52results about "Braking drums" patented technology

The invention provides a brake comprising a stator assembly comprising a stator iron core and a coil winding, and the coil winding is arranged on the stator iron core; the hub assembly comprises a hub and magnetic steel, and the magnetic steel and a friction part are arranged on the side, facing the stator core, of the hub; the armature is arranged between the stator assembly and the hub assembly; when the coil winding is electrified, the armature is adsorbed on the stator iron core; and when the coil winding is powered off, the armature is adsorbed on the friction part under the action of the magnetic force of the magnetic steel to brake the hub. During power-off braking, the suction force of the magnetic steel to the armature and the counter-acting force of the hub to the armature are mutually counteracted in the brake and do not act externally, and the axial force of a traditional brake to a motor is eliminated.

The invention discloses an anti-deformation thick-wall pig iron brake disc, and relates to the technical field of pig iron brake discs, the anti-deformation thick-wall pig iron brake disc comprises a hub, a disc body is fixedly connected to the circumferential surface of the hub, mounting sleeves are arranged on the circumferential surface of the disc body, a bolt penetrates through the mounting sleeves, and a pushing piston is arranged in each mounting sleeve; a brake block is fixedly connected to the end, away from the mounting sleeve, of the pushing piston, a brake expansion mechanism is arranged in the mounting sleeve and comprises a mounting groove, the mounting groove is formed in the brake block, and a pushing block is slidably connected into the mounting groove. Through mutual cooperation of the expansion brake block, the pushing block and the linkage assembly of the brake expansion mechanism, the effective friction contact area is dynamically increased in the braking process, heat generated by friction is more evenly dispersed on the disc face, the local peak temperature and thermal stress are remarkably reduced, and the braking efficiency is improved. And the buckling deformation of the brake disc caused by heat concentration is inhibited from the source.

To provide a hoisting machine and elevator that can prevent damage to the lining. [Solution] The hoisting machine comprises a drive sheave, a braked body that rotates together with the drive sheave, and an electromagnetic brake device that brakes the rotational movement of the braked body and the drive sheave. The electromagnetic brake device has a brake shoe 15 that approaches and moves away from the braked surface of the braked body, and a plurality of linings 16 provided on one surface of the brake shoe 15 facing the braked surface and in contact with the braked surface. The plurality of linings 16 are arranged so as to avoid the locations of fixing holes 34 provided on the brake shoe 15 that face the braked body.

The present disclosure relates to a brake drum, comprising a brake drum wall extending in a circumferential direction and in an axial direction, the brake drum wall extending in the axial direction from a first axial end of a first axial end portion to a second axial end of a second axial end portion of the brake drum, the brake drum wall comprising an inner surface and an outer surface, wherein the brake drum wall has a wall thickness in a radial direction between the inner and outer surfaces, wherein the brake drum comprises a plurality of cooling channels arranged internally between the inner and outer surfaces, each one of the cooling channels extends in the axial and circumferential directions between an inlet at the first axial end portion and an outlet at the second axial end portion.

A drum brake assembly that includes a brake drum, first and second brake shoes, a cam shaft, a first tappet, a second tappet, and a wear adjuster mechanism. The wear adjuster mechanism has a cross shaft and a sensor. The sensor is configured to detect rotation of the cross shaft about a longitudinal axis to monitor wear of the first and second brake shoes and a braking surface of the brake drum.

A brake drum, comprising a brake drum wall extending in a circumferential direction and in an axial direction, the brake drum wall extending in the axial direction from a first axial end of a first axial end portion to a second axial end of a second axial end portion of the brake drum, the brake drum wall comprising an inner surface and an outer surface, wherein the brake drum wall has a wall thickness in a radial direction between the inner and outer surfaces, wherein the brake drum comprises a plurality of cooling channels arranged internally between the inner and outer surfaces, each one of the cooling channels extends in the axial and circumferential directions between an inlet at the first axial end portion and an outlet at the second axial end portion.

A brake drum for a drum brake of a motor vehicle, the brake drum having:a ring section extending concentrically about a rotation axis; anda circular wall section extending at an angle to the rotation axis;wherein in the brake drum has at least one portion that deviates from at least one of:a) a rotation symmetric configuration of the brake drum with respect to the rotation axis;b) a material comprised by at least one other portion of the brake drum.

The utility model relates to the technical fields of brake drum especially is concerned with a brake drum with prevent silt from invading structure, when using, the brake bottom plate is fixedly installed on the car beam frame through multiple groups of second through -hole, then brake drum body is fixedly connected with the wheel hub through multiple groups of first through -hole, the clearance of sealing washer subassembly round hole and the wheel hub is sealed, the clearance between brake drum body and brake bottom plate is sealed through dustproof subassembly, when using, brake bottom plate and brake structure fixedly stationary, improve the life, including brake drum body, brake bottom plate, first through -hole, second through -hole and round hole, brake drum body front end is provided with round hole, brake drum body front end periphery is provided with multiple groups of first through -hole, brake bottom plate periphery is provided with multiple groups of second through -hole, still include dustproof subassembly and sealing washer subassembly, brake drum body and brake bottom plate between are provided with dustproof subassembly, round hole inboard is provided with sealing washer subassembly, brake bottom plate front end is provided with brake structure.

The invention relates to a drum brake assembly for braking a wheel a motor vehicle that rotates about a rotation axis,with:a brake drum having a back wall section extending at an angle to the rotation axis and a circumferential wall section,at least one brake shoe assembly,wherein each of the brake shoe assembly and brake drum has a contact portion for contacting the respective other of the brake shoe assembly and brake drum to generate a braking force; andwherein the brake shoe assembly is configured to be coupled to a rotatable axle component of the motor vehicle to rotate relative to the brake drum about the rotation axis.

The invention is aimed at solving issues of pad suction and drag torque, which occur during driving in disk brake systems. The invention relates to a brake disk for a disk brake system, having at least one friction surface, which is at least sectionally delimited by at least one protrusion, protruding from the at least one friction surface, at an outer circumferential side and / or at an inner circumferential side of the at least one friction surface. The invention also relates to a brake system having a brake disk of this type.

A method of refurbishing a steel-shell brake drum that includes superheating a worn-out brake drum until the worn-out brake drum is glowing hot. The worn-out brake drum includes a steel shell and a worn-out, gray-iron layer bonded to an inside surface of the steel shell. The method further includes centrifugal casting additional molten iron to the gray-iron layer to increase the radial thickness of the gray-iron layer.

The utility model belongs to the technical field of mechanical braking equipment, and particularly relates to an elevator safety braking device which comprises a fixing seat. A first brake drum is mounted on the inner side wall of the fixed seat; a second brake drum is mounted on the side wall of the fixed seat; a plurality of fixed shafts are mounted on the side wall of the fixed seat; the multiple fixing shafts can fix a first brake drum and a second brake drum. The side wall of the first brake drum is rotationally connected with a bolt; the bolt penetrates through the first brake drum; the end part of the bolt is fixedly connected with a brake tile; the side wall of the brake tile is in sliding connection with a brake disc; the second brake drum is in sliding connection with the brake disc; the middle part of the brake disc is hollow; a bolt is installed on the first brake drum and penetrates through the first brake drum, the end of the bolt is fixedly connected with a brake tile, the speed reduction of the brake disc is adjusted by adjusting the position of the bolt and adjusting the contact size of the brake tile and the brake disc, and the braking effect on the elevator is achieved.

The utility model provides a high-strength wear-resistant gray cast iron brake drum which comprises a brake bottom plate fixed with an axle, two brake shoes which are oppositely arranged are hinged on the brake bottom plate, a brake drum which is braked through friction of the two brake shoes is rotatably arranged on the brake bottom plate, and a spray assembly is arranged in the brake bottom plate. The spraying assembly comprises an annular water pipe coaxial with the brake bottom plate, the annular water pipe is located between the two brake shoes, a plurality of spray nozzles are arranged on the annular water pipe at equal intervals, a water inlet pipe is installed at the water inlet end of the annular water pipe, the other end of the water inlet pipe penetrates through the back of the brake bottom plate and then is communicated into a water tank on the vehicle, and water outlets are formed in the brake shoes. The spraying assembly is arranged on the brake bottom plate, the spraying assembly is started to spray mist, water mist is dispersed in the brake drum and makes contact with the surface of the brake drum, the brake drum is cooled, air continuously enters the water outlet to accelerate air flowing, the cooling effect is improved, and meanwhile the water mist is heated, evaporated and collected into water drops to be discharged in time through the water outlet.

The application discloses a novel lightweight bimetallic brake drum, which comprises an outer shell, reinforcing ribs are designed on the circumferential part of the outer shell, an annular reinforcing band is designed on the large end face of the outer shell, a plurality of groups of fixing holes are uniformly arranged on the circumferential annular part of the outer shell, a plurality of friction plates are installed on the inner wall of the outer shell, the outer shell is made of steel material, the friction plates are made of high-carbon wear-resistant gray cast iron material or ceramic material, the friction plates are in an arc shape, counterbores are designed on the surfaces of the friction plates, no less than three friction plates are arranged in a single outer shell, a gap is reserved between two adjacent friction plates, the outer shell and the friction plates are connected and fixed through fasteners, and the threads of the fasteners are coated with thread locking agents. The application has the advantages of lightweight design, light weight, reduction of about 20%-30% of a traditional brake drum, consideration of fuel consumption, long service life, prevention of cracking of the brake drum due to heat recession of a brake motor, influence on driving safety and reduction of maintenance cost in the later period.

The embodiment of the utility model provides a brake cooling system and a vehicle, and relates to the technical field of vehicles. The brake heat dissipation system comprises a brake cavity and at least one heat dissipation channel, the brake cavity is used for containing a brake, the first end of the heat dissipation channel communicates with the brake cavity, and the second end of the heat dissipation channel communicates with the exterior of a vehicle; a heat dissipation fan is arranged in at least one heat dissipation channel and can dissipate heat of the brake cavity through the heat dissipation channel. By arranging the heat dissipation channel and the heat dissipation fan, active heat dissipation is conducted on the brake in the brake cavity through forced convection, and a traditional water spraying cooling mode is replaced. A large water tank or a water spraying device does not need to be installed, the problem that dust and impurities adhere to a brake hub due to water spraying is solved, pollution of a brake system is reduced, stable performance of the brake system is maintained, and the heat dissipation efficiency of the brake is remarkably improved.

The invention relates to a method for manufacturing a brake drum for a vehicle. In the method, at least two connecting elements (1), each having a mounting section (7) and formed at least partially from a first material, are provided (B). An intermediate brake drum component (30) with a shell element (26) is produced by centrifugal casting of a second material within a die device (20, 40) rotatable about an axis of rotation (25) (E). During centrifugal casting, the connecting elements (1) are arranged at a predetermined distance (d) from one another and extend at least partially in a radial direction (R) relative to the axis of rotation (25) into the formed shell element (26).

Composite brake drum, comprising a connecting section (2) oriented perpendicular to the axis of rotation (X) of the composite brake drum (1) and designed to connect the composite brake drum (1) to a wheel to be braked, comprising an annular shell section (5) supported by the connecting section (2) and rotating around the axis of rotation (X) of the composite brake drum (1), and comprising a friction ring (6) supported by the shell section (5), which also rotates around the axis of rotation (X) of the composite brake drum (1) and has a friction surface (16) on its free inner circumferential side, which is rotationally symmetrical to the axis of rotation (X) of the composite brake drum (1), wherein the connecting section (2) is made of a light metal material and the friction ring (6) is made of a cast iron material, wherein the friction ring (6) has a structure on its outer circumferential surface,the structure is formed by protrusions (17) and depressions (18) which are at least partially bounded by the protrusions (17), and wherein the material of the shell section (5) has penetrated into the depressions (18) of the structure, characterized in that the friction ring (6) has a thickness (D1) in a first edge region (12), which is bounded by its end face (7) facing the connection section (2), which is smaller than the thickness (D2) that the friction ring (6) has in its second edge region (14), which is bounded by the end face (10) facing away from the connection section (2), and that the thickness (D1) of the first edge region (12) increases continuously from its edge associated with the connection section (2) towards the second edge region (14) and the thickness (D2) of the second edge region (14) increases continuously up to the end face (10) facing away from the connection section (2).that the increase in thickness (D2) over the second edge region (14) is greater than the increase in thickness (D1) over the first edge region (12) and the proportion of the width of the second edge region (14) to the width (BR) of the friction ring (6) is greater than the proportion that the width of the first edge region (12) occupies to the width (BR) of the friction ring (6) and that at least some of the protrusions (17) extend parallel to the axis of rotation (X) of the composite brake drum (1)..

The invention relates to the technical field of traction and lifting equipment, in particular to a silent ratchet mechanism and a winch brake device based on the silent ratchet mechanism, the silent ratchet mechanism comprises a pawl seat, a ratchet and a pawl, the ratchet and the pawl are matched with each other, and a contact striking part of at least one of the ratchet and the pawl is provided with a silencing part made of a non-metal wear-resistant material; the shaft body is provided with a first thread part; the ratchet mechanism is arranged on the shaft body; the movable part is in threaded fit with the first threaded part; and the limiting part limits the movement stroke of the movable part. The impact noise is remarkably reduced, the application requirement of a high-silence working environment is met, the applicability is higher, the acting force on a winch brake device of a ratchet wheel and a pawl and an external mounting support in the braking process is effectively reduced, the requirement for the winch brake device of the ratchet wheel and the pawl and the mounting support is lower, a lighter support is allowed to be used in cooperation with the winch brake device, and the practicability is high. The weight and the cost of the whole product series are reduced, and the safety and the reliability are remarkably improved.

The utility model relates to the field of brake systems, and discloses a wheel drum and disc combined type brake structure, which comprises a drum ring, a disc and a disc, the drum ring comprises an inner ring surface and a plurality of drum combination holes, the inner ring surface can be abutted against a drum type brake shoe, and the drum combination holes are positioned on the periphery of the inner ring surface; the disc comprises a central hole and a plurality of disc combination holes positioned on the hole wall of the central hole; the connecting seat comprises a central block and a plurality of seat combination holes, the central block can be locked by a wheel shaft bolt, and the seat combination holes are formed in the periphery of the central block; the material specific gravity of the connecting seat is smaller than that of the drum ring; the fixing devices are respectively arranged at the drum combination hole of the drum ring, the disc combination hole of the disc and the seat combination hole of the connecting seat in a penetrating manner, so that the drum ring, the disc and the connecting seat are combined and fixed, and the drum ring is partially positioned in the central hole of the disc; and the connecting seat is connected with the drum ring and is partially positioned in the central hole of the disc and partially exposed out of the central hole in a protruding manner. Therefore, the integral structure is light in weight, and structural rigidity and wear resistance are kept.

The utility model discloses a brake hub with better heat dissipation performance, which relates to the technical field of brake hubs, and comprises a hub body, inclined branch heat dissipation channels with mutually communicated inner and outer rings are densely distributed on the periphery of the hub body, and a plurality of heat dissipation holes are communicated with the front and rear sides of the inclined branch heat dissipation channels, so that heat exchange and heat dissipation can be effectively enhanced; an inner ring of the hub body is connected with fan blades through a bearing and a one-way overrunning clutch; during normal running, the one-way overrunning clutch enables the fan blades to be separated from the hub body, and extra energy consumption and abrasion are avoided; during braking, the fan blades continuously rotate by virtue of inertia to generate airflow to dissipate heat of the hub, and the special mass distribution of the fan blades increases the rotational inertia to improve the heat dissipation effect; in addition, the brake hub is further provided with a cooling fan for forced air cooling and a spraying nozzle for forced water cooling. When the temperature of the hub is abnormal, the infrared temperature sensor can transmit a signal to the control system, the cooling fan or the spraying nozzle is intelligently started, and rapid cooling is achieved.

The invention relates to a brake drum for a drum brake, having a first element comprising a first metallic material and a second element comprising a second metallic material, wherein the first element is connected to the second element by means of a casting technique. The brake drum further has an adhesive layer, wherein the adhesive layer is located between the first element and the second element, and wherein the first element and the second element are connected in a material-locked manner by means of intermetallic bonding by means of the adhesive layer. Furthermore, the invention also relates to a method for producing the brake drum and to the use thereof.

The present invention relates to a braking system, a drum brake unit and a method for maintaining a drum brake unit, the braking system comprising a brake drum and at least two wear elements, wherein the wear elements are designed to come into contact with an element-side connecting section on a drum-side connecting section of the brake drum, wherein the element-side connecting section and the drum-side connecting section engage in such a way that the engagement prevents a displacement of the wear element relative to the brake drum radially to an axis of rotation of the brake drum.

This vehicle braking assembly (1) comprises a brake drum (2) intended to be integral with a wheel of the vehicle and having an outer cylindrical surface (6) and a braking track (8) formed by an inner cylindrical surface (7) opposite the outer cylindrical surface (6), and a brake backing plate (3) comprising an outer radial end portion (11) oriented substantially radially and disposed opposite said brake drum (2) on an inner side of the vehicle. The outer cylindrical surface (6) extends towards the inner side of the vehicle so as to cover an outer radial end face (12) of the outer radial end portion (11) of the brake backing plate (3). (See Figure 1 for abbreviations)

A method of refurbishing a steel-shell brake drum that includes superheating a worn-out brake drum until the worn-out brake drum is glowing hot. The worn-out brake drum includes a steel shell and a worn-out, gray-iron layer bonded to an inside surface of the steel shell. The method further includes centrifugal casting additional molten iron to the gray-iron layer to increase the radial thickness of the gray-iron layer.

The built-in brake drum easy to disassemble comprises a brake drum installation seat and a brake friction ring, the brake friction ring is of a circular ring structure, and one end of the brake friction ring is arranged on the brake drum installation seat in a detachable mode. The brake friction ring is of a structure of two semi-circular rings, and the two semi-circular rings are installed on the brake drum installation base in an interference fit mode to form the brake friction ring of a circular ring structure. After-sale replacement and maintenance are facilitated, damage to a bearing locking nut, a hub bearing and a tire bolt caused by disassembly is avoided, and therefore the service life of a hub assembly is prolonged, and especially for a built-in brake drum.

The present invention relates to a brake drum (26), a drum brake (20), and an operating method (100) for a drum brake (20). The brake drum (26) has a braking surface (36) against which, during a braking operation, at least one brake shoe (22) of the drum brake (20), rotatable relative to the brake drum (26), presses radially. Advantageously, a lubricant reservoir (40) is provided for supplying lubricant to the braking surface (36) during the braking operation.

The present invention relates to a brake drum (1) comprising a support pot (3) with a pot base (4) and a pot wall (5), and a cylindrical sleeve (9) which is received in a pot volume (10) of the support pot (3). Essentially, a recess (17) is formed on the support pot (3) between an inner wall surface (12) of the pot wall (5) and an inner bottom surface (16) of the pot base (4), the recess being open towards the pot volume (10). An end face (24) of the cylindrical sleeve (9) facing the inner bottom surface (16) is arranged at an axial distance (15) from the inner bottom surface (16), and a thickening (18) is provided on the pot base (4) extending around the central axis (8). The present invention further relates to a drum brake (2) comprising such a brake drum (1) and to a motor vehicle comprising at least one such drum brake (2).

A brake drum having a roll-formed, steel shell that is axisymmetric about an axis of rotation.The steel shell has an open end of the steel shell and a second end of the steel shell, where the second end of the steel shell is axially opposite the open end of the steel shell. The steel shell further has an integrated squealer band, which is a raised portion of the steel shell that extends radially outward between the open end of the steel shell and the second end of the steel shell. The raised portion extends continuously in a circumferential direction about the steel shell. The raised portion of the steel shell has a concave section whose center of curvature is radially farther from the axis of rotation than the concave section.

The present invention relates to the field of automotive engineering and industrial plant engineering and relates to a method for producing braking elements as well as to braking elements produced in this way. The problem addressed by the present invention is that of describing a method and a braking element which have improved anti-wear and anti-corrosion properties and a high layer thickness of the friction faces and which can be produced quickly and economically. The problem is solved by a method in which at least one layer of a steel semifinished product (2) having perforations is arranged at least on the surface region, provided as a friction surface, of a metal main body (1), and then the layer is connected in an integrally bonded manner to the metal main body by means of a joining process, then an Al-based alloy is arranged in place, and then the braking element is thermally treated. The braking elements according to the invention can be used for example in vehicles, industrial plants or wind turbines.