System and method for testing thermal deformation of elastic winding drum

A thermal deformation, reeling technology, applied in the direction of measuring heat, using thermometers directly sensitive to heat/magnetic components, electric heating devices, etc. Fast and efficient implementation, low cost, and improved stability

Pending Publication Date: 2021-05-25
SINO RES INST OF ROLL FORMING IND CAOFEIDIAN CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to maintain the vacuum degree of the vacuum tank, the vacuum pump needs to work continuously, and the vibration of the vacuum pump will be transmitted to the tested product in the tank through the tank, thus affecting the reliability of the test. In addition, the temperature rise and fall in the vacuum tank is very slow. It is also more difficult to measure, so testing in a vacuum tank does more harm than good and is not an advisable test solution

Method used

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  • System and method for testing thermal deformation of elastic winding drum
  • System and method for testing thermal deformation of elastic winding drum
  • System and method for testing thermal deformation of elastic winding drum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] A plurality of temperature sensors are arranged on the reference roll, preferably, the temperature sensors are thermocouples. like figure 2 As shown, in this embodiment, 8 temperature sensors are set on the reference roll, and from the top to the bottom are the seventh thermocouple and the eighth thermocouple set at 500mm from the top, and the 8th thermocouple set at 1200mm from the top. The fifth thermocouple and the sixth thermocouple, the third thermocouple and the fourth thermocouple arranged at 1900 mm from the top, the first thermocouple and the second thermocouple arranged at 2600 mm from the top.

[0067] The two thermocouples at the same height are symmetrically arranged, that is, they are 180° apart on the circumference, and the thermocouples on two adjacent heights are 90° apart on the circumference. In actual use, the position and number of thermocouples installed on the reference reel can be increased or decreased according to actual needs. As the thermo...

Embodiment 2

[0069] The heating mechanism includes multiple sets of heating devices, such as Pic 4-1 As shown, each group of heating devices includes: frame cart 403 , lamp array frame 402 and lamp array 401 . The light array frame 402 is installed on the frame trolley 403 and can move up and down on the frame trolley 403 to adjust the height, and the light array 401 is installed on the light array frame. The bottom of the frame car 403 is equipped with lockable rollers (commercially available products can be used).

[0070] Specifically, a plurality of threaded holes arranged in the longitudinal direction are opened on the upper part of the frame cart 403, and a plurality of threaded holes arranged in the longitudinal direction are also opened on the light array frame 402, and the bolts are sequentially passed through the lamps. The threaded holes on the array frame and the frame car are connected with nuts, and the light array frame is fixed on the frame car through bolts, and the ligh...

Embodiment 3

[0075] The lamp array 401 includes a plurality of infrared lamps 4011 and a plurality of heat-insulating lampshades 4012, the infrared lamps 4011 correspond to the heat-insulating lampshades 4012 one by one, and the structure of one infrared lamp 4011 and one heat-insulating lampshade 4012 is as follows: Figure 4-2 shown. The heat-insulating lampshade 4012 is installed on the third column in the lamp array frame 402, and an infrared lamp 4011 is installed in front of the heat-insulating lampshade 4012, that is, the heat-insulating lampshade 4012 is located between the infrared lamp 4011 and Between the light array frames 402, the heat-insulating lampshade 4012 is arranged behind the lamp tubes to ensure that the lamp tubes only heat the front and not the rear light array frames, which also ensures that the lamp array frames will not be heated due to temperature rise. And deformation. Because the deformation of the lamp array frame will lead to the change of the position of t...

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Abstract

The invention provides a system and method for testing thermal deformation of an elastic winding drum mechanism, and belongs to the technical field of spacecraft mechanisms. The system is used for testing a winding drum type extension rod mechanism, and an elastic winding drum in the winding drum type extension rod mechanism is used as a winding drum to be tested. The system comprises a reference winding drum, a heating mechanism, a position measuring mechanism and a temperature measurement and control mechanism, wherein the reference winding drum and the winding drum to be detected are identical elastic winding drums; the reference winding drum is kept in an unfolded state; the reference winding drum and the winding drum type extension rod mechanism are both arranged in the heating mechanism, and the reference winding drum and the winding drum to be tested are symmetrically arranged; the position measuring mechanism is arranged outside the heating mechanism; the temperature measurement and control mechanism comprises a temperature sensor and a temperature control device; and the temperature sensor is arranged on the reference winding drum. According to the invention, the unfolding and the unfolding precision of the to-be-measured winding drum are not influenced, and the system has the advantages of high measurement precision, simple construction, fast and efficient implementation and low cost.

Description

technical field [0001] The invention belongs to the technical field of spacecraft mechanisms, and in particular relates to a system and method for testing the thermal deformation of an elastic roll. Background technique [0002] The roll-type extension mechanism is a one-dimensional unfolding mechanism. This mechanism adopts the design of electromechanical integration, which meets the requirements of large storage ratio and large unfolding length. The unfolding length can reach 5m~10m. The unfolding length is mainly achieved by releasing the elastic roll And realize. Thermal deformation is an important indicator that affects the pointing accuracy of the mechanism. Therefore, theoretical analysis and experimental verification of the thermal deformation of the elastic reel are required, but it is currently impossible to analyze quantitatively theoretically. Therefore, it is particularly important to carry out experimental measurement of the thermal deformation of the elastic r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/00G01C15/00G01C1/02G01K1/14G01K7/02H05B3/00
CPCG01C1/02G01C15/00G01K1/14G01K7/02G01N25/00H05B3/0033
Inventor 樊俊峰韩静涛黎彪马晓燕张从发蔡铮张军刘志全孟庆平丁健罗婕苏慕萍檀傈锰
Owner SINO RES INST OF ROLL FORMING IND CAOFEIDIAN CO LTD
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