CN215890877U

CN215890877U - Braking device

Info

Publication number: CN215890877U
Application number: CN202122294942.3U
Authority: CN
Inventors: 杨志明; 邱永玉; 张初灯
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-02-22
Anticipated expiration: 2031-09-22

Abstract

The utility model relates to the field of sports equipment, in particular to a braking device, which comprises an inertia wheel; the fixed seat is rotatably connected with the inertia wheel; one end of the braking mechanism is arranged on the inertia wheel or the fixed seat, and the other end of the braking mechanism can be close to or far away from the fixed seat or the inertia wheel; when the braking mechanism is not driven, the other end of the braking mechanism is abutted against the fixed seat or the inertia wheel so as to brake and stop the inertia wheel, and self-locking is realized. Install on flywheel or fixing base through arrestment mechanism one end, but other end fixing base or flywheel are close to or keep away from relatively, and arrestment mechanism does not receive when the drive, arrestment mechanism's the other end offsets so that the flywheel stops to stop and has solved prior art and need just can realize the brake when receiving the drive with fixing base or flywheel, do not have self-locking function, when child touching or maloperation appear, easy unexpected emergence causes personnel injured's problem, thereby guarantee that the flywheel can not rotate under normal condition, reduce danger, guarantee safety.

Description

Braking device

Technical Field

The utility model relates to the field of sports equipment, in particular to a braking device.

Background

Braking, i.e. deceleration, stops the rotating wheel by reducing the speed of the rotating wheel, and the principle of the braking action is that kinetic energy is converted into heat energy to be consumed.

CN201320231587 patent "brake adjusting device for exercise bike", published as 2013.09.25, discloses a brake adjusting device for exercise bike, which comprises a frame, the upper part of the frame is provided with a handrail, the lower part of the frame is provided with a pedal, the pedal is connected with a flywheel, the brake adjusting device for exercise bike comprises: friction disc, mounting bracket and top piece. Wherein, the lower part of the friction plate is connected to the frame through a spring plate, and the front part of the friction plate is matched with the flywheel; the mounting rack is fixed on the frame; the middle part of the top plate is hinged to the front part of the mounting frame, the front end of the top plate is matched with the rear surface of the friction plate, the rear end of the top plate is connected with a fine adjustment pull wire and a brake pull wire, the other end of the fine adjustment pull wire is connected with a fine adjustment knob, and the other end of the brake pull wire is connected with a brake wrench. The utility model has the advantages that: the damping that can be convenient to this exercise bicycle has adjusts and can in time brake.

However, this brake adjusting device just can realize the brake when needing to receive the drive, does not have self-locking function, when child's touching or maloperation appear, and easy accident takes place, causes personnel's injury.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects that the brake adjusting device in the prior art can realize braking when being driven, has no self-locking function, and is easy to cause accidents and personal injuries when children touch or operate by mistake, the utility model provides a braking device, which comprises

An inertia wheel;

the fixed seat is connected with the inertia wheel in a rotating way;

one end of the braking mechanism is arranged on the inertia wheel or the fixed seat, and the other end of the braking mechanism can be close to or far away from the fixed seat or the inertia wheel;

when the braking mechanism is not driven, the other end of the braking mechanism abuts against the fixed seat or the inertia wheel so that the inertia wheel is braked and stopped, and self-locking is achieved.

In one embodiment, the braking mechanism comprises an electromagnetic control part, a brake iron base plate, a brake pad and at least one resetting part;

the brake pad is arranged on the brake iron substrate;

one end of the reset piece is abutted to the electromagnetic control piece, and the other end of the reset piece is connected with the brake iron substrate.

In one embodiment, the electromagnetic control is fixedly connected with the inertia wheel, and the brake pad can be close to or far away from the fixed seat relative to the fixed seat, wherein when the electromagnetic control is powered off, the brake pad is abutted against the fixed seat;

or the electromagnetic control is fixedly connected with the fixed seat, the brake pad can be close to or far away from the inertia wheel relative to the inertia wheel, and when the electromagnetic control is powered off, the brake pad is abutted against the inertia wheel.

In an embodiment, the electromagnetic control includes a brake electromagnet and an electromagnet coil, and the brake electromagnet is provided with a coil groove and a reset piece groove for mounting the electromagnet coil and the reset piece, respectively.

In one embodiment, the reset piece is arranged on the inner side or the outer side of the electromagnet coil; the inner side of the electromagnet coil refers to one side of the electromagnet coil close to the center of the inertia wheel, and the outer side of the electromagnet coil refers to one side of the electromagnet coil far away from the center of the inertia wheel.

In one embodiment, the braking mechanism further comprises a limiting guide rod, and the brake iron base plate is slidably arranged on the limiting guide rod.

In one embodiment, the inertia wheel includes a wheel core, a rim and a hub;

the inertia wheel is a cast iron wheel, a steel plate wheel or an assembly wheel.

In one embodiment, the flywheel is an assembly wheel; the wheel core, the rim and the hub are processed separately, the hub is fixedly connected with the rim and the wheel core through one of welding, riveting, screw fixedly connecting and glue fixedly connecting modes,

and the mass of the rim is the largest among the wheel core, the rim and the hub.

In one embodiment, the relative positions of the wheel core, the rim and the hub are adjustable to mount other components.

In one embodiment, the wheel core, the rim and the hub are made of materials with uniform density respectively so as to be fixedly connected together without calibrating dynamic balance.

Based on the above, compared with the prior art, according to the braking device provided by the utility model, one end of the braking mechanism is arranged on the inertia wheel or the fixed seat, the other end of the braking mechanism can be close to or far away from the fixed seat or the inertia wheel, and when the braking mechanism is not driven, the other end of the braking mechanism abuts against the fixed seat or the inertia wheel so as to brake the inertia wheel, so that the problem that braking can be realized only when the braking mechanism is driven in the prior art, and the braking device has no self-locking function, and when a child touches or operates by mistake, accidents are easy to occur to cause injury of personnel is solved, so that the inertia wheel can not rotate under a normal state, danger is reduced, and safety is ensured.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts; in the following description, the drawings are illustrated in a schematic view, and the drawings are not intended to limit the present invention.

FIG. 1 is a side view of a brake apparatus provided by the present invention;

FIG. 2 is a cross-sectional view of the power failure of embodiment 1 provided by the present invention;

FIG. 3 is a cross-sectional view of the embodiment 1 of the present invention when energized;

FIG. 4 is a cross-sectional view of the power failure of embodiment 2 provided by the present invention;

FIG. 5 is a cross-sectional view of the embodiment 2 of the present invention when energized;

fig. 6 is a cross-sectional view of the reset member of the present invention disposed inside the electromagnet coil;

fig. 7 is a cross-sectional view of the reset member provided in the present invention disposed outside the electromagnet coil;

FIG. 8 is a cross-sectional view of a flywheel provided by the present invention;

FIG. 9 is a disk hub provided by the present invention;

FIG. 10 is a spoke-like hub provided by the present invention;

FIG. 11 is a view of the hub with a circular hole for material reduction or installation provided by the present invention.

Reference numerals:

100. inertia wheel 110, wheel core 111, mandrel hole

120. Rim 121, first surface 122, second surface

130. Hub 140, mounting part 200 and fixing seat

300. Brake mechanism 310, electromagnetic control 311 and brake electromagnet

312. Electromagnet coil 320, brake iron substrate 330 and brake pad

340. Reset piece 350, limiting guide rod 400 and mandrel

3111. Coil groove 3112 and reset piece groove

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments; the technical features designed in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be noted that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, and are not to be construed as limiting the present invention; it will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Specific examples are given below:

a braking device can be used for sports equipment, such as but not limited to fitness equipment (such as exercise bicycle, rowing machine), mechanical equipment and other instruments requiring an inertia wheel 100 and a braking mechanism 300;

specifically, with reference to fig. 1-5, the braking device includes an inertia wheel 100;

a fixed seat 200 rotatably connected with the flywheel 100;

a brake mechanism 300, one end of the brake mechanism 300 is mounted on the flywheel 100 or the fixing base 200, and the other end of the brake mechanism 300 can be close to or far away from the fixing base 200 or the flywheel 100;

when the braking mechanism 300 is not driven, the other end of the braking mechanism 300 abuts against the fixed seat 200 or the inertia wheel 100 so that the inertia wheel 100 is braked and stopped, thereby realizing self-locking.

In practice, the flywheel 100 is rotatably connected to the fixing base 200 through the spindle 400, and the braking mechanism 300 is used for controlling the operation and braking of the flywheel 100. The fixing base 200 is a fixing base for fixing the flywheel 100, and may be a fixed member such as a fixing plate.

One end of the braking mechanism 300 is mounted on the flywheel 100, and the other end of the braking mechanism 300 can be close to or far away from the fixed seat 200, when the braking mechanism 300 is not driven, the other end of the braking mechanism 300 is abutted against the fixed seat 200 so as to brake and stop the flywheel 100, thereby realizing self-locking;

or, one end of the braking mechanism 300 is mounted on the fixing base 200, and the other end of the braking mechanism 300 can be close to or far away from the flywheel 100, and when the braking mechanism 300 is not driven, the other end of the braking mechanism 300 abuts against the flywheel 100 to brake the flywheel 100, so that self-locking is realized.

Compared with the prior art, according to the braking device provided by the utility model, one end of the braking mechanism is arranged on the inertia wheel or the fixed seat, the other end of the braking mechanism can be close to or far away from the fixed seat or the inertia wheel, and when the braking mechanism is not driven, the other end of the braking mechanism is abutted against the fixed seat or the inertia wheel so as to brake the inertia wheel, so that the problem that braking can be realized only when the braking mechanism is driven in the prior art, a self-locking function is not provided, and when a child touches or operates by mistake, accidents are easy to occur to cause injury of personnel is solved, so that the inertia wheel can not rotate under a normal state, danger is reduced, and safety is ensured.

Specifically, referring to fig. 2 to 5, the braking mechanism 300 includes an electromagnetic control 310, a brake iron base plate 320, a brake pad 330, and at least one reset element 340; the brake pad 330 is arranged on the brake iron base plate 320; one end of the reset piece 340 is abutted against the electromagnetic control 310, and the other end of the reset piece 340 is connected with the brake iron base plate 320. The reset piece 340 can be provided in a plurality according to the actual reset force. The reset piece 340 can be a spring, and is convenient to use.

Because the traditional brake uses a mechanical brake (stopping) device, the mechanical brake (stopping) device has the problems of large volume and complex structure, after a brake handle is pulled, a brake friction plate is pressed through steel wires or other mechanical transmission, the response is slow, the pulling of the brake handle requires great strength, in an emergency situation, the brake steel wires or other transmission mechanisms can not be effectively operated in time, the brake steel wires or other transmission mechanisms are easy to lose efficacy after long service time, and after the brake (sudden stop) is finished, the brake device needs to be reset through manual operation.

The brake iron base plate 320 and the brake pad 330 are sucked back or ejected out through the electromagnetic control 310 and the reset piece 340, so that the brake unlocking or braking of the inertia wheel 100 is realized, the braking is rapid and efficient through the action of the electromagnetic control 310 and the reset piece 340, and the self-locking and automatic unlocking functions can be realized. The problems that a mechanical brake device is complex in structure, slow in response, labor-consuming, easy to lose efficacy and required to be reset manually are solved, and therefore the mechanical brake device is simple in structure, fast in response, labor-saving, efficient and has the functions of self-locking and automatic unlocking.

Specifically, referring to fig. 2 to 5, the electromagnetic control 310 includes a brake electromagnet 311 and an electromagnet coil 312, and a coil groove 3111 and a reset piece groove 3112 are disposed on the brake electromagnet 311 and are respectively used for mounting the electromagnet coil 312 and the reset piece 340. Electromagnet coil 312 and reset piece 340 are installed through coil groove 3111 and reset piece groove 3112, and the installation is stable and not easy to drop out.

In practice, the brake electromagnet 311 is fixed to the hub 130 or the fixed base 200 of the flywheel 100 by bolts. When the electromagnet coil 312 is energized, the brake electromagnet 311 generates a magnetic field to attract the brake iron base plate 320, and when the brake electromagnet is de-energized, the magnetic field disappears, and the brake iron base plate 320 is reset under the action of the reset piece 340.

Specifically, the present invention provides two mounting methods of the braking mechanism 300: in embodiment 1, referring to fig. 2 to 3, the electromagnetic control 310 is fixedly connected to the inertia wheel 100, and the brake pad 330 can move closer to or away from the fixing base 200; specifically, the electromagnetic control 310 is fixedly connected to the hub 130, the fixedly connecting mode may be a bolt fixing mode or other modes, when the electromagnet coil 312 is energized, the brake electromagnet 311 generates a magnetic field, the brake iron substrate 320 and the brake pad 330 are attracted to the brake electromagnet 311, at this time, the reset piece 340 is compressed, the brake pad 330 and the brake iron substrate 320 are separated from the fixing seat 200, the brake is unlocked, and the flywheel 100 can rotate, as shown in fig. 3; when the electromagnet coil 312 is powered off, the magnetic field of the brake electromagnet 311 disappears, the attraction force on the brake iron base plate 320 and the brake pad 330 is lost, and under the elastic force of the reset piece 340, the brake pad 330 and the brake iron base plate 320 are ejected out of the pressing fixing seat 200 to brake the inertia wheel 100, as shown in fig. 2. When the electromagnet coil 312 is powered off, the brake iron substrate 320 and the brake pad 330 compress the fixing seat 200 under the elastic action of the reset piece 340 to brake the inertia wheel 100, so that the misoperation of children or other situations is prevented, accidents are prevented, and self-locking is realized.

In embodiment 2, referring to fig. 4-5, or the electromagnetic control 310 is fixed to the fixing base 200, the brake pad 330 may be close to or far from the flywheel 100, specifically, the electromagnetic control 310 is fixed to the fixing base 200 by a bolt or other methods. When the electromagnet coil 312 is energized, the brake electromagnet 311 generates a magnetic field to attract the brake iron base plate 320 and the brake pad 330 to the brake electromagnet 311, at this time, the reset member 340 is compressed, the brake pad 330 and the brake iron base plate 320 are separated from the hub 130, the brake is unlocked, and the flywheel 100 can rotate, as shown in fig. 5; when the electromagnet coil 312 is powered off, the magnetic field of the brake electromagnet 311 disappears, the attraction force on the brake iron base plate 320 and the brake pad 330 is lost, and under the elastic force of the reset piece 340, the brake pad 330 and the brake iron base plate 320 are ejected out to press the hub 130, so as to brake the flywheel 100, as shown in fig. 4. When the electromagnet coil 312 is powered off, the brake iron substrate 320 and the brake pad 330 press the hub 130 under the elastic action of the reset piece 340 to brake the inertia wheel 100, so that the misoperation of children or other situations is prevented, accidents are prevented, and self-locking is realized.

Referring to fig. 2 to 5, the brake mechanism 300 further includes a limit guide rod 350, the brake iron base plate 320 is slidably disposed on the limit guide rod 350, and the limit guide rod 350 is connected to the brake electromagnet 311 by a screw or other means and is used for preventing the brake iron base plate 320 from having an excessively large movement stroke and assisting the brake iron base plate 320 in movement guidance. The limit guide rod 350 includes a rod portion and a limit portion, and the brake iron base plate 320 is slidably disposed on the rod portion and limited by the limit portion. The brake iron base plate 320 and the brake pad 330 are ejected or retracted along the rod portion under the control of the electromagnetic control 310 and the reset member 340, so as to achieve braking and braking unlocking of the inertia wheel 100.

Preferably, referring to fig. 6-7, a plurality of reset pieces 340 are provided, and the reset pieces 340 are provided inside or outside the electromagnet coil 312 to facilitate installation or prevent interference; the inner side of the electromagnet coil 312 refers to a side of the electromagnet coil 312 close to the center of the inertia wheel 100, that is, a side close to the mandrel 400, as shown in fig. 7; the outer side of the electromagnet coil 312 refers to the side of the electromagnet coil 312 away from the center of the inertia wheel 100, i.e., the side away from the spindle 400, as shown in fig. 6.

Preferably, with reference to fig. 8, the inertia wheel 100 includes a wheel core 110; a rim 120; a hub 130; the inertia wheel 100 is, but is not limited to, a cast iron wheel, a steel plate wheel, or an assembly wheel.

Preferably, the flywheel 100 is an assembly wheel; the wheel core 110, the rim 120 and the hub 130 are separately processed, the hub 130 is fixedly connected with the rim 120 and the wheel core 110 through one of welding, riveting, screw fixing and glue fixing modes, and the mass of the rim 120 is the largest in the wheel core 110, the rim 120 and the hub 130.

In practice, the wheel core 110 has a spindle hole 111 for installing the spindle 400, or the wheel core 110 and the spindle 400 are integrally formed.

The inertia wheel 100 is composed of three parts, namely a wheel core 110, a rim 120 and a hub 130, wherein the hub 130 is combined with the rim 120 and the wheel core 110 by one of welding, riveting, screw fixing and glue fixing modes to form the inertia wheel 100.

Preferably, the wheel core 110, the rim 120 and the hub 130 are made of materials with uniform density, and are fixed together without calibrating dynamic balance. Preferably, the rim 120 is annular and can be sawed or otherwise processed from steel tubing; the hub 130 is punched by a steel plate, and is punched into different shapes according to requirements (such as material reduction, device installation and the like), and the punched hub 130 has the advantages of accurate size, good consistency, good planeness and high strength; the wheel core 110 is machined by a steel pipe (steel bar), and the machining is easy and accurate in size. Because the rim 120, the hub 130 and the wheel core 110 are respectively made of steel pipes, steel plates and steel bars (pipes), the density is uniform, after the rim, the hub and the wheel core are fixed together, the overall dimension can be processed, dynamic balance calibration is not needed, the processing difficulty is reduced, and the cost is reduced.

Of the components of inertia wheel 100, rim 120 has the greatest mass fraction, i.e., according to the formula for moment of inertia

The further the mass of the object is distributed from the axis of rotation, the greater the moment of inertia of the object, and the greater the mass of the inertia wheel 100 is concentrated on the rim 120 to obtain the maximum moment of inertia. Thereby reducing the material cost and the processing cost of the inertia wheel 100, and obtaining the largest rotational inertia of the inertia wheel 100 with the same mass. Or the requirement of rotational inertia is met, the mass of the inertia wheel 100 is as small as possible, the cost is reduced, and the weight of the whole machine is reduced; the competitiveness of the product is improved.

Preferably, the relative positions of the wheel core 110, the rim 120 and the hub 130 are adjustable to mount other components, such as the hub 130 can be disposed at the center of the width of the inertia wheel 100, or offset from the center of the width of the inertia wheel 100, and adjusted according to the mounting requirements. Because the hub 130 is thin, the steel plate has good flatness, and the hub 130 has a relatively large space for mounting other components or mechanisms, preferably, the rim 120 includes a first surface 121 and a second surface 122 opposite to each other; the hub 130 is disposed adjacent to the second surface 122 and encloses with the rim 120 and the wheel core 110 to form a mounting portion 140 that opens toward the first surface 121 for mounting other components, such as the brake mechanism 300. The boss 130 is disposed adjacent to the second surface 122 to allow the mounting portion 140 to have a larger mounting space for mounting other components.

Preferably, referring to fig. 9-11, since the hub 130 is processed separately, one or more holes or slots may be formed on the hub 130 to save material or install other components, and specifically, the components may pass through the holes of the hub 130 to be installed on both end surfaces of the hub 130, and the holes may be circular holes or slots with other shapes, as required. The hub 130 with the plurality of holes has a lower mass, reducing the weight of the finished product.

Compared with the traditional method of producing the inertia wheel 100 by casting, the method has the problems that the casting shape is not regular enough, the surface is rough, the machining such as turning is needed, the machining cost is high, the turning waste is more, the internal structure is not uniform, air holes exist, after the turning machining, the inertia wheel needs to be dynamically balanced, the casting structure is not compact, the strength is lower, the hub 130 cannot be too thin, the mass of the inertia wheel 100 distributed on the rim 120 is quite small, and the inertia wheel 100 with the same mass is relatively small.

The inertia wheel 100 produced by the steel plate wheel is formed by overlapping a plurality of steel plates, the rim 120 is as large as the hub 130, the mass is uniformly distributed, and the inertia wheel 100 with the same mass has the problems of relatively smaller rotational inertia and high processing cost.

The hub 130 is fixedly connected with the rim 120 and the wheel core 110 through one of welding, riveting, screw fixedly connecting and glue fixedly connecting modes, the hub 130 can be independently processed, such as punching, and is high in strength, the hub 130 is thinner, the mass of the hub 130 is reduced, and the mass of the rim 120 is larger. The inertia wheel 100 with the same mass is ensured, and the rotational inertia as large as possible is obtained. Or the requirement of rotational inertia is met, the mass of the inertia wheel 100 is as small as possible, the cost is reduced, and the weight of the whole machine is reduced; the competitiveness of the product is improved.

In summary, compared with the prior art, according to the braking device provided by the utility model, one end of the braking mechanism is mounted on the inertia wheel or the fixed seat, the other end of the braking mechanism can be close to or far away from the fixed seat or the inertia wheel, and when the braking mechanism is not driven, the other end of the braking mechanism abuts against the fixed seat or the inertia wheel so as to brake the inertia wheel, so that the problem that braking can be realized only when the braking mechanism is driven in the prior art, a self-locking function is not provided, and when a child touches or operates by mistake, accidents are easy to occur to cause injury of personnel is solved, so that the inertia wheel can not rotate in a normal state, danger is reduced, and safety is ensured.

In addition, it will be appreciated by those skilled in the art that, although there may be many problems with the prior art, each embodiment or aspect of the present invention may be improved only in one or several respects, without necessarily simultaneously solving all the technical problems listed in the prior art or in the background. It will be understood by those skilled in the art that nothing in a claim should be taken as a limitation on that claim.

Although terms such as flywheel, holder, brake mechanism … …, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention; the terms "first," "second," and the like in the description and in the claims, and in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A brake apparatus, characterized in that: comprises that

An inertia wheel (100);

the fixed seat (200) is rotationally connected with the inertia wheel (100);

one end of the brake mechanism (300) is mounted on the inertia wheel (100) or the fixed seat (200), and the other end of the brake mechanism (300) can be close to or far away from the fixed seat (200) or the inertia wheel (100);

when the braking mechanism (300) is not driven, the other end of the braking mechanism (300) abuts against the fixed seat (200) or the inertia wheel (100) so that the inertia wheel (100) is braked and stopped, and self-locking is achieved.

2. The braking apparatus according to claim 1, characterized in that: the brake mechanism (300) comprises an electromagnetic control piece (310), a brake iron base plate (320), a brake pad (330) and at least one reset piece (340);

the brake pad (330) is arranged on the brake iron base plate (320);

one end of the reset piece (340) is abutted against the electromagnetic control (310), and the other end of the reset piece (340) is connected with the brake iron substrate (320).

3. The braking apparatus according to claim 2, characterized in that: the electromagnetic control piece (310) is fixedly connected with the inertia wheel (100), the brake pad (330) can be close to or far away from the fixed seat (200) relative to the fixed seat, and when the electromagnetic control piece (310) is powered off, the brake pad (330) is abutted against the fixed seat (200);

or the electromagnetic control piece (310) is fixedly connected with the fixed seat (200), the brake pad (330) can be close to or far away from the inertia wheel (100) relative to the inertia wheel, and when the electromagnetic control piece (310) is powered off, the brake pad (330) is abutted against the inertia wheel (100).

4. The braking apparatus according to claim 2, characterized in that: electromagnetic control (310) is including stopper electro-magnet (311) and electromagnet coil (312), be equipped with coil groove (3111) and reset piece groove (3112) on stopper electro-magnet (311) and be used for the installation respectively electromagnet coil (312) with reset piece (340).

5. The braking apparatus according to claim 4, characterized in that: the reset piece (340) is arranged on the inner side or the outer side of the electromagnet coil (312);

wherein, the inner side of the electromagnet coil (312) refers to the side of the electromagnet coil (312) close to the center of the inertia wheel (100), and the outer side of the electromagnet coil (312) refers to the side of the electromagnet coil (312) far away from the center of the inertia wheel (100).

6. The braking apparatus according to claim 2, characterized in that: the braking mechanism (300) further comprises a limiting guide rod (350), and the brake iron base plate (320) is arranged on the limiting guide rod (350) in a sliding mode.

7. The braking apparatus according to claim 1, characterized in that: the inertia wheel (100) comprises a wheel core (110), a wheel rim (120) and a wheel hub (130);

the inertia wheel (100) is a cast iron wheel, a steel plate wheel or an assembly wheel.

8. The braking apparatus according to claim 7, characterized in that: the inertia wheel (100) is an assembly wheel; the wheel core (110), the rim (120) and the hub (130) are processed separately, and the hub (130) is fixedly connected with the rim (120) and the wheel core (110) through one of welding, riveting, screw fixedly connecting and glue fixedly connecting modes,

and the mass of the rim (120) is the largest among the wheel core (110), the rim (120) and the hub (130).

9. The braking apparatus according to claim 7, characterized in that: the relative positions of the wheel core (110), the rim (120) and the hub (130) are adjustable for mounting a brake mechanism (300).

10. The braking apparatus according to claim 8, characterized in that: the wheel core (110), the rim (120) and the hub (130) are respectively made of materials with uniform density so as to be fixedly connected together without calibrating dynamic balance.