JPH0112999Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a hanger for a trolley conveyor.

As a hanger for a trolley conveyor, when the object to be conveyed is a large and heavy object such as a car body,
There is known a device that receives and supports an object to be conveyed from the bottom surface and suspends it from a trolley. A conveyor equipped with such a hanger,
The hanger transfer space is a major factor that determines the size of the conveyor installation space, and a considerable conveyor installation space is required to secure the hanger transfer space.

By the way, with conventional trolley conveyors, not only can the hanger be used not only on the forward line when the conveyed object is placed on the hanger, but also on the return line when the hanger is empty and no conveyed object is placed on it. Since a certain amount of hanger transfer space is also required in the line, it is sometimes difficult to secure this space. In particular, when it is desirable to stack two lines in two layers, one above the other, due to the layout of the conveyor line, it is often difficult to secure the above-mentioned space due to restrictions due to the height of the ceiling.

The purpose of this invention is to provide a hanger that can solve the above-mentioned problems and reduce the installation space of the conveyor.

According to this invention, the trolley/conveyor hanger is swingably suspended from the trolley at a predetermined distance in the front and back direction at the upper part, and has a plurality of arms having a place for carrying objects at the lower part, and each arm has a It is equipped with a connecting rod whose both ends are connected by a pin, and means for swinging at least one of the arms.

The arms may be provided on both the left and right sides of the transfer space for the transported object, or may be provided only on one of the left and right sides.

As a means for swinging the arm, a guide rail provided along the running direction of the trolley may be used, or a driving source such as a fluid pressure cylinder may be used.

In this specification, "front and rear" refers to the traveling direction of the trolley, and "left and right" refers to forward.

According to this invention, a plurality of arms each having a loading section for the transported object at the lower part are suspended from the trolley at the upper part at a predetermined distance apart from each other in the front and back direction, so that the transported object can be placed on the plurality of arms. Since both ends of the connecting rod are connected to each arm with a pin, the distance between each arm is kept constant, which not only allows the object to be transported in a stable posture. Since the upper part of the arm is swingable in the front and rear directions with respect to the trolley, the arm can be folded from a suspended vertical position to an almost horizontal position using means for swinging the arm. By folding the arm as described above when there is no object to be conveyed, the transfer space of the arm is reduced, and therefore the transfer space of the hanger can be reduced, which in turn reduces the installation space of the conveyor. can be small.

Hereinafter, embodiments of this invention will be described with reference to the drawings.

FIG. 1 shows two double-acting trolley conveyors 1 and 2 installed in upper and lower stages. A conveyed object W is supported on the first conveyor 1 at the bottom. Also, on the second conveyor 2 on the upper side, there is an object W to be conveyed.
is not supported. The object to be transported W is a car body. The two conveyors 1 and 2 are on separate lines that draw separate loops in the horizontal plane, but in FIG. 1, the line on the forward side of the first conveyor 1 is the line on the return side of the second conveyor 2. are shown respectively. Further, the constituent elements of both conveyors 1 and 2 are the same, and the first conveyor 1 will be described below as a representative of both conveyors 1 and 2.

The double-acting trolley conveyor 1 has a power line 3 and a free line 4. Power line 3 includes rail 5 and drive chain 6
and a trolley 9 which has a propeller 7 and a roller 8 rotatably received by the rail 5 and which is connected to the drive chain 6 at a predetermined distance. The propulsion tool 7 has a hook at the lower end,
It is swingably supported by a shaft and slants diagonally downward at the rear due to its own weight. free·
The line 4 includes a rail 10, a front trolley 12 having a pair of front and rear tilting dogs 11, a rear trolley 14 having a rearward protruding cam 13 for pushing up the propulsion device, and both front and rear trolleys 12, 14. Two intermediate trolleys 15 and 16 located in the middle, these intermediate trolleys 15 and 16, and the front and rear trolleys 1
Front and rear connecting rods 17, which connect 2 and 14, respectively.
18 and a connecting frame 19 connecting two intermediate trolleys 15 and 16, and a hanger 20 according to this invention is attached to this connecting frame 19. Each trolley 12, 14, 15, 16
has rollers 21, and these rollers 21 are rotatably supported by the rail 10. power·
The hook of the propeller 7 of trolley 9 is free at the front of trolley 1.
By engaging the two tilting dogs 11, each free trolley 12, 14, 15, 16 is driven forward. The connection frame 19 is a rectangular cylindrical pipe frame that is rectangular when viewed from above, and a hanging rod 22 is attached to the center of the length of the front and rear members so as to project upward. The upper end of each hanging rod 22 is connected to two intermediate trolleys 15 and 16 by a horizontal pin 23, respectively.

The hanger 20 is swingably suspended from the intermediate trolleys 15 and 16 at a predetermined distance in the front-rear direction via a connecting frame 19, and has a front and rear part that has a placement part for the transported object W at the lower part. Arm 24,2
5, a connecting rod 26 whose both ends are connected with a pin to the intermediate portion of both arms 24, 25, and both arms 24,
25, means 2 for swinging the front arm 24
7.

As shown in FIG. 1, the arms 24 and 25 are made of cylindrical pipes drawn in a smooth curve so that the lower end serves as a loading area for the transported object W when viewed from the front and rear directions.
They are bent in the shape of a letter, and are suspended from the connection frame 19 in pairs on the left and right with their bent portions facing each other at respective positions in the front-rear direction. Mounting brackets 29, 30 are fixed to the upper ends of each arm 24, 25. On the other hand, horizontal support shafts 31 and 32 are provided on the left and right members of the mounting frame 19 to project outward in the left-right direction. Since each bracket 29, 30 is rotatably supported by support shafts 31, 32 via bearings 33, 34, each arm 24, 25 can swing freely in the front and back direction. In addition, receiving plates 35 and 36 are attached to the mounting portions of the arms 24 and 25 on which the transported object W is placed.

Further, among the front and rear arms 24 and 25, the center positions of the receiving plate 36 and the support shaft 32 of the rear arm 25 are shifted from each other by a predetermined amount in the front-rear direction. The center of the support shaft 32 is in front of the center of the receiving plate 36. In FIG. 2, this amount of deviation is indicated by e. On the other hand, a stopper bolt 37 is provided near the upper end of the front arm 24. This bolt 37 is screwed into a screw body 38 fixed to the side of the connecting frame 19, and its head abuts against the front surface of the mounting bracket 29 of the arm 24. Further, a length adjusting nut 39 is screwed into the bolt 37. When the transported object W is placed on the hanger 20, a clockwise rotational moment M is generated in the rear arm 25 about the support shaft 32 in the clockwise direction in FIG.
The front and rear arms 24, 25 are connected by a connecting rod 26, and the same moment M also acts on the front arm 24 to try to rotate it, but a stopper bolt 37 prevents this. That is, the hanger 20 is urged forward by the weight of the object W being transported, and the posture of the object W during transportation is maintained stably.

The means 27 for swinging the front arm 24 consists of a wheel 40 attached to the lower end of the front arm 24 and a guide rail 41 for this wheel 40. The guide rail 41 is provided along the traveling direction of each trolley 12, 14, 15, 16 at a required portion of the conveyor transport route. In Fig. 1, the second conveyor 2
A guide rail 42 is shown. Guide rail 4
The height at which the arms 24 and 25 are installed is midway between the upper end and the lower end, with the arms 24 and 25 hanging down vertically, and is above the center. Further, the guide rail 41 is smoothly connected to a slope portion 43 that slopes upward in the front at a starting point in the running direction, and a slope portion (not shown) that slopes downward in the front at the end point.

It is now assumed that the hanger 20 is being transported forward in an empty state with no object W on it. At this time, each arm 24, 25 hangs down vertically. Eventually the hanger 20 becomes the guide rail 4
1, and when the wheels 40 of the arm 24 approach the inclined part 43, the arm 24
The lower end portion of is gradually lifted, and as a result, the front and rear arms 24, 25 swing and rotate about the support shafts 31, 32. Then, the wheel 40
When the robot climbs up, each arm 24, 25 assumes a rearward, almost horizontal position and is folded. Further, after the arms 24 and 25 are transported a predetermined distance in a folded state, when the wheels 40 finish descending the downward slope in the front, the arms 24 and 25 return to their original vertical positions and can load the transported object W. become a state.

As described above, by folding the arms 24, 25, the vertical lengths of the upper and lower ends of the arms 24, 25 are shortened, and the arms 24, 25 are folded by that amount.
The transfer space of 25 becomes smaller.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, with FIG. 1 being a front view and FIG. 2 being a side view. 15, 16... Trolley, 24, 25... Arm, 26... Connection rod, 27... Arm swinging means, W... Object to be transported.

Claims (1)

[Scope of utility model registration request] A plurality of arm parts 24, 25 are swingably suspended from the trolleys 15, 16 at a predetermined distance in the front and back direction at the upper part, and have a mounting part for the transported object W at the lower part.
A trolley conveyor comprising: a connecting rod 26 having both ends connected to each arm 24, 25 with a pin; and means 27 for swinging at least one of the arms 24, 25. Hanga.