56results about How to "Suppresses bending deformation" patented technology

A liquid ejection device includes a transport unit, a medium support unit and a liquid ejection head. The medium support unit includes a plurality of first recesses and a plurality of second recesses arranged on a medium support surface along a width direction orthogonal to a transport direction. The first and second recesses are configured and arranged to be imparted with negative pressure. A width dimension of an opening of the first recess in the width direction is larger on the downstream side than on an upstream side. A width dimension of an opening of the second recess in the width direction is smaller than the width dimension of the opening of the first recess in the width direction on the downstream side with respect to the transport direction. The second recesses are configured and arranged to accept the liquid ejected toward the ejection medium from the liquid ejection head.

The invention relates to a lead screw feeding platform with a loading assistant support, which is characterized in that a motor drives a lead screw, two ends of the lead screw are fixedly supported by a bearing; the lead screw and a workbench driving nut form a rolling spiral kinematic pair; the workbench driving nut is provided with a workbench; the bottom end of the workbench is provided with aguide rail; a loading assistant support device is arranged between two bearing supporting devices; the loading assistant support device comprises assistant driving nuts respectively arranged on two sides of the workbench driving nut; two assistant driving nuts are connected with the lead screw; each assistant driving nut is respectively fixedly connected with a slide block; the lower parts of thetwo slide block form a moving pair with the assistant supporting guide rail; and two slide blocks are respectively provided with a pressure sensor. In the lead screw feeding platform, real-time loading can be realized by the loading assistant support, the radial stress situation of the lead screw can be detected to reflect the nonparallelism of the vertical direction of the guide rail to effectively inhibit the flexural deformation of the lead screw due to radial stress, thus, the lead screw feeding platform can be widely applied to the horizontal large-route high-speed feeding platform of a machine tool lead screw.

The invention discloses a squirrel-cage elastic support. The support comprises two fixing rings, a plurality of elastic strips and a bearing, wherein the plurality of the elastic strips on the same circumference are equationally fixed between the end surfaces of the two fixing rings to form a squirrel cage, a shaft inside the squirrel-cage is fixedly connected with a bearing inner race, a rolling outer ring is contacted with the elastic strips to form the squirrel-cage elastic support; or a bearing outer ring is fixedly connected with a bearing support, and the bearing support is contacted with the elastic strips to form the squirrel-cage elastic support. In the condition of permission and fitness of a mechanical structure, the squirrel-cage elastic support can inhibit bend and deformation of the shaft, reduce vibration of a machine, reduce the damage to the structure or parts, improve the operation stability of the machine, prolong the service life of the machine, reduce noise generated by vibration and the like. The squirrel-cage elastic support can be applied to various rotary machines.

A door weather strip has a mounting base portion, a hollow seal portion, a sub-seal lip, and a backside seal lip. Leading lips are provided in the middle of a front pillar part in such a way as to connect the backside seal lip to the sub-seal lip. Each of the leading lips forms an acute angle with respect to an extending direction of the backside seal lip. Especially, in an attached state, an intersection angle α formed between the backside seal slip and each of the leading lips is set to be smaller than an angle β formed between the extending direction of the backside seal lip, and a vertical line. A large amount of water flowing down a groove like dribbles does not accumulate on the leading lips. Even just a small amount of the water is positively led to the exterior side of an automobile.

It is to provide a pneumatic tire in which a bulk modulus of elasticity of a tread rubber is small and an inverse V-shaped bending in a tread portion is suppressed to effectively prevent separation failure, breakage and the like of a belt layer, which comprises a radial carcass, a belt of two belt layers with a cross cord arrangement reinforcing a tread portion at an outer peripheral side of a crown portion of the radial carcass and a rubber reinforcing layer having a crescent-shaped form at a cross section, wherein the tread rubber forming a ground contact face of the tread is made of rubber having a bulk modulus of elasticity of not more than 4 GPa and an additional belt layer of cords having a cord angle with respect to an equatorial plane of the tire larger than that of cords in each of belt layers is arranged on an outer peripheral side of the belt and a compression rigidity of the additional belt layer in a widthwise direction of the tread is made 2 times or more larger than that of the belt layer.

A fixing device has a fixing roller including an inside roller, an outside roller and a regulation member. The regulation member is disposed outside of both ends of the outside roller in the axial direction to regulate axial movement of the outside roller. An axial length of the contact face, where the pressure roller contacts with the outside roller, is smaller than an axial length of the outside roller. Thereby, both ends of the outside roller hardly receive bending deformation caused by pressure of the pressure roller. This makes it possible to reduce stress exerted to both ends of the outside roller, and therefore, the ends of the fixing roller are prevented from being damaged to enhance durability of the fixing roller.

The invention discloses a super high-speed quenching device for a steel tube and relates to a cooling device. The quenching device comprises a shell with water inlets; a plurality of inclined seam nozzle units are arranged in the shell and are pressed against each other in parallel; gaps are reserved between the shell and the inclined seam nozzle units and are cooling water layers; each inclined seam nozzle unit has an annular structure, and sequentially consists of a water guide plate, a flow stabilization layer wall plate and a nozzle adjustment sleeve plate from exterior to interior; a plurality of water guide columns are uniformly distributed on the circumference of each water guide plate; the extension lines of the water spraying directions of all the water guide columns are intersected to form an inscribed circle, and the diameter of the inscribed circle is less than or equal to that of the steel tube to be cooled; the water guide columns of the adjacent inclined seam nozzle units are staggered; an inner cavity which is formed by the flow stabilization layer wall plates has a shape of a funnel with a wide exterior and a narrow interior; each nozzle adjustment sleeve plate is annular; gaps between the nozzle adjustment sleeves plates are inclined seam nozzles; the inclined seam nozzles are inclined seams of which the width is gradually reduced from exterior to interior.

The invention provides a turbine rotor blade and a gas turbine with the same. The turbine rotor blade comprises a shroud, a blade body and a tenon, the shroud comprises a first pre-twist contact surface and a second pre-twist contact surface, wherein the first pre-twist contact surface is peripherally arranged at a first peripheral end of the shroud, and the second second pre-twist contact surface is peripherally arranged at a second peripheral end of the shroud. Arrangement of the first pre-twist contact surface and the second pre-twist contact surface includes that after a plurality of turbine rotor blades are assembled, the second pre-twist contact surface of each turbine rotor blade is matched with the first pre-twist contact surface of each adjacent turbine rotor blade in an extrusion manner, so that the shrouds of each two adjacent turbine rotor blades jointly generate a pre-twist angle by using a blade stacking shaft as the axis. According to the technical scheme, the shrouds of each two adjacent turbine rotor blades have the pre-twist moment with the direction opposite to that of the moment generated by gas impact force, so that twist and bending deformation of the blades in work can be effectively inhibited, and flow blade profile loss is reduced.

The present invention provides a heavy load tyre capable of improving the durability of a tyre bead part. The heavy load tyre is equipped with a tyre 6 made of a tyre body cord fabric 6A, and the tyre body cord fabric 6A comprises a main body part 6a and a return part 6b. The tyre bead part 4 is equipped with a first reinforcing part 11 located at the side of the main body part 6a and a second reinforcing part 12 located at the side of the return part 6b, the first reinforcing part 11 comprises a first steel wire cord fabric layer 21 and a second first steel wire cord fabric layer 22 of which the cross-section is roughly U-shaped, and the second reinforcing part 12 comprises a first organic fiber cord fabric layer 31 covering the outer end at the side of the return part 6b of the second steel wire cord fabric layer from the axial outer side of the tyre and a second organic fiber cord fabric layer 32.

Disclosed is a vibrating mirror element which can suppress the occurrence of deflection deformation in a support section. A vibrating mirror element (100) is provided with: a mirror section (10); deformable drive sections (41, 43, 45, 51, 53, 55); and support sections (42, 44, 46, 52, 54, 56) which are connected by the side of end sections (42a, 44a, 46a, 52a, 54a, 56a) thereof to connection sections (41c, 43d, 45d, 51c, 53d, 55d) on one side of the drive sections. The thickness of the support sections is greater than the thickness of the drive sections.

The invention discloses a high-quality factor elliptical resonator, which comprises an elliptical harmonic oscillator, a piezoelectric driver, a piezoelectric detector, a supporting beams, anchor points, pins, wires and a substrate; the supporting beams comprise the first supporting beam and the second supporting beam. The wires comprise a driving signal wire, a detection signal wire, a first grounding signal wire and a second grounding signal wire; the anchor points comprise a first anchor point and a second anchor point; the pins comprise a first grounding signal pin, a second grounding signal pin, a detection signal pin and a driving signal pin; a suspended elliptical harmonic oscillator is arranged on the top surface of the substrate, one end of a long axis of the elliptical harmonic oscillator is connected with the first anchor point through the first supporting beam, and the other end of the long axis of the elliptical harmonic oscillator is connected with the second anchor pointthrough the second supporting beam; the problem of loss caused by torsional deformation of the supporting beam in the prior art is solved.

Provided is a run-flat tire that achieves a high dimension of both run-flat durability and riding comfort, and enables the improvement of steering stability during normal traveling. In the side-reinforced run-flat tire, the relationship between the rim width (Wr) and the distance (Do) to the tire equator plane from the center position of a peripheral-direction primary groove positioned to the outermost side in the widthwise direction of the tire in the outside region of the vehicle is 0.20 ≤ Do/Wr ≤ 0.30, the relationship between the rim width (Wr) and the distance (Di) to the tire equatorial plane from the center position of a peripheral-direction primary groove positioned to the outermost side in the widthwise direction of the tire in the inside region of the vehicle is 0.25 ≤ Di/Wr ≤ 0.35, the relationship between the groove width (Wi) of the peripheral-direction primary groove positioned at the outermost side in the widthwise direction of the tire at the inside region of the vehicle and the groove width (Wo) of the peripheral-direction primary groove positioned at the outermost side in the widthwise direction of the tire at the outside region of the vehicle is 0.80 ≤ Wo/Wi ≤ 0.90, the relationship between the thickness (Ga) at a rim check line position of an outside rubber portion at the outside of a carcass layer and the greatest thickness (Gb) of same is 0.8×Gb ≤ Ga ≤ 1.0×Gb, and the relationship between the thickness (Gc) at the rim check line position of an inside rubber portion at the inside of the carcass layer and the thickness (Ga) is 0.7×Ga ≤ Gc ≤1.0×Ga.

The invention relates to a strengthening treatment method for a glass tube in the on-line production process and belongs to the field of manufacturing of glass materials. In the method, when the temperature of the glass tube is below the annealing temperature point and the surface temperature of the glass tube is between 200 and 600 DEG C, a liquid strengthening medium is sprayed on the outer side of the glass tube by an annular ultramicro atomizer, wherein the strengthening medium is pure water, aqueous solution of pure water and vinyltriethoxysilane, aqueous solution of diethyl dichlorosilane or aqueous solution of isobutyl trimethoxysilane; the solid content of the aqueous solution is 15 to 35 weight percent; and the solvent is pure water. The invention aims to provide the strengthening treatment method for the glass tube in the on-line production process. By the method, mechanical strength of the glass tube is improved and the application safety of the glass tube is improved. The strengthening treatment process belongs to an on-line process, so energy is saved to the maximum extent, labor cost is reduced, the production process is simplified, and occupied area is reduced.

The invention provides a polar group fastening structure for a lead-acid storage battery. An upper clamp plate and a lower clamp plate are respectively arranged on the top and the bottom of a polar group and are tightened by a packing belt, and a lug hole and an acid penetrating hole are formed in the upper clamp plate. The polar group fastening structure provided by the invention is used for assembling the polar group of the lead-acid storage battery, and can be used for effectively inhibiting longitudinal extension of a grid and maintaining the stability of the grid structure in a charge and discharge process of the battery particularly for the battery with the anode which is lead-calcium alloy, and meanwhile, the influence caused by longitudinal extension of the grid on internal resistance is reduced and the service life of the battery is prolonged.

The invention provides a scanning method for restraining bending deformation of a laser-welded thin plate. The scanning method comprises the steps: step S1, before welding, preprocessing the surface of a thin plate sample to be welded, and preheating the preprocessed sample; step S2, fixing the face to be processed of the preheated thin plate sample on a welding workbench upwards; step S3, settinglaser welding process parameters; and step S4, controlling the scanning speed for laser scanning welding for the sample by adopting a symmetric parabola type variable-speed scanning method accordingto the change law of a quadratic parabola. Under the premise of ensuring reasonable laser heat input, the conventional constant scanning speed is changed to the symmetric parabola type scanning speed,so that the scanning method improves the uneven distribution of temperature and stress on a scanning line and reduces pit collapse in the initiating end and the tail end of a welding bead. Meanwhile,the scanning method can also restrain the undesired bending deformation of the thin plate during welding.

The invention relates to a composite frame cladding cover for long-life tundish. The composite frame cladding cover comprises a composite frame structure, a refractory material and triangular anchoring parts, wherein the composite frame structure comprises an outer beam, rectangular frames and rib plates, the rectangular frames are welded and connected by transverse side plates and longitudinal side plates, the rib plates are arranged in the rectangular frames, the rib plates are connected by transverse rid plates and longitudinal rid plates, the triangular anchoring parts are uniformly fixedto the rectangular frames and the rib plates, the composite frame structure and the refractory material are integrally poured and formed, a large steel flowing hole, two baking holes, a small steel flowing hole, two small exhaust holes and a temperature measurement hole are formed in a steel structure poured by the refractory material, the shape of the composite frame structure is consistent withthat of the opening of the tundish, and the thickness of the rectangular frames of the composite frame structure is consistent with that of the cladding cover of the tundish. The cladding cover for the tundish has the advantage of long service life, thereby reducing the enterprise cost.

The invention relates to a switching structure of cover parts for vehicle, which can prevent conducting wire for vehicle connected with electrical installation parts from bending by simple structure and prevent the switching part from interfering, and reduce the manufacturing cost. The said structure comprises: hinge stay fixed on the cover parts for vehicle; hinge brace fixed on the vehicle body and freely pin jointing the said hinge stay relative to the vehicle body; plate fixed on the hinge stay; conducting wire for vehicle from the vehicle body to electrical installation parts of cover parts for vehicle. The said conducting wire for vehicle is composed of : a first fixed part on the vehicle body; a second fixed part on the plate; and intermediate part, which is set at least along shaking central shaft of the said hinge stay when closing the cover parts for vehicle, and the said part is installed in the way of connecting between the first fixed part and the second fixed part, while distorting along the circumference direction of the conducting wire for vehicle.