30results about How to "Strong locking force" patented technology

The invention discloses a drive axle self-locking differential, belonging to the technical field of mechanical transmission. The drive axle self-locking differential comprises a differential housing and a transmission gear, wherein a left half shaft gear, a right half shaft gear and a planetary gear are arranged in the differential housing, and the transmission gear is connected with an input gear shaft in a transmitting manner; a locking activity set is arranged on the right side of the right half shaft gear, and a thrust structure used for controlling the axial movement of the locking activity set is connected to the locking activity set; the thrust structure comprises a shifting fork and a linear actuator capable of realizing self-locking after power failure, and the shifting fork comprises a shifting fork shaft and a shifting fork body; two shifting fork arms of the shifting fork body are connected to the locking activity set, and the shifting fork is connected to the push rod of the linear actuator; the middle of the shifting fork is hinged to the shifting fork shaft, and a torsional spring is arranged at the hinging position; the shifting fork arms can shift the locking activity set to move left under the action force of the torsional spring, and the linear actuator can overcome the action force of the torsional spring to enable the shifting fork arms to shift the locking activity set to move right. The drive axle self-locking differential has the advantages of being low in power consumption, good in self-locking effect and long in service life.

The invention discloses a telescopic device which comprises an outer tube, an inner tube and a connecting sleeve, wherein the upper end of the inner tube extends into the outer tube; the upper part of the connecting sleeve is fixedly connected with the lower end of the outer tube; a locking sleeve which sleeves on the inner tube is installed in the lower part of the connecting sleeve; an opening in an axial direction is formed in the locking sleeve; a conical part is arranged on the outer wall of the locking sleeve; and a rotation stopping structure is arranged between the inner tube and the locking sleeve. According to the telescopic device, when the inner tube rotates, threads between the connecting sleeve and the locking sleeve make the locking sleeve move in the axial direction, the inner wall of the connecting sleeve extrudes the conical part of the locking sleeve to make the locking sleeve shrink towards the axis and lock the inner tube, and locking or unlocking can be realized by rotating the inner tube; the telescopic device between the outer tube and the inner tube is arranged at the lower end of the outer tube, and a longer interval section does not exist between the lower end of the outer tube and the inner tube, so that shaking cannot occur between the outer tube and the inner tube after locking is finished; and the locking force of a leg tube is strong, the stability is high, the operation is simple and rapid, and the stability of a product can be effectively improved.

The invention discloses a simple numerically-controlled machine tool for machining blind holes. The simple numerically-controlled machine tool comprises a machine tool electrical cabinet, a machine tool spindle box, a numerical control panel, a cutting fluid box body, a hydraulic oil tank and a workbench. The machine tool spindle box is arranged at the front end of the machine tool electrical cabinet. The workbench is arranged below the machine tool spindle box. The cutting fluid box body is arranged below the workbench. The hydraulic oil tank is arranged on one side of the machine tool electrical cabinet and connected with the machine tool electrical cabinet through a hydraulic oil tube. Supporting tables are arranged on the two sides of the workbench. Delivery rollers are arranged at the upper ends of the supporting tables. Air pressure supports are arranged at the lower ends of the supporting tables. An index chuck is arranged on one side of each supporting table. According to the simple numerically-controlled machine tool for machining the blind holes, machining can be conducted as long as the height of the machine tool is adjusted simply and simple setting is conducted, a lot of time for adjustment and programming of the machine tool is saved, and the machining of perforating guns with few holes in a small batch is more convenient; moreover, the simple numerically-controlled machine tool is simple in structure and lowers production cost.

The invention discloses a camera with a stable bracket. The camera comprises a machine body, a sun shade, a camera stand and a support base; a video mechanism is mounted on the side, far from a lens,of the machine body; a camera mechanism is fixedly mounted on the upper side of the machine body; locking rods are in through connection to the two sides of the camera stand; guide grooves are formedin the two sides of the support base; a support frame and an extension rod are fixed by pressing head connecting bolts, so that the surface of the camera stand is conveniently hoisted at any time; meanwhile, a pressing head is convenient to use, saves the time, and is high in locking strength; as the camera stand and the support base are fixedly connected through a locking head, the angle of the camera stand is conveniently adjusted; the sliding of the camera stand and the support base caused by insufficient locking strength is prevented through fixation by the locking head; and a chute is provided to maintain coaxial activity state of the extension rod and the support frame in relative displacement, so that the overall use effect is better than that in a traditional mode.

The invention discloses an alternating current electric car charging connecting device. A hard silica gel dustproof cover is arranged at the tail end of a charging gun head; the charging gun head anda gun body are connected with a fastening screw at the bottom of the gun head and a fastening screw at the front end of the gun head; gun head waterproof silica gel is arranged between the charging gun head and the gun body; a plurality of terminals are installed on a terminal support, and the terminal support is installed inside the charging gun head through a terminal support fastening screw; anO-shaped ring is arranged among the gun head and the multiple terminals; a mechanical lock is connected with the gun body through a mechanical lock plug; a charging gun spring is arranged on the gunbody, and the charging gun spring is located below the head end of the mechanical lock; a PCB assembly is arranged below the front part of the mechanical lock of the gun body, and the PCB assembly isfastened to the gun body of the PCB screw; a gun body upper cover for protecting the mechanical lock is arranged on the gun body; outgoing line waterproof silica gel is arranged at the head end of thegun body; the outgoing line waterproof silica gel is fastened at the head end of the gun body through a lock line buckle. The protective performance of the device is improved, the size of the deviceis reduced, and the device is convenient to carry.

A stopping zipper puller comprises a puller slide block and a pull sheet body, wherein the puller slide block comprises a lower wing plate, a connection column and an upper wing plate; the lower wing plate, the connection column and the lower wing plate form a slideway; one end of the pull sheet body is connected to the upper wing plate; the stopping zipper puller also comprises a retainer; the retainer comprises a head part and a stopping part; the other end of the pull sheet body is connected to the head part; a through hole is arranged in the upper wing plate far away from the connection column; and the retainer is detachably arranged in the through hole, and the stopping part of the retainer extends into the slideway. The stopping zipper puller disclosed by the invention has the advantages that the lock is firm.

The invention discloses an electronic control multi-plate-type self-locking drive axle. The electronic control multi-plate-type self-locking drive axle comprises a drive axle box with a first differential shell body and a drive axle box cover. The first differential shell body is internally provided with a left half axle gear, a right half axle gear, a planet gear and a transmitting gear. The drive axle box is internally provided with an input gear meshed with the transmitting gear. The right half axle gear is provided with a second differential shell body rotationally connected with the drive axle box cover and provided with a differential shell cover in a sealed manner. A work friction set is arranged between the right half axle gear and the second differential shell body, and a plane spherical-surface cam set abuts against the right end of the work friction set. A control friction set is arranged between the plane spherical-surface cam set and the second differential shell body. A pushing disc with a plurality of pushing rods and reset springs abuts against the right end of the differential shell cover, the pushing rods leftwards penetrate the differential shell cover and to be matched with the control friction set in an abutting manner, and the reset springs are arranged between the differential shell cover and the pushing disc. A plane cam set abuts against the right end of the pushing disc, and a driving mechanism for allowing the plane cam set to rotate in the circumferential direction is arranged at the outer end of the plane cam set. By means of the electronic control multi-plate-type self-locking drive axle of the structure, the sliding limiting effect is good, and the defect that locking can not be achieved easily during high-speed slipping is overcome.

The invention provides an all-terrain non-falling ladder. The all-terrain non-falling ladder comprises two ladder units, wherein the two ladder units are a first ladder unit and a second ladder unit which are hinged to each other through first hinge shafts respectively; the first ladder unit comprises a first vertical side and a second vertical side; the first vertical side comprises a first main ladder column hinged to the first hinge shaft, a first telescopic ladder column arranged below the first main ladder column and capable of sliding relative to the first main ladder column, and a first locking device; the first main ladder column is connected with the first telescopic ladder column through the first locking device in a clamping manner; the first locking device comprises a convex first positioning part; a first rack or a plurality of first grids in stripped arrangement which are connected with the first positioning part in a clamping manner are arranged on the first main ladder column or the first telescopic ladder column. In an uneven workplace, the all-terrain non-falling ladder can be stably supported on an uneven working surface through stretch and retraction, so that the safety coefficient is increased.

The invention discloses a simple type password lock for a suitcase. The simple type password lock comprises central control locks and first edge locks, wherein each of the central control locks comprises a surface shell, a pushing part, a rotating part and a control mechanism, wherein the two sides of the upper end of each of the surface shells are respectively hinged together to an upper shell ofthe suitcase through pin shafts; a stop part is arranged on the inner side of each of the surface shells; a groove is formed in one side, towards an opening-closing side, of each of the pushing parts; a lower shell of the suitcase is provided with hook parts, which are buckled with the grooves, in an extending manner towards the grooves; the rotating parts are rotatably connected with the first edge locks through connecting ropes; the rotating parts are provided with stop blocks connected with the stop parts in a clamping manner corresponding to the stop parts; structures buckled with the suitcase are arranged on the side edges and the opening-closing side of the password lock of the suitcase, so that locking force of the password lock of the suitcase and the suitcase is high, and the password lock of the suitcase is difficultly unlocked; and moreover, the structure of the password lock of the suitcase is simple, a transmission way is simple, and the operation is easy.

The invention discloses a self-locking compression type portable grounding wire capable of being assembled and disassembled quickly, which comprises an upper clamping plate, a lower clamping plate, avertical clamping plate, a movable clamping plate, a supporting rod, a fixed clamping piece, a movable clamping piece, a round rod and an insulating rod, and is characterized in that one end of the upper clamping plate is connected with the upper end of the vertical clamping plate, one end of the lower clamping plate is connected with the lower end of the vertical clamping plate, one end of the supporting rod is connected with one end of the insulating rod, a first round hole is formed in the lower clamping plate, the other end of the supporting rod penetrates through the first round hole andextends out of the first round hole, the movable clamping plate is arranged at the end, which extends out of the first round hole, of the supporting rod, a wedge-shaped groove is formed in the supporting rod, a cavity is formed in the lower clamping plate, the fixed clamping piece is arranged on the side, which is close to the vertical clamping plate, in the cavity, the movable clamping piece is arranged on the side, which is away from the vertical clamping plate, in the cavity, a spring is arranged at the end, which is away from the vertical clamping plate, of the movable clamping piece, theother end of the spring is connected with the lower clamping plate, a clamping plate is arranged at the end, which is close to the vertical clamping plate, of the movable clamping piece and matched with the wedge-shaped groove.

A pressure cooker comprises a surface cover and an upper cover which are assembled into a cooker cover, an assembly gap between the surface cover and the upper cover forms an installation space, the upper cover is provided with an exhaust port, a float valve matched with the pressure cooker is arranged in the exhaust port, a float valve pressure limiting rod and a guide check block triggering thefloat valve pressure limiting rod to move are arranged in the installation space, the guide check block and the float valve pressure limiting rod are movably arranged in the installation space, one end of the float valve pressure limiting rod is located on one side of the exhaust port, the surface cover or the upper cover is provided with a key, and the key is connected with the guide check blockin a matched mode. The key is pressed to drive the guide stop block to move upwards, the guide stop block drives the float valve pressure limiting rod to move towards the exhaust port, and the float valve pressure limiting rod partially shields the exhaust port so as to limit the float valve from floating towards the exhaust port; the pressure in the pressure cooker is large, the float valve floats upwards towards the exhaust port, the float valve pressure limiting rod is prevented from moving towards the exhaust port, the key cannot be pressed, the problem that the cover cannot be opened at will when air pressure exists in the cooker is solved, and the pressure cooker has the advantages of being safe and reliable.

The invention discloses an antiskid assembly tire for a motor vehicle. The tire is characterized in that: a synchronous locking device comprises a transmission shaft, a cover plate, a back plate of which the center is provided with a bearing, and stay cords of which one ends are provided with hooks; the edge of the back plate is provided with wire outlets corresponding to outside tire sidewall rubber; the cover plate is fixedly connected with the back plate; one end of the transmission shaft is assembled with the bearing, and the other end of the transmission shaft is an adjusting end which is exposed out of a central through hole of the cover plate and is fixedly connected with a gear; the gear is matched with a limit pin arranged on the cover plate; the transmission shaft is provided with clamping grooves corresponding to the outside tire sidewall rubber; the fixed ends of the stay cords are fixed in the clamping grooves, and the hook ends of the stay cords pass through the wire outlets; and damping interlayers are arranged in interfaces of the outside tire sidewall rubber. The synchronous locking device of the assembly tire is easy and convenient to adjust, large in locking force, uniform in tightness in all directions and convenient to operate; and in the running process of the motor vehicle, vibration caused by different elasticity of tread rubber on metals and rubber at interface joints is eliminated, and the safety is high.

The invention discloses a shape memory alloy eccentric locking device. The shape memory alloy eccentric locking device comprises a bolt, a connecting piece and a connected piece, wherein the bolt sequentially penetrates through the through holes of the connected piece and the connecting piece and is connected with a locking mechanism. The invention also discloses a mounting method of the shape memory alloy eccentric locking device, the method comprises the following steps that 1, a memory alloy fastening ring is placed in a dry ice industrial alcohol solution to be cooled to a martensite state; 2, a slotted nut is subjected to cold spraying for 20s-30 s through liquid nitrogen; 3, a locking pad, the slotted nut and the memory alloy fastening ring are sequentially mounted on the bolt; and 4, the memory alloy fastening ring is heated. The shape memory alloy eccentric locking device and the mounting method thereof can effectively solve the problems that an existing nut locking means is poor in anti-vibration property in a high-frequency vibration environment, the anti-loosening requirement is difficult to meet, the part of anti-loosening methods can only be used for one time and the shape memory alloy eccentric locking device are difficult or cannot be disassembled, and much inconvenience is brought to maintenance and repair of the connected piece.

The invention discloses a rapid mold locking device. The rapid mold locking device is used for installing a mold on a machine tool, and comprises a lifting assembly and mold locking assemblies, wherein the lifting assembly is arranged on the machine tool, the lifting assembly comprises mold lifters, and the mold lifters can move relative to the machine tool in the height direction; the mold locking assemblies are arranged on the machine tool, and comprise lock sleeves and lock pins, and the lock sleeves can move relative to the machine tool in the height direction; and the lock pins are provided with first connecting sections and second connecting sections, the first connecting sections penetrate through the machine tool, and are slidingly connected with the lock sleeves, the second connecting sections abut against the machine tool, and the lock pins are rotated so that sliding of the lock pins relative to the lock sleeves can be locked or released. According to the rapid mold locking device, the lock pins are rotated so that the first connecting sections can abut against the lock sleeves, and the lock sleeves and the lock pins can be locked or tightened through movement of the lock sleeves in the height direction; and operation is convenient, mold replacement is more convenient, and the locking force is higher.

The present invention relates to a folder for file, letter head pliers, etc., which can prevent accidental movement of a clamp in a clamping state in a releasing direction. A lining plate (120) is adhibited with a plurality of reinforcing sheets on one edge therefore the lining plate is hard to bend compared with other parts. Furthermore one edge of each reinforcing sheet, which is opposite with other reinforcing sheet, and one edge of another reinforcing sheet, which is opposite with the former edge, are used as guiding parts. The clamp (200) is used for clamping the lining plate (120) and has an approximately U-shaped section. Furthermore the lining plate (120) is sandwiched in the approximate U-shaped section. At positions which are opposite with the guiding part, the projections with widths which are approximately same with that of the guiding part are set in a direction from one side of the U-shaped section to the other side. Each projection is respectively inserted in a corresponding guiding part.

The invention discloses a cantilever connecting structure for a roots pump or a screw pump. The cantilever connecting structure comprises an outer shell, a bearing end cover, a driving shaft rotor and a cantilever rotor, wherein the driving shaft rotor is connected with a driving positioning sleeve, and a circular boss is arranged on the driving positioning sleeve; the cantilever rotor comprises a linear rotor, a transition cylinder and a cantilever rotor positioning ring; the cantilever rotor positioning ring is fixedly connected with the driving positioning sleeve; and the cantilever rotor is sleeved with the outer shell, the bearing end cover is arranged at the outer side of the driving shaft rotor, a first step is arranged in the bearing end cover, a second step is arranged on the outer surface of the driving shaft rotor, a bearing cavity is formed between the first step and the second step, and a bearing is installed in the bearing cavity. The cantilever connecting structure overcomes the defects in the prior art, the cantilever rotor positioning ring is matched with the driving positioning sleeve, the driving positioning sleeve is matched with the driving shaft rotor, the rigidity of the cantilever rotor can be ensured, the overall performance of the cantilever rotor can be kept, the machining requirement of the cantilever rotor is greatly lowered, and embedded matching of an extended shaft and the rotor is not needed any more.

The invention discloses a motor elastic coupling which comprises a coupling body, the coupling body comprises two connecting rings and a buffer ring, the outer walls of the two sides of the buffer ring are welded to the two connecting rings respectively, a fixing mechanism is arranged in the buffer ring, and the fixing mechanism comprises a fixing plate and a supporting plate. A first spring is fixedly connected between the fixing plate and the supporting plate, the fixing plate is connected with the inner wall of the buffering ring through a bolt, a locking mechanism is arranged between the supporting plate and the fixing plate, and the locking mechanism comprises a connecting rod, a connecting frame and a clamping plate. The device can effectively prevent the coupler from swinging or even falling off when the motor runs at a high speed, so that an external transmission rod is damaged, a buffer mechanism can be conveniently limited, the position deviation of the buffer mechanism caused by vibration is prevented, and the damage to the external transmission rod caused by the deviation of the coupler during buffering and damping is prevented. Therefore, the connection of the transmission rod is influenced.

The invention relates to an anti-theft cover for a large tank. The anti-theft cover for the large tank comprises a cover plate installed at a tank opening of the large tank in a hinged mode and a locking mechanism installed on the side face, facing the interior of the large tank, of the cover plate; a blocking part is arranged on the side wall, close to the tank opening, of the large tank, and the working face of the blocking part faces the interior of the large tank; the locking mechanism comprises a first mounting seat, a second mounting seat, a control rod hinged to the first mounting seat and a telescopic unit hinged to the second mounting seat, wherein the first mounting seat and the second mounting seat are arranged on the cover plate; the control rod is provided with a locking end capable of abutting against the working face of the blocking part, and the control rod is hinged to the telescopic unit; and the telescopic unit has an extending state and a shortening state, and the locking mechanism has a locking state and an unlocking state. The anti-theft cover adopts a structure of a mechanical lock in the cover plate, realizes a built-in lock, is large in locking force, suitable for the large tank, stable in overall structure, low in cost and good in anti-theft effect, and can be directly modified and mounted on the existing large tank.