JPH0711286Y2 - Drive device for cable with float - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention is applied to the cable drive of the inspection device when inserting the inspection device into the heat transfer tube of the steam generator. The present invention relates to an applicable floating cable drive device.

(Prior Art) Conventionally, the inspection device is inserted into the heat transfer tube by hydraulic pressure feeding, and the cable drive mechanism of the inspection device uses a pinch roller method or a sprocket method, so It has a structure in which a seal mechanism is additionally attached to the drive mechanism, which is not applicable to equipment that cannot use water, and the conventional mechanism cannot be used at all in the case of gas pressure feeding instead.

(Problems to be solved by the invention) In the conventional cable drive device, it is necessary to attach a seal portion separately from the drive mechanism, and it is difficult to seal the cable with a float, and the device becomes large. However, there is a problem that it cannot be applied to equipment that cannot use water because it cannot seal a thin fluid such as gas.

The present invention was developed to address the above-mentioned problems, and the purpose thereof is to simplify the mechanism,
It is an object of the present invention to provide a drive device for a cable with a float, which has improved sealing performance and cable drive performance as well as compactness.

(Means for Solving the Problem) The present invention is directed to a disk-shaped rotary plate that is rotationally driven, and an annular hollow elastic member that is arranged along the outer periphery of the rotary plate and that houses and seals a cable with a float. Body, an opening / closing groove provided along the outer peripheral portion of the hollow elastic body, a closing guide that is in contact with the outside of the cable housing portion of the hollow elastic body, a cable insertion / removal portion of the hollow elastic body, and It is characterized in that it is provided with an opening / sealing guide protrudingly provided in the opening / closing groove of the cable non-accommodating portion, and by the closing guide as the hollow elastic body arranged along the outer peripheral portion of the rotating plate rotates. The hollow elastic body is closed and sealed in the cable housing section, and the cable with float is housed, sealed and driven.The opening / sealing guide opens the open / close groove on the outer circumference of the hollow elastic body in the cable entry / exit section, and the cable with float When entering and leaving Both seal the open / close groove of the cable non-accommodating portion.

(Operation) The hollow elastic body is rotated together with the rotating body via the drive shaft,
The area of the hollow elastic cable housing part is closed and sealed by the closing guide, and the cable with float is housed, sealed and driven, and the opening / sealing guide opens the cable entry / exit part of the hollow elastic body, and The attached cable goes in and out of the hollow elastic body, and the cable non-accommodating part of the hollow elastic body is sealed by the opening / sealing guide, and the sealing mechanism consisting of the closing guide and the opening / sealing guide is compact in combination with the accommodation and sealing performance of the hollow elastic body. It has an excellent sealing function and can smoothly drive the floated cable.

(Embodiment) An embodiment of the present invention is shown in FIGS. 1 to 5, in which (1) is an upper and lower housing (10a) (10a) on a frame (10c).
b) A disk-shaped rotary plate which is arranged in the drive shaft (2) and is fitted to the drive shaft (2) and is driven to rotate in the forward and reverse directions. (3) is the rotary plate (1) mounted via the drive shaft (2). A rotating drive device, which houses and seals a disk-shaped rotating plate (1) that is driven to rotate and a cable (20) with a float (20a) arranged along the outer periphery of the rotating plate (1). The annular hollow elastic bodies (5a, b, c) that are driven and driven, the opening / closing groove (6) provided along the outer periphery of the hollow elastic bodies (5a, b, c), and the hollow elastic body (5a, b, c) the closing guides (7a, b, c) facing each other along the outside of the cable housing (A), and the cable entry / exit (B) (B) of the hollow elastic body (5a, b, c). ) And an opening / sealing guide (8a, b) projectingly provided in the opening / closing groove (6) of the cable non-accommodating portion (C).

The disc-shaped rotary plate (1) is provided with upper and lower housings (10).
a) Fitted and fixed to a drive shaft (2) vertically rotatably provided in upper and lower bearing parts (11a) and (11b) in (10b), and driven by drive device (3). It is rotationally driven in the forward and reverse directions via.

The annular hollow elastic body (5a, b, c) is an inner holder (5c) with an outer peripheral circular groove arranged along the outer periphery of the rotating plate (1), and an inner holder (5c). As shown in the figure, it is composed of upper and lower holders (5a) and (5b) protruding outward from the lower side, and upper and lower holders (5a) and (5b) above and below the inner holder (5c). ) Is attached with disc-shaped gripping metal fittings (5'a) (5'b), bolts, etc., and at least the upper and lower holders (5a) (5b) are elastic bodies such as synthetic rubber. An opening / closing groove (6) extending over the entire length in the circumferential direction is formed between the inner surfaces of the outer peripheral portion, and has a hollow portion for accommodating and sealing the cable (20) with the float (20a) together with the inner holder (5c) and driving the whole. It has an annular shape and is formed in the cable housing portion (A), the cable entry / exit portions (B) and (B), and the cable non-housing portion (C) as shown in FIG.

The closing guides (7a, b, c) are upper and lower housings (1a)
Upper and lower holders (5a) that are installed on the inner surface side of (1b) with bolts
The bearing retainers (7a) and (7b) that face each other along the upper and lower surfaces of (5b), and the upper and lower support members (7d) disposed on the inner surfaces of the upper and lower housings (1a) and (1b). ) (7e) and the upper and lower housings (1a) and (1b) are supported by the outer supporting member (7f), which is composed of a group of claw-shaped rollers (7c). The bearing retainers (7a) and (7b) are circumferentially arranged. Upper and lower retainers (5
a) A pressing member (7 ') arranged on the upper and lower surfaces of (5b)
a) (7'b), and in the area of the cable housing (A), the upper and lower holders (5a) (5b) are pressed from above and below to close the opening / closing groove (6), (B) Guide the open / close groove (6) in the open position in the areas of (B) and the cable non-accommodating portion (C), and the aforesaid twisted roller (7c)
The group is brought into contact with the outside of the area of the cable housing (A) and guides the opening / closing groove (6) to the closed position.

The opening / seal guide (8a, b) is provided with an oblique guide portion (8a) (8a) that gradually protrudes from the outside of the opening / closing groove (6) to the inside of the cable entry / exit portion (B) (B) and the cable non-insertion portion. In the accommodating part (C), the seal guide part (8b) is projected from the outside of the opening / closing groove (6) to the upper part and the central part of the lower holding parts (5a) and (5b) in a filling shape, and the oblique guide part (8a)
Is the opening / closing groove (6) of the cable entry / exit (B) (B) to form the entry / exit hole (8c) of the cable (20) with the float (20a), and the seal guide (8b) is the cable It is arranged and sealed in the open / close groove (6) opened in the region of the non-accommodating portion (C). The outer surface of each sliding portion of the opening / seal guide (8a, b) is made of Teflon or the like to have a low friction coefficient.

Furthermore, in the upper and lower housings (10a) (10b), the floats (20a) that come in and out from both openings of the opening / closing groove (6) provided in the cable entry / exit portions (B) and (B) and the entry / exit hole portion (8c). ) With a cable-equipped cable (20), a flanged nozzle (21a) (21b) for cable entry / exit is provided so as to project from the nozzle (21a) (2).
Guide pipes (22a) (22b) with upper and lower cutouts are interposed between both inner ends of 1b) and the above-mentioned inlet / outlet hole portions.

As shown in FIGS. 4, 5 and 6, the rotary plate (1), the hollow elastic body (5a, 5a,
b, c), the guide pipes (22a) (22b) are housed and isolated from the outside, and the connecting pipes, cable winders (not shown), etc. are provided at the outer ends of the flanged nozzles (21a) (21b). Are connected and connected.

The embodiment of the present invention is configured as described above, and the operation will be described in detail. The hollow elastic body (5a, 5a, 5a,
b, c) are driven to rotate in the forward and reverse directions, and the hollow elastic body (5a, b,
In the area of the cable accommodating portion (A), c) is guided by the bearing retainers (7a) and (7b) of the closing guides (7a, b, c) from the upper and lower sides, and the claw-shaped rollers (7c). The outer peripheral surface is guided by the group, and the float (20a)
The attached cable (20) is housed, sealed, and driven, and the opening / closing groove (6) is opened by the oblique guide portion (8a) of the opening / sealing guide (8a, b) in the cable entry / exit portion (B) (B). The cable (20) with the float (20a) is moved in and out from the hollow elastic body (5a, b, c), and in the area of the cable non-accommodating portion (C), the opening / closing groove (6) in which the seal guide portion (8b) is opened. ) Inside and seal.

For example, when the rotary plate (1) is rotated counterclockwise in FIG. 2, the cable (20) with the float (20a) is connected to the nozzle (21a).
Inside, through the guide pipe (22a), into the hollow elastic body (5a, b, c) from the opening of the opening / closing groove (6) formed in the cable entry / exit portion (B), and into the cable accommodating portion (A). In the area, it is driven by being isolated and sealed from the outside, comes out from the opening portion of the opening / closing groove (6) of the cable entry / exit portion (B) on the left side of the drawing, and is sent out through the guide pipe (22b) and the nozzle (21b). Even when the rotary plate (1) is rotated clockwise in the figure, the float (20
The cable (20) with a) is similarly driven in the opposite direction.

Closure guide (7a, b, c) and opening and seal guide (8a,
b, c) allows the hollow elastic body (5a, b, c) to rotate and guides it, and the bearing retainer (7a) of the closing guide (7a, b, c)
(7b) is the upper and lower retainers (5a) of the hollow elastic body (5a, b, c)
(5b) Hold the upper and lower surface side over the entire length, and keep the open / close groove (6) closed in the area of the cable housing (A).
The cable housing portions (B) and (B) allow the opening / closing groove (6) to open, and the cable non-housing portion (C) guides the opening / closing groove (6) at the open position. Also, the occlusion guide (7a,
b), c) the group of spiral rollers (7c) guides the outer peripheral surface side of the hollow elastic body (5a, b, c) in the area of the cable housing (A) to close the opening / closing groove (6), Opening and sealing guide (8
The diagonal guides (8a) (a, b, c) are the cable entry and exit (B)
In (B), an opening is formed in the opening / closing groove (6) and the vicinity thereof is sealed, and the seal guide portion (8b) of the opening / sealing guide (8a, b, c) is a region of the cable non-accommodating portion (C). Has a function of sealing by being positioned in the opening / closing groove (6) opened in the above, and the closing guides (7a, b, c) and the opening / sealing guides (8a, b, c) are hollow elastic bodies (5a). , b, c) are effectively and compactly arranged around and inside, and have excellent cable entry and exit performance and sealing function, and the hollow elastic body (5a,
The cable (20) with the float (20a) is smoothly driven in combination with the accommodation, sealing and drive performance of the cable (20) with the float (20a) by b, c).

(Effects of the Invention) The present invention has the above-described structure, and the circular hollow elastic body arranged along the outer peripheral portion of the rotary disk is driven to rotate by the rotary disk, and the hollow elastic body is rotated. A cable with a float is housed in the hollow elastic cable housing part by a closing guide that faces the cable housing part of the body, is sealed and driven, and an opening / sealing guide opens and closes the cable housing part of the hollow elastic body. Since the groove is opened and the opening / closing groove of the cable non-accommodating portion is sealed, the cable with the float can be smoothly inserted into and removed from the hollow elastic body, and the closing guide and the opening / sealing guide can be made compact in the vicinity of the hollow elastic body. It has an excellent cable entry / exit function and a sealing function, and the driving performance of the cable with buoyancy is combined with the accommodation, sealing and driving function of the cable with the float by the hollow elastic body. Has been significantly improved.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, FIG. 2 is a plan view showing a partial cross section of FIG. 1, FIG. 3 is a developed sectional view of the right half portion of FIG. FIG. 4 is a front view of FIG. 2, and FIGS. 5 (A) and 5 (B) are a side view and a plan view showing the entire external structure. 1: Rotating plate, 5a, b, c: Hollow elastic body 6: Opening / closing groove, 7a, b, c: Closure guide 8a, b: Opening and sealing guide section A: Cable storage section, B: Cable entry / exit section C: Cable Non-house

Claims (1)

[Scope of utility model registration request] 1. A disk-shaped rotary plate which is rotationally driven, an annular hollow elastic body which is arranged along the outer peripheral portion of the rotary plate and accommodates and seals a cable with a floating member, and a hollow elastic body of the hollow elastic body. An opening / closing groove provided along the outer peripheral portion, and a closing guide that is opposed to the outside of the cable housing portion of the hollow elastic body,
A drive device for a cable with a float, comprising: an opening / sealing guide projecting in the opening / closing groove of the cable entry / exit portion and the cable non-accommodating portion of the hollow elastic body.