58results about How to "Avoid direct harm" patented technology

The invention discloses an auxiliary support chair device which comprises a bracket, a sitting plate, a backrest, armrests and support rods, wherein a back clamping structure is arranged on the backrest; and an emergent device which is capable of keeping the chair working normally if the support rods are failed is arranged on a transmission structure. Therefore, the device has the beneficial effects that (1) the device is safe and reliable, and direct damage caused if the support rods are exploded can be avoided; (2) balance can be maintained when the device is used; (3) due to adoption of theemergent device, emergent measures can be taken if the support rods are failed; and (4) the device is comfortable to use, and human bodies can be prevented from damage caused by too concentrated stress of hips.

The invention provides an automatic cutting device for a non-woven fabric tube bank. The device comprises a positioning cutting platform, a cutting device, a drawing extension and retraction device and a pushing device, wherein the cutting device consists of a thermoelectric cutter, a lifting oil cylinder, an induced draft fan, an air duct and a cleaning plate; guide wheels are arranged at the two ends of the thermoelectric cutter, and perpendicularly roll in guide wheel grooves; the temperature of the cutter can be regulated between 280 to 500 DEG C; the thermoelectric cutter is driven by the lifting oil cylinder to cut the non-woven fabric tube bank; burrs at a notch of the non-woven fabric tube bank are molten to produce a small amount of smoke, and the smoke enters the air duct, and is sucked by the induced draft fan to be exhausted outdoors; molten polyester fibers are adhered to a blade of the thermoelectric cutter, and are cleaned by the cleaning plate; the drawing extension and retraction device is regulated, the non-woven fabric tube bank moves on the positioning cutting platform, and is cut by the cutter when reaching a laser positioner, the cutter ascends, and meanwhile, an electromagnet is pushed and pulled to be energized for suction, and the cut tube bank is pushed out of the cutting platform by a pushing plate.

The invention discloses a preparation method of ZnS / ZnSe composite infrared transmission material, wherein ZnS is deposited on a ZnSe substrate in a chemical vapor deposition furnace provided with a vacuum heating system by adopting a chemical vapor deposition method. The preparation method is characterized by comprising the following steps: directly and respectively heating in the deposition furnace to sublimate and generate Zn vapor and S vapor, carrying out gaseous phase reaction in a deposition chamber to deposit ZnS, carrying out surface treatments of polishing, thermal treatment and plasma cleaning on the ZnSe substrate; putting the treated ZnSe substrate onto a growth mould, then putting the growth mould on a definitive position at the upper half part of the deposition chamber, andcarrying out the deposition; respectively controlling the temperature and the pressure of the deposition chamber of 560-700 DEG C and 300-720Pa, controlling the temperature of a zinc crucible in the deposition period of 500 DEG C and the temperature of a sulfur crucible of 300 DEG C, using hydrogen and argon as carrier gases, arranging a circular hole at the ZnSe substrate from the rear part of the mould so as to take the product out completely and rapidly. By adopting the method, a layer of CVDZnS product with the thickness more than 1mm is deposited on ZnSe, the light transmission waveband of the product is 0.4-12Mum, and the product is firm to be combined and has wide application prospects.

The invention discloses a three-shaft remote-controlled drill pipe vehicle for a coal mine. The three-shaft remote-controlled drill pipe vehicle for the coal mine comprises a crawler base plate arranged at the bottom and used for supporting, an automatic drill pipe box fixed on the upper portion of the crawler base plate, a pump power system for providing power and a control module. The pump powersystem outputs high pressure oil to power the crawler base plate and the automatic drill pipe box. The automatic drill pipe box includes a mechanical arm with a manipulator, a drill pipe box used forplacing a drill pipe and with drive mechanisms transversely arranged on both sides and sliding mechanisms arranged on both sides of the drill pipe box and with vertical sliding rails. The control module realizes the signal control of the automatic drill pipe box, the crawler base plate and the pump power system. According to the three-shaft remote-controlled drill pipe vehicle for the coal mine,workers are free from poor construction sites or away from first construction sites, direct injury to the workers in emergency situations is avoided, at the same time, the labor intensity is reduced,the work performance is stable, the operation is simple, and the three-shaft remote-controlled drill pipe vehicle for the coal mine is suitable for promotion in the industry.

A method for preventing stiff seedlings at the rooting stage of ridge-planted plastic-filmed tobacco. Ridges are formed in the tobacco field. The film-covering width on the ridge surface is 60-70 cm, the vertical height between the ridge top and the furrow is 25-30 cm, and the width of the ridge bottom is 35-30 cm. 50 centimeters, the top surface of the ridge is an arc surface, and the side of the ridge is a slope, the surface of the ridge is covered with a film, and vertical planting holes are punched on the arc surface of the top surface of the ridge, and the tobacco seedlings are moved into the vertical planting holes. The method includes Tobacco seedlings are drilled on one or both sides of the ridge after 5-10 days in the vertical planting hole; the diameter of the slant hole is 2-3 cm, the depth of the hole is 25-30 cm, and the angle between the slant hole and the positive projection surface of the top surface of the ridge is 44°-48°, the vertical distance between the opening of the inclined hole and the top surface of the ridge is 3-8 cm, and the vertical distance between the bottom opening and the top surface of the ridge is 15-20 cm; 0.002‑0.004%. The invention has the advantage that it can effectively reduce the occurrence rate of stiff seedlings in the rooting stage.

The invention discloses an emergency stop control method for a robot. The emergency stop control method comprises the steps that when an emergency stop switch is pressed, a safety emergency stop boardreceives an emergency stop signal and sends the emergency stop signal to a drive and control integrated machine core, and timing is started; the drive and control integrated machine core calculates emergency stop impact force time and deceleration speed parameters, and deceleration is started; and when deceleration is completed or the time is up, the drive and control integrated machine core disconnects a servo main power supply signal of the safety emergency stop board, and the safety emergency stop board cuts off a servo main power supply of the drive and control integrated machine core. The invention also discloses an emergency stop control system for the robot. The system comprises the emergency stop switch, the safety emergency stop board, the drive and control integrated machine core, a contactor and the main power supply which are connected in sequence. Deceleration and stopping are carried out at the highest speed under the condition that the service life of a body speed reducer and arms is not shortened, so that the safety of the robot during emergency stop is improved, and it is guaranteed that the body speed reducer and the movement arms are not damaged during emergencystop of the robot.