WO2016082270A1

WO2016082270A1 - Disc brake

Info

Publication number: WO2016082270A1
Application number: PCT/CN2014/095073
Authority: WO
Inventors: 廖世全; 王晓; 张重胜
Original assignee: 成都瑞迪机械实业有限公司
Priority date: 2014-11-26
Filing date: 2014-12-26
Publication date: 2016-06-02
Also published as: CN104370238A; JP3213497U

Abstract

An elevator part, particularly a disc brake, comprising a slotted disc (3), an armature, a torsion spring (1) and winding coils (2), wherein the winding coils (2) are installed in the slotted disc (3), the torsion spring (1) is installed between the slotted disc (3) and the armature, the armature is formed by at least two sub-armatures (4), and each sub-armature (4) is matched with the slotted disc (3) and capable of moving along the axial direction of the slotted disc (3); and the number of the winding coils (2) is greater than or equal to that of the sub-armatures (4), and the winding coils (2) are uniformly distributed on the slotted disc (3).

Description

Disc brakes

Technical field

The invention relates to an elevator component, in particular a disc brake.

Background technique

The conventional disc electromagnetic brake belongs to a single magnetic pole, single loop structure. The single magnetic pole is only one coil winding installed in the electromagnetic brake. The single circuit is an integral disc armature, and a power supply loop is used to control the power loss of the coil winding. In today's fierce market competition, customers have increasingly improved the cost performance of products. The traditional single-coil structure of disc-type electromagnetic brakes needs to increase the electromagnetic force of the windings, and must increase the volume of the winding coil material and the brake itself, so that the overall cost will rise. .

In terms of safety, the elevator requires that the brake components of the brakes should be divided into two assemblies. If one group does not work, the other group can still ensure the safe braking of the elevator. Thus, the conventional single-circuit disc electromagnetic brake with only one disc armature Only two brakes can be placed to meet the requirements, which undoubtedly increases the cost of the brakes.

Conventional electromagnetic brakes make the torque springs that generate torque evenly distributed in the inner or outer circumference of the brake, but the electromagnetic force generated by the multi-coil double-half armature structure is uneven, which causes the brake to move multiple times. Closing and disengaging increases the operating time of the brakes and increases the operating noise of the brakes.

At the same time, when the electromagnetic brake is braked, a large positive pressure is applied to the surface of the object in contact with the friction plate. Such mechanical parts that come into contact with each other produce large shocks and vibrations, which will generate noise that has a great influence on human health. Similarly, when the electromagnetic brake is changed from the braking state to the absorbing state, a larger electromagnetic attraction is required to pull the armature back due to the large positive pressure, which is accompanied by a large pullback vibration and suction noise. .

Summary of the invention

The technical problem to be solved by the present invention is to provide a disc brake that occupies a smaller volume.

The disc brake used in the present invention solves the technical problem, comprising a slotted disc, an armature, a torsion spring and a winding coil, the winding coil being mounted in a slotted disk, the torsion spring being mounted between the slotted disc and the armature, The armature is composed of at least two sub-armature irons which are fitted with the slotted disk and can move axially along the slotted disk; the number of winding coils is not less than the number of sub-armatures, and all the winding coils are evenly distributed on the slotted disk .

Further, all of the winding coils are distributed in a circular shape.

Further, the sub-armature iron is provided with two, and the sub-armature iron is semi-circular.

Further, each sub-armature corresponds to at least two winding coils.

Further, with reference to the boundary line of the two sub-armatures, the torsion springs are distributed on the groove plate in the following manner: the closer to the boundary line, the stronger the elastic force distribution.

Further, further comprising an adjustable elastic damping device comprising a damping element and an adjustment rod, the damping element being disposed between the groove plate and the armature, the adjustment rod being disposed on the armature Up and down the damping element by axial movement.

Further, a mounting groove is disposed on one side of the armature toward the slot plate, and a side of the armature facing away from the slot plate is provided with a threaded mounting hole, and the threaded mounting hole communicates with the mounting slot, the damping original Disposed within the mounting groove, the adjustment rod is threadedly mounted on the threaded mounting hole.

Further, further comprising a lateral rod disposed on the armature and axially movable, the axis of the lateral rod being perpendicular to an axis of the adjustment rod, the lateral rod and the The adjustment rods cooperate with each other through a vertical transmission mechanism.

Further, the adjustable elastic damping device comprises a damping original and an adjusting rod, the damping original is disposed between the electromagnetic groove plate and the armature, and the adjusting rod is disposed on the electromagnetic groove plate and can pass through the shaft Tightening the original to the motion.

Further, the adjustment lever is a hydraulic adjustment lever.

The invention has the advantages that the structure of the multi-petal armature can be used to replace the previous two elevators with one brake, which reduces the installation volume of the entire brake and reduces the brake input. , component costs are reduced. In addition to the multi-petal armature, multiple winding coils are used to generate the same amount of electromagnetic force, which allows the volume to be reduced while still meeting the requirements of use. By setting the uneven distribution of the torsion spring force to achieve the consistency of the brake action, the brake noise is reduced and the brake operating time is shortened.

DRAWINGS

Figure 1 is a schematic view of the present invention;

Figure 2 is a half cross-sectional view of the present invention;

Figure 3 is an enlarged view of A of Figure 2;

Parts, parts and numbers in the figure: Torque spring 1, winding coil 2, slotted disc 3, sub-armature 4, rotor 5, adjustable elastic damping device 6, elevator table 7, lead wire 8, damping element 9, hollow screw 10. Mounting bolt 11 and adjusting rod 12.

detailed description

The invention will now be further described with reference to the accompanying drawings.

As shown in Fig. 1, the present invention comprises a grooved disk 3, an armature, a torsion spring 1 and a winding coil 2, the winding coil 2 being mounted in a grooved disk 3, the torsion spring 1 being mounted between the grooved plate 3 and the armature, The armature is composed of at least two sub-armatures 4 which are fitted together with the slotted disk 3 and can move axially along the slotted disk 3; the number of winding coils 2 is not less than the number of sub-armatures 4, and all The winding coils 2 are evenly distributed on the grooved disk 3. 2 is a cross-sectional view of the present invention mounted to the elevator table 7, which is mounted to the elevator table 7 by mounting bolts 11 and hollow screws 10, wherein the rotor 5 is mounted between the armature and the elevator table 7. When the winding coil 2 on the slotted disk 3 is energized, the electromagnetic force causes the armature to move in the direction of the slotted disk 3, thereby coming out of contact with the rotor 5, which is that the rotor 5 is no longer subject to braking; when the winding coil 2 is de-energized, the torque The spring force of the spring 1 causes the armature to rest on the rotor 5, thereby braking the rotor 5. Since the armature of the present invention is composed of at least two sub-armatures 4, at the same time, the trough disc 3 is provided with a plurality of winding coils 2, and the plurality of winding coils 2 can be electrically connected by one or more sets of lead wires 8, The entire disc brake can still operate normally after a part of the sub-armature 4 and the winding coil 2 fail. The sub-armature 4 of the disc brake corresponds to at least one winding coil 2, so even if only one set of sub-armature 4 and winding coil 2 remain Normal, it will still work. The multi-pole coil winding structure of the present invention generates an electromagnetic force of the same magnitude, and the volume of the entire brake becomes small to achieve cost reduction. At the same time, the present invention has a plurality of brake sub-arms 4, so that one disc brake is equivalent to a conventional plurality of disc brakes, the cost is naturally reduced, and the installation space is also reduced.

Generally, as shown in Fig. 1, all the winding coils 2 are distributed in a circular shape, so that the requirements of the circular armature and the grooved disk can be satisfied, so that the electromagnetic force distribution is relatively uniform. Of course, the shape of the entire disc brake can be square, elliptical or other shapes. Similarly, the armature can also be square, elliptical or other shapes. In this case, the distribution of the winding coil 2 can be adaptively distributed according to a square or an ellipse. In order to achieve a better distribution effect.

For optimum cost performance, as shown in Figure 1, the sub-armature 4 is provided with two, and the sub-armature 4 is semi-circular. The disc brake with two sub-armatures 4 can be equivalent to the conventional two disc brakes. This structure is simpler and lower in cost, and the two sub-armatures 4 that work independently can also provide a good safety effect. At the same time, each sub-armature 4 corresponds to at least two winding coils 2, so that each sub-armature 4 can form a multi-winding coil 2 structure, thereby obtaining reliable performance.

Since the present invention adopts the structure of the multi-winding coil 2 and the multi-subarm armature 4, the electromagnetic force received by the sub-armature 4 is non-uniform, that is, the magnetic field generated by the winding coil 2 is uneven due to the structure of the two sides of the armature. The strongest part of the magnetic field is on the boundary line between the armatures. The farther the boundary line is, the smaller the electromagnetic force is. This will cause the movement of the sub-armature 4 to be inconsistent and cause a lot of noise. In order to change the above situation, as shown in Figure 1, Two sub-arms of iron 4 The boundary line is a reference, and the torsion spring 1 is distributed on the grooved plate 3 in such a manner that the closer the boundary line is, the stronger the elastic force distribution is. The elastic distribution surface has a distribution structure of the torsion spring 1, and the torsion spring 1 near the boundary line may have a strong elastic force, or the torsion spring 1 near the boundary line may be distributed more, so that when the winding coil 2 is operated It will make the whole sub-armature 4 face force average, so that the movement of the sub-armature 4 plane is consistent, which can reduce the noise and increase the service life of the sub-armature 4.

In order to reduce the noise generated by the braking process, as shown in Figures 2 and 3, an adjustable elastic damping device 6 is also included, which includes a damping element 9 and an adjustment rod 12, the damping element 9 being disposed in Between the grooved disc 3 and the armature, the adjusting rod 12 is arranged on the armature and can be axially moved to tighten the damping element 9. During the operation of the disc brake, the magnetic force generated by the winding coil 2 is instantaneously generated, and finally disappears instantaneously. Therefore, when generated, the sub-armature 4 is subjected to a large force to hit the slotted disc 3, generating a large noise. Similarly, when the magnetic force disappears, the sub-armature 4 is suddenly pressed against the rotor 5 by the large force of the torsion spring 1, so that the sub-armature 4 hits the rotor 5 to generate a large noise. When an adjustable elastic damping device 6 is added between the armature and the slotted disc 3, the adjustable elastic damping device 6 is pre-tensioned without affecting the braking and pulling voltage of the brake to apply a certain pre-tension between the armature and the slotted disc 3. The tightening force can adjust the elastic damping device 6 in the pre-tightening state in the range of the armature movement; after the energization, during the entire suction process, as the armature gradually moves toward the electromagnetic component formed by the winding coil 2, the electromagnetic force becomes larger and larger. The stronger the damping provided by the adjustable elastic damping device 6 is, the buffering effect is obtained, and the large vibration caused by the rigid contact between the armature and the slotted disc 3 is avoided, thereby achieving the purpose of noise reduction, and when the power is off Since the adjustable elastic damping device 6 also generates great damping in the armature and the grooved disc 3, and the friction plate of the rotor 5 itself is a non-metallic material, the two can absorb the collision of the armature with the grooved disk 3, the rotor 5 and the armature repeatedly. The vibration generated in the light, so as to achieve the purpose of reducing noise. When the whole system is in use, the adjustable elastic damping device 6 will be deformed and the like over time, so that the damping provided by the adjustable elastic damping device 6 becomes weaker and weaker. Buffering between the armature and the slotted disc 3, so that the noise is gradually increased, at this time, the pre-tightening degree of the adjustable elastic damping device 6 is adjusted, so that the adjustable elastic damping device 6 can provide sufficient damping, the present invention Mainly when the whole system is working, we do not need to disassemble the brakes, and directly adjust the adjustable elastic damping device 6 to increase the damping of the adjustable elastic damping device 6 to reduce the noise. Therefore, the entire adjustment process can be conveniently implemented without wasting a lot of manpower, material resources and financial resources, and does not need to bring great convenience to the user, and can be completed in a short time.

The adjustable elastic damping device 6 can be realized in the following manner: As shown in FIG. 3, the adjustable elastic damping device 6 includes a damping original 9 and an adjusting rod 12, and the damping original 9 is disposed on the grooved plate 3 and the armature The adjusting rod 12 is disposed on the armature and is axially movable to tighten the damping element 9. The axial movement of the adjusting rod 12 can be used to tighten the damping element 9, so that the pre-tightening force of the damping element 9 is achieved.

As a first mounting manner of the damping element 9 and the adjusting rod 12, as shown in FIG. 1, the armature is provided with a mounting groove on one side of the slot plate 3, and the armature is provided with a thread on one side of the slot plate 3 A mounting hole is communicated to the mounting groove, the damping element 9 is disposed in the mounting groove, and the adjustment rod 12 is threadedly mounted on the threaded mounting hole. When it is necessary to adjust the pre-tightening force of the damping element 9, the adjusting rod 12 is directly rotated on the armature, so that the adjusting rod 12 is tightly damped to the original member 9, thereby achieving the purpose of improving the pre-tightening force. The advantage of this method is that the adjustment of the mounting structure of the damping element 9 and the adjusting rod 12 is relatively simple, the manufacturing cost is low, the reliability is high, and the reliable state can be maintained in long-term use.

In order to protect the damping element 9, as shown in FIG. 3, a spacer is also provided, which is disposed between the damping element 9 and the adjustment rod 12. The spacer can act to uniformly apply the preload force applied by the adjusting rod 12 to the damping element 9. The diameter of the spacer is preferably the same as that of the damping element 9, and the spacer is made of a hard material such as stainless steel.

In order to assist in providing the preload, a pretensioning spring is also provided, which is sleeved on the adjusting rod 12, which is in contact with the damping element 9 and is in a compressed state. At this time, both the pre-tensioning spring and the adjusting rod 12 provide a pre-tightening force. When the damping element 9 is weakened, since the adjusting rod 12 itself is rigid, the pre-tightening force provided by it is drastically reduced, and then the pre-tensioning spring can be With its own elasticity, it still acts on the damper element 9, and the pre-tensioning force is continuously provided, so that the pre-tightening force of the damper element 9 is not drastically reduced, and the damping is drastically reduced. Thus, even if the damping element 9 is weakened, the pre-tensioning spring can still provide a pre-tightening force, which reduces noise to a certain extent, avoids sudden noise increase, and alleviates the blank period before maintenance. When the maintenance personnel finds that the noise is increased, the adjusting rod 12 can be tightened on the damping original 9 according to the foregoing method, so that the anti-noise function is completely restored.

The adjustment lever 12 can employ a hydraulic adjustment lever as conditions permit. At this time, the adjusting rod 12 can press the damping original 9 by hydraulic pressure, and the oil pressure control system can directly operate the pressure of the adjusting rod 12 to avoid the operation of the inside of the elevator block brake. However, this method is costly and maintenance is complicated.

The pressure control of the adjustment rod 12 can also be carried out from the side, for example in the following manner: an additional lateral rod is mounted, which is arranged on the armature and is axially movable, the axis of the lateral rod The axis of the adjustment rod 12 is perpendicular, and the lateral rod and the adjustment rod 12 are coupled to each other by a vertical transmission mechanism. The vertical transmission mechanism can be realized by the gear set, so that it is not necessary to directly operate the adjustment rod 12, but the lateral direction lever is rotated on the side, so that the gear set drives the operation rod 9 to move axially, which is suitable for the operation space on the side. To the situation.

As a second mounting method of the present invention, the adjustable elastic damping device 6 includes a damping original 9 and an adjustment lever 12, the damping original 9 is disposed between the slotted disk 3 and the armature, and the adjustment lever 12 is disposed On the groove plate 3 and axially movable to tighten the damping element 9. Unlike the first type of mounting, the adjustment lever 12 is mounted on the slotted disk 3.

In addition to the above embodiments, the adjustable elastic damping device 6 can also be implemented by using a cylinder by adjusting the air pressure. To control the damping size.

Claims

a disc brake comprising a slotted disc (3), an armature, a torsion spring (1) and a winding coil (2), the winding coil (2) being mounted in a slotted disk (3), the torsion spring (1) being mounted on Between the trough disk (3) and the armature, the armature is composed of at least two sub-armatures (4), which are mounted together with the trough disk (3) and can be along the trough disk (3) Axial movement; the number of winding coils (2) is not less than the number of sub-armatures (4), and all winding coils (2) are evenly distributed over the slotted disk (3).
A disc brake according to claim 1, characterized in that all winding coils (2) are distributed in a circular shape.
A disc brake according to claim 2, characterized in that the sub-armature (4) is provided with two and the sub-armature (4) is semi-circular.
A disc brake according to claim 3, characterized in that each sub-armature (4) corresponds to at least two winding coils (2).
A disc brake according to claim 3, characterized in that the torque spring (1) is distributed on the grooved disk (3) in the following manner with reference to the boundary line of the two sub-armatures (4): the closer to the boundary line The stronger the elastic distribution.
A disc brake according to any one of claims 1 to 5, further comprising an adjustable elastic damping device (6) comprising a damping element (9) and an adjustment a rod (12), the damping element (9) is disposed between the grooved disc (3) and the armature, the adjusting rod (12) is disposed on the armature and can be axially moved to tighten the damping original (9).
A disc brake according to claim 6, wherein said armature is provided with a mounting groove on one side of the slotted disk (3), and said armature is provided with a threaded mounting hole on one side of the slotted disk (3). The threaded mounting hole communicates with the mounting groove, the damping element (9) is disposed in the mounting groove, and the adjusting rod (12) is threadedly mounted on the threaded mounting hole.
A disc brake according to claim 6 further comprising a lateral rod disposed on said armature and axially movable, said axis of said lateral rod and said adjustment rod The axis of (12) is vertical, and the lateral rod and the adjustment rod (12) are coupled to each other by a vertical transmission mechanism.
A disc brake according to claim 6, wherein said adjustable elastic damping means (6) comprises a damping element (9) and an adjusting rod (12), said damping element (9) being disposed in said groove Between the disc (3) and the armature, the adjusting rod (12) is arranged on the groove plate (3) and can be topped by axial movement Tightly dampen the original (9).
A disc brake according to claim 6, wherein said adjustment lever (12) is a hydraulic adjustment lever.