JPH01260774A - Brushless signal transfer device for cable winding machine - Google Patents

Abstract

PURPOSE:To prevent noise from being generated due to variation of electric resistance by providing shift mechanism. CONSTITUTION:One shift mechanism comprises a rotary screw shaft 9 for reciprocal transfer having a gear 8 which engages with a gear 7 integral with a rotary drum 4 and a guide reel 10 having a female screw 10a into which the rotary screw shaft 9 is screwed to reciprocally transfer the female screw 10a. In the other shift mechanism, with rotation of a cable drum 1, a screw shaft 21 turns around a fixed drum 23 with a housing 16 through gears 18 and 19. While the cable drum 1 is rotating, between the rotary drum 4 integral with the cable drum 1 and the fixed drum 23 attached to a fixed portion 24 which supports the cable drum 1, a conductor 3 for signal transfer whose one end is connected to a cable 2 is transferred from one of the drums to the other around which the cable 2 is wound through guide means 10 to 17. In this procedure, the conductor 3 is tightly wound around the other drum many times in order. Noise is thus prevented from being generated due to rotation.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention provides a cable winding machine with a fixed part that rotatably supports the cable wound around the cable drum and the drum while the cable drum is rotating. The present invention relates to a device for transmitting signals between cables, and more particularly to a brushless signal transmitting device for a cable hoist, which eliminates the need for conventional electrical connections using brushes.

[Conventional technology]

As signal transmission devices in conventional cable hoisting machines, there are those shown in FIG. 3 (longitudinal sectional view) and FIG. 4 (IV-mV sectional view in FIG. 3). Ring 32. Terminal 33. Cable 34° terminal 35. Bearing 36
．． Bearing 37. Cable 38° Hollow shaft 39. Brush fixing fitting 40. The bearing housing 41 includes a bearing housing 41 and a casing 42.

Then, the casing 42 is rotated by an external force, and together with the casing 42, the brush fixing fitting 40 and the brush 31 are rotated.
rotates.

The brush 31 always rotates in contact with the ring 32, and the hollow shaft 39 is always fixed and does not rotate.

Next, explaining the flow of current as a signal, the current input from the terminal 33 flows to the brush 31. Brush 31
Since the brush 31 is in contact with the ring 32, current flows from the brush 31 to the ring 32. Since the ring 32 and the terminal 35 are connected via the cable 3B, current flows from the ring 32 to the terminal 35.

In this way, from the conductor rotating with the drum,
Conventionally, a brushed slip ring is used to send a signal current to the conductor on the fixed part side. This is done by connecting the conductor to terminal 33 and terminal 3 without brushing the cable.
This is because if the conductor wires are connected with 5, the conductive wires will be twisted and broken.

[Problem to be solved by the invention]

By the way, in the conventional signal transmission device for a cable hoist as described above, since the brush 31 and the ring 32 that slide against each other are present between the rotating conductor and the fixed conductor, However, there is a problem in that it is affected by noise due to contact resistance.

That is, since the brush 31 and the ring 32 are sliding while contacting each other, the electrical resistance changes, which causes noise.

The present invention aims to solve these problems, and eliminates the TM movement mechanism between the brush and ring to prevent the change in electrical resistance that occurs in the conventional case, thereby reducing noise. It is an object of the present invention to provide a brushless signal transmission device for a cable hoisting machine that is not affected by this.

[Means to solve the problem]

Therefore, the brushless signal transmission device for a cable hoisting machine of the present invention includes a rotating drum that rotates together with the cable drum on the central axis of the cable drum of the cable hoisting machine;
a fixed drum attached to a fixed part that rotatably supports the cable drum, and a signal transmission conductor whose one end is connected to the cable in the cable drum,
A shifter mechanism that is guided to the fixed drum through a guide means and wound around the fixed drum, and that winds the conducting wire orderly from one of the rotating drum and the fixed drum to the other as the cable drum rotates; It is characterized in that it is provided in the guide means.

[For production]

In the above-described brushless signal transmission device for a cable hoisting machine of the present invention, when the cable drum rotates, the signal transmission conductor whose one end is connected to the cable supports the rotating drum integrated with the cable drum and the cable drum. Between the fixed drum on the fixed part side, the winding is transferred from one of the two drums to the other via a guide means.

Then, the conducting wire is wound neatly and tightly in a multilayered manner by the shifter mechanism in the guide means.

In this way, the transmission of signals from the cable drum side to the fixed part side through the conductive wire can be reliably carried out without causing a change in electrical resistance due to the conventional sliding of the brush.

C Embodiment] Hereinafter, a brushless signal transmission device for a cable hoisting machine as an embodiment of the present invention will be explained with reference to the drawings. FIG. 1 is a longitudinal sectional view thereof, and FIG. It is an arrow sectional view.

As shown in Fig. 1.2, a rotary drum 4 is provided on the central axis A of the cable drum 1 of the cable hoist, which rotates together with the cable drum 1, and allows the cable drum l to rotate. The stationary drum 23 attached to the stationary part 24 that is supported by the stationary drum 23 is also provided on the central axis A.

A signal transmission conductor 3 connected at one end to the cable 2 in the cable drum 1 is guided to the fixed drum 23 via the guide means B and is wound around the fixed drum 23.

The guide means B includes an arm 6 integral with a fixed shaft 5 along the central axis A.
The housing 16 is formed in a cylindrical shape and has a bearing. 20, it is rotatably supported inside the cable drum 1.

Further, a helical spring 22 is interposed between the housing 16 and the inner wall of the cable drum 1.

The guide means B further includes a shifter mechanism 48 for the rotating drum 4 and a shifter mechanism 23 for the fixed drum 23.
These shifter mechanisms 4S, 23S
Accordingly, as the cable drum 1 rotates, the rotating drum 4
Also, the conductive wire 3 can be wound in an orderly manner from one side of the fixed drum 23 to the other.

That is, the shifter mechanism 4S includes a reciprocating rotary screw shaft 9 having a gear 8 that meshes with a gear 7 integrated with the rotary drum 4, and a female screw member 1 that is screwed onto the screw shaft 9 and reciprocates.
The guide reel 10 is provided with a guide reel 10, and the conducting wire 3 is guided by the guide reel 10.

The shifter mechanism 23S also includes a reciprocating rotary screw shaft 21 having a gear 1B that meshes with a gear 19 integrated with the fixed drum 23, and a guide unit with a female screw member 17a that is screwed onto the screw shaft 21 and reciprocates. The guide reel 17 guides the conducting wire 3.

Since this brushless signal transmission device for a cable hoist is configured as described above, when the cable drum l rotates, the signal transmission conductor 3 connected at one end to the cable 2 in the cable drum l is connected to the cable drum l
Between the rotary drum 4, which is integrated with the rotary drum 4, and the fixed drum 23 on the fixed part 4 side, the winding is carried out from one of the two drums 4.23 to the other via the guide means B.

Then, the conducting wire 3 is wound neatly and tightly in a multilayered manner on the drum 4 or 23 by the shifter mechanisms 4S and 23S in the guide means B. For example, when the cable drum l rotates in the direction of arrow R in FIG. 1, the rotating drum 4 also rotates in the same direction, so the shifter mechanism 4
At step 5, the screw shaft 9 is driven to rotate through the gear 7.8, and the guide reel 10 moves from side to side to sequentially unwind the conducting wire 3 from the rotary drum 4.

In the other shifter mechanism 233, as the cable drum 1 rotates, the screw shaft 21 moves together with the housing 16.
rotates around the fixed drum 23, while the gear 18.1
Since the guide reel 17 rotates on its own axis via the reel 9, the guide reel 17 moves left and right, and is unwound from the rotary drum 4, and each reel 10
, 11, 12° 14. The conductor 3 guided through 15
are tightly wound in a multi-layered manner on the fixed drum 23.

By the way, assuming that the rotating drum 4 and the fixed drum 23 have the same diameter, for example, when the fifth layer of the conducting wire 3 on the rotating drum 4 is unraveled, the conducting wire 3 on the fixed drum 23 If the conductive wire 3 is wound in the first layer, the conductive wire 3 will become slack. This is because the length of the wire that is unwound and fed out is different from the length of the wire that is wound up.

Therefore, in this device, as shown in FIG. 2, the helical spring 22 is connected at one end to the cable drum 1 and at the other end to the housing 16. The rotation speed is set to be higher than that of the

The rotation direction of the cable drum 1 is the rotation direction R shown in FIG.
Even in the opposite case, the number of rotations of the housing 16 is greater than the number of rotations of the cable drum l in the opposite direction.

Due to this action, electrical signals input from the cable 2 rotating together with the cable drum 1 are transferred to the conductor 3.
It can be transmitted to the fixing part 24 side without any trouble through.

〔Effect of the invention〕

As detailed above, according to the brushless signal transmission device for a cable hoisting machine of the present invention, the following effects and advantages can be obtained.

(+) An action that causes the signal transmission conductor connected to the cable on the cable drum to be wound between the rotary drum and the fixed drum along the central axis of the cable drum as the cable drum rotates. Therefore, it is possible to prevent the generation of noise during rotation, which has been a problem in the case of the conventional slip ring system.

(2) By arranging the rotating drum and the stationary drum along the same central axis, the space required for them can be minimized, and the entire apparatus can be made compact.

(3) Since the winding and unwinding of the conducting wire on the rotating drum and the fixed drum are performed via the shifter mechanism, the effect of winding the conducting wire in multiple layers and in close alignment can be obtained.

[Brief explanation of the drawing]

Fig. 1.2 shows a brushless signal transmission device for a cable hoisting machine as an embodiment of the present invention, Fig. 1 is a longitudinal sectional view thereof, and Fig. 2 is a view taken from the A cross-sectional view,
Fig. 3.4 shows a conventional signal transmission device for a cable hoisting machine, Fig. 3 is a longitudinal sectional view thereof, and Fig. 4 is a
It is a sectional view taken along the line V-IV. 1... Cable drum, 2... Cable, 3... Signal transmission conductor, 4... Rotating drum, 4S... Shifter mechanism, 5
...Fixed shaft, 6.. Arm, 7.8.. Gear, 9.. Screw shaft for reciprocating movement, 10.. Guide reel, 10a.. Female thread member, 11.12.. Direction conversion reel, 13.. arm, 14
...Direction change Reno tweet 15...Guidance reel, 16...
Housing, 17...Guide liner 17a...Female screw member, 18.19...Gear, 20...Bearing, 21...Screw shaft for reciprocating movement, 22...Trail spring, 23...Fixed drum, 23S... - Shifter mechanism, 24... fixed part. Agent Patent Attorney Yoshihiko Iinuma Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] A rotating drum that rotates together with the cable drum and a fixed drum attached to a fixed part that rotatably supports the cable drum are provided on the central axis of the cable drum of the cable hoist, A signal transmission conductor connected at one end to the cable is guided to the fixed drum through a guide means and wound around the fixed drum, and as the cable drum rotates, one of the rotating drum and the fixed drum is connected. A brushless signal transmission device for a cable hoist, characterized in that the guide means is provided with a shifter mechanism for orderly winding the conducting wire from one to the other.