A large module transfer device and system

Abstract

The application provides an arm-expanding large module transfer device and system, the device comprises a transfer unit, the transfer unit comprises a moving mechanism, a support platform and a plurality of support arms, the moving mechanism comprises a self-propelled vehicle, the self-propelled vehicle is connected with the support platform and is used for driving the support platform to translate, the support arms are rotationally connected to the edges of the support platform, the plurality of support arms are arranged at intervals along the circumference of the support platform, the plurality of support arms can rotate around respective hinge points to an expanded state, so that the plurality of support arms and the support platform form a support structure for supporting a large module; the plurality of support arms can also rotate around respective hinge points to a recovery state after the large module is lifted by a lifting mechanism arranged at the bottom edge of the large module to be separated from the support platform, so that the transfer device can be withdrawn from between a destination and the large module. The application can realize the dual purposes of stable transportation of the large module and providing conditions for withdrawal of the transfer device.

Description

TECHNICAL FIELD

[0001] The present application relates to a large module transfer device and system. BACKGROUND

[0002] Modular technology is an advanced design and construction technology, which can significantly reduce the amount of site construction, reduce safety hazards, shorten the construction period and reduce the project cost when applied to the design and construction process of nuclear power plants, and is an effective means to improve the design and construction technology of nuclear power plants. The current modular design and construction technology of nuclear power plants still has the problems of small single module size and low integration, and the main constraint factor for the "large and complete" nuclear module is the hoisting and positioning of large modules. The hoisting and positioning method of the crane used in the modular construction of nuclear power plants is affected by the hoisting capacity of large crawler cranes, crane stationing and clearance height, and the preparation quality of large modules of nuclear power plants has reached the limit of the hoisting capacity of heavy cranes.

[0003] The super modular design and construction method changes the traditional crane hoisting construction method to the jacking and translation construction method, which breaks through the limitation of crane hoisting capacity on the size and weight of modules. Among them, the "jacking-translation" technology is the key to the success of the super modular design and construction method of nuclear power plants. The diameter of the segmented module of the reactor building is more than 40 meters, the height is more than 20 meters, and the weight is more than 3000 tons. How to transport such a large module to the installation position is the first problem to be solved by the super modular method. SUMMARY

[0004] The technical problem to be solved by the present application is to provide an arm-expanding large module transfer device which can realize the stable transportation of large modules and provide conditions for the withdrawal of the transfer device, and a system comprising the device.

[0005] The technical solution adopted to solve the technical problem of the present application is:

[0006] The present application provides an arm-expanding large module transfer device, comprising a transfer unit, the transfer unit comprising a moving mechanism, a support platform and a plurality of support arms,

[0007] The moving mechanism comprises a self-propelled vehicle, the self-propelled vehicle being connected with the support platform and used to drive the support platform to translate,

[0008] The support arms are rotationally connected to the edges of the support platform, and the plurality of support arms are arranged at intervals along the circumference of the support platform,

[0009] The plurality of support arms can rotate around the respective hinge points to the unfolded state, so that the plurality of support arms and the support platform form a support structure for supporting the large module;

[0010] The plurality of support arms are also capable of rotating around the respective hinge points to a retracted state after the large module is lifted by the jacking mechanism arranged at the bottom edge of the large module to be separated from the support platform, so that the transfer device can be withdrawn from between the destination and the large module.

[0011] Optionally, the support arms are in the retracted state, and the orthographic projection of the support arms on the plane passing through the upper surface of the support platform is on the upper surface of the support platform.

[0012] Optionally, the transfer unit is provided with two, and the two transfer units are arranged in parallel along the translation direction of the support platform and are symmetrically arranged about the longitudinal center plane of the large module.

[0013] Optionally, the moving mechanism of the transfer unit is provided with a plurality of moving mechanisms, and the plurality of moving mechanisms are arranged at intervals along the translation direction of the corresponding support platform.

[0014] Optionally, the moving mechanism further comprises a climbing mechanism, and the self-propelled vehicle is connected to the support platform through the climbing mechanism.

[0015] The climbing mechanism comprises a climbing rod and a climbing driving part.

[0016] The climbing rod penetrates the support platform, the lower end of the climbing rod is connected to the self-propelled vehicle, and the upper end of the climbing rod penetrates out of the large module, the climbing driving part is connected to the support platform, and is used to drive the support platform to ascend or descend relative to the climbing rod, or drive the climbing rod to ascend or descend relative to the support platform.

[0017] Optionally, the climbing driving part comprises a plurality of telescopic cylinders, and the plurality of telescopic cylinders are arranged at intervals around the climbing rod, the telescopic cylinders are fixedly connected to the support platform, and the telescopic cylinders provide support power for the support platform.

[0018] Optionally, the telescopic cylinder repeats the action sequence that one of the fixed part and the telescopic part of the telescopic cylinder is connected to the climbing rod, the other is disconnected from the climbing rod, the telescopic cylinder is telescoped, one of the fixed part and the telescopic part of the telescopic cylinder is disconnected from the climbing rod, the other is connected to the climbing rod, and the telescopic cylinder is reset, so that the support platform ascends or descends relative to the climbing rod, or the climbing rod ascends or descends relative to the support platform.

[0019] Optionally, the fixed part and the telescopic part of the telescopic cylinder are connected to the climbing rod through the toothed gears.

[0020] Optionally, the support platform is provided with a mounting hole, the climbing rod penetrates the support platform through the mounting hole, and the climbing driving part is located in the mounting hole.

[0021] The present application also provides an arm-expanding large module transfer system, which comprises the arm-expanding large module transfer device and a jacking mechanism.

[0022] The first jacking mechanism is arranged between one end of the bottom surface of the large module perpendicular to the translation direction of the support platform and the destination, and the second jacking mechanism is arranged between the other end of the bottom surface of the large module perpendicular to the translation direction of the support platform and the destination.

[0023] Optionally, the transfer unit is provided with two, and the two transfer units are symmetrically arranged on both sides of the longitudinal center surface of the large module parallel to the translation direction of the support platform.

[0024] The jacking mechanism further comprises a third jacking mechanism and a fourth jacking mechanism,

[0025] The third jacking mechanism is arranged between one end of the bottom surface of the large module along the translation direction of the support platform and the destination, and the fourth jacking mechanism is arranged between the other end of the bottom surface of the large module along the translation direction of the support platform and the destination.

[0026] Optionally, a track is further included, the track corresponds to the transfer unit, and the self-propelled vehicle of the transfer unit is slidably arranged on the corresponding track.

[0027] In the present application, by arranging the support arms that can be expanded and recovered around the support platform, the support arms can hold the large module together with the support platform when expanded, so as to prevent the large module from shaking and falling off the support platform during transportation. After the large module is transported to the destination, since there is space between the adjacent support arms, the jacking mechanisms can be symmetrically arranged between the two ends of the bottom surface of the large module perpendicular to the withdrawal direction of the support platform and the destination, so as to jack up the large module to be separated from the support platform. After the support arms are recovered, the symmetrically arranged jacking mechanisms will not interfere with the withdrawal of the transfer device, so that the present application can realize the dual purposes of stable transportation of the large module and providing conditions for the withdrawal of the transfer device. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The top view structural schematic diagram of the arm expansion type large module transfer device provided for embodiment 1 of the present application is shown in the figure.

[0029] Figure 2 The longitudinal section schematic diagram of the transfer unit is shown in the figure.

[0030] Figure 3 The schematic diagram of the large module being jacked up by the transfer device is shown in the figure.

[0031] Figure 4 The schematic diagram of the front row of climbing poles and the self-propelled vehicle being lifted is shown in the figure.

[0032] Figure 5 The schematic diagram of the large module in place is shown in the figure.

[0033] Figure 6 The schematic diagram of the large module being jacked up to be separated from the support platform by the jacking mechanism is shown in the figure.

[0034] Figure 7 Figure 7 is a schematic view of the installation of the rear climbing pole for the rear row;

[0035] Figure 8 Figure 8 is a schematic view of the retreat of the transfer device to the ground;

[0036] Figure 9 Figure 9 is a schematic view of the lowering of the upper large module to the lower large module by the jacking mechanism;

[0037] Figure 10 Figure 10 is a top view of the large module transfer system provided by the embodiment 2 of the present application.

[0038] In the figure: 1, support platform; 2, through hole; 3, installation hole; 4, hinge; 5, support arm; 6, track; 7, large module; 71, upper large module; 72, lower large module; 8, telescopic cylinder; 9, climbing pole; 10, self-propelled vehicle; 11, lapping seat; 12, third jacking mechanism; 13, fourth jacking mechanism; 14, first jacking mechanism; 15, second jacking mechanism; 16, lapping vehicle. DETAILED DESCRIPTION

[0039] The technical solutions in the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. 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 the present application.

[0040] In the description of the present application, it should be noted that the indication of the position or location relationship such as "upper" is based on the position or location relationship shown in the drawings, and is only for the convenience and simplification of the description, and does not indicate or imply that the indicated device or element must be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0041] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection", "setting", "installation", "fixing" and the like should be understood broadly, for example, it can be fixedly connected or detachably connected, or integrally connected; it can be directly connected or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] The present application provides an arm-expanding large module transfer device, comprising a transfer unit, the transfer unit comprising a moving mechanism, a support platform and a plurality of support arms,

[0044] The moving mechanism comprises a self-propelled vehicle connected with the support platform, for driving the support platform to translate,

[0045] The support arms are rotationally connected to the edge of the support platform, and the plurality of support arms are arranged along the circumference of the support platform,

[0046] The plurality of support arms can rotate around the respective hinge points to an expanded state, so that the plurality of support arms and the support platform form a support structure supporting the large module;

[0047] The plurality of support arms can also rotate around the respective hinge points to a retracted state after the large module is lifted by the lifting mechanism arranged at the edge of the bottom surface of the large module to be separated from the support platform, so that the transfer device can be withdrawn from between the destination and the large module.

[0048] The present application also provides an arm-expanding large module transfer system, comprising the above-mentioned arm-expanding large module transfer device, and a lifting mechanism,

[0049] The first lifting mechanism is used to support between one end of the bottom surface of the large module perpendicular to the translation direction of the support platform and the destination, and the second lifting mechanism is used to support between the other end of the bottom surface of the large module perpendicular to the translation direction of the support platform and the destination.

[0050] Embodiment 1:

[0051] As shown in Figure 1 The present embodiment provides an arm-expanding large module transfer device, comprising a transfer unit, the transfer unit comprising a moving mechanism, a support platform 1 and a plurality of support arms 5,

[0052] The moving mechanism comprises a self-propelled vehicle 10 connected with the support platform 1, for driving the support platform 1 to translate,

[0053] The support arms 5 are rotationally connected to the edge of the support platform 1, and the plurality of support arms 5 are arranged along the circumference of the support platform 1,

[0054] The plurality of support arms 5 can rotate around the respective hinge points to an expanded state, so that the plurality of support arms 5 and the support platform 1 form a support structure supporting the large module 7;

[0055] The plurality of support arms 5 can also rotate around the respective hinge points to a retracted state after the large module 7 is lifted by the lifting mechanism arranged at the edge of the bottom surface of the large module 7 to be separated from the support platform 1, so that the transfer device can be withdrawn from between the destination and the large module 7.

[0056] Thus, by arranging the deployable and retractable support arms 5 around the support platform 1, the support arms 5 can hold the large module 7 together with the support platform 1 when deployed to prevent the large module 7 from shaking and falling off the support platform 1 during transportation. After the large module 7 is transported to the destination, the space between the adjacent support arms 5 allows the jacking mechanism to be symmetrically arranged between the two ends of the large module 7 bottom surface perpendicular to the withdrawal direction of the support platform 1 and the destination, so as to jack the large module 7 to be separated from the support platform. After the support arms 5 are retracted, the symmetrically arranged jacking mechanism does not interfere with the withdrawal of the transfer device, thereby achieving the dual purposes of stable transportation of the large module 7 and providing conditions for the withdrawal of the transfer device.

[0057] Specifically, the self-walking vehicle 10 is a self-walking trolley, so that the transfer device has the self-walking translation ability. The support platform 1 is a box girder type steel structure platform. The length and hinge position of the support arm 5 are flexibly set according to the on-site arrangement of the jacking mechanism, so as to ensure that the jacking mechanism does not interfere with the retraction of the support arm 5 after jacking the large module to be separated from the support platform, and does not interfere with the withdrawal of the transfer device.

[0058] In the embodiment, as shown in Figure 3 After the support arm 5 is retracted, its orthographic projection on the plane passing through the upper surface of the support platform 1 is located on the upper surface of the support platform 1.

[0059] In the embodiment, two transfer units are arranged, and the two transfer units are arranged in parallel along the translation direction of the support platform 1 and symmetrically about the longitudinal center plane of the large module 7.

[0060] Thus, the two ends of the large module 7 bottom surface along the withdrawal direction of the support platform, and the two ends perpendicular to the withdrawal direction of the support platform can be arranged with the jacking mechanism and do not interfere with the withdrawal of the two transfer units, thereby achieving the stable transportation and jacking of the large module with large volume and weight.

[0061] In the embodiment, to further achieve the stable transportation of the large module by the device, the moving mechanism of the transfer unit is provided with a plurality of moving mechanisms, and the plurality of moving mechanisms are arranged in parallel along the translation direction of the corresponding support platform 1.

[0062] To realize the vertical construction of the nuclear power plant, the large module needs to be transported to the formed module which has been poured. In the embodiment, as shown in Figure 2 The moving mechanism further includes a climbing mechanism, and the self-walking vehicle 10 is connected with the support platform 1 through the climbing mechanism,

[0063] The climbing mechanism includes a climbing rod 9 and a climbing driving part,

[0064] The climbing pole 9 passes through the support platform 1, its lower end is connected to the self-propelled vehicle 10, and its upper end protrudes from the large module 7. The climbing drive unit is connected to the support platform 1 and is used to drive the support platform 1 to rise and fall relative to the climbing pole 9, or to drive the climbing pole 9 to rise and fall relative to the support platform 1.

[0065] The process of transferring the large module to the already cast molded module in this embodiment is as follows:

[0066] S1: The transfer device transports the upper-level large module 71 to the side of the lower-level large module 72, which has been completed and poured.

[0067] S2: As Figure 3 As shown, the climbing drive unit propels the support platform 1 upwards on the climbing pole 9 until the distance between the bottom surface of the support platform 1 and the next-level large module 72 is greater than or equal to the height of one self-propelled vehicle 10.

[0068] S3: As Figure 4 As shown, the first row of unraised climbing poles 9 in the forward direction of the lifting and transfer device is raised until the bottom surface of the self-propelled vehicle 10 connected to the row of climbing poles 9 is flush with the top surface of the next-level large module 72. The transfer device then moves forward until the self-propelled vehicle 10 connected to the row of climbing poles 9 is supported on the top surface of the next-level large module 72.

[0069] S4: As Figure 5 As shown, repeat step S3 until all the self-propelled vehicles 10 are supported on the top surface of the next level large module 72.

[0070] S5: As Figure 6 and Figure 10 As shown, a lifting mechanism is provided between the next-level large module 72 and the previous-level large module 71. Specifically, a first lifting mechanism 14 is provided between the end of the bottom surface of the previous-level large module 71 perpendicular to the translation direction of the support platform 1 and the next-level large module 72; a second lifting mechanism 15 is provided between the other end of the bottom surface of the previous-level large module 71 perpendicular to the translation direction of the support platform 1 and the next-level large module 72; a third lifting mechanism 12 is provided between the end of the bottom surface of the previous-level large module 71 along the translation direction of the support platform 1 and the next-level large module 72; and a fourth lifting mechanism 13 is provided between the other end of the bottom surface of the previous-level large module 71 along the translation direction of the support platform 1 and the next-level large module 72. This allows the previous-level large module 71 to be smoothly lifted and detached from the support platform. Then, the multiple support arms 5 are rotated around their respective hinge points to a retracted state, the climbing poles are removed, and the self-propelled vehicle 10 is connected to the support platform.

[0071] S6: As Figure 7As shown, the transfer device moves backward, and the first row of self-walking vehicles 10 suspended in the backward direction of the transfer device, the climbing rod 9 is connected to the suspended self-walking vehicle 10 after passing through the support platform 1, and the connection between the suspended self-walking vehicle 10 and the support platform 1 is released, the climbing rod 9 is lowered until the self-walking vehicle 10 connected thereto lands,

[0072] S7: Repeat step S6 until all self-walking vehicles 10 land, and the transfer device continues to move backward to remove the support platform 1 from the upper and lower large modules, as shown in Figure 8

[0073] S8: As shown, each jacking mechanism is retracted into the lower large module 72 and / or the upper large module 71, so that the upper large module 71 is supported on the lower large module 72. Figure 9

[0074] Specifically, since the upper large module 71 is a frame structure before pouring, it can be designed to accommodate the retracted jacking mechanism by designing an accommodation groove on its bottom surface, and a recycling channel communicating with the above-mentioned accommodation groove on its top surface, so that the jacking mechanism can be sent into the accommodation groove through the recycling channel, or removed from the accommodation groove through the recycling channel.

[0075] In this embodiment, the front edge of the support platform bottom surface is provided with a lap joint seat 11, and before step S3, the transfer device moves forward until the lap joint seat 11 extends into the upper space of the lower large module 72, and the lap joint vehicle 16 supported on the lower large module 72 and located below the lap joint seat 11 is detachably connected to the lap joint seat 11.

[0076] By supporting the front end of the transfer device on the lower large module 72 through the lap joint vehicle 16, it can prevent the transfer device from falling after the first row of moving mechanisms are lifted, and after the first row of moving mechanisms are lifted, the lap joint vehicle is also used to drive the transfer device to move forward on the lower large module 72.

[0077] In this embodiment,

[0078] The climbing driving part includes a plurality of telescopic cylinders 8, which are distributed around the climbing rod 9 in a ring shape, the telescopic cylinders 8 are fixedly connected to the support platform 1, and provide support power for the support platform 1,

[0079] The telescopic cylinder 8 repeats the action sequence of connecting one of its fixed part and telescopic part to the climbing rod 9, and the other to the climbing rod 9, telescoping the telescopic cylinder 8, connecting one of its fixed part and telescopic part to the climbing rod 9, and the other to the climbing rod 9, and resetting the telescopic cylinder 8, so that the support platform 1 is lifted or lowered relative to the climbing rod 9, or the climbing rod 9 is lifted or lowered relative to the support platform 1.

[0080] ​​In this embodiment, the telescopic part of the telescopic cylinder 8 is below the fixed part, and the process of the climbing mechanism to realize the upward movement of the support platform 1 relative to the climbing pole 9 is as follows: the fixed part is connected with the climbing pole 9, the telescopic part is disconnected with the climbing pole 9, the telescopic cylinder 8 is retracted, the fixed part is disconnected with the climbing pole 9, the telescopic part is connected with the climbing pole 9, the telescopic cylinder 8 is extended, and so on, so as to realize the upward movement of the support platform 1 relative to the climbing pole 9.

[0081] The process of the climbing mechanism to realize the downward movement of the support platform 1 relative to the climbing pole 9 is opposite to the above-mentioned upward movement process, and will not be described here.

[0082] The process of the above-mentioned climbing mechanism to realize the upward or downward movement of a row of climbing poles 9 relative to the support platform 1 is the same as the process of the climbing mechanism to realize the upward or downward movement of the support platform 1 relative to the climbing pole 9, and will not be described here.

[0083] In this embodiment, the fixed part and the telescopic part of the telescopic cylinder 8 are connected with the climbing pole 9 through the toothed gears.

[0084] In this embodiment,

[0085] The support platform 1 is provided with a mounting hole 3 and a through hole 2, the through hole 2 is coaxially arranged with the mounting hole 3 and penetrates the upper and lower surfaces of the support platform 1, the through hole 2 is matched with the climbing pole 9, the climbing pole 9 penetrates the support platform 1 through the through hole 2, and the climbing driving part is located in the mounting hole 3.

[0086] The first problem to be solved by the "jacking-translation" system applied to the super modular method is the design of the "jacking-translation" platform. The design of the "jacking-translation" platform needs to solve the following three problems: 1) high bearing capacity requirement: for example, the reactor building segmented module is more than 40 meters in diameter, more than 20 meters in height, and more than 3000 tons in weight; 2) uneven load distribution: for example, the steel containment and the shielding building are circular and not connected with each other, and the load distribution is uneven; 3) complex "entering-withdrawing" process: after the single super module segment is built in the module factory, the "jacking-translation" platform needs to be moved to the lower part of the module and support the weight of the module by itself, and after the platform lifts the module to the predetermined position, the platform also needs to be withdrawn, that is, the platform needs to be able to realize longitudinal and transverse translation under the condition of bearing the weight of the module.

[0087] When performing the jacking-translation operation of the large segmented module of the nuclear power plant, multiple support platforms 1 transport the large module 7 of the nuclear power plant to the predetermined position under the synchronous lifting of the climbing mechanism, multiple jacks are installed at the support points of the large module and support the weight of the entire module 7, so as to provide conditions for the withdrawal of the support platform 1. At this time, since the large module is supported by the jacks, the support arms 5 on the support platform 1 can be folded back through the hinges 4, and after all the support arms 5 are folded back, the box girder type platform is withdrawn along the track 6 under the bearing of the self-propelled vehicle 10.

[0088] The application provides the above-mentioned transfer device, which can change the hoisting and positioning mode of a large module of a nuclear power plant into a jacking and translation positioning mode, so that the limitation of the lifting capacity of a crane on the size and weight of the module is broken, the size and completion of a single module of the nuclear power plant are significantly improved, and the modular design and construction level of the nuclear power plant is improved, the construction period of the nuclear power plant is significantly shortened, and the economy is improved.

[0089] Embodiment 2

[0090] As shown in Figure 3 the embodiment provides an arm unfolding type large module transfer system, which comprises the arm unfolding type large module transfer device in embodiment 1 and a jacking mechanism.

[0091] The jacking mechanism comprises a first jacking mechanism 14, a second jacking mechanism 15, a third jacking mechanism 12 and a fourth jacking mechanism 13,

[0092] The first jacking mechanism 14 is used for supporting between one end of the bottom surface of the large module 7 perpendicular to the translation direction of the support platform 1 and the destination, and the second jacking mechanism 15 is used for supporting between the other end of the bottom surface of the large module 7 perpendicular to the translation direction of the support platform 1 and the destination.

[0093] The third jacking mechanism 12 is used for supporting between one end of the bottom surface of the large module 7 along the translation direction of the support platform 1 and the destination, and the fourth jacking mechanism 13 is used for supporting between the other end of the bottom surface of the large module 7 along the translation direction of the support platform 1 and the destination.

[0094] When each jacking mechanism works at the same time, the previous large module is smoothly jacked to be separated from the support platform, so that after all the support arms 5 are folded and withdrawn, the transfer device can be withdrawn from between the destination and the large module.

[0095] In the embodiment, a track 6 is further included, the track 6 corresponds to the transfer unit, and the self-propelled vehicle 10 of the transfer unit is slidably arranged on the corresponding track 6.

[0096] It can be understood that the above-mentioned embodiments are only exemplary embodiments for illustrating the principles of the application, and the application is not limited thereto. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and essence of the application, and these modifications and improvements are also regarded as the protection scope of the application.

Claims

1. A cantilever-type large modular transfer system, characterized in that, This includes a boom-type large modular transfer device and a lifting mechanism. The articulated large modular transfer device includes a transfer unit, which comprises a moving mechanism, a support platform (1), and multiple support arms (5). The moving mechanism includes a self-propelled vehicle (10), which is connected to the support platform (1) and is used to drive the support platform (1) to translate. The support arm (5) is rotatably connected to the edge of the support platform (1), and multiple support arms (5) are arranged at circumferential intervals along the support platform (1). Multiple support arms (5) can rotate around their respective hinge points to the unfolded state, so that the multiple support arms (5) and the support platform (1) constitute a support structure for supporting the large module (7); Multiple support arms (5) can also be lifted by the lifting mechanism arranged on the bottom edge of the large module (7) to detach from the support platform (1), and rotate around their respective hinge points to the retracted state. When multiple support arms (5) are in the retracted state, the transfer device can be withdrawn from the destination and the large module (7). The lifting mechanism includes a first lifting mechanism (14) and a second lifting mechanism (15). The first lifting mechanism (14) is used to support the bottom surface of the large module (7) between one end perpendicular to the direction of translation of the support platform (1) and the destination, and the second lifting mechanism (15) is used to support the bottom surface of the large module (7) between the other end perpendicular to the direction of translation of the support platform (1) and the destination.

2. The cantilever-type large module transfer system according to claim 1, characterized in that, When the support arm (5) is in the retracted state, its orthographic projection on the plane passing over the upper surface of the support platform (1) is located on the upper surface of the support platform (1).

3. The cantilever-type large module transfer system according to claim 1, characterized in that, The transfer unit is provided in two parts. The two transfer units are arranged in parallel along the translation direction of the support platform (1) and are symmetrical about the longitudinal center plane of the large module (7).

4. The cantilever-type large module transfer system according to claim 1, characterized in that, The transfer unit has multiple moving mechanisms, which are arranged at intervals along the translation direction of the corresponding support platform (1).

5. The cantilever-type large module transfer system according to any one of claims 1-4, characterized in that, The moving mechanism also includes a climbing mechanism, and the self-propelled vehicle (10) is connected to the support platform (1) through the climbing mechanism. The climbing mechanism includes a climbing pole (9) and a climbing drive unit. The climbing pole (9) passes through the support platform (1), its lower end is connected to the self-propelled vehicle (10), and its upper end protrudes from the large module (7). The climbing drive unit is connected to the support platform (1) and is used to drive the support platform (1) to rise and fall relative to the climbing pole (9), or to drive the climbing pole (9) to rise and fall relative to the support platform (1).

6. The cantilever-type large module transfer system according to claim 5, characterized in that, The climbing drive unit includes multiple telescopic cylinders (8), which are arranged in a circumferential pattern around the climbing pole (9). The telescopic cylinders (8) are fixedly connected to the support platform (1) and provide support power to the support platform (1). The telescopic cylinder (8) repeats the sequence of actions such as one of its fixed part and telescopic part being connected to the climbing pole (9), the other being disconnected from the climbing pole (9) - telescopic cylinder (8) telescopic - one of its fixed part and telescopic part being disconnected from the climbing pole (9), the other being connected to the climbing pole (9) - telescopic cylinder (8) resetting, so that the support platform (1) rises and falls relative to the climbing pole (9), or the climbing pole (9) rises and falls relative to the support platform (1).

7. The cantilever-type large module transfer system according to claim 6, characterized in that, The support platform (1) is provided with a mounting hole (3), the climbing pole (9) passes through the mounting hole (3) through the support platform (1), and the climbing drive unit is located in the mounting hole (3).

8. The boom-type large module transfer system according to any one of claims 1-7, characterized in that, The transfer unit is provided in two parts, and the two transfer units are symmetrically arranged on both sides of the longitudinal center plane of the large module (7) parallel to the translation direction of the support platform (1); The lifting mechanism also includes a third lifting mechanism (12) and a fourth lifting mechanism (13). The third lifting mechanism (12) is used to support the bottom surface of the large module (7) between one end of the support platform (1) and the destination, and the fourth lifting mechanism (13) is used to support the bottom surface of the large module (7) between the other end of the support platform (1) and the destination.

9. The cantilever-type large module transfer system according to claim 8, characterized in that, It also includes a track (6), which corresponds to the transfer unit, and the self-propelled vehicle (10) of the transfer unit slides on the corresponding track (6).

10. The boom-type large module transfer system according to any one of claims 1-7, characterized in that, It also includes a track (6), which corresponds to the transfer unit, and the self-propelled vehicle (10) of the transfer unit slides on the corresponding track (6).

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