A 33-inch heavy-duty disc brake

Abstract

The utility model belongs to the field of brake, especially relates to a 33 inch heavy -duty disc brake, including calliper, be provided with two power devices parallel on calliper, and two power devices all are equipped with brake pad, be located between two brakes for connecting the brake disc on axle. Still be equipped with adjusting assembly between power device and brake pad, in order to compensate adjustment to its distance with brake disc after brake pad wear. Adjusting assembly includes telescopic device that can be detachably equipped on power device, and is equipped with adjusting mechanism that can adjust the length of telescopic device on telescopic device, and brake pad detachably is equipped on the telescopic end of telescopic device. The utility model sets up adjusting assembly, when brake pad wears, can adjust the distance between brake pad and brake disc through adjusting assembly, to reduce the compensation amount of first hydraulic cylinder to brake pad moving distance and the invalid stroke of brake pedal, make vehicle braking more fast, improve driving safety.

Description

Technical Field

[0001] This utility model belongs to the field of brakes, and in particular relates to a 33-inch heavy-duty disc brake. Background Technology

[0002] Disc brakes, due to their excellent heat dissipation, stable braking force, and good resistance to water fade, have become the core braking device for modern vehicles, especially heavy-duty commercial vehicles and construction machinery with extremely high braking performance requirements. Their working principle involves hydraulically driving two opposing pistons within the brake caliper, pushing the connected brake pads against the brake disc to achieve braking. In heavy-duty disc brakes of 33 inches and above, due to the enormous load they bear and the harsh working environment (such as continuous high temperatures and high dust levels), the wear rate of the brake pads is extremely rapid. This causes the actual operating clearance between the brake pads and the brake disc to gradually increase over time. This increase in clearance directly translates into an increase in the brake pedal travel. The brake hydraulic pump needs to pump more brake fluid to fill the increased cylinder volume due to the outward movement of the pistons before effective braking pressure can be established. This extended "ineffective travel" may manifest as a "softer" pedal and "worse pedal feel" in daily driving; however, in sudden emergency braking situations, it will directly lead to a longer driver reaction time and a delayed braking force build-up, significantly increasing the vehicle's braking distance and posing a serious threat to driving safety. Utility Model Content

[0003] The purpose of this invention is to provide a 33-inch heavy-duty disc brake to solve the technical problems mentioned in the background section.

[0004] To achieve the above objectives, the specific technical solution of this utility model for a 33-inch heavy-duty disc brake is as follows: A 33-inch heavy-duty disc brake includes a caliper with two power units mounted parallel to it. Each power unit has brake pads, and a brake disc, connected to the axle, is located between the two brake units. An adjustment assembly is also provided between the power units and the brake pads to compensate for wear and adjust the distance between the brake pads and the brake disc. The adjustment assembly includes a detachable telescopic device mounted on the power unit, and the telescopic device has an adjustment mechanism for length adjustment. The brake pads are detachably mounted on the telescopic end of the telescopic device.

[0005] Furthermore, the telescopic device is a second hydraulic cylinder, which includes a second cylinder body. A second piston is slidably and sealed on the second cylinder body, and a connecting bracket is provided at the end of the second piston. The connecting bracket is detachably connected to the brake pad. The second cylinder body is rectangular, with a threaded hole perpendicularly opened at its edge. A screw is threaded into the threaded hole, and a third piston is slidably and sealed within the second cylinder body. The end of the screw is rotatably connected to the third piston.

[0006] Furthermore, the center of the side wall of the connecting bracket has a recessed groove that is closed on all sides, and the groove is adapted to the outer contour of the brake pad backing plate. The top of the connecting bracket has a vertical through hole, and a retaining spring is inserted into the through hole to limit the position of the backing plate.

[0007] Furthermore, the power unit is a first hydraulic cylinder.

[0008] Furthermore, the first hydraulic cylinder includes a first cylinder body and a first piston that is slidably and sealed on the first cylinder body, and a first mounting plate is provided at the outer end of the first piston. A second mounting plate is provided at one end of the second cylinder body opposite to the connecting bracket, and the first mounting plate and the second mounting plate are detachably connected by connecting bolts. A lifting plate is provided inside the caliper, and the lifting plate is slidably disposed with respect to the first piston.

[0009] Furthermore, a distance measuring device is provided on the top surface of the second cylinder block, and the distance measuring device is located above the connecting bracket. The distance measuring device is used to detect the wear degree of the brake pads.

[0010] The 33-inch heavy-duty disc brake of this utility model has the following advantages: This invention provides an adjustment component between the power unit and the brake pads. When the brake pads wear out, the distance between the brake pads and the brake disc can be adjusted through the adjustment component. This reduces the compensation amount of the first hydraulic cylinder for the movement distance of the brake pads and the ineffective travel of the brake pedal, making the vehicle brake faster and effectively improving driving safety. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a 33-inch heavy-duty disc brake according to the present invention. Figure 2 This is a schematic diagram of the adjustment component structure of this utility model; Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0012] Explanation of markings in the diagram: 1. Caliper; 2. First cylinder; 3. First piston; 4. Brake pad; 5. Brake disc; 6. First mounting plate; 7. Second cylinder; 8. Second mounting plate; 9. Second piston; 10. Connecting bracket; 11. Screw; 12. Third piston; 13. Rangefinder; 14. Groove; 15. Through hole; 16. Snap ring; 17. Lifting plate. Detailed Implementation

[0013] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of a 33-inch heavy-duty disc brake.

[0014] like Figures 1 to 3 As shown, this utility model discloses a 33-inch heavy-duty disc brake, including a caliper 1. The caliper 1 is U-shaped, and two power units are arranged parallel to each other on the caliper 1, that is, the two power units are respectively set on the two vertical plates of the caliper 1. Brake pads 4 are provided on both power units, and a brake disc 5, which is connected to the axle, is located between the two brake pads 4. The power units are connected to the vehicle's brake pedal via an onboard computer. When the driver presses the brake pedal, the onboard computer detects that the brake pedal has been pressed and sends a signal to the power units. The two power units then drive their respective connected brake pads 4 toward the brake disc 5, causing the two brake pads 4 to approach and clamp onto the brake disc. The brake pads 4 and brake disc 5 generate friction, thereby achieving a braking effect on the brake disc. Of course, the axle connected to the brake disc will also stop rotating.

[0015] Specifically, the power unit is a first hydraulic cylinder. The hydraulic pump of the first hydraulic cylinder is connected to the brake pedal via the vehicle's onboard computer. In this embodiment, the power unit is preferably a first hydraulic cylinder, which has stable and high torque support force, high hydraulic transmission efficiency, and rapid response, enabling the brake pads 4 to provide strong and stable braking force to the brake disc 5.

[0016] Preferably, an adjustment assembly is provided between the power unit (i.e., the first hydraulic cylinder) and the brake pads 4. This assembly compensates for wear on the brake pads 4 by adjusting the distance between them and the brake disc 5, reducing the compensation amount for the brake pads 4's movement by the first hydraulic cylinder and the ineffective travel of the brake pedal. This results in faster braking and improved driving safety. Furthermore, due to the enormous load and harsh working environment (such as continuous high temperature and high dust) of the 33-inch heavy-duty brakes during braking, the brake pads 4 wear extremely quickly. Whenever the driver feels the brake pedal travel is too long or uncomfortable, the distance between the brake pads 4 and the brake disc 5 can be adjusted using the adjustment assembly. Specifically, the adjustment assembly includes a detachable telescopic device mounted on the power unit, with an adjustment mechanism for length adjustment. The brake pads 4 are detachably mounted on the telescopic end of the telescopic device. Operating the adjustment mechanism allows for adjustment of the distance between the brake pads 4 and the brake disc 5. This can be done by the driver, saving maintenance costs and improving the vehicle's braking effect and sensitivity, effectively enhancing driving safety.

[0017] The aforementioned telescopic device includes a second hydraulic cylinder, comprising a second cylinder body 7, on which a second piston 9 is slidably and sealed. Specifically, the second cylinder body 7 is rectangular, and the second piston 9 is located at the center of the second cylinder body 7. A threaded hole is vertically formed on the edge of the second piston 9, and a screw 11 is threaded into the threaded hole. A third piston 12 is slidably and sealed within the second cylinder body 7, and the end of the screw 11 is rotatably connected to the third piston 12. It should be noted that a valve (not shown in the figure) for adding and draining oil is provided on the edge of the second cylinder body 7 to facilitate the filling and draining of oil inside the second cylinder body 7. In this embodiment, the threaded hole is located on the bottom surface of the second cylinder body 7, facilitating manual rotation of the screw 11 within the threaded hole. When adjusting the distance between the friction surface of the brake pad 4 and the brake disc 5, simply rotate the screw 11. The screw 11 moves closer to the center of the second cylinder 7, pushing the second piston 9 to move. The second piston 9 applies pressure to the hydraulic oil inside the second cylinder 7. The pressurized hydraulic oil pushes the second piston 9 outward, causing the brake pad 4 mounted on the second piston 9 to move towards the brake disc 5, thus adjusting the distance between the brake pad 4 and the brake disc 5. Conversely, if the brake pad 4 is replaced or the distance between the brake pad 4 and the brake disc 5 needs to be increased, the screw 11 needs to be rotated in the opposite direction. The screw 11 moves downward, causing the second piston 9 to descend and push it into the second cylinder 7.

[0018] As a further improvement, the second piston 9 is provided with a connecting bracket 10 at its end, and the connecting bracket 10 is detachably connected to the brake pad 4, thereby facilitating the replacement and maintenance of the brake pad 4 in the future. Specifically, as in the prior art, the brake pad 4 consists of a backing plate, a heat insulation layer, and a friction pad, with the heat insulation layer located between the backing plate and the friction pad. Figure 2 and Figure 3 As shown, the connecting frame 10 has a recessed and enclosed groove 14 at the center of its side wall, which fits the outer contour of the back plate of the brake pad 4. A through hole 15 is vertically formed at the top of the connecting frame 10, and a retaining spring 16 is inserted into the through hole 15 to limit the back plate. After the back plate of the brake pad 4 is inserted into the groove 14, the outer end face of the back plate is exactly inside the through hole 15. By inserting the retaining spring 16 into the through hole 15, the back plate of the brake pad 4 can be limited, thus securing the brake pad 4 to the connecting frame 10. For disassembly, simply remove the retaining spring 16 from the through hole 15 to remove the brake pad 4; the operation is simple and convenient. The retaining spring 16 is U-shaped; one vertical rod of the retaining spring 16 can be inserted into the through hole 15, while the other vertical rod can be directly engaged with the outer frame of the connecting frame 10.

[0019] To facilitate the connection between the first hydraulic cylinder and the adjusting assembly, the first hydraulic cylinder consists of a first cylinder body 2 and a first piston 3 that is slidably mounted on the first cylinder body 2, with a first mounting plate 6 at the outer end of the first piston 3. A second mounting plate 8 is located at one end of the second cylinder body 7 opposite the connecting frame 10, and the first mounting plate 6 and the second mounting plate 8 are detachably connected by connecting bolts. A lifting plate 17 is also provided inside the caliper 1, and the lifting plate 17 is slidably mounted to the first piston 3. The lifting plate 17 supports the first piston 3, reducing the load on the first piston 3 of the first hydraulic cylinder. The lifting plate 17 is connected to the first piston 3 by a rubber ring, ensuring that the lifting plate 17 will not damage the first piston 3 during operation. Furthermore, the elastic deformation of the rubber ring can compensate for the return movement of the first piston 3 after it moves, thereby improving the return effect of the first piston 3.

[0020] As another preferred embodiment, a distance measuring device 13 is also provided on the top surface of the second cylinder block 7, and the distance measuring device 13 is located above the connecting bracket 10. The distance measuring device 13 is used to detect the wear degree of the brake pads 4. Specifically, the distance measuring device 13 is connected to the vehicle display screen through the vehicle computer. The distance measuring device 13 can process the distance between the brake pads 4 and the brake disc 5 when they are in contact and display it on the display screen. When the distance between the brake pads 4 and the brake disc 5 is smaller than a set value, the display screen will prompt the driver to replace the brake pads 4 to ensure subsequent driving safety.

[0021] Working principle: When adjusting the gap between the brake pads 4 and the brake disc 5, the operator can use a tool to rotate the screw 11. During the rotation of the screw 11, the third piston 12 moves closer to the center of the second cylinder 7, thereby applying pressure to the hydraulic oil in the second cylinder 7. The hydraulic oil, under pressure, pushes the second piston 9 outward, and the brake pads 4, which are mounted on the second piston 9 via the connecting bracket 10, move closer to the brake disc 5. Conversely, when increasing the gap between the brake pads 4 and the brake disc 5, the screw 11 is rotated in the opposite direction. The screw 11 causes the third piston 12 to descend, and the second piston 9 moves closer to the second cylinder 7. Of course, the operator can also apply a pushing force to the second piston 9 to make it move closer to the second cylinder 7.

[0022] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A 33-inch heavy-duty disc brake, characterized in that: Includes a caliper (1), two power units are arranged in parallel on the caliper (1), and each power unit is provided with a brake pad (4), and a brake disc (5) connected to the axle is located between the two brakes; An adjustment assembly is also provided between the power unit and the brake pads (4) so ​​that the distance between the brake pads (4) and the brake disc (5) can be adjusted to compensate for wear. The adjustment assembly includes a telescopic device that is detachably mounted on the power unit, and the telescopic device is provided with an adjustment mechanism that can adjust the length of the telescopic device, and the brake pad (4) is detachably mounted on the telescopic end of the telescopic device.

2. A 33-inch heavy-duty disc brake according to claim 1, characterized in that: The telescopic device is a second hydraulic cylinder, and the second hydraulic cylinder includes a second cylinder body (7), and a second piston (9) is provided on the second cylinder body (7) in a sealed sliding manner. A connecting frame (10) is provided at the end of the second piston (9), and the connecting frame (10) and the brake pad (4) are detachably connected. The second cylinder (7) is rectangular, with a threaded hole vertically opened at its edge position, and a screw (11) is threadedly connected inside the threaded hole. A third piston (12) is sealed and slidably provided inside the second cylinder (7), and the end of the screw (11) is rotatably connected to the third piston (12).

3. A 33-inch heavy-duty disc brake according to claim 2, characterized in that: The connecting frame (10) has a recessed groove (14) at the center of its side wall, which is closed on all sides, and the groove (14) is adapted to the outer contour of the back plate of the brake pad (4). The top of the connecting frame (10) has a vertical through hole (15), and a retaining spring (16) for limiting the back plate is inserted in the through hole (15).

4. A 33-inch heavy-duty disc brake according to any one of claims 1 to 3, characterized in that: The power unit is a first hydraulic cylinder.

5. A 33-inch heavy-duty disc brake according to claim 4, characterized in that: The first hydraulic cylinder includes a first cylinder body (2) and a first piston (3) that is sealed and slidably disposed on the first cylinder body (2), and a first mounting plate (6) is provided at the outer end of the first piston (3); A second mounting plate (8) is provided at one end of the second cylinder (7) relative to the connecting bracket (10), and the first mounting plate (6) and the second mounting plate (8) are detachably connected by connecting bolts; A lifting plate (17) is provided inside the caliper (1), and the lifting plate (17) is slidably disposed with the first piston (3).

6. A 33-inch heavy-duty disc brake according to claim 5, characterized in that: The top surface of the second cylinder (7) is provided with a rangefinder (13), and the rangefinder (13) is located above the connecting bracket (10), and the rangefinder (13) is used to detect the wear degree of the brake pads (4).

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