JP4473279B2 - Belt conveyor - Google Patents

Description

 The present invention relates to an energy-saving belt conveyor that does not require any electric power and that can move a conveyor belt while stepping on a pedal only when necessary to store elastic energy in an elastic energy storage means.

 Conventional belt conveyors generally include an endless conveyor belt that is driven by a driving roller that is rotated by an electric motor or a pneumatic motor to convey a workpiece placed on the upper surface of the conveyor belt. is there. For example, the belt conveyor according to the patent invention disclosed in Patent Document 1 has been devised to reduce damage to the conveyor belt, but a drive roller with a built-in motor, a drive roller connected to a motor with a speed reducer, etc. To drive the conveyor belt.

 However, since the conventional belt conveyors including the belt conveyor disclosed in Patent Document 1 are all driven by an electric motor, a pneumatic motor, or the like, electric power is eventually required. In particular, in a large factory or the like, there are many cases where the belt conveyor is continuously operated for 24 hours, and even when the workpiece is not conveyed, only the belt conveyor may be operated, so that a great amount of electric energy is wasted. In addition, fine control such as running the belt conveyor for the desired distance, transporting the work on the belt conveyor to the desired position, and feeding the belt conveyor for a minute distance is driven by a conventional electric motor, pneumatic motor, etc. In the system, the control system has become extremely complicated and difficult to implement.

 Therefore, as disclosed in Patent Document 2, the present inventor can wind the mainspring spring by manpower only when necessary to run the conveyor belt, and can greatly save energy without using any electric power. At the same time, a mainspring belt conveyor capable of easily performing fine control was invented, a patent application was filed for this invention, and a patent was obtained.

The mainspring belt conveyor described in Patent Document 2 converts the rotation of the input shaft by the input lever or the foot pedal into a plurality of rotations by a combination of a plurality of gears (rotational speed increasing transmission mechanism), and by this rotation, You can wind the mainspring spring to accumulate elastic energy and release it at a time to feed the conveyor belt a predetermined distance at a time, or you can return the input belt or foot pedal little by little to finely control the conveyor belt to send a minute distance It is an innovative belt conveyor that is possible and does not require any power.
Japanese Patent No. 3058637 Japanese Patent Laying-Open No. 2005-231815 (Patent No. 3887379)

 However, in the mainspring type belt conveyor disclosed in Patent Document 2 above, since a plurality of gears are combined as a rotation speed increasing transmission mechanism, the weight of the entire belt conveyor becomes heavy and inconvenient to move. Since it is somewhat expensive, the entire belt conveyor is slightly expensive. Furthermore, the rotation angle of the input lever or the foot pedal is relatively large at about 150 degrees, and if it is attempted to make it smaller, more gears are required, and the rotational speed increase transmission mechanism becomes larger and heavier. There was a problem of end.

 Accordingly, the present invention provides a belt conveyor that can feed a conveyor belt for a long time just by stepping on the pedal lightly, cheaper and more compactly while keeping the advantage of the belt conveyor that does not require any electric power. It is an object to do.

 A belt conveyor according to a first aspect of the present invention includes a pair of frames that are spaced apart from each other, a drive roller that is rotatably attached to a drive shaft that is pivotally supported by a drive side frame of the pair of frames, A driven roller rotatably attached to a driven shaft that is supported by a driven frame of a pair of frames; the drive roller; an endless travelable belt stretched over the driven roller; and the drive roller And a driven member that restricts the downward displacement of the conveyor belt and is attached to the drive side frame so as to be movable in a substantially vertical direction. When the input pedal and the input pedal are pressed and move in a substantially vertical direction, the elastic force is accumulated by extending or contracting along with the input pedal, and the pressing force of the input pedal is released. The stored elastic energy is released, and the elastic energy storage means for moving the input pedal in the reverse direction; and the rotational motion conversion means for converting the movement of the input pedal into the rotational motion of the first sprocket; A chain that transmits the rotational motion of the first sprocket to a second sprocket that transmits the rotational speed of the first sprocket to the drive shaft of the drive roller that increases the rotational speed of the first sprocket, and the elastic energy storage means has energy. The drive roller does not rotate when storing energy, and the one-way clutch is mounted so as to rotate when the elastic energy storage means releases the stored energy.

 Here, “an input pedal that is mounted so as to be movable in a substantially vertical direction” includes a pedal that can be depressed with a foot in a substantially vertical direction, as well as a pedal that is operated with a foot, It may be something to operate. The “elastic energy storage means” includes coil springs, rubber belts, rubber strings, etc. that extend in the moving direction when the input pedal is pressed and moved in a substantially vertical direction, and the input pedal is pressed in a substantially vertical direction. There are coil springs, leaf springs, rubber blocks, rubber pipes, etc. that contract in the direction of movement when moved. Furthermore, examples of the “rotational motion conversion means” include a combination of a long rack gear that moves integrally with the input pedal and a pinion gear meshed with the rack gear.

The elastic energy accumulating means is a coil spring that accumulates elastic energy in the parallel movement direction when the input pedal is pushed and moved in parallel.
The support member has a plurality of rotating rollers that rotate in the transport direction of the transport belt so that a frictional force is not applied even if the transport belt contacts the entire length or around the middle of the support member. It is provided.

Here, the “plurality of rotating rollers” may be one in which rotating rollers full of the width of the supporting member are arranged in a line along the longitudinal direction of the supporting member, or the supporting members along the longitudinal direction of the supporting member. Narrow rotation rollers may be arranged in a single row only at the central portion, or narrow rotation rollers may be arranged in two rows only at both end portions of the support member along the longitudinal direction of the support member. Alternatively, narrow rotation rollers may be arranged in three rows at the center portion and both end portions of the support member along the longitudinal direction of the support member.

In order to increase the inertia of the driving roller, a heavy material is used for the outer peripheral portion of the driving roller and / or the thickness of the wall surface of the outer peripheral portion of the driving roller is increased, and / or A weight is attached to the inside of the outer peripheral wall surface over the entire circumference.

Here, “a heavy material is used for the outer peripheral portion of the drive roller and / or the wall thickness of the outer peripheral portion of the drive roller is increased, and / or the entire inner periphery of the wall surface of the outer peripheral portion of the drive roller is extended. "Attached weight" means that only one of each of the three types of processing may be performed, or two of each of the three types of processing may be performed. This means that all types of processing may be performed.

Furthermore, since a plurality of support legs for supporting the conveyor belt at a necessary height are attached to both sides of the support member, when the support legs are provided in the drive side frame portion, the support side frame and the support member are supported. The legs can be integrated.

 A belt conveyor according to a second aspect of the invention includes a pair of frames that are spaced apart from each other, a driving roller that is rotatably attached to a driving shaft that is pivotally supported by a driving side frame of the pair of frames, A driven roller attached to a driven shaft supported by a driven frame of a pair of frames so as to be integrally rotatable; the drive roller; an endless travelable transport belt stretched around the driven roller; A support member that restricts a downward displacement of the transport belt between the drive roller and the driven roller and supports the back surface of the transport belt; and an input pedal that is attached to the drive side frame so as to be movable in parallel. When the input pedal is pushed and moved in parallel, it is stretched or shrunk in the parallel movement direction to accumulate elastic energy, and the force pushing the input pedal is released. Therefore, the stored elastic energy is released, and the elastic energy storage means for translating the input pedal in the reverse direction, and the parallel movement of the input pedal for a short distance by the rotational motion of the first sprocket at many rotational speeds. And a chain that transmits the rotational motion of the first sprocket to a second sprocket that is attached to the drive shaft so as to be integrally rotatable. The drive roller stores the elastic energy. The means does not rotate when the drive shaft rotates by storing the energy, and the elastic energy storage means releases the stored energy and rotates when the drive shaft rotates, via the one-way clutch. It is attached to the drive shaft.

 Here, “an input pedal that can be moved in parallel” includes not only a pedal that can be stepped on in the vertical direction but also a pedal that can move in an oblique direction. Not only what to operate but what to operate by pushing by hand may be used. The “elastic energy storage means” includes a coil spring, rubber belt, rubber string, etc. that extend in the parallel movement direction when the input pedal is pushed and moved in parallel, or parallel when the input pedal is pushed and moved in parallel. There are coil springs, leaf springs, rubber blocks, rubber pipes, etc. that contract in the moving direction. Further, examples of the “rotational motion conversion means” include a combination of a long rack gear that translates integrally with the input pedal and a small-diameter pinion gear meshed with the rack gear.

The elastic energy accumulating means is a coil spring that accumulates elastic energy in the parallel movement direction when the input pedal is pushed and moved in parallel.
The support member has a plurality of rotating rollers that rotate in the transport direction of the transport belt so that a frictional force is not applied even if the transport belt contacts the entire length or around the middle of the support member. It is provided.

Here, the “plurality of rotating rollers” may be one in which rotating rollers full of the width of the supporting member are arranged in a line along the longitudinal direction of the supporting member, or the supporting members along the longitudinal direction of the supporting member. Narrow rotation rollers may be arranged in a single row only at the central portion, or narrow rotation rollers may be arranged in two rows only at both end portions of the support member along the longitudinal direction of the support member. Alternatively, narrow rotation rollers may be arranged in three rows at the center portion and both end portions of the support member along the longitudinal direction of the support member.

In order to increase the inertia of the driving roller, a heavy material is used for the outer peripheral portion of the driving roller and / or the thickness of the wall surface of the outer peripheral portion of the driving roller is increased, and / or A weight is attached to the inside of the outer peripheral wall surface over the entire circumference.

Here, “a heavy material is used for the outer peripheral portion of the drive roller and / or the wall thickness of the outer peripheral portion of the drive roller is increased, and / or the entire inner periphery of the wall surface of the outer peripheral portion of the drive roller is extended. "Attached weight" means that only one of each of the three types of processing may be performed, or two of each of the three types of processing may be performed. This means that all types of processing may be performed.

Furthermore, a plurality of support legs for supporting the conveyor belt at a required height are attached to both sides of the support member. Here, when the support leg is provided in the drive side frame portion, the drive side frame and the support leg may be integrated.

A belt conveyor according to a third aspect of the present invention is the belt conveyor according to any one of the first to second aspects, wherein the rotational motion converting means meshes with a rack gear that moves in parallel with the input pedal, and the rack gear. The first sprocket is composed of a small-diameter pinion gear that rotates integrally with the first sprocket.

 A belt conveyor according to a first aspect of the present invention includes a pair of frames that are spaced apart from each other, a driving roller that is rotatably attached to a driving shaft that is pivotally supported by a driving side frame of the pair of frames, and a pair of frames. A driven roller rotatably mounted on a driven shaft that is supported by a driven side frame of the frame, an endless traveling belt that is stretched between the driving roller and the driven roller, and between the driving roller and the driven roller , The displacement of the conveyor belt in the downward direction is limited, a support member that receives the back side of the conveyor belt, an input pedal that is attached to the drive side frame so as to be movable in a substantially vertical direction, and the input pedal are pressed. Therefore, the elastic energy is accumulated by extending or contracting along with the movement, and the accumulated elastic energy is released by releasing the pressing force of the input pedal. Elastic energy storage means for moving the input pedal in the reverse direction, rotational motion conversion means for converting the movement of the input pedal into the rotational motion of the first sprocket, and the rotational motion of the first sprocket of the first sprocket. The chain that is transmitted to the drive shaft of the drive roller that increases its rotational speed over the rotational speed, the chain that transmits to the second sprocket, and the elastic energy storage means stores the energy, the drive roller does not rotate, and the elastic energy storage means And a one-way clutch mounted to rotate when discharging the stored energy.

When the input pedal is stepped on and moved in a direction substantially perpendicular to the drive side frame, the elastic energy accumulating means expands or contracts accordingly and accumulates elastic energy, and the rotational motion converting means moves the input pedal. Is converted into the rotational motion of the first sprocket, the second sprocket rotates, and the rotational motion is transmitted to the drive shaft of the driving roller whose rotational speed is greater than the rotational speed of the first sprocket. It is transmitted to the second sprocket by a chain that transmits to the sprocket.

As a result, the drive shaft rotates many times, but the drive roller does not rotate so that the drive roller does not rotate when the elastic energy storage means stores energy. do not do. In this state, if the foot is released from the input pedal and the pressing force is released, the elastic energy accumulated by the elastic energy accumulating means is released, the input pedal is moved in the reverse direction, and the rotational motion converting means is used to move the input pedal. Driving in the reverse direction is converted into the rotational motion of the first sprocket, the first sprocket rotates in the reverse direction, and the rotational motion increases the rotational speed of the first sprocket. It is transmitted to the second sprocket by a chain that transmits to the second sprocket that transmits to the shaft.

In addition, since the drive shaft rotates in the reverse direction and the drive roller is attached so that it rotates when the elastic energy storage means releases the stored energy, the drive roller rotates at a number of rotations. Thus, the conveyor belt travels a long distance. Here, the belt conveyor according to the present invention converts the movement of the input pedal into a rotational motion by the rotational motion converting means, and increases the rotational speed of the first sprocket to be higher than the rotational speed of the first sprocket. The mainspring type belt conveyor disclosed in the above-mentioned Patent Document 2 because the rotational motion of a large number of rotations is transmitted to the drive shaft by only one chain that is transmitted to the second sprocket that is transmitted to the drive shaft of the drive roller. Compared with a rotation speed increase transmission mechanism comprising a plurality of gears, the structure is very simple. In addition, while gears (gears) are commercially available for 3000 to 4000 yen each, sprockets and chains can be obtained for about 1000 yen per set, so the entire device is manufactured at a very low cost. And it is extremely lightweight.

 In addition, the belt conveyor according to the present invention can also feed the conveyor belt by a minute distance (inching feed) by weakening the force of pushing the foot or hand little by little without releasing from the input pedal and returning the input pedal little by little. Is also possible.

 In this way, a belt conveyor that does not require any electric power, is lighter, cheaper and more compact, can lightly feed the pedal, and can feed the conveyor belt for a long time just by stepping and releasing it for a short distance.

The elastic energy storage means is a coil spring that stores elastic energy in the parallel movement direction when the input pedal is pushed to move in parallel. Therefore, since the coil spring is inexpensive and strong, and is easily available with excellent elasticity, it can be stably used as an elastic energy storage means. And the structure of the whole belt conveyor becomes simpler by making it a structure which contracts a coil spring and accumulate | stores elastic energy.

Normally, the conveyor belt is tensioned on the driving roller and the driven roller, and is lifted from the support member. However, when a heavy object is placed on the conveyor belt, the conveyor belt The part is bent and the back surface of the conveyor belt comes into contact with the support member. When the conveyor belt is run in this state, the back surface of the conveyor belt moves while rubbing against the support member, and a non-slip material is applied to the back surface of the conveyor belt so that the conveyed object does not slip on the surface of the conveyor belt. Uses a slippery material to reduce frictional resistance, but it still wears the back of the conveyor belt.

However, in the belt conveyor according to the present invention, the support member is provided with a plurality of rotating rollers that rotate in the conveying direction of the conveying belt. Therefore, the life of the conveyor belt can be significantly extended because it hardly needs to be worn. Further, since the resistance applied to the transport belt is reduced, the travel distance is further increased when the same driving energy is applied.
Here, the plurality of rotating rollers may be provided over the entire length of the support member, but the portions near the drive roller and the driven roller at both ends are less bent because the conveyance belt is less bent and does not contact the support member. It is also effective to provide a part around the middle easily.

Further, in order to increase the inertia of the driving roller, a heavy material is used for the outer peripheral portion of the driving roller and / or the wall thickness of the outer peripheral portion of the driving roller is increased and / or the wall surface of the outer peripheral portion of the driving roller is increased. A weight is attached to the entire circumference of the inside. Here, “a heavy material is used for the outer peripheral portion of the drive roller and / or the wall thickness of the outer peripheral portion of the drive roller is increased, and / or the entire inner periphery of the wall surface of the outer peripheral portion of the drive roller is extended. "Attached weight" means that only one of each of the three types of processing may be performed, or two of each of the three types of processing may be performed. This means that all types of processing may be performed.

As a result, when elastic energy is released from the elastic energy storage means and the driving roller rotates, the driving roller rotates several times the number of rotations due to the elastic energy released by inertial force, and the conveyor belt travels a longer distance. Can do.

Furthermore, a plurality of support legs for supporting the conveyor belt at a required height are attached to both sides of the support member. Here, when the support leg is provided in the drive side frame portion, the drive side frame and the support leg may be integrated.

Therefore, at a certain height, it is possible to support the conveyor belt at the required height by making a pair of frames high. However, there is a limit to this, especially on the side of the driven frame where only the driven roller and the driven shaft are attached. In this case, the frame material is wasted. Therefore, the conveyor belt can be supported at a necessary height by attaching support legs having a necessary height on both sides of the support member that is spanned between the pair of frames to support the conveyor belt.

Here, the conveyor belt is not necessarily supported substantially horizontally, and is supported at an angle, that is, the driven roller side is high or the driven roller side is low as necessary. If the width of the support member is wider than the width of the conveyor belt and both side surfaces of the support member protrude from the conveyor belt, a plurality of support legs can be directly attached to both sides of the support member. Is smaller than the width of the conveyor belt, and both side surfaces of the support member are retracted from the conveyor belt, the intermediate members corresponding to the number of support legs are attached to the both side surfaces of the support member so as to protrude from the conveyor belt. It is necessary to attach support legs to the.

 A belt conveyor according to a second aspect of the present invention includes a pair of frames that are spaced apart from each other, a drive roller that is rotatably attached to a drive shaft that is pivotally supported by a drive side frame of the pair of frames, and a pair of frames. A driven roller that is rotatably supported by a driven shaft that is supported by a driven frame of the frame, a drive roller, an endless traveling belt that is stretched between the driven roller, a drive roller, and a driven roller In between, the support belt supporting the back surface of the conveyor belt is limited, the input pedal is attached to the drive side frame so as to be movable in parallel, and the input pedal is pushed to translate in parallel. The elastic energy is accumulated by extending or contracting in the parallel movement direction, and the accumulated elastic energy is released by releasing the force pushing the input pedal. Elastic energy storage means for translating the force pedal in the reverse direction, rotary motion converting means for converting the short distance of translation of the input pedal into rotational motion of many revolutions of the first sprocket, and the first sprocket And a chain that transmits the rotational movement of the second sprocket attached to the drive shaft so as to rotate integrally therewith, and the drive roller does not rotate when the drive shaft rotates because the elastic energy storage means stores energy, The elastic energy storage means is attached to the drive shaft via a one-way clutch so as to rotate when the drive shaft rotates by releasing the stored energy.

 Here, “an input pedal that can be moved in parallel” includes not only a pedal that can be stepped on in the vertical direction but also a pedal that can move in an oblique direction. Not only what to operate but what to operate by pushing by hand may be used. The “elastic energy storage means” includes a coil spring, rubber belt, rubber string, etc. that extend in the parallel movement direction when the input pedal is pushed and moved in parallel, or parallel when the input pedal is pushed and moved in parallel. There are coil springs, leaf springs, rubber blocks, rubber pipes, etc. that contract in the moving direction. Further, examples of the “rotational motion conversion means” include a combination of a long rack gear that translates integrally with the input pedal and a small-diameter pinion gear meshed with the rack gear.

With such a configuration, when the input pedal is stepped on with a foot and translated with respect to the drive side frame, the elastic energy accumulating means expands or contracts in the parallel movement direction and accumulates elastic energy, and the rotational motion converting means The translation of the input pedal for a short distance is converted into the rotational motion of the first sprocket at multiple rotational speeds, the first sprocket rotates at multiple rotational speeds, and the rotational motion is transmitted by the chain to the second sprocket. Is done.

 As a result, the second sprocket attached to the drive shaft so as to rotate integrally rotates with a large number of rotations. Therefore, the drive shaft also rotates with a large number of rotations integrally. Is accumulated on the drive shaft via a one-way clutch so that the drive shaft does not rotate when the drive shaft rotates, so that the drive roller does not rotate and therefore the conveyor belt does not travel.

 In this state, when the force pushing the input pedal is released by releasing the foot or hand from the input pedal, the elastic energy accumulated in the elastic energy accumulating means is released, causing the input pedal to translate in the reverse direction and rotate. The conversion means converts the parallel movement of the input pedal in a small distance in the reverse direction into the rotational motion of the first sprocket at a large number of rotations, and the first sprocket rotates at a large number of rotations in the reverse direction. Motion is transmitted by the chain to the second sprocket.

 As a result, the second sprocket, which is attached to the drive shaft so as to be integrally rotatable, rotates a number of rotations in the reverse direction, so that the drive shaft also rotates a large number of rotations in the reverse direction, and the drive roller is elastic. Since the energy storage means releases the stored energy and the drive shaft rotates, the drive roller is attached to the drive shaft via a one-way clutch so that the drive roller rotates at a number of rotations and is conveyed. Travel a long distance.

 Here, the belt conveyor according to the present invention converts a short distance parallel movement of the input pedal into a rotational motion of a number of rotations of the first sprocket by the rotational motion converting means, and a drive shaft with only one chain. Since the rotational motion of a large number of rotations is transmitted to the second sprocket attached to the motor, compared to the rotation speed increase transmission mechanism comprising a plurality of gears of the mainspring type belt conveyor disclosed in Patent Document 2, The structure is extremely simple. In addition, while gears (gears) are commercially available for 3000 to 4000 yen each, sprockets and chains can be obtained for about 1000 yen per set, so the entire device is manufactured at a very low cost. And it is extremely lightweight.

 In addition, the belt conveyor according to the present invention can also feed the conveyor belt by a minute distance (inching feed) by weakening the force of pushing the foot or hand little by little without releasing from the input pedal and returning the input pedal little by little. Is also possible.

 In this way, a belt conveyor that does not require any electric power, is lighter, cheaper and more compact, can lightly feed the pedal, and can feed the conveyor belt for a long time just by stepping and releasing it for a short distance.

The elastic energy storage means is a coil spring that stores elastic energy in the parallel movement direction when the input pedal is pushed to move in parallel. Therefore, since the coil spring is inexpensive and strong, and is easily available with excellent elasticity, it can be stably used as an elastic energy storage means. And the structure of the whole belt conveyor becomes simpler by making it a structure which contracts a coil spring and accumulate | stores elastic energy.

Normally, the conveyor belt is tensioned on the driving roller and the driven roller, and is lifted from the support member. However, when a heavy object is placed on the conveyor belt, the conveyor belt The part is bent and the back surface of the conveyor belt comes into contact with the support member. When the conveyor belt is run in this state, the back surface of the conveyor belt moves while rubbing against the support member, and a non-slip material is applied to the back surface of the conveyor belt so that the conveyed object does not slip on the surface of the conveyor belt. Uses a slippery material to reduce frictional resistance, but it still wears the back of the conveyor belt.

However, in the belt conveyor according to the present invention, the support member is provided with a plurality of rotating rollers that rotate in the conveying direction of the conveying belt. Therefore, the life of the conveyor belt can be significantly extended because it hardly needs to be worn. Further, since the resistance applied to the transport belt is reduced, the travel distance is further increased when the same driving energy is applied.

Here, the plurality of rotating rollers may be provided over the entire length of the support member, but the portions near the drive roller and the driven roller at both ends are less bent because the conveyance belt is less bent and does not contact the support member. It is also effective to provide a part around the middle easily.

Further, in order to increase the inertia of the driving roller, a heavy material is used for the outer peripheral portion of the driving roller and / or the wall thickness of the outer peripheral portion of the driving roller is increased and / or the wall surface of the outer peripheral portion of the driving roller is increased. A weight is attached to the entire circumference of the inside. Here, “a heavy material is used for the outer peripheral portion of the drive roller and / or the wall thickness of the outer peripheral portion of the drive roller is increased, and / or the entire inner periphery of the wall surface of the outer peripheral portion of the drive roller is extended. "Attached weight" means that only one of each of the three types of processing may be performed, or two of each of the three types of processing may be performed. This means that all types of processing may be performed.
As a result, when elastic energy is released from the elastic energy storage means and the driving roller rotates, the driving roller rotates several times the number of rotations due to the elastic energy released by inertial force, and the conveyor belt travels a longer distance. Can do.

Furthermore, a plurality of support legs for supporting the conveyor belt at a required height are attached to both sides of the support member. Here, when the support leg is provided in the drive side frame portion, the drive side frame and the support leg may be integrated. Therefore, at a certain height, it is possible to support the conveyor belt at the required height by making a pair of frames high. However, there is a limit to this, especially on the side of the driven frame where only the driven roller and the driven shaft are attached. In this case, the frame material is wasted. Therefore, the conveyor belt can be supported at a necessary height by attaching support legs having a necessary height on both sides of the support member that is spanned between the pair of frames to support the conveyor belt.

Here, the conveyor belt is not necessarily supported substantially horizontally, and is supported at an angle, that is, the driven roller side is high or the driven roller side is low as necessary. If the width of the support member is wider than the width of the conveyor belt and both side surfaces of the support member protrude from the conveyor belt, a plurality of support legs can be directly attached to both sides of the support member. Is smaller than the width of the conveyor belt, and both side surfaces of the support member are retracted from the conveyor belt, the intermediate members corresponding to the number of support legs are attached to the both side surfaces of the support member so as to protrude from the conveyor belt. It is necessary to attach support legs to the.

In the belt conveyor according to the third aspect of the present invention, the rotational motion converting means includes a rack gear that translates integrally with the input pedal, and a small-diameter pinion gear that meshes with the rack gear and rotates integrally with the first sprocket.

 Thus, by configuring the rotary motion conversion means from the rack gear that translates integrally with the input pedal, and the small-diameter pinion gear that meshes with the rack gear and rotates integrally with the first sprocket, it can be easily configured with a simple configuration. A short distance translation of the input pedal can be converted into a rotational motion of the first sprocket at many rotational speeds.

 In this way, a belt conveyor that does not require any electric power, is lighter, cheaper and more compact, can lightly feed the pedal, and can feed the conveyor belt for a long time just by stepping and releasing it for a short distance.

 Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1
First, Embodiment 1 of the present invention will be described with reference to FIGS.

 Fig.1 (a) is a top view which abbreviate | omits two places of the intermediate part of a belt conveyor, and shows the whole structure of the belt conveyor which concerns on Embodiment 1 of this invention, (b) is a front view. FIG. 2 is a longitudinal sectional view showing the configuration of the drive portion of the belt conveyor according to the first embodiment of the present invention as seen from the front side. FIG. 3 is a longitudinal sectional view showing the configuration of the driving portion of the belt conveyor according to the first embodiment of the present invention as viewed from the right side.

 FIG. 4 (a) is an enlarged longitudinal sectional view showing the inside of the inner frame of the drive side frame of the belt conveyor according to the first embodiment of the present invention, and FIG. 4 (b) shows the belt conveyor according to the first embodiment of the present invention. It is a perspective view which shows the rotating roller unit used. FIG. 5 is an enlarged plan view showing the vicinity of the drive side frame of the belt conveyor according to Embodiment 1 of the present invention. FIG. 6 is an enlarged plan view showing the vicinity of the driven frame of the belt conveyor according to Embodiment 1 of the present invention. FIG. 7 is an enlarged perspective view showing the vicinity of the driven roller of the belt conveyor according to Embodiment 1 of the present invention.

 As shown in FIGS. 1A and 1B, a belt conveyor 1 according to the first embodiment includes a drive side frame 2 as one of a pair of frames formed by assembling steel plates in a substantially quadrangular prism shape. The driven side frame 3 as the other of the pair of frames made of two steel plates opposed to each other, and a length of 1.6 mm as a support member fixed at both ends to the pair of frames 2 and 3 A plurality of support legs 30A, 31A, 32A attached to the length steel plate 5, the vicinity of the driven side frame 3 on the side surface of the long steel plate 5, and the middle of the drive side frame 2 and the driven side frame 3 one by one. , 33A, 30B, 31B, 32B, and 33B are used as basic skeletons.

 A drive shaft 6a is horizontally supported on the drive side frame 2, and a drive roller 6 made of steel is attached to the drive shaft 6a so as to be integrally rotatable. Similarly, a driven shaft 7a is horizontally attached to the driven side frame 3. The driven roller 7 made of aluminum is attached to the drive roller 6 and the driven roller 7 so that the endless traveling belt 4 is stretched around the drive roller 6 and the driven roller 7. An aluminum tension roller 8 is rotatably supported at the inner end of the drive side frame 2 in order to stretch the endless transport belt 4 without slack.

The plurality of support legs 30A, 31A, 32A, 33A, 30B, 31B, 32B, and 33B so as to hide the lower part of the endless transport belt 4 that passes under the long steel plate 5 as a support member. In addition, a pair of U-shaped members 30A and 30B made of steel plates fixed to both side surfaces of the long steel plate 5, and a pair of thin rectangular column shapes made of steel plates fixed to the bottom surfaces of the U-shaped members 30A and 30B. Leg portions 31A, 31B (in FIG. 1B, the other leg portions 31A, 31B are hidden and cannot be seen), and support plates 32A, 32B fixed to the lower ends of each pair of leg portions 31A, 31B; Each of the support plates 32A and 32B includes a pair of grounding portions 33A and 33B attached to both ends of the support plates 32A and 32B so as to be adjustable in height.
As a result, as shown in the plan view of FIG. 1 (a), the support plates 32A and 32B spread to the left and right and are grounded, and the conveyor belt 4 can be supported at a predetermined height with sufficient stability. it can.

 An input pedal 10 is attached to the drive side frame 2 so as to be movable in a substantially vertical direction. As shown by a broken line in FIG. The coil spring 11 as elastic energy storage means that contracts and stores elastic energy by being stepped on (or pushed by hand), a rack gear 12 that translates integrally with the input pedal 10, and the rack gear 12 A small-diameter pinion gear 13 that meshes, a first sprocket 14 that rotates integrally with the small-diameter pinion gear 13, a second sprocket 16 that rotates integrally with the drive shaft 6 a, and the first sprocket 14 to the second sprocket 16. A chain 15 for transmitting the rotational force is incorporated.

 With such a configuration, when the input pedal 10 is lowered by a small distance, the small-diameter pinion gear 13 rotates by a large number of rotations, and thus the first sprocket 14 also rotates by a large number of rotations. Further, when the force to depress the input pedal 10 is released, the coil spring 11 that has contracted and accumulated elastic energy extends to release elastic energy, and the small-diameter pinion gear 13 rotates in the opposite direction by a large number of rotations, thereby The first sprocket 14 also rotates in the reverse direction by a large number of rotations. Therefore, the rack gear 12 and the small-diameter pinion gear 13 constitute the rotational motion conversion means in the present invention.

 Then, the rotation of the first sprocket 14 is transmitted to the second sprocket 16 via the chain 15, and the drive shaft 6 a rotates many times as the second sprocket 16 rotates many times. However, since the drive roller 6 is attached to the drive shaft 6a via a one-way clutch as will be described later, the drive roller 6 does not rotate when the input pedal 10 is lowered, and rotates when the coil spring 11 extends to push up the input pedal 10. To do. As a result, the endless transport belt 4 stretched between the driving roller 6 and the driven roller 7 travels. Therefore, even if the distance to which the input pedal 10 is pushed down is small, the conveyor belt 4 can be fed long.

 The drive mechanism in the belt conveyor 1 according to the first embodiment will be described in more detail with reference to FIGS. As shown in FIG. 2, the drive side frame 2 is composed of three frames, an upper frame 2A, a lower frame 2B, and an inner frame 2C. Of these, a columnar first slide shaft 17 and a second slide shaft 18 are erected in the lower frame 2B. The pedal body 10b made of a steel plate of the input pedal 10 has a cylindrical first slide shaft 17b. One slide portion 10c and a second slide portion 10d are provided.

 The first slide portion 10 c is slidably fitted to the first slide shaft 17, and the second slide portion 10 d is slidably fitted to the second slide shaft 18. Thus, since the pedal body 10b has two slide mechanisms, the input pedal 10 can smoothly move in the vertical direction without rattling. A coil spring 11 is fitted on the first slide shaft 17, and the upper end of the coil spring 11 is suppressed by the first slide portion 10c.

 Therefore, when force is applied to the pedal portion 10a of the input pedal 10 and the input pedal 10 is lowered in the vertical direction, the coil spring 11 is compressed by the first slide portion 10c of the pedal body 10b, and accumulates elastic energy. Shrink.

 Here, the lower limit of the vertical movement of the input pedal 10 is determined by the lower end of the stop block 10e fixed to the stop bolt 22 by two bolts contacting the pedal body 10b. The upper limit of the movement is determined by the contact of the flange portion of the first slide portion 10c of the pedal body 10b with the adjustment plate 20. The adjustment plate 20 can be moved up and down along the adjustment bolt 21 with respect to the lower frame 2B. Therefore, the movement stroke of the input pedal 10 can be freely set by adjusting the position of the upper end of the stop bolt 22 and the vertical position of the adjustment plate 19.

 Further, as shown in FIG. 2, the rack gear 12 is firmly attached and fixed to the steel plate main body 10b of the input pedal 10 by means of a mounting plate 23 and two mounting bolts 24A and 24B. The rack gear 12 is meshed with a pinion gear (spur gear) 13 having a small diameter of 16 teeth / PCD (reference circle diameter) φ24 mm supported by the gear shaft 13a. A first sprocket 14 having 20 teeth and PCD φ 60.89 mm is supported on the gear shaft 13 a so as to be rotatable integrally with the pinion gear 13.

 Further, an endless chain 15 is spanned between the first sprocket 14 and a second sprocket 16 having the same number of teeth of 20 and PCD φ 60.89 mm that is pivotally supported in the upper frame 2A. The second sprocket 16 is pivotally supported in the upper frame 2A so as to rotate integrally with the drive shaft 6a.

 Accordingly, when force is applied to the pedal portion 10a of the input pedal 10 and the input pedal 10 is lowered in the vertical direction, the coil spring 11 contracts as described above, and at the same time, the rack gear 12 is integrated with the input pedal 10 in the vertical direction. The pinion gear 13 is lowered to rotate the first sprocket 14 by the same number of rotations, and the rotation is transmitted to the second sprocket 16 by the chain 15, and the second sprocket 16 also has the number of teeth and PCD. Is the same as that of the first sprocket 14, and as a result, the drive shaft 6a integrally rotates the same number of revolutions.

 Here, the detailed structure in the upper frame 2A will be described with reference to FIG. As shown in FIG. 3, inside the upper frame 2A of the driving side frame 2, a steel driving roller 6 is driven horizontally supported by two ball bearing bearings 25 on the upper frame 2A at both ends. The shaft 6 a is attached to the shaft 6 a through a one-way clutch 26 so as to be integrally rotatable, and the conveying belt 4 is hung on the outer periphery of the driving roller 6.

 In the belt conveyor 1 according to the first embodiment, the thickness of the outer peripheral wall surface of the steel drive roller 6 is sufficiently thick, and the inertia of the rotation is sufficiently obtained by the weight of the drive roller 6 itself. Since the travel distance of the conveying belt 4 due to the rotation of the driving roller 6 is sufficiently long, no weight is particularly attached to the inside of the driving roller 6, but a weight is attached to the inner surface of the outer peripheral portion of the driving roller 6 as necessary. Thus, the outer periphery of the drive roller 6 can be made heavier and the inertia during rotation can be increased.

 Here, the one-way clutch 26 is rotated when the drive shaft 6a rotates at the same time as the input pedal 10 descends in the vertical direction and the coil spring 11 contracts as described above, that is, the drive shaft 6a turns clockwise in FIG. When rotating in the rotation direction), the rotation force of the drive shaft 6 a is attached so as not to be transmitted to the drive roller 6. As a result, the drive roller 6 does not rotate when the input pedal 10 is depressed, and the conveyor belt 4 does not travel. This prevents the conveyor belt 4 from traveling in the direction opposite to the normal traveling direction when the input pedal 10 is depressed. Therefore, the belt conveyor 1 is easy to use.

 On the other hand, when the force that pushes the input pedal 10 is released, the contracted coil spring 11 releases the accumulated elastic energy and expands, and when the input pedal 10 is pushed up, the rack gear 12 is vertically integrated with the input pedal 10. The first sprocket 14 is rotated in the reverse direction by the same number of rotations, and the rotation is transmitted to the second sprocket 16 by the chain 15. As a result of the same sprocket 16 rotating in the reverse direction, the drive shaft 6a integrally rotates in the reverse direction by the same rotational speed.

 When the drive shaft 6a rotates in the reverse direction as described above, the one-way clutch 26 is attached so as to transmit the rotational force of the drive shaft 6a to the drive roller 6. Therefore, the drive roller 6 is connected to the drive shaft 6a. 2 is rotated counterclockwise (counterclockwise direction) in FIG. 2 and further rotated several times by the inertial force due to the weight of the driving roller 6, so that the conveyor belt 4 travels a long distance. .

 Further, as shown in FIG. 4 (a), inside the inner frame 2C of the driving side frame 2, an aluminum tension roller 8 is paired with respect to the central axis 8a fixed to the inner frame 2C. It is supported horizontally by a ball bearing bearing 25, and the conveyor belt 4 is stretched by applying tension to the conveyor belt 4. Further, when the conveyor belt 4 meanders during traveling and shifts from the center of the driving roller 6 or the driven roller 7 to the left and right, the direction of the driven roller 7 is adjusted as will be described later. If this does not solve the problem, either or both of the pair of bolts 8b shown in FIG. 4A are rotated to adjust the vertical direction of the central shaft 8a.

 As shown in FIGS. 1, 2, and 4, a small plastic roller as a plurality of rotating rollers supported by a plastic main body 42 is placed on a long steel plate 5 as a support member. A plurality of mini-roller units 40 each having ten 41 are arranged in three rows.

 As shown in FIG. 4B, the mini roller unit 40 includes a box-shaped plastic main body 42, and 10 small plastic rollers 41 as a plurality of rotating rollers are rotatably supported. It will be. A roller shaft 41a protrudes from both ends of each small roller 41. The roller shaft 41a is fitted into bearing portions 42a provided on both side surfaces of the plastic main body 42, whereby each small roller 41 is provided. Is pivotally supported without being detached from the plastic body 42.

 In the belt conveyor 1 according to the first embodiment, the plastic mini-roller unit 40 is arranged in three rows using a Colocon (registered trademark) mini KB150 of Okura Transporting Machine Co., Ltd. Between the mini roller units 40, as shown in FIGS. 4 (a) and 5, a thick partition steel plate 46 is fixed on the long steel plate 5 in four rows as a partition.

 Since the small plastic rollers 41 as the plurality of rotating rollers are arranged over the entire length of the long steel plate 5 as the support member, a heavy conveyed object is placed on the conveyor belt 4 and the conveyor belt. Even when the belt 4 is bent, the belt 4 is supported in contact with the small plastic roller 41 that is rotatable without directly contacting the long steel plate 5. You can travel long distances smoothly.

 Next, the configuration of the driven side frame 3 and the vicinity thereof will be described with reference to FIGS. As shown in FIGS. 6 and 7, the driven frame 3 includes a pair of members 3a, a member 3b having a pair of shaft receiving portions fixed to a flat plate, and a pair of bolts 3c. A columnar driven shaft 7a is fixed between the pair of members 3a, and an aluminum driven roller 7 is rotatably attached to the driven shaft 7a.

 Further, two sets of bolts 44 and nuts 45 are threaded through the member 3b, and the tips of the two bolts 44 are in contact with a pressing plate 43 made of a steel plate. The pressing plate 43 is a plate material for pressing a large number of mini roller units 40 arranged over the entire length of the long steel plate 5 without any gap, and the position thereof is adjusted by two sets of bolts 44 and nuts 45. By doing so, it can be adjusted freely.

 And even if it exists in the state hold | suppressed by the pressing plate 43 in this way, one mini-roller of arbitrary positions is selected from many mini-roller units 40 arrange | positioned over the full length of the long steel plate 5. FIG. Since it is easy to remove the unit 40 and fit the new mini roller unit 40 into the space created by the removal, at least one of the ten small rollers 41 of the mini roller unit 40 is consumed and rotated. If it does not occur, the mini roller unit 40 can be removed and a new mini roller unit 40 can be fitted to immediately return to the original state.

 Further, the tip ends of the pair of bolts 3c are in contact with the member 3b, and by rotating the pair of bolts 3c to separate the pair of members 3a from the member 3b, the driven roller 7 is separated from the member 3b. Thus, it is possible to apply tension to the conveyor belt 4 that is stretched around the driven roller 7. Further, in the case where the conveyor belt 4 meanders during traveling and shifts from the center of the driven roller 7 to the left or right, one or both of the pair of bolts 3c are rotated to move the driven shaft 7a in the horizontal direction. By adjusting the inclination of the belt, it is possible to eliminate the situation in which the conveyor belt 4 shifts during traveling.

 The usage method of the belt conveyor 1 which concerns on this Embodiment 1 which has such a structure is demonstrated with reference to FIG. In the initial state, as shown in FIG. 2, the coil spring 11 is in a naturally extended state, and the input pedal 10 has a stroke at a position where the cylindrical first slide portion 10 c is in contact with the adjustment plate 20. At the top. Here, the vertical movement stroke of the input pedal 10 is set to 150 mm by the adjustment bolt 21 and the stop bolt 22.

 From this state, the operator places the conveyed product with both hands on the driving side frame 2 on the conveying belt 4 and steps on the pedal portion 10a of the input pedal 10 with his / her foot, whereby the pedal body 10b of the input pedal 10 The stop block 10e fixed to the pedal body 10b with two bolts is pushed down 150 mm until the lower end of the stop block 10e contacts the stop bolt 22. As a result, the coil spring 11 contracts by 150 mm, and at the same time, the rack gear 12 is lowered integrally with the input pedal 10 in the vertical direction to rotate the pinion gear 13, and the pinion gear 13 rotates about two times.

 Therefore, the first sprocket 14 also rotates about twice, and the rotation is transmitted to the second sprocket 16 by the chain 15, and the second sprocket 16 has the same number of teeth and the same PCD as the first sprocket 14. Therefore, as a result of approximately two rotations, the drive shaft 6a also integrally rotates approximately two times. However, as described above, the drive roller 6 does not rotate due to the action of the one-way clutch 26, and the conveyor belt 4 does not travel. It is possible to prevent a situation in which the conveyor belt 4 travels in the direction opposite to the normal traveling direction when the pedal is stepped on, and the conveyed object placed on the conveyor belt 4 by the operator falls.

 Subsequently, when the operator lifts his / her foot from the pedal portion 10a of the input pedal 10, the contracted coil spring 11 releases and expands the accumulated elastic energy, pushes up the input pedal 10 by 150 mm, and the rack gear 12 inputs. The pinion gear 13 is lifted by 150 mm in the vertical direction integrally with the pedal 10 and the pinion gear 13 is rotated about twice in the reverse direction. As a result, the first sprocket 14 is rotated about twice in the reverse direction. 16 and the second sprocket 16 also rotates about 2 times in the reverse direction. As a result, the drive shaft 6a integrally rotates about 2 times in the reverse direction.

 When the drive shaft 6a rotates in the reverse direction as described above, the one-way clutch 26 is attached so as to transmit the rotational force of the drive shaft 6a to the drive roller 6. Therefore, the drive roller 6 is left in FIG. It rotates about twice (counterclockwise direction), and further rotates about 8 times several times by the inertial force due to the weight of the driving roller 6. Here, since the outer diameter of the driving roller 6 is φ139 mm and the outer periphery is about 437 mm, the conveying belt 4 travels by about 437 mm × 8 = about 3500 mm = about 3.5 m, and the conveyed object reaches about 3.5 m ahead. Transport at once.

 In addition, as described above, the small plastic rollers 41 as the plurality of rotating rollers are disposed over the entire length of the long steel plate 5 as the support member, so that a heavy conveyed object is placed on the conveyor belt 4. Even if the transport belt 4 is bent and supported by the small plastic roller 41 that is rotatable without directly contacting the long steel plate 5, even when a heavy transport object is placed, The conveyor belt 4 is smoothly conveyed to about 3.5 m ahead.

 In this manner, in the belt conveyor 1 according to the first embodiment, the conveyor belt 4 is supported at a required height and does not require any power, and is lighter, cheaper and more compact. 1, the conveyor belt 4 can be fed longer by simply stepping on the input pedal 10 and releasing it.

 Further, the belt conveyor 1 according to the first embodiment is considered to be used as a mobile installation type belt conveyor by taking advantage of the fact that it does not require electric power and is light as a whole. For example, in the event of a flood due to a river bank breach, it can be used for emergencies such as transporting to the site and transporting sandbags.

 Furthermore, as a function and effect peculiar to the belt conveyor 1 according to the first embodiment, a plurality of mini roller units 40 shown in FIG. 4B are used as a plurality of rotating rollers, and the long steel plate 5 as a support member is provided. Since it has been detachably arranged over the entire length, when one or more of the 10 small rollers 41 made of plastic as a plurality of rotating rollers become non-rotatable, only the mini roller unit 40 is The belt conveyor can be repaired immediately by simply replacing it, and the belt conveyor has excellent maintainability.

 In the first embodiment, “when the input pedal is pressed and moves in a substantially vertical direction, the elastic force is accumulated by contracting with it, and the elastic force accumulated by releasing the pressing force of the input pedal is stored. The elastic energy storage means that releases the energy and moves the input pedal in the reverse direction ”and“ the force that presses the input pedal is stored by contracting in the parallel movement direction when the input pedal is pressed and moving in parallel. The example using the coil spring 11 has been described as “elastic energy storage means for releasing the elastic energy accumulated by the release and translating the input pedal in the reverse direction”. Blocks, rubber pipes, etc. can be used.

 When a rubber block is used, a cylindrical block or a prismatic rubber block is pressed by a pressing portion provided in the pedal body 10b of the input pedal 10 and the input pedal 10 is pressed and moved. What is necessary is just to attach so that it may crush in the longitudinal direction of a shape or a prism shape. Further, when a rubber pipe is used, a cylindrical pipe or a rectangular pipe is inserted into and supported by a shaft such as the first slide shaft 17 in the first embodiment, and the first The slide part 10c may be attached so as to be crushed in the longitudinal direction of a cylindrical shape or a rectangular tube shape.

Embodiment 2
Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 8A is a plan view showing the overall configuration of the belt conveyor according to Embodiment 2 of the present invention, omitting two portions of the intermediate portion of the belt conveyor, and FIG. 8B is a front view. FIG. 9 is a longitudinal sectional view showing the configuration of the drive portion of the belt conveyor according to the second embodiment of the present invention as seen from the front side.

 In addition, since the whole structure of the belt conveyor which concerns on Embodiment 2 of this invention is the same as that of the structure of the belt conveyor 1 of Embodiment 1 except for a part, it is the same code | symbol about the same part. A part of the description is omitted.

 As shown in FIGS. 8 and 9, the belt conveyor 51 according to the second embodiment is different from the belt conveyor 1 according to the first embodiment in that the coil spring as the elastic energy storage means contracts and elastic energy is reduced. It is not an accumulation but an elastic energy is accumulated by stretching, and a small plastic roller as a plurality of rotating rollers is used which is larger than the belt conveyor 1 of the first embodiment, and is arranged Also, only the points that are changed from the third column to the second column.

 That is, as shown in FIG. 9, in the belt conveyor 51 according to the second embodiment, a coil spring stopper 72 is fixed in the lower frame 52B of the drive side frame 52, and the coil spring stopper 72 is coiled. The upper end of the spring 61 is fixed, and a coil spring stopper 73 is fixed to the upper end of the cylindrical first slide portion 60 c provided on the pedal body 60 b of the input pedal 60, and the coil spring 61 is attached to the coil spring stopper 73. The lower end of is fixed.

 And the cylindrical 1st slide part 60c provided in the pedal main body 60b of the input pedal 60 is the same as the belt-type conveyor 1 which concerns on Embodiment 1, and the column-shaped 1st slide shaft 17 is installed. The second slide portion 60 d is slidably fitted to the second slide shaft 18. Thus, since the pedal body 60b has two slide mechanisms, the input pedal 60 can smoothly move in the vertical direction without rattling.

 Therefore, when force is applied to the pedal portion 60a of the input pedal 60 and the input pedal 60 is lowered in the vertical direction, the coil spring 61 is fixed to the upper end of the first slide portion 60c of the pedal body 60b. Is stretched by accumulating elastic energy.

 Here, the lower limit of the vertical movement of the input pedal 60 is determined by the lower end of the stop block 60e fixed to the stop bolt 22 by two bolts contacting the pedal body 60b. The upper limit of the movement is determined by the contact of the flange portion of the first slide portion 60c of the pedal body 60b with the adjustment plate 70. The adjustment plate 70 can be moved up and down along the adjustment bolt 71 with respect to the lower frame 52B. Therefore, the movement stroke of the input pedal 60 can be freely set by adjusting the position of the upper end of the stop bolt 22 and the vertical position of the adjustment plate 70.

 8 and 9 is attached to the drive shaft 6a by the one-way clutch 26 as in the first embodiment, the input pedal 60 is lowered in the vertical direction and the coil spring 61 is moved. When the drive shaft 6a rotates simultaneously with the extension, that is, when the drive shaft 6a rotates clockwise (clockwise direction) in FIG. 9, the rotational force of the drive shaft 6a is not transmitted to the drive roller 6. Therefore, when the input pedal 60 is depressed, the driving roller 6 does not rotate and the conveyor belt 4 does not travel. Therefore, when the input pedal 60 is depressed, it is possible to prevent the conveyor belt 4 from traveling in the direction opposite to the normal traveling direction. The belt conveyor 51 is easy to use.

 On the other hand, when the force that pushes the input pedal 60 is released and the coil spring 61 that has been stretched releases the stored elastic energy and contracts, and the input pedal 60 is pushed up, the rack gear 12 is vertically integrated with the input pedal 60. And the pinion gear 13 rotates in the reverse direction, whereby the first sprocket 14 rotates in the reverse direction, and the rotation is transmitted to the second sprocket 16 by the chain 15, and the second sprocket 16 also As a result of rotating in the reverse direction, the drive shaft 6a also rotates integrally in the reverse direction.

 When the drive shaft 6a rotates in the reverse direction as described above, the one-way clutch 26 is attached so as to transmit the rotational force of the drive shaft 6a to the drive roller 6. Therefore, the drive roller 6 is connected to the drive shaft 6a. 9 is rotated counterclockwise (counterclockwise direction) in FIG. 9 and further rotated several times by the inertial force due to the weight of the driving roller 6, so that the conveyor belt 4 travels a long distance. .

 Further, as shown in FIG. 8 (a), in the belt conveyor 51 according to the second embodiment, on the long steel plate 5 as a support member, about twice the mini roller unit 40 in the first embodiment. A plastic roller unit 80 having a size of 1 mm is disposed. Since the rotation roller 81 of the roller unit 80 has a width about twice that of the rotation roller 41 of the mini roller unit 40, it is arranged in two rows on the long steel plate 5 as shown in FIG. By simply doing this, the conveyor belt 4 can be sufficiently supported.

 The usage method of the belt conveyor 51 which concerns on this Embodiment 2 which has such a structure is demonstrated with reference to FIG.8 and FIG.9. In the initial state, as shown in FIG. 9, the coil spring 61 is in a naturally contracted state, and the input pedal 60 has a stroke at a position where the cylindrical first slide portion 60 c is in contact with the adjustment plate 70. At the top. Here, the vertical movement stroke of the input pedal 60 is set to 200 mm by the adjustment bolt 71.

 From this state, the operator places the conveyed product with both hands on the driving side frame 52 on the conveying belt 4 and steps on the pedal portion 60a of the input pedal 60 with his / her foot, whereby the pedal body 60b of the input pedal 60 The stop block 60e fixed to the pedal body 60b with two bolts is pushed down by 200 mm until the lower end of the stop block 60e contacts the stop bolt 22. As a result, at the same time as the coil spring 11 is extended by 200 mm, the rack gear 12 is lowered integrally with the input pedal 60 in the vertical direction to rotate the pinion gear 13 and the pinion gear 13 is rotated about 2.7.

 Therefore, the first sprocket 14 also rotates about 2.7, the rotation is transmitted to the second sprocket 16 by the chain 15, and the second sprocket 16 has the same number of teeth and the same PCD as the first sprocket 14. Therefore, as a result of about 2.7 rotations, the drive shaft 6a also integrally rotates about 2.7. However, as described above, the drive roller 6 does not rotate due to the action of the one-way clutch 26, and the conveyor belt 4 does not travel. Therefore, when the input pedal 60 is depressed, it is possible to prevent the conveyance belt 4 from traveling in the direction opposite to the normal traveling direction and the conveyance object placed on the conveyance belt 4 by the operator from falling.

 Subsequently, when the operator removes his / her foot from the pedal portion 60a of the input pedal 60, the coil spring 61 which has been extended contracts by releasing the accumulated elastic energy, the input pedal 60 is lifted by 200 mm, and the rack gear 12 is input. The pinion gear 13 is raised 200 mm in the vertical direction integrally with the pedal 60 and the pinion gear 13 is rotated about 2.7 in the reverse direction, whereby the first sprocket 14 is rotated about 2.7 in the reverse direction. As a result of being transmitted to the second sprocket 16 and the second sprocket 16 also rotating about 2.7 in the reverse direction, the drive shaft 6a also integrally rotates about 2.7 in the reverse direction.

 When the drive shaft 6a rotates in the reverse direction as described above, the one-way clutch 26 is attached so as to transmit the rotational force of the drive shaft 6a to the drive roller 6. About 2.7 rotations in the counterclockwise direction (counterclockwise direction), and about 10 rotations several times that due to the inertial force due to the weight of the driving roller 6. Here, since the outer diameter of the driving roller 6 is φ139 mm and the outer periphery is about 437 mm, the conveying belt 4 travels by about 437 mm × 10 = about 4370 mm = about 4.37 m, and the conveyed object reaches about 4.37 m ahead. Transport at once.

 Further, as described above, the plastic rotating rollers 81 as the plurality of rotating rollers are arranged over the entire length of the long steel plate 5 as the support member, so that a heavy conveyed object is placed on the conveying belt 4. Even when the transport belt 4 is bent, it is supported by being in contact with the rotatable plastic rotating roller 81 without directly contacting the long steel plate 5, so even when a heavy transported object is placed, The conveyor belt 4 is smoothly conveyed to about 4.37 m ahead.

 In this way, in the belt conveyor 51 according to the second embodiment, the conveyor belt 4 is supported at a necessary height, and no power is required, and the lighter, cheaper and more compact belt conveyor. 51, the conveyor belt 4 can be fed longer simply by lightly depressing and releasing the input pedal 60.

 Further, the belt conveyor 51 according to the second embodiment is considered to be used as a mobile installation type belt conveyor by taking advantage of the fact that it does not require electric power and is light as a whole. For example, in the event of a flood due to a river bank breach, it can be used for emergencies such as transporting to the site and transporting sandbags.

 Furthermore, as a function and effect peculiar to the belt conveyor 51 according to the second embodiment, as a plurality of rotating rollers, a large number of roller units 80 shown in FIG. When one or more of the 10 rotating rollers 81 made of plastic as a plurality of rotating rollers become non-rotatable, only the roller unit 80 is replaced. A belt conveyor that can be repaired immediately and has excellent maintainability.

 In the second embodiment, “when the input pedal is pressed and moves in a substantially vertical direction, it expands accordingly and accumulates elastic energy, and the elastic force accumulated by releasing the pressing force of the input pedal. The elastic energy storage means that releases the energy and moves the input pedal in the reverse direction ”and“ the force that pushes the input pedal by extending the parallel movement direction when the input pedal is pushed and moving in parallel to accumulate elastic energy. The example using the coil spring 61 has been described as “elastic energy storage means for releasing the elastic energy accumulated by the release and translating the input pedal in the reverse direction”. Can be used.

 In carrying out the present invention, the configuration, shape, quantity, material, size, connection relationship, and the like of other parts of the belt conveyor are not limited to the above embodiments.

 Since the belt conveyor 1 according to the first embodiment of the present invention and the belt conveyor 51 according to the second embodiment of the present invention do not use electricity, a work place around water, for example, a cooking room, an agricultural work place under hot weather, etc. The conveyor can be used to carry in or out of the water tank. Furthermore, in the event of a flood due to a river bank break, it can be transported to the site and used to transport sandbags for repairing the bank.

 Also, in the cooking room, the belt conveyor is inexpensive because it is not necessary to provide a waterproof structure such as an insulation transformer for the transfer between the cooking room and the serving room. Further, when not driven, no energy is used, and therefore, it is different from the conventional belt conveyor that is continuously operated, and thus there is an energy saving effect.

 And transportation between pharmacies and other preparation rooms and delivery locations, delivery between clean rooms and the outside, selection work in the fruit and vegetable selection area, and transportation after the selection, of course, from the human assembly work in the parts assembly plant It can be used for delivery to the main conveyor, assembly and transportation of parts and the like in group units, and transportation in boxed units.

Fig.1 (a) is a top view which abbreviate | omits two places of the intermediate part of a belt conveyor, and shows the whole structure of the belt conveyor which concerns on Embodiment 1 of this invention, (b) is a front view. FIG. 2 is a longitudinal sectional view showing the configuration of the drive portion of the belt conveyor according to the first embodiment of the present invention as seen from the front side. FIG. 3 is a longitudinal sectional view showing the configuration of the driving portion of the belt conveyor according to the first embodiment of the present invention as viewed from the right side. FIG. 4 (a) is an enlarged longitudinal sectional view showing the inside of the inner frame of the drive side frame of the belt conveyor according to the first embodiment of the present invention, and FIG. 4 (b) shows the belt conveyor according to the first embodiment of the present invention. It is a perspective view which shows the rotating roller unit used. FIG. 5 is an enlarged plan view showing the vicinity of the drive side frame of the belt conveyor according to Embodiment 1 of the present invention. FIG. 6 is an enlarged plan view showing the vicinity of the driven frame of the belt conveyor according to Embodiment 1 of the present invention. FIG. 7 is an enlarged perspective view showing the vicinity of the driven roller of the belt conveyor according to Embodiment 1 of the present invention. FIG. 8A is a plan view showing the overall configuration of the belt conveyor according to Embodiment 2 of the present invention, omitting two portions of the intermediate portion of the belt conveyor, and FIG. 8B is a front view. FIG. 9 is a longitudinal sectional view showing the configuration of the drive portion of the belt conveyor according to the second embodiment of the present invention as seen from the front side.

1, 51 Belt conveyor 2, 52 Drive side frame 3 Drive side frame 4 Conveying belt 5 Support member 6 Drive roller 6a Drive shaft 7 Drive roller 7a Drive shaft 10, 60 Input pedal 11, 61 Coil spring 12 Rack gear 13 Pinion gear 14 First Sprocket 15 Chain 16 Second sprocket 26 One-way clutch 30A, 30B, 31A, 31B, 32A, 32B, 33A, 33B Multiple support legs 41, 81 Multiple rotary rollers

Claims (3)

A pair of frames spaced apart from each other;
A drive roller that is rotatably attached to a drive shaft that is pivotally supported on the drive side frame of the pair of frames and that uses a heavy material on the outer periphery of the drive roller to increase inertia ;
A driven roller rotatably attached to a driven shaft pivotally supported by a driven side frame of the pair of frames;
An endless travel belt that is stretched between the drive roller and the driven roller;
Between the driving roller and the driven roller, the conveyance belt is in contact with the entire length or around the middle so as to limit the downward displacement of the conveyance belt and receive the back side of the conveyance belt. A plurality of rotating rollers that rotate in the transport direction of the transport belt are provided so that no frictional force is applied, and a support leg is attached to support the transport belt at a required height. Members,
An input pedal attached to the drive side frame so as to be movable in a substantially vertical direction;
When the input pedal is pressed and moves in a substantially vertical direction, the input pedal extends or contracts in the parallel movement direction to accumulate elastic energy, and the pressing force of the input pedal is released, thereby releasing the input pedal. Elastic energy storage means for releasing the stored elastic energy and moving the input pedal in the reverse direction;
Rotational motion conversion means for converting the movement of the input pedal into the rotational motion of the first sprocket;
A chain that transmits the rotational movement of the first sprocket to a second sprocket that transmits the rotational speed of the first sprocket to a drive shaft of a drive roller that increases the rotational speed of the first sprocket;
And a one-way clutch mounted so that the drive roller does not rotate when the elastic energy storage means stores energy and rotates when the elastic energy storage means releases the stored energy. Belt conveyor. A pair of frames that are spaced apart from each other;
A drive roller that is attached to a drive shaft that is pivotally supported by the drive side frame of the pair of frames and that uses a heavy material on the outer periphery of the drive roller in order to increase inertia ;
A driven roller attached to a driven shaft supported by a driven frame of the pair of frames so as to be integrally rotatable;
An endless travel belt that is stretched between the drive roller and the driven roller;
Between the driving roller and the driven roller, the conveyor belt contacts the entire length or around the middle so as to limit the downward displacement of the conveyor belt and support the back surface of the conveyor belt. A plurality of rotating rollers that rotate in the transport direction of the transport belt are provided so that no frictional force is applied, and a support leg is attached to support the transport belt at a required height. Members,
An input pedal attached to the drive side frame so as to be movable in parallel;
When the input pedal is pushed and moves in a substantially vertical direction, the input pedal extends or contracts in the parallel movement direction to accumulate elastic energy, and the force pushing the input pedal is released, thereby releasing the force. Elastic energy storage means for releasing the stored elastic energy and translating the input pedal in the reverse direction;
Rotational motion conversion means for converting a short distance translation of the input pedal into a rotational motion of the first sprocket at many rotational speeds;
A chain for transmitting the rotational movement of the first sprocket to a second sprocket attached to the drive shaft so as to be integrally rotatable,
The drive roller does not rotate when the elastic energy storage means stores energy and the drive shaft rotates, and the drive roller releases the stored energy and rotates when the drive shaft rotates. The belt conveyor is attached to the drive shaft via a one-way clutch. The rotational motion converting means comprises a rack gear translates integrally with the input pedal, the rack gear meshing claim 1 or claims characterized by comprising the small-diameter pinion gear that rotates integrally with the first sprocket Item 3. The belt conveyor according to Item 2 .

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