Large engine high modulus test vacuum chamber gate

Abstract

The invention relates to the technical field of spaceflight carrier rockets, and provides a large engine high modulus test vacuum chamber gate which at least comprises a gate body. The hanging foundation comprises a stand column and a cross beam; a connecting part of the lifting mechanism is connected with the stand column, and an executing part of the lifting mechanism is connected with the cross beam; the moving mechanism is arranged on the cross beam; one end of the hanging mechanism is connected with the moving mechanism, the other end of the hanging mechanism is connected with the door body, and the door body is driven by the moving mechanism to move in the axial direction of the cross beam; the door groove is formed below the door body; the groove filling mechanism is arranged on the side, away from the vacuum chamber, of the door groove. According to the large engine high modulus test vacuum chamber gate, the supporting and moving problems of the large-size and large-mass vacuum chamber gate are solved, and the problem of clamping stagnation of opening and closing of the gate due to excessive deformation of the rotating shaft is solved. And moreover, a track does not need to be arranged on the ground, the groove filling mechanism can flatten the door groove after the door body is opened, and entering and exiting of the engine tool car are prevented from being affected.

Description

Technical Field

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

[0002] An engine high-altitude simulation test refers to an experiment in which an engine is ignited in a vacuum chamber under a vacuum state and various parameters are measured. The vacuum chamber is a device that provides a vacuum environment for high-mode tests. The engine adopts a three-vertical mode of vertical transportation, vertical installation, and vertical ignition throughout the test process. The engine is lifted onto the test bench using a special tooling vehicle, which is vertically transported from the preparation room to the test bench, and enters the interior of the vacuum chamber through the vacuum chamber door and reaches below the thrust stand. It is lifted onto the test bench by the tooling vehicle to achieve vertical installation and vertical ignition. In a vertical engine high-mode test vacuum chamber, the engine adopts a three-vertical mode, and the tooling vehicle for loading the engine has a large size. The vacuum chamber door needs to allow the tooling vehicle for loading the engine to pass through, and its size needs to cover the tooling vehicle for loading the engine. The overall weight of the door is relatively large, reaching about 10t. The vacuum chamber door in the prior art uses a rotary shaft type support and a ground rail type movement method to realize the opening and closing of the door. However, for a large-mass and large-size vacuum chamber door, the rotary shaft type support structure will cause excessive deformation at the rotary shaft, and problems such as jamming of the door opening and closing will gradually occur after long-term use. The ground rail type movement structure requires tracks to be set on the ground, which will affect the entry and exit of the engine tooling vehicle. Therefore, it is necessary to design a large-size and large-mass vacuum chamber door with more reliable support and no impact on the entry and exit of the tooling vehicle. Summary of the Invention

[0003] Therefore, the present invention aims to solve the problem that the vacuum chamber door in the prior art uses a rotary shaft type support and a ground rail type movement method to realize the opening and closing of the door. However, for a large-mass and large-size vacuum chamber door, the rotary shaft type support structure will cause excessive deformation at the rotary shaft, and problems such as jamming of the door opening and closing will gradually occur after long-term use. The ground rail type movement structure requires tracks to be set on the ground, which will affect the entry and exit of the engine tooling vehicle, and thus provides a large engine high-mode test vacuum chamber door.

[0004] To solve the above technical problems, the technical solution of the present invention is as follows: The present invention provides a large engine high-fidelity test vacuum chamber door, which at least includes: a door body; a hanging foundation, the hanging foundation includes columns respectively arranged on both sides of the door body, and a cross beam 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 executing part of the lifting mechanism is connected to the cross beam; a moving mechanism arranged on the cross beam; a hanging mechanism, one end is connected to the moving mechanism, and the other end is connected to the door body, and the door body can move along the axial direction of the cross beam under the drive of the moving mechanism; a door groove arranged under the door body; after the door body is closed, the bottom of the door body is embedded in the door groove, and when the door body is opened, the door body is pulled out of the door groove; a filling groove mechanism arranged on the side of the door groove away from the vacuum chamber, and the filling groove mechanism is adapted to level the door groove after the door body is pulled out of the door groove.

[0005] Further, the lifting mechanism includes a base, a first driving motor, a lead screw, a worm and worm gear pair, and a cross beam seat; the base is arranged on the top surface of the column, and the first driving motor is installed on the base; the lead screw is arranged parallel to the column, and the lead screw is connected to the output shaft of the first driving motor through the worm and worm gear pair; the cross beam seat is arranged on the cross beam and is connected to the lead screw, and the first driving motor drives the lead screw to rotate through the worm and worm gear pair, and the lead screw drives the cross beam seat to lift so that the cross beam moves synchronously up and down.

[0006] Further, the lifting mechanism further includes a plurality of guide rods; the guide rods are arranged parallel to the column, one end of the guide rod is connected to the bottom of the cross beam seat, and the other end is inserted into the base so that the cross beam seat can lift smoothly under the restriction of the guide rods.

[0007] Further, the moving mechanism includes a hollow box frame, a first pulley, a second pulley, a mounting seat, a second driving motor, and a gear and rack pair; the first pulley and the second pulley are arranged at intervals along the length direction of the hollow box frame inside the hollow box frame, and the hollow box frame can be slidably arranged on the cross beam along the length direction of the cross beam through the first pulley and the second pulley; mounting seats are arranged at the positions of the hollow box frame corresponding to the first pulley and the second pulley; the second driving motor is arranged on the cross beam, and the output shaft of the second driving motor is connected to each mounting seat through the gear and 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.

[0008] Further, the moving mechanism further includes a guide wheel assembly disposed between the outer sidewall of the cross beam and the inner sidewall 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 sidewall of the hollow box frame, the guide wheel is disposed on a surface of the support seat facing the cross beam, and the wheel surface of the guide wheel is in contact with the outer sidewall of the cross beam.

[0009] Further, the hanging mechanism includes a hanging arm and a balance chain; there are two hanging arms, the two hanging arms are arranged in parallel at intervals, one end of each hanging arm is connected to the door body, and the other end is connected to the hollow box frame; the balance chain is arranged parallel to the hanging arms and is located between the two hanging arms, one end of the balance chain is connected to the door body, and the other end is connected to the hollow box frame.

[0010] Further, 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 end of the height adjustment upper rod is hinged to the bottom of the upper block, and the bottom end of the height adjustment upper rod is threadedly connected to the top end of the height adjustment block; the bottom end of the height adjustment block is threadedly connected to the top end of the height adjustment lower rod; the bottom end of the height adjustment lower rod is hinged to the top of the lower block; the bottom of the lower block is connected to the door body through the second hanging pin.

[0011] Further, the hanging arm further includes a position adjustment bolt and a separation distance adjustment bolt; the position adjustment bolt is disposed on the sidewall of the hollow box frame and at least partially extends into the hollow box frame and abuts against the sidewall of the upper block; a hollow connecting seat is disposed on the top of the door body, at least part of the lower block 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 disposed on the hollow connecting seat and at least partially extends into the hollow connecting seat and abuts against the sidewall of the lower block.

[0012] Furthermore, the large engine high-fidelity test vacuum chamber door further includes a clamping mechanism adapted to be disposed on the door frame of the vacuum chamber to apply a force pressing the door body against 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 adapted to be disposed 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 disposed in the clamping body frame and is connected to the piston of the first cylinder; the hook is rotatably disposed at one end of the clamping body frame away from the first cylinder; the guide groove is disposed 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; the guide pin passes through the inside and outside of the guide groove and is connected to the hook, and the guide pin is located on the side of the power pin shaft away from the cylinder.

[0013] Furthermore, the large engine high-fidelity test vacuum chamber door further includes a wire hanging mechanism, and the wire hanging mechanism includes a support plate, a guide angle steel and wire hanging pulleys; one end of the support plate is connected to the cross beam, and the other end extends in a direction away from the cross beam; the guide angle steel is disposed on the support plate, and the guide angle steel is arranged parallel to the cross beam; a plurality of the wire hanging pulleys are spaced along the length direction of the guide angle steel on the guide angle steel.

[0014] Furthermore, the groove filling mechanism includes a groove filling machine frame, a second cylinder and a door groove cover plate; the groove filling machine frame is disposed on one side of the door groove away from the vacuum chamber; the second cylinder is disposed on the groove filling machine frame; the door groove cover plate is rotatably disposed on the groove filling machine frame and is connected to the piston of the second cylinder; when the piston of the second cylinder extends, it drives the door groove cover plate to be lowered to level the door groove; when the piston of the second cylinder retracts, it drives the door groove cover plate to be turned up to expose the door groove.

[0015] The technical solution of the present invention has the following advantages: The large engine high-fidelity test vacuum chamber door provided by the present invention uses a gantry composed of a cross beam and a column as a hanging foundation, and uses a lifting mechanism to realize the height adjustment of the door body, and uses a moving mechanism and a hanging mechanism to realize the hanging horizontal movement of the door body, solving the problems of support and movement of large-size and large-quality vacuum chamber doors; compared with the vacuum chamber door in the prior art using a shaft-type support, there will be no problem of jamming of the door opening and closing due to excessive deformation of the shaft. Moreover, compared with the vacuum chamber door in the prior art using a ground rail type moving method, there is no need to set a track on the ground, and the groove filling mechanism can level the door groove after the door body is opened, avoiding affecting the entry and exit of the engine tooling vehicle. Description of the Drawings

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 Schematic diagram of the large engine high-fidelity test vacuum chamber door and the vacuum chamber in the embodiment of the present invention; Figure 2 Schematic diagram of the large engine high-fidelity test vacuum chamber door in the embodiment of the present invention; Figure 3 Schematic diagram of the lifting mechanism in the large engine high-fidelity test vacuum chamber door in the embodiment of the present invention; Figure 4 Schematic diagram of the moving mechanism in the large engine high-fidelity test vacuum chamber door in the embodiment of the present invention; Figure 5 For Figure 4 Schematic diagram when the hollow box frame is adjusted to a transparent state in; Figure 6 For Figure 4 Schematic diagram of the positional relationship between the guide wheel assembly and the hollow box frame in; Figure 7 Schematic diagram of the hanging mechanism in the large engine high-fidelity test vacuum chamber door in the embodiment of the present invention; Figure 8 Schematic diagram of the clamping mechanism in the large engine high-fidelity test vacuum chamber door in the embodiment of the present invention; Figure 9 For Figure 8 Schematic diagram of the guide groove in; Figure 10 Schematic diagram when the large engine high-fidelity test vacuum chamber door is in the closed state in the embodiment of the present invention; Figure 11 Schematic diagram when the large engine high-fidelity test vacuum chamber door is in the open state in the embodiment of the present invention; Figure 12 Schematic diagram of the groove filling mechanism in the large engine high-fidelity test vacuum chamber door in the embodiment of the present invention; Figure 13 Schematic diagram of the wire hanging mechanism in the large engine high-fidelity test vacuum chamber door in the embodiment of the present invention. Explanation of reference numerals: 1. Vacuum chamber; 101. Door frame; 2. Door body; 3. Hanging foundation; 301. Column; 302. Cross beam; 4. Lifting mechanism; 401. Base; 402. First driving motor; 403. Lead screw; 404. Worm and worm gear pair; 405. Cross beam seat; 406. Guide rod; 5. Moving mechanism; 501. Hollow box frame; 502. First pulley; 503. Second pulley; 504. Mounting seat; 505. Second driving motor; 506. Gear and rack pair; 507. Guide wheel assembly; 5071. Guide wheel; 5072. Support seat; 508. Electromagnetic clutch.

[0018] 6. Hanging mechanism; 601. Hanging arm; 6010. First hanging pin; 6011. Upper block; 6012. Upper height adjustment rod; 6013. Height adjustment block; 6014. Lower height adjustment rod; 6015. Lower block; 6016. Second hanging pin; 6017. Position adjustment bolt; 6018. Separation distance adjustment bolt; 602. Balance chain; 603. Hollow connecting seat; 7. Door groove; 8. Groove filling mechanism; 801. Groove filling frame; 802. Second cylinder; 803. Door groove cover plate; 9. Clamping mechanism; 901. Clamping body frame; 902. First cylinder; 903. Slide block; 904. Hook claw; 905. Power pin; 906. Guide groove; 907. Guide pin; 10. Hanging wire mechanism; 1001. Support plate; 1002. Guide angle steel; 1003. Hanging wire pulley; 11. Cable. Detailed implementation mode The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0019] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installation", "connection", and "linkage" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] As Figure 1 , Figure 2 shown, this embodiment provides a large engine high-fidelity test vacuum chamber 1 door, which at least includes: a door body 2; a hanging foundation 3, the hanging foundation 3 includes columns 301 respectively arranged on both sides of the door body 2, and a cross beam 302 arranged on the tops of the two columns 301; a lifting mechanism 4, the top of each column 301 is provided with the lifting mechanism 4, the connecting part of the lifting mechanism 4 is connected to the column 301, and the actuating part of the lifting mechanism 4 is connected to the cross beam 302; a moving mechanism 5, arranged on the cross beam 302; a hanging mechanism 6, one end is connected to the moving mechanism 5, and the other end is connected to the door body 2, and the door body 2 can move along the axial direction of the cross beam 302 under the drive of the moving mechanism 5; a door slot 7, arranged under 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, and when the door body 2 is opened, the door body 2 is pulled out from the door slot 7; a slot filling mechanism 8, arranged on the side of the door slot 7 away from the vacuum chamber 1, and the slot filling mechanism 8 is adapted to level the door slot 7 after the door body 2 is pulled out from the door slot 7.

[0023] The large engine high-fidelity test vacuum chamber 1 door provided by this embodiment uses the cross beam 302 and columns 301 to form a gantry as the hanging foundation 3, uses the lifting mechanism 4 to realize the height adjustment of the door body 2, and uses the moving mechanism 5 and the hanging mechanism 6 to realize the hanging type lateral movement of the door body 2, solving the problems of support and movement of the large-size and large-mass vacuum chamber 1 door; compared with the vacuum chamber 1 door in the prior art that uses a rotary shaft type support, there will be no problem of jamming when the door opens and closes due to excessive deformation of the rotary shaft. Moreover, compared with the vacuum chamber 1 door in the prior art that uses a ground rail type movement method, there is no need to set tracks on the ground, and the slot filling mechanism 8 can level the door slot 7 after the door body 2 is opened, avoiding affecting the entry and exit of the engine tooling vehicle.

[0024] As Figure 3As shown in the figure, the lifting mechanism 4 includes a base 401, a first driving motor 402, a lead screw 403, a worm and worm gear pair 404, and a crossbeam seat 405. For example, the base 401 can be a plate-like structure, and through holes for the lead screw 403 and the guide rod 406 to pass through can be provided on the plate surface of the base 401. The base 401 can be installed on the top surface of the column 301 by bolts, and the first driving motor 402 can be installed on the base 401 by bolts. The lead screw 403 is arranged parallel to the column 301. The bottom end of the lead screw 403 can be inserted downward into the through hole on the base 401 and partially extend into the column 301. The lead screw 403 is connected to the output shaft of the first driving motor 402 through the worm and worm gear pair 404. For example, pin holes can be opened on the two side surfaces of the crossbeam 302 adapted to the crossbeam seat 405. The crossbeam seat 405 can be installed on the crossbeam 302 through a pin shaft and is connected to the top end of the lead screw 403. The first driving motor 402 drives the lead screw 403 to rotate through the worm and worm gear pair 404. The lead screw 403 drives the crossbeam seat 405 to lift so that the crossbeam 302 can move up and down synchronously. When the crossbeam 302 moves up and down, the door body 2 hanging on the crossbeam 302 can also move up and down accordingly.

[0025] Among them, to ensure that the rising distances on both sides of the crossbeam 302 are the same and enable the crossbeam 302 to rise smoothly without jamming, the first driving motor 402 can be a servo motor, and the first driving motors 402 on the two columns 301 share one driver. Under the control of the same pulse signal, the rotational speeds of the servo motors are the same, thus achieving synchronous rising.

[0026] Among them, the lifting mechanism 4 further includes a plurality of guide rods 406. The guide rods 406 are arranged parallel to the column 301. One end of the guide rod 406 is connected to the bottom of the crossbeam seat 405, and the other end passes through the base 401 through the through hole on the base 401 and partially extends into the column 301, so that the crossbeam seat 405 can lift smoothly under the restriction of the guide rod 406. For example, four guide rods 406 can be provided. The lead screw 403 can be located at the center of the base 401, and the four guide rods 406 are evenly arranged around the lead screw 403. When the crossbeam 302 moves up and down, under the action of the guide rod 406, smooth and precise lifting can be achieved.

[0027] Such as Figure 4 、 Figure 5 and 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 gear-rack pair 506. Among them, the hollow box frame 501 is a frame structure with a hollow interior, and the cross beam 302 can be inserted into the hollow box frame 501 from one side and pass through the hollow box frame 501 from the other side. The first pulley 502 and the second pulley 503 are arranged at intervals along the length direction of the hollow box frame 501 inside the hollow box frame 501, and the hollow box frame 501 is slidably arranged on the cross beam 302 along the length direction of the cross beam 302 through the first pulley 502 and the second pulley 503. For example, both the first pulley 502 and the second pulley 503 can 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 cross beam 302. Mounting seats 504 are arranged at positions on the top of the hollow box frame 501 that are adapted to the positions of the first pulley 502 and the second pulley 503. The second drive motor 505 is arranged on the cross beam 302, and the output shaft of the second drive motor 505 is connected to each mounting seat 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-like rack can form a loop, with one end connected to one mounting seat 504 and the other end connected to another mounting seat 504. When the second drive motor 505 rotates forward, the rack between the mounting seat 504 above the first pulley 502 and the gear tightens, so that the mounting seat 504 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 in reverse, the rack between the mounting seat 504 above the second pulley 503 and the gear tightens, so that the mounting seat 504 above the second pulley 503 is tightened, 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 cross beam 302. For example, an electrically or pneumatically controlled guide rail, for example, a combination of a belt pulley and a belt, for example, replacing the first pulley 502 and the second pulley 503 with self-driven walking wheels, etc.

[0028] The moving mechanism 5 further comprises a guide wheel assembly 507, which is arranged between the outer side wall of the cross beam 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, 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 cross beam 302, and the wheel surface of the guide wheel 5071 keeps in contact with the outer side wall of the cross beam 302. For example, two guide wheel assemblies 507 can be arranged on both the front and rear sides of the hollow box frame 501, and when in use, the normal position of the guide wheel 5071 can be adjusted by adjusting the thickness of the gasket, so as to ensure that the hollow box frame 501 fits the guide wheel 5071 during movement to ensure the guiding effect.

[0029] An electromagnetic clutch 508 may be provided between the output shaft of the second drive motor 505 of the mobile mechanism 5 and the gear rack pair 506 to achieve the disengagement of the second drive motor 505 and the gear. When a power outage occurs and the gate needs to be opened or closed during test preparation or completion, the gate can be pushed manually.

[0030] Among them, the moving mechanism 5 can also be configured with four travel switches, each two travel switches form a group, and 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.

[0031] like Figure 7 As shown, the hanging mechanism 6 includes a hanging arm 601 and a balance chain 602; two hanging arms 601 are provided, and the two hanging arms 601 are arranged parallel to each other and spaced apart, and 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 hanging arms 601 arranged spaced apart mainly bear the weight of the door body 2 and can fix the door body 2 on the hollow box frame 501.

[0032] The balancing chain 602 is arranged in parallel with 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. For example, a bolt can be provided in the middle of the two hanging arms 601 on the hollow box frame 501 as a hanging point of the balancing chain 602. The balancing chain 602 can be used for balancing and limiting the door body 2 when it swings back and forth along the direction perpendicular to the sealing surface after the sealing mechanism is released.

[0033] 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 may be provided at the top of the upper block 6011 and corresponding positions on the hollow box frame 501, and the pin holes are adapted to the first hanging pin 6010, and the top of the upper block 6011 is connected to the hollow box frame 501 through the first hanging pin 6010. For example, the top end of the height adjustment upper rod 6012 may be hingedly connected to the bottom of the upper block 6011 through a rotating shaft. For example, an external thread may be provided at the bottom end of the height adjustment upper rod 6012, and a hole with an internal thread is provided at the top end of the height adjustment block 6013, and the bottom end of the height adjustment upper rod 6012 is threadedly connected to the top end of the height adjustment block 6013. For example, an external thread may be provided at the top end of the height adjustment lower rod 6014, and a hole with an internal thread is provided at the bottom end of the height adjustment block 6013, and the bottom end of the height adjustment block 6013 is threadedly connected to the top end of the height adjustment lower rod 6014. For example, the bottom end of the height adjustment lower rod 6014 may be hingedly connected to the top of the lower block 6015 through a rotating shaft. For example, pin holes may be provided at the bottom of the lower block 6015 and corresponding positions on the hollow box frame 501, and the pin holes are adapted to the second hanging pin 6016, and the bottom of the lower block 6015 may be connected to the door body 2 through the second hanging pin 6016. For example, the external thread on the height adjustment upper rod may be a reverse thread, and the external thread on the height adjustment lower rod 6014 may be a right-hand thread, which are respectively threadedly connected to the upper and lower parts of the height adjustment block 6013, and the positions are locked by lock nuts.

[0034] Among them, 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. For example, for each hanging arm 601, four position adjustment bolts 6017 can be arranged on the hollow box frame 501. Every two position adjustment bolts 6017 form a group, and the two groups of position adjustment bolts 6017 can be respectively arranged on the front and rear sides of the hollow box frame 501. Among them, a hollow connection seat 603 is arranged at the top of the door body 2. For example, the hollow connection seat 603 can be a box structure with an open top. The lower block 6015 at least partially extends into the hollow connection seat 603 from the open mouth of the hollow connection seat 603, and the lower block 6015 is connected to the hollow connection seat 603 through the second hanging pin 6016. The separation distance adjustment bolt 6018 is arranged on the hollow connection seat 603 and at least partially extends into the hollow connection seat 603 and abuts against the side wall of the lower block 6015. For example, for each hanging arm 601, four separation distance adjustment bolts 6018 can be arranged on the hollow connection seat 603. Every two separation distance adjustment bolts 6018 form a group, and the two groups of separation distance adjustment bolts 6018 can be respectively arranged on the front and rear sides of the hollow connection seat 603. During use, the adjustment of the positions of the upper block 6011 and the lower block 6015 along the normal line of the gate can be realized by tightening or loosening the position adjustment bolt 6017 or the separation distance adjustment bolt 6018. In the pressed state, the door body 2 is pressed against the door frame 101, and the center of gravity is located inside the balance position. After the pressing is released, due to the action of the gravity moment, the door body 2 swings outwards, then inwards, and then outwards reciprocally until it reaches balance. Moreover, due to the existence of the balance chain 602, the swing amplitude can be limited, realizing the smooth control of the swinging process of the door body 2. After balance, the upper and lower support rotating shafts and the center of gravity of the door body 2 are on the same straight line, and are separated from the door frame 101 by a distance Δ (Δ is the set eccentric distance, which can be taken as 15 mm 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 the movement. With such a setting, based on the hanging mechanism 6 conditions, a simple center-of-gravity self-balancing separation structure is adopted to realize the separation of the sealing surface before the gate moves horizontally, ensuring that the sealing surface is not scratched during the movement. And, the hanging mechanism 6 adopts a combination of the upper block 6011, the lower block 6015, the position adjustment bolt 6017, the separation distance adjustment bolt 6018, etc. to realize the adjustment of the normal distance of the door body 2, and realizes the adjustment of the height direction of the door body 2 through the height adjustment block 6013 and the height adjustment upper rod and height adjustment lower rod with positive and reverse threads. Combining with the lateral movement ability of the hollow box frame 501, the adjustment ability of the door body 2 in the normal direction, height direction and lateral direction is formed, and the centering effect of the door body 2 and the door frame 101 can be well realized.

[0035] Therefore, compared with the conventional method of using a pre-tension spring to separate the sealing surface of the large door of the vacuum chamber 1, it is difficult to push a large-mass and large-size door in this way, and the sealing performance is likely to be affected. If a normal separation mechanism is used, it will be relatively complex. The large door of the high-fidelity test vacuum chamber 1 for large engines in this application is based on a hanging support method, and a structure that pre-biases the center of gravity of the door in a compressed state and automatically balances the center of gravity after release is adopted to achieve the separation of the sealing surface. The structure is simple and effective, and the sealing effect will not be affected.

[0036] Such as Figure 8 , Figure 9As shown, the large engine high-fidelity test vacuum chamber 1 door further includes a clamping mechanism 9, which is adapted to be disposed on the door frame 101 of the vacuum chamber 1 to apply a force to press the door body 2 against the door frame 101 after the door body 2 is closed. For example, a plurality of clamping mechanisms 9 can be arranged along the entire circumference of the door body 2 to improve the sealing performance between the door frame 101 and the door body 2 when the door body 2 is closed. Among them, the clamping mechanism 9 includes a clamping body frame 901, a first cylinder 902, a slider 903, a claw 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 can be connected to the clamping body frame 901 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 disposed within the clamping body frame 901 and is connected to the piston of the first cylinder 902, and the slider 903 is driven to move when the piston moves. For example, the connecting portion of the claw 904 can be a U-shaped plate structure, and the U-shaped plate structure clamps two parallel sides of the clamping body frame 901. The claw 904 is pivotally disposed at one end of the clamping body frame 901 away from the first cylinder 902. The guide groove 906 is disposed on the side wall of the clamping body frame 901 for installing the claw 904. For example, the guide groove 906 can be disposed on both side walls of the clamping body frame 901 that face each other for installing the claw 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 claw 904. The guide pin 907 passes through the inside and outside of the guide groove 906 and is connected to the 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 the guide groove 906 can be curved and the lower section can be straight. When the piston of the first cylinder 902 is pushed forward, the piston successively drives the slider 903, the power pin shaft 905, the claw 904, and the guide pin 907 to move forward. When the guide pin 907 enters the upper section of the guide groove 906, the guide pin 907 generates an upward turning moment on the claw 904. As the piston moves forward, the upward turning moment gradually increases, overcoming the gravity moment to achieve upward turning. On the contrary, when the piston retreats, the claw 904 turns downward and tightens.

[0037] As Figure 13As shown, the door of the large engine high-model test vacuum chamber 1 also includes a wire suspension mechanism 10, which includes a support plate 1001, a guide angle steel 1002 and a wire suspension pulley 1003; one end of the support plate 1001 is connected to the cross beam 302, and the other end extends in a direction away from the cross beam 302; the guide angle steel 1002 is arranged on the support plate 1001, and the guide angle steel 1002 and the cross beam 302 are arranged parallel to each other; along the length direction of the guide angle steel 1002, a plurality of wire suspension pulleys 1003 are arranged on the guide angle steel 1002 at intervals. When in use, one end of the suspension wire can be fixed to the guide angle steel 1002, and the other end passes through the wire clips of each wire suspension pulley 1003 in turn and is connected 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 the movement.

[0038] 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 arranged 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 arranged on the slot filling frame 801; the door slot cover plate 803 is flippably arranged on the slot filling 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 flip up to leak the door slot 7. For example, a set of slot filling mechanisms 8 can be installed on both sides of the door body 2 to jointly drive the door slot cover plate 803 to operate. When the second cylinder 802 is extended, the door slot cover plate 803 is laid flat on the door slot 7. When the second cylinder 802 is controlled to be retracted, the door slot cover plate 803 is driven to rotate around its rotation axis, and the door slot cover plate 803 stands up. Since the sealing flange of the vacuum cabin 1 door adopts a rectangular flange structure, the flange part of the door body 2 needs to be embedded below the ground when the cabin is closed and sealed (300-400mm in this case), so there is a door slot 7 slightly wider than the door below the door body 2. In order to facilitate the entry and exit of the engine tooling vehicle, a flap-type door slot cover plate 803 is used, which can realize the opening or paving action of the door slot 7 when the vacuum door is opened and closed.

[0039] 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 surfaces of the door body 2 and the door frame 101 are completely separated (15 mm 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.

[0040] The process of closing the door body 2 is as follows: the door slot cover plate 803 rises. After the door slot cover plate 803 rises to the in-place position, the door body 2 automatically moves for closing. After the door body 2 closes to the in-place position, the door body 2 performs a descending action. After the door body 2 descends to the in-place position, the clamping mechanism 9 executes the clamping action. After all the clamping mechanisms 9 are clamped in place, the entire closing operation is completed.

[0041] Among them, corresponding position sensors can be set for the large engine high-fidelity test vacuum chamber 1's door lifting mechanism 4, moving mechanism 5, slot filling mechanism 8, and clamping mechanism 9. The control system with a programmable logic controller PLC as the core control element can be remotely controlled through a human-machine interface and an Ethernet interface. "One-key door opening" operation and "one-key door closing" operation are set in the program, making the complex door actions simple and safe.

[0042] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A large engine high-fidelity test vacuum chamber door, characterized in that, At least including: Door body (2); Hanging foundation (3), the hanging foundation (3) includes columns (301) respectively arranged on both sides of the door body (2), and a cross beam (302) arranged on the tops of the two columns (301); Lifting mechanism (4), the lifting mechanism (4) is arranged on the top of each column (301), the connecting part of the lifting mechanism (4) is connected with the column (301), and the execution part of the lifting mechanism (4) is connected with the cross beam (302); Moving mechanism (5), arranged on the cross beam (302); Hanging mechanism (6), one end is connected with the moving mechanism (5), and the other end is connected with the door body (2), and the door body (2) can move along the axial direction of the cross beam (302) under the drive of the moving mechanism (5); Door slot (7), arranged under 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), and when the door body (2) is opened, the door body (2) is pulled out from the door slot (7); Slot filling mechanism (8), arranged on the side of the door slot (7) away from the vacuum chamber (1), and the slot filling mechanism (8) is adapted to level the door slot (7) after the door body (2) is pulled out from the door slot (7).

2. The large engine high-fidelity test vacuum chamber door according to claim 1, characterized in that The lifting mechanism (4) includes a base (401), a first driving motor (402), a lead screw (403), a worm and worm gear pair (404) and a cross 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 along a direction parallel to the column (301), and the lead screw (403) is connected with the output shaft of the first driving motor (402) through the worm and worm gear pair (404); The cross beam seat (405) is arranged on the cross beam (302) and is connected with the lead screw (403). The first driving motor (402) drives the lead screw (403) to rotate through the worm and worm gear pair (404), and the lead screw (403) drives the cross beam seat (405) to lift so that the cross beam (302) moves up and down synchronously.

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

4. The large engine high-fidelity test vacuum chamber door according to claim 1, characterized in that The moving mechanism (5) includes 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 at intervals along the length direction of the hollow box frame (501) inside the hollow box frame (501), and the hollow box frame (501) is slidably arranged on the cross beam (302) along the length direction of the cross beam (302) through the first pulley (502) and the second pulley (503); Mounting seats (504) are arranged at positions on the top of the hollow box frame (501) that are adapted to the positions of the first pulley (502) and the second pulley (503); The second driving motor (505) is arranged on the cross beam (302), and the output shaft of the second driving motor (505) is connected to each mounting seat (504) through the gear-rack pair (506); When the second driving motor (505) rotates forward, the mounting seat (504) above the first pulley (502) is tightened, and the hollow box frame (501) moves in the door-opening direction; when the second driving motor (505) rotates reversely, the mounting seat (504) above the second pulley (503) is tightened, and the hollow box frame (501) moves in the door-closing direction.

5. The large engine high-fidelity test vacuum chamber door according to claim 4, characterized in that The moving mechanism (5) further includes a guide wheel assembly (507), which is arranged between the outer side wall of the cross beam (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), the guide wheel (5071) is arranged on the side of the support seat (5072) facing the cross beam (302), and the wheel surface of the guide wheel (5071) is in contact with the outer side wall of the cross beam (302).

6. The large engine high-fidelity test vacuum chamber door according to claim 4, characterized in that The hanging mechanism (6) includes a hanging arm (601) and a balance chain (602); There are two hanging arms (601), the two hanging arms (601) are arranged parallel to each other at intervals, 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 balance chain (602) is arranged parallel to the hanging arm (601) and is located between the two hanging arms (601), one end of the balance chain (602) is connected to the door body (2), and the other end is connected to the hollow box frame (501).

7. The large engine high-fidelity test vacuum chamber door according to claim 6, characterized in that 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); The top of the upper block (6011) is connected to the hollow box frame (501) through the first hanging pin (6010); The top end of the height adjustment upper rod (6012) is hinged to the bottom 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 hinged to the top of the lower block (6015); The bottom of the lower block (6015) is connected to the door body (2) through the second hanging pin (6016).

8. The large engine high-fidelity test vacuum chamber door according to claim 7, wherein 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 part of it extends into the hollow box frame (501) and abuts against the side wall of the upper block (6011); A hollow connecting seat (603) is arranged on the top of the door body (2), at least part of the lower block (6015) extends into the hollow connecting seat (603), and the lower block (6015) is connected to the hollow connecting seat (603) through the second hanging pin (6016); The separation distance adjustment bolt (6018) is arranged on the hollow connecting seat (603), and at least part of it extends into the hollow connecting seat (603) and abuts against the side wall of the lower block (6015).

9. The large engine high-fidelity test vacuum chamber door according to claim 1, wherein It further includes a clamping mechanism (9), which is adapted to be arranged on the door frame (101) of the vacuum chamber (1) to apply a force to press the door frame (101) after the door body (2) is closed; The clamping mechanism (9) includes a clamping body frame (901), a first cylinder (902), a slider (903), a hook claw (904), a power pin shaft (905), a guide groove (906), and a guide pin (907); The clamping body frame (901) is adapted to be 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 arranged in the clamping body frame (901) and is connected to the piston of the first cylinder (902); The hook claw (904) is rotatably arranged at one end of the clamping body frame (901) away from the first cylinder (902); The guiding groove (906) is arranged on the side wall of the clamping body frame (901); The power pin shaft (905) passes through the inside and outside of the guiding groove (906) and is respectively connected to the slider (903) and the hook claw (904); The guiding pin (907) passes through the inside and outside of the guiding groove (906) and is connected to the hook claw (904), and the guiding pin (907) is located on the side of the power pin shaft (905) away from the cylinder.

10. The large engine high-mode test vacuum chamber door according to claim 1, characterized in that It further includes a wire hanging mechanism (10), and the wire hanging mechanism (10) includes a support plate (1001), a guiding angle steel (1002) and wire hanging pulleys (1003); One end of the support plate (1001) is connected to the cross beam (302), and the other end extends in a direction away from the cross beam (302); The guiding angle steel (1002) is arranged on the support plate (1001), and the guiding angle steel (1002) is arranged parallel to the cross beam (302); A plurality of the wire hanging pulleys (1003) are arranged at intervals on the guiding angle steel (1002) along the length direction of the guiding angle steel (1002).

11. The large engine high-mode test vacuum chamber door according to claim 1, characterized in that The groove filling mechanism (8) includes a groove filling machine frame (801), a second cylinder (802) and a door groove cover plate (803); The groove filling machine frame (801) is arranged on the side of the door groove (7) away from the vacuum chamber (1); The second cylinder (802) is arranged on the groove filling machine frame (801); The door groove cover plate (803) is rotatably arranged on the groove 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 groove cover plate (803) to drop to level the door groove (7); when the piston of the second cylinder (802) retracts, it drives the door groove cover plate (803) to turn up to expose the door groove (7).

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