JPH08133462A - Carrying equipment using truck - Google Patents

Abstract

PURPOSE: To simplify the peripheral system by providing an elevatable pallet receiving table on a truck side and elevating equipment to dispense with a lifting rail at the prescribed part for various works. CONSTITUTION: A pallet 48 supporting a work 49, etc., is loaded on an elevated pallet receiving table 20 relative to a body of a truck 10 by operating elevating equipment 26 when the truck 10 travels on a constant passage, and the loaded position is maintained without positional deviation by fitting a fitting part 50. The truck 10 enters the prescribed part, and stops at the prescribed part. When the pallet receiving table is lowered by the reverse action of the elevating equipment 26, the pallet receiving table 20 is supported on the floor side during the lowering through vertical clearance keeping members 55. The lowering pallet receiving table 20 can be separated from a pallet 48 by releasing the fitting of the fitting part 50. The separated pallet 48 can be stably supported on the floor side through the vertical clearance keeping members 55 which are sorted in the right and left.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transportation facility using a carriage that is supported and guided by rails and can travel on a fixed route.

[0002]

2. Description of the Related Art Heretofore, as a facility of this type, a structure shown in, for example, Japanese Patent Laid-Open No. 62-65822 has been provided. In this conventional type, a pair of left and right guide rails support a self-propelled carrier via wheels, and a loading platform is provided above the self-propelled carrier. The load carrier is capable of mounting a load supporting base, and in order to prevent displacement when mounting the load supporting base, an elevating guide pin is erected from the load supporting base and an elevating guide hole is formed in the load supporting base.

The load supporting base has rollers on both sides, and an elevating rail portion for supporting and guiding the rollers is provided via an elevating means. In addition, a fixed cradle that can support the load supporting base from below is arranged at the position where the lifting rail portion is arranged, and a positioning pin is erected from the fixed cradle to prevent displacement when supporting the load supporting base. At the same time, a positioning pin hole is formed on the load support base.

According to the above-mentioned conventional type, the self-propelled carriage is capable of traveling by placing the load support table on the load table, and at that time, the lift guide pins are fitted in the lift guide holes to load the load support table. Is prevented from being displaced. Then, when the self-propelled transport carriage enters the specific route portion, the rollers are mounted on the load support platform lifting rails and the load support platform is levitated by a certain height, and in this state, the load support platform travels from the self-propelled transport carrier. It receives force and is supported and guided by a lifting rail to move.

At this time, the elevating rail portion is elevated by the elevating means, allowing the load supporting base to move and pass. Then, the self-propelled carriage is stopped at a predetermined location, and the load supporting table can be placed on the fixed receiving table by lowering the elevating rail part by the elevating means while being positioned by the vehicle positioning means. At this time, the positioning pin fits into the positioning pin hole, and the load support table can be placed at an accurate position.

[0006]

However, according to the above-mentioned conventional method, the load supporting platform lifting rails must be arranged in a pair on the left and right over the entire length on a specific path portion for performing various operations. This specific route part becomes complicated and the desired work cannot be performed smoothly. When the control is roughly viewed, there are two systems, that is, the control on the side of the self-propelled carriage and the control on the side of the elevating means, so that the comprehensive control becomes complicated.

Therefore, an object of the present invention of claim 1 is to provide a carrier-equipped transfer facility which can simplify the surroundings by eliminating the need for a lifting rail and simplifying the control.

[0008]

In order to achieve the above-mentioned object, in the present invention, the transportation equipment using a trolley according to claim 1 is provided with a trolley which can travel on a fixed route, A pallet cradle for placing pallets is provided so as to be able to move up and down, and a lifting device is provided, and a vertical direction that is fitted between the pallet cradle and the pallet when the pallet is lifted by the raised pallet cradle. The vertical spacing holding member that separates the pallet from the pallet cradle and supports it on the floor side when the pallet cradle is lowered is provided by dividing the pallet cradle into the left and right with a fixed path direction as the front and rear. It is a feature.

Therefore, according to the first aspect of the invention, the pallet supporting the workpiece or the like is lifted with respect to the main body of the trolley by the operation of the lifting / lowering device when the trolley is traveling on a fixed route. While being placed on the cradle, the placement posture is maintained without displacement due to the fitting of the fitting portion. Then, the trolley enters a predetermined position and is stopped at the target position. Next, when the pallet pedestal is lowered by the reverse operation of the lifting / lowering device, the pallet pedestal is supported on the floor side via the left and right vertical gap holding members during the lowering. The pallet cradle that further descends can be separated from the pallet when the fitting portion is disengaged.

Various operations are performed on the work piece supported on the floor side through the vertical spacing member and the pallet. The work that has completed the desired work is received by the trolley together with the pallet by the action opposite to the one described above, and is forwarded to the next place or is conveyed to the wholesale place and taken out of the fixed route.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a pair of left and right traveling rails, which are fixed on a base frame 4 from a floor 3 via holding members 2 and the like. A cover 5 having a gate-shaped cross section is provided above the both traveling rails 1 from both sides to the base frame 4 side via a support bracket 6 located between the two traveling rails 1. It is fixed. A power supply device 7 is laterally arranged on the side surface of the support bracket 6.

Reference numeral 10 is a self-propelled vehicle which is an example of a trolley, and its main body
L-shaped leg members 12 vertically extend from four lower portions of 11 and wheels 13 attached to the leg members 12 are supported on the upper surface of the traveling rail 1. Further, a plurality of floating prevention rollers 14 facing the lower surface of the traveling rail 1 are attached to the leg member 12, and at least one of the leg members 12 is provided with a plurality of abuttable side surfaces of the traveling rail 1. A guide roller 15 is attached.

A traveling drive unit 16 is provided on one leg member 12.
Is provided, and the drive wheel 18 is attached to the output shaft 17 facing downward. The drive wheel 18 is configured by a roller type that abuts on the inner surface of the traveling rail 1 or a pinion type that meshes with a rack provided on the inner surface of the traveling rail 1.
Further, a current collector 19 slidably in contact with the power supply device 7 is provided on the traveling drive device 16 side, whereby the self-propelled vehicle 10 is supported and guided by the traveling rail 1 and can travel on the fixed route 9. .

On the main body 11 of the self-propelled vehicle 10, there is provided a pallet receiving table 20 for placing a pallet so that it can be moved in the traveling direction A and the lateral direction B and can be raised and lowered. That is, the pallet cradle 20 is in the shape of a rectangular plate, and the bottom surface of the four corners has slide parts such as slide bearings and LM guides.
A slide plate 22 is provided via 21 so as to be relatively movable in a traveling direction A and a lateral direction B. A rod 23 is vertically installed from each slide plate 22.
Cylindrical bodies 24 in which 23 are fitted so as to be able to move up and down are erected from the four corners on the main body 11, respectively, and springs 25 for urging the slide plate 22 upward are provided with these slide plates 22 and the main body 11.
It is provided between and.

An elevating device 26 for elevating and lowering the pallet pedestal 20 includes a speed reducer 28 arranged in the central portion of the upper surface of the main body 11 and linked to an elevating motor 27, and right and left parts projecting laterally from the speed reducer 28. Pinion 30 fixed to a pair of output shafts 29
A pair of left and right rod bodies 33 supported by a supporting member 31 from the main body 11 so as to be movable back and forth and having a rack portion 32 with which the pinion 30 meshes, and cam bodies 34 fixed to both ends of these rod bodies 33. , The slide plate to come into contact with the cam surface (slope) formed on the upper surface of the cam body 34 from above.
22 and a cam roller 36 attached to a bracket 35.

Between the pallet pedestal 20 and the main body 11, a front / rear positioning device 40 for preventing movement of the raised pallet pedestal 20 in the traveling direction A, and a left / right positioning device 41 for preventing movement in the lateral direction B. And are provided. These positioning devices 40 and 41 have the same configuration, and are arranged so that they are respectively placed on the left and right so as to be diagonal positions, and their directionality is displaced by 90 degrees.

That is, each of the positioning devices 40 and 41 includes a main body 11
Has a guide body 42 erected from above, and this guide body 42 has a narrow straight guide portion 43 formed in the up and down direction by a pair of members, and from the middle portion to the lower portion, A wide inclined guide portion 44 is formed. Then, the positioning roller 45 which is closely fitted to the straight guide portion 43.
Is the roller support 46 that is hung from the pallet receiving base 20.
It is supported so that it can rotate freely.

Between the pallet receiving base 20 and a pallet 48 which can be placed on the pallet receiving base 20, a pallet 48 in the vertical direction is fitted when the pallet 48 is lifted by the raised pallet receiving base 20. One fitting part 50 is provided. The first fitting portion 50 includes a first pin 51 standing upright from two lateral positions in the front and rear of the pallet receiving base 20 and a top and bottom formed on the pallet 48 so that these first pins 51 can fit. First in direction
And a hole 52. The pin and the hole may be reversed, or the taper fitting may be performed. 49 indicates a work piece.

The fixed path 9 is formed in the shape of an oval loop, and for example, one straight line portion (predetermined portion) is formed on the work path portion 9.
It is formed in a. Then, when the pallet cradle 20 is lowered in the work path portion 9a, the vertical interval holding members for separating the pallet 48 from the pallet cradle 20 and supporting it on the floor 3 side are provided in the left and right directions with the direction of the fixed path 9 as the front and rear. It is provided separately.

That is, the pallet is attached to the work path portion 9a.
Ground-side fixed bases (an example of vertical spacing members) 55 that can support 48 are provided at a plurality of positions at predetermined pitches. These ground-side fixed bases 55 are arranged separately on both sides of the work path portion 9a, and a receiving member 57 having an upper surface as a mounting surface 56 is provided on the upper portion thereof. Here, the mounting surface 56 is the first of the descending limit.
It is set to be higher than pin 51.

A vertical second fitting portion 60 is provided between the ground-side fixed base 55 and the pallet 48. This second fitting part
The reference numeral 60 designates second pins 61 which are respectively erected from the left and right ground-side fixed bases 55 at the front and rear, and second vertical holes 62 which are formed at the four corners of the pallet 48 so that the second pins 61 can be fitted. Composed of and. The pin and the hole may be reversed, or the taper fitting may be performed.

In the following, conveyance and processing work in the above embodiment will be described. The self-propelled vehicle 10 placed on the traveling rail 1 via each wheel 13 operates the traveling drive device 16 according to a traveling instruction and forcibly rotates the driving wheel body 18 to move on the fixed route 9 at a predetermined speed. Be driven. At this time, the self-propelled vehicle 10 is prevented from being lifted by the lifting prevention roller 14 being guided to the traveling rail 1, and is prevented from being laterally displaced by being guided by the guide roller 15.

In such a running state, the work piece 49
The pallet 48 supporting the pallet is placed on the pallet receiving base 20, and the first fitting portion including the first pin 51 and the first hole 52.
Since 50 is in the fitted state, its mounting posture is maintained without displacement. Then, the elevating device 26 is operated, and the rotation of the pinion 30 moves the rod body 33 to one side via the rack portion 32, thereby pushing up the slide plate 22 via the cam body 34 and the cam roller 36,
Thus, the pallet pedestal 20 can be raised with respect to the main body 11 as shown by the phantom line B in FIG.

Further, the positioning rollers 45 of both positioning devices 40 and 41 ascend together with the pallet receiving base 20 via the roller support 46, and these positioning rollers 45 are inclined guide portions.
The linear guide portion 43 is entered from 44, and as shown by the phantom line B in FIG. 2, the linear guide portion 43 is closely fitted.
Therefore, the self-propelled vehicle 10 can travel without the pallet cradle 20 being displaced relative to the main body 11 in the traveling direction A and the lateral direction B.

Then, the self-propelled vehicle 10 enters the work route portion 9a,
It is stopped facing the intended ground-side fixed base 55. Next, the lifting / lowering device 26 is reversely operated to lower the pallet pedestal 20 with respect to the main body 11. Then, as it descends, the positioning rollers 45 of both the positioning devices 40 and 41 enter from the straight guide portion 43 to the inclined guide portion 44 as shown in FIG. The restraint of the main body 11 in the traveling direction A and the lateral direction B is released, and the main body 11 can move in both directions A and B.

Therefore, the fitting of the second fitting portion 60, that is, the fitting of the second pin 61 and the second hole 62, allows the pallet holder 20 to be moved in both directions A relative to the pallet 48 by allowing the slide portion 21 to slide. Smoothly and smoothly while moving to B. While performing such fitting, the pallet 48 is shown in FIG.
As shown in FIG. 2, it is placed on the placing surface 56 of the receiving member 57 and supported on the floor 3 side, and the impact generated during the placing can be buffered by the spring 25. Then, in the first fitting portion 50, the first hole 52
With the first pin 51 pulled out from the self-propelled vehicle 10,
The pallet 48 and the like are left, and the vehicle travels on a fixed route 9.

Various works such as welding are performed on the workpiece 49 supported on the ground-side fixed base 55 via the pallet 48. The workpiece 49 that has completed the desired work in this way is forwarded by the self-propelled vehicle 10 together with the pallet 48 to the next fixed base 55 on the ground side, or transported to the wholesale place and taken out of the fixed route 9. Be done. At that time, the pallet 48 of the ground-side fixed base 55 is moved by the opposite action to the above-described action by the self-propelled vehicle 10.
Received by.

In the above-described embodiment, the loop-shaped one-way route is shown as the constant route 9, but the constant route 9 may be a linear reciprocating route. In the above-described embodiment, the front-rear positioning device 40 that restrains the traveling direction A and the left-right positioning device 41 that restrains the lateral direction B are provided.
41 may be omitted, or both positioning devices 40, 41 may be omitted.

[0029]

According to claim 1 of the present invention described above, since the pallet pedestal which can be raised and lowered and the raising and lowering device are provided on the trolley side, a lifting rail or the like is provided at a predetermined place where various works are performed. It is not necessary to simplify the surroundings, and traveling control and lifting control can be performed by one system for the trolley side, and overall control can be simplified. Further, the pallet separated by the pallet cradle can be stably supported on the floor side through the vertical spacing members that are distributed to the left and right.

[Brief description of drawings]

FIG. 1 shows an example of an embodiment of the present invention and is a front view of a transportation facility using a trolley.

FIG. 2 is a side view of a main part of a transfer facility using the same truck.

FIG. 3 is a plan view of a main part of a transfer facility using the same truck.

FIG. 4 is an overall schematic plan view of a transfer facility using the same truck.

[Explanation of symbols]

 1 Traveling rail 3 Floor 7 Power supply device 9 Constant path 9a Work path part 10 Self-propelled vehicle (carriage) 13 Wheels 16 Travel drive device 19 Current collector 20 Pallet cradle 26 Lifting device 27 Lifting motor 40 Front-rear positioning device 41 Left and right Positioning device 48 Pallet 49 Workpiece 50 First fitting part 51 First pin 52 First hole 55 Ground-side fixed base (upper and lower spacing member) 60 Second fitting part

Claims (1)

[Claims] 1. A trolley which can travel on a fixed route is provided, and a pallet pedestal for placing a pallet is provided on the trolley so that the pallet can be moved up and down. Is provided with a vertical fitting part that is fitted when the pallet is lifted by the raised pallet cradle, and when the pallet cradle is lowered, the pallet is separated from the pallet cradle and supported on the floor side. Conveying equipment using a trolley, characterized in that the vertical spacing holding member is provided so as to be distributed to the left and right with a fixed route direction as the front and rear.