JP6796298B2 - Vehicle-mounted metal piece collector - Google Patents

Description

The present invention is a vehicle mounting type used so that metal pieces such as iron scraps such as nails and screws and metal pieces such as Dalai powder scattered on the premises of a factory or a waste collection site can be collected and collected while the vehicle is running. Regarding metal piece collectors.

Iron scraps such as nails and screws may be scattered on the premises such as factories, construction sites, and waste treatment centers. Metal pieces such as scrap iron cause flat tires on vehicles traveling on the premises, such as forklifts that carry goods and trucks that deliver and carry out products and waste.
Therefore, it is desirable to constantly collect and clean the metal pieces scattered on the site.

It is conceivable to efficiently collect and collect iron scraps such as nails and screws by attracting them with a magnet.
For example, Japanese Patent Application Laid-Open No. 2004-216364 (Patent Document 1) states that metal pieces such as staplers and needle scraps scattered on a desk or office floor are attracted and collected using a magnet, and peeling is controlled. , A metal piece collecting device that can collect and clean metal pieces without directly touching them has been proposed.
The metal piece collecting device proposed here is a soft magnetic material that attracts metal pieces and a hard magnetic material that is rotatably attached so that its magnetic direction axis rotates in a plane that intersects with the soft magnetic material. The magnet is provided, and the angle of the magnetic direction axis of the soft magnetic material is controlled by the rotation of the hard magnetic material to control the adsorption and peeling of the soft magnetic material.

The metal piece collector proposed here is intended for metal pieces scattered in a small space such as a desk or office, and metal scattered on a large site such as a factory or an industrial waste treatment center. Manpower is required to collect and clean the pieces.

Japanese Unexamined Patent Publication No. 2015-87258 (Patent Document 2) proposes an apparatus capable of recovering a magnetic metal body such as a needle or a pin that has fallen on a floor surface by a simple operation.
It is a recovery device that can move back and forth and left and right with a grip on one end of the shaft and a recovery unit for collecting needle-shaped magnetic metal on the other end. The recovery unit is equipped with multiple permanent magnets and magnetic plates. A columnar magnetic metal adsorption member laminated alternately is used.
Further, by providing the housing for accommodating the metal adsorption member with wheels rotatably provided, it is possible to collect a metal body such as a needle while moving on the floor surface.
Since the recovery device proposed here is equipped with wheels, it is possible to collect metal pieces while sweeping, but the sweeping work must be performed while walking on the premises, so it is vast. It is inconvenient to collect metal pieces on the premises. Further, no specific means for peeling and removing the adsorbed metal pieces is disclosed. In order to easily peel off and remove the metal pieces after adsorption, it is necessary to use a magnet whose magnetic force is not too strong, such as a ferrite magnet.

On the other hand, as for a device equipped with a magnet for adsorbing a metal piece, a recovery device attached to a vehicle has also been proposed.
For example, in Japanese Patent Application Laid-Open No. 2017-74531 (Patent Document 3), metal dust is developed in an outdoor yard to form a spreading layer of the metal dust, and an electromagnet is swept on the upper surface of the spreading layer. , A method of adsorbing the metal powder on the surface layer of the spreading layer to an electromagnet has been proposed. Then, FIG. 1 depicts a lift magnet crane vehicle equipped with an electromagnet. However, the specific structure of the magnet part attached to it is not drawn.

Japanese Patent Application Laid-Open No. 7-299381 (Patent Document 4) is a magnetic separator that sorts iron pieces and the like from other objects by using magnetic attraction, and is a movement that can satisfy the use of a vehicle that can travel on public roads. A type magnetic separator is disclosed.
In the mobile magnetic separator proposed here, since the elements that make up the apparatus are mounted on the vehicle chassis, it is possible to move to a site that requires magnetic sorting work, and magnetically attracted iron pieces etc. , Bucket crane, power shovel, etc. are put into the receiving hopper provided at one end in the longitudinal direction.
The iron pieces, etc. discharged from the hopper are sent to the magnetic adsorption drum by the vibration feeder, and the attracted iron pieces, etc. fall to the opposite side without magnetic attraction due to the rotation of the drum, and are discharged at the drop position. It is designed to be received on a conveyor.
Since such a mobile magnetic separator is mounted on a vehicle, it is possible to collect metal pieces while the vehicle travels on a vast site. However, it becomes a large-scale device such as a vibration feeder, a magnetic adsorption drum, and a discharge conveyor, and it is difficult to apply it to a truck traveling on a general public road or a forklift for carrying goods.

As a device for collecting metal pieces attached to a vehicle, Japanese Patent Application Laid-Open No. 2013-92263 (Patent Document 5) discloses a magnet device for treating metal pieces and the like that hinder landmine exploration in the scene of landmine processing. There is. This magnet device is used by being attached as an attachment to the tip of an undulating and refractable arm of a heavy machine vehicle used in an excavator machine.
A permanent magnet is attached to an operable cylinder provided in a hollow housing having a bottom plate, and scraps such as iron are attracted or demagnetized to the bottom plate by using the vertical movement of the cylinder to be attracted to the bottom plate. I'm dropping the iron that I made.

Japanese Unexamined Patent Publication No. 2004-216364 JP-A-2015-87258 JP-A-2017-74531 Japanese Unexamined Patent Publication No. 7-299381 Japanese Unexamined Patent Publication No. 2013-92263

The metal piece recovery devices proposed in Patent Document 1 and Patent Document 2 are scattered over a vast site because the operator needs to hold the device and perform the collection work while sweeping the site. It is inconvenient to collect and clean metal pieces.

Since the metal piece recovery device proposed in Patent Document 3, Patent Document 4, and Patent Document 5 is a recovery device attached to a vehicle, it is possible to collect metal pieces while the vehicle is traveling on the site. Because it can be done, it is convenient for collecting and cleaning metal pieces scattered on a vast site.
However, there are problems that the configuration of the recovery device is not specifically disclosed (Patent Document 3) and that it is not versatile for a vehicle that can be mounted on a large scale (Patent Document 4 and Patent Document 5).

The present invention has been made in view of the above circumstances, and an object of the present invention is to attach and remove as necessary to various vehicles traveling in factories such as trucks and forklifts and waste treatment plants. It is possible to collect metal pieces scattered on the ground or floor while the vehicle is moving and traveling on the site, and the collected metal pieces can be easily manually peeled off and used repeatedly. The purpose is to provide a vehicle-mounted metal piece collector that can be used.

The vehicle-mounted type metal piece collector of the present invention collects and collects metal pieces on the ground or floor surface from magnetism while the vehicle is running, and releases the magnetic force for magnetism after the running is completed. A vehicle-mounted type metal piece collector capable of dropping the collected and collected metal pieces, a permanent magnet group for attracting the metal pieces, and a magnet support on which the permanent magnet groups are arranged side by side. , And a metal piece collector main body provided with a mounting portion for attaching to the vehicle body, which protrudes from the surface of the magnet support on the side where the permanent magnet group is not arranged; the metal piece is attached to the permanent magnet group. A magnetic piece of metal made of a soft magnetic plate having a magnetically attached surface that is attracted by magnetic force; and a magnet made of a non-magnetic material, one side of which is in contact with the permanent magnet group and the other side of which is in contact with the piece of metal. A spacer for demagnetization is provided, and the spacer for demagnetization has an operation portion that can be pressed toward the ground, and by pressing the operation portion toward the ground, the spacer for demagnetization is released from the permanent magnet group. It is a vehicle-mounted type metal piece collecting tool that is separated from each other and thereby releases the magnetic force on the magnetically attached surface of the metal piece magnetic body.

The magnetically attached release spacers, if example embodiment, before Symbol the case of non-magnetic thin plate having an area larger than the contact area between the permanent magnet group, wherein the non-magnetic thin plate, the permanent magnet group and the contact portions not said It is an operation unit. Alternatively, the demagnetization spacer is a non-magnetic housing having a bottom surface portion that serves as a contact surface with the magnetization release spacer of the permanent magnet group, and the housing includes the operation portion and the operation portion. It may be provided with a grip portion.

It is preferable that the mounting portion is adjusted so that the gap between the magnetized surface and the ground or floor surface is 3 to 6 cm while being mounted on the vehicle body.

Further, the vehicle-mounted metal piece collecting tool of the present invention may be provided with shock absorbing means capable of raising and lowering the magnetically formed surface.

It is preferable that the mounting portion has a length adjusting means capable of adjusting the distance between the magnetized surface on which the metal piece is magnetized and the ground or floor surface while being mounted on the vehicle body. Further, it is preferable that the mounting portion includes mounting position adjusting means capable of adjusting the mounting position of the magnet support on the vehicle body.
Further, the mounting portion may have an engaging means capable of engaging with the towing member engaging portion of the vehicle body.

Each permanent magnet constituting the front SL permanent magnet group may be a Halbach magnet array. A neodymium magnet is preferably used as the permanent magnet.
The present invention also includes the main body of the metal piece collector, which is a component of the vehicle-mounted type metal piece collector of the present invention.
The metal piece collecting tool main body of the present invention is preferably used for the vehicle-mounted type metal piece collecting tool according to the present invention, and has the following configuration. The magnet support in the main body of the metal piece collector is a flat plate, and the permanent magnet group has rare earth magnets magnetized on one side of the flat plate in a direction orthogonal to the flat plate so that the magnetic poles alternate. It is a group of permanent magnets closely arranged in the above, and the surface of the permanent magnet group on the side facing the installation surface of the flat plate forms a flush surface in contact with the spacer for demagnetization.
In the main body of the metal piece collector of the present invention, it is preferable that the permanent magnet groups are arranged side by side in a Halbach array in the longitudinal direction of the flat magnet support.

The vehicle-mounted metal piece collector of the present invention is easy to attach to and remove from the vehicle, and the collected metal pieces need only be removed from the demagnetization spacer, which affects the vehicle. You don't have to worry about it. Then, while traveling while mounted on a vehicle, metal pieces on the ground or floor can be collected, and the collected metal pieces can be easily attached and detached and used repeatedly.

It is a perspective view which shows the structure of the metal piece collector main body of the vehicle-mounted type which concerns on 1st Embodiment of this invention. It is a figure for demonstrating the magnetism of the magnet used in 1st Embodiment. It is a figure which shows the magnetic pole arrangement of a permanent magnet group. It is a figure which shows an example of the pulling member engaging part. It is a perspective view which shows the structure of the metal piece collecting tool of the vehicle mounting type using the collecting tool main body of 1st Embodiment. It is a figure which shows another example of the magnetic pole arrangement of a permanent magnet group. It is a figure for demonstrating the Halbach array. It is a figure which shows an example of a Halbach array magnet. It is a figure which shows one Example of the mounting position adjusting means. It is a figure which shows the structure of the metal piece collecting tool when the other embodiment of the metal piece collecting tool main body is used. It is a figure which shows another example of the engaging means. It is a figure which shows the structure of the metal piece collector using another example of a spacer for demagnetization. It is a figure for demonstrating the use method of the metal piece collector of this invention. It is a figure for demonstrating the use method of the metal piece collector of this invention. It is a figure for demonstrating the use method of the metal piece collector of this invention. It is a figure for demonstrating the use method of the metal piece collector of this invention.

[Vehicle-mounted metal piece collector body]
First, the main body of the metal piece collector, which is a main component of the vehicle-mounted type metal piece collector of the present invention, will be described.
The metal piece collecting tool main body of the present invention is a component of a vehicle-mounted type metal piece collecting tool that can collect and collect metal pieces on the ground or floor surface by magnetically attracting them while the vehicle is running.
A flat magnet support on which a group of permanent magnets for adsorbing the metal piece is arranged;
Permanent magnets in which permanent magnets magnetized in a direction orthogonal to the support plate are closely arranged on one side of the magnet support plate so that magnetic poles alternate; and permanent magnet support plate. It is provided with a mounting portion for attaching to the vehicle body, which protrudes from the surface on the side where the magnet group is not arranged.

An embodiment of the vehicle-mounted metal piece collector main body of the present invention will be described with reference to FIG.
In the metal piece collector main body 10 shown in FIG. 1, a rectangular parallelepiped flat plate 1 serves as a magnet support, and a plurality of neodymium magnets 2 for attracting metal pieces are adjacent to one side of the flat plate 1. They are arranged side by side so that there is no gap with the neodymium magnet 2.
An L-shaped member 3 having an L-shaped cross section, which serves as a mounting portion for mounting on the vehicle body, is projected at substantially the center of the surface of the flat plate 1 on the opposite side to which the magnet 2 is provided.

As shown in FIG. 2, each of the rectangular parallelepiped neodymium magnets 2, 2 ... Arranged side by side on one side of the flat plate 1 is a rectangular parallelepiped flat plate-shaped permanent magnet magnetized in the thickness direction, and the surface is N pole (or). The back surface of the S pole) is the S pole (or N pole), and the flat plate (magnet support) 1 made of cast iron is attracted and fixed by magnetic force.

The nine neodymium magnets 2 are arranged alternately and closely so that the long sides 2a of the rectangular parallelepiped neodymium magnet 2 are parallel to the width direction (W) of the flat plate 1 or parallel to the longitudinal direction (L) of the flat plate 1. ing. At this time, the directions of the magnets are arranged so that the poles of the magnets 2W arranged parallel to the width direction (W) and the poles of the magnets 2L arranged parallel to the longitudinal direction (L) are opposite to each other. .. The magnetic pole arrangement of the magnet group arranged on the flat plate 1 is as shown in FIG.

By using a plurality of permanent magnets, the number of magnetic poles on the magnet support 1 can be increased, the magnetic density can be increased, and the attractive force can be increased.

The L-shaped member having a cross section, which is the mounting portion 3 for mounting on the vehicle body, has an end portion of one side 3a of the L-shaped member joined to the surface of the flat plate 1 on the side where the magnet 2 is not provided. On the side 3b on the side of the L-shaped member that is not joined to the flat plate 1, a through hole 4 that penetrates in a direction parallel to the longitudinal direction of the other side 3a of the L-shaped member is provided. A shaft 20 serving as an engaging portion for engaging the towing member when towing the vehicle body, for example, can be inserted into the through hole 4. That is, the metal piece collector main body 10 can be attached to the vehicle body by inserting the shaft 20 and the spring 5 (described later) as the shock absorbing means into the through hole 4, and in this case, the through hole 4 is the vehicle. It serves as an engaging means for engaging with the towing member engaging portion 20 of the above.

The metal piece collector main body 10 having the above configuration is used by adsorbing and collecting metal pieces by magnetic force to a group of magnets via a magnet release spacer as described later. ..

[Vehicle-mounted metal piece collector]
The vehicle-mounted type metal piece collecting tool of the present invention is a vehicle-mounted type metal piece collecting tool capable of collecting and collecting metal pieces on the ground or floor surface by magnetism while the vehicle is running, and is the metal piece. To attach to the vehicle body, which protrudes from the permanent magnet group for attracting the magnet, the magnet support on which the permanent magnet group is arranged side by side, and the surface on the side where the permanent magnet group of the magnet support is not arranged. Main body of the metal piece collector provided with the attachment portion; a metal piece magnetic body made of a soft magnetic plate having a magnetically bonded surface that attracts the metal piece by the magnetic force of the permanent magnet group; and the permanent magnet group and the metal piece. It is provided with a spacer for releasing magnetism made of a non-magnetic material inserted between the magnetized body.

The metal pieces targeted by the collector of the present invention are metal pieces of magnetic scrap such as castings and steel materials that can be attracted and attracted by magnetic force, and are not particularly limited, but metal pieces that have fallen from a waste collection vehicle, waste treatment work, etc. It is a piece of metal that has spilled out, specifically, so-called scrap iron such as nails, screws, and metal parts; part of miscellaneous wires such as coated wires, waste wires, and miscellaneous wires; milling of iron-based members. Examples thereof include chip-like and perm-like metal powder that are occasionally generated.

The type of vehicle to which the vehicle-mounted metal piece collector of the present invention is attached is not particularly limited, but the use of the metal piece collector of the present invention is usually applied to a large area such as a factory, a construction site, or a waste treatment center. Since it is an efficient removal and cleaning of scattered metal pieces, trucks such as light trucks, three-wheeled trucks, light trucks, and truck passenger cars; vehicles for cargo handling and civil engineering construction work such as forklifts; , Passenger cars such as passenger cars exceeding 660 cc.

For attachment to the vehicle body, it is preferable to use an engaging portion for attaching a towing member when towing the vehicle because of ease of attachment and removal work to the vehicle body. The towing member engaging portion provided in the vehicle may be, for example, a towing hook provided under the bumper of a truck or a forklift 30 as shown in FIG. 4, although it depends on the type of the vehicle. The shaft 20 for engaging the towing member, which is attached to the side where the mast is not provided (usually, the vehicle back side), and the like can be mentioned.

An embodiment of a vehicle-mounted type metal piece collector using the vehicle-mounted metal piece collector main body shown in FIG. 1 will be described with reference to FIG.

The vehicle-mounted type metal piece collector shown in FIG. 5 uses a non-magnetic thin plate having an area larger than the contact area with the permanent magnet group as the demagnetization spacer 11, and is used as the metal piece magnetized body 12. , A soft magnetic plate having substantially the same area as the flat plate 1 constituting the magnet support is used.

The soft magnetic material constituting the metal piece magnetic body 12 is a material that does not have magnetization in the absence of a magnetic field and is weakly magnetized when a magnetic field is applied. It becomes a temporary magnet due to an external magnetic field, and quickly when the external magnetic field is removed. The magnetism disappears and it returns to the original state. As such a soft magnetic material, iron, silicon steel plate, permalloy, electromagnetic stainless steel and the like are used.
The metal piece magnetized body made of these soft magnetic materials is magnetized by the magnetic field of the permanent magnet group, and not only the entire soft magnetic plate becomes like a permanent magnet, but also has the effect of amplifying the attractive force of the magnet.
Therefore, in the soft magnetic plate, a magnetically attached surface 12a capable of attracting and adsorbing a metal piece is formed on a surface opposite to the surface abutting the magnetizing release spacer 11, and the metal piece magnetized body 12 is formed. Can function.

As the non-magnetic thin plate used as the demagnetization spacer 11, a non-magnetic metal plate such as a stainless plate or an aluminum plate can be used in addition to a plastic plate, a glass plate and a ceramic plate. Of these, a plastic plate is particularly preferably used because it is lightweight and has excellent impact resistance.
The demagnetization spacer 11 made of such a non-magnetic thin plate is fixed by being sandwiched between a soft magnetic plate to be a metal piece magnetic body 12 and a permanent magnet group.

The non-magnetic thin plate serving as the demagnetization spacer 11 has a rectangular shape substantially similar to the flat plate 1 which is a flat plate-shaped support holding the neodymium magnet group, and is larger than the area of the magnet holding portion to be abutted. It has a large area. In the embodiment shown in FIG. 5, the long side of the rectangular non-magnetic thin plate 11 is longer than the long side of the flat plate 1, so that the area is large.

The portion of the non-magnetic thin plate constituting the demagnetization spacer 11 that is not in contact with the neodymium magnet groups 2, 2 ... Detach the non-magnetic thin plate from the neodymium magnet groups 2, 2 ... For demagnetization. It becomes the operation unit 11a for the purpose.
The magnetizing release spacer 11 can be detached from the neodymium magnet groups 2, 2 ... By urging the operating portion 11a with a hand or foot in a direction in which the operator peels it from the neodymium magnet group.

The metal piece magnetized body 12 made of a soft magnetic material is attracted and fixed by the magnetic force of the neodymium magnet groups 2, 2 ... Through the spacer 11 for demagnetization, and the neodymium magnet groups 2, 2 ... The entire soft magnetic plate can act like a permanent magnet under the magnetic field of.
On the other hand, when the demagnetization spacer 11 is peeled off from the neodymium magnet groups 2, 2, ..., The metal piece magnetized body 12 is desorbed together with the demagnetization spacer 11. Since the metal piece magnetized body 12 and the demagnetization spacer 11 are not joined by using an adhesive or fixing means, when the metal piece magnetized body is released from the magnetic field, the metal piece magnetized body 12 is magnetized. The body 12 and the magnetizing release spacer 11 are separated from each other.

The metal piece collector having the above structure is preferably configured so that the distance between the ground or floor surface and the magnetically attached surface 12a of the metal piece magnetized body 12 is 3 to 6 cm. By ensuring such a separation distance, the metal piece can be sucked and sucked while the vehicle is running, and the vehicle can run stably even after the metal piece is sucked. Further, even if the ground or the floor surface has minute irregularities, by ensuring such a gap, it is not necessary to hinder the running on a normal ground.
For example, in the case of nails and screws, although it depends on the type, the maximum diameter of the head of commonly used nails is about 11 mm (head diameter of N150 is 11.5 mm), so nails and screws are adsorbed. Even after this, a gap of 2 cm or more remains between the vehicle and the ground, so that the running of the vehicle is not affected.

The vehicle-mounted type metal piece collector having the above configuration is used by being attached to the vehicle, and the metal piece collector sucks and sucks the metal pieces scattered on the ground or the floor surface while the vehicle is running. Can be adsorbed, collected and cleaned.

[Other Embodiments]
In the metal piece collecting main body of the present invention, a neodymium magnet is used as a permanent magnet, but the present invention is not limited to this. Neodymium magnets are preferably used because they have the highest coercive force among permanent magnets and have a strong attractive force for metal pieces at distant places. However, even with other permanent magnets, the number, arrangement, and shape are devised. By doing so, any material that can provide the magnetic force required for magnetizing the metal piece can be used.

For example, rare earth magnets other than neodymium magnetized can also be used because they have the characteristics of high magnetic flux density and high coercive force. Examples of other rare earth magnets include samarium-cobalt magnets, placeodym magnets, and samarium iron magnets.
Moreover, even if it is a ferrite magnet, it is possible to increase the holding power and use it by devising the arrangement.

The number and arrangement method of rare earth magnets arranged side by side on the magnet support are not limited to the first embodiment. The shape of the permanent magnet is changed so that the soft magnetic plate can be given a magnetic force that can attract metal pieces even if it is 3 cm or more away from the ground or floor so as not to interfere with the running of the vehicle. Depending on the situation, the number of arrangements and the arrangement method may be appropriately selected.

In the first embodiment, the permanent magnet group consists of a flat plate magnet magnetized in the thickness direction, in which the long and short sides of the magnets alternate so that the magnetic poles with respect to the support plate alternate, and the width of the support plate. Although they are arranged side by side so as to be parallel to the direction, the permanent magnet group adopted in the present invention is not limited to this.
For example, when a cubic rare earth magnet is used, it can be arranged as shown in FIG. 6 so that the magnetic poles with respect to the support plate alternate.

In order to increase the magnetic force, it is necessary to use at least three permanent magnets, and the arrangement is between two magnetized in the direction orthogonal to the magnetized surface and these two magnets. It is preferable to form a Halbach array with at least one magnetized in a direction parallel to the magnetized surface. Then, one N pole out of the two magnetized in the direction orthogonal to the magnetized surface and the remaining one S pole may be exposed on the magnetized surface.
By orienting in the Halbach array, the magnetic flux that goes out from each magnet and the magnetic flux that enters each magnet can be significantly increased. A strong magnetic field can be generated on the magnetized surface.

The Halbach array is a magnetic circuit that maximizes the local strength in a specific direction by optimizing the direction of the magnetic poles. By adopting such an array, the permanent magnets do not repel each other and there is no gap. It can be closely arranged and arranged side by side in a row.
FIG. 7 shows an example of the Halbach array.
By arranging the magnet group so as to form one or more combinations of N pole and S pole on the magnetized surface, the magnetized surface can be widened, and the size of the magnetized surface corresponds to the vehicle body to be mounted. A surface can be formed. Then, the magnetic path (magnetic flux amount) increases in the magnetized body constituting the magnetized surface, and a large attractive force can be exhibited for the iron piece to be attracted. This is especially noticeable when different magnetic poles are adjacent to each other.

Further, as each permanent magnet, a Halbach array magnet as shown in FIG. 8 may be used. The Halbach array magnet is a magnet with a structure in which the central permanent magnet is sandwiched between two permanent magnets on both sides facing the same pole, and it is possible to achieve a higher magnetic flux density than a combination of plain permanent magnets of the same size. it can.

Further, in the above embodiment, a member having an L-shaped cross section is used as the vehicle body mounting portion, and only one through hole is provided as an engaging means for engaging with the towing member engaging portion. The invention is not limited to this.
For example, as shown in FIG. 9, instead of an L-shaped member having an L-shaped cross section as a mounting portion, a protruding portion 6 projecting from a flat plate 1 which is a magnet support and a magnet support of the protruding portion 6 It may be a combination with a flat plate-shaped mounting position adjusting plate 7 extending in the width direction W of the magnet support 1 on the surface on the side not fixed to 1. The mounting position adjusting plate 7 has four through holes 8a to 8d formed in the flat plate, and one of the plurality of through holes (for example, 8d) uses a fixing member such as a pin or a bolt. It is used for fixing to the projecting portion 6 which is a mounting portion, and one (for example, 8a) is used as an engaging means for engaging with the pulling member engaging portion. Therefore, the distance between the vehicle body and the metal piece collector can be adjusted according to the selection of the through hole used for fixing to the projecting portion 6 and the through hole as the engaging means. In other words, the mounting position of the magnet support 1 on the vehicle body can be adjusted. The distance between the vehicle body and the magnet support 1 can be adjusted. As a result, for example, when the collecting tool cannot be hung from the towing hook due to the positional relationship between the towing hook and the bumper, or when there is a risk of hindering the running of the vehicle, the front side (towing) of the towing hook. A metal piece collector can be set on the rear side of the vehicle if the hook is at the rear of the vehicle.

Further, in the above embodiment, the engaging means that engages with the towing member engaging portion is a through hole, but the present invention is not limited to this. The engaging means is appropriately selected according to the type of the vehicle to be attached, particularly the type and shape of the towing member engaging portion of the vehicle. Then, the configuration of the attachment portion to the vehicle body is appropriately designed according to the type of the engaging means.

For example, when the towing member engaging portion is a hook, a mounting portion provided with an engaging means capable of engaging with the hook is adopted. For example, in the metal piece collecting tool shown in FIG. 10, an iron-based casting member 22 having a T-shaped cross section is integrally formed with a flat plate 22a serving as a magnet support constituting the metal piece collecting tool main body 21 and a mounting portion 22b. I am using it. The leg portion of the T-shaped member serves as a mounting portion 22b, and a bolt-type hanging hook 23 serving as an engaging means is screwed to the tip of the leg portion 22b.
When the towing member engaging portion to be attached is an O-ring-shaped hook, the metal piece collector can be engaged and attached by penetrating the bolt-type hanging hook 23 through the O-ring.

When the towing member engaging portion to be attached is a hook, for example, a hook type (for example, FIG. 11), an eyebolt type, a swivel bolt type, or the like is adopted as the engaging means depending on the shape of the hook. be able to.

Further, the mounting portion may be provided with a length adjusting means for adjusting the separation distance between the ground or floor surface and the magnetized surface of the metal piece magnetized body. By adjusting the length of the vehicle body mounting part from the magnet support, even if the type of vehicle body (height of the tow hook position from the floor surface) is different, the floor surface (or the ground) and the metal piece It is possible to adjust the separation distance from the magnetically coated surface. As a result, even if the type of vehicle to be mounted, that is, the mounting position of the vehicle body (height of the tow hook) is different, the height of the metal piece magnetized body from the floor surface (or the ground) can be used for vehicle running. The separation distance at which the metal pieces can be magnetically attracted by the permanent magnet group, preferably 3 to 6 cm, can be adjusted without causing any trouble.

Further, the constituent material of the magnet support 1 does not have to be an iron-based material. Not only magnetic materials such as iron plates, iron-based steel plates, ferrites, cobalt, and nickel-based alloys, but also non-magnetic metal plates such as aluminum plates, copper plates, and non-magnetic stainless steel plates containing Mn-containing austenite stainless steel, ceramic plates, and plastics. Non-magnetic inorganic materials such as plates and glass plates, polymer materials, and the like can also be used. In this case, the permanent magnet group is fixedly installed on the flat plate with an adhesive or the like.

Furthermore, in the above embodiment, as the spacer for demagnetization, a non-magnetic thin plate having an area larger than the area of the magnet mounting portion of the support flat plate is used, but the spacer for demagnetization used in the present invention is limited to this. Not done.
For example, as shown in FIG. 12, a non-magnetic housing having a bottom surface portion covering the magnetically attached surface of the permanent magnet group can be used. In the magnetizing release spacer 14 made of a non-magnetic housing shown in FIG. 12, a grip portion 14a is projected from a side surface portion, and the grip portion 14a is a non-magnetic housing 14 as a magnetic deposition release spacer. Is an operation unit for attaching and detaching the magnet from the permanent magnet group 2. In the form shown in FIG. 12, the eyebolt 15 is used as an engaging means with the towing member engaging portion of the vehicle.

In the case of the housing type demagnetization spacer 14, the bottom surface of the housing is preferably a bottom surface that completely covers the permanent magnet group, but may be a mesh surface or a slit surface. Since the metal piece is attracted to the magnetized surface of the collection plate, it is possible to prevent the metal piece from being directly attracted to the permanent magnet group as a spacer for releasing magnetism even on the mesh surface or the slit surface.

Furthermore, the metal piece collecting tool of the present invention may be provided with a shock absorbing means for alleviating an impact when a magnet surface collides with a convex portion on the ground or floor surface or a metal piece having a size larger than a predetermined size. .. For example, in the first embodiment (see FIGS. 1 and 5), a spring 5 is used as a shock absorbing means, and a shaft, which is a traction member engaging portion, is inserted through the spring 5. The contraction of the spring 5 raises the magnetized surface of the metal piece magnetized body, so that the impact buried in the magnetized surface can be absorbed. For example, when it hits a convex part of the ground or a metal piece that exceeds the distance between the magnetic surface and the ground, the spring contracts due to the impact, and the metal piece collector moves with the step on the ground or the metal piece. It is possible to prevent the vehicle from being hindered by the contact.

[How to use the vehicle-mounted metal piece collector]
Next, a method of using the vehicle-mounted type metal piece collector of the present invention will be described with reference to FIGS. 13 to 16.

FIG. 13 shows a case where the metal piece collector of the form shown in FIG. 5 is attached to the shaft 20 which is the towing member engaging portion of the forklift 30 shown in FIG.
The shaft 20 which is the traction member engaging portion is inserted into the through hole 4 and the spring 5 which is the shock absorbing means provided in the mounting portion 3 of the metal piece collecting tool, and is set in the forklift. In this way, the metal piece collector can be attached and fixed to the towing member engaging portion of the forklift.
The gap (S) between the floor surface (ground) and the metal piece magnetized body is 3 to 6 cm when mounted and fixed to the vehicle.

A vehicle with a metal piece collector attached and fixed, traveling on the ground where nails, screws, and metal coils are scattered. FIG. 14 shows how the metal piece magnetic body 12 adsorbs the metal pieces (nails and screws) scattered on the ground while the vehicle is running. The surface of the metal piece magnetically formed body 12 facing the ground is a magnetically magnetized surface 12a, and it is possible to adsorb metal pieces scattered on the ground existing in the vicinity of the collection plate during traveling. it can. The white arrow indicates the traveling direction of the vehicle (in the case of a forklift, the commuting back direction). The arrow is the traveling direction.

Since the gap (S) between the floor surface (ground) and the metal piece magnetic body 12 is 3 to 6 cm, it is usually with the ground even after adsorbing metal pieces such as iron nails, bolts, and parts. There is a gap between the two, which does not hinder the passage of the vehicle even after suction. Further, when a new metal piece comes into contact with the place where the gap with the ground is narrowed by adsorbing the metal piece, the spring contracts due to the impact force at the time of contact, and the magnetically attached surface 12a becomes. By ascending, it is possible to prevent the metal piece collector from damaging the ground or the floor surface or applying an excessive load to the vehicle.

FIG. 15 is a view of the collector in a state where the metal pieces are adsorbed on the metal piece magnetic body by traveling in the site, as viewed from the front side of the vehicle (when the traveling direction is back, the rear side of the vehicle). is there.
In this way, as the vehicle travels in the vast site, it is possible to collect metal pieces scattered on the ground or the floor surface and clean the site.

After the metal piece collecting work is completed, the portion of the spacer 11 for demagnetization, which is the operation portion 11a of the spacer 11 for demagnetization, is urged in the direction of the arrow so that the flat plate-shaped magnet support 1 is not in contact with the spacer 11. Is detached from the permanent magnet group 2. With the demagnetization of the demagnetization spacer 11, the metal piece magnetized body 12 was released from the magnetic field of the permanent magnet group 2, and as a result, the metal piece (nails, screws) magnetized on the metal collecting plate that lost magnetism. , Miscellaneous wire pieces, etc.) fall (see FIG. 16).
After the metal piece has fallen off, the metal collecting plate again attracts the metal piece magnetized body to the permanent magnet group 2 via the demagnetization spacer 11, and thus a new magnetized surface for collecting the metal piece. Can be formed.

As described above, since the metal piece collecting tool of the present invention has a simple structure that does not use a control mechanism such as an electromagnet, it can be attached without modifying various vehicle bodies, and it hinders the running of the vehicle. It is possible to collect metal pieces without causing any trouble.
The metal piece collection work is not limited to the case where the metal pieces scattered in the front of the vehicle in the traveling direction are collected by the metal piece collector attached to the front part of the vehicle when moving forward, but also attached to the rear part of the vehicle. When collecting the metal pieces during traveling by the metal piece collecting tool, the metal pieces scattered behind the vehicle may be collected by back traveling.

Then, after collecting the metal pieces, the newly collected metal pieces can be easily separated to expose a new magnetized surface to the metal piece magnetized body 12, so that the next metal piece collecting work can be started quickly. can do.

Further, the work of removing the metal piece collecting tool of the present invention from the vehicle body only needs to be disengaged from the towing member mounting portion. Therefore, when traveling on a general road, the metal piece collecting tool is taken. You can remove it.
Furthermore, since the metal piece collector is compact, it can be loaded on a vehicle and used for collection work at other sites.

The vehicle-mounted type metal piece collector of the present invention can be attached and detached regardless of the type of vehicle, and the metal on the ground or floor surface can be attached and removed while traveling without hindering the traveling in the attached state. Pieces can be collected and cleaned.
Therefore, it is possible to efficiently collect and clean metal pieces on the site so that vehicles traveling in factories and waste collection and treatment plants will not be punctured by metal pieces scattered on the vast site. Since the vehicle can run even with the collecting tool attached, it is efficient because the vehicle working on the site can clean the site while working.

Furthermore, the collected and recovered metal pieces can be used as iron-based scrap for effective use of resources.

1 Magnet support (flat plate)
2 Magnet 3 Mounting part 4 Engaging means (through hole)
5 Shock absorbing means 6 Mounting part 7 Mounting position adjusting plate 10 Metal piece collector body 11 Spacer for demagnetization 11a Operation part 12 Metal piece magnetized body 12a Magnetized surface 14 Housing type Spacer for demagnetization 14a Grip part 15 Engagement means (eyebolt)
20 Towing member engaging part (shaft)
21 Metal piece collector body 22a Magnet support 22b Mounting part 23 Engagement means (bolt type hook)

Claims (12)

The collected and collected metal pieces can be dropped by collecting and collecting the metal pieces on the ground or floor surface from the magnetism while the vehicle is running and releasing the magnetic force for the magnetism after the running is completed. , A vehicle-mounted metal piece collector
A vehicle body projecting from a group of permanent magnets for attracting the metal pieces, a magnet support on which the permanent magnet groups are arranged side by side, and a surface on the side where the permanent magnet groups of the magnet support are not arranged. Metal piece collector body with mounting part for mounting on;
A metal piece magnetized body made of a soft magnetic plate having a magnetically attached surface that attracts the metal piece by the magnetic force of the permanent magnet group; and one surface is in contact with the permanent magnet group and the other surface is in contact with the metal piece magnetized body. Equipped with a spacer for demagnetization made of non-magnetic material
The demagnetization spacer has an operation portion that can be pressed toward the ground, and by pressing the operation portion toward the ground, the demagnetization spacer is separated from the permanent magnet group, whereby the metal A vehicle-mounted metal piece collector that releases the magnetic force on the magnetized surface of a single magnetized body.
The demagnetization spacer is a non-magnetic thin plate having an area larger than the contact area with the permanent magnet group.
The vehicle-mounted type metal piece collecting tool according to claim 1 , wherein a portion of the non-magnetic thin plate that is not in contact with the permanent magnet group is the operating portion. The demagnetization spacer is a non-magnetic housing having a bottom surface portion that serves as a contact surface with the magnetization release spacer of the permanent magnet group.
Wherein the non-magnetic housing, the vehicle mounting type of metal piece collection device of the serial placement in claim 1, further comprising a grip portion serving as the operation unit. The method according to any one of claims 1 to 3 , wherein the mounting portion is adjusted so that the gap between the magnetized surface and the ground or floor surface is 3 to 6 cm in a state of being mounted on the vehicle body. Vehicle-mounted type metal piece collector. The vehicle-mounted type metal piece collecting tool according to any one of claims 1 to 4 , further comprising a shock absorbing means capable of raising and lowering the magnetized surface. The vehicle mounting type metal piece collecting tool according to any one of claims 1 to 5, wherein the mounting portion has an engaging means capable of engaging with the towing member engaging portion of the vehicle body . The attachment portion has a length adjusting means capable of adjusting the distance between the magnetized surface on which the metal piece is magnetized and the ground or floor surface while being attached to the vehicle body . The vehicle-mounted type metal piece collector according to any one of 6 . The vehicle-mounted metal piece collector according to any one of claims 1 to 7, wherein the mounting portion includes mounting position adjusting means capable of adjusting the mounting position of the magnet support on the vehicle body . The vehicle-mounted type metal piece collector according to any one of claims 1 to 8, wherein each permanent magnet constituting the permanent magnet group is a Halbach array magnet . The vehicle-mounted type metal piece collecting tool according to any one of claims 1 to 9, wherein the permanent magnet constituting the permanent magnet group is a neodymium magnet . The main body of the metal piece collector used for the vehicle-mounted type metal piece collector according to any one of claims 1 to 10 .
The magnet support is a flat plate and
The permanent magnet groups are on one side of said flat plate, rare earth magnets magnetized in a direction orthogonal to said flat plate, a permanent magnet group that is closely disposed such magnetic poles alternating,
The surface of the permanent magnet group on the side facing the installation surface of the flat plate forms a flush surface in contact with the demagnetization spacer . The permanent magnet groups, the metal piece collection device body as claimed in claim 11 which is juxtaposed with Halbach array in the longitudinal direction of the flat plate.

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