JP2003089495A - Magnet device for working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the fall of floor panels, steel sheets, etc., by controlling their rocking and vibration not only in the lateral direction but also in the fore-and-aft direction. SOLUTION: In a magnetic device 2 wherein a support frame 23 supporting a lifting magnet 22 is rockably journaled to a connection frame 21 connecting to a boom 11 of the wheeled loader 1 and springs 25 are provided distanced from each other in the lateral direction between the connection frame 21 and the support frame 23, a scraper 31 is provided in front of the support frame 23 and a skid 40 is provided in the rear of the support frame 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mounted on a work vehicle such as a construction machine such as a wheel loader and a power shovel, or a transportation machine such as a forklift to lay a steel plate for laying and unloading steel materials and at a soft place of the ground. The present invention relates to a magnet device for a work vehicle used for cargo handling and transporting work of steel materials such as rust.

[0002]

2. Description of the Related Art When transporting steel materials by trucks or the like,
It is necessary to load and unload steel materials on the platform. When temporarily using a heavy vehicle or machine in a soft place on the ground, lay a sheet steel plate on the ground and use it as a vehicle passage, or install a machine on the sheet steel plate. To do. In such a case, it is necessary to transport and move the steel plate for the laying plate at the time of laying or collecting.

Conventionally, when unloading steel materials, a wire rope was hung on the steel materials and lifted by a crane. The floor plate steel plate provided with the hanging hole in advance was hung by hooking the hanging hole. However, so-called slinging work such as hanging a wire rope on a steel material or hooking a hanging hole of a steel plate of a laying plate is difficult and dangerous.

For this reason, a magnet device for work vehicles has been used in which a steel material can be attracted by a magnet. As shown in FIGS. 8 to 9, in the magnet device 100 for a work vehicle, a support frame 123 supporting a lifting magnet 122 is pivotally supported by a support shaft 124 on a connecting frame 121 connected to a wheel loader. A pair of springs 125 are provided between the connection frame 121 and the support frame 123 so as to be separated from each other by a predetermined distance in the left and right directions. The lifting magnet 122 includes a horizontally long magnet frame 126 and a pair of left and right magnets 12 arranged on the lower surface of the magnet frame 126 at predetermined intervals.
7, and the magnet 127 is attached to the magnet frame 126 via a swinging mechanism (not shown). The scraper 13 is provided in front of the support frame 123.
1. Positioning tools 134 are provided at the rear and the sides.

This magnet device 100 includes a base plate steel plate 4
When the swing amount or the vibration amount is small, the swing mechanism of the magnet 127 can absorb the vibration caused by the horizontal swinging or bending of the support frame 123 and the connecting frame 123 when the swing amount or the vibration amount becomes large. Since it is absorbed by the left and right springs 125 provided between the floor plate 121 and 121, it is possible to prevent the floor plate steel plate 4 from falling off due to the horizontal swing or vibration (see Japanese Patent Application No. 2000-375058).

[0006]

However, although this magnet device is provided with the spring 125 which absorbs the swing and vibration in the left and right directions, the vibration absorbing means for absorbing the swing and vibration in the front and rear direction. Is not prepared. Therefore, the rocking or vibration of the floor plate steel plate 4 in the front-rear direction is absorbed by the rocking mechanism of the magnet 127 while the rocking amount or the vibration amount is small, but when the rocking amount or the vibration amount increases, the rocking mechanism of the magnet 127 increases. It cannot be absorbed only by itself, and the floor plate steel plate 4 may fall off.

The present invention solves the above-mentioned problems in a magnet device for a work vehicle, and is for a work vehicle capable of suppressing rocking and vibration in the front-rear direction of a floor plate steel plate or the like and preventing the falling. It is an object to provide a magnet device.

[0008]

SUMMARY OF THE INVENTION According to the present invention, a support frame for supporting a lifting magnet is swingably supported on a connecting frame connected to a work vehicle so that vibration is absorbed between the connecting frame and the supporting frame. In a magnet device for a work vehicle in which a body is separated left and right, a scraper is provided in front of a support frame and a skid is provided in the rear of the support frame to solve the above problems.

In this magnet device, the vibration in the left-right direction of the floor plate steel plate or the like is absorbed by the vibration absorber which is provided between the support frame and the connection frame in the left-right direction, and the vibration in the front-rear direction is in front of the support frame. Since it is suppressed by the scraper and the skid behind the support frame, the work can be performed safely without the risk of falling off.

If a cushioning mechanism is provided between the support frame and the skid, it is possible to promptly cushion the rocking or vibration in the front-rear direction.

[0011]

1 is a side view of a wheel loader equipped with a magnet device showing an embodiment of the present invention.
2 is a front view of the magnet device, FIG. 3 is a side view of the magnet device, and FIG. 4 is a plan view of the magnet device. The wheel loader 1 includes a front wheel frame 1 provided with tires 12.
4 is a self-propelled vehicle of articulated type in which a rear wheel side frame 15 provided with tires 13 is flexibly connected to the left and right at a central portion thereof. The rear wheel side frame 15 includes a driver's cab 16 and a driving part. 17 and 17. Front wheel side frame 1
A hoisting boom 11 is provided at 4, and the magnet device 2 is attached to a coupler 18 provided at the tip of the boom 11 so as to be tiltable in the front-back direction.

The magnet device 2 has a horizontally long frame body fixedly supporting a connecting frame 21 provided with hooks 20 for connecting to the coupler 18 at both left and right rear portions thereof, and a horizontally long frame body at a lower end portion thereof. And a support frame 23. The support frame 23 is the connection frame 21.
Is supported by a support shaft 24 so as to be swingable left and right, and springs 25 are provided as vibration absorbers between the support frame 23 and the connection frame 21 at a predetermined distance on both left and right sides of the support shaft 24. ing.

As the vibration absorber, instead of the spring 25, an elastic body such as rubber or a vibration absorbing mechanism utilizing air pressure, hydraulic pressure or the like may be used. Lifting magnet 22
Includes a magnet frame 26 fixed to the support frame 23, and magnets 27 attached to the left and right lower surfaces of the magnet frame 26. Magnet 2
7 is swingably suspended from a magnet frame 26 by a suspension bolt (not shown) via a cushioning material (not shown), and only deforms the cushioning material when the adsorbed steel material is bent by its own weight. When a force is applied, it swings together with the suspension bolt, and the swinging range is limited where it tilts and comes into contact with the magnet frame 26.

The magnet frame 26 is equipped with a battery as a power source for the magnet 27 and a magnet control device (not shown). When the control cable is wired between the magnet control device and the driver's cab 16, the driver's cab 1
The magnet 27 can be controlled from 6. In addition,
It can be configured to be controlled wirelessly.

When the charging cable is wired between the battery and the power supply circuit of the wheel loader 1, the battery is always charged by the charging function of the wheel loader 1. Also in this case, since the steel material is adsorbed by the power supplied from the battery, even if the power supply circuit side of the wheel loader 1 accidentally cuts off the power supply during the cargo handling work, the steel material does not fall off. .

A scraper 31 is attached to the front of the support frame 23 via a cushioning material 32. The scraper 31 is attached so that the lower edge 33 is slightly higher than the lower surface of the magnet 27. Also,
A skid 40 is provided behind the support frame 23 so as to be slightly higher than the lower surface of the magnet 27.

Further, at the rear portion of the support frame 23, 3
An individual positioning tool 34 is provided. Positioning tool 34
Is composed of an extendable and retractable arm 35 and a plumb bob 36 suspended from the tip of the arm 35. Positioning tool 3
2 out of 4 are separated from each other by a predetermined distance to the left and right, and the arms 3
5 is provided so as to project rearward, and the other one is provided so that the arm 35 projects laterally.

When laying the laying plate steel plate 4 using the wheel loader 1 equipped with the magnet device 2, the coupler 18 is tilted back and forth so that the lower surface of the magnet 27 is aligned with the surface of the laying plate steel plate 4. Boom 11
And the magnet 27 is energized to attract the floor plate steel plate 4. In this magnet device 2, since the support frame 23 is pivotally supported by the connecting frame 21 so as to be swingable left and right, for example, even when the floor plate steel plate 4 is placed on an uneven ground and is inclined, the magnet 27 is laid on the floor plate. The steel plate 4 can be positioned so as to be in close contact with the inclination of the steel plate 4 and surely adsorbed.

Before the base plate steel plate 4 is adsorbed, the length of the arm 35 of the positioning tool 34 is adjusted in advance and contracted, and the fixing screw 37 is attached.
By fixing the plumb bob 36 of the positioning tool 34 arranged on the left and right to one side of the floor plate steel plate 4 and the plumb bob 36 of the other one positioning tool 34 to the hanging hole of the floor plate steel plate 4. , Easy lifting magnet 22
Can be positioned at the center of gravity of the floor plate steel plate 4.

When mud or snow adheres to the surface of the floor plate steel plate 4, the coupler 18 is tilted forward and the edge 33 of the scraper 31 is brought into contact with the surface of the floor plate steel plate 4 and slid back and forth. , Mud and snow can be easily removed. At this time, shocks and vibrations generated by the scraper 31 are buffered by the buffer material 32, so that the magnet 2
It does not adversely affect the battery of 7 and the control device.

When the floor plate steel plate 4 is adsorbed, the boom 11 is raised, the wheel loader 1 is moved to the laying position of the floor plate steel plate 4, and the boom 11 is lowered and aligned. To lay. Wheel loader 1 by attracting floor plate steel plate 4 with magnet device 2
When it is transported by, vibration is generated due to the rocking or bending of the floor plate steel plate 4. When the floor plate steel plate 4 swings or vibrates in the left-right direction when the swing amount or the vibration amount is small, the magnet 27
When it is absorbed by the rocking mechanism and the amount of rocking or vibration increases, it is quickly absorbed by the left and right springs 25 provided between the support frame 23 and the connecting frame 21.

Further, when the floor plate steel plate 4 swings or vibrates in the front-rear direction, when the swing amount or the vibration amount is small, the magnet 27 is used.
Is absorbed by the rocking mechanism of. As the amount of swing and the amount of vibration increase, the front and rear portions of the magnet 27 of the floor plate steel plate 4 and the scraper 31 in front of the support frame 23 and the support frame 2 are increased.
It abuts against the skid 40 at the rear of 3, and swinging and vibration are suppressed. Therefore, the floor plate steel plate 4 is prevented from falling off, and the work can be performed safely.

Since the wheel loader 1 is an articulated type self-propelled vehicle, it has high maneuverability and can efficiently lay the laying steel plate 4 even on uneven terrain. FIG. 5 is a side view of a magnet device for mounting on a hydraulic excavator. The magnet device 50 includes a connecting frame 51 having a pin hole 53 for connecting with a coupler (not shown) provided at the tip of a boom of a hydraulic excavator and capable of tilting forward and backward, and a turning mechanism 54 provided on an upper portion thereof. There is. Other configurations are similar to those shown in FIGS.

That is, the scraper 31 is attached to the front of the support frame 23 via the cushioning material 32. In this scraper 31, the lower edge 33 is the magnet 2
It is attached so as to be slightly higher than the lower surface of 7.
A skid 40 is provided behind the support frame 23 so as to be slightly higher than the lower surface of the magnet 27.

Therefore, the rocking or vibration of the base plate steel plate 4 in the front-rear direction is small when the rocking amount or the vibration amount is small.
When the rocking amount and the vibration amount are increased by the rocking mechanism of No. 7, the front and rear portions of the magnet 27 of the floor plate steel plate 4 are located in front of the support frame 23 and the scraper 31 and the support frame 2.
It abuts against the skid 40 at the rear of 3, and swinging and vibration are suppressed, and falling of the floor plate steel plate 4 is prevented.

When the magnet device 50 is attached to a hydraulic excavator having a crawler as a traveling means, the magnet device 2
Although the maneuverability is inferior to the case where the wheel loader 1 is mounted on the wheel loader 1, since the boom reach is long and the boom can be swung by the swivel base, it is possible to move the steel material at a relatively short distance, for example, to the bed of the truck. It is suitable for work such as loading and unloading steel materials.

FIG. 6 is a side view of a magnet device for mounting on a forklift. This magnet device 60
Includes a connecting frame 61 provided with a fork insertion hole 63 for inserting a fork of a forklift. Other configurations are similar to those shown in FIGS. That is, in front of the support frame 23, the scraper 3
1 is attached via a cushioning material 32. The scraper 31 is attached so that the lower edge 33 is slightly higher than the lower surface of the magnet 27.

A skid 40 is provided behind the support frame 23 so as to be slightly higher than the lower surface of the magnet 27. Therefore, when the rocking amount or the vibration amount of the floor plate steel plate 4 in the front-rear direction is small, it is absorbed by the rocking mechanism of the magnet 27, and when the rocking amount or the vibration amount increases, the floor plate steel plate 4 is The front and rear portions of the magnet 27 come into contact with the scraper 31 in front of the support frame 23 and the skid 40 in the rear of the support frame 23 to suppress swinging and vibration and prevent the floor plate steel plate 4 from falling off.

The magnet device 60 can be easily connected to a forklift by inserting a fork into the fork insertion hole 63 of the connecting frame 61 and tightening and fixing it with a bolt (not shown) of a fixing tool. Since the forklift is highly manoeuvrable, by connecting the magnet device 60 to the fork, it is possible to efficiently perform not only the work of laying the steel plate 4 but also the work of transporting steel materials in the factory.

FIG. 7 is a side view of a magnet device showing another embodiment of the present invention. This magnet device 70
Is used by being mounted on the wheel loader 1, and its basic configuration is the same as that shown in FIGS. That is, in the magnet device 70, the connecting frame 21 provided with the hook 20 for connecting to the coupler 18 and the supporting frame 2 for fixedly supporting the lifting magnet 22.
3 and 3. The support frame 23 is pivotally supported on the connection frame 21 by a support shaft 24 so that the support frame 23 can swing left and right. Between the support frame 23 and the connection frame 21, springs 25 serving as vibration absorbers are provided on both left and right sides of the support shaft 24. Are provided at a predetermined distance.

The lifting magnet 22 includes a magnet frame 26 fixed to the support frame 23, and magnets 27 attached to the left and right lower surfaces of the magnet frame 26. The magnet 27 is suspended from the magnet frame 26 via a cushioning material so as to be swingable by a suspension bolt. The magnet frame 26 is equipped with a battery, which is a power source of the magnet 27, and a magnet control device.

A scraper 31 is attached to the front of the support frame 23 via a cushioning material 32. The scraper 31 is attached so that the lower edge 33 is slightly higher than the lower surface of the magnet 27. Also,
A skid 40 is provided behind the support frame 23 so as to be slightly higher than the lower surface of the magnet 27. A spring 41 is provided between the support frame 23 and the skid 40 for cushioning the attracted floor plate steel plate 4 or the like when swinging, vibrating, and abutting.

At the rear portion of the support frame 23, three positioning tools 34 are provided. This magnet device 70
When laying the laying plate steel plate 4 using the wheel loader 1 mounted with, the boom 11 is lowered while tilting the coupler 18 back and forth so that the lower surface of the magnet 27 is aligned with the surface of the laying plate steel plate 4, and the magnet 27 is moved. Is energized to adsorb the floor plate steel plate 4.

In the magnet device 70, since the support frame 23 is pivotally supported by the connecting frame 21 so as to be able to swing left and right, for example, even if the floor plate steel plate 4 is placed on an uneven ground and tilted, the magnet device 70 is magnetized. 27 can be positioned so as to be in close contact with the inclination of the floor plate steel plate 4 and can be surely adsorbed. When the floor plate steel plate 4 is attracted, the positioning magnet 34 can easily position the lifting magnet 22 at the center of gravity of the floor plate steel plate 4.

When mud or snow adheres to the surface of the floor plate steel plate 4, the coupler 18 is tilted forward and the edge 33 of the scraper 31 is slid back and forth while being in contact with the surface of the floor plate steel plate 4. , Mud and snow can be easily removed. After the floor plate steel plate 4 is adsorbed, the boom 11 is raised, the wheel loader 1 is moved to the laying position of the floor plate steel plate 4, the boom 11 is lowered and aligned, and then the energization of the magnet 27 is cut off to lay the floor plate steel plate 4. .

When the floor plate steel plate 4 is attracted by the magnet device 70 and conveyed by the wheel loader 1, vibration is generated due to the rocking or bending of the floor plate steel plate 4. The horizontal swing or vibration of the floor plate steel plate 4 is absorbed by the swing mechanism of the magnet 27 when the swing amount or the vibration amount is small, and when the swing amount or the vibration amount becomes large, the support frame 23 and the connection frame 21 are separated from each other. It is quickly absorbed by the left and right springs 25 provided therebetween.

Further, the rocking or vibration of the floor plate steel plate 4 in the front-rear direction is small when the rocking amount or the vibration amount is small.
Is absorbed by the rocking mechanism of. As the amount of swing and the amount of vibration increase, the front and rear portions of the magnet 27 of the floor plate steel plate 4 and the scraper 31 in front of the support frame 23 and the support frame 2 are increased.
The skid 40 abutting on the rear side of 3 is swung and vibration in the front-rear direction is quickly buffered by the spring 41, and the swing and vibration are suppressed. Therefore, the floor plate steel plate 4 is prevented from falling off, and the work can be performed safely.

[0038]

As described above, the magnet device for a working vehicle according to the present invention can suppress not only the right and left direction but also the rocking and vibration of the steel plate of the laying plate in the front and rear direction, and the dropout can be reliably prevented. can do. If a cushioning mechanism is provided between the support frame and the skid, rocking and vibration in the front-rear direction can be quickly cushioned.

[Brief description of drawings]

FIG. 1 is a side view of a wheel loader equipped with a magnet device showing an embodiment of the present invention.

FIG. 2 is a front view of a magnet device.

FIG. 3 is a side view of the magnet device.

FIG. 4 is a plan view of a magnet device.

FIG. 5 is a side view of a magnet device for mounting on a hydraulic excavator.

FIG. 6 is a side view of a magnet device for mounting on a forklift.

FIG. 7 is a side view of a magnet device showing another embodiment of the present invention.

FIG. 8 is a front view of a conventional magnet device.

FIG. 9 is a side view of a conventional magnet device.

[Explanation of symbols]

1 wheel loader 2 Magnet device 4 Floor plate steel plate 11 boom 12 tires 13 Front wheel side frame 14 tires 15 Rear wheel frame 16 cab 17 Driving Department 18 coupler 20 hooks 21 connecting frame 22 Lifting magnet 23 Support frame 24 spindles 25 springs 26 magnet frame 27 magnets 31 scraper 32 cushioning material 33 Edge 34 Positioning tool 40 skids 41 spring 50 magnet device 51 connecting frame 53 pin hole 54 Turning mechanism 60 magnet device 61 Connection frame 62 Fork insertion hole 70 Magnet device

Claims (2)

[Claims] 1. A connecting frame connected to a work vehicle,
A magnet device for a work vehicle in which a support frame that supports a lifting magnet is swingably supported, and a vibration absorber is provided between a connecting frame and a support frame in a laterally spaced manner. A magnet device for a work vehicle, characterized in that a scraper is provided on the back side and a skid is provided on the rear side of the support frame. 2. The magnet device for a work vehicle according to claim 1, further comprising a buffer mechanism provided between the support frame and the skid.