Auxiliary device for general assembly of rocket hatch cover

Abstract

The utility model provides an auxiliary device for general assembly of a rocket hatch cover, and relates to the field of rocket general assembly, and the auxiliary device comprises a supporting assembly, a lifting assembly and a bearing assembly. The supporting assembly comprises a base and a fixing clamp, a guide groove is formed in the base, the fixing clamp is slidably connected to the guide groove, and the fixing clamp is matched with a structural part of a parked vehicle; the lifting assembly comprises a lead screw, a hand wheel and a guide column. A self-locking thread is arranged on the peripheral surface of the lead screw so as to brake at any position, and an internal thread matched and meshed with the self-locking thread is arranged on the hand wheel; the bearing assembly comprises a supporting plate matched with the shape of the rocket hatch cover, and the supporting plate is fixedly connected with the top of the lead screw. The device actively adapts to a parked vehicle and can be connected with the parked vehicle by adjusting the position of the fixing clamp in different scenes; the rocket hatch cover can be braked at any height and stably lifted, it is guaranteed that operators can smoothly connect hatch cover cables and install fastening screws, the final assembly quality of a rocket is improved, and the safety risk of final assembly of the rocket is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rocket assembly, in particular to an auxiliary device for rocket hatch cover assembly. BACKGROUND

[0002] At present, the sizes and masses of the hatch covers of various sections of the rocket are different; in the assembly operation, two operators are needed to install the hatch cover of the quadrant IV section, one of the operators lies on the parked rolling frame vehicle and looks up at the rocket, or stands beside the parked rocket vehicle and holds up the hatch cover. The operator holding up the hatch cover is not in the state of stretching both arms or completely bending, the operation height is not comfortable, the holding up can be maintained for a short time, and cannot be maintained for a long time. The other operator is responsible for installing the fastening screw in the state of blind operation.

[0003] In the related art, when the rocket participates in the test, the hatch cover is usually equipped with telemetry equipment, and the related cable is connected, and the holding up time is lengthened. In the holding up state, two operators cooperate to quickly complete the hatch cover operation. In the operation of the hatch cover of each section of the rocket, the difficulty and safety risk of the hatch cover of the quadrant IV section are high. The difficulty and safety risk are mainly reflected in the following three points. First, the shape and mass of the hatch cover are large. Second, the operator installing the hatch cover of the quadrant IV section is prone to fatigue, and cannot guarantee stable holding up. Third, the operator installs the hatch cover in the state of holding up, and there is a great safety risk. In the case of fatigue of the holding up operator, the two operators may miss, which may cause the hatch cover to drop, may pull the cable of the telemetry antenna, may damage the fastening screw or the steel wire sleeve, may fall and knock the hatch cover, and there is a quality and safety risk of the rocket hatch cover.

[0004] In summary, in the horizontal parking state of various types of rockets, the operator completes the operation in the form of holding up from the upward looking position, in the holding up process, the operator is prone to fatigue, the held up hatch cover shakes, the hatch cover falls and is damaged, the cable or electrical plug is pulled and damaged, the quality of the rocket assembly is reduced, the safety risk of the rocket assembly is increased, and the use plan of the rocket is affected. Therefore, it is urgent to propose an auxiliary device for rocket hatch cover assembly to solve the problems in the related art. CONTENT OF THE INVENTION

[0005] In view of the deficiencies of the prior art, the present application provides an auxiliary device for rocket hatch cover assembly, which solves the problems of hatch cover shaking, hatch cover falling and being damaged, cable or electrical plug being pulled and damaged, and the like, when the operator installs or disassembles the hatch cover of the quadrant IV section in the horizontal parking state of various types of rockets, and reduces the quality and safety risk of the rocket assembly.

[0006] To achieve the above object, the present application is implemented by the following technical solutions:

[0007] In a first aspect, the embodiments of the present application provide an auxiliary device for rocket hatch cover assembly, which is arranged between a rocket in a parking state and a parking vehicle, and comprises a supporting assembly, a lifting assembly and a supporting assembly. The supporting assembly comprises a base and a fixing clamp, the base is provided with a guide groove, the fixing clamp is slidably connected to the guide groove in a first direction, and the fixing clamp is matched with a structural member of the parking vehicle; the lifting assembly comprises a lead screw, a hand wheel and a guide column; the outer periphery of the lead screw is provided with a self-locking thread for braking at any position, and the hand wheel is provided with an internal thread matched with the self-locking thread; the supporting assembly comprises a supporting plate matched with the outer shape of the rocket hatch cover, and the supporting plate is fixedly connected to the top of the lead screw.

[0008] Specifically, the base comprises a stand and a plurality of horizontal beam members connected to each other, and the plurality of horizontal beam members are arranged in layers in a second direction; the first side of the horizontal beam member at the bottom layer is provided in an open manner, and the second side, the third side and the fourth side correspond to three horizontal beams respectively, and any two adjacent ones of the three horizontal beams are perpendicular to each other and are provided with guide grooves.

[0009] According to the first aspect of the embodiments of the present application, the fixing clamp is in the shape of U and comprises a clamp body and two symmetrical extension branches, and each extension branch is provided with a set of spring pin nuts, springs and spring pins.

[0010] According to the first aspect of the embodiments of the present application, the extension branch is provided with a through hole to accommodate the assembled spring, and the spring pin and the spring pin nut are respectively connected to the two ends of the spring.

[0011] According to the first aspect of the embodiments of the present application, the fixing clamp further comprises a set of guide pins located in the middle part of the clamp body and double nuts, and the guide pins are slidably arranged in the guide grooves; after the fixing clamp is assembled on the base, the double nuts are located on the upper side of the guide grooves.

[0012] According to the first aspect of the embodiments of the present application, the base further comprises a horizontal plate located at the top of the base, and the horizontal plate is connected to the horizontal beam member at the uppermost layer; the guide column is fixed to the top of the horizontal plate, and the lead screw penetrates through the guide column and the horizontal plate and extends to the lower side of the horizontal plate in the second direction.

[0013] According to the first aspect of the embodiments of the present application, the lifting assembly further comprises a hand wheel limiting piece, which is a semi-rotating body, and the hand wheel limiting piece is located at the top of the guide column and on the lower side of the hand wheel; the hand wheel is provided with a guide ring matched with the hand wheel limiting piece.

[0014] According to the first aspect of the embodiments of the present application, the hand wheel can rotate freely around the circumference thereof, the guide column provides a mounting position for the hand wheel and the hand wheel limiting piece and limits the maximum axial displacement of the hand wheel; the lead screw is guided and supported by the guide column during lifting.

[0015] According to a first aspect of the embodiment of the present application, the side surface of the guide column is provided with a limiting pin, and the limiting pin is used to constrain the circumferential freedom of the lead screw during rotation of the hand wheel.

[0016] According to a first aspect of the embodiment of the present application, the outer profile surface of the support plate away from the lead screw is bonded with felt, and the cross beam member is provided with three layers, and in the bottommost cross beam member, two guide grooves are symmetrically arranged along the third direction.

[0017] According to a first aspect of the embodiment of the present application, the support plate and the hand wheel are arranged at a preset distance, the inner side of the base has a containing space, and during the lifting of the lead screw along the second direction, part of the lead screw is contained in the containing space.

[0018] The present application provides a kind of rocket hatch cover assembly with auxiliary device.Compared with prior art, it has the following beneficial effects:

[0019] The fixed clamp of the present application is adapted to the structural member of the corresponding parking car of rocket, since the fixed clamp can slide in the guide groove in the base to adjust the position, the position of the fixed clamp can be adjusted to connect with the parking car in different scenes; by adjusting the lifting of the lead screw, the support plate can be driven to support and lift the rocket hatch cover; at the same time, since the device is fixed on the parking car for use, to ensure the effectiveness and reliability of the base fixation, the device actively adapts to the parking car in the fixation mode, the parking car is a frame structure and has a hollow area and a protrusion on the upper surface, the cross beam member in the base is provided in multiple layers, and the first side of the bottommost cross beam member is provided in an open manner to adapt to the protrusion on the upper surface of the rocket parking car. By providing the support assembly, the lifting assembly and the supporting assembly, the rocket hatch cover can be braked and safely lifted at any height, the operator can smoothly connect the hatch cover cable and install the fastening screw, the assembly quality of the rocket is improved, and the safety risk of the rocket assembly is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any inventive labor.

[0021] Figure 1 is a perspective view of a rocket hatch cover assembly auxiliary device provided by the embodiment of the present application;

[0022] Figure 2 is a side view of a rocket hatch cover assembly auxiliary device provided by the embodiment of the present application;

[0023] Figure 3is a structural schematic diagram of the fixing clamp provided by the embodiment of the present application;

[0024] Figure 4 is a structural schematic diagram of the base and the guide column provided by the embodiment of the present application;

[0025] Figure 5 is an assembly schematic diagram of the fixing clamp and the guide slot provided by the embodiment of the present application.

[0026] The reference signs are as follows: base 1, stand column 11, cross beam 12, cross plate 13, fixing clamp 2, clamp body 21, extension branch 22, spring pin nut 23, spring 24, spring pin 25, guide pin 26, double nut 27, lead screw 3, hand wheel 4, guide column 5, limit pin 51, supporting plate 6, hand wheel limit piece 7, guide slot A, accommodating space B, first direction X1, second direction X2, and third direction X3. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are described clearly and completely. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0028] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms “include”, “contain”, or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article, or device. Without more limitations, the element defined by the statement “including a…” does not exclude the presence of another identical element in the process, method, article, or device including the element.

[0029] The embodiment of the present application provides an auxiliary device for rocket hatch cover assembly, which solves the problems of hatch cover shaking, hatch cover falling damage, cable or electrical plug pulling damage, and the like when an operator installs or disassembles a Ⅳ-quadrant hatch cover in a horizontal parking state of various types of rockets, thereby reducing the quality of rocket assembly and increasing the safety risk of assembly.

[0030] The technical solutions in the embodiments of the present application are as follows to solve the above technical problems:

[0031] At present, the sizes and masses of the hatch covers of the sections of the rocket are different; in the assembly operation, two operators are needed to install the hatch cover of the section in the fourth quadrant, one of the operators lies on the parked rolling frame vehicle, looks up at the rocket, or stands beside the parked rocket vehicle and holds up the hatch cover. The operator holding up the hatch cover is not in the state of stretching both arms or completely bending, the operation height is not comfortable, the holding up can be kept for a short time, and the holding up cannot be kept for a long time. The other operator is responsible for installing the fastening screw in the state of blind operation.

[0032] In the related art, when the rocket participates in the test, the telemetry equipment is usually added on the hatch cover, the related cable is connected, and the holding up time is lengthened. In the holding up state, two operators cooperate to quickly complete the hatch cover operation. In the operation of the hatch covers of the sections of the rocket, the hatch cover of the section in the fourth quadrant is difficult to operate and has high safety risk. The difficulty and high safety risk mainly reflect the following three points. First, the shape and mass of the hatch cover are large. Second, the operator installing the hatch cover of the section in the fourth quadrant is easy to be tired and cannot guarantee stable holding up. Third, the operator installs the hatch cover in the state of holding up, and there is a large safety hidden danger. In the state of the holding up personnel being tired, the two operators cooperate to miss, which may cause the hatch cover to drop, may pull the cable of the telemetry antenna, may damage the fastening screw or the steel wire sleeve, may drop and knock the hatch cover, and there is a quality and safety risk of the rocket hatch cover.

[0033] In summary, in the state of the horizontal parking of the rocket of each type, when the hatch cover is installed or disassembled, the operator completes the operation in the form of holding up upward from the upward looking position. In the holding up process, the personnel are easy to be tired, the held up hatch cover is easy to shake, the hatch cover is easy to drop and damage, the cable or the electrical plug is easy to be pulled and damaged, the quality of the rocket assembly is reduced, the safety risk of the rocket assembly is increased, and the use plan of the rocket is affected. Therefore, it is urgent to propose a rocket hatch cover assembly auxiliary device to solve the problems in the related art.

[0034] In order to better understand the above technical solutions, the above technical solutions will be described in detail in combination with the drawings of the specification and the specific embodiments.

[0035] First, a rocket hatch cover assembly auxiliary device provided by the embodiments of the present application will be introduced.

[0036] A rocket hatch cover assembly auxiliary device provided by the embodiments of the present application, as shown in Figure 1 and Figure 2 , the rocket hatch cover assembly auxiliary device is arranged between the rocket in the parked state and the parking vehicle, and includes a supporting assembly, a lifting assembly and a supporting assembly.

[0037] Specifically, the support assembly comprises a base 1 provided with a guide slot A and a fixing clamp 2 slidably connected to the guide slot A along a first direction X1, the fixing clamp 2 being adapted to the structural member of the parking vehicle; the lifting assembly comprises a lead screw 3, a hand wheel 4 and a guide column 5; the outer periphery of the lead screw 3 is provided with a self-locking thread for braking at any position, and the hand wheel 4 is provided with an internal thread matched with the self-locking thread; the supporting assembly comprises a supporting plate 6 adapted to the shape of the rocket hatch cover, and the supporting plate 6 is fixedly connected to the top of the lead screw 3. It can be understood that the supporting plate 6 is adapted to the shape of the rocket hatch cover, and the supporting plate 6 can be welded and fixed to the lead screw 3 to ensure stable lifting when one operator connects the cable on the rocket and the hatch cover before sealing the cabin, and another operator can not be needed to assist.

[0038] In addition, the base 1 comprises a column 11 and a plurality of layer beams 12 connected to each other, the plurality of layer beams 12 being arranged in layers along a second direction X2; the first side of the layer beam 12 at the bottom layer is open, and the second side, the third side and the fourth side correspond to three beams respectively, and any two adjacent beams of the three beams are perpendicular to each other and are provided with a guide slot A.

[0039] In the embodiment of the present application, it can be understood that the fixing clamp 2 of the present application is adapted to the structural member of the corresponding parking vehicle of the rocket, and since the fixing clamp 2 can slide in the guide slot A in the base 1 to adjust the position, the position of the fixing clamp 2 can be adjusted to connect with the parking vehicle in different scenes; the lifting of the lead screw 3 can drive the supporting plate 6 to support and lift the rocket hatch cover.

[0040] Further, since the device is used by being fixed on the parking vehicle, in order to ensure the effectiveness and reliability of the base 1, the device actively adapts to the parking vehicle in the fixing mode, the parking vehicle is a frame structure and has a hollow area and a protrusion on the upper surface, the layer beams 12 in the base 1 of the present application are arranged in layers, and the first side of the layer beam 12 at the bottom layer is open to adapt to the protrusion on the upper surface of the rocket parking vehicle.

[0041] The height of the device can be placed between the rocket in the parking state and the parking vehicle, and the hatch cover can be lifted to the height required for operation; the width is convenient for two operators to stand on both sides to operate, and is also convenient for storage; the structural design not only meets the bearing requirement, but also overcomes the influence of the protrusion on the parking vehicle.

[0042] In summary, the present application provides a support assembly, a lifting assembly and a supporting assembly, which can brake and safely lift the rocket hatch cover at any height, and ensure that the operator can smoothly connect the cable of the hatch cover and install the fastening screw; thereby reducing the probability of problems such as shaking of the hatch cover, damage of the hatch cover due to falling, damage of the cable or electrical plug due to pulling, improving the assembly quality of the rocket, and reducing the safety risk of the rocket assembly.

[0043] In some embodiments, as shown in Figure 3 and Figure 5 The fixed clamp 2 is U-shaped and includes a clamp body 21 and two symmetrical extension segments 22, each of which is provided with a set of spring pin nuts 23, springs 24 and spring pins 25. The extension segment 22 is provided with a through hole to accommodate the spring 24, and the spring pin 25 and the spring pin nut 23 are connected to the two ends of the spring 24. The fixed clamp 2 further includes a set of guide pins 26 located in the middle of the clamp body 21 and a double nut 27, and the guide pin 26 is slidably arranged in the guide groove A; after the fixed clamp 2 is assembled on the base 1, the double nut 27 is located on the upper side of the guide groove A.

[0044] In the embodiments of the present application, it can be understood that the various structural members of the fixed clamp 2 cooperate to fix the auxiliary device provided by the present application on the rocket parking vehicle below the hatch cover. The spring pin nut 23, the spring 24 and the spring pin 25 facilitate the installation and removal of the fixed clamp 2. By providing the guide pin 26 and the double nut 27, the fixed position and the fixed angle of the fixed clamp 2 can be changed, and the fixed clamp 2 can also be removed to adapt to other flat placement surfaces, which can be used for different section IV quadrant installation positions.

[0045] It should be noted that the spring pin nut 23, the spring 24, the spring pin 25, the guide pin 26 and the double nut 27 are all national standard parts, which facilitates replacement in case of failure. The fixed clamp 2 is simple in design, and no other tools are required during use. The fixed clamp 2 can be fixed by pulling the spring pin 25.

[0046] In some embodiments, as shown in Figure 1 and Figure 2 The lifting assembly further includes a hand wheel limiting piece 7, which is a semi-rotary body. The hand wheel limiting piece 7 is located at the top of the guide column 5 and below the hand wheel 4. The hand wheel 4 is provided with a guide ring adapted to the hand wheel limiting piece 7.

[0047] In the embodiments of the present application, it can be understood that the hand wheel limiting piece 7 is selected to be a semi-rotary body, which can reduce friction and facilitate maintenance. The hand wheel 4 is provided with an internal thread matched with the self-locking thread and a guide ring, which facilitates operation.

[0048] In some embodiments, the hand wheel 4 can rotate freely around its circumference. The guide column 5 provides a mounting position for the hand wheel 4 and the hand wheel limiting piece 7 and limits the maximum axial displacement of the hand wheel 4. The lead screw 3 is guided and supported by the guide column 5 during lifting. The side surface of the guide column 5 is provided with a limiting pin 51 for constraining the circumferential freedom of the lead screw 3 during rotation of the hand wheel 4.

[0049] In the embodiments of the present application, it can be understood that the guide column 5 provides mounting positions for the hand wheel 4 and the hand wheel limiting sheet 7, limits the axial movement of the hand wheel 4, and ensures that the hand wheel 4 can rotate freely; the guide column 5 can also provide guidance and support for the lead screw 3, and by arranging a limiting pin on the side surface of the guide column 5, the up and down movement of the lead screw is allowed, and the circumferential rotation movement of the lead screw is limited.

[0050] In one example, as shown in Figure 4 The base 1 further includes a horizontal plate 13 located at the top of the base 1, and the horizontal plate 13 is connected to the uppermost horizontal beam member 12; the guide column 5 is fixed to the top of the horizontal plate 13, and the lead screw 3 penetrates through the guide column 5 and the horizontal plate 13 along the second direction X2 and extends to the lower side of the horizontal plate 13.

[0051] In some embodiments, the supporting plate 6 is bonded with felt away from the outer contour surface of the lead screw 3, and the horizontal beam member 12 is provided with three layers, and in the bottommost horizontal beam member 12, two guide grooves A are symmetrically arranged along the third direction X3.

[0052] In the embodiments of the present application, it can be understood that by bonding the felt on the supporting plate 6, the device on the rocket hatch cover can be prevented from being bumped. By arranging the base 1, the center of gravity of the auxiliary device is lowered, and the safety is improved.

[0053] In addition, the base 1 is provided with three layers of horizontal beam members 12, and the bottommost horizontal beam member 12 has horizontal beams in three directions, and the horizontal beams are provided with guide grooves A to provide the movable stroke of the fixed clamp 2. In the bottommost horizontal beam member 12, in addition to the two guide grooves A symmetrically arranged along the third direction X3, there is also a guide groove A that is perpendicular to the two symmetric guide grooves A, and the three guide grooves A are located at three different positions, so that the base 1 and the rocket parking vehicle can be stably fixed and the rollover risk is overcome.

[0054] In some embodiments, please refer to Figure 1 and Figure 2 The supporting plate 6 and the hand wheel 4 are arranged at a predetermined distance, and the inner side of the base 1 has a containing space B, and during the lifting process of the lead screw 3 along the second direction X2, part of the lead screw 3 is contained in the containing space B.

[0055] In the embodiments of the present application, it can be understood that a space for two-hand operation is left between the supporting plate 6 and the hand wheel 4 to prevent the hands from being injured, and the lead screw 3 can adopt a large pitch to make the lifting height obvious during the lifting adjustment process; the lead screw 3 can be braked at any height position, and through the cooperation of the supporting plate 6, the rocket hatch cover is stably lifted, which provides convenience for the operator to connect the hatch cover cable, install the fastening screw and other operations.

[0056] In summary, compared with the prior art, the present application has the following beneficial effects:

[0057] 1. The fixing clamp 2 of this application is compatible with the structural components of the parking vehicle corresponding to the rocket. Since the fixing clamp 2 can slide in the guide groove A in the base 1 to adjust its position, it can connect with the parking vehicle by adjusting the position of the fixing clamp 2 in different scenarios. By adjusting the lifting of the lead screw 3, the support plate 6 can be driven to support and lift the rocket hatch cover.

[0058] 2. Since this device is fixed on the parking vehicle, in order to ensure the effectiveness and reliability of the base 1, this device actively adapts to the parking vehicle in terms of fixing method. The parking vehicle has a frame structure and has hollow areas and protrusions on the upper surface. The crossbeam 12 in the base 1 of this application is arranged in multiple layers, and the first side of the bottom crossbeam 12 is open to adapt to the protrusions on the upper surface of the rocket parking vehicle.

[0059] 3. The height of this device is such that it can be placed between the rocket and the parking vehicle when the rocket is parked, and can lift the hatch cover to the height required for operation; the width is convenient for one operator to stand on each side to operate, and it is also convenient for storage; the structural design not only meets the load-bearing requirements, but also overcomes the influence of protrusions on the parking vehicle.

[0060] 4. The support plate 6 in this application is adapted to the shape of the rocket hatch cover. The support plate 6 can be welded and fixed to the screw 3 to ensure stable support when an operator connects the cables inside the rocket and on the hatch cover before sealing the hatch, without the need for another operator to assist.

[0061] 5. This application improves safety by setting the base 1 to lower the center of gravity of the auxiliary device; in the bottom crossbeam 12, in addition to two guide grooves A symmetrically arranged along the third direction X3, there is also a guide groove A that intersects the two symmetrical guide grooves A perpendicularly. The three guide grooves A are located in three different positions, so that the base 1 and the rocket parking vehicle can be stably fixed, overcoming the risk of tipping over.

[0062] 6. This application provides support components, lifting components, and support components, which can brake and securely lift the rocket hatch cover at any height, ensuring that operators can smoothly connect the hatch cover cables and install fastening screws; thereby reducing the probability of hatch cover shaking, hatch cover falling damage, cable or electrical plug pulling damage, etc., improving the overall assembly quality of the rocket, and reducing the safety risks of rocket assembly.

[0063] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An auxiliary device for assembling a hatch cover of a rocket, which is provided between a rocket in a parked state and a parking vehicle, characterized in that, The utility model relates to a rocket hatch cover lifting device, including: Supporting assembly, including base (1) and fixed clamp (2), the base (1) is equipped with guide slot (A), the fixed clamp (2) is slidably connected in first direction in the guide slot (A), the fixed clamp (2) is adapted with the structure spare of parking car, Lifting assembly, including lead screw (3), hand wheel (4) and guide column (5), the outer circumferential surface of lead screw (3) is equipped with self-locking thread to brake in any position, and hand wheel (4) is equipped with internal thread with self-locking thread matching engagement, and Supporting assembly, including with rocket hatch cover appearance adaptation's supporting plate (6), the supporting plate (6) is fixed with the top of lead screw (3) and is connected, Wherein, the base (1) includes stand (11) and multilayer crossbeam spare (12) connected with each other, the multilayer crossbeam spare (12) is stacked along second direction, the first side of the crossbeam spare (12) in the bottom layer is open, and the second side, third side and fourth side correspond three crossbeams respectively, and any two adjacent ones of three crossbeams are perpendicular and are all provided with guide slot (A).

2. The rocket hatch cover assembly aid of claim 1, wherein, The fixed clamp (2) is U-shaped and includes clamp body (21) and two symmetrical extension branch (22), each extension branch (22) is provided with a group of spring pin nut (23), spring (24) and spring pin (25).

3. The rocket hatch cover assembly aid of claim 2, wherein, The extension branch (22) is provided with a through hole to accommodate the spring (24), and the spring pin (25) and the spring pin nut (23) are connected to the two ends of the spring (24) respectively.

4. The rocket hatch cover assembly aid of claim 2, wherein, The fixed clamp (2) further includes a group of guide pins (26) located in the middle of the clamp body (21) and a double nut (27), the guide pins (26) are slidably arranged in the guide slot (A); after the fixed clamp (2) is assembled in the base (1), the double nut (27) is located on the upper side of the guide slot (A).

5. The rocket hatch cover assembly aid of any of claims 1-4, wherein, The base (1) further includes a cross plate (13) located at the top of itself, the cross plate (13) is connected to the crossbeam spare (12) in the uppermost layer; the guide column (5) is fixed to the top of the cross plate (13), and the lead screw (3) penetrates the guide column (5) and the cross plate (13) along the second direction and extends to the lower side of the cross plate (13).

6. The rocket hatch cover assembly aid of claim 1, wherein, The lifting assembly further includes a hand wheel limiting piece (7), which is a semi-rotating body, the hand wheel limiting piece (7) is located at the top of the guide column (5) and on the lower side of the hand wheel (4); the hand wheel (4) is provided with a guide ring matched with the hand wheel limiting piece (7).

7. The rocket hatch cover assembly aid of claim 6, wherein, The hand wheel (4) can rotate freely around its circumference, the guide column (5) provides a mounting position for the hand wheel (4) and the hand wheel limiting piece (7), and limits the maximum axial displacement of the hand wheel (4); the lead screw (3) is guided and supported by the guide column (5) during lifting.

8. The rocket hatch cover assembly aid of claim 6 or 7, wherein, The side surface of the guide column (5) is provided with a limiting pin, which is used to constrain the circumferential freedom of the lead screw (3) during rotation of the hand wheel (4).

9. The rocket hatch cover assembly aid of claim 1, wherein, The supporting plate (6) is bonded with felt away from the outer contour surface of the lead screw (3), the cross beam (12) is provided with three layers, and in the bottom layer of the cross beam (12), two guide grooves (A) are symmetrically arranged along the third direction.

10. The rocket hatch cover assembly aid of claim 9, wherein, The supporting plate (6) and the hand wheel (4) are arranged at a preset distance, the inner side of the base (1) has a containing space (B), and during the lifting of the lead screw (3) along the second direction, part of the lead screw (3) is contained in the containing space (B).

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