JPS6027962Y2 - Traveling device for non-destructive testing equipment - Google Patents

Description

[Detailed description of the invention] This invention is a self-propelled device for a nondestructive inspection device that inspects defects that may cause accidents without destroying materials, structures, or products. be.

Conventionally, most of the traveling devices employed in non-destructive testing equipment are driven by screws or hydraulic/pneumatic cylinders.

However, these conventional traveling systems have the following drawbacks and cannot be operated continuously by their own operation without complicated drive means and rails or human power.

For this reason, remote control was not possible when non-destructive testing of equipment exposed to radiation was performed, which was inconvenient.

The present invention eliminates the drawbacks of the conventional traveling method described above, and is a self-propelled type that has a simple structure, can travel by its own operation, and can be remotely controlled when performing non-destructive testing of exposed equipment. The purpose of the present invention is to provide a traveling device for a non-destructive testing device.

The configuration of the present invention, which is distantly related to this purpose, is to divide the moving table that runs over the object to be inspected into two parts, a front moving table and a rear moving table, each of which is equipped with an electromagnet that acts to attract the object to be inspected. At the same time, a spring acts to keep the distance between the front moving platform and the rear moving platform constant, an electromagnet pulls or pushes the front and rear moving platforms apart to expand and contract the distance, and this expansion and contraction movement is gently adjusted. A dashpot is installed between the front moving platform and the rear moving platform to connect the front and rear moving platforms, and either the front moving platform or the rear moving platform is equipped with an inspection device, and the front moving platform is equipped with an inspection device. The electromagnets on the table and the rear moving table are alternately excited to fix the object to be inspected alternately, while the electromagnets and springs between the front and rear moving tables work together to alternately expand and contract the distance between the moving tables. , is characterized by being made to run like an inchworm.

The configuration of the present invention will be explained below based on one of the specific examples shown in the drawings.

The movable stage that travels over the object A is divided into a front movable stage 1a and a rear movable stage 1b.
An electromagnet 3at3b is provided on the lower surface of the electromagnet 3at3b, and a support leg 2 is provided for positioning the front and rear movable tables 1a, lb at a constant distance from the object A to be inspected.
There are multiple books.

In order to ensure stability, the support legs 2 are provided at at least three locations that are not on the same straight line.

Further, as shown in FIGS. 4a and 4b, the electromagnets 3a and 3b are attached to an outer cylinder 4 for electromagnets fixed to the rear movable table 1b. A single-shaped iron core 6 is suspended inwardly via a tension spring 5, and a coil 7 is wound around this iron core 6.

Therefore, normally, the iron core 6 is pulled up together with the coil 7 by the force of the tension spring 5, but at the same time when the coil 7 is energized by electricity, the iron core 6 is magnetized and becomes an electromagnet, which attracts the object A to be inspected. The moving table 1b is fixed on the object A to be inspected.

In addition, if the object A to be inspected is a flat plate-like object, then the electromagnet 3a
, 3b is not moved up and down, so the iron core 6 is placed on the moving table.
and the coil 7 may be fixed.

Further, the front moving table 1a is provided with a wall portion 8a that is perpendicular to the object A to be inspected and also perpendicular to the traveling direction, and the coil 12 of the electromagnet 10 built in the casing 11 is attached to this wall portion 8a. It is fixed.

On the other hand, the rear movable table 1b also has a wall portion 8b orthogonal to the object A to be inspected and perpendicular to the traveling direction, and a support arm 9 extending from this wall portion 8b toward the front movable table 1a side. is formed protrudingly, and a dashpot 1 is provided at the tip of this support arm 9.
Piston rod 16 of dashpot 14 passing through 4
is pivoted so as to be able to swing vertically, while the casing 15 of this dashpot 14 is fixed to the front movable base.

A plunger 13, which moves within a coil 12 of an electromagnet 10 fixed to the front moving table 1a by excitation of the coil 12, is connected to the piston rod 16, which is pivotally supported on the rear moving table 1b, by a connecting pin 18. The front movable table 1a and the rear movable table 1b are connected, and even if the inspected object A is curved, the inspected object A and the inspection device 1 follow the curvature.
9 so as to maintain a constant interval.

Therefore, the plunger 13 protruding toward the rear movable base 16 is magnetized by the excitation of the coil 12 and is attracted toward the front movable base 1a, thereby causing the piston rod 16 of the dashpot 14 to move toward the fluid inside the dashpot 14. Since the rear moving platform 1b is gradually pushed forward while facing resistance, the rear moving platform 1b can be gradually drawn forward.

Alternatively, as in another example shown in FIG. 3, the coil 12 is fixed to the wall 8a of the front movable table 1a, while the casing 15 of the dashpot 14 is attached to the tip of the support arm 9 of the rear movable table 1b. is pivoted so that it can swing vertically,
Plunger 13 and dashpot 14 of the electromagnet 10
The piston rod 16 may be connected to the piston rod 16 by a connecting member 18.

Further, there is a space between the front moving table 1a and the rear moving table 1b so that the distance between the front moving table 1a and the rear moving table 1b, which has become narrow due to the operation of the electromagnet 10, is expanded and kept constant. A compression spring 17 is provided which acts on.

Therefore, the front movable base 1a and the rear movable base 1b, which are attracted by the electromagnet 10, repel each other due to the elastic force of the spring 17, so if the rear movable base 1b is fixed, the front movable base 1a is pushed out. .

At this time, if the front movable platform 1a is pushed out in an instant, the front movable platform 1a will stumble, so the dashpot 14 is provided so that its elastic force is gradually released.

Note that the operational relationship between this spring 17 and the electromagnet 10 described above may be reversed.

In other words, the electromagnet 10 may be used to push the front movable base 1a and the rear movable base 1b apart to create a gap, while the spring 17 may be used as a tension spring to draw the front and rear movable bases 1a and lb together to shorten the distance.

Furthermore, the electromagnet 10 and dashpot 14 may also be separately attached between the front and rear movable bases 1a and 1b.

In this case, the electromagnet 10 is positioned at the center of the movable base, and dashpots 14 are installed at both ends thereof, and the speed at which the distance between the front and rear movable bases 1a and 1b is moved apart or closer by adjusting the dashpots, that is, the speed of expansion and contraction. is provided so that it can be controlled arbitrarily.

Next, the operating state will be explained.

The front moving table 1a is moved by exciting the electromagnet 3a of the front moving table 1a.
is fixed to the object to be inspected A, and the electromagnet 3a of the rear movable table 1b is demagnetized to make the rear movable table 1b movable,
The electromagnet 10 provided between the front movable table 1a and the rear movable table 1b is excited to gradually draw the rear movable table 1b forward, and the inspection device 19 performs a flaw detection inspection on the object A (fifth (See Figures a”-b).

At this time, the dashpot is adjusted so that the inspection device 19 travels over the inspection object A at a necessary and sufficient speed.

Next, the electromagnet 3b of the rear movable table 1b is energized to fix the rear movable table 1b to the object A to be inspected, while the front movable table 1a
The electromagnet 3a is demagnetized to make it movable.

Then, the front movable base 1a is moved to the dashpot 1 by the elastic force of the compression spring between the front movable base 1a and the rear movable base 1b, which are compressed by the pull of the rear movable base 1b.
4, it is gradually pushed forward (Fig. 5b)
” c).

Thus, the front movable base 1a and the rear movable base 1b can be moved alternately to allow the robot to travel a distance 1 like an inchworm.

Note that if the object to be inspected is a non-magnetic material such as stainless steel, a steel rail is used.

Since the present invention is constructed as described above, if the object to be inspected is a magnetic material such as steel, it can run continuously by its own expansion and contraction movement without using human power or a running rail.

If the object to be inspected is a non-magnetic material, a steel rail is required, but compared to conventional screw-type or hydraulic-type traveling devices, it has a simpler structure of switching electromagnets. , it has the advantage of being extremely easy to maintain and inspect.

[Brief explanation of the drawing]

Figures 1 and 2 relate to the non-destructive inspection device traveling device according to the present invention, and show the state in which the rear moving table is drawn.
FIG. 1 is a side view, partially in section, and FIG. 2 is a plan view. FIG. 3 is a perspective view showing another specific example of the traveling device of the non-destructive testing device. Figures 4a and 4b show the electromagnet of the movable table, where a shows the magnetized state and b shows the demagnetized state. Figures 5a to 5C show the operating states of the traveling device of the non-destructive testing device according to the present invention, where a is normal no-load state, b is when the rear movable table is moving, and C is when the front movable table is in operation. Indicates when moving. In the drawing, 1a is the front moving table, 1b is the rear moving table, 3a is the electromagnet of the front moving table, 3b is the electromagnet of the rear moving table, 10
14 is a dashpot, 17 is a spring, 19 is an inspection device, and A is an object to be inspected.

Claims (1)

[Scope of utility model registration request] The moving table that runs over the object to be inspected is divided into a front moving table and a rear moving table, each of which is provided with an electromagnet that attracts the object to be inspected. A spring that acts to keep the distance constant, an electromagnet that pulls or pushes the front and rear movable bases apart to expand and contract the distance, and a dashpot that gently adjusts this expansion and contraction movement are installed in the front movable base and the rear movable base. The front and rear movable bases are connected between the front and rear movable bases, an inspection device is provided on either the front movable base or the rear movable base, and the electromagnets of the front movable base and the rear movable base are alternately excited. While fixed alternately to the object to be inspected, electromagnets and springs between the front and rear movable bases work together to alternately expand and contract the distance between the movable bases, allowing them to travel like inchworms. A traveling device for a non-destructive testing device featuring: