A disc brake structure

Abstract

The present invention discloses a disc brake structure, comprising a brake housing, a brake assembly and a cooling assembly; the brake assembly comprises a brake disc, a slider assembly and a drive assembly; the cooling assembly comprises a cooling pipeline, a cooling box and a pump; a cooling ring groove is provided on the outer periphery of the slider assembly; the cooling pipeline and the cooling ring groove are connected to form a closed loop; the present invention cools the slider assembly through a closed loop, thereby avoiding the occurrence of thermal decay and improving the braking stability of the brake structure; and in the present invention, a closed loop for cooling can only be formed when the slider assembly and the brake disc are in contact with each other for braking, that is, the cooling assembly is in a working state only when braking and the braking state is maintained, which can achieve the effect of follow-up cooling and avoid the problems of energy consumption and reduced component life.

Description

Technical Field

[0001] The present invention relates to the technical field of braking, and in particular to a disc brake structure. Background Art

[0002] Existing brake technologies can be roughly divided into two types: drum brakes and disc brakes.

[0003] Drum brakes, also known as block brakes, achieve braking by pressing the brake pads against the brake wheels. They have stable and reliable braking performance, low cost, and can meet large braking force requirements. During braking, the brake shoes are forced to open and squeeze with the inner surface of the brake drum to generate friction, thereby braking the vehicle. Their disadvantages are: 1. The braking effect is relatively poor, the braking force of the drum brake is poorly stable, and the braking force varies greatly on different road surfaces, making it difficult to control; 2. The heat dissipation performance is poor, and a large amount of heat is accumulated during braking. The brake drum is prone to deformation under the influence of high temperature, resulting in a large thermal decay effect and vibration, which leads to a decrease in braking efficiency.

[0004] Disc brakes, also known as disc brakes, are mainly composed of brake discs, brake calipers, slave cylinders, oil pipes, etc. The main working principle of disc brakes is to press the brake discs with brake pads to achieve braking of the brake discs. Its disadvantages are: 1. Huge heat is generated during braking, and long-term use can easily cause brake failure; 2. The braking force is small, and the size of the braking force cannot be controlled.

[0005] In summary, there is an urgent need for a disc brake structure to solve the problems of thermal decay, unstable braking performance and uncontrollable braking force in the prior art. Summary of the Invention

[0006] The present invention aims to provide a disc brake structure to solve the problems of thermal decay, unstable braking performance, and uncontrollable braking force in the prior art. The specific technical solution is as follows:

[0007] A disc brake structure includes a brake housing, a brake assembly, and a cooling assembly; the brake assembly is disposed within the brake housing; the brake assembly includes a brake disc, a slider assembly, and a drive assembly; the brake disc is fixed to a structure to be braked; the slider assembly is slidably disposed within the brake housing, and the slider assembly contacts the brake disc to achieve braking of the brake disc; the drive assembly is disposed between the brake housing and the slider assembly, and is used to drive the slider assembly to slide;

[0008] The cooling assembly includes a cooling pipeline, a cooling box and a pump; a cooling ring groove is provided on the outer periphery of the slider assembly; both ends of the cooling pipeline are used to connect to the cooling ring groove, and the cooling pipeline and the cooling ring groove are connected to form a closed loop; a first cooling medium is provided inside the closed loop; the cooling box is in contact with the cooling pipeline, and a second cooling medium for cooling the cooling pipeline is provided inside the cooling box; the pump is connected to the cooling pipeline and is used to drive the first cooling medium to circulate in the closed loop.

[0009] The above technical solution is preferred, wherein the slider assembly includes a slider and a first friction block arranged on the slider; the slider is slidably arranged in the brake housing; the first friction block is used to contact the brake disc; and a cooling ring groove is provided on the outer periphery of the slider.

[0010] The above technical solution is preferred, wherein the slider assembly further includes a second friction block fixedly arranged in the brake housing, the first friction block and the second friction block are respectively arranged on both axial sides of the brake disc, and there is an axial gap A between the first friction block and the second friction block and the brake disc.

[0011] The above technical solution is preferred, wherein the driving assembly includes a piston, a first telescopic member and a second telescopic member; the piston is slidably arranged in the brake housing; the two ends of the first telescopic member are respectively connected to the inner wall of the brake housing and the piston, and the first telescopic member pushes the piston, the slider and the first friction block toward the brake disc; the two ends of the second telescopic member are respectively connected to the inner wall of the brake housing and the slider, and the second telescopic member pushes the slider and the first friction block away from the brake disc.

[0012] Preferably, the above technical solution is provided with a guide groove on the piston; the slide block is provided with a guide post; the guide post is arranged in the guide groove, and the axial direction of the guide post is consistent with the sliding direction of the slide block.

[0013] The above technical solution is preferred, wherein the piston is threadedly connected with an adjusting bolt; the adjusting bolt is located between the guide column and the guide groove, and the screwing direction of the adjusting bolt is consistent with the sliding direction of the slider.

[0014] Preferably, in the above technical solution, a first sealing ring is provided between the piston and the inner wall of the brake housing.

[0015] Preferably, the above technical solution is such that the first telescopic member and the second telescopic member are both memory springs.

[0016] The above technical solution is preferred, wherein the cooling pipeline includes cooling hole one, cooling hole two, cooling hole three, external section one and external section two; cooling hole one and cooling hole two are both opened on the brake housing, and one end of cooling hole one and cooling hole two are both connected to the cooling ring groove; the cooling hole three is through-set on the brake housing; the other end of cooling hole one is connected to cooling hole three through external section one; the other end of cooling hole two is connected to cooling hole three through external section two; and the cooling box is sleeved on external section two.

[0017] Preferably, the above technical solution is provided with two sets of second sealing rings between the slider and the inner wall of the brake housing; in the sliding direction of the slider, the cooling ring groove, the first cooling hole and the second cooling hole are all located between the two sets of second sealing rings.

[0018] The application of the technical solution of the present invention has the following beneficial effects:

[0019] (1) The disc brake structure of the present invention includes a brake housing, a brake assembly and a cooling assembly; the brake assembly includes a brake disc, a slider assembly and a drive assembly; the cooling assembly includes a cooling pipe, a cooling box and a pump; a cooling ring groove is provided on the outer periphery of the slider assembly; the cooling pipe and the cooling ring groove are connected to form a closed loop; the present invention cools the slider assembly through a closed loop (i.e., cools the main heat-generating part on the right side of the device), thereby avoiding the occurrence of thermal decay and improving the braking stability of the brake structure; and in the present invention, a closed loop for cooling can only be formed when the slider assembly (specifically, the first friction block) contacts the brake disc for braking, that is, the cooling assembly is in working state only when braking and the braking state is maintained, and can play a follow-up (i.e., braking) cooling effect, thereby avoiding the problems of energy consumption and reduced component life.

[0020] (2) When braking, the brake structure of the present invention drives the first friction block to be pressed against the end face of the brake disc through the slider to achieve braking of the brake disc, and the structure is simple; the cooling ring groove on the slider facilitates the circulation of the first cooling medium inside the brake structure to achieve the purpose of cooling and lowering the temperature. When the braking state is released, the slider plays the role of closing the cooling pipeline, that is, at this time the first cooling medium cannot circulate, thereby preventing the first cooling medium from being lost or leaked.

[0021] (3) The first friction block and the second friction block of the present invention can realize friction braking on the brake disc from both the left and right sides, thereby ensuring the braking effect.

[0022] (4) The present invention provides braking force through the first telescopic member and provides a driving force for releasing the brake state through the second telescopic member, that is, braking and releasing the brake are respectively achieved through two groups of telescopic members (i.e., the first telescopic member and the second telescopic member). Compared with a single driving structure (i.e., braking and releasing the brake are the same driving structure), the two groups of telescopic members of the present invention drive the braking and releasing the brake separately, thereby improving the reliability of the braking structure.

[0023] (5) The piston and the slider of the present invention are guided by the guide groove and the guide column to avoid brake failure caused by structural motion mismatch.

[0024] (6) The adjusting bolt of the present invention can pre-adjust the fitting distance between the piston and the slider, that is, can adjust the axial gap A between the first friction block and the brake disc to adjust the magnitude of the braking force.

[0025] (7) The first sealing ring of the present invention is used to ensure that the two groups of telescopic parts are in independent working spaces, avoid mutual interference, and improve the stability of the structure.

[0026] (8) Both sets of telescopic parts of the present invention adopt memory springs, which can control their telescopic length according to the size of a given current (i.e., set current), that is, the size of the braking force can be controlled.

[0027] (9) The cooling circuit of the present invention includes cooling holes (including cooling holes one to three), an external section one and an external section two; the cooling holes of the present invention are provided on the brake housing, and the first cooling medium flowing in the cooling holes can cool the brake housing to improve the cooling effect on the brake structure, and both cooling hole one and cooling hole two are structures provided on the brake housing, that is, the positions of cooling hole one and cooling hole two on the brake housing remain unchanged, so that their matching form with the cooling ring groove (that is, connection) is more reliable.

[0028] (10) The function of the two sets of second sealing rings of the present invention is to prevent the first cooling medium in the cooling ring groove, cooling hole 1 and cooling hole 2 from being lost or leaked, so as to ensure the normal operation of the brake structure.

[0029] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0031] In the attached figure:

[0032] Figure 1is a cross-sectional schematic diagram of the disc brake structure of this embodiment;

[0033] Among them, 1. brake housing; 1.1. left brake housing; 1.2. right brake housing; 1.21. mounting seat; 2. brake disc; 3. slider; 3.1. cooling ring groove; 3.2. guide column; 4. first friction block; 5. second friction block; 6. piston; 6.1. guide groove; 7. first telescopic member; 8. second telescopic member; 9. cooling pipeline; 9.a. cooling hole one; 9.b. cooling hole two; 9.c. cooling hole three; 9.d. external section one; 9.e. external section two; 10. cooling box; 11. adjusting bolt; 12. first sealing ring; 13. second sealing ring. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0035] Example:

[0036] A disc brake structure includes a brake housing 1, a brake assembly and a cooling assembly, such as Figure 1 As shown, the details are as follows:

[0037] The brake housing 1 serves as the base of the brake structure and can be an integrated structure or a split structure. Considering the assembly and processing issues, the brake housing 1 of this embodiment adopts a split structure, as follows:

[0038] The brake housing 1 includes a left brake housing 1.1 and a right brake housing 1.2. The left brake housing 1.1 and the right brake housing 1.2 are fixedly assembled to form an integral structure. A mounting seat 1.21 is provided at the lower end of the right brake housing 1.2. The mounting seat 1.21 is provided with an assembly hole, and the brake housing 1 is fixed to the external structure through the assembly hole.

[0039] The brake assembly is arranged inside the brake housing 1. The brake assembly is an execution structure for achieving braking and releasing the brake. Its specific structure is as follows: the brake assembly includes a brake disc 2, a slider assembly and a drive assembly;

[0040] The brake disc 2 is vertically fixed on the structure to be braked. The brake disc 2 can move with the structure to be braked. By braking the brake disc 2, the structure to be braked is braked.

[0041] The overall braking concept of the slider assembly is as follows:

[0042] The slider assembly serves as a sliding component and a braking contact component, and is slidably arranged in the brake housing 1. Driven by the driving assembly, the slider assembly can slide in the axial direction of the brake disc 2, and then move away from and close to the brake disc 2. When the slider assembly (specifically the first friction block 4) abuts against the end face of the brake disc 2, the brake disc 2 can be braked. Conversely, when the slider assembly is out of contact with the end face of the brake disc 2, the braking state of the brake disc 2 is released.

[0043] The specific structure of the slider component is as follows:

[0044] The slider assembly includes a slider 3 and a first friction block 4; the slider 3 (cylindrical) is slidably arranged in the brake housing 1, and the outer periphery of the slider 3 is in sliding contact with the inner wall of the brake housing 1. The slider 3 can slide in the axial direction of the brake disc 2. The first friction block 4 is fixed to the right end of the slider 3. When the slider 3 drives the first friction block 4 to contact the end face of the brake disc 2, the brake disc 2 can be braked. When the first friction block 4 is out of contact with the end face of the brake disc 2, the braking state of the brake disc 2 is released. In this embodiment, preferably, the slider assembly also includes a second friction block 5. The first friction block 4 and the second friction block 5 are respectively arranged on both axial sides of the brake disc 2. There is an axial gap A between the first friction block 4 and the second friction block 5 and the end face of the brake disc 2. The axial gap A is 2-5mm. Since the first friction block 4 and the second friction block 5 are clearance-matched with the end face of the brake disc 2, when the first friction block 4 acts on the brake disc 2, the brake disc 2 deviates to the right to abut against the second friction block 5, so that the second friction block 5 can cooperate with the first friction block 4, and friction brake the brake disc 2 from the left and right sides, with a good braking effect.

[0045] The function of the drive assembly is to provide braking force and thrust in the contact braking state. The specific structure is as follows:

[0046] The driving assembly includes a piston 6, a first telescopic member 7 and a second telescopic member 8;

[0047] The piston 6 is slidably disposed in the brake housing 1 and can slide in the axial direction of the brake disc 2. The piston 6 is located at the left end of the slider 3.

[0048] The left end of the first telescopic member 7 is connected to (or in contact with) the inner wall of the brake housing 1, and the right end of the first telescopic member 7 is connected to (or in contact with) the piston 6. The telescopic direction of the first telescopic member 7 is consistent with the movement direction of the slider 3, that is, both are axial to the brake disc 2. In this embodiment, the braking force is provided by the first telescopic member 7. The specific action process is: the first telescopic member 7 is extended, the first telescopic member 7 pushes the piston 6 to slide, and the piston 6 pushes the slider 3 and the first friction block 4 to move to the right until the first friction block 4 is in contact with the end face of the brake disc 2, thereby achieving friction braking;

[0049] The left end of the second telescopic member 8 is connected to (or in conflict with) the slider 3, and the right end of the second telescopic member 8 is connected to (or in conflict with) the inner wall of the brake housing 1. The telescopic direction of the second telescopic member 8 is consistent with the sliding direction of the slider 3. In this embodiment, the second telescopic member 8 provides a thrust to release the braking state. The specific action process is: the second telescopic member 8 extends, and the second telescopic member 8 pushes the slider 3 and the piston 6 to move to the left until the first friction block 4 is out of contact with the end face of the brake disc 2. At this time, the braking state is released.

[0050] The preferred structure of the drive assembly is as follows:

[0051] 1. In this embodiment, the first telescopic member 7 and the second telescopic member 8 can both be in the form of a telescopic oil cylinder or a telescopic air cylinder. However, in this embodiment, it is preferred that the first telescopic member 7 and the second telescopic member 8 are both memory springs. The use of memory springs can control the extension length and extension speed thereof by a given current, that is, can control the braking force or the thrust for releasing the brake.

[0052] 2. In order to ensure the relative position between the piston 6 and the slider 3, that is, to ensure the stability of the structure, a cylindrical guide groove 6.1 is provided at the right end of the piston 6, and a cylindrical guide post 3.2 is provided at the left end of the slider 3. The guide post 3.2 is coaxially arranged in the guide groove 6.1, and the axial direction of the guide post 3.2 is consistent with the sliding direction of the slider 3.

[0053] 3. The left end of the piston 6 is threadedly connected to an adjusting bolt 11. The right end of the adjusting bolt 11 extends into the guide groove 6.1, and the end of the adjusting bolt 11 abuts against the end face of the guide column 3.2. The threaded direction of the adjusting bolt 11 is consistent with the axial direction of the guide column 3.2. The function of the adjusting bolt 11 is to pre-push the slider 3 and the first friction block 4 toward the brake disc 2, that is, to pre-adjust the axial clearance A between the first friction block 4 and the end face of the brake disc 2.

[0054] 4. A first sealing ring 12 is provided between the piston 6 and the inner wall of the brake housing 1 . The first sealing ring 12 can separate the working space of the first telescopic member 7 and the second telescopic member 8 .

[0055] The function of the cooling assembly is to cool the brake housing 1 and the brake assembly. The overall concept of the cooling assembly is as follows:

[0056] The cooling assembly includes a cooling pipe 9, a cooling box 10 and a pump (not shown);

[0057] A cooling annular groove 3.1 (i.e., a groove extending along the outer circumference) is provided on the outer circumference of the slider 3. Both ends of the cooling pipe 9 are connected to the cooling annular groove 3.1. When the cooling pipe 9 and the cooling annular groove 3.1 are connected, a closed circuit is formed, and the first cooling medium can circulate within the closed circuit. A pump member (e.g., a micro cooling pump) is connected to the cooling pipe 9, and the pump member can provide power for the circulation of the first cooling medium.

[0058] The cooling box 10 is sleeved on the outer periphery of the cooling pipe 9 (specifically, on the outer connecting section 2 9.e of the cooling pipe 9). A second cooling medium is provided in the cooling box 10. The second cooling medium absorbs the heat of the first cooling medium to achieve the purpose of cooling. Of course, in addition to this, the cooling pipe 9 in this embodiment can also be attached to the outer wall of the cooling box 10 to achieve the cooling effect.

[0059] It should be noted that, in this embodiment, only when the first friction block 4 is pressed against the end face of the brake disc 2 (i.e., the braking state), the cooling pipe 9 and the cooling ring groove 3.1 can be aligned and connected (i.e., a closed loop is formed), and the pump component remains in a working state at this time; on the contrary, when the first friction block 4 is out of contact with the end face of the brake disc 2 (i.e., the non-braking state), the cooling pipe 9 and the cooling ring groove 3.1 are in a misaligned state at this time, that is, the cooling pipe 9 and the cooling ring groove 3.1 are not connected at this time (a closed loop cannot be formed), and the outer peripheral wall of the slider 3 can block the first cooling medium in the cooling pipe 9 (specifically, cooling hole 1 9.a and cooling hole 2 9.b) to prevent the first cooling medium from flowing from the cooling pipe 9 into the gap between the slider 3 and the brake housing 1, and flowing out of the gap to cause medium leakage.

[0060] The specific structure of each component of the cooling assembly is as follows:

[0061] The cooling pipe 9 is mainly used to provide a channel for the circulation of the first cooling medium. The cooling pipe 9 is formed by connecting multiple sections. The cooling pipe 9 specifically includes a cooling hole 1 9.a, a cooling hole 2 9.b, a cooling hole 3 9.c, an external section 1 9.d, and an external section 2 9.e.

[0062] A cooling hole 9.a is provided at the upper end of the right brake housing 1.2. When the brake is in the braking state, the lower end opening of the cooling hole 9.a can communicate with the cooling ring groove 3.1 on the slider 3.

[0063] The second cooling hole 9.b is provided at the lower end of the right brake housing 1.2. When the brake is in the braking state, the upper end opening of the second cooling hole 9.b can communicate with the cooling ring groove 3.1 on the slider 3;

[0064] Cooling hole three 9.c is provided through the right end of the right brake housing 1.2;

[0065] The two ends of the external connection section 1 9.d are connected to the upper opening of the cooling hole 1 9.a and the upper opening of the cooling hole 3 9.c respectively through joints;

[0066] The two ends of the external connection section 9.e are connected to the lower opening of the second cooling hole 9.b and the lower opening of the third cooling hole 9.c through joints respectively;

[0067] As can be seen from the above, when in the braking state, the cooling hole 1 9.a, the external section 1 9.d, the cooling hole 3 9.c, the external section 2 9.e, the cooling hole 2 9.b and the cooling ring groove 3.1 on the slider 3 are connected in sequence to form a closed loop, that is, the slider 3 acts as an on-off valve block of the closed loop. When the closed loop is connected, the first cooling medium can circulate in the closed loop. When the closed loop is disconnected, the outer peripheral wall of the slider 3 blocks the lower end opening of the cooling hole 1 9.a and the upper end opening of the cooling hole 2 9.b.

[0068] Preferably, in order to prevent the first cooling medium from flowing out from the gap between the slider 3 and the right brake housing 1.2, the present embodiment further provides two groups of second sealing rings 13, both of which are arranged between the slider 3 and the right brake housing 1.2; in the sliding direction of the slider 3, the two groups of second sealing rings 13 are respectively located at the left and right ends of the cooling ring groove 3.1, and the axial distance between the two groups of second sealing rings 13 needs to meet the requirement that, in the braking or non-braking state, the cooling ring groove 3.1, the lower end opening of the cooling hole 1 9.a and the upper end opening of the cooling hole 2 9.b are all located between the two groups of second sealing rings 13 to prevent the first cooling medium from leaking out.

[0069] The cooling box 10 is closely fixed to the lower end of the right brake housing 1.2. The purpose of closely fixing the cooling box 10 to the lower end of the right brake housing 1.2 is to enable the second cooling medium in the cooling box 10 to provide a certain cooling effect for the right brake housing 1.2.

[0070] The external section 2 9 . e is arranged to penetrate the cooling box 10 , and the external section 2 9 . e can serve as a cooled section of a closed loop, and the first cooling medium in the external section 2 9 . e exchanges heat with the second cooling medium in the cooling box 10 .

[0071] The pump member is connected to the external section 1 9.d or the external section 2 9.e. It should be noted that the pump member in this embodiment only works when the closed circuit is connected (i.e., in the braking state).

[0072] In this embodiment, a control component is also included. The first telescopic member 7, the second telescopic member 8 and the pump member are directly or indirectly connected to the control component. The control component is used to coordinate and control the operation of each component. The specific structure of the control component refers to the existing technology.

[0073] The working process of the disc brake structure of this embodiment is as follows:

[0074] To brake:

[0075] 1. A braking signal is given externally and transmitted to the control component. The control component simultaneously controls the extension of the first telescopic member 7 and the operation of the pump member. The extension of the first telescopic member 7 causes the piston 6 to push the slider 3 and the first friction block 4 to slide rightward. The first friction block 4 is pressed against the left end face of the brake disc 2, and the second friction block 5 is in contact with the right end face of the brake disc 2. At this time, the brake is in the braking state;

[0076] 2. When in the braking state, the cooling ring groove 3.1 on the slider 3 connects the cooling hole 1 9.a and the cooling hole 2 9.b (that is, the cooling ring groove 3.1 connects the cooling pipe 9) to form a closed loop. The pump drives the first cooling medium in the closed loop to circulate in the closed loop. The second cooling medium in the cooling box 10 exchanges heat with the first cooling medium to cool the first cooling medium in the closed loop. The first cooling medium is used to cool the brake structure.

[0077] Release the brake:

[0078] 1. A brake release signal is given externally and transmitted to the control component. The control component simultaneously controls the extension of the second telescopic member 8 and the stop of the pump member. The extension of the second telescopic member 8 causes the slider 3 to push the piston 6 to move leftward. The first friction block 4 is disengaged from the left end face of the brake disc 2, and the second friction block 5 is disengaged from the right end face of the brake disc 2. At this time, the vehicle is in a non-braking state.

[0079] 2. In the non-braking state, the cooling hole 1 9.a and the cooling hole 2 9.b are cut off by the slider 3, and the slider 3 blocks the cooling hole 1 9.a and the cooling hole 2 9.b, the pump does not work, and the first cooling medium does not circulate.

[0080] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A disc brake structure, characterized in that: It comprises a brake housing (1), a brake assembly and a cooling assembly; The brake assembly is arranged in a brake housing (1); The brake assembly comprises a brake disc (2), a slider assembly, and a drive assembly; the brake disc (2) is fixed on the structure to be braked; the slider assembly is slidably arranged in the brake housing (1), and the slider assembly contacts the brake disc (2) to achieve braking of the brake disc (2); the drive assembly is arranged between the brake housing (1) and the slider assembly, and the drive assembly is used to drive the slider assembly to slide; The cooling assembly includes a cooling pipeline (9), a cooling box (10) and a pump; a cooling ring groove (3.1) is provided on the outer periphery of the slider assembly; both ends of the cooling pipeline (9) are used to communicate with the cooling ring groove (3.1), and the cooling pipeline (9) and the cooling ring groove (3.1) are connected to form a closed loop; a first cooling medium is provided inside the closed loop; the cooling box (10) is in contact with the cooling pipeline (9), and a second cooling medium for cooling the cooling pipeline (9) is provided inside the cooling box (10); the pump is connected with the cooling pipeline (9) and is used to drive the first cooling medium to circulate in the closed loop; When the slider assembly and the brake disc (2) come into contact with each other for braking, the cooling ring groove (3.1) and the cooling pipeline (9) are connected to form a closed loop; when the slider assembly and the brake disc (2) are out of contact, the cooling ring groove (3.1) and the cooling pipeline (9) are disconnected, and the outer peripheral wall of the slider assembly blocks the port of the cooling pipeline (9).

2. The disc brake structure according to claim 1, characterized in that: The slider assembly comprises a slider (3) and a first friction block (4) arranged on the slider; the slider (3) is slidably arranged in the brake housing (1); the first friction block (4) is used to contact the brake disc (2); and a cooling ring groove (3.1) is arranged on the outer periphery of the slider (3).

3. The disc brake structure according to claim 2, characterized in that: The slider assembly further comprises a second friction block (5) fixedly arranged in the brake housing, the first friction block (4) and the second friction block (5) are respectively arranged on both axial sides of the brake disc (2), and an axial gap A exists between the first friction block (4) and the second friction block (5) and the brake disc (2).

4. The disc brake structure according to claim 2, characterized in that: The driving assembly comprises a piston (6), a first telescopic member (7) and a second telescopic member (8); the piston (6) is slidably arranged in the brake housing (1); the two ends of the first telescopic member (7) are respectively connected to the inner wall of the brake housing (1) and the piston (6), and the first telescopic member (7) pushes the piston (6), the slider (3) and the first friction block (4) toward the brake disc (2); the two ends of the second telescopic member (8) are respectively connected to the inner wall of the brake housing (1) and the slider (3), and the second telescopic member (8) pushes the slider (3) and the first friction block (4) away from the brake disc (2).

5. The disc brake structure according to claim 4, characterized in that: The piston (6) is provided with a guide groove (6.1); the slider (3) is provided with a guide column (3.2); the guide column (3.2) is arranged in the guide groove (6.1), and the axial direction of the guide column (3.2) is consistent with the sliding direction of the slider (3).

6. The disc brake structure according to claim 5, characterized in that: An adjusting bolt (11) is threadedly connected to the piston (6); the adjusting bolt (11) is located between the guide column (3.2) and the guide groove (6.1), and the screwing direction of the adjusting bolt (11) is consistent with the sliding direction of the slider (3).

7. The disc brake structure according to claim 4, characterized in that: A first sealing ring (12) is provided between the piston (6) and the inner wall of the brake housing (1).

8. The disc brake structure according to claim 4, characterized in that: The first telescopic member (7) and the second telescopic member (8) are both memory springs.

9. The disc brake structure according to any one of claims 1 to 8, characterized in that: The cooling pipeline (9) comprises cooling hole one (9.a), cooling hole two (9.b), cooling hole three (9.c), external section one (9.d) and external section two (9.e); cooling hole one (9.a) and cooling hole two (9.b) are both provided on the brake housing (1), and one end of cooling hole one (9.a) and cooling hole two (9.b) are both communicated with the cooling ring groove (3.1); cooling hole three (9.c) is provided through the brake housing (1); the other end of cooling hole one (9.a) is communicated with cooling hole three (9.c) via external section one (9.d); the other end of cooling hole two (9.b) is communicated with cooling hole three (9.c) via external section two (9.e); and the cooling box (10) is sleeved on external section two (9.e).

10. The disc brake structure according to claim 9, characterized in that: Two sets of second sealing rings (13) are provided between the slider (3) and the inner wall of the brake housing (1); in the sliding direction of the slider (3), the cooling ring groove (3.1), the cooling hole 1 (9.a) and the cooling hole 2 (9.b) are all located between the two sets of second sealing rings (13).

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