JP6922413B2 - Sampling device and attachment - Google Patents

Description

The present invention relates to a collecting device and an attachment, and more particularly to a collecting device and an attachment suitable for collecting topsoil containing seeds and plants.

In recent years, as an example of a method of greening a slope or bare land, a greening method of collecting topsoil containing seeds and plants around the construction site and laying it on the slope or bare land has been widely adopted. According to the greening method, the buried seeds around the site are used for greening without using the seeds and plants of exotic species, so diverse and early vegetation recovery in harmony with the ecosystem around the site is realized. be able to.

As a topsoil sampling device used in this type of greening method, for example, in Patent Document 1, high-pressure air is supplied from an air compressor to a double-cylindrical ejector having an annular air flow path, and the transport direction of the inner peripheral surface of the ejector. A device is disclosed in which high-pressure air is ejected from a slit formed at the downstream end to generate negative pressure, so that topsoil is sucked from a long suction hose connected to the upstream port of the ejector.

Japanese Unexamined Patent Publication No. 2003-143938

By the way, in the apparatus described in Patent Document 1, a slit for ejecting high-pressure air is formed at the downstream end of the inner peripheral surface of the ejector in the transport direction. Therefore, there is a problem that the suction force in the vicinity of the suction port is weakened by increasing the distance between the slit and the suction port at the tip of the suction hose. As a result, the topsoil cannot be effectively sucked from the suction hose, which may lead to a decrease in work efficiency.

Further, in the device described in Patent Document 1, if a large-capacity air compressor having a high discharge capacity is used in order to secure a suction force in the vicinity of the suction port, there is a problem that the size of the entire device is increased.

Further, in the technique described in Patent Document 1, since the ejector and the air compressor are connected by a supply hose, it takes time and effort to route the supply hose at a site where standing trees are crowded, which causes a problem that mobility and work efficiency are lowered. There is also.

An object of the present disclosure technique is to provide a sampling device and an attachment capable of improving workability and operability while effectively strengthening the suction force.

The attachment of the present disclosure is an attachment attached to an air supply means capable of supplying air, and a tubular flow path for passing air supplied from the air supply means is partitioned by an inner cylinder and an outer cylinder. An outlet communicating with the tubular flow path is opened between the upstream end side of the inner cylinder in the suction direction and the outer cylinder so as to face the inside of the inner cylinder, and the inside of the cylinder is opened from the outlet. An ejector portion that generates a suction force in the flow direction of the air by the air ejected toward the downstream side in the suction direction and a suction port are provided at the upstream end in the suction direction, and the downstream end in the suction direction is the injection of the outer cylinder. A suction tube connected to the upstream side in the suction direction from the outlet and sucking the object to be sucked from the suction port by the suction force, and a storage means provided on the downstream side in the suction direction of the ejector portion to house the object to be sucked. It is characterized by having.

Further, it is preferable that at least a part of the cylinder surface of the inner cylinder is provided with a Coanda surface that attracts the air ejected from the ejection port toward the cylinder surface side.

Further, it is preferable that the suction pipe is further provided with a caster mechanism that movably supports the suction pipe.

Further, it is preferable that the caster mechanism has a universal caster that rotatably supports the suction pipe and a cushioning means that supports the suction pipe in a displaceable manner.

Further, a discharge pipe having an upstream end in the suction direction connected to a downstream end in the suction direction of the ejector portion is further provided, and the accommodating means is a bag body attached to the downstream end in the suction direction of the discharge pipe. However, it may be an elbow tube that bends in an L shape or a bellows tube that can be refracted.

Further, it is preferable that the ejector portion includes a connecting pipe that communicates the inside of the cylinder with the tubular flow path, and the connecting pipe is connected to the air supply means so as to be relatively rotatable.

Further, the air supply means may be a blower device capable of supplying pressure air.

Further, the object to be sucked may be a topsoil containing at least seeds and / or plants.

The sampling device of the present disclosure is characterized by including the attachment and the air supply means.

According to the sampling device and attachment of the present disclosure, workability and operability can be improved while effectively strengthening the suction force.

It is a schematic perspective view which shows the sampling apparatus which concerns on this embodiment. It is a schematic partial cross-sectional view which shows the attachment which concerns on this embodiment. (A) is a diagram explaining the work of using the sampling device of the present embodiment on a substantially flat ground, (B) is a diagram explaining the work of using the sampling device of the present embodiment on a slope, and (C) is a book. It is a figure explaining the work of directly collecting seeds from a plant using the collection device of the embodiment. It is a schematic cross-sectional view which shows the ejector main body part which concerns on other embodiment.

Hereinafter, the sampling device and the attachment according to the embodiment of the present invention will be described with reference to the accompanying drawings. The same parts have the same reference numerals, and their names and functions are also the same. Therefore, detailed explanations about them will not be repeated.

FIG. 1 is a schematic perspective view showing a sampling device 1 according to the present embodiment. The collection device 1 includes a blower device 80 that supplies pressure air, and an attachment 10 that collects topsoil containing seeds, plants, and the like (hereinafter, simply referred to as topsoil).

[Blower device]
The blower device 80 is an example of the air supply means of the present invention, and includes a blower main body 81 that generates pressure air, and a delivery pipe 88 that sends out pressure air generated by the blower main body 81. An engine (not shown) and a fan rotationally driven by the engine are housed in the housing 82 of the blower main body 81. Further, the housing 82 is provided with an introduction port 83 for introducing outside air into the housing 82 and an outlet 84 for deriving pressure air from the inside of the housing 82. Further, the housing 82 is provided with a handle portion 85 that is gripped by an operator. The handle portion 85 is provided with an operating lever 86 that can arbitrarily adjust the driving force of the engine (for example, the throttle opening degree).

The delivery pipe 88 is a pipe member formed into a substantially cylindrical shape from a resin material such as plastic, and its base end side is connected to the outlet 84. Further, on the outer periphery of the tip of the delivery pipe 88, a protrusion 89 that can engage with the concave groove 22 of the connection pipe 21, which will be described later, is provided in an annular shape in the circumferential direction.

In the blower device 80, when the engine is driven in response to the operation of the operation lever 86 by the operator, the fan rotates accordingly. When the fan rotates, the outside air taken into the housing 82 from the introduction port 83 is compressed, and the pressure air is discharged from the outlet port 84 to the delivery pipe 88. The drive source of the blower device 80 is not limited to the engine, and may be, for example, a motor or the like driven by electric power supplied from a battery or the like. Further, the blower device 80 is not limited to the illustrated example, and may be a backpack type blower device.

[attachment]
The attachment 10 includes an ejector portion 20 that generates a suction force, a suction pipe 40 that sucks the topsoil, a caster mechanism 42 that facilitates the movement of the attachment 10, a discharge pipe 50 that discharges the topsoil from the ejector portion 20, and the topsoil. It is provided with a bag body 60 (an example of a storage means) for accommodating the above.

The ejector portion 20 includes a connecting pipe 21 formed of a resin material such as plastic into a substantially cylindrical shape, and an ejector main body portion 30 formed of a resin material such as plastic into a substantially double cylinder shape.

The inner diameter of the connecting pipe 21 is formed to be slightly larger than the outer diameter of the sending pipe 88. Further, the connecting pipe 21 is obliquely connected to the side surface of the ejector main body 30 so that its axis is inclined upward with respect to the axis of the ejector main body 30 at a predetermined angle. Further, on the inner peripheral surface of the connecting pipe 21, a concave groove 22 that can engage with the protrusion 89 of the delivery pipe 88 is provided in an annular shape in the circumferential direction.

That is, by engaging the concave groove 22 of the connecting pipe 21 with the protrusion 89 of the sending pipe 88, the entire attachment 10 can be detachably attached to the sending pipe 88 via the connecting pipe 21. Further, by engaging the concave groove 22 with the protrusion 89, the entire attachment 10 is held by the delivery pipe 88 so as to be immovable in the axial direction of the connecting pipe 21 and relatively rotatable in the circumferential direction.

In the present embodiment, the connection pipe 21 is provided with the concave groove 22, and the delivery pipe 88 is provided with the protrusion 89. However, these may be interchanged. Further, the connecting pipe 21 may be formed to have a smaller diameter than the sending pipe 88 so that the connecting pipe 21 can be inserted into the sending pipe 88.

As shown in FIG. 2, the ejector main body 30 has a double-cylinder structure having an outer cylinder 31 and an inner cylinder 32, and is hollow partitioned by the outer cylinder 31 and the inner cylinder 32. It is provided with a circular annular flow path 33. The annular flow path 33 communicates with the in-cylinder space 23 of the connecting pipe 21 connected to the outer cylinder 31. In the annular flow path 33, pressure air sent from the delivery pipe 88 (blower device 80) via the connection pipe 21 is introduced.

The upper end portion of the outer cylinder 31 is bent inward in the radial direction and is joined to the outer cylinder surface on the upper end side of the inner cylinder 32. A discharge pipe 50, which will be described in detail later, is connected to the upper end of the inner cylinder 32.

The lower end side of the outer cylinder 31 is bent radially inward below the lower end 32A of the inner cylinder 32, and the tip 31A is arranged radially inward from the lower end 32A of the inner cylinder 32. It is bent upward so that it can be used. An ejection flow path 36 communicating with the annular flow path 33 is formed between the tip end portion 31A of the outer cylinder body 31 and the lower end portion 32A of the inner cylinder body 32.

The ejection flow path 36 is formed so that the flow path is narrowed toward the outlet side. Further, at the outlet end of the ejection flow path 36, an annular ejection port 37 that faces the inside of the inner cylinder 32 and opens diagonally upward is provided. Further, a Coanda surface 32B is formed in a portion of the inner cylinder 32 adjacent to the ejection port 37 to attract the air ejected from the ejection port 37 toward the inner cylinder surface side of the inner cylinder 32.

In the ejector main body 30 configured as described above, when the pressure air introduced into the annular flow path 33 from the blower device 80 via the connection portion 21 is ejected from the ejection port 37, the inner cylinder body is affected by the Coanda effect. A primary air flow F1 flowing along the inner cylinder surface of 32 is generated. Further, the secondary air flow F2 that entrains the surrounding air is generated by the ejector effect of the primary air flow F1. That is, the suction force is effectively increased by the vigorous flow of the primary air flow F1 and the secondary air flow F2 in the inner cylinder 32 from the lower side to the upper side.

The suction pipe 40 is formed into a substantially cylindrical shape using a resin material such as plastic, and its upper opening edge is connected to the lower opening edge of the ejector main body 30 (lower end edge of the outer cylinder 31). Further, the lower opening of the suction pipe 40 functions as a suction port 41 for sucking up the topsoil. The length of the suction pipe 40 in the tubular axis direction is preferably the minimum length at which the ejection port 37 is not buried in the topsoil when the suction pipe 40 is inserted into the topsoil layer S as shown by the broken line in the figure. (For example, about 20 to 30 cm) is secured and formed.

The caster mechanism 42 includes a fixed arm 43, a swing arm 44, a base portion 45, a spring damper 46 (an example of cushioning means), and a universal caster 47. It is preferable that at least three caster mechanisms 42 are provided in order to ensure stability of the attachment 10 during movement.

One end of the fixed arm 43 is fixed to the upper outer peripheral surface of the suction pipe 40 and extends diagonally downward. Further, the upper end portion of the spring damper 46 is connected to the lower surface of the other end portion of the fixed arm 43. One end of the swing arm 44 is swingably connected to the lower outer peripheral surface of the suction pipe 40, and the other end is swingably connected to the base portion 45. The lower end of the spring damper 46 is connected to the upper surface of the base portion 45. The universal caster 47 is attached to the lower surface of the base portion 45 via the swivel support portion 48.

In the caster mechanism 42 configured as described above, when the operator moves the blower device 80 back and forth, sideways, and diagonally, the free caster 47 freely turns and moves following the movement. As a result, the attachment 10 smoothly moves forward and backward, laterally, and diagonally along the surface of the topsoil layer S. Further, as the attachment 10 moves, the spring damper 46 is displaced up and down as shown by arrows Y1 and 2 in the figure according to the surface unevenness of the topsoil layer S, so that the distance between the suction port 41 and the topsoil layer S is increased. It will be kept almost constant. Further, when the operator pushes down the blower device 80 downward and the suction pipe 40 is inserted into the topsoil layer S, the spring damper 46 contracts, and when the suction pipe 40 is pulled out from the topsoil layer S, the suction pipe 40 is pulled out. The restoring force of the spring damper 46 pushes the entire attachment 10 upward, so that the attachment 10 can be easily returned to its original position.

The discharge pipe 50 is formed of an elbow pipe that bends in a substantially L shape, a bellows pipe that can be refracted, or the like, and the lower opening edge thereof is the upper opening edge of the ejector main body 30 (in the illustrated example, the inner cylinder). It is connected to the upper end edge of the body 32). A bag body 60 is attached to the outlet of the discharge pipe 50. The bag body 60 is provided with a mesh for giving air permeability to at least a part thereof.

That is, when the surface soil sucked through the suction pipe 40 by the suction force generated in the ejector main body 30 is sent from the discharge pipe 50 to the bag body 60, only air passes through the mesh of the bag body 60. As a result, the surface soil is efficiently housed in the bag body 60. In the present embodiment, since the discharge pipe 50 is bent and formed in a substantially L shape, the topsoil once housed in the bag 60 does not fall due to gravity even when the blower device 80 is stopped. Will be securely held. The shape of the discharge pipe 50 is not limited to the L shape, and may be formed in a downward U shape.

Next, the topsoil sampling operation using the sampling device 1 of the present embodiment will be described with reference to FIGS. 3 (A) to 3 (C).

FIG. 3A is a diagram illustrating an operation of using the sampling device 1 of the present embodiment on a substantially flat ground. When the operator drives the blower device 80, the topsoil sucked up from the suction pipe 40 by the suction force generated in the ejector main body 30 of the attachment 10 is continuously collected in the bag body 60 via the discharge pipe 50. NS. At this time, when the operator moves the blower device 80 back and forth, sideways, and diagonally, the attachment 10 supported by the caster mechanism 42 smoothly moves forward and backward on the surface of the topsoil layer S while following the blower device 80. Move sideways and diagonally. That is, since the operator only needs to operate the blower device 80 with only one hand without supporting the attachment 10, the operability and workability of the operator can be surely improved. Further, since the attachment 10 is smoothly moved while following the blower device 80, the topsoil can be efficiently collected over a wide range in a short time.

FIG. 3B is a diagram illustrating an operation of using the sampling device 1 of the present embodiment on a slope. When the operator moves the blower device 80 back and forth, sideways, and diagonally while driving the blower device 80, the attachment 10 supported by the caster mechanism 42 smoothly moves forward and backward and sideways on the inclined surface while following the blower device 80. Move diagonally. At this time, since the attachment 10 is attached to the delivery pipe 88 of the blower device 80 via the connection pipe 21 so as to be relatively rotatable, only the attachment 10 is tilted along the slope. That is, the operator can perform the sampling operation while maintaining the blower device 80 in a substantially horizontal state without tilting the blower device 80. As a result, for example, even when the engine mounted on the blower device 80 is not suitable for use in a tilted state, the engine performance of the blower device 80 can be effectively exhibited, and topsoil can be collected on a slope. Efficiency can be reliably improved. Further, since it is not necessary to tilt the blower device 80 during work, the labor and burden on the operator can be effectively reduced.

FIG. 3C is a diagram illustrating an operation of directly collecting seeds from a plant T using the collection device 1 of the present embodiment. When seeds are collected from the plant T, the attachment 10 is largely rotated relative to the blower device 80, and the suction port 41 is brought close to the fruit, ear, etc. of the plant T. When the blower device 80 is driven in this state, the seeds sucked from the suction pipe 40 by the suction force generated in the ejector main body 30 are continuously collected in the lower bag body 60 via the discharge pipe 50. NS. That is, it is possible to save the trouble of temporarily dropping the seeds from the plant T onto the topsoil, and it is possible to surely improve the work efficiency. In addition, by making it possible to directly collect seeds from the plant T below the waist of the worker, it is possible to effectively reduce the work that the worker bends down, and the labor and burden of the worker. Can be reliably reduced.

As described in detail above, according to the present embodiment, the pressure air introduced from the blower device 80 into the annular flow path 33 of the ejector main body 30 via the connecting pipe 21 is sent to the lower end side in the ejector main body 30. A primary air flow F1 that flows along the inner cylinder surface of the inner cylinder 32 by ejecting from the provided ejection port 37, and a secondary air flow F2 that is generated by entraining the surrounding air by the primary air flow F1. Will flow vigorously from below to above in the inner cylinder 32. As a result, a strong suction force can be generated in the ejector main body 30, and the efficiency of collecting topsoil can be surely improved. In addition, by obtaining a strong suction force, it becomes possible to reliably suck and recover heavy topsoil containing water and the like.

Further, by providing the ejection port 37 on the lower end side (upstream end side in the suction direction) in the ejector main body 30, the distance between the ejection port 37 and the suction port 41 is shortened, and the suction force is also applied in the vicinity of the suction port 41. It becomes possible to strengthen effectively. Further, by strengthening the suction force in the vicinity of the suction port 41, it is possible to reliably suck the topsoil from the suction port 41 without using a large air compressor or the like as the air supply source, and to reduce the size of the entire device. You can also do it.

Further, by providing the caster mechanism 42 on the attachment 10 so that the entire attachment 10 can move following the blower device 80, the operability and maneuverability of the operator can be surely improved.

[others]
The present invention is not limited to the above-described embodiment, and can be appropriately modified and implemented without departing from the spirit of the present invention.

For example, in the above embodiment, the spout 37 has been described as having an annular opening, but as shown in FIG. 4, the spout 37 is formed by dividing the spout 37 into a plurality of openings at appropriate intervals in the circumferential direction. May be good. In this way, if the injection port 37 is divided into a plurality of parts and the opening area thereof is narrowed, the pressure air is vigorously injected from each injection port 37, and it is possible to generate a stronger suction force. Become. Further, the rigidity of the ejector main body 30 can be increased by reducing the opening area of the ejection port 37.

Further, in the above embodiment, the blower device 80 has been described as being used as the air supply source, but other devices can be widely used as long as the device can supply the pressure air.

Further, in the above embodiment, the bag body 60 has been described as a breathable bag, but for example, the attachment 10 is provided with a centrifuge or the like capable of separating air and seeds, and air is discharged from another exhaust port. The bag body 60 may be a non-breathable bag, a box-shaped container, or the like so as to allow it to escape.

Further, in the above embodiment, the annular flow path 33 has been described as being formed in a substantially hollow circular shape, but is formed in another hollow tubular shape different from the illustrated example, such as a hollow elliptical shape or a hollow polygonal shape. You may.

Further, the scope of application of the above embodiment is not limited to the collection of topsoil, and can be widely applied to other uses such as collection of fallen leaves and dust.

1 ... Collection device, 10 ... Attachment, 20 ... Ejector part, 21 ... Connection pipe, 22 ... Recessed groove, 30 ... Ejector body part, 31 ... Outer cylinder body, 32 ... Inner cylinder body, 33 ... Circular flow path, 36 ... Ejection flow path, 37 ... Ejection outlet, 40 ... Suction pipe, 41 ... Suction port, 42 ... Caster mechanism, 43 ... Fixed arm, 44 ... Swing arm, 45 ... Base part, 46 ... Spring damper (buffering means), 47 ... Flexible caster, 50 ... Discharge pipe, 60 ... Bag body (accommodation means), 80 ... Blower device (air supply means), 81 ... Blower body, 82 ... Housing, 83 ... Introduction port, 84 ... Outlet port, 85 ... Handle part, 86 ... operation lever, 88 ... delivery pipe, 89 ... protrusion

Claims (9)

An attachment that can be attached to an air supply means that can supply air.
A tubular flow path for passing air supplied from the air supply means is partitioned by an inner cylinder and an outer cylinder, and the tubular shape is formed between the upstream end side of the inner cylinder in the suction direction and the outer cylinder. The spout that communicates with the flow path opens facing the inside of the inner cylinder, and the air ejected from the spout toward the downstream side of the suction direction in the cylinder generates a suction force in the flow direction of the air. The ejector part to make
Suction port with provided suction direction upstream end, a suction direction downstream end is formed in the outer cylinder the spout cylindrical even Ru is connected to the suction direction upstream side of, from the suction port by the suction force A suction tube that sucks the object to be sucked and
An accommodating means provided on the downstream side of the ejector portion in the suction direction and accommodating the object to be attracted,
Wherein provided on the suction pipe, attachment, characterized in that it comprises a caster mechanism for movably supporting the suction pipe to the ground, the. The caster mechanism, according to claim having a casters supporting pivotally said suction pipe to the ground, and a buffer means for displaceably supported in the cylinder axis direction of the suction pipe the suction pipe to the ground surface The attachment according to 1. The attachment according to claim 1 or 2 , wherein the ejector portion includes a connecting pipe that communicates the inside of the cylinder with the tubular flow path, and the connecting pipe is connected to the air supply means so as to be relatively rotatable. An attachment that can be attached to an air supply means that can supply air.
A tubular flow path for passing air supplied from the air supply means is partitioned by an inner cylinder and an outer cylinder, and the tubular shape is formed between the upstream end side of the inner cylinder in the suction direction and the outer cylinder. The spout that communicates with the flow path opens facing the inside of the inner cylinder, and the air ejected from the spout toward the downstream side of the suction direction in the cylinder generates a suction force in the flow direction of the air. Ejector part to make and
A suction port is provided at the upstream end in the suction direction, and the downstream end in the suction direction is connected to the upstream side in the suction direction from the spout of the outer cylinder, and the suction force sucks the object to be sucked from the suction port. When,
A storage means provided on the downstream side of the ejector portion in the suction direction to house the object to be sucked is provided .
The ejector portion includes a cylindrical connecting pipe connected to the side surface of the outer cylinder and communicating the inside of the cylinder with the tubular flow path, and the connecting pipe is an air delivery pipe of the air supply means. An attachment characterized by being non-movable in the axial direction and relatively rotatable in the circumferential direction. The attachment according to any one of claims 1 to 4, wherein a Coanda surface for attracting air ejected from the ejection port to the tubular surface side is provided on at least a part of the tubular surface of the inner cylinder. Further provided with a discharge pipe in which the upstream end in the suction direction is connected to the downstream end in the suction direction of the ejector portion.
The accommodating means is a bag body attached to the downstream end of the discharge pipe in the suction direction.
The attachment according to any one of claims 1 to 5 , wherein the discharge pipe is an elbow pipe that bends in an L shape or a refractable bellows pipe. The attachment according to any one of claims 1 to 6, wherein the air supply means is a blower device capable of supplying pressure air. The attachment according to any one of claims 1 to 7, wherein the object to be sucked is a topsoil containing at least seeds and / or plants. The attachment according to any one of claims 1 to 8 and
A sampling device including the air supply means.

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