阅读说明：本技术 一种发动机喷口直径测量装置 (Engine nozzle diameter measuring device ) 是由 韩海涛 赵洪丰 刘勇 贺军崴 王磊 于 2020-04-27 设计创作，主要内容包括：本发明涉及一种发动机喷口直径测量装置,包括电源壳体及电动伸缩单元,电源壳体一端设有可拆卸的加长杆,加长杆与壳体的非连接端设有用于顶靠喷口端面的定顶尖,壳体内部相对于加长杆的一端设有容置腔,电动伸缩单元的固定端通过安装座固定在容置腔内部,电动伸缩单元的伸缩端外部套设有外壳体,外壳体可拆卸的设置在安装座相对于伸缩机构固定端的一侧,电动伸缩单元的伸缩端顶端固定设有顶杆,顶杆的顶部设有用于顶靠喷口端面的加载顶尖,加载顶尖与顶杆之间设有压力传感器,电动伸缩单元的伸缩端与外壳体之间设有用于检测顶杆位移的位移检测单元,本发明测量结果客观,测量精度高且胀紧力加载与保持精度高。(The invention relates to an engine nozzle diameter measuring device, which comprises a power supply shell and an electric telescopic unit, wherein a detachable extension bar is arranged at one end of the power supply shell, a fixed center used for abutting against the end surface of a nozzle is arranged at the non-connecting end of the extension bar and the shell, an accommodating cavity is arranged at one end, opposite to the extension bar, in the shell, the fixed end of the electric telescopic unit is fixed in the accommodating cavity through a mounting seat, an outer shell is sleeved outside the telescopic end of the electric telescopic unit, the outer shell is detachably arranged at one side, opposite to the fixed end of a telescopic mechanism, of the mounting seat, an ejector rod is fixedly arranged at the top end of the telescopic end of the electric telescopic unit, a loading center used for abutting against the end surface of the nozzle is arranged at the top of the ejector rod, a pressure sensor is arranged between the loading center and the ejector, the measuring precision is high, and the loading and maintaining precision of the expansion force is high.)

1. An engine nozzle diameter measuring device is characterized by comprising a power supply shell and an electric telescopic unit, wherein a detachable extension bar is arranged at one end of the power supply shell, a fixed center used for abutting against the end face of a nozzle is arranged at the non-connecting end of the extension bar and the shell, an accommodating cavity is arranged at one end, opposite to the extension bar, in the shell, the fixed end of the electric telescopic unit is fixed in the accommodating cavity through a mounting seat, an outer shell is sleeved outside the telescopic end of the electric telescopic unit, the outer shell is detachably arranged at one side, opposite to the fixed end of a telescopic mechanism, of the mounting seat, an ejector rod is fixedly arranged at the top end of the telescopic end of the electric telescopic unit, a loading center used for abutting against the end face of the nozzle is arranged at the top of the ejector rod, a pressure sensor is arranged between the loading center and the, the outside of shell body is equipped with the controller, pressure sensor and displacement detection unit all with controller electric connection.

2. The device for measuring the diameter of the nozzle of the engine as claimed in claim 1, wherein the electric telescopic unit comprises a motor, a lead screw is arranged on an output shaft of the motor, a sliding nut is sleeved outside the lead screw, a telescopic sleeve is fixed on one side of the sliding nut away from the motor, and the ejector rod is fixed on one side end face of the telescopic sleeve away from the sliding nut.

3. The engine nozzle diameter measuring device according to claim 1, wherein the electric telescopic unit is an electric hydraulic rod, and the ejector rod is fixed at the top end of a telescopic joint of the electric hydraulic rod.

4. An engine nozzle diameter measuring device according to any one of claims 1 to 3, wherein the displacement detecting unit is a displacement sensor.

5. The engine jet diameter measuring device of claim 4, wherein said displacement sensor is a capacitive grating displacement sensor.

6. The engine nozzle diameter measuring device according to claim 2 or 5, wherein a movable grid sheet in a capacitive grid displacement sensor is fixed on the telescopic sleeve, and a fixed grid sheet in the capacitive grid displacement sensor is fixed on the outer shell.

7. The engine nozzle diameter measuring device according to claim 1, wherein a display screen is further arranged on the outer shell, and the display screen is electrically connected with the controller and used for editing control parameters of the controller and displaying data of the pressure sensor and the displacement detection unit.

8. The engine jet diameter measuring device of claim 1, wherein a handle is further removably disposed on the power supply housing.

Technical Field

The invention relates to the technical field of engine measurement, in particular to a device for measuring the diameter of an engine nozzle.

Background

After the aircraft engine spout subassembly assembly is accomplished, need detect the spout actual size, check it and meet with the design requirement whether, in addition, the engine when with the aircraft assembly, need jointly transfer, mark spout size and aircraft actuation operating system to guarantee to obtain the power output who satisfies the requirement.

The existing measuring equipment adopts a purely mechanical method, the expansion force is loaded through screw transmission, the loading force is limited to be adjusted through a spring and a force adjusting bolt by means of manual reading of a graduated scale, the expansion force is loaded in an air pressure actuating mode, the size is read by aligning scales of a fixed scale and a measuring rod, and the limitation of the loading force is realized through a constant pressure valve. However, the two measuring devices adopt a graduated scale reading mode, so that the measuring precision is poor, the measuring result is greatly influenced by human factors, the loading and maintaining precision of the tensioning force is poor, the failure of the tensioning force is not easy to perceive, and the tensioning loading system is complex.

Disclosure of Invention

The embodiment of the invention provides the engine nozzle diameter measuring device which is objective in measuring result, high in measuring precision and high in loading and maintaining precision of the expansion force.

In a first aspect, an embodiment of the invention provides an engine nozzle diameter measuring device, which comprises a power supply shell and an electric telescopic unit, wherein a detachable extension bar is arranged at one end of the power supply shell, a fixed center for abutting against the nozzle end face is arranged at the non-connecting end of the extension bar and the shell, an accommodating cavity is arranged at one end, opposite to the extension bar, inside the shell, a fixed end of the electric telescopic unit is fixed inside the accommodating cavity through a mounting seat, an outer shell is sleeved outside a telescopic end of the electric telescopic unit, the outer shell is detachably arranged at one side, opposite to the fixed end of a telescopic mechanism, of the mounting seat, an ejector rod is fixedly arranged at the top end of the telescopic end of the electric telescopic unit, a loading center for abutting against the nozzle end face is arranged at the top of the ejector rod, a pressure sensor is arranged between the loading center and the ejector rod, and a displacement detecting, the outside of shell body is equipped with the controller, pressure sensor and displacement detection unit all with controller electric connection.

Further, electronic flexible unit includes the motor, is equipped with the lead screw on the motor output shaft, and the outside cover of lead screw is equipped with sliding nut, and sliding nut keeps away from one side of motor and is fixed with the telescope tube, the ejector pin is fixed at the lateral surface that sliding nut was kept away from to the telescope tube.

Furthermore, the electric telescopic unit is an electric hydraulic rod, and the ejector rod is fixed at the top end of a telescopic joint of the electric hydraulic rod.

Further, the displacement detection unit is a displacement sensor.

Further, the displacement sensor is a capacitive grating displacement sensor.

Furthermore, a movable grid sheet in the capacitive grid displacement sensor is fixed on the telescopic sleeve, and a fixed grid sheet in the capacitive grid displacement sensor is fixed on the outer shell.

Further, still be equipped with the display screen on the shell body, display screen and controller electric connection for edit controller control parameter, show pressure sensor and displacement detection unit data.

Furthermore, a handle is detachably arranged on the power supply shell.

In conclusion, the power supply shell, the extension rod and the outer shell are detachably spliced, so that the range of the device is enlarged, the carrying of the device is facilitated, the measuring precision is improved, and the loading and holding precision of the expansion force is improved by adopting a motor driving and automatic loading and holding mode of the expansion force; by arranging the pressure sensor, the expansion force can be monitored, and the measurement precision and the expansion force maintaining precision are further improved; the displacement sensor is a capacitive grating displacement sensor, so that the installation is convenient and fast, and the installation space is saved; by arranging the display screen, parameters can be conveniently edited and read, the measurement precision and stability are improved, and the working intensity of operators is reduced; through setting up removable handle, portable measuring equipment.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a schematic view of the structure of the measuring device of the present invention;

fig. 2 is a sectional view of section a-a in fig. 1.

In the figure:

1. a power supply housing; 2. a power source; 3. a motor; 4. a mounting seat; 5. a lead screw; 6. a sliding nut; 7. a telescopic sleeve; 8. a top rod; 9. loading a tip; 10. a pressure sensor; 11. a movable grid sheet; 12. a grid fixing sheet; 13. an outer housing; 14. a display screen; 15. a handle; 16. and (5) lengthening the rod.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention and are not intended to limit the scope of the invention, i.e., the invention is not limited to the embodiments described, but covers any modifications, substitutions and improvements in the parts, components and connections without departing from the spirit of the invention.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Fig. 1 and 2 show an engine nozzle diameter measuring device according to an embodiment of the present invention, which includes a power supply housing 1 and an electric telescopic unit, wherein a detachable extension rod 16 is disposed at one end of the power supply housing 1, the extension rod 16 and the power supply housing 1 are connected by a screw thread or a snap joint, a fixed tip for abutting against an end surface of a nozzle is disposed at a non-connecting end of the extension rod 16 and the housing, an accommodating cavity is disposed at an end of the housing opposite to the extension rod 16, a power supply 2 is further disposed in the accommodating cavity, a charging port is disposed on the power supply housing 1, a fixed end of the electric telescopic unit is fixed in the accommodating cavity by a mounting seat 4, the electric telescopic unit in this embodiment can be any existing telescopic structure or telescopic device, as long as automatic telescopic can be controlled, and an outer housing 13 is sleeved outside a telescopic end of the electric telescopic unit, outer casing 13 detachable sets up in one side of mount pad 4 for the telescopic machanism stiff end, 4 both ends of mount pad are passed through the screw and are connected with outer casing 13 and power supply housing 1, the flexible end top of electronic flexible unit is fixed and is equipped with ejector pin 8, the top of ejector pin 8 is equipped with and is used for the top to lean on the top 9 of loading of spout terminal surface, be equipped with pressure sensor 10 between loading top 9 and the ejector pin 8, be equipped with the displacement detection unit that is used for detecting 8 displacements of ejector pin between the flexible end of electronic flexible unit and outer casing 13, the outside of outer casing 13 is equipped with the controller, pressure sensor 10 and displacement detection unit all with controller electric connection.

In a specific embodiment of the invention, the electric telescopic unit comprises a motor 3, a lead screw 5 is arranged on an output shaft of the motor 3, the output shaft of the motor 3 is connected with the lead screw 5 through a coupler, one end, far away from a top rod 8, of the lead screw 5 is fixed in the mounting base 4 through a locking nut and a bearing, a sliding nut 6 is sleeved outside the lead screw 5, a telescopic sleeve 7 is fixed on one side, far away from the motor 3, of the sliding nut 6, the telescopic sleeve 7 is fixed on the sliding nut 6 through a screw, the top rod 8 is fixed on the end face, far away from the sliding nut 6, of the telescopic sleeve 7, the lead screw 5 in the embodiment is the sliding lead screw 5, self-locking of the sliding nut 6 can be realized, and the.

The automatic telescopic unit in the invention can also be an electric hydraulic rod with a self-locking function, the electric hydraulic rod is the existing equipment, the structure of the electric hydraulic rod is not described in detail, as long as the automatic telescopic unit can realize automatic telescopic and has the self-locking function, the ejector rod 8 is fixed at the top end of the telescopic joint of the electric hydraulic rod, the controller controls the motor 3 in the electric hydraulic rod to operate, the type and the size of the electric hydraulic rod are adapted according to the actual needs, and the electric hydraulic rod is not specifically limited herein as long as the ejector rod 8 can be driven to stretch.

In a specific embodiment of the present invention, the displacement detection unit is a displacement sensor, and in order to save an installation space and make the installation of the displacement sensor more convenient, the displacement sensor is a capacitive-grid displacement sensor, a movable grid 11 in the capacitive-grid displacement sensor is fixed on the telescopic sleeve 7, the movable grid 11 in this embodiment is adhered on the telescopic sleeve 7 through an adhesive, a fixed grid 12 in the capacitive-grid displacement sensor is fixed on the outer shell 13, the fixed grid 12 in this embodiment is adhered on the outer shell 13 through an adhesive, and of course, the movable grid 11 and the fixed grid 12 may also adopt other existing fixing methods.

In order to realize digital interactive display, facilitate the editing and reading of parameters, improve the measurement accuracy and stability, and reduce the working strength of operators, the outer shell 13 is further provided with a display screen 14, and the display screen 14 is electrically connected with the controller and used for editing the control parameters of the controller and displaying the data of the pressure sensor 10 and the displacement detection unit.

For the gripping of the measuring device and for easy detachable carrying, a handle 15 is also detachably arranged on the power supply housing 1.

In the implementation process of the invention, before loading measurement, loading parameters are set through the display screen 14, after the setting is finished, the fixed center is abutted against the inner wall surface of the nozzle, clicking is started, the controller drives the lead screw 5 to rotate, the lead screw 5 drives the sliding nut 6 to linearly move, the telescopic sleeve 7 connected with the sliding nut 6 starts to extend, the movable grid sheet 11 fixed on the telescopic sleeve 7 and the fixed grid sheet 12 are matched with each other to feed back a displacement signal, the pressure sensor 10 is used for monitoring the magnitude of the loading force in real time, after the loading center 9 is abutted against the inner wall surface of the nozzle, the telescopic sleeve 7 continuously extends until the loading force reaches the set parameters, the controller controls the driving motor 3 to stop, and the display screen 14 displays the measurement result in real time. After the measurement is completed, the device is reset by touching a reset key on the display screen 14.

It should be clear that the embodiments in this specification are described in a progressive manner, and the same or similar parts in the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. For the embodiments of the method, reference is made to the partial description of the embodiments of the apparatus. The present invention is not limited to the specific steps and structures described above and shown in the drawings. Also, a detailed description of known process techniques is omitted herein for the sake of brevity.

The above description is only an example of the present application and is not limited to the present application. Various modifications and alterations to this application will become apparent to those skilled in the art without departing from the scope of this invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.