An assembled independent sleeve arch structure for complex openings of a nuclear power plant and a method thereof

Abstract

The present invention relates to the technical field of arch structure erection, and specifically to an assembled independent arch structure for a complex opening of a nuclear power plant and a method thereof, comprising an arch structure, a vehicle body and a control panel, wherein the arch structure comprises an arch support frame and an inner template, wherein the arch support frames are connected to each other via a plurality of connecting pipes; a lower support rod and an upper support rod distributed in parallel are arranged on the vehicle body, and rod connecting assemblies for detachably connecting to the upper support rod are respectively arranged at both ends of the lower support rod, and the two rod connecting assemblies can adjust the spacing between the lower support rod and the upper support rod, and a pipe supporting and limiting structure capable of supporting and limiting the connecting pipe is arranged on the upper support rod; through the mutual coordination and cooperation among the vehicle body, the rotary support assembly, the side push assembly, the lower support rod, the upper support rod and the rod connecting assembly, the positioning and support of arch structures of different sizes can be achieved, and the auxiliary laying of the connecting pipe on the arch support frame is convenient, thus saving time and effort.

Description

Technical Field

[0001] The invention relates to the technical field of sleeve arch structure erection, and in particular to an assembled independent sleeve arch structure for a complex opening of a nuclear power plant and a method thereof. Background Art

[0002] The nuclear power plant portal arch structure refers to a building structure above the entrance and exit passage of the nuclear reactor door in a nuclear power plant (called the "portal"), usually made of reinforced concrete or steel structure. Its main function is to support the weight inside the portal and protect the reactor and workers from radiation damage. The portal arch structure has a variety of design forms, including round arch, semi-circular and conical, etc., and usually requires strict process and safety measures during construction.

[0003] An assembled independent sleeve arch structure for a tunnel entrance with application number 202110279361.4 and an installation method thereof, include sleeve arch foundations, connecting sleeve arch sections and steel arch frames. The sleeve arch foundations are symmetrically arranged in pairs. Preferably, the sleeve arch structure includes at least one pair of symmetrically arranged sleeve arch foundations. The steel arch frames are fixedly installed on the sleeve arch foundations. The setting of the steel arch frames facilitates the guiding and supporting role in the installation of the connecting sleeve arch sections. The connecting sleeve arch sections are assembled in the steel arch frames, and the connecting sleeve arch sections are connected to the sleeve arch foundations to form an assembled sleeve arch, which is installed using an on-site assembled construction method.

[0004] However, during the erection and installation of the sleeve arch structure, the arch support frame and the connecting pipes thereon are not easy to fix during the binding process, which is time-consuming and labor-intensive, and the distance between the arch support frame and the template is not easy to adjust. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] The purpose of the present invention is to provide an assembled independent sleeve arch structure and method for complex openings of a nuclear power plant in order to solve the above problems.

[0007] (II) Technical solution

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] The present invention provides an assembled independent sleeve arch structure for a complex opening of a nuclear power plant and a method thereof, comprising a sleeve arch structure, a vehicle body and a control panel, wherein the sleeve arch structure comprises an arch support frame and an inner template, wherein the arch support frames are connected to each other through a plurality of connecting pipes;

[0010] The vehicle body is provided with a lower support rod and an upper support rod distributed in parallel, and both ends of the lower support rod are respectively provided with a rod connection assembly for detachably connecting with the upper support rod, and the two rod connection assemblies can adjust the distance between the lower support rod and the upper support rod, and the upper support rod is provided with a pipe support and limit structure capable of supporting and limiting the connection pipe;

[0011] The vehicle body is provided with a rotary support assembly capable of driving the lower support rod to rotate. During the rotation of the lower support rod, the rotary support assembly can adjust the rotation diameter of the lower support rod. Side push-up assemblies capable of abutting and supporting the inner sides of the sleeve arch structure are provided on both sides of the rotary support assembly.

[0012] Furthermore, the swivel support assembly includes a first rotating motor fixedly mounted on the vehicle body, the first rotating motor adopts a dual-axis motor, the two output shaft ends of the first rotating motor are respectively fixedly connected to the rotating shafts, the two rotating shafts are respectively fixedly mounted with rotating columns, the rotating shafts located on both sides of the rotating columns are provided with shaft support plates for supporting their rotation, the lower ends of the shaft support plates are fixedly mounted on the vehicle body, a first hydraulic cylinder is fixedly mounted on each rotating column, the push rod head end of the first hydraulic cylinder and the lower support rod are fixedly connected to each other, and the output end of the control panel is respectively electrically connected to the input end of the first rotating motor and the first hydraulic cylinder.

[0013] Furthermore, the vehicle body is provided with a locking assembly for locking the rotating column after it is rotated to a certain angle, the locking assembly includes a telescopic slide groove that runs through the vehicle body, a second hydraulic cylinder is fixedly provided at the inner lower end of the telescopic slide groove, the push rod head end of the second hydraulic cylinder is facing upward and fixedly connected to a locking block, a plurality of second locking teeth are provided on the upper side of the locking block, and a plurality of first locking teeth are provided on the outer side of the lower part of the rotating column, which are evenly distributed along its circumferential direction, when the push rod of the second hydraulic cylinder reaches the maximum stroke, the first locking teeth and the second locking teeth are in a meshing state with each other, and when the push rod of the second hydraulic cylinder reaches the minimum stroke, the first locking teeth and the second locking teeth are in a separated state from each other.

[0014] Furthermore, the tube support and limiting structure includes a tube limiting plate slidably sleeved on the outer sides of both ends of the upper support rod, the outer side of the tube limiting plate is threadedly connected with a first tightening bolt for abutting and tightening the upper support rod, and one end of the tube limiting plate is provided with a U-shaped groove.

[0015] Furthermore, the rod connecting assembly includes supporting structures respectively arranged at both ends of the lower support rod, and second electric telescopic rods are respectively arranged inside the two ends of the lower support rod, and the push rod head ends of the second electric telescopic rods are respectively connected to second rotating motors, and the output shaft ends of the second rotating motors are respectively connected to the corresponding supporting structures. The supporting structure is provided with a socket for plugging and mating with the end of the upper support rod, and the output end of the control panel is respectively electrically connected to the second electric telescopic rod and the input end of the second rotating motor.

[0016] Furthermore, an electromagnetic suction head is fixedly provided on the inner end surface of the socket, and plugs for magnetic connection with the electromagnetic suction head are fixedly provided on both ends of the upper support rod, the plug has an outer shape of a regular hexagonal column, and a positioning hole for matching with the plug is formed on the inner side of the socket, and the output end of the control panel is electrically connected to the input end of the electromagnetic suction head.

[0017] Furthermore, the support structure includes a first support block and a second support block arranged relatively to each other, the first support block is fixedly connected to one side close to the second support block with two parallel distributed adjustment rods, the second support block is penetrated by an adjustment slide hole for slidingly cooperating with the adjustment rod, the second support block is threadedly connected with a second tightening bolt for abutting and tightening the adjustment rod, a sleeve is fixedly arranged on the first support block, and the socket is opened in the sleeve.

[0018] Furthermore, the side push assembly includes a side push groove opened in the vehicle body, a third hydraulic cylinder is arranged in the side push groove, the tail end of the third hydraulic cylinder is hinged to the side push groove through a hinge seat, the push rod head end of the third hydraulic cylinder is connected to the side push column, the outer side of the side push column is provided with an outer sleeve pad, and a first electric telescopic rod for driving the third hydraulic cylinder to articulate and rotate is arranged in the side push groove, and the output end of the control panel is electrically connected to the input end of the third hydraulic cylinder and the first electric telescopic rod respectively.

[0019] Furthermore, the vehicle body is in the shape of a rectangular parallelepiped, and rail wheels are arranged at the four corners of the lower side of the vehicle body. Two tracks for guiding and cooperating with the four rail wheels are arranged at the lower side.

[0020] A method for assembling an independent sleeve arch for a complex opening of a nuclear power plant comprises the following steps:

[0021] S1: The vehicle body moves to the position where the sleeve arch structure needs to be erected, and the rotary support assembly drives the lower support rod and the upper support rod to rotate until the first hydraulic cylinder is in a vertical state. At this time, the arch support frame is evenly laid on the lower support rod along its axial direction;

[0022] S2: In step S1, the side push assembly, in cooperation with the third hydraulic cylinder and the first electric telescopic rod, drives the side push column to press against the transition end point position of the arc segment and the straight segment of the arch support frame, thereby achieving the fixing of the inner support of the arch support frame;

[0023] S3: After the lower end of the lower support rod is fixed on the ground, the first rotary motor drives the lower support rod and the upper support rod to intermittently rotate a certain angle, adjusts the position of the pipe limit plate on the upper support rod, and realizes the placement and laying of the connecting pipe on the arch support frame by cooperating with the U-shaped slot, and the arch support frame and the connecting pipe are tied and fixed;

[0024] S4: According to the spacing between the arch support frame and the inner formwork, the spacing between the first support block and the second support block is adjusted, and the opening of one end of the lower support rod and the upper support rod is realized by the rod connection assembly, so that the inner formwork can be inserted and laid from the opening, and the side push-up assembly is used to abut and fix the inner side of the inner formwork again. After the inner formwork is erected, the rod connection assembly actually opens the other end of the lower support rod and the upper support rod, and the vehicle body moves back.

[0025] (III) Beneficial effects

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. Through the coordination and cooperation between the car body, the rotary support assembly, the side push assembly, the lower support rod, the upper support rod and the rod connecting assembly, it is possible to realize the positioning support of the sleeve arch structures of different sizes, and facilitate the auxiliary laying of the connecting pipe on the arch support frame, saving time and labor.

[0028] 2. The push rod of the first hydraulic cylinder can be extended and retracted to adjust the distance between the lower support rod and the vehicle body, so as to be suitable for the erection of arch supports of different sizes;

[0029] 3. The rotary support assembly has two functions: one is to realize the erection of arch supports of different sizes, and the other is to realize the auxiliary erection of the connecting pipe on the arch support;

[0030] 4. The locking assembly can lock the position of the rotating column after it rotates to a certain angle, making the support of the lower support rod and the upper support rod by the rotating support assembly more stable;

[0031] 5. The side push top assembly plays the role of assisting the rotary support assembly, which can provide auxiliary three-point support for the sleeve arch structure, making it more stable during the erection of the sleeve arch structure. In addition, the first electric telescopic rod and the third hydraulic cylinder can cooperate to change the support point of the side push column. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0034] Figure 2 The present invention Figure 1 AA cross-sectional structural diagram;

[0035] Figure 3 The present invention Figure 2 A schematic diagram of the local enlarged structure at D;

[0036] Figure 4 The present invention Figure 1 Schematic diagram of the left view structure;

[0037] Figure 5 The present invention Figure 4 BB cross-sectional structure diagram;

[0038] Figure 6 The present invention Figure 5 A schematic diagram of the local enlarged structure at E;

[0039] Figure 7 The present invention Figure 4 Schematic diagram of CC cross-section structure;

[0040] Figure 8 The present invention Figure 7 A schematic diagram of the local enlarged structure at F;

[0041] Fig. 9 The present invention Figure 1 Schematic diagram of the three-dimensional structure;

[0042] Fig.10 The present invention Figure 1 A schematic diagram of a three-dimensional structure in another direction;

[0043] Fig.11 The present invention Fig.10 Schematic diagram of the local enlarged structure at G.

[0044] The reference numerals are as follows: 1. arch structure; 101. arch support frame; 102. connecting pipe; 103. inner template; 2. vehicle body; 3. rotary support assembly; 301. first rotating motor; 302. rotating shaft; 303. shaft support plate; 304. first hydraulic cylinder; 305. rotating column; 306. first latching tooth; 4. locking assembly; 401. telescopic slide; 402. second hydraulic cylinder; 403. locking block; 404. second latching tooth; 5. side push assembly; 501. side push through groove; 502. third hydraulic cylinder; 503. hinged seat; 504. first electric telescopic slide; Retractable rod; 505, side thrust column; 506, outer sleeve pad; 6, lower support rod; 7, upper support rod; 701, plug; 702, pipe limit plate; 703, U-shaped slot; 704, first fastening bolt; 8, rod connecting assembly; 801, supporting structure; 801a, first supporting block; 801b, second supporting block; 801c, adjusting rod; 801d, second fastening bolt; 801e, sleeve; 802, jack; 803, electromagnetic suction head; 804, second electric telescopic rod; 805, second rotating motor; 9, track; 10, rail wheel; 11, control panel. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] See also Figure 1-11 As shown, the present invention provides an assembled independent sleeve arch structure for a complex opening of a nuclear power plant, including a sleeve arch structure 1, a car body 2 and a control panel 11, wherein the car body 2 is in the shape of a rectangular parallelepiped, rail wheels 10 are arranged at the four corners of the lower side of the car body 2, and two tracks 9 for guiding and cooperating with the four rail wheels 10 are arranged on the lower side. The sleeve arch structure 1 includes an arch support frame 101 and an inner formwork 103, and the arch support frames 101 are connected to each other through a plurality of connecting pipes 102; in addition, the sleeve arch structure 1 also includes an outer formwork and side sealing end plates and other structures for pouring cement.

[0047] The vehicle body 2 is provided with a lower support rod 6 and an upper support rod 7 which are distributed in parallel. Both ends of the lower support rod 6 are provided with a rod connection assembly 8 for detachably connecting with the upper support rod 7. The two rod connection assemblies 8 can adjust the distance between the lower support rod 6 and the upper support rod 7. The upper support rod 7 is provided with a tube support and limit structure which can support and limit the connection tube 102.

[0048] A rotary support assembly 3 capable of driving the lower support rod 6 to rotate is provided on the vehicle body 2. During the rotation of the lower support rod 6, the rotary support assembly 3 can adjust the rotation diameter of the lower support rod 6. Side push-up assemblies 5 capable of abutting and supporting the two sides of the inner side of the sleeve arch structure 1 are provided on both sides of the rotary support assembly 3.

[0049] See the instruction manual Figure 2 and 8As shown, the rotary support assembly 3 includes a first rotary motor 301 fixedly arranged on the vehicle body 2, the first rotary motor 301 adopts a double-axis motor, the two output shaft ends of the first rotary motor 301 are respectively fixedly connected with a rotating shaft 302, and the two rotating shafts 302 are respectively fixedly arranged with a rotating column 305, and the rotating shafts 302 located on both sides of the rotating column 305 are provided with an axis support plate 303 for rotating support thereof, and the lower end of the axis support plate 303 is fixedly arranged on the vehicle body 2, and each rotating column 305 is fixedly arranged with a first hydraulic cylinder 304, and the push rod head end of the first hydraulic cylinder 304 is fixedly connected with the lower support rod 6, and the output end of the control panel 11 is respectively electrically connected to the input end of the first rotary motor 301 and the first hydraulic cylinder 304. Through the above-mentioned specific structural design, the first rotary motor 301 can drive the lower support rod 6 to rotate at an angle, so as to cooperate to realize the auxiliary erection of the connecting pipe 102 at different positions outside the arch support frame 101, thereby facilitating the binding of the connecting pipe 102 on the arch support frame 101 by the staff. In addition, the push rod of the first hydraulic cylinder 304 can be extended and retracted to adjust the distance between the lower support rod 6 and the vehicle body 2, so as to be suitable for the installation of arch supports 101 of different sizes.

[0050] Therefore, the rotary support assembly 3 has two functions. The first function is to realize the installation of arch supports 101 of different sizes, and the second function is to realize the auxiliary installation of the connecting pipe 102 on the arch support frame 101.

[0051] See the instruction manual Figure 2 and 8 As shown, the vehicle body 2 is provided with a locking assembly 4 for locking the rotating column 305 after rotating a certain angle, and the locking assembly 4 includes a telescopic slide 401 that runs through the vehicle body 2, and a second hydraulic cylinder 402 is fixedly provided at the lower end of the inner part of the telescopic slide 401, and the push rod head of the second hydraulic cylinder 402 is upward and fixedly connected with a locking block 403, and a plurality of second locking teeth 404 are provided on the upper side of the locking block 403, and a plurality of first locking teeth 306 uniformly distributed along its circumferential direction are provided on the lower outer side of the rotating column 305, and when the push rod of the second hydraulic cylinder 402 reaches the maximum stroke, the first locking teeth 306 and the second locking teeth 404 are in a state of meshing with each other, and when the push rod of the second hydraulic cylinder 402 reaches the minimum stroke, the first locking teeth 306 and the second locking teeth 404 are in a state of separation from each other. In practical applications, the locking assembly 4 can realize the position locking of the rotating column 305 after rotating a certain angle, so that the support of the lower support rod 6 and the upper support rod 7 by the rotary support assembly 3 is more stable.

[0052] In order to cooperate with the upper support rod 7 to realize the auxiliary laying of the connecting pipe 102, the pipe support and limiting structure includes a pipe limiting plate 702 which is slidably sleeved on the outer sides of the two ends of the upper support rod 7, and the outer side of the pipe limiting plate 702 is threadedly connected with a first fixing bolt 704 for abutting and tightening the upper support rod 7, and one end of the pipe limiting plate 702 is provided with a U-shaped groove 703. In actual application, one end of the pipe limiting plate 702 with the U-shaped groove 703 passes through the gap between the arch support frames 101, so that the connecting pipe 102 is conveniently inserted into the U-shaped groove 703 for positioning and placement.

[0053] See the instruction manual Figure 2 , 3 As shown in Figure 11, the rod connection assembly 8 includes a support structure 801 respectively arranged at both ends of the lower support rod 6, and a second electric telescopic rod 804 is respectively arranged inside the two ends of the lower support rod 6, and the push rod head end of the second electric telescopic rod 804 is respectively connected to the second rotary motor 805, and the output shaft end of the second rotary motor 805 is respectively connected to the corresponding support structure 801. The support structure 801 is provided with a socket 802 for plugging and matching with the end of the upper support rod 7, and the output end of the control panel 11 is respectively electrically connected to the second electric telescopic rod 804 and the input end of the second rotary motor 805. An electromagnetic suction head 803 is fixedly arranged on the inner end surface of the socket 802, and plugs 701 for magnetic connection with the electromagnetic suction head 803 are respectively fixedly arranged at both ends of the upper support rod 7. The outer shape of the plug 701 is a regular hexagonal column shape, and a positioning hole for matching with the plug 701 is formed inside the socket 802, and the output end of the control panel 11 is electrically connected to the input end of the electromagnetic suction head 803. The support structure 801 includes a first support block 801a and a second support block 801b which are arranged opposite to each other. The first support block 801a is fixedly connected to two parallel adjustment rods 801c on one side close to the second support block 801b. The second support block 801b is provided with an adjustment slide hole for slidingly connecting with the adjustment rod 801c. The second support block 801b is threadedly connected with a second fixing bolt 801d for abutting and fixing the adjustment rod 801c. The first support block 801a is fixedly provided with a sleeve 801e, and the socket 802 is provided in the sleeve 801e. The rod connection assembly 8 can realize the matching connection between the two ends of the lower support rod 6 and the upper support rod 7, thereby realizing

[0054] See the instruction manual Figure 2 and 5As shown, the side push assembly 5 includes a side push slot 501 provided in the vehicle body 2, a third hydraulic cylinder 502 is arranged in the side push slot 501, the tail end of the third hydraulic cylinder 502 is hinged to the side push slot 501 through a hinge seat 503, the push rod head end of the third hydraulic cylinder 502 is connected to a side push column 505, the outer side of the side push column 505 is sleeved with an outer sleeve 506, a first electric telescopic rod 504 for driving the third hydraulic cylinder 502 to hinge and rotate is arranged in the side push slot 501, and the output end of the control panel 11 is electrically connected to the input end of the third hydraulic cylinder 502 and the first electric telescopic rod 504 respectively. Through the above specific structure, the side push assembly 5 plays the role of assisting the rotating support assembly 3, and is used to play the role of assisting the three-point support of the sleeve arch structure 1, so that the sleeve arch structure 1 is more stable during the erection process. In addition, the first electric telescopic rod 504 and the third hydraulic cylinder 502 cooperate to change the support point of the side push column 505.

[0055] Working principle:

[0056] The vehicle body 2 moves on the track 9 through the rail wheel 10 and can be moved to the position where the sleeve arch structure 1 needs to be erected. The swivel support assembly 3 drives the lower support rod 6 and the upper support rod 7 to rotate until the first hydraulic cylinder 304 is in a vertical state. Specifically, the output shaft of the first rotating motor 301 can drive the rotating shaft 302 to rotate. The rotation of the rotating shaft 302 drives the rotating column 305 to rotate, thereby driving the first hydraulic cylinder 304 provided on the rotating column 305 to rotate to adjust the angular position of the lower support rod 6 and the upper support rod 7. At this time, the arch support frame 101 is evenly laid on the lower support rod 6 along its axial direction. The side push assembly 5, with the cooperation of the third hydraulic cylinder 502 and the first electric telescopic rod 504, drives the side push column 505 to press against the transition end point position of the arc segment and the straight segment of the arch support frame 101, thereby realizing the inner support and fixation of the arch support frame 101; the lower support rod 6 After the lower end of is fixed on the ground, the first rotating motor 301 drives the lower support rod 6 and the upper support rod 7 to intermittently rotate a certain angle, adjusts the position of the pipe limiting plate 702 on the upper support rod 7, and cooperates with the U-shaped groove 703 to realize the placement and laying of the connecting pipe 102 on the arch support frame 101, and the arch support frame 101 and the connecting pipe 102 are tied and fixed; according to the spacing between the arch support frame 101 and the inner template 103, the spacing between the first support block 801a and the second support block 801b is adjusted, and the opening of one end of the lower support rod 6 and the upper support rod 7 is realized by the rod connecting assembly 8, so that the inner template 103 can be inserted and laid from the opening, and the side push-up assembly 5 is used to realize the abutment and fixation of the inner side of the inner template 103 again. After the inner template 103 is erected, the rod connecting assembly 8 actually opens the opening of the other end of the lower support rod 6 and the upper support rod 7, and the car body 2 moves back.

[0057] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An assembled independent sleeve arch structure for a complex opening of a nuclear power plant, characterized by: It comprises an arch structure (1), a vehicle body (2) and a control panel (11), wherein the arch structure (1) comprises an arch support frame (101) and an inner template (103), and the arch support frames (101) are connected to each other via a plurality of connecting pipes (102); The vehicle body (2) is provided with a lower support rod (6) and an upper support rod (7) which are distributed in parallel, and rod connection assemblies (8) for detachably connecting to the upper support rod (7) are respectively provided at both ends of the lower support rod (6), and the two rod connection assemblies (8) are capable of adjusting the distance between the lower support rod (6) and the upper support rod (7), and the upper support rod (7) is provided with a tube support and limiting structure capable of supporting and limiting the connection tube (102); The vehicle body (2) is provided with a rotary support assembly (3) capable of driving the lower support rod (6) to rotate. During the rotation of the lower support rod (6), the rotary support assembly (3) can adjust the rotation diameter of the lower support rod (6). Side push-up assemblies (5) capable of abutting and supporting the inner sides of the sleeve arch structure (1) are provided on both sides of the rotary support assembly (3).

2. According to claim 1, the assembled independent sleeve arch structure of a complex opening of a nuclear power plant is characterized by: The rotary support assembly (3) comprises a first rotary motor (301) fixedly mounted on the vehicle body (2); the first rotary motor (301) is a double-shaft motor; two output shaft ends of the first rotary motor (301) are respectively fixedly connected to rotary shafts (302); rotary columns (305) are respectively fixedly mounted on the two rotary shafts (302); shaft support plates (303) for rotationally supporting the rotary shafts (302) are disposed on the rotary shafts (302) on both sides of the rotary columns (305); the lower ends of the shaft support plates (303) are fixedly mounted on the vehicle body (2); a first hydraulic cylinder (304) is fixedly mounted on each rotary column (305); a push rod head end of the first hydraulic cylinder (304) is fixedly connected to a lower support rod (6); and an output end of the control panel (11) is respectively electrically connected to an input end of the first rotary motor (301) and a first hydraulic cylinder (304).

3. According to claim 2, the assembled independent sleeve arch structure of a complex opening of a nuclear power plant is characterized by: The vehicle body (2) is provided with a locking assembly (4) for locking the rotating column (305) after rotating it to a certain angle. The locking assembly (4) comprises a telescopic slide groove (401) extending through the vehicle body (2). A second hydraulic cylinder (402) is fixedly arranged at the lower end of the inner part of the telescopic slide groove (401). The push rod head of the second hydraulic cylinder (402) faces upward and is fixedly connected to a locking block (403). A plurality of second locking teeth (404) are arranged on the upper side of the locking block (403). A plurality of first locking teeth (306) evenly distributed along the circumferential direction of the rotating column (305) are arranged on the outer side of the lower part. When the push rod of the second hydraulic cylinder (402) reaches the maximum stroke, the first locking teeth (306) and the second locking teeth (404) are in a meshing state with each other. When the push rod of the second hydraulic cylinder (402) reaches the minimum stroke, the first locking teeth (306) and the second locking teeth (404) are in a separated state with each other.

4. The assembled independent sleeve arch structure for complex openings of a nuclear power plant according to claim 3 is characterized by: The tube support and limiting structure comprises a tube limiting plate (702) slidably sleeved on the outer sides of both ends of the upper support rod (7), a first fixing bolt (704) for abutting and fixing the upper support rod (7) being threadedly connected on the outer side of the tube limiting plate (702), and a U-shaped groove (703) is provided at one end of the tube limiting plate (702).

5. According to claim 4, the assembled independent sleeve arch structure of a complex opening of a nuclear power plant is characterized by: The rod connection assembly (8) comprises support structures (801) respectively arranged at both ends of the lower support rod (6); second electric telescopic rods (804) are respectively arranged inside the two ends of the lower support rod (6); the push rod heads of the second electric telescopic rods (804) are respectively connected to second rotating motors (805); the output shaft ends of the second rotating motors (805) are respectively connected to the corresponding support structures (801); the support structures (801) are provided with sockets (802) for plugging and matching with the ends of the upper support rods (7); and the output end of the control panel (11) is respectively electrically connected to the input ends of the second electric telescopic rod (804) and the second rotating motor (805).

6. The assembled independent sleeve arch structure for complex openings of a nuclear power plant according to claim 5, characterized in that: An electromagnetic suction head (803) is fixedly provided on the inner end surface of the jack (802), plugs (701) for magnetically connecting to the electromagnetic suction head (803) are fixedly provided at both ends of the upper support rod (7), the plug (701) is in the shape of a regular hexagonal column, a positioning hole for matching with the plug (701) is formed on the inner side of the jack (802), and the output end of the control panel (11) is electrically connected to the input end of the electromagnetic suction head (803).

7. The assembled independent sleeve arch structure for complex openings of a nuclear power plant according to claim 5, characterized in that: The support structure (801) comprises a first support block (801a) and a second support block (801b) arranged opposite to each other; the first support block (801a) is fixedly connected to a side close to the second support block (801b) with two parallelly distributed adjustment rods (801c); the second support block (801b) is provided with an adjustment sliding hole for cooperating and slidingly connecting with the adjustment rod (801c); the second support block (801b) is threadedly connected with a second fixing bolt (801d) for achieving abutment and fixing of the adjustment rod (801c); the first support block (801a) is fixedly provided with a sleeve (801e); and the insertion hole (802) is provided in the sleeve (801e).

8. The assembled independent sleeve arch structure for complex openings of a nuclear power plant according to claim 7, characterized in that: The side push assembly (5) comprises a side push slot (501) provided in the vehicle body (2), a third hydraulic cylinder (502) being arranged in the side push slot (501), a rear end of the third hydraulic cylinder (502) being hinged to the side push slot (501) via a hinge seat (503), a push rod head end of the third hydraulic cylinder (502) being connected to a side push column (505), an outer sleeve (506) being sleeved on the outer side of the side push column (505), a first electric telescopic rod (504) for driving the third hydraulic cylinder (502) to hinge and rotate being arranged in the side push slot (501), and an output end of the control panel (11) being electrically connected to input ends of the third hydraulic cylinder (502) and the first electric telescopic rod (504), respectively.

9. The assembled independent sleeve arch structure for complex openings of a nuclear power plant according to claim 1, characterized in that: The vehicle body (2) is in the shape of a rectangular parallelepiped, and rail wheels (10) are arranged at the four corners of the lower side of the vehicle body (2). Two rails (9) for guiding and cooperating with the four rail wheels (10) are arranged at the lower sides thereof.

10. A method for assembling independent arches for complex openings in nuclear power plants, characterized in that: The assembled independent sleeve arch structure according to claim 8 comprises the following steps: S1: the vehicle body (2) moves to a position where the sleeve arch structure (1) needs to be erected, and the rotary support assembly (3) drives the lower support rod (6) and the upper support rod (7) to rotate until the first hydraulic cylinder (304) is in a vertical state, and at this time, the arch support frame (101) is evenly laid on the lower support rod (6) along its axial direction; S2: In step S1, the side thrust assembly (5) drives the side thrust column (505) to press against the transition end point of the arc segment and the straight segment of the arch support frame (101) under the cooperation of the third hydraulic cylinder (502) and the first electric telescopic rod (504), thereby achieving the internal support and fixation of the arch support frame (101); S3: After the lower end of the lower support rod (6) is fixed on the ground, the first rotating motor (301) drives the lower support rod (6) and the upper support rod (7) to intermittently rotate at a certain angle, adjusts the position of the pipe stop plate (702) on the upper support rod (7), and cooperates with the U-shaped slot (703) to achieve the placement and laying of the connecting pipe (102) on the arch support frame (101), and the arch support frame (101) and the connecting pipe (102) are tied and fixed; S4: According to the spacing between the arch support frame (101) and the inner template (103), the spacing between the first support block (801a) and the second support block (801b) is adjusted, and the rod connection assembly (8) realizes the opening of one end of the lower support rod (6) and the upper support rod (7), so that the inner template (103) can be inserted and laid from the opening, and the side push-up assembly (5) is used to abut and fix the inner side of the inner template (103) again. After the inner template (103) is erected, the rod connection assembly (8) realizes the opening of the other end of the lower support rod (6) and the upper support rod (7), and the vehicle body (2) is moved back out.

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