JPH0714765B2 - Pipe conveyor equipment - Google Patents

Description

Detailed Description of the Invention

According to the present invention, an intermediate portion of an endless belt-shaped conveyor belt is rounded into a pipe shape, and an object to be conveyed such as gravel, clay, water-mixed earth, sand, powder and grain is wrapped in the pipe in a substantially vertical direction. The present invention relates to the structure of a pipe conveyor device that conveys to.

[0002]

2. Description of the Related Art Conventionally known bucket elevators, screw conveyors, scraper conveyors, continuous flow conveyors, etc. are used as a conveyor device for conveying an object to be conveyed such as powder or granules in a steep or substantially vertical direction. Came. However, each of these transport devices has many drawbacks. For example, in bucket elevators and scraper conveyors, the equipment cost is low, but the power consumption is high, and when large lumps are mixed in the transported object, there are many accidents that stop the machine. Bucket elevators, scraper conveyors, and continuous flow conveyors have the drawback that the casing has a large cross-sectional area on the return path and is bulky. The screw conveyor has a small volume because it does not have a return path, but if a large lump is mixed with the transported object, it will frequently stop and cause accidents.

On the other hand, for example , JP-A-48-57374.
Japanese Patent Laid-Open No. 61-248808 and Japanese Patent Laid-Open No. 63-2
As disclosed in Japanese Laid-Open Patent Publication No. 62316, a pipe conveyor device conveys a flat conveyance belt in the middle of a conveyance path into a pipe shape and wraps a conveyed object such as powder or granules therein. It is configured to do.
With such a structure, it is possible to prevent the transported object from spilling outside. Further, the pipe-shaped section has a merit that it can be made compact because the section area can be made smaller than that of the flat section.

[0004]

However, it is considered that the maximum degree of inclination of the conveying path by the conveyor belt is generally determined by the coefficient of friction between the object to be conveyed and the surface of the endless conveyor belt. Even in the pipe conveyor device, the maximum gradient of the transport path is about 17 to 20 degrees, and it is impossible to transport at a steep gradient.

The inventor of the present invention positively reduces the cross-sectional area of the pipe part in the midway of the transfer path in the pipe conveyor device by pulsatingly reducing the peristaltic motion or pulsating motion of the transported object inside the pipe conveyor. The object is to give an object to be conveyed in a steep gradient or in a substantially vertical direction.

[0006]

In order to achieve the above object, the invention as set forth in claim 1 wraps an elastic endless belt-shaped conveyor belt around a front roller and a rear roller in a flat plate shape. In a pipe conveyor device, which is circularly driven, a midway portion of a conveying path between the rollers of the conveying belt is rounded into a pipe shape by a plurality of guide rollers, and conveys an object to be conveyed in a state of being stored therein. , A cross-sectional area of the pipe-shaped portion is provided in the middle of the transport path.
Pulsatingly contracts from upstream to downstream in the transport direction
To face the outer radial direction of the pipe
Place the pair of pressing rings in the radial direction of the pipe
Peristalsis imparting means arranged to space closer Te distribution
It is placed . In this case, the peristaltic motion imparting means
The pair of pressure wheels from the upstream side to the downstream side in the transport direction.
In order to reduce the cross-sectional area of the pipe-shaped portion in a pulsating manner,
It may be configured to intermittently drive closer . Claim 3
The invention described above is the pipe control according to claim 1 or 2.
In the bayer device, a flat-shaped carrier bell having the elasticity
The left and right ends of the
One edge has a concavo-convex shape that fits into the other edge freely
The engaging portion is formed.

[0007]

EXAMPLES Next, examples of the present invention will be described. In the pipe conveyor device 1 of the embodiment shown in FIGS. 1 and 2,
Conveyed objects W such as gravel, clay, water-mixed earth and sand, powder, and grains
The feed hopper 2 for charging the container is located at the lower end, and is composed of a lower horizontal transfer path 3, a vertical transfer path 4 and an upper transfer path 5,
The upper transport path 5 is formed in an L shape in plan view. A discharge hopper 6 for discharging the transported object W to the outside is provided at the terminal end of the upper transport path 5.

Reference numeral 7 denotes an elastic endless belt-like conveyor belt having a cloth layer made of cotton, nylon or the like as a core material and having a rubber outer casing, and having a width dimension of 600 mm to 12 mm.
00mm, thickness is about 15mm to 20mm. Conveyor belt 7
As will be described later, at the left and right ends in the width direction of the one end, when rolled into a pipe shape, one end of the other end and the other end of the other end are separable and engageable with each other. A ridge 8 is provided at the end edge of the conveyor belt 7 approximately in the middle of the plate thickness of the conveyor belt 7, and a groove 9 for fitting the ridge 8 is provided at the other end along the longitudinal direction of the conveyor belt 7. Formed (see FIG. 3).

The transport belt 7 is wound around a front roller 10 and a rear roller 11 located at the end of the lower horizontal transport path, and the rear roller 11 is driven by a drive motor 12 and a transmission mechanism such as deceleration (not shown). It is driven in circulation through and. At the location of the front roller 10 and the rear roller 11, the conveyor belt 7 is developed in a flat plate shape, but as will be described later, the cross section is rounded into a pipe shape in the middle of the conveyor path.

FIG. 3 is a sectional view of a portion of the supply hopper 2, in which a carrier W below the hopper gutter 2a is provided with three rollers 13a, 13b, 13b and a roller base 14 for supporting them. And is fixed in the frame body 15. Since the left and right edges of the conveyor belt 7 are raised 20 to 30 degrees with respect to the horizontal and supported in a gutter shape, the axes of the left and right rollers 13b and 13b are inclined with respect to the horizontal central roller 13a of the carrier roller. It gives the trough angle. The lower end edge of the supply hopper 2 is cut into a proper shape to form a passage restricting portion 16 so that the load amount of the transported object W per transport belt length is made uniform.
Below the roller base 14 of the carrier roller, a horizontal return roller 17, which is the return side (return path) of the conveyor belt 7, is arranged.

The initial guide portion 18 shown in FIG. 4 is a portion that guides the conveyor belt 7 so that its cross section in a direction perpendicular to the traveling direction thereof has a substantially arc shape. The initial guide part 18 is installed between the peristaltic motion imparting means 19 installed at three places of the lower horizontal transfer path, which will be described later, after the transfer target 7 is loaded on the transfer belt 7 by the supply hopper 2. In the initial guide portion 18, a plurality of (seven in the embodiment) guide rollers 20 are arranged in a substantially circular arc gutter shape, and the conveying belt 7 is gradually formed by a circular arc inscribed by the plurality of guide rollers 20 to be described later in a pipe shape. It transforms into. Although not shown, the plurality of guide rollers 20 are rotatably supported by respective roller bases 21 at predetermined positions of the frame body 15.

FIG. 5 shows a pipe-shaped holding portion 22 installed at a position for holding the state where the conveyor belt 7 is rolled into a pipe-shaped cross section. As shown in the drawing, the pipe-shaped holding portion 22 guides and supports the outer surface of the conveyance belt 7 which is rolled into a pipe shape by a plurality of guide rollers 23 at a middle portion in the width direction. The close holding roller 24 holds a state in which the protrusion 8 and the concave groove 9 which are engaging portions at the left and right edges of the conveyor belt 7 which are rounded by the large-diameter flange portions 24a, 24a at both ends are meshed with each other. .

Reference numerals 25, 26, and 27 are roller bases, and the roller base 27 for supporting the close holding roller 24 is a roller for adjusting the meshing state of the conveyor belt 7 with the engaging portion. A height position or the like is adjustably attached to the bases 26, 26 via a bolt 28 or the like. Since the plurality of return rollers 29 on the return path are located on the circulating inner diameter side of the conveyor belt 7, the ridges 8 and the concave grooves 9 at both left and right end portions of the conveyor belt 7 are located at both end edges of the return roller 29. Alternatively, the meandering of the conveyor belt 7 in the width direction may be prevented.

FIG. 6 shows the peristaltic motion imparting means 19 in the lower horizontal transport path 3, and FIG. 8 shows the peristaltic motion imparting means 19 'in the vertical transport path 4. These peristaltic motion imparting means 19, 19 'press the pipe-shaped conveyor belt 7 from the outside to reduce its cross-sectional area and transfer it in the conveying direction A, and a pair of pressing wheels 30, 31. It is composed of driving means such as a drive motor 32 that is rotationally driven, and swinging means for swinging at least one of the pair of pressing wheels 30 and 31.

In the embodiment, a pair of brackets 33, 34 are provided between the frame body 15 with the conveyor belt 7 rolled into a pipe shape being sandwiched therebetween.
Fix inside. The one bracket 33 is disposed so as to face the engaging portion side of the projection 8 and the concave groove 9 of the pipe-shaped rolled belt 7. A rotary support 36 is rotatably attached to the bracket 33 via a pivot 35, and the outer periphery of the rotary support 36 has large-diameter flanges 30 at both ends.
Four pressing wheels 30 with a and 30a are arranged in a cross shape in a side view, and are rotatably supported by the support shaft 37.

The rotary support shaft 38 of the other bracket 34.
The swing links 39, 39 are pivotally supported at their midpoints,
A rotary support 41 is provided at the tip of the swing link 39 so as to be rotatable via a pivot 40. The middle of the roller has a small diameter and both ends have a large diameter on the outer periphery of the rotary support 41. A plurality of (four in the embodiment) pressing wheels 31 having a drum shape in a side view are arranged in a cross shape in a side view and are rotatably supported by the support shaft 42. The gear 43 that rotates integrally with the rotation support 41 is attached to the rotation support shaft 38 of the bracket 34.
It meshes with the gear 44 that attaches to.

Reference numeral 45 is a chain sprocket that is attached to the rotary support shaft 38 and is rotatable integrally with the gear 44, and reference numeral 46 is a chain sprocket that is attached to the pivot shaft 35 and rotatable integrally with the rotary support 36. , Chain 47 wrapped around these chain sprockets 45, 46
Is wound around the drive chain sprocket 48 attached to the drive motor 32 and driven in the direction of arrow B in the figure. This rotation speed is set so as to be substantially equal to the transfer speed of the conveyor belt 7 itself at the position where the pressing wheels 30 and 31 press the conveyor belt 7.

The weight of the weight 49 attached to the other end of the swing link 39 causes the pressing belt 31 of the rotary support body 41 attached to the tip end side of the swing link 39 to move the pressing belt 31.
It is configured to be pressed against the back surface of. With this configuration, when the chain 47 is driven in the direction of the arrow B by the rotation of the drive motor 32, the one rotation support member 36 rotates in the counterclockwise direction in FIG. 6, while the rotation support member 41 attached to the swing link 39. From the chain sprocket 45 to the gears 45, 46
Rotate clockwise through the pair. Therefore, the conveyor belt 7 rolled into a pipe shape by the pressing wheels 30 and 31 attached to the pair of rotary supports 36 and 41 at appropriate intervals, respectively.
6 has an elliptical shape in cross section as shown in FIG. 6, and the pair of pressing wheels 30 and 31 rotate around the pivots 35 and 40 so as to be handled in the transfer direction of the conveyor belt 7 (direction of arrow A). Since the conveyor belt 7 rotates, the cross-sectional contraction portion given by the conveyor belt 7 moves along the transfer direction (arrow A direction). Such movement is similar to so-called peristaltic movement.

Therefore, the article W to be conveyed, which is wrapped in the conveyor belt 7, is also conveyed in the conveying direction (arrow A direction) by the conveyor belt 7 while receiving a large compressive force at the section contracting portion. It will be. The peristaltic motion imparting means 19 'on the vertical transport path 4 shown in FIG. 8 has the same configuration as that of the above-described embodiment except that the swing link 39 has an L-shaped side view. When the conveyance height (conveyance height difference) of the vertical conveyance path 4 is large, it is possible to provide sufficient conveyance ability by providing the peristaltic movement imparting means 19 'at appropriate intervals along the conveyance path.

When the object W to be conveyed, which is wrapped in the pipe-shaped portion of the conveyor belt 7, is smaller than the inner diameter cross-sectional area of the pipe portion, the object to be conveyed is to be conveyed in the vertical conveying path 4 or the steep conveying path. Although the object W slides downward, it is possible to give a peristaltic motion so as to push up the transported object W which is the content while shrinking the pipe inner diameter cross-sectional area by the peristaltic motion imparting means 19 ', 19'. Because you can
There is no possibility that the objects W to be conveyed will be accumulated on the lower end side of the vertical conveyance path 4 or the steeply rising conveyance path and cannot be conveyed.

It should be noted that it is not possible to bend and convey the flat conveyor belt 7 so that one of the left and right edges of the conveyor belt 7 is on the inside of the turning radius and the other is on the outside of the radius. Even in the transport path curved in an L shape in a plan view like the upper horizontal transport path 5 of No. 2, the cross section is rounded into a pipe shape regardless of the presence or absence of the transported object W. Figure 11
Indicates a bending guide means in the horizontal bending portion, and the upper and lower parts of the frame body 15 are provided with a plurality of guide rollers 50 rotatably supported by roller bases 53, respectively. It guides and supports the outer surface of the middle portion in the width direction. Similarly, the pair of left and right close-holding rollers 52, 52, which are also freely supported by the roller base 51, have a small-diameter portion and a ridge 8 and a concave groove 9 which are engaging portions at both left and right edges of the conveyor belt 7. Keeps meshing with each other. As another embodiment of the bending guide means, as shown in FIG. 5, one close holding roller with a pair of large-diameter flange portions is provided with a protrusion 8 which is an engaging portion at both left and right edges of the conveyor belt 7 and a concave portion. You may comprise so that the groove | channel 9 and the state which mesh | engaged mutually may be maintained.

The roller base 51 is provided with the conveyor belt 7
To adjust the meshing state of the
A height position, a left-right position, and the like are adjustably attached to the roller bases 53, 53 via bolts 28 and the like. FIG. 12 shows the support state of the conveyor belt 7 in the vicinity of the discharge portion, and the loft angle between the plurality of guide rollers 54, 55 is changed and adjusted so that the conveyor belt 7 develops into a flat plate shape as it approaches the rear roller 11. .

FIGS. 13 and 14 show another embodiment of the pipe conveyor device, in which the guide means for rounding the conveyor belt in the middle of the conveyor path to have a substantially circular cross-section has the same structure as that of the above embodiment, and therefore is shown in the drawings. And the description is omitted. In this embodiment, the lower horizontal transport path 3 having the supply hopper 2, the vertical transport path 4, and the upper horizontal path 5 having the discharge hopper 6 are provided, and since the horizontal curved portion is not provided, the transport belt 7 in the return path is Return it to the supply unit in the flat plate shape. The lower horizontal transport path 3 and the vertical transport path 4 are provided with peristaltic motion imparting means 19, 19 'having the same configuration as in the above embodiment. At this time, when the conveyance height (conveyance height difference) of the vertical conveyance path 4 is large, peristaltic motion imparting means 19 'are provided at appropriate intervals along the conveyance path. Reference numeral 56 shown in FIGS. 1 and 13 denotes a tension weight provided on the return path.

FIG. 15 shows another embodiment of the peristaltic motion imparting means. Brackets 60 fixed to one side of the frame body 15 are arranged at predetermined predetermined intervals, and each bracket 60 has a pivot shaft 61.
A rotary support body 62 is rotatably attached around the rotary support body 62, and four pressing wheels 63 are rotatably attached to the outer peripheral portion of each rotary support body 62 at appropriate intervals along the circumferential direction.
The conveyor belt 7 is arranged so as to come into contact with the engagement between the protrusion 8 and the concave groove 9. At this time, the outside of the engaging portion is sandwiched by the large-diameter flange portions of the pressing wheels 63.

The chain 65 is wound around chain sprockets 64, 64 mounted so as to integrally rotate the plurality of rotary supports 62, and is rotated in the direction of arrow C by a drive motor (not shown). The transport direction of the transport belt 7 itself in this case is an arrow A. A plurality of rotary supports 66 provided at positions facing the rotary support 62 with the conveyor belt 7 interposed therebetween.
Is a swinging link 6 rotatably supported about a central axis 70.
A plurality of (four in this embodiment) pressing wheels 68 are attached to the tips of the rotating support members 66 and press the back surface of the conveyor belt 7 at appropriate intervals along the circumferential direction on the outer peripheral portion of each rotating support member 66.
Is rotatably provided. The pair of swing links 67, 67
Tension springs 69 are mounted between them and set so that the pressing force on the back surface of the conveyor belt 7 by each pressing wheel 68 becomes substantially constant. The chain sprockets 71, 71 attached to the pair of rotary supports 66, 66 and integrally rotated, and the drive chain sprocket 7 rotatably provided on the central shaft 70.
Winding chain 73 around 2 and driving chain sprocket 7
2 is rotationally driven in the direction of arrow D by another drive motor or the like not shown. By these, the rotating support 62 that rotates,
The rotation speed of 66 is the same as that of the above-mentioned embodiment, the pressing wheel 63,
It is set so that the transfer speed of the transfer belt 7 by 68 and the transfer speed of the transfer belt 7 itself in the direction of arrow A substantially match. Reference numeral 74 is an idler wheel for preventing the chain 73 from loosening, which is realized by urging the swing arm 75 with a spring 76 mounted between the swing arm 67 and the swing link 67.

The above-mentioned rotary support members 36, 62 on the fixed bracket side may be constructed so as to be able to press and urge the conveyor belt 7 via a swinging link or the like. Each rotating support 3
The pressing means and the rotation driving means of 6, 41, 62 and 66 may utilize hydraulic pressure or pneumatic pressure. That
At the left and right ends of the flat belt 7,
When the conveyor belt 7 is rolled into a pipe shape, one edge is
A ridge 8 and a concave groove 9 which are fitted into one end edge so as to be detachable from each other.
Since the engaging part consisting of
When pressing in the direction, the engagement part can be prevented from coming off and the inside
Be sure to prevent accidents where the transported objects leak out
You can In the pipe conveyor device of the present invention, it is needless to say that the conveyor belt may be transferred in the state of being rolled into a pipe even on the return path.

[0027]

As described above, the claims
The invention described in No. 1 is an endless belt-shaped conveyor belt having elasticity.
On the front roller and the rear roller in a flat plate shape.
While the circulation belt is driven,
A plurality of guide rollers are provided along the transport path between the rollers.
Rounded into a pipe shape with the objects to be transferred stored inside
In the case of transportation in the state, the above-mentioned
The cross-sectional area of the ip-shaped part is directed from the upstream side to the downstream side in the transport direction.
The radius of the pipe-shaped part to reduce the pulsation
Pipe-shaped pair of pressing wheels arranged facing each other outward in the direction
It was configured to be separated and approached in the radial direction of the part.
Since the peristaltic motion imparting means is arranged,
Even if the route is vertical or steep (steep), the pipe
The transported object on the inner diameter side of the pipe-shaped part is the radius of the pipe-shaped part.
Pressed by a pair of pressure wheels arranged facing each other outward in the direction
While being conveyed, a peristaltic motion of being conveyed at substantially the same speed as the conveying speed of the conveying belt is given, and the conveying can be performed reliably. Further, since the conveyor belt is an elastic body, it can be curved in any direction while being rolled into a pipe shape, and can be easily replaced by a conventional means for conveying powder or the like by a pipeline.

The invention according to claim 2 is based on claim 1.
In the device described above, the pair in the peristaltic motion imparting means
Of the pressing wheel from the upstream side to the downstream side in the transport direction.
Intermittently connected to reduce the cross-sectional area of the pipe-shaped portion in a pulsating manner.
Since it is configured to drive close,
The cross-sectional area of the
Therefore, the transported object on the inner diameter side of the pipe-shaped part
It is handled intermittently from the upstream side to the downstream side in the feeding direction.
And the transport path is vertical or steep (steep)
Even if it is, it is possible to reliably convey the transported object to the upstream side.
It has the effect of being able to do it. Further, claim 3
The described invention is the pipe coil according to claim 1 or 2.
Oite to Nbe ya apparatus, plate-like conveying base with the elastic
The left and right ends of the
Concavo-convex shape in which one edge of one end fits into the other edge so that it can be separated from and attached to the other edge
The engaging portion of is formed. Therefore, the peristaltic movement
By applying means, positively move the pipe-shaped part inward in the radial direction.
When pressing, the engaging part can be prevented from coming off and the internal
It is possible to reliably prevent accidents such as leaks of conveyed items.
It has the effect of being able to.

[Brief description of drawings]

FIG. 1 is an overall side sectional view of a pipe conveyor device.

FIG. 2 is a partially cutaway plan view taken along the line II-II of FIG.

FIG. 3 is an enlarged cross-sectional view taken along the line III-III of FIG.

FIG. 4 is an enlarged sectional view taken along the line IV-IV in FIG.

5 is an enlarged cross-sectional view taken along the line VV of FIG.

FIG. 6 is an enlarged side view of a main part of the peristaltic movement imparting means 19.

7 is a sectional view taken along the line VII-VII in FIG.

FIG. 8 is an enlarged side view of an essential part of a peristaltic motion imparting means 19 ′.

9 is a sectional view taken along the line IX-IX in FIG.

10 is a cross-sectional view taken along line XX in FIGS . 6 and 8. FIG.

11 is an enlarged cross-sectional view taken along the line XI-XI of FIG.

12 is an enlarged cross section taken along line XII-XII of FIG.

FIG. 13 is a side sectional view showing another embodiment of the pipe conveyor device.

FIG. 14 is a plan view of FIG.

FIG. 15 is a side view showing another embodiment of the peristaltic motion imparting means.

[Explanation of symbols]

 1 Pipe Conveyor Device 2 Supply Hopper 3 Lower Horizontal Conveying Route 4 Vertical Conveying Route 5 Upper Horizontal Conveying Route 6 Discharging Hopper 7 Conveying Belt 8 Protrusion 9 Groove 15 Frame 18 Initial Guide 20,23 Guide Roller 19,19 'Peristaltic Motion imparting means 24,52 Close holding roller 30,31,63,68 Pressing wheel 32 Drive motor 33,34,60 Bracket 35,40,61 Axis 36,41,62,66 Rotation support 37,42 Spindle 39, 67 swing link 43,44 gear 45,46,64,71 chain sprocket 47,65,73 chain 48,72 drive chain sprocket 49,56 weight 69 tension spring 70 center axis 74 idler wheel 75 swing arm 76 spring

Claims (3)

[Claims] 1. An endless belt-shaped conveyor belt having elasticity,
On the other hand, the front roller and the rear roller are rolled into a flat plate shape and are circulated and driven, while the midway portion of the conveying path between the rollers of the conveying belt is rounded into a pipe section by a plurality of guide rollers. In a pipe conveyor device that conveys an object to be conveyed inside, in the middle of the conveyance path, the cross-sectional area of the pipe-shaped portion is upstream in the conveyance direction.
In order to reduce the pulsation from the side toward the downstream side,
A pair of pipe-shaped parts that are arranged radially outward of each other and face each other.
Of the pressing ring are separated from each other in the radial direction of the pipe.
A pipe conveyor device, in which a peristaltic motion imparting means configured to be arranged is disposed . 2. A pair of pressing means for applying the peristaltic motion.
Loop the pipe from the upstream side to the downstream side in the transport direction.
Drives intermittently to reduce the cross-sectional area of the cross section in a pulsating manner
The pipe conveyor device according to claim 1, wherein the pipe conveyor device is configured as follows . 3. A flat belt conveyor belt having elasticity
At the left and right ends, when rolled into the pipe shape, one
Concavo-convex engagement where one edge fits freely into the other edge
A part is formed, and claim 1 or claim 2 characterized by the above-mentioned.
The described pipe conveyor device.