JPH092258A - Carriage conveying device - Google Patents

Abstract

PURPOSE: To easily bring down a carriage, driven by friction wheels, from a travel rail. CONSTITUTION: A driving friction wheel 41 and a driven friction wheel 42 are disposed in a required place along a truck travel rail 11 extended in a longitudinal direction, in such a way as to be closable while holding a truck 14 from both lateral sides. Both friction wheels 41, 42 are energized to close by a fluid pressure cylinder 55 in order to generate carriage conveying frictional force between the carriage 14 and both friction wheels 41, 42. The carriage travel rail 11 is composed of a laterally movable rail for receiving the wheels of the carriage 14 held between the driving and driven friction wheels 41, 42, and a fixed rail separated from and connected to the laterally movable rail. Both friction wheels 41, 42 are fitted to a movable frame 44. The movable frame 44 is vertically oscillated by a fluid pressure cylinder 85 so that both friction wheels 41, 42 are moved into an operating position high enough to hold the carriage 14 in between and a nonoperating position below.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carriage transporting apparatus for transporting a carriage on which a material is carried along a fixed path.

[0002]

2. Description of the Related Art As an apparatus of this type, for example, as disclosed in Japanese Patent Application No. 102865/1990, a bogie running rail extending in the front-rear direction is used to sandwich the bogie from both left and right sides. A drive frictional wheel and a driven friction wheel that are arranged so that they can be opened and closed by a vehicle, and both friction wheels are urged to be closed in order to generate a frictional force for transporting the vehicle between the vehicle and both friction wheels. It is known that it is equipped with a force means.

[0003]

In the above apparatus, for example, when a defective product is found in a conveyed product placed on a truck and the truck is to be lowered from the rail, for example, it is necessary to lift the truck by a lift. I couldn't easily get the dolly off.

An object of the present invention is to solve the above problems,
An object of the present invention is to provide a trolley carrier that can easily unload a trolley from a rail.

[0005]

SUMMARY OF THE INVENTION According to the present invention, there is provided a carriage transporting apparatus in which a carriage friction rail extending in the front-rear direction is arranged so that the carriage can be opened and closed by sandwiching the carriage from both left and right sides. And a driven friction vehicle and a urging means for urging the two friction wheels to be closed so as to generate a trolley-carrying frictional force between the trolley and the two friction wheels. The traveling rail is composed of a left-right movable rail that receives the wheels of the carriage that is sandwiched by the drive and driven friction wheels, and a fixed rail that is separated and connected to this. Both friction wheels are attached to the movable frame, A frame actuating means for vertically moving or vertically swinging the movable frame is provided so that both friction wheels can be moved between an operating position at a height where the carriage can be sandwiched and a non-operating position below this. It is characterized in.

Further, the urging means is movably supported on the movable frame and is mounted so as to slide with the driving friction wheel, and the driven friction wheel is mounted via a horizontal swing arm. When,
And a fluid pressure cylinder having a piston rod attached to the slide table and connected to the swing arm.

[0007]

In the bogie carrier according to the present invention, the bogie traveling rail is composed of a laterally movable rail for receiving the wheels of the bogie sandwiched by the driving and driven friction wheels, and a fixed rail which is separated and connected to the rail. Both friction wheels are mounted on a movable frame, and the movable frames are vertically moved or vertically rocked so that both friction wheels can be moved between an operating position at a height where the carriage can be sandwiched and a non-operating position below this position. Since the vehicle is equipped with a frame actuating means that allows the wheels of the trolley to be received by the movable rails, when both friction wheels holding the trolley are opened and the movable frame is placed in the non-actuated position, both friction wheels are trolleyed. Since it is at a lower level, the movable rail can be moved to either the left or right direction while the trolley is being placed.

Further, the urging means is movably supported on the movable frame and mounted so as to slide with the driving friction wheel, and the driven friction wheel is mounted via the horizontal swing arm. When,
Since a fluid pressure cylinder having a piston rod attached to a slide table and connected to a swing arm is provided, when the driven friction wheel is pressed against the truck by the operation of the fluid pressure cylinder, the reaction friction causes the driving friction wheel to move the truck. The slide table is moved in the direction to press it, and the movement of the slide table is stopped when the pressing forces of the driving friction wheel and the driven friction wheel are balanced, so the fluid pressure of the fluid pressure cylinder does not act on the slide table. Therefore, the slide table can be freely moved in the left-right direction.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

In the following description, front and rear are referred to as a front side (upper side in FIG. 1) on which a conveyed carriage advances, and a rear side (upper side in FIG. 1) is opposite to this side, and left and right are referred to as front side. The left and right sides are referred to as left and right (right and left in FIG. 1).

Referring to FIG. 1, the first truck traveling rail 11 and the second truck traveling rail 12 extending in the front-rear direction via the truck shifting station S, and the truck shifting station S.
In the figure, there is shown a carriage transfer conveyor 13 extending in the left-right direction and arranged so as to straddle the first and second carriage travel rails 11 and 12.

On the first bogie traveling rail 11, a preceding bogie 14 stopped at the bogie transfer station S and another succeeding bogie 14 behind it are placed. Trolley
14 includes a quadrilateral trolley body 15, a front wheel 16 and a rear wheel 17. At the center of the carriage body 15 in the width direction, the carriage body 15
Is provided with a friction plate 18 extending in the front-rear direction over the entire length thereof. Referring to FIG. 6, the friction plate 18 is in the form of a strip plate provided on the lower surface of the carriage body 15 in a hanging shape.

A carriage drive device 19 is arranged below the rear portion of the preceding carriage 14 and below the rear portion of the succeeding carriage 14, respectively. The distance between the two carriage driving devices 19 is equal to the entire length of the carriage main body 15. In addition to the cart drive device 18 shown in the figure, a cart drive device is arranged at required locations on the first and second cart travel rails 11, 12.

The first carriage running rail 11 includes a front movable rail 21 that receives the front wheels 16 of the preceding carriage 14, a rear movable rail 22 that receives the rear wheels 17 of the preceding carriage 14, and a front movable rail 21.
Connected to the front end of the front movable rail 21, the rear end of the front movable rail 21 and the middle fixed rail 24 connected to the front ends of the rear movable rails 22, and the rear end of the rear movable rail 22. It consists of rear fixed rails 25. Second trolley rail 12
Has the same structure as the first bogie traveling rail 11, and the same reference numerals as those of the first bogie traveling rail 11 are omitted and the description thereof is omitted.

The trolley transfer conveyor 13 is composed of a front and rear movable rail 2
A pair of front and rear endless orbits with an interval equal to 1 and 22 2
Has 6. Endless track 2 on each side
Left and right movable rails 21 and 22 are fixed to the upper surface of 6 at intervals equal to the rail intervals of the carriage traveling rails 11 and 12. Referring to FIGS. 2 and 3, the endless track 26 comprises an endless chain 27 and a number of slats 28 secured to it.

FIG. 2 and FIG. 3 show the first carriage running rail 11
Of the front and rear intersections of the carriage transfer conveyor 13 and the front and rear intersections, the front intersection is shown as a representative thereof.

A forward taper portion 31 is provided on the front end side surface of the front movable rail 21, and a rearward taper portion 32 is provided on the rear end side surface of the front fixed rail 23 facing the front movable rail 21. Further, a rearward taper portion 33 is provided on the rear end side surface of the front movable rail 21, and a frontward taper portion 34 is provided on the front end side surface of the intermediate fixed rail 24 facing the rear movable end portion. These tapered portions 31 to 34 are provided on the front movable rail 21.
This is for allowing the wheels 16 and 17 of the carriage 14 to be transferred between the adjacent rails without any trouble even if the vehicle is displaced from the front and intermediate fixed rails 23 and 24.

Front movable auxiliary rails 35 are provided from the front ends of both side surfaces of the front movable rail 21 over a required length, and correspondingly, front movable auxiliary rails 35 are fixed forward from the rear ends of both side surfaces of the front fixed rail 23 over a required length. An auxiliary rail 36 is provided. Further, rear movable auxiliary rails 37 are provided from the rear ends of both side surfaces of the front movable rail 21 for a required length, and correspondingly, rear fixed auxiliary rails 37 are provided from the front ends of both side surfaces of the intermediate fixed rail 24 for a required length. Rails 38 are provided. As a representative of these auxiliary rails 35 to 38, the front movable auxiliary rail 35 will be described in detail. On the upper surface of the front movable auxiliary rail 35, a horizontal portion 35a corresponding to the forward tapered portion of the front movable rail 21 and a portion after the horizontal portion 35a. An inclined portion 35b that is inclined so as to gradually lower as it goes is provided. Although not described, the remaining auxiliary rails 36 to 38 are similarly provided with horizontal portions and inclined portions.

Since the front movable rail 21 and the front and middle fixed rails 23 and 24 are provided with the tapered portions 31 to 34, respectively, the area of the rail tread surface is reduced.
Therefore, when the wheel 16 moves through the tapered portions 31 to 34, the surface pressure of the rail tread increases, but the increased amount is compensated by the flange 16a of the wheel 16 being received by the horizontal portion 35a. I am trying to do it.

On the rail tread surface of the front movable rail 21, a recess 21a is provided so as to be deepest at the central portion of the length, whereby the wheel 16 of the carriage 14 being conveyed by the conveyor 13 is provided.
Does not move on the front movable rail 21 carelessly.

The carriage drive unit 19 is shown in detail in FIGS.

The trolley drive device 19 includes a rubber tire type drive friction wheel 41 and a driven friction wheel 42 which are arranged so as to be opened and closed by sandwiching the friction plate 18 from both left and right sides, and both friction wheels 41 and 42 are attached. A rectangular plate-shaped slide table 43 and a rectangular frame-shaped movable frame 44 that supports the slide table 43 so that the slide table 43 can move left and right.

The drive friction wheel 41 is fixed to the output shaft of the motor 51. The motor 51 is mounted vertically on the lower surface of the slide table 43 so that the output shaft projects upward from the slide table 43. The driven friction wheel 42 is attached in the middle of the length of the substantially L-shaped swing arm 52. The base end of the swing arm 52 is attached to the upper surface of the slide table 43 by a vertical pin 53.

To the swinging end of the swinging arm 52, a piston rod of a friction wheel biasing fluid pressure cylinder 55, which is horizontally swingably mounted on the upper surface of the slide table 43 via a bracket 54, is connected. Further, along with the piston rod, the arm swing range adjusting bolt 56 is screwed into the swing end of the swing arm 52, and the arm swing range adjusting bolt 56 is closed with both friction wheels 41 and 42 closed. A stopper 57 is provided integrally with the bracket 54 so that the tip of the bracket abuts. Vertical axis guide rollers 58 are attached to the four corners of the lower surface of the slide table 43, respectively. Slide table
A front hanging plate 61 is provided at the center of the front edge of 43. The lower edge of the front hanging plate 61 is provided with a semi-circular cutout 62. A rear hanging plate 63 is provided at the center of the rear edge of the slide table 43.

The left and right frame members of the movable frame 44 are provided with a pair of front and rear support bars 71 so as to sandwich the slide table 43 from the front and back and to abut the guide rollers 58.
Two horizontal shaft support rollers 72, which respectively receive the front and rear edges of the slide table 43, are attached to the opposing surfaces of the support bars 71. A slide table retainer plate 73 is detachably attached to the upper surface of the support bar 71.
The slide table 43 can be removed from the movable frame 44 by removing 73.

The front support bar 71 is provided with a pair of left and right hanging L-shaped brackets 74, and a horizontal guide rod is provided at the tip thereof.
75 have been handed off. Sliding cylinder 79 on the guide rod 75
It has been fitted over. A compression coil spring 76 fitted on a guide rod 75 is interposed between the sliding cylinder 79 and both brackets 74. An annular groove (not shown) is provided on the outer peripheral surface of the sliding cylinder 79, and the notch 62 of the front hanging plate 61 is formed in the annular groove.
The edges are fitted. A fluid pressure cylinder for sliding to the right via a bracket 77 at the left end of the rear support bar 71.
78 is provided so that the piston rod faces the rear hanging plate 63.

A pair of vertical swing arms 81 are fixed to the front ends of the left and right frame members of the movable frame 44. Swing arm
The base of 81 is fixed to a horizontal rotation shaft 84 supported by a support frame 83 via a bearing 82. A movable frame working fluid pressure cylinder 85 is attached to the support frame 83, and its piston rod is connected to the front support bar 71.

A support bar 91 is provided diagonally below the movable frame 44.
And a pair of inverted L-shaped brackets 92 are provided on the upper surface of the bracket so that the front ends of the brackets 92 face the rear edge of the movable frame from above. A movable frame swing range regulating bolt 93 is screwed into the tip of the bracket 92 so that its height can be adjusted.

Next, the carriage transportation operation will be described.

The trolley 14 is sent to the transfer station S and, as shown in FIG.
The carriage 14 is stopped while being received by the front and rear movable rails 21 and 22. In this state, the movable frame 44 is located at the upper limit and is in a horizontal posture, the driving friction wheel 41 and the driven friction wheel 42 are closed, and the piston rod of the friction wheel urging fluid pressure cylinder 55 is Drive friction wheel 41 and driven friction wheel due to the fluid pressure.
The friction plate 18 is sandwiched by 42.

When the piston rod of the friction wheel biasing fluid pressure cylinder 55 is projected to swing the swing arm 52 clockwise, the driven friction wheel 42 is separated from the friction plate 18. In this state, the driving friction wheel 41 is in contact with the friction plate 18. Therefore, when the slide fluid pressure cylinder 78 is operated to move the slide table 43 to the right, the driving friction wheel is separated from the friction plate 18, and the driving friction wheel and the driven friction wheel are opened.

When the driving friction wheel 41 and the driven friction wheel 42 are opened, when the movable frame 44 is swung downward by the operation of the movable frame working fluid pressure cylinder 85, the driving friction wheel 41 is driven.
Even if the driving friction wheel 41 and the driven friction wheel 42 move so that the driving friction wheel 41 and the driven friction wheel 42 are located at a lower level than the friction plate 18, they do not interfere with the friction plate 18. Then, when the conveyor 13 is activated, the carriage 14 placed on the movable rails 21 and 22 is unloaded from the first carriage travel rail 11.

In order to place the carriage 14 on the conveyor 14 on the second carriage traveling rail, the movable frame 44 is installed in the reverse order of the above.
When the movable rails 21 and 22 carried by the conveyor 13 are connected to the fixed rails 23 to 25 with the driving friction wheel 41 and the driven friction wheel 42 open, the movable frame 44 faces upward. The driving friction wheel 41 and the driven friction wheel 42 are opposed to each other with the friction plate 18 sandwiched therebetween. The operation of the slide fluid pressure cylinder 72 is released, and the slide table 43 is moved to the left to bring the drive friction wheel 41 into contact with the friction plate 18. Then, the piston rod of the fluid pressure cylinder 55 for urging the friction wheel is retracted to swing the swing arm 52 counterclockwise, and the driven friction wheel 42 approaches the friction plate 18. ,
Eventually, it comes into contact with the friction plate 18 and is finally pressed.

When the driven friction wheel 42 presses the friction plate 18 to the right, the reaction force causes the slide table 43 to be pressed to the left, and the pressing force causes the driving friction wheel 41 to move.
The friction plate 18 is pressed by 18, and the friction plate 18 is sandwiched by the driving friction wheel 41 and the driven friction wheel 42.

When the driving friction wheel 41 is rotated by activating the motor 51, the driving friction wheel 41, the driven friction wheel 42 and the friction plate 18 are rotated.
The friction plate 18 pushes the friction plate 18 forward, and the carriage 14 is conveyed forward.

When the carriage 14 meanders to the left and right when the carriage 14 is conveyed, the slide table 43 is moved left and right accordingly, so that the carriage 14 is smoothly conveyed.

[0037]

According to the present invention, when the wheels of the truck are received by the movable rails and the friction wheels sandwiching the truck are opened and the movable frame is positioned at the non-operating position, the friction wheels will move. Since the level is lower than that of the dolly, the movable rail can be moved to either the left or right direction while the dolly is placed, so that the dolly can be easily lowered from the rail.
Furthermore, when the driven friction wheel is pressed against the carriage by the operation of the fluid pressure cylinder, the reaction causes the slide table to move in the direction in which the driving friction wheel presses against the carriage.
Since the movement of the slide table is stopped when the pressing forces of the driving friction wheel and the driven friction wheel are balanced,
Since the fluid pressure of the fluid pressure cylinder does not act on the slide table, the slide table can freely move in the left-right direction. Therefore, even when the carriage being transported meanders, the carriage can be smoothly transported.

[Brief description of drawings]

FIG. 1 is a plan view of a carriage carrier according to the present invention.

FIG. 2 is an enlarged plan view of a main part of a carriage traveling rail of the carriage conveying device.

FIG. 3 is a side view of the main part.

FIG. 4 is a perspective view of a carriage driving device of the carriage conveying device.

FIG. 5 is a plan view of a carriage driving device.

6 is a sectional view taken along line VI-VI of FIG.

FIG. 7 is a sectional view taken along line VII-VII in FIG.

[Explanation of symbols]

 11 Truck running rail 14 Truck 16 Front wheel 17 Rear wheel 21 Front movable rail 22 Rear movable rail 23 Front fixed rail 24 Middle fixed rail 25 Rear fixed rail 41 Drive friction wheel 42 Driven friction wheel 44 Movable frame 52 Swing arm 55 Fluid pressure Cylinder

Claims (2)

[Claims] 1. A driving friction wheel 41 and a driven friction wheel 42, which are arranged so that the carriage 14 can be opened and closed by sandwiching the carriage 14 from the left and right sides at a required position on the carriage running rail 11 extending in the front-rear direction.
And a urging means for urging the two friction wheels 41, 42 to close in order to generate a friction force for trolley transportation between the trolley 14 and the both friction wheels 41, 42. In the above, the truck traveling rail 11 receives the left and right movable rails 21 and 22 for receiving the wheels 16 and 17 of the truck 14 sandwiched between the driving and driven friction wheels 41 and 42, and the fixed rail 22 that is separated and connected to the rails 22 and 22.
-25, both friction wheels 41, 42 are mounted on a movable frame 44, and the friction wheels 41, 42 are located between an operating position at a height where the carriage 14 can sandwich the carriage 14 and a non-operating position below it. 2. A trolley carrier apparatus comprising frame actuating means for vertically moving or vertically oscillating the movable frame 44 so that the movable frame 44 can be moved by. 2. A biasing means is supported on a movable frame 44 so as to be movable left and right, and is mounted so that a driving friction wheel 41 slides with it, and a driven friction wheel 42 is mounted via a horizontal swing arm 52. Sliding table 43
Attached to the slide table 43 and swing arm 52
Hydraulic cylinder 55 with piston rod connected to
The cart carrier according to claim 1, further comprising: