79 results about "Screw post" patented technology

The invention relates to the technical field of depth measurement, and discloses a depth measuring device for rock-soil geological exploration, which comprises a well depth ruler body and a steel ruler cable connected to the well depth ruler body, the cross section of the steel ruler cable is an arc-shaped plate, the inner side of the steel ruler cable is slidably connected with a fixed plate, and two sides of the fixed plate are fixedly connected with rotating shafts. The outer wall of each rotating shaft is rotationally connected with a clamping plate, the inner side of each clamping plate is attached to the outer side of the steel ruler cable, the middle of the side, away from the steel ruler cable, of each clamping plate is fixedly connected with a fixing base, the surface of each fixing base is fixedly connected with a half-stud, the two half-studs are matched in shape and position, and the outer walls of the half-studs are in threaded connection with fixing nuts. A balancing weight is connected between the fixing nut and the fixing base in a sliding mode. According to the depth measuring device for rock-soil geological exploration, the clamping plate and the fixing plate are matched with each other, so that bending deformation of a steel ruler cable is effectively limited, and the accuracy of depth measurement is improved.

The utility model relates to fan technical field discloses a kind of high-power direct connection fan support structure, including two support frames, and the middle part of support frame is provided with locking assembly;Locking assembly includes mounting bracket, and mounting bracket is fixedly connected in the middle part of support frame, and the inside of mounting bracket is slidably connected with limit plate, and the lower surface of limit plate is fixedly connected with screw rod, and one end of screw rod is fixedly connected with connecting rod, and the both ends of connecting rod are fixedly connected with fixed sleeve, and the lower surface of fixed sleeve is provided with sucking disc, and the both sides of the inner wall of fixed sleeve are all provided with limit slot.The utility model utilizes sucking disc to adsorb ground, and simultaneously screw post drives piston plate to move up and air in sucking disc is extracted to fixed sleeve, to enhance the adsorption fastening force of sucking disc, reduce the support frame and fan to be caused by human collision and fall down;And through the adjusting rod sliding in connecting pipe, the spacing between the two support frames is conveniently adjusted to adapt to the fan of different width and volume, and the versatility of support frame is improved.

The utility model discloses a cutting device for PVC decorative plate processing, including operation panel, the same width bottom plate is swing -connected in operation platform top, the both ends of bottom plate top are swing -connected with the moving plate, the moving plate upper surface all is equipped with the sliding slot, the sliding slot below all are equipped with the length same limit slot, the both ends of moving plate all are equipped with first screw groove, the both sides of moving plate top all are equipped with two clamping devices, the sliding slot inside all swing -connected with two size mutually consistent sliding block, the limit slot inside all swing -connected with two size mutually consistent moving block, the both sides lower extreme of moving plate all are equipped with the connecting plate, the second screw groove is passed through in the connecting plate side all, the first screw groove inside swing -connected with the size first screw post that agrees with, the second screw groove inside swing -connected with the size second screw post that agrees with, the both ends of bottom plate both sides all arrange several fourth screw grooves, the utility model discloses in use can clamp the decorative plate of different size and cut.

The utility model discloses an air conditioner, which comprises a shell, a heat exchanger, a heat exchanger, a heat exchanger, a heat exchanger, a heat exchanger, a heat exchanger and a heat exchanger, the fresh air connector is connected to the fresh air inlet, the fresh air connector is provided with a plurality of screw holes which are formed in the circumferential direction of the fresh air connector at intervals, and one of the screw holes is optionally connected with the screw column through a fastener. According to the air conditioner, the pipe connecting direction of the fresh air pipe is changed, the fresh air pipe is convenient to install, the occupied space of the fresh air pipe is reduced, the distance between the air conditioner and the wall is shortened, the air conditioner is placed more flexibly, the air conditioner can adapt to different installation scenes conveniently, and the use experience of a user is improved. Moreover, the fresh air pipe does not need to be kept in an S shape, so that the problem that the air conditioner is jacked away from the wall under the action of the fresh air pipe and the air volume loss caused by pipe folding can be solved at the same time, and the reliability of the air conditioner is improved.

The utility model discloses a screw locking structure which comprises a screw, a support and a screw column. A through hole for the screw to penetrate through is formed in the middle of the bracket; a threaded hole matched with the screw is formed in the middle of the screw column. The bottom of the support is provided with a positioning part used for positioning and rotation stopping of the screw column. The bottom of the support is provided with the positioning part used for positioning the screw column and stopping rotation, so that the screw column can be accurately positioned and stopped from rotating, the screw can be conveniently screwed in, the operation convenience is improved, the assembly efficiency is improved, meanwhile, the assembly precision is stably guaranteed, and the situation that the assembly is not in place is avoided.

The utility model relates to an anti-loosening crown block disc OHT mounting structure which is arranged on a wafer box POD and a crown block disc OHT. The anti-skidding structure comprises a strength screw column arranged on the wafer box POD, an anti-skidding screw column arranged on the crown block disc OHT, and a printing screw. The strength screw column comprises a strength column and a fixing column. And a reinforcing layer is arranged in the strength column. The anti-skid screw column comprises an anti-skid screw column body and an anti-skid rib arranged on the inner periphery of the anti-skid screw column body. The antiskid ribs are provided with installation grooves, and the installation grooves are provided with printing patterns. The printing screw comprises a screw head and a screw rod. And a clamping edge is arranged at the bottom of the screw head. And the card edge is provided with a print. According to the anti-loosening crown block disc OHT mounting structure, the reinforcing layer is arranged on the strength column, the anti-skid ribs are arranged in the anti-skid screw column, and the printed screws are used, so that the wafer box POD and the crown block disc OHT can be stably connected for a long time and are difficult to shake.

The utility model provides a stud dismounting tool which comprises a stud, an internal thread sleeve and a tool withdrawal groove, the internal thread sleeve is sleeved on the outer side of the stud in a threaded mode, the tool withdrawal groove is arranged on the inner side of the internal thread sleeve, the thread directions of the internal thread sleeve above and below the tool withdrawal groove are opposite, and a screw column is sleeved inside the top end of the internal thread sleeve in a threaded mode. A clamping plate is clamped to the inner side of the top end of the screw column, and a fixing sleeve located on the inner side of the tool withdrawal groove sleeves the outer side of the bottom end of the screw column in a threaded mode. According to the stud dismounting tool, quantitative lubricating oil can be added into the stud through the oil hole, then abrasion between the stud and the steel ball can be reduced, and when the steel ball makes contact with the stud and rotates the stud, due to the fact that the lubricating oil layer is attached to the surface of the steel ball, the stud can be dismounted more stably. The friction force between the steel ball and the stud and the friction force between the steel ball and the stud are small, so that the resistance needing to be overcome in the rotating process of the stud is small, and the stud can be tightened or loosened conveniently.

The utility model relates to the technical field of power industry, in particular to a cover plate convenient for opening and closing a cable trench, which comprises a plate body positioned on the cable trench, an expansion bolt body mounted in the plate body, a screw column mounted on the plate body and extending into the expansion bolt body, and a lifting ring arranged on the screw column. The expansion bolt body is installed by forming the positioning groove in the plate body, and the screw column in the hanging ring extends into the expansion bolt body, so that tools such as a crowbar do not need to be used when the plate body is opened, the working intensity of an operator is reduced, and the plate body is convenient to open; the movable block is extruded by the bolt column to enable the fixed port to extend into the plate body, so that the plate body and the expansion bolt body are quickly connected, the surrounding encapsulation of the cover plate of the power trench cannot be damaged when the plate body is opened, the hidden effect is achieved after the lifting ring is detached, the appearance of the cover plate is not affected, and the cover plate can be conveniently used when needed.

The utility model provides a mop head sleeve capable of preventing a floor from being scratched. The mop head sleeve comprises a mop rod connector, the protective cover comprises a protective cover body, a top inserting hole used for being in butt joint with a mop rod connector is formed in the top of the protective cover body, and a center threaded inserting cylinder communicated with the top inserting hole is arranged below the top inserting hole. A threaded column arranged on the mop rod connector penetrates through the top insertion hole, then is inserted into the central threaded insertion cylinder and is in threaded connection with the central threaded insertion cylinder, and side insertion cylinders are symmetrically arranged on the left side and the right side of the central threaded insertion cylinder; and the anti-scraping plate comprises an anti-scraping plate body, the anti-scraping plate body is provided with two screw columns protruding upwards, and the screw columns are correspondingly inserted into the side insertion cylinders of the protection cover and locked through screws. The mop head sleeve capable of preventing the floor from being scratched is simple in structure, easy to assemble and disassemble and capable of preventing the floor from being scratched.

The utility model relates to the technical field of installation of automobile interior trim panels, and discloses a screw stud anti-thread-slipping structure of an automobile interior trim panel, two supporting seats are integrally formed on one side of an interior trim panel body and located on the outer side of a cylinder body, and two screw stud bodies are fixedly connected to one sides of the two supporting seats respectively. Connecting holes are formed in one ends of the two screw column bodies, arc-shaped faces are arranged at the ends of the connecting holes, and positioning assemblies are arranged on the sides, located on the two screw column bodies, of the two supporting bases. According to the self-tapping screw, through the arrangement of the arc-shaped surface on the inner side of the screw column body, the self-tapping screw can be guided, meanwhile, the temperature generated during tapping is reduced, the stability of the self-tapping screw during tapping is enhanced, and the condition of screw loosening during tapping of the self-tapping screw is prevented; and through arrangement of the positioning columns, positioning during installation of the interior trimming panel body can be assisted, correction of the installation positions of the installation holes and the screw column bodies can be rapidly completed, and the assembly efficiency of the interior trimming panel body can be improved.

The utility model provides an adjustable pipeline support which comprises a pipe column, a fixed bracket is installed on the top of the pipe column, a U-shaped screw rod is arranged on the upper side of the fixed bracket, the two ends of the U-shaped screw rod are sleeved with movable brackets, the two ends of the U-shaped screw rod are in threaded connection with positioning nuts, and the two ends of the U-shaped screw rod are in threaded connection with the movable brackets. Supporting lugs are installed in the middles of the two parallel side faces of the fixed bracket correspondingly, horizontal studs are inserted into small holes of the supporting lugs, limiting nuts in threaded connection with the horizontal studs are arranged on the two sides of the supporting lugs correspondingly, the two ends of the horizontal studs are sleeved with connecting lugs correspondingly, the connecting lugs are fixedly connected with the movable bracket, and the movable bracket is fixedly connected with the movable bracket. The two ends of the horizontal stud are in threaded connection with end nuts, the end nuts are arranged on the sides, away from the supporting lugs, of the connecting lugs, and the supporting seat has the advantages that supporting seats of different specifications do not need to be manufactured, and the supporting seat is suitable for the requirements of different pipelines.

The utility model discloses a reinforcing steel bar splicing device for building engineering, including support, the top and bottom of support surface all are provided with clamp seat, the right side fixedly connected with the jaw of clamp seat, the front of clamp seat is provided with clamping subassembly, clamping subassembly includes the fixed connection of screw bushing of clamp seat front, the inner chamber screw thread connection of screw bushing has screw resistance post, the inner chamber of jaw is provided with the clamping block of slidable, the right -hand member fixedly connected with screw post of clamping block, the right side of jaw is provided with rotatable screw bushing through setting, the utility model discloses the cooperation of jaw and clamping subassembly is used to two different diameter reinforcing steel bars, and the clamping is fixed, and then carries out welding to two reinforcing steel bars through welding machine, when welding, through the cooperation of clamp seat, gear box and elevating unit, the butt joint of upper reinforcing steel bar is carried out and presses down, can reach the purpose of accurate butt joint of axial position and the splicing of different diameter reinforcing steel bars.

The utility model discloses a kind of forming devices of porous alumina ceramics, comprising: reinforcing part, the reinforcing part inside is provided with forming piece, forming plate is provided in the forming piece, upper cover is inserted on the forming piece, and forming plate top end penetrates upper cover, fixed plate is inserted on the upper cover, and fixed plate is inserted with forming plate;Through the screw post of reinforcing part and handle cooperation, reverse rotation can quickly release clamping force, take out forming assembly, through the plug-in block of forming piece and the plug-in slot insertion, after drying, plug-in block can be separated left and right box body, through the fixed plate insertion locking of upper cover, after pulling out, upper cover can be quickly taken down forming plate by lifting, realize efficient demoulding.

The utility model relates to the technical field of industrial factory building independent foundation pouring, in particular to a convenient scaffold for industrial factory building independent foundation pouring, which comprises a scaffold body, the scaffold body comprises a vertical rod, a cross rod, a diagonal bridging and a scaffold board, an adjusting box is arranged at the bottom of the vertical rod, and a foot supporting seat is arranged below the adjusting box. A leveling assembly is arranged between the adjusting box and the foot support seat, a plurality of reinforcing assemblies are arranged below the foot support seat, the leveling assembly comprises a worm gear arranged in an inner cavity of the adjusting box, one side of the worm gear is connected with a worm in a meshed mode, an adjusting stud is fixedly connected to the center of the bottom of the worm gear, and an adjusting screw groove is formed in the center of the top of the foot support seat. When the ground where the scaffold is placed is bumpy and uneven, leveling treatment can be conducted, the situation that the scaffold inclines due to the uneven foundation is avoided, uneven stress, deformation and damage of the vertical rods are avoided, the overall structural strength is guaranteed, meanwhile, unbalance overturning under construction loads due to inclination is avoided, and casualties and property losses are prevented.

The utility model discloses an ejector sleeve pin mechanism and a plastic part, and mainly relates to the technical field of stud machining. Which comprises an ejector sleeve pin and an ejector sleeve, the ejector sleeve pin comprises a head part and an end part, and is characterized in that the end part of the ejector sleeve pin is provided with a fastener which is movably inserted with the ejector sleeve pin, the fastener is fixed at the root part of a screw column based on insert molding, and the peripheral side of the fastener is provided with a convex part. The utility model has the beneficial effects that the wall thickness of the nail column can be ensured to be uniform, so that the condition that the appearance surface of a plastic part shrinks is reduced.

The application discloses a sliding ring gap adjusting structure and relates to the technical field of seed meters. The sliding ring is sleeved on the back plate bearing seat, is fixedly connected with the back plate bearing seat in the circumferential direction and can axially slide relative to the back plate bearing seat. The screw post is fixed on the back plate bearing seat. The bolt is threadedly connected with the screw post. The connecting piece comprises a screw sleeve, a convex ring and a twisting block which are coaxially arranged. The screw sleeve is threadedly connected with the screw post. The screw sleeve and the twisting block are fixedly connected with the convex ring at one end, respectively. The through hole is arranged on the sliding ring and corresponds to the screw sleeve. The screw sleeve passes through the through hole. The diameter of the convex ring is larger than that of the through hole. The through hole is located between the screw post and the convex ring. The convex ring is in abutment with the sliding ring. The knob comprises a screwing part and a clamping part which can be clamped in the circumferential direction on the twisting block. The screwing part is provided with a screwing opening. The limiting sheet is connected with the sliding ring through the screw. The limiting sheet is used for limiting the rotation of the screwing part. The size of the finger clamping opening of the finger clamping type seed meter is conveniently adjusted.

The utility model provides a building electromechanical pipeline laying structure which comprises two right-angle angle irons, kidney-shaped holes are formed in the upper surfaces of the right-angle angle irons, detachable lifting pieces used for being installed on an indoor top plate are installed in the kidney-shaped holes, supporting lugs are installed on the vertical portions of the two right-angle angle irons, and the supporting lugs are connected with the right-angle angle irons. Penetrating holes are formed in the opposite faces of the two supporting lugs, a straight threaded cylinder is arranged between the two supporting lugs, two studs are in threaded connection with the interior of the straight threaded cylinder, the ends, located on the outer side of the straight threaded cylinder, of the studs penetrate through the penetrating holes, and limiting nuts are arranged on the two sides, in the length direction of the studs, of the penetrating holes; the two right-angle angle irons are connected with the stud in a threaded mode, the limiting nuts are connected to the stud in a threaded mode, positioning sleeves are installed on the horizontal portions of the two right-angle angle irons, and a lifting piece used for lifting a pipeline is installed between the two positioning sleeves. And right-angle angle irons with different lengths are not required to be manufactured.

The utility model discloses a bean bin cover of a bean grinder, which comprises a cover body and a bin body, the bottom of the cover body is embedded into the inner side of the bin body, an annular magnet is arranged on the inner side of the cover body, a first screw column is arranged above the annular magnet and is integrally connected with the cover body, a plurality of arc-shaped iron bars are arranged on the inner side of the bin body, an air chamber is arranged above the cover body, and a screw cover is arranged at the top of the cover body. The annular magnet is integrally cast, a plurality of screws are arranged in the annular magnet in a penetrating mode, and the screws are connected with the first screw columns through threads after penetrating through the annular magnet; a supporting piece is arranged at the bottom of the arc-shaped iron bar, the supporting piece and the cabin body are formed through integral injection molding, a second screw column embedded into the inner side of the arc-shaped iron bar is arranged on the supporting piece, a plurality of screws penetrate through the arc-shaped iron bar, and the screws penetrate through the arc-shaped iron bar and then are connected with the second screw column through threads; the utility model has the advantages of simple structure, strong stability, stable sealing performance and good usability.

The utility model relates to the technical field of injection molds, and discloses a high-position screw column body forming structure which comprises a plastic column body and an inner mold body, the plastic column body and the high-position screw column body are integrally formed, a forming cavity with an opening in the top is formed in the inner mold body, the plastic column body is located in the forming cavity, and the plastic column body and the forming cavity are coaxially arranged; through tight combination of the plastic column body and the screw column position, firm installation is ensured, the overall performance of a product is not affected, the problem that the appearance surface of the screw column position shrinks is effectively solved, the appearance quality of a plastic product is remarkably improved, the plastic column body is subjected to injection molding through waste materials, the production cost is greatly reduced, and the requirement for raw materials is reduced; meanwhile, the waste treatment cost is also reduced; the problem that the screw column is easily shrunk due to complete glue injection molding is solved.

The utility model provides an injection mold for preventing a screw column of a product from being jacked to be concave, which comprises a rear mold core, a groove for placing the product is arranged at the top of the rear mold core, a plurality of groups of ejection components are arranged at the bottom of the rear mold core, each ejection component comprises an ejector sleeve inner needle, and the top of each ejector sleeve inner needle is arranged in one group of product screw columns at the bottom of the product in a penetrating manner; the outer side of the ejector sleeve inner needle is sleeved with a slidable ejector sleeve, the top end of the ejector sleeve is in contact with a product screw column, and the bottom of the ejector sleeve inner needle is arranged in the delay sleeve in a penetrating mode; through the arrangement of the ejector sleeve inner needle and the ejector sleeve sleeve, the ejector sleeve inner needle firstly ejects a product for a certain distance, so that the wrapping force of the product to the ejector sleeve inner needle is reduced, and then the ejector sleeve is ejected to a final state to complete ejection and demolding of the product, so that the end surface of a screw stud cannot be concaved by ejection; the injection mold solves the problem that the end face of a product stud is prone to being jacked and deformed by a traditional injection mold, the integrity of the product stud is ensured, and the quality and appearance of the product are improved.

The utility model relates to an automatic nail burying device which comprises a three-axis linear sliding rail and a forming machine, the forming machine comprises a male mold and a female mold which are used for injection molding of a rear shell of a display, and four screw columns distributed in a rectangular shape are arranged on the male mold; a mechanical arm is arranged on the three-axis linear sliding rail, and the three-axis linear sliding rail is used for driving the mechanical arm to move in the X-axis direction, the Y-axis direction and the Z-axis direction. The mechanical arm comprises a supporting frame, a pneumatic suction cup is arranged on one side of the supporting frame, four containing pipes are arranged at the other end of the supporting frame, the containing pipes are used for containing screws, and driving parts are arranged in the containing pipes. Automatic nail burying can be carried out on the male die of the forming machine, manual intervention can be remarkably reduced, and therefore the production speed is increased, and the overall production efficiency is improved. And meanwhile, automatic production reduces the manpower demand, and the labor cost is reduced.

The auxiliary wheel device of the two-wheeled electric vehicle comprises an auxiliary wheel support and the electric push rod, the auxiliary wheel support comprises an inverted-U-shaped frame, auxiliary wheels, screws and screw nuts, the two auxiliary wheels are installed at the two ends of the bottom of the inverted-U-shaped frame respectively, and the two ends of the top of the inverted-U-shaped frame are provided with screw installation blocks with screw holes respectively. The two ends of the screw movably penetrate through two screw mounting blocks with screw holes and then are in threaded connection with screw nuts, an electric push rod connecting piece is mounted on at least one side of the bottom of the inverted-U-shaped frame, and the electric push rod is mounted on the electric push rod connecting piece through a screw column and a screw column nut. The auxiliary wheel of the device can be lifted or lowered, so that the balance of the two-wheeled electric vehicle is kept, and a green hand is assisted to learn to ride the two-wheeled electric vehicle more quickly.

The utility model provides an integral well completion pipe column relates to well completion pipe column technical field, include: well completion pipe column body, the well completion pipe column body upper end pipe is connected with the oil pipe, the well completion pipe column body outer pipe face welds has the link block, the link block outside inserts the support plate, the support plate is fixed with the link block through the location screw post and the nut and screws, the support plate outside end is connected with the link frame through the limiting block, the link frame and the limiting block interval between the adhesion has the damping block, the link frame side end welds has the well wall fixed part, the well wall fixed part side end is connected with the support plate through the hydraulic buffer, the well completion pipe column body upper end face presses down has the sealing press plate, the sealing press plate lower end face holds the sealing inner race and sealing outer race through the ring air bag. The utility model has solved the vibration load of high pressure fluid impact in prior art well completion pipe column, is easy to cause the problem of the fixed assembly fixed unstable influence well completion pipe column stability.

The utility model discloses a space curved surface structure formwork supporting top component which comprises a vertical rod, a mounting ring is fixed to the top of the vertical rod through bolts and located at the bottom of a supporting table, positioning plates are fixed to the two sides of the supporting table through bolts, rotating shaft screw columns are installed in the centers of the positioning plates, and the rotating shaft screw columns are connected with the vertical rod through bolts. The rotating shaft screw column penetrates through the rotating block, the rotating block is located at the bottom of the supporting plate, a supporting beam is installed on the upper surface of the supporting plate, and limiting mechanisms are arranged on the two sides of the supporting beam. The limiting mechanism comprises limiting plates, cams, a damping rotating shaft and a handle, the limiting plates are arranged on the two sides of the joist, the cams are installed on the outer sides of the limiting plates in an abutting mode, and the cams are rotationally connected with the supporting plates through the damping rotating shaft. The limiting plates on the two sides are tightly attached to the joist, then the limiting teeth are fastened, and the joist is prevented from sliding on the surface of the supporting plate.

The application belongs to the technical field of steel pipe finishing, and discloses a long steel pipe automatic finishing equipment, which comprises an operating table, a bearing frame and a finishing robot. The operating table is arranged on a support, a stand is arranged on the operating table, a driving structure is arranged at the bottom of the operating table, a bearing block which is movably connected with the driving structure is arranged on the operating table, a rotating structure and a limiting structure are arranged on the bearing block, the bearing frame is arranged on the stand, an adjusting structure is arranged on the bearing frame, and the finishing robot is arranged on the adjusting structure. The double-shaft motor drives the rotating screw post to rotate, the rotating screw post drives the connecting screw cylinder to move back and forth, the bearing block moves back and forth in the bearing groove on the operating table, the long steel pipe is conveniently held from the appropriate position, the stability of the long steel pipe in the finishing process is improved, the finishing equipment is applicable to long steel pipes of different sizes, the versatility of the finishing equipment is improved, and the application range of the finishing equipment is expanded.

The utility model discloses an extrusion forming die for an aluminum profile of a driving device, which comprises an upper die and a lower die, a die core is arranged at the bottom of a connecting column protruding from the middle of the bottom surface of the upper die, and a plurality of flow dividing holes which are circumferentially spaced and vertically penetrate through the upper die are formed in the periphery of the connecting column; a plurality of forming holes are formed in the peripheral wall of the mold core in an inwards-concave mode and penetrate through the lower end face of the mold core, and a forming wall is arranged between every two adjacent forming holes. The forming holes comprise larger screw column forming holes and smaller tooth forming holes; a flow guide opening is formed in the position, corresponding to the screw column forming hole, of the joint of the connecting column and the mold core in a concave mode, and the flow guide opening is inwards concave and downwards extends to communicate with the screw column forming hole. The width of the forming wall is larger than that of the tooth forming hole, and a mold core flow stopping block is arranged on the forming wall in an outward protruding mode. Therefore, the structural strength of the screw column of the extruded aluminum profile can be effectively improved.

The utility model relates to the field of charging piles, in particular to a magnet adsorption quick mounting structure for a charging pile, which comprises a lower shell, an upper shell is arranged at the top of the lower shell, two first positioning columns are fixedly connected to the left side of the bottom of the upper shell, and threaded holes are formed in the tops of inner cavities of the first positioning columns. A countersunk head screw is arranged at the bottom of the first positioning column, and the surface of the countersunk head screw is sleeved with a magnet. Through the arrangement of the limiting mechanism, the effect of fixing the position of the cross-shaped round-head screw is achieved, the cross-shaped round-head screw is not prone to shaking when connected with a large flat-head screw column, meanwhile, when threads on the surface of the cross-shaped round-head screw are abraded, the cross-shaped round-head screw can be easily and conveniently detached, a user can conveniently replace the cross-shaped round-head screw, and the practicability of the cross-shaped round-head screw is improved. And due to the arrangement of the locking mechanism, the wedge-shaped block is tightly pressed in the inner cavity of the positioning block through the resilience force of the second spring, so that tight and stable connection between the upper shell and the lower shell is ensured.

The utility model relates to the technical field of robot automatic gluing, and discloses a tool for robot automatic gluing rapid teaching, which comprises a base, the top of the base is rotatably connected with a mechanical arm, the bottom of the mechanical arm is fixedly connected with a fixing block, the bottom of the fixing block is fixedly connected with an arc-shaped block, and the arc-shaped block is fixedly connected with the bottom of the mechanical arm. The outer wall of the arc-shaped block is fixedly connected with a threaded column, the outer wall of the threaded column is in threaded connection with a connecting column, the bottom of the connecting column is fixedly connected with a plurality of fixing columns, the bottom side of the connecting column is fixedly connected with a buffer spring, and the bottoms of the fixing columns are fixedly connected with a fixing disc. According to the buffering device, the conical block on the fixing disc is taken down firstly, then a new L-shaped clamping block is inserted into the clamping hole, rapid replacement is achieved, when different buffering springs are replaced, only the connecting column needs to be rotated to remove connection on the threaded column, replacement can be completed, and then the buffering device adapts to different metal plate gaps.

The utility model relates to the technical field of resistance welding, and discloses a resistance welding transformer for welding aluminum plates, which comprises a welding head, a mounting shell is fixedly mounted at the top of the welding head, a sealing plate is arranged on the outer wall of the mounting shell, the inner wall of the sealing plate is in threaded connection with a fixing bolt, the inner wall of the welding head is in sliding connection with a sliding plate, and the sliding plate is in threaded connection with the sealing plate. The outer wall of the sliding plate is slidably connected with a lifting L-shaped plate, and the top of the lifting L-shaped plate is provided with a transformer body. By rotating a rotating rod, the rotating rod drives bevel gears to rotate, the two bevel gears rotate at the same time through meshing, then a threaded column rotates, the threaded column drives a lifting block to move upwards, a lifting L-shaped plate drives a transformer body to move upwards, at the moment, a pull rod is pulled, and then the pull rod drives a locking plate to move; and at the moment, a sliding plate is pulled, so that the sliding plate drives the lifting L-shaped plate and the transformer main body to move out of the inner wall of the welding head, and the welding head can be observed conveniently.