JPS63300935A - Automobile position matching device - Google Patents

Abstract

PURPOSE:To improve the reliability of measurement and to automate and rationalize operation by stopping an automobile being conveyed on a rack table TB which moves cyclically, and matching the part of the automobile to be measured with a wheel alignment measuring instrument position. CONSTITUTION:The TB 47 is supported in the center on an intermediate frame FM 38 horizontally rotatably, and plural air bearings 46 seated on the FM 38 normally are mounted below the TB. While a centering spring which controls the front-rear and right-left positions of the TB 47 about the FM 38 at the time of the air floating of the bearing 46 is extended between the TB 47 and FM 38, the FM 38 is provided movably to an under FM 35 below it. Then a lock plate 41 which is projected in the center below the FM 38 normally is restrained at the center position on the FM 35 to center the FM 38 to the FM 35. Consequently, the vehicle 5 which is conveyed by a conveyor for conveyance is passed to the TB 47 moving synchronously right below it, and then rotated together with the TB 47 and moved forth and back, and right and left, so that the front-rear and right-left directions of the vehicle 5 are matched with the base part below the TB 47.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an automobile position alignment device that is capable of accurately and continuously measuring wheel alignment depending on the vehicle type and its model, for example on an automobile production line. .

(Conventional technology) For example, after the assembly process is completed on an automobile production line, Ω
When continuously measuring the wheel alignment of an automobile, it is necessary to synchronize the wheel alignment measuring device with the transport speed of the automobile and to precisely align the portion of the wheel to be measured with the position of the measuring device.

Conventionally, in response to such requests, the
There is a technique disclosed in Japanese Patent No. -29708. That is, in this publication, a horizontal rod is provided on a pedestal that moves in synchronization with the transport speed of the automobile so as to be movable back and forth, left and right, a horizontal rotary plate is rotatably provided at both ends of the rod, and the rotation of this rotary plate is While measuring the toe angle with a first sensor that detects the angle, an arm is provided upright on the horizontal rotary plate, a vertical rotary plate that can be attached to a brake disc is provided at the tip of the arm, and a vertical rotary plate is provided at the base end of the arm. A wheel alignment measuring device is shown in which a second sensor is provided to detect the tilt angle of the arm, and the camber angle is measured by the sensor.

(Problem to be solved by the invention) However, with this conventional measuring device, the vertical rotary plate must be attached to the brake disc of each automobile via bolts and nuts for each measurement, and the work of attaching and detaching it is extremely difficult. Although it is complicated, in actual measurement, after the vertical rotary plate is attached to the brake disc, the horizontal rod can move back and forth and left and right via the support and rail, so it is difficult to measure due to swinging or vibration of the car or the pedestal. There is a problem in that the influence of measurement errors on the first and second sensors cannot be avoided, and it is difficult to expect sufficient reliability from the measurement results.

The present invention solves such conventional problems, and makes the automobile being transported in the production line stationary on a mounting table that moves in synchronization with the automobile, and places the part to be measured of the automobile at the position of a wheel alignment measuring device that moves simultaneously. It is an object of the present invention to provide a vehicle position matching device that improves the reliability of the above-mentioned measurements by accurately aligning the positions of the vehicle positions, and promotes automation and rationalization of this type of work.

(Means for Solving the Problem) For this reason, the vehicle position alignment device of the present invention transfers the vehicle transported by the transport conveyor to a mounting table that moves synchronously directly below the conveyor. Equipped with a main lift device that rotates the upper vehicle together with the table and moves it in the front, rear, left and right directions, aligning the vehicle in the front, rear, left and right directions with the base of the lower part of the loading table, and transports the vehicle in different postures on the conveyor. The present invention is characterized in that the vehicle is reliably and orderly positioned in a predetermined direction on the mounting table.

(Example) Hereinafter, one example of the present invention will be described with reference to the drawings.
In the drawings to FIG. 25, reference numeral 1 denotes a long transport conveyor installed above the automobile production line, and a plurality of hangers 2 are suspended from the conveyor 1 at predetermined intervals.
A test vehicle 5 is accommodated on the forks 4, 4, which are integrated with the underframe 3.3 of the hanger 2, before the door and tires are attached.

A pair of mounting rails 6.6, which are longer than the vehicle length of the test vehicle 5, are laid in a section of the assembly process completed area of the production line, and running rails 6a, 6 fixed on these rails 6.6 are installed.
An automobile position alignment device knee is mounted on a for reciprocating movement. The device has a pair of elongated pace frames 8, 8 at the bottom, and a plurality of cars #a9.
9 is rotatably supported and is able to travel on the traveling rails 6a, 6a.

A drive machine tfllL is provided at the rear end of the base frames 8, 8, and this mechanism 1cL is driven by a drive motor 11 capable of forward and reverse rotation.
and gear boxes 12, 13, a magnetic clutch brake 14, a magnetic clutch 15, and a reducer 16, and the power from the reducer 16 was wound between a driving sprocket 17, a driven sprocket 18, and between these sprockets 17 and 18. Via chain 1.9,
Transmission is possible to the wheel 9 fixed coaxially with the driven sprocket 18.

When the test vehicle 5 approaches a predetermined position behind the vehicle position matching device WL, the drive motor 11 is driven in conjunction with the operation of an appropriate sensor that detects the situation, and moves the vehicle position matching device I- forward. On the other hand, after reaching a steady speed, the rotation is controlled to the same speed as the moving speed of the transport conveyor 1 through a known means, and the consistency of the synchronous movement of the above device with respect to the conveyor 1 is controlled by a proximity switch, which will be described later. let it be detected,
The rotational speed of the motor 11 can be controlled in accordance with the detection signal.

After measuring the wheel alignment of the test vehicle 5, the motor 11 stops driving when the wheels have been transferred to the hanger 2, and thereafter is driven in reverse to quickly return the alignment device 1-. In the figure, 20 is the base frame 8
A guide roller is rotatably supported at the outer lower part of the guide rail 6 and can be moved along the outer peripheral surface of the guide rail 6.

On the other hand, at the center position in the length direction of the base frame 8.8, there is a main lift device λ capable of lifting up the test vehicle 5.
Lift up the front and rear wheel suspensions of the test vehicle 5 after it has been fixed to the first to third clamp devices IL, 2L3-, U, which fix the vehicle 5 to the main lift device 2'-, and the lift device LL. Above the possible sub-lift device 1, a wheel alignment measuring device 16=, LL capable of measuring the wheel alignment of the front and rear wheels is disposed.

Among these, the main lift device LL is equipped with a central table lifter L& at the bottom as shown in FIGS. 4 to 8.
The lift tome turtle includes upper and lower tables 29.30, and a lift arm 31 that pivotally connects these tables 29.30.
The lift arms 31, 31 are configured to be able to be raised and lowered via hydraulic cylinders (paths shown).

A plurality of mounting frames 32 are fixed on the upper upper table 29, and a guide rod 33 is erected on the frames 32 arranged around the table 29.
A guide bushing 34 is slidably and rotatably mounted on the guide rod 33. The guide bush 34 is fixed to the four corners of the under frame 35, and the guide bush 34 is fixed to the four corners of the under frame 35.
can be moved vertically and rotated horizontally, and an air spring 36 is interposed at the center of the frame 35 and mounting frame 32 to absorb shocks acting on the frame 35.

A pair of mounting rails 37 are provided on the under frame 35.
．． 37 are fixed apart from each other, and these conveyor 1
guide rails 39, 39 fixed to the intermediate frame 38 are slidably fitted therein. An engagement plate 40 and a lock plate 41 are fixed to the lower surface of the intermediate frame 38, of which the engagement plate 40 is fixed in the same direction as the axial direction of the guide rail 39, and both sides of this plate 40 are fixed to the under frame 35. Pressure contact is possible with a pair of clamping pieces of the caliper 42.

On the other hand, the lock plate 41 is disposed at the center of the intermediate frame 38 in a direction perpendicular to the axial direction of the guide rail 39, and a pair of lock cylinders 43, 43 are provided on both sides of the plate 41.
are placed facing each other. As shown in FIG. 6, the lock cylinders 43, 43 are fixed with a pair of similar hydraulic cylinders facing each other at a central position on the underframe 35,
The intermediate frame 38 is fixed at the center position of the under frame 35 by pressing the tips of the operating rods 44, 44 in opposite directions from both sides of the lock plate 41.

A plurality of base plates 45 are provided on the upper part of the intermediate frame 38.
are fixed, and a loading table 47 equipped with an air bearing 46 is supported directly above these so as to be swingable in the horizontal direction.

That is, at the center of the lower part of the mounting table 47, there is a long hole-shaped bearing guide 48 extending in the same direction as the transport conveyor 1.
A bearing 49 protruding from the center of the intermediate frame 38 is engaged in the guide 48 to enable the mounting table 47 to swing within the guide 48.

The air bearing 46 allows the mounting table 45 to float and swing by blowing compressed air onto the base plate 45 at a predetermined time, while normally stopping the air float and allowing the table to sit on the base plate 45. ,
A mounting table 47 is kept stationary on an intermediate frame 38.

Between the outer frame of the mounting table 47 and the inner frame of the intermediate frame 38, a pair of centering springs 50° and 50 are installed in the same direction as the conveyance direction of the conveyor 1 through appropriate latches. , and the outer frame and the intermediate frame 38
A pair of centering springs 51 and 51 are connected to the spring 50 through appropriate latching fittings.
．． These springs 50 and 51 apply their restoring force to the loading table 47 to center the table 47 with respect to the intermediate frame 38 when the air bearing 46 air floats. It makes it possible.

In the figure, 52 is a top plate made of a buffer member mounted on the mounting table 47, and 53 is a position detection sensor such as a proximity switch installed at the bottom of the table 47, which can detect the moving position of the movable piece 54. ing.

On the other hand, the first clamp device 2-1 is constructed by disposing a pair of left and right similar ramp devices outside the main lift device LL, as shown in FIGS. 9 and 10.
A pair of support brackets 55.55 are provided upright on the outer periphery of the base frame 8.8. A sleeve 56.56 is fixed to the upper part of the support bracket 55.55,
A guide rod 57.57 is slidably inserted into these, and a bridge frame 58 is fixed between the upper ends of this guide rod 57.57.

A plurality of bearings 59 are fixed to the upper surface of the bridge frame 58, and a rotation shaft 60 is rotatably supported by these bearings. On the other hand, the support bracket 55. ．． A lift cylinder 61 and a clamp cylinder 62 are disposed between the base frame 8 and the lift cylinder 61, of which the lift cylinder 61 is fixed vertically upward to the outer circumference of the base frame 8,
The bridge frame 58 is attached to the upper end of 3 via the fixing fitting 64.
are connected. The clamp cylinder 62 is the tenth cylinder.
As shown in the figure, it is mounted diagonally upward to the outside, and its base is pivotally connected via a bracket 65, 65, and a link 66 is attached to the tip of the piston rod.
One end is rotatably connected, and the other end is rotatably connected to the rotation shaft 60.

The rotation shaft 60 has a pair of front and rear clamp arms 6.
The base ends of 7 and 68 are fixed, and these are formed into a substantially sickle shape as shown in FIG. 10, and the upper ends thereof can be engaged with the upper surfaces of the Kiraking plates 69 on both sides of the test vehicle 5. In the figure, reference numeral 70 denotes a frame erected in front of the front side support bracket 55, the lower end of which is fixed to the outer periphery of the base frame 8, and the cylinder 71 fixed vertically upward to the upper end. The cylinder 71 can be operated in parallel with the forward rotation of the drive motor 11, and a roller 72 that can come into contact with the lower part of the underframe 3 can be freely rotated through an appropriate fitting at the tip of the piston rod. It is pivoted on.

A plurality of speed sensors 73 such as proximity switches are arranged in front and rear rows near the roller 72, and these sensors 73 are connected to the vehicle position alignment device 7- and the conveyor 1.
It detects the consistency of movement speed with the robot and encourages them to move in sync. That is, each sensor 73 is made capable of detecting the front end position of the under frame 3, and when the front end position of the frame 3 is detected by the sensors 73 and 73 at both the front and rear end positions, the alignment device 1- is delayed or advances too much. If the front end of the frame 3 is detected by the intermediate position sensor 73, the alignment device is assumed to be in an operable speed state and the operation is continued. The rotational speed of the drive motor 11 can be adjusted according to the detection sensor 73.

The second clamp device 1 is installed close to the outside of the main lift device LL, and as shown in FIG. 12 and FIG. 74.74 is being constructed. The link mechanism 74 has a pair of guide frames 75.7 on both sides.
5, and slider 7 between this frame 75°75
6.76 are slidably accommodated, and a piston rod of a clamp cylinder (not shown) is connected to each one of the sliders 76.

Further, a ring block 77.77 is fixed to the center of the link mechanism 74.74 in the longitudinal direction.
．． A swing link 78.78 is rotatably connected to the upper part of the lever 77, and a lever 79.79 having one end pivotally connected to a slider 76.76 is rotatably connected to both ends of the swing link 78.78.

On the other hand, an abbreviated link joint 80 is fixed to each slider 76, a connecting piece 81 is erected on the joint 80, and a clamp arm 82° 82 is fixed to a pair of front and rear connecting pieces 81.81. has been done. As shown in FIG. 12, the clamp arms 82, 82 are arranged in a substantially V-shape in which the distance between the arms gradually increases toward the rear, and a clamper 83, which is made of an elastic member, is disposed inside the front and rear ends of the clamp arms 82, 82. 83
are provided protrudingly so that the side members 84, 84 of the test vehicle 5 can be pressed from the outside.

Further, the third clamp device LL is the main lift device, LL.
The main lift device, the third clamp device 21- located in front of the LL, is mounted as shown in FIGS. 14 and 15. A substrate 85 is fixed between the front ends of the rack frame 32 and the under frame 35. A pair of bearings 86, 86 are fixed to both left and right ends of the base plate 85, and a guide rod 87, 87 is slidably fitted to these, and the rod 87, 87 has both ends connected to sleeves 88, 88. It is fixed to the eight movable plates via , so that it can move together with the eight movable plates.

On the other hand, a bracket 90 is fixed to the lower end of the substrate 85, a base of a lift cylinder 91 is connected to the bracket 90, and a movable plate 89 is attached to the tip of the piston rod.
The eight movable plates can be moved up and down by fixing a projecting plate 92 protruding from the upper end of the plate. A bracket 93 is fixed to these eight movable plates, a base of a clamp cylinder 94 is rotatably connected to the bracket 93, and one end of a lever 95 is rotatably connected to the tip of the piston rod. ing.

A pair of bearings 96 and 96 are fixed to both ends of the overhanging plate 92, and a swing shaft 97 is rotatably supported between them. The other end of the lever 95 is fixed to the substantially central shaft of the shaft 97, and one end of a clamp arm 98. The rear end surface can be pressed.

On the other hand, the third clamp device 24 located at the rear of the main lift device λ±9 has substantially the same configuration as the front clamp device as shown in FIGS. 16 and 17, and has corresponding components. The same symbols are used. That is, this clamp device 24 fixes a substrate 85 to a front plate 100 of a sub-lift device 25 on the rear installation side, which will be described later, and allows the upper end of a clamp arm 98 to press the front end surface of the rear wheel house 101.

the sub-lift device M; 25 is the third clamp device;
1-, 14-, and the sub-lift device 1 located at the front is a cross beam installed between base frames 8 and 8, as shown in FIGS. 18 and 19. A lower table 104 of the front table lifter 2 11 is fixed onto the table 102. The front table lifter duplex 1 is movable up and down via a lift cylinder (as shown), and a frame 106 made of a plurality of steel materials is installed above the upper table 105.

At both left and right ends of the frame 106, there are frames 107 and 107.
An air bearing 10 is mounted on a support plate 108° 108 fixed to the upper end of this frame 107° 107.
9,109 is installed. Compressed air is supplied to the bearings 109 and 109, and by blowing the air onto the support plates 108, 108, a minute lift is possible, and the air float is normally stopped and the plates 108,
108 and is stationary.

In addition, lift blocks 110, 110 are erected in the center of the bearings 109, 109, and the upper ends of the lift blocks 110, 110 are connected to the under suspension arm 111 on the front wheel side of the test vehicle 5.
111, the arms 111, 111 can be pushed up by the amount of displacement when the vehicle is actually running.

112. 112 is an L-shaped metal fitting with one end fixed to the air bearing 109° 109, 113° 113 is a latch metal fitting fixed to the upper center of the frame 106, and these metal fittings 112
．． Springs 114, 114 are stretched between the rollers 113, and the peripheral surfaces of the air bearings 109, 109 are normally connected to the rollers 11, which are erected on the support plates 108, 108.
5,115.

In the figure, 116 is a construction board fixed to the front of the frame 106,
A cylinder 117 is attached to the lower part of the chain plate 116 facing upward, and a wide engagement plate 118 is attached to the tip of the piston rod.
is fixed. The test vehicle 5 is placed on the engagement plate 118.
An engaging protrusion 119 is provided which can engage with the lower frame of the vehicle 5 to prevent the vehicle 5 from falling forward if it loses its balance on the vehicle position alignment device. In the figure, 120.
120 is a guide rod connected to the engagement plate 118.118, and these are connected to the sleeve 12 fixed to the construction plate 116.
1,121.

On the other hand, the sub-lift device L5- located at the rear is the 20th
As shown in the drawings and FIG. 21, it is configured substantially the same as the sublift device 2j- in the front position, and corresponding components are denoted by the same reference numerals. That is, this sub-lift device L1 has a pair of guide rails 122, 122 fixed on a plurality of cross beams 102, and a slide guide fixed to a fixed frame 123 integrated with the lower table 104 is attached to the rails 122, 122. 124,124
are slidably engaged.

Cross beam 10 between the guide rails 122, 122
2, a drive cylinder 12 is installed in the same direction as the rail 122.
5 is fixed, and by connecting the tip of the piston rod to the fixed frame 123, the sub-lift device above the frame 123 can be moved in the front and rear directions according to the vehicle type and model signal input to the cylinder 125. I have to. In the figure, 216- is the rear table lifter,
It can be raised and lowered by a lift cylinder (not shown).

On the other hand, wheel alignment measuring device LfL.

17- are installed on both the left and right sides of the front and rear sub-lift devices 2i, and among these, the front wheel alignment measuring device ``-'' is installed on the front sub-lift device 25 as shown in FIGS. 22 and 23. A guide rod 128 is fixed to the side of the frame 106 with a pair of brackets 127, 127.

A bearing 130° 130 fixed to the side end surface of the movable frame 129 is slidably fitted into the guide rod 128, and a fixing fitting 131,
A pair of guide rods 132 , 132 are installed in parallel in the same direction as the length direction of the frame 106 via the guide rods 131 . This guide rod 132 has a stem. id bearing 1
33, 133 are slidably fitted, and the bearing 13
A sensor frame 134 to which the rods 3 and 133 are fixed is provided so as to be movable coaxially with the rod 132.

On the other hand, a bracket 1 is attached to the outer end of the upper surface of the movable frame 129.
35 is fixed to the bracket 135, the base end of a sensor cylinder 136 is fixed to the bracket 135, and the tip of the piston rod is connected to an upright piece 137 of the sensor frame 134. A pair of set plates 138, 138 are fixed to the upright piece 137 in a spaced manner, and a displacement measurement sensor 139 such as a magnetic scale is attached to these.

In this case, three sensors 139 are used in the embodiment,
Of these, two of the 13 sensors are placed apart on the same horizontal plane, and one of the 13 sensors is used in common, while the remaining 13 sensors are placed on the horizontal plane vertically above the 3 sensors. It is installed. Then, by pressing these sensors 139 via the sensor cylinder 136 against the end surface of the brake disc 140 or brake drum, which is the wheel alignment measuring section of the test vehicle 5 housed in the alignment device stop, the sensors 139 are arranged in parallel in a horizontal position. The toe value is measured by the displacement difference between the two 13 sensors installed vertically, and the camber angle is measured using the two 13 sensors installed vertically. are displayed on the appropriate display.

In the figure, reference numeral 141 denotes a bracket protruding from the lower side of the frame 106, which supports the lift cylinder 142 vertically.The tip of the piston rod is fixed to the movable frame 129, and the frame 129 is It can be moved up and down.

On the other hand, as shown in FIGS. 24 and 25, the rear wheel alignment measuring device LL has substantially the same configuration as the front wheel measuring device E, and corresponding parts are designated by the same reference numerals. ing. That is, this measuring device U is arranged close to both left and right sides of the frame 106 of the rear sub-lift device L1, and one end of the pair of links 143, 143 is connected to the tip of the piston rod of the sensor cylinder 136, and the other end is connected to the tip of the piston rod of the sensor cylinder 136. Sensor block 1 with sensor 139 attached
44.144. Note that, for convenience, only two sensors 13 for toe value measurement are shown in the figure.

In addition, 145 in the figure is a hydraulic unit installed at the front end of the base frame 8.8, 146 is a work step provided facing the front and rear wheels of the test vehicle 5, and 147 is a cable conveyor.

(Function) The vehicle position alignment device 7- configured as described above is normally connected to the traveling rails 6a, 6a as shown in FIGS. 1 and 2.
It stands still at the upper starting end position, that is, at the upstream side of the transport conveyor 1 in the transport direction, and waits for the test vehicle 5 to be brought in after completion of assembly.

In such a case, in the main lift device LP, the central table lifter 11 is contracted and placed at the lowest position, and the mounting table 47 above it maintains the lowest position, so that the movement area of the hanger 2 is It is retreating downwards. An air bearing 46 is attached to the lower part of the table 47.
46 stops the air float and base plate 45.
45 and maintains its stationary position, while the intermediate frame 38, which is integral with the table 47, is centered on the under frame 35 by pressing both sides of the lock plate 41 with the piston rods of the lock cylinders 43 and 43. and maintains its original position.

In addition, the first clamp device, L2L beam lift cylinder 61
A clamp cylinder 62 reduces the piston rod, and a pair of left and right clamp arms 67 are linked to these.
．． 68 is retracted below the moving range of the hanger 2, as shown by the solid line in FIGS. 9 and 10, and remains stationary with its upper end facing outward.

In addition, the cylinder 71 installed near the clamp arm 67 also has a reduced piston rod, and the roller 72 and sensor 73 that move together with the rod are positioned at the lowest position and are retracted below the movement range of the hanger 2. I'm letting you do it. on the other hand,
In the second clamp device L1, the piston rod of a clamp cylinder (as shown) is normally extended, and the slider 76 of each link mechanism 74, 74 linked to the cylinder is extended.
．． 76 is separated by the maximum distance. Therefore, the clamp arm 8 whose both ends are connected to these sliders 76 and 76
2.82 is stationary at a position outwardly away from the accommodation position of the side member 84.84 on the mounting table 47, as shown by the solid line in FIG.

Furthermore, the third clamp device NLL has a lift cylinder 91 and a clamp cylinder 94 that reduce the piston rod,
The movable plate 89 linked to the lift cylinder 91 is placed at the lowest position, and the clamp arm 98 is located below the moving range of the hanger 2, and remains stationary in an upward diagonal position as shown in FIGS. 15 and 17. are doing.

In addition, the sub-lift device L1 is a front and rear table lifter 1.
03.127 is placed at the lowest position, the lift block 110 at its upper end is retracted below the moving area of the hanger 2, and the air bearing 109 located directly below the block 110 stops the air float. , is seated and stationary on the support plate 108.

In addition, the rear sub-lift device L-shi reduces the piston rod of the drive cylinder 125 installed below it, and the components above the fixed frame 123 are removed from the cross beam 1.
02, it is located at the rearmost position.

On the other hand, wheel alignment measuring device LL.

LL, the piston rod of the lift cylinder 142 is in the contracted state, the movable frame 129 is placed at the lowest position, and the frame 12
Thirteen sensors installed on the mounting table 47 are waiting below the storage height of the brake disc 140 on the mounting table 47, and the sensor cylinder 136 has a reduced piston rod, and the above-mentioned sensors that move together with the rod are Thirteen brake discs 140 are kept stationary at positions separated from the end surface of the brake disc 140.

Under such circumstances, when the test vehicle 5 mounted on the hanger 2 approaches the standby position of the vehicle position matching device I-, for example, a predetermined position behind the base frame 8 with the rear end of the base frame 8 as a reference position, the The situation is detected by an appropriate position sensor, and the drive motor 11 is driven in normal rotation based on the signal.

The power of the motor 11 is transmitted from the reducer 16 to the wheels 9 via one chain and sprockets 17 and 18, and as the wheels 9 run on the running rails 6a, 6a, the alignment device move in the same direction as the transport direction.

Then, before and after driving the motor 11, the cylinder 71
The piston rod of the roller 72 is extended and the piston rod of the roller 72 is extended.
The sensor 73 rises, and when the roller 72 comes into contact with the lower surface of the under frame 3 of the hanger 2, the rise is stopped. A slight gap is formed between the sensor 73 and the under frame 3, and the sensor 73 confirms the synchronization between the hanger 2 and the alignment device 7- through this gap.

That is, each of the sensors 73 arranged in the front and rear rows detects the front end position of the under frame 3 of the hanger 2, and the drive motor 11 can be controlled in accordance with the detection sensor 73. For example, if the front end position of the underframe 3 is detected by the sensor 73 at the frontmost position, the traveling speed of the vehicle position alignment device is too slow than the moving speed of the hanger 2, and if the front end position of the underframe 3 is detected by the sensor 73 at the rearmost position. If it is determined to be too early, the motor 11 and conveyor 1 are stopped as a synchronization mismatch. Furthermore, when the front end position of the underframe 3 is detected by the two sensors 73 at intermediate positions, these sensors 73 send a rotational speed correction signal to the motor 11 as a synchronous matching area, so that the hanger 2 and the matching device 7- allows for synchronous movement of

For example, when the front end position of the underframe 3 is detected by the sensor 73 located at the intermediate front, it is assumed that the alignment device 1- is slower than the hanger 2, and the motor 11 is urged to increase the rotational speed, and the sensor 73 located at the intermediate rear If the sensor 73 detects this, the alignment device 2 determines that the movement is progressing and prompts the motor 11 to change its rotational speed range.

After the synchronous movement of the hanger 2 and the alignment device 1- has been carried out in this manner, the main lift device T1. LL rises. That is, the central table lifter 28 of the device 2 operates after the synchronized movement and lifts up the upper table 29 to the position just before the full lift, and the table 2
Move 9 or more frames simultaneously. Then, the mounting table 47 at the upper end of the main lift device 1 is attached to the under frame 3.3.
The top plate 52 accommodates the bottom of the test vehicle 5 mounted on the hanger 2°, and is pushed up to transfer the vehicle 5 from the hanger 2 onto the mounting table 47.

At that time, the weight and impact acting on the mounting table 47 are as follows:
Air spring 36 and guide bush 34 that support this below
It is also absorbed through the guide rod 33, and also absorbs the vibrations and oscillations accompanying the subsequent travel of the alignment device, thereby forming a stable accommodation state for the vehicle 5.

On the other hand, such a main lift device 11! The first and third clamp devices 2-, L, LIL operate before and after the operation. Of these, the first clamp device flL extends the piston rod of the lift cylinder 61 upward after executing the above-described synchronous movement 1, and raises the bridge frame 58 connected to the upper end of the rod together with the bearing 59 and the clamp cylinder 62. Then, the clamp arms 67 and 68 attached to the rotating shaft 60 which are not supported between the bearings 59 and 59 are moved simultaneously, and these are raised to a position outside the under frame 3 as shown by the imaginary line in FIG. Wait at that full lift position.

In addition, the third clamp device L (is the first clamp device W12L)
2. At approximately the same time as the operating timing of -, the screw I~n rod of the lift cylinder 91 is extended, and the eight movable plates whose upper ends are connected to the rod are raised together with the clamp cylinder 94, and the bearings fixed on the overhanging plate 92 are raised. A clamp arm 98 fixed to a swing shaft 97 between 96 and 96 is raised together.

Then, around the time when the clamp arm 98 stops rising, the piston rod of the clamp cylinder 94 is extended and the lever 95 pivotally attached to the tip of the rod is pushed up, so that the swing shaft 97 to which the other end of the lever 95 is fixed is fixed. The clamp arm 98.98, whose base end is fixed to the shaft 97, is rotated inward around the shaft 97, and the upper ends thereof are pressed together as shown by the imaginary lines in FIGS. 15 and 17. Then, the front and rear wheel houses 99 of test vehicle 5
, press down the rear end surface or front end surface of iol.

In this case, a signal related to the type and model of each test vehicle 5 is input in advance to the drive cylinder 125 installed below the sub-lift device 2j-, and the cylinder 125 is operated based on this signal. Then, by pushing the sub-lift device 11 connected to the tip of the piston rod forward a predetermined distance via the guide rail 122 and slide guide 124, the clamp arm 9
8 and 98 are adjusted.

In this way, the test vehicle 5 on the mounting table 47 is fixed to the front and rear wheel houses 9 by each pair of clamp arms 98.
When the front and rear end surfaces of the mounting table 47 are clamped, the air bearing 46 attached to the lower part of the table 47 is air-floated for a certain period of time. rotation is possible.

Therefore, the mounting table 47 is mounted on the clamp arm 9.
8, 98 and the test vehicle 5, and moves in the front and rear directions. That is, the clamping forces acting on the front and rear end surfaces of the wheel houses 99 and 101 by the clamp arms 98 and 98 actually act in different directions depending on the position of the vehicle on the mounting table 47, and for this reason, each clamping force This causes an imbalance in the sum of rotational moments between the bearing 49 and the bearing 49. Therefore, the mounting table 47 moves in the direction of removing the unbalance with the bearing 49 as the center, that is, in the direction of asymptotically approaching the center line of the vehicle 5 on the table 47 in the longitudinal direction to the reference line in the same direction of the alignment position I-. The bearing guide 48 guides this rotation.

In this way, the mounting table 47 performs a compound movement of rotation in the horizontal direction and movement in the longitudinal direction, while gradually attenuating the movement, and returns to the above-mentioned balanced position, that is, the test vehicle 5
It stops at a position where the center line coincides with the reference line of the matching position or is very asymptotic. The air float of the air bearing 46 is then stopped, and the bearing 46 is seated on the base plate 45, thereby maintaining the stationary position.

On the other hand, in the third clamp device U, when the stationary state of the mounting table 47 is restored, the piston rods of the lift cylinder 91 and the clamp cylinder 94 are reduced, and the upper ends of the clamp arms 98 are separated from the front and rear end surfaces of the wheel houses 99 and 101. By separating, the clamps are released and the hanger 2 is pulled down to return to its original position. Even in this case, since the test vehicle 5 is seated and stationary on the mounting table 47 as described above, the stationary position of the vehicle 5 does not change when the third clamp device U releases the clamp.

Thereafter, the piston rods of the clamp cylinders 62 of the first clamp device 11, which are waiting on both sides of the hanger 2, are extended, and the links 6 pivotally attached to the ends of the rods are actuated to extend.
6 and push around the rotating shaft 60 to which the other end of the link 66 is fixed, the clamp arms 67 and 68 whose base ends are fixed to the shaft 60 are fixed to the shaft 60.
10, and their upper ends are positioned above the sparkling plate 69 of the test vehicle 5 housed on the mounting table 47, as shown by the imaginary line in FIG.

In this case, since the embodiment deals with a four-door vehicle, the width dimensions of the clamp arms 67 and 68 differ depending on the lengths of the six Kiraking plates corresponding to the front and rear doors.

Next, the piston rods of the pair of lock cylinders 43 provided on the under frame 35 are contracted, and the engagement with the lock plate 41 from both sides is released, so that the intermediate frame 38 can be moved along the mounting rail 37. At the same time, the second clamp device, each link mechanism 74, 74 of LL
The piston rod of each clamp cylinder (path shown) that drives the cylinder is compressed.

In this way, each one of the sliders 76 linked to the cylinder moves inward along the guide frame 75, and the lever 76 connected at one end to the slider 76 moves inwardly along the guide frame 75.
12 pushes around the swinging link 78 pivotally connected to the other end, the link 78 rotates as shown by the imaginary line in FIG. 12, and the lever 79 connected to the other end of the swinging link 78 The other slider 76 is then drawn inward.

That is, each pair of sliders 76 of the links VaWl 74, 74 move close to each other, and by pulling the clamp arms 82, 82 connected at one end to them inward, the clamper 83 protruding inwardly of the sliders 76 moves close to each other, and the clamper 83 protruding inside the sliders 76 moves close to each other. 5
The side frame 84, 84 of is clamped from the outside.

In this case, each link R side 74 is configured in the same way, and the amount of displacement inward of the clamp arms 82 and 82 is set to be the same, so the intermediate frame 38 is in the moving direction of the hanger 2 with respect to the under frame 35. The vehicle 5 stands still at a central position in the orthogonal direction, and is clamped at this position. Therefore, the center line of the vehicle 5 in the longitudinal direction coincides with the center line of the alignment device I- in the same direction with the under frame 35 as a reference, or is very asymptotic.

After aligning the positions of the test vehicle 5 and the alignment device in the longitudinal direction and orthogonal direction, the air bearing 4
6 is placed on the air float again, and the loading table 47 is again rotatably supported by four bearings. After making the final alignment adjustment between the vehicle 5 and the equipment, the air float is stopped and the final alignment adjustment is carried out. maintain the condition. and,
After that, the caliper 42 is brake-actuated, and the pair of clamping pieces press the engagement plate 40 integral with the intermediate frame 38 from both sides to clamp the frame 38, and instead, the piston rod of the clamp cylinder of the second clamp device LL is clamped. The sliders 76, 76 are moved apart from each other and the clamp arms 82, 82 are moved together, and the clamper 83, 83 is retracted to the outside of the side member 84, thereby releasing the clamping operation by the device L1. do. Even if the clamping operation of the second clamping device L1 is released in this way, the intermediate frame 3
8 is maintained, the alignment adjustment position of the test vehicle 5 does not change due to the release.

Under these circumstances, the central table lifter 11 of the main lift device LL is further lifted up, and just before the upper surface of the six Kiraking plates of the test vehicle 5 contacts the upper end of the clamp arm 67 waiting above, The position is detected by a position sensor such as a proximity switch, and lifting of the table lifter L& is stopped. Therefore, a small gap is maintained between the upper surfaces of the six Kiraking plates and the upper end of the clamp arm 67.

In this way, the sub-lift device L1. , LfL's air bearings 109, 109 are floated from the support plates 108, 108, and the front and rear table lifters L
When raising 11°, lift block 110.11
As shown in FIG. 18, the upper surface of 0 engages with the lower part of the under suspension arm 111 of the front and rear wheels and pushes it up.

As a result, the arms 111, 111 are lifted up while swinging in the horizontal direction via the air bearings 109, 109, and the brake discs 140, 140 connected to the arms 111, 111 also follow this movement.
The measuring end face is raised as shown in FIG.

And, such an under suspension arm 11
Due to the displacement of 1,111, the sparkling plate 69 is also pushed up slightly, and this displacement is allowed by the gap formed between the upper ends of the clamp arm 67. On the other hand, when the upward displacement of the arms 111 and 111 reaches a known height when the test vehicle 5 is actually running, the lifter z
, LifL is stopped from rising, and the suspension lift-up state of the test vehicle 5 is maintained.

Under these conditions, wheel alignment measuring device 1
The piston rod of the lift cylinder 142 of [, 2LL is extended, and the movable frame 1 connected to the tip of the piston rod
29 rises and the sensor cylinder 136 on the frame 129
13 measurement sensors move simultaneously. Then, when the sensor 139 does not reach a position on the side of the end surface of each brake disc 140, the extension operation of the piston rod is stopped, and instead, the piston rod of each sensor cylinder 136 extends and moves in unison with the rod. sensor 139
is pressed against the end surface of the brake disc 140.

In this case, each pair of 13 sensors arranged horizontally measures the toe value, and each pair of 13 sensors arranged vertically measures the camber angle, and these measured values are calculated separately as appropriate. displayed on a suitable display. In this case, as described above, these measured values are set so that the brake disc 140, which is the object to be measured, is set in a state similar to when the vehicle is running, so that actual wheel alignment measurements can be performed on the production line. After these measurements, the operator steps on the step 146 near the front and rear wheels and records the toe value and camber while looking at the relevant section of the display.
Adjust the angle.

In this way, when each adjustment of the toe value and camber angle is completed, the piston rod of the sensor cylinder 136 is reduced, and the piston rod of the lift cylinder 142 is further reduced to return them to their original positions, while the sub-lift device LL Front and rear table lifter f.

126 is lifted down to release the lift block 110 from the under suspension arm 111. Then, the air bearing 109 is air-floated for a certain period of time, and the L-shaped fitting 112 and the spring 114
Lift block 1 when mounting suspension via
10 deviations are removed and the original state is restored.

On three sides, each piston rod of the lift cylinder 61 and clamp cylinder 62 of the first clamp device U is reduced, the clamp arms 67 and 68 are lowered to restore their original state, and the central table lifter i1 of the main lift device 21 is lifted. The test vehicle 5 is moved from the mounting table 47 to the hanger 2, and the vehicle position alignment device 1j7 is separated from the hanger 2.

Then, when the central table lifter 28 has returned to its original state, the brake operation of the caliper 42 is released, and instead of releasing the pressure contact of the engagement plate 40 due to the temporary clamping, the piston rods of the lock cylinders 43° 43 are extended, and these rods are By pressing both sides of the lock plate 41, the intermediate frame 38 to which the plate 41 is fixed is centered with respect to the frame below the under frame 35,
restore its original state. In addition, the air bearing 46 is air-floated for a certain period of time, and the floating table 4
7 is moved in the front-rear direction or rotated in the horizontal direction via centering springs 50 and 51 to remove deviation when the vehicle is accommodated, and is centered on the frame body below the intermediate frame 38 to restore its original state. Recover.

In this way, the test vehicle 5 after the adjustment is completed with the hanger 2
The vehicle position alignment device 1-, which has been transferred to the original position and transported to the downstream side thereof, has recovered its original state.After stopping the drive motor 11, the vehicle position alignment device 1- is reversed and travels upstream on the traveling rail 6a, and when it returns to its original position, it is driven. Stops and waits for next operation.

(Effects of the Invention) As described above, the vehicle position alignment device of the present invention transfers a vehicle transported by a transport conveyor to a mounting table that moves synchronously directly below the conveyor, and moves the vehicle on this mounting table. Equipped with a main lift device that rotates with the table and moves it in the front, back, left and right directions to align the front, back, left and right directions of the vehicle with the base of the lower part of the loading table. can be reliably and orderly positioned in a predetermined direction on the mounting table, and the measurement process and production process for each part of the vehicle can be carried out smoothly and easily depending on the attitude of the vehicle.

Therefore, in the vehicle position alignment device of the present invention, a mounting table on which a vehicle can be mounted is horizontally rotatably supported at the center of the intermediate frame, and a lower part of the mounting table is always supported on the intermediate frame. A plurality of air bearings are mounted on the mounting table, and a centering spring is placed between the mounting table and the intermediate frame to regulate the longitudinal and lateral positions of the mounting table with respect to the intermediate frame when the air bearings are air floated. The intermediate frame is provided so as to be movable relative to the under frame below it, and a lock plate protruding from the center of the lower part of the intermediate frame is normally restrained at the center position on the under frame to center the intermediate frame relative to the under frame. By equipping the main lift device as described above, centering of the loading table and the intermediate frame can be achieved with a simple structure.

Note that the vehicle position alignment device of the present invention moves integrally with the main lift device to at least one of the front and rear sides of the main lift device,
A sub-lift device capable of lifting up the suspension of a vehicle housed on the mounting table to the actual running height of the vehicle is installed, and a wheel alignment measuring device movable together with the device is disposed in the vicinity of the sub-lift device, and By installing the measurement sensor installed in this measurement device so as to be movable toward the wheel alignment measurement section of the vehicle, highly reliable wheel alignment measurement results can be obtained under conditions similar to when the actual vehicle is running. Moreover, by selecting the measuring portion for the machined surface of a brake disc, brake drum, etc., it is possible to obtain highly accurate measurement results.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the present invention, FIG. 2 is a front view showing an embodiment of the present invention, FIG. 3 is an explanatory diagram showing the conveyance state of a vehicle by a hanger, and FIG. FIG. 5 is a front view showing an example of the main lift device applied to the invention, and is a cut end view taken along line A-A' in FIG. 4, with some parts omitted.
6 is an enlarged front view of an example of a lock cylinder applied to the present invention, FIG. 7 is a plan view of FIG. 4, and FIG. 8 is a plane taken in the direction of arrow B-B' in FIG. 4. 9 are front views showing an example of the first clamp device applied to the present invention,
10 is a right side view of FIG. 9, FIG. 11 is an enlarged sectional view of a part of the vehicle, and FIG. 12 is a second view of the vehicle applied to the present invention.
FIG. 13 is a plan view showing an example of a clamp device, FIG. 13 is a left side view of FIG. 12, FIG.
16 is a front view showing an example of the rear-positioned third clamp device applied to the present invention, and FIG. 17 is the first
6 is a right side view, FIG. 18 is a front view showing an example of a front sub-lift device applied to the present invention, and FIG.
8 is a plan view, FIG. 20 is a plan view showing an example of a sub-lift device placed at the rear applied to the present invention, and FIG.
22 is a front view of the figure, and FIG.
3 is a front view of FIG. 22, FIG. 24 is a plan view showing an example of a rear wheel alignment measuring device applied to the present invention, and FIG. 25 is a front view of FIG. 24. 1...Transportation conveyor, 5...Vehicle, IL...
・Main lift device, 35... Under frame, 38... Intermediate frame, 41... Lock plate, 46... Air bearing, 47... Mounting table, 50.51... Centering spring patent applicant
Nissan Motor Sales Co., Ltd. Drawing Cleaning (no changes to the contents) Figure 74 Figure 1''side'' Cleaning IF (Changes to the contents Figure 16 Figure 22 Figure 23 Figure 24 Figure 25 Procedural Amendment Form (Relationship between self-effect 2, name of invention 3, and the year of the person making the negative proof) Patent applicant □ Takeo Arai 2 (399) Takara-cho, Kanayō-ku, Yokohama-shi, Kanagawa Prefecture Nissan Motor Co., Ltd. Representative Yutaka Kume 4; Agent: Sankyo Building 3, 25-25 Higashiikebukuro IT 48-10, Toshima-ku, Tokyo
No. 16 drawing

Claims (2)

[Claims] (1) Transfer the vehicle transported by the transport conveyor to a mounting table that moves synchronously directly below the conveyor, and rotate and move the vehicle on this mounting table together with the table in the front, rear, left, and right directions. A vehicle position alignment device characterized by being equipped with a main lift device that aligns the front, rear, left and right directions with respect to the lower base of a loading table. (2) The above-mentioned rack table is horizontally rotatably supported at the center of the intermediate frame, and a plurality of air bearings, which are normally seated on the intermediate frame, are installed at the bottom of the rack table, and these rack tables are connected to each other. A centering spring is placed between the intermediate frame and the centering spring that regulates the longitudinal and lateral positions of the mounting table with respect to the intermediate frame when the air bearing is air floated, while the intermediate frame is provided so as to be movable relative to the under frame below it, so that the intermediate frame is always movable. is equipped with a main lift device that centers the intermediate frame with respect to the under frame by restraining a lock plate protruding from the center of the lower part of the intermediate frame at a central position on the under frame. The vehicle position alignment device according to scope 1.