143 results about "Small tooth" patented technology

The utility model is suitable for the technical field of shavers, and provides a shaver head which comprises a support part and a shaving part, the shaving part is movably arranged at the end of the support part, the support part can be connected with a shaver handle of a shaver, and the shaving part can be attached to a human body to remove hair on the body surface. The shaving part comprises a lower cover, the lower cover is hinged to the end of the support part, side covers are fixedly installed on the two sides of the lower cover, and a pair of fixed cutters is fixedly installed between the two side covers. According to the shaver head provided by the scheme, the problems that a traditional shaver head is short in service life and prone to being blocked are solved, especially due to the use of the metal elastic piece and the connecting piece, stable sliding of the movable cutter is ensured, meanwhile, shaving smoothness is improved, trimming is smoother due to the small tooth space, and the shaving efficiency is improved. The torsion spring serves as the elastic element and provides certain elastic reacting force, interaction between the shaver head and the skin is enhanced, and therefore the shaving comfort and efficiency are improved.

The invention discloses a distributed K-H-V type involute joint module with a small tooth difference. The distributed K-H-V type involute joint module is applied to a joint on a snakelike mechanical arm. The joint module is composed of three sets of rotary driving units, a rack, an inner gear and an outer gear, in the transmission process, the eccentric shaft rotates to drive the inner gear to output at the rotating speed, and then the outer gear translates. The three groups of rotary driving units are respectively mounted in through holes formed in the inner gear and the outer gear at equal intervals; the rotary driving unit is matched with a bearing, an outer gear and an inner gear through a small motor, so that the space utilization rate of the joint module is increased; and in addition, by reducing transmission links, the power loss of the joint module is reduced, so that the joint module has the characteristics of small size and high output efficiency on the basis of having the characteristics of high rigidity and large transmission ratio of involute small tooth difference planetary gear transmission.

The utility model discloses a disc centrifuge for concentrating fermentation liquor, which comprises a centrifuge main body unit, the centrifuge main body unit comprises a mounting base and a transmission seat positioned right above the mounting base, a centrifuge shell is fixedly mounted at one end of the upper side wall of the transmission seat, and a matched disc cover is fastened and mounted at the upper end of the centrifuge shell; the horizontal fine adjustment unit comprises a plurality of wedge-shaped sliding blocks in transverse sliding connection with the mounting base and a plurality of fixing lugs fixedly mounted on the edge of the upper side wall of the mounting base, the fixing lugs are in threaded connection with corresponding threaded rods, and the threaded rods penetrate through the fixing lugs to be rotationally connected with one ends of the wedge-shaped sliding blocks; the end, away from the wedge-shaped sliding block, of the threaded rod is fixedly sleeved with a large fluted disc, the fixing lug is rotationally connected with a small tooth column meshed with the large fluted disc, and the upper side wall of the wedge-shaped sliding block is slidably connected with a second T-shaped sliding block. According to the utility model, the defects that the disc centrifuge is inclined and the fermentation liquor concentration effect is poor due to uneven ground are effectively overcome.

A gearbox includes an inner-outer gear pair having a small tooth difference, the inner-outer gear pair including: an inner gear disposed about an inner gear axis and having a first number of inner gear teeth; and an external gear having an external gear axis, the external gear arranged for orbital motion about the internal gear axis and having a second external gear tooth number, the external gear arranged for engagement with the internal gear teeth; the small tooth difference between the tooth number of the first outer gear and the tooth number of the second inner gear is smaller than one fifth of the tooth number of the inner gear. And wherein the internal gear teeth and the external gear teeth have an involute shape with no profile displacement or with a profile displacement below a value at which a working pressure angle of the internal-external gear pair will exceed a nominal pressure angle of the internal-external gear pair without application of a profile displacement by more than 20%, and wherein the internal gear teeth and the external gear teeth have an involute shape with no profile displacement or with a profile displacement below a value at which a working pressure angle of the internal-external gear pair will exceed a nominal pressure angle of the internal-external gear pair without application of a profile displacement. And wherein at least one of the internal gear teeth and the external gear teeth has an addendum coefficient of less than 0.8. Such a gearbox may provide improved efficiency.

A multi-tool, foldable grooming device that provides two different brushes on the outside (for example a conventional bristle brush on one side and a sponge-head brush on the other side) of the device and a large tooth comb, a small tooth comb, a pick comb, and a mirror that rotatably fold inside the device. Each of the large tooth comb, small tooth comb, pick comb, and mirror have tabs on their lateral edges so that when stored inside the device, the user may extract one or more of these devices by means of a finger and a thumb. The large tooth comb, small tooth comb, pick comb, and mirror are all locked inside the device until a locking button in the lower handle of the device is pressed.

The invention relates to the technical field of transmission mechanisms, in particular to a three-stage synchronous belt transmission mechanism which is characterized in that a tensioning part is located at the end of a three-stage belt wheel set and fixedly connected with a third-stage pallet fork, and when a third synchronous belt extends, the tensioning part is tensioned and pulls the third synchronous belt outwards; through mutual cooperation of the first-stage belt wheel set, the second-stage belt wheel set and the third-stage belt wheel set, goods are loaded and unloaded stably, the synchronous belt is high in precision, small in tooth space error, high in transmission efficiency, small in noise and long in service life, the defects of a traditional transmission mode in the aspects of positioning precision and transmission stability are successfully overcome, meanwhile, the stroke range of the mechanism is effectively expanded, and the transmission efficiency is improved. A new solution is provided for the development of the intelligent warehousing system; and the tensioning part compensates the elongation of the third synchronous belt caused by long-time use, so that the influence on the cargo loading and unloading stability of the top connecting plate due to the elongation of the third synchronous belt is avoided, and the transmission mechanism can load and unload cargoes stably.

The utility model discloses a stator small tooth pressure plate and an adjusting system. The stator small tooth pressure plate at least comprises but is not limited to a bearing part used for being connected with a machine base large tooth pressure plate, an inner concave part used for reducing polishing amount, and a top surface part used for being in contact with a pressure finger. The bearing parts are arranged on the two sides of the inner concave part; according to the scheme, the mode of machining the boss is adopted, gaskets do not need to be added, the problem that the gaskets are difficult to weld does not need to be solved, the risk that the gaskets fall off does not exist, and accurate adjustment of the flatness can be achieved by polishing the thickness of the boss.

The coaxial same-frame conjoined star wheel small-tooth-difference speed reducer comprises a box body assembly, a first-stage planetary speed reduction mechanism and a second-stage small-tooth-difference speed reduction mechanism, and the first-stage planetary speed reduction mechanism and the second-stage small-tooth-difference speed reduction mechanism are coaxially and sequentially arranged in the box body assembly; the first-stage planetary speed reducing mechanism comprises an inner gear ring A, a planet carrier A and an input gear shaft which are coaxially arranged, the inner gear ring A is fixedly arranged in the box body assembly, the planet carrier A is rotationally installed in the box body assembly, a plurality of planet gears meshed with the inner gear ring A are rotationally installed on the planet carrier A, and the input gear shaft is rotationally arranged in the planet carrier A; the transmission shaft is meshed with the planetary gear; the second-stage small-tooth-difference speed reduction mechanism comprises an inner gear ring B, an inner gear ring C, an output shaft and a planet carrier B which are coaxially arranged, the planet carrier B is rotationally installed in the position, on one side of the planet carrier A, of the box body assembly and is in transmission connection with the planet carrier A, and the planet carrier A can drive the planet carrier B to rotate at the same speed; the speed reducer is unique in structure and ingenious in design, the problems that an existing speed reducer is large in size and heavy in weight can be effectively solved, and the problems that the existing speed reducer is high in manufacturing cost, narrow in speed ratio range and large in transmission noise can also be effectively solved.

The utility model discloses a synchronous transmission stabilizing device which comprises a minimum tooth piece arranged on the outermost side and a maximum tooth piece arranged on the innermost side, and a plurality of middle tooth pieces with the sizes gradually increased in sequence are arranged between the minimum tooth piece and the maximum tooth piece. A plurality of meshing teeth are evenly distributed on the circumference of the minimum tooth piece, the circumference of the middle tooth piece and the circumference of the maximum tooth piece, and a fixed track toothless tooth piece is detachably arranged on the side, away from the minimum tooth piece, of the maximum tooth piece. Through the optimized and improved design of the product, when a transmission medium such as a chain or a belt is located on the innermost maximum tooth sheet, the situation that the transmission medium is disengaged from the meshing surface is effectively avoided, the chain or the belt cannot be disengaged under the road condition or misoperation of a rider, and the service life of the chain or the belt is prolonged. And transmission media such as a chain or a belt can stably work in the current driving track, so that the effects of improving the safety, totally selecting driving and guaranteeing the personal safety of a user are achieved.

The utility model relates to a windscreen wiper capable of outputting any scraping angle, relates to the technical field of windscreen wipers, and aims to solve the problem that a traditional windscreen wiper structure cannot rotate at a large angle. The windscreen wiper comprises a shell, a built-in cavity is formed in the shell, an output shaft is arranged outside the shell and penetrates into the built-in cavity of the shell, and the output shaft is connected with the built-in cavity of the shell. A built-in cavity is formed in the output shaft, the output shaft is rotationally connected into the built-in cavity, a transmission gear, a duplicate gear and a transition gear are arranged in the built-in cavity, the output shaft is sleeved with the transmission gear, the duplicate gear and the transition gear are rotationally connected into the built-in cavity, and the transition gear is arranged between the transmission gear and the duplicate gear. The transmission gear is meshed with the transition gear, the duplicate gear is provided with a large tooth and a small tooth, the small tooth is a straight gear, the small tooth of the duplicate gear is meshed with the transition gear, and a speed reducing mechanism used for driving the duplicate gear is arranged on the shell. The windscreen wiper can meet the scraping requirement of any rotating angle of the windscreen wiper.

The utility model discloses a bidirectional clutch gear set with torsion difference. The bidirectional clutch gear set comprises a small tooth part, a clutch piece and a large tooth part, wherein the small tooth part is sleeved with the clutch piece, and the large tooth part is sleeved with the clutch piece. The clutch piece comprises a movable C-shaped ring and a movable C-shaped ring, wherein the small tooth part is sleeved with the movable C-shaped ring; the fixed C-shaped ring is arranged on the small tooth part in a sleeving manner, and the fixed C-shaped ring and the movable C-shaped ring are arranged in parallel; the one-way structure is arranged on the movable C-shaped ring in a sleeving manner and is arranged in the large tooth part; and the fixed C-shaped ring and the large tooth part are relatively fixed. According to the utility model, the two groups of C-shaped rings are designed to rub with the toothed bar to realize clutch, and the one-way bearing is designed, so that different clutch torsion can be generated when the toothed bar rotates bidirectionally, boss friction used in the existing device is canceled, and noise generated during clutch is effectively reduced.

The utility model relates to the field of raft fishing wheels, in particular to a bidirectional clutch structure of a raft wheel. A bidirectional clutch structure of a raft wheel comprises a main body cover and a main body, the main body cover is sleeved on the main body, a rocker arm transmission system is arranged on the main body cover and the main body, the rocker arm transmission system comprises a large tooth, the large tooth is meshed with a small tooth, a tooth sleeve is sleeved below a tooth body of the small tooth, an annular clamping groove is arranged on the upper portion of the tooth sleeve, and the middle of the main body cover is hollow. A circular groove is formed in the inner side wall body of the hollow part, a ratchet wheel body is arranged on the circular groove, a clamping column is arranged at the top end of the ratchet wheel body, the clamping column is clamped in the circular groove, and an upper pressing body and a lower pressing body are annularly arranged on the lower portion of the ratchet wheel body. The clutch structure has the advantages that the clutch shifting button drives the clutch shaft to rotate, the clutch shaft rotates the ratchet wheel body to rotate, the clutch disc is squeezed downwards, the clutch disc receives pressure of the pressure spring, acting force is generated on the annular clamping groove, the clutch effect is achieved, the clutch shifting button rotates back, the clutch disc can reset, and the clutch structure is operated in a two-way mode.

The invention discloses an electromechanical separation water meter, comprising a water meter movement, the water meter movement also comprising thirteen meshing counting gears and thirteen gear through holes, when the eight-measurement wheel and the ten-measurement wheel are respectively installed in the eight-measurement through holes and the ten-measurement through holes, the seven-measurement small toothed disc meshes with the eight-measurement large toothed disc, the eight-measurement large toothed disc meshes with the nine-measurement small toothed disc, the nine-measurement large toothed disc meshes with the ten-measurement small toothed disc, the ten-measurement small toothed disc meshes with the eleven-measurement large toothed disc, the eleven-measurement wheel rotates synchronously with the nine-measurement wheel, and the magnetic cylinder on the eleven-measurement wheel represents 0.01m 3 Unit; when the eight-measure replacement wheel and the ten-measure replacement wheel are installed in the eight-measure replacement through hole and the ten-measure replacement through hole respectively, the seven-measure large toothed disc and the eight-measure replacement small toothed disc are meshed, the eight-measure replacement small toothed disc and the nine-measure upper toothed disc are meshed, the nine-measure small toothed disc and the ten-measure replacement large toothed disc are meshed, the ten-measure replacement small toothed disc and the eleven-measure large toothed disc are meshed, and the magnetic cylinder on the eleven-measure wheel represents 0.1m 3 The present invention has the advantages of various collection modes and adjustable collection accuracy.

The utility model provides a kind of low vibration, low noise stepping motor, including stator lamination and rotor lamination, the inside of stator lamination and rotor lamination is provided with the small tooth of improving electromagnetic coupling efficiency, the tooth slot ratio, tooth width, tooth shape and the included angle of adjacent small tooth of small tooth are all optimized improvement, the inside of stator lamination and rotor lamination is all increased and is set, it is related to the technical field of stepping motor.The utility model is designed by the tooth slot ratio, tooth width, tooth shape, the included angle of adjacent small tooth, the riveting point of stator lamination eight big poles on small tooth, the tooth slot ratio, tooth width, tooth shape, the riveting point of rotor lamination on small tooth, design optimization is carried out, reduce high harmonic, reduce tooth slot torque, make motor low-speed operation stability better, vibration and noise are smaller.

The invention belongs to the technical field of mining hard alloy, and particularly relates to a mining hard alloy tooth and a passivation method thereof.The passivation method comprises the following steps that S1, a first mining hard alloy tooth and sodium phosphate are obtained; s2, the first mining hard alloy tooth, pure water and sodium phosphate are added into a passivation machine to be passivated, and then the mining hard alloy tooth is obtained; the first mining hard alloy teeth comprise large teeth and small teeth, the diameter of the large teeth is larger than 8 mm, and the diameter of the small teeth is smaller than or equal to 8 mm. The large teeth and the small teeth are matched, so that the contact area is increased, the passivation efficiency is improved, and meanwhile, the production efficiency is also improved; alkalescent sodium phosphate is selected as a passivating agent, so that an oxide layer and impurities of the hard alloy teeth can be removed, a layer of passive film is formed, and the surface quality of the hard alloy teeth is improved; and the interior of the passivation machine is surrounded by resin, and the softness of the resin prevents the hard alloy teeth from falling off edges and corners when poured into the passivation machine.

The utility model discloses a left-right difference ratchet wheel structure which comprises a handle body head, a center installation hole is formed in the middle of the top face of the handle body head, a lower adjusting groove extending backwards is formed in the inner side wall of the middle of the rear portion of the center installation hole, and an installation through hole extending upwards is formed in the bottom face of the rear portion of the handle body head. The ratchet head is inserted into the center mounting hole in a sleeved mode, an outer tooth part is formed on the outer side wall of the ratchet head, a pawl block is inserted into the lower adjusting groove in a sleeved mode, a tooth-shaped part is formed on the front wall face of the pawl block, the tooth-shaped part is matched with the outer tooth part, one half of the tooth-shaped part is a large tooth part, and the other half of the tooth-shaped part is a small tooth part. And the size of the large tooth part is twice that of the small tooth part. Half of a tooth-shaped part of a pawl block is a large tooth part, the other half of the tooth-shaped part of the pawl block is a small tooth part, and the size of the large tooth part is twice that of the small tooth part.

The utility model provides a novel involute small-tooth-difference speed reducer, which relates to the technical field of transmission devices and is characterized in that three eccentric wheels are arranged along the axial direction of an eccentric cam shaft, and an outer gear disc A, an outer gear disc B and an outer gear disc C are respectively sleeved on the corresponding eccentric wheels and are uniformly distributed at an angle of 120 degrees in the eccentric direction; an involute inner gear ring is machined on the inner wall of the shell and connected with outer teeth of the outer gear disc A, the outer gear disc B and the outer gear disc C in a meshed mode to form a small-tooth-difference meshing pair. The novel involute small-tooth-difference speed reducer has the beneficial effects that the novel involute small-tooth-difference speed reducer is mainly meshed with the inner gear through three groups of outer gear discs which are distributed at 120 degrees, so that the load is uniformly distributed, the bearing capacity is improved, and three supporting meshing points are designed, so that the effects of dispersing the force, reducing the deformation of a transmission system and greatly improving the torsional rigidity are achieved; in addition, the speed reducer is provided with the two crossed roller bearings, overturning load force can be borne at the same time, deformation caused by overturning bending moment is reduced, and the overall overturning rigidity is improved.

The utility model discloses a hot wheel self-suction crusher which comprises an upper shell, a lower shell and a fan, wherein the upper shell and the lower shell can be turned over to be opened and closed, and a crushing bin and a discharging cavity are arranged at the bottom in the shells. The device is provided with a hot wheel crushing cutter set and a crushing disc with sharp teeth, and a driving shaft drives the crushing disc to rotate and cut feed. When the blade fan rotates, an air suction area is formed at the upper part to realize self-suction feeding, and an air blowing area is formed at the bottom to assist in discharging; a suction pipe can be inserted into the feeding suction port to suck feed, and a toothed plate is mounted on the inner wall of the upper shell to assist crushing. The crushing disc is provided with large teeth, small teeth and a middle frame, and auxiliary rods are arranged among the large teeth, the small teeth and the middle frame for hanging hammers. The sieve plate is of a semi-arc surface structure and can be replaced in a pluggable mode. The whole structure is compact and reasonable, self-suction feeding, efficient smashing and smooth discharging are achieved through cooperation of all components, the smashing efficiency is improved, and operation and storage are convenient.

The utility model belongs to the technical field of automobile seats, and particularly relates to an automobile monotonous seat angle adjuster, a seat and an automobile, the angle adjuster comprises a guide plate, a plurality of small teeth are installed on the guide plate in a sliding mode in the radial direction; a top pressing block is fixedly mounted on the unlocking square column, and an unlocking piece is mounted on the top pressing block; the jacking blocks are positioned on the inner sides of the small teeth; the large toothed plate is rotationally installed on the guide plate, a cavity is formed in the large toothed plate, the unlocking piece, the small teeth and the jacking block are all located in the cavity, and a plurality of clamping teeth meshed with the small teeth are arranged on the inner wall of the large toothed plate in the circumferential direction; an elastic structure is arranged between the guide plate and the jacking block; the free end of the unlocking square column penetrates through the guide plate to be connected with a return spring, and the free end of the return spring is hung on a hanging point of the lower seat basin connecting plate. The utility model aims to solve the problem that the adjusting function of a seat backrest fails due to the tooth sliding phenomenon during locking caused by insufficient elasticity of an elastic structure in an existing angle adjuster.

The application discloses a large internal ratchet wheel machining method, which comprises the following steps: S1, rotating a machine tool B shaft; S2, tooling a ball cutter (4) installed on the machine tool B shaft accessory with any two points on a large tooth surface of a tooling slot and any one point on a small tooth surface respectively to obtain coordinate values of each tooling point in a cutter tip coordinate system; S3, according to the intersection of a tooth root virtual circle under the cutter tip coordinate system and the connecting line of the two tooling points on the large tooth surface, the intersection point constitutes the coordinate values of a tooth root vertex in the cutter tip coordinate system, and the coordinate values of the tooth root vertex in the cutter tip coordinate system and the offset of the cutter tip coordinate system relative to a part coordinate system are obtained according to a trigonometric function relationship; and S4, the offset is used for compensating the cutter tip position deviation generated by the rotation of the machine tool B shaft. The technical effect of the application is that qualified large internal ratchet wheels are machined by compensating the cutter tip position deviation and the part tooth slot phase deviation, qualified large internal ratchet wheels are machined on a machine tool by using a common ball cutter, and production cost is saved.

This utility model is a self-balancing gearbox with small tooth difference, which includes at least two axial revolving gears and an eccentric counterweight. The number of teeth of the axial revolving gears B is different, resulting in different centrifugal forces. By adding a matching eccentric counterweight T to the existing structure, and providing specific gearbox structural requirements and installation methods, a more compact structure and smoother operation are achieved.

1. Name of this design: Body of the male head of the rope stopper. 2. Application of this design: The overall application of this design is as follows: This design is a male head of a rope stopper, which is used to cooperate with the female head of a corresponding rope stopper to tension and clamp the rope extending through it with small teeth. It can be used in footwear and clothing. The product is used in a specific application as the main body of the male connector of a rope stopper. 3. The key design features of this product are the shapes of the parts shown by solid lines in each view of Design 1 and the parts not covered by dark green in each view of Design 2. 4. The picture or photo that best illustrates the key design points: Design 1 3D diagram 1. 5. Design 1 is designated as the basic design. 6. Other matters requiring explanation: The dashed lines in the views of Design 1 and the parts covered in dark green in the views of Design 2 are for illustrative purposes only and do not constitute part of the protection claimed in this design application.

The invention discloses an automatic tensioner assembly assembling system which comprises a shell assembling work station, a large tooth frame assembling work station, a guide block assembling work station, a small tooth frame assembling work station, a spring assembling work station and an assembly assembling work station. The large tooth frame assembling work station is suitable for assembling a large tooth frame into an inner groove of a shell to form a shell assembly; the small tooth frame assembling station and the spring assembling station are suitable for assembling the small tooth frame into an inner groove of the guide block and assembling the spring into the outer wall of the guide block to form a guide block assembly, and the assembly assembling station is suitable for assembling the shell assembly and the guide block assembly to form a tensioner assembly. The oil coating process of the outer wall of the guide block is set behind the spring assembly station, oil loss can be reduced, and the problem of oil contamination in a system is solved. And the spring can be compressed during oil coating, and the outer wall of the guide block is exposed when the spring deforms, so that direct contact is facilitated for oil coating.

Bicycle sprocket (12, 212, 312, 412, 512), comprising: a gear ring element (22, 322) comprising a pivot axis (A1), a gear ring body (24) comprising a radially outer rim arranged around the rotational center axis (A1), and a plurality of toothed teeth (26) arranged at the radial outer edge; a first shift-facilitation projection (42) coupled to the sprocket element (22, 322) to engage with an inner connecting link plate (BC1) of a bicycle chain (BC) when the bicycle chain (BC) is shifted from a smaller sprocket (14) to the bicycle sprocket (12, 212, 312, 412, 512); and a second shift relief projection (42, 44, 244) coupled to the sprocket element (22, 322) to engage with an outer connecting link plate (BC2) of the bicycle chain (BC) when the bicycle chain (BC) is shifted from the smaller sprocket (14) to the bicycle sprocket (12, 212, 312, 412, 512).

The present invention provides an electric adjustment device for the shoulder of a backrest, which belongs to the technical field of backrest devices. The electric adjustment device for the shoulder of a backrest includes a motor, a large tooth plate, a large tooth plate connecting bracket, a small tooth plate 1 and a small tooth plate 2; the motor is arranged on the lower side beam of the backrest, and the motor is meshed with the large tooth plate for transmission; the top end of the large tooth plate connecting bracket is rotatably connected to the top end of the lower side beam, and the bottom end of the large tooth plate connecting bracket is fixedly connected with the large tooth plate; the top end of the small tooth plate 1 is rotatably connected to the top end of the lower side beam, and the bottom end of the small tooth plate 1 is connected to the end of the large tooth plate connecting bracket with a protrusion; the top end of the small tooth plate 2 is fixedly connected to the bottom end of the upper side beam of the backrest, and the bottom end of the small tooth plate 2 is meshed with the small tooth plate 1. The electric adjustment device for the shoulder of a backrest provided by the present invention can effectively reduce the noise problem caused by the operation of the motor, can effectively save the layout space, is conducive to the layout of other mechanisms, and the comfort is significantly improved year-on-year.

The utility model discloses an embracing type bridging coupling oil pipe centralizer which is formed by oppositely splicing a front semi-cylindrical structural body and a rear semi-cylindrical structural body which are symmetrical in structure, the structural bodies are of an integrated structure, and the two structural bodies are clamped through a plurality of steel belts. Each structural body is formed by sequentially connecting a small tooth block, an upper closing groove, a large tooth block, a middle closing groove, a middle structure, a middle closing groove, a large tooth block, an upper closing groove and a small tooth block from top to bottom; and the small tooth block, the upper closing groove, the large tooth block and the middle closing groove are all semi-cylindrical. The outer diameters of the small tooth block, the large tooth block and the middle structure are equal, and the height of the small tooth block is smaller than that of the large tooth block; the sum of the outer diameter of the upper closing groove and the thickness of the steel belt and the sum of the outer diameter of the middle closing groove and the thickness of the steel belt are equal to the outer diameter of the middle structure. The whole structure is easy to achieve, convenient to install and not prone to displacement. In addition, the manufacturing cost is low, and meanwhile the device can still be repeatedly used after pump inspection and well repair.

The present invention provides a motor retaining ring press machine, comprising: a frame, a lifting frame, a lifting device and a clamping mechanism; the clamping mechanism is arranged on the lifting frame, and the clamping mechanism includes a rotation drive assembly, a first gear, a second gear and two retaining ring clamping needles; the first gear and the second gear are both provided with a plurality of small teeth, and the first gear and / or the second gear are also provided with a plurality of large teeth, and the plurality of large teeth are located between two adjacent small teeth. The motor retaining ring press machine of the present invention uses the size difference between the large teeth and the small teeth to enable the large gear to spread the first gear and the second gear apart when the first gear and the second gear rotate, thereby driving the two retaining ring clamping needles to separate a slight distance from each other, so that the clamped retaining ring is spread apart by the two retaining ring clamping needles so that the retaining ring can be installed on the end cover, which makes the retaining ring easy to install and also helps to avoid the retaining ring from being easily damaged.

The present application relates to a mold and a cold extrusion molding method for an integrated double gear. The mold includes a lower template, a lower die seat, a limiting plate, a lower die, an upper die, a punch and an upper template. The lower die seat is arranged on the lower template; a lower die for forming small teeth and an upper die for forming large teeth are arranged on the inner side of the lower die seat. A gap for injecting lubricating oil is formed between the outer wall of the lower die and the inner wall of the lower die seat, and between the outer wall of the upper die and the inner wall of the lower die seat. The lower die is arranged on the lower template, and the upper die is arranged on the lower die; the limiting plate is annular and arranged on the top of the lower die seat; the punch is located above the lower template, and the upper template is connected to the top of the punch. The existing scheme adopts a cutting process, which requires processing two large and small teeth separately, which is time-consuming. The present application adopts a mold cold extrusion to form once, so the processing cycle is short and the efficiency is high. In the molding process, almost no excess material waste will be caused, so it has the advantages of high material utilization and low cost.

The utility model relates to the technical field of blank pressing and oil making, in particular to a blank pressing machine for oil making. According to the blank pressing machine for oil production, a first through groove and a second through groove are formed in the side walls of the two sides of a blank pressing machine body in the length direction. The first fixing block is arranged in the first through groove, and the second fixing block is arranged in the second through groove. A first gear is arranged at one end, penetrating through the first fixing block, of the rotating shaft of the first blank pressing roller. A duplicate gear is arranged at the position where one end of a rotating shaft of the second blank pressing roller penetrates through the second fixing block. When the first fixing block and the second fixing block are located at the first horizontal position, the first gear is meshed with the small teeth in the duplicate gear. And when the first fixing block and the second fixing block are located at the second horizontal position, the duplicate gear is adjusted, and the first gear is meshed with the large teeth in the duplicate gear. The blank pressing machine solves the problems that an existing blank pressing machine can only press blanks with the fixed thickness and cannot meet the requirements for different oil plants and different oil making processes, and the suitable thicknesses of the required blanks are different.

The utility model discloses a harmonic differential type small-tooth-difference speed reducer, and belongs to the field of machinery. The structure comprises an outer gear ring, a double-sided planetary gear ring, a sun gear and an eccentric circumferential cam, a double-sided planetary gear ring is adopted to be meshed with an outer gear ring and a sun gear at the same time under the constraint of a cam disc; the input shaft and the output shaft are in a strict speed reduction relation: under the condition that the outer gear ring is selected to be static, when the inner teeth of the double-sided planetary gear ring and the sun gear are meshed and roll for a circle, the angle corresponding to the tooth number difference value between the inner teeth and the sun gear is formed; when the outer teeth of the double-sided planetary gear ring and the inner teeth of the outer gear ring are meshed and roll for a circle, the double-sided planetary gear ring and the outer gear ring rotate by an angle corresponding to a tooth number difference value; numerical values of the two parties show an offset trend; the sun shaft or the outer gear ring can be selected to be static, so that the reduction ratio is larger than that of a small-tooth-difference mechanism meshed by a single gear, and the relation between the reduction ratio and the tooth height is not large; the device can be widely used in the machinery industry.