72results about How to "Play the role of anti-loosening" patented technology

The invention discloses a comb-type bridge expansion joint plate structure and a cleaning device thereof. The comb-type bridge expansion joint plate structure comprises a first beam body, a second beam body arranged on one side of the first beam body, a comb plate supporting plate and a first comb-type expansion joint plate, wherein preformed grooves are formed in the first beam body and the second beam body respectively; an expansion joint is arranged between the first beam body and the second beam body; the comb plate supporting plate is arranged in the preformed grooves; the comb plate supporting plate is fixedly connected with the first beam body and the second beam body through fixing rivets; the first comb-type expansion joint plate is arranged in the comb plate supporting plate; anda second comb-type expansion joint plate is arranged on one side of the first comb-type expansion joint plate. The comb-type bridge expansion joint plate structure achieves the anti-seismic bufferingfunction; the strength of the structure at the expansion joint is improved; accumulated water and dust in the expansion joint are convenient to clean away; the internal structures of the expansion joint are prevented from being affected by the accumulated water; and the problem is solved that the first beam body and the second beam body squeeze each other to cause potential safety risks.

The invention discloses a detachable anti-loosing component for screws. The anti-loosing component comprises a main locking piece and an auxiliary locking piece, wherein the main locking piece is in a cylinder shape, and an orthohexagonal countersunk is opened on the surface of the cylinder; a locking component group is arranged on the outer circumferential wall of the main blocking piece and comprises main locking teeth, flexible arms and shifting blocks; and the auxiliary locking piece is in a non-circular shape, a circular countersunk is arranged on the surface of the auxiliary locking piece, and auxiliary locking tooth-shaped grooves are circumferentially distributed along the outer circumference of the circular countersunk on the upper surface of the auxiliary locking piece. During mounting, the auxiliary locking piece is arranged in an auxiliary blocking piece groove of a connection board, the main blocking piece is screwed along with screws to enter the circular countersunk of the auxiliary locking piece; and when the screws are fastened, the main locking teeth are meshed with the auxiliary locking tooth-shaped grooves, and the main locking piece can only clockwise rotate corresponding to the auxiliary locking piece. The anti-loosing component of detachable screws has the advantages of being simple in structure, good in anti-loosing performance, wide in application range and convenient to mount and dismount.

The invention relates to the technical field of medical apparatus and instruments, in particular to a thread discontinuous detachable expansion bone nail. The thread discontinuous detachable expansion bone nail is composed of an operational cap, a locating strip, thread strips, a conical threaded rod, a bone nail body, side grooves and an expansion hole. A pair of side grooves is formed in the side wall of the bone nail body. The two side grooves are communicated with the expansion hole. Each thread strip is arranged inside each side groove. The inner side wall and the outer side wall of each thread strip are respectively in an arc plane with threads. The directions of the threads of the outer walls of the two thread strips are opposite. The thread strips are in clearance fit with the side grooves where the thread strips are arranged, and can horizontally move inside the side grooves where the thread strips are arranged along the side direction. According to the thread discontinuous detachable expansion bone nail, possibility that the bone nail drops out along the clockwise direction or along the anti-clockwise direction, an fixing effect is improved, and meanwhile operation is simpler and more convenient to achieve, operation damage is smaller, and safety is higher.

A bivariate tooth type double anti-loose nut belongs to technology field of anti-loose nut. The bivariate tooth type double anti-loose nut changes single inclined plane to double inclined plane, and includes 6g-9g bolt, basic tooth type angle 60 degree, the upper two anti-loose inclined plane is 30degree included angle with axes, two bevel included angle are 120, tooth top is crossing point of two inclined plane, thereby bivariate tooth type anti-loose nut with plain nut shape can be produced without distinguishing orientation in using. Extending chamfer angle at nut end-face screw thread of flange surface, leaving little surface at flange surface, forming cantalever applied force on flange surface, using steels elastic to enhance anti-loose performance.

The invention relates to a floating water level measurement instrument for rock engineering investigation, and a measurement method thereof. The floating water level measurement instrument for rock engineering investigation comprises support frames, a pullback device, a rocker type winding reel, a measurement rope, a floating mark and a gravity drag reduction head; the pullback device is connectedbetween the support frames; the upper end of the support frame is installed with the rocker type winding reel through a bearing; the measurement rope is wound on the rocker type winding reel; the lower end of the measurement rope is connected with the gravity drag reduction head; the floating mark is put on the gravity drag reduction head; and furthermore, the floating marker sleeves the measurement rope. The floating water level measurement instrument for rock engineering investigation, and the measurement method thereof in the invention can solve the following problems: when water level measurement is carried out, a measurement head can meet with resistance by entering water; therefore, deviation exists between the fall point position and the predetermined position of the measurement head; the error of a measurement value is relatively high due to increasing of the released rope; because the sinking speed of the measurement head is relatively rapid, when the measurement head sinks to the lowest end of a drill hole, too many released ropes exist due to continuous rotation of winding reel by inertia, etc.

The invention discloses an anti-loosing device and a coal mining machine. The anti-loosing device is used for threaded connection pieces. The anti-loosing device comprises anti-loosing pads and anti-loosing seats; the anti-loosing pads are each provided with an anti-loosing pad center hole; the threaded connection pieces are each arranged in the anti-loosing pad center hole in a penetration mode and are each connected with a connected piece; the anti-loosing seats are each sleevedly arranged on the threaded connection piece and are each clamped tightly by the anti-loosing pad. Therefore, the anti-loosing device has the advantages of simple structure, convenient assembly and disassembly and high efficiency, and improves the assembly working efficiency.

The invention provides a cam loosening preventing mechanism applied to an underwater hoop connector. The cam loosening preventing mechanism comprises an upper fixing support, a lower fixing support, acam, a loosening preventing ROV bottom plate, an ROV wrench support and an ROV wrench, wherein the upper fixing support and the lower fixing support are arranged on a connector housing plate; the camis positioned between the upper fixing support and the lower fixing support; the loosening preventing ROV bottom plate is arranged above the upper fixing support; the ROV wrench support is arranged on the loosening preventing ROV bottom plate; the ROV wrench is arranged in the ROV wrench support; a middle shaft is arranged at the upper end of the cam and penetrates through the upper fixing support to be connected with the ROV wrench; two annular hole grooves are formed in the cam; loosening preventing pins are arranged in the annular hole grooves; pin holes are formed in the connector housingplate, and the tails of the loosening preventing pins are inserted into the pin holes; two double-end studs are further arranged between the upper fixing support and the lower fixing support; and twobosses with arc-shaped grooves are arranged on the side face of the cam. According to the cam loosening preventing mechanism, dual loosening preventing is achieved, the reliability of a project is guaranteed, and the quality of the project is improved.

The invention provides an inner and outer end cover fixing structure for a steam turbine generator and a mounting method thereof, and relates to the field of air-cooled steam turbine generators. A support bolt is mounted on an inner end cover, and an internal thread is arranged in a screw of the support bolt. The bushing is mounted on the outer end cover, and an internal thread is arranged in thebushing. One end of the connecting screw is in threaded fit with the internal thread of the supporting bolt, and the other end is in threaded fit with the internal thread of the bushing. One fasteningnut locks one end, close to the outer end cover, of the connecting screw, and the other fastening nut locks one end, close to the inner end cover, of the connecting screw. The installation method mainly comprises the three steps of preparation, pre-installation and formal installation, so that the inner end cover and the outer end cover of the steam turbine generator are connected more stably, and the anti-loosening effect is achieved. The pre-installation work before formal installation can ensure that the fixing structures of the inner and outer end covers of the steam turbine generator canbe installed as required.

The invention relates to an shock-proof check connector, which comprises a connector shell and a connecting nut arranged outside the shell and a check mechanism arranged between the connecting nut and the connector shell for preventing the connecting nut from rotating backward and becoming loose, wherein the check mechanism comprises a circle combining snap spring, an elastic ratchet ring and a baffle plate, which are compactly arranged between the connecting nut and the connector shell along an axis in turn; a retainer ring with an L-shaped axial section is sleeved outside the circle combining snap spring; the retainer ring is in rotation-stopping fit with the circle combining snap spring; the circle combining snap spring is arranged on the connector shell in a clearance manner and is in rotation-stopping fit with the elastic ratchet ring; an elastic suspension arm extending circumferentially is integrally arranged on the outer circle of the elastic ratchet ring; the suspended end of the elastic suspension arm is provided with a raised gear rising outward radially; and a ratchet in corresponding unidirectional meshing with the raised gear is arranged in the connecting nut. The connector can effectively perform checking and is suitable to be used in environments with shocking.

The invention belongs to the technical field of spinning, and discloses a rolling cutter for ultrasonic high-speed rotary blowing discharging. The rolling cutter is provided with a rolling cutter body, a central deep and long hole is formed in the shaft end face of the right side of the rolling cutter body, a section of threads is formed in the shaft end face of the central deep and long hole, andthe threads are connected with the rolling cutter body and a high-speed rotary joint; bearings are installed at the left end and the right end of the rolling cutter body, a synchronous wheel is fixedto the tail end of the shaft part of the left side of the rolling cutter body, the synchronous wheel and the rolling cutter body are connected through a tensioning sleeve, and the synchronous wheel is connected with a motor in a toothed mode. A thread hole in the right side of the rolling cutter body is connected with the rotary joint, the central deep and long hole communicates with a normal hole and a tangential hole, thus the gas is vented to the circumferential surface of the cutter body, and the action of blowing out waste, auxiliary feeding, and heat dissipation for an ultrasonic tool head is achieved. A protective blade is in a sine wave S-shaped pattern, the angle and height of the protective blade are both consistent with a cutting blade, and thus the service life of a die can beprolonged; and the wavelength on the left side is longer than that on the right side, and the action of preventing the ultrasonic tool head from loosening can be achieved.

The invention relates to a device for detecting and adjusting gaps on two sides of a rotating body in a closed or semi-closed cavity. The device comprises a connecting shaft sleeve, bearings, an adjusting seat, an adjusting locking nut, a protective cover, bearing limiting nuts and a connecting seat, wherein the connecting shaft sleeve is connected with the adjusting seat through the bearings, theconnecting shaft sleeve can freely rotate relative to the adjusting seat and is axially of an integral linkage structure, an inner hole of the connecting seats is in threaded transmission connectionwith an outer circle of the adjusting seat, and the adjusting seat is provided with a locking device and a sealing protection device; the connecting seat is arranged on the side cover of an outer cover of a rotating body, the connecting shaft sleeve is connected with a shaft head at one end of the rotating body, and the adjusting seat is rotated to drive the rotating body to move in the axial direction so as to achieve the effects of adjusting and detecting; and scale values are arranged on the connecting seat, and the accurate position of adjustment is displayed. The device has the beneficialeffects that during adjustment, the axial gaps are eliminated, the positioning of the rotating body can be accurately adjusted, and the actual side distance can be detected.

The invention belongs to the technical field of mechanical seal and discloses a parallel dual-end-surface mechanical seal. The seal comprises a spring seat exposed and mounted on one side of a shaft sleeve, wherein a pressing component is mounted on one side of the spring seat; a main spring is pressed and mounted on the other side of the spring seat; a movable ring seat capable of integrally rotating with the shaft sleeve is also mounted on the shaft sleeve; the end, away from the spring seat, of the main spring is clamped on one side of the movable ring seat; a movable ring is mounted on theother side of the movable ring seat, and the movable ring is mounted on the shaft sleeve; a first stationary ring and a second stationary ring are mounted on the side end surface of the movable ringin parallel; a cavity is formed between the first stationary ring and the second stationary ring; a wave-shaped spring is mounted in the cavity; a stationary ring pressing cover is mounted on the endsurfaces of the first stationary ring and the second stationary ring; an anti-rotating component is mounted between the second stationary ring and the stationary ring pressing cover; and a flow channel is also obliquely arranged on the stationary ring pressing cover. According to the parallel dual-end-surface mechanical seal, two stationary rings share one movable ring in parallel; the structure is simple and ingenious; the wave-shaped spring is arranged between the two stationary rings; the structure is simple, and the elastic force is moderate; and the parallel dual-end-surface mechanical seal is applied to sealing of cooling water.

The invention discloses a novel locknut assembly special for a railway. The assembly comprises a nut and a spring gasket, the side edge of the spring gasket is provided with a notch communicated with an inner gasket body through hole and forms two ends with the free ends inclining upwards and downwards respectively, one end is provided with a protruding strip part further extending outwards in the inclining direction of the end, and the position, surrounding a threaded hole, of the nut is provided with an arc-shaped through groove allowing the protruding strip part to penetrate through. The spring gasket with the two ends with the free ends inclining upwards and downwards respectively is arranged between a to-be-connected piece and the nut, the nut can be pushed to be slightly away from the to-be-connected piece through elastic force, so that the internal thread of the nut and the external thread of a screw rod of a bolt are locked, and the anti-loosening effect is achieved; and the protruding strip part penetrating through the arc-shaped through groove of the nut is arranged on one end, so that the protruding strip part can be actively supported by a hand, the elastic force of the spring gasket is counteracted, and the nut is convenient to disassemble.

The invention discloses a blade bolt for a controllable-pitch propeller, and belongs to the field of ships. Wherein the paddle bolt comprises a main bolt and a plurality of pushing pieces, the main bolt comprises a screw rod and a screw cap, a plurality of screw holes are formed in the screw cap, and one pushing piece is inserted into each screw hole. According to the invention, the plurality of pushing pieces abut against the blades, and under the action of the pushing pieces, the blades can be tightly attached to the crankpin disc, so that the friction force between the blades and the crankpin disc is increased, the looseness prevention is realized, and the connection and fixation of the blades and the crankpin disc are realized in a labor-saving manner.

The invention relates to the technical field of explosion-proof motor junction boxes, in particular to an auxiliary temperature measurement junction box for a YBX4 high-efficiency explosion-proof three-phase asynchronous motor. The junction box comprises a junction box base, a wiring board arranged in the junction box base, a wire passing device fixed at the bottom of the junction box base, four junction box buckets arranged on the two sides of the junction box base respectively, and a junction box cover connected with the upper portion of the junction box base, and the junction box base and the junction box cover are of a hexagonal structure. The bottom of the wire passing device is connected with a wiring terminal, and a compression nut, a metal blocking rod, a sealing ring and a metal gasket are sequentially arranged in the junction box bucket from outside to inside. The junction box is excellent in sealing performance, good in wiring effect, simple in structure and convenient in wiring, the stator is easy to replace, the use requirements of temperature measurement of the bearing and the stator of the motor can be met at the same time, and the operation safety and reliability of the temperature measurement junction box of the YBX4 high-efficiency explosion-proof three-phase asynchronous motor are ensured.

The invention provides a small-diameter tube extrusion solder sealing executive device with the pressure balance function. According to the small-diameter tube extrusion solder sealing executive device with the pressure balance function, two clamping heads and two electrode tips are fixed to four quick-changing bases supported by insulating plates which are fixedly connected with air cylinders respectively through clamp nuts, the clamping heads and the electrode tips are driven by the four air cylinders respectively, each clamping head and a sealing cavity body are connected into a whole, a sealing cavity is formed after the two sealing cavity bodies close up, extrusion solder sealing of a small-diameter tube is achieved in the sealing cavity, the sealing cavity is tightly clamped by a clamp with a safety structure, the sealing cavity is sealed in the mode of combination among a high-pressure sealing cavity, an integrated rubber sealing gasket and a local Teflon sealing gasket, the requirement of the two electrode tips for movement is met through two conductive soft copper strips, gas supply is carried out on the sealing cavity through a high-pressure gas path system, and it is ensured that balance between the internal pressure and the external pressure of the small-diameter tube in the welding process.

The invention discloses a printing-ink-circulation type ink fountain device of a high-speed printing press. The printing-ink-circulation type ink fountain device comprises a printing ink roller (1). An ink fountain (2) is connected to one side of the printing ink roller (1). The ink fountain (2) is internally provided with an ink scraping blade (3). An ink inlet pipe (4) and a guide groove (5) are arranged above and below the ink scrapping blade (3) respectively. A water pump (6) is connected to one end of the ink inlet pipe (4). An ink storage box (8) is connected to the water pump (6) through a guide pipe (7). The guide groove (5) is internally provided with a linkage rod (9). A plurality of adjusting bolts (10) are connected to the linkage rob (9), and adjusting bolts (11) are further connected to the two ends of the linkage rod (9). The upper end of the ink fountain (2) is provided with an overflow pipe (12), and the overflow pipe (12) is connected with the guide pipe (7). By means of the printing-ink-circulation type ink fountain device, the ink adding frequency can be lowered, and the printing speed is increased; and the printing-ink-circulation type ink fountain device further has the beneficial effects of preventing color difference, being high in adjusting efficiency, high in adjusting accuracy and good in adjusting structure stability and preventing skinning.

The invention belongs to the technical field of loose-proof fasteners and discloses a combined-type loose-proof nut. The combined-type loose-proof nut comprises a nut body and an elastic loose-proof part arranged on the nut body, wherein a counterbore is formed in one end face of the nut body in the axial direction; the elastic loose-proof part is fixedly arranged in the counterbore; a threaded hole is formed in the elastic loose-proof part and coaxial with a central threaded hole of the nut body; elastic parts are uniformly circumferentially arranged on the lower end face of the elastic anti-loose part; the elastic parts are integrated with the elastic anti-loose part; the lower ends of the elastic parts are in contact with the bottom of the counterbore; and a limiting structure is arranged at the opening of the counterbore and is in contact with the upper end face of the elastic anti-loose part. According to the combined-type loose-proof nut, the nut body, the elastic loose-proof part and the elastic parts are combined together; the nut body and the elastic anti-loose part are both connected with a screw rod or a bolt; the elastic loose-proof part holds the thread or the screw tightly to play a loose-proof role; and the elastic parts provide stable axial elastic force, so that the loose-proof effect is good. Therefore, the combined-type loose-proof nut is suitable for promotion and application.