39results about How to "Large locking torque" patented technology

The invention discloses a structure of a locknut. A main nut (2) comprises a nut head (4), a middle screw joint section (5) and a tail adjusting section (7) from front to back. An external thread I (6) is arranged on the surface of the middle screw joint section (5). The perimeter of the nut head (4) is larger than that of the middle screw joint section (5). The diameter of the middle screw joint section (5) is larger than that of the tail adjusting section (7). The diameter of a front-section internal screw hole (8) of an auxiliary nut (3) is larger than that of a back-section internal screw hole (9) of the auxiliary nut (3). A front internal thread II (10) is arranged on the inner wall of the front-section internal screw hole (8). A back internal thread III (11) is arranged on the inner wall of the back-section internal screw hole (9). The invention further discloses a locking adjusting method between the main nut and the auxiliary nut of the locknut. By the adoption of the structure of the locknut and the locking adjusting method, a fastened workpiece is protected, it is guaranteed that looseness of all the locking links in various bad working environments such as frequent vibration and load fluctuation is avoided, and the real constant looseness-prevention effect is achieved.

The invention discloses a rotary cutter sharpening seat for a cutter, comprising a base, rotating pieces, a rotary shaft and a locking piece, wherein the rotary shaft is divided into X, Y and Z rotary shafts; the Z rotating piece is provided with a lathe tool mounting hole, the center line of which is vertical to the Z rotary shaft of the Z rotating piece; the Y rotating piece is provided with a YZ middle-position hole, the center line of which is vertical to the Y rotary shaft of the Y rotating piece; the Z rotating piece is sleeved in the YZ middle-position hole, the center line of which is collinear with the axis of the Z rotary shaft; the X rotating piece is provided with an XY middle-position hole the center line of which is vertical to the X rotary shaft of the X rotating piece; the Y rotating piece is sleeved in the XY middle-position hole the center line of which is collinear with the axis of the Y rotary shaft; the center line of the YZ middle-position hole of the Y rotating piece is crossed on the X rotating piece; the base is also provided with an X rotating support; and the X rotating piece is sleeved on the X rotating support, the rotating shaft of which is collinear with the X rotary shaft of the X rotating piece. When the rotary cutter sharpening seat is used, after a tool grinding machine provided with the cutter sharpening seat is clamped and lathed, continuous multi-face grinding can be performed at any blade surface angles to finish integral lathing and blade sharpening once, the operation of clamping for multiple times is avoided, and angle space conversion is not needed; the big lathing offset when the angle is regulated is eliminated; the rigidity of the cutter sharpening seat is improved; machining errors due to the cutter relieving phenomenon are reduced; and the locking reliability is further improved to increase the convenience in use and realize the miniaturization of a matched tool grinding machine and higher blade grinding precision.

Blocking apparatus, as well as a gearbox drive unit containing such a blocking apparatus, as well as a method for production of a gearbox drive unit such as this for blocking any rotary movement of a shaft (14) with respect to a housing (16) of a gearbox drive unit (10), having a first blocking element (32) and having a second blocking element (34) which can be moved axially with respect to the first blocking element (32) by means of an electromagnet (44) and at least one return element (42), in order to produce a connection between the first blocking element (32) and the second blocking element (34) such that they cannot rotate with respect to one another, with the electromagnet (44) having an inner pole (47) which is surrounded by an electrical coil (45), and with the inner pole (47) having an axial projection (51) which engages in a corresponding opening (64); in the second blocking element (34), for axial guidance and centring.

The invention discloses a polyhedron precision machining device and provides the polyhedron precision machining device with a feedback detection function. The polyhedron precision machining device with the feedback and detection function is large in locking torque, high in locating accuracy, low in manufacturing cost and capable of accurately locking face turning positions of a polyhedral blank to be machined and solves the technical problems that in the prior art, the grinding accuracy, the machining accuracy and the locating accuracy of a polyhedral workpiece are low, the manufacturing cost of an existing polyhedron precision machining device is high. The polyhedron precision machining device comprises a machining platform, a grinding disk and a grinding head device, wherein the grinding disk and the grinding head device are arranged on the machining platform. A face turning mechanism, an angle turning mechanism and a turning angle locking mechanism are arranged on the grinding head device. The face turning mechanism comprises a box body and a plurality of tubular indexing shafts, wherein the indexing shafts are connected to the interior of the box body in a rotating mode. The front ends of the indexing shafts penetrate through the box body and extend to the positions above the grinding disk. Workpiece fixing rods provided with the polyhedral blanks are fixed to the front ends of the indexing shafts through clamping mechanisms. Indexing plates with indexing teeth are arranged on the corresponding indexing shafts in the box body in a sleeved mode. Taper pins which can be inserted between the adjacent indexing teeth in a matched mode are arranged on the positions, above the indexing plates, of the box body.

The invention provides an improved locking mechanism on a surgical instrument, and specifically relates to an improved locking mechanism on a knuckle joint on an anastomat. A knuckle structure betweenan anastomat end execution device and a slender shaft is improved. A locking plate with an arc groove and a locking rod with a slope are cooperated, through upper and lower inner surfaces of the arcgroove and the upper and lower inner surfaces of the locking rod, the locking mechanism clamps or contacts in a frictional manner, so that the locking mechanism has large locking moment, and a technical problem that a soft tissue in a conventional locking mechanism is easily damaged by teeth on a knuckle would not occur.

The invention relates to biplanar frictional two-freedom-degree joints based on hydraulic pressure. The outer edge of the upper side of the lower plane of a T-shaped shaft of an upper joint is provided with wedge-shaped faces, a bar part is sleeved with a force transmission slide block of the upper joint, the diameter of a round hole of the force transmission slide block of the upper joint is larger, the bar part is installed in a casing of the upper joint by a bearing, extends out to be connected with one end of a platform body of the joints, and the end part of a push bar is matched with the two wedge-shaped faces of the T-shaped shaft of the upper joint; a T-shaped shaft of a lower joint is connected below the other end of the platform body of the joints, the lower end is sealed in a sealing cover of the lower joint, and the sealing cover of the lower joint is fixedly connected with a supporting shaft of the joints; and an ejector bar is installed in a hollow structure of the T-shaped shaft of the lower joint, a sealing bolt is installed at the hollow bottom, a distance exists between the lower end of the ejector bar and the lower end of an ejector bar of the sealing bolt, and the upper end contacts with the force transmission slide block of the upper joint. The invention has small volume, compact structure, light weight, large locking moment, simple structure and small joint clearance after being locked and can be suitable for locking the joints of various miniature type mechanical arms with lighter end static bearing.

Provided is a vehicular door-hinge device with a checker, which comprises an inner cylinder (6) to be jointed to a female bracket (1), an outer cylinder (7) to be jointed to a female bracket (2), and a check force generating mechanism (20) interposed between the two cylinders (6 and 7). The mechanism (20) is constituted of a plurality of holding members (22) attached to the outer cylinder (7) and arrayed in the circumferential direction of the same, and a plurality of elastic members (23) for biasing those holding members (22) individually toward the inner cylinder (6). Each of the holding members (22) is equipped with a detent projection (26) for abutting against the outer circumference of the inner cylinder (6). The inner cylinder (6) is equipped, in its outer circumference, with a plurality of detent grooves (27), into and out of which the engagements of the detent projections (26) are made according to the relative rotations of the inner cylinder (6) and the outer cylinder (7). The pressure receiving areas of the holding members (22) for receiving the pressures from the elastic members (23) are set larger than the abutting areas of the detent projections (26) and the detent grooves (27). As a result, the vehicular door-hinge device does not lose the checking function, even if the check force generating mechanism is partially troubled, but is high in durability.

The invention discloses a rear door locking device of a multifunctional washing and sweeping truck. The rear door locking device comprises a box body, a rear door, an oil cylinder, a push-pull rod hinge base, a push-pull rod, a locking base, a locking hook rotating shaft and a locking hook; the push-pull rod hinge base is fixed in the middle of the rear door; a kidney-shaped guide groove is formed in the push-pull rod hinge base; a hinge shaft is connected to the inner side of the kidney-shaped guide groove in a sliding mode, is hinged to a piston rod of the oil cylinder and is hinged to the upper end of the push-pull rod; the locking hook comprises a thrust arm and a hook body; a shaft hole matched with the locking hook rotating shaft is formed in the intersection of one end of the hook body and one end of the thrust arm; the lower end of the push-pull rod is hinged to the other end of the thrust arm; the locking base is arranged at the rear lower part of the box body; and when the piston rod of the oil cylinder extends out to reach the extreme value, the other end of the hook body of the locking hook is hooked on the locking base, and an included angle between the center line of the push-pull rod and the center line of the thrust arm of the locking hook is a right angle. The rear door locking device has the advantages that the rear door can be guaranteed to be locked under the impact of sewage in the box body, and therefore opening of the rear door can be avoided.

The invention belongs to the field of machine tool machining and production, and particularly relates to a rotating table based on zero point positioning and application of the rotating table. According to the technical scheme, the rotary table comprises a sliding base, a rotary base, a working table plate, T-shaped guide rails, a rotary table bearing, a rotation control mechanism, a lifting control mechanism and a locking mechanism, the rotary base is rotationally connected with the sliding base through the rotary table bearing, the two T-shaped guide rails are symmetrically installed on the upper end face of the rotary base, and two T-shaped guide grooves are formed in the lower end face of the working table plate; the working table plate is mounted on the T-shaped guide rails through the T-shaped guide grooves; a plurality of zero-point positioning female discs are arranged on the upper end face of the rotary seat, a plurality of zero-point positioning male heads are arranged on the lower end face of the working table plate, and the zero-point positioning male heads correspond to the zero-point positioning female discs one by one in position; the rotation control mechanism, the lifting control mechanism and the locking mechanism are used for controlling rotation, lifting and locking of the workbench plate. The device is reliable and stable in positioning, large in locking torque, high in repeated positioning precision and capable of achieving rapid exchange of parts.

The invention discloses an electromagnetic brake control device and method. The device comprises a control core unit, a clock unit, a photoelectric conversion input unit, a photoelectric conversion output unit and an electromagnetic brake control interface unit, The control core unit is used for receiving a brake input signal and a clock signal and sending a brake output signal; the photoelectricconversion input unit is used for sending the brake input signal to the control core unit; the photoelectric conversion output unit is used for sending the brake output signal to the electromagnetic brake control interface unit; the electromagnetic brake control interface unit is used for driving an electromagnetic brake to attract. The system adopts a control mode of high-pressure suction and low-pressure holding, the high-pressure suction ensures that the electromagnetic brake has larger locking torque at the suction moment, the low-pressure holding can effectively reduce the heating aging of the electromagnetic brake caused by long-time high-pressure suction, and the service life of the electromagnetic brake is greatly prolonged.

The invention provides a lockable rotary driving mechanism, an electric rotary seat and an automobile. The rotary driving mechanism comprises a fixed support, a rotary bearing disc which is fixedly connected with the fixed support and provided with an inner ring, a locking disc which is fixedly connected with the inner ring and provided with a plurality of protruding blocks, wedge-shaped spaces defined by the locking disc and the fixed support jointly are formed between the adjacent protruding blocks, and rigid gap sealing bodies and elastic reset pieces are arranged in the wedge-shaped spaces. The rotary driving mechanism further comprises a rotary driving module fixedly connected with the fixing support and a shifting fork connected to the power output end of the rotary driving module. The rotary driving mechanism has a locking function, can provide large locking torque, and can overcome the defect of insufficient locking torque in the prior art.

The invention provides a pre-molding seat structure and an injection molding machine with the pre-molding seat structure. The pre-molding seat structure comprises a pre-molding seat which is used forbeing arranged on a transmission shaft in a sleeving manner, a first bearing arranged on the transmission shaft in a sleeving manner and located between the pre-molding seat and the transmission shaft, a locking piece arranged on one side of the first bearing and adjustably arranged in the axial position of the transmission shaft so as to axially lock the first bearing, and an isolation pad arranged on the inner side of the inner ring of the first bearing, wherein the isolation pad is fixedly arranged relative to the transmission shaft, so that after the locking piece pushes the inner ring ofthe first bearing by a preset distance in the axial direction of the transmission shaft, part of pressure of the locking piece is borne through the isolation pad. According to the technical scheme, the problem that in the prior art, the locking torque of a locking nut in a pre-molding seat structure is not easy to control, and consequently the working quality of a bearing is affected is solved.

The invention discloses a guiding and locking device for a vertical rotating type anti-flooding protective door. The device specifically comprises a guiding and locking stand column unit, a hydraulicdrive locking unit and a hydraulic drive locking unit mounting support, wherein the guiding and locking stand column unit is installed at the bottom of the cantilever end of a door body, the hydraulicdrive locking unit is arranged on the hydraulic drive locking unit mounting support, and the hydraulic drive locking unit mounting support is fixed on the ground according to the limit position afterthe door body is opened. When the door body is opened to the limit position, a hydraulic cylinder in the hydraulic drive locking unit drives two sets of spring bolt units to hold tightly a locking stand column on the guiding and locking stand column unit so as to complete locking of the door body, and therefore, the door body is fixed; and the device has the advantages of being simple in structure, small in occupied space, high in locking speed, large in locking torque and stable and reliable in operation.

The invention relates to the field of rolling mechanisms, in particular to a shaft sleeve mechanism capable of being locked at any angle and position in two directions. A rolling mechanism comprises amechanism housing, a shaft, roller pins, unlocking pin discs, elastic piece discs, wedge-shaped groove large head ends and wedge-shaped grooves; the wedge-shaped grooves are distributed in the innerwall of the mechanism housing, a wedge-shaped groove large head end is arranged on one side of each wedge-shaped groove, one end of each roller pin is arranged in the corresponding wedge-shaped grooveand disposed in the mechanism housing, the elastic piece discs and the unlocking pin discs are movably connected in two openings of the mechanism housing respectively, and every two roller pins constitute a roller pin group; elastic pieces are distributed on the elastic piece discs, each elastic piece is arranged between the two corresponding roller pins constituting a roller pin group, and unlocking pins for penetrating through the portion between every two adjacent roller pin groups are distributed on the unlocking pin discs. The locking torque is large, the size is small, the middle part can also be designed to be hollow, working media such as gas, liquid and electricity can be passed, signal cables can be connected, and the rolling mechanism can be conveniently integrated into a wholemachine for use.

The invention belongs to the technical field of control components, and particularly discloses a bolt positioning type blade rotating structure and a blade type pneumatic rotating index plate. The bolt positioning type blade rotating structure comprises a shell assembly; a blade pneumatic cavity and a bolt pneumatic cavity are arranged at an input end of the shell assembly; a blade shaft is rotatably connected into the blade pneumatic cavity; blades of the blade shaft are contained in the blade pneumatic cavity; a plug pin is slidably connected into the plug pin pneumatic cavity; an output end of the shell assembly is provided with an output piece and a linkage cavity; a connecting end of the output piece is located in the linkage cavity; a tail end of the plug pin extends into the linkage cavity and is intermittently inserted into or withdrawn from an indexing positioning hole of the output piece; and a tail end of the blade shaft extends into the linkage cavity and is rotatably connected with the output piece along with retreating of the plug pin. The blade rotating structure integrates the rotating action of the blades and the sliding positioning action of the plug pin, and has the advantages of being small in size, light in weight, large in driving and locking torque force, high in positioning precision and capable of smoothly switching forward rotation and reverse rotation.