JPH01275257A - Dolly pitch restricting device - Google Patents

Abstract

PURPOSE:To facilitate restriction of the inter-dolly pitch by detaining a chain passing underground at its one end with each dolly, which runs along an underground guide path, extending its other end side to behind the dolly, and by furnishing the following car with a position restricting device which can be put in contact with the other end of the chain. CONSTITUTION:A guide path 24 consisting of C-steel is provided inside a trough 23 formed in the center of the transport path 2, and a drive wheel 10 rotated by a motor 11 is allowed to roll on a left and a right cover 27, 28, which are to close the upper part of this trough 23. An L-shaped arm 18 of a guide member 9 to be moved along the guide path 24 is fixed to a bracket 13 supporting the motor 11, to provide possibility of steering of each dolly 1. The front end of a chain 31 for prevention of front-to-back collision accommodated movably within the guide path 24 is detained behind the dolly 1, and the motor 11 of the following dolly 1 is stopped when an approach switch 21 mounted on the following dolly 1 comes in contact with the tail of the chain, and thus the position of the following dolly 1 is restricted.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to the pitch adjustment between carts in equipment where a workpiece such as an automobile body is placed on a cart and the workpiece is processed while the cart is run along a conveyance line. Relating to regulatory devices.

(Prior art) Conventionally, when the length of the workpiece is longer than the cart used in the workpiece assembly line, in order to avoid damage caused by the carts approaching each other and colliding with each other, it is necessary to It is known to make a rod-shaped stopper protrude from the base and provide a receiving part on the corresponding part of the mating truck to regulate the pitch.

(Problems to be Solved by the Invention) Since the rod-shaped stopper protrudes backward or forward from the cart, it is inconvenient for the worker to cross between the carts, and it is difficult to use on a conveyance path with a curve of large curvature. , there is a risk that the stopper may protrude sideways or come out of the receiving position.

Therefore, there is a need for a pitch regulating device that does not get in the way of workers and that operates without support even when there are curves in the conveyance path.

(Means for Solving the Problems) The means for solving the problems of the present invention includes a guide member that engages with an underground guide path, and a pitch of a cart that is steered by the guide member and travels on the ground. The regulating device is a chain that locks one end of a freely bendable chain that runs underground to a trolley, positions the other end outside the trolley, and is provided with a width regulating member on the guide path side that regulates the amount of bending of the chain. The present invention is characterized in that a position regulating device is provided on an adjacent truck opposite to the other end of the vehicle.

(Function) Since the above-mentioned means is provided, if the chain is extended outside the cart, when two carts approach each other, the chain will come into contact with the stop device of the other cart, and the chain will come into contact with the width regulating member. Since the stop device is prevented from bending, a pressing force is applied to the stop device to regulate the inter-vehicle distance.

(Example) An example will be described below with reference to the drawings. In Figs. 1 to 4, reference numeral 1 denotes a cart, wheels 2 are attached to the four corners of the lower surface, and it runs on a conveyance path 3 to convey a workpiece W. Bumpers 4.5 are installed at the front and rear of the truck. =J is kicked out.

A steering device 7 is also attached to the truck 1, and the steering device 7 includes a traveling unit 8 and a steering guide 9. The traveling unit 8 has a driving wheel 10, a driving motor 11 directly connected to the driving wheel 10, and a brake. The motor 11 and the brake 12 are fixed to a downwardly facing bracket 13 having a U-shaped cross section, and the bracket 13 is fixed to the inner ring of a horizontally rotating bearing 14. The outer ring of the bearing 14 is fixed to a support plate J6 that is pivotally connected to the truck 1 by a hinge]5, and the support plate 16 is pressurized downward by an appropriate pressure mechanism (not shown), and the drive wheel 10
is pressed against the conveyance path 3. When the motor 11 is energized, the drive wheel 10 rotates to make the truck 1 run, and when the motor 11 is de-energized and the brake 12 is applied, the truck 1
stops.

= 3 − The guide member 9 is L fixed to the front wall of the bracket 13
It has a letter-shaped arm 18, guide rollers 19, 20 are attached to the front and back of the lower surface of the arm 18, and a proximity switch 21 is attached to the front end.

This proximity switch 21 acts as a position regulating device for controlling the travel unit 8.

A trough 23 is buried in the center of the conveyance path 2, and is fixed therein by a guide path 24 made of C-shaped steel or a steel material 25, and two parts of the trough 23 are connected to left and right covers 27, leaving a gap 26 in the center. It was closed on the 28th. The arm 18 of the guide portion 9 passes through this gap 26, and the guide rollers 19 and 20 provided on the lower side and the proximity switch 21 are located in the guide path 24, so that the guide path 24 is curved when traveling. If so, the direction of the arm 18 changes accordingly, and the direction of the drive wheel 10 attached thereto is changed to change the traveling direction of the truck, causing the truck to travel along the guide path 24.

A chain locking pin 30 is attached to the rear of the truck 1 so as to be movable back and forth and extends downward within the gap 26, and a chain 31 for preventing rear-end collisions is locked to this. Chen 31
As shown in FIG. 5, the links 32, 33 are connected with the bridge 34 and the pins 34a, 34b so that they can be bent by changing the phase by 90 degrees, and each link supports the roller 35, 3G at right angles. These rollers are 35.3B in length.
The chain 31 is prevented from being bent excessively in the width direction by contacting the inner surface of the guide path 24. Therefore, the guide path 24 acts as a width regulating member for the chain. Then, pin locking bodies 37.3 are placed at appropriate locations on the front and rear of the chain 31.
8 are connected, and the pin 3 is inserted into the locking hole 37a s 38a.
0 can be locked. If the chain 31 is extended as shown in FIG. 1, even if the proximity switch 21 of the following cart comes into contact, there will be a large gap between the carts, so that large workpieces can be handled.

When the chain 31 is retracted to the underside of the chassis and the pin 30 is engaged with the rear locking body 38 as shown in FIG. 6, the chain 3I cannot contact the proximity switch 21 and the pitch regulating action is canceled. The front and rear bogies are regulated by bumpers 5.4.

In the figure, reference numeral 40 denotes a well-known work lifting lid, which has a link 41 and a pallet 42, and is operated by an lifting drive unit 43 consisting of a motor, a brake, a speed reducer, a ball screw, and the like. Further, an overhead wire type power supply device 44 and an operation control device 45 are provided in the trough 23, and these control the travel unit 8 to control the operation of the bogie.

Therefore, if the chain 31 is connected in an extended state, even if a following vehicle approaches while working or traveling, the proximity switch 21 of the following vehicle will collide with the chain 31 and its traveling drive unit 8 will be damaged. enters braking state and stops. At this time, the chain 31 is restricted from bending by the inner surface of the guide path 24, and therefore exerts a sufficient pressing force on the switch 21 to activate the switch.

Next, another embodiment will be described with reference to FIG. 7 and subsequent figures. 7th
8, a rail 51 having a guide portion 51a or a fixing member 52 is fixed in the trough 50. As shown in FIG. An engagement groove 53 is provided on the upper surface of the trough 50, into which a pair of covers 54 with engagement parts 55 are engaged, and the ends of the double force bars 54 and 54 have a gap, and the grooves 56 are engaged with each other. is forming.

Similar to the steering guide 9, the steering guide 5 is attached to the trolley 57 and is integrated with the traveling unit 57a.
8 extends through the groove 56, and as shown in FIG.
It is attached to sandwich the guide portion 51a of No. 1. Further, a stopper 61 as a position regulating device is fixed to the front end of the steering guide 58.

A collision prevention chain 62 is attached to the head 63 on the underside of the truck 57.
It is locked by a locking pin 63 with a
8 is fixed. The chain 62 is shown in FIG. 9(a) (
As shown in b), connect each pair of link plates 64 to pins 65.
A roller-like roller 67 is connected to the lower surface using the pin 65, and a scale-like dust cover 68 is fixed to the upper surface. Locking bodies 69 are located near the front and rear ends of the chain 62.
Wheels 70 and 72 having rollers 71 are connected, and the locking pin 63 is engaged with a locking hole provided in these wheels to fix the chain 62 in a retracted position or an extended position.

The wheels 67, 70, and 72 of the chain 62 are placed on the guide portion 51a of the rail 51, and in this state, the rollers 66 fit into the grooves 56 to prevent the chain from falling down, and the chain is placed in the grooves 56. Therefore, the groove 56 acts as a width regulating member of the chain.

When the following truck approaches with the chain 62 extended rearward, its stopper 61 collides with the stopper 73 of the chain 62, preventing further approach.

To engage and disengage the locking pin 63 from the locking body 69.71, use the head 6.
3a, but it can also be operated from the side of the trolley if an operating mechanism shown in FIG. 10 is provided. In the figure, 74 is an arm fixed to a locking pin, 75 is a pin attached to the arm 74, 76 is a pin fixed to a cart,
Link plates 77 and 78 are pivotally connected to these pins 75 and 76, and a push rod 79 is further connected to form a toggle mechanism. It receives a downward elastic force from a spring 81. A pair of this toggle mechanism can be provided on the left and right sides.

Therefore, when any push plate 80 is pressed, the link 77.
The bending angle formed by pin 78 is reduced to allow pin 63 to be pushed up and out of the locking plate, and when released, spring 81 returns it to the engaged position shown.

In the above embodiments, the proximity switch 21 is used as the position regulating device for the cart in the cart shown in FIG.
Although a stopper 61 is used in the cart shown in FIG. 8, one of these can be selected and used as required.

In addition, although the pin locking bodies 37, 38, 69, and 71 are provided near the front and rear ends of the chain, the mounting positions and number of these pin locking bodies on the chain can be set arbitrarily, so that the desired minimum The distance between carts can be set.

Further, although an example has been shown in which the chains 3 and 62 extend rearward from the cart, the same effect can be achieved even if they extend forward.

(Effects of the Invention) As described above, the present invention allows the chain to cooperate with the position regulating device, so it can adapt to a conveying path that curves with a large curvature, and the curvature is limited by the width regulating device. The pitch of the cart can be regulated by applying sufficient pressing force to the approaching cart.

Furthermore, since the chain is installed underground, it does not get in the way of workers.

[Brief explanation of the drawing]

1 to 6 show an embodiment of the present invention, FIG. 1 is a side view, FIG. 2 is a front view of the guide section, FIG. 3 is a plan view, and FIG. 4 is a plan view of the steering device. Figure 5 is a plan view of the chain, Figure 6 is a side view of the chain when it is shortened, Figures 7 to 10
The figures show other embodiments, FIG. 7 is a front view of the guide part, FIG. 8 is a side view, FIG. 9 (a) is a plan view of the chain, and (b)
10 is a side view, and FIG. 10 is a front view of the locking pin portion. 9...Guide member 21.61...Position regulating device 24...Guide path 31.82...Chain 5G...Groove Patent Applicant: Honda Motor Co., Ltd.
Professor Kin Kitamura −
3 other people

Claims (1)

[Claims] 1. A pitch regulating device for a bogie that has a guide member that engages with an underground guide path and that is steered by the guide member and runs on the ground, the pitch regulating device for a bendable chain passing underground. A width regulating member is provided on the guide path side, one end of which is locked to the trolley, the other end is located outside the trolley, and which regulates the amount of bending of the chain, and the width regulating member is positioned opposite to the other end of the chain and is positioned on the adjacent trolley. A pitch regulating device for a bogie, characterized in that it is provided with a device. 2. The pitch regulating device for a bogie according to claim 1, wherein the width regulating member is a groove. 3. The pitch regulating device for a bogie according to claim 1, wherein the width regulating member is the guide path. 4. The pitch regulating device according to claim 1, wherein the guide path has a substantially C-shaped cross section that opens upward.