31results about How to "Small elastic deformation" patented technology

The invention provides a precise lifting platform. The precise lifting platform comprises a platform base; the lifting component consists of a first wedge-shaped block, a first crossed roller guide rail, a second wedge-shaped block, a second crossed roller guide rail and at least one pair of linear guide mechanisms; the first wedge-shaped block is connected with one part of the first crossed roller guide rail, and the first wedge-shaped block can be guided to move in the first direction; the second wedge-shaped block is connected with the first wedge-shaped block through a second crossed roller guide rail and a linear guide mechanism, so that the second wedge-shaped block can move along with the movement of the first wedge-shaped block; the linear motor is connected with the first wedge-shaped block and can be used for driving the first wedge-shaped block to move; and the feedback device is arranged on the second wedge-shaped block and / or the platform base and can be used for acquiring position parameters of the second wedge-shaped block. The precise lifting platform has a long-term market prospect, the movement precision and the movement stability of the precise lifting platform are in the technical leading edge of an existing lifting platform, and certain social benefits can be achieved.

The invention provides bending equipment for steel profile machining and a bending method of the bending equipment, and belongs to the technical field of steel profile bending. The bending equipment for steel profile machining comprises a machining table, supporting legs and a bending mechanism, the supporting legs are oppositely installed at the bottom of the machining table, the bending mechanism is installed on the surface of the machining table, and the bending mechanism comprises a first rotating shaft, a heating cavity, a sleeve and a limiting frame. The bending mechanism is arranged, an electric telescopic rod drives a sleeve to rotate clockwise for bending, meanwhile, a support drives a push rod to move synchronously, so that a first abutting plate is driven to move in the direction of a first air cylinder, air is injected into a heating cavity through a cavity, and after being heated through a heating coil, the air is sprayed out of a bent part of a profile through a first spraying hole; and the section bar is uniformly heated, so that the plasticity of the material can be improved, more deformation becomes irreversible plastic deformation, the elastic deformation part is reduced, the residual stress in the section bar is released and reduced, and the rebound force of the section bar after bending is reduced.

The application discloses a precision superconducting cavity processing and detecting system and a die forging process, which comprises a turret type die automatic switching device, a die forging equipment, a superconducting cavity special die and a superconducting cavity deformation detecting device; the turret type die automatic switching device is used for carrying the superconducting cavity special die; the die forging equipment is used for die forging a blank placed in the superconducting cavity special die; and the superconducting cavity deformation detecting device is used for detecting the punched superconducting cavity after die forging; the superconducting cavity deformation detecting device comprises a base, a control box is arranged in the base, and a superconducting cavity supporting convex block for placing the punched superconducting cavity is arranged on the base; the superconducting cavity supporting convex block comprises a body, and a first strain detecting ring, a second strain detecting ring, a third strain detecting ring, a fourth strain detecting ring and a fifth strain detecting ring are sequentially arranged on the body. The application has the advantages of improving product quality and reducing production cost.

The utility model provides a small sliding table air cylinder which comprises a base and a sliding table located above the base, and a crossed linear rail is arranged between the base and the sliding table so that the sliding table can form the freedom degree of sliding in the front-back direction of the base. A longitudinal air cylinder, a longitudinal piston and a piston rod are arranged in the middle area, in the width direction, of one end of the sliding table, a fixing plate is arranged at one end of the base, and the tail end of the piston rod is matched with the fixing plate to exert force to drive the sliding table. Two first air connecting openings communicating with the two ends of the longitudinal air cylinder correspondingly are formed in the side portion of the sliding table. The utility model has the advantages of compact structure, strong bearing capacity, good rigidity and stable operation.

The invention relates to the technical field of connecting devices, and provides a welding-free wire clamp structure comprising a bearing sleeve which is provided with a containing cavity, and a limiting assembly is arranged in the containing cavity; the clamping piece can stretch into the containing cavity in the first direction, and the clamping piece comprises a body, a clamping piece and a clamping piece, and one end of the body is connected with the bearing sleeve in a clamped mode; one end of the first elastic plate is connected with the other end of the body through a fixing plate, and a first mounting groove is formed in the first elastic plate; the second elastic plate is connected with the other end of the first elastic plate and forms a limiting tip, the other end of the second elastic plate is connected with a sliding plate, and the sliding plate can slide along the body. According to the cable clamp, the bidirectional clamping function is realized by arranging the bidirectional mounting groove, so that the cable clamp can adapt to various cable cores with different radiuses, the applicability of the cable clamp is improved, and the cable is effectively prevented from loosening or falling off under bidirectional pulling.

This invention relates to the field of bridge construction technology, and particularly to a steel-concrete composite beam support and its preloading construction method. The steel-concrete composite beam support includes two rows of separate side supports, which are used to symmetrically support the bottom of the side boxes on both sides of the main steel beam. Multiple rows of steel pipe columns are arranged at intervals, and each row of steel pipe columns includes multiple steel pipe columns. Adjacent steel pipe columns are connected by diagonal bracing groove steel frames. A transverse distribution beam is fixed at the top of the multiple rows of steel pipe columns, and a Bailey beam is fixed on the transverse distribution beam. A track distribution beam is set on the top of the Bailey beam, and a sliding track is set on the track distribution beam. A transport trolley slides on the sliding track. The sliding track and transport trolley realize dynamic segmented preloading, ensuring that the settlement data accurately reflects the performance of the support. The modular structure facilitates rapid assembly and shortens the construction period. The symmetrical arrangement of the separate side supports avoids load concentration in the middle, reduces local stress concentration, and results in a more uniform load distribution, making it suitable for the construction of long-span bridges.

The utility model discloses a sports suit, which comprises an outer fabric layer, a first fabric layer, a second fabric layer, a third fabric layer and a fourth fabric layer, the outer fabric layer is provided with a first surface and a second surface which are opposite to each other, and the first surface faces the outer side of the sports suit; the outer cloth layer is made of elastic fabric; the outer cloth layer is provided with a first area and a second area, and the flatness requirement of the first area is higher than that of the second area; and the lining cloth layer is arranged in the first area in a fusible interlining manner. According to the sports suit provided by the utility model, on the basis of meeting the wearing comfort, the requirement of flatness can be met, so that the wearing effect is improved.

The present invention belongs to the technical field of water cup manufacturing, and in particular, relates to an instrument for detecting vacuum container leakage using deformation force feedback and a detection method thereof, wherein the instrument comprises a machine base, on which a placement seat, a pressing assembly and a pressure sensor are arranged. The placement seat is used to place the container to be tested; the pressing assembly is arranged above the placement seat, and the pressing assembly can be close to the placement seat and press against the container on the placement seat or away from the placement seat; the pressure sensor is arranged at the end of the pressing assembly facing the placement seat, and the pressure sensor is used to detect the deformation resistance of the container when the pressing assembly is pressed down to the container. The instrument does not consume additional heating energy, has low energy consumption, a simple detection method, and reliable measurement results.

The utility model relates to an external expansion type main tower construction opposite-pulling device which is used on an upper tower column of a V-shaped main tower and comprises a plurality of opposite-pulling components which are sequentially arranged in the vertical direction, and each opposite-pulling component comprises I-shaped steel and a plurality of steel strand assemblies located above the I-shaped steel. The two opposite ends of the I-shaped steel are fixed to the two opposite faces of the upper tower column respectively, each steel strand assembly is composed of a plurality of steel strands, and the two opposite ends of each steel strand are fixed to the two opposite faces of the upper tower column respectively. According to the external expansion type main tower construction opposite-pulling device, the line shape of a tower column can be effectively adjusted through opposite-pulling of the steel strands and the I-shaped steel, and compared with pure steel strand opposite-pulling, graded tensioning is not needed, and elastic deformation of the steel strands caused by increase of horizontal component force of a support in the pouring process of an upper cross beam can be effectively reduced.

The utility model discloses a hidden type electric outer door handle tolerance regulator which comprises a hollow regulator body, a base and an installation bolt, the regulator body is connected with the base in a matched mode, the installation bolt is arranged in the regulator body and used for fixing the regulator body, and the hidden type electric outer door handle tolerance regulator further comprises a fixing ring. The fixing ring is arranged on the outer side of the end of the installation bolt in a sleeving mode, an outer protruding part is arranged at the lower end of the end of the installation bolt and abuts against a limiting structure in the regulator body, and a via hole allowing a rod body of the installation bolt to pass through is formed in the limiting structure. A first elastic clamp inclining towards the inner side is arranged on the side face in the regulator body, the lower end of the first elastic clamp abuts against the upper end of the fixing ring so that the fixing ring can be located between the first elastic clamp and the outer protruding part, and a plurality of second elastic clamps inclining towards the inner side of the upper portion are arranged on the fixing ring. And the second elastic clip is propped against the outer side of the end of the mounting bolt. The tolerance regulator is high in structural strength, even, firm and reliable in stress and accurate in positioning.

The utility model discloses a thin-wall part auxiliary flexible supporting device which comprises a base, a control panel is fixedly installed on the outer surface of the front end of the base, and an auxiliary clamping device used for improving the fixing convenience of a thin-wall part is arranged on the outer surface of the upper end of the base. The inner surfaces of the two sides of the auxiliary clamping device are provided with lining type flexible supporting devices used for improving protection of the thin-wall part. According to the auxiliary flexible supporting device for the thin-wall part, the lining type flexible supporting device and the auxiliary clamping device are arranged, the structure is simple, clamping is convenient and fast, clamping is reliable, the rigidity of the thin-wall position of the thin-wall part to be machined is enhanced, the influence of pressing force of an unreasonable pressure mode on a machined face is avoided, elastic deformation of the machined face is reduced, and the machining quality is improved. The accurate positioning of the machined thin-wall part is also ensured; the machining difficulty of the thin-wall part of the type is solved, the machining precision is improved, the machining size out-of-tolerance is reduced, and then the production efficiency is improved.

The utility model discloses a grinding machine transverse feed ball screw pre-tensioning structure which comprises a screw rod installed on a bearing seat I and a bearing seat II through a bearing assembly I and a bearing assembly II, the bearing assembly II comprises a pair of angular contact ball bearings which are installed on the screw rod and located in a bearing hole II, and the opposite angles of the angular contact ball bearings are in contact. An inner ring and an outer ring of an angular contact ball bearing are limited in a shaft step of the lead screw and a hole step of a bearing hole II respectively, a locking nut II screwed on the lead screw limits the inner ring of the other angular contact ball bearing, and a gland installed on a bearing seat II limits the outer ring of the angular contact ball bearing. The first bearing assembly comprises a deep groove ball bearing and a thrust bearing which are installed on the lead screw and located in a first bearing hole, an inner ring of the deep groove ball bearing is limited to a shaft step of the lead screw, a gasket is arranged between the thrust bearing and the deep groove ball bearing, the gasket is limited to a hole step of the first bearing hole, and the thrust bearing is pressed on the gasket through a first locking nut screwed on the lead screw. And an interval of 2mm is reserved between the gasket and the end face of the deep groove ball bearing.

The present invention discloses a special-shaped thin-wall brake gear and a manufacturing method thereof, comprising a gear body, the gear body comprising an inner circle and an outer circle, the inner side of the inner circle is provided with an inner hole, the outer side is provided with a six-equal groove, the outer circle is provided with six outer teeth, and the outer circle is provided with six outer teeth, and the outer circle is provided on the outer side of the inner circle; the manufacturing method of the special-shaped thin-wall brake gear, the specific steps are as follows: forging → isothermal normalizing → rough turning → fine turning → tooth forming gear shaping → milling center milling machine → rough milling six-equal groove pre-milling → heat treatment → shot blasting → finishing inner hole and end face → finishing outer circle → fine grinding of teeth → finishing six-equal groove → completion inspection. The present invention further improves the rigidity of the thin wall of the special-shaped thin-wall brake gear, and can prevent the gear from deforming during processing, and can also solve the problem that the different sizes of the inner hole easily lead to uneven position of the six grooves.

The utility model discloses a double-sided jet printing mechanism for printing on front and rear inclined planes of a main shaft, which relates to the technical field of printers and comprises a material placing rod, a material shaft, a stainless steel pressure shaft, the main shaft, a negative material shaft and a material receiving rod, and further comprises a first printing assembly and a second printing assembly which are respectively positioned on the front and rear sides of the main shaft and are arranged on the inclined planes. By arranging the first printing assembly and the second printing assembly which are provided with the inclined planes, the double-sided alignment precision of materials is improved, the ink flying phenomenon of the double-sided printing mechanism during double-sided printing is reduced, the flatness of the fabric is improved, the mechanism is simple in structure and cloth feeding process, the precision and stability of the cloth feeding process are easier to control, and the production efficiency is improved. The inclined planes of the ink jet direction of the first printing assembly and the ink jet direction of the second printing assembly are adjustable, accurate alignment of double-face printing is guaranteed, meanwhile, the problems of ink flying, rod pollution, material elasticity, alignment and the like in the prior art are solved, meanwhile, the negative material shaft can work continuously, and the production quality and production efficiency of materials are improved.

The invention relates to the technical field of robots, in particular to a high-rigidity rack for precise positioning, locking and welding and a machining method, and the high-rigidity rack for precise positioning, locking and welding comprises a mounting disc and the like; a circular hole is formed in the middle of the mounting disc, mounting holes a for mounting flanges are circumferentially formed in the eccentric position of the middle of the mounting disc at intervals, six positioning grooves a are circumferentially formed in the edge of the top of the mounting disc at intervals, and threaded holes a are symmetrically formed in the edge of the bottom of the mounting disc relative to the positioning grooves a. According to the invention, the matching surfaces of all parts of the rack are precisely machined, positioned by the keys and the clamping grooves, locked by the screws and then welded, the positioning precision is within 0.1 mm, and precise positioning is realized. And after being positioned, the parts of the rack are directly locked by screws, so that a positioning tool is omitted, and the cost of all tools is saved.

The invention provides a diaphragm as well as a preparation method and application thereof. The diaphragm comprises a porous base material layer, the fast ion conductor layer is arranged on the surface of the porous base material layer and in pores of the porous base material layer; the fast ion conductor layer comprises a ceramic material, a binder, a thickener and a lithium salt. According to the diaphragm as well as the preparation method and the application thereof provided by the invention, the winding elastic deformation of the diaphragm can be reduced, the lithium ion conductivity is increased, and the safety performance of a secondary battery is improved.

The present invention discloses a floor brush, a longitudinal floor brush hood and a blade mounted on the inner side of the floor brush hood along the longitudinal direction, the floor brush at least comprising two connecting parts connecting the longitudinal ends of the blade, the floor brush hood comprising at least one receiving part arranged from its inner wall toward the blade, in the longitudinal direction, the receiving part is arranged between the two connecting parts, the receiving part comprises a receiving space, and the blade is at least partially received in the receiving space. According to a floor brush of the present invention, by arranging the receiving part on the inner wall of the floor brush hood near the blade, the blade can only be deformed within the range limited by the receiving space of the receiving part during the hair cutting process, and will not be excessively bent and deformed to fail due to hair entanglement or other reasons.

The present application provides a vacuum glass support and a preparation method, including vacuum glass, the vacuum glass including insulating glass and laminated glass, and at least one group of support members arranged between the insulating glass and the laminated glass, the support members including a first support member and a second support member, and both are provided with a glass glaze layer, through which the glass glaze layer is sintered and installed on the insulating glass and the laminated glass respectively, so that the support members are tightly connected with the insulating glass and the laminated glass, and the support members are hemispherical. In the present invention, by sintering and installing the support members on the insulating glass or the laminated glass, the support members are tightly connected with the insulating glass or the laminated glass, thereby greatly reducing the probability of displacement or falling off of the support member during the movement of the vacuum glass, and improving the performance and reliability of the vacuum glass.

The application relates to the technical field of equipment damping, and discloses a multi-station damping machine base of a textile equipment modular adjustable vibration isolation pad, which comprises a bottom plate one, a bottom plate two is arranged on the lower side of the bottom plate one, left and right symmetrical connecting side plates are installed on the upper end of the bottom plate one, a textile machine body is jointly installed between the left and right connecting side plates, and supporting plates are also left and right symmetrically installed in the middle of the upper end of the bottom plate one. The multi-station damping machine base of the textile equipment modular adjustable vibration isolation pad can effectively solve the problems in the prior art that the damping machine base is mostly provided with fixed-specification vibration isolation pads, part of the stations are excessively or insufficiently damped, the synchronism and stability of multi-station operation are seriously affected, the damping parameters of the vibration isolation pads cannot be independently adjusted, the production precision is reduced, the installation of the vibration isolation pads lacks a standardized adjusting structure, the machine base is unevenly stressed and deformed, vibration is further intensified, and the production efficiency of the textile equipment and the improvement of product quality are restricted.

The invention relates to the technical field of LCD and polarizer pasting, in particular to a magnetic attaching mechanism. Comprising an LCD height adjusting mechanism, a longitudinal translation mechanism is arranged at the bottom of one side of the LCD height adjusting mechanism, an electromagnet is arranged on the inner side of the bottom end of the longitudinal translation mechanism, an LCD suction plate is arranged at the bottom of the longitudinal translation mechanism, a steel belt is arranged at the bottom of the LCD suction plate, and a corner lifting mechanism is arranged at the bottom of the steel belt. The longitudinal translation mechanism comprises a connecting plate, a displacement driving motor, a lead screw, a threaded sliding block and a bottom plate, the top of the connecting plate is fixed to the height adjusting motor through bolts, the lead screw is rotationally connected to the inner side of the bottom end of the connecting plate, and the displacement driving motor is fixed to one end of the top of the connecting plate. According to the magnetic force attaching mechanism, attaching is conducted in a steel belt and magnetic force attaching mode, so that the deformation after attaching is greatly reduced, meanwhile, pressure is provided for surface contact through electromagnetic adsorption, and LCD deformation caused by polarizing plate wiredrawing is greatly reduced.

The present invention provides a bending device for steel profile processing and a bending method thereof, belonging to the technical field of steel profile bending. The bending device for steel profile processing comprises a processing table, legs and a bending mechanism, the bottom of the processing table is provided with legs, the bending mechanism is installed on the surface of the processing table, and the bending mechanism comprises a first rotating shaft, a heating chamber, a sleeve and a limit frame. The present invention sets a bending mechanism, drives the sleeve to rotate clockwise through an electric telescopic rod to perform bending, and at the same time, the bracket drives the push rod to move synchronously, thereby driving the first abutment plate to move toward the first cylinder direction, injecting air into the heating chamber through the cavity, and after being heated by the heating coil, spraying it from the first spray hole to the bending part of the profile, uniformly heating the profile, which can improve the plasticity of the material, make more deformation become irreversible plastic deformation, reduce the elastic deformation part, release and reduce the residual stress inside the profile, thereby reducing the rebound force of the profile after bending.

The invention relates to the field of slope design, in particular to a ground anchor type retaining wall structure and a design method thereof, the ground anchor type retaining wall structure is used for preventing a soil filling area in a slope from collapsing, the ground anchor type retaining wall structure comprises an anchoring part and a retaining structure, the anchoring part is located in the slope, and a pull rod is arranged between the retaining structure and the anchoring part; one end of the pull rod is connected with the retaining structure, and the other end of the pull rod is connected with the anchoring part; the anchoring part is embedded below the bottom face of the side slope, the anchoring part is not limited in the filling side slope, the anchoring part penetrates into a stable soil body of the side slope, the soil retaining structure is arranged in the side slope, and the anchoring part is arranged in the side slope in an inclined mode, and the end, connected with the soil retaining structure, of the pulling rod is higher than the end, connected with the anchoring part, of the pulling rod. Therefore, the shear strength and the friction force of the stable soil body are fully utilized to provide larger counter force.

The utility model discloses a discharging mechanism of a concrete mixing tank, the discharging mechanism comprises a moving assembly and a sealing assembly, the moving assembly is connected with the sealing assembly, so that the moving assembly drives the sealing assembly to move, the sealing assembly comprises a tank door and a sealing ring, the sealing ring is connected with the tank door, and a chamfer is arranged on the sealing ring. And the sealing ring has a certain length, so that the sealing ring is still parallel to the rim at the discharge port of the tank body after being abraded, and further, stable sealing can still be achieved after the sealing assembly is moved through the moving assembly. The discharging mechanism has the effect of improving the durability and the sealing performance of the discharging mechanism of the concrete stirring tank.

This invention relates to the field of gearbox technology, and in particular to a gear shifting control system for a gearbox, comprising a flexible shift fork mechanism, a shift guide drum, a shifting control gear set, and a shifting control mechanism. The flexible shift fork mechanism includes a shift fork seat, a shift fork arm rotatably connected to the shift fork seat, and an elastic element for driving the shift fork arm to reset. When the shift fork arm swings relative to the shift fork seat, the elastic element drives the shift fork arm to reset. A shift guide groove is provided on the circumferential surface of the shift guide drum, and a shift fork protrusion is provided on the upper part of the shift fork seat, the shift fork protrusion being movably disposed within the shift guide groove. This invention uses a rotatable connection between the shift fork arm and the shift fork seat, resulting in low friction, more flexible shifting, and a longer service life for the elastic element. Furthermore, it effectively avoids damage to the ratchet teeth caused by ratchet grinding, jamming, or forced pulling, effectively extending the service life of the elastic element, the gear shifting control system, and the gearbox itself.

The application discloses a kind of automobile gearbox shell processing equipment and its processing technology, belong to automobile gearbox shell processing field.The device includes machine tool main body, drive system, numerical control system, and clamping mechanism and deformation compensation component;Deformation compensation component includes hinged seat and hinged compensation rod;Hinged seat is hinged with the middle part of hinged compensation rod, so that hinged compensation rod can swing around hinged seat;Firstly, the second lamination of second lamination is movably connected with the first lamination of first lamination end, and first lamination and second lamination are different positions on the surface of automobile gearbox shell respectively;When first lamination is subjected to pressure, hinged compensation rod swings and drives second lamination to move in opposite direction.The application realizes the lever function of hinged compensation rod by the effect of deformation compensation component, and automatically converts the elastic recess at processing point into reverse support force of adjacent point, with the advantages of effectively reducing elastic deformation in real time, improving processing precision.

The utility model discloses a novel gluing mechanism which comprises a gluing seat, an upper bearing seat, a gluing shaft and a sealing ring, the upper bearing seat is arranged at one end of the gluing seat and is provided with a first through groove, and a first bearing is arranged in the first through groove; the gluing shaft comprises a shaft body and a first end head arranged at one end of the shaft body; the first end extends into the first through groove and is arranged on the first bearing in a penetrating manner; the sealing ring is located in the first through groove; when the first end extends into the first through groove, the sealing ring is arranged on the periphery of the first end in a sleeving mode, and waterproof sealing is formed. The sealing structure further comprises a pressing ring installed on the upper bearing seat, an annular step part is arranged on the outer side wall of the sealing ring in a protruding mode, and the pressing ring presses and fixes the annular step part in the first through groove so as to press and fix the sealing ring. Therefore, through the arrangement of the single sealing ring, when the single sealing ring is extruded, the elastic deformation amount of the single sealing ring is small; besides, the annular step portion is arranged on the outer side wall of the sealing ring in a protruding mode, the annular step portion can form a clear extrusion positioning reference, the annular step portion is pressed and fixed through the pressing ring, and therefore the sealing ring can be firmly pressed, and the sealing performance of the sealing ring is guaranteed.

The utility model relates to the technical field of environmental protection equipment, concretely relates to a mud scraping subassembly, include: the mud scraping board of length extension, including the stainless steel square tube of inside hollow, and the both ends of stainless steel square tube are sealed state, set up in the both ends of mud scraping board's mobile guide pulley, the mobile guide pulley distributes in mud scraping board's two sides, the rotation axis of mobile guide pulley is with the length direction parallel of mud scraping board, the diameter of mobile guide pulley is greater than the width of mud scraping board, the mobile guide pulley slightly protrudes in the both ends of mud scraping board along its width direction.

The utility model provides a kind of torque wrench calibration loading lever device, belong to torque wrench calibration loading lever technical field, this torque wrench calibration loading lever device includes lever arm body, loading arm, support seat and force joint;The lever arm body is in slender strip structure, the loading arm is hinged connection with one end of the lever arm body by pivot axle, adjustable included angle is formed between the loading arm and the lever arm body, the support seat is fixedly arranged in the middle position of the lever arm body, the bottom of the support seat has plane support surface for carrying the weight of the lever arm body, the force joint is arranged in the other end of the lever arm body;It can solve the problem that the existing torque wrench calibration device cannot produce accurate torque output at force end after applying standard load when calibrating and loading due to unreasonable force arm proportion design between loading mechanism and supporting mechanism.

This utility model belongs to the field of industrial welding of vehicle frames, specifically a positioning and welding fixture for a FSCC (Formula Car Championship) spatial truss chassis. To ensure welding accuracy, a base frame is constructed, with a first horizontal bar, a second horizontal bar, etc., sequentially erected along the length of the base frame; a first horizontal bar is installed at the upper end of the first vertical bar; a second vertical bar is installed at the upper end of the second horizontal bar, and a first positioning plate perpendicular to the first vertical bar is fixedly installed on the first vertical bar; a fourth vertical bar is installed at the upper end of the fourth horizontal bar, and a second positioning plate is fixedly installed on the fourth vertical bar. This utility model can position the main structure of all Formula car frames, improving assembly accuracy while effectively avoiding errors caused by welding stress between adjacent parts, thus greatly improving welding precision.