JP6827375B2 - Balance weight - Google Patents

Description

The present invention relates to a balance weight that is attached to the front end of a walking work machine and used.

As a balance weight of this kind, for example, the technique described in Patent Document 1 is already known.
In the structure described in this document, a convex portion protruding upward is formed on the upper edge of the balance weight having a handle hole long in the left-right direction, and a rope having a width narrower in the left-right direction than the handle hole is formed in the convex portion. A hanging hole is formed.

Japanese Unexamined Patent Publication No. 2012-196169 (see paragraph number "0016", FIGS. 1 and 2)

As described above, the balance weight can be used as a rope hook by forming the rope hook hole in the convex portion of the balance weight. By making the rope hook hole narrower in the left-right direction than the handle hole, it is useful in that it is easy to prevent the rope hung in the rope hook hole from being largely displaced in the left-right direction of the machine body.
However, in this structure, the work of hanging and removing the rope from the rope hook hole having a narrow width in the left-right direction is relatively troublesome. In addition, it is necessary to form a large convex portion by forming a rope hook hole to reduce the weight of the weight, which makes the balance weight bulky for the weight and increases the volume for storage and transportation. There's a problem.

INDUSTRIAL APPLICABILITY In the present invention, when the balance weight is used as a rope hook, it is easy to hang and remove the rope, and it is easy to avoid increasing the size of the balance weight itself.

Balance weight according to the present invention is a balance weight attached to the front of the walk-behind working machine, a front wall portion, and a hook portion extending toward the rear from the front wall, is provided, wherein A central recess in the left-right direction of the upper edge of the front wall is provided, which is lower than the upper edges on both the left and right sides.
The hook portion is a rear extending portion extending rearward from the front wall portion on the back side of the front wall portion, and a downward extending portion extending downward from the rear end portion of the rear extending portion. With a department,
The hook portion is opened on the upper side space of the hook portion, the hook portion is exposed to the upper side, and the hook portion overlaps with the portion where the central recess exists in the left-right direction on the center line in the left-right direction of the traveling machine body. It is characterized in that it is provided .

According to the present invention, since the hook portion extending rearward from the front wall portion is provided, the balance weight can be used as a rope hook.
The hook portion extending rearward from the front wall portion is provided so that the space on the upper side of the hook portion is opened and the hook portion is exposed on the upper side. For this reason, the rope can be quickly hooked and unhooked from the front side of the front wall of the balance weight by an extremely simple operation of hooking or removing the rope from the front side of the balance weight over the front wall to the hook. it can.

Further, the object to which the rope is hooked is a hook portion extending rearward from the front wall portion, which increases the weight of the balance weight to some extent and does not decrease it. Therefore, it is possible to avoid a tendency that the balance weight of a predetermined weight becomes bulky as compared with the case where the rope hooking hole is formed for hooking.

Further, according to the present invention, the hook portion is provided with a rear extension portion and a downward extension portion when the rope is hooked on the hook portion from the front side of the front wall portion to the upper side of the front wall portion. Therefore, it is easier to more reliably maintain the locked state of the rope with respect to the hook portion.
Then, according to the present invention, the rope hooked on the hook portion is restricted from moving laterally outward in the left-right direction by the central recess provided in the upper edge portion of the front wall portion.
Therefore, the rope hooked on the hook portion is restricted from moving to the laterally outward side by the central recess, and is also restricted from moving to the laterally inward side in the left-right direction by the hook portion.
In this way, by providing the hook portion at the position overlapping the central recess in the left-right direction, the rope can be more reliably exerted by synergistically exerting the action of restricting the movement of the central recess and the hook portion in and out of the rope. It is easy to limit the movement of the rope in the left-right direction.

In the present invention, it is preferable that the hook portion is formed so that the width in the left-right direction is substantially the same from the upper end side to the lower end side.

According to the present invention, it is easier to hook the rope on the hook portion from the front side of the front wall portion to the upper side of the front wall portion. That is, if, for example, the lower extension portion of the hook portion is wider than the rear extension portion, is the lower part of the rope hooked on the wide downward extension portion by looking from the front side of the front wall portion? It is necessary to work while confirming whether or not. However, if the width of the hook portion in the left-right direction is substantially the same from the upper end side to the lower end side, the hook portion can be hooked without worrying about the width of the downward extending portion, and a simple operation can be easily performed.

In the present invention, side wall portions extending rearward are formed on both left and right side portions of the front wall portion, and the hook portion is front and both lateral sides by the front wall portion and the left and right side wall portions. It is preferable that the one is enclosed.

According to the present invention, the front wall portion and the left and right side wall portions surround the front surface and both lateral sides of the hook portion, making it difficult for the vicinity of the hook portion to touch other objects. As a result, there is little possibility that the rope hooked on the hook portion will come off or be displaced due to contact with another object.

It is a left side view which shows the walking type management machine which applied the balance weight in this invention. It is a top view which shows the walking type management machine which applied the balance weight in this invention. It is a front view which shows the balance weight. It is a vertical sectional view which shows the balance weight in the side view. It is a perspective view which shows the balance weight. It is a front view which shows the balance weight in another embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Unless otherwise specified, the front-rear direction and the left-right direction in the description of the present embodiment are described as follows. That is, when the walking type management machine to which the present invention is applied, the traveling direction on the forward side (see arrow F in FIGS. 1 and 2) is "forward" and the traveling direction on the backward side (arrow B in FIGS. 1 and 2). (See) is "rear", the direction corresponding to the right side with respect to the forward-looking posture in the front-back direction (see arrow R in FIG. 2) is "right", and similarly the direction corresponding to the left side (see arrow L in FIG. 2). ) Is "left".

[Overall configuration of walking management machine]
As shown in FIGS. 1 and 2, the walking management machine includes an engine 1 as a drive source, a mission case 2 to which the power of the engine 1 is input, wheels 3 which is an example of a traveling device, and rotary tillage. It includes a device 4 and a steering handle 5 that extends rearward.

The mission case 2 is formed in a bifurcated shape including a front case 2A extending downward and a rear case 2B extending diagonally rearward and downward. The drive shaft 21 extends to the left and right from the lower part of the front case 2A, and the left and right wheels 3 are mounted on the left and right ends of the drive shaft 21. A rotating shaft 22 extends left and right from the lower part of the rear case 2B, and a plurality of tilling claws 40 are attached to the rotating shaft 22 to form a rotary tilling device 4.

The engine frame 20 extends forward from the front end portion of the front case 2A constituting the mission case 2. The engine 1 is mounted on the engine frame 20, and the upper side of the engine 1 is covered with an engine cover 10.
The engine frame 20 is bolted to the front portion of the mission case 2 and integrated with the mission case 2, and constitutes a traveling machine together with the mission case 2.
The engine 1 and the mission case 2 are interlocked and connected via a belt transmission mechanism 11.
By operating the tension clutch lever 12 provided on the steering handle 5, the belt transmission mechanism 11 can perform a disconnection / connection operation of the transmission power from the engine 1 to the gear transmission mechanism in the transmission case 2.

The main speed change lever 13 extends diagonally rearward and upward from the upper part of the mission case 2. By operating the main speed change lever 13, the wheel 3 shift operation and forward / reverse operation, and the rotary tillage device 4 forward / reverse You can perform operations.

At least the upper half of the rotary tiller 4 is covered with the rotary cover 41 from above and outside. The rotary cover 41 is fixed to both sides of the rear case 2B of the mission case 2 at an intermediate position between the front and rear.
At the center of the rear end of the rotary cover 41, a square pipe-shaped boss portion 42 that is open vertically is formed. A strip-shaped resistance rod 43 that is long in the vertical direction is inserted into the boss portion 42, and is attached so that the vertical position can be adjusted. The tillage depth of the tillage claw 40 can be set by adjusting the vertical position of the resistance rod 43 with respect to the boss portion 42.

A steering handle 5 is provided from the upper part of the rear case 2B of the mission case 2 diagonally rearward and upward. The steering handle 5 is attached so as to be vertically adjustable around the axis in the left-right direction with respect to the upper part of the rear case 2B. A work clutch lever 14 and a stop switch 15 are arranged on the right side of the steering handle 5, and a tension clutch lever 12 is arranged on the rear end side of the steering handle 5 so as to be able to swing up and down. The work clutch lever 14 is for connecting and disconnecting a clutch (not shown) for the rotary tillage device 4 provided in the transmission case 2, and is a clutch operation arm arranged on the upper part of the mission case 2. It is linked to (not shown). The stop switch 15 is wired to the control system of the engine 1 for the stop operation of the engine 1.

[Balance weight]
A balance weight 6 is provided at the front end of the engine frame 20.
As shown in FIGS. 2 and 3, the balance weight 6 is bolted to the front end portion of the engine frame 20 in a state of being located on the center line CL in the left-right direction of the traveling machine body.
In the mounted state with respect to the engine frame 20, the front end portion of the balance weight 6 projects forward from the front end of the engine frame 20 as shown in FIG. 1, and also serves as a front guard of the traveling machine body.

As shown in FIGS. 3 to 5, the balance weight 6 includes a front wall portion 60 that stands up on the front side and side wall portions 61 and 61 extending rearward on both left and right side portions of the front wall portion 60. A bottom wall portion 62 integrally formed so as to connect the front wall portion 60 and the bottom side of the left and right side wall portions 61, 61 is provided.
Through holes 62a are formed at three locations in the middle portion in the left-right direction of the bottom wall portion 62, and connecting bolts 62b are inserted into the through holes 62a to be connected and fixed to the engine frame 20.

As shown in FIGS. 3 and 5, a concave groove portion 63 is formed on the lower surface side of the bottom wall portion 62, and the concave groove portion 63 is fixed so as to straddle the engine frame 20. In this structure, the horizontal width of the concave groove portion 63 is formed wider than the horizontal width of the engine frame 20, and the engine frame 20 is fixed in a state of being biased to one side of the concave groove portion 63. However, the engine frame 20 may be fixed in a state where the center in the left-right direction and the center in the left-right direction of the concave groove portion 63 match. Further, the width in the left-right direction of the concave groove portion 63 may be configured to be the same as the width in the left-right direction of the engine frame 20.

The front wall portion 60 is formed with a handle hole 64 penetrating in the front-rear direction on the lower side. The size of the handle hole 64 is a size that allows an operator to insert a hand so as to be convenient when operating the front side of the traveling machine body in the lifting direction. Specifically, the width in the left-right direction is set to a width that is at least enough to hang four fingers except the thumb.

[Hook part]
As shown in FIGS. 3 to 5, hook portions 65 for hanging ropes are provided on the back side of the front wall portion 60.
The hook portion 65 includes a rear extending portion 65A extending rearward from the front wall portion 60 and a downward extending portion 65B extending downward from the rear end portion of the rear extending portion 65A. I have.
At the location where the hook portion 65 exists, as shown in FIGS. 1 and 2, a space corresponding to the upper side of the balance weight 6 is open, and the hook portion 65 is exposed when viewed from above.

As shown in FIG. 3, the hook portion 65 is formed so that the width w1 in the left-right direction is substantially the same from the upper end side to the lower end side. Then, the balance weight 6 is attached to the engine frame 20 in a state where the center position of the width w1 in the left-right direction is located on the center line CL in the left-right direction of the traveling machine body. Therefore, by hanging the rope 7 on the hook portion 65, the center position of the traveling machine body in the left-right direction can be pulled.

The central portion of the upper edge portion 60a of the front wall portion 60 in the left-right direction is provided with a central recess 66 configured to be lower than the upper edge portions 60a and 60a on both the left and right sides. The left-right width w2 of the central recess 66 is formed wider than the left-right width w1 of the hook portion 65, and the hook portion 65 is provided in a state of being located within the left-right width w2 of the central recess 66. ing. That is, the hook portion 65 is provided at a portion overlapping the portion where the central recess 66 exists in the left-right direction.

Therefore, the rope 7 wound around the hook portion 65 is towed in a state of being located in the central recess 66 as shown by virtual lines in FIGS. 4 and 5.
As a result, the lateral movement of the rope 7 wound around the hook portion 65 in the left-right direction is more reliably restricted by the cooperation between the hook portion 65 itself and the central recess 66.

Further, side wall portions 61, 61 extending rearward are provided on both left and right side portions of the front wall portion 60. That is, the hook portion 65 includes the front wall portion 60 and the side wall portions 61 and 61 on both the left and right sides.
It is located in a space surrounded by the front and both left and right sides.
Therefore, there is little possibility that the rope 7 hooked on the hook portion 65 comes into contact with another object, and there is little possibility that the rope 7 will come off or be displaced due to contact with another object.

[1 of another embodiment]
In the embodiment, the hook portion 65 has a structure including both the rear extending portion 65A and the downward extending portion 65B, but the hook portion 65 is not limited to this structure.
For example, the structure may include only the rear extending portion 65A. Further, the shape of the rear extending portion 65A may be appropriately changed, such as a corrugated plate-like shape that prevents the rope 7 from coming off.
As for other configurations, the same configurations as those in the above-described embodiment may be adopted.

[2 of another embodiment]
In the embodiment, a structure in which the width w1 in the left-right direction of the hook portion 65 is formed to have substantially the same width from the upper end side to the lower end side is illustrated, but the structure is not limited to this.
For example, the width w1 in the left-right direction of the hook portion 65 may have a tapered shape whose lower end side is narrower than the upper end side, or a tapered shape whose lower end side is wider than the upper end side.
As for other configurations, the same configurations as those in the above-described embodiment may be adopted.

[3 of another embodiment]
In the embodiment, a structure in which the left-right width w2 of the central recess 66 is formed wider than the left-right width w1 of the hook portion 65 so that the hook portion 65 and the central recess 66 overlap in the left-right direction is exemplified. However, it is not limited to this structure.
For example, the left-right width w1 of the hook portion 65 and the left-right width w2 of the central recess 66 are substantially the same in the left-right direction, or the left-right width w1 of the hook portion 65 is wider than the left-right width w2 of the central recess 66. It may have a structure such as wide.
Further, the central recess 66 is not limited to one, and a plurality of central recesses 66 may be formed. In this case, the width of each of the plurality of central recesses 66 in the left-right direction needs to be greater than or equal to the thickness of the rope 7.
For other configurations, the same configurations as those in the above-described embodiment may be adopted.

[4 of another embodiment]
In the embodiment, a structure in which the heights of the left and right side wall portions 61 and 61 are different has been exemplified, but the structure is not limited to this structure. For example, as shown in FIG. 6, the heights of the left and right side wall portions 61, 61 may be formed to be the same or substantially the same, and the shape thereof can be changed as appropriate.
Further, the positions of the hook portion 65 and the central recess 66 are preferably on the center line CL in the left-right direction of the traveling machine, but are not necessarily on the center line CL and are slightly displaced to the left and right. It does not matter even if it is used in.
As for other configurations, the same configurations as those in the above-described embodiment may be adopted.

The balance weight of the present invention can be used not only for a walking type management machine, but also for a rice transplanter, a vegetable transplanter, a tractor, and other working machines.

6 Balance weight 60 Front wall part 61 Side wall part 65 Hook part 65A Rear extension part 65B Downward extension part 66 Central recess w1 Left-right width

Claims (3)

A balance weight that can be attached to the front of a walking work machine.
A front wall portion and a hook portion extending rearward from the front wall portion are provided.
The central portion of the upper edge portion of the front wall portion in the left-right direction is provided with a central recess formed lower than the upper edge portions on both the left and right sides.
The hook portion is a rear extending portion extending rearward from the front wall portion on the back side of the front wall portion, and a downward extending portion extending downward from the rear end portion of the rear extending portion. With a department,
The space on the upper side of the hook portion is opened, and the hook portion is exposed on the upper side.
A balance weight in which the hook portion is provided on the center line in the left-right direction of the traveling machine body at a portion overlapping the portion where the central recess exists in the left-right direction . The balance weight according to claim 1 , wherein the hook portion has a width in the left-right direction substantially the same from the upper end side to the lower end side. Side wall portions extending rearward are formed on both the left and right sides of the front wall portion.
The balance weight according to claim 1 or 2, wherein the hook portion is surrounded by the front wall portion and the left and right side wall portions on the front side and both lateral sides.

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