A brake assembly running-in device for simulating skid testing

Abstract

The present application discloses a running-in brake assembly device for simulating a test skid, which relates to the field of brake simulation technology, including a test rail, a rotating drive, a test brake disc and a test brake pad, wherein a brake pad fixing member is fixedly provided at one end of the test rail, the test brake pad is fixed to the brake pad fixing member, the rotating drive member is configured to slide along the test rail, the test brake disc is driven by the rotating drive member to rotate and moves with the rotating drive member to achieve contact and separation with the test brake pad. The present application is used to replace the current real aircraft test skid running-in process, save manpower and material resources for flight training, reduce aircraft parking time, improve aircraft utilization, and fundamentally reduce various risks brought about by test skids.

Description

Technical Field

[0001] The present application relates to the technical field of brake simulation, and in particular to a running-in brake assembly device for simulating a trial skid. Background Art

[0002] In order to further improve the reliability and braking efficiency of the aircraft's brake system, the SR20G3 aircraft maintenance manual has clear requirements for the test run after replacing the brake pads and brake discs of the brake system. The test run requires the pilot to drive the real aircraft to perform taxiing, braking and other operations according to the work procedures, which has certain risks. Summary of the invention

[0003] The main purpose of the present application is to provide a brake assembly running-in device for simulating a test slide, which is intended to replace the current real aircraft test slide running-in process, save manpower and material resources for flight training, reduce aircraft downtime, improve aircraft utilization, and fundamentally reduce various risks brought about by the test slide.

[0004] The technical solutions adopted in this application are as follows:

[0005] A brake assembly running-in device for simulating a test skid comprises a test guide rail, a rotating drive member, a test brake disc and a test brake pad, wherein a brake pad fixing member is fixedly provided at one end of the test guide rail, the test brake pad is fixed to the brake pad fixing member, the rotating drive member is configured to slide along the test guide rail, the test brake disc is driven to rotate by the rotating drive member and moves with the rotating drive member to achieve contact and separation with the test brake pad.

[0006] Optionally, a sleeper is arranged axially centered on the test rail, and the brake pad fixing piece is fixedly arranged across the sleeper.

[0007] Optionally, the brake fixing member includes:

[0008] A base, the base being fixed to the sleeper;

[0009] A tailstock, the tailstock being fixed to the base, the tailstock being provided with an axial hole in the same direction as the test guide rail, and a shaft rod being provided in the axial hole;

[0010] A fixed flange is fixed to one end of the shaft facing the rotary drive member, and the test brake pad is fixed to the fixed flange.

[0011] Optionally, the fixing flange is provided with a plurality of fixing bolts, and the brake pad is provided with connecting bolt holes matching the fixing bolts.

[0012] Optionally, the fixed flange has a plurality of the test brake pads, and the plurality of the test brake pads are circumferentially arrayed on the fixed flange.

[0013] Optionally, the rotating drive component includes a movable shell and a rotating motor, the movable shell is movably disposed on the sleeper, a screw shaft in the same direction as the test guide rail is disposed on one side of the sleeper, the movable shell is threadedly connected to the screw shaft, the rotating motor is disposed in the shell, and the test brake disc is fixed to the output end of the rotating motor.

[0014] Optionally, a rotating handle is provided at one end of the screw shaft close to the brake pad fixing piece.

[0015] Optionally, a start / stop button and an emergency stop button for controlling the start / stop of the rotating motor are provided on the movable housing.

[0016] Optionally, the mobile housing is also provided with a speed adjustment knob for adjusting the speed of the rotating motor and a speed display screen for displaying the speed.

[0017] Optionally, a protective cover is further provided on one side of the movable housing located on the test brake pad.

[0018] Compared with the prior art, the beneficial effects of this application are:

[0019] A running-in brake assembly device for simulating a test skid is proposed in an embodiment of the present application. A rotating drive member with controllable speed is connected and fixed to a disassembled aircraft brake disc to replace the current real aircraft test skid running-in process. The initial linear velocity of the aircraft sliding on the ground is converted into the angular velocity of the rotating drive member driving the brake disc to rotate by an equivalent calculation method, thereby calculating the initial rotation speed of the rotating drive member. Then, an appropriate friction force is applied to the fixed brake pad by electromagnetic or mechanical means to make the brake pad and the brake disc fully contact and run-in. The rotation speed of the rotating drive member is reduced to the required running-in speed by friction. The running-in is continued for a certain period of time. After the brake assembly after the running-in is cooled according to the prescribed time, a visual inspection shows that there are no obvious physical defects, indicating that the test skid experiment is completed, thereby saving a lot of manpower and aviation material costs, reducing aircraft parking time, effectively improving aircraft utilization, and fundamentally reducing various risks brought about by the test skid. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a running-in brake assembly device for simulating a skid test provided in an embodiment of the present application at one viewing angle.

[0021] Description of the reference numerals in the accompanying drawings:

[0022] 1-test guide rail, 2-tail stock, 3-shaft rod, 4-fixed flange, 5-test brake pad, 6-screw shaft, 7-moving housing, 8-speed adjustment knob, 9-speed display screen, 10-start and stop button, 11-emergency stop button, 12-test brake disc, 13-protective cover. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0027] Refer to the attached Figure 1An embodiment of the present application provides a running-in brake assembly device for simulating a test slip, comprising a test guide rail 1, a rotating drive component, a test brake disc 12 and a test brake pad 5, wherein a brake pad fixing component is fixedly provided at one end of the test guide rail 1, the test brake pad 5 is fixed to the brake pad fixing component, the rotating drive component is configured to slide along the test guide rail 1, the test brake disc 12 is driven by the rotating drive component to rotate and moves with the rotating drive component to achieve contact and separation with the test brake pad 5.

[0028] A running-in brake assembly device for simulating trial skidding provided in an embodiment of the present application, as an equivalent alternative device for running-in of aircraft wheel brake systems, provides feasibility for solving the risks and difficulties brought about by the running-in of brake assemblies of various types of aircraft during ground taxiing. By connecting and fixing a rotating drive member with controllable speed to a disassembled aircraft brake disc, the initial linear velocity of the aircraft taxiing on the ground is converted into the angular velocity of the brake disc driven by the rotating drive member through an equivalent calculation method, thereby calculating the initial rotation speed of the rotating drive member; then, the brake pad is fixed to the brake fixing member by electromagnetic or mechanical means, and appropriate friction force is applied to the brake pad, and the rotating drive member is moved to make the brake pad and the brake disc fully contact and run-in, and the rotation speed of the rotating drive member is reduced to the required running-in speed through friction, and the running-in is continued for a certain period of time. After the brake assembly after running-in is cooled according to the prescribed time, a visual inspection is performed to check if there are no obvious physical defects, and the trial skidding experiment is completed.

[0029] It can be seen that the brake assembly running-in device for simulating a test slide provided in the embodiment of the present application saves a lot of manpower and aviation material costs, reduces aircraft downtime, effectively improves aircraft utilization, and fundamentally reduces various risks brought about by the test slide.

[0030] In the above, the test rail 1 is a linear rail, and the test rail 1 is integrally formed with a raised sleeper in the center along the axial direction, and recessed limit grooves are arranged on both sides of the sleeper, and the brake pad fixing part is arranged across the sleeper and fixed. Specifically, Figure 1 As shown, the brake pad fixing part includes a base, a tailstock 2 and a fixed flange 4, wherein a groove body matching the rail sleeper is provided at the bottom of the base, the base is placed on the test rail 1 and fixed by bolts, and the rail sleeper passes through the groove body at the bottom of the base. The tailstock 2 is placed on the base, and the tailstock 2 and the base are fixed to each other by bolts. At the same time, the tailstock 2 is provided with an axial hole in the same direction as the test rail 1, and a shaft rod 3 is provided in the axial hole; the fixed flange 4 is fixed to the end of the shaft rod 3 facing the rotating drive member, and the test brake pad 5 is fixed to the fixed flange 4.

[0031] Based on the structure of the brake pad fixing part, through the bolt connection between the base and the tailstock 2, the brake pad can be installed by replacing the fixed flange 4 corresponding to the brake pad of different aircraft models, so that the device can be applied to the wheel brake running-in test of different models of aircraft.

[0032] In a preferred embodiment, in order to facilitate the installation of the brake pad on the fixed flange 4, as shown in FIG. Figure 1 As shown, a plurality of fixing bolts are arranged on the fixing flange 4, and the brake pad is provided with connecting bolt holes matching with the fixing bolts. Specifically, when installing the brake pad, the brake pad can be fixed to the corresponding position of the fixing flange 4 by the fixing bolts for experiment.

[0033] Of course, in order to fully verify the stability of the aircraft wheel brakes, the fixed flange 4 is provided with a plurality of test brake pads 5, and the plurality of test brake pads 5 are circumferentially arrayed on the fixed flange 4, so that the stability of the aircraft wheel brakes can be accurately detected when the brake pads are in full contact with each other.

[0034] In this embodiment, in order to realize the movement of the rotary drive member along the test guide rail 1, as shown in FIG. Figure 1 As shown, the rotary drive member includes a mobile housing 7 and a rotary motor. The interior of the mobile housing 7 has a cavity, and the rotary motor is installed in the cavity. The output end of the rotary motor extends outward from the mobile housing 7 to the side of the brake pad fixing member, and the output end of the rotary motor is connected to the mobile housing 7 by a bearing. The output end of the rotary motor is provided with a fixing frame for fixing the test brake disc 12, and the test brake disc 12 is fixed to the fixing frame by bolts, and the brake pad can be driven to rotate by the rotary motor. At the same time, the bottom of the mobile housing 7 also has a groove body matching the sleeper, the mobile housing 7 is placed on the test guide rail 1, and the sleeper passes through the groove body. A screw shaft 6 in the same direction as the test guide rail 1 is provided on one side of the sleeper, and a bearing seat is integrally formed at both ends of the test guide rail 1. The two ends of the screw shaft 6 are installed in the bearing seat through bearings, and the mobile housing 7 is provided with a threaded hole for the screw shaft 6 to pass through. The mobile housing 7 is threadedly connected to the screw shaft 6 through the threaded hole, and a rotating handle is provided at one end of the screw shaft 6 close to the brake pad fixing member.

[0035] It can be imagined that the removed test brake disc 12 is fixed to the fixing frame by bolts, and the test brake disc 12 is driven to rotate by a rotating motor. By rotating the handle to rotate the screw shaft 6 in the positive direction, the moving shell 7 is moved along the test guide rail 1 to approach the test brake pad 5, so that the test brake disc 12 is in full contact with the test brake pad 5, and the experiment is completed.

[0036] Generally, the rotating motor may be a conventional speed-controllable AC or DC motor.

[0037] The embodiment of the present application provides a simulated skid test run-in brake assembly device, which is an equivalent alternative device for the run-in of the aircraft wheel brake system. Due to different aircraft models, the initial linear velocity of the aircraft wheel during the test will also be slightly different. Since the initial linear velocity of the tire of the wheel is quantified by the angular velocity of the rotating motor, the angular velocity of the rotating motor during the test will also have different parameter changes and adjustments for different aircraft models. Based on the above reasons, in this embodiment, if Figure 1 As shown, the mobile housing 7 is provided with a speed adjusting knob 8 for adjusting the speed of the rotating motor and a speed display screen 9 for displaying the speed. The speed adjusting button can be used to adjust the speed of the rotating motor (that is, the speed of the test brake disc 12) to meet the test initial speed requirement of the tested model, and the current speed can be intuitively displayed through the speed display screen 9 to strive for the accuracy of the test results.

[0038] Of course, for ease of operation, Figure 1 As shown, the movable housing 7 is also provided with a start-stop button 10 and an emergency stop button 11 for controlling the start and stop of the rotating motor. It can be understood that the start-stop button 10 operates the start and stop of the rotating motor, and the emergency stop button 11 is used to shut down the rotating motor in an emergency to increase the safety of the device.

[0039] In addition, as an example, Figure 1 As shown, a protective cover 13 is further provided on one side of the movable housing 7 located at the test brake pad 5. The protective cover 13 is used to provide a shield when the test brake pad 5 is in contact with the test brake disc 12 for running-in, so as to improve the safety of the test process.

[0040] Based on the above content, the embodiment of the present application provides a simulated skid running-in brake assembly device, and the implementation process of the running-in test experiment of the aircraft wheel brake system is as follows:

[0041] 1) Measure the circumference of the main wheels of the SR20G3 aircraft and calculate the time required for the trial run according to the aircraft manual;

[0042] 2) Convert the average linear speed of the aircraft model required by the manual to the angular speed of the rotating motor driving the brake disc to rotate, and calculate the equivalent speed of the rotating motor; the average linear speed before and during the trial run is proportional to the speed of the rotating motor, and there is a one-to-one correspondence, and the table is summarized and analyzed;

[0043] 3) Set the initial speed of the motor, which is equivalent to the initial speed of the aircraft wheel test slip, fix the brake pad to the fixed flange by electromagnetic or mechanical means, fix the removed brake disc to the output end of the rotating motor, and rotate the screw shaft to move the brake disc to fully contact the brake pad for running-in, reduce the rotating motor speed to the required running-in speed through friction, and continue the running-in step 1) for the required time;

[0044] 4) Physically cool down the brake components during the running-in process to prevent overheating;

[0045] 5) After the brake assembly has been run-in and cooled for the prescribed time, visually inspect the brake pads and brake discs for obvious physical defects. If there are no obvious physical defects, install the brake system for ground use verification;

[0046] 6) After a period of installation verification and equipment improvement, it can be used normally when it meets the requirements of the manual.

[0047] In summary, a brake assembly device for simulating a test skid is proposed in an embodiment of the present application. A rotating drive member with controllable speed is connected and fixed to a disassembled aircraft brake disc to replace the current real aircraft test skid running-in process. The initial linear velocity of the aircraft sliding on the ground is converted into the angular velocity of the rotating drive member driving the brake disc to rotate by an equivalent calculation method, thereby calculating the initial rotation speed of the rotating drive member. Then, an appropriate friction force is applied to the fixed brake pad by electromagnetic or mechanical means to make the brake pad and the brake disc fully contact and run-in. The rotation speed of the rotating drive member is reduced to the required running-in speed by friction. The running-in is continued for a certain period of time. After the brake assembly after the running-in is cooled according to the prescribed time, a visual inspection shows that there are no obvious physical defects, and the test skid experiment is completed, which saves a lot of manpower and aviation material costs, reduces aircraft parking time, effectively improves aircraft utilization, and fundamentally reduces various risks brought about by the test skid.

[0048] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A brake assembly running-in device for simulating a skid test, characterized in that: The test guide rail comprises a test brake disc and a test brake pad, wherein a brake pad fixing part is fixedly arranged at one end of the test guide rail, the test brake pad is fixed to the brake pad fixing part, the rotation driving part is configured to slide along the test guide rail, the test brake disc is driven by the rotation driving part to rotate and moves with the rotation driving part to achieve contact and separation with the test brake pad; The test rail is provided with a sleeper in the center along the axial direction, and the brake pad fixing member is fixedly arranged across the sleeper, and the brake pad fixing member includes: A base, the base being fixed to the sleeper; A tailstock, the tailstock being fixed to the base, the tailstock being provided with an axial hole in the same direction as the test guide rail, and a shaft rod being provided in the axial hole; A fixed flange is fixed to one end of the shaft facing the rotary drive member, and the test brake pad is fixed to the fixed flange.

2. The brake assembly running-in device for simulating skid sledding according to claim 1, characterized in that: The fixing flange is provided with a plurality of fixing bolts, and the brake pad is provided with connecting bolt holes matching the fixing bolts.

3. The brake assembly running-in device for simulating skid sledding according to claim 1, characterized in that: The fixed flange is provided with a plurality of the test brake pads, and the plurality of the test brake pads are circumferentially arrayed on the fixed flange.

4. The brake assembly running-in device for simulating skid sledding according to claim 1, characterized in that: The rotating drive component includes a movable shell and a rotating motor. The movable shell is movably arranged on the sleeper. A screw shaft in the same direction as the test guide rail is arranged on one side of the sleeper. The movable shell is threadedly connected to the screw shaft. The rotating motor is arranged in the shell, and the test brake disc is fixed to the output end of the rotating motor.

5. The brake assembly running-in device for simulating skid testing according to claim 4, characterized in that: A rotating handle is arranged at one end of the screw shaft close to the brake pad fixing piece.

6. The brake assembly running-in device for simulating skid testing according to claim 4, characterized in that: The mobile housing is provided with a start / stop button and an emergency stop button for controlling the start / stop of the rotating motor.

7. The brake assembly running-in device for simulating skid testing according to claim 4, characterized in that: The mobile housing is also provided with a speed regulating knob for adjusting the speed of the rotating motor and a speed display screen for displaying the speed.

8. The brake assembly running-in device for simulating skid testing according to claim 4, characterized in that: The movable housing is also provided with a protective cover on one side of the test brake pad.

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