46results about How to "Fastened" patented technology

A self-draining vacuum breaker includes a first valve having an inlet at its one end for connecting an outfall, a second valve having a coupling portion at its one end connected with the other end of the first valve, an outlet at its the other end for connecting a hose, and an annular fringe formed at an inner periphery thereof, a movable stopper having a stopping member and a plurality of claw hooks, which extends downwards from the stopping member and movably contacts against the inner periphery of the outlet of the second valve and each has a barb-like hook portion, and a spring having two ends respectively engaging the barb-like hook portions and lying against the annular fringe.

The invention provides a numerical control rolling machine tool for outer circle rolling machining of a torsion shaft. The numerical control rolling machine tool comprises a machine tool body, an outer circle rolling head, a dual centre locating device, a shifting fork connecting part, an internal spline clamp sleeve, a full closed protection cover, a displacement measurement system, a precise oilmist cooling system, a numerical control system and a hydraulic system. The outer circle rolling head of the machine tool adopts a multi-rolling-wheel symmetric rolling device structure, and when outer circle rolling machining of the torsion shaft is carried out, a workpiece bears multiple equal pressures in the radiation direction; a displacement sensor is mounted in a hydraulic cylinder of theouter circle rolling head, the change value of the rolling diameter in the outer circle rolling process is worked out through the rolling cylinder displacement value fed back by the displacement sensor, and intelligent judgment on the limiting position of the outer circle rolling arc end can be achieved; and the shifting fork connecting part replaces a traditional chuck, a transmission structure is optimized, meanwhile, worker operation is more convenient, the machine tool is more suitable for streamlined production operation, and the rolling machining efficiency is higher.

The invention belongs to the field of machining of aero-engine turbine guide blades, and relates to a guide blade edge plate dustpan hole machining rapid changing clamping device and method. The clamping device is in a whole type, a positioning block and a supporting plate are arranged on the angular face of a clamping device body, the direction of a guide blade edge plate is positioned through a positioning face on the positioning block, through two positioning pins on the positioning block and one positioning pin on the supporting plate, positioning of the circular-arc top face of the guide blade edge plate in the vertical height direction is achieved, and the guide blade edge plate is jacked upwards from the lower portion of the guide blade edge plate through a jacking mechanism so that the guide blade edge plate is clamped; the exhaust side end face and the positioning face of the positioning block are attached, the guide blade edge plate is jacked upwards by adjusting the jacking mechanism, the circular-arc top face of the guide blade edge plate is tightly attached to the first positioning pin, the second positioning pin and the third positioning pin, a uniform gap is arranged between the exhaust side end face and the positioning face, and the beneficial effects of being compact in structure and rapid and convenient to operate are achieved.

The invention discloses a clamp for lathing the ventilation face of a volute. The clamp effectively clamps and fixes the volute of a booster, locates the center of the ventilation face of the volute of the booster on the axis of the lathe, is convenient to use, and can improve the lathing precision of the ventilation face of the volute and improve the processing quality of the workpiece. The clamp comprises a chassis; the clamp is characterized by comprising a locating boss and a support ring, wherein the bottom of the locating boss is provided with a limiting face, a through hole is formed on the chassis in a manner of deviating from the circle center, the locating boss is inserted into the through hole of the chassis, the support ring is sleeved on the locating boss, a to-be-processed volute is located on the locating boss by a junction surface thereof and is attached to the support ring, and the to-be-processed volute is fastened with the support ring and the chassis by bolts through the junction surface connection hole thereof.

The invention discloses a work fixture for a mechanical arm, and relates to the technical field of industrial instruments. The work fixture comprises a mounting base and a connecting base; the front side face of the connecting base is fixedly connected with a fixture box; and the inner wall of the rear end of the fixture box is fixedly connected with an air cylinder. According to the work fixture, by arranging a spring barrel and side face clamping rods, a workpiece can be limited through three side faces; the workpiece is clamped more firmly by the stability capacity of a triangle; due to the fact that a large number of anti-skid discs can be tightly attached to the surface of the workpiece, the purpose of firm clamping can be better achieved; and by arranging a tensioning spring, a telescopic rod can stretch out and draw back in the spring barrel when being stressed, and accordingly, diameters among three arc-shaped clamping pieces are adjusted; meanwhile, due to the fact that jacking columns can stretch out and draw back in limiting barrels, the work fixture can well adapt to workpieces with different diameters when being used for clamping the workpieces with the different diameters, thereby achieving the purpose that the workpieces with different diameters can be clamped.

The invention discloses a manufacturing device for a rigid tie rod structure, which comprises a tie rod welding table, a steel pipe bracket and a T-shaped plate clamping rotating assembly. The tie rod welding table is provided with two sets of steel pipe brackets. The T-shaped clamping rotating assembly includes a rotating shaft, a rotating shaft bracket and a motor, the rotating shaft bracket is arranged on the tie rod welding table, the rotating shaft is arranged on the rotating shaft bracket to rotate, and the inner end of the rotating shaft There is a T-shaped plate clamping groove in the middle of the head, and the fastening bolts for clamping the T-shaped plate are arranged on the T-shaped plate clamping groove. The outer end of the rotating shaft is provided with a pulley, and the pulley corresponds to A motor is arranged on the tie rod welding table, and the motor drives the pulley to rotate through a belt.

The invention discloses a bolt machining clamp for a lathe. The bolt machining clamp is characterized in that a clamping hole is drilled in the central position in a clamping sleeve; the clamping sleeve of which one end is of a conical structure is uniformly divided into four equal parts; an outer sleeve matched with the clamping sleeve is arranged on the clamping sleeve of the conical structure in a sleeving way; a pulling rod is connected to the other end of the clamping sleeve. In such a way, the bolt machining clamp is used for machining a lathe bolt and can conveniently clamp, time and labor are saved during clamping, a bolt is firmly clamped, the bolt is convenient to machine and produce, and the production efficiency is improved.

The invention discloses a clamping device of molds of engraving-milling machines. The clamping device comprises sliding rails, air cylinders, sliding blocks, clamping plates, butterfly-shaped screws and a machine tool, wherein the sliding rails are welded to the machine tool; the sliding rails are provided with four uniform clamping sets, each clamping set comprises one sliding rail, one air cylinder, one sliding block and one clamping plate, the air cylinders are arranged on the machine tool through bolts and are located at the right ends of the sliding rails, the sliding blocks are erected on the sliding rails in a sliding mode, are respectively of a U shape and are connected to piston rods of the air cylinders through bolts, the left end of each sliding block is connected to one clamping plate through one butterfly-shaped screw, and the clamping plates are arranged on the upper surfaces of the sliding rails. The clamping device has the advantages that time and labor are saved and clamping is stable and firm.

The invention discloses a clamping balance lockable regulator pin fine tuning mechanism including a balance cock, a hairspring outer pile, a hairspring, an antivibrator, a balance, and an regulator pin mechanism, the balance cock is fixed on the movement of a mechanical watch, the inner end of the spring is connected at the balance shaft, the regulator pin mechanism includes an regulator pin body, a hairspring clamp, an regulator pin connecting rod, and a fine tuning screw with a big cap and a small eccentric shaft, the hairspring outer pile, the regulator pin body, and the regulator pin connecting rod sleeve the balance cock via the antivibrator, the hairspring penetrates into the hairspring clamp, the outer end of the hairspring is fixedly connected with the hairspring outer pile, and the hairspring clamp is composed of a hairspring fixed lock flap and a hairspring movable lock flap. The hairspring outer pile and the regulator pin can be fixed and also are convenient to adjust, the hairspring and the hairspring clamp are firmly clamped, so that the rapid coarse registration adjustment and fine registration adjustment of the regulator pin position can be facilitated, the structure is reasonable, and the efficiency for watch time-travelling accuracy adjustment and calibration is improved.

The invention discloses a chain sheet clamping device and chain sheet machining equipment with the chain sheet clamping device, and relates to the field of clamping devices for clamping chain sheets and chain sheet machining equipment. The chain sheet clamping device comprises an installation base, a first end jacking mechanism and a second end jacking mechanism. The first end jacking mechanism comprises a baffle, first side edge baffles arranged on the side faces of the baffle and a check block. The second end jacking mechanism comprises a movable baffle, second side edge baffles arranged on the side faces of the movable baffle and third side edge baffles. Different holes can be machined through one-time clamping of the chain sheet clamping device, and therefore machining precision and production efficiency are improved. The chain sheet machining equipment comprises a machine base, the chain sheet clamping device arranged on the machine base and a first machining cutter set, wherein the first machining cutter set is arranged on the machine base, and the chain sheet clamping device and the first machining cutter set are perpendicularly and correspondingly arranged. By means of the chain sheet machining equipment, multiple chain sheets can be simultaneously machined, clamping is stable, machining precision can be improved, and machining production efficiency can also be greatly improved.

The invention discloses a novel inner diameter expanding clamping tool. The novel inner diameter expanding clamping tool is characterized in that a drawbar is inserted into an expanding sleeve in a penetration manner, wherein one end of a penetrating hole inside the expanding sleeve is tapered; an inclined boss is arranged on the outer wall of the expanding sleeve; the outer wall of the expanding sleeve with a tapered end is equally divided into four parts; one end of the drawbar is tapered; the tapered end of the drawbar is matched with the tapered penetrating hole inside the expanding sleeve. The novel inner diameter expanding and clamping tool is used for supporting an inner hole of a lathe processing workpiece, convenient to clamp, time-saving and labor-saving in clamping, firm in clamping and convenient for processing production of the workpiece, so that the production efficiency is improved.

The invention relates to the technical filed of monitoring equipment, and discloses a security monitoring terminal based on face recognition. The security monitoring terminal comprises a camera body which is arranged in a shell, the shell comprises a lower bottom plate and an upper bottom plate which are arranged parallel to each other, and the lower bottom plate and the upper bottom plate are connected through a supporting plate located on the rear side; first sliding grooves are formed in the opposite side faces of the lower bottom plate and the upper bottom plate correspondingly in the left-right direction, and first guiding columns are arranged in the first sliding grooves in the left-right direction; and two moving plates are parallelly arranged between the lower bottom plate and theupper bottom plate, sliding blocks stretching into the corresponding first sliding grooves are arranged on the end faces of the moving plates, first through holes allowing the corresponding first guiding columns to penetrate through are formed in the sliding blocks, first springs used for pushing the moving plates to get close to each other are arranged on the positions, at the two ends, on the first guiding columns in a sleeving mode, and a clamping mechanism used for fixing the camera body is arranged between the moving plates. Through the structure, dismounting and mounting of the camera body in the shell are more convenient.

The invention discloses an auxiliary fixture for a precision grinding machine, comprising an operation board and a bottom plate located under the operation board, the operation board comprises an outer frame and a movable board, and the outer frame is in the shape of a square hollow inside and has The two opposite side edges and the two opposite end edges have two movable plates, which are distributed parallel to the end edges. The movable plates are matched and connected to the opposite sides of the outer frame, and there are springs between the movable plates and the end edges. , the movable plate and the side are respectively connected with several clamping claws. The invention is further improved on the basis of the original grinding machine clamping fixture, greatly improves the process flexibility, applicability and reliability, and can conveniently realize efficient and stable grinding machine workpiece clamping.

The invention discloses a petroleum pipeline conveying device. The structure of the petroleum pipeline conveying device comprises a ventilating plate, a lifting conveying device and a friction material layer; the ventilating plate is fixedly connected to the front surface of the lifting conveying device in an embedded manner; a maintenance baffle plate mounted on the front surface of the lifting conveying device and simultaneously is connected with the lifting conveying device in the embedded manner; according to the petroleum pipeline conveying device disclosed by the invention, a clamping mechanism is driven to operate through the control of a micro motor braking device, so that a pipeline is clamped more stably and cannot fall off in a lifting conveying process; through the control of adual-motor braking device, the state of a lifting mechanism is influenced through a transmission rod mechanism, so that the lifting of a clamped pipeline can be controlled; a rotating conveying mechanism is controlled through a swinging mechanism, so that the pipeline can be placed better, the overall process is not required to be controlled manually, and the safety is improved; and the lifting conveying can be more stable because of mechanical control, and the subsequent conveying efficiency is improved.

The invention relates to the technical field of food wiping and cleaning auxiliary devices, in particular to a food cleaning device for organic food research and development. By means of the food cleaning device, foods do not need to be held by hands at any time during food cleaning, so that the practicability of the food cleaning device is improved; the food cleaning device comprises a top plate,a bottom plate, two side plates, a motor, a transmission shaft, a connecting plate, two fixing plates, two rotating shafts, two pulley blocks, two first sleeve spring groups, two first telescopic tube groups, two adjusting block groups, a gear, a driving shaft, a handle, a connecting frame and a connecting column, wherein a brush group is arranged at the bottom end of the connecting plate; bearing seats are symmetrically arranged on the inner sides of the two side plates; ball bearings and limiting pieces are arranged in the two bearing seats; blocking pieces are arranged on the inner sides of the two bearing seats; the connecting column comprises a second sleeve spring and a second telescopic pipe; the outer side wall of the fixing plate on the right side is provided with a tooth pattern; and the fixing plate on the right side is engaged with the gear.

The invention provides a double-end-face grinding machine which comprises a machine base. Two grinding discs, a feeding assembly, a feeding rotary disc and a motor for driving the feeding rotary disc to rotate are installed on the machine base. A plurality of mounting grooves are formed in the circumferential outer wall of the feeding rotary disc in an inward concave mode, and pressing assemblies are assembled on the sides, in the width direction, of the interiors of the mounting grooves and can stretch out and draw back in the width direction of the mounting grooves; a workpiece positioning channel with the adjustable width is formed between the pressing face of the pressing assembly and the other side of the installation groove in the width direction. The feeding rotary disc is further connected with a driving assembly, and when the motor drives the feeding rotary disc to rotate to different set positions in the circumferential direction, the driving assembly is used for driving the pressing assembly to stretch out or retract, so that the workpieces are clamped or loosened. According to the double-end-face grinding machine, the grinding channel used for conveying workpieces on the feeding mechanism to the position between the grinding discs one by one is additionally arranged between the two grinding discs, and clamping of the workpieces is stable and efficient.

The invention relates to a firmly-clamping lever-type clamping device which comprises a first clamping component, a second clamping component, an elastic component, a pin shaft and a puller bolt. Thefirst clamping component and the second clamping component are assembled in a hinged mode, and the elastic component is arranged between the first clamping component and the second clamping component.One end of the second clamping component is provided with a screw hole for screwing the puller bolt, and the puller bolt is screwed in the screw hole. The inner side face of one end of the first clamping component is further correspondingly provided with a concave position for the puller bolt to abut against, the inner side face of the other end of the first clamping component is further providedwith an arc-shaped protruding part, the surface of the arc-shaped protruding part is further provided with insection, and the puller bolt abuts against the concave position. The clamping device is firm and reliable in clamping, does not loosen, is very safe in clamping and locking, and can carry out clamping and does not loosen even if the clamping device clamps a moving or vibrating object.