59results about How to "Achieve radial positioning" patented technology

The present invention relates to a rotor, a magnet steel fixing structure thereof, and a motor. The motor magnet steel fixing structure includes a rotor core, magnet steels sequentially distributed in the circumferential direction of the rotor core, and stoppers located between two adjacent magnet steels, wherein each stopper includes a connecting portion and two pressing plates both fixedly connected with the connecting portion, the two pressing plates are respectively pressed on two adjacent magnet steels, and the connecting portion is in positioning connection with the rotor core in a radial direction through a concave-convex cooperative structure. In the magnet steel fixing structure, the connecting portion is in positioning connection with the rotor core in a radial direction through a concave-convex cooperative structure, and the structure required by the concave-convex cooperative structure can be formed in a rotor core punching process, so that compared with the prior art, a processing flow is reduced, the rotor core production process is simplified, thereby the production of a whole rotor is simplified, and rotor production efficiency is improved.

The invention belongs to the technical field of construction of building structures, and in particular relates to a grouting sleeve assembly. The grouting sleeve assembly comprises a sleeve body, an exhaust pipe and a grouting pipe, wherein the sleeve body is provided with an exhaust hole and a grouting hole; the exhaust pipe and the grouting pipe are respectively connected with the exhaust hole and the grouting hole; an air permeable plugging device used for preventing a grouting material from overflowing is arranged at the exhaust outlet of the exhaust pipe; a non-return device used for preventing backflow of the grouting material is arranged at a grouting mouth of the grouting pipe. In the grouting process, the air in the sleeve body can be smoothly discharged outside through the air permeable plugging device, and the air permeable plugging device provides pre-resistance so as to enable the interior of the grouting sleeve to be densely grouted; the air permeable plugging device canprevent the grouting material from overflowing when the sleeve is grouted or after the sleeve is fully grouted; after the sleeve is fully grouted, if the slurry in the sleeve body has a tendency to backflow, the non-return device can effectively block a grouting channel so as to prevent the slurry from backflowing; the grouting sleeve assembly guarantees dense grouting while achieving the aim of reducing waste, and also guarantees the connection performance.

The invention relates to a nonlinear large-aperture optical element clamping device, in particular to a nonlinear large-aperture optical element clamping device capable of achieving definite value axial load application. The nonlinear large-aperture optical element clamping device capable of achieving definite value axial load application solves the problem that harmonic conversion efficiency of a nonlinear large-aperture optical element is reduced because the nonlinear large-aperture optical element deforms easily under the action of gravity and clamping force. The nonlinear large-aperture optical element is placed on a supporting frame; locating edge blocks are arranged on the periphery of the supporting frame in a distributed mode and are fixedly connected with the supporting frame, plastic staple horizontal installation holes are formed in the locating edge blocks, and plastic staples penetrate through the plastic staple horizontal installation holes and make contact with the nonlinear large-aperture optical element; elastic pressing sheets are arranged on the periphery of a light-facing face of the nonlinear large-aperture optical element in a distributed mode, a rigid pressing sheet is arranged on each elastic pressing sheet, and the elastic pressing sheets and the rigid pressing sheets are connected with the locating edge blocks through load applying screws; a torque wrench acts on the load applying screws. The nonlinear large-aperture optical element clamping device capable of achieving definite value axial load application is applied to experimental schemes for full-circumferential clamping and definite value axial load application of the nonlinear large-aperture optical element.

The invention discloses a planting frame for height regulation by using threads, which comprises a base, a screw rod and a flowerpot bracket. The screw rod with external thread is screwed on the base, and the screw rod is provided with a dial for turning the screw rod on the base. The invention realizes the axial and radial adjustment of the flower pot bracket on the whole planting frame, meanwhile, the structure of the planting frame is stable and reliable, and the use is flexible and diverse.

The invention relates to the technical field of mechanical clamping, in particular to a liftable fixture for groove milling of end faces of hinge pins. A first limiting device, a second limiting device and a third limiting device are disposed on a base; the first limiting device comprises a 'T'-shaped first lifting device and a 'V'-shaped limiting block which is inwardly arranged at the top end of the first lifting device; a second limiting device comprises a 'T'-shaped second lifting device and a clamping device arranged at the top end of the second lifting device; the third limiting device comprises a supporting nail with the sharp end up, and the supporting nail is arranged on a transverse portion of the base. The liftable fixture for groove milling of the end faces of the hinge pins has the advantages of convenience in clamping and avoidance of influences on surface smoothness and machining.

The invention relates to a Hall circuit board fixing structure, and relates to the field of motors. Currently, a fixing mode of a brushless DC motor Hall circuit board is troublesome in installation.A Hall circuit board is disposed on a stator core, wherein the stator core is provided with a yoke, teeth and a slot hole, and an inner side between the teeth is a slot opening. The stator core is provided with a fixed frame. The Hall circuit board is fixed on the fixed frame, and the fixed frame is provided with a positioning and mounting structure of the Hall circuit board, a mounting frame forpositioning and mounting a Hall, and an insulating slot hole sleeve for isolating the stator core and a winding coil. The insulating slot hole sleeve covers the inner side surface of the yoke and theside surface and upper and lower end surfaces of the teeth, so that the slot hole is separated from the yoke and the teeth, and is opened at the slot opening. The structure improves the insulating property between a winding stator iron core coil and the stator core, is convenient to install, is firm in structure, and is good in stability.

The invention provides a guide tube for punching of an intramedullary nail and a punching device. The guide tube comprises a guide tube main body and a flexible bulge structure located at the far end. The punching device comprises the guide tube and a flexible drill. The flexible drill is located in the guide tube and used for penetrating through a nail hole in the intramedullary nail and then punching on a skeleton. According to the guide tube for punching of the intramedullary nail and the punching device, the nail hole can be found rapidly through the flexible bulge structure, meanwhile radial positioning is achieved, and thus the problems that an existing guide tube is only axially positioned, consequently, in the drilling process, the guide tube is deflected circumferentially and cannot keep consistent with the nail hole of the intramedullary nail, and thus the far end cannot be accurately locked are solved.

The invention relates to a pipeline cut-off valve, in particular to a polyethylene all-plastic ball valve formed by hot melt socket welding. The ball valve comprises a valve rod, a valve body, a valveball, a stub tube, a first valve ball sealing ring and a second valve ball sealing ring, wherein, the valve ball is arranged in the valve body, and the valve rod which rotates the valve ball is arranged thereon; the first valve ball sealing ring is fixed between the valve body and the valve ball, and the second valve ball sealing ring is fixed between the stub tube and the valve ball; the stub tube and the valve body are in hot melt socket-type connection, the inner surface of the insertion chamber of the valve body is provided with a melt glue surface of the valve body, and the outer surfaceof the stub tube is provided with a melt glue surface of the stub tube; and the valve body is matched with the stub tube and is provided with an axial positioning structure used for positioning the axial depth of the stub tube inserted into the valve body. The axial positioning structure of the invention guarantees the axial depth of the stub tube inserted into the valve body, thereby guaranteeing the axial spacing of sealing faces formed by the two valve ball sealing rings, and enabling the pretightening force of each sealing face to be consistent with the designed pretightening force.

The invention provides a fixture and a lathe, relates to the technical field of machining equipment, and aims to optimize the structure of the fixture to a certain extent and improve the machining precision and quality of an inner static ring. The fixture provided by the invention is used for positioning the inner static ring, and comprises a fixture main body, first limiting pieces and a first fastening assembly, wherein a bearing part is formed on one axial side of the fixture body in the circumferential direction of the fixture body; the bearing part enables the fixture main body to form apositioning table; the positioning table is sleeved with the inner static ring; one side of the inner static ring makes contact with the bearing part; a plurality of first positioning holes are formedin the axial direction and the circumferential direction of the positioning table; one end of each first limiting piece makes contact with the inner static ring; the first fastening assembly penetrates through the other end of each first limiting piece and enters the first positioning holes; and the first limiting pieces are pressed on the positioning table, so that the first limiting pieces canpress the inner static ring on the fixture main body.

The invention discloses a cutting device of a straightening cutting machine. The cutting device is characterized by comprising a frame body, a workpiece limiting mechanism, a fixed cutter and a movable cutter mechanism, wherein the frame body comprises a vertical plate and a top plate, a workpiece channel is formed on the vertical plate, the workpiece limiting mechanism comprises a left adjustingrod, a right adjusting rod and an upper adjusting rod, the left adjusting rod, the right adjusting rod and the upper adjusting rod are in threaded fit with a left side wall, a right side wall and a top wall of the workpiece channel correspondingly, first ends of the left adjusting rod, the right adjusting rod and the upper adjusting rod are all located in the workpiece channel and form a limitingchannel, the fixed cutter is installed on a back face of the vertical plate, a cutting edge of the fixed cutter and a low point of the limiting channel are located on the same horizontal line, the movable cutter mechanism comprises a movable cutter and an oil cylinder, and the oil cylinder is installed on the top plate and connected with the movable cutter so as to drive the movable cutter to moverelative to the fixed cutter. The cutting device is advantaged in that the cutting quality of a workpiece can be improved, the service life of the cutting knife can be prolonged, and a replacement period of the cutting knife is shortened.

The invention provides a new energy automobile driving integrated system motor structure applied to the technical field of new energy automobiles. The new energy automobile driving integrated system motor structure comprises a motor rotating shaft (1), a bearing pressing plate (2), a bearing (3) and a motor rear end cover (4). A bearing chamber is arranged on one side of the motor rear end cover (4). The motor rotating shaft (1) comprises a bearing assembling part (5) and a bearing end face (6), a pressing plate installing part (7) is arranged between the bearing assembling part (5) and the bearing end face (6), a bearing step face (8) is arranged at the pressing plate installing part (7), a middle through hole (9) is formed in the bearing pressing plate (2), and a pressing plate step face(10) is arranged at the middle through hole. The new energy automobile driving integrated system motor structure is simple in structure, the bearing pressing plate is convenient to install in the newenergy automobile drive integrated system motor, the installation process is simplified, and the installation efficiency is improved.

The invention relates to the technical field of mechanical clamping, in particular to a large-outer-diameter pin clamp. A first limit device comprises a first V-shaped limit block arranged on the vertical portion of a support; a second limit device comprises a supporting column, and a second V-shaped limit block is arranged on the supporting column and corresponds to the first V-shaped limit block; a third limit device comprises a support nail arranged on the transverse portion of a base, the nail head of the support nail faces downwards, and the nail point of the support nail faces upwards; a slide groove is arranged among the supporting column, the nail head of the support nail and the transverse portion of the support; a first slide rail matched with the slide groove is arranged on the bottom surface of the support column, and the bottom surface of the nail head of the support nail is provided with a second slide rail cooperatively used with the slide groove. The large-outer-diameter pin clamp can be used for clamping pin parts large in outer diameter and is firm in clamping.

The invention provides a large-aperture main lens lifting mechanism. A hoisting screw (1) is fixedly connected with the upper part of a hoisting cylinder (2), the upper part of a transition cylinder (3) is fixedly connected with the lower part of the hoisting cylinder (2); the lower part of the transition cylinder (3) is mounted on a bottom transition plate (8); a radial positioning assembly (4) is mounted on the outer circumference of the transition cylinder (3); the radial positioning assembly (4) can move up and down along the transition cylinder (3); a bottom circular plate (7) is mountedon the bottom transition plate (8); the bottom circular plate (7) is arranged around the outer circumference of the transition cylinder (3); and the bottom positioning assembly (6) is fixedly installed at the bottom of the bottom round plate (7). According to the large-aperture main lens lifting mechanism provided by the invention, the lifting process of a main lens is realized by utilizing the central hole of the main lens and the central edge of the bottom. The structure is compact, and the outer edge of the main lens cannot be occupied; and the large-aperture main lens lifting mechanism isapplied widely.

The invention provides a medium-sized gear shaping machine clamp pallet changer mechanism and an operation method. A gear shaper body is arranged on a gear shaper machine tool body, positioning tabletops are symmetrically arranged at the top of the gear shaper machine tool body, a clamp body used for clamping a workpiece is located and arranged on the positioning table tops through a zero point positioner, the clamp body is matched with a clamping supporting claw structure used for clamping the clamp body, the clamping supporting claw structure is matched with a clamping power mechanism usedfor providing a clamping force, the clamping power mechanism is fixedly arranged at the top of a rotation mechanism used for driving the whole clamping supporting claw structure to rotate, and in therotation mechanism and a lifting mechanism used for driving the rotation mechanism to integrally ascend and descend are arranged in the gear shaping machine body, the lifting mechanism is fixedly arranged on the gear shaper machine tool body. A double-station structure is adopted in the mechanism, it is guaranteed that in the workpiece machining process, clamping and positioning of the workpiecesare alternately achieved, and the problem that double workbenches cannot be adopted for medium gear shaping is solved.

The invention discloses a taper bearing press-fitting fixture. The taper bearing press-fitting fixture comprises a cylindrical fixture body, wherein an axially-penetrating guide hole is formed in thefixture body; a placement groove coaxial with the guide hole and used for placing a taper bearing is formed in one end of the fixture body; the sidewall of the placement groove is a conical surface used for forming transition fit with the outer race of the bearing; and an annular bypass groove used for accommodating a bearing retainer is formed in the bottom of the placement groove. During taper bearing press-fitting, the taper bearing is placed in the placement groove of the fixture body, radial location for the taper bearing is realized, and the deformation of the bearing retainer due to extrusion during taper bearing installation can be avoided; then the fixture body sleeves a steering column through the guide hole, and the guide hole is capable of playing the role of preliminary guide;then the taper bearing is pressed into a specified position on the steering column by virtue of a tool; and the taper bearing press-fitting fixture is simple and convenient, and capable of improvingthe bearing press-fitting quality and the bearing press-fitting efficiency. The invention further discloses a bearing press-fitting fixture comprising the taper bearing press-fitting fixture, for a vehicle steering column.

The invention discloses a rotary driving type steel wire rope winding device which comprises a bracket, a winding mechanism and a driving mechanism. The winding mechanism includes limiting plates, floating plates, a driving screw, a tapered driving block and driven wedge blocks. By means of the rotary driving type steel wire rope winding device, the traditional winding structure of a cylinder is changed, the driving screw is connected to the other side of the bracket in threaded rotating and penetrating manners, one end of the driving screw penetrates through the other limiting plate to extendto the position between the two floating plates, the end, extending into the position between the two floating plates, of the driving screw is provided with the tapered driving block, and the tapereddriving block abuts against the two driven wedge blocks; and when rotationally and transversely moving, the tapered driving block can abut against the two driven wedge blocks to move longitudinally,so that the two floating plates relatively float between the two limiting plates, the distance between the two floating plates can be adjusted, and the effect of adjusting the tightening force of a steel wire rope is achieved.