JPS591677B2 - Tension device by pulling wires together - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tensioning device for a winch used on a ship by pulling together wires.

When the wires of various ship winches are under load, the winding wires of the winch are wound in an orderly and neat line while maintaining tension due to the wires being pulled together, but when there is no load on the wires, When this happens, the wires become loose and unravel, causing the wires to get caught together or bent, making them difficult to use.

The present invention eliminates the above-mentioned drawbacks, and is characterized by using the winch wire in a tensioned state by forcibly pulling it together at all times. It is intended to be used again.

Describing an embodiment, FIG. 1 is a side sectional view of the present invention, and FIG. 2 is a front view (partial sectional view).

An oscillating bearing boss 2 is provided on the upper side of side plates 1 and 11 bent in a U-shape and provided in parallel, and is rotatably attached to an oscillating pedestal 4° 4' by a shaft 3.

A hydraulic motor 5 for driving is attached to the center of the side plate 11 on the back side with a mounting screw 6, and an extension shaft 9 is provided at the center of the main body 8 of the crimping pulley 7, which is fixed to the hydraulic motor shaft q and rotated, and further has an extension shaft 9 for sliding. A slide cylinder 8' having a hole 8'' is added.

A ring-shaped slide pressure bonding plate 1 fitted into the slide tube 8'
0, a spring receiving part 11' and a connecting part 11'',
A pressing plate 11 having a sliding hole 8'' is connected to the holding plate 11 through the sliding hole 8'', so that the sliding pressure bonding plate 10 can be slid in the direction of arrow a-a' by sliding the pressing plate 11.

The coil spring 12 inserted into the extension shaft 9 is applied to the holding plate 11, and the spring seat 13 is fitted onto the extension shaft 9 to hold down the coil spring 12.
The tightening screw 15 is screwed into the screw 14' of the side plate cover 14 attached to the center of the slide crimping plate 10, and the slide crimping plate 10 can be crimped onto the crimping pulley body 8' via the spring seat 13, coil spring 12, and presser plate 11. A stopper 16 is attached to the tip of the extension shaft 9 to prevent the tightening screw 15 from coming off.

A bearing bush 17 of the extension shaft 9 is attached to the tightening screw 15, and a bundle 15' is provided to facilitate tightening.

Note that a bearing bushing 17' is also attached to the side plate 1t on the back side.

When the tightening screw 15 of the tensioning device 20 for the oscillating pulley is loosened, the slide pressure bonding plate 10 moves in the direction of the arrow a/, and the grooved clamping surfaces 21, 21' facing the husband open.

The wire 22 is connected to the auxiliary rollers 18, 18' and the pressure pulley 7.
When the wire 22 is inserted into the groove clamping surfaces 21 and 21' of the crimping pulley 7 and the tightening screw 15 is tightened, the wire 22 will move as shown by the arrow a.
It is crimped and clamped.

The strength of the crimping force is determined by the state of the wire 22 (new wire,
The tension screw 15 can be adjusted to a strength that can maintain the clamping tension when the wire runs out of oil, or when the exhibit wire is partially flattened or bent, for example.

When the hydraulic motor 5 of the tensioning device 20 is rotated in the direction indicated by the arrow C or torque is applied to the direction indicated by the arrow C, the wire 22 moves in the direction indicated by the arrow C.
-c' maintains a tensioned state by pulling together, always adapts to winding and unwinding of the winch without loosening, and is characterized by being configured so that the wire is wound in an orderly and neat manner.

FIG. 3 is a side view showing the second embodiment.

In place of the oscillating bearing boss 2 of the side plates 1 and 1r, a swivel shaft 26 is provided in which the upper side of the side plate is bent into a U-shape, a reinforcing material 23 is welded, a swivel shaft hole 24 is provided in the center, and a metal ring 25 is provided.
is inserted into the swivel shaft hole 24, a stopper 27 is welded to the tip of the swivel shaft, and the tensioning device 20' is inserted in the direction of the arrow d-d'.
It is characterized by being configured to be rotatable.

Others are the same as above. The present invention is used for the tip pulley 28 for cargo handling, but in this case, the oscillating pulley 29
Use normal ones.

Of course, it can also be conveniently used for other purposes.

(See FIG. 5) FIG. 4 is a diagram showing an example of a hydraulic circuit used in the present invention.

From the A port of the hydraulic switching valve 30 connected to the inboard hydraulic power source P and the tank side T to the port of the hydraulic motor 5 of the tensioning device 20, the same <81 port to the port of the hydraulic motor 32 of the winch 31. Piping is connected in series from the B2 port to the B port of the hydraulic switching valve 30 via the counterbalance valve 33, and the pilot circuit (indicated by a dotted line) of the counterbalance valve 33 is connected to the port.

Further, a sequence valve 34 with a check valve seal is connected and piped between the A1 port and the B1 port of the hydraulic motor 5 of the tensioning device 20.

Now, connect the wire 22 of the winch drum 31' to the tensioning device 2.
When the hydraulic switching valve 30 is switched to the hoisting direction (B port side), the hydraulic motor 32 of the winch passes through the check valve of the counterbalance valve 33.
is driven to rotate in the direction of arrow e, flows through the check valve of the sequence valve 34 from the A boat to the T port of the hydraulic switching valve 30, and the winch is hoisted.

At this time, the crimping pulley 7 is pulled by the wire 22 and rotates in the opposite direction (arrow f'0), the hydraulic motor 5 performs a pumping action, and the amount of oil from the port is diverted to the hydraulic switching valve. The wire 22 flows to the A boat, but due to the resistance of the hydraulic motor 5 (tensile force of about 20 to 7 to 30 @), the wire 22 moves toward the arrow C-
It is pulled together by C' and rolled up neatly and in an orderly manner.

(If the tensile force is insufficient, connect the sequence valve 34' between A3.AI) When the hydraulic switching valve 30 is set to neutral, the winch drum 31' stops, and the crimping pulley 7 also clamps the wire 22 and pulls it. The wire will not come loose as it will stop in the correct position.

Next, when switching to the lowering direction (A port side), the sequence valve 34 is activated and the (set pressure 10 to IFJq/crit)
A1 of the hydraulic motor 5 by this differential pressure.
Hydraulic pressure is applied to the hoard, and at the same time the hydraulic motor 5 is rotated once in the direction of arrow f, the amount of oil is reduced to the hydraulic motor 3 of the winch.
As the hydraulic pressure builds up, the pilot circuit (dotted line) of the counterbalance valve 33 operates, and the hydraulic motor 32 rotates in the direction of arrow e' while being controlled by the flow rate of the counterbalance valve 33. winch drum 3
The wire 22 extends from 1' in the direction of arrow C, and as a result of this, the crimping pulley 7 rotates (arrow f) and is wound down while maintaining the tensioned state (arrow C), thereby maintaining the tension state. It is characterized by:

FIG. 5 is an explanatory diagram showing an example of use of the present invention.

Conventionally, when there is no load on the hook 36 of the derrick 35, the wire 22 of the winch loosens due to the weight of the wire and becomes in the state shown by the chain line, and the hoisting wire 22 of the winch 31 is sagging and the winch 31 is moved in the hoisting direction (arrow). When rotated to e), the winch wire 22 becomes loose.

A tensioning device 2 is installed by pulling wires together on the oscillating pulley 29 or the tip pulley 28 (swivel type) for cargo handling of the derrick.
If you equip 0 or 20' and keep it in tension, arrow c
--c', and the wire 22 is used in the state shown by the solid line.

The present invention prevents the winding of the winch wire, allows it to be used under tension at all times, and has the feature that winding and unwinding can be done in an orderly and neat manner without worrying about the wire winding up in pieces, thereby improving work efficiency. This contributes to the improvement of

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of the present invention. Figure 2 is a front view (partial sectional view). FIG. 3 is a side view showing the second embodiment. FIG. 4 is a diagram showing an example of a hydraulic circuit used in the present invention. FIG. 5 is an explanatory diagram showing an example of use of the present invention. 1...
Side plate, 2... Swing bearing boss, 3... Shaft, 4... Swing pedestal, 5... Hydraulic motor, 6...・Mounting screw, 7...Crimp pulley, 8...Body of crimping pulley, 8'...Slide tube, 8"...Sliding hole, 9. ...Extension shaft, 10...Slide crimp plate, 11...
・Press plate, 11'...Spring receiver, 11"
...Connection part, 12... Spring, 1
3...Spring seat, 14...Side plate cover, 15...Tightening screw, 16...Stopper, 17...Extension shaft Bearing bushing, 1
8...Auxiliary roller, 19...Shaft, 2
0...Tension device for oscillating pulley, 21...:...
・Groove clamping surface, 22...Wire, 23...
... Reinforcement material, 24 ... Swivel shaft element L25.
...rational, 26...swivel axis, 27.
... Stopper, 28 ... Tip pulley for cargo handling, 29 ... Oscillating pulley, 30 ... Hydraulic switching valve, 31 ... Winch, 32...
Hydraulic motor, 33...Counter balance valve, 34...Sequence valve, 35...Derrick, 36...Hook.

Claims (1)

[Scope of Claims] 1. In a tensioning device having a swinging mechanism on the upper side of side plates provided in parallel, the tensioning device is driven and rotated by a hydraulic motor attached to the center of the back side plate, and an extension shaft is provided in the center, A ring-shaped slide crimping plate is fitted into the slide tube of the crimping pulley, which has a slide tube having a sliding hole attached to the outside of the extension shaft, and a holding plate is slidably attached to the extension shaft of the crimping pulley. The slide crimping plate and the holding plate are connected through the sliding hole, a coil spring is inserted, and the sliding crimping plate can be variably crimped to the crimping pulley through the coil spring and the holding plate using the tightening screw provided on the front side plate. A tensioning device for pulling wires together, which is provided in a crimping pulley and a slide crimping plate so that the wire can be held and rotated. 2. Tensioning by pulling wires together as set forth in claim 1, characterized in that a swivel mechanism having a metal ring is attached to the upper side of the parallel side plate so as to be rotatable so that the wire can be suspended. Device.