JP7278116B2 - Bellows structure and self-propelled vibration conveyor - Google Patents

Description

The present invention provides a bellows structure in which one end of the bellows is fixedly joined to a fixed body, and the other end of the bellows is detachably joined to a moving body that can move in a direction intersecting the central axis direction of the bellows. and a self-propelled vibrating conveyor provided with the bellows structure.

In a vibrating conveyor provided with a trough for horizontally transporting granular material, the trough is usually sealed to prevent dust generation, and the inlet of the trough is connected to a granular material supply source via a bellows (for example, Patent document 1).

However, in a self-propelled vibrating conveyor that requires the trough to be retracted under the conditions of the discharge destination, for example, in the receiving bucket system as shown in FIG. Since the trough 1 that has penetrated into the bucket 2 interferes with the movement of the bucket 2, the trough 1 must be retracted.

Even when the trough 1 is retracted in this way, since the position of the supply source (supply pipe 7) that supplies the granular material to the inlet of the trough 1 cannot normally be changed, at least the movement range of the trough 1 is open. becomes a trough. Depending on the powder to be transferred, dust may be generated from this open trough, so as shown in FIG. There is
However, in the vibrating conveyor, it is necessary to have a gap between the trough 1 and the fixed dust collecting cover 6 that does not interfere with the vibration of the trough 1, and in the space formed between the trough 1 and the fixed dust collecting cover 6, Vibration of the trough 1 causes a volume change like an accordion, and the air in the trough 1 enters and exits along with dust through this gap.
Thus, there is a limit to the dust collection effect of the fixed dust collection cover 6, and there is the problem of contamination of the surroundings.

JP-A-6-92473

In view of the above problems, the problem to be solved by the present invention is, for example, in a self-propelled vibrating conveyor that requires the trough to be retracted, the trough can be a closed trough when transferring powder and grains, and when the trough is moved To provide a bellows structure that can be disconnected from the inlet of a trough, and a self-propelled vibrating conveyor provided with the bellows structure.

According to the present invention, the following bellows structure and self-propelled vibrating conveyor are provided.
1.
A bellows structure in which one end of the bellows is fixedly joined to a fixed body and the other end of the bellows is detachably joined to a moving body that can move in a direction intersecting the central axis direction of the bellows,
At the joining position where the other end of the bellows and the moving body are joined, a mutually attracting force (hereinafter referred to as "magnet A detaching mechanism is provided to bring the two into close contact with each other by utilizing the joining force of the magnet, and to separate the two by contracting the bellows against the joining force of the magnet when moving the moving body from the joining position,
The attachment/detachment mechanism has a bellows structure that attaches and detaches the bellows by using the moving operation of the moving body without using a new drive source for attachment/detachment of the bellows.
2.
A bellows structure in which one end of the bellows is fixedly joined to a fixed body and the other end of the bellows is detachably joined to a moving body that can move in a direction intersecting the central axis direction of the bellows,
At the joining position where the other end of the bellows and the moving body are joined, a mutually attracting force (hereinafter referred to as "magnet As a detaching mechanism, the moving body is brought into close contact with the moving body by utilizing the joining force of the moving body, and when the moving body is moved from the joining position, the bellows are contracted against the joining force of the magnet to separate the two. Moving wheels that roll in the moving direction of the moving body are provided on both sides of the other end side of the bellows in a direction perpendicular to the moving direction of the body, and rails for the moving wheels are provided on the moving body side,
At positions other than the joint position, the movable wheel rides on the rail surface of the rail against the joint force of the magnet, thereby contracting the bellows and disconnecting the joint between the other end of the bellows and the moving body. the movable body is movable while maintaining a gap between the other end of the bellows and the movable body;
A bellows structure in which the moving wheel is disengaged from the rail at the joining position, and the other end of the bellows and the moving body are joined by the joining force of the magnet.
3.
The magnet is provided on the moving wheel side, and the rail is made of carbon steel for machine structure which is a soft magnetic material,
At the joint position, the movable wheel is separated from the rail, and the other end of the bellows and the movable body are jointed by the joint force of the magnet, and the magnet provided on the movable wheel side and the rail are close to each other. 3. The bellows structure according to 2 above, wherein the joining force by the magnet is increased by doing so.
4.
The moving wheel has a two-wheel structure on one side, a front wheel and a rear wheel, via brackets connected to both sides of the other end of the bellows. 4. The bellows structure according to 2 or 3 above, wherein the rail end faces are changed so that the wheels roll and at the joint position, both wheels are disengaged from the respective rails at the same time.
5.
A self-propelled vibrating conveyor comprising a bellows structure according to any one of 2 to 4 above, wherein the trough for horizontally transferring the granular material has a closed structure and can move in the horizontal direction,
The other end of the bellows is detachably joined to the inlet of the trough,
The other end of the bellows is brought into close contact with the inlet of the trough by the joining force of the magnet when the powder is transferred,
When the trough is moved, the moving wheels ride on the rail surfaces of the rails provided on both sides of the trough against the joining force of the magnets, thereby contracting the bellows so that the other end of the bellows and the inlet of the trough are moved. A self-propelled vibrating conveyor that is disconnected from the
6.
6. The self-propelled vibrating conveyor according to 5 above, wherein a closing sheet is provided on the other end side of the bellows so as to be able to close the inlet of the trough when the trough is moved.

The bellows structure of the present invention is provided with the attachment/detachment mechanism described above, so that at the joining position where the other end of the bellows and the moving body are joined, the two can be brought into close contact using the joining force of the magnet, thereby allowing the moving body to move. Sometimes the two can be separated. Moreover, in the bellows structure of the present invention, the attachment/detachment mechanism separates the two by contracting the bellows when moving the moving body. does not substantially act, it is possible to prevent the bellows from being damaged when the two are separated.

The self-propelled vibrating conveyor of the present invention has the above-described bellows structure, so that the other end of the bellows can be brought into close contact with the entrance of the trough to form a closed trough when the powder is transferred, and both sides can be closed when the trough is moved. can be separated. As a result, in the self-propelled vibrating conveyor that requires the trough to be retracted, the conventional problem of contamination of the surroundings can be reduced or eliminated.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an overall configuration diagram of a self-propelled vibrating conveyor having a bellows structure, which is an embodiment of the present invention, in which (a) shows the time of transferring powder and (b) shows the time of evacuation of a trough. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall configuration diagram of a bellows structure that is an embodiment of the present invention, in which (a) shows a state in which the other end of the bellows is joined to the inlet of a trough (hereinafter referred to as "joint state"), and (b) separates the two. It shows a state (hereinafter referred to as "detachment state"). 2A is a cross-sectional view taken along the line AA of FIG. 2, where (a) shows the joined state of FIG. 2(a) and (b) shows the separated state of FIG. 2(b). FIG. 10 is a perspective view showing the main part of a self-propelled vibrating conveyor according to another embodiment of the present invention, showing an example provided with a closing sheet capable of closing the inlet of the trough when the trough moves. 1 is an overall configuration diagram of a conventional self-propelled vibrating conveyor provided with a fixed dust collection cover; FIG.

FIG. 1 shows the overall configuration of a self-propelled vibrating conveyor having a bellows structure, which is one embodiment of the present invention.
FIG. 1(a) shows the trough 1, which is the main body of the vibrating conveyor, during the transfer of the granular material. Granules are supplied to the inlet of the trough 1 through a bellows 3 from a supply pipe 7 serving as a supply source of the granules. The trough 1 is covered with a sealing lid 1a to form a closed structure, and becomes a closed trough as shown in FIG. 1(a) when the granular material is transferred.

Here, in this embodiment, the trough 1 is movable in the horizontal direction perpendicular to the central axis direction of the bellows 3 by the moving cylinder 1b. Specifically, the trough 1 can be horizontally moved by rolling the trough moving wheels 1c on the trough moving rails 1d. Further, the trough 1 is vibrated by a vibrating device 1e, and by the vibration of the trough 1, the granular material in the trough 1 is transferred toward the bucket 2 in a self-propelled manner.
In this embodiment, one end of the bellows 3 is fixedly connected to the supply pipe 7, which is a fixed body, and the other end of the bellows 3 is detachably attached to the inlet of the trough 1, which is a moving body. are spliced.

FIG. 1(b) shows a state in which the vibration of the trough 1 is stopped and the trough 1 is retracted by the moving cylinder 1b in order to raise the bucket 2 loaded with powder, that is, when the trough 1 is retracted. , the tip of the trough 1 is pulled out of the bucket 2 , and the other end of the bellows 3 is separated from the inlet of the trough 1 .
The portion of the bucket 2 into which the tip of the trough 1 penetrates is composed of four rubber plates on the top, bottom, left, and right. In any of the states shown in FIG. 1(b) in which the tip portion of the bucket 2 is pulled out, the airtightness of the bucket 2 is ensured.

Next, the configuration and operation of the bellows structure of this embodiment including the bellows 3 shown in FIG. 1 will be described with reference to FIGS. 2 and 3. FIG.

FIG. 2(a) shows that the lower flange portion 3a, which is the other end of the bellows 3, is connected to the bellows joining trough seat 1g (see FIG. 3(a)) around the bellows joining opening 1f, which is the entrance portion of the trough 1. The bonded state (the state of FIG. 1(a)) in which they are closely bonded is shown. In this bonded state, the powder is transferred while the trough 1 is vibrated.
On the other hand, FIG. 2(b) shows the state of FIG. 1(b) in which the vibration of the trough 1 is stopped and the trough 1 is retracted. In addition, FIG.2(b) has shown the state which retracted the trough 1 to the retraction limit. The stroke up to this retraction limit is, for example, about 800 mm.

Brackets 4 are attached to the bellows 3 so as to face both sides of the lower flange portion 3a (both sides in the direction orthogonal to the moving direction of the trough 1). Two moving wheels are provided, wheels 4a-2. On the other hand, rails 1h are provided on both sides of the trough 1 along the moving direction of the trough 1, and moving wheels (front wheels 4a-1 and rear wheels 4a-2) are arranged between the lower flange portion 3a of the bellows 3 and the trough 1. It rolls on the rail surface of the rail 1h in the moving direction of the trough 1 except for the joining position where the bellows joining trough seat 1g joins.

In this embodiment, the front wheel 4a-1 and the rear wheel 4a-2 are offset in the wheel rotation axis direction and roll on different tracks on the rail surface of the rail 1h. Then, as shown in FIG. 2(a), the end face position of the rail 1h is changed in accordance with the wheel base so that both wheels 4a-1 and 4a-2 are simultaneously disengaged from the rail 1h at the joining position. As a result, both wheels 4a-1 and 4a-2 are simultaneously disengaged from the rail 1h at the joining position, as described above, and the bellows 3 extends. At the same time, it rides on the rail 1h and the bellows 3 shrinks. As described above, in this embodiment, both wheels 4a-1 and 4a-2 operate simultaneously, so that the lower flange 3a of the bellows 3 can move up and down while maintaining a horizontal position without tilting.

At the joining position shown in FIG. 2(a), both wheels 4a-1 and 4a-2 are separated from the rail 1h as described above, and FIG. 3(a) shows this cross-sectional state.
Referring to FIG. 3(a), the lower flange portion 3a of the bellows 3 is closely joined to the bellows joining trough seat 1g around the bellows joining opening 1f provided in the sealing lid 1a of the trough 1, Trough 1 is closed. The material of the bellows joint trough seat 1g is preferably flexible rubber or the like in consideration of fixability to the sealing lid 1a and tight sealability with the lower flange 3a. Reference numeral 3b in FIG. 3 indicates the inner cylinder of the bellows 3. As shown in FIG.

A magnet 4b is attached to the lower surface of the bracket 4, and an attraction force (bonding force by the magnet 4b) is generated between the bracket 4 and the rail 1h made of a soft magnetic material such as general carbon steel for machine structural use. A gap .delta. It is preferable to make them as small as possible so that they do not come into contact with each other, for example, about 2 to 3 mm. Furthermore, as the material of the magnet 4b, a magnet such as a neodymium magnet capable of exerting a strong magnetic force is preferable.

As described above, in this embodiment, the joining force of the magnet 4b is used to strengthen the joint between the lower flange portion 3a of the bellows 3 and the entrance portion of the trough 1 (bellows joining trough seat 1g). Therefore, even when the trough 1 vibrates violently with a frequency of about 10 Hz and an amplitude of about 10 to 20 mm, the lower flange portion 3a of the bellows 3 follows the vibration of the trough 1 to maintain the contact state (bonded state). can be maintained.

When the trough 1 is retracted from the joint position shown in FIG. 2(a), both wheels 4a-1 and 4a-2 ride on the rail 1h at the same time as described above, and the lower flange portion 3a of the bellows 3 is lifted through the bracket 4. As a result, the bellows 3 shrinks. Then, as shown in FIG. 3B, the lower flange portion 3a of the bellows 3 is separated from the bellows joining trough seat 1g against the joining force of the magnet 4b, and a gap α is secured between them. As a result, both can move without sliding against each other. Note that the gap α is, for example, approximately 20 mm.

According to the attaching/detaching mechanism having the bellows structure as described above, the attachment/detachment operation of the bellows 3 is performed using the moving operation of the trough 1, and the attachment/detachment operation of the bellows 3 becomes possible without requiring a new drive source.
Therefore, according to the vibrating conveyor having such a bellows structure (detachment mechanism), the trough 1 can be a closed trough at the time of transfer of the granular material, and closed transfer of the granular material is possible. Further, when the trough 1 is retracted, the connection between the other end of the bellows 3 and the inlet of the trough 1 can be cut off, so the trough 1 can be retracted without any problem.

Here, when the trough 1 is retracted as shown in FIG. 2(b), the bellows joint opening 1f of the trough 1 is exposed. Since the inflow and transfer of granules are also stopped, dust generation due to vibration is suppressed. However, it is assumed that dust floating in the trough 1 may leak due to natural diffusion from the bellows joint opening 1f.

In order to prevent dust from leaking out from such a bellows joining opening 1f, a closing sheet that interlocks with the movement of the trough 1 can be provided.
One embodiment thereof is shown in FIG.
In the embodiment shown in FIG. 4, a flexible closing sheet 5 made of resin is provided on the lower flange portion 3a of the bellows 3, and the trough 1 moves from the joining position shown in FIG. 4(a) to the retracted position shown in FIG. 4(b). When this is done, the closing sheet 5 closes the bellows joint opening 1f.

Modifications of the above-described embodiment will be exemplified below.
(1) In this embodiment, the central axis direction of the bellows 3 is the vertical direction, and the moving direction of the trough 1, which is a moving body, is the horizontal direction perpendicular to the central axis direction of the bellows 3. However, the moving direction of the trough 1 is , is not limited to the direction orthogonal to the central axis direction of the bellows 3, and any direction intersecting the central axis direction of the bellows 3 may be used. Alternatively, the direction of the central axis of the bellows 3 may be the horizontal direction, and the moving direction of the trough 1 may be the vertical direction orthogonal to the direction of the central axis of the bellows 3 .

(2) In the present embodiment, the magnet 4b is provided on the lower surface of the bracket 4, which is the other end side of the bellows 3, but the magnet 4b can also be provided on the rail 1h side. However, the magnet 4b is preferably provided on the other end side of the bellows 3. FIG. This is because if the magnet 4b is provided on the other end side of the bellows 3, the joint force of the magnet 4b can always be obtained with the rail 1h made of a soft magnetic material. That is, when the magnet 4b is provided on the other end side of the bellows 3, a predetermined joining force is generated by the magnet 4b not only at the joining position shown in FIG. 3(a) but also at positions other than the joining position shown in FIG. 3(b). Therefore, the posture of the bellows 3 can be stabilized when the trough 1 is retracted from the joining position. In addition, when the central axis direction of the bellows 3 is the horizontal direction and the moving direction of the trough 1 is the vertical direction orthogonal to the central axis direction of the bellows 3 as in the previous modified example, the bellows 3 is moved at a position other than the joining position. It is preferable to provide the magnet 4b on the other end side of the bellows 3 also from the viewpoint of maintaining the posture.
Even if the magnet 4b is provided on the other end side of the bellows 3, its installation position is not limited to the lower surface of the bracket 4. For example, it is provided between the front wheel 4a-1 and the rear wheel 4a-2. can also

(3) In the present embodiment, the attachment/detachment mechanism is composed of a combination of moving wheels (front wheels 4a-1 and rear wheels 4a-2) and rails 1h, but the attachment/detachment mechanism is not limited to this embodiment. For example, when the trough 1 is moved from the joining position, the bellows 3 may be lifted to shorten the bellows 3 and separate the two. Further, it is also possible to adopt a mechanism for lifting and contracting the bellows 3 by, for example, inserting a wedge into the joint portion with the bellows 3 when the trough 1 is moved from the joint position.

(4) In the present embodiment, the bellows structure of the present invention is applied to the self-propelled vibrating conveyor, but the bellows structure of the present invention can also be applied to equipment other than the self-propelled vibrating conveyor. That is, in the bellows structure of the present invention, one end of the bellows is fixedly joined to the fixed body, and the other end of the bellows is separable from the moving body that can move in the direction intersecting the central axis direction of the bellows. Any device other than the self-propelled vibrating conveyor can be applied as long as the device utilizes a structure that connects to the .

1 trough (moving object)
1a sealing lid 1b moving cylinder 1c trough moving wheel 1d trough moving rail 1e vibrating device 1f opening for connecting bellows 1g trough seat for connecting bellows 1h rail 2 bucket 3 bellows 3a lower flange 3b inner cylinder 4 bracket 4a-1 front wheel (moving wheel)
4a-2 rear wheel (moving wheel)
4b magnet 5 closing sheet 6 fixed dust collection cover 7 supply pipe (fixed body)

Claims (6)

A bellows structure in which one end of the bellows is fixedly joined to a fixed body and the other end of the bellows is detachably joined to a moving body that can move in a direction intersecting the central axis direction of the bellows,
At the joining position where the other end of the bellows and the moving body are joined, a mutually attracting force (hereinafter referred to as "magnet A detaching mechanism is provided to bring the two into close contact with each other by utilizing the joining force of the magnet, and to separate the two by contracting the bellows against the joining force of the magnet when moving the moving body from the joining position,
The attachment/detachment mechanism has a bellows structure that attaches and detaches the bellows by using the moving operation of the moving body without using a new drive source for attachment/detachment of the bellows. A bellows structure in which one end of the bellows is fixedly joined to a fixed body and the other end of the bellows is detachably joined to a moving body that can move in a direction intersecting the central axis direction of the bellows,
At the joining position where the other end of the bellows and the moving body are joined, a mutually attracting force (hereinafter referred to as "magnet As a detaching mechanism, the moving body is brought into close contact with the moving body by utilizing the joining force of the moving body, and when the moving body is moved from the joining position, the bellows are contracted against the joining force of the magnet to separate the two. Moving wheels that roll in the moving direction of the moving body are provided on both sides of the other end side of the bellows in a direction perpendicular to the moving direction of the body, and rails for the moving wheels are provided on the moving body side,
At positions other than the joint position, the movable wheel rides on the rail surface of the rail against the joint force of the magnet, thereby contracting the bellows and disconnecting the joint between the other end of the bellows and the moving body. the movable body is movable while maintaining a gap between the other end of the bellows and the movable body;
A bellows structure in which the moving wheel is disengaged from the rail at the joining position, and the other end of the bellows and the moving body are joined by the joining force of the magnet. The magnet is provided on the moving wheel side, and the rail is made of carbon steel for machine structure which is a soft magnetic material,
At the joint position, the movable wheel is separated from the rail, and the other end of the bellows and the movable body are jointed by the joint force of the magnet, and the magnet provided on the movable wheel side and the rail are close to each other. 3. The bellows structure according to claim 2, wherein the joining force by said magnet is increased by doing so. The moving wheel has a two-wheel structure on one side, a front wheel and a rear wheel, via brackets connected to both sides of the other end of the bellows. 4. The bellows structure according to claim 2 or 3, wherein the end face positions of the rails are changed so that the wheels roll and at the joint position, both wheels are disengaged from the respective rails at the same time. A self-propelled vibrating conveyor comprising a bellows structure according to any one of claims 2 to 4, wherein the trough for horizontally transporting the granular material has a closed structure and can move in the horizontal direction,
The other end of the bellows is detachably joined to the inlet of the trough,
The other end of the bellows is brought into close contact with the inlet of the trough by the joining force of the magnet when the powder is transferred,
When the trough is moved, the moving wheels ride on the rail surfaces of the rails provided on both sides of the trough against the joining force of the magnets, thereby contracting the bellows so that the other end of the bellows and the inlet of the trough are moved. A self-propelled vibrating conveyor that is disconnected from the 6. The self-propelled vibrating conveyor according to claim 5, further comprising a closing sheet on the other end side of said bellows, capable of closing an entrance portion of said trough when said trough moves.

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