32results about How to "Avoid self-locking phenomenon" patented technology

The invention discloses a high-friction-resistance ship arresting method. The high-friction-resistance ship arresting method is characterized in that the two ends of a high-friction-resistance arresting cable or a high-friction-resistance arresting barrier are fixedly connected with a force controller, and the ultimate tension of the force controller on the high-friction-resistance arresting cable or the high-friction-resistance arresting barrier is smaller than the tensile strength of the high-friction-resistance arresting cable or the high-friction-resistance arresting barrier; a plurality of buoys which are distributed at equal intervals are fixed to the high-friction-resistance arresting cable or the high-friction-resistance arresting barrier, so that the high-friction-resistance arresting cable or the high-friction-resistance arresting barrier overall floats on the water and forms a ship arrester; the ship arrester and a ship are controlled to meet a certain relational expression, and when the ship runs into the high-friction-resistance arresting cable or the high-friction-resistance arresting barrier, the ship is effectively arrested through the ship arrester. The high-friction-resistance ship arresting method has the advantages that the situation that arresting is failed due to the fact that the arresting cable or the arresting barrier slides to the bottom of the ship in the process that the ship arrester arrests the ship can be effectively prevented, and accordingly ships in common bow shapes, especially forward bent bow shapes are effectively arrested.

The invention relates to a numerical control small-modulus straight bevel gear shaper comprising a lathe bed, a rocking table assembly, a workpiece box assembly, a hydraulic system and a numerical control system. The lathe bed is provided with the rocking table assembly and the workpiece box assembly; and the hydraulic system is arranged on the two sides of the lathe bed. The rocking table assembly comprises a rocking table support, a tool holder transmission mechanism, a rocking table drum wheel, a tool holder device, a stroke adjusting mechanism, a gear shaping cutter movement main shaft servo motor, a rocking table rotating servo motor and a rocking table rotating worm gear and worm mechanism connected with the rocking table rotating servo motor and is characterized in that the tool holder device comprises a tool holder base, a ram, a tool base support, a tool base, a tool back-off movement adjusting device, a gear angle adjusting mechanism, a gear shaping tool, a tool height adjusting mechanism and a pressure angle adjusting mechanism. The numerical control small-modulus straight bevel gear shaper has the beneficial effects of being compact in structural layout, easy and convenient to adjust and operate, large in tool back-off amount, wide in adjusting range, accurate in tool back-off movement and capable of avoiding the self-locking phenomenon, improving the gear machining precision and meeting the machining requirements of high-precision small-modulus straight bevel gears.

An oscillating spring bolt for a door lock is arranged on a lock body and comprises a bolt body, a bolt base, a pin shaft and elastic elements, wherein the bolt base is arranged on the lock body, and the bolt body is hinged onto the bolt base through the pin shaft and can oscillate around the pin shaft. A front bolt surface and a back bolt surface are respectively arranged on two sides of the bolt body, the front bolt surface and a door leaf plane form a front oblique angle alpha, and the back bolt surface and the door leaf plane form a back oblique angle beta. A second blind hole is arranged at the position on one side of the bolt base deviating from the pin shaft, a bolt base inclined surface is arranged on the bolt base on the periphery of the second blind hole, and the bolt base inclined surface and the vertical surface of the door leaf plane form a bolt base oblique angle gamma. A first blind hole is arranged on the bolt body at the position corresponding to the second blind hole, and the elastic elements are respectively arranged in the first blind hole and the second blind hole and push and press the bolt base and the bolt body toward two sides. The oscillating spring bolt reduces door push force, avoids door leaf self locking, ensures door leaf positioning reliability, and can be applied to various door locks, especially special unlatched doors.

The invention discloses a high-friction-resistance ship arresting method. The high-friction-resistance ship arresting method is characterized in that the two ends of a high-friction-resistance arresting cable or a high-friction-resistance arresting barrier are fixedly connected with a force controller, and the ultimate tension of the force controller on the high-friction-resistance arresting cable or the high-friction-resistance arresting barrier is smaller than the tensile strength of the high-friction-resistance arresting cable or the high-friction-resistance arresting barrier; a plurality of buoys which are distributed at equal intervals are fixed to the high-friction-resistance arresting cable or the high-friction-resistance arresting barrier, so that the high-friction-resistance arresting cable or the high-friction-resistance arresting barrier overall floats on the water and forms a ship arrester; the ship arrester and a ship are controlled to meet a certain relational expression, and when the ship runs into the high-friction-resistance arresting cable or the high-friction-resistance arresting barrier, the ship is effectively arrested through the ship arrester. The high-friction-resistance ship arresting method has the advantages that the situation that arresting is failed due to the fact that the arresting cable or the arresting barrier slides to the bottom of the ship in the process that the ship arrester arrests the ship can be effectively prevented, and accordingly ships in common bow shapes, especially forward bent bow shapes are effectively arrested.

The invention discloses an external connection type normal-locking hydraulic disc brake device. The device comprises a main clamp body, an external connecting frame, a mounting plate, jackscrews, guide screws, a piston and a spring; and the device is characterized in that a piston hole is formed in the bottom of the main clamp body, the piston is pressed in the piston hole in a matched mode, a spring guide hole is formed in the middle of the main clamp body, the spring is compressed in the spring guide hole, guide threaded holes are formed in the middles of the left side face and the right side face of the main clamp body respectively, guide groove holes are formed in the left side face and the right side face of the external connecting frame respectively, the front ends of the guide screws are installed in the guide threaded holes through threads, the rear ends of the guide screws are clamped in the guide groove holes, four threaded mounting holes are uniformly distributed in the rearend face of the external connecting frame, four guide unthreaded holes are uniformly distributed in the end face of the bottom of the main clamp body, the rear ends of the jackscrews are connected into the threaded mounting holes through threads, the front ends of the jackscrews are installed in the guide unthreaded holes, a supporting guide column is fixedly connected to the mounting plate through riveting, the supporting guide column is installed in a guide hole, and a pit is formed in the end face of the outer side of the piston.

The invention relates to a mechanical sliding sheet translation type precise seeding mechanism which comprises a seed selecting mechanism, a seed filling mechanism and a seed filling-discharging mechanism. The seed filling mechanism comprises a mechanical translation driving mechanism fixedly connected with the side wall of a seed filling box, a translation sliding sheet structure is arranged on one side opposite to the mechanical translation driving mechanism and comprises a U-shaped sliding groove in fixed arrangement and a supporting sliding sheet, and one horizontal end of the supporting sliding sheet is fixed on the side wall of the seed filling box while the other end of the same can slide in the U-shaped sliding groove; a power output shaft of a small motor of the seed filling-discharging mechanism is horizontal, an upper linkage gear is meshed with an upper rack frame, a lower linkage gear is meshed with a lower rack frame, the upper rack frame is fixedly connected with an upper cover plate, and the lower rack frame is fixedly connected with a lower bottom plate; each of the upper linkage gear and the lower linkage gear is a non-full-tooth gear, and only one of the upper linkage gear and the lower linkage gear is in a meshed state; the small gear respectively drives the upper cover plate and the lower bottom plate to be in reciprocating motion through the two rack frames to realize seed filling and seed discharging.

A drive apparatus for boarding and unboarding devices, in particular for passenger doors, boarding ramps, retractable steps and the like on public transport vehicles having an electric drive motor the driven element of which is connected to the input element of a first reduction gear the output element of which is coupled to the actuation devices for the boarding and unboarding devices where the drive apparatus is constructed as a compact drive where the electric drive motor, the first reduction gear and a second reduction gears as well as an energizable clutch are disposed axially behind each other inside a tubular housing between the first reduction gear and the second reduction gear.

The invention discloses a normally-locked hydraulic disc brake device which comprises main clamp body, adjusting screw plug, limit screw, piston, limit location step, first sealing ring, second sealing ring, spring, third sealing ring, fourth sealing ring and positioning screw, step guiding hole and threaded hole are arranged in the main clamp body, adjusting screw plug is connected at bottom of the main clamp body through the threaded hole, adjusting gasket is arranged between the adjusting screw plug and the main clamp body, piston is pressed into the step guiding hole through matching, limit screw is connected at bottom of the adjusting screw plug through threads, spring is arranged in step guiding hole of the large shaft end, the piston is provided with first groove and second groove outside the large shaft end, first sealing ring and second sealing ring are respectively arranged in the first groove and the second groove, the piston is provided with third groove and fourth groove outside the small shaft end, and third sealing ring and fourth sealing ring are respectively arranged in the third groove and the fourth groove. The overall structure design of the invention is ingenious and convenient to use.

The invention relates to a reel type accurate hole-seeding device. A seed filling and unloading mechanism comprises a small motor which is fixed relative to a seed filling box and a reel, the reel ismade of a soft material, two sides of the reel are located through rotating shafts, the middle of the reel is divided into an upper layer structure and a lower layer structure, and the upper layer structure and the lower layer structure are located on two sides of a bottom plate of the seed filling box and are both installed in guide grooves at the bottom of the seed filling box; the upper layer structure and the lower layer structure are both provided with the same holes, the small motor drives the reel to rotate through one rotating shaft, when the holes at the upper part of the reel are aligned with the holes of the seed filling box, the holes at the lower part of the reel are staggered with the holes of the seed filling box, seeds conforming to the size of the holes fall into the holesof the seed filling box at the moment, the seed filling process is completed, and when the holes at the lower part of the reel are aligned with the holes in the seed filling box, the holes at the upper part of the reel are staggered with the holes of the seed filling box, and at the moment, seeds fall into the holes of the lower bottom plate and fall from an inside pipeline of a seed falling platform to a holed tray. The seed filling process and the seed unloading process are periodically linked up, and continuous work can be realized.

The present invention relates to an air duct seed selection translational precision seeding device, comprising a seed selection mechanism, a seed filling mechanism, a seed filling-unloading mechanism; the seed selection mechanism includes a seed cleaning component and a sorting component; the seed filling mechanism includes a The mechanical translation drive mechanism fixedly connected to the side wall of the seed filling box is provided with a translation slide structure on the opposite side of the mechanical translation drive mechanism. The translation slide mechanism includes a U-shaped slide groove and a support slide fixedly arranged. One end of the supporting sliding piece can slide in the U-shaped sliding groove; the power output shaft of the filling-unloading mechanism is provided with a lower connecting gear and an upper connecting gear, the upper connecting gear meshes with the upper rack frame, and the lower connecting gear and The lower rack frame meshes; the small motor drives the upper cover plate and the lower bottom plate to reciprocate through the two rack frames to realize seed filling and unloading.

The invention relates to a reel type accurate hole-seeding device. A seed filling and unloading mechanism comprises a small motor which is fixed relative to a seed filling box and a reel, the reel ismade of a soft material, two sides of the reel are located through rotating shafts, the middle of the reel is divided into an upper layer structure and a lower layer structure, and the upper layer structure and the lower layer structure are located on two sides of a bottom plate of the seed filling box and are both installed in guide grooves at the bottom of the seed filling box; the upper layer structure and the lower layer structure are both provided with the same holes, the small motor drives the reel to rotate through one rotating shaft, when the holes at the upper part of the reel are aligned with the holes of the seed filling box, the holes at the lower part of the reel are staggered with the holes of the seed filling box, seeds conforming to the size of the holes fall into the holesof the seed filling box at the moment, the seed filling process is completed, and when the holes at the lower part of the reel are aligned with the holes in the seed filling box, the holes at the upper part of the reel are staggered with the holes of the seed filling box, and at the moment, seeds fall into the holes of the lower bottom plate and fall from an inside pipeline of a seed falling platform to a holed tray. The seed filling process and the seed unloading process are periodically linked up, and continuous work can be realized.

The invention relates to a device for detecting an axial clearance of a double-row tapered roller bearing. A base plate of an L-shaped support is provided with a U-shaped groove for a mandrel to pass through, a fixed seat is installed on the base plate, and an opening for the detected bearing to pass through is formed in the fixed seat. A baffle ring extending inwards is arranged on the fixed seat, and the outer ring of the detected bearing is arranged in the fixed seat. One end of the outer ring of the detected bearing is connected with the base plate, and the other end of the outer ring of the detected bearing is connected with the baffle ring on the fixed seat and is axially limited. The step-shaped mandrel is installed on the base plate through the detected bearing, a locking ring is connected to a threaded shaft of the mandrel in a screwed mode, and a shaft shoulder on the mandrel is connected with one end of the inner ring of the detected bearing and is axially limited. A meter frame is installed on a vertical plate of the L-shaped support, and a measurement meter is installed on the meter frame. The detecting end of the measurement meter is connected with the end face of the mandrel, and the center axis of the detection end coincides with the rotation central axis of the mandrel. The device for detecting the axial clearance of the double-row tapered roller bearing is simple in structure and convenient to operate, detection efficiency can be improved, and detection accuracy can also be improved.

The invention discloses a pool water outlet device for automatically cleaning residues, comprising a pool and a downpipe, the pool and the downpipe communicate with each other to form a square water cavity, the water cavity communicates with the bottom of the pool and is sealed and connected with a filter plug , the filter plug adopts a square ring slider structure and the ring is fixedly connected with a filter screen, the filter plug is obliquely sealed and slidably connected to the inner wall of the water chamber, and the water chamber is located on the side of the lower end of the filter plug to open a sundry chamber , the sundry box is provided with a sundry box, the bottom of the sundry box is fixedly connected with a filter screen and communicated with the downwater pipe, and the water chamber is located at the high end side of the filter plug and is sealed and connected with the downwater pipe. The advantage is that the present invention displaces the impurities on the filter plug by gravity, so that it does not hinder the passage of water flow, and reduces operational troubles through the concentrated treatment of impurities, and can be removed from the bottom of the filter plug under the reciprocating action of the push plate. Recoil it several times to improve the efficiency of impurity removal.