JP2002154799A - Driving device for load-applied long-sized traveling body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the occurrence of a slip even if load becomes large by fluctuating frictional force between a traveling body and a drive rotation body, corresponding to the magnitude of load. SOLUTION: This driving device is constituted to wind a belt-like long-sized traveling body with a width onto the outer peripheral surface of a drive rotation body and to drive the traveling body to travel by the rotation of the drive rotation body. A pressure roller is applied from the outer peripheral surface of the traveling body to press the traveling body to the outer peripheral surface of the drive rotation body to thereby generate frictional force between the traveling body and the drive rotation body, and the pressing force of the pressure roller is fluctuated corresponding to the magnitude of load applied to the traveling body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving device for a long traveling body such as a winch, a lift, and a conveyor device for moving a load from a first position to a second position, and particularly to a belt to which a load is applied. The present invention relates to a driving device for driving a long traveling body such as described above while changing the frictional force according to the magnitude of the load so as not to cause slippage.

[0002]

2. Description of the Related Art Conventionally, a load transfer such as a winch, a lift, a conveyer or the like for moving a desired load such as an article or a person from a first position separated horizontally or vertically from a first position to a second position. The device is known, and generally a long traveling body such as a wire, a rope, a belt, and a chain having a required length is bridged between a first position and a second position, and is driven by a motor or the like. The vehicle is caused to travel, and the load placed on the traveling body is moved. The long traveling body is usually endlessly or wound around a pulley, a roller, or a sprocket between the first position and the second position, and is driven and driven.

[0003] A long running body such as a wire, a rope, a belt or the like can travel and move the load without any trouble even when the running track is bent or curved halfway. When the applied load is excessive, the running body slips between the driving rotating body and the running body to achieve smooth running, because the running body is driven by the frictional force between the driving rotating body such as the driving rotating roller. Have a problem that cannot be done. As a general method of increasing the frictional force between the driving rotating body and the traveling body, a constant tension is applied to the traveling body by a spring to increase the frictional force between the traveling body and the driving rotating body to eliminate slippage. It is publicly known that an
-351346. However, in such a frictional force increasing mechanism, since the tension between the driving rotating body and the traveling body provided by the spring is constant, the frictional force is also constant, and the occurrence of slip is suppressed for an excessively heavy load. It was difficult.

[0004]

SUMMARY OF THE INVENTION The present invention makes it possible to change the frictional force between the traveling body and the driving rotary body in accordance with the magnitude of the load, thereby suppressing the occurrence of slip even when the load becomes large. The task is to do.

[0005]

In order to solve the above-mentioned problems, the present invention adopts a method in which a long belt-like traveling body having a width is wound around an outer peripheral surface of a driving rotator. A driving device configured to drive and drive the traveling body by rotation, wherein the traveling body is pressed against the outer peripheral surface of the driving rotating body by applying a pressing roller from the outer peripheral surface of the traveling body, and It is characterized in that a frictional force is generated therebetween, and that the pressing force of the pressing roller is varied according to the magnitude of the load applied to the traveling body.

[0006] A pressing roller is supported on the distal end of an arm whose base end is supported on a fixed shaft, and the pressing roller is swingable toward the outer peripheral surface of the driving rotary body. A traveling body is mounted on the pressing roller. Thus, the pressing roller is swung toward the driving rotary member in accordance with the magnitude of the load.

A traveling body is mounted on the distal end of an arm whose base end is pivotally supported on a fixed shaft, and a load receiving roller for receiving the load of the traveling body is pivotally supported, and a pressing roller is pivotally supported at the center of the arm. The arm is swung by a load applied to the load receiving roller provided by the traveling body, and the swing presses the pressing roller against the outer peripheral surface of the driving rotating body.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below. The present invention is configured such that a belt-like long traveling body having a width is wound around an outer peripheral surface of a driving rotator to drive and drive the traveling body by rotation of the driving rotator. Applying a pressing roller from the surface to press the traveling body against the outer peripheral surface of the driving rotating body, so as to generate a frictional force between the traveling body and the driving rotating body,
The pressing force of the pressing roller is varied in accordance with the magnitude of the load applied to the traveling body. By varying the pressing force of the pressing roller in accordance with the magnitude of the load, when the load is large, the traveling body can be pressed against the driving rotating body with a large pressing force to generate a large frictional force. Can be prevented from slipping. When the load is small, the pressing force is small, and there is no extra frictional force. Therefore, the rotational force of the driving traveling body can be reduced.

In order to vary the pressing force of the pressing roller in accordance with the load, the pressing roller is disposed so as to be able to freely contact and separate from the outer peripheral surface of the driving rotary member, and the traveling body is directly or indirectly brought into contact with the pressing roller. Thus, the pressing roller is brought into contact with or separated from the driving rotating body in accordance with the magnitude of the load applied to the traveling body.
In order to directly associate the pressing roller with the traveling body, the pressing roller is pivotally supported on the other end of a swingable arm having one end pivotally supported on a fixed shaft, and the traveling body is mounted on the pressing roller to determine the magnitude of the load. The pressing roller is moved toward and away from the driving rotator according to the above. or,
Indirectly related, a roller for mounting a traveling body is supported on the other end of a swingable arm whose one end is supported on a fixed shaft, and a pressing roller is supported on a central point of force of the arm. The arm is swung in accordance with the magnitude of the load to move the pressing roller toward and away from the driving rotary member. The driving rotating body is formed of a roller having a required diameter, and an outer peripheral surface is preferably provided with a non-slip layer of rubber or the like for increasing frictional force,
The required driving torque is transmitted to the shaft center. The traveling body is wound so as to make substantially one round around the outer peripheral surface of the driving rotating body,
A pressing roller is arranged outside the traveling body wound around the driving rotating body, and presses the traveling body against the outer peripheral surface of the driving rotating body. Although a single pressing roller may be used, a plurality of pressing rollers are preferably arranged according to the diameter of the driving rotary member and the magnitude of the design load.

[0010]

Embodiment 1 FIG. 1 shows an example in which a building material conveying apparatus to which a drive device according to the present invention is applied is installed at a building site of a house, and a guide rail (1) which rises vertically and then turns horizontally.
A carrier (3) on which a building material (2) such as a tile or a floor material is placed is mounted so as to run freely, and the carrier (3) has a long belt-like traveling body (4). ) Are connected, and the belt-shaped traveling body (4)
As the vehicle travels, the transport body (3) moves forward or backward on the guide rail. The belt-shaped traveling body (4) is endlessly mounted between the distal end and the proximal end of the guide rail (1), and is provided with a rail (1).
It is connected to a driving device (5) installed at the base of the vehicle and is driven and driven. A plurality of guide rollers for guiding the belt-like running body (4) are provided at appropriate places on the rail (1) as necessary, so that the running of the belt-like running body (4) is stabilized.

Referring to FIGS. 2 to 5, the driving device (5) has a large-diameter driving rotator (6) disposed between two frame plates (7). 6) is driven and rotated by connecting the shaft center to a drive source such as a motor. A non-slip layer (8) of rubber or the like is formed on the outer peripheral surface of the driving rotating body (6) in order to increase the frictional contact force with the belt-shaped traveling body. (9) is a driving rotating body
A pressure roller disposed outside of (6), wherein the frame plate (7)
The arm (11) is pivotally supported at the other end of an arm (11) pivotally supported at one end by a fixed shaft (10) pivotally supported by the arm (1).
Due to the swing of 1), it comes into contact with and separates from the outer peripheral surface of the driving rotator 6. A guide roller (12) is rotatably supported on a fixed shaft (10) that pivotally supports the arm (11), and guides the belt-shaped traveling body (4). In the illustrated embodiment, the combination of the pressing roller (9) and the arm (11) is arranged in three pairs on the upper side of the driving rotary body (6) and three pairs on the lower side, a total of six pairs, but is limited to this. Not something. However, in order to wind and mount the belt-shaped traveling body (4) on the outer peripheral surface of the driving rotary body (6), one pair is respectively assigned to the entrance side and the exit side of the upper half of the driving rotary body (6). Also, it is necessary to similarly arrange a pair on the lower side. It is also possible to arrange and wind a pair on the upper half and the lower half of the drive rotating body (6),
In this case, if the diameter of the driving rotator becomes large, there is a possibility that a sufficient pressing force cannot be obtained.

A belt-like traveling body (4) endlessly mounted between the leading end and the base end of the guide rail (1) and connected to the transporting body (3) is connected to the entrance-side guide roller (13). It is guided to the upper side of the driving rotator (6), and is wound around the outer peripheral surface of the driving rotator (6) by the upper intermediate guide roller (14) while being in contact with the upper side of each upper pressing roller (9). . Drive rotator (6) almost 1
The belt-shaped traveling body (4) wound around is guided by the lower intermediate guide roller (15) toward the lower pressing roller (9), and comes out while abutting on the lower side of the lower pressing roller (9). Side guide roller
It is guided to the carrier (3) by (16). Belt-like traveling body
(4) is configured to contact the upper or lower side of each pressing roller (9) to press the pressing roller (9) toward the outer peripheral surface of the driving rotating body (6). The pressing force of the pressing roller fluctuates according to the magnitude of the load applied to 4), and the frictional force between the belt-like traveling body and the driving rotator wound around the outer peripheral surface of the driving rotator fluctuates. For this reason, when the load is large, a large pressing force is generated and the frictional force is increased, so that the slip of the belt-shaped traveling body (4) can be suppressed.

FIG. 5 shows a mechanism for removing the slack of the belt-shaped traveling body (4). The mechanism extends horizontally on a fixed plate (17) fixedly arranged below the guide rail (1). A roller (1) which forms a hole (18) and is guided in the
9), a belt-shaped traveling body (4) is mounted thereon, and the rollers (1) are
9) is always pulled outward by a spring (20) to take up the slack of the belt. The locking mechanism is provided between the side where the belt-shaped traveling body (4) is fed into the driving device (5) and the transporting body.
Installed during (3). That is, the belt is arranged on the side where the load is not directly applied, thereby preventing the belt from being cut by the load. However, instead of such a loosening prevention mechanism, the entrance guide roller (13) and the exit guide roller (16) are
(7) The roller (13) and (16) are arranged so as to be able to freely contact and separate along the long hole formed in (7), and always urge the rollers (13) and (16) in the direction approaching by a spring, and the looseness of the belt is removed by the contact and separation of both rollers You may do it.

[0014]

Embodiment 2 A second embodiment of the present invention will be described with reference to FIGS. The second embodiment differs from the first embodiment in the structure of the arm supporting the pressing roller. Other points are substantially the same as those of the first embodiment. In the second embodiment, the arm (22) is formed of a member having a length whose base end is supported by the frame plate (7) by a fixed shaft (21),
(23) is rotatably supported, and a pressing roller (24) is rotatably supported on the way. The arm (22) is arranged in a pair on the upper side and the lower side of the driving rotary body (6). The pressing roller (24) is connected to the arm (2
It is pivotally supported by a rocking plate (25) pivotally supported by 2). The arm (22) is provided with a spring (2) extended on the fixed shaft (21).
Due to the resilience of (6), it is constantly urged away from the driving rotary body (6). The belt-shaped traveling body (4) is wound around a load receiving roller (23) pivotally supported at the tip of the arm, and the arm (22) is driven by the driving rotator () against the elastic force of the spring (26). 6)
, And the pressing force fluctuates according to the magnitude of the applied load. After the belt-shaped traveling body (4) is wound around the load receiving roller (23), the belt-shaped traveling body (4) is mounted on the driving rotary body so as to make substantially one round around the outer peripheral surface of the driving rotary body. When the belt-like traveling body (4) travels with a load placed thereon, the arm (22) swings toward the driving rotating body (6), and the driving rotating body (4) is pressed with a pressing force corresponding to the magnitude of the load. The pressing roller (24) is pressed against the outer peripheral surface of 6). Upon receiving the pressing force of the pressing roller, the belt-shaped traveling body comes into close contact with the outer peripheral surface of the driving rotating body (6), and a frictional force corresponding to the pressing force is generated, and the rotation is transmitted. Since the arm (22) pulls the belt-shaped traveling body (4) by the elastic force of the spring (26) added to the arm, it is possible to simultaneously prevent the belt-shaped traveling body from loosening. It becomes possible to eliminate the need for the locking mechanism as shown in FIG.

[0015]

According to the present invention, the pressing roller is moved toward and away from the outer peripheral surface of the driving rotary body in accordance with the magnitude of the load applied to the running body, and the running body is wound around the driving rotary body. Since the frictional force between the rotating body and the drive rotating body is changed, the frictional force of the running body can be changed according to the magnitude of the load, and the slipping of the running body can be effectively prevented. Become.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a construction material transfer device to which a drive device of the present invention is applied.

FIG. 2 is a side view of the driving device according to the first embodiment.

FIG. 3 is a plan view of the same.

FIG. 4 is a perspective view showing a pressing roller.

FIG. 5 is a schematic view showing a belt loosening prevention mechanism.

FIG. 6 is a side view of the driving device according to the second embodiment.

FIG. 7 is a plan view of the same.

FIG. 8 is a perspective view showing the pressing roller.

[Explanation of symbols]

 (1) Guide rail (2) Building material (3) Carrier (4) Belt-like traveling body (5) Driving device (6) Driving rotating body (7) Frame plate (8) Non-slip layer (9) Press roller ( 10) Fixed shaft (11) Arm (12) Guide roller (13) Inlet guide roller (14) Upper intermediate guide roller (15) Lower intermediate guide roller (16) Exit guide roller (17) Fixed plate (18) Slot (19) Roller (20) Spring (21) Fixed shaft (22) Arm (23) Load receiving roller (24) Press roller (25) Swing plate (26) Spring

Claims (3)

[Claims] 1. A driving device wherein a long belt-like traveling body having a width is wound around an outer peripheral surface of a driving rotator to drive and drive the traveling body by rotation of the driving rotator. A pressing roller is applied from the outer peripheral surface of the traveling body to press the traveling body against the outer peripheral surface of the driving rotator so that a frictional force is generated between the traveling body and the driving rotator, and the load applied to the traveling body is increased. A long driving device with a load added, wherein the pressing force of the pressing roller is changed according to the size of the driving roller. 2. A pressing roller is supported at the tip of an arm whose base end is supported by a fixed shaft, and the pressing roller is swingable toward the outer peripheral surface of the driving rotating body, and a traveling body is mounted on the pressing roller. 2. The driving device according to claim 1, wherein the pressing roller is oscillated toward the driving rotating body in accordance with the magnitude of the load. 3. A load supporting roller for receiving a load of the traveling body by mounting a traveling body on the tip of an arm having a base end pivotally supported on a fixed shaft, and a pressing roller at a central portion of the arm. 2. The drive according to claim 1, wherein the arm is swung by a load applied to the load receiving roller by the traveling body, and the swing presses the pressing roller against the outer peripheral surface of the driving rotating body. apparatus.