JPS58164482A - Inspection vehicle for interior of reactor container - Google Patents

Abstract

PURPOSE:To prevent a power supply cable from making contact with a crawlers, by supporting the cable by a cable-supporting device. CONSTITUTION:The power supply cables 8, 8a connected to a base frame 1 through a space between the crawlers 2, 2 is supported by the cable-supporting device 7 located correspondingly to end parts of the crawlers 2, 2, so that they do not contact the crawlers 2, 2 even when turning the inspection vehicle or swinging-up the crawlers 2, 2. Therefore, the cables 8, 8a are prevented from being dragged into or caught by the crawlers 2, 2 when the vehicle is traveled. In addition, a cable connector 24 for connecting and supporting the cables 8, 8a can be freely rotated around a supporting shaft 21, so that the deflection of the cable 8 in the vertical direction can be absorbed.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] Motoya @ relates to an inspection vehicle for the inside of a nuclear reactor containment vessel. [Technical Background of the Invention] The safety of nuclear power plants has become more stringent in recent years. In addition, for that reason, various equipment inside the reactor containment vessel should be protected against J! JK-equipped and regularly inspected.

For this inspection, inspection passages are set up on several floors inside the reactor containment vessel, and the inspection passages on each floor are connected by stairs.By the way, various equipment inside the reactor containment vessel The inspection work is radiation! Due to the risk of being exposed to IIK, it is necessary to avoid having workers spend long periods of time performing inspections.In addition, in the event of an accident, entering the containment vessel itself must be avoided. is extremely dangerous. For this reason, it is desirable that inspections of various equipment within the reactor containment vessel be carried out unattended as much as possible, except in cases where inspection cannot be completed without the help of workers. As a means of doing so, an inspection vehicle equipped with inspection equipment such as a self-propelled K I'rV camera is stored in an inspection passageway for workers! ! Each J in the container
! A method has been considered in which the inspection vehicle can be run on a regular basis, and as a front inspection vehicle, it is desirable to use a P-2 type T, which can run not only on the horizontal table inspection passage but also on the connecting stairs between the inspection passages.・Also, the above-mentioned inspection vehicle may be equipped with a battery as a power source for driving and operating the inspection equipment, but if the inspection vehicle is loaded with a battery, the weight of the inspection vehicle will be reduced. Since the amount of power increases significantly, a method of supplying power to the inspection vehicle from outside via a cable is generally considered.

[Problems with background technology]

However, in conventional crawler-type inspection systems, there is a risk that the power supply cable connected to the inspection vehicle may get caught in the claw 2 device while the inspection vehicle is running, and the power supply cable may be caught in the claw 2 device while the inspection vehicle is running. If the cable breaks, the crawler device may malfunction and the inspection vehicle may become unable to drive.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to prevent the power supply cable from being connected to the cloak device while driving, even though the vehicle is an inspection vehicle that is supplied with power from outside via a power supply cable. In order to prevent the KLI from being caught in the vehicle, it is necessary to provide a nuclear reactor containment vessel interior inspection vehicle that is free from the possibility of becoming unable to travel due to disconnection of the power supply cable or failure of the crawler device.

[In other words, the inspection vehicle of the present invention is equipped with crawler devices on both the front and rear sides, and each of these crawler devices is movable up and down around the base end. In the inspection vehicle on which the equipment has been repaired, a cable support device is provided between the crawler devices on both sides, supported by the tip of the crawler device O, and the power supply cousol, which is threaded through the underframe K11k through the crawler devices on both sides, is supported by the cable. By supporting the power supply cable with the cable support device, the power supply cable is prevented from touching the crawler device Kli.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to one side. In Figures 1 to 6, 1 in the figure is an underframe equipped with crawler devices 2.2 and J, Jt- on both front and rear sides, respectively. On top of this frame 1 is an inspection device (for example, an ITV camera) 4
is mounted on the support frame 11 through the support stand 6. 6 is a control box housing control equipment for controlling the inspection vehicle. and,
The base end sK of this support frame 11 is provided with nine crawler drive wheels 1
2, a crawler guide wheel (driven wheel) IJ with a tip 1sK11iHt of the support frame 11, and the crawler drive 12.
and a crawler 14 consisting of an endless chain or an endless belt wound around a crawler guide wheel 13. (No, but it is provided inside the underframe 1)
It is designed to be independently driven forward and backward. In addition, each of the four-wheel devices 2.2, B, and J has the base end of its support frame 11 pivoted on the underframe IK around the axis of the crawler drive wheel 12, and the base end It is designed to be able to move up and down around the center, and is configured so that it can be raised and rotated by a built-in underframe IK and by a P-tsu oscillation lifting mechanism as shown in Figure 3. This crawler-type inspection vehicle runs with the aforementioned cloak devices X, A change of direction at a location is carried out in good condition by raising the four-wheeler devices X and S as shown in FIG.

The crawler device 1.1 is swung up according to the inclination of the stairs when climbing the stairs, and is swung down when descending the stairs.On the other hand, r in the figure is the front side of the crawler device 1.1. Crawler device on both sides 2.2 Seki K
IO-1 device 2.20 is installed to support the tip In, I is a power supply cable. [1
Although the overall configuration of the cable feeding device g is not shown, it is of a self-propelled type with crawler devices on both the front and rear sides, similar to the inspection vehicle.
It is designed to drive at a reasonable distance from the inspection vehicle. 9. The cable support device 1 is a support frame 11 of one car @O crawler device 2゜2. IIK has nine supporting shafts 21 fixed horizontally at both ends, a connector support tube 22 rotatably fitted to the center of the support shaft 11 (D), and a connector support fitting 23 connected to the connector support tube 21. The power supply cable 28 is connected to the power supply cable f111 on the underframe 1 side via the cable connector Ifi14.
A and II are connected to each other and supported by this couple support device 1.

However, in the case of this inspection vehicle, even when changing direction of the inspection vehicle or raising the -2 device 2.2, the underframe IKm is passed through the vagina-to-device 2.2. The connected power supply cable 'eJ & beam is supported by the cable support device r located corresponding to the tip of the device 1.1, and is in contact with device 2.2 of device 2.2. Therefore, while the inspection vehicle was running, the power supply cable 8.8a was caught in the crawler device' * a l
Cable Connect that supports connecting! 24 is tilted -71 such that it can freely rotate around the support shaft 21, which also has the effect of absorbing OJl- into the upper and lower portions of the power supply unit 8.

FIG. 7 shows another embodiment of the present invention. In this embodiment, the cable support device 10 cable connector 24 in the above embodiment is connected to the power supply cables Ji, #aK when the puller device is raised. I was forced to point it in a direction that would prevent unsalted water from getting on it. That is, in this embodiment, the underframe 1 and the connector support tube 12 are integrally provided with a projecting L.
Connect l arm j12h with lever 2611C,
The inclination of the cable connector j4 is changed as the crawler device 2 is swung up, and the degree to which the direction of the cable connector 24 changes can be arbitrarily determined depending on the position of the bins xi and xi within the length of the lever 2s. In the above embodiment, the cable connector 24 can be rotated, but this cable connector 24
may be attached to the support fitting 21 by directly fixing the support shaft jJK to the connection support fitting 2J as shown in FIG. Furthermore, in the above embodiment, the power supply cooler I from the cable transmission device 9 and the Wc threaded power supply cable are connected to the underframe 1 at the cable support device 1;
When the power supply cable 8 from the device is placed directly on the underframe 1, the cable support device 1 is used to hold the power supply cable a between a pair of coupes 21°2, as shown in FIG. ◎It is a good idea to have a structure in which the cable clamping rollers as and xi are supported. In Fig. 9, number 2 is a support shaft that supports the cable clamping rollers as and xi, and this support shaft is the same as the one shown in Fig. 6 from 21 companies. It is.

[Effect of Gyomei]

Since the inspection vehicle of the present invention is as described above, it is an inspection vehicle that is supplied with power from the outside via a power supply cable, and the power supply cable is easily hooked onto the crawler device while the vehicle is running. Therefore, there is no possibility that the train will be unable to run due to a failure of the crawler device in the # wire of the power supply cable.

[Brief explanation of drawings]

Figures 1 to 6 show an embodiment of the present invention.
The figure is a flat view, Figure 2 is a front view, the front view of the No. 31IIFi crawler device in the raised state, Figure 44 is an enlarged plan view of a portion of Figure 1, and Figures 5 and 6 are the cable support device. They are a vertical front view and a vertical side view. FIG. 7 is a partial front view showing another embodiment of the present invention, FIG. 8 is a side view showing a modification of the cable support device, and FIG. 9 is a front view showing another modification of the cable support device. be. 1... Underframe, 2°, 3... Crawler device, 4...
! W camera, r...cable support device, #, #a = power supply cable. Applicant's agent: Patent attorney Takehiko E Takehiko Figure 1, Figure 2W! Figure 3 Figure 4

Claims (3)

[Claims] (1) In an inspection vehicle equipped with a crawler device on both the front and rear 1i1, and each of these two claw devices is equipped with an inspection device on an underframe that is movable up and down around the base end, the inner crawler device A cable support device is provided between the crawler devices to be supported at the tip end of the crawler device, and a power supply cable connected to the underframe is supported by the cable support device through between the crawler devices on both sides. Inspection vehicle inside the reactor containment vessel (2) The cable support device is characterized in that the cable support device is composed of a support shaft provided between the cloak devices on both sides and a cable connector supported by the support shaft. An inspection vehicle inside the reactor containment vessel. (3) Claim (1) characterized in that the cable support device comprises a support shaft provided between the cloak devices on both sides, and 91 pairs of cable holding rollers supported by the support shaft. ,! Reactor containment 1 described in J! - Interior inspection vehicle.