33results about How to "Play the role of axial positioning" patented technology

The invention discloses a magnetic push suspension bearing unit, comprising a shaft, an inner magnetic ring, an outer magnetic ring, an auxiliary bearing, a limiting block and a bracket, wherein the inner magnetic ring is arranged at the near end part of the shaft; the corresponding outer magnetic ring is arranged on the bracket; the adjacent surfaces of the two magnetic rings are the same in polarity; an inner magnetic barrel for magnetizing in a radial manner is arranged on the shaft; the inner magnetic barrel is sleeved with an outer magnetic barrel for magnetizing in the radial manner, and the outer magnetic barrel is fixedly arranged on the bracket; the adjacent surfaces of the two magnetic barrels are the same in polarity; the auxiliary bearing is also arranged between the shaft and the bracket; corresponding limiting block and limiting ball are arranged at the end of the shaft; a direct contact rolling body is not formed between the shaft and the bracket; the shaft and the bracket form a suspension state by virtue of a magnetic push shaft; the shaft and the bracket are free of friction, free of abrasion, high in transmission efficiency, free of cooling and lubricating, and long in service life, and the magnetic push suspension bearing unit has high applicable value in high-speed fields of aerospace and the like.

The present invention relates to a split combination type engine oil filter housing, aims to stop housing from rotating together with the engine oil filter when replacing filter element. The Audi cars engine oil filter housing in the invention includes a upper bowl (1) and a lower bowl (2) that connected through screw threads; the upper bowl (1) passes through the central hole on the heat radiator and connects with output pipeline of Audi cars engine oil base plate through screw threads by a nut (3); the outer surface of a outlet (11) on the upper bowl (1) is provided with a tapered cylinder convex structure (12) that can limit radial rotate between the upper bowl (1) and the heat radiator on Audi cars engine oil base plate; a hole with taper is set on the center of the tapered cylinder convex structure and two side of the hole is provided with a shallow slot openings; the shape of the tapered cylinder centre hole fits with Audi cars engine oil base plate heat radiator convex area. The present invention is provided with simple structure, low cost, convenient operation, secure and reliable operation, and has a broad application foreground.

The invention relates to a tool set for changing a downhole damaged casing and cementing. The tool set comprises a hydraulic internal cutter, a downhole junk fishing tool, a remaining casing milling tool and an external insertion butt joint cementing tool, an external insertion guiding shoe is arranged at the lower end of the external insertion butt joint cementing tool, an extension cylinder is rotatably connected at the upper end of the external insertion guiding shoe, a circulating cylinder is rotatably connected at the upper end of the extension cylinder, a plurality of rows of ash injection holes are arranged on the peripheral wall on the middle section of the circulating cylinder, a sealing cylinder is rotatably connected at the upper end of the circulating cylinder, an R-shaped sealring is embedded at the upper part of a female thread at the lower end of the sealing cylinder, a barb faces upwards, a butt joint is rotatably connected in the female thread at the upper end of thesealing cylinder, a conical female thread is arranged at the upper end of the butt joint, an inner chamfer of the butt joint is arranged on a lower port of the butt joint, the upper part of the innerchamfer is narrow, and the lower part of the inner chamfer is wide; and the inner diameters of the sealing cylinder, the circulating cylinder, the extension cylinder and the external insertion guidingshoe are adaptive to the outer diameter of the casing. The tool set for changing the downhole damaged casing and cementing is simple in structure and is convenient to operate, the production cost andthe downhole risk are low, the operations of butt jointing and setting are simple, and the sealing reliability is high.

A multi-purpose reverse mineral grain crusher is characterized in that a crusher cylinder is cylindrical, an upper bearing box is mounted at the upper part of the crusher cylinder, and a lower bearing box is mounted at the lower part of the crusher cylinder; a bearing block through cover is connected onto the upper bearing box, and a bearing block airtight cover is connected with the lower bearing box; upper and lower conical roller bearings are mounted in the upper bearing box and the lower bearing box; the upper bearing box is located at the upper part of the crusher cylinder, and the lower bearing box is located at the lower part of the crusher cylinder; a driving gear and a driven gear are located at the top of the upper bearing box, and a driving transmission shaft and a driven transmission shaft are transmission shafts of the driving gear and driven gear respectively; in order to prevent the axial movement of the driving transmission shaft and the driven transmission shaft, both the driving transmission shaft and the driven transmission shaft adopt stepped shafts and penetrate through the bearing block through cover, middle parts are located in the crusher cylinder, and bottom parts are connected with the bearing block airtight cover; sanding vanes are mounted on the driving transmission shaft and the driven transmission shaft. The multi-purpose reverse mineral grain crusher has the characteristics of high efficiency, environmental pollution reduction and energy consumption reduction.

The invention discloses a vibration arm connecting structure used for vibrating equipment. The vibration arm connecting structure comprises a vibrating arm and a drive support, the drive support comprises a left connecting lug and a right connecting lug, a horn-shaped through hole is formed in the left connecting lug, a straight-through hole is formed in the right connecting lug, a connecting pinshaft which penetrates through the horn-shaped through hole and the straight-through hole is assembled between the left connecting lug and the right connecting lug, the left end of the connecting pinshaft is a horn-shaped end, a right inner thread hole is formed in the right end of the connecting pin shaft, a flat sleeve is connected to the right side wall of the right connecting lug, a tension bolt is in threaded connection inside the right inner thread hole, and a right end cover is slidingly connected to the tension bolt. One end of the vibrating arm is located between the left connectinglug and the right connecting lug and connected with the connecting pin shaft; one end of the connecting shaft is designed into a horn-shaped end, the other end of the connecting pin shaft is designedinto a cylindrical shaft in a structural form, in this way, a locking component for the horn-shaped end is omitted, and it is avoided that an original locking component is easy to deform.

The invention provides a contact seat for an electric switch machine. The contact seat comprises a contact seat base body, fixing plates used for assembling a static contact set and a support used forassembling a movable contact set. The support comprises a left support and a right support which are symmetrically connected to the contact seat base body through movable contact shafts respectively;a tension spring is arranged between the left support and the right support; fixing plates corresponding to the positions of the left support are arranged on the two sides of the left support respectively; fixing plates corresponding to the positions of the right support are respectively arranged on two sides of the right support; one end of the movable contact shaft is provided with an adjustingplate capable of rotating relative to the contact seat base body; and a tension spring is arranged between the right adjusting plate and the left adjusting plate. According to the contact seat for the electric switch machine, the tension spring between the left adjusting plate and the right adjusting plate and the tension spring between the left support and the right support form a double-tension-spring system, conversion power of the movable contact set is improved, and conversion stability of the movable contact set is improved.

The invention provides a hinge pin device and a coal mining machine. The hinge pin device is applied to the coal mining machine and comprises taper sleeves and a hinge pin, wherein the taper sleeves are mounted at two ends of the hinge pin. The hinge pin device is characterized by further comprising a shaft sleeve connected onto the hinge pin in a sleeving manner, and lubricant accommodating holes are formed in the shaft sleeve. With adoption of the technical scheme, on the one hand, by means of the lubricant accommodating holes formed in the shaft sleeve of the hinge pin device, normal lubrication and operation of the hinge pin can be guaranteed effectively for a long time, and a manual oil injection link is omitted; on the other hand, a dust ring is mounted on the shaft sleeve of the hinge pin device, so that the working environment between the hinge pin and the shaft sleeve can be improved effectively, and the service life of the hinge pin device is prolonged; further, openings and steps are formed on the taper sleeves of the hinge pin device, accordingly, displacement of the hinge pin can be prevented effectively, and an axial positioning function is realized.

The invention discloses a rotary type cutting and fishing integral fisher. The rotary type cutting and fishing integral fisher comprises an upper connector provided with an internal thread. The upper connector is connected with a lower connector provided with an external thread. The inner side of the lower end of the upper connector is provided with L-shaped tracks. The lower connector is sequentially sleeved with an upper bearing ring, a slip cone body and a lower bearing ring from top to bottom. The part between the slip cone body and the lower connector is sequentially sleeved with an upper roller pin sealing sleeve, an upper roller pin bearing, a lower roller pin bearing and a lower roller pin sealing sleeve from top to bottom. The upper end and the lower end of the upper roller pin bearing are provided with upper roller pin bearing spacer rings correspondingly. The upper end and the lower end of the lower roller pin bearing are provided with lower roller pin bearing spacer rings correspondingly. The slip cone body is sleeved with a slip. The outer side of the upper end of the slip is provided with L-shaped keys. The rotary type cutting and fishing integral fisher is simple in structure, convenient to use, long in service life, capable of descending a well along with a cutter and conducting one time of cutting milling and fishing operation on a pipe column to be cut and milled, and suitable for cutting milling and fishing of the pipe column.

The invention relates to a masonry chisel sheath, a masonry chisel and a quick disassembly and assembly method of the masonry chisel. The masonry chisel sheath includes a hand protecting plate and a handle. The hand protecting plate is installed on the handle, and the handle is provided with a mounting hole for inserting a chisel rod of the masonry chisel. The handle is divided into two parts which are a left half handle and a right half handle. The left half handle and the right half handle are connected together by a fastening sleeve to form the handle. The masonry chisel includes the chiselrod of the masonry chisel, a chisel head is arranged at the lower end of the chisel rod of the masonry chisel, and the masonry chisel sheath is installed at the upper end of the chisel rod of the masonry chisel. A circle of concave positioning groove is machined in the chisel rod of the masonry chisel in the circumference direction of the chisel rod. A left half mounting hole of the left half handle is internally provided with a positioning protrusion matched with the concave positioning groove and playing an axial positioning role on the chisel rod of the masonry chisel. The rapid disassembly, assembly and replacement of the masonry chisel sheath and the chisel rod of the masonry chisel are realized, from the perspective of a user, all the masonry chisels with the same shapes of the chisel rods of the masonry chisels need only be equipped with one masonry chisel sheath, and the cost is saved.

The invention discloses a pump shaft sleeve for a double suction pump. The pump shaft sleeve comprises a shaft sleeve body. A cylindrical cavity structure is arranged in the shaft sleeve body. An annular groove is formed in the inner wall of the left side of the shaft sleeve body. An arc structure smoothly connected with the shaft sleeve body is arranged on the outer side of the right end of the shaft sleeve body. An annular step is arranged at the position, corresponding to the arc structure, of the inner wall of the shaft sleeve body. Multiple through holes are evenly formed in the peripheryof the shaft sleeve body. Compared with the prior art, the pump shaft sleeve has the following beneficial effects that the annular groove of the shaft sleeve cooperates with a pump shaft to form a closed oil cavity, the lubricating time of the shaft and a bearing can be effectively increased, and the service life of the shaft can be prolonged; the through holes are formed in the shaft sleeve body, and therefore concentration of bubbles on the surface of the shaft sleeve can be reduced, and the bad influence generated by cavitation on the shaft sleeve is avoided; and a part matched with the step formed by an impeller and the pump shaft is arranged at the right end of the shaft sleeve, the axial locating function can be achieved on the impeller, the outer side of the shaft sleeve and the impeller are in smooth transition, resistance to water flow is reduced, and the work efficiency of the double suction pump is improved.

A multi-reverse granular mineral crusher is characterized in that a crusher barrel is a cylindrical barrel, the upper part of the crusher barrel is provided with an upper bearing box, and the lower part of the crusher barrel is provided with a lower bearing box; an upper bearing box is connected with a bearing seat unclosed cover, and a lower bearing box is connected with a bearing seat closed cover; an upper tapered roller bearing is arranged in the upper bearing box, and a lower tapered roller bearing is arranged in the lower bearing box; the upper bearing box is arranged at the upper part of the crusher barrel and the lower bearing box is arranged at the lower part of the crusher barrel; a driving gear and driven gears are both located at the top of the upper bearing box, a driving transmission shaft is a transmission shaft of the driving gear, and driven transmission shafts are transmission shafts of the driven gears; in order to prevent the axial movement of the driving transmission shaft and the driven transmission shafts, both the driving transmission shaft and the driven transmission shafts are stepped shafts, the driving transmission shaft and the driven transmission shafts both pass through the bearing seat unclosed cover, the middle parts are in the crusher barrel, and the bottom parts are connected with the bearing seat closed cover; and sanding blade plates are correspondingly arranged on the driving transmission shaft and the driven transmission shafts. The multi-reverse granular mineral crusher has the beneficial effects of being high in efficiency and capable of lowering the environmental pollution and lowering the energy consumption.

The invention mainly relates to an inverted vertical roller for a ship and belongs to the technical field of ships. The inverted vertical roller for the ship comprises a shaft, a check ring, a roller, a first bearing, a bearing seat and a second bearing, wherein the roller is sleeved outside the shaft, two ends of the shaft extend outside the roller, the check ring is arranged at the free end of the shaft, the first bearing is the single direction thrust ball bearing, the first bearing and the bearing seat are arranged between the roller and the shaft, the bearing seat is screwed on the shaft and the outer wall of the bearing seat and a gap is formed between the inner wall of the hole of the roller, and the first bearing is arranged between the end face of the bearing seat and the inner end face of the hole of the roller. After by adopting the structure, compared with the prior art, the inverted vertical roller for the ship has following advantages: possible axial direction dislocation between the roller and the shaft can be avoided after that the roller is used for a long time, the roller can roll accurately and convenience is met for practical use.

The invention discloses an impactor with a quick-change structure. The impactor comprises a drill bit and a clamping fiber sleeve, wherein the end of the drill bit is sleeved with the end of the clamping fiber sleeve; a guide groove, a guide key and a locking part are arranged between the attaching faces of the drill bit and the clamping fiber sleeve; the guide groove and the guide key extend in the axial direction; and the locking part is used for achieving axial positioning. According to the impactor with the quick-change structure, the guide groove, the guide key and the locking part are used for replacing clamping ring connection in the prior art, when the impactor is disassembled, the locking part is unlocked, the drill bit and the clamping fiber sleeve are pulled in the extending direction of the guide groove and the guide key, namely the axial direction of the drill bit, the drill bit and the clamping fiber sleeve are separated in the axial direction, and disassembly is achieved. In the process, the step that a clamping ring is taken down by disassembling an outer cylinder and the clamping fiber sleeve in the prior art does not exist, and therefore the outer cylinder and theclamping fiber sleeve are prevented from being disassembled, and the problem that the drill bit is difficult to disassemble due to the fact that threads of the outer cylinder and the clamping fiber sleeve are too locked is solved.

The invention relates to the technical field of circuit breakers, and especially discloses circuit breaker moving contact with an arc contact. The circuit breaker moving contact comprises a contact system, a contact support, contact springs, a connecting shaft and a flexible connector, wherein the contact system comprises a plurality of contact pieces, the contact pieces are all sleeved on the connecting shaft, the end parts, which are located at two sides of the connecting shaft, of each contact piece are respectively a butt joint end abutted against the contact spring and a connecting end connected with the flexible connector, the side edge of each connecting end is provided with a limiting rod for the butt joint of the connecting end, the middle part of the limiting rod is provided witha concave cavity, the bottom surface of the concave cavity is lower than the surface of the other positions of the limiting rod, the connecting end of at least one contact piece is in butt joint withthe bottom surface of the concave cavity to form an arc contact, the other contact pieces form a main contact, and the butt joint end of the arc contact protrudes out of the butt joint end of the main contact. By adopting the structure, the circuit breaker moving contact with the arc contact which can effectively protect the main contact and can provide reliable high breaking capacity and long electric service life under high voltage.

The invention provides a heavy-duty warehouse gate opening and closing machine which comprises a rack. A drive piece is fixed onto the rack and is fixedly connected with one end of a pulley block through a connecting piece; the pulley block is connected with a deflecting pulley through a rope; one end of the rope is fixed onto the pulley block; the other end of the rope is fixedly connected with one end of a gate body; and the other end of the gate body is hinged to the left side of a groove on the ground surface through a hinge support. The heavy-duty warehouse gate opening and closing machine provided by the invention is simple in structure, ingenious in design, low in cost, safe and stable; in the gate opening and closing process, the space required for rotating the gate body is small,so that the requirement on the height of a warehouse is low; and an oil cylinder drives the gate body to rotate around the hinge seat so as to open and close the gate through two groups of pulley blocks, so that the gate body opening speed is fast, the efficiency is high, the time is saved, a horizontal space is saved, and the heavy-duty warehouse gate opening and closing machine is particularly suitable for occasions with low height of a warehouse and a small horizontal space.

The invention relates to a floating disc mechanism. The floating disc mechanism comprises a fixing frame, a first executing piece, a tray and a transition disc, wherein the first executing piece, thetray and the transition disc are arranged on the fixing frame, the extending end of the first executing piece is connected with the bottom of the tray, the tray is internally provided with a semicircular arc-shaped groove matched with the outer cylindrical surface of the transition disc, the tray is further provided with a disc clamping group used for clamping the transition disc, the outer cylindrical surface of the transition disc is circumferentially provided with a groove, a first arc-shaped boss matched with the groove is arranged at the position, corresponding to the groove, of the arc-shaped groove, end face structures matched with the end faces of spools in shape are arranged on the two end faces of the transition disc, and the diameters of the two end faces of the transition discare equivalent to the diameters of the end faces of the spools. The floating disc mechanism is arranged between two spool conveying frames, so that the whole space is saved, the structure is compact,and the operation is safe and reliable; when a full wheel and an empty wheel are switched in wire winding, seamless transition is realized, winding is not scattered, winding quality is better, and working efficiency is higher.

The invention provides a submerged electric pump for a well, and belongs to the technical field of machinery. The submerged electric pump provided by the invention is used for solving the problems of less bearing capacity, low efficiency and high production cost of the existing submerged electric pump for a well. The submerged electric pump for the well comprises a shell, a motor, a main shaft and a pump body, wherein the main shaft is connected with a motor rotary shaft; the pump body consists of a plurality of pump units, and a connecting seat is connected between the pump body and the shell; one end surface of the connecting seat is provided with bolt holes, and the side wall of the connecting seat is provided with first mounting holes which are corresponding to the bolt holes; third mounting holes are arranged between any two adjacent first mounting holes; each pump unit is composed of a guide blade shell of a tubular integral structure and a vane wheel which is placed in the guide blade shell; the guide blade shell is provided with a shaft sleeve which is made of a nitrile rubber buna material; and two long side edges of each first mounting hole and each third mounting hole are provided with reinforcing ribs which are bent toward the interior of the connecting seat. The submerged electric pump for the well has the advantages of great bearing capacity, high efficiency and low production cost.