82results about How to "Play a braking effect" patented technology

The invention relates to a braking device of a tramcar, in particular to a centrifugal-type safety braking device of an active track-locking tramcar. The invention solves the problems that the existing passive anti-skid device is prone to insensitive response and long braking response time, the maintenance thereof is easily ignored, and the reliability thereof is low. In the invention, two groups of centrifugal speed sensors are arranged on two tramcar wheel bodies; the two ends of a rotary connecting rod are fixedly connected with two gears on the outer side of the tramcar frame by passing through the tramcar frame; two racks are mounted on the tramcar frame and engaged with the gears; one end of each rack, which is hook-shaped, is matched with the other end of a telescopic rod; two frameworks are arranged below the rotary connecting rod and connected with the tramcar frame via a suspender switch; two locking dogs are rotatablely mounted at the ends of the two frameworks, which are connected via a fixed connecting rod. The invention has the advantages of sensitive response, short braking response time, convenient maintenance and high reliability.

The invention provides a fatigue strength test device for a parking brake of a wheelchair. The fatigue strength test device comprises a base, a support mechanism, a motor driving mechanism, a rear wheel driving mechanism of the wheelchair, a front wheel driving mechanism of the wheelchair and a parking brake repetitive operation mechanism of the wheelchair, wherein the rear wheel driving mechanism of the wheelchair can drive two rear wheels of the wheelchair to be tested to rotate; the front wheel driving mechanism of the wheelchair can drive the two front wheels of the wheelchair to be tested to rotate; and the parking brake repetitive operation mechanism of the wheelchair can carry out repetitive braking on the parking brake of the wheelchair to be tested. In the invention, the specified times of repetitive operation are carried out on the parking brake of wheelchair so as to assess the performance of the brake; and the fatigue strength test device has simple structure and is convenient to operate.

The invention provides an accelerator pedal with a self-adaption brake function. The accelerator pedal comprises an automobile acceleration device, an automobile brake device and an accelerator pedal function transformation device. The accelerator pedal function transformation device comprises a radar, a calculation nodule, a storage battery, an electronic switch, a potentiometer, an electromagnetic relay and a first hydraulic oil cylinder, the radar is connected with the calculation nodule, and the calculation module is connected with an ECU. The storage battery, the electronic switch, the potentiometer and the electromagnetic relay are sequentially and electrically connected, the potentiometer is connected with the accelerator pedal, the electronic switch is connected with the ECU, the electromagnetic relay controls oil pressure of the first oil cylinder, and the first hydraulic oil cylinder is connected with a brake block through a hydraulic pipeline. The acceleration device is transformed into a brake device through the accelerator pedal function transformation device, the brake effect is achieved even though the accelerator pedal is treaded by a driver with panic, and car accidents caused by the panic can be avoided.

The invention discloses a high-rise escape slide. The high-rise escape slide comprises a slide body and a steel rail, steering ladders are welded to the two ends of the slide body, a plurality of grooves are formed in the surfaces of the top ends of the steering ladders, a pair of holes are formed in the two sides of the inner wall of each groove, miniature carrier rollers are connected between the holes in a clamped mode, and frosted pieces are installed at the joints of the miniature carrier rollers and the grooves. First sliding rails are arranged at the top end and the bottom end of the steel rail, the steel rail is movably connected with calipers through the first sliding rails, bearings are embedded in the two ends of the calipers, the calipers are movably connected with pulleys through the bearings, movable shafts are connected to the two sides of the pulleys, elastic telescopic piles are connected to the outer walls of the movable shafts, and check blocks are connected to one ends of the elastic telescopic piles. A plurality of baffles are installed on the inner walls, close to the check blocks, of the calipers, the calipers comprise handles, rotating shafts, clamping corners and buttons, and a pair of rotating shafts is installed on one sides of the handles. The high-rise escape slide is simple and reasonable in structure, novel in design, capable of effectively improving safety, easy and convenient to operate and high in practical value.

Provided is an operation method for a safe control system for considering an accelerator as a brake under emergency circumstances of a motor vehicle. When a driver steps on the accelerator, an acceleration signal acquired by an acceleration sensor 1 and a gear position signal acquired by a gear position sensor 2 are transmitted to a signal processing unit MCU3 synchronously. When a vehicle runs forward or backs up, the signal processing unit MCU3 compares the acceleration signal and the gear position signal with a set acceleration threshold value, to determine whether a control switch 4 of an electronic throttle output circuit cuts off output of electronic throttle signals, and meanwhile the signal processing unit MCU3 sends a braking system starting/shutting down signal to an electronic braking system 5. Cooperating with other accident prevention measures of a vehicle, the method can effectively prevent occurrence of various fatal traffic accidents caused by considering an accelerator as a brake when a driver is a beginner, in emergency circumstances, in fatigue driving or peccancy driving after drinking.

The invention relates to a side slip-preventing auxiliary brake for a goods van and belongs to the field of vehicle side slip prevention. The side slip-preventing auxiliary brake for the goods van comprises a goods van carrier and wheels, wherein the goods van carrier is arranged on the wheels, a side slip-preventing device is arranged below the goods van carrier and is hinged to the bottom end of the goods van carrier, and the side slip-preventing device vertically swings with the hinge end as the center and is in contact with the ground. The side slip-preventing auxiliary brake effectively reduces the probability that the goods van turns on its side under emergency braking. The side slip-preventing auxiliary brake is simple in structure, stabilizes the gravity center of the van, plays a braking effect and reduces the threaten of the goods van to other vehicles or persons.

The invention discloses a railway travelling device powerful in braking. The railway travelling device powerful in braking comprises a frame, wheels, axles and brakes, wherein the wheels are arranged at the bottom of the frame through the axles, each brake is arranged on the inner side of the corresponding wheel, a brake drum is arranged on the outermost side of each brake, a plurality of brake shoes are arranged on the inner side of each brake drum, a brake bar is inserted into a protruding portion of one brake shoe of each wheel, and a brake cylinder is connected to the other end of each brake bar. According to the railway travelling device powerful in braking, due to the facts that the shoe brakes are adopted, the brake bars are pushed through the brake cylinders, and the brake bars push the protruding portions on the brake shoes, the brake shoes have the tendency of outward expansion, and the brake drums arranged outside the brake shoes are extruded, and the braking effect is achieved; due to the fact that multiple brake shoes can be arranged, the braking effect can be enhanced, and the railway travelling device powerful in braking is simple in structure and novel in design, and is a novel railway travelling device.

The invention discloses an X-Y workbench with two degrees of freedom, and the workbench comprises a fixed structure, a first sliding structure, a second sliding structure, an ultrasonic motor with more than one degree of freedom, an ultrasonic motor control device with more than one degree of freedom, a bottom plate and a pressurizing device; the first sliding structure is arranged on the fixed structure, and the second sliding structure is arranged on the first sliding structure; one end of the ultrasonic motor with more than one degree of freedom is connected with the second sliding structure, and the other end of the ultrasonic motor with more than one degree of freedom is contacted with the bottom plate, and the ultrasonic motor with more than one degree of freedom maintains a certain pressure to the bottom plate through the pressurizing device; a workbench connecting plate is fixedly arranged on the second sliding structure; the ultrasonic motor control device with more than one degree of freedom controls the ultrasonic motor with more than one degree of freedom by signal excitation; and the ultrasonic motor with more than one degree of freedom controls the sliding of the workbench connecting plate in the X-Y direction by vibration. According to the X-Y workbench with two degrees of freedom, the precise positioning and the use of a single ultrasonic motor on the workbench with two degrees of freedom are realized.

The invention discloses a spray gun type anti-falling device of lifting equipment. The spray gun type anti-falling device comprises a lifting equipment body. A inflating air cylinder and a spray gun device are arranged at the bottom of the lifting equipment body. The spray gun device comprises spray gun pipes. Bullet storage bins are arranged under the spray gun pipes. The bullet storage bins are loaded with air nail bullets. The multiple air nail bullets are connected through traction ropes. One end of each traction rope is fixed to the bottom of the corresponding bullet storage bin. The lifting equipment body is further provided with a switch. Compared with the prior art, according to the spray gun type anti-falling device of the lifting equipment, the air nail bullets are shot continuously and nailed on the shaft wall of a lift shaft, and finally the lifting equipment is pulled through the traction ropes connected to the air nail bullets, so that each air nail bullet is stressed, traction of the lifting equipment is completed jointly through the air nail bullets, the function of preventing the lifting equipment from falling due to failures is achieved, and the personal loss and property loss are reduced.

The invention provides a transmission mechanism of a compact rack, which includes a bottom plate, a crank, a tension wheel, a driving gear, a driven gear, a chain and a braking mechanism, and the driving gear, the driven gear and the tension wheel can rotate Set on the base, the tension wheel is provided with two, the brake mechanism includes a housing, a brake shaft, a reset mechanism and a brake device, the reset mechanism includes a reset plate and a reset spring, the brake The device includes a handle, a rotating shaft and a brake pad; the invention is provided with a tension wheel to control the tension of the chain, and the brake mechanism can control the rotation of the driven gear through the brake shaft to achieve the effect of braking. The structure of the invention is simple , The transmission is convenient and the operation is reliable; the brake device is easy to operate, and the reset mechanism can return the brake shaft to the original state without other operations, and the operation is convenient.

The invention relates to a retarder, in particular to an independent retarder arranged in front of a box. The independent retarder is mainly used for medium-heavy type vehicles. The independent retarder arranged in front of the box is composed of a connecting hub, a flexible input plate, an input disc, a retarder shell, a retarder fixed wheel, a retarder movable wheel, an output shaft and a flywheel. The retarder is simple in structure, high in braking safety and capable of effectively solving the problems that a water spray brake pad is mainly used for a domestic tractor in the downhill process, and the braking effect is not very obvious.

The invention discloses a mixer convenient for mobile transportation, which comprises a bottom plate, a stirring tank and a motor. The stirring tank and the motor are arranged above the bottom plate. A rotating shaft is interspersed inside the stirring tank, and one end of the rotating shaft is connected with a gear through a One end of the connecting shaft is connected, and the other end of the connecting shaft is connected with the output shaft of the motor; one end of the bottom plate is fixedly provided with a handle, and three hydraulic presses are respectively arranged on both sides of the bottom plate, and two front wheels are arranged on the bottom of the bottom plate and two rear wheels; a control panel is also arranged on the base plate. The wheels of the mixer of the present invention are all set as honeycomb tires, and the wheels are all connected to the bottom plate through electric telescopic rods, and the mixer is supported and fixed by a hydraulic press and a hydraulic rod, and a support plate is provided at the bottom of the hydraulic rod to prevent damage to the ground. During the moving process, the worker drives the wheels through the drive motor, and the worker only needs to adjust the direction of the mixer through the handle.

The invention discloses an electric wheelchair driven by brushless motors and multistage planetary gear speed reduction mechanisms. The electric wheelchair comprises a wheelchair frame, a pair of steering wheels, a pair of power wheels, a pair of driving mechanisms, an energy storage mechanism and a control handle. The pair of steering wheels and the pair of power wheels are arranged at the bottom of the wheelchair frame; the pair of driving mechanisms is arranged on the wheelchair frame and is used for driving the pair of power wheels to rotate; the energy storage mechanism is arranged on the wheelchair frame and is connected with the pair of driving mechanisms; the control handle is arranged on the wheelchair frame and is connected with the energy storage mechanism; the driving mechanisms comprise the brushless motors and planetary gear speed reduction mechanisms, the planetary gear speed reduction mechanisms are at least three stages of planetary gear speed reduction mechanisms, the brushless motors are integrally connected with the planetary gear speed reduction mechanisms, output shafts of the brushless motors are in power connection with input ends of the first-stage planetary gear speed reduction mechanisms, and output shafts of the last-stage planetary gear speed reduction mechanisms are in power connection with hubs of the power wheels of the electric wheelchair. The electric wheelchair has the advantages that the electric wheelchair is simple in structure, and the weight of the electric wheelchair is correspondingly reduced.

The invention relates to the technical field of natural gas pipeline welding, in particular to an anti-corrosion natural gas pipeline laying and welding auxiliary device. The anti-corrosion natural gas pipeline laying and welding auxiliary device comprises a supporting seat, and a lifting structure is arranged in the supporting seat; a limiting structure is arranged between the lifting structure and the supporting seat; the side face of the supporting seat is connected with a guide structure; a moving structure is arranged on the bottom side of the guide structure; a clamping and fixing structure is arranged on the top side of the guide structure; and a connecting structure is connected between the clamping structure and the guide structure. The overall stability of the auxiliary device is guaranteed through the lifting structure, the stability of the supporting seat is further guaranteed through the limiting structure, lifted pipelines are preliminarily positioned through the guide structure, alignment between the pipelines is facilitated, guiding and position calibration are conducted on the lifted natural gas pipelines through the moving structure, the pipelines have better stability in the position calibration process through the clamping and fixing structure, shaking between the structures is avoided through the connecting structure, and meanwhile installation is convenient.

The invention discloses a transmission shaft deflection device and a using method thereof. The transmission shaft deflection device comprises a main machine body, a tire drive cavity is fixedly formedin the main machine body, a reversing cavity is fixedly formed in the right side of the tire drive cavity of the main machine body, a pedal control cavity is fixedly formed in the main machine body which is located on the right side of the reversing cavity, and a power cavity is fixedly formed in the main machine body which is located on the right side of the pedal control cavity. A first taperedslot extending rightwards is formed in the right side end wall of the reversing cavity, a second tapered slot extending leftwards is formed in the left side end wall of the pedal control cavity, andthe tail end extending rightwards of the first tapered slot communicates with the tail end extending leftwards of the second tapered slot. A travelling pedal slot is formed in the top end surface of the main machine body located above the pedal control cavity, and a brake pedal slot is formed in the top end wall of the main machine body located on the right side of the travelling pedal slot.

The invention discloses a warehouse operation robot with an automatic avoidance function, and relates to the field of warehouse operation robots. The warehouse operation robot aims to solve the problem that an existing warehouse robot is not provided with an additional anti-collision mechanism so that the rigid collision can occur once the detection failure occurs, and the internal structure of the warehouse robot is prone to being damaged. The warehouse operation robot is characterized in that a first distance measuring outer shell and a second distance measuring outer shell are fixedly arranged on the outer surfaces of the two symmetrical ends of a robot body correspondingly, wherein a first distance measuring opening and a second distance measuring opening are formed in the outer surface of one side of the first distance measuring outer shell and in the outer surface of one side of the second distance measuring outer shell respectively, one end of the first distance measuring opening and one end of the second distance measuring opening are both provided with transparent protection plates, and three laser distance measuring instruments are fixedly arranged in each of the interiors of the first distance measuring outer shell and the second distance measuring outer shell correspondingly.

The invention provides a maintaining device of a public bicycle. The maintaining device comprises a first supporting frame; X-axis lead screws are parallelly arranged at the two ends of the first supporting frame correspondingly; an X-axis stepping motor is arranged on each X-axis lead screw; the two ends of a Y-axis lead screw are fixedly connected with the X-axis lead screws correspondingly; a Y-axis stepping motor is arranged on the Y-axis lead screw; a Z-axis lead screw is slidably fixed on the Y-axis lead screw; a Z-axis stepping motor and a pressure sensor are fixedly arranged on the Z-axis lead screw; the bottom of the Z-axis lead screw is fixedly connected with a fixed frame; a screw driver is arranged in the fixed frame; a second supporting frame is arranged below the Y-axis lead screw; a front wheel conveying belt and a rear wheel conveying belt are further arranged on the second supporting frame; a front left moving block and a front left limiting switch are arranged at one end of a positioning rod; and a front right moving block and a front right limiting switch are arranged at the other end of the positioning rod. Investment of manpower and material resources for maintaining the public bicycle is reduced greatly, and the accuracy of maintenance is guaranteed.

The present invention relates to the technical field of monorail cranes, particularly to a monorail crane locomotive hydraulic drive system, which comprises a bidirectional variable capacity pump, a first overflow valve, a second overflow valve, a third overflow valve, a hydraulic motor, an oil supplementing pump, a first check valve, a second check valve, a two-position three-way manual reversingvalve, a braking cylinder, a two-position two-way hydraulic control reversing valve and an oil groove. According to the present invention, the bidirectional variable capacity pump drives the hydraulic motor to rotate forward and backward so as to achieve the front-back movement of the monorail crane locomotive; by using the closed loop, the structure is compact, the reliability is strong, the driving efficiency is substantially improved, and the energy is saved; by using the braking cylinder, the hydraulic motor can be braked, such that the monorail crane locomotive can be stable at the stationary state; and by using the two-position two-way hydraulic control reversing valve, the heat generation of the braking cylinder during the braking can be avoided so as to prolong the service life ofthe braking cylinder.

The invention belongs to the technical field of transport vehicles and particularly relates to a semitrailer axle. The semitrailer axle comprises a mounting plate, an axle main body, a rotating ring,a first mounting rod, a second mounting rod, a mounting ball and a rotating wheel; the mounting plate is fixedly arranged on the lower surface of the back end of a vehicle body; the right surface wallof the mounting plate is fixedly connected with a lifting spring; the right end of the lifting spring is connected with the internal left end of the mounting all; the right end of the lifting springis fixedly connected with a buffer block; is arranged in a sliding groove in the left end of the mounting ball in a sliding way; the mounting ball is fixedly connected with the upper end of the firstmounting rod; the lower end of the first mounting rod is fixedly connected with the upper surface of the rotating ring; the first mounting rod is arranged in parallel with the mounting plate at the initial time; and the semitrailer axle is mainly used for solving the problems of property loss and life danger which may be caused by the fact that the semitrailer axle in the prior art cannot providea certain braking effect for the semitrailer when the semitrailer stops abruptly and the semitrailer can slide for a long distance during abrupt stop.

The invention discloses a brake mechanism of a marine gearbox. The brake mechanism comprises a case body, a box body, an insertion rod and an electric pushing rod, wherein an insertion hole is formedin one side of the case body; the inner part of the insertion hole is rotatably connected with a rotary shaft; one end of the rotary shaft is fixedly connected with a gear; the peripheral outer side of one end, away from the gear, of the rotary shaft is fixedly connected with a first magnet; a tube body is connected on the peripheral outer part of the rotary shaft in a sleeving mode; and the tubebody is rotatably connected to one side of the case body through a first bearing. In a using process, an electric pushing rod switch controls the electric pushing rod to extend while brake effect needs to achieve for the rotary shaft, so that a friction block is in contact with a friction pad, a fixed circular disc stops rotation, the brake effect for the rotary shaft is achieved as a second magnet inside the tube body applies repulsive force to the first magnet in a moving process, and the friction block is not in direct contact with the rotary shaft, and therefore, abrasion on the rotary shaft is reduced, replacing times of the rotary shaft are reduced, and labour intensity of a worker is reduced.

The invention provides a living-object containing device formed in a 3D-printing mode, and belongs to the technical field of 3D printing. The living-object containing device formed in the 3D-printing mode comprises a frame and containing boxes. The frame comprises a first support, a second support and a bottom plate; rod pieces are arranged between the first support and the second support, and comprise transverse rods, first fixing sleeves and second fixing sleeves, the transverse rods are sleeved with first stopping rods with the circular-ring-shaped cross sections and second stopping rods with the circular-ring-shaped cross sections, and the containing boxes are arranged on the transverse rods through hook rings; a first transmission device and a second transmission device are arranged on the first support and the second support respectively; the frame, the containing boxes, the rod pieces, the first stopping rods, the second stopping rods, first stopping rings, second stopping rings, the first transmission device and the second transmission device are made from wood-plastic composite materials through a 3D printer. According to living-object containing device, manufacturing man-hours are reduced with the 3D technology, and the living-object containing device also has the advantage that living objects can be conveniently and rapidly put and taken.