43results about How to "Increase or decrease friction" patented technology

The invention discloses a pay-off stand for a motor compensating winding, relating to the industry of motor production, in particular to a special tool for producing a motor stator compensating winding. The pay-off stand mainly solves the problems that existing multi-row wheel squeezing-pulling type pay-off stands cause damage and intersected deformation of the external insulation of an electromagnetic wire, affect subsequent coil formation and occupy a large area. The rotating shaft of the pay-off stand is connected on a support frame by a bearing, an electromagnetic wire coiling wheel is clamped and fixed on the rotating shaft by a wire support plate and a wire pressing plate, and a brake device of the rotating shaft is connected on the rotating shaft. The pay-off stand cannot damage the electromagnetic wire during the coiling of the compensating winding, can ensure the insulating property of coils of the motor compensating winding and improves the motor quality. The pay-off stand is also applicable to the winding of other types of motor stator coils.

An apparatus and method for stabilizing an optical tube on a base wherein a tension adjuster adapted to adjust the tension between the optical tube and sideboard of the base is secured between a the optical tube and the sideboard. By turning the tension adjuster, tension can be added or reduced to stabilize the optical tube.

The invention discloses a roller blind balance regulator and a roller blind with the same. The roller blind balance regulator comprises a stepped shaft and a friction drum; the stepped shaft is provided with an external screw thread; the stepped shaft penetrates through the friction drum; the friction drum is provided with an internal screw thread; the friction drum is in threaded connection withthe stepped shaft; and a friction layer is arranged between the friction drum and the stepped shaft. The roller blind comprises a roller blind rod, fabric, two mounting members and the roller blind balance regulator, wherein a return spring is arranged in the roller blind rod. The roller blind rod drives the friction drum to rotate, the friction drum moves in the axial direction of a limiting threaded rod while the friction drum rotates, and thus the friction force between the friction drum and a friction layer is increased or decreased. When the roller blind rod rotates, the friction force between the friction drum and the friction layer can be increased or decreased along with change of torque of the return spring, and thus the function of dynamically balancing the return spring is achieved. By means of the roller blind balance regulator and the roller blind with the same, the torque of the return spring can be balanced better, the friction force between the friction drum and the friction layer can dynamically compensate the torque difference of the return spring, and the using effect is good.

The invention relates to a self-locking control device for hoisting equipment. According to the technical scheme, the self-locking control device comprises a fixed outer ring, an inner ring and a disc cam, the peripheral surface of the inner ring is provided with a circumferential groove, multiple wedge blocks are hinged to the end face of the circumferential groove, a torsional spring is installed on the hinged portion of each wedge block, one end of each torsional spring is connected with the inner ring, and the other end of each torsional spring is connected with the corresponding wedge block; the peripheral surface of the disc cam is formed by sequentially and smoothly connecting multiple convex parts and smooth parts which are evenly distributed, each convex part makes contact with the inner edge surface of the inner ring, the groove bottom of the circumferential groove is provided with multiple through grooves which are arranged in the radial direction of the inner ring, and the other end of each wedge block is arranged in the corresponding through groove; a sliding block is installed in each through groove, one end of each sliding block makes contact with the corresponding smooth part of the disc cam, and a gap exists between the other end of each sliding block and the other end of the corresponding wedge block; and an input shaft is installed on the disc cam, an output shaft is installed on the inner ring, and a torsional spring is installed between the input shaft and the output shaft. The self-locking control device for the hoisting equipment is ingenious in structure, convenient and rapid to operate and high in safety.

A method of friction welding first and second parts together at an angular orientation relative to each other includes the steps of mounting the first part in a spindle for axial rotation and the second part in a non-rotatable holder. The spindle is then rotated and the angular orientation of the first part relative to the second part is determined at any specific time. The holder is moved toward the spindle to bring the second part into frictional contact with the first part at a selected one of the specific times that the angular orientation is determined. Accordingly, due to frictional contact, the respective contacting surface of the parts are melted. The speed of the rotation of the spindle is then decreased and the holder is moved toward the spindle to forcibly urge the first and second parts together at the contacting surface. Rotation of the spindle is stopped at a specific determined angular orientation of the first part relative to the second part while continuing to forcibly urge the parts together to allow cooling and fused solidification of the contacting surfaces.

The invention provides a secondary water supply pipeline cleaning device. The secondary water supply pipeline cleaning device comprises a barrel assembly, a switching valve assembly, a cleaning assembly, a cleaning linkage assembly and a cleaning sealing cover assembly. A main cylinder in the cylinder assembly is a pipeline main body; the switching valve assembly is arranged at the bottom of the main barrel body and can realize switching between effluent and clean wastewater; the cleaning assembly is located at the top of the main barrel in a standby state and comprises a plurality of groups of telescopic brushes; the cleaning linkage assembly is located on the upper portion of the cleaning assembly and can drive the cleaning assembly to rotate and ascend and descend in the main cylinder; the cleaning sealing cover assembly is located at an upper cover in the cleaning linkage assembly, a sealing cover plate is arranged in the cleaning sealing cover assembly, the cleaning assembly and the cleaning linkage assembly can be isolated from a water source in a normal water supply state, a pipeline is cleaned when water is emptied, it is not needed to add chemical agents, and the cleaning device has the advantages of being thorough in cleaning, energy-saving and environment-friendly.

The invention relates to a descending machine for absorbing energy through a damping element, and belongs to the technical field of firefighting and motion equipment. A lower rope wheel (3) and an upper rope wheel (5) butt against rubber springs (7) through grooves, so that the rubber springs (7) extend and absorb kinetic energy of personal descending. The rubber springs (7) butt against the lowerrope wheel (3) and the upper rope wheel (5) through rollers (71), and relatively roll to prevent the sliding friction with ropes (4), so that the service life of the ropes (4) is prolonged. The rubber springs (7) are wrapped by rubber layers, and are clamped with a secondary plate heat dissipating gap (61) and a main plate heat dissipating gap (12) through the rubber layers to prevent invasion and blockage of foreign matters, so that the safety and the reliability can be guaranteed; and the heat dissipating parts leave away from the lower ropes (4) for full heat dissipation. The damping energy absorption effect of the rubber springs (7) is adjusted through adjusting screws (66) and control ropes (9) to prevent acute fluctuation of the descending speed and to prevent the panic.

The invention discloses a disposable uroscope for convenient examination, and relates to the field of uroscopes, the disposable uroscope comprises a tube sheath, an intubation tube is movably sleevedin the tube sheath, two ends of the intubation tube extend out of the tube sheath, the tube sheath is provided with an air inflation mechanism and a fixing mechanism, one end of the intubation tube isfixedly connected with a handle, by the arrangement of an airbag, the tube sheath can be fixed, slipping of the tube sheath can be effectively prevented, the risk of urethral injury is reduced, whenthe adjusting knob is rotated, the rotating sleeve and the lens can be driven to rotate, multi-directional diagnosis and treatment can be conducted, when the pressing block is pressed, the piston canbe driven to move, then clean water in the cleaning cylinder can be sprayed out, and cleaning treatment is achieved. Meanwhile, turbid liquid and blood clots in the surgical vision can be sucked out under negative pressure, the surgical vision can be effectively cleared, which is convenient for follow-up operation of medical staff, and it is guaranteed that the kidney pressure of a patient is in anormal state in the surgery.

The invention relates to an adjustable anti-skid vehicle wheel. The adjustable anti-skid vehicle wheel is composed of a wheel hub, a tire, an air pressure regulator, an air duct, a stay rod, a fixed sleeve, an air pressure bag, an anti-skid inner wheel, a controller and an annular electrode, wherein the tire is mounted on the outer edge of the wheel hub; the air pressure regulator is installed inthe wheel hub, and an electrode of the air pressure regulator is connected with the controller through the annular electrode; the annular electrode surrounds the center of the wheel hub, and is installed on the inner side of the wheel hub; the bottom of the fixed sleeve is installed on the wheel hub, and the bottom of the fixed sleeve faces the center of the wheel hub; one end of the stay rod is installed in the fixed sleeve, and the anti-skid inner wheel is connected to the other end of the stay rod; the air pressure bag is installed in the fixed sleeve, between the stay rod and the bottom ofthe fixed sleeve; the air pressure bag is connected with the air pressure regulator through the air duct, and the anti-skid inner wheel is composed of a plurality of arc-shaped wheel rims; when the air pressure regulator is adjusted by the controller to pressurize the air pressure bag, the arc-shaped wheel rims of the anti-skid inner wheel are aligned to or protrude from the tire; and when the air pressure regulator is adjusted by the controller to decompress the air pressure bag, the arc-shaped wheel rims of the anti-skid inner wheel is recessed on the outer edge of the tire.

The detection methods for labels coatings or contaminants on waste or broken glass, arranged before a recycling process often give false readings on determining the true nature of the materials present, hence an at least partial removal of said contaminants is necessary. An intensive abrasion of the waste glass or broken glass introduced into the unit with continuously applied shear and compression forces between blades (6) and a housing (10) is generated by the provision of a dry-washing unit with just one rotating driven shaft (12), to which the blades (6) are fixed with a fixed minimum separation (16) from the inner wall of the housing (10). The required abrasion is achieved by compression of the material flow, and the friction of the shards against each other thus generated and also by the transport process within the machine. By means of a suitable interaction of the blades (6) and the housing (10), a thorough and complete abrasion of the labels and contaminants sticking to the broken glass can be achieved which renders a manual material selection unnecessary.

The invention provides a secondary water supply pipeline cleaning device, which includes a cylinder assembly, a switching valve assembly, a cleaning assembly, a cleaning linkage assembly, and a cleaning cover assembly; the main cylinder in the cylinder assembly is the pipeline body; the switching valve The components are arranged at the bottom of the main cylinder, which can realize the switching between the water outlet and the cleaning wastewater; the cleaning assembly is located on the top of the main cylinder in the standby state, including a group of retractable brushes; the cleaning linkage assembly is located on the upper part of the cleaning assembly , which can drive the cleaning assembly to rotate and lift inside the main cylinder; the cleaning cover assembly is located at the upper cover of the cleaning linkage assembly, and the cleaning cover assembly is provided with a cover plate, which can clean the assembly, The cleaning linkage assembly is isolated from the water source under normal water supply conditions, and the pipeline is cleaned when the water is drained without adding chemicals. It has the characteristics of thorough cleaning, energy saving and environmental protection.

The invention relates to a radial-matched prepuce gun which comprises a gun body, a glans penis cover arranged at a gun mouth at the front end of the gun body, a circumcising and suturing mechanism located on the rear side of the glans penis cover, and an operation mechanism for driving the circumcising and suturing mechanism. The circumcising and suturing mechanism comprises a nail bin, a plurality of nail pushing pieces annularly distributed on the nail bin, a nail pushing base driven by the operation mechanism to move forward or backward, and trigger rods arranged on the front side of the nail pushing base and corresponding to the nail pushing pieces one to one. A rail which extends in the radial direction with the symmetrical center of the nail pushing pieces as the circle center is arranged on the nail bin. The front end of the trigger rods are matched with the outer side ends of the nail pushing pieces so that the nail pushing pieces can be driven to slide towards the inner sideof the rail. The invention is aimed at providing the radial-matched prepuce gun which can increase the circumcising amount. The radial-matched prepuce gun has the advantages that by means of a radialsuturing mode, the suturing surface of the gun is parallel to the plane where a prepuce root part is located, the suturing position can infinitely approach the prepuce root part, and redundant prepucecan be cut off to the maximum extent.

A precision inchworm motor for micro-pipe detection provided by the present invention is characterized in that it includes a driving mechanism and a clamping mechanism 1 and a clamping mechanism 2 located on the front and rear sides of the driving mechanism, and is driven by the driving mechanism under the action of the driving current 1. Clamping mechanism one advances, and the driving mechanism drives clamping mechanism two to advance. The present invention designs a precision inchworm linear motor for micro-pipe detection based on the principle of inchworm motion by means of intelligent material drive technology and compliant mechanism technology. In order to facilitate the clamping mechanism to clamp the inner wall of the pipeline, a symmetrical four-compliant claw is designed to achieve the clamping function with interference fit; the driving mechanism uses an intelligent material actuator and a compliant spring design with an annular groove to realize Reset function after end of precession. The invention can realize operations such as defect detection and load handling under the requirement of micro-nano scale precision, and can also provide a reference scheme for in vivo detection in the field of biomedicine.

The invention discloses a hub unit and an electronic device provided with the same. The hub unit comprises a rotating shaft, a first connecting piece, a second connecting piece, an adjusting piece, and an elastic piece. The first connecting piece is connected with the rotating shaft. The second connecting piece is rotatably connected with the rotating shaft. The adjusting piece is movably arranged at one end of the rotating shaft. When the first connecting piece is rotated, the rotating shaft is rotated correspondingly. Then the adjusting piece is moved axially along the rotating shaft. In this way, the adjusting piece has a first position and a second position relative to the rotating shaft. The elastic piece is positioned between the second connecting piece and the adjusting piece. When the adjusting piece is positioned at the first position, the elastic piece is in a relaxed state. When the adjusting piece is at the second position, the elastic piece is pressed by the adjusting piece. Therefore, the second connecting piece is pressed by the elastic piece.

The invention discloses a multifunctional teaching aid rod applied to mathematics teaching. The multifunctional teaching aid rod comprises a first graduated scale and a second graduated scale, a hollow pen cap with an opening in the lower end is connected to one end of the first graduated scale, a first inserting groove is formed in the end, away from the pen cap, of the first graduated scale being inwards cut in the length direction of the first graduated scale, a first sliding rod is slidably connected into the first inserting groove, and a first rotating connector is connected to the end, close to the opening, of the first sliding rod. A conical tip is connected to one end of the second graduated scale, a second inserting groove is formed in the end, away from the conical tip, of the second graduated scale being cut inwards in the length direction, a second sliding rod is slidably connected into the second inserting groove, a second rotating connector rotationally connected with the first rotating connector is connected to the end, close to the opening, of the second sliding rod, and the first rotating connector and the second rotating connector can be retracted into the first inserting groove or the second inserting groove. The multifunctional teaching aid rod can be used as a teaching rod, a straight ruler, a triangular ruler and compasses, is convenient to carry and use, and contributes to improving the teaching efficiency.