30results about How to "Reduce vibration risk" patented technology

The invention discloses a rotor assembly of a gas compressor test part and the gas compressor test part. The rotor assembly comprises a gas compressor blade disc used for increasing the gas flow speedand gas pressure, a balance disc used for balancing axial acting force and arranged coaxially with the gas compressor blade disc, a center pull rod used for tensioning the rotor assembly and transmitting axial force, a power input shaft used for transmitting axial force of torque and fixedly connected with the balance disc and a supporting structure used for supporting the rotor assembly on a casing. The center pull rod penetrates through and locks the gas compressor blade disc and the balance disc. The supporting structure comprises a first supporting part and a second supporting part, the first supporting part and the second supporting part are arranged at the front end and the rear end of the gas compressor blade disc correspondingly, and the balance disc is arranged behind the secondsupporting part. By means of the structural design of the rotor assembly, the supporting span of a rotor is obviously reduced, bending deflection generated when the rotor assembly rotates is reduced,the rigidity and strength of the rotor assembly are increased, and the critical rotation speed margin of the rotor assembly is improved.

A centrifugal pump comprises a housing as well as a rotor which is arranged so as to be able to rotate about an axial axis of rotation in the housing. The rotor is provided with at least two rotor blades, each of which extends substantially radially with respect to the axis of rotation between a radial outer end and a radial inner end. The outer ends of at least two rotor blades are at radially different distances to the axis of rotation.

The invention provides an annular flow guide gate for a ship. The annular flow guide gate is characterized by comprising a left side flow guide pipe, a right side flow guide pipe, left side guide vanes and right side guide vanes; the upper end of the left side flow guide pipe and the upper end of the right side flow guide pipe are fixed to a hull through a reinforcing structure, and the lower end of the left side flow guide pipe and the lower end of the right side flow guide pipe are fixedly connected to the hull; one end of each left side guide vane is installed on the inner side of the left side flow guide pipe, and the other end of each left side guide vane is installed on the hull in the radial direction of a propeller; and one end of each right side guide vane is installed on the inner side of the right side flow guide pipe, and the other end of each right side guide vane is installed on the hull in the radial direction of the propeller. By the adoption of the annular flow guide gate, the wake flow field of the hull can be improved, the losses of the main machine output power are reduced, the efficiency of a thruster is improved, and the navigation speed of the ship is increased. The annular flow guide gate has the beneficial effects of being simple in structure and convenient to install.

A motor-driven machine tool has a drive motor, the motor shaft of which is driven in rotation, with a tool drive shaft, which is driven in rotation or in oscillation about its longitudinal axis, and with a coupling drive for converting the rotational movement of the motor shaft into a driving movement of the tool drive shaft. Furthermore, a coupling is provided, which compensates an angular offset or change in position between the motor shaft and tool drive shaft which deviates from an axially parallel or right-angled arrangement of the two shafts.

The invention provides a modular water-jet propulsion steering and backward navigation mechanism, and relates to the technical field of ship propulsion. The mechanism comprises a steering and backwardnavigation mechanism bracket for fixing a water-jet propulsion steering and backward navigation mechanism; a rudder which is connected with the steering and backward navigation mechanism bracket through a first pin shaft and is used for moving left and right around the first pin shaft under the driving of a steering oil cylinder arranged in the rudder, so that the jet water flow is reversely folded towards the side to realize steering; a reversing vehicle door which is connected with the rudder through a second pin shaft and used for achieving the ahead function in the open state and enablingthe jet water flow to be reversely folded towards the ship bottom in the closed state so as to achieve backward navigation; and an auxiliary rudder plate which is installed on the rudder through a fastener and used for rotating along with the rudder so as to improve the rudder effect. Through modularization of the water jet propulsion steering and backward navigation mechanism, the specificationnumber of the mechanism is reduced, the design and machining cost is reduced, and the machining period is shortened; the assembling and disassembling difficulty is effectively reduced; the processingdifficulty and the rejection rate of the guide vane body are reduced; and product reliability is improved.

The invention discloses a stabilizer. The stabilizer comprises a support shell, an abutting shoe and a telescopic driving portion. The first end of the support shell is fixedly connected with a steelpipe ring. The abutting shoe is nested with an opening in the second end of the support shell. The telescopic driving portion is arranged between the support shell and the abutting shoe. When the telescopic driving portion is activated, the telescopic driving portion drives the abutting shoe to press against the well wall relative to the support shell till the abutting shoe abuts against the wellwall, so that the steel pipe ring is fixed relative to the well wall, the fixing of the steel pipe ring is achieved, the risk that rotation is generated due to reverse torque of the steel pipe ring isreduced, the risk of vibration of the shaft boring machine is further lowered, and the safety is naturally improved. Therefore, the stabilizer has the beneficial effects of improving the safety of the shaft boring machine. The invention further discloses the shaft boring machine including the stabilizer.

The invention relates to a running track for a rail vehicle using a long stator linear drive system consisting of at least one long stator and associated with a number of track elements arranged along the line. The running track comprises a support beam (1) and at least one functional part (2) arranged on the support beam, wherein at least one of the functional parts (2) is arranged along the line and serves to accommodate at least one stator segment (4) The stator load-bearing member (3). The stator segment (4) consists of one or more stator cores (5) having a front butt end (6) and a rear butt end (7). The longitudinal extension of the front butt end (6) has a three-dimensional edge shape (8) protruding out of the cross-sectional plane of the stator core (5), and the longitudinal extension of the rear butt end (7) also has a The three-dimensional edge shape (8) of the butt joint end corresponds to the three-dimensional edge shape (9) of the butt joint. Wherein the front butt end (6) and the rear butt end (7) of the adjacent stator core (5).

The invention discloses a rotor assembly of a gas compressor test part and the gas compressor test part. The rotor assembly comprises a gas compressor blade disc used for increasing the gas flow speedand gas pressure, a balance disc used for balancing axial acting force and arranged coaxially with the gas compressor blade disc, a center pull rod used for tensioning the rotor assembly and transmitting axial force, a power input shaft used for transmitting axial force of torque and fixedly connected with the balance disc and a supporting structure used for supporting the rotor assembly on a casing. The center pull rod penetrates through and locks the gas compressor blade disc and the balance disc. The supporting structure comprises a first supporting part and a second supporting part, the first supporting part and the second supporting part are arranged at the front end and the rear end of the gas compressor blade disc correspondingly, and the balance disc is arranged behind the secondsupporting part. By means of the structural design of the rotor assembly, the supporting span of a rotor is obviously reduced, bending deflection generated when the rotor assembly rotates is reduced,the rigidity and strength of the rotor assembly are increased, and the critical rotation speed margin of the rotor assembly is improved.

The present invention relates to a method for increasing the field of vision in the mirror of a vehicle outside rearview mirror device (1) fixed on at least one side of a vehicle especially automobile. The method includes the steps of: mounting a convex spherical mirror (2) which has a curvature radius about 120-135 cm to the rearview mirror device (1); fixing the rearview mirror to the vehicle such that a distance between the center of the convex spherical mirror (2) of the mirror and a median of a segment, connecting the eyes of a driver of the motor vehicle, projected on a longitudinal axis of the vehicle is in the order of twenty to forty centimeters. The invention also relates to a vehicle for implementing the method, especially automobile.

The invention discloses a mute shockproof radiator structure, and the structure comprises a driving shaft, a driving wheel, a driven shaft, a reverse driven group, a forward driven group, a transmission belt, a sound box housing and a miniature motor. The driving shaft and the driving wheel, the driven shaft, the reverse driven group, the forward driven group, the transmission belt and the miniature motor are installed in the sound box housing, and the driving shaft and the driven shaft are perpendicularly disposed. The driving shaft is mounted on the main shaft of the miniature motor, and thedriving wheel is mounted on the driving shaft. The reverse driven group and the forward driven group are mounted on the driven shaft, and the transmission belt is mounted on the driving wheel. The reverse driven group is aligned with the tangent plane of the upper edge of the driving wheel, and the forward driven group is aligned with the tangent plane of the lower edge of the driving wheel. Thestructure irons out the defects that the effective heat dissipation cannot be achieved under a mute condition and cannot be achieved under the shockproof condition and the effective silencing and shock resistance cannot be achieved during heat dissipation; the structure enables the three optimal effects to be optimized, and a mute shockproof heat dissipation triple-optimization structure for a sound box is achieved.

The invention relates to the technical field of robots, and provides a robot movement mechanism. The robot movement mechanism comprises a motor, wherein a brake cavity is formed in the center of a motor rotor; a brake shaft which is coaxial with the motor rotor is arranged in the brake cavity; the front end of the brake shaft is rotatably connected with the motor rotor through a bearing; a circular truncated cone-shaped brake component which is in threaded connection with the brake shaft is arranged in the brake cavity; a guiding rotation stopping device is arranged on the rear side of the motor; a brake disc is arranged on the front side of the motor; and a brake driving component which is arranged on the motor rotor is also arranged on the front side of the motor. The brake cavity is formed in the motor rotor, and the brake component which is matched with the brake cavity is arranged in the brake cavity, so that the brake component is accommodated in the brake cavity, the size of the robot movement mechanism in the axial direction is reduced, the space occupied by the robot movement mechanism is reduced, and the robot movement mechanism can be applied to light-weight low-cost equipment.

The invention relates to a guide vane type small-flow centrifugal pump. The guide vane type small-flow centrifugal pump is suitable for use in the petroleum, petrochemical and chemical industries to convey low-temperature or high-temperature, inflammable, explosive and highly corrosive media which contains a small amount of particles or is clean. The guide vane type small-flow centrifugal pump ishorizontal and radially subdivided. The centrifugal pump comprises a pump body, a guide vane, an impeller, an impeller ring, a pump cover, a sealing part and a bearing part. The impeller ring is arranged on the impeller, the pump cover is arranged on the bearing part, and the impeller is arranged on a pump shaft and then is packaged on the pump cover through the guide vane to form an impeller working cavity. The pump body is fixedly connected with the pump cover through a bolt, the guide vane and the impeller are packaged between the pump cover and the pump body, and the sealing part is arranged between the pump shaft and the pump cover for sealing. According to the technical scheme, the problem that various pump bodies and impellers need to be researched and developed in the prior art tomeet requirements of different performance parameters is solved.

The invention discloses a wind-resistant device for improving the construction stability of a cantilever of a cable-stayed bridge, which comprises a rope and a damping device, the upper end of the rope is connected with a hanging basket, the lower end of the rope is connected with the damping device, and the damping device is suspended in water by virtue of the buoyancy of the damping device and the tensile force provided by the rope; when wind-induced vibration of a beam body of the cable-stayed bridge occurs, the hanging basket installed on the beam body drives the damping device to move in water through the rope, the damping device is subjected to resistance of water in water, the direction of the resistance is opposite to the moving direction of the damping device, the damping device reciprocates up and down to overcome the resistance of the water to do work, and therefore vibration energy of the beam body is dissipated. And the beam body is recovered from the motion state to the static state. The wind-resistant device of the cable-stayed bridge increases structural damping, timely dissipates energy generated by structural vibration, eliminates vibration of the cable-stayed bridge in a germination stage, and ensures stability and safety in a bridge construction process. Meanwhile, the invention further provides an efficient and rapid construction method.

The invention relates to a warp knitting machine, in particular to a warp knitting machine (1) having a needle bar (2) which is driven by a main shaft through a needle bar drive (8-13), and a slide bar (3) which is driven by the main shaft through a slide bar drive. One would like to specify a cost-effective warp knitting machine which can work with high productivity. For this purpose, the slide bar drive is designed as a slide bar direct drive (14, 15).

The invention relates to an arrangement comprising a steam turbine (2) and two auxiliary steam lines to the steam turbine (2), wherein in each steam supply line there is arranged a diaphragm (10, 11)for the purpose of minimizing undesirable rotor vibrations.

The invention provides a middle support water lubrication ceramic bearing structure of a super-long horizontal multistage centrifugal pump. The middle support water lubrication ceramic bearing structure comprises a pump shaft, a front-stage impeller and a rear-stage impeller are arranged on the two sides of the pump shaft, and the front-stage impeller and the rear-stage impeller rotate along withthe pump shaft; a guide vane, a middle section, a connecting screw, a ceramic bearing II, a ceramic bearing frame, an anti-rotation pin I and a sealing rubber ring are all static parts, so that the complexity of the equipment is greatly reduced, and the economical efficiency of the equipment is improved; the lubricating mechanism of the bearing is still a fluid dynamic pressure bearing, moving andstatic parts of the bearing are still abraded when equipment is started and stopped, and the matching part of the moving and static parts of the bearing structure is made of an optimized ceramic material; and the ceramic material is wear-resistant and high-temperature-resistant and can generate a special reaction product with water, and the reaction product has protection and lubrication effects,so that the starting and stopping safety of the equipment is greatly improved.

The invention discloses a stabilizer, which comprises a supporting shell, an abutting shoe and a telescopic driving part. The first end of the supporting shell is fixedly connected with the steel pipe ring; the abutting shoe is nested with the opening provided at the second end of the supporting shell; the telescopic driving part is arranged between the supporting shell and the abutting shoe. When the telescopic driving part is activated, the telescopic driving part will drive the abutment shoe against the support shell to press against the well wall until the abutment shoe is against the well wall, so that the steel pipe ring is fixed relative to the well wall, realizing the fixation of the steel pipe ring and reducing the steel pipe ring The risk of reverse torque rotation will be reduced, thereby reducing the risk of vibration of the shaft boring machine, and the safety will naturally be improved. Therefore, the stabilizer provided by the present invention is beneficial to improving the safety of the shaft boring machine. The invention also discloses a shaft boring machine including a stabilizer.

The knitting machine (1) has a machine frame (2), where a knitting tool bar (3) is pivotable by a pivot drive relative to the machine frame. The knitting tool bar is connected to the machine frame via a flexural joint arrangement (6). The flexural joint arrangement has multiple bending joints distributed over the length of the knitting tool bar, where the bending joints have flat springs made of fiber reinforced plastic.

The invention relates to a reaction fin in front of a propeller, which is arranged on a conventional right-handed single propeller ship, and belongs to the technical field of hull energy saving equipment. When the reaction fin in front of the propeller is seen from the rear side of the propeller, a stern at the left side of a longitudinal central line of a propeller hub (6) is provided with a first fin (1), a second fin (2) and a third fin (3) from the top to the bottom and the right side of the longitudinal central line of the propeller hub (6) is provided with a fourth fin (4), wherein an included angle alpha between the first fin and the longitudinal central line is in the range of more than or equal to 46 degrees and less than or equal to 53 degrees; an included angle beta between the second fin (2) and the horizontal direction is in the range of more than or equal to 1 degree and less than or equal to 8 degrees; an included angle chi between the third fin (3) and the longitudinal central line is in the range of more than or equal to 37 degrees and less than or equal to 44 degrees; and an included angle delta between the fourth fin (4) and the horizontal line is in the range of more than or equal to 82 degrees and less than or equal to 89 degrees. Due to the adoption of the structure, three of the four fins are distributed in a low-value region, i.e. a high-speed region, of a wake field, so that the adverse effect of the resistance of the fins on the flowing in a low-speed region is reduced, and the fins distributed in the high-speed region are also beneficial to the homogenization of wake when ensuring the wake field in front of the propeller to rotate in advance.

The invention relates to a warp knitting machine, in particular to a warp knitting machine (1) having a needle bar (2) which is driven by a main shaft through a needle bar drive (8-13), and a slide bar (3) which is driven by the main shaft through a slide bar drive. One would like to specify a cost-effective warp knitting machine which can work with high productivity. For this purpose, the slide bar drive is designed as a slide bar direct drive (14, 15).

The invention provides a knitting machine (1), comprising a machine frame (2) and at least one looping tool guide bar(3). The looping tool guide bar(3) can swing relative to the machine frame (2) via swinging driving mechanisms(11-14). In order to maintain the manufacturing and work costs of the knitting machine to be low, the looping tool guide bar(3) is connected with the machine frame (2) via a bending movable joint device(6).

The invention discloses a mute shockproof radiator structure, and the structure comprises a driving shaft, a driving wheel, a driven shaft, a reverse driven group, a forward driven group, a transmission belt, a sound box housing and a miniature motor. The driving shaft and the driving wheel, the driven shaft, the reverse driven group, the forward driven group, the transmission belt and the miniature motor are installed in the sound box housing, and the driving shaft and the driven shaft are perpendicularly disposed. The driving shaft is mounted on the main shaft of the miniature motor, and thedriving wheel is mounted on the driving shaft. The reverse driven group and the forward driven group are mounted on the driven shaft, and the transmission belt is mounted on the driving wheel. The reverse driven group is aligned with the tangent plane of the upper edge of the driving wheel, and the forward driven group is aligned with the tangent plane of the lower edge of the driving wheel. Thestructure irons out the defects that the effective heat dissipation cannot be achieved under a mute condition and cannot be achieved under the shockproof condition and the effective silencing and shock resistance cannot be achieved during heat dissipation; the structure enables the three optimal effects to be optimized, and a mute shockproof heat dissipation triple-optimization structure for a sound box is achieved.