JP2009109279A - Endless belt type running testing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an endless belt type running testing device capable of preventing meandering of an endless belt caused by being influenced by camber thrust (lateral force) of a tire, and reproducing simply running speed in consideration of slip of the belt surface. <P>SOLUTION: In this endless type running testing device equipped with a flat-shaped endless belt 8 laid between a pair of rotating rollers, and a driving means for rotating and running the endless belt 8 at prescribed speed through rotation of the pair of rotating rollers, endless guide grooves 15 formed in the circulating state in the rotation direction on the outer circumferential surface of the rotating roller 5 are provided, and endless projecting guides 16 keeping always the engaging state with the guide grooves 15 on the rotating roller 5 are provided on the flat inner surface of the endless belt 8 protrudedly from the flat inner surface. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an endless belt type running test apparatus, and in particular, a tire or a test vehicle is fixedly mounted on an endless belt that becomes a virtual road surface that moves at a predetermined rotational speed, and simulated running is performed. The present invention relates to an endless belt type running test apparatus that reproduces the running state of a tire or a test vehicle.

  Conventionally, tests have been conducted to reproduce tire slip and hydroplaning phenomena in automobiles by reproducing the environment such as a wet road surface due to rainwater. In addition, as a method of reproducing the environment where the road surface is wet by rainwater, a road surface with a predetermined water film is created outdoors and a test is performed by actually driving a car. There is a method to install and test indoors. At present, indoor running test apparatuses that can be implemented throughout the year are mainly implemented (see, for example, Patent Document 1).

The test apparatus described in Patent Document 1 includes a pair of rotating rollers, an endless belt that is stretched between the pair of rotating rollers, and rotates through the rotation of the pair of rotating rollers. Drive means for rotating the endless belt at a predetermined speed, and a water tank containing water for passing through the lower portion of the endless belt are provided. Then, when the endless belt rotates, water is drawn up on the upper surface of the upper belt portion of the endless belt due to the viscosity of the water to form a water film, and the tire is simulated to run on the endless belt provided with this water film. ing. Further, the contact surface between the rotating roller and the endless belt is formed in a substantially flat shape.
Japanese Patent Laid-Open No. 2006-153708.

  In the test apparatus described in Patent Document 1, since the contact surface between the rotating roller and the endless belt is formed in a substantially flat shape, when a tire or a test vehicle is placed on the endless belt and the vehicle is simulated and rotated, Due to the tire's canvas last (lateral force), the endless belt tends to run while meandering.

  Further, slip is likely to occur between the rotating roller and the endless belt, and it is necessary to reproduce the actual running state in consideration of this slip, and management of the correction is troublesome.

  Therefore, an endless belt-type running test device that can prevent the endless belt from meandering under the influence of the tire's canvas last (lateral force), etc., and can easily reproduce the running speed considering the belt surface slippage. Therefore, a technical problem to be solved arises in order to provide this, and the present invention aims to solve this problem.

  The present invention has been proposed in order to achieve the above object, and the invention according to claim 1 is characterized in that a flat endless belt spanned between at least one pair of rotating rollers, and the one pair. In an endless belt type running test apparatus provided with driving means for rotating the endless belt at a predetermined speed through rotation of the rotating roller, an endless belt formed on the outer peripheral surface of the rotating roller in a rotating direction. An endless belt type running test apparatus provided with a guide groove and an endless projecting guide that always engages and holds with the guide groove of the rotating roller on the flat inner surface of the endless belt so as to protrude from the flat inner surface. provide.

  According to this configuration, the flat endless belt that rotates between the rotating roller and the tire rotates and rotates together with the rotating roller in a state where the protruding guide is always engaged with the guide groove. Even when the canvas last of the tire is received, the canvas last is absorbed by the engaging portion between the projecting guide and the guide groove, and the endless belt does not run while meandering.

  According to a second aspect of the present invention, there is provided an endless belt type traveling test apparatus according to the first aspect, wherein the guide groove and the protruding guide are provided in a plurality of rows with a predetermined interval in the axial direction.

  According to this configuration, the canvas last received by the engagement holding portion between the protruding guide and the guide groove is dispersed and absorbed for each row.

  According to a third aspect of the present invention, in the first or second aspect, the cross-sectional shape of the guide groove and the cross-sectional shape of the protruding guide are each formed in a substantially V shape, and the load on the belt is applied to each V-shaped surface. Provided is an endless belt-type running test apparatus which is adapted to receive.

  According to this configuration, the guide groove having the V-shaped cross section and the protruding guide are engaged and held, and the load on the belt is received on each V-shaped surface, so that the load on the belt can be stably received. .

  According to a fourth aspect of the present invention, there is provided an endless belt type running test apparatus according to the first, second or third aspect, wherein the endless belt is formed of a urethane resin material.

  According to this configuration, the endless belt formed of the urethane resin material has excellent cold resistance and can be used even in extremely cold regions.

  According to a fifth aspect of the present invention, in the first, second, third, or fourth aspect, the lower end of the upper head portion of the endless belt is slidably contacted with the pair of rotating rollers, and the endless belt Provided is an endless belt type traveling test apparatus provided with a table receiver made of a wear-resistant resin material extending in a traveling direction.

  According to this configuration, the load applied to the lower surface of the upper head portion of the endless belt is received by the wear-resistant table holder provided in sliding contact with the lower surface of the upper belt portion, and the endless belt is vibrated. This contributes to stable running of the endless belt.

  According to a sixth aspect of the present invention, a flat endless belt stretched between at least one pair of rotating rollers, and the endless belt is rotated at a predetermined speed through the rotation of the pair of rotating rollers. In an endless belt type running test apparatus comprising driving means for running, a speed sensor for detecting a rotational running speed of the endless belt, and driving of the driving means is controlled based on a speed detected by the speed sensor. A controller for controlling the speed of the endless belt to a predetermined speed set in advance, and an endless guide groove formed in the rotational direction on the outer peripheral surface of the rotating roller, and a flat inner surface of the endless belt An endless protruding guide that always engages and holds with the guide groove of the rotating roller is formed on the inner surface of the flat roller. Providing an endless belt running test apparatus which is provided to protrude in the direction.

  According to this configuration, the speed at which the endless belt is actually rotating is detected by the speed sensor, the drive of the driving unit is controlled based on the speed detected by the speed sensor, and the speed of the endless belt is preset. Therefore, the speed can be controlled in consideration of the slippage of the belt surface. As a result, a running test or the like can be performed at a desired actual speed.

  In addition, a flat endless belt that rotates between a rotating roller and a tire rotates with the rotating roller in a state where the protruding guide is always engaged with the guide groove. Even when the last is received, the canvas last is absorbed by the engaging portion between the protruding guide and the guide groove, and the endless belt does not run while meandering.

  According to the first aspect of the present invention, even when the canvas last of the tire is received, the canvas last can be absorbed by the engaging portion between the protruding guide and the guide groove to prevent meandering.

  According to the second aspect of the present invention, since the canvas last can be dispersed and absorbed in the engaging portions between the protruding guides and the guide grooves in each row, the canvas last can be reduced. In addition to the effect of the invention in the belt type running test apparatus, an effect that the running of the endless belt is further stabilized can be expected.

  Since the invention according to claim 3 can stably receive the load on the endless belt with the rotating roller, in addition to the effect of the invention in the endless belt type running test apparatus according to claim 1 or 2, the endless The effect that a tire, a test vehicle, etc. can be mounted reliably in a state where the running of the belt is stabilized can be expected.

  Since the invention according to claim 4 can be used even in extremely cold regions, in addition to the effects of the invention in the endless belt type running test apparatus according to claim 1, 2, or 3, the range of use environment can be expanded. The effect can be expected.

  According to the fifth aspect of the present invention, since the load applied to the upper surface of the endless belt is received by the table receiver via the endless belt, the invention in the endless belt type running test apparatus according to the first, second, third or fourth aspect In addition to the above effect, it is possible to reliably mount a vehicle or the like, and to suppress the vibration of the endless belt and stabilize the rotational travel of the endless belt.

  According to the sixth aspect of the present invention, it is possible to reliably reproduce the traveling state in consideration of the slippage of the belt surface generated between the endless belt and the rotating roller. Further, even if the canvas last of the tire is received, the canvas last can be absorbed by the engaging portion between the projecting guide and the guide groove to prevent meandering.

  Providing an endless belt-type running test device that prevents the endless belt from meandering under the influence of the tire canvas last (lateral force), etc., and that can easily reproduce the running speed considering slippage of the belt surface In order to achieve the purpose of the above, a flat endless belt stretched between at least one pair of rotating rollers, and the endless belt is rotated at a predetermined speed through the rotation of the pair of rotating rollers. In an endless belt type running test apparatus provided with a driving means for running, an endless guide groove formed in the rotation direction is provided on the outer peripheral surface of the rotating roller, and the flat inner surface of the endless belt is provided with the rotating roller. An endless protruding guide that always engages and holds the guide groove is provided so as to protrude from the flat inner surface. It was realized by.

  Hereinafter, the endless belt type running test apparatus of the present invention will be described with reference to preferred embodiments.

  FIG. 1 is an overall configuration layout diagram showing a schematic configuration of an endless belt type running test apparatus according to an embodiment of the present invention, and FIG. 2 is a top view of a main part of the running test apparatus. 1 and 2, the running test apparatus 1 includes a gantry 2, driving rollers 3, 3, driven rollers 4, 4, support rollers 5, 5,..., Belt rotating idle rollers 6, 6,. .., A pair of endless belts 8, a plurality of table receivers 9, 9, a driving means 10, a controller 11, and the like. Moreover, this driving | running | working test apparatus 1 is installed in the wind tunnel which reproduces airflow, for example.

  As shown in FIG. 1, the gantry 2 includes driving rollers 3, 3, driven rollers 4, 4, a plurality of support rollers 5, 5,..., Belt rotating idle rollers 6, 6, and a plurality of vibration preventing idle rollers. 7 and 7 are attached to left and right side walls 2a, 2a opposite to each other of the gantry 2 in a rotatable manner. Further, table receivers 9, 9... Are fixedly attached to the left and right side walls 2a, 2a.

  Note that the upper surface of the gantry 2 exposes only the endless belts 8 and 8, and other members are covered with a transparent cover 19. In FIG. 1, the lower half of the cover 19 is removed and the inside of the gantry 2 is visible.

  The pair of endless belts 8, 8 are provided side by side in the left-right direction. Each of the endless belts 8 and 8 is disposed between the driving roller 3 disposed on the rear end side, the driven roller (tension roller) 4 disposed on the front end side, and the driving roller 3 and the driven roller 4. The support rollers 5, 5, the rotating idler roller 6, and the table receivers 9, 9... Are juxtaposed on the inner side (lower side) of the upper belt portion 8 a, and a plurality of vibration-preventing idle rollers 7, 7. The driving roller 3 and the driven roller are arranged side by side on the outer side (lower side) of the lower belt portion 8b and are extended in the front-rear direction by the rollers 3 to 7 and the table receivers 9, 9,. It is bridged between four.

  The support rollers 5 and 5 are for supporting the tires 13 of the vehicle 12 placed on the endless belts 8 and 8, and the distance in the front-rear direction is the size of the wheel base of the test vehicle 12. It can be adjusted to match. The table receivers 9 and 9 support the upper belt portion 8a of the endless belts 8 and 8 from the inner lower surface.

  In this embodiment, endless guide grooves 15, 15... Are provided around the outer peripheral surfaces of the drive roller 3, the driven roller 4, the support roller 5, and the belt rotation idle roller 6 so as to circulate in the rotation direction. Yes. In the present embodiment, the shapes and structures of the outer peripheral surfaces of the drive roller 3, the driven roller 4, the support roller 5, and the belt rotating idle roller 6 are the same in basic structure except for the outer diameter. Therefore, the basic structure of the rotating rollers 3 to 6 will be described on behalf of the support roller 5.

  FIG. 3 is an enlarged view showing the shape of the outer peripheral surface of the support roller 5 and the cross-sectional shape of the endless belt 8 together with the tire 13 of the test vehicle 12. In FIG. 3, the supporting roller 5 is formed with tapered outer peripheral surfaces at both ends in a tapered shape, and provided with inclined surfaces 14 and 14 for automatic alignment at both ends. In addition, a plurality of endless guide grooves 15, 15... (7 in the present embodiment) are provided between the inclined surfaces 14 and 14 with a predetermined interval in the axial direction. As shown in FIG. 3, each guide groove 15, 15... Has a substantially V-shaped cross section.

  On the other hand, each of the endless belts 8, 8 spanned between the rollers 3 to 6 is made of urethane resin having excellent cold resistance, and is formed into a flat belt in an endless shape. Further, the inner peripheral surfaces of the endless belts 8 and 8 have an endless shape corresponding to the guide grooves 15, 15... Of the rollers 3 to 6 and are held in mesh with the guide grooves 15, 15. A plurality of protruding guides 16, 16,... Are integrally provided.

  As shown in FIG. 3, the projecting guides 16, 16,... Of the endless belts 8, 8 are formed in an inverted V-shaped cross section so as to always contact and engage with the V-shaped surfaces of the guide grooves 15, 15. Has been. Accordingly, even when the endless belts 8 and 8 are subjected to the canvas last of the tire 13 with respect to the rollers 3 to 6 due to this engagement, the endless belts 8 and 8 are absorbed by the engaging portions, and the endless belts 8 and 8 meander in the lateral direction. Movement is regulated.

  The table receiver 9 is made of high-density polyethylene having wear resistance and is formed in a substantially plate shape. The table receiver 9 is in slidable contact over substantially the entire inner side (lower side) of the upper belt portion 8a of the endless belts 8 and 8. It is arranged in a state. The table receiver 9 receives a load applied to the upper belt portion 8a of the endless belts 8 and 8 from the lower side of the endless belts 8 and 8, and suppresses the vibration of the endless belts 8 and 8 to stabilize the traveling track. Has the function of

  The controller 11 controls the entire running test apparatus 1 and is mainly composed of a microcomputer. FIG. 4 is a schematic configuration diagram showing an example of a control system in which the controller 11 controls the traveling speed of the endless belts 8 and 8.

  In FIG. 4, the controller 11 includes a non-contact speed sensor 17 that outputs a signal corresponding to the rotational traveling speed of the endless belts 8, 8, and the endless belts 8, 8 based on signals from the speed sensor 17. A speedometer 18 that calculates the speed and outputs it to the controller 11 is connected. Further, a driving means 10 including a motor for rotating the driving roller 3 and a speed pattern setting device 20 for inputting a speed pattern signal to the controller 11 are connected. The speed pattern setter 20 is for the operator to set the speed at which the endless belts 8 and 8 are rotated, and outputs a signal corresponding to the speed set by the operator to the controller 11.

  Next, an example in which the traveling test apparatus 1 configured as described above performs a traveling test of the test vehicle 12 will be described with reference to FIGS. First, prior to the running test, the vehicle 12 is placed on the endless belts 8 and 8 such that the left and right tires 13, 13, 13, and 13 of the vehicle 12 correspond to the support rollers 5, 5, 5, and 5, respectively. . Here, the tires 13, 13, 13, 13 can freely rotate, but the vehicle body is secured so as not to move in the front-rear direction. Further, the traveling speed of the vehicle 12 is set by the speed pattern setting unit 14. Thereafter, the running test is started.

  When the test is started, the controller 11 compares the signal from the speedometer 18 that depends on the rotational travel speed of the endless belts 8 and 8 with the signal from the speed pattern setter 20, and the signal from the speedometer 18 is The operation of the drive means 10 that drives the drive roller 3 is servo-controlled so that it substantially coincides with the signal from the speed pattern setter 20. Thereby, the tires 13, 13, 13, 13 of the vehicle 12 rotate at a predetermined speed together with the endless belts 8, 8, and start the simulated running. In this simulated traveling, even if slippage or the like occurs between the driving roller 3 and the endless belt 8, the driving means 10 is based on the actual rotational traveling speed of the endless belts 8 and 8 detected by the speed sensor 17. By performing servo control, a simulated running test at a desired speed can be performed.

  It should be noted that the present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

  For example, in the above embodiment, a water film or the like can be formed on the endless belts 8 and 8 and used as a road surface water film reproduction test apparatus.

1 is a schematic overall configuration layout diagram of an endless belt type running test apparatus according to an embodiment of the present invention. The principal part top view of a traveling test apparatus same as the above. The enlarged view which shows the shape of the outer peripheral surface in the support roller of a running test apparatus same as the above, and the cross-sectional shape in an endless belt with the tire of a test vehicle. The schematic block diagram which shows an example of the control system which controls the traveling speed of an endless belt by the controller of a traveling test apparatus same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Running test device 2 Base 2a Side wall 3 Drive roller (rotating roller)
4 Followed roller (rotating roller)
5 Support roller (rotating roller)
6 Belt Rotating Id Roller (Rotating Roller)
7 Vibration prevention idle roller (rotating roller)
8 Endless belt 8a Upper belt portion 8b Lower belt portion 9 Table receiver 10 Driving means 11 Controller 12 Vehicle 13 Tire 14 Inclined surface 15 Guide groove 16 Projection guide 17 Speed sensor 18 Speedometer 20 Speed pattern setting device

Claims (6)

An endless comprising: a flat endless belt spanned between at least one pair of rotating rollers; and driving means for rotating the endless belt at a predetermined speed through rotation of the pair of rotating rollers. In the belt-type running test device,
An endless guide groove formed in the rotation direction is provided on the outer peripheral surface of the rotating roller, and an endless protruding guide that is always engaged and held with the guide groove of the rotating roller is provided on the flat inner surface of the endless belt. An endless belt type running test apparatus characterized in that it protrudes from the flat inner surface.   The endless belt type running test apparatus according to claim 1, wherein the guide grooves and the protruding guides are provided in a plurality of rows with a predetermined interval in the axial direction.   The cross-sectional shape of the guide groove and the cross-sectional shape of the protruding guide are each formed in a substantially V shape, and the load on the belt is received by each V-shaped surface. Endless belt type running test equipment.   4. The endless belt type running test apparatus according to claim 1, wherein the endless belt is made of a urethane resin material.   A table holder made of a wear-resistant resin material is provided between the pair of rotating rollers so as to be in sliding contact with the lower surface of the upper head portion of the endless belt and extending in the running direction of the endless belt. The endless belt type running test apparatus according to claim 1, 2, 3, or 4. An endless comprising: a flat endless belt spanned between at least one pair of rotating rollers; and driving means for rotating the endless belt at a predetermined speed through rotation of the pair of rotating rollers. In the belt-type running test device,
A speed sensor for detecting the rotational travel speed of the endless belt; and a controller for controlling the drive of the driving means based on the speed detected by the speed sensor to control the speed of the endless belt to a predetermined speed set in advance. With
In addition, an endless guide groove formed in the rotation direction on the outer peripheral surface of the rotating roller is provided, and an endless protrusion that always engages and holds the guide groove of the rotating roller on the flat inner surface of the endless belt. An endless belt type running test apparatus, characterized in that a guide is provided so as to protrude inward from the flat inner surface.

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