170results about How to "Meet fixed" patented technology

The invention discloses a perforating device suitable for steel tubes with different diameters. The perforating device comprises a base, a clamping device and rolling adjustment devices symmetrically arranged on the front and back sides of the clamping device are arranged at the end face of the top of the base, and a perforating rack is arranged at the position, between the clamping device and the back rolling adjustment device, of the base; a first rolling groove and a second rolling groove which are arranged in a bilateral symmetry manner are arranged in each rolling adjustment device, a separating plate is arranged between each first rolling groove and the corresponding second rolling groove, the first rolling grooves and the second rolling grooves are each internally provided with a bearing piece, and the bearing pieces on the left and right sides are each internally provided with rollers with taper face sides oppositely arranged; a lifting sliding cavity is arranged in the clamping device in a manner of being communicated with the base at the bottom of the clamping device, and a lifting sliding piece is arranged in the lifting sliding cavity; and through grooves are symmetrically arranged on the left and right sides of the top of the clamping device, and a driving sliding cavity is arranged in the lifting sliding piece. The perforating device is simple in structure and convenient to operate, and the perforating accuracy and stability are improved.

The invention discloses a flexible assembling fixture, which comprises a working platform, a positioning flat ruler arranged on the working platform, a height positioning rod and a bearing fixture block, wherein the working platform is provided with a plurality of rows of mounting hole sites transversely and longitudinally; the positioning flat ruler is provided with a bar sliding site hole and a positioning round hole, and the positioning flat ruler is moveably connected with the mounting hole sites through the sliding site hole; the height positioning rod comprises a fixed rod of which the bottom is inserted in the positioning round hole and an adjusting rod movably sleeved in the fixed rod, the fixed rod is provided with a locking mechanism and is locked with the adjusting rod through the locking mechanism, and the other end of the adjusting rod is also provided with a limiting groove; and the bearing fixture block is connected with the adjusting rod and is used for bearing and blocking a pipe workpiece. The flexible fixture has the advantages of reducing the laser cutting quantity, saving the cost, achieving the functions of fast positioning, fast switching and the like, improving the working efficiency, having simple structure and convenient operation, and reducing the workload for manufacturing a sample fixture.

The invention discloses a welded steel pipe welding groove flatly-cutting device capable of being stably fixed. The device comprises a base, a lower rack, an upper rack, a left clamping block, a rightclamping block, a movable sliding frame, a driving motor, a cam and a cutting motor. The other end of a first telescopic rod is in threaded connection with the left clamping block, one end of a second connection rod is in threaded connection with a second telescopic rod, the other end of the second telescopic rod is in threaded connection with the right clamping block, an output shaft of the driving motor is provided with the cam forwards through interference fit, the movable sliding fame is installed on a second supporting column in a sliding mode, a cutting motor is fixedly installed insidea fixing support, and an output shaft of the cutting motor is connected with a cutting wheel. The left clamping block and the right clamping block are arranged to achieve the effect of clamping a steel pipe, the steel pipe is prevented from being shifted in the cutting process, on one hand, cutting precision can be ensured, on the other hand, the steel pipe can be prevented from being popped outto injure people in the cutting process, and therefore operation safety is greatly improved.

The invention relates to a test device used for simulating collisions of a cell pack bottom of an electric automobile. The test device comprises a device body. The device body comprises a collision trolley and a cell pack fixing seat. The test device is characterized in that the test device also comprises a collision component connected with the front end part of the collision trolley, a ramp under a cell pack, a trolley traction rail longitudinally arranged on the ground, and trolley buffering components which are arranged between the collision trolley and the cell pack fixing seat and on two sides of the middle part of the trolley traction rail. According to the invention, the process that the cell pack bottom suffers the collision from the bottom of the automobile in a real automobile moving process can be quite truly and precisely simulated; fixation of different sizes of cell packs can be achieved; collision tests for different positions of the cell pack bottom can be performed according to experiment requirements; the test device is highly adaptive and universal without complex control systems, and operates stably and reliably; and the whole device can be disassembled and assembled repeatedly, and is easy to reconstruct and maintain, high in intensity and low in cost and risks in the aspect of the real automobile collisions.

The invention discloses a medical liquid containing tank. The medical liquid containing tank comprises a tank body and a top cover; the top cover is installed on the top of the tank body; a base is installed at the bottom of the tank body; a second clamping block is installed on the lower surface of a screw rod; a first clamping block is installed on the inner side of the second clamping block, and is connected with the base; the outer wall of the screw rod is provided with a plurality of inserting grooves; a connection rod is installed in an inner cavity of the screw rod; and a first spring is installed in an inner cavity of the connection rod. According to the medical liquid containing tank, when it is needed to fix the tank body, the tank body is placed on the base, a screw sleeve is twisted to be made to rotate, the screw rod is driven to move towards the inner side, after the screw rod moves towards the inner side to make an ejecting block clamp the tank body, twisting stops, and the purpose of fixing the tank body is achieved; and if the size of the tank body does not meet the existing movement range of the ejecting block, the connection rod is pulled to adjust the position of the ejecting block, the purpose of fixing tank bodies in various models is achieved, the overturning or spilling phenomenon is prevented, and convenience is brought to medical care.

The invention provides a rail clamping device, which is used for fixing a locomotive traction positioning device on a steel rail. The rail clamping device comprises two clamping plates which are arranged oppositely and used for clamping the steel rail, and bolts which pass through the two clamping plates, wherein one end of each bolt is sleeved with a nut; the shapes of inner side faces of the two clamping plates are matched with the shape of the steel rail; the lower ends of the two clamping plates are provided with barbs which face the steel rail; and the two barbs are clamped to the steel rail. The invention also provides a locomotive traction positioning system with the rail clamping device. A platform can be fixedly connected with the steel rail through the rail clamping device, so that the locomotive traction positioning device and the steel rail which are fixedly arranged on the platform can be reliably and fixedly connected; and the rail clamping device can be fixed at any position of the steel rail, so that the locomotive traction positioning device can be fixed at any longitudinal position of the steel rail, and can be fixed at any position of locomotives with different lengths and carriage numbers.

The invention discloses an anti-dumping transfer forklift for boiler equipment, which comprises a forklift body. The forklift body includes a vehicle frame. Traveling wheels are installed under the vehicle frame. The cargo fork is characterized in that the top of the cab is connected with a horizontal safety bracket, and the safety bracket is located above the cargo fork. The safety bracket includes a horizontal cross bar and a baffle vertically connected to the end of the cross bar. Between the cross bar and the baffle Connected by vertical rods, the horizontal rods and vertical rods are telescopic rods. The forklift of the present invention, by setting a simple safety bracket, can realize the fixing of the goods during the handling process, is easy to use, greatly improves the safety of the work site, and also ensures that the goods are not damaged, and can be adjusted by adjusting the crossbar The length of the vertical bar can meet the fixing of goods of different sizes.

The invention belongs to the field of culture simulation experiment research on cold spring high-pressure large organisms or microorganisms, and particularly relates to a high-pressure temperature-control simulated culture device for deep sea cold spring organisms and a using method of the high-pressure temperature-control simulated culture device. The simulated device comprises a mixing cabin, a high-pressure cabin, a high-pressure filter device and various valve bodies which are connected through high-pressure pipelines. In the high-pressure cabin, a deep-sea high-temperature or low-temperature high-hydrostatic-pressure environment is realized through high-pressure pumps and a temperature control system, and besides, the culture, enrichment and fixation technology of large organisms and microorganism thalli under high pressure is realized through an enrichment filtering device and a fixing device. A culture device and the enrichment filtering device can be externally expanded, and most of materials are high in corrosion resistance, low in cost and adjustable in size.

The invention provides a circuit board processing and fixing tool which comprises a bottom plate. The left end of the top surface of the bottom plate is fixedly provided with a left support plate, and the right end of the top surface of the bottom plate is movably provided with a right support plate. The top ends of the left support plate and the right support plate are provided with baffle plates, and brackets sleeve the outer sides of the left support plate and the right support plate under the baffle plates. According to the circuit board processing and fixing tool, a circuit board is inserted from the front ends of the two support plates before welding the circuit board, through rotating a second locking bolt, the degree of tightness between the second locking bolt and a damping pad is adjusted, thus the sliding adjustment of the distance between the two support plates and the fixation of the position of the right support plate are facilitated, and the length of the circuit board is satisfied by the distance between the two support plates. Through adjusting the heights of the brackets, the circuit board is fixed between the baffle plates and the brackets, the influence of the shaking of the circuit board on welding efficiency is avoided, the lengths of the brackets can be changed through a movable frame structure, and the distance between left and right brackets is changed when the distance between the two support plates is adjusted.

The invention relates to the technical field of fixing damping seats, in particular to a fixing damping seat for vehicle-mounted intelligent equipment. Supporting plates are fixed to the two ends of the upper side in a damping box correspondingly, the upper sides of the two supporting plates are provided with inserting plate grooves correspondingly, inserting plates are inserted in the two inserting plate grooves correspondingly, and the two inserting plates are limited through limiting mechanisms correspondingly; the positions, on the lower side of the two inserting plates, of the inserting plate grooves are internally provided with third springs correspondingly, limiting holes are formed in the corresponding sides of the two inserting plates correspondingly in fixing and penetrating modes, and the two limiting holes are internally provided with threaded cylinders; the positions, on the outer sides of the two limiting holes, of the inserting plates are provided with annular grooves, the outer sides of the two threaded cylinders are sleeved with limiting rings correspondingly, and the two threaded cylinders are internally provided with threaded rods correspondingly; and the two threaded rods penetrate through a storing box and extend into the storing box, extruding plates are fixed to the corresponding sides of the two threaded rods correspondingly, the positions, on the lowersides of the two extruding plates, of the storing box are provided with sliding rails correspondingly, and sliding blocks are fixed to the lower sides of the two extruding plates correspondingly. According to the fixing damping seat for the vehicle-mounted intelligent equipment, the vehicle-mounted intelligent equipment can be fixed, and the good damping effect is achieved.

The invention discloses a shelf for placing finished products in the glass manufacturing process, comprising a base and two shovels arranged at the bottom of the base, a support shaft is provided on the top of the base, a support plate is provided on the support shaft, and the support plate Can rotate around the support shaft, the top of the support plate is provided with two baffles, the baffles are respectively located on both sides of the axis of the support plate, the side of the baffle is provided with a cross bar, and the cross bar can move on the baffle , the crossbar is provided with a second movable rod, the second movable rod can move in the crossbar, the second movable rod is also provided with a second claw, the crossbar is also provided with a fixed block, and the fixed block The first movable rod is provided with a fixed element and a first claw; the top of the support plate is also provided with a bump, and an elastic element is arranged on the bump, and a movable block is arranged on the elastic element . The invention can fix the glass and prevent the glass from falling when the glass is transported.

The invention relates to the technical field of loading platforms and in particular relates to a manual size varying loading platform of a liquid crystal panel. The manual size varying loading platform of the liquid crystal panel comprises a bottom plate, wherein the bottom plate is provided with a left side sliding assembly and a right side sliding assembly, which are arranged in parallel; a panel upper side supporting assembly and a panel lower side supporting assembly are vertically connected between the left side sliding assembly and the right side sliding assembly; a panel left side supporting assembly and a panel right side supporting assembly are vertically connected between the panel upper side supporting assembly and the panel lower side supporting assembly. The manual size varying loading platform of the liquid crystal panel, provided by the invention, is simple in structure, convenient to operate and low in cost, and can be rapidly adaptive to detection requirements of liquid crystal panels with various sizes.

The invention discloses a universal tool for welding a passenger car top cover framework. The universal tool comprises a tool bottom frame main body, a pair of linear guide rails, a plurality of guiderail sliding blocks, a plurality of positioning module assemblies, a plurality of positioning clamping blocks and a module positioning unit. According to the welding tool, the positions of the positioning module assemblies are rapidly switched on a sliding guide rail assembly and are fixed, so that the rapid adjustment of positioning modules in the length direction of the car is realized, and positioning of top cover framework of car model of the same series with different lengths; the positioning module assemblies of different shapes can be quickly replaced so that the modular replacement operation of the tool can be realized, the fixation of different series of car model frameworks can be met, the production efficiency can be improved to a certain extent, and reasonable operation is realized; kidney-shaped holes are formed in the positioning module assemblies, so that the size fine adjustment of the positioning modules in the width direction of the car body is realized; and meanwhile, the modular replacement operation of the tool is realized, and welding of different series of car model frameworks is achieved.

The invention discloses a semiconductor packaging mold. The mold comprises a semiconductor chip and an installation plate. The semiconductor chip is arranged in an installation groove of an upper endof a substrate and is fixed through a clamping mechanism in the installation groove. An open groove is arranged in the middle of the installation plate. A positioning groove is arranged in a lower endof the installation plate. A positioning embossment of a side edge of the substrate is clamped in the positioning groove. Pins are connected to insertion ports of two ends of the installation plate.One end, extending into the open groove, of each pin is connected to the semiconductor chip through a lead, two sets of transverse supporting mechanisms are connected between a front side wall and a rear side wall of a protection ring, an outer side of the protection ring is covered by a packaging cover, and a protruding ring integrally formed with the packaging cover is arranged on the lower endof the packaging cover in a circle. In the invention, rapid fixation of the semiconductor chips with different sizes is satisfied; and heat dissipation of the semiconductor chip is facilitated, a service life of the semiconductor chip is prolonged, and the semiconductor chip is protected in all directions.

The invention relates to a gear reducer running-in test device, which comprises a base, a three-dimensional platform, a servo motor, a gear transmission pair, a torque sensor and a brake, wherein the three-dimensional platform is arranged at one side above the base; the three-dimensional platform is provided with a frame; the servo motor is fixedly arranged on the outer side wall of the frame; the frame is internally fixed with a to-be-tested reducer; the input end of the to-be-tested reducer is in transmission connection with the output end of the servo motor; the gear transmission pair is arranged inside the frame; the gear transmission pair is engaged with an output gear of the to-be-tested reducer; the central hole of the gear transmission pair is fixedly connected with one end of a transmission shaft; a supporting seat is also arranged at the other side above the base; the middle part of the transmission shaft is arranged on the supporting seat via a bearing in a rotating mode; the other end of the transmission shaft is provided with a brake for simulating a load; and the middle part of the transmission shaft is also provided with the torque sensor for detecting the output torque. The gear reducer running-in test device can be applied to running-in test on various reducers, and has the advantages of high-efficiency test, and high test accuracy.

The invention discloses a height and angle adjustable suspension type television rack for an intelligent flat television. The television rack comprises a fixing plate, a connecting arm connected with the lower end of the fixing plate, and a fixing rack arranged at the lower end of the connecting arm, wherein the fixing rack consists of a rectangular frame body and two vertical hanging rods; hooks fit with an upper frame body part of the rectangular frame body are arranged at the upper ends of the vertical hanging rods; external threads are formed in the lower ends of the vertical hanging rods; the lower ends of the vertical hanging rods are sleeved with L-shaped block pieces, and fixing nuts fit with the external threads in the lower ends of the vertical hanging rods; a plurality of through grooves to be fixed with the intelligent flat television are formed in the vertical hanging rods; the lower end of the connecting arm is in shaft connection with the rectangular frame body; the connecting arm consists of an upper connecting arm section and a lower connecting arm section; the upper connecting arm section is connected with the lower connecting arm section in a sleeving manner; locating holes are formed in the upper connecting arm section; and a locating pin fit with the locating holes is arranged at the lower connecting arm section. With the adoption of the television rack, the height and angle of the intelligent flat television can be adjusted, and the television rack is very convenient. The television rack can meet the fixing requirements of televisions in different sizes. A flowerpot can be placed on the television rack, so that the television rack has the functions of increasing a space utilization ratio and beautifying the environment.

The invention discloses machining auxiliary equipment suitable for petroleum pipes with different sizes. The machining auxiliary equipment comprises a base; a first chute is formed in the top of the base; two first slide blocks are arranged in the first chute; clamping plates are arranged at the tops of the first slide blocks; a movable block is arranged at the top of the base, and can move on thebase in the horizontal direction; a groove is formed in the top of the movable block; a stand column is arranged in the groove; a rotating shaft is arranged on the movable block, and is provided withtwo third fixed rings; the third fixed rings are connected with the rotating shaft through threads; the two third fixed rings are positioned on the two sides of the movable block; a movable block isarranged on the stand column, sleeves the stand column, and can move in the axial direction of the stand column; two cross bars are arranged on the side surface of the movable block, and are separately positioned on the two sides of the axis of the movable block; a transverse plate is arranged between the two cross bars; a through hole is formed in the top of the transverse plate; and clamping elements are arranged on the two sides of the through hole.

The invention provides a device for removing aluminum sticking to a hub mold. The purposes that cleaning fluid is stable in concentration, a cleaning pool is not damaged, and use is more convenient are achieved. The device comprises a frame (1) and the cleaning pool (2) located in the frame (1). The device further comprises a backflow cover (6) and a clamping mechanism. The frame (1) is provided with an ultrasonic transmitter located below the cleaning pool (2). The backflow cover (6) is installed on the frame (1). The clamping mechanism comprises a connecting column (19), a lower clamping plate (18) connected with the connecting column (19) through threads, and an upper clamping plate (17) which slides in the length direction of the connecting column (19) and is located above the lower clamping plate (18). The lower clamping plate (18) is provided with a first kidney-shaped groove (22) and a second kidney-shaped groove (23). The first kidney-shaped groove (22) and the second kidney-shaped groove (23) are each provided with at least one lock bolt (24) in a sliding mode.

The invention discloses a comprehensive test device for a pair of pliers and a pair of nippers, and belongs to the technical fields of product quality detection and metering calibration testing. The device comprises a cabinet, wherein a working platform is arranged at the top of the cabinet; a pliers fixing mechanism, a pliers pressure mechanism and a pliers torsion mechanism are assembled on theworking platform; a bending-resistant test piece clamping component, a pliers rotating shaft clamping component and a pliers handle supporting component of the pliers fixing mechanism and the workingplatform are disassembled and assembled quickly, the distance between the three components can be flexibly adjusted to be adapted to tests of pliers with different types and specifications, and the three components can be mutually combined and used; and the bending-resistant test piece clamping component, the pliers rotating shaft clamping component and the pliers handle supporting component of the pliers fixing mechanism and the working platform are disassembled and assembled quickly, the distance between the three components can be flexibly adjusted to be adapted to tests of pliers with different types and specifications, and the three components can be mutually combined and used.

The invention discloses a guide type edge tool box storage device. The device comprises a box body, a powerful sucking disc, a guide hole, a relief groove, a compression bar, a clearance cavity, a first spring, a wedge block, a guide rod, a fixing shaft, a knife groove, a blade, a placement groove, a placement box, a rotating shaft, a guide groove, a second spring, a push plate, an edge tool box,a gear sleeve and a gear. The guide type edge tool box storage device has the advantages that the structure is ingenious, the function is powerful; the guide type design not only can improve the security of edge tool cast to reduce the occurrence rate of profession exposure, but also achieves the separation cutting of an edge tool connecting device due to the cooperation effect of a built-in edgetool separation mechanism, thereby improving the convenience of the operation; the combined type design has the advantages that the fixation is easy, the detachment and replacement are convenient, thedevice can be ensured to be used continuously, and finally very good purposes of clinical promotion and application are achieved.

The invention discloses a multifunctional skin flap tractor for being used during mammary surgery. The multifunctional skin flap tractor comprises a handle sleeve, a Y-shaped adjusting rod, a first pull rod, a second pull rod, a first air cushion sleeve, a second air cushion sleeve, a connecting pipe, a connector, an air injection pipe, an adjusting valve and an inflation balloon. The multifunctional skin flap tractor is ingenious in structure and powerful in function; through action of a Y-shaped traction structure, traction range can be widened, and visual field can be expanded; through matched action of air cushion wrapping protection, so that the multifunctional skin flap tractor causes small damage to tissue and can bring convenience to medical staff to operate. Therefore, the multifunctional skin flap tractor is conducive to clinical popularization and application.

The invention discloses multi-angle cutting equipment for wood processing, and a working method thereof. According to the multi-angle cutting equipment, through adjustment of the cutting angle is completed by adjusting the inclination angle of a cutting blade and the angle of a cutting base, the adjustment of the cutting angle is diversified and convenient, and the two sides of wood are clamped before cutting; the requirement for fixing wood in different sizes can be met, and a conveyor motor II is matched with a lead screw to drive a conveying plate to horizontally move along a supporting base, so that the position of the wood is adjusted; the structure set facilitates adjustment of the cutting position of the cutting blade for the wood; through arrangement of two wood conveying mechanisms and two wood handling mechanisms, the wood can be efficiently conveyed and handled before and after cutting, and the whole process does not involve participation of workers; and the automation degree is high, and the purpose of the multi-angle cutting equipment can be achieved through the following technical scheme.

The invention discloses a fixing device for a noise measurement microphone and a fixing method thereof. The fixing device comprises an elastic band (2) connected with a vehicle body and a clamping device (1) used for fixing the microphone on the elastic band (2), wherein the elastic band (2) is long strip-shaped, and provided with self-coupling viscose cloth at the two ends; and the clamping device (1) comprises a clamp (11) and a buckle (12) being integrally connected with the clamp (11) and fixed on the elastic band (2). With the structure, the fixing device for the noise measurement microphone can adapt to headrest lengths of the various vehicles by adjusting the bonding position of the self-coupling viscose cloth, and can adjust the tensioning force, and the position of the microphone can be adjusted by moving the microphone clamping device back and forth on the elastic band and adjusting the fixing position of the elastic band on a headrest, so that the universality of the fixing device is increased, and the fixation of all testing points in various vehicles can be achieved.

The invention discloses a horizontal duct wall penetrating system and a construction method thereof. The horizontal duct wall penetrating system comprises a duct assembly, a fixing ring and a sealinglayer; the duct assembly horizontally penetrating through the wall and includes a duct, a casing arranged on the outer side of the duct in a sleeving mode, and a connecting assembly that connects theduct to the casing fixedly; the length of the casing is adapted to the thickness of the wall, and a gap is reserved between the casing and the duct; a fireproofing plugging material is filled in the gap; the connecting assembly include a bolt, an outer washer and an inner washer; the bolt is arranged in the casing, the fireproofing plugging material and the duct in sequence in a penetrating mode;the outer washer is arranged between the outer wall of the casing and the bolt in a laid mode, and the inner washer is arranged between the inner wall of the duct and the bolt in a laid mode; and thefixed ring is arranged on the duct in a sleeving mode, the duct is fixed to the inner side face of the wall, and the sealing layer is sealed on the outer side of the fireproofing plugging material. Bymeans of the horizontal duct wall penetrating system, the technical problems that when a traditional duct is installed, the danger is high, the labor consumption is high, the casing is easily pressedto be broken, and the plugging effect is not good.

The invention provides a dynamic balance adjustable cutter handle, and relates to the technical field of numerical control machine tool processing. The dynamic balance adjustable cutter handle comprises a main shaft connecting end, a cutter connecting end, a gravity center adjusting part and a gravity center adjusting piece, wherein the main shaft connecting end and the cutter connecting end are coaxially connected; the gravity center adjusting part is arranged on the outer edge of the cutter connecting end; the gravity center adjusting piece is arranged in the gravity center adjusting part; and by changing the gravity center position of the gravity center adjusting piece, the gravity center of the whole cutter handle can be adjusted. According to the dynamic balance adjustable cutter handle provided by the invention, by utilizing the cooperative installation of the gravity center adjusting part and the gravity center adjusting piece, an effect on dynamically balancing the gravity center of the whole cutter handle can be achieved, the dynamic balance of machining by a machine tool is realized, and the processing accuracy of a workpiece is improved.

The invention relates to a shoulder joint abduction fixation orthotic device. The shoulder joint abduction fixation orthotic device comprises a forearm support frame, a C-shaped upper arm bracket, anarmpit support frame, a line-shaped armpit movable shaft and an adjustable support. The forearm support frame, the C-shaped upper arm bracket and the armpit support frame are integrally formed and used for supporting the forearm, the upper arm and the armpit on one side respectively, the line-shaped armpit movable shaft is arranged between the C-shaped upper arm bracket and the armpit support frame, and the adjustable support with one end connected with the C-shaped upper arm bracket and the other end connected with the armpit support frame is used for adjusting the shoulder joint abduction angle. The shoulder joint abduction fixation orthotic device can effectively overcome the defects of an existing orthotic device and ensure the postoperative effect of shoulder periarticular operations.

The invention discloses an automatic turnover type knife grinder. The grinder comprises a bottom plate, a top plate and a grinding mechanism. A supporting plate is composed of two supporting guide plates and one transition plate, the two supporting guide plates form a right angle in the horizontal direction, continuous racks are evenly distributed on the same side of the two supporting guide plates and the transition plate, a driven shaft is fixed to the upper end of the transition plate, the top end of the driven shaft is fixedly provided with a clamping mechanism, the grinding mechanism comprises a driving shaft, a sand wheel, a first driving gear and a second driving gear, the sand wheel, the first driving gear and the second driving gear are sequentially fixed to the driving shaft fromtop to bottom, a dual-way motor is fixed to the bottom end of the driving shaft, the second driving gear is jointly matched with the racks on the side wall of the supporting plate, two faces of a blade can be ground while the sand wheel can move to one end of the other supporting guide plate from one end of one supporting guide plate, grinding efficiency is improved, meanwhile, in the moving process, the blade can be automatically turned over, and the effect of dual purposes through one measure can be achieved.