A disc brake with adjustable brake gap

Abstract

The utility model discloses a disc brake of brake gap adjustable, including brake casing and piston jar, be equipped with end cover on piston jar, have the piston of sliding connection in piston jar, be equipped with piston rod on the piston, be equipped with baffle ring on piston rod, be equipped with elastic member between baffle ring and piston jar, have the friction plate base of sliding connection on brake casing, the return plunger mounting hole of setting up on brake casing is equipped with on the friction plate base outside, be equipped with friction plate return plunger in return plunger mounting hole, the central part of friction plate base is equipped with friction plate, the central part of piston rod sets up composite hole, and the composite hole includes screw hole and light hole, and be equipped with adjusting shaft in composite hole, and adjusting shaft includes stud part and light rod part, set up working hole on end cover, and one end of adjusting shaft abuts against friction plate base, and the other end is equipped with the spin of working hole and reaches out. The disc brake can realize the quick adjustment of the position of friction plate after wearing, and increase the use time of friction plate.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, and more specifically, it relates to a disc brake with adjustable braking clearance. Background Technology

[0002] Disc brakes, as a critical safety component of transmission systems, have been widely applied in heavy-duty industrial fields such as mining machinery, heavy lifting equipment, and offshore oil drilling platforms. Under typical operating conditions, the wear of the friction pads is limited by dynamic parameters such as the frequency of braking engagement, sliding speed, and contact pressure. Theoretically, when the friction pad thickness is within the design allowable wear range (usually 20%-30% of the initial thickness), the standard torque can be restored through a clearance compensation mechanism. However, in actual use, due to the difficulty of replacing parts, the replacement cycle is usually increased, thus posing a safety hazard. Therefore, this invention proposes a disc brake with adjustable brake clearance. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a disc brake with adjustable braking clearance.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: This utility model relates to a disc brake with adjustable brake clearance, comprising a brake housing and a piston cylinder. One end of the piston cylinder is connected to the brake housing, and the other end is provided with an end cap. A piston is slidably connected inside the piston cylinder. A piston rod is provided on the piston, extending into the brake housing. A retaining ring extending away from the axis is provided on the piston rod. An elastic element is provided between the retaining ring and the piston cylinder, fitted onto the piston rod. The elastic element is located inside the brake housing. A friction pad base is slidably connected to the brake housing. A friction pad base has a groove formed outside the groove. The brake housing has a return plunger mounting hole, and a friction plate return plunger is provided in the return plunger mounting hole. The friction plate return plunger includes an L-shaped hook, an upper spring washer, a lower spring washer, and a return spring. The L-shaped hook includes a straight rod portion slidably connected to the brake housing and a hook portion provided at the end of the straight rod portion. The hook portion hooks the edge of the friction plate base. The upper spring washer is fixedly connected to the straight rod portion. The lower spring washer is slidably connected to the straight rod portion. The return spring is sleeved on the straight rod portion, with one end abutting against the upper spring washer and the other end abutting against the lower spring washer. A friction plate is provided in the center of the friction plate base.

[0005] The piston rod has a composite hole in the center, which includes a threaded hole near the friction plate base and a smooth hole away from the friction plate base. An adjusting shaft is provided in the composite hole. The adjusting shaft includes a stud part threaded to the threaded hole and a smooth rod part slidably connected in the smooth hole. The end cover has a working hole for the smooth rod part to extend out. One end of the adjusting shaft abuts against the friction plate base, and the other end has a rotating part that extends out of the working hole.

[0006] The present invention is further configured such that: the rotating part is in the shape of a non-rotating column, and a locking plate is detachably connected to the end cover, and the locking plate is provided with a locking groove for the rotating part to be inserted into and for its rotation to be restricted.

[0007] The present invention is further configured such that a thrust washer is provided on the adjusting shaft between the adjusting shaft and the friction plate base.

[0008] The present invention is further configured such that the elastic element is a disc spring.

[0009] In summary, the present invention has the following beneficial effects: the disc brake with adjustable braking clearance involved in the present invention can realize the rapid adjustment of the position of the friction pad after wear, increase the service life of the friction pad, and has complete overall functions and strong practicality. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the internal structure of this utility model in the view of the main subject.

[0011] Figure 2 This is a schematic diagram of the internal structure of this utility model in a top view.

[0012] Figure 3 This is a side view of the structure of this utility model. Detailed Implementation

[0013] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the patent claims of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0014] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0015] Example 1

[0016] See Figures 1 to 3As shown, this embodiment involves an adjustable disc brake, including a brake housing 1 and a piston cylinder 2. One end of the piston cylinder 2 is connected to the brake housing, and the other end is provided with an end cap 3. A piston 4 is slidably connected inside the piston cylinder 2. A piston rod 5 extends into the brake housing on the piston 4. A retaining ring 6 extends away from the axis on the piston rod 5. An elastic element 7, which is a disc spring, is provided between the retaining ring 6 and the piston cylinder 2 and is sleeved on the piston rod. The elastic element 7 is located inside the brake housing 1. A friction pad base 8 is slidably connected to the brake housing 1. A return plunger mounting hole 9 is provided on the brake housing outside the friction pad base 8. A friction plate return plunger is provided in the plunger mounting hole 9. The friction plate return plunger includes an L-shaped hook 10, an upper spring washer 11, a lower spring washer 12, and a return spring 13. The L-shaped hook 10 includes a straight rod portion 101 slidably connected to the brake housing and a hook portion 102 provided at the end of the straight rod portion. The hook portion 102 hooks the edge of the friction plate base 8. The upper spring washer 11 is fixedly connected to the straight rod portion 101. The lower spring washer 12 is slidably connected to the straight rod portion 101. The return spring 13 is sleeved on the straight rod portion and one end abuts against the upper spring washer 11 and the other end abuts against the lower spring washer 12. A friction plate 14 is provided in the center of the friction plate base 8.

[0017] The piston rod 5 has a composite hole 15 in the center. The composite hole 15 includes a threaded hole 151 near the friction plate base and a smooth hole 152 away from the friction plate base. An adjusting shaft 16 is provided in the composite hole 15. The adjusting shaft 16 includes a stud part 161 threadedly connected to the threaded hole and a smooth rod part 162 slidably connected in the smooth hole. The end cover 3 has a working hole 17 for the smooth rod part to extend out. One end of the adjusting shaft 16 abuts against the friction plate base 8, and the other end has a rotating part 18 extending out of the working hole.

[0018] Furthermore, the rotating part 18 is in the shape of a non-rotating column, and a locking plate 19 is detachably connected to the end cover 3. The locking plate 19 has a locking groove 20 for the rotating part to be inserted into and for its rotation to be restricted.

[0019] In this implementation, an adjusting shaft is added inside the brake piston rod, enabling rapid adjustment of the friction pads after wear while maintaining consistent brake performance. A thread is machined into one end of the adjusting shaft, forming a threaded connection with the inner wall of the piston rod, and the adjusting shaft also forms a surface contact fit with the friction pad positioning base. A rotating part is provided at the other end of the adjusting shaft, working with a locking plate to form an axial limiting system. After a period of use, the friction pads wear down, increasing the friction gap and causing a decrease in braking force. By removing the locking plate and rotating the adjusting shaft, the friction pads can be reset to their original friction gap position, while maintaining the preload and response time of the disc spring in the brake. This process is not only convenient and efficient, reducing brake disassembly, but also effectively restores the friction pads to their optimal working condition, thus ensuring continuous and excellent braking performance.

[0020] Example 2

[0021] See Figures 1 to 3 As shown, the disc brake with adjustable braking clearance involved in this embodiment is further configured, based on embodiment 1, to have a thrust washer 21 provided on the adjusting shaft between the adjusting shaft 16 and the friction pad base 8.

[0022] In this embodiment, the thrust washer 21 is used as a gasket.

[0023] The present invention relates to an adjustable disc brake, which can quickly adjust the position of the friction pad after wear, thereby increasing the service life of the friction pad. It has complete functions and strong practicality.

[0024] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the actual orientation or positional relationship shown. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the embodiments and according to the specific circumstances.

[0025] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A disc brake with adjustable brake clearance, comprising a brake housing and a piston cylinder, one end of the piston cylinder being connected to the brake housing and the other end having an end cap, a piston being slidably connected inside the piston cylinder, a piston rod extending into the brake housing being provided on the piston rod, a retaining ring extending away from the axis being provided on the piston rod, an elastic element sleeved on the piston rod being provided between the retaining ring and the piston cylinder, the elastic element being disposed inside the brake housing, characterized in that: A friction pad base is slidably connected to the brake housing. A return plunger mounting hole is provided on the brake housing outside the friction pad base. A friction pad return plunger is provided in the return plunger mounting hole. The friction pad return plunger includes an L-shaped hook, an upper spring washer, a lower spring washer, and a return spring. The L-shaped hook includes a straight rod portion slidably connected to the brake housing and a hook portion provided at the end of the straight rod portion. The hook portion hooks the edge of the friction pad base. The upper spring washer is fixedly connected to the straight rod portion. The lower spring washer is slidably connected to the straight rod portion. The return spring is sleeved on the straight rod portion, with one end abutting against the upper spring washer and the other end abutting against the lower spring washer. A friction pad is provided in the center of the friction pad base. The piston rod has a composite hole in the center, which includes a threaded hole near the friction plate base and a smooth hole away from the friction plate base. An adjusting shaft is provided in the composite hole. The adjusting shaft includes a stud part threaded to the threaded hole and a smooth rod part slidably connected in the smooth hole. The end cover has a working hole for the smooth rod part to extend out. One end of the adjusting shaft abuts against the friction plate base, and the other end has a rotating part that extends out of the working hole.

2. The adjustable disc brake according to claim 1, characterized in that: The rotating part is in the shape of a non-rotating column, and a locking plate is detachably connected to the end cover. The locking plate has a locking groove for the rotating part to be inserted into and for its rotation to be restricted.

3. The adjustable disc brake according to claim 2, characterized in that: A thrust washer is provided on the adjusting shaft between the adjusting shaft and the friction plate base.

4. The disc brake with adjustable brake clearance according to any one of claims 1-3, characterized in that: The elastic element is a disc spring.

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