Noise reducing anti-friction disc

Abstract

This invention discloses a noise-reducing and anti-friction friction disc, comprising a main shaft, on which a baffle, a friction disc, and a base are sequentially mounted. An axially protruding bushing is provided on the inner side of the friction disc, and the bushing is movably fitted onto the main shaft. The baffle and base are fixedly installed with the main shaft. Several elastic elements are provided between the base and the bushing. The outer ring of the baffle radially protrudes from the outer side of the main shaft, and several limiting posts are arranged around the baffle. One end face of the bushing abuts against the limiting posts, and the other end face abuts against the elastic elements. This invention, by adding a baffle and a base to the main shaft, allows the elastic elements on the base to apply elastic force to the friction disc, maintaining a certain working gap between the bottom surface of the friction disc and the bottom end cap surface. The limiting posts on the baffle abut against the bushing at their bottom, maintaining a certain working gap between the top surface of the friction disc and the armature surface, thereby ensuring that the friction disc does not rub against the contact surfaces on both sides during operation.

Description

Technical Field

[0001] This invention relates to the technical field of brakes, and in particular to a noise-reducing and anti-friction friction disc. Background Technology

[0002] Existing disc brakes, such as those shown in patents CN218992188U and CN113833786B, mainly focus on solving the problem of adjusting the gap between the friction disc and the contact surfaces on both sides, ensuring that the electromagnet armature can still reliably engage after the friction pads wear out, thus ensuring effective contact between the friction disc and the friction surfaces on both sides during braking and preventing brake failure. However, they neglect the noise problem caused by the high-speed rotation of the friction disc in non-braking states.

[0003] Due to factors such as unreasonable structural design, insufficient assembly precision, deformation under high-speed centrifugal force, or machining errors and installation deviations of the armature surface and end cover, the friction disc cannot maintain a stable gap with the contact surfaces on both sides. This causes the friction disc to come into contact with the armature surface and end cover during high-speed operation. This friction phenomenon not only generates obvious noise, but also aggravates the wear of the friction disc, armature surface and end cover, thereby shortening the service life of parts and increasing the maintenance cost and failure rate of the equipment. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art by proposing a noise-reducing and anti-friction friction disc that can solve the above problems.

[0005] To achieve the above objectives, this invention proposes a noise-reducing and anti-friction friction disc, comprising a main shaft, on which a baffle, a friction disc, and a base are sequentially mounted. An axially protruding bushing is provided on the inner side of the friction disc, and the bushing is movably fitted onto the main shaft. The baffle and the base are fixedly installed with the main shaft. A plurality of elastic elements are provided between the base and the bushing. The outer ring of the baffle radially protrudes outward from the outer side of the main shaft. A plurality of limiting posts are provided around the baffle. One end of each limiting post protrudes from the baffle near the bushing. One end face of the bushing abuts against the limiting post, and the other end face abuts against the elastic elements.

[0006] Preferably, the baffle is fixedly installed to the end face of the spindle by a number of fasteners, and the limiting post is located on the outside of the fasteners.

[0007] Preferably, the baffle plate is provided with a plurality of threaded holes, and the limiting post is threadedly installed in the threaded holes.

[0008] Preferably, the end of the limiting post away from the bushing has a protruding baffle and a locking nut threaded onto it.

[0009] Preferably, the limiting post is an internal hexagon screw, and the end of the limiting post away from the bushing is provided with an internal hexagon groove.

[0010] Preferably, the end of the limiting post away from the bushing is provided with a limiting head, and an anti-loosening spring is provided between the limiting head and the baffle.

[0011] Preferably, the baffle is provided with a reinforcing rib around its circumference, the reinforcing rib has a threaded hole, the limiting post is axially threaded into the threaded hole, and a fixing screw is radially installed on the reinforcing rib.

[0012] Preferably, the friction disc is a steel friction disc.

[0013] Preferably, the elastic element is a wave spring.

[0014] Preferably, the friction disc has an armature surface and an end cap surface on both sides, and the armature surface is axially slidably connected to the end cap surface through a guide assembly.

[0015] The beneficial effects of this invention are as follows: By adding a baffle and a base to the main shaft, the friction disc can move axially while the main shaft rotates. The elastic element on the base applies elastic force to the friction disc, maintaining a certain working gap between the bottom surface of the friction disc and the bottom end cap surface. The baffle is provided with a limiting post, the bottom of which abuts against the bushing, maintaining a certain working gap between the top surface of the friction disc and the armature surface. This ensures that the friction disc does not rub against the contact surfaces on both sides during operation, avoiding noise generation and extending the service life of the components. The steel friction disc has high structural strength, ensuring that the limiting post and bushing do not cause damage or deformation to the friction disc during repeated contact and impact.

[0016] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Figure 3 This is a schematic diagram of the structure of Embodiment 3 of the present invention; Figure 4 This is a schematic diagram of the spindle installation of the present invention.

[0018] In the diagram: 1. Spindle; 2. Baffle; 3. Friction disc; 4. Base; 5. Bushing; 6. Elastic element; 7. Limiting pin; 8. Limiting head; 9. Anti-loosening spring; 10. Fixing screw; 11. Armature face; 12. End cap face; 20. Fastener; 21. Threaded hole; 22. Reinforcing rib; 71. Locking nut. Detailed Implementation

[0019] Example 1 See Figure 1 , Figure 2 A noise-reducing and anti-friction friction disc includes a main shaft 1. A baffle 2, a friction disc 3, and a base 4 are sequentially mounted on the main shaft 1. An axially protruding bushing 5 is provided on the inner side of the friction disc 3. The bushing 5 is movably sleeved on the main shaft 1. The baffle 2 and the base 4 are fixedly installed with the main shaft 1. A plurality of elastic elements 6 are provided between the base 4 and the bushing 5. The outer ring of the baffle 2 is radially protruding on the outer side of the main shaft 1. A plurality of limiting posts 7 are provided around the baffle 2. One end of the limiting post 7 near the bushing 5 protrudes from the baffle 2. One end face of the bushing 5 is used to abut against the limiting post 7, and the other end face is used to abut against the elastic element 6.

[0020] The baffle 2 is fixedly installed to the end face of the main shaft 1 by a number of fasteners 20, and the limiting post 7 is located on the outside of the fasteners 20.

[0021] The baffle 2 is provided with a plurality of threaded holes 21, and the limiting post 7 is threadedly installed with the threaded holes 21.

[0022] The end of the limiting post 7 away from the bushing 5 protrudes from the baffle 2 and is threaded with a locking nut 71.

[0023] The limiting post 7 is an internal hexagon screw, and the end of the limiting post 7 away from the bushing 5 is provided with an internal hexagon groove.

[0024] The friction disc 3 is a steel friction disc.

[0025] The elastic element 6 is a wave spring.

[0026] The friction disk 3 has an armature surface 11 and an end cap surface 12 on both sides, and the armature surface 11 is axially slidably connected to the end cap surface 12 through a guide assembly.

[0027] Since the limit post needs to withstand repeated impact loads, its anti-loosening reliability is crucial.

[0028] In this embodiment, a locking nut is installed on the outside of the limiting post. The locking nut locks the limiting post, effectively preventing the limiting post from loosening under repeated impacts.

[0029] Example 2 The end of the limiting post 7 away from the bushing 5 is provided with a limiting head 8, and an anti-loosening spring 9 is provided between the limiting head 8 and the baffle 2.

[0030] The limit head is equipped with an internal hexagonal groove.

[0031] Everything else is the same as in Example 1.

[0032] In this embodiment, an axial preload is applied to the limiting post by an anti-loosening spring. The axial pressure generated by the spring increases the frictional torque between the limiting post and the mating parts, thereby effectively suppressing the circumferential rotation of the limiting post during operation and achieving an anti-loosening positioning effect.

[0033] Example 3 The baffle 2 is provided with a reinforcing rib 22, and the reinforcing rib 22 is provided with a threaded hole 21. The limiting post 7 is axially threaded in the threaded hole 21, and a fixing screw 10 is radially installed on the reinforcing rib 22.

[0034] Everything else is the same as in Example 1.

[0035] In this embodiment, the fixing screw is used to radially tighten the fixing limit post 7. The radial clamping force of the fixing screw increases the frictional torque between the screw and the threaded hole, which effectively inhibits the screw from loosening under vibration, impact and other working conditions, and achieves a reliable anti-loosening effect.

[0036] Working process of this invention: During operation, when the brake is de-energized, the armature surface is pushed down to contact the brake surface of the steel friction disc. After the friction disc is pressed down, it compresses the elastic element at the bottom, causing the steel friction disc to contact the end cover surface, thus realizing the braking function of the brake. When the brake is energized and engaged, the brake armature surface moves upward, and at the same time, the steel friction disc moves upward through the upward thrust of the elastic element until it contacts the limit post. At this time, there is a certain working gap between the steel friction disc and both sides of the brake armature surface and end cover surface, which can ensure that the friction disc will not contact the armature surface or end cover and generate friction noise when it is running at high speed. At the same time, it can solve the problem of friction-induced wear of the friction disc and improve the service life of the friction disc.

[0037] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. A noise-reducing and anti-friction disc, characterized in that: Includes a main shaft (1), on which a baffle (2), a friction disc (3) and a base (4) are installed in sequence. The friction disc (3) has an axially protruding bushing (5) on its inner side. The bushing (5) is movably sleeved on the main shaft (1). The baffle (2) and the base (4) are fixedly installed with the main shaft (1). Several elastic elements (6) are provided between the base (4) and the bushing (5). The outer ring of the baffle (2) is radially protruding on the outside of the main shaft (1). Several limiting posts (7) are provided on the baffle (2). The end of the limiting post (7) near the bushing (5) protrudes from the baffle (2). One end face of the bushing (5) is used to abut against the limiting post (7), and the other end face is used to abut against the elastic element (6).

2. The noise-reducing and anti-friction disc as described in claim 1, characterized in that: The baffle (2) is fixedly installed to the end face of the spindle (1) by a number of fasteners (20), and the limiting post (7) is located on the outside of the fasteners (20).

3. The noise-reducing and anti-friction disc as described in claim 1, characterized in that: The baffle (2) is provided with several threaded holes (21) on its upper ring, and the limiting post (7) is threadedly installed with the threaded holes (21).

4. The noise-reducing and anti-friction disc as described in claim 3, characterized in that: The end of the limiting post (7) away from the bushing (5) protrudes from the baffle (2) and is threaded with a locking nut (71).

5. The noise-reducing and anti-friction disc as described in claim 3, characterized in that: The limiting post (7) is an internal hexagon screw, and the end of the limiting post (7) away from the bushing (5) is provided with an internal hexagon groove.

6. The noise-reducing and anti-friction disc as described in claim 3, characterized in that: The limiting post (7) is provided with a limiting head (8) at the end away from the bushing (5), and an anti-loosening spring (9) is provided between the limiting head (8) and the baffle (2).

7. The noise-reducing and anti-friction disc as described in claim 1, characterized in that: The baffle (2) is provided with a reinforcing rib (22) and a threaded hole (21) is provided on the reinforcing rib (22). The limiting post (7) is axially threaded in the threaded hole (21). A fixing screw (10) is radially installed on the reinforcing rib (22) and the fixing screw (10) radially abuts against the limiting post (7).

8. The noise-reducing and anti-friction disc as described in claim 1, characterized in that: The friction disc (3) is a steel friction disc.

9. The noise-reducing and anti-friction disc as described in claim 1, characterized in that: The elastic element (6) is a wave spring.

10. The noise-reducing and anti-friction disc as described in claim 1, characterized in that: The friction disc (3) has an armature surface (11) and an end cap surface (12) on both sides, and the armature surface (11) is axially slidably connected to the end cap surface (12) through a guide assembly.

Images