Rocket engine production line inter-process rapid circulation system and method

Abstract

The invention relates to an inter-process rapid circulation system and method for a rocket engine production line. The inter-process rapid circulation system comprises a single-machine bracket, a double-machine bracket, an annular conveying device and an AGV logistics vehicle. The rocket engine is borne on the single-machine bracket or the double-machine bracket, and the AGV logistics vehicle conveys a whole composed of the rocket engine and the single-machine bracket or the double-machine bracket to a station arranged on the annular conveying device. The annular conveying device is provided with a detection station and an assembly station, each station is provided with a lifting hanging tool, the lifting hanging tools are used for separating the rocket engine from the single-machine bracket or the double-machine bracket and fixing the rocket engine to the stations, and automatic circulation of the single-machine engine and the double-machine engine between the detection station and the assembly station is achieved. According to the method, the task requirement for batch production of carrier rockets is met, and the production efficiency and the overall assembly efficiency of single-double rocket engines are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of carrier rocket hydrogen-oxygen engine final assembly, and relates to a system and method for rapid flow between processes of a rocket engine production line. Background Art

[0002] In the assembly of single / double rocket engines, testing and double-engine parallel assembly processes are required after the single-engine assembly is completed. At present, single-station assembly is adopted for both single and double engines. Assemblers use single-machine or double-engine frames to complete the flow of engines between testing and double-engine parallel assembly processes through hoisting, trolleys, etc. The flow of engines between assembly stations in different processes of the production line requires repeated hoisting, handling, manual turnover and other work, resulting in unnecessary logistics turnover and a lot of physical work. The use of single-station assembly flow occupies assembly and testing resources, and the amount of manual operation is large, which restricts the improvement of assembly efficiency. Summary of the invention

[0003] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art and to propose a rapid flow system and method between processes of a rocket engine production line to meet the mission requirements of mass production of launch vehicles and to improve the production efficiency and overall assembly efficiency of rocket engines.

[0004] The technical solution of the present invention is: a rapid flow system between processes of a rocket engine production line, including a single-machine bracket, a double-machine bracket, a ring conveying device and an AGV logistics vehicle;

[0005] The rocket engine is carried on a single-machine bracket or a double-machine bracket. The AGV logistics vehicle transports the rocket engine + single-machine bracket or double-machine bracket as a whole to the workstation where the ring-shaped conveyor device is set up; the ring-shaped conveyor device is equipped with an inspection station and an assembly station, and each station is equipped with a liftable hanging tooling to separate the rocket engine from the single-machine bracket or the double-machine bracket and fix it to the station, and realize the automatic flow of a single engine or two engines at the inspection station and two engines between the assembly stations.

[0006] Furthermore, quick transfer interfaces are designed on the single-machine bracket, the double-machine bracket and the ring conveying device.

[0007] Furthermore, the single-machine bracket includes a slewing bearing, an airtight detection tool, a single-machine bracket frame, a limit block and a limit pin;

[0008] The slewing bearing is fixed on the single-machine bracket frame to realize 360° rotation of the single-machine engine; the airtight detection tooling is fixed on the slewing bearing to realize the rapid leak detection process of the single-machine engine at the detection station; the single-machine engine is fixed on the airtight detection tooling, and a number of limit blocks are evenly distributed along the circumference of the slewing bearing, and the limit pins are inserted into the limit blocks to realize the positioning of the single-machine engine.

[0009] Furthermore, the slewing bearing is fixed on the single-machine bracket frame through a plurality of oblique column supports, and an operating space is reserved.

[0010] Furthermore, the airtightness detection tooling includes a sealing ring seat, a sealing ring, a screw, a guide sleeve, a pad, a handwheel and an air pipe joint; the pad is used to integrate the airtightness detection tooling on the slewing bearing, the handwheel is connected to the screw through the guide sleeve, the handwheel is turned to realize the rotation of the screw, the screw drives the sealing ring seat to rise and fall, so that the sealing ring is squeezed with the throat of the engine thrust chamber to realize the sealing of the engine thrust chamber, and gas is introduced through the air pipe joint to check the airtightness of the engine.

[0011] Further, the dual-machine bracket includes two mounting platforms, two adjustment support columns, four AGV docking guide sleeves and a dual-machine bracket frame;

[0012] Two mounting platforms are installed in parallel on the dual-machine bracket frame for installing two single engines; two adjustment support columns are arranged in the middle of the dual-machine bracket frame to maintain the balance of the dual-machine engines and the rapid docking of the dual-machine engines with the circular conveying device; four AGV docking guide sleeves are respectively arranged on the dual-machine bracket frame on both sides of each mounting platform to ensure the docking accuracy of the dual-machine bracket and the AGV logistics vehicle.

[0013] Furthermore, each mounting platform has an inward θ ° The angle θ is consistent with the angle of the engine thrust chamber, ensuring the stability of the placement of the dual engines; the distance between the two mounting platforms is adjustable, with an adjustment range of 1161mm to 1366mm, meeting the transportation needs of different types of engines.

[0014] Furthermore, the inspection stations include a test station, an engine test swing station, and an engine general inspection station; the test station is used to complete the engine solenoid valve electric pneumatic test, exhaust effect test and valve sealing inspection operations; the engine test swing station is used to complete the engine nozzle extension section test swing work; the engine general inspection station is used to complete the engine overall inspection work.

[0015] Furthermore, the assembly stations include a first double-machine assembly station, a second double-machine assembly station, and a third double-machine assembly station; the first double-machine assembly station is used to complete the engine main structure and pipeline installation work; the second double-machine assembly station is used to complete the sealing inspection, duct blowing and sign installation work; the third double-machine assembly station is used to complete the installation of the electronic control system.

[0016] A method for rapid flow between processes of a rocket engine production line comprises the following steps:

[0017] Use AGV logistics vehicles to transport the single-machine bracket and single-machine engine to the line-up area of ​​the circular conveyor device, hoist the single-machine engine onto the line, and use the circular conveyor device to transfer between the three stations of the test station, engine trial station, and engine general inspection station in sequence. After completing the test and general inspection processes, the single-machine engine is offline;

[0018] Use AGV logistics vehicles to transport the dual-machine brackets and dual-machine engines to the online area of ​​the ring conveyor device, hoist the dual-machine engines online, and use the ring conveyor device to transfer them among the six stations in sequence: the first dual-machine assembly station, the second dual-machine assembly station, the third dual-machine assembly station, the airtightness test station, the engine trial swing station, and the engine general inspection station. After completing the testing and general inspection processes, the dual-machine engines are offline.

[0019] The beneficial effects of the present invention compared with the prior art are:

[0020] (1) The present invention can realize single and double engine shared testing, test swing and general inspection stations by adopting a ring conveying device, thereby improving engine assembly efficiency and saving production resources;

[0021] (2) The single-double bracket design interface realizes the standardization of product clamping, and cooperates with the ring conveyor device to realize the rapid clamping, loading and unloading and automatic circulation of engine products, which significantly improves the circulation efficiency of engines between various workstations and greatly reduces the labor intensity of personnel;

[0022] (3) The integrated air tightness test tooling for the single engine bracket can realize the rapid air tightness test of the single engine in-line;

[0023] (4) After the single-engine and double-engine engines are connected to the annular conveyor, the annular conveyor can lift and lower the engines and move them forward and backward along the annular conveyor chain. This can meet the needs of the single-engine and double-engine engines for air tightness testing, trial swing, general inspection and circulation in the production line, as well as the low-position and high-position operations and circulation of the three workstations of double-engine assembly, greatly improving the overall assembly efficiency of the single-engine and double-engine engines. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of a single-machine bracket according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of a dual-machine bracket according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of a hanging tooling according to an embodiment of the present invention;

[0027] In the figure, 1-slewing bearing, 2-airtightness detection tooling, 3-single machine bracket frame, 4-limit pin, 5-mounting table, 6-adjustment support column, 7-AGV docking guide sleeve, 8-double machine bracket frame, 9-load-bearing trolley, 10-load-bearing lifting bracket, 11-scissor fork bracket, 12-speed differential anti-fall device, 13-servo chain hoist, 14-docking interface frame 14. DETAILED DESCRIPTION

[0028] The present invention designs a set of brackets that meet the requirements of single / double rocket engine transportation and transfer, and cooperates with a ring conveyor device to realize the automatic flow of single and double engines between inspection stations and double engines between assembly stations, so as to reduce the transportation time of engine products during assembly and testing. The current manual transportation of single and double engines by cranes and trolleys is changed to a bracket cooperated with a ring conveyor device to realize the rapid flow of engines in the production line.

[0029] The present invention will be further described below in conjunction with the embodiments.

[0030] Example 1

[0031] The embodiment proposes a rapid flow system between processes of a rocket engine production line, including a single-machine bracket, a double-machine bracket, a ring conveying device, and an AGV logistics vehicle;

[0032] The rocket engine is carried on a single-machine bracket or a double-machine bracket. The AGV logistics vehicle transports the rocket engine + single-machine bracket or double-machine bracket as a whole to the workstation where the ring-shaped conveyor device is set up; the ring-shaped conveyor device is equipped with an inspection station and an assembly station, and each station is equipped with a liftable hanging tooling to separate the rocket engine from the single-machine bracket or the double-machine bracket and fix it to the station, and realize the automatic flow of a single engine or two engines at the inspection station and two engines between the assembly stations.

[0033] Quick-change interfaces are designed on the single-machine bracket, double-machine bracket and ring conveyor.

[0034] like Figure 1As shown, the single-machine bracket includes a slewing bearing 1, an airtight detection tool 2, a single-machine bracket frame 3, a limit block and a limit pin 4; the slewing bearing 1 is fixed to the single-machine bracket frame 3 by bolt connection, so that the single-machine engine can rotate 360°, and the ring conveying device is used to ensure the rapid installation and feeding of the single-machine engine; the airtight detection tool 2 is fixed to the slewing bearing 1 by bolt connection, so that the single-machine engine can be quickly leak-checked at the detection station; the single-machine engine is fixed to the airtight detection tool 2 by bolts, and the limit blocks are evenly distributed along the circumference of the slewing bearing 1 (1 every 45°), and the limit pin 4 is inserted into the limit block to realize the positioning of the single-machine engine. When the single-machine engine needs to rotate, the limit pin 4 is pulled out, and after rotation, the limit pin 4 is reinserted into the limit block of the corresponding angle. The legs of the single-machine bracket frame 3 have four high-strength support feet, which can form a stable support on the ground. The slewing bearing 1 is fixed on the single-machine bracket frame 3 through four oblique column supports, leaving space for the operator to manually turn the hand wheel.

[0035] The airtightness detection tool 2 is integrated with the stand-alone bracket. The airtightness detection tool 2 has the function of sealing the throat of the engine thrust chamber. It can be clamped once to meet the sealing requirements in the entire stand-alone assembly process. Specifically, the airtightness detection tool 2 is mainly composed of a sealing ring seat, a sealing ring, a screw, a guide sleeve, a pad, a handwheel, an air pipe joint, etc. Principle of the airtightness detection tool: The pad is used to integrate the airtightness detection tool 2 on the slewing bearing 1. The handwheel is connected to the screw through the guide sleeve. The screw can be rotated by turning the handwheel. The screw drives the sealing ring seat to rise and fall, so that the sealing ring is squeezed with the throat of the engine thrust chamber to achieve the sealing of the engine thrust chamber. Finally, gas is introduced through the air pipe joint to check the airtightness of the engine.

[0036] like Figure 2 As shown, the dual-machine bracket includes two mounting platforms 5, two adjustment support columns 6, four AGV docking guide sleeves 7 and a dual-machine bracket frame 8; the two mounting platforms 5 are installed in parallel on the dual-machine bracket frame 8 for installing two single engines, and each mounting platform 5 has an inward angle of 2.5° to ensure the stability of engine placement; at the same time, the spacing between the two mounting platforms is adjustable, and the adjustment range is 1161mm~1366mm, which can meet the transportation requirements of different types of engine products. Two adjustment support columns 6 are set in the middle of the dual-machine bracket frame 8 to maintain the balance of the dual-machine engine and the rapid docking of the dual-machine engine with the annular conveying device. Four AGV docking guide sleeves 7 are respectively set on the dual-machine bracket frame 8 on both sides of each mounting platform 5 to ensure the docking accuracy of the dual-machine bracket and the AGV logistics vehicle.

[0037] The inspection stations of the annular conveyor device include the test station, the engine test swing station, and the engine general inspection station. The test station is used for the engine solenoid valve electric pneumatic test, exhaust effect test and valve sealing inspection; the engine test swing station is used to complete the test installation of the engine nozzle extension section, engine test swing and connection part insurance operation; the engine general inspection station is used to complete the overall inspection of the engine such as insurance, lead sealing, multimedia recording, and test point posting.

[0038] The assembly stations of the annular conveying device include the first double-machine assembly station, the second double-machine assembly station, and the third double-machine assembly station. The first double-machine assembly station is used to complete the installation of the frame and thrust chamber, the installation of the hydrogen / oxygen pump front system, the installation of the insulation fireproof layer, the installation of the hydrogen / oxygen system hose, the installation of the metal hose, the installation of the hydrogen / oxygen leakage system, etc.; the second double-machine assembly station is used to complete the installation of the blow-off duct, the general assembly air tightness inspection, the leakage system wrapping, the installation of the sign, etc.; the third double-machine assembly station is used to complete the installation of the pressure reducing valve and the solenoid valve, the installation of the control box, the installation of the reversing system, the installation of the cable, etc.

[0039] like Figure 3 As shown, the hanging tooling at each workstation consists of a load-bearing trolley 9, a load-bearing lifting bracket 10, a scissor fork bracket 11, a speed difference anti-fall device 12, a servo chain hoist 13 and a docking interface frame 14. The load-bearing trolley 9 is connected to the track of the annular conveying device, and the transportation of the hanging tooling between each workstation is realized through the annular track driving device. The four corner screw holes of the docking interface frame at the lower end of the hanging tooling are connected to the engine frame, and the servo chain hoist 13 is used to control the lifting of the hanging tooling to realize the lifting action of the engine product at the workstation.

[0040] According to a rocket engine production line process rapid flow system of this embodiment, a rocket engine production line process rapid flow method is proposed, including the following steps:

[0041] Use AGV logistics vehicles to transport the single-machine bracket and single-machine engine to the online area of ​​the ring conveyor device, hoist the single-machine engine online, and use the ring conveyor device to transfer between the three stations of airtight test station, engine test station, and engine general inspection station in turn. After completing the test and general inspection processes, the single-machine engine is offline;

[0042] Use AGV logistics vehicles to transport the dual-machine brackets and dual-machine engines to the online area of ​​the ring conveyor device, hoist the dual-machine engines online, and use the ring conveyor device to transfer them among the six stations in sequence: the first dual-machine assembly station, the second dual-machine assembly station, the third dual-machine assembly station, the airtightness test station, the engine trial swing station, and the engine general inspection station. After completing the testing and general inspection processes, the dual-machine engines are offline.

[0043] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

[0044] The contents not described in detail in the specification of the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A rapid flow system between processes of a rocket engine production line, characterized in that: Including single-machine bracket, double-machine bracket, ring conveyor and AGV logistics vehicle; The rocket engine is carried on a single-machine bracket or a double-machine bracket. The AGV logistics vehicle transports the rocket engine + single-machine bracket or double-machine bracket as a whole to the workstation where the ring-shaped conveyor device is set up; the ring-shaped conveyor device is equipped with an inspection station and an assembly station, and each station is equipped with a liftable hanging tooling to separate the rocket engine from the single-machine bracket or the double-machine bracket and fix it to the station, and realize the automatic flow of a single engine or two engines at the inspection station and two engines between the assembly stations.

2. A rocket engine production line process rapid flow system according to claim 1, characterized in that: Quick-change interfaces are designed on the single-machine bracket, double-machine bracket and ring conveyor.

3. A rocket engine production line process rapid flow system according to claim 1, characterized in that: The single-machine bracket includes a slewing bearing, an airtight detection tool, a single-machine bracket frame, a limit block and a limit pin; The slewing bearing is fixed on the single-machine bracket frame to realize 360° rotation of the single-machine engine; the airtight detection tooling is fixed on the slewing bearing to realize the rapid leak detection process of the single-machine engine at the detection station; the single-machine engine is fixed on the airtight detection tooling, and a number of limit blocks are evenly distributed along the circumference of the slewing bearing, and the limit pins are inserted into the limit blocks to realize the positioning of the single-machine engine.

4. A rocket engine production line process rapid flow system according to claim 3, characterized in that: The slewing bearing is fixed on the single-machine bracket frame through multiple inclined column supports, leaving operating space.

5. A rocket engine production line process rapid flow system according to claim 3, characterized in that: The airtightness detection tooling includes a sealing ring seat, a sealing ring, a screw, a guide sleeve, a pad, a handwheel and an air pipe joint; the pad is used to integrate the airtightness detection tooling on the slewing bearing, the handwheel is connected to the screw through the guide sleeve, the handwheel is turned to realize the rotation of the screw, the screw drives the sealing ring seat to rise and fall, so that the sealing ring is squeezed with the throat of the engine thrust chamber to realize the sealing of the engine thrust chamber, and gas is introduced through the air pipe joint to check the airtightness of the engine.

6. A rocket engine production line process rapid flow system according to claim 1, characterized in that: The double-machine bracket includes two mounting platforms, two adjustment support columns, four AGV docking guide sleeves and a double-machine bracket frame; Two mounting platforms are installed in parallel on the dual-machine bracket frame for installing two single engines; two adjustment support columns are arranged in the middle of the dual-machine bracket frame to maintain the balance of the dual-machine engines and the rapid docking of the dual-machine engines with the circular conveying device; four AGV docking guide sleeves are respectively arranged on the dual-machine bracket frame on both sides of each mounting platform to ensure the docking accuracy of the dual-machine bracket and the AGV logistics vehicle.

7. A rocket engine production line process rapid flow system according to claim 6, characterized in that: Each mounting platform has an inward θ ° The angle θ is consistent with the angle of the engine thrust chamber, ensuring the stability of the placement of the dual engines; the distance between the two mounting platforms is adjustable, with an adjustment range of 1161mm to 1366mm, meeting the transportation needs of different types of engines.

8. The rapid flow system between processes of a rocket engine production line according to claim 1 is characterized in that: The inspection stations include a test station, an engine test swing station, and an engine general inspection station; the test station is used to complete the engine solenoid valve electric pneumatic test, exhaust effect test and valve sealing inspection; the engine test swing station is used to complete the engine nozzle extension section test swing work; the engine general inspection station is used to complete the engine overall inspection work.

9. The rocket engine production line process rapid flow system according to claim 1 is characterized in that: The assembly stations include a first double-machine assembly station, a second double-machine assembly station, and a third double-machine assembly station; the first double-machine assembly station is used to complete the engine main structure and pipeline installation work; the second double-machine assembly station is used to complete the sealing inspection, blowing off the duct and the nameplate installation work; the third double-machine assembly station is used to complete the installation of the electronic control system.

10. A method for rapid flow between processes in a rocket engine production line based on the system according to any one of claims 1 to 9, characterized in that: The following steps are involved: Use AGV logistics vehicles to transport the single-machine bracket and single-machine engine to the line-up area of ​​the circular conveyor device, hoist the single-machine engine onto the line, and use the circular conveyor device to transfer between the three stations of the test station, engine trial station, and engine general inspection station in sequence. After completing the test and general inspection processes, the single-machine engine is offline; Use AGV logistics vehicles to transport the dual-machine brackets and dual-machine engines to the online area of ​​the ring conveyor device, hoist the dual-machine engines online, and use the ring conveyor device to transfer them among the six stations in sequence: the first dual-machine assembly station, the second dual-machine assembly station, the third dual-machine assembly station, the airtightness test station, the engine trial swing station, and the engine general inspection station. After completing the testing and general inspection processes, the dual-machine engines are offline.

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