48results about How to "Good meshing effect" patented technology

The invention provides a cup-shaped harmonic gear with a common tangent type double-circular arc tooth profile. The cup-shaped harmonic gear is composed of a wave generator, a flexible gear and a rigid gear; the tooth profiles of the flexible gear and the rigid gear of the harmonic gear transmission are common tangent type double-circular arc plane tooth profile. The invention also provides a tooth profile design method of the cup-shaped harmonic gear with the common tangent type double-circular arc tooth profile; the tooth profile design method comprises taking the coning deformation of the cup-shaped flexible gear in the axial direction into account, and in order to avoid interference, performing enveloping and fitting calculation on the circular arc part of the tooth root of the rigid gear by use of the movement locus of the gear teeth of the front section of the flexible gear according to the maximum radial deformations on the front, middle and rear sections of the flexible gear and the movement locus difference of the gear teeth of the flexible gear relative to the tooth groove of the rigid gear, and performing enveloping and fitting calculation on the circular arc part of the tooth crest of the rigid gear by use of the movement locus of the gear teeth of the rear section of the flexible gear so that the flexible gear and the rigid gear are in continuous conjugate transmission in the entire engagement interval. The cup-shaped harmonic gear with the common tangent type double-circular arc tooth profile has the advantages of increased number of engaged teeth, increased engagement contact surface, high bearing capacity, long fatigue life and the like.

The present invention discloses an engagement rotor of an internal mixer, including a rotor body (4) and three ribs disposed on the rotor body (4). The three ribs are respectively of a long rib (1), a middle rib (2) and a short rib (3). The rotor is characterized in that: the long rib (1) and the middle rib (2) are same in the spiral direction, and the spiral direction of the short rib (3) is opposite to that of the long rib (1) and the middle rib (2). According to the engagement rotor of the internal mixer, the spiral direction and the angle of the short rib are changed, and the length of the short rib is increased. Compared with a conventional structure, the shortcoming that the rubber material on short rib end face can not be stirred because of a dead zone in a conventional structure is overcome, the engagement area between two rotors is increased, and the rubber mixing effect is enhanced, so that the quality of the rubber material is further improved.

The invention discloses a gear sleeve machining device and machining method. The gear sleeve machining device comprises a positioning device and a clamp device. The positioning device comprises a base, the top end of the base is fixedly connected with two sets of electric sliding rails arranged in parallel, electric sliding blocks of the electric sliding rails are fixedly connected with sliding rods which are in sliding fit with sliding sleeves, the tops of the sliding rods are fixedly connected with a supporting plate, and a screw rod drive device is fixedly connected to the center position of the supporting plate. The clamp device comprises a machining platform internally provided with two sets of sliding blocks, and the tops of the two sets of sliding blocks are fixedly connected with aleft clamp and a right clamp correspondingly. According to the gear sleeve machining device and machining method, the structure is simple, the occupied space is small, a gear sleeve can be quickly and highly accurately positioned in the vertical direction and the horizontal direction through the electric sliding rails and the screw rod drive device separately, machining errors are reduced, the engagement effect of the sliding gear sleeve and a gear is improved, using is convenient, and operation is simple.

The invention discloses a curved claw rotor of a claw type vacuum pump and a molded line design method thereof. The rotor is composed of nine curved lines: three circular arcs, three elliptic arcs andthree elliptic arc envelope lines. Molded lines are constructed at the top, tip and bottom of the claw of the rotor by adopting the elliptic arcs and the elliptic arc envelope lines. Two rotors engaged to each other are totally same and the molded lines can be correctly engaged; adjacent curved lines are smoothly connected without unsmooth connecting points, so that the mechanical property, the engaging property and the sealing property of the curved claw rotor are improved. The rotor has a smaller clearance volume, the compression power consumption is reduced effectively, and the compressionratio of the claw type vacuum pump is improved. The tip of the claw of the rotor is more flat, large in engaging range and long in engaging line, so that wear is further reduced; the rotor is small in area, and the pumping speed and the volume utilization ratio of the vacuum pump are improved; the types of the molded lines of the claw type rotor are enriched according to the rotor, and the rotoris of important significance to development of the claw type vacuum pump.

The invention relates to the technical field of resin materials, in particular to a bamboo carbon fiber phenolic resin composite material. The bamboo carbon fiber phenolic resin composite material isprepared from the following raw materials in parts by weight: 75 to 87 parts of phenolic resin, 40 to 60 parts of polyamide curing agent T31, 15 to 25 parts of modified bamboo carbon fibers, 2 to 10 parts of hydroxymethyl cellulose, 1 to 7 parts of N-methyl acetamide, 1.5 to 3 parts of AC foaming agent, 3 to 9 parts of PVC foaming regulator, 1 to 2.5 parts of brominated polyethylene, 0.3 to 1.6 parts of stearic acid, 0.4 to 3.5 parts of talcum powder, and 1.2 to 3 parts of potassium hexatitanate whisker. The bamboo carbon fiber phenolic resin composite material is excellent in mechanical performance.

The invention discloses an anti-collision protection type suction cup for an excavator based on the 5G technology. An excavator body is included, the excavator body is connected with an excavator arm, the movable end of the excavator arm is connected with a buffer assembly, and the buffer assembly is connected with the suction cup. According to the anti-collision protection type suction cup, a carrier controller is arranged on the excavator body, data transmission between the carrier controller and a 5G data transmission module is achieved through an API, data transmission between the 5G data transmission module and a networking module is achieved through an API, the networking module is connected with a remote control terminal, and the remote control terminal is used for remote control over the excavator body 1, so that remote operation work is achieved through the 5G technology, and the work efficiency is improved.

The invention provides a harmonic gear with a continuous meshing tooth profile, and provides a tooth profile design method of the harmonic gear with the continuous meshing tooth profile formed by applying a rotation transformation method. The harmonic gear consists of a rigid wheel, a flexible wheel and a wave generator, wherein the rigid wheel is a rigid inner gear; the flexible wheel is a cup-shaped cylindrical straight-tooth outer gear; the difference between the number of teeth of the rigid wheel and the number of teeth of the flexible wheel is two; the tooth profile of the rigid wheel isgenerated by shifting and equidistant of a movement track of points on a center line of the deformation end of the flexible wheel described by the rotation transformation method; and the tooth profileof the flexible gear consists of an arc tooth top with the equidistant distance as the radius of the designed rigid wheel tooth profile and a curve with smooth transition with the arc tooth top. Thedesign method has the characteristics that the tooth profile design is simple and convenient, the designed harmonic gear has the advantages of many meshing teeth, high bearing capacity, long fatigue life, small distortion of the flexible wheel, large meshing depth, high transmission precision, good stability and wear resistance, and the design method is very suitable for tooth profile design of harmonic gear transmission.

The invention provides a crack repairing device for road and bridge repairing, which comprises a vehicle body, and further comprises a stirring component fixedly connected to the top wall of the vehicle body, and a discharging component, the discharging assembly comprises a discharging pipe fixedly connected to a discharging opening of the stirring component, a material distributing plate fixedly connected to the inner wall of the discharging pipe, a quantitative material guiding component slidably connected to the inner wall of the discharging pipe, a cleaning component, a ramming assembly fixedly connected to the top wall of the vehicle body and a discharging component fixedly connected to the top wall of the vehicle body. The input end of the tamping assembly is connected with the stirring component through a belt and a belt wheel. The purpose of quantitative discharging according to the crack depth can be achieved, the situation that materials are accumulated on the road surface is avoided, and the construction cost is reduced.

The invention provides a seat backrest massage mechanism which comprises a sliding base arranged on a backrest framework, a first sliding assembly, a second sliding assembly and a third sliding assembly, the first sliding assembly, the second sliding assembly and the third sliding assembly are sequentially arranged on the sliding base in a sliding mode, and a first driving assembly is arranged between the first sliding assembly and the sliding base. A second driving assembly is arranged between the third sliding assembly and the sliding base, a massage assembly with a massage head is hinged in the second sliding assembly, a linkage assembly is hinged between the first sliding assembly and the massage assembly, a connecting assembly is arranged between the second sliding assembly and the third sliding assembly, and when the first sliding assembly or the third sliding assembly slides, the linkage assembly is hinged to the massage assembly. When the third sliding assembly slides, the linkage assembly can drive the massage assembly to turn over, and when the third sliding assembly slides, the connecting assembly can drive the second sliding assembly to slide synchronously. According to the seat backrest massage mechanism, the massage head can be turned over by different heights and can also move along the sliding base, so that massage in various modes can be realized, and the seat backrest massage mechanism has a better use effect.

The invention belongs to the technical field of packaging, and discloses a plastic kneader. The plastic kneader comprises a fixed base; a top cover is arranged on the fixed base; a press plate is hinged to the side wall of the top cover; a driving transmission cylinder is vertically arranged on the fixed base and penetrates through the top cover; the driving transmission cylinder is in flat key connection with the eccentric position of the top cover; an air pump is externally connected with the upper end of the driving transmission cylinder; a penetrating hole is formed in the fixed base; an air flue communicating with the penetrating hole is arranged inside the fixed base and externally connected with the air pump; a driven transmission cylinder is inserted into the penetrating hole; the cylinder body section, on an inner cavity of the top cover, of the driving transmission cylinder is in flat key connection with a driving stirring piece; the upper end of the driven transmission cylinder extends into the inner cavity of the top cover but is not connected with the top cover; and the section, extending into the top cover, of the driven transmission cylinder is connected with a driven stirring piece. The plastic kneader can engage materials at the dead corners and improve the overall kneading effect of the materials.