JP3887379B2 - Mainspring belt conveyor - Google Patents

Description

  The present invention relates to an energy-saving type mainspring belt conveyor in which a mainspring can be wound manually and a conveyor belt can be run only when necessary.

  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, To drive the conveyor belt.
Japanese Patent No. 3058637

  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, there is a problem that the control system becomes extremely complicated and difficult to realize.

  Therefore, the present invention can wind the mainspring spring by hand only when necessary to run the conveyor belt, can save energy without using any power, and can easily perform fine control. An object of the present invention is to provide a spring-type belt conveyor that can be used.

A mainspring type belt conveyor according to a first aspect of the present invention comprises a pair of frames that are spaced apart from each other, and a drive roller that is rotatably attached to a drive shaft that is horizontally supported by one of the pair of frames. A driven roller that is rotatably attached to a driven shaft that is horizontally supported by the other of the pair of frames, and an endless traveling belt that is stretched over the driving roller and the driven roller. A support member for supporting the conveyor belt fixed at both ends to the pair of frames between the drive roller and the driven roller, a mainspring spring attached to the drive shaft, and the pair of frames An input shaft that is horizontally supported apart from the drive shaft, and the rotation of the input shaft provided between the input shaft and the drive shaft are transmitted to the drive shaft while increasing the number of rotations. Times The number increases transmission mechanism, an input lever having one end fixed to said input shaft, said drive roller does not rotate when rotating in a direction in which the drive shaft is wound said spiral spring, the drive shaft is the spiral spring And a one-way clutch attached to the drive shaft so as to rotate when rotating in a loosening direction .
Here, the mainspring spring can be disposed inside or outside the pair of frames, and in the case of the outside, repair is easy, but since a protruding portion is formed, it is selected and determined according to installation conditions. Further, the mainspring spring may be directly attached to the drive shaft, or may be disposed on another gear shaft that directly applies a rotational force to the transport belt. However, there is little loss when connected directly.

In addition, the drive roller does not rotate when the drive shaft rotates in the direction in which the mainspring spring is wound up, and rotates when the drive shaft rotates in the direction in which the mainspring spring is relaxed via a one-way clutch. It is attached to the drive shaft.

A mainspring type belt conveyor according to a second aspect of the present invention is the structure of the first aspect, wherein the rotational speed increasing transmission mechanism is a combination of a plurality of gears including a gear fixed to the input shaft and the drive shaft, and the rotational shaft. The gear fixed to the input shaft is disengaged from the gear engaged with the gear spring at a position where the mainspring spring is sufficiently wound by rotating the input lever. A portion without teeth is provided.

A mainspring type belt conveyor according to a third aspect of the present invention is the gear according to the first or second aspect , wherein the gear is fixed to the input shaft and the drive shaft among a plurality of gears constituting the rotation speed increasing transmission mechanism. One or more other gears rotate together when the rotation shaft of the gear rotates in the direction in which the mainspring spring is wound up, and transmit rotational force when the drive shaft rotates in the direction in which the mainspring spring is relaxed. In order to avoid this, it is attached to the rotating shaft via a one-way clutch.

According to a fourth aspect of the present invention, there is provided a mainspring type belt conveyor according to any one of the first to third aspects, wherein a weight is provided inside the drive roller over the entire circumference in order to increase the inertia of the drive roller. Is installed.

A mainspring type belt conveyor according to a fifth aspect of the present invention is the structure of any one of the first to fourth aspects, wherein a plurality of support belts are supported on both sides of the support member at a required height. Support legs are attached.

A mainspring type belt conveyor according to a sixth aspect of the present invention is the main body type belt conveyor according to any one of the first to fifth aspects, wherein a rotary handle is attached to one end of the input shaft instead of the input lever.

According to a seventh aspect of the present invention, there is provided a mainspring belt conveyor according to the sixth aspect , wherein a clutch mechanism is provided between the input shaft and the rotary handle.

A mainspring type belt conveyor according to an eighth aspect of the present invention is the structure of any one of the first to fifth aspects, wherein the rotational force is transmitted to the input shaft instead of the input lever or to the tip of the input lever. A foot pedal is provided.

  A mainspring type belt conveyor according to a ninth aspect of the present invention is the structure of any one of the first to sixth aspects, wherein the rotational force is transmitted to the input shaft instead of the input lever or to the tip of the input lever. A foot pedal is provided.

The drive roller is attached to the drive shaft via a one-way clutch, and does not rotate when the drive shaft rotates in the direction in which the mainspring spring is wound up, and rotates when the drive shaft rotates in the direction in which the mainspring spring is relaxed. It is like that. Accordingly, when the mainspring panel is wound up by rotating the input lever by a predetermined angle in the predetermined direction, the driving roller does not rotate, so that the input belt can be operated with a light force without requiring extra force without running the conveyor belt in the reverse direction. Can be turned to wind up the mainspring.
When the drive shaft rotates in the direction in which the main spring is relaxed when the hand is released from the input lever, the one-way clutch is engaged and the drive roller rotates integrally with the drive shaft, so that the conveyor belt also travels in a predetermined direction. By rotating the input lever by an arbitrary angle within the range of the winding limit of the mainspring spring and returning it little by little, it is easy to feed the conveyor belt by a minute distance (inching feed).
In this way, you can manually wind the mainspring spring only when necessary, run the mainspring spring in a reverse direction without running the conveyor belt, and run the conveyor belt with a light force. Thus, the mainspring belt conveyor can greatly save energy and can easily perform fine control.

A mainspring type belt conveyor according to a second aspect of the present invention is a gear fixed to an input shaft, the rotational speed increasing transmission mechanism comprising a combination of a plurality of gears including a gear fixed to the input shaft and the drive shaft and the rotation shaft. Is provided with a toothless portion so that the engagement is disengaged from the gear engaged with the gear at a position where the input lever is rotated and the mainspring spring is sufficiently wound up. Therefore, when the mainspring spring is sufficiently wound up, the gear engaged with the gear fixed to the input shaft can be idled, so that the mainspring spring is relaxed and the driving roller rotates to run the conveying belt. .
As a result, the rotational force is not transmitted to the gear and the input shaft that are fixed to the input shaft among the gears and the rotational shaft that constitute the rotational speed increase transmission mechanism, so the input lever does not return to the original position and is stored in the mainspring spring. The generated elastic force is not used for rotating the input lever to the original position, and the elastic force is effectively used without being wasted on the extra force. In addition, the danger of hitting the operator when the input lever is rotated to the original position is reliably avoided. Further, by rotating the input lever beyond a predetermined angle, it is possible to reliably avoid a situation in which the mainspring spring is excessively wound and damaged. By rotating the input lever by an arbitrary angle and returning it little by little within a range where the gear does not idle, it is easy to feed the transport belt by a minute distance (inching feed).
In this way, it is possible to wind the mainspring spring manually only when necessary, and to run the conveyor belt effectively using the elastic force stored in the mainspring spring without fear of damaging the mainspring spring too much. Thus, a mainspring belt conveyor can be provided which can greatly save energy without using any electric power and can easily perform fine control.

In the mainspring type belt conveyor according to the invention of claim 3 , one or more gears other than the gear fixed to the input shaft and the drive shaft among the plurality of gears constituting the rotation speed increasing transmission mechanism are rotated via the one-way clutch. It is attached to a shaft, and rotates integrally when the rotating shaft rotates in a direction in which the mainspring spring is wound up, and does not transmit a rotational force when the driving shaft rotates in a direction in which the mainspring spring is relaxed.
Therefore, when the mainspring is wound up by rotating the input lever, the rotational force is transmitted while increasing the number of rotations. Will not transmit torque to the input shaft and input lever, and the elastic force stored in the mainspring spring to rotate the input shaft and input lever together with all of the multiple gears constituting the rotation speed increase transmission mechanism. Since this is used to rotate the drive roller only by rotating the drive shaft and the gear in the vicinity thereof, the conveyor belt can be run efficiently.
Further, by repeating the operation of rotating the input lever a little and returning it, it is possible to finely adjust the position of the workpiece on the conveyor belt by repeating the jogging feed.
In this way, the mainspring spring can be manually wound only when necessary, and the conveyor belt can be driven by effectively using the elastic force stored in the mainspring spring, thereby greatly saving energy without using any electric power. In addition, the mainspring belt conveyor can be easily controlled with fine control.

In the mainspring type belt conveyor according to the invention of claim 4 , a weight is attached to the entire circumference of the drive roller in order to increase the inertia of the drive roller. As a result, when the mainspring spring is relaxed and the driving roller rotates, the driving roller rotates several times the number of rotations due to the relaxation of the mainspring spring due to the inertial force, and the conveyor belt can run for a longer distance.
In this way, the mainspring spring can be manually wound only when necessary, and the conveyor belt can be driven by effectively using the elastic force stored in the mainspring spring, thereby greatly saving energy without using any electric power. It will be a mainspring type belt conveyor.

The mainspring belt conveyor according to the invention of claim 5 is provided with a plurality of support legs for supporting the conveying belt at a required height on both sides of the support member. At a certain height, the conveyor belt can be supported at the required height by making a pair of frames high, but there are also limitations, especially on the frame side where only the driven roller and the driven shaft are attached, This wastes frame material. 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 this way, the conveyor belt is supported at a required height, and the mainspring spring is manually wound only when necessary, and the conveyor belt can be run using the elastic force stored in the mainspring spring effectively. Therefore, the mainspring belt conveyor can save energy significantly without using any electric power.

The mainspring type belt conveyor according to the invention of claim 6 has a rotary handle attached to one end of the input shaft instead of the input lever. The rotation speed increasing transmission mechanism provided between the input shaft and the drive shaft allows the drive shaft to rotate several times just by rotating the input shaft about half a turn, but the mainspring spring can be wound at once. The force for rotating the input shaft is many times greater than the force required to directly rotate the drive shaft.
Therefore, by fixing the input lever having a certain length to the input shaft, the input shaft can be easily rotated by the lever principle. However, if the rotary handle is used instead, the diameter of the handle is small. In order to rotate the input shaft, a larger force is required. Instead, in a type that saves space, and in which the rotational force returns to the input shaft when the conveyor belt travels like the mainspring type belt conveyor according to the inventions of claims 1 and 2, It is safer for the operator to rotate the small diameter rotary handle than to move the long input lever back to its original position.
In this way, you can manually wind the mainspring spring only when necessary, and effectively use the elastic force stored in the mainspring spring to run the conveyor belt more safely, saving significant energy without using any power. It becomes a mainspring type belt conveyor that can be made easier.

The mainspring type belt conveyor according to the invention of claim 7 is provided with a clutch mechanism between the input shaft and the rotary handle. As a result, the rotary handle is rotated by a predetermined angle in a predetermined direction to wind up the mainspring spring via the rotation speed increase transmission mechanism, and if the connection between the input shaft and the rotary handle is released by the clutch mechanism, the input shaft and The mainspring spring is relaxed via the rotation speed increasing transmission mechanism, the drive roller rotates, and the conveyor belt runs. At this time, since the rotary handle does not rotate, the type in which the rotational force returns to the input shaft when the transport belt travels, such as the mainspring type belt conveyor according to the first and second aspects of the invention, can be obtained. It is safe.
In this way, you can manually wind the mainspring spring only when necessary, and effectively use the elastic force stored in the mainspring spring to run the conveyor belt more safely, saving significant energy without using any power. It becomes a mainspring type belt conveyor that can be made easier.

The mainspring type belt conveyor according to the invention of claim 8 is provided with a foot pedal for transmitting rotational force to the input shaft instead of the input lever or at the tip of the input lever. As a result, the foot pedal can be operated with the foot to turn the input shaft in a predetermined direction by a predetermined angle, and the mainspring can be wound to run the transport belt. In addition, it is easy to move the conveyor belt by moving the foot stepping on the foot pedal little by little. Furthermore, since both hands of the operator are free, other operations can be performed simultaneously while driving the mainspring belt conveyor.
In this way, it is possible to wind the mainspring spring only when necessary, and to use the elastic force stored in the mainspring spring more effectively to run the conveyor belt more safely. It becomes a mainspring type belt conveyor that can be made easier.

  In this way, the mainspring can be manually wound only when necessary, and the conveyor belt can be run by effectively using the elastic force stored in the mainspring without fear of damaging the mainspring too much. Thus, a mainspring belt conveyor can be provided which can greatly save energy without using any electric power and can easily perform fine control.

  In the mainspring type belt conveyor according to the invention of claim 4, one or more gears other than the gear fixed to the input shaft and the drive shaft among the plurality of gears constituting the rotation speed increasing transmission mechanism are rotated via the one-way clutch. It is attached to a shaft, and rotates integrally when the rotating shaft rotates in a direction in which the mainspring spring is wound up, and does not transmit a rotational force when the driving shaft rotates in a direction in which the mainspring spring is relaxed.

  Therefore, when the mainspring is wound up by rotating the input lever, the rotational force is transmitted while increasing the number of rotations. When the mainspring is relaxed and the drive roller rotates to run the conveyor belt, either the rotating shaft or the gear is driven. Will not transmit torque to the input shaft and input lever, and the elastic force stored in the mainspring spring to rotate the input shaft and input lever together with all of the multiple gears constituting the rotation speed increase transmission mechanism. Since this is used to rotate the drive roller only by rotating the drive shaft and the gear in the vicinity thereof, the conveyor belt can be run efficiently.

  Further, by repeating the operation of rotating the input lever a little and returning it, it is possible to finely adjust the position of the workpiece on the conveyor belt by repeating the jogging feed.

  In this way, the mainspring spring can be manually wound only when necessary, and the conveyor belt can be driven by effectively using the elastic force stored in the mainspring spring, thereby greatly saving energy without using any electric power. In addition, the mainspring belt conveyor can be easily controlled with fine control.

  In the mainspring type belt conveyor according to the invention of claim 5, a weight is attached to the entire circumference of the drive roller in order to increase the inertia of the drive roller. As a result, when the mainspring spring is relaxed and the driving roller rotates, the driving roller rotates several times the number of rotations due to the relaxation of the mainspring spring due to the inertial force, and the conveyor belt can run for a longer distance.

  In this way, the mainspring spring can be manually wound only when necessary, and the conveyor belt can be driven by effectively using the elastic force stored in the mainspring spring. It will be a mainspring type belt conveyor.

  The mainspring belt conveyor according to the invention of claim 6 is provided with a plurality of support legs for supporting the conveyor belt at a required height on both sides of the support member. At a certain height, the conveyor belt can be supported at the required height by making a pair of frames high, but there are also limitations, especially on the frame side where only the driven roller and the driven shaft are attached, This wastes frame material. 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 this way, the conveyor belt is supported at a required height, and the mainspring spring is manually wound only when necessary, and the conveyor belt can be run using the elastic force stored in the mainspring spring effectively. Therefore, the mainspring belt conveyor can save energy significantly without using any electric power.

  The mainspring type belt conveyor according to the invention of claim 7 has a rotary handle attached to one end of the input shaft instead of the input lever. The rotation speed increasing transmission mechanism provided between the input shaft and the drive shaft allows the drive shaft to rotate several times just by rotating the input shaft about half a turn, but the mainspring spring can be wound at once. The force for rotating the input shaft is many times greater than the force required to directly rotate the drive shaft.

  Therefore, by fixing the input lever having a certain length to the input shaft, the input shaft can be easily rotated by the lever principle. However, if the rotary handle is used instead, the diameter of the handle is small. In order to rotate the input shaft, a larger force is required. Instead, in a type that saves space, and in which the rotational force returns to the input shaft when the conveyor belt travels like the mainspring type belt conveyor according to the inventions of claims 1 and 2, It is safer for the operator to rotate the small diameter rotary handle than to move the long input lever back to its original position.

  In this way, you can manually wind the mainspring spring only when necessary, and effectively use the elastic force stored in the mainspring spring to run the conveyor belt more safely, saving significant energy without using any power. It becomes a mainspring type belt conveyor that can be made easier.

  The mainspring type belt conveyor according to the invention of claim 8 is provided with a clutch mechanism between the input shaft and the rotary handle. As a result, the rotary handle is rotated by a predetermined angle in a predetermined direction to wind up the mainspring spring via the rotation speed increase transmission mechanism, and if the connection between the input shaft and the rotary handle is released by the clutch mechanism, the input shaft and The mainspring spring is relaxed via the rotation speed increasing transmission mechanism, the drive roller rotates, and the conveyor belt runs. At this time, since the rotary handle does not rotate, the type in which the rotational force returns to the input shaft when the transport belt travels, such as the mainspring type belt conveyor according to the first and second aspects of the invention, can be obtained. It is safe.

  In this way, you can manually wind the mainspring spring only when necessary, and effectively use the elastic force stored in the mainspring spring to run the conveyor belt more safely, saving significant energy without using any power. It becomes a mainspring type belt conveyor that can be made easier.

  The mainspring type belt conveyor according to the invention of claim 9 is provided with a foot pedal for transmitting rotational force to the input shaft instead of the input lever or at the tip of the input lever. As a result, the foot pedal can be operated with the foot to turn the input shaft in a predetermined direction by a predetermined angle, and the mainspring can be wound to run the transport belt. In addition, it is easy to move the conveyor belt by moving the foot stepping on the foot pedal little by little. Furthermore, since both hands of the operator are free, other operations can be performed simultaneously while driving the mainspring belt conveyor.

  In this way, it is possible to wind the mainspring spring only when necessary, and to use the elastic force stored in the mainspring spring more effectively to run the conveyor belt more safely. It becomes a mainspring type belt conveyor that can be made easier.

  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 is a side view showing the overall configuration of the mainspring type belt conveyor according to the first embodiment of the present invention, with the intermediate portion omitted. FIG. 2 is a plan view showing the entire configuration of the mainspring belt conveyor according to the first embodiment of the present invention with the intermediate portion omitted. FIG. 3 is a longitudinal sectional view showing the configuration of the drive part of the mainspring type belt conveyor according to the first embodiment of the present invention. FIG. 4 is an enlarged left side view of the driving portion of the mainspring type belt conveyor according to the first embodiment of the present invention.

  As shown in FIG. 1, the mainspring type belt conveyor 1 according to the first embodiment is driven as one of a pair of frames made of two plated steel plates assembled with an aluminum rod (not shown) interposed therebetween. Side frame 2, driven side frame 3 as the other of a pair of frames made of two plated steel plates that are spaced apart from each other, and an aluminum plate as a support member fixed at both ends to the pair of frames 2 and 3 10 and a pair of support legs 11 attached to the side of the aluminum plate 10 near the pair of frames 2 and 3 (the support legs on the opposite side overlap with the support legs 11 on the near side are not shown). It is configured as.

  A drive shaft 5a is horizontally supported on the drive-side frame 2, and the drive roller 5 is attached so as to be integrally rotatable. Similarly, a driven shaft 6a is horizontally supported on the driven-side frame 3, and the driven roller 6 Is attached to the drive roller 5 and the driven roller 6 so that an endless traveling belt 4 is stretched between them. Between the drive shaft 5a and the input shaft 7 that is also horizontally supported by the drive side frame 2, a rotation speed increasing transmission mechanism, which will be described later, is provided in the drive side frame 2, By rotating the input lever 8 fixed via the moving ring 7a, the spring spring 16 (not shown) attached to the drive shaft 5a on the side opposite to the drive side frame 2 is wound up.

  The input lever 8 is in contact with the origin bar 9 in FIG. 1, and the mainspring spring 16 is in the most relaxed state when the input lever 8 is in this position. When the operator grasps the grip portion 8a at the tip of the input lever 8 from this origin position and rotates it 150 degrees clockwise (clockwise) as indicated by the imaginary line, the operation of the rotation speed increase transmission mechanism is achieved. As a result, the drive shaft 5a rotates about 3.5 times, and the mainspring spring 16 is also wound up by about 3.5 rotations, and the elastic energy is accumulated to the maximum.

  Since the width of the aluminum plate 10 as the support member is wider than the width of the transport belt 4, the side surfaces of the aluminum plate 10 protrude from the transport belt 4 toward the front side of the paper surface, and the support legs 11 are formed on the side surfaces of the aluminum plate 10. Can be installed directly. However, since the width is narrow and the stability is poor if the aluminum plate 10 is lowered straight, the fixing plate 13 is first fixed to the groove 10a at the center of the side surface of the aluminum plate 10 with fixing bolts 13a. The lower leg portion 12 is inclined in a plane perpendicular to the paper surface so as to expand outward, and the lower end 12a of the leg portion 12 is bent horizontally to fix the ground shaft 14 and the ground rubber 15 with nuts.

  As a result, as shown in the plan view of FIG. 2, the support leg 11 extends from the side surface of the aluminum plate 10 to the left and right to be grounded, and supports the conveyor belt 4 at a predetermined height with sufficient stability. Can do. The aluminum plate 10 as a support member is fastened and fixed to the driving side frame 2 by four fixing bolts 10b in total, four on the left and right sides, and four fixing bolts 10c in total on the driven side frame 2 on the left and right sides. It is fixed by tightening. As described above, the mainspring spring 16 attached to the driving shaft 5a is accommodated in the mainspring box 16a on the side opposite to the driving side frame 2.

  Next, the configuration of the rotation speed increase transmission mechanism will be described with reference to FIG. In FIG. 3, the mainspring box 16a is not shown.

  As shown in FIG. 3, between the two plated steel plates of the drive side frame 2, the drive roller 5 is mounted on a drive shaft 5 a that is horizontally supported by the drive side frame 2 by two ball bearing bearings 26. The one-way clutch 18 and the ball bearing 26 are attached so as to be integrally rotatable. A weight 17 is attached to the inside of the driving roller 5 over the entire circumference in order to increase the inertia, and a conveyor belt 4 is hung on the outer circumference of the driving roller 5. A mainspring spring 16 is attached to a portion of the driving shaft 5a protruding from the driving-side frame 2, and a central end of the mainspring spring 16 is fixed to the driving shaft 5a by a mainspring spring fixing bolt 16c. The outer peripheral end is fixed to the drive side frame 2 by a mainspring spring fixing bolt 16b.

  A small-diameter gear 20 is integrally fixed to the opposite side of the drive shaft 5a, and a large-diameter gear 21 meshing with the gear 20 is horizontally supported by the drive-side frame 2 at both ends by ball bearing bearings 26. The one-way clutch 19 is attached to the rotating shaft 21a. A small-diameter gear 22 is integrally fixed from the center of the rotary shaft 21a, and a large-diameter gear 23 meshing with the gear 22 is horizontally supported by the drive-side frame 2 at both ends by ball bearing bearings 26. The input shaft 7 is integrally fixed. The gear 23 is provided with a toothless portion 23a covering about 2/5 of the outer periphery. Note that a retaining ring 24 is fitted into necessary portions of the drive shaft 5 a, the rotary shaft 21 a, and the input shaft 7 that are supported by the ball bearing bearing 26.

  In the mainspring belt conveyor 1 according to the first exemplary embodiment, the number of teeth of the gear 20 is 30, the number of teeth of the gear 21 is 75, the number of teeth of the gear 22 is 30, and the number of teeth of the gear 23 is (the number of teeth on the entire circumference). Therefore, the rotational speed of the drive shaft 5a when the input lever 8 is rotated 150 degrees is (150 degrees / 360 degrees) × (100/30) × (75/30) ≈ 3.5 is about 3.5 rotations. Accordingly, the mainspring spring 16 is also wound up by about 3.5 turns. However, when the length of the mainspring spring 16 is 2 m, the mainspring spring 16 accumulates the maximum elastic energy.

  Since the number of teeth of the gear 23 according to the first embodiment determines the energy accumulated in the mainspring spring 16 by the meshing thereof, naturally, the moving distance of the conveying belt 4, that is, the conveying distance is determined. Further, since the meshing between the gear 22 and the gear 23 is suddenly disengaged, the energy accumulated in the mainspring spring 16 can be output at a stretch, which is highly efficient. In the first embodiment, when the input lever 8 is rotated 150 degrees from the original position shown in FIG. 1, the toothless portion 23 a of the gear 23 reaches the meshing position of the gear 22 and the gear 23. Since the gear 22 is idled in the reverse direction and the mainspring spring 16 is relaxed, there is no possibility that the mainspring spring 16 is wound too much and damaged.

  Further, the one-way clutch 18 does not transmit the rotation to the driving roller 5 when the driving shaft 5a rotates in the direction of winding the mainspring spring 16, and the driving roller 5 also rotates when the driving shaft 5a rotates in the direction in which the mainspring spring 16 relaxes. It is attached so as to rotate together. On the other hand, the one-way clutch 19 transmits the rotation to the gear 21 when the rotary shaft 21a rotates in the direction to wind up the mainspring spring 16, and the rotation to the rotary shaft 21a when the gear 21 rotates in the direction in which the mainspring spring 16 relaxes. It is installed so that it does not transmit and idles.

  A mechanism of traveling of the conveyor belt 4 in the mainspring type belt conveyor 1 having such a configuration will be described with reference to FIGS. 3 and 4.

  When the operator grasps the grip portion 8a at the tip of the input lever 8 shown in FIG. 3 and rotates the input lever 8 in the clockwise (clockwise) direction as viewed from the side, that is, in the direction of tilting to the opposite side on the paper surface. The input shaft 7 also rotates through the rotation ring 7a, and the gear 23 fixed to the input shaft 7 also rotates integrally. Then, the gear 22 meshed with the gear 23 also rotates together with the fixed rotating shaft 21a. In this case, the rotating shaft 21a rotates in the direction of winding the mainspring spring 16, so that the one-way clutch 19 rotates. Is transmitted to the gear 21 and the gear 21 is also rotated integrally. Further, the gear 20 meshed with the gear 21 also rotates integrally with the fixed drive shaft 5a and starts to wind the mainspring spring 16 attached to the other end, but the one-way clutch 18 rotates the drive roller 5. Therefore, the mainspring spring 16 can be wound with a light force without the conveyance belt 4 traveling in the reverse direction.

  In this way, as shown in FIG. 4, as gear 23 rotates in the direction of arrow A, gears 22 and 21 rotate in the direction of arrow B, and gear 20 and drive shaft 5a rotate in the direction of arrow C. As a result, the mainspring spring 16 is gradually and strongly wound and elastic energy is accumulated. When the rotation angle in the direction of the arrow A reaches about 150 degrees, the end of the toothless portion 23a of the gear 23 reaches the meshing portion with the gear 22 to disengage, and the rotating shaft 21a and the drive shaft 5a , The main spring 16 is rotated in the direction opposite to the arrows by the energy of the mainspring 16 to relax, and the driving roller 5 rotates counterclockwise (counterclockwise) to cause the conveyor belt 4 to travel in the direction of arrow D.

  At this time, the one-way clutch 18 shown in FIG. 3 transmits the rotation of the drive shaft 5a to the drive roller 5 and rotates, while the one-way clutch 19 does not transmit the rotation of the gear 21 to the rotation shaft 21a and the gear 21 rotates idly. . Therefore, the rotational force of the drive shaft 5a is merely wasted to rotate the gears 20 and 21 other than rotating the drive roller 5, and the elastic energy accumulated in the mainspring spring 16 efficiently travels on the conveyor belt 4. Used to make Further, since the weight 17 is attached to the inside of the driving roller 5, the driving roller 5 rotates several times the number of rotations due to the relaxation of the mainspring spring 16 due to the inertial force, and the conveying belt 4 can travel a longer distance. it can.

  Thus, in the mainspring belt conveyor 1 according to the first embodiment, the mainspring spring 16 is manually wound only when necessary, and the mainspring is not caused to travel in the reverse direction, and the mainspring is moved with a light force. The conveyor belt 4 can be run by winding the spring 16, energy can be greatly reduced without using any electric power, and there is no possibility of damaging the mainspring spring 16 due to excessive winding.

  Further, the input belt 8 shown in FIG. 4 is rotated in the direction of the arrow A by a small angle and returned by an arbitrary angle in the reverse direction, so that the conveyor belt 4 can be moved (smoothly fed) little by little. However, due to the action of the one-way clutch 19 provided on the gear 21, even if the input lever 8 is returned and stopped in the reverse direction, the gear 21 will idle, so the conveyor belt 4 does not stop at that position, and the mainspring spring 16 is completely The vehicle runs until it relaxes and the inertia force of the drive roller 5 disappears.

  Therefore, in order to make the transport belt 4 travel a minute distance (inching feed) more freely, it is better to directly fix the gear 21 to the rotating shaft 21a without using the one-way clutch 19 as in the first embodiment. good. As a result, if the input lever 8 is rotated in the direction of arrow A by an arbitrary angle within a range of about 150 degrees and returned to the opposite direction and stopped, the conveying belt 4 also stops at that position. In this way, if the input lever 8 is returned and stopped while looking at the position of the work on the transport belt 4, the work can be transported to a desired position.

Embodiment 2
Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 5 is a longitudinal sectional view showing the configuration of the drive part of the mainspring type belt conveyor according to the second embodiment of the present invention.

  As shown in FIG. 5, the mainspring belt conveyor 31 according to the second embodiment has the same main part configuration as the mainspring belt conveyor 1 according to the first embodiment. The reference numerals are attached and the description is omitted. The difference is that a gear 28 having teeth on the entire circumference is fixed to the input shaft 7 instead of the gear 23 having a part 23a having no teeth fixed to the input shaft 7, and the end of the input shaft 7 is different. In addition, a rotary handle 35 is provided in place of the input lever 8 via the clutch mechanism 34.

  The clutch mechanism 34 includes a cylindrical gear 32 that is fixed to the end of the input shaft 7, and a cylindrical gear 33 that is fixed to a rotary handle 35 that is pivotally supported with respect to the input shaft 7 and that is capable of moving forward and backward. It is composed of In the state of FIG. 5, the rotary handle 35 is retracted, and the clutch mechanism 34 is released. When the rotary handle 35 is advanced in the direction of the arrow from this state, the cylindrical gear 32 and the cylindrical gear 33 are engaged with each other, the clutch mechanism 34 is engaged, and the rotary handle 35 is held to the right by holding the handle 36. By rotating in the clockwise (clockwise) direction, the input shaft 7 rotates and the rotational force is transmitted to the drive shaft 5a as in the first embodiment, and the mainspring spring 16 is wound up.

  Here, in the second embodiment, the gear 28 fixed to the input shaft 7 has teeth on the entire circumference, and the input shaft 7 rotates to about 150 degrees, which is the winding limit of the mainspring spring 16. Sometimes, unlike the first embodiment, the gear 22 is not automatically idled and the mainspring spring 16 is not loosened. Therefore, the mainspring spring is rotated by rotating the input shaft 7 beyond the winding limit of the mainspring spring 16. In order to prevent the 16 from being damaged, it is necessary to take a measure such as clearly indicating a rotation range outside the driving side frame 2 or providing a stopper for the handle 36.

  When the clutch mechanism 34 is engaged and the handle 36 is held to rotate the rotary handle 35 to an arbitrary angle within the rotation range, the rotary handle 35 and the cylindrical gear are held with both hands. Retract 33. As a result, the clutch mechanism 34 is released, and the input shaft 7, the gear 28, the gear 22, the rotating shaft 21 a, the gear 21, the gear 20, and the driving shaft 5 a are rotated in the reverse direction by the elastic energy stored in the mainspring spring 16. Thus, the driving roller 5 rotates integrally with the driving shaft 5a by the action of the one-way clutch 18, the upper surface of the conveying belt 4 is sent out in a predetermined direction (the front side of the sheet), and the lower surface is wound around the driving roller 5 to be conveyed. The belt 4 runs.

  At this time, the one-way clutch 19 does not transmit the rotation of the gear 21 to the rotating shaft 21a, and the gear 21 rotates idly. Therefore, the rotational force of the drive shaft 5a is merely wasted to rotate the gears 20 and 21 other than rotating the drive roller 5, and the elastic energy accumulated in the mainspring spring 16 efficiently travels on the conveyor belt 4. Used to make Furthermore, since the weight 17 is attached inside the driving roller 5, the driving roller 5 rotates several times the number of rotations due to the loosening of the mainspring spring 16 due to the inertial force, and the conveyor belt 4 can travel a longer distance. .

  As described above, in the mainspring type belt conveyor 31 according to the second embodiment, the mainspring spring 16 is manually wound only when necessary, and the mainspring is not caused to travel in the reverse direction and with a light force. The conveyor belt 4 can be run by winding the spring 16 and energy can be greatly saved without using any electric power. In addition, since the rotary handle 35 is used instead of the long input lever 8, it can be used in a narrow space. Can be installed.

Embodiment 3
Next, Embodiment 3 of the present invention will be described with reference to FIG. FIG. 6 is an enlarged left side view of the driving portion of the mainspring type belt conveyor according to the third embodiment of the present invention. Since most of the configuration of the mainspring type belt conveyor according to the third embodiment is the same as that of the first and second embodiments, the same members are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 6, in the mainspring belt conveyor 41 according to the third embodiment, unlike the first and second embodiments, the input shaft 7 is rotated by the force of the feet instead of the hands. That is, instead of fixing the input lever 8 to the input shaft 7, the pinion gear 42 is fixed so as to rotate integrally, and the rack gear 43 that meshes with the pinion gear 42 is attached so as to be movable in the vertical direction. A long transmission shaft 44 that reaches the vicinity of the floor surface is vertically fixed to the lower end of the rack gear 43, and the lower end of the transmission shaft 44 is rotatably attached to a foot plate 45a of a foot pedal 45 installed on the floor surface. .

  A return spring 46 is attached between the foot plate 45a and the bottom plate 45b of the foot pedal 45. When no force is applied to the foot plate 45a, the rack gear 43, the pinion gear 42, and the gear 23 are in the original position shown in FIG. Hold back to. When an operator steps on the foot plate 45a with his / her foot from this state, the rack gear 43 is lowered vertically together with the transmission shaft 44, and the pinion gear 42 is rotated in the direction of arrow A. As a result, the input shaft 7 and the gear 23 are also rotated together to rotate the rotary shaft 21a in the direction of arrow B and the drive shaft 5a in the direction of arrow C, so that the mainspring spring 16 attached to the drive shaft 5a is moved. Roll up.

  Here, in the third embodiment, since the input shaft 7 is set to rotate about 150 degrees when the rack gear 43 is lowered by about 10 cm, when the operator steps on the tread plate 45a by about 10 cm, the gear 23 and Since one end of the toothless portion 23a of the gear 23 reaches the meshing position of the gear 22 and the gear 22 is idle, the mainspring spring 16 is loosened, and the drive shaft 5a and the rotating shaft 21a are in the opposite direction to the arrows. The drive roller 5 rotates together with the drive shaft 5a, and the transport belt 4 is fed in the direction of arrow D to run. When the operator steps on the tread plate 45a within a range of about 10 cm and loosens the stepping force, the tread plate 45a is slightly returned by the repulsive force of the return spring 46 to slightly raise the rack gear 43, and the input shaft 7, rotary shaft 21a, drive shaft It is also possible to incline feed the conveyor belt 4 by rotating 5a in the direction opposite to the arrow.

  Thus, in the mainspring belt conveyor 41 according to the third embodiment, the mainspring spring 16 is wound by human power only when necessary, and the elastic force stored in the mainspring spring 16 is effectively used to make it safer. The conveyor belt can be run and energy can be saved significantly without using any electric power. Furthermore, since both hands of the operator are free, other work can be performed simultaneously while driving the mainspring belt conveyor 41.

Embodiment 4
Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 7 is an enlarged left side view showing a drive portion of the mainspring type belt conveyor according to the fourth embodiment of the present invention. In addition, since most of the structure of the mainspring type belt conveyor concerning this Embodiment 4 is the same as that of Embodiment 1-3, the same code | symbol is attached | subjected to the same member and description is abbreviate | omitted.

  As shown in FIG. 7, even in the mainspring belt conveyor 51 according to the fourth embodiment, the input shaft 7 is rotated by the force of the feet instead of the hand, but unlike the third embodiment, the input lever 56 A foot pedal 57 is attached to the tip of the pedal. Here, since it is impossible to rotate the input lever 56 by about 150 degrees by stepping on the foot, a small-diameter gear 53 having 30 teeth is fixed to the input shaft 7, and the second gear is fixed to the gear 53. When the input lever 56 is rotated about 45 degrees by meshing the large-diameter gear 54 having 100 teeth fixed to the input shaft 55 and fixing the input lever 56 to the second input shaft 55, the input is performed. The shaft 7 is configured to rotate about 150 degrees. Therefore, the drive side frame 52 as one of the pair of frames is also enlarged by the amount that the rotation speed increase transmission mechanism is increased.

  In the mainspring belt conveyor 51 having such a configuration, when an operator steps on the foot pedal 57 with his / her foot, the input lever 56 rotates in the direction of the arrow, and the second input shaft 55 and the gear 54 also rotate integrally. Then, the meshing gear 53 is rotated in the arrow A direction. As a result, the input shaft 7 and the gear 23 are also rotated together to rotate the rotary shaft 21a in the direction of arrow B and the drive shaft 5a in the direction of arrow C, so that the mainspring spring 16 attached to the drive shaft 5a is moved. Roll up. When the operator rotates the foot pedal 57 by about 45 degrees, one end of the toothless portion 23a of the gear 23 reaches the meshing position of the gear 23 and the gear 22, and the gear 22 is idled. 16 is relaxed and both the drive shaft 5a and the rotation shaft 21a rotate in the direction opposite to the arrow, and the drive roller 5 also rotates integrally with the drive shaft 5a to feed the transport belt 4 in the direction of arrow D to run.

  Thus, in the mainspring belt conveyor 51 according to the fourth embodiment, the mainspring spring 16 is wound by human power only when necessary, and the elastic force stored in the mainspring spring 16 is effectively used to make it safer. The conveyor belt can be run and energy can be saved significantly without using any electric power. Furthermore, since both hands of the operator are free, other operations can be performed simultaneously while driving the mainspring belt conveyor 51.

  In Embodiment 1 described above, the example in which the gear 23 is made of FRP (fiber reinforced plastic) has been described. However, the gear 23 may be made using ordinary gear steel. Conversely, the other gears 20, 21, 22 can also be made of FRP. Also in the second embodiment, the gears 20, 21, 22, and 28 may be made of FRP. As a result, the rotation speed increasing transmission mechanism is lightened, and an effect that the load applied to the support leg 11 is reduced is obtained.

  In practicing the present invention, the configuration, shape, quantity, material, size, connection relationship, etc. of the other parts of the mainspring belt conveyor are not limited to the above embodiments.

  In carrying out the present invention, the conveying belt 4 side is restrained, the mainspring spring 16 is wound up within the range of the winding limit, the restraining of the conveying belt 4 side is released by a predetermined button operation, and the mainspring spring 16 It is also possible to arrange the mechanism so as to release the energy at once.

  The mainspring type belt conveyor according to the embodiment of the present invention is provided with a rotation speed increasing transmission mechanism between a drive shaft to which a drive roller for driving a conveyor belt is attached and an input shaft to which one end of an input lever is fixed. Therefore, when the input lever is held in the other direction and rotated in a predetermined direction, the rotation of the input shaft is transmitted to the drive shaft by many turns, and the mainspring spring attached to the drive shaft is wound up. When the hand is released, the mainspring spring is relaxed and the driving shaft is rotated by the stored elastic force, and the driving roller is also rotated integrally to run the conveyor belt. The travel distance of the conveyor belt can be freely adjusted by checking in advance the relationship between the angle at which the input lever is rotated and the rotational speed of the drive shaft. As a result, it is possible to run the conveyor belt as much as necessary without using electric power, and by rotating the input lever by an arbitrary angle within the range of the winding limit of the mainspring spring and returning it little by little, It is also easy to feed the conveyor belt by a minute distance (inching feed). In this manner, the mainspring can be manually wound only when necessary, and the conveyor belt can be run, and energy can be greatly saved without using any power, and fine control can be easily performed. .

  Therefore, since electricity is not used, it can be used for a work place around water, for example, a cooking room, an agricultural work place under a hot sun, or a conveyor to be brought into or out of the water tank. In the cooking room, the transfer of the waterproof structure such as an insulating transformer is not necessary for the transfer between the cooking room and the laying room, so that the conveyor is inexpensive.

  Further, when not driven, energy is not used at all, which is different from a conventional belt conveyor that is continuously operated at all times.

  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 is a side view showing the overall configuration of the mainspring type belt conveyor according to the first embodiment of the present invention, with the intermediate portion omitted. FIG. 2 is a plan view showing the entire configuration of the mainspring belt conveyor according to the first embodiment of the present invention with the intermediate portion omitted. FIG. 3 is a longitudinal sectional view showing the configuration of the drive part of the mainspring type belt conveyor according to the first embodiment of the present invention. FIG. 4 is an enlarged left side view of the driving portion of the mainspring type belt conveyor according to the first embodiment of the present invention. FIG. 5 is a longitudinal sectional view showing the configuration of the drive part of the mainspring type belt conveyor according to the second embodiment of the present invention. FIG. 6 is an enlarged left side view of the driving portion of the mainspring type belt conveyor according to the third embodiment of the present invention. FIG. 7 is an enlarged left side view showing a drive portion of the mainspring type belt conveyor according to the fourth embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,31,41,51 Mainspring type belt conveyor 2,52 One of a pair of frames 3 The other of a pair of frames 4 Conveying belt 5 Drive roller 5a Drive shaft 6 Drive roller 6a Drive shaft 7 Input shaft 8, 56 Input lever DESCRIPTION OF SYMBOLS 10 Support member 11 Support leg 16 Spring spring 17 Weight 18, 19 One-way clutch 23a Toothless part 34 Clutch mechanism 35 Rotary handle 45, 57 Foot pedal

Claims (8)

A pair of frames that are spaced apart from each other;
A drive roller attached to a drive shaft pivotally supported on one of the pair of frames so as to be integrally rotatable;
A driven roller attached to a driven shaft pivotally supported on the other of the pair of frames so as to be integrally rotatable;
An endless traveling belt that is stretched between the driving roller and the driven roller;
A support member for supporting the transport belt fixed at both ends to the pair of frames between the driving roller and the driven roller;
A mainspring spring rotatably connected to the drive shaft of the drive roller;
An input shaft pivotally supported on one of the pair of frames apart from the drive shaft;
A rotation speed increase transmission mechanism for transmitting rotation of the input shaft provided between the input shaft and the drive shaft of the drive roller to the drive shaft by increasing the rotation speed;
An input lever having one end fixed to the input shaft ;
The drive roller is attached to the drive shaft so that it does not rotate when the drive shaft rotates in the direction in which the mainspring spring is wound up, and rotates when the drive shaft rotates in the direction in which the mainspring spring is relaxed. A mainspring-type belt conveyor comprising a one-way clutch and a one-way clutch . The rotational speed increase transmission mechanism is composed of a combination of a plurality of gears including a gear fixed to the input shaft and the drive shaft, and the rotation shaft,
The gear fixed to the input shaft has no teeth so that the mainspring is disengaged from the gear engaged with the gear at a position where the mainspring spring is sufficiently wound by rotating the input lever. The mainspring type belt conveyor according to claim 1, wherein a portion is provided. One or more gears other than the gear fixed to the input shaft and the drive shaft among the plurality of gears constituting the rotation speed increasing transmission mechanism rotate in the direction in which the mainspring spring is wound up. The rotary shaft is attached to the rotary shaft via a one-way clutch so that the rotary shaft rotates integrally when the main shaft is rotated, and the rotational force is not transmitted when the drive shaft rotates in the direction in which the mainspring spring is relaxed. The mainspring type belt conveyor according to claim 1 or 2 . The mainspring belt according to any one of claims 1 to 3 , wherein a weight is attached around the entire circumference of the drive roller in order to increase inertia of the drive roller. Conveyor. The mainspring according to any one of claims 1 to 4 , wherein a plurality of support legs are attached to both sides of the support member to support the conveyor belt at a required height. Belt conveyor. The mainspring belt conveyor according to any one of claims 1 to 5 , wherein a rotary handle is attached to one end of the input shaft instead of the input lever. The mainspring belt conveyor according to claim 6 , wherein a clutch mechanism is provided between the input shaft and the rotary handle. The mainspring belt according to any one of claims 1 to 5 , wherein a foot pedal for transmitting rotational force to the input shaft is provided instead of the input lever or at a tip of the input lever. Conveyor.

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