JPH085531B2 - Cylindrical belt conveyor device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a so-called gassho type cylindrical belt conveyor device, and more specifically, to a cylindrical belt conveyor that solves the problem of misalignment of the ends of the conveyor belts overlapping the gassho shape. Regarding the device.

[Prior Art] In a cylindrical belt conveyor device of a gassho type, a cylindrical guide member composed of a plurality of rollers arranged in the circumferential direction is arranged in series along the running direction of the endless belt. Then, the endless belt is deformed so that the end portions of the endless belt overlap each other in a palm shape and the central portion becomes a cylindrical shape in the cross section to form a conveyance space.

In the above-mentioned cylindrical belt conveyor device, since the end portions of the endless belt in the cross-sectional direction overlap each other in a palm shape, it is possible to secure the sealing property of the cylindrical transfer space, and it is advantageous to improve the problem of spillage. .

However, when the load of the conveyed product becomes non-uniform, the end portions of the conveyor belt may be displaced and the regular shape of the palm may not be maintained. An increase in the amount of deviation causes problems such as an increase in load during traveling of the conveyor belt, damage to equipment such as a cylindrical guide member due to the increase in load, and deterioration in sealing performance of the transfer space.

[Problems to be Solved by the Invention] The present invention has been developed in view of the above-mentioned circumstances.
Its purpose is to suppress or correct the deviation of the end portion in the cross-sectional direction when the conveyor belt is running, and to increase the load on the conveyor belt, damage the equipment such as the cylindrical guide member, and reduce the sealing property of the transfer space. To provide a cylindrical belt conveyor device.

[Means for Solving the Problems] A cylindrical belt conveyor device of the present invention is a base, an endless belt movably mounted on the base, and a base, and at least a part of the endless belt is cross-sectioned. Cylindrical belt conveyor device having a large number of cylindrical guide members composed of a plurality of rollers arranged in the circumferential direction for guiding the end portions by overlapping each other in the shape of a palm and deforming the central portion into a cylindrical shape. In at least one of the cylindrical guide members, at least one of the cylindrical guide members is a shift detecting unit that detects a shift of an end portion of the endless belt that overlaps the palm shape, and a base unit that changes the direction of the rotation axis of at least a part of the rollers by the detection amount of the shift detecting unit. A roller swinging member that is swingably supported by the roller swinging member whose axial direction is changed by the roller swinging member.
It is characterized in that the deviation between the end portions is suppressed or corrected.

[Operation] When the endless belt travels, the endless belt is deformed by the cylindrical guide member, whereby the center portion of the endless belt in the cross-sectional direction is deformed into a cylindrical shape by the roller of the cylindrical guide member to form a transport space, and The rollers of the cylindrical guide member cause the end portions of the endless belt in the cross-sectional direction to overlap each other in a palm shape.

By the way, when the end portions are deviated while the endless belt is running, the deviation detecting means detects the deviation amount and the roller rocking member is rocked accordingly, thereby suppressing the deviation between the end portions. The direction of the rotation axis of the roller of the cylindrical guide member is changed to the correction direction.

Embodiment An embodiment of the cylindrical belt conveyor device of the present invention will be described below with reference to the drawings.

The base 1 is a conveyor frame 4 arranged so as to extend long along the conveying direction of the endless belt 2.
A fixed pipe (10), a right side mounting frame (11) and a left mounting frame (13) which are applied so as to face each other in series along the length direction of the fixed pipe (10) and from both sides in the cross-sectional direction.
And mounting frames 11 and 1 facing each other with screw parts 120 at both ends.
3 are inserted into the mounting holes 110 and 130, and the nut 121 is screwed into each screw part 120.
And a connecting rod 12 that is fixed by screwing.

Here, the upper side of the base portion 1 is a forward path A that travels from the transported material loading place to the transported material discharging location, while the lower side of the base portion 1 is a return path that returns from the transportation discharging location to the transported material loading location. It is on the B side. A drive pulley (not shown) is arranged on the tip side of the fixed pipe 10.
A driven pulley (not shown) is disposed on the other end side of the. An endless belt 2 is movably installed between the drive pulley and the driven pulley.

The endless belt 2 is in the shape of a flat belt, and is formed by a central portion 20 and ears 21 and 22 as end portions formed on both sides of the central portion 20 in the cross-sectional direction. The ears 21, 22
The boundary area between the center portion 20 and the central portion 20 has a small rigidity, that is, is easily bent by reducing the thickness of the canvas embedded in the endless belt 2.

On the outward path A side of the fixed pipe 10, a large number of outward path side cylindrical guide members are arranged in series along the traveling direction of the endless belt 2. On the return path B side of the fixed pipe 10, a large number of return path side cylindrical guide members are arranged in series along the traveling direction of the endless belt 2. It should be noted that FIG. 1 and FIG. 2 respectively show one outward guide cylinder guide member 3 and one return return cylinder guide member 6 according to the present invention.

The forward path side cylindrical guide member 3 will be described. That is,
Each forward path side cylindrical guide member 3 is a swing bracket 31 on the right side as a roller swing member supported via a shaft portion 30 at a position near the center of the mounting frame 11 on the right side, and the swing bracket 31. Two right guide roller devices 32 held by
A swing bracket 34 on the left side as a roller swing member that is swingably supported via a shaft 33 at a position near the center of the mounting frame 13 on the left side, and swings on the swing bracket 34 on the left side. The two guide roller devices 35 on the left, which are supported so as to be possible, the erection bracket 36 erected between the mounting frames 11 and 13, and the support roller device 37 and the presser roller device 42 supported by the erection bracket 36. I have it.

Further, as shown in FIG. 3, the other outward guide cylinder members are upper brackets fixed to the mounting frame 11 side on the right side.
A right ear part guide roller device 39 held by 38 and a left ear part guide roller device 41 held by an upper bracket 40 are provided on the left mounting frame 13 side.

The swing brackets 31 and 34, which characterize the present embodiment, are shaft portions.
The endless belt 2 is oscillated along the traveling direction of the endless belt 2 via 30, 33, that is, in the X1 and X2 directions. The guide roller devices 32 and 35 described above are the endless belt 2
The center portion 20 in the cross-sectional direction of is deformed into a cylindrical shape. The support roller device 37 supports the bottom of the endless belt 2 on the outward path A side. The presser roller device 42 is
The ceiling portion of the endless belt 2 on the return path B side is pressed. The ear portion guide roller devices 39 and 41 sandwich the ear portions 21 and 22 of the endless belt 2 and overlap them in a palm shape.

Further, in the present embodiment, the first round answer guide member 3 has the first
As shown in the figure, the detection arm 43 is connected to the upper end of the right swing bracket 31, and the shaft is attached to the tip of the detection arm 43.
A detection roller 45 as a detection means is rotatably held via 44. A left detection arm 46 is coupled to the upper end of the left swing bracket 34, and a left detection roller as a detection means is attached to the tip of the left detection arm 46 via a shaft 47. 48 is rotatably supported.

Here, the connection structure of the right detection roller 45 and the right detection arm 43 will be described. That is, as shown in FIG. 4, the shaft 4 held by the nut 450 on the right detection arm 43.
A detection roller 45 is rotatably supported on the shaft 4 via a radial bearing 452, and the shaft 44 is fixed to the detection arm 43 via a thrust bearing 453. A coil spring 455 is provided between the detection roller 45 and the locking plate 454 that abuts the thrust bearing 453.
The detection roller 45 is biased toward the ear 21 side by the biasing force of the coil spring 455, and the thrust bearing 453 is biased toward the detection arm 43 side. The detection roller on the left side
The coil 48 is also supported by the detection arm 46 on the left side with a similar structure via a coil spring 455 and a thrust bearing 453.

It should be noted that the detection rollers 45 and 48 are provided with brim portions 45a and 48a for pressing and pinching the ears 21 and 22 of the endless belt 2.

The return-passage-side cylindrical guide member 6 has basically the same configuration as the forward-passage-side cylindrical guide member 3, and therefore a description thereof will be omitted. The same portions will be denoted by the same reference numerals as the forward-passage-side cylindrical guide member 3, and different portions will be described. To do. That is, the right detection arm on the return path B side
43, the detection arm 46 on the left side is biased upward by a biasing member such as a spring member (not shown) so as not to hang down by its own weight, whereby the detection roller 45 on the right side returns to the return path B endless belt 2
It is pressed against one ear 21 and the left detection roller 48
Is pressed against the other ear 22.

Next, the operation of the cylindrical conveyor belt device according to the present embodiment will be described together with the method of using it. First, a drive pulley (not shown) mounted on the base 1 is driven to drive the endless belt 2 along the fixed pipe 10 between the drive pulley and the driven pulley. Endless belt 2 is outward route A
When traveling on the side, the bottom portion of the endless belt 2 is supported by the support roller device 37 of the outward path side cylindrical guide member 3. At this time, the central portion 20 of the endless belt 2 in the cross-sectional direction is deformed into a cylindrical shape by the guide roller devices 32 and 35 to form the outward transport space 2a, and as shown in FIG. The ears 21 and 22 of the ears are the guide roller devices 39 and 41 of the ears.
It is sandwiched by and overlaps with the palm shape, whereby the transport space 2a for the outward path is sealed and the spillage of the transported object in the transport space 2a is prevented.

The same operation is basically achieved when the end belt 2 travels on the return path B side. That is, while the ceiling portion of the endless belt 2 traveling on the return path B side is pressed by the pressing roller device 42 of the return path side cylindrical guide member 6, the central portion 20 of the endless belt 2 in the cross-sectional direction is the guide roller device on the return path B side. Transport space 2b for the return path after being transformed into a cylindrical shape at 32 and 35
And the ears 21 of the endless belt 2 are sandwiched by the ears guide roller devices 39 and 41 on the backward path B side as well as the outward path A side and overlap in a palm shape, and the transport space 2b for the backward path is formed.
Is sealed.

By the way, when the load of the conveyed product acting on the endless belt 2 becomes uneven, the ears 21, 22 of the endless belt 2 overlapping with each other in a palm shape may be displaced vertically. In the present embodiment, the vertical shift of the ears 21 and 22 can be prevented. Before describing the prevention of the shift, for convenience of description, it is easy to understand that if the axial direction of the roller slidingly contacting the belt is changed, the belt is displaced in the width direction. A description will be given with reference to FIGS. That is, FIGS. 6A to 6C are plan views showing a state in which the roller 320 is applied to the flat belt A and slidably contacted thereto. In FIG. 6 (A), the roller 320 is in the traveling direction L1 of the flat belt A.
Shows a form in which is a right angle. According to the form of FIG. 6 (A), even if the belt tension F1 along the traveling direction L1 acts on the roller 320, the force for displacing the belt in the width direction thereof does not act. On the other hand, FIG. 6 (B) shows a mode in which the axial direction of the roller 320 is changed with respect to the traveling direction L1 of the flat belt A, and the side of the roller 320 facing the traveling direction L1 of the belt is defined as the leading end 320k. The side retracted with respect to the running direction L1 of the belt is shown as a rear end 320v. According to the form of FIG. 6 (B), the thrust force F2 due to the belt tension F1 acts in the direction perpendicular to the axis of the roller 320 at the belt sliding contact portion, and the component force F of the thrust force F2.
Due to the influence of 3, the flat belt A is displaced toward the rear end 320v side in the width direction when traveling. That is, the flat belt A is displaced in the T1 direction shown in FIG. 6 (B), which is one of the widthwise directions. The form shown in FIG. 6 (C) shows a form in which the axial direction of the roller 320 is changed to the direction opposite to that in FIG. 6 (B) with respect to the traveling direction L1 of the flat belt A. , The tip facing the running direction L1 of the belt is 320k ′
The side of the flat belt A that is retracted with respect to the traveling direction L1 is shown as a rear end 320v '. According to the form shown in FIG. 6 (C), the thrust F5 due to the belt tension F1 acts in the direction perpendicular to the axis on the belt sliding contact portion, and the flat belt A has its width due to the influence of the component force F6 of the thrust F5. In the direction, it is displaced toward the rear end 320v ′ side. That is, the flat belt A is displaced in the T2 direction shown in FIG. 6 (C) which is the other widthwise direction. In this way, in the belt, if the axial direction of the rotating shaft of the roller 320 slidingly contacting the belt is changed, the roller 320 in the width direction of the belt
The belt A is displaced while traveling toward the rear ends 320v and 320 '. Now, the case where the right ear portion 21 of the endless belt 2 on the outward path A side is displaced upward will be described as an example, that is, in the present embodiment, when the endless belt 2 travels, the endless belt 2 on the outward path A side. When the right ear 21 is displaced upward, the right detection roller 45 is lifted by the ear 21, and the right detection roller 45 is moved along the locus line P centered on the shaft 30 in FIG. Is displaced. As a result, the right detection arm 43, and by extension, the right swing bracket 31 swings around the shaft portion 30 in the traveling direction of the endless belt 2, that is, in the arrow X1 direction. Therefore, on the outward path A side, the rotary shaft 321 of the roller 320 of the guide roller device 32 held by the swing bracket 31 is centered around the shaft portion 30 as the swing bracket 31 swings in the arrow X1 direction. It swings in the direction of arrow X1 in FIG. In this way, the pivot 320 of the roller 320 in which the swing bracket 31 swings in the direction of the arrow X1
r is shown as position MA in FIG. According to the position MA, the axial center 320r of the roller 320 swings in the upward left direction in FIG. 5 to change the axial direction of the roller 320, and one end 320m of the roller 320 becomes the leading end in the traveling direction of the endless belt 2. Has become. In such a configuration in which the axial direction of the roller 320 is inclined, the direction in which the ear portion 21 is pushed down (T1 direction shown in FIG. 5) due to the influence of the thrust component generated by the tension of the endless belt 2 as in the above description. The endless belt 2 is displaced. The reason is that even though the endless belt 2 has a cylindrical shape, the roller 320 is tangential to the cylindrical shape.
Are in sliding contact with each other, and the thrust acts on the sliding contact portion as described above with reference to FIG. 6, and the traveling endless belt 2 moves in the direction of the rear end of the roller 320 due to the influence of the thrust component. Because it is displaced to. Therefore, the upward displacement of the ears 21, that is, the displacement of the ears 21 endless belt 2 away from the conveyance space 2a in the radial direction is suppressed or corrected. Therefore, as a result, the deviation of the ear portion 21 that is going upward from the outward path A is
After being restrained or corrected, the ears 21 return to the normal gastric shape.

Further, correction will be described when the ears 21 of the endless belt 2 on the outward path A are displaced downward, that is, when the ears 21 of the outward path A are retracted in the radial inward direction of the transport space 2a of the endless belt 2. In this case, the detection roller 45 on the outward path A side descends along the locus line P in FIG. As a result, the swing bracket 31 swings in the direction of arrow X2 in FIG. As the swing bracket 31 swings like this, the swing bracket 31
The rotation shaft 321 of the roller 320 of the two guide roller devices 32 on the right side held by the shaft 31 is centered on the shaft portion 30 and is indicated by the arrow in FIG.
Swing in the X2 direction. In this way, the swing bracket 31 is
The shaft core 320r of the roller 32 that is swung in the direction is shown as position MB in FIG. According to position MB, axis 320 of roller 320
In FIG. 5, r is changed to the right upward direction, and one end 320m of the roller 320 is made to be away from the traveling direction of the endless belt 2 to form a rear end 320 '. This position M
In the configuration shown in B, the endless belt 2 is displaced in the direction in which the ear 21 is pushed up (T2 direction shown in FIG. 5) under the influence of the thrust component force generated by the tension of the endless belt 2 as in the above description. The reason is that, as described above with reference to FIG. 6, the traveling endless belt 2 is affected by the component of thrust.
Is because it is displaced toward the rear end of the roller 320. As a result, the downward displacement of the ear portion 21 and the radial displacement from the transport space 2a are suppressed or corrected. Therefore, as a result, the displacement of the ear portion 21 is suppressed or corrected, and the ear portion 21 returns to the normal palm shape. In FIG. 5, the roller 320
The swing angle of is exaggerated for easy understanding. Further, the left ear portion 22 of the endless belt 2 on the outward path A side
The same action and effect can be obtained when is displaced upward. That is, when the left ear 22 is displaced upward, the left detection roller 48 is lifted, and the left detection arm 46,
As a result, the left swing bracket 34 swings around the shaft portion 33 in the traveling direction of the endless belt 2, that is, in the arrow X1 direction, and the upper left of the two left guide roller devices 35 as described above. The guide roller device 35 slides on the left side portion of the endless belt 2. At this time, the guide roller device 35
The roller 350 has an inclined axial direction. Therefore, similarly to the above, the upward displacement of the left ear 22 can be suppressed or corrected by the influence of the thrust generated in the belt sliding contact portion by the tension of the endless belt 2.

On the other hand, when the ears 21, 22 of the endless belt 2 are displaced on the return path B side, the same operation is performed, and the ears 21, 22 are moved.
The deviation is suppressed or corrected.

As described above, in this embodiment, the deviation of the ears 21, 22 can be suppressed or corrected on both the outward route A side and the backward route B side.
It is possible to solve the problem that the endless belt 2 travels with a large amount of deviation, and guide roller devices 32 and 35 for the forward path side cylindrical guide member 3 and the return path side cylindrical guide member 6 and the ear portion guide roller device.
It is possible to prevent the overload from acting on 39 and 41, prevent them from being damaged, and prevent overload on the endless belt 2.

[Other Embodiments] In the above-described embodiments, the right swing bracket 31 holds two guide roller devices 32 for forming a cylinder, respectively, and the left swing bracket 34 includes a guide for forming a cylinder. Two roller devices 35 are held, but the invention is not limited to this, and two or more, for example, many, may be held depending on the cylindrical diameter size of the endless belt 2.

Also, due to the vibration of the endless belt 2 during traveling,
On the outward path A side, the detection rollers 45, 48 may float from the ears 21, 22 of the endless belt 2, and on the return path B side, the detection rollers 45, 48 may descend from the ears 21, 22. In this case, the detection sensitivity for detecting the displacement of the ears 21 and 22 is reduced, and the detection roller 45 with respect to the displacement of the ears 21 and 22,
There is a problem that the followability of 48 decreases. Therefore, in this case, a weight is added to the detection arms 43 and 46 or the detection rollers 45 and 48 on the forward path A side, and a biasing member that biases the detection arms 43 and 46 on the backward path B on the return path B side. The urging force of can be increased. If you do this,
The followability of the detection rollers 45 and 48 with respect to the displacement of the ears 21 and 22 can be improved.

EFFECTS OF THE INVENTION According to the cylindrical conveyor belt device of the present invention, the direction of the rotation axis of the roller of the cylindrical guide member changes with the detection of the detection means, so that the end portion of the endless belt is displaced in the cross-sectional direction. It can be suppressed or corrected, and problems such as an increase in the load of the endless belt, damage to equipment such as a cylindrical guide member due to the increase in load, and deterioration of the sealability of the conveyance space can be improved.

[Brief description of drawings]

The drawings show one embodiment of the present invention, FIG. 1 is a perspective view of the main part of the apparatus, FIG. 2 is a cross-sectional view of the main part of the apparatus, and FIG. 3 is a cross-sectional view showing the vicinity of the ear guide roller device. FIG. 4 and FIG. 4 are cross-sectional views near the detection roller. FIG. 5 is a configuration diagram schematically showing the operating state of the main part. FIG. 6 is a configuration diagram for explaining the movement of the belt when the axial direction of the roller is changed by taking a flat belt as an example. In the figure, 1 is a base portion, 2 is an endless belt, 20 is a central portion, 2
1, 22 are ears (ends), 3 are outward guide cylinder guide members, 31, 3
Reference numeral 4 denotes a swing bracket (roller swing member), and 45 and 48 denote detection rollers (deviation detecting means).

Claims (1)

[Claims] 1. A base portion, an endless belt rotatably mounted on the base portion, and an endless belt disposed on the base portion. At least a part of the endless belt is overlapped with its end portions in a cross section in cross section. And a plurality of cylindrical guide members composed of a plurality of rollers arranged in the circumferential direction for deforming and guiding the central portion into a cylindrical shape, and at least one of the cylindrical guide members is provided. , A shift detecting means for detecting a shift of the end portion overlapping the palm shape of the endless belt, and a swingable support on a base portion for changing the direction of the rotation axis of at least a part of the rollers by a detection amount of the shift detecting means. A cylindrical bell having a roller swinging member that is rotated, and the roller whose axial direction is changed by the roller swinging member suppresses or corrects the deviation between the end portions. Conveyor system.