JP2019004818A - Balance weight - Google Patents

Abstract

To facilitate a work of hooking and removing a rope and avoiding an increase in size of a balance weight itself, in using a balance weight as a rope hooking tool.SOLUTION: A balance weight mounted in a front part of a walking type work machine includes: a front wall part 60; and a hook part 65 extending backward from the front wall part 60. The hook part 65 has an upper-side space that is opened. The hook part 65 is exposed on an upper side.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a balance weight used by being attached to a front end portion of a walking work machine.

As this type of balance weight, 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 portion of the balance weight having a handle hole that is long in the left-right direction, and the rope having a narrower width in the left-right direction than the handle hole is formed on the convex portion. A hanging hole is formed.

JP 2012-196169 A (see paragraph number “0016”, FIG. 1 and FIG. 2)

As described above, the balance weight can be used as a rope hook by forming the rope hooking hole in the convex portion of the balance weight. The rope hooking hole is narrower in the left-right direction than the handle hole, which is useful in that it is easy to avoid the position of the rope hung on the rope hooking hole from being greatly displaced in the left-right direction of the machine body.
However, with this structure, the work of detaching the rope from the rope hooking hole having a narrow lateral width is relatively troublesome. Also, it is necessary to form a rope hooking hole to make the convex part larger by the amount that the weight of the weight is reduced, and the balance weight becomes bulky for the weight, and the volume for storage and transportation increases. There's a problem.

  In the present invention, when the balance weight is used as a rope hanger, the rope is easily detached and the enlargement of the balance weight itself is easily avoided.

  A balance weight according to the present invention is a balance weight attached to a front portion of a walking work machine, and includes a front wall portion and a hook portion extending rearward from the front wall portion, The upper space of the hook portion is opened, and the hook portion is exposed upward.

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 hanging tool.
And the hook part extended toward the back from the front wall part is opened so that the upper space of the hook part is opened and the hook part is exposed to the upper side. For this reason, it is possible to quickly hang the rope with respect to the hook portion by a very simple operation of hooking or removing the rope from the front side of the front wall portion of the balance weight over the front wall portion to the hook portion. it can.

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

  In the present invention, the hook portion extends rearward from the front wall portion on the back side of the front wall portion, and downward from the rear end portion of the rear extension portion. It is preferable that a downwardly extending portion is provided.

  According to the present invention, when hooking the rope to the hook portion from the front side of the front wall portion to the upper side of the front wall portion, the hook portion includes a rearward extension portion and a downward extension portion, It is easy to maintain the locked state of the rope with respect to the hook portion more reliably.

  In the present invention, it is preferable that the hook portion has a lateral width that is substantially the same from the upper end side to the lower end side.

  According to the present invention, the operation of hooking the rope on the hook portion from the front side of the front wall portion to the upper side of the front wall portion can be performed more easily. In other words, if the lower extension part of the hook part is wider than the rear extension part, for example, is the peeking from the front side of the front wall part, and is the lower part of the rope hooked by the wide downward extension part? It is necessary to work while checking whether or not. However, if the horizontal width of the hook portion 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 extension portion, and a simple operation is easy to perform.

  In the present invention, the central portion in the left-right direction at the upper edge portion of the front wall portion is provided with a central recess configured to be lower than the upper edge portions on the left and right sides, and the central recess portion exists in the left-right direction It is preferable that the hook portion is provided at a location overlapping with the above.

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 on the upper edge portion of the front wall portion.
Accordingly, the rope hooked on the hook portion is restricted from moving laterally outward by the central recess, and is also restricted from moving laterally inward in the left-right direction by the hook portion.
In this way, the hook portion is provided in the left-right direction so as to overlap with the central concave portion, so that the movement of the central concave portion and the hook portion to the inside and outside of the rope can be synergistically exhibited, and the rope can be more reliably secured. It is easy to limit the movement in the left-right direction.

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

  According to the present invention, the front wall portion and the left and right side wall portions surround the front and both lateral sides of the hook portion, so that the vicinity of the hook portion is difficult to touch other objects. Thereby, there is little possibility that the rope hooked on the hook part may come off or be displaced due to contact with other objects.

It is a left view which shows the walk type management machine to which the balance weight in this invention is applied. It is a top view which shows the walk type management machine to which the balance weight in this invention is applied. It is a front view which shows a balance weight. It is an up-down direction sectional view in a side view showing a balance weight. It is a perspective view which shows a 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.
In the description of the present embodiment, the front-rear direction and the left-right direction are described as follows unless otherwise specified. That is, the forward traveling direction (see arrow F in FIGS. 1 and 2) of the walking type management machine to which the present invention is applied is “front” and the backward traveling direction (arrow B in FIGS. 1 and 2). (Refer to the arrow R in FIG. 2) and the direction corresponding to the left side (see arrow L in FIG. 2). ) Is “left”.

[Overall configuration of walking-type 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 power of the engine 1 is input, a wheel 3 as an example of a traveling device, and rotary tillage. The apparatus 4 and the steering handle 5 extended toward back are provided.

  The mission case 2 has a bifurcated shape including a front case 2A extending downward and a rear case 2B extending obliquely rearward and downward. A drive shaft 21 extends left and right from the lower part of the front case 2 </ b> A, and left and right wheels 3 are mounted on both left and right ends of the drive shaft 21. A rotary shaft 22 extends from the lower part of the rear case 2B to the left and right, and a plurality of tilling claws 40 are attached to the rotary shaft 22 to constitute the rotary tiller 4.

An engine frame 20 extends forward from the front end portion of the front case 2 </ b> A 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 transmission case 2 and integrated with the transmission case 2, and constitutes a traveling machine body together with the transmission case 2.
The engine 1 and the transmission case 2 are interlocked and connected via a belt transmission mechanism 11. The belt transmission mechanism 11 can connect / disconnect transmission power from the engine 1 to the gear transmission mechanism in the transmission case 2 by operating a tension clutch lever 12 provided on the steering handle 5.

  A main speed change lever 13 extends obliquely rearward and upward from the upper part of the mission case 2, and by operating the main speed change lever 13, the speed change operation and forward / reverse operation of the wheel 3 and the forward / reverse rotation of the rotary tiller 4 are performed. The operation can be performed.

At least the upper half of the rotary tiller 4 is covered with a rotary cover 41 from above and outside. The rotary cover 41 is fixed to both side portions at the front and rear intermediate positions of the rear case 2B of the mission case 2.
At the center of the rear end portion of the rotary cover 41, a boss portion 42 having a square pipe shape that opens upward and downward is formed. A long strip-like resistor rod 43 is inserted into the boss portion 42 so as to be vertically adjustable. The tilling depth of the tilling claw 40 can be set by adjusting the vertical position of the resistance bar 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 toward the obliquely rearward and upward direction. The steering handle 5 is attached to the upper part of the rear case 2B so that the vertical position can be adjusted around the axis in the left-right direction. A work clutch lever 14 and a stop switch 15 are disposed on the right side of the steering handle 5, and a tension clutch lever 12 is disposed on the rear end side of the steering handle 5 so as to be swingable up and down. The work clutch lever 14 is for connecting / disconnecting a clutch (not shown) for the rotary tiller 4 provided in the mission case 2, and a clutch operating arm disposed on the top of the mission case 2. (Not shown). The stop switch 15 is wired to the control system of the engine 1 for stopping 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 while being positioned on the center line CL in the left-right direction of the traveling machine body.
In the attached 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 for the traveling machine body.

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

  A recessed groove portion 63 is formed on the lower surface side of the bottom wall portion 62 as shown in FIGS. 3 and 5, and the recessed groove portion 63 is fixed in a state of straddling the engine frame 20. In this structure, the width in the left-right direction of the recessed groove portion 63 is formed wider than the width in the left-right direction of the engine frame 20, and the engine frame 20 is fixed in a state of being biased toward one side of the recessed groove portion 63. Not limited to this, the center of the engine frame 20 in the left-right direction and the center of the groove 63 in the left-right direction may be fixed. Further, the lateral width of the recessed groove portion 63 may be configured to be the same as the lateral width of the engine frame 20.

  A handle hole 64 penetrating in the front-rear direction is formed in the front wall portion 60 on the lower side. The size of the handle hole 64 is such that the operator can insert his / her 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 excluding the thumb.

[Hook part]
As shown in FIGS. 3 to 5, a hook portion 65 for hooking a rope is 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.
As shown in FIGS. 1 and 2, the space corresponding to the upper side of the balance weight 6 is open at the location where the hook portion 65 exists, and the hook portion 65 is exposed when viewed from above.

  As shown in FIG. 3, the hook portion 65 has a lateral width w <b> 1 that is substantially the same width from the upper end side to the lower end side. The balance weight 6 is attached to the engine frame 20 with the center position of the lateral width w1 positioned on the lateral center line CL of the traveling machine body. Therefore, the center position in the left-right direction of the traveling machine body can be pulled by hanging the rope 7 on the hook portion 65.

  A central recess 66 configured lower than the upper edge portions 60a, 60a on both the left and right sides is provided at the center portion in the left-right direction of the upper edge portion 60a of the front wall portion 60. The central recessed portion 66 has a lateral width w2 that is wider than the lateral width w1 of the hook portion 65, and the hook portion 65 is provided so as to be positioned within the lateral width w2 of the central recessed portion 66. ing. That is, the hook portion 65 is provided at a location overlapping the location where the central recess 66 exists in the left-right direction.

Therefore, the rope 7 wound around the hook portion 65 is pulled in a state where the rope 7 is positioned in the central recess 66 as indicated by phantom lines in FIGS. 4 and 5.
As a result, the lateral movement of the rope 7 wound around the hook portion 65 is more reliably limited by the cooperation of 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 is located in a space surrounded by the front wall portion 60 and the left and right side wall portions 61 and 61 on both the front and left and right sides.
For this reason, there is little possibility that the rope 7 hooked on the hook part 65 will come into contact with another object, and there is little possibility that the rope 7 will come off or be displaced due to contact with the other object.

[Other Embodiment 1]
In the embodiment, the hook portion 65 has a structure including both the rear extension portion 65A and the lower extension portion 65B. However, the hook portion 65 is not limited to this structure.
For example, the structure provided only with 65 A of back extension parts may be sufficient. Further, the shape of the rear extending portion 65A may be appropriately changed, for example, such that the shape of the corrugated rope 7 is difficult to come off.
Other configurations may be the same as those in the above-described embodiment.

[Second embodiment]
In the embodiment, the structure in which the horizontal width w1 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 present invention is not limited to this structure.
For example, the horizontal width w1 of the hook portion 65 may be a tapered shape having a narrower width on the lower end side than the upper end side, or a tapered shape having a wider lower end side than the upper end side.
Other configurations may be the same as those in the above-described embodiment.

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

[4 of another embodiment]
In the embodiment, the structure in which the left and right side wall portions 61 and 61 have different heights is exemplified, but the present invention is not limited to this structure. For example, as shown in FIG. 6, the left and right side wall portions 61, 61 may be formed to have the same or substantially the same height, and the shape thereof can be changed as appropriate.
Further, the position of the hook portion 65 and the central recess 66 is preferably on the center line CL in the left-right direction of the traveling machine body, but is not necessarily on the center line CL, and is slightly displaced from side to side. It can be used in the above.
Other configurations may be the same as those in the above-described embodiment.

  The balance weight of the present invention can be used for a rice transplanter, a vegetable transplanter, a tractor, and other work machines, in addition to a walking type management machine.

6 Balance weight 60 Front wall part 61 Side wall part 65 Hook part 65A Backward extension part 65B Downward extension part 66 Central recessed part w1 Width in the left-right direction

Claims (5)

A balance weight attached to the front of a walking work machine,
A front wall portion and a hook portion extending rearward from the front wall portion,
A balance weight in which an upper space of the hook portion is opened and the hook portion is exposed upward.   The hook portion extends rearward from the front wall portion on the back side of the front wall portion, and extends downward from a rear end portion of the rear extension portion. The balance weight according to claim 1, further comprising: a portion.   The balance weight according to claim 1 or 2, wherein the hook portion is formed to have substantially the same width in the left-right direction from the upper end side to the lower end side. The central portion in the left-right direction in the upper edge portion of the front wall portion is provided with a central recess configured to be lower than the upper edge portions on the left and right sides,
The balance weight as described in any one of Claims 1-3 with which the said hook part is provided in the location which overlaps with the location where the said center recessed part exists in the left-right direction. Side wall portions extending rearward are formed on the left and right side portions of the front wall portion,
The balance weight according to any one of claims 1 to 4, wherein the hook portion is surrounded on the front and both lateral sides by the front wall portion and the left and right side wall portions.

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