A precision assembly device for a heat pipe of a spacecraft and a method of using the same

Abstract

The application discloses a precision assembling device for heat pipes of spacecrafts and a use method thereof, and relates to the technical field of heat pipe assembling, comprising: a main work conveying frame, a heat pipe conveying frame is arranged at the back of the main work conveying frame, and the heat pipe conveying frame is used for conveying heat pipes to an assembling and clamping area; and a pipe fitting assembling mechanism is arranged outside the main work conveying frame. According to the application, external air is sucked into the air bag through the bidirectional air pump, and the air bag can wrap the heat pipe outside after being inflated, and can grab special-shaped pipes, and can be suitable for heat pipes of various shapes. The clamping and wrapping force of the air bag can provide uniform clamping force, so that the heat pipe is prevented from being deformed or having indentations due to uneven stress, and the assembling precision of the heat pipe is ensured. The anti-skid points on the outer surface of the air bag increase the friction force and clamping stability between the heat pipe and the air bag, the heat pipe is prevented from sliding and shifting in the air bag, the assembling efficiency of the heat pipe in the later period is prevented from being affected, and the heat pipe is prevented from being not good and assembling position alignment.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of heat pipe assembly, in particular to a precision assembly device for a heat pipe of a spacecraft and a use method thereof. BACKGROUND

[0002] A spacecraft is a device designed and manufactured for performing specific tasks in outer space, which can perform various functions, including scientific research, communication, earth observation, navigation and exploration of other planets, etc. The heat pipe in the spacecraft is an important heat management device, which is widely used for effective heat conduction and distribution to ensure the normal operation of the spacecraft under extreme temperature conditions. The assembly of the heat pipe is a key process, which needs to ensure that the heat pipe can efficiently conduct heat and be closely combined with other components.

[0003] Most of the existing heat pipe assemblies are automated assemblies, and a robot arm is often used to complete the work of grabbing, moving and inserting the heat pipe during assembly. The existing mechanical arm gripper has many limitations in terms of shape, size and material applicability, and the effect is not ideal when processing special-shaped heat pipes. Moreover, due to the limited hardness of the heat pipe, if the clamping force is uneven during the grabbing process of the existing mechanical arm gripper, the heat pipe will be deformed and damaged. SUMMARY

[0004] The purpose of the present application is to provide a precision assembly device for a heat pipe of a spacecraft and a use method thereof, which solves the problem of the existing precision assembly device for a heat pipe of a spacecraft, i.e. the mechanical arm gripper has many limitations in terms of shape, size and material applicability, and the effect is not ideal when processing special-shaped heat pipes. Moreover, due to the limited hardness of the heat pipe, if the clamping force is uneven during the grabbing process of the existing mechanical arm gripper, the heat pipe will be deformed and damaged.

[0005] The present application solves the above technical problems by the following technical solutions. The precision assembly device for a heat pipe of a spacecraft comprises:

[0006] A main work conveying frame is provided with a heat pipe conveying frame at the rear, and the heat pipe conveying frame is used to convey the heat pipe to the assembly clamping area.

[0007] A pipe assembly mechanism is installed outside the main work conveying frame, and the pipe assembly mechanism is used to screw the corresponding connection parts of the heat pipe and the heat sink.

[0008] The utility model relates to a mechanical arm, one end of the mechanical arm is equipped with clamping mechanism, the mechanical arm is used for driving clamping mechanism changes clamping angle and position, the clamping mechanism includes the U type mounting frame, the upper fixed connection frame of U type mounting frame, the one end fixed connection of connection frame with mechanical arm, the clamping mechanism still includes the wrapping piece, two limit retraction spare, two sealing pieces and two carding spare, the wrapping piece includes the aeration part arranged in the upper of U type mounting frame and two wrapping clamping air bags arranged in the inner side of U type mounting frame,

[0009] Two limit retraction spares are arranged outside two wrapping clamping air bags respectively, and the limit retraction spare is used for limiting the position of the wrapping clamping air bag after retraction, two sealing pieces are arranged on one side of the wrapping clamping air bag respectively, and the sealing piece is used for sealing the connection of the aeration part and the wrapping clamping air bag, two carding spares are arranged on one side of the wrapping clamping air bag respectively, and the carding spare is used for connecting the wrapping clamping air bag and the U type mounting frame.

[0010] Preferably, the wrapping clamping air bag includes a shaping plate, one side of the shaping plate is fixed with an air bag, and the outer side of the air bag is provided with a plurality of anti-skid points.

[0011] Preferably, the aeration part includes a two-way air pump fixed inside the connection frame, a PLC controller arranged on one side of the U type mounting frame, a pressure sensor arranged outside the air bag, and an electromagnetic pressure relief valve arranged above the air bag, and the air outlet end of the two-way air pump is fixed with a U type air pipe, and the two ends of the U type air pipe are arranged on the two sides of the U type mounting frame.

[0012] Preferably, the limit retraction spare includes a plurality of limit rods fixed outside the wrapping clamping air bag and a plurality of limit rings fixed outside the U type mounting frame, a plurality of limit rods are respectively arranged inside a plurality of limit rings, and one end of a plurality of limit rods is connected to the outside of the air bag through an elastic material.

[0013] Preferably, the two sides of the U type mounting frame are provided with a plug-in groove, the sealing piece includes a plug-in pipe fixed on one side of the shaping plate and a shunt connecting pipe arranged inside the plug-in groove, the shunt connecting pipe is fixed to the inside of the U type air pipe through a plurality of connecting strips, the inner surface of the plug-in pipe is provided with a sealing groove, the inside of the shunt connecting pipe is provided with a blowing groove, the outside of the shunt connecting pipe is provided with a hollow sealing ring, and the hollow sealing ring is communicated with the blowing groove.

[0014] Preferably, the two sides of the U type mounting frame are provided with two clamping grooves, the clamping spare includes two threaded columns fixed on one side of the shaping plate and two internal thread sleeves respectively threadedly connected to the outside of the two threaded columns, the two internal thread sleeves are respectively slid on the inside of the two clamping grooves, and the outside of the two internal thread sleeves is provided with an anti-skid groove.

[0015] Preferably, one side of the U-shaped mounting frame is fixed with an alarm, and the alarm is used to timely remind the air bag to be replaced.

[0016] A method for using a precision assembly device of a heat pipe for a spacecraft, comprising the following steps:

[0017] Step one: the heat sink is placed on the main work conveying frame, and the heat pipe is placed on the heat pipe conveying frame. When the two are conveyed, the mechanical arm drives the clamping mechanism to move to the corresponding position of the heat pipe. The bidirectional air pump in the clamping mechanism fills the air bag with air to wrap it around the heat pipe. It can grab special-shaped heat pipes and use anti-slip points to stably clamp the heat pipes.

[0018] Step two: when the air bag is inflated, the pressure sensor will detect the pressure value in the air bag in real time. When the specified pressure threshold that the heat pipe can withstand is reached, the bidirectional air pump can be turned off through the PLC controller. If the pressure value is higher than the set threshold, the electromagnetic pressure relief valve is opened to vent the air through the PLC controller to prevent overpressure.

[0019] Step three: when the bidirectional air pump extracts the gas in the air bag, the air bag can be retracted in the direction of the shaping plate under the guidance of the limiting rod and the limiting ring, avoiding the air bag from falling down due to gravity, which may cover the heat pipe when the air bag is above the heat pipe conveying frame in the later stage, affecting the clamping work of the heat pipe.

[0020] Step four: when the bidirectional air pump inflates the air bag, the airflow is divided into the connection pipe and the U-shaped air pipe, and the airflow enters the hollow sealing ring through the air supply groove to ensure the sealing effect between the air bag and the inflation part.

[0021] The beneficial effects of the present application compared with the prior art are:

[0022] The bidirectional air pump can extract external air into the air bag, and the air bag can wrap around the heat pipe after inflation. It can grab special-shaped pipes and is suitable for various shapes of heat pipes. The clamping and wrapping force of the air bag can provide uniform clamping force, avoiding deformation or indentation of the heat pipe due to uneven stress. The anti-slip points on the surface of the air bag increase the friction force and clamping stability between the heat pipe and the air bag, avoiding the heat pipe from sliding in the air bag, affecting the assembly efficiency of the heat pipe in the later stage, and causing the heat pipe to be difficult to assemble and position. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The figure is a schematic diagram of the main structure of the present application;

[0024] Figure 2 The figure is a schematic diagram of the clamping mechanism in the present application;

[0025] Figure 3It is a partial sectional view of the clamping mechanism in the application;

[0026] Figure 4 It is Figure 3 An enlarged schematic view of A part in the application;

[0027] Figure 5 It is Figure 3 A partial exploded schematic view of the application;

[0028] Figure 6 It is Figure 5 An enlarged schematic view of B part in the application.

[0029] 1, main work conveying frame; 2, heat pipe conveying frame; 3, pipe assembly mechanism; 4, mechanical arm; 5, clamping mechanism; 51, U-shaped mounting frame; 52, inflatable part; 521, two-way air pump; 522, PLC controller; 523, pressure sensor; 524, electromagnetic pressure relief valve; 525, U-shaped air pipe; 53, wrapping clamping air bag; 531, shaping plate; 532, air bag; 533, anti-skid point; 54, limiting rod; 55, limiting ring; 56, plug-in slot; 57, shunt connecting pipe; 58, sealing groove; 59, air supply groove; 510, hollow sealing ring; 511, clamping groove; 512, threaded column; 513, internally threaded sleeve; 514, alarm; 515, plug-in pipe. DETAILED DESCRIPTION

[0030] The above and other technical features and advantages of the present application will be made more apparent by the following detailed description of the application, given in connection with the attached drawings.

[0031] The application provides a technical solution: a precision assembly device for heat pipes of spacecraft, as shown in Figures 1-6 A precision assembly device for heat pipes of spacecraft, characterized in that it comprises a main work conveying frame 1, a pipe assembly mechanism 3, a mechanical arm 4 and a clamping mechanism 5, the main work conveying frame 1 conveying heat sink plates connected and installed with heat pipes, a heat pipe conveying frame 2 is arranged at the rear of the main work conveying frame 1, the heat pipe conveying frame 2 is used to convey heat pipes to the assembly clamping area, the pipe assembly mechanism 3 is arranged outside the main work conveying frame 1, and the pipe assembly mechanism 3 is used to screw connect the heat pipes and the corresponding connecting parts of the heat sink plates.

[0032] As Figures 1-6As shown, the clamping mechanism 5 is arranged at one end of the mechanical arm 4, the mechanical arm 4 is used to drive the clamping mechanism 5 to change the clamping angle and position, the mechanical arm 4 is arranged between the main work conveying frame 1 and the heat pipe conveying frame 2 at a similar angle, the clamping mechanism 5 includes a U-shaped mounting frame 51, a connecting frame is fixed above the U-shaped mounting frame 51, the U-shaped mounting frame 51 is fixedly connected with one end of the mechanical arm 4 through the connecting frame, and the clamping mechanism 5 further includes a wrapping part, the wrapping part includes an inflation part 52 arranged above the U-shaped mounting frame 51 and two wrapping clamping air bags 53 arranged inside the U-shaped mounting frame 51, the inflation part 52 is used to inflate the inside of the wrapping clamping air bag 53, so that the wrapping clamping air bag 53 can wrap and clamp the heat pipe.

[0033] As shown, Figures 1-6 The wrapping clamping air bag 53 includes a shaping plate 531, the shape and size of the shaping plate 531 are adapted to the inside of the U-shaped mounting frame 51, one side of the shaping plate 531 is fixedly connected with an air bag 532, the outside of the air bag 532 is provided with a plurality of anti-skid points 533, the air bag 532 is inflated to wrap the heat pipe, and the anti-skid points 533 help the air bag 532 to stick and clamp the heat pipe, so as to avoid the heat pipe from sliding in the air bag 532, affecting the later assembly effect and efficiency, and causing the heat pipe to be not good and to be aligned with the corresponding position. The inflation part 52 includes a bidirectional air pump 521 fixedly arranged inside the connecting frame, a PLC controller 522 arranged on one side of the U-shaped mounting frame 51, a pressure sensor 523 arranged outside the air bag 532, and an electromagnetic pressure relief valve 524 arranged above the air bag 532. The pressure threshold of the pressure sensor 523 is set in advance, and when the appropriate threshold is reached, the heat pipe is appropriately supported, and the pressure value is closed through the PLC controller 522. When the pressure value detected by the pressure sensor 523 is greater than the threshold after the bidirectional air pump 521 is closed, a signal is sent to the PLC controller 522, and the electromagnetic pressure relief valve 524 is opened to discharge the excess gas in the air bag 532. The bidirectional air pump 521 can inflate the air bag 532 and also can exhaust the gas filled in the air bag 532. The outlet end of the bidirectional air pump 521 is fixedly connected with a U-shaped air pipe 525, the two ends of the U-shaped air pipe 525 are arranged on the two sides of the U-shaped mounting frame 51, and one side of the U-shaped mounting frame 51 is fixedly connected with an alarm 514. The alarm 514 is used to timely remind the replacement of the air bag 532. The condition for starting the alarm 514 is that when the bidirectional air pump 521 is started, the pressure value detected by the pressure sensor 523 is still lower than the minimum threshold within a certain time, and then the alarm 514 is started to emit a sound, so as to timely check whether the air bag 532 leaks due to damage and aging, or whether the bidirectional air pump 521 has a problem, so as to be timely repaired and replaced.

[0034] The clamping mechanism 5 is sent to the position of the heat pipe by the mechanical arm 4, so that the heat pipe is between the two air bags 532, and then external air is sucked into the U-shaped air pipe 525 by the bidirectional air pump 521, the airflow will pass into the air bag 532 to inflate the air bag 532, and the air bag 532 will be wrapped outside the heat pipe. It can be applied to heat pipes of various shapes, can grab special-shaped pipes, ensures the close fit of the heat pipe and the clamping part, and can avoid deformation and indentation of the heat pipe. When inflating the air bag 532, the pressure sensor 523 will detect the pressure value in the air bag 532 in real time. When the specified pressure threshold of the heat pipe is reached, the bidirectional air pump 521 can be closed by the PLC controller 522. If the pressure value is still higher than the set threshold after closing, the electromagnetic relief valve 524 can be opened by the PLC controller 522 to discharge some of the gas inside the air bag 532 to prevent overpressure. The electromagnetic relief valve 524 is closed when the pressure value in the air bag 532 reaches the appropriate threshold. When the air bag 532 is wrapped outside the heat pipe, the anti-skid points 533 on the outer surface of the air bag 532 will provide friction and clamping stability between the heat pipe and the air bag 532, preventing the heat pipe from sliding and shifting in the air bag 532, affecting the assembly effect and efficiency of the heat pipe later, causing the heat pipe to be difficult to assemble and the assembly position to be misaligned. The clamping and wrapping force of the air bag 532 can provide uniform clamping force to prevent the heat pipe from deforming due to uneven stress and ensure the assembly accuracy of the heat pipe. Rapid clamping is achieved by inflation. When the heat pipe needs to be released, it can be easily released by releasing the gas, which is simple to operate.

[0035] As shown in Figures 1-6 The clamping mechanism 5 also includes two limiting retraction members, which are respectively arranged outside the wrapping and clamping air bag 53. The limiting retraction member is used to limit the position of the wrapping and clamping air bag 53 after retraction, so as to prevent the air bag 532 from falling due to gravity when retracted. When the air bag 532 is moved above the heat pipe conveying frame 2 to clamp the heat pipe later, the clamping effect and efficiency are affected because the falling air bag 532 is stacked on the heat pipe conveying frame 2. The limiting retraction member includes a plurality of limiting rods 54 fixed outside the wrapping and clamping air bag 532 and a plurality of limiting rings 55 fixed outside the U-shaped mounting frame 51. The number of limiting rods 54 can be set according to the specific size of the air bag 532, wherein the two outermost limiting rods 54 are arranged near the upper and lower edges of the air bag 532. The plurality of limiting rods 54 are respectively arranged inside the plurality of limiting rings 55, and one end of the plurality of limiting rods 54 is connected to the outside of the air bag 532 by an elastic material.

[0036] When the heat pipe needs to be released, the bidirectional air pump 521 will extract the gas in the air bag 532, and when the air bag 532 retracts, it will retract under the guidance of the limiting rod 54 and the limiting ring 55 towards the direction of the shaping plate 531, avoiding the air bag 532 from sagging due to gravity, which will cover the heat pipe when the air bag 532 is above the heat pipe conveying frame 2, thereby affecting the clamping work of the heat pipe.

[0037] As shown in Figures 1-6 , the U-shaped mounting bracket 51 is provided with a plug-in slot 56 on both sides, which corresponds to the middle part of the shaping plate 531, and the clamping mechanism 5 further comprises two sealing members respectively arranged on one side of the wrapping clamping air bag 53, which are used to seal the connection between the inflator 52 and the wrapping clamping air bag 53, avoiding the influence of air flow on the inflation efficiency of the air bag 532, the sealing member comprises a plug-in pipe 515 fixed on one side of the shaping plate 531 and a shunt connecting pipe 57 arranged inside the plug-in slot 56, the shunt connecting pipe 57 is fixed to the inner side of the U-shaped air pipe 525 through a plurality of connecting strips, the inner surface of the plug-in pipe 515 is provided with a sealing groove 58, and the inner surface of the sealing groove 58 is provided with a rubber layer, the inside of the shunt connecting pipe 57 is provided with a blowing groove 59, and the length of the shunt connecting pipe 57 can be set as desired, as shown in Figure 5 , the length of the shunt connecting pipe 57 is shorter than the general size of the U-shaped air pipe 525, and Figure 5 , the length of the shunt connecting pipe 57 can be set to half of the length of the U-shaped air pipe 525, the shunt connecting pipe 57 is used to shunt the airflow in the U-shaped air pipe 525, so that the airflow is introduced into the blowing groove 59, and the shunt connecting pipe 57 is provided with a hollow sealing ring 510 which is in communication with the blowing groove 59.

[0038] When the bidirectional air pump 521 inflates the air bag 532, the airflow will be shunted through the shunt connecting pipe 57, and the airflow between the shunt connecting pipe 57 and the U-shaped air pipe 525 will enter the hollow sealing ring 510 through the blowing groove 59, so that the hollow sealing ring 510 expands and tightly fits in the sealing groove 58, ensuring the sealing effect between the air bag 532 and the inflator 52, avoiding air leakage between them affecting the clamping efficiency and effect.

[0039] As shown in Figures 1-6As shown, two clamping grooves 511 are formed on both sides of the U-shaped mounting frame 51, and the insertion groove 56 is arranged between the two clamping grooves 511. The clamping mechanism 5 further comprises two clamping members arranged on one side of the two wrapping clamping air bags 53. The clamping members are used to connect the wrapping clamping air bags 53 and the U-shaped mounting frame 51, so that the air bags 53 can be quickly replaced after damage, reducing the difficulty and time required for maintenance. The clamping member comprises two threaded columns 512 fixed to one side of the shaping plate 531 and two internally threaded sleeves 513 threadedly connected to the outside of the two threaded columns 512. The two internally threaded sleeves 513 are respectively slid on the inner side of the two clamping grooves 511, and the outside of the two internally threaded sleeves 513 is provided with an anti-skid groove.

[0040] When the air bag 532 is damaged, the internally threaded sleeve 513 can be rotated to be unscrewed from the threaded column 512, so that the air bag 532 can be detached from the U-shaped mounting frame 51. The corresponding two threaded columns 512 of the air bag 532 are inserted into the clamping groove 511, and the internally threaded sleeve 513 is screwed onto the threaded column 512 from the other end of the clamping groove 511. The air bag 532 can be conveniently and quickly replaced, and the maintenance time is short.

[0041] A method for using a precision assembly device of a heat pipe for a spacecraft, comprising the following steps:

[0042] Step one: the heat sink is placed on the main work conveying frame 1, and the heat pipe is placed on the heat pipe conveying frame 2. When the two are conveyed, the clamping mechanism 5 is driven by the mechanical arm 4 to move to the corresponding position of the heat pipe. The bi-directional air pump 521 in the clamping mechanism 5 fills the air bag 532 with air to wrap the heat pipe, so that the special-shaped heat pipe can be gripped and stably clamped by the anti-skid point 533.

[0043] Step two: when the air bag 532 is inflated, the pressure sensor 523 detects the pressure value in the air bag 532 in real time. When the specified pressure threshold that the heat pipe can withstand is reached, the bi-directional air pump 521 can be turned off by the PLC controller 522. If the pressure value is higher than the set threshold, the electromagnetic pressure relief valve 524 can be opened by the PLC controller 522 to release the air, so as to prevent overpressure.

[0044] Step three: when the bi-directional air pump 521 pumps out the gas in the air bag 532, the air bag 532 can be retracted towards the shaping plate 531 under the guidance of the limiting rod 54 and the limiting ring 55, so as to avoid the air bag 532 from falling down due to gravity, which may cover the heat pipe when the air bag 532 is above the heat pipe conveying frame 2, affecting the clamping work of the heat pipe.

[0045] Step four: when the bidirectional air pump 521 inflates the air bag 532, the air flow will be shunted to the shunt connecting pipe 57 and the U-shaped air pipe 525 through the shunt connecting pipe 57, and the air flow will enter the hollow sealing ring 510 through the air supply groove 59, so that the hollow sealing ring 510 tightly fits in the sealing groove 58, and the sealing effect between the air bag 532 and the inflatable part 52 is ensured.

[0046] The above description is merely preferred embodiments of the present application, only intended to explain the principle and its implementation, but not limit the present application. Those skilled in the art understand that many changes, modifications, and even equivalents can be made to the present application within the spirit and scope of the present application defined in the claims, and all will fall within the protection scope of the present application.

Claims

1. A precision assembly device for a heat pipe for a spacecraft, characterized by, Include: The rear of the main work conveying frame (1) is provided with a heat pipe conveying frame (2) for conveying heat pipes to the assembly clamping area; Pipe assembly mechanism (3), the pipe assembly mechanism (3) is installed outside the main work conveying frame (1), the pipe assembly mechanism (3) is used for screwing the corresponding connecting parts of heat pipe and fin; Mechanical arm (4), one end of the mechanical arm (4) is provided with a clamping mechanism (5), the mechanical arm (4) is used to drive the clamping mechanism (5) to change the clamping angle and position, the clamping mechanism (5) includes a U-shaped mounting frame (51), a connecting frame is fixed above the U-shaped mounting frame (51), the connecting frame is fixedly connected with one end of the mechanical arm (4), the clamping mechanism (5) further includes a wrapping piece, two limiting retraction pieces, two sealing pieces and two clamping pieces, the wrapping piece includes an inflation piece (52) arranged above the U-shaped mounting frame (51) and two wrapping clamping air bags (53) arranged inside the U-shaped mounting frame (51); Two limiting retraction pieces are arranged outside the two wrapping clamping air bags (53) respectively, the limiting retraction piece is used to limit the position of the wrapping clamping air bag (53) after retraction, two sealing pieces are arranged on one side of the two wrapping clamping air bags (53) respectively, the sealing piece is used to seal the connection between the inflation piece (52) and the wrapping clamping air bag (53), two clamping pieces are arranged on one side of the two wrapping clamping air bags (53) respectively, and the clamping piece is used to connect the wrapping clamping air bag (53) and the U-shaped mounting frame (51); The wrapping clamping air bag (53) includes a shaping plate (531), one side of the shaping plate (531) is fixedly connected with an air bag (532), and a plurality of anti-skid points (533) are arranged on the outer side of the air bag (532); The inflation piece (52) includes a bidirectional air pump (521) fixed inside the connecting frame, a PLC controller (522) installed on one side of the U-shaped mounting frame (51), a pressure sensor (523) installed on the outer side of the air bag (532), and an electromagnetic pressure relief valve (524) arranged above the air bag (532), the outlet end of the bidirectional air pump (521) is fixedly connected with a U-shaped air pipe (525), and the two ends of the U-shaped air pipe (525) are arranged on the two sides of the U-shaped mounting frame (51) respectively; The limiting retraction piece includes a plurality of limiting rods (54) fixed outside the wrapping clamping air bag (53) and a plurality of limiting rings (55) fixed outside the U-shaped mounting frame (51), a plurality of limiting rods (54) are respectively arranged inside a plurality of limiting rings (55), and one end of a plurality of limiting rods (54) is connected to the outside of the air bag (532) through an elastic material.

2. The precision fitting device for a heat pipe of a spacecraft according to claim 1, characterized by, Both sides of the U-shaped mounting frame (51) are provided with plug-in grooves (56), the sealing element comprises a plug-in pipe (515) fixed to one side of the shaping plate (531) and a shunt connecting pipe (57) arranged in the plug-in groove (56), the shunt connecting pipe (57) is fixed to the inner side of the U-shaped air pipe (525) through a plurality of connecting strips, the inner surface of the plug-in pipe (515) is provided with a sealing groove (58), the inside of the shunt connecting pipe (57) is provided with a air supply groove (59), and the outside of the shunt connecting pipe (57) is provided with a hollow sealing ring (510) in communication with the air supply groove (59).

3. The precision assembly device for a heat pipe of a spacecraft according to claim 2, characterized by, Both sides of the U-shaped mounting frame (51) are provided with two clamping grooves (511), the clamping element comprises two threaded columns (512) fixed to one side of the shaping plate (531) and two internal thread sleeves (513) respectively threadedly connected to the outside of the two threaded columns (512), and the two internal thread sleeves (513) are respectively slid on the inner sides of the two clamping grooves (511).

4. The precision assembly device for a heat pipe of a spacecraft according to claim 3, characterized by The U-shaped mounting frame (51) is fixed with an alarm (514) on one side, and the alarm (514) is used for timely reminding that the air bag (532) needs to be replaced.

5. A method for using a precision assembly device for heat pipes of a spacecraft, the method being applied to the precision assembly device for heat pipes of a spacecraft according to claim 4, comprising the following steps: Step one: the heat dissipation fin is placed on the main work conveying frame (1), the heat pipe is placed on the heat pipe conveying frame (2), when the two are conveyed, the mechanical arm (4) drives the clamping mechanism (5) to move to the corresponding position of the heat pipe, the bidirectional air pump (521) in the clamping mechanism (5) fills the air bag (532) with air flow to wrap the heat pipe and grab the special-shaped heat pipe, and the anti-slip point (533) is used to stably clamp the heat pipe; Step two: when the air bag (532) is inflated, the pressure sensor (523) detects the pressure value in the air bag (532) in real time, after the specified pressure threshold value borne by the heat pipe is reached, the bidirectional air pump (521) is closed through the PLC controller (522), if the pressure value is higher than the set threshold value, the electromagnetic pressure relief valve (524) is opened to exhaust through the PLC controller (522), so as to prevent overpressure phenomenon; Step three: when the bidirectional air pump (521) pumps out the gas in the air bag (532), the air bag (532) can be retracted towards the shaping plate (531) under the guidance of the limiting rod (54) and the limiting ring (55), so as to avoid the air bag (532) from falling down due to gravity, which covers the heat pipe when the air bag (532) is above the heat pipe conveying frame (2) in the later period, and affects the clamping work of the heat pipe. Step four: when the bidirectional air pump (521) inflates the air bag (532), the airflow will be shunted through the shunt connecting pipe (57) between the shunt connecting pipe (57) and the U-shaped air pipe (525), and the airflow will enter the hollow sealing ring (510) through the air supply groove (59), so that the hollow sealing ring (510) tightly fits in the sealing groove (58), ensuring the sealing effect between the air bag (532) and the inflatable part (52).

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