JPS6145889A - Winch device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to winching devices used on land and underwater.

[Conventional technology]

In recent years, cables for transmitting and receiving power and signals to underwater vehicles have been widely used in ocean development, seabed surveys, etc. This cable is usually wound around the drum of a winch, and the winding and unwinding of the cable is not conventional. This is done using only winch operations.

However, when winding and unwinding a cable with a winch, tension is not always applied to the cable, and since the twisted cable has rigidity, when the tension is removed, the cable loosens, causing the υ winding to occur by the barracks. It may become impossible to feed out.

[Problem that the invention seeks to solve]

The present invention was proposed in view of the above circumstances, and an object of the present invention is to provide a winch that constantly applies an appropriate tension to the cable during winding and unwinding, and prevents winding and unwinding due to so-called baracks. shall be.

[Means for solving problems]

To this end, the present invention provides a winch equipped with a cable shifter that moves the cable laterally in conjunction with the rotation of the drum. A rotating shaft that rotates relatively slowly and rotates relatively quickly when the cable is fed out, a friction roller that is slidably inserted into the rotating shaft in the rotational direction and axial direction and has a cable groove on the outer periphery, and a cable shifter. The present invention is characterized in that it includes a presser roller which is attached and has a cable groove on its outer periphery, is rotatably supported on the same vertical plane as the friction roller, and clamps the cable between it and the friction roller.

[For production]

With this configuration, it is possible to obtain a winch that prevents the cable from being unable to be wound or unwound due to so-called baraks by always applying an appropriate tension to the cable during winding and unwinding.

[Embodiment] An embodiment of the present invention will be explained with reference to the drawings. Fig. 1 is a plan view thereof, Fig. 2 shows the feeding sprocket of Fig. 1,
Fig. 6 is a partially enlarged cross-sectional view showing the mounting structure of the sprocket for frequent winding. Fig. 6 is a cross-sectional view taken along line G in Fig. 2, and Fig. 4 is a partially enlarged cross-sectional view taken along line IV-■ in Fig. 1. be.

In the above figure 6, 1 is a drive sprocket fitted to the left end of the shaft of the drum 5 being driven by the hydraulic motor 18, and 2 is a screw shaft supported on the frame 17 parallel to the drum 5. Three intermediate sprockets 3 and 4 of the same shape are respectively fitted on the left end of the drum 5, and comparative A small-diameter feeding sprocket and a relatively large-diameter take-up sprocket; 6 a cable shifter screwed onto the screw shaft 16; 7 a pair of left and right guides pivotally connected to the cable shifter 6 and facing each other with the cable 10 in between. A roller 8 is loosely pivoted at the bottom of the cable shifter 6 and is biased downward via a spring 14. A pressure roller with a cable groove 9 is slidable along the rotating shaft 13 in the rotational direction and the axial direction. The friction roller 9 is a friction roller with a cable groove fitted into the cable shifter 6, and the friction roller 9 is located directly below the presser roller 8 when the cable shifter 6 moves laterally.
In cooperation with the cable shifter 6, the cable 10 is moved horizontally in a state where the cable 10 is held between the upper and lower sides.

A spring 11 is inserted into a through hole drilled in the boss portion of the sprocket 3.4 in the radial direction, and urges the piston pawl 12 toward ratchet teeth carved on the outer periphery of the rotating shaft 13;
15 is a spring inserted between the cable shifter 6 and the friction roller 9, and 19 and 20 are chains hooked around sprockets.

In such a device, the feeding sprocket 3 and the winding sprocket 4 transmit power only in the forward direction and in the reverse direction by the action of the piston pawl 12 and ratchet teeth, respectively, as shown in FIGS. The direction is free.

That is, when the feeding sprocket 6 rotates in the feeding direction of the cable 10, it rotates integrally with the rotating shaft 16, but when rotating in the opposite direction, it idles on the rotating shaft 13 and winds up. When the sprocket 4 rotates in the winding direction of the cable 100, it rotates integrally with the rotation shaft 13, but when it rotates in the opposite direction, it idles on the rotation shaft 13.

In addition, at this time, the feeding sprocket 3 rotates at a relatively high rotation speed, and if the friction roller 9 is fixed to the rotating shaft 13, its circumferential speed will be slightly larger than the feeding speed of the cable 10. The ratio of the number of teeth of the sprocket 19 and the number of teeth of the sprocket B is selected as shown in FIG. The tooth ratio of the sprockets 19 and 4 is selected such that the winding speed of the cable 10 is slightly smaller than the winding speed of the cable 10.

Therefore, when the cable is paid out, when the hydraulic motor 18 is driven and the driving sprocket 1 and the drum 5 rotate in the feeding direction, the cable is transferred to the feeding sprocket 3 via the chain 19, the intermediate sprocket 2, and the chain 20. rotates at a relatively high rotational speed, and as a result, the friction roller 9
A slip occurs between the rotary shaft 13 and the rotating shaft 13, and the frictional force caused by this slip acts on the cable 10 as a tension, thereby preventing the cable from becoming loose.

In this case, the friction force is adjusted by means of springs 14.15.

Furthermore, when winding the cable, the rotating shaft 13 rotates at a relatively low rotational speed, and as a result, a slip occurs between the friction roller 9 and the rotating shaft 13, and the frictional force caused by this slipping causes tension on the cable. This prevents the cable from becoming loose.

According to such a device, the following effects can be achieved.

(1) Even if the cable has rigidity, it is possible to prevent the cable from becoming loose.

(2) Simple structure, small size and light weight.

(3) Can be used underwater.

(4) Since the entire structure is mechanically coupled, in a winch equipped with a cable shifter that moves the cable laterally in response to a failure, the winch is supported parallel to the drum shaft and is linked to the drum shaft to wind the cable. a rotating shaft that rotates relatively slowly when taking the cable and rotates relatively quickly when feeding the cable; a friction roller that is slidably inserted into the rotating shaft in the rotational direction and the axial direction and has a cable groove on the outer periphery;
The cable shifter is attached to the cable shifter and has a cable groove on its outer circumference. The present invention is industrially extremely useful because it provides a high-performance cable winch device that prevents cable looseness.

[Brief explanation of drawings]

Fig. 1 is a plan view showing one embodiment of the present invention, and Fig. 2 is a plan view showing an embodiment of the present invention.
Figure 6 is a partially enlarged cross-sectional view showing the mounting structure of the feeding sprocket and winding sprocket shown in Figure 2.
FIG. 4 is a partially enlarged sectional view taken along IV-IV in FIG. 1. DESCRIPTION OF SYMBOLS 1... Drive sprocket, 2... Intermediate sprocket, 3... Sprocket for feeding, 4... Sprocket for winding, 5... Drum, 6... Cable shifter, 7... Guide Roller, 8...presser foot o-7-1
9...Friction roller, 10...Cable, 11.
... Spring, 12 ... Piston pawl, 13 ... Rotating shaft,
14... Spring, 15... Spring, 16... Screw shaft,
17... Frame, 18... Hydraulic motor, 19...
Chain, 20...Chain. Sub-Agent Patent Attorney Masa Tsukamoto Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] In a winch equipped with a cable shifter that moves the cable laterally in conjunction with the rotation of the drum, the winch is supported parallel to the drum shaft and is linked to the drum shaft, and when winding the cable is compared. a rotating shaft that rotates relatively slowly when the cable is fed out and relatively fast when the cable is fed out; a friction roller that is slidably inserted into the rotating shaft in the rotational and axial directions and has a cable groove on its outer periphery; and a friction roller that is attached to the cable shifter. 1. A winch device comprising: a presser roller having a cable groove on its outer periphery, rotatably supported on the same vertical plane as the friction roller, and clamping a cable between the friction roller and the pressure roller.