71results about How to "Increase stretch length" patented technology

The invention relates to a construction method for roadbed filling and a device thereof, which belong to the technical field of roadbed filling. The device comprises a body; a cross beam is arranged on the body; a shovel blade is arranged under the cross beam; the shovel blade comprises a first scraper and a second scraper arranged and fitted in parallel to the first scraper; a first sliding chuteand a second sliding chute which are perpendicular to the cross beam are formed on the cross beam; a first slider which is connected in the first sliding chute in a sliding manner is arranged on thefirst scraper; a second slider which is connected in the second sliding chute in a sliding manner is arranged on the second scraper; the first slider and the second slider are respectively located atthe middle parts of the first scraper and the second scraper; and fixtures used for respectively fixing the first slider and the second slider to any position in the first sliding chute and the secondsliding chute are arranged on the first sliding chute and the second sliding chute. By driving the first scraper and the second scraper to get close to or away from each other, the length of the whole shovel blade is adjusted, thereby being suitable to the leveling operation of roadbeds with different widths, improving the efficiency in roadbed leveling and saving the cost.

The invention discloses a long bone fracture repositioning device, which comprises a proximal end support frame, a distal end support frame, quick drawing extension rods, steel needle fixing clamps and steel needles, wherein the quick drawing extension rods are connected between the proximal end support frame and the distal end support frame, the steel needle fixing clamps are connected to the proximal end support frame and the distal end support frame, the steel needles are clamped by the steel needle fixing clamps, the proximal end support frame and the distal end support frame are same in structure and respectively comprise a transverse chute type repositioning slide plate and two fixed gliding hole plates which are connected to the chute type repositioning slide plate, one surface of each chute type repositioning slide plate is provided with a transverse guide sliding chute, a transverse guide long hole is formed between the bottom of the guide sliding chute and the other surface of the chute type repositioning slide plate, the fixed gliding hole plates are provided with holes for connecting the steel needle fixing clamps, the fixed gliding hole plates are further provided with positioning bulges which are matched with the guide sliding chutes and can slide along the guide sliding chutes. The long bone fracture repositioning device disclosed by the invention is simple in structure, the minimally invasive idea is enhanced, the excellent rate of repositioning is improved, and requirements of fracture repositioning and various malformation correcting can be met to the maximum extent.

The invention belongs to the technical field of hand rehabilitation and flexible robots, and discloses a flexible actuator based on an optical fiber bending sensor. The flexible actuator is a cylinder-like body with a corrugated structure on the surface, and comprises a silica gel shell, two cavity mechanisms and the optical fiber bending sensor, wherein the cavity mechanisms and the optical fiberbending sensor are arranged in the silica gel shell; each cavity mechanism is semi-cylindrical and comprises a silica gel cavity, corrugated folds are formed on the portion, far away from the opticalfiber bending sensor, of the surface of the silica gel cavity, and Kevlar fiber wires are spirally wound around the largest part of the corrugated folds; and the optical fiber bending sensor comprises a PMMA plastic optical fiber, when the surface of the PMMA plastic optical fiber is subjected to pressure, axial deformation generated on the PMMA plastic optical fiber is larger than radial deformation, so that the optical fiber bending sensor is not influenced by the pressure when bending measurement is performed. Without being affected by the pressure, the flexible actuator improves measurement accuracy and has good flexibility.

The invention provides a retractable supporting structure and a hospital bed lifting mechanism. The retractable supporting structure comprises a plurality of groups of scissor supports which are arranged along a first direction, and a lead screw driving mechanism which is used for controlling the groups of scissor supports to retract in the first direction, wherein the groups of scissor supports comprise at least one group of scissor supports; on supporting rods of the group of scissor supports, the distance from a connection point between two supporting rods to one end of each supporting rod is greater than the distance from the connection point to the other end of each supporting rod; a nut or a motor of the lead screw driving mechanism is located on the group of scissor supports; the ends, closer to the connection point between the two supporting rods of the group of scissor supports, of the supporting rods of at least one group of scissor supports are located on both sides of a connecting wire of the nut and the motor respectively. Compared with an existing retractable supporting structure, the retractable supporting structure has the advantages that the nut on a lead screw is capable of increasing the retracting stroke of the scissor supports under the condition that the moving distances are the same.

The invention discloses screening of SNP (Single Nucleotide Polymorphism) related to sheep wool traits and an application and belongs to the technical field of livestock marker assisted selection seedling. The sheep wool traits are analyzed and predicted with the SNP markers, and the total DNA of different sheep individuals is subjected to PCR (polymerase chain reaction) amplification with primers shown in SEQ ID NO: 2 and 3 or primers shown in SEQ ID NO: 4 and 5; products of the PCR amplification are subjected to SNP detection, bases in the 336th position, the 513rd position and the 572nd position from the 5' end are determined to be C or T, and the wool tensile length of the individuals containing CC and CT genes formed through mutation in the 336th position is remarkably increased; the wool yield and tensile length of the N haplotype homozygous type NN or heterozygous type NM individuals formed by TT in the 513rd position and the 572nd position are remarkably larger than those of the M haplotype homozygous type MM individuals. The SNP markers can be adopted as diagnostic markers for early breeding of superfine fine-wool sheep and can shorten the variety breeding period, reduce the degree of dependence on progeny testing, reduce the conventional breeding cost and accelerate the breeding process.

The invention discloses a talipes equines orthosis. The talipes equines orthosis consists of a bone fixation support, a steel needle fixing clamp and a steel needle clamped in the steel needle fixing clamp, wherein the bone fixation support comprises a tibial hole full ring arranged on the middle segment or upper segment of a tibia, a calcaneal C-type hole ring arranged on the middle segment of a calcaneus, a metatarsal proximal C-type hole ring arranged at the promxial position of a metatarsus, and a metatarsal distal C-type hole ring arranged at the distal position of the metatarsus. The talipes equines orthosis solves the technical problem that traditional talipes equines orthoses used for correcting talipes equines have difficulty in meeting the orthosis and treatment needs of talipes equines. The talipes equines orthosis has the advantages that the operation is convenient and safe, the structure is simple and ingenious, an operation is guaranteed to be finished under the microinvasive or noninvasive condition, the damage to the local soft tissue injury and blood supply is avoided to the greatest extent, the fracture healing and function reconstruction are facilitated, the curative effect is high, and the complication is low.

The invention discloses a sofa extension support and a sofa. The sofa extension support comprises a base, extension assemblies and a seat frame, wherein the extension assemblies are connected with thebase; each extension assembly comprises a side plate, a leg mechanism and a support assembly, wherein the leg mechanism comprises a connecting rod assembly and a main foot rest piece which are connected by six connecting rods in a crossed mode, and the connecting rod assembly drives the main foot rest piece to stretch or retract; the seat frame is arranged on the side plates, and the height fromthe highest point of the seat frame to the ground is smaller than 28 cm. The extension length and height of the connecting rod assemblies are increased, the distance between the connecting rod assemblies and the ground is larger in the moving process, the distance between the seat frame and the ground is smaller, and comfort is higher after soft packing.

The present invention relates to a telescoping operating arm, an operating device and an injection moulding device, wherein the operating arm (20) of the operating device (10) used for the injection moulding device comprises a first branch arm (1) and a second branch arm (2), the first and second branch arms and at least two guide blocks traveling on at least two guide rails (3, 4) can move through the at least two guide rails (3, 4), the guide block (5) arranged on the first branch arm (1) can travel on the guide rail (4) arranged on the second branch arm (2), the guide block (6) arranged on the second branch arm (2) can travel on the guide rail arranged on the first branch arm (1), and the guide block (5) arranged on the first branch arm (1) partially and preferably covers the guide block (6) arranged on the second branch arm (2) in a vision line (L) vertical to the orientation of the guide rails (3, 4), under the stretching state of the branch arms (1, 2).

The invention provides a sweeping device for a road sweeper and a sweeping method. The sweeping device (1) comprises a shoveling portion (2), a sweeping portion (3) and a spraying portion (4). The shoveling portion (2), the sweeping portion (3) and the spraying portion (4) are connected to a connecting shaft (1-1). The sweeping device has the beneficial effects that the sensitivity is enhanced, the sweeping effect is good, the sweeping range is wide, and the dismounting and mounting are convenient.

The invention discloses a conveying track for vacuum packaged snack processing and an application method thereof. The conveying track comprises a first guide rail body, wherein a second guide rail body is arranged on the right side of the first guide rail body, a plurality of groups of auxiliary sleeve rollers are mounted in parallel between the first guide rail body and the second guide rail through a left arm insertion rod and a right arm insertion rod, and telescopic connecting rods are mounted in the middle positions of the inner sides of the auxiliary sleeve rollers. The conveying track can expand the effective transportation area of the conveying track, so that a local choking phenomenon as a result of relative more packaging bags can be avoided and the total transportation amount ofthe conveying track can be further effectively improved, and the transportation efficiency is improved. The conveying track is simply assemble and disassembled, convenient to dissemble packages and transport in a long distance. The conveying track can be adjusted according to specific transportation height to sit snack processing equipment of different models. The conveying track corresponds to the heights of outlets of different snack equipment, so that snack damage and fall due to a relatively large drop between the snack outlet and the conveying track is avoided.

The invention discloses a film transverse stretching device for a slit type air port plenum chamber. One slit type air port plenum chamber is respectively arranged in each of drying ovens 2-7 at a stretching section; air ports of the slit type air inlet plenum chambers are upper and/or lower linear slit air ports; angles alpha between the slit air ports and a film advancing direction are 20-80 degrees, content of a film solvent at an inlet of each drying oven is gradually reduced, and the angles alpha are increased. The length of the slit air ports is L*Sin alpha greater than or equal to the width of a stretched film. Adjacent slit type air port plenum chambers are connected end to end, an angle of intersection of two slit air ports is 30-150 degrees, and an end-to-end distance between adjacent slit type air port plenum chambers is 0-50mm. The width of the slit air ports is 0.5mm-20mm. A hot air temperature of the slit air ports is 130-300 DEG C. When the film in the device moves forwards, each point of the cross section of the film is stretched, hot air of the slit air ports is focused on an inclined line, and temperature at a heated part is uniform and stable, so that the film thickness uniformity is improved to 2.0%, and the mechanical properties and the film surface quality are improved.

The invention discloses a seat stretching device capable of being extended and stretched. The seat stretching device comprises a base, a linkage mechanism, a linkage side plate, a leg mechanism, a backrest mechanism, a transmission mechanism and a driving mechanism. The transmission mechanism comprises a bracket assembly, a transmission shaft and a transmission connecting rod assembly, the end part of the transmission shaft is in transmission connection with the leg mechanism through the transmission connecting rod assembly, one end of the bracket assembly is connected with the middle part of the transmission shaft, and the other end is connected to the driving mechanism; the driving mechanism comprises a driving motor, a sliding rail and a sliding block, the sliding rail is parallel to the horizontal plane, and the sliding block is connected with the transmission shaft through the bracket assembly; and when the leg mechanism and the backrest mechanism are driven from a contraction position to a limit position of complete stretching, the sliding stroke of the sliding block is 26-33 cm. The driving process of the driving mechanism is more stable and smoother, the pushing precision and pushing efficiency are improved, and the comfort of the seat is improved.

The invention relates to a footrest extension mechanism and a seat telescopic device. The footrest extension mechanism comprises a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a first footrest piece, a linkage rod, a second footrest piece and a footrest connecting piece, one end of the second connecting rod is hinged to the first footrest piece, the other end of the second connecting rod is hinged to the first connecting rod, the first connecting rod is used for being hinged to a linkage support of a seat, one end of the fourth connecting rod is hinged to the second footrest piece, the other end of the fourth connecting rod is hinged to the third connecting rod, the first footrest piece is hinged to one end of the linkage rod, and the other end of the linkage rod is hinged to the middle of the fourth connecting rod; one end of a first connecting piece of the footrest connecting piece is hinged to the middle of the second footrest piece, the other end of the first connecting piece is hinged to one end of a second connecting piece, the other end of the second connecting piece is hinged to the middle of a second connecting rod, and the middle of the second connecting piece is hinged to the middle of a fourth connecting rod. The footrest extension mechanism is advantaged in that adjusting flexibility of the footrest extension mechanism can be improved, and the extension length of the footrest extension mechanism can be increased.

The invention relates to a fecal suction truck solid-liquid separation device. The device comprises a tank, a feces storage bucket is arranged on the tank, water outlets are densely formed in a bucketbody of the feces storage bucket, a water outlet and a residue outlet are formed in the tail end of the tank, and the feces storage bucket is communicated with the residue outlet; the device is characterized in that a multistage telescopic oil cylinder and an extrusion oil cylinder are arranged on the two sides of the feces storage bucket respectively, the multistage telescopic oil cylinder is located in the tank, the extrusion oil cylinder is located outside the tank, an extrusion plate is connected to pistons of the multistage telescopic oil cylinder and the extrusion oil cylinder and located in the feces storage bucket, and the diameter of the extrusion plate is equal to the inner diameter of the feces storage bucket. Accordingly, the solid-liquid separation effect is good, the failurerate is low, the energy consumption is low, the labor intensity of workers can be greatly lowered, and the application range is wide.

The invention relates to a shed (10) for a transition portion device between two hinged vehicles or vehicle portions or the shed (10) for a plane boarding bridge or a plane passenger gangway ladder. The shed (10) is designed to be in a tunnel shape and is provided with a plurality of shed frames (13) which are successively arranged. A first strip (23) and a second strip (25) which are made of folding shed materials are arranged between the shed frames (13). At least one side of the second strip (25) made of the folding shed material is firmly grasped by folding shed contouring parts (18). The folding shed contouring parts (18) are received by the shed frames (13) in a dismounting and loosening manner.

The invention relates to a thermoplastic elastomer of hydropolymer and a method for preparing the same. The thermoplastic elastomer is mainly applied to aerospace sealing and sealing and shockproof protectors in the fields of electronics, electric power, energy, communication and the like. For the thermoplastic elastomer, the polymer molecular weight is between 100,000 and 500,000, the S-EEP-S three-block structure is adopted, wherein S is a polystyrene section, EEP is an alkadiene section, the melting-contact point is more than or equal to 230 DEG C, the tearing strength is between 40 and 70Ma, the breaking elongation is between 1,500 and 1,900 percent, and the deformation rate is less than or equal to 2 percent; the elastomer can resist acid, alkali and temperature, the temperature resistant range is that the high temperature is 80 DEG C, and the low temperature is 40 DEG C below zero; moreover, the elastomer can shield ultraviolet rays, the anti-ageing capability is 10 years, and the toughness and the strength ISO37 are 10 times of 3MPa.

The invention discloses a high strength non-woven adhesive tape and a preparation method thereof. The non-woven adhesive tape is composed of the following raw materials in parts by weight: 40 to 60 parts of butadiene, 20 to 30 parts of styrene, 10 to 20 parts of polyester fiber, 10 to 30 parts of butyl acrylate, 10 to 20 parts of acrylic acid, 0.1 to 0.8 part of dibutyl phthalate, 2 to 8 parts of benzoyl peroxide, 5 to 10 parts of rosin, 1 to 10 parts of carboxylic acid, 2 to 6 parts of emulsifier, 0.1 to 1 part of dispersant, 0.05 to 0.15 part of stabilizing agent, 1 to 5 parts of reinforcing agent, and 100 parts of water. The properties of the non-woven latex are stable. The bonding force is strong. The thermal stability of the latex is stable. The color is not changed after 24 hours of reflux at a temperature of 50 DEG C. No gel is generated. The freeze-thaw stability is high. The non-woven adhesive tape is thawed after 50 days of freezing at a temperature of -20 DEG C, the color is not change, no gel is generated, and the requirements on production, storage, and transportation in different seasons can be met. The preparation method is simple. The non-woven adhesive tape prepared from the latex has the advantages of high tensile strength and high elongation at rupture and is resistant to cracking.

The invention discloses a flexible pneumatic capturing mechanism for capturing a non-cooperative target in a space, and belongs to the technical field of capturing systems for the non-cooperative target in the space. According to the flexible pneumatic capturing mechanism, the front end extends to be close to a non-cooperative target, and the tail end captures the non-cooperative target. The main air bag is a main body part of the stretching mechanism and can be unfolded and stretched after being inflated, the auxiliary air bag is a steering control part of the stretching mechanism, the two ends of the main air bag and the auxiliary air bag are connected with end covers, the end cover located at the tail end is connected with a capturing satellite, and the end cover located at the head end is used for installing a capturing device. The flexible protection cover is arranged between the two end covers and used for covering the outer sides of the main air bag and the auxiliary air bag. The unmanned aerial vehicle has the advantages of low control requirement on a capture satellite, light weight, small loading volume, no need of a thermal insulation system, high safety, multi-arm coordination, simple structure, low cost and strong structural designability.