51results about How to "Not easy to shift position" patented technology

The invention discloses a device for detecting the flatness of a liquid crystal display screen frame. The device comprises an operation platform, an electromagnetic slide rail, a fixed baffle, a motor, a screw rod, a slide rod, a controller and a fixed base and is characterized in that fixed rods are vertically mounted at the four corners of the top end of the fixed base, the operation platform istransversely mounted at the top ends of the fixed rods, the controller is mounted in the middle of one side of the operation platform, and the fixed baffle is vertically mounted on one side of the top end of the operation platform. The device has the advantages that the device is provided with the motor, the screw rod, a second bearing block, a threaded slide sleeve, a threaded slide sleeve shelland an infrared range finder, the motor drives the screw rod to rotate when the device is used, the threaded slide sleeve rotates to drive the threaded slide sleeve shell and the infrared range finder to move so as to measure the distance between the liquid crystal display screen frame and the infrared range finder to check whether the liquid crystal display screen frame is flat or not, and the device is simple in structure and convenient and efficient to operate.

The hub cap has first end wall portion, a sidewall portion and a laterally extending mounting flange. There are plural fastener-receiving openings in the flange. A second endwall portion is integrally formed on the flange and is free from engagement with the hold-down ring. The second end wall portion has a plurality of integral retainers of reduced diameter with respect to the remainder of the wall. There is a hold down ring made from a stiff metal material, overlying the flange on the hub cap. The hold down ring has plural fastener-receiving openings therein, and the retainers snugly secure the hold-down ring in its installed position.

The invention discloses efficient powder mixing equipment, which belongs to the field of mixing equipment, the invention discloses the efficient powder mixing equipment, which comprises a mixing equipment body with an upper cover, wherein a stirring structure for uniformly mixing materials is arranged in the mixing equipment body; at least one group of scraping pieces for preventing materials frombeing easily attached to the inner wall of the mixing equipment body are also arranged in the mixing equipment body; the scraping piece is arranged, on one hand, materials attached to the inner wallof the mixing equipment body in the stirring process can be scraped off, on the other hand, a stirring area of the stirring rod can be further increased, material stirring is more sufficient, the stirring efficiency is improved, meanwhile, a vibration part is arranged; so that vibration is generated between the vibration part and the material mixing equipment body, the relative positions of part of materials can be changed while the materials splashed to the inner wall of the material mixing equipment body in the stirring process are shaken off, the materials are mixed more uniformly, the material mixing efficiency is improved in the process, and the production cost is saved.

The invention relates to a transmission and distribution cable receiving device, particularly to a photovoltaic panel assembly receiving and winding device for a power transmission and distribution cable. The photovoltaic panel assembly receiving and winding device is capable of carrying out receiving and winding by a photovoltaic panel assembly and adjusting the angle of the photovoltaic panel assembly to collect the sunlight. The photovoltaic panel assembly receiving and winding device comprises a bottom plate, a motor, a bevel gear, a receiving and winding mechanism, a storage battery, a connecting rod, and a photovoltaic panel assembly body and the like. The motor is installed at the left side of the top of the bottom plate; the bevel gear is connected to an output shaft of the motor; and the receiving and winding mechanism is arranged in the middle of the top of the bottom plate. With the receiving and winding mechanism and a moving mechanism, a cable can be received and wound compactly, thereby saving the space and taking down a receiving-winding cylinder with winding completion.

A high-speed spring bagging machine comprises a delivering mechanism, a conveying mechanism and a vertical welding mechanism. The high-speed spring bagging machine is characterized in that the conveying mechanism is provided with a left conveying arm and a right conveying arm, the delivering mechanism is arranged at the front end of the conveying mechanism, the vertical welding mechanism is arranged at the rear end of the conveying mechanism, spaces are reserved between the conveying mechanism and the delivering mechanism and between the conveying mechanism and the vertical welding mechanism, and the delivering mechanism, the conveying mechanism and the vertical welding mechanism are sequentially arranged and fixed to a rack. According to the conveying mechanism, a single motor is adopted for driving a transmission shaft, the welding width of non-woven fabric can be set, the manufacturing and the replacing of a non-woven fabric guiding mold are reduced, meanwhile, the speed for conveying springs is increased, and the yield of bagging the springs is improved. A parallel quadrangle double-crank mechanism is adopted for the delivering mechanism. More springs can be delivered in the spring bagging machine a short time. A single-motor is adopted in the vertical welding mechanism to drive a crank sliding block mechanism, the movement travel is effectively shortened, the design and packaging are simplified, electricity consumption is reduced when the spring bagging machine is used, noise is reduced, and the working environment is improved.

The invention discloses an anti-fracture dry-type transformer winding structure and a using method thereof, which belong to the technical field of dry-type transformers. The anti-fracture dry-type transformer winding structure comprises a rack, a controller is arranged on the back face of the rack, and the upper surface of the rack is fixedly connected with the lower surface of a top plate. According to the structure, the connecting shaft drives the fixing disc to rotate, the fixing disc drives the wire mold frame to rotate, meanwhile, the driving gear drives the driven gear to rotate, and after a single-layer wire is wound on the wire mold frame, the front sector tooth is separated from the toothed bar, and the rear sector tooth is meshed with the toothed bar, and thus, the rear sector teeth can drive the gear rod and the box body to move downward during rotation, in the same way, the box body and the two guide wheels sequentially move up and down in a reciprocating mode, the wire mold frame continuously rotates, compared with a traditional winding mode, the purpose of uniform winding is effectively achieved, the winding position can be automatically adjusted, a wire is not prone to deviating after being wound, the stability is improved, and the normal use of the dry-type transformer is prevented from being influenced.

The invention discloses a workpiece multi-stage positioning device applied to a numerical control milling machine, and belongs to the technical field of workpiece positioning. The workpiece multistage positioning device comprises a base, a through hole is formed in the upper surface of the base, a two-way threaded rod is arranged in the through hole, the two ends of the two-way threaded rod are rotatably connected to the two sides of the inner wall of the through hole through bearings, the outer surface of the two-way threaded rod is in threaded connection with two threaded caps, and the upper surfaces of the threaded caps are fixedly connected with the lower surface of a pushing and pressing assembly. According to the workpiece multi-stage positioning device applied to the numerical control milling machine, the threaded rod, the threaded caps, an air guide plate, a pressing plate, push plates, a first piston plate, a second piston plate and a pressure valve are arranged, the two push plates can limit the two sides of a workpiece, and compared with traditional repeated operation, by means of the scheme, the burden of workers is relieved, the purpose of multi-stage positioning of the workpiece is achieved, the workpiece is not prone to deviation in the machining process, and the machining precision of the workpiece is improved.

The invention discloses ultra-thin wall metal filtering pipe fitting bottom drilling equipment, and belongs to the technical field of mechanical drilling. According to the ultra-thin wall metal filtering pipe fitting bottom drilling equipment, a plurality of arc-shaped positioning blocks capable of moving up and down are arranged on a pipe fitting positioning plate and matched with a plurality ofarc-shaped positioning cavities, and a plurality of pipe fittings to be drilled are positioned without manual positioning, so that the limiting effect is good, and the pipe fittings are not prone to position deviation caused by drilling in the drilling process; in addition, an electric drilling device at the driving end of a mechanical arm can flexibly drill the end parts of the pipe fittings withdifferent diameters and straight lengths through a movable seat electrically sliding on an operating platform, and the electric drilling device can densely drill the end surfaces of the pipe fittingsunder the automatic control of the mechanical arm; and after drilling the pipe fittings, the pipe fittings on a pipe fitting positioning plate is easy to fall into a receiving box through the rotaryinclined operation of the pipe fitting positioning plate without manual blanking, so that the working efficiency is effectively improved to a certain extent.

The invention relates to an automatic display panel spraying processing system which comprises an ink jet assembly, the ink jet assembly comprises an ink jet moving assembly and an electric atomization nozzle module, and the ink jet moving assembly drives the electric atomization nozzle module to move in a horizontal plane; the conveying assembly comprises a bearing table and a conveying driving part, and the conveying driving part drives the bearing table to move in the printing direction; the mask assembly comprises a mounting frame and a mask plate; wherein the substrate moves to the position under the mask plate along with the bearing table, and the electric atomization spray head module conducts electric atomization spray printing on the substrate above the mask plate. According to the application, the mask plate covers the surface of the substrate, and the functional liquid is sprayed to the mask plate by using the electric atomization nozzle module, so that the functional liquid is arranged at the corresponding position of the substrate, and all pixel grids of the substrate do not need to be printed one by one; the adhesion position of the functional liquid on the substrate is not easy to deviate, and the condition that part of pixel grids are missed to be printed is not easy to occur, so that the processing efficiency of the substrate is improved.

The invention discloses a graphite polyphenyl granule novel composite insulation board production line, and belongs to the technical field of insulation board production, the graphite polyphenyl granule novel composite insulation board production line comprises a supporting bottom plate, the upper surface of the supporting bottom plate is fixedly connected with the lower surface of a supporting plate through supporting legs, and the rear portion of the upper surface of the supporting bottom plate is fixedly connected with the lower surface of a connecting baffle; and the front face of the connecting baffle is fixedly connected with the back face of a top plate. According to the device, by arranging a transmission roller, a pressing roller, a glue scraping assembly, a discharge valve and a handle, the handle can be held to move back and forth to clean materials overflowing from the heat preservation plate within the time period when the heat preservation plate is extruded, the materials can fall into an excess material collecting box after being scraped, and the movement of a scraper push plate can accumulate the material in the excess material collecting box to both sides and discharge it from the discharge valve; the purposes of cleaning and collecting the extruded and overflowed materials are effectively achieved, the production cost is reduced, meanwhile, the working environment is not prone to being polluted, and the efficient production and machining of the heat preservation plate are facilitated.

The invention discloses a fruit tree growth monitoring method based on UAV low-altitude remote sensing technology, which belongs to the field of UAV monitoring technology. A fruit tree growth monitoring method based on UAV low-altitude remote sensing technology comprises the following steps: according to the distribution of orchard area Formulate the best aerial photography monitoring route and multiple spare aerial photography routes, and remotely control the drone to fly over the orchard through the radio remote control equipment terminal. Monitoring and analysis of the growth status, and during the monitoring process, by surrounding the abnormal growth area of ​​the orchard, the boundary marking net is placed, and it is obviously and accurately covered on the upper end of the abnormal fruit tree without destroying the normal growth of the fruit tree, so as to quickly and accurately circle The abnormal growth area of ​​fruit trees provides a visual range indication for artificially regulating the growth of fruit trees, so that people can quickly and accurately manage the growth of abnormal fruit trees.

The application relates to a facial tissue foreign matter detection device and relates to the technical field of facial tissue production. The device comprises a bottom plate, a connecting frame one, a first detection mechanism, a placing mechanism and a second detection mechanism. The application has the effect of improving foreign matter detection precision. The first detection mechanism comprises a fixed guide plate, a first adjusting mechanism, a second adjusting mechanism and a detection module one and other components. The edge of the facial tissue is specially detected by the detection module one, so that a detection blind area is avoided, and the horizontal height position of the detection module one is adjusted by the first adjusting mechanism and the second adjusting mechanism, so as to adapt to facial tissues with different sizes and thicknesses. The second detection mechanism comprises a fixed cylinder, a motor two, a linkage mechanism, a motor three and other components. Through mutual cooperation, the detection range of the detection module two can be expanded, illumination compensation is realized through an illumination module, no dead angle detection of the facial tissue can be realized, the adjustment is flexible, and the detection precision and efficiency are high.

The invention discloses a power transmission tower wind-resistant inhaul cable stabilizing and reinforcing mechanism, and relates to the technical field of wind-resistant inhaul cable, the power transmission tower wind-resistant inhaul cable stabilizing and reinforcing mechanism comprises a connecting base, a first connecting side plate is welded to one side of the upper end of the connecting base, and a second connecting side plate is welded to the other side of the upper end of the connecting base; a first reinforcing assembly is arranged between the first connecting side plate and the second connecting side plate, a second reinforcing assembly is arranged on one side of the first reinforcing assembly, a knotting protection sleeve is arranged between the first reinforcing assembly and the second reinforcing assembly, and a cavity is formed in the knotting protection sleeve. According to the scheme, the problems that an existing power transmission tower wind-resistant inhaul cable is single in fixing structure and prone to loosening, consequently, the stability of the wind-resistant inhaul cable is low, the stability of the wind-resistant inhaul cable is poor, the stability of the wind-resistant inhaul cable is poor, and the like are solved. And frequent inspection is needed.

The utility model discloses a tool bit processing device of a disposable drill bit for numerical control deep hole processing, which comprises a placing body and a fixing rod, the placing body and the fixing rod are integrally manufactured, the placing body comprises a fastening block and a placing head, the placing head is arranged above the fastening block, the placing head comprises a first vertical plate, a second vertical plate, a third vertical plate, a fourth vertical plate and a placing groove, and the first vertical plate, the second vertical plate, the third vertical plate and the fourth vertical plate are arranged in the placing groove. The inner side faces of the first vertical plate and the second vertical plate, the inner side faces of the third vertical plate and the fourth vertical plate and the upper end face of the fastening block form containing grooves, a groove is formed in the center of the upper end face of the fastening block and perpendicular to the long edge of the upper end face of the fastening block, the groove extends downwards from the upper end face of the fastening block to the lower portion of the fastening block, and a through hole is formed in the middle of the side face of the fastening block. The through hole penetrates through the fastening block, and the placing head of the placing body is fastened by enabling a fastening screw to penetrate through the through hole and tightening a nut. The tool bit fixing device is simple in structure, the tool bit of the disposable drill bit can be firmly fixed in the positioning and machining process, and the machining quality of the tool bit of the disposable drill bit is guaranteed.

The invention discloses a fixing device for a transformer outgoing copper bar and a fixing method thereof and belongs to the technical field of transformer outgoing copper bar fixing. The fixing device is characterized in that a convex mounting plate is matched with an insulating partition plate for use, the limiting and fixing effect on two copper bar bodies is achieved, the two copper bar bodiesare insulated, a limiting plate with a heat dissipation mechanism is installed on one side of the convex mounting plate through a fixing plate, and the fixing plate is installed on an outer side of the convex mounting plate in an embedded mode to further play a role in fixing the convex mounting plate and play a role in supporting the limiting plate with the heat dissipation mechanism. The fixingdevice is advantaged in that the horizontal position of the limiting plate is adjusted according to the thickness of the copper bar bodies, the limiting plate drives the heat dissipation mechanism toabut against outer side walls of the copper bar bodies, on one hand, the copper bar body fixing device is further suitable for fixing the copper bar bodies with different thicknesses, on the other hand, the copper bar bodies are cooled through contact connection of the heat dissipation mechanism.

The utility model discloses a steel structure connecting assembly which comprises two pieces of steel with the same specification, a clamping block is fixedly arranged on one side of each piece of steel, a clamping groove is formed in the other side of each piece of steel, and the clamping block of one piece of steel is clamped in the clamping groove of the other piece of steel and fixedly connected with the clamping groove in a welding mode. A connecting steel sleeve is arranged at the connecting position of the steel in a sleeving mode, inserting holes are formed in the upper end and the lower end of the connecting steel sleeve, fixing columns are inserted into the inserting holes, an ejector block is fixedly arranged on one side of each fixing column, and clamping columns are arranged on the two sides of the end, away from the ejector block, of each fixing column. The clamping column is fixedly connected with the fixing column through an adjusting structure; reliable connection of steel can be achieved, and connection is simpler and more convenient.

The invention belongs to the technical field of pressure-regulating flushing, and particularly relates to gynecological clinical pressure-regulating flushing equipment which comprises a liquid storage tank, an eduction tube, a liquid outlet tube and a flow velocity adjusting mechanism, the liquid outlet tube is connected with the eduction tube through the flow velocity adjusting mechanism, and the flow velocity adjusting mechanism comprises a first connecting tube, a second connecting tube, an adjusting head and a displacement driving mechanism. One end of the first connecting pipe is connected with the eduction pipe; one end of the second connecting pipe is connected with the liquid outlet pipe; one end of the adjusting head is in sealed sliding connection with one end of the first connecting pipe far away from the eduction pipe, and the other end of the adjusting head is in sealed sliding connection with one end of the second connecting pipe far away from the liquid outlet pipe; the displacement driving mechanism is used for driving the adjusting head to slide relative to the first connecting pipe and the second connecting pipe; compared with the prior art, the pressure-regulating flushing equipment has the advantages that the spraying flow speed of liquid medicine can be regulated through electric control, meanwhile, quick regulation and slow regulation can be selected, and the use requirements of a user are met.

The utility model discloses a three-roller grinder with a secondary grinding structure, which relates to the technical field of three-roller grinders and comprises a three-roller grinder body, three groups of grinding rollers are mounted on the inner side of the three-roller grinder body, a scraper discharge hopper is mounted on one side, close to the grinding rollers, of the three-roller grinder body, and the scraper discharge hopper is connected with the three-roller grinder body. A controller is installed on the outer side, close to the scraper discharging hopper, of the three-roller grinding machine body. According to the three-roller grinding machine with the secondary grinding structure, materials can flow to the position between the two sets of material guiding inclined plates through the inclined face of the scraper discharging hopper, the two sets of material guiding inclined plates and the scraper discharging hopper can enable the materials to flow into the corresponding set of material guiding inclined frames, and then the materials can flow into the feeding hopper through the material guiding inclined frames; and the discharging pipe can be limited through the two sets of arc-shaped limiting plates, so that the positions of the discharging pipe and the conveying pipe are not prone to deviation due to accidental touch, and the placing stability of the discharging pipe and the conveying pipe is improved.

The present invention relates to the field of galvanized sheet, specifically a galvanized sheet, including a box body, a control box is fixedly installed on the front side of the box body, and first rectangular openings are opened on the left and right sides of the box body, so that A support plate is fixedly installed between the inner wall of the box corresponding to the first rectangular opening, and a second rectangular opening is opened between the support plate and the upper surface of the box corresponding to the second rectangular opening. The first transmission screw body. The present invention automatically pushes the body of the galvanized sheet to achieve faster work efficiency, and at the same time reduces the labor intensity of workers, making it safer to use. The main body is transported stably and is not prone to collisions, and the galvanized sheet body is not easy to shift its position, so that the qualified rate of the galvanized sheet body size after cutting is higher, and the dust generated during the cutting process is conveniently collected by the dust collection mechanism, so that the work site Clean and tidy.

The invention discloses an efficient plasma cutting machine and relates to the technical field of metal cutting. The efficient plasma cutting machine comprises a bottom plate, a cutting device is fixedly connected to the middle position of the top of the bottom plate, a plasma cutter is arranged in the middle position of the top of the cutting device, and bearing plates are fixedly connected to the positions, located on the two sides of the cutting device, of the top of the bottom plate. Supporting bases are fixedly connected to the positions, located on the two sides of the cutting device, of the top of the bearing plate, and positioning guiding pieces are arranged on the sides, close to the cutting device, of the supporting bases. According to the efficient plasma cutting machine, during moving, abrasion of the surface of a moving mechanism is effectively reduced, the service life of the device is further prolonged, vibration generated during cutting of the device is effectively reduced, position deviation of a metal piece in the cutting process is not prone to being caused by vibration, and the situation that chippings enter a driving piece to damage a power piece can be avoided, a stabilizing mechanism can rotate slowly, so that the cutting angle of the device is further increased.

The invention discloses a stainless steel water heating joint and a production process thereof. The joint comprises a hexagonal shaft sleeve, a first connecting sleeve and a second connecting sleeve,wherein the first connecting sleeve and the second connecting sleeve are inserted in the hexagonal shaft sleeve, a first welding ring is formed between an outer ring of the end face of the first connecting sleeve and the inner wall of the hexagonal shaft sleeve through circumferential welding, and a chamfer is formed in the end face of the second connecting sleeve; and a second welding ring is formed between the outer wall of the second connecting sleeve and the end face, away from the first connecting sleeve, of the hexagonal shaft sleeve through circumferential welding, the first connectingsleeve abuts against the end face of the second connecting sleeve, and a containing space is formed between the chamfer and the end face of the first connecting sleeve and used for containing the first welding ring. The joint has the following advantages and effects that the scheme utilizes a new mechanical structure, and has the effects of environmental protection, simple technological process, high processing efficiency, low production cost and light finished product weight.

The utility model discloses an electromagnetic driving device with signal feedback, which comprises a sleeve, a coil, an armature, stop iron and a bayonet assembly, the coil is sleeved outside the sleeve, the armature is slidably arranged in the sleeve, the bayonet assembly is connected below the armature, the stop iron is arranged at the bottom of the sleeve, and a puncture channel for the bayonet assembly to pass through is arranged in the stop iron. A first mounting groove is formed in the upper end of the stop iron, an action signal feedback mechanism is arranged in the first mounting groove, the action signal feedback mechanism comprises an action feedback switch, a first contact piece and a first spring connected between the action feedback switch and the first contact piece, and the first contact piece is used for making contact with the bottom face of the armature. The electromagnetic driving device with signal feedback has the advantages of high reliability and good stability.

The invention discloses a touch induction electrode structure. The structure comprises a substrate, first induction electrodes, second induction electrodes, a lead wire and an electric bridge, whereinthe surface of the substrate is inlaid with the first induction electrodes and the second induction electrodes; the adjacent first induction electrodes are connected through the lead wire; the adjacent second induction electrodes are connected through the electric bridge; the first induction electrodes and the second induction electrodes are clamped in fixing slots of the upper surface of the substrate; the first induction electrodes and the second induction electrodes are difficultly disturbed mutually, so that the control precision is improved; protective boards are laminated on the lower surfaces of the first induction electrodes and the second induction electrodes; the protective boards have the effects of protecting the induction electrodes, so that the wear between the substrate andthe induction electrodes is reduced and the service life is relatively long; and the lower ends of the first induction electrodes and the second induction electrodes are clamped in the fixing slots,so that the induction electrodes are difficultly shifted due to fall damage or other situations, the positions are relatively fixed, and the use is not influenced.

The invention discloses a fruit tree growth monitoring method based on an unmanned aerial vehicle low-altitude remote sensing technology, and belongs to the technical field of unmanned aerial vehicle monitoring, the fruit tree growth monitoring method based on the unmanned aerial vehicle low-altitude remote sensing technology comprises the following steps: formulating an optimal aerial photography monitoring route and a plurality of standby aerial photography routes according to orchard area distribution, the unmanned aerial vehicle is remotely controlled to sail over the orchard through the radio remote control equipment terminal, monitoring and data acquisition are performed on the growth state of the fruit tree in any period through the unmanned aerial vehicle, monitoring and analysis of the growth state of the fruit tree are achieved, and in the monitoring process, the boundary marking network is put in the abnormal growth area of the orchard in a surrounding mode, the device can obviously and accurately cover the upper end of the abnormal fruit tree without destroying the normal growth of the fruit tree, so that the abnormal growth area of the fruit tree is rapidly and accurately enclosed, visual range indication is provided for manual regulation and control of the growth of the fruit tree, and people can rapidly and accurately perform growth management on the abnormal fruit tree.

The invention discloses an SMT patching process and a conveying device applied to the process, relates to the technical field of SMT patching, and solves the problem that the glue and components in the existing SMT patching process are prone to positional deviation when the PCB board is transferred The main point of the technical solution is that the conveying device includes two vertical plates, supporting legs, a number of rotating rollers rotatably connected to the sides of the two supporting plates close to each other, a motor fixedly connected to the supporting plates, and a conveyor belt sleeved on the rotating rollers. And the clamping mechanism supported on the two conveyor belts; the patch process includes: a. Fixed PCB board; b. Install the clamping mechanism; c. dispensing; d. check; e. Component placement; f. Reflow soldering; g. AOI test; h. Flip the patch, the conveyor belt transports the clamping mechanism, and passes through the dispenser, the placement machine and the reflow oven in turn, so that the PCB board can be kept flat during the transportation process, so that the glue and parts printed on the PCB board It is not easy to shift the position.

The utility model discloses an oblique-falling integrated oil cylinder fixing plate, which relates to the technical field of wrecker oil cylinder fixing, and comprises a first oblique-falling frame, a second oblique-falling frame is horizontally and oppositely arranged on the first oblique-falling frame, and the first oblique-falling frame and the second oblique-falling frame are mounted in a mirror image manner. A fixing assembly is arranged between the first inclined falling frame and the second inclined falling frame, connecting bases are arranged on the two sides of the fixing assembly, the two ends of each connecting base are fixedly welded to the first inclined falling frame and the second inclined falling frame correspondingly, and mounting grooves are formed in the inner walls of the first inclined falling frame and the second inclined falling frame correspondingly; according to the scheme, the problems that due to the fact that most fixing bases of an existing oil cylinder fixing plate are fixed to a frame in a welded mode, an oil cylinder is inconvenient to mount and dismount, replacement is inconvenient, and flexibility is poor are solved.

The invention discloses a touch induction electrode structure. The structure comprises a substrate, first induction electrodes, second induction electrodes, a lead wire and an electric bridge, whereinthe surface of the substrate is inlaid with the first induction electrodes and the second induction electrodes; the adjacent first induction electrodes are connected through the lead wire; the adjacent second induction electrodes are connected through the electric bridge; the first induction electrodes and the second induction electrodes are clamped in fixing slots of the upper surface of the substrate; the first induction electrodes and the second induction electrodes are difficultly disturbed mutually, so that the control precision is improved; protective boards are laminated on the lower surfaces of the first induction electrodes and the second induction electrodes; the protective boards have the effects of protecting the induction electrodes, so that the wear between the substrate andthe induction electrodes is reduced and the service life is relatively long; and the lower ends of the first induction electrodes and the second induction electrodes are clamped in the fixing slots,so that the induction electrodes are difficultly shifted due to fall damage or other situations, the positions are relatively fixed, and the use is not influenced.