140results about How to "Large axial force" patented technology

The invention discloses a telescopic positioning device and application thereof and belongs to the technical field of telescopic connection. Engaging positioning or separation telescopic type connection is achieved through convex and concave engaging mechanisms which are evenly and continuously distributed; each convex and concave engaging mechanism comprises a convex tooth component and a groove component engaged with or disengaged from the convex tooth component; the engaging portion of each convex tooth component is provided with at least one partition groove in the cross section perpendicular to the relative displacement direction so that the two parts can stretch out and draw back and can be positioned; the convex and concave engaging mechanisms comprise the rotating engaging mechanism of non-complete round threads, the wedge expansion engaging mechanism and the rotating engaging mechanism of a non-circular cross section cam shaft; and the rotating engaging mechanism of the non-complete round threads can be applied to functional mechanisms of lifting and folding position restoration of bike seats or bike handlebars. The telescopic positioning device achieves the fast telescopic adjusting, locking and positioning through the threads or a pawl mechanism. Compared with a similar hydraulic or pneumatic mechanism, the telescopic positioning device is easy to manufacture, low in weight and reliable in performance, and cost is substantially reduced.

A seat, in particular a motor-vehicle seat, having a seat-adjusting mechanism is described. The seat-adjusting mechanism comprises a motor-driven spindle unit with a nut which has an inner profiled portion and a spindle which has an outer profiled portion. The spindle unit comprises a plurality of rollers which are arranged in planetary manner between the nut and the spindle and cooperate with the nut and the spindle. Each of the rollers has at least one outer profiled portion.

The invention discloses a building drum of an all-steel giant radial tire building machine. The drum comprises wide drum shoe collapsible mechanisms and narrow drum shoe collapsible mechanisms which are driven by a feed screw nut and embedded on a hollow main shaft, two sets of the wide drum shoe collapsible mechanisms and the narrow drum shoe collapsible mechanisms are symmetrically arranged on the right side and the left side, each set of the wide drum shoe collapsible mechanisms and the narrow drum shoe collapsible mechanisms comprises drive sleeves, a wide drum shoe connection rod, a narrow drum shoe connection rod, a left support ring and a right support ring, wherein, the left drive sleeve and the right drive sleeve are sheathed on the hollow main shaft and connected with a left nut and a right nut by a drive key, the left support ring and the right support ring are coaxially and symmetrically fixed on the two sides of the hollow main shaft; one end of the wide drum shoe connection rod and one end of the narrow drum shoe connection rod at the two sides are symmetrically articulated on corresponding drive sleeves, the other end of the wide drum shoe connection rod and the other end of the narrow drum shoe connection rod at the two sides are symmetrically articulated on a wide drum shoe seat and a narrow drum shoe seat; two ends of the wide drum shoe seat and the narrow drum shoe seat are in radial slide fit matched between a left positioning disk and a right positioning disk; drum shoulders form a whole body with the narrow drum shoe and the wide drum shoe after slide adjustment. The building drum has the advantages of good rigidity, strong stability, and fixed adjustment of the drum shoulders of the narrow drum shoe and the wide drum shoe, and the narrow drum shoe and the wide drum shoe without providing a drum shoulder telescopic mechanism.

The invention belongs to the field of underwater recovery devices. The purpose is to provide a six-degree-of-freedom underwater recovery device, which can automatically control the conical guide coverto achieve six-degree-of-freedom movement in space, thereby changing the position and attitude of the conical guide cover, thereby increasing the permissible angle of the AUV entering the conical guide cover in disguise. The technical scheme is as follows: a six-degree-of-freedom underwater recovery device is characterized in that the device comprises an upper platform, a lower platform, a docking device fixed on the upper platform for recovering AUV and six telescopic rods sequentially arranged in a W-shape between the upper platform and the lower platform to adjust the position of the docking device; the six telescopic rods have the same structure and the included angle between two adjacent telescopic rods is the same; the lower end of the expansion rod is rotatably connected with the lower platform through a first Hooke hinge, and the upper end of the expansion rod is rotatably connected with the upper platform through a second Hooke hinge.

The invention relates to a precise cold forging formed cam sheet manufacturing method. The manufacturing method includes the steps of A, pretreatment, B, cold forging forming and C, thermal treatment, wherein in the step A, a steel wire rod or a steel bar is annealed, drawn and lubricated, so that a first blank suitable for cold upsetting forming is obtained; in the step B, a cam sheet is forged through a horizontal or vertical forging machine, and the cold forging forming step includes an expansion and extrusion procedure. Due to the adoption of the expansion and extrusion technology, acquisition of a ball bearing steel cold forging cam is possible for the first time; compared with the traditional upsetting technology, forging force is greatly reduced, the cold hardening speed is low, cracks are not likely to generate, the service life of a die is greatly prolonged, a metallographic structure can not be changed in the cold forging process, and a surface structure is free of the carbon insufficiency risk; due to the fact that a finally-used outline is obtained through precise extrusion or finishing directly, the outline of the cam does not need to be ground, and equipment investment and part cost are greatly reduced.

A bearing, which is suitable for a wind turbine, with a lubricant collection system is provided. The bearing comprises a first bearing component with a first contact face and a first front face. It furthermore comprises a second bearing component with a second contact face and a second front face. The first front face is coupled with the first contact face; the second front face is coupled with the second contact face. The first bearing component and the second bearing component are movable relative to each other. The first contact face and the second contact face are prepared and arranged in a way to accommodate a lubricant. Furthermore, the bearing comprises a scraper, which is attached to the first front face and is in contact with the second front face. Finally, the invention also relates to a method of collecting a lubricant leaking out of a bearing, wherein the bearing is suitable for a wind turbine and comprises a first step of scraping off the lubricant escaping from in-between the first contact face and the second contact face, and a second step of guiding the scraped-off lubricant to a lubricant collection device by means of gravitational force.

The invention discloses a waterproof self-locking radio-frequency coaxial connector assembly. The assembly comprises male and female radio-frequency coaxial connectors; the male connector comprises a cylindrical clamping jaw, a bush and a thread sleeve; a conical hole and a clamping jaw annular bulge are arranged at the front end of a cylindrical body of the clamping jaw; the clamping jaw annular bulge is provided with an outwards tilted radial conical surface which is tilted outwards and radially; an outer threaded section is arranged on the outer wall surface of the bush; the thread sleeve is provided with an inner threaded section and a first thread sleeve annular bulge which is bulged inwards; the thread sleeve is in threaded connection with the outer threaded section of the bush through the inner threaded section; the first thread sleeve annular bulge props against the outer conical surface when the thread sleeve is moved forwards through manual screwing; the outwards tilted radial conical surface of the clamping jaw props against a female annular bulge; the assembly further comprises a cylindrical waterproof sleeve made of an elastic waterproof material; and two ends of the waterproof sleeve tightly sleeve a female outer conductor and a cable respectively. According to the assembly, the female and male connectors are not mutually rotated and moved after being inserted and combined, so that stable dynamic intermodulation and stable radio-frequency signal transmission are achieved and the waterproof effect is good.

The invention relates to the technical field of turbine engines, and provides a centrifugal compressor air entraining structure and a gas turbine engine. The air entraining structure comprises a centrifugal impeller disc, a baffle and an annular partition plate, the baffle and the centrifugal impeller disc form a stator gap and a back cavity, the stator gap communicates with the back cavity, the annular partition plate is connected to the baffle and located between the centrifugal impeller disc and the baffle, the annular partition plate is provided with a through hole right opposite to the stator gap so that airflow at an outlet of a centrifugal impeller can pass through the stator gap and the through hole to flow into the space between the annular partition plate and the baffle, airflowsurrounding the annular partition plate is formed, the flow direction of the airflow between the centrifugal impeller disc and the annular partition plate is outward in the radial direction, the coriolis force direction is opposite to the airflow tangential speed direction, influences of centrifugal force produced by airflow tangential movement are weakened, radial pressure drop of airflow of theback cavity can be reduced, the average static pressure of the back cavity can be increased, and therefore forward axial force of the back cavity of the centrifugal impeller disc is increased.

A method for producing a tube arrangement for the transport of tempering medium, in which base body sections are provided, which have congruently configured separating surfaces, wherein at least one functional element on at least one base body section is arranged in such a way that it can be in contact with the tempering medium, whereafter the base body sections are joined along the separating surface and bonded to one another to form the tube arrangement.

A structure for aviation gas turbine rotor supporting point ball bearing axial pre-load includes a main bearing, an auxiliary bearing, a disc spring, and an adjustable pad, wherein the auxiliary bearing is fixed on a gas turbine rotor and shares a bearing inner ring with the main bearing, the outer ring is fixed on a stator in the manner of floating or clearance fitting, one end of the disc spring sticks tightly against the outer ring end face of the auxiliary bearing, the other end of the disc spring sticks tightly against the end face of the adjustable pad, and the adjustable pad is fixed on the stator. The structure has the advantages of being applicable to different aviation gas turbines, meeting the need of rotor supporting point ball bearing axial pre-load, improving the loading condition of the ball bearing, and improving the reliability of the ball bearing. The structure is simple in structure, easy for assembly, and high in environmental adaptability and reliability, can pre-add a large axial force, can apply different preload according to the requirements of different gas turbine axial forces; and effectively improves the applicability of the main bearing.

The invention discloses a mechanical locking structure for leveling cylinder. The mechanical locking structure for leveling cylinder comprises a hydraulic cylinder and a screw mechanism, wherein a piston rod is arranged in the hydraulic cylinder; the piston rod and piston are integrally formed; the piston rod is fixedly connected with a ball screw pair; the ball screw pair is connected with the upper part of the hydraulic cylinder in the operational process in the hydraulic cylinder; the middle part of the piston rod is provided with a containing part; the ball screw pair in the hydraulic cylinder penetrates through the containing part; the piston rod is fixedly connected with the ball screw pair; one end of the ball screw pair is provided with a concave disk; and the screw mechanism can compact the concave disk and lock the ball screw pair in any position in the whole stroke of the hydraulic cylinder, so that the piston rod cannot retract.

The invention provides a bearing seat and a drying machine using the same. The bearing seat is provided with a self-service lubrication device which is relatively fixedly arranged with a shell, wherein the self-service lubrication device comprises an oil storage cavity; a piston and a press rod used for driving the piston to move downwards are arranged in the oil storage cavity; the self-service lubrication device further comprises an oil transmission tube communicating with the oil storage cavity; and the oil transmission tube communicates with an oil nozzle in the bearing seat. The problem of influence on the working efficiency due to difficult oil injection for lubrication for the bearing seat of a fan on the drying machine is solved.

A special hydraulic tool for installation and disassembly of a cantilever type impeller mainly comprises an adjusting nut capable of being connected with an impeller center bolt in matching mode, an inner cylinder and an outer cylinder which are mutually matched are sleeved in the adjusting nut, and an oil pressure cavity communicated with an external hydraulic pump is formed between an inner cylinder sleeve and an outer cylinder sleeve. A sleeve capable of abutting against the impeller end wall is connected with the connection center bolt side of the adjusting nut through threads. An inner sealing ring and an outer sealing ring are arranged at the position of the connection gaps at two ends of the inner cylinder sleeve and the outer cylinder sleeve, and a poking rod capable of being matched with an impeller locking nut in matching mode and locking the impeller locking nut is configured on the sleeve. The special hydraulic tool has the advantages of being simple in structure, light in weight, capable of providing large axial force, convenient to install and disassemble and the like.

A special withdrawal tool for an automatic transmission oil seal belongs to the technical field of special automobile tools, and particularly relates to a special tool for dismantling the automatic transmission oil seal of Toyota A540. The special withdrawal tool is formed by a dismantling bolt, a tensioning arm, a spring, a central part and a pin. The dismantling bolt is connected with the central part through trapezoid threads, so the oil seal is removed from an automatic transmission through the axial force which is provided by screw drive. A cylindrical boss is arranged at the lower end of the removed bolt; and a cylindrical hole is processes at the right side of the tensioning arm, the spring is installed in the cylindrical hole, and the pin on the spring side is tightly pressed by one end of the spring through the spring force. The special withdrawal tool can realize the undamaged dismantling of the automatic transmission oil seal of Toyota A540, and has the characteristics of simple structure, convenience in operation, safety, reliability, low cost and the like, and is also suitable to dismantle the similar automatic transmission oil seals.

The invention discloses a cable arranging device. The cable arranging device comprises pulleys, connecting plates, a polished rod, a sleeve, guiding rods, pressing rods, guiding rod fixing frames, guiding rod pressing frames, a shifting fork, a linear bearing, a linear bearing block, a screw, a nut and a nut connecting plate, wherein cable arranging grooves are formed in surfaces of the pulleys, the sleeve with a stopping edge arranged at one end is sleeved with the pulleys, the other end is locked by a lock nut, the linear bearing is sleeved with the sleeve and sleeved with the linear bearing block, one end of the sleeve is fixed by the linear bearing block, side plates are arranged on two sides of the shifting fork, a semi-circular support is arranged in the middle, the other end of the sleeve is fixed by the semi-circular support in the middle of the shifting fork, the polished rod is sleeved with the linear bearing, and the linear bearing can rotate around the central axis of the polished rod and move in the axial direction of the polished rod. Axial guidance of the cable arranging device can be realized by the aid of the polished rod, and the larger radial force can be borne, so that damage caused by overlying due to tension to cables can be avoided.

The invention provides a speed reducer structure, which belongs to the technical field of machinery, and solves the problems that an existing speed reducer is poor in transmission precision and is short in service life. The speed reducer structure comprises a housing, a flange, an input shaft, a transmission shaft and an output shaft, wherein the two ends of the transmission shaft are separately connected in the housing through a bearing I and a bearing II; the two ends of the output shaft are separately connected in the housing through a bearing III and a bearing IV; a coaming is arranged inthe housing, and a mounting cavity is enclosed in the housing; an opening is formed in the end surface of the housing, and the edge of the opening is detachably connected with an end cover; both the bearing I and the bearing III are arranged on the end cover; both the transmission shaft and the output shaft are positioned in the mounting cavity; a hypoid gear is arranged on the input shaft; a bevel gear which is engaged with the hypoid gear is arranged on the transmission shaft; and the dimension of the bearing II is greater than that of the bearing I. The bearing II can bear greater axial bearing force relative to the bearing I, so that stable and consistent transmission efficiency can be kept, and therefore, the speed reducer structure has relatively high transmission precision, and theservice life of the speed reducer structure is prolonged.

The invention discloses a bamboo chip carbonizing and color mixing device which comprises a rack, a roller assembled on the rack, and a driving mechanism which is assembled on the rack and is used for driving the roller to rotate, wherein the roller is provided with a feeding/discharging mechanism used for loading and unloading bamboo chips; a heating assembly is fixedly assembled in the roller; the heating assembly comprises a supporting shaft and multiple electric heating tubes assembled on the supporting shaft; the roller comprises a cylinder, a fixing shaft which is fixedly connected to one end of the cylinder, and a hollow shaft which is fixedly connected to the other end of the cylinder; the fixing shaft and the hollow shaft are respectively arranged on the rack by virtue of a bearing assembly; one end of the supporting shaft is rotationally connected with the fixing shaft; the other end of the supporting shaft penetrates out of the hollow shaft and is fixedly arranged on the rack by virtue of a fixing assembly; and the fixing shaft is connected with the driving mechanism by virtue of a coupling. The bamboo chip carbonizing and color mixing device disclosed by the invention has the advantages of simple structure, low cost, small occupied space, long service life, stability and reliability in operation and the like.

The invention relates to the technical field of household appliances, in particular to a spraying type washing machine which can wash and dry clothes. The washing machine comprises a motor, a water containing cylinder, a rolling cylinder arranged in the water containing cylinder, and a water and gas discharging system arranged on the rolling cylinder, and is characterized by also comprising a washing hand consistent to a central axle direction of the water containing cylinder, wherein the washing hand is connected with a retraction device. Usually, an axial washing hand is arranged on a basic mechanism of a conventional washing machine, so that axial force is added, clothes can be pushed and beat fully. Besides, an unconventional water inlet manner is adopted and high-pressure hyperfine water flow spraying is adopted, and the washing effect is improved greatly. Additionally, washing water containing dirt is purified through a sewage treatment system, the water is injected into the rolling cylinder again for recycling utilization, and the washing water can be saved substantially. Besides, a high-pressure gas is sprayed to dry the clothes through a high-pressure gas inlet after washing, and the washing efficiency is improved.

The invention relates to steel slag processing equipment, in particular to a grade feeding device of a roller mill used for processing steel slag. The grade feeding device comprises a bracket, wherein the bracket is provided with a motor and an outer tube; the bottom end of the outer tube is provided with a bottom plate fixedly connected with the outer tube; the top end of the outer tube is provided with a top plate; the upper part of the outer tube is provided with a first discharge hole and a second discharge hole; the inner part of the outer tube is provided with a sieve tube; the outer wall of the sieve tube is provided with a first spiral blade; a lower partition plate is arranged between the lower end of the sieve tube and the outer tube; a feeding cavity is arranged between the lower partition plate and the bottom plate; an upper partition plate is arranged between the upper end of the sieve tube and the outer tube; the upper partition plate is positioned between the first discharge hole and the second discharge hole; a rotary shaft coaxial with the sieve tube is arranged in the sieve tube; the rotary shaft, the bottom plate, the rotary shaft and the top plate are rotatably connected; the rotary shaft is connected with the motor; a second spiral blade is arranged between the rotary shaft and the sieve tube; and the first spiral blade and the second spiral blade are the same in rotary direction. The grade feeding device has the beneficial effect of improving steel slag production efficiency and saving production cost.

The invention discloses an automobile synchronizer. The automobile synchronizer comprises a synchronizing gear hub (1), a synchronizing sliding sleeve (2), a synchronizing operating lever (3), a synchronizing ring (4) and a synchronizing conical hub (5). The synchronizing gear hub (1), the synchronizing operating lever (3), the synchronizing ring (4) and the synchronizing conical hub (5) are sequentially arranged in the synchronizing sliding sleeve (2) from head to end, the synchronizing sliding sleeve (2) is arranged on the synchronizing gear hub (1) in a sleeved mode and is connected with the synchronizing gear hub (1), an annular groove (6) is formed in the inner wall of the synchronizing sliding sleeve (2), the synchronizing sliding sleeve (2) is arranged on the synchronizing ring (4) in a sleeved mode and is connected with the synchronizing ring (4), and one side face of the synchronizing ring (4) is in transmission connection with the synchronizing conical hub (5).

The invention discloses a novel drilling driver comprising an electrohydraulic composite tube (11) at the rear end, a drive device used for driving the drilling driver to move forward, a drive motor (13), an exciter (14), and a drill bit (15). The drive motor (13), the exciter (14) and the drill bit (15) are fitly connected in sequence. Two centralizers (12) are connected to front and rear ends of the drive device respectively. The drive device and the centralizers (12) are all provided with inner passages communicated with the electrohydraulic composite tube (11) and allowing drilling fluid to pass. The drive device further comprises a passage B (2) allowing returning fluid to flow through. The novel drilling driver has the advantages that land drilling rigs or marine drilling platforms are no longer used together in the process of oil-gas well exploration and development, continuous drilling is done using the drilling driver, drilling fluid circulation and high-speed communication are achieved through the electrohydraulic composite tube, and safe, efficient and economic drilling is maximally achieved.

The invention discloses a twin-worm drive swing driving device which comprises a base and a swing bearing. The swing bearing comprises an inner ring, an outer gear ring and balls, the balls are embedded between the inner ring and the outer gear ring, the inner ring is fixed above a base ring of a base, a first shaft housing and a second shaft housing are symmetrically arranged on the outer side of the base ring of the base, the axis lines of the first shaft housing and the second shaft housing are spatially perpendicular to the axis line of the base ring, a first worm is mounted in the first shaft housing, a second worm is mounted in the second shaft housing, and both the first worm and the second worm are engaged with the outer gear ring. The two worms are used for driving the outer gear ring of the swing bearing, translational acting force of the two worms on the outer gear ring is mutually offset, the gap between each worm and the outer gear ring is 'eliminated', and the rotation angle of the outer gear ring is accurately positioned. The twin-worm drive swing driving device is simple in structure and reasonable in design, and can be widely applied to industries such as engineering machinery, building machinery and solar photovoltaics.

The invention relates to a hydraulic chuck for a drilling machine, in particular to a double-wedge-shaped hydraulic chuck for a drilling machine. The double-wedge-shaped hydraulic chuck for the drilling machine is applied to the drilling machine for tightly clamping a drill rod arranged on a rotating device, transmitting the torque to the drill rod and realizing the rotating movement of a drilling tool. The double-wedge-shaped hydraulic chuck comprises an inner cylinder body, an inner cylinder body sealing ring, a back outer cylinder body, a back ring sleeve, an inner cylinder body-ring sleeve sealing ring, a buffer gasket, double-wedge-shaped slips, a spring group, an outer cylinder body connecting screw bolt group, a front ring sleeve, a front outer cylinder body, a front cylinder body-front ring sleeve connecting screw group and a buffer gasket locking screw group. The double-wedge-shaped hydraulic chuck for the drilling machine has the advantages that the double-wedge-shaped slip clamping is realized through the pressure of hydraulic oil, the double-wedge-shaped slip releasing is realized through the spring reset force, the structure is novel and reasonable, the double-wedge-shaped hydraulic chuck is of a double-wedge-shaped slip structure, two-way clamping is adopted, the clamping force is great, the clamping is fast, the structural dimension is small, and in addition, the axial stress is zero; after the drill rod is released, the chuck is released only through the spring reset force; an oil path of the double-wedge-shaped slip structure is a single loop, the structure is simple, and the control is simple and convenient.