JP6567388B2 - Tire mounting system - Google Patents

Description

  The present invention relates to a tire mounting apparatus used for mounting a tire on a tire testing apparatus.

  As a tire mounting apparatus used for mounting a tire on a tire testing apparatus, an arm composed of three links sequentially connected by a hinge so as to be swingable in a horizontal direction and a base of the arm are supported so as to be swingable in a horizontal direction. There is known a tire mounting device including a lifting device that moves a base up and down (for example, Patent Document 1).

  Here, the tire mounting device supports the tire at the tip of the arm by inserting the cylindrical portion at the tip of the link on the most tip side of the arm into the center bore of the tire. The central link is configured to be extendable and contractible in the longitudinal direction.

  And, the tire mounting using this tire mounting device is such that the center bore of the tire faces the spindle of the tire testing device, and the link at the tip of the arm and the link at the center are in a straight line state. After operating the arm up and down and swinging of each link of the arm, the center link is extended to bring the tip of the cylindrical part inserted in the center bore of the tire close to the spindle, and in this state the tire is This is done by pushing

JP 2004-205393 A

  According to the tire mounting device for supporting the tire by the arm by inserting the tip of the arm into the tire center bore as described above, the tire center bore and the arm are aligned correctly on the same axis, and then the tip of the arm is aligned. The troublesome work of inserting the tire into the center bore of the tire is required. Also, if you do not have a mechanism to extend the tip of the arm and insert the tip into the center bore of the tire, you need to move the heavy tire and insert the tip of the arm into the center bore It becomes.

  Accordingly, the present invention has an object of facilitating the insertion work of the tip of the arm into the center bore of the tire in a tire mounting device that supports the tire by the arm by fitting the tip of the arm into the center bore of the tire. And

  In order to achieve the above object, the present invention provides a tire mounting system used for mounting a tire on a spindle of a tire testing device, and an arm that supports the tire in a state where a tip is inserted into a center bore of the tire. A movable floor on which tires are placed, a floor moving mechanism that moves the movable floor in a horizontal biaxial direction, an arm moving mechanism that moves the arm, and a form protruding from the tip of the arm. A detection sensor for detecting a distance to an object in the direction in at least three directions perpendicular to the axis of the arm having a smaller diameter than the provided arm, and a control unit are provided. Here, when the tire attachment is instructed in a state where the tire is placed on the movable floor so that the tip of the arm at the tire attachment position and the center bore face each other, the control means By controlling a floor moving mechanism, the distance sensor is at least 3 perpendicular to the axis of the arm to the inner peripheral surface of the center bore of the tire in the direction in which the tire approaches the tip of the arm. Based on the distance in at least three directions perpendicular to the axis of the arm to the inner peripheral surface of the center bore of the tire detected by the distance sensor after moving to a position where the distance in the direction can be detected, The arm moving mechanism is controlled to raise and lower the arm so that the arm and the center bore of the tire are coaxial, and the floor moving mechanism is controlled to control the movable floor. After moving in a direction perpendicular and horizontal to the axis of the arm, the floor moving mechanism is controlled to move the movable floor in a direction parallel to the tip of the arm and the axis so that the tire approaches the arm. The tip of the arm is inserted into the center bore of the tire, the floor moving mechanism is controlled, and the tip of the arm is inserted into the center bore of the tire so that the tip of the arm contacts the tip of the spindle, Alternatively, move closer.

  According to such a tire mounting system, the worker simply places the tire on the movable floor so that the tip of the arm at the tire mounting position and the center bore face each other, and the tip of the arm is positioned at the center of the tire. Can be inserted into the bore.

  Here, in such a tire mounting system, in the control means, the center is based on the distance in at least three directions perpendicular to the axis of the arm to the inner peripheral surface of the center bore of the tire detected by the distance sensor. A difference R-r between the radius R of the bore and the radius r of the arm is obtained as an adjustment distance, and the arm moving mechanism is controlled so that the axis of the tip of the arm is above the adjustment distance from the spindle axis. You may comprise so that the arm | tip fitted by the center bore | bore of a tire may be moved so that the front-end | tip of the said arm may contact | abut or adjoins the front-end | tip of the said spindle.

By doing in this way, even when the diameter of the center bore of the tire is larger than the diameter of the arm, the tip of the arm abuts the tip of the spindle so that the axis of the tire and the axis of the spindle are coaxial, or Can be close.
In a tire mounting system used for mounting a tire on a spindle of a tire testing device, an arm that supports the tire in a state where the tip is fitted and inserted into a center bore of the tire, a movable floor on which the tire is mounted, At least three directions from a floor moving mechanism that moves the movable floor in a horizontal biaxial direction, an arm moving mechanism that moves the arm, and an object that is fixed to the arm and is located around the arm. This includes a detection sensor for detecting the distance from the arm and a control means. Here, when the tire attachment is instructed in a state where the tire is placed on the movable floor so that the tip of the arm at the tire attachment position and the center bore face each other, the control means By controlling the floor moving mechanism, the distance sensor can detect the distance in the at least three directions to the inner peripheral surface of the wheel of the tire in the direction in which the tire approaches the tip of the arm. The arm and the wheel are coaxially moved based on the distance in the at least three directions to the inner circumferential surface of the wheel of the tire detected by the distance sensor. The moving mechanism is controlled to move the arm up and down, and the floor moving mechanism is controlled to move the movable floor in a direction vertical and horizontal to the axis of the arm. By controlling a moving mechanism, the movable floor is moved in a direction parallel to the tip and axis of the arm in a direction in which the tire approaches the arm, and the tip of the arm is inserted into a center bore of the tire, and the floor By controlling the moving mechanism, the arm whose tip is fitted in the center bore of the tire is moved so that the tip of the arm comes into contact with or close to the tip of the spindle.
Even with such a tire mounting system, the worker simply places the tire on the movable floor so that the tip of the arm at the tire mounting position and the center bore face each other, and the tip of the arm is attached to the center bore of the tire. It can be inserted into.

  Here, the tire mounting system as described above is provided with a storage chamber disposed at a position lower than the movable floor, and the arm moving mechanism can be moved to a position where the arm is stored in the storage chamber. The floor moving mechanism may be configured such that the arm can be accommodated below the floor when not in use by allowing the movable floor to move to a position where the movable floor covers the accommodation chamber.

  As described above, according to the present invention, in the tire mounting device for supporting the tire by the arm by inserting the tip of the arm into the center bore of the tire, it is easy to insert the tire at the tip of the arm into the center bore. can do.

It is a figure showing a tire testing device concerning an embodiment of the present invention. It is a figure which shows the structure of the tire mounting apparatus which concerns on embodiment of this invention. It is a figure which shows operation | movement of the tire mounting apparatus which concerns on embodiment of this invention. It is a figure which shows the structure in connection with the movable floor of the tire mounting apparatus which concerns on embodiment of this invention. It is a figure which shows operation | movement of the tire mounting apparatus which concerns on embodiment of this invention. It is a figure which shows operation | movement of the tire mounting apparatus which concerns on embodiment of this invention. It is a figure which shows the attachment operation | movement of the tire to the arm which concerns on embodiment of this invention. It is a figure which shows operation | movement of tire mounting to the spindle which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described.
FIG. 1a shows the appearance of the tire testing apparatus according to this embodiment.
As shown in the figure, the tire testing apparatus is roughly composed of a roller chamber 1, two tire chambers 2 arranged on the left and right sides of the roller chamber 1, and a movable floor mechanism 3 provided on the floor in front of each tire chamber 2. Is done.

As shown by opening the door of the tire chamber 2 in FIG. 1 b, each tire chamber 2 is provided with a tire mounting device 4 and a spindle 5 for mounting the tire 100.
Further, a roller 10 is disposed in the roller chamber 1, a part of the right side of the peripheral surface of the roller 10 is exposed to the right tire chamber 2, and a part of the left side of the peripheral surface of the roller 10 is the left tire chamber. 2 is exposed.

  Each spindle 5 is connected to a motor that rotates the spindle 5 and a torque meter that measures torque applied to the spindle 5. The roller 10 is connected to a motor that rotationally drives the roller 10 and a torque meter that measures torque applied to the roller 10. The tire testing apparatus also includes a moving mechanism that moves the spindle 5 to the left and right to press the tire 100 against the circumferential surface of the roller 10 and to separate the tire 100 from the roller 10.

  In such a tire testing apparatus, the tire 100 is tested by, for example, bringing the tire 100 attached and fixed to the spindle 5 of each tire chamber 2 into contact with the circumferential surface of the roller 10 disposed in the roller chamber 1. In this state, each torque is measured by each torque meter while controlling the rotation of the roller 10 and the tire 100 by each motor.

Hereinafter, the tire mounting device 4 installed in the tire chamber 2 will be described by taking the tire mounting device 4 in the left tire chamber 2 as an example.
In FIG. 2, the structure of the tire mounting apparatus 4 is shown.
2a1 shows the appearance of the tire mounting device 4 arranged in the left tire chamber 2, FIG. 2a2 shows the tire mounting device cross section along the horizontal cutting plane A in FIG. 2a1, and FIG. 2a3 shows the tire mounting by the vertical cutting plane B in FIG. 2a1. An apparatus cross section is shown.

  As shown in the figure, the tire mounting device 4 includes a motor 41, a ball screw 42 that is vertically driven and rotated by the motor 41 with the vertical direction as the rotation axis direction, a lifting unit 43, and a hollow cylindrical shape that has the vertical direction as the axial direction. A guide pipe 44 is used.

  Here, as shown in FIG. 2 a 4, the elevating part 43 is connected to a ball screw nut 431 screwed into the ball screw 42, an annular outer ring 432, a bridge part 433 that connects the ball screw nut 431 and the outer ring 432, and an outer ring 432. This is a member in which the arm 434 is integrated. The arm 434 is an arm 434 that extends horizontally from the outer ring 432, and has a shape bent in a “<” shape when viewed in the vertical direction. In addition, a spring 4341 for preventing the tire from falling off is provided near the tip of the arm 434 so as to be pulled into the arm 434 when a certain amount of force is applied. In addition, a distance sensor portion 4342 protruding in the axial direction is provided at the center of the tip of the arm 434.

  The ball screw 42 and the ball screw nut 431 are arranged so that the ball screw nut 431 is loosely inserted into the guide pipe 44, and is arranged coaxially with the guide pipe 44 inside the guide pipe 44. The outer ring 432 is an outer ring. The guide pipe 44 is loosely inserted into the guide pipe 44, and is arranged coaxially with the guide pipe 44 outside the guide pipe 44. The arm 434 extends horizontally from the outer ring 432 in a direction perpendicular to the axis of the guide pipe 44. It extends to. Further, the arm 434 has a shape of a “<” shape when viewed from above and below, and is bent counterclockwise when viewed from above.

  Next, the guide pipe 44 is provided with a guide slit 441 through which the bridge portion 433 is inserted. The bridge portion 433 connects the ball screw nut 431 and the external ring 432 horizontally through the guide slit 441.

  Here, as shown in FIG. 2a5, the guide slit 441 of the guide pipe 44 includes an upper and lower slit portion 4411 extending long in the vertical direction, a rotating slit portion 4412 extending in the circumferential direction, and an adjustment upper and lower slit extending short in the vertical direction. A portion 4413 is formed. The rotation slit portion 4412 extends from the position of the upper end of the upper and lower slit portions 4411 in the counterclockwise direction when viewed from above, and the adjustment upper and lower slit portions 4413 are counterclockwise when viewed from above the rotation slit portion 4412. It extends up and down with the clockwise side end as the lower end. The circumferential length of the rotation slit portion 4412 is such that the arm 434 forms an arc that rotates about 90 degrees about the rotation axis of the ball screw 42.

  Two guide slits 441 of the guide pipe 44 are provided at positions 180 degrees apart from the central angle in the circumferential direction. That is, in addition to the guide slit 441 shown in FIG. 2 a 1, another guide slit 441 is provided which is equivalent to the guide slit 441 rotated 180 degrees about the axis of the guide pipe 44.

  Next, as shown in FIG. 2a6, the distance sensor unit 4342 provided in the axial direction at the center of the tip of the arm 434 is connected to an object in the four directions perpendicular to the axial direction of the arm 434. There are provided four sensors 43421 for detecting the distance. Here, the four directions perpendicular to the axial direction of the arm 434 are directions perpendicular to both the vertical direction and the axial direction of the arm 434 and the vertical direction. That is, when the axial direction of the arm 434 is the left-right direction, the four directions perpendicular to the axial direction of the arm 434 are the up-down direction and the front-rear direction.

  Accordingly, as shown in FIG. 2a7, the distance sensor unit 4342 has the distance sensor unit 4342 in the state where the distance sensor unit 4342 is inserted into the inner side of the circular tube in parallel with the axis of the circular tube as viewed from the distance sensor unit 4342. The distance from the distance sensor unit 4342 to the inner peripheral surface of each circular pipe in the direction can be measured.

  In such a tire mounting device 4, the ball screw 42 and the ball screw nut 431 are rotated in the forward direction (rotation in the clockwise direction when viewed from above) when the rotation of the ball screw nut 431 is suppressed. When the ball screw nut 431 is moved upward, the ball screw nut 431 moves downward when the ball screw 42 is rotated in the reverse direction (counterclockwise rotation when viewed from above), and the ball screw nut 431 moves upward. When the ball screw 42 is rotated forward, the ball screw nut 431 rotates counterclockwise when viewed from above, and the ball screw nut 431 is prevented from moving downward. When the ball screw 42 is rotated in the reverse direction, the ball screw nut 431 is set to rotate clockwise as viewed from above. To have.

  Therefore, when the ball screw 42 is rotated forward by the motor 41 when the bridge portion 433 of the elevating portion 43 is inserted below the upper end of the upper and lower slit portions 4411 of the guide slit 441 as shown in FIG. As shown in FIG. 3a2, the rotation of the ball screw nut 431 is restrained by the contact between the bridge portion 433 and the upper and lower slit portions 4411. Therefore, the ball screw nut 431 moves upward, and as a result, the entire lifting / lowering portion 43 moves upward. Move to.

  Further, when the ball screw 42 is reversely rotated by the motor 41 when the bridge portion 433 of the elevating portion 43 is inserted above the lower end of the upper and lower slit portions 4411 of the guide slit 441, the ball screw nut 431 is moved downward. Accordingly, the entire lifting unit 43 moves downward.

  Next, as shown in FIG. 3 b 1, when the bridge portion 433 of the lifting / lowering portion 43 is inserted into the upper end of the upper / lower slit portion 4411 of the guide slit 441 or the rotation slit portion 4412, the motor 41 When the ball screw 42 is rotated forward, the upward movement of the ball screw nut 431 is suppressed by the contact between the bridge portion 433, the upper end of the upper and lower slit portions 4411 and the rotation slit portion 4412, and the rotation slit of FIG. As shown in the cross section of the horizontal cut surface passing through the portion 4412, rotation is not inhibited within the range of the rotation slit portion 4412. Therefore, within the range of the upper end of the upper and lower slit portions 4411 and the rotation slit portion 4412, the ball screw nut 431 rotates counterclockwise as viewed from above, and ascends accordingly. Entire section 43 rotates when viewed from above in the counterclockwise direction.

  When the ball screw 42 is reversely rotated by the motor 41 when the bridge portion 433 of the lifting / lowering portion 43 is inserted into the rotation slit portion 4412 of the guide slit 441, the downward movement of the ball screw nut 431 is caused. Since the rotation of the bridge portion 433 and the rotation slit portion 4412 is suppressed and the rotation is not suppressed within the range of the rotation slit portion 4412, the ball screw nut 431 is within the range of the rotation slit portion 4412. Rotates clockwise from above, and as a result, the entire elevating part 43 rotates clockwise as viewed from above.

  Further, as shown in FIG. 3 c 1, when the bridge portion 433 of the lifting / lowering portion 43 is inserted below the upper end of the adjustment upper / lower slit portion 4413 of the guide slit 441, the ball screw 42 is rotated forward by the motor 41. Then, as shown in FIG. 3c2, the rotation of the ball screw nut 431 is suppressed by the contact between the bridge portion 433 and the adjustment upper / lower slit portion 4413, so that the ball screw nut 431 moves upward, and accordingly, the elevating portion 43 The whole of moves up.

  When the bridge portion 433 of the lifting / lowering portion 43 is in a state of being inserted in a position above the lower end of the adjustment upper / lower slit portion 4413 of the adjustment upper / lower slit portion 4413 of the guide slit 441, the ball screw 42 is moved by the motor 41. Is rotated in the reverse direction, the ball screw nut 431 moves downward, and accordingly, the entire lifting unit 43 moves downward.

Next, the movable floor mechanism 3 provided on the floor in front of each tire chamber 2 will be described.
FIG. 4a shows the configuration of the movable floor mechanism 3 viewed from the front, FIG. 4b shows the configuration of the movable floor mechanism 3 viewed from above, and FIG. 4c shows the configuration of the movable floor mechanism 3 viewed from the side.
As shown in the drawing, the lower end of the guide pipe 44 of the tire mounting device 4 reaches a height that is below the floor in front of the tire testing device, and an arm storage chamber 601 is located under the floor in front of the tire testing device. Is provided.

  The movable floor mechanism 3 includes a movable floor 301 and a moving mechanism that moves the movable floor 301 back and forth and right and left. The moving mechanism includes a front and rear moving mechanism that moves the movable floor 301 back and forth, and the movable floor 301. It consists of a left-right moving mechanism that moves left and right.

  The front-rear moving mechanism includes a frame 311 disposed so as to surround the front, rear, left and right of the movable floor 301, and a front-rear pole 312 that supports the movable floor 301 so as to be movable in the front-rear direction. And a forward / backward moving ball screw mechanism 313 for moving the movable floor 301 supported by the front / rear pole 312 back and forth. The left / right moving mechanism includes a left / right pole 321 that supports the frame 311 of the front / rear moving mechanism so as to be movable to the left and right, and a left / right moving ball screw mechanism 322 that moves the frame 311 supported by the left / right pole 321 to the left and right.

  Here, such a moving mechanism can move the movable floor 301 to the left and right between the position covering the storage chamber 601 and the position exposing the storage chamber 601 by the left-right movement mechanism. Further, the movable floor 301 can be moved back and forth within a predetermined range by the back and forth movement mechanism.

Hereinafter, the operation | movement of the tire mounting | wearing in such a tire testing apparatus is demonstrated.
Here, the tire mounting device 4 includes a control unit that inputs distances in four directions detected by the distance sensor unit 4342. The control unit moves the motor 41 of the tire mounting device 4 and the left and right movements of the movable floor mechanism 3. The tire mounting operation is controlled through the ball screw mechanism 322 and the forward / backward moving ball screw mechanism 313 as follows. Further, the tire mounting device 4 is provided with a rotary encoder that detects the rotation of the ball screw 42, and the position of the elevating unit 43 is uniquely determined with respect to the rotation amount of the ball screw 42. The control unit detects the height and rotation angle of the arm 434 from the rotation amount of the ball screw 42 detected by the rotary encoder.

  Now, when the tire mounting device 4 is not used, as shown in the front view of FIG. 5a1 and the top view of FIG. 5a2, the elevating part 43 is at the lowermost position, and the arm 434 is housed in the housing chamber 601, The storage chamber 601 is covered with a movable floor 301.

  Next, in this state, if an operator instructs the start of the mounting process, the control unit controls the left / right moving ball screw mechanism 322 to move the movable floor 301 to the right as shown in FIGS. 5b1 and b2. The storage chamber 601 is exposed by moving.

Then, the motor 41 is rotated forward, and the arm 434 is raised from the height of the movable floor 301 to a position higher by a preset radius of the tire 100 as shown in FIGS. To stop.
In this state, the operator installs the tire 100 at a predetermined position on the movable floor 301 with the center bore of the tire 100 facing the arm 434 so that the tire 100 is approximately coaxial with the arm 434, and resumes processing. Instruct the control unit.
The control unit supported to resume the process controls the left and right moving ball screw mechanism 322 and moves the movable floor 301 to the left until the insertion of the distance sensor unit 4342 at the tip of the arm 434 into the center bore of the tire 100 is detected. To do. Here, the detection of the insertion of the distance sensor unit 4342 into the center bore is performed such that the distance in the four directions (up and down and front and back) detected by the distance sensor unit 4342 is equal to or less than a predetermined distance (for example, a distance obtained by adding a margin to the radius of the center bore). This is performed by determining that the distance sensor unit 4342 has been inserted into the center bore.

  That is, if the control unit is instructed to resume the process with the tire 100 placed on the movable floor 301 as shown in FIG. 7a, the control unit moves the movable floor 301 to the left, as shown in FIGS. 7b1 and b2. Thus, the distance sensor portion 4342 at the tip of the arm 434 is inserted into the center bore.

If the insertion of the distance sensor unit 4342 into the center bore is detected, the control unit stops the movement of the movable floor 301.
Next, the control unit controls the motor 41 of the tire mounting device 4 according to the difference in the vertical distance detected by the distance sensor unit 4342 so that the difference in the vertical distance becomes zero. 434 is moved up and down. Further, the control unit controls the forward / backward moving ball screw mechanism 313 according to the difference between the front and rear distances detected by the distance sensor unit 4342, and moves the movable stage forward and backward so that the difference between the front and rear distances becomes zero. Move to.

  That is, the control unit moves the arm 434 up and down and the movable floor 301 as shown in FIGS. 5d1 and d2, with the distance sensor 4342 at the tip of the arm 434 inserted into the center bore as shown in FIGS. 7b1 and b2. The arm 434 and the center bore of the tire 100 are arranged so as to be coaxial with each other.

  At this time, the control unit calculates the diameter of the center bore of the tire 100 based on the distances in the four directions detected by the distance sensor unit 4342, and calculates the diameter Rb of the center bore of the tire 100 and the diameter Rr of the arm 434. The difference (Rb−Rr) / 2 between the radius of the center bore and the radius of the arm 434 is stored as the vertical adjustment amount. Note that when the vertical adjustment amount becomes negative, the arm 434 does not enter the center bore, so the control unit stops processing at that time and notifies an error.

  Next, when the arm 434 and the center bore of the tire 100 are coaxial, the left and right moving ball screw mechanism 322 is controlled to move the movable floor 301 to the left, as shown in FIGS. 6a1, a2, and 7c. As described above, the tire 100 is attached to the arm 434 by fitting the center bore of the tire 100 into the tip of the arm 434, and the movement of the movable floor 301 is stopped.

Then, the control unit rotates the motor 41 forward.
Then, the arm 434 continues to rise when the bridge portion 433 is guided by the upper and lower slit portions 4411 and the bridge portion 433 rises to the upper end of the upper and lower slit portions 4411 as shown in FIGS. 6b1 and b2. As shown in FIGS. 6 c and c 2, the bridge portion 433 is guided by the rotation slit portion 4412 to rotate counterclockwise as viewed from above.

  Here, the guide slit 441 of the guide pipe 44 is such that the center height of the tip of the arm 434 when guided to the upper and lower slits of the bridge portion is the center of the spindle 5 installed in the tire chamber 2. It is set so that the tip of the arm 434 comes into contact with the spindle 5 when the bridge portion 433 is guided by the rotation slit portion 4412 and rotated the maximum amount of rotation counterclockwise. .

  Here, as shown in FIG. 8 a, the spindle 5 has a cylindrical main body 51 and a small-diameter cylindrical center shaft 52 that protrudes from the center of the bottom of the front end of the main body 51. Here, the main body 51 and the center shaft 52 are provided coaxially.

Further, the center shaft 52 is a circular tubular member, and a taper 53 whose diameter increases as it approaches the main body 51 is formed at the bottom of the center shaft 52.
In such a configuration, when the arm 434 rotates as shown in FIGS. 6c1 and c2, the tip of the arm 434 approaches the center shaft 52 while rotating as shown in FIGS. The sensor portion 4342 is inserted inside the center shaft 52, and the tip of the arm 434 and the center shaft 52 abut on the same axis.

  As shown in FIGS. 6 c 1 and c 2, the control unit has memorized if the bridge unit 433 rotates to the maximum rotation amount and reaches the position where the tip of the arm 434 contacts the spindle 5. If the vertical adjustment amount is 0, the motor 41 is stopped and the mounting process is terminated. On the other hand, if the stored vertical adjustment amount is not 0, the motor 41 is further rotated forward, the arm 434 is raised by an amount equal to the above-described vertical adjustment amount, and the center bore shaft of the tire 100 is connected to the spindle 5. After being coaxial with the shaft, the mounting process is terminated.

  Here, the case where the vertical adjustment amount is not 0 is a case where the diameter of the center bore of the tire 100 is larger than the diameter of the arm 434 as shown in FIG. In this case, the difference between the radius of the center bore and the radius of the arm 434, and by raising the arm 434, the axis of the center bore of the tire 100 can be made coaxial with the axis of the spindle 5 as shown in FIG. it can.

  Next, when the tip of the arm 434 comes into contact with the spindle 5 coaxially, as shown in FIG. 6d1, d2, FIG. 8a4, and FIG. After 100 is pushed in and the tire 100 is mounted on the spindle 5, the tire 100 is fixed to the spindle 5 with a bolt. 8a4 shows a case where the diameter of the center bore of the tire 100 is equal to the diameter of the arm 434, and FIG. 8b3 shows a case where the diameter of the center bore of the tire 100 is larger than the diameter of the arm 434.

  6d1, d2, FIG. 8a4, and FIG. 8b3, when the tire 100 is pushed in the direction of the spindle 5, the tapered shape provided in the opening inside the center bore of the center bore of the wheel of the tire 100, and the center The tire 100 is pushed into the spindle 5 so as to be coaxial with the spindle 5 by contact with the taper 53 at the bottom of the shaft 52.

Now, when the tire 100 is fixed to the spindle 5 as described above, the operator instructs the control unit to start the accommodation process.
The control unit instructed to start the accommodation process moves the movable floor 301 to the right to expose the accommodation chamber 601 and rotates the motor 41 in the reverse direction. Then, when the bridge portion 433 is in the upper and lower slit portions 4413 when the reverse rotation of the motor 41 is started, the arm 434 is lowered by the guide action by the adjustment upper and lower slit portions 4413 and then the bridge portion 433 by the rotation slit portion 4412 is moved. It rotates clockwise as viewed from above by the action of the guide, and then descends to a height at which the bridge part 433 is positioned at the lower end of the upper and lower slit parts 4411 by the action of the guide of the bridge part 433 by the upper and lower slit parts 4411. To do. On the other hand, when the bridge portion 433 is in the rotation slit portion 4412 when the reverse rotation of the motor 41 is started, the arm 434 is directly rotated clockwise as viewed from above by the guide of the bridge portion 433 by the rotation slit portion 4412. Then, it is lowered to a height at which the bridge portion 433 is positioned at the lower end of the upper and lower slit portions 4411 by the action of the guide of the bridge portion 433 by the upper and lower slit portions 4411.

  Next, when the bridge portion 433 is lowered to a height at which the upper and lower slit portions 4411 are positioned, and the arm 434 is accommodated in the accommodation chamber 601, the control unit stops the rotation of the motor 41 and moves the movable floor 301 to the left. And the accommodation room 601 is covered with the movable floor 301.

The tire mounting operation has been described above.
In the tire mounting device 4, the operation when removing the tire 100 from the spindle 5 is the opposite operation to the above tire mounting operation.
Up to this point, the configuration and operation of the tire mounting device 4 have been described by taking the tire mounting device 4 disposed in the left tire chamber 2 as an example, but the tire mounting device 4 disposed in the right tire chamber 2 has been described. The configuration and operation are arranged in the left tire chamber 2 except that the rotation direction and the circumferential direction as viewed from above and below in the description of the tire mounting device 4 arranged in the left tire chamber 2 are reversed. This is the same as the tire mounting device configuration and operation.

The embodiment of the present invention has been described above.
As described above, according to the present embodiment, the operator causes the tip of the arm 434 raised to the height on the movable floor 301 that matches the radius of the tire 100 by the control unit to face the center bore. In addition, by simply mounting the tire 100 on the movable floor 301, the tip of the arm 434 can be fitted into the center bore of the tire 100, and the tire 100 can be supported by the arm 434.

  Here, in the tire mounting device 4 described above, the arm 434 is rotated to a position where the tip of the arm 434 and the center shaft 52 come into contact with each other. However, in the tire mounting device 4, the tip of the arm 434 and the center shaft 52 are aligned. The arm 434 may be rotated only to a position close to it.

In the above embodiment, the distance sensor unit 4342 is provided with four sensors 43421 for detecting the distance to an object in the four directions perpendicular to the axial direction of the arm 434, as shown in FIG. 2a6. However, the distance sensor unit 4342 may be provided with a sensor 43421 that detects the distance to an object in that direction in any number of three or more directions perpendicular to the axial direction of the arm 434. If the distance to the inner play surface of the center bore of the tire 100 is obtained in at least three directions, the inner circumference circle of the center bore of the tire 100 is the distance detected in each of the three directions, and the distance is detected from the sensor 43421 in the detection direction. It can be obtained as a circle circumscribing a triangle connecting three distant points.
Further, in the above embodiment, the arm 434 and the center bore are made coaxial by using the distance to the center bore of the tire 100 detected by the distance sensor unit 4342. A distance sensor that detects the distance in at least three directions to the inner peripheral surface of the wheel of the tire 100 is provided, and the arm 434 and the center bore are made coaxial by using the distance to the inner peripheral surface of the wheel detected by the distance sensor. You may make it do.

  DESCRIPTION OF SYMBOLS 1 ... Roller chamber, 2 ... Tire chamber, 3 ... Movable floor mechanism, 4 ... Tire mounting apparatus, 5 ... Spindle, 10 ... Roller, 41 ... Motor, 42 ... Ball screw, 43 ... Lifting part, 44 ... Guide pipe, 51 ... Main part 52 ... Center shaft 53 ... Taper 100 ... Tire 301 ... Moving floor 311 ... Frame 312 ... Previous pole 313 ... Previous moving ball screw mechanism 321 ... Left / right pole 322 ... Left / right moving ball screw mechanism 431 ... Ball screw nut, 432 ... External ring, 433 ... Bridge part, 434 ... Arm, 441 ... Guide slit, 601 ... Storage chamber, 4341 ... Spring, 4342 ... Distance sensor part, 4411 ... Vertical slit part, 4412 ... Rotation slit part 4413 ... Upper and lower slit portions for adjustment, 43421 ... sensors.

Claims (4)

A tire mounting system used for mounting a tire on a spindle of a tire testing apparatus,
An arm that supports the tire in a state where the tip is inserted into the center bore of the tire;
A movable floor on which tires are placed;
A floor moving mechanism for moving the movable floor in a horizontal biaxial direction;
An arm moving mechanism for moving the arm;
A detection sensor for detecting a distance to an object in the direction in at least three directions perpendicular to the axis of the arm having a smaller diameter than the arm provided in a form protruding from the tip at the tip of the arm;
Control means,
When the tire attachment is instructed in a state where the tire is placed on the movable floor so that the tip of the arm at the tire attachment position and the center bore face each other, the control means,
The floor moving mechanism is controlled so that the distance sensor is at least perpendicular to the axis of the arm to the inner peripheral surface of the center bore of the tire in a direction in which the tire approaches the tip of the arm. After moving to a position where the distance in three directions can be detected,
Based on the distance in at least three directions perpendicular to the axis of the arm to the inner peripheral surface of the center bore of the tire detected by the distance sensor, the arm and the center bore of the tire are coaxial. The arm moving mechanism is controlled to raise and lower the arm, and the floor moving mechanism is controlled to move the movable floor in a direction that is perpendicular and horizontal to the axis of the arm.
By controlling the floor moving mechanism, the movable floor is moved in a direction parallel to the tip of the arm and the axis so that the tire approaches the arm, and the tip of the arm is inserted into the center bore of the tire,
Tire mounting characterized in that the arm moving mechanism is controlled so that the arm whose tip is fitted in the center bore of the tire moves so that the tip of the arm comes into contact with or close to the tip of the spindle system. The tire mounting system according to claim 1,
The control means includes a radius R of the center bore and a radius r of the arm based on distances in at least three directions perpendicular to the axis of the arm to the inner peripheral surface of the center bore of the tire detected by the distance sensor. Find the difference R-r as the adjustment distance,
The tip of the arm is controlled so that the tip of the arm is in contact with or close to the tip of the spindle at a position where the axis of the tip of the arm is higher than the spindle axis by the adjustment distance. Is a tire mounting system in which an arm fitted in a tire center bore is moved. A tire mounting system used for mounting a tire on a spindle of a tire testing apparatus,
An arm that supports the tire in a state where the tip is inserted into the center bore of the tire;
A movable floor on which tires are placed;
A floor moving mechanism for moving the movable floor in a horizontal biaxial direction;
An arm moving mechanism for moving the arm;
A detection sensor that is fixed relative to the arm and detects a distance from the arm in at least three directions to an object around the arm;
Control means,
When the tire attachment is instructed in a state where the tire is placed on the movable floor so that the tip of the arm at the tire attachment position and the center bore face each other, the control means,
By controlling the floor moving mechanism, the distance sensor detects the distance in the at least three directions from the movable floor in the direction in which the tire approaches the tip of the arm, and the inner peripheral surface of the wheel of the tire. After moving to a possible position,
Based on the distance in the at least three directions to the inner peripheral surface of the tire wheel detected by the distance sensor, the arm moving mechanism is controlled so that the arm and the wheel are coaxial, and the arm And moving the movable floor in a direction vertical and horizontal to the axis of the arm, by controlling the floor moving mechanism,
By controlling the floor moving mechanism, the movable floor is moved in a direction parallel to the tip of the arm and the axis so that the tire approaches the arm, and the tip of the arm is inserted into the center bore of the tire,
Tire mounting characterized in that the arm moving mechanism is controlled so that the arm whose tip is fitted in the center bore of the tire moves so that the tip of the arm comes into contact with or close to the tip of the spindle system. The tire mounting system according to claim 1, 2 or 3,
It has a storage room arranged at a position lower than the movable floor,
The arm moving mechanism is capable of moving the arm to a position where the arm is accommodated in the accommodation chamber;
The tire mounting system, wherein the floor moving mechanism is capable of moving the movable floor to a position where the movable floor covers the storage chamber.