43results about How to "Stable contact pressure" patented technology

The invention discloses a polishing device and polishing robot polishing matching method, and belongs to the field of industrial robot equipment. Comprising the steps that automatic positioning and path planning are conducted on the grinding robot, specifically, the grinding robot conducts grinding construction operation according to path planning, the grinding effect is monitored in real time in the grinding process, and the grinding strategy is adjusted in a self-adaptive mode. A solution is provided for solving the problems that a grinding robot cannot keep contact pressure, the grinding angle and strength of the grinding robot cannot be automatically adjusted according to the concave-convex condition of the wall surface, and the grinding quality is not uniform due to the non-uniform strength.

This invention belongs to the field of headphone technology, and specifically relates to a quick-release structure for a headphone battery with elastic contact. It includes: a sound-generating unit with a mounting groove containing a receiver, and at least two inductive elements; and a battery unit with a conductive plate located inside the battery unit. By placing the conductive plate inside the battery unit, leakage caused by contact between the battery electrodes and the external environment is prevented. When the battery unit needs to be placed on the sound-generating unit, the receiver contacts the conductive plate, thereby establishing circuit continuity. This allows for easy assembly and disassembly of the battery unit and the headphone's sound-generating unit. During assembly, simply placing the battery unit on the sound-generating unit allows for automatic alignment and circuit connection through physical contact, eliminating the need for soldering, ribbon cables, or connectors, significantly reducing the difficulty and cost of automated assembly.

The utility model discloses a steel pipe derusting device relates to steel pipe processing technical field, the utility model discloses a rack is provided with two support rollers on the rotation of the rack, the first positioning block of adjustable position, second positioning block, limit support and mounting bracket are configured to the rack, the first positioning block is provided with the first positioning wheel of contact with the inner wall of steel pipe on the rotation, the second positioning block is provided with the second positioning wheel of contact with one end of steel pipe on the rotation, the limit support is provided with the tower wheel on the rotation, the utility model discloses when rusting to the outer surface of steel pipe, can carry out axial positioning and radial positioning to steel pipe, avoid the axial excursion and radial jounce of steel pipe rotation, improve the stability of steel pipe and rusting evenness, keep the contact pressure stability of steel wire wheel and steel pipe, avoid the steel pipe from the support roller, reduce the potential safety hazard, can also adapt to the steel pipe of different size simultaneously, improve the use flexibility and applicability, therefore have more practicality.

The utility model discloses an AB glue drill spreading machine, which belongs to the technical field of AB glue drill spreading machines, and comprises a base, a plurality of glue drills, a plurality of glue drills and a plurality of glue drills, the glue outlet head is mounted on the base through a driving part and can move on the base in the long side direction and the short side direction of the base; the glue scraping part is mounted on the driving part and slides along the long side direction of the base; wherein the glue scraping part is divided into two times of glue scraping during working, residual air in a template hole is extracted through negative pressure between the two times of glue scraping, air in the hole can be promoted to be exhausted through a negative pressure space, and glue is further compacted while secondary glue scraping and glue supplementing are carried out after air is exhausted.

The utility model relates to a vibration monitoring mechanism for unstable mobile equipment. The vibration monitoring mechanism comprises a vibration sensor, a pressure sensor, a telescopic sleeve, a universal joint assembly, a linear motor module and a longitudinal driving device, a transverse guide rail is arranged on the linear motor module; a moving seat is arranged on the transverse guide rail; a longitudinal driving device is fixed on the moving seat; the longitudinal driving device is in driving connection with the mounting seat; a universal joint assembly is arranged on the outer side face of the connecting base. A connecting rod is fixed to the outer side face of the universal joint assembly. The connecting rod is sleeved with a telescopic sleeve. The free end of the connecting rod is provided with a pressure sensor and a vibration sensor. The linear motor module drives the moving seat to move on the transverse guide rail, so that the vibration sensor can synchronously work along with the product, the longitudinal driving device drives the vibration sensor to be attached to the product, and the pressure sensor ensures that the contact pressure between the vibration sensor and the product is stable; and the vibration sensor can stably collect vibration data.

The utility model discloses a high stability power-off switch, its characterized in that: including upper casing and base, be provided with first placing groove and second placing groove on the base, first static contact piece sets up in first placing groove, second static contact piece sets up in second placing groove, correspond first static contact piece and be provided with first electricity column, correspond second static contact piece and be provided with second electricity column, be provided with the knob of rotation on the upper casing, the knob is connected with transmission link, be connected with the rotating disc and dynamic contact piece on transmission link, be provided with spring between the rotating disc and dynamic contact piece, tightly press dynamic contact piece on the base, the base adopts insulating material. The utility model discloses simple structure, reasonable in design can realize the rotation type of dynamic contact piece and break, make it can cooperate friction with base and realize arc extinguishing, also guarantee contact pressure stability simultaneously, and electric performance is more reliable.

The application discloses a motor train unit electric high-voltage isolating switch and a control method thereof, which comprises a control system, an electric cylinder, a mechanical connecting rod and a high-voltage isolating switch body. The control system is connected with the electric cylinder through a cable, the output end of the electric cylinder is fixedly connected with one end of the mechanical connecting rod, the other end of the mechanical connecting rod is hingedly connected with a conductive arm of the high-voltage isolating switch body, and a complete driving transmission chain is formed. The internal modules of the control system comprise a signal controller, a driver, a power conversion module and an anti-interference circuit. The internal structure of the electric cylinder comprises a stepping motor, the output end of the stepping motor is connected with a lead screw, the lead screw is fixedly connected with one end of the mechanical connecting rod, and an encoder and a memory battery are arranged at the connecting position of the stepping motor and the lead screw. Precise closed-loop control of on-off operation is realized, the contact pressure is stable, false connection and heating faults are avoided, the equipment maintenance cost is reduced, the structure design is simplified, and the installation and operation requirements of the high-voltage system of a locomotive and a vehicle are met.

The present invention belongs to the technical field of heating furnace sealing, and particularly relates to a high-efficiency heating furnace, comprising a heating furnace body with a closed door, a propulsion device is arranged on the outer side of the closed door, a sealing plate connected to the propulsion device is arranged on the inner side of the closed door, the propulsion device can drive the sealing plate to move toward the heating furnace body, a fiber graphite gasket 1 is installed on the sealing plate, a fiber graphite gasket 2 is installed on the heating furnace, a ceramic closed gasket is sandwiched between the fiber graphite gasket 1 and the fiber graphite gasket 2, the fiber graphite gasket 1, the fiber graphite gasket 2 and the ceramic closed gasket are all arranged around the furnace mouth of the heating furnace body, the ceramic closed gasket is slidably connected to the heating furnace body, the present invention can effectively seal under high temperature, and is helpful to keep the contact pressure of the sealing surface stable, and at the same time, the fiber graphite gasket 1 and the fiber graphite gasket 2 are both flexible structures, and when they are fitted with the ceramic closed gasket, the force on their surface is more uniform, thereby avoiding damage to the sealing structure and achieving a higher fit.

The application discloses a kind of glue spreader scraper pressure self-adapting adjusting device, comprising: bearing platform, it is equipped with the article area for accommodating workpiece on it;Horizontal drive mechanism is set on the bearing platform;Vertical drive and buffer mechanism is installed on the horizontal drive mechanism, and can be driven under the horizontal drive mechanism along the length direction of the bearing platform reciprocating motion;Glue execution mechanism is connected below the vertical drive and buffer mechanism, for driving under the vertical drive and buffer mechanism to carry out lifting movement, and obtain buffer in lifting process, the glue execution mechanism includes angle adjusting drive component for adjusting scraper working angle;Clamping mechanism is set in the bearing platform, for fixing workpiece in the article area.

The present application relates to the technical field of charging pile detection, in particular to a charging pile detection device, which is used to solve the problem that the existing detection device is prone to inconsistent insertion depth, contact position deviation and contact pressure fluctuation due to manual alignment; the device comprises a shell, a detection module, a test connector, a sliding base, a translation mechanism, a ball seat, a front end positioning sleeve, a pre-tightening mechanism and a trigger mechanism; the test connector is installed on the ball seat and electrically connected with the detection module, the front end positioning sleeve is sleeved on the test connector and provides an insertion space for the outer periphery of the measured output port, and the limiting step on the test connector forms the inner cavity bottom of the front end positioning sleeve; the translation mechanism is used to compensate for lateral deviation, the ball seat is used to compensate for attitude deviation, the pre-tightening mechanism is used to provide axial pre-tightening force, and the trigger mechanism outputs a detection enable signal when a predetermined trigger distance is reached. The present application can improve the stability of the contact state between the test connector and the measured output port, thereby improving the detection accuracy and repeatability.

The utility model relates to the technical field of photovoltaic panel cleaning control devices, in particular to an automatic angle adjusting mechanism suitable for a photovoltaic panel cleaning device. Comprising a supporting beam and a photovoltaic panel cleaning device, an adjusting mechanism is arranged between the supporting beam and the photovoltaic panel cleaning device and comprises an adjusting rod I, an adjusting rod II and an adjusting rod III, and the adjusting rod I, the adjusting rod II and the adjusting rod III are sequentially arranged between the supporting beam and the photovoltaic panel cleaning device to form two trapezoids. The adjusting mechanism is controlled in real time, so that the position of the photovoltaic panel cleaning device is controlled, and the purpose of controlling the contact pressure of the cleaning device on the photovoltaic panel to be relatively stable is achieved.

The invention discloses a flexible grinding disc and a forming method thereof, and relates to the technical field of grinding products, the flexible grinding disc comprises a composite grinding material layer and a base material layer, the base material layer is a glass fiber base plate, grinding pellets are formed on the base material layer in a casting mode around the circumference, the composite grinding material layer is formed by the grinding pellets, and the composite grinding material layer is formed by the grinding pellets. The grinding pellet is composed of a composite grinding material, a binding agent and a diluent, the composite grinding material comprises a diamond main grinding material and a SiC auxiliary grinding material, and the forming method comprises the steps that S1, slurry is prepared; s2, assembling the mold; s3, molding by casting; s4, unloading the mold; s5, curing is conducted; according to the scheme, the flexible grinding disc with the pellets with the thickness being 1-2 mm and the diameter being 2-10 mm is formed in the self-made steel mold through a pouring method, surface grinding treatment can be conducted on the fragile glass products, different grinding requirements of different users can be met, the problems of surface scratches and scratches can be well solved, meanwhile, environmental pollution can be effectively reduced, and the service life of the fragile glass products is prolonged. Meanwhile, the machining and forming efficiency is high.

The utility model discloses a broadband low intermodulation connector belongs to the technical field of connector, and its technical scheme main points include the connector body, the top of connector body inboard installs dynamic pre -tension mechanism, the top and bottom of connector body inner wall all are set up with the anti -loose mechanism, dynamic pre -tension mechanism includes disc spring, connector, several slide holes and several limit rods, the top of connector body inboard is installed to disc spring, and disc spring in dynamic pre -tension mechanism can automatically compensate the pre -tension fluctuation of vibration, temperature change or the plugging wear and tear through the elastic deformation, ensure that the contact pressure between connector and the docking equipment always keeps stable, avoid the contact resistance mutation, and the guiding effect of cooperation slide hole and limit rod, limit the radial deviation of connector, guarantee the coaxiality of inner and outer conductor contact, reduce signal reflection and loss to maintain the low intermodulation performance in broadband.

This invention belongs to the field of electrical equipment technology, specifically relating to a dual-power automatic transfer switch contact system. It includes a housing and an operating lever movably disposed inside the housing. It also includes a standard stationary contact, a spare stationary contact, and a moving contact. The standard and spare stationary contacts are located on the same side inside the housing, and the moving contact is located between them, with the standard and spare stationary contacts positioned at opposite heights. Driven by the operating lever, the moving contact can make contact with one of the standard or spare stationary contacts. The standard and spare stationary contacts are located on the same side inside the housing, with the moving contact positioned between them. The operating lever is connected to a base via a connecting shaft, and its front end has a vertical rod fixed to the tail of the moving contact. This layout fully utilizes the internal space of the housing, reduces redundant space between components, and makes the entire contact system more compact.

This invention provides an automated window film applicator for packaging boxes, belonging to the technical field of window film applicators for packaging boxes. It includes a conveyor belt, a transfer table on one side of the conveyor belt, and a feeding mechanism, an adhesive applicator, and a window film applicator assembly sequentially arranged along the feeding direction on the top of the conveyor belt. The window film applicator assembly includes a longitudinal linear module mounted on the top of the transfer table. A mounting plate is fixedly connected to the moving end of the longitudinal linear module, and two film applicators are arranged on one side of the mounting plate. This invention designs the film applicators as a structure with a sliding fit between a negative pressure box and a floating box. The bottom of the floating box is connected to a flexible suction plate with distributed micropores. An indentation on the bottom plate of the floating box forms a negative pressure distribution cavity with the negative pressure holes. This design ensures that the negative pressure is evenly distributed across the entire surface of the film, avoiding localized stress concentration caused by point suction cups, reducing problems such as depressions, bulges, and bubbles during film adsorption, and ensuring the flatness and adhesion of the window area.

The utility model discloses a handcart mechanism for a switch cabinet, which comprises a handcart body, a panel is arranged on the handcart body, a conjoined insulator is arranged on the back of the panel, and an insulating contact arm is arranged on the conjoined insulator; the insulating contact arm is connected with a static contact on the fuse through an arranged moving contact, and an elastic ring is mounted on the ring surface of the moving contact; the vehicle body is further provided with a lightning arrester, and the upper end of the lightning arrester is connected with the connecting busbar through a wire. In conclusion, the lightning arrester is integrated on the vehicle body, so that the rapid maintenance and replacement of the lightning arrester can be realized through a handcart type structure, and the safety and reliability of equipment are enhanced at the same time. In addition, the moving contact is also provided with an elastic ring, so that the moving contact has elasticity to ensure that the contact pressure is stable and the heating loss is reduced. Specifically, the elastic ring is an inclined ring spring, so that the installation and disassembly of the elastic ring and the moving contact are simple and convenient, and the maintenance convenience of the equipment is further improved.

The utility model belongs to test fixture technical field especially relates to a double locking's microneedle test fixture. Including lower mould subassembly, the test site for placing the product to be measured is opened in lower mould subassembly, and at least one group of clamping blocks are symmetrically arranged in the both sides of lower mould subassembly, the upper mould subassembly for pressing together to the upside of lower mould subassembly, at least one group of buckle assembly are symmetrically arranged in the both sides of upper mould subassembly, and the buckle assembly is clamped to clamping block and makes upper mould subassembly and lower mould subassembly relative fixation, and the elastic sheet microneedle module is equipped in upper mould subassembly, and the elastic sheet microneedle of elastic sheet microneedle module is used to downwardly abut the product to be measured, a plurality of hand screws are arranged on upper mould subassembly, and hand screw is connected to lower mould subassembly through upper mould subassembly. The utility model discloses a buckle assembly and hand screw's double locking structure, realize upper mould subassembly and lower mould subassembly's quick locking and reinforcing locking, ensure that the elastic sheet microneedle and the product to be measured keep contact pressure stable between, have the advantages such as high test precision, good reliability, convenient operation.

The application discloses a pre-deposition detection method, system and device, relates to the technical field of thin film preparation process detection, and the application drives an electrode rod to establish stable electric contact with a graphite boat load through an adjustable electrode rod device after completing a process boat operation; the graphite boat load is detected for pre-discharge in a normal pressure environment, and discharge characteristic parameters in the pre-discharge process are collected; the load state is judged by analyzing the discharge characteristic parameters; if the load state is normal, a formal film plating process is executed; if the load state is abnormal, an alarm is triggered and boat-out inspection is executed; after the load state is adjusted through the boat-out inspection, a cycle recheck is constructed until the load state is judged to be normal; and the application realizes fast and accurate matching of dynamic impedance between a power supply and a load.

The utility model discloses a new energy electrification heavy truck uses pantograph, include: pantograph body, including support plate, connecting arm, first screw mechanism and pantograph head, the connecting arm one end rotation is connected in support plate side, is equipped with pantograph head in the other end, the support plate top solid is equipped with third connecting column, first screw mechanism one end is connected with third connecting column rotation, and the other end is connected with connecting arm side rotation, lifting device lifting device is used for controlling pantograph body and moves up and down, translation device, translation device is used for controlling lifting device and moves left and right, wherein, lifting device establishes in translation device, the support plate of pantograph body is connected with lifting device, the utility model discloses a new energy electrification heavy truck uses pantograph convenient to use, through the cooperation setting between pantograph body, lifting device and translation device, has realized to the lifting, translation and buffer function of pantograph head.

The utility model discloses an impact type oil drain, including the installation cavity of setting in the oil drain valve body's column core, the first clamping groove and second clamping groove are equipped with on the installation cavity inner wall interval, and the snap spring of being positioned between the first clamping groove and second clamping groove is equipped on the column core, and the sealing element of sealing contact with the installation cavity inner wall is equipped on the entity part of column core one end, when the snap spring is switched to the second clamping groove by the column core drive first clamping groove, drive sealing ring to remove from the installation cavity, make installation cavity, drain cavity and connecting mouth intercommunication, adopt this technical scheme, through the design multiple sealing elements on the column core can realize multiple sealing redundancy, improve the sealing reliability, and the sealing state change of sealing element is realized through the axial movement of column core, and this process is accurate, controllable, reliable, and the adaptability to well condition is stronger, and the sealing structure of this impact type oil drain is simple, and the installation maintenance is convenient, and the processing and manufacturing difficulty and production cost are reduced greatly.

The invention discloses a large-current manual maintenance switch with a novel elastic piece assembly structure, and belongs to the technical field of connectors. The switch comprises a plug, a socket, a conductive copper bar which is arranged in the socket and is integrally punched and formed, a pressing rivet nut fixed on the copper bar, and a double-elastic-sheet structure which is pressed and riveted on the copper bar, through the integrated stamping structure, the production process is simplified, and the cost is greatly reduced; the mechanical reliability and the anti-vibration capability of connection are remarkably improved through the application of the pressing rivet nut; due to the optimized conductive path and the double-elastic-sheet contact design, low temperature rise and stable electrical connection are ensured when a large current passes through; according to the invention, the problems of high cost, poor connection reliability, high temperature rise and the like when an existing manual maintenance switch is used for coping with a high-voltage platform of 1000V and above are effectively solved, and the manual maintenance switch is suitable for a high-voltage power supply system of a next-generation electric automobile.

The utility model discloses a quick plug for an LED lamp bead. Relates to the field of electric connectors. Comprising an insulating base body, a bent first electrical terminal and a bent second electrical terminal, the two ends of the insulating base body are respectively conducted to form plugging ports matched with the first electrical terminal and the second electrical terminal, and a plurality of limiting blocks are formed outside the insulating base body. One section of the first electric terminal and one section of the second electric terminal pass through the limiting blocks and are clamped at the plugging port. According to the quick plug for the LED lamp bead provided by the utility model, the plugging ports matched with the first electrical terminals and the second electrical terminals are formed through the insulating substrate, so that quick installation and reliable electrical connection of the LED lamp bead can be ensured.

The utility model relates to battery electrode connection technical field provides a composite battery contact device, including folding type metal spring and spring, spring is located folding type metal spring inside, and the axial direction of spring is identical with the elongation direction of folding type metal spring, is used for lifting folding type metal spring, folding type metal spring is by base, top piece and foldable spring piece and is composed, foldable spring piece both ends are fixedly connected with base, top piece respectively, and one end of spring is fixedly connected with base, and the side of top piece close to base is provided with the ring groove of contour adaptation with spring top portion. The device is through the composite structure of spring and folding type metal spring, has integrated the advantage of spring long stroke and metal spring low internal resistance, has promoted the stability and reliability of battery contact.

The utility model discloses a sheet metal part processing and welding device which comprises a machine body, a welding assembly installed on the top of the machine body and capable of vertically lifting and a tool die arranged on the top of the machine body, the top of the machine body is connected with a bearing plate in a sliding mode through a guide rail, and the two sides of the bearing plate are movably connected with supports through pin shafts. A supporting plate is fixedly connected to the side, away from the pin shaft, of the support, the tool mold is placed on the top of the supporting plate, and a driving structure is arranged on the surface of the welding assembly. The guide rail is in sliding connection with the bearing plate, a pin shaft movable structure of the support and the supporting plate is combined, the inclination function of a tool mold is achieved, the mold posture is driven to be adjusted through lifting power of the welding assembly, and extra energy is not needed; after the die inclines, the contact area of the die and the workpiece is reduced, a natural gap is formed, the adhesion risk is reduced, prying operation is not needed during workpiece taking, and the discharging efficiency is remarkably improved.

The application discloses a multifunctional filter screen feeding table for a die casting workshop, which comprises a feeding table, a carrying device and a marking device, wherein the feeding table is provided with a feeding position, a discharging position and a quick-change gripper placing position; the feeding position is used for placing at least one full filter screen tray; the discharging position is used for placing an empty tray; and the quick-change gripper placing position is used for placing a quick-change gripper; the carrying device is arranged on the feeding table and is used for carrying the empty tray from the feeding position to the discharging position; and the marking device is arranged on the feeding table and is used for marking a die casting product; an external robot realizes feeding of the full filter screen tray, taking the filter screen from the tray and installing the filter screen into a die casting mold, taking the die casting product from the die casting mold, marking the die casting product and placing the die casting product into a storage position, and discharging the empty tray through the quick-change gripper.

The utility model relates to the field of workpiece polishing processing, concretely relates to a profiling polishing device, including polishing subassembly and be used for installing the support of polishing subassembly, the support includes base and installs the front support and rear support on the base, the base below is provided with the wheel subassembly who moves along workpiece datum plane, be provided with telescopic mechanism on the front support, and the telescopic mechanism includes pivot, the guide rod who is worn on the pivot and the spring who sets up on the guide rod, be provided with the adjusting mechanism who is used for adjusting the angle of polishing subassembly on the rear support, the utility model restraints device motion trajectory on the workpiece surface geometry feature, makes the polishing piece passive recurrence workpiece appearance, thereby realizes profiling polishing operation, reduces the influence of artificial factor, and provides the pre -tightening force through the spring, realizes the real -time compensation of workpiece processing surface local undulation, guarantees stable contact pressure again, guarantees the polishing quality.

The invention discloses a measuring device and a testing method for testing the Poisson's ratio of a honeycomb core material. The Poisson's ratio testing device comprises a cylindrical fixture, and a sample for testing the Poisson's ratio is positioned on the top surface of the cylindrical fixture and is clamped by the fixture to form a saddle shape; the size measuring device comprises a horizontal testing assembly for testing the chord length of the saddle-shaped sample and a vertical testing assembly for testing the depth value from the chord length center point to the surface of the sample. According to the Poisson's ratio testing device and the testing method, mechanical size measurement is realized, personnel operation steps are reduced, one person can complete size measurement, the labor cost is reduced, the testing efficiency is improved, the accuracy and the consistency are improved, and further use and popularization of the standard ASTM D6790 are facilitated.

The utility model discloses a kind of fixed evaporation boat, comprising: terminal stud, top is provided with the keyway structure of protruding;Evaporation boat body, two ends symmetrically are provided with fixed hole, to cooperate with the keyway structure of terminal stud top and install;Terminal stud pressing block, for locking the cooperation part of evaporation boat body and terminal stud.The core of the fixed evaporation boat is keyway-pressing block fixing system, terminal stud pressing block adopts split type structure, by high-strength bolt controllable locking force is applied, and keyway structure is cooperated to form rigid restraint system, realizes the double combination of rigid positioning and elastic compensation, effectively resists thermal stress and equipment vibration.The fixing mode of evaporation boat used in the utility model effectively solves the technical problems that traditional evaporation boat is easy to displace and fall off, improves anti-vibration performance while ensuring positioning accuracy, improves coating quality and product pass rate, and provides stable and reliable hardware support for high-precision vacuum coating.

The utility model relates to the technical field of connectors, and discloses an improved connector structure, which comprises a socket and a plug, an inner groove is arranged in the socket, and a curved pin is arranged in the plug; and the inner groove is internally provided with four groups of elastic contact pieces. According to the improved connector structure, the stability of connection between the socket and the plug can be effectively enhanced, the sliding butt joint between the socket and the plug in the prior art is changed into rolling butt joint, the connection smoothness between the socket and the plug is improved, more labor is saved during butt joint or separation, and meanwhile, the guide rail type butt joint plays a role in guiding a path during butt joint; according to the utility model, the curved contact pin is prevented from being damaged due to improper angle during butt joint, meanwhile, the novel curved contact pin and the annular slot formed by the elastic contact element are adopted, stable contact pressure is guaranteed, the contact area is increased, the contact resistance is effectively reduced, certain self-adaptability to the insertion angle deviation of the contact pin is realized, and the fault-tolerant rate of connection is improved.

The utility model provides a flatness detection device of automobile brake disc processing relates to brake disc processing technical field, including bottom plate, still include: flatness detection subassembly, flatness detection subassembly includes the support seat of connection on bottom plate, the top of support seat is equipped with electric push rod, in the utility model, cylinder drive moving block drives mounting bracket to move, makes the clamping plate close and clamps the brake disc, servo motor can drive brake disc rotation to adjust detection surface, subsequently, electric push rod elongation, drives the shell and bottom structure to move down, makes detection wheel contact brake disc surface, transmission motor drives the rotation of carousel, drives detection wheel to roll on brake disc surface, when brake disc surface is uneven, detection wheel will be up and down micro motion, the sensor on connecting plate captures this change, will signal into electric signal, thereby completes to brake disc flatness's detection, has realized brake disc quick positioning, automatic detection flatness, has promoted detection efficiency and precision.