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408results about How to "Smooth disengagement" patented technology

Medium-length hole mixed wedge cut blasting method capable of realizing directed fracture using cutting cartridge bag for solid rock roadway

InactiveCN103983146AReduce unit consumptionControl disturbance damageBlastingEngineeringUltimate tensile strength
The invention discloses a medium-length hole mixed wedge cut blasting method capable of realizing directed fracture using a cutting cartridge bag for a solid rock roadway. According to the method disclosed by the invention, 3-4 pairs of vertical wedge cutting holes are arranged at lower half places of an excavating working face; the vertical wedge cutting holes comprise mirror-arranged primary cutting holes and secondary cutting holes that are arranged at the two sides of the primary cutting holes; the primary cutting holes comprise three blast holes that are arranged side by side; the secondary cutting holes comprise four blast holes that are arranged side by side; 1-2 straight holes are formed in the middle portion of each primary cutting hole; a distance between every two adjacent blast holes in the primary cutting holes is 800-1000mm. According to the method disclosed by the invention, the advantage of directed fracture blasting of the cutting cartridge bag is fully utilized, so that an orifice distance and a row distance of the primary cutting holes are increased, the number of blasting holes is reduced, explosive unit consumption is decreased, disturbance damage to the roadway surrounding rocks by cut blasting is effectively controlled, the original strength and stability of the roadway surrounding rocks are guaranteed, and favourable conditions are provided for repairing and maintenance works during later roadway support and operation progresses.
Owner:HENAN POLYTECHNIC UNIV

Automatic release device of unmanned aerial vehicle parachute

The invention discloses an automatic release device of an unmanned aerial vehicle parachute and relates to the technical field of separation and release devices. The automatic release device aims at solving the problem that the automatic release device of the unmanned aerial vehicle parachute in the prior art causes damage to unmanned aerial vehicle equipment easily. The automatic release device comprises a hook, an upper housing, a lower housing, an upper lock cylinder and a telescopic needle. The top end of the hook is connected with the parachute, the bottom end of the hook is connected with the top end of the upper housing, the lower housing is in butt joint with the upper housing, the upper lock cylinder is arranged in the upper housing and the lower housing, an upper shaft is arranged in the top region of the upper lock cylinder, and the position between the upper shaft and the top end of the hook is connected and sleeved with a parachute rope. The telescopic needle is arranged in the upper lock cylinder and located under the upper shaft. One end of the telescopic needle is in clamped connection with the lower housing, the other end of the telescopic needle abuts against the inner wall of the upper housing, and the outer side of the telescopic needle is sleeved with a telescopic needle spring. The automatic release device is mainly applied to manufacturing of unmanned aerial vehicles.
Owner:中天智控科技控股股份有限公司

Jig

The invention relates to a jig for positioning a radiating fin so as to assemble the radiating fin, in particular to a jig for positioning a radiator assembly so as to assemble the radiator assembly. The jig comprises a main box body provided with a circuit control device and at least one positioning device for clamping a radiator. The positioning device comprises a concave guide positioning piece, two clamping blocks and two cylinders, wherein the concave guide positioning piece is fixedly locked on the main box body by a screw assembly, and both relative sides of both side walls of the concave guide positioning piece are provided with guide grooves; both corresponding positions of both side surfaces of each clamping block are provided with tenons; the two cylinders are fixedly locked to the relative side surfaces of the guide positioning piece of the clamping blocks respectively and connected to the circuit control device by a wire. The two clamping blocks are pushed by the two cylinders to move face to face or in the opposite direction so that a clamped, positioned or assembled main plate of the radiating fin is smoothly taken out; the jig can be also provided with a plurality of positioning devices for simultaneously positioning and assembling a plurality of radiating fins, thereby saving the assembly time and improving the assembly and manufacture efficiency.
Owner:MITAC COMP (SHUN DE) LTD

Aluminum product continuous punching mechanism

The invention discloses an aluminum product continuous punching mechanism and belongs to the field of sectional material machining equipment. Rotating roller brackets on the two sides of a space belowa material conveying bracket are rotationally connected with material guide rotating rollers; a plurality of punching brackets are arranged on a horizontal movement guide rod in a sliding manner in the horizontal direction; punching pressure rods are vertically and fixedly arranged at the middle parts of the lower sides of adjusting guide plates; a punching pressure plate is horizontally and fixedly arranged on the lower side of a lifting pressure plate; rotating pressure rods are correspondingly and vertically arranged at the parts, on the two sides of a space above the lifting pressure plate, on the material conveying bracket; pushing rod cams are arranged at the parts, on one sides of the rotating pressure rods, on the material conveying bracket; and the output end of a rotary electromagnet is in transmission connection with the pushing rod cam on one side of the material conveying bracket by a punching belt. The structural design is reasonable, aluminum products can be subjected to punching machining conveniently, rapidly, stably and efficiently in the conveying process according to the requirement, scratched marks on the surfaces of the aluminum products in the machining process can be avoided, the punching machining efficiency and the punching machining quality of the aluminum products are improved, and the machining and using requirements are met.
Owner:蔡燕

Threading device of sewing machine

A threading device of sewing machine is disclosed, wherein the upper thread extended from a thread supply mounted on a sewing machine body may be easily and smoothly guided into engagement with a thread holder simultaneously when the threading device is operated to pass the upper thread through the eye of needle attached to the lower end of needle bar, the thread holder being arranged between the thread supply and the needle. The threading device comprises a vertically movable needle bar 16 having a needle attached to the lower end thereof, the needle having a needle eye, a needle bar support 1 for supporting the needle bar 16 such that the same may be vertically movable, a thread holder 20 mounted to the lower end of the needle bar 16, a threading member A1 having a thread engaging portion 5 and a threading hook 4b, a threading shaft 2 for having the threading member A1 secured to the lower end thereof, an operating section C for vertically moving and axially rotating the threading shaft 2 to pass the upper thread n through the needle eye 17a, the threading member A1 being so formed as to provide the thread engaging portion 5 for guiding the upper thread to the needle eye 17a, the needle holder 20 being formed with a groove 20b for holding the upper thread n, the groove 20b having an opening 20a at which the upper thread n is guided into the groove 20b from the rear side of the thread holder 20 while the thread engaging portion 5 is moved down with the upper thread n which is to be passed through the needle eye 17a.
Owner:JANOME CORP

Lead frame jumper wire combination device

The invention provides a lead frame jumper wire combination device. The lead frame jumper wire combination device comprises a first conveying mechanism, a first turnover mechanism, a second conveying mechanism and a second turnover mechanism. The first conveying mechanism comprises a first storage mechanism and a conveying plate. The first turnover mechanism is arranged at the tail end of the moving direction of the conveying plate; the first turnover mechanism comprises a pair of rotating rods and is used for overturning the frame suckers on the conveying plate by 180 degrees; vent holes are formed in the bottoms of the frame suckers; vent pipes corresponding to the vent holes are arranged on the top surface of the rotating rod; the second conveying mechanism comprises a second storage mechanism and a vacuum pipe, and a pipe valve is arranged on one side of the jumper wire sucker; the vacuum pipe is provided with air suction holes corresponding to each layer of jumper wire suckers of the stack; a transfer plate is movably arranged at the outlet end of the second storage mechanism in the output direction, and the first turnover mechanism is located on one side of the middle section of the moving track of the transfer plate; and the second turnover mechanism is arranged at the tail end of the transfer plate in the moving direction and comprises a rotating block. The automation degree is high, and the production efficiency is greatly improved.
Owner:四川旭茂微科技有限公司

Control system and control method of safe hoisting of front hoist

The invention discloses a control system and a control method of safe hoisting of a front hoist. The system comprises an identification module, a measurement module, a safe hoisting module and an anti-tipping module, wherein the identification module is used for collecting images through a camera, identifying the images and judging whether the condition is a condition in which a container is unloaded from a train flatcar or not; the measurement module is used for measuring the length of a telescopic cylinder and the length of a pitching oil cylinder in real time through laser distance measurement sensors; four rotary locking type tension and pressure sensors on a hoisting appliance are used for measuring hoisting force of the container in real time; the safe hoisting module is used for judging a relative position between the container and a flatcar floor in the hoisting process according to collected data of the rotary locking type tension and pressure sensors; a hoisting speed and a hoisting direction of the hoisting appliance are controlled on the basis of data collected by the measurement module, so that a bottom corner part of the container can smoothly disengage from an F-TR lock on the flatcar, and the damage and the derailment of the flatcar are avoided; the anti-tipping module is used for considering the actual gravity center position of the container; compared with theexisting anti-tipping system of the front hoist, the anti-tipping module is more accurate and reliable.
Owner:TRANSPORTATION & ECONOMICS RES INST CHINA ACAD OF RAILWAY SCI CORP LTD
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