Axial metal drum bag type brake structure

Abstract

The utility model provides an axial metal drum bag type brake structure which comprises a brake chamber and an annular brake unit arranged in the brake chamber, at least three independent elastic deformation units are distributed on the inner wall of the brake chamber, and expandable film layer structures are arranged in the elastic deformation units. During expansion, the periphery, the upper end face and the lower end face of the annular brake unit are extruded at the same time, axial space is fully utilized, uniform distribution and maximization of braking force are achieved, meanwhile, all the elastic deformation units are connected with the multi-channel gas circuit distributor, all the elastic deformation units are instantly driven through the multi-channel gas circuit distributor, explosive braking force is generated, and the braking effect is achieved. The extreme emergency braking requirement is met; the film layer structure is of a three-layer composite structure comprising an inner layer, a middle layer and an outer layer which are sequentially arranged from inside to outside, the braking effect is improved through the three-layer composite structure, further, a metal coating is arranged on the outer layer of the braking unit to optimize the friction characteristic, and the service life of the elastic deformation unit is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of braking of machine tool equipment, and more specifically, to an axial metal drum-bulging brake structure. Background Art

[0002] As an important part of machine tool equipment, the braking device directly affects the safety of equipment operation. With the progress of modern technology, the braking technology of machine tool equipment has been continuously developed. The braking device generates friction between the brake pads and the drum cavity or disc, and converts the kinetic energy during the rotation of the equipment into heat energy and consumes it during the friction process. The common braking devices are of two types: "drum brakes" and "disc brakes", and their basic features are as follows: In the drum brake, two semi-circular brake pads are installed inside the drum cavity, and the "lever principle" is used to push the brake pads to make the brake pads contact the inner surface of the drum cavity and generate friction. The operation mode of the drum brake: Simply put, the drum brake is a braking device that uses the stationary brake pads inside the brake drum to friction the brake drum rotating with the rotating shaft to generate frictional force to reduce the rotating speed of the rotating shaft. The disc brake is a braking device that uses the stationary brake disc to clamp the brake disc rotating with the rotating shaft to generate frictional force to reduce the rotating speed of the equipment.

[0003] The patent publication number closest to the present application is CN107289042A, a rapid braking internal expansion brake structure, which discloses a brake disc and a wheel shaft coaxially aligned with the brake disc. An elastic bushing is sleeved on the wheel shaft. A plurality of inflatable braking mechanisms are arranged between the brake disc and the bushing. The inflatable braking mechanism includes an inflatable brake block and a locking key supporting the inflatable brake block. One end of the inflatable brake block is fixedly arranged on the inner wall of the brake disc through the locking key, and the other end is connected to the bushing. During braking, the inflatable brake block inflates and expands to abut against the wheel shaft and the brake disc.

[0004] This solution relies on chemical substance reactions to supply gas, has risks of uncontrollable reactions and material fatigue aging, and lacks a dynamic pressure regulation mechanism.

[0005] Therefore, there is an urgent need to develop a new type of brake structure that can provide a large, stable and instantaneously explosive braking force in a compact axial space, and at the same time has wear resistance, environmental adaptability and multiple safety protection mechanisms. Content of the Utility Model

[0006] In view of this, in order to solve the above problems, the utility model proposes an axial metal drum-bulging brake structure that is drum-bulging and has controllable reactions.

[0007] An axial metal drum-bulging brake structure, characterized in that: the brake structure 5 includes a braking chamber 1 and an annular braking unit 2 arranged in the braking chamber 1.

[0008] At least three independent elastic deformation units 3 are distributed on the inner wall of the braking chamber 1;

[0009] Each elastic deformation unit 3 is connected to a multi-channel air distributor 4;

[0010] The elastic deformation unit 3 has an expandable membrane structure 31 built in, which simultaneously compresses the outer periphery and upper and lower end faces of the annular braking unit 2 when it expands.

[0011] In some embodiments, the multi-channel gas distributor 4 is connected to a gas source device, which includes a high-pressure gas source and a micro-explosion container 6 connected in parallel; the output end of the micro-explosion container 6 is provided with a rupture diaphragm 61.

[0012] Furthermore, the membrane structure 31 is a three-layer composite structure including an inner layer, a middle layer, and an outer layer arranged sequentially from the inside out. The inner layer is a pre-compressed shape memory alloy mesh, wherein the phase transformation temperature is ≤80℃. When the phase transformation is triggered by high temperature during braking friction, it can actively restore the preset shape, compensate for wear gaps, maintain constant pressure, and effectively suppress plastic deformation caused by high temperature creep, significantly improving stability and lifespan under high temperature conditions.

[0013] The middle layer is an elastic matrix with embedded spiral reinforcing filaments. The middle layer provides excellent radial expansion capacity and elastic recovery force, while the spiral reinforcing filaments greatly improve the membrane's pressure resistance and tear resistance, preventing failure under high pressure / impact.

[0014] The outer layer is a composite wear-resistant layer, which is in direct contact with the braking unit and has extremely high hardness, wear resistance and thermal stability, effectively reducing friction loss.

[0015] In some embodiments, the elastic deformation unit 3 is provided with a gas containment cavity 11, which helps to ensure gas stability.

[0016] In some embodiments, the surface of the annular braking unit 2 is further provided with a metal coating, which further enhances the wear resistance, high temperature resistance and anti-galling performance of the friction interface.

[0017] In some embodiments, the branch pipes 42 of the multi-channel air distributor 4 integrate piezoelectric micro-flow sensors. The piezoelectric micro-flow sensors can monitor and control the intake flow and pressure of each elastic deformation unit in real time, ensuring the balance and controllability of the braking force.

[0018] In some embodiments, the main pipeline 41 is equipped with a mechanical temperature control valve with a valve core filled with paraffin. When the system temperature rises abnormally (such as continuous braking overheating), the paraffin expands and drives the valve core to automatically cut off or limit the gas supply input, preventing overheating failure and providing passive overheat protection.

[0019] In some embodiments, the micro-explosive container 6 is connected to the main pipe 41 via an explosion-proof connector.

[0020] Furthermore, the explosion-proof connector also contains a metal filter with a screen diameter of ≤0.1mm. The metal filter effectively intercepts any tiny fragments or impurities generated by the micro-explosion that may damage downstream pipes or elastic units, ensuring the safe operation of the system after extreme operating conditions.

[0021] In some embodiments, the thickness of the annular braking unit 2 is 25-46 mm; the central angle of the gas accommodating chamber 11 in each elastic deformation unit 3 is 30°-60°; while ensuring structural strength and heat dissipation capacity, the best force transmission efficiency and space utilization are achieved.

[0022] The beneficial effects of this utility model are as follows: This utility model proposes an axial metal drum-type brake structure, including a brake chamber 1 and an annular brake unit 2 disposed within the brake chamber 1. At least three independent elastic deformation units 3 are distributed on the inner wall of the brake chamber 1. Each elastic deformation unit 3 has an expandable membrane structure 31 inside. When it expands, it simultaneously compresses the outer periphery and upper and lower end faces of the annular brake unit 2, making full use of the axial space to achieve uniform distribution and maximization of braking force. At the same time, each elastic deformation unit 3 is connected to a multi-channel air distribution device 4. The multi-channel air distribution device instantly drives all elastic deformation units to generate explosive braking force to meet extreme emergency braking requirements. The membrane structure 31 is a three-layer composite structure, including an inner layer, a middle layer, and an outer layer arranged sequentially from the inside out. The three-layer composite structure improves the braking effect. Furthermore, a metal coating is set on the outer layer of the brake unit 2 to optimize friction characteristics and further improve the lifespan of the elastic deformation unit 3. Attached Figure Description

[0023] Figure 1 This is a perspective view of the axial metal drum brake structure of this utility model.

[0024] Figure 2 This is a top view of the axial metal drum brake structure of this utility model.

[0025] Figure 3 This is a cross-sectional view of the axial metal drum brake structure of this utility model.

[0026] Figure 4 This is a partially enlarged cross-sectional view of the axial metal drum brake structure of this utility model.

[0027] Explanation of main component symbols

[0028] Braking chamber 1, gas containment chamber 11, braking unit 2, elastic deformation unit 3, membrane structure 31, multi-channel gas distributor 4, main pipe 41, branch pipe 42, braking structure 5, micro-explosion container 6.

[0029] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0030] Example 1: As Figure 1 The image shown is a perspective view of the axial metal drum-type brake structure of this utility model; as shown... Figure 2 The image shown is a top view of the axial metal drum-type brake structure of this utility model; as shown... Figure 3 The image shown is a cross-sectional view of the axial metal drum-type brake structure of this utility model (JJ section). Figure 4 The image shown is a partially enlarged cross-sectional view of the axial metal drum brake structure of this utility model.

[0031] An axial metal drum-type brake structure, characterized in that: the brake structure 5 includes a brake chamber 1 and an annular brake unit 2 disposed within the brake chamber 1.

[0032] At least three independent elastic deformation units 3 are distributed circumferentially on the inner wall of the braking chamber 1;

[0033] Each elastic deformation unit 3 is connected to a multi-channel air distributor 4;

[0034] The elastic deformation unit 3 has a built-in radially expandable membrane structure 31, which simultaneously compresses the outer periphery and upper and lower end faces of the annular braking unit 2 when it expands.

[0035] In some embodiments, the multi-channel gas distributor 4 is connected to a gas source device, which includes a high-pressure gas source and a micro-explosion container 6 connected in parallel; the output end of the micro-explosion container 6 is provided with a rupture diaphragm 61.

[0036] The membrane structure 31 is a three-layer composite structure including an inner layer, a middle layer, and an outer layer arranged sequentially from the inside out. The inner layer is a pre-compressed shape memory alloy mesh with a phase transformation temperature ≤80℃. When the phase transformation is triggered by high temperature during braking friction, it can actively restore the preset shape, compensate for wear gaps, maintain constant pressure, and effectively suppress plastic deformation caused by high temperature creep, significantly improving stability and lifespan under high temperature conditions.

[0037] The middle layer is an elastic matrix with embedded spiral reinforcing filaments. The middle layer provides excellent radial expansion capacity and elastic recovery force, while the spiral reinforcing filaments greatly improve the membrane's pressure resistance and tear resistance, preventing failure under high pressure / impact.

[0038] The outer layer is a composite wear-resistant layer, which is in direct contact with the braking unit and has extremely high hardness, wear resistance and thermal stability, effectively reducing friction loss.

[0039] The elastic deformation unit 3 is provided with a gas containment cavity 11, which helps to ensure gas stability.

[0040] The surface of the annular braking unit 2 is also provided with a metal coating, which further enhances the wear resistance, high temperature resistance and anti-galling performance of the friction interface.

[0041] The branch pipe 42 of the multi-channel air distributor 4 integrates a piezoelectric micro-flow sensor. The piezoelectric micro-flow sensor can monitor and control the intake flow and pressure of each elastic deformation unit in real time, ensuring the balance and controllability of the braking force.

[0042] The main pipeline 41 is equipped with a mechanical temperature control valve with a valve core filled with paraffin. When the system temperature rises abnormally (such as continuous braking overheating), the paraffin expands and drives the valve core to automatically cut off or limit the gas supply input, preventing overheating failure and providing passive overheat protection.

[0043] The micro-explosive container 6 is connected to the main pipeline 41 via an explosion-proof connector.

[0044] The explosion-proof connector also contains a metal filter with a screen diameter of ≤0.1mm. The metal filter effectively intercepts any tiny fragments or impurities generated by the micro-explosion that may damage downstream pipes or elastic units, ensuring the safe operation of the system after extreme operating conditions.

[0045] The thickness of the annular braking unit 2 is 25-46mm; the central angle of the gas accommodating cavity 11 in each elastic deformation unit 3 is 30°-60°; while ensuring structural strength and heat dissipation capacity, the best force transmission efficiency and space utilization are achieved.

[0046] The beneficial effects of this utility model are as follows: This utility model proposes an axial metal drum-type brake structure, including a brake chamber 1 and an annular brake unit 2 disposed within the brake chamber 1. At least three independent elastic deformation units 3 are distributed on the inner wall of the brake chamber 1. Each elastic deformation unit 3 has an expandable membrane structure 31 inside. When it expands, it simultaneously compresses the outer periphery and upper and lower end faces of the annular brake unit 2, making full use of the axial space to achieve uniform distribution and maximization of braking force. At the same time, each elastic deformation unit 3 is connected to a multi-channel air distribution device 4. The multi-channel air distribution device instantly drives all elastic deformation units to generate explosive braking force to meet extreme emergency braking requirements. The membrane structure 31 is a three-layer composite structure, including an inner layer, a middle layer, and an outer layer arranged sequentially from the inside out. The three-layer composite structure improves the braking effect. Furthermore, a metal coating is set on the outer layer of the brake unit 2 to optimize friction characteristics and further improve the lifespan of the elastic deformation unit 3.

[0047] 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 this 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. An axial metal drum bag brake structure, characterized by: The braking structure (5) includes a braking chamber (1) and an annular braking unit (2) disposed in the braking chamber (1). The inner wall of the braking chamber (1) is distributed with at least three independent elastic deformation units (3); Each elastic deformation unit (3) is connected to a multi-channel air distribution unit (4); The elastic deformation unit (3) has a built-in radially expandable membrane structure (31), which simultaneously compresses the outer periphery and upper and lower end faces of the annular braking unit (2) when it expands.

2. The axial metal drum-type brake structure as described in claim 1, characterized in that: The multi-channel gas distributor (4) is connected to a gas source device, which includes a high-pressure gas source and a micro-explosion container (6) connected in parallel; the output end of the micro-explosion container (6) is provided with a rupture diaphragm (61).

3. The axial metal drum brake structure as described in claim 1, characterized in that: The membrane structure (31) is a three-layer composite structure including an inner layer, a middle layer and an outer layer arranged sequentially from the inside out. The inner layer is a pre-compressed shape memory alloy mesh, the middle layer is an elastic matrix with embedded spiral reinforcing wires, and the outer layer is a composite wear-resistant layer.

4. The axial metal drum-type brake structure as described in claim 1, characterized in that: The elastic deformation unit (3) is provided with a gas accommodating cavity (11), which helps to ensure gas stability.

5. The axial metal drum brake structure as described in claim 1, characterized in that: The surface of the annular braking unit (2) is also provided with a metal coating.

6. The axial metal drum brake structure as described in claim 1, characterized in that: The branch pipes (42) of the multi-channel gas distributor (4) integrate piezoelectric micro-flow sensors.

7. The axial metal drum-type brake structure as described in claim 1, characterized in that: The main pipeline (41) of the multi-channel gas distributor is equipped with a mechanical temperature control valve with the valve core filled with paraffin.

8. The axial metal drum brake structure as described in claim 2, characterized in that: The micro-explosive container (6) is connected to the main pipeline (41) via an explosion-proof connector.

9. The axial metal drum brake structure as described in claim 8, characterized in that: The explosion-proof connector also contains a metal filter screen with a mesh diameter of ≤0.1mm.

10. The axial metal drum-type brake structure as described in claim 1, characterized in that: The thickness of the annular braking unit (2) is 25-46mm; the central angle of the gas accommodating cavity (11) in each elastic deformation unit (3) is 30°-60°.

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