Disc brake with position self-adaptive brake disc

Abstract

The invention provides a brake disc position self-adaptive disc brake, and belongs to the technical field of brakes, the brake disc position self-adaptive disc brake comprises: a seat body assembly, which comprises a first brake seat and a second brake seat, and the second brake seat is provided with a movable brake block; the brake assembly comprises a coupling shaft and a brake disc; and the self-adaptive assembly comprises a first permanent magnet block, a second permanent magnet block and a third permanent magnet block. The brake device has the beneficial effects that when the brake block gets close to the first brake seat, the magnetic force between the first permanent magnet block and the second permanent magnet block and the magnetic force between the second permanent magnet block and the third permanent magnet block are overcome, the first brake seat makes contact with the brake block, the brake block makes contact with the brake disc, and braking is conducted; when the brake block is far away from the first brake seat, under the combined action of the magnetic force between the first permanent magnet and the second permanent magnet and the magnetic force between the second permanent magnet and the third permanent magnet, the brake disc is far away from the first brake seat and the brake block, and therefore friction and noise cannot be generated in the non-brake state.

Description

Technical Field

[0001] The invention belongs to the technical field of brakes and relates to a disc brake with self-adaptive brake disc position. Background Art

[0002] In the existing disc brake, the yoke is fixedly connected to the mechanism brake part, and the brake disc is connected to the connecting shaft by means of splines or the like, and can only move freely in the axial direction. Because there are two sets of friction pairs, namely, one side of the brake disc and the mechanism brake part fixed thereto and the other side of the brake disc and the armature, the braking force of the brake can be doubled, the cost can be reduced, and the size of the brake mechanism can be reduced, so it is adopted by various industries such as elevators. When the coil loses power, the armature presses the braking surface under the action of the spring to generate a braking torque; when the coil is energized and the armature is attracted, the brake is released, and the brake disc can rotate with the connecting shaft that is matched with it through a clearance, and the braking torque disappears.

[0003] However, since the brake disc has no positioning device on the spline connection shaft, it is easy to move axially under the action of disturbance, and it is easy to contact the brake parts of the mechanism or the armature, thereby causing friction, generating noise, accelerating wear, and reducing the performance and life of the brake, leaving much room for improvement. Summary of the invention

[0004] The purpose of the present invention is to address the above problems in the prior art and to provide a disc brake with self-adaptive brake disc position.

[0005] The object of the present invention can be achieved by the following technical solution: A disc brake with self-adaptive brake disc position, comprising:

[0006] A seat assembly, comprising a first brake seat and a second brake seat, wherein the first brake seat is relatively fixed to the second brake seat, and the second brake seat is provided with a movable brake block, and the brake block can be moved close to or away from the first brake seat;

[0007] A brake assembly, comprising a coupling shaft and a brake disc, wherein the coupling shaft is rotatably connected to the first brake seat, the brake disc is located between the first brake seat and the brake block, and the brake disc is connected to the coupling shaft and can move along the axial direction of the coupling shaft;

[0008] An adaptive component includes a first permanent magnet block, a second permanent magnet block and a third permanent magnet block, wherein the first permanent magnet block is connected to the first brake seat, the second permanent magnet block is connected to the brake disc, the third permanent magnet block is connected to the brake block, the first permanent magnet block and the second permanent magnet block are mutually exclusive, and the second permanent magnet block and the third permanent magnet block are mutually exclusive.

[0009] In the above-mentioned disc brake with adaptive brake disc position, the polarities of the first permanent magnet block, the second permanent magnet block and the third permanent magnet block are all distributed along the axial direction of the connecting shaft, the polarity of the first permanent magnet block close to the second permanent magnet block is the same as the polarity of the second permanent magnet block close to the first permanent magnet block, and the polarity of the second permanent magnet block close to the third permanent magnet block is the same as the polarity of the third permanent magnet block close to the second permanent magnet block.

[0010] In the above-mentioned disc brake with adaptive brake disc position, the number of the first permanent magnet blocks is the same as that of the second permanent magnet blocks, and the first permanent magnet blocks and the second permanent magnet blocks are distributed in a mirror-symmetrical manner; the number of the second permanent magnet blocks and the third permanent magnet blocks is the same, and the second permanent magnet blocks and the third permanent magnet blocks are distributed in a mirror-symmetrical manner.

[0011] In the above-mentioned disc brake with adaptive brake disc position, the number of the first permanent magnet block, the second permanent magnet block and the third permanent magnet block is at least two, each of the first permanent magnet blocks is distributed around the axis center of the connecting shaft, each of the second permanent magnet blocks is distributed around the axis center of the connecting shaft, and each of the third permanent magnet blocks is distributed around the axis center of the connecting shaft.

[0012] In the above-mentioned disc brake with adaptive brake disc position, it also includes a spring, which is located between the second brake seat and the brake pad, and the two ends of the spring are respectively in contact with the second brake seat and the brake pad, and the spring pushes the brake pad close to the first brake seat.

[0013] In the above-mentioned disc brake with adaptive brake disc position, the number of the springs is at least two, and the springs are distributed around the center of the axis of the connecting shaft.

[0014] In the above-mentioned disc brake with adaptive brake disc position, the second brake seat includes a yoke and a coil, the coil is connected to the yoke, and the brake block includes an armature. When the coil is energized, it attracts the armature to move the brake block away from the first brake seat.

[0015] In the above-mentioned disc brake with adaptive brake disc position, the coils are distributed around the center of the axis of the coupling shaft.

[0016] In the above-mentioned disc brake with adaptive brake disc position, it also includes a friction plate, which is located between the first brake seat and the brake disc and between the brake disc and the brake pad. The first brake seat contacts the brake disc through the friction plate, and the brake disc contacts the brake pad through the friction plate.

[0017] The above-mentioned disc brake with adaptive brake disc position further includes a bearing, wherein the bearing is located between the first brake seat and the connecting shaft, and the connecting shaft is rotatably connected to the first brake seat through the bearing.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. When the brake block is close to the first brake seat, it overcomes the magnetic force between the first permanent magnet block and the second permanent magnet block and the magnetic force between the second permanent magnet block and the third permanent magnet block, and makes the first brake seat contact with the brake block and the brake block contact with the brake disc to brake; when the brake block is away from the first brake seat, under the joint action of the magnetic force between the first permanent magnet block and the second permanent magnet block and the magnetic force between the second permanent magnet block and the third permanent magnet block, the brake disc is away from the first brake seat and the brake block, so that the three will not rub and generate noise in the non-braking state, thereby ensuring the performance and life of the brake.

[0020] 2. The polarity of the first permanent magnet block close to the second permanent magnet block is the same as the polarity of the second permanent magnet block close to the first permanent magnet block, and the polarity of the second permanent magnet block close to the third permanent magnet block is the same as the polarity of the third permanent magnet block close to the second permanent magnet block, ensuring that the two adjacent permanent magnets always repel each other.

[0021] 3. The number of the first permanent magnet blocks and the second permanent magnet blocks are the same and are distributed in a mirror-symmetrical manner. The number of the second permanent magnet blocks and the third permanent magnet blocks are the same and are distributed in a mirror-symmetrical manner. It is ensured that the direction of the total magnetic force between each first permanent magnet block and each second permanent magnet block is distributed along the axis of the connecting shaft, and the direction of the total magnetic force between each second permanent magnet block and each third permanent magnet block is distributed along the axis of the connecting shaft, so as to prevent the first permanent magnet block, the second permanent magnet block and the third permanent magnet block from colliding or contacting.

[0022] 4. Each first permanent magnet block is distributed around the center of the axis of the connecting shaft, each second permanent magnet block is distributed around the center of the axis of the connecting shaft, and each third permanent magnet block is distributed around the center of the axis of the connecting shaft to ensure that the direction of the electromagnetic force is parallel to the axis of the connecting shaft, thereby avoiding the brake disc from getting stuck.

[0023] 5. Each spring is distributed around the center of the axis of the connecting shaft to ensure that the direction of the spring force is parallel to the axis of the connecting shaft, thereby avoiding jamming of the brake disc.

[0024] 6. The coil is distributed around the center of the axis of the connecting shaft to ensure that the direction of the electromagnetic force that attracts the armature when the coil is energized is parallel to the axis of the connecting shaft, thereby avoiding the brake disc from getting stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention in a power-off state.

[0026] Figure 2 for Figure 1 Enlarged view of part I.

[0027] Figure 3 It is a schematic diagram of the structure of the present invention in the powered state.

[0028] Figure 4 for Figure 3 Enlarged view of Part II.

[0029] In the figure, 1, connecting shaft; 2, bearing; 3, brake part; 4, armature; 5, yoke; 6, spring; 7, coil; 8, brake disc; 9, third permanent magnet block; 10, second permanent magnet block; 11, first permanent magnet block; 12, friction plate. DETAILED DESCRIPTION

[0030] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0031] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0036] like Figure 1-Figure 4 As shown, a disc brake with adaptive position of a brake disc 8 comprises: a seat assembly, a brake assembly and an adaptive assembly.

[0037] The seat assembly includes a first brake seat and a second brake seat, the first brake seat and the second brake seat are relatively fixed, and the second brake seat is provided with a movable brake block, and the brake block can be close to or away from the first brake seat.

[0038] The brake assembly includes a connecting shaft 1 and a brake disc 8. The connecting shaft 1 is rotatably connected to the first brake seat. The brake disc 8 is located between the first brake seat and the brake block. The brake disc 8 is connected to the connecting shaft 1 and can move axially along the connecting shaft 1.

[0039] Among them, the adaptive component includes a first permanent magnet block 11, a second permanent magnet block 10 and a third permanent magnet block 9, the first permanent magnet block 11 is connected to the first brake seat, the second permanent magnet block 10 is connected to the brake disc 8, the third permanent magnet block 9 is connected to the brake block, the first permanent magnet block 11 and the second permanent magnet block 10 are mutually exclusive, and the second permanent magnet block 10 and the third permanent magnet block 9 are mutually exclusive.

[0040] In this embodiment, when the brake block is close to the first brake seat, it overcomes the magnetic force between the first permanent magnet block 11 and the second permanent magnet block 10 and the magnetic force between the second permanent magnet block 10 and the third permanent magnet block 9, and makes the first brake seat contact with the brake block and the brake block contact with the brake disc 8, so as to brake; when the brake block is away from the first brake seat, under the joint action of the magnetic force between the first permanent magnet block 11 and the second permanent magnet block 10 and the magnetic force between the second permanent magnet block 10 and the third permanent magnet block 9, the brake disc 8 is away from the first brake seat and the brake block, so that the three will not rub and generate noise in the non-braking state, thereby ensuring the performance and life of the brake.

[0041] Preferably, it also includes a friction plate 12, which is located between the first brake seat and the brake disc 8 and between the brake disc 8 and the brake pad. When the first brake seat contacts the brake disc 8, the contact is through the friction plate 12, and when the brake disc 8 contacts the brake pad, the contact is through the friction plate 12.

[0042] Preferably, it further comprises a bearing 2 , wherein the bearing 2 is located between the first brake seat and the connecting shaft 1 , and the connecting shaft 1 is rotatably connected to the first brake seat via the bearing 2 .

[0043] like Figure 1-Figure 4 As shown, on the basis of the above embodiment, the polarities of the first permanent magnet block 11, the second permanent magnet block 10 and the third permanent magnet block 9 are all distributed along the axial direction of the connecting shaft 1, the polarity of the first permanent magnet block 11 close to the second permanent magnet block 10 is the same as the polarity of the second permanent magnet block 10 close to the first permanent magnet block 11, and the polarity of the second permanent magnet block 10 close to the third permanent magnet block 9 is the same as the polarity of the third permanent magnet block 9 close to the second permanent magnet block 10.

[0044] It is worth noting here that the polarity of the side of the second permanent magnet block 10 close to the third permanent magnet block 9 may be different from the polarity of the side of the second permanent magnet block 10 close to the first permanent magnet block 11 .

[0045] In this embodiment, the polarity of the first permanent magnet block 11 close to the second permanent magnet block 10 is the same as the polarity of the second permanent magnet block 10 close to the first permanent magnet block 11, and the polarity of the second permanent magnet block 10 close to the third permanent magnet block 9 is the same as the polarity of the third permanent magnet block 9 close to the second permanent magnet block 10, thereby ensuring that two adjacent permanent magnets always repel each other.

[0046] like Figure 1-Figure 4 As shown, on the basis of the above embodiment, the number of the first permanent magnet blocks 11 and the second permanent magnet blocks 10 is the same, and the first permanent magnet blocks 11 and the second permanent magnet blocks 10 are distributed in a mirror-symmetrical manner, and the number of the second permanent magnet blocks 10 and the third permanent magnet blocks 9 is the same, and the second permanent magnet blocks 10 and the third permanent magnet blocks 9 are distributed in a mirror-symmetrical manner.

[0047] In this embodiment, the number of the first permanent magnet blocks 11 and the second permanent magnet blocks 10 is the same and they are distributed in a mirror-symmetrical manner, and the number of the second permanent magnet blocks 10 and the third permanent magnet blocks 9 is the same and they are distributed in a mirror-symmetrical manner, ensuring that the direction of the total magnetic force between each first permanent magnet block 11 and each second permanent magnet block 10 is distributed along the axis of the connecting shaft 1, ensuring that the direction of the total magnetic force between each second permanent magnet block 10 and each third permanent magnet block 9 is distributed along the axis of the connecting shaft 1, and preventing the first permanent magnet block 11, the second permanent magnet block 10 and the third permanent magnet block 9 from colliding or contacting.

[0048] like Figure 1-Figure 4As shown, on the basis of the above embodiment, the number of the first permanent magnet block 11, the second permanent magnet block 10 and the third permanent magnet block 9 is at least two, each of the first permanent magnet blocks 11 is distributed around the axis center of the connecting shaft 1, each of the second permanent magnet blocks 10 is distributed around the axis center of the connecting shaft 1, and each of the third permanent magnet blocks 9 is distributed around the axis center of the connecting shaft 1.

[0049] In this embodiment, each first permanent magnet block 11 is distributed around the axis center of the connecting shaft 1, each second permanent magnet block 10 is distributed around the axis center of the connecting shaft 1, and each third permanent magnet block 9 is distributed around the axis center of the connecting shaft 1, ensuring that the direction of the electromagnetic force is parallel to the axis of the connecting shaft 1, thereby avoiding jamming of the brake disc 8.

[0050] like Figure 1-Figure 4 As shown, based on the above embodiment, it also includes a spring 6, which is located between the second brake seat and the brake block. The two ends of the spring 6 are respectively in contact with the second brake seat and the brake block, and the spring 6 pushes the brake block to approach the first brake seat.

[0051] In this embodiment, the spring 6 pushes the brake pad close to the first brake seat, overcoming the magnetic force between the first permanent magnet block 11 and the second permanent magnet block 10 and the magnetic force between the second permanent magnet block 10 and the third permanent magnet block 9, and making the first brake seat contact with the brake pad and the brake pad contact with the brake disc 8 to perform braking.

[0052] like Figure 1-Figure 4 As shown, based on the above embodiment, the number of the springs 6 is at least two, and each of the springs 6 is distributed around the axis center of the coupling shaft 1 .

[0053] In this embodiment, the springs 6 are distributed around the center of the axis of the connecting shaft 1 to ensure that the direction of the combined force of the springs 6 is parallel to the axis of the connecting shaft 1, thereby preventing the brake disc 8 from getting stuck.

[0054] like Figure 1-Figure 4 As shown, based on the above embodiment, the second brake seat includes a yoke 5 and a coil 7, the coil 7 is connected to the yoke 5, and the brake block includes an armature 4. When the coil 7 is energized, it attracts the armature 4 to move the brake block away from the first brake seat.

[0055] The yoke 5 is a soft magnetic material that transmits magnetic lines of force in the magnetic circuit and is made of soft iron, A3 steel and soft magnetic alloy with relatively high magnetic permeability.

[0056] In the present embodiment, when the coil 7 is energized, the armature 4 is attracted so that the brake pad is in contact with the yoke 5, thereby keeping the brake pad away from the first brake seat.

[0057] like Figure 1-Figure 4 As shown, on the basis of the above embodiment, the coil 7 is distributed around the axis center of the coupling shaft 1 .

[0058] In this embodiment, the coil 7 is distributed around the center of the axis of the coupling shaft 1 to ensure that the direction of the electromagnetic force of the coil 7 to attract the armature 4 is parallel to the axis of the coupling shaft 1, thereby preventing the brake disc 8 from getting stuck.

[0059] In terms of the overall implementation steps:

[0060] Firstly, the second permanent magnet blocks 10 are fixedly arranged on the brake disc 8 in an even number and are symmetrical about the axial direction to ensure that the direction of the electromagnetic force is parallel to the axis of the connecting shaft 1, thereby avoiding the brake disc 8 from getting stuck.

[0061] Then, the first permanent magnet block 11 and the third permanent magnet block 9 are fixedly arranged on the first brake seat and the brake block respectively, the number is an even number, the polarity of the first permanent magnet block 11 close to the second permanent magnet block 10 is the same as the polarity of the second permanent magnet block 10 close to the first permanent magnet block 11, the polarity of the second permanent magnet block 10 close to the third permanent magnet block 9 is the same as the polarity of the third permanent magnet block 9 close to the second permanent magnet block 10, and the gaps are equal: S11=S21, and (S12+S22)>S(total brake gap)+allowable wear of brake shoe, so as to prevent the first permanent magnet block 11, the second permanent magnet block 10 and the third permanent magnet block 9 from colliding or contacting.

[0062] Then, the material, characteristics, quantity, size, gap and related dimensions (including diameter) of the first permanent magnet block 11, the second permanent magnet block 10 and the third permanent magnet block 9 are The selection of the length L) to ensure that the magnetic force can overcome the resistance of the brake disc 8 sliding on the shaft and slide fast enough can be optimized through electromagnetic calculation combined with experiments.

[0063] Then, the radial positions of the first permanent magnet block 11, the second permanent magnet block 10 and the third permanent magnet block 9 can be adjusted as needed by adding mounting structures made of non-ferromagnetic materials in the middle, so that the distance between them and the coil 7 is large enough to eliminate the additional force interference caused by the leakage magnetic field generated by the coil 7.

Claims

1. A disc brake with self-adaptive brake disc position, characterized in that: include: A seat assembly, comprising a first brake seat and a second brake seat, wherein the first brake seat is relatively fixed to the second brake seat, and the second brake seat is provided with a movable brake block, and the brake block can be moved close to or away from the first brake seat; A brake assembly, comprising a coupling shaft and a brake disc, wherein the coupling shaft is rotatably connected to the first brake seat, the brake disc is located between the first brake seat and the brake block, and the brake disc is connected to the coupling shaft and can move along the axial direction of the coupling shaft; An adaptive component includes a first permanent magnet block, a second permanent magnet block and a third permanent magnet block, wherein the first permanent magnet block is connected to the first brake seat, the second permanent magnet block is connected to the brake disc, the third permanent magnet block is connected to the brake block, the first permanent magnet block and the second permanent magnet block are mutually exclusive, and the second permanent magnet block and the third permanent magnet block are mutually exclusive.

2. A disc brake with self-adaptive brake disc position according to claim 1, characterized in that: The polarities of the first permanent magnet block, the second permanent magnet block and the third permanent magnet block are all distributed along the axial direction of the connecting shaft, the polarity of the first permanent magnet block close to the second permanent magnet block is the same as the polarity of the second permanent magnet block close to the first permanent magnet block, and the polarity of the second permanent magnet block close to the third permanent magnet block is the same as the polarity of the third permanent magnet block close to the second permanent magnet block.

3. A disc brake with self-adaptive brake disc position according to claim 2, characterized in that: The number of the first permanent magnet blocks is the same as that of the second permanent magnet blocks, and the first permanent magnet blocks and the second permanent magnet blocks are distributed in a mirror-symmetrical manner. The number of the second permanent magnet blocks and the third permanent magnet blocks is the same, and the second permanent magnet blocks and the third permanent magnet blocks are distributed in a mirror-symmetrical manner.

4. A disc brake with self-adaptive brake disc position according to claim 3, characterized in that: The number of the first permanent magnet blocks, the second permanent magnet blocks and the third permanent magnet blocks are at least two, each of the first permanent magnet blocks is distributed around the axis center of the connecting shaft, each of the second permanent magnet blocks is distributed around the axis center of the connecting shaft, and each of the third permanent magnet blocks is distributed around the axis center of the connecting shaft.

5. The disc brake with self-adaptive brake disc position according to claim 1, characterized in that: It also includes a spring, which is located between the second brake seat and the brake block, with two ends of the spring contacting the second brake seat and the brake block respectively, and the spring pushes the brake block to approach the first brake seat.

6. A disc brake with self-adaptive brake disc position according to claim 5, characterized in that: The number of the springs is at least two, and the springs are distributed around the center of the axis of the connecting shaft.

7. The disc brake with self-adaptive brake disc position according to claim 5, characterized in that: The second brake seat includes a yoke and a coil, wherein the coil is connected to the yoke, and the brake block includes an armature. When the coil is energized, the armature is attracted to move the brake block away from the first brake seat.

8. A disc brake with self-adaptive brake disc position according to claim 7, characterized in that: The coils are distributed around the axis center of the coupling shaft.

9. The disc brake with self-adaptive brake disc position according to claim 1, characterized in that: It also includes a friction plate, which is located between the first brake seat and the brake disc and between the brake disc and the brake block. The first brake seat contacts the brake disc through the friction plate, and the brake disc contacts the brake block through the friction plate.

10. The disc brake with self-adaptive brake disc position according to claim 1, characterized in that: It also includes a bearing, which is located between the first brake seat and the connecting shaft, and the connecting shaft is rotatably connected to the first brake seat through the bearing.

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