Clutch brake structure

Abstract

The utility model relates to the technical field of brakes, in particular to a clutch brake structure which solves the problems that in the prior art, a brake pad is driven to work only by a single driving device, once a driving structure breaks down, overall braking fails, and large potential safety hazards exist. The structure comprises a hub, a mounting frame, a connecting support, a first bidirectional pushing air cylinder, a second bidirectional pushing air cylinder, a first brake pad, a second brake pad, a rotating shaft, a tension spring, a traction rope, a mounting plate and a connecting part, the brake pads are driven by the two independent air cylinders to achieve staged braking, and an elastic reset and limiting device is arranged on the structure. And the braking stability and the automatic resetting capability are ensured. According to the utility model, a two-way independent driving mechanism is adopted, the problem of braking failure caused by failure of a single driving source is avoided, the redundancy and the safety of the system are improved, meanwhile, progressive braking is realized, and the operation stability and the reliability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of brake, especially a clutch brake structure. BACKGROUND

[0002] The clutch brake is a key component for realizing power transmission and cut-off, vehicle deceleration and parking control in agricultural equipment, and is widely used in agricultural machinery such as tractors and harvesters. The performance of the clutch brake directly affects the operation stability, braking response speed and driving safety of the whole machine. In actual operation, the clutch brake not only needs to have fast and sensitive braking response capability, but also needs to ensure durability and reliability under frequent use conditions. Therefore, the rationality of the design of the braking structure is particularly important.

[0003] Although the existing clutch brake structure for agricultural machinery (as disclosed in the utility model patent CN 212839044 U) realizes two-stage braking function, by setting the first brake pad and the second brake pad, the two brake pads are sequentially in contact with the axle under the action of the hydraulic drive tank to brake in stages, thereby improving the braking stability and prolonging the service life of the brake pad to a certain extent. However, this structure only relies on a single hydraulic drive device to drive the two brake pads to work together. Once the driving structure fails or is damaged, both brake pads will fail at the same time, and the basic braking function cannot be realized, which poses a great safety hazard.

[0004] Therefore, in view of the deficiencies in the prior art, there is an urgent need for a clutch brake structure to solve this problem. This structure should be able to retain the advantages of two-stage braking while introducing independent or multi-path driving mechanisms to improve the redundancy and safety of the braking system, ensuring that the basic braking function can be maintained when some components fail, while better meeting the production and use requirements of modern agricultural equipment for high safety, high reliability and intelligent control, and providing strong support for the safe development and technological progress of the agricultural machinery industry. SUMMARY

[0005] The utility model aims at providing a clutch brake structure, which solves the problem that in the prior art, only a single hydraulic drive device is used to drive two brake pads to work together. Once the driving structure fails or is damaged, both brake pads will fail at the same time, and the basic braking function cannot be realized, which poses a great safety hazard.

[0006] To achieve the above-mentioned purpose, the utility model provides a clutch brake structure, a hub, a mounting bracket connected to one side of the inside of the hub, and a connecting bracket connected to the other side of the inside of the hub.

[0007] One side of the connecting support is connected with a bidirectional push cylinder one, and the other side is connected with a bidirectional push cylinder two, one side of the mounting frame is symmetrically provided with two brake pads one, and the other side is symmetrically provided with two brake pads two;

[0008] The two brake pads one are rotationally connected with the mounting frame on the side close to each other, and the other side close to each other is matched with the two output ends of the bidirectional push cylinder two respectively;

[0009] The two brake pads two are rotationally connected with the mounting frame on the side close to each other, and the other side close to each other is matched with the two output ends of the bidirectional push cylinder one respectively.

[0010] The two brake pads one and the two brake pads two are connected with the elastic tension structure.

[0011] One side of the mounting frame is fixedly connected with a mounting plate, and the mounting plate is fixedly connected with the inner wall of the hub by bolts.

[0012] Both sides of the mounting frame are symmetrically provided with two rotating shafts, one end of the rotating shaft is connected with the mounting frame, and the other end is rotationally connected with the brake pad one or the brake pad two.

[0013] The elastic tension structure comprises a tension spring, and the side close to each other of the two brake pads one and the two brake pads two is connected with the end of the tension spring.

[0014] The connecting support comprises a fixed rod and two mounting sleeves fixedly connected at both ends of the fixed rod, and the bidirectional push cylinder one and the bidirectional push cylinder two are connected in the interiors of the two mounting sleeves.

[0015] One side of the two brake pads one is connected with a pulling rope, and one end of the pulling rope is connected with the side wall of the mounting sleeve.

[0016] The clutch brake structure adopts a two-section brake mode, realizes a gradual braking process from light to heavy through the phased action of the brake pad one and the brake pad two, effectively improves the stability and controllability of braking, reduces the mechanical impact caused by sudden braking, and prolongs the service life of the components. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced.

[0018] Figure 1 It is the whole structure schematic view of the embodiment of the utility model.

[0019] Figure 2 It is the structure schematic view of the wheel hub and the mounting bracket of the embodiment of the utility model.

[0020] Figure 3 It is the structure schematic view of the brake pad one and the brake pad two of the embodiment of the utility model.

[0021] Figure 4 It is the structure schematic view of the mounting bracket and the rotating shaft of the embodiment of the utility model.

[0022] Figure 5 It is the structure schematic view of the fixed rod and the mounting sleeve of the embodiment of the utility model.

[0023] In the drawing: 1, wheel hub; 2, mounting bracket; 3, brake pad one; 4, brake pad two; 5, tension spring; 6, two-way push cylinder one; 7, two-way push cylinder two; 8, rotating shaft; 9, mounting plate; 10, pull rope; 11, fixed rod; 12, mounting sleeve. DETAILED DESCRIPTION

[0024] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, the embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and can not be understood as the limitation of the utility model. Embodiment one

[0025] Please refer to Figures 1-5 The clutch brake structure of the embodiment includes wheel hub 1, mounting bracket 2 connected to one side inside wheel hub 1 and connecting support connected to the other side inside wheel hub 1.

[0026] One side of connecting support is connected with two-way push cylinder one 6, the other side is connected with two-way push cylinder two 7, one side of mounting bracket 2 is symmetrically provided with two brake pad ones 3, and the other side is symmetrically provided with two brake pad twos 4.

[0027] The side of two brake pad ones 3 close to each other is rotatably connected with mounting bracket 2, and the other side close to each other is matched with two output ends of two-way push cylinder two 7 respectively.

[0028] The side of two brake pad twos 4 close to each other is rotatably connected with mounting bracket 2, and the other side close to each other is matched with two output ends of two-way push cylinder one 6 respectively.

[0029] The elastic tension structure is connected between two brake pad ones 3 and two brake pad twos 4.

[0030] When the operator starts the brake control, the control system first triggers the bidirectional push cylinder two 7, the two output ends of which are connected with the two brake pads one 3 respectively, and moves the brake pads one 3 to the inner wall of the hub 1 through the action of the cylinder, but because the design adopts a non-full contact mode, that is, the brake pads only partially fit the inner wall of the hub, thereby realizing the preliminary deceleration and soft braking effect; after the end of this stage, the system further triggers the bidirectional push cylinder one 6, the two output ends of which are connected with the brake pads two 4, at this time the brake pads two 4 are fully close to the inner wall of the hub 1 and tightly contact under the action of the cylinder, forming a larger friction torque, thereby realizing complete braking. In this process, the two brake pads one 3 and the two brake pads two 4 are connected through the elastic tension structure, and can automatically recover to the initial position by relying on the elastic force after the cylinder resets, ensuring the smooth execution of the next braking action. In addition, since the bidirectional push cylinder one 6 and the bidirectional push cylinder two 7 are independent driving components, even if one of the pneumatic systems fails, the other can still maintain the basic braking function, thereby ensuring the safety of the equipment operation. Embodiment two

[0031] Please refer to Figures 1-5 As shown in the figure, the mounting frame 2 of the clutch brake structure of the embodiment is fixedly connected with a mounting plate 9 on one side, and the mounting plate 9 is bolted and fixedly connected with the inner wall of the hub 1. Specifically, the mounting plate 9 is bolted and fixedly connected with the inner wall of the hub 1, so that the mounting frame 2 can be stably installed inside the hub. Such a setting not only improves the structural stability of the entire braking system, but also simplifies the installation and maintenance process, ensuring the reliability of the brake in long-term use.

[0032] The elastic tension structure includes a tension spring 5, and the side close to each other of the two brake pads one 3 and the two brake pads two 4 is connected with the end of the tension spring 5. Specifically, the two ends of the tension spring 5 are connected with the side close to each other of the two brake pads one 3 and the two brake pads two 4 respectively, and when the bidirectional push cylinder resets, the tension spring can automatically pull the brake pads back to the initial position. Such a setting not only simplifies the reset mechanism and reduces the demand for additional power sources, but also improves the response speed and operation convenience of the equipment, ensuring the smooth execution of each braking action. Embodiment three

[0033] Please refer to Figures 1-5As shown, the clutch brake structure of the embodiment is provided with two rotating shafts 8 on both sides of the mounting frame 2, one end of the rotating shaft 8 is connected with the mounting frame 2, and the other end is rotatably connected with the brake pad one 3 or the brake pad two 4. Specifically, one end of the rotating shaft 8 is connected with the mounting frame 2, and the other end is rotatably connected with the brake pad one 3 or the brake pad two 4, so as to realize flexible rotation of the brake pad. Such arrangement allows the brake pad to be accurately adjusted in angle according to the action of the bidirectional push cylinder, ensures uniform distribution of pressure when the brake pad contacts the inner wall of the hub 1, thereby improving the braking effect while reducing wear and tear, prolonging the service life of the brake pad.

[0034] The connecting bracket comprises a fixed rod 11 and two mounting sleeves 12 fixedly connected at both ends of the fixed rod 11, and the bidirectional push cylinder one 6 and the bidirectional push cylinder two 7 are connected inside the two mounting sleeves 12. Specifically, the bidirectional push cylinder one 6 and the bidirectional push cylinder two 7 are fixedly connected through the mounting sleeves 12 at both ends of the fixed rod 11, thereby enhancing the stability and positioning accuracy of the cylinder. Such arrangement effectively avoids the possible deviation or shaking of the cylinder during operation, improves the stability and consistency of the braking process, and facilitates the assembly and maintenance of the equipment.

[0035] One side of each of the two brake pad one 3 is connected with a pull rope 10, one end of the pull rope 10 is connected with the side wall of the mounting sleeve 12, and the other end is connected with the brake pad one 3. Specifically, the rotating range of the brake pad one 3 is limited by connecting one end of the pull rope 10 with the side wall of the mounting sleeve 12 and connecting the other end with the brake pad one 3. Such arrangement allows the brake pad one 3 to slow down when contacting the inner wall of the hub 1, and the two brake pad two 4 will not be fully braked until they contact the inner wall of the hub 1. This design not only improves the progressiveness and controllability of the braking process, but also effectively prevents mechanical impact caused by sudden braking, improves the operation stability and driving safety of the vehicle. At the same time, this method further enhances the system redundancy, so that even if one cylinder fails, the other can still maintain basic braking function, ensuring the safety of the equipment operation.

[0036] The scheme has the following working process:

[0037] When the operator starts the brake control, the control system first triggers the bidirectional push cylinder two 7, the two output ends of which are connected with the two brake pads one 3 respectively, and through the action of the cylinder, the brake pads one 3 are moved to the inner wall of the hub 1; at the same time, the mounting plate 9 is arranged on one side of the mounting frame 2, which is fixed on the inner wall of the hub 1 by bolts, so as to stably fix the whole mounting frame in the hub and provide a stable support basis for the subsequent braking process; the side of the brake pads one 3 close to each other is rotatably connected with the mounting frame 2 through the rotating shaft 8, and the other side is driven by the bidirectional push cylinder two 7, so that it can rotate flexibly and adhere to the inner wall of the hub; since one end of the pull rope 10 is connected to the side wall of the mounting sleeve 12 and the other end is connected with the brake pads one 3, the pull rope limits the rotation angle of the brake pads one 3, so that it only realizes partial contact, forming a preliminary speed reduction and soft braking effect; then, the system further triggers the bidirectional push cylinder one 6, the two output ends of which are connected with the two brake pads two 4 respectively, the brake pads two 4 are also rotatably connected with the mounting frame 2 through the rotating shaft 8, and under the driving of the cylinder, they fully close to the inner wall of the hub 1 and tightly contact, forming a large friction torque, so as to realize complete braking; the bidirectional push cylinder one 6 and the bidirectional push cylinder two 7 are fixedly connected at both ends of the connecting bracket, which is composed of the fixed rod 11 and the mounting sleeve 12, the mounting sleeve 12 enhances the positioning accuracy and running stability of the cylinder, avoiding the deviation or shaking of the cylinder during work; after completing the braking, the bidirectional push cylinder resets, at this time, the tension spring 5 connected between the two brake pads one 3 and the two brake pads two 4 plays a role, the two ends of the spring are connected with the corresponding brake pads, and the brake pads are automatically pulled back to the initial position by the elastic tension of the spring, ensuring the smooth execution of the next braking action.

[0038] The beneficial effects brought by the clutch brake structure are reflected in many aspects: first, the bidirectional push cylinder one 6 and the bidirectional push cylinder two 7 are used as independent driving sources, realizing two-stage braking mode, that is, slow braking is first performed by the brake pad one 3, and then complete braking is performed by the brake pad two 4, which not only improves the stability and controllability of braking, but also effectively reduces the mechanical impact caused by sudden braking, prolonging the service life of the components; second, the mounting plate 9 is fixedly connected with the inner wall of the wheel hub 1 through bolts, so that the mounting frame 2 can be stably installed inside the wheel hub, improving the structural stability and long-term reliability of the entire braking system; third, the design of the rotating shaft 8 allows the brake pad to be accurately adjusted in angle according to the action of the cylinder, ensuring uniform distribution of pressure when the brake pad contacts the inner wall of the wheel hub 1, improving the braking effect while reducing wear; in addition, the presence of the tension spring 5 simplifies the reset mechanism, and the brake pad can be automatically reset without an additional power source, improving the response speed and operation convenience of the equipment; at the same time, the fixed rod 11 and the mounting sleeve 12 in the connecting bracket enhance the installation stability and operation consistency of the cylinder, improve the overall performance of the braking process, and facilitate assembly and maintenance; the setting of the pull rope 10 limits the rotation range of the brake pad one 3, ensuring that it does not produce excessive braking torque in the preliminary braking stage, thereby preventing mechanical impact, improving the operation stability and driving safety of the entire vehicle; most importantly, the bidirectional push cylinder one 6 and the bidirectional push cylinder two 7 are independent driving systems, so even if one of the pneumatic systems fails, the other can still maintain basic braking function, greatly enhancing the redundancy and safety of the system, meeting the demand for high reliability and high safety braking devices of modern agricultural machinery.

[0039] The above disclosure is only one or more preferred embodiments of the present application, and cannot limit the scope of the rights of the present application. Those skilled in the art can understand that all or part of the above-mentioned embodiments can be implemented, and equivalent changes made in accordance with the claims of the present application still fall within the scope covered by the present application.

Claims

1. A clutch brake structure, characterized in that, include: The wheel hub, the mounting bracket connected to one side of the inside of the wheel hub, and the connecting bracket connected to the other side of the inside of the wheel hub; One side of the connecting bracket is connected to a bidirectional pushing cylinder 1, and the other side is connected to a bidirectional pushing cylinder 2. Two brake pads 1 are symmetrically arranged on one side of the mounting bracket, and two brake pads 2 are symmetrically arranged on the other side. The two brake pads are rotatably connected to the mounting bracket on their adjacent sides, and respectively connected to the two output ends of the bidirectional push cylinder. The two brake pads are rotatably connected to the mounting bracket on their adjacent sides, and respectively connected to the two output ends of the bidirectional push cylinder. An elastic tension structure is connected between the two brake pads and between the two brake pads.

2. The clutch brake structure according to claim 1, characterized in that, A mounting plate is fixedly connected to one side of the mounting bracket, and the mounting plate is bolted to the inner wall of the wheel hub.

3. The clutch brake structure according to claim 1, characterized in that, Two rotating shafts are symmetrically arranged on both sides of the mounting bracket. One end of the rotating shaft is connected to the mounting bracket, and the other end is rotatably connected to brake pad one or brake pad two.

4. The clutch brake structure according to claim 2, characterized in that, The elastic tension structure includes a tension spring, and the sides of the two brake pads one and the two brake pads two that are close to each other are connected to the end of the tension spring.

5. A clutch brake structure according to claim 3, characterized in that, The connecting bracket includes a fixed rod and two mounting sleeves that are respectively fixedly connected to both ends of the fixed rod. The first bidirectional push cylinder and the second bidirectional push cylinder are respectively connected inside the two mounting sleeves.

6. A clutch brake structure according to claim 5, characterized in that, Each of the two brake pads is connected to a pull rope on one side, and one end of the pull rope is connected to the side wall of the mounting sleeve.

Images