226results about How to "Avoid secondary damage" patented technology

The invention relates to the technical field of agricultural information and seed and seedling cultivation, and discloses a peanut planting method for relieving continuous cropping obstacles of peanuts. The method comprises the following steps: constructing initial digital twins of a land parcel, and synchronously constructing a disease-resistant peanut variety screening and seedling pretreatment system; historical continuous cropping information, soil physicochemical and microorganism data, meteorological time sequence data and seedling cultivation parameters are fused, the system is driven to evolve into operation state digital twins, and seedling-soil-environment collaborative simulation is achieved. Evaluating the continuous cropping obstacle risk and the seedling adaptability based on the twinborn body, and generating a comprehensive diagnosis report containing a nutrient imbalance index, pathogenic bacteria abundance prediction, a root exudates cumulative effect and a seedling disease-resistant adaptation coefficient; according to the method, differentiated seed and seedling optimization, soil improvement and cultivation strategies are implemented, and management measures are dynamically optimized through real-time data feedback in a growth cycle. Through cooperative driving of digital twinning and seed and seedling cultivation, source prevention, control and intervention of continuous cropping obstacles are achieved.

The invention belongs to the technical field of automatic production equipment, and particularly relates to an automatic bottle discharging device which comprises a mechanical arm, a stepping linear mechanism, a conveying belt mechanism, a bottle discharging guide mechanism, a bottle hanging lifting mechanism, a double-circular-track mechanism and a single-circular-track mechanism. The bottle discharging guide mechanism is arranged on the top of the conveying belt mechanism in parallel, the bottle hanging lifting mechanism is arranged at the tail end of the conveying belt mechanism, the double-ring-rail mechanism is arranged above the conveying belt mechanism and connected with the single-ring-rail mechanism, the mechanical arm is arranged on one side of the stepping linear mechanism, and the single-ring-rail mechanism is arranged on the other side of the stepping linear mechanism. According to the soft medicine bottle feeding device, through cooperation of the mechanical arm, the stepping linear mechanism, the conveying belt mechanism, the bottle discharging guide mechanism, the bottle hanging lifting mechanism and the circular track mechanism, efficient and lossless conveying and discharging of soft medicine bottles are achieved.

This disclosure provides a skin-adhesive device for promoting wound healing, comprising a base beam, an adhesive plate, and plastic screws. The base beam includes a first base beam and a second base beam, both having elongated holes along their length. Multiple plastic screws are present, one end of which passes through the elongated hole in the first base beam, and the other end of which passes through the elongated hole in the second base beam. A first limiting block and a first nut are provided at the end of the plastic screw closest to the first base beam, and a second limiting block and a second nut are provided at the end closest to the second base beam. The adhesive plate includes a first adhesive plate fixed to the first base beam and a second adhesive plate fixed to the second base beam. This disclosure solves the problem that traditional skin-adhesive devices cannot meet the requirement of flexible adaptation to bent body parts, and simultaneously allows for adjustment according to the size of the wound, thereby reducing secondary injury.

The utility model relates to the technical field of rehabilitation medical equipment, in particular to an angle-adjustable pedal for rehabilitation training, which comprises a fixing frame, a mounting plate, a supporting piece, a trainer, a pedal and the like. A mounting plate is rotatably connected to one end of the fixing frame, a supporting piece is fixedly connected to the top of the mounting plate, a trainer is fixedly connected to the end, away from the mounting plate, of the supporting piece, a rotating shaft is arranged in the trainer, a connecting piece is fixedly connected to the rotating shaft of the trainer, a pedal is rotatably connected to the trainer through the connecting piece, and a movable groove is formed in the inner wall of the pedal. The movable plate is driven to move by adjusting the adjusting bolts at the heel and the half sole of the bottom of the pedal, so that the movable plate is flexibly adjusted according to the ankle joint state of a patient, stable support is provided for the patient, the ankle joint movement degrees of different patients are adapted, the training comfort and effect are improved, and secondary injury is avoided.

The invention relates to the technical field of straightening equipment, and discloses an automatic matching straightening machine for shaft workpieces, which comprises a machine body, a plurality of linear sliding rails for a plurality of mechanisms to linearly move are arranged on the machine body, and strip-shaped tooth grooves matched with moving gears are formed in the two sides of the interior of the machine body; one side of the machine body is provided with a PLC (Programmable Logic Controller) control cabinet for calculating input shaft workpiece data information and generating a control signal, and the PLC control cabinet is used for controlling each mechanism on the machine body in an operation process. By adding and arranging the movable detection mechanism, when the shaft workpiece is straightened, the movable detection mechanism adopts a lever type detection structure, can be tightly attached to the surface of the shaft workpiece, sensitively captures bending deformation information of the workpiece, realizes accurate acquisition of deformation, avoids subjectivity and errors of manual detection, and improves the straightening accuracy of the shaft workpiece. And full-length movement detection can be realized along a linear sliding rail, all parts of the shaft workpiece are covered, and the condition of missing detection of a deformation position is avoided.

The utility model discloses a static off-line seismic data memory protection device which comprises a storage medium body, the outer wall of the storage medium body is connected with a plurality of buffer springs, the outer wall of the storage medium body is connected with a plurality of protection corners in a sliding mode, and each buffer spring is connected with each protection corner in a one-to-one correspondence mode. Each protection corner is rotationally connected with a transmission rod, the four transmission rods are jointly and rotationally connected with a rotating disc, the upper end face of the rotating disc is fixedly connected with a clamping block, the clamping block is slidably connected with a protection plate, the two end faces of the protection plate are connected with push springs correspondingly, and the push springs are connected to the outer walls of the corresponding storage medium bodies correspondingly. According to the static off-line seismic data memory protection device provided by the utility model, through the arrangement of the protection corners and the protection plates, the corners of the storage medium body are protected when the storage medium body is influenced by external force, and the storage medium body is prevented from being secondarily damaged under the cooperation of the push springs.

This invention discloses a cold-resistant, low-smoke, airtight, explosion-proof control cable and its manufacturing method, relating to the field of control cable technology. It includes a central transmission cable with an outer protective rubber layer. The outer protective rubber layer is covered by an inner anti-slip silicone ring, which is further covered by an inner rubber expansion layer. A side-guided inner tube is located outside the inner rubber expansion layer. This invention utilizes a flexible expansion airbag and an adjustable isolation box with a linked internal and external pressure-stabilizing structure to maintain the internal air pressure of the control cable within a suitable range during use. This allows for rapid sealing and protection of the damaged area after external damage, preventing internal damage or electrical sparks caused by external impurities after the outer sheath is damaged. This effectively improves the explosion-proof capability and safety of the control cable.

According to the underwater emergency cable cutting device, a movable cutter is hydraulically driven to be matched with a fixed cutter to form a shearing pair, the shearing mechanical performance is optimized, the cutting efficiency of a composite cable is improved, a gradual closed shearing force field can be formed during shearing due to the design of an arc-shaped cutting edge of a crescent cutter head, and acting force is evenly distributed along the section of a cable; the cable is especially suitable for a composite cable structure in which an outer sheath and inner tensile fibers are mixed. The guide mechanism forcibly restrains the motion trail of the moving cutter head, it is ensured that the cutting edge is closed along a preset path all the time in the shearing process, precise shearing path control is achieved, and secondary damage is avoided; the self-adaptive cable diameter guide-hydraulic linkage control and guide chute integrated pressure feedback module adjusts the output pressure of the hydraulic system in real time. The limitation of a traditional disposable gunpowder or pull pin type device is broken through, and a modularized shearing unit and a quick reset oil cylinder are designed.

This utility model relates to the field of stone crushing and collection technology, and discloses an integrated device for stone crushing and collection, including a main body assembly. A guide assembly is provided at the top of the main body assembly, and a crushing assembly is provided at one end of the main body assembly. The guide assembly includes a guide tube, one end of which is fixedly connected to the top of the main body, and a guide support is fixedly installed at the other end of the guide tube. A groove is formed inside the guide support. The crushing assembly includes a connecting tube, one end of which is fixedly connected to the top of the main body. An ultrasonic generator vibrates and crushes the stones, while the guide tube, in conjunction with the guide support, collects and guides the crushed stones, allowing them to be expelled from the body. This integrated crushing and collection avoids the inconvenience of rinsing after crushing, thus integrating stone crushing and collection and preventing secondary damage caused by insertion into the tube.

The invention discloses a method for eliminating internal stress of a large-scale polycrystalline diamond block material. The method comprises the following steps that the block material is placed in a vacuum heat treatment furnace; carrying out vacuumizing and gas washing operation on the furnace chamber so as to remove residual active gas; introducing high-purity protective gas into the furnace and maintaining positive pressure; executing a stepped heating and heat preservation process: firstly, heating to a first heat preservation temperature T1 at a first heating rate and preserving heat, and then heating to a higher second heat preservation temperature T2 at a second heating rate and preserving heat; and after heat preservation is completed, the controlled cooling process is executed till the furnace temperature is reduced to the room temperature. A strategy of'stepped heating + long-time heat preservation 'is adopted, firstly, the stress of a part of a high-energy area is preliminarily relaxed at a low temperature T1, and cracking caused by stress concentration due to rapid heating is avoided; then, at a higher temperature T2, sufficient energy is provided for atomic diffusion and grain boundary slippage, and deep and uniform release of the internal stress is achieved. And the method is particularly suitable for large-scale blocks.

The invention discloses a scalpel facilitating waste discharge, and relates to the field of medical instruments. The scalpel facilitating waste discharge comprises a scalpel holder, an outer scalpel assembly and an inner scalpel assembly. The outer cutter assembly comprises an outer cutter pipe, an inner cavity, a waste containing opening, a waste discharging opening and a water spraying module. The inner knife assembly comprises an inner knife tube, a driving module, a first communicating port and a second communicating port; the inner cutter pipe can shield the waste containing opening or be separated from the waste containing opening in the sliding stroke of the inner cutter pipe, and when the inner cutter pipe shields the waste containing opening, the second communicating opening communicates with the waste discharging opening. According to the scalpel, cut tissue chips can be directly discharged from the waste discharge port, the whole scalpel does not need to be taken out, the operation efficiency is improved, and secondary injury to a patient can be prevented; meanwhile, before the scalpel extends into the body of a patient, air in the inner cavity can be emptied through normal saline sprayed out of the water spraying module, and air blockage caused by the fact that the air enters the ventricle is effectively prevented.

The invention discloses an intelligent guidance system and method for shoulder pain rehabilitation, and belongs to the technical field of health information. According to the method, a continuous image sequence of the upper body of a user is obtained, real-time unmarked motion data of the user is generated based on a human body topology model and an optical flow field analysis method, and the unmarked motion data comprises a personal digital skeleton formed by joint angle estimation values and a force grading estimation value. According to the invention, non-interference and personalized rehabilitation monitoring and guiding are realized, the constraint that a physical sensor must be worn in traditional rehabilitation monitoring is eliminated by adopting a pure visual unmarked motion capture technology, and a patient is allowed to train in a completely natural state, so that the comfort and rehabilitation experience of the user are greatly improved, and the rehabilitation effect of the patient is improved. A high-quality data basis is provided for subsequent personalized guidance, and the willingness and compliance of the patient insisting in rehabilitation for a long time are effectively enhanced.

The utility model discloses a kind of smell extraction machines of smell source, including extraction host computer, the extraction host computer includes: shell, its bottom is open;Bottom cover, detachably capped in the shell bottom;Extraction system, housed in the shell, and fixed in the top of the shell;Wherein, the extraction system and the bottom cover between form heat dissipation space, the shell at least one side wall corresponding the heat dissipation space is equipped with heat dissipation hole.The utility model uses above-mentioned structure, can be easily disassembled and overhauled and extraction system, and effectively improve heat dissipation capacity.

A kind of smart kitchen meal box automatic supply device and method, it is related to kitchen equipment field, it includes automatic packing machine, the automatic packing machine is installed with conveying belt and film seat, the conveying belt is slidably installed with multiple meal box supply seat.In the operation process of automatic packing machine, meal box supply seat is triggered to wipe disinfect after each time discharging, avoids meal box cross-contamination risk;When the conveying belt is damaged, meal box supply seat is triggered to pop out reset in the moment of failure through pure mechanical structure, avoid food spilling pollution production line, prevent the failure carrier from being stuck into equipment to cause secondary damage simultaneously.

The utility model relates to the technical field of water bucket abrasion measurement, especially to a kind of profile scanning device for water bucket abrasion depth measurement, which can realize accurate measurement of abrasion depth without disassembling water bucket;It includes mounting seat, scanning component, control component, power supply component and protective housing;The mounting seat includes base and adjusting mechanism, the base is detachably connected with the fixed block, and the adjusting mechanism is installed on the base;The scanning component includes laser transmitter and image collector, and both are installed on the adjusting mechanism and towards adjacent water bucket working surface;The control component includes data processing unit and wireless transmission module, and the data processing unit is respectively connected with the wireless transmission module, adjusting mechanism, laser transmitter and image collector;The power supply component includes rechargeable battery and charging interface, the rechargeable battery is connected with adjusting mechanism, scanning component and control component, and the charging interface is used to charge the rechargeable battery.

The utility model provides a kind of for daily ceramic impact resistance testing device, belong to daily ceramic article testing device technical field. Including: worktop;Sample holder for being arranged on worktop, the bottom, edge or handle for fixing ceramic sample;And impact regulator arranged on worktop, the impact regulator includes height-adjustable support frame and steel ball support rod, support rod is movably arranged on support frame, and support rod end is equipped with detachable steel ball, steel ball is located sample holder side.The utility model device structure is simple, easy to operate, and realizes ceramic handle impact resistance test;Steel ball impact has no swing error, avoids secondary damage;Energy gradient covers daily ceramic actual use scene.

This invention provides an active front hatch cover hinge and a pedestrian protection system, belonging to the field of automotive component technology. It includes: a cover seat with a locking block; a pop-up seat rotatably connected to the cover seat; a locking plate hinged to the cover seat and rotatable about its hinge point on a rotational plane, the locking plate having a locking hook; and a tension spring, one end of which is connected to the locking plate and close to the locking hook, the other end of which is connected to the pop-up seat, the tension spring being inclined to the rotational plane of the locking plate. The advantages of this invention are: the hinge can actively pop open the front hatch before a vehicle collision; the pop-up seat can only unlock by pulling the locking plate through the tension spring when subjected to a lifting force; under normal conditions, the pop-up seat remains locked to the cover seat; and the pop-up release structure of the hinge is reversible and reusable.

The utility model relates to a kind of wound elastic dressing device, the wound elastic dressing device can complete the fixing of the fixed component itself, i. e. the fixed component itself can complete the fixing of the fixed component, so that the wound surface of the fixed component is driven to the wound surface of the fixed component, and the fixing process can be completed by the adhesion of the first magic tape and the second magic tape. In this way, the wound surface can be treated without being adhered to the skin, which eliminates the secondary damage to the wound surface during wound care, so that it can adapt to a larger wound surface. At the same time, since the fixing can be completed without being adhered to the skin, the formation of the adhesive surface with poor air permeability between the product and the skin is avoided, thereby avoiding discomfort on the adhesive surface and improving the use comfort of the product. In addition, different sizes of dressing components can be used for different wounds, which improves the application range of the product.

The utility model discloses an inclination adjusting type turning-over auxiliary device. The device comprises a bottom supporting plate and a top supporting plate. The device is characterized by further comprising a supporting adjusting mechanism arranged between the bottom supporting plate and the top supporting plate. The edge of one side of the bottom supporting plate is rotationally connected with the edge of one side of the top supporting plate. The supporting adjusting mechanism supports the top supporting plate, adjusts the height of the supporting adjusting mechanism and changes the included angle between the bottom supporting plate and the top supporting plate. The top supporting plate is pushed to turn upwards through the connecting rod type supporting adjusting mechanism, so that a patient can be pushed to incline after horizontal insertion is completed, and the effect of assisting in turning over is achieved. Besides, the top supporting plate is driven to turn over in an auxiliary mode through rotation of the screw rod with the self-locking capacity, the force needed by an operator for helping the patient to turn over can be reduced, the top supporting plate can be kept at any angle, and the flexibility and usability of the turning-over auxiliary device are improved.

The invention discloses a firefighting detection unmanned vehicle driven by a multi-degree-of-freedom mechanical arm, and belongs to the technical field of firefighting rescue equipment. The unmanned vehicle comprises a high-strength explosion-proof vehicle body, an explosion-proof direct-drive walking mechanism, a multi-degree-of-freedom operation mechanical arm, a multi-source environment sensing system and an intelligent control system. The mechanical arm has ten degrees of freedom, a six-dimensional force sensor is arranged at a key joint, a quick-change clamp is arranged at the tail end, and fine operations such as door opening and forcible entry can be achieved. The sensing system integrates a laser radar, a binocular camera and a gas sensor and is used for three-dimensional mapping and reconnaissance. The control system can automatically avoid obstacles and drive the mechanical arm to carry out smooth and accurate micro-motion adjustment by fusing vision and force information. The system can replace personnel to enter an extreme dangerous fire scene to execute reconnaissance and disposal tasks, has high maneuverability, environmental perceptivity, fine operation safety and multi-task adaptability, and remarkably improves rescue efficiency and safety.

The application discloses a low-temperature self-adaptive intelligent emergency starting power supply and a control method thereof. The emergency starting power supply comprises an internal energy storage unit, an output interface unit, a working condition sensing unit, a power conversion unit, an active thermal management unit and a microprocessor unit. The control method acquires the real-time internal resistance and static voltage of the target battery and the ambient temperature through the working condition sensing unit, and activates the self-heating function in a low-temperature environment. The microprocessor unit matches the preliminary waveform based on a feature database, and corrects the feature sequence of the optimal discharge waveform by using the real-time internal resistance of the target battery. In the pulse output process, the real-time terminal voltage drop rate of the target battery is monitored in real time, and the duty cycle of the optimal discharge waveform is dynamically adjusted, or the pulse output is terminated. The application realizes a closed loop of sensing, preheating, matching, correction and feedback, improves the starting success rate in an extremely cold environment, and ensures the safety of the equipment and the target battery.

The utility model discloses a kind of treatment probes, it includes probe body, probe body is flexible probe, cavity is formed in the inside of probe body, one end of probe body has opening, opening is communicated with cavity, a plurality of convex structures are arranged on the lateral wall of probe body, convex structure is used to contact with ill place, probe body has first use state and second use state, when in first use state, convex structure is oriented to the outside of probe body, when in second use state, convex structure is oriented to cavity.In first use state, probe body is front use, probe body can be used to stretch into human body, and the inner cavity of human body is contacted by convex structure to realize treatment function;When in second use state, probe body is turned over and uses, probe body is sleeved in ill place, at this time, convex structure is oriented to the inside cavity of probe body, and convex structure can contact the human body part located in cavity, to realize treatment function.

This invention relates to a mixed reality-based flash memory card circuit-assisted repair system and method. In the system, the probe light of an optical coherence tomography (OCT) device is focused onto a flash memory card sample to obtain sample probe spectral data. An image conversion module performs image processing based on the sample probe spectral data to obtain a projected image of the flash memory card circuit. A projection device projects the projected image of the flash memory card circuit onto the surface of the flash memory card to assist in the inspection of the internal circuitry. Applying this invention allows for the rapid and non-destructive acquisition of the internal circuitry of a flash memory card and the projection of the circuit image onto the flash memory card surface for comparison during circuit inspection and repair.

The invention relates to a knee joint rehabilitation training device, which belongs to the technical field of rehabilitation training, and comprises a bearing assembly, a connecting assembly, a connecting arm I, a connecting arm II, a shank assembly, a driving assembly, a damping assembly and an adjusting assembly, the connecting assembly is arranged below the bearing assembly; the first connecting arm is arranged on the connecting assembly in a sliding mode. The second connecting arm is rotationally arranged on the connecting assembly. The shank assembly is rotationally arranged on the first connecting arm and the second connecting arm. The driving assembly is arranged on the connecting assembly, and the output end of the driving assembly is connected with the first connecting arm. The damping assembly is arranged on the connecting assembly and is connected with the driving assembly; the adjusting assembly is arranged on the damping assembly. Impedance training and auxiliary training can be carried out.

The invention discloses a welding device for part machining. The welding device comprises a workbench, a clamping assembly, a welding and grinding assembly and a collecting assembly. The workbench is of a box structure, a guide frame and a threaded lead screw are arranged in the workbench, and the welding and grinding assembly is driven by a servo motor A to move. The welding and grinding assembly comprises a supporting frame, a welding assembly and a grinding mechanism which are integrally designed to achieve welding and grinding integrated operation. The clamping assembly is composed of a driving assembly, an electric telescopic rod C and a clamping mechanism, the position and angle of a workpiece can be adjusted in a multi-dimensional mode, and the clamping assembly is suitable for parts of different specifications. The collecting assembly is a drawing type drawer and is used for collecting machining scraps; and universal wheels with self-locking structures are arranged at the bottom of the workbench, so that the device is convenient to move and fix. The device solves the problems that existing equipment is single in function, poor in clamping flexibility, inconvenient to clean scraps and the like, has the advantages of being high in integration degree, high in machining efficiency, high in adaptability, convenient and fast to use and the like, and is suitable for welding machining scenes of various parts.

This invention relates to a highly stable single-crystal silicon differential pressure transmitter, belonging to the field of differential pressure transmitter technology. It includes a transmitter body with two symmetrically mounted clamping blocks on both sides of its bottom. A diaphragm is located on both sides of the bottom of the transmitter body. The transmitter body also features two sealing components and two replacement parts. This design enables immediate sealing of the pressure transmission channel when the measured medium experiences overload pressure impact, effectively preventing secondary damage to the damaged diaphragm caused by continuous pressure. Simultaneously, it automatically replaces the diaphragm with a new one, ensuring the new diaphragm is always in optimal elastic working condition to maintain stable measurement accuracy. The damaged diaphragm is automatically moved to the external space, allowing for convenient removal and maintenance by personnel without disassembling the entire transmitter body. Ultimately, this achieves continuous and accurate differential pressure measurement without shutting down the equipment, improving the operational reliability and stability of the transmitter body.

This utility model provides a salvage plate structure for an active water rescue robot, belonging to the technical field of water rescue equipment. It includes a split salvage plate, with a grid plate at the top and a support frame at the bottom. Each support frame has a receiving interface on both the left and right sides at its front end. Each receiving interface has a plug-in block on the side furthest from the salvage plate. The receiving interface and the plug-in block are connected and fixed by bolts. A connecting component is provided on the side of the plug-in block furthest from the salvage plate. A protective strip is provided on the side of the connecting component furthest from the salvage plate. This utility model connects the salvage plate to the protective strip through the connecting component, thereby fixing the protective strip to the front end of the salvage plate. When rescuing a person who has fallen into the water, the protective strip will contact the person first, thus avoiding initial contact between the person and the salvage plate and preventing secondary injury to the person.

The application discloses a protective structure for a twisting machine, relates to a fiber twisting device, and aims at overcoming the defects that the protective ring made of metal in the prior art is easy to generate static electricity and wear the fiber, and mainly relates to a protective structure for a twisting machine, which comprises a base, a rotating disc is rotatably connected to the base, a through hole is arranged in the rotating disc, a shell for placing fiber raw materials is arranged on the rotating disc, the fiber raw materials are fixed opposite to the base, rollers are arranged on the upper side of the shell, a traction device for pulling out the fiber raw materials in the shell is arranged, a protective structure is arranged on the outer side of the shell, the side of the protective structure facing the shell is made of insulating material, one end of the fiber raw materials is first threaded through the through hole of the rotating disc, then is threaded out from the bottom of the shell, then is threaded through the gap between the outer side of the shell and the protective structure, and then is connected to the traction device after being threaded around the rollers. The application mainly aims at reducing the wear and the generation of static electricity of the fiber before the fiber enters the traction device.

The utility model discloses a hemostatic device, this hemostatic device includes: elastic fingerstall, elastic fingerstall includes: inner layer finger stall part and outer layer finger stall part, the inner layer finger stall part forms the finger groove, and the finger groove is used for the extension of finger, the outer layer finger stall part is sleeved in the inner layer finger stall part, and the bottom of outer layer finger stall part is connected in the bottom of inner layer finger stall part, and the cavity is formed between the inner layer finger stall part and outer layer finger stall part, and the cavity is used for filling medium, and any one in outer layer finger stall part and inner layer finger stall part is provided with control valve, and control valve communicates with the cavity. Therefore, can realize fast and accurate hemostasis, also can reduce the adhesion of elastic fingerstall and nasal cavity mucosa tissue, also can avoid the secondary injury of elastic fingerstall when taking out from the nasal cavity, has the advantages such as simple operation.

The utility model relates to the technical field of medical instruments, in particular to an integrated reciprocating grinding head for orthopedic surgery, which comprises a cutter component and a power input component which are connected with each other, the power input component comprises a shell and a motor, the motor is mounted in the shell, a water injection pipe is further mounted in the shell, and the water injection pipe is tightly attached to the outer wall of the motor; the cutter assembly comprises a sharpening head, a transmission shaft and a supporting pipe, the transmission shaft penetrates through the supporting pipe and is connected with the sharpening head, the end, away from the sharpening head, of the supporting pipe is located in the shell, and a water injection channel is formed in the supporting pipe and communicates with the water injection pipe; a reciprocating driving part is connected between the transmission shaft and the rotating shaft, and the motor rotates to drive the transmission shaft to swing in a reciprocating mode through the reciprocating driving part. Due to the adoption of the integrated design, the assembly time of the cutter is shortened, the fault risk is effectively reduced, the disinfection and the operation are convenient, and the clean and sterile state of an operation area is favorably kept.