Retractable adjusting device for air pressure measurer

Abstract

The utility model relates to the technical field of aircraft airspeed calibration, in particular to an air pressure measurer adjusting and retracting device which comprises an electric telescopic column, a fixing assembly, a dragging pipe and a retracting assembly, the electric telescopic column is arranged in a cabin, the fixing assembly is arranged at the bottom of the electric telescopic column, and the dragging pipe enters the cabin through a through hole formed in the bottom wall of the cabin. The top of the dragging pipe is fixedly connected with the bottom of the fixing assembly, a dragging rope, a total pressure air guide pipe and a static pressure air guide pipe are arranged in the dragging pipe, the total pressure air guide pipe and the static pressure air guide pipe are connected with a sensor arranged in a cabin, the winding and unwinding assembly corresponds to the fixing assembly and is arranged on the inner side wall of the cabin, and the top of the dragging rope penetrates through the bottom of the fixing assembly. And the dragging rope is slidably connected with the bottom of the fixing assembly and then extends towards the retracting and releasing assembly, so that the accuracy of air pressure measurement is improved, the adaptability and reliability of the device are enhanced, and more accurate data support is provided for an aircraft to execute a test task.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft airspeed calibration, and particularly relates to an adjusting retracting and extending device for a barometric pressure measurer. Background Art

[0002] In the aviation field, barometric pressure measurement is an important part of flight safety and navigation. When an aircraft is flying at high altitude, it is necessary to accurately measure the total pressure and static pressure of the atmosphere to calculate key parameters such as air density, flight altitude, and speed. Traditional barometric pressure measurement is usually carried out by sensors installed on the surface of the aircraft fuselage. However, these sensors are easily affected by the airflow disturbance of the aircraft itself, resulting in inaccurate measurement data. To improve the measurement accuracy, researchers have developed a drag-type barometric pressure measurement device. This device places the measuring instrument outside the airflow disturbance area generated by the aircraft through a drag tube to reduce the influence of the disturbance on the measurement result. However, the existing retracting and extending mechanism is usually designed in a fixed mode and cannot flexibly adjust the extension length and speed of the drag tube according to the actual flight conditions, which limits the application range of the measurement device in different flight stages. The drag rope inside the drag tube may be restricted by the internal structure of the drag tube during the telescopic process, resulting in inability to freely expand and contract, affecting the normal deployment and recovery of the measurement device. Content of the Utility Model

[0003] In view of this, the utility model aims at the deficiencies of the prior art and provides an adjusting retracting and extending device for a barometric pressure measurer, aiming to solve at least one of the problems raised in the above background art.

[0004] The utility model provides an adjusting retracting and extending device for a barometric pressure measurer, including: an electric telescopic column, which is arranged in the cabin, and the installation end at the top of the electric telescopic column is fixedly connected with the inner top wall of the cabin;

[0005] a fixing component, which is arranged at the bottom of the electric telescopic column, and the top of the fixing component is fixedly connected with the bottom of the electric telescopic column;

[0006] a drag tube, which enters the cabin through a through hole arranged on the bottom wall of the cabin. The top of the drag tube is fixedly connected with the bottom of the fixing component. A drag rope, a total pressure air extraction duct, and a static pressure air extraction duct are arranged inside the drag tube. The total pressure air extraction duct and the static pressure air extraction duct are connected with sensors arranged in the cabin;

[0007] a retracting and extending component, which is arranged on the inner side wall of the cabin corresponding to the fixing component. The installation end of the retracting and extending component is fixedly connected with the inner side wall of the cabin. The top of the drag rope passes through the bottom of the fixing component, and after being slidably connected with the bottom of the fixing component, the drag rope extends towards the retracting and extending component, and the top of the drag rope is fixedly connected with the retracting and extending component.

[0008] In some embodiments, the electric telescopic column coincides with the axis of the through hole.

[0009] In some embodiments, the fixing assembly includes:

[0010] U-shaped members, two of which are symmetrically arranged with respect to the electric telescopic column. The tops of the two U-shaped members are respectively fixedly connected to the telescopic ends at the bottom of the electric telescopic column, and the bottoms of the two U-shaped members are respectively fixedly connected to the top of the drag pipe;

[0011] A pulley, which is arranged at the bottom of the electric telescopic column. The mounting end at the top of the pulley is fixedly connected to the telescopic end at the bottom of the electric telescopic column. The top of the drag rope passes through the pulley and is arranged in the pulley groove, and the drag rope is rotatably connected to the pulley.

[0012] In some embodiments, the pulley coincides with the axis of the electric telescopic column.

[0013] In some embodiments, the inner diameter of the pulley groove matches the outer diameter of the drag rope.

[0014] In some embodiments, the retracting and releasing assembly is arranged corresponding to the sliding end of the pulley and is on the same plane.

[0015] In some embodiments, the retracting and releasing assembly includes:

[0016] Support blocks, two of which are correspondingly arranged. One sides of the two support blocks are respectively fixedly connected to the inner wall of the engine nacelle;

[0017] An electric rotating shaft, which is arranged between the two support blocks, and both ends of the electric rotating shaft are rotatably connected to the corresponding sides of the two support blocks. The top of the drag rope is fixedly connected to the electric rotating shaft.

[0018] In some embodiments, the outer diameter of the telescopic end at the bottom of the electric telescopic column is the same as the outer diameter of the top of the drag pipe.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows: The device can realize the vertical downward telescopic adjustment of the drag pipe, and through the fixing assembly, it ensures that the drag rope can freely stretch without being restricted by the drag pipe. Such a design not only improves the accuracy of air pressure measurement, but also enhances the adaptability and reliability of the device, providing more accurate data support for the aircraft to perform test tasks.

[0020] The above general description and the following detailed description are exemplary and explanatory only and do not limit the present disclosure.

[0021] Other features and aspects of the present disclosure will become clearer according to the following detailed description of the exemplary embodiments with reference to the accompanying drawings. Brief Description of the Drawings

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a front structural sectional view of the retracting and releasing device for the air pressure measuring device provided by the embodiment of the present invention;

[0024] Figure 2 It is a partial enlarged view of the retracting and releasing device for the air pressure measuring device provided by the embodiment of the present invention;

[0025] Figure 3 It is an isometric view of the retracting and releasing device for the air pressure measuring device provided by the embodiment of the present invention.

[0026] Wherein: 1, electric telescopic column; 2, fixing component; 3, drag tube; 4, drag rope; 5, total pressure air intake duct; 6, static pressure air intake duct; 7, retracting and releasing component; 8, U-shaped part; 9, pulley; 10, support block; 11, electric rotating shaft; 12, through hole. Detailed Description of the Embodiments

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0028] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0029] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0030] In the description of this application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] As in the background art, existing retracting and deploying mechanisms are usually designed in a fixed mode and cannot flexibly adjust the extension length and speed of the drag tube according to actual flight conditions, which limits the application range of the measuring device in different flight stages. The drag rope inside the drag tube may be restricted by the internal structure of the drag tube during the telescoping process, resulting in inability to freely expand and contract, affecting the normal deployment and recovery of the measuring device.

[0032] To improve the above problems, a retracting and deploying device for a barometer adjustment proposed in this application can achieve vertical downward telescopic adjustment of the drag tube and ensure that the drag rope can freely expand and contract without being restricted by the drag tube through a fixing component. Such a design not only improves the accuracy of barometric pressure measurement but also enhances the adaptability and reliability of the device, providing more accurate data support for the aircraft to perform test tasks.

[0033] Refer to Figures 1-3 As shown, a retracting and deploying device for a barometer adjustment according to an embodiment of this application includes:

[0034] An electric telescopic column 1, which is arranged inside the cabin, and the mounting end at the top of the electric telescopic column 1 is fixedly connected to the inner top wall of the cabin;

[0035] A fixing component 2, the fixing component 2 is arranged at the bottom of the electric telescopic column 1, and the top of the fixing component 2 is fixedly connected to the bottom of the electric telescopic column 1;

[0036] A drag tube 3, the drag tube 3 enters the cabin through a through hole 12 provided in the bottom wall of the cabin, the top of the drag tube 3 is fixedly connected to the bottom of the fixing component 2, and a drag rope 4, a total pressure air supply conduit 5, and a static pressure air supply conduit 6 are arranged inside the drag tube 3. The total pressure air supply conduit 5 and the static pressure air supply conduit 6 are connected to sensors arranged inside the cabin;

[0037] A retracting and deploying assembly 7, the retracting and deploying assembly 7 is arranged on the inner side wall of the cabin corresponding to the fixing assembly 2, the installation end of the retracting and deploying assembly 7 is fixedly connected to the inner side wall of the cabin, the top of the towing rope 4 passes through the bottom of the fixing assembly 2, and after the towing rope 4 is slidably connected to the bottom of the fixing assembly 2, it extends towards the retracting and deploying assembly 7, and the top of the towing rope 4 is fixedly connected to the retracting and deploying assembly 7.

[0038] It should be understood that the up and down movement of the telescopic end of the electric telescopic column 1 can drive the towing pipe 3 to move up and down accordingly, and thus the position of the warhead for detecting air pressure can be adjusted through the electric telescopic column 1.

[0039] In some specific embodiments, the axis of the electric telescopic column 1 coincides with the axis of the through hole 12.

[0040] In some specific embodiments, the fixing assembly 2 includes:

[0041] U-shaped members 8, there are two U-shaped members 8 symmetrically arranged with respect to the electric telescopic column 1, the tops of the two U-shaped members 8 are respectively fixedly connected to the telescopic end of the bottom of the electric telescopic column 1, and the bottoms of the two U-shaped members 8 are respectively fixedly connected to the top of the towing pipe 3;

[0042] A pulley 9, the pulley 9 is arranged at the bottom of the electric telescopic column 1, the installation end of the top of the pulley 9 is fixedly connected to the telescopic end of the bottom of the electric telescopic column 1, the top of the towing rope 4 passes through the pulley 9 and is arranged in the groove of the pulley 9, and the towing rope 4 is rotatably connected to the pulley 9.

[0043] It should be understood that after the top of the towing rope 4 abuts and fits with the groove of the pulley 9, the movement direction is changed, so that the towing rope 4 moves towards the retracting and deploying assembly 7. When the towing rope 4 moves, the part below the pulley 9 is vertically corresponding to the through hole 12.

[0044] In some specific embodiments, the axis of the pulley 9 coincides with the axis of the electric telescopic column 1.

[0045] In some specific embodiments, the inner diameter of the groove of the pulley 9 matches the outer diameter of the towing rope 4.

[0046] In some specific embodiments, the retracting and deploying assembly 7 is arranged corresponding to the sliding end of the pulley 9 and is on the same plane.

[0047] In some specific embodiments, the retracting and deploying assembly 7 includes:

[0048] Support blocks 10, there are two support blocks 10 corresponding to each other, and one side of the two support blocks 10 is respectively fixedly connected to the inner wall of the cabin;

[0049] The electric rotating shaft 11 is arranged between the two support blocks 10, and both ends of the electric rotating shaft 11 are rotatably connected to the corresponding sides of the two support blocks 10 respectively. The top of the drag rope 4 is fixedly connected to the electric rotating shaft 11.

[0050] It should be understood that when the electric rotating shaft 11 rotates forward or reversely, the drag rope 4 moves accordingly under the action of the electric rotating shaft 11, so that the entire drag rope 4 moves up and down in the drag tube 3 accordingly.

[0051] In some specific embodiments, the outer diameter of the bottom extension end of the electric telescopic column 1 is the same as the outer diameter of the top of the drag tube 3.

[0052] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.

Claims

1. An adjusting retracting and extending device for a barometric pressure measurer, characterized in that, Comprising: An electric telescopic column, which is arranged in the engine room, and the top mounting end of the electric telescopic column is fixedly connected to the inner top wall of the engine room; A fixing component, which is arranged at the bottom of the electric telescopic column, and the top of the fixing component is fixedly connected to the bottom of the electric telescopic column; A drag pipe, which enters the engine room through a through hole provided in the bottom wall of the engine room. The top of the drag pipe is fixedly connected to the bottom of the fixing component. A drag rope, a total pressure bleed air duct, and a static pressure bleed air duct are arranged in the drag pipe. The total pressure bleed air duct and the static pressure bleed air duct are connected to sensors arranged in the engine room; A retracting and deploying component, which is arranged on the inner side wall of the engine room corresponding to the fixing component. The mounting end of the retracting and deploying component is fixedly connected to the inner side wall of the engine room. The top of the drag rope passes through the bottom of the fixing component, and after slidingly connecting with the bottom of the fixing component, it extends towards the retracting and deploying component. The top of the drag rope is fixedly connected to the retracting and deploying component.

2. The air pressure measuring device adjusting retracting and extending device according to claim 1, characterized in that, The electric telescopic column coincides with the axis of the through hole.

3. A retractable device for adjusting a barometric pressure measuring device according to claim 1, characterized in that, The fixing component includes: U-shaped parts, two of which are symmetrically arranged with respect to the electric telescopic column. The tops of the two U-shaped parts are respectively fixedly connected to the telescopic ends at the bottom of the electric telescopic column, and the bottoms of the two U-shaped parts are respectively fixedly connected to the top of the drag pipe; A pulley, which is arranged at the bottom of the electric telescopic column. The top mounting end of the pulley is fixedly connected to the telescopic end at the bottom of the electric telescopic column. The top of the drag rope passes through the pulley and is arranged in the pulley groove. The drag rope is rotatably connected to the pulley.

4. A retractable device for adjusting a barometer, as claimed in claim 3, wherein The pulley coincides with the axis of the electric telescopic column.

5. A retractable adjusting device for a barometer, as claimed in claim 4, wherein The inner diameter of the pulley groove matches the outer diameter of the drag rope.

6. The air pressure measuring device adjusting retracting and extending device according to claim 3, characterized in that, The retracting and deploying component is arranged corresponding to the sliding end of the pulley and is on the same plane.

7. A retractable device for adjusting a barometer, as claimed in claim 6, wherein The retracting and deploying component includes: Support blocks, two of which are correspondingly arranged. One sides of the two support blocks are respectively fixedly connected to the inner wall of the engine room; An electric rotating shaft, which is arranged between the two support blocks, and the two ends of the electric rotating shaft are respectively rotatably connected to the corresponding sides of the two support blocks. The top of the drag rope is fixedly connected to the electric rotating shaft.

8. A retractable adjusting device for a barometric pressure measuring device according to claim 1, characterized in that, The outer diameter of the telescopic end at the bottom of the electric telescopic column is the same as the outer diameter of the top of the drag pipe.

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