83results about How to "Avoid strong impact" patented technology

The invention discloses a simple heavy stuff carrying and feeding trolley and belongs to the field of carrying tools. The simple heavy stuff carrying and feeding trolley comprises a base, universal casters, a support, a feeding support, a sliding support, a supporting device, a manual winch, a pulley set and a hoisting hook, wherein the universal casters are arranged on the base, the support and the base are fixed into a whole, the feeding support is arranged on the top of the support, the sliding support is arranged inside the feeding support, the supporting device is arranged in the front of the feeding support, the manual winch is fixed to the back portion of the sliding support, and the pulley set and the hoisting hook are installed in the front of the sliding support. The pulley set comprises a fixed pulley and a movable pulley, a steel wire rope is led from the manual winch, sequentially winds around the fixed pulley and the movable pulley and then is fixed to the sliding support or a fixed pulley support; a fixed supporting plate is installed at the back of the base, and a movable supporting plate is installed in the front of the base. According to the simple heavy stuff carrying and feeding trolley, the functions of heavy stuff hoisting, transferring and machine tool feeding are achieved through a simple structure, and the labor intensity of workers is alleviated; meanwhile, the simple heavy stuff carrying and feeding trolley is simple in structure, convenient to operate, low in cost and high in safety and meets the use requirements of small and medium size enterprises.

The invention relates to a hot tapping blockage pressure balancing device of a fluid pipeline and a method of the hot tapping blockage pressure balancing device. The balancing device comprises a connection pipe fitting, a tapping machine, an auxiliary connection pipe fitting, an auxiliary tapping machine and a gas storage tank, wherein a cavity of the connection pipe fitting is a tapping connecting box; the tapping machine and a sandwich valve are arranged in the tapping connecting box; when the sandwich valve is closed, the tapping connecting box is divided into two parts by the sandwich valve; when the sandwich valve is opened, the two parts of the tapping connecting box communicate with each other to form a whole body; a cavity of the auxiliary connection pipe fitting is an auxiliary tapping connecting box; the auxiliary tapping machine and an auxiliary sandwich valve are arranged in the auxiliary tapping connecting box; when the auxiliary sandwich valve is closed, the auxiliary tapping connecting box is divided into two parts by the auxiliary sandwich valve; when the auxiliary sandwich valve is opened, the two parts of the auxiliary tapping connecting box communicate with each other to form a whole body; and the tapping connecting box and the auxiliary tapping connecting box are connected with the gas storage tank through pipes respectively. By the balancing device and the method for tapping a high-pressure gas delivery pipe, severe shock of high pressure in a high-pressure gas pipe to a perforating machine is avoided, so that production safety and safety of operators are ensured.

The invention discloses an automatic positioning device in lifting of a large arm of a spreader. The automatic positioning device comprises a main-arm hook and a large-arm hook transmission mechanism, wherein the large-arm hook transmission mechanism is connected with the large-arm hook, and drives the large-arm hook to locate and de-lock a large arm according to the lifting motion of the large arm. The spreader-large arm lifting automatic positioning device has the advantages of simple and compact structure, convenient assembling, safety and reliability, and convenient operation, and is capable of automatically positioning and de-locking the large arm. The invention also discloses a spreader provided with the automatic positioning device in lifting of the large arm of the spreader.

The present invention relates to a safety device for preventing a nailer from dry firing, wherein an elongated hole is formed on the magazine, the safety link is provided with a folded projection in response to the elongated hole, a safety nut is pivotally disposed in the elongated hole. The magazine is provided with an elastic element for keeping the safety nut flush with the edge of the elongated hole. After the last nail is shot (when no nails are loaded), the safety nut will be pushed out of the elongated hole by the drive plate so as to prevent the nailer from being fired. Thus, the user's strength and energy are saved, meanwhile, the service life of the nailer is prolonged.

The invention discloses a medicated bath capable of maintaining beauty and keeping young and a health care instrument with the function of traditional Chinese medicine fumigation. The medicated bath capable of maintaining beauty and keeping young and a health care instrument with the function of traditional Chinese medicine fumigation comprises a shell with an opened upper portion, and an inner shell with an opened upper portion. The inner shell is arranged in the interior of the shell in a sleeving mode. The bottom and the side wall of the inner shell are provided with multiple through holes such that the inner shell is in fluid connection with internal space of the shell. An interval of 8-15 cm is arranged between the side wall of the inner shell and the side wall of the shell such that the inner shell has space independently shaking relative to the shell. The side wall of the inner shell runs parallel to the side wall of the shell. An elastic first sealing ring is arranged between the side wall of the inner shell and the side wall of the shell and used for enclosing a gap between the side wall of the inner shell and the shell. In addition, the bottom of the inner shell is connected with the bottom of the shell by a liftable rotary shaft and used for supporting the inner shell. A first end of the rotary shaft is fixedly connected with the bottom of the shell. A second end of the rotary shaft is movably connected with the bottom of the inner shell by means of a fixing part in the manner of freely swinging the inner shell.

The invention discloses a simple heavy object carrier belonging to the field of carrying tools. The simple heavy object carrier comprises a base, universal trundles arranged on four bottom legs of the base, a bracket fixed together with the base to form a whole body, a sliding bracket which is arranged at the top of the bracket and is capable of sliding forwards and backwards on the bracket, a manual winch fixed to the rear part of the sliding bracket, a pulley block mounted on the front part of the sliding bracket and a lifting hook, wherein the pulley block comprises a fixed pulley and a movable pulley; a steel wire rope is led out of the manual winch, sequentially bypasses the fixed pulley and the movable pulley and then is fixed on the sliding bracket or a fixed pulley bracket; the lifting hook is connected with the movable pulley; a fixed support plate is mounted on the rear part of the base; a movable support plate is mounted on the front part of the base; and the movable support plate is articulated with the fixed support plate. By utilizing a simple structure, the double functions of lifting and transporting the heavy objects are realized; the labor intensity of workers is alleviated; meanwhile, the simple heavy object carrier is simple in structure, convenient to operate and low in cost; the use requirements of small and medium-sized enterprises can be met.

A disclosed protective film for a screen comprises a protective film body and a frame body, the protective film body is connected to the frame body, positioning assemblies are arranged at the four corners of the protective film body correspondingly, the four positioning assemblies are matched with the four corners of the protective film body correspondingly, the four positioning assemblies are arranged on the frame body correspondingly, and the four corners of the frame body are fixedly wrapped with clamping mechanisms correspondingly. According to the protective film for the screen, a dampinglayer, multiple buffer blocks and multiple buffer grooves are used for achieving a certain buffer effect on the film body, the edge of the film body is prevented from being damaged due to strong extrusion, the protective film does not need to be bonded to the display screen in the later period, installation is more convenient, meanwhile, the frame body can extrude the protective film, thus the connection between the protective film and the display screen is tighter, the protective film is prevented from loosening, the use effect of the protective film is ensured, and the protective film is more convenient to install.

The invention provides a two-side intake bladeless fan. The two-side intake bladeless fan comprises a shell (1), and a volute part (2) and an exhaust part (3) arranged in the shell (1); the exhaust part (3) is an annular structure form; the volute part (2) comprises a first intake port (21) formed in one side, and a second intake port (22) formed in the other side opposite to the side; and an exhaust port (31) is formed in the exhaust part (3). The two-side intake bladeless fan is higher in air volume output and air amplifying times and more uniform in exhausting, prevents powerful impact on persons by a conventional fan, enables the persons to feel comfortable through exhausting, is suitable for cooldown of old people and children, is tireless after long-time blowing, and is safe and reliable.

The invention discloses a water hammer-resistant constant-pressure pressure reducing valve, characterized in that the water hammer-resistant constant-pressure pressure reducing valve is provided with a valve body 1 and a valve body 2 connected with the valve body 1 as a whole. Valve cores are respectively arranged in the inner cavities of the two valve bodies; the valve 1 is a step cylinder with an inner step hole; a valve seat sleeve is screwed in the water inlet at the upstream end; cylinder barrels are respectively arranged in the inner holes at the upstream side and the middle section of the valve body 2; the inner holes at the downstream side are water outlets; the valve core is a sleeve drilled with blind holes at the centre; a piston with the larger diameter is arranged in the middle of the sleeve; a plunger is arranged on the downstream end; the upstream end is provided with a valve clack; the external circle of the sleeve glidingly coordinates with the centre hole corresponding to the valve body 1; the external circle of the middle piston glidingly coordinates with the cylinder barrel at the upstream side of the valve body 2; the outer diameter of the plunger at the downstream end of the sleeve coordinates with the inside diameter of the cylinder barrel at the middle section of the valve body 2 at interval; and a spring is arranged between the middle piston and the valve body 1. The pressure reducing valve does no have a pressure regulating structure, so the pressure reducing valve has simple structure and is maintained conveniently; meanwhile, a damping structure is arranged at the downstream side of the pressure reducing valve so as to effectively control the moving speed of the valve core and prevent the pressure reducing valve damaging when the water hammers occur.

The invention discloses a silicon wafer cleaning and drying integrated device, which comprises a movable frame. A control cabinet, a cylinder, a lifting device, an automatic cover plate and a cleaningtank are arranged in the movable frame. The lifting device is arranged in a box body, a bracket for placing a silicon wafer carrying basket is disposed on one side of the box body, and the lifting device comprises a driving motor, a screw rod, a connecting rod and a connecting sleeve. The driving motor is disposed at the bottom surface of the box body. The driving motor drives the screw rod to rotate through a gear. A limiting slot is arranged at the lower part of the screw rod. The limiting slot is internally provided with a limiting block matched with the limiting slot. The silicon wafer cleaning and drying integrated device can realize the continuous up-down movement of the silicon wafer to be cleaned in the cleaning tank, improve the cleaning quality and the cleaning efficiency of thesilicon wafer; and nitrogen is introduced into an inner tank through a bubbling mouth to increase the fluidity and the turbulence of the cleaning liquid in the inner tank, and to enhance the cleaningeffect and drying effect of the cleaning solution on the surface of the silicon wafer.

The invention discloses an automatic grinding device for dangerous article analysis. The automatic grinding device for dangerous article analysis solves the problem of grinding treatment of dangerousarticles. The automatic grinding device for dangerous article analysis is composed of a base (1), a grinding hammer drive device support (2), a grinding hammer drive device (3), an air cylinder hinge(4), an air cylinder (5), a grinding hammer (6), a grinding mortar (7), a grinding mortar drive device (8), a grinding mortar drive device base (9) and an air cylinder fixing hinge (10). The grindinghammer drive device support (2) is fixed to the base (1). The grinding hammer drive device (3) is connected with the grinding hammer drive device support (2) and the air cylinder hinge (4). The grinding hammer (6) is connected with an output shaft of the grinding hammer drive device (3). The grinding mortar drive device (8) is connected with the grinding mortar drive device base (9). The grindingmortar (7) is connected with the grinding mortar drive device (8). One end of the air cylinder (5) is connected with the air cylinder fixing hinge (10). One end of the air cylinder (5) is connected with the air cylinder hinge (4).

The invention relates to the field of chains, in particular to a variable-pitch large-load chain which comprises two symmetrically-arranged outer chain plates. Four inner chain plates are symmetrically and movably connected between the two outer chain plates; the four inner chain plates are divided into two sets, and each set is composed of two symmetrically-arranged inner chain plates; two limiting shafts are symmetrically and fixedly mounted on the outer side wall of each of the four inner chain plates; the ends, away from the correspondingly arranged inner chain plates, of the multiple limiting shafts are inserted into the outer chain plates arranged in a matched manner; two buffer mechanisms are symmetrically and movably mounted on each of the two outer chain plates; and the two ends,away from each other, of the four buffer mechanisms are inserted into the inner chain plates arranged in a matched manner; two pin shafts are rotationally installed between every two inner chain plates which are arranged in the same set; and the four pin shafts are each rotationally sleeved with a roller, and a center shaft is arranged in each of the four pin shafts. According to the variable-pitch large-load chain, the distance between the rollers can be adjusted, then the chain pitch can be changed, the chain can be connected to chain wheels of different specifications in a sleeving mode, and the application range of the chain is greatly widened.

The invention relates to a hammering tool. The hammering tool comprises a shell, a chuck, an impact mechanism and a driving mechanism, wherein the chuck is arranged at the front end of the shell and is used for accommodating a working head; the impact mechanism comprises an air cylinder arranged in the shell, a piston accommodated in the air cylinder, a rammer matched with the piston and an impact rod capable of transmitting the impact force of the rammer to the working head; and the driving mechanism is accommodated in the shell and used for driving the piston to reciprocate between a first position far away from the chuck and a second position close to the chuck in the axial length direction of the air cylinder. An air chamber is formed between the piston and the rammer, and the rammer can reciprocate between an initial position and a tail end position under the driving force of the air chamber so as to drive the rammer to hammer the working head. A pressure adjusting air hole communicating with the inside and the outside of the air cylinder is formed in the side wall of the air cylinder, the pressure adjusting air hole is formed between the second position of the piston and the initial position of the rammer, when the rammer reciprocates between the initial position and the tail end position, at least part of air in the air chamber is exhausted out of the air cylinder through the pressure adjusting air hole, and the structure is simple, rapid and convenient.

The invention discloses an electronic equipment screen protection unit. The electronic equipment screen protection unit comprises a first shell and a second shell, wherein the second shell is fixed in the first shell, the gap between the inner wall of the first shell and the outer wall of the second shell forms a first default zone, an air generator, a control switch, an acceleration sensor and an airbag are arranged in the first default zone, the air generator is connected with the airbag through an air pipe and also connected with the control switch, the control switch is connected with the acceleration sensor, and an upper end cover and a lower end cover are arranged in the first default zone. The unit is reasonable in design and can protect a screen when electronic equipment falls off so as to avoid breaking.