CN103616619A - Polyimide film insulation inspection tool on SADA support - Google Patents

Abstract

The invention discloses a polyimide film insulation inspection tooling on the bracket of a solar sail board driving device of a spacecraft, comprising a measuring ring, an electric rubber ring, a handle and a positioning device for pressing on the polyimide film And the test lead seat, the electric rubber ring is pasted on one side of the measuring ring pressed polyimide film, and the other side of the measuring ring is provided with a handle formed by the integration of the central parts of the three grab bars. The three grab bars are respectively The mechanical fixed connection is on the measuring ring, and any position of the measuring ring is provided with a test lead holder for inserting one of the test leads of the digital multimeter. The measuring tool is in parallel relationship with the SADA contact insulating film during measurement, and the measuring tool directly acts on the SADA contact insulating film, avoiding the possibility of relative displacement between the insulating film and the SADA bracket, and can fully cover the SADA insulation at one time It is not necessary to measure the insulating film more than 20 times, which improves the inspection efficiency of the SADA insulating film.

Description

Insulation inspection tooling for polyimide film on the bracket of solar panel driving device of spacecraft

technical field

The invention belongs to a measurement tool for the assembly process of a spacecraft, and in particular relates to an insulation measurement tool for a solar array drive assembly (SADA, solar array drive assembly) support on a spacecraft.

Background technique

In order to realize the floating requirements of SADA and avoid the contact and conduction between SADA and SADA bracket mounting surface, polyimide insulating film is pasted on SADA bracket to realize the isolation between SADA and bracket. Usually, 100m polyimide film is used as the production material, and the cut insulating film cannot have cracks and gaps. Generally, the structure of the polyimide film on the SADA stent is shown in Figure 1, wherein the polyimide film on the circumference of the SADA stent has 11 holes, wherein on the lower half circle, 7 holes are arranged every 30 degrees, On the upper half circle, 4 holes are arranged symmetrically, the two holes at the bottom are respectively at 30 degrees to the two holes at the horizontal diameter circle position, and the two upper holes are at 20 degrees to the vertical diameter circle position respectively.

In the process of spacecraft assembly, it is necessary to measure the insulation resistance between the polyimide film on the SADA bracket and the SADA bracket. It is required that the resistance value of more than 20 measurement points should not be less than 1M. Generally, an ordinary multimeter is used. The original standard model test pen is used for measurement, but the original measurement method has the following disadvantages:

1) Since the SADA installation is in surface contact, the entire installation surface cannot be inspected by the method of point selection measurement, which has the characteristics of poor coverage and cannot guarantee the installation quality of the SADA insulating film. Since the SADA floating resistance has strict requirements, if this If the insulation effect does not meet the requirements, it will directly cause the floating resistance value of the subsequent SADA installation to fail to meet the requirements, resulting in the risk of repeated disassembly and assembly of the SADA;

2) When measuring, use a multimeter pen to directly contact the insulating film for measurement. The metal pen is likely to damage the insulating film during more than 20 repeated measurements, thereby increasing the risk of subsequent SADA installation work;

3) There is a force between the test pen of the multimeter and the insulating film. The measurement angle and force of the test pen during the measurement process cannot be quantitatively controlled, which may cause relative displacement between the insulating film and the SADA bracket, resulting in repeated disassembly and assembly of the insulating film. risks of;

4) The inspectors need to measure the insulating film more than 20 times, and the repetitive measurement work is time-consuming and increases the risk of operation.

Contents of the invention

Aiming at the deficiencies of the measurement methods in the prior art, a tool for measuring the resistance between the SADA bracket and the insulating film is developed, which solves the 100% full coverage inspection of the polyimide film on the SADA bracket.

The technical scheme that the present invention adopts is as follows:

The polyimide film insulation inspection tooling on the bracket of the solar sail panel driving device of the spacecraft includes a measuring ring, an electric rubber ring, a handle, a positioning device and a test lead seat for pressing on the polyimide film, and the The polyimide membrane on the circumference of the stent has 11 holes, of which 7 holes are set at intervals of 30 degrees on the lower half circle, and 4 holes are symmetrically set on the upper half circle, and the lower two holes are aligned with the horizontal diameter circle The two holes in the position are 30 degrees respectively, and the two holes above are respectively 20 degrees with the vertical diameter circle position; among them, the electric rubber ring is pasted on one side of the measuring ring to press the polyimide film, and the measuring ring is on the other side. One side is provided with a handle formed by the integral combination of the central parts of three grab bars, and the three grab bars are respectively mechanically fixed and connected to the measuring ring, and the fixed position of one of the three grab bars corresponds to the upper half circumference of the membrane The upper vertical diameter circle position, the fixed positions of the other two symmetrical grasping rods correspond to the positions 20 degrees from the horizontal diameter position of the lower half circle respectively, and any position on the lower half circle is provided with a place for inserting a digital multimeter with a test pen. One pen holder.

Further, the positioning device is a measuring ring used to press a protruding limit post on one side of the polyimide film;

Further, the three grab bars are fixedly connected to the measuring ring by screws.

Further, an inner limit lug is arranged between the screw and the measuring ring.

Among them, the measuring ring and the handle are made of aluminum alloy;

Wherein, the electric rubber ring is made of conductive tape and a 2mm thick rubber pad covering it.

Wherein, the test lead holder and the measuring ring are connected and conducted through a screw connection, and serve as an interface between the tool and one of the multimeter test leads.

Wherein, another test lead of the multimeter is connected with the cabin shell of the spacecraft.

Compared with the prior art, the present invention has the following advantages:

Compared with the previous method of measuring the resistance value on the insulating film with the test pen of a conventional digital multimeter, and using the test pen to select more than 20 measuring points on the insulating film to measure the insulation resistance value, after using this tool, it is more important for the spacecraft. Quality and safety have played a role in guaranteeing. It makes the work of inspectors to check the resistance of the insulating film simple and easy to operate, and is stable and reliable. It not only improves the detection efficiency, but also eliminates the disadvantages of the original measurement method. The advantages are as follows:

1) The polyimide film insulation inspection method on the SADA bracket is improved from the point contact method to the surface contact method, and the entire installation surface can be inspected to achieve 100% full coverage of the polyimide film on the SADA bracket, eliminating The original method cannot guarantee the installation quality of the SADA insulation film, and avoid the risk of repeated disassembly and assembly of the SADA when the floating resistance value does not meet the requirements during the subsequent SADA installation;

2) The sticking material of the measurement surface of the measurement tool is a good conductive and soft material, which eliminates the possibility of damage to the insulating film caused by the rigid metal pen in the original method of more than 20 repeated measurements;

3) The measuring tooling is in a parallel relationship with the SADA contact insulating film during measurement, and the measuring tooling directly acts on the SADA contacting insulating film, thus avoiding the possibility of relative displacement between the insulating film and the SADA bracket, and reducing the repeated disassembly and assembly of the insulating film risk;

4) The measuring tooling can inspect the SADA insulating film with full coverage at one time, and the inspectors do not need to measure the insulating film more than 20 times, which reduces the time-consuming measurement work and improves the inspection efficiency of the SADA insulating film.

Description of drawings

Fig. 1 is the dimensional figure of tested polyimide insulating film on SADA support of the present invention;

Fig. 2 is a schematic front view of the polyimide film insulation inspection tooling structure on the SADA bracket of the present invention.

Among them, 1. Limit post; 2. Rubber pad; 3. Measuring ring; 4. Inner limit ear piece; 5. Screw; 6. Handle; 7. Test lead holder.

Fig. 3 is a schematic top view of the polyimide film insulation inspection tooling structure on the SADA bracket of the present invention.

Detailed ways

The following introduces the specific implementation manner of the content of the present invention, and the content of the present invention will be further clarified through the specific implementation mode below. Of course, the following specific embodiments are described only to illustrate different aspects of the present invention, and should not be construed as limiting the scope of the present invention.

Figure 2 shows a schematic front view of the polyimide film insulation inspection tooling structure on the SADA bracket of the present invention; Figure 3 shows a schematic top view of the polyimide film insulation inspection tooling structure on the SADA bracket of the present invention. The polyimide film insulation inspection tooling on the bracket of the spacecraft solar sail panel driving device of the present invention includes a measuring ring 3, an electric rubber ring, a handle 6, and a limit post for pressing on the polyimide film 1 and test lead seat 7, the polyimide film on the circumference of the bracket has 11 holes, wherein on the lower half circle, 7 holes are arranged every 30 degrees, on the upper half circle, 4 holes are symmetrically arranged, and the bottom The two holes of the two holes and the two holes of the horizontal diameter circle position are respectively 30 degrees, and the upper two holes are respectively 20 degrees with the vertical diameter circle position; among them, the electric rubber ring is pasted on the measuring ring 3 pressure-bonded polyimide One side of the membrane and the other side of the measuring ring are provided with a handle 6 which is formed by integrating the central parts of three grabbing bars. The three grabbing bars are respectively fixed and connected to the measuring ring 3 by screws. The fixed position of one corresponds to the vertical diameter circle position on the upper half circle of the membrane, and the fixed positions of the other two symmetrical grasping bars correspond to the positions 20 degrees from the horizontal diameter position of the lower half circle respectively, and any position of the lower half circle One position is provided with a test lead base 7 for inserting one of the test leads of the digital multimeter. 1. Limiting column; 2. Rubber pad; 3. Measuring ring; 4. Inner limit ear piece; 5. Screw; 6. handle; 7. Table lead holder.

In a specific embodiment, an inner limit lug 4 is arranged between the screw and the measuring ring, and the measuring ring 3 and the handle 6 are made of aluminum alloy.

In a specific embodiment, the electrical rubber ring is made of a conductive tape and a 2 mm thick rubber pad 2 covering it.

Utilize the measuring tool of the present invention to measure the insulation of the polyimide film on the SADA support, first replace one of the test leads of the multimeter, insert it in the test lead holder of the measuring tool of the present invention, and keep the other Only the test lead is connected to the cabin shell of the spacecraft. The measuring person holds the multimeter in one hand and the tooling in the other hand, and aligns the measuring position of the SADA bracket through the limit column, so that the electric rubber ring of the tooling is closely attached to the insulating film of the SADA bracket. Combined, after directly reading the readings of the multimeter, make a judgment on the compliance of the resistance value between the SADA bracket and the insulating film.

Claims (8)

1. the insulation of the polyimide film on spacecraft solar array drive unit support checks frock, comprise for being pressed together on the measurement annulus on polyimide film, electric rubber ring, handle, locating device and test pencil seat, polyimide film on described support circumference has 11 holes, wherein on second circumference, 7 holes are every 30 degree settings, on upper semicircumference, 4 holes are symmetrical arranged, two holes of below become respectively 30 degree with two holes of horizontal diameter circumferential position, and two holes of top become respectively 20 degree with perpendicular diameter circumferential position; Wherein, electricity rubber ring sticks on a side of measuring annulus pressing polyimide film, measuring annulus opposite side is provided with by three core one of grabbing bar in conjunction with the handle forming, three grab bar respectively machinery be fixedly connected on and measure on annulus, three fixed positions of grabbing one of bar are corresponding to perpendicular diameter circumferential position on the upper semicircumference of described film, the fixed position that another two symmetries are grabbed bar corresponds respectively to the position that becomes 20 degree with the diametrical position of second circumference level, is provided with for the test pencil seat that plugs one of digital multimeter leukorrhea test pencil on arbitrary position of second circumference.

2. polyimide film insulation as claimed in claim 1 checks frock, and wherein, locating device is for measuring annulus for outstanding limited post in pressing polyimide film one side.

3. polyimide film insulation as claimed in claim 1 checks frock, wherein, grabs bar for three and is fixedly attached to and is measured on annulus by screw.

4. the insulation of the polyimide film as described in claim 1-3 any one checks frock, wherein, between screw and measurement annulus, is provided with interior spacing auricle.

5. the insulation of the polyimide film as described in claim 1-3 any one checks frock, wherein, measures annulus and handle and makes by aluminium alloy.

6. the polyimide film as described in claim 1-3 any one insulation checks frock, and wherein, electric rubber ring comprises that conductive tape and coated its thick rubber blanket of 2mm make.

7. the insulation of the polyimide film as described in claim 1-3 any one checks frock, and wherein, test pencil seat is connected and conducting by the mode of being spirally connected with measurement annulus, the interface as this frock with one of pen meter of universal meter.

8. the insulation of the polyimide film as described in claim 1-3 any one checks frock, and wherein, the shell ground, cabin of another test pencil of multimeter and spacecraft is connected.

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