JP2597454B2 - Roller cart for transporting heavy objects - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller truck for transporting heavy objects, for example, used for transporting heavy objects such as workpieces stored in component buckets or trays.

[0002]

2. Description of the Related Art When a work, which is stored in, for example, a component bucket or a tray and flows on one conveyor, is transferred onto a conveyor provided separately from the conveyor, a transport roller cart is used. A conventional transport roller cart has a caster body provided with a caster at a lower part and a work transfer path formed by a plurality of rollers parallel to each other at an upper part, and a work body provided at a tip of the work transfer path so as to be freely protruded and protruded upward. A work stopper that comes into contact with the work when the work is stopped and restricts the movement of the work; And a bogie stopper for restricting the movement of the vehicle.

[0003] The transporting roller cart is arranged opposite to the carry-out port of one conveyor, receives the workpiece flowing out of the conveyor while transporting the workpiece along the rollers, and after receiving the workpiece, places the workpiece stopper on the workpiece transport path. To prevent the work from dropping from the roller carriage as a stopper state, transfer the work to another conveyor in this state, and after being placed facing the other conveyor, release the stopper state of the work stopper, By transferring the work along the rollers, the work can be transferred onto another conveyor.

[0004]

However, in the above-described conventional heavy-carriage roller cart, the work stopper is provided independently irrespective of the cart stopper.
Since the stopper state or the stopper state can be released by itself, the work stopper may be released alone during transportation or the like, and the work may fall from the bogie main body.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a roller cart for transporting heavy objects, which can prevent a work from dropping from a truck body during transportation. It is.

[0006]

To achieve the above object, according to the first aspect of the present invention, a bogie body includes a caster at a lower portion and a work transfer path including a plurality of parallel rollers at an upper portion. A work stopper that is provided so as to be able to protrude and retract in the work transfer path and projects upward, and a work placed on the roller comes into contact with the work stopper to regulate the movement of the work; A roller stopper for carrying heavy goods, comprising a carriage stopper that is provided so as to be able to protrude and retract toward the floor surface and restricts the movement of the carriage body when in a stopper state protruding downward, wherein the carriage stopper is in the stopper state. When not
Prevents release of the workpiece stopper, the carriage stopper interlocking mechanism can not be released stopper state of the workpiece stopper only when the stopper state before
Between the work stopper and the bogie stopper
It is provided in operative relation .

In the invention described in claim 2, the interlock mechanism has a side bar connected to the work stopper at a position above a stopper shaft extending upward from a bogie stopper. At a position directly above the stopper shaft, a short member and a long member are attached in a circumferential direction with a predetermined nip angle, and when the bogie stopper is in a stopper state, rotation of the side bar is not restricted, and the bogie stopper is not provided. Is released from the stopper state, the rotation of the side bar is restricted by the interference of the long member with the tip of the stopper shaft.

[0008]

According to the present invention, the interlock mechanism is provided between the work stopper and the bogie stopper, so that the stopper state of the work stopper can be released only when the bogie stopper is in the stopper state. Therefore, the workpiece stopper is held in the stopper state during the transport of the workpiece, and the workpiece can be prevented from dropping from the bogie main body.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view showing the entire roller truck for carrying heavy objects. Reference numeral 1 in the figure denotes a bogie main body,
The steel is assembled into a rectangular parallelepiped shape by connecting means such as welding. At the lower four corners of the bogie main body 1, casters 2... That can freely change the traveling direction are attached. At the upper part of the bogie main body 1, a plurality of rollers 3. Is formed.

In the drawing, reference numeral 6 denotes a plate-like work stopper provided at the front end of the work transfer path 4 so as to be able to protrude and retract. The work stopper 6 is eccentric to the front end of a side bar 8 that is rotatably supported by support pipes 7 attached to the bogie main body 1 at both front and rear ends thereof and that is supported below the roller 3. As shown in FIGS. 3 and 4, when the side bar 8 is rotated through a handle portion 8a provided at the rear end of the side bar 8, the end portion is attached by welding. The state in which the roller 3 is projected upward from the upper line 3a and the upper line 3a as shown in FIG.
It can be switched to either flush or slightly lower. Then, the work stopper 6 is moved to the upper line 3 of the roller 3 as shown in FIG.
When it is projected above the position a, it comes into contact with the work placed on the roller 3 to restrict the movement of the work. That is, the work stopper 6 and the side bar 8 constitute a work stopper mechanism for preventing the work from dropping from the bogie main body 1. Note that the sidebar 8
Is restricted by a stopper (not shown) so that its rotation range is within 90 degrees.

Reference numeral 10 in the figure denotes a bogie stopper provided below the bogie main body 1 so as to be freely retractable. Bogie stopper 1
Numeral 0 is vertically inserted into a cylindrical body 12 supported by a connecting plate 11 extending from the bogie main body 1, and a disk 10a is attached to a lower end thereof. When the foot operation unit 13 constituting the link mechanism interposed between the bogie stopper 10 and the cylindrical body 12 is pressed downward,
The disk 10a is moved downward against the urging force of the spring 14 interposed between the cylindrical body 12 and the state is maintained by the link mechanism. It becomes a stopper state for restricting the movement. When the foot operation unit 13 is pressed again from this state, the bogie stopper 10 is released from the stopper state, and is moved upward by the urging force of the spring 14, whereby the bogie main body 1 can freely move. . That is, the bogie stopper 10,
The cylindrical body 12 and the foot operation unit 13 constitute a bogie stopper mechanism for restricting the running of the bogie main body 1 as necessary.

[0012] between the carriage stopper 10 and the workpiece stopper 6, only when the carriage stopper 10 of the stopper state, the interlock mechanism 15 can not be released stopper state of the work stopper 6, Wakusuto
Oper 6 as will be described later
It is arranged with relation .

The specific structure of the interlock mechanism 15 will be described.
0, and the short member 16 and the long member 17 are shifted in the circumferential direction by 90 degrees in the circumferential direction at a position corresponding to the position just above the bogie stopper 10 of the side bar 8. It is provided. A stopper shaft 10b coaxially extending above the carriage stopper 10;
The upper end is inserted into a guide portion 18 provided on the bogie main body 1 so as to extend to the vicinity of the side bar 8.

The relationship between the short member 16 and the long member 17 and the work stopper 6 as viewed from the axial direction of the side bar 8 is such that the short member 16 is shifted from the work stopper 6 by 180 degrees as shown in FIG. And a long member 1
The reference numeral 7 is provided at an angular position just intermediate between the work stopper 6 and the short member 16.

The relationship between the long member 17 and the stopper shaft 10b is as shown in FIG.
When is lowered to the stopper state,
Although the long member 17 is allowed to freely rotate and turn to a state in which it faces directly below the bogie stopper 10, when the bogie stopper 10 is lifted upward and the stopper state is released, it is shown in FIG. As described above, the relative lengths of the long member 17 and the stopper shaft 10b are determined so that the tip of the long member 17 abuts on the upper end of the stopper shaft 10b to restrict free rotation. Note that reference numeral 19 in FIG. 1 denotes a handle for moving the roller cart.

A case where a workpiece is transferred from one conveyer to another conveyer by the heavy goods transporting roller cart having the above configuration will be described. First, the roller cart is disposed to face the carry-out port of one conveyor. In this state, the foot member 13 is pressed to lower the carriage stopper 10 to fix the roller carriage. In this case, the work stopper 6 is rotated via the side bar 8 by operating the handle portion 8a, and is previously lowered as shown in FIG.

The work flowing out of one conveyor is transferred onto the roller carriage while being transferred along the rollers 3. When the transfer of the work is completed, the handle portion 8a is rotated rightward in FIG. 5 to bring the work stopper 6 into a state of protruding above the work transfer path 4, as shown in FIG. After that, the foot member 13 is depressed to release the stopper by the bogie stopper 10. At this time, the bogie stopper 10 and the upper stopper shaft 10b are urged upward by a spring 14, so that the upper end of the stopper shaft 10b is short as shown in FIG.
6 to restrict the rotation of the short member 16. This makes it difficult for the short member 16 and the work stopper 6 connected thereto via the side bar 8 to rotate, and the stopper state is maintained.

Even if the engagement between the short member 16 and the stopper shaft 10b is released by a force such that the work stopper 6 is rotated, etc., FIG.
Since the long member 17 hits the upper end of the stopper shaft 10b and the rotation of the side bar 8 is restricted, the work stopper 6 projects above the upper line of the roller 3 as shown in FIG. The stopper state is maintained.

In this state, the work is transported to another conveyor while being placed on the roller carriage. After the roller bogie is placed opposite to another conveyor, the foot member 13
Is again depressed to lower the bogie stopper 10, and the bogie stopper 10 fixes the roller bogie. At the same time, the interference between the long member 17 and the stopper shaft 10b is eliminated, and the side bar 8 is rotated leftward in FIG. 5 by operating the handle portion 8a to move the work stopper 6 below the upper line of the roller 3. Lower. That is, the work stopper 6 is released from the stopper state, and then the work can be transferred along the roller 3 and transferred to another conveyor. When a work is transferred between the roller carriage and the conveyor, a locking portion is provided at the end of the conveyor so that the work stopper 6 can be locked, so that the roller carriage can be securely fixed together with the carriage stopper 10 to improve workability of the work transfer. Is improved.

[0020]

According to the present invention, the interlock mechanism between the work stopper and the carriage stopper can release the stopper state of the work stopper only when the carriage stopper is in the stopper state. Is provided, even if an operator or the like erroneously releases the work stopper during the transport of the work, the work stopper is held in the stopper state because the bogie stopper is not operated. Therefore, it is possible to prevent the work from dropping during the transport operation, and prevent the work from being damaged. According to the second aspect of the present invention, all of the interlock mechanisms can be realized only with a mechanical configuration and with a simple configuration.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a relationship among a work stopper, a bogie stopper, and an interlock mechanism.

FIG. 3 is a sectional view showing the operation of the present invention.

FIG. 4 is a sectional view showing the operation of the present invention.

FIG. 5 is a sectional view showing the operation of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cart body 2 Caster 3 Roller 3a Upper line of roller 4 Work transfer path 6 Work stopper 7 Support pipe 8 Sidebar 10 Cart stopper 13 Foot member 14 Spring 16 Short member 17 Long member

Claims (2)

(57) [Claims] 1. A bogie main body having a caster at a lower part and a work transfer path formed by a plurality of rollers parallel to each other at an upper part, and a stopper state provided in the work transfer path so as to be freely protrudable and retractable and protruding upward. When the workpiece mounted on the roller comes into contact with the workpiece stopper to regulate the movement of the workpiece, the workpiece stopper is provided on the bogie main body so as to be able to protrude downward and protrude downward, and is in the state of a stopper protruding downward and on the floor. A roller truck for transporting heavy goods, comprising a bogie stopper for abutting and restricting movement of the bogie body;
Work stopper when the car stopper is not in the stopper state
Of the release preventing, the interlock mechanism carriage stopper can not only when the stopper state releases the stop state of the workpiece stopper the workpiece stopper
Between the pallet and the bogie stopper.
A roller cart for carrying heavy objects, characterized in that it is provided with: 2. The interlock mechanism is provided at a position above a stopper shaft extending upward from a bogie stopper.
A side bar connected to the work stopper is arranged, and a short member and a long member are attached to the side bar immediately above the stopper shaft so as to be shifted in the circumferential direction at a predetermined clamping angle, and the bogie stopper is provided. A configuration in which the rotation of the side bar is not restricted when the stopper state is established, and the rotation of the side bar is restricted by the interference of the long member with the tip of the stopper shaft when the bogie stopper is released from the stopper state. The roller truck for transporting heavy goods according to claim 1, wherein: