JPH09226647A - Detecting device for conveying carriage in floor conveyer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate obstructing in walking of a worker and effectively utilizing of a floor surface, by preventing a detecting device of a conveying carriage from protruding to an upper surface of a floor panel. SOLUTION: A trolley 7 of a conveying carriage, guided with trolley wheels 61 , 62 by a pair of right/left upper part guide rails 2 laid in a lower surface of a floor panel 1, is moved to run by towing a dog 14 with an endless chain 5 circulated to be guided by a lower part guide rail 4. A swivel member 43 pivotally supported through a pivotal shaft 42 to the one upper guide rail 2 has a detection member 50 appearing in a moving route of a dog support part 27 of the trolley 7 and an operating member 48 capable of coming into contact with a detector piece 52 of a limit switch 51. The conveying carriage leads to a prescribed position, when the dog support part 27 presses the detection member 50, the swivel member 43 is swiveled, an operator piece 52 is pressed by the operating member 48, the limit switch 51 is turned on.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for detecting a carrier truck on a floor conveyor for detecting that the carrier truck on the floor conveyor has reached a predetermined position.

[0002]

2. Description of the Related Art In a floor conveyor that conveys a work carriage carrying a work by pulling it with an endless chain, there is known a detection device for detecting when a work carriage reaches a predetermined position by a limit switch.

FIG. 5 and FIG. 6 show a conventional detection apparatus for a carriage on a floor conveyor.
A limit switch 62 is housed inside a protective box 61 provided so as to project from the upper surface of the protective box 61, and a detector 63 of the limit switch 62 faces a window portion 61a formed in the protective box 61. On the other hand, actuating members 64, 64 are provided on both left and right side surfaces of the trolley 7 of the transport carriage that is guided by the guide rails 2, 2 laid on the lower surface of the floor panel 1, and when the transport carriage reaches a predetermined position. The limit switch 62 is operated by one of the operating members 64 entering the window portion 61a of the protection box 61 and pressing the detector 63. 5 and 6, members common to the embodiment of the present invention shown in FIGS. 1 to 4 are given the same reference numerals as those of the members.

[0004]

By the way, in the above-mentioned conventional one, since the limit switch 62 and the protection box 61 are projected to the upper surface of the floor panel 1, the limit switch 62 and the protection box 61 become projections and work. Not only does it hinder the walking of people, but it also hinders effective use of the floor surface.

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide a detection apparatus for a carrier truck which does not hinder the walking of an operator or the effective use of the floor surface.

[0006]

In order to achieve the above-mentioned object, the present invention supports a trolley of a carrier truck for carrying and carrying a work by a pair of left and right guide rails laid on the lower surface of a floor panel, and the trolley. By engaging the dog supported on the dog support portion provided in the endless chain that moves below the guide rail, in the floor conveyor to run the transport carriage along the guide rail,
The upper part of the swinging member is swingably supported on one of the left and right guide rails via a pivot so that the swinging member is provided with a detecting member so as to project to the movement path of the dog supporting portion of the trolley. Further, the detector of the limit switch faces the swing locus of the actuating member provided below the swing member.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on embodiments of the present invention shown in the accompanying drawings.

1 to 4 show an embodiment of the present invention. FIG. 1 is a vertical sectional view of a floor conveyor, and FIG.
FIG. 3 is an enlarged view of a portion, FIG. 3 is a sectional view taken along line 3-3 of FIG. 2, and FIG.

As shown in FIG. 1, a floor conveyor C that conveys a work W, such as an automobile body, has a pair of left and right upper guide rails 2 and 2 which support the work W and are laid on the lower surface of the floor panel 1. And a endless chain 5 guided along lower guide rails 4 and 4 laid in parallel below the upper guide rails 2 and 2 so as to pull the carrier 3. Prepare

The carrier vehicle 3 has upper guide rails 2 and 2.
Two left and right first trolley wheels 6 ₁ guided by
And a first trolley 7, a second trolley 8, a third trolley 9 and a fourth trolley 10 each having a pair of front and rear second trolley wheels 6 ₂ ...
And the second trolley 8 are connected by the front load bar 11, the third trolley 9 and the fourth trolley 10 are connected by the rear load bar 12, and the second trolley 8 is further connected.
The third trolley 9 is connected to the upper part by a carrier 13 that supports the work W.

The transporting trolley 3 having such a structure travels by being pulled by the endless chain 5 by engaging the dog 14 swingably provided on the first trolley 7 at the front end thereof with the endless chain 5 and running. It is stopped by detaching 14 from the endless chain 5. Further, when the succeeding carriage 3 approaches from behind the stopped carriage 3, the cam member 15 provided on the fourth trolley of the stopped carriage 3 causes the dog 14 of the succeeding carriage 3 to move clockwise. It is possible to store a plurality of transport carriages 3 by swinging it to separate it from the endless chain 5.

[0012] endless chain 5 will be pivoted to the first link 16 ₁ ... and the second link 16 ₂ ... alternately, the body portion 19 ... continuing to the bottom of each first link 16 ₁ ..., the lower guide rail 4 , 4 left and right two first guide rollers 17 ₁ ... and one second guide roller 17 ₂ ... are provided, and the dogs 14 are engaged on the upper part of the main body portions 19 ... every predetermined number. Mating engagement projections 18 ... Are provided.

As will be apparent by referring to FIGS. 2 and 3 together, the first trolley 7 has the first trolley wheels 6 ₁ ...
The main body lower portion 21 for supporting a main body upper 22 to the upper support of the second trolley wheel 6 ₂ ... by integrally connected to the lower body 21, is fixed to the upper body 22 connecting member 2
And a pair of left and right side plates 24, 24 connected to the front load bar 11 via the three. The upper guide rails 2 and 2 are made of channel material with recesses facing each other, and the first trolley wheel 6 ₁ is guided to the inner surface of the recess, and the second trolley wheel 6 ₂ is provided between the upper end edges thereof. Be guided. The upper part 22 and the side plates 24, 24 of the first trolley 7 are exposed on the upper surface of the floor panel 1 through the slits 25 formed in the floor panel 1.

Second trolley 8, third trolley 9 and fourth
The structure of the trolley 10 is substantially the same as the structure of the first trolley 7 described above.

The dog 14 is pivotally supported by a pin 26 on a lower portion 21 of the main body 21 of the first trolley 7 so as to be swingable back and forth through a pin 26. The counterclockwise swing end of the dog 14 is regulated by contact with the lower surface of the dog support portion 27, and the clockwise swing end contacts with the upper surface of a stopper 28 projecting downward on the lower part 21 of the main body. Regulated by The dog 14 is pressed by an engaging recess 29 into which the engaging projections 18 of the endless chain 5 can be fitted, an inclined surface 30 that can abut the cam member 15 of the fourth trolley 10, and a solenoid (not shown) or the like. And an operating portion 31 for swinging the dog 14.

The lower guide rails 4 and 4 are made of channel material in which the recesses are opposed to each other, and the first guide rollers 17 ₁ of the endless chain 5 are guided to the inner surface of the recesses, and the first guide rollers 17 ₁ ... 2 Guide rollers 17 ₂ are guided. The endless chain 5 is circularly driven by a drive source (not shown).

The upper guide rails 2 and 2 and the lower guide rails 4 and 4 are supported by the facing surfaces of the left and right columns 33 and 33 which are erected on the floor 32 and support the floor panel 1 at the upper ends.

A pair of front and rear brackets 41, 41 are welded to the outer surface of one of the upper guide rails 2, and a swinging member 43 is suspended between the upper ends of the brackets 41, 41 via a pivot 42 so as to swing freely from side to side. Set up. The rocking member 43 is L
A first member which is formed in a letter shape and whose upper end is pivotally supported by the pivot shaft 42.
The member 44, a second member 45 formed in a plate shape and welded to the first member 44, and the second member 4 at the lower end of the second member 45.
Two bolts 46,46 so that the distance to 5 can be adjusted
And a plate-shaped third member 47 fixed via the. An operating member 48 in which a wire is bent in an L shape is welded to the lower end of the third member 47. Further, a swing restricting member 49 that contacts the first member 44 and restricts the swing of the swinging member 43 toward the upper guide rails 2, 2 is provided on the outer surface of the one upper guide rail 2.

A first L-shaped member projecting laterally
The detection member 50 provided at the side end of the member 44 is arranged so that its front end 50a is located near the center line L of the conveyor C and its rear end 50b is inclined so as to be separated from the center line L. When the swinging member 43 vertically hangs and is in contact with the swinging restricting member 49, the detecting member 50
The front half portion of the is protruding to the moving path of the dog support portion 27 on the front side.

A limit switch 51 is provided on the right column 33 located near the swinging member 43, and a detector 52 of the limit switch 51 is provided with the operating member 48.
Facing the swinging trajectory of the tip of.

Next, the operation of the embodiment of the present invention having the above configuration will be described.

When the carriage 3 of the trolley conveyor C is in front of the predetermined position to be detected, the swinging member 43 hangs downward due to gravity about the pivot 42 as shown in FIGS. , Its left side surface is in contact with the rocking restricting member 49 and is stopped, and the limit switch 51 is O
It is in the FF state.

When the carriage 3 moves forward and reaches a predetermined position, the dog support member 2 of the first trolley 7 is shown in FIG.
7 abuts on the detection member 50 that projects laterally from the swing member 43, and presses the detection member 50 to swing the swing member 43 in the direction of arrow a. As a result, the actuating member 48 provided below the swinging member 43 causes the limit switch 5 to move.
By pressing the detector 52 of No. 1 in the direction of arrow b, the limit switch 51 is turned on. When the carrier 3 passes through the predetermined position and the dog support member 27 separates from the swing member 43, the swing member 43 returns to the original position by gravity.

When the limit switch 51 detects that the transport carriage 3 has reached the predetermined position in this way,
For example, by operating a solenoid (not shown) and pressing the operating portion 31 of the dog 14 downward to release the engagement with the endless chain 5, the carriage 3 can be stopped at the predetermined position.

As is clear from comparison between FIGS. 3 and 6, according to the present embodiment, the pivot 42 for detecting the carriage 3, the swinging member 43, the detecting member 50, the operating member 48 and the limit switch 51 are provided. Since they are all arranged under the floor panel 1, there is no fear that they will interfere with the walking of the operator or interfere with the effective use of the floor surface. Further, since the rocking member 43 is supported by using the one guide rail 2, it is not necessary to provide a special member for the support, and the number of parts is reduced. Further, the dog supporting portion 27 of the first trolley 7 is used to detect the detecting member 50.
Since it is pressed, it is not necessary to provide a special member for pressing the detection member 50, and the number of parts is reduced.

The embodiments of the present invention have been described in detail above, but the present invention can be modified in various ways without departing from the scope of the invention.

[0027]

As described above, according to the present invention, the detection member is provided so as to project to the movement path of the dog support portion of the trolley by the swing member pivotally supported by the guide rail so as to be swingable left and right. And the detector of the limit switch is exposed to the swing locus of the operating member provided on the swing member,
When the carrier arrives at a predetermined position, the dog support portion of the trolley is brought into contact with the detection member to swing the swinging member, and the operating member provided on the swinging member presses the detector of the limit switch. It is possible to reliably detect the carrier truck. Further, since the pivot, swing member, detecting member, actuating member and limit switch are arranged at the bottom of the floor panel, they protrude above the floor panel and interfere with the walking of the operator, and the floor surface is effective. There are no obstacles to using it. Moreover, since the pivot of the swinging member is provided by using the guide rail, it is possible to eliminate the special member for supporting the pivot to reduce the number of parts, and to use the dog supporting portion of the trolley. Since the detection member is pressed by the above, it is possible to eliminate the special member for pressing the detection member and reduce the number of parts.

[Brief description of drawings]

[Figure 1] Vertical sectional view of the floor conveyor

FIG. 2 is an enlarged view of a part of FIG. 1;

FIG. 3 is a sectional view taken along line 3-3 in FIG. 2;

FIG. 4 is an explanatory diagram of an operation.

FIG. 5 is a diagram corresponding to FIG. 2, showing a conventional example.

FIG. 6 is a sectional view taken along line 6-6 in FIG. 5;

[Explanation of symbols]

 1 floor panel 2 upper guide rail (guide rail) 3 carrier 5 endless chain 7 first trolley (trolley) 14 dog 27 dog support 42 pivot 43 swing member 48 actuating member 50 detecting member 51 limit switch 52 detector W work

Claims (1)

[Claims] 1. A trolley (7) for carrying a work (W) loaded and carrying a trolley (3) is supported by a pair of left and right guide rails (2) laid on the lower surface of the floor panel (1). By engaging a dog (14) supported by a dog support portion (27) provided under the guide rail (7) with an endless chain (5) moving below the guide rail (2), the guide rail (2) In the floor conveyor for moving the carriage (3) along, the upper part of the rocking member (43) is pivotally supported on one of the left and right guide rails (2) via the pivot shaft (42) so as to be rockable left and right. A detecting member (50) is provided on the swinging member (43) so as to project to the movement path of the dog support portion (27) of the trolley (7), and further provided below the swinging member (43). The movement trajectory of the operating member (48) Characterized in that to face the detector (52) of Ttosuitchi (51), the detection device of the conveyance truck in the floor conveyor.