JP5423365B2 - Wear amount measuring tool and measuring method using the wear amount measuring tool - Google Patents

Description

  The present invention relates to a wear amount measuring tool for measuring the wear amount of a hub and a disc wheel of a vehicle traveling device, and a measurement method using the wear amount measuring tool.

  There was a method of measuring the wear amount of the hub using a straight edge and a thickness gauge, which are ordinary measuring tools.

  Moreover, there is no dedicated measuring tool and measuring method for the amount of wear of the disc wheel.

  Patent Document 1 relates to a hub disk wheel mounting structure.

JP-A-10-71801

  The conventional method for measuring the amount of wear on a hub is to “apply a straight edge so that it touches two hub bolts on the wheel mounting surface”, but even if the straight edge is applied to the wheel mounting surface of the hub, the wheel mounting Since the surface is extremely narrow and the straight edge rides on the hub bolt or hits the flange of the hub bolt, the straight edge is unstable and unstable. Therefore, with this method, the amount of wear of the hub cannot be measured accurately, and the measured values vary greatly (large individual differences).

  Further, there is a need for a wear amount measuring tool that can measure the wear amount of a disc wheel. It is preferable that the wear amount of both the hub and the disc wheel can be measured with a single tool.

  If wear of the hub and disc wheel of the vehicle traveling device progresses, the wheel bolt (hub bolt) may be damaged, the wheel nut may be loosened, the disc wheel may crack, and in the worst case, it may lead to a serious accident such as wheel dropping. For safety reasons, the management of the hub and the disc wheel is very important. Therefore, in order to prevent these serious accidents, it is necessary to measure the wear amount of the hub and the disc wheel simply and accurately. Therefore, this wear amount measuring tool solves these problems.

  Accordingly, an object of the present invention is to provide a wear amount measuring tool capable of accurately measuring the wear amount of the hub in a stable state (without wobbling) by anyone, and capable of measuring the wear amount of both the hub and the disk wheel. And providing a measuring method thereof.

  In order to achieve the above object, the present invention provides an insertion hole through which the hub bolt can be inserted in a wear amount measuring tool for measuring the wear amount of a hub of a vehicle traveling device and a disc wheel fastened to the hub by a hub bolt. , A hub wear amount measuring unit provided on the tool body for measuring the wear amount of the hub, and a disc wheel provided on the tool body for measuring the wear amount of the disc wheel. A wear amount measuring unit, and the hub wear amount measuring unit includes an unweared portion of the hub outer peripheral wheel mounting surface and a hub inner peripheral wheel mounting surface of the hub so as to straddle the hub bolt when the hub wear amount is measured. Measure the clearance gap between the wear part of the hub outer peripheral wheel mounting surface or the wear part of the hub inner peripheral wheel mounting surface. The disc wheel wear amount measuring section is located between the wheel outer peripheral side hub contact surface and the wheel inner peripheral side hub contact surface of the disc wheel when measuring the disc wheel wear amount. A wheel contact surface that contacts the wheel outer peripheral side hub contact surface and the wheel inner peripheral side hub contact surface so as to straddle the hub non-contact surface to be opposed to the hub non-contact surface when measuring the wear amount of the disk wheel. And a measurement reference surface for measuring a gap interval between the disc wheel and the non-contact surface of the hub.

  A thickness gauge may be connected to the tool body by a wire.

  Further, the present invention is the measuring method using the wear amount measuring tool, wherein the insertion hole of the tool body is inserted into the hub bolt, and the hub contact surface of the hub wear amount measuring portion is the hub outer peripheral wheel in the hub. The abutment portion of the hub contact surface and the outer peripheral wheel mounting surface of the hub or the inner peripheral wheel mounting surface of the hub in a state of being in contact with the unweared portion of the mounting surface and the unweared portion of the hub inner peripheral wheel mounting surface. And the measured gap distance is defined as the amount of wear of the hub, and the wheel contact surface of the disk wheel wear amount measuring unit is the wheel contact surface on the outer peripheral side of the disk wheel. Measure the clearance gap between the measurement reference surface of the disc wheel wear amount measuring section and the non-hub contact surface of the disc wheel in a state where the contact surface is in contact with the wheel inner peripheral hub contact surface. Is a value obtained by subtracting from the distance between the the measured gap distance the disc wheel wear amount measuring unit of the wheel contact surface and the measurement reference surface which the wear amount of the disc wheel.

  According to the present invention, there is provided a wear amount measuring tool capable of accurately measuring the wear amount of the hub in a stable state regardless of who is performed, and capable of measuring the wear amount of both the hub and the disc wheel, and a measuring method thereof. There is an excellent effect of being able to.

FIG. 1 is a perspective view of a wear amount measuring tool according to an embodiment of the present invention. FIG. 2 is a perspective view schematically showing the hub. FIG. 3 is a cross-sectional view of the hub showing the measurement of the wear amount of the hub. FIG. 4 is a cross-sectional view of the disk wheel showing the amount of wear of the disk wheel.

  Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

  First, the hub 2 and the disk wheel 3 of the vehicle travel device (vehicle wheel support part) that are the measurement targets of the wear amount measuring tool 1 according to the present embodiment will be described.

  As shown in FIGS. 2 and 3, the hub 2 supports the disc wheel 3, an annular hub outer peripheral wheel mounting surface 4 formed along the circumferential direction of the hub 2, and the hub outer peripheral side. An annular hub inner peripheral wheel mounting surface 5 formed along the circumferential direction of the hub 2 on the radial inner side of the hub 2 with respect to the wheel mounting surface 4, and the hub outer peripheral wheel mounting surface 4 and the hub inner peripheral side. And a groove 6 provided between the wheel mounting surface 5 and the wheel mounting surface 5. A plurality of hub bolts (wheel bolts) 7 for fastening the disc wheel 3 are provided in the groove 6 at intervals along the circumferential direction of the hub 2. In FIG. 2, only two hub bolts 7 are shown, and the other hub bolts 7 are omitted.

  As shown in FIG. 4, the disc wheel 3 supports a tire (not shown), the wheel outer peripheral side hub contact surface 8 with which the hub outer peripheral side wheel mounting surface 4 of the hub 2 contacts, and the hub 2. The hub outer peripheral side wheel mounting surface 4 is located between the wheel inner peripheral side hub contact surface 9 with which the hub inner peripheral side wheel mounting surface 5 contacts, and the wheel outer peripheral side hub contact surface 8 and the wheel inner peripheral side hub contact surface 9. And the hub non-contact surface 10 to which neither of the wheel inner peripheral wheel mounting surfaces 5 comes into contact. 4 shows a state in which the wheel outer peripheral hub contact surface 8 and the wheel inner peripheral hub contact surface 9 are worn, and the wheel outer peripheral hub contact surface 8 and the wheel inner peripheral hub contact When the surface 9 is not worn, the wheel outer peripheral side hub contact surface 8, the wheel inner peripheral side hub contact surface 9 and the hub non-contact surface 10 are flush with each other.

  3 and 4, the hub outer peripheral wheel mounting surface 4 and the hub inner peripheral wheel mounting surface 5 of the hub 2 are the wheel outer peripheral hub contact surface 8 of the disc wheel 3 and the wheel inner peripheral side, respectively. The wheel wears due to contact with the hub contact surface 9 (the worn portions are indicated by reference numerals d1 and d2 in FIG. 3), and the wheel outer peripheral hub contact surface 8 and the wheel inner peripheral hub contact surface 9 of the disc wheel 3 are respectively The outer peripheral wheel mounting surface 4 and the inner peripheral wheel mounting surface 5 of the hub wear out. However, the portions near the hub bolt hole 2a on the hub outer peripheral wheel mounting surface 4 and the hub inner peripheral wheel mounting surface 5 of the hub 2 are inward of the hub bolt holes (not shown) of the disc wheel 3, and Wear does not occur because it does not contact the wheel outer peripheral hub contact surface 8 and the wheel inner peripheral hub contact surface 9 (unweared portions are indicated by reference numerals n1 and n2 in FIG. 3), and the non-hub contact surface of the disc wheel 3 Since 10 does not contact the hub outer peripheral wheel mounting surface 4 and the hub inner peripheral wheel mounting surface 5 of the hub 2, no wear occurs. Therefore, in the present embodiment, the wear of the hub 2 is determined based on the unweared portions (original portions) n1 and n2 in the vicinity of the hub bolt hole 2a of the hub outer peripheral wheel mounting surface 4 and the hub inner peripheral wheel mounting surface 5 of the hub 2. The amount of wear of the disc wheel 3 is measured with reference to the hub non-contact surface 10 of the disc wheel 3.

  As shown in FIG. 1, the wear amount measuring tool 1 according to this embodiment includes a substantially rectangular parallelepiped tool body 12 in which an insertion hole 11 into which a hub bolt 7 can be inserted is formed, and a hub 2 provided in the tool body 12. A hub wear amount measuring unit 13 for measuring the wear amount and a disc wheel wear amount measuring unit 14 provided on the tool body 12 for measuring the wear amount of the disc wheel 3 are provided.

  The hub wear amount measuring unit 13 is configured so that when the wear amount of the hub 2 is measured, the unweared portion n1 of the hub outer peripheral wheel mounting surface 4 and the unweared portion n2 of the hub inner peripheral wheel mounting surface 5 of the hub 2 so as to straddle the hub bolt 7. And a hub contact surface 15 for measuring a gap distance g1 between the wear portion d1 of the hub outer peripheral wheel mounting surface 4 or the wear portion d2 of the hub inner peripheral wheel mounting surface 5. doing. In the present embodiment, the hub contact surface 15 is formed so as to be able to straddle the hub bolt 7 by machining the groove 16 on the hub contact surface 15 side of the tool body 12.

  The disc wheel wear amount measuring unit 14 straddles the non-hub contact surface 10 located between the wheel outer peripheral side hub contact surface 8 and the wheel inner peripheral side hub contact surface 9 of the disc wheel 3 when the wear amount of the disc wheel 3 is measured. In this way, the wheel contact surface 17 that contacts the wheel outer peripheral hub contact surface 8 and the wheel inner peripheral hub contact surface 9 and the non-hub contact surface 10 when measuring the wear amount of the disk wheel 3 3 and a measurement reference surface 18 for measuring the gap distance g2 between the non-hub contact surface 10. In the present embodiment, the wheel contact surface 17 and the measurement reference surface 18 are formed on a surface orthogonal to the hub contact surface 15 in the tool body 12. In the present embodiment, the wheel contact surface 17 and the measurement reference surface 18 are formed by machining the groove 19 on the wheel contact surface 17 side of the tool body 12.

  In the present embodiment, a thickness gauge (gap gauge) 21 is connected to the tool body 12 by a wire 20.

  Hereinafter, a measuring method using the wear amount measuring tool according to the present embodiment will be described with reference to FIGS.

<Measurement of hub wear>
(1) As shown in FIG. 3, when measuring the amount of wear of the hub 2 (the amount of wear on the hub outer peripheral wheel mounting surface 4 or the hub inner peripheral wheel mounting surface 5 of the hub 2), The insertion hole 11 and the hub wear amount measuring unit 13 are used.

  (2) The hub wear amount measuring portion 13 (hub contact surface 15) of the tool body 12 is placed sideways, and the insertion hole 11 of the tool body 12 is inserted into the hub bolt 7.

  (3) An unweared portion n1 of the hub outer peripheral side wheel mounting surface 4 and an unworn portion n2 of the hub inner peripheral side wheel mounting surface 5 of the hub 2 with the hub contact surface 15 of the hub wear amount measuring unit 13 as a reference. Make contact.

  (4) The clearance between the hub contact surface 15 of the hub wear amount measuring unit 13 and the unworn portion d1 of the hub outer peripheral wheel mounting surface 4 or the worn portion d2 of the hub inner peripheral wheel mounting surface 5 in the hub 2 is confirmed. (Visual examination).

  (5) With the thickness gauge 21 (see FIG. 1), the hub contact surface 15 of the hub wear amount measuring unit 13 and the unweared portion d1 of the hub outer peripheral wheel mounting surface 4 of the hub 2 or the hub inner peripheral wheel mounting surface 5 The gap interval g1 with the worn portion d2 is measured, and the measured gap interval g1 is set as the wear amount w1 of the hub 2.

<Measurement of disc wheel wear>
(1) As shown in FIG. 4, when measuring the wear amount of the disc wheel 3, the disc wheel wear amount measuring unit 14 of the tool body 12 is used.

  (2) The disc wheel 3 is placed with the wheel outer peripheral hub contact surface 8 and the wheel inner peripheral hub contact surface 9 of the disc wheel 3 facing upward.

  (3) The disc wheel wear amount measuring unit 14 of the tool body 12 so as to straddle the hub non-contact surface 10 of the disc wheel 3 with the disc wheel wear amount measuring unit 14 (the wheel contact surface 17 and the measurement reference surface 18) facing down. The wheel contact surface 17 is brought into contact with the wheel outer peripheral hub contact surface 8 and the wheel inner peripheral hub contact surface 9 of the disc wheel 3.

  (4) The clearance g2 between the measurement reference surface 18 of the disc wheel wear amount measuring unit 14 and the hub non-contact surface 10 of the disc wheel 3 is measured by the thickness gauge 21 (see FIG. 1).

  (5) A value obtained by subtracting the measured gap interval g2 from the distance s between the measurement reference surface 18 and the wheel contact surface 17 of the disc wheel wear amount measuring unit 14 is defined as a disc wheel wear amount w2.

  In short, according to this embodiment, the tool main body 12 in which the insertion hole 11 into which the hub bolt 7 can be inserted is formed, and the hub wear amount measuring unit 13 provided in the tool main body 12 for measuring the wear amount of the hub 2. A disc wheel wear amount measuring unit 14 provided on the tool body 12 for measuring the wear amount of the disc wheel 3, and the hub wear amount measuring unit 13 straddles the hub bolt 7 when measuring the wear amount of the hub 2. The hub 2 is brought into contact with the unworn portion n1 of the hub outer peripheral side wheel mounting surface 4 and the unworn portion n2 of the hub inner peripheral wheel mounting surface 5 so as to contact the worn portion d1 of the hub outer peripheral side wheel mounting surface 4 or within the hub. A hub contact surface 15 for measuring the gap distance g1 between the peripheral wheel mounting surface 5 and the wear portion d2 is provided, and the disc wheel wear amount measuring unit 14 wears the disc wheel 3. The wheel outer peripheral hub contact surface 8 and the wheel inner peripheral hub so as to straddle the hub non-contact surface 10 located between the wheel outer peripheral hub contact surface 8 and the wheel inner peripheral hub contact surface 9 of the disc wheel 3 at regular times. A gap distance g2 between the wheel contact surface 15 to be in contact with the contact surface 9 and the non-hub contact surface 10 of the disk wheel 3 when the wear amount of the disk wheel 3 is measured is opposed to the hub non-contact surface 10 of the disk wheel 3. Since the wear amount measuring tool 1 is configured to have the measurement reference surface 18 for measurement, the wear of the hub 2 is maintained in a stable state by anyone using the wear amount measuring tool 1 according to the present embodiment. The amount can be measured accurately, and the wear amount of both the hub 2 and the disc wheel 3 can be measured.

DESCRIPTION OF SYMBOLS 1 Wear amount measuring tool 2 Hub 3 Disc wheel 4 Hub outer peripheral side wheel mounting surface 5 Hub inner peripheral side wheel mounting surface 7 Hub bolt 8 Wheel outer peripheral side hub contact surface 9 Wheel inner peripheral hub contact surface 10 Hub non-contact surface 11 Insertion hole 12 Tool body 13 Hub wear amount measurement unit 14 Disc wheel wear amount measurement unit 15 Hub contact surface 17 Wheel contact surface 18 Measurement reference surface 20 Wire 21 Thickness gauge

Claims (3)

In a wear amount measuring tool for measuring a wear amount of a hub of a vehicle traveling device and a disc wheel fastened to the hub by a hub bolt,
A tool main body in which an insertion hole into which the hub bolt can be inserted is formed, a hub wear amount measuring unit provided in the tool main body for measuring the wear amount of the hub, and wear of the disc wheel provided in the tool main body. A disc wheel wear amount measuring unit for measuring the amount,
The hub wear amount measuring unit abuts against an unweared portion of the hub outer peripheral wheel mounting surface and an unworn portion of the hub inner peripheral wheel mounting surface so as to straddle the hub bolt when the hub wear amount is measured. And a hub contact surface for measuring the gap distance between the wear portion of the hub outer peripheral side wheel mounting surface or the wear portion of the hub inner peripheral wheel mounting surface,
The disc wheel wear amount measuring unit is configured to straddle a hub non-contact surface located between a wheel outer peripheral hub contact surface and a wheel inner peripheral hub contact surface of the disc wheel when measuring the disc wheel wear amount. A wheel contact surface that is in contact with the outer peripheral hub contact surface and the wheel inner hub contact surface, and a non-hub contact surface of the disk wheel that faces the hub non-contact surface when measuring the wear amount of the disk wheel. A tool for measuring the amount of wear, comprising a measurement reference surface for measuring a gap interval between the first and second electrodes.   The wear amount measuring tool according to claim 1, wherein a thickness gauge is connected to the tool body by a wire. In the measuring method using the wear amount measuring tool according to claim 1 or 2,
The insertion hole of the tool body is inserted into the hub bolt, and the hub abutment surface of the hub wear amount measuring portion is used as an unweared portion of the hub outer peripheral wheel mounting surface and an unweared portion of the hub inner peripheral wheel mounting surface. In this state, the gap distance between the hub abutting surface and the wear part of the hub outer peripheral wheel mounting surface or the wear part of the hub inner peripheral wheel mounting surface is measured. The amount of wear of the hub,
On the other hand, in a state where the wheel contact surface of the disc wheel wear amount measuring unit is in contact with the wheel outer peripheral side hub contact surface and the wheel inner peripheral side hub contact surface of the disc wheel, the disc wheel wear amount measuring unit Measure the gap distance between the measurement reference surface and the non-hub contact surface of the disk wheel, and subtract the measured gap distance from the distance between the wheel contact surface of the disk wheel wear amount measuring unit and the measurement reference surface. The measured value is the amount of wear of the disc wheel.

Images