8results about How to "Reduce friction area" patented technology

The application discloses a liquid metal bearing for an X-ray tube and the X-ray tube, relates to the technical field of X-ray tubes, and solves the technical problems of short service life and poor heat dissipation effect of the bearing. The liquid metal supporting bearing comprises a bearing sleeve, a mandrel, liquid metal and a microporous structure; the bearing sleeve is sleeved outside the mandrel, and a gap is arranged between the bearing sleeve and the mandrel; the liquid metal is filled in the gap; the microporous structure is arranged on the inner surfaces opposite to each other of the bearing sleeve and the mandrel and / or the outer surfaces opposite to each other of the mandrel and the bearing sleeve, the microporous structure is formed by a plurality of micropores arranged in an array, and the microporous structure has a protruding direction consistent with the flowing direction of the liquid metal. The liquid metal distribution is optimized through the micropores and optional microslit structures between the bearing sleeve and the mandrel, the friction coefficient is reduced, the heat dissipation performance is enhanced, and the service life and the heat dissipation effect of the bearing can be remarkably improved.

The utility model belongs to the technical field of open-end spinning, and particularly relates to a spool conveying and correcting mechanism which comprises a correcting plate and guide wheels, a yarn guide groove used for guiding yarn is formed in the correcting plate and extends in the length direction of the correcting plate, fixing frames used for being connected with the guide wheels are arranged on the two sides of the correcting plate, and the guide wheels are arranged on the fixing frames. The tops of the two fixing frames are oppositely arranged in the width direction of the correcting plate, the guide wheel is rotatably connected between the ends of the bottoms of the two fixing frames, baffle rings are arranged on the guide wheel, and the two baffle rings are oppositely distributed on the guide wheel to form a clamping groove. The yarn conveying path is corrected so as to expect to reduce the shaking amplitude of the yarn and reduce the friction area between the yarn and the yarn drum, the guide wheel is moved through the adjusting assembly so as to adjust the wrap angle of the yarn on the guide wheel, the purpose of adjusting the yarn tension is achieved, and the stability of yarn conveying is further improved.

This invention discloses a dual-piezoelectric tube driven inertial motor and its control method, along with a scanning probe microscope, relating to the field of piezoelectric tube technology. The invention includes a base, a first piezoelectric tube, a second piezoelectric tube, and a U-shaped sliding body. The first and second piezoelectric tubes are parallel to each other along their axes, with one end fixed to the base and the other end free. The two parallel arms of the U-shaped sliding body, referred to as the left and right sliding rods, are elastically connected via a junction at the bottom of the U-shaped sliding body. The left and right sliding rods are coaxially inserted into the inner walls of the first and second piezoelectric tubes, respectively. This invention not only ensures that the two sliding rods consistently and stably abut against the inner cavities of their respective piezoelectric tubes, guaranteeing effective transmission of driving force, but also improves the overall mechanism's motion accuracy, load-bearing capacity, and anti-interference capability through the coordinated and alternating operation of the dual-drive piezoelectric tubes, laying a structural foundation for achieving high-precision and high-stability stepping motion.

The utility model relates to the technical field of tensioner, and disclose a kind of tensioner structure, it includes first frame, second frame, belt shaft spare and ratchet, the first frame and second frame are rotatably connected by belt shaft spare, first frame and second frame can rotate around belt shaft spare, second frame is located in the inside of first frame, the outer end both sides of belt shaft spare are all sleeved with ratchet, and the ratchet of both sides is located the outside both sides end of first frame respectively;The utility model, by the ratchet being arranged in the outside both sides end of first frame, so that only inside surface and first frame rub in the rotation process, and the design of convex ring is adopted, effectively reduce the friction area between ratchet and frame, reduce friction force, compared with traditional ratchet built-in, double-sided friction, the ratchet external mode of the device, single-sided friction stress, and the design of convex ring, reduce friction force, so that tensioner is more smooth in the process of loosening, improve use efficiency and operation experience.

The utility model provides a three-axis truss manipulator, and belongs to the technical field of truss manipulators. The truss manipulator solves the problems that an existing truss manipulator conducts guiding sliding through a sliding rail and a sliding block, the sliding rail and the sliding block make close contact, friction between the sliding rail and the sliding block is large, large noise can be generated, the working environment of operators is poor, and the noise greatly influences work of the operators. The three-axis truss manipulator comprises a supporting frame, an X-axis part is fixedly arranged on the supporting frame, a fixing plate is arranged on the X-axis part in a sliding mode, a Y-axis part is arranged on the fixing plate in a sliding mode, a fixing shell is fixedly arranged on the Y-axis part, a Z-axis part is arranged in the fixing shell in a sliding mode, and sliding rails are fixedly arranged on the X-axis part, the Y-axis part and the Z-axis part. The sliding block has the advantages that the contact area between the sliding block and the sliding rail is reduced, the friction area between the sliding block and the sliding rail is further reduced, and therefore the sliding noise between the sliding block and the sliding rail is reduced.

This utility model provides a foldable stool, relating to the field of portable seating, and solves the technical problem of large bolt shearing forces during opening and closing of foldable stools, leading to damage. The foldable stool includes a webbing, a pivot fastener, and at least two stool leg frames that can pivot to switch between an unfolded and folded state. The two ends of the webbing are detachably fixed to the two stool leg frames. In the area where the stool leg frames pivot and contact each other, a protruding structure with a through hole is provided on the stool leg frame. The protruding structures on different stool leg frames abut against each other, and the pivot fastener passes through the through holes on the two protruding structures, thereby hinged the two stool leg frames. When the two stool leg frames pivot, only the protruding structures contact each other, while a gap is maintained between the main body parts of the stool leg frames. This reduces the contact area during pivoting, greatly reducing the friction area, improving shear resistance, and enhancing durability.

The utility model discloses a novel improved stomach tube, including upper section pipe, lower section pipe, thin pipe, outer tube, connecting pipe and guide wire, upper section pipe and lower section pipe are connected with thin pipe, thin pipe is flexible hose, and the pipe diameter is small and can expand and become big, the outer tube is sleeved on the outside of upper section pipe and can slide to the outside of thin pipe to limit its excessive expansion, one end of connecting pipe is connected with upper section pipe, and the other end can be connected with syringe, which is convenient for suction and nasal feeding, and the guide wire can be penetrated into connecting pipe, upper section pipe, thin pipe and lower section pipe, and is used for guiding insertion into digestive tract, the advantage is that the design of flexible soft thin pipe, when remaining, can reduce friction with laryngeal part, avoid causing laryngeal part damage, edema and influence respiratory tract patency.

The application discloses a composite buffer type low-damage brake performance enhancing device, which comprises a brake disc, a first brake assembly and a U-shaped block arranged on the brake disc, a blocking mechanism arranged on the U-shaped block, a driving mechanism arranged on the U-shaped block and a second brake assembly arranged on the driving mechanism, and the U-shaped block is inverted U-shaped; the second brake assembly comprises double-cylinder friction mechanisms and single-cylinder friction mechanisms which are simultaneously arranged on the output end of the driving mechanism, an E-shaped block is arranged on the double-cylinder friction mechanisms, and the lower middle part of the E-shaped block is slidably connected with the upper end of the single-cylinder friction mechanisms; the blocking mechanism is used for blocking the E-shaped block, so as to block the movement of the double-cylinder friction mechanisms and make the single-cylinder friction mechanisms be able to be compressed on both sides of the brake disc; air inlet mechanisms and air outlet mechanisms are arranged on the upper end of the E-shaped block, and a first air outlet groove for air outlet is arranged on the blocking mechanism. The application has the advantages of high-efficiency heat dissipation, adjustable composite brake mode, low abrasion and buffering and damping.