106results about How to "Prevent follow-up" patented technology

The invention discloses a rotating bracket for wind-tunnel flow-field display test models, and the rotating bracket is provided for solving the problems that in a wind-tunnel flow-field display test, the adjustment on the levelness and rotating angle of the traditional test model is inconvenient and not high in precision. A bottom plate of the bracket is provided with a height adjusting bolt and a level instrument so as to meet the requirements on the levelness of the test model; the edge of a top plate of the bracket is provided with an angle scale line, and a rotating plate is arranged above the top plate, then the model can be rotated quickly and accurately so as to adjust the test model to a required wind attack angle; and besides the wind-tunnel flow-field display test, the bracket also takes the demands of a pressure measuring test for wind tunnels into consideration, holes are arranged in the centers of the top plate and the rotating plate so as to facilitate the connection between a pressure measuring pipe at the bottom of the model and a pressure measuring device below a floor board of a wind tunnel. The rotating bracket disclosed by the invention can be used for solving the problem that in a wind-tunnel flow-field display test, the manual adjustment on the levelness and rotating angle of a model is poor in precision; and the rotating bracket not only can be applied to wind-tunnel flow-field display tests on pure building structure scaled models in wind tunnels, but also can be applied to synchronous pressure measuring tests.

The invention discloses a guide drilling tool for developing shale gas. The guide drilling tool comprises a spiral drilling rig, a transmission shaft, a hydraulic system, a guide sleeve and a shell sleeved outside the spiral drilling rig, wherein the periphery of the lower end of the guide sleeve is provided with four oil cylinders which are parallel to the axial direction and are uniformly distributed on the guide sleeve at the included angles of 90 degrees; every two oil cylinders which are 180 degrees away from each other form a pair of reverse synchronous oil cylinders, so that two pairs of reverse synchronous oil cylinders are formed; four guide push arms are arranged on the guide sleeve corresponding to the four oil cylinders; one end of each guide push arm is hinged on the guide sleeve; and the piston rod ends of the four oil cylinders are arranged together with the other end of the guide push arm through a push block respectively, so that an adjustable upper stabilizer is constructed. The guide push arm is equivalent to a controllable eccentric upper stabilizer, and is combined with a lower stabilizer which rotates near a drill bit, so that a well track is smoother, and the control accuracy and efficiency of the well track are increased.

The invention discloses a bending device of an electric heating wire in the field of fixture structures. The bending device comprises a base plate, and a positioning mechanism, a clamping mechanism and a bending mechanism which are mounted on the base plate; the positioning mechanism comprises a positioning plate fixedly mounted on the base plate, a positioning block is fixedly mounted on the positioning plate, and a positioning column is mounted on the positioning block; the clamping mechanism comprises a clamping base and a clamping slide block which are mounted on the base plate, an eccentric wheel matched with the clamping slide block is further arranged on the base plate, and the eccentric wheel rotates to drive the clamping slide block to slide in the clamping base; the bending mechanism comprises a central shaft mounted on the base plate, a center wheel is arranged on the central shaft in a sleeving manner, arc-shaped grooves are processed in the periphery of the center wheel, a rotatable wrench is further arranged on the central shaft in a sleeving manner, and an extrusion wheel matched with the center wheel is arranged on the wrench. The bending device of the electric heating wire disclosed by the invention is simple in structure, convenient to use, high in efficiency while bending, and further convenient in bending radius switching, thereby being applicable to processing of electric heating wires.

The invention discloses an anti-falling followed-turning-prevention bolt fastening device and a method for fastening a bolt through the device. The device and the method mainly solve the problems that bolts are fixed difficultly and are turned or fall easily during fastening and the inconvenience is caused by two-man operation during dual-nut fastening. The anti-falling followed-turning-prevention bolt fastening device comprises a socket spanner, a fixed connecting rod which is connected with the socket spanner, a fixed plate which is installed at the bottom of the fixed connecting rod and a clamping slot spanner which is connected with the fixed plate. The socket spanner comprises a handle, a socket and a connecting rod which is connected with the handle and the socket, a round hole is arranged at the upper end of the fixed connecting rod, the fixed connecting rod is sleeved on the connecting rod through the round hole, a connecting supporting ring is sleeved on the connecting rod, arranged under the fixed connecting rod and connected with the connecting rod through a fastener, the fixed plate is connected with the clamping slot spanner in a sliding mode, and the head portion of the clamping slot spanner is connected with a rotatable turning piece.

A locomotive fortuitous accident automatic warning help-seeking safety management system is characterized by at least comprising an induction assembly, direction lights and a parking light switch, wherein the locomotive fortuitous accident automatic warning help-seeking safety management system can be connected with a control system, vehicle states are detected through using of the induction assembly, signals of the direction lights and the parking light switch are utilized, and detection signals and switching signals are provided for the control system in good time; the control system is provided with an integrated circuit and a stabilization line, wherein the integrated circuit has the functions of starting mode detection, signal detection, calculation and analyzing, and the detection signals and the switching signals are converted into warning signals to be outputted to a control circuit; and the control system has the function of a digit type flasher and a direction light fault automatic inspection and warning function, and when any one direction light breaks down, a work indicating lamp shows in a mode of extinguishing / constant lighting or flicker frequency changing, or parking warning lighting is started. Fortuitous accident signals are detected, and various warning devises of a vehicle are started; lamp signals or sounds and others are emitted according to requirements; or through a mobile phone, a global positioning system (GPS) and the like, help-seeking information and safety warning help-seeking signals are sent out.

The invention provides an air stopping and material guiding device for a pyrolysis channel. The air stopping and material guiding device comprises a spiral ring pipe, a set of spherical valve openings, a set of steel balls and a set of guide ball groove plates, wherein an inner ring face of the spiral ring pipe is a cylindrical surface and an outer ring is a polygonal column surface; the spherical valve openings are respectively separated on the minimum radial section of a variable section of the spiral ring pipe at intervals in a radial direction; the steel balls are correspondingly arranged at the rear sides of the spherical valve openings which rotate along the rear side of a rotary direction of a barrel one by one; the guide ball groove plates and the outer ring surface are combined to form a ball groove for limiting the steel balls to move among the spherical valve openings, and a polygonal angular point; the polygonal angular point is outward deviated from enveloping circles of the spherical valve openings; and the quantity of the spherical valve openings in the spiral ring pipe needs to guarantee that at least one spherical valve opening is sealed by the steel ball at any moment; the device is applied to a air stopping and material guiding condition in a high-temperature pyrolysis process when a heat carrier is led in and led out of the pyrolysis channel; oxygen-enriched gas is effectively prevented from entering the pyrolysis channel, and a flow returning phenomenon that materials in the spiral pipe rotate along the pyrolysis channel can be effectively prevented.

The invention discloses a bolt anti-follow component. The component comprises at least two sections of lower limiting strips, wherein the lower limiting strips are butted to form an entire ring; the lower limiting strips are provided with a plurality of lower limiting holes which are uniformly distributed; both the lower limiting holes at the two ends of each lower limiting strip are half holes; transition laths perpendicular to the lower limiting strips are uniformly distributed on the inner side of the lower limiting strip; one side of the transition lath is provided with upper limiting strips perpendicular to the transition laths; the upper limiting strips are provided with upper limiting holes; and the upper limiting holes are coaxial with the lower limiting holes which are nearest to the upper limiting holes. The component has the advantages of simple structure, simple and convenient operation, high installation efficiency, easy machining and capability of solving the problem of following of the bolt and is particularly suitable for preventing the following of the bolt during the connection of a flange and a bolt.

The invention relates to a clamping device for a thin-wall sleeve. The clamping device comprises a fixed rod, a round plate, a connecting rod, a clamping mechanism and a driving mechanism. The clamping mechanism comprises a clamping assembly and a limiting assembly. The driving mechanism comprises a first fixed pulley and a driving assembly. According to the clamping device for the thin-wall sleeve, the thin-wall sleeve is fixed through the clamping mechanism, elastic clamping of clamping plates on the outer ring of the thin-wall sleeve is achieved through the restoring force of a first spring, and the situation that due to the fact that the clamping force is too large, the thin-wall sleeve deforms is avoided; meanwhile, the friction force of the clamping device and the thin-wall sleeve isincreased through a rubber pad and protrusions, and the thin-wall sleeve is prevented from rotating accordingly during end face machining; the end face in the thin-wall sleeve is fixed through a magnet, and therefore dual fixing on the thin-wall sleeve is achieved; and meanwhile, the magnitude of the magnetic force of the magnet is adjusted through an adjusting unit, the situation that due to thefact that the magnetic force is too large, the thin-wall sleeve deforms is avoided, the clamping assembly is controlled through the driving mechanism, and therefore the thin-wall sleeve is mounted more conveniently, and the mounting efficiency is improved.

The invention discloses a side surface fast mounting mechanism for a photovoltaic bracket. The side surface fast mounting mechanism comprises an inclined plane pressure block, an inclined plane base, a connecting piece, a bolt and a nut, wherein hanging hooks are arranged on the two sides of the upper part of the inclined plane base, and the inclined plane base is mounted on the connecting piece through the hanging hooks; the inclined plane pressure block is placed on the inclined plane of the inclined plane base, a stepped hole is formed in the inclined plane pressure block, and a spring is placed in the stepped hole; a waist-shaped hole is formed in the position of the inclined plane base, which corresponds to the connecting piece; and the bolt sequentially penetrates through the connecting piece, the inclined plane base, the inclined plane pressure block and the spring, and the upper end of the bolt is connected with the nut. The side surface fast mounting mechanism disclosed by the invention is simple in structure, low in cost and fast and convenient in mounting process; a spring structure is adopted for realizing fast mounting of the inclined plane pressure block in a preset position, so that the inclined plane pressure block can be conveniently and reasonably clamped into a groove of a guide track, the spring in a locked state can be finally compressed into a countersunk hole, and the reliability and aesthetics in locking can be ensured; the square-neck bolt and the nut are adopted, thereby effectively preventing the following rotation and improving the mounting efficiency; and a side-surface fast mounting piece base can realize adjustability in height during the mounting process, thereby solving the problem that a roof is uneven during actual mounting.

The invention relates to the technical field of ductile cast iron pipe production tools, in particular to a ductile cast iron pipe conveying device which comprises a drive motor and two fixed underframes arranged in parallel. A transmission mechanism and a transport vehicle are arranged on each fixed underframe; a support frame for supporting ductile cast iron pipes is arranged on each transport vehicle; each transport vehicle is slidably connected with the corresponding fixed underframe; and each transmission mechanism is connected between an output end of the drive motor and the corresponding transport vehicle. According to the ductile cast iron pipe conveying device provided by the invention, one power source is adopted for simultaneously driving the two transmission mechanisms to drivethe transport vehicles to transport, so that the effect that the transport vehicles on two sides move synchronously at the constant speed is ensured, the stability of a ductile cast iron pipe conveying process is ensured, and the positions of the transport vehicles can be conveniently and accurately controlled; before the conveying is started, a lifting platform and the ductile cast iron pipes are lifted up; after the conveying is finished, the support frames are returned to designated positions; and the damage to the outer surfaces of the ductile cast iron pipes caused during a conveying process can be effectively avoided.

The invention discloses a medical ostomy bag, which comprises an excrement receiving bag and a separator. The excrement receiving bag is a bag body and is provided with an excrement receiving openingand an overflowing opening; the size of the excrement receiving opening is matched with that of a human body orificium fistula, a pasting area is arranged on the periphery of the excrement receiving opening, and medical glue is arranged on the pasting area; the overflowing opening is formed in the tail of the excrement receiving bag and internally provided with a self-closing lock; and the self-closing lock is in a closed state under the effect of excrement liquid. The separator comprises an upper box and a lower box; the upper box is arranged on the lower box; openings are formed in the bottom of the upper box and the top of the lower box correspondingly; a cannula is arranged at the top of the upper box and can be inserted in the overflowing opening; the lower box can move relative to the upper box; a water filtering plate is arranged at the opening of the top of the lower box; and a flow guiding opening is formed in the bottom of the lower box. After the cannula is inserted in the overflowing opening, the self-closing lock is opened, and the excrement liquid in the excrement receiving bag flows into the upper box through the cannula. Through the medical ostomy bag, the problem that the capacity of an ostomy bag is insufficient can be solved, and the medical ostomy bag is suitable for incontinence patients lying in bed for a long time.

The invention discloses a dust collector bellows rotation fatigue strength test machine, comprising a pedestal, an electric cabinet arranged on one side of the pedestal and at least one group of counter weights arranged above the pedestal; the electric cabinet is provided with at least one group of clamps which are identical with the counter weights in structures; the clamp comprises a tension mandrel, a tension sleeve in cooperation with a tension mandrel screw thread pair; and the tension mandrel is connected to a transmission assembly. The invention has double motors and 6 working stations, and can perform multiple groups of tests; a ball head plunger is installed inside the clamp and can be installed on or disassembled from a rotation shaft, which is easy for the operation staff to clamp the product off-line; the clamps and the counter weights adopt identical structures and a principle and are easy to clamp; the free end of the tension sleeve is provided with a boss, which prevents the bellows from following up and slipping during the rotation; each working station has a limiting cylinder, which guarantees the test process to be stable; the transmission structure is simple and easy to maintain; the motor is equipped with an independent speed regulator, which is easy to regulate the speed; and the invention adopts the photo electric device, and stable and reliable in working.

The invention relates to a medical appliance for orthopedic surgery, in particular to a steel plate for medical equipment. The steel plate provided by the invention comprises a steel sheet and a spherical ring, wherein the steel sheet is provided with a spherical hole in which the spherical ring can be arranged, the inner wall of the spherical hole is provided with an internal friction groove, the outer wall of the spherical ring is provided with an external friction groove which is anastomotic with the internal friction groove, and a positioning pin is riveted with the steel sheet. The steel plate provided by the invention has the advantages that the inner hole of the spherical hole is a tapered thread hole, therefore, the screw subjected to connection is not easy to drop from the spherical hole, and the operation is simple; the appearance of the spherical ring and the inner hole of the steel sheet are spherical, after the spherical ring and the steel sheet are assembled, the spherical ring can rotate freely in the spherical hole and is not easy to drop from the spherical hole; the outer wall of the spherical ring and the friction groove on the inner wall of the spherical hole effectively increase the frictional force between the spherical ring and the steel sheet, so that the spherical ring is easy to orientate; and the positioning pin can effectively prevent the following rotation of the spherical ring when the screw is screwed into the steel plate.

A base for installing the partion in railway carriage is composed of the fixed front and back supporting plates, an internal supporting frame between said supporting plates, and two elastic parts between front or back supporting plate and said internal supporting frame. It has high bidirectional buffering effect.

The invention discloses an efficient tightening device for quick coupling assembly. The device comprises a base, a driving device with a reduction gearbox, a moment limiter and a clamping device, wherein the driving device is fixedly mounted on the base, the moment limiter is rigidly connected with the driving device, and the clamping device is movably connected with the base; and the tightening torque can be quantitatively controlled, precise thread assembly between parts can be completed, the reject ratio of product assembly is greatly reduced, meanwhile, the operation is easy, and the product assembly efficiency is greatly improved.

The invention relates to a dual-substrate triangular arc support-blade asymmetrically-combined rotary flexible shaft supporting tube, comprising an inner tube, elastic support blades and rigid support blades, wherein the elastic support blades and the rigid support blades are fixedly on and integrated with the outer surface of the inner tube, the distance between the top of the elastic support blades and the tube core of the inner tube is the same with the distance between the top of the rigid support blades and the tube core of the inner tube, the rigid support blades are arranged on the outer surface of the inner tube corresponding to the central angle of the inner tube less than or equal to 180 degree, the total number of the elastic support blades and the rigid support blades is 3-8, a cambered blade left petal and a cambered blade right petal form one elastic support blade, the bottom of the blade left petal and the bottom of the blade right petal are fixed on the outer wall of the inner tube, the top of the blade left petal and the top of the blade right petal are integrated into a whole, and the blade left petal, the blade right petal and the outer wall of the inner tube form a curved-edge triangle cavity. The invention has the advantages of no following rotation phenomenon, small vibration and greatly prolonged service life, and prevents the inner tube and the rotary flexible shaft from being stuck.

The invention relates to the technical field of locking devices, and discloses a bolt following rotation preventing device which comprises a sliding plate, a mounting plate and two plate sleeves. The plate sleeves are provided with sleeved connection parts, sleeve holes are formed in the sleeved connection parts, mounting holes and sliding grooves are formed in the mounting plate, the sleeved connection parts are inserted into the mounting holes, fixing pieces are inserted into the sliding grooves, the fixing pieces can slide along the sliding grooves, the fixing pieces are connected with the plate sleeves and the sliding plate, a clamping groove is formed in the sliding plate, and a limiting hole is formed in the position, corresponding to the clamping groove, of the mounting plate. A rotating shaft sequentially penetrates through the clamping groove and the limiting hole, the two ends of the rotating shaft are connected with the sliding plate and the mounting plate correspondingly, the clamping groove is provided with a limiting part and an unloading part which communicate with each other, the unloading part communicate extends towards the two sides of the limiting part, the rotating shaft is provided with an abutting connection part connected with the limiting part, the abutting connection part and the limiting part can be disconnected or connected by driving the rotating shaft to rotate, and the abutting connection part is connected in the unloading part in a sliding manner. According to the technical scheme, the bolt following rotation preventing device can avoid bolt following rotation, and the potential safety hazards that hands are pinched and people are hurt are avoided.

The invention relates to a hot grinding machine technique in medium-density artificial board production line, specially a hydraulic tension apparatus technique in gas adjusting mechanism of spindle millstones of hot grinding machine, the gas between tension rod and hydraulic cylinder is linked with that of the spindle millstones, where the hydraulic cylinder is composed of belt exhaust-pressure testing joint, O rings, box body, oil inlet and so on, with the assurance of the oil way of the safe and reliable hydraulic tension apparatus, the pressure variation of pressure oil of oil way system in the hydraulic cylinder makes the gas variation course of the spindle millstones become soft, not producing impact phenomenon.

The invention relates to a structure and an installation method of a flow-through type profile tower plate. The structure comprises a supporting ring, a supporting beam and tower plate sub-blocks assembled in the supporting ring, each tower plate sub-block comprises a side plate, a supporting plate and a plurality of layers of sectional materials in the vertical direction, and a plurality of sectional materials are arranged on each layer in the horizontal direction. The sectional materials penetrate through the holes formed in the supporting plate, the two ends of the sectional materials are inserted into the holes formed in the side plate, the contact positions of the sectional materials and the holes are fixed through spot welding, tower plate sub-blocks are formed, the holes in the supporting plates and the holes in the side plates provide supporting and limiting for the sectional materials, the installation precision of the sectional materials is improved, the supporting plate and the side plate can also serve as tower plate supporting beams, and the structural strength of the tower plate is improved. The corners of the adjacent tower plate sub-blocks enclose to form a complete buckling groove, the tower plate sub-blocks are buckled through pressing plates, the pressing plates are provided with connecting holes corresponding to the buckling grooves, the supporting beams and the supporting rings are provided with positioning holes corresponding to the buckling grooves, and the tower plate sub-blocks are fixed by inserting fixing bolts, so that the tower plate is mounted, the displacement of the tower plate is limited, and the tower plate is convenient to dismount.

The invention discloses an auxiliary device for engine gear tightening. The auxiliary device comprises a fixed plate and at least two positioning pins, wherein a plurality of pin holes are axially formed in the fixed plate, the positioning pins are movably inserted into the pin holes, a clamping assembly which is bulged to one side of the fixed plate is arranged in the middle of the fixed plate, the clamping assembly comprises a connecting block which is connected with the fixed plate, a clamping block which can be inserted into a gear groove of a gear and a connecting rod which is used for connecting the clamping block with the connecting block, the connecting rod is movably inserted into the connecting block, and a spring sleeves the connecting rod between the connecting block and the clamping block. According to the auxiliary device, the problem of rotation of the gear and the problem of damage to the gear can be effectively prevented. The invention further discloses an engine geartightening method. A motor gear system can be quickly tightened by using the method, so that the assembly efficiency and the production safety are increased, and the labor intensity is reduced.