JPH0338054Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications This invention relates to a double-acting tow conveyor.

Conventional technology In general, a double-acting tow conveyor consists of a cart that runs on the floor and a pair of left and right free carts installed on the floor.
The system is equipped with a rail, a pair of front and rear free trolleys that are guided by the free rail, and a power rail that is guided by a power trolley that pulls one of the free trolleys. The front and rear free trolleys were directly connected by U-shaped support members and vertical shaft eaves.
(See Publication No. 4845). However, although this allows the bogie to stop directly above the free rail, it is not possible to stop the bogie at a position laterally away from the free rail. For this reason, in the past, work such as attaching parts, welding, and painting to conveyed objects such as automobile assembly intermediate products placed on trolleys could only be performed on conveyor lines, and therefore these work equipment were required. It is necessary to install the trolley on the conveyor line or in a position very close to the conveyor line, and even when the trolley with objects to be transported is placed on standby, the trolley can only be stopped in series on the conveyor line. This resulted in the problem that a large space was required and the working space within the factory could not be used effectively.

Purpose of the invention This invention solves the above problems and allows the cart to be stopped at a desired point on the conveyor line at a position further to the side. Various work such as attaching parts, welding, and painting can be performed not only on the conveyor line but also at a distance to the side, and the equipment for performing these works can be installed from the conveyor line. The object of the present invention is to provide a double-acting tow conveyor that can be installed at a laterally distant position and can effectively utilize the working space in a factory.

Structure of the invention In order to achieve the above purpose, this invention consists of a trolley that runs on the floor, a pair of left and right free rails installed on the floor, and a pair of front and rear free trolleys guided by the free rails. , a power rail on which a power trolley that pulls one of the free trolleys is guided, and a connecting rod that connects the bogie and the front and rear free trolleys and is swingable in the horizontal and vertical directions. In a dynamic tow conveyor, a roller suspension member, which has a horizontal roller at its tip to prevent the cart from moving laterally, is attached to the cart so that it projects downward and is swingable in a vertical plane. A means for holding the roller suspension member in a hanging state so that the roller enters the gap between the free rails, and a means for holding the roller suspension member in an inclined state so that the horizontal roller protrudes above the gap when the bogie is stopped. The invention is based on a double-acting tow conveyor in which the carriages are each provided with holding means.

Embodiment Next, an embodiment of this invention will be described based on the drawings.

In the drawing, reference numeral 1 denotes a trolley for transporting objects W such as intermediate products for car assembly, and wheels 3 attached to the four corners of the trolley are placed on a pair of left and right rails 4 installed on a floor 2. . 5 is a double-acting tow installed under the floor 2 between both rails 4.
On the conveyor line, this is Pushya Dog 7
a power rail 6 made of a pair of left and right channel steel on which a power trolley 9 runs, which is pulled by a drive chain 8; a front free trolley 11 having a tilting dog 13; and an accumulation cam 14. It is mainly constituted by a pair of left and right free rails 10, 10 made of channel-shaped steel, on which a rear free trolley 12 runs. 16 is a long horizontal front connecting rod that connects the front end of the truck 1 and the front free trolley 11, and 17 is an equally long horizontal rear connecting rod that connects the rear end of the truck 1 and the rear free trolley 12. The front connecting rods 16 and 17 are attached to the truck 1 via joints 18 and 18 so as to be swingable in the horizontal and vertical directions.

Reference numerals 20 and 20 denote a pair of front and rear horizontal rollers for preventing lateral movement of the cart.
1, 21 is attached to the lower end. The upper ends of the roller suspension members 21, 21 are attached to both front and rear brackets 23, 24 via pivots 22, 22, respectively. The brackets 23 and 24 are attached to lower horizontal walls 25a and 25a of U-shaped mounting members 25 and 25 provided at both front and rear ends of the truck 1 in a downwardly projecting manner.
is fixed. Here, the front horizontal roller 2
The roller suspension member 21 with 0 is attached to the front mounting member 2
5, and the rear horizontal roller 2
The roller suspension member 21 with 0 is attached to the rear mounting member 2
Although it is placed in front of 5,
These roller suspension members 21, 21 are swung in the same direction, that is, so that the horizontal rollers 20, 20 move from the bottom to the rear and obliquely upward.

That is, as shown in FIGS. 3 and 4, the bracket 23 supporting the front roller suspension member 21 is attached to the front U-shaped mounting member 25 in a rearwardly projecting manner, and this bracket 23 is connected to the vertical wall 26. , has a horizontal wall 27 provided at the lower end thereof in a rearward overhanging manner, and a pair of left and right side walls 28, 28 provided at right angles to these walls 26, 27, and the roller suspension member 21 is disposed between the left and right side walls 28, 28, and is attached to the upper ends of these walls 28, 28 by a pivot 22. The horizontal wall 27 is provided with a notch 29 into which the lower end of the roller suspension member 21 is fitted and which has an opening that gradually expands toward the rear. On the other hand, the bracket 24 supporting the rear roller suspension member 21
As shown in FIGS. 7 and 8, is attached to the rear U-shaped mounting member 25 in a forward-protruding manner,
This consists of a vertical wall 36, a horizontal wall 37 extending forward from the lower end of the vertical wall 36, and these walls 36, 3.
A pair of long left and right side walls 3 provided at right angles to 7.
8, 38, and a reinforcing wall 40 secured to the tips of the side walls 38, 38, and the roller suspension member 21 is disposed between the front ends of the left and right side walls 38, 38, and It is attached to the upper ends of the walls 38, 38 by a pivot 22. The horizontal wall 37 is provided with a cutout 39 into which the lower end of the roller suspension member 21 is fitted and enlarged from the front end toward the rear, and the left and right side walls 38 are provided with an enlarged cutout 39. Step portions 41, 41 are provided along both side edges of the portion. Therefore,
Both the front and rear horizontal rollers 20, 20 are capable of moving in the same direction from below to rearward and obliquely upward by the swinging of roller suspension members 21, 21.

Roller suspension members 21, 21 on both front and rear sides of the trolley 1
Since the structure of the means for swinging is almost the same,
This will be explained for one front roller suspension member 21.

In FIGS. 3 to 6, 30 is a sliding body that is housed inside a square tubular roller suspension member 21 so as to be able to rise and fall freely, and 31 and 31 are a pair of locks that are horizontally provided on both the left and right sides of this sliding body.・The pins 32, 32 are vertically long elongated pin insertion holes provided on the left and right side walls of the roller support member 21, and the pins 33, 33 are the bracket 2.
A pair of notches for inserting pins are provided in opposite sides of the left and right side walls 28, 28 of the bracket 3, and the rear edge of the notches 33, 33 and the bracket side wall 28,
28 and the upper edges of the rear overhanging portions 28a, 28a, the guide portions 34, 34 are approximately square-shaped when viewed from the side.
are formed respectively. A pair of lock pins 31, 31 attached to the sliding body 30 pass through long holes 32, 32 of the roller suspension member 21 and are fitted into notches 33, 33 of the bracket side walls 28, 28.

As shown in FIGS. 7 and 8, the means for swinging the rear roller suspension member 21 includes a square-shaped notch in the front half of the long left and right side walls 38, 38 of the bracket 24. 43, 43 are provided, and the rear edge of these is seen from the side.
The only difference is that shaped pin guide portions 44, 44 are formed, and the other configuration is exactly the same as that of the front roller suspension member 21.

In the above, when the trolley 1 is running,
Both the front and rear horizontal rollers 20, 20 enter into the gap 15 between the free rails 10, 10, and the upper horizontal walls 10a, 10 of the free rails 10, 10.
a and auxiliary guide rails 19 fixed to the upper surface thereof, thereby preventing the cart 1 from moving in the lateral direction on both the left and right sides.
At this time, both the front and rear roller suspension members 21, 2
The lock pins 31, 31 provided on the sliding bodies 30, 30 in the bracket side walls 28, 30, respectively.
38, and thus both the front and rear roller suspension members 21, 21 are locked so as not to swing in a hanging state. Next, when the trolley 1 reaches the scheduled stop location, the bushing dog 7 and the tilting dog 13 are disengaged by a disengagement cam plate (not shown), as shown in FIGS. 6 and 7. As seen from the side, the trapezoidal lock pin pushing cam plate 35,
45 pushes up the lock pins 31, 31 by the relative movement with the moving truck 1, and moves the vertical parts 34a, 4 along the guide parts 34, 44.
4a to the rear inclined parts 34c, 44c via the front inclined parts 34b, 44b, and as a result, both the front and rear roller suspension members 21, 21 are caused to swing diagonally upward from below in a vertical plane. The horizontal rollers 20, 20 at the lower ends of these rollers move diagonally upward from below to the free rails 10, 1, respectively.
0 is brought out above the gap 15 between the two. 2 in the same figure
As shown by the dashed dotted line, when the lock pins 31, 31 go beyond the upper corners P, P of the square-shaped guide parts 34, 44, the sliding bodies 30, 30 integrated therewith are affected by their own weight. Roller suspension member 2
To move downward within 1,21, after this,
The lock pins 31 and 31 are respectively connected to the guide portion 3.
4, 44, and the roller suspension members 21, 21 are in an inclined state, that is, a state in which the horizontal rollers 20, 20 have escaped upward from the gap 15 of the free rails 10, 10. It is held in In addition, lock pin 3
1, 31 to the rear inclined portion 34 of the guide portions 34, 44.
c, 44c, the height of the upper edge of the trapezoidal lock pin pushing cam plates 35, 45 is made higher than the upper corners P, P of the guide parts 34, 44, respectively, when viewed from the side. There is a need. However, the lock pins 31, 31 may be lifted manually to swing the roller suspension members 21, 21 without using the cam plates 35, 45 as described above.

In the state where the front and rear horizontal rollers 20, 20 escape above the gap 15 of the free rails 10, 10 as described above, the cart 1 can move laterally from the conveyor line 5, and therefore, for example, As shown in Figure 9, the connecting rods 16, 1 on both the front and rear sides
7 to the left side of joints 18 and 18 of trolley 1, respectively.
Bend it 90 degrees and place the trolley 1 on the conveyor.
It can be stopped at a position away from line 5 to the right. Of course, contrary to FIG.
It is also possible to alternately stop the conveyor line 5 at positions away from the conveyor line 5 on both the left and right sides.In other words, various operations can be performed on the conveyed objects W not only on the conveyor line 5 but also on the sides of the conveyor line 5, or on the sides of the conveyor line 5. 1 can be placed on standby.

In addition, when returning the cart 1 to the conveyor line 5, after moving the cart 1 onto the conveyor line 5, the lock pins 31 and 3 are manually inserted.
1, the roller suspension members 21, 21 in the inclined state on both the front and rear sides are returned to the hanging state, and the horizontal rollers 20, 20 are fitted into the gap 15 between the free rails 10, 10.

In addition, in the above embodiment, the horizontal roller 20
Although two roller suspension members 21 equipped with the above are attached to both the front and rear sides of the truck 1, it is sufficient that such horizontal rollers 20 and roller suspension members 21 are attached to at least one location on the truck 1. Also,
When the trolley is running, the horizontal roller 20 is free.
A means for holding the roller suspension member 21 in a hanging manner so as to enter the gap 15 between the rails 10, 10, and a means for holding the roller suspension member 21 in a hanging state so that the horizontal roller 20 protrudes above the gap 15 when the truck is stopped.
The means for holding 1 in an inclined state is not limited to the one shown in the drawings, and other suitable structures may be used.

Effects of the Invention As described above, the present invention includes a cart 1 that runs on a floor 2, and a pair of left and right free wheels installed on the floor 2.
Rails 10, 10 and free rails 10, 10
A pair of front and rear free trolleys 11,1 guided by
2, a power rail 6 on which a power trolley 9 that pulls one of the free trolleys 11, 12 is guided, and a power rail 6 that connects the bogie 1 and the front and rear free trolleys 11, 12, respectively, and horizontally and vertically. In a double-acting tow conveyor equipped with swingable connecting rods 16 and 17, a roller suspension member 21 having a horizontal roller 20 for preventing lateral movement of the cart at its tip is protruded downward and is attached to the cart 1. means for holding the roller suspension member 21 in a hanging state so that it is attached so as to be swingable in a vertical plane so that the horizontal roller 20 enters the gap 15 between the free rails 10, 10 when the trolley is running; Since each of the carts 1 is provided with means for holding the roller suspension members 21 in an inclined state so that the horizontal rollers 20 come out above the gap 15 when the carts are stopped, the carts 1 can be moved along the conveyor line. 5 can be stopped laterally away from the desired location on the conveyor line. Therefore, various operations such as attaching parts, welding, painting, etc. to the conveyed object W placed on the trolley 1 can be carried out on the conveyor line. This work can be carried out not only on top of the conveyor line 5 but also at a position further to the side than this, and the equipment for performing these operations can be installed at a position further to the side from the conveyor line 5. This has the effect of making effective use of the work space.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; Fig. 1 is a partially cutaway side view of the tow conveyor;
The figure is a plan view of the same, and FIG. 3 is an enlarged side view of the main part of FIG. 1, showing the front horizontal roller portion in a running state of the bogie. Fig. 4 is a plan view of the same, Fig. 5 is an enlarged sectional view taken along the line of Fig. 1, and Fig. 6 is an enlarged side view of the main part of Fig. 1, showing the state in which the front horizontal roller is swinging. ing. FIG. 7 is an enlarged sectional view of the main part of FIG. 1, showing the rear horizontal roller portion. 8th
9 is a plan view of the same, and FIG. 9 is a partial plan view of the tow conveyor showing the storage state of the carts. 1... Trolley, 2... Floor, 3... Wheels, 5... Conveyor line, 6... Power rail, 9...
Power trolley, 10...Free rail, 1
1, 12...Free trolley, 16, 17...Connection rod, 20...Horizontal roller for preventing lateral movement of the trolley, 2
1... Roller suspension member, 22... Pivot, 23, 2
4... Bracket, 30... Sliding body, 31... Lock pin, 32... Elongated hole, 33, 43... Notch, 34, 44... Guide portion, 35, 45... For lifting lock pin cam board.

Claims (1)

[Scope of utility model registration request] A trolley 1 running on a floor 2, a pair of left and right free rails 10, 10 installed on the floor 2, a pair of front and rear free trolleys 11, 12 guided by the free rails 10, 10, and a free trolley 11, 12 guided by the free rails 10, 10. Trolley 1
1 and 12, and a connecting rod that connects the trolley 1 and the front and rear free trolleys 11 and 12, respectively, and is swingable in the horizontal and vertical directions. 16,1
7, the cart 1 has a horizontal roller 20 at its tip for preventing lateral movement of the cart.
A roller suspension member 21 is attached so as to project downwardly and swing freely in a vertical plane, so that the horizontal roller 20 enters between the free rails 10 and 15 when the bogie is running. means for holding the roller suspension member 21 in a hanging shape;
When the cart is stopped, the horizontal roller 20 moves for the above period.
A double-acting tow conveyor in which each of the carriages 1 is provided with means for holding the roller suspension members 21 in an inclined state so as to protrude above the roller suspension member 15.