96 results about "Gun drill" patented technology

The invention relates to the technical field of handheld gun drills, and discloses a lithium battery wireless operation gun drill which comprises a gun body, a supporting sleeve is fixedly connected to the outer wall of the gun body, a first sliding sleeve is slidably connected to the outer wall of the supporting sleeve, and a driving rod is rotatably connected to the inner wall of the gun body through a bearing; a sliding rod is slidably connected to the outer wall of the driving rod through a spline, a chuck is fixedly connected to the end, away from the driving rod, of the sliding rod, a supporting mechanism is arranged on the outer wall of the first sliding sleeve and comprises a third sliding sleeve, the inner wall of the third sliding sleeve is slidably connected with the outer wall of the first sliding sleeve, and a second positioning block is inserted into the inner wall of the third sliding sleeve. The gun body is supported through the supporting mechanism, the friction force between the gun body and the surface of the metal plate is increased, when the drill bit is stuck, the impact force generated by self-rotation of the gun body part is released to the surface of the metal plate through the pressing plate and the pressing block, and the situation that the counter impact force generated by sticking of the drill bit in the drilling process is too large is avoided.

The invention relates to the technical field of handheld gun drills, and discloses a brushless motor driven pistol drill which comprises a shell, the inner wall of the shell is fixedly connected with a brushless motor, the inner wall of the shell is rotatably connected with driving teeth through a bearing, a buffer mechanism is arranged in the shell, the buffer mechanism comprises a driving rod, and the driving rod is fixedly connected with the brushless motor. The outer wall of the side, close to the driving teeth, of the driving rod is fixedly connected with the inner wall of the driving teeth, the outer wall of the driving rod is connected with a hinged plate through a rotating shaft hinge, the other end of the hinged plate is fixedly connected with the outer wall of the connecting rod through a rotating shaft, and the inner wall of the driving rod is fixedly connected with an elastic push rod. And the other end of the elastic push rod is fixedly connected with the inner wall of the connecting rod. According to the handheld gun drill, the buffering mechanism is arranged to release reverse twisting force generated when the drill bit drills holes, the situation that the temperature of the brushless motor is increased due to the fact that instantaneous resistance of the brushless motor is increased is prevented, and the stability of the handheld gun drill in the working process is improved.

The application relates to the technical field of handheld gun drills, and discloses a brushless motor mute gun drill, which comprises a gun body and a chuck, the inner wall of the gun body is fixedly connected with a driving motor, the outer wall of the driving motor is provided with a flow guide mechanism, the flow guide mechanism comprises a flow guide sleeve, the flow guide sleeve is sleeved in the gun body, a flow guide cavity is formed in the flow guide sleeve, baffles are fixedly connected to the cavity wall of the flow guide cavity and separate the flow guide cavity into different volume cavities, the baffles are provided with flow guide holes to communicate the inside of the flow guide cavity, the heat dissipation air reduces noise during flow in the different volume cavities in the flow guide cavity, and a flow distribution fan is arranged, which rotates along the inner wall of the flow guide sleeve. The flow guide mechanism is arranged to guide the heat dissipation air, the heat dissipation air flows in the flow guide cavities of different volumes separated by the baffles, the heat dissipation air is subjected to noise reduction, the noise generated by the driving motor is subjected to sound insulation, and the noise generated by the driving motor and the heat dissipation air is reduced.

The application relates to the technical field of handheld gun drills, and discloses a brushless motor mute gun drill, which comprises a gun body and a chuck, the inner wall of the gun body is fixedly connected with a driving motor, the outer wall of the driving motor is provided with a flow guide mechanism, the flow guide mechanism comprises a flow guide sleeve, the flow guide sleeve is sleeved in the gun body, a flow guide cavity is formed in the flow guide sleeve, baffles are fixedly connected to the cavity wall of the flow guide cavity and separate the flow guide cavity into different volume cavities, the baffles are provided with flow guide holes to communicate the inside of the flow guide cavity, the heat dissipation air reduces noise during flow in the different volume cavities in the flow guide cavity, and a flow distribution fan is arranged, which rotates along the inner wall of the flow guide sleeve. The flow guide mechanism is arranged to guide the heat dissipation air, the heat dissipation air flows in the flow guide cavities of different volumes separated by the baffles, the heat dissipation air is subjected to noise reduction, the noise generated by the driving motor is subjected to sound insulation, and the noise generated by the driving motor and the heat dissipation air is reduced.

The invention discloses a machining technology of a precise deep hole part. The machining technology comprises the following steps that S10, blanking is conducted; s20, solid solution aging; s30, roughly turning an outer circle and chamfering; s40, a middle hole is drilled through a gun; s50, roughly turning the appearance; s60, stress relief aging is carried out; s70, roughly turning the outer circle; s80, the small end is subjected to semi-finish turning; s90, the large end is subjected to semi-finish turning; s100, honing an inner hole; s110, the outer circle is finely ground; and S120, the two ends are subjected to finish turning, and the precise deep hole part is obtained. Compared with the prior art, the technology has the following beneficial effects that 1, the technology is adopted for machining, and the requirement for the coaxiality of 0.02-0.03 of the outer circle of a deep hole in a drawing can be met after machining; 2, the coaxiality of the center hole and the outer circle after gun drill machining can be effectively rectified by adopting the expansion sleeve clamp to roughly turn the outer circle, the subsequent outer circle grinding allowance is reduced, and the machining efficiency is improved;

The present application relates to the technical field of drill bits, and discloses a DM gun drill bit, which comprises a drill rod and a mounting rod, a connecting piece is arranged above the drill rod, a first circular notch is formed in the connecting piece, a notch is formed below the first circular notch, a second circular notch is formed below the notch, drive notches are formed on the two sides of the second circular notch, a drive rod is arranged in the drive notches, two symmetrical wedge blocks are arranged in the first circular notch, and a circular mounting ring is arranged on the first circular notch. When the mounting rod is mounted in the first circular notch of the connecting piece, the mounting rod will extrude the moving rod to drive the drive rod to move out of the drill rod, so that the operation is facilitated; the mounting rod is rotated to the corresponding position, the wedge blocks are inserted into the moving notches under the action of the auxiliary components, the mounting rod is stably limited, and the connection is reliable; meanwhile, the movement of the wedge blocks drives the knocking rod to knock the inner wall of the mounting notch to make a sound, the mounting is prompted to be completed, the efficiency and accuracy are improved, and the operation is convenient.

The utility model relates to the technical field of gun drills, and discloses a deep hole alloy gun drill which comprises an installation head, two movable shells are fixedly installed on one side of the installation head, the two movable shells are arranged in an arc shape, locking heads are installed on the inner walls of the two movable shells respectively in a sliding mode, and two positioning blocks are fixedly connected to the inner wall of the installation head. The gun handle is slidably connected to the inner wall of the mounting head, the positioning block slidably penetrates into the gun handle, the locking head slidably penetrates into the inner wall of the outer side of the gun handle, the gun handle is inserted into the mounting head, the positioning block can preliminarily position the gun handle, and the situation that the gun handle slips and rotates during working after being clamped is prevented; and then air is supplied to the interior of the movable shell through an external equipment air supply mechanism, the electromagnetic valve can close and open the connecting pipe to prevent the locking head from moving, then the locking head is inserted into the outer wall of the gun handle, the locking head can be locked and positioned, the gun handle is convenient to install, and installation is portable and rapid.

The invention relates to the technical field of deep hole machining equipment, in particular to a tool breakage alarm device for a deep hole machining drill, which comprises a deep hole drill platform, and a tool breakage judgment module and a blockage monitoring module are arranged on the deep hole drill platform; the cutter breaking judgment module comprises a target reflection assembly, a microwave distance measurement assembly and a temperature thermal compensation module; the target reflection assemblies are arranged on a drill rod and a tool bit of the gun drill respectively, and the microwave distance measurement assembly and the temperature thermal compensation module are arranged in the oil base; a blocking monitoring module and an active unblocking module are arranged on the deep hole drilling platform; the blockage monitoring module is set as an oil pressure sensor; the oil pressure sensor is mounted in an outlet pipeline of the cutting liquid pump; the active unblocking module is arranged to be a high-frequency electromagnetic pulse valve, and the high-frequency electromagnetic pulse valve is arranged in an outlet pipeline of the chip liquid pump. The technical problems that in the traditional deep hole machining process, the cutter breaking condition and the blocking condition are difficult to distinguish, misinformation and missing information are generated, and active unblocking cannot be achieved are solved.

1. Name of the product in this design: Gun Drill (Mini Cannon). 2. Purpose of this design: For drilling and screw assembly / disassembly. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention relates to a high-precision pistol drill which comprises a pistol drill body, an output shaft, a drill bit assembly and a high-precision measuring assembly arranged at the end of the pistol drill body, and the high-precision measuring assembly comprises a mounting support, a first connecting rod and a second connecting rod, a positioning plane attached to a plane to be punched is arranged on the side wall of the mounting bracket; the length measuring mechanism is rotationally mounted on the mounting bracket and is used for measuring the relative distance in the drilling process; the positioning block is mounted on the length measuring mechanism; and the positioning rod is slidably mounted on the positioning block. The drilling device has the effect that accurate drilling can be carried out after direct measurement according to the requirement for the distance between two holes.

The utility model relates to the technical field of gun drill brushing structures, in particular to a disc flat brush quick connecting rod structure for a handheld gun drill, which comprises a main body rod piece and is characterized in that the diameter of the main body rod piece is 150 + / -2mm, the main body rod piece comprises a hexagonal rod, one end of the hexagonal rod is connected with a main body sleeve, one end of the main body sleeve is connected with a sliding sleeve, and the other end of the main body sleeve is connected with a handle. A steel wire is arranged on one side of the interior of the sliding sleeve, an elastic limiting mechanism is arranged on one side of the steel wire, a magnetic sleeve is arranged on one side of the interior of the sliding sleeve, and magnetic steel is arranged in the magnetic sleeve. Rapid replacement is achieved through magnetic attraction pre-positioning and elastic secondary locking, and a tool hole is automatically centered through magnetic attraction force guiding; after the 65Mn steel spring is subjected to a fatigue test, the elasticity attenuation is less than 5%, and 8N pressing force is generated to complete mechanical locking; triple protection of electrophoretic paint (20 microns), chromium plating (15 microns) and anodic oxidation (15 microns) passes a neutral salt spray test for 1000 hours; the N20 magnetic steel enables the vibration of the hand to be reduced to 0.8 m / s < 2 >; the diamond-shaped surface enables the holding force to be increased to 120 N (70 N compared with a smooth surface).

The utility model relates to the technical field of drill bit machining, and discloses a gun drill coping fast detection comparison block which comprises a body, a plurality of detection notches are formed in the body, each detection notch is provided with a limiting face, an outer blade detection face and an inner blade detection face, the outer blade detection faces are connected with the inner blade detection faces, and the limiting faces and the outer blade detection faces are connected with the limiting faces respectively. The limiting surface is used for limiting the gun drill tip; the outer edge detection surface is used for detecting the angle of the outer edge of the gun drill tip; the inner edge detection surface is used for detecting the angle of the gun drill tip inner edge. On the premise that grinding accuracy and efficiency are guaranteed, a large number of manpower resources and production preparation time are saved, production cost is reduced, and the drill bit grinding device is extremely applicable to grinding of drill bits of the same kind; the device is small and portable, can be used anytime and anywhere, and avoids the complexity of using professional equipment; manufacturing is simple, and machining cost is low; and quick responsiveness is achieved, tool nose parameters can be compared immediately after coping, and bad points can be repaired in time.

1. Name of the designed product: lithium electric gun drill (16.8v). 2. Use of the designed product: the designed product is used for electric tools for drilling, screwing, etc. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

The utility model relates to punch device technical field especially relates to a kind of punch device for building board processing, including hand gun drill body and the drill bit for being used to carry out the drilling of building board, hand gun drill body includes the detachable connection of drill head driving element and the power handle integrated with drill head driving element, power handle has the press switch for controlling drill head driving element to drive drill head rotation, the front of drill head driving element is also provided with the support that can be passed through by drill head, support is connected between hand gun drill body by adjustable assembly, adjustable assembly includes the fixed connection of screw sleeve with support, the screw thread cooperation of screw rod between screw sleeve, the fixed connection of sliding sleeve with support and the guide rod body of sliding connection with sliding sleeve, it can assist personnel to accurately grasp the depth of drilling by setting support and adjusting assembly, solve the problem that depth is not easy to accurately grasp in the existing punching process.

1. Name of the product in this design: Handheld Gun Drill (8V Lithium Battery). 2. Purpose of this design: For drilling or deep hole machining. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model relates to the technical field of deep hole drilling and milling machine supporting frames, and discloses a numerical control deep hole drilling and milling machine supporting frame structure which comprises a drilling and milling workbench and a gun drill assembly, a stable supporting device is arranged on the rear side of the surface of the drilling and milling workbench and comprises a gray cast iron supporting frame and a rubber shock pad, and a starting rotating motor is arranged on the rear side of the surface of the drilling and milling workbench. The driving gear and the driven gear are driven to rotate, the threaded sliding block is promoted to drive the stabilizing plate and the gun drill assembly to move downwards, the limiting block stably slides in the limiting groove, the sliding block moves in the sliding groove, the threaded rod rotates at the uniform angular speed, and the threaded sliding block conducts linear motion, so that working parts connected with the threaded rod can stably move; when drilling operation is carried out, the two spring columns at the top of the stabilizing plate can effectively absorb part of high-frequency vibration generated in the operation and cutting process of the drilling machine, and therefore the problem that due to shaking of the supporting frame in the drilling process or vibration generated by the drilling machine, the position precision is insufficient is solved.

The invention provides a diesel engine cylinder cover small-angle crossed deep hole machining method and belongs to the technical field of machining. The method comprises the following steps: firstly, clamping a workpiece on a special fixture by taking a central oil injector hole of the cylinder cover as a process positioning reference, and enabling the center of the fixture to coincide with the center of a B axis of a machine tool; then, a specially-made hard alloy composite platform guide drill is adopted for machining deep guide holes of the two cross holes step by step, the guide drill has the front end centering function and the rear end long guiding function, and initial sliding of a tool and deflection in the machining process can be effectively prevented; and finally, a gun drill is used for completing final depth machining along the guide hole. Through the innovative tool design and the machining sequence of completing one hole and then guiding another hole, the problems that in the small-angle crossed deep hole machining process, a tool is prone to deflection and breakage are solved, and high-precision, high-efficiency and high-reliability machining is achieved.

The utility model discloses a gun drill welding fixture which comprises a welding fixture body, the welding fixture body comprises a base and a heating pipe groove, and the heating pipe groove is formed in the position, close to the middle, of one end of the base; the supporting assembly comprises a movable groove, a fixing plate, a hand wheel, a threaded rod, an iron wedge and a second V-shaped block, the movable groove is formed in the middle of the upper surface of the base and communicates with the heating pipe groove, the fixing plate is fixed to the side edge of the base, the threaded rod is in threaded connection with the middle of the fixing plate and penetrates through and is rotationally connected to the side edge of the base, and the hand wheel fixes one end of the threaded rod. The other end of the threaded rod is rotationally connected to the middle of the side edge of the wedge, and the second V-shaped block is placed in the movable groove. The utility model relates to a welding fixture, and aims to solve the problems that the adjustment (center height of a handle and a blade) of the conventional welding fixture is positioned below a heating pipe and on the lower surface of a base, the operation is very inconvenient, and the conventional welding fixture is too close to the heating pipe (a copper pipe) and cannot be used and replaced due to deformation caused by long-term use.

The invention discloses a four-head drilling machine for metal part machining, and relates to the technical field of machining drilling machines, the four-head drilling machine comprises a machine tool, four sets of gun drills, a guide table and a clamping mechanism, the guide table is fixed on the machine tool, the clamping mechanism is installed on the guide table, the four sets of gun drills are arranged on the two sides of the guide table, and the clamping mechanism is installed on the guide table. A collecting groove is formed in the guide table and used for collecting falling chippings, a plurality of rotating shafts are rotationally arranged in the collecting groove, the two ends of each rotating shaft penetrate out of the two side wall faces of the collecting groove, the rotating shafts are sleeved with chipping wheels, a plurality of first screen holes are formed in the circumference of the surface of each chipping wheel, and the adjacent chipping wheels are rotationally matched. An air exhaust groove is formed in the middle of the rotating shaft, one end of the air exhaust groove is of an open structure, a plurality of inlets are formed in the lower side surface of the rotating shaft at intervals, the open end of the rotating shaft is externally connected with an extraction device, and the extraction device is connected with a recycling box. The device can efficiently screen and immediately recycle the chippings.

The application discloses a four-head drilling machine for metal piece machining, and relates to the technical field of machining drilling machines.The four-head drilling machine comprises a machine tool, four groups of gun drills, a guide table and a clamping mechanism, the guide table is fixed on the machine tool, the clamping mechanism is installed on the guide table, the four groups of gun drills are arranged on the two sides of the guide table, a collecting groove is formed in the guide table and is used for collecting falling chippings, a plurality of rotating shafts are rotatably arranged in the collecting groove, the rotating shafts pass through the two side walls of the collecting groove at two ends, a chip removal wheel is arranged on the rotating shaft, a plurality of sieve holes are formed in the surface of the chip removal wheel, the adjacent chip removal wheels are rotationally connected, a suction groove is formed in the middle of the rotating shaft, one end of the suction groove is of an open structure, a plurality of inlets are formed in the lower surface of the rotating shaft at intervals, a suction device is arranged outside the open end of the rotating shaft, and the suction device is connected with a recovery box.The four-head drilling machine can efficiently screen and instantly recover chippings.

1. Name of the designed product: lithium battery gun drill (21v). 2. Use of the designed product: used for drilling of various materials and installation and removal of various screws. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

The invention relates to the technical field of small-diameter gun drill broken tool detection, in particular to a gun drill broken tool detection system and method based on a Bernoulli equation and a mean value algorithm. The gun drill broken tool detection system comprises a small-diameter single-blade gun drill, an extension rod, a hollow main shaft, a rotating joint, a sensor mounting base, a pressure transmitter and an upper computer. The pressure signals are converted into digital signals through the A / D conversion module, real-time pressure values are obtained, the pressure values are collected in each drilling period, the average value is calculated, and whether tool breakage occurs or not is judged by comparing the average pressure fluctuation value of two adjacent holes with a preset threshold interval, so that whether the small-diameter single-blade gun drill is broken or not is detected. According to the technical scheme, the influence of oil temperature changes on long-term pressure monitoring is avoided, high-sensitivity detection can be achieved only through a common pressure transmitter, and the problem that due to the characteristics of small feeding resistance, hidden machining and the like of a small-diameter gun drill, traditional detection means such as a current method and a visual method fail is solved.

The utility model provides a gun drill for a slender hole, which belongs to the technical field of gun drills, aims to solve the problems that scraps and raised dust which are generated by crushing a drilled object due to high-speed operation of a drill rod splash everywhere, are extremely easy to hurt a worker and influence the operation safety during drilling operation, and comprises a gun drill main body, the drill rod is rotationally arranged outside the front end face of the gun drill body. The protective shell is fixedly connected to the outer side of the upper end of the gun drill body. The movable shell is slidably connected to the outer side of the front end face of the protective shell. The material cleaning scraping plate is rotationally arranged on the inner sides of the protective shell and the movable shell; the material guiding auxiliary mechanism is arranged between the material cleaning scraping plate and the movable shell; the material guiding auxiliary mechanism comprises a driving rotating shaft and a transmission gear ring; according to the gun drill, the outer side of the drill rod is effectively protected, chippings and raised dust are prevented from splashing all around, and the operation safety of an operator during drilling operation and the use safety of the gun drill in the actual application process are guaranteed.

The utility model discloses an auxiliary chip removal device for processing an inclined oil hole of a crankshaft, which is provided with a compressed air connector fixedly connected to the center of a pressing plate, the compressed air connector penetrates through the pressing plate and then is integrally connected with an exhaust pipe, and when the inclined oil hole of the crankshaft is drilled, the exhaust pipe is inserted into a straight oil hole of the crankshaft; the crankshaft compression device further comprises an air compressor communicated with the compressed air connector, and compressed air generated by the air compressor enters the inclined oil hole through the crankshaft straight oil hole. According to the utility model, the external compressed air pipeline is additionally connected with the straight oil hole communicated with the inclined oil hole, compressed air is used for assisting pressurization, and a cooling liquid water pump is matched, so that scrap iron generated when the inclined oil hole is machined is efficiently discharged, and the quality problems that a gun drill is likely to break and scratch a hole wall due to unsmooth chip removal and the like are effectively avoided.

The utility model relates to gun drill technical field especially, relate to a combined hard alloy gun drill, the utility model discloses reasonable structure design, it mainly comprises the gun head, gun barrel and gun handle, before gun barrel and gun head welding fixed, first utilize the cooperation of lock plate and T -shaped lock groove to connect, utilize riveting piece again and lock the position of lock plate and gun barrel, can improve the connecting strength of gun barrel and gun head through this mode, weld reinforcing rib plate between gun barrel and gun handle, can improve the reliability of connection, set up reinforcing rib plate as the leaf plate structure simultaneously, so that all reinforcing rib plate can constitute the impeller with gun handle, and the impeller can assist blowing scrap in the drilling process.

The invention relates to the technical field of mechanical assembly, in particular to an automatic gun drill assembly line device which comprises a machine body, and a conveying line body, a multi-station positioning turnover assembly, an automatic feeding structure, a locking module, a comprehensive testing module, a laser marking module, a discharging module and a control system are arranged on the machine body. The conveying line body is sequentially divided into a gun drill semi-finished product feeding section, a shell front and rear cover assembling section, a chuck feeding section, a chuck locking section, a testing section, a marking section and a finished product receiving section along the assembling process. The multi-station positioning overturning assembly, the automatic feeding structure, the locking module, the comprehensive testing module, the laser marking module and the discharging module are sequentially arranged along the functional section of the conveying line body and electrically connected with the control system through shielding cables. The method has the following effects that the product percent of pass is increased, the labor cost is reduced, and the assembly efficiency is improved.

The application provides an adjustable deep hole machining structure for a new energy main drive motor shaft, which is used for machining the inner hole of the motor shaft. The machining structure comprises a vertically arranged seat body that can be lifted, and a gun drill located below the seat body. A clamping seat is assembled at the bottom of the seat body, and a lower center is assembled in the clamping seat, and a through hole is arranged in the lower center for the gun drill to pass through. A limiting slide rail is arranged on the seat body, and an adjusting seat is slidably assembled on the limiting slide rail. An upper center opposite to the lower center is assembled below the adjusting seat, and the adjusting seat is driven by an upper oil cylinder. The adjustable deep hole machining structure has the following advantages: high machining efficiency, high machining precision, stable and reliable machining, and flexible and convenient operation. Through the machining structure provided by the application, the machining quality and production efficiency of the inner hole of the motor shaft can be effectively improved, and the needs of specific applications can be met.

The invention relates to the technical field of drill bits, and discloses a DM gun drill bit which comprises a drill rod and a mounting rod, a connecting piece is arranged above the drill rod, a first circular notch is formed in the connecting piece, a notch is formed below the first circular notch, a second circular notch is formed below the notch, and driving notches are formed in the two sides of the second circular notch; a driving rod is arranged in an inner cavity of the driving notch, two symmetrical wedge-shaped blocks are arranged in an inner cavity of the first circular notch, and a circular mounting ring is arranged on the first circular notch. During mounting, the mounting rod is placed in the first circular notch of the connecting piece, the moving rod can be extruded to drive the driving rod to move out of the drill rod, and operation is convenient; the mounting rod is rotated to a corresponding position, the wedge-shaped block is inserted into the moving notch under the action of the auxiliary component, the mounting rod is stabilized and limited, and reliable connection is ensured; meanwhile, the wedge-shaped block moves to drive the knocking rod to collide with the inner wall of the mounting notch to make a sound to prompt that mounting is completed, efficiency and accuracy are improved, and operation is convenient.

1. Name of the product in this design: Brushless Gun Drill. 2. Application of this design: To be used with drill bits, screwdriver bits, etc., for drilling or deep hole processing in marble, concrete, stone, wood or similar materials. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model discloses a kind of high-low speed gear shifting structure of gun drill gear box, specifically related to gear shifting technical field, including shell, the inner wall of shell is fixedly connected with electric cylinder, the output end of electric cylinder is fixedly connected with shaft sleeve, the inner wall of shaft sleeve is equipped with switching component, switching component includes: linkage shaft, rotation is installed in the inner wall of shaft sleeve, the outer wall of linkage shaft and close to its one end portion is fixedly connected with first pinion;First gear wheel, meshing transmission connection is on the outer wall of first pinion, the inner wall of first gear wheel is fixedly connected with connecting shaft, and one end portion of connecting shaft is equipped with high-speed motor.The utility model adopts switching component, when needing high speed gear drive, by starting electric cylinder, first pinion and first gear wheel are separated, high-speed motor drives connecting shaft to rotate, connecting shaft drives first gear wheel to rotate, and high-speed gear drive is directly and quickly driven by high-speed motor.