33results about How to "Avoid losing elasticity" patented technology

A female contact comprises a tube-shaped socket having a male-contact accommodation space, and a flat spring held in the socket so as to apply elastic force to a male contact. A notch is formed at a male-contact inlet of the socket. A hook formed at one end of the flat spring is engaged with the notch, so that the flat spring is latched at the male-contact inlet.

The invention discloses a preparation method of cationic waterborne polyurethane resin with high solid content. The preparation method comprises the following steps: adding polyester dihydric alcohol, micromolecular dihydric alcohol, polyhydric alcohols and bis-hydroxyl polyethylene oxide ether into a reactor to heat, and dehydrating in vacuum; introducing nitrogen gas to protect, and dropwise adding diisocyanate at 60-80 DEG C; cooling to 45-55 DEG C, and dropwise adding hydrophilic monomer after adding a catalyst; keeping the reaction temperature to 45-50 DEG C and stopping heating until the content of isocyanate is detected to reach a theoretical end point; regulating the viscosity by using acetone, neutralizing by using acetic acid at 40 degrees until the pH value is 6-7; adding deionized water and a chain extender to stir and disperse at a high speed, and removing acetone under reduced pressure to obtain the cationic waterborne polyurethane resin. While being used as a leather finishing agent, the cationic waterborne polyurethane resin shows relatively firm adhesion with leather due to positive charges; while woodware is coated with the cationic waterborne polyurethane resin, tannic acid is fixed by virtue of electric charge effects to prevent the tannic acid from migrating, so that a wood plate is flat and smooth, and has gloss and good sealing effects.

The present invention relates to compositions comprising banyan tree, lotus, and clover serum fractions. A method of improving the appearance of aging skin may comprise the step of applying a composition comprising an effective amount of banyan tree serum fraction, lotus serum fraction, and clover serum fraction to a sign of aging on a skin surface, wherein the composition is applied for a period of time sufficient to improve the appearance of the aging skin. The method may include the step of identifying a sign of aging on a facial skin surface.

The invention discloses a steel wire twisting prevention device, and belongs to the field of steel wire production equipment. The steel wire twisting prevention device comprises a twisting preventionmodule; the twisting prevention module comprises a fixed piece, a connecting rod, a limiting ring and an elastic piece; one end of the connecting rod is fixedly connected with the limiting ring, and the other end is rotationally connected with the fixed piece; one end of the elastic piece is connected with the fixed piece, and the other end is connected with the connecting rod; when steel wires are slightly twisted, the influence on winding by the steel wire twisting is eliminated; and when the steel wires are badly twisted, the steel wire protection is started, so that the steel wires are difficultly broken in the winding process.

The invention discloses a pipe bending machine in the field of mechanical manufacturing. The pipe bending machine comprises a work table, a feeding mechanism, a pressing mechanism and a pipe bending mechanism, wherein the feeding mechanism is arranged on the work table, the pressing mechanism is used for pressing a pipe material, and the pipe bending mechanism is used for bending the pipe material; the pipe bending mechanism comprises a core rod sleeved with the pipe material on the work table, and further comprises a rotating device driving the pipe material to bend, one end of the core rod is connected with the feeding mechanism, the other end of the core rod is provided with a bent pipe head capable of being bent, the bent pipe head comprises a plurality of bent pipe pieces which are connected with one another, and the center of the bent pipe pieces are provided with openings; the outer sides of the openings of the bent pipe pieces are provided with arc-shaped grooves, and an elastic member and a limiting member used for limiting the expansion and contraction of the elastic member are arranged between every adjacent two bent pipe pieces; the elastic members comprise arc-shaped plates matched with the arc-shaped grooves, the arc-shaped plates are provided with a plurality of telescopic springs, one end of each telescopic spring is connected to the arc-shaped plate of one of the bent pipe pieces, and the other end of the corresponding telescopic spring is connected to the arc-shaped plate of the adjacent bent pipe piece. The pipe bending machine has the advantages that theuse is convenient and the pipe bending quality is improved.

The invention relates to the technical field of shock absorber equipment, and discloses a damping type shock absorber device capable of preventing elasticity from disappearing, which comprises a shell. A first connecting shaft is movably connected to the interior of the shell; a first piston is movably connected to the top end of the first connecting shaft; an air spring is movably connected to the bottom surface of the first piston; the bottom end of the air spring is movably connected with a second piston; and the bottom end of the second piston is rotatably connected with a first connecting rod. According to the damping type shock absorber device capable of preventing elasticity from disappearing, through connection of the shell and the first shell, the problem that shock absorber equipment in the prior art is simple is solved; by means of air pressure, during actual use, the situation that the spring loses elasticity due to long-time use is avoided, the service life of the shock absorber is prolonged, and the practicability of the shock absorber is improved; and adjustment is carried out according to the actual vibration condition, so that the advantages of reducing the air pressure cost and improving the reliability of the shock absorber are achieved.

Disclosed is a three-dimensional warp knitted fabric which is excellent in pressure resistance and prevents slippage of ground knitting structures without impairing fabric softness and the like. In particular, the three-dimensional warp knitted fabric (1) comprises front surface and rear surface knitting structures and connecting yarns (4) connecting the front and rear surface weaving structures to each other, wherein interlining is arranged between the connecting yarns (4). The yarn (5), the interlining yarn (5) is woven along the inner side of the back surface weaving structure (3) and fixed. The inlay yarns are woven with the bundled yarns and locked to the weave weave of the back surface. Therefore, the bending of the connecting yarns that occurs when the three-dimensional warp knitted fabric is compressed can be minimized, and not only the reduction of restoring force against entanglement of the bent connecting yarns but also the inclination of the connecting yarns can be prevented. Therefore, for the three-dimensional warp knitted fabric, even if force is applied to the course direction or the wale direction according to the insertion direction of the insertion yarn, slippage of the knitting structure in the course direction or the wale direction can be effectively avoided.

The invention discloses an electric meter box for large-scale high-voltage power transmission equipment. The box comprises a box body, a partition plate is fixedly mounted in the box body; a first groove penetrates through the interior of the partition plate; a wire inlet hole is formed in one side of the partition plate; a wire arranging plate is fixedly installed between the partition plate andthe wire inlet hole, fixing plates are fixedly installed on the other side of the partition plate, an upper positioning plate is movably installed between every two adjacent fixing plates, a lower positioning plate is fixedly installed below each upper positioning plate, and an electric meter box is movably installed between each upper positioning plate and the corresponding lower positioning plate. By arranging a series of structures, a user can tidy wires conveniently in the using process of the device, compared with previous perforated wire tidying, operation is more convenient, limitationof the thickness of wire holes is avoided, the electric meter box can be fixed conveniently, later maintenance and replacement of the electric meter box are facilitated, and meter reading of the usercan be facilitated.

The invention discloses a refueling gun for oil and gas recovery. The technical solution includes a refueling gun body, a refueling gun barrel connected with the refueling gun body, and a refueling gun frame. The refueling gun body is provided with a refueling cavity adapted to the refueling gun barrel The oil-gas separation valve assembly and the ejector valve core are arranged in the refueling cavity, the self-sealing valve assembly matched with the ejector valve core is arranged in the refueling cavity, and the self-sealing valve assembly includes a matching self-sealing valve body and The valve body cover plate, the self-sealing valve body is provided with a matching elastic component inside, and the lower side of the valve body cover plate is provided with a diaphragm structure and a rolling pin component. The upper top plate and the lower top plate of the end of the self-sealing valve body are provided with an adjustment structure adapted to the upper top plate. The invention has the effects of simple structure, convenient use, adjustable and good refueling reliability.

The invention relates to the technical field of threaded pipe production equipment, and discloses an effectively-fixed threaded pipe heating production device. The effectively-fixed threaded pipe heating production device comprises a heating device, wherein a pipeline is movably connected to the outer side of the heating device; a threaded feeding device is rotationally connected to the outer sideof the pipeline; a shell is arranged on the outer side of the threaded feeding device; a suction cup is arranged on the outer side of the heating device; a connecting pipe is arranged on the outer side of the suction cup; a first piston is slidably connected to the interior of the connecting pipe; and a first air bag is fixedly connected to the outer side of the connecting pipe. According to theeffectively-fixed threaded pipe heating production device, through connection of the heating device and the connecting pipe, the problem that threaded pipe production equipment in the prior art is simple is solved, the situation that the elasticity of an adjusting device disappears during threaded pipe production is avoided, heat dissipation can be rapidly conducted by means of the characteristicsof magnetic fluid, the heating production device is prevented from producing unqualified products in the using process, and the advantage of improving the product quality is achieved.

The invention provides a floating sealing connector. The floating sealing connector comprises an outer shell and an inner shell that is connected in the outer shell in a floating connecting manner; the floating sealing connector also comprises a sealing rubber sleeve for sealing and blocking a floating gap between the inner shell and the outer shell; the inner edge of the sealing rubber sleeve is in sealing connection with the inner shell; an outer shell connecting surface used for being connected with the sealing rubber sleeve is arranged on the outer shell; the outer edge of the sealing rubber sleeve is connected with the outer shell connecting surface through an outer edge connecting part and an outer annular pressing plate; and an outer limiting structure used for limiting the compression deformation mount of a sealing rubber mat and extending towards the outer shell connecting surface is arranged on the outer edge or the inner edge of the outer annular pressing plate. According to the floating sealing connector, the sealing rubber sleeve and the inner shell and the outer shell are connected with relatively high connection strength and a relatively better sealing effect.

The invention discloses a portable socket for portable installation, comprising a plug, a transparent cover, a hoisting mechanical system, a socket shell and a movable outlet, wherein the socket shelland the transparent cover are nested with each other, the plug is installed inside the transparent cover, and the movable outlet is provided at the end of the socket shell opposite to the transparentcover. The portable socket is provided with a retraction mechanism, a push structure and a start linkage structure. By pressing an inverted T fixing rod to start the start linkage structure, on the one hand, a blocking drive structure is urged to drive, a blocking structure is rotated, the retraction mechanism is allowed to rotate smoothly, and the length of a wire of the plug is adjusted; and onthe other hand, the push structure is also driven to push the socket out from the movable outlet, when the portable socket is not used, the transparent cover covers the plug, and the socket is retracted and placed in the socket shell to avoid short circuit on next use caused by accumulation of dust due to long-term non-use.

The invention belongs to the technical field of engineering construction and specifically discloses a grouting pipe bit for road construction. The grouting pipe bit comprises a drill bit main body, wherein a first chamber is formed in the drill bit main body; a high-pressure runner which is connected with the first chamber is formed on the drill bit main body; a high-pressure nozzle is arranged inthe high-pressure runner; a drill tip is arranged on the lower part of the drill bit main body; a second chamber is formed in the drill bit; the first chamber is connected with the second chamber; anauxiliary grouting hole which is connected with the second chamber is formed on the drill tip; a hydraulic control cut-off unit and a grout backflow unit are arranged in the second chamber. The grouting pipe bit with such a structure is capable of solving the problem of pipeline blocking caused by the stagnation and solidification of residual grout in the channel during high / low pressure conversion process.

The invention provides a sole structure and relates to the field of shoes. The sole structure includes a sole body, a hollow cylinder is installed at the heel inside the sole body, and a hollow block is installed at the toe inside the sole body, and the hollow block communicates with the hollow cylinder through a conduit The top of the sole body is provided with an opening and a pressing surface is provided at the opening, and an air bag is provided between the bottom of the pressing surface and the top of the hollow block. Compared with the prior art, the present invention sets the airbag structure inside the sole, and through the cooperation of the piston inside the hollow cylinder and the reset assembly, during the walking process, the sole of the foot presses the gas in the airbag to make the gas enter the hollow cylinder Inside the body, when the foot is lifted, the reset component makes the air re-enter the inside of the airbag, and at the same time forms a rising air column inside the airbag to massage the soles of the person's feet and achieve the effect of ventilation at the same time.

The invention relates to the technical field of shock absorber equipment, and discloses a damping shock absorber device for avoiding elastic disappearance, which includes a casing, the inside of the casing is movably connected with a first connecting shaft, and the top end of the first connecting shaft A first piston is movably connected, an air spring is movably connected to the bottom surface of the first piston, a second piston is movably connected to the bottom end of the air spring, and a first connecting rod is rotatably connected to the bottom end of the second piston. The damping shock absorber device that avoids the disappearance of elasticity solves the simple problem of the shock absorber device in the prior art through the connection of the shell and the first housing, and uses air pressure to avoid the spring due to the use time of the spring during actual use. If it is too long, it will lose its elasticity, prolong the service life of the shock absorber, increase the practicability of the shock absorber, adjust according to the actual vibration situation, and realize the advantages of reducing the air pressure cost and increasing the reliability of the shock absorber.

The invention belongs to the technical field of radio frequency systems, and in particular relates to a method for dynamic connection of radio frequency equipment. The method includes the following steps: (1) performing surface treatment on the radio frequency equipment workpiece and the reed before electroplating; (2) affixing and fixedly connecting the radio frequency equipment workpiece and the reed; The surface of the reed is treated before electroplating; (4) The workpiece of the radio frequency equipment and the reed that are fixedly connected together are electroplated with silver as a whole. The method enables the dynamic connection of the radio frequency equipment and the long-term, stable and reliable connection of the radio frequency power.