JPS58836Y2 - Chuck device for pipe hydraulic pressure test - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a chuck device for testing pipe hydraulic pressure, and particularly to a chuck device suitable for remote control.

In general, hydraulic pressure tests on pipes are performed using a pipe that is closed at one end and fitted with a fitting that has a liquid introduction path at the other end, and the tube is chucked onto a test machine pull rod or the like via the fitting. .

Conventionally, this chuck operation has been performed using a proximity operation or a hydraulic device.

However, in cases where close operation is dangerous, such as when testing radioactive tubes collected from nuclear fuel rods, it is necessary to remotely chuck the tubes from an isolated room, but conventional chucks are not suitable. This method has the disadvantage that this is not possible or the device becomes extremely complex.

It is an object of the present invention to solve the above-mentioned conventional problems and to provide a chuck device for pipe hydraulic pressure testing that is a simple device that does not use an actuator or the like and can be chucked by remote control.

The present invention includes a spanner metal fitting that is rotatably provided on a testing machine pull rod and has a guide hole for fitting and supporting a mounting metal fitting;
It is equipped with a rotational direction changing mechanism linked to this spanner fitting and an operating member that remotely controls the rotational direction changing mechanism, and by rotating the spanner fitting, the tube can be attached to the test machine pull rod via the mounting fitting. It was formed.

The present invention will be described below based on an illustrated embodiment.

In the figure, 1 is a tube whose upper end is sealed, and a hexagonal bolt-shaped fitting 2 is provided at the lower end of the tube 1, and the tube 1 is screwed into the test machine pull rod 3. By doing so, it is configured to be erected on the upper end of the tester pull rod 3.

The liquid introduction path 4 provided at the axial center position of the tester pull rod 3 is configured to communicate with a liquid introduction path (not shown) provided in the mounting bracket 2 when the mounting bracket 2 is attached.
Further, the hexagonal bolt portion 2a of the mounting bracket 2 is formed to be longer than the length of the threaded portion 2b that continues below the hexagonal bolt portion 2a.

As shown in the figure, a first bevel gear 5 is rotatably attached to the upper end of the test machine pull rod 3 configured as described above.
Detachment from the tester pull rod 3 is prevented by a nut 6 that is screwed onto the tester pull rod 3 from above.

As shown in FIG. 2, a spanner fitting 7 having a gate-shaped cross section and covering the upper end of the tester pull rod 3 is screwed onto the top of the first bevel gear 5. There is a guide 7L8 that can insert and support the hexagonal bolt part 2a.
is drilled.

The upper end edge of this guide hole 8 is provided with a chamfer 9 to facilitate fitting of the mounting bracket 2, as shown in the figure.

A second bevel gear 11 that is rotatably supported by a support fitting 10 that stands up from the side surface of the tester pull rod 3 in an approximately T shape is meshed with the first bevel gear 5 . is pivotally supported at one end by the tester pull rod 3, and a handle 14 is remotely fixed to the other end via a universal joint 13.

When the above configuration is operated, the square tube 1 is gripped by a manipulator (not shown), and the mounting bracket 2 is inserted into the guide hole 8 through its threaded portion 2b.

Then, release the grip and rotate the handle 14.

Then, the second bevel gear 11 rotates via the universal joint 13, and the first bevel gear 5 that meshes with the second bevel gear 11 rotates.

As a result, the spanner fitting 7 and the fitting 2 (that is, the tube 1) fitted and supported by the spanner fitting 7 rotate, and the fitting 2 is screwed onto the tester pull rod 3.

When removing the tube 1, the handle 14 may be reversed and the operation described above may be reversed.

As explained above, according to this embodiment, the tube 1 can be maintained in an upright position simply by inserting the mounting bracket 2 into the guide hole 8 of the spanner bracket 7, and the bevel gear mechanism can be remotely operated without using an actuator or the like. By doing this, the tube 1 can be chucked to the test machine pull rod 3, so the structure and operation are simple, and if the shaft 12 is provided with a plurality of flexible joints,
Can be operated from any position.

In the above embodiment, the mounting bracket 2 has been described as having a hexagonal bolt shape, but the present invention is not limited to this as long as the spanner bracket 7 and the mounting bracket 2 can be interlocked with each other.

Further, the rotational direction changing mechanism is not limited to a bevel gear mechanism, but may also be a chain belt mechanism, a friction transmission mechanism, or a hypoid gear, a screw gear, a worm gear, or the like.

The present invention has been described above based on the preferred embodiments, but according to the present invention, chucking can be performed by remote control with a simple structure that does not use an actuator or the like.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of a chuck device for pipe hydraulic pressure testing according to the present invention, and FIG. 2 is a sectional view of FIG. 1. 1...Pipe, 2...Mounting bracket, 3...
...Testing machine pull rod, 5...First bevel gear,
7...Spanner fitting, 8...Guide hole,
11...Second bevel gear, 12...Shaft, 1
4... Handle.

Claims (1)

[Scope of utility model registration request] 1. A pipe hydraulic pressure test chuck device for attaching a pipe having a fitting at the end to a testing machine pull rod includes a wrench fitting rotatably provided on the testing machine pull rod and having a guide hole for fitting and supporting the fitting; It is equipped with a rotational direction changing mechanism linked to the spanner fitting and an operating member that remotely controls the rotational direction changing mechanism.By rotating the spanner fitting, the tube can be attached to the test machine pull rod via the mounting fitting. A chuck device for pipe hydraulic pressure testing, characterized in that it is formed as follows. 2. The chuck device for pipe hydraulic pressure testing according to claim 1, wherein the rotational direction changing mechanism is comprised of a pair of meshing bevel gears.