13results about How to "Prevent radial movement" patented technology

The utility model discloses a nylon hinge convenient for adjusting torsion of a spring. The nylon hinge is characterized by further comprising an adjusting device which is arranged in a first hinge seat and a second hinge seat and enables the first hinge seat and the second hinge seat to be automatically opened or closed by adjusting the torsion; the adjusting device comprises limiting sleeves arranged in the two ends of the first hinge base and the two ends of the second hinge base, a positioning sleeve, a rotating rod penetrating through the limiting sleeves and used for adjusting torsion, and a torsional spring with one end connected with the rotating rod and the other end connected with the positioning sleeve. When the rotating rod rotates, the torsion spring is driven to deform, the larger the rotating rod rotates, the larger the deformation of the torsion spring is, and the larger the torsion between the first hinge seat and the second hinge seat is, so that the larger the opening and closing force of a part which is connected with the first hinge seat and the second hinge seat and needs to rotate is; the requirements on the opening and closing force of the hinge in different use scenes can be met.

The present application relates to the technical field of welding, and specifically discloses a motor liquid-cooled shell welding device, which comprises a workbench, a rotating disc, an inner-outer positioning mechanism, a coaxial positioning mechanism and a pressing mechanism. The inner-outer positioning mechanism, the positioning shaft, the insert, the positioning locking assembly and the pressing mechanism are used for multi-dimensional guarantee of the concentricity of the inner cylinder, the outer cylinder, the annular plate and the welding machine from the bottom, the top and the side, so that the problems of weld offset, uneven penetration, one-side wide and one-side narrow of the welding seam of the welding machine and the like caused by the rotation centrifugal force of the inner cylinder, the outer cylinder and the annular plate are effectively avoided. Meanwhile, the pressing mechanism is provided with a plurality of circumferentially uniformly distributed pressing assemblies, which are matched with the bearing steps on the inner cylinder and the outer cylinder to realize the up-down bidirectional limiting of the annular plate, prevent the annular plate from floating due to the centrifugal force during the rotation and affect the welding quality of the welding seam, and the wear-reducing roller can prevent the annular plate from floating and radial movement due to thermal deformation without affecting the rotation of the workpiece.

This invention discloses a sensing spring adjustment mechanism for mask mounting, belonging to the field of semiconductor lithography equipment technology. It includes a mounting base, a rotating shaft rotatably mounted on the mounting base, and a detection lever fixedly connected to the rotating shaft. Double torsion springs are sleeved at both ends of the rotating shaft, with the middle connecting end of the double torsion spring abutting against the bottom of the mounting base. A translational limiting mechanism is provided at the bottom of the mounting base, cooperating with the connecting end of the double torsion spring to guide and radially limit the movement of the connecting end. This invention uses double torsion springs instead of the traditional single-sided spring structure, providing a more balanced and stable reset force for the detection lever, ensuring the consistency and accuracy of the detection lever's reset action. Simultaneously, the double-sided support structure significantly reduces the risk of large deformation of the spring due to external force interference, fundamentally avoiding the problem of the spring detaching from the preset mounting slot.

The utility model belongs to dust removal technical field, concretely provides a base station and dust collecting system for dust catcher. The base station of current existence cannot take into account the problem of the appearance and convenience of base station, for this, the utility model provides a base station for dust catcher, it includes main part and base. Among them, the main part is used for fixing the dust catcher, the base is arranged in the bottom of the main part, and with the main part rotatable connection, so that the dust catcher fixed to the base station can rotate relative to the base station. The utility model solves the above technical problem.

The utility model belongs to dust removal technical field, concretely provides a base station for dust catcher. The base station of current existence cannot take into account the problem of the appearance and convenience of base station, for this, the utility model provides a base station for dust catcher, it includes main part, base and drive arrangement. Among them, main part is used for fixing dust catcher;The base is set in the bottom of main part, and is rotatable with main part, so that the dust catcher fixed to the base station can rotate relative to the base station;Drive arrangement is used for driving main part to rotate. The utility model solves above -mentioned technical problem.

The utility model discloses a positioning tool for processing inclined holes on the top surface of a glass forming mould, which comprises a base plate, a supporting plate, a positioning block and an arc-shaped plate, the supporting plate is arranged on the base plate in a turnover manner, the positioning block is arranged on the supporting plate, a V-shaped groove is arranged on the front surface of the positioning block in an inward concave manner, the glass forming mould is placed on the supporting plate, and the arc-shaped plate is arranged on the glass forming mould. The back face of the glass forming mold makes contact with the inner wall of the V-shaped groove, an arc-shaped convex rib located above the positioning block is arranged on the back face of the glass forming mold, an arc-shaped groove is formed in the bottom of the arc-shaped convex rib in an inwards-concave mode, the arc-shaped plate abuts against the back face of the glass forming mold, and the top of the arc-shaped plate extends into the arc-shaped groove. A vertical plate located behind the cambered surface plate is arranged on the positioning block, a first stud backwards penetrating through the vertical plate is arranged on the back face of the cambered surface plate, positioning of the glass forming mold is enhanced, and the angle of the positioning block can be adjusted through vertical overturning of the supporting plate so as to adapt to the angle of an inclined hole.

The application provides a damping device and a wheelchair. The damping device comprises a support, a first limiting rod arranged on the support, a driving device fixedly connected with the support, an output end of the driving device connected with a wheel, the driving device being used for driving the wheel to rotate relative to the support, a swing arm fixed on the driving device, one end of the swing arm being rotatably connected with the support, the other end of the swing arm being provided with a connecting portion, an elastic member, the inside of the elastic member being hollow, one end of the elastic member being connected with the connecting portion, one end of the first limiting rod extending into the elastic member from the other end of the elastic member, the other end of the elastic member being abutted against or fixedly connected with the support, and the elastic member being elongated or contracted along the extension direction of the first limiting rod when the swing arm rotates. The application can improve the safety of the damping device.

The application relates to a bidirectional ratchet structure and a bidirectional ratchet wrench, wherein the bidirectional ratchet structure comprises a shell, a ratchet, a tenon, a first pawl, a second pawl, a first elastic piece, a second elastic piece and a stop block; the shell is internally provided with a cavity; the ratchet is rotatably arranged in the cavity; the tenon is fixedly connected with the ratchet; the first pawl and the second pawl are respectively arranged on the two sides of the ratchet; the first elastic piece is arranged on the side of the first pawl away from the ratchet; the two ends of the first elastic piece are respectively abutted against the inner wall of the cavity and the first pawl; the second elastic piece is arranged on the side of the second pawl away from the ratchet; the two ends of the second elastic piece are respectively abutted against the inner wall of the cavity and the second pawl; the stop block is rotatably arranged between the first pawl and the second pawl; the two ends of the stop block towards the first pawl and the second pawl are respectively provided with stop protrusions; the stop protrusions push the first pawl or the second pawl to be disengaged from the ratchet. The application has the effect of being capable of meeting more working conditions.

The utility model relates to a stereo garage lifting platform positioning device. The stereo garage lifting platform positioning device comprises a sliding device and a limiting device which are arranged between a guide sliding way and a lifting arm. The guide slideways are channel steel; an opening of the channel steel faces the lifting arm, and the sliding device comprises a radial guide device and a circumferential guide device; the limiting device comprises a positioning hole, a positioning rod, a guide sleeve, a connecting rod, a turntable and a speed reducer; the edge part of the turntable is hinged with the other end of the connecting rod; the radial guide device comprises a first pin shaft and a first roller; the circumferential guide device comprises a second roller, a second pin shaft and a bracket; the lifting platform has the beneficial effects that when the lifting platform is flush with the parking platform and a vehicle needs to be parked and picked, the telescopic positioning rods arranged on the lifting arms are inserted into the positioning holes, so that hard limiting of the lifting arms up and down is achieved, the lifting platform is prevented from shaking, and potential safety hazards are eliminated.

The utility model belongs to the field of ball screw testing, and particularly relates to a device for testing the sliding performance of a ball screw, which comprises a base and a clamping and fixing mechanism, a first bearing is arranged at the top of the base, a first rotating shaft is matched in the first bearing, the clamping and fixing mechanism comprises a mounting sleeve, and the mounting sleeve is arranged at the top of the first rotating shaft. A pair of symmetrical L-shaped plates is arranged outside the mounting sleeve, third bearings are arranged at one ends of the L-shaped plates respectively, a connecting rod is arranged between the third bearings, threads are arranged at the two ends of the connecting rod respectively, the directions of the threads are opposite, a rotary knob is arranged at one end of the connecting rod, and L-shaped sliding blocks are matched with the two ends of the connecting rod respectively. According to the utility model, the reverse threaded connecting rod is driven by the knob, so that synchronous and symmetrical movement of the L-shaped sliding block is realized, concentric clamping of the ball screw by the clamping plate is ensured, eccentric or radial movement is avoided, the problem of test data distortion caused by easy eccentric or radial movement in the clamping process is solved, and the test efficiency is improved.

This invention provides a device and method for machining internal threads of a tee pipe fitting, relating to the technical field of internal thread machining equipment. The invention includes a bottom support frame, with a fixing plate mounted on the upper end of the bottom support frame. A first mounting seat is fixedly mounted on the upper end of the fixing plate, and a second mounting seat, adjustable horizontally in the XY axis direction by a servo motor, is provided on the upper end of the fixing plate. A milling cutter is mounted on the second mounting seat. A limiting part is rotatably mounted on the side of the first mounting seat near the second mounting seat, wherein the limiting part can clamp and fix the tee to be machined. This invention adopts a double clamping and positioning structure of inner support and outer clamping. The inner support expands outward from the inside of the workpiece port to form an inner wall support, and the radial clamping arm, in conjunction with the clamping strip, clamps synchronously from the outer wall, ensuring that the tee to be machined and the turntable remain precisely coaxial, avoiding radial movement and eccentric rotation of the workpiece during machining.

This utility model relates to the field of tobacco equipment machinery technology, and in particular to a half-section brush tube tobacco storage cabinet belt cleaning device, including a brush roller shaft, a half-section brush tube, and a fixing bolt group; the half-section brush tubes are symmetrically arranged on the outside of the brush roller shaft, and the two symmetrical half-cylinder brush roller shafts are joined together to form a cylindrical body, and the surface of the cylindrical body is provided with spiral brushes arranged in a continuous spiral pattern; the fixing bolt group is simultaneously installed through the cylinder walls of the two half-section brush tubes and the brush rollers; both ends of the brush roller shaft are also provided with a rotation drive component for transmitting torque to the brush roller shaft, and an axial positioning component for constraining the axial displacement of the brush roller shaft; by the fixing bolt group simultaneously penetrating the radial through holes of the cylinder walls of the two half-section brush tubes and the brush roller shaft, a transverse and longitudinal two-way locking structure is formed between the half-cylinders and between the cylinder and the roller shaft. This design ensures that the brush tubes rotate smoothly during operation under high-speed rotation conditions, and are fixed firmly in both the axial and radial directions, without displacement.

The application discloses a bearing for a vertical shaft, comprising an outer ring and an inner ring, two rows of retainers are arranged between the outer ring and the inner ring, rolling bodies are assembled in the retainers, the retainers comprise an upper edge part, a pocket part and a lower edge part, the upper edge part is arranged along the axial direction of the outer ring, the lower edge part is arranged along the radial direction of the outer ring, the pocket part is arranged obliquely, a plurality of pockets are arranged on the pocket part, pocket beams are formed between adjacent pockets on the pocket part, a plurality of outer convex ribs are arranged obliquely on the outer circumferential wall of the retainer, a plurality of inner convex ribs are arranged obliquely on the inner circumferential wall of the retainer, and the inner convex ribs and the outer convex ribs are arranged at positions corresponding to the pocket beams. The bearing has the advantages of simple structure, effective solution to the problems of uneven distribution of lubricating grease, double-row bearing lubricating grease flow and poor sealing reliability in the prior art, and effective improvement of the operation stability and service life of the bearing.