592results about How to "Not easy to rotate" patented technology

A positioning member is coupled to a mounting plate, which defines a plurality of holes for receiving screws for connection with an end of an external object. An upper adjustment nut sets a distance between a roller seat and the mounting plate and to provide a securing function by cooperating with a roller seat nut and a roller seat bolt. The mounting plate forms in a central portion thereof an elongate slot for slidably receiving a neck of the axle therein. The positioning member includes a plate-like body forming a straight slot and an inclined slot for leading the neck therein and is provided with a rivet or a resilient fork-like fastener at one side of the inclined slot opposite to the straight slot to be fit into the a positioning hole defined beside the elongate slot for serving as a rotational axis of the positioning member.

A pneumatic tire comprises a tread portion, a pair of sidewall portions, a pair of bead portions with a bead core therein, and a carcass ply extending between the bead portions through the tread portion and sidewall portions and wound around the bead core in each of the bead portions from the axially inside to the axially outside of the tire so as to form a pair of wound portions and a main portion therebetween, wherein the bead core has a cross sectional shape elongated in a direction substantially parallel to the bottom of the bead portion so that the width (WC) thereof measured in this direction is in a range of from 1.5 to 2.5 times the height (HC) thereof measured perpendicularly thereto, and the bead core is covered with a high modulus rubber layer having a complex elastic modulus E*1 of from 20 to 100 Mpa and a thickness t1 of from 0.5 to 3.0 mm.

The invention relates to a benzene-cored organic compound and application of the benzene-cored organic compound to OLED (organic light emitting diode) devices. The benzene-cored organic compound is high in glass transition temperature and molecular thermal stability, applicable in HOMO (highest occupied molecular orbital) and LUMO (lowest unoccupied molecular orbital) energy level and high in Eg, and through device structural optimization, can effectively improve the photoelectric performance of the OLED devices and prolong the service life of the OLED devices.

The invention relates to a boron-containing organic compound and application of the boron-containing organic compound to an OLED device. The structure of the compound is shown as a general formula (1), the whole molecule of the compound is a large rigid structure, and the introduction of substituent groups reduces the planarity of a material, so the steric hindrance of the material is increased, the material is not easy to rotate, and a three-dimensional space structure is more stable; and therefore, the compound has higher glass transition temperature and molecular thermal stability. In addition, the HOMO and LUMO distribution positions of the compound are separated from each other, so the compound has appropriate HOMO and LUMO energy levels; and therefore, after the compound is applied to the OLED device, the luminous efficiency of the device can be effectively improved, and the service life of the device can be effectively prolonged.

The invention discloses a pull pin type diamond rope saw and a manufacturing method. The pull pin type diamond rope saw comprises a steel wire rope and a plurality of diamond string beads, wherein the steel wire rope is sleeved with the diamond string beads; the string beads are formed by sintering a matrix pipe and a diamond working layer; at least one group of holes are radially formed in the matrix pipe; pull pins penetrate through the steel wire rope in the matrix pipe and the holes on the two sides of the matrix pipe; the string beads are stringed by the steel wire rope, and subjected to injection molding to form an anti-rotation diamond rope saw with the diameter of 3-5.5mm; and an injection molding material is infused into the string beads in a direction of the steel wire rope, and filled to the peripheries of the pull pins, and the diamond string beads are clamped, so that the string beads are prevented from rotating relative to the steel wire rope in a cutting process.

The invention belongs to the technical field that the whole section is cut simultaneously by one rotary drill, and particularly discloses a hob mounting structure of a shield tunneling machine. The hob mounting structure of the shield tunneling machine comprises bolts, a hob, a tool apron and a hob shaft used for fixing the hob, and further comprises wedge blocks, wherein threaded holes matched with the bolts are formed in the tool apron; grooves for accommodating the hob shaft and the wedge blocks are further formed in the tool apron; a cross section of the hob shaft is wedge-shaped; through holes are formed in the wedge blocks; the diameter of a bolt head of each bolt is larger than the diameter of each through hole, and the outer diameter of a screw of each bolt is smaller than the diameter of each through hole. Besides, the hob mounting structure further comprises stop blocks fixed on the wedge blocks, sealing plugs are further arranged on the tool apron, and pull rings are arranged on the sealing plugs. Compared with a traditional hob mounting structure of the shield tunneling machine, the hob mounting structure of the shield tunneling machine adopts a newly added design of the wedge blocks, the stability of the hob shaft is greatly improved under the locking action of the bolts on the wedge blocks, and the problem that the hob is likely to fall off is effectively solved.

A reinforcing bar binding machine is provided with: a guide tube for guiding a wire from a wire reel mounted on a binding machine body; a curl guide; a wire cutting mechanism disposed between the guide tube and the curl guide; a first guide pin that is disposed at an end portion of the guide tube or in a vicinity of the end portion of the guide tube, and guides an outer side surface which is an outer side of a wire curve; a second guide pin that is disposed at the end portion of the guide tube or in a vicinity of the end portion of the guide tube, and guides an inner side surface which is an inner side of the wire curve; and a third guide pin that is disposed inside of the curl guide and guides the outer side surface. The wire is brought into contact with the first guide pin, the second guide pin, and the third guide pin, when the wire is fed around a reinforcing bar.

A portable temporary righting device for inclination of a power transmission line pole and tower comprises a rack, a line collecting reel is installed on one side of the rack, a rope is wound around the line collecting reel, a line clamping groove is formed in one end of the line collecting reel, and a ratchet wheel mechanism is arranged at the other end of the line collecting reel, wherein the ratchet wheel mechanism and the line collecting reel coaxially rotate. Pawls and reversing deflector rods are arranged on the rack. A guiding pulley is installed on the other side of the rack, a conical shaft and big gears are installed on the rack and rotate coaxially, and the big gears and a gear set are assembled in a meshed mode. A balance weight disc connected with the gear set is installed on the rack and connected with a pedal through a connecting rod, and the balance weight disc, the connecting rod and the pedal form a crank and rocker mechanism. The portable temporary righting device can temporarily right the pole and tower and prepare time for permanent reinforcement of the pole and tower; operation can be achieved only through manpower, and the portable temporary righting device is applied to finding inclination of the pole and tower in time and temporarily righting the pole and tower in time, and also suitable for pole and tower emergency maintenance engineering in remote mountain regions or pole and tower emergency maintenance engineering where the pole and tower in inclination can not be temporarily righted unless depending on labor.

The invention discloses a device for testing the safety performance of a pre-embedded steel pipe in concrete construction. The device comprises a workbench, a frame and a sleeve; the workbench is fixedly connected with the frame, the interior of the frame is hollow, a hydraulic oil cylinder is vertically installed in the middle of the top of the frame, and the bottom of the hydraulic oil cylinderpenetrates the bottom of the frame and is with an extrusion plate; and an annular groove is formed in the middle end of the exterior of the extrusion plate in the circumferential direction. After theposition of the steel pipe is fixed, fastening bolts on the side surface of the sleeve are screwed into a threaded cylinder, an inner ring is limited, and the position of the inner ring is not prone to moving. The fastening bolts are used for fixing the inner ring, various fixing conditions of the steel pipe in use can be simulated through different fixing forces, subsequent tests are more diversified, and obtained results are more accurate.

The invention discloses a vehicle parking device convenient to park, which comprises two main beams, a first stabilizing frame and a second stabilizing frame, wherein the first stabilizing frame is arranged between the upper parts of the main beams, and the second stabilizing frame is arranged between the bottoms of the main beams; two sides of the middle part of the first stabilizing frame are respectively connected with a limiting rod; the middle part of the limiting rod is provided with a hydraulic telescopic rod; a plurality of transverse plates are respectively connected between the firststabilizing frame and the inner part of a buffer plate along the width direction; two sides inside the first stabilizing frame and the buffer plate are respectively provided with a plurality of clamping grooves; one end of a connecting plate close to the main beams is connected with a bottom plate; two sides of one end of the bottom plate and the connecting plate are respectively provided with asecond hydraulic column, and the top of the bottom plate is horizontally connected with a top plate; vehicle owner can automatically check own vehicle. The vehicle parking device convenient to park has the advantages that the inspection is simple, the inspection in a maintenance shop is not needed, the cost is saved, the transverse plates can be quickly replaced after being damaged, and the use cost of the transverse plates is saved.

The invention provides an ethylene propylene diene porous elastic composite sealing gasket and a manufacturing method thereof. The ethylene propylene diene porous elastic composite sealing gasket comprises a stripped sealing gasket main body on which pores are arranged and a water expansion strip embedded at the top end of the sealing gasket main body, wherein the water expansion strip comprises the following components according to the part by weight: 100 of neoprene rubber, 3-5 of vulcanizing activator, 2-4 of age inhibitor, 20-25 of white carbon black, 120-150 of water absorber and 5-6 of zinc oxide. The manufactured ethylene propylene diene porous elastic composite sealing gasket adopts raw materials having no poison, harm and pollution and having long service life of products. The service life predictive period is forcedly tested by the state-level detection department, and the service life of a tunnel assembled lining rubber sealing gasket can satisfy the requirement of over 100 years, thereby the invention can be widely applied to cross-river tunnels, magnetic suspension train tunnels and subways.

The invention offers thin wall metal pipe fitting fast locking type bonded structure. It includes pipe fitting joint, pipe body, seal ring, external pressure screw cap and roof pressure ring. The pipe fitting joint is set pipe body inner shoulder-hole, convex annular and roof pressure ring inner shoulder hole. Its end out side is set screw thread external tapping. Pipe body cover is set in the pipe fitting joint. It has the advantages of high compressive strength, good seal performance, and low cost. And it can be mainly used in water supply, drinking water or conveyance of fluids industries.

The invention relates to a well-radiating module power supply comprising a shell (1), a circuit board body (2) and a cover board (3). Two sides of the circuit board body (2) are provided with a plurality of heating elements (9). The inner bottom of the shell (1) is provided with a plurality of recesses (4) and conductive aluminum strips (5). The circuit board body (2) is disposed within the shell (1). Protrusions of the heating elements (9) are embedded in the recesses (4). The conductive aluminum strips (5) are abutted to the side of the circuit board body (2). Four inner corners of the shell (1) are provided with bosses (7) integrated to the shell (1); a positioning post (8) is fixed in each boss (7). The shell (1) is internally provided with a step face (6) along the inner upper edge. The cover plate (3) covers the step face (6). The well-radiating module power supply has the advantages that radiating is effective, rotation of the positioning posts is prevented, and a circuit board is stable and reliable.

The invention relates to the technical field of concrete pipe pile preparation, in particular to a concrete pipe pile preparation device which comprises a pouring mechanism, a supporting mechanism, a braking mechanism, a rotating mechanism, a locking mechanism and a limiting mechanism. The pouring mechanism can be conveniently placed under the action of the supporting mechanism, subsequent placing and injecting of concrete and a reinforcement cage are facilitated, accordingly, production and prefabrication of concrete piles are conducted, the braking mechanism is installed on the inner side of the bottom of the supporting mechanism, the supporting mechanism can be conveniently limited under the action of the braking mechanism, and random movement is prevented; meanwhile, under the action of the limiting mechanism, the pouring mechanism can be pressed against and limited, the pouring mechanism is prevented from rotating at the top of the supporting mechanism, the pouring mechanism can be conveniently closed and separated under the action of the locking mechanism, and concrete pouring and demolding work are facilitated; and under the action of the rotating mechanism, centrifugal work can be conveniently conducted on the pouring mechanism, and concrete pile forming and firmer forming are facilitated.

The invention relates to the elastic elliptic bolt for linking two pipes etc. in engineering construction. For example, the connection of the plug-in spiral drill pipe. In the existing techniques, the bolts of the plug-in spiral drill pipe are always U bolts which are easy to fall off without table connection. At the same time, the bolt holes on the corresponding father and mother joints of the U bolts are difficult to process. The invention is elastic elliptic bolt which is composed of the pin top (1), the pin rod (2) and the pin base (3). The cross section of (1) is round and that of (2) and (3) is ellipse. An elastic gap (4) is set at the radial position of (2) and (3). The father and mother joints of the two spiral drill pipes are connected by the opening and closing of (4). The elastic elliptic bolt has self-locking function, which is uneasy to fall off and its connection is convenient and reliable.

The invention relates to a boron-containing organic compound and application of the boron-containing organic compound to an OLED device. The structure of the compound is shown as a general formula (1), in which the molecules of the boron-containing organic compound are of a large rigid structure as a whole, wherein the planarity of the material is reduced through introduction of substituent groups, so that the steric hindrance of the material is increased, the material is not prone to rotation, the three-dimensional space structure is more stable, and therefore the boron-containing organic compound has the high glass transition temperature and the high molecular thermal stability; in addition, HOMO and LUMO distribution positions of the boron-containing organic compound are separated fromeach other, so that the boron-containing organic compound has appropriate HOMO and LUMO energy levels; therefore, after the compound is applied to the OLED device, the luminous efficiency of the device can be effectively improved, and the service life of the device can be effectively prolonged.

The invention relates to a folding-wing unmanned aerial vehicle. The folding-wing unmanned aerial vehicle comprises a vehicle body, a front straight wing, a rear straight wing, a folding vertical finwhich is installed on the afterbody of the vehicle body, and a folding propeller assembly at the rear end of the vehicle body. One of the front straight wing and the rear straight wing is installed onthe top face of the vehicle body, the other one is installed on the bottom face of the vehicle body, and the front straight wing and the rear straight wing can be folded with the vehicle body as thecenter. According to the folding-wing unmanned aerial vehicle, in the unfolding process, the front straight wing and the rear straight wing can be symmetrically unfolded on the left and right sides with the vehicle body as the center, so that in the unfolding process, no difference exists between the balance forces of the front straight wing and the rear straight wing to the unmanned aerial vehicle body on the two sides, rotation of the vehicle body is not easily caused, the stability of the unmanned aerial vehicle is improved, and then the launching success rate of the unmanned aerial vehicleis improved.

The invention provides a modified PMMA optical film. The modified PMMA optical film contains the following components in parts by mass: 60-80 parts of PMMA resin, 20-40 parts of aromatic (co)polycarbonate and 5-14 parts of a compatibilizer, 0.5-8 parts of a flatting agent. The modified PMMA optical film has a flat and smooth surface, is uniform in thickness, high in light transmittance, low in haze level, colorless and transparent and has good heat resistance and tenacity. The invention further provides a preparation method of the modified PMMA optical film. The preparation method comprises the steps of sequentially preparing modified resin and modified coating liquid, forming a film through coating, and carrying out thermal stretch formation and the like. The method is simple in process,easy for industrial production and can be used for preparing the ultrathin and high-transparency modified PMMA optical film.

A terminal pair 1 includes: a pair of terminals 2a, 2b; a plurality of locking portions 7; and a plurality of lock-receiving portions 8a, 8b. Each of the terminals includes: a shield fixing portion 3 to which the shielded wire 20 is attached; and an attaching portion 5 continued to the shield fixing portion 3 and attached to a vehicle body panel 4 by overlapping with the vehicle body panel 4 and fastening to the vehicle body panel 4 with a bolt 9. The locking projections 7 are provided on the attaching portion 5 of one terminal 2a of the pair of terminals 2a, 2b. The lock-receiving projections 8a, 8b are provided on the attaching portion 5 of the other terminal 2b, and locked by the locking portions 7.