JP3839244B2 - Support device for belt assembly - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a support device that supports a belt assembly for a continuously variable transmission.
[0002]
[Prior art]
In a belt assembly for a continuously variable transmission, a plurality of elements arranged in an annular shape are bound together by an endless metal ring. Conventionally, this type of belt assembly is inspected by manually applying a thickness gauge to the clearance between elements at arbitrarily selected positions and measuring the clearance visually to determine whether the measured clearance is appropriate. It was done by. However, the measurement by the thickness gauge is a manual operation, so that not only the efficiency is bad, but also the inspection accuracy varies depending on the skill level of the operator.
[0003]
Therefore, after the belt assembly is passed over a support device having a pair of pulleys (specifically, a driving pulley and a driven pulley), the belt assembly is rotated and adapted, and then between the pulleys of the belt assembly. It is conceivable to measure the amount of deflection by pressing a part of the position. According to this, by comparing the amount of bending measured at this time with the amount of bending of the belt assembly in which the clearance between the elements is appropriate as a whole and the predetermined number of elements is not insufficient, the belt assembly Whether it is appropriate or not can be inspected with stable accuracy.
[0004]
By the way, the pair of pulleys for suspending and supporting the belt assembly is configured to be able to approach and separate between the shafts, and when the belt assembly is laid over both pulleys, between the shafts of both pulleys. When measuring the amount of deflection, the two pulleys are separated from each other by a predetermined tension.
[0005]
At this time, the belt assembly spanned between the two pulleys is formed with a pair of curved portions that are curved along the two pulleys and a pair of string portions that are stretched between the two pulleys. Then, the amount of deflection is measured at a part of the string portion. If the spanning outer diameter of both pulleys is relatively small, the clearance between the elements is concentrated on the curved portion, and no accurate deflection occurs at the string portion. .
[0006]
Therefore, by making the bending diameter of the bending portion relatively large (specifically, the maximum diameter when used in a continuously variable transmission) during measurement, the clearance between elements is prevented from concentrating on the bending portion. However, it is necessary to cause accurate bending in the string portion.
[0007]
However, for this reason, if both pulleys have a relatively large diameter, the pulleys interfere with each other when the belt assembly is passed over both pulleys, and the shafts cannot be sufficiently close to each other. It is extremely difficult to carry the belt assembly on the belt.
[0008]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a belt assembly support device that can solve the above inconvenience and can carry out a belt assembly work between a pair of pulleys very easily.
[0009]
[Means for Solving the Problems]
In order to achieve such an object, the present invention provides a belt including a pair of pulleys that span and support a belt assembly for a continuously variable transmission formed by binding a plurality of elements arranged in an annular shape by an endless metal ring. In the assembly support apparatus, at least one of the pulleys includes a pair of disk members that are separated from each other in the axial direction, and a V-groove is formed between the disk members to span the belt assembly. In a state in which a part of the belt assembly is hung on one pulley, the disk members are separated from each other at an interval that allows the other part of the belt assembly to be hung on the other pulley, and the belt assembly given the prior belt assembly distance between the disk member is Chijimisema by the multiplying passed the disk member moving means to approach each other both disk member after providing the disc member moving means Keep in shaping the pass shape over, distance between the disk member is characterized in that a holding means for canceling the retention of the belt assembly after being Chijimisema by the disk member moving means.
[0010]
In the support device of the present invention, at least one of the pulleys is constituted by a pair of disk members separated from each other by the disk member moving means. When the belt assembly is handed over, first, both disk members are moved away from each other to expand the interval between the V grooves. Then, the belt assembly is hung between the separated disk members. At this time, the interval between the V-grooves is expanded, so that the belt assembly extending position along the pulley can be positioned near the shaft of the pulley, and the belt assembly is sufficiently slack (allowance). Can be given. Next, the belt assembly is pulled on the other pulley while being pulled. At this time, since there is sufficient slack in the belt assembly, the belt assembly can be passed over both pulleys very easily.
[0011]
Further, as described above, since the belt assembly is sufficiently slackened by the separation of the two disk members, the outer diameters of both pulleys can be made relatively large without hindering the spanning operation. Thus, for example, if the support device of the present invention is used in a belt assembly inspection device, the curved portion of the belt assembly along both pulleys is gently bent to concentrate the clearance between the elements on the curved portion. The belt assembly can be inspected with stable accuracy.
[0013]
Further, since the holding means shapes and holds the belt assembly in a predetermined spanning shape, the belt assembly located between the two disk members is arranged in the vicinity of the shaft before the interval between the two disk members is reduced. To a position along the outer periphery. Thereby, for example, it is possible to prevent the belt assembly from being sandwiched in the vicinity of the shaft between the two disk members, and a smooth transfer operation can be performed.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory front view showing the configuration of the present embodiment, FIG. 2 is an explanatory longitudinal sectional view of a driving pulley and a driven pulley, FIG. 3 is an explanatory view showing the operation of the holding means, and FIG. 4 is an explanation of the operation of the measuring means. FIG. 5 and FIG. 5 are explanatory views showing a part of a continuously variable transmission belt assembly.
[0015]
The apparatus 1 of the present embodiment shown in FIG. 1 is an inspection apparatus used for determining the quality of the belt assembly 2 by measuring the amount of deflection of the continuously variable transmission belt assembly 2 shown in FIG. It is. As shown in part in FIG. 5, the belt assembly 2 to be inspected includes a pair of endless metal rings 4, 5 in which a plurality of annularly stacked elements 3 are stacked with a plurality of plate-like rings. It is formed by being united together.
[0016]
First, the configuration of the inspection apparatus 1 will be described. In FIG. 1, reference numeral 6 denotes belt rotation support means which is a support device of the present invention for supporting and rotating the belt assembly 2. As will be described later, the belt rotation support means 6 includes a drive pulley 7 and a driven pulley 8, and supports the belt assembly 2 by spanning the pulleys 7 and 8. 9 is a holding means for shaping and holding the belt assembly 2 in a hanging shape when the belt assembly 2 is hung to the pulleys 7 and 8, and 10 is a belt assembly 2 hung on the pulleys 7 and 8. It is tension applying means for applying a predetermined tension. Reference numeral 11 denotes pressing means for pressing the belt assembly 2 between the pulleys 7 and 8 with a predetermined pressing force to bend the belt assembly 2, and 12 is a measurement for measuring the amount of bending by the pressing means 11. Means.
[0017]
As shown in FIG. 2, the belt rotation support means 6 includes a motor 13 that is a drive means for driving the drive pulley 7. A rotation shaft 14 of the drive pulley 7 is rotatably supported by a first bearing housing 15 via a bearing 16, and rotation of the motor 13 is transmitted via a plurality of gears 17. A V groove 18 corresponding to the belt assembly 2 is formed on the outer periphery of the drive pulley 7. The driven pulley 8 includes a hollow first rotating shaft 18 and a second rotating shaft 19 inserted into the first rotating shaft 18. A first disk member 20 is connected to the tip of the first rotating shaft 18, and a second disk member 21 is connected to the tip of the second rotating shaft 19. The first disk member 20 and the second disk member 21 have V grooves 22 formed by both inner wall surfaces facing each other. In the present embodiment, as shown in FIG. 1, the outer diameters of the drive pulley 7 and the driven pulley 8 are both relatively large, and the belt assembly 2 is attached to the drive pulley 7 and the driven pulley 8. The bending diameter of the bending portion 23 that bends along both the pulleys 7 and 8 when set over is set to be equal to the maximum diameter when set over a pulley of a continuously variable transmission (not shown). .
[0018]
As shown in FIG. 2, the first rotating shaft 18 is rotatably supported by the second bearing housing 24 via a bearing 25. The second bearing housing 24 is slidably supported along a guide rail 27 (see FIG. 1) extending in the vertical direction on the frame 26.
[0019]
As shown in FIG. 2, the second rotary shaft 19 is provided so as to be slidable in the forward / backward direction along the inside of the first rotary shaft 18, and when the second rotary shaft 19 moves forward, the second disc The member 21 is separated from the first disk member 20 as indicated by the phantom line in FIG. 2, and the interval between the V grooves 22 is expanded. The second rotating shaft 19 is rotatably connected via a rotary joint 31 to a piston rod 30 of a cylinder 29 which is a disk member moving means integrally connected to a second bearing housing 24 via a connecting member 28. The cylinder 29 is driven to advance and retreat.
[0020]
As shown in FIG. 1, the holding means 9 includes a contact member 32 provided so as to be movable up and down at a position directly above the drive pulley 7, a guide rail 33 for guiding the corresponding contact member 32, and the corresponding contact member 32. The cylinder 34 is driven up and down. The abutting member 32 includes a curved portion abutting surface 35 corresponding to the curved portion 23 of the belt assembly 2 hung on the driving pulley 7, and the belt assembly 2 hung on the driving pulley 7 and the driven pulley 8. And a chord part abutting surface 37 for abutting the chord part 36 located between the pulleys 7 and 8 and shaping the chord part 36 into a linear state.
[0021]
As shown in FIG. 1, the tension applying means 10 includes a cylinder 39 including a piston rod 38 connected to the second bearing housing 24. When the cylinder 39 applies a predetermined tensile load to the second bearing housing 24 via the piston rod 38, tension is applied to the belt assembly 2 spanned between the drive pulley 7 and the driven pulley 8.
[0022]
As shown in FIG. 1, the pressing means 11 includes a support plate 40 fixed to the frame 26, a slide frame 42 slidably supported on the support plate 40 via a guide rail 41, And a pressing block 43 provided on the sliding frame 42. A weight 45 having a predetermined weight is connected to the sliding frame 42 via a wire 44. The weight 45 is suspended via a pulley 46 that is pivotally supported by the support plate 40 and is provided in a state in which unnecessary shaking is prevented by a guide member 47. When the weight 45 moves downward under its own weight, the sliding frame 42 is advanced in the direction of the belt assembly 2 via the wire 44. The sliding frame 42 is connected to the piston rod 49 of the balance cylinder 48, and can move to the retracted position against the load of the weight 45 by the balance cylinder 48.
[0023]
As shown in FIG. 4A, the pressing block 43 has a substrate 50 fixed to the base end thereof. The substrate 50 is supported by a support member 51 connected to the sliding frame 42 through a guide rod 52 so as to be able to advance and retract. Further, the substrate 50 is supported by the support member 51 by being biased by the spring 53 in the direction in which the pressing block 43 is advanced.
[0024]
Further, the sliding frame 42 includes a contact 54 that comes into contact with one end portion of the substrate 50 when the substrate 50 is retracted, and detects contact between the contact 54 and the substrate 50. A contact detection sensor 55 is provided. As shown in FIG. 4B, the contact detection sensor 55 is configured such that when the pressing block 43 contacts the string portion 36 of the belt assembly 2 and the substrate 50 is retracted against the bias by the spring 53, The contact between the contact 54 and the substrate 50 is detected, and the position is used as a reference when measuring the deflection amount by the measuring means 12.
[0025]
As shown in FIGS. 1 and 4A, the measuring means 12 is a distance sensor 56 fixedly supported by the support plate 40, and the tip of the contactor 57 of the distance sensor 56 is a sliding frame. 42 abuts one end of the support member 51. Accordingly, the contact 57 of the distance sensor 56 is expanded and contracted following the sliding of the sliding frame 42, and the distance sensor 56 uses the expansion / contraction distance of the contact 57 as the amount of bending of the string portion 36 of the belt assembly 2. To detect.
[0026]
Next, the operation of the inspection apparatus 1 of this embodiment will be described. First, as shown in FIG. 1, the belt assembly 2 is wound around the drive pulley 7 and the driven pulley 8. At this time, the second disk member 21 of the driven pulley 8 is moved away from the first disk member 20 by driving the cylinder 29 as indicated by a virtual line in FIG. Thereby, the V groove 22 of the driven pulley 8 is expanded. In this state, as shown in FIG. 3A, the belt assembly 2 is hung on the driven pulley 8, and then the belt assembly 2 is hung upward and hung on the driving pulley 7. As shown in FIG. 2, the belt assembly 2 hung on the driven pulley 8 is positioned close to the first rotation shaft 18 by expanding the V groove 22, and as shown in FIG. Further, it is stretched between the driving pulley 7 and the driven pulley 8 with sufficient slackness. As a result, it is possible to very easily carry out the belt assembly 2 over the drive pulley 7 and the driven pulley 8.
[0027]
Subsequently, as shown in FIG. 3B, the contact member 32 of the holding means 9 is lowered by driving the cylinder 34. As a result, the belt assembly 2 hung around the driving pulley 7 and the driven pulley 8 with a slack is shaped and held in a shape corresponding to the shape supported by the driving pulley 7 and the driven pulley 8. Then, as shown in FIG. 2, the second disk member 21 of the driven pulley 8 is moved closer to the first disk member 20 by driving the cylinder 29. As a result, the V groove 22 of the driven pulley 8 is narrowed, and the belt assembly 2 is stretched over the drive pulley 7 and the driven pulley 8 with the slack removed. Since the belt assembly 2 is already separated from the first rotating shaft 18 of the driven pulley 8 by the holding means 9 at this time, even if the distance between the disk members 20 and 21 is reduced, both the disk members 20 , 21 is not caught in the vicinity of the axis line of the driven pulley 8 and is accurately hung on the outer peripheral side. Then, as shown in FIG. 1, the contact member 32 of the holding means 9 is raised by the drive of the cylinder 34, and the string portion 36 of the belt assembly 2 stretched over the drive pulley 7 and the driven pulley 8 is exposed. .
[0028]
Subsequently, the second bearing housing 24 of the driven pulley 8 is pulled downward by the cylinder 39 of the tension applying means 10, and accordingly, tension is applied to the belt assembly 2 that is stretched over the pulleys 7 and 8. The In this state, the drive pulley 7 is driven to rotate by the motor 13, and the rotation is stopped after the belt assembly 2 is adapted to rotate smoothly.
[0029]
Next, as shown in FIG. 4B, the balance cylinder 48 of the pressing means 11 extends the piston rod 49 to transmit the load of the weight 45 (shown in FIG. 1) to the sliding frame 42. As a result, first, the sliding frame 42 moves forward so that the pressing block 43 contacts the string portion 36 of the belt assembly 2, and the contact 54 of the contact detection sensor 55 contacts the substrate 50 of the pressing block 43. Thereafter, the sliding frame 42 is further advanced by the load applied from the weight 45, and the pressing block 43 presses the string portion 36 of the belt assembly 2. 4B, when the chord portion 36 of the belt assembly 2 is bent, the contact 57 of the distance sensor 56 of the measuring means 12 slides on the sliding frame 42. It is extended following. At this time, the extension distance of the contact 57 is detected by the distance sensor 56, and the detection distance of the distance sensor 56 from the contact detection position of the contact detection sensor 55 is the amount of bending of the string portion 36 of the belt assembly 2. Detected. Then, it is determined whether or not the clearance between the elements 3 (see FIG. 5) of the belt assembly 2 is appropriate from the amount of bending at this time, and whether the belt assembly 2 is good or bad is determined.
[0030]
In the present embodiment, the driven pulley 8 is configured to be divided by the first disk member 20 and the second disk member 21, but not shown, but the drive pulley 7 is connected to the first disk member 20 and the second disk member. You may comprise so that a division | segmentation is possible with the member 21, and you may comprise the driven pulley 8 and the drive pulley 7 so that division | segmentation is possible.
[0031]
In the present embodiment, the measurement means 12 measures the amount of bending of the belt assembly 2 after the rotation of the belt assembly 2 is stopped. However, the belt assembly 2 is adapted to rotate smoothly. After that, the amount of deflection of the belt assembly 2 may be measured by the measuring means 12 while maintaining the state where the belt assembly 2 is rotated.
[Brief description of the drawings]
FIG. 1 is an explanatory front view showing an apparatus according to an embodiment of the present invention.
FIG. 2 is an explanatory longitudinal sectional view of a driving pulley and a driven pulley in the present embodiment.
FIG. 3 is an explanatory view showing the operation of the holding means in the present embodiment.
FIG. 4 is an operation explanatory view of a measuring unit in the present embodiment.
FIG. 5 is an explanatory view showing a part of a continuously variable transmission belt.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 2 ... Belt assembly, 3 ... Element, 4, 5 ... Metal ring, 6 ... Belt rotation support means (support apparatus), 7 ... Drive pulley, 8 ... Drive pulley, 9 ... Holding means, 10 ... Tension applying means, 11 ... Pressing means, 12 ... Measuring means, 13 ... Motor (driving means), 20, 21 ... Disk member, 29 ... Cylinder (disk member moving means).

Claims (1)

In a belt assembly support device comprising a pair of pulleys that span and support a belt assembly for a continuously variable transmission formed by bundling a plurality of elements arranged in an annular shape by an endless metal ring,
At least one of the pulleys includes a pair of disk members facing each other in the axial direction so as to be separated from each other, and a V-groove is formed between the disk members to span the belt assembly.
In a state in which a part of the belt assembly is hung on one pulley, the disk members are separated from each other at an interval that allows the other part of the belt assembly to be hung on the other pulley, and the belt assembly is placed on both pulleys. Is provided with a disk member moving means for bringing both disk members close to each other after the
Prior to the distance between the two disk members being reduced by the disk member moving means, the belt assembly is shaped and held in a predetermined spanning shape, and the distance between the two disk members is reduced by the disk member moving means. A support device for a belt assembly comprising a holding means for releasing the holding of the belt assembly later .

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