125 results about "Hole opener" patented technology

The invention relates to a powerful tapper, and relates to the technical field of tappers, the powerful tapper comprises a connecting rod and a drill bit fixed at the end of the connecting rod, a containing sinking groove is formed in the side face, away from the connecting rod, of the drill bit, and a positioning drill is fixedly arranged in the middle of the bottom side of the containing sinking groove; a plurality of first grinding drills are fixedly arranged on the bottom side of the containing sinking groove in a staggered mode, a plurality of second grinding drills are fixedly arranged on the side face, away from the connecting rod, of the end in a staggered mode, and a plurality of chip grooves communicating with the containing sinking groove are formed in the periphery of the drill bit in the spiral direction. In the application, when the tapper is applied, the end part of the connecting rod is mounted on driving equipment, then the corresponding driving equipment is started, the connecting rod and the drill bit are driven to rotate synchronously, the corresponding part of the wall surface is ground and broken through the positioning drill, the first grinding drill and the second grinding drill, and generated chips are discharged through the accommodating sinking groove and the chip discharging groove; and the device is suitable for trepanning of wall surfaces with different thicknesses, and the application range is wide.

Disclosed in the present invention is a novel hole saw extension rod, comprising a rotating shank assembly and a trepanning assembly, wherein the rotating shank assembly comprises a drill bit limiting sleeve and a limiting mechanism; the trepanning assembly comprises a rapid adapter and a cylindrical hole saw; the limiting mechanism comprises a limiting steel ball, an upper cover and a sliding sleeve; a first accommodating cavity fitted with the lower end of the rapid adapter is formed in the upper end of the drill bit limiting sleeve; an ejection mechanism is arranged in the first accommodating cavity; the upper end of the rapid adapter and the cylindrical hole saw are threadedly connected into a whole; a first limiting hole penetrating through the side wall of the first accommodating cavity is formed in the drill bit limiting sleeve, the limiting steel ball is fitted and installed in the first limiting hole, a first positioning groove is formed in the lower end of the rapid adapter, and the limiting steel ball matches with the first positioning groove for limiting. The rapid adapter and the cylindrical hole saw of the present invention can be easily pulled out downwards together, thereby achieving the purpose of rapid waste removal or rapid replacement of the cylindrical hole saw.

The utility model discloses a tapper connecting rod which comprises a rotating handle assembly and a tapping assembly, the rotating handle assembly comprises a drill bit limiting sleeve and a limiting mechanism, the tapping assembly comprises a quick conversion head, a positioning drill bit and a cylindrical tapper, and the limiting mechanism comprises a limiting steel ball and a sliding sleeve; a first limiting hole is formed in the drill bit limiting sleeve, the limiting steel ball is installed in the first limiting hole in a matched mode, a first positioning groove is formed in the lower end of the quick conversion head, and the limiting steel ball and the first positioning groove are matched for limiting. A first limiting part and a second limiting part are arranged on the inner side wall of the sliding sleeve, and the sliding sleeve moves in the axial direction of the drill bit limiting sleeve, so that the first limiting part and the second limiting part are matched with the limiting steel balls correspondingly, and the drill bit limiting sleeve and the quick conversion head are locked or unlocked; the positioning drill bit and the cylindrical tapper can be easily detached and pulled out, and the purpose of rapidly withdrawing waste materials or rapidly replacing the cylindrical tapper is achieved.

The utility model discloses a tapper connecting rod which comprises a rotating handle assembly and a tapping assembly, the rotating handle assembly comprises a drill bit limiting sleeve and a limiting mechanism, and the tapping assembly comprises a hexagonal center drill and a cylindrical tapper. The limiting mechanism comprises a limiting steel ball and a sliding sleeve; the drill bit limiting sleeve and the cylindrical tapper are detachably connected to form a whole. A limiting hole is formed in the drill bit limiting sleeve; the limiting steel balls are installed in the limiting holes in a matched mode. A positioning groove is formed in the hexagonal center drill. The limiting steel balls are matched with the positioning grooves for limiting; a limiting part is arranged on the inner side wall of the sliding sleeve; the drill bit limiting sleeve is movably sleeved with the sliding sleeve in the axial direction of the drill bit limiting sleeve. And the sliding sleeve axially moves along the drill bit limiting sleeve, so that the limiting part is matched with or separated from the limiting steel ball, and a locking state and an unlocking state are formed, so that the drill bit limiting sleeve and the hexagonal center drill are locked or unlocked. The purpose of rapidly returning waste materials or rapidly replacing the cylindrical tapper is achieved.

The utility model discloses a woodworking tapper capable of removing chips smoothly, which relates to the technical field of chip removal of tappers, and comprises a cylindrical cover body and a connecting shaft, a drill bit is arranged below the connecting shaft, a piston plate and a micro hollow baffle are sequentially arranged on the inner side of the cylindrical cover body from top to bottom, and the micro hollow baffle is parallel to the piston plate. Guide rods are annularly and evenly arranged above the piston plate, a sliding sleeve is fixedly installed in the middle of the piston plate, a closed spiral groove is formed in the inner side face of the sliding sleeve, a sliding block is arranged on the drill bit and slidably connected into the spiral groove, a reset spring is connected to the outer side of the drill bit in a sleeving mode, and the reset spring and the micro-hollowed-out baffle are fixedly installed. Ventilation holes are annularly formed in the outer side of the cylindrical cover body. According to the scheme, chip removal of the woodworking tapper can be facilitated, the drilling position of the woodworking tapper can be automatically cooled in the drilling machining process of the woodworking tapper through starting of the electric drill, and the use effect of the woodworking tapper is further guaranteed.

The present invention provides a lifting device for horizontal members that allows for lifting and unlifting of horizontal members by attaching and detaching the lifting hooks to the horizontal member, which has a main surface without lifting fittings arranged horizontally. [Solution] The horizontal member lifting device 10 of the present invention comprises a lifting body 12 that can be lifted and transported by a crane, A hole saw 26 is attached to the lifting body 12 and extends toward a horizontally positioned horizontal member, on which one main surface of the lifting body sits, to drill a hole in the one main surface. The invention is characterized by having a locking mechanism 30 positioned around the rotation axis of the hole saw 26, in which, after drilling with the hole saw 26, the locking body 32, which is reduced in diameter toward the axis of the insertion hole as the hole saw 26 extends, is inserted from one main surface, and after penetration, the locking body 32 expands in diameter and locks onto the other main surface.

The guide sleeve tapper comprises a fixed sleeve, a sliding piece, a rotating piece and an elastic piece, the fixed sleeve is provided with a guide hole in sliding fit with the sliding piece, the sliding piece is provided with a first shaft hole with the axis parallel to the axis of the guide hole, the rotating piece is in rotating fit with the first shaft hole and slides synchronously with the sliding piece, and the elastic piece is arranged in the guide hole. The rotating piece is provided with a second shaft hole coaxial with the first shaft hole and a driven meshing part capable of being matched with a drill bit or an electric drill spindle, so that the rotating piece can synchronously rotate along with the drill bit, and the elastic piece can apply elastic force opposite to the feeding direction of the drill bit to the sliding piece. When the guide sleeve tapper or the jig is used for tapping, the drill bit is not in contact with the jig, so that the jig is not affected by abrasion during rotation of the drill bit, and when the drill bit moves downwards, the elastic piece can provide upward counter-acting force, so that the downward moving speed of the drill bit is better controlled, and the drilling precision is controlled.

The utility model discloses a tapper which comprises a tapping cover, a connecting shaft is installed in the middle of the top end of the tapping cover, a drill bit is fixed to the bottom end of the tapping cover, a reset mechanism is arranged in the tapping cover, and the reset mechanism comprises a supporting frame corresponding to the axis of the tapping cover. The punching device has the beneficial effects that by arranging the reset mechanism and the extrusion mechanism, in the punching process, a cut plate is located in the punching cover and extrudes a supporting frame in the reset mechanism, the supporting frame is stressed to drive a guide rod to move upwards along the punching cover, a reset spring is extruded in the moving process, and the extrusion mechanism is made to contract; when a cut plate is clamped in the trepanning cover, the cut plate can be pushed out through resilience force of the reset spring and the extrusion mechanism, and when the cut plate is too tightly connected with the trepanning cover, a worker only needs to press the guide rod, so that the guide rod drives the supporting frame to downwards extrude the cut plate, and the cut plate can be separated from the trepanning cover. The use is convenient.

This utility model relates to the field of hole saw technology, and more particularly to a hole saw with self-cleaning function. It includes a hole saw body, a guide rod, a push plate, a return spring, and a sliding mechanism. At least three guide holes are evenly distributed on the upper surface of the hole saw body. A guide rod is slidably disposed within each guide hole, with its direction parallel to the axial direction of the hole saw body. The bottom end of the guide rod is connected to a push plate, which is located within the hole saw body. A return spring is wound around the outside of the guide rod. The push plate can move under the action of the return spring to push out and clean debris from within the hole saw body. After the hole is drilled, the workpiece debris detaches from the workpiece. At this time, the push plate, under the action of the return spring, drives the contact plate and sliding plate to move, pushing the workpiece debris out of the hole saw body. This achieves a self-cleaning function, making the hole drilling operation simpler and faster.

The utility model provides a drilling device for pipeline connection, and particularly relates to the technical field of pipeline connection, the drilling device comprises a fixed seat, the top of the fixed seat is provided with a through groove, the top of the fixed seat is fixedly connected with a support frame, one side of the support frame is provided with a first limiting groove, the inner side of the first limiting groove is rotatably connected with a first screw rod, and the inner side of the first limiting groove is rotatably connected with a second screw rod. The drilling device comprises a first screw rod, one end of the first screw rod is provided with a first motor, the outer side of the first screw rod is in threaded connection with a connecting block, one side of the connecting block is fixedly connected with a second motor, and one end of an output shaft of the second motor is fixedly connected with a tapper. The first lead screw is driven to rotate, the second motor moves downwards, the tapper is driven by the second motor to rotate, and therefore the outer wall of the port of the metal pipeline is tapped.

The utility model relates to an outdoor gas pipeline deflation device which comprises a sealing sleeve, a drilling mechanism and a hoop used for being fixed to a gas pipeline, a connector is arranged on the hoop, and one end of the sealing sleeve is connected with the connector. The drilling mechanism comprises a drill rod and a tapper or a drill bit used for tapping, the drill rod is arranged on the sealing sleeve in a penetrating mode, and one end of the drill rod is connected with the tapper or the drill bit; a sealing piece is arranged between the sealing sleeve and the drill rod, and a deflation valve is arranged on the sealing sleeve. The outdoor gas pipeline deflation device has the advantages that the hoop is fixed to the gas pipeline, the tapper penetrates through the connector to open a hole, and the hole opening position can be accurate; the deflation valve is communicated with the interior of the sealing sleeve, and gas in the sealing sleeve can be controlled to be exhausted outwards by opening the deflation valve; in the state that the hoop and the gas pipeline are assembled, the sealing sleeve and the hoop are integrally sealed, a worker can control the discharge amount of gas through the deflation valve, and safety is improved.

The utility model belongs to the technical field of wall tapping tools, in particular to a wall tapper convenient for replacing a drill bit, which comprises a central drill bit and a circular hole saw, and further comprises a regular hexagonal fixing sleeve and a locking assembly, and the locking assembly comprises a locking pressing block, a fixing frame and a threaded column; a regular hexagonal fixing sleeve is fixed to the center drill bit, a regular hexagonal through hole allowing the regular hexagonal fixing sleeve to penetrate through is formed in the circular hole saw, a plurality of fixing frames are fixed to the circular hole saw at equal intervals in the circumferential direction, and threaded columns are installed on the fixing frames in a threaded screwing mode. According to the wall tapper, the regular hexagonal fixing sleeve penetrates through the regular hexagonal through hole to position the installation position of the center drill bit, the threaded column is rotated, the threaded column pushes the locking pressing block to be embedded into the locking groove to be locked under the screwing effect of threads, and the installation stability of the center drill bit is greatly improved; and meanwhile, the center drill bit is easy to disassemble and replace, and the use convenience is improved.

The invention relates to the field of petroleum and natural gas drilling engineering, in particular to a drifting centralizer and a using method.The drifting centralizer comprises a connecting cylinder, the connecting cylinder is provided with an axially-through connecting hole, the connecting hole is used for allowing a drill rod to penetrate through, and the connecting cylinder can be detachably connected with the drill rod; a plurality of centralizing strips are arranged along the outer wall of the connecting cylinder in an extending mode, a through groove is formed between every two adjacent centralizing strips, the through grooves penetrate through spaces at the two ends of the connecting cylinder, and cutting parts used for cutting falling blocks in a well are arranged at the longitudinal ends of the centralizing strips. The arranged centralizing strips can abut against the well wall of the well, so that the effect of centralizing the drill bit is achieved; when the cutting part encounters falling blocks, the falling blocks can be crushed into disintegrating slag or silt, and the silt and the disintegrating slag are transferred to the rear end of the advancing direction of the drifting centralizer through the through groove, so that drill jamming during drifting is avoided, the drifting time is shortened, and the drifting efficiency is improved; the invention further relates to a using method of the drifting centralizer.

This invention relates to the field of soil environmental monitoring technology, and in particular discloses a sampling device for simultaneously collecting in-situ soil solutions and gases. The device comprises a support frame unit, a sampling device installed within the support frame unit, a drive device installed on the support frame unit, and a controller for controlling the drive device and the sampling device. The sampling device includes an aperture opener for drilling, a collector for simultaneously collecting soil solutions and gases from the drilled hole, and a gas-liquid separation unit for separating the collected solutions and gases. This device is a complete sampling system that not only reduces equipment costs and improves sampling efficiency, but also ensures the correlation and accuracy of synchronous, in-situ sampling data. By simultaneously, in-situ, and isolatedly collecting soil solutions and soil gases from the same borehole and at the same depth, it avoids cross-contamination and atmospheric interference, significantly improving sampling efficiency and data comparability, and providing a reliable technical means for research on multi-media soil environments.

The invention discloses a multi-station synchronous drilling device for a main beam steel pipe of a heliostat support, which comprises an integral frame type rack serving as a mounting foundation, guide positioning seats are uniformly distributed on the rack, and the guide positioning seats are matched with beam supporting plates on the main beam steel pipe to realize circumferential positioning of the main beam steel pipe; and at least three groups of tapper assemblies are arranged on the rack. The invention further provides an installation method of the multi-station synchronous drilling device for the main beam steel pipe of the heliostat support and a working method of the multi-station synchronous drilling device for the main beam steel pipe of the heliostat support. The device is of an integral frame structure and is good in stability; a workpiece is clamped at one time, multi-station bidirectional one-time drilling forming is achieved, the machining precision is guaranteed, and the production efficiency is greatly improved; drilling operation of different hole diameters, hole distances and hole depths can be met, and high flexibility and adaptability are achieved; fast feeding, working feeding, working retreating, fast retreating and stopping can be automatically carried out, automation is achieved, and the requirement for large-scale production is met.

The utility model relates to the technical field of connecting structures and diamond tappers, in particular to a connecting structure and a diamond tapper, which comprise a diamond tapper (1), a drill handle (2) is arranged at the top of the diamond tapper (1), a threaded hole is arranged in the middle of the drill handle (2), and a first telescopic groove (4) is arranged at the bottom of the threaded hole of the diamond tapper (1). A first spring (5) is arranged in the middle of the first telescopic groove (4), and the top of the first spring (5) is connected with a telescopic plate (6); the device has the advantages that the first spring (5) drives the telescopic plate (6) to stretch out and draw back upwards through tension, so that an inserting column (7) in the middle of the top of the telescopic plate (6) extends out of the first telescopic groove (4) and is inserted into an inserting groove (8) formed in the bottom of the drilling machine thread part (3) in the threaded hole, the inserting groove (8) is limited, and the drilling machine thread part (3) can be inserted into the inserting groove (8). And the connection between the drilling machine threaded part (3) and the threaded hole is prevented from rotating and loosening.

1. The name of the product of this design: Hole opener (hexagonal shank HSS high-speed steel). 2. Purpose of the product of this design: a hole opener used for drilling holes. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the key points of the design: 3D drawing of Design 1. 5. Designate Design 1 as the base design.

The utility model discloses a glass rhinestone multi-angle trepanning device, which belongs to the technical field of glass trepanning, and comprises a positioning seat and a cylinder, the upper surface of the positioning seat is provided with a stroke groove, the outer surface of the cylinder is provided with a protection assembly, the upper surface of the positioning seat is provided with an adjusting assembly, and the adjusting assembly is provided with a positioning groove. An air blowing assembly is arranged on the side wall of the adjusting assembly; according to the glass drilling device, the protection assembly is arranged, along with extension of the air cylinder, the fixing plate drives the positioning plate to move synchronously through the positioning rod, so that the protection cover and the tapper are driven to move synchronously, at the moment, the protection cover covers the tapper, the polishing motor drives the tapper to rotate, and the tapper is used for drilling a glass rhinestone; and the protective cover covers dust generated during trepanning, so that the trepanning device automatically gathers the dust generated during trepanning, the dust generated during trepanning can be conveniently cleaned in the later period, and the working efficiency of the trepanning device is improved.

The invention provides a tapper, and belongs to the technical field of hardware tools. The technical problem that waste materials are inconvenient to discharge in an existing tapper is solved. The tapper comprises a tapping cylinder and a connecting rod, one end of the perforated cylinder is a cutting edge end, and the other end is a connecting end; a through hole communicated to the interior of the perforated cylinder is formed in the connecting end of the perforated cylinder; one end of the connecting rod is used for being connected with an electric drill, and the other end of the connecting rod is inserted into the through hole and is in circumferential limiting and axial sliding connection with the perforated cylinder; a limiting assembly used for limiting axial movement of the connecting rod in the through hole is further arranged on the trepanning cylinder. According to the tapper, waste embedded in the tapper can be conveniently, rapidly, stably and reliably discharged, the waste embedded tightly can be easily ejected out, and normal use of the tapper cannot be affected; in addition, the connecting rod can also play a role in limiting and positioning, so that the punching depth is accurately and reliably controlled.

1. The name of this design product: Magnetic drill rod hole opener (bimetallic). 2. Purpose of the product of this design: a hole opener to be installed on a magnetic drill. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the key points of the design: Design 1 Stereoscopic drawing 1. 5. Designate Design 1 as the base design.

The application belongs to the technical field of drilling, in particular to a drilling mechanical arm for underground engineering; the drilling mechanical arm comprises a rock drilling jumbo, a mechanical arm is installed on the rock drilling jumbo, a bracket is installed on the mechanical arm, a pushing beam is slidably installed on the bracket, a supporting plate is slidably installed on the left side of the pushing beam on a sliding rail, a rock drill is installed on the supporting plate, a drill rod is installed on the rock drill, a fixed plate is fixedly installed on the right end of the pushing beam, a first annular groove is formed in the through hole, an annular plate is rotatably installed in the first annular groove, a hole opener is fixedly connected to the right end surface of the annular plate, a first sliding frame is arranged on the left side of the fixed plate, an arcuate seat is fixedly connected to the top of the first sliding frame, a cylinder is installed in the arcuate seat, and an auxiliary mechanism is further arranged on the right end of the pushing beam; the positioning mechanism can constrain the drill rod during drilling, effectively limiting the radial swing of the drill rod during high-speed rotation.

The utility model relates to the technical field of pipeline trepanning, in particular to a pipeline trepanning device which comprises a fastening ring, an arc-shaped boss is fixedly installed on the outer side of the fastening ring, an arc-shaped concave table is installed on the arc-shaped boss in a sliding mode, the relative positions of the arc-shaped boss and the arc-shaped concave table can be fixed, and a trepanning device is fixedly installed on the arc-shaped concave table. Through relative movement of the arc-shaped boss and the arc-shaped concave table, after the fastening ring is installed on the pipeline, the tapper can rotate around the fastening ring, that is, the tapper can rotate around the pipeline, the tapping angle of the tapper can be adjusted, and accurate positioning of pipeline tapping is achieved; through the arrangement of the distance increasing mechanism, the length of the whole tapping device can be effectively reduced, the tapping device is easier to operate in the complex and dense space of the pipeline, the tapping angle position of the pipeline can be adjusted more conveniently, and accurate tapping of the pipeline is achieved.

The invention belongs to the technical field of drilling, and particularly relates to a drilling mechanical arm for underground engineering. Comprising a drill jumbo; a mechanical arm is mounted on the rock drilling trolley; a bracket is mounted on the mechanical arm; a propelling beam is mounted on the bracket in a sliding manner; a supporting plate slides on the sliding rail on the left side of the propelling beam, and a rock drill is mounted on the supporting plate; a drill rod is mounted on the rock drill; a fixed plate is fixedly mounted at the end part of the right side of the propelling beam; a first ring groove is formed in the through hole; an annular plate is rotationally arranged in the first annular groove; the right end face of the annular plate is fixedly connected with a tapper. A first sliding frame is arranged on the left side of the fixed plate; the top of the first sliding frame is fixedly connected with an arch-shaped seat; a cylinder body is mounted in the arch-shaped seat; an auxiliary mechanism is further arranged at the end of the right side of the propelling beam. By arranging the positioning mechanism, the drill rod for drilling can be restrained, and radial shaking of the drill rod during high-speed rotation is effectively limited.

The invention relates to the technical field of drilling equipment, and particularly discloses hole sealing and blasting trepanning equipment with a positioning mechanism, the hole sealing and blasting trepanning equipment comprises a fixed base, the top of the fixed base is fixedly connected with an angle adjusting device, and one side of the angle adjusting device is fixedly connected with a first connecting rod; a sliding base is fixedly connected to the end, away from the angle adjusting device, of the first connecting rod, a first sliding groove is formed in the side face of the sliding base, a first sliding block is slidably connected to the inner wall of the first sliding groove, a drill rod is fixedly connected to an impact shaft of the rock drill, and a tapper is fixedly connected to the end, away from the rock drill, of the drill rod. According to the hole sealing blasting tapping equipment with the positioning mechanism, the angle adjusting device is arranged, so that multi-angle arc positioning can be achieved, the supporting and fixing devices are arranged, so that a drill rod can be supported and fixed, and the drilling efficiency is improved. And the drilling precision is prevented from being influenced by violent shaking of the drill rod during drilling.

The invention provides a high-temperature alloy plate laser trepanning device, and relates to the technical field of laser trepanning. The two ends of the base are each provided with a set of positioning plates in a threaded mode, the rear end of the base is fixedly provided with a downward-pressing electric telescopic rod, the bottom of a transmission shaft of the downward-pressing electric telescopic rod is fixedly provided with a set of pressing frames, a suction fan is installed in a smoke suction frame, a rotating seat is rotationally installed on a laser tapper, and an inserting hole is formed in the top of a semi-grinding wheel. The inserting rod is inserted into an inserting hole in the top of the half grinding wheel; the device can accurately fix alloy plates of different sizes, and the adjusting adaptability is high; the semi-grinding wheel can be quickly disassembled, assembled and maintained, and the hole opening position can be ground to improve the efficiency; opening flue gas can be absorbed and purified in real time, and the environmental protection performance is enhanced; the problems that precise fixing of alloy plates of different sizes is difficult to achieve, and the function of the device is single are solved; the problems that after laser trepanning is conducted, the trepanning position is not prone to being rapidly polished, and smoke generated in the laser trepanning process cannot be effectively treated in time are solved.

1. Name of the designed product: soldering hole opener (series 1). 2. Use of the designed product: the designed product is used for drilling. 3. Design points of the designed product: in shape. 4. Picture or photo that best shows the design points: perspective view.

The present invention relates to the technical field of plate processing, and specifically to an adjustable plate hole opener, comprising a base plate, a drill connecting rod, an adjusting component, a cutting component and a limiting component. The base plate is a circular plate-shaped structure, and a safety component is sleeved on one side of the outer circumference of the base plate. The drill connecting rod is vertically arranged at the center of the upper end of the base plate, a support frame is arranged at the upper end of the base plate, and a placement slot is arranged at the lower end of the support frame. By arranging a support frame and an adjusting frame on one side of the base plate, and then arranging three cutting knives installed in coordination with the first two through a sliding component, when it is necessary to adjust and change the aperture of the punching hole, rapid and synchronous adjustment can be performed through the scale lines of the adjusting frame and the supporting frame, and the operation is simple and convenient. At the same time, under the tightening installation action of the threaded fixing block, the adjusting component is cooperated to stably limit the adjusted position of the cutting knife, and at the same time, the safety component is cooperated to improve the safety of the puncher when in use.

1. The name of the design product: hole opener accessories. 2. The use of the design product: hole opener accessories for hole opening and drilling. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 3 in use state figure 4. 5. Design 3 is designated as the basic design.

The invention provides a quick-change tapper connecting rod, which relates to the technical field of tapping tools and comprises a rotating handle assembly and a tapping assembly which are detachably connected. The rotating handle assembly comprises a drill bit limiting sleeve and a clamping hoop assembly, the tapping assembly is composed of a cylindrical tapper and a positioning drill bit, the positioning drill bit penetrates through the interior of the cylindrical tapper, and one end of the positioning drill bit extends out of a bottom mounting hole and extends into the drill bit limiting sleeve to be detachably fixed through the clamping hoop assembly. A mounting table is arranged at the upper end of the drill bit limiting sleeve, a pressing assembly is arranged on the mounting table and comprises a locking piece, the locking piece can move horizontally, and a locking piece at the upper end of the locking piece can penetrate through a bottom mounting hole and press the edge of the hole; a lifting mechanism is arranged between the upper end of the drill bit limiting sleeve and the cylindrical tapper, and the locking piece and the hole edge can be quickly locked or separated by adjusting the vertical position of the cylindrical tapper. The connecting rod is matched with the lifting mechanism through the pressing assembly, the disassembly and assembly process is simplified, the tapper can be quickly replaced, the operation efficiency and convenience are improved, the structure is compact, and connection is stable.