JPH03103810A - Industiral endoscope device - Google Patents

Abstract

PURPOSE:To improve grinding ability and to facilitate inserting and grinding work by fixing a rotation handling member at the front end of an endoscope so that it projects from the outside diameter toward its radius and is off-centered, and providing a means for moving the rotation handling member toward a rotary shaft. CONSTITUTION:The device is provided with a grinding wheel 8 as a rotary grinding member, a rotating/driving part 9, and a part 10 for adjusting an amount of projection (an amount of push); the grinding wheel 8 is fixed at the front end of a rotation transmitting member inserted in a fiberscope 2, the rotating/driving part 9 is connected to the rear end of the rotation transmitting member and rotates and drives the rotation transmitting member, and the adjusting part 10 varies an amount that the grinding wheel 8 projects from the fiberscope 2. The fiberscope 2 is provided with a long and narrow insertion part 12 so that it is inserted in a body to be detected, such a jet engine 11; an operation part 13 of a large diameter is formed at the rear end of the insertion part 12; an eyepiece part 14 for naked-eye-observation is formed at the rear end of the operation part 13; a light guide cable 15 extends from the side of the operation part 13, and can be connected to a light source device 3. Thus, the grinding work is facilitated, and the grinding ability can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an industrial endoscope apparatus provided with a rotary treatment member that is movable in the axial direction from the tip of an endoscope.

[Prior Art] In recent years, (industrial) endoscopes that can conduct non-destructive inspections have come into widespread use in industrial fields such as chemical plants and engine interiors.

For example, in a jet engine, damage such as chipping of the blade edge of a rotary turbine-grade blade may occur.

In this case, even if the damaged area is small, if left untreated, stress will concentrate on the damaged area and the damaged area will become larger.
The entire blade will need to be replaced.

For this reason, in the past, even if replacement was not required, if a damaged part was discovered, the solution was to disassemble the engine and grind the area around the chipped part.

This method had the disadvantage that it took a long time to repair.

For this reason, there is a conventional example in which a shaft equipped with a grindstone for grinding can be accessed at the distal end of an endoscope.

In the conventional example described above, a rotating grindstone is detachably attached to the distal end of the endoscope, but the structure is such that the position of the grindstone cannot be moved in the axial direction.

In addition, since the outer diameter of the entry port (access boat) for inserting the endoscope into the jet engine is small, in the conventional example described above, the grindstone is prevented from protruding radially outward beyond the outer diameter of the tip of the endoscope. ing.

[Problems to be Solved by the Invention] In the conventional example described above, the grindstone is designed so that it does not protrude beyond the outer diameter of the tip of the endoscope, so the outer diameter of the grindstone is limited to a very small one. Therefore, there is a drawback that the grinding process takes time.

Furthermore, since the grindstone cannot be moved in the direction of its rotation axis, there are limitations on how to grind, making the grinding work difficult.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide an industrial endoscope device that facilitates grinding work and can increase the grinding capacity.

[Means and effects for solving the problem] In the present invention, a rotary treatment member for performing a search etc. by rotation is provided at the distal end of an industrial endoscope and protrudes radially outward from the outer diameter of the distal end. By attaching it rotatably and providing a moving means that allows it to move freely in the direction of the rotation axis, it is possible to pass the access port through, and the grinding capacity can be improved by increasing the diameter of the shaft. Grinding work is also made easier.

[Example] Hereinafter, the present invention will be specifically explained with reference to the drawings.

FIGS. 1 to 7 relate to the first embodiment of the present invention.
The figure is an overall configuration diagram of the first embodiment, Figure 2 is a sectional view showing the tip side of the internal mirror of the first embodiment, Figure 3 is a sectional view showing the structure of the extrusion star adjustment section, and Figure 4 is the internal A front view showing the distal end of the endoscope;
5 and 6 are explanatory views showing how the access bow 1 is passed through, and FIG. 7 is an explanatory view showing how the blade is ground.

As shown in FIG. 1, the industrial endoscope equipment 1 includes a fiberscope 2 as an industrial endoscope, a light source device 3 that supplies illumination light to the fiberscope 2, and a fiberscope 2. A TV camera 4 attached to the TV camera 4, a camera control unit (hereinafter abbreviated as CCU) 5 that performs signal processing for the TV camera 4, and a standard video signal output from the CCU 5 are displayed. A flat-screen TV 6 such as a liquid crystal display V, a grindstone 8 serving as a rotary grinding member attached to the tip of a rotation transmitting member inserted through the fiber scope 2, and a rear end of the rotation transmitting member are connected to each other, and the rear end of the rotation transmitting member is connected to It is comprised of a rotation drive section 9 that rotationally drives a transmission member, and a protrusion amount (extrusion amount) adjustment section 10 that changes the protrusion amount of the grindstone 8 that is protruded from the fiberscope 2.

The fiber scope 2 has an elongated insertion section 12 so as to be inserted into a subject such as a jet engine 11, and a large diameter operation section 13 is formed at the rear end of this insertion section 12.
At the rear end of this operating section 13 is an eyepiece section 1 for visual observation.
4 is formed, and a line 1 to a guide cable 15 are extended from the side of the operation section 13 so that they can be connected to the light source device 3.

The insertion section 12 has a hard tip 16 formed at its front end, and a curved section 17 at the rear adjacent to the tip 16. By rotating a curved knob 18 provided on the operating section 13, This curved portion 157 is curved vertically/horizontally, etc., so that the tip portion 16 can be oriented in a desired direction.

The rear part adjacent to the curved part 16 is a long hard part 1
9, and a soft portion 20 of a suitable shape is formed at the rear thereof, that is, at the rear end portion of the insertion portion 12.

A guide 21 for transmitting illumination light is inserted into the insertion portion 12 and the light guide cable 15,
By connecting the connector at the end of the light guide cable 15 to the light source device 3, the illumination light supplied from the light source device 3 is transmitted to the tip end 16 side. As shown in FIG. 2, the "C" illumination light is emitted to the outside through the optical rod 23 (or optical lens) constituting the illumination optical system 22.

An optical image of the test site illuminated with this illumination light is formed on the focal plane by a distorted object optical system 24 adjacent to the illumination optical system 22. A distal end surface of an image guide 25 is disposed on this focal plane, and the image is transmitted to the end surface on the eyepiece section 1/I side by the image guide 25.

6 An eyepiece (not shown) is disposed in the eyepiece section 14,
The optical image transmitted through the eyepiece can be observed with the naked eye. The external TV camera 4 detachably attached to the eyepiece 14 is provided with an imaging lens 26, and the imaging lens 26 forms an optical image on the COD 27 as a solid-state image sensor. .

The image signal photoelectrically converted by this COD27 is sent to the CCU5
The signal is input to the computer, undergoes signal processing, and is displayed in color on the flat-screen television 6.

As shown in FIG. 2, a channel 32 is formed in the insertion section 12 of the fiberscope 2 by a soft protective tube 31, and the tip of this tube 31 is connected to the tip 1.
It is fixed via a connecting pipe 35 to a through hole 34 provided in a tip member 33 constituting 6.

The rear end side of this channel 32 is open at the side of the operating section 13. In the first embodiment, a flexible shaft 36 is inserted into the channel 32, and the grindstone 8 is fixed to the tip of the flexible shaft 36 via a rigid connecting shaft 37.

The grinding wheel 8 has a cylindrical shape as shown in FIG. 2 or 4, and is eccentric from the center O of the tip 16 as shown in FIG. It is set as.

Further, with respect to the radius R of the tip portion 16, the radius r of the grindstone 8 is provided so as to protrude outward in the radial direction from the extension line of the radius R.

On the other hand, the extrusion II joint section 10 attached to the channel opening of the operating section 13 has a structure shown in FIG. 3.

At the channel opening, a case 41 of the extrusion amount adjustment section 10 is installed.
A mounting pipe 42 fixed to the mounting pipe 42 can be fitted into the mounting pipe 42, and the mounting pipe 42 can be fixed by a fixing screw 43 from the side in a removable manner.

The flexible shafts 1 to 36 passed through the case 41 through the pipe 47I are pulled out while being covered with a soft protective tube 45, and the ends thereof are is connected to the rotation drive section 9. In addition, the protective tube 4 is attached to this pipe 44.
5 is fixed.

In this case 41, a flexible shaft 36 inserted through a soft protective tube 45 (L) is housed in a state that can be bent into, for example, a semicircle. The proximal end of the extrusion amount adjusting knob 47 is fixed to the protective tube 45 inside the case 41.

By moving the extrusion amount adjusting knob 47 protruding from the elongated hole 46 along the elongated hole 46 as shown by arrow 8, the amount of bending of the flexible shafts 1 to 36 is varied, and the flexible shaft 36 is moved. The flexible shafts 1 to 36 can be pushed forward and the pushed flexible shafts 1 to 36 can be moved backward.

For example, in the state shown in FIG. 3, the grindstone 8 attached to the front end of the flexible shaft 36 via the connecting shaft 37 is in the state shown by the solid line in FIG. When the knob 47 is moved downward to push the flexible shaft 36 forward, the grindstone 8 can be projected forward, that is, in the axial direction of the rotating shaft, as shown by the dotted line in FIG. In addition, in FIG. 2, the curved portion 17 adjacent to the tip portion 6
4 is covered with four outer sheaths, and a large number of curved pieces (not shown) are rotatably connected inside the outer sheaths.

As shown in FIG. 1, this fiberscope 2 can be ground using a grindstone 8 if, for example, the combinator blade 51 of the jet engine 11 is damaged during inspection.

In the case of the above grinding, the bulkhead 52 of the jet engine 11
．． 53 access port 54. ．． 55, and the distal end side of the insertion portion 12 with the grindstone 8 attached thereto can be introduced into the blade 51 side. In this case, by fixing the intermediary part fixing jig 56 to the partition wall 52 provided with the access port 54 with screws 57, the insertion part 12 can be inserted smoothly.

Also, if it is inserted to a point where it is easy to grind, the fixing knob 5
8 allows the hard part 19 to be fixed. In general, by placing the 10-inch TV 6 on this insertion part fixing jig 56 or attaching it with a magnet or the like, it can be operated in a state where it can be easily observed.

By the way, for example, the diameter D of the opening of the access boat 54 is the maximum diameter on the tip side with the grindstone 8 attached. If the large size is smaller than R+e+r in Figure 4 (of course D>2
R, D>2r), they can be joined as shown in FIG. 5 or FIG.

As shown in FIG. 5, the thickness of the partition wall 52 is 5 2 A b<
If the distance from the tip surface to the grinding wheel 8 is 52 mm thick,
By protruding the grindstone 8 so as to be larger than A, the tip 16 may be moved to the opposite side (downward in FIG. 5) from the eccentric direction of the grindstone 8 after the grindstone 8 is inserted. . Note that the dotted line indicates the normal grinding position, and indicates that if you try to insert it while it is set in this state, you will not be able to pass it through the access port 54.

In other words, if it is fixed at the normal grinding position as in the conventional example,
Although it is not possible to attach a large grindstone 8, the access boat 54 having a small diameter D can be passed by moving the grindstone 8 protrudingly in the direction 11 of its rotation axis as in the first embodiment. In this case, the rigid connecting pipe 37 can be passed through without having to protrude entirely.

On the other hand, as shown in FIG.
If A' is thick, the flexible shaft 36 can be bent by making at least the entire hard connecting pipe 37 protrude forward from the tip and bending the flexible shaft 1-36. Even if the grindstone 8, which is eccentrically inserted and protrudes outward in the radial direction by the outer diameter 2RJ of the tip portion 16, can be passed through.

In Fig. 6, the dotted line indicates the normal grinding position, and in this case as well, in a test setup that cannot move in the axial direction like the conventional example, a grinding wheel with a small outer diameter that does not protrude from the diameter of the tip is used. However, according to the first embodiment, since there is no such restriction, the grinding capacity can be increased and the grinding can be done in a short time.

Further, according to the first embodiment, since the protrusion amount 12 of the grindstone 8 can be freely changed, the degree of freedom in grinding increases and the grinding work becomes easier.

For example, as shown in FIG. 7, when one side of the blade 51 is to be ground into a flat surface, it is better to have the grindstone 8 protrude radially outward from the outer diameter of the tip 16.
The outer circumferential portion 16A of the tip on the grindstone 8 side does not come into contact with the blade 51 and make grinding difficult, and when attempting to grind the blade portion forward from the position shown in FIG. 7, in the conventional example, the amount of protrusion is Since the front end of the blade 51 cannot be changed, the front end of the tip comes into contact with the tip of the blade 51, making it difficult to grind.However, in the first embodiment, the grinding work can be performed without causing such problems.

As described above, the first embodiment has many advantages over the conventional example, such as improved grinding ability, easier grinding work, and the ability to pass a small access boat even when a large judicial grindstone 8 is attached. have

Note that children can also use the grindstones 8 of different sizes interchangeably.

In this case, the connecting pipe 37 and the flexible shaft 36
The entire grindstone 8 may be replaced, or the grindstone 8 may be detachably attached to the connection pipe 137, and only the grindstone 8 may be replaced depending on processing such as grinding.

FIG. 8 shows the main parts of the second embodiment of the present invention.
In the embodiment, a plurality of hard pipes 61 are provided in the through hole 34 of the tip portion 16 so as to be slidable relative to each other like a rod antenna.
a. A connecting pipe 62 consisting of 61b, . A grindstone 8 is attached to the tip of the flexible shaft 36 via a fixing ring 63.

The connecting pipe 35 is attached to the rear end of the hard pipe 61a fixed to the through hole 34, and the tip of the protective tube 31 is fixed thereto.

The rest of the structure is almost the same as that of the first embodiment.

In this second embodiment, by changing the amount of protrusion of the flexible shaft 36 on the proximal side, the pipe 61b1 is connected to the hard vibrator 61a.
The length of the extension pipe 62 is varied by sliding the pipes 61C with respect to lb, and the grindstone 8 can be set at any position in front of the tip 16.

In this second embodiment, the length of the extension pipe 62 can be varied, so if the length of the extension pipe 62 is set to be greater than the thickness of the partition wall, the same function as in the first embodiment can be achieved. Can be done.

9 to 11 relate to the third embodiment of the present invention, FIG. 9 shows the overall configuration of the third embodiment, FIG. 10 shows the structure of the extrusion amount adjusting section, and FIG. 11 shows the grinding wheel. shows the shape of

The third embodiment shown in FIG. 9 uses an extrusion rate adjustment section 71 that is different from the extrusion temperature adjustment section 10 in the first embodiment shown in FIG.

As shown in FIG. 10, the flexible shaft {36 inserted into the operating part 13 is exposed from the protective tube 31 near the channel opening, and is inserted into the movable slide connecting part 72 at the opening. ing. The rear end of this slide connecting portion 72 is tapered, and the front end of the protection=1-cord 73 is fixed.

A support nut 74 is fixed 15 in the horizontal hole of the opening, and a pin 1 75 for fixing this support nut 74 is screwed, and by rotating this fixing bolt 75 and causing its tip to protrude, This is so that the movement of the slide connecting portion 72 can be stopped. Furthermore, by loosening the fixing bolts 1 and 75, the slide connecting portion 73 can be moved as shown by arrow B, and by this movement, the amount of extrusion of the flexible shaft 36 can be varied and the grinding wheel 8 can be moved. It is designed so that it can protrude from the tip portion 16 to an arbitrary length.

In addition, in this embodiment, as shown in FIG. 11(a) or (b), a grindstone 8' with chamfered corners or a grindstone 8 with rounded corners is used.
'' is used to facilitate insertion and removal.

The rest of the structure is similar to that of the first embodiment, and the same members are given the same reference numerals and their explanations will be omitted.

Further, its operation and effect are almost the same as those of the first embodiment.

FIG. 12 shows an entire modification of the third embodiment of the present invention.

This modification is based on the fiber scope 2 in the third embodiment.
A video scope 81 is used instead of the TV camera 4 mounted on the fiber scope 2.

This videoscope 81 has an insertion section 12 and an operation section 13 similar to the fiberscope 2 in the third embodiment, and a universal cord 82 extends from the operation section 13 instead of the light guide cable 15. Illumination light is supplied by connecting the connector 83 at the tip of this universal lead 82 to the light source device 3. This connector 83
By extending a signal cable 84 to the CCU 5 and connecting it to the CCU 5, signal processing for the video endoscope 81 can be performed. Note that the videoscope 81 has a CG [) disposed on the focal plane of the objective lens.

The rest is the same as in the third embodiment, and the same members are denoted by the same reference numerals and their explanations will be omitted.

FIG. 13 shows the main parts of the fourth embodiment of the present invention.

In this embodiment, the rotary drive section 91 is fitted into the opening of the operating section 13 so that it can be attached.

Inside this rotary drive unit 91, a motor 92 is fixedly stored on a motor stand 94 via a motor fixture 93, and a rack 95 is attached to the motor stand 94. By rotating the fitted pinion 96, the motor 92 and the rack 95 can be moved upward as indicated by arrow C. A guide 99 is provided on the opposite side of the rack 95. An extrusion amount adjusting dial 97 is attached to the rotating shaft of the pinion 96, and by rotating this dial 97, the flexible shaft 36 is adjusted. By pushing out or retracting the grindstone 8, the grindstone 8 protruding from the tip can be variably set to any protruding position.

Note that a cable 98 connected to the motor 92 is connected to a power source. The operation of the motor 92 can be turned on and off by, for example, a foot switch (not shown) or a switch (not shown) provided at an appropriate position on the outer periphery of the rotary drive section 91.

The rest of the structure is the same as that of the third embodiment, and the same 18 The members are designated by the same reference numerals 4-J.

The operation and effect of this fourth embodiment are almost the same as those of the first embodiment.

It is also possible to construct different embodiments by combining the embodiments described above.

[Effects of the Invention] As described above, according to the present invention, a rotary treatment member for performing grinding etc. is mounted eccentrically on the tip of the internal mirror so as to protrude in the radial direction from the outer diameter of the tip, Since a means for moving the rotary treatment member in the direction of the rotation axis is provided, the grinding ability can be improved, and the insertion work and the grinding work can be easily performed.

[Brief explanation of drawings]

FIGS. 1 to 7 relate to the first embodiment of the present invention.
The figure is an overall configuration diagram of the first embodiment, FIG. 2 is a sectional view showing the distal end side of the endoscope of the first embodiment, FIG. 3 is a sectional view showing the structure of the extrusion amount adjusting section, and FIG. A front view showing the tip of the endoscope,
Figures 5 and 6 are explanatory diagrams showing how the access boat passes through, Figure 7 and 19 are explanatory diagrams showing how the blade is ground, and Figure 8 is the structure of the tip side of the second embodiment of the present invention. FIGS. 9 to 11 relate to the third embodiment of the present invention, FIG. 9 is a configuration diagram showing the entire third embodiment, and FIG. 10 shows the structure of the extrusion amount adjusting section. 11 is a side view showing the shape of the grinding wheel; FIG. 12 is a diagram showing the overall structure of a modification of the third embodiment of the present invention; and FIG. 13 is a fourth embodiment of the present invention. FIG. 1... Industrial endoscope equipment 2... Fiber scope 3... Light source device 4... TV camera 5...
・CCU 6...Flat-screen TV 8...Square stone 9...Rotation drive unit 10...Extrusion amount adjustment 11...Jet engine 12...Insertion part 13...Operation unit 16...
- Tip part 17... Curved part 19... Hard part 22... Illumination optical system 24... Objective optical system 36... Flexible shaft 20 37... Connection pipe 51... Plate'

Claims (1)

[Claims] An industrial endoscope is provided with an observation optical system and an illumination optical system for emitting illumination light at the distal end of an elongated insertion part, and an industrial endoscope that protrudes forward from the front end surface of the distal end, An industrial endoscope apparatus comprising: a rotational treatment member that protrudes radially outward from the outer diameter; and a moving means for moving the rotational treatment member in its axial direction.