60 results about "Conical tooth" patented technology

PCT No. PCT / EP96 / 02020 Sec. 371 Date Nov. 5, 1997 Sec. 102(e) Date Nov. 5, 1997 PCT Filed May 10, 1997 PCT Pub. No. WO96 / 35541 PCT Pub. Date Nov. 14, 1996Disclosed is a method of grinding bevel gear teeth in an intermittent indexing process using a single grinding wheel provided with different bevel angles ( alpha ) to produce the desired grinding wheel radii (R): one flank is machined during grinding in downward generation as far as a first turning point, another flank is produced in upward generation as far as a second turning point, and machine settings are so adjusted in the turning points as to ensure a correct pressure angle and correct flank topography during the generating process, irrespective of the different bevel angles ( alpha ). The process combines the advantages of the known completing process, by which both flanks can be ground at the same time at the cost of imposing a particular wheel body geometry with conical teeth, with those of the known two-track process for grinding both flanks with a double grinding head, by which various additional correction factors can be introduced to optimize the flank shape for convex and concave flanks.

The invention discloses conical screw rotors of a twin-screw vacuum pump. The left conical screw rotor (1) comprises a high-pressure end concave spherical face, a low-pressure end convex spherical face and four tooth faces, and the four tooth faces are a left conical tooth top face (11), a left conical oblique tooth face (12), a left conical tooth root face (13) and a left conical concave tooth face (14). The right conical screw rotor (2) comprises a high-pressure end concave spherical face, a low-pressure end convex spherical face and four tooth faces, and the four tooth faces are a right conical tooth top face (21), a right conical oblique tooth face (22), a right conical tooth root face (23) and a right conical concave tooth face (24). The left conical screw rotor (1) and the right conical screw rotor (2) can achieve cross axial meshing with the transmission ratio of 1:1. a larger air suction volume is achieved under the same structure parameters, a large effective volumetric rate is achieved, the pumping speed of the twin-screw vacuum pump is increased, the volume of a work cavity of the exhaust end is reduced, large content ratio and compression ratio are achieved, and the limit vacuum degree of the vacuum pump can be increased.

The invention relates to the field of primary crushing of needle coke (green coke), and particularly relates to a primary crushing method of coal-series needle coke. The primary crushing method is characterized in that a multi-cone hammer head is driven by a full-station mechanical arm provided with an impaction hammer to impact and crush tower-discharged green coke in a free state. The multi-cone hammer head is in an integrated structure, a drill rod is arranged at one end of the multi-cone hammer head, and a crushing head is arranged at the other end of the multi-cone hammer head and is provided with circular conical teeth and square conical teeth. Compared with the prior art, the primary crushing method of coal-series needle coke and the device adopted by the method, disclosed by the invention, have the following advantages that: (1) the problem of device appearance selection of large or ultralarge crushed material in the coal-series needle coke (the tower-discharged green coke) is solved, and the investment of a crushing device is reduced largely; (2) an impaction crushing manner is suitable for anisotropic structure characteristics of the needle coke, and is also beneficial for improving the quality of the needle coke; (3) high-efficiency transmission of impaction energy is ensured and the crushing work efficiency is improved due to a unique structure of the multi-cone hammer head; and (4) the full-station (in a three-dimensional space and five freedom degrees) mechanical arm meets station requirements during operation and is convenient to capture objects to be hammered.

The present invention provides a full chord gear, comprising: a chordal cylindrical gear and a chordal bevel gear, the addendum lines of all the teeth of the chordal cylindrical gear are on the same cylindrical surface; all of the chordal bevel gears The addendum line of the tooth is on the same conical surface; through any point on the shaft of the chord cylindrical gear or the chord bevel gear, make its axial normal section, and the normal section is the same as the chord line Cylindrical gears or the chord-line bevel gear intersect, and the boundary formed by all the teeth on it is a chord-line tooth profile. The present invention mainly utilizes a new type of chord-line tooth profile, and the chord-line tooth profile is periodically distributed in a plane with multiple The continuous closed curve of the wave, the application of this new type of chordal tooth profile is flexible and varied, covering a wide range, and can replace the entire series of involute gears.

The invention discloses a cross-shaped pipeline robot. The cross-shaped pipeline robot comprises two symmetrical cross-shaped supports, wherein the cross-shaped supports are connected through a connecting rod, a damping wheel is installed at the tail end of each support, a driving mechanism is vertically installed on each support, each driving mechanism comprises a driving frame, a conical tooth shaft and a transmission conical tooth shaft are installed in each driving frame, each conical tooth shaft is vertically connected with the corresponding transmission conical tooth shaft in a meshed mode, each spoon rod is connected with the corresponding conical tooth shaft, each transmission conical tooth shaft is connected with a conical tooth telescopic motor, and transmission is carried out and interrupted by controlling the conical tooth telescopic motors; a driving synchronous belt shaft is connected with the conical tooth telescopic motors, and a synchronous belt is connected with the driving synchronous belt shaft and a driven synchronous belt shaft; and the damping wheels are installed on the driven synchronous belt shaft, and four spoon rods and rotating spoons are installed at the tail ends of the conical tooth shafts in the circumferential direction. According to the cross-shaped pipeline robot, the rotation of the conical tooth shafts is realized through the rotation of the rotating spoons, the rotation of the transmission conical tooth shafts is driven, then the transmission conical tooth shafts connected with the transmission conical tooth shafts rotate, and the synchronous belt is connected with the driving synchronous belt shaft and the driven synchronous belt shaft to drive the damping wheels to rotate.

The invention relates to the technical field of radioactive aerosol monitoring and provides a marching type high flow aerosol sampling device. The device comprises an aerosol filter paper roller, a paper advancing mechanism, a sampling mechanism and a sample preparation mechanism, the aerosol filter paper roller is formed by folding a single piece of filter paper into a polygonal-star roller shape and provided with an upper cover and a lower cover, and the upper cover and the lower cover can be buckled into a whole through conical teeth. The device is large in filtering area, high in sampling flow, low in detection lower limit and small in operation space, meanwhile, the automatic paper advancing function is achieved, sampling can be conducted continuously, and monitoring can be conducted in real time.

The invention discloses an end face driving bevel gear tooth-shaped connecting structure which is characterized in that the outer end of the end face of a component I is an externally tangent inclined annular inclined face I, a plurality of inclined bevel gears I are evenly and outwards arranged on the annular inclined face I in a protruding mode, bevel grooves I are formed between the bevel gears I, and bevel gears are formed by the bevel gears I and the bevel grooves I; the outer end part of the end surface of the part II is a concave and inclined ring-shaped inclined surface II; the inclined plane II and the inclined plane I have the same width and inclination angle; conical grooves II which are the same as the conical teeth I in number and are matched with the conical teeth I are uniformly and inwards concavely formed in the inclined surface II, conical teeth II matched with the conical grooves I are arranged among the conical grooves II, and each conical tooth II and each conical groove II form an inwards concave bevel gear; and the component I and the component II are axially compressed, and the bevel gear and the concave bevel gear are completely meshed together. The invention has the advantages of large stress area, good transmission stability, strong wear resistance and long service life; the self-centering function is achieved, jumping generated by rotation is avoided, noise is low, and the self-centering rotary joint is suitable for being used in occasions with higher rotating speed and higher power rotary connection.