JP2002090101A - Tire width measuring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tire width measuring device capable of reducing the labor of tire width measuring work, preventing the deterioration of measurement precision, and preventing the wrong reading of a measurement value by a worker and the reading error. SOLUTION: Locks 54A and 54B are slid on a rail guide 44 supported by a body frame, and each lock 54A and 54B is brought into contact with the side part of an OR tire 14. Since moving tables 48A and 48B are in contact with the rail guide 44 through a ball or roller, the frictional forces of the both are reduced to prevent the wear of the rail guide 44. The space between the locks 54A and 54B is measured by a digital tape measure 56 to measure the tire width.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire width measuring apparatus for measuring a tire width of a large tire such as a tire for construction vehicles (OR tire).

[0002]

2. Description of the Related Art General construction vehicle tires (OR tires).
As an instrument for measuring the tire width of large tires such as
For example, a total length of 2100 mm, a length of 1000 mm,
Large calipers weighing as much as 10 kg are used.

Since it is difficult to measure by such a large-sized caliper with one worker, the measurement is performed by three persons. That is, two workers support both ends of the caliper, and the other person moves the caliper to read the scale. Therefore, the measurement work of the tire width requires a large amount of labor.

Further, in the calipers conventionally used, the slide is of a metal contact type, and there is a problem that play is immediately generated when the liner is worn.
In addition, since the length of the tool is long and heavy, there is a problem in that the balance of the calipers is lost and the measurement position is displaced, and the measurement accuracy is reduced.

Further, since the conventional caliper is of a graduated type, there is a problem that the operator may read the scale incorrectly or may have a reading error.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in consideration of the above facts, and has been made to reduce the labor required for tire width measurement work, to prevent a decrease in measurement accuracy, to prevent an operator from erroneously reading a measured value, It is an object to provide a tire width measuring device capable of preventing a reading error.

[0007]

According to a first aspect of the present invention, there is provided a tire width measuring apparatus for measuring a tire width, comprising: a support member; a linear guide member attached to the support member; A first member that moves on the guide member in the longitudinal direction of the guide member and contacts one side portion of the tire.
And a second contact member that moves on the guide member in the longitudinal direction of the guide member and contacts the other side portion of the tire, and a distance between the first contact member and the second contact member. And display means for displaying.

Next, the operation and effect of the tire width measuring device according to the first aspect will be described.

At the time of tire width measurement, the guide member is supported by a support member such that the longitudinal direction is parallel to the tire axial direction. Then, the first contact member and the second contact member are moved on the guide member in the longitudinal direction of the guide member (tire axial direction) so as to contact both side portions of the tire.

When the first contact member and the second contact member contact both side portions of the tire, the display means reads the distance between the first contact member and the second contact member and measures the tire width. .

As described above, according to the tire width measuring device, since the guide member is supported by the support member, there is no need for the operator to support the guide member when measuring the tire width. Therefore, unlike the related art, three workers are not required, and one worker can sufficiently perform the measurement work.
Labor can be reduced.

The crown width of a tire may be measured by using the tire width measuring device according to the present invention.

In the tire width measuring device according to the second aspect,
The support member is provided on a floor surface.

Next, the operation and effect of the tire width measuring device according to the second aspect will be described.

If the support member is installed on the floor, the guide member can be easily supported and fixed.

In the tire width measuring device according to the third aspect,
The guide member is provided so as to be movable on the support member in a vertical direction.

Next, the operation and effect of the tire width measuring device according to the third aspect will be described.

The height of the guide member can be adjusted according to the size of the tire to be measured since the guide member is provided so as to be movable on the support member in the vertical direction.

In the tire width measuring device according to the fourth aspect,
The first contact member and the second contact member are formed on a movable table that moves on the guide member in the axial direction of the guide member, and on the movable table along a vertical plane that is substantially perpendicular to the longitudinal direction of the guide member. And a contact member main body which is provided to be liftable and comes into contact with the side portion of the tire.

Next, the operation and effect of the tire width measuring device according to the fourth aspect will be described.

When measuring the tire width of the tire, the contact member main body can be lifted along a vertical plane substantially perpendicular to the axial direction of the guide member, so that the position of the contact member main body can be finely adjusted. Thus, the contact member main body can be accurately adjusted to the measurement point on the side portion of the tire.

On the other hand, when the tire width is not measured, there is a problem that the contact member body takes up space. However, as described above, the contact member body is lifted along the vertical plane and stored at an appropriate position. Thus, the space problem can be solved.

In the tire width measuring device according to the fifth aspect,
The moving table is attached to the guide member via a ball or a roller so as to be movable in the axial direction of the guide member.

Next, the operation and effect of the tire width measuring device according to the fifth aspect will be described.

Since the movable table is mounted on the guide member via balls or rollers so as to be movable along the axial direction of the guide member, when the movable table moves on the guide member, rolling friction is generated between the two. Will be. For this reason, the wear of the guide member can be prevented as much as possible as compared with the case of moving the slide table of the caliper in which the slide table and the guide member are in surface contact as in the related art. As a result, the tire width can be accurately measured without rattling of the movable table.

[0026] Further, since the movable table is mounted on the guide member via a ball or a roller so as to be movable along the axial direction of the guide member, the movable table can be moved smoothly.

In the tire width measuring device according to the sixth aspect,
A tire width measuring device for measuring a tire width, comprising a support member, a linear guide member attached to the support member, and a first contact member fixed to the guide member and in contact with one side portion of the tire. And a display that moves on the guide member in the longitudinal direction of the guide member and displays a second contact member that contacts the other side portion of the tire, and a distance between the first contact member and the second contact member. And means.

Next, the operation and effect of the tire width measuring device according to claim 6 will be described.

At the time of tire width measurement, the guide member is supported by the support member so that the longitudinal direction is parallel to the tire axial direction. Then, one side portion of the tire is brought into contact with the first contact member, and the second contact member is moved on the guide member along the longitudinal direction of the guide member (axial direction of the tire) so that the other side portion of the tire is moved. Contact.

When the second contact member comes into contact with the other side of the tire, the display means reads the distance between the first contact member and the second contact member and measures the tire width.

As described above, according to the tire width measuring device, since the guide member is supported by the support member, there is no need for the operator to support the guide member when measuring the tire width. Therefore, unlike the related art, three workers are not required, and one worker can sufficiently perform the measurement work.
Labor can be reduced.

The crown width of a tire may be measured by using the tire width measuring device according to the present invention.

In the tire width measuring device according to the seventh aspect,
The support member is provided on a floor surface.

Next, the operation and effect of the tire width measuring device according to the seventh aspect will be described.

If the support member is installed on the floor, the guide member can be easily supported and fixed.

In the tire width measuring device according to the eighth aspect,
The guide member is provided so as to be movable on the support member in a vertical direction.

Next, the operation and effect of the tire width measuring device according to the eighth aspect will be described.

The height of the guide member can be adjusted according to the size of the tire to be measured since the guide member is provided so as to be movable on the support member in the vertical direction.

In the tire width measuring device according to the ninth aspect,
The first contact member is provided on a fixed base fixed on the guide member, and is rotatably provided on the fixed base along a vertical plane substantially perpendicular to the longitudinal direction of the guide member. The contact member main body and the second contact member are formed on a movable table that moves on the guide member in the axial direction of the guide member, and a vertical plane that is substantially perpendicular to the longitudinal direction of the guide member on the movable table. And a contact member main body which is provided so as to be able to lift along and is in contact with the side portion of the tire.

Next, the operation and effect of the tire width measuring device according to the ninth aspect will be described.

When measuring the tire width of the tire, the contact member main body can be lifted along a vertical plane substantially perpendicular to the axial direction of the guide member, so that the position of the contact member main body can be finely adjusted. Thus, the contact member main body can be accurately adjusted to the measurement point on the side portion of the tire.

On the other hand, when the tire width is not measured, there is a problem that the contact member body takes up a space. However, as described above, the contact member body is lifted along the vertical plane and stored at an appropriate position. Thus, the space problem can be solved.

According to a tenth aspect of the present invention, in the tire width measuring device, the movable table is attached to the guide member via a ball or a roller so as to be movable along the axial direction of the guide member.

Next, the operation and effect of the tire width measuring device according to the tenth aspect will be described.

Since the movable table is mounted on the guide member via balls or rollers so as to be movable in the axial direction of the guide member, when the movable table moves on the guide member, rolling friction occurs between the two. Will be. For this reason, the wear of the guide member can be prevented as much as possible as compared with the case of moving the slide table of the caliper in which the slide table and the guide member are in surface contact as in the related art. As a result, the tire width can be accurately measured without rattling of the movable table.

In addition, since the movable table is movably attached to the guide member via balls or rollers along the axial direction of the guide member, the movable table can be moved smoothly.

[0047] In the tire width measuring device according to the eleventh aspect, the display means is a digital type display means for digitally displaying an interval between the first contact member and the second contact member.

Next, the operation and effect of the tire width measuring device according to the eleventh aspect will be described.

Since the digital display means measures the distance between the first contact member and the second contact member and digitally displays the measured distance between the first contact member and the second contact member, the operation of the digital display means is smaller than that in the conventional case where the calipers are read. It is possible to prevent a reading error by an operator and prevent a reading error by an operator.

According to a twelfth aspect of the present invention, there is provided a tire width measuring device, wherein wheels are attached to the bottom of the support member so that the support member can freely move on the floor surface.

Next, the operation and effect of the tire width measuring device according to the twelfth aspect will be described.

Since the wheels are attached to the bottom of the support member, the tire width measuring device can be moved freely. For this reason, the measurement operation of the tire width can be performed efficiently.

[0053]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a tire width measuring device according to an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a rear view of the tire width measuring device, and FIG. 2 is a side view of the tire width measuring device.

As shown in FIGS. 1 and 2, the tire width measuring device 10 has a main body frame 12 as a support member.

The main body frame 12 is composed of two vertical members extending substantially perpendicularly (in the direction of arrow A in FIG. 1) to the tire axial direction of the OR tire 14 (see FIG. 3) placed on the floor. 16A and 16B. This vertical member 16A,
In the vicinity of the upper end and the lower end of 16B, a vertical member 16A,
Two horizontal members 18A, 1A extending in a direction substantially perpendicular to arrow 16B (arrow B direction in FIG. 1, the same direction as the tire axis direction).
8B are respectively attached. Further, two reinforcing members 20 are provided substantially at the centers of the two horizontal members 18A and 18B.
A and 20B are attached in parallel to the vertical members 16A and 16B, respectively.

On the other hand, the lower ends of the vertical members 16A and 16B are substantially perpendicular to the vertical members 16A and 16B, and are also substantially perpendicular to the horizontal members 18A and 18B (in the direction indicated by the arrow C in FIG. 2). ) Are attached to the bases 22A and 22B, respectively. Wheels 24 are attached to both ends of the bases 22A and 22B in the direction of arrow C in FIG. 2 so that the main body frame 12 can move on the floor.

Although not shown, each of the bases 22A, 22A
In B, at least one wheel 24 is preferably provided with a rotation stopping member for stopping the rotation of the wheel 24. Thereby, the tire width measuring device 10 can be moved on the floor to an appropriate position, and the tire width measuring device 10 can be fixed at that position.

On the other hand, bearings 26A and 26B are provided at the upper ends of the vertical members 16A and 16B, respectively, and a rotary shaft 28 is rotatably attached to the bearings 26A and 26B. Disc-shaped members 30A, 30B are fixed to the outer periphery of the rotation shaft outside the bearings 26A, 26B, and the disc-shaped members 30A, 30B rotate together with the rotation shaft 28. A handle 32 for rotating the rotating shaft 28 is attached to one end of the rotating shaft 28.

Each of the vertical members 16A and 16B has a direction substantially perpendicular to the tire axial direction (the vertical members 16A and 16B).
Bases 34A and 34B which move in the axial direction of B) are respectively attached.

That is, through holes 36A and 36B are formed substantially at the centers of the bases 34A and 34B, respectively.
Vertical members 16A, 16B penetrate through the through holes 36A, 36B. Fixing screws 38A and 38B are screwed on the side surfaces of the bases 34A and 34B, respectively.
The bases 34A, 34B are fixed to the vertical members 16A, 16B by tightening the A, 38B and pressing the distal ends of the fixing screws 38A, 38B against the side surfaces of the vertical members 16A, 16B. .

Further, semicircular rings 40A and 40B are formed on the upper surfaces of the bases 34A and 34B, respectively. This ring 40A, 40B has a disk-shaped member 30A,
One ends of wires 42A and 42B wound around the outer periphery of 30B are attached, and the rotating shaft 28 is rotated by turning the handle 32 so that the wires 42A and 42B are wound around the disc-shaped members 30A and 30B, or are rotated. When the shaft 28 is rotated in the reverse direction, the wires 42A, 42
B is unwound from the outer periphery of the disc-shaped members 30A, 30B,
The heights of the bases 34A and 34B can be adjusted.

Thus, the height of the bases 34A and 34B can be made to correspond to the diameter of the OR tire 14 to be measured.

A rail guide 44 extends between the bases 34A and 34B. This rail guide 44
Extends along the tire axial direction of the OR tire 14 placed on the floor, and has concave portions 46A on its upper and lower surfaces.
46B are formed.

The moving tables 48A, 48B are inserted into the recesses 46A, 46B via balls or rollers (both not shown).
B is attached, and the movable bases 48A and 48B can slide on the front surface of the rail guide 44 in the axial direction thereof (the same direction as the tire axial direction). In this way, the moving tables 48A and 48B are brought into rolling contact with the rail guides 44 via balls or rollers, thereby reducing the frictional force with the rail guides 44 and preventing the rail guides 44 from being worn as much as possible.

As the rail guide 44, a commercially available LM guide is used.

It is to be noted that only one of the left and right movable tables 48A and 48B may be fixed on the rail guide 44 and the other may be movable with respect to the rail guide 44.

On the other hand, as shown in FIG.
A and 48B are provided with bearings 50 at both ends in the tire axial direction on the front side.
A and 50B are respectively attached. Shafts 52A and 52B are rotatably mounted between the bearings 50A and 50B, respectively, along the tire axial direction.

Each of the shafts 52A and 52B is attached to the shaft 54A so as to be substantially perpendicular to the rail guide 44.
54B are respectively attached.

For this reason, each of the shafts 54A and 54B rotates together with the shafts 52A and 52B along a vertical plane substantially perpendicular to the tire axial direction (the longitudinal direction of the rail guide 44, the direction of arrow B in FIG. 3). (Lifting).

A commercially available digital tape measure 56 is attached to the handles 54A and 54B. That is, one end of the tape measure 58 is fixed to one of the bolts 54B, and the other of the knobs 54A is provided with a casing 60 having a digital display unit 62.
The tape measure 58 wound and housed inside the casing 60 is unwound. Conversely, if the interval between each of the 54A and 54B is closed, the tape measure 58
Is wound back into the casing 60.

According to the digital tape measure 56, the unwinding amount of the tape measure 58 unwound from the casing 60 is measured and digitally displayed on the digital display 62.

The digital display section 62 has a configuration in which the digital display returns to zero by pressing a reset button (not shown), so-called zero adjustment is possible.

Here, since the unwinding amount of the tape measure 58 is digitally displayed, it is excellent in that an operator does not mistakenly read or an error in reading is caused by the operator, but the present invention is not limited to the digital display. Alternatively, the operator may directly read the unwind amount of the tape measure 58 from a scale or the like.

Next, the tire width measuring device 10 of the present embodiment
A method for measuring a tire width using the method will be described. The measurement of the tire width of the OR tire 14 is performed by the following method.

First, as shown in FIG. 1 and FIG. 2, the operator operates the bases 34A, 34B so that the tip of each of the bolts 54A, 54B faces the center of the OR tire 14 to be measured.
Loosen the fixing screws 38A and 38B, and turn the bundle 32 to adjust the height of each base 34A and 34B.

When the heights of the bases 34A and 34B are adjusted, the fixing screws 38A and 38B are tightened, and the bases 34A and 34B are adjusted.
34B is fixed so as not to move with respect to the vertical members 16A and 16B.

Further, the operator rotates each of the bolts 54A, 54B along a vertical plane substantially perpendicular to the tire axial direction so that the orientation of each of the bolts 54A, 54B matches the measurement point of the OR tire 14. adjust.

[0078] As shown in FIG.
When the adjustment of the direction of B is completed, each shaft 52A, 52
Tighten hexagon socket head bolts (not shown) near B to fix the positions of the fasteners 54A and 54B.

Next, the moving tables 48A, 48B are slid slowly on the rail guide 44 in the tire axial direction until the two handles 54A, 54B come into contact with each other. The reset button of the digital tape measure 56 is pressed to perform zero adjustment.

Next, again, both moving tables 48A and 48B
Tire 1 that slides on rail guide 44 and measures
The interval between the two tools 54A and 54B is made larger than the tire width of No. 4.

Next, O for measuring the tire width measuring device 10
Move toward the R tire 14 and place the bulges of the side portions of the OR tire 14 at the largest portions 54A and 54B.
Stops at a position where the vehicle can reach the vehicle, and fixes the wheels 24.

When the crown width of the OR tire 14 is measured, the tire width measuring device 10 is moved to such a position that both the bolts 54A and 54B are in contact with the crown shoulder of the OR tire 14.

Next, as shown in FIG.
8A and 48B are moved on the rail guide 44 in the axial direction of the tire (the directions indicated by arrows E and D in FIG. 4), and both the bolts 54A and 54B are brought into contact with both side portions of the OR tire 14.

Next, both the wheels 54A and 54B are ORed.
The digital value displayed on the digital display unit 62 of the digital tape measure 56 is read in a state where the tire 14 is in contact with the side portion of the tire 14, and the tire width is measured.

As described above, the following specific actions and effects can be obtained by measuring the tire width of the OR tire 14 using the tire width measuring apparatus 10 of the present invention.

First, since the rail guides 44 are supported by the main body frame 12, it is not necessary for the operator to hold the rail guides 44, and only the movable members 54A and 54B need to be moved, thereby reducing the labor. it can.

Since the wheels 24 are attached to the main body frame 12, the worker can easily move the tire width measuring device 10 freely.

Second, since the moving tables 48A and 48B are mounted on the rail guides 44 via balls or rollers, the frictional force between the moving tables 48A and 48B and the rail guides 44 can be reduced, and Wear can be prevented as much as possible. As a result, the moving tables 48A and 48B and the
The tire width can be accurately measured without rattling of the rail guides 4A and 54B.

Third, since the tire width is digitally displayed, it is possible to prevent the operator from reading the caliper scale incorrectly as in the prior art, or from causing a reading error by the operator.

[0090]

According to the tire width measuring apparatus of the present invention, the labor of the tire width measuring operation is reduced, the measurement accuracy is prevented from being lowered, and the reading error and the reading error of the measured value by the operator are prevented. be able to.

[Brief description of the drawings]

FIG. 1 is a rear view of a tire width measuring device according to an embodiment of the present invention.

FIG. 2 is a side view of the tire width measuring device according to one embodiment of the present invention.

FIG. 3 is a plan view of the tire width measuring device according to one embodiment of the present invention.

FIG. 4 is a state diagram when a tire width is measured by the tire width measuring device according to one embodiment of the present invention.

[Explanation of symbols]

Reference Signs List 10 tire width measuring device 12 main body frame (supporting member) 14 OR tire (tire) 24 wheel 44 rail guide (guide member) 48A, 48B moving table 54A, 54B screw (contact member main body) 56 digital tape measure (digital display means) )

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) 2F061 AA19 BB05 CC25 DD09 DD22 DD27 FF09 FF11 FF33 FF46 FF58 FF64 FF73 FF81 GG04 GG36 HH02 JJ11 JJ72 LL13 LL22 RR12 RR21 RR27 RR35 VV03 VV07 V22 V09

Claims (12)

[Claims] 1. A tire width measuring device for measuring a tire width, comprising: a support member; a linear guide member attached to the support member; and a movable member that moves on the guide member in a longitudinal direction of the guide member. ,
A first contact member that contacts one side portion of the tire, and moves on the guide member in a longitudinal direction of the guide member,
A tire, comprising: a second contact member that contacts the other side portion of the tire; and a display unit that displays an interval between the first contact member and the second contact member. Width measuring device. 2. The tire width measuring device according to claim 1, wherein the support member is installed on a floor surface. 3. The tire width measuring device according to claim 1, wherein the guide member is provided movably on a support member in a vertical direction. 4. The first contact member and the second contact member include a movable table that moves on the guide member in an axial direction of the guide member, and the movable table includes a movable table that moves with respect to a longitudinal direction of the guide member. The contact member main body, which is provided so as to be able to lift along a substantially vertical vertical plane, and is in contact with a side portion of the tire, is constituted by: Tire width measuring device. 5. The tire width measurement according to claim 4, wherein the movable table is movably attached to the guide member via a ball or a roller along an axial direction of the guide member. apparatus. 6. A tire width measuring device for measuring a tire width, comprising: a support member; a linear guide member attached to the support member; and one side portion of the tire fixed to the guide member. A first contact member that contacts, moving on the guide member in a longitudinal direction of the guide member,
A tire, comprising: a second contact member that contacts the other side portion of the tire; and a display unit that displays an interval between the first contact member and the second contact member. Width measuring device. 7. The tire width measuring device according to claim 6, wherein the support member is installed on a floor surface. 8. The tire width measuring device according to claim 6, wherein the guide member is provided movably on a support member in a vertical direction. 9. The first contact member includes a fixed base fixed on a guide member, and the first contact member can be lifted along a vertical plane substantially perpendicular to a longitudinal direction of the guide member on the fixed base. A contact member main body that is provided and is in contact with a side portion of the tire; the second contact member is a movable table that moves on the guide member in an axial direction of the guide member; And a contact member main body which is provided so as to be able to lift along a vertical plane substantially perpendicular to the longitudinal direction, and is in contact with a side portion of the tire.
The tire width measuring device according to any one of the above. 10. The moving table is attached to the guide member via a ball or a roller so as to be movable along the axial direction of the guide member.
The tire width measuring device according to 1. 11. The display device according to claim 1, wherein the display unit is a digital display unit that digitally displays an interval between the first contact member and the second contact member. Item 2. The tire width measuring device according to item 1. 12. The vehicle according to claim 1, wherein a wheel is attached to a bottom portion of the support member so that the support member can freely move on a floor surface. Tire width measuring device.