CN216813431U - Portable supporting device of equipment for detecting and cleaning inner walls of blind holes and deep holes - Google Patents

Abstract

The utility model discloses a portable supporting device for equipment for detecting and cleaning inner walls of blind holes and deep holes, which comprises a power supply, an operating unit and an extension rod, wherein the extension rod is inserted into the operating unit, the parts of the extension rod outside the blind holes and the deep holes are connected and supported by an extension rod hole outer supporting unit, the parts of the extension rod inside the blind holes and the deep holes are connected and supported by an extension rod hole inner supporting unit, the tail end of the extension rod hole inner supporting unit is connected with a working section supporting unit, and polishing and cleaning equipment and auxiliary equipment can be arranged in the working section supporting unit according to the operation requirements. The supporting device ensures that the inner wall detection and cleaning equipment is always consistent with the axle center of the inner wall of the workpiece to be detected, and the supporting device is of an easily-disassembled structure and can improve the processing and detection precision in the field construction process.

Description

Portable supporting device of blind hole and deep hole inner wall detection and cleaning equipment

Technical Field

The utility model relates to the field of detection devices, in particular to a portable supporting device for equipment for detecting and cleaning inner walls of blind holes and deep holes.

Background

The blind holes and deep holes of the existing in-service equipment facility body need to be cleaned and detected regularly. Because the large-scale inner wall processing of conventional specialty, detection device are fixed installation, difficult disassembling is hauled to the maintenance scene, so wait to clear up, detect and need hauled to the scene, and wait to detect, processing equipment facility needs to form a complete set respectively and use.

Demolish during labour equipment facilities overhauls, pull and transport to third party's mill and polish, detect, this process need consume a large amount of manpower, material resources, financial resources and the most valuable time, and large-scale main shaft class still need consider during the pull, detect that the installation is debugged for a long time can not the barring and the safety risk.

SUMMERY OF THE UTILITY MODEL

Based on the problems existing in the practical situation, the utility model aims to provide a portable supporting device for detecting and cleaning equipment for the inner walls of blind holes and deep holes of in-service facilities. Can support the portable strutting arrangement who polishes, clearance, detects to reduce the manpower, material resources, financial resources and the loss of time that dismouting, hauling produced.

The technical scheme of the utility model is as follows:

the portable supporting device comprises a power supply unit and is characterized by further comprising an operation unit and an extension rod, wherein the extension rod is connected with the operation unit in an inserting mode, the part of the extension rod outside the blind hole/deep hole is connected and supported by an extension rod hole outer supporting unit, the part of the extension rod inside the blind hole/deep hole is connected and supported by an extension rod hole inner supporting unit arranged at equal intervals, and the tail end of the extension rod hole inner supporting unit is connected with a working section supporting unit. The supporting unit fixes the detection and cleaning equipment; the extension rod hole outer support unit can limit the movement of the extension rod, and the extension rod hole inner support unit can adjust the opening and closing angle to be matched with the hole inner wall.

Furthermore, the working section supporting unit comprises two thickened annular gaskets and three screw rods vertically and fixedly connected between the two thickened annular gaskets, and the two thickened annular gaskets are coaxial and parallel to each other; preferably, two ends of the screw rod are respectively and vertically connected with three screw holes which are uniformly distributed on the gasket circular ring at intervals of 120 circumferential angles;

in order to better contact with the walls of the deep holes and the blind holes, wear-resistant rollers are symmetrically arranged on the edge of the ring of the gasket at intervals of 120 circumferential angles; the wear-resisting gyro wheel comprises the telescopic bracing piece of fixing in gasket ring edge, the second antifriction bearing of bracing piece end connection and the locating pin of bracing piece. The length of the supporting rod is adjusted through the positioning pin, and the supporting rod can be better attached to the inner wall of the deep hole or the blind hole. The inner grinding device is convenient to integrally internally cut on the inner wall of the small-diameter pipe with the same axle center and radially advance in the working section.

Furthermore, three rigid connecting belts are symmetrically fixed on the outer side of the gasket at intervals of 120 circumferential angles, the other end of each rigid connecting belt is fixedly connected with a transition connecting pipe, and the other end of each transition connecting pipe is inserted into the end part of the extension rod in the hole. The one end of transition connecting pipe grafting extension rod is seted up with the connecting hole that thin extension rod tip interval and aperture are the same, adopts screw rod fixed connection after cup jointing.

Preferably, the three rigid connecting belts are three equal arc-shaped slices uniformly cut along a high-strength steel pipe with the diameter of 30 x 2.5mm in the axial direction at a circumferential angle of 120 degrees. Preferably, the diameter of the transition connecting pipe is 25 multiplied by 2.5mm, the rigid connecting belt is a rigid steel pipe with the diameter of 30 multiplied by 2.5mm which is axially sliced, and the connecting part of the rigid connecting belt and the transition connecting pipe is well jointed.

Furthermore, the extension rod is alternately sleeved by a thin extension rod and a thick extension rod, and two identical plug holes are arranged at the two ends of the thin extension rod and the two ends of the thick extension rod at equal intervals. The thin extension rod is fixed at the inserting hole through a bolt after being inserted with the thick extension rod, and the tail end part in the extension rod hole is sleeved with the transition connecting pipe.

Furthermore, a stopping ring is arranged at the sleeve joint of the thin extension rod and the thick extension rod, and scales are marked on the thin extension rod and the thick extension rod for zero point at the stopping ring for calculating the depth in the hole.

The extension rod hole inner supporting unit comprises two basic connecting plates oppositely arranged on the extension rod, the inner arcs of the basic connecting plates are attached to the outer wall of the extension rod, a through groove is axially formed in the middle of the arc surfaces of the basic connecting plates, sliding bolts are connected in the through groove in a sliding mode, and the sliding bolts are symmetrically hinged to two first connecting rods with equal length; on the basic connection plate, a hinge bolt is fixed at the position on a straight line communicated with the through groove outside one end of the through groove, and two second connecting rods with equal length are hinged at the hinge bolt; the tail end of the first connecting rod is hinged to the second connecting rod, and the tail end of the first connecting rod is connected to one point of the second connecting rod but can rotate 180 degrees.

Preferably, the second connecting rod is hinged to the end of the first connecting rod at a distance 1/3-1/2 from the hinge bolt; a rolling bearing is fixed at the terminal of the second connecting rod;

the two basic connection plates are oppositely and internally arc-jointed on the extension rod and are fixed with the extension rod through rigid hoops at two ends.

The extension rod hole outer supporting unit comprises a supporting frame, the supporting frame is a telescopic rod, a supporting table is fixed to the upper end of the supporting frame, a door-shaped frame is connected to the supporting table in a sliding mode, and a middle shaft of a third rolling bearing is horizontally and axially fixed to two side plates of the supporting table. A fixed groove is fixed on the inner side of the top of the door-shaped frame, which is opposite to the third rolling bearing, and the extension rod moves in the area between the third rolling bearing and the fixed groove. The door-shaped frame slides up and down along the track of the long and narrow hole, the distance between the fixed groove of the upper end surface and the third rolling bearing is adjusted, then the relative position of the door-shaped frame and the support table is fixed, and a movable gap of the extension rod is formed, so that the jump rod or the tail end throwing rod is avoided.

The connection mode is preferably that the support table bottom plate is provided with two long holes matched with the bottom of the door-shaped frame, the bottom of the door-shaped frame can penetrate through the two long holes to move up and down, two long and narrow holes are oppositely formed in two side plates of the door-shaped frame, a middle shaft of a third rolling bearing penetrates through the long and narrow holes to be horizontally and axially fixed on the side plates of the support table, and the door-shaped frame and the support frame are screwed and fixed on the outer sides of the long and narrow holes through nuts and gaskets on the middle shaft of the third rolling bearing;

furthermore, a space for the extension rod to slide is formed between the hybrid bearing and the fixed groove, the section of the lower part of the fixed groove is concave upwards, and the section of the third rolling bearing is concave downwards, so that a space for the extension rod to move is formed.

The operating unit is "T" shape operating handle, the operating handle port cup joints with the extension rod, the three tip of operating handle is equipped with tubule installation port, thick pipe installation port and speed governing controlling means respectively, tubule installation port size matches and is equipped with the spliced eye the same with thin extension pipe tip interval and size with thin extension pipe, thick pipe installation port size matches with thick extension pipe, tubule installation port and thick pipe installation port all are equipped with the spliced eye the same with thick extension pipe tip interval and size.

The detection and cleaning equipment can be selectively provided with straight arm type speed-adjustable internal grinding machines with different specifications according to the working condition requirements; an inner grinding steel wire brush with a customized size can be selected for removing rust on the inner wall; auxiliary accessories such as cloth wheels with customized sizes and the like can be selected for cleaning stains and residues on the surface of the inner wall.

In order to cooperate portably, the power supply unit chooses for use a plurality of meters of multistage cable quick-operation joint cable to connect the installation according to user demand length, satisfies the user demand of the different degree of depth promptly, also avoids the cable overlength to drag the operation trouble that the in-process winding caused. Each part of the supporting device is inserted and can be detached.

The inner wall state of the hole can be detected through the installation of equipment such as an endoscope and the like at the working section, and the position of the area where the defect and the stain are located can be determined through the scale marks on the outer wall of the extension rod. The ingenious design of working section supporting unit, extension rod, the support unit in the extension rod hole and the support unit outside the hole is used for ensuring that the inner wall detection and cleaning equipment is consistent with the axis of the inner wall of the workpiece to be detected all the time. The supporting device is an easily-disassembled structure, and can improve the processing and detection precision in the field construction process.

The portable supporting device for the equipment for detecting and cleaning the inner walls of the blind holes and the deep holes has the following advantages:

1. the support device is convenient to disassemble, flexible to assemble and convenient to carry, and has a wide application range according to the assembly length and the support position of an actual operation scene.

2. The length of the extension rod, the angle of the support in the hole and the height of the support point outside the hole are adjusted, and the extension rod are used together to center the extension rod and the multiple axes of the working section, so that the fault generation caused by eccentric stirring is avoided, the accurate cleaning, positioning and reliability are ensured, the operation quality is ensured, and the operation efficiency is improved.

3. The portable supporting device reduces the loss of manpower, material resources and financial resources caused by the disassembly, debugging and even shutdown of in-service or large-scale equipment for the blind hole/deep hole operation of the in-service equipment.

Description of the drawings:

in order to make the object, technical scheme and beneficial effect of the utility model more clear, the utility model provides the following drawings for explanation:

FIG. 1 is an overall view of a portable support device of the inner wall inspection and cleaning apparatus of the present invention;

FIG. 2 is a view of a construction of a working section support unit;

FIG. 3 is a front view of a shim of the support unit of the working segment;

FIG. 4 is a side view of a working segment support unit shim;

FIG. 5 is a view showing the construction of an operation unit;

FIG. 6 is a view of the extension pole;

FIG. 7 is a view of extension rod attachment;

FIG. 8 is a view of the structure of the support unit in the hole of the extension rod;

figure 9 is a view of the construction of the base connector tile;

FIG. 10 is a front view of the extension pole aperture outer support unit;

fig. 11 is a side view of the extension pole aperture outer support unit.

Description of the reference numerals

I-an operation unit; 23-a tubule mounting port; 24-a heavy pipe installation port; 11-speed regulation control means;

II, extending rods; 7-a coarse extension rod; 8-thin extension rod; 9-a stop ring; 10-a plug hole;

III-an extension rod hole external support unit; 21-a third rolling bearing; 22-a fixed groove; 25-a support table; 26-a support frame; 27-slot hole; 28-door frame;

IV-support unit in the extension rod hole; 12-through slots; 13-a sliding bolt; 14-a first connecting rod; 15-a hinge bolt; 16-a second connecting rod; 17-basic connector tiles; 18-flat band; 19-a first rolling bearing;

v-a working section supporting unit; 1-wear resistant roller; 1-1 of a support rod; a second rolling bearing 1-2; 1-3 of a positioning pin; 2-a circular gasket; 3-screw holes; 4-screw rod; 5-rigid connection belt; 6-transition connecting pipe.

Detailed Description

The utility model will now be further described by way of the following examples, which are not intended to limit the scope of the utility model in any way. It will be understood by those skilled in the art that equivalent substitutions for the technical features of the present invention, or corresponding modifications, can be made within the scope of the present invention. The components and relative positions set forth in the embodiments do not limit the scope of the present invention unless specifically stated otherwise.

Example 1

As shown in figure 1, the utility model relates to a portable supporting device for equipment for detecting and cleaning inner walls of blind holes and deep holes of in-service equipment facilities. The portable supporting device comprises a power supply unit and is characterized by further comprising an operation unit I and an extension rod II which is inserted into the operation unit, wherein the part of the extension rod outside the blind hole/deep hole is connected and supported by an extension rod hole outer supporting unit III, the part of the extension rod inside the blind hole/deep hole is connected and supported by an extension rod hole inner supporting unit IV arranged at equal intervals, and the tail end of the extension rod hole inner supporting unit is connected with a working section supporting unit V.

The straight arm type speed-adjustable internal grinding machine with different specifications can be selected according to the working condition requirements for detection, cleaning and polishing; selecting an inner grinding steel wire brush with a customized size for removing rust on the inner wall; auxiliary accessories such as cloth wheels with customized sizes and the like are selected for cleaning stains and residues on the surface of the inner wall.

In order to facilitate the dismantlement and carry, the power supply unit chooses for use the quick joint cable of multistage cable, connects the installation according to user demand length, satisfies the user demand of the different degree of depth promptly, also avoids the cable overlength to drag the operating fault that the in-process winding caused.

The auxiliary internal inspection is realized by installing equipment such as an endoscope of the working section supporting unit, so that the state of the inner wall of the hole is detected, and the position of the area where the defect and the stain are located is determined by scale marks on the outer wall of the extension rod.

The working section supporting unit, the extension rod and the operation unit, the extension rod hole outer supporting unit and the extension rod hole inner supporting unit can be used for positioning the extension rod, preventing deviation and jumping rods and ensuring that the inner wall detection and cleaning equipment is consistent with the axis of the inner wall of the workpiece to be detected all the time. The supporting device is an easily-disassembled structure, and can improve the processing and detection precision in the field construction process.

For convenience of description, the structure of the supporting device of the present invention is illustrated by taking an internal grinding machine as an example.

As shown in fig. 2, 3 and 4, the working section supporting unit V selects two annular gaskets 2, is vertically positioned and installed at the head end and the tail end of the internal grinding machine, three screw holes 3 with a circumferential angle of 120 degrees are uniformly distributed on the two gaskets, and after three screws 4 axially arranged at 120 degrees are vertically fixed with the gaskets, the gaskets form two coaxial and mutually parallel end surfaces, so that large polarization stirring is avoided during the working of the internal grinding machine; three screw holes 3 uniformly distributed at 120 degrees on the gasket are respectively and vertically connected with two ends of a screw rod 4 to form two parallel end surfaces;

as shown in figure 3, 6 high-abrasion-resistance bearings 1 are uniformly and symmetrically arranged at the edges of the planes of the two gaskets at a circumferential angle of 120 degrees, and the abrasion-resistance roller consists of a supporting rod 1-1 fixed on the gasket, a second rolling bearing 1-2 connected on the supporting rod and a positioning pin 1-3 on the supporting rod. The supporting rod can be extended or contracted and is fixed through the positioning pin, and the supporting rod is used for the integral internal cutting of the internal grinding equipment on the inner wall of the small-diameter pipe in the same axle center and the radial advancing of the working section supporting unit.

The outside of the gasket is symmetrically and fixedly connected with a transition connecting pipe 6 at the end part of the extension rod in the hole through three rigid connecting belts 5 at a circumferential angle of 120 degrees. Selecting a high-strength steel pipe with phi of 25 multiplied by 2.5mm and a rigid connecting belt 5, wherein the rigid connecting belt is cut into three arc-shaped sections with the same length, width and radian by 1 section along the axial direction and at a circumferential angle of 120 degrees. One end of the rigid connecting belt is connected with the transition connecting pipe at the end part of the extension rod, and the other end of the rigid connecting belt is connected with the gasket at one side, namely, the inner grinding machine fixing equipment is effectively fixed with the extension rod. The connecting points on the gasket and the transition connecting pipe are symmetrically arranged at a circumferential angle of 120 degrees. The whole symmetry of the working section supporting unit is ensured, and the working process is stable, balanced and free of offset.

As shown in fig. 1, 5 and 6, the tail end of the extension rod II outside the hole in fig. 7 is connected with an operating handle, the extension rod II is sequentially and alternately sleeved by a thin extension rod 8 and a thick extension rod 7, and the number of sleeved connection is determined according to the depth of the hole. Two identical inserting holes 10 are arranged at the two ends of the thin extension rod 8 and the thick extension rod 7 at equal intervals and can be fixed by bolts after inserting. The socket joint of the thin extension rod 8 and the thick extension rod 7 is provided with a stop ring 9, and zero points at the stop ring are marked on the thin extension rod 8 and the thick extension rod 7. And determining the depth and the position of the operating point in the hole through the scales.

The pipe diameter selection principle is that no allowance is generated after insertion installation to cause shaking in the working process, a thick extension rod (phi 25 multiplied by 2.5mm) and a thin extension rod (phi 20 multiplied by 2.5mm) steel pipe insertion extension mode can be selected, the phi 25 multiplied by 2.5mm steel pipe single-section length 1200mm (30 mm and 70mm away from the first end and the last end are respectively punched), the phi 20 multiplied by 2.5mm steel pipe single-section length 1200mm (30 mm and 70mm away from the first end and the last end are respectively punched), and a phi 25 multiplied by 2.5mm stop ring 9 with the width of 20mm is welded at a position 80mm away from the first end and the last end; the distance between the phi 25 multiplied by 2.5mm and the phi 20 multiplied by 2.5mm steel pipe and the head end is 100mm, and the distance is used as a mark point 0 point, and the mark points are respectively marked with 0m, 0.1m and 0.2m … … 1.0.0 m, so that the accurate positioning of the detection part by the auxiliary detection equipment is ensured.

The transition connecting pipe 6 and the extension rod are also in a sleeved mode, the transition connecting pipe is phi 25 multiplied by 2.5mm, and a connecting hole which is the same as the end part of the thin extension rod is formed in the opposite end part of the connecting gasket, so that the transition connecting pipe is conveniently connected with the extension rod.

Preferably, the diameter of the transition connecting pipe is 25 multiplied by 2.5mm, the rigid connecting belt is a rigid steel pipe with the diameter of 30 multiplied by 2.5mm which is axially sliced, and the connecting part of the rigid connecting belt and the transition connecting pipe is well jointed.

As shown in fig. 5, the operating handle is of a T-shaped structure, and three end portions of the operating handle correspond to the small pipe mounting port 23, the large pipe mounting port 24, and the speed control device 11 (one end is always ensured to be axially perpendicular to the working section). Tubule installation port size just is equipped with the spliced eye the same with thin extension pipe tip interval and size with thin extension pipe matching, thick pipe installation port size matches with thick extension pipe, tubule installation port and thick pipe installation port all are equipped with the spliced eye the same with thick extension pipe tip interval and size, pass through the bolt fastening after pegging graft.

As shown in fig. 8 and 9, the extension pole hole internal support unit IV includes two base engaging plates 17 attached to the outer wall of the extension pole, and the two base engaging plates are fixed to the extension pole by means of rigid anchor ears 18 at both ends. A through groove 12 is respectively arranged at the center of the cambered surface of each basic connecting plate in the axial direction, a sliding bolt 13 is connected in each through groove in a sliding manner, and two first connecting rods 14 with equal length are symmetrically hinged at the position of each sliding bolt 13; a hinge bolt 15 is fixed outside one end of the straight line where the through groove is located of the basic connection plate, and two second connecting rods 16 with equal length are hinged at the hinge bolt; hinged at the end of the first link 14 at the full length of the second link, at the distance of the hinge bolt 1/3; a first rolling bearing 19 is fixed at the terminal end of the second connecting rod 16; the hinge joint of the first connecting rod and the second connecting rod can be the position 1/2-1/3 of the whole length of the second connecting rod from the hinge bolt 15.

The inner support unit in the extension rod hole selects a radial opposite cutting pipe with the length of 360mm phi 30 multiplied by 2.5mm as a basic connection plate 17, thereby ensuring that the inner support unit is completely attached to the extension rod phi 25 multiplied by 2.5mm after being installed; a penetrating groove 12 with the width of 5mm and the length of 200mm is processed at the center position 100mm away from the head end and is used as an inner wall limiting and adjusting track; machining a phi 8 through hole at the center position 65mm away from the head end for installing the hinge bolt 15; the working principle of the support unit in the extension rod hole is that one hinge bolt 15 is hinged with two second connecting rods 16, the sliding bolt 13 in the through groove 12 slides back and forth along a track (through groove), the two first connecting rods 14 with equal length symmetrically hinged at the sliding bolt 13 are driven, the opening and closing angle of the second connecting rods is adjusted through linkage adjustment, and then the axis positioning advancing and the section supporting are achieved through first rolling bearings 19 at the four tail ends of the second connecting rods. And a plurality of hole inner support units are arranged according to the inserting length of the extension rod and a certain distance.

As shown in fig. 8 and 9, a pair of base joint plates are attached to the outer wall of the extension pole through inner arcs and are installed through rigid hoops.

As shown in fig. 10 and 11, the extension rod hole outer supporting unit III includes a supporting frame 26, the supporting frame is four extension rods, four corners of the upper end of the supporting frame are horizontally fixed with a supporting platform 25 in a balanced manner, and the supporting platform is connected with a door-shaped frame 28 in a sliding manner. The sliding connection mode is as follows: two long holes matched with the bottoms of the door-shaped frames 28 are formed in the bottom plate of the support platform, the bottoms of the door-shaped frames can penetrate through the two long holes to move up and down respectively, two long and narrow holes 27 are formed in two side plates of the door-shaped frames oppositely, the middle shaft of the third rolling bearing 21 penetrates through the long and narrow holes 27 to be horizontally and axially fixed on the side plates of the support platform, and the door-shaped frames and the support frame are fixed by screwing up and fixing two end parts of the middle shaft of the third rolling bearing from the outer sides of the long and narrow holes in the two sides of the door-shaped frames through nuts and gaskets; a fixing groove 22 is fixed on the inner side of the top of the door-shaped frame 18 opposite to the third rolling bearing, and the extension rod moves in the area between the third rolling bearing 21 and the fixing groove 22. The height of the supporting frame 26 is adjusted to ensure that the extension rod borne by the third rolling bearing 21 is consistent with the axial center of the working section, the position of the door-shaped frame 28 is adjusted up and down, the door-shaped frame slides up and down along the track of the long and narrow hole 27, the distance between the fixed groove 22 on the upper end surface of the door-shaped frame and the third rolling bearing 21 is adjusted to form the movable gap of the extension rod, a nut and a gasket on the shaft of the third rolling bearing are adopted, the door-shaped frame is fixed by screwing up from the outer side of the long and narrow hole on the side wall of the door-shaped frame, and the extension rod is always in the gap between the rolling bearing and the fixed groove, so that the phenomenon that the skipping rod or the tail end of the extension rod gets rid of the rod is avoided.

The extension rod outside the hole is additionally provided with the supporting fixed point, so that the shaft centers of the tail end, the support section of the extension rod in the hole and the working section are consistent, the fault generation caused by eccentric stirring is avoided, and the accurate cleaning, positioning and reliability are ensured.

During the operation, now according to the needs of work, install in the working section strutting arrangement and wash good or detecting instrument, install the peephole, it is fixed with circular gasket and screw rod equipment, connect circular gasket on the transition connecting pipe again, it is fixed through spliced eye and screw rod cooperation after cup jointing transition connecting pipe and thin extension rod. The same method is adopted to alternately sleeve the thick extension rod and the thin extension rod. According to the depth of the blind hole or the deep hole, two basic connecting plates are oppositely and fixedly attached to the outer side of the extension rod at a certain interval up and down, the sliding bolt is adjusted to move along the through groove, and the linkage adjustment scale of the first connecting rod and the second connecting rod enables the first rolling bearing to be tangent to the inner side of the blind hole or the deep hole; the gap between the third rolling bearing 21 and the fixing groove 22 is adjusted and the extension bar passes through the region between the third rolling bearing 21 and the fixing groove 22 fixed above. A thin tube mounting port 23 or a thick tube mounting port 24 of the operation handle is connected according to the thickness of the extending rod at the extreme end.

Claims (10)

1. A portable supporting device of equipment for detecting and cleaning inner walls of blind holes and deep holes comprises a power supply unit and is characterized by further comprising an operating unit I and an extension rod II spliced with the operating unit, wherein the parts of the extension rod outside the blind holes and the deep holes are connected and supported by an extension rod hole outer supporting unit III, the parts of the extension rod inside the blind holes and the deep holes are connected and supported by an extension rod hole inner supporting unit IV arranged at equal intervals, the tail end inside the extension rod hole is connected with a working section supporting unit V, and the equipment for detecting and cleaning is fixed inside the working section supporting unit; the outer support unit of the extension rod hole can limit the movement of the extension rod, and the inner support unit of the extension rod hole can adjust the opening and closing angle to be matched with the inner wall of the hole.

2. The portable supporting device for the detection and cleaning equipment of the inner wall of the blind hole and the deep hole is characterized in that the extension rod II is alternatively sleeved by a thin extension rod (8) and a thick extension rod (7), two identical inserting holes (10) are arranged at two ends of the thin extension rod (8) and the thick extension rod (7) at equal intervals, the thin extension rod and the thick extension rod are fixed at the inserting holes through bolts after being inserted, and the tail end part in the extension rod hole is sleeved with a transitional connecting pipe (6).

3. The portable supporting device for the detection and cleaning equipment of the inner wall of the blind hole and the deep hole as claimed in claim 2, wherein a stop ring (9) is sleeved at the joint of the thin extension rod (8) and the thick extension rod (7), and scales are marked on the thin extension rod (8) and the thick extension rod (7) by taking the stop ring as a zero point.

4. The portable supporting device for the detection and cleaning equipment of the inner walls of the blind holes and the deep holes is characterized in that the working section supporting unit V comprises two thickened circular ring-shaped gaskets (2) and three screw rods (4) which are vertically and fixedly connected between the two thickened circular ring-shaped gaskets, and the two thickened circular ring-shaped gaskets are coaxial and are parallel to each other; the wear-resistant rollers (1) are symmetrically arranged on the edge of the circular ring of the gasket (2) at intervals of 120 degrees of circumferential angles; three rigid connecting belts (5) are symmetrically fixed on the outer side of the gasket at intervals of 120 circumferential angles, the other ends of the rigid connecting belts are uniformly and fixedly connected with the end part of a transition connecting pipe (6) sleeved on the end part of the extension rod, and the end part of one end, far away from the gasket, of the transition connecting pipe (6) is provided with plug-in holes which are equidistant and equal in diameter with the thin extension rod.

5. The portable supporting device for the equipment for detecting and cleaning the inner wall of the blind hole and the deep hole as claimed in claim 4, wherein three screw holes (3) uniformly distributed on the circular ring of the gasket at a circumferential angle of 120 degrees are respectively and vertically fixedly connected with two ends of a screw rod (4); the wear-resistant roller consists of a telescopic supporting rod (1-1) fixed at the edge of a circular ring of the gasket (2), a second rolling bearing (1-2) connected with the end part of the supporting rod and a positioning pin (1-3) of the supporting rod.

6. The portable supporting device for the inner wall detection and cleaning equipment of the blind hole and the deep hole as claimed in claim 4, wherein the three rigid connecting strips (5) are three equal arc-shaped slices which are uniformly cut along the axial direction of the high-strength steel pipe at intervals of 120 ° circumferential angle.

7. The portable supporting device for the inner wall detection and cleaning equipment of the blind hole and the deep hole is characterized in that the inner supporting unit IV in the hole of the extension rod comprises two opposite basic connecting plates (17), the inner arcs of the basic connecting plates are attached and fixed on the outer wall of the extension rod, and the two basic connecting plates are fixed with the extension rod through rigid hoops (18) at two ends; a through groove (12) is axially formed in the center of the arc surface of the basic connecting plate, a sliding bolt (13) is connected in the through groove in a sliding mode, and two first connecting rods (14) with equal length are symmetrically hinged to the sliding bolt (13); a hinge bolt (15) is fixed on the base connecting plate outside the through groove and outside one end of the through groove which is in the same straight line with the through groove, and two second connecting rods (16) with the same length are hinged at the hinge bolt; the second connecting rod is hinged with the tail end of the first connecting rod (14) at the position which is separated from the hinge bolts 1/3-1/2 along the whole length of the second connecting rod; and a first rolling bearing (19) is fixed at the terminal end of the second connecting rod (16).

8. The portable supporting device for the detection and cleaning equipment of the inner walls of the blind holes and the deep holes is characterized in that the outer supporting unit III of the hole of the extension rod comprises a supporting frame (26), the supporting frame is a telescopic rod, a supporting table (25) is fixed at the upper end of the supporting frame, a door-shaped frame (28) is connected onto the supporting table in a sliding mode, a middle shaft of a third rolling bearing (21) is horizontally fixed on two side plates of the supporting table, a fixing groove (22) is fixed on the inner side of the top of the door-shaped frame (28) opposite to the third rolling bearing, and the extension rod moves in an area between the third rolling bearing (21) and the fixing groove (22).

9. The portable supporting device for the inner wall detection and cleaning equipment of the blind hole and the deep hole as claimed in claim 8, wherein the bottom plate of the supporting platform is provided with two long holes matched with the bottom of the door-shaped frame (28), the bottom of the door-shaped frame can pass through the two long holes to move up and down, two long holes (27) are oppositely formed on two side plates of the door-shaped frame, the middle shaft of the third rolling bearing (21) passes through the long holes (27) to be horizontally and axially fixed on the side plates of the supporting platform, and the door-shaped frame and the supporting frame are screwed and fixed from the outer sides of the long holes through a nut and a gasket on the middle shaft of the third rolling bearing.

10. The portable supporting device for the detection and cleaning equipment of the inner wall of the blind hole and the deep hole as claimed in claim 1, wherein the operating unit is a T-shaped operating handle, the port of the operating handle is sleeved with the extension rod, three ends of the operating handle are respectively provided with a thin tube mounting port (23), a thick tube mounting port (24) and a speed regulation control device (11), the size of the thin tube mounting port is matched with that of the thin extension tube and is provided with a plug hole with the same interval and size as those of the thin extension tube, the size of the thick tube mounting port is matched with that of the thick extension tube, and the thin tube mounting port and the thick tube mounting port are both provided with plug holes with the same interval and size as those of the end of the thick extension tube.

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