80results about How to "Save radial space" patented technology

A voice coil motor of miniaturized type is featured as applying simple design on radial size of motion-carry base and new material for front and rear spring plates, using separation design on left and right branch plates of said rear spring plate and optimum design on shape as well as distribution of permanent magnetic unit, applying convex-concave fastening design on front-back cover of shell and between front covers for realizing miniatured- size of voice coil motor.

The invention belongs to the field of railway locomotive vehicle braking technologies, and relates to a railway locomotive vehicle braking clamp unit. The clamp unit comprises a box body, a braking cylinder, a braking force multiplication mechanism, braking clamp arms, a buffering device and a brake lining gap adjustor, wherein the braking cylinder is fixedly connected with the box body, a reset taper spring is located between a cylinder cover of the braking cylinder and a diaphragm plate, an eccentric shaft and a connecting rod form an eccentric shaft type lever, the driving braking clamp arm is hinged to the eccentric shaft, the driven braking clamp arm is hinged to the box body, the force bearing end of a lever hook and the end of a connecting rod of the braking force multiplication mechanism are spaced with a certain distance, the force applying end of the lever hook is connected with a push rod, and the buffering device is located between the box body and the force bearing end of the lever hook. The transverse width of the braking clamp unit is small, the piston diameter and the multiplying power of the clamp arms are reduced, the requirement of a spring stopping braking cylinder for an energy accumulating spring is lowered, and the size of the railway locomotive vehicle braking clamp unit is reduced. The railway locomotive vehicle braking clamp unit is wide in application range, high in modularization degree and complete in function.

The invention provides a parallel leg structure for a legged robot capable of running at a high speed, relating to a parallel leg structure. The parallel leg structure provided by the invention solves the problem of relatively large energy consumption of the existing legged robot capable of running at a high speed because of the movement rule of periodic acceleration and deceleration. Two joint leg loading and hoisting steel plates are symmetrically and fixedly arranged on outer walls of two sides of a scapula; the upper end of a thigh is articulated with the lower part of the scapula; the lower end of the thigh is articulated with the upper end of a shank; a sole is fixedly arranged at the lower end of the shank; a parallel short connecting rod is articulated with the upper part of the thigh; the other end of the parallel short connecting rod is articulated with the upper end of a parallel long connecting rod; a horizontal valve controlled hydraulic cylinder is installed on the scapula and is horizontally arranged; a hydraulic rod of the horizontal valve controlled hydraulic cylinder is connected with the articulated point of the parallel short connecting rod and the parallel long connecting rod; a vertical valve controlled hydraulic cylinder is installed on the scapula and is vertically arranged; and a hydraulic rod of the vertical valve controlled hydraulic cylinder is connected with the articulated point of the parallel short connecting rod and the parallel long connecting rod. The parallel leg structure provided by the invention is used for the legged robot.

The invention discloses a wet type double-clutch unit which comprises an odd-numbered shaft clutch and an even-numbered shaft clutch, wherein the two clutches work independently; each clutch comprises a diaphragm spring which is contacted with a hill-like supporting bulge of an axial pressing disc, and the axial pressing disc is forced by deformation of the diaphragm spring to move axially, so that a friction plate below the axial pressing disc is compressed to transmit power to dual discs. The wet type double-clutch unit has the advantages as follows: compression force is transmitted through deformation of the diaphragm springs, and compared with the conventional compression force transmission under hydraulic control, higher response speed is provided during gear shifting; the structure facilitates mounting, and the wet type double-clutch unit has good reliability and fatigue durability.

The invention discloses a six-pole mixed magnetic bearing. The rotors are coaxially sleeved with left stator iron cores and right stator iron cores which are symmetrically arranged in the axial direction, left stress discs are arranged at the left ends of the rotors, and right stress discs are arranged at the right ends of the rotors, and circular ring-shaped permanent magnets are laminated between yoke portions of the left stator iron cores and the right stator iron cores; the permanent magnets are axially magnetized, six stator magnetic poles are uniformly distributed in each of the left stator iron cores and the right stator iron cores in the circumferential direction, the six stator magnetic poles of each left stator iron core are aligned with the corresponding left stress disc in theradial direction, and the six stator magnetic poles of each right stator iron core are aligned with the corresponding right stress disc in the radial direction; and the two radial control coils whichare in face-to-face and radial direction on the same stator iron core in the left stator iron core and the right stator iron core are connected in series with a same winding direction, and the two radial control coils which are in axial-facing direction on the left stator iron core and the right stator iron core are connected in series with an opposite winding direction. According to the six-polemixed magnetic bearing, suspension force and displacement characteristics and suspension force and current characteristics tend to be linear, and coupling between two radial degrees of freedom is reduced.

The invention relates to an integrated bearing supporting structure for an aviation engine. The integrated bearing supporting structure comprises a mounting edge, a first bearing supporting spoke, a second bearing supporting spoke, a first bearing supporting seat and a second bearing supporting seat, one end of the first bearing supporting spoke is connected to the mounting edge, the other end of the first bearing supporting spoke is connected to the first bearing supporting seat, one end of the second bearing supporting spoke is connected to the mounting edge, the other end of the second bearing supporting spoke is connected to the second bearing supporting seat, the first bearing supporting seat is used for supporting a first bearing, the second bearing supporting seat is used for supporting a second bearing, and the quantity of the mounting edge is 1. The integrated bearing supporting structure for an aviation engine has the advantages of part quantity reduction, occupied space reduction, reduced weight, and convenience for dismounting and maintaining.

The invention discloses a composite propulsion helicopter transmission system which comprises a main rotor transmission system and a two-wing propeller transmission system in transmission connection with the main rotor transmission system, and further comprises a belt transmission system in transmission connection with the main rotor transmission system. The problems that an aviation piston engine is large in vibration, low in reliability, poor in transmission performance and the like during non-load starting in the prior art are solved.

The invention discloses a motor and speed reducer integrated case and a casting and welding method thereof. The case comprises an outer case body and an inner case body, wherein the outer case body comprises a motor case body and a speed reducer case body which are integrally formed through high-pressure casting; the inner case body is nested in the motor case body, a spiral water channel rib is arranged on the outer surface of the inner case body, and spaces of the spiral water channel rib form a spiral water channel by being matched with an outer wall of the inner case body and the inner wall of the motor case body. According to the motor and speed reducer integrated case, the integration degree is increased, end covers are reduced, the cost is reduced, the axial space is compressed, andthe NVH characteristic of a system is improved. According to the casting and welding method, the complexity of a manufacturing process is reduced through high-pressure casting, the batch efficiency is high, the wall thickness of the case is reduced, structures of process holes are omitted, and the radial space is compressed.

The invention discloses a built-in clutch and a combined motor with the same. The clutch comprises a fixed shell and a clutch component in the shell. The shell comprises a shell body and a cover. The clutch component comprises a magnetic drive member, a non-magnetic driven member and a magnetic slider. The drive member and the driven member are connected concentrically. The drive member is a cam structure with first clamping parts on the outer side. The first clamping parts can drive the slider to rotate and guarantee that the slider does not move radially. The driven member is provided with at least one drive block relative to the outer side of the cam. The inner side of the drive block is provided with second clamping parts. The shell adjacent to the drive member is provided with a magnetic inner annular face. The end face of the slider always attaches to the inner annular face of the shell. The side of the slider always attaches to on the inner side wall between the first clamping parts. When the clutch is closed, the slider is located between the first clamping parts and the second clamping parts, and the drive member can drive the driven member to rotate simultaneously.

The invention provides an assembly structure of an insulating rolling bearing. An insulating bearing sleeve of the assembly structure consists of a bearing sleeve and a sleeve ring, wherein an insulating washer is arranged between radial matching surfaces of the bearing sleeve and the sleeve ring, a polyimide film layer is padded between axial matching surfaces of the bearing sleeve and the sleeve ring, an annular groove is formed at a joint seam of the other radial end faces of the bearing sleeve and the sleeve ring, and epoxy resin strips are filled in the groove; and the insulating bearing sleeve is combined with the an end cover through a belleville spring and hex bolts, an insulating washer is arranged between the radial matching surfaces of the insulating bearing sleeve and the end cover, an insulating pipe is sleeved at an axial matched part of the hex bolts and the end cover, and an insulating washer is arranged between the radial matching surfaces of the belleville spring and the end cover. By adoption of the insulating bearing sleeve, and insulating devices are arranged between the insulating bearing sleeve and a radial abutted surface of the end cover, and between a fastening piece of the insulating bearing sleeve and the end cover and an abutted surface of the end cover, the assembly structure disclosed by the invention can reliably block a shaft current path between a bearing assembly and the end cover, and then protect the bearing from electro-corrosion. The assembly structure disclosed by the invention saves the radial space, and is particularly suitable for occasions on which the radial space for bearing assembly is limited.

The invention relates to a wheel edge planetary gear speed reducer for an electric formula racing car. The wheel edge planetary gear speed reducer for the electric formula racing car comprises a planetary gear mechanism, a double-web planet carrier mechanism and a gear box mechanism. According to the wheel edge planetary gear speed reducer for the electric formula racing car, the form of planetarygear sets arranged in series is used to replace the form of a single planetary row or a plurality of planetary rows in the prior art, so that the structure of the speed reducer is simplified, and therequirement on a large speed ratio of the speed reducer in a limited wheel edge installation space of the electric formula racing car is realized.

The invention discloses a fuse three-degree-of-freedom recoil safety mechanism. The fuse three-degree-of-freedom recoil safety mechanism comprises an upper inertia cylinder, an upper inertia spring, a body, a secured piece, a middle inertia cylinder, a middle inertia spring, a lower inertia cylinder, a lower inertia spring and a bottom cover, two channels which vertically communicate with each other are arranged in the body, the secured piece is arranged in the channel which is vertical to the axis of the body, the upper inertia cylinder, the upper inertia spring, the middle inertia cylinder, the middle inertia spring, the lower inertia cylinder and the lower inertia spring are sequentially connected in series in the channel parallel to the axis of the body, the two ends of an inertia mechanism are limited by the body and the bottom cover, and the bottom cover is fixedly connected with the body. The fuse three-degree-of-freedom recoil safety mechanism is simple in structure, small in occupied radial space, low in cost, high in applicability, capable of recognizing launching overload of 30 g or even lower and capable of guaranteeing safety when a fuse falls to a hard target and a soft target in any posture.

The invention relates to a gear combined type variable-speed transmission device. The gear combined type variable-speed transmission device consists of an input shaft, an output shaft, an intermediate shaft, clutches (or synchronizers) and gears. More than 6 clutches or one clutch and more than 6 synchronizers and more than 9 gears are combined in serial-parallel connection modes, the gear number is remarkably increased, and the number of shifting gears is decreased. Due to the fact that each pair of gears has small speed ratio and adopts a short transmission shaft structure, the rigidity of a transmission is improved, the radial and axial sizes are reduced, and the transmission is compact in structure and high in mechanical efficiency. The invention further provides a reverse gear device used on a mechanical variable-speed transmission mechanism.

The invention relates to a crane wheel which comprises a cylindrical hub, a circular shaft seal end cover is fixed to one side of the hub, an annular shaft seal baffle ring is fixed to the other side of the hub, an inner gear ring is arranged on the inner surface of the hub, and a planetary speed reduction module is arranged in the hub. The planetary speed reduction module comprises a central rotating shaft, a first-stage planet carrier, a second-stage planet carrier, a first-stage sun gear and a second-stage sun gear, and planet gears on the first-stage planet carrier and the second-stage planet carrier are meshed with an inner gear ring of the hub; the inner gear ring is arranged on the inner surface of the hub, the planet wheels on the first-stage planet carrier and the second-stage planet carrier are both engaged with the inner gear ring of the hub, so that the output shaft of the driving motor drives the hub to rotate through two-stage planet speed reduction, and the structure of the wheel is compact through the mode that the planet speed reduction module is integrated in the hub; the size of a crane traveling mechanism can be effectively reduced, so that the crane wheel is compact in structure.

The invention relates to a ratchet wrench with a head capable of being shrunk. The ratchet wrench comprises a body, a driving piece, a ratchet device and a reversing switch, wherein the body comprises the head, a connecting segment connected with one surface of the head, and a handle body arranged at the connecting segment oppositely to one end of the head, and a longitudinal connecting part connected with one surface of the head is formed at one end of the connecting segment; the driving piece is rotatably arranged at the head of the body; the ratchet device can be selectively meshed with the driving piece; and the reversing switch is pivoted with the driving piece and can control the ratchet device, a stirring ring of the reversing switch is tied and exposed outside the first surface of the head of the body and corresponds to the outer surface of the head of the body, and therefore, a user can stir the stirring ring of the reversing switch by the outer surface of the head of the body, thereby effectively reducing the radial distance of the head and achieving the effect of shrinking the head of the body.

The present invention discloses a parallel turbine flow sensor, including a casing, an impeller assembly, and front and rear flow guiding members. The front guiding member, a front guiding member pressing member, the impeller assembly, and the rear guiding member, and the rear guide member pressing member are sequentially installed from one end of the housing. A detection groove is disposed on anouter side wall of the casing, and a signal detector in which an iron core is parallel to a rotating shaft of the impeller assembly is disposed in the detection groove. A signal output end of the signal detector is connected to a wire, and the wire is connected to a signal input end of a signal amplifier. A sealing block is mounted in the detection groove outside the signal detector. An expanded core perpendicular to the iron core of the signal detector is disposed between the other end of the signal detector relative to the other end of an outlet and an inner wall of the detection groove. Theexpanded core corresponds to the position of the impeller assembly, and the upper end of the expanded core and the right end of the iron core of the signal detector are fitted. A fastening seal assembly is disposed at the outer end of the through hole through which the wire passes.