37results about How to "Screw in smoothly" patented technology

The invention provides a screwing assembly machine for a pressure gauge. The screwing assembly machine comprises a base mounting plate, a gauge stand fixture, an upright post, a gear motor and a gauge head fixture, wherein the gauge stand fixture is fixed to the base mounting plate and is used for fixing a gauge stand of the pressure gauge; one end of the upright post is fixed to the base mounting plate; an upper vertical plate is arranged on the other end of the upright post; a compaction cylinder is arranged on the upper vertical plate; a piston rod of the compaction cylinder is positioned right above the gauge stand fixture; the gear motor is arranged on the base mounting plate; a rotating head is in linkage connection on a rotating shaft of the gear motor; and the gauge head fixture is arranged on the rotating head and aligns to the gauge stand fixture. The screwing assembly machine has the beneficial effects that the pressure gauge can be automatically screwed on the gauge stand, so that the production efficiency is improved, and the production cost is reduced.

The invention discloses a tension relax device and tension relax method, and belongs to the technical field of rail transit infrastructure construction devices, the tension relax device comprises a tension-pull rod and a guide seat, wherein the tension-pull rod is provided with a first end and a second end; the first end is an operation end, and the first end can be connected with an operation piece to be tension relax; the second end is connected with a driving device and can drive the tension-pull rod to rotate through the driving device; the tension-pull rod is provided with first threads along the direction from the first end to the second end; the guide seat is internally provided with an inner cavity penetrating through the two ends, the tension-pull rod penetrates through the innercavity, at least a part of the inner cavity wall of the inner cavity is provided with second threads, and the second threads are in threaded connection with the first threads; after the tension-pull rod is separated from steel bar, the first threads of the tension-pull rod is in threaded connection with a retraction nut, so that the tension-pull rod can be continuously retracted out of the inner side surface of the die, so that the manual secondary adjustment of the tension-pull rod is avoided, so that the automation of the tension relax action is realized, the production efficiency is improved, and the production cost is reduced.

The invention discloses a telegraph pole support. The telegraph pole support comprises a fixing box, wherein a spiral elevator is arranged on the fixing box and comprises a screw rod perpendicular tothe ground; the lower end of the screw rod is positioned in the fixing box; the bottom end face of the screw rod is rotationally connected with a connecting rod; a first gear is arranged at the upperportion of the connecting rod; a spiral blade is arranged at the middle portion of the connecting rod; the bottom end of the connecting rod is conical; an installing plate is arranged on the screw rod; a motor is arranged on the installing plate; a second gear engaged with the first gear is arranged on an output shaft of the motor; a first through hole allowing the spiral blade to penetrate is formed in a bottom plate of the fixing box; a first folding rod is arranged on the side face of the fixing box; an arc groove is formed in one end portion of the folding rod; and a telegraph pole is in tight contact with the inner concave face of the arc groove. The spiral blade is screwed into the ground to provide a fixing point for the folding rod, supporting is firm, use is convenient, and practicability is high.

The invention discloses a fastening sleeve capable of preventing a connection part from being scratched. An anti-friction ring is arranged around the outer side of a sleeve body of the fastening sleeve; the front end of the anti-friction ring is in an arc shape; mutual rotation can be performed between the outer side of the arc shape and an outer lining; and thus the surface friction between the connection part and the sleeve is transferred to the spherical surface friction of the arc surface and the inner wall of the outer lining, the frictional force is reduced, thus the connection part is screwed in more smoothly through the sleeve, meanwhile the sleeve body can be prevented from making direct contact with the connection part, the surface damage to a connected part is directly and completely eliminated during bolt assembling, the rusting problem, caused by the damage, of the connected part is completely eliminated, and the attractive appearance and practicability of a product are guaranteed.

The invention provides a new gear hobbing fixture with internal spline shaft, which comprises a base and a positioning rod integrally formed with it, the end of the positioning rod far away from the base is provided with a first thread, the base and the positioning The stepped part between the rods is detachably connected with a first positioning sleeve, and a second positioning sleeve symmetrically arranged with the first positioning sleeve is also provided through the positioning rod, and the base is also threaded with a A positioning nut, the positioning nut is threadedly engaged with the outer wall of the first positioning sleeve. A new gear hobbing fixture with internal spline shaft according to the present invention is designed for the hobbing of gears with internal splines, so that the pitch circle meshing of the spline connection in the use state is stable, preventing gear hobbing When there is eccentricity, it can effectively avoid problems such as noise and early failure of bearings, and improve the pass rate.

The invention relates to the technical field of light partition wall board machining, and discloses a ceramsite light partition wall board machining mold. The ceramsite light partition wall board machining mold comprises an upper mold and a lower mold, the upper mold is arranged over the lower mold in a covering mode, and the upper mold and the lower mold are internally provided with a grain structure and a pouring structure; the grain structure comprises first grains, bolts, an annular frame, a grain board, screw holes, a block groove, a first magnet, an annular board, a second magnet, a clamping block and second grains; and the block groove is formed in the middle of the inner side surface of the upper mold, the first magnet is fixedly embedded into the position, in the block groove, ofthe interior of the upper mold, and the first magnet is transversely embedded into the block groove. According to the ceramsite light partition wall board machining mold, the block groove and the detachable annular frame are arranged in the upper mold, the grain board with the different first grains can be fixed into the upper mold, when different light wall boards are machined, the grains on onesides of the wall boards can be changed only by replacing the grain board, mold replacing is not needed for machining, and the production cost is reduced.

The invention discloses an improved type fire extinguisher storage box fixing frame. The fixing frame comprises a rack (7) and in-shell screwing and fixing assembling parts located in the upper end and the lower end of the rack (7), each in-shell screwing and fixing assembling part comprises a thread convex tongue part (8) entering a thread pipe sleeve (91) fixed into a wall (9) in a thread manner, a pushing slippage portion (3) connected with the thread convex tongue part (8) through a bearing, a drive sliding rod (62) capable of entering an inner sliding groove (80) in the thread convex tongue part (8) in a slippage manner, and a suspension joint shaft (5) fixedly connected with the rack (7) and capable of being borne on a rotating disc pipe sleeve (61) fixedly connected with the drive sliding rod (62) in a twisted manner.

The invention relates to the field of corridors, in particular to a large-span corridor between unequal-height high-rise buildings, which comprises a bottom plate layer, a top plate layer, chord pipes, web members and preassembled pipes, elastic plates for the chord pipes to abut against are arranged on the preassembled pipes, and avoiding mechanisms for avoiding the elastic plates when the chord pipes on the top plate layer approach are arranged on the four lower preassembled pipes. The elastic plate can be reset again after successful avoidance; a connecting rod and a first elastic piece are arranged in the preassembling pipe; a positioning groove is formed in the upper surface of the connecting rod, a through hole communicated with the elastic plate and the positioning groove is formed in the preassembling pipe, a positioning rod which penetrates through the through hole and is inserted into the positioning groove is arranged on the elastic plate, and the positioning rod is used for positioning the connecting rod in the preassembling pipe; and the positioning rod is separated from the positioning groove. According to the scheme, the step that workers frequently observe butt joint of the preassembled pipe and the chord pipe is omitted, and the workload and potential safety hazards of the workers are reduced.

The invention discloses a novel fire extinguisher storage box fixing frame. The fixing frame comprises a rack (7) and in-shell screwing and fixing assembling parts located in the upper end and the lower end of the rack (7), each in-shell screwing and fixing assembling part comprises a thread convex tongue part (8) entering a thread pipe sleeve (91) fixed into a wall (9) in a thread manner, a pushing slippage portion (3) connected with the thread convex tongue part (8) through a bearing, a drive sliding rod (62) capable of entering an inner sliding groove (80) in the thread convex tongue part (8) in a slippage manner, and a suspension joint shaft (5) fixedly connected with the rack (7) and capable of being borne on a rotating disc pipe sleeve (61) fixedly connected with the drive sliding rod (62) in a twisted manner.

The invention relates to a connection thread between drilling tool systems of a blasthole drill, and aims to solve the problem of processing of special inch tapered threads of an existing slender-shaft drilling rod: a lengthened lathe with a tilted profiling device is used for processing the thread, and the thread is required to be checked with a special thread ring or feeler gauge, but a general numeric control machine tool cannot be used for processing the thread, so that a certain difficulty in the processing of the thread and inconvenience in user maintenance are caused. The connection thread between the drilling tool systems of the blasthole drill comprises internal and external threads. The connection thread adopts a cylindrical single-line rectangular thread for connection, only has a large diameter and a small diameter without a medium diameter, and is a concave-convex straight tooth with a rectangular axial section taking a tooth shape; the tooth side surface of the connection thread is a working engagement sliding face with a smooth surface; the connection thread adopts small-diameter centered clearance fit. The processing bottleneck of the slender-shaft drilling rod is solved; furthermore, the production period is shortened, and the manufacturing cost is reduced; the precision of the rectangular straight tooth shape is easy to guarantee.

In a die-casting slide fastener slider having a plastically deformable, cantilevered pull-tab attaching lug (5) on a slider body (1), the lug (5) projects from an upper end of a guide post (4) over an upper wing (2) toward a rear end (11) of the upper wing (2) and terminates in a downward end projection (14) spaced from the upper wing (2) by a gap (15) through which an attachment ring (18) of a pull tab (17) is threaded. The lug (5) has a longitudinal hollow (12) through its base to facilitate plastically deforming the lug (5) to reduce the size of the gap (15) after threading. In this structure, since first and second slide cores (22, 23) of a mold for die-casting the slide fastener slider can be inserted from the front and rear sides, it is possible to mold the lug (5) without generating any parting line on its overall appearance.

The invention discloses a threaded type tension nail which comprises a body. A through center hole is formed in the axis of the body, the body comprises a threaded portion and a rod, the threaded portion and the rod are axially integrally formed, a plurality elongated grooves are axially uniformly formed in the outer surface of the rod, the widths of the elongated grooves are gradually increased from the rod to the threaded portion, tips are formed at two ends of each elongated groove, threads with equal crest widths are formed on the outer surface of the threaded portion, the end surface, which is far away from the rod, of the threaded portion is flat, and two V-shaped cutting edges are formed at the front end of each thread. The threaded type tension nail has the advantages that the threaded type tension nail can be smoothly screwed into bones and is good in bone pullout strength and applicable to young patients or patients with good bone quality, and conditions such as nail withdrawal can be prevented.

The invention discloses a vehicle frame connector on a shock absorber. A body of the connector is of a rotary body structure. An inner threaded hole is formed in the center of the body in the axial direction and is a through hole. The inner threaded hole is used for being connected with a screw rod. The bottom face of the body is connected with the lower end of a cylindrical section through a chamfered section. The upper end of the cylindrical section is connected with the lower end of a conical section through a circular arc section. The circular arc section is in smooth transition connection with the cylindrical section and the conical section. The conical section is of a big-end-down structure. The upper end of the conical section is directly connected with the lower end of the small cylindrical section. The upper end of the small cylindrical section is directly connected with the top face of the body. The height of the small cylindrical section ranges from 0.6 mm to 1 mm. According to the vehicle frame connector on the shock absorber, the upper end of the body is adjusted to be the small cylindrical section, and the height design of the small cylindrical section is reasonable; the outer circular face of the small cylindrical section is fixedly welded to a vehicle frame during welding, and the small cylindrical section can effectively block welding slag and prevent the welding slag from entering the inner threaded hole, so that the inner threaded hole is prevented from being damaged, and the screw rod can be smoothly screwed into the inner threaded hole.

The invention discloses a counter weight block joint type taking-out type elevator counter weight device, and belongs to the field of elevator counter weight devices. The counter weight block joint type taking-out type elevator counter weight device comprises a counter weight frame and a counter weight block set located on the inner side of the counter weight frame. The counter weight frame comprises a counter weight frame base, a counter weight frame roof and a pair of counter weight frame edges, wherein a pair of counter weight frame edges are fixedly connected to the left end and the rightend of the upper side of the counter weight frame base. Center inserting holes are chiseled in the center positions of the counter weight blocks from top to bottom, the center position of the upper end of the counter weight frame base is connected with a center stand column, and the upper end of the center stand column penetrates through the center inserting holes and is in threaded connection with a pressing type fastening nut. According to the scheme, the multiple counter weight blocks can be taken out at a time according to the actual operation requirements, in the taking-out and carrying process, relative stability of the multiple counter weight blocks can be guaranteed, slipping and carrying personnel crushing are not likely to happen, safety is improved, one-time reinstalling can beconducted, the dismounting and mounting time is greatly shortened, the operation efficiency is improved, and the elevator maintaining progress is accelerated.