Large parallel liquid rocket engine vertical transportation damping packing box and packing method

Abstract

The invention discloses a large parallel liquid rocket engine vertical transportation damping packing box and a packing method. The packing box comprises an upper box body, a middle box body, a lower box body, a supporting frame, a lifting appliance and an external movable power source assembly. The lower box body and the supporting frame are connected through the shock absorbers so that the shock absorption function in the transportation process can be achieved. The supporting frame is provided with a cantilever assembly and an adapter ring support, and the cantilever assembly and the adapter ring support are used for vertically placing and fixing the parallel engine and the adapter ring. And the lower box body is a packing box foundation. Before boxing, the adapter ring and the parallel engine are connected into a whole, after assembling is completed, the adapter ring and the whole machine are vertically lifted and fixedly connected to the supporting frame, the box cover is buckled, related sensors of the engine are connected with a power source, electric power is provided for real-time monitoring in the transportation process, and then road transportation is conducted. By means of the reasonable structural design and boxing mode, vertical transportation of the whole large-size multi-engine parallel liquid rocket engine is achieved, and the engine assembling and transporting efficiency is remarkably improved.

Description

Technical Field

[0001] The invention relates to a shock-absorbing packaging box for vertical transportation of a large parallel liquid rocket engine and a packing method, belonging to the technical field of transportation of large parallel liquid rocket engines. Background Art

[0002] Packaging boxes are an indispensable part of the development process of liquid rocket engines. From small parts to large engines, packaging boxes are needed for turnover during the production and testing process. Existing engine packaging boxes are usually used for short-distance turnover of engines. They adopt a "single-layer base + box cover" structure. When packing, the engine needs to be flipped from a vertical state to a horizontal state. After arriving at the destination, the engine is flipped from a horizontal state to a vertical state again. When transporting long distances, the engine is partially disassembled and assembled and tested when it is transported to the destination. After long-term use, the defects of existing engine packaging boxes become apparent:

[0003] First, the engine must be turned over when loading and unloading. Special tooling is required for turnover protection, which not only complicates the operation process, increases manpower input and transportation costs, but also increases the risk factor of the engine during the turning process;

[0004] Second, the packaging box can only transport a single engine as a whole unit, and is not capable of transporting multiple parallel engines as a whole unit. Due to the high height, large size, and heavy weight of multiple parallel engines, there is currently no dedicated flipping equipment and transportation method. According to the general transportation method, the engine needs to be disassembled and transported as a single unit, and then reassembled before delivery, which will result in losses in manpower, material resources, and financial resources;

[0005] Third, the packaging box does not have the function of box insulation. With the development of engine technology, the requirements for its transportation have also increased. Simple single-machine transportation boxes can no longer meet the environmental requirements of long-distance engine transportation. Extreme cold and heat and wind and rain have an impact on the transportation of the entire engine. There is no external power supply function, and it cannot provide power for various sensors to monitor the engine transportation status and ensure the safety of the engine transportation process. Summary of the invention

[0006] The technical problem solved by the present application is to overcome the shortcomings of the prior art and provide an engine packaging box and packaging method that is easy to assemble, highly functional, and high in strength, for vertical long-distance transportation of large-sized, heavy-weight multi-machine parallel liquid rocket engines. The introduction of the packaging box and the corresponding packaging method enables large-sized, heavy-weight multi-machine parallel liquid rocket engines to achieve long-distance transportation in a vertical state, reducing the investment in assembly, measurement, and inspection personnel and equipment, and greatly reducing manpower, material resources, and time costs.

[0007] The technical solutions provided by this application are as follows:

[0008] A vertical transport shock-absorbing packaging box for a large parallel liquid rocket engine, comprising: a mobile battery pack, an upper box body, a middle box body, a lower box body, a clamp, a pull rod, a support frame and a slewing cantilever;

[0009] The mobile battery pack is a parallel assembly of standard battery packs, which provides power for the engine sensors during transportation and is fastened to the transport vehicle through an external box and bolts;

[0010] The guide sleeve is welded on the outside of the main frame of the upper box body, which cooperates with the guide column of the middle box body to facilitate the buckling of the box cover and avoid damaging the engine; the connecting lugs are welded on the outside of the frame and used with corresponding fasteners to achieve the connection and fastening of the upper box body with the large and medium boxes;

[0011] The guide sleeve and guide column are welded on the outside of the main frame of the middle box body, which cooperate with the guide column of the lower box body and the guide sleeve of the upper box body respectively, so as to facilitate the buckling of the middle box body with the upper box body and the lower box body respectively, and avoid damaging the engine; the connecting lugs are welded on the outside of the frame, which are used with corresponding fasteners to realize the connection and fastening of the middle box body with the upper box body and the lower box body respectively;

[0012] By designing the split cover structure of the upper box and the middle box, the lifting state and lifting method can be flexibly determined in combination with the on-site lifting capabilities.

[0013] A guide column is welded on the outside of the main frame of the lower box body, which cooperates with the guide sleeve of the middle box body to facilitate the buckling of the box cover and avoid damaging the engine; a connecting lug is welded on the outside of the frame and used with corresponding fasteners to achieve the connection and fastening of the lower box body and the middle box body; a support frame installation device is set on the inside of the frame for fastening and connecting with the support frame;

[0014] The main body of the clamp is a full ring structure with a nozzle profile, which is used to fix the tail of the product and prevent the tail of the product from shaking during transportation. The outer side of the clamp is welded with a connecting lug, which is used with corresponding fasteners to achieve a tight connection between the clamp and the pull rod;

[0015] The main body of the pull rod is an extendable fastening rod used to connect the clamp and the support frame. Lugs are provided at both ends of the pull rod, which are used in conjunction with corresponding fasteners to achieve fastening connections between the pull rod and the clamp and the support frame respectively;

[0016] The main body of the support frame is a standard square tube profile welded structure, which is used to support the engine; the upper end is designed with a flange support frame for installing the cantilever; the lower end is designed with a connecting seat assembly for fixed connection with the lower box; operating platforms and ladders are designed on both sides for adjusting the cantilever when docking with the adapter ring, so as to achieve the fixation of the adapter ring and the whole machine;

[0017] The main body of the slewing cantilever is welded from standard profiles. The lower end is designed with a flange docking surface to connect with the support frame. The upper end surface is designed with a limit ring and a docking flange to ensure the fixed connection and limit of the adapter ring.

[0018] The engine is in a vertical state before packing, and the adapter ring is assembled and fixed to the engine; the slewing cantilever is rotated to the specified position, and the adapter ring is lifted to lift the engine together with the adapter ring vertically, and hoisted to the top of the support frame; the engine is slowly lowered to avoid the interference position, and the slewing cantilever is rotated to the specified position, and the limit pin is inserted; the engine is slowly lowered and assembled and fixed to the slewing cantilever; the clamp is installed at the nozzle to fix the tail nozzle, and the pull rod is installed to connect the clamp and the support frame respectively to fix the tail of the product; after installing the corresponding fasteners and equipping the safety lead wire, the middle box and the upper box are buckled in turn, and the fasteners at each location are connected before loading and transportation.

[0019] Furthermore, the upper box body and the main frame are made of 50*50*2 Q355 square tubes spliced ​​and welded, and the outer skin is covered with a 2mm thick SUS304 stainless steel plate welded on the surface and welded to the frame to ensure sealing, and the outer skin is flat, smooth, without defects such as bulges and wrinkles; the inner skin is made of 2mm aluminum alloy plate, which is bonded to the frame, and polyurethane foam insulation material is filled between the inner and outer skins; the upper box body is equipped with a ladder and guardrail, which are made of carbon steel to facilitate personnel to disassemble and assemble the hooks for getting on and off the box body; the upper box body guide sleeves are welded on the front and rear panels of the box body for installation guidance of the upper box body and the middle box body.

[0020] Furthermore, the main frame of the middle box is made of 50*50*2 Q355 square tubes spliced ​​and welded, and the outer skin is covered with 2mm thick SUS304 stainless steel plate welded on the surface and welded to the frame to ensure sealing, and the outer skin is flat, smooth, without defects such as bulges and wrinkles; the inner skin is made of 2mm aluminum alloy plate, which is bonded to the frame, and polyurethane foam insulation material is filled between the inner and outer skins. A door is set at the front and back of the middle box to facilitate the inspection of the goods during transportation. Considering the convenience of personnel entering and exiting the box, a water guide groove is set on the upper part of the door. The tailgate sealing material is EPDM rubber (common material for refrigerated box trucks and insulated box trucks), which has a good sealing effect. It has been verified by actual transportation that the sealing is reliable and easy to maintain; the upper box guide column and the lower box guide sleeve are welded on the front and rear panels of the box, which are used for the installation guide of the upper box and the middle box, as well as the middle box and the lower box; 2 dry powder fire extinguishers are configured at the rear door of the middle box to ensure transportation safety.

[0021] Furthermore, the main body of the lower box is a standard square tube profile welded structure, which serves as the base of the box and is used to support the weight of the box and the engine; the movable bolt support ears are welded around it; they are used to install the movable bolts and connect and tighten with the middle box; the lifting rings are welded on both sides for lifting the box as a whole; the supporting frame docking flange is welded inside the box for fastening with the supporting frame; the guide column is welded outside for installation guidance with the middle box; the upper plane is welded along the periphery with angle steel to prevent rainwater from entering the box and causing rust on the packaging box and the engine. 10 desiccant boxes are set inside the box, which are connected to the inner skin by bonding to ensure a dry environment inside the box.

[0022] Furthermore, the upper box body includes an upper box body frame, an upper box body outer skin, connecting ears, guide sleeves, ladder guardrails, lifting rings and an upper box body inner skin. The upper box body frame is formed by cutting and welding Q355 rectangular tubes. The upper box body outer skin is a stainless steel plate, which is cut according to the outer dimensions of the upper box body frame and welded to the frame. The upper box body outer skins are continuously welded, and the upper box body outer skins and the upper box body frame are riveted or intermittently welded to ensure the fit; the upper box body inner skin is made of 2mm aluminum alloy plate, which is bonded to the upper box body frame, and polyurethane foam insulation material is filled between the upper box body outer skin and the upper box body inner skin to ensure the temperature of the box body; the connecting ears are welded to the outside of the bottom of the upper box body frame and coordinated with the size of the fastener support of the middle box body; the guide sleeves are welded to the outside of the bottom of the upper box body frame and coordinated with the size of the guide column of the middle box body; the ladder guardrail is connected to the bumps welded on the upper box body frame by screws to ensure the safety of using the ladder. The lifting ring is welded on the upper box frame and is used to lift the entire upper box.

[0023] Furthermore, the middle box includes a middle box frame, a middle box outer skin, connecting ears, guide columns, middle box guide sleeves, a fire extinguisher placement platform, a ladder, a cabin door, a middle box lifting ring and a middle box inner skin. The middle box frame is made of Q355 rectangular tubes cut and welded together. The middle box outer skin is a stainless steel plate, which is cut according to the outer dimensions of the middle box frame and welded to the frame. The middle box outer skins are continuously welded together, and the middle box outer skins and the middle box frame are riveted or intermittently welded to ensure the fit. The middle box inner skin is made of 2mm aluminum alloy plate, which is bonded to the middle box frame. The outer skin and the inner skin of the middle box are filled with polyurethane foam insulation material to ensure the box temperature; the connecting lugs are welded on the outside of the top and bottom of the middle box frame, and are coordinated with the size of the fastener supports of the upper box and the lower box; the guide column is welded on the outside of the top of the middle box frame, and is coordinated with the size of the guide sleeve of the upper box; the guide sleeve is welded on the outside of the bottom of the middle box frame, and is coordinated with the size of the guide column of the lower box; the fire extinguisher placement table is connected to the flange welded on the middle box frame by screws to place the fire extinguisher; the ladder is connected to the bump welded on the middle box frame by screws to ensure usability. The cabin door is connected to the flange welded on the middle box frame by screws, and a water guide groove is set on the upper part. The tail door sealing material is EPDM rubber to ensure the sealing of the box; the middle box lifting ring is welded above the middle box frame to lift the entire middle box.

[0024] Furthermore, the lower box includes a middle box guide column, a fastening support, a lower box frame, a shock absorber support flange, a tie rod support, a lower box lifting ring, and a shock absorber; the lower box frame is the bottom reference of the lower box, and other parts are welded to the lower box frame, and the lower box guide column is welded on both sides above the lower box frame; the shock absorber support flange and the tie rod support lower box lifting ring are welded to the inner side of the lower box frame; the lower box is connected to the tie rod through the tie rod support; the lower box is connected to the support frame through the shock absorber; the fastening support is welded to the outer side of the lower box frame, and is fixedly connected to the middle box through screws;

[0025] Furthermore, the clamp comprises two half hoops, a first half hoop and a second half hoop; connecting ears are respectively welded at the joints of the two half hoops, and the first half hoop and the second half hoop are connected by bolts; tie rod ears are respectively welded on the outer sides of the two half hoops, and are connected to the tie rod by bolts;

[0026] Furthermore, the pull rod includes a joint bearing, an adjusting screw and a support tube. The joint bearing can achieve a certain angle of rotation to ensure the installation of the clamp and the pull rod; the adjusting screw can achieve fine adjustment of the length of the pull rod;

[0027] Furthermore, the support frame includes an operating platform, a support frame ladder guardrail, a slewing cantilever docking flange, a shock absorber docking support, a support frame main frame and a lifting ring; the operating platform is welded by square tube profiles and welded to the front and rear sides of the support frame main frame, and supporting pipes are welded under the operating platform to ensure its strength and operational safety; the support frame ladder guardrail is welded to the support frame main frame by continuous welding, so that the operator can operate conveniently when docking the adapter ring; the slewing cantilever docking flange is connected to the slewing cantilever by bolts; the shock absorber docking support is welded to the bottom of the support frame main frame and connected to the shock absorber by bolts; the lifting ring is welded to the bottom crossbeam of the support frame main frame and is only used to lift the support frame as a whole;

[0028] Furthermore, the slewing cantilever includes a slewing seat, a docking flange, a guide column and a pressure plate. The slewing seat is welded by a round tube, a rib plate and a profile, and can be rotated around the base to avoid interference parts and ensure engine assembly; the docking flange is connected to the support frame by bolts, and the guide column is welded to the slewing cantilever. The guide column is responsible for the docking guidance of the adapter ring and the slewing cantilever, and the adapter plate is pressed by the pressure plate and bolts;

[0029] Furthermore, the mobile battery pack uses a lead-acid power battery pack, and the external protective box is used for waterproofing and impact protection during transportation. During transportation, it is placed outside the transport box and connected to the engine acceleration, temperature and humidity sensor inside the box through waterproof wires to provide power support.

[0030] Furthermore, the present invention also proposes a liquid rocket engine packaging method for vertical transportation of large parallel liquid rocket engines, the steps of which are as follows:

[0031] Step 1: After the engine is assembled, install the lifting adapter ring above the engine frame and connect it to the frame tightly, and rotate the slewing cantilever to the specified position to avoid interference;

[0032] Step 2: Use a four-claw straight beam hoist to hoist the lower box (including the support frame) to the transport vehicle;

[0033] Step 3: Lift the adapter ring, lift the engine vertically, move it horizontally to the top of the support frame, slowly drop the product, avoid the interference position, rotate the slewing cantilever to the docking position, and insert the limit pin;

[0034] Step 4: Slowly drop the product and guide it through the guide column to ensure that the adapter ring and the slewing cantilever are docked. Then, use the pressure plate and shoulder bolts to tighten the adapter ring in the vertical direction to ensure that it will not move during transportation.

[0035] Step 5: Install the clamp to the engine nozzle collector, adjust the clamp posture, and ensure the connection is tight;

[0036] Step 6: Install the tie rod, connect the clamp and the support frame to ensure that the engine nozzle is fixed horizontally to prevent displacement during transportation;

[0037] Step 7: Check the engine status. If it is qualified, tighten all fasteners again and use lead wire to prevent it from falling off;

[0038] Step 8: Lift the lifting point of the middle box, insert the middle box into the guide column of the lower box, and slowly buckle it;

[0039] Step 9: Connect the fasteners between the middle box and the lower box and use lead wire to prevent them from falling off;

[0040] Step 10: Lift the upper box lifting point, insert the upper box into the middle box guide column, and slowly buckle it;

[0041] Step 11: Lead the power lines of each engine sensor out of the transport box through the dedicated line outlet of the box and connect them to the mobile power supply assembly.

[0042] Step 12: Connect the fasteners between the upper box and the middle box and use lead wire to prevent them from falling off;

[0043] Step 13: Tighten the main box to ensure a tight connection between the box and the flatbed truck to ensure transportation safety for long-distance transportation.

[0044] The advantages of the present invention compared with the prior art are:

[0045] ① This packaging box is divided into two parts: the support frame and the large box are connected and fixed by shock absorbers. During transportation, the shock absorbers absorb the bumps and vibrations of transportation, meeting the transportation requirements of the whole engine;

[0046] ② This packaging box realizes the whole-machine transportation of multiple parallel engines with large size and heavy weight, avoiding the repeated disassembly and assembly of multiple engines before and after transportation, and reducing the manpower, material and financial costs caused by assembly and testing;

[0047] ③This packaging box can achieve the guarantee of transportation environment conditions. Since the cover of this packaging box is designed as a double-layer structure, it can ensure the insulation and heat insulation of the box in hot weather and extremely cold weather, and can effectively ensure the temperature inside the box. In addition, this packaging box is connected to an external mobile power supply component, which can use temperature, humidity and acceleration sensor devices to detect and record the temperature, humidity and acceleration impact of the parallel engine in the transportation packaging box, ensuring and monitoring the environmental changes during the engine transportation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 This is a two-dimensional schematic diagram of the packaging box;

[0049] Figure 2 This is a schematic diagram of the structure of the box body components of this packaging box;

[0050] Figure 3 This is a schematic diagram of the box body components in this packaging box;

[0051] Figure 4 This is a schematic diagram of the structure of the lower box components of this packaging box;

[0052] Figure 5 This is a schematic diagram of the structure of the clamp components of this packaging box;

[0053] Figure 6 This is a schematic diagram of the structure of the pull rod components of this packaging box;

[0054] Figure 7 This is a schematic diagram of the structure of the support frame components of this packaging box;

[0055] Figure 8 This is a schematic diagram of the rotating cantilever component of this packaging box. DETAILED DESCRIPTION

[0056] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments disclosed in the present invention will be further described in detail below with reference to the accompanying drawings.

[0057] The embodiment of the present application provides a large parallel liquid rocket engine vertical transport shock-absorbing packaging box, which is composed of the attached Figure 1 It can be seen that the packaging box is composed of a mobile battery pack 1, an upper box body 2, a middle box body 3, a lower box body 4, a clamp 5, a pull rod 6, a support frame 7 and a swivel cantilever 8, and each part is connected and fixed by bolts, washers and anti-loosening nuts of corresponding specifications and sizes.

[0058] The mobile battery pack (1) is a standard battery pack assembled in parallel, which provides power for the whole sensor during transportation and is connected and fastened to the transport vehicle through an external box and bolts;

[0059] The guide sleeve is welded on the outside of the main frame of the upper box body 2, which cooperates with the guide column of the middle box body 3 to facilitate the buckling of the box cover and avoid damaging the engine; the connecting ears are welded on the outside of the frame and used with corresponding fasteners to achieve the connection and fastening of the upper box body 2 and the large and medium box bodies 3;

[0060] The guide sleeve and guide column are welded on the outside of the main frame of the middle box body 3, which cooperate with the guide column of the lower box body 4 and the guide sleeve of the upper box body 2 respectively, which is conducive to the buckling of the middle box body 3 with the upper box body 2 and the lower box body 4 respectively, avoiding damage to the engine; the connecting ears are welded on the outside of the frame, which are used in conjunction with corresponding fasteners to realize the connection and fastening of the middle box body 3 with the upper box body 2 and the lower box body 4 respectively;

[0061] A guide column is welded on the outer side of the main frame of the lower box body 4, which cooperates with the guide sleeve of the middle box body 3 to facilitate the buckling of the box cover and avoid damaging the engine; a connecting lug is welded on the outer side of the frame and used with corresponding fasteners to achieve the connection and fastening of the lower box body 4 and the middle box body 3; a support frame installation device is set on the inner side of the frame for fastening and connecting with the support frame 7;

[0062] The main body of the clamp 5 is a nozzle-shaped ring structure, which is used to fix the tail of the product to prevent the tail of the product from shaking during transportation. The outer side of the clamp 5 is welded with a connecting lug, which is used in conjunction with a corresponding fastener to achieve a fastened connection between the clamp 5 and the pull rod 6;

[0063] The main body of the pull rod 6 is an extendable fastening rod, which is used to connect the clamp 5 and the support frame 7. The two ends of the pull rod 6 are provided with support ears, which are used in conjunction with corresponding fasteners to respectively realize the fastening connection between the pull rod 6 and the clamp 5 and the support frame 7;

[0064] The main body of the support frame 7 is a standard square tube profile welded structure, which is used to support the engine; a flange support frame is designed at the upper end for installing the cantilever 8; a connecting seat assembly is designed at the lower end for fixed connection with the lower box 4; operating platforms and ladders are designed on both sides for adjusting the cantilever 8 when docking with the adapter ring, so as to achieve the fixation of the adapter ring and the whole machine;

[0065] The main body of the slewing cantilever 8 is welded from standard profiles, with a flange docking surface designed at the lower end to connect with the support frame 7, and a limit ring and a docking flange designed at the upper end to ensure the fixed connection and limit of the adapter ring;

[0066] The engine is in a vertical state before packing, and the adapter ring is assembled and fixed to the engine; the slewing cantilever 8 is rotated to the specified position, and the adapter ring is lifted to lift the engine together with the adapter ring vertically, and hoist it to the top of the support frame 7; the engine is slowly lowered to avoid the interference position, and the slewing cantilever 8 is rotated to the specified position, and the limit pin is inserted; the engine is slowly lowered and assembled and fixed to the slewing cantilever 8; the clamp 5 is installed at the nozzle to fix the tail nozzle, and the pull rod 6 is installed to connect the clamp 5 and the support frame 7 respectively to fix the tail of the product; after installing the corresponding fasteners and equipping the safety lead wire, the middle box body 3 and the upper box body 2 are buckled in turn, and the fasteners at each location are connected before loading and transportation.

[0067] like Figure 2As shown, the upper box body 2 includes an upper box body frame 9, an upper box body outer skin 10, a connecting lug 11, a guide sleeve 12, a ladder guardrail 13, a lifting ring 14 and an upper box body inner skin 15. The upper box body frame 9 is cut and welded by a Q355 rectangular tube. The upper box body outer skin 10 is a stainless steel plate, which is cut according to the outer dimensions of the upper box body frame 9 and welded to the frame. The upper box body outer skins are continuously welded, and the upper box body outer skin 10 and the upper box body frame 9 are riveted or intermittently welded to ensure the fit; the upper box body inner skin 15 adopts 2mm aluminum alloy plate, bonded to the upper box frame 9, polyurethane foam insulation material is filled between the upper box outer skin 10 and the upper box inner skin 15 to ensure the box temperature; the connecting lug 11 is welded to the outside of the bottom of the upper box frame 9, and is coordinated with the size of the fastener support of the middle box 3; the guide sleeve 12 is welded to the outside of the bottom of the upper box frame 9, and is coordinated with the size of the guide column of the middle box 3; the ladder guardrail 13 is connected to the protrusion welded on the upper box frame 9 by screws to ensure the safety of using the ladder. The lifting ring 14 is welded above the upper box frame 9 and is used to lift the entire upper box.

[0068] As an embodiment, the main frame of the upper box body 2 is made of 50*50*2 Q355 square tubes spliced ​​and welded, and the outer skin is covered with a surface-welded 2mm thick SUS304 stainless steel plate and welded to the frame to ensure sealing, and the outer skin is flat, smooth, and has no defects such as bulges and wrinkles; the inner skin is made of 2mm aluminum alloy plate, which is bonded to the frame, and polyurethane foam insulation material is filled between the inner and outer skins; the upper box body 2 is equipped with a ladder and guardrail, which are made of carbon steel to facilitate personnel to disassemble and assemble the hooks for getting on and off the box body; the upper box body guide sleeve is welded to the front and rear panels of the box body, which is used for installation guidance of the upper box body 2 and the middle box body 3.

[0069] like Figure 3 As shown, the middle box 3 includes a middle box frame 16, a middle box outer skin 17, a connecting lug, a guide column 18, a middle box guide sleeve 19, a fire extinguisher placement platform 20, a ladder 21, a cabin door 22, a middle box lifting ring 23 and a middle box inner skin 24, see the attached Figure 3The middle box frame 16 is made of Q355 rectangular tubes cut and welded together. The middle box outer skin 17 is made of stainless steel plate, which is cut according to the outer dimensions of the middle box frame 16 and welded to the frame. The middle box outer skins 17 are continuously welded, and the middle box outer skins 17 and the middle box frame 16 are riveted or intermittently welded to ensure the fit; the middle box inner skin 24 is made of 2mm aluminum alloy plate, which is bonded to the middle box frame 16. The middle box outer skin 17 and the middle box inner skin 24 are filled with polyurethane foam insulation material to ensure the box temperature; the middle box connection support The ears are welded on the top and bottom outer sides of the middle box frame 16, and are coordinated with the size of the fastener supports of the upper box 2 and the lower box 4; the guide column 18 is welded on the top outer side of the middle box frame 16, and is coordinated with the size of the guide column of the upper box 2; the middle box guide sleeve 19 is welded on the bottom outer side of the middle box frame 16, and is coordinated with the size of the guide column of the lower box 4; the fire extinguisher placement platform 20 is connected to the flange welded on the middle box frame 16 by screws to place the fire extinguisher; the ladder 21 is connected to the protrusion welded on the middle box frame 16 by screws to ensure usability. The cabin door 22 is connected to the flange welded on the middle box frame 16 by screws, and a water guide groove is set on the upper part. The tail door sealing material is selected from EPDM rubber to ensure the sealing of the box; the middle box lifting ring 23 is welded above the middle box frame 16, and is used to lift the entire middle box 3.

[0070] The main body of the lower box 4 is a standard square tube profile welded structure, which serves as the base of the box and is used to support the weight of the box and the engine; the movable bolt support ears are welded around it; they are used to install the movable bolts and connect and tighten with the middle box 3; the two sides are welded with lifting rings for lifting the box as a whole; the inner side of the box is welded with a supporting frame docking flange for fastening with the supporting frame 7; the outer side is welded with a guide column for installation and guidance with the middle box (3); the upper plane is welded with angle steel along the circumference to prevent rainwater from entering the box and causing rust on the packaging box and the engine. Ten desiccant boxes are set inside the box, which are connected to the inner skin by bonding to ensure a dry environment inside the box.

[0071] Specifically, Figure 4 As shown, the lower box body 4 includes a lower box body guide column 25, a fastening support 26, a lower box body frame 27, a shock absorber support flange 28, a tie rod support 29, a lower box body lifting ring 30, and a shock absorber 31; the lower box body frame 27 is the bottom reference of the lower box body 4, and other parts are welded to the lower box body frame 27, and the lower box body guide column 25 is welded to both sides above the lower box body frame 27; the shock absorber support flange 28, the tie rod support 29 and the lower box body lifting ring 30 are welded to the inner side of the lower box body frame 27; the lower box body 4 and the tie rod 6 are connected through the tie rod support 29; the shock absorber 31 is connected to the shock absorber support flange 28, and the lower box body 4 and the support frame 7 are connected through the shock absorber 31; the fastening support 26 is welded to the outer side of the lower box body frame 27, and is fixedly connected to the middle box body 3 by screws;

[0072] The clamp 5 comprises two half clamps, a first half clamp 32 and a second half clamp 33; see attached Figure 5 , the two half hoops are respectively welded with connecting ears 35 at the joints, and the first half hoop 32 and the second half hoop 33 are connected by bolts; the tie rod ears 34 are respectively welded on the outsides of the two half hoops, and the tie rod ears 34 and the tie rod 6 are connected by bolts;

[0073] As attached Figure 6 The pull rod 6 includes a joint bearing 36, an adjusting screw 37 and a support tube 38. The adjusting screw 37 is threadedly connected in the support tube 38. One end of the adjusting screw 37 extending out of the support tube 38 is connected to a first lug through the joint bearing 36, and the other end of the support tube 38 is connected to a second lug. The pull rod 6 is connected between the clamp 5 and the lower box 4, or between the clamp 5 and the support frame 7 through the first lug and the second lug. The joint bearing 36 can achieve a certain angle of torsion to ensure that the pull rod 6 is installed between the clamp 5 and the pull rod 6, or between the clamp 5 and the support frame 7; by rotating the adjusting screw 37, the length of the pull rod can be fine-tuned;

[0074] The support frame 7 includes an operating platform 39, a support frame ladder guardrail 40, a slewing cantilever docking flange 41, a shock absorber docking support 42, a support frame main frame 43 and a lifting ring 44; see attached Figure 7 The operating platform 39 is welded by square tube profiles and welded on the front and rear sides of the main frame 43 of the support frame. Support pipes are welded under the operating platform 39 to ensure its strength and operational safety; the ladder guardrail 40 of the support frame is welded on the main frame 43 of the support frame by continuous welding, so that the operator can operate conveniently when docking the adapter ring; the slewing cantilever docking flange 41 is connected to the slewing cantilever 8 by bolts; the shock absorber docking support 42 is welded to the bottom of the main frame 43 of the support frame and connected to the shock absorber 31 by bolts; the lifting ring 44 is welded to the bottom crossbeam of the main frame 43 of the support frame and is only used to lift the support frame as a whole;

[0075] like Figure 8As shown, the swivel cantilever 8 includes a swivel seat 45, a docking flange 46, a guide column 47 and a pressure plate 48. The swivel seat 45 is welded by a round tube, a rib plate and a profile. The docking flange 46 includes a base and a flange body. The base and the flange body are welded. The base is inserted in the round tube, and the base and the round tube rotate relative to each other. The flange body is connected to the top of the support frame 7 by bolts. The swivel seat 45 can be rotated around the base to avoid interference parts and ensure engine assembly. The guide column 47 is welded to the top of the swivel seat 45. The adapter ring is provided with a plurality of mounting holes. When the swivel seat 45 rotates to the docking position with the adapter ring, the adapter ring is moved downward, and the guide column 47 passes through the mounting hole. In this process, the guide column 47 is responsible for the docking guide between the adapter ring and the swivel cantilever 8. After that, the pressure plate 48 is sleeved on the outside of the guide column 47. The inner hole of the guide column 47 is threadedly connected with a shoulder bolt. The shoulder bolt presses the pressure plate, that is, the adapter ring is pressed by the pressure plate 48 and the shoulder bolt. The swivel seat 45 and the docking flange 46 are both fixedly connected with positioning ears, and the positioning ears are provided with positioning holes. When the swivel seat 45 rotates to the docking position with the adapter ring, the positioning holes of the two positioning ears are opposite, and the limit pin is inserted into the positioning hole.

[0076] The engine packaging method is as follows:

[0077] Step 1: After the engine is assembled, the lifting adapter ring is installed above the engine frame and connected and fastened to the engine frame, and the slewing cantilever 8 is rotated to the specified position to avoid interference;

[0078] Step 2: Use a four-claw straight beam hoist to hoist the lower box 4 (including the support frame) to the flatbed truck;

[0079] Step 3: Lift the adapter ring, lift the engine vertically, move it horizontally to the top of the support frame 7, slowly drop the product, avoid the interference part, rotate the slewing cantilever 8 to the docking position, and insert the limit pin;

[0080] Step 4: Slowly drop the product and guide it through the guide column 47 to ensure that the adapter ring and the slewing cantilever 8 are docked, and then the adapter ring is vertically compressed through the pressure plate 48 and bolts to ensure that it will not move during transportation;

[0081] Step 5: Install the clamp 5 to the engine nozzle collector, adjust the clamp 5 posture, and ensure that the connection is tight;

[0082] Step 6: Install the tie rod 6, connect the clamp 5 and the support frame 7 to ensure that the engine nozzle is fixed horizontally to ensure that it does not deviate during transportation;

[0083] Step 7: Check the engine status. If it is qualified, tighten all fasteners again and use lead wire to prevent it from falling off;

[0084] Step 8: Lift the lifting point of the middle box 3, insert the middle box 3 into the guide column of the lower box, and slowly buckle it;

[0085] Step 9: Connect the fasteners between the middle box 3 and the lower box 4 and use lead wire to prevent them from falling off;

[0086] Step 10: Lift the upper box 2 lifting point, insert the upper box 2 into the guide column of the middle box, and slowly buckle it;

[0087] Step 11: Lead the power lines of each engine sensor out of the transport box through the dedicated line outlet of the box and connect them to the mobile power supply assembly (1).

[0088] Step 12: Connect the fasteners between the upper box 2 and the middle box 3 and use lead wire to prevent them from falling off;

[0089] Step 13: Tighten the main box to ensure the tight connection between the box and the flatbed truck to ensure transportation safety for long-distance transportation;

[0090] Step 14: The unloading process is the opposite of the packing process.

[0091] The present invention realizes vertical transportation of large-sized, multi-machine parallel liquid rocket engines through reasonable structural design and packaging method, significantly improves engine assembly and transportation efficiency, and has the characteristics of easy operation and good reliability.

[0092] The contents not described in detail in this application specification belong to the common knowledge of those skilled in the art.

[0093] The present application is described in detail above in conjunction with specific implementation methods and exemplary examples, but these descriptions cannot be understood as limiting the present application. Those skilled in the art understand that, without departing from the spirit and scope of the present application, a variety of equivalent replacements, modifications or improvements can be made to the technical solution of the present application and its implementation methods, all of which fall within the scope of the present application. The scope of protection of the present application shall be subject to the attached claims.

Claims

1. A shock-absorbing packaging box for vertical transportation of large parallel liquid rocket engines, characterized in that: It comprises a box body and a mobile battery pack (1), wherein the box body is connected to a transport vehicle, and the box body comprises an upper box body (2), a middle box body (3), a lower box body (4), a clamp (5), a pull rod (6), a support frame (7), a cantilever (8) and an adapter ring; The support frame (7) is installed on the surface of the lower box body (4), and the top of the support frame (7) is used to install multiple cantilevers (8); the adapter ring is assembled and fixed with the engine, and the adapter ring is connected with the multiple cantilevers (8); A clamp (5) is installed outside the nozzle of the engine, a plurality of pull rods are provided, and the pull rod (6) is connected between the clamp (5) and the surface of the lower box (4), or the pull rod (6) is connected between the clamp (5) and the surface of the support frame (7); The middle box (3) is a structure with two ends open, one end of the middle box (3) is open and connected to the lower box (4), and the upper box (2) is a structure with one end open, the open end of the upper box (2) is connected to the other open end of the middle box (3), forming a box structure for accommodating the support frame (7) and the engine connected to the support frame (7); The mobile battery pack (1) is tightly connected to the transport vehicle; the mobile battery pack (1) provides power to the sensor connected to the engine.

2. A vertical transport shock-absorbing packaging box for large parallel liquid rocket engines according to claim 1, characterized in that: The lower box body (4) comprises a lower box body frame (27), a shock absorber support flange (28), a tie rod support (29) and a shock absorber (31); the shock absorber (31) is connected to the surface of the lower box body frame (27) via the shock absorber support flange (28); the support frame (7) is connected to the shock absorber (31); the tie rod support (29) is fixedly connected to the surface of the lower box body frame (27); the tie rod support (29) is used to connect the tie rod (6).

3. A vertical transport shock-absorbing packaging box for large parallel liquid rocket engines according to claim 2, characterized in that: The lower box body (4) further comprises a lower box body guide column (25) and a fastening support (26), wherein the lower box body guide column (25) and the fastening support (26) are fixedly connected to the edge position of the lower box body frame (27); The middle box body (3) comprises a middle box body frame (16), a middle box body guide sleeve (19) and a middle box body connecting lug, wherein the middle box body guide sleeve (19) is fixedly connected to the outer wall of the end of the middle box body frame (16) close to the lower box body (4), and the middle box body connecting lug is fixedly connected to the outer walls of the two end parts of the middle box body frame (16); The lower box guide column (25) cooperates with the middle box guide sleeve (19), and the fastening support (26) and the middle box connecting ear at one end of the middle box frame (16) are fixed by fasteners to fix the lower box (4) and the middle box (3).

4. A vertical transport shock-absorbing packaging box for large parallel liquid rocket engines according to claim 3, characterized in that: The middle box (3) also includes a guide column (18); The upper box body (2) comprises an upper box body frame (9), a connecting lug (11) and a guide sleeve (12), wherein the connecting lug (11) and the guide sleeve (12) are fixedly connected to the outer wall of the opening end of the upper box body frame (9); The guide column (18) cooperates with the guide sleeve (12), and the connecting ear (11) is fixed with the middle box connecting ear at one end of the middle box frame (16) through a fastener, so that the middle box (3) and the upper box (2) are fixed.

5. A vertical transport shock-absorbing packaging box for large parallel liquid rocket engines according to claim 4, characterized in that: The upper box (2) further comprises an upper box outer skin (10), an upper box inner skin (15), a ladder guardrail (13) and a lifting ring (14); the upper box outer skin (10) is fixedly connected to the outer wall of the upper box frame (9); the upper box inner skin (15) is bonded to the inner wall of the upper box frame (9); polyurethane foam insulation material is filled between the upper box outer skin (10) and the upper box inner skin (15); the ladder guardrail (13) is fixedly connected to a protrusion on the outer wall of the upper box frame (9); and the lifting ring (14) is fixedly connected to the top of the upper box frame (9).

6. A vertical transport shock-absorbing packaging box for large parallel liquid rocket engines according to claim 3, characterized in that: The middle box (3) comprises a middle box outer skin (17), a middle box inner skin (24), a ladder (21), a cabin door (22) and a middle box lifting ring (23); the middle box outer skin (17) is fixedly connected to the outer wall of the middle box frame (16); the middle box inner skin (24) is bonded to the inner wall of the middle box frame (16); polyurethane foam insulation material is filled between the middle box outer skin (17) and the middle box inner skin (24); the ladder (21) is fixedly connected to a protrusion on the outer wall of the middle box frame (16); the middle box frame (16) is provided with a door installation opening, and the cabin door (22) is installed at the door installation opening; and the middle box lifting ring (23) is connected to the outer side of the top of the middle box frame (16).

7. A vertical transport shock-absorbing packaging box for large parallel liquid rocket engines according to claim 1, characterized in that: The pull rod (6) includes a joint bearing (36), an adjusting screw (37) and a support tube (38); the adjusting screw (37) is threadedly connected to the support tube (38); one end of the adjusting screw (37) extending out of the support tube (38) is connected to a first ear via a joint bearing (36); the other end of the support tube (38) is connected to a second ear; the pull rod (6) is connected between the clamp (5) and the lower box (4), or between the clamp (5) and the support frame (7) via the first ear and the second ear.

8. A vertical transport shock-absorbing packaging box for large parallel liquid rocket engines according to claim 1, characterized in that: The support frame (7) comprises a support frame main frame (43), a swivel cantilever docking flange (41), a pull rod connecting seat and a shock absorber docking support (42); the support frame main frame (43) is a frame structure with an open top; the shock absorber docking support (42) is fixedly connected to the bottom of the support frame main frame (43); the shock absorber docking support (42) is used to connect the lower box (4); the swivel cantilever docking flange (41) is fixedly connected to the top of the support frame main frame (43); the swivel cantilever docking flange (41) is used to connect the adapter ring; the pull rod connecting seat is fixedly connected to the support frame main frame (43); the pull rod connecting seat is used to connect the pull rod (6).

9. A vertical transport shock-absorbing packaging box for large parallel liquid rocket engines according to claim 1, characterized in that: The slewing cantilever (8) comprises a slewing seat (45), a docking flange (46), a guide column (47) and a pressure plate (48). The docking flange (46) comprises a base and a flange body, and the base and the flange body are welded. The slewing seat (45) is a structure formed by welding a round tube and a rib plate. The base is inserted into the round tube, and the base and the round tube rotate relative to each other. The flange body is connected to the top of the support frame (7) by bolts. The guide column (47) is fixedly connected to the top of the slewing seat (45). The pressure plate (48) is sleeved on the outside of the guide column (47). The inner hole of the guide column (47) is threadedly connected with a shoulder bolt, and the shoulder bolt presses the pressure plate. The adapter ring is installed on the guide column (47), and the adapter ring is located between the slewing seat (45) and the pressure plate (48).

10. A packaging method for a large parallel liquid rocket engine, characterized in that: A large parallel liquid rocket engine vertical transport shock-absorbing packaging box according to any one of claims 1 to 9 is used for packaging, comprising: After the engine is assembled, the adapter ring is lifted, installed above the engine frame and connected to the frame and fastened, and the cantilever (8) is rotated to a specified position to avoid interference with the position of the adapter ring; Hoisting the lower box body (4) with the support frame (7) installed onto a transport vehicle; Lift the adapter ring, lift the engine vertically, and move it horizontally to the top of the support frame (7), slowly lower the adapter ring connected to the engine, avoid the interference position, rotate the slewing cantilever (8) to the docking position, and insert the limit pin between the slewing seat (45) and the docking flange (46); The adapter ring connected to the engine is slowly lowered and guided by the guide column (47) until the adapter ring and the slewing cantilever (8) are docked, and then the adapter ring is vertically compressed by the pressure plate (48) and bolts to ensure that it will not move during transportation; Install the clamp (5) to the engine nozzle collector; A pull rod (6) is installed between the clamp (5) and the support frame (7), and between the clamp (5) and the lower box body (4); Check the engine status. If the engine status is acceptable, tighten the shoulder bolts and the fasteners between the lower box (4) and the support frame (7) again and use lead wire to prevent them from falling off. Lift the middle box (3), insert the middle box (3) into the guide column (25) of the lower box, and slowly buckle it; after buckling it into place, connect the fasteners between the middle box (3) and the lower box (4) and use lead wire to prevent it from falling off; Lift the upper box (2), insert the upper box (2) into the guide column of the middle box, and slowly snap it into place; After being buckled into place, the power line of the engine sensor is led out of the transport box through the dedicated line outlet of the box and connected to the mobile battery pack (1); Connect the fasteners between the upper box body (2) and the middle box body (3) and use lead wire to prevent them from falling off; The box is fixedly connected to the transport vehicle.

Images