CN112903172A

CN112903172A - Wheel braking torque testing arrangement

Info

Publication number: CN112903172A
Application number: CN202110255622.9A
Authority: CN
Inventors: 段明智; 张勇; 程璐军
Original assignee: SHANGHAI AVIATION MACHINERY CO Ltd
Current assignee: SHANGHAI AVIATION MACHINERY CO Ltd
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2021-06-04

Abstract

The invention discloses a wheel braking torque testing device, and relates to the technical field of wheel braking torque testing devices. This wheel braking torque testing arrangement, screw rod and the screw thread fit between the swivel nut through setting up, can be when rotating the screw rod, can make left solid fixed splint slide on the scale, left side solid fixed splint can be close to right side solid fixed splint, and then can make two solid fixed splint carry out the centre gripping to the tire and fix, then the operating personnel of being convenient for detects aircraft tire's initial braking torque, can avoid wheel braking torque testing arrangement to take place to rock the circumstances such as when detecting the operation, can improve wheel braking torque testing arrangement and examine the stability of time measuring to aircraft tire, and then can improve the efficiency of carrying out the detection to aircraft tire.

Description

Wheel braking torque testing arrangement

Technical Field

The invention relates to the technical field of wheel braking torque testing devices, in particular to a wheel braking torque testing device.

Background

In order to ensure the safety of taking off and landing of a certain type of airplane, the initial braking torque of the tire of the airplane needs to be detected when the airplane is maintained, the braking torque is also called braking torque, the torque generated by a braking device for preventing the airplane wheel from rolling when the airplane wheel is braked is opposite to the direction of binding torque, the braking torque is one of key parameters for designing the braking airplane wheel, not only is the basis for determining the structural parameters of the braking device determined, but also the structural strength of an undercarriage, the tire and a hub is directly influenced, and the main parameters for calculating the sliding performance, the deceleration performance, the sliding distance, the sliding time, the absorbed energy and the like of the airplane are also calculated.

At present, the brake torque of the brake device of the airplane in China is measured on a large brake inertia test bed before leaving a factory, the brake torque of the airplane wheel installed on an undercarriage is measured, generally, a staff is manually held to measure a force arm, and then subsequent torque conversion is carried out, so that not only is the measured torque result inaccurate, but also the operation of workers is inconvenient, and the test efficiency is low, so that the problem is solved by a device for testing the brake torque of the airplane wheel.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a wheel braking torque testing device, which solves the problems that the braking torque of a wheel arranged on an undercarriage is measured, the moment arm is measured by holding a staff gauge manually and then the subsequent torque is converted, so that the measured torque result is inaccurate, the operation of workers is inconvenient, and the testing efficiency is low.

(II) technical scheme

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: a testing device for the brake torque of a machine wheel comprises two fixed clamping plates, wherein sliding clamping plates are fixedly arranged on the front sides of the two fixed clamping plates, the two sliding clamping plates are internally provided with a same scale, a first round hole formed in the left sliding clamping plate is connected with an optical axis part on the left side of a screw rod through a sliding sleeve, a baffle ring is arranged on the side wall of the sliding sleeve and is sleeved on the screw rod, a third screw is in threaded connection with the upper side and the lower side of the baffle ring, a bolt is arranged on the left side of the screw rod and is sleeved with the sliding sleeve, a threaded sleeve is arranged on the right side of the sliding clamping plate, a retainer ring is arranged on the left side of the threaded sleeve and is connected with a dustproof pipe through the first screw, a dustproof sealing piece is arranged on the left side of the dustproof pipe, the threaded sleeve is sleeved on the screw rod, the threaded sleeve is provided with a key and a bolt.

Preferably, a sliding clamping plate sleeve is fixedly arranged in the sliding clamping plate on the left side through a second screw, and the scale is in sliding connection with the sliding clamping plate sleeve.

Preferably, a fixed splint sleeve is fixedly arranged in the sliding splint on the right side through a second screw, and a modified pin is fixedly arranged on the bottom side of the fixed splint sleeve through a fifth screw.

Preferably, the middle part of the scale is sleeved with a sliding block, and the rear side of the sliding block is fixedly provided with a sliding block seat through a screw.

Preferably, the upper surface of the scale is provided with scale marks, and the starting points of the scale marks are arranged on one side close to the fixed splint sleeve.

(III) advantageous effects

The invention has the beneficial effects that:

1. this wheel braking torque testing arrangement, screw rod and the screw thread fit between the swivel nut through setting up, can be when rotating the screw rod, can make left solid fixed splint slide on the scale, left side solid fixed splint can be close to right side solid fixed splint, and then can make two solid fixed splint carry out the centre gripping to the tire and fix, then the operating personnel of being convenient for detects aircraft tire's initial braking torque, can avoid wheel braking torque testing arrangement to take place to rock the circumstances such as when detecting the operation, can improve wheel braking torque testing arrangement and examine the stability of time measuring to aircraft tire, and then can improve the efficiency of carrying out the detection to aircraft tire.

2. This wheel braking torque testing arrangement through the dustproof pipe of installation on solid fixed splint, can be used to prevent that the dust from polluting the screw thread part of screw rod, and then can play the guard action to the screw thread part of screw rod, can avoid the screw thread part of screw rod to be infected with dust etc. and cause the slip unsmooth, and then can guarantee this testing arrangement's normal use etc..

Drawings

FIG. 1 is a schematic view of a three-dimensional partially exploded structure of the present invention;

FIG. 2 is a schematic top view of a partial cross-sectional structure of the present invention;

fig. 3 is a schematic perspective view of the present invention in use.

In the figure: the device comprises a fixed clamping plate 1, a retainer ring 2, a first screw, a dust-proof pipe 4, a dust-proof sealing part 5, a retaining ring 6, a sliding sleeve 7, a bolt 8, a screw rod 9, a second screw, a sliding clamping plate sleeve 11, a scale 12, a sliding clamping plate 13, a third screw, a fourth screw, a slider seat 16, a slider 17, a fifth screw, a modified bolt 19, a fixed clamping plate sleeve 20, a threaded sleeve 21, a dust-proof ring 22, a flange 23, a sixth screw 24, a key 25 and a bolt 27.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-3, the present invention provides a technical solution: a testing device for the braking torque of a machine wheel comprises two fixed clamping plates 1, wherein sliding clamping plates 13 are fixedly arranged on the front sides of the two fixed clamping plates 1, a same scale 12 is arranged in the two sliding clamping plates 13, a round hole I formed in the left sliding clamping plate 13 is connected with a left optical axis part of a screw 9 through a sliding sleeve 7, a baffle ring 6 arranged on the side wall of the sliding sleeve 7 is sleeved on the screw 9, a third screw 14 is connected with the upper side and the lower side of the baffle ring 6 in a threaded manner, the screw 9 and the left fixed clamping plate 1 can be connected through the sleeved connection of the sliding sleeve 7 and the screw 9, further, when the screw 9 rotates, the left fixed clamping plate 1 slides on the scale 12, a bolt 8 is arranged on the left side of the screw 9 and is sleeved with the sliding sleeve 7, two round holes formed in the right sliding clamping plate 13 are provided with screw sleeves 21, the screw sleeves 21 are connected with the screw 9, the screw rod 9 is moved to the right in the screw sleeve 21, and then the screw rod 9 drives the left fixed splint 1 to slide to the right on the scale 12, so that the two fixed splints 1 are mutually close to clamp a tire, the side-viewing device is fixed on the tire, the left side of the screw sleeve 21 is provided with a check ring 2, the check ring 2 is connected with a dustproof pipe 4 through a screw I3, the left side of the dustproof pipe 4 is provided with a dustproof sealing part 5, and the dustproof pipe 4 can be used for preventing dust from polluting the thread part of the screw rod 9, thereby protecting the thread part of the screw 9, avoiding the unsmooth sliding caused by the dust and the like on the thread part of the screw 9, and further, the normal use of the testing device can be ensured, and the like, the threaded sleeve 21 is sleeved on the screw rod 9, the threaded sleeve 21 is fixedly provided with a flange 23 through a six screw 24, a dust ring 22 is arranged between the threaded sleeve 21 and the flange 23, and the threaded sleeve 21 is provided with a key 25 and a plug 26.

A sliding clamping plate sleeve 11 is fixedly arranged in the left sliding clamping plate 13 through a second screw 10, and the scale 12 is in sliding connection with the sliding clamping plate sleeve 11.

A fixed splint sleeve 20 is fixedly arranged in the right sliding splint 13 through another screw II 10, and a modified pin 19 is fixedly arranged at the bottom side of the fixed splint sleeve 20 through a screw V18.

The middle part of the scale 12 is sleeved with a sliding block 17, and the rear side of the sliding block 17 is fixedly provided with a sliding block seat 16 through a screw four 15.

The upper surface of scale 12 is provided with the scale mark, and the starting point setting of scale mark is in the one side that is close to fixed splint cover 20, can observe the distance between two fixed splint 1 through the scale mark that sets up on scale 12, sets up the scale mark starting point on the right side of scale, can be when the fixed splint 1 in left side removes, is convenient for observe the distance between two fixed splint 1.

The method comprises the following operation steps:

s1, when in use, firstly, whether the airplane wheel braking moment testing device is loosened or not is confirmed, and whether the fixed clamping plate 1 is clamped or not is checked;

s2, rotating the screw 9 by a wrench, connecting the screw 9 by the thread of the threaded sleeve 21, making the distance between the right fixed splint 1 and the left fixed splint 1 larger than the diameter of the tire, placing the device for testing the braking moment of the wheel on the main wheel in the diameter direction of the tire, distributing the two fixed splints 1 on the left and right sides of the tire respectively, then rotating the screw 9 reversely by the wrench, at this time, because the screw 9 is connected with the thread of the threaded sleeve 21, making the two fixed splints 1 approach each other to clamp the tire, then observing the distance between the two fixed splints 1 on the scale 12 by the scale line, shifting the wrench interface assembly to be in the middle position of the two splints, and testing the braking moment by the torque wrench;

and S3, reversely rotating the screw 9 by using a spanner to separate the two fixing splints 2 from the tire, and removing the fixing device.

The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a wheel braking moment testing arrangement, includes two solid fixed splint (1), its characterized in that: the front sides of the two fixed clamping plates (1) are fixedly provided with sliding clamping plates (13), the two sliding clamping plates (13) are internally provided with the same scale (12), a round hole I formed in the left side of each sliding clamping plate (13) is connected with the left side optical axis part of the screw rod (9) through a sliding sleeve (7), the side wall of each sliding sleeve (7) is provided with a baffle ring (6) which is sleeved on the screw rod (9), the upper side and the lower side of each baffle ring (6) are in threaded connection with a screw III (14), the left side of the screw rod (9) is provided with a bolt (8) which is sleeved with the sliding sleeve (7), the round hole II formed in the right side of each sliding clamping plate (13) is provided with a threaded sleeve (21), the left side of each threaded sleeve (21) is provided with a check ring (2), the check ring (2) is connected with a dustproof pipe (4) through the screw I (3), and, the screw sleeve (21) is sleeved on the screw rod (9), a flange (23) is fixedly arranged on the screw sleeve (21) through a screw six (24), a dustproof ring (22) is arranged between the screw sleeve (21) and the flange (23), and a key (25) and a plug pin (26) are arranged on the screw sleeve (21).

2. The wheel braking torque testing device of claim 1, wherein: a sliding clamping plate sleeve (11) is fixedly arranged in the sliding clamping plate (13) on the left side through a second screw (10), and the scale (12) is in sliding connection with the sliding clamping plate sleeve (11).

3. The wheel braking torque testing device of claim 1, wherein: a fixed splint sleeve (20) is fixedly arranged in the sliding splint (13) on the right side through another screw II (10), and a modified pin (19) is fixedly arranged on the bottom side of the fixed splint sleeve (20) through a screw V (18).

4. The wheel braking torque testing device of claim 1, wherein: the upper middle part of the scale (12) is sleeved with a sliding block (17), and the rear side of the sliding block (17) is fixedly provided with a sliding block seat (16) through a screw four (15).

5. The wheel braking torque testing device of claim 1, wherein: the upper surface of the scale (12) is provided with scale marks, and the starting points of the scale marks are arranged on one side close to the fixed splint sleeve (20).