JP2006213482A - Mud dropping device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mud dropping device having excellent durability and workability and high mud dropping efficiency. <P>SOLUTION: In this mud dropping device 10 to remove mud, etc. adhered to the surface of a hose 18, a four-joint link mechanism is constituted of a guide plate 42 for delivering the hose 18, an upper part stay 48, a lower part stay 52 and a link plate 58. At distal end parts of the upper part stay 48 and the lower part stay 52, upper part and lower part rollers 60 and 62 are mounted. The hose 18 is passed between the rollers 60 and 62. When delivering the hose 18, the hose 18 pushes the upper roller 60 to widen a space between the rollers 60 and 62. When taking up the hose 18, the hose 18 conversely pushes the lower part roller 62, the space between the rollers 60 and 62 is narrowed, and the hose 18 is caught between the rollers 60 and 62 to remove mud, etc. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a mud removing device for removing mud, dust, and the like attached to a hose, wire, cable, or other long object.

  For example, in a power spraying device for spraying chemicals and water on agricultural products via a hose, a mud dropping device is provided to remove mud and dust adhering to the hose when the hose is wound around a hose winding drum. There is something. As a conventional mud dropping device, what is indicated by the following patent documents 1-3 is known.

  The mud removing apparatus described in Patent Documents 1 and 2 basically includes a brush, and when the hose passes through the brush, mud or the like on the hose surface can be scraped off.

Moreover, the mud dropping device described in Patent Document 3 uses a cylindrical coil-shaped guide provided to guide the hose. When the hose is wound around the hose winding drum through the coiled guide, mud or the like adhering to the hose surface is scraped off by the contact portion of the guide.
Japanese Patent Laid-Open No. 5-23087 Japanese Utility Model Publication No. 3-30383 JP 2002-332167 A

  Since the conventional mud dropping device described in Patent Documents 1 and 2 described above has a structure in which the brush is always in contact with the hose, the brush is clogged at an early stage due to mud, and the effect of removing mud and the like is reduced. There is a problem of doing. Further, in such a clogged state, the hose is subjected to a large resistance from the brush even when the hose is sent out, which places a burden on the operator. Furthermore, many brushes are made of resin, so that they have poor durability and are easily deformed.

  On the other hand, in the mud dropping device described in Patent Document 3, since the removed mud or the like falls from the gap between the coiled guides, there is no problem of clogging. Moreover, in order to reduce the resistance caused by contact with the hose, the inner diameter of the coiled guide is made larger than the outer diameter of the hose. For this reason, it is not possible to remove mud etc. adhering to the entire circumference of the hose. There is. For example, mud etc. can be removed only on the lower surface of the hose. Further, although the durability of the coiled guide is high, when the mud is abrasive, the coiled guide may be worn and broken. In such a case, it is necessary to replace the coiled guide, but since the coiled guide is attached in a state of surrounding the hose, it is not after removing the nozzle at the tip of the hose and pulling out the hose from the guide, It cannot be exchanged and takes time.

  Therefore, an object of the present invention is to provide a mud dropping device that can solve the above-described conventional technical problems.

  In order to achieve the above object, according to the present invention, in the mud dropping device (10) for removing mud and the like adhering to the surface of a long object (18) such as a hose, a wire, a cable, A first stay (48) having one end pivotally supported on the base (42) and a first roller (60) attached to the other end; and one end pivoted on the base (42) and the other end A second stay (52) having a second roller (62) attached to the first stay (48) and the second stay (52). A link plate (58) constituting a four-bar linkage mechanism in cooperation with the stay (48) and the second stay (52), and the long object (18) is connected to the first roller (60) and the second stay (52). Between the two rollers (62) and the long object (18) is fed. When unloaded, the elongated object (18) pushes the first roller (60) to increase the distance between the first roller (60) and the second roller (62), and When the long object (18) is pulled back, the long object (18) pushes the second roller (62), and the first roller (60) and the second roller (62) approach each other. The four parts comprising the base (42), the first stay (48), the second stay (52) and the link plate (58) so as to sandwich the long object (18) between the rollers (60, 62). It is characterized by a knot link mechanism.

  In this configuration, since the long object (18) is sandwiched between the first and second rollers (60, 62) when the long object (18) such as a hose is pulled back, these rollers (60, 62). The mud etc. on the long object (18) are removed by the rotational force. Further, since the second roller (62) is separated from the first roller (60) when the long object (18) is sent out, the resistance applied to the long object (18) is very small.

  When the first roller (60) and the second roller (62) come close to each other and the long object (18) is sandwiched between the two rollers (60, 62), the second roller (62) On the other hand, it is preferable that the four-link mechanism is configured such that the position of the first roller (60) is shifted in the longitudinal direction of the long object (18). This misalignment can prevent the rollers (60, 62) from coming into contact with each other, and the long object (18) is uniformly sandwiched to enhance the effect of removing mud and the like. In this configuration, it becomes easy to cope with replacement with a roller having a different size or replacement with a hose having a different diameter.

  Further, the long object (18) is removed from the first roller (60) and / or the second roller (62) between the first stay (48) and the second stay (52). It is recommended to provide a link stay to prevent this.

  As described above, according to the present invention, a long object (18) such as a hose can be sandwiched between the rollers (60, 62) at the time of winding to remove mud on the surface. Since the rollers (60, 62) are used, the durability is excellent and mud and the like adhering to the rollers (60, 62) can be dissipated by centrifugal force, so that they adhere to and accumulate on the mud dropping device (10). Can also be prevented.

  Further, when the long object (18) such as a hose is delivered, the distance between the rollers (60, 62) becomes large, so that the long object (18) is not resisted and workability is improved.

  Furthermore, since it has a four-bar link structure, it can be easily assembled and disassembled, and is excellent in terms of maintenance management.

  Moreover, since it is a simple structure which consists of a roller (60, 62), a stay (48, 52, 68), and a link plate (58), size reduction is also possible.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the same or corresponding parts are denoted by the same reference numerals throughout the drawings. Further, the terms indicating the directions such as “up” and “down” in the present specification are words based on a state in which the apparatus according to the present invention is properly installed on a horizontal plane.

  FIG. 1 is a side view showing an embodiment of a power spray device 12 to which a mud dropping device 10 according to the present invention is applied. The power spray device 12 is for spraying chemicals such as agricultural chemicals, and in this embodiment, the power spray device 12 can be driven by the driving force of the engine 14.

  A pump 20 that sucks a chemical solution from a separately prepared chemical solution tank and pumps it to the hose 18 is fixed to the frame 16 of the power spray device 12. The driving force for the pump 20 is transmitted from the output shaft of the engine 14 via the belt 22. Therefore, when the engine 14 is operated and the pump 20 is driven, the chemical liquid is sprayed from a nozzle (not shown) through the hose 18.

  The hose 18 is wound around a hose winding drum 24 that is rotatably attached to the frame 16. By pulling the hose 18, the hose 18 having a necessary length can be pulled out from the hose winding drum 24. . The driving force of the engine 14 is transmitted to the rotating shaft of the hose winding drum 24 via the belts 26 and 28 and the transmission 30 so that the hose winding drum 24 is rotationally driven in the winding direction of the hose 18. .

  Further, the power spray device 12 is provided with a hose delivery device 32 that applies a delivery force to the hose 18 in order to reduce the force required to draw out the hose 18 from the hose winding drum 24. .

  The hose delivery device 32 has a delivery roller 34 rotatably attached to the frame 16 at a position above the hose winding drum 24 so as to be parallel to the horizontal rotation axis of the hose winding drum 24. Yes. The feed roller 34 is in contact with the hose 18 extending substantially upward in the vertical direction from the hose winding drum 24 and rotates to apply a feed force to the hose 18. The feed roller 34 is connected to the output shaft of the transmission 30 via a chain 36 and is driven to rotate by driving the engine 14.

  The hose delivery device 32 according to the present embodiment further includes a hose guide 38 disposed above the delivery roller 34. As clearly shown in FIG. 2, the hose guide 38 includes a base 40 provided on the upper portion of the frame 16 and a pair of guide plates (base portions) 42 attached so as to extend obliquely upward with respect to the base 40. ing. The hose 18 that has passed through the feed roller 34 passes through the base 40 and is guided between the guide plates 42. Between the guide plates 42, guide rollers 44 and 46 for receiving and guiding the hose 18 are disposed at the proximal end portion and the distal end portion, respectively.

  A mud dropping device 10 according to the present embodiment is provided at the tip of the hose guide 38. As shown in FIGS. 2 to 4, the mud dropping apparatus 10 is provided with an upper stay (first stay) pivotally supported at the upper end of each guide plate 42 so that one end can swing in the vertical direction. 48). In the present embodiment, these upper stays 48 are integrated by a tie plate 50.

  Further, at the lower end of each guide plate 42, one end of a lower stay (second stay) 52 is pivotally supported at a position below the upper stay 48 so as to be swingable in the vertical direction. . Each lower stay 52 is pivotally supported at both ends of a bolt 54 that supports the guide roller 46. Note that these lower stays 52 are also integrated by a tie plate 56 in the same manner as the upper stay 48.

  The overall lengths of the upper stay 48 and the lower stay 52 are substantially the same and extend in the hose delivery direction. An upper end portion and a lower end portion of the link plate 58 are pivotally supported by the intermediate portion of the upper stay 48 and the intermediate portion of the lower stay 52, respectively. The length from the pivot point P1 between the upper end portion of the link plate 58 and the upper stay 48 to the pivot point P2 between the upper stay 48 and the guide plate 42 is the lower end portion of the link plate 58 and the lower stay 52. The length from the pivot point P3 between the lower stay 52 and the guide plate 42 to the pivot point P4 between the lower stay 52 and the guide plate 42 is shorter. For this reason, in the four-bar linkage mechanism composed of the guide plate 42, the upper stay 48, the lower stay 52, and the link plate 58, when the upper stay 48 is swung, the lower stay 52 swings following the swing. The angle is smaller than the swing angle of the upper stay 48.

  An upper roller (first roller) 60 and a lower roller (second roller) 62 are rotatably mounted between the tips of the upper stays 48 forming a pair and between the tips of the lower stays 52 forming a pair, respectively. It has been. A semicircular or U-shaped groove is formed on the outer peripheral surfaces of the upper roller 60 and the lower roller 62, and the radius of this groove (the width in the case of the U-shaped groove) is 1 / out of the outer diameter of the hose 18. 2 substantially matches.

  As can be understood from FIGS. 3 and 4, the distance between the upper roller 60 and the lower roller 62 is larger than the outer diameter of the hose 18 in the state where the upper stay 48 is lifted to near horizontal. In the state where the lower stay 52 is lowered, the outer diameter of the hose 18 is equal to or smaller than that. Such a change in the interval is due to the effect of the four-bar linkage mechanism described above.

  Further, a link stay 68 is attached between each end portion of the bolt 64 supporting the upper roller 60 and a corresponding end portion of the bolt 66 supporting the lower roller 62. The upper portion of the link stay 68 is supported so as to be rotatable only with respect to the bolt 64. On the other hand, a long hole 70 is formed in the lower part of the link stay 68, and a bolt 66 of the lower roller 62 is passed through the long hole 70. By using the elongated hole 70, it is possible to absorb the variation in the distance between the tip of the upper stay 48 and the tip of the lower stay 52.

  The hose 18 guided by the hose guide 38 is passed between the upper and lower stays 48 and 52 and the link plate 58, and further passed between the upper and lower rollers 60 and 62 and between the link stays 68. In this case, the link stay 68 functions to prevent the hose 18 from falling off the upper and lower rollers 60 and 62.

  In such a configuration, when the engine 14 is started and the feed roller 34 is driven to rotate and the hose 18 is sent out from the hose winding drum 24, the hose 18 moves substantially upward in the vertical direction, and the direction of the hose 18 is reduced by the hose guide 38. It changes in the horizontal direction and is sent to the worker. While the hose 18 is being fed, the portion of the hose 18 supported between the guide rollers 44 and 46 tends to be fed from the tip of the hose guide 38 in an obliquely upward state due to inertia. In this state, the hose 18 comes into contact with the upper roller 60 of the mud dropping device 10 and tries to push it upward. For this reason, as shown in FIG. 3, the upper stay 48 is lifted to near horizontal. At this time, the lower stay 52 also rises following the link plate 58. However, as described above, the amount of rise of the tip of the lower stay 52 is small, and the hose 18 contacts only the upper roller 60. Accordingly, the force that the hose 18 receives from the mud dropping device 10 is only the reaction force from the upper roller 60. However, since the upper roller 60 is rotatable, the resistance applied when the hose 18 is delivered is extremely small. Can pull out the hose 18 smoothly.

  When the hose 18 is pulled back to the power spray device 12 side, the hose winding drum 24 is rotationally driven in the winding direction by the driving force of the engine 14. Thereby, the hose 18 is wound around the hose winding drum 24. At this time, since the hose 18 is dragged by the ground and receives tension, the hose 18 is generally in a mountain shape with the guide roller 46 as a vertex (see the two-dot chain line in FIGS. 4 and 1). As a result, the hose 18 comes into contact with the lower roller 62 and pushes down the lower roller 62. When the tip of the lower stay 52 is lowered, the upper stay 48 also swings downward following this, but the swing angle is larger than that of the lower stay 52 so that the upper roller 60 approaches the lower roller 62. As shown in FIG. 5, the hose 18 is sandwiched between the upper and lower rollers 60 and 62. In this state, since the semicircular or U-shaped groove is formed on the outer peripheral surface of each roller 60, 62, the entire circumference of the hose is fitted in the groove of the upper and lower rollers 60, 62. .

  If the winding of the hose 18 is continued, mud, dust and the like adhering to the surface of the hose 18 are blown off by the rotation of the upper and lower rollers 60 and 62 sandwiching the hose 18 and removed. Since the upper and lower rollers 60 and 62 surround the entire circumference of the hose 18, mud and the like adhere to the hose 18 and are efficiently removed.

  In this embodiment, since the lower roller 62 is positioned slightly forward (longitudinal direction of the hose 18) than the upper roller 60, the upper and lower rollers 60 and 62 do not interfere with each other and restrain their movement. . This enhances the efficiency of removing mud and the like by the rollers 60 and 62 sandwiching the hose 18 uniformly. Further, by shifting the positions of the rollers 60 and 62, it becomes easy to replace rollers having different sizes or to hoses having different diameters.

  Mud also adheres to the rollers 60, 62, but since this is blown away by the centrifugal force generated by the rotation of the rollers 60, 62 themselves, mud etc. will not accumulate in the mud dropping device 10. The hose 18 from which mud or the like has been dropped is wound around the hose winding drum 24 through the hose guide 38 as it is.

  The rollers 60 and 62 rotate and can be made of metal or the like. Therefore, the rollers 60 and 62 are excellent in durability. However, when used for a long period of time, the upper and lower rollers 60 and 62 are worn and the mud removing effect is lowered. Sometimes. In this case, since the mud dropping device 10 is located at the tip of the power spraying device 12, the state of the rollers 60 and 62 can be easily determined. Further, since the rollers 60 and 62 can be removed simply by removing the bolts 64 and 66, the replacement is extremely easy. Since the entire mud dropping device 10 can be disassembled only by removing the bolts, it is also effective in terms of maintenance management.

  As mentioned above, although preferred embodiment of this invention was described in detail, it cannot be overemphasized that this invention is not limited to the said embodiment.

  For example, although the said embodiment was taken for removing mud etc. from the hose of the power spray apparatus for agriculture, this invention is applicable also to other elongate objects, such as a wire and a cable.

It is a side view which shows the state by which the mud dropping apparatus by this invention was applied to the power spraying apparatus. It is a disassembled perspective view which shows the structure of the mud dropping apparatus by this invention in detail. It is sectional drawing of the mud dropping apparatus by this invention, and is a figure which shows the state at the time of hose delivery. It is a side view of the mud dropping device by this invention, and is a figure which shows the state at the time of hose winding-up.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Mud drop device 12 ... Power spray device 38 ... Hose guide 42 ... Guide plate (base part)
44, 46 ... guide roller 48 ... upper stay (first stay)
52 ... Lower stay (second stay)
58 ... Link plate 60 ... Upper roller (first roller)
62 ... Lower roller (second roller)
68 ... Link stay.

Claims (3)

A mud dropping device (10) for removing mud adhering to the surface of a hose, wire, cable or other long object (18),
A base (42);
A first stay (48) having one end pivotally supported on the base (42) and a first roller (60) attached to the other end;
A second stay (52) having one end pivotally supported by the base (42) and a second roller (62) attached to the other end;
Mounted between the first stay (48) and the second stay (52) and cooperates with the base (42), the first stay (48) and the second stay (52). And a link plate (58) constituting a four-bar linkage mechanism,
The elongated object (18) is arranged between the first roller (60) and the second roller (62);
When the long object (18) is sent out, the long object (18) pushes the first roller (60), and the first roller (60) and the second roller (62). And when the elongated object (18) is pulled back, the elongated object (18) pushes the second roller (62), and the first roller (60) and the second roller (62) approach each other so that the long object (18) is sandwiched between the rollers (60, 62). (48) A mud dropping device in which a four-bar linkage mechanism including the second stay (52) and the link plate (58) is configured.   When the first roller (60) and the second roller (62) approach each other and sandwich the elongated object (18) between the two rollers (60, 62), the second roller ( 62) so that the position of the first roller (60) is displaced in the longitudinal direction of the long object (18), the base (42), the first stay (48), and the second stay. The mud dropping device according to claim 1, wherein a four-bar linkage mechanism comprising the link plate (52) and the link plate (58) is configured. Between the first stay (48) and the second stay (52), the long object (18) from the first roller (60) and / or the second roller (62) The mud dropping device according to claim 1 or 2, further comprising a link stay (68) for preventing the falling off.

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