82results about How to "Achieve the purpose of slowing down" patented technology

The invention discloses a hydraulic resistance type tall building escape device, comprising a revolving axle, a damping rotor sheathed on the revolving axle and a winding reel sheathed on the damping rotor; wherein the two ends of the damping rotor and the two ends of the winding reel are all fixedly connected with a cover plate by virtue of bolts, the winding reel is wound with a steel wire rope used for escaping, the two ends of the winding reel and corresponding position on the cover plate are provided with a winding hole used for tying the steel wire rope, the cover plate is sheathed on the revolving axle by virtue of an axle sleeve and a rolling bearing contained in the axle sleeve, the cover plate is fixedly connected with an end cover by virtue of bolts, the revolving axle is provided with a seal ring used for sealing the revolving axle, the axle sleeve and the damping rotor, the two ends of the revolving axle are fixedly connected with a hook, and a hermitical space formed by the revolving axle, the damping rotor, the winding reel and the seal ring is injected with viscous liquid. The invention has compact structure, novel and reasonable design, operation convenience, high stability, durability and reliability, good cyclic utilization performance, low cost and strong practicability and is beneficial to popularization and application.

The invention relates to a method and a device for limiting the speed of a car. The method comprises the following steps: acquiring the real-time running speed; judging whether the real-time running speed is higher than the preset maximum running speed of the car or not; when the real-time running speed is higher than the preset maximum running speed of the car, sending a speed limiting signal to a restrictor to instruct the restrictor to reduce the air inflow of an engine cylinder of the car. When the running speed of the car exceeds the preset maximum running speed, the speed of the car can be slowed down to the preset speed automatically, so that the car running safety is ensured, and the problem of overspeed running of the car is solved.

The invention discloses an automatic escaping and help seeking system of a bus. The system comprises a spraying device, a glass lifting mechanism, a control circuit, a GPS (Global Positioning System) module, a power supply module, a temperature sensor, a smog sensor, a flame sensor and a wading module, wherein the spraying device is arranged at the top of a vehicle; the glass lifting mechanism is arranged on a window of the vehicle; the control circuit, the GPS module, the power supply module are arranged in a vehicle body; the temperature sensor, the smog sensor, the flame sensor and the wading module are arranged in the vehicle in a dispersing way; the power end of the power supply module is connected with the power end of the control circuit and is used for directly or indirectly providing a working power supply to other mechanisms; the input end of the control circuit is respectively connected with the output ends of the temperature sensor, the smog sensor, the flame sensor, the wading module and the GPS module; and the output end of the control circuit is respectively connected with the controlled ends of the spraying device and the glass lifting mechanism. When a fire disaster occurs in the vehicle, even under the condition that the vehicle turns on one side or turns over, the system can be used for timely extinguishing fire, opening window glass and sending a signal for help, a reliable safeguard for safe bus taking is provided for passengers.

The invention discloses a control device capable of preventing elevator deceleration. The control device comprises an elevator shaft; a car is movably connected to the surface of the inner wall of theelevator shaft; a steel strand is fixedly connected to the top of the car; a top plate is fixedly connected to the surface of the inner wall of the elevator shaft and positioned at the top of the car; the left side of the top of the top plate is connected with a control box through a bolt; the top of the top plate is rotationally connected with a first transmission wheel; a motor is fixedly mounted on the back surface of the first transmission wheel; a second transmission wheel is rotationally connected to the top of the top plate and positioned on the right side of the first transmission wheel; and the steel strand is movably connected to the surfaces of the first transmission wheel and the second transmission wheel. Through cooperation of an electric extension rod, a limiting block, a photoelectric speed sensor, a chute, a spring, a linear speed sensor, a damping plate and a damping spring, the problem of incapability of guaranteeing the life safety of users under emergencies due toa certain potential safety hazards in a traditional elevator is solved.

The invention discloses a corrosion inhibitor coating device with controllable speed of a gathering and transportation pipeline. The corrosion inhibitor coating device comprises a controllable speed part and a film coating device; the inner part of the controllable speed part is a high-pressure air storage cylinder, and the outer periphery of the controllable speed part is sleeved with at least one sealing rubber cup; the front end of the high-pressure air storage cylinder is provided with a speed control valve and a first group of rotating mechanisms, the rear end of the high-pressure air storage cylinder is provided with a second group of rotating mechanisms and a first connecting ring, a plurality of circumferential rotating bearings and two groups of axial rotating bearings are uniformly mounted on the outer wall of the high-pressure air storage cylinder in the circumferential direction; the inside of a cylinder body of the film coating device is hollow and is used for storing a corrosion inhibitor, a liquid outlet groove and a film coating brush are arranged on the periphery of the cylinder body, a second connecting ring is arranged at the front end of the cylinder body, the first connecting ring is connected with the second connecting ring, and when the film coating device exceeds a preset speed, the speed control valve is opened. According to the corrosion inhibitor coating device, gas emitted by the high-pressure air storage cylinder of the controllable speed part can slow down the device, the running speed is controlled to be lower than a specific value, and the film coating device is uniformly coated on the inner wall of the pipeline by the film coating brush carrying the corrosion inhibitor, and therefore, the situation that the speed is controllable, the coating film is automatic and the coating film are uniform can be achieved.

The present invention discloses an underground crop digging robot and a control method thereof. The robot comprises a travelling mechanism, a soil loosening mechanism, a transmission mechanism, a bagging mechanism and a control system. The travelling mechanism comprises driving wheels and a driven wheel which are arranged at the two ends of a rack respectively, the driving wheels comprise a right driving wheel driven by a first motor and a left driving wheel driven by a second motor, and one ends of the driving wheels are a machine head. The soil loosening mechanism is arranged at the bottom of the rack and comprises a soil digging shovel and a soil loosening shovel, the tail parts of the soil digging shovel and the soil loosening shovel are both connected with the rack, and the transmission mechanism is arranged on the rack. The head of a horizontal conveyor belt is contacted with the tail part of the soil digging shovel, and the tail part is contacted with the bottom of a vertical conveyor belt. The bagging mechanism is arranged at the tail part of the rack and comprises a bag for holding the underground crops. The underground crop digging robot and the control method thereof solve the structural insufficiency of a conventional potato digging machine, highlight the characteristics of the potato digging machine, such as light volume, automatic driving, automatic potato bagging, etc., in the mechanism design, realize the man-machine separation, and avoid the electric shock potential safety hazards of people.

The invention discloses a rotatable large-sized air suction and dust removing device and relates to the dust removing field of casting equipment. The dust removing device comprises a driving system and an air suction vertical column; a rotary sleeve is arranged on the periphery of the air suction vertical column and certain gaps are reserved between the periphery of the air suction vertical column and the rotary sleeve; a rotary sleeve supporting shaft is arranged inside the air suction vertical column; the rotary sleeve is supported by the rotary sleeve supporting shaft; a first chain wheel is arranged on the outer surface of the rotary sleeve; the first chain wheel is driven by the driving system; a dust suction cover is arranged on one side of the rotary sleeve. The rotatable large-sized air suction and dust removing device has the advantages of enabling the rotary sleeve to rotate, enabling adjustment of positions of air suction and dust removing to be easy, fully achieving the speed reducing purpose due to speed reduction of the two-level chain wheel and enabling rotation to be achieved due to driven of a small power motor due to the fact that certain gaps are reserved between the rotary sleeve and the air suction vertical column.

The invention discloses a damping reduction system suitable for transportation of rolled steel goods. The damping reduction system comprises a damping device. The damping device comprises a pluralityof damping modules arranged along a motion path of a to-be-transported part. A damping module is arranged in a damping speed adjusting area. The damping speed regulation area is arranged in front of an unloading area. After the to-be-transported part enters the damping speed regulation area, the damping device is started, so that the damping modules generate corresponding resistance, and after thespeed of the to-be-transported part is effectively lowered, the goods are unloaded at an unloading area. Meanwhile, the front of the damping speed adjusting area is further provided with a speed measuring area mounted in an information collector. After the to-be-transported part enters a speed testing area, information such as speed is collected by the information collector and is then fed back to a control unit, the control unit then controls the damping device to enable a certain number of damping modules to work so as to generate matched damping, to-be-transported parts with different weights ,specifications and speed can be controlled to enter the unloading area at specific speeds, and the purposes of reducing the speed and unloading the goods safely are effectively realized.

The invention discloses a civil air defense door with a power assisting structure, and relates to the technical field of civil air defense door equipment. The civil air defense door comprises a civilair defense door structure, the civil air defense door structure comprises a first switch, a second switch, a rotary rheostat, a first electric telescopic rod, a second electric telescopic rod, an operation body, a control door body, a control lock body, locking bodies and a door body. The operation body is fixedly installed on the front wall of the side part of the door body, the control door body is fixedly installed at the rear end of the door body, the control lock body and the door body are fixedly installed together, the pair of locking bodies are symmetrically arranged, and the lockingbodies and the door body are fixedly installed together. The operation body comprises a shell frame, a pair of rotary rods, a first spring, a first push plate, a first sliding rod, a limiting shell, asecond spring, a second sliding rod and a second push plate, and the rotary rods are rotationally installed at the outer end of the shell frame. The operation of the civil air defense door can be convenient for users, and the use requirements are better met.

The invention discloses a brake mechanism of an escape backpack slow descending device. The brake mechanism comprises a brake cover plate and a brake shell with a containing groove, and further comprises a rotating block located in the containing groove and connected with a brake shaft, and at least three brake blocks. At least three strip-shaped eccentric grooves are formed in the rotating blockand evenly distributed circumferentially. The eccentric grooves extend inwards from the outer circumference of the rotating block. The extension cords of the eccentric grooves do not penetrate throughthe center of the rotating block. The brake blocks are evenly distributed circumferentially. Each brake block comprises a brake pad and an eccentric block, wherein the brake pad is in an arc shape, the shape of the eccentric block is the same as that of the corresponding eccentric groove, and the eccentric block extends into the corresponding eccentric groove and is slidingly connected with the eccentric groove. A reset piece for making the brake blocks to reset is omitted, meanwhile the aim of speed reduction through eccentric friction brake shells of the brake pads in use can be ensured, the installing efficiency is improved, and the brake blocks can be conveniently detached during maintaining.

The invention discloses an electric vehicle downhill safety brake circuit system, which solves the problem of downhill safety brake. The invention comprises a power supply VCC, a motor M, a downhill safety brake circuit and a speed regulating handle. The power supply VCC is connected with the downhill safety brake circuit, the speed regulating handle is connected with the downhill safety brake circuit, the brake switch is connected with the downhill safety brake circuit, and the downhill safety brake circuit is connected with the motor. The downhill safety brake circuit comprises a start switch SB1, a start switch SB2, an AC contactor KM1, an AC contactor KM2, a brake switch, a downhill auxiliary switch and an electronic timer. The invention has the advantages of high downhill braking safety.