102results about How to "Stable positional relationship" patented technology

The invention discloses a satellite-borne deployable mesh antenna. The satellite-borne deployable mesh antenna comprises an antenna reflecting surface extending arm (1), an antenna reflecting surfacedeployable supporting assembly (2) and a cable net structure (3). The antenna reflecting surface extending arm adopts a carbon fiber composite material hollow round rod design, so that the weight of the extending arm and the in-orbit thermal deformation of the extending arm are reduced, and the antenna pointing accuracy is ensured. The antenna reflecting surface deployable supporting assembly (2)is composed of module units, can be increased or decreased according to the aperture requirement of the antenna reflecting surface, and is high in expandability. The cable net structure is designed ina multi-layer cable net mode, ground adjustment of the profile precision of the reflecting surface is achieved, and the requirement of microwave antenna detection for the profile precision of the reflecting surface is met. According to the invention, factors such as antenna emission folding and in-orbit unfolding, antenna reflecting surface function and performance testing and antenna reflectingsurface profile precision adjusting are comprehensively considered for design, and the requirement of satellite in-orbit ground detection can be met.

The invention relates to the technical field of internal expanding chuck equipment, in particular to an internal expanding chuck. The internal expanding chuck comprises a chuck body, an annular integrated expanding sleeve and a push-pull assembly, wherein the integrated expanding sleeve comprises at least two fan-shaped clamping jaws and at least two elastic structural components; one elastic structural component is fixedly connected between every two adjacent fan-shaped clamping jaws; the chuck body is connected with a machine tool; a conical shaft is arranged at the top part of the chuck body; the conical shaft is in a conical shape or a circular truncated cone shape; the integrated expanding sleeve is arranged on the conical shaft in a sleeving way; the inner side wall of the integratedexpanding sleeve is matched with the conical shaft in a sliding way; the outer side wall of the integrated expanding sleeve is in a cylindrical surface shape which is coaxial with the conical shaft;the outer side wall of the integrated expanding sleeve can be fitted with an inner circle of a workpiece; the push-pull assembly is used for pulling and limiting the integrated expanding sleeve to move along the axis of the conical shaft. According to the internal expanding chuck provided by the invention, the damage to the workpiece is reduced, the repeated positioning accuracy is high, and the service life is longer.

The invention discloses a metal cutting machine tool capable of preventing metal chips from splashing. The metal cutting machine tool comprises a shell; the shell is of a hollow structure opened at the bottom end; a metal cutting tool is fixedly mounted on the inner wall of the top end of the shell; a console is arranged below the metal cutting tool; two support legs are fixedly mounted at the bottom end of the console; the console and the bottom end of the shell are positioned on the same horizontal plane; placing blocks are arranged on two sides of the bottom end of the console, and are positioned below the shell; a moving mechanism for shifting the placing blocks is arranged between the placing blocks and the bottom end of the shell; the moving mechanism comprises a first cavity formedin the shell; and a rotating motor is fixedly mounted on the inner wall of one side of the first cavity. The metal cutting machine tool can conveniently collect the splashing metal chips through a collecting box, meanwhile, can conveniently and stably mount and disassemble the collecting box, is convenient to timely remove the metal chips in the collecting box, and is simple in structure and convenient to use.

The invention discloses a connecting device for nylon ribbons. The connecting device comprises a box body; a working platform is fixedly connected between two opposite sides of the inner wall of the box body; a first motor is fixedly connected at the bottom of the inner wall of the box body; a first screw is in transmission connection with the output shaft end of the first motor; clamping devicesare fixedly connected on the surface of the first screw through first sliding blocks; a waste box is fixedly connected in the position located at the top of the working platform and close to one sideof the inner wall of the box body; a second motor is fixedly connected at the top of the box body; a second screw is in transmission connection with the output shaft end of the second motor; a cuttingdevice and a connecting device body are fixedly connected on the surface of the second screw through a second sliding block; the top of the waste box communicates with a dust suction pump; and one end, far away from the dust suction pump, of a suction pipe communicates with the cutting device. The invention relates to the technical field of printing consumable production. By the aid of the connecting device for the nylon ribbons, the problems of low connecting speed, uneven connections and the like of traditional nylon ribbons are solved, and the subsequent cleaning work is reduced.

The invention provides a reciprocating cutting tool, which is used for cutting workpieces and comprises a handle, a casing, a motor, a reciprocating lever and a limiting part, wherein the casing is pivotally connected with the handle, the motor is contained in the casing, the reciprocating lever is driven to reciprocate by the motor, and the limiting part is arranged on the casing. A locking part is detachably mounted on the handle, can be matched with the limiting part and is operably placed at a locking position and a releasing position, wherein the locking position is used for limiting relative rotation of the casing and the handle, the releasing position is used for allowing relative rotation of the casing and the handle, and the locking part at least partially encloses the limiting part. The reciprocating cutting tool has the advantages that the rotary resistance between the locking part and the limiting part is increased, and the positions of the locking part and the limiting part are stably locked.

The invention discloses an integrated sand core for integrated molding of a railway wagon side frame guiding frame and a stop key mounting surface as well as a production method of the integrated sand core. The integrated sand core comprises a sand core part A for molding the railway wagon side frame guiding frame and a sand core part B for molding the stop key mounting surface, wherein the sand core part B is the part that the sand core part A extends in the vertical direction of the sand core part A and enlarges in the width direction to contain the stop key mounting surface, and the sand core part A and the sand core part B constitute the sand core adopting an integrated structure. Different from the technological method for molding the guiding frame and the stop key mounting surface respectively by using a sand core and a contour, the integrated sand core is used for molding the side frame guiding frame and the stop key mounting surface, that is, the side frame stop key mounting surface is molded while the side frame guiding frame is molded integrally by the aid of the integrated sand core, so that the side frame stop key mounting surface is free of draft angles, steps and trimming, the appearance quality and the inherent quality of the stop key mounting surface are effectively improved, and the cleaning work intensity of repair welding, polishing and the like caused by appearance molding is reduced.

An imaging optical array includes a plurality of imaging optical elements, which is arranged in a line in an arrangement direction, each including incidence lens to which light from an object is incident, an emission lens that emits light, and a light guiding portion that connects the incidence lens and the emission lens and that guides the light incident from the incidence lens to the emission lens, and which images an erect equal-magnification image of an object by the incidence lens and the emission lens, in which the plurality of imaging optical elements is integrally formed of a transparent medium in a state where the respective light guiding portions of the plurality of imaging optical elements are arranged in a line in the arrangement direction, and a void between the light guiding portions of the imaging optical elements adjacent to each other is empty in the transparent medium.

The present invention provides a substrate supporting structure and a reaction chamber containing the substrate supporting structure. The substrate supporting structure comprises a substrate supporting disc and a cylindrical supporting member, wherein the cylindrical supporting member is vertically arranged, the substrate supporting disc is supported on the top end of the cylindrical supporting member, the top end of the cylindrical supporting member is provided with a supporting member projection or a supporting member recess, the substrate supporting disc is provided with a supporting disc recess corresponding to the supporting member projection or a supporting disc projection corresponding to the supporting member recess, and the supporting member projection and the supporting disc recess are matched or the supporting member recess and the supporting disc projection are matched so as to lock the substrate supporting disc on the cylindrical supporting member. With the present invention, the problems that the substrate-placed substrate supporting disc easily fly out during a rotation process and rotation of the substrate supporting disc is not stable are solved.

The invention relates to a dual-camera zoom module, including a first camera module, a prism module, a second camera module and a circuit board, wherein the first camera module and the prism module are coplanarly arranged, The prism module is arranged concentrically with the optical axis of the second camera module. The prism base in the present invention is provided with an intermediate reinforcing plate to strengthen the prism base; the prism base is also provided with a positioning protrusion, and the second camera module is provided with a positioning hole, and the positioning protrusion is connected with the positioning hole The correct mutual positional relationship is ensured, and the imaging quality is improved; the invention adopts a split structure, which divides different components into different units, and then assembles them into one body. Allows flexibility in parts replacement and saves cost and maintenance.

An electrical connector (10) adapted for being mounted onto a printed circuit board (PCB) including a number of vias. The electrical connector includes an insulative housing (200) having a board mounting surface (12), a contact module (400) assembled to the insulating housing (200) and including a number of conductive terminals (403), and a positioning fixer (300) mounting to the conductive terminals. Each of the conductive terminals includes a pin end extending beyond the mounting surface for being inserted into one of the PCB vias. The position fixer (300) has a plurality of through holes (301) each retaining to a corresponding pin end (405) prior to the position fixer (300) being moved up to the mounting surface when the electrical connector is mounted to the PCB.

The invention belongs to the technical field of conveying equipment, and particularly relates to conveying equipment for a glass processing production line. The conveying equipment comprises a conveying frame, and a plurality of conveying mechanisms are rotatably installed on the inner wall of the two sides of the conveying frame. Each conveying mechanism comprises two mounting racks, wherein rotating holes are formed in the two mounting racks, the same power guide roller is rotatably installed in the two rotating holes, and the power guide roller is provided with a plurality of anti-falling mechanisms. Protection frames are arranged on the two sides of the conveying frame, a plurality of guiding and conveying mechanisms are arranged in the two protection frames, each guiding and conveyingmechanism comprises a cross rod, three connecting frames are fixedly installed on one side of each cross rod, and guide wheels are rotatably installed on each three connecting frames. The conveying equipment has good protection performance, the glass does not shake when being conveyed, at the same time, the glass can be avoided from falling down from a conveying platform when being conveyed in multiple directions, and thus the safety and stability of the glass in the process of transportation are ensured.

The invention discloses a low-power resistance spot-welding process adopting a multi-end electrode. The low-power resistance spot-welding process adopting the multi-end electrode is used for solving the problems of welding spatter, high welding penetration rate and the like caused by unstable single-point welding and excessive instantaneous welding heat input in an existing resistance spot-welding connection technology for thin-wall parts and filter screen parts. The low-power resistance spot-welding process adopting the multi-end electrode comprises the steps of cleaning and assembling for a welding test piece, pressing before welding, preheating before welding, welding, pressure maintaining after welding and the like, wherein the multi-end electrode is used for welding the welding test piece, the welding process of pressurizing, preheating, welding and maintaining is adopted, the whole welding process lasts for about 5 ms, the time of heat accumulation in a welding pressing process is shortened, the welding efficiency is increased, and the stability of product assembling is improved; and the spatter generated in the welding process can be effectively avoided, collapse, welding penetration and the like in the welding process are greatly reduced, resistance spot-welding connection for thin-wall filter screens and gaskets can be stably, efficiently and excellently realized, and a new technological reference is provided for welding for thin-wall filter screen parts.

The drum(4) is formed in a hollow cylindrical shape, a plurality of inner support rollers 13, 14 and 15 for supporting the drum 4 from the inside are arranged in the hollow inner part. Among thee rollers, one inner support roller 13 is provided in the vicinity of the magnetic head 7, and the inner support roller 13 is regularly energized toward the magnetic head 7, and a roller 16 constituting part of a carrying means 5 is arranged in a position opposed thereto through the drum 4 so as to hold the drum 4 between the roller 16 and a movable carrying means. The information medium recording and reproducing device comprises a medium carrying passage 3 constituted by a carrying means 5 composed of the drum 4 and a plurality of carrying belts arranged around it, and a magnetic head 7 arranged in a position opposed to a magnetic recording part of a magnetic information medium.

The invention relates to a ball valve. The ball valve comprises a fixer positioned between a valve ball and a valve body, and a limiting piece sleeved on the fixer, wherein the fixer is hermetically connected with the valve body through a sealing element; the valve ball is hermetically connected with the fixer; the limiting piece is connected with the valve body in an anti-rotation way; the sealing element is arranged between the radial end face of the limiting element and the radial inner end face of the valve body; an elastic piece is arranged between the limiting piece and the radial end face of the fixer; a plurality of second grooves are molded on the end face, which faces the fixer, of the limiting piece; a plurality of bosses are molded at positions where the fixer is matched with the second grooves; at an assembling position, the bosses are inserted into the second grooves; at a working position, the bosses retreat from the second grooves under the action of the resilience force of the elastic piece, the fixer can move towards the valve ball and be pressed against the valve ball, and the bosses are pressed against the outer end face of the limiting piece after rotating by certain angles on the fixer. The assemblies cannot move relatively at the working position, thereby achieving a reliable sealing effect between the fixer and the valve body and simplifying the structure.

The invention provides an oil transfer arm rotary joint sealing ring translation replacing device and application thereof. The device comprises a translation beam, a translation frame and a connection block, wherein the translation frame is horizontally and slidably installed on the translation beam, and the connection block is installed at the lower end of the translation frame through a connector; one end of the translation beam is provided with an installation plate for being connected with an equipment fixing end, and the other end of the translation beam is provided with a limiting plate for preventing the translation frame from falling off; the connector comprises an adjustment nut, the upper end of the adjustment nut is provided with an upper threaded rod for being connected with the translation frame, and the lower end of the adjustment nut is provided with a lower threaded rod for being connected with the connection block; and the upper threaded rod and the lower threaded rod are opposite in direction of spiral. The oil transfer arm rotary joint sealing ring translation replacing device is simple in structure and convenient to use, the translation beam shares the weight of a rotating segment of a rotary joint, a positioning role is played through a long pole, and stability of the relative position relation between the rotating segment and a fixed segment of the rotary joint is always maintained; besides, the translation frame linearly moves on the translation beam, and resetting precision is effectively guaranteed; and when a sealing ring is replaced, operation difficulty is low, and time and labor are saved.

The invention discloses a sensor module, and the module comprises a camera module which comprises an optical range camera, a plurality of illumination elements disposed around the optical range camera, and a circuit board which is electrically connected with the optical range camera and the illumination elements; a first mounting seat, provided with a limiting hole used for limiting the position of the optical range camera and a first limiting part arranged on the periphery of the limiting hole and used for limiting the position of the illumination element. The illumination element is limitedby the first limiting part to enable the included angle between the optical axis of each illumination element and the optical axis of the optical range camera to be an acute angle. The invention further discloses a mobile cleaning robot. The mobile cleaning robot comprises a robot body and the sensor module. The relative fixation of the optical range camera and each illumination element is realized, the change of the relative position between the camera and the illumination element in the assembly process is avoided, and the optical range camera can clearly and accurately capture the image ofthe to-be-tracked surface.