JP3043157B2 - Transport equipment using carts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport equipment using a trolley, which is used for transporting an object to be transported on a fixed path on a floor side, for example.

[0002]

2. Description of the Related Art Hitherto, for example, Japanese Unexamined Patent Publication No. 2-209309 discloses a configuration for transporting a non-driven trolley on a fixed route.

In this conventional configuration, a transport device is provided above a fixed path on which a truck can travel, a brake device is provided below, and a transport device for the next process is provided below the brake device. The transport device is composed of a pair of left and right feed rollers that can freely contact the side surface of the cart, and a rotary drive device that is linked to these feed rollers. The brake device is composed of a pair of left and right brake rollers that can freely contact the side surface of the bogie, and a torque motor that applies a reverse rotation torque to the brake rollers. Is set to

According to such a conventional configuration, a large propulsive force is given to the carriage by forcibly rotating the two feed rollers abutting on both side surfaces of the carriage by the rotary driving device. The cart supporting the object can be transported on a fixed route. At this time, the bogie pushes and transports the group of bogies that have stopped before.

[0005] In the lower part of the fixed path, since the reversely rotating brake roller is in contact with both side surfaces of the bogie, a propulsive force acts in the reverse transport direction on the bogie, where the feed rotational force is reduced. Since it is larger than the reverse feed rotation force, the brake roller is rotated to the feed rotation side in accordance with the difference. As a result, the lower bogie is conveyed under a braking action, and therefore, the bogie group is conveyed in a tightly pushed state without a gap between the front and rear ends. Then, the cart pushed out from the brake device is carried out to the next process by the next transfer device.

[0006]

According to the above-mentioned conventional construction, in a work path section of a fixed path, while the carriages are arranged in a dense manner and conveyed over substantially the entire length of the work path section, the carriage is covered. Various operations can be performed on the conveyed object. However, when the same configuration is adopted for the non-work route,
The trolleys are arranged in a dense manner in the non-working path portion and are sequentially conveyed at a substantially constant speed, resulting in inefficient conveyance. Further, since the carts are densely arranged and conveyed over substantially the entire length of the non-work route, a large number of expensive carts are required, and equipment costs are increased.

It is an object of the present invention to provide a transport equipment using a trolley capable of returning (running) the trolley at a high speed in a non-work route portion.

[0008]

In order to achieve the above object, the present invention provides a transport equipment using a trolley, which is provided with a trolley supported and guided by a rail and capable of traveling on a fixed path, and facing the trolley outward. A pressure receiving portion is formed, and the fixed path travels along a work path section for performing work on a transported object supported by the carriage while traveling the carriage, and a carriage emptied by removing the transported article. and a non-working path section to the well in the non-working path section, the infeed device for imparting slow feeding force to the carriage acts on the pressure receiving portion, the receiving platform car fed by the feeding device An accelerating device that acts on the truck to apply a high-speed running force to the bogie; a deceleration device that acts on the pressure receiving portion to decelerate the bogie; and the pressure receiving device of the bogie that is decelerated by the decelerator. Act on part A feeding device for applying a low-speed feeding force to the truck is provided, and a stopper device with which the truck can freely contact is provided at a portion of the lower feeding device. The vehicle is configured to coast with the high speed running force applied by the acceleration device.

[0009]

According to the structure of the present invention, the acceleration device acts on the pressure receiving portion in a state where the bogie is positioned facing the acceleration device above the non-work path portion, so that the bogie can be mounted on the bogie.
A high-speed running force is applied, so that the bogie can coast by the high-speed running force on the non-work route. Then, by applying a speed reduction device to the pressure receiving portion of the bogie traveling at high speed, the bogie can be decelerated, so that the bogie is decelerated and then stopped by contacting the stopper device.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 to 5, a pair of left and right rails 1 are laid on a base frame 2 formed on the floor side, and the rails 1 form a fixed path 3. Here, the fixed path 3 includes a linear work path section 3A on the upper floor, a linear non-work path section 3B on the lower floor, and both path sections 3A,
A vertical transfer path 3C connecting the start and end of 3B,
It is formed in a loop by 3D.

The carriage 10 has a plurality of front and rear wheels 12 on both sides of a lower portion of a main body 11, and can be moved on the fixed path 3 by being mounted on the rail 1 via these wheels 12. On the main body 11, a support portion 13 for the transported object is provided so as to be able to move up and down. Further, both side surfaces of the main body 11 are formed on the pressure receiving portion 14, and the front and rear surfaces of the main body 11 are formed on the contact surface 15.

In the non-working path section 3B, an acceleration device 20 that acts on the pressure receiving section 14 to apply a high-speed running force to the bogie 10 is provided on the upstream side of the non-working path section 3B.
A speed reducer 30 acting on 14 to decelerate the carriage 10 is provided, and feeding devices 35 and 36 are provided slightly above the accelerator 20 and slightly below the speed reducer 30. Each device 2
The pairs 0, 30, 35, and 36 are symmetrically arranged on the left and right sides. Further, a stopper device 38 to which the carriage 10 can freely contact is provided at the lower feeding device 32.

Next, the details of the acceleration device 20 will be described with reference to FIGS.
A description will be given based on FIG. A vertical axis 23 is erected from the base frame 2 side via a mounting member 22. A support member 24 is attached to the vertical axis 23 via a bearing so as to be swingable about the vertical axis. A servo motor 25, which is an example of a rotary driving device, is provided on the support member 24. A feed roller 26 made of, for example, urethane is fixed to an output shaft taken out from the servo motor 25. The servo motor 25 applies a high-speed feed rotational force A to the feed roller 26. A support member 24 is provided between the support member 24 and the base frame 2.
Is provided with a cylinder device 27 for swinging the cylinder. Therefore, by operating the cylinder device 27, the support member 24 can be swung about the longitudinal axis, and the feed roller 26 can be moved into and out of contact with the pressure receiving portion 14.

3 to 5, the deceleration device 30 has the same structure as that of the acceleration device 20.
The difference is that an air motor 31 is used instead of the servo motor 25 of the acceleration device 20, and that a low-speed feed rotational force B can be applied to the deceleration roller 32. That is, as shown in FIG. 8, the air motor 31 is normally in a non-rotating state with the valve 33 being neutral,
The pressure receiving part 14 of the truck 10 that has moved at high speed is a deceleration roller.
By pressing against the 32, the air is discharged through the relief valve 34 while rotating the speed reduction roller 32, thereby absorbing the moving energy and decelerating the carriage 10. By switching the valve 33, the deceleration roller 32 is forcibly rotated to apply a low-speed rotation torque B. The two feeding devices 35 and 36 have the same structure as the acceleration device 20.

4 to 6, the stopper device 38 is used.
The bracket 39 has a pair of front and rear links 41 capable of standing upright and sideways on a bracket 39 via a horizontal shaft 40, and a stopper body 43 is connected via a horizontal pin 42 between the free ends of the links 41. Further, a cam roller 45 operable on a cam surface 44 formed on the lower surface of one link 41 is provided on the longitudinal moving body 46, and the longitudinal moving body 46 is moved back and forth by a common cylinder device 47.

In FIGS. 1 and 2, the work path 3A is provided with a feeder 50 for transmitting the running force to the carriage 10 on its upper side, and a braking device 51 on its lower side. Feeding devices 52 and 53 are provided on the upper hand and slightly below the braking device 51. Each device 50, 51,
The left and right pairs 52 and 53 are symmetrically arranged.

The feeding device 50 and the feeding devices 52 and 53 have basically the same structure as the feeding devices 35 and 36. Further, the braking device 51 has the same structure, but differs in that a reverse rotation torque D is applied to the braking roller 54 of the braking device 51 with respect to the rotation torque C of the feeding device 50, and vice versa. The feed torque D is smaller than the feed torque C.

A lift facility having an elevating body 4 is provided in each of the transfer path sections 3C and 3D, and a transfer rail 5 which can be connected to the rail 1 is laid on the upper surface of the elevating body 4. A carry-in device 6 for supplying a conveyed object onto the carriage 10 is disposed opposite the ascending limit position of the upper transfer side transfer path section 3D from outside, and the lower transfer side transfer path section 3C. An unloading device 7 for unloading an object to be conveyed from above the carriage 10 is disposed opposite the ascending limit position from the outside. A guide roller 55 facing the pressure receiving portion 14 is provided at a necessary portion on the side of the fixed path 3.

Next, the operation of the above embodiment will be described. An empty trolley 10 is located on the elevating body 4 that has reached the ascending limit position of the transfer path section 3D on the upper transport side. An object is supplied to the carriage 10 by the carry-in device 6. The cart 10 is pushed into the upper end of the work path 3A by the operation of a feeder device (not shown), and its front end is fed into the feeder.
Stop by entering 52. Next, in a state where the feeding device 50 is in the receiving state, the feeding device 52 is operated in the same manner as the feeding device 50 described later to convey the carriage 10. At this time, the front abutment surface 15 of the transported trolley 10 comes into contact with the rear abutment surface 15 of the rearmost trolley 10 of the group of trolleys 10 located in the form of a dense train on the work route section 3A. Then, the carriage 10 is conveyed by the feeding force of the feeding device 52.

The feeding by the feeding device 52 is stopped when the front end of the truck 10 enters the feeding device 50. At this time, the cylinder device 27 of the feed device 50 is extended, and the support member 24 is swung outward around the longitudinal axis, so that the feed roller 26 is separated from the pressure receiving portion 14. Therefore, the carriage 10 is carried in (traveled) without any trouble.

After the carry-in operation, the feed roller 26 is moved closer to the pressure receiving portion 14 by an action reverse to the above, and the feed roller 26 is rotated by the servo motor 25 at this time. Therefore, by bringing the feed roller 26, which is being forcibly rotated, into pressure contact with the pressure receiving portion 14, a running force is given to the bogie 10 by the feed rotational force C, so that the bogie 10 has a desired speed on the work path portion 3A. , And a group of carts 10 located in the form of a dense train in the work route section 3A is transported by pushing.

The feed amount of the carriage 10 by the feed device 50 is detected by an encoder or the like, and when a certain predetermined feed amount is detected, the feed roller 26 is separated and the transfer operation is stopped. The trolley 10, which has reached the lower side of the work path section 3A, is braked by the braking device 51. That is, when the transport operation of the carriage 10 by the feed device 50 is stopped, the cylinder device in the braking device 51 is contracted, and thus the braking rollers 54 are separated from each other. Then, in conjunction with the carry-in movement of the feeder 50, both braking rollers 54
Are moved closer to each other and pressed against the pressure receiving portion 14, and at this time, the braking roller 54 is rotationally driven to the side opposite to the feed roller 26.

That is, the two braking rollers 54 are forcibly rotated in opposite directions by driving the torque motor. Therefore, when the braking roller 54 that is being forcibly rotated is pressed against the pressure receiving portion 14, a propulsive force in the reverse transport direction F acts on the carriage 10 due to the reverse rotation torque D. Here, the feed rotation force C reverses. Since the rotation force is larger than the rotation force D, the braking roller 54 is rotated to the feed rotation side in accordance with the difference, and the load at that time is absorbed by the torque motor.

As a result, the bogie 10 corresponding to the inferior braking device 51 is conveyed while being subjected to a braking action. Therefore, between the feeding device 50 and the braking device 51, a plurality of bogies 10 They are aligned in a tightly pushed state without any gap between the front and rear ends. Such a braking action by the braking device 51 is stopped immediately before and after the transport by the feed device 50 is stopped. Thus, the work route section 3A
While the carriage 10 is intermittently conveyed and stopped, the worker on the work floor plate or the worker who has moved onto the main body 11 performs various operations on the transferred object.

By the above-mentioned back-up, the braking device 51
The cart 10 extruded from the receiving device 53 is received by the feeding device 53, and by the operation of the feeding device 53, is transferred on the transfer rail 5 of the lifting body 4 which is at the upper limit in the lower transfer path 3C. Here, the transported object on the carriage 10 is taken out by the unloading device 7, and the empty carriage 10 is thereby removed.
Is transported down the transfer path 3C by the lowering of the elevating body 4.

The carriage 10 on the elevating body 4 is pushed into the upper end of the non-working path section 3B by the operation of a feeder device (not shown), and is stopped when the front end enters the feeding device 35. Next, in a state where the accelerating device 20 is ready to receive, the feeding device 35 is operated in the same manner as the accelerating device 20 to convey the carriage 10 (described later).

At this time, in the non-work route section 3B, the bogie 10 is not present and is in an empty state.
Is in the stopper position. That is, the front and rear moving body 46 moves to the lower side by the operation of the cylinder device 47, and the cam roller 45
By acting on the cam surface 44, the link 41 is raised and rocked, and the stopper body 43 is raised as shown by the solid line in FIG.

The feeding by the feeding device 35 is stopped when the front end of the carriage 10 enters the acceleration device 20. At this time, the cylinder device 27 of the acceleration device 20 extends to swing the support member 24 outward around the longitudinal axis, so that the feed roller 26 is separated from the pressure receiving portion 14. Therefore, the carriage 10 is carried in (traveled) without any trouble.

After the carry-in, the feed roller 26 is moved closer to and pressed against the pressure receiving portion 14 by an action opposite to that described above. At this time, both feed rollers 26 are driven to rotate at high speed by the servo motor 25. Therefore, by causing the feed roller 26, which is being forcibly rotated, to press against the pressure receiving portion 14, a high-speed running force is given to the truck 10 by the high-speed feed rotational force G, so that the truck 10 moves on the non-work path portion 3B. Return at high speed (coasting) .

The carriage 10 which is returned H at a high speed in this manner gradually decreases in speed and enters the space between the reduction gears 27 at the lower part on the non-work path 3B. That is, the air motor 31
Is normally in a non-rotating state with the valve 33 in a neutral state, and the pressure receiving portion 14 of the carriage 10 that has moved at a high speed enters between the deceleration rollers 32 and comes into pressure contact therewith. Then, with the moving force of the carriage 10, the air is discharged through the relief valve 34 while rotating the speed reduction roller 32, whereby the movement energy is absorbed and the carriage 10 is rapidly decelerated. Thereafter, the carriage 10 is stopped with the front contact surface 15 received by the stopper body 43 of the stopper device 38.

The cylinder device of the stopper device 38
By operating the air motor 31 in a state where the link 41 is tilted sideways by operating the lever 47 in the opposite direction to the above and the stopper body 43 is lowered as shown by the phantom line in FIG. 6, the air motor 31 is driven and rotated by switching the valve 33. , A low-speed feed rotational force B is applied to the speed reduction roller 32. The cart 10 sent out by this is transferred to the transfer rail 5 of the elevating body 4 at the lower limit in the transfer path section 3D on the up-feeding side, and is sent upward by the lifting of the elevating body 4 to be moved upward to the work path section 3A. Is opposed to.

The acceleration device 20 and each of the feeding devices 35, 36,
In the 52, 53, the feed device 50, and the braking device 51, the corresponding servo motors 37 are electrically synchronized, and in the speed reducer 30, the corresponding air motors 31 are synchronized by air piping.

When the non-work path 3B is long, the carriage 10 sent out by the acceleration device 20 does not reach the speed reduction device 30. In such a case, for example, FIG.
As shown by the imaginary line in FIG. 2, a relay base in which the reduction gear 30, the accelerator 20, and the stopper device 38 are disposed at one or a plurality of intermediate portions of the non-work path 3B may be formed.

In the above embodiment, in the accelerator 20, the feeders 35, 36, 52, 53, the feeder 50, and the brake 51, all of the feed rollers 26 and the brake rollers 54 are forcibly driven. For example, the feed roller 26 and the brake roller 54 on one side are forcibly driven, and the feed roller on the other side is
26 and the braking roller 54 may be of idle rotation type.

[0035]

According to the present invention having the above-described structure, the vehicle can travel at high speed by operating the acceleration device on the pressure receiving portion in a state where the vehicle is positioned facing the acceleration device above the non-work path. Force can be applied, so that the bogie can coast at high speed on the non-work path. The truck can be decelerated by applying a speed reduction device to the pressure receiving portion of the truck traveling at high speed, so that the truck can decelerate and then stop by contacting the stopper device.

As described above, the bogie can efficiently return (run) at high speed in the non-working route portion, and the number of bogies between the acceleration device and the deceleration device in the non-working route portion
Can be reduced to only one, and the number of expensive trolleys can be reduced, resulting in lower equipment costs.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a transport equipment using a trolley, showing one embodiment of the present invention.

FIG. 2 is a schematic plan view of a transfer facility using the same vehicle body, wherein A indicates a work route portion, and B indicates a non-work route portion.

FIG. 3 is a side view of a reduction gear unit in the non-work path portion.

FIG. 4 is a plan view of a reduction gear unit in the non-working path unit.

FIG. 5 is a front view of a reduction gear unit in the non-work path section.

FIG. 6 is a side view of the stopper device.

FIG. 7 is a plan view of an acceleration device section in the non-work path section.

FIG. 8 is a piping system diagram of the air motor unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rail 3 Constant path 3A Work path part 3B Non-work path part 10 Bogie 11 Main body 14 Pressure receiving part 15 Contact surface 20 Accelerator 25 Servo motor 26 Feed roller 30 Reduction device 31 Air motor 32 Reduction roller 35 Feed device 36 Feed device 38 Stopper Device 43 Stopper body 50 Feeding device 51 Braking device 52 Feeding device 53 Feeding device 54 Braking roller

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Nobuhiro Hayashi 3-2-11 Moundoshima, Nishiyodogawa-ku, Osaka-shi, Osaka Inside Daifuku Co., Ltd. (72) Hiroshi Nakagawa 3-2-1 Migoshima, Nishiyodogawa-ku, Osaka-shi, Osaka No. Daifuku Co., Ltd. (56) References JP-A-4-272023 (JP, A)

Claims (1)

(57) [Claims] 1. A truck that is supported and guided by a rail and that can travel on a fixed route is provided, and a pressure receiving portion that faces outward is formed on the truck, and the fixed route is supported by the truck while running the truck. A work path section for performing work on the conveyed object, and a non-work path section for running a trolley emptied by taking out the conveyed article, a feeding device for imparting slow feeding force to the carriage acts on the pressure receiving portion, acts on the pressure receiving portion of the fed die wheel by the feeding device, an acceleration device for imparting high-speed running force to the carriage is provided, Poorly,
A deceleration device that acts on the pressure receiving portion to decelerate the bogie, and a feeding device that acts on the pressure receiving portion of the bogie being decelerated by the deceleration device and applies a low-speed feeding force to the bogie is provided. In the part of the lower feeding device, a stopper device with which the carriage can freely contact is provided,
In the non-working path section, the carriage using the carriage is characterized in that one carriage is coasted between the acceleration device and the deceleration device by the high-speed traveling force applied by the acceleration device. Facility.