Brake separation mechanism of traction machine
By embedding an elastic element in a groove on the end cover of the traction machine, the problems of wear and noise between the brake disc and the end cover during traction machine startup are solved, achieving low wear and noise reduction of the brake disc, and improving the durability of the elastic element.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-19
- Publication Date
- 2026-03-03
AI Technical Summary
When the traction machine starts, there is a rubbing phenomenon between the brake disc of the brake and the braking surface of the traction machine, which leads to increased wear and noise.
Multiple elastic elements are embedded in grooves on the end cover of the traction machine. When the traction machine is energized, the elastic elements push the brake disc to separate from the end cover, thus avoiding wear and noise.
It effectively reduces brake disc wear and noise, ensures the integrity of the friction area, and extends the service life of elastic components.
Smart Images
Figure CN223964800U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of traction machine technology, and in particular to a traction machine brake separation mechanism. Background Technology
[0002] When a traction machine stops working, it needs to be held in a stationary state by a brake. The brake maintains the traction machine's state by pressing a brake disc against the stationary part of the traction machine.
[0003] Before the traction machine starts, the brake is energized, causing the brake disc to lose the driving force of the armature. At this time, the brake disc of the brake is in contact with the braking surface of the traction machine, and the centrifugal force of the traction machine during rotation is required to disengage the brake disc from the braking surface. Therefore, when the traction machine starts, there is always a rubbing phenomenon between the brake disc and the braking surface of the traction machine, which increases the wear of the brake disc and the noise during startup. Utility Model Content
[0004] One objective of this invention is to provide a traction machine brake separation mechanism that can reduce or avoid wear and noise of the brake disc during traction machine startup.
[0005] Another objective of this invention is to ensure the long-term durability of the elastic component.
[0006] A further objective of this invention is to better separate the brake disc and the end cap.
[0007] An embodiment of this utility model provides a traction mechanism brake separation mechanism, including a brake and a brake assembly arranged in sequence;
[0008] The brake includes a brake disc and a drive unit. The brake disc is configured to rotate synchronously with the main shaft of the traction machine and can move axially along the main shaft. The drive unit is used to push the brake disc toward the end cover so that the brake disc is in a braking position pressing against the end cover. The drive unit is also used to form a state separated from the brake disc so that the brake disc is in a non-braking state.
[0009] The braking assembly includes an end cap and multiple elastic elements. The end cap is fixedly connected to the fixed part of the traction machine. The end cap has a braking surface for fitting against the brake disc and a groove recessed in the braking surface. Multiple elastic elements are disposed in the groove. When the brake disc is in the braking position, the elastic elements are compressed to be flush with the braking surface. When the brake disc is in the non-braking state, the elastic elements push the brake disc to separate from the end cap.
[0010] Optionally, the elastic element is detachably connected to the end cap.
[0011] Optionally, the elastic element is a ball-head spring plunger, with the side having the ball head close to the brake disc.
[0012] Optionally, a threaded connection is formed between the elastic element and the end cap.
[0013] Optionally, the connection between the sidewall of the groove and the braking surface is provided with a chamfer or rounding.
[0014] Optionally, the elastic element is uniformly distributed circumferentially along the main axis.
[0015] Optionally, the preload of all the elastic elements located on the lower side of the spindle is greater than the preload of all the elastic elements located on the upper side of the spindle.
[0016] Optionally, each of the elastic elements has the same preload, and the number of all the elastic elements located on the lower side of the main shaft is greater than the number of all the elastic elements located on the upper side of the main shaft.
[0017] According to one aspect of the present invention, a groove is provided on the side of the end cover of the traction machine near the brake. The groove is a non-braking surface. Multiple elastic elements are provided in the groove, which can effectively separate the brake disc and the end cover when the traction machine is powered on, thereby avoiding wear on the end cover and noise caused by the brake disc rotating with the main shaft when the traction machine starts.
[0018] Furthermore, the presence of an elastic element in the groove avoids damage to the braking surface of the end cap, ensuring the integrity of the friction area while maintaining an effective friction surface. The groove also reduces weight. The fact that the area containing the elastic element avoids the braking surface also prevents friction debris from intruding into the elastic element or its mounting location, thus ensuring the long-term durability of the elastic element.
[0019] Furthermore, by detachably connecting the elastic element to the end cap, the number of elastic elements and the total preload can be adjusted as needed, increasing the flexibility of the separation mechanism.
[0020] Furthermore, selecting a ball-end spring plunger as the elastic element, with its ball end contacting the brake disc, reduces the contact area with the brake disc, minimizing wear and reducing noise. Additionally, the ball-end spring plunger has good straightness, ensuring the certainty of the movement direction.
[0021] Furthermore, by setting a chamfer or rounding at the connection between the sidewall of the groove and the braking surface, it is beneficial for the elastic element to be pushed out of the brake disc.
[0022] Furthermore, by setting the preload of all the lower elastic elements to be greater than that of all the upper elastic elements, the verticality of the brake disc can be maintained during the ejection of the brake disc when the brake disc is tilted, thereby better separating the brake disc and the end cover. Attached Figure Description
[0023] Figure 1 This is a cross-sectional view of the braking separation mechanism of a traction mechanism according to an embodiment of the present invention;
[0024] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;
[0025] Figure 3 This is a schematic diagram showing the distribution of the elastic elements of the traction mechanism braking separation mechanism at the end cap according to an embodiment of the present invention;
[0026] Figure label:
[0027] 10-Brake, 20-Brake assembly, 11-Brake disc, 21-End cover, 211-Brake surface, 212-Groove, 22-Elastic element, 31-Main shaft, 32-Base, 33-Rotor, 34-Stator, 35-Traction wheel, 101-Connection. Detailed Implementation
[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.
[0029] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.
[0030] Furthermore, to better illustrate this utility model, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this utility model can be implemented without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art have not been described in detail in order to highlight the spirit of this disclosure.
[0031] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article indicates that the preceding and following related objects have an "or" relationship.
[0032] In this embodiment of the invention, "multiple" refers to two or more. The descriptions of "first," "second," etc., appearing in this embodiment of the invention are for illustrative purposes and to distinguish the objects being described; they do not indicate any order and do not represent a specific limitation on the number of items in this embodiment of the invention, nor do they constitute any limitation on this embodiment of the invention.
[0033] Figure 1 This is a cross-sectional structural schematic diagram of the braking separation mechanism of a traction mechanism according to an embodiment of the present invention. Figure 1 As shown, in one embodiment, the traction machine's brake separation mechanism includes a brake 10 and a brake assembly 20 arranged sequentially. The brake assembly 20 includes an end cap 21 and multiple elastic elements 22. The end cap 21 is fixedly connected to the fixed part of the traction machine. In one embodiment, the fixed part is a base 32. The end cap 21 is connected to the base 32 by fasteners. The base 32 houses a main shaft 31, a rotor 33, and a stator 34. The base 32 and the end cap 21 together form the fixed support part of the traction machine. The stator 34 is fixed to the frame. The main shaft 31 is rotatably supported on the fixed support part. The rotor 33 and the main shaft 31 are configured to rotate synchronously, for example, by a spline connection. A traction sheave 35 is also connected to the main shaft 31.
[0034] The end cap 21 is provided with a brake surface 211 for fitting with the brake disc 11 and a groove 212 recessed in the brake surface 211, and a plurality of elastic elements 22 are provided in the groove 212.
[0035] The brake 10 includes a brake disc 11 and a drive unit. The brake disc 11 is configured to rotate synchronously with the main shaft 31 of the traction machine and can move axially along the main shaft 31. The drive unit is used to push the brake disc 11 toward the end cover 21, so that the brake disc 11 is in a braking position pressing against the end cover 21. The drive unit is also used to form a state of separation from the brake disc 11, so that the brake disc 11 is in a non-braking state. In one embodiment, the drive unit includes components such as a coil, an armature, and a brake spring. The brake spring is used to push the armature, and the armature pushes the brake disc 11, so that the brake disc 11 presses against the end cover 21. When the coil is energized, it generates an electromagnetic force that attracts the armature, and the armature separates from the brake disc 11. At this time, the brake spring is compressed. Of course, in other embodiments, the drive unit can also be other drive components used to achieve the above functions, which are not limited here.
[0036] When the brake disc 11 is in the braking position, the elastic element 22 is compressed to be flush with the brake surface 211 (that is, the pushing force of the drive unit on the brake disc 11 is greater than the preload of all the elastic elements 22), and when the brake disc 11 is in the non-braking state, it pushes the brake disc 11 to separate from the end cover 21. The groove 212 here can be a single integral groove or multiple separate grooves, which is not limited here.
[0037] In this embodiment, a groove 212 is provided on the side of the end cover 21 of the traction machine near the brake 10. The groove 212 is a non-braking surface. Multiple elastic elements 22 are provided in the groove 212, which can effectively separate the brake disc 11 and the end cover 21 when the traction machine is powered on, thereby avoiding wear on the end cover 21 and noise caused by the brake disc 11 rotating with the main shaft 31 when the traction machine is started.
[0038] Furthermore, the presence of an elastic element 22 at the groove 212 avoids damage to the braking surface 211 of the end cap 21, ensuring the integrity of the friction area and preserving an effective friction area. The groove 212 also reduces weight. The fact that the area containing the elastic element 22 avoids the braking surface 211 also prevents friction debris from entering the elastic element 22 or its mounting location, thus ensuring the long-term durability of the elastic element 22.
[0039] In one embodiment, the elastic element 22 and the end cap 21 are detachably connected. For example, the elastic element 22 is a ball-head spring plunger, with the side having the ball head close to the brake disc 11, and a threaded connection is formed between the elastic element 22 and the end cap 21. Specifically, a threaded hole can be formed at the bottom surface of the groove 212 of the end cap 21, and the outer peripheral surface of the ball-head spring plunger has an external thread that engages with the internal thread in the threaded hole. In other embodiments, the elastic element 22 can also be other radially expandable components, such as springs, rubber bodies, etc., which are not limited here. The detachable connection method is not limited to the above-mentioned threaded connection, but can also be snap-fit, riveting, etc., which are not limited here.
[0040] In this embodiment, the elastic element 22 is detachably connected to the end cap 21, thus allowing adjustment of the number of elastic elements 22 and the total preload as needed. For example, the end cap 21 has multiple threaded holes in its groove 212 for installing ball spring plungers. Initially, not all threaded holes are fitted with ball spring plungers. After a period of use, the preload of the ball spring plungers decreases. At this point, new ball spring plungers are installed in the threaded holes where no ball spring plungers were previously installed to ensure that the total preload of the elastic element 22 does not decrease.
[0041] Furthermore, in this embodiment, the elastic element 22 is selected as a ball-end spring plunger. By having the ball end contact the brake disc 11, the contact area with the brake disc 11 can be reduced, minimizing wear on the brake disc 11 and helping to reduce noise. In addition, the ball-end spring plunger has good straightness, thus ensuring the certainty of the direction of movement.
[0042] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle. (See image below.) Figure 2 As shown, in a further embodiment, the connection 101 between the sidewall of the groove 212 and the braking surface 211 is provided with a chamfer or rounding.
[0043] In this embodiment, by setting a chamfer or rounding at the connection 101 between the side wall of the groove and the braking surface 211, it is beneficial for the elastic element 22 to push out the brake disc 11.
[0044] In one embodiment, the elastic elements 22 are uniformly distributed circumferentially along the main shaft 31. That is, all the elastic elements 22 are uniformly distributed on the same circle within the groove, and the axis of the main shaft 31 passes through this circle.
[0045] In this embodiment, the elastic elements 22 are arranged to be evenly distributed along the circumference of the main shaft 31, which can ensure the uniformity of the thrust, thereby ensuring that the brake disc 11 is pushed out smoothly.
[0046] Figure 3 This is a schematic diagram showing the distribution of the elastic elements 22 of the traction mechanism braking separation mechanism at the end cap 21 according to one embodiment of the present invention. In another embodiment, the preload of all the elastic elements 22 located on the lower side of the main shaft 31 is greater than the preload of all the elastic elements 22 located on the upper side of the main shaft 31. For example... Figure 3 In the illustrated embodiment, the preload of each elastic element 22 is the same, and the number of all elastic elements 22 located on the lower side of the main shaft 31 is greater than the number of all elastic elements 22 located on the upper side of the main shaft 31. This achieves a scheme where the preload of all elastic elements 22 on the lower side is greater than the preload of all elastic elements 22 on the upper side. Of course, in other embodiments not shown, the non-uniform arrangement of preload on the upper and lower sides can also be achieved in other ways, for example, the preload of a single elastic element 22 on the lower side can be set to be greater than the preload of the elastic element 22 on the upper side.
[0047] Since the axis of the brake disc 11 is horizontally set, after it is mounted on the main shaft 31, due to its own weight and the increased gap between the brake disc 11 and the main shaft 31, the brake disc 11 is prone to slight tilting, meaning its lower end is closer to the end cover 21. In this embodiment, the preload of all the lower elastic elements 22 is set to be greater than the preload of all the upper elastic elements 22. This ensures the verticality of the brake disc 11 during the ejection process when the brake disc 11 tilts, thereby better separating the brake disc 11 and the end cover 21.
[0048] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A hoist brake release mechanism characterized by, The brake assembly comprises a brake and a brake assembly arranged in sequence; The brake assembly comprises an end cover and a plurality of elastic members, the end cover is fixedly connected with a fixed part of the traction machine, the end cover is provided with a brake surface for abutting with a brake disc and a groove recessed in the brake surface, and a plurality of elastic members are arranged in the groove; The brake comprises a brake disc and a driving part, the brake disc is arranged to rotate synchronously with a main shaft of the traction machine and is movable along the axial direction of the main shaft, the driving part is used to push the brake disc to move towards the end cover so that the brake disc is in a brake position in which the brake disc is pressed against the end cover, and the driving part is also used to form a state of separation from the brake disc so that the brake disc is in a non-braking state; The elastic members are compressed to be flush with the brake surface when the brake disc is in the brake position, and the elastic members push the brake disc to separate from the end cover when the brake disc is in the non-braking state.
2. The machine brake disengagement mechanism of claim 1, wherein, The elastic members and the end cover form detachable connection.
3. The machine brake disengagement mechanism of claim 1, wherein, The elastic members are ball head spring plungers, and one side of the ball head of each elastic member is close to the brake disc.
4. The machine brake disengagement mechanism of claim 3, wherein, The elastic members and the end cover form threaded connection.
5. The machine brake disconnect mechanism of claim 1, wherein, The connection between the side wall of the groove and the brake surface is provided with a chamfer or a fillet.
6. The machine brake disengagement mechanism according to any one of claims 1-5, wherein, The elastic members are uniformly distributed along the circumferential direction of the main shaft.
7. The machine brake disengagement mechanism according to any one of claims 1-5, wherein, The pre-tightening force of all the elastic members located on the lower side of the main shaft is greater than the pre-tightening force of all the elastic members located on the upper side of the main shaft.
8. The machine brake disengagement mechanism of claim 7, wherein, The pre-tightening force of each elastic member is the same, and the number of all the elastic members located on the lower side of the main shaft is greater than the number of all the elastic members located on the upper side of the main shaft.