31results about How to "Slow rebound" patented technology

The invention discloses a high-efficiency wood cutting device for furniture production with noise reduction function, which comprises a cutting table, a shock absorbing device, a cutting motor, a cutting wheel, a first screw rod, a guide column, a second screw rod and a fixing fixture. A shock absorbing device is installed on the lower side of the cutting table, and a cutting motor is fixedly installed on the front side of the cutting table. The output shaft of the cutting motor penetrates into the inside of the cutting table and is connected with a cutting wheel. block, and the lifting block is also slidably installed on the guide column through the slide hole, and a fixing fixture is installed on the lower side of the screw sleeve and the sliding sleeve. The wood cutting device can perform stable cutting after clamping the wood, and at the same time can meet the cutting work of wood with different thicknesses and widths, and has a higher safety factor than the existing cutting device, avoiding the contact of the hand with the cutting wheel. At the same time, it can reduce the noise generated during the cutting process, which is safe and reliable.

The invention discloses a slow-rebounding hydraulic limit buffer device for an elevator. The slow-rebounding hydraulic limit buffer device comprises bases and a cylinder body, wherein the number of the bases is two, and a gap between the bases forms a guide groove; a lower cover is arranged below the bases; the cylinder body is fixedly arranged at the upper end of the lower cover; the upper end of the cylinder body is open, and an upper cover is detachably arranged at the upper end of the cylinder body; a horizontally-arranged colliding seat is arranged above the cylinder body; an outer buffer pad is arranged at the upper end of the colliding seat; a piston rod is arranged at the lower end of the colliding seat, sequentially penetrates through the upper cover and the lower cover, extends to the inner part of the guide groove, and is connected with a stop block in the guide groove; an upper buffer spring is arranged between the colliding seat and the upper cover. The slow-rebounding hydraulic limit buffer device disclosed by the invention is reasonable in structural design; by triple effects of the upper buffer spring, a lower buffer spring and hydraulic oil in the cylinder body, limit buffer within reasonable time and motion distance is realized; meanwhile, the rebounding can be effectively slowed down during rebounding, so that possible secondary injury to passengers due to quick release of elastic potential energy is avoided.

A small unmanned plane undercarriage buffer relates to the field of aviation aircrafts and solves problems of low buffering efficiency, easy bounce, low reliability of a present flat spring type buffer. The small unmanned plane undercarriage buffer comprises an external cylinder, a first spring on the external cylinder, an internal cylinder having a damping hole, an air sac between the external cylinder and the internal cylinder; an upper joint, a lower joint, a piston rod extending into the internal cylinder, a piston, a damping plate, a pressure-limiting valve, a check valve, a guide sleeve and a locking cover, wherein the piston rod is orderly covered with the piston, the damping plate and the pressure-limiting plate; the piston rod is orderly covered with the check valve, the guide sleeve and the locking cover; the check valve, the guide sleeve and the locking cover are all disposed in the external cylinder; an internal-external cylinder annular oil storage cavity is formed between the internal cylinder and the external cylinder; the damping plate axially moves along the piston rod; the pressure-limiting plate limits maximum damping force to a preset valve during compression stroke; after the locking cover is tightly screwed, the guide sleeve, the check valve and the internal cylinder are axially pressed to the lower joint; the check valve controls communication between the internal-external cylinder annular oil storage cavity and a right cavity of the internal cylinder; and two ends of a first spring are respectively pressed against the upper and lower joints. The small unmanned plane undercarriage buffer possesses high buffering efficiency, uneasy bounce, stable performance and great reliability.

The invention discloses a polyurethane resin used for slow-recovery sponge, and a preparation method and an application thereof. The resin comprises a resin A component, a resin B1 component and a resin B2 component, and the resin A component comprises polyol A, a cross-linking agent, a catalyst, a foaming agent and a foam stabilizer; the resin B1 comprises 100 parts of isocyanate B1, 10-40 parts of polyol B1 and 0.002-0.010 parts of a side reaction inhibitor, the resin B2 comprises 100 parts of isocyanate B2, 50-100 parts of polyol B2 and 0.002-0.010 parts of the side reaction inhibitor, the isocyanate B1 is methyl diphenylene diisocyanate, carbodiimide modified methyl diphenylene diisocyanate, toluene diisocyanate or diisocyanatonaphthalene, the polyol B1 is polyether triol, the isocyanate B2 is methyl diphenylene diisocyanate, carbodiimide modified methyl diphenylene diisocyanate, toluene diisocyanate or diisocyanatonaphthalene, and the polyol B2 is polyether polyol. Slow-recovery polyurethane sponge with different hardness values can be produced, and the cost is low.

The invention belongs to ass milker. The ass milker mainly comprises two milking cups, branch pipelines, a main pipeline and a milk tank, wherein the upper ends of the milking cups are coniform; 2-3 protruding sealing rings are arranged to be sleeved at the roots of breasts; two ring-shaped bodies are arranged below the sealing rings to be in contact with different positions of the breasts to perform sealing functions. The simulated function meets the physiological requirements for milk secretion and ejection of an ass; each of the two milking cups is 20-30 mm in diameter and 50 mm in length; the pulsation frequency is 80-90/min; the pressure range of a vacuum gauge is 0.03-0.04 Mpa. The milking cups made of silica gel have excellent resilience and are transparent, so that the positions of the breasts can be seen in the milking process, and accordingly, the operation is convenient.

The invention discloses a washable slow-rebound polyurethane foam. The washable slow-rebound polyurethane foam is produced from polyether polyol, isocyanate, a stabilizer and a catalyst according to a weight ratio of 100:(40-50):(0.3-0.8):(0.3-0.5). The invention also discloses a production method and an application of the washable slow-rebound polyurethane foam. The washable slow-rebound polyurethane foam has the characteristics of good air permeability, slow rebounding speed, and realization dehydration quick-drying after being washed.

The invention discloses a damping device. The damping device comprises a stressing frame, a bearing rod, a first damper, a second damper, a folding rod, a bearing part and a bearing arm, wherein one end of the bearing rod is hinged to the stressing frame; the other end of the bearing rod is hinged to the first end of the first damper; the second end of the first damper is hinged to the stressing frame; an obtuse angle is formed between the bearing rod and the first damper; one end of the folding rod is hinged to the bearing rod or the first damper; the other end of the folding rod is connected with the second damper; one end of the second damper is connected with the stressing frame, and the other end of the second damper is connected with the folding rod; the middle part of the folding rod is connected with the bearing part; the bearing arm is arranged at one side, away from the stressing frame, of the first damper; one end of the receiving arm is fixed on the stressing frame, and the other end of the receiving arm is fixed in the middle of the folding rod. According to the damping device disclosed by the invention, the stress from one part of the stressing frame in the longitudinal direction is transferred to the transverse direction of the stressing frame, so that a maximum bearing force of the damping device is improved, and the device is favorably arranged to control a transverse stress; meanwhile, the longitudinal damping amplitude of the damping device is reduced.

The invention belongs to a milking apparatus for mare's milk. The milking apparatus is mainly composed of two milking cups, branch pipes, a main pipe and a milk container. The upper ends of the two milking cups are made into cone shapes, two to three protruding sealing rings are arranged at the upper ends of the milking cups and sleeved at roots of breasts, and two annular elements arranged under the sealing rings are contacted with identical positions under nipples for sealing respectively. Physiological needs of lactation and milk ejection of horses are met by means of the profiling function. The diameters of the two milking cups are in a range of 20mm to 30mm, and the lengths of the two milking cups are in a range of 0.04MPa to 0.05MPa. The milking cups which are made of silica gel are good in resilience and transparent, nipple placing positions can be seen in a milking process, and the operation is convenient.

The invention discloses a landing buffering device for an unmanned aerial vehicle. The landing buffering device for the unmanned aerial vehicle comprises an unmanned aerial vehicle body, a frame and auxiliary buffering mechanisms, wherein the frame is fixedly arranged on the lower end surface of the unmanned aerial vehicle body; the auxiliary buffering mechanisms are arranged on one side of the frame; a carbon fiber pipe is fixedly arranged on the lower end surface of the frame; a first spring sleeves the carbon fiber pipe; an exhaust port is formed in one side of the bottom of an air cylinder; a mounting plate is fixedly arranged at the lower end of the air cylinder, and is connected with an undercarriage at the lower end through two crash boxes symmetrically arranged; the undercarriage is of an airbag structure; a cycle valve is fixedly arranged on one side of the undercarriage; three spring mounting seats are arranged on the undercarriage between the crash boxes; and second springs sleeve the spring mounting seats. The landing buffering device is simple and reasonable in structural design; and crash energy is consumed step by step when the unmanned aerial vehicle lands through a multi-stage damping component, the damping process is more stable, the buffering effect is good, the resilience is slow, the secondary damage is avoided, and the condition that the unmanned aerial vehicle sinks into rivers and lakes at failure can be avoided.

The invention belongs to camel milking equipment. A camel milker mainly comprises milking cups, a branch pipe, a main pipe, a milk pot, a pulsator and a vacuum device, wherein the vacuum device consists of a vacuum conduit, a vacuum switch, a vacuum instrument, a vacuum adjuster, a vacuum port and a vacuum pump; the vacuum device is of a device for providing stable vacuum degree so as to generate suction action for milking work. The camel milker comprises two large milking cups and two small milking cups, wherein the diameter of each of the two large milking cups is 20-30mm, and the diameter of each of the two small milking cups is 10-20mm, and the length of the four milking cups does not exceeds 40mm; and the milking cups are made of silicon gel, have good resilience, and are transparent, thus being capable of seeing the position at which the nipple is placed in milking process, and being convenient to operate.

The invention provides a high-temperature blast hole cooling method. The high-temperature blast hole cooling method comprises the following steps that (1) water and cement grout are injected into an injection machine which is provided with a water spraying rod and a grout spraying rod; (2) the injection machine is installed at a blast hole position, the water spraying rod and the grout spraying rod are made to stretch into a blast hole and be aligned with the center of the blast hole position; (3) the water spraying rod descends, and a water spraying nozzle is used for spraying water on the wall of the blast hole; (4) the water spraying rod ascends, the grout spraying rod descends at the same time, a grout spraying nozzle of the grout spraying rod begins to spray the cement grout in the lower direction and the horizontal direction at the same time when the grout spraying rod descends to the bottom of the blast hole, then the grout spraying rod ascends, and the grout spraying nozzle conducts grout spraying process continuously in the ascending process of the grout spraying rod and stops spraying grout when ascending to the opening of the blast hole; (5) after the grout in the blast hole is solidified, water is injected into the blast hole for cooling. By means of the high-temperature blast hole cooling method, the safety and the operation scale of blasting operation in a high-temperature burning area can be improved, safety is high, water resources are saved, and very high application and popularization value is achieved.

The invention relates to a die cutting device for conductive cloth indentation lines. The die cutting device is used for carrying out die cutting on indentation lines on a conductive cloth material strip, and comprises an upper die base and a lower die base which is arranged below the upper die base and matched with the upper die base. The lower surface of the upper die base is provided with an indentation line cutter, and the lower die base is provided with a silicone pad matched with the indentation line cutter and a material blocking mechanism matched with the conductive cloth material strip. Compared with the prior art, through arranging the silicone pad on the lower die base, the conductive cloth material strip and the indentation line cutter are supported flexibly from below, the indentation line cutter is ensured to be capable of being pressed into the conductive cloth material strip completely, so that the depth of the indentation lines is obvious, the compactness is good, therebound speed is slow, the imprint is not prone to recede and disappear, the retention is good, and the conductive cloth material strip can be effectively prevented from being lifted by the indentation line die cutter, thereby ensuring the normal proceeding of the continuous die cutting process.

The invention discloses a blind sidewalk water supplementing floor tile which comprises a tile body, a supporting plate is fixed in the tile body through a reset spring, multiple sets of protruding mechanisms are arranged on the upper portion of the supporting plate, multiple water inlet grooves are formed in the upper end of the tile body in a penetrating mode, and multiple water falling holes are formed in the upper end of the supporting plate in a penetrating mode. A drainage hole is formed in the side wall of the brick body, two rotating plates are rotatably connected to the inner bottom of the brick body through torsional springs, the two rotating plates are jointly connected with a pressing belt, and a pressing rod is slidably connected to the upper end of the brick body in a penetrating mode. The blind sidewalk water supplementing floor tile has the advantages that the retractable sliding sleeve is arranged so that the blind cannot be located on an uneven road all the time when walking, the fatigue of the sole of the blind can be effectively relieved, the rebound speed of the sliding sleeve is low due to the arrangement of the memory sponge, great influence cannot be caused when the blind walks in situ, and the blind can walk more comfortably; and the weak resilience force does not impact the sole of the blind person, so that the blind person can stand more comfortably.

The invention discloses sponge for a body armor and a preparation method of the sponge. The sponge comprises the following components in parts by weight: 25-40 parts of polyether polyol, 15-25 parts of polymer polyol, 40-50 parts of slow rebound polyether, 15-25 parts of TDI, 1.5-4 parts of a catalyst, 2-4 parts of auxiliary agents, 0.5-1 part of silicone oil and 0.4-0.7 parts of water, wherein the auxiliary agents comprise a tension agent and a toughening agent. The method comprises the following steps: proportionally mixing polyether polyol, polymer polyol, slow rebound polyether, a catalyst, auxiliary agents, silicone oil and water, stirring for 10-20 seconds at the rotating speed of 50000 r/min, carrying out high-pressure atomization injection on TDI, stirring for 10 seconds at a highspeed to uniformly mix the raw materials, and carrying out reaction foaming to obtain the sponge for a body armor. The bulletproof sponge provided by the invention has very high density, tensile strength and tearing strength, the pore diameter of the sponge is compact and fine, resilience is slow, strong instantaneous impact force can be resisted, the bulletproof sponge has an excellent buffer effect, and when the bulletproof sponge is used as a buffer layer of a body armor, blunt damage to the body armor is used can be greatly reduced.

The invention provides a magnetic therapy temperature-adjusting mattress with a negative ion circulation function. The mattress is integrally cuboid and comprises a surface layer, a supporting layer and a bottom layer which are sequentially arranged from top to bottom, wherein the surface layer is provided with an elastic bandage and is fixedly connected with the supporting layer through the elastic bandage; the surface layer is formed by sewing multiple layers of fabrics, through holes are formed in sewing line intersection points of the multiple layers of fabrics, gas exchange columns are arranged at the through holes, and each gas exchange column is composed of a gas supply component and a gas extraction component; the supporting layer is provided with a magnet and an air guide pipe channel and connected with the bottom layer through a clamping groove; and the bottom layer is composed of a shell, a supporting frame and a gas purification device, and an air purification filter element and a negative ion filter element are arranged in the gas purification device. The mattress has the beneficial effects that the mattress has a negative ion release function, can realize the circulation of negative ions through a circulation system, also has the functions of magnet therapy, temperature regulation and slow release of fragrance, can obviously improve the sleep quality, and has a wide market prospect.