595results about How to "Strong rigidity" patented technology

The invention relates to a series-parallel industrial robot with five degrees of freedom, which has large working space and is highly flexible. The series-parallel industrial robot with five degrees of freedom is composed of a vertical rotational joint, a vertical lifting joint, a wrist joint with double rotational degrees of freedom, a parallel operation mechanism and a tail-end quick-change tool. The series-parallel industrial robot with five degrees of freedom has the advantages of compact structure, large working range, flexible posture adjustment, high degree of automation, relatively simple control and wide range of application and can realize various engineer operations such as carrying, spraying, assembly and the like.

The invention relates to an air floatation high-speed electric main shaft, in particular to an air floatation high-speed electric main shaft for a machining tool. A lower air bearing block assembly 7 is fixed on a thrust bearing 9, the upper part of the lower air bearing block assembly 7 is provided with a stator 6, the front end of a shaft core 5 is provided with a chuck accessory 11, an aluminum water jacket assembly 3 is fixed at the upper opening of a body assembly 10, and a tool changing cylinder assembly 1 is fixed on the upper part of the aluminum water jacket assembly 3; and the middle part of the shaft body of an upper air bearing 4 is provided with an upper air bearing cooling water passage 12. The main shaft is an electromechanical integrated base piece with high revolution number and high precision, has simple and compact structure, and is convenient to install, high in heat dissipation efficiency, multifunctional and convenient for popularization and application.

The invention discloses a device for accurately positioning intermittent joints of similar material rock mass samples. The bottom plate of the crack positioning bracket is arranged in parallel on both sides of the sample mold, and the anchor bolts of the crack positioning bracket are anchored on the sample preparation base plate. The crack positioning bracket It is connected with the bottom plate of the crack positioning bracket through threads, and the crack longitudinal positioning rods are respectively arranged parallel to the crack positioning bracket bottom plate and fixed on the four crack positioning brackets by screws. The slider of the horizontal positioning rod is stuck in the groove of the longitudinal positioning rod of the crack, and the angle positioning device is stuck in the groove at the lower end of the horizontal positioning rod of the crack through the square slider at the top, and the crack is made by the steel plate at the lower end of the angle positioning device. The structure is simple and the operation is convenient, which effectively guarantees the high-efficiency creation of fractures and the enrichment of fracture forms, which greatly facilitates the strength and deformation behavior tests of rock masses with different fractures, and quickly creates intermittent fractures with specified parameters.

An improved arrow shaft comprised of a core of substantially round, very lightweight, porous material, with the porous core having sections that have different diameters at various points along the length of the arrow shaft, with the lightweight core materials being overwrapped with different thickness' of reinforcing materials such that the resulting outside diameter of the finished arrow shaft has substantially parallel surfaces over the entire length of the shaft and the finished shaft has a substantially constant circumference and outside diameter along its entire length. The inventive composite arrow shaft incorporates different thickness' and weights of reinforcement materials, strategically placed along it's length, in a manner that results in providing, in an integral manner, proper front to back balance in the finished arrow, with the proper balance achieved by using the same weight point, point insert, nock, nock insert, and fletching materials, regardless of the length the shaft is cut off at. The preferred embodiment of the inventive arrow shaft includes end sections at each end that have greater thicknesses of reinforcement materials overlaying the core, than at other intermediate sections of the shaft, with the increased reinforcement materials at each end of the shaft serving to increase, in an integral manner, the strength of the shaft in these areas. The preferred embodiment of the inventive arrow shaft also includes at least one other section intermediate the end sections of the shaft that also has greater thicknesses of reinforcement materials along it's length than do some other sections of the shaft that are intermediate the additionally-reinforced end sections.

The invention provides a flexible display screen and a terminal comprising the same. The flexible display screen comprises a display layer and a supporting layer, wherein the supporting layer is located on the back face of the display layer so as to improve the rigidity of the display screen; the supporting layer comprises one or more bent areas and one or more non-bent areas; and the bent areas can be bent or curved relative to the non-bent areas so as to enable the supporting layer to be bent or curved. The flexible display screen has the high rigidity, when the display screen is folded or curled, bending can be conducted at the certain radian, folds or arches or creases caused by folding or curling are avoided, and the visual experience of a user is improved.

The invention discloses a compound containing aza-spirofluorene and nitrogen six-membered heterocycle and application of the compound to an OLED (Organic Light Emitting Diode). The compound contains an aza-spirofluorene structure and an aza-six-membered heterocyclic structure; in addition, at least one N is arranged on the spirofluorene structure; and both two groups are strong electron groups, have deep HOMO energy level and high electron mobility, and are suitably used as a hole-blocking material or an electron transport material. A structure containing a hole group of the compound disclosed by the invention can balance electrons and holes of the material, so that the material can be used as a main body material of a partially-electronic luminescent layer; besides, the compound disclosed by the invention has higher group rigidity and has the characteristics of low possibilities of intermolecular crystallization and aggregation and high film-forming property; the compound serving as an organic electroluminescence functional layer material is applies to an OLED device; current efficiency, power efficiency and external quantum efficiency of the device are greatly improved; and besides, the service life of the device is obviously prolonged.

The invention relates to the field of robots, and discloses a rope driving-based quickly-replaced linkage flexible charging robot. The rope driving-based quickly-replaced linkage flexible charging robot comprises linkage joint sections, driving ropes, a driving module and an end actuation device, wherein the linkage joint section comprises a plurality of sub joints connected in series with one another; the sub joints are connected in a rotatable manner; the multiple linkage joint sections are connected in series; every two linkage joint sections are connected in a rotatable manner; all the linkage joint sections are fixedly connected with the driving ropes; the driving ropes drive all the sub joints in the linkage joint sections to rotate in the same direction and same angles under the driving of the driving module; and the driving ropes and the driving module can be separated. Compared with the prior art, the rope driving-based quickly-replaced linkage flexible charging robot has the advantages that the use quantity of motors and the mass of a mechanical arm can be reduced, so that the response speed can be increased; by the adoption of a joint linkage scheme, the joints in the joint sections are connected together through a linkage mechanism to realize equal-curvature and isodirectional joint motion; and the mechanical arm is high in rigidity, high in load capacity and high in end precision.

The five freedom numerically controlled milling machine is superior to available one, which has inconvenient manufacture and installation, complicated programming, and other demerits. The five freedom numerically controlled milling machine consists of a bed, a platform pedestal, a machining tool and a main electric shaft to control the machining tool, as well as a three freedom RPS mechanism. The three freedom RPS mechanism consists of a lower platform, a moving platform and telescopic rods comprising lead screw and nut mechanism, and each of the three telescopic rods has its ends hinged separately to the lower platform and the moving platform. The milling machine of the present invention has high rigidity, high precision, simple and symmetrical structure, low cost, simple manufacture and installation, high machine accuracy and convenient programming.

The invention provides an automobile front floor framework structure, which has strong integral rigidity, can reduce the compression amount of the living space of passengers when colliding, and protects the safety of the passengers. The automobile front floor framework comprises a framework structure which is in a shape like a Chinese character 'mu' and is formed by overlapping a front beam, a left longitudinal beam and a right longitudinal beam, a left door sill inner plate and a right door sill inner plate as well as a rear beam, wherein the front part of the front beam is overlapped with the left and the right front longitudinal beam, the key point is that the invention further comprises a left middle longitudinal beam and a right middle longitudinal beam as well as a middle beam arranged between the front beam and the rear beam, the front ends of the left and the right middle longitudinal beams are respectively overlapped with the front beam or the left and the right longitudinal beams, and the rear ends thereof are respectively overlapped with the rear beam; and the middle beam is respectively overlapped with the left door sill inner plate, the left longitudinal beam, the left middle longitudinal beam, the right middle longitudinal beam, the right longitudinal beam and the right door sill inner plate along the left and the right directions of a vehicle body. The invention adds the left and the right middle longitudinal beams and the middle beam, effectively enhances the framework, can better absorb the collision energy during the processes of front side collision and side collision, reduces the compression amount of the living space of the passengers, and protects the safety of the passengers.

The invention discloses a dual-redundancy electric steering engine which is composed of two motors, a planetary gear transmission reducing mechanism, a planetary pin roller lead screw pair and a sleeve push rod; the working principle of a planetary differential gear train is utilized to transmit movement from the two motors to the sleeve push rod through driving the planetary pin roller lead screw pair by the planetary gear transmission reducing mechanism, and rotary movement of a lead screw is converted to straight reciprocating motion of the sleeve push rod through revolution and rotation of a pin roller. The dual-redundancy motors and the planetary pin roller lead screw pair are adopted for driving to realize large stroke and ensure straight line actuation property of an actuator; the planetary pin roller lead screw pair has the characteristics of high carrying capacity and accurate positioning of reciprocating motion; when one motor breaks down, the other motor can still drive a system to act normally so as to improve the reliability of the system; when the two motors work normally, power confluence is realized to provide larger input power for the system; and the dual-redundancy electric steering engine is simple in structure, convenient to maintain and excellent in speed regulation property.

The invention discloses a horizontal type six-shaft parallel-serial computer numerical control milling machine, and relates to machining tools for large workpieces with complex curved surfaces. The horizontal type six-shaft parallel-serial computer numerical control milling machine is provided with a base, and a Y-direction slide platform, a Z-direction slide platform and an X-direction slide platform are mounted on the base through rails in sequence. A Y-direction drive motor is arranged on the base, and the Y-direction drive motor is connected with a Y-direction drive screw rod and drives the Y-direction slide platform to move in the Y direction. A Z-direction drive motor is arranged on the Y-direction slide platform, and the Z-direction drive motor is connected with a Z-direction drive screw rod and drives the Z-direction slide platform to move in the Z direction. An X-direction drive motor is arranged on the Z-direction slide platform, and the X-direction drive motor is connected with an X-direction drive screw rod and drives the X-direction slide platform to move in the X direction. An RPS parallel mechanism with three degrees of freedom is arranged on the X-direction slide platform, and a machining tool is mounted at the executing end of the parallel mechanism. The horizontal type six-shaft parallel-serial computer numerical control milling machine has the advantages of being large in working space, good in stiffness property, low in cost and high in machining accuracy. Further, the horizontal type six-shaft parallel-serial computer numerical control milling machine can be used for large stroke machining in the Y direction.

The invention provides a valve grinding and maintaining machine tool which is provided with a worktable; columns are respectively arranged on two sides of the worktable; the upper ends of the two columns are connected through a lifting cross beam; a lifting motor is connected with a lifting screw rod; and a tool fixture is arranged on the worktable. The valve grinding and maintaining machine tool is characterized in that column sleeves are respectively sleeved on the two columns, and connected through a back plate; the lower end of the lifting screw rod is screwed into a lifting nut fixed on the back plate; a box body is arranged on a support arm on the back plate; a transmission motor is arranged above the box body; a shaft of the transmission motor is connected with a transmission shaft passing through the box body; and a grinding mechanism is connected with the lower end of the transmission shaft fixedly and rigidly. The valve grinding and maintaining machine tool has the advantages that the bearing load is large, the rigidity is high, the strength is high, the stack welding repair is conducted to a valve sealing surface, and the process from stack welding coarse grinding to fine grinding is completed.

The invention discloses a computer-controlled servo 3D bayonet tufted carpet machine which comprises a group of front and rear racks which stand opposite to each other, wherein the front rack is provided with a cloth locking mechanism for supporting and binding the corners of carpet base cloth, and the rear rack is provided with a displacement mechanism; a tufting head is arranged on the displacement mechanism towards the front rack, and the touch surface of the tufting head involves the whole region in the front rack under the condition that the tufting head is driven by the displacement mechanism. The rack is vertically arranged and is divided into two, and the rack is flexibly arranged and is convenient to move; the whole size of the rack is not changed, but a large part of space is occupied aloft, and the landing area is smaller. Only one tufting head can move and tuft in the whole range of the carpet base cloth, and is widely suitable for various different carpet twines, the speed is relatively high, the precision is improved, the details of the original carpet pattern is shown easily, the finished carpet pattern product is lossless, and more importantly, a carpet with a stereoscopic 3D effect can also be woven.

The invention relates to a special type heat exchanger, in particular to a tubular evaporator with a stripper unit, which is used for alkali recovery work in papermaking industry. The evaporator of the invention is arranged in the middle in a shell, namely the position of an axis, a central circulating tube of which an inlet is positioned at the lower part is fixed by an upper tube plate and a lower tube plate, the top part thereof is provided with a fluid dispenser, each heat exchange tube is arranged around the central circulating tube, the central circulating tube is fixed with the upper and the lower tube plates in a welding manner, the lower part of the shell is provided with a chamber which is connected with a steam inlet and provided with an expansion section, the lower chamber wall of the chamber with the expansion section is fixed with the lower tube plate, the lower part of the chamber with the expansion section is connected with a separating chamber in which a demister is arranged, and the lower tube plate is provided with a condense sewage outlet.

The invention belongs to the field of composite material forming and provides an automobile radiator crossbeam made of a fiber reinforced composite material and a manufacturing method thereof. The manufacturing method at least comprises the steps of 1, material selecting; 2, die cleaning; 3, layering; 4, die closing; 5, vacuum pumping; 6, resin injecting; 7, heating curing. The invention aims to obtain the automobile radiator crossbeam made of the fiber reinforced composite material which is of a fiber foam-cored sandwich structure and has the advantages of light weight and high rigidity.

This invention relates to a liner for a gas storage tank containing a polymer composition comprising: i. a polyamide A, and ii. a nucleating agent in an amount of at least 0.001 weight percent with respect to the total amount of the polymer composition, and iii. an impact modifier in an amount of at least 1 weight percent with respect to the total amount of the polymer composition. The invention also relates to a gas storage tank comprising a structural fiber composite comprising continuous carbon or glass fibers, as well as a method for preparing a liner by blow molding.

The invention discloses a polyethylene resin, which is prepared from the following components in parts by weight: 100 parts of linear low-density polyethylene, 0.1 to 0.3 part of nucleating agent HPN-20E, 0.05 to 0.1 part of antioxidant, 0.02 to 0.1 part of halogen absorber, and 0.05 to 0.10 part of rheology modifier. The linear low-density polyethylene is prepared by the following steps: preparing a Unipol gas phase technology polyethylene device; taking polyethylene gas with a volume percentage of 99.9% as the raw material, 1-butene as the co-monomer, hydrogen as the chain transfer agent, SLC-S as the catalyst, and aluminum diethyl mono-chloride and tri-n-hexyl aluminum as the co-catalyst; and carrying out gas phase polymerization to obtain the polyethylene resin; wherein the partial pressure of ethylene is 0.60 to 0.75 MPa, the mole ratio of hydrogen to ethylene is 0.100-0.225; and the polyethylene resin has the advantages of excellent rigidity and high transparency and can be used in the fields of film and injection molded products.

The invention discloses a platform type horizontal plane planar motion mechanism. The motion mechanism comprises a mechanism frame 14, a straight bearing 8, a roller bearing 15, a ball screw 11 and a swaying servo motor 20, wherein the mechanism frame is connected with an auxiliary trailer 10; an encoder 17 and a swaying frame 9 are connected with the mechanism frame 14 through the straight bearing 8 and the roller bearing 15 to form a swaying component; a composite bearing 12, a worm gear 13, a circumferential guide rail 6, a yawing servo motor 18, an encoder 19 and a connecting plate 5 are connected with the swaying frame 9 through the worm gear 13 to form a yawing component; the distance between a front connecting rod and a rear connecting rod 3 can be adjusted by a positive and negative screw 4; the lengths of the connecting rods 3 can be adjusted by a trapezoidal lead screw 7; and the upper ends of the front connecting rod and the rear connecting rod 3 are connected with the connecting plate 5, while the lower parts are connected with a joint 1, a force balance 2 and a ship model 16. A linear motion guide rail consisting of the straight line bearing and the roller bearing is adopted in the swaying component, so the swaying component has the advantage of high stability, large amplitude, and high precision. A rotary mechanism consisting of the composite bearing, the circumferential guide rail, the worm gear and a worm is used as the yawing moving component, so that the yawing moving component has the advantages of stable rotation, wide range of rotation angle, large torque, high self-locking property and high accuracy. The distance between the front connecting rod and the rear connecting rod and the lengths of the connecting rods are adjusted by using the positive and negative screw and the trapezoidal lead screw, so the mechanism has the advantages of convenience, accuracy and suitability for ship models with various specifications.

The invention relates to an automatic telegraph pole installing machine special for a power distribution network power transmission line. The automatic telegraph pole installing machine comprises a first walking frame, a second walking frame and a third walking frame, wherein a rod frame is welded to the upper end of the first walking frame and the upper end of the second walking frame respectively, and rod bodies are uniformly installed on the first walking frame and the second walking frame. A movable limiting mechanism is arranged on the second walking frame and the third walking frame respectively, fixed limiting plates are installed at the lower ends of the two movable limiting mechanisms, first driving mechanisms are installed on the fixed limiting plates, drive guiding mechanisms are installed at the upper ends of the first driving mechanisms, and the upper ends of the drive guiding mechanisms abuts against the lower end faces of the corresponding rod bodies. Hydraulic cylinders I are installed on the right sides of the upper end faces of the fixed limiting plates, and clamping and guiding mechanisms are installed at the top ends of the hydraulic cylinder I through flanges. The automatic telegraph pole installing machine can achieve a full-automatic telegraph pole installing function without manual operation and has the advantages of being simple and convenient to operate, low in labor intensity, high in installing speed, good in installing effect, high in working efficiency and the like.

The invention provides a rubber material formulation for a high fatigue resistant rubber diaphragm of an automobile brake chamber, which is mainly prepared by natural rubber (NR), styrene butadiene rubber (SBR), polybutylene terephthalate (PBT), vulcanizing agent, zinc oxides, stearic acid, anti-aging agent, dispersant, accelerant, carbon black, aromatic oil and white carbon black. The physical mechanical properties of the rubber diaphragm of the automobile brake chamber prepared by the rubber formulation all reach the novel standard drafted by the Society of Automotive Engineering (SAE) of America; the service life of a platform of the rubber diaphragm reaches over 2 million times; the platform has the advantages of high stress at definite elongation, strength and elongation property, compression fatigue resistivity, flexural deformation resistance and attrition resistance, and maintenance of small variation of the material characteristics within the wide use temperature between 55 and 100 DEG C when the material is used; and the service life of the platform is basically the same as that of an air brake assembly, and resource conservation is greatly promoted simultaneously, thereby realizing conversion of the platform from 'a wearing part' to 'a permanent part'.

The invention discloses a square high-load air spring. The square high-load air spring comprises a sac body, an upper snap ring, a lower snap ring, an upper cover plate, a lower cover plate, an upper limiting part, a lower limiting part and a plurality of connecting pieces, wherein the sac body is formed by vulcanizing a sac body rubber, a framework layer, an upper seam allowance steel ring and a lower seam allowance steel ring together; the upper cover plate and the lower cover plate are provided with grooves which are matched with the shapes of the upper seam allowance steel ring and the lower seam allowance steel ring of the sac body; the sac body is assembled on the upper and lower cover plates through the grooves; the upper seam allowance steel ring of the sac body is tightly pressed on the upper cover plate by the upper snap ring, and the lower seam allowance steel ring of the sac body is tightly pressed on the lower cover plate by the lower snap ring; the upper and lower snap rings are connected and fastened to the upper and lower cover plates through the connecting pieces; the upper and lower limiting parts are positioned in the sac body, the upper limiting part is connected to the upper cover plate through the connecting pieces, and the lower limiting part is connected to the lower cover plate through the connecting pieces; and an air hole and mounting holes are formed on the upper cover plate.