CN219755187U - Novel air-cooled normally closed disc brake - Google Patents

Abstract

The utility model provides a novel air-cooled normally closed disc brake, which comprises a flange plate, a pressure plate, a plurality of brake discs, a plurality of fluted discs, a return spring, a brake unit and a plurality of support plates, wherein the flange plate is provided with a second mounting hole for connecting with target equipment; each fluted disc is positioned between two adjacent brake discs; the return spring has elastic force for enabling two adjacent brake discs to be far away from each other; the braking unit comprises a fixed disc and a braking part, wherein the fixed disc is positioned on one side of the pressure plate, which is opposite to the flange plate, and the braking part is used for moving along the axial direction of the pressure plate so as to squeeze the pressure plate; the support plates are uniformly distributed around the axial direction of the flange plate, and a heat dissipation interval is formed between two adjacent support plates. The novel air-cooled normally closed disc brake provided by the utility model has the advantages that the heat dissipation efficiency is improved, and the service life is prolonged; the structure is simplified, and the integral counterweight is reduced.

Description

Novel air-cooled normally closed disc brake

Technical Field

The utility model belongs to the technical field of brakes, and particularly relates to a novel air-cooled normally closed disc brake.

Background

In order to improve the heat dissipation efficiency, the traditional novel air-cooled normally closed disc brake is cooled by water cooling, a copper plate is used as a cooling water channel, the cost is high, a U-shaped mounting hole with a special shape is required for a mounting hole of a friction copper plate, the mounting hole is required to be subjected to sealing treatment, the structure is complex, and the mounting step is complicated; the friction copper plate has heavier mass due to the operations of sealing, manufacturing a cooling water channel and the like; moreover, the water-cooled heat dissipation has extremely high requirements on the sealing performance of the water channel, is not easy to maintain, and causes the condition of water leakage in use, thereby causing the failure of the brake and the reduction of the service life.

Disclosure of Invention

The embodiment of the utility model provides a novel air-cooled normally-closed disc brake, and aims to solve the technical problems that an existing water-cooled novel air-cooled normally-closed disc brake is complex in structure, complex in installation, difficult to maintain and easy to leak water in the use process.

In order to achieve the above purpose, the utility model adopts the following technical scheme: provided is a novel air-cooled normally closed disc brake, comprising:

a flange having a second mounting hole for connection with a target device;

the pressure plate is positioned at one axial side of the flange plate at intervals; a plurality of brake discs positioned between the flange and the pressure plate;

the plurality of fluted discs are respectively positioned between two adjacent brake discs;

the return spring is arranged between two adjacent brake discs and has elastic force for enabling the two adjacent brake discs to be far away from each other;

the braking unit comprises a fixed disc and a braking part, wherein the fixed disc is positioned on one side of the pressure plate, which is opposite to the flange disc, and is fixedly connected with the flange disc, and the braking part is positioned between the fixed disc and the pressure plate and is used for moving along the axial direction of the pressure plate so as to squeeze the pressure plate;

the plurality of support plates are uniformly distributed around the axial direction of the flange plate, heat dissipation intervals are formed between two adjacent support plates, and each support plate is connected between the flange plate and the fixed plate and is positioned on the periphery of the brake disc and the fluted disc.

In one possible implementation, the braking unit further includes:

the spring disc is arranged between the fixed disc and the pressure disc, the spring disc forms the braking part, a round table is arranged on one side of the spring disc, which is away from the pressure disc, in a protruding mode, and the round table is matched with the inner ring of the fixed disc;

the mounting disc is arranged on one side, away from the pressure disc, of the fixed disc, and is fixedly connected with the spring disc, and a through hole is formed in the mounting disc;

the air bag is arranged between the mounting plate and the fixed plate and is provided with an air tap, and the air tap penetrates through the through hole and extends out of the outside;

the brake spring is arranged between the spring disc and the fixed disc and has elastic force for enabling the spring disc and the fixed disc to be far away from each other;

the spring disc, the fixed disc and the mounting disc are all coaxially arranged.

In one possible implementation manner, a first adjusting gasket is arranged between the round table and the mounting plate, and a second adjusting gasket is also arranged between the supporting plate and the fixing plate.

In one possible implementation, a plurality of reinforcing ribs are arranged on the side, facing the fixed disk, of the spring disk in a protruding manner, and the extending direction of the reinforcing ribs is parallel to the radial direction of the spring disk.

In one possible implementation manner, a fan-shaped area is formed by surrounding adjacent reinforcing ribs, a plurality of first spring holes are arranged in the fan-shaped area, a plurality of second spring holes are formed by sinking one side of the fixing disc, which faces the spring disc, and a plurality of first spring holes and a plurality of second spring holes are in one-to-one correspondence to form a mounting cavity for mounting the brake spring.

In one possible implementation, the toothed disc includes:

a main body;

the friction discs are respectively arranged at two shaft ends of the main body, an annular groove is formed in one side surface of the friction disc, which is opposite to the main body, the inner diameter of the groove is equal to the inner diameter of the friction disc, and the outer diameter of the groove is smaller than the outer diameter of the friction disc;

the body is coaxially disposed with the friction disk.

In one possible implementation manner, the supporting plate is a hollow member, a refrigerating cavity is formed in the supporting plate, and an air inlet hole communicated with the refrigerating cavity is formed in the supporting plate;

the novel air-cooled normally closed disc brake further comprises refrigerating equipment and a cold air pipeline, wherein the cold air pipeline is communicated between the refrigerating cavity and the refrigerating equipment.

In one possible implementation manner, the novel air-cooled normally closed disc brake further comprises a gear hub, the gear hub is sleeved on a brake shaft of the target device, an inner ring of the fluted disc is matched with the gear hub, and the rotation force on the brake shaft is transmitted to the fluted disc;

the inner periphery of the supporting plate protrudes to form a mounting part extending along the axial direction of the fluted disc, the mounting part is respectively arranged on two opposite sides of the supporting plate along the circumferential direction of the fluted disc, and two shaft ends of the mounting part are respectively provided with a first mounting hole.

In one possible implementation manner, the fixing disc is connected with the flange disc through bolts, lugs are formed by protruding the periphery of the brake disc, through holes for the bolts to penetrate through are formed in the lugs, and the return spring is sleeved on the periphery of the bolts and is located between two adjacent lugs.

In one possible implementation, the flange, the toothed disc, the brake disc, the pressure plate, the outer circumferential surface of the fixing disc and/or the shaft end surface are provided with lifting holes.

Compared with the prior art, the novel air-cooled normally-closed disc brake not only ensures the integration of the structure, but also is beneficial to realizing heat dissipation by ventilation in nature because the interval between the adjacent support plates forms an open structure, thereby improving the heat dissipation efficiency and prolonging the service life; ventilation is realized through the intervals between the supporting plates, so that the situation that a cooling water channel is arranged inside is avoided, faults caused by water leakage can not occur, the structure is simplified, and the integral counterweight is reduced; through setting up the heat dissipation interval, can set up the second mounting hole on the ring flange in the position of corresponding heat dissipation interval, avoid making the external diameter increase of ring flange set up the mounting hole in the part of the external diameter increase of ring flange for the installation needs, this structure has reduced the external diameter of ring flange, weight reduction, reduction whole external diameter when reduce cost.

Drawings

Fig. 1 is a schematic perspective view of a novel air-cooled normally closed disc brake according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a novel air-cooled normally-closed disc brake according to an embodiment of the present utility model;

FIG. 3 is a schematic front view of a fluted disc according to an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a schematic front view of a spring holder according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram illustrating a front view of a support plate according to an embodiment of the present utility model;

FIG. 7 is a right-side view schematically illustrating a support plate according to an embodiment of the present utility model;

fig. 8 is a schematic perspective view of a novel air-cooled normally closed disc brake according to a second embodiment of the present utility model;

fig. 9 is a schematic front view of a support plate according to a second embodiment of the present utility model;

fig. 10 is a schematic right-view structure of a support plate according to a second embodiment of the present utility model.

Reference numerals illustrate:

10-tooth hubs;

20-a brake disc; 21-lugs;

30-fluted disc; 31-a body; 32-friction disc; 33-grooves;

40-return spring;

50-a flange plate; 51-bolts; 52-a second mounting hole;

60-pressing plate;

70-a brake unit; 71-a fixed disk; 711-a second spring hole; 72-spring plate; 721-stiffening ribs; 722-a first spring hole; 723-round bench; 73-mounting plate; 74-an air bag; 75-braking spring; 76-air tap; 77-a first adjustment shim; 78-a second adjusting shim;

80-supporting plates; 81-a refrigeration cavity; 82-a mounting portion; 83-a first mounting hole; 84-lifting holes; 85-air inlet holes;

90-refrigeration equipment; 91-cold air pipeline.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

When an element is referred to as being "fixed," "secured," "connected," "disposed," "secured" to another element, there may be no intervening elements present. Furthermore, when an element is referred to as being "connected" to "another element, it can be construed as being mechanically, electrically, communicatively, etc., as would be conventionally understood by one skilled in the art. Herein, "plurality" refers to two or more numbers; "number" refers to one or more numbers. Further, herein, when one or more are present, then there should be one or more, and when no defined number of words are present, then there may be one or more.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

Referring to fig. 1 to 10, the novel air-cooled normally closed disc brake provided by the present utility model will now be described. The novel air-cooled normally closed disc brake comprises a flange plate 50, a pressure plate 60, a plurality of brake discs 20, a plurality of fluted discs 30, a return spring 40, a brake unit 70 and a plurality of support plates 80, wherein the flange plate 50 is provided with a second mounting hole 52 for connecting with target equipment; the pressure plate 60 is spaced apart on an axial side of the flange 50, and the plurality of brake disks 20 are positioned between the flange 50 and the pressure plate 60; each toothed disc 30 is located between two adjacent brake discs 20; the return spring 40 is arranged between the two adjacent brake discs 20, and the return spring 40 has elastic force for keeping the two adjacent brake discs 20 away from each other; the flange 50 is positioned at one axial end of the gear hub 10; the pressure plate 60 is positioned at the other shaft end of the gear hub 10; the brake unit 70 includes a fixed disc 71 and a brake part, the fixed disc 71 is located at one side of the pressure plate 60 facing away from the flange 50 and fixedly connected with the flange 50, and the brake part is located between the fixed disc 71 and the pressure plate 60 and is used for moving along the axial direction of the pressure plate 60 to press the pressure plate 60; the plurality of support plates 80 are uniformly distributed around the axial direction of the flange plate 50, a heat dissipation space is formed between two adjacent support plates 80, and each support plate 80 is connected between the flange plate 50 and the fixed disc 71 and is located at the outer circumferences of the brake disc 20 and the toothed disc 30.

It is to be readily understood that the hub 10, brake disc 20, toothed disc 30, flange 50, pressure plate 60 and fixed disc 71 are all coaxially disposed; in the process that the braking part presses the pressure plate 60, the braking part can directly press, or can indirectly press the pressure plate 60 through the centering element.

In the normal operation state of the embodiment, the gear hub 10 is sleeved on the brake shaft of the target device, the brake disc 20 and the gear disc 30 are sleeved on the periphery of the gear hub 10, the inner ring of the brake disc 20 is not contacted with the gear hub 10, the inner ring of the gear disc 30 is matched with the gear hub 10, the rotating force on the brake shaft is transmitted to the gear disc 30, the gear disc 30 and the gear hub 10 rotate along with the brake shaft, when braking is needed, the braking part of the brake unit 70 moves close to the pressure disc 60 and is abutted on the pressure disc 60, the pressure disc 60 presses the nearest brake disc 20, the pressure is sequentially transmitted to each brake disc 20, the brake disc 20 is pressed at the two shaft ends of the gear disc 30 against the elastic force of the return spring 40, and the friction between the gear disc 30 and the friction disc 20 realizes braking; when stopping braking, the braking portion is away from the pressure plate 60, the return spring 40 returns and pushes the adjacent brake disc 20 away, the brake disc 20 is separated from the fluted disc 30, and the fluted disc 30 can continue to rotate with the brake shaft.

Compared with the prior art, the novel air-cooled normally-closed disc brake not only ensures the integration of the structure, but also is beneficial to realizing heat dissipation by ventilation in nature because the interval between the adjacent support plates 80 forms an open structure, thereby improving the heat dissipation efficiency and prolonging the service life; ventilation is realized through the interval between the support plates 80, so that the condition that a cooling water channel is arranged inside is avoided, and not only is the fault caused by water leakage avoided, but also the structure is simplified, and the integral counterweight is reduced; by arranging the heat dissipation intervals, the second mounting holes 52 can be formed in the flange plate 50 at positions corresponding to the heat dissipation intervals, so that the problem that the mounting holes are formed in the part with the increased outer diameter of the flange plate 50 for mounting, which is required to increase the outer diameter of the flange plate 50, is avoided.

In some embodiments, one embodiment of the brake unit 70 may be configured as shown in fig. 2. Referring to fig. 2, the brake unit 70 further includes a spring disc 72, a mounting disc 73, an air bag 74, and a brake spring 75, wherein the spring disc 72 is disposed between the fixed disc 71 and the pressure plate 60, the spring disc 72 forms a brake portion, a circular truncated cone 723 is protruding from one side of the spring disc 72 away from the pressure plate 60, and the circular truncated cone 723 is matched with an inner ring of the fixed disc 71; the mounting plate 73 is arranged on one side of the fixed plate 71, which is away from the pressure plate 60, and is fixedly connected with the spring plate 72, and the mounting plate 73 is provided with a through hole; the air bag 74 is arranged between the mounting plate 73 and the fixed plate 71, the air bag 74 comprises an air tap 76, and the air tap 76 penetrates through the through hole to extend out of the outside; the brake spring 75 is provided between the spring plate 72 and the fixed plate 71, and the brake spring 75 has an elastic force that moves the spring plate 72 and the fixed plate 71 away from each other; the spring plate 72, the fixed plate 71 and the mounting plate 73 are all coaxially arranged.

Because the fixed disc 71 is fixedly connected with the flange 50 and cannot move relatively, the air bag 74 is in an inflated state in a normal operation state, and the spring disc 72 is spaced from the pressure disc 60 at this time, and the brake spring 75 is compressed; when braking is needed, the air bag 74 is deflated, the interval between the mounting disc 73 and the fixed disc 71 is reduced, the braking spring 75 presses the spring disc 72, the spring disc 72 is close to the pressure disc 60 and is abutted to the pressure disc 60, at the moment, the pressure disc 60 is abutted to the brake disc 20, the extrusion force is transmitted to the plurality of brake discs 20 and the fluted disc 30, and the fluted disc 30 rubs with the brake disc 20, so that braking is realized. The structure realizes braking through the cooperation of the air bag 74 and the braking spring 75, and compared with an air bag type brake which realizes braking through inflation, the air bag type brake is easy to be influenced by air pressure fluctuation, the structure of the embodiment realizes braking through deflation, after the air bag 74 is deflated, the brake is in a normally closed braking state under the elastic force action of the braking unit 70, the braking force is not influenced by air pressure fluctuation, and the safe braking can be ensured even if the power is cut off or the air is cut off accidentally.

As a variant, the braking unit 70 may also employ a piston device, in which case the piston rod of the piston device forms the braking portion, but the air bag 74 may achieve a faster response speed and a finer control than the piston device.

In some embodiments, a modified implementation of the brake unit 70 described above may employ a structure as shown in fig. 2. Referring to fig. 2, a first adjusting spacer 77 is provided between the circular table 723 and the mounting plate 73, and a second adjusting spacer 78 is provided between the support plate 80 and the fixing plate 71. The number of the first adjusting gaskets 77 and the second adjusting gaskets 78 can be set according to the requirement, so that the tire pressure of the air bag 74 can be conveniently adjusted.

As a modification, the first shim 77 may be provided separately, and the second shim 78 may be provided separately.

In any arrangement, when a plurality of second shims 78 are provided, the shapes of the plurality of second shims 78 may be the same or different. For example, the contact area of the second adjusting pad 78 contacting the fixing plate 71 is larger than the contact area of the second adjusting pad 78 contacting the supporting plate 80, and the design can make the size of the second adjusting pad 78 contacting the supporting plate 80 smaller, avoid interference with the spring plate 72, and simultaneously reduce the material of the second adjusting pad 78, the overall weight and the cost.

In some embodiments, a modified implementation of the spring plate 72 described above may employ a structure as shown in fig. 5. Referring to fig. 5, the spring plate 72 is provided with a plurality of reinforcing ribs 721 protruding toward one side of the fixed plate 71, and the extending direction of the reinforcing ribs 721 is parallel to the radial direction of the spring plate 72. The spring plate 72 needs to bear the pressing force of the brake spring 75, and the integral strength is enhanced and the service life is prolonged by providing a plurality of reinforcing ribs 721.

In some embodiments, a specific implementation of the brake spring 75 may be configured as shown in fig. 2 and 5. Referring to fig. 2 and 5, adjacent reinforcing ribs 721 enclose a sector area, a plurality of first spring holes 722 are formed in the sector area, the fixed disk 71 is recessed toward one side of the spring disk 72 to form a plurality of second spring holes 711, and the plurality of first spring holes 722 and the plurality of second spring holes 711 are in one-to-one correspondence to form a mounting cavity for mounting the brake spring 75. Through setting up first spring hole 722 and second spring hole 711, conveniently fix a position the installation to first spring hole 722 and second spring hole 711 can hold the both ends of braking spring 75 respectively, have not only improved the straightness that hangs down of braking spring 75, have guaranteed the braking force, compare in the axle head face of braking spring 75 direct butt at spring plate 72 or fixed disk 71, can also reduce the holistic thickness of stopper under the circumstances of guaranteeing spring plate 72 and fixed disk 71 intensity.

Specifically, the first spring holes 722 in the plurality of scalloped regions are distributed in an annular array about the axial direction of the spring plate 72, and are provided in a plurality of turns from inside to outside (herein "inside" refers to the inner ring and "outside" refers to the outer ring).

In some embodiments, one embodiment of the support plate 80 may be configured as shown in fig. 8 to 10. Referring to fig. 8 to 10, a support plate 80 is a hollow member, a refrigerating chamber 81 is formed inside, an air inlet hole 85 and an air outlet hole which are communicated with the refrigerating chamber 81 are formed on the support plate 80, the air inlet hole 85 is positioned at the outer side of the support plate 80, and the air outlet hole is positioned at the inner side of the support plate; the novel air-cooled normally closed disc brake further comprises a refrigeration device 90 and a cold air pipeline 91, wherein the cold air pipeline 91 is communicated between the refrigeration cavity 81 and the refrigeration device 90. Each supporting plate 80 is provided with two cold air pipelines 91, each cold air pipeline 91 is communicated with the air inlet hole 85 and the refrigerating equipment 90, under the condition, the refrigerating equipment 90 conveys cold air into the refrigerating cavity 81, the cold air in the supporting plate 80 circulates and takes away nearby heat, and the heat is discharged from the air outlet holes, so that the temperature of the supporting plate 80 is reduced, and meanwhile, the interval between the adjacent supporting plates 80 is beneficial to air circulation, and the heat dissipation efficiency can be further improved by combining the two.

In some embodiments, a modified embodiment of the support plate 80 may be configured as shown in fig. 7. Referring to fig. 7, the inner circumference of the support plate 80 is protruded to form mounting portions 82 extending in the axial direction of the toothed plate 30, the mounting portions 82 are respectively provided at opposite sides of the support plate 80 in the circumferential direction of the toothed plate 30, and both shaft ends of the mounting portions 82 are respectively provided with first mounting holes 83. The supporting plate 80 is connected with the flange plate 50 and the supporting plate 80 is connected with the fixed plate 71 through fasteners which are matched with the first mounting holes 83; the support plates 80 are conveniently connected by the mounting portions 82, and only the mounting portions 82 are thicker, the support plates 80 between the two mounting portions 82 are thinner, so that materials can be saved, and the weight can be reduced.

In some embodiments, a specific connection manner between the fixing plate 71 and the flange 50 may be as shown in fig. 1 to 2 and 8. Referring to fig. 1 to 2 and 8, the fixed disc 71 is connected with the flange 50 by bolts 51, the outer periphery of the brake disc 20 protrudes to form lugs 21, through holes for the bolts 51 to penetrate are formed in the lugs 21, and the return spring 40 is sleeved on the outer periphery of the bolts 51 and is located between two adjacent lugs 21. The fixed disc 71 is connected with the flange 50 through bolts 51, and the brake disc 20 and the pressure plate 60 are positioned in the rotating direction through the bolts 51 so as to avoid rotation or inclination; the bolts 51 are also utilized in the installation of the return spring 40, the connection effect of the bolts 51 is diversified, the use of connecting parts can be reduced, the structure is simplified, and the assembly is convenient.

In the specific installation process, the flange plate 50 is further provided with a countersink (corresponding to the axial position of the lug 21 along the flange plate 50), the head of the bolt 51 is positioned in the countersink when the bolt 51 is installed, interference with the head of the bolt 51 when the flange plate 50 is attached to target equipment is avoided, the head of the bolt 51 is in interference fit with the flange plate 50 and is clamped, the tail of the bolt 51 is matched with a longer hexagonal flange nut, and the connection is more stable.

The threaded section of the bolt 51 is connected to the fixed disk 71, and the portion of the bolt 51 corresponding to the lug 21 is a polished rod section. And because still be equipped with second mounting hole 52 on the ring flange 50, second mounting hole 52 is the through-hole, can be complete through-hole, also can be the through-hole that has the breach, second mounting hole 52 and counter bore are distributed in turn along the circumference of ring flange 50, and the vacant position of ring flange 50 can be rationally utilized to this arrangement form, avoids ring flange 50 to set up under the condition of bolt 51 and second mounting hole 52 simultaneously increase whole external diameter.

In some embodiments, one embodiment of the toothed disc 30 may take the configuration shown in fig. 2-4. Referring to fig. 2 to 4, the fluted disc 30 includes a main body 31 and a friction disc 32, wherein the main body 31 is sleeved on the periphery of the gear hub 10 and is matched with the gear hub 10; the friction discs 32 are made of composite materials, each two friction discs 32 are respectively arranged at two shaft ends of the main body 31, an annular groove 33 is formed in one side surface of each friction disc 32, which is back to the main body 31, the inner diameter of each groove 33 is equal to the inner diameter of each friction disc 32, and the outer diameter of each groove is smaller than the outer diameter of each friction disc 32. Because the friction disc 32 in the embodiment does not need to be provided with a cold water channel and a copper plate, the friction disc 32 can be made of a composite material with lower weight, and an annular groove 33 can be further arranged, so that the inner diameter of a friction area on the friction disc 32 is increased, the torque is further increased, and the braking effect is optimized; the design of the grooves 33 also reduces friction material, using a composite material with a lower weight, further reducing costs and overall weight of the brake.

The engagement between the main body 31 and the hub 10 may be, but is not limited to, interference engagement, locking of a fastener, engagement of teeth, engagement of a key slot or a clip, etc.

Specifically, the friction disc 32 is further provided with a sinking groove, the friction disc 32 is mounted on the main body 31 through a fastener, and the head of the fastener is positioned in the sinking groove, so that the friction disc 32 is prevented from being projected out of the end face of the friction disc 32 to interfere with the brake disc 20; in order to prevent loosening, a gasket can be sleeved on the fastener.

The friction disk 32 can be made of a composite material with better wear resistance, so that the stability of the braking process can be ensured, the service life can be prolonged, the cost is lower, and the heat exchange capacity can be improved.

In this embodiment, the flange 50, the main body 31, the brake disc 20 and the mounting disc 73 are made of metal; the flange 50, hub 10, toothed disc 30, brake disc 20, spring disc 72, fixed disc 71, mounting disc 73 and pressure plate 60 are all coaxial.

Because the parts are heavy, in order to facilitate the operations of lifting, dismounting, painting and the like, the flange plate 50, the gear hub 10, the fluted disc 30, the brake disc 20, the pressure disc 60, the spring disc 72, the fixed disc 71, the mounting disc 73 and the like can be provided with lifting holes 84 on the outer peripheral surface or the shaft end surface thereof, the lifting holes 84 are provided with internal threads and can be matched with lifting rings with external threads, the lifting rings are hooked by a crane, and the parts are lifted independently or the whole brake is lifted. The outer periphery of the support plate may be provided with the same hanging hole 84.

In order to improve the corrosion resistance of the brake, paint may be applied to the surfaces of the flange 50, the spring plate 72, the fixed plate 71, the mounting plate 73, the return spring 40 and the brake spring 75, and the fluted disc 30, the brake plate 20 and the pressure plate 60 may be painted only on the outer circumferential surface, with both shaft ends not being painted.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. A novel air-cooled normally closed disc brake, comprising:

a flange having a second mounting hole for connection with a target device;

the pressure plate is positioned at one axial side of the flange plate at intervals; a plurality of brake discs positioned between the flange and the pressure plate;

the plurality of fluted discs are respectively positioned between two adjacent brake discs;

the return spring is arranged between two adjacent brake discs and has elastic force for enabling the two adjacent brake discs to be far away from each other;

the braking unit comprises a fixed disc and a braking part, wherein the fixed disc is positioned on one side of the pressure plate, which is opposite to the flange disc, and is fixedly connected with the flange disc, and the braking part is positioned between the fixed disc and the pressure plate and is used for moving along the axial direction of the pressure plate so as to squeeze the pressure plate;

the plurality of support plates are uniformly distributed around the axial direction of the flange plate, heat dissipation intervals are formed between two adjacent support plates, and each support plate is connected between the flange plate and the fixed plate and is positioned on the periphery of the brake disc and the fluted disc.

2. The novel air-cooled normally-closed disc brake of claim 1, wherein the brake unit further comprises:

the spring disc is arranged between the fixed disc and the pressure disc, the spring disc forms the braking part, a round table is arranged on one side of the spring disc, which is away from the pressure disc, in a protruding mode, and the round table is matched with the inner ring of the fixed disc;

the mounting disc is arranged on one side, away from the pressure disc, of the fixed disc, and is fixedly connected with the spring disc, and a through hole is formed in the mounting disc;

the air bag is arranged between the mounting plate and the fixed plate and is provided with an air tap, and the air tap penetrates through the through hole and extends out of the outside;

the brake spring is arranged between the spring disc and the fixed disc and has elastic force for enabling the spring disc and the fixed disc to be far away from each other;

the spring disc, the fixed disc and the mounting disc are all coaxially arranged.

3. The novel air-cooled normally-closed disc brake of claim 2, wherein a first adjusting gasket is arranged between the round table and the mounting disc, and a second adjusting gasket is also arranged between the supporting plate and the fixing disc.

4. The novel air-cooled normally-closed disc brake according to claim 2, wherein a plurality of reinforcing ribs are arranged on one side of the spring disc, which faces the fixed disc, in a protruding manner, and the extending direction of the reinforcing ribs is parallel to the radial direction of the spring disc.

5. The novel air-cooled normally-closed disc brake of claim 4, wherein adjacent reinforcing ribs are enclosed to form a sector area, a plurality of first spring holes are arranged in the sector area, a plurality of second spring holes are formed by sinking the fixed disc towards one side of the spring disc, and a plurality of first spring holes and a plurality of second spring holes are in one-to-one correspondence to form a mounting cavity for mounting the brake spring.

6. The novel air-cooled normally-closed disc brake of claim 1, wherein the toothed disc comprises:

a main body;

the friction discs are respectively arranged at two shaft ends of the main body, an annular groove is formed in one side surface of the friction disc, which is opposite to the main body, the inner diameter of the groove is equal to the inner diameter of the friction disc, and the outer diameter of the groove is smaller than the outer diameter of the friction disc;

the body is coaxially disposed with the friction disk.

7. The novel air-cooled normally-closed disc brake according to claim 1, wherein the supporting plate is a hollow member, a refrigerating cavity is formed inside the supporting plate, and an air inlet hole communicated with the refrigerating cavity is formed in the supporting plate;

the novel air-cooled normally closed disc brake further comprises refrigerating equipment and a cold air pipeline, wherein the cold air pipeline is communicated between the refrigerating cavity and the refrigerating equipment.

8. The novel air-cooled normally-closed disc brake according to claim 1, further comprising a gear hub, wherein the gear hub is sleeved on a brake shaft of the target equipment, an inner ring of the fluted disc is matched with the gear hub, and the rotation force on the brake shaft is transmitted to the fluted disc;

the inner periphery of the supporting plate protrudes to form a mounting part extending along the axial direction of the fluted disc, the mounting part is respectively arranged on two opposite sides of the supporting plate along the circumferential direction of the fluted disc, and two shaft ends of the mounting part are respectively provided with a first mounting hole.

9. The novel air-cooled normally-closed disc brake according to claim 1, wherein the fixed disc is connected with the flange disc through bolts, lugs are formed by protruding the periphery of the brake disc, through holes for the bolts to penetrate are formed in the lugs, and the return spring is sleeved on the periphery of the bolts and is positioned between two adjacent lugs.

10. The novel air-cooled normally-closed disc brake according to claim 1, wherein the flange plate, the fluted disc, the brake disc, the pressure plate, the outer circumferential surface and/or the shaft end surface of the fixed disc are provided with lifting holes.