Coaxiality detection tool structure of linear displacement sensor

Abstract

The utility model belongs to the technical field of LVDT, and relates to a coaxiality detection tool structure of a linear displacement sensor. Comprising a measuring rod (1) and a positioning sleeve (2). According to the utility model, the coaxiality of the rotor assembly and the stator assembly can be ensured, namely the axis of the rotor assembly is kept on the same straight line relative to the reference axis of the stator assembly, thereby facilitating the installation and debugging of a host. The detection tool structure simulates the actual installation structure of a main engine, the rotor assembly can freely move in the stator assembly, the phenomenon of friction clamping stagnation is avoided after installation and use, the reliability of products is improved, and the detection tool structure is more suitable for aviation equipment products.

Description

TECHNICAL FIELD

[0001] The utility model belongs to LVDT technical field relates to a line displacement sensor coaxality detection frock structure. BACKGROUND

[0002] At present, there is a certain gap between the double-redundancy line displacement sensor rotor assembly and stator assembly, when the product is installed in the main machine, the rotor assembly and stator assembly are not concentric, which leads to abnormal wear of the rotor rod of the product in the working process, and the phenomenon of jamming may occur in serious cases, and the main machine fails, affecting the flight mission. SUMMARY

[0003] The utility model discloses a kind of line displacement sensor coaxality frock detection structures, the cooperation of measuring rod and positioning sleeve and line displacement sensor, guarantee that rotor assembly axis is kept on the same straight line relative to stator assembly reference axis, facilitate main machine installation and debugging, effectively avoid the phenomenon of friction jamming after installation, improve the reliability of product.

[0004] The technical scheme of the utility model is: a kind of line displacement sensor coaxality detection frock structure, including measuring rod 1 and positioning sleeve 2;Measuring rod 1 is installed in the inner hole of the small diameter end of positioning sleeve 2, the coaxality requirement of measuring rod 1 and the small diameter end inner hole of positioning sleeve 2 is 0.05-0.1, the inner threaded hole of measuring rod 1 is connected with the moving rod of line displacement sensor rotor assembly, and line displacement sensor stator assembly is installed in cooperation with positioning sleeve 2.

[0005] The measuring rod 1 is columnar structure, is equipped with threaded hole in one end, and the threaded hole length is greater than the threaded rod length of line displacement sensor rotor assembly.

[0006] The outer circle of the moving end of the measuring rod 1 is netted knurl.

[0007] The positioning sleeve 2 is the through-hole structure of outer circle with step, is equipped with the opening of symmetry in middle part, and the lower end base of line displacement sensor rotor assembly is installed in the opening.

[0008] Cooperative lead-out line positioning groove is equipped on the positioning sleeve 2.

[0009] The contact surface of the positioning sleeve 2 and measuring rod 1 is sliding fit.

[0010] The utility model has the beneficial effects that:

[0011] The coaxiality detection tool structure of the GE-31 linear displacement sensor is designed to keep the moving rod of the main product and the moving rod matched with the static component of the sensor on the same line, enhance the stability of the moving rod during operation, greatly reduce the difficulty of installation and adjustment, and avoid the friction and jamming of the moving component and the static component, improve the reliability of the product, and prolong the service life of the product. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a bottom view of the utility model;

[0013] Figure 2 It is a sectional view of the bottom view of the utility model in D-D direction;

[0014] Figure 3 It is a bottom view of the measuring rod;

[0015] Figure 4 It is a sectional view of the bottom view of the measuring rod in D-D direction;

[0016] Figure 5 It is a bottom view of the positioning sleeve;

[0017] Figure 6 It is a sectional view of the bottom view of the positioning sleeve in D-D direction;

[0018] Figure 7 It is a sectional view of the bottom view of the positioning sleeve in E-E direction;

[0019] Wherein: 1-measuring rod, 2-positioning sleeve. DETAILED DESCRIPTION

[0020] The utility model will be explained in further detail as follows. Referring to Figures 1-2 A coaxiality detection tool structure of linear displacement sensor, including measuring rod 1 and positioning sleeve 2, measuring rod 1 is installed in the inner hole of the small diameter end of positioning sleeve 2, and the coaxiality requirement of measuring rod 1 and the inner hole of the small diameter end of positioning sleeve 2 is 0.05-0.1, the moving rod of the linear displacement sensor moving component is connected with the internal thread hole of measuring rod 1, and the linear displacement sensor static component is installed in cooperation with positioning sleeve 2.

[0021] Referring to Figures 3-4 Measuring rod 1 is columnar structure, is equipped with threaded hole at one end, and the length of threaded hole is greater than the length of threaded rod of linear displacement sensor moving component.

[0022] The outer circle of the moving end of measuring rod 1 adopts the design of netted thread knurling, increases the friction force of the surface of workpiece, effectively prevents the slipping when the user grips, and enhances the appearance quality of workpiece.

[0023] Referring to Figures 5-7The positioning sleeve 2 is a through hole structure with an outer circular stepped portion, and a symmetric opening is arranged in the middle portion, which is used for limiting the movement of the base of the moving rod, and the lower end base of the linear displacement sensor rotor assembly is installed in the opening. The movement of the rotor assembly in the positioning sleeve can be observed in real time.

[0024] The positioning sleeve 2 is provided with a matching lead-out wire positioning groove, which ensures the consistency of the assembly surface of the linear displacement sensor stator assembly and the installation position of the main machine.

[0025] The contact surface of the positioning sleeve 2 and the measuring rod 1 is a sliding fit.

[0026] The positioning sleeve and the measuring rod are designed according to the size of the main machine installation interface, the size of the outer connecting rod thread of the rotor assembly, the size of the outer circle of the hole end of the stator assembly and the lead-out wire mode. The rotor assembly is installed on the measuring rod, the stator assembly is fixed by cooperating with the positioning sleeve, the measuring rod is moved, and the rotor assembly can freely move in the stator assembly in the coaxiality detection tool. Moreover, during the detection process, the rod can be calibrated according to the actual situation, and after calibration, it is statically placed for 3 hours, and then the detection tool is used for detection.

Claims

1. A coaxiality detection tool structure of a wire displacement sensor, characterized by, It comprises a measuring rod (1) and a positioning sleeve (2), the measuring rod (1) is installed in the inner hole of the small-diameter end of the positioning sleeve (2), the coaxiality of the measuring rod (1) and the inner hole of the small-diameter end of the positioning sleeve (2) is required to be 0.05-0.1, the moving rod of the linear displacement sensor mobile component is connected with the inner threaded hole of the measuring rod (1), and the linear displacement sensor static component is installed in cooperation with the positioning sleeve (2).

2. The coaxiality detection tool structure of the wire displacement sensor according to claim 1, characterized in that, The measuring rod (1) is in a columnar structure, one end of which is provided with a threaded hole, and the length of the threaded hole is greater than the length of the threaded rod of the linear displacement sensor mobile component.

3. The coaxiality detection tool structure of the wire displacement sensor according to claim 1, characterized in that, The outer circle of the moving end of the measuring rod (1) is provided with a netted thread.

4. The coaxiality detection tool structure of a wire displacement sensor according to claim 1, characterized by, The positioning sleeve (2) is a through hole structure with a stepped outer circle, the middle part of which is provided with symmetrical openings, and the lower end base of the linear displacement sensor mobile component is installed in the openings.

5. The coaxiality detection tool structure of a wire displacement sensor according to claim 1, characterized in that, The positioning sleeve (2) is provided with a positioning groove matched with the lead-out wire.

6. The coaxiality detection tool structure of a wire displacement sensor according to claim 1, characterized by, The contact surface of the positioning sleeve (2) and the measuring rod (1) is a sliding fit.

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