390 results about "Cross slot" patented technology

The invention provides a superstrong anti-theft device for commodity display, which comprises a bottom column, the top end of the bottom column is rotatably connected with a cross-shaped bottom shell, the top end of the cross-shaped bottom shell is provided with a cross-shaped groove, the cross-shaped groove is internally and fixedly provided with a cross-shaped bracket, and the end of the cross-shaped bracket is symmetrically and slidably provided with two groups of vertical clamping jaws and two groups of transverse clamping jaws. The outer side walls of the two sets of vertical clamping jaws and the outer side walls of the two sets of transverse clamping jaws are slidably connected with the inner wall of the cross-shaped bottom shell. And a locking assembly is mounted on one side of the end of each cross-shaped bracket. The vertical clamping jaw and the transverse clamping jaw which can be independently adjusted are arranged on the cross-shaped bracket, mobile phones of different models and sizes can be rapidly locked, high applicability is achieved, meanwhile, through cooperation of the cross-shaped bottom shell, a locking mechanism on the cross-shaped bracket can be rapidly locked, and it is guaranteed that after the mobile phones are clamped, the mobile phones can be rapidly locked. Compared with the prior art, the device has the advantages of being high in stability, high in hiding performance, not prone to being found or broken and high in safety.

The utility model relates to the technical field of electric locomotives, in particular to a mining explosion-proof lithium ion electric locomotive structure which comprises an electric locomotive body and a mounting box and is characterized in that the mounting box is mounted in the electric locomotive body, cross grooves are formed in the inner walls of the two sides of the mounting box, first buffer mechanisms are arranged in the cross grooves, and second buffer mechanisms are arranged in the cross grooves. A first buffering mechanism is arranged at the bottom of the mounting box, a second buffering mechanism is arranged at the bottom of the mounting box, a top cover is arranged at the top of the mounting box, a limiting mechanism is arranged at the bottom of the top cover, the first buffering mechanism comprises a cross-shaped rod, the cross-shaped rod is slidably mounted in a cross-shaped groove, and a fixing cylinder is fixedly connected to the side wall of the cross-shaped rod. Through the combined action of the first buffering mechanism, the second buffering mechanism and the limiting mechanism, when collision occurs, the storage battery is protected to a certain degree, the situation that the storage battery is damaged is avoided, and then the possibility that the storage battery explodes is reduced.

The utility model discloses a wheel type probe sealing mechanism which comprises a wheel shaft (5) connected with a wheel hub (1), the wheel shaft (5) is of a split type structure and comprises an upper half shaft (51) and a lower half shaft (52) which are matched with each other, the two sides of the upper half shaft (51) are respectively provided with a group of upper screw holes (51a), and the two sides of the lower half shaft (52) are respectively provided with a group of lower screw holes (52a); a cross recess screw (8) is connected in the corresponding upper screw hole (51a) and the lower screw hole (52a), the upper half shaft (51) is fixedly connected with the lower half shaft (52) through the cross recess screw (8), and a framework sealing ring (6) and an oil seal check ring (7) are arranged between the inner end of the wheel shaft (5) and the hub (1) after the upper half shaft (51) and the lower half shaft (52) are combined. The hollow shaft has the advantages that threading of the hollow shaft is facilitated, sealing performance is improved, dismounting and mounting are facilitated, and sealing and rotating are both considered.

The utility model relates to the field of flange plate machining, in particular to a clamping device for machining an automobile flange plate, which comprises a chassis, a cross recess A is arranged at the upper end of the chassis, a cross recess B is arranged inside the chassis, the cross recess A and the cross recess B are communicated with each other, and clamping components are arranged on the cross recess B and the cross recess A. The first air cylinder and the second air cylinder are started, the telescopic rods of the first air cylinder and the second air cylinder drive the first clamping block on the first sliding block and the second clamping block on the second sliding block to synchronously diffuse in the direction away from one end of the axis of the base plate, and then the loading disc is placed on the clamping assembly. The inner wall of the loading disc is clamped through the arc-shaped outer walls of a first clamping block and a second clamping block, and in the clamping process, a second sliding groove in a second sliding block is limited through a second limiting column, and a first sliding groove in a first sliding block is limited through a first limiting column; the problem that flange plates of different sizes are inconvenient to clamp is solved.

The invention relates to the technical field of cross recess milling, in particular to a universal connecting shaft cross recess milling device which comprises a case. A lifting platform and a base are mounted on the case; a hydraulic cylinder is rotationally mounted on the rotating base; a clamping block is fixedly mounted on the hydraulic cylinder; the case is provided with a tool apron; a positioning structure is arranged on the case and can drive the tool apron to be close to or away from the lifting table so as to drive the milling cutter to be close to the to-be-machined workpiece; a travelling crane structure is arranged on the case; the traveling structure can drive the cutter holder to reciprocate so as to drive the high-speed rotating milling cutter to travel according to a set track; a turnover structure is arranged on the machine box, and the turnover structure can drive the rotating base to rotate by 90 degrees and can drive the hydraulic cylinder to turn over by 180 degrees, so that the clamping blocks are driven to turn over synchronously, and a machined part is turned over; through the overturning structure, the offset distance between the intersection center of the longitudinal straight groove and the transverse straight groove and the central axis of the machined part can be reduced, so that the working efficiency of the universal connecting shaft is improved, and the machining efficiency can be effectively improved.

The invention belongs to the field of microwave wireless power transmission, and discloses a transparent linear circular polarization converter applied to microwave wireless energy transmission, which is composed of five layers of structures: a first layer is a cross patch with an inclined angle of 45 degrees, a cross recess is formed in the middle of the cross patch, and the whole body is composed of a cell with the external size of 1 * 1mm and the internal size of 0.95 * 0.95 mm; the wire width of all the copper wires is 0.05 mm; the second layer is a square substrate pet, the dielectric constant is 3.5, and the dielectric loss angle tangent is 0.03; the third layer is formed by splicing four isosceles right triangles, and the length of the right-angle side of each triangle is equal to half of the unit period; and the fourth layer and the fifth layer are completely the same as the second layer and the first layer. According to the invention, linear polarized waves can be effectively converted into circularly polarized waves in a microwave frequency band, high light transmittance can be maintained, and the device is suitable for being applied to intelligent windows, photovoltaic-microwave hybrid energy systems and other scenes.

The utility model discloses a contourgraph for detecting the processing precision of a shaft hole of a transmission shaft, and particularly relates to the field of contourgraphs, the contourgraph comprises a support frame, the top of the support frame is fixedly connected with a fixed rotating mechanism for detecting the transmission shaft, the fixed rotating mechanism comprises an outer shell, one side of the outer shell is fixedly connected with a motor I, and the other side of the outer shell is fixedly connected with a motor II. The first motor is connected with a rotating disc through an output shaft, an electric push rod is fixedly connected into the rotating disc, a cross-shaped rack is fixedly connected to the top end of the electric push rod, and a semicircular gear and a clamping plate are connected to the outer side of the cross-shaped rack in an engaged mode. According to the utility model, the electric push rod drives the cross-shaped rack to translate outwards to drive the semicircular gear and the clamping plate to rotate in the cross-shaped groove to fix the transmission shaft, and then the motor I drives the turntable to rotate in the outer shell to drive the transmission shaft to rotate, so that the inner wall of the rotating annular object to be detected can be converted into a translated plane; later measurement is facilitated, the measurement precision is improved, and the usability of the device is improved.

The application relates to the technical field of shaped steel column, in particular to a shaped steel column structure capable of shock isolation, which comprises a column body assembly, a shock isolation assembly and a connecting assembly; the column body assembly comprises a cross plate and four groups of connecting plates connected to the cross plate, the top of the cross plate is provided with a cross groove, the bottom of the cross plate is provided with a cross mounting groove, the connecting assembly capable of being arranged in the cross groove and the cross mounting groove is arranged in the cross groove, the shock isolation assembly is arranged at the bottom of the cross plate, the shock isolation assembly comprises a protection box and a mounting plate, X-direction sliding buffer pieces and Y-direction sliding buffer pieces are arranged in the protection box; the X-direction sliding buffer pieces and the Y-direction sliding buffer pieces are matched in the application and can move within a certain range, the influence of external vibration on the shaped steel column as a whole is reduced, the influence of passive stress of the building system is reduced, and the adjacent column body assemblies can be stably spliced.

The utility model provides a municipal pipeline desilting device, which relates to the field of municipal engineering technology. The municipal pipeline desilting device comprises a mounting tube, a large gear is provided inside the mounting tube, a driving assembly is provided on one side of the large gear, a plurality of small gears are meshed and connected to the outer side of the large gear, a transmission rod is fixedly connected to the inner side of the small gear, and both ends of the transmission rod are rotatably connected to the mounting tube. In the municipal pipeline desilting device, the output end of the forward and reverse motor drives the rotating rod to rotate forward, the rotating rod drives the large gear to rotate, the large gear is meshed and connected with a plurality of small gears, the small gear drives two transmission gears to rotate through the transmission rod, the transmission gear is meshed with the rack, the rack drives the cross rod to slide inside the cross groove, and the roller is driven to move in the direction away from the mounting tube through the cross rod. This structure can adjust the position of the roller synchronously without the need for individual operation, thereby improving the practicality of the device.

The utility model relates to the technical field of flange nut machining, in particular to a machining device for hexagonal flange nut assembly production, which comprises a base, a U-shaped frame fixedly mounted at the upper end of the base, cross-shaped grooves formed in the side walls of the two sides of the U-shaped frame, and a hydraulic oil cylinder fixedly mounted at the upper end of the U-shaped frame. An electric telescopic rod is installed at the output end of the hydraulic oil cylinder, a fixing seat is fixedly installed at the lower end of the electric telescopic rod, sliding grooves are symmetrically formed in the fixing seat, side rods are fixedly installed on the side walls of the two sides of the fixing seat, a placing frame is fixedly installed at the upper end of the base, and a circular groove and an inner groove are formed in the upper end of the placing frame; the sliding frames are evenly and slidably installed in the inner wall of the inner groove at equal intervals, the wedge-shaped blocks are fixedly installed at the opposite ends of the sliding frames, the second springs are fixedly installed on the sliding frames, and through the mode that the wedge-shaped blocks are fixed towards the middle, the hexagonal flange nut can be always kept in the center position when placed and is not prone to deviation; and the tapping accuracy and effect are enhanced.

The utility model provides a sample separation device, which belongs to the technical field of agricultural product detection, and solves the problem that in the use of the existing sample separation device, when it is necessary to separate the juice of the crop of the same type after separating the juice in the agricultural product, the sample separation device usually needs to be cleaned before use, and the time interval is long, which affects the work efficiency. The utility model comprises: the fixing frame is fixedly connected to the outer side of the base; the pressing component is fixedly installed on the upper end surface of the fixing frame; the pressing plate is fixedly connected to the lower end of the pressing component; the ball bearings are provided, and the multiple ball bearings are rotatably connected to the inner side of the base; the turntable is rotatably connected to the upper end surface of the base; the annular groove is provided on the lower end surface of the turntable; the cross grooves are provided, and the multiple cross grooves are provided on the inner side of the turntable; through the arrangement of the utility model, the conversion of the pressing cylinder is realized, the pressing interval is reduced, and the work efficiency is improved.

The invention provides a cable laying large-inflection-point intelligent pulley block which comprises a mounting block, cross grooves are formed in the left side and the right side of the mounting block, a pulley assembly is arranged at the bottom of the mounting block, and the pulley assembly comprises an upper flange plate, a lower flange plate, sub-pulleys and through bolts. The upper flange plate is movably connected to the bottom of the mounting block through a bearing, the lower flange plate is located at the bottom of the upper flange plate, and the six sub-pulleys are located on the inner side of the upper flange plate and the inner side of the lower flange plate. Therefore, the joint of the cable and the traction rope is effectively prevented from being clamped on the inner side of the sub-pulley, and meanwhile, the upper flange plate can drive the pulley assembly to rotate integrally, so that when the unequal-diameter part of the cable is dragged to pass through the adjusting assembly, the cable can pass through a large corner smoothly without obstacles, resistance-free traction is realized, and more than 50% of manpower is saved; and smooth traction construction is guaranteed.

The utility model belongs to aluminium ingot technical field, specifically disclose a aluminium ingot structure convenient to extraction, including base and aluminium ingot body, the top of base is connected with mounting panel of sliding, be provided with buffer mechanism between base and mounting panel, in the utility model, if the staff needs to stack aluminium ingot body, can insert the plug -in block below an aluminium ingot body into the inside of cross groove above mounting panel, subsequently the plug -in block below the subsequent aluminium ingot body is inserted into the inside of cross groove that aluminium ingot body below it opened, if the staff needs to extract the most top aluminium ingot body, the staff can extract the most top aluminium ingot body through the grab groove, in addition, when the staff drives small forklift to carry the aluminium ingot of stacking, through the downshift of mounting panel, can avoid the damage problem caused by the greater pressure of the fork to the top of mounting panel.

The utility model relates to the field of stop valves, in particular to a flange type high-flow stop valve which comprises a high-flow stop valve body, a main body for bearing medium circulation, a circulation block and a torsion spring arranged in the high-flow stop valve body and used for assisting medium circulation. The flange type large-flow stop valve is provided with the valve clack, the threaded rod, the butt-joint block, the cross groove, the anti-theft ring and the cross block, when the flange type large-flow stop valve is used, the anti-theft ring connected with the hand wheel can be directly arranged on the butt-joint block at the top of the threaded rod in a sleeving mode, the cross block is matched with the cross groove, and therefore the threaded rod can be twisted through the hand wheel, and the anti-theft effect is achieved. According to the flange type large-flow stop valve, the valve clack is driven to move in the large-flow stop valve body, so that the size of a medium flowing out of the valve body is controlled, the hand wheel can be directly taken away when the valve is not used and closed, external personnel cannot twist the threaded rod only through the butt joint block, and therefore external operation safety of the flange type large-flow stop valve is guaranteed.

The utility model belongs to the field of splicing structures, particularly relates to a splicing structure of a steel bar truss plate and an aluminum mold, and aims to solve the problems that a supporting point of the existing aluminum mold is relatively fixed, the aluminum mold is difficult to adjust according to a position needing to be supported, a supporting rod needs to be supported by a hand independently during adjustment, then a plug pin is inserted into a pin hole, and the adjustment is not convenient enough. According to the scheme, the aluminum formwork comprises a steel bar truss plate and an aluminum formwork body, the aluminum formwork body is located below the steel bar truss plate for supporting, a sleeve is arranged at the bottom of the steel bar truss plate, a supporting column is slidably connected into the sleeve, a clamping frame is arranged between the aluminum formwork body and the supporting column, and a cross groove is formed in the bottom of the clamping frame; according to the formwork splicing structure, the whole splicing structure is compact in design, all parts are tightly matched, the formwork is easy and fast to disassemble and assemble, flexible adjustment can be conducted according to different construction requirements, and adaptability and practicability of the formwork splicing structure are enhanced.

The utility model discloses a cross-shaped self-tapping screw with an anti-skidding tooth structure, which comprises a screw cap, a screw body is arranged on the bottom wall of the screw cap, the screw body and the screw cap are integrally formed, anti-skidding tooth threads are arranged on the screw body, a cross-shaped groove is arranged on the top wall of the screw cap, a locking mechanism is arranged on the screw cap, and the anti-skidding tooth threads are arranged in the cross-shaped groove. The locking mechanism comprises a locking gasket, the locking gasket is arranged on the screw body in a sleeving mode through a formed through hole, a plurality of pointed cones are fixedly welded to the side wall, away from the nut, of the locking gasket, a fixing ring is arranged on the side, away from the nut, of the locking gasket, and the fixing ring is fixedly welded to the screw body. According to the self-tapping screw, the contact friction force between the locking gasket arranged on the self-tapping screw and a connecting piece can be improved through the multiple pointed cones, the locking gasket cannot rotate, then the nut cannot rotate reversely, and the problem that the self-tapping screw is prone to reversely rotating out of a workpiece due to shaking generated by the outside world, and consequently looseness is caused is solved.

The application discloses a bending forming device and a method thereof, the device comprising: a base, a back net positioning and clamping mechanism, at least two transverse support steel wire clamping mechanisms and a transverse support steel wire extension section bending mechanism; the method is suitable for the bending forming device, and a stepped height design is adopted to make the back net present an actual assembly inclined posture, so that precise alignment of the bending station is guaranteed. The back net is positioned through flexible compression at multiple points, and the arc-shaped groove cooperates with the parallelogram link and the inclined surface support to prevent scratch and stabilize the position. The steel wire is rigidly limited through the cross groove and the locking push column, so that the movement and swing during bending are eliminated. The bending mechanism controls the angle through motor gear transmission and mechanical limiting, and the arc-shaped bending block and the guide block avoid stress damage of the steel wire. Various bending structures can be formed flexibly by adjusting parameters, different assembly requirements are adapted, and the precision and adaptability are far higher than those of the traditional mode.

This application relates to an odd-even mixed-layer winding structure, a stator assembly, and a motor device. The stator assembly has 2p poles, and the stator core has Z stator slots, where Z = 12p. Each pair of stator slots forms a group. Within the same group, the stator slot on the left side has slot layers 1, 2, ..., m sequentially, and the stator slot on the right side has slot layers 1, 2, ..., (m+1) sequentially. Each winding branch includes several hairpin coils. The hairpin coils have m / 2+1 cross-layer configurations: crossing slot layers 1 and 2, slot layers 3 and 4, ..., slot layers (m-1) and m, and slot layers (m+1) and (m+1) respectively. This application can effectively avoid generating large stator-side magnetomotive force harmonics during motor device operation, thereby reducing the proportion of back EMF harmonics and preventing the performance of the motor device from being affected.

The utility model discloses a calcining powder block breaking device and processing equipment, the calcining powder block breaking device is arranged above a conveying line body used for conveying saggars, and the calcining powder block breaking device comprises a driving mechanism; the slotting tool fixing plate is connected with the driving mechanism and is driven by the driving mechanism to do lifting motion; the cross-shaped slotting tool is fixedly mounted on the slotting tool fixing plate, and a tool bit of the cross-shaped slotting tool is downwards opposite to the saggar flowing through the conveying line body; the first air vibration device is installed on the slotting tool fixing plate, the first air vibration device and the cross slotting tool ascend and descend synchronously, and the slotting tool fixing plate forms a vibration transmission path from the first air vibration device to the cross slotting tool. According to the calcined powder block crushing device, through integration of the cross slotting tool and the first air vibration device, efficient and uniform crushing of calcined block materials is achieved, the problem that the materials adhere to the tool and the inner wall of a sagger is effectively solved, and therefore production continuity and stability are guaranteed, and the overall efficiency of the powder post-treatment procedure is improved.

The utility model discloses a metal surface burr treatment device, which belongs to the technical field of metal surface processing, and comprises a groove frame, a conveying mechanism body is fixedly connected in the groove frame, a shell is fixedly connected to the top of the groove frame, through grooves are formed in two sides of the shell, two fixing blocks are fixedly connected to two sides of the groove frame, and the fixing blocks are fixedly connected to the two sides of the groove frame. Every two fixing blocks form one set, and electric push rods are arranged on the two sets of fixing blocks in a penetrating mode. Through the combined action of a conveying mechanism body, a limiting cylinder, a driving motor and a grinding roller, the effect of overall grinding and deburring of the surface of a metal plate can be completed in the metal plate conveying process, the metal plate burr treatment efficiency is improved, through the combined action of a first movable plate, a second movable plate, a stud, a cross-shaped groove hole and a cross-shaped inserting block, the metal plate can be conveniently conveyed, and the metal plate burr treatment efficiency is improved. And the grinding roller is fixed in a clamping and clamping mode, so that the fixing structure is simple, and the grinding roller is convenient to disassemble and replace.

The utility model belongs to the field of aviation repair, and particularly relates to a dismounting sleeve matched with a cross recess nut, the dismounting sleeve is used for dismounting the cross recess nut, and square teeth and a first counter bore are arranged on the dismounting sleeve; the square teeth are used for being matched with square grooves in the cross-recessed nut, then the dismounting sleeve is rotated, and dismounting of the cross-recessed nut is achieved. Compared with the prior art, the cross recess nut can be quickly disassembled and assembled without damaging devices near the cross recess nut, such as a fuse seat.

The utility model relates to the technical field of positioning devices, in particular to a grabbing positioner of a mechanical arm, which comprises a mechanical arm positioning pin, a clamp positioning pin, a plurality of datum plates mounted on the clamp positioning pin and a plurality of laser mounting plates mounted on the mechanical arm positioning pin, and the datum plates and the laser mounting plates can be overlapped for use; two mutually symmetrical cross-shaped positioning parts are arranged on the reference plate, each cross-shaped positioning part comprises a light-transmitting hole I located in the center of the reference plate and a cross-shaped groove formed in the surface of the reference plate by taking the light-transmitting hole as the axis, and the cross-shaped groove is internally coated with pigment different from the reference plate and the laser mounting plate; a laser generator and an electronic gyroscope are mounted on the laser mounting plate at the same time; according to the scheme, the laser is projected to the cross groove to confirm the overlap ratio, and the perpendicularity is finely adjusted in cooperation with real-time data of the electronic gyroscope, so that the problem that adjustment of the point position of the mechanical arm excessively depends on professional quality of operators can be solved, and the working efficiency of a production site can be guaranteed.

The utility model discloses a cross countersunk head self-drilling and self-tapping screw, which relates to the technical field of fasteners and comprises a screw main body, a screw head is mounted at the top end of the screw main body, a cross groove is formed in the top end of the screw head, a connecting groove is formed in the top end of the screw main body, and a connecting column is fixedly connected to the bottom end of the screw head. The connecting column is arranged in the connecting groove, the cross section of the connecting column is in a regular polygon shape, a plurality of arc-shaped elastic pieces are evenly arranged in the connecting groove along the circumference, and the ends of the arc-shaped elastic pieces abut against the side face of the connecting column. The arc-shaped elastic piece deforms, so that the connecting column crosses the arc-shaped elastic piece, the slipping phenomenon occurs, and the phenomenon that the screw slips due to overlarge output force is avoided.

The utility model relates to the technical field of oil cylinder disassembling tools, and discloses an oil cylinder disassembling tool which comprises a sleeving barrel, a rotating disc and a plurality of fastening blocks, a plurality of cross-shaped grooves are formed in the edge of the upper surface of the sleeving barrel, the rotating disc is arranged outside the sleeving barrel in a sleeving mode, a plurality of cross-shaped blocks are fixedly connected to the edge of the inner wall of the rotating disc, and a plurality of fastening blocks are fixedly connected to the edge of the inner wall of the rotating disc. The lower surfaces of the cross blocks are tightly attached to the inner bottom face of the cross groove, a sleeving groove is formed in the middle of the lower surface of the sleeving cylinder, a plurality of positioning rods are fixedly connected to the edge of the inner top face of the sleeving groove, and the outer walls of the sides, close to the center of the sleeving cylinder, of the fastening blocks are tightly attached to the outer wall of the sleeving cylinder. According to the oil cylinder disassembling tool, the rotating disc is ingeniously matched with the sleeving barrel, and the fastening block and the connecting rod are stably fixed, so that the oil cylinder disassembling tool realizes a rapid and stable disassembling process, and the working efficiency is improved.

The utility model provides a micro fastener based on cross groove, and relates to mechanical fastener technical field, including adjusting cover, depth adjusting cover and cross movable part. Adjusting cover bottom fixed connection fastening screw rod, the cross movable part with spacing groove is equipped in the depth adjusting cover, and the movable cover is equipped in the adjusting cover, the depth adjusting cover bottom symmetry is equipped with two groups of clamping position subassembly, each contains slidable inclined head stopper rod, adjusting cover inner wall is equipped with multiple sets of triangular limit block and two groups of top block. Through the cross movable part (pressure is between reset spring one and elastic piece elasticity) of pressing down, the depth adjusting cover is pushed and moves down, makes the inclined head stopper rod to lock the gear after the compression reset spring no. 2 crosses the triangular limit block, realizes the cross movable part depth multistage regulation. Cross movable part obtains the depth adjusting cover bottom support and elastic piece radial constraint in this state, significantly enhances and the engagement depth, stability and antiskid ability of screwdriver head, solves the problem that the tool slips, drops out when operating in the narrow space.

The utility model provides a special clamp for disc parts, which relates to the technical field of clamps and comprises a support and a support plate, a plurality of hydraulic lifting rods are arranged between the support and the support plate, and the distance between the support plate and the support is changed through the hydraulic lifting rods. A cross-shaped groove is formed in the supporting plate and provided with four channels, the ends of the channels extend to the edge of the supporting plate, clamping blocks are arranged in the channels respectively, a check block is arranged on the side, facing the center of the cross-shaped groove, of the top end of each clamping block so that a workpiece can be clamped in a space formed by the clamping blocks, the check blocks and the supporting plate, and the bottom end of each clamping block is connected with a lead screw. The lead screws are arranged along the channels so that the clamping blocks can be driven by the lead screws to move along the channels, the four clamping blocks used for clamping workpieces are driven by the same driving bevel gear, and the workpieces can be conveniently positioned; the requirements for disc type workpieces with different heights and diameters can be met, and the application range is wide; and the peripheral side of the disc type workpiece can be clamped through the check blocks, and the device is suitable for various machining schemes.

The utility model relates to the technical field of numerical control machine tools, in particular to a numerical control machine tool with a tool bit convenient to replace, which comprises the tool bit, a cross frame is fixedly mounted at the top of the tool bit, a cross box is inserted into the top of the cross frame, and a notch cylinder is mounted in the middle of the top of a box cover. The top of the notched cylinder is connected with the bottom of a driving shaft of the numerical control machine tool, a screw rod is rotatably mounted on the inner wall of the bottom of the cross box, a screw block is slidably mounted on the outer side wall of the screw rod through threads, and the periphery of the screw block is hinged to the top of the connecting rod. The cross-shaped frame is installed on the top of the tool bit, after the cross-shaped frame and the cross-shaped groove are connected in an inserted mode, the inserting plate and the inserting groove are automatically aligned, adjustment is not needed, the screw rod can be directly rotated, the screw block is made to descend, the connecting rod drives the inserting plate to stretch out, the inserting plate is inserted into the through groove, the cross-shaped frame and the cross-shaped box can be fixed, and installation of the tool bit can be completed. Only the screw needs to be rotated, so that the disassembly is quicker.

The utility model relates to the technical field of water pump shafts, and particularly discloses a water pump shaft with a connecting mechanism, which comprises a water pump, the connecting assembly is arranged on the surface of the water pump shaft, an embedded connection mode is adopted in the connecting assembly, the situation that when the water pump shaft rotates, torque force is too large, and consequently bolts and nuts are loosened or broken can be prevented, the connecting assembly comprises a first flange plate, and a first threaded hole is formed in the surface of the first flange plate; a rubber pad is slidably connected to the surface of the first flange plate, a second threaded hole is formed in the surface of the rubber pad, a plurality of first trapezoidal blocks are fixedly connected to the surface of the water pump shaft, a first trapezoidal groove is formed between every two adjacent trapezoidal blocks, a cross-shaped groove is formed in the surface of the water pump shaft, and the four ends of the cross-shaped groove are in an arc shape. The embedded connecting assembly can effectively resist torque force and prevent the axis of the water pump shaft from deflecting, so that normal operation of the water pump is ensured.

The invention relates to the technical field of air pollution control, in particular to an air pollution control purification tower which comprises a tower body, the top of the tower body is fixedly connected with a tower cover in a screwed mode, the center of the bottom of an inner cavity of the tower body is fixedly connected with a liquid transfer assembly, the top of the liquid transfer assembly is fixedly connected with a clamping plate, and the top of the clamping plate is connected with a filter cartridge in a buckled mode. Through the arrangement of a cross groove, when a first threaded rod drives a cross plate to rotate, a second threaded rod can be made to rotate, then a moving disc can drive a plug plate to move, and through the movement of the plug plate, in the waste gas purification process of the equipment, a liquid discharging groove can be sealed; furthermore, part of purified waste gas is prevented from entering the interior of the conical plate, the gas discharge amount is guaranteed, in the process that the washing plate performs spray washing and impurity removal on the filter cartridge, the liquid discharge groove is communicated with the interior of the conical plate, and then liquid and impurities can be discharged into the conical plate through the liquid discharge groove.

The utility model discloses a cross recess cylindrical head step screw, which relates to the technical field of screws and comprises a screw body and a lubricating mechanism arranged in the screw body. The lubricating mechanism comprises oil absorption cotton which is arranged in the screw body and used for absorbing excessive lubricating oil, and an oil channel which is formed in the screw body and used for feeding the lubricating oil into a thread of the screw body for lubrication when the oil absorption cotton discharges oil; excessive lubricating oil added at a time can be absorbed and temporarily stored through the oil absorption cotton, oil leakage caused by excessive oil adding is avoided, resource waste is reduced, when lubrication is needed, the movable rod can be pulled towards the outer side of the screw body, the pressing plate is used for extruding the oil absorption cotton to discharge oil, and the service life of the screw is prolonged. The discharged lubricating oil can flow into the thread of the screw body through the oil duct to lubricate the screw, so that the screw is not easy to rust and block and is difficult to disassemble, a worker can finish the lubricating process of the screw by regularly pulling the movable rod outwards, oil does not need to be added into the screw every time the screw is lubricated, and convenience and rapidness are achieved.