Brake brake, brake system and brake disc brake / brake release method

Abstract

The application discloses a brake disc brake, a brake system and a brake disc brake / loosen brake method, relates to the technical field of oil drilling equipment, and comprises a clamp body assembly with a brake gap, brake blocks are arranged on the two side walls of the brake gap, at least one brake block piston block is present, each piston block is in sliding connection with a piston hole in the clamp body assembly; the middle part of the piston block is provided with an annular boss, a first sealing structure is arranged between the outer side wall of the annular boss and the inner wall of the piston hole, and the two ends of the piston block are respectively provided with a third sealing structure and a second sealing structure between the piston hole; the piston hole space between the first sealing structure and the second sealing structure is a brake oil cavity, and the piston hole space between the first sealing structure and the third sealing structure is a loosen brake oil cavity. The application changes the original mode in which only the elastic force of a butterfly spring is used as a braking force, and utilizes hydraulic oil to make the braking force of the brake larger, so that the development demand of equipment large-scale and heavy-load can be met.

Description

Technical Field

[0001] This invention relates to the field of oil drilling equipment technology, and in particular to a brake disc brake, braking system, and brake disc braking / releasing method. Background Technology

[0002] Brakes are critical components for safety and performance in various heavy machinery and equipment. In the field of industrial braking, especially in oil drilling, large winches, cranes, and traveling jacks all require brakes for braking. Currently, the most commonly used brake is the single-acting caliper disc brake, which uses a spring-loaded, hydraulically released mechanism. Its working principle relies on a pre-compressed elastic element to provide braking force. When it is necessary to release the brake, pressurized oil is injected into the hydraulic cylinder to compress the spring, thus releasing the brake.

[0003] However, the braking force of this single-acting caliper disc brake is entirely determined by the elastic force of the elastic element, meaning there is an upper limit to the braking force. As equipment becomes larger and heavier, the limited spring braking force often fails to meet higher braking demands, becoming a bottleneck for system safety and performance.

[0004] Therefore, there is an urgent need in this field for a new type of brake with greater braking force. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems by providing a brake disc brake, a braking system, and a brake disc braking / releasing method. This changes the original method that only uses the elastic force of the disc spring as the braking force, and utilizes hydraulic oil to make the brake brake have a greater braking force, so as to meet the development needs of larger and heavier equipment.

[0006] The technical solution adopted in this invention is as follows: A brake disc brake device includes a caliper assembly, which has a brake notch for accommodating a brake disc. Brake blocks are mounted on both sides of the brake notch, and at least one brake block is acted upon by at least one piston block. Each piston block is slidably connected to a piston hole in the caliper assembly. The piston block has an annular boss in its middle portion. A first sealing structure is provided between the outer wall of the annular boss and the inner wall of the piston hole. A second sealing structure is provided between the end of the piston block away from the brake notch and the inner wall of the piston hole. A third sealing structure is provided between the end of the piston block near the brake notch and the inner wall of the piston hole. The piston hole space between the first and second sealing structures is a brake fluid chamber, and the piston hole space between the first and third sealing structures is a brake release fluid chamber. The caliper assembly has a brake fluid port communicating with the brake fluid chamber, and a brake release fluid port communicating with the brake release fluid chamber.

[0007] Furthermore, the end of the piston hole away from the brake notch is sealed by the cylinder head; a first elastic element is provided between the piston block and the cylinder head, and the first elastic element is always in a state of elastic potential energy.

[0008] Furthermore, the cylinder head is threadedly sealed to the piston bore.

[0009] Furthermore, the first sealing structure is a sealing ring, which is nested on the annular boss; And / or, the second sealing structure is a sealing ring, which is nested on the inner wall of the piston bore; And / or, the third sealing structure is a sealing ring, which is nested on the inner wall of the piston bore.

[0010] Furthermore, a brake oil leakage buffer groove is provided on the inner wall of the piston hole, and the second sealing structure is located between the brake oil leakage buffer groove and the first sealing structure. And / or, a brake release oil leakage buffer groove is provided on the inner wall of the piston hole, the third sealing structure is located between the brake release oil leakage buffer groove and the first sealing structure, and a fourth sealing structure is also provided between the piston block and the piston hole, with the brake release oil leakage buffer groove located between the third sealing structure and the fourth sealing structure. The clamp assembly is provided with an oil leakage port that is connected to the brake oil leakage buffer groove and the brake release oil leakage buffer groove respectively.

[0011] Furthermore, the brake block acted upon by the piston block is a movable brake block. If the movable brake block is not connected to the piston block, a stepped hole is provided on the caliper assembly. The stepped hole has a step, and a pull rod is installed in the stepped hole. One end of the pull rod is detachably connected to the movable brake block, and the other end of the pull rod has an end cap. A second elastic element is provided between the end cap and the step. The second elastic element is installed in a second posture. This second posture satisfies the requirement that when the movable brake block moves closer to other brake blocks, the elastic potential energy of the second elastic element increases.

[0012] Furthermore, the brake block acted upon by the piston block is a movable brake block, and the brake block not acted upon by the piston block is a fixed brake block, wherein: The fixed brake block is fixed to the inner wall of the brake notch; A constraint block is provided at the assembly position of the movable brake block. The constraint block is fixedly connected to the inner wall of the brake notch, and the constraint block has a constraint hole that matches the shape and size of the movable brake block. The axis of the constraint hole is parallel to the axis of the piston hole. The movable brake block is slidably connected to the constraint hole, and the sliding direction is along the axis of the constraint hole. The side wall of the movable brake block is always in contact with the hole wall of the constraint hole.

[0013] Furthermore, the brake block includes a movable brake block and a fixed brake block; the brake also includes a base, on which a floating column is fixed, the caliper assembly is slidably connected to the floating column, and the sliding stroke direction of the caliper assembly is parallel to the direction in which the movable brake block and the fixed brake block approach each other.

[0014] Furthermore, one end of the floating column is connected to the base, and the other end of the floating column is provided with a spring cover. A third elastic element is provided between the spring cover and the clamp assembly. The third elastic element is installed in a third posture. The second posture satisfies the condition that when the movable brake block and the fixed brake block move closer to each other, the elastic potential energy of the third elastic element increases.

[0015] Furthermore, a limit adjustment mechanism is provided between the caliper assembly and the base, and the limit adjustment mechanism limits the sliding stroke of the caliper assembly to c; when the brake disc is placed in the brake notch and the brake disc is in an unbraked state, the gap between the fixed brake block and the brake disc is b, and the maximum gap between the movable brake block and the brake disc is a, then b≤c<a+b.

[0016] Furthermore, the limit adjustment mechanism includes an upper limit component and multiple lower limit components. The upper limit component includes an upper limit screw and an upper limit cap. One end of the upper limit screw is connected to the base, and the upper limit cap is fixed to the other end of the upper limit screw. The lower limit component includes a lower limit screw and a lower limit cap. One end of the lower limit screw is connected to the base, and the lower limit cap is fixed to the other end of the upper limit screw. The threaded axis of the upper limit screw and the base, and the threaded axis of the lower limit screw and the base, are parallel to the direction in which the movable brake block and the fixed brake block approach each other. The clamp assembly is slidably connected to the upper limit screw, and the sliding stroke of the clamp assembly is located between the upper limit cap and the lower limit cap.

[0017] Furthermore, the clamp assembly includes a main clamp body, a connecting body, and a secondary clamp body connected by a handle. The connecting body is located between the main clamp body and the secondary clamp body. The distance between the main clamp body and the secondary clamp body is the braking notch, and the thickness of the connecting body is the notch width of the braking notch.

[0018] A braking system for a brake disc includes a brake actuator for the brake disc and a hydraulic oil supply system; the hydraulic oil supply system includes a hydraulic oil station and valves, and the hydraulic oil station is connected to all brake oil ports and brake release oil ports through the valves respectively.

[0019] A brake disc braking / releasing method, utilizing the aforementioned brake disc braking system, includes a brake disc braking step for braking the brake disc and a brake disc releasing step for releasing the brake disc, wherein: S1: Brake disc braking includes steps S11-S13; S11: Adjusting valve, the hydraulic oil supply system supplies hydraulic oil to the brake oil chamber through the brake oil port, and at the same time the hydraulic oil in the brake release oil chamber flows back to the hydraulic oil station through the brake release oil port. S12: Under the action of hydraulic oil in the brake oil chamber and the elastic potential energy of the first elastic element, the piston block pushes the brake blocks to move closer to each other. S13: The brake blocks located on both sides of the brake notch clamp the brake disc to brake the brake disc; S2: Brake disc release includes steps S21-S23; S21: Adjusting valve, the hydraulic oil supply system supplies hydraulic oil to the brake release chamber through the brake release port, while the hydraulic oil in the brake chamber flows back to the hydraulic oil station through the brake port. S22: The piston block is reset under the action of hydraulic oil in the brake release chamber, and at the same time overcomes the elastic potential energy of the first elastic element, and the elastic potential energy of the first elastic element increases. S23: The brake blocks located on both sides of the brake notch return to their original positions along with the piston blocks, releasing the brake disc and thus releasing the brake from the brake disc.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. This invention adds a brake oil chamber, into which hydraulic oil can be injected through the brake oil port. The hydraulic oil acts on the annular boss, so that the force is transmitted to the brake block through the piston block, providing braking force to the brake block. Compared with the original method that only uses the preload of the disc spring as the braking force, the braking force of this brake is not limited by the elastic force of the spring. The braking force can be increased by increasing the pressure of the hydraulic oil, thereby achieving a higher braking force, which can meet the development needs of large-scale and heavy-duty equipment. 2. The present invention still has a first elastic element, and still uses the elastic force of the first elastic element to provide braking force to the brake block, which can ensure braking response speed. Attached Figure Description

[0021] The present invention will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 A three-dimensional schematic diagram of the brake's external structure; Figure 2 This is a front view schematic diagram of the brake device. Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the AA direction; Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure in the middle BB direction; Figure 5 for Figure 2Schematic diagram of the cross-sectional structure in the CC direction; Figure 6 for Figure 2 A schematic diagram of the cross-sectional structure along the D direction; Figure 7 This is a schematic diagram of the limit adjustment mechanism; Markings in the diagram: 1-caliper assembly; 2-cylinder head; 3-fixed brake block; 4-base; 5-limit adjustment mechanism; 6-third elastic element; 7-spring cap; 8-leakage port; 9-brake release port; 10-brake port; 11-second sealing structure; 12-first sealing structure; 13-third sealing structure; 14-fourth sealing structure; 15-piston block; 16-first elastic element; 17-brake leakage buffer groove; 18-brake fluid chamber; 19-brake release chamber; 20- 21-Brake oil leakage buffer groove; 22-Mounting groove; 23-Constraint block; 24-Brake disc; 25-Modible brake block; 26-Stepped hole; 27-Second elastic element; 28-Pull rod; 31-Main caliper body; 32-Connector body; 33-Secondary caliper body; 34-Strip hole; 35-Lower limit element; 36-Lower limit cap; 37-Lower limit screw; 38-Upper limit element; 39-Upper limit screw; 40-Upper limit cap; 41-Locking nut; 42-Brake notch. Detailed Implementation

[0022] In the description of this specification, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this specification and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this specification.

[0023] Furthermore, the use of terms such as "horizontal" or "vertical" in this specification does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this specification, it should also be noted that, unless otherwise expressly specified and limited, the terms “set up,” “install,” “connect,” and “link” should be interpreted broadly. For example, a link can be a fixed link, a detachable link, or an integral link; it can be a mechanical link or an electrical link; it can be a direct link or an indirect link through an intermediate medium; it can be a connection within two components.

[0025] Example 1 like Figures 1-7 As shown, a brake disc brake includes a caliper assembly 1. The caliper assembly 1 has a brake notch 42 for accommodating a brake disc 23. Brake blocks are mounted on both sides of the brake notch 42, meaning there are two brake blocks. When the brake disc 23 is placed in the brake notch 42, the two brake blocks are located on opposite sides of the brake disc 23. At least one brake block is acted upon by at least one piston block 15. Each piston block 15 is slidably connected to a piston hole in the caliper assembly 1. The piston block 15 has an annular boss in its center, and a first sealing distance is formed between the outer wall of the annular boss and the inner wall of the piston hole. The piston block 15, at one end away from the brake notch 42, is provided with a second sealing structure 11 between itself and the inner wall of the piston hole. The piston block 15, at one end near the brake notch 42, is provided with a third sealing structure 13 between itself and the inner wall of the piston hole. The piston hole space between the first sealing structure 12 and the second sealing structure 11 is the brake fluid chamber 18, and the piston hole space between the first sealing structure 12 and the third sealing structure 13 is the brake release fluid chamber 19. The caliper assembly 1 has a brake fluid port 10 communicating with the brake fluid chamber 18, and a brake release fluid port 9 communicating with the brake release fluid chamber 19.

[0026] In this embodiment, the disclosed technical solution includes at least the following two implementation methods.

[0027] In the first implementation, only one of the two brake blocks is acted upon by the piston block 15. The specific working principle is described in Example 6 below.

[0028] In the second embodiment, both brake blocks are acted upon by the piston block 15. In this embodiment, the two brake blocks move closer to each other under the action of the corresponding piston block 15, thereby achieving braking of the brake disc 23.

[0029] Furthermore, in both of the above embodiments, the braking force of the brake disc 23 is provided at least by the pressure of the hydraulic oil entering the brake oil chamber 18 acting on the annular boss. Specifically, the hydraulic oil enters the brake oil chamber 18 through the brake oil port 10 and applies pressure to the annular boss. While the hydraulic oil in the brake release chamber 19 is depressurized from the brake release port 9, the annular boss, carrying the piston block 15, acts on the brake pads, causing the two brake pads to move closer together and ultimately act on the brake disc 23 placed at the brake notch 42, thereby achieving the braking effect on the brake disc 23. When the brake is released from the brake disc 23, hydraulic oil is injected into the brake release chamber 19 through the brake release port 9. The hydraulic oil applies pressure to the annular boss. While the hydraulic oil in the brake oil chamber 18 is depressurized from the brake oil port 10, the annular boss, carrying the piston block 15, resets, and the brake pads reset (moving away from each other), that is, the brake pads no longer act on the brake disc 23, thereby releasing the brake on the brake disc 23, i.e., releasing the brake.

[0030] Therefore, it can be determined that in this embodiment, the addition of a brake oil chamber 18 allows hydraulic oil to be injected into the brake oil chamber 18 through the brake oil port 10. The hydraulic oil acts on the annular boss, so that the force is transmitted to the brake block through the piston block 15, providing braking force to the brake block. Compared with the original method where only the preload of the disc spring is used as the braking force, the braking force of this brake is not limited by the elastic force of the spring. The braking force can be increased by increasing the pressure of the hydraulic oil, thereby achieving a higher braking force, which can meet the development needs of larger and heavier equipment.

[0031] In this embodiment, the brake block subjected to the action of the piston block 15 is subjected to the action of two piston blocks 15. The two piston blocks 15 are located at opposite ends of the brake block, ensuring that the force distribution on the brake block is uniform, effectively preventing the brake block from tilting, and improving the stability of the movement of the brake block and the braking force applied to the brake disc 23.

[0032] In this embodiment, the sealing stability of the brake oil chamber 18 is ensured by the action of the first sealing structure 12 and the second sealing structure 11; the sealing stability of the brake release oil chamber 19 is ensured by the action of the first sealing structure 12 and the third sealing structure 13; the sealing stability of the two oil chambers ensures the stability of the pressure of the hydraulic oil acting on the annular boss, thereby ensuring the stability of the braking force on the brake disc 23; it should be noted that the first sealing structure 12 isolates the brake oil chamber 18 and the brake release oil chamber 19 to prevent the hydraulic oil in the two oil chambers from flowing together.

[0033] Example 2 Based on Example 1, further feasible implementation methods are proposed.

[0034] In one feasible implementation, the end of the piston bore away from the brake notch 42 is closed by the cylinder head 2; a first elastic element 16 is provided between the piston block 15 and the cylinder head 2, and the first elastic element 16 is always in a state of elastic potential energy; specifically, the piston block 15 is provided with a mounting groove 21 for mounting the first elastic element 16, and the first elastic element 16 is installed between the cylinder head 2 and the bottom of the mounting groove 21; that is, when braking, the elastic potential energy of the first elastic element 16 is released, acting on the piston block 15 so that the piston block 15 acts on the brake block, that is, the brake block moves closer to each other; when the braking is released, the pressure generated by the hydraulic oil in the brake release chamber 19 overcomes the elastic potential energy of the first elastic element 16, so that the elastic potential energy of the first elastic element 16 increases, preparing for the next braking operation.

[0035] It should be noted that the first elastic element 16 is preferably a disc spring, which has a large elastic coefficient. That is, even with a small deformation, the disc spring has a large elastic potential energy. In this invention, it is more suitable for the requirements of small brake block displacement and large braking force.

[0036] Furthermore, based on the presence of the first elastic element 16, which is a disc spring, the disc spring has a large elastic coefficient. When the hydraulic oil in the brake release chamber 19 is depressurized, it can have a faster response speed than the hydraulic oil (because the hydraulic oil needs to flow into the brake chamber 18 before it can apply pressure to the annular boss, that is, the response speed of the hydraulic oil is related to the flow rate of the hydraulic oil). Therefore, by retaining the presence of the first elastic element 16, it can be ensured that the brake disc 23 can respond quickly when braking is required.

[0037] Furthermore, the cylinder head 2 is threadedly sealed to the piston hole, meaning the cylinder head 2 is detachable. This allows for the repair and replacement of parts inside the piston hole without disassembling the assembly relationship between the brake and the brake disc 23, such as the aforementioned sealing structures and the first elastic element 16. Of course, if there is no direct connection between the piston block 15 and the brake block, the piston block 15 can also be disassembled for repair and replacement.

[0038] It should be noted that threaded sealing connection is a conventional connection method in this industry. For example, threaded sleeves are used to achieve threaded sealing connection, so it will not be described in detail here.

[0039] Example 3 Based on Examples 1-2, the sealing of the brake fluid chamber 18 and the brake release fluid chamber 19 is further designed.

[0040] In one feasible implementation, the first sealing structure 12 is a sealing ring, which is nested on the annular boss; this design allows the first sealing structure 12 to move with the piston block 15, so that when the piston block 15 is moving, the first sealing structure 12 still isolates the brake oil chamber 18 and the brake release oil chamber 19.

[0041] In one feasible implementation, the second sealing structure 11 is a sealing ring, which is nested on the inner wall of the piston hole; this design allows the relative position of the first sealing structure 12 and the second sealing structure 11 to change when the piston block 15 moves, so as to adapt to the volume change requirements of the brake oil chamber 18.

[0042] In one feasible implementation, the third sealing structure 13 is a sealing ring, which is nested on the inner wall of the piston hole. This design allows for a relative positional change between the first sealing structure 12 and the third sealing structure 13 when the piston block 15 moves, in order to adapt to the volume change requirements of the brake release oil chamber 19.

[0043] In one feasible implementation, considering that the first sealing structure 12, the second sealing structure 11, and the third sealing structure 13 are all sealing rings, under prolonged use of the brake or frequent braking and releasing, the sealing rings are prone to tearing and friction damage, which may lead to a small amount of hydraulic oil leakage. Therefore, a brake oil leakage buffer groove 17 is provided on the inner wall of the piston hole. The second sealing structure 11 is located between the brake oil leakage buffer groove 17 and the first sealing structure 12. The brake oil leakage buffer groove 17 buffers the hydraulic oil leaking from the brake oil chamber 18. Furthermore, the caliper assembly 1 is provided with an oil leakage port 8 that communicates with the brake oil leakage buffer groove 17, through which the hydraulic oil stored in the brake oil leakage buffer groove 17 is led out.

[0044] Of course, a brake release oil leakage buffer groove 20 is provided on the inner wall of the piston hole. The third sealing structure 13 is located between the brake release oil leakage buffer groove 20 and the first sealing structure 12. A fourth sealing structure 14 is also provided between the piston block 15 and the piston hole. The brake release oil leakage buffer groove 20 is located between the third sealing structure 13 and the fourth sealing structure 14. The brake release oil leakage buffer groove 20 buffers the hydraulic oil leaking from the brake release oil chamber 19. The caliper assembly 1 is provided with an oil leakage port 8 that communicates with the brake release oil leakage buffer groove 20. The hydraulic oil stored in the brake release oil leakage buffer groove 20 is led out through the oil leakage port 8. It should be noted that the purpose of providing the fourth sealing structure 14 is to prevent the hydraulic oil stored in the brake leakage buffer groove 17 from leaking and falling onto the brake block, affecting the braking effect.

[0045] Example 4 Based on Examples 1-3, further design was made for the brake block reset.

[0046] In the first embodiment, the brake block is directly connected to the piston block 15. When the piston block 15 is reset, the brake block moves accordingly to achieve reset, thereby releasing the brake.

[0047] In the second embodiment, the brake block acted upon by the piston block 15 is a movable brake block 24. If the movable brake block 24 is not connected to the piston block 15, a stepped hole 25 is provided on the caliper assembly 1. The stepped hole 25 has a step, and a pull rod 27 is installed in the stepped hole 25. One end of the pull rod 27 is detachably connected to the movable brake block 24, and the other end of the pull rod 27 has an end cap. A second elastic element 26 is provided between the end cap and the step. The second elastic element 26 is installed in a second posture. This second posture satisfies the condition that when the movable brake block 24 moves closer to other brake blocks, the elastic potential energy of the second elastic element 26 increases; that is, during braking, the brake blocks move closer to each other, and the elastic potential energy of the second elastic element 26 increases; when the braking is released, the brake block is no longer acted upon by the piston block 15, that is, the elastic potential energy of the second elastic element 26 is released, and the brake block moves to a reset position.

[0048] In the second implementation, there can be multiple stepped holes 25 and second elastic members 26, distributed at the two ends of the brake block to ensure that the force of the brake block on the second elastic member 26 is evenly distributed, avoiding tilting and ensuring reset accuracy and stability (no jamming due to tilting).

[0049] Furthermore, in this embodiment, the pull rod 27 is preferably a screw rod with a nut, one end of which is threadedly connected to the brake block to facilitate the disassembly and replacement of the brake block; the nut is located at the other end of the screw rod and serves as a connecting constraint component for the second spring member.

[0050] Therefore, comparing the first and second implementation methods in this embodiment, although the first implementation method has a simple structure, it cannot disassemble the piston block 15 and the brake block, that is, it cannot repair and replace the piston block 15 and the brake block. Since the brake block is a consumable part, the second implementation method is preferred.

[0051] Example 5 Based on Examples 1-4, the constraint of the brake block is further designed.

[0052] As described in Example 1, at least one brake block is acted upon by the piston block 15, causing relative movement with the caliper assembly 1; there may also be brake blocks that are not acted upon by the piston block 15 and remain stationary relative to the caliper assembly 1. Therefore, the brake block acted upon by the piston block 15 is the movable brake block 24, and the brake block not acted upon by the piston block 15 is the fixed brake block 3, wherein: The fixed brake block 3 is fixed to the inner wall of the brake notch 42, and is actually fixed to the caliper assembly 1. A constraint block 22 is provided at the assembly position of the movable brake block 24. The constraint block 22 is fixedly connected to the inner wall of the brake notch 42, and has a constraint hole that matches the shape and size of the movable brake block 24. The axis of the constraint hole is parallel to the axis of the piston hole. The movable brake block 24 is slidably connected to the constraint hole, and the sliding direction is along the axis of the constraint hole. The side wall of the movable brake block 24 is always in contact with the wall of the constraint hole, meaning that regardless of the action of the piston block 15, the movable brake block 24 is constrained by the constraint hole. The constraint block 22 can be fixedly connected to the caliper assembly 1 by bolts.

[0053] Preferably, the inner wall of the brake notch 42 is provided with a mounting groove 21 for the fixed brake block 3, and the lower end surface of the fixed brake block 3 is provided with an insert block that matches the mounting groove 21. The insert block is embedded in the mounting groove 21 to constrain the brake block, so as to ensure that the brake block will not move due to the friction of the brake disc 23 when braking the brake disc 23, and can withstand the torque brought by the brake disc 23 to ensure the braking effect.

[0054] For the movable brake block 24, the constraint of the constraint block 22 also achieves the following purpose: to constrain the brake block so as to ensure that when the brake block brakes the brake disc 23, the brake block will not move due to the friction of the brake disc 23, and can withstand the torque brought by the brake disc 23 to ensure the braking effect.

[0055] Example 6 The technical features further disclosed in Embodiments 2-5 above, specifically the design of the movable brake block 24 acted upon by the piston block 15, are applicable to both implementation methods in Embodiment 1 (first implementation method, where only one of the two brake blocks is acted upon by the piston block 15; second implementation method, where both brake blocks are acted upon by the piston block 15). For the case where both brake blocks are acted upon by the piston block 15, the features disclosed in the above embodiments are sufficient to achieve the complete braking and release process of the brake disc 23. Adjusting the initial position of the piston block 15 to adjust the initial position of the brake block (the adjustment method can be to adjust the pressure of the hydraulic oil sealed in the release brake oil chamber 19 after the brake is released) controls the air gap between the brake block and the brake disc 23 (gap a and gap b hereinafter). However, for the first implementation method where only one brake block is acted upon by the piston block 15, further design is required based on Embodiments 1-5.

[0056] In one feasible implementation, the brake block includes a movable brake block 24 and a fixed brake block 3; the brake also includes a base 4, on which a floating column 28 is fixed, and the clamp assembly 1 is slidably connected to the floating column 28, with the sliding stroke direction of the clamp assembly 1 parallel to the direction in which the movable brake block 24 and the fixed brake block 3 approach each other; based on the fact that the brake disc 23 will not be displaced in the direction in which the brake blocks approach or move away from each other, the working principle of the brake and brake release of the brake is as follows.

[0057] When braking, when the movable brake block 24 contacts the surface of the brake disc 23 after being acted upon by the piston block 15, the brake disc 23 restricts the displacement of the movable brake block 24; as hydraulic oil continues to be filled into the brake oil chamber 18, the piston block 15 protrudes larger and larger from the piston hole, and the distance between the movable brake block 24 and the inner wall of the brake notch 42 becomes larger and larger, that is, the caliper assembly 1 moves along the floating column 28, taking the fixed brake block 3 to move closer to the brake disc 23 (in fact, it can also be understood that the hydraulic oil in the brake oil chamber 18 reacts to the piston hole and the component belonging to the caliper assembly 1, or reacts to the cylinder head 2, pushing the caliper assembly 1 to move along the floating column 28), thereby realizing the braking of the brake disc 23; When the brake is released, hydraulic oil is filled into the brake release chamber 19, and at the same time, the hydraulic oil in the brake chamber 18 is discharged. Overcoming the elastic potential energy of the first elastic element 16, the caliper assembly 1 first performs a reset action, and then the piston block 15 performs a reset action. The brake block follows the piston block 15 to perform a reset action, thereby releasing the brake from the brake disc 23.

[0058] Therefore, it can be seen that only one brake pad is acted upon by piston block 15 to effectively achieve braking and brake release. Compared with the case where both brake pads are acted upon by piston block 15, its structure is simpler. Because there are no more piston blocks 15, the overall size of the entire brake is small, which can adapt to more installation environments, especially compact installation environments.

[0059] Furthermore, as described above, when the brake is released, the caliper assembly 1 will perform a reset action. Thus, one end of the floating column 28 is connected to the base 4, and the other end of the floating column 28 is provided with a spring cap 7. A third elastic element 6 is provided between the spring cap 7 and the caliper assembly 1. This third elastic element 6 is installed in a third posture. This second posture satisfies the requirement that when the movable brake block 24 and the fixed brake block 3 move closer to each other, the elastic potential energy of the third elastic element 6 increases. This design avoids the need for vertical installation (installation along the direction of gravity), that is, it avoids the caliper assembly 1 relying solely on its own gravity for reset. This setting allows the caliper assembly 1 to reset using the elastic potential energy of the third elastic element 6, resulting in greater stability and accuracy in reset, and also enabling the brake to adapt to non-vertical installation environments.

[0060] Furthermore, when both brake blocks are acted upon by the piston block 15, adjusting the initial position of the piston block 15 adjusts the initial position of the brake blocks, thereby controlling the air gap between the brake blocks and the brake disc 23. However, when there is a movable brake block 24 and a fixed brake block 3, further design is needed for air gap adjustment. Specifically, a limit adjustment mechanism 5 is provided between the caliper assembly 1 and the base 4, which limits the sliding stroke of the caliper assembly 1 to c. When the brake disc 23 is placed in the brake notch 42 and is in an unbraked state, the gap between the fixed brake block 3 and the brake disc 23 is b, and the maximum gap between the movable brake block 24 and the brake disc 23 is a. Then, b ≤ c < a + b. Preferably, b = c. If b > c, the brake blocks are worn.

[0061] Furthermore, the limit adjustment mechanism 5 includes an upper limit component 38 and multiple lower limit components 35. The upper limit component 38 includes an upper limit screw 39 and an upper limit cap 40. One end of the upper limit screw 39 is connected to the base 4, and the upper limit cap 40 is fixed to the other end of the upper limit screw 39. The lower limit component 35 includes a lower limit screw 37 and a lower limit cap 36. One end of the lower limit screw 37 is connected to the base 4, and the lower limit cap 36 is fixed to the other end of the upper limit screw 39. The upper limit screw 39 is threaded to the base 4, and the lower limit screw 37 is threaded to the base 4. The axis is parallel to the direction in which the movable brake block 24 and the fixed brake block 3 approach each other; the clamp body assembly 1 is slidably connected to the upper limit screw 39, and the sliding stroke of the clamp body assembly 1 is located between the upper limit cap 40 and the lower limit cap 36; that is, a strip hole 34 can be opened on the clamp body assembly 1, the upper limit screw 39 passes through the strip hole 34 in a direction perpendicular to the axis of the strip hole 34, the upper limit cap 40 is located in the strip hole 34, thereby limiting the upper limit position of the clamp body assembly 1; the lower limit cap 36 is supported on the outer surface of the clamp body assembly 1, thereby limiting the lower limit position of the clamp body assembly 1.

[0062] Furthermore, by adjusting the threaded connection between the upper limit screw 39 and the base 4, the upper limit position of the clamp assembly 1 can be adjusted; by adjusting the threaded connection between the lower limit screw 37 and the base 4, the lower limit position of the clamp assembly 1 can be adjusted. In this way, the dimension c can be adjusted in a comprehensive manner to satisfy the constraint condition b≤c<a+b.

[0063] It should be noted that multiple lower limit components 35 can provide multiple support positions to ensure the stability of the caliper assembly 1 and prevent the caliper assembly 1 from tilting, which would affect the parallelism between the brake block and the brake disc 23.

[0064] It should be noted that the upper limit component 38 and the lower limit component 35 can be locked by the locking nut 41 in conjunction with the threaded connection between the upper limit component 38 and the base 4 and the threaded connection between the lower limit component 35 and the base 4, so as to stabilize the threaded connection between the upper limit component 38 and the base 4 and the threaded connection between the lower limit component 35 and the base 4, and ensure the stable positional restriction accuracy of the clamp assembly 1.

[0065] Example 7 Based on Examples 1-6, the clamp assembly 1 is further designed.

[0066] The caliper assembly 1 includes a main caliper body 31, a connecting body 32, and a secondary caliper body 33 connected by a clamp. The connecting body 32 is located between the main caliper body 31 and the secondary caliper body 33. The distance between the main caliper body 31 and the secondary caliper body 33 is the brake notch 42, and the thickness of the connecting body 32 is the notch width of the brake notch 42. This design makes the caliper assembly 1 easier to manufacture, especially the machining of the brake notch 42. Compared with the integral caliper assembly 1, no cutting machining is required. At the same time, the main caliper body 31, the connecting body 32, and the secondary caliper body 33 are connected by bolts, which facilitates the disassembly and installation of the entire brake.

[0067] Example 8 A braking system for a brake disc includes a brake brake for a brake disc 23 as described in any of the embodiments 1-7, and a hydraulic oil supply system; the hydraulic oil supply system includes a hydraulic oil station and valves, and the hydraulic oil station is connected to all brake oil ports 10 and brake release oil ports 9 through the valves respectively.

[0068] Yes, it is feasible. The valve is a directional valve. The hydraulic oil station in the hydraulic supply system, the valve and the brake are connected by pipelines. The specific pipeline layout and connection method are conventional technologies in this industry and will not be described in detail here.

[0069] Example 9 A brake disc braking / releasing method, using the brake disc braking system described in Example 8, includes a brake disc 23 braking step for braking the brake disc 23 and a brake disc 23 releasing step for releasing the brake disc 23, wherein: S1: Brake disc 23 brake includes steps S11-S13; S11: Adjusting valve, the hydraulic oil supply system supplies hydraulic oil to the brake oil chamber 18 through the brake oil port 10, and at the same time, the hydraulic oil in the brake release chamber 19 flows back to the hydraulic oil station through the brake release port 9. S12: Under the action of hydraulic oil in brake oil chamber 18 and elastic potential energy of first elastic element 16, piston block 15 pushes brake blocks to move closer to each other. S13: The brake blocks located on both sides of the brake notch 42 clamp the brake disc 23, thereby braking the brake disc 23; S2: Brake disc 23 release includes steps S21-S23; S21: Adjusting valve, the hydraulic oil supply system supplies hydraulic oil to the brake release chamber 19 through the brake release port 9, while the hydraulic oil in the brake chamber 18 flows back to the hydraulic oil station through the brake port 10. S22: The piston block 15 is reset under the action of the hydraulic oil in the brake release chamber 19, and at the same time overcomes the elastic potential energy of the first elastic element 16, and the elastic potential energy of the first elastic element 16 increases. S23: The brake blocks on both sides of the brake notch 42 are reset along with the piston block 15, releasing the brake disc 23 and thus releasing the brake disc 23.

[0070] This invention is not limited to the specific embodiments described above. The invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A brake disc brake, characterized in that: The caliper assembly (1) includes a brake notch (42) for accommodating a brake disc (23). Brake blocks are mounted on both sides of the brake notch (42), and at least one brake block is acted upon by at least one piston block (15). Each piston block (15) is slidably connected to a piston hole in the caliper assembly (1). The piston block (15) has an annular boss at its center, and a first sealing structure (12) is provided between the outer wall of the annular boss and the inner wall of the piston hole. A sealing strip is provided between the end of the piston block (15) away from the brake notch (42) and the inner wall of the piston hole. The second sealing structure (11) has a third sealing structure (13) between the end of the piston block (15) near the brake notch (42) and the inner wall of the piston hole; the piston hole space between the first sealing structure (12) and the second sealing structure (11) is the brake oil chamber (18), and the piston hole space between the first sealing structure (12) and the third sealing structure (13) is the brake release oil chamber (19); the caliper assembly (1) has a brake oil port (10) communicating with the brake oil chamber (18), and the caliper assembly (1) has a brake release oil port (9) communicating with the brake release oil chamber (19); The brake also includes a base (4), on which a floating column (28) is fixed. The clamp assembly (1) is slidably connected to the floating column (28), and the sliding stroke direction of the clamp assembly (1) is parallel to the direction in which the movable brake block (24) and the fixed brake block (3) approach each other. A limit adjustment mechanism (5) is provided between the clamp assembly (1) and the base (4). The limit adjustment mechanism (5) limits the sliding stroke of the clamp assembly (1) to c. When the brake disc (23) is placed in the brake notch (42) and the brake disc (23) is in an unbraked state, the gap between the fixed brake block (3) and the brake disc (23) is b, and the maximum gap between the movable brake block (24) and the brake disc (23) is a. Then b≤c<a+b.

2. The brake as claimed in claim 1, wherein: The end of the piston hole away from the brake notch (42) is closed by the cylinder head (2); a first elastic element (16) is provided between the piston block (15) and the cylinder head (2), and the first elastic element (16) is always in a state of elastic potential energy.

3. The brake as claimed in claim 2, wherein: The cylinder head (2) is threadedly sealed to the piston hole.

4. The brake device according to claim 1, characterized in that: The first sealing structure (12) is a sealing ring, which is nested on the annular boss; And / or, the second sealing structure (11) is a sealing ring that is nested on the inner wall of the piston bore; And / or, the third sealing structure (13) is a sealing ring that is nested on the inner wall of the piston bore.

5. The brake device according to claim 1, characterized in that: A brake oil leakage buffer groove (17) is provided on the inner wall of the piston hole, and the second sealing structure (11) is located between the brake oil leakage buffer groove (17) and the first sealing structure (12); And / or, a brake release oil leakage buffer groove (20) is provided on the inner wall of the piston hole, the third sealing structure (13) is located between the brake release oil leakage buffer groove (20) and the first sealing structure (12), and a fourth sealing structure (14) is also provided between the piston block (15) and the piston hole, the brake release oil leakage buffer groove (20) is located between the third sealing structure (13) and the fourth sealing structure (14); The clamp assembly (1) is provided with an oil leak port (8) which is connected to the brake oil leak buffer groove (17) and the brake release oil leak buffer groove (20) respectively.

6. The brake device according to claim 1, characterized in that: The brake block acted upon by the piston block (15) is a movable brake block (24). If the movable brake block (24) is not connected to the piston block (15), a stepped hole (25) is provided on the caliper assembly (1). The stepped hole (25) has a step, and a pull rod (27) is installed in the stepped hole (25). One end of the pull rod (27) is detachably connected to the movable brake block (24), and the other end of the pull rod (27) has an end cap. A second elastic element (26) is provided between the end cap and the step. The second elastic element (26) is installed in a second posture. The second posture satisfies the condition that when the movable brake block (24) moves closer to other brake blocks, the elastic potential energy of the second elastic element (26) increases.

7. The brake device according to claim 1, characterized in that: The fixed brake block (3) is fixed to the inner wall of the brake notch (42); A constraint block (22) is provided at the assembly position of the movable brake block (24). The constraint block (22) is fixedly connected to the inner wall of the brake notch (42), and the constraint block (22) has a constraint hole that matches the shape and size of the movable brake block (24). The axis of the constraint hole is parallel to the axis of the piston hole. The movable brake block (24) is slidably connected to the constraint hole, and the sliding direction is along the axis of the constraint hole; the side wall of the movable brake block (24) is always in contact with the hole wall of the constraint hole.

8. The brake device according to claim 1, characterized in that: One end of the floating column (28) is connected to the base (4), and the other end of the floating column (28) is provided with a spring cover (7). A third elastic element (6) is provided between the spring cover (7) and the clamp assembly (1). The third elastic element (6) is installed in a third posture. The third posture satisfies the condition that when the movable brake block (24) and the fixed brake block (3) move closer to each other, the elastic potential energy of the third elastic element (6) increases.

9. The brake device according to claim 1, characterized in that: The limit adjustment mechanism (5) includes an upper limit component (38) and multiple lower limit components (35). The upper limit component (38) includes an upper limit screw (39) and an upper limit cap (40). One end of the upper limit screw (39) is connected to the base (4), and the upper limit cap (40) is fixed to the other end of the upper limit screw (39). The lower limit component (35) includes a lower limit screw (37) and a lower limit cap (36). One end of the lower limit screw (37) is connected to the base (4), and the lower limit component (35) is fixed to the other end of the upper limit screw (39). The limit cap (36) is fixed to the other end of the upper limit screw (39); the threaded axis of the upper limit screw (39) and the base (4) and the threaded axis of the lower limit screw (37) and the base (4) are parallel to the direction in which the movable brake block (24) and the fixed brake block (3) approach each other; the clamp assembly (1) is slidably connected to the upper limit screw (39), and the sliding stroke of the clamp assembly (1) is located between the upper limit cap (40) and the lower limit cap (36).

10. The brake device according to claim 1, characterized in that: The clamp assembly (1) includes a main clamp body (31), a connecting body (32) and a secondary clamp body (33) connected by a handle. The connecting body (32) is located between the main clamp body (31) and the secondary clamp body (33). The distance between the main clamp body (31) and the secondary clamp body (33) is the braking notch (42). The thickness of the connecting body (32) is the notch width of the braking notch (42).

11. A braking system for a brake disc, characterized in that: The brake includes a brake disc as described in any one of claims 1-10, and a hydraulic oil supply system; the hydraulic oil supply system includes a hydraulic oil station and valves, and the hydraulic oil station is connected to all brake oil ports (10) and brake release oil ports (9) respectively through the valves.

12. A brake disc braking / releasing method, employing the braking system of the brake disc as described in claim 11, characterized in that: This includes a brake disc (23) braking step for braking the brake disc (23) and a brake disc (23) release step for releasing the brake disc (23), wherein: S1: Brake disc (23) Braking includes steps S11-S13; S11: Adjusting valve, the hydraulic oil supply system supplies hydraulic oil to the brake oil chamber (18) through the brake oil port (10), and at the same time, the hydraulic oil in the release brake oil chamber (19) flows back to the hydraulic oil station through the release brake oil port (9); S12: Under the action of hydraulic oil in the brake oil chamber (18) and the elastic potential energy of the first elastic element (16), the piston block (15) pushes the brake blocks to move closer to each other. S13: The brake blocks located on both sides of the brake notch (42) clamp the brake disc (23) to brake the brake disc (23); S2: Brake disc (23) release includes steps S21-S23; S21: Adjusting valve, the hydraulic oil supply system supplies hydraulic oil to the brake release chamber (19) through the brake release port (9), while the hydraulic oil in the brake chamber (18) flows back to the hydraulic oil station through the brake port (10). S22: The piston block (15) is reset under the action of hydraulic oil in the brake release oil chamber (19), and at the same time overcomes the elastic potential energy of the first elastic element (16), and the elastic potential energy of the first elastic element (16) increases. S23: The brake blocks on both sides of the brake notch (42) are reset along with the piston block (15), releasing the brake disc (23) and thus releasing the brake disc (23).

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