A C-type installation fixture for rocket propellant tank delivery pipe and its usage method

Abstract

This invention discloses a C-type installation fixture for rocket propellant tank delivery pipes and its usage method, belonging to the field of rocket propellant tank delivery pipe installation technology. It includes a hoisting assembly, a connecting assembly, and a moving support assembly. The installation fixture of this application can form uniform and continuous support and guidance during the movement of the delivery pipe, thereby maintaining the straightness and stability of the installation direction of the delivery pipe. This ensures that the delivery pipe is always constrained and supported by the traction beam and the moving support assemblies on both sides during its entry into the tunnel pipe, significantly reducing the flexible deformation caused by its thin-walled structure. This effectively avoids common quality problems such as bumps, scratches, dents, or cracks in the tunnel pipe and delivery pipe caused by traditional manual pushing methods, ensuring the assembly quality of the rocket propellant tank delivery pipe and the success rate of flight missions. At the same time, it also reduces the labor intensity of manual operation.

Description

Technical Field

[0001] This invention relates to the field of rocket propellant tank delivery pipe installation technology, specifically to a C-type installation tool for rocket propellant tank delivery pipes and its usage method. Background Technology

[0002] The installation of the liquid rocket propellant tank delivery pipe is a crucial step in the rocket assembly process. This component is not only long and heavy, but also needs to pass through the interior of the propellant tank during assembly, making the installation operation complex and extremely difficult.

[0003] Liquid rocket propellant tank tunnels are typically designed with a corrugated structure to enhance the strength and stability of thin-walled components under complex loads during rocket launch. However, this corrugated structure also introduces new challenges during the installation of the delivery pipe: when the delivery pipe is transported into the tunnel, collisions with the crests or troughs of the tunnel's corrugations often result only in minor scratches, dents, or stress concentrations. These types of damage are difficult to detect visually due to their concealed location and are easily overlooked using non-destructive testing methods, thus posing a risk of being "difficult to detect." If not detected in time and entering the flight phase, the high temperature and pressure of the medium can easily lead to leaks, causing a pressure drop within the chamber. In severe cases, this could even trigger an explosion due to contact between the propellant and oxidizer, resulting in mission failure.

[0004] The currently common method involves using supports and manually pushing the delivery pipe into the storage tank from one side. However, this installation method has significant drawbacks: Firstly, the delivery pipe is a thin-walled component with poor overall rigidity and a compensator at one end. During manual pushing, it's difficult to maintain uniform force, easily leading to severe flexible deformation of the delivery pipe, causing it to collide with the tunnel pipe inside the tank. This is especially problematic at the troughs of the delivery pipe, easily resulting in quality defects such as impacts, scratches, or dents. Secondly, manual pushing also suffers from high labor intensity and low efficiency. Since the center of the delivery pipe is usually more than 3 meters above the ground, operators must work at height, increasing labor risks and further exacerbating safety hazards.

[0005] Therefore, existing installation methods can no longer meet the stringent requirements for high reliability and high safety during the assembly of liquid rockets. Summary of the Invention

[0006] The purpose of this invention is to provide a C-type installation fixture for rocket propellant tank delivery pipes and its usage method, which provides reliable support and flexible guidance for the delivery pipe during movement, avoiding direct hard collisions between the delivery pipe and the crests and troughs of the tunnel pipe inner wall caused by manual pushing. This solves the quality risk problem caused by the difficulty in detecting local minor defects from the source, thereby greatly improving the safety and reliability of the delivery pipe installation process.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] A first aspect of the present invention is to provide a C-type installation fixture for a rocket propellant tank delivery pipe, comprising:

[0009] Lifting components, including lifting parts and traction beams;

[0010] The traction beam is arranged horizontally and located below the hoisting component;

[0011] A connecting assembly, one end of which is connected to the traction beam, and the other end of which is detachably connected to one end of the delivery pipe;

[0012] A movable support assembly is used to support the delivery pipe and is located on one side of the storage tank;

[0013] The hoisting component is used to drive the traction beam through the storage tank under the action of the hoisting equipment, and is connected to the conveying pipe through the connecting assembly, so that the conveying pipe is sent into the tunnel pipe in the storage tank under the combined action of the moving support assembly and the hoisting component.

[0014] A further technical solution is that the lifting component includes a lifting beam, a connecting part, and a lifting section; the lifting beam is arranged horizontally and connected to the traction beam through the connecting part; the lifting section is located on the upper side of the lifting beam and is used to connect with the lifting equipment.

[0015] A further technical solution is that the connecting part includes a reinforcing beam and a reinforcing plate; both ends of the reinforcing beam are respectively connected to one end of the traction beam and the hoisting beam in the same direction; the reinforcing plate is disposed at the angle between the reinforcing beam and the traction beam, and between the reinforcing beam and the hoisting beam.

[0016] A further technical solution is that the number of lifting parts is two or more; the lifting part includes a lifting ring, a lifting rope, and a lifting lug; the lifting lug is fixed at both ends near the lifting beam; the lifting ring and the lifting lug are connected by the lifting rope.

[0017] A further technical solution is that the connecting assembly includes a first flange and a connecting plate; the connecting plate is fixedly disposed on one side of the first flange; the first flange is detachably connected to one end of the traction beam through the connecting plate; and the conveying pipe is detachably connected to the other side of the first flange.

[0018] A further technical solution is that the traction beam is provided with a rubber sleeve; the rubber sleeve is used to cover the connecting assembly.

[0019] A further technical solution is that the movable support assembly includes a height adjustment component and rollers; the height adjustment component includes a base, an adjustment tube, an adjustment rod, a limiting rod, and a support seat; the adjustment tube is vertically disposed on the base; the adjustment rod is vertically slidably disposed within the adjustment tube; the support seat is fixed to the upper end of the adjustment rod; a limiting hole is radially opened on the periphery of the adjustment tube; one end of the limiting rod is threaded into the limiting hole and can abut against the adjustment rod; a rotating handwheel is fixed to the outer end of the limiting rod; a guide groove is opened on the support seat; a guide roller is rotatably disposed within the guide groove; the guide roller is used to support and guide the conveying tube.

[0020] A further technical solution is that a second flange is provided at one end of the conveying pipe near the storage tank; the first flange and the second flange are bolted together.

[0021] A second aspect of the present invention is to provide a method of using a C-type installation fixture for a rocket propellant tank delivery pipe, comprising the following steps:

[0022] S1. Connect the lifting ropes to the lifting lugs on both sides of the lifting beam, start the lifting equipment and use the lifting rings to raise the lifting assembly to the same height as the central axis of the storage tank tunnel pipe, adjust the angle of the traction beam to ensure that the traction beam and the central axis of the storage tank are on the same axis.

[0023] S2. Lift the conveying pipe onto the mobile support assembly and adjust the position and height of the mobile support assembly to ensure that the conveying pipe is coaxial with the storage tank;

[0024] S3. Operate the lifting equipment to slowly pass the traction beam through the storage tank, and monitor the height of the traction beam during the passage to prevent collision with the tunnel pipe;

[0025] S4. After the traction beam passes through the tunnel pipe, install the rubber sleeve and connect the first flange to the traction beam with connecting plate bolts;

[0026] S5. Based on the flexible deformation caused by the cantilever state of the traction beam, adjust the angle of the traction beam using the lifting equipment to align the first flange with the second flange of the delivery pipe and connect them with bolts; at the same time, connect the tapered rubber sleeve to the first flange with bolts.

[0027] S6. Fine-tune the height and position of the conveying pipe by moving the support components. Operate the lifting equipment to drive the traction beam and manually push the moving support components to slowly move the conveying pipe to the other side of the storage tank. During the movement, monitor the distance between the conveying pipe and the tunnel pipe in real time and make corrections by fine-tuning the position and angle of the traction beam.

[0028] S7. The delivery pipe is moved into the tunnel pipe and supported at the opening of the tunnel pipe by a flexible rubber pad. Then the first flange is removed, and finally the traction beam is moved away from the delivery pipe by the lifting equipment.

[0029] S8. Disassemble and remove the installation tools for reassembly and use.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] The installation fixture of this application can form uniform and continuous support and guidance during the movement of the delivery pipe, thereby maintaining the straightness and stability of the installation direction of the delivery pipe. This ensures that the delivery pipe is consistently constrained and supported by the lifting equipment and moving support components as it enters the tunnel pipe, significantly reducing the flexural deformation caused by its thin-walled structure. This effectively avoids common quality problems such as bumps, scratches, dents, or cracks that occur in tunnel pipes and delivery pipes under traditional manual pushing methods, ensuring the assembly quality of the rocket propellant tank delivery pipe and the success rate of flight missions. Simultaneously, it reduces the labor intensity of manual operation, minimizes the safety risks associated with high-altitude work, and achieves efficient, stable, and reliable installation of the delivery pipe, improving the overall quality and safety of the delivery pipe assembly. Attached Figure Description

[0032] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration:

[0033] Figure 1 This is a schematic diagram of the overall structure of a C-type installation fixture for rocket propellant tank delivery pipe proposed in this invention;

[0034] Figure 2 This is a schematic diagram of the tooling in its working state during the initial installation of the present invention;

[0035] Figure 3 This is a schematic diagram of the working state of the tooling when the delivery pipe is connected during installation of the present invention;

[0036] Figure 4 This is a schematic diagram of the working state of the tooling when the delivery pipe is pulled to the installation position according to the present invention;

[0037] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0038] Figure 6This is a schematic diagram showing the state of the delivery pipe inside the tunnel pipe when the invention is installed;

[0039] Figure 7 This is a schematic diagram of the structure of the connection component of the present invention;

[0040] Figure 8 This is a schematic diagram of the movable support component of the present invention;

[0041] Figure 9 This is a schematic diagram of the movable support component of the present invention from another perspective.

[0042] Icons: Lifting assembly 1, traction beam 11, lifting beam 12, reinforcing beam 13, reinforcing plate 14, lifting ring 15, lifting rope 16, lifting lug 17, connecting assembly 2, connecting plate 21, first flange 22, rubber sleeve 3, moving support assembly 4, roller 41, base 42, adjusting pipe 43, adjusting rod 44, limit rod 45, support seat 46, rotating handwheel 47, guide roller 48, storage tank 5, conveying pipe 6, tunnel pipe 7, second flange 8. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0044] Example:

[0045] like Figures 1-9 As shown, the present invention provides a C-type installation fixture for rocket propellant tank delivery pipe and its usage method, including a hoisting assembly 1, a connecting assembly 2, and a movable support assembly 4; the hoisting assembly 1 includes a hoisting component and a traction beam 11; the traction beam 11 is horizontally arranged and located below the hoisting component; one end of the connecting assembly 2 is connected to the traction beam 11, and the other end is used for detachable connection to one end of the delivery pipe 6; the movable support assembly 4 is used to support the delivery pipe 6 and is located on one side of the propellant tank 5;

[0046] The lifting component is used to drive the traction beam 11 through the storage tank 5 under the action of the lifting equipment, and connects to the conveying pipe 6 through the connecting component 2, so that the conveying pipe 6 is sent into the tunnel pipe 7 in the storage tank 5 under the joint action of the moving support component 4 and the lifting component. The lifting equipment is a crane.

[0047] The principles and beneficial effects of the above technical solution:

[0048] Driven by the lifting equipment, the traction beam 11 smoothly passes through the storage tank 5 and drives the conveying pipe 6 along the predetermined path into the tunnel pipe 7 inside the storage tank 5. At the same time, the movable support assembly 4 is located on the other side of the storage tank 5, supporting and guiding the other end of the conveying pipe 6, so that the conveying pipe 6 is always in a state of bidirectional support during the installation process, avoiding the need to rely solely on manual force to push it.

[0049] The installation fixture of this application can form uniform and continuous support and guidance during the movement of the delivery pipe 6, thereby maintaining the straightness and stability of the installation direction of the delivery pipe 6. This ensures that the delivery pipe 6 is consistently constrained and supported by the lifting equipment and the moving support assembly 4 during its entry into the tunnel pipe 7, significantly reducing the flexural deformation caused by its thin-walled structure. This effectively avoids common quality problems such as bumps, scratches, dents, or cracks that occur in the tunnel pipe 7 and delivery pipe 6 under traditional manual pushing methods, ensuring the assembly quality of the rocket propellant tank 5 delivery pipe 6 and the success rate of the flight mission. Simultaneously, it reduces the labor intensity of manual operation, reduces the safety risks associated with high-altitude work, and achieves efficient, stable, and reliable installation of the delivery pipe 6, improving the overall quality and safety of the delivery pipe 6 assembly.

[0050] In this embodiment, the lifting component includes a lifting beam 12, a connecting part, and a lifting section; the lifting beam 12 is arranged horizontally and is connected to the traction beam 11 through the connecting part; the lifting section is located on the upper side of the lifting beam 12 and is used to connect with the lifting equipment.

[0051] The connecting part includes a reinforcing beam 13 and a reinforcing plate 14; both ends of the reinforcing beam 13 are respectively connected to one end of the traction beam 11 and the hoisting beam 12 in the same direction; the reinforcing plate 14 is located at the angle between the reinforcing beam 13 and the traction beam 11, and between the reinforcing beam 13 and the hoisting beam 12.

[0052] The number of lifting parts is two or more (in this embodiment, the number of lifting parts is two); the lifting part includes a lifting ring 15, a lifting rope 16 and a lifting lug 17; the lifting lug 17 is fixed at both ends near the lifting beam 12; the lifting ring 15 and the lifting lug 17 are connected by the lifting rope 16.

[0053] The principles and beneficial effects of the above technical solution:

[0054] By setting a lifting beam 12 in the lifting component and introducing a combination structure of reinforcing beam 13 and reinforcing plate 14 between it and the traction beam 11, the connection strength and overall rigidity between the lifting beam 12 and the traction beam 11 are significantly improved. This enhances the overall strength and bending rigidity of the lifting assembly 1 when bearing long, thin-walled conveying pipes 6, and prevents the traction beam 11 and the lifting beam 12 from sagging or twisting under heavy loads, ensuring the straightness of the conveying pipe 6 during installation.

[0055] During the lifting process, the force on the traction beam 11 can be reasonably distributed through the reinforcing beam 13, and the reinforcing plate 14 forms a stable triangular support structure for the connection, thereby avoiding the risk of local stress concentration and deformation during the lifting process. At the same time, the lifting part is set at both ends of the lifting beam 12, and a reliable multi-point suspension method is formed through the lifting lugs 17, lifting ropes 16 and lifting rings 15, so that the traction beam 11 can maintain balanced force and horizontal posture under the drive of the lifting equipment, ensuring the stability and controllability of the conveying pipe 6 when passing through the storage tank 5. This allows the traction beam 11 to maintain a stable posture under the action of the lifting equipment, preventing the conveying pipe 6 from shaking and deviating during the movement, thereby reducing collisions with the inner wall of the tunnel pipe 7, avoiding quality defects such as scratches and dents, and significantly improving the installation reliability and safety of the conveying pipe 6.

[0056] In this embodiment, the connecting assembly 2 includes a connecting plate 21 and a first flange 22; the connecting plate 21 is fixedly disposed on one side of the first flange 22; the first flange 22 is bolted to one end of the traction beam 11 through the connecting plate 21; the conveying pipe 6 is detachably connected to the other side of the first flange 22.

[0057] The principles and beneficial effects of the above technical solution:

[0058] During installation, the traction beam 11 can form a stable fixed connection with the conveying pipe 6 through the first flange 22, ensuring that the conveying pipe 6 can be reliably pulled when moving. This allows the conveying pipe 6 to be firmly connected to the traction beam 11 during installation, avoiding the problem of uneven force caused by manually pushing the conveying pipe 6, effectively reducing the risk of bending and deformation of the conveying pipe 6, and ensuring the coaxiality of the flange connection, thereby improving installation accuracy and assembly quality.

[0059] In this embodiment, a rubber sleeve 3 is provided on the traction beam 11; the rubber sleeve 3 is used to shield the connecting assembly 2; the cross-sectional shape of the rubber sleeve 3 is conical.

[0060] The principles and beneficial effects of the above technical solution:

[0061] Because the first flange 22 is relatively large, it is very easy for it to collide with the inner wall of the tunnel pipe 7 during transportation. By setting the rubber sleeve 3, a flexible buffer layer is formed when the delivery pipe 6 passes through the storage tank 5. This can prevent the connecting component 2 from making direct hard contact with the inner wall of the tunnel pipe 7 during the movement, thus avoiding the risk of damage such as dents and cracks in the delivery pipe 6 and the tunnel pipe 7. It also effectively prevents the situation where the propellant leaks from the storage tank 5 and comes into contact with the oxidizer in the delivery pipe 6 during rocket operation, resulting in a strong reaction.

[0062] The conical rubber sleeve 3 guides the delivery pipe 6 to gradually enter the tunnel pipe 7, avoiding forced squeezing caused by misalignment of the docking angle, effectively reducing installation resistance and positioning deviation, and reducing the risk of scratches or dents caused by collisions.

[0063] In this embodiment, the movable support assembly 4 includes a height adjustment component and rollers 41; the height adjustment component includes a base 42, an adjustment tube 43, an adjustment rod 44, a limiting rod 45, and a support seat 46; the adjustment tube 43 is vertically disposed on the base 42; the adjustment rod 44 is vertically slidably disposed inside the adjustment tube 43; the support seat 46 is fixed to the upper end of the adjustment rod 44; a limiting hole is radially opened on the periphery of the adjustment tube 43; one end of the limiting rod 45 is threaded into the limiting hole and can abut against the adjustment rod 44; a rotating handwheel 47 is fixed to the outer end of the limiting rod 45; a guide groove is opened on the support seat 46; a guide roller 48 is rotatably sleeved in the guide groove through a horizontally arranged rotating shaft; the guide roller 48 is used to support and guide the conveying tube 6; the rollers 41 of the movable support assembly 4 are universal wheels.

[0064] The principles and beneficial effects of the above technical solution:

[0065] The height adjustment component and roller 41 work together to adjust the height and horizontal position of the conveying pipe 6, ensuring that the conveying pipe 6 is always coaxial with the center of the storage tank 5, and avoiding collision with the tunnel pipe 7 during the transportation of the conveying pipe 6; at the same time, the arrangement of the guide roller 48 can guide the conveying pipe 6 away from the moving support component 4, reduce friction, and facilitate its entry into the tunnel pipe 7.

[0066] The guide groove enables the delivery pipe 6 to remain stable, preventing it from shifting laterally or rolling during movement, which helps to improve the stability and safety of the delivery pipe 6 during installation.

[0067] In this embodiment, a second flange 8 is provided at one end of the conveying pipe 6 near the storage tank 5; the first flange 22 and the second flange 8 are bolted together; the traction beam 11 is made of I-beams.

[0068] The principles and beneficial effects of the above technical solution:

[0069] By tightening the bolts on both flanges, the coaxial fixation between the conveying pipe 6 and the traction beam 11 can be ensured, further enhancing the anti-offset capability of the conveying pipe 6 during installation and preventing misalignment of the conveying pipe 6 during movement and docking, thereby improving the sealing performance and overall reliability of the installation.

[0070] A method for using a rocket propellant tank 5 delivery pipe 6C type installation fixture includes the following steps:

[0071] S1. Connect the lifting ropes 16 to the lifting lugs 17 on both sides of the lifting beam 12, start the lifting equipment and raise the lifting assembly 1 to the same height as the central axis of the storage tank 5 tunnel pipe 7 through the lifting ring 15, and adjust the angle of the traction beam 11 to ensure that the traction beam 11 and the central axis of the storage tank 5 are on the same axis.

[0072] S2. Lift the conveying pipe 6 onto the movable support assembly 4, and adjust the position and height of the movable support assembly 4 to ensure that the conveying pipe 6 is coaxial with the storage tank 5.

[0073] S3. Operate the lifting equipment to slowly pass the traction beam 11 through the storage tank 5. During the passage, manually monitor the height of the traction beam 11 to prevent it from colliding with the tunnel pipe 7.

[0074] S4. After the traction beam 11 passes through the tunnel pipe 7, a conical rubber sleeve 3 is installed, and the first flange 22 is bolted to the traction beam 11 through the connecting plate 21. A protective layer of sponge can be wrapped around the periphery of the conveying pipe 6 to prevent the conveying pipe 6 from making hard contact with the inner wall of the crest and trough of the tunnel pipe 7 during the movement.

[0075] S5. Based on the flexible deformation generated by the cantilever state of the traction beam 11, the angle of the traction beam 11 is adjusted by the lifting equipment so that the first flange 22 is aligned with the second flange 8 of the conveying pipe 6 and connected by bolts; at the same time, the conical rubber sleeve 3 is connected to the first flange 22 by bolts; so that the conical rubber sleeve 3 can form a flexible buffer layer on the first flange 22 and the second flange 8 with a diameter larger than that of the traction beam 11 and the conveying pipe 6, which can avoid direct hard contact between the first flange 22 and the second flange 8 and the inner wall of the crest and trough of the tunnel pipe 7 during the movement, thus avoiding the risk of damage such as dents and cracks to the conveying pipe 6 and the tunnel pipe 7;

[0076] S6. Adjust the height and position of the conveying pipe 6 by moving the support assembly 4, operate the lifting equipment to drive the traction beam 11 and manually push the support assembly 4 to make the conveying pipe 6 slowly move to the other side of the storage tank 5. During the movement, monitor the distance between the conveying pipe 6 and the tunnel pipe 7 in real time by manual observation, and correct it by adjusting the position and angle of the traction beam 11.

[0077] S7. Move the conveying pipe 6 into the tunnel pipe 7, ensuring that the two ends of the second flange 8 of the conveying pipe 6 are exposed from both ends of the tunnel pipe 7. Then, support it at the opening of the tunnel pipe 7 with a flexible rubber pad. Then, remove the first flange 22. Finally, drive the traction beam 11 away from the conveying pipe 6 through the first moving support assembly 4.

[0078] S8. Disassemble and remove the installation tools for reassembly and use.

[0079] The technical effects of the above installation fixtures:

[0080] Compared with the existing technology that relies on manual pushing of the conveying pipe 6 to be sent from one side of the storage tank 5, the installation method proposed in this invention supports and guides both ends of the conveying pipe 6 simultaneously by setting up a movable support component 4 and a lifting device, so that the conveying pipe 6 is always in a stable support state during the installation process, avoiding severe flexible deformation caused by unilateral force.

[0081] Under the traction of the traction beam 111, the conveying pipe 6 can slowly enter the storage tank 5 along a predetermined path. Through real-time monitoring and adjustment by manual assistance, the conveying pipe 6 remains coaxially aligned when passing through the tunnel pipe 7, significantly reducing the risk of hard collisions with the crests and troughs of the tunnel pipe 7. Especially during the docking process of the first flange 22 and the second flange 8, the deflection of the traction beam 111 is corrected by adjusting the height of the lifting equipment and support components, ensuring reliable alignment between the first flange 22 and the second flange 8 of the conveying pipe 6 and completing the bolt fixing. At the same time, the application of the conical rubber sleeve 3 and the flexible foam protective layer can form a flexible buffer between the conveying pipe 6 and the inner wall of the tunnel pipe 7, effectively preventing the generation of quality defects such as local dents, scratches, or cracks.

[0082] Compared with traditional methods, the method of this invention not only reduces the labor intensity of manual pushing and the safety risks of high-altitude operations, but also improves the automation and controllability of the installation process of the delivery pipe 6. Ultimately, it enables efficient, stable, and reliable installation of the delivery pipe 6, significantly improving the overall assembly quality and operational safety of the rocket propellant tank 5 delivery pipe 6.

[0083] Although the invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter arrangement within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A C-type installation fixture for a rocket propellant tank delivery pipe, characterized in that it comprises: Lifting components, including lifting parts and traction beams; The traction beam is arranged horizontally and located below the hoisting component; A connecting assembly, one end of which is connected to the traction beam, and the other end of which is detachably connected to one end of the delivery pipe; A movable support assembly is used to support the delivery pipe and is located on one side of the storage tank; The lifting component is used to drive the traction beam through the storage tank under the action of the lifting equipment, and is connected to the conveying pipe through the connecting assembly, so that the conveying pipe is sent into the tunnel pipe in the storage tank under the combined action of the moving support assembly and the lifting component. The lifting component includes a lifting beam, a connecting part, and a lifting section; the lifting beam is arranged horizontally and is connected to the traction beam through the connecting part; the lifting section is located on the upper side of the lifting beam and is used to connect to the lifting equipment. The number of lifting components is two or more; each lifting component includes a lifting ring, a lifting rope, and a lifting lug; the lifting lugs are fixed near both ends of the lifting beam; the lifting ring and the lifting lug are connected by the lifting rope; The connecting assembly includes a first flange and a connecting plate; the connecting plate is fixedly disposed on one side of the first flange; the first flange is detachably connected to one end of the traction beam via the connecting plate; the conveying pipe is detachably connected to the other side of the first flange; The movable support assembly includes a height adjusting component and rollers; the height adjusting component includes a base, an adjusting tube, an adjusting rod, a limiting rod, and a support seat; the adjusting tube is vertically mounted on the base; the adjusting rod is vertically slidably mounted inside the adjusting tube; the support seat is fixed to the upper end of the adjusting rod; a limiting hole is radially formed on the periphery of the adjusting tube; one end of the limiting rod is threaded into the limiting hole and can abut against the adjusting rod; a rotating handwheel is fixed to the outer end of the limiting rod; a guide groove is formed on the support seat; a guide roller is rotatably mounted in the guide groove; the guide roller is used to support and guide the conveying tube; The delivery pipe is provided with a second flange at one end near the storage tank; the first flange and the second flange are bolted together.

2. The C-type installation fixture for a rocket propellant tank delivery pipe according to claim 1, characterized in that: The connecting part includes It includes a reinforcing beam and a reinforcing plate; both ends of the reinforcing beam are connected to one end of the traction beam and the hoisting beam in the same direction, respectively; the reinforcing plate is located at the angle between the reinforcing beam and the traction beam, and between the reinforcing beam and the hoisting beam.

3. The C-type installation fixture for a rocket propellant tank delivery pipe according to claim 1, characterized in that: On the traction beam A rubber sleeve is provided; the rubber sleeve is used to cover the connecting component.

4. A method of using a C-type installation fixture for a rocket propellant tank delivery pipe according to claim 3, characterized in that: Includes the following steps: S1. Connect the lifting ropes to the lifting lugs on both sides of the lifting beam, start the lifting equipment and use the lifting rings to raise the lifting assembly to the same height as the central axis of the storage tank tunnel pipe, adjust the angle of the traction beam to ensure that the traction beam and the central axis of the storage tank are on the same axis. S2. Lift the conveying pipe onto the mobile support assembly and adjust the position and height of the mobile support assembly to ensure that the conveying pipe is coaxial with the storage tank; S3. Operate the lifting equipment to slowly pass the traction beam through the storage tank, and monitor the height of the traction beam during the passage to prevent collision with the tunnel pipe; S4. After the traction beam passes through the tunnel pipe, install the rubber sleeve and connect the first flange to the traction beam with connecting plate bolts; S5. Based on the flexible deformation caused by the cantilever state of the traction beam, adjust the angle of the traction beam using the lifting equipment to align the first flange with the second flange of the delivery pipe and connect them with bolts; at the same time, connect the tapered rubber sleeve to the first flange with bolts. S6. Fine-tune the height and position of the conveying pipe by moving the support components. Operate the lifting equipment to drive the traction beam and manually push the moving support components to slowly move the conveying pipe to the other side of the storage tank. During the movement, monitor the distance between the conveying pipe and the tunnel pipe in real time and make corrections by fine-tuning the position and angle of the traction beam. S7. The delivery pipe is moved into the tunnel pipe and supported at the opening of the tunnel pipe by a flexible rubber pad. Then the first flange is removed, and finally the traction beam is moved away from the delivery pipe by the lifting equipment. S8. Disassemble and remove the installation tools for reassembly and use.

Images