JP2012242152A - Method for measuring braking force - Google Patents

Method for measuring braking force Download PDF

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JP2012242152A
JP2012242152A JP2011110207A JP2011110207A JP2012242152A JP 2012242152 A JP2012242152 A JP 2012242152A JP 2011110207 A JP2011110207 A JP 2011110207A JP 2011110207 A JP2011110207 A JP 2011110207A JP 2012242152 A JP2012242152 A JP 2012242152A
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roller
wheel
front wheel
measuring
rear wheel
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Kenichiro Kurai
賢一郎 倉井
Shinji Komehana
慎二 米花
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Honda Motor Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a method for measuring a braking force, the method allowing a test to be carried out even when a friction coefficient of a tire surface is smaller than usual.SOLUTION: As is shown in FIG. (a), a front cylinder 17 is pulled forward to move a front wheel measuring roller 23 near to a rear wheel measuring roller 33 by approximately 40 mm. As FIG. (b) shows, the distance between the front wheel measuring roller 23 and the rear wheel measuring roller 33 is reduced, so that a front wheel 11 runs on to a front wheel front-side roller 21. In FIG. (c), a driving source 27 rotates the front wheel measuring wheel 23 in such a direction as to drive a vehicle forward. In FIG. (d), a braking operation of the vehicle is performed to stop the front wheel 11 from rotating. Accordingly, the front wheel 11 brakes the front roller front-side roller 21, which brakes the front wheel measuring roller 23. A load caused by the braking is detected by a load detector 26. As described above, a frictional force between the front wheel 11 and the front wheel front-side roller 21 is increased because the front wheel 11 runs on to the front wheel front-side roller 21. As a result, a test can be carried out with the tire wetted.

Description

本発明は、ブレーキの制動性能を前輪と後輪の各々について測定する制動力測定方法に関する。   The present invention relates to a braking force measuring method for measuring braking performance of a brake for each of a front wheel and a rear wheel.

台上試験機を用いて実施するブレーキの性能試験方法が知られている（例えば、特許文献１（図１）参照。）。   A brake performance test method performed using a bench test machine is known (see, for example, Patent Document 1 (FIG. 1)).

特許文献１を次図に基づいて説明する。なお、前後左右は運転席を基準に定める。
図８は従来の台上試験機の平面図であり、台上試験機１００は、車両の左前輪１０１を支持する一対の左前輪測定ローラ１０２と、この左前輪測定ローラ１０２に作用する負荷を検出する負荷検出器１０３と、左前輪測定ローラ１０２を非回転状態にする制動部１０４と、左前輪測定ローラ１０２を回す駆動源１０５とを備え、車両の右前輪１０６を支持する一対の右前輪測定ローラ１０７と、この右前輪測定ローラ１０７に作用する負荷を検出する負荷検出器１０８と、右前輪測定ローラ１０７を非回転状態にする制動部１０９と、右前輪測定ローラ１０７を回す駆動源１１０とを備え、車両の左後輪１１１を支持する一対の左後輪測定ローラ１１２と、この左後輪測定ローラ１１２に作用する負荷を検出する負荷検出器１１３と、左後輪測定ローラ１１２を非回転状態にする制動部１１４と、左後輪測定ローラ１１２を回す駆動源１１５とを備え、車両の右後輪１１６を支持する一対の右後輪測定ローラ１１７と、この右後輪測定ローラ１１７に作用する負荷を検出する負荷検出器１１８と、右後輪測定ローラ１１７を非回転状態にする制動部１１９と、右後輪測定ローラ１１７を回す駆動源１２０とを備える。 Patent document 1 is demonstrated based on the following figure. The front, rear, left and right are determined based on the driver's seat.
FIG. 8 is a plan view of a conventional bench test machine. The bench test machine 100 includes a pair of left front wheel measurement rollers 102 that support a left front wheel 101 of a vehicle and a load acting on the left front wheel measurement roller 102. A pair of right front wheels that support a right front wheel 106 of the vehicle, including a load detector 103 that detects, a braking unit 104 that puts the left front wheel measurement roller 102 into a non-rotating state, and a drive source 105 that rotates the left front wheel measurement roller 102. The measuring roller 107, a load detector 108 for detecting a load acting on the right front wheel measuring roller 107, a braking unit 109 for making the right front wheel measuring roller 107 non-rotating, and a drive source 110 for rotating the right front wheel measuring roller 107 A pair of left rear wheel measurement rollers 112 that support the left rear wheel 111 of the vehicle, a load detector 113 that detects a load acting on the left rear wheel measurement roller 112, and a left rear wheel A brake unit 114 that puts the constant roller 112 in a non-rotating state, a drive source 115 that rotates the left rear wheel measurement roller 112, and a pair of right rear wheel measurement rollers 117 that support the right rear wheel 116 of the vehicle, A load detector 118 that detects a load acting on the rear wheel measurement roller 117, a braking unit 119 that makes the right rear wheel measurement roller 117 non-rotating, and a drive source 120 that rotates the right rear wheel measurement roller 117 are provided.

左右一対の前輪１０１、１０６及び左右一対の後輪１１１、１１６を、各車輪毎に前記一対の測定ローラ１０２、１０７、１１２、１１７に跨るように支持させ、測定ローラ１０２、１０７、１１２、１１７を回転させ、次に車両のブレーキ操作を行い、測定ローラ１０２、１０７、１１２、１１７に作用する負荷を負荷検出器１０３、１０８、１１３、１１８で検出し、検出した負荷に基づいて、ブレーキの制動性能を測定する。   A pair of left and right front wheels 101, 106 and a pair of left and right rear wheels 111, 116 are supported across the pair of measurement rollers 102, 107, 112, 117 for each wheel, and the measurement rollers 102, 107, 112, 117 are supported. Then, the vehicle brake operation is performed, and the load acting on the measurement rollers 102, 107, 112, 117 is detected by the load detectors 103, 108, 113, 118. Based on the detected load, the brake is Measure braking performance.

図９は試験条件と得られる制動力との関係を示すグラフであり、通常の乾燥（ドライ）状態では、制動力は合格値を超えている。一方、気温が低い場合やタイヤ製造時に塗布される離型剤がタイヤ表面に残留している場合、測定ローラとタイヤの間の摩擦係数が著しく下がっているため、得られる制動力が合格値未満となる。   FIG. 9 is a graph showing the relationship between the test conditions and the obtained braking force. In a normal dry state, the braking force exceeds the acceptable value. On the other hand, when the temperature is low or the release agent applied at the time of tire production remains on the tire surface, the coefficient of friction between the measuring roller and the tire is significantly reduced, so the resulting braking force is less than the acceptable value. It becomes.

対策として、測定ローラに溝を付けて摩擦係数を増すという解決策がある。しかし、溝を設けるとその他の試験項目、例えば高速走行試験に支障がでる。
したがって、タイヤ表面の摩擦係数が通常より小さいときでも試験が可能な制動力測定方法が望まれる。 As a countermeasure, there is a solution to increase the coefficient of friction by adding a groove to the measuring roller. However, when the groove is provided, other test items such as a high-speed running test are hindered.
Therefore, a braking force measuring method that can be tested even when the friction coefficient of the tire surface is smaller than normal is desired.

特開２００５−１２１４１９公報JP 2005-121419 A

本発明は、タイヤ表面の摩擦係数が通常より小さいときでも試験が可能な制動力測定方法を提供することを課題とする。   It is an object of the present invention to provide a braking force measuring method that can be tested even when the friction coefficient of the tire surface is smaller than usual.

請求項１に係る発明は、車両の左右一対の前輪及び左右一対の後輪を、各車輪毎に前記一対の測定ローラに跨るように支持させ、前記測定ローラを回転させ、次に車両のブレーキ操作を行い、前記測定ローラに作用する負荷に基づいて、前進走行状態におけるブレーキの制動性能を前記前輪と前記後輪の各々について測定する制動力測定方法において、
前記前輪を前輪前側ローラと前輪後側ローラからなる一対の前輪測定ローラに跨るように支持させ、前記後輪を後輪前側ローラと後輪後側ローラからなる一対の後輪測定ローラに跨るように支持させる第１の工程と、
前記前輪を測定対象とするときには、前記後輪測定ローラを前記前輪測定ローラに接近させることで、前記前輪が前記前輪前側ローラに載り上がるようにし、
前記後輪を測定対象とするときには、前記前輪測定ローラを前記後輪測定ローラから離間させることで、前記後輪が前記後輪前側ローラに載り上がるようにする第２の工程と、
前記前輪測定時には、前記前輪測定ローラを車両が前進する方向へ回転させ、
前記後輪測定時には、前記後輪測定ローラを車両が前進する方向へ回転させる第３の工程と、
前記車両のブレーキ操作を行い、前輪測定時には前記前輪測定ローラに作用する負荷を測定し、後輪測定時には前記後輪測定ローラに作用する負荷を測定する第４の工程とからなることを特徴とする。 According to the first aspect of the present invention, a pair of left and right front wheels and a pair of left and right rear wheels of a vehicle are supported so as to straddle the pair of measurement rollers for each wheel, the measurement roller is rotated, and then the vehicle brake In the braking force measurement method for performing the operation and measuring the braking performance of the brake in the forward traveling state for each of the front wheel and the rear wheel based on the load acting on the measurement roller,
The front wheel is supported so as to straddle a pair of front wheel measuring rollers including a front wheel front roller and a front wheel rear roller, and the rear wheel is straddling a pair of rear wheel measuring rollers including a rear wheel front roller and a rear wheel rear roller. A first step to be supported by
When the front wheel is to be measured, the front wheel is placed on the front wheel front roller by bringing the rear wheel measuring roller closer to the front wheel measuring roller,
When the rear wheel is to be measured, a second step of allowing the rear wheel to be placed on the rear wheel front roller by separating the front wheel measuring roller from the rear wheel measuring roller;
During the front wheel measurement, the front wheel measurement roller is rotated in the direction in which the vehicle moves forward,
A third step of rotating the rear wheel measuring roller in a direction in which the vehicle moves forward during the measurement of the rear wheel;
And a fourth step of measuring the load acting on the front wheel measuring roller when measuring the front wheel and measuring the load acting on the rear wheel measuring roller when measuring the rear wheel. To do.

請求項２に係る発明は、車両の左右一対の前輪及び左右一対の後輪を、各車輪毎に前記一対の測定ローラに跨るように支持させ、前記測定ローラを回転させ、次に車両のブレーキ操作を行い、前記測定ローラに作用する負荷に基づいて、後進走行状態におけるブレーキの制動性能を前記前輪と前記後輪の各々について測定する制動力測定方法において、
前記前輪を前輪前側ローラと前輪後側ローラからなる一対の前輪測定ローラに跨るように支持させ、前記後輪を後輪前側ローラと後輪後側ローラからなる一対の後輪測定ローラに跨るように支持させる第１の工程と、
前記前輪を測定対象とするときには、前記後輪測定ローラを前記前輪測定ローラから離間させることで、前記前輪が前記前輪後側ローラに載り上がるようにし、
前記後輪を測定対象とするときには、前記前輪測定ローラを前記後輪測定ローラへ接近させることで、前記後輪が前記後輪後側ローラに載り上がるようにする第２の工程と、
前記前輪測定時には、前記前輪測定ローラを車両が後進する方向へ回転させ、
前記後輪測定時には、前記後輪測定ローラを車両が後進する方向へ回転させる第３の工程と、
前記車両のブレーキ操作を行い、前輪測定時には前記前輪測定ローラに作用する負荷を測定し、後輪測定時には前記後輪測定ローラに作用する負荷を測定する第４の工程とからなることを特徴とする。 According to a second aspect of the present invention, a pair of left and right front wheels and a pair of left and right rear wheels of a vehicle are supported so as to straddle the pair of measurement rollers for each wheel, the measurement rollers are rotated, and then a vehicle brake In the braking force measurement method for performing the operation and measuring the braking performance of the brake in the reverse traveling state for each of the front wheel and the rear wheel based on the load acting on the measurement roller,
The front wheel is supported so as to straddle a pair of front wheel measuring rollers including a front wheel front roller and a front wheel rear roller, and the rear wheel is straddling a pair of rear wheel measuring rollers including a rear wheel front roller and a rear wheel rear roller. A first step to be supported by
When the front wheel is to be measured, the front wheel is placed on the front wheel rear roller by separating the rear wheel measurement roller from the front wheel measurement roller,
When the rear wheel is to be measured, a second step of causing the rear wheel to be placed on the rear wheel rear roller by bringing the front wheel measuring roller closer to the rear wheel measuring roller;
At the time of measuring the front wheel, the front wheel measuring roller is rotated in a direction in which the vehicle moves backward,
A third step of rotating the rear wheel measuring roller in a direction in which the vehicle moves backward when the rear wheel is measured;
And a fourth step of measuring the load acting on the front wheel measuring roller when measuring the front wheel and measuring the load acting on the rear wheel measuring roller when measuring the rear wheel. To do.

請求項１に係る発明は、車両が前進するときの測定方法であり、第２の工程で、前輪が前輪前側ローラに載り上がる、又は後輪が後輪前側ロールに乗り上げるようにした。この状態で制動力測定試験を行うと、制動時に前輪が前輪前側ローラに強く当たり摩擦力が増大する、又は後輪が後輪前側ローラに強く当たり摩擦力が増大する。
結果、タイヤ表面の摩擦係数が通常より小さいときでも試験が可能な制動力測定方法が提供される。 The invention according to claim 1 is a measurement method when the vehicle moves forward, and in the second step, the front wheel rides on the front wheel front roller or the rear wheel rides on the rear wheel front roll. When the braking force measurement test is performed in this state, the front wheel strongly hits the front wheel front roller during braking and the friction force increases, or the rear wheel hits the rear wheel front roller and the friction force increases.
As a result, a braking force measuring method is provided that can be tested even when the coefficient of friction of the tire surface is smaller than usual.

請求項２に係る発明は、車両が後進するときの測定方法であり、第２の工程で、前輪が前輪後側ローラに載り上がる、又は後輪が後輪後側ロールに乗り上げるようにした。この状態で制動力測定試験を行うと、制動時に前輪が前輪後側ローラに強く当たり摩擦力が増大する、又は後輪が後輪後側ローラに強く当たり摩擦力が増大する。
結果、タイヤ表面の摩擦係数が通常より小さいときでも試験が可能な制動力測定方法が提供される。 The invention according to claim 2 is a measurement method when the vehicle moves backward, and in the second step, the front wheel rides on the front wheel rear roller or the rear wheel rides on the rear wheel rear roll. When a braking force measurement test is performed in this state, the front wheel strongly hits the front wheel rear roller during braking and the friction force increases, or the rear wheel hits the rear wheel rear roller and the friction force increases.
As a result, a braking force measuring method is provided that can be tested even when the coefficient of friction of the tire surface is smaller than usual.

本発明に係る制動力測定装置の平面図である。It is a top view of the braking force measuring device concerning the present invention. 本発明に係る制動力測定装置の左側面図である。It is a left view of the braking force measuring device concerning the present invention. 前進走行状態での前輪に係る制動力を測定する方法を説明する図である。It is a figure explaining the method to measure the braking force which concerns on the front wheel in a forward drive state. モーメント線図である。It is a moment diagram. 前進走行状態での後輪に係る制動力を測定する方法を説明する図である。It is a figure explaining the method to measure the braking force which concerns on the rear wheel in a forward drive state. 後進走行状態での前輪に係る制動力を測定する方法を説明する図である。It is a figure explaining the method to measure the braking force which concerns on the front wheel in a reverse drive state. 後進走行状態での後輪に係る制動力を測定する方法を説明する図である。It is a figure explaining the method to measure the braking force which concerns on the rear wheel in a reverse drive state. 従来の台上試験機の平面図である。It is a top view of the conventional bench testing machine. 従来の問題点を示すグラフである。It is a graph which shows the conventional problem.

本発明の実施の形態を添付図に基づいて以下に説明する。なお、図面は符号の向きに見るものとする。   Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.

本発明の実施例を図面に基づいて説明する。
図１に示すように、制動力測定装置１０は、左前輪１１Ｌ（Ｌは左を示す添え字。）の周りに配置される左前輪用機構１２Ｌと、右前輪１１Ｒ（Ｌは左を示す添え字。）の周りに配置される右前輪用機構１２Ｒと、左後輪１３Ｌの周りに配置される左後輪用機構１４Ｌと、右後輪１３Ｒの周りに配置される右後輪用機構１４Ｒと、車両前後方向へ延びるように敷設されるレール１５、１５と、これらのレール１５、１５に移動自在に載せられ左前輪用機構１２Ｌ及び右前輪用機構１２Ｒを載置する前方移動台１６と、この前方移動台１６を移動させる前方シリンダ１７と、レール１５、１５に移動自在に載せられ左後輪用機構１４Ｌ及び右後輪用機構１４Ｒを載置する後方移動台１８と、この後方移動台１８を移動させる後方シリンダ１９とを備える。 Embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the braking force measuring apparatus 10 includes a left front wheel mechanism 12L disposed around a left front wheel 11L (L is a suffix indicating left) and a right front wheel 11R (L is a suffix indicating left). ) Around the right rear wheel 13R, a left rear wheel mechanism 14L around the left rear wheel 13L, and a right rear wheel mechanism 14R around the right rear wheel 13R. And rails 15 and 15 laid so as to extend in the vehicle front-rear direction, and a front moving table 16 on which the left front wheel mechanism 12L and the right front wheel mechanism 12R are mounted movably on the rails 15 and 15; The front cylinder 17 for moving the front moving table 16, the rear moving table 18 on which the left rear wheel mechanism 14L and the right rear wheel mechanism 14R are mounted movably on the rails 15 and 15, and the rear movement A rear cylinder 19 for moving the base 18; Provided.

左前輪用機構１２Ｌは、左前輪１１Ｌの前後に配置され左前輪１１Ｌを支える前輪前側ローラ２１Ｌと前輪後側ローラ２２Ｌとからなる前輪測定ローラ２３Ｌと、前輪前側ローラ２１Ｌと前輪後側ローラ２２Ｌとを連結するチェーン・スプロケットなどの連結部材２４と、前輪後側ローラ２２Ｌの軸に連結され前輪測定ローラ２３Ｌを制動させる制動部２５Ｌと、軸に加わる負荷トルクを検出する負荷検出器２６Ｌと、軸を回転させる駆動源２７Ｌとからなる。   The left front wheel mechanism 12L includes a front wheel measurement roller 23L including a front wheel front roller 21L and a front wheel rear roller 22L, which are arranged in front of and behind the left front wheel 11L and support the left front wheel 11L, a front wheel front roller 21L, and a front wheel rear roller 22L. A connecting member 24 such as a chain / sprocket, a braking unit 25L connected to the shaft of the front wheel rear roller 22L for braking the front wheel measuring roller 23L, a load detector 26L for detecting a load torque applied to the shaft, and a shaft And a drive source 27L for rotating the motor.

同様に、右前輪用機構１２Ｒは、右前輪１１Ｒの前後に配置され右前輪１１Ｒを支える前輪前側ローラ２１Ｒと前輪後側ローラ２２Ｒとからなる前輪測定ローラ２３Ｒと、前輪前側ローラ２１Ｒと前輪後側ローラ２２Ｒとを連結する連結部材２４と、前輪後側ローラ２Ｒの軸に連結され前輪測定ローラ２３Ｒを制動させる制動部２５Ｒと、軸に加わる負荷トルクを検出する負荷検出器２６Ｒと、軸を回転させる駆動源２７Ｒとからなる。   Similarly, the right front wheel mechanism 12R includes a front wheel measuring roller 23R including a front wheel front roller 21R and a front wheel rear roller 22R, which are arranged in front of and behind the right front wheel 11R and support the right front wheel 11R, and the front wheel front roller 21R and the front wheel rear side. A connecting member 24 that connects the roller 22R, a braking unit 25R that is connected to the shaft of the front wheel rear roller 2R and brakes the front wheel measuring roller 23R, a load detector 26R that detects a load torque applied to the shaft, and a shaft that rotates Drive source 27R to be driven.

同様に、左後輪用機構１４Ｌは、左後輪１３Ｌの前後に配置され左後輪１３Ｌを支える後輪前側ローラ３１Ｌと後輪後側ローラ３２Ｌとからなる後輪測定ローラ３３Ｌと、後輪前側ローラ３１Ｌと後輪後側ローラ３２Ｌとを連結する連結部材２４と、後輪後側ローラ３２Ｌの軸に連結され後輪測定ローラ３３Ｌを制動させる制動部３５Ｌと、軸に加わる負荷トルクを検出する負荷検出器３６Ｌと、軸を回転させる駆動源３７Ｌとからなる。   Similarly, the left rear wheel mechanism 14L includes a rear wheel measuring roller 33L including a rear wheel front roller 31L and a rear wheel rear roller 32L that are disposed in front of and behind the left rear wheel 13L and support the left rear wheel 13L, and a rear wheel. A connecting member 24 that connects the front roller 31L and the rear wheel rear roller 32L, a brake unit 35L that is connected to the shaft of the rear wheel rear roller 32L and brakes the rear wheel measuring roller 33L, and detects load torque applied to the shaft And a load source 36L for rotating the shaft.

同様に、右後輪用機構１４Ｒは、右後輪１３Ｒの前後に配置され右後輪１３Ｒを支える後輪前側ローラ３１Ｒと後輪後側ローラ３２Ｒとからなる後輪測定ローラ３３Ｒと、後輪前側ローラ３１Ｒと後輪後側ローラ３２Ｒとを連結する連結部材２４と、後輪後側ローラ３２Ｒの軸に連結され後輪測定ローラ３３Ｒを制動させる制動部３５Ｒと、軸に加わる負荷トルクを検出する負荷検出器３６Ｒと、軸を回転させる駆動源３７Ｒとからなる。   Similarly, the right rear wheel mechanism 14R includes a rear wheel measuring roller 33R including a rear wheel front roller 31R and a rear wheel rear roller 32R which are disposed in front of and behind the right rear wheel 13R and support the right rear wheel 13R, and a rear wheel. A connecting member 24 that connects the front roller 31R and the rear wheel rear roller 32R, a brake unit 35R that is connected to the shaft of the rear wheel rear roller 32R and brakes the rear wheel measuring roller 33R, and detects load torque applied to the shaft And a drive source 37R for rotating the shaft.

負荷検出器２６Ｌ、２６Ｒ、３６Ｌ、３６Ｒの情報は、制動力演算部４１に集められ、そこで制動力に換算される。
それ以外の機器は、制御部４２により制御される。
図から明らかなように、４つの車輪１１Ｌ、１１Ｒ、１３Ｌ、１３Ｒの各々に係る制動力を測定することができる。 Information on the load detectors 26L, 26R, 36L, and 36R is collected in the braking force calculation unit 41, where it is converted into a braking force.
Other devices are controlled by the control unit 42.
As is apparent from the figure, the braking force relating to each of the four wheels 11L, 11R, 13L, 13R can be measured.

図２は制動力測定装置１０の左側面図であり、車両４３の左前輪１１Ｌ（以下、単に前輪１１と記す。）は、左前輪前側ローラ２１Ｌ（以下、単に前輪前側ローラ２１と記す。）と左前輪後側ローラ２２Ｌ（以下、単に前輪後側ローラ２２と記す。）からなる一対の左前輪測定ローラ２３Ｌ（以下、単に前輪測定ローラ２３と記す。）に跨るように支持される。   FIG. 2 is a left side view of the braking force measuring apparatus 10. The left front wheel 11L of the vehicle 43 (hereinafter simply referred to as the front wheel 11) is the left front wheel front roller 21L (hereinafter simply referred to as the front wheel front roller 21). And a left front wheel rear roller 22L (hereinafter simply referred to as a front wheel rear roller 22) and a pair of left front wheel measurement rollers 23L (hereinafter simply referred to as front wheel measurement rollers 23).

同様に、車両４３の左後輪１３Ｌ（以下、単に後輪１３と記す。）は、左後輪前側ローラ３１Ｌ（以下、単に後輪前側ローラ３１と記す。）と左後輪後側ローラ３２Ｌ（以下、単に後輪後側ローラ３２と記す。）からなる一対の左後輪測定ローラ３３Ｌ（以下、単に後輪測定ローラ３３と記す。）に跨るように支持される。   Similarly, the left rear wheel 13L (hereinafter simply referred to as the rear wheel 13) of the vehicle 43 includes a left rear wheel front roller 31L (hereinafter simply referred to as the rear wheel front roller 31) and a left rear wheel rear roller 32L. It is supported so as to straddle a pair of left rear wheel measurement rollers 33L (hereinafter simply referred to as rear wheel measurement rollers 33) composed of (hereinafter simply referred to as rear wheel rear roller 32).

前方移動台１６は前方シリンダ１７により移動され、後方移動台１８は後方シリンダ１９により移動されるが、前方移動台１６と後方移動台１８は、一方のみが移動し、他方は静止しているように、移動が制御される。   The front moving table 16 is moved by the front cylinder 17 and the rear moving table 18 is moved by the rear cylinder 19, but only one of the front moving table 16 and the rear moving table 18 moves and the other seems to be stationary. In addition, the movement is controlled.

以上の述べた制動力測定装置１０の作用を次に述べる。
図３で前進走行状態での前輪に係る制動力を測定する方法を説明する。
図５で前進走行状態での後輪に係る制動力を測定する方法を説明する。
図６で後進走行状態での前輪に係る制動力を測定する方法を説明する。
図７で後進走行状態での後輪に係る制動力を測定する方法を説明する。 The operation of the braking force measuring apparatus 10 described above will be described next.
A method of measuring the braking force related to the front wheels in the forward traveling state will be described with reference to FIG.
A method of measuring the braking force related to the rear wheel in the forward traveling state will be described with reference to FIG.
A method of measuring the braking force relating to the front wheels in the reverse traveling state will be described with reference to FIG.
A method of measuring the braking force related to the rear wheel in the reverse traveling state will be described with reference to FIG.

図３（ａ）に示すように、前輪測定ローラ２３と後輪測定ローラ３３の間隔を、車両４３のホイールベースＬ１と同じに設定し、前輪１１を前輪測定ローラ２３に跨るように支持させ、後輪１３を後輪測定ローラ３３に跨るように支持させる（第１の工程）。   As shown in FIG. 3A, the distance between the front wheel measurement roller 23 and the rear wheel measurement roller 33 is set to be the same as the wheel base L1 of the vehicle 43, and the front wheel 11 is supported so as to straddle the front wheel measurement roller 23. The rear wheel 13 is supported so as to straddle the rear wheel measuring roller 33 (first step).

前方シリンダ１７を伸動させ、前輪測定ローラ２３をΔＬ（２０〜４０ｍｍ程度）だけ、後輪測定ローラ３３に接近させる。このときには、予め前輪測定ローラ２３を回転自在とし、後輪測定ローラ３３を非回転状態にしておくことが望ましい。   The front cylinder 17 is extended, and the front wheel measurement roller 23 is moved closer to the rear wheel measurement roller 33 by ΔL (about 20 to 40 mm). At this time, it is desirable that the front wheel measurement roller 23 is rotatable in advance and the rear wheel measurement roller 33 is not rotated.

結果、図３（ｂ）に示すように、前輪測定ローラ２３と後輪測定ローラ３３の間隔がＬ２（Ｌ２＝Ｌ１−ΔＬ）となり、前輪１１が前輪前側ローラ２１に載り上がる（第２の工程）。
以降、（ｃ）、（ｄ）では、前輪測定ローラ２３と後輪測定ローラ３３の間隔はＬ２のままとする。 As a result, as shown in FIG. 3B, the distance between the front wheel measurement roller 23 and the rear wheel measurement roller 33 is L2 (L2 = L1-ΔL), and the front wheel 11 is placed on the front wheel front roller 21 (second step). ).
Thereafter, in (c) and (d), the distance between the front wheel measurement roller 23 and the rear wheel measurement roller 33 remains L2.

図３（ｃ）において、駆動源２７により前輪測定ローラ２３を車両が前進する方向に回す（第３の工程）。
図３（ｄ）において、車両のブレーキ操作を行い、前輪１１を停止させる。すると、前輪１１により、前輪前側ローラ２１が制動され、前輪測定ローラ２３が制動される。この制動による負荷が負荷検出器２６で検出される（第４の工程）。
この後、前輪測定ローラ２３を元の位置に戻し、（ａ）に戻る。 In FIG. 3C, the front wheel measuring roller 23 is rotated by the drive source 27 in the direction in which the vehicle moves forward (third step).
In FIG.3 (d), the brake operation of a vehicle is performed and the front wheel 11 is stopped. Then, the front wheel 11 is braked by the front wheel 11, and the front wheel measuring roller 23 is braked. The load due to this braking is detected by the load detector 26 (fourth step).
Thereafter, the front wheel measuring roller 23 is returned to the original position, and the process returns to (a).

図３（ｄ）の４部拡大図である図４で、本発明の特徴を説明する。
実施例である図４（ａ）に示すように、前輪１１が前輪前側ローラ２１に乗った状態で、前輪前側ローラ２１が前輪１１を回そうとし、前輪１１が制動されている場合を考えると、前輪１１に前輪車軸荷重Ｗｔ、後輪側から受ける前後力Ｆｔ、前輪前側ローラ２１から受ける垂直反力Ｗｒ、前輪前側ローラ２１から受ける推進力Ｆｒが働いており、バランスが取られている。 The feature of the present invention will be described with reference to FIG. 4 which is an enlarged view of a portion 4 in FIG.
As shown in FIG. 4A, which is an embodiment, consider a case where the front wheel 11 is about to turn the front wheel 11 while the front wheel 11 is on the front wheel 21 and the front wheel 11 is braked. A front wheel axle load Wt, a front / rear force Ft received from the rear wheel side, a vertical reaction force Wr received from the front wheel front roller 21 and a propulsive force Fr received from the front wheel front roller 21 are exerted on the front wheel 11 and are balanced.

上下方向のバランスから、次に述べる（１）式が与えられ、車両前後方向のバランスから（２）式が与えられる。また、摩擦係数がμである摩擦力の関係から（３）式が与えられる。   The following formula (1) is given from the balance in the vertical direction, and formula (2) is given from the balance in the vehicle longitudinal direction. Further, the equation (3) is given from the relationship of the frictional force with the friction coefficient μ.

Figure 2012242152
Figure 2012242152

Ｆｒに係る（４）式が導き出された。この（４）式から、前輪車軸荷重Ｗｔ及び摩擦係数μが一定でも、推進力Ｆｒは前輪前側ローラ２１との接触角θによって変化することがわかる。推進力Ｆｒ／前輪車軸荷重Ｗｔ＝見掛け摩擦係数と定義すると。（４）式から、Ｆｒ／Ｗｔ＝μ／（ｃｏｓθ−μ・ｓｉｎθ）。
この式をグラフ化した図４（ｂ）に示すように、θに比例して見掛け摩擦係数が増加する。 Equation (4) relating to Fr was derived. From this equation (4), it can be seen that the propulsive force Fr varies depending on the contact angle θ with the front wheel front roller 21 even if the front wheel axle load Wt and the friction coefficient μ are constant. It is defined that propulsive force Fr / front wheel axle load Wt = apparent friction coefficient. From the equation (4), Fr / Wt = μ / (cos θ−μ · sin θ).
As shown in FIG. 4B, which is a graph of this equation, the apparent friction coefficient increases in proportion to θ.

θが変化することで、（４）式に示す推進力Ｆｒが変化することがわかった。Ｆｒには前後力Ｆｔの関係することが予想される。
そこで、前後力Ｆｔを検討する。 It turned out that propulsive force Fr shown to (4) Formula changes by changing (theta). It is expected that Fr is related to the longitudinal force Ft.
Therefore, the longitudinal force Ft is examined.

Figure 2012242152
Figure 2012242152

（７）式を図４（ｃ）でグラフ化すると、θが大きくなるほどＦｔが大きくなり、後輪側から押し戻そうとする力が必要になることがわかる。つまり、実際の車を考えた場合、後輪側がスリップしたりしてＦｔが大きくなれない場合、Ｆｒも大きくとれない。   When Expression (7) is graphed in FIG. 4C, it can be seen that Ft increases as θ increases, and a force to push back from the rear wheel side is necessary. That is, when an actual vehicle is considered, Fr cannot be increased when Ft cannot be increased due to slipping of the rear wheel side.

以上の説明から明らかなように、タイヤを制動させたときにローラの回転力により、タイヤに対してその回転方向への力（Ｆｒ）がかかる。その力（Ｆｒ）に対する反力として、車両を支持しようとする力（Ｆｔ）が作用する。この力（Ｆｔ）が結果として垂直反力（Ｗｒ）を増加させ、タイヤ／ローラ間の摩擦力を増加させる。   As is apparent from the above description, when the tire is braked, a force (Fr) in the rotational direction is applied to the tire by the rotational force of the roller. As a reaction force against the force (Fr), a force (Ft) for supporting the vehicle acts. This force (Ft) results in an increase in the vertical reaction force (Wr) and increases the tire / roller friction force.

次に、比較のために、図４（ｄ）で、前輪１２１が前輪後側ローラ１２２に車両前側で接している例を説明する。
実施例と同様に、上下方向のバランスから、次に述べる（１１）式が与えられ、車両前後方向のバランスから（１２）式が与えられる。また、摩擦係数がμである摩擦力の関係から（１３）式が与えられる。 Next, for comparison, an example in which the front wheel 121 is in contact with the front wheel rear roller 122 on the vehicle front side will be described with reference to FIG.
Similarly to the embodiment, the following equation (11) is given from the balance in the vertical direction, and the equation (12) is given from the balance in the vehicle longitudinal direction. Further, the equation (13) is given from the relationship of the frictional force with the friction coefficient μ.

Figure 2012242152
Figure 2012242152

上記（４）式と（１４）式において、μ、Ｗｔ、θは共通である。
（１４）式の分母（ｃｏｓθ＋μ・ｓｉｎθ）に比較して、（４）式の分母（ｃｏｓθ−μ・ｓｉｎθ）は、２・μ・ｓｉｎθだけ小さい。分母が小さければ、分数は大きくなるため、（１４）式で示す比較例の摩擦力Ｆｒより、（４）式で示す実施例の摩擦力Ｆｒが、格段に大きくなる。 In the above equations (4) and (14), μ, Wt, and θ are common.
Compared with the denominator (cos θ + μ · sin θ) in the equation (14), the denominator (cos θ−μ · sin θ) in the equation (4) is smaller by 2 · μ · sin θ. If the denominator is small, the fraction becomes large, so that the frictional force Fr of the embodiment shown by the equation (4) becomes much larger than the frictional force Fr of the comparative example shown by the equation (14).

結果、タイヤ表面の摩擦係数が通常より小さいときでも制動力測定が可能となる。   As a result, the braking force can be measured even when the friction coefficient of the tire surface is smaller than usual.

次に、図５で前進走行状態での後輪に係る制動力を測定する方法を説明する。
図５（ａ）に示すように、前輪測定ローラ２３と後輪測定ローラ３３の間隔を、車両４３のホイールベースＬ１と同じに設定し、前輪１１を前輪測定ローラ２３に跨るように支持させ、後輪１３を後輪測定ローラ３３に跨るように支持させる（第１の工程）。 Next, a method of measuring the braking force related to the rear wheel in the forward traveling state will be described with reference to FIG.
As shown in FIG. 5 (a), the distance between the front wheel measurement roller 23 and the rear wheel measurement roller 33 is set to be the same as the wheel base L1 of the vehicle 43, and the front wheel 11 is supported so as to straddle the front wheel measurement roller 23. The rear wheel 13 is supported so as to straddle the rear wheel measuring roller 33 (first step).

後方シリンダ１９を縮動させ、後輪測定ローラ３３をΔＬだけ、前輪測定ローラ２３から離す。   The rear cylinder 19 is contracted, and the rear wheel measuring roller 33 is separated from the front wheel measuring roller 23 by ΔL.

結果、図５（ｂ）に示すように、前輪測定ローラ２３と後輪測定ローラ３３の間隔がＬ３（Ｌ３＝Ｌ１＋ΔＬ）となり、後輪１３が後輪前側ローラ３１に載り上がる（第２の工程）。
以降、（ｃ）、（ｄ）では、前輪測定ローラ２３と後輪測定ローラ３３の間隔はＬ３のままとする。 As a result, as shown in FIG. 5B, the distance between the front wheel measurement roller 23 and the rear wheel measurement roller 33 is L3 (L3 = L1 + ΔL), and the rear wheel 13 is placed on the rear wheel front roller 31 (second step). ).
Hereinafter, in (c) and (d), the distance between the front wheel measurement roller 23 and the rear wheel measurement roller 33 remains L3.

図５（ｃ）において、駆動源３７により後輪測定ローラ３３を車両が前進する方向に回す（第３の工程）。
図５（ｄ）において、車両のブレーキ操作を行い、後輪１３を停止させる。すると、後輪１３により、後輪前側ローラ３１が制動され、後輪測定ローラ３３が制動される。この制動による負荷が負荷検出器３６で検出される（第４の工程）。
この後、後輪測定ローラ３３を元の位置に戻し、（ａ）に戻る。 In FIG.5 (c), the rear-wheel measurement roller 33 is rotated by the drive source 37 in the direction which a vehicle advances (3rd process).
In FIG. 5D, the vehicle brake operation is performed and the rear wheel 13 is stopped. Then, the rear wheel 13 is braked by the rear wheel 13 and the rear wheel measuring roller 33 is braked. The load due to this braking is detected by the load detector 36 (fourth step).
Thereafter, the rear wheel measuring roller 33 is returned to the original position, and the process returns to (a).

次に、図６で後進走行状態での前輪に係る制動力を測定する方法を説明する。
図６（ａ）に示すように、前輪測定ローラ２３と後輪測定ローラ３３の間隔を、車両４３のホイールベースＬ１と同じに設定し、前輪１１を前輪測定ローラ２３に跨るように支持させ、後輪１３を後輪測定ローラ３３に跨るように支持させる（第１の工程）。 Next, a method of measuring the braking force related to the front wheels in the reverse traveling state will be described with reference to FIG.
As shown in FIG. 6A, the distance between the front wheel measurement roller 23 and the rear wheel measurement roller 33 is set to be the same as the wheel base L1 of the vehicle 43, and the front wheel 11 is supported so as to straddle the front wheel measurement roller 23. The rear wheel 13 is supported so as to straddle the rear wheel measuring roller 33 (first step).

前方シリンダ１７を縮動させ、前輪測定ローラ２３をΔＬだけ、後輪測定ローラ３３から離す。   The front cylinder 17 is contracted, and the front wheel measurement roller 23 is separated from the rear wheel measurement roller 33 by ΔL.

結果、図６（ｂ）に示すように、前輪測定ローラ２３と後輪測定ローラ３３の間隔がＬ３（Ｌ３＝Ｌ１＋ΔＬ）となり、前輪１１が前輪後側ローラ２２に載り上がる（第２の工程）。
以降、（ｃ）、（ｄ）では、前輪測定ローラ２３と後輪測定ローラ３３の間隔はＬ３のままとする。 As a result, as shown in FIG. 6B, the distance between the front wheel measuring roller 23 and the rear wheel measuring roller 33 is L3 (L3 = L1 + ΔL), and the front wheel 11 is placed on the front wheel rear roller 22 (second step). .
Hereinafter, in (c) and (d), the distance between the front wheel measurement roller 23 and the rear wheel measurement roller 33 remains L3.

図６（ｃ）において、駆動源２７により前輪測定ローラ２３を車両が後進する方向に回す（第３の工程）。
図６（ｄ）において、車両のブレーキ操作を行い、前輪１１を停止させる。すると、前輪１１により、前輪前側ローラ２１が制動され、前輪測定ローラ２３が制動される。この制動による負荷が負荷検出器２６で検出される（第４の工程）。
この後、前輪測定ローラ２３を元の位置に戻し、（ａ）に戻る。 In FIG. 6C, the front wheel measuring roller 23 is rotated in the direction in which the vehicle moves backward by the drive source 27 (third step).
In FIG.6 (d), the brake operation of a vehicle is performed and the front wheel 11 is stopped. Then, the front wheel 11 is braked by the front wheel 11, and the front wheel measuring roller 23 is braked. The load due to this braking is detected by the load detector 26 (fourth step).
Thereafter, the front wheel measuring roller 23 is returned to the original position, and the process returns to (a).

次に、図７で後進走行状態での後輪に係る制動力を測定する方法を説明する。
図７（ａ）に示すように、前輪測定ローラ２３と後輪測定ローラ３３の間隔を、車両４３のホイールベースＬ１と同じに設定し、前輪１１を前輪測定ローラ２３に跨るように支持させ、後輪１３を後輪測定ローラ３３に跨るように支持させる（第１の工程）。 Next, a method for measuring the braking force related to the rear wheel in the reverse traveling state will be described with reference to FIG.
As shown in FIG. 7A, the distance between the front wheel measurement roller 23 and the rear wheel measurement roller 33 is set to be the same as the wheel base L1 of the vehicle 43, and the front wheel 11 is supported so as to straddle the front wheel measurement roller 23. The rear wheel 13 is supported so as to straddle the rear wheel measuring roller 33 (first step).

後方シリンダ１９を伸動させ、後輪測定ローラ３３をΔＬだけ、前輪測定ローラ２３へ接近させる。
結果、図７（ｂ）に示すように、前輪測定ローラ２３と後輪測定ローラ３３の間隔がＬ２（Ｌ２＝Ｌ１−ΔＬ）となり、後輪１３が後輪後側ローラ３２に載り上がる（第２の工程）。
以降、（ｃ）、（ｄ）では、前輪測定ローラ２３と後輪測定ローラ３３の間隔はＬ２のままとする。 The rear cylinder 19 is extended, and the rear wheel measuring roller 33 is moved closer to the front wheel measuring roller 23 by ΔL.
As a result, as shown in FIG. 7B, the distance between the front wheel measuring roller 23 and the rear wheel measuring roller 33 is L2 (L2 = L1-ΔL), and the rear wheel 13 is placed on the rear wheel rear roller 32 (first). Step 2).
Thereafter, in (c) and (d), the distance between the front wheel measurement roller 23 and the rear wheel measurement roller 33 remains L2.

図７（ｃ）において、駆動源３７により後輪測定ローラ３３を車両が後進する方向に回す（第３の工程）。
図７（ｄ）において、車両のブレーキ操作を行い、後輪１３を停止させる。すると、後輪１３により、後輪後側ローラ３２が制動され、後輪測定ローラ３３が制動される。この制動による負荷が負荷検出器３６で検出される（第４の工程）。
この後、後輪測定ローラ３３を元の位置に戻し、（ａ）に戻る。 In FIG. 7C, the rear wheel measuring roller 33 is rotated by the drive source 37 in the direction in which the vehicle moves backward (third step).
In FIG. 7D, the vehicle is braked to stop the rear wheel 13. Then, the rear wheel rear roller 32 is braked by the rear wheel 13, and the rear wheel measuring roller 33 is braked. The load due to this braking is detected by the load detector 36 (fourth step).
Thereafter, the rear wheel measuring roller 33 is returned to the original position, and the process returns to (a).

本実施例では、図３、図５〜図７で説明したように、前方シリンダ１７と後方シリンダ１９を設け、前輪を測定する場合には前方シリンダ１７を作動させ、後輪を測定する場合には後方シリンダ１９を作動させる。測定部位側のシリンダ１７又は１９を作動させるために、測定作業が円滑になる。   In this embodiment, as described in FIGS. 3 and 5 to 7, the front cylinder 17 and the rear cylinder 19 are provided. When measuring the front wheel, the front cylinder 17 is operated and when measuring the rear wheel. Actuates the rear cylinder 19. Since the cylinder 17 or 19 on the measurement site side is operated, the measurement operation becomes smooth.

しかし、図２において、前方シリンダ１７と後方シリンダ１９の一方を省くことは可能である。
例えば、後方シリンダ１９を省いたときには、前方シリンダ１７及び前方移動台１６を用いて、図５や図７に示す間隔がＬ３を造り出す。後方移動台１８は移動させる必要がないので、簡単になる。 However, in FIG. 2, one of the front cylinder 17 and the rear cylinder 19 can be omitted.
For example, when the rear cylinder 19 is omitted, the front cylinder 17 and the front moving table 16 are used to create the distance L3 shown in FIGS. Since the rear moving table 18 does not need to be moved, it is simplified.

本発明は、四輪車の前後車輪に関する制動力測定に好適である。   The present invention is suitable for measuring a braking force related to front and rear wheels of a four-wheel vehicle.

１０…制動力測定装置、１１…前輪、１１Ｌ…左前輪、１１Ｒ…右前輪、１３…後輪、１３Ｌ…左後輪、１３Ｒ…右後輪、２１…前輪前側ロール、２２…前輪後側ロール、２３…前輪測定ロール、２６、３６…負荷検出器、３１…後輪前側ロール、３２…後輪後側ロール、３３…後輪測定ロール、４１…制動力演算部、４３…車両。   DESCRIPTION OF SYMBOLS 10 ... Braking force measuring device, 11 ... Front wheel, 11L ... Left front wheel, 11R ... Right front wheel, 13 ... Rear wheel, 13L ... Left rear wheel, 13R ... Right rear wheel, 21 ... Front wheel front roll, 22 ... Front wheel rear roll , 23 ... front wheel measurement roll, 26, 36 ... load detector, 31 ... rear wheel front side roll, 32 ... rear wheel rear side roll, 33 ... rear wheel measurement roll, 41 ... braking force calculation unit, 43 ... vehicle.

Claims (2)

車両の左右一対の前輪及び左右一対の後輪を、各車輪毎に前記一対の測定ローラに跨るように支持させ、前記測定ローラを回転させ、次に車両のブレーキ操作を行い、前記測定ローラに作用する負荷に基づいて、前進走行状態におけるブレーキの制動性能を前記前輪と前記後輪の各々について測定する制動力測定方法において、
前記前輪を前輪前側ローラと前輪後側ローラからなる一対の前輪測定ローラに跨るように支持させ、前記後輪を後輪前側ローラと後輪後側ローラからなる一対の後輪測定ローラに跨るように支持させる第１の工程と、
前記前輪を測定対象とするときには、前記後輪測定ローラを前記前輪測定ローラに接近させることで、前記前輪が前記前輪前側ローラに載り上がるようにし、
前記後輪を測定対象とするときには、前記前輪測定ローラを前記後輪測定ローラから離間させることで、前記後輪が前記後輪前側ローラに載り上がるようにする第２の工程と、
前記前輪測定時には、前記前輪測定ローラを車両が前進する方向へ回転させ、
前記後輪測定時には、前記後輪測定ローラを車両が前進する方向へ回転させる第３の工程と、
前記車両のブレーキ操作を行い、前輪測定時には前記前輪測定ローラに作用する負荷を測定し、後輪測定時には前記後輪測定ローラに作用する負荷を測定する第４の工程とからなることを特徴とする制動力測定方法。 A pair of left and right front wheels and a pair of left and right rear wheels of the vehicle are supported so as to straddle the pair of measurement rollers for each wheel, the measurement rollers are rotated, and then the brake operation of the vehicle is performed. In the braking force measurement method for measuring the braking performance of the brake in the forward traveling state for each of the front wheel and the rear wheel based on the acting load,
The front wheel is supported so as to straddle a pair of front wheel measuring rollers including a front wheel front roller and a front wheel rear roller, and the rear wheel is straddling a pair of rear wheel measuring rollers including a rear wheel front roller and a rear wheel rear roller. A first step to be supported by
When the front wheel is to be measured, the front wheel is placed on the front wheel front roller by bringing the rear wheel measuring roller closer to the front wheel measuring roller,
When the rear wheel is to be measured, a second step of allowing the rear wheel to be placed on the rear wheel front roller by separating the front wheel measuring roller from the rear wheel measuring roller;
During the front wheel measurement, the front wheel measurement roller is rotated in the direction in which the vehicle moves forward,
A third step of rotating the rear wheel measuring roller in a direction in which the vehicle moves forward during the measurement of the rear wheel;
And a fourth step of measuring the load acting on the front wheel measuring roller when measuring the front wheel and measuring the load acting on the rear wheel measuring roller when measuring the rear wheel. Braking force measurement method. 車両の左右一対の前輪及び左右一対の後輪を、各車輪毎に前記一対の測定ローラに跨るように支持させ、前記測定ローラを回転させ、次に車両のブレーキ操作を行い、前記測定ローラに作用する負荷に基づいて、後進走行状態におけるブレーキの制動性能を前記前輪と前記後輪の各々について測定する制動力測定方法において、
前記前輪を前輪前側ローラと前輪後側ローラからなる一対の前輪測定ローラに跨るように支持させ、前記後輪を後輪前側ローラと後輪後側ローラからなる一対の後輪測定ローラに跨るように支持させる第１の工程と、
前記前輪を測定対象とするときには、前記後輪測定ローラを前記前輪測定ローラから離間させることで、前記前輪が前記前輪後側ローラに載り上がるようにし、
前記後輪を測定対象とするときには、前記前輪測定ローラを前記後輪測定ローラへ接近させることで、前記後輪が前記後輪後側ローラに載り上がるようにする第２の工程と、
前記前輪測定時には、前記前輪測定ローラを車両が後進する方向へ回転させ、
前記後輪測定時には、前記後輪測定ローラを車両が後進する方向へ回転させる第３の工程と、
前記車両のブレーキ操作を行い、前輪測定時には前記前輪測定ローラに作用する負荷を測定し、後輪測定時には前記後輪測定ローラに作用する負荷を測定する第４の工程とからなることを特徴とする制動力測定方法。 A pair of left and right front wheels and a pair of left and right rear wheels of the vehicle are supported so as to straddle the pair of measurement rollers for each wheel, the measurement rollers are rotated, and then the brake operation of the vehicle is performed. In the braking force measurement method for measuring the braking performance of the brake in the reverse traveling state for each of the front wheel and the rear wheel based on the acting load,
The front wheel is supported so as to straddle a pair of front wheel measuring rollers including a front wheel front roller and a front wheel rear roller, and the rear wheel is straddling a pair of rear wheel measuring rollers including a rear wheel front roller and a rear wheel rear roller. A first step to be supported by
When the front wheel is to be measured, the front wheel is placed on the front wheel rear roller by separating the rear wheel measurement roller from the front wheel measurement roller,
When the rear wheel is to be measured, a second step of causing the rear wheel to be placed on the rear wheel rear roller by bringing the front wheel measuring roller closer to the rear wheel measuring roller;
At the time of measuring the front wheel, the front wheel measuring roller is rotated in a direction in which the vehicle moves backward,
A third step of rotating the rear wheel measuring roller in a direction in which the vehicle moves backward when the rear wheel is measured;
And a fourth step of measuring the load acting on the front wheel measuring roller when measuring the front wheel and measuring the load acting on the rear wheel measuring roller when measuring the rear wheel. Braking force measurement method.
JP2011110207A 2011-05-17 2011-05-17 Method for measuring braking force Pending JP2012242152A (en)

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CN106289810A (en) * 2016-11-03 2017-01-04 成都成保发展股份有限公司 AWD car braking check-out console
CN106969920A (en) * 2017-02-27 2017-07-21 吉林大学 Line of vehicles control hydraulic braking system hardware is the-loop test bed
CN107571759A (en) * 2017-09-25 2018-01-12 嘉兴宇阳太阳能有限公司 A kind of solar telephone charge maintenance device
CN112161822A (en) * 2020-09-25 2021-01-01 中车长春轨道客车股份有限公司 Dynamic test system and dynamic test method for subway vehicle

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CN106289810A (en) * 2016-11-03 2017-01-04 成都成保发展股份有限公司 AWD car braking check-out console
CN106969920A (en) * 2017-02-27 2017-07-21 吉林大学 Line of vehicles control hydraulic braking system hardware is the-loop test bed
CN107571759A (en) * 2017-09-25 2018-01-12 嘉兴宇阳太阳能有限公司 A kind of solar telephone charge maintenance device
CN112161822A (en) * 2020-09-25 2021-01-01 中车长春轨道客车股份有限公司 Dynamic test system and dynamic test method for subway vehicle
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