38 results about "Round back" patented technology

A probe for engaging a conductive pad is provided. The probe includes a probe contact end for receiving a test current, a probe retention portion below the contact end, a block for holding the probe retention portion, a probe arm below the retention portion, a probe contact tip below the arm, and a generally planar self-cleaning skate disposed perpendicular below the contact tip. The self-cleaning skate has a square front, a round back and a flat middle section. The conductive pad is of generally convex shape having a granular non-conductive surface of debris and moves to engage the skate, whereby an overdrive motion is applied to the pad causing the skate to move across and scrub non-conductive debris from the pad displacing the debris along the skate and around the skate round back end to a position on the skate that is away from the pad.

Provided is an electrically powered wheelchair capable of stably walking on a staircase and a flat ground. The electrically powered wheelchair consists of a seat, a controller, a frame, a front wheel, a similar Archimedes helical line impeller conversion mechanism, a transformable back wheel, a motor and a small front wheel auxiliary caterpillar band. The similar Archimedes helical line impeller conversion mechanism consists of a planet wheel mechanism, a clutch and a telescopic support rod. The planet wheel mechanism consists of four planet gears, a sun wheel and a planet carrier and is connected with the transformable back wheel. The transformable back wheel consists of four sections of circular arc wheel flanges capable of respectively being screwed open towards the outer sides of the wheel flanges and arc-shaped rod hubs, wherein the four sections of circular arc wheel flanges form a complete round back wheel flange, and the circular arc wheel flanges and the arc-shaped rod hubs form four wheel blades completely identical in structure. Each arc-shaped rod hub is fixedly connected with the corresponding planet wheel and connected with the planet carrier through a hinge. The electrically powered wheelchair capable of stably walking on the staircase and the flat ground is simple in structure, high in energy efficiency, stable in motion, conformable in riding and capable of being applied to daily family life of disabled people and old people.

The invention provides a cluster head selection method, a cluster head selection system and a multi-hop network. The cluster head selection method comprises that each node sends its own energy information to a base station; the base station calculates network average energy and a cluster head selection threshold value of this round according to the energy information sent by each node and transmits the network average energy and the cluster head selection threshold value of this round back to each node; each node determines whether to enter a dormant state or not in the cluster head selection process of this round according to a first ratio of the current self energy to the network average energy; the nodes not entering the dormant states generate random numbers between 0-1 and judge whether the ratios of the random numbers to the first ratios are less than a threshold value or not; and if the ratios of the random numbers to the first ratios are less than the threshold value, the nodes are selected as the cluster head nodes. According to the cluster head selection method, the cluster head nodes are selected according to the surplus energy, and the energy distribution of the whole network is more uniform; moreover, through adoption of a dormant mechanism related to the surplus energy of the nodes, the survival time of the nodes is prolonged; and the survival time of the whole network is prolonged.

The invention relates to a movable cover board carding device for a cotton carding machine, which comprises a cylinder, a guide rail, a movable cover board, a driving wheel, a driven wheel, a tensioner and a transition wheel. The guide rail is fixedly arranged on a surface plate of the cylinder; the movable cover board comprises a cover board skeleton, cover board hinge pins, fixing blocks and bearing rolling sleeves; the cover board hinge pins are fixedly connected to both ends of the bottom of the cover board skeleton; the cover board hinge pins are sleeved with the fixing blocks; hinge pin holes on the fixing blocks are provided with limiting grooves; the positions of the two limiting grooves are staggered along the axial directions of the hinge pins; the cover board hinge pins in the limiting grooves are sleeved with the bearing rolling sleeves; the bearing rolling sleeves are in rolling contact with the guide rail; the driving wheel and the driven wheel are arranged in round backs at both ends of the movable cover board; and the tensioner and the transition wheel are arranged at the horizontal end of the movable cover board. Due to adoption of the structure, the distance between the movable cover board and the cylinder is stable; the movable cover board carding device is reliable to operate; maintenance cost is reduced; labor intensity is reduced; the device has superior stability in the actual operating process; a small number of neps and cotton impurities in generated cotton slivers are generated; and the cotton slivers have high fiber quality.

The invention provides processing equipment for a curve component and a processing method of processing equipment. The processing equipment is characterized by comprising a rack, wherein a longitudinal moving device and a transverse moving device are arranged on the rack; a transverse moving bracket is arranged on the transverse moving device; a drive device, an active device, a first driven device and a second driven device are arranged on the transverse moving bracket; the drive device is connected with the active device; one side of the active device is equipped with the first driven device; the other side of the active device is equipped with the second driven device; the active device drives the driven device to rotate through a component; and a sanding device for a cutting device isfurther arranged on the rack. The processing equipment for the curve component provided by the invention effectively solves the component processing problems that Ming-style round-backed armchair handrails are arc-shaped, sections are required to be normally circular and diameters are inconsistent, and can process the components with circular or oval sections, the components of different diametersand the components with arc-shaped or S-shaped side surfaces.

The invention relates to a floating type double-layer back plate brake pad which is characterized by comprising a pad thick back plate, a pad thin back plate, a dovetail element, a plurality of pad friction blocks and a plurality of elastic pads. The pad thick back plate is of an arc-shaped semi-sole structure; the elastic pads are provided with spherical supporting faces; the pad friction blocks are provided with spherical supporting faces and fastening connecting elements; the elastic pads enable the friction blocks to be adjusted in an elastic mode in the vertical direction relative to the pad thick back plate and the pad thin back plate; the spherical supporting faces of the elastic pads and the spherical supporting faces of the friction blocks can rotate; the friction blocks are cylindrical, and mutual positioning of the friction blocks in an installation plane is achieved in the circumference direction by means of three evenly distributed convex keys on a round back plate and three evenly distributed key grooves in the pad thin back plate. Compared with an existing structure, in braking of a train, the maximum contact friction area can be obtained due to pads and a brake disc, braking is stable, the functions of damping, shock absorbing, denoising, heat dissipation and the like are achieved, the friction blocks and the elastic pads can be replaced, train operation cost is reduced, and the floating type double-layer back plate brake pad can be widely applied to braking systems of high-speed trains.

The invention provides a bed on which a patient and so forth can take a posture for sitting on a chair, in particular, a bed for allowing the posture for sitting on a chair to be taken, effectively usable even by those having the back in the shape of the round back, Kyphosis or the like.

The embodiment of the invention discloses a chair. A plurality of chairs can be folded up due to acute angles formed among chair legs, thus a plurality of chairs can be stacked, and further the convenience of round-backed armchairs can be realized. The chair comprises a chair ring, a chair back, a chair seat and chair legs; the chair ring mainly comprises at least one cross rod, two arm rods and at least two curved rods, and the cross rod, the arm rods and the curved rods are connected by mortises and tenons; the middle part of the cross rod is provided with a first mortise, and the first mortise is matched with a first tenon which is arranged on the top of the chair back for mortising connection; a second mortise is arranged at the connection part of the chair seat and the bottom of the chair back, and the second mortise is matched with a second tenon which is arranged at the bottom of the chair back for the mortising connection; the side part of each chair leg is provided with a third tenon, and each third tenon is matched with each third mortise which is formed at the bottom of each arm rod for the mortising connection; two of the four chair legs are arranged on the left side, and the other two chair legs are arranged on the right side; the chair legs are connected with the third mortises; and the acute angles are formed between the two left chair legs and the two right chair legs.

The invention discloses a method for improving the photoperiod sensitivity of a tropical maize germplgasm yellow grain Tuxpeno. The method comprises the following steps: improving the photoperiod sensitivity of a tropical maize germplgasm yellow grain Tuxpeno B.P.C.15 by using a temperate specially-early mature dent maize germplgasm LM2, adopting a breeding selection method including processes of performing hybridization, mixed pollination, two-round back-crossing and continuous three-generation selfing, performing growth period and plant height selection as well as combining ability early generation test, and synchronously performing photoperiod sensitivity identification in a plurality of places in a tropical zone, a subtropical zone and a temperate zone, and especially continuously performing two rounds of back-crossing by taking the temperate specially-early mature dent maize germplgasm LM2 as a back-crossing parent so as to ensure that the proportion of a temperate maize germplasm can be increased, and a maize selfing line which takes a temperate maize germplasm background as the main and integrates the tropical germplasm characteristics and temperate germplasm advantages can be obtained. By adopting the method disclosed by the invention, the problem of photoperiod sensitivity commonly existing in a process of planting the tropical maize germplasm in a temperate area can be effectively solved; and the method also has important significance in promoting the northward migration of maize varieties in the tropical zone and the subtropical zone in China.

Garage Door Track Lock to prevent overhead opening garage door from opening. Lock with Z Flange is placed securely through garage door vertical track on one side with back plate and shackle inserted through lock cylinder on opposing side and is securely in place above roller. When the lock secured in this way it prevents garage door opening. Lock cannot be cut with bolt cutters or pried off. Garage Door will be able to open when lock is unlocked with a key. The lock uses a Z Flange welded on Master Lock M46XKAD (or equivalent) and a round back plate is welded to the Master Lock shackle.

The invention provides a copying mechanism and a method for manufacturing a curved component through same. The copying mechanism comprises a rack and a control box, wherein a cutting device and a copying die device are arranged on the rack; a longitudinal moving device and a transverse moving device are arranged on the rack; at least one first active device, a second active device, a first slave device and a second slave device are arranged on the transverse moving device. According to the copying mechanism of a woven curved component, the problems of processing of arc-shaped components, components with regular circular sections, and components with different diameter, such as armrests of Ming style round-backed armchairs, can be effectively solved; one sample can be manufactured as a model for realizing massive copying of the component components with circular or elliptic sections, the components with different size, and the components with arc-shaped or S-shaped side surfaces; and the copying mechanism fills the gap of wood-working machines.

The invention provides a material breakage emergency device of a belt material processing production line, which is arranged between a material frame and a subsequent processing device during usage and is used for conveying the belt material to a processing device after the subsequent processing device tows the belt material to pass through; the device comprises a detecting device used for detecting whether the belt material is in a state, a pressing device used for pressing the belt material in the case of material breakage and a material storage device, which are sequentially arranged during usage; the material storage device comprises a front wheel set and a rear wheel set, which are used for driving the belt material to repeatedly round back and forth, wherein the front wheel set is fixedly arranged, and the rear wheel set is movably arranged; and when a coiled belt material is used up and necessary to be changed or a breakage occurred at the middle of the belt material, the production line needs no pauses, thereby greatly reducing the product rejection rate and improving the production efficiency.

The invention relates to a lower cavity and a cavity for a food rubbish treatment machine. The lower cavity comprises a cylindrical side wall and a lower round back cover which are connected into a whole, wherein the middle of the back cover is provided with a shaft hole; the side wall of the shaft hole is provided with a discharging pipe; the inner surface of the discharging pipe is connected with the bottom surface of the back cover into a whole through a transition curved surface; and the axis of the discharging pipe is arranged approximately parallel with the tangential direction of the side wall circumference surface. The cavity for the food rubbish treatment machine comprises an upper cavity and the lower cavity, wherein the upper and lower cavities are connected through a fastening piece and a sealing piece; the lower cavity comprises the cylindrical side wall and the lower round back cover which are connected into a whole; the middle of the back cover is provided with the shaft hole; the side wall of the shaft hole is provided with the discharging pipe; the inner surface of the discharging pipe is connected with the bottom surface of the back cover into a whole through the transition curved surface; and the axis of the discharging pipe is arranged approximately parallel with tangential direction of the side wall circumference surface. By the structure design of the lower cavity and the cavity, resistance is reduced, thereby avoiding blocking phenomenon.

The invention discloses a round rod back picture book. The round rod back picture book is applied to a picture album, a photo album, a picture book and a hardcover with inner pages adopting a non-opposite-mounting process, improves the attractive degree of products in the prior art, and solves the technical defect that a product in the prior art is not convenient to turn. The round rod back picture book comprises conventional double-side photocopy inner pages, a back cover formed in the manner that a hard plate is wrapped by leather, and a cover formed in the manner that a hard plate is wrapped by photo paper having photocopy content. The round rod back picture book is characterized in that an inner back of the product is composed of an open round rod and sealing caps at the two ends, anda round back is formed. The round rod back picture book has the main characteristics of being environment-friendly (the non-opposite-mounting process inner pages are arranged, and extremely small amount of glue and double-sided adhesive tape are used), attractive, and capable of facilitating turning enjoying.

The invention discloses a method for hotly rounding the middle back of an outer shell of a round back photo album. The method is characterized by comprising the following steps: (1) mounting, namely uniformly applying a layer of glue to the inner surface of the finished outer shell in an environment with the relative humidity of 60%-80% and the temperature of 20-25 DEG C, mounting a layer of lining paper on the glue, and controlling the humidity of the outer shell after mounting the lining paper to be 18%-20%; (2) pressing a round back, namely instantly arranging the middle back of the outer shell obtained in the step (1) into a base of a hot rounding mould supported by a soft buffer material, applying a pressure of 20-35 kgf to the hot rounding mould with the outer shell through a pressing head on hot rounding equipment to enable the middle back of the outer shell to form the round back, and meanwhile, setting the temperature of the pressing head to be 160-190 DEG C, controlling the action time of the pressing head to be 4-6 s and heating and shaping the round back formed by stamping to obtain a smoother round back. The method has the advantage that the smoother round back can be easily obtained by the method.