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546results about "Self acting brakes" patented technology
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Lock-off descent control systems and devices
An automatic descent control device includes a line configured to be attached to a load. A line system retracts slack from the line when the line is not loaded and extends the line when the line is loaded. At least one braking system provides a braking force when the line is loaded so as to control extension of the line and a descent rate of the load. The at least one braking system is operable in at least two configurations, a first configuration that the at least one braking system lowers the load at a first descent rate, and a second configuration that the at least one braking system lowers or locks the load at a second descent rate. The load being a constant and the first descent rate is greater than the second descent rate.
Owner:TRUBLUE LLC
Reverse transmission locking and overload protection double-acting mechanism and electric cylinder
PendingCN119267521Asave spaceeasy to integrateSelf acting brakesSlip couplingConvex structureClassical mechanics
The invention discloses a reverse transmission locking and overload protection double-acting mechanism and an electric cylinder. The double-acting mechanism comprises a first shaft sleeve, a second shaft sleeve and a third shaft sleeve, the transmission wheel is movably arranged on the first shaft sleeve in a sleeving manner; the groove plates are oppositely and fixedly mounted on the transmission wheel in the circumferential direction and are provided with grooves for placing the balls; the retainer is mounted on the first shaft sleeve in a torque transmission connection manner and is provided with a first mounting hole for accommodating the ball; the convex sleeve is installed on the first shaft sleeve in a torque transmission connection mode, the first end of the convex sleeve is in direct or indirect contact connection with the balls, and a convex structure is arranged at the second end of the convex sleeve; the taper sleeve is connected to the lead screw shaft through a key, the small end of the taper sleeve is provided with a groove structure matched with the protruding structure, and the taper sleeve is provided with an outer conical surface; the sleeve is relatively and fixedly connected with the shell of the electric cylinder and is provided with an inner conical surface matched with the outer conical surface of the conical sleeve; one end of the compression elastic piece is pressed on the limiting end face fixed relative to the lead screw shaft, and the other end of the compression elastic piece abuts against the large-head end face of the taper sleeve.
Owner:JIANGSU ADVANCED CONSTR MASCH INNOVATION CENT LTD
Speed reducer, joint module and robotic arm
In some aspects, a speed reducer includes an inner gear having an inner gear hole; an outer gear having an outer gear hole, arranged in the inner gear hole and meshing with the inner gear; an eccentric wheel rotatably supported in the outer gear hole, the outer gear being driven by the eccentric wheel to revolve around the rotation axis of the eccentric wheel while rotating around its own axis; a brake block arranged on the eccentric wheel to rotate together with the eccentric wheel, the brake block being movable relative to the eccentric wheel between a braking position and a release position; an elastic member coupled to the eccentric wheel and the brake block, and configured to press the brake block towards the braking position; and a drive member coupled to the eccentric wheel, a rotation axis of the drive member being coaxial with the rotation axis of the eccentric wheel.
Owner:HANGZHOU TIANMING TECH CO LTD
Braking device
A braking device for a driveable part includes a driveable loading device which can be brought into radial contact with the driveable part having a first holding position and a second releasing position. At least one breaking member of the holding position bears frictionally against a radial circumference of the driveable part and secures the driveable part against rotation with a pre-settable force. The releasing position of the braking member permits a freewheeling of the driveable part. The loading device is adjustable between the holding position and the releasing position. The driveable part is coupled to an at least one permanent brake. A braking torque of the holding position of the permanent brake acts on the driveable part. The releasing position of the driveable part is freely rotatable with the permanent brake.
Owner:EDSCHA ENG GMBH
Transmission device with reverse braking function, joint module, and robotic arm
In some aspects, a transmission device with a reverse braking function includes a housing seat having a seat hole; a driven shaft rotatably and at least partially supported in the seat hole; a brake block arranged on the driven shaft and rotatable together with the driven shaft, the brake block being movable relative to the driven shaft between a braking position where the brake block abuts against the housing seat and a release position where the brake block is separated from the housing seat; an elastic member coupled to the driven shaft and the brake block and configured to press the brake block towards the braking position; and a drive member coupled to the driven shaft.
Owner:HANGZHOU TIANMING TECH CO LTD
Safety brake system
A safety brake system (40; 240) for use in a conveyance system. The safety brake system (40; 240) includes a guide rail (20) and a conveyance component moveable along the guide rail (20). The safety brake system (40; 240) includes a safety brake (42; 242), a linkage mechanism (56; 256) and an actuator (44; 144; 244) for the safety brake (42; 242). The safety brake (42; 242) is moveable between a non-braking position where the safety brake (42; 242) is not in engagement with the guide rail (20) and a braking position where the safety brake (42; 242) is engaged with the guide rail (20). The actuator (44; 144; 244) is configured to be mounted to the conveyance component and positioned between first and second ferromagnetic components. The actuator includes an array of magnetic components including a first magnetic component adjacent to and arranged between two second magnetic components.
Owner:OTIS ELEVATOR CO
IMPROVED LINEAR ACTUATOR
IMPROVED LINEAR ACTUATOR Linear actuator (1) comprising: - a linear unit (2) capable of generating linear motion, - a motor (3) for motorized drive of the linear unit (2), comprising a drive shaft (4), - a drive connection (5) extending from the motor (3) to said linear unit (2), - a centrifugal brake (6), connected to the drive shaft (4) and / or to the drive connection (5) via a one-way clutch device (7).The one-way clutch device (7) is configured such that: - when the drive shaft (4) or the drive connection (5) is driven in a first direction of rotation, the centrifugal brake (6) is not driven in rotation by said drive shaft (4) and / or said drive connection (5), and therefore produces no braking torque; - when the drive shaft (4) or the drive connection (5) is driven in a second direction of rotation, opposite to the first direction of rotation, the centrifugal brake (6) is driven in rotation by said drive shaft (4) and / or said drive connection (5) and can then produce, beyond a predetermined rotational speed, a braking torque on the drive shaft (4) and / or the drive connection (5). Figure to be published with the abbreviation: Fig. 1.
Owner:LINEATEC
Support device for a vehicle flap and method for mounting the support device
ActiveDE102024105666B3Self acting brakesBuilding braking devicesStructural engineeringMechanical engineering
Owner:EDSCHA MECHATRONICS SOLUTIONS GMBH
Novel brake and hub motor
PCT designated stage expiredWO2025081979A1Self acting brakesMechanically actuated brakesBrakeElectric machinery
The present application belongs to the technical field of mechanical braking and provides a novel brake and a hub motor. The novel brake comprises: a brake stator, an armature, a main coil, an elastic component, N friction discs, N movable plates and assembly parts, wherein the N movable plates and the N friction discs are alternately arranged, the N-th movable plate and the N-th friction disc are adjacently arranged, the N-th friction disc abuts against a limiting step, and N is an integer larger than or equal to 1. The peripheral size of the N friction discs is larger than the peripheral size of the N movable plates, the peripheries of the N friction discs all being provided with fitting parts, and the fitting parts being configured to fit a braking part. The N friction discs and the N movable plates are all sleeved on the periphery of the brake stator, so that the total thickness of the novel brake is greatly reduced. The friction discs no longer fit a brake axle by means of a central hole, but fit the braking part by means of the fitting parts arranged on the peripheries, so that the novel brake can be applied to a wider range of application scenarios, and the sizes of the brake stator and the armature can be designed more freely, thus reducing the overall size of the novel brake.
Owner:ALTRA IND MOTION SHENZHEN CO LTD
Improved linear actuator comprising a centrifugal clutch and associated method
PCT designated stage expiredWO2025099528A1Safety devices for lifting equipmentsSelf acting brakesBrake torqueDrive shaft
The invention relates to a linear actuator (1) comprising: - a linear unit (2) able to generate a linear movement, - a motor (3) for a motorized drive of the linear unit (2), comprising a drive shaft (4), - a drive connection (5) extending from the motor (3) to said linear unit (2), - a centrifugal brake (6), connected to the drive shaft (4) or to the drive connection (5) via a one-way clutch device (7). The one-way clutch device (7) is configured such that: - when the drive shaft (4) or the drive connection (5) is driven in a first direction of rotation, the centrifugal brake (6) is not rotated by said drive shaft (4) or said drive connection (5), and then does not produce any braking torque, - when the drive shaft (4) or the drive connection (5) is driven in a second direction of rotation, opposite to the first direction of rotation, the centrifugal brake (6) is rotated by said drive shaft (4) or said drive connection (5) and can therefore produce, upward of a predetermined rotational speed, a braking torque acting on the drive shaft (4) or on the drive connection (5).
Owner:LINEATEC
Non-backdriving rotation transmission mechanism
Non-backdriving rotation transmission mechanism includes an input shaft, an output shaft, a fixed casing having a cylindrical cavity that includes a cylindrical braking surface, at least one braking element connected to the input shaft and output shaft and adapted to interact with said braking surface, and mechanism for actuating the braking element from a non-braking condition to a braking condition.The braking element includes two brake pads articulated to each other and each having at least one braking contact zone adapted to interact with said braking surface, which brake pads are movable from an engagement position wherein the contact zones are remote from each other and are in contact with said braking surface, to a free position wherein the contact zones are close to each other and are not in contact with said braking surface.
Owner:FOND INST ITAL DI TECH
Brake assembly with thermal fuse
The brake assembly includes a housing, a rotor disc. The rotor disc includes at least one internal cavity. The at least one internal cavity includes a pawl and a thermal fuse. In use, the thermal fuse is configured to maintain the position of the pawl in the at least one internal cavity when a temperature is below a predetermined threshold, and wherein the thermal fuse is configured to melt when a predetermined threshold of temperature is reached during braking to release the pawl out of the at least one internal cavity towards the housing. The housing includes at least one recess configured to receive the pawl.
Owner:RATIER FIGEAC SAS
Overload protection electric hoist
InactiveCN119461124Areduce descent speedreduce speedAxially engaging brakesSelf acting brakesBrakeFriction force
The invention relates to the technical field of electric hoists, in particular to an anti-overload protection electric hoist. According to the anti-overload protection electric hoist, after locking of the brake is relieved, the descending speed of a heavy object can be reduced, manpower is saved, and the operation safety and efficiency are improved. An overload protection electric hoist comprises an electric hoist body, a first servo motor, a load increasing mechanism and the like, the right side of the lower portion of the electric hoist body is connected with the first servo motor, and the load increasing mechanism capable of detecting the load weight is arranged on the electric hoist body. When a heavy object needs to be lowered, the brake is removed, then the winding drum and the first friction disc rotate, the rotating speed of the first friction disc is reduced through friction force between the second friction disc and the first friction disc, then the rotating speed of the winding drum is reduced, the heavy object is lowered slowly, the descending speed of the heavy object can be reduced after locking of the brake is removed, and manpower is saved; and the operation safety and efficiency are improved.
Owner:QINGYUAN COUNTY CHUANDAO CRANE MACHINERY MANUFACTURING CO LTD
Retractor for a belt for retaining objects in space environments
A retractor for a belt for retaining objects in space environments that has an outer housing containing a spool for the belt is associated with a centrifugally activated braking mechanism that allows the belt to unwind normally when the belt is pulled to extract the belt from the belt retractor. During a rewinding phase, the centrifugally activated braking mechanism automatically limits a rewinding speed of the belt on the spool.
Owner:SABELT
Axial flow fan with failure stalling protection
The utility model relates to the field of fans, in particular to an axial flow fan with failure stalling protection, which is characterized in that a middle shell is supported in a fan frame, and a stator assembly is arranged in the middle shell; the rotor assembly is supported in the stator assembly; the limiting mechanism comprises a limiting wheel fixedly connected to the rotating shaft, and at least one limiting tooth is arranged on the limiting wheel; the locking claw is hinged to the middle shell, the far end of the locking claw is provided with a limiting claw tip, and the locking claw is connected with the middle shell through a detachable connecting structure. When the service life of the draught fan reaches the limit, the draught fan can stop running in time, electric leakage of the draught fan caused by abnormal running is avoided, shutdown operation of a system is facilitated, and adverse effects on equipment caused by running of the equipment using the draught fan under abnormal conditions are avoided.
Owner:CHENGDU QIHANG SYST INTEGRATION CO LTD
Braking mechanisms
An eddy-current mechanism including a rotor rotatable about a rotor axis at least one electrically conductive material coupled to the rotor for rotation therewith, at least one magnet configured to apply a magnetic field extending at least partially orthogonal to the plane of rotation of the conductive member, and characterised in that upon rotation of the rotor, the conductive member is configured to move at least partially radially from the rotor axis into the applied magnetic field.
Owner:EDDY CURRENT LIMITED PARTNERSHIP
Double-connecting rod reversing oil pumping unit and method
ActiveCN118958922Bincrease frictionhigh maintenance costSelf acting brakesFlexible member pumpsControl theoryFriction force
The present invention discloses a double-link reversing oil pumping unit and method, which are related to the technical field of oil pumping units. The method comprises: a bracket, on which a rotating roller is rotatably connected, on which a wide belt is wound, and on which a connecting frame is fixed; a commutator, which is arranged on the bracket; a counterweight, which is slidably connected to the connecting frame, and on which a sucker rod is installed; a support frame, which has at least two, which are symmetrically distributed and fixed to the bracket, and on which a buffer strip is fixed; a buffer block, the number of which is the same as that of the buffer strip, which is slidably connected to the counterweight, and on which a flexible block is fixed. The present invention moves the buffer block toward the adjacent buffer strip, and when the wide belt breaks, the friction force on which the flexible block is subjected to when falling is increased, thereby slowing down the falling speed of the buffer block and the counterweight, thereby preventing the counterweight from falling too fast to cause damage to the sucker rod, and increasing the maintenance cost of the oil pumping unit.
Owner:SHANDONG PLATEAU OIL & GAS EQUIP CO LTD
Reverse-direction locking coupling
[Problem] A design is provided that is capable of suppressing the rattling of an input element. [Solution to the problem] A leaf spring 6 has: two held sections 43, which are arranged on both sides of an input-side engagement section 14 in respect of a second direction perpendicular to a first direction, which is a direction of movement of a pressing surface 33, which moves away from or towards a pressed surface 7 and a central axis of an input element 3, and are held elastically between the input-side engagement section 14 and an input-side gripped section 34; and a base section 44, which connects the two held sections 43.
Owner:NSK LTD
Non-excitation operation brake
PCT designated stage expiredWO2025088743A1Axially engaging brakesSelf acting brakesSuction forceHeat generation
In a non-excitation actuated brake (1), the magnetic force of a permanent magnet (17) is used to hold a suction plate (13) at a brake force release position (13A) that is located away from a friction brake plate (12). The coil energization of an electromagnet (16) may be performed only when moving the suction plate (13) held at a brake force application position (13B) toward the brake force release position (13A) and when moving the suction plate (13) held at the brake force release position (13A) toward the brake force application position (13B). Heat generation and power consumption due to continuous coil energization can be suppressed. By setting the electromagnetic force by the electromagnet (16) to an appropriate value, it is possible to reliably and quickly switch between the brake force application state and the brake force release state.
Owner:HARMONIC DRIVE SYST IND CO LTD
BRAKE ASSEMBLY WITH A TOOTHED PART AND AT LEAST ONE SPRING PART
Owner:SEW EURODRIVE GMBH & CO KG
Adjustment of Kinematic Relationships between Components
To describe a device 1 comprising members in a kinematic relationship.SOLUTION: A kinematic relationship is at least partially governed by at least one magnetic induction force that introduces a threshold value of a force. This, in fact, provides a threshold value with respect to a partial movement and a hysteresis degree, and brakes movement until a sufficiently large energizing force E is applied. The effect can be further altered by use of additional magnetic induction force interaction with at least one additional member, and energizes or slows once started movement, and / or brakes the movement when once reached a new location.SELECTED DRAWING: Figure 1
Owner:EDDY CURRENT LIMITED PARTNERSHIP
Brake without reverse gear with a damper with limited authorization
Owner:THE BOEING CO
Braking device for a mining machine
The invention relates to a braking device for a mining machine comprising at least two brake elements mounted in pairs on a brake frame, which act simultaneously on at least one braking surface, and a brake release device arranged on each brake element, which generates a force opposing the braking force to release a brake lining of the brake element. To enable purely electrical operation of the braking device, the invention proposes that the brake release device be based on the principle of the magnetic attraction of opposite poles of two magnet pairs. To ensure proper operation, in particular a uniform attraction of the two magnet pairs, each brake element has a spring arrangement designed to maintain a matching air gap between the two magnets of each magnet pair, so that the magnetic forces are distributed evenly between the two magnet pairs.In that at least one of the two magnets of each magnet pair can be temporarily energized and the poles of the two magnets only attract each other when energized, the force opposing the braking force for releasing the brake pad can be generated and controlled electrically.
Owner:OLKO MASCHENTECHN
Automatic conveyor device and braking device therefor
An automatic conveyor device system and a braking device therefor. A braking device includes: a brake drum; a brake arm, with a brake lining provided thereon; a spring member that acts on the brake arm, urging the brake lining on the brake arm to make contact with the brake drum; an electromagnetic actuator, including an electromagnetic rod, where when the electromagnetic actuator is energized, the electromagnetic rod lifts the brake arm to separate the brake lining of the brake arm from the brake drum; and a sensor, configured to monitor a first position and a second position with a given spacing a during the extending process of the electromagnetic rod, and to respectively output a first signal and a second signal when the electromagnetic rod passes through the first position and the second position.
Owner:OTIS ELEVATOR CO
Brake system for mine trucks
A brake system includes a series of rotors for operatively coupling to a shaft and stators for operatively coupling to a frame. A service brake system includes a singular annular service piston extending continuously around the series of rotors and stators and a parking brake system includes a singular annular parking piston positioned to extend continuously around the series of rotors and stators. The service piston nests with the parking piston, under a spring bias, such that the parking piston and service piston continuously engage together around the series of rotors and stators to thereby create the parking brake forces. Springs act on the parking piston to drive the parking piston and nested service piston to engage for parking brake forces. Pressurization of the parking piston deactuates the nested pistons. Then separate pressurization of fluid acts on the service piston to overcome the spring bias and separate the service piston from the parking piston to create service brake forces.
Owner:CMBF PROD INC
Ultra-high molecular weight polyethylene fiber rope self-locking device
The invention belongs to the technical field of hoisting equipment, particularly adapts to high-altitude and low-altitude multi-scene hoisting operation and high-altitude safety protection, and particularly discloses an ultra-high molecular weight polyethylene fiber rope self-locking device which comprises a shell, a fixing handle is arranged on the shell, and a main ratchet wheel rotating disc is rotationally installed in the shell; a first pawl is arranged in the shell and matched with the main ratchet wheel rotating disc, and an auxiliary ratchet wheel rotating disc is further arranged in the shell. Through cooperation of the main ratchet wheel rotating disc and the auxiliary ratchet wheel rotating disc, the fiber rope forms a curved track, the number of locking stress points of the fiber rope is increased to two, and the local stress load of the fiber rope is dispersed; the problems that the ultra-high molecular weight polyethylene fiber rope is locally prone to friction damage and the structure is weakened during high-low-altitude operation are solved, meanwhile, the locking failure risk caused by extreme dynamic impact is reduced, and the complex and harsh safety protection requirement of the high-low-altitude operation can be stably met.
Owner:SHUNYUAN ELECTRIC RUGAO CITY ROPE BELT WEAVING CO LTD
A differential mechanical speed limiter
The present invention provides a differential mechanical speed limiter, which includes a support frame, an outer brake drum and an inner brake drum sequentially installed from the inside out, and the three are coaxially arranged. The ends of the active member and the driven member are both movably connected to the friction blocks, and the friction blocks are located between the outer brake drum and the inner brake drum. After the center of the active member is connected to the center of the driven member, a linkage mechanism is formed. The structure of the linkage mechanism is symmetrical. A driving shaft is provided in the middle of the active member. When the driving shaft rotates along the direction of the force under the action of an external force, the relative position between the active member and the driven member changes, causing the shape of the linkage mechanism to change, and the friction blocks generate a displacement change along the radial direction of the support frame, thereby squeezing the inner brake drum or the outer brake drum to provide braking friction force. The differential mechanical speed limiter described in the present invention solves the problem of realizing product lightweight of the existing speed limiter using rotational centrifugal force, and can be used bidirectionally.
Owner:TIANJIN AEROSPACE ELECTROMECHANICAL EQUIP RES INST
Anti-lock device for wheel and brake system equipped with such device
PendingCN121548520ABraking element arrangementsAxially engaging brakesMaster cylinderHydraulic circuit
The invention relates to an anti-lock device (1) for a wheel, which is arranged in a hydraulic pressure circuit between a master cylinder (2) and at least one brake caliper (3) of the wheel, in particular for an aircraft. According to the invention, the device comprises: a centrifugal element (4) attached to a rim (5) of the wheel and movable from a retracted position when the wheel is rotated at a speed below a threshold rotational speed to a deployed position due to centrifugal force when the wheel is rotated at a speed beyond the threshold rotational speed; a pressure regulating system (6) comprising a hydraulic inlet (6a) connected to the master cylinder (2) and a hydraulic outlet (6b) connected to the hydraulic inlet of the brake caliper (3), the pressure regulating system (6) is movable between a hydraulic circuit closed position when the centrifugal element (4) is in the retracted position and a hydraulic circuit open position driven by the centrifugal element (4) in the deployed position.
Owner:BELLINGER HOLDINGS
LOCKING ACTIVATION BETWEEN ELEMENTS
Owner:SUREWERX USA INC
Brake assembly for work machine
A brake assembly (200, 1100) for a work machine (100) includes a main brake housing (202), a disc stack (204), a brake housing (214) coupled with the main brake housing (202), and a piston (216) to compress the disc stack (204). At least one of the main brake housing (202) and the piston (216) define at least two spring pockets (205). The at least two spring pockets (205) are circumferentially spaced apart from each other. The brake assembly (200, 1100) also includes at least two spring assemblies (218) disposed between the main brake housing (202) and the piston (216). The at least two spring assemblies (218) are adapted to engage the piston (216) with the disc stack (204) to apply brakes via the brake assembly (200, 1100). Each spring pocket (205) of the at least two spring pockets (205) receives a corresponding spring assembly (218) of the at least two spring assemblies (218). Each of the at least two spring assemblies (218) includes at least one Belleville spring (232).
Owner:CATERPILLAR INC