52results about How to "Adjustable force" patented technology

An exercise device is provided which is used in exercising of the abdominal muscles as well as in exercising the muscles of the upper torso, shoulders and arms while the back of the user is supported, elongated and stretched. The device includes a platform which is elevated at one end from a supporting surface for the device. A seat is located at the one end of the platform and a bowed back support member is disposed on the platform adjacent to the seat. The support member presents a convex curved surface of a longitudinal extent such that the back and head of the user can rest thereon with the user in a backwardly reclining posture. A resilient belt fits around the waist of the user while a restraining arrangement preferably in the form of flexible restraining members is adapted to engage the arms of the user during movement of the user from the backwardly reclining posture wherein the back of the user rests against the convex curved surface to a sitting position. The restraining arrangement thus increases the force that must be exerted by the abdominal muscles of the user in carrying out this movement.

The invention relates to an air compressor with ultrasonic bearings. The air compressor with ultrasonic bearings comprises a shell, a motor stator, a motor rotor and a rotor shaft from outside to inside, and further comprises the ultrasonic bearings and a spiral groove type thrust bearing, wherein bearing bushes are arranged at the two ends of the shell, impellers are arranged at the two ends of the rotor shaft respectively, the impellers are sleeved with impeller shells, the impeller shells are in sealing connection with the bearing bushes and are provided with air inlets and air outlets, the air outlet of the impeller shell at one end is connected with the air inlet of the impeller shell at the other end, the ultrasonic bearings are arranged on the bearing bushes at the two ends and are in noncontact connection with the rotor shaft, the spiral groove type thrust bearing is arranged on the part, between the bearing bush at one end and the impeller at the same end, of the rotor shaft, and a thrust bearing cap is arranged between the spiral groove type thrust bearing and the corresponding impeller. Compared with the prior art, the air compressor with ultrasonic bearings has the advantages of being high in rotation speed and efficiency, long in service life, free of lubricating oil and the like.

The invention relates to a tactile stimulating device with measurable tactile stimulating force and adjustable force frequency. The tactile stimulating device comprises an alternating current motor mechanism which is used for sending a pulse and driving an eccentric wheel to rotate, an elastic steel ruler mechanism for generating elastic deformation, an eccentric wheel mechanism for generating force data, and a probe mechanism which is used for generating a displacement in the vertical direction to change to stimulate the epidermis of a living organism, wherein the alternating current motor mechanism is fixedly connected with the eccentric wheel mechanism; the eccentric wheel of the eccentric wheel mechanism is closely attached to an elastic steel ruler of the elastic steel ruler mechanism; and the probe mechanism is fixedly arranged on the lower end surface of the elastic steel ruler mechanism. The tactile stimulating device is simple in structural design, high in integration degree and safe to work; an electromagnetic material covers the outer surface of an alternating current motor to form an electromagnetic shielding device, so that interference is basically eliminated, and the signal stability is high; by the adoption of a noninvasive mechanical stimulation mode, no wound can be caused in the use process; and as the frequency can be adjusted and the stimulating strength can be adjusted, the force action is stable, and the tactile stimulation within a relatively wide frequency range can be flexibly modulated.

The invention provides a coating roll assembly of a coating machine, belongs to the technical field of printing and dyeing, and solves the technical problems that the existing coating device is non-uniform in coating, poor in coating effect, poor in adaptability and the like. The coating roll assembly of the coating machine is characterized by comprising an upper roller and a lower roller, the lower roller is axially fixed on a stander in a circumferential rotating manner, the lower roller is arranged in a coating solution trough, the upper roller is axially fixedly arranged right above the lower roller and is against the lower roller in a circumferential rotating manner, the upper roller and the lower roller are parallel to each other, the upper roller is connected with a force application mechanism which is used for enabling the upper roller to contact the lower roller and generating given pressure, and the lower roller is connected with a rotating mechanism capable of driving the lower roller to rotate. The coating roll assembly of the coating machine has advantages of good coating effect, wide application range and the like.

The invention discloses a pesticide sustained release granule containing thiamethoxam and a preparation method thereof, wherein the pesticide sustained release granule is prepared from the following raw materials in parts by weight: thiamethoxam, anhydrous calcium sulfate, kaolin, other carriers, membrane material and white carbon black, and the membrane material is calculated in parts by mass and comprises the following components: 0.1-15 percent of displacer, 5-60 percent of curing agent, 0.01-5 percent of membrane filter agent, 0.2-5 percent of passivation material, and the balance of cross-linking agent, wherein the structure of displacer is similar with that of the thiamethoxam, and the pesticide sustained release granule is sequentially prepared according to the following steps of mixing, prilling, spraying membrane firstly, spraying membrane secondly, protecting granule, toning, checking and packaging, and the effective constituent of the pesticide sustained release granule is similar with that of the displacer, gradually penetrates outward, and the sustained release period is long, the pesticide effect is stable, the preparation method is simple and the cost is low.

The present invention discloses an integrated device for in-situ static and dynamic force calibration. The integrated device comprises a loading mechanism, a direction control mechanism, a force source control mechanism and an alignment and clamping mechanism; one end of the direction control mechanism is connected with the loading mechanism, and the other end of the direction control mechanism is fixed to one end of the force source control mechanism; and the alignment and clamping mechanism is connected with the other end of the force source control mechanism. With the integrated device adopted, the actual working condition of a system can be simulated in situ, and static force calibration or dynamic force calibration can be performed on the system under a condition that the working sensor of the system is not disassembled. According to the integrated device, the directivity of the excitation force of the integrated device is excellent, and the positions of the acting points of the excitation force of the integrated device are consistent; excitation of different force values can be applied, the magnitude of the excitation can be adjusted, and an exciting frequency range is wide; and a pressed component can be automatically aligned and clamped, and accurate alignment and limiting can be realized through using a vernier. The integrated device can be flexibly installed and used in a horizontal or vertical direction. The integrated device is compact in structure and is easy to operate.

The invention provides a preparation method of a silicone oil-containing lubricating anti-corrosion composite coating with a low friction coefficient. Silicone oil is used as a corrosion inhibitor anda lubricant, and solid-liquid separation in the coating is realized by utilizing the characteristic that low-molecular silicone oil still keeps a liquid state at the curing temperature of polyurethane. Controllable surface migration of organic silicon is achieved by adjusting the type or content of silicone oil, and the wear-resisting service life is prolonged while the friction coefficient of the coating is reduced. The preparation method is simple in preparation and convenient to use, the acting force between the polyurethane matrix and silicone oil molecules is adjustable, and uniform dispersion and controllable release of silicone oil are realized. A composite coating can realize controllable release of the silicone oil filler under stimulation of friction motion, and can simultaneously realize lubrication and corrosion resistance effects through a solid-liquid composite lubrication action mechanism and hydrophobicity of silicone oil, so that the coating has excellent antifrictionand anti-wear properties and corrosion resistance, and the composite coating has huge application potential and market value in the fields of friction and corrosion.

A method for tripping safety gear of an elevator, at a speed lower than a gripping speed of the elevator may include: slowing a rope sheave of an overspeed governor of the elevator using a device adapted to slow the rope sheave; disconnecting an actuator connected to the overspeed governor from movement of the rope sheave when the device slows the rope sheave; and tripping the safety gear in an overspeed situation using a rope driving the overspeed governor via the rope sheave. An appliance for tripping safety gear of an elevator may include: an overspeed governor; a rope sheave of the overspeed governor; a device adapted to slow the rope sheave; and an actuator connected to the overspeed governor that is arranged to disconnect from movement of the rope sheave when the device adapted to slow the rope sheave acts to slow the movement of the rope sheave.

The invention discloses a device for scrapping welding slag outside welding pipes. The device comprises a mounting base, a supporting frame and plane cutter assemblies. The device is characterized inthat the supporting frame and the mounting base are in sliding connection; mounting grooves are formed in the supporting frame, a plane cutter adjusting mechanism is arranged in each mounting groove and comprises a horizontal drive assembly, a lifting assembly and a cantilever assembly, and each lifting assembly is connected with the corresponding drive assembly and the corresponding cantilever assembly; the cantilever assemblies are connected with the plane cutter assemblies; and the lifting assemblies corresponding to the plane cutter adjusting mechanisms are arranged on the supporting frame. The device has the beneficial effects that the overall moving structure is adopted, dual plane cutters are arranged, one plane cutter is used while the other plane cutter is used for standby application, the structure is simple, the device is suitable for production of welding pipes of multiple specifications, the work state is stable, the plane cutter replacement time is saved, production can be carried out continuously, and the work efficiency is improved.

The invention discloses a hydraulic buffer device for a center frame of a heavy machine tool. The buffer device comprises a center frame base, a hydraulic buffer jacking mechanism and an adjusting mechanism, wherein the hydraulic buffer jacking mechanism is arranged on the center frame base and comprises an adjustable jacking piece and a hydraulic buffer seat; the adjustable jacking piece is columnar and is in sliding fit with the center frame base; the hydraulic buffer seat is fixed to the center frame base and abuts against the end of the adjustable jacking piece; and the adjusting mechanismis arranged on the center frame base and acts on the adjustable jacking piece. Acting force brought by a workpiece can be buffered after instantaneous bearing of the adjustable jacking piece, abrasion of a lead screw and a nut is effectively avoided, and the service life of the center frame is prolonged.

The invention relates to the technical field of spinning machines, in particular to a telescopic arm structure of a hub roller press. The telescopic arm structure of the hub roller press comprises a Z-axis main body, a positioning mechanism, a rolling wheel assembly, a roller disc rotating mechanism and a tensioning mechanism. A B-axis servo motor drives a second lead screw to rotate, so that a second nut is driven to move up and down, then a chain connecting block is driven to move up and down, the chain connecting block moves up and down to pull a chain, then a rotary main chain wheel rotates, a rotary main chain wheel on the lower portion rotates to drive a rotary shaft to rotate, then a positioning fluted disc rotates to drive the rolling wheel assembly on the positioning fluted disc to rotate by a certain angle, then the angle relation between a rolling wheel and the to-be-machined part is adjusted, the purpose of adjusting the rolling angle is achieved, and the outer surface and the inner surface of a hub are rolled at a time and rolled comprehensively.

The invention discloses a thrust plate reliability test device, which is characterized in that the thrust plate reliability test device comprises a tool clutch cover, a release bearing assembly, a positioning assembly and a thrust adjusting assembly, a positioning hole is formed in the middle of the tool clutch cover, a round hole is formed in the center of the release bearing assembly, one end of the release bearing assembly is provided with two symmetrical limiting ends and four symmetrical spring circular grooves, the positioning assembly is installed in the middle of the tool clutch cover, the thrust adjusting assembly is distributed on the left portion of the positioning assembly, the release bearing assembly is installed on the right portion of the positioning assembly, and the thrust adjusting assembly is matched with the release bearing assembly. The thrust plate reliability test device has the advantages of being compact in structure, easy to install, adjustable in stress, capable of being connected with an engine for real operation test and accurate in test result.