JP7157451B2 - Marker device and work machine with marker device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a marker device used in a work machine connected to a traveling vehicle and a work machine equipped with the marker device.

2. Description of the Related Art Conventionally, for example, a marker device described in Patent Document 1 below is known.

This conventional marker device includes, for example, a fulcrum fixed to a square pipe frame of a work machine connected to a three-point link of a tractor, and a vertical rotation center shaft (support shaft) that rotates in the front-rear direction on the fulcrum. A marker body is provided so as to be rotatable in a direction, and has a used state and a non-used state.

Japanese Patent Application Laid-Open No. 2002-330604

However, in the above-described conventional marker device, if the unused marker body is stored within the width of the work machine when the marker body is not in use, for example, when the work machine is lifted up, it may cause an unnecessary A marker body in use may interfere with the tractor.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a marker device and a work machine with a marker device that can prevent a marker body from interfering with a traveling vehicle.

A marker device according to claim 1 is a marker device used in a work machine connected to a traveling vehicle, and includes a support member and a support member provided on the support member so as to be vertically rotatable about a rotation center axis. , and a marker body that is in a used state and a non-used state, and the rotation center axis is inclined with respect to the front-rear direction.

A marker device according to claim 2 is a marker device used in a work machine connected to a traveling vehicle, and includes a support and a support provided on the support so as to be vertically rotatable about a rotation center axis. , and a marker body that is in a used state and a non-used state, and the center axis of rotation is inclined with respect to the front-rear direction so as to be positioned higher toward the front end side in a side view.

A marker device according to claim 3 is a marker device used in a work machine connected to a traveling vehicle, and includes a support and a support provided on the support so as to be vertically rotatable about a rotation center axis. , and a marker body that is in a use state and a non-use state, and the rotation center axis is inclined with respect to the front-rear direction so as to be positioned outward toward the front end side in a plan view.

According to a fourth aspect of the present invention, there is provided a marker device for use in a working machine connected to a traveling vehicle, comprising: a support member; , and a marker body that is in a used state and a non-used state, and the rotation center axis is inclined with respect to the front-rear direction so as to be positioned higher toward the front end side in side view, and further toward the front end side in plan view. It is inclined with respect to the front-rear direction so as to be positioned on the outer side.

The marker device according to claim 5 is the marker device according to any one of claims 1 to 4, wherein the marker body has a bent shape provided on the support so as to be rotatable in the vertical direction about a rotation center axis. and a marker member provided on the tip side of the arm member.

The marker device according to claim 6 is the marker device according to any one of claims 1 to 5, wherein the traveling vehicle has a working machine connection part capable of raising and lowering the working machine, and the marker body is not used. The marker body is stored within the width of the working machine when the working machine is in the state, and the marker body in the unused state does not interfere with the traveling vehicle when the working machine is lifted by the working machine connecting portion.

A work machine with a marker device according to claim 7 comprises a work machine connected to a traveling vehicle, and a marker device according to any one of claims 1 to 6 provided on both left and right sides of the work machine. is.

According to the present invention, it is possible to prevent the marker body from interfering with the traveling vehicle.

1 is a side view of a work machine with a marker device according to one embodiment of the present invention; FIG. It is a top view of a working machine with a marker device same as the above. FIG. 10 is a partial side view of the work machine with the marker device (marker use state); FIG. 3 is a partial plan view of the working machine with the marker device (marker use state); FIG. 2 is a partial side view of the working machine with the marker device (marker non-use state); It is a side view of the marker member of the marker device of the working machine with the same marker device. It is a top view of the marker member of a marker apparatus same as the above. FIG. 4 is an operation explanatory view of the same marker device; It is a side view which shows the modification of a marker apparatus same as the above.

An embodiment of the present invention will be described with reference to FIGS. 1 to 8. FIG.

In FIGS. 1, 2 and 8, reference numeral 1 denotes an agricultural working machine, which is a fertilizing and seeding machine that simultaneously performs fertilizing and seeding as agricultural work, for example. In other words, the agricultural implement 1 is connected to the rear portion of a tractor 2, which is a traveling vehicle, and performs agricultural work (fertilization and seeding) while moving forward (forward) as the tractor 2 travels.

The tractor 2 has a tractor body 3, left and right front wheels 4 are provided on the front side of the tractor body 3, and left and right rear wheels 5 are provided on the rear side. At the rear of the tractor body 3, a three-point link (hydraulic work machine mounting device) 8 having one top link (not shown) and two left and right lower links 7 is provided.

A three-point link 8 at the rear of the tractor 2 is connected to the agricultural implement 1 via a quick coupler 9 , and the agricultural implement 1 moves up and down based on the operation of the three-point link 8 . In other words, the tractor 2 has a three-point link 8 at its rear portion, which is a working machine connection part capable of raising and lowering the agricultural working machine 1 . Then, for example, when moving between farms or moving to a warehouse after completion of work, the agricultural implement 1 is lifted to a predetermined height position (lifting position) by upward rotation of the three-point link portion 8 .

The agricultural implement 1 has a longitudinal shape with its longitudinal direction extending in the left-right direction, and its width in the left-right direction (length dimension in the left-right direction) A is larger than the vehicle width of the tractor 2, for example, about 2500 mm. (See Figure 8). Therefore, both left and right ends of the agricultural implement 1 are positioned to protrude outward from the rear wheels 5 of the tractor 2 in a rear view.

As shown in FIGS. 1 and 2, the agricultural implement 1 has a body 11 which is detachably connected to a three-point link 8 of the tractor 2 via a quick coupler 9. have. The three-point connecting portion 12 is composed of one top mast 13, two left and right lower arms 14, and the like.

An input shaft 16 is rotatably provided in the mission case portion 15 of the machine body 11, and this input shaft 16 is connected to the PTO shaft of the tractor 2 via a joint (not shown). The fuselage 11 has a frame portion (mounting portion) 17 made of a long square pipe having a longitudinal direction in the left-right direction.

The agricultural work machine 1 includes a tillage means 21 that performs tillage work with a tillage tine 20 while rotating in a predetermined direction by power from the input shaft 16 side, a groove forming means 22 such as a groove disk for forming sowing grooves in the field, A fertilizing means 23 for sowing fertilizer in front of the tilling means 21 and a sowing means 24 for sowing seeds in the sowing groove are provided. The agricultural implement 1 also includes crushing wheels 26 for crushing, a soil plate 27 for cultivating soil, a step 28 on which an operator rides, and a pair of left and right side discs 29. - 特許庁

The fertilizing means 23 has a plurality of fertilizer hoppers 31 for storing fertilizer, and below the fertilizer hoppers 31, a fertilizer application motor 32 for feeding the fertilizer in the fertilizer hoppers 31 is provided. The sowing means 24 has a plurality of seed hoppers 33 for storing seeds, and below the seed hoppers 33 is provided a sowing motor 34 for feeding the seeds in the seed hoppers 33 .

Marker devices 41 are provided on both the left and right sides of the agricultural work machine 1, respectively, for attaching marks (for example, straight grooves) on the farm field to serve as guides for traveling in the next process by turning back at the edge of the farm field. is provided.

That is, the agricultural working machine 1, the left marker device 41 (41L) detachably attached to the left side of the body 11 of the agricultural working machine 1, and the right side detachably attached to the right side of the body 11 of the agricultural working machine 1. , and the marker device 41 (41R) constitute the working machine 40 with the marker device.

The left marker device 41 (41L) and the right marker device 41 (41R), which are attached to both sides of the agricultural implement 1, differ only in that they are configured symmetrically. , the specific configuration of the marker device 41 on the left will be described.

The marker device 41, as shown in FIGS. 46 is rotatable in the vertical direction about an inclined rotation center axis (rotation center axis X) 48, and the rotation changes the state of use (projecting outward from the agricultural implement 1 to mark the field). A marker body 47 that can be selectively switched between a protruding state with the machine 1 attached) and a non-use state (a retracted state stored within the width of the agricultural work machine 1), and a central axis 48 of rotation of the marker body 47 with respect to the support body 46. It is equipped with an electric cylinder 49 which is an extendable drive means for rotating vertically around the center.

A rotation center axis (support shaft) 48, which is a rotation fulcrum of the marker body 47, is constituted by, for example, the shaft portion 50a of the bolt 50, and a line passing through the axis of the shaft portion 50a is the rotation center axis X. be. The rotation center shaft 48 is inclined at a predetermined inclination angle α with respect to the front-rear direction so that it is positioned higher toward the front end side in side view (see FIG. 3), and further outward toward the front end side in plan view. direction (in the case of the left marker body 47, the front end side is leftward, and in the case of the right marker body 47, the front end side is rightward). (See Figure 4).

The inclination angle α is, for example, 1° to 20°, preferably approximately 14°. Also, the inclination angle β is, for example, 20° to 30°, preferably approximately 25°.

Further, the rotation angle of the marker body 47 about the rotation center axis (rotation fulcrum) 48 is, for example, 90° to 120°, preferably approximately 105°. In other words, the marker body 47 is put into a non-use state by rotating about 105° in one direction (upward) about the rotation center shaft 48 with respect to the support body 46. When it rotates about 105 degrees in the other direction (downward) about the rotation center shaft 48 with respect to 46, it is ready for use. The entire marker body 47 is stored within the width of the agricultural work machine 1 when not in use.

The support body 46 has a plate-like base 51 that is detachably attached to the frame portion 17 of the airframe 11 by means of attachments 45 by retrofitting. Supporting plates 52, which are a pair of plate-like supporting members facing each other with a distance therebetween, are fixed to the base 51, and bolts 50 for support are provided across the supporting plates 52. As shown in FIG. That is, the shaft portion (screw shaft portion) 50a of the bolt 50 is inserted through the holes of both support plates 52, and the nut 53 is screwed onto the tip side of the shaft portion 50a.

Both support plates 52 of the support body 46 are provided with concave first engagement receiving portions 56 which are detachably engaged with the pin-shaped engagement portions 55 of the marker body 47 when the marker body 47 is in use, It has a concave second engagement receiving portion 57 that engages detachably with the pin-shaped engaging portion 55 of the marker body 47 when the marker body 47 is not in use.

The marker body 47 includes a bent arm member 61 provided on both support plates 52 of the support body 46 so as to be rotatable in the vertical direction about the rotation center shaft 48, and a forward and backward direction at the tip of the arm member 61. and a marker member 62 which is rotatably provided to mark the field. The bent arm member 61 is bent at one point in the middle in the longitudinal direction so that the marker member 62 faces forward.

The arm member 61 includes a square tubular first arm 66 and a square tubular shaped first arm 66 which is slidably inserted into the first arm 66 and whose projection length from the inside of the first arm 66 is adjustable. It has a second arm 67 and a mounting plate 68 fixed to the tip of the second arm 67 .

The first arm 66 has a bent portion 70 at one point in the middle in the longitudinal direction. For this reason, as shown in FIG. 4, when the marker body 47 is in use, the first arm 66 of the arm member 61 of the marker body 47 in this use state moves forward toward the base end side (right end side) in plan view. and a non-inclined portion 72 positioned along the left-right direction in a plan view. The base end side of the second arm 67 is slidably inserted into the non-inclined portion 72, and the inserted second arm 67 is secured to the first arm 66 by fixing means (for example, bolts, lock nuts, etc.) 73. is releasably fixed.

Further, the first arm 66 has a cylindrical portion 75 at its base end, and the shaft portion 50a of the bolt 50 is inserted into this cylindrical portion 75. As shown in FIG. A cylindrical collar (not shown) is interposed between the outer peripheral surface of the shaft portion 50 a of the bolt 50 and the inner peripheral surface of the tubular portion 75 of the first arm 66 . Further, a stopper pin 76 is fixed near the proximal end of the first arm 66 , and the stopper pin 76 constitutes the engaging portion 55 of the marker body 47 .

The electric cylinder 49 has a cylinder body 81 and a rod 82 that moves in and out of the cylinder body 81 . A mounting portion 83 of the cylinder main body 81 is rotatably mounted on a cylinder mounting bolt 84 that is installed on both support plates 52 . A mounting portion 85 of the rod 82 is rotatably mounted via a pin 87 to a cylinder mounting plate 86 projecting from the first arm 66 .

As shown in FIGS. 6 and 7, the marker member 62 is attached to a mounting plate 68 at the tip of the second arm 67 of the arm member 61 so as to be rotatable in the front-rear direction about a left-right axis 90. It has a marker arm 91 and a marker 92 attached to the lower end of the marker arm 91 so as to be adjustable in angle and height.

The marker arm 91 is urged forward by a spring 93 as urging means and is in contact with a backing plate 94 . Therefore, when an external force of a predetermined magnitude or more acts on the marker 92 due to collision with a stone or a lump of soil in a field, for example, the marker arm 91 rotates backward against the biasing force of the spring 93. This avoids damage to the marker 92 due to the collision. A plurality of height adjustment holes 95 are formed on the lower end side of the marker arm 91 so that the height of the marker 92 can be adjusted.

The marker 92 has a grooving blade portion (marker portion) 96 for forming a groove, which is a mark for running, in the field, and a pair of mounting plate portions 97 to which the grooving blade portion 96 is fixed. . A hole is formed in the lower portion of the mounting plate portion 97, and an arcuate long hole 99 is formed in the upper portion of the mounting plate portion 97 with the hole as the center.

A shaft portion 101a of a mounting bolt 101 is inserted through the hole of the mounting plate portion 97 and the hole of the marker arm 91, and a nut 102 is screwed onto the tip side of the shaft portion 101a. A shaft portion 103a of a mounting bolt 103 is inserted through the elongated hole 99 of the mounting plate portion 97 and the hole of the marker arm 91, and a nut 104 is screwed onto the distal end side of the shaft portion 103a. Thus, the marker 92 is attached to the lower end of the marker arm 91 so as to be adjustable in angle and height.

Further, as shown in FIG. 1, the work machine 40 with the marker device includes a control means 105 for controlling the left and right electric cylinders 49 so that the left and right marker bodies 47 are alternately put into use during work. This control means 105 has, for example, a switch 106 which is turned on and off according to the elevation of the agricultural implement 1, and appropriately controls each electric cylinder 49 based on the on/off of the switch 106. FIG.

The changeover switch 106 is turned on and off by the operation of an operating body 110 composed of, for example, a chain 107, a spring 108 and an arm 109. When the agricultural implement 1 is lifted to the lifting position by the three-point link portion 8 of the tractor 2, the chain 107 of the working body 110 is loosened and the changeover switch 106 is turned off. Further, when the agricultural implement 1 is lowered to the working position by the three-point link portion 8 of the tractor 2, the chain 107 of the operating body 110 is stretched and the changeover switch 106 is turned on.

Next, the operation and the like of the marker device 41 will be described.

When the tractor 2 travels forward to move the working machine 40 with the marker device forward, the fertilizing means 23 performs the fertilizing work and the sowing means 24 performs the sowing work.

At this time, a marker body 47 of the left or right marker device 41 in the state of use makes a mark (for example, a groove) on the field as a guideline for running in the next process by folding back at the edge of the field.

Therefore, the worker (driver) riding the tractor 2 should drive the tractor 2 so that the mark of the field coincides with the center of the tractor 2 in the width direction.

Here, as shown in FIG. 8, in the case of the comparative example (the configuration in which the turning center axis b of the marker body a is positioned along the front-rear direction), the left and right marker bodies a are positioned within the width of the agricultural work machine 1. When the agricultural implement 1 is lifted by the three-point link portion 8 of the tractor 2 in the stored non-use state, the left and right marker bodies a in the non-use state are positioned at predetermined portions of the tractor 2 (for example, the cabin of the tractor body 3). A problem that interferes with

On the other hand, in the case of the present embodiment (the configuration in which the rotation center axis 48 of the marker body 47 is inclined with respect to the front-rear direction), unlike the comparative example, the left and right marker bodies 47 are positioned within the width of the agricultural work machine 1. When the tractor 2 is not in use, the three-point link 8 of the tractor 2 holds the agricultural implement 1 together with the left and right marker devices 41 at a predetermined height position (for example, the marker body 47 in the unused state and the tractor 2 in a side view). ), the left and right marker bodies 47 in the unused state and the tractor body 3 of the tractor 2 do not interfere.

Therefore, according to the marker device 41 according to the present embodiment described above, the rotation center axis 48 of the marker body 47 is inclined with respect to the front-rear direction so as to be positioned higher toward the front end side in a side view, and in a plan view. The arm member 61 of the marker body 47 is inclined with respect to the front-rear direction so that the front end side is located on the outer side, and the arm member 61 of the marker body 47 is located at one place in the middle of the longitudinal direction of the arm member 61 so that the marker member 62 faces the front side. Since it is bent at the bent portion 70, when the agricultural implement 1 is lifted by the three-point link portion 8 of the tractor 2, the unused marker body 47 stored within the width of the agricultural implement 1 interferes with the tractor 2. can be properly prevented.

Further, by storing the marker bodies 47 of the marker devices 41 on both the left and right sides within the width of the agricultural work machine 1, the unused marker bodies 47 do not protrude from the agricultural work machine 1 to the side, thus improving the running safety. can be improved.

Note that the marker body 47 of the marker device 41 is not limited to the configuration described above, and may be, for example, the one shown in FIG.

The marker body 47 shown in FIG. 9 has a gas spring 111 as biasing means instead of the spring 93. As shown in FIG. One end of the gas spring 111 is rotatably attached to the mounting plate 68 . The other end of the gas spring 111 is rotatably attached to one mounting plate 112 selected from a plurality of mounting plates 112 projecting from the marker arm 91 .

Also, the marker body 47 shown in FIG. Grooving disc 113 is rotatably attached to the lower end of mounting arm 114 . The upper end side of the mounting arm 114 is attached to a mounting pipe 115 provided on the marker arm 91 with a mounting bolt 116 so as to be adjustable in height.

Also, the marker device 41 having the marker body 47 shown in FIG. 9 can achieve the same effect, such as preventing the marker body 47 from interfering with the tractor 2 .

The agricultural working machine (working machine) provided with the marker device is not limited to the fertilizing and seeding machine, and may be, for example, a fertilizing machine, a seeding machine, or other working machines.

Further, the marker device is not limited to a configuration including driving means such as a cylinder or a motor that rotates the marker body, and may be a manual configuration in which an operator manually rotates the marker body.

1 Agricultural working machine that is a working machine 2 Tractor that is a traveling vehicle 8 Three-point link part that is a working machine connection part
40 Working machine with marker device
41 Marker Device
46 Supports
47 Markers
48 Rotation center axis
61 Arm member
62 Marker parts

Claims (6)

a work machine connected to the traveling vehicle;
and marker devices provided on both left and right sides of the work machine ,
The marker device is
a support;
a marker body provided on the support so as to be vertically rotatable about a rotation center axis, and to be turned into a use state and a non-use state by rotation about the rotation center axis;
The rotation center axis is inclined with respect to the front-rear direction so as to be positioned higher toward the front end side in a side view,
The traveling vehicle is a tractor including a working machine connection part capable of lifting and lowering the working machine,
The marker body of the marker device is stored within the width of the work machine when not in use, and
When the work machine is lifted together with the marker device by the work machine connection part, the marker body in the unused state does not interfere with the tractor.
A work machine with a marker device characterized by: a work machine connected to the traveling vehicle;
marker devices provided on both left and right sides of the work machine,
The marker device is
a support;
a marker body provided on the support so as to be vertically rotatable about a rotation center axis, and to be turned into a use state and a non-use state by rotation about the rotation center axis;
The rotation center axis is inclined with respect to the front-rear direction so as to be located outward toward the front end side in a plan view,
The traveling vehicle is a tractor including a working machine connection part capable of lifting and lowering the working machine,
The marker body of the marker device is stored within the width of the work machine when not in use,
When the work machine is lifted together with the marker device by the work machine connection part, the marker body in the unused state does not interfere with the tractor.
A work machine with a marker device characterized by: a work machine connected to the traveling vehicle;
marker devices provided on both left and right sides of the work machine,
The marker device is
a support;
a marker body provided on the support so as to be vertically rotatable about a rotation center axis, and to be turned into a use state and a non-use state by rotation about the rotation center axis;
The rotation center axis is inclined with respect to the front-rear direction so as to be positioned higher toward the front end side in side view, and inclined relative to the front-rear direction so as to be positioned further outward toward the front end side in plan view. cage,
The traveling vehicle is a tractor including a working machine connection part capable of lifting and lowering the working machine,
The marker body of the marker device is stored within the width of the work machine when not in use,
When the work machine is lifted together with the marker device by the work machine connection part, the marker body in the unused state does not interfere with the tractor.
A work machine with a marker device characterized by: The marker body of the marker device comprises:
a bent arm member provided on the support so as to be vertically rotatable about the rotation center axis;
and a marker member provided on the tip side of the arm member
The work machine with a marker device according to any one of claims 1 to 3, characterized in that: The working machine performs at least one of seeding work and fertilization work.
The work machine with a marker device according to any one of claims 1 to 4, characterized in that: Used in the work machine with a marker device according to any one of claims 1 to 5
A marker device characterized by:

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