JP5572816B2 - Cart-type drug spraying device - Google Patents

Description

  The present invention relates to a cart-type drug spraying device configured by combining a cart and a drug spraying basket with a spray nozzle.

  Introducing a cart-type medicine spraying device used for spraying insecticides, etc., with a standing support frame on a cart with wheels and a handle and attaching a medicine spraying bowl to the support frame There is a cart type medicine spraying device. As a conventional example of the cart type medicine spraying device, for example, there is one as shown in Patent Document 1 below.

  This cart-type medicine spraying device can be said to be a simple-type medicine spraying vehicle, and is constructed from a medicine spraying basket that is pushed out and moved by an operator and is extended to at least one side of the support frame of the device. The medicine is sprayed on the cultivated plants.

  In order to make the spray height of the medicine variable, this cart-type medicine spraying device is attached so that the medicine spraying basket can be raised and lowered with respect to the support frame where the device stands up and can be fixed at each raising and lowering position. Yes.

  The drug spreader is raised and lowered by a method in which a slider is attached to a support frame of the apparatus, a drug spreader is attached to the slider, and the slider is raised and lowered by hand. In addition, the drug spreader is fixed at each position of raising and lowering by a method in which a set screw for engaging and disengaging the support frame is attached to the slider and the slider is fixed to the support frame by operating the set screw. Is going.

JP 2001-149832 A

  As described above, the conventional cart-type medicine spraying device raises and lowers the slider supported by the support frame by hand, and then fixes the slider to the support frame with a set screw to bring the medicine spray basket into the height adjustment position. However, in this method, when the set screw is loosened, the drug sprinkling basket sometimes slides down with the slider.

  The slider with the chemical spreader is relatively heavy, and it is necessary for the operator to support the slider with one hand, maintain this state, and operate the set screw with the other hand. It is not easy to support, and for this reason, the medicine sprayer sometimes slides down with the slider.

  Since the drop is accompanied by an impact, it may cause a breakage of the drug spraying bowl and is not preferable.

  Accordingly, the present invention is to make it possible to easily and reliably raise and lower the drug spreader of the cart type drug spreader to a target height position in order to prevent an unexpected drop when adjusting the height of the drug spreader. Is an issue.

  In order to solve the above-described problems, in the present invention, a cart-type drug spraying device provided with a support frame standing on a cart having wheels and a handle and attached to the support frame so as to project a drug spraying basket to the side. The following features were given.

  Specifically, a position-fixed gear case provided on the support frame, a lower slider and an upper slider that are attached to the support frame so as to be movable up and down above and below the gear case, a pinion that is rotatably supported by the gear case, and a rotational drive that rotates the pinion Means, a latch claw that can be disengaged that engages with the pinion and prevents the pinion from rotating at each position of rotation, and a movable part that vertically spans between the lower slider and the upper slider to engage the pinion. The rack and a slide resistance applying means for applying a slide resistance to the movable rack are provided, and the medicine sprayer is attached to either the lower slider or the upper slider.

  The rotation driving means is preferable because a hand-operated handle does not require a power source and an increase in the cost of the apparatus is suppressed, but is not limited to a manual type.

  The slide resistance applying means is sandwiched between a push pin having an operation knob, a first wedge pushed and pulled by the push pin in a direction perpendicular to the axis of the push pin, and the first wedge and the movable rack. It is preferable that the movable rack is composed of a second wedge that applies a frictional force to the movable rack.

The one having the preferred slide resistance applying means is more preferable as a result of the guide action of the helical cam surface provided at the tip while being pushed by the push pin and moving in the axial direction on the outer periphery of the push pin. A sleeve that rotates on the push pin is fitted, and the latch claw is integrally provided on the sleeve, and when the push pin moves in the slide resistance application direction to the rack by the slide resistance application means, the latch claw and the sleeve together with the sleeve The latch claw can be disengaged from the pinion by rotating in a certain direction.

  The cart type medicine spraying device of the present invention is provided with a movable rack that moves up and down integrally with a slider and a pinion provided with a rotation driving means for meshing with the movable rack, and a latch claw is engaged with the pinion, and the latch claw for the pinion As long as the engagement is not intentionally released, the drug sprinkler tub attached to the slider is securely held in the height adjustment position.

  Also, a slide resistance applying means is provided to provide the movable rack with a slide resistance. By appropriately setting the slide resistance applied to the movable rack, the descent speed of the movable rack is controlled, and the latch claw engagement with the pinion is controlled. Even when the agreement is solved, it is possible to prevent a sudden drop of the slider and the medicine sprayer.

  The slide resistance applying means is sandwiched between a push pin having an operation knob and a wedge surface, a first wedge that is pushed by the wedge surface of the push pin, and the first wedge and the movable rack. The structure composed of the second wedge for applying a frictional force to the rack has a simple structure, is inexpensive, and is easy to assemble.

  Further, a sleeve having a spiral cam surface is fitted on the outer periphery of the push pin so as to be relatively rotatable, and a latch claw is integrally provided on the sleeve, and the push pin is provided with resistance to the rack by the slide resistance applying means. When the latch claw rotates with the sleeve so that the latch claw is disengaged from the pinion when it is moved in the direction of movement, the latch claw engages and disengages from the pinion by pushing and pulling the push pin. The slide resistance can be applied to and released from the rack. In addition, in this structure, the slide resistance is applied to the rack at the same time as the latch pawl is disengaged, so that the slider and the medicine spray basket are more reliably prevented from falling when the latch pawl is disengaged. To be made.

The perspective view which shows one form of the cart type chemical | medical agent spraying apparatus of this invention The perspective view which shows the gear case installation part of the cart type | formula chemical spraying apparatus of FIG. 1 in the state which removed the rear wall of the gear case. Sectional view along the horizontal plane of the gear case installation part Sectional drawing which shows the state which the 1st wedge of the slide resistance provision means moved to the slide resistance provision position from the position of FIG. Sectional drawing of the position along the VV line of FIG. The perspective view which shows the inner surface side of the front part wall of the sleeve which has a latching nail | claw, and a gear case The perspective view which shows the state which inserted the sleeve which has a latching claw into the hole with a level difference part of the front part wall of a gear case Front view showing the gear case with the rear wall and first and second wedges removed. Front view showing a state where the rear wall of the gear case and the first and second wedges are removed, showing the state where the pinion detent by the latch claw is released Front view of the main part showing the state where the lower slider with the drug sprinkler is in the raised position Front view of the main part showing a state in which the lower slider attached with the medicine sprinkler is lowered from the position of FIG.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a cart-type drug spraying device according to the present invention will be described below with reference to FIGS.

  As shown in FIG. 1, the cart-type drug spraying device of the present invention includes a cart 1 and a drug spraying basket 6. The cart 1 includes a wheel 2 and a handle 3 and a stand 4 that an operator grasps and pushes by hand.

  A support frame 5 is provided upright on a machine frame to which the wheels of the cart 1 are attached, and a medicine sprinkler 6 is attached to the support frame 5 so as to protrude sideways. In addition, the example apparatus considers the side with the medicine sprinkler 6 as the front and the side with the stand 4 as the rear with the support frame 5 as a boundary.

  The support frame 5 is formed by connecting two poles side by side in parallel. The handle 3 is connected to the lower part of the support frame 5, and the support frame 5 is connected to the lower end of the support frame 5. A stand 4 is attached which contacts the ground when tilted to the side of 3 and supports the device at three points together with two wheels.

  Further, a position-fixed gear case 7 is provided in the middle of the support frame 5 in the height direction. Further, a lower slider 8 is attached to the support frame 5 below the gear case 7, and an upper slider 9 is attached to the support frame 5 above the gear case 7 so as to be movable up and down.

  On both sides of the lower slider 8, two rod-like support arms 10 that extend horizontally to the left and right are coupled so as to be able to stand up using a support shaft 11 that serves as a rotation fulcrum, and to the two support arms 10. Each of the drug spraying baskets 6 is attached and supported.

  The drug sprinkling tub 6 is a well-known tub in which a plurality of spray nozzles 6b are attached to the jet tube 6a at appropriate intervals in the jet tube longitudinal direction.

  12 is a suspension in which an upper end is detachably attached to the upper slider 9 using a thumbscrew or the like, and a lower end is pivotally connected to a connection fitting 13 attached in the middle of the longitudinal direction of the support arm 10. Below link.

  Since the illustrated chemical spraying basket 6 is long, the suspension link 12 is provided to improve the support stability of the basket. However, the hanging link 12 may be omitted if the chemical spraying basket 6 is short. The support arm 10 is also a preferable element, and it is only preferable in terms of storage and transportation of the apparatus that the medicine sprinkler 6 can be raised when not in use.

  The gear case 7 is formed by connecting the rear wall 7a and the front wall 7b, which are separately formed, with bolts 7c and hugging the pole of the support frame 5. The upper and lower ends of the case are open. A pinion 14 is incorporated in the gear case 7 so as to be rotatable at a fixed position, and further, a latch claw 15 described later, a spring 16 for applying a biasing force in a direction to mesh with the pinion 14 to the latch claw, and a slide resistance application Means 17 are incorporated.

  As shown in FIG. 3, the pinion 14 is fixed to a rotating shaft 18 supported by the gear case 7. A rotation drive portion (a hand-held handle in the figure) 19 is attached to the projecting portion of the rotation shaft 18 from the gear case 7, and the pinion 14 is rotated by a rotation operation of the rotation drive portion 19. .

  A movable rack 20 extends vertically through the gear case 7 between the lower slider 8 and the upper slider 9, and the pinion 14 meshes with the movable rack 20 as shown in FIG. It has been.

  The slide resistance applying means 17 is sandwiched between a push pin 21, a first wedge 22 that is pushed and pulled by the push pin 21 in the left-right direction perpendicular to the axis of the push pin, and the first wedge 22 and the movable rack 20. And a second wedge 23 for applying a frictional force to the movable rack 20.

  Details of the positional relationship between the push pin 21, the first wedge 22, the second wedge 23, the pinion 14 and the rack 20 are shown in FIGS. 2, 3, and 8.

  As shown in FIG. 3, the push pin 21 penetrates the gear case 7 in the front-rear direction, and operation knobs 21 a are provided at both ends of the push pin 21 protruding to the outside of the gear case 7. A tapered surface 21b and a convex portion 21c are provided on the outer periphery of the first wedge 22 so as to be in contact with the inclined surfaces 22a and 22b provided on the first wedge 22, respectively. Further, a latch claw 15 is mounted on the outer periphery of the push pin 21 so as to be relatively rotatable.

  The tapered surface 21b and the convex portion 21c are formed on the sleeve 24 by fitting a sleeve 24 to the outer periphery of the push pin 21 (see FIGS. 3 and 6) from the viewpoint of assembly.

  The latch claw 15 is integrally formed on the outer periphery of a sleeve 25 (see FIGS. 3 and 6) that is fitted on the outer periphery of the push pin 21 so as to be relatively rotatable, and rotates by the force of the spring 16 as shown in FIG. The pinion 14 is engaged and the pinion 14 is prevented from rotating.

  A spiral cam surface 25 a shown in FIG. 6 is provided at the tip of the sleeve 25. The cam surface 25a is engaged with a stepped portion 7d (see FIG. 6) of a hole provided in the front wall 7b of the gear case 7, and when the sleeve 25 is pushed forward in the axial direction, the cam surface 25a is twisted. As a result, the sleeve 25 rotates with the latch claw 15.

  The rotation direction of the latch claw 15 at that time is the direction to release from the pinion 14 against the force of the spring 16, and therefore the push pin 21 is pushed forward to release the rotation of the pinion 14 by the latch claw 15. can do.

  Further, when the push pin 21 is pushed forward, the first wedge 22 is pushed by the tapered surface 21b and slides to the left as shown in FIG. 4, and the second wedge 22 and the movable rack 20 are moved between the second wedge 22 and the movable rack 20. A sliding resistance is applied to the movable rack 20 by a frictional force generated between the second wedge 23 and the movable rack 20 when the wedge 23 is sandwiched.

  Therefore, when the detent of the pinion 14 by the latch claw 15 is released, the movable rack 20 receives a slide resistance. For this reason, the movable rack 20 does not drop rapidly and is attached to the lower slider 8. The fall with the impact of the used chemical | medical agent spraying apparatus is prevented reliably.

  As shown in FIG. 5, the first wedge 22 and the second wedge 23 are accommodated in a guide groove 7 e provided on the inner surface of the rear wall 7 a of the gear case 7, and movement in the vertical direction is restricted.

  In the cart type medicine spraying device of the present invention configured as described above, when the push pin 21 is moved forward, the pinion 14 is prevented from rotating by the latch pawl 15 as shown in FIG. 9, and at the same time as shown in FIG. In addition, the slide resistance applying means 17 is actuated to apply the slide resistance to the movable rack 20.

  In this state, when the rotation drive unit (handle) 19 is now rotated in the counterclockwise direction in FIG. 10, as shown in FIG. 11, the drug spreader 6 is lowered together with the lower slider 8 and the upper slider 9, When the rotation driving unit 19 is rotated in the clockwise direction, the medicine spraying basket 6 rises from the position shown in FIG. The lowering and raising are performed in a state in which a slide resistance is applied to the movable rack 20, and therefore, the dropping with the impact of the medicine spraying basket 6 is surely prevented.

  When the push pin 21 is pushed back, the convex portion 21c comes into contact with the inclined surface 22b, the first wedge 22 is pushed back to the position shown in FIG. 3, and the latch claw 15 engages with the pinion 14, and the slide resistance applying means 17 The application of the slide resistance to the movable rack 20 is released.

  In the illustrated cart-type drug spraying device, two drug spraying baskets 6 are provided so as to protrude from the left and right of the support frame 5, but it is not essential to provide two drug spraying baskets 6. It is possible that a single medicine sprinkler 6 is provided so as to protrude from one side of the support frame 5.

  Further, in the cart type medicine spraying apparatus of the embodiment, the medicine spraying basket 6 is attached to the lower slider 8. However, since the medicine spraying to a tall plant can be considered, the medicine spraying bowl 6 may be attached to the upper slider 9. Good.

  In addition, although the illustrated medicine spraying device is a two-wheel cart type, the present invention is not limited to the stand 4 of the illustrated device, and the three-wheel cart type medicine spraying device or the one-wheel cart type medicine in which an auxiliary wheel is attached. It can also be applied to a spraying device.

DESCRIPTION OF SYMBOLS 1 Cart 2 Wheel 3 Handle 4 Stand 5 Support frame 6 Drug distribution basket 6a Injection tube 6b Spray nozzle 7 Gear case 7a Rear wall 7b Front wall 7c Bolt 7d Step 7e Guide groove 8 Lower slider 9 Upper slider 10 Support arm 11 Support shaft 12 Suspension link 13 Connection fitting 14 Pinion 15 Latch claw 16 Spring 17 Slide resistance applying means 18 Rotating shaft 19 Rotation drive part (handle)
20 Movable rack 21 Push pin 21a Operation knob 21b Tapered surface 21c Convex portion 22 First wedge 22a, 22b Slope 23 Second wedge 24, 25 Sleeve 25a Spiral cam surface

Claims (3)

A cart provided with a support frame (5) standing upright on a cart (1) having wheels (2) and a handle (3), and attached to the support frame (5) so that a medicine spraying basket (6) projects sideways. Type drug spraying device,
A position-fixed gear case (7) provided on the support frame (5), a lower slider (8) and an upper slider (9) attached to the support frame (5) above and below the gear case so as to be movable up and down, and the gear case (7 ), The pinion (14) that is rotatably supported, the rotation drive means (19) that rotates the pinion, and the disengagement that engages with the pinion (14) and prevents the pinion from rotating at each rotation position. A latch claw (15), a movable rack (20) that vertically spans between the lower slider (8) and the upper slider (9) and meshes with the pinion (14), and a sliding resistance to the movable rack. A slide resistance applying means (17) for applying is provided, and the medicine spreader (6) is attached to either the lower slider (8) or the upper slider (9). Formula chemical spraying apparatus.   The slide resistance applying means (17) includes a push pin (21) having an operation knob (21a), a first wedge (22) pushed and pulled in the direction perpendicular to the axis of the push pin by the push pin, and a first The cart type medicine spraying device according to claim 1, comprising a second wedge (23) sandwiched between the wedge and the movable rack (20) to apply a frictional force to the movable rack (20).   On the outer periphery of the push pin (21), a sleeve (25) that rotates on the push pin by the guiding action of the spiral cam surface (25a) provided at the tip while being moved in the axial direction by being pushed by the push pin is fitted. The latch claw (15) is integrally provided on the sleeve (25), and the latch claw (15) is moved when the push pin (21) is moved in the slide resistance application direction to the rack by the slide resistance application means (17). The cart type medicine spraying device according to claim 2, wherein 15) rotates together with the sleeve (25) in a fixed direction so that the latch pawl is disengaged from the pinion (14).

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