JPH07257448A - Crawler type running device for mowing machine - Google Patents

Abstract

PURPOSE:To perform mowing work improved in a work land of skiing ground and riverbed or expressway side belt and the like by applying a crawler type running device, considering a countermeasure capable of suppressing a running machine unit from its slipping, tumbling, etc., to a mowing machine. CONSTITUTION:A shoe plate 5a in a crawler type running device of a mowing machine is mountably/demountably connected with a spike metal fitting 21 comprising a connection plate part 21A protruded toward the outer sideward from a side end of the shoe plate 5a and a protrusive part 21B protruded toward the outward from an external surface of this connection plate part 21A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crawler type traveling device for a mowing machine for mowing work in a ski resort, a riverbed, or a roadside belt of a highway.

[0002]

2. Description of the Related Art Conventionally, a general rubber crawler has been adopted in the crawler type traveling device of the above-mentioned mower.

[0003]

[Problems to be Solved by the Invention] In a ski resort, a riverbed, or a roadside belt of a highway, which is considered to be a work site for a mower, the undulations may be serious and may cause a risk of skidding or overturning of the vehicle. In many cases, a wireless control type is used to enable safe mowing work.However, as a crawler type traveling device for a mower, it is still necessary to take measures to prevent side slipping or falling of the traveling machine body. Since the above-mentioned conventional technique that has not been taken is adopted, it becomes difficult to mow the grass on a sloping ground due to the skid or overturning of the traveling machine body. In particular,
Mowing work is done only once every few years, such as on the side of highways, and even when weeding only once every few years, weeds are not collected and humus that has no grip is accumulated. In a work area like this, the skid of the traveling machine becomes noticeable on sloping ground, and slipping occurs on the traveling machine even when mowing grass that is tall and has high running resistance on flat ground so that the thrust is reduced. It became difficult to mow the grass.

It is an object of the present invention to employ a crawler type traveling device, which is provided with measures for suppressing slipping and overturning of the traveling body, as a mower to be used in a skiing area, a riverbed or a roadside area of a highway. It is to be able to perform good mowing work.

[0005]

In order to achieve the above object, according to the present invention, a shoe plate is provided with a connecting plate portion projecting outward from a side end of the shoe plate.
A crawler type traveling device for a mower was constructed by detachably connecting spike metal fittings consisting of a protruding portion protruding outward from the outer surface of the connecting plate portion.

[0006]

According to the present invention, in mowing work, the protrusion of the spike fitting cuts into the traveling road surface of the work site to suppress the slip of the traveling machine body, so that the thrust of the traveling machine body can be improved. At the same time, it becomes possible to run a contour line on a sloping land where the road surface condition is poor, where mulch without grip is accumulated. Further, since the falling angle of the traveling machine body can be increased by the connecting plate portion of the spike fitting, it is possible to suppress the traveling machine body from falling as much as possible.
Besides, since the spike metal fittings are detachably connected,
The spike metal fittings can be easily replaced.

[0007]

As described above, according to the present invention, the thrust of the traveling machine body is improved and the contour traveling is possible, so that the traveling machine body can be easily maneuvered in a work place where the road surface condition is poor. Since the interruption of the work due to the fall of the traveling body is also reduced, it becomes possible to efficiently and satisfactorily perform the mowing work in the work area such as the ski resort, the riverbed or the roadside belt of the expressway. In addition, it has become possible to avoid damage to the traveling machine body due to a fall at a work place with a steep slope or a work place with a lot of ups and downs. In addition, since the spike metal fittings can be easily replaced due to wear or damage, it is possible to make a great advantage in terms of maintenance. Moreover, by preparing various kinds of spike metal fittings (having different protruding lengths of the connecting plate portion and the protruding portion), the spike metal fittings can be replaced with suitable ones according to the situation of the work site. , It has become possible to perform better mowing work more efficiently according to the situation at any work site.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a wireless remote control type mower will be described below with reference to the drawings. As shown in FIG. 1, this mower has a link mechanism 2 at a front portion of a traveling body 1.
A mower 4 of the Freur-Moor type, which is an example of a mowing work device that is hung and supported so that it can be raised and lowered and rolled freely via a lift arm 3, and a pair of left and right crawler type traveling devices provided in the traveling machine body 1. 5, an engine 6 mounted on the rear part of the traveling vehicle body 1, a control device 7 arranged on the right front side of the engine 6, and the like. The left and right crawler type traveling devices 5 are configured to be hydraulically driven and run by the hydrostatic stepless transmission 8, respectively, and the rotation drive, the elevation drive, and the rolling drive of the mower 4 are all hydraulic. Is configured to be done.

The structure of the hydraulic circuit will be described with reference to FIG. 2. A lift cylinder 9 for vertically moving the mower 4.
And a first hydraulic pump P1 for driving a rolling cylinder 10 for rolling the mower 4, a pair of variable displacement hydraulic pumps P2, P3 for respectively driving the left and right crawler type traveling devices 5, and a mower. Each of the second hydraulic pumps P4 for rotationally driving 4 is configured to be driven by the output shaft 6a of the engine 6. The pair of variable displacement hydraulic pumps P2 and P3 and the second hydraulic pump P4 with respect to the first hydraulic pump P1 are connected to the engine 6
Directly connected in the front-rear direction to the front side of.

The hydraulic oil from the first hydraulic pump P1 is configured to be supplied to the lift cylinder 9 or the rolling cylinder 10 via the flow priority valve 11 and the rolling electromagnetic control valve 12, and the lift cylinder 9, the surplus oil in the flow priority valve 11 is controlled by the operation of the ascending electromagnetic control valve 13 or the descending electromagnetic control valve 14, and the pilot type unload valve 15 or the lowering valve 16 is operated based on the control. It is configured to be expanded and contracted by being driven. Further, the rolling cylinder 10 is configured to be expanded / contracted by the operation of the electromagnetic control valve 12 for rolling.

The hydraulic oil from the second hydraulic pump P4 is configured to be supplied to a hydraulic motor M1 for driving the mower 4 via a three-position switching type electromagnetic control valve 17.
At the neutral position of the electromagnetic control valve 17, the hydraulic motor M1
Both the side reciprocating oil passages are cut off to stop the flow of hydraulic oil on the hydraulic motor M1 side, thereby applying a braking force to the mower 4.

Each of the hydrostatic continuously variable transmissions 8 drives hydraulic motors M2 and M3 which respectively drive the left and right crawler type traveling devices 5 with hydraulic oil from a pair of variable displacement hydraulic pumps P2 and P3. It is configured as shown in FIG.
As also shown, the electric motor 18 rotationally operates the trunnion shafts 19 of the variable displacement hydraulic pumps P2 and P3 to change the swash plate angle, so that the forward and backward movements can be continuously changed. ing.

As shown in FIG. 3, each electromagnetic control valve 12, 1
Each of the electric motors 3, 14, 17 and the electric motor 18 is configured to be operation-controlled by a control signal from the control device 7 provided based on wireless remote control by the remote control device 20.

The remote control device 20 includes a first operating lever 20a for shifting the traveling vehicle body 1, a second operating lever 20b for rotating the traveling vehicle body 1, a third operating lever 20c for operating the mower 4 up and down, and A fourth operating lever 20d for operating the mower 4 rolling is provided, and by operating the first operating lever 20a to either the front or rear with the second operating lever 20b set to the neutral position, the traveling machine body 1 can be moved straight forward or backward at a desired speed according to the operation amount, and by operating the second operation lever 20b while operating the first operation lever 20a, the traveling machine body can be operated. 1 can be turned to either the left or the right. On the other hand, the mower 4 can be moved up or down by operating the third operation lever 20c to the front or rear,
By operating the fourth operating lever 20d to the left or right, the mower 4 can be rolled to the left or right.

As shown in FIGS. 1, 4 and 5, the crawler type traveling device 5 includes a track frame 5A, a drive sprocket 5B provided at the rear end of the track frame 5A,
A tension wheel 5C provided at the front end of the track frame 5A, a plurality of idler wheels 5D arranged between the drive sprocket 5B and the tension wheel 5C, and winding around the drive sprocket 5B and the tension wheel 5C. The crawler belt 5E and the like are used. The crawler belt 5E is configured by connecting a plurality of metal shoe plates 5a in an endless state. At both left and right ends of each shoe plate 5a, a connecting plate portion 21A protruding outward from the side end of the shoe plate 5a, and a protruding portion protruding outward from the outer surface of the connecting plate portion 21A. 21B and spike metal fittings 2
1 is detachably bolted. The connecting plate portion 21A is made of a flat steel material. Projection 21B
Is made of a round steel material having a conical portion.
Further, the left and right spike metal fittings 21 connected to the left and right ends of the shoe plate 5a are arranged so that the respective protruding portions 21B are located at symmetrical positions with the center of the shoe plate 5a sandwiched therebetween in the connected state with the shoe plate 5a. It is configured.

That is, the shoe plate 5 having the connecting plate portion 21A of the spike fitting 21 on the outer side of the traveling machine body 1
By largely projecting outward from the side end of a to increase the tipping angle of the traveling body 1, the traveling body 1 can be prevented from tipping over as much as possible in a work place where undulations and slopes are severe.
Then, the protruding portion 21B of the spike metal fitting 21 is projected outward from the outer surface of the connecting plate portion 21A so as to bite into the traveling road surface of the work site, whereby a road surface state in which mulch without grip is accumulated. By suppressing the slippage of the traveling vehicle body 1 in a poor working place, the thrust of the traveling vehicle body 1 is improved and the contour line traveling on a sloping ground can be performed. In addition, the protrusion 21 of the spike fitting 21
By locating B in a symmetrical position with the center of the shoe plate 5a in between, the load is evenly applied to the protrusions 21B at the left and right ends of the shoe plate 5a.

As shown in FIGS. 1 and 4, on the rear surface of the traveling machine body 1, the main frame 1A of the traveling machine body 1 and the traveling machine body 1 are provided.
Arch-shaped center frame 1B erected approximately in the center of the
Is provided with a rear frame 22 made of steel pipe material supported by auxiliary frames 1a extending from both left and right sides of the rear frame 22 and the center frame 1B.
This prevents the engine 6 and the like mounted on the rear portion of the traveling machine body 1 from being damaged due to a fall of the traveling machine body 1 or the like.

[Other Embodiments] Other embodiments will be listed below. (1) The mower may be a riding type or a walking type as long as it has the crawler type traveling device 5. (2) The mowing work device is not limited to the Fleer-Mower type, but various types can be adopted. (3) The shoe plate 5a of the crawler type traveling device 5 may be made of rubber mainly made of a synthetic resin material or the like. (4) Various modifications can be made to the configuration of the spike metal fitting 21, for example, one connecting plate portion 21A protruding outward from both side ends of the shoe plate 5a and the outer surface of this connecting plate portion 21A. It may be composed of two projecting portions 21B projecting outward from. (5) The number of the protruding portions 21B provided on the connecting plate portion 21A can be variously changed from one to a plurality. (6) Connection plate portion 21A for the shoe plate 5a
The protruding length of the traveling body 1 of the connecting plate portion 21A with respect to the shoe plate 5a can be variously changed.
The longer the protruding length toward the outer side, the larger the falling angle of the traveling machine body 1, and the more stable the traveling machine body 1 becomes. Further, the connection plate portion 21A with respect to the shoe plate 5a does not have to project inward of the traveling machine body 1. (7) The protruding length of the protruding portion 21B with respect to the connecting plate portion 21A can be variously changed, and the longer the protruding length of the protruding portion 21B with respect to the connecting plate portion 21A, the smaller the slippage of the traveling body 1 becomes. become. (8) The method of connecting the spike metal fittings 21 can be variously modified as long as it is detachable such as bolt connection or pin connection. (9) The protrusion 21B may have a round bar shape, a rectangular bar shape, a flat plate shape, a T shape, or the like. (10) The material of the spike metal fitting 21 may be a metal material other than steel or a rigid resin material.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Overall side view of the mower

[Fig.2] Hydraulic circuit diagram of the mower

FIG. 3 is a block diagram showing a control configuration.

[Figure 4] Rear view of the mower

FIG. 5 is a vertical cross-sectional view of the crawler type traveling device showing a connected state of spike metal fittings.

[Explanation of symbols]

 5a shoe plate 21 spike metal fitting 21A connecting plate portion 21B projecting portion

Claims (1)

[Claims] 1. A shoe plate (5a), a connecting plate portion (21A) projecting outward from a side end of the shoe plate (5a), and the connecting plate portion (21A).
A projecting portion (21B) protruding outward from the outer surface of A)
A crawler-type traveling device for a mower, which is configured by detachably connecting spike metal fittings (21) including and.