129results about How to "Realize deadlock" patented technology

The invention provides a four-freedom-degree spherical module unit, and relates to a modular robot module unit. The four-freedom-degree spherical module unit aims to solve the problems that an existing robot module unit has fewer degrees of freedom, poor flexibility and a low space utilization rate. The four-freedom-degree spherical module unit comprises a spherical shell, a regular tetrahedron assembly and four sets of connecting assemblies, wherein the regular tetrahedron assembly comprises a regular tetrahedron support and four drive motors; each connecting assembly comprises a transmission mechanism, an outer shell and two lifting mechanisms; the regular tetrahedron support and the four connecting assemblies are disposed in the spherical shell, each drive motor is installed in a mounting base of the regular tetrahedron support, and an output shaft of each drive motor is provided with one outer shell; two driving guide rail holes and two driven guide rail holes are formed in each outer shell; each transmission mechanism is mounted on the inner side face of the corresponding outer shell and connected with the two lifting mechanisms, the driving guide rail holes are used for the lifting mechanisms of the module unit to stretch out, and the driven guide rail holes are used for receiving the lifting mechanisms of the butted module unit. The four-freedom-degree spherical module unit is used for a modular robot.

The invention discloses a height-adjustable backrest chair. The height-adjustable backrest chair comprises chair seat and a backrest, wherein a vertical lifting column is fixedly connected onto the bottom surface of the chair seat; a pair of vertical rack parts is formed at two ends of the bottom surface of the lifting column; a vertical groove is formed in one side wall of each rack part, racks are embedded in the groove and meshed with a vertical gear, the middle of the gear is inserted in a spline shaft, two ends of the spline shaft are hinged in a limit frame, a limit clamping strip is formed at the upper end of the limit frame, a notch is formed in one side of the limit clamping strip, and the gear is inserted in the notch; a control box is fixed on the outer wall of a tube body, a circuit control panel is arranged in the control box, and a camera and a sensor are fixed on the control box. The height of the height-adjustable backrest chair can be adjusted intelligently according to the height of a user, so that users with different heights sit conveniently, and the backrest chair is convenient to adjust, time-saving and labor-saving.

The invention belongs to the technical field of connection pieces and particularly provides an expansion bolt convenient to disassemble. The expansion bolt convenient to disassemble comprises a firstscrew cap, a first threaded rod and a first nut. The first threaded rod is fixedly installed on the bottom surface of the first screw cap and coaxial with the first screw cap. The first threaded rod is sleeved with the first nut. The bottom surface, far away from the first screw cap, of the first threaded rod is provided with a first through hole extending to the bottom surface of the first screwcap. The upper surface of the first screw cap is provided with second through holes communicating with the first through hole. A locking piece is fixedly installed on the upper surface of the first screw cap. The other end of each steel wire rope penetrates through an installation plate, the first through hole and the corresponding second through hole to be connected with the locking piece. The steel wire ropes are used for tensioning friction blocks to enable the elastic pieces to be compressed and deformed. According to the expansion bolt convenient to disassemble, through the arrangement ofthe friction blocks and the elastic pieces, the first nut is squeezed, so that locking of the bolt is achieved; a first screw is arranged to drive the steel wire ropes to move in the vertical direction so as to enable the bolt to be convenient to disassemble; and the use efficiency of the expansion bolt convenient to disassemble is improved.

The invention relates to the technical field of petroleum drilling and production equipment, and provides a self-locking casing head. The self-locking casing head comprises a casing head body, wherein the casing head body is provided with a mounting hole; a hanger is arranged in the mounting hole; a sealing assembly is arranged between the hanger and the mounting hole; the casing head body is further provided with a mounting groove; the mounting groove communicates with the mounting hole; a plurality of clamping pieces are uniformly distributed at intervals in the circumferential direction of the mounting hole; the clamping pieces are provided with inverted teeth; the end of the hanger is provided with positive teeth; the inverted teeth are matched with the positive teeth; the clamping pieces are provided with vertical long-strip holes; a rotating shaft penetrates through the long-strip holes; reset elastic pieces are arranged on the clamping pieces; the upper ends of the clamping pieces are connected with the mounting groove through the reset elastic pieces; the lower ends of the clamping pieces abut against the inner wall of the bottom surface of the mounting groove; the bottom surface of a locking piece mounting groove is provided with a locking hole; a locking piece is arranged in the locking hole in a sliding mode in the vertical direction; and the clamping piece is jacked up after sliding. According to the technical scheme, the problem that an oil pipe is prone to loosening in the prior art is solved.

The invention discloses a vehicle-umbrella separating mechanism for initiating explosive release. The mechanism is mainly applied to vehicle-umbrella separating in the recovery process of a fixed-wing unmanned aerial vehicle. A piston in a cavity can be pushed to act through the chemical energy produced by explosion of an initiating explosive device, a limiting aluminum wire is cut off, a steel ball is released, and disengagement and separation of two connectors are achieved. The vehicle-umbrella separating mechanism of the unmanned aerial vehicle has the advantages of being small in size, simple in control mode and high in reliability.

The invention relates to an adaptive stair climbing and cleaning robot, in particular to an adaptive stair and corridor cleaning robot and a stair climbing method thereof. According to the adaptive stair and corridor cleaning robot, the length and the width of a laminating folding mechanism are adjustable by the aid of inclined electric telescopic rods and vertical electric telescopic rods, and accordingly, the adaptive stair climbing and cleaning robot is adaptive to stairs with different heights and different widths and has a wider application range.

The invention belongs to the field of hub brake locks, and particularly relates to a novel intelligent hub brake lock. The novel intelligent hub brake lock comprises a hub brake casing, wherein a mounting position for being mounted on an end cover of a hub is formed on the hub brake casing; a motor accommodating chamber for accommodating a motor is arranged on the hub brake casing; the motor is arranged in the motor accommodating chamber; a lock tongue slideway is also formed on the hub brake casing at one side of the motor; a lock tongue is arranged in the lock tongue slideway; a driving device is arranged between the motor and the lock tongue; a motor control device is also connected to the motor and controls the motor to rotate; the motor rotates to drive the lock tongue to slide in the lock tongue slideway through a driving device and the front end of the lock tongue is enabled to extend into the mounting position or leave from the mounting position. The novel intelligent hub brake lock disclosed by the invention has the advantages of simple structure, convenience in use, safety and reliability; a switch of the hub brake lock can be remotely controlled; and when the connection of a torsional spring is broken off, the lock tongue automatically retracts to prevent the hub brake from being locked.

The invention discloses an anti-loosening sealing cover for a pressure vessel for an aerospace dynamic test, and relates to the technical field of sealing covers. The anti-loosening sealing cover comprises a vessel body, an inner sealing cover and an outer sealing cover; and the bottom of the inner sealing cover is in pressing connection with the top of the vessel body, the top of the periphery ofthe vessel body is fixedly connected with threaded seats, the periphery of the inner sealing cover is fixedly connected with bolt sleeves, and the bolt sleeves and the inner surfaces of the threadedseats are in threaded connection with bolts. According to the anti-loosening sealing cover for the pressure vessel for the aerospace dynamic test, the match among the bolts, the threaded seats and thebolt sleeves is arranged, so that the inner sealing cover can be pressed on the top of the vessel body for primary sealing, then the outer sealing cover is matched with external threaded sleeves foruse, so that a secondary sealing effect can be achieved, and the sealing performance is improved; and through the match between gear rings and gear caps, the outer sealing cover can synchronously drive the four bolts to rotate when being screwed, and the four bolts do not need to be manually tightened one by one, so that a large amount of time is saved, and the use is convenient.

The invention discloses anti-panic rope ascender / descender equipment. The anti-panic rope ascender / descender equipment comprises a body, a movable cam and a releasing and clamping mechanism, wherein a lockhole is formed in one end of the body, one end of the movable cam stretches into the end, deviating from the lockhole, of the body, the end of the body is hinged with the movable cam, and a first rope threading gap is formed between the end of the movable cam and the body; the releasing and clamping mechanism comprises a handle, a first friction element and a second friction element, andthe first friction element and the second friction element are arranged on the handle; one end of the handle is hinged with the end, deviating from the body, of the movable cam; and a second rope threading gap is formed between the first friction element and the second friction element. The anti-panic rope ascender / descender equipment is simple in structure, by arranging the first rope threadinggap, the second rope threading gap and the movable cam, the anti-panic rope ascender / descender equipment is smooth when a rope ascends and is locked automatically within a very short travel when the rope is loaded, and self-locking can be achieved during descending when a user instinctively clenches the handle due to panic caused by rapid falling.

The invention discloses a stepping motor cam friction mechanism. The stepping motor cam friction mechanism comprises a fixing groove and a plurality of friction guide units, wherein each friction guide unit comprises a first polished rod, a second polished rod, a first vertical plate, a second vertical plate, a connecting piece, an adjusting plate, a driving motor, a connecting block and an adjusting wheel; the first polished rod and the second polished rod are horizontally fixed in a fixing groove and are parallel to the width direction of the fixing groove; the first polished rod and the second polished rod penetrate through the first vertical plate and the second vertical plate; the first polished rod and the seconded polish rod are perpendicular to the first vertical plate and the second vertical plate; the connecting piece connects the first vertical plate and the second vertical plate; and the driving motor is fixed in the fixing groove and provided with a driving shaft, one endof the connecting block is connected with the driving shaft, the other end of the connecting block is connected with the adjusting wheel, the adjusting plate is vertically arranged and connected withthe connecting piece, an adjusting hole is formed in the adjusting plate and is in a vertical long-strip shape, and the adjusting wheel is inserted into the adjusting hole. Compared with the prior art, the stepping motor cam friction mechanism has the advantages of high positioning precision, low cost, simple structure and stable operation.

The invention provides a threaded connecting part with a clamping structure. The threaded connecting part comprises a screw rod and a nut. The screw rod is internally provided with a cylindrical cavity coinciding with the screw rod in axis. The first end of the screw rod is provided with a cylindrical hole communicating with a cylindrical cavity and coinciding with the screw rod in axis. The discloses of the cross section of the cylindrical hole is less than that of the cross section of the cylindrical cavity. The second end of the screw rod is fixedly provided with a limiting block. On one hand, the threaded connecting part with the clamping structure, provided by the invention, achieves locking of connection of the nut and the screw rod and prevents the unreliable connection risk causedby the nut reversely rotating to get away from the screw rod; on the other hand, a locking structure is arranged in the screw rod to avoid the adverse influence on the connecting function of the screwrod.

The invention relates to the technical field of casting shakeout, and discloses a casting sand removing line which comprises a hammering mechanism, a sand shaking mechanism and a sand conveying mechanism, the hammering mechanism and the sand shaking mechanism are connected to the ground, and the sand conveying mechanism passes through the lower portion of the hammering mechanism and the lower portion of the sand shaking mechanism. And the shakeout receiving mechanism is used for receiving shakeout from the hammering mechanism and the sand shaking mechanism. According to the sand core removing device, automatic workpiece sand core removing work is achieved, and the working efficiency is improved.

The invention relates to the technical field of the relay, more particularly to an improved moving-reed relay comprising a housing, an electromagnet assembly installed in the housing, a push member installed in the housing, and a contact assembly installed in the housing. The contact assembly consists of a static reed and a moving reed that are installed in the housing; and a static contact and amoving contact are arranged at the static reed and the moving reed respectively. One end of the push member is connected with the moving reed and the other end of the push member is connected with theelectromagnet assembly; and the electromagnet assembly drives the push member to move back and forth to drive the moving reed to move back and forth, so that connection or disconnected of the movingcontact and the static contact is realized by the moving reed moving back and forth. Besides, a sliding cavity for sliding of the push member is formed in the housing; an abutting protrusion abutted against the side of the push member is arranged on the wall of the sliding cavity; and the push member is provided with an oblique sliding surface abutted against the abutting protrusion. The improvedmoving-reed relay has advantages of simple and compact structure and low manufacturing cost; and problems that closing can not be realized and rebounding occurs are solved.

The invention relates to a hydraulic turnover side-sway elevator. The hydraulic turnover side-sway elevator comprises an elevator main body, a side-sway mechanism and a turnover mechanism, wherein rotatable rotary shafts are arranged at the left side and the right side of the elevator main body; a hinge and a blocking hinge are correspondingly arranged on the two rotary shafts separately; a hingedrive structure comprises a hinge opening-closing oil cylinder and an opening-closing oil cylinder fixing base; a blocking hinge drive structure comprises a blocking hinge locking oil cylinder and a locking oil cylinder fixing base; the opening-closing oil cylinder fixing base and the locking oil cylinder fixing base are arranged on the rear side wall of the elevator main body; the cylinder barrelpart of the hinge opening-closing oil cylinder is hinged on the opening-closing oil cylinder fixing base; the piston part of the hinge opening-closing oil cylinder is hinged with the hinge; the cylinder barrel part of the blocking hinge locking oil cylinder is hinged on the locking oil cylinder fixing base; and the piston part of the blocking hinge locking oil cylinder is hinged with the blockinghinge. The hydraulic turnover side-sway elevator can effectively solve the problems that a mechanical elevator which is mostly manually operated on the market is great in working strength, is low inworking efficiency and is great in potential safety hazards.

The invention proposes a Mira separation structure model for air automotive aerodynamics research. The Mira separation structure model comprises a main body, a tail cover, an intermediate plate and abottom plate, wherein the main body is an automotive body model framework, a front half part of the main body is an engine cabin and driver cabin, the engine cabin and the driver cabin both are cavities, a passenger cabin and a rear compartment position of a rear half part of the main body are cavities, the intermediate plate, the bottom plate and the main body are spliced to seal the cavity, a mortise is arranged on a back surface of a front row part of the passenger cabin, the tail cover is arranged on the intermediate plate, a tenon is arranged at a front end of the tail cover and is inserted into the mortise on the back surface of the front row part of the passenger cabin, an outer surface is flush after an edge of a lower end of the tail cover is spliced with a rear half part framework of the main body, and a plurality of pressure measurement holes are formed in each surface of the automotive body. By the model, the model weight is greatly reduced, and carrying and adjustment arefacilitated; and meanwhile, a measurement device is also convenient to install in the model, turbulent flow caused by an external measurement device to intervene experiment data can be prevented, thetail cover can be replaced, and comparison research is performed.

The invention discloses a small bone saw for joint surgery and belongs to the field of joint surgery devices. The small bone saw for joint surgery comprises a handheld arm, a power box is fixedly connected to the handheld arm, a long arm rod is connected to the power box in an inserted mode, an electric push rod matched with the long arm rod is fixedly connected to an interior of the power box, one end, away from the power box, of the long arm rod is fixedly connected with a movable joint, the movable joint is connected with a movable rod, one end, away from the movable joint, of the movable rod is fixedly connected with a working end table, the working end table comprises a shell, a mounting hole is formed in the shell, a hollow rotating shaft is rotationally connected into the mounting hole, a circular sawtooth blade is fixedly connected to the hollow rotating shaft, an induced draft fan is arranged in a rotating column, and a corrugated air guide pipe is connected between the induced draft fan and the hollow rotating shaft. Grinding and cutting can be carried out according to needs in an operation process. The small bone saw for joint surgery can be easily adapted to different use environments. By locking and fixing the movable rod and the corrugated air guide pipe, stability of a working end during working is guaranteed.