Device and method for testing driving torque of self-driven carbon fiber flexible rod

Abstract

The invention provides a self-driven carbon fiber flexible rod driving torque testing device and method. The self-driven carbon fiber flexible rod driving torque testing device comprises a rack 1, a hand wheel 2, a bearing seat 3, a first baffle 4, a winding shaft 5, a connecting shaft 6, a pressing mechanism 7, a coupler 8, a torque sensor 9, a support 10, a motor 11 and a second baffle 12. Wherein the rack 1 serves as a reference for installing all parts, the hand wheel 2, the winding shaft 5, the connecting shaft 6, the torque sensor 9 and the motor 11 are connected through the bearing seat 3 and the coupler 8 and are coaxial, the winding shaft 5 is used for winding the carbon fiber flexible rod, and the pressing mechanism 7 is used for pressing the carbon fiber flexible rod on the winding shaft 5 in the winding process. The torque sensor 9 is used for collecting stretching torque data of the carbon fiber flexible rod and preventing strain energy of the flexible rod from being released, and the motor 11 is used for providing winding driving force and controlling the stretching speed of the flexible rod.

Description

Technical Field

[0001] The present invention relates to the technical field of self-driven flexible rod torque testing devices, and in particular, to a self-driven carbon fiber flexible rod driving torque testing device and method, and more particularly, to a self-driven carbon fiber flexible rod driving torque testing device and method for a space extension mechanism. Background Art

[0002] Solar panels are the main energy supply for spacecraft such as satellites, spacecraft, and space stations. Adequate power sources are required for the normal operation of large spacecraft. This places high demands on the output power that solar panels can provide. The folding and unfolding ratio of solar panels (the ratio of the area when unfolded and folded) is an important parameter that directly affects the output power of solar panels. Traditional rigid solar panels have a relatively small folding and unfolding ratio. Currently, flexible solar panels can provide a larger folding and unfolding ratio, typically a winding solar blanket. Carbon fiber flexible rods can drive the solar blanket to unfold in space, and the size and stability of the driving force are the key to whether the solar blanket can be unfolded smoothly. Due to the special structure of the carbon fiber flexible rod, the size of its driving force is difficult to measure. Summary of the invention

[0003] In view of the defects in the prior art, the object of the present invention is to provide a self-driving carbon fiber flexible rod driving torque testing device and method.

[0004] A self-driven carbon fiber flexible rod driving torque test device provided by the present invention includes: a frame 1, a hand wheel 2, a bearing seat 3, a first baffle 4, a winding shaft 5, a connecting shaft 6, a clamping mechanism 7, a coupling 8, a torque sensor 9, a support 10, a motor 11 and a second baffle 12;

[0005] The hand wheel 2, the winding shaft 5, the connecting shaft 6, the torque sensor 9 and the motor 11 are connected through the coupling 8, and are installed on the frame 1 through the bearing seat 3 and the support 10;

[0006] The clamping mechanism 7 cooperates to clamp the carbon fiber flexible rod on the winding shaft 5 during the winding process;

[0007] The first baffle plate 4 is fixedly and symmetrically arranged on both sides of the winding shaft 5 ; the second baffle plate 12 is movably and symmetrically arranged on the winding shaft 5 .

[0008] Preferably, the winding shaft 5 is used to wind the carbon fiber flexible rod;

[0009] The clamping mechanism 7 is used to clamp the carbon fiber flexible rod on the winding shaft 5 during the winding process;

[0010] The torque sensor 9 is used for collecting the extension torque data of the carbon fiber flexible rod;

[0011] The motor 11 is used to provide winding driving force and control the extension speed of the flexible rod;

[0012] The first baffle 4 is used to calibrate the resistance torque of the measuring device itself;

[0013] The second baffle 12 is used to limit the axial position of the carbon fiber flexible rod.

[0014] Preferably, the first baffle 4 comprises a connection hole, through which a weight is connected, and the resistance torque of the measuring device itself is calibrated by the weight.

[0015] Preferably, the hand wheel 2, the winding shaft 5, the connecting shaft 6, the torque sensor 9 and the motor 11 are connected through the coupling 8, and are installed on the frame 1 through the bearing seat 3 and the support 10, including:

[0016] The bearing seat 3 is symmetrically arranged on both sides of the first baffle 4;

[0017] The support 10 is mounted on the inner side of the motor 11 and the torque sensor 9 respectively.

[0018] Preferably, the clamping mechanism 7 adopts a flexible clamping method, and automatically adjusts the clamping distance by arranging nitrogen springs in an annular direction.

[0019] Preferably, bearings are installed at the ends of the nitrogen springs of the clamping mechanism 7, and the bearings are arranged symmetrically.

[0020] According to a self-driving carbon fiber flexible rod driving torque test method provided by the present invention, the following steps are performed based on the self-driving carbon fiber flexible rod driving torque test device described above:

[0021] Step S1: start the motor 11, let the test device idle, and record the value of the torque sensor 9. When the value fluctuation of the torque sensor 9 is greater than the preset value during the entire rotation process, calibrate the torque sensor until the value fluctuation of the torque sensor 9 is less than the preset value during the entire rotation process;

[0022] Step S2: using a torque sensor to measure the resistance torque of the test device;

[0023] Step S3: Expand the flexible rod in radial direction and fix it to the winding shaft 5, and use the clamping mechanism to clamp the flexible rod on the winding shaft; start the motor to wind the flexible rod onto the winding shaft 5 at a uniform speed until the winding is completed; and record the torque sensor value during the whole process to obtain the torque of the rod during the whole extension process;

[0024] Step S4: Obtain the self-driving torque of the flexible rod based on the torque of the entire extension process of the rod and the resistance torque of the test device.

[0025] Preferably, the step S1 comprises: calibrating the torque sensor using a weight or a dynamometer.

[0026] Preferably, the step S4 comprises: subtracting the torque of the entire extension process of the rod from the resistance torque of the test device to obtain the self-driving torque of the flexible rod.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The clamping device of the present invention can measure the driving force of the flexible rod during the entire extension process, and the torque sensor can continuously and stably collect data during the extension process of the flexible rod; the nitrogen spring is used to provide a stable clamping force; in addition, it can be applied to flexible rods of different sizes; the test device has a simple structure and is easy to operate;

[0029] 2. The present invention can accurately measure the driving torque of the winding process of an ultra-long flexible rod. In addition, it can realize the torque measurement in both the extension and winding states. The flexible rod can be controlled to extend at a uniform speed through a stepper motor to avoid the influence of speed shock on the torque test. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0031] Figure 1 Schematic diagram of the self-driven carbon fiber flexible rod driving torque test device.

[0032] Among them, 1-frame, 2-handwheel, 3-bearing seat, 4-first baffle, 5-winding shaft, 6-connecting shaft, 7-clamping mechanism, 8-coupling, 9-torque sensor, 10-support, 11-motor, 12-second baffle. DETAILED DESCRIPTION

[0033] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0034] Example 1

[0035] According to the present invention, a self-driven carbon fiber flexible rod driving torque testing device is provided. Figure 1As shown, it includes: a frame 1, a hand wheel 2, a bearing seat 3, a first baffle 4, a winding shaft 5, a connecting shaft 6, a clamping mechanism 7, a coupling 8, a torque sensor 9, a support 10, a motor 11, and a second baffle 12;

[0036] The frame 1 is used as a reference for installing all parts; the hand wheel 2, winding shaft 5, connecting shaft 6, torque sensor 9, motor 11 are connected through the bearing seat 3, bracket 10, and coupling 8 and ensure coaxiality; the winding shaft 5 is used to wind the carbon fiber flexible rod, the clamping mechanism 7 is used to clamp the carbon fiber flexible rod on the winding shaft 5 during the winding process, the torque sensor 9 is used for collecting the stretching torque data of the carbon fiber flexible rod to prevent the strain energy of the flexible rod from being released, and the motor 11 is used to provide the winding driving force and control the stretching speed of the flexible rod; the first baffle 4 is fixedly and symmetrically arranged on both sides of the winding shaft 5; the second baffle 12 is movably and symmetrically arranged on the winding shaft 5.

[0037] The first baffle 4 includes a connection hole, through which a weight is connected, and the resistance torque of the measuring device itself is calibrated by the weight.

[0038] The hand wheel 2, the winding shaft 5, the connecting shaft 6, the torque sensor 9 and the motor 11 are connected through the coupling 8 and are installed on the frame 1 through the bearing seat 3 and the support 10, including:

[0039] Wherein, the bearing seat 3 is symmetrically arranged on both sides of the first baffle 4;

[0040] The support 10 is installed on the inner side of the motor 11 and the torque sensor 9 respectively.

[0041] The clamping mechanism 7 adopts a flexible clamping method, automatically adjusts the clamping distance by arranging nitrogen springs in an annular direction, and provides a stable clamping force;

[0042] Among them, a bearing is installed at the end of the nitrogen spring of the clamping mechanism 7 to reduce the friction of the winding shaft 5 during the winding process, and the bearing is arranged symmetrically to increase the clamping stability;

[0043] A method for testing the driving torque of a self-driving carbon fiber flexible rod provided by the present invention includes:

[0044] Step 1: Start the motor 11, let the test system run idle, and record the value of the torque sensor 9. If the value of the sensor 9 fluctuates greatly during the entire rotation process, calibrate the torque sensor using a weight or a dynamometer until the sensor 9 data has no fluctuation or small fluctuation during the entire rotation process.

[0045] Step 2: After the test device is calibrated, the resistance torque of the test system is measured using the sensor;

[0046] Step 3: Expand the flexible rod in radial direction and fix it to the winding shaft 5, and use the clamping mechanism 7 to clamp the flexible rod on the winding shaft 5; start the motor to wind the flexible rod onto the shaft at a uniform speed until it is completely rolled up; and record the torque sensor value during the whole process to obtain the torque of the rod during the whole extension process;

[0047] Step 4: Subtract the torque of the entire rod extension process in step 3 from the resistance torque of the test device in step 2 to obtain the self-driving torque of the flexible rod.

[0048] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0049] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A self-driven carbon fiber flexible rod driving torque test device, characterized in that: include: A frame (1), a hand wheel (2), a bearing seat (3), a first baffle (4), a winding shaft (5), a connecting shaft (6), a clamping mechanism (7), a coupling (8), a torque sensor (9), a support (10), a motor (11) and a second baffle (12); The hand wheel (2), the winding shaft (5), the connecting shaft (6), the torque sensor (9) and the motor (11) are connected via the coupling (8) and are mounted on the frame (1) via the bearing seat (3) and the support (10); The pressing mechanism (7) cooperates to press the carbon fiber flexible rod on the winding shaft (5) during the winding process; The first baffle (4) is fixedly and symmetrically arranged on both sides of the winding shaft (5); and the second baffle (12) is movably and symmetrically arranged on the winding shaft (5).

2. The self-driven carbon fiber flexible rod driving torque testing device according to claim 1, characterized in that: The winding shaft (5) is used for winding the carbon fiber flexible rod; The pressing mechanism (7) is used to press the carbon fiber flexible rod on the winding shaft (5) during the winding process; The torque sensor (9) is used for collecting data on the extension torque of the carbon fiber flexible rod; The motor (11) is used to provide a winding driving force and control the extension speed of the flexible rod; The first baffle (4) is used to calibrate the resistance torque of the measuring device itself; The second baffle (12) is used to limit the axial position of the carbon fiber flexible rod.

3. The self-driven carbon fiber flexible rod driving torque testing device according to claim 2, characterized in that: The first baffle (4) comprises a connection hole, through which a weight is connected, and through which the resistance torque of the measuring device itself is calibrated.

4. The self-driven carbon fiber flexible rod driving torque testing device according to claim 1, characterized in that: The hand wheel (2), the winding shaft (5), the connecting shaft (6), the torque sensor (9) and the motor (11) are connected via the coupling (8) and are mounted on the frame (1) via the bearing seat (3) and the support (10), and include: The bearing seat (3) is symmetrically arranged on both sides of the first baffle (4); The support (10) is respectively mounted on the inner side of the motor (11) and on the torque sensor (9).

5. The self-driven carbon fiber flexible rod driving torque testing device according to claim 1, characterized in that: The clamping mechanism (7) adopts a flexible clamping method and automatically adjusts the clamping distance by arranging nitrogen springs in an annular direction.

6. The self-driven carbon fiber flexible rod driving torque testing device according to claim 5, characterized in that: A bearing is installed at the end of the nitrogen spring of the clamping mechanism (7), and the bearing is arranged symmetrically.

7. A method for testing the driving torque of a self-driving carbon fiber flexible rod, characterized in that: The self-driving carbon fiber flexible rod driving torque test device according to any one of claims 1 to 6 performs the following steps: Step S1: starting the motor (11), letting the test device run idle, and recording the value of the torque sensor (9); when the value fluctuation of the torque sensor (9) is greater than a preset value during the entire rotation process, calibrating the torque sensor until the value fluctuation of the torque sensor (9) is less than the preset value during the entire rotation process; Step S2: using a torque sensor to measure the resistance torque of the test device; Step S3: unfold the flexible rod in radial direction, fix it to the winding shaft (5), and use a clamping mechanism to clamp the flexible rod on the winding shaft; start the motor to wind the flexible rod onto the winding shaft (5) at a uniform speed until the winding is completed; And record the torque sensor value in the whole process to obtain the torque of the entire extension process of the pole; Step S4: Obtain the self-driving torque of the flexible rod based on the torque of the entire extension process of the rod and the resistance torque of the test device.

8. The self-driving carbon fiber flexible rod driving torque test method according to claim 7, characterized in that: The step S1 includes: calibrating the torque sensor using a weight or a dynamometer.

9. The self-driving carbon fiber flexible rod driving torque test method according to claim 7, characterized in that: The step S4 comprises: subtracting the torque of the entire extension process of the rod from the resistance torque of the test device to obtain the self-driving torque of the flexible rod.

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