JPH08175133A - Tire replacement equipment - Google Patents

Abstract

PURPOSE: To facilitate the tire replacing work by providing a chucking unit supported by a moving device through a flotation supporting mechanism to permit the movement in the vertical and right-to-left direction and the inclination in the longitudinal direction. CONSTITUTION: A chucking unit 14 capable of the movement in the vertical and right-to-left direction and the inclination in the longitudinal direction by a flotation supporting mechanism is moved in the longitudinal direction and pressed against the end face of a wheel when a moving device 8 is pushed forward by an elongation mechanism 9. The chucking unit 14 is aligned to a tire 207 in the vertical, the right-to-left and rotational direction, and a supporting table 5 and a slide plate 4 are united and clamped to a truck 1 by a clamping device in the condition. Then, drawing and pushing is achieved along the axis of the tire by the longitudinal movement of the moving device 8. The tire 207 is held by the chucking unit 14, and held in the floated condition by a spring 11 through a rotary bearing 13 and the magnetic force in the vertical direction of a magnet 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aircraft tire changing device. This device is also used to replace aircraft brakes. The present invention is also applied to a tire changing device for large vehicles such as trucks, buses and trailers.

[0002]

2. Description of the Related Art FIG. 11 is a front view of a conventional aircraft tire exchanging device. In the figure, 101 is a part of a moving vehicle. This moving vehicle is fixed during tire replacement work. 102 is a rotating shaft provided on the moving vehicle, 103 is a pair of parallel link arms connected to the rotating shaft,
Reference numeral 104 denotes a lift arm provided on the rotary shaft 102 for moving the parallel link arm up and down. Reference numeral 105 denotes a lift cylinder which is stretched between the rotary shaft 102 and the lift arm 104 to drive the lift arm, 106 denotes a balancing spring provided on a tip rod portion of the lift arm 104, and 107 denotes the parallel link. Part of a pair of parallel link arms 10
3 is an intermediate rotary shaft that is bridged over the tip of the arm 3, 108 is an arm provided on the intermediate rotary shaft, 109 is a wheel holder rotary shaft provided at the tip of the arm, 110
Is a vertical cylinder connected so as to be rotatable about the same rotation axis, 111 is a hydraulic lever for operating expansion and contraction of the cylinder, 112 is a stand suspended at the lower end of the vertical cylinder, and 113 is the same. A wheel holder attached to the lower end of the stand and 207 are tires held on the wheel holder. FIG. 12 is a view of the wheel holder 113 seen from the direction of arrow X in FIG.

In the conventional tire replacement work, for example, when mounting a tire, the wheel holder 1 of the above-mentioned device is used.
By holding the tire 207 on 13 and operating the hydraulic lever 111 to raise and lower the tire, and manually rotating each member connected around the rotary shafts 102, 107 and 109. The tire was brought close to the axle of the landing gear of the aircraft, and the center of the axle and the center of the tire were visually aligned and mounted. In this device, when the tire is brought close to the axle, each part of the device makes an arc motion around the rotation axis, so that the tire cannot move linearly in the direction of the axle, and therefore the core between the tire and the axle is not. It was difficult to align them, and it took a lot of labor and intuition to push and pull them out.

[0004]

SUMMARY OF THE INVENTION The present invention eliminates tire replacement work including centering by intuition and manual work performed by a plurality of workers, mechanizes all work steps, and requires essential points. To facilitate tire replacement work,
It aims to improve work efficiency and shorten man-hours.

[0005]

SUMMARY OF THE INVENTION The present invention solves the above problems and relates to a tire changing apparatus having the following features.

(1) A truck which can be moved on the ground in any direction and whose longitudinal direction is the left-right direction and whose direction orthogonal to the longitudinal direction is the front-rear direction, and which is guided by the upper surface of the truck and moves in the left-right direction. Possible slide plate,
A support base that is supported on the slide plate via an elastic support and can be tilted back and forth with respect to the slide plate, a clamp device that can integrally fix the carriage, the slide plate, and the support base, and the support base. Device which is guided on the upper surface of the vehicle and is movable in the front-back direction; The chucking unit is supported by the moving device.

(2) In the tire exchanging device according to the above item (1), the floating support mechanism is provided in the front lower part of the moving device and has a pair of left and right vertical springs having vertical elastic shafts, and the same vertical direction. A pair of left and right vertical homopolar opposite magnets provided on the same axis as the direction spring, a pair of left and right rotary bearings supported by the vertical spring and vertical homopolar opposite magnets, and a pair of left and right rotary bearings And a pair of left and right left and right homopolar facing magnets provided between the chucking unit and each of the rotary bearings, and a horizontal shaft that supports the chucking unit rotatably and laterally movably. Between the unit and the moving device, a pair of upper and lower front and rear homopolar facing magnets are provided above and below the horizontal axis.

[0008]

[Action]

(1) The trolley is installed with its front face facing the tire to be replaced. The extension mechanism is extended, the moving device is moved forward on the support base, and the chucking unit is pressed against the front surface of the tire. The chucking unit can be moved up and down, left and right, and tilted back and forth by the floating support mechanism, so that fine adjustment can be performed when aligning the cores. After the chucking unit chucks the tire, the slide plate and the support base are clamped to the carriage. When the expansion mechanism is contracted and the moving device is retracted on the support base, the tire is removed from the axle while being held by the chucking unit. The support base is elastically supported and, when the chucking unit is pressed against the tire, is inclined with respect to the slide plate and clamped in that state, so that the tire can be smoothly pulled out in the axial direction. The clamp is released while the pulled-out tire is held, the slide plate is moved to the left or right on the dolly, and the held old tire is removed. To install a new tire, reverse the above procedure.

The portion which can be moved left and right on the carriage, that is, the slide plate and the portion above it are one unit.
By providing a plurality of these units on the trolley as required, tire replacement work can be performed efficiently.

(2) In the floating support mechanism, the rotary bearing is vertically supported by the moving device in the vertical direction by the vertical spring and the vertical homopolar opposite magnets. The chucking unit is supported in the up-down direction by a horizontal shaft that is inserted into the rotary bearing, and is floatingly supported in the left-right direction between the rotary bearings by the left and right homopolar facing magnets. Further, the chucking unit is supported by a rotating shaft and a pair of upper and lower magnets facing each other in the front-rear direction so that the chucking unit can be tilted back and forth. As a whole, the moving device is allowed to move up and down, left and right, and tilt forward and backward, so that fine adjustment can be performed when aligning.

[0011]

1 is a plan view of an aircraft tire exchanging device according to an embodiment of the present invention, FIG. 2 is a front view of the same embodiment, and FIG. 3 is a cross-sectional view of the same embodiment. In the figure, reference numeral 1 is a dolly having a relatively small wheel 1a at the bottom thereof and capable of moving on the ground in any direction. In this dolly, the longitudinal direction is defined as the “left-right direction” and the direction orthogonal to the longitudinal direction is defined as the “front-rear direction”, and the dolly is fixed to the ground so that the front surface of the dolly faces the tire to be replaced. Reference numeral 2 is a drive device for the carriage 1, 3 is a pair of left and right rails provided on the carriage 1 in the longitudinal direction, that is, left and right direction, and 4 is on the same pair of left and right rails 3 in the longitudinal direction of the carriage 1. A slide plate that can be moved to the slide plate 5, a support base that is supported by an elastic support on the slide plate 4 and can tilt with respect to the slide plate, and 6 (FIG. 3) is provided on the carriage 1 and the slide plate A clamp device capable of fixing both 4 and the support 5 to the carriage 1, and 7 is the support 5
The front-rear rails 8 provided at right angles to the longitudinal direction of the carriage 1, that is, the front-rear direction, 8 can move on the front-rear rails 7 in the direction orthogonal to the longitudinal direction of the carriage 1, that is, the front-rear direction. The moving device 9 is an expansion / contraction mechanism mounted between the carriage 1 and the moving device 8.
It is a device that pushes or pulls to move with respect to the support 5. Reference numeral 10 denotes an arm which forms a part of the moving device 8 and which is provided so as to project leftward and rightward in the forward direction of the moving device 8.

Reference numeral 11 (FIG. 3) is a spring provided on the arm 10 so as to have its elastic axis in the vertical direction,
Reference numeral 12 is a vertically opposed magnet provided on the upper side of the spring with the same poles facing each other in the vertical direction, and 13 is a rotary bearing provided on the upper side of the magnet. Reference numeral 14 is a chucking unit provided on the moving device 8. This unit is composed of a central portion for attaching a chuck for gripping a wheel, which will be described later, and a U-shaped portion extending leftward and rightward (FIG. 1). The front end portion of the U-shaped portion is connected to the rotary bearing 13 via a horizontal shaft and via left and right facing magnets 15 (FIGS. 1 and 2) in which the same poles face left and right. Reference numeral 16 is a front-rear facing magnet that is provided between the rear portion of the U-shaped portion of the chucking unit 14 and the moving device 8 so that the same poles face each other in the front-rear direction. Reference numeral 17 (FIG. 1) is a control device attached to the carriage 1. This controller stores the position of the old tire when tires are replaced,
In order to guide the chucking unit to the position of the old tire and smoothly install the new tire, the drive amount of the expansion and contraction mechanism 9 is controlled.

Reference numeral 203 is a leg device of an aircraft, 204 is an axle attached to the same leg device, 205 is a brake attached to the same axle 204, and 206 is attached to the axle 204 adjacent to the brake. Wheel, 207
Is a tire mounted on the outer periphery of the wheel.
The wheel 206 and the tire 207 that are integrated with each other, and the brake 205 that is a separate body from them are objects to be attached and detached by the device of the present invention.

In this device, two slide plates 4 are provided on a carriage, and a support 5, a moving device 8, a chucking unit 14, etc. are provided on each of them. The part that is movable in the left-right direction, including the slide plate and the unit provided on the slide plate, is called a tire exchanging unit. 8 to be described later
In FIG. 10, these integrated parts are indicated by reference numeral 23. This device is provided with two tire changing units, which can independently move left and right on the truck 1 along the rails 3. Overall length L of this device (Fig. 1)
Is 5.2 m. Since this device is used in a narrow space under the leg device of an aircraft, the trolley can be moved in the longitudinal direction (horizontal direction) in order to facilitate movements such as taking in and out.
It is also possible to connect and use it after arriving at a predetermined position.

FIG. 4 is a simplified diagram showing the arrangement of the magnets 12, 15, and 16 of the above embodiment. FIG. 4 (a) is a front view and FIG. 4 (b) is a side view. In the figure, the magnets are provided so that the same poles face each other at the positions shown. Since the chucking unit 14 is supported by the rotary bearing 13 via the horizontal shaft, it can be tilted in the front-rear direction. Further, it is floatingly supported to the left and right by the left and right facing magnets 15 which are interposed between the horizontal shaft and the rotary bearing. Further, the rotary bearing 13 supporting the chucking unit 14 is elastically supported in the vertical direction by the spring 11 on the arm 10 of the moving device 8 and the vertically opposed magnet 1
It is vertically supported by 2. Between the rear part of the chucking unit and the moving device 8, front and rear facing magnets 16 are provided in the upper and lower parts, respectively, so that the chucking unit is supported in a floating state in which it can be tilted forward and backward. With the above configuration, the chucking unit 14
Can be moved up and down, left and right, and can be tilted back and forth about a horizontal axis with respect to the moving device 8. This enables fine adjustment when aligning the wheels.

FIG. 5 is a simplified view showing the mechanism of the wheel chuck. FIG. 5 (a) is a front view and FIG. 5 (b) is a side view. In the figure, 1a is a wheel of the carriage 1, 4a is a wheel of the slide plate 4, 5a is an elastic support for supporting the support 5, and 8a is a wheel of the moving device 8. Reference numeral 20 denotes a tire replacement chuck mounted on the chucking unit 14. Three chucks 20 can be attached to one chucking unit 14. Chuck 20
When the stopper 21 comes into contact with the end surface of the wheel 206, the stopper 21 moves radially outward from the center of the chucking unit 14 and comes into contact with the inner surface of the flange of the wheel 206 to chuck the wheel. . Tire 2
07 is integrated with the wheel 206 and is gripped by this chuck.

The elastic support 5a elastically supports the support base 5 on the slide plate 4. By this action, the support 5, the moving device 8, and the chucking unit 14 can be integrated and tilted with respect to the slide plate 4. Reference numeral 9 is an expansion / contraction mechanism attached to the carriage 1, and pushes and pulls the moving device 8 at one end thereof. When the chucking unit 14 is pressed against the wheel 206 to chuck the wheel 206, the extension mechanism 9 is extended and the moving device 8 is pushed from the rear. At this time, the moving device 8 moves together with the chucking unit 14 in the front-back rail 7 on the support base.
Along with the chucking unit 14,
The moving device 8 and the support base 5 are integrated to form an elastic support 5a.
Is tilted with respect to the slide plate 4 and pressed against the wheel 206 to perform centering. In the state where the alignment is completed (the state shown by the broken line in FIG. 5B), the support base 5 and the slide plate 4 are both mounted on the carriage 1.
It is clamped by the clamp device 6. Wheel 2
When the 06 is pulled out from the axle, the telescopic mechanism 9 is contracted and the moving device 8 is retracted. At this time, since the support base 5 is already fixed to the carriage 1, the moving device 8 moves backward along the front-rear rail 7 on the support base 5 together with the chucking unit 14, the wheel 206, and the tire 207.

FIG. 6 is a sectional view showing a state where the tire replacement chuck 20 and the stopper 21 are in contact with the wheel 206. The tire 207 is integrally gripped with the wheel 206 by this chuck, and is attached / detached.

FIG. 7 is a sectional view showing a state where the brake exchanging chuck 22 is in contact with the brake 205. This figure shows the condition after the wheels and tires have been removed. Only the brake 205 remains on the axle 204. The brake exchanging chuck 22 is mounted in an alternate manner after removing the tire exchanging chuck. This is longer than the tire exchanging chuck 20 described above, and is adapted to move radially outward from a position close to the axle.

The apparatus of the present embodiment having the above-mentioned structure has a large diameter (1.26 m) and a large weight (17
This is an example of an automatic changing device for changing a tire of 0 kg). The chucking unit, which can be moved up and down, left and right, and tilted forward and backward by the floating support mechanism, moves forward with the moving device when it is pushed forward by the telescopic mechanism, and is pressed against the end surface of the wheel 206. Further, the three tire exchanging chucks 20 attached to the chucking unit have a structure in which three of them are opened concentrically, so that the chucking unit 14 and the tire 207 can be forcibly aligned. By the above-mentioned operation, the chucking unit 14 moves up and down, left and right, and in the rotation direction.
07, the support base 5 and the slide plate 4 are rigidly coupled to the carriage 1 by the clamp device 6 in that state, and clamped in a state of being the core of the tire. After that, the moving device 8 is moved back and forth to pull and push along the tire core. The tire 207 is shown in FIG.
The force is applied from both sides via the chucking unit 14 by the lateral magnetic force of the magnet 15 shown in FIG. Also, the tire 20
7 is held by a chucking unit 14, and it is held in a floating state by a vertical magnetic force of a spring 11 and a magnet 12 via a rotary bearing 13. Then, the moving device 8 smoothly pulls out or pushes along the core. The action when the brake is exchanged by attaching the brake exchange chuck 22 is the same as when the tire is exchanged.

8 to 10 are process diagrams of tire and brake replacement using the apparatus of this embodiment. FIG. 8 shows the process when only the tire (including the wheel) is replaced, FIG. 9 shows the process when only the brake is replaced, and FIG. 10 shows the process when the tire (including the wheel) and the brake are both replaced. The process of exchanging tires and the like will be described below with reference to the drawings. In each figure, (a), (b), (c), ... Show the order of steps. Further, the two tire exchanging units 23 provided on the carriage will be described with the left one as the left unit 23A and the right one as the right unit 23B. The tire or brake to be replaced shall be the one on the left side.

FIG. 8: When replacing only tires (including wheels): (a) Both left and right units 23A and 23B are provided with tire replacement chucks 20. Place both the left and right units to the left on the dolly. Use a jack to push up on the leg device to lift the old tire off the ground. Position the dolly so that the right unit is located almost in front of the old tire to be replaced. (B) Install a new tire on the left unit. (C) Remove the old tire with the right unit. (D) While holding the old tire on the right unit, move the left and right units together to the right on the carriage. At this time, the left unit is located almost in front of the axle with the tires removed. (E) Install a new tire on the axle with the left unit.
Loosen the jack and ground the tire. This completes the tire replacement. In this process, the brakes used on the axle are not replaced.

FIG. 9: When only the brake is replaced: (a) The brake replacement chuck 2 is provided on the left unit 23A.
2, the right unit 23B has a tire replacement chuck 20
Is provided. Place both the left and right units to the left on the dolly. Use the jack to push up the leg device to lift the tire off the ground. Position the dolly so that the right unit is located almost in front of the tire with the brake to be replaced. (B) Remove the tire in use by the right unit. (C) While holding the tire in use on the right unit, move the left and right units to the right side on the carriage. At this time, the left unit is located almost in front of the axle with the tires removed. (D) Remove the old brake on the left unit. (E) While holding the old brake on the left unit, move the left unit to the left side on the carriage. (F) Replace the old brake on the left unit with the new brake. (G) Return the left unit to almost the front of the axle from which the old brake was removed, and attach the new brake to the axle. (H) Move both left and right units to the left. At this time, the right unit is located almost in front of the axle with the new brake installed. (I) Reinstall the tire in use on the original axle by the right unit. Loosen the jack and ground the tire. This completes the brake replacement. In this step, the tire in use is once removed and then attached to the original position again.

FIG. 10: When replacing both the tire (including wheel) and the brake: (a) The brake replacement chuck 2 is provided on the left unit 23A.
2, the right unit 23B- is a tire replacement chuck 20
Is provided. Place both the left and right units to the left on the dolly. Use a jack to push up on the leg device to lift the old tire off the ground. Position the dolly so that the right unit is located almost in front of the tire to be replaced. (B) Remove the old tire with the right unit. (C) While holding the old tire on the right unit, move the left and right units to the right side on the carriage. At this time, the left unit is located almost in front of the axle with the tires removed. (D) Remove the old brake on the left unit. (E) While holding the old brake on the left unit, move the left unit to the left side on the carriage. (F) Replace the old brake on the left unit with the new brake. (G) Return the left unit to almost the front of the axle from which the old brake was removed, and attach the new brake to the axle. (H) Move the left unit to the left side on the dolly, and replace the brake replacement chuck attached to the same unit with the tire replacement chuck. (I) Install a new tire on the left unit. (J) Return the left unit to the front of the axle where the new brake was attached and attach the new tire to the axle. Loosen the jack and ground the tire. This completes the replacement of tires and brakes.

As described in detail above, by using the tire exchanging device of this embodiment, one person can perform the exchanging work which has conventionally required about three people at the peak of manual labor. Working time can be reduced to about 1/2. In the past, it was limited to veteran work that cultivated "experience and intuition", but by using this device, even beginners can operate with a short orientation and it will greatly contribute to the rationalization of aircraft maintenance. You can

[0026]

The tire exchanging device of the present invention is a truck that can move on the ground in any direction, a slide plate that is guided on the upper surface of the truck and that can move to the left and right,
A support base that is elastically supported on the slide plate and can be tilted back and forth with respect to the slide plate, a clamp device that can integrally fix the carriage, the slide plate and the support base, and is guided on the upper surface of the support base. A moving device that is movable in the front-rear direction, a telescopic mechanism that is provided on the carriage to move the moving device in the front-rear direction, and a floating support mechanism that allows movement in the up-down direction, the left-right direction, and a tilt in the front-rear direction. Since the chucking unit is supported, tires and the like can be easily replaced, and work efficiency can be improved and work time can be shortened.

[Brief description of drawings]

FIG. 1 is a plan view of an aircraft tire changing device according to an embodiment of the present invention.

FIG. 2 is a front view of the embodiment.

FIG. 3 is a cross-sectional view of the same embodiment.

FIG. 4 is a simplified diagram showing the arrangement of magnets of the same embodiment,
(A) is a front view and (b) is a side view.

FIG. 5 is a simplified view showing a wheel chuck mechanism of the same embodiment, (a) is a front view and (b) is a side view.

FIG. 6 is a cross-sectional view showing a contact state of the tire exchanging chuck of the embodiment.

FIG. 7 is a cross-sectional view showing a contact state of the brake replacement chuck of the embodiment.

FIG. 8 is a tire (including a wheel) using the apparatus of the embodiment.
Process drawing when only replacing.

FIG. 9 is a process diagram when only the brake is replaced using the apparatus of the embodiment.

FIG. 10 is a process drawing of a case where a tire (including a wheel) and a brake are exchanged by using the device of the embodiment.

FIG. 11 is a front view of a conventional aircraft tire changing device.

FIG. 12 shows the wheel holder of the above apparatus by the arrow X in FIG.
From the direction of.

[Explanation of symbols]

 1 dolly 1a dolly wheel 2 dolly driving device 3 left-right rail 4 slide plate 4a slide plate wheel 5 chucking unit support 5a elastic support 6 supporting the support 6 clamping device 7 front-rear rail 8 moving device 8a moving device Wheel 9 Expansion / contraction mechanism 10 Arm 11 Spring 12 Vertically opposed magnet 13 Rotating bearing 14 Chucking unit 15 Left / right opposed magnet 16 Front / rear opposed magnet 17 Control panel 20 Tire replacement chuck 21 Stopper 22 Brake replacement chuck 23 Tire replacement unit 23A Left unit (Left tire replacement unit) 23B Right unit (right tire replacement unit) 203 Leg device 204 Axle 205 Brake 206 Wheel 207 Tire

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shoji Mitsui 1-8, Koukiura, Kanazawa-ku, Yokohama 1 Yokohama Research Laboratory, Mitsubishi Heavy Industries, Ltd. (72) Yoshimasa Kawakita, 12 Nishiki-cho, Naka-ku, Yokohama Mitsubishi Heavy Industries Stock Association Inside the Yokohama Works (72) Inventor Isao Nemoto 2-12-7 Maehara Nishi, Funabashi City, Chiba Koei Engineering Co., Ltd.

Claims (2)

[Claims] 1. A dolly which can be moved on the ground in any direction and whose longitudinal direction is the left-right direction and whose direction orthogonal to the longitudinal direction is the front-back direction, and which can be moved in the left-right direction by being guided on the upper surface of the dolly. Slide plate, a support base supported on the slide plate via an elastic support and capable of inclining forward and backward with respect to the slide plate, and a clamp device capable of integrally fixing the carriage, the slide plate and the support base A moving device which is guided on the upper surface of the support table and is movable in the front-rear direction; an expansion / contraction mechanism provided on the carriage for moving the moving device in the front-rear direction; and a vertical and horizontal movement and a front-back inclination. Tire exchanging device comprising a chucking unit supported by the moving device by a floating support mechanism. Place. 2. The floating support mechanism comprises a pair of left and right vertical springs provided at the lower front portion of the moving device and having elastic shafts in the vertical direction, and a pair of left and right upper and lower springs provided on the same axis as the vertical springs. Directional homopolar opposing magnets, a pair of left and right rotary bearings supported by the vertical spring and the vertical homopolar opposing magnets, and a chucking unit that is inserted through the pair of left and right rotary bearings to allow the chucking unit to rotate and move laterally. A horizontal shaft for supporting, a pair of left and right left and right homopolar facing magnets provided between the chucking unit and each of the rotary bearings, and above the horizontal shaft between the chucking unit and the moving device. The tire exchanging device according to claim 1, wherein the tire exchanging device comprises a pair of upper and lower magnets facing each other in the front-rear direction.