37results about How to "Prevent circular motion" patented technology

A mounting assembly for an aft end of a liner of a gas turbine engine combustor including a support member, wherein a longitudinal centerline axis extends through the gas turbine engine. The mounting assembly includes a pin member extending through each one of a plurality of circumferentially spaced openings in a portion of the support member for the combustor and into a plurality of partial openings formed in the aft end of the liner, with each pin member including a head portion at one end thereof, and a device positioned within each opening in the support member so as to retain the pin members therein. The pin members and the support member are able to slide radially and / or axially with respect to the liner aft end as the support member experiences thermal growth greater than the liner.

A shroud for turbine engines. The shroud has an integrated anti-rotation device that prevents circumferential movement of the shroud during normal engine operation, and which allows for circumferential installation in split annular case designs. Since the anti-rotation device is an integral part of the shroud and / or annular split turbine case, no additional parts are necessary for assembly or disassembly. Moreover, existing annular split turbine cases can be reworked to accept the anti-rotation device and yet still be backwards compatible with original shroud designs.

The invention provides a method for preparing a seaweed extracting solution and a rotation basket extracting device. The preparing method includes the steps that seaweed and activated carbon are thrown into a plurality of medicine baskets, and meanwhile solvent is added into a tank body; a motor is started, a center shaft is made to rotate, hence, the medicine baskets are driven to make centrifugal movement, and chemical substances included in the seaweed are extracted through the solvent; after extracting is completed, the extracting solution is discharged from a liquid medicine outlet; the extracting solution is settled through kieselguhr; supernate is collected, microfiltration is conducted through a ceramic membrane, permeate liquid is collected, and accordingly the seaweed extracting solution is obtained. The rotation basket extracting device comprises the tank body, the center shaft and the medicine baskets. The center shaft penetrates in the center of the tank body in a rotating mode, the medicine baskets are arranged on the center shaft, solvent inlets and a medicine change opening are formed in the top of the tank body, and the liquid medicine outlet is formed in the center of the bottom of the tank body. The method has the advantages of being simple in process, short in period, environmentally friendly and safe. The content of active substances of the prepared extracting solution is high, the number of varieties of active ingredients is large, and stability is achieved.

A brake shoe for a drum brake includes an arcuate brake table defining radially inner and outer sides. First and second webs are disposed on the radially inner side of the brake table and configured to support the brake table. One or more brake linings are disposed on the radially outer side of the brake table. In one embodiment, the brake table defines a plurality of fins projecting radially inwardly from the radially inner side of the brake table, each of the plurality of fins having a length in a radial direction. In another embodiment, the brake table is a unitary body and is configured at first and second ends and a point intermediate the first and second ends to engage first and second brake linings and prevent circumferential movement of the first and second brake linings relative to the brake table. The brake table may comprise extruded aluminum.

In an anchoring device, a drill head and expansion element(s) are configured to cooperatively interlock with each other to provide for directed movements of the drill head relative to a longitudinal axis of the shaft. Co-operating contact surfaces between the drill head and the expansion element(s) are configured such that relative longitudinal movement of the drill head with respect to the expansion element(s) displace(s) the expansion element(s) outwardly so the expansion element(s) can provide frictional contact with a borehole once inserted therein.

An auxiliary wedge positioning apparatus / assembly 100 for use in a nuclear reactor pressure vessel 12 having riser piping 44 and 144 and a jet pump assembly 46 and 120, the apparatus 100 having a combination slide wedge 105 and spring 103 mounted on a restraint bracket body 102 having a transverse rail 110 with end gull-wing hooked protrusions 111 with sections 150, 152, 156 and wing stability attachment 155, the slide wedge used for placement between the riser piping 44 and 144 and jet pump assembly 46 and 120 to control vibrations during operation of the reactor vessel 12.

The invention discloses a novel turbodrill capable of achieving accurate positioning of a stator and a rotor. The novel turbodrill is applied to the fields of petroleum drilling, mining, geological drilling and the like and solves the problem that the hydraulic performance of turbine sections is low when the turbodrill works. According to the technical scheme, the turbine stator is fixedly installed on a turbine shaft through a screw and a fastening nut, and the inner wall of a shell and the outer wall of each stage of a stator sleeve are provided with two symmetric key grooves to position the turbine stator in a flat key mode; the turbine shaft and a rotor sleeve are both machined to be regular octagon structures which are mutually matched; a thrust bearing set is installed on the middle-back section of the turbine shaft; a planetary gear reducer is arranged in a lower shell. According to the novel turbodrill, by means of the two methods that the turbine rotor and the turbine stator are fixed in the circumferential direction, it is guaranteed that the stator and the rotor cannot relatively rotate separately and precise circumferential positioning of the stator and the rotor can be achieved, therefore, the hydraulic performance of the turbodrill is improved, and meanwhile the cost is lowered.

Disclosed is a fixing roller which comprises a core 16 , a porous material layer 22 disposed in surrounding relation to an outer peripheral surface of the core 16 , and a thin-walled metal sleeve 26 covering an outer peripheral surface of the porous material layer 22 . The porous material layer 22 comprises a closed cell-type silicone elastomer. The present invention provides a fixing roller capable of ensuring enhanced durability and maintaining a usable state over long periods under the condition of being actually driven and rotated.

A diaphragm valve has a valve body which includes at least one flow passage for fluid flow, a valve drive including a housing, and a diaphragm which can be deflected by the valve drive, in order to selectively open and close the flow passage. The rim of the diaphragm is axially clamped in a fluid-tight way between valve body and valve drive, wherein clamping of the diaphragm is effected by a screw-nut connection and the screw and the nut surround the rim of the diaphragm as seen in actuating direction of the valve drive and one of the two parts formed by screw and nut is non-rotatably provided at the valve body or at the valve drive. The other one of the two parts can be screwed in or on and additionally is rotatorily movable. The movable part is supported on the valve drive or on the valve body by an anti-friction bearing.

A stator core includes at least one bendable strip-shaped core. Each strip-shaped core is formed by stacking a plurality of laminations. Each lamination includes at least two yoke portions and at least two tooth portions. Every two adjacent yoke portions are connected to each other via a bendable portion and have two opposite end surfaces, one of the end surfaces having a groove and the other having a projecting rib. After the bendable portion is bent the projecting rib is engaged in the groove to form an interlock structure such that relative circumferential movement between the adjacent yoke portions is limited.

The invention discloses a novel rolling head. The novel rolling head comprises a pressing part, a toppling part, a rolling part and a pressure applying part. The technical scheme is that when the device starts operating, a motor rotates to drive a spindle to rotate, the rolling head is lowered, cylindrical pins are in contact with the surface of a workpiece firstly, a rolling upper body compresses compression springs IV, a rolling lower body, an angular contact bearing, a central shaft, square-round keys and a pressing disc seat are sequentially pressed till compression springs I are slowly compressed, toppling devices are toppled, and first-step toppling operation is achieved; the rolling head continuously rotates and declines, set screws pressing an inner roller foot are pushed to move downwards and rotate while rolling, an outer roller is in contact with a curved surface of the workpiece and performs rotary rolling, integral rolling action is achieved, and the toppling devices are positioned on the upper side of the lower end of the roller at the moment; and after rolling, a spindle box drives the rolling head to rise to a certain height, the compression springs IV bounce off the rolling upper body and the rolling lower body, the springs at other parts recover to the previous state, and rolling operation of next workpiece is facilitated. The novel rolling head has the characteristics that the time and space are saved, and the production efficiency is improved.

The rotor body of an electrical machine has end windings supported by a plurality of circumferentially spaced rakes having tines between which the end windings pass in an arcuate pattern from and for return to an axial orientation within the rotor body. The rakes are supported on axial beams secured to the rotor body. An end disk is secured at the opposite ends of the beams and to a shield overlying the end windings. The rakes, beams and end disks provide axial end winding restraint. The end disk is weighted at selected circumferential locations to resist tendencies of the end windings to distort, e.g., toward an elliptical or non-concentric configuration about the rotor axis.

The invention discloses a multifunctional examination couch special for a pregnant woman. The multifunctional examination couch comprises a bottom plate and a hip plate, wherein the bottom plate and the hip plate are connected through sliding rail mechanisms, first sliding blocks and supporting rods; the middles of the supporting rods are rotatably connected with a first rotary shaft; a second rotary shaft and a third rotary shaft are arranged between the parallel supporting rods, and are correspondinglyprovided with a transmission block and a limitingblock; a driving screw tube driven by a motor to rotate is penetratedly arranged in the transmission block and the limiting block; the front end of the hip plate is rotatably connected with a leg plate; the lower end of the leg plate is provided with a supporting block; a front driving rod is in threaded cooperation in the driving screw tube; the front end of the driving rod is provided with a rolling disk cooperated with the supporting block; the rear end of the hip plate is rotatably connected with a back plate; the lower end of the back plate is provided with a rotatable supporting rod of which the lower end is provided with a second sliding block; and a position, which is below the back plate, on the bottom plate is provided with a rail supporting rod of which the upper end is provided with a sliding rail mechanism cooperatedwith the second sliding block. By use of structure, a bed surface can be flattened and raised by one button so as to be convenient for the pregnant woman to get on and get out of a bed as well as liedown, and the multifunctional examination couch has an artful framework and is suitable for promotion.

A gas turbine engine includes a tangential on-board injector (TOBI) fluidly connected to a compressor section. A diffuser case structurally supports a combustor section and the tangential on-board injector via at least one low thermal mass joint.

The invention discloses a lifting hook structure of a tower crane. The lifting hook structure comprises an upper pulley block (1), a lower pulley block (2), a multiplying power pin shaft (3) and a shaft sleeve (5), wherein corresponding connection holes are formed in the upper pulley block (1) and the lower pulley block (2); the multiplying power pin shaft is provided with a split pin hole in a shaft shoulder; a corresponding slit pin hole is formed in the shaft sleeve; the shaft sleeve is fixed on the outer side of the upper pulley block or the lower pulley block; the multiplying power pin shaft penetrates into the connection holes of the upper pulley block and the lower pulley block from one side of the shaft sleeve when being installed; and when the slit pin hole of the multiplying power pin shaft is concentric with the slit pin hole in the shaft sleeve, a slit pin (4) is inserted and fixed. According to the lifting hook structure of the tower crane disclosed by the invention, by a structural form of fixing movement of the pin shaft in two directions by virtue of the slit pin, transformation of multiplying power can be achieved by an operator on only one side of the lifting hook; the lifting hook structure is simple in structural form, convenient to produce and process, and convenient to install and dismantle.

The invention discloses a clamp for sawing a motor swash plate. The clamp comprises a bottom plate, a station plate and a positioning plate. The station plate is installed on the bottom plate, the positioning plate is installed on the station plate, a positioning pin and a directional pin are installed on the positioning plate, the positioning pin and the directional pin are used for determining the central position of a cylindrical part and preventing the cylindrical part from moving in the circumferential direction, and the portions, on the two sides of the positioning plate, of the stationplate are correspondingly hinged with a left clamping block and a right clamping block. The clamp has the beneficial effects of being simple in structure, high in sawing precision, easy and convenientto use and capable of improving the angular precision of the inclined plane of the part to a certain extent and reducing the production cost. According to the clamp, the clamp is fixed by a hydraulicmechanism of a sawing machine, the central position of the cylindrical part is determined through the positioning pin and the directional pin on the clamp, and the circumferential movement of the cylindrical part is prevented; in addition, the left clamping block and the right clamping block are adopted to prevent the radial movement of the part, so that displacement does not occur in the sawingprocess of the part; the design of the left clamping block and the right clamping block ensures that the sawing position of a saw blade is accurate, and the angle of the part can be ensured; and on this basis, the invention further provides a production line.

The invention belongs to the field of centrifugal pumps and particularly relates to a wear ring easy to mount and used for reducing leakage. Elastic clamping buckles are arranged on the wear ring; clamping grooves matched with the elastic clamping buckles are formed in a centrifugal pump body; and the elastic clamping buckles and the clamping grooves constitute interference connection. The wear ring has the beneficial effects that 1, the elastic clamping buckles are arranged on the wear ring, the clamping grooves matched with the elastic clamping buckles are formed in the centrifugal pump body, the effect of fixing the wear ring can be achieved relying on interference connection of the elastic clamping buckles and the clamping grooves and elastic deformation of the elastic clamping buckles without bolts; and 2, the elastic clamping buckles are arranged on the wear ring, so that axial movement of the wear ring can be prevented, and a positioning boss is arranged on the wear ring, so that circumferential movement of the wear ring can be prevented.

The invention relates to a dynamic and static combined torque sensor of an electric power-assisted bicycle. The torque sensor comprises an action unit, a detection unit and a processing and outputtingunit, the detection unit detects the magnetic conversion on the action unit and the rotating speed and the rotating direction of the action unit; the processing and outputting unit collects information detected by the detection unit, converts the information into a corresponding voltage signal, performing amplifying processing and outputting the amplified signal, the output signal of the processing and outputting unit is output through a filter cable, the peripheries of the detection unit and the processing and outputting unit are sleeved with a metal sleeve, a groove is formed in the inner periphery of the metal sleeve and parallel to the axis of the metal sleeve, and a protrusion is arranged at the position, corresponding to the groove, of the filter cable. The invention aims to overcome the defects in the prior art. The dynamic and static combined torque sensor of the electric power-assisted bicycle is good in measurement precision, high in universality and stable in internal signal output.

The invention discloses a cylinder penetrating connector. The technical problem that an existing cylinder penetrating connector is low in sealing performance is solved. The connector comprises a plugsheath assembly, a terminal assembly and a blocking rod assembly. The plug sheath assembly comprises a sheath assembly and a clamp assembly connected with the sheath assembly, and first-stage sealingis formed between a plug sheath of the sheath assembly and the clamp assembly, between the terminal assembly and a clamp of the clamp assembly and between the blocking rod assembly and the clamp; anda second-stage seal is formed between the plug sheath assembly and the terminal assembly. The cylinder penetrating connector is internally provided with two sets of sealing systems which are relatively independent and supplement each other, the pressure borne by a single set of sealing system is reduced, the risk of oil leakage caused by a sealing piece is reduced, and the sealing performance of the cylinder penetrating connector is guaranteed.

The invention discloses a ground support structure for a high and low temperature environment simulation test system, comprising a bottom heat storage structure, an invar bottom support structure, a heat preservation structure and an invar non-deformation platform; the support structure is divided into four layers from bottom to top, The bottom heat storage structure, the Invar bottom support structure, the thermal insulation structure and the Invar non-deformation platform are in sequence; the bottom heat storage structure includes the foundation pit waterproof coating, the melon seed sheet heat storage layer and the cement mortar leveling layer; the Invar bottom support structure includes Bottom embedded steel plate, Invar rib, Invar steel tube, stainless steel sealing plate at the bottom of the box, stainless steel bellows, Invar mesh rib, Invar mounting flange, stainless steel bottom plate and carbon steel I-beam frame; thermal insulation structure includes Insulation glass brick, pressure steel plate and asbestos plate; Invar non-deformable platform including non-deformation platform and connecting bolts. The whole supporting structure of the present invention has strong load-bearing capacity and high and low temperature resistance, and has good stability, deformation resistance and safety.

The invention relates to an anti-leakage structure of a vacuum blow-down valve. The anti-leakage structure comprises the vacuum blow-down valve, an upstream connecting assembly and a downstream connecting assembly, wherein the vacuum blow-down valve can allow sewage to flow and stop the sewage from flowing, and the upstream connecting assembly and the downstream connecting assembly are disposed onthe two sides of the vacuum blow-down valve correspondingly. The vacuum blow-down valve is provided with a sewage flowing end and a negative pressure flowing end along the sewage flowing direction. The upstream connecting assembly is connected with the sewage flowing end in a sealed mode and used for enabling sewage to flow into the vacuum blow-down valve. The downstream connecting assembly is connected with the negative pressure flowing end in a sealed mode and used for enabling sewage to be discharged through the switched-on vacuum blow-down valve, and a positioning mechanism for preventingthe vacuum blow-down valve from doing circumferential and axial movement is arranged at the joint of the downstream connecting assembly and the negative pressure flowing end. The anti-leakage structure is used for achieving external connection sealing and fixing of the vacuum blow-down valve applied to a vacuum closestool, is positioned in the circumferential direction and the axial direction ina reasonable and simple external connection mode, positioning is good, reliable sealing can be further guaranteed, the fault rate of the vacuum blow-down valve is reduced, and the use fault rate of the vacuum closestool is further reduced.

The invention provides a speed reducer fixing device applied to the technical field of speed reducers of steel billet continuous casting withdrawal and straightening machines. One end of a device support (1) of the speed reducer fixing device is connected with a speed reducer rack (2), the other end of the device support (1) is provided with a connecting part (3), the connecting part (3) is provided with an external thread part (5), a threaded hole (6) is formed in the end part of one end, far away from the device support (1), of the connecting part (3), one end of a sleeve part (7) is sleevedon an external thread part (5) of the device support (1) through an inner thread part, the other end of the sleeve part (7) is provided with a flange part (8), the sleeve part (7) is sleeved with a wear-resistant buffering sleeve (4), and a speed reducer lifting lug (10) of a speed reducer (9) sleeves the wear-resistant buffering sleeve (4). The speed reducer fixing device can be used for conveniently and reliably reinforcing the speed reducer, so that the equipment stability is improved, the vibration damage of the speed reducer is reduced, and the speed reducer and the motor are prevented from swinging with relatively large amplitude.

The invention relates to a circuit breaker and a closing resistor thereof. The closing resistor of the circuit breaker comprises an insulating rod; the plurality of resistor discs are arranged, and all the resistor discs are stacked and sleeved on the insulating rod along the axial direction of the insulating rod; and the buffer piece is arranged between the insulating rod and the resistor disc so as to play a role in buffering the insulating rod and the resistor disc during vibration. According to the utility model, the buffer pad is arranged between the resistor disc and the insulating rod, so that the problem that the resistor disc and the insulating rod collide with each other and are damaged due to vibration generated in the process of transporting and operating the circuit breaker is solved, and the safety and reliability of a product during operation are improved. In addition, the buffer pad is arranged between the resistor disc and the insulating rod, so that the appearance of the insulating rod is not restrained, and diversified design can be carried out on the insulating rod.