JPH061419A - Movable body carrier device - Google Patents

Abstract

PURPOSE:To carry out manual work for an article to be carried at an optimum level by installing a lifting device which lifts a supporting device in a certain passage for a change in the level of the article to be carried to the upper surface of a movable body. CONSTITUTION:A feeder 11 which gives movement force to a movable body 1 is installed on the upper side of a certain passage 5, and a braking device 13 which gives braking force to the movable body 1 is installed on the lower side. Besides, a supporting device 20 for article to be carried is liftably-installed in the movable body 1 through a lifting element, and a locking device which can fix the lifting position of the supporting device 20 is installed in the movable body 1, and a lifting device 50 which works on the lifting element to lift the supporting device 20 is disposed in the certain passage 5. Therefore, when the movable body 1 reaches a prescribed position, the lifting device 50 is operated to lift the supporting device 20 and raise the level of an article 19 to be carried according to manual work, thus it is possible for a worker to carry out work easily and safely without his taking a difficult posture.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable body conveying device used to convey a non-driving carriage, which can travel freely on the floor, on a fixed path.

[0002]

2. Description of the Related Art Conventionally, as a structure for transporting a non-driving carriage on a fixed route, a structure disclosed in, for example, Japanese Patent Laid-Open No. 2-209309 has been provided.

In this conventional structure, the movable body conveying device is provided on the upper side of a fixed path on which the movable body can freely travel, the brake device is provided on the lower side, and the movable body conveying device to the next process is provided on the lower side of the brake device. ing. The movable body transporting device is composed of a pair of left and right feed rollers that can come into contact with the side surface of the movable body, and a rotation drive device that interlocks with these feed rollers. In addition, the brake device is composed of a pair of left and right brake rollers that can come into contact with the side surface of the movable body and a torque motor that applies a reverse feed rotational force to these brake rollers. It is set to large.

According to such a conventional structure, a large propulsive force is applied to the movable body by forcibly rotating both feed rollers, which are in contact with both side surfaces of the movable body, by the rotation drive device. The movable body can be conveyed on a fixed path.
At this time, the movable body pushes and conveys the movable body group which is preceding and stopped.

On the lower side of the fixed path, since the brake roller which is rotated in the reverse direction is in contact with both side surfaces of the movable body, a propulsive force in the reverse conveying direction is applied to the movable body, and the feed rotation is performed here. Since the force is larger than the reverse feed rotational force, the brake roller is rotated to the feed rotation side according to the difference. As a result, the lower movable body is conveyed while being subjected to the braking action, so that the movable body group is conveyed in a dense rearward pushing state without forming a gap between the front and rear ends. Then, the movable body pushed out from the brake device is carried out to the next step by the next movable body conveying device.

[0006]

According to the above-mentioned conventional structure, since the transported object supported by the movable body is always at a constant level on the movable body, the operator may have an unnatural posture depending on the work place. I have to work.

An object of the present invention is to form a movable train group in a dense train form without any gap between the movable bodies so that the movable body groups can be efficiently and efficiently transported, and An object of the present invention is to provide a movable body transporting device that can perform work on a transported object safely in a comfortable posture.

[0008]

In order to achieve the above object, a movable body conveying apparatus of the first aspect of the present invention is a feeding device for imparting a moving force to a movable body on the upper side of a fixed path in which the movable body is movable. And a braking device for applying a braking force to the movable body on the lower side, and a supporting device for the conveyed object is provided on the movable body so as to be vertically movable via an elevating body, and the movable body is provided with: A lock device is provided that can fix the lifting position of the support device, and a lift device that acts on the lifting body to raise the support device is provided in the fixed path.

In the movable body transporting apparatus of the second aspect of the present invention, the lock device is provided with engaged recesses formed in a plurality of vertical positions on the side surface of the lifting body, and the movable body is provided on the movable body side so as to engage with and disengage from the engaged recesses. An engaging body provided swingably, a cam roller provided on the engaging body, and a cam roller provided to be movable up and down on the movable body side to act on the cam roller to engage and disengage the engaging body and maintain an engaged and disengaged posture. A cam body is provided, and a lifting device for the cam body is provided.

[0010]

According to the structure of the first aspect of the present invention, the movable body is positioned in opposition to the feeding device by the hand of a fixed path. Then, by causing the feeding device to act on the movable body side, a large propulsive force is applied to the movable body, and thus the movable body is conveyed on a fixed path. At this time, the movable body pushes and conveys the movable body group which is preceding and stopped. On the lower side of the fixed route, the braking device acts on the movable body, so the movable body on the lower side is conveyed while being subjected to the braking action. It is conveyed in a dense back-pushed state without creating a gap therebetween. In this way, since the movable body group is densely arranged in series between the feeding device and the braking device, the worker on the movable body can perform manual work or walk without falling.

When the movable body reaches a predetermined position on a certain path, the lift device can be operated to raise the supporting device via the elevating body, whereby the level of the object to be conveyed with respect to the upper surface of the movable body can be manually changed. Can be raised according to. The locking device can then be activated to maintain that level. By releasing the locking device at a predetermined position, the supporting device, that is, the level of the transported object can be returned to the lowered original position. Further, by changing the level amount due to the increase at a plurality of points, various levels can be set in a fixed route.

According to the structure of the second aspect of the present invention, the operation of the lock device is performed as follows. That is, by raising the cam body by the raising device, the engagement body can be disengaged and swung through the cam roller, and the disengagement posture can be maintained. With the lock for the lifting body released by the disengagement of the engaging body, the support device is lifted through the lifting body by the operation of the lift device as described above. Next, by lowering the cam body by applying its own weight or a downward force, the engaging body is engaged and oscillated via the cam roller to engage with the opposed recessed portion, and the disengagement posture can be maintained. It can be locked.

[0013]

An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 to 3, reference numeral 1 denotes a truck (an example of a movable body) that can travel on the floor side, and has a plurality of wheels 3 at a lower portion of a main body 2 in a freely rotatable manner. This dolly 1 includes a pair of left and right rails 4
It is placed on the upper side of the vehicle via the wheels 3 so that it can travel freely on the fixed path 5. Here, the fixed path 5 is a transfer path 5A that is linear on the upper floor, a non-work path portion 5B that is linear on the lower floor, and a vertical transfer that connects the start and end points of both path portions 5A and 5B. The path portions 5C and 5D form a loop.

Lifting equipment having an elevating body 6 is provided on both the transfer path portions 5C and 5D, and a transfer rail 7 that is connectable to the rail 4 is laid on the upper surface of the elevating body 6. Then, a supply device 8 for supplying the transported object is disposed on the carriage 1 so as to face the rising limit position of the upper transfer side transfer path portion 5D from the outside, and the lower transfer side transfer path portion 5C. An unloading device 9 for unloading the transported object from the trolley 1 is provided so as to face the rising limit position from the outside.

The work path portion 5A and the non-work path portion 5B have opposite conveying directions, and a carry-in device 10 and a feeding device 11 are arranged on the respective sides of the work path part 5A at appropriate intervals in the path direction. Further, the carry-out device 12 is arranged on the lower side, and the braking device 13 is arranged slightly higher than this.

The carrying-in device 10, the feeding device 11 and the carrying-out device 12 have the same structure, and the feeding roller 15 interlocked with a pair of left and right servomotors 14 which are electrically synchronized is provided with a feeding roller 15 of the main body 2. The side surfaces 2a are configured to come into contact with and separate from each other.
Then, the servo motor 14 applies the feed rotational force A to the feed roller 15. Further, the braking device 13 includes a braking roller 17 that is interlocked with a pair of left and right torque motors 16 that are electrically synchronized,
The both side surfaces 2a are configured so as to come into contact with and separate from each other. The torque motor 16 applies a reverse feed rotational force B to the braking roller 17, and the reverse feed rotational force B is set to be smaller than the feed rotational force A generated by the servo motor 14.

As shown in FIGS. 3 to 7, the carriage 1 includes:
A support device (20) for supporting an object (car body, etc.) (19) is provided so as to be able to move up and down via an elevating body. That is, the supporting device 20 is composed of a front supporting member and a rear supporting member, each of which is composed of a frame 21 in the left-right direction and a receiving member 22 provided on the frame 21. A pair of left and right lifting rods 23, which is an example of a lifting body, are vertically provided from each frame 21. The main body 2 is provided with a tubular body 24 for guiding the elevating rod 23, and a roller 25 is rotatably provided at the lower end of the elevating rod 23. A vertical slit 26 is formed in a portion of the cylindrical body 24 facing the main body 2. A fall prevention roller 27 is attached to the lower surface side of the main body 2.

The support device 20 is attached to the main body 2 of the carriage 1.
A lock device 30 is provided which can fix the vertical position of the. That is, engaged recesses 32 each having a horizontal and downward engaged surface 31 are formed at a plurality of vertical positions on the side surface of the elevating rod 23 facing the slit 26. Then, in order to engage and disengage the engaged recessed portion 32, the engaging body 33 is attached to the main body 2 side.
Is swingably provided. The engaging body 33 is swingable in the left-right direction with an intermediate portion supported by a pin 34 in the front-rear direction attached to the main body 2 side, and the upward engaging portion 35 formed in the upper portion has the slit 26. Through the engaged recess 32
You can freely engage and disengage. And, on the upper and lower ends of the engaging body 33,
Cam rollers 36 and 37 are provided so as to freely rotate around the longitudinal axis.

A cam that acts on the cam rollers 36 and 37 to engage and disengage the engaging body 33 and maintain the engaging and disengaging posture at a position facing the engaging body 33 from the side opposite to the cylindrical body 24. A body 38 is provided so that it can be raised and lowered. That is, the main body 2 is provided with a vertical guide tube 39, and a guide rod 40 that is guided by the guide tube 39 and is movable up and down. The C-shaped cam body extends between the upper and lower ends of the guide rod 40.
38 is attached. The engagement body 33 of the cam body 38
Is a cam surface 41, an upper vertical surface 41a, an upper inclined surface 41b inclined downward and inward from the lower end of the upper vertical surface 41a, and an intermediate vertical extending downward from the lower end of the upper inclined surface 41b. The surface 41c, a lower inclined surface 41d inclined downward and outward from the lower end of the intermediate vertical surface 41c, and a lower vertical surface 41e extending downward from the lower end of the lower inclined surface 41d. The surfaces 41a to 41a are arranged so that the cam rollers 36 and 37 do not face the inclined surfaces 41b and 41d at the same time.
e are arranged vertically.

A roller 43 is provided at the lower end of the cam body 38 so as to be freely rotatable via a horizontal shaft 42, and a floating prevention member 44 is provided on the inner protruding portion of the horizontal shaft 42. Further, a spring 45 for urging the guide rod 40 downward is provided between the guide cylinder 39 and the guide rod 40. The lock device 30 is configured by the above 31 to 45.

Lifting devices 50 that act on the elevating rods 23 to lift the supporting device 20 are operably arranged at a plurality of positions in the work path portion 5A. The lift device 50 has a pair of left and right guide rails 51 on the side of the machine frame 49 that supports the rails 4.
It has a base body 53 which is supported and guided via 52. Here, the base body 53 is movable in the direction along the work path portion 5A, and the movement position of the lift device 50 can be changed and the changed position can be fixed by an appropriate means.

On the base body 53, the work path portion 5
A plurality of support rails 54 are laid along A, and a pair of front and rear cam bases 56 supported and guided by the slide bodies 55 are provided on the support rails 54.
A cylinder device 57 that moves integrally along A is provided between the base device 53 and the cylinder device 57. The upper surface of the cam base 56 is formed as a cam surface 58 that is vertically inclined in the direction of the work path portion 5A.

Brackets 59 are provided upright from the base body 53 outside the ends of the support rails 54, and vertical guide bodies 60 are attached to the inner surfaces of the brackets 59 facing each other. An elevating frame 63 is continuously provided between the surfaces of the elevating member 62, which are guided by the guide body 60 via rollers 61, facing each other, and a bracket 64 is continuously provided downward from the elevating frame 63.
Further, a roller 65 that is capable of contacting the cam surface 58 is provided.
Further, on the upper surface of the elevating frame 63, a lifting rail 66 is provided along the working path portion 5A so as to be capable of contacting the roller 25 from below. The lift device 50 is configured by the above 51 to 66.

The lift device 50 is provided with a device 70 for raising the cam body 38 of the lock device 30. That is, an elevating body 71 guided by a guide mechanism (not shown) is provided above the elevating frame 63, and elevating the elevating body 71 is performed by a cylinder device 72 provided between the elevating frame 63 and the elevating frame 63. . A push-up rail 73 is laid on the elevating body 71 so as to be capable of contacting the roller 43 from below. The lifting imparting device 70 is configured by the above 71 to 73. An engaging rail 74 is laid on the lifting body 71 so as to be opposed to the floating prevention body 44 from above. Further, a fall prevention rail 75 is provided on which the fall prevention roller 27 can be fitted.

Next, the operation of the above embodiment will be described. In the transfer path portion 5D on the upper feeding side, the empty carriage 1 is located on the elevator 6 that has reached the ascending limit position. With respect to the supporting device 20 of this dolly 1, the object to be conveyed 19 is supplied by the supplying device 8.
Is supplied. Then, the carriage 1 is pushed into the upper end of the work path portion 5A by the operation of the feeder device (not shown), and its front end is stopped by entering the carry-in device 10. Next, with the side of the feeding device 11 ready for receiving, the loading device 10 is operated in the same manner as the feeding device 11 described later to move the carriage 1
To transport. At that time, the front end face of the fed trolley 1 comes into contact with the rear end face of the rearmost trolley 1 of the trolleys 1 group located in the work route portion 5A in a dense train form, whereby the loading device 10 The trolley 1 group is conveyed by the feeding force.

Carry-in (feed-in) by the carry-in device 10
Is stopped when the front part of the truck 1 enters the feeder 11. At this time, the feed roller 15 in the feeding device 11 is separated from the side surface 2a. Therefore, the carriage 1 can be carried in without any trouble. After carrying in, the feed rollers 15 are moved closer to each other and brought into pressure contact with the side surface 2a by the action opposite to that described above. At this time, both feed rollers 15 are rotationally driven by the servomotor 14. Therefore, by forcing the feed roller 15 which is forcibly rotated into contact with the side surface 2a, a traveling force is given to the trolley 1 by the feed rotational force A, so that the trolley 1 moves at a desired speed on the work path portion 5A. The carriage 1 is conveyed C, and the carriage 1 group positioned in the work path portion 5A in a dense train is pushed and conveyed. The feed amount of the carriage 1 by the feed device 11 is detected by an encoder or the like, and when a predetermined feed amount is detected, the feed roller 15 is separated and the carrying operation is stopped.

The trolley 1 which has reached the lower side of the work path portion 5A is braked by the braking device 13. That is, when the feeding operation of the carriage 1 by the feeding device 11 is stopped, the braking rollers 17 in the braking device 13 are separated from each other. Then, the two braking rollers 17 are moved closer to each other and brought into pressure contact with the side surface 2a in association with the carry-in movement of the feeding device 11. At this time, the braking roller 17 is rotationally driven on the side opposite to the feeding roller 15. . That is, by driving the torque motor 16, both braking rollers 17 are forcibly rotated in opposite directions. Therefore, when the braking roller 17, which is forcibly rotated, is brought into pressure contact with the side surface 2a, the reverse feed rotational force B acts on the trolley 1 in the reverse transport direction D. Here, the feed rotational force A is reversed. Because it is greater than force B,
The braking roller 17 is rotated toward the feed rotation side in accordance with the difference, and the load at that time is absorbed by the torque motor 16.

As a result, the carriage 1 corresponding to the lower braking device 13 is conveyed while being subjected to the braking action, so that between the feeding device 11 and the braking device 13, a plurality of carriages 1 are They are densely aligned in the rearward pushing state without forming a gap between the front and rear ends thereof. The braking action of the braking device 13 is stopped before or after the conveyance of the feeding device 11 is stopped. As described above, while the carriage 1 is intermittently conveyed in the work path portion 5A and while the carriage 1 is stopped, the worker on the work floor board or the worker who has transferred to the main body 2 is Various manual work can be performed. At that time, even if the trolley 1 group is being transported, the worker can perform manual work or walking without falling forward and backward because the trolley 1 group is dense and straight.

The braking device 13 is operated by the rearward pushing as described above.
The trolley 1 pushed out from is received by the unloading device 12,
Then, by the operation of the carry-out device 12, the transfer path portion 5 on the lower transfer side
At C, it is passed on the transfer rail 7 of the lifting body 6 which is in the ascending limit. Here, the transported object 19 on the supporting device 20 of the trolley 1
The trolley 1 taken out by the unloading device 9 and emptied by the unloading device 9 is sent down the transfer path portion 5C by the lowering of the elevating body 6. Then, the carriage 1 on the lifting body 6 is pushed into the upper end of the non-work path portion 5B by the operation of the feeder device (not shown). In the non-working route portion 5B, the trolley 1 is transported in the same manner as the above-described working route portion 5A, and then is transferred onto the transfer rail 7 of the lifting body 6 which is at the lower limit of the transfer route portion 5D on the upper feeding side. Then, the lifting / lowering body 6 is lifted to feed it and face the work path portion 5A.

When the trolley 1 being transported on the work path 5A reaches a specific position, the support device 20 is lifted by the operation of the lift device 50 as required, but the lock device 30 precedes this. Acted like. That is, as shown by the solid line in FIG. 6, the lock device 30 engages the engaging portion 35 of the engaging body 33 with the uppermost engaged recess 32, and the upper cam roller 36 is attached to the upper vertical surface 41a. By abutting, the engagement posture is maintained.

In this state, first, the cylinder device 72 of the raising device 70 is extended, and the push-up rail 73 is raised via the elevating body 71. As a result, the push-up rail 73 comes into contact with the roller 43, the guide rod 40 rises against the spring 45, and the cam body 38 integral with this is raised. Then, the upper cam roller 36 contacting the upper vertical surface 41a is guided from the upper inclined surface 41a to the intermediate vertical surface 41c, and the lower cam roller 37 facing the intermediate vertical surface 41c.
Is guided from the lower inclined surface 41d to the lower vertical surface 41e, and as shown by the phantom line in FIG.
Can be disengaged and swung so as to be disengaged from the uppermost engaged recess 32, and the lock can be released. At the same time, the lower cam roller 37
Is in contact with the lower vertical surface 41e, so that the detached posture is maintained.

In this way, with the lock of the lifting rod 23 released by the disengagement of the engaging body 33, the lifting device 50 operates to raise the support device 20 via the lifting rod 23. That is, the cylinder device 57 in the extended state is contracted, and thereby both cam bases 56 are moved to the downstream side from the virtual line in FIG. 3 to the solid line. Then, the inclined cam surface 58 moves to raise the elevating frame 63 via the roller 65,
This rise is guided by the guide body 60 and is performed right above, and at the same time, the lifting rail 66 rises. This lifting rail 66
As a result, the lifting rod 23 is pushed up via the roller 25, so that the transported object 19 supported between the receiving members 22 can be raised. As a result, the level of the transferred object 19 can be raised to the optimum position for the manual operation with respect to the upper surface of the main body 2.

Then, the lock device 30 can be locked to maintain its level. That is, the cylinder device 72 of the raising device 70 is contracted, and the lifting rail 73 is lowered via the lifting body 71. As a result, the elastic force of the spring 45 lowers the guide rod 40, and the cam body 38 integrated with the guide rod 40 is lowered. Then, the cam surface 41 acts on both cam rollers 36, 37 in the opposite manner to the above-described releasing action to engage and swing the engaging body 33, and the engaging portion 35 faces the engaged recessed portion. By engaging the upper cam roller 36 with the upper vertical surface 41a while engaging with 32, the engagement posture can be maintained and thus locked.

By the above, the supporting device 20 can be raised to an arbitrary level and the raised position can be locked.
As a result, the worker on the main body 2 can perform desired manual work on the predetermined position of the transferred object 19 raised during the transportation of the carriage 1 without forcibly taking a posture. At another location, the support device is released by releasing the lock device 30 by the action opposite to the above.
20, that is, the level of the transported object 19 can be returned to the original position. Further, by changing the level amount due to the increase at a plurality of points, various levels can be set in a fixed route.

The working portion of the lifting device 50 is shown in FIG.
As shown in, the fall prevention rail 75 and the fall prevention roller 27
Are fitted together, thereby preventing the cart 1 from overturning due to a rise in the center of gravity.

The above-described operation is performed at all of a plurality of places where the lift device 50 is provided, or at a part of the required places. The amount of lift can be adjusted by changing the amount of expansion and contraction of the cylinder device 57, and the amount of lift at multiple locations can be made different, so that a suitable amount of lift can be expected depending on the work content and vehicle type. obtain.

In the above embodiment, both side surfaces 2a of the main body 2 are shown as the portions on which the feeding device 11 and the like act, but this is, for example, a pressure receiving body is hung from the center of the lower surface of the main body 2 and both side surfaces of this pressure receiving body are provided. May be used. Further, as the feeding device 11, the type in which the feeding rollers 15 are pressed against each other from the left and right is shown, but this allows the feeding rollers 15 to freely approach and separate only from one side, and the idler roller group is arranged in a stationary manner on the other side for backup. The format may be Further, as the feeding device 11, a type in which a conveyor belt is pressed in place of the feeding roller 15 and a type in which a drive pinion is meshed with a rack on the side of the carriage 1 can be considered. Such a modified structure of the feeding device 11 can also be adopted in the carry-in device 10, the carry-out device 12, the braking device 13, and the like.

In the above embodiment, the braking device 13 is the braking roller 17 with respect to the rotation of the feeding roller 15 in the feeding device 11.
However, this may be a type of forcibly rotating in the same direction at a low speed, a type of free rotation in a state where friction occurs in the rotating portion, or the like.

[0039]

According to the first aspect of the present invention having the above-mentioned structure, a large propulsive force is applied to the movable body by the feeding device provided on the upper side of the fixed path, and a braking force is applied to the movable body by the braking device provided on the lower side of the fixed path. By providing the movable body group, it is possible to efficiently convey the movable body group in a dense rearward pushing state without forming a gap between the front and rear ends. As described above, since the movable body group can be densely arranged in series between the feeding device and the braking device, the worker on the movable body can always perform manual work or walking safely without falling.

Further, by operating the lift device to raise the supporting device through the lifting body, the level of the transported object with respect to the upper surface of the movable body can be changed corresponding to the manual work, and then the lock device is operated. That level can be maintained. Therefore, the worker on the movable body can easily and safely perform the manual work on the transported object at an optimum level without taking an unreasonable posture. And by adjusting the amount of lifting and using different places,
It is possible to change the level of the transported object by sufficiently dealing with the type of the transported object.

According to the structure of the second aspect of the present invention, the lock device can be easily locked and unlocked, and the locked posture can be reliably maintained, so that the locked posture is always safe. Become.

[Brief description of drawings]

FIG. 1 is a schematic side view of a movable body transport device according to an embodiment of the present invention.

FIG. 2 is a schematic plan view of the movable body transport device, where X indicates a work route portion and Y indicates a non-work route portion.

FIG. 3 is a side view of the lift device section.

FIG. 4 is a front view of the lift device section.

FIG. 5 is a front view of a main part of the lift device section.

FIG. 6 is a vertical sectional front view of the lock device section.

FIG. 7 is a plan view of the lock device section.

[Explanation of symbols]

 1 dolly (movable body) 2 main body 2a side surface 5 constant path 5A working path section 5B non-working path section 11 feeding device 13 braking device 15 feeding roller 17 braking roller 19 transported object 20 support device 23 lifting rod (elevating body) 30 lock Device 31 Engagement surface 32 Engagement recess 33 Engagement body 35 Engagement portion 36,37 Cam roller 38 Cam body 40 Guide rod 41 Cam surface 50 Lifting device 56 Cam base 66 Lifting rail 70 Lifting device 73 Pushing up rail

Claims (2)

[Claims] 1. A feed device for applying a moving force to a movable body is provided on the upper side of a fixed path where the movable body is movable, and a braking device for applying a braking force to the movable body is provided on the lower side. Provided on the movable body, a support device for the transported object is provided to be movable up and down via an elevating body, the movable body is provided with a lock device capable of fixing the elevating position of the support device, and in the fixed path, A movable body transport apparatus comprising a lift device that acts on the lifting body to raise a support device. 2. An engaging recess formed at a plurality of vertical positions on a side surface of an elevating body, and an engaging body swingably provided on a movable body side so as to engage with and disengage from the engaging recess. The cam body is composed of a cam roller provided on the engagement body, and a cam body provided on the movable body side so as to be able to move up and down to act on the cam roller to engage and disengage the engagement body and maintain the engagement and disengagement posture. The movable body transport apparatus according to claim 1, further comprising: