JP2015186458A - Rake - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure of a rake that prevents grass from being caught on end parts of nuts and bolts for attaching tines.SOLUTION: A rake 1 comprises a rotor 4 for rotating radially provided tine arms 5 by 360 degrees along an outer circumferential direction and shaking the tine arms 5 around an axial direction and tines 6 attached to the tine arms 5 attached to the rotor 4, and is provided with nut members 9 including circularly curved surfaces along inner wall surfaces of the cylindrical tine arms 5. When the tines 6 are fixed to the tine arms 5 by using fixing tools 7, bolts 8 are inserted from the side of the fixing tools 7, the tines 6 are fixed by the nut members 9, and the bolts 8 are prevented from protruding from the opposite side of the tine arms 5.

Description

  The present invention relates to a rake in which grass, wheat straw, etc. (hereinafter collectively referred to as “grazing”) is collected in a row direction while traveling in a field, and more specifically, a tine arm contacts the collected grass. Even if it is a case, it relates to a rake that does not scatter grass.

  A conventional general rake structure will be described with reference to FIG. The rake is used by being pulled by a tractor in a large farm field, and the like. The rotator 101 rotates by using the driving force of the tractor's PTO, and a plurality of tine arms provided radially on the outer periphery of the rotor 101. 102 and a plurality of tines 103 provided on the distal end side of the tine arm 102 are provided.

  When such a rake is used, the tine arm 102 provided on the outer periphery of the rotor 101 is rotated counterclockwise while traveling by a tractor. At this time, the tine arm 102 can rotate while swinging in the axial direction thereof, and the tine is brought into contact with the ground in the region A in FIG. Is separated from the ground. Then, by rotating the tine 103 while raising and lowering the tine 103 in this way, the grass is collected in the direction of the region B, and then the grass can be collected using a roll baler or the like.

  By the way, when the tine 103 is attached to the tine arm 102 of such a rake, as shown in FIG. 8, the bolt 104 is passed through the tine arm 102 formed in a cylindrical shape, and a nut 105 is provided at the end protruding from the opposite side. The tine 103 is fixed by attaching.

Japanese Utility Model Publication No. 62-1553829

  However, when attaching a tine by such a method, the following problems have occurred.

  That is, if the nut 105 or the like protrudes on the opposite side of the tine 103 as shown in FIG. 8, when the tine arm 102 is rotated, the grass that has been collected is caught on the protruding portion, and the vine type In some cases, the grass was dragged out and scattered. More specifically, during traveling, the tine 103 is grounded in the rotation area A of the tine arm 102 to collect the grass, and in the rotation area B, the tine 103 is lifted to collect the grass in a mountain shape. When the tine arm 102 is rotated while traveling by a tractor under a rough situation, as shown in FIG. 9, the bolts 104, nuts 105, etc. of the tine arm 102 that have already rotated on the grass collected like a mountain come into contact. As a result, he grabbed the grass and scattered the grass in a vine manner.

  Further, in the conventional structure in which the bolt 104 is tightened from the opposite side with the nut 105, if the tine 103 is tightened strongly to fix the tine 103, the cylindrical tine arm 102 is deformed. There is a possibility that the direction in which 103 faces changes.

  Accordingly, the present invention has been made paying attention to the above problems, and an object of the present invention is to provide a rake structure in which grass is not caught at the end of a nut or bolt for attaching a tine.

  That is, in order to solve the above-mentioned problems, the present invention rotates a tine arm provided in a radial manner along the outer peripheral direction, swings the tine arm around the axial direction, and a tine arm attached to the rotor. In the rake comprising the tine attached to the nut, a nut member is provided inside the cylindrical tine arm, and a bolt is inserted from the tine side via a fixture, and the tine is fixed by the nut member. Is.

  If comprised in this way, since the front-end | tip of a nut member and a bolt will not be protruded from a tine arm, even if a tine arm contacts a hill of a pasture, it will not catch a pasture and will not be dragged out like a vine.

  In such an invention, the nut member is configured to bend along the inner wall surface of the cylindrical tine arm.

  In this case, the nut member is in close contact with the inner wall surface of the tine arm, so that the tine arm is not deformed even if the bolt and the nut are tightened strongly.

  Furthermore, when providing the said tine with two or more, it comprises with one nut member with respect to several tine.

  With this configuration, when inserting the nut member into the tine arm, the bolt insertion holes and female screw portions of a plurality of tines can be combined at a time. The position can be easily adjusted.

  According to the present invention, a tine arm provided radially is rotated along an outer peripheral direction, and a rotor that swings the tine arm about an axial direction and a tine attached to a tine arm attached to the rotor are provided. In this rake, a nut member is provided inside the cylindrical tine arm, a bolt is inserted from the tine side via a fixture, and the tine is fixed by the nut member. No longer protrudes from the tine arm, and even if the tine arm comes into contact with the mountain of grass, it will not catch the grass.

The figure which shows the whole structure of the rake which shows one embodiment of this invention A view of the tine arm in the same form as seen from the axial direction The figure which shows the attachment state of the tine in the same form The exploded perspective view which shows the attachment state of the tine in the same form The figure which shows the nut member in other embodiment The figure which shows the contact state with the rotation of the tine in the same form, and the pasture mountain Diagram showing general rake in conventional example The figure which shows the attachment state of the tine in a prior art example The figure which shows the contact state with rotation of a tine arm and pasture mountain in a prior art example

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The rake 1 in this embodiment is towed by a tractor or the like so as to collect the pasture in the field in the row direction, and as shown in FIG. A rotor 4 provided on the rear end side of the frame 3 and provided with a radial tine arm 5 on the outer peripheral portion, and a plurality of tines 6 provided on the front end side of the tine arm 5 are provided. In such a configuration, when attaching the tine 6 to the tine arm 5, as shown in FIG. 2, the nut member 9 is inserted into the cylindrical tine arm 5 and fixed with the bolts 8 using the fixture 7. It is something that can be done. Hereinafter, an embodiment of the present invention will be described in detail.

  First, the connecting part 2 provided on the front side of the rake 1 includes an upper connecting part 21 connected to the top link of the tractor and a lower connecting part 22 connected to the lower link of the tractor. As a result, the main frame 3 in the longitudinal direction can be pulled. A shaft (not shown) that is driven by the tractor's PTO is passed inside the main frame 3, and the shaft is rotated by the driving force of the PTO.

  On the other hand, the rotor 4 provided on the rear end side of the main frame 3 is configured such that the tine arms 5 are radially provided on the outer periphery thereof, and the tine arms 5 are rotated 360 degrees around the rotor 4 and The tine arm 5 is swung around the axial direction. When the tine arm 5 is rotated or swung 360 degrees, the driving force of the shaft is used to drive the tine arm 5 using a rotation conversion mechanism or a swinging rotation mechanism provided inside the rotor 4.

  As shown in FIGS. 2 and 4, the tine arm 5 provided on the outer periphery of the rotor 4 is configured in a cylindrical shape, and a plurality of tines 6 can be attached to the tip side. As such a tine 6, as shown in FIGS. 2 and 3, a coil portion 62 is provided on each of the proximal ends of the two forks 61, and a bridge portion 63 is provided between the left and right coil portions 62. The grass is collected by scratching the field with the fork 61. When the fork 61 scratches the farm field, the fork 61 comes to be in the rotational direction of the tine arm 5, but the coil portion 62 can absorb the bending.

  In such a configuration, a configuration when the tine 6 is attached to the tine arm 5 will be described with reference to FIGS.

  The fixing tool 7 for attaching the tine 6 to the tine arm 5 can fix the tine 6 by sandwiching the bridge portion 63 between the coil portions 62 from above, and as shown in FIG. A tongue piece 72 and an arm circumscribing piece 74 are provided before and after the U-shaped bent portion 71.

  This tongue piece 72 can be inserted into the bridge portion 63 in the gap of the coil portion 62 from above, and as shown in FIG. This makes it possible to prevent the fork 61 from swinging left and right. Further, as shown in FIG. 3, coil fixing pieces 73 configured to be wider than the lower end portions are provided on the left and right sides of the tongue piece 72, and the fixing tool 7 is inserted from above the bridge portion 63. Thus, as shown in FIG. 3, the coil portion 62 can be pressed from the inner hollow portion of the coil portion 62.

  On the other hand, the arm circumscribing piece 74 is provided so as to bend along the outer periphery of the tine arm 5 as shown in FIGS. 2 and 4, whereby the tine arm is strongly fixed when the tine 6 is firmly fixed with the bolt 8. 5 is not deformed.

  The tongue piece 72 and the arm circumscribing piece 74 are provided with a hole 75 portion for allowing the bolt 8 to pass therethrough, and after the bridge portion 63 is positioned inside the bent portion 71 of the fixture 7, By inserting the bolt 8, the bend portion 71 and the bolt 8 prevent the tine 6 from coming off.

  On the other hand, a nut member 9 as shown in FIGS. 2 and 4 is provided in the cylindrical inside of the tine arm 5. The nut member 9 can be inserted from the tip opening 51 of the tine arm 5, and is configured to have a circular curved surface along the inner wall of the tine arm 5. Here, the nut members 9 may be provided individually corresponding to the respective tines 6. However, in this case, when inserting the nut members in the back, the nut members and the bolt insertion holes 52 in the back are inserted. It becomes difficult to align. In this embodiment, therefore, a single nut member 9 is provided with a plurality of female screw portions 91 corresponding to the respective bolt insertion holes 52, so that all the bolt insertion holes 52 can be aligned simultaneously. I am doing so. At this time, when the bolt insertion hole 52 and the female screw portion 91 are aligned, the alignment may be performed by visual observation, or the tip opening portion 51 of the tine arm 5 and the end of the nut member 9 are made to coincide with each other. In this case, the bolt insertion hole 52 and the female screw portion 91 may be made to coincide with each other.

  In addition, the nut member 9 is configured in a semi-cylindrical shape here, but the nut member 9 may be configured in a cylindrical shape as shown in FIG. However, if the nut member 9 is configured in a semi-cylindrical shape as described above, a gap can be formed between the tine arm 5 and the nut member 9, so that the position of the female screw portion 91 can be visually observed from there. There is an advantage that the bolt insertion hole 52 and the female screw portion 91 can be easily aligned.

  Alternatively, when the nut member 9 is formed in a cylindrical shape, a mark 92 along the direction of the hole of the female screw portion 91 as shown in FIG. 5A is shown so that the direction of the hole of the female screw portion 91 can be understood. May be provided at the end. Further, since it is necessary to rotate the nut member 9 when the female screw portion 91 is aligned, as shown in FIG. 5B, a linear concave portion along the direction of the hole of the female screw portion 91 is obtained. 93 may be provided at the end, and a tool such as a flat-blade screwdriver may be inserted into the recess 93 and rotated to match the positions of the holes.

  And the nut member 9 comprised in this way is inserted from the front end side of the tine arm 5, and the bolt insertion hole 52 and the internal thread part 91 are aligned. At the same time, the fixture 7 is inserted into the bridge portion 63 of the tine 6. Then, the bolt 8 is inserted from the hole 75 of the fixture 7 and attached to the female thread portion 91 of the nut member 9 through the bolt insertion hole 52. Then, by tightening the bolt 8, the tine 6 can be pressed toward the tine arm 5 by the coil fixing piece 73, and the bridge portion 63 is sandwiched between the inside of the bent portion 71 and the bolt 8, thereby Omission can be prevented. At this time, since the tongue pieces 72 of the fixture 7 are in contact with both side surfaces of the coil portion 62, the fork 61 can be prevented from shaking in the lateral direction, and the forks 61 can be regularly aligned. become.

  Next, the operation when collecting grass using the rake 1 to which the tine 6 is attached will be described.

  When the rake 1 is driven while being pulled by the tractor, the tine arm 5 is brought into contact with the tine 6 in the region A on the right side in the traveling direction and the tine 6 is lifted in the region B on the left side in the traveling direction. Rotate. Then, the tine 6 is raised and lowered by the rotation of the tine arm 5, and the grass is scraped in the direction of rotation of the tine arm 5. At this time, when the tine 6 approaches the region B, the tine arm 5 can be lifted, so that the grass can be collected in the region B. The grass collected in this way rises in a mountain shape as shown in FIG.

  When the rake 1 is run in such a state, this time, the tine arm 5 that lifts the tine 6 rotates and passes over the grass raised in a mountain shape. At this time, if the raised mountain is low, the tine arm 5 passes without contacting the grass, but if the raised mountain is high, or if the tine arm 5 is inclined due to unevenness in the field, the front The rotating tine arm 5 comes into contact with the pasture mountain.

  However, since the tip side of the nut member 9 and the bolt 8 is not protruded from the tine arm 5, there is no possibility of catching grass and dragging it out like a vine. Further, even if the tine arm 5 is in contact with the grass mountain, since the tine arm 5 is formed in a cylindrical shape, the grass can smoothly escape from the tine arm 5 and scatter only the grass at the contact portion. .

  Then, the tine arm 5 is rotated in this way, and the tine 6 is grounded again by rotating the tine arm 5 to the area A, so that the pasture in the field is scratched.

  Thus, according to the above embodiment, the tine arm 5 provided radially is rotated along the outer circumferential direction, and the rotor 4 that swings the tine arm 5 about the axial direction is attached to the rotor 4. In the rake 1 comprising the tine 6 attached to the tine arm 5, a nut member 9 is provided inside the cylindrical tine arm 5, and a bolt 8 is inserted from the tine 6 side through the fixture 7, and the nut Since the tine 6 is fixed by the member 9, even if the tine arm 5 comes into contact with the mountain of the grass, the grass is not caught and it is not dragged like a vine.

  Further, since the nut member 9 is curved along the inner wall surface of the cylindrical tine arm 5, the tine arm 5 is not deformed even if the bolt 8 is tightened strongly.

  Furthermore, since the nut member 9 is configured with respect to the plurality of tines 6, when the nut member 9 is inserted into the tine arm 5, the bolt insertion holes 52 and the female screw portions 91 of the plurality of tines 6 are connected at once. In particular, the positions of the rear bolt insertion hole 52 and the female thread portion 91 can be easily aligned.

  In addition, this invention is not limited to the said embodiment, It can implement in a various aspect.

  For example, although the rake 1 pulled by the tractor has been described in the above embodiment, the same configuration can be applied to a self-propelled rake 1 or the like.

  In the above-described embodiment, the rake 1 having a configuration in which only one rotor 4 is provided has been described. However, the rake 1 having a plurality of rotors 4 and rotating the tine arm 5 can also be applied.

  Further, in the above embodiment, the semi-cylindrical nut member 9 formed with the female screw portion 91 is described as a specific example. However, the bolt 8 is passed through the semi-cylindrical member, and the nut is placed on the tip side. The member 9 may be fixed so that the bolt 8 can be fixed.

  In addition, in the above embodiment, the tine 6 is attached using the fixture 7 as shown in FIG. 4, but the tine 6 may be fixed using another fixture 7, or A hole into which the bolt 8 is inserted may be formed in the tine arm 5, and the bolt 8 may be directly inserted and fixed from there.

DESCRIPTION OF SYMBOLS 1 ... Rake 2 ... Connection part 21 ... Upper connection part 22 ... Lower connection part 3 ... Main frame 4 ... Rotor 5 ... Tine arm 51 ... Opening part at the front end side 52 ... Bolt insertion hole 6 ... Tine 61 ... Fork 62 ... Coil part 63 ... Bridge part 7 ... Fixing tool 71 ... Bending part 72 ... Tongue piece 73 ... -Coil fixing piece 74 ... Arm circumscribing piece 75 ... Hole 8 ... Bolt 9 ... Nut member 91 ... Female thread portion 92 ... Mark 93 ... Recess

Claims (3)

A rotor for rotating the tine arms provided radially along the outer circumferential direction, and swinging the tine arms about the axial direction;
A tine attached to a tine arm attached to the rotor;
In a rake with
A nut member is provided inside the cylindrical tine arm,
A rake, wherein a bolt is inserted from a tine side through a fixture and the tine is fixed by the nut member. The rake according to claim 1, wherein the nut member is configured to bend along an inner wall surface of a cylindrical tine arm. 2. The rake according to claim 1, wherein a plurality of the tines are provided, and the nut member is constituted by one for the plurality of tines.

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