JP3331872B2 - Vertical reciprocating drive, nozzle drive, and automatic spray truck - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical reciprocating drive for moving a nozzle or the like up and down, for example, a nozzle drive for jetting a jet stream to cut down lower leaves of chrysanthemum, and an automatic apparatus equipped with the nozzle drive. More specifically, the present invention relates to a vertical reciprocating drive device, a nozzle drive device, and an automatic spray vehicle that can reduce the load on a driving unit.

[0002]

2. Description of the Related Art Instead of cutting the lower leaves of chrysanthemum by hand, instead of cutting the lower leaves of the chrysanthemum by hand, the automatic jet car for cutting the lower chrysanthemum is run through the furrow passage. It is well known that a jet is jetted from a nozzle toward a Kikushita leaf, and the Kikushita leaf is cut off by the jet. Further, the nozzle is reciprocated in the up-down direction and the front-rear direction in order to apply the jet from the nozzle to the Kiku lower leaves from various directions and to cut down the lower leaves efficiently.

[0003] In a conventional automatic jet vehicle for cutting a Kikushita leaf, in order to achieve vertical movement of a nozzle, for example, a chain is rotated in the vertical direction by a motor, and the chain is vertically moved by a driving member which rotates integrally with the chain. A free moving member is vertically moved, and a nozzle integrally coupled to the moving member is vertically moved (for example, Japanese Patent Laid-Open No. 7-2847).
No. 05).

[0004]

In a general automatic jet car for cutting a Kikushita leaf, the frequency of the nozzle in the vertical direction is very large. Therefore, when the nozzle reverses the moving direction from descending to ascending, the inertial force due to the change in acceleration of the moving member acts as a motor load, and the gravity of the moving member and the like opposes from the direction cooperating with the motor driving force. The switching in the direction causes a temporary increase in the load on the motor, which has an adverse effect on the durability and the like of the motor.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vertical reciprocating drive device, a nozzle drive device, and an automatic spraying vehicle, which obtain vertical reciprocation by utilizing the vertical rotation of a revolving member. An object of the present invention is to reduce the burden and improve the durability of the driving means.

[0006]

The vertical reciprocating drive (10) of the present invention has the following elements (a) to (d). (A) a circulating member (23) that is driven by the driving means (16) and circulates in the vertical direction; (b) a moving member (26) that is freely movable in the vertical direction; and (c) circulates integrally with the circulating member (23) (24) (d) Upward urging means for urging the entraining member (24) upward by entraining the moving member (26) to reciprocate vertically.
(38)

The mode in which the entraining member (24) entrains the moving member (26) is such that a horizontal elongated hole is formed in the moving member (26), and the pin type entraining member (24) is inserted into the elongated hole. However, the present invention is not limited to the one that is movably inserted in the horizontal direction. In addition,
There is also a structure in which the upper and lower ends of the rod member are rotatably connected to a pin that orbits integrally with the orbiting member (23) and a moving member (26) that is guided in the vertical direction.

The orbiting member (23) orbits in the vertical direction by driving of the driving means (16). The entraining member (24) orbits integrally with the orbiting member (23) and entrains the moving member (26). This allows
The moving member (26) reciprocates vertically. When the entraining member (24) passes through the lowermost point of the orbiting member (23), the moving direction of the moving member (26) switches from downward to upward. Therefore,
As the upward acceleration of the moving member (26) increases, the gravity of the moving member (26) changes from the direction cooperating with the driving force of the driving means (16) to the opposite direction, and drives the moving member (26). The driving force required for this increases. Thus, the moving member (2
In the period in which the driving force required to drive 6) increases, the urging force of the upward urging means (38) acts to support the driving force of the driving means (16). means
(16) The size can be reduced, and the durability and life can be improved.

Another vertical reciprocating drive (10) of the present invention.
According to the above, the upward biasing means (38) is a coil spring (38) that increases the upward biasing force by increasing the amount of compression or tension as the amount of downward movement of the moving member (26) increases. is there.

The coil spring (38) is a compression spring or a tension spring, and is compressed or pulled as the moving member (26) moves downward to increase the upward biasing force. As a result, when the entraining member (24) passes through the lowermost end of the orbiting member (23), and the moving member (26) reverses the moving direction from the lower direction to the upper direction, the upward urging means (38) The upward biasing force on the moving member (26) is maximized. Thus, when the driving means (16) requires the greatest driving force, the urging force of the upward urging means (38) becomes maximum and assists the driving means (16), so that the upward urging The operation of the means (38) becomes efficient.

The nozzle driving device (10) of the present invention has the following elements (a) to (c). (A) a circulating member (23) that is driven by the driving means (16) and circulates in the vertical direction; (b) a moving member (26) that is freely movable in the vertical direction; and (c) circulates integrally with the circulating member (23) (24) (d) Upward urging means for urging the entraining member (24) upward by entraining the moving member (26) to reciprocate vertically.
(38) (e) Nozzle (58) that moves up and down integrally with moving member (26)

The orbiting member (23) orbits in the vertical direction by driving of the driving means (16). The entraining member (24) orbits integrally with the orbiting member (23) and entrains the moving member (26). This allows
The moving member (26) and the nozzle (58) reciprocate vertically.
When the entraining member (24) passes through the lowermost point of the orbiting member (23),
The moving direction of the moving member (26) and the nozzle (58) is switched from downward to upward. Therefore, the moving member (26) and the nozzle
(58) As the upward acceleration increases, the moving member (26)
And the gravitational force of the nozzle (58) becomes a direction opposite to the direction cooperating with the driving force of the driving means (16), and the driving force required to drive the moving member (26) and the nozzle (58) increases. . Thus, during the period in which the driving force required to drive the moving member (26) and the nozzle (58) increases, the urging force of the upward urging means (38) reduces the driving force of the driving means (16). Since it acts to assist, it is possible to reduce the size of the driving means (16) and to improve the durability and the life.

According to another nozzle driving device (10) of the present invention, the upward biasing means (38) increases the amount of compression or tension as the amount of downward movement of the moving member (26) increases. And a coil spring (38) for increasing the upward urging force.

The coil spring (38) is a compression spring or a tension spring, and is compressed or pulled as the moving member (26) moves downward to increase the upward biasing force. As a result, when the entraining member (24) passes through the lowermost end of the orbiting member (23), and the moving member (26) reverses the moving direction from the lower direction to the upper direction, the upward urging means (38) The upward biasing force on the moving member (26) is maximized. Thus, when the driving means (16) requires the greatest driving force, the urging force of the upward urging means (38) becomes maximum and assists the driving means (16), so that the upward urging The operation of the means (38) becomes efficient.

Another nozzle driving device (10) of the present invention further has the following elements (f) and (g). (F) meandering groove (56) extending in the vertical direction while meandering (g) movable member (26) which is rotatable around a vertical line and is inserted into meandering groove (56) at a portion different from the turning point The nozzle holding member (42) which moves up and down integrally with the nozzle and is attached with the nozzle (58) directed sideways.

The moving member (26) is vertically reciprocated by the driving means (16). Since the nozzle holding member (42) is vertically integrated with the moving member (26), the nozzle holding member (42) moves up and down as the moving member (26) moves up and down. Since the nozzle holding member (42) has a portion inserted into the meandering groove (56), the nozzle holding member (42) is forcibly swung around the vertical line in the meandering groove (56) with the vertical movement. As a result, the nozzle (58) swings back and forth. Since the meandering groove (56) can meander left and right instead of in the front-rear direction, the front-rear dimension of the nozzle driving device (10) can be reduced.

According to another nozzle driving device (10) of the present invention, the nozzle holding member (42) is provided with the rolling member (46) that rolls on the side edge of the meandering groove (56). Prepared for the insertion part to 56).

The rolling member (46) of the portion for inserting the nozzle holding member (42) into the meandering groove (56) rolls along the side edge of the meandering groove (56) with the vertical movement in the meandering groove (56). Move. This allows the meandering groove
The movement of the insertion portion of the nozzle holding member (42) in (56) becomes smooth.

The automatic spreading vehicle (70) according to the present invention is characterized in that:
6 is equipped with the nozzle driving device (10) according to any one of (1) to (6), and travels along the passage (78) to feed the crop (84) from the liquid (8)
Spray 2).

The automatic spraying vehicle (70) sprays the liquid (82) from the nozzle (58) when traveling on the passage (78). Nozzle (58)
During the spraying of the liquid (82), the crop (84) moves vertically and oscillates in the front-rear direction, so that the crop (84) extends over a predetermined range in the vertical direction and from various angles in the front-rear direction of the automatic spraying vehicle (70). ) Is sprayed.

Another automatic spraying vehicle (70) according to the present invention is equipped with the nozzle driving device (10) according to any one of claims 3 to 6, and travels along a passage (78) to move the nozzle (58). The lower leaves (86) of the chrysanthemum (84) are removed by the jet (82) from the water.

The automatic spraying vehicle (70) injects a jet (82) from the nozzle (58) when traveling on the passage (78). Nozzle (58)
Is moved up and down and swinging back and forth, so that the chrysanthemum (84) is hit with a jet (82) over a predetermined range in the up and down direction and from various angles in the back and forth direction of the automatic spraying truck (70), and the lower leaf ( 86) is reaped.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. 1 and 2 are a front view and a vertical sectional view of the nozzle driving device 10 as viewed from the side. The rectangular parallelepiped case 12 has an open front side. Drive sprocket 14 is a rectangular parallelepiped case
The constant-velocity motor 16 is disposed at an upper portion inside the rectangular case 12 at the same position as the drive sprocket 14 in the vertical direction.
The drive sprocket 14 is driven by an output shaft 18. The support shaft 22 is fixed to the rear wall of the rectangular parallelepiped case 12 below the output shaft 18, protrudes forward, and has a driven sprocket 20 rotatably mounted at its front end. The chain 23 is hung around the driving sprocket 14 and the driven sprocket 20, and the pin member 24 is attached to a position of the chain 23 and circulates integrally with the chain 23.

The vertical moving plate 26 has guide rollers on both sides of the upper end.
28 is rotatably mounted, and rolls the inner surfaces of the left and right side walls of the rectangular parallelepiped case 12 to guide the vertical moving plate 26 in the vertical direction.
The horizontal elongated hole 30 extends in the left and right horizontal direction at the upper part of the vertical moving plate 26, and the pin member 24 is inserted therethrough. The pin member 24 is
A ring (not shown) or the like is fastened so as not to fall out of the horizontal elongated hole 30. The pair of vertical rods 32 are floated from the front surface of the rear wall of the rectangular parallelepiped case 12 and arranged symmetrically, and are fixed to the rear wall of the rectangular parallelepiped case 12 by upper and lower brackets 34. The slider 36 is attached to the back side of the vertical moving plate 26 while holding the vertical rod 32 between the vertical moving plate 26 and the lower part of the vertical moving plate 26, and slides along the vertical rod 32, The lower part of the vertical moving plate 26 is guided in the vertical direction. The compression coil spring 38 is fitted to each of the vertical bars 32 between the slider 36 and the bracket 34, and urges the slider 36, and thus the vertical moving plate 26, upward. The vertical shaft 40 has its upper end fixed to the lower end on the front side of the vertical moving plate 26, and hangs in the vertical direction.

The nozzle holder 42 has a boss 44 at its rear end,
And a roller 46 at an intermediate portion, and protrudes forward from the vertical shaft 40. The boss portion 44 is rotatably fitted to the vertical shaft 40 around a center line of the vertical shaft 40, and is integrally formed with the vertical shaft 40 in a vertical direction by a retaining ring (not shown) or the like.
The roller 46 is rotatably attached to an intermediate portion of the nozzle holder 42. The nozzle pipe 48 is attached to the front end of the nozzle holder 42 at the center, has a hose connection port 50 on the front side, and extends in the left-right horizontal direction. Two nozzles 58 are provided at both left and right ends of the nozzle pipe 48, respectively.
However, it is attached to the side.

The pair of guide groove forming members 54 are fixed to the lower wall of the rectangular parallelepiped case 12 so as to sandwich the roller 46 from both left and right sides. The guide groove 56 is formed between the pair of guide groove forming members 54 and extends in the vertical direction while meandering left and right.
I will guide you.

The operation of the nozzle driving device 10 will be described. During operation, the constant speed motor 16 rotates the output shaft 18 at a substantially constant speed. As the output shaft 18 rotates, the chain 23 orbits between the driving sprocket 14 and the driven sprocket 20 in a predetermined direction. The pin member 24 circulates integrally with the chain 23, displaces in the horizontal elongated hole 30 in the horizontal direction relative to the horizontal elongated hole 30, and contacts the upper and lower side edges of the horizontal elongated hole 30. By the contact, the vertical moving plate 26 moves in the vertical direction. The vertical moving plate 26 reciprocates in the vertical direction due to the rolling of the guide roller 28 in the upper and left sides and the sliding of the lower slider 36 on the vertical rod 32. The vertical shaft 40 moves up and down integrally with the up and down moving plate 26 to entrain the boss 44 of the nozzle holder 42 in the up and down direction. The nozzle holder 42 moves along the guide groove 56 while rolling the roller 46 on the guide groove 56 as the nozzle holder 42 moves up and down. As a result, the nozzle holder 42 is swung around the vertical axis 40 by the roller 46. Thus, the nozzle 58 swings back and forth while moving up and down.

The compression coil spring 38 is compressed as the vertical moving plate 26 moves downward to increase the urging force of the vertical moving plate 26 in the upward direction. Pin member 24 is driven sprocket 20
During the period in which the pin member 24 passes through, the moving direction of the pin member 24 is reversed from the lower direction to the upper direction, so that the vertical moving plate 26 and the nozzle holder 4 integrally connected to the vertical moving plate 26 in the vertical direction.
2. An upward acceleration acts on the nozzle pipe 48, the nozzle 58, and the like (hereinafter, referred to as “the vertical moving plate 26, etc.”). Also, the gravity of the vertical moving plate 26 and the like is in the same direction as the entraining force of the pin member 24 when the pin member 24 moves downward,
When the pin member 24 moves upward, the direction is opposite to the entrainment force of the pin member 24. Accordingly, the inertial force of the vertical moving plate 26 and the like due to the increase in the upward acceleration and the gravity of the vertical moving plate 26 and the like are added to act on the pin member 24 as a downward force. The compression coil spring 38 shares the upward force on the pin member 24 when the moving direction of the vertical moving plate 26 and the like reverses with the constant-speed motor 16, so that the load on the constant-speed motor 16 is reduced accordingly. .

The compression coil spring 38 also increases the amount of compression as the vertical moving plate 26 descends, increases the upward urging force exerted on the vertical moving plate 26, and moves the compression coil spring 38 downward in the vertical direction. The compression coil spring 38 generates a maximum urging force in the upward direction when the moving direction is reversed in the upward direction, that is, when the pin member 24 requires the largest driving force. Therefore, the compression coil spring 38 suppresses the generation of a large upward biasing force when the vertical moving plate 26 descends, while the compression coil spring 38 moves when the moving direction of the vertical moving plate 26 is reversed from below to above. By doing so, the burden on the constant-speed motor 16 is reduced.

FIG. 3 is a view showing a working state of the automatic jet car 70 for cutting the Kikushita leaves equipped with the nozzle driving device 10. The body 72 of the automatic jet car 70 for cutting Kikushita leaves has tires
74, at least two of the tires 74 in the front-rear direction are driving wheels. The liquid supply hose 76 can be freely wound around a hose reel (not shown) in the main body 72, and is drawn out from a lower portion of the main body 72 to supply high-pressure water from the pressure supply pump to the automatic jet vehicle 70 for cutting the Kikushita leaf. Supply. The nozzle pipe 48
To the hose connection port 50 (FIGS. 1 and 2).
The other hose connected to the end of the pump is connected, and the high-pressure water from the pumping pump is supplied from the liquid sending hose 76 to the nozzle pipe 48 through the further another hose, and finally to the nozzle pipe 48. ing. The furrow passage 78 is interposed between the furrows 80, and has a width that allows the automatic jet vehicle 70 for cutting Kikushita leaves to run. A jet 82 is jetted from the left and right nozzles 58,
The chrysanthemum 84 on the ridge 80 is applied with the jet 82 from the nozzle 58 to the lower leaf 86, and the lower leaf 86 is cut off. Jet from nozzle 58
During the injection of 82, the nozzle 58 swings up and down while moving up and down, so the chrysanthemum 84
The jet 82 is applied to the jet 86 and the jet 82 is applied from various angles in the front-rear direction of the automatic jet car 70 for cutting the lower leaves, so that the lower leaves 86 are reliably cut off.

[Brief description of the drawings]

FIG. 1 is a front view of a nozzle driving device.

FIG. 2 is a vertical sectional view of the nozzle driving device as viewed from a side.

FIG. 3 is a view showing a working state of an automatic jet vehicle for cutting a Kikushita leaf equipped with a nozzle driving device.

[Explanation of symbols]

Reference Signs List 10 Nozzle driving device (vertical reciprocating driving device) 16 Constant velocity motor (driving means) 23 Chain (circulating member) 24 Pin member (entraining member) 26 Vertical moving plate (moving member) 38 Compression coil spring (upward urging means) , Coil spring), 42 Nozzle holder (nozzle holding member) 46 Roller (rolling member) 56 Guide groove (meandering groove) 58 Nozzle 70 Automatic jet car for cutting Kikushita leaves (automatic spraying car) 78 Passage between ridges (passage) 82 Jet (liquid) 84 Chrysanthemum (crop) 86 Lower leaf

Claims (8)

(57) [Claims] 1. A (a) orbiting member (23) that is driven by a driving means (16) and circulates in a vertical direction, (b) a moving member (26) that is movable in a vertical direction, (c) the circulating member Members (23)
A driving member (24) for revolving integrally with the moving member (26) to reciprocate in the vertical direction, and (d) the driving member (2
4) An up-down reciprocating drive device comprising upward biasing means (38) for biasing 4) upward. The upward biasing means (38) includes a coil spring (38) for increasing the upward biasing force by increasing the amount of compression or tension as the amount of downward movement of the moving member (26) increases. 38. The vertical reciprocating drive according to claim 1, wherein: (A) a circling member (23) that is driven by a driving means (16) and circulates in a vertical direction; (b) a moving member (26) that is movable in a vertical direction; Members (23)
An energizing member (24) for encircling the moving member (26) and reciprocating vertically in the vertical direction, and (d) an upward urging means (38) for urging the entraining member (24) upward. And (e) a nozzle driving device comprising a nozzle (58) that moves up and down integrally with the moving member (26). 4. The upward biasing means (38) includes a coil spring (38) for increasing the upward biasing force by increasing the amount of compression or tension as the amount of downward movement of the moving member (26) increases. 38. The nozzle driving device according to claim 3, wherein: 5. A meandering groove (56) extending in the vertical direction while meandering, and (g) a meandering groove (56) rotatable around a vertical line and at a position different from a turning point. A nozzle holding member (42), which is inserted into the moving member (26), moves up and down integrally with the moving member (26), and is attached with the nozzle (58) directed sideways, and the meandering groove (56) is The vertical movement of the nozzle holding member (42)
Accordingly, while moving the nozzle (26) up and down,
The nozzle driving device according to claim 3, wherein the nozzle driving device is provided so as to swing . 6. The nozzle holding member (42) is provided with the meandering groove.
Rolling member (46) that rolls on the side edge of (56) is inserted into the meandering groove (5).
6. The nozzle driving device according to claim 5, wherein the nozzle driving device is provided in an insertion portion to (6). 7. A crop (84) equipped with the nozzle driving device (10) according to any one of claims 3 to 6, running on a passage (78).
An automatic spraying vehicle, which sprays the liquid (82) from the nozzle (58). 8. A chrysanthemum (84) which is equipped with the nozzle driving device (10) according to any one of claims 3 to 6 and travels through a passage (78) and is jetted from the nozzle (58) by a jet (82). ) An automatic spraying vehicle characterized by removing lower leaves (86).