Disc brake and switching method of different working modes of disc brake

Abstract

The invention relates to the technical field of brakes, and discloses a disc brake and a switching method of different working modes of the disc brake. Comprising a cylinder body; the connector is positioned at the top of the cylinder body and is used for controlling the pressure disc to move; the interior of the cylinder body is connected with the rotor in a rotating mode, the bottom of the pressure disc is arranged above the rotor, the top of the pressure disc is connected with the bottom of the connecting column in a welding mode, a through hole is formed in the connecting column, a ball is arranged in the through hole, a piston rod is arranged in the connecting column, and the connector and the connecting column are promoted to return to the original position again. After returning, a piston rod of a coil of the connector moves upwards to promote tight combination of the connector and the connecting column, at the moment, a piston of the brake and the pressure disc are also tightly combined together, and when the brake needs to be opened to be in a release state, only the piston of the oil cylinder needs to be controlled to eject out, and the steps are repeated. And the effect of quickly braking the rotor can be achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of brakes, in particular to a disc brake and a conversion method of different working modes thereof. BACKGROUND

[0002] A brake is a device with the function of decelerating, stopping or keeping a moving part (or moving machine) in a stopped state. It is a mechanical part that stops or decelerates the moving part in a machine.

[0003] When the working device of an electric shovel, a dragline, a dump truck or the like needs to be braked, a disc brake is used to brake the electric shovel.

[0004] The working mode of the existing disc brake is power-off braking, and the principle is to open by air pressure or hydraulic pressure and brake by spring after power-off.

[0005] In some application scenarios, the disc brake is required to brake quickly within 100 milliseconds after power-off, but the existing disc brake cannot brake quickly within 100 milliseconds after power-off.

[0006] In low-temperature or high-humidity air application scenarios, the air pressure circuit is prone to failure, which may cause the electromagnetic valve core to rust and cause jamming or icing blockage.

[0007] A large disc brake controlled by hydraulic pressure is too large in radial size and is not suitable for application in a narrow space.

[0008] Different working modes (air pressure or hydraulic pressure) are usually only one working mode of the existing disc brake, and the disc brake cannot be adjusted and converted for different application scenarios. SUMMARY

[0009] The application aims to provide a disc brake that can brake quickly within 100 milliseconds after power-off, and a structure thereof and a conversion method thereof for different application scenarios, so as to realize the conversion between a quick braking working mode, a pneumatic braking working mode and a hydraulic braking working mode, and solve the problems in the background art.

[0010] To solve the above technical problems, the application provides the following technical scheme: a disc brake, comprising:

[0011] a cylinder body;

[0012] a connector located at the top of the cylinder body, the connector being used to control the movement of a pressure disc;

[0013] The inside of the cylinder is connected with the rotor in the form of rotation, the upper part of the pressure disc is connected with the bottom of the connecting column in the form of welding, the connecting column is provided with a through hole, the through hole is provided with a ball, the inside of the connecting column is provided with a piston rod, the piston rod is provided with a groove, the groove is matched with the ball, the piston rod is connected with the inside of the connecting column through the ball, the outer wall of the connecting column is connected with the inner wall of the connector in the form of embedding, the outer wall of the top of the connector is fixedly connected with the fixed plate, and the fixed plate is fixedly connected with the brake piston.

[0014] Preferably, the outer wall of the rotor is provided with a wear-resistant disc, the wear-resistant disc is connected with the inner wall of the cylinder through a guide column, and the upper part of the wear-resistant disc is connected with the cylinder through the guide column.

[0015] Preferably, the top of the connector is connected with a coil, the piston rod penetrates through the connector, and the top of the piston rod is located in the inside of the coil.

[0016] Preferably, the top of the cylinder is movably connected with the brake piston, the brake piston is connected with the output end of the oil cylinder through fasteners, the oil cylinder is connected with the cylinder through fasteners, and the oil cylinder is symmetrically distributed on the brake piston.

[0017] Preferably, one side of the inside of the cylinder is provided with a main spring, the top of the main spring is located at the bottom of the inner wall of the cylinder, and the bottom end of the main spring is located at the top of the pressure disc.

[0018] Preferably, the top and the bottom of the intermediate disc are respectively provided with friction plates, one end of the intermediate disc is provided with a first separation spring, and the first separation spring is connected with the friction plates at the top and the bottom of the intermediate disc respectively.

[0019] Preferably, one end of the inside of the cylinder away from the first separation spring is provided with a second separation spring, the bottom of the second separation spring is located on the wear-resistant disc, and the top of the second separation spring is located at the bottom of the intermediate disc.

[0020] Preferably,

[0021] S1: for some application scenarios, it is necessary to control the action of the brake by using air pressure. The oil cylinder can be cancelled, and the plug brake conversion is installed to be in the air working mode;

[0022] S2: the oil cylinder and the sleeve are cancelled, the plug is screwed into the corresponding threaded hole, the brake piston and the pressure disc are connected into a whole through connecting bolts, when it is needed to open the brake to make the rotor rotate freely, high-pressure air is filled into the cavities of the air cylinder and the brake piston, so that the brake piston is lifted together with the pressure disc, the main spring is compressed, the pressure disc is separated from the friction plate, and the braking torque is eliminated.

[0023] S3: When braking is needed, only the air pressure in the cavity of the air cylinder is released, and the pressure plate is pressed onto the friction plate under the action of the main spring to generate a braking torque.

[0024] Compared with the prior art, the application has the following beneficial effects:

[0025] First, the piston rod and the oil cylinder or the electric push rod are arranged, so that when the output shaft of the oil cylinder is pushed out, the brake piston compresses the main spring together with the connector to drive the pressure plate to move upward by about 3-5 mm, the braking pressure on the rotor is released, and the rotor can rotate freely. At this time, the brake is in a released state. When the connector coil is powered off, the connector and the engaging column are relatively separated by 3-5 mm, the pressure plate is pressed onto the rotor under the action of the main spring to generate a braking torque, and at this time, the brake is in a braking state. At the same time, the oil cylinder is retracted to move the brake piston and the connector downward, so that the connector and the engaging column are reset. After reset, the connector coil is moved upward by the piston rod to tightly combine the connector and the engaging column. At this time, the brake piston and the pressure plate are also tightly combined. When the brake needs to be opened and the brake is in a released state, only the piston of the oil cylinder is pushed out to repeat the above steps, so that the braking pressure is quickly applied to the rotor to generate a braking torque. The above working mode belongs to the quick braking working mode of the application.

[0026] Second, in the application scenario where the braking response time requirement is not high, the hydraulic control mode can be converted. Specifically, the mechanical connector is cancelled, the brake piston and the pressure plate are connected as a whole through connecting bolts, the oil cylinder piston is pushed out to compress the main spring when the brake needs to be opened to make the rotor rotate freely, the pressure plate is separated from the friction plate to eliminate the braking torque, and the oil cylinder piston is retracted to press the pressure plate onto the friction plate under the action of the main spring to generate a braking torque when braking is needed.

[0027] Third, in the application scenario where pneumatic control is needed, the pneumatic working mode can be converted. Specifically, the oil cylinder and the sleeve are cancelled, plugs are screwed into the corresponding threaded holes, the brake piston and the pressure plate are connected as a whole through connecting bolts, high-pressure air is filled into the cavities of the air cylinder and the brake piston when the brake needs to be opened to make the rotor rotate freely, so that the brake piston and the pressure plate are lifted together to compress the main spring, and the pressure plate is separated from the friction plate to eliminate the braking torque. When braking is needed, only the air pressure in the cavity of the air cylinder is released, and the pressure plate is pressed onto the friction plate under the action of the main spring to generate a braking torque. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a front view of the quick braking working mode of the application.

[0029] Figure 2 Fig. 1 is a schematic diagram of the piston rod moving structure of the invention;

[0030] Figure 3 Fig. 2 is a schematic diagram of the connector and engaging column structure of the invention;

[0031] Figure 4 Fig. 3 is a schematic diagram of the piston rod inside position structure of the invention;

[0032] Figure 5 Fig. 4 is a schematic diagram of the engaging column and piston rod inside structure of the invention;

[0033] Figure 6 Fig. 5 is a schematic diagram of the ball and groove inside structure of the invention;

[0034] Figure 7 Fig. 6 is a schematic diagram of the through hole structure of the engaging column of the invention;

[0035] Figure 8 Fig. 7 is a schematic diagram of the brake disc brake piston outside structure of the hydraulic brake working mode of the invention.

[0036] Figure 9 Fig. 8 is a schematic diagram of the brake disc brake piston inside structure of the pneumatic brake working mode of the invention.

[0037] Figure 10 Fig. 9 is a schematic diagram of the brake disc brake piston outside structure of the pneumatic brake working mode of the invention.

[0038] Wherein: 1, cylinder; 2, rotor; 3, guide column; 4, brake piston; 5, connector; 6, piston rod; 7, coil; 8, fixed plate; 9, oil cylinder; 10, main spring; 11, first separation spring; 12, second separation spring; 13, pressure disc; 14, wear-resistant disc; 15, adjusting pad; 16, intermediate disc; 17, engaging column; 18, ball; 19, groove; 20, through hole; 21, friction plate; 22, external thread sleeve; 23, plug. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the invention will be clearly and completely described below with reference to the drawings in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all the embodiments of the invention. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the invention.

[0040] Please refer to Figures 1-10 A disc brake and a conversion method of different working modes thereof, comprising:

[0041] Cylinder 1;

[0042] The connector 5 at the top of the cylinder body 1 is used to control the movement of the pressure disc 13.

[0043] The inside of the cylinder body 1 is connected to the rotor 2 in a rotating manner. The bottom of the pressure disc 13 is arranged above the rotor 2. The top of the pressure disc 13 is connected to the bottom of the connecting column 17 in a welding manner. The through hole 20 is arranged in the connecting column 17. The ball 18 is arranged in the through hole 20. The piston rod 6 is arranged in the connecting column 17. The recess 19 is arranged in the piston rod 6. The recess 19 is matched with the ball 18. The piston rod 6 is connected to the inside of the connecting column 17 through the ball 18. The outer wall of the connecting column 17 is connected to the inner wall of the connector 5 in an embedding manner. The top outer wall of the connector 5 is fixedly connected to the fixed plate 8. The fixed plate 8 is fixedly connected to the brake piston 4. When the output shaft of the oil cylinder 9 is ejected, the brake piston 4, together with the connector 5, compresses the main spring 10, drives the pressure disc 13 to move upward by about 3-5 mm, and the brake pressure on the rotor 2 is released to rotate freely. At this time, the brake is in a released state. When the coil 7 of the connector 5 is powered off, the connector 5 is separated from the connecting column 17 by 3-5 mm. The pressure disc 13 is pressed onto the rotor 2 to generate a brake torque under the action of the main spring 10. At this time, the brake is in a braking state. At the same time, the oil cylinder 9 is retracted to drive the brake piston 4 and the connector 5 to move downward, so that the connector 5 and the connecting column 17 are reset. After resetting, the coil 7 of the connector 5 is moved upward by the piston rod 6 to drive the connector 5 and the connecting column 17 to be tightly combined. At this time, the brake piston 4 and the pressure disc 13 are also tightly combined. When it is needed to open the brake to make the brake in a released state, the above steps can be repeated by controlling the piston ejection of the oil cylinder 9.

[0044] Specifically, the outer wall of the rotor 2 is provided with the wear-resistant disc 14. The wear-resistant disc 14 is connected to the inner wall of the cylinder body 1 through the guide column 3. The top of the wear-resistant disc 14 is provided with the intermediate disc 16. The intermediate disc 16 is connected to the cylinder body 1 through the guide column 3.

[0045] Through the above technical solution, the wear-resistant disc 14 is usually connected to other parts of the brake through positioning supports and fastening screws, so as to ensure that the wear-resistant disc 14 is concentric with the rotor 2 or related parts of the brake, so as to ensure the stability and accuracy during braking. According to the description of the present application Figure 9 It can be seen that the oil cylinder can be replaced by the plug 23, so that it works in a pneumatic braking mode. According to the description of the present application Figure 10 It can be seen that the outer wall of the part of the oil cylinder 9 located in the cylinder body 1 is provided with the external thread sleeve 22.

[0046] Specifically, the top of the connector 5 is connected with the coil 7. The piston rod 6 penetrates through the connector 5. The top of the piston rod 6 is located in the coil 7.

[0047] By the above technical scheme, the existing disc brake cannot adjust the form of the disc brake according to different use scenarios, and can only replace different brakes according to use needs, and the present application can be adjusted according to different use scenarios. Figure 8 and the accompanying drawings Figure 9 In order to cancel the use effect of the connector, at this time the brake is in a hydraulic working mode.

[0048] Specifically, the cylinder body 1 is movably connected to the brake piston 4 at the top, the brake piston 4 is connected to the output end of the oil cylinder 9 by fasteners, the oil cylinder 9 is connected to the cylinder body 1 by fasteners, and the oil cylinder 9 is symmetrically distributed or uniformly distributed on the brake piston 4.

[0049] Through the above technical scheme, the disc brake of the present application is applied to the working scene of emergency braking in case of power failure, and the brake is immediately locked when power failure occurs, that is, the pressure disc 13 is pressed onto the rotor 2 to apply braking, and the brake can be slowly opened to release the rotation of the rotor 2 when the brake is opened.

[0050] Specifically, the cylinder body 1 is movably connected to the brake piston 4 at the top, the brake piston 4 is connected to the output end of the oil cylinder 9 by fasteners, the oil cylinder 9 is connected to the cylinder body 1 by fasteners, and the oil cylinder 9 is symmetrically distributed or uniformly distributed on the brake piston 4.

[0051] Through the above technical scheme, the main spring 10 is used to support and limit the pressure disc 13, and the pressure disc 13 is also used to brake the rotor 2.

[0052] Specifically, the intermediate disc 16 is provided with friction plates 21 at the top and the bottom, respectively, and the intermediate disc 16 is provided with a first separation spring 11 at one end, and the first separation spring 11 is connected to the friction plates 21 at the top and the bottom of the intermediate disc 16, respectively.

[0053] Through the above technical scheme, the first separation spring 11 is used for separation work of the friction plates 21, and a limiting column is arranged in the middle of the first separation spring 11 and the second separation spring 12 to prevent tilting.

[0054] Specifically, the second separation spring 12 is arranged in the cylinder body 1 away from the first separation spring 11, the bottom of the second separation spring 12 is located on the wear-resistant disc 14, and the top of the second separation spring 12 is located on the bottom of the intermediate disc 16.

[0055] Through the above technical scheme, the second separation spring 12 is used for separation of the friction disc and the intermediate disc 16, to prevent them from tilting and sticking together.

[0056] Specifically,

[0057] S1: for some application scenarios, the action of the brake needs to be controlled by air pressure. The application can cancel the oil cylinder 9 and install a plug brake conversion adjustment to the pneumatic working mode;

[0058] S2: cancel the oil cylinder 9 and the sleeve, and screw the plug into the corresponding threaded hole. The brake piston 4 and the pressure plate 13 are connected as a whole by the connecting bolt. When it is needed to open the brake to make the rotor 2 freely rotate, high-pressure air can be filled into the cavity of the brake piston 4 and the air cylinder 9, so as to lift the brake piston 4 together with the pressure plate 13, thereby compressing the main spring 10, and the pressure plate 13 is separated from the friction plate 21 to eliminate the braking torque.

[0059] S3: when braking is needed, only the air pressure in the air cylinder cavity is released, and the pressure plate is pressed onto the friction plate 21 under the action of the main spring 10 to generate a braking torque.

[0060] In use, first, when the output shaft of the oil cylinder 9 is ejected, the brake piston 4 together with the pressure plate 13 compresses the main spring 10 to move upward by about 3-5 mm, and the brake pressure on the rotor 2 is released to freely rotate. At this time, the brake is in the released state. When the brake is de-energized, the piston of the oil cylinder 9 retracts by 3-5 mm, and the pressure plate 13 is pressed onto the rotor 2 under the action of the main spring 10 to generate a braking torque. At this time, the brake is in the braking state. When the brake needs to be opened to make the brake in the released state, only the piston of the oil cylinder 9 is controlled to be ejected to repeat the above steps, and the work can be completed.

[0061] It should be noted that, in the present text, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0062] Finally, it should be noted that: the above only describes the preferred embodiments of the application, and is not used to limit the application. Although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. A disc brake, characterized in that: include: Cylinder (1); A connector (5) located at the top of the cylinder (1), the connector (5) being used to control the movement of the pressure plate (13); The cylinder body (1) is connected to the rotor (2) in a rotating manner. The bottom of the pressure plate (13) is provided above the rotor (2). The top of the pressure plate (13) is connected to the bottom of the connecting column (17) by welding. The connecting column (17) is provided with a through hole (20). A ball (18) is provided inside the through hole (20). The connecting column (17) is provided with a piston rod (6). The piston rod (6) is provided with a groove (19). The groove (19) fits the ball (18). The piston rod (6) is connected to the inside of the connecting column (17) through the ball (18). The outer wall of the connecting column (17) is connected to the inner wall of the connector (5) in an embedded manner. The outer wall of the top of the connector (5) is fixedly connected to the fixing plate (8), and the fixing plate (8) is fixedly connected to the brake piston (4).

2. A disc brake according to claim 1, characterized in that: The outer wall of the rotor (2) is provided with a wear-resistant disc (14), and the wear-resistant disc (14) is connected to the inner wall of the cylinder (1) through a guide column (3). An intermediate disc (16) is provided above the wear-resistant disc (14), and the intermediate disc (16) is connected to the cylinder (1) through the guide column (3).

3. The disc brake according to claim 1, characterized in that: The top of the connector (5) is connected to a coil (7), the piston rod (6) passes through the connector (5), and the top of the piston rod (6) is located inside the coil (7).

4. The disc brake according to claim 1, characterized in that: The top of the cylinder body (1) is movably connected to the brake piston (4), and the brake piston (4) is fastened to the output end of the oil cylinder (9). The oil cylinder (9) is connected to the cylinder body (1) via the fastener, and the oil cylinder (9) is symmetrically distributed on the brake piston (4).

5. The disc brake according to claim 1, characterized in that: A main spring (10) is provided on one side of the interior of the cylinder body (1), the top of the main spring (10) is located at the bottom of the inner wall of the cylinder body (1), the bottom end of the main spring (10) is located at the top of the pressure plate (13), and an adjustment pad (15) is provided on the outer wall of the cylinder body (1).

6. The disc brake according to claim 2, characterized in that: The top and bottom of the intermediate disk (16) are respectively provided with friction plates (21), and one end of the intermediate disk (16) is provided with a first separation spring (11), and the first separation spring (11) is respectively connected to the friction plates (21) at the top and bottom of the intermediate disk (16).

7. The disc brake according to claim 6, characterized in that: A second separation spring (12) is provided at one end of the cylinder body (1) away from the first separation spring (11), the bottom of the second separation spring (12) is located on the wear-resistant disk (14), and the top of the second separation spring (12) is located at the bottom of the intermediate disk (16).

8. A method for switching between different operating modes of a disc brake according to claims 1 to 7, characterized in that: S1: For some application scenarios, air pressure is needed to control the action of the brake. This application can eliminate the oil cylinder (9) and install a plug brake to convert it into a pneumatic working mode; S2: The oil cylinder (9) and the sleeve are removed, and plugs are screwed into the corresponding threaded holes. The brake piston (4) and the pressure plate (13) are connected to form a whole by connecting bolts. When the brake needs to be opened to allow the rotor (2) to rotate freely, high-pressure air can be filled into the cavities of the cylinder (9) and the brake piston (4), thereby lifting the brake piston (4) together with the pressure plate (13), thereby compressing the main spring (10), separating the pressure plate (13) and the friction plate (21), and eliminating the braking torque; S3: When braking is required, the air pressure in the cylinder cavity is simply released, and the pressure plate is pressed onto the friction plate (21) under the action of the main spring (10) to generate a braking torque.

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