Rocket relief valve centering assembly device and relief valve mounting method

Abstract

The application provides a kind of automatic installation device of launch vehicle relief valve, through elastic device, locking half clamping device, effectively realize the automatic suspension of relief valve and tee pipe combination and assembly docking, the vertical direction of fixed screw nut pair mechanism after fixed replaces the person who needs to drag relief valve combination outside cabin body.Compared with the prior art, the installation device of relief valve first guarantees the installation position of relief valve, the uniformity of flange surface docking and the accuracy of relief valve venting port centring and perpendicularity, then tightens and fixes the docking bolt nut of relief valve flange surface, the screw nut pair mechanism in three directions greatly improves the installation accuracy and avoids the matching error of operator.The second breakthrough of the application is that the motor is connected with the motion platform through the screw nut pair to complete the driving of the motion platform, so as to ensure that the gap of flange surface is uniform, the accuracy error of relief valve venting port centring and perpendicularity is within 1mm.

Description

Technical Field

[0001] This invention belongs to the field of mechanical design and manufacturing technology, and relates to a rocket safety overflow valve centering assembly device and a safety overflow valve installation method. Background Technology

[0002] During final assembly, the installation of the safety overflow valve requires the coordinated efforts of three people. The valve has two simultaneously rotatable flanges, and the installation accuracy is ensured by adjusting these flanges and the valve's downward direction. Current installation methods rely on three people simultaneously: one to hold the valve, one to measure, and one to install bolts and nuts. The limited operating space makes the process complex and cumbersome, requiring close cooperation to guarantee accuracy. Existing equipment is limited in function, providing only auxiliary support during installation. The high precision requirements and confined space significantly reduce the practicality of existing equipment, failing to meet the demands of high-density launches and rapid, high-precision installation. Furthermore, the three-person coordination is prone to errors, affecting installation accuracy and increasing time and labor costs. Moreover, the limited scope and high cost of existing equipment lead to significant resource waste, contradicting national energy conservation and environmental protection principles. The purpose of this invention is to overcome the shortcomings of existing technologies and provide an automated and easy-to-operate safety overflow valve installation device. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to overcome the shortcomings of the prior art and provide an automated and easy-to-operate safety overflow valve installation device.

[0004] An automated installation device for a launch vehicle safety overflow valve according to the present invention includes a docking platform (1), a first linear guide rail seat (21), a first linear guide rail (22), a first linear guide slider (23), a first lead screw and nut pair (24), a first stepper motor (25), a first sliding platform (3), a second lead screw and nut pair (41), a second stepper motor (42), a second linear guide rail seat (43), a second linear guide rail (44), a second linear guide slider (45), a second sliding platform (5), a spring device (61), a first locking half-clamp (621), a second locking half-clamp (622), a third locking half-clamp (623), a third stepper motor (71), a third sliding platform (72), and a frustum support rod (73); wherein,

[0005] The second linear guide rail seat (43), the second lead screw nut pair (41), and the No. 2 stepper motor (42) are fixed to the docking platform (1) by bolts. The second linear guide rail (44), the second linear guide slider (45), and the second lead screw nut pair (41) are connected to the second sliding platform (5) by bolts. The first linear guide rail seat (21), the first linear guide rail (22), the first lead screw nut pair (24), and the No. 1 stepper motor (25) are fixed to the second sliding platform (5) by bolts. The first linear guide slider (23) and the first lead screw nut pair (24) are connected to the first sliding platform (3) by bolts. The No. 1 lock The locking half-clamp (621), the second locking half-clamp (622), and the third locking half-clamp (623) are installed on the truncated cone inclined surface of the truncated cone support rod (73). The elastic device (61) is used to pull the three locking half-clamps with springs after the locking half-clamps are installed on the truncated cone inclined surface, so that the locking half-clamps can be combined into a circle. When the locking switch is pressed, the third stepper motor (71) rotates forward, the truncated cone support rod (73) rotates, so that the third sliding platform (72) moves downward, pushing the locking half-clamps downward so that the locking half-clamps become larger and support the vent of the safety overflow valve, so that the safety overflow valve and the three-way pipe assembly are suspended and fixed.

[0006] Preferably, when the locking half-clamping device supports the vent of the safety overflow valve, the limiting device on the truncated cone support rod (73) will restrict the locking half-clamping device from becoming larger, so that the vent of the safety overflow valve will not be subjected to stress caused by the excessive expansion of the locking half-clamping device, thus playing a role in protecting product safety and quality.

[0007] Preferably, the operator can measure the gap between the tee flange and the tank flange, thereby adjusting the No. 3 stepper motor (71) to continue rotating forward, so that the safety overflow valve and the tee assembly can continue to move downward, ensuring that the gap between the tee flange and the tank flange is uniformly and perfectly fitted around the perimeter, and improving the installation accuracy of the mating surface.

[0008] Preferably, when the forward and backward movement switch is pressed, the No. 2 stepper motor (42) reverses forward and backward, pushing the second lead screw nut pair (41) to move forward and backward, so that the second linear guide slider (45) moves forward and backward at the same time, so that the second sliding platform (5) completes the forward and backward movement, thereby enabling the safety overflow valve and the three-way pipe assembly to complete the forward and backward movement.

[0009] Preferably, both the second linear guide slider (45) and the second lead screw nut pair (41) have limit devices to ensure the safety of the second sliding platform (5) of the safety overflow valve installation device during operation.

[0010] Preferably, when the left and right movement switch is pressed, the No. 1 stepper motor (25) rotates in both directions, pushing the first lead screw nut pair (24) to move left and right, and the first linear guide slider (23) moves left and right at the same time, so that the first sliding platform (3) completes the left and right movement, thereby enabling the safety overflow valve and the three-way pipe assembly to complete the left and right movement.

[0011] Preferably, the operator can measure the gap between the flange face of the tee pipe and the flange face of the safety overflow valve, as well as the accuracy of the alignment and perpendicularity of the safety overflow valve vent, thereby adjusting the forward and reverse rotation of the No. 1 stepper motor (25) and the No. 2 stepper motor (42) so that the safety overflow valve and the tee pipe assembly can move forward, backward, left, and right; ensuring that the gap between the flange face of the tee pipe and the flange face of the safety overflow valve is uniformly and perfectly fitted around the perimeter, and that the accuracy error of the alignment and perpendicularity of the safety overflow valve vent is within 1mm, then the No. 1 stepper motor (25) and the No. 2 stepper motor (42) can be closed.

[0012] Preferably, after the operator finishes installation, he presses the unlock switch, the No. 3 stepper motor (71) reverses, the truncated cone support rod (73) rotates, causing the third sliding platform (72) to move upward, pushing the locking half-locking device upward, causing the locking half-locking device to become smaller, thereby releasing the vent of the safety overflow valve, and separating the safety overflow valve installation device from the safety overflow valve assembly.

[0013] This invention also provides a method for installing a rocket safety overflow valve, characterized by the following steps:

[0014] Step 1: Measure the temperature and humidity of the final assembly plant environment to ensure that the valves and devices are not affected during use;

[0015] Step 2: Install the automated installation device for the safety overflow valve at the air vent of the launch vehicle's safety overflow valve cabin through the threaded holes on docking platform 1;

[0016] Step 3: Slowly insert the An Yi valve and the three-way assembly into the locking half-clamping device to ensure that the valve's venting port is undamaged;

[0017] Step 4: After pressing the locking switch, the locking half-locking device moves downward, making the locking half-locking device larger and thus supporting the vent of the safety overflow valve, so that the safety overflow valve and the three-way pipe assembly are suspended and fixed, ensuring that the safety overflow valve and the three-way pipe assembly do not collide with the housing, etc.

[0018] Step 5: Press the forward and backward movement switch to make the overflow valve and the three-way pipe assembly move forward and backward; when the left and right movement switch is pressed, the overflow valve and the three-way pipe assembly move left and right; at this time, the operator can measure the gap between the flange face of the three-way pipe and the flange face of the overflow valve, and the accuracy of the centering and perpendicularity of the overflow valve vent, thereby adjusting the forward and reverse rotation of stepper motor 1 (25) and stepper motor 2 (42) so that the overflow valve and the three-way pipe assembly can move forward, backward, left and right; ensure that the gap between the flange face of the three-way pipe and the flange face of the overflow valve is uniform and perfectly fitted around the perimeter, and that the accuracy error of the centering and perpendicularity of the overflow valve vent is within 1mm, then stepper motor 1 (25) can be turned off. 5 and the No. 2 stepper motor (42); after the motors in the three directions are adjusted, the No. 1 stepper motor 25, the No. 2 stepper motor (42) and the No. 3 stepper motor (71) are turned off. The operator begins to install, tighten and fix the bolts between the flange face of the tee pipe and the flange face of the safety overflow valve and between the flange face of the tee pipe and the flange face of the storage tank; after the operator finishes the installation, press the unlock switch, the No. 3 stepper motor (71) reverses, the truncated cone support rod (73) rotates, so that the third sliding platform (72) moves upward, pushes the locking half-clamping device to move upward, so that the locking half-clamping device becomes smaller, thereby loosening the vent of the safety overflow valve, so that the safety overflow valve installation device is separated from the safety overflow valve assembly;

[0019] Step 6: After installation, ensure that the distance from the overflow valve vent to the bulkhead meets the following two conditions: 1. Vertical distance: The vertical distance from the overflow valve vent to the outer bulkhead is 20-35mm; 2. Alignment requirement: The deviation of the centerline between the overflow valve vent and the bulkhead vent does not exceed 2mm; If the above conditions are met, the overflow valve installation accuracy is considered to be satisfactory, and the bolts on docking platform 1 can be removed, thus removing the overflow valve installation automation device.

[0020] An automated installation device for an overflow valve was designed using the principles of a lead screw and nut pair and a linear guide rail. Before installing the overflow valve, the device is first bolted to the vent of the overflow valve on the outer wall of the cabin. Then, the overflow valve and the three-way pipe assembly are brought into the rocket cabin, and the vent of the overflow valve body is inserted into the spring mechanism and locking half-clamp assembly of this device. Pressing the locking button switch causes the stepper motor of the frustum support rod to rotate forward, causing the third sliding platform to move downward. The third sliding platform pushes the locking half-clamp assembly, causing it to gradually enlarge and support the inner wall of the overflow valve vent, thus fixing the overflow valve to the locking half-clamp assembly. Simultaneously, the overflow valve installation device is vertically installed on the outer wall of the cabin and locked in place, ensuring the verticality of the overflow valve. At this time, stepper motors 1 and 2 are activated, causing the first and second lead screw and nut pairs to move. This adjusts the uniformity of the gap between the two movable flange faces, ensuring precise alignment between the flange face of the overflow valve and the flange face of the tee pipe, and between the flange face of the tee pipe and the flange face of the storage tank. This invention achieves automated suspension fixing and assembly docking of the overflow valve through the principle of lead screw and nut pairs, a spring device, and a locking half-clamping device. The device first ensures the installation position of the overflow valve, the uniformity of the flange face alignment, and the accuracy of the centering and perpendicularity of the overflow valve's vent. Then, the connecting bolts and nuts of the overflow valve flange face are tightened and fixed. The entire operation is achieved via buttons, making it convenient. In confined spaces, it reduces the number of personnel holding the overflow valve and those measuring, avoiding errors in coordination between operators. This allows one operator to install the overflow valve, greatly saving manpower and time. Furthermore, it allows operators to easily overcome difficulties in achieving proper assembly accuracy, while the limiting device ensures product safety.

[0021] This invention relates to an automated installation device for a launch vehicle overflow valve, which has been widely used in final assembly production. This automated installation device is convenient to operate, safe and reliable, and can adjust the position of the overflow valve according to different housing structures. It also effectively achieves precise installation of the overflow valve, demonstrating excellent practicality and significant potential for widespread application. To address the aforementioned problems, the purpose of this invention is to overcome the shortcomings of existing technologies and provide an automated and easy-to-operate overflow valve installation device. This invention effectively achieves automated suspension fixing and assembly docking of the overflow valve and the three-way pipe assembly through a spring-loaded device and a locking half-clamping device. After fixing, the vertical screw-nut pair mechanism replaces the need for personnel to hold the overflow valve assembly outside the cabin. Compared with existing methods of measuring and assembling simultaneously, this invention uses the overflow valve installation device to first ensure the installation position of the overflow valve, the uniformity of the flange face mating, and the accuracy of the centering and verticality of the overflow valve vent. Then, the mating bolts and nuts on the overflow valve flange face are tightened and fixed. The three-directional screw-nut pair mechanism greatly improves the installation accuracy and avoids operator error. The second major breakthrough of this invention lies in the fact that the motor is connected to the motion platform via a lead screw and nut pair to drive the platform, while a slide rail and slider mechanism enables the platform to follow the movement, ensuring the movement of the safety overflow valve installation device in three directions. This guarantees uniform flange clearance, centering of the safety overflow valve's vent, and a perpendicularity accuracy within 1mm. The precise lead screw and nut pair mechanism replaces the need for two operators to simultaneously measure and tighten bolts during forward, backward, left, and right movements. Furthermore, the entire operation is controlled via buttons, making it convenient and reducing the need for personnel to hold the safety overflow valve or perform measurements, especially in confined spaces. This avoids errors in coordination between operators, allowing a single operator to install the safety overflow valve, significantly saving manpower and time. Operators can easily overcome the difficulties of operating in confined spaces while ensuring their personal safety. It also allows operators to easily overcome difficulties related to insufficient assembly precision, and the limit device design comprehensively guarantees product quality and safety. This invention possesses excellent practicality and significant potential for widespread application. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the safety overflow valve docking platform structure according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the AnYi live door locking interface according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the safety overflow valve installation device according to an embodiment of the present invention;

[0025] Figure label:

[0026] 1. Docking platform; 21. First linear guide rail seat; 22. First linear guide rail; 23. First linear guide slider; 24. First lead screw and nut pair; 25. Stepper motor 1; 3. First sliding platform; 41. Second lead screw and nut pair; 42. Stepper motor 2; 43. Second linear guide rail seat; 44. Second linear guide rail; 45. Second linear guide slider; 5. Second sliding platform; 61. Elastic device; 621. Locking half-clamp 1; 622. Locking half-clamp 2; 623. Locking half-clamp 3; 71. Stepper motor 3; 72. Third sliding platform; 73. Frustum support rod. Detailed Implementation

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] The value of this invention lies in its automation, ease of operation, and stability and reliability. This invention is composed of a docking platform 1, a first linear guide rail seat 21, a first linear guide rail 22, a first linear guide slider 23, a first lead screw and nut assembly 24, a stepper motor 25, a first sliding platform 3, a second lead screw and nut assembly 41, a stepper motor 42, a second linear guide rail seat 43, a second linear guide rail 44, a second linear guide slider 45, a second sliding platform 5, an elastic device 61, a locking half-clamp 621, a locking half-clamp 622, a locking half-clamp 623, a stepper motor 71, a third sliding platform 72, and a frustum support rod 73, among other components.

[0029] The main body of the overflow valve installation device is fixed to the vent flange of the rocket cabin overflow valve via the docking platform 1. The No. 3 stepper motor 71 is fixed to the top of the first sliding platform 3. The frustum support rod 73 is a frustum structure connected to a lead screw. The third sliding platform 72 is mounted on the lead screw of the frustum support rod 73. The No. 1 locking half-clamp 621, the No. 2 locking half-clamp 622, and the No. 3 locking half-clamp 623 are mounted on the frustum inclined surface of the frustum support rod 73. The elastic device 61 is used to hold the three locking half-clamps in place with springs after they are mounted on the frustum inclined surface, so that the locking half-clamp device can be assembled into a circle. When the locking switch is pressed, the No. 3 stepper motor 71 rotates forward, and the truncated cone support rod 73 rotates, causing the third sliding platform 72 to move downward. This pushes the locking half-clamping device downward, causing it to enlarge and thus support the vent of the overflow valve, suspending and fixing the overflow valve and the three-way pipe assembly in mid-air. When the locking half-clamping device supports the vent of the overflow valve, the limiting device on the truncated cone support rod 73 restricts the enlargement of the locking half-clamping device, preventing excessive stress on the vent of the overflow valve and protecting product safety and quality. At this time, the operator can measure the gap between the three-way pipe flange and the tank flange, and adjust the No. 3 stepper motor 71 to continue rotating forward, allowing the overflow valve and the three-way pipe assembly to continue moving downward. Once the gap between the three-way pipe flange and the tank flange is uniformly and perfectly fitted around the perimeter, the No. 3 stepper motor 71 can be closed.

[0030] The second linear guide rail seat 43, the second lead screw and nut assembly 41, and the second stepper motor 42 are bolted to the docking platform 1. The second linear guide slider 45 and the second lead screw and nut assembly 41 are bolted to the second sliding platform 5. When the forward / backward movement switch is pressed, the second stepper motor 42 reverses direction, pushing the second lead screw and nut assembly 41 forward and backward, causing the second linear guide slider 45 to move forward and backward simultaneously, allowing the second sliding platform 5 to complete forward and backward movement, thus enabling the safety overflow valve and the three-way pipe assembly to complete forward and backward movement. Both the second linear guide slider 45 and the second lead screw and nut assembly 41 have limit devices to ensure the safety of the second sliding platform 5 of the safety overflow valve installation device during operation. The first linear guide rail seat 21, the first lead screw and nut assembly 24, and the first stepper motor 25 are bolted to the second sliding platform 5. The first linear guide slider 23 and the first lead screw and nut assembly 24 are bolted to the first sliding platform 3. When the left / right movement switch is pressed, the No. 1 stepper motor 25 rotates forward and reverse, pushing the first lead screw and nut assembly 24 to move left and right. Simultaneously, the first linear guide slider 23 moves left and right, allowing the first sliding platform 3 to move left and right, thus enabling the safety overflow valve and tee assembly to move left and right. Both the first linear guide slider 23 and the first lead screw and nut assembly 24 have limit devices to ensure the safety of the first sliding platform 3 of the safety overflow valve mounting device during operation. At this time, the operator can measure the gap between the tee flange face and the safety overflow valve flange face, as well as the alignment and perpendicularity accuracy of the safety overflow valve's vent, thereby adjusting the forward and reverse rotation of the No. 1 stepper motor 25 and the No. 2 stepper motor 42, allowing the safety overflow valve and tee assembly to move forward, backward, left, and right. Ensure a uniform and perfect fit between the tee flange and the overflow valve flange. The alignment and perpendicularity accuracy of the overflow valve's vent should be within 1mm before closing stepper motors 25 (No. 1) and 42 (No. 2). After adjusting all three motors, close stepper motors 25 (No. 1), 42 (No. 2), and 71 (No. 3). The operator then installs, tightens, and holds the bolts between the tee flange and the overflow valve flange, and between the tee flange and the tank flange. After installation, press the unlock switch. Stepper motor 71 reverses, and the truncated cone support rod 73 rotates, causing the third sliding platform 72 to move upwards. This pushes the locking half-clamping device upwards, reducing its size and releasing the overflow valve's vent, thus separating the overflow valve mounting device from the overflow valve assembly.

[0031] This invention provides a simple, convenient, safe, and reliable overflow valve installation device. The device can be adjusted to the desired overflow valve position and effectively achieves precise valve docking, demonstrating excellent practicality and significant potential for widespread adoption. The purpose of this invention is to overcome the shortcomings of existing technologies and provide an automated and easy-to-operate overflow valve installation device. The motor in this invention is connected to the motion platform via a screw and nut assembly to drive the platform. A slide rail and slider mechanism enables the motion platform to follow the movement, ensuring the overflow valve installation device moves in three directions. This guarantees uniform flange clearance, alignment of the overflow valve vent, and a verticality accuracy within 1mm. The precise screw and nut assembly eliminates the need for two operators to simultaneously measure and tighten bolts during forward, backward, left, and right movements. The locking half-clamp device effectively suspends and fixes the overflow valve and tee pipe assembly in mid-air. After fixing, the vertical screw and nut assembly eliminates the need for personnel to hold the overflow valve assembly outside the cabin. The limit device design also comprehensively ensures product quality and safety. Furthermore, the entire operation is accomplished through buttons, making it convenient and allowing operators to easily overcome the difficulties of operating in confined spaces, while ensuring the personal safety of the operators.

[0032] The value of this invention lies in its automation, ease of operation, and stability and reliability. This invention is composed of a docking platform 1, a first linear guide rail seat 21, a first linear guide rail 22, a first linear guide slider 23, a first lead screw and nut assembly 24, a stepper motor 25, a first sliding platform 3, a second lead screw and nut assembly 41, a stepper motor 42, a second linear guide rail seat 43, a second linear guide rail 44, a second linear guide slider 45, a second sliding platform 5, an elastic device 61, a locking half-clamp 621, a locking half-clamp 622, a locking half-clamp 623, a stepper motor 71, a third sliding platform 72, and a frustum support rod 73, among other components. The docking platform 1 is bolted to the vent flange of the rocket cabin's overflow valve. The stepper motor 71 is fixed to the top of the first sliding platform 3. The frustum support rod 73 is a frustum structure connected to a lead screw. The third sliding platform 72 is mounted on the lead screw of the frustum support rod 73. The No. 1 locking half-clamp 621, the No. 2 locking half-clamp 622, and the No. 3 locking half-clamp 623 are installed on the inclined surface of the frustum of the frustum support rod 73. The elastic device 61 is used to hold the three locking half-clamps in place with springs after they are installed on the inclined surface of the frustum, so that the locking half-clamp devices can be combined into a circle. When the locking switch is pressed, the No. 3 stepper motor 71 rotates forward, the frustum support rod 73 rotates, causing the third sliding platform 72 to move downward, pushing the locking half-clamp devices downward, making the locking half-clamp devices larger and thus supporting the vent of the safety overflow valve. When the locking half-clamp devices support the vent of the safety overflow valve, the limiting device on the frustum support rod 73 will limit the expansion of the locking half-clamp devices, so that the vent of the safety overflow valve will not be subjected to excessive stress caused by the expansion of the locking half-clamp devices, thus protecting the safety and quality of the product. The second linear guide rail seat 43, the second lead screw and nut assembly 41, and the second stepper motor 42 are bolted to the docking platform 1. The second linear guide slider 45 and the second lead screw and nut assembly 41 are bolted to the second sliding platform 5. When the forward / backward movement switch is pressed, the second stepper motor 42 reverses direction, pushing the second lead screw and nut assembly 41 to move forward and backward, causing the second linear guide slider 45 to move forward and backward simultaneously, allowing the second sliding platform 5 to complete forward and backward movement. Both the second linear guide slider 45 and the second lead screw and nut assembly 41 have limit devices to ensure the safety of the second sliding platform 5 of the safety overflow valve installation device during operation. The first linear guide rail seat 21, the first lead screw and nut assembly 24, and the first stepper motor 25 are bolted to the second sliding platform 5. The first linear guide slider 23 and the first lead screw and nut assembly 24 are bolted to the first sliding platform 3.When the left / right movement switch is pressed, the No. 1 stepper motor 25 reverses direction, pushing the first lead screw and nut assembly 24 to move left and right. Simultaneously, the first linear guide slider 23 moves left and right, allowing the first sliding platform 3 to complete left and right movements. Both the first linear guide slider 23 and the first lead screw and nut assembly 24 have limit devices to ensure the safety of the first sliding platform 3 during operation. The safety overflow valve installation device of this invention is simple to use, convenient to operate, safe, and reliable. It can be adjusted according to the operator's required safety overflow valve position and effectively achieves precise docking of the safety overflow valve, possessing excellent practicality and great potential for widespread application.

[0033] Obviously, those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Therefore, if these modifications and variations fall within the scope of the claims of the invention and their equivalents, the invention is also intended to include these modifications and variations.

Claims

1. A rocket safety overflow valve centering assembly device, characterized in that, The device includes a docking platform (1), a first linear guide rail seat (21), a first linear guide rail (22), a first linear guide slider (23), a first lead screw and nut pair (24), a stepper motor (25), a first sliding platform (3), a second lead screw and nut pair (41), a stepper motor (42), a second linear guide rail seat (43), a second linear guide rail (44), a second linear guide slider (45), a second sliding platform (5), a spring device (61), a locking half-clamp (621), a locking half-clamp (622), a locking half-clamp (623), a stepper motor (71), a third sliding platform (72), and a frustum support rod (73); wherein, The second linear guide rail seat (43), the second lead screw nut pair (41), and the No. 2 stepper motor (42) are fixed to the docking platform (1) by bolts. The second linear guide rail (44), the second linear guide slider (45), and the second lead screw nut pair (41) are connected to the second sliding platform (5) by bolts. The first linear guide rail seat (21), the first linear guide rail (22), the first lead screw nut pair (24), and the No. 1 stepper motor (25) are fixed to the second sliding platform (5) by bolts. The first linear guide slider (23) and the first lead screw nut pair (24) are connected to the first sliding platform (3) by bolts. The No. 1 locking half-clamp (621), the No. 2 locking half-clamp (622), and the No. 3 locking half-clamp (623) are installed on the circular On the truncated cone inclined surface of the support rod (73), the elastic device (61) is used to hold the No. 1 locking half-clamp (621), the No. 2 locking half-clamp (622) and the No. 3 locking half-clamp (623) in place by springs after they are installed on the truncated cone inclined surface. The No. 1 locking half-clamp (621), the No. 2 locking half-clamp (622) and the No. 3 locking half-clamp (623) form a locking half-clamp device, which can be combined into a circle. When the locking switch is pressed, the No. 3 stepper motor (71) rotates forward, the truncated cone support rod (73) rotates, and the third sliding platform (72) moves downward, pushing the locking half-clamp device downward so that the locking half-clamp device becomes larger and supports the vent of the safety overflow valve, so that the safety overflow valve and the three-way pipe assembly are suspended and fixed.

2. The rocket safety overflow valve centering assembly device as described in claim 1, characterized in that, When the locking half-clamping device supports the vent of the safety overflow valve, the limiting device on the truncated cone support rod (73) will restrict the locking half-clamping device from becoming larger, so that the vent of the safety overflow valve will not be subjected to stress caused by the excessive expansion of the locking half-clamping device, thus playing a role in protecting product safety and quality.

3. The rocket safety overflow valve centering assembly device as described in claim 1, characterized in that, The operator can measure the gap between the flange face of the tee pipe and the flange face of the storage tank, thereby adjusting the No. 3 stepper motor (71) to continue rotating forward, so that the safety overflow valve and the tee pipe assembly can continue to move downward, ensuring that the gap between the flange face of the tee pipe and the flange face of the storage tank is uniformly and perfectly fitted around the perimeter, and improving the installation accuracy of the mating surface.

4. The rocket safety overflow valve centering assembly device as described in claim 1, characterized in that, When the forward and backward movement switch is pressed, the No. 2 stepper motor (42) reverses forward and backward, pushing the second lead screw nut pair (41) to move forward and backward, causing the second linear guide slider (45) to move forward and backward at the same time, so that the second sliding platform (5) completes the forward and backward movement, thus enabling the safety overflow valve and the three-way pipe assembly to complete the forward and backward movement.

5. The rocket safety overflow valve centering assembly device as described in claim 1, characterized in that, Both the second linear guide slider (45) and the second lead screw nut pair (41) have limit devices to ensure the safety of the second sliding platform (5) of the safety valve centering assembly device during operation.

6. The rocket safety overflow valve centering assembly device as described in claim 1, characterized in that, When the left and right movement switch is pressed, the No. 1 stepper motor (25) reverses direction, pushing the first lead screw nut pair (24) to move left and right. At the same time, the first linear guide slider (23) moves left and right, so that the first sliding platform (3) completes the left and right movement, thus enabling the safety overflow valve and the three-way pipe assembly to complete the left and right movement.

7. The rocket safety overflow valve centering assembly device as described in claim 1, characterized in that, The operator measures the gap between the flange face of the tee pipe and the flange face of the safety overflow valve, as well as the accuracy of the alignment and perpendicularity of the safety overflow valve's vent. This allows the operator to adjust the forward and reverse rotation of stepper motor 1 (25) and stepper motor 2 (42), enabling the safety overflow valve and tee pipe assembly to move forward, backward, left, and right. The operator ensures that the gap between the flange face of the tee pipe and the flange face of the safety overflow valve is uniformly and perfectly fitted around the perimeter. The operator can close stepper motor 1 (25) and stepper motor 2 (42) when the accuracy error of the alignment and perpendicularity of the safety overflow valve's vent is within 1mm.

8. The rocket safety overflow valve centering assembly device as described in claim 1, characterized in that, After the operator finishes installation, press the unlock switch. The No. 3 stepper motor (71) reverses, the truncated cone support rod (73) rotates, causing the third sliding platform (72) to move upward, pushing the locking half-clamping device upward, making the locking half-clamping device smaller, thereby releasing the vent of the safety overflow valve, and separating the safety overflow valve centering assembly device from the safety overflow valve and three-way pipe assembly.

9. A method for installing a rocket safety overflow valve using the rocket safety overflow valve centering assembly device according to any one of claims 1-8, characterized in that: Including the following steps: Step 1: Measure the temperature and humidity of the final assembly plant environment to ensure that the safety overflow valve and the centering assembly device are not affected during use; Step 2: Install the overflow valve centering assembly device at the air vent of the launch vehicle's overflow valve cabin through the threaded hole on the docking platform (1); Step 3: Slowly insert the An Yi valve and the three-way assembly into the locking half-clamping device to ensure that the valve's venting port is undamaged; Step 4: After pressing the locking switch, the locking half-locking device moves downward, making the locking half-locking device larger and thus supporting the vent of the safety overflow valve, so that the safety overflow valve and the three-way pipe assembly are suspended and fixed in the air, ensuring that the safety overflow valve and the three-way pipe assembly do not collide with the box. Step 5: Press the forward and backward movement switch to make the overflow valve and the three-way pipe assembly move forward and backward; when the left and right movement switch is pressed, the overflow valve and the three-way pipe assembly move left and right; at this time, the operator measures the gap between the flange face of the three-way pipe and the flange face of the overflow valve, and the accuracy of the centering and perpendicularity of the overflow valve vent, thereby adjusting the forward and reverse rotation of the No. 1 stepper motor (25) and the forward and reverse rotation of the No. 2 stepper motor (42) so that the overflow valve and the three-way pipe assembly can move forward, backward, left and right; ensure that the gap between the flange face of the three-way pipe and the flange face of the overflow valve is uniform and perfectly fitted around the perimeter, and that the accuracy error of the centering and perpendicularity of the overflow valve vent is within 1mm, then the No. 1 stepper motor (25) and the three-way pipe assembly can be closed. Stepper motor 2 (42); After all three motors are adjusted, stepper motor 1 (25), stepper motor 2 (42) and stepper motor 3 (71) are turned off. The operator begins to install, tighten and fix the bolts between the flange face of the tee pipe and the flange face of the safety overflow valve and between the flange face of the tee pipe and the flange face of the storage tank. After the operator finishes installation, press the unlock switch. Stepper motor 3 (71) reverses and the truncated cone support rod (73) rotates, causing the third sliding platform (72) to move upward. This pushes the locking half-clamping device upward, causing the locking half-clamping device to become smaller and thus loosening the vent of the safety overflow valve, so that the safety overflow valve centering assembly device and the safety overflow valve and tee pipe assembly are separated. Step 6: After installation, ensure that the distance from the overflow valve vent to the bulkhead meets the following two conditions: (1) Vertical distance: The vertical distance from the overflow valve vent to the outer bulkhead is 20-35mm; (2) Alignment requirement: The deviation of the centerline between the overflow valve vent and the bulkhead vent does not exceed 2mm; If the above conditions are met, it is considered that the overflow valve is installed in place with the required accuracy, and the bolts on the docking platform (1) can be removed, i.e., the overflow valve alignment assembly device can be removed.

Images