Precise assembly device of heat pipe for spacecraft and use method of precise assembly device

Abstract

The invention discloses a precise assembly device of a heat pipe for a spacecraft and a using method of the precise assembly device, and relates to the technical field of heat pipe assembly.The precise assembly device comprises a main working conveying frame, a heat pipe conveying frame is arranged behind the main working conveying frame, and the heat pipe conveying frame is used for conveying the heat pipe to an assembly clamping area; and the pipe fitting assembling mechanism is arranged outside the main working conveying frame. External air is pumped into the air bag through the two-way air pump, the air bag wraps the heat pipe after being inflated, special-shaped pipes can be grabbed, the air bag can be suitable for heat pipes of various shapes, the clamping and wrapping force of the air bag can provide uniform clamping force, deformation or indentation of the heat pipe due to uneven stress is avoided, the assembly precision of the heat pipe is ensured, and the production efficiency is improved. The friction force and the clamping stability between the heat pipe and the air bag are increased through the anti-skid points on the outer surface of the air bag, and the situation that the heat pipe slides in the air bag, the later heat pipe assembling efficiency is affected, and consequently the heat pipe is not well aligned with the assembling position is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of heat pipe assembly, and in particular to a precision assembly device for a heat pipe for a spacecraft and a method for using the same. Background Art

[0002] Spacecraft are devices designed and manufactured specifically for performing specific missions in outer space. They can perform a variety of functions, including scientific research, communications, Earth observation, navigation, and exploration of other planets. Heat pipes in spacecraft are an important thermal management device that are widely used to effectively conduct and distribute heat to ensure the normal operation of spacecraft under extreme temperature conditions. The assembly of heat pipes is a critical process that requires ensuring that the heat pipes can efficiently conduct heat and be tightly integrated with other components.

[0003] Most existing heat pipe assemblies are assembled automatically, and robotic arms are often used to complete the tasks of grabbing, moving and inserting heat pipes during assembly. The existing robotic arm grippers have many restrictions on the applicability of shape, size and material, and are not ideal when handling special-shaped heat pipes. In addition, due to the limited hardness of heat pipes, if the clamping force of the existing robotic arm grippers is uneven during the grabbing process, the heat pipes will be deformed and damaged. Summary of the Invention

[0004] The purpose of the present invention is to provide a precision assembly device for heat pipes for spacecraft and a method for using the same, which solves the problem that the robotic arm grippers in traditional precision assembly devices for heat pipes for spacecraft have many restrictions on the applicability of shape, size and material, and are not ideal when handling special-shaped heat pipes. In addition, due to the limited hardness of the heat pipes, the existing robotic arm grippers may cause deformation and damage to the heat pipes if the clamping force is uneven during the gripping process.

[0005] The present invention solves the above technical problems through the following technical solutions. The present invention provides a precision assembly device for a heat pipe for a spacecraft, which is characterized by comprising:

[0006] A main working conveying rack, behind which a heat pipe conveying rack is provided, and the heat pipe conveying rack is used to convey the heat pipe to the assembly clamping area;

[0007] A pipe assembly mechanism, which is installed on the outside of the main working conveyor frame and is used to screw the corresponding connecting parts of the heat pipe and the heat sink;

[0008] A robotic arm, one end of which is equipped with a clamping mechanism, the robotic arm is used to drive the clamping mechanism to change the clamping angle and position, the clamping mechanism includes a U-shaped mounting frame, a connecting frame is fixed above the U-shaped mounting frame, the connecting frame is fixedly connected to one end of the robotic arm, the clamping mechanism also includes a wrapping member, two limit retraction members, two sealing members and two clamping members, the wrapping member includes an inflatable member provided above the U-shaped mounting frame and two wrapping clamping airbags provided inside the U-shaped mounting frame;

[0009] The two limiting retraction parts are respectively arranged on the outside of the two package clamping airbags, and the limiting retraction parts are used to limit the position of the package clamping airbag after retraction. The two sealing parts are respectively arranged on one side of the two package clamping airbags, and the sealing parts are used to seal the connection between the inflatable part and the package clamping airbag. The two clamping parts are respectively arranged on one side of the two package clamping airbags, and the clamping parts are used to connect the package clamping airbag and the U-shaped mounting frame.

[0010] Preferably, the wrapping and clamping airbag includes a shaping plate, an airbag is fixed to one side of the shaping plate, and a plurality of anti-slip points are provided on the outer side of the airbag.

[0011] Preferably, the inflatable component includes a two-way air pump fixed to the inner side of the connecting frame, a PLC controller installed on one side of the U-shaped mounting frame, a pressure sensor installed on the outside of the airbag, and an electromagnetic pressure relief valve arranged above the airbag. The air outlet end of the two-way air pump is fixed with a U-shaped air duct, and the two ends of the U-shaped air duct are respectively arranged on both sides of the U-shaped mounting frame.

[0012] Preferably, the limiting and retracting component includes a plurality of limiting rods fixed to the outside of the wrapped and clamped airbag and a plurality of limiting rings fixed to the outside of the U-shaped mounting frame. The plurality of limiting rods are respectively passed through the interior of the plurality of limiting rings, and one end of the plurality of limiting rods is connected to the outside of the airbag through an elastic material.

[0013] Preferably, both sides of the U-shaped mounting frame are provided with plug-in slots, and the sealing component includes a plug-in tube fixed to one side of the forming plate and a diversion connecting tube installed inside the plug-in slot, and the diversion connecting tube is fixed to the inner side of the U-shaped air duct through a plurality of connecting strips, and a sealing groove is provided on the inner surface of the plug-in tube, and an air supply groove is provided inside the diversion connecting tube, and a hollow sealing ring is provided on the outside of the diversion connecting tube, and the hollow sealing ring is communicated with the air supply groove.

[0014] Preferably, two clamping grooves are provided on both sides of the U-shaped mounting frame, and the clamping parts include two threaded columns fixed on one side of the forming plate and internal threaded sleeves respectively threadedly connected to the outside of the two threaded columns, and the two internal threaded sleeves slide on the inner sides of the two clamping grooves respectively, and the outsides of the two internal threaded sleeves are provided with anti-slip grooves.

[0015] Preferably, an alarm is fixed on one side of the U-shaped mounting frame, and the alarm is used to promptly remind the user that the airbag needs to be replaced.

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

[0017] Step 1: Place the heat sink on the main working conveyor rack, and the heat pipe on the heat pipe conveyor rack. When the two are conveyed, the robotic 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 the anti-slip points to stably clamp the heat pipe.

[0018] Step 2: When inflating the airbag, the pressure sensor will detect the pressure value in the airbag in real time. When the pressure reaches the specified threshold that the heat pipe can withstand, the two-way 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 will be opened through the PLC controller to prevent overpressure.

[0019] Step 3: When the two-way air pump extracts the gas in the airbag, it will be guided by the limit rod and the limit ring to retract the airbag toward the forming plate to prevent the airbag from falling due to gravity, which will cause the airbag to cover the heat pipe when it is above the heat pipe conveyor rack and affect the clamping of the heat pipe;

[0020] Step 4: When the two-way air pump inflates the airbag, the airflow will be diverted through the diversion connecting pipe to the space between the diversion connecting pipe and the U-shaped air duct. The airflow will enter the hollow sealing ring through the air supply groove, so that the hollow sealing ring fits tightly in the sealing groove, ensuring the sealing effect between the airbag and the inflatable component.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] External air is drawn into the airbag through a two-way air pump. After the airbag is inflated, it will wrap around the outside of the heat pipe, which can grab special-shaped pipes and is applicable to heat pipes of various shapes. The clamping and wrapping force of the airbag can provide uniform clamping force to prevent the heat pipe from being deformed or indented due to uneven force. The anti-slip points on the outer surface of the airbag increase the friction and clamping stability between the heat pipe and the airbag, preventing the heat pipe from sliding and shifting in the airbag, affecting the assembly efficiency of the heat pipe in the later stage, and causing poor alignment of the heat pipe and the assembly position. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0024] Figure 2 Schematic diagram of the structure of the clamping mechanism of the present invention;

[0025] Figure 3A partial cross-sectional view of the clamping mechanism of the present invention;

[0026] Figure 4 for Figure 3 A magnified schematic diagram of part A in the middle;

[0027] Figure 5 for Figure 3 Schematic diagram of local splitting;

[0028] Figure 6 for Figure 5 Enlarged schematic diagram of part B in the middle.

[0029] 1. Main working conveyor rack; 2. Heat pipe conveyor rack; 3. Pipe assembly mechanism; 4. Robotic arm; 5. Clamping mechanism; 51. U-shaped mounting rack; 52. Inflatable part; 521. Two-way air pump; 522. PLC controller; 523. Pressure sensor; 524. Solenoid pressure relief valve; 525. U-shaped air duct; 53. Package clamping air bag; 531. Forming plate; 532. Air bag; 533. Anti-slip point; 54. Limit rod; 55. Limit ring; 56. Plug-in slot; 57. Diverter connecting pipe; 58. Sealing slot; 59. Air supply slot; 510. Hollow sealing ring; 511. Card mounting slot; 512. Threaded column; 513. Internal threaded sleeve; 514. Alarm; 515. Plug-in tube. DETAILED DESCRIPTION

[0030] The above and other technical features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.

[0031] The present invention provides a technical solution: a precision assembly device for heat pipes used in spacecraft, such as Figure 1-6 As shown, a precision assembly device for heat pipes for spacecraft is characterized in that it includes a main working conveying frame 1, a pipe assembly mechanism 3, a robotic arm 4 and a clamping mechanism 5. The main working conveying frame 1 conveys heat sinks connected to and installed with the heat pipes. A heat pipe conveying frame 2 is provided behind the main working conveying frame 1. The heat pipe conveying frame 2 is used to convey the heat pipes to the assembly clamping area. The pipe assembly mechanism 3 is installed on the outside of the main working conveying frame 1. The pipe assembly mechanism 3 is used to screw the corresponding connecting parts of the heat pipes and the heat sinks.

[0032] like Figure 1-6As shown, the clamping mechanism 5 is arranged at one end of the robotic arm 4, and the robotic arm 4 is used to drive the clamping mechanism 5 to change the clamping angle and position. The robotic arm 4 is arranged between the main working conveying rack 1 and the heat pipe conveying rack 2 at similar angles. The clamping mechanism 5 includes a U-shaped mounting frame 51, and a connecting frame is fixed above the U-shaped mounting frame 51. The U-shaped mounting frame 51 is fixedly connected to one end of the robotic arm 4 through the connecting frame. The clamping mechanism 5 also includes a wrapping member, which includes an inflatable member 52 arranged above the U-shaped mounting frame 51 and two wrapping clamping airbags 53 arranged on the inner side of the U-shaped mounting frame 51. The inflatable member 52 is used to inflate the inside of the wrapping clamping airbag 53 so that the wrapping clamping airbag 53 can wrap and clamp the heat pipe.

[0033] like Figure 1-6 As shown, the wrapping and clamping airbag 53 includes a shaping plate 531, the shape and size of the shaping plate 531 are adapted to the inner side of the U-shaped mounting frame 51, an airbag 532 is fixed to one side of the shaping plate 531, and a plurality of anti-slip points 533 are provided on the outer side of the airbag 532. After the airbag 532 is inflated, it wraps the heat pipe, and the anti-slip points 533 help the airbag 532 to stick and clamp the heat pipe, thereby preventing the heat pipe from sliding in the airbag 532 and affecting the later assembly effect and efficiency, resulting in poor heat pipe and Corresponding to the position alignment, the inflatable member 52 includes a two-way air pump 521 fixed to the inner side of 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 outside of the airbag 532, and an electromagnetic pressure relief valve 524 arranged above the airbag 532. The pressure threshold of the pressure sensor 523 is set in advance. When the pressure reaches the appropriate threshold, that is, the pressure value that the heat pipe can withstand, the two-way air pump 521 is turned off through the PLC controller 522, and the two-way pressure is closed. After the air pump 521 is started, when the pressure value detected by the pressure sensor 523 is greater than this threshold, a signal will be sent to the PLC controller 522, and the electromagnetic pressure relief valve 524 will be opened to discharge the excess gas in the airbag 532. The two-way air pump 521 can inflate the airbag 532 and can also extract the gas filled in the airbag 532. A U-shaped air duct 525 is fixed to the air outlet end of the two-way air pump 521. The two ends of the U-shaped air duct 525 are respectively arranged on both sides of the U-shaped mounting frame 51. An alarm 514 is fixed on one side of the U-shaped mounting frame 51. The alarm 514 is used to promptly remind the airbag 532 that it needs to be replaced. The condition for activating the alarm 514 is that after the two-way air pump 521 is started, the pressure value detected by the pressure sensor 523 is still lower than the minimum threshold within a certain period of time, then the alarm 514 is activated to sound, and timely check whether the airbag 532 is leaking due to damage and aging, or whether there is a problem with the two-way air pump 521, so that it can be repaired and replaced in time.

[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 the external air is sucked into the U-shaped air duct 525 by the two-way air pump 521. The air flow will pass through the air bag 532 to inflate the air bag 532. After the air bag 532 is inflated, it will wrap around the outside of the heat pipe. It is applicable to heat pipes of various shapes and can grab special-shaped pipes to ensure that the heat pipe and the clamping component fit tightly, 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. After reaching the specified pressure threshold that the heat pipe can withstand, the two-way air pump 521 can be turned off by the PLC controller 522. If the pressure value is still higher than the set threshold after being turned off, the PLC controller will control it. The controller 522 opens the electromagnetic pressure relief valve 524 and discharges a little of the gas inside the airbag 532 to prevent overpressure. The electromagnetic pressure relief valve 524 is closed until the pressure value inside the airbag 532 reaches a suitable threshold. When the airbag 532 is wrapped around the outside of the heat pipe, the anti-slip point 533 on the outer surface of the airbag 532 will provide friction and clamping stability between the heat pipe and the airbag 532 to prevent the heat pipe from sliding and shifting in the airbag 532, affecting the subsequent assembly effect and efficiency of the heat pipe and causing the heat pipe to be poorly aligned with the assembly position. The clamping and wrapping force of the airbag 532 can provide uniform clamping force to prevent the heat pipe from being deformed due to uneven force, thereby ensuring the assembly accuracy of the heat pipe. Quick clamping is achieved through inflation. When the heat pipe needs to be released, it can be easily released by simply releasing the gas, which is easy to operate.

[0035] like Figure 1-6 As shown, the clamping mechanism 5 also includes two limiting retraction parts, which are respectively arranged on the outside of the two wrapped clamping airbags 53. The limiting retraction parts are used to limit the position of the wrapped clamping airbag 53 after retraction to prevent the airbag 532 from falling due to gravity when it retracts. When the airbag 532 moves to the top of the heat pipe conveying rack 2 to clamp the heat pipe in the later stage, the falling airbag 532 is stacked on the heat pipe conveying rack 2 and drags, affecting the clamping effect and efficiency. The limiting retraction parts include multiple limiting rods 54 fixed to the outside of the wrapped clamping airbag 532 and multiple limiting rings 55 fixed to the outside of the U-shaped mounting frame 51. The number of limiting rods 54 can be set according to the specific size of the airbag 532, among which the two outermost limiting rods 54 should be set near the upper and lower edges of the airbag 532, and multiple limiting rods 54 are respectively passed through the inside of multiple limiting rings 55, and one end of the multiple limiting rods 54 is connected to the outside of the airbag 532 by elastic material.

[0036] When the heat pipe needs to be released, the two-way air pump 521 extracts the gas in the airbag 532. When the airbag 532 retracts, it will be guided by the limiting rod 54 and the limiting ring 55 to retract toward the shaping plate 531, preventing the airbag 532 from falling and drooping due to gravity, causing the airbag 532 to cover the heat pipe when it is above the heat pipe conveying rack 2, thereby affecting the clamping work of the heat pipe.

[0037] like Figure 1-6 As shown, both sides of the U-shaped mounting frame 51 are provided with plug-in slots 56, and the plug-in slots 56 correspond to the middle part of the shaping plate 531. The clamping mechanism 5 also includes two sealing members, which are respectively arranged on one side of the two wrapped clamping airbags 53. The sealing members are used to seal the connection between the inflatable member 52 and the wrapped clamping airbag 53 to prevent air flow from leaking and affecting the inflation efficiency of the airbag 532. The sealing member includes a plug-in tube 515 fixed to one side of the shaping plate 531 and a diversion connecting tube 57 installed inside the plug-in slot 56. The diversion connecting tube 57 is fixed to the inner side of the U-shaped air duct 525 through a plurality of connecting strips. A sealing groove 58 is provided on the inner surface of the plug-in tube 515, and a rubber layer is provided on the inner surface of the sealing groove 58. An air supply groove 59 is provided inside the diversion connecting tube 57, and the length of the diversion connecting tube 57 can be set by itself. Figure 5 As shown, the length of the diversion connecting pipe 57 is shorter than the general size of the U-shaped air duct 525, and the Figure 5 The length of the middle diversion connecting pipe 57 is set to half of that shown. The diversion connecting pipe 57 is used to divert the airflow in the U-shaped air duct 525 and guide the airflow into the air supply groove 59. A hollow sealing ring 510 is provided on the outside of the diversion connecting pipe 57, and the hollow sealing ring 510 is connected to the air supply groove 59.

[0038] When the bidirectional air pump 521 inflates the airbag 532, the airflow will be diverted through the diversion connecting tube 57. The airflow diverted between the diversion connecting tube 57 and the U-shaped air duct 525 will enter the hollow sealing ring 510 through the air supply groove 59, thereby causing the hollow sealing ring 510 to expand so that it can fit tightly in the sealing groove 58, ensuring the sealing effect between the airbag 532 and the inflatable part 52, and avoiding air leakage between the two that affects the clamping efficiency and effect.

[0039] like Figure 1-6As shown, two card slots 511 are provided on both sides of the U-shaped mounting frame 51, and the plug-in slot 56 is arranged between the two card slots 511. The clamping mechanism 5 also includes two card slots, and the two card slots are respectively provided on one side of the two package clamping airbags 53. The card slots are used to connect the package clamping airbags 53 and the U-shaped mounting frame 51, so that the airbags 53 can be quickly replaced after being damaged in the future, reducing the difficulty and time required for maintenance. The card slots include two threaded columns 512 fixed on one side of the forming plate 531 and internal threaded sleeves 513 respectively threadedly connected to the outside of the two threaded columns 512. The two internal threaded sleeves 513 slide on the inner sides of the two card slots 511 respectively, and the outsides of the two internal threaded sleeves 513 are provided with anti-slip grooves.

[0040] After the airbag 532 is aged and damaged, it can be removed from the threaded column 512 by rotating the internal threaded sleeve 513. The airbag 532 can be removed from the U-shaped mounting bracket 51. For installation, the two corresponding threaded columns 512 on the airbag 532 are inserted into the card slots 511 respectively, and then the internal threaded sleeve 513 is screwed onto the threaded column 512 from the other end of the card slot 511. The airbag 532 is easy and quick to remove and replace, and the maintenance time is short.

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

[0042] Step 1: The heat sink is placed on the main working conveyor rack 1, and the heat pipe is placed on the heat pipe conveyor rack 2. When the two are conveyed, the clamping mechanism 5 is driven by the robotic arm 4 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 to wrap around the heat pipe, which can grasp the special-shaped heat pipe and is stably clamped by the anti-slip point 533;

[0043] Step 2: When inflating the airbag 532, the pressure sensor 523 will detect the pressure value in the airbag 532 in real time. When the pressure reaches the specified threshold value for the heat pipe, the two-way air pump 521 can be turned off through the PLC controller 522. If the pressure value is higher than the set threshold, the electromagnetic pressure relief valve 524 can be opened through the PLC controller 522 to exhaust the air to prevent overpressure.

[0044] Step 3: When the two-way air pump 521 extracts the gas in the airbag 532, the airbag 532 will be guided by the limiting rod 54 and the limiting ring 55 to retract toward the shaping plate 531, so as to prevent the airbag 532 from falling due to gravity, which would cause the airbag 532 to cover the heat pipe when it is above the heat pipe conveying rack 2, thereby affecting the clamping of the heat pipe;

[0045] Step 4: When the two-way air pump 521 inflates the airbag 532, the airflow will be diverted through the diversion connecting pipe 57 to between the diversion connecting pipe 57 and the U-shaped air duct 525. The airflow will enter the hollow sealing ring 510 through the air supply groove 59, so that the hollow sealing ring 510 fits tightly in the sealing groove 58, ensuring the sealing effect between the airbag 532 and the inflatable member 52.

[0046] The above description is merely a preferred embodiment of the present invention and is intended to be illustrative rather than restrictive of the present invention. Those skilled in the art will appreciate that many changes, modifications, and even equivalents may be made to the present invention within the spirit and scope of the claims, all of which fall within the scope of protection of the present invention.

Claims

1. A precision assembly device for a heat pipe for a spacecraft, characterized in that: include: A main working conveying frame (1), a heat pipe conveying frame (2) is provided behind the main working conveying frame (1), and the heat pipe conveying frame (2) is used to convey the heat pipe to the assembly clamping area; a pipe assembly mechanism (3), the pipe assembly mechanism (3) being installed outside the main working conveying frame (1), and the pipe assembly mechanism (3) being used to screw the corresponding connection parts of the heat pipe and the heat sink; A robotic arm (4), wherein one end of the robotic arm (4) is provided with a clamping mechanism (5), the robotic arm (4) is used to drive the clamping mechanism (5) to change the clamping angle and position, the clamping mechanism (5) comprising a U-shaped mounting frame (51), a connecting frame being fixed above the U-shaped mounting frame (51), the connecting frame being fixedly connected to one end of the robotic arm (4), the clamping mechanism (5) further comprising a wrapping member, two position-limiting retraction members, two sealing members, and two clamping members, the wrapping member comprising an inflatable member (52) disposed above the U-shaped mounting frame (51) and two wrapping clamping airbags (53) disposed inside the U-shaped mounting frame (51); The two position-limiting retraction parts are respectively arranged on the outside of the two package clamping airbags (53), and the position-limiting retraction parts are used to limit the position of the package clamping airbags (53) after retraction. The two sealing parts are respectively arranged on one side of the two package clamping airbags (53), and the sealing parts are used to seal the connection between the inflatable part (52) and the package clamping airbag (53). The two clamping parts are respectively arranged on one side of the two package clamping airbags (53), and the clamping parts are used to connect the package clamping airbag (53) and the U-shaped mounting frame (51).

2. The precision assembly device for a heat pipe for a spacecraft according to claim 1, characterized in that: The wrapping and clamping airbag (53) comprises a shaping plate (531), an airbag (532) is fixed to one side of the shaping plate (531), and a plurality of anti-slip points (533) are provided on the outer side of the airbag (532).

3. The precision assembly device for a heat pipe for a spacecraft according to claim 2, characterized in that: The inflatable member (52) comprises a bidirectional air pump (521) fixed to the inner side of 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). A U-shaped air duct (525) is fixed to the air outlet end of the bidirectional air pump (521), and the two ends of the U-shaped air duct (522) are respectively arranged on both sides of the U-shaped mounting frame (51).

4. The precision assembly device for a heat pipe for a spacecraft according to claim 3, characterized in that: The limiting retraction component includes a plurality of limiting rods (54) fixed to the outside of the wrapped clamping airbag (532) and a plurality of limiting rings (55) fixed to the outside of the U-shaped mounting frame (51), the plurality of limiting rods (54) are respectively inserted into the interior of the plurality of limiting rings (55), and one end of the plurality of limiting rods (54) is connected to the outside of the airbag (532) through an elastic material.

5. The precision assembly device for a heat pipe for a spacecraft according to claim 4, characterized in that: Both sides of the U-shaped mounting frame (51) are provided with plug-in slots (56), and the sealing member comprises a plug-in tube (515) fixed to one side of the shaping plate (531) and a diversion connecting tube (57) installed inside the plug-in slot (56), the diversion connecting tube (57) being fixed to the inner side of the U-shaped air duct (525) through a plurality of connecting strips, a sealing groove (58) being provided on the inner surface of the plug-in tube (56), an air supply slot (59) being provided inside the diversion connecting tube (57), and a hollow sealing ring (510) being provided outside the diversion connecting tube (57), and the hollow sealing ring (510) being connected to the air supply slot (59).

6. The precision assembly device for a heat pipe for a spacecraft according to claim 5, characterized in that: Two clamping grooves (511) are provided on both sides of the U-shaped mounting frame (51), and the clamping member includes two threaded columns (512) fixed to one side of the shaping plate (531) and internal threaded sleeves (513) respectively threadedly connected to the outside of the two threaded columns (512). The two internal threaded sleeves (513) slide on the inner sides of the two clamping grooves (511), and the outsides of the two internal threaded sleeves (513) are provided with anti-slip grooves.

7. The precision assembly device for a heat pipe for a spacecraft according to claim 6, characterized in that: An alarm (514) is fixed to one side of the U-shaped mounting frame (51), and the alarm (514) is used to promptly remind the airbag (532) that it needs to be replaced.

8. A method for using a precision assembly device for a spacecraft heat pipe, the method being applied to the high-platform flange ball valve according to claim 7, comprising the following steps: Step 1: The heat sink is placed on the main working conveying rack (1), and the heat pipe is placed on the heat pipe conveying rack (2). When the two are conveyed, the clamping mechanism (5) is driven by the robotic arm (4) 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 to wrap it around the heat pipe. The air bag can be grasped and the heat pipe can be stably clamped by using the anti-slip point (533); Step 2: When the airbag (532) is inflated, the pressure sensor (523) detects the pressure value in the airbag (532) in real time. When the pressure threshold value specified for the heat pipe is reached, the two-way air pump (521) can be turned off through the PLC controller (522). If the pressure value is higher than the set threshold value, the electromagnetic pressure relief valve (524) is opened through the PLC controller (522) to exhaust the air to prevent overpressure. Step 3: When the two-way air pump (521) extracts the gas in the air bag (532), the air bag (532) is guided by the limiting rod (54) and the limiting ring (55) to retract toward the shaping plate (531), thereby preventing the air bag (532) from falling due to gravity, which would cause the air bag (532) to cover the heat pipe when it is above the heat pipe conveying rack (2), thereby affecting the clamping work of the heat pipe; Step 4: When the two-way air pump (521) inflates the air bag (532), the air flow will be diverted through the diversion connecting pipe (57) to the space between the diversion connecting pipe (57) and the U-shaped air duct (525), and the air flow will enter the hollow sealing ring (510) through the air supply groove (59), so that the hollow sealing ring (510) fits tightly in the sealing groove (58), ensuring the sealing effect between the air bag (532) and the inflatable member (52).

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