Brake mounting structure and integrated foundation brake device

Abstract

The utility model relates to the technical field of railway vehicles, and provides a brake installation structure and an integrated foundation brake device.The brake installation structure is arranged between a steering knuckle and a hub and comprises a brake disc, an installation plate and a brake clamp, the brake disc is fixedly arranged on the hub, and the axis of the brake disc coincides with the axis of the hub; the mounting plate is arranged between the brake disc and the steering knuckle, and the mounting plate is fixedly connected with the steering knuckle; the brake clamp is fixedly arranged on the mounting plate and is suitable for clamping or releasing the brake disc. According to the arrangement, the brake disc and the brake clamp are arranged between the steering knuckle and the hub, the space between the brake disc and the brake clamp is fully utilized, the brake disc and the brake clamp are arranged in the transverse direction of the bogie, occupied space in the longitudinal direction of the bogie is reduced, and the structure is more compact; the device can be suitable for being installed on a bogie with a narrow space.

Description

Technical Field

[0001] The utility model relates to the technical field of rail vehicles, and provides a brake mounting structure and an integrated foundation brake device. Background Art

[0002] The brake mounting structure is an actuator for stopping a train used in rail vehicles. Its working principle mainly relies on the lever principle and friction. When the brake system issues a braking command, the piston in the brake cylinder is driven to move by compressed air or hydraulic pressure, and the braking force is amplified and transmitted to the brake shoe or brake pad through a force amplification mechanism. After being acted on by the braking force, the brake shoe or brake pad presses against the wheel tread or brake disc, generating friction to decelerate and stop the train, thereby ensuring the safe and stable parking of the train.

[0003] In the related art, the brake mounting structure has a brake disc and a brake caliper. Generally, the brake disc is installed on the axle, and the brake caliper is installed on the crossbeam of the bogie frame. The structure is scattered and occupies a large space along the longitudinal direction of the bogie. Especially for the brake mounting structure with a high braking torque for a large axle load, its own volume is large and it occupies a large space, and it is not suitable for installation on a bogie with a narrow space.

[0004] Therefore, how to solve the problem that the brake mounting structure in the prior art is not suitable for installation on a bogie with a narrow space has become an important technical problem to be solved by those skilled in the art. Summary of the Utility Model

[0005] The embodiment of the utility model provides a brake mounting structure and an integrated foundation brake device to solve the defect that the brake mounting structure in the prior art is not suitable for installation on a bogie with a narrow space.

[0006] The first aspect embodiment of the utility model provides a brake mounting structure, which is arranged between a knuckle and a wheel hub. The brake mounting structure includes:

[0007] A brake disc, fixedly arranged on the wheel hub, and the axis of the brake disc coincides with the axis of the wheel hub;

[0008] A mounting plate, arranged between the brake disc and the knuckle, and the mounting plate is fixedly connected with the knuckle;

[0009] A brake caliper, fixedly arranged on the mounting plate, and the brake caliper is adapted to clamp or release the brake disc.

[0010] According to an embodiment of the utility model, it further includes:

[0011] A second connecting bolt, a third connecting hole is provided on the steering knuckle, a fourth connecting hole is provided on the mounting plate, the positions of the third connecting hole and the fourth connecting hole correspond to each other, the second connecting bolt passes through the fourth connecting hole and is threadedly connected to the third connecting hole.

[0012] According to an embodiment of the present invention, it further includes:

[0013] A second positioning pin, a third pin hole is provided on the mounting plate, a fourth pin hole is provided on the steering knuckle, the axes of the third pin hole and the fourth pin hole coincide, and both the third pin hole and the fourth pin hole are in interference fit with the second positioning pin.

[0014] According to an embodiment of the present invention, it further includes:

[0015] A second ejecting member, a second ejecting hole is provided on the mounting plate, the axis of the second ejecting hole is perpendicular to the mounting plate, the second ejecting member is threadedly connected to the second ejecting hole, and the end of the second ejecting member is adapted to abut against the steering knuckle.

[0016] According to an embodiment of the present invention, a plurality of the third connecting holes are provided, and each of the third connecting holes is spaced apart around the axis of the wheel hub;

[0017] A plurality of the fourth pin holes are provided, and each of the fourth pin holes is spaced apart around the axis of the wheel hub.

[0018] According to an embodiment of the present invention, it further includes:

[0019] A first connecting bolt, a first connecting hole is provided on the wheel hub, a second connecting hole is provided on the brake disc, the positions of the first connecting hole and the second connecting hole correspond to each other, the first connecting bolt passes through the second connecting hole and is threadedly connected to the first connecting hole.

[0020] According to an embodiment of the present invention, it further includes:

[0021] A first positioning pin, a first pin hole is provided on the brake disc, a second pin hole is provided on the wheel hub, the axes of the first pin hole and the second pin hole are both parallel to the axis of the brake disc, and both the first pin hole and the second pin hole are in interference fit with the first positioning pin.

[0022] According to an embodiment of the present invention, it further includes:

[0023] A first ejecting member, a first ejecting hole is provided on the brake disc, the axis of the first ejecting hole is parallel to the axis of the brake disc, the first ejecting member is threadedly connected to the first ejecting hole, and the end of the first ejecting member is adapted to abut against the hub.

[0024] According to an embodiment of the present invention, the brake disc is an integrally formed structure;

[0025] And / or, the material of the brake disc is aluminum alloy material.

[0026] An integrated basic braking device provided by an embodiment of the second aspect of the present invention includes the above-mentioned braking installation structure.

[0027] One or more of the above technical solutions in the embodiments of the present invention have at least one of the following technical effects.

[0028] According to the braking installation structure provided by the embodiment of the first aspect of the present invention, it is arranged between the steering knuckle and the hub. The braking installation structure includes a brake disc, a mounting plate and a brake caliper. The brake disc is fixedly arranged on the hub, and the axis of the brake disc coincides with the axis of the hub, so that the brake disc and the hub rotate synchronously. The mounting plate is arranged between the brake disc and the steering knuckle, and the mounting plate is fixedly connected to the steering knuckle. The brake caliper is fixedly arranged on the mounting plate, and the brake caliper can clamp or release the brake disc. When the brake caliper clamps the brake disc, the brake caliper generates a frictional force on the brake disc, thereby realizing the braking of the hub. When the brake caliper releases the brake disc, the braking can be released. With such an arrangement, the brake disc and the brake caliper are arranged between the steering knuckle and the hub, making full use of the space between the brake disc and the brake caliper, and the brake disc and the brake caliper are arranged transversely along the bogie, reducing the occupation of the space in the longitudinal direction of the bogie, and the structure is more compact, suitable for installation on a bogie with a small space, with strong adaptability, and solving the problem that the braking installation structure in the prior art is not suitable for installation on a bogie with a small space.

[0029] According to the integrated basic braking device provided by the embodiment of the second aspect of the present invention, since it has the above-mentioned braking installation structure, it also has the advantage of a compact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1It is a schematic structural diagram of the integrated foundation braking device provided by the present utility model.

[0032] Figure 2 It is Figure 1 an enlarged view of the X position in

[0033] Figure 3 It is Figure 1 an enlarged view of the Y position in

[0034] Figure 4 It is a schematic diagram of the relative position between the brake disc and the wheel hub provided by the present utility model.

[0035] Figure 5 It is a schematic diagram of the distribution positions of the first connecting bolt, the first top unloading part and the first positioning pin on the brake disc provided by the present utility model.

[0036] Figure 6 It is a schematic diagram of the distribution positions of the second connecting bolt, the second top unloading part, the second positioning pin and the third connecting bolt on the mounting plate provided by the present utility model.

[0037] Reference numerals:

[0038] 1, steering knuckle; 2, wheel hub; 3, brake disc; 4, first positioning pin; 5, first top unloading part; 6, mounting plate; 7, second connecting bolt; 8, second positioning pin; 9, second top unloading part; 10, first connecting bolt; 11, brake caliper; 12, third connecting bolt. Detailed implementation manners

[0039] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0040] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0041] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected to" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0042] In the embodiments of the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal height than the second feature.

[0043] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0044] The following Figures 1 to 6 describes the brake mounting structure of the present utility model.

[0045] As Figures 1 to 6 shown, an embodiment of the first aspect of the present utility model provides a brake mounting structure, which is arranged between the steering knuckle 1 and the wheel hub 2. The brake mounting structure includes a brake disc 3, a mounting plate 6 and a brake caliper 11.

[0046] Specifically, the brake disc 3 is fixedly arranged on the wheel hub 2, and the axis of the brake disc 3 coincides with the axis of the wheel hub 2, so that the brake disc 3 and the wheel hub 2 rotate synchronously.

[0047] The mounting plate 6 is arranged between the brake disc 3 and the steering knuckle 1, the mounting plate 6 is fixedly connected to the steering knuckle 1, and the brake caliper 11 is fixedly arranged on the mounting plate 6.

[0048] The mounting plate 6 provides a mounting position for the brake caliper 11 to ensure the proper alignment of the brake caliper 11 with the brake disc 3.

[0049] The brake caliper 11 is used to act on the brake disc 3. The brake caliper 11 is fixedly arranged on the mounting plate 6. Both the brake caliper 11 and the wheel hub 2 can rotate synchronously with the rotation of the steering knuckle 1. The relative position between the brake caliper 11 and the brake disc 3 does not change with the rotation of the steering knuckle 1, ensuring effective braking of the rail vehicle during steering.

[0050] The brake caliper 11 can clamp or release the brake disc 3. When the brake caliper 11 clamps the brake disc 3, the brake caliper 11 generates a frictional force on the brake disc 3. During braking, the braking force is applied to the brake disc 3 fixed on the wheel hub 2 through the brake caliper 11, and the braking force is transmitted to the wheel, thus achieving braking of the vehicle. When the brake caliper 11 releases the brake disc 3, the braking can be released.

[0051] Specifically, the brake caliper 11 includes a pair of brake pads and a brake cylinder. The two of the pair of brake pads are distributed on both sides of the brake disc 3 along the axial direction of the brake disc 3. The brake cylinder is used to drive the pair of brake pads to approach or move away from the brake disc 3. When the pair of brake pads approach the brake disc 3, the brake disc 3 can be clamped. When the pair of brake pads move away from the brake disc 3, the brake pads are disengaged from the brake disc 3, and the brake caliper 11 releases the brake disc 3.

[0052] With such an arrangement, the brake disc 3 and the brake caliper 11 are arranged between the steering knuckle 1 and the wheel hub 2, making full use of the space between the brake disc 3 and the brake caliper 11. Moreover, the brake disc 3 and the brake caliper 11 are arranged transversely along the bogie, reducing the occupation of space in the longitudinal direction of the bogie. The structure is more compact, suitable for installation on both bogies with larger space and those with narrow space, having strong adaptability and solving the problem that the existing brake installation structure is not suitable for installation on bogies with narrow space.

[0053] It should be noted that in the embodiment of the present utility model, a pneumatic disc brake caliper 11 is adopted. The brake caliper 11 is composed of an air chamber, a wear compensation mechanism, brake pads, and a bracket. The wear compensation mechanism can keep the clearance of the friction pair constant, ensuring the stability of the maximum braking torque.

[0054] Regarding the connection structure between the brake disc 3 and the wheel hub 2, in this embodiment, the brake installation structure further includes a first connecting bolt 10.

[0055] A first connection hole is provided on the wheel hub, and a second connection hole is provided on the brake disc 3. The positions of the first connection hole and the second connection hole correspond to each other. The first connection bolt 10 passes through the second connection hole and is threadedly connected to the first connection hole, so that the brake disc 3 and the wheel hub 2 are fixedly connected together by the first connection bolt 10.

[0056] Specifically, eight first connection holes are provided on the wheel hub 2, and the eight first connection holes are spaced along the circumferential direction of the wheel hub 2. Eight second connection holes are provided on the brake disc 3, and the eight second connection holes are spaced along the circumferential direction of the brake disc 3. The brake disc 3 and the wheel hub 2 are tightly connected together by eight first connection bolts 10, and each first connection bolt 10 can withstand shear force during the braking process.

[0057] In a further embodiment, the brake mounting structure further includes a first positioning pin 4.

[0058] A first pin hole is provided on the brake disc 3, and a second pin hole is provided on the wheel hub 2. The axes of the first pin hole and the second pin hole are both parallel to the axis of the brake disc 3, and the positions of the first pin hole and the second pin hole correspond to each other. The axes of the first pin hole and the second pin hole coincide. The first positioning pin 4 is located in the first pin hole and the second pin hole, and both the first pin hole and the second pin hole are in interference fit with the first positioning pin 4.

[0059] With such a setting, the first positioning pin 4 can also withstand shear force during the braking process, ensuring the relative stability between the brake disc 3 and the wheel hub 2, increasing the maximum allowable braking torque, and ensuring the reliability of the brake disc 3 under the maximum braking torque.

[0060] In a specific embodiment, four first pin holes are provided on the brake disc 3, and the four first pin holes are spaced along the circumferential direction of the brake disc 3. Four second pin holes are provided on the wheel hub 2, and the four second pin holes are spaced along the circumferential direction of the wheel hub 2. Four first positioning pins 4 are provided, and one first positioning pin 4 is arranged in each first pin hole and second pin hole.

[0061] To facilitate the disassembly and assembly of the brake disc 3, in a further embodiment, the brake mounting structure further includes a first ejecting member 5.

[0062] A first ejecting hole is provided on the brake disc 3, and the axis of the first ejecting hole is parallel to the axis of the brake disc 3. The first ejecting member 5 is threadedly connected to the first ejecting hole, and the end of the first ejecting member 5 can abut against the wheel hub 2.

[0063] When disassembling the brake disc 3, first remove the first connecting bolt 10 from the brake disc 3 and the wheel hub 2, then install the first ejector 5 into the first ejector hole on the brake disc 3, and screw the first ejector 5. The pressing force of the first ejector 5 on the wheel hub 2 gradually increases until the pressing force of the first ejector 5 on the wheel hub 2 overcomes the interference fit force between the first positioning pin 4 and the first pin hole or overcomes the interference fit force between the first positioning pin 4 and the second pin hole, so that the brake disc 3 can be separated from the wheel hub 2, and thus the brake disc 3 can be disassembled.

[0064] In a specific embodiment, a bolt can be selected as the above-mentioned first ejector 5.

[0065] For the connection structure between the mounting plate 6 and the steering knuckle 1, in this embodiment, the brake mounting structure further includes a second connecting bolt 7.

[0066] A third connecting hole is provided on the steering knuckle 1, and a fourth connecting hole is provided on the mounting plate 6. The positions of the third connecting hole and the fourth connecting hole correspond to each other. The second connecting bolt 7 passes through the fourth connecting hole and is threadedly connected to the third connecting hole, so as to fixedly connect the mounting plate 6 and the steering knuckle 1 together by using the second connecting bolt 7.

[0067] Specifically, six fourth connecting holes are provided on the mounting plate 6, and the six fourth connecting holes are spaced apart around the axis of the brake disc 3. Six third connecting holes are provided on the steering knuckle 1, and the six third connecting holes are spaced apart around the axis of the brake disc 3. The mounting plate 6 and the steering knuckle 1 are tightly connected together by using six second connecting bolts 7.

[0068] For the connection structure between the mounting plate 6 and the brake caliper 11, the brake caliper 11 can be tightly connected to the mounting plate 6 by using six third connecting bolts 12.

[0069] Combined with the above-mentioned various second connecting bolts 7 and third connecting bolts 12, the installation strength of the brake caliper 11 and the function of the brake caliper 11 can be ensured.

[0070] In a further embodiment, the brake mounting structure further includes a second positioning pin 8.

[0071] A third pin hole is provided on the mounting plate 6, and a fourth pin hole is provided on the steering knuckle 1. The axes of the third pin hole and the fourth pin hole coincide. The second positioning pin 8 is located in the third pin hole and the fourth pin hole, and both the third pin hole and the fourth pin hole are in interference fit with the second positioning pin 8.

[0072] With such a setting, the second positioning pin 8 can also bear the shear force during the braking process, ensuring the relative stability between the mounting plate 6 and the steering knuckle 1, increasing the maximum allowable braking torque, and ensuring the reliability of the mounting plate 6 under the maximum braking torque.

[0073] In a specific embodiment, four third pin holes are provided on the mounting plate 6, and the four third pin holes are distributed at intervals around the axis of the brake disc 3. Four fourth pin holes are provided on the steering knuckle 1, and the four fourth pin holes are distributed at intervals around the axis of the brake disc 3. Four second positioning pins 8 are provided, and one second positioning pin 8 is arranged in each of the third pin hole and the fourth pin hole.

[0074] For the convenience of disassembling and assembling the mounting plate 6, in a further embodiment, the brake mounting structure further includes a second ejecting member 9.

[0075] A second ejecting hole is provided on the mounting plate 6, and the axis of the second ejecting hole is perpendicular to the mounting plate 6. The second ejecting member 9 is threadedly connected to the second ejecting hole, and the end of the second ejecting member 9 can abut against the steering knuckle 1.

[0076] When disassembling the mounting plate 6, first remove the second connecting bolt 7 from the mounting plate 6 and the steering knuckle 1, then install the second ejecting member 9 into the second ejecting hole on the mounting plate 6, and screw the second ejecting member 9 to gradually increase the abutting force of the second ejecting member 9 on the steering knuckle 1 until the abutting force of the second ejecting member 9 on the steering knuckle 1 overcomes the interference fit force between the second positioning pin 8 and the third pin hole or overcomes the interference fit force between the second positioning pin 8 and the fourth pin hole, so that the mounting plate 6 can be separated from the steering knuckle 1, and thus the mounting plate 6 can be disassembled.

[0077] In a specific embodiment, a bolt can be selected as the above-mentioned second ejecting member 9.

[0078] In this embodiment, the material of the brake disc 3 is aluminum alloy material, which is beneficial to reducing the mass of the brake mounting structure and promoting lightweight design. The brake disc 3 can be processed and formed by an integral casting method.

[0079] In summary, the brake mounting structure provided by the embodiment of the present invention is arranged between the steering knuckle 1 and the wheel hub 2, with a compact structure, which is suitable for installation on both bogies with a large space and bogies with a small space, and has strong adaptability.

[0080] In the second aspect embodiment of the present invention, an integrated foundation brake device is provided, including the above-mentioned brake mounting structure. The brake mounting structure provided by the above embodiment has a compact structure and occupies less space in the longitudinal direction of the bogie, and is suitable for installation on both bogies with a large space and bogies with a small space. Therefore, the integrated foundation brake device in this embodiment has the advantage of a compact structure.

[0081] The derivation process of the beneficial effects of the integrated foundation brake device in the embodiment of the present invention is generally similar to the derivation process of the beneficial effects of the above-mentioned brake mounting structure, so it will not be elaborated here.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A braking installation structure, characterized in that, It is arranged between the knuckle and the wheel hub, and the brake mounting structure includes: A brake disc, fixedly arranged on the wheel hub, and the axis of the brake disc coincides with the axis of the wheel hub; A mounting plate, arranged between the brake disc and the knuckle, and the mounting plate is fixedly connected to the knuckle; A brake caliper, fixedly arranged on the mounting plate, and the brake caliper is adapted to clamp or release the brake disc.

2. The braking installation structure according to claim 1, wherein It further includes: A second connecting bolt. A third connecting hole is arranged on the knuckle, a fourth connecting hole is arranged on the mounting plate, the positions of the third connecting hole and the fourth connecting hole correspond to each other, and the second connecting bolt passes through the fourth connecting hole and is threadedly connected to the third connecting hole.

3. The braking installation structure according to claim 2, characterized in that, It further includes: A second positioning pin. A third pin hole is arranged on the mounting plate, a fourth pin hole is arranged on the knuckle, the axes of the third pin hole and the fourth pin hole coincide with each other, and both the third pin hole and the fourth pin hole are in interference fit with the second positioning pin.

4. The braking installation structure according to claim 3, characterized in that, It further includes: A second ejector. A second ejector hole is arranged on the mounting plate, the axis of the second ejector hole is perpendicular to the mounting plate, the second ejector is threadedly connected to the second ejector hole, and the end of the second ejector is adapted to abut against the knuckle.

5. The braking installation structure according to claim 3, characterized in that, A plurality of the third connecting holes are arranged, and the third connecting holes are spaced apart from each other around the axis of the wheel hub; A plurality of the fourth pin holes are arranged, and the fourth pin holes are spaced apart from each other around the axis of the wheel hub.

6. The braking installation structure according to claim 1, characterized in that It further includes: A first connecting bolt. A first connecting hole is arranged on the wheel hub, a second connecting hole is arranged on the brake disc, the positions of the first connecting hole and the second connecting hole correspond to each other, and the first connecting bolt passes through the second connecting hole and is threadedly connected to the first connecting hole.

7. The brake mounting structure according to claim 6, wherein, It further includes: A first positioning pin. A first pin hole is arranged on the brake disc, a second pin hole is arranged on the wheel hub, the axes of the first pin hole and the second pin hole are both parallel to the axis of the brake disc, and both the first pin hole and the second pin hole are in interference fit with the first positioning pin.

8. The braking installation structure according to claim 7, characterized in that, It further includes: A first ejector. A first ejector hole is arranged on the brake disc, the axis of the first ejector hole is parallel to the axis of the brake disc, the first ejector is threadedly connected to the first ejector hole, and the end of the first ejector is adapted to abut against the wheel hub.

9. The braking installation structure according to claim 1, characterized in that The brake disc is an integrally formed structure; And / or, the material of the brake disc is aluminum alloy material.

10. An integrated foundation braking device, characterized in that, It includes the brake mounting structure according to any one of claims 1 to 9.

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