JPS6048434B2 - Automatic rotation stop device for hose reel in tank car - Google Patents

Description

Detailed Description of the Invention The present invention automatically stops excessive rotation of the reel when the hose is fed out from a hose reel (hereinafter referred to as a reel) mounted on a tank car, thereby preventing damage to the hose connection starting end. The present invention relates to a device for preventing.

In a tank truck equipped with a reel such as a vacuum truck, when winding a hose onto a reel, the rotation of the drive device is transmitted to the reel by clutch operation to wind the hose.
Further, when a hose wound on a reel is fed out, a worker normally rotates the reel (rotation in the opposite direction to the winding direction) by pulling the hose to feed out the hose. With such conventional reels, when the hose is fed out in a long length, continuous rotational force acts on the reel, accelerating the hose and causing the hose to reel beyond the intended length. There are cases where the hose is wound in the opposite direction to the normal winding direction on a reel that continues to rotate even after the hose is completely unwound. By the way, this type of hose has one end fixed to the top of the reel and is connected to a hose connection tube that faces tangent to the circumference in the hose winding direction, so the hose is protected from excessive rotation of the reel as described above. Therefore, when the hose is wound in the opposite direction, a force in the opposite direction acts on the connection start end of the hose to the hose connection pipe, resulting in damage or breakage of the hose connection start end.

Therefore, as a solution to the above problem, the worker operates a clutch on the drive device to press it against the reel, and then applies the drive device itself as a rotational load to the reel to stop the rotation, or alternatively, a protective tube is installed at the starting end of the hose connection. However, the former method requires a worker to stop the unnecessary excessive rotation of the reel, which poses workability problems and can also cause damage to the drive device. On the other hand, in the latter method, the flexibility of the hose deteriorates due to the fitting of the protective tube, and there are also problems in the durability of the protective tube.

In view of the above-mentioned points, the present invention reliably stops the rotation of the reel when the hose approaches the state where all the hose is unwound from the reel, prevents damage to the hose connection starting end, and provides a reel with high work efficiency. The purpose of the present invention is to provide an automatic rotation stopping device.

Next, the present invention will be explained with reference to an embodiment shown in the drawings.

In FIGS. 1 and 2, 1 is a tank placed horizontally on a vehicle chassis (not shown), and a reel 2 is rotatably mounted on the top surface of the tank 1. The reel 2 has a plurality of support arms 4 protruding from the inner peripheral surface of the shell cylinder 3 toward the center.
is supported via a bearing on a fixed connecting pipe installed on the top surface of the tank 1 (fixed connecting pipe and bearing are not shown).
A ring 7 is attached to a plurality of U-shaped frames 6 attached to the top surface of the rotating cylinder 5 and protruding outward from the inner peripheral surface of the shell cylinder 3.
and a wheel 8 having a friction surface formed on its outer circumferential surface. Reference numeral 9 is provided along the outer periphery of the reel 2, and is fixed to the top surface of the tank 1 as a cover having a hole 11 through which the hose 10 is inserted.

Reference numeral 12 designates a hose connection pipe, the base end of which is connected to the top surface of the rotary cylinder 5, and the tip connected to the outer circumferential surface of the shell cylinder 3 and connected to the hose 1.
It is formed in an L shape facing the circumferential tangent in the winding direction of 0,
The starting end of the hose 10 is connected.

The reel 2 having the above configuration is usually called a horizontal hose reel.

Reference numeral 13 designates a drive device for the reel 2, and its rotation is transmitted to the wheel body 8 of the reel 2 by clutch operation, thereby rotating the reel 2 in the winding direction of the hose 10 (clockwise rotation).

The reel 2 is provided with a device according to the present invention that automatically stops the above-mentioned excessive rotation of the reel.

The automatic stop device will be explained below.

In FIGS. 2 and 3, reference numeral 14 denotes a rotating shaft provided vertically parallel to the outer circumferential surface of the shell cylinder 3, and a rotating member of the reel 2 at least on the hose side of the hose connection starting end to the hose connection pipe 12 ( It is rotatably supported by bearings 15 which are vertically spaced apart and fixed to the outer peripheral surface of the shell tube 3 or the U-shaped frame 6). Both legs 16a of a U-shaped arm 16 are attached to the rotating shaft 14, and the legs 16a are sized to pass through the opening space of the U-shaped frame 6 of the reel 2. together with both legs 1
6a is formed into a curved surface along the outer peripheral surface of the shell cylinder 3.

Reference numeral 17 denotes a link whose one end is fixed to the top of the rotating shaft 14, and a spring 18 is stretched between the free end and the reel 2, and the spring 18 causes the U-shaped arm 16 to rotate clockwise. rotational force is applied.

Reference numeral 19 designates a stopper that comes into contact with the U-shaped arm 16, and is provided near the hose delivery window 11 on the inner peripheral surface of the cover 9.

Note that 20 is a guide roller for the hose 10 provided on the top surface of the tank 1.

Next, the operation of the automatic stop device having the above structure will be explained.

FIG. 1 shows a state in which the hose 10 is wound around the reel 2, and the hose 10 connected to the hose connection pipe 12 is wound around the outer peripheral surface of the shell tube 3 of the reel 2, and the hose 10 is wound around the hose insertion window 10 of the cover 9. It extends to the rear of the tank 1 via the guide roller 20, and its tip is locked to the tank 1 (not shown).

In this state, the U-shaped arm 16 is pressed against the outer circumferential surface of the shell tube 3 by the hose 10, the rotating shaft 14 and the link 17 rotate counterclockwise, and the hose 10 is held in a state where the spring 18 is stretched. and the shell tube 3.

As shown in FIG. 2, the hose 10 is unwound in a long length from the reel 2 which rotates counterclockwise due to the tensile force of the hose 10, and the hose 10 is unwound from the reel 2 as described above.
When the hose approaches a state where it is completely unwound, that is, when the tip of the hose connection pipe 12 that is rotating together with the reel 2 has almost finally rotated to a position near the front of the hose insertion window 11 of the cover 9, Since the hose 10 that was holding the U-shaped arm 16 against the outer peripheral surface of the shell tube 3 is unwound, the U-shaped arm 16 is moved together with the link 17 and the rotating shaft 14 by the restoring tension of the spring 18. It rotates clockwise and comes into contact with the inner peripheral surface of the cover 9.

Then, the U-shaped arm 16, which rotates with the subsequent rotation of the reel 2, slides on the inner peripheral surface of the cover 9 and comes into contact with a stopper 19 provided on the cover 9, and the rotation of the reel 2 is stopped. Therefore, the hose 10 will not be wound in the opposite direction.

On the other hand, when reeling the hose 10 from the state where the reel 2 has stopped rotating, when the reel 2 is rotated clockwise by the drive device 13, the U-shaped arm 16 is moved into the shell tube by the hose 10 being wound. Hose 1 is pressed against the outer peripheral surface of Hose 1.
0 passes over the arm body 16 and is wound around the shell tube 3. As described above, the present invention provides a mechanism that automatically stops the rotation of the reel between the rotating reel and the stationary cover when the hose is completely unwound from the reel. This prevents the hose from being wound in the opposite direction to the normal winding direction, which prevents damage to the starting end of the hose connection, improves work efficiency, and increases the durability of the reel. There are some that have the effect of moisturizing.

[Brief explanation of drawings]

FIG. 1 is a plan view of a hose reel equipped with an automatic stop device according to the present invention, and FIG. 2 is a perspective view showing the operating state of the device.
FIG. 3 is a sectional view of the main part of the device. 1... Tank, 2... Hose reel, 3... Shell tube, 4... Support arm, 5
・・・・・・Rotating tube, 6 ・・・・・・U-shaped frame, 9
...Cover, 10...Hose, 12.
...Hose connection pipe, 14 ... Rotating shaft, 1
6... U-shaped arm body, 17... Link,
18...Spring, 19...Stock
.

Claims (1)

[Claims] 1 In a horizontal type hose reel with a cover mounted on the top of the tank on the chassis, when the hose is wound up, the hose is pressed down, and when the hose is fed out, it slides against the inner circumferential surface of the cover near where all the hoses are fed out. A U-shaped arm that expands so as to touch the hose is pivoted to the hose reel rotation member at least on the hose side at the starting end of the hose connection, and a stopper that comes into contact with the U-shaped arm is inserted into the cover near the hose insertion window. An automatic rotation stop device for a hose reel in a tank car, characterized by being provided on the circumferential surface.