JP2007040752A - Belt driving device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure capable of preventing side deviation or local twist of a belt, and preventing drop of the belt between rollers, concerning a belt driving device provided on a vehicle traveling testing machine or the like, for supporting and driving a rotator such as a wheel. <P>SOLUTION: In this belt driving device 10 constituted by winding an endless belt 20 around a driving roller 11, a driven roller 12 and a plurality of auxiliary rollers 13, etc., a single or a plurality of endless wires 15, etc. are wound around the rollers at least on a position where wheels run on the belt in the width direction of the belt, and a wire 15 is inserted between the outer circumferential surface of the rollers 11, 12, 13 and the inner circumferential surface of the belt 20, and circumferential grooves 11a, 12a, 13a for inserting an approximate half on the section shape inner circumferential side of the wire 15 are formed on the outer circumferential surface of each roller 11, 12, 13, and a circumferential groove 21 for inserting an approximate half on the section shape outer circumferential side of the wire 15 is formed on the inner circumferential surface of the belt 20. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a belt driving device provided in a vehicle running tester or the like.

2. Description of the Related Art Conventionally, in a running test machine for a vehicle, a belt drive device that supports and runs a wheel is used to run the vehicle at the same place.
For example, a belt drive device (wheel support device) described in Patent Document 1 is wound between front and rear large-diameter rollers, a small-diameter roller rotatably arranged in parallel between the large-diameter rollers, and the front and rear large-diameter rollers. The belt is composed of a looped belt, and the upper surface positions of the outer peripheral surfaces of all these rollers are arranged on the same plane, and the belt is supported by the small-diameter roller.

  In the belt driving device, one or a plurality of wheels are caused to travel on the circulating belt. At this time, not only a force in the traveling direction but also a lateral force substantially orthogonal to the traveling direction is generated on the wheels. When the belt receives this lateral force, only the belt moves laterally with respect to the roller, or local twisting occurs in the belt.

  Therefore, as a countermeasure against the lateral displacement of the belt, for example, a technology for preventing the lateral displacement of the belt by, for example, forming the roller into a barrel shape in which a substantially central portion in the axial direction swells and making the tension distribution in the width direction of the belt uneven. In addition, there is known a technique for correcting the lateral deviation by applying a force for restoring the belt by changing the inclination of the rotation axis of the driving roller according to the occurrence of the lateral deviation.

In the technique described in Patent Document 1, in the belt drive device, at least one protrusion or groove is provided on the inner peripheral surface of the circulating belt, and all the rollers are engaged with the protrusion or groove. A groove portion or a ridge to be provided is provided to prevent a lateral deviation when the circulating belt circulates.
JP 2004-309291 A

  However, in the technique described in Patent Document 1, the grooves or protrusions are provided at both ends of the inner peripheral surface of the circulating belt. With this structure, the overall displacement of the belt with respect to the roller can be eliminated, but the displacement or twisting of the belt locally occurs at the location where the wheel is in contact with the belt. May be subject to different loads, and errors may occur in the measured values of the vehicle running test.

  Therefore, the present invention proposes a belt driving device used in a vehicle running tester and the like, which can prevent lateral deviation of the belt and local deviation.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  In other words, in claim 1, a belt driving device including an endless belt wound around a plurality of rollers, the state being interposed between an outer peripheral surface of the plurality of rollers and an inner peripheral surface of the belt. Thus, one or a plurality of endless wires are wound around the plurality of rollers, and grooves into which the wires are fitted are formed on the outer peripheral surface of each roller and the inner peripheral surface of the belt.

  According to a second aspect of the present invention, there is provided a belt driving device including a driving roller, a driven roller, and an endless belt wound around the driving roller and the driven roller, the outer peripheral surface of the driving roller and the driven roller, One or a plurality of endless wires are wound between the rollers in a state of being interposed between the rollers and a groove into which the wire is fitted is formed on the outer peripheral surface of each roller and the inner peripheral surface of the belt. Is.

  According to a third aspect of the present invention, a plurality of or a single auxiliary roller is provided between the driving roller and the driven roller so that the axial direction of the rollers is substantially parallel to the roller. A groove into which the peripheral side portion is fitted is formed.

  According to a fourth aspect of the present invention, one or a plurality of endless wires are wound around the auxiliary roller.

  According to a fifth aspect of the present invention, the belt drive device supports the wheel and causes the wheel to travel on the belt.

  According to a sixth aspect of the present invention, the wire is provided at a position where the wheel travels at least on the belt in the width direction of the belt.

  As effects of the present invention, the following effects can be obtained.

In claim 1, when a lateral force substantially perpendicular to the running direction of the belt is applied, the belt and the wire are engaged with each other, and the relative movement of the both is restricted, and the wire and the roller are restricted. And the relative movement of the two in the lateral direction is restricted, so that the belt cannot move relative to the roller in the lateral direction, and the belt can be prevented from being displaced laterally. it can. Further, when a vertical load is applied to the belt by running a rotating body such as a wheel on the belt, the belt and the wire, and the wire and the roller are more firmly engaged with each other, thereby improving the lateral displacement prevention effect. be able to. Furthermore, in order to obtain this lateral shift prevention effect, the apparatus can be simply configured without requiring complicated control.
And since a wire supports a belt, the fall of the belt between rollers can be prevented.

In claim 2, when a lateral force substantially orthogonal to the running direction of the belt is applied, the belt and the wire are engaged with each other, and the relative movement of the both is restricted, and the wire and the roller are restricted. And the relative movement of the two in the lateral direction is restricted, so that the belt cannot move relative to the roller in the lateral direction, and the belt can be prevented from being displaced laterally. it can. Further, when a vertical load is applied to the belt by running a rotating body such as a wheel on the belt, the belt and the wire, and the wire and the roller are more firmly engaged with each other, thereby improving the lateral displacement prevention effect. be able to. Furthermore, in order to obtain this lateral shift prevention effect, the apparatus can be simply configured without requiring complicated control.
And since a wire supports a belt, the fall of the belt between rollers can be prevented.

  According to the third aspect of the present invention, the belt is supported by the auxiliary roller between the driving roller and the driven roller, and the auxiliary roller is also provided with a mechanism for preventing the lateral displacement of the belt. Misalignment can be prevented.

  According to the fourth aspect, it is possible to improve the effect of preventing the belt from being displaced with respect to the roller, and it is possible to prevent the belt from falling between the auxiliary rollers by the wire.

  According to the fifth aspect of the present invention, the vehicle running test can be performed by running the vehicle wheel on the belt of the belt driving device. In this belt drive device, a mechanism for preventing the belt from being displaced with respect to the roller is provided, and errors in the running test result caused by the deviation of the belt can be eliminated, which can contribute to improving the running test accuracy. .

  According to the sixth aspect of the present invention, it is possible to prevent local misalignment or misalignment of the belt at the position where the belt wheel travels, and to eliminate an error in the travel test result caused by the misalignment of the belt. It can contribute to improvement.

Next, embodiments of the invention will be described.
1 is a diagram showing an overall configuration of a belt driving device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3 shows the belt driving device in a state where the belt is removed. FIG.
FIG. 4 is a diagram showing another embodiment of the belt driving device in a state where the belt is removed.

  The belt driving device 10 according to the embodiment of the present invention is configured to run in substantially the same place while supporting a rotating body H such as a wheel of a vehicle. The belt driving device 10 is used, for example, in a vehicle running test machine or the like, and is used to run in substantially the same place while supporting the vehicle to be tested.

  As shown in FIG. 1, the belt driving device 10 is mainly composed of a driving roller 11, a driven roller 12, and an endless belt 20 wound around the driving roller 11 and the driven roller 12. The belt 20 is a metal belt in this embodiment, but may be a rubber or resin belt.

The driving roller 11 and the driven roller 12 are supported by a pair of bearing devices (not shown) so as to be rotatable around an axis extending substantially parallel and substantially horizontally.
Further, the drive roller 11 is provided with a rotation drive means (not shown), and the belt 20 circulates around these rollers 11 and 12 when the drive roller 11 is rotationally driven.

  However, the drive roller 11 is provided with a rotation drive means and is forcibly rotated. However, the drive roller 11 is a rotation body not provided with the rotation drive means, and receives the force from the rotation of the rotation body H traveling on the belt 20, The belt 20 can also be configured to circulate between the rollers.

  Hereinafter, the direction in which the belt 20 travels is expressed as “travel direction”, and the direction substantially orthogonal to the travel direction is expressed as “lateral direction W”. According to this, the direction in which the rotating shafts of the driving roller 11 and the driven roller 12 extend is the lateral direction W.

.. Are provided between the drive roller 11 and the driven roller 12, and the belt 20 is supported by the auxiliary roller 13 between the drive roller 11 and the driven roller 12.
However, depending on other conditions such as the distance between the driving roller 11 and the driven roller 12 and the magnitude of the load applied to the belt 20 by the rotating body H, the belt driving device 10 having a configuration without the auxiliary roller 13 is used. You can also.

  The auxiliary roller 13 has a smaller diameter than the driving roller 11 and the driven roller 12, both of which are in contact with the inner periphery of the belt 20 at the upper portion thereof, and the rotation axis of the auxiliary roller 13 is the rotation of the driving roller 11 and the driven roller 12. It arrange | positions so that it may become substantially parallel to an axis | shaft.

  As shown in FIGS. 2 and 3, a single or a plurality of endless wires 15, 15... Are wound around the driving roller 11 and the driven roller 12. That is, the wires 15, 15... Are inserted between the rollers 11, 12, 13 and the belt 20. The number of wires 15 is appropriately adjusted based on the axial length of the rollers 11, 12, and 13.

  The wire 15 goes around the inner circumference of the belt 20 in contact with the belt 20 along the running direction of the belt 20, and circulates around the rollers 11, 12, and 13 as the belt 20 circulates. During this time, the wire 15 is always in contact with the inner periphery of the belt 20, and at the position where the rollers 11, 12, 13 and the belt 20 are in contact with each other, the wire 15 is placed between the inner periphery of the belt 20 and the outer periphery of the rollers 11, 12, 13. Touch both.

  On the outer peripheral surface of each of the rollers 11, 12, and 13, approximately half of the inner peripheral side portion of the cross-sectional shape of the wire 15 is inserted into the position where the wire 15 passes, and the rollers 11, 12, and 13 of the wire 15 are inserted. Outer peripheral grooves 11a, 12a, and 13a that restrict movement in the lateral direction W on the outer peripheral surface are formed. The outer circumferential grooves 11a, 12a, and 13a are provided for the wires 15, 15,... Wound around the rollers 11, 12, and 13, respectively.

  The outer peripheral grooves 11a, 12a, and 13a provided in each of the rollers 11, 12, and 13 are circumferential grooves that circulate around the outer peripheral surface of each of the rollers 11, 12, and 13 in a tangential direction. It has a cross-sectional shape in which approximately half of the cross-sectional shape can be inserted. The outer peripheral grooves 11a, 12a, 13a are provided in the outer peripheral grooves 11a provided in the driving roller 11, the outer peripheral grooves 13a, 13a,... Provided in the auxiliary rollers 13, 13,. The position of the outer peripheral groove 12a is adjusted so as to be arranged on a substantially straight line in plan view.

On the other hand, in the inner peripheral surface of the belt 20, approximately half of the outer peripheral side portion of the cross-sectional shape of the wire 15 is inserted at a position where the wire 15 passes, so that the wire 15 can be laterally moved on the inner peripheral surface of the belt 20. An inner circumferential groove 21 that restricts movement in the direction is formed. The inner circumferential groove 21 is a circumferential groove that goes around the inner circumference of the belt 20, and has a cross-sectional shape in which substantially half of the cross-sectional shape of the wire 16 can be fitted, similarly to the outer circumferential groove.
This inner peripheral groove 21 is provided for each of the wires 15, 15... Wound around the rollers 11, 12, 13.

  As described above, each of the wires 15, 15... Wound around the rollers 11, 12, 13 is fitted into the inner circumferential groove 21 provided in the belt 20, approximately half of the outer circumferential side portion of the cross-sectional shape. Similarly, substantially half of the inner peripheral side portion of the cross-sectional shape is fitted into the outer peripheral grooves 13a, 13a,.

Accordingly, since the wire 15 is inserted into the outer peripheral grooves 11a, 12a, and 13a of the rollers 11, 12, and 13 and is engaged with each other, the relative movement in the lateral direction W of both the rollers 15 is restricted, and the belt 20 is included therein. Since the wire 15 is fitted in the circumferential groove 21 and is engaged with each other, the relative movement in the lateral direction W of both is restricted. That is, the relative movement in the lateral direction W is restricted between the belt 20 and the rollers 11, 12, and 13 via the wire 15.
Thus, even when the belt 20 receives a force in the lateral direction W from the rotating body H, the belt 20 does not shift laterally with respect to the rollers 11, 12, and 13.

  The wire 15 is provided at a position where the rotating body H travels at least in the width direction of the belt 20. Therefore, the wire 15 can be provided only at a position where the rotating body H travels on the belt 20, or a plurality of wires 15 can be provided at intervals in the width direction of the belt 20.

  When the rotating body H travels on the belt 20, a vertical load is applied to the belt 20 by the rotating body H and the belt 20 is pressed toward the rollers 11, 12, and 13, and the wire 15 and the belt 20 or The degree of adhesion between the wire 15 and the rollers 11, 12, and 13 is increased, and the wire 15 is more firmly engaged.

  Therefore, even if a lateral force W is locally applied to the belt 20 by the rotating body H, the belt 20 does not move in the lateral direction W with respect to the rollers 11, 12, and 13. The occurrence of local misalignment and lateral misalignment of the belt 20 can be prevented. Thereby, the error of the running test result caused by the deviation of the belt 20 can be eliminated, and the running test accuracy can be improved.

  As described above, the belt driving device 10 does not require complicated control such as adjusting the rotation speed of the roller and the rotation shaft in order to prevent the lateral displacement of the belt 20, but the effect can be obtained with certainty. . Further, the configuration is simple, and the configuration can be made at a lower cost compared to the case where a control mechanism or the like is provided.

  The wire 15 supports the belt 20 between the driving roller 11 and the auxiliary roller 13, between the auxiliary roller 13 and the auxiliary roller 13, and between the auxiliary roller 13 and the driven roller 12. The tension of the belt 20 is maintained, and the belt 20 also serves to prevent the belt 20 from falling between the rollers.

  If only the effect of preventing the lateral displacement of the belt 20 is pursued, it is conceivable that a protrusion is provided on the inner peripheral surface of the belt 20 and a groove into which the protrusion is inserted is formed on the outer peripheral surface of the rollers 11, 12, and 13. It is difficult to obtain the effect of preventing the belt 20 from falling. On the other hand, by providing the wires 15, 15... Separately from the belt 20 and the rollers 11, 12, 13, it is possible to obtain both the effect of preventing the belt 20 from falling and the effect of preventing lateral displacement. .

  As shown in FIG. 4, the wire 15 wound around the driving roller 11, the driven roller 12, and the auxiliary rollers 13, 13, in order to further improve the effect of preventing the belt 20 from dropping and the effect of preventing the lateral displacement. In addition to 15..., A wire 16 wound around the auxiliary rollers 13, 13.

  In the example shown in FIG. 4, the wires 15 wound around all the rollers 11, 12, 13... And the wires 16 wound around the auxiliary rollers 13, 13. Also in this case, grooves for inserting the wires 16 wound around the auxiliary rollers 13, 13... Are provided on the outer peripheral surface of the auxiliary rollers 13, 13.

  As a result, many wires 15 and 16 for preventing the lateral displacement of the belt 20 are provided, particularly at the portion where the rotating body H is in contact with the traveling body, so that a higher lateral displacement effect can be obtained and the driving roller 11 and the driven roller 11 are driven. Although the belt 20 tends to fall between the rollers 12, the wires 15 and 16 that support the belt 20 are provided in a large number, so that a higher drop prevention effect can be obtained.

The figure which shows the whole structure of the belt drive device which concerns on the Example of this invention. AA arrow sectional drawing in FIG. The figure which shows the belt drive device of the state which removed the belt. The figure which shows another form of the belt drive device of the state which excluded the belt.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Belt drive device 11 Drive roller 11a Outer peripheral groove 12 Driven roller 12a Outer peripheral groove 13 Auxiliary roller 13a Outer peripheral groove 15 Wire 16 Wire 20 Belt 21 Inner peripheral groove

Claims (6)

A belt drive device comprising an endless belt wound around a plurality of rollers,
In a state of being interposed between the outer peripheral surface of the plurality of rollers and the inner peripheral surface of the belt, a single or a plurality of endless wires are wound around the plurality of rollers,
A belt driving device, wherein a groove into which a wire is fitted is formed on an outer peripheral surface of each roller and an inner peripheral surface of the belt. A belt driving device comprising a driving roller, a driven roller, and an endless belt wound around the driving roller and the driven roller,
In a state of being interposed between the outer peripheral surface of the driving roller and the driven roller and the inner peripheral surface of the belt, one or a plurality of endless wires are wound between the rollers,
A belt driving device, wherein a groove into which a wire is fitted is formed on an outer peripheral surface of each roller and an inner peripheral surface of the belt. Between the driving roller and the driven roller, a plurality or a single auxiliary roller having an axial direction substantially parallel to these rollers is provided,
On the outer peripheral surface of the auxiliary roller, a groove into which the inner peripheral side portion of the cross-sectional shape of the wire is fitted,
The belt drive device according to claim 2. One or more endless wires are wound around the auxiliary roller,
The belt drive device according to claim 3. The belt drive device supports the wheel and causes the wheel to travel on the belt.
The belt drive device according to any one of claims 1 to 4. The wire is provided at a position where the wheel travels at least on the belt in the width direction of the belt,
The belt drive device according to claim 5.

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