JPH0530075Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a safety device for preventing falls of diagonal conveyance equipment such as hoisting devices for coke buckets in coke dry fire extinguishing equipment (CDQ), etc. .

[Prior art] The coke bucket hoisting device in the conventional CDQ separates the coke bucket hoisting and the oblique movement of the hoisting truck, and uses a common hoisting device a as shown in Fig. 10. The diagonal conveying equipment d, which hoists the coke bucket b and skews the hoisting cart c, has not yet been implemented.

[Problems to be solved by the invention] However, when planning and implementing such diagonal transportation equipment d, when descending diagonally, the hoisting cart c
If the hoist stops for some reason (for example, the wheels e or the hoisting cart c hit an obstacle g such as the frame or furnace top equipment), hoisting and skewing are performed by a single hoisting device a. Therefore, there is a risk that the suspended coke bucket b and the hanging beam f may be lowered and cause an accident.

[Means for Solving the Problems] In order to solve the above-mentioned problems peculiar to the diagonal transport equipment, the present invention uses a common hoisting device to wind up and down the suspended load and to move the hoisting cart diagonally. At the bottom of the hoisting cart of the diagonal transport equipment,
A hook bar having a hooking part at the tip is vertically installed so as to be rotatable at least 90 degrees, and a box body that can be fitted into and detached from the tip of the hook bar is provided on the suspension beam of the hoisting truck, and the hook bar is installed vertically so as to be rotatable by at least 90 degrees. A safety device for preventing a fall of a diagonal conveyance equipment is configured such that the hook bar can be rotated to release the hook rod from the box body only in the up and down positions.

[Function] When the hoisting cart is moved diagonally, the hook bar of the hoisting cart is always hooked onto and fitted into the box body of the hanging beam to connect the hanging beam to the hoisting cart.
Thereby, the hoisting cart can be safely moved diagonally.

Only when hoisting and raising and lowering a suspended load, for example at the hoisting position or at the top of the furnace, the hook rod is rotated 90 degrees to release the connection with the box body. This allows the hoisting device to freely wind up and down the hanging beam and the hanging load.

Therefore, the suspension beam is locked to the hoisting truck while the hoisting truck is moving diagonally, and the hanging beam will not fall even in the unlikely event of an accident.

[Example] Hereinafter, an example of the present invention will be described based on the drawings.

Figures 1 to 9 show an embodiment of the present invention, in which 1 is a frame that extends diagonally from the position of the red-hot coke carrier to the top of the furnace, and 2 is a hoist placed on the frame 1. Dolly, 3 is wheels, 4 is hanging beam, 5,
6 is a sheep, 7 is a bucket, 8 is a hoisting device, and 9 is a wire rope, which has an elongated hole 10 on the top surface and wide holes 1 on the left and right sides of the hanging beam 4.
A box body 12 having 1 is provided.

A hook rod 14 having a hooking portion 13 having a thickness and length that can be inserted into the elongated hole 10 of the box body 12 and a length that can be inserted into the left and right wide holes 11 at the same time.
The box body 12 is placed at the bottom of the hoisting truck 2.
It is mounted vertically so that it is located above the camera and can be rotated at least 90 degrees.

As shown in FIG. 3, the hook rod 14 is thrust supported on the hoisting truck 2 by a thrust bearing 15.
It is biased upward by a coil spring 16.

A lever 17 is fixed to the upper end of the hook rod 14, a connecting rod 18 is connected to the lever 17 with a pin 19, the other end of the connecting rod 18 is connected to a lever 20 with a pin 21, and the lever 20 Then, the transfer rod 22 is connected in a direction substantially perpendicular to the connecting rod 18 to change the direction, and the other end of the transfer rod 22 is connected to the drive pin 24 attached to the frame 23 of the hoisting truck 2. be. The drive pin 24 is housed in a cylindrical casing 25 and biased by a coil spring 26 in a direction that projects outward from the side of the hoisting truck 2 .

When the drive pin 24 is pushed out by the coil spring 26, the transfer rod 2
2 pulls the lever 20, the connecting rod 18 pulled by the lever 20 pulls the lever 17, the hook bar 14 is rotated by the lever 17, and the hook part 13 at the tip of the hook bar 14 is attached to the box body 12. wide hole 11
The position is set so that it fits into the

A pin 27, which can also be used as a back-up for the centering device, is installed on the frame at the top of the furnace where the hoisting cart 2 stops and at the center of the fire truck rail.
The tip of each pin 27 is connected to the drive pin 24.
is pushed in to release the connection between the hook portion 13 of the hook bar 14 and the wide hole 11 of the box body 12.

In the figure, 29 is a bracket for supporting the lever 20;
30 is a spring seat, and 31 is a spring receiver.

In the case where the hanging beam 4 supporting the bucket cart 7 and the like is supported at two points in the above, two systems are provided as shown in FIG. 7 so that it can be operated from both sides of the hoisting cart 2.

Further, strikers 32 and 33 are attached to the lower outer periphery of the lever 17 at the upper end of the hook bar 14 at a required interval (approximately 90 mm
In addition, the brackets 34, 35, 36 provided near the upper end of the hook bar 14 of the hoisting truck 2,
A limit switch 37 for detecting the load, a limit switch 38 for detecting the closing of the hook bar, and a limit switch 39 for detecting the opening of the hook bar are provided, and the hook bar 14 is connected to the ninth
In the figure, when the limit switch 38 is closed, the striker 33 is in contact with the limit switch 38.
When the hook bar 14 is open, the limit switch 39 and the striker 33 come into contact with each other, turning on the limit switch 39 and shifting to the winding and up-down sequence. In this state, when the hanging beam 4 is lowered, the coil spring 26 is bent, and the hook bar 14 is lowered, the limit switch 37 and the striker 32 are activated.
When they come into contact with each other, the limit switch 37 is turned on and the lowering (or diagonal lowering) is stopped.

The fluid pressure cylinder 28 is installed from the frame side at the top of the furnace.
Insert the pin 27 into the casing 25 by
When the drive pin 24 is pushed in overcoming the elastic force of the coil spring 26, the transfer rod 22 pushes the lever 20, and the connecting rod 18 pushed by the lever 20 pushes the lever 17 to rotate the hook bar 14, causing the tip of the hook to be pulled. The hanging part 13 is the box body 12
is removed from the wide hole 11, and the connection between the hoisting truck 2 and the hanging beam 4 is released. At the same time, limit switch 39 and striker 33 for checking the opening and closing of the hook bar
When they come into contact with each other, the limit switch 39 is turned on and the sequence of winding up and down is started, making it possible to lower the hanging beam.

After putting the red hot coke into the furnace, hang beam 4
After winding up the hook part 13 of the hook bar 14 and fitting it into the elongated hole 10 of the box body 12, when the pin 27 is pulled out by the fluid pressure cylinder 28, the drive pin 24 is pushed outward by the restoring force of the coil spring 26. The transfer rod 12 protrudes and the lever 20
, the connecting rod 18 is pulled by the lever 20, the hook bar 14 is rotated approximately 90 degrees in the opposite direction, and the hook portion 13 of the hook bar 14 is attached to the box body 1.
It fits into the wide hole 11 of No. 2, and the hoisting cart 2 and the suspension beam 4 are connected. At the same time, the limit switch 38 for confirming opening/closing of the hook bar comes into contact with the striker 33, and the limit switch 38 is turned on, shifting to the diagonal movement sequence and allowing the hoisting carriage 2 to travel diagonally.

The hoisting device 8 causes the hoisting truck 2 to move obliquely along the frame 1 to the center of the fire truck rail. During this time, the hanging beam 4 is attached to the hoisting cart 2, the hook bar 14 and the box body 1.
2, so it will not fall even in the unlikely event of an accident. In the unlikely event that the hoisting truck 2 is obstructed by an obstacle and the hanging beam 4 starts lowering, the load of the hanging beam 4 will cause the hook bar 1 to
4 overcomes the elastic force of the coil spring 16 and descends, and the striker 32 turns on the limit switch 37, so that the diagonal descent is immediately stopped.

The operation at the center of the fire engine is similar to that at the top of the furnace. The hanging beam 4, which grips the bucket 7 carrying the red-hot coke, can be moved to the hoisting cart 2 by the hook rod 14 and the box body 12 even when going up diagonally.
Because it is connected to the furnace, it can be safely hoisted to the top of the furnace without falling.

The fall prevention safety device for diagonal conveyance equipment of the present invention is not limited to the above-mentioned embodiments, and is applicable not only to the hoisting device for coke buckets in CDQ, but also to the hoisting device for hoisting suspended loads. Of course, various modifications can be made without departing from the gist of the present invention, such as being widely applicable to diagonal conveyance equipment in which the upper truck is skewed by a common hoisting device.

[Effects of the invention] As explained above, according to the fall prevention safety device for oblique transport equipment of the present invention, the hoisting cart and the hanging beam are connected to a rotatable hook bar having a hook portion at the tip. Since the boxes are removably connected, the hanging beam can be locked while the hoisting cart is moving diagonally, and even in the unlikely event that the lifting beam falls while the hoisting cart is moving diagonally, it can be prevented. It can provide various excellent effects such as being useful as a safety device.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of one embodiment of the device of the present invention, FIG. 2 is an explanatory diagram of the hook bar and box body in FIG. 1, FIG. 3 is a detailed diagram of the hook bar in FIG. 1, and FIG.
The figure is a -direction arrow view of Fig. 3, Fig. 5 is a detailed explanatory diagram of the drive system of the hook bar in Fig. 1, Fig. 6 is a sectional view of the drive pin part in Fig. 5, and Fig. 7
The figure is an overall explanatory diagram of the drive system of the hook bar in Fig. 5, Fig. 8 is a view taken in the - direction arrow of Fig. 3, Fig. 9 is a view taken in the - direction arrow of Fig. 3, and Fig. 10 is a diagonal view. It is an explanatory view showing an example of type transportation equipment. 1 is the frame, 2 is the hoisting truck, 4 is the hanging beam, 8
is a hoisting device, 9 is a wire rope, 10 is a slotted hole,
11 is a wide hole, 12 is a box body, 13 is a hook part, 14 is a hook bar, 17 and 20 are levers, 18 is a connecting rod, 22 is a transfer rod, 24 is a drive pin, 26 is a coil spring, and 27 is a pin,
28 indicates a fluid pressure cylinder.

Claims (1)

[Scope of utility model registration request] At least 90 hook rods each having a hook at the tip are installed at the bottom of the hoisting truck of a diagonal type transportation equipment in which a common hoisting device is used to wind up and down the suspended load and to move the hoisting truck diagonally. A box body is provided on the suspension beam of the hoisting cart so that it can be rotated at the same time, and a box body that can be engaged with and detached from the tip of the hook rod is provided, and the box body is rotated only when the hoisting rod is in the upper and lower positions for winding the suspended load. 1. A fall prevention safety device for oblique transport equipment, characterized in that the device is configured to be able to be released from the body.