CN117532554A - Wall surface counter bore nut construction tool and method supporting remote construction - Google Patents

Abstract

The invention provides a wall surface counter bore nut construction tool and a method for supporting remote construction, wherein the construction tool comprises the following components: the combined wrench comprises a main shaft, a limit screw mounting hole is formed in the side wall of the main shaft, a flange is welded at the tail end of the main shaft, a plurality of screw holes are formed in the flange, a sleeve assembly is sleeved at the front end of the main shaft, a sliding groove is formed in the side wall of the sleeve assembly and aligned with the limit screw mounting hole on the main shaft, a limit screw is arranged in the limit screw mounting hole and can slide in the sliding groove, two symmetrically distributed groove key protrusions are formed in the front end of the sleeve assembly, a spring is sleeved on the main shaft, the front end of the spring abuts against the rear end of the sleeve assembly, and the rear end of the spring abuts against the flange. The construction tool is simple in structure and convenient to operate, can realize automatic installation and construction of the counter bore nut, and is high in installation efficiency.

Description

Wall surface counter bore nut construction tool and method supporting remote construction

Technical Field

The invention relates to the technical field of construction tools, in particular to a wall surface counter bore nut construction tool and method supporting remote construction.

Background

At present, an object is fixed on a wall by using a screw and is generally screwed by using an expansion colloidal particle, an expansion bolt and the like, the remote construction is required to support full mechanical construction, the colloidal particle can be placed by using a mechanical arm, the screw can be constructed by using an electric screwdriver, the mechanical strength of the expansion colloidal particle is lower, screw threads are directly contacted with the colloidal particle, the screw is worn in and out for multiple times, and the colloidal particle is heated and softened to cause fixation failure under high-temperature environments such as fire disaster and the like, so that the application range is narrow. The expansion bolt has the advantages of higher mechanical strength and no influence of use environment, but no corresponding construction tool supports fully mechanized construction at present.

The expansion bolt generally comprises a counter bore nut and a bolt, and the bolt is screwed into the counter bore nut, so that the counter bore nut expands outwards, and the purpose of expanding is achieved. The structure of current counter bore nut is as shown in fig. 1, fig. 2 and fig. 3, counter bore nut 200 includes inflation cover 201, round nut 202, internal and external thread silk cover 203 and wedge core 205, round nut 202 integrated into one piece sets up the top at inflation cover 201, the cylindrical top of wedge core 205 inserts to the bottom of internal and external thread silk cover 203, the wedge bottom of wedge core 205 runs through round nut 202 after inserting in the wedge centre bore that inflation cover 201 center set up, pass through threaded connection between internal and external thread silk cover 203 and the round nut 202, the top of internal and external thread silk cover 203 is provided with keyway 204, a plurality of bar grooves 2011 that are circumference array distribution with inflation cover body centre of a circle as the center have been seted up on the inflation cover 201, be provided with inwards sunken V hole 2012 between the adjacent bar groove 2011. In actual construction, as shown in fig. 4, the expansion sleeve 201 and the round nut 202 are partially inserted into the counterbore 500 formed in the wall 400, then the internal and external thread sleeves 203 are screwed by using a construction tool through the key grooves 204, the internal and external thread sleeves 203 push the wedge-shaped core 205 to continuously extend into the wedge-shaped center hole formed in the center of the expansion sleeve 201 under the cooperation of the round nut 202, and the wedge-shaped core 205 outwardly expands the wedge-shaped center hole formed in the center of the expansion sleeve 201 in the continuous extending process, so that the expansion sleeve 201 is pushed to outwardly expand, and the purpose of expanding the counterbore 500 is achieved. The conventional construction tool generally employs an iron bar inserted into a key slot 204 provided at the top of the female and male screw sleeve 203, and then rotates the iron bar. The iron bar has a simple structure and is easy to obtain, but the screwing efficiency is low, the operation is inconvenient, and the automatic construction cannot be realized, so that improvement is needed.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the wall surface counter bore nut construction tool and method for supporting remote construction, the construction tool has a simple structure, is convenient to operate, can realize automatic installation construction of the counter bore nut, and has high installation efficiency.

In order to achieve the technical scheme, the invention provides a wall surface counter bore nut construction tool supporting remote construction, which comprises the following components: the combined wrench is connected with the electric screwdriver through the conversion connector and comprises a main shaft, a limit screw mounting hole is formed in the side wall of the main shaft, a flange is welded at the tail end of the main shaft, a plurality of screw holes are formed in the flange, a sleeve assembly is sleeved at the front end of the main shaft, a sliding groove is formed in the side wall of the sleeve assembly and aligned with the limit screw mounting hole in the main shaft, limit screws are mounted in the limit screw mounting hole and can slide in the sliding groove, two symmetrically distributed groove key protrusions are formed in the front end of the sleeve assembly, a spring is sleeved on the main shaft, the front end of the spring abuts against the rear end of the sleeve assembly, and the rear end of the spring abuts against the flange; the shifting lever assembly comprises a shifting fork mounting seat, a shifting fork is arranged at the front end of the shifting fork mounting seat, the shifting fork is connected with the sleeve assembly, a telescopic inner rod at the front end of the movable telescopic rod is fixedly connected with the shifting fork mounting seat, and the rear end of the movable telescopic rod is fixed on the outer wall of the electric screwdriver.

In the technical scheme, when the tool is required to be used for grabbing and locking the counter bore nut, the movable telescopic rod in the deflector rod assembly is used for driving the shifting fork to pull the sleeve assembly backwards, the limiting screw and the front end of the sliding groove arranged on the sleeve assembly are used for limiting the sleeve assembly, at the moment, the sleeve assembly is in a pulled-up state, the main shaft is exposed out of the sleeve assembly, then the main shaft is inserted into the counter bore nut, then the movable telescopic rod is used for driving the shifting fork to push the sleeve assembly forwards, so that the limiting screw moves forwards in the sliding groove, under the action of the elasticity of the spring, the groove key bulge arranged at the front end of the sleeve assembly is inserted into the key groove arranged at the top of the counter bore nut, the counter bore nut and the tool are locked into a whole, then the electric screwdriver drives the combined wrench to rotate, the combined wrench is used for driving the inner and outer thread sleeve through connection between the groove key bulge and the key groove, the inner and outer thread sleeve is used for pushing the wedge-shaped central hole arranged in the wedge-shaped expansion sleeve center continuously under the cooperation with the round nut, and the wedge-shaped core is pushed outwards in the wedge-shaped central hole arranged in the wedge-shaped central hole continuously in the expansion sleeve, and the wedge-shaped core is pushed outwards under the continuous process, so that the expansion is outwards expanded, and the counter bore is tightly expanded. When the tool is required to be separated from the counter bore nut, the sleeve assembly is pulled backwards only by driving the shifting fork through the movable telescopic rod in the shifting rod assembly, the groove key bulge at the front end of the sleeve assembly is pulled out of the key slot in the counter bore nut, and then the main shaft is reversely screwed by the electric screwdriver, so that the main shaft is screwed out of the counter bore nut, and the operation is very convenient.

Preferably, the electric screwdriver comprises a screwdriver body, a square key joint is arranged at the front end of the screwdriver body, a mounting screw hole is formed in the outer wall of the top of the screwdriver body, and the rear end of the movable telescopic rod is fixed on the outer wall of the top of the screwdriver body through a screw. When in actual work, the screwdriver body drives the square key joint to rotate, and the combined wrench is driven to integrally rotate through the rotation of the square key joint.

Preferably, the adapter comprises a connector body, a connecting pit is arranged at the rear end side of the connector body, the connecting pit is matched with a square key connector arranged at the front end of the screwdriver body, a butt joint screw hole matched with a screw hole formed in a flange of the combined wrench is formed in the front end of the connector body, and the screw hole formed in the flange is aligned with the butt joint screw hole formed in the front end of the connector body and then connected through a screw. In actual operation, stable connection between the electric screwdriver and the combined wrench can be realized through the adapter.

Preferably, the front end of the main shaft is provided with threads, so that the main shaft is conveniently in butt joint with an inner and outer thread sleeve in the counter bore nut.

Preferably, the movable telescopic rod is a pneumatic telescopic rod or an electric telescopic rod, so that pneumatic or electric control of the movable telescopic rod is realized.

The invention also provides a construction method of the wall surface counter bore nut supporting remote construction, which comprises the following steps:

s1, aligning an expansion sleeve and a round nut in a counter bore nut with a counter bore formed in a wall body, and inserting the expansion sleeve and the round nut into the counter bore until the round nut and the counter bore form a plane;

s2, driving a shifting fork to pull the sleeve assembly backwards through a movable telescopic rod in the shifting rod assembly, so that the main shaft is exposed out of the sleeve assembly;

s3, inserting the main shaft into an internal and external thread sleeve in the counter bore nut;

s4, the movable telescopic rod drives the shifting fork to push the sleeve assembly forward, and under the action of the elasticity of the spring, the groove key bulge arranged at the front end of the sleeve assembly is inserted into the key groove arranged at the top of the internal and external thread sleeve, so that the counter bore nut and the construction tool are locked into a whole;

s5, driving the combined wrench to rotate through an electric screwdriver, screwing an inner and outer thread sleeve through connection between a groove key bulge and a key groove, pushing the wedge-shaped core to continuously go deep into an expansion sleeve through the inner and outer thread sleeve under the cooperation of the inner and outer thread sleeve and a round nut, and enabling a V pit arranged on the expansion sleeve to be extruded by the wedge-shaped core to generate elastic deformation so as to be tightly attached to the inner wall of a counter bore, so that a strong tension is generated to fasten the counter bore nut in the counter bore;

s6, driving a shifting fork to pull the sleeve assembly backwards through a movable telescopic rod in the shifting rod assembly, and pulling out a groove key bulge at the front end of the sleeve assembly from a key groove in the counter bore nut;

and S7, reversely screwing the main shaft through the electric screwdriver, screwing the main shaft out of the internal and external thread sleeve, and separating the construction tool from the counter bore nut.

The wall surface counter bore nut construction tool and method for supporting remote construction provided by the invention have the beneficial effects that: the wall surface counter bore nut construction tool supporting remote construction is ingenious in design, simple in structure and convenient to operate, automatic installation and construction of the counter bore nut can be achieved, and the installation efficiency is high. When the tool is used for grabbing and locking the counter bore nut, firstly, the sleeve assembly is pulled backwards through the movable telescopic rod driving shifting fork in the shifting rod assembly, the sleeve assembly is limited through the limiting screw and the front end of the sliding groove arranged on the sleeve assembly, at the moment, the sleeve assembly is in a pulled-up state, the main shaft is exposed out of the sleeve assembly, then the main shaft is inserted into the counter bore nut, then the movable telescopic rod driving shifting fork pushes the sleeve assembly forwards, the limiting screw moves in the sliding groove, under the elastic force of the spring, the sleeve assembly moves forwards, the groove key bulge arranged at the front end of the sleeve assembly is inserted into the key groove arranged at the top of the counter bore nut, the counter bore nut and the tool are locked into a whole, then the electric screwdriver drives the combined wrench to rotate, the combined wrench drives the inner and outer threaded sleeves through the connection between the groove key bulge and the key groove, the inner and outer threaded sleeves push the wedge core to continuously extend into the wedge-shaped center hole arranged in the center of the wedge-shaped center hole in the center of the expansion sleeve in the continuous expansion process, and the wedge-shaped core is pushed outwards to expand the expansion sleeve in the continuous expansion process, and the purpose of expanding the expansion sleeve is achieved. When the tool is required to be separated from the counter bore nut, the sleeve assembly is pulled backwards only by driving the shifting fork through the movable telescopic rod in the shifting rod assembly, the groove key bulge at the front end of the sleeve assembly is pulled out of the key slot in the counter bore nut, and then the main shaft is reversely screwed by the electric screwdriver, so that the main shaft is screwed out of the counter bore nut, and the operation is very convenient.

Drawings

Fig. 1 is a schematic perspective view of a counter bore nut.

Fig. 2 is a perspective exploded view of a counter bore nut.

Fig. 3 is a schematic perspective view of an expansion shell in a counter bore nut.

FIG. 4 is a flow chart of installation work of a counter bore nut.

FIG. 5 is a schematic perspective view of the sleeve assembly of the present invention when not pulled up.

Fig. 6 is a schematic perspective view of the sleeve assembly of the present invention when pulled up.

Fig. 7 is an exploded perspective view of the present invention.

FIG. 8 is a schematic perspective view of a lever assembly according to the present invention.

Fig. 9 is a schematic perspective view of a combination wrench according to the present invention.

Fig. 10 is an exploded perspective view of the combination wrench according to the present invention.

Fig. 11 is a rear perspective view of the adapter of the present invention.

Fig. 12 is a front view of the perspective structure of the adapter of the present invention.

Fig. 13 is a schematic perspective view of an electric screwdriver according to the present invention.

FIG. 14 is a schematic view of the present invention docked with a counter bore nut and a robotic arm.

FIG. 15 is a schematic view of the process of the present invention when in use in interfacing with a counter bore nut.

FIG. 16 is a schematic view of the process of the present invention as it is being used with the counter bore nut separated.

In the figure: 1. a deflector rod assembly; 11. a telescopic inner rod; 12. a movable telescopic rod; 13. a shifting fork mounting seat; 14. a shifting fork; 2. a combination wrench; 21. a main shaft; 22. a sleeve assembly; 23. a spring; 24. a flange; 25. a limit screw; 26. a sliding groove; 27. a groove key protrusion; 28. a limit screw mounting hole; 3. a conversion joint; 31. a joint body; 32. connecting with a sinking pit; 33. a butt joint screw hole; 4. an electric screwdriver; 41. a screwdriver body; 42. a square key main shaft; 43. installing a screw hole; 100. a construction tool; 200. a counter bore nut; 201. an expansion sleeve; 2011. a bar-shaped groove; 2012. v pit; 202. a round nut; 203. an internal and external thread sleeve; 204. a key slot; 205. a wedge-shaped core; 300. a mechanical arm; 400. a wall body; 500. and (5) countersinking.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art without making any inventive effort are within the scope of the present invention.

Example 1: a wall surface counter bore nut construction tool supporting remote construction.

Referring to fig. 1 to 14, a wall face counter bore nut construction tool supporting remote construction, comprising: the combined wrench 2 is connected with the electric screwdriver 4 through the conversion joint 3.

The combined wrench 2 comprises a main shaft 21, the front end of the main shaft 21 is provided with threads which are convenient to be in butt joint with an internal thread sleeve 203 and an external thread sleeve 203 in a counter bore nut 200, the side wall of the main shaft 21 is provided with limit screw mounting holes, the tail end of the main shaft 21 is welded with a flange 24, four screw holes which are distributed in a circumferential array by taking the center of the flange 24 as the circle center are arranged on the flange 24, the front end of the main shaft 21 is sleeved with a sleeve assembly 22, the side wall of the sleeve assembly 22 is provided with a sliding groove 26, the sliding groove 26 is aligned with a limit screw mounting hole 28 on the main shaft 21, a limit screw 25 is arranged in the limit screw mounting hole 28 and can slide in the sliding groove 26, the front end of the sleeve assembly 22 is provided with two symmetrically distributed groove key bulges 27, the groove key bulges 27 are used for being in butt joint with key grooves 204 arranged at the top of the internal thread sleeve 203 and the external thread sleeve 200, the spring 23 is sleeved on the main shaft 21, the front end of the spring 23 is propped against the rear end of the sleeve assembly 22, and the rear end of the spring 23 is propped against the flange 24. In actual operation, the spring 23 plays a role in automatic resetting.

The shifting lever assembly 1 comprises a shifting fork mounting seat 13, a shifting fork 14 is arranged at the front end of the shifting fork mounting seat 13, the shifting fork 14 is connected with a sleeve assembly 22, a telescopic inner rod 11 at the front end of a movable telescopic rod 12 is fixedly connected with the shifting fork mounting seat 13, and the rear end of the movable telescopic rod 12 is fixed on the outer wall of the electric screwdriver 4. The movable telescopic rod 12 is a pneumatic telescopic rod or an electric telescopic rod, so that pneumatic or electric control of the movable telescopic rod is realized. In actual operation, the movable telescopic rod 12 can drive the telescopic inner rod 11 to move forwards and backwards, and then can drive the shifting fork mounting seat 13 and the shifting fork 14 to move forwards and backwards, and the shifting fork 14 can drive the sleeve assembly 22 to move forwards and backwards.

The electric screwdriver 4 comprises a screwdriver body 41, a square key joint 42 is arranged at the front end of the screwdriver body 41, a mounting screw hole 43 is formed in the outer wall of the top of the screwdriver body 41, and the rear end of the movable telescopic rod 12 is fixed on the outer wall of the top of the screwdriver body 41 by penetrating the mounting screw hole 43 through a screw. In actual operation, the screwdriver body 41 drives the square key joint 42 to rotate, and the combined wrench 2 is driven to integrally rotate by the rotation of the square key joint 42.

The adapter 3 comprises a connector body 31, a connecting pit 32 is arranged at the rear end side of the connector body 31, the connecting pit 32 is matched with a square key connector 42 arranged at the front end of a screwdriver body 41, a butt joint screw hole 33 matched with a screw hole formed in a flange 24 of the combined wrench 2 is formed in the front end of the connector body 31, and the screw hole formed in the flange 24 is aligned with the butt joint screw hole 33 formed in the front end of the connector body 31 and then connected through a screw. In actual operation, the electric screwdriver 4 and the combined wrench 2 can be stably connected through the adapter 3.

The wall surface counter bore nut construction tool supporting remote construction is ingenious in design, simple in structure and convenient to operate, automatic installation and construction of the counter bore nut 200 can be achieved, and the installation efficiency is high. When the tool is used for grabbing and locking the counter bore nut 200, firstly, the shifting fork 14 is driven by the movable telescopic rod 12 in the shifting rod assembly 1 to pull the sleeve assembly 22 backwards, the sleeve assembly 22 is limited by the limiting screw 25 and the front end of the sliding groove 26 arranged on the sleeve assembly 22, at the moment, the sleeve assembly 22 is in a pulled-up state, the main shaft 21 is exposed out of the sleeve assembly 22, then the main shaft 21 is inserted into the internal and external thread wire sleeve 203 of the counter bore nut 200, then the sleeve assembly 22 is pushed forwards by the movable telescopic rod 12 by the shifting fork 14, so that the limiting screw 25 moves in the sliding groove 26, the sleeve assembly 22 moves forwards under the elastic force of the spring 23, the groove key bulge 27 arranged at the front end of the sleeve assembly 22 is inserted into the key groove 204 arranged at the top of the counter bore nut 200, the counter bore nut 200 and the tool are locked into a whole, then the electric screwdriver 4 drives the combined wrench 2 to rotate, the combined wrench 2 is connected with the key groove bulge 27 and the key groove 204 to screw the internal and external thread wire sleeve 203, the internal and external thread wire sleeve 203 is matched with the round nut 202 to push the wedge core 205 to continuously extend into the wedge center hole arranged at the center of the expansion sleeve 201, and the wedge core 205 is used for outwards expanding the wedge center hole arranged at the center of the expansion sleeve 201 in the continuous extending process, so that the expansion sleeve 201 is pushed to outwards expand, and the purpose of expanding the counter bore 500 is achieved. When the tool is required to be separated from the counter bore nut 200, the shifting fork 14 is driven by the movable telescopic rod 12 in the shifting rod assembly 1 to pull the sleeve assembly 22 backwards, the groove key bulge 27 at the front end of the sleeve assembly 22 is pulled out of the key slot 204 in the counter bore nut 200, and then the main shaft 21 is reversely screwed by the electric screwdriver 4 to be screwed out of the counter bore nut 200, so that the operation is very convenient.

Referring to fig. 14, the construction tool can be mounted on a remote control mechanical arm 300 with a camera, the mechanical arm 300 is used for removing the locking counter bore nut 200 at the corresponding position of the cartridge clip, then the counter bore nut 200 is pressed into the counter bore 500 on the wall 400 through the observation of the camera, the construction tool 100 is started to fasten the counter bore nut 200 in the counter bore 500 and then is withdrawn, and thus, one construction cycle is completed, and the full-automatic operation of the construction tool can be realized.

Example 2: a wall surface counter bore nut construction method supporting remote construction.

Referring to fig. 1 to 16, a construction method of a wall surface counter bore nut supporting remote construction specifically includes the following steps:

s1, aligning an expansion sleeve 201 and a round nut 202 in a counter bore nut 200 with a counter bore 500 formed in a wall 400, and inserting the expansion sleeve 201 and the round nut 202 into the counter bore 500 until the round nut 202 and the counter bore 500 form a plane;

s2, driving the shifting fork 14 to pull the sleeve assembly 22 backwards through the movable telescopic rod 12 in the shifting rod assembly 1, so that the main shaft 21 is exposed out of the sleeve assembly 22;

s3, inserting the main shaft 21 into the internal and external thread sleeve 203 in the counter bore nut 200;

s4, the movable telescopic rod 12 drives the shifting fork 14 to push the sleeve assembly 22 forwards, and under the action of the elasticity of the spring 23, the groove key bulge 27 arranged at the front end of the sleeve assembly 22 is inserted into the key groove 204 arranged at the top of the internal and external thread sleeve 203, so that the counter bore nut 200 and the construction tool are locked into a whole;

s5, driving the combined wrench 2 to rotate through the electric screwdriver 4, screwing the internal and external thread wire sleeve 203 through the connection between the groove key bulge 27 and the key groove 204, and pushing the wedge-shaped core 205 to continuously extend into the expansion sleeve 201 through the internal and external thread wire sleeve 203 under the cooperation of the round nut 202, wherein a V pit 2012 arranged on the expansion sleeve 201 is extruded by the wedge-shaped core 205 to generate elastic deformation to be tightly attached to the inner wall of the counter bore 500, so that strong tension is generated to fasten the counter bore nut 200 in the counter bore 500;

s6, driving the shifting fork 14 to pull the sleeve assembly 22 backwards through the movable telescopic rod 12 in the shifting rod assembly 1, and pulling out the groove key bulge 27 at the front end of the sleeve assembly 22 from the key groove 204 in the counter bore nut 200;

s7, reversely screwing the main shaft 21 through the electric screwdriver 4, screwing the main shaft 21 out of the internal and external thread sleeve 203, and separating the construction tool from the counter bore nut.

The construction method for the wall surface counter bore nut supporting remote construction is convenient to operate, supports full-automatic operation, and greatly improves construction efficiency.

The foregoing is a preferred embodiment of the present invention, but the present invention should not be limited to the embodiment and the disclosure of the drawings, so that the equivalents and modifications can be made without departing from the spirit of the disclosure.

Claims (6)

1. A wall face counter bore nut construction tool supporting remote construction, which is characterized by comprising: the combined wrench is connected with the electric screwdriver through the conversion connector and comprises a main shaft, a limit screw mounting hole is formed in the side wall of the main shaft, a flange is welded at the tail end of the main shaft, a plurality of screw holes are formed in the flange, a sleeve assembly is sleeved at the front end of the main shaft, a sliding groove is formed in the side wall of the sleeve assembly and aligned with the limit screw mounting hole in the main shaft, limit screws are mounted in the limit screw mounting hole and can slide in the sliding groove, two symmetrically distributed groove key protrusions are formed in the front end of the sleeve assembly, a spring is sleeved on the main shaft, the front end of the spring abuts against the rear end of the sleeve assembly, and the rear end of the spring abuts against the flange; the shifting lever assembly comprises a shifting fork mounting seat, a shifting fork is arranged at the front end of the shifting fork mounting seat, the shifting fork is connected with the sleeve assembly, a telescopic inner rod at the front end of the movable telescopic rod is fixedly connected with the shifting fork mounting seat, and the rear end of the movable telescopic rod is fixed on the outer wall of the electric screwdriver.

2. The wall face counter bore nut construction tool supporting remote construction of claim 1, wherein: the electric screwdriver comprises a screwdriver body, a square key joint is arranged at the front end of the screwdriver body, a mounting screw hole is formed in the outer wall of the top of the screwdriver body, and the rear end of the movable telescopic rod is fixed on the outer wall of the top of the screwdriver body through a screw.

3. The wall face counter bore nut construction tool supporting remote construction of claim 2, wherein: the adapter comprises a connector body, a connecting pit is arranged at the rear end side of the connector body, the connecting pit is matched with a square key connector arranged at the front end of the screwdriver body, a butt joint screw hole matched with a screw hole formed in a flange of the combined wrench is formed in the front end of the connector body, and the screw hole formed in the flange is aligned with the butt joint screw hole formed in the front end of the connector body and then connected through a screw.

4. The wall face counter bore nut construction tool supporting remote construction of claim 1, wherein: the front end of the main shaft is provided with threads.

5. The wall face counter bore nut construction tool supporting remote construction of claim 1, wherein: the movable telescopic rod is a pneumatic telescopic rod or an electric telescopic rod.

6. A wall surface counter bore nut construction method supporting remote construction is characterized by comprising the following steps:

s1, aligning an expansion sleeve and a round nut in a counter bore nut with a counter bore formed in a wall body, and inserting the expansion sleeve and the round nut into the counter bore until the round nut and the counter bore form a plane;

s2, driving a shifting fork to pull the sleeve assembly backwards through a movable telescopic rod in the shifting rod assembly, so that the main shaft is exposed out of the sleeve assembly;

s3, inserting the main shaft into an internal and external thread sleeve in the counter bore nut;

s4, the movable telescopic rod drives the shifting fork to push the sleeve assembly forward, and under the action of the elasticity of the spring, the groove key bulge arranged at the front end of the sleeve assembly is inserted into the key groove arranged at the top of the internal and external thread sleeve, so that the counter bore nut and the construction tool are locked into a whole;

s5, driving the combined wrench to rotate through an electric screwdriver, screwing an inner and outer thread sleeve through connection between a groove key bulge and a key groove, pushing the wedge-shaped core to continuously go deep into an expansion sleeve through the inner and outer thread sleeve under the cooperation of the inner and outer thread sleeve and a round nut, and enabling a V pit arranged on the expansion sleeve to be extruded by the wedge-shaped core to generate elastic deformation so as to be tightly attached to the inner wall of a counter bore, so that a strong tension is generated to fasten the counter bore nut in the counter bore;

s6, driving a shifting fork to pull the sleeve assembly backwards through a movable telescopic rod in the shifting rod assembly, and pulling out a groove key bulge at the front end of the sleeve assembly from a key groove in the counter bore nut;

and S7, reversely screwing the main shaft through the electric screwdriver, screwing the main shaft out of the internal and external thread sleeve, and separating the construction tool from the counter bore nut.