CN108263980B - Elevator brake adopting double brake system and braking method thereof - Google Patents
Elevator brake adopting double brake system and braking method thereof Download PDFInfo
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- CN108263980B CN108263980B CN201711337964.5A CN201711337964A CN108263980B CN 108263980 B CN108263980 B CN 108263980B CN 201711337964 A CN201711337964 A CN 201711337964A CN 108263980 B CN108263980 B CN 108263980B
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000003068 static effect Effects 0.000 claims abstract description 43
- 230000001360 synchronised effect Effects 0.000 claims abstract description 38
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims 3
- 238000009434 installation Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
- B66D5/08—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect embodying blocks or shoes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/26—Operating devices pneumatic or hydraulic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/30—Operating devices electrical
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The invention discloses an elevator brake adopting a double brake system and a braking method thereof. The safety and stability of the existing elevator brake are poor. The invention comprises a hydraulic end cover, an end cover bolt, a brake arm, a brake coil, a synchronous bolt, an armature, a tongue plate bolt, a tongue plate, a brake shoe friction plate, a manual adjusting bolt, a guide bolt, an adjusting anti-loose spring, a coil groove, a brake spring, a brake static plate, a hydraulic cylinder, a flat washer, a spring washer and a synchronous plate. According to the invention, the braking friction surface on the braking arm is increased to assist the brake shoe friction plate to be contacted with the braking wheel, so that the braking area is increased, and the braking force is increased; the braking friction surface of the braking arm and the arc surface of the brake shoe friction plate on the tongue plate are positioned on the same cylindrical surface, and the braking friction surface and the arc surface of the brake shoe friction plate synchronously move during braking, so that the braking wheel is ensured to be held tightly simultaneously; can realize double braking of the elevator, prevent the elevator from sliding or the elevator from moving with the brake, and improve the braking reliability of the brake.
Description
Technical Field
The invention belongs to the technical field of elevator safety devices, and particularly relates to an elevator brake adopting a double brake system and a braking method thereof.
Background
Currently, elevators are increasingly widely used, so that safety devices are required to secure personal safety. The traditional elevator brake is generally an electromagnetic brake, which consists of a compression spring, a braking electromagnetic mechanism, a braking shoe, a braking wheel, a transmission and adjustment mechanism and the like. The main principle is that the action of the armature is controlled by generating or losing electromagnetic attraction force when the electromagnetic coil is powered on or powered off so as to achieve the purpose of braking. At present, the elevator is widely applied to daily life of people, people gradually begin to pay attention to the safety and comfort of elevator operation, and the failure of the brake can cause the elevator to slide, punch the top or upset the bottom, so that the failure of the brake is necessary to be prevented, and the safety and reliability of the performance of the elevator brake are ensured.
Problems with elevator brakes can be divided into two aspects: 1. electrical problems; 2. mechanical problems.
The electrical appliance problems are mainly that the contact points of the control brake are in poor contact or adhesion, and the brake shoe and the brake wheel are rubbed and worn due to the time-out, so that braking force failure is generated.
The mechanical problems mainly include: the mechanical blocking causes that the brake cannot be switched on or is switched on slowly after the brake is powered off; the braking spring is insufficient in pressure due to long-term use, so that the braking force is insufficient; the armature iron in the brake is installed askew, so that the friction plate is seriously worn, the contact area between the brake wheel and the friction plate is less than 80%, and the braking force is reduced; the problems of insufficient pressure of the brake spring and abrasion of the friction plate are solved, and the brake spring or the friction plate needs to be replaced, so that the disassembly and assembly are complicated; the electromagnetic coil has the phenomenon of remanence, the electromagnetic coil force is larger than the brake spring force of the brake when the elevator is opened, and the brake shoe cannot hold tightly for braking when the elevator arrives at a station, so that the car sliding accident easily occurs. The fact that the brake shoe cannot be held tightly due to the residual magnetism of the electromagnetic coil is a difficult problem that the existing elevator brake cannot overcome.
These problems lead to poor safety and stability of the brake. In order to make the strength of the brake component high, avoid the installation deflection, provide larger braking moment and improve the reliability of the brake at the same time, so developing the elevator brake of a double brake system has important significance for improving the performance and safety of the elevator brake.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an elevator brake adopting a double brake system and a braking method thereof.
The invention is realized by adopting the following technical scheme:
the invention discloses an elevator brake adopting a double brake system, which comprises a hydraulic end cover, an end cover bolt, a brake arm, a brake coil, a synchronous bolt, an armature, a tongue plate bolt, a tongue plate, a brake shoe friction plate, a manual adjusting bolt, a guide bolt, an adjusting anti-loose spring, a coil groove, a brake spring, a brake static plate, a hydraulic cylinder, a flat washer, a spring washer and a synchronous plate, wherein the brake arm is arranged on the hydraulic end cover; two ends of the dynamic and static braking plate are respectively provided with a hydraulic cylinder hole, and hydraulic cylinders are arranged in the two hydraulic cylinder holes; the cylinder body of the hydraulic cylinder is pressed and fixed by the hydraulic end cover; the hydraulic end cover is fixed on the dynamic and static plate through an end cover bolt; the piston rods of the two hydraulic cylinders are respectively fixed with one ends of the two brake arms; the end face of the other end of the brake arm is a braking friction surface with an arc surface; the braking spring is arranged in a first spring mounting hole of the braking moving and static plate, the adjusting anti-loose spring is arranged in a central hole of the braking moving and static plate, and the braking coil is arranged in a coil groove of the braking moving and static plate; the first spring mounting hole, the central hole and the coil groove are all formed in the inner side surface of the braking plate, and the axes of the first spring mounting hole, the central hole and the coil groove are all arranged in parallel; two groups of first spring mounting holes are respectively arranged at two sides of the periphery of the coil groove, and each group is at least provided with two first spring mounting holes; the armature is provided with second spring mounting holes with the same number as the first spring mounting holes; the central axis of each second spring mounting hole is aligned with the central axis of one first spring mounting hole, and the other end of the brake spring arranged in the first spring mounting hole is embedded into the corresponding second spring mounting hole; the thread part of the guide bolt is connected with a guide threaded hole formed in the movable and static plate, and the polished rod part of the guide bolt and the guide hole formed in the armature form a sliding pair; the number of the guide bolts, the guide threaded holes and the guide holes is equal, and at least four guide bolts, guide threaded holes and guide holes are formed; the side surface of the brake arm is provided with a brake arm placement groove, and the end surface of the brake arm is provided with a through hole; one end of each of the two synchronous plates is respectively embedded into a brake arm placement groove of each of the two brake arms and is connected with a fixing bolt penetrating through a corresponding brake arm through hole through threads, so that the synchronous plates are fixed with the brake arms; the other ends of the two synchronous plates are respectively embedded into two synchronous mounting grooves at the two ends of the armature, and the synchronous bolts fixedly connect the synchronous plates with the synchronous mounting grooves corresponding to the armature; the brake shoe friction plate is fixedly connected to the tongue plate, and the tongue plate is fixedly connected with the armature through a tongue plate bolt; the braking friction surfaces of the two braking arms and the arc surface of the brake shoe friction plate are positioned on the same cylindrical surface; the tail part of the manual adjusting bolt passes through the center holes of the brake shoe friction plate, the tongue plate and the armature, and passes through the center holes of the adjusting anti-loose spring and the braking static plate to be connected with the double nuts; a flat washer is arranged between the double nuts and the outer side surface of the braking static plate, and a spring washer is arranged between the double nuts. And a gap is arranged between the armature iron and the inner side surface of the braking static plate in the state that the piston rod of the hydraulic cylinder is completely pushed out.
A set of first spring mounting holes is provided inside the coil slot, the set having two first spring mounting holes symmetrical about a center hole of the stationary and stationary plate.
The first spring mounting hole and the second spring mounting hole are blind holes, and the depth of the second spring mounting hole is smaller than that of the first spring mounting hole.
And a gasket is arranged between the hydraulic end cover and the braking static plate.
Four guide bolts are arranged in a rectangular shape, and the axial direction of each guide bolt is perpendicular to the side face of the armature.
The clearance between the armature and the inner side surface of the braking static plate is 0.35-0.5 mm.
The braking method of the elevator brake adopting the double braking system comprises the following specific steps:
the dynamic and static plate is fixed on a frame of a tractor installed in a machine room. When the elevator is in a normal running state, before the elevator runs, a piston rod of the hydraulic cylinder drives the brake arm to retract, and a braking friction surface of the brake arm is separated from the brake wheel; simultaneously, the brake coil is electrified to generate a magnetic field, so that the armature is attracted to move to one side of the brake static plate along the guide bolt, and the brake shoe friction plate is separated from the brake wheel; after the piston rod of the hydraulic cylinder is completely retracted, the armature iron is attached to the braking static plate, and the elevator starts to run; when the elevator needs to stop, a piston rod of the hydraulic cylinder drives the brake arm to push out, the brake friction surface of the brake arm holds the brake wheel, meanwhile, the brake coil is powered off, and the armature moves to the side deviating from the brake moving and static plate along the guide bolt, so that the brake shoe friction plate holds the brake wheel, the elevator stops, and the separation of the brake friction surface of the brake arm and the brake shoe friction plate holds the brake wheel is synchronous.
When the service time of the brake spring is too long and the braking force does not meet the braking moment requirement, the hydraulic cylinder drives the brake arm to enable the braking friction surface of the brake arm to hold the brake wheel, and simultaneously, the brake shoe friction plate is synchronously driven to hold the brake wheel, so that the elevator is prevented from sliding; when the brake spring is blocked or the brake coil is short-circuited, the brake shoe friction plate cannot be timely separated from the brake wheel, and the brake arm is retracted, and the armature synchronous belt is returned to the initial state through the synchronous plate, so that the belt brake operation accident is prevented.
The invention has the beneficial effects that:
1. the brake friction surface on the brake arm is increased to assist the brake shoe friction plate to contact the brake wheel, namely, the braking area is increased, so that the braking force is increased.
2. Compared with the traditional brake, the brake spring and the hydraulic double-brake system are adopted, and the brake can still work normally when the brake force is insufficient or mechanical blocking is generated after power failure due to insufficient pressure of the brake spring caused by long-term use of the brake spring.
3. The braking friction surface of the braking arm and the arc surface of the brake shoe friction plate on the tongue plate are positioned on the same cylindrical surface, and the braking friction surface and the arc surface of the brake shoe friction plate synchronously move during braking, so that the braking wheel is ensured to be held tightly simultaneously.
4. The guide bolt and the guide hole can avoid serious abrasion of the friction plate caused by the inclination of the armature installation.
Drawings
FIG. 1 is an exploded view of the overall structure of the present invention;
FIG. 2 is a perspective view of the overall structure of the present invention;
FIG. 3 is a side view of the overall structure of the present invention;
fig. 4-1 is a perspective view of the armature of the present invention;
fig. 4-2 is a rear view of the armature of the present invention;
FIG. 5 is a perspective view of the structure of the dynamic and static plate according to the present invention;
fig. 6 is an assembled view of the brake arm and the synchronization plate of the present invention.
In the figure: 1. the brake device comprises a gasket, 2, a hydraulic end cover, 3, an end cover bolt, 4, a brake arm, 4-1, a through hole, 5, a brake coil, 6, a synchronous bolt, 7, an armature, 7-1, a synchronous mounting groove, 7-2, a guide hole, 7-3, a second spring mounting hole, 8, a tongue plate bolt, 9, a tongue plate, 10, a brake shoe friction plate, 11, a manual adjusting bolt, 12, a guide bolt, 13, an adjusting anti-loose spring, 14, a coil groove, 15, a brake spring, 16, a brake static plate, 16-1, a hydraulic cylinder hole, 16-2, a guide threaded hole, 16-3, a first spring mounting hole, 17, a hydraulic cylinder, 18, a plain washer, 19, a spring washer, 20 and a synchronous plate.
Detailed Description
The invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1, 2, 3, 4-1, 4-2, 5 and 6, an elevator brake using a double brake system includes a gasket 1, a hydraulic end cap 2, an end cap bolt 3, a brake arm 4, a brake coil 5, a synchronizing bolt 6, an armature 7, a tongue bolt 8, a tongue 9, a brake shoe friction plate 10, a manual adjusting bolt 11, a guide bolt 12, an adjusting check spring 13, a coil groove 14, a brake spring 15, a brake static plate 16, a hydraulic cylinder 17, a flat washer 18, a spring washer 19 and a synchronizing plate 20; the braking static plate 16 is fixed on a frame for installing a traction machine in a machine room, two ends of the braking static plate 16 are respectively provided with a hydraulic cylinder hole 16-1, and hydraulic cylinders 17 are arranged in the two hydraulic cylinder holes 16-1; the cylinder body of the hydraulic cylinder is pressed and fixed by the hydraulic end cover 2, and a gasket 1 is arranged between the hydraulic end cover 2 and the braking static plate 16; the hydraulic end cover 2 is fixed on the braking plate 16 through an end cover bolt 3; the piston rods of the two hydraulic cylinders are respectively fixed with one ends of the two brake arms 4; the end surface of the other end of the brake arm 4 is a braking friction surface with an arc surface to assist the brake shoe friction plate to contact with the brake wheel; the braking spring 15 is arranged in the first spring mounting hole 16-3 of the braking plate 16, the adjusting anti-loose spring 13 is arranged in the central hole of the braking plate, and the braking coil 5 is arranged in the coil groove 14 of the braking plate; the first spring mounting hole 16-3, the central hole and the coil groove 14 are all arranged on the inner side surface of the braking plate, and the axes of the first spring mounting hole 16-3, the central hole and the coil groove 14 are all arranged in parallel; the number of the first spring mounting holes 16-3 is 8; the armature 7 is provided with second spring mounting holes 7-3 which are equal to the first spring mounting holes 16-3 in number; the central axis of each second spring mounting hole 7-3 is aligned with the central axis of one first spring mounting hole 16-3, and the other end of the brake spring 15 disposed in the first spring mounting hole 16-3 is inserted into the corresponding second spring mounting hole 7-3; the thread part of the guide bolt 12 is connected with a guide threaded hole 16-2 formed in the movable and static plate 16, and the polished rod part of the guide bolt 12 and the guide hole 7-2 formed in the armature 7 form a sliding pair; the number of the guide bolts 12, the guide threaded holes 16-2 and the guide holes 7-2 is equal, and 4 guide bolts are adopted in the embodiment; the side surface of the brake arm is provided with a brake arm placement groove, and the end surface is provided with a through hole 4-1; one end of each of the two synchronizing plates 20 is respectively embedded into a brake arm placement groove of each of the two brake arms and is connected with a fixing bolt penetrating through a corresponding brake arm through hole 4-1 through threads, so that the synchronizing plates 20 are fixed with the brake arms 4; the other ends of the two synchronous plates 20 are respectively embedded into two synchronous placing grooves 7-1 at the two ends of the armature 7, and the synchronous bolts 6 fixedly connect the synchronous plates with the corresponding synchronous placing grooves of the armature 7; in this way, the brake arm 4, the synchronizing plate 20 and the armature 7 have the same movement pattern; the brake shoe friction plate 10 is fixedly connected to the tongue plate 9, and the tongue plate 9 is fixedly connected with the armature 7 through a tongue plate bolt 8; the braking friction surfaces of the two braking arms 4 and the arc surface of the brake shoe friction plate are positioned on the same cylindrical surface; the tail part of the manual adjusting bolt 11 passes through the center holes of the brake shoe friction plate, the tongue plate 9 and the armature 7, and passes through the center holes of the adjusting anti-loose spring 13 and the braking and moving plate 16 to be connected with the double nuts; in order to prevent loosening of the manual adjustment bolt 11, a flat washer 18 is provided between the double nut and the outer side surface of the brake static plate, and a spring washer 19 is provided between the two nuts of the double nut.
As shown in fig. 3, in the initial installation position, that is, in the state where the piston rod of the hydraulic cylinder 17 is completely pushed out, a gap of 0.35 to 0.5mm is provided between the armature 7 and the inner side surface of the stationary brake plate 16.
The braking method of the elevator brake adopting the double braking system comprises the following specific steps:
when the elevator is in a normal running state, before the elevator runs, a piston rod of the hydraulic cylinder 17 drives the brake arm 4 to retract, and a braking friction surface of the brake arm is separated from the brake wheel; simultaneously, the brake coil 5 is electrified to generate a magnetic field, so that the armature 7 is attracted to move to the side of the brake static plate 16 along the guide bolt 12, and the brake shoe friction plate 10 is separated from the brake wheel, and as the armature 7 and the brake arm are fixed together through the synchronous plate 20, the process of separating the brake friction surface of the brake arm and the brake shoe friction plate from the brake wheel is synchronous; after the piston rod of the hydraulic cylinder 17 is completely retracted, the armature 7 is attached to the braking static plate 16, and the elevator starts to run; when the elevator needs to stop, a piston rod of the hydraulic cylinder 17 drives the brake arm to push out, the brake friction surface of the brake arm holds the brake wheel, meanwhile, the brake coil 5 is powered off, the armature 7 moves along the guide bolt 12 to the side deviating from the brake moving and static plate 16, so that the brake shoe friction plate 10 holds the brake wheel, the elevator stops, and the separation of the brake friction surface of the brake arm and the brake shoe friction plate holding the brake wheel is synchronous, thereby achieving the effect of double braking.
When the elevator fails, the invention can prevent the elevator from sliding or the elevator from moving with the brake, and the invention is as follows: when the service time of the brake spring 15 is too long and the braking force does not meet the braking moment requirement, the situation that an elevator slips can occur when a common elevator brake is adopted, and by adopting the invention, the hydraulic cylinder can drive the brake arm 4 to enable the braking friction surface of the brake arm to hug the brake wheel, and simultaneously, the brake shoe friction plate is synchronously driven to hug the brake wheel, so that the elevator is prevented from slipping; when the brake spring 15 is blocked or the brake coil 5 is short-circuited, the brake shoe friction plate 10 can not be separated from the brake wheel in time, the elevator adopting the common elevator brake can perform the operation of the belt brake, and the brake arm 4 is retracted and simultaneously the armature 7 is synchronously brought back to the initial state through the synchronous plate 20, thereby preventing the accident of the operation of the belt brake.
Claims (5)
1. The utility model provides an adopt double brake system's elevator stopper, includes brake coil, armature, tongue plate bolt, tongue plate, brake shoe friction disc, manual adjusting bolt, adjustment locking spring, coil groove, brake spring and braking quiet board, its characterized in that: the hydraulic end cover is characterized by further comprising a hydraulic end cover, an end cover bolt, a brake arm, a synchronous bolt, a guide bolt, a hydraulic cylinder, a flat washer, a spring washer and a synchronous plate; two ends of the dynamic and static braking plate are respectively provided with a hydraulic cylinder hole, and hydraulic cylinders are arranged in the two hydraulic cylinder holes; the cylinder body of the hydraulic cylinder is pressed and fixed by the hydraulic end cover; the hydraulic end cover is fixed on the dynamic and static plate through an end cover bolt; the piston rods of the two hydraulic cylinders are respectively fixed with one ends of the two brake arms; the end face of the other end of the brake arm is a braking friction surface with an arc surface; the braking spring is arranged in a first spring mounting hole of the braking moving and static plate, the adjusting anti-loose spring is arranged in a central hole of the braking moving and static plate, and the braking coil is arranged in a coil groove of the braking moving and static plate; the first spring mounting hole, the central hole and the coil groove are all formed in the inner side surface of the braking plate, and the axes of the first spring mounting hole, the central hole and the coil groove are all arranged in parallel; two groups of first spring mounting holes are respectively arranged at two sides of the periphery of the coil groove, and each group is at least provided with two first spring mounting holes; the armature is provided with second spring mounting holes with the same number as the first spring mounting holes; the central axis of each second spring mounting hole is aligned with the central axis of one first spring mounting hole, and the other end of the brake spring arranged in the first spring mounting hole is embedded into the corresponding second spring mounting hole; the thread part of the guide bolt is connected with a guide threaded hole formed in the movable and static plate, and the polished rod part of the guide bolt and the guide hole formed in the armature form a sliding pair; the number of the guide bolts, the guide threaded holes and the guide holes is equal, and at least four guide bolts, guide threaded holes and guide holes are formed; the side surface of the brake arm is provided with a brake arm placement groove, and the end surface of the brake arm is provided with a through hole; one end of each of the two synchronous plates is respectively embedded into a brake arm placement groove of each of the two brake arms and is connected with a fixing bolt penetrating through a corresponding brake arm through hole through threads, so that the synchronous plates are fixed with the brake arms; the other ends of the two synchronous plates are respectively embedded into two synchronous mounting grooves at the two ends of the armature, and the synchronous bolts fixedly connect the synchronous plates with the synchronous mounting grooves corresponding to the armature; the brake shoe friction plate is fixedly connected to the tongue plate, and the tongue plate is fixedly connected with the armature through a tongue plate bolt; the braking friction surfaces of the two braking arms and the arc surface of the brake shoe friction plate are positioned on the same cylindrical surface; the tail part of the manual adjusting bolt passes through the center holes of the brake shoe friction plate, the tongue plate and the armature, and passes through the center holes of the adjusting anti-loose spring and the braking static plate to be connected with the double nuts; a flat washer is arranged between the double nuts and the outer side surface of the braking static plate, and a spring washer is arranged between the two nuts of the double nuts; a gap is arranged between the armature iron and the inner side surface of the braking static plate in the state that the piston rod of the hydraulic cylinder is completely pushed out;
the first spring mounting hole and the second spring mounting hole are blind holes, and the depth of the second spring mounting hole is smaller than that of the first spring mounting hole;
and a gasket is arranged between the hydraulic end cover and the braking static plate.
2. An elevator brake employing a dual brake system according to claim 1, characterized in that: a set of first spring mounting holes is provided inside the coil slot, the set having two first spring mounting holes symmetrical about a center hole of the stationary and stationary plate.
3. An elevator brake employing a dual brake system according to claim 1, characterized in that: four guide bolts are arranged in a rectangular shape, and the axial direction of each guide bolt is perpendicular to the side face of the armature.
4. An elevator brake employing a dual brake system according to claim 1, characterized in that: the clearance between the armature and the inner side surface of the braking static plate is 0.35-0.5 mm.
5. The braking method of an elevator brake using a double brake system according to any one of claims 1 to 4, characterized in that: the method comprises the following steps:
fixing the dynamic and static plate on a frame of a tractor installed in a machine room; when the elevator is in a normal running state, before the elevator runs, a piston rod of the hydraulic cylinder drives the brake arm to retract, and a braking friction surface of the brake arm is separated from the brake wheel; simultaneously, the brake coil is electrified to generate a magnetic field, so that the armature is attracted to move to one side of the brake static plate along the guide bolt, and the brake shoe friction plate is separated from the brake wheel; after the piston rod of the hydraulic cylinder is completely retracted, the armature iron is attached to the braking static plate, and the elevator starts to run; when the elevator needs to stop, a piston rod of the hydraulic cylinder drives the brake arm to push out, a braking friction surface of the brake arm holds the brake wheel, meanwhile, the brake coil is powered off, and the armature moves to the side away from the brake moving and static plate along the guide bolt, so that the brake shoe friction plate holds the brake wheel, the elevator stops, and the separation of the braking friction surface of the brake arm and the brake shoe friction plate holds the brake wheel is synchronous;
when the service time of the brake spring is too long and the braking force does not meet the braking moment requirement, the hydraulic cylinder drives the brake arm to enable the braking friction surface of the brake arm to hold the brake wheel, and simultaneously, the brake shoe friction plate is synchronously driven to hold the brake wheel, so that the elevator is prevented from sliding; when the brake spring is blocked or the brake coil is short-circuited, the brake shoe friction plate cannot be timely separated from the brake wheel, and the brake arm is retracted, and the armature synchronous belt is returned to the initial state through the synchronous plate, so that the belt brake operation accident is prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711337964.5A CN108263980B (en) | 2017-12-14 | 2017-12-14 | Elevator brake adopting double brake system and braking method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711337964.5A CN108263980B (en) | 2017-12-14 | 2017-12-14 | Elevator brake adopting double brake system and braking method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108263980A CN108263980A (en) | 2018-07-10 |
| CN108263980B true CN108263980B (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711337964.5A Active CN108263980B (en) | 2017-12-14 | 2017-12-14 | Elevator brake adopting double brake system and braking method thereof |
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| CN (1) | CN108263980B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109179138B (en) * | 2018-10-19 | 2023-08-01 | 浙江理工大学 | Elevator brake with emergency braking system and operating method thereof |
| JP6937353B2 (en) * | 2019-12-09 | 2021-09-22 | 東芝エレベータ株式会社 | Elevator dual brake device and double brake device renewal method |
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| CN102853001A (en) * | 2012-10-10 | 2013-01-02 | 江苏大学 | Electromagnetic hydraulic composite brake employing electromagnetic lead-in mechanism |
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| CN106838067A (en) * | 2016-12-01 | 2017-06-13 | 重庆速腾机械制造有限公司 | A kind of electromagnetism pneumatic brake with quick response function |
| CN207792563U (en) * | 2017-12-14 | 2018-08-31 | 浙江理工大学 | A kind of elevator brake using double brake system |
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| US10458497B2 (en) * | 2015-06-29 | 2019-10-29 | Goodrich Corporation | Hybrid electric and hydraulic brake system |
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| CN108263980A (en) | 2018-07-10 |
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