A large engine high-model test vacuum chamber door

Abstract

The present invention relates to the field of aerospace launch vehicle technology, and provides a large-scale engine high-model test vacuum chamber door, which at least comprises: a door body; a hanging base, the hanging base comprising a column and a crossbeam; a lifting mechanism, the connecting portion of the lifting mechanism being connected to the column, and the actuator of the lifting mechanism being connected to the crossbeam; a moving mechanism disposed on the crossbeam; a hanging mechanism, one end of which is connected to the moving mechanism and the other end of which is connected to the door body, and the door body can move along the axial direction of the crossbeam when driven by the moving mechanism; a door slot disposed below the door body; and a slot-filling mechanism disposed on the side of the door slot away from the vacuum chamber. The large-scale engine high-model test vacuum chamber door provided by the present invention solves the support and movement problems of large-sized and large-mass vacuum chamber doors, and does not cause the door to become stuck when opening and closing due to excessive deformation of the rotating shaft. Furthermore, there is no need to set tracks on the ground, and the slot-filling mechanism can flatten the door slot after the door body is opened, thereby avoiding affecting the entry and exit of engine tooling vehicles.

Description

Technical Field

[0001] The present invention relates to the technical field of space launch vehicles, and in particular to a large engine high-model test vacuum cabin door. Background Art

[0002] An engine high-altitude simulation test involves igniting the engine under vacuum conditions within a vacuum chamber and measuring various parameters. The vacuum chamber provides the vacuum environment for high-altitude testing. The engine utilizes a three-vertical model throughout the testing process: vertical transportation, vertical installation, and vertical ignition. A dedicated tool vehicle is used to transport the engine vertically from the preparation room to the test bench. The engine enters the vacuum chamber through the vacuum chamber door and reaches the base of the thrust rack. The tool vehicle then lifts the engine onto the test bench for vertical installation and ignition. In a vertical high-altitude engine test chamber, the engine utilizes a three-vertical model. The tool vehicle carrying the engine is relatively large, and the vacuum chamber door must accommodate the vehicle and be large enough to accommodate it. The overall weight of the door is considerable, reaching approximately 10 tons. Existing vacuum chamber doors utilize pivot supports and floor-rail motion for door opening and closing. However, for large, heavy vacuum chamber doors, the pivot support structure can cause significant deformation at the pivot, leading to door jamming after prolonged use. The ground-rail mobile structure requires a track on the ground, which will affect the entry and exit of the engine tooling vehicle. Therefore, it is necessary to design a large-scale and heavy-weight vacuum cabin door with more reliable support and without affecting the entry and exit of the tooling vehicle. Summary of the Invention

[0003] Therefore, the present invention aims to solve the problem in the prior art that vacuum cabin doors adopt a pivot support and ground rail movement method to realize the opening and closing of the door. However, for large-mass and large-sized vacuum cabin doors, the pivot support structure will cause excessive deformation at the pivot, and after long-term use, the door will gradually become stuck when opening and closing; and the ground rail movement structure requires the installation of tracks on the ground, which will affect the entry and exit of engine tooling vehicles, thereby providing a large engine high-model test vacuum cabin door.

[0004] In order to solve the above technical problems, the technical solutions of the present invention are as follows:

[0005] The present invention provides a large engine high-model test vacuum chamber door, which at least comprises: a door body; a hanging base, the hanging base comprising columns respectively arranged on both sides of the door body, and a crossbeam arranged on the tops of the two columns; a lifting mechanism, the top of each column is provided with the lifting mechanism, the connecting part of the lifting mechanism is connected to the column, and the executive part of the lifting mechanism is connected to the crossbeam; a moving mechanism, which is arranged on the crossbeam; a hanging mechanism, one end of which is connected to the moving mechanism and the other end is connected to the door body, and the door body is driven by the moving mechanism to move along the axial direction of the crossbeam; a door slot, which is arranged below the door body; the bottom of the door body is embedded in the door slot after the door body is closed, and the door body is pulled out of the door slot when the door body is opened; a slot filling mechanism, which is arranged on the side of the door slot away from the vacuum chamber, and the slot filling mechanism is suitable for flattening the door slot after the door body is pulled out of the door slot.

[0006] Furthermore, the lifting mechanism includes a base, a first drive motor, a screw, a worm gear pair and a beam seat; the base is arranged on the top surface of the column, and the first drive motor is installed on the base; the screw is arranged in a direction parallel to the column, and the screw is connected to the output shaft of the first drive motor through the worm gear pair; the beam seat is arranged on the beam and connected to the screw, the first drive motor drives the screw to rotate through the worm gear pair, and the screw drives the beam seat to rise and fall so that the beam can rise and fall synchronously.

[0007] Furthermore, the lifting mechanism also includes a plurality of guide rods; the guide rods are arranged in a direction parallel to the columns, one end of the guide rods is connected to the bottom of the beam seat, and the other end is inserted into the base, so that the beam seat can be lifted and lowered smoothly under the restriction of the guide rods.

[0008] Furthermore, the moving mechanism includes a hollow box frame, a first pulley, a second pulley, a mounting seat, a second driving motor and a gear rack pair; the first pulley and the second pulley are arranged in the hollow box frame at intervals along the length direction of the hollow box frame, and the hollow box frame can be slidably arranged on the crossbeam along the length direction of the crossbeam through the first pulley and the second pulley; the top of the hollow box frame is adapted to the position of the first pulley and the second pulley, and the mounting seat is provided; the second driving motor is provided on the crossbeam, and the output shaft of the second driving motor is connected to each of the mounting seats through the gear rack pair; when the second driving motor rotates forward, the mounting seat above the first pulley is tightened, and the hollow box frame moves in the door opening direction; when the second driving motor rotates reversely, the mounting seat above the second pulley is tightened, and the hollow box frame moves in the door closing direction.

[0009] Furthermore, the moving mechanism also includes a guide wheel assembly, which is arranged between the outer wall of the beam and the inner wall of the hollow box frame; the guide wheel assembly includes a guide wheel and a support seat, the support seat is connected to the inner wall of the hollow box frame, and the guide wheel is arranged on the side of the support seat facing the beam and the wheel surface of the guide wheel maintains contact with the outer wall of the beam.

[0010] Furthermore, the hanging mechanism includes a hanging arm and a balancing chain; there are two hanging arms, which are arranged parallel to each other and spaced apart, one end of each hanging arm is connected to the door body, and the other end is connected to the hollow box frame; the balancing chain is arranged parallel to the hanging arm and is located between the two hanging arms, one end of the balancing chain is connected to the door body, and the other end is connected to the hollow box frame.

[0011] Furthermore, the hanging arm includes a first hanging pin, an upper block, a height adjustment upper rod, a height adjustment block, a height adjustment lower rod, a lower block and a second hanging pin; the top of the upper block is connected to the hollow box frame through the first hanging pin; the top of the height adjustment upper rod is hingedly connected to the bottom of the upper block, and the bottom end of the height adjustment upper rod is threadedly connected to the top of the height adjustment block; the bottom end of the height adjustment block is threadedly connected to the top of the height adjustment lower rod; the bottom end of the height adjustment lower rod is hingedly connected to the top of the lower block; the bottom of the lower block is connected to the door body through the second hanging pin.

[0012] Furthermore, the hanging arm also includes a position adjustment bolt and a separation distance adjustment bolt; the position adjustment bolt is arranged on the side wall of the hollow box frame, and at least partially extends into the hollow box frame and abuts against the side wall of the upper block; a hollow connecting seat is provided on the top of the door body, and the lower block at least partially extends into the hollow connecting seat, and the lower block is connected to the hollow connecting seat through the second hanging pin; the separation distance adjustment bolt is arranged on the hollow connecting seat, and at least partially extends into the hollow connecting seat and abuts against the side wall of the lower block.

[0013] Furthermore, the large engine high-model test vacuum chamber door also includes a clamping mechanism, which is suitable for being arranged on the door frame of the vacuum chamber to apply a force to the door body to press the door frame after the door body is closed; the clamping mechanism includes a clamping body frame, a first cylinder, a slider, a hook, a power pin shaft, a guide groove and a guide pin; the clamping body frame is suitable for being arranged on the door frame of the vacuum chamber; the first cylinder is connected to the clamping body frame, and the piston of the first cylinder extends into the clamping body frame; the slider is slidably arranged in the clamping body frame and is connected to the piston of the first cylinder; the hook claw is flippably arranged at the end of the clamping body frame away from the first cylinder; the guide groove is arranged on the side wall of the clamping body frame; the power pin shaft passes through the inside and outside of the guide groove and is respectively connected to the slider and the hook claw; the guide pin passes through the inside and outside of the guide groove and is connected to the hook claw, and the guide pin is located on the side of the power pin shaft away from the cylinder.

[0014] Furthermore, the large engine high-model test vacuum chamber door also includes a hanging wire mechanism, which includes a support plate, a guide angle steel and a hanging wire pulley; one end of the support plate is connected to the crossbeam, and the other end extends in a direction away from the crossbeam; the guide angle steel is arranged on the support plate, and the guide angle steel and the crossbeam are arranged parallel to each other; a plurality of hanging wire pulleys are arranged on the guide angle steel at intervals along the length direction of the guide angle steel.

[0015] Furthermore, the slot filling mechanism includes a slot filling frame, a second cylinder and a door slot cover plate; the slot filling frame is arranged on the side of the door slot away from the vacuum chamber; the second cylinder is arranged on the slot filling frame; the door slot cover plate is flippably arranged on the slot filling frame and is connected to the piston of the second cylinder; when the piston of the second cylinder is extended, it drives the door slot cover plate to be lowered to flatten the door slot; when the piston of the second cylinder is retracted, it drives the door slot cover plate to be flipped up to let the door slot leak out.

[0016] The technical solution of the present invention has the following advantages:

[0017] The large-scale engine high-modulus test vacuum chamber door provided by the present invention utilizes a gantry composed of beams and columns as a hanging base, a lifting mechanism for adjusting the door height, and a moving mechanism and a hanging mechanism for hanging lateral movement of the door, thus solving the support and movement problems of large-scale, high-mass vacuum chamber doors. Compared with the prior art vacuum chamber doors that use a rotating shaft for support, the door opening and closing will not be stuck due to excessive deformation of the rotating shaft. Furthermore, compared with the prior art vacuum chamber doors that use a ground rail for movement, there is no need to set up a track on the ground, and a slot-filling mechanism can smooth the door slot after the door is opened, avoiding interference with the entry and exit of engine tooling vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Schematic diagram of a large engine high-model test vacuum chamber door and vacuum chamber in an embodiment of the present invention;

[0020] Figure 2 Schematic diagram of a large engine high-model test vacuum chamber door in an embodiment of the present invention;

[0021] Figure 3 Schematic diagram of the lifting mechanism in the door of a large engine high-model test vacuum chamber in an embodiment of the present invention;

[0022] Figure 4 Schematic diagram of the moving mechanism in the door of a large engine high-model test vacuum chamber in an embodiment of the present invention;

[0023] Figure 5 for Figure 4 Schematic diagram of the hollow box frame being set to transparent state;

[0024] Figure 6 for Figure 4 Schematic diagram of the positional relationship between the guide wheel assembly and the hollow box frame;

[0025] Figure 7 Schematic diagram of a hanging mechanism in a large engine high-model test vacuum chamber door in an embodiment of the present invention;

[0026] Figure 8 Schematic diagram of the clamping mechanism in the door of a large engine high-model test vacuum chamber in an embodiment of the present invention;

[0027] Figure 9 for Figure 8 A schematic diagram of the guide groove in FIG.

[0028] Figure 10 Schematic diagram of a large engine high-model test vacuum chamber door in a closed state in an embodiment of the present invention;

[0029] Figure 11 Schematic diagram of a large engine high-model test vacuum chamber door in an open state in an embodiment of the present invention;

[0030] Figure 12Schematic diagram of a slot filling mechanism in a large engine high-model test vacuum chamber door in an embodiment of the present invention;

[0031] Figure 13 Schematic diagram of the hanging wire mechanism in the large engine high-model test vacuum chamber door in an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1. Vacuum chamber; 101. Door frame;

[0034] 2. Door body;

[0035] 3. Hanging foundation; 301. Column; 302. Beam;

[0036] 4. Lifting mechanism; 401. Base; 402. First drive motor; 403. Lead screw; 404. Worm gear pair; 405. Crossbeam seat; 406. Guide rod;

[0037] 5. Moving mechanism; 501. Hollow box frame; 502. First pulley; 503. Second pulley; 504. Mounting seat; 505. Second drive motor; 506. Gear rack pair; 507. Guide wheel assembly; 5071. Guide wheel; 5072. Support seat; 508. Electromagnetic clutch.

[0038] 6. Suspension mechanism; 601. Suspension arm; 6010. First suspension pin; 6011. Upper block; 6012. Upper height adjustment rod; 6013. Height adjustment block; 6014. Lower height adjustment rod; 6015. Lower block; 6016. Second suspension pin; 6017. Position adjustment bolt; 6018. Separation distance adjustment bolt; 602. Balance chain; 603. Hollow connector;

[0039] 7. Door slot;

[0040] 8. Slot filling mechanism; 801. Slot filling frame; 802. Second cylinder; 803. Door slot cover;

[0041] 9. Clamping mechanism; 901. Clamping body frame; 902. First cylinder; 903. Slider; 904. Hook; 905. Power pin; 906. Guide groove; 907. Guide pin;

[0042] 10. Suspension wire mechanism; 1001. Support plate; 1002. Guide angle steel; 1003. Suspension wire pulley;

[0043] 11. Cables. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0047] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0048] like Figure 1 、 Figure 2As shown, this embodiment provides a large engine high-model test vacuum chamber door 1, which at least includes: a door body 2; a hanging base 3, the hanging base 3 including columns 301 respectively arranged on both sides of the door body 2, and a crossbeam 302 arranged on the top of the two columns 301; a lifting mechanism 4, each of the columns 301 is provided with the lifting mechanism 4 on the top, the connecting portion of the lifting mechanism 4 is connected to the column 301, and the executing portion of the lifting mechanism 4 is connected to the crossbeam 302; a moving mechanism 5, which is arranged on the crossbeam 302; A hanging mechanism 6 is connected to the moving mechanism 5 at one end and to the door body 2 at the other end. The door body 2 is driven by the moving mechanism 5 to move along the axial direction of the beam 302. A door slot 7 is arranged below the door body 2. After the door body 2 is closed, the bottom of the door body 2 is embedded in the door slot 7. When the door body 2 is opened, the door body 2 is pulled out from the door slot 7. A slot filling mechanism 8 is arranged on the side of the door slot 7 away from the vacuum chamber 1. The slot filling mechanism 8 is suitable for flattening the door slot 7 after the door body 2 is pulled out from the door slot 7.

[0049] The large engine high-model test vacuum chamber door 1 provided in this embodiment uses a crossbeam 302 and a column 301 to form a gantry as a hanging base 3, and uses a lifting mechanism 4 to adjust the height of the door body 2. The moving mechanism 5 and the hanging mechanism 6 are used to achieve the hanging lateral movement of the door body 2, solving the support and movement problems of the large-sized and large-mass vacuum chamber door 1. Compared with the vacuum chamber door 1 in the prior art that uses a rotating shaft support, the door opening and closing will not be stuck due to excessive deformation of the rotating shaft. Moreover, compared with the vacuum chamber door 1 in the prior art that uses a ground rail movement method, there is no need to set a track on the ground, and the slot filling mechanism 8 can smooth the door slot 7 after the door body 2 is opened, avoiding affecting the entry and exit of the engine tooling vehicle.

[0050] like Figure 3As shown, the lifting mechanism 4 includes a base 401, a first drive motor 402, a screw 403, a worm gear pair 404 and a crossbeam seat 405; for example, the base 401 can be a plate-like structure, and a through hole for the screw 403 and the guide rod 406 to pass through can be provided on the plate surface of the base 401, and the base 401 can be mounted on the top surface of the column 301 by bolts, and the first drive motor 402 can be mounted on the base 401 by bolts; the screw 403 is arranged in a direction parallel to the column 301, and the bottom end of the screw 403 can be inserted downward into the through hole on the base 401 and partially extend into the column 301, and the screw 403 is connected to the output shaft of the first drive motor 402 through the worm gear pair 404. For example, pin holes can be opened on both sides of the beam 302 that are compatible with the beam seat 405. The beam seat 405 can be installed on the beam 302 through a pin shaft and connected to the top of the screw 403. The first drive motor 402 drives the screw 403 to rotate through the worm gear pair 404. The screw 403 drives the beam seat 405 to rise and fall so that the beam 302 can rise and fall synchronously. When the beam 302 rises and falls, the door body 2 hung on the beam 302 can also rise and fall accordingly.

[0051] Among them, in order to ensure that the rising distances on both sides of the beam 302 are consistent and the beam 302 can rise smoothly without getting stuck, the first drive motor 402 can use a servo motor, and the first drive motors 402 on the two columns 301 use one driver. Under the control of the same pulse signal, the servo motors have the same speed, thereby achieving synchronous rising.

[0052] The lifting mechanism 4 further includes a plurality of guide rods 406 arranged parallel to the upright column 301. One end of each guide rod 406 is connected to the bottom of the crossbeam base 405, and the other end passes through a through hole in the base 401 and partially extends into the upright column 301, thereby enabling the crossbeam base 405 to be raised and lowered smoothly under the control of the guide rods 406. For example, four guide rods 406 may be provided, with the lead screw 403 located at the center of the base 401, and the four guide rods 406 evenly spaced around the lead screw 403. When the crossbeam 302 is raised or lowered, the guide rods 406 ensure smooth and precise lifting.

[0053] like Figure 4 、 Figure 5 as well as Figure 6As shown, the moving mechanism 5 includes a hollow box frame 501, a first pulley 502, a second pulley 503, a mounting seat 504, a second drive motor 505, and a rack and pinion pair 506. The hollow box frame 501 is a hollow frame structure, and the crossbeam 302 can be inserted into the hollow box frame 501 from one side of the hollow box frame 501 and pass through the other side of the hollow box frame 501. The first pulley 502 and the second pulley 503 are arranged in the hollow box frame 501 at intervals along the length direction of the hollow box frame 501. The hollow box frame 501 can be slidably arranged on the crossbeam 302 along the length direction of the crossbeam 302 through the first pulley 502 and the second pulley 503. For example, the first pulley 502 and the second pulley 503 can both be arranged near the top of the hollow box frame 501, and the wheel surfaces of the first pulley 502 and the second pulley 503 are in contact with the top surface of the crossbeam 302. The top of the hollow box frame 501 is adapted to the position of the first pulley 502 and the second pulley 503, and the mounting seat 504 is provided; the second drive motor 505 is provided on the beam 302, and the output shaft of the second drive motor 505 is connected to each of the mounting seats 504 through the gear rack pair 506. For example, the rack of the gear rack pair 506 can be a chain-like structure, and the chain rack can be formed into a ring, with one end connected to one of the mounting seats 504 and the other end connected to the other mounting seat 504. When the second drive motor 505 rotates forward, the rack between the mounting seat 504 and the gear located above the first pulley 502 is tightened, so that the mounting seat 504 located above the first pulley 502 is pulled tight, and the hollow box frame 501 moves in the door opening direction; when the second drive motor 505 rotates reversely, the rack between the mounting seat 504 and the gear located above the second pulley 503 is tightened, so that the mounting seat 504 located above the second pulley 503 is pulled tight, and the hollow box frame 501 moves in the door closing direction. Of course, in other embodiments, other drive structures can also be used to control the movement of the hollow box frame 501 along the crossbeam 302, such as an electrically or pneumatically controlled guide rail, such as a combination of pulleys and belts, such as replacing the first pulley 502 and the second pulley 503 with self-driven running wheels, etc.

[0054] The moving mechanism 5 further includes a guide wheel assembly 507, which is arranged between the outer side wall of the crossbeam 302 and the inner side wall of the hollow box frame 501; the guide wheel assembly 507 includes a guide wheel 5071 and a support seat 5072, the support seat 5072 is connected to the inner side wall of the hollow box frame 501, and the support seat 5072 can be installed on the hollow box frame 501 by bolts and gaskets. The guide wheel 5071 is arranged on the side of the support seat 5072 facing the crossbeam 302, and the wheel surface of the guide wheel 5071 maintains contact with the outer side wall of the crossbeam 302. For example, two guide wheel assemblies 507 can be set on both the front and rear sides of the hollow box frame 501. When in use, the normal position of the guide wheel 5071 can be adjusted by adjusting the thickness of the gasket, thereby ensuring that the hollow box frame 501 is in close contact with the guide wheel 5071 during movement to ensure the guiding effect.

[0055] An electromagnetic clutch 508 may be provided between the output shaft of the second drive motor 505 of the moving mechanism 5 and the rack and pinion pair 506 to disengage the second drive motor 505 from the gear. In the event of a power outage, the door can be manually opened or closed during test preparation or completion.

[0056] Among them, the moving mechanism 5 can also be configured with four travel switches, with each two travel switches forming a group. The two travel switches in each group respectively feedback the stop and limit position signals. During installation, one group is set at the end where the gate is opened, and one group is set at the end where the gate is closed to ensure the safe and smooth operation of the gate.

[0057] like Figure 7 As shown, the hanging mechanism 6 includes a hanging arm 601 and a balance chain 602; the hanging arms 601 are provided with two, and the two hanging arms 601 are arranged parallel to each other and spaced apart. One end of each hanging arm 601 is connected to the door body 2, and the other end is connected to the hollow box frame 501. The two spaced-apart hanging arms 601 mainly bear the weight of the door body 2 and can fix the door body 2 to the hollow box frame 501.

[0058] The balancing chain 602 is arranged parallel to the hanging arms 601 and located between the two hanging arms 601. One end of the balancing chain 602 is connected to the door body 2, and the other end is connected to the hollow box frame 501. For example, a bolt can be provided between the two hanging arms 601 on the hollow box frame 501 to serve as a suspension point for the balancing chain 602. The balancing chain 602 can be used to balance and limit the door body 2 during its back-and-forth swinging along the direction perpendicular to the sealing surface after the sealing mechanism is released.

[0059] For example, the hanging arm 601 includes a first hanging pin 6010, an upper block 6011, a height adjustment upper rod 6012, a height adjustment block 6013, a height adjustment lower rod 6014, a lower block 6015, and a second hanging pin 6016. For example, pin holes can be provided at the top of the upper block 6011 and at corresponding positions on the hollow box frame 501, the pin holes being adapted to fit with the first hanging pin 6010, and the top of the upper block 6011 being connected to the hollow box frame 501 via the first hanging pin 6010. For example, the top of the height adjustment upper rod 6012 can be hingedly connected to the bottom of the upper block 6011 via a rotating shaft. For example, the bottom end of the height adjustment upper rod 6012 can be provided with external threads, and the top end of the height adjustment block 6013 can be provided with an internally threaded hole, and the bottom end of the height adjustment upper rod 6012 can be threadedly connected to the top end of the height adjustment block 6013. For example, an external thread can be provided at the top of the height adjustment lower rod 6014, and a hole containing an internal thread can be provided at the bottom of the height adjustment block 6013. The bottom end of the height adjustment block 6013 can be threadedly connected to the top of the height adjustment lower rod 6014. For example, the bottom end of the height adjustment lower rod 6014 can be hingedly connected to the top of the lower block 6015 via a rotating shaft. For example, pin holes can be provided at the bottom of the lower block 6015 and at corresponding positions on the hollow box frame 501. The pin holes are adapted to fit the second hanging pin 6016. The bottom of the lower block 6015 can be connected to the door body 2 via the second hanging pin 6016. For example, the external thread on the height adjustment upper rod can be reverse threaded, while the external thread on the height adjustment lower rod 6014 can be normal threaded. They are respectively threadedly connected to the upper and lower portions of the height adjustment block 6013 and locked in place using a locking nut.

[0060] The hanging arm 601 further includes a position adjustment bolt 6017 and a separation distance adjustment bolt 6018. The position adjustment bolt 6017 is disposed on the side wall of the hollow box frame 501 and at least partially extends into the hollow box frame 501 and abuts against the side wall of the upper block 6011. For example, for each hanging arm 601, four position adjustment bolts 6017 can be disposed on the hollow box frame 501, with two position adjustment bolts 6017 forming a group. The two groups of position adjustment bolts 6017 can be disposed on the front and rear sides of the hollow box frame 501, respectively. A hollow connecting seat 603 is disposed at the top of the door body 2. For example, the hollow connecting seat 603 can be a box-like structure with an open top. The lower block 6015 at least partially extends into the hollow connecting seat 603 through the open end of the hollow connecting seat 603. The lower block 6015 is connected to the hollow connecting seat 603 via the second hanging pin 6016. The separation distance adjustment bolts 6018 are disposed on the hollow connecting seat 603 and at least partially extend into the hollow connecting seat 603 and abut against the sidewalls of the lower block 6015. For example, each hanging arm 601 can be provided with four separation distance adjustment bolts 6018 on the hollow connecting seat 603, with two separation distance adjustment bolts 6018 forming a set. The two sets of separation distance adjustment bolts 6018 can be disposed on the front and rear sides of the hollow connecting seat 603, respectively. During use, the position of the upper block 6011 and the lower block 6015 along the normal line of the door can be adjusted by tightening or loosening the position adjustment bolts 6017 or the separation distance adjustment bolts 6018. In the compressed state, the door body 2 is compressed against the door frame 101, with its center of gravity located inboard of the equilibrium position. After the compression is released, due to the action of gravity, the door body 2 swings outward, then inward, and then outward again until equilibrium is achieved. Moreover, the presence of the balancing chain 602 limits the swing amplitude, achieving smooth control of the swinging process of the door body 2. After balancing, the upper and lower support shafts and the center of gravity of the door body 2 are in a straight line, separated from the door frame 101 by a distance Δ (Δ is the set eccentric distance, which can be 15mm in this case). After the door body 2 is separated from the door frame 101 by a certain distance, it can be ensured that the sealing surface of the door body 2 is not scratched during movement. With this arrangement, based on the conditions of the hanging mechanism 6, a simple center of gravity self-balancing separation structure is used to achieve separation of the sealing surface before the door moves horizontally, ensuring that the sealing surface is not scratched during movement. In addition, the hanging mechanism 6 adopts a combination of an upper block 6011, a lower block 6015, a position adjustment bolt 6017, a separation distance adjustment bolt 6018, etc. to adjust the normal distance of the door body 2, and adjusts the height direction of the door body 2 through the height adjustment block 6013 and the positive and negative height adjustment upper rod and the height adjustment lower rod. Combined with the lateral movement ability of the hollow box frame 501, the normal, height and lateral adjustment capabilities of the door body 2 are formed, which can well achieve the centering effect of the door body 2 and the door frame 101.

[0061] Therefore, compared to the previous vacuum chamber door 1 that uses a preload spring to separate the sealing surface, large-mass, large-sized doors using this method are difficult to push and are likely to affect the sealing performance. If a normal separation mechanism is used, it is relatively complicated. The large engine high-modulus test vacuum chamber 1 door in this application is based on a hanging support method. The center of gravity of the door is pre-biased in the compressed state, and the center of gravity automatically balances after release to achieve sealing surface separation. The structure is simple and effective, and it does not affect the sealing effect.

[0062] like Figure 8 、 Figure 9As shown, the door of the large engine high-model test vacuum chamber 1 also includes a clamping mechanism 9, which is suitable for being arranged on the door frame 101 of the vacuum chamber 1 to apply a force to press the door frame 101 on the door body 2 after the door body 2 is closed; for example, multiple clamping mechanisms 9 can be arranged along the circumference of the entire door body 2 to improve the sealing between the door frame 101 and the door body 2 when the door body 2 is closed. In which, the clamping mechanism 9 includes a clamping body frame 901, a first cylinder 902, a slider 903, a hook 904, a power pin shaft 905, a guide groove 906 and a guide pin 907; for example, the clamping body frame 901 can be a box-type structure with a hollow interior, and the clamping body frame 901 can be installed on the door frame 101 of the vacuum chamber 1 by bolts; the first cylinder 902 and the clamping body frame 901 can be connected by bolts, and the piston of the first cylinder 902 extends into the inner cavity of the clamping body frame 901; the slider 903 is slidably arranged in the clamping body frame 901 and is connected to the piston of the first cylinder 902, and when the piston moves, it drives the slider 903 to move. For example, the connecting part of the hook 904 can be a U-shaped plate structure, which clamps the two parallel sides of the clamping body frame 901, and the hook 904 can be flipped and arranged at the end of the clamping body frame 901 away from the first cylinder 902; the guide groove 906 is arranged on the side wall of the clamping body frame 901 for installing the hook 904. For example, the guide groove 906 can be set on the two facing side walls of the clamping body frame 901 for installing the hook 904; the power pin shaft 905 passes through the inside and outside of the guide groove 906 and is respectively connected to the slider 903 and the hook claw 904; the guide pin 907 passes through the inside and outside of the guide groove 906 and is connected to the hook claw 904, and the guide pin 907 is located on the side of the power pin shaft 905 away from the cylinder. For example, the upper section of guide groove 906 can be curved, while the lower section can be straight. When the piston of first cylinder 902 pushes forward, the piston sequentially moves forward with slider 903, power pin 905, hook 904, and guide pin 907. When guide pin 907 enters the upper section of guide groove 906, it generates an upward torque on hook 904. As the piston moves forward, the upward torque gradually increases, overcoming the gravity torque to achieve upward tilt. Conversely, when the piston moves backward, hook 904 tilts downward and becomes taut.

[0063] like Figure 13As shown, the door of the large engine high-model test vacuum chamber 1 also includes a suspension mechanism 10, which includes a support plate 1001, a guide angle steel 1002, and a suspension pulley 1003. One end of the support plate 1001 is connected to the crossbeam 302, and the other end extends away from the crossbeam 302. The guide angle steel 1002 is arranged on the support plate 1001 and is arranged parallel to the crossbeam 302. A plurality of suspension pulleys 1003 are arranged on the guide angle steel 1002 at intervals along the length direction of the guide angle steel 1002. When in use, one end of the suspension wire can be fixed to the guide angle steel 1002, and the other end can pass through the wire clips of each suspension pulley 1003 in sequence and connect to the hollow box frame 501, so that the cable 11 moves synchronously with the hollow box frame 501, ensuring that the cable 11 is not broken during movement.

[0064] like Figure 10 、 Figure 11 as well as Figure 12 As shown, the slot filling mechanism 8 includes a slot filling frame 801, a second cylinder 802, and a door slot cover plate 803. The slot filling frame 801 is located on the side of the door slot 7 away from the vacuum chamber 1. The base 401 of the second cylinder 802 can be hingedly mounted on the slot filling frame 801. The door slot cover plate 803 is reversibly mounted on the slot filling frame 801 and connected to the piston of the second cylinder 802. When the piston of the second cylinder 802 extends, it drives the door slot cover plate 803 down to flatten the door slot 7. When the piston of the second cylinder 802 retracts, it drives the door slot cover plate 803 up to reveal the door slot 7. For example, a slot filling mechanism 8 can be installed on each side of the door body 2 to jointly drive the door slot cover plate 803 to operate. When the second cylinder 802 extends, the door slot cover plate 803 lies flat on the door slot 7. When the second cylinder 802 is retracted, it rotates the door slot cover plate 803 about its axis, causing it to rise upright. Because the sealing flange of the vacuum chamber 1 door utilizes a rectangular flange structure, the flange of the door body 2 needs to be recessed below the ground (300-400mm in this case) when the chamber is closed and sealed. Therefore, a door slot 7 exists below the door body 2, slightly wider than the door itself. To facilitate the entry and exit of the engine tooling vehicle, a flap-type door slot cover plate 803 is used, allowing the door slot 7 to be cleared or leveled when the vacuum chamber door is opened and closed.

[0065] The opening process of the door body 2 is as follows: the clamping mechanism 9 is released, and the door body 2 moves outward along the sealing surface direction of the vertical door frame 101. After the sealing surface of the door body 2 and the door frame 101 are completely separated (15mm in this case), the door body 2 rises until it is completely separated from the door groove 7, and then moves in the direction of opening the door. After the door body 2 moves into place, the door groove cover 803 flips down to be flat in place, completing the opening action of the door body 2.

[0066] The closing process of the door body 2 is as follows: the door slot cover plate 803 rises, and after the door slot cover plate 803 rises into place, the door body 2 automatically moves to close the door. After the door body 2 is closed into place, the door body 2 descends. After the door body 2 descends into place, the clamping mechanism 9 performs the clamping action. After all the clamping mechanisms 9 are clamped into place, the entire door closing operation is completed.

[0067] The large engine high-mold test vacuum chamber 1 door's lifting mechanism 4, moving mechanism 5, slot filling mechanism 8, and clamping mechanism 9 are all equipped with corresponding position sensors. The control system, with a programmable controller (PLC) as its core control element, is remotely controlled via a human-machine interface and Ethernet port. Programmable "one-button door opening" and "one-button door closing" functions simplify and secure complex door operations.

[0068] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A large engine high-model test vacuum cabin door, characterized in that: At least: Door body (2); A hanging foundation (3), the hanging foundation (3) comprising upright posts (301) respectively arranged on both sides of the door body (2), and a crossbeam (302) arranged on top of the two upright posts (301); A lifting mechanism (4), wherein the top of each column (301) is provided with the lifting mechanism (4), the connecting portion of the lifting mechanism (4) is connected to the column (301), and the executing portion of the lifting mechanism (4) is connected to the crossbeam (302); A moving mechanism (5) is arranged on the crossbeam (302); A hanging mechanism (6), one end of which is connected to the moving mechanism (5) and the other end of which is connected to the door body (2); the door body (2) is driven by the moving mechanism (5) to move along the axial direction of the beam (302); A door slot (7) is provided below the door body (2); when the door body (2) is closed, the bottom of the door body (2) is embedded in the door slot (7); when the door body (2) is opened, the door body (2) is pulled out of the door slot (7); A slot filling mechanism (8) is provided on a side of the door slot (7) away from the vacuum chamber (1), and the slot filling mechanism (8) is suitable for leveling the door slot (7) after the door body (2) is pulled out of the door slot (7); The moving mechanism (5) comprises a hollow box frame (501), a first pulley (502), a second pulley (503), a mounting seat (504), a second driving motor (505), and a gear rack pair (506); The first pulley (502) and the second pulley (503) are arranged in the hollow box frame (501) at intervals along the length direction of the hollow box frame (501), and the hollow box frame (501) can be slidably arranged on the crossbeam (302) along the length direction of the crossbeam (302) through the first pulley (502) and the second pulley (503); The top of the hollow box frame (501) is provided with the mounting seat (504) at a position adapted to the first pulley (502) and the second pulley (503); The second drive motor (505) is arranged on the crossbeam (302), and the output shaft of the second drive motor (505) is connected to each of the mounting seats (504) via the gear rack pair (506); When the second drive motor (505) rotates forward, the mounting seat (504) located above the first pulley (502) is tightened, and the hollow box frame (501) moves in the door-opening direction; when the second drive motor (505) rotates reversely, the mounting seat (504) located above the second pulley (503) is tightened, and the hollow box frame (501) moves in the door-closing direction; The moving mechanism (5) further includes a guide wheel assembly (507) disposed between the outer side wall of the crossbeam (302) and the inner side wall of the hollow box frame (501); The guide wheel assembly (507) comprises a guide wheel (5071) and a support seat (5072), wherein the support seat (5072) is connected to the inner side wall of the hollow box frame (501), and the guide wheel (5071) is arranged on a side of the support seat (5072) facing the crossbeam (302), and the wheel surface of the guide wheel (5071) is in contact with the outer side wall of the crossbeam (302); The hanging mechanism (6) comprises a hanging arm (601) and a balancing chain (602); Two hanging arms (601) are provided, and the two hanging arms (601) are arranged parallel to each other and spaced apart. One end of each hanging arm (601) is connected to the door body (2), and the other end is connected to the hollow box frame (501); The balancing chain (602) is arranged parallel to the hanging arms (601) and is located between the two hanging arms (601); one end of the balancing chain (602) is connected to the door body (2), and the other end is connected to the hollow box frame (501); The hanging arm (601) comprises a first hanging pin (6010), an upper block (6011), a height adjustment upper rod (6012), a height adjustment block (6013), a height adjustment lower rod (6014), a lower block (6015), and a second hanging pin (6016); The top of the upper block (6011) is connected to the hollow box frame (501) via the first hanging pin (6010); The top end of the height adjustment upper rod (6012) is hingedly connected to the bottom end of the upper block (6011), and the bottom end of the height adjustment upper rod (6012) is threadedly connected to the top end of the height adjustment block (6013); The bottom end of the height adjustment block (6013) is threadedly connected to the top end of the height adjustment lower rod (6014); The bottom end of the height adjustment lower rod (6014) is hingedly connected to the top of the lower block (6015); The bottom of the lower block (6015) is connected to the door body (2) via the second hanging pin (6016); The hanging arm (601) further includes a position adjustment bolt (6017) and a separation distance adjustment bolt (6018); The position adjustment bolt (6017) is arranged on the side wall of the hollow box frame (501), and at least partially extends into the hollow box frame (501) and abuts against the side wall of the upper block (6011); A hollow connecting seat (603) is provided on the top of the door body (2), the lower block (6015) at least partially extends into the hollow connecting seat (603), and the lower block (6015) is connected to the hollow connecting seat (603) via the second hanging pin (6016); The separation distance adjustment bolt (6018) is arranged on the hollow connecting seat (603), and at least partially extends into the hollow connecting seat (603) and abuts against the side wall of the lower block (6015); The slot filling mechanism (8) comprises a slot filling frame (801), a second cylinder (802) and a door slot cover plate (803); The slot filling frame (801) is arranged on a side of the door slot (7) away from the vacuum chamber (1); The second cylinder (802) is arranged on the slot filling frame (801); The door slot cover plate (803) is flippably arranged on the slot filling machine frame (801) and is connected to the piston of the second cylinder (802); When the piston of the second cylinder (802) extends, it drives the door slot cover plate (803) to be lowered to flatten the door slot (7); when the piston of the second cylinder (802) retracts, it drives the door slot cover plate (803) to be flipped up to allow the door slot (7) to leak out.

2. The large engine high-modulus test vacuum cabin door according to claim 1, characterized in that: The lifting mechanism (4) comprises a base (401), a first drive motor (402), a lead screw (403), a worm gear pair (404), and a beam seat (405); The base (401) is arranged on the top surface of the column (301), and the first driving motor (402) is installed on the base (401); The lead screw (403) is arranged in a direction parallel to the column (301), and the lead screw (403) is connected to the output shaft of the first drive motor (402) through the worm gear pair (404); The crossbeam seat (405) is arranged on the crossbeam (302) and is connected to the lead screw (403). The first drive motor (402) drives the lead screw (403) to rotate through the worm gear pair (404). The lead screw (403) drives the crossbeam seat (405) to rise and fall, so that the crossbeam (302) moves up and down synchronously.

3. The large engine high-modulus test vacuum cabin door according to claim 2, characterized in that: The lifting mechanism (4) further includes a plurality of guide rods (406); The guide rod (406) is arranged in a direction parallel to the column (301), one end of the guide rod (406) is connected to the bottom of the beam seat (405), and the other end is inserted into the base (401), so that the beam seat (405) can be smoothly raised and lowered under the restriction of the guide rod (406).

4. The large engine high-modulus test vacuum cabin door according to claim 1, characterized in that: It also includes a clamping mechanism (9) adapted to be arranged on a door frame (101) of the vacuum chamber (1) so as to apply a force to the door body (2) to press the door frame (101) after the door body (2) is closed; The clamping mechanism (9) comprises a clamping body frame (901), a first cylinder (902), a slider (903), a hook (904), a power pin (905), a guide groove (906), and a guide pin (907); The clamping body frame (901) is suitable for being arranged on the door frame (101) of the vacuum chamber (1); The first cylinder (902) is connected to the clamping body frame (901), and the piston of the first cylinder (902) extends into the clamping body frame (901); The slider (903) is slidably disposed within the clamping body frame (901) and is connected to the piston of the first cylinder (902); The hook (904) is flippably arranged at one end of the clamping body frame (901) away from the first cylinder (902); The guide groove (906) is provided on the side wall of the clamping body frame (901); The power pin (905) passes through the inside and outside of the guide groove (906) and is respectively connected to the slider (903) and the hook (904); The guide pin (907) passes through the inside and outside of the guide groove (906) and is connected to the hook (904), and the guide pin (907) is located on the side of the power pin shaft (905) away from the cylinder.

5. The large engine high-modulus test vacuum cabin door according to claim 1, characterized in that: It also includes a hanging wire mechanism (10), the hanging wire mechanism (10) including a supporting plate (1001), a guide angle steel (1002), and a hanging wire pulley (1003); One end of the support plate (1001) is connected to the crossbeam (302), and the other end extends in a direction away from the crossbeam (302); The guide angle steel (1002) is arranged on the supporting plate (1001), and the guide angle steel (1002) and the crossbeam (302) are arranged parallel to each other; A plurality of suspension wire pulleys (1003) are arranged at intervals on the guide angle steel (1002) along the length direction of the guide angle steel (1002).

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