JP2008285275A - Winding belt type elevating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a winding belt type elevating device capable of restraining abrasion and damage of a flat belt and smoothly winding up and delivering the flat belt. <P>SOLUTION: This winding belt type elevating device is provided with: cross direction guide rollers 12, 12 extending downward as their base end parts are supported by a supporting shaft 10 in parallel with a horizontal rotation axis 3, arranged opposed to cross direction both end edges of the flat belt 5 trailing from a winding pulley 4 and to regulate movement in the cross direction of the flat belt 5 by guiding the both end edges in the cross direction by a roller rotating around the supporting shaft roughly orthogonal with a front surface 5A and a back surface 5B of the flat belt 5; and thickness direction guide rollers 13, 13 arranged opposed to the front surface 5A and the back surface 5B of the flat belt 5 and making an oscillating arm 11 follow variation of a trailing position due to increase and decrease of a winding diameter of the flat belt 5 against the winding pulley 4 by the roller rotating around the supporting shaft in parallel with the horizontal rotation axis 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a take-up belt type lifting device that lifts and lowers a conveyed object by winding or feeding a flat belt wound around a take-up pulley that is driven and rotated by a drive device.

As a conventional take-up belt type lifting device, a take-up pulley with a hook, which is lifted up and down in a state where a cared person is suspended, is wound with a flat belt having a hanger attached to the lower end at a lower end. One that is driven by a motor (see, for example, Patent Document 1), one that raises and lowers a load while the load is suspended, and a collar (flange) that is wound with a flat belt with a hook attached to the lower end of the load. ) With a winding pulley (winding body) with a motor (for example, see Patent Document 2).
Further, in Patent Document 2, a flat belt is inserted into a rectangular hole-shaped belt conducting portion provided in a belt guide, both ends in the width direction of the flat belt are guided by the belt conducting portion, and the flat belt for the take-up pulley is also disclosed. There is a disclosure of a configuration in which the belt guide is slid in the horizontal direction in accordance with the increase or decrease of the winding diameter.

Japanese Utility Model Publication No. 7-31787 (FIGS. 2-3 and 5-6) Japanese Patent Laid-Open No. 10-45388 (FIGS. 1 and 7)

In the configuration of Patent Document 1, when the flatness of the flat belt is taken up, for example, when the level of the horizontal rotation shaft of the take-up pulley is not obtained, the flat belt bias accumulates, and the edge in the width direction of the flat belt is wound. There is a case where it is rubbed against the hook of the take pulley, and as a result, there is a problem that the edge in the width direction of the flat belt is frayed.
On the other hand, in the configuration of Patent Document 2, since the flat belt is inserted into a rectangular hole-shaped belt conducting portion provided in the belt guide, the widthwise edge of the flat belt may rub against the flange of the take-up pulley. Absent.
However, since the suspension point is relatively long and the length to the center of gravity of the take-up belt type lifting device (belt type hoisting machine) is relatively long, the suspended load swings in the width direction of the flat belt. When wound up, the wall surface of the belt hole in the rectangular hole shape of the belt guide and the edge in the width direction of the flat belt slide and wear.
In addition, the belt guide can prevent the flat belt from being twisted during the horizontal pulling work or when the suspended load swings in the direction perpendicular to the flat belt surface. Since the flat belt is inserted into the conducting portion, the front or back surface of the flat belt is worn.
Further, during the lateral pulling operation, etc., the belt guide slides horizontally along the guide strip while the flat belt is inserted into the rectangular hole-shaped belt conducting portion of the belt guide. May be worn or damaged due to bending in the vertical direction.
The above-mentioned flat belt wear and breakage is remarkable particularly when the load is heavy.

  Therefore, in view of the above-described situation, the present invention intends to solve the problem that the flat belt can be prevented from being worn or damaged, and even when the load is heavy, the flat belt can be smoothly wound or fed out. It is in the point which can provide a winding belt type lifting device.

  In order to solve the above problems, the winding belt type lifting device according to the present invention loads a load by winding or unwinding a flat belt wound around a winding pulley driven by a driving device and rotating around a horizontal rotation shaft. A take-up belt type lifting device for lifting and lowering, wherein a base end portion is supported by a support shaft parallel to the horizontal rotation shaft and extends downward, and a free end portion of a swing arm swinging around the support shaft, The both edges in the width direction are guided by rollers that rotate around a support shaft that is substantially orthogonal to the front and back surfaces of the flat belt, which are arranged opposite to both edges in the width direction of the flat belt that hangs down from the take-up pulley. A width direction guide roller that restricts movement of the flat belt in the width direction, and a roller that is disposed opposite to the front and back surfaces of the flat belt and rotates about a support shaft parallel to the horizontal rotation axis, Against the take-up pulley Wherein those formed by providing a said thickness direction guide roller to follow the swing arm to change the droop position by winding diameter increment decrease of the flat belt.

  In order to solve the above problems, the winding belt type lifting device according to the present invention is driven by a driving device and is wound or fed out by a flat belt wound around a winding pulley that rotates around a horizontal rotating shaft. A take-up belt type lifting device for lifting and lowering a load, wherein a base end portion is supported by a support shaft parallel to the horizontal rotation shaft and extends downward, and a free end portion of a swinging arm swinging around the support shaft Further, the both ends in the width direction are formed by rollers that rotate around a spindle substantially orthogonal to the front surface and the back surface of the flat belt disposed opposite to the both ends in the width direction of the flat belt that hangs down from the take-up pulley. The guide belt regulates the movement of the flat belt in the width direction, and increases or decreases the winding diameter of the flat belt with respect to the take-up pulley by the ridges extending from both side surfaces of the roller onto the front and back surfaces of the flat belt. Drooping position by Those formed by providing a flanged rollers to follow the swing arm to change.

According to the take-up belt type lifting apparatus according to the present invention, a take-up belt that is driven by a drive device and lifts and lowers a load by winding or feeding a flat belt wound around a take-up pulley that rotates around a horizontal rotation shaft. A lifting and lowering device, wherein a base end portion is supported by a support shaft parallel to the horizontal rotation shaft, extends downward, and swings around the support shaft to a free end portion of the swing arm from the take-up pulley. The both ends of the flat belt are guided by the rollers, which are arranged to oppose the both ends of the flat belt in the width direction and rotate around a spindle that is substantially orthogonal to the front and back surfaces of the flat belt. A width direction guide roller that restricts movement in the width direction, and a roller that rotates around a support shaft parallel to the horizontal rotation axis and that is disposed opposite to the front and back surfaces of the flat belt. Of the flat belt A thickness direction guide roller is provided to allow the swing arm to follow the change in the hanging position due to the increase or decrease of the diameter of the winding. Therefore, even when the horizontal rotation axis of the take-up pulley is not level, the width direction guide Since the both edges in the width direction of the flat belt are guided by the rollers, the edges in the width direction are not rubbed against the scissors of the take-up pulley.
In addition, since the swing arm follows the variation of the hanging position due to the increase and decrease of the winding diameter of the flat belt relative to the winding pulley, the thickness direction guide roller follows the swing arm. In addition, the width direction guide roller can stably and surely guide both edges in the width direction of the flat belt.
Furthermore, the guide members that come into contact with the flat belt are the width direction guide roller and the thickness direction guide roller disposed at the free end of the swing arm. Wear and breakage of the flat belt due to contact can be suppressed, and even when the load is heavy, the flat belt can be wound or fed smoothly.

Further, according to the winding belt type lifting apparatus according to the present invention, the winding belt is lifted and lowered by winding or feeding the flat belt wound around the winding pulley driven by the driving device and rotating around the horizontal rotation shaft. A take-up belt type lifting device, wherein a base end portion is supported by a support shaft parallel to the horizontal rotation shaft, extends downward, and is attached to the free end portion of a swing arm swinging about the support shaft. The both ends in the width direction are guided and guided by rollers that rotate around a support shaft that is substantially orthogonal to the front and back surfaces of the flat belt, which are arranged opposite to both ends in the width direction of the flat belt that hangs down from the pulley. Fluctuation in drooping position due to increase or decrease in winding diameter of the flat belt relative to the take-up pulley due to wrinkles that restrict the movement of the belt in the width direction and extend from both sides of the roller to the front and back surfaces of the flat belt On the rocking Since a roller with a hook that follows the belt is provided, both edges in the width direction of the flat belt are guided by the roller of the hook roller even when the horizontal rotation axis of the winding pulley is not leveled. Therefore, the edge in the width direction is not rubbed against the winding pulley by rubbing.
In addition, since the swing arm follows the hook of the hooked roller extending on the front and back surfaces of the flat belt, the swing arm follows the fluctuation of the drooping position due to the flat belt winding diameter increase / decrease relative to the winding pulley. Even in the drooping position of the flat belt that fluctuates due to the increase or decrease in diameter, both edges in the width direction of the flat belt can be stably and reliably guided by the rollers of the hooked roller.
Furthermore, the guide member that contacts the flat belt is a flanged roller disposed at the free end of the swing arm, and the flanged roller rotates. The belt can be prevented from being worn or damaged, and the flat belt can be smoothly wound or fed even when the load is heavy.
In addition, by using a roller with a flange, it is possible to eliminate the thickness direction guide rollers located on the front surface side and the back surface side of the flat belt. Therefore, the cost can be reduced by simplifying the configuration.

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments shown in the accompanying drawings, and includes all the embodiments that satisfy the requirements described in the claims. It is a waste.
In the overhead conveyor shown as an example of use of the winding belt type lifting device, the transport direction (see arrow F in FIG. 1) in which the carrier advances along the traveling rail is the front, the opposite direction is the rear, It shall be said forward. Moreover, let the figure seen from back be a front view.

  FIG. 1 is a left side view showing an overhead conveyor provided with winding belt type lifting devices according to an embodiment of the present invention on the front, rear, left and right sides of the carrier, and FIG. 2 is a winding belt type lifting and lowering device according to an embodiment of the present invention. 3 and 4 are the left side view, FIG. 5 is a longitudinal front view showing an enlarged main part, FIG. 6 is a cross-sectional view taken along the line AA in FIG. 5, and FIG. It is arrow BB sectional drawing. FIG. 3 shows a state in which the flat belt is wound around the take-up pulley and the load is raised, and FIG. 4 shows a state in which the flat belt is fed from the take-up pulley and the load is lowered.

As shown in FIG. 1, the overhead conveyor 21 is supported by front and rear load trolleys 24, 24, a carrier 22 capable of traveling along the traveling rail R, and a winding belt attached to the front, rear, left and right of the frame 22 </ b> A of the carrier 22. Are connected to the load connecting portions 17 of the take-up belt lifting devices 1,... And the hanger 23 on which the article W to be conveyed is placed.
Here, FIG. 1 shows an example in which the carrier 2 travels by being pulled by a self-propelled travel drive device 25 traveling on the travel rail R. As a drive device for the carrier 2, a power chain drive is used. An apparatus or a friction roller type driving apparatus may be used.
Moreover, in the example shown in FIG. 1, the load which moves up and down by winding or feeding the flat belts 5 of the winding belt type lifting devices 1,... Is the hanger 23 and the object W to be conveyed, and the front and rear winding belts. When the front and rear flat belts 5 and 5 are fed out at a constant speed by synchronizing the vertical lifting devices 1 and 1, the conveyed object W descends without changing the posture, and similarly the front and rear flat belts 5 and 5 are made constant speed. If it is wound up, the conveyed object W rises without changing its posture, and if the previous flat belt 5 is fed out faster than the subsequent flat belt 5, the conveyed object W descends while tilting forward, and the previous flat belt 5 Is wound faster than the subsequent flat belt 5, the conveyed object W rises while tilting backward.
Therefore, the overhead conveyor 21 using such a take-up belt type lifting device 1,... Is lowered from the processing tank to the processing tank for electrolytic coating processing etc. on the lower side of the normal conveying line and from the processing tank. It is suitable for use in, for example, a painting facility for a car body of an automobile that raises the object W to be conveyed to a normal conveyance line. In addition, as compared with the configuration in which the article to be conveyed W is moved up and down by winding or unwinding the chain, it is a structure in which the object to be conveyed W is moved up and down by winding or unwinding the flat belt, so that the weight can be reduced. At the same time, the lifting and lowering operation of the conveyed object W can be performed smoothly and quietly.

Next, the detail of a structure of the winding belt type raising / lowering apparatus 1 is demonstrated.
As shown in FIGS. 2 to 6, the take-up belt type lifting device 1 includes a base 6 connected and fixed to a support member (for example, the frame 22 </ b> A of the carrier 22 in the example shown in FIG. 1). A housing 8 supported so as to be swingable around the support shaft 7, a drive device 2 constituted by a geared motor having an orthogonal shaft configuration using, for example, a hypoid gear or a bevel carrier supported by the housing 8, and a horizontal rotation by the housing 8 in the horizontal direction. A winding pulley 4 that is rotatably supported around the shaft 3 and is connected to the output shaft of the driving device 2 and rotates around the horizontal rotating shaft 3, a flat belt 5 wound around the winding pulley 4, and a flat belt The width direction guide rollers 12 and 12 facing the both edges 5C and 5C of the width direction 5 and the thickness direction guide rollers 13 and 13 facing the front surface 5A and the back surface 5B of the flat belt 5 are provided. A swing arm 11 provided at the end and supported at a base end by a support shaft 10 parallel to the horizontal rotation shaft 3 and extending downward, a terminal portion 15 having a loop shape by bending the lower end of the flat belt 5, a terminal portion The support shaft 16 is inserted into 15 loops, the load connecting portion 17 is connected to the support shaft 16, and the like.
Here, in the state where the flat belt 5 shown in FIG. 3 is wound around the take-up pulley 4 and the load is raised, the flat belt 5 hangs down from a position relatively distant from the horizontal rotating shaft 3, and FIG. In the state where the belt shown is drawn out from the take-up pulley and the load is lowered, the flat belt 5 hangs down from a position relatively close to the horizontal rotating shaft 3. Thus, the drooping position of the flat belt 5 varies in the front-rear direction by increasing or decreasing the winding diameter of the flat belt 5 with respect to the winding pulley 4.
Further, the surface 5A of the flat belt 5 is an upper (outside) surface in the state of being wound around the winding pulley 4 (the front surface in FIGS. 2 to 4 in a suspended state), and the back surface 5B of the flat belt 5 is The lower side (inner side) surface (the rear surface in FIGS. 2 to 4 in a suspended state) is shown in the state of being wound around the winding pulley 4.

Next, the configuration and operation of the swing arm 11 will be described in detail.
As shown in FIGS. 5 to 7, the widthwise end edges of the flat belt 5 are sandwiched between the free end portions of the left and right downward extending plates 11 </ b> A and 11 </ b> A of the swing arm 11. A width-direction guide roller that is supported by a support shaft 12A in the front-rear direction (support shaft substantially orthogonal to the front surface 5A and the back surface 5B of the flat belt 5) and a bearing 12B, and rotates about the support shaft 12A. 12 and 12 are disposed, the movement of the flat belt 5 in the width direction is restricted by these rollers 12 and 12.
Further, the free end portion is opposed to the front surface 5A and the back surface 5B so as to sandwich the front surface 5A and the back surface 5B of the flat belt 5 and is parallel to the horizontal rotation axis 3 in FIGS. ) Thickness direction guide rollers 13 and 13 that are supported by the support shaft 13A and the bearing 13B and rotate around the support shaft 13A are disposed, so that the take-up pulley 4 as described above is provided by these rollers 13 and 13. Even if there is a change in the hanging position of the flat belt 5 due to an increase or decrease in the winding diameter of the flat belt 5, the swing arm 11 swings around the support shaft 10 as shown in FIGS. Move.
Further, as shown by a two-dot chain line in FIG. 7, when the load is suspended or the suspended load swings in the vertical direction with respect to the front surface 5 </ b> A (back surface 5 </ b> B) of the flat belt 5, The swing arm 11 follows the swing of the flat belt 5 accompanying the swing.

With the configuration described above, even if the flat belt 5 is wound or fed out in a state where the width direction guide roller 12 abuts against the width direction edge 5C of the flat belt 5 and a frictional force is generated, the width direction guide roller 12 rotates so that the edge 5C in the width direction of the flat belt 5 does not rub against the width direction guide roller 12, and the guide roller 13 in the thickness direction comes into contact with the front surface 5A or the back surface 5B of the flat belt 5 to cause friction. Even if the flat belt 5 is wound or fed out in a state where force is generated, the thickness direction guide roller 13 rotates, so that the front surface 5A or the back surface 5B of the flat belt 5 is rubbed against the thickness direction guide roller 13 and worn. There is nothing to do.
Therefore, wear and breakage of the flat belt 5 can be suppressed by the width direction guide rollers 12 and 12 and the thickness direction guide rollers 13 and 13 which are guide members abutting on the flat belt 5, and the load can be reduced. Even when the weight is heavy, the flat belt 5 can be smoothly wound or fed.

When the swing in the vertical direction with respect to the front surface 5A (back surface 5B) of the flat belt 5 becomes large or when the flat belt 5 is broken for some reason, the base of the swing arm 11 is shown in FIG. Since the detection piece 11C attached to the upper surface of the free end of the horizontal extension portion 11B extending rearward from the end portion is separated from the dog 9A of the limit switch 9, the flat belt 5 is in a state where the sway of the flat belt 5 is larger than a reference value or Breakage of the flat belt 5 can be detected.
In FIG. 2, the distance between the support shaft 7 in the front-rear direction and the center of gravity of the take-up belt type lifting device 1 is set to be relatively close. As shown by the two-dot chain line in FIG. The entire apparatus 1 swings around the support shaft 7 and the width direction guide rollers 12 and 12 rotating around the front and rear direction axis contact the both ends 5C and 5C of the flat belt 5 in the width direction. Wear of the width direction edges 5C and 5C of the flat belt 5 can be suppressed.

FIG. 8 is a schematic perspective view showing another configuration example such as a width direction guide roller.
As shown in FIG. 8 (a), at the free end portion of the swing arm 11 (not shown) (see FIGS. 5 to 7), instead of the width direction guide rollers 12 and 12 shown in FIGS. Bearings 14 and 14 that rotate about the direction support shafts (support shafts substantially orthogonal to the front surface 5A and the back surface 5B of the flat belt 5) 14A and 14A so as to sandwich the edges 5C and 5C in the width direction of the flat belt 5 Further, the two ends 5C and 5C may be arranged opposite to each other in the width direction.
Further, the flanges 14B and 14B of the flanged rollers (both flange types) 14 and 14 extend on the front surface 5A and the back surface 5B of the flat belt 5, so that FIG. 2 to FIG. 7 and FIG. As shown in FIG. 8B, the thickness direction guide rollers 13 and 13 shown in FIG. 8B are eliminated, and only the flanged rollers 14 and 14 rotating around the support shafts 14A and 14A are used. 2 to 7 and 8 which are also provided with thickness direction guide rollers 13 and 13 according to such a configuration. While having the same effect as the configuration of (a), it is possible to reduce the cost by simplifying the configuration.

In the above description, in the overhead conveyor 21 in FIG. 1 shown as an example in which the winding belt type lifting device 1 is used, the width direction of the flat belt 5 in the winding belt type lifting device 1 is the left-right direction. Although shown, the width direction of the flat belt 5 may be the front-rear direction.
Further, the winding belt type lifting device 1 according to the present invention is not limited to the application to the overhead conveyor 21, and lifts and lowers the conveyed object by winding or feeding the flat belt 5, and the swing arm 11. In addition, since the width direction guide rollers 12, 12 and the thickness direction guide rollers 13, 13 or the flanged rollers 14, 14, etc., are compared with the configuration in which the conveyed object is moved up and down by winding or feeding the chain. In addition, the weight can be reduced, and the lifting and lowering operation of the conveyed object can be performed smoothly and quietly, so that it can be applied to various uses.

It is a left view which shows the overhead conveyor provided with the winding belt type raising / lowering apparatus which concerns on embodiment of this invention before and behind the carrier. It is a front view of a winding belt type lifting device according to an embodiment of the present invention. Similarly, it is a left side view and shows a state in which the flat belt is wound around the winding pulley and the load is raised. Similarly, it is a left side view and shows a state in which the flat belt is fed from the take-up pulley and the load is lowered. It is a vertical front view which expands and shows the principal part. It is arrow AA sectional drawing of FIG. It is arrow BB sectional drawing of FIG. It is a schematic perspective view which shows another structural example, such as a width direction guide roller, (a) is the example which comprised the width direction guide roller with the hooked roller, (b) is the width direction of a flat belt only with the hooked roller. The example which performs the tracking to the fluctuation | variation of this and the fluctuation | variation of the drooping position of a flat belt is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Winding belt type raising / lowering device 2 Driving device 3 Horizontal rotating shaft 4 Winding pulley 5 Flat belt 5A Front surface 5B Back surface 5C Edge 10 in the width direction Shaft 11 Swing arm 11A Extending plate 11B Horizontal extending part 12 Width direction Guide roller 12A Support shaft 12B Bearing 13 Thickness direction guide roller 13A Support shaft 13B Bearing 14 Roller 14A Support shaft 14B 鍔 (Flange)
15 Terminal portion 16 Support shaft 17 Load connecting portion 21 Overhead conveyor 22 Carrier 23 Hanger 24 Load trolley 25 Travel drive device R Travel rail W Conveyed object

Claims (2)

A winding belt type lifting device driven by a driving device and lifting and lowering a load by winding or unwinding a flat belt wound around a winding pulley that rotates around a horizontal rotation axis,
A base end portion is supported by a support shaft parallel to the horizontal rotation shaft and extends downward, and a free end portion of a swing arm that swings around the support shaft,
The both edges in the width direction are guided by rollers that rotate around a support shaft that is substantially orthogonal to the front and back surfaces of the flat belt, which are arranged opposite to both edges in the width direction of the flat belt that hangs down from the take-up pulley. A width direction guide roller for restricting movement of the flat belt in the width direction;
Due to the roller that rotates around a support shaft parallel to the horizontal rotation axis and that is disposed opposite to the front and back surfaces of the flat belt, the drooping position varies due to increase or decrease of the winding diameter of the flat belt relative to the winding pulley. A thickness direction guide roller that follows the swing arm;
Winding belt type lifting device. A winding belt type lifting device driven by a driving device and lifting and lowering a load by winding or unwinding a flat belt wound around a winding pulley that rotates around a horizontal rotation axis,
A base end portion is supported by a support shaft parallel to the horizontal rotation shaft and extends downward, and a free end portion of a swing arm that swings around the support shaft,
The both edges in the width direction are guided by rollers that rotate around a support shaft that is substantially orthogonal to the front and back surfaces of the flat belt, which are arranged opposite to both edges in the width direction of the flat belt that hangs down from the take-up pulley. The flat belt is controlled to move in the width direction, and is hung by increasing / decreasing the winding diameter of the flat belt with respect to the take-up pulley by hooks extending from both sides of the roller to the front and back surfaces of the flat belt. A take-up belt type lifting device provided with a roller with a hook that causes the swing arm to follow a change in position.

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