 1, resistance can be provided to a wheel by a resistance provision means, and the rotation of the said wheel can be stopped. By grounding the wheel that is restrained during work, a resistance force against the traction force of the management machine can be generated, and the traveling speed and tillage depth of the management machine can be adjusted by the resistance force.

  In addition, compared to a management machine as described in Patent Document 1, the wheel can also function as a resistance rod, which is excellent in that the number of parts and cost can be reduced and the size can be reduced. Yes.

  Furthermore, by providing a landslide prevention means on the ground contact surface at the periphery of the wheel, the resistance force against the traction force of the management machine can be increased.

Moreover , it is not necessary to provide a structure for operating the resistance applying means in a separate configuration, and the operation can be performed only by adjusting the wheel to the lowest position during work.
That is, it is possible to use both the vertical position adjusting means and the resistance applying means operating means. Further, it is not necessary to actuate the resistance applying means by manual operation or the like.

Since it comprised like Claim 2, the resistance force with respect to the tractive force of a management machine can be increased with a simple structure.

Since it comprised like Claim 3, the resistance force with respect to the traction force of a management machine can be increased, without making a field scene rough.

According to the fourth aspect of the present invention, when the resistance applying means abuts against the spike body, the rotation of the wheel is surely stopped, and the spike body bites into the ground so that the resistance force against the traction force of the management machine can be increased. .

  Hereinafter, a management machine according to the present invention will be described with reference to the drawings.

  In the following, the direction of the arrow F in the figure is the front, and the front / rear and left / right directions are determined.

  The overall configuration of an axle work type management machine that is an embodiment of the management machine according to the present invention will be described with reference to FIGS. 1 to 3. An axle work type management machine is a management machine that attaches claws, a rotor, or the like to an axle and performs operations such as tillage, crushed soil, and scraping.

  As shown in FIG.1 and FIG.2, the management machine 1 is mainly comprised from the body frame 2, the engine 3, the tilling part 9, the handle frame 15, the wheel mechanism 40, etc. FIG.

  An engine 3 is mounted on the front portion of the body frame 2, and a fuel tank 4 is disposed above the engine 3. A bumper 5 is fixed to the front end of the body frame 2. A recoil starter 6 for starting the engine 3 is provided on the right side of the engine 3. A muffler 7 and a side transmission case 8 are disposed on the left side of the engine 3.

  The tilling unit 9 includes a mission case 10, an axle 11, a tilling claw 12, and a gauge wheel 13.

  The mission case 10 projects downward from the body frame 2, and an axle 11 projects from the lower end of the mission case 10 in the lateral direction of the body. In the middle of the axle 11, tilling claws 12, 12... Are fixed. In addition, gauge wheels 13 and 13 are fixed to the left and right ends of the axle 11 to improve the straightness of the management machine 1 during work.

  A handle frame base portion 14 is fixed to the rear portion of the body frame 2, and a handle frame 15 having a substantially A shape in plan view is extended from the handle frame base portion 14 toward the rear and upward. Handle grips 16 and 16 as gripping portions are provided at the rear end of the handle frame 15.

  An accelerator lever 17 is disposed in the vicinity of the handle grip 16 on the right rear end of the handle frame 15. By operating the accelerator lever 17, the rotational speed of the engine 3 can be adjusted. A clutch lever 18 is disposed below the handle grip 16 on the left side of the machine body so as to be rotatable in the vertical direction.

  As shown in FIG. 3, the side transmission case 8 includes a drive pulley 20, a driven pulley 21, a transmission belt 22, a tension pulley 23, a tension arm 24, and the like.

  An output shaft 19 projects from the left side of the engine 3 into the side transmission case 8, and the output shaft 19 is mounted on a drive pulley 20. A transmission belt 22 is wound between the driving pulley 20 and the driven pulley 21.

  A midway portion of the tension arm 24 is pivotally supported by the body frame 2. A tension pulley 23 is rotatably supported at one end of the tension arm 24, and one end of a clutch wire 25 is connected to the other end. The other end of the clutch wire 25 is connected to the clutch lever 18 (see FIGS. 1 and 2). When the clutch lever 18 is operated upward, the tension arm 24 rotates so as to press the tension pulley 23 against the transmission belt 22 via the clutch wire 25. As a result, the transmission belt 22 is tensioned, and power transmission between the drive pulley 20 and the driven pulley 21 becomes possible.

  The power of the engine 3 taken out by the output shaft 19 is transmitted to the driven pulley 21 via the drive pulley 20 and the transmission belt 22. The power transmitted to the driven pulley 21 is transmitted to the axle 11 via a transmission chain (not shown) in the mission case 10. The axle 11 is rotated by this power, and the tilling work can be performed by rotating the tilling claws 12, 12... Together with the axle 11.

  Next, the wheel mechanism 40 of the management machine according to the present invention will be described with reference to FIGS.

  The wheel mechanism 40 is mainly composed of a ground wheel support arm 41, a ground wheel 43, resistance applying means 50, and the like.

  The ground wheel support arms 41 and 41 that are a pair of left and right support bodies are parallel to each other, and are arranged behind the tillage portion 9 in a front height and a rear direction. The front upper ends of the grounding wheel support arms 41 and 41 are pivotally supported on the left and right sides of the body frame 2 by arm rotation shafts 42 fitted in the left and right directions at the rear ends of the body frame 2. Has been.

  A grounding wheel 43 is pivoted between the grounding wheel support arms 41 and 41 by a grounding wheel shaft 44 at the rear lower end of the grounding wheel support arms 41 and 41. The ground wheel 43 is a cylindrical drum-shaped wheel. The grounding wheel 43 has a flexible material pasted on the outer periphery, which is a surface to be grounded, having a large frictional resistance as a means for preventing slipping to the ground so as not to damage the field after plowing. Specifically, it is comprised with sponge, a foam material, rubber | gum, etc. In this embodiment, the ground wheel 43 has a structure in which a sponge roller 43a is covered. However, the present invention is not limited to this, and a rubber wheel or a synthetic resin wheel having the same shape may be used.

  Further, the anti-skid means can be configured to provide a concavo-convex body on the outer periphery of a cylindrical drum made of metal or a synthetic resin material. For example, the uneven body can be configured like a gear, and as shown in FIG. 5A, lugs 43b, 43b,. In this way, resistance to traction force is increased. Further, as shown in FIG. 5B, the anti-slip means can arrange a large number of truncated cone-shaped spike bodies 43 c, 43 c,. The spike bodies 43c, 43c,... Are arranged at regular intervals. The shape of the spike body 43c is not limited to a truncated cone shape, and may be a cylinder or a cone.

  The resistance applying means 50 also serves as a vertical position adjusting means for the grounding wheel 43, and is mainly provided on the link support frame 51, the brake / arm rotation adjusting / use link 53, the brake rod 54, and the grounding wheel support arm 41. It is composed of a brake rod notch long hole 55 and the like.

  A link support frame 51 is fixed to the lower end of the rear end of the body frame 2. The width in the left-right direction of the link support frame 51 is smaller than the width in the left-right direction of the airframe frame 2, and the link support frame 51 is disposed at the left-right center of the airframe frame 2.

  A link support shaft 52 is fitted in the link support frame 51 in the left-right direction. At both left and right ends of the link support shaft 52, one end side of the brake / arm rotation adjustment / use links 53, 53 is fixed so as to be orthogonal to the link support shaft 52. The brake / arm rotation adjustment / use links 53/53 are provided in parallel to each other, and the distance between the brake / arm rotation adjustment / use links 53/53 is smaller than the distance between the ground wheel support arms 41/41. That is, the brake / arm rotation adjusting and combining links 53 and 53 are provided to be rotatable between the ground wheel support arms 41 and 41 with the link support shaft 52 as a fulcrum.

  A brake rod 54 is fixed to the other end of the brake / arm rotation adjustment / use link 53/53 so as to be orthogonal to the brake / arm rotation adjustment / use link 53/53. The brake rod 54 has a length equal to or greater than the width between the ground wheel support arms 41 and 41, and both ends of the brake rod 54 are substantially U-shaped in a side view formed in the ground wheel support arms 41 and 41. The brake rod notch is inserted into the elongated holes 55 and 55. By changing the insertion position of the brake rod 54 into the brake rod notch elongated holes 55 and 55, the vertical rotation position of the ground wheel support arms 41 and 41 can be adjusted. That is, the vertical lift position of the ground wheel 43 can be adjusted.

  In the present embodiment, the link support shaft 52 is inserted into the link support frame 51 fixed to the lower end of the rear end of the machine body frame 2, but the present invention is not limited to this. For example, the link support shaft 52 may be directly fitted into the body frame 2 without using the link support frame 51. Further, although the brake rod notch elongated hole 55 is provided in the grounding wheel support arm 41 itself, it may be configured to be formed on a separate member such as a plate and fixed to the grounding wheel support arm 41.

  In this embodiment, one end side of the brake / arm rotation adjustment / use links 53, 53 is fixed to the left and right ends of the link support shaft 52, but the present invention is not limited to this. For example, the brake / arm rotation adjustment / use link 53 may be rotatably supported with respect to the link support shaft 52. In the present embodiment, the link support shaft 52 and the brake / arm rotation adjustment / use link 53 are configured as separate members, but the present invention is not limited to this. For example, each of the two round bar members is similarly bent into a substantially L shape, and one end thereof is fitted from the left and right sides of the link support frame 51, so that the link support shaft 52 and the brake / arm rotation adjustment link 53 may be integrated.

  In the present embodiment, the brake / arm rotation adjusting / combining link 53/53 is configured to rotate between the ground wheel support arms 41/41, but the present invention is not limited to this. It is good also as a structure which the link 53 * 53 for dynamic adjustment rotates in the left-right direction outer side of the fuselage wheel support arm 41 * 41. In this case, the brake / arm rotation adjustment combined links 53 and 53 and the brake rod 54 are fixedly provided on the outer side in the left-right direction of the grounding wheel support arms 41 and 41.

  A switching operation between the brake-on and the brake-off of the ground wheel 43 in the management machine 1 configured as described above will be described below with reference to FIGS. 1, 6, and 7.

  As shown in FIGS. 1 and 6A, a state in which the brake rod 54 is inserted into a brake-on position 55a, which is one lower end of the brake rod notch elongated hole 55, is referred to as a brake-on state.

  In the brake-on state, when the brake rod 54 is inserted into the brake-on position 55a of the brake rod notch elongated hole 55, the ground wheel support arm 41 cannot be rotated, and the ground wheel support arm 41 is positioned. In the brake-on state, the ground wheel 43 is located at the lowest position among the adjustable up and down positions. In the brake-on state, the brake rod 54 presses the outer peripheral surface of the ground wheel 43. As a result, resistance is imparted to the rotation of the ground wheel 43 to brake the rotation.

  When plowing work or the like is performed, the rotation of the ground wheel 43 is braked by setting the management machine 1 to the brake-on state. That is, when the grounding wheel 43 is adjusted to the lowest position, the resistance applying means 50 acts to brake the rotation of the grounding wheel 43. It is possible to generate a resistance force against the traction force of the management machine 1 by performing the work while the ground wheel 43 whose rotation is braked is grounded, and to adjust the traveling speed and the tilling depth of the management machine 1 by the resistance force. Become. That is, the ground wheel 43 can serve as a resistance rod used in a conventional management machine.

  Further, as shown in FIGS. 5A and 5B, by providing lugs 43b, 43b... On the outer peripheral surface of the grounding wheel 43, or by arranging spike bodies 43c, 43c. In addition, it is possible to increase the resistance force against the traction force of the management machine 1 generated when the ground wheel 43 whose rotation is braked in the brake-on state is grounded. Therefore, it is possible to reduce the force of the operator pressing the handle frame 15 downward during the work.

  Further, as shown in FIGS. 6B and 7, the brake rod 54 is slid from the brake-on position 55a to the brake-off position 55b in the brake rod notch long hole 55, so that the brake rod notch long hole 55 is The other end can be inserted into the brake-off position 55b. This state is called a brake-off state.

  In the brake-off state, the brake rod 54 is inserted into the brake-off position 55b of the brake rod notch elongated hole 55, so that the ground wheel support arm 41 cannot be rotated and the ground wheel support arm 41 is positioned. In the brake-off state, the ground wheel 43 is located at the uppermost position among the adjustable up and down positions. Further, in the brake off state, the brake rod 54 is separated from the outer peripheral surface of the ground wheel 43. As a result, the ground wheel 43 can rotate about the ground wheel shaft 44.

  When the management machine 1 is moved, the grounding wheel 43 can be rotated by putting the management machine 1 in a brake-off state. By moving the management machine 1 while grounding the grounding wheel 43 that can be turned, it is possible to easily move, and to improve operability and reduce operator fatigue. In addition, spring mounting stays 56 and 57 and a spring 58 are interposed between the ground wheel support arm 41 and the body frame 2 so that the ground wheel support arm 41 is counterclockwise when viewed from the left side with the arm rotation shaft 42 as an axis. Thus, the brake rod 54 can be reliably held at the brake-on position 55a and the brake-off position 55b (see FIG. 6). In this embodiment, the spring 58 is used. However, if the grounding wheel support arm 41 can be urged to rotate counterclockwise as viewed from the left side about the arm rotation shaft 42, an elastic material such as rubber can be used. A member may be used.

As described above, the management machine according to the present embodiment includes the grounding wheel 43 disposed behind the tiller 9 in the axle work type management machine 1, and is provided with resistance applying means 50 that applies resistance to the rotation of the grounding wheel 43. At the same time, the grounding wheel 43 is formed in the shape of a cylindrical drum that is pivotally mounted on the pair of left and right grounding wheel support arms 41, 41, and is provided with a ground slip prevention means on the outer peripheral surface to be grounded.
As a result, resistance can be imparted to the grounding wheel 43 by the resistance imparting means 50 and rotation of the grounding wheel 43 can be stopped. By grounding the grounding wheel 43 stopped during the work, a resistance force against the traction force of the management machine 1 can be generated, and the traveling speed and tilling depth of the management machine 1 can be adjusted by the resistance force. Further, since the grounding wheel 43 can function as a resistance rod, it is not necessary to separately provide a resistance rod, and the number of parts and cost can be reduced and the size can be reduced. Furthermore, by providing a ground slip prevention means on the ground contact surface at the periphery of the ground wheel 43, the resistance force against the traction force of the management machine 1 can be increased.

  In addition, the management machine according to the present embodiment is configured so that the vertical lifting position of the grounding wheel 43 can be adjusted, and the resistance applying means 50 acts when the grounding wheel 43 is adjusted to the lowest position. . Thus, it is not necessary to actuate the resistance applying means 50 by manual operation or the like, and it is possible to act by simply adjusting the grounding wheel 43 to the lowest position at the time of work, thereby improving operability and reducing operator fatigue. Can do.

  In the present embodiment, the roller 43a is affixed as a means for preventing the ground wheel 43 from slipping to the ground, but the present invention is not limited to this. For example, the grounding surface of the grounding wheel 43 may be provided with an uneven body, or the grounding surface may be formed in an uneven shape. Furthermore, the material of the anti-slip prevention means is not limited to the same material as that of the grounding wheel 43, and for example, a soft member different from the grounding wheel 43 and another member having a cylindrical surface formed thereon may be used. That is, the anti-skid means in the present invention may have any configuration that can sufficiently generate a resistance force against the traction force of the management machine 1 by grounding the ground wheel 43 whose rotation is braked in the brake-on state.

  In the present embodiment, the brake rod notch elongated hole 55 is substantially U-shaped when viewed from the side. However, the present invention is not limited to this, and for example, the ground wheel is formed in a generally yo-shaped shape when viewed from the side. It is also possible to increase the number of steps in which the vertical position of 43 can be adjusted. That is, the brake rod notch elongated hole 55 can adjust the vertical movement position of the ground wheel 43, and when the ground wheel 43 is adjusted to the lowest position, the resistance applying means 50 acts to brake the rotation of the ground wheel 43. Any shape can be used.

The whole side view which showed the whole structure of the management machine which concerns on one Example of this invention. Similarly the whole top view. Similarly an enlarged side view. The rear view which showed the wheel mechanism. (A) The perspective view which showed the other Example of the anti-slip | slip prevention means, (b) The perspective view which showed the other Example of the anti-slip prevention means. (A) The enlarged side view which showed the wheel mechanism of a brake-on state, (b) The enlarged side view which showed the wheel mechanism of a brake-off state. The whole side view which showed the management machine of a brake-off state.

1 management machine 9 tillage part 40 wheel mechanism 41 grounding wheel support arm (support)
43 Ground wheel
43a Roller (land slip prevention means)
50 Resistance imparting means

Claims (4)

In the axle working type tiller fixedly provided a tilling unit to the axle, together with placing the ground wheels behind the tilling unit, provided with resistance application means for applying a resistance to the rotation of the ground wheel, the ground wheels pair A cylindrical drum shape that is pivotally mounted on the support body of the vehicle is provided, and a ground slip prevention means is provided on the outer peripheral surface of the cylindrical drum shape to be grounded so that the vertical lift position of the ground wheel can be adjusted. A management machine characterized in that the resistance applying means acts by adjusting to the lowest position . 2. The management machine according to claim 1, wherein the ground slip prevention means of the grounding wheel is constituted by an uneven body provided on a cylindrical drum-shaped grounding surface . 2. The management machine according to claim 1, wherein the ground slip prevention means of the grounding wheel has a cylindrical surface formed of a soft member on a grounding surface of a cylindrical drum shape . 2. The management machine according to claim 1, wherein the ground slip prevention means of the ground wheel is configured by arranging a large number of spike bodies on a ground surface of a cylindrical drum shape .

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