43results about How to "To achieve the purpose of braking" patented technology

The invention discloses a rotation control valve, a rotation control system and a crane, and relates to the technical field of engineering machinery. The rotation control valve, the rotation control system and the crane solve the technical problem that system reliability is poor in the prior art. The rotation control system comprises a first valve, a second valve and a third valve, wherein when the second valve is at a first state, the first valve is communicated with an oil tank through a first oil passage; when the second valve is at a second state, the first valve is communicated with the third valve through a second oil passage; when the third valve is at a conducting state, the third valve is respectively communicated with the second oil passage of the second valve, a first main oil circuit port and a second main oil circuit port; and when the third valve is at an off state, oil circuits of the third valve respectively communicated with the second oil passage of the second valve, the first main oil circuit port and the second main oil circuit port are cut off. The rotation control system and the crane both comprise the rotation control valve. According to the rotation control valve, the rotation control system and the crane, reliability of the rotation control system is improved.

The invention relates to a self-adjustable manually-driven drum brake. The problems that in an existing manually-driven drum brake, a brake gap cannot be automatically adjusted, and a friction plate needs to be frequently replaced are mainly solved. The self-adjustable manually-driven drum brake is characterized in that the other ends of two brake shoe plates (2) are provided with racks (5) which vertically correspond to each other respectively, a brake shoe actuating device (3) comprises a gear (31), a gear shaft (32) and a swing arm (7), the gear shaft (32) is installed on a brake base plate (1) in a penetrating mode, an automatic gap adjusting device (8) is connected between the two brake shoe plates (2) and comprises a casing pipe (81) and a ratchet bar (82), and the two brake shoe plates (2) are each provided with a brake gap limiting hole (84). According to the drum brake, automatic compensation of the brake gap is achieved on the manually-driven drum brake, the service life is prolonged, the repairing and maintaining cost is reduced, and the advantages of being free of adjustment and easy to assemble are achieved.

The invention provides a strong wind resistant small-sized wind driven generator; and the strong wind resistant small-sized wind driven generator comprises a power generator spindle, a blade, a shell, a power generator rotor and a power generator stator, wherein the blade is fixed on the power generator spindle; the shell is used for supporting the power generator spindle by a bearing; the shell comprises a stator shell as well as a front end cover and a back end cover; the front end cover is positioned at the front end of the stator shell; the back end cover is positioned at the back end of the stator shell; the power generator stator is positioned in the shell and fixed on the power generator spindle; corresponding to the power generator rotor, the power generator stator is fixed on the internal surface of the stator shell of the shell; the strong wind resistant small-sized wind driven generator is characterized by further comprising a controller and a mechanical electromagnetic brake, which are connected with each other; the mechanical electromagnetic brake is mounted on the power generator spindle; and the controller is used for controlling the mechanical electromagnetic brake to brake. The strong wind resistant small-sized wind driven generator provided by the invention cannot be forced to operate when being blown by strong wind, so that the safety of the small-sized wind driven generator is ensured.

The invention discloses a power-off brake device which comprises an elastic claw component, a core shaft and a driving device, wherein the elastic claw component is provided with a tubular main body, the tubular main body is provided with a first end and a second end along the axis of the tubular main body, the first end and the second end are opposite to each other and are communicated, a plurality of elastic claws are arranged at the first end of the tubular main body, the core shaft is composed of a shaft body and a conical head part, the shaft body is arranged in the tubular main body through a shaft, the conical head part is positioned in the plurality of encircling elastic claws, the driving device can drive the core shaft to move between a first position and a second position in a reciprocating manner, when the core shaft is positioned at the first position, the conical head part can release the elastic claws to make the outer lateral walls of the elastic claws and the inner lateral wall of a concave part of a rotary table separated, and when the core shaft is positioned at the second position, the conical head part can push the elastic claws to make the outer lateral walls of the elastic claws and the inner lateral wall of the concave part of the rotary table prop against each other.

The invention discloses an end cover for a servo motor with a brake, which comprises an end cover body on which a brake is installed. The brake includes a yoke, an armature, a brake disc, a static plate, a spring and a coil, and the yoke is embedded in the In the end cover body, the coil is located inside the yoke, the left side of the yoke is exposed outside the end cover body, the armature is set on the left side of the yoke, the brake disc is located on the left side of the armature, the static plate is located on the left side of the brake disc, the yoke and the static plate Connected by several screws, the spring is located between the armature and the yoke, and the spring withstands the armature to lock the brake disc between the static plate and the armature. The end cover body, yoke, armature, brake disc and the middle of the static plate are all equipped with through hole. The invention directly embeds the yoke into the body of the end cover, not only the structure is firm and reliable, the braking is stable and reliable; but also the volume is reduced, the length of the motor is shortened, the difficulty of installation is reduced, the production cost is reduced, the production efficiency is improved, and the attenuation of the braking force is reduced. Increased braking force can provide higher braking force for motors with small size and high torque.

The invention discloses an automobile braking system based on wire control, which comprises a mechanical transmission mechanism and a brake pushrod group mechanism, wherein the mechanical transmission mechanism comprises two drive motors (1, 2), two screw mandrels (5, 6) and a shaft lever gear (7). Two drive motors are fixedly connected with the two screw mandrels respectively, and the two screw mandrels are meshed with the shaft lever gear (7); the brake pushrod group mechanism comprises a brake shaft lever (8), a brake nut (11) and a brake block (12), and the shaft lever gear (7) is fixed on the brake shaft lever. A screw thread (10) is arranged at one end of the brake shaft lever (8) near the brake block (12) and the brake shaft lever (8) is sheathed to the brake nut (11) by the screw thread (10). The automobile braking system has simple structure, casts off the traditional hydraulic control and represents the convenience of operation in respect of installation and maintenance. Furthermore, the braking system has good universality and is suitable for all automobile types in principle, in particular for automobiles using new energy, thus being capable of realizing pure electric automobiles in the true sense.

The invention relates to a framework device for wind collection power generation of a direct-drive accelerated type narrow tube. The framework device comprises a hub type component. One end of the hub type component is fixedly connected with the inner ring of a swing bearing. The other end of the hub type component is fixedly connected with one end of a tubular support. A tubular supporting hoop is arranged on the periphery of the tubular support in a matched manner. One end of the tubular supporting hoop is fixedly connected with a reinforced composite bridge through a gasket and a fastener. One end of a double-rail structure frame is fixedly connected with the tail portion of the reinforced composite bridge, and the other end of the double-rail structure frame is connected with the hub type component in a clamping manner. The end, connected with the hub type component, of the tubular support penetrates the reinforced composite bridge. According to the framework device, damage possibly caused by turbulent flow and gust vibration in the whole machine operation process is avoided, the key function is achieved on decomposing and eliminating of gravity loads, and the framework device is as firm as a rock even in severe wind conditions; and the framework device effectively adapts to application and popularization of large-power wind generation type wind power generators in the future.

An energy-saving electric car features that in its chassis, the electric generator, electric accumulator, main switch, forward-backward control module, reverse running control module, advancing control module, braking (electric generating) control module, and motor-generators are sequentially electrically connected. The rotor of motor-generator is fixed to wheel shaft and its stator is fixed to hub.

The invention relates to the field of new energy automobile braking, in particular to a downward pressing type emergency braking device for a new energy automobile and a braking method. The downward pressing type emergency braking device comprises a bottom plate, a motor top plate, a mounting plate, a servo motor, a rotating shaft and the like; the motor top plate is fixedly mounted on the rear side of the top face of the bottom plate, the mounting plate is fixedly mounted in the middle of the bottom plate, the servo motor is fixedly mounted on the rear side of the top face of the bottom plate and located below the motor top plate, and the rotating shaft is arranged in the servo motor. Through cooperation of the first-stage friction deceleration ring and the second-stage friction deceleration ring, the first-stage friction deceleration ring and the second-stage friction deceleration ring are in contact with the fixed rotating disc to play a role in deceleration and braking, so that the fixed rotating disc and the rotating shaft are decelerated and stopped, meanwhile, the rotating shaft can be prevented from being abraded, and the service life of the servo motor is prolonged.

The invention discloses a speed limiting and braking device applied to a wind driven generator and a using method thereof. The speed limiting and braking device comprises a mounting cylinder, a rotating rod and photoelectric mounting boxes, wherein a secondary generator box is mounted on the surface of the top of the mounting cylinder, a speed limiting and braking box is mounted in the secondary generator box, a second generator is mounted on the bottom wall in the speed limiting and braking box, the input end of the second generator is connected with a rotating rod, the top of the surface of the mounting cylinder is sleeved with a wind power resisting ferrule, a chassis is mounted at the top of the wind power resisting ferrule, two transverse rods are connected to the interior of the chassis through sliding grooves in an embedded mode, and each photoelectric mounting box is connected to a port of the end, far away from the chassis, of the corresponding transverse rod. According to the speed limiting and braking device, the speed limiting and braking box is arranged, the rotating speed in the device is sensed through the temperature, and then speed limiting treatment on the device is achieved through magnetic force hindering; electric telescopic rods are used for encircling and fixing the rotating rod subjected to speed reduction, and therefore the braking purpose is achieved; and convenience and high efficiency are achieved.

The invention relates to an overspeed brake, a braking device, a braking system and a window cleaning machine. The overspeed brake comprises a brake disc, a gear, a roll ball, an ejector pin, a friction plate and a gear shaft, wherein the brake disc comprises a gear installation space and is provided with a mounting hole which is through with the gear installation space; the gear is installed in the gear installation space of the brake disc in a pivoted mode; the roll ball is located at the position of a tooth groove of the gear and movably arranged in the brake disc; the ejector pin is movably installed in the mounting hole, and the roll ball drives the ejector pin to move in the direction far away from the gear installation space in the mounting hole; the friction plate is installed on the side of the gear; and the gear performs braking on the gear shaft through the friction plate. The overspeed brake has the advantages of being simple in structure and good in safety and is particularly suitable for the window cleaning machine.

The invention relates to a full-power speed increasing type impeller and framework system. The full-power speed increasing type impeller and framework system comprises an impeller speed increasing system, an electric generator and a framework system. The impeller speed increasing system converts external wind energy into rotating kinetic energy and transmits the kinetic energy to the electric generator; and the electric generator converts the kinetic energy into electric energy to be systematically output. According to the system, incompleteness of an existing narrow pipe wind gathering and electricity generating technology is improved, a direct drive speed increasing type impeller mechanical structure is improved in a conquered manner, and compatibility, safety reliability, stability and service life of an enhanced type composite bridge type rigid crosslinking installation platform structure system are further included, the size, weight and cost of the electric generator are reduced, and the full-power speed increasing type impeller and framework system can be suitable for the industrial requirements of development of the wind power course in the future.

The invention provides a linear magnetic resistance catapult. A catapulting bin 5 is arranged in a hull, a deck 1 and a linear groove 3 are arranged at the upper end of the catapulting bin 5, sliding wheel holes 7 and shaft holes are formed in base plates on two sides of the catapulting bin 5 and the deck 1, sliding wheels 8 are arranged in the sliding wheel holes 7, and shafts 11 are arranged at the centers of the sliding wheels 8. A stator 4 is arranged in the middle of a base plate of the catapulting bin 5, 12-120 groups of iron cores are arranged on three wall faces of the stator 4 and are wound with three-phase coil windings 9, and Hall position receivers are arranged in the three-phase coil windings 9. An armature controller connected with the three-phase coil windings 9 and a power transmission grid arrangement room 12 are arranged in the stator 4. An active cell 6 is arranged on the periphery of the stator 4, sliding grooves 10 are formed in the upper ends of two sides and the bottom end of the active cell 6, reversing gear teeth 13 are arranged at the bottom end of the left side of the active cell 6, a reversing gear 14, a transmission gear 15 and an electric motor 16 are arranged on the base plate of the catapulting bin 5 at the lower end of the reversing gear teeth 13, a tackle 17 is arranged on the electric motor 16, and a tractor 2 is arranged on a pushing plate of the active cell 6.

The invention discloses a robot joint closed-loop braking device, and relates to the technical field of robot joint brake. A motor body and a coaxial speed reducer body are included. An installing base, a worm gear, a worm and a power transmission device are further included. The motor body and the coaxial speed reducer body are correspondingly in transmission connection. An output shaft of the coaxial speed reducer body is in transmission connection with the worm gear. The installing base is correspondingly in fastened connection with one end of a motor body machine shell. The installing baseis rotationally connected with the worm which is correspondingly in meshing transmission with the worm gear. The cooperation deceleration ratio of the worm gear and the worm is correspondingly consistent to the deceleration ratio of the coaxial speed reducer body. One end of the worm is correspondingly in transmission connection with a motor shaft of the motor body through a power transmission device capable of being disconnected. The transmission ratio of the motor shaft of the motor body, the power transmission device and the worm is 1:1. The robot joint closed-loop braking device effectively solves the problems that an existing braking system is poor in reliability, high in energy consumption and large in size.