An integrated assembly device for MOX components

Abstract

The present invention provides an integrated assembly device for MOX components. A feeding mechanism moves the fuel rods in a rod box to a pre-positioning mechanism. The pre-positioning mechanism positions the fuel rods axially and circumferentially so that the through grooves on the end plugs of the fuel rods correspond to the plug-in parts of the grid plates on the work frame. A rod bundle assembly mechanism moves the fuel rods to the grid plates so that the fuel rods and the grid plates are plugged in. A plurality of fuel rods plugged in the grid plates form a rod bundle structure. An operating head fixing mechanism drives the operating head to move to be plugged in and connected with an outer sleeve. The outer sleeve fixing mechanism drives the outer sleeve with the operating head to be sleeved on the rod bundle structure to form a MOX component. A flipping mechanism drives the MOX component to flip to a vertical state. A welding mechanism welds and fixes the two ends of the outer sleeve in the vertical MOX component to the operating head and the grid plate structure respectively. The present invention can realize the automation and intelligence of the integrated assembly process of the MOX component to improve its assembly efficiency and automation level.

Description

Technical Field

[0001] The invention relates to the technical field of radioactive nuclear fuel manufacturing, and in particular to an integrated MOX component assembly device. Background Art

[0002] In the field of fast reactor MOX component manufacturing, the assembly process of fast reactor MOX components is complicated, the operating materials have great radioactive hazards, manual operation is impossible at close range, and the assembly gap between the fuel rods and the grid plates during the rod bundle assembly process is small. There are problems such as difficulty in personnel operation and low assembly efficiency due to shielding protection. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an integrated assembly device for MOX components in view of the above-mentioned deficiencies in the prior art, so as to reduce the radioactive hazards to personnel and improve the assembly efficiency and automation level thereof.

[0004] The technical solution adopted to solve the technical problem of the present invention is:

[0005] An integrated MOX assembly device comprises: a work frame, a truss, a feeding mechanism, a pre-positioning mechanism, a rod bundle assembly mechanism, a component assembly mechanism, a flipping mechanism and a welding mechanism.

[0006] The work frame is provided with a material preparation station, a pre-positioning station and an assembly station, which are arranged in sequence along a direction perpendicular to the axial direction of the fuel rods, and the truss is arranged between the material preparation station and the pre-positioning station.

[0007] The rod box containing the fuel rods is arranged on the material preparation station, and the grid structure of the MOX assembly is fixed on the assembly station.

[0008] The loading mechanism is movably connected to the truss and is used to move the fuel rods in the rod box to the pre-positioning station.

[0009] The pre-positioning mechanism is arranged on the pre-positioning station and is used to position the fuel rod axially and circumferentially so that the through groove on the end plug of the fuel rod corresponds to the plug-in portion of the grid plate of the grid plate structure.

[0010] The rod bundle assembly mechanism is movably connected to the truss and is used to move the fuel rods positioned on the pre-positioning mechanism to the grid plate of the grid structure, so that the fuel rods and the grid plate are plugged through the through grooves and the plug-in parts, and the multiple fuel rods plugged on the grid plate form a rod bundle structure.

[0011] The assembly assembly mechanism is arranged on the assembly station, and includes a support frame, an outer sleeve fixing mechanism and an operating head fixing mechanism. The grid plate structure is fixed on the support frame, the outer sleeve fixing mechanism is slidably arranged on the support frame, and is used to fix the outer sleeve of the MOX assembly. The operating head fixing mechanism is slidably arranged on the support frame, and is used to fix the operating head of the MOX assembly. The grid plate structure, the outer sleeve and the operating head are spaced and coaxially arranged along the axial direction of the fuel rod. The operating head fixing mechanism can move relative to the support frame toward the outer sleeve so that the operating head is plugged and connected with the outer sleeve. The outer sleeve fixing mechanism can move relative to the support frame toward the grid plate so that the outer sleeve with the operating head is sleeved on the rod bundle structure to form a MOX assembly.

[0012] The flipping mechanism is connected to the support frame for driving the support frame to flip so that the MOX assembly is in a vertical state.

[0013] The welding mechanism is arranged on one side of the work frame and is used to respectively weld and fix the two ends of the outer sleeve of the vertical MOX assembly to the operating head and the grid structure.

[0014] Optionally, the pre-positioning mechanism includes a support seat, a clamping rotation mechanism, an end plug posture adjustment mechanism and a linear slide.

[0015] The support seat, the end plug posture adjustment mechanism and the linear slide are all arranged on the workbench. The support seat has a groove for supporting the fuel rod. The clamping rotation mechanism and the end plug posture adjustment mechanism are arranged on both sides of the support seat along the axial direction of the fuel rod.

[0016] The clamping and rotating mechanism is arranged on a linear slide, and the linear slide can drive the clamping and rotating mechanism to move linearly relative to the work frame, so that the fuel rod abuts between the clamping and rotating mechanism and the end plug posture adjustment mechanism, and the end surface position where the end plug posture adjustment mechanism abuts against the fuel rod corresponds to the axial positioning position of the fuel rod end plug.

[0017] The end plug posture adjustment mechanism is used to detect and locate the circumferential state of the fuel rod, and the clamping rotation mechanism is used to drive the fuel rod to rotate so that the fuel rod is rotated to its circumferential positioning position.

[0018] Optionally, the clamping and rotating mechanism comprises a pneumatic clamp and a servo rotating mechanism,

[0019] The pneumatic gripper clamps the corresponding end of the fuel rod after the fuel rod abuts against it. The servo rotation mechanism is arranged on the linear slide and is transmission-connected with the pneumatic gripper to drive the pneumatic gripper to rotate so as to drive the fuel rod to rotate.

[0020] Optionally, the end plug posture adjustment mechanism includes a push-to-align mechanism and a beam switch, and the push-to-align mechanism and the beam switch are both arranged on the workbench.

[0021] The push mechanism is used to abut against the fuel rod, and the end surface position where it abuts against the fuel rod corresponds to the axial positioning position of the fuel rod end plug.

[0022] The through-slot switch corresponds to the position of the through-slot of the fuel rod end plug, and its light emitting component and receiving component are arranged on both sides of the radial direction of the fuel rod. The through-slot switch is turned on when the through-slot is arranged horizontally or vertically, and transmits a signal to the industrial computer. The industrial computer controls the clamping rotating mechanism to rotate 90° or stop rotating according to the signal of the through-slot switch being turned on.

[0023] Optionally, the end plug posture adjustment mechanism also includes a wire winding identification device, which is arranged on the workbench and corresponds to the starting position of the wire winding on the fuel rod. It is used to detect the distance between the bottom of the fuel rod and the wire winding identification device when the fuel rod rotates to its circumferential positioning position, so as to determine the direction of the starting point of the wire winding on the fuel rod, and transmit a signal to the industrial computer. The industrial computer controls the clamping rotating mechanism to rotate 180° or stop rotating according to the direction signal of the starting point of the wire winding on the fuel rod.

[0024] Optionally, the end plug posture adjustment mechanism also includes a hole calibration structure, which includes a lifting drive mechanism and a conical needle, the conical needle matches the through hole at the end of the fuel rod end plug through slot and is transmission-connected to the lifting drive mechanism, the lifting drive mechanism is arranged on the workbench, and is used to drive the conical needle to lift and insert into the vertically arranged through slot to keep the fuel rod in its circumferential positioning position.

[0025] Optionally, the end plug posture adjustment mechanism further includes a rotation limiting clamp, which is provided on the working frame and is used to circumferentially limit the fuel rod during its rotation to prevent the fuel rod from swinging its tail.

[0026] Optionally, the feeding mechanism includes a hooking mechanism, a first lifting mechanism and a first translation mechanism.

[0027] The hooking mechanism is connected to the first lifting mechanism and is used to hook the fuel rods in the rod box and drop the fuel rods onto the pre-positioning mechanism.

[0028] The first lifting mechanism is movably connected to the first translation mechanism, and can move up and down relative to the first translation mechanism to drive the hooking mechanism to approach or move away from the rod box / pre-positioning mechanism.

[0029] The first translation mechanism is movably connected to the truss and can move horizontally relative to the truss to drive the hooking mechanism and the first lifting mechanism to translate between the rod box and the pre-positioning mechanism.

[0030] Optionally, the hooking mechanism includes a hook and a swinging drive mechanism, the swinging drive mechanism is arranged on the first lifting mechanism and is transmission-connected to the hook for driving the hook to swing so that the hook hooks the fuel rods in the rod box and drops the fuel rods onto the pre-positioning mechanism.

[0031] Optionally, the rod bundle assembly mechanism includes a clamping claw assembly, a second lifting mechanism and a second translation mechanism.

[0032] The clamp assembly is arranged on the second lifting mechanism, and is used to grab the fuel rods that have been positioned on the pre-positioning mechanism, or release the fuel rods after the fuel rods are plugged into the grid plate.

[0033] The second translation mechanism is movably connected to the truss and can move horizontally relative to the truss to drive the clamping jaw assembly and the second lifting mechanism to translate between the pre-positioning mechanism and the grid plate.

[0034] The second lifting mechanism is movably connected to the second translation mechanism and can be lifted and lowered relative to the second translation mechanism to drive the clamping claw assembly and the fuel rod to move toward the grid plate, so that the fuel rod and the grid plate are plugged through the through slot and the plug-in portion.

[0035] Optionally, the component assembly mechanism further includes a clustering mechanism,

[0036] The clustering mechanism is arranged on the working frame and is located below the supporting frame. It can rise relative to the working frame to extend out of the supporting frame to support the rod cluster structure inserted on the grid plate so that the rod cluster structure remains in a horizontal state.

[0037] Optionally, the rod bundle structure is a horizontally arranged hexahedral structure.

[0038] The clustering mechanism includes a mounting frame, a contoured support block and two support members. The mounting frame is movably connected to the working frame and can be lifted and lowered relative to the working frame. The contoured support block is arranged on the mounting frame and has contoured grooves that cooperate with the four surfaces of the lower part of the rod bundle structure. The two support members are rotatably connected to the mounting frame and are arranged on both sides of the contoured support block. The support members can rotate toward or away from the rod bundle structure relative to the mounting frame to abut or disengage from the surface corresponding to the upper part of the rod bundle structure.

[0039] Optionally, the outer sleeve fixing mechanism includes a propulsion mechanism, a base plate and a plurality of clamping mechanisms, the plurality of clamping mechanisms are arranged at intervals along the axial direction of the outer sleeve, and the clamping mechanisms are fixed on the base plate and are used to clamp or loosen the outer sleeve.

[0040] The bottom plate is slidably mounted on the support frame, and the propulsion mechanism is fixed on the support frame and is transmission-connected with the bottom plate, and is used to drive the bottom plate to move axially along the outer sleeve, so as to drive the outer sleeve with the operating head to move to be sleeved on the rod bundle structure.

[0041] Optionally, the flipping mechanism includes a flipping driving mechanism, a limiting mechanism and a base.

[0042] The flip driving mechanism is arranged on the base and is connected to the support frame for driving the support frame to flip so that the MOX assembly on the support frame is in a vertical state.

[0043] The limiting mechanism is arranged on the base, and is used to limit the MOX assembly after the support frame is turned over, so as to keep it in a vertical state.

[0044] Optionally, the welding mechanism includes an operating machine, a telescopic mechanism and a welding head, the telescopic mechanism is vertically slidably arranged on the operating machine, the welding head is arranged on the telescopic mechanism, and the telescopic mechanism is used to drive the welding head to telescope to approach or move away from the MOX component.

[0045] In the present invention, a new MOX assembly integrated assembly device is designed. The feeding mechanism moves the fuel rods in the rod box to the pre-positioning mechanism, and the pre-positioning mechanism positions the fuel rods axially and circumferentially so that the through grooves on the end plugs of the fuel rods are arranged vertically and correspond to the plug-in parts of the grid plates on the work frame. The rod bundle assembly mechanism moves the fuel rods positioned on the pre-positioning mechanism to the grid plates so that the fuel rods and the grid plates are plugged through the through grooves and the plug-in parts, and the multiple fuel rods plugged on the grid plates form a rod bundle structure; the operating head fixing mechanism drives the operating head to move toward the outer sleeve until it is plugged and connected with the outer sleeve, and the outer sleeve fixing mechanism drives the outer sleeve with the operating head to move toward the grid plate so that it is sleeved on the rod bundle structure to form a MOX assembly, and the flipping mechanism drives the MOX assembly to flip to a vertical state, and the welding mechanism welds and fixes the two ends of the outer sleeve in the vertical MOX assembly to the operating head and the grid plate structure respectively. Thus, the full process automation operation from fuel rod to assembly manufacturing is realized, the radioactive hazards to personnel are reduced, and the automation level and efficiency of MOX assembly assembly are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 A schematic diagram of the structure of the MOX module integrated assembly device provided in Example 1 of the present invention;

[0047] Figure 2 It is a structural schematic diagram of the pre-positioning mechanism;

[0048] Figure 3 It is a structural schematic diagram of the clamping and rotating mechanism;

[0049] Figure 4 It is a structural schematic diagram of the lower end plug posture adjustment mechanism;

[0050] Figure 5 It is a structural schematic diagram of the feeding mechanism;

[0051] Figure 6 It is a structural diagram of the material preparation mechanism;

[0052] Figure 7 is a structural schematic diagram of the assembly mechanism;

[0053] Figure 8 is a schematic diagram of the structure of the clamping jaw assembly;

[0054] Fig. 9 is a structural schematic diagram of a second lifting mechanism;

[0055] Fig.10 is a structural schematic diagram of a second translation mechanism;

[0056] Fig.11 It is a structural diagram of the vision-assisted positioning system;

[0057] Fig.12 It is a structural schematic diagram of the fixing mechanism;

[0058] Fig.13 It is a structural schematic diagram of the clustering mechanism;

[0059] Fig.14 is a structural schematic diagram of the outer sleeve fixing mechanism;

[0060] Fig.15 It is a structural schematic diagram of the operating head fixing mechanism;

[0061] Fig.16 It is a partial structural schematic diagram of the MOX component integrated assembly device;

[0062] Fig.17 It is a structural diagram of the welding mechanism.

[0063] In the figure: 1-feeding mechanism, 11-hooking mechanism, 111-hooking claw, 112-swinging drive mechanism, 12-first lifting mechanism, 121-first guide rail slider, 122-first servo motor, 123-gear rack pair, 13-first translation mechanism, 131-screw nut pair, 132-tray, 133-second servo motor, 2-pre-positioning mechanism, 21-support frame, 22-clamping rotation mechanism, 221-pneumatic clamping claw, 222-servo rotation mechanism, 23-lower end plug posture adjustment mechanism, 231-rotation limit Clamp, 232-wire identification device, 233-scanning device, 234-push mechanism, 235-hole calibration structure, 236-conical needle, 237-shooting switch, 3-material preparation mechanism, 31-roller conveying mechanism, 32-rod box transfer mechanism, 33-shielding body, 4-rod bundle assembly mechanism, 41-claw assembly, 411-rigid clamp, 412-auxiliary clamp, 413-limit clamp, 414-profile clamp, 415, clamp, 42-second lifting mechanism, 421-screw motor, 422-guide rail, 423- Second guide rail slider, 43-second translation mechanism, 431-grating ruler, 44-truss, 45-visual assisted positioning system, 451-camera, 452-telescopic mechanism, 453-mounting frame, 5, working frame, 6-component assembly mechanism, 61-support frame, 62-outer sleeve fixing mechanism, 621-propelling mechanism, 622-bottom plate, 623-clamping mechanism, 6231-contact tooling, 6232-clamping tooling, 63, operating head fixing mechanism, 631-propelling mechanism, 632-slide plate, 633-clamping mechanism, 6 4-bundling mechanism, 641-mounting frame, 642-contact support block, 643-support member, 65-fixing mechanism, 651-contact clamping claw, 652-clamping cylinder, 653-limiting device, 7-flipping mechanism, 71-flipping drive mechanism, 72-limiting mechanism, 73-base, 8-welding mechanism, 81-operating machine, 82-telescopic mechanism, 83-welding head, 9-MOX assembly, 91-grid structure, 911-grid, 912-lower transition component, 92-fuel rod, 93-outer sleeve, 94-operating head. DETAILED DESCRIPTION

[0064] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention.

[0065] In the description of the present invention, it should be noted that the directions or positional relationships indicated by “upper” and the like are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience and simplification of the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0066] In the description of the present invention, the terms “first” and “second” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0067] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connect", "set", "install", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] An integrated MOX assembly device comprises: a work frame, a truss, a feeding mechanism, a pre-positioning mechanism, a rod bundle assembly mechanism, a component assembly mechanism, a flipping mechanism and a welding mechanism.

[0069] The work frame is provided with a material preparation station, a pre-positioning station and an assembly station, which are arranged in sequence along a direction perpendicular to the axial direction of the fuel rods, and the truss is arranged between the material preparation station and the pre-positioning station.

[0070] The rod box containing the fuel rods is arranged on the material preparation station, and the grid structure of the MOX assembly is fixed on the assembly station.

[0071] The loading mechanism is movably connected to the truss and is used to move the fuel rods in the rod box to the pre-positioning station.

[0072] The pre-positioning mechanism is arranged on the pre-positioning station and is used to position the fuel rod axially and circumferentially so that the through groove on the end plug of the fuel rod corresponds to the plug-in portion of the grid plate of the grid plate structure.

[0073] The rod bundle assembly mechanism is movably connected to the truss and is used to move the fuel rods positioned on the pre-positioning mechanism to the grid plate of the grid structure, so that the fuel rods and the grid plate are plugged through the through grooves and the plug-in parts, and the multiple fuel rods plugged on the grid plate form a rod bundle structure.

[0074] The assembly assembly mechanism is arranged on the assembly station, and includes a support frame, an outer sleeve fixing mechanism and an operating head fixing mechanism. The grid plate structure is fixed on the support frame, the outer sleeve fixing mechanism is slidably arranged on the support frame, and is used to fix the outer sleeve of the MOX assembly. The operating head fixing mechanism is slidably arranged on the support frame, and is used to fix the operating head of the MOX assembly. The grid plate structure, the outer sleeve and the operating head are spaced and coaxially arranged along the axial direction of the fuel rod. The operating head fixing mechanism can move relative to the support frame toward the outer sleeve so that the operating head is plugged and connected with the outer sleeve. The outer sleeve fixing mechanism can move relative to the support frame toward the grid plate so that the outer sleeve with the operating head is sleeved on the rod bundle structure to form a MOX assembly.

[0075] The flipping mechanism is connected to the support frame for driving the support frame to flip so that the MOX assembly is in a vertical state.

[0076] The welding mechanism is arranged on one side of the work frame and is used to respectively weld and fix the two ends of the outer sleeve of the vertical MOX assembly to the operating head and the grid structure.

[0077] Embodiment 1:

[0078] like Figure 1 As shown, this embodiment provides a MOX assembly integrated assembly device, including: a work frame 5, a truss 44, a feeding mechanism 1, a pre-positioning mechanism 2, a rod bundle assembly mechanism 4, an assembly assembly mechanism 6, a flipping mechanism 7 and a welding mechanism 8.

[0079] The work frame 5 is provided with a material preparation station, a pre-positioning station and an assembly station, which are arranged in sequence along a direction perpendicular to the axial direction of the fuel rod 92. The truss 44 is arranged between the material preparation station and the pre-positioning station.

[0080] The rod box containing the fuel rods 92 is arranged on the material preparation station, and the grid structure 91 of the MOX assembly 9 is fixed on the assembly station.

[0081] The loading mechanism 1 is movably connected to the truss 44 and is used to move the fuel rods 92 in the rod box to the pre-positioning station.

[0082] The pre-positioning mechanism 2 is arranged at the pre-positioning station and is used to position the fuel rod 92 axially and circumferentially so that the through groove on the end plug of the fuel rod 92 corresponds to the plug-in portion of the grid plate 911 of the grid plate structure 91.

[0083] The rod bundle assembly mechanism 4 is movably connected to the truss 44, and is used to move the fuel rods 92 positioned on the pre-positioning mechanism 2 to the grid plate 911 of the grid plate structure 91, so that the fuel rods 92 and the grid plate 911 are plugged into each other through the through grooves and the plug-in parts, and the multiple fuel rods 92 plugged into the grid plate 911 form a rod bundle structure.

[0084] The assembly assembly mechanism 6 is arranged on the assembly station, and includes a support frame 61, an outer sleeve fixing mechanism 62 and an operating head fixing mechanism 63. The grid plate structure 91 is fixed on the support frame 61, and the outer sleeve fixing mechanism 62 is slidably arranged on the support frame 61 to fix the outer sleeve 93 of the MOX assembly 9. The operating head fixing mechanism 63 is slidably arranged on the support frame 61 to fix the operating head 94 of the MOX assembly 9. The grid plate structure 91, the outer sleeve 93 and the operating head 94 are spaced and coaxially arranged along the axial direction of the fuel rod 92. The operating head fixing mechanism 63 can move relative to the support frame 61 toward the outer sleeve 93 so that the operating head 94 is plugged and connected to the outer sleeve 93. The outer sleeve fixing mechanism 62 can move relative to the support frame 61 toward the grid plate 911 so that the outer sleeve 93 with the operating head 94 is sleeved on the rod bundle structure to form a MOX assembly.

[0085] The flipping mechanism 7 is connected to the support frame 61 and is used to drive the support frame 61 to flip so that the MOX assembly is in a vertical state.

[0086] The welding mechanism 8 is disposed on one side of the work frame 5 and is used to weld and fix the two ends of the outer sleeve 93 in the vertical MOX assembly to the operating head 94 and the grid structure 91 respectively.

[0087] The present invention designs the above-mentioned new integrated assembly device for MOX components. The feeding mechanism 1 moves the fuel rods in the rod box to the pre-positioning mechanism 2. The pre-positioning mechanism 2 performs axial and circumferential positioning on the fuel rods so that the through grooves on the end plugs of the fuel rods correspond to the plug-in parts of the grid plates on the working frame 5. The rod bundle assembly mechanism 4 moves the fuel rods that have been positioned on the pre-positioning mechanism 2 to the grid plates so that the fuel rods and the grid plates are plugged in through the through grooves and the plug-in parts. The multiple fuel rods plugged in the grid plates form a rod bundle structure. The operating head fixing mechanism 63 drives the operating head to move toward the outer sleeve until it is plugged in and connected with the outer sleeve. The outer sleeve fixing mechanism 62 drives the outer sleeve with the operating head to move toward the grid plates so that it is sleeved on the rod bundle structure to form a MOX component. The flipping mechanism 7 drives the MOX component to flip to a vertical state. The welding mechanism 8 welds and fixes the two ends of the outer sleeve in the vertical MOX component to the operating head and the grid plate structure respectively. This enables full automation of the entire process from fuel rods to component manufacturing, reduces radioactive hazards to personnel, and improves the automation level and efficiency of MOX component assembly.

[0088] In this embodiment, Figure 2 As shown, the pre-positioning mechanism 2 includes a support seat 21, a clamping rotation mechanism 22, an end plug posture adjustment mechanism 23 and a linear slide 24.

[0089] The support seat 21, the end plug posture adjustment mechanism 23 and the linear slide 24 are all arranged on the work frame 5. The support seat 21 has a groove for supporting the fuel rod 92. The clamping rotation mechanism 22 and the end plug posture adjustment mechanism 23 are arranged on both sides of the support seat 21 along the axial direction of the fuel rod 92.

[0090] The clamping and rotating mechanism 22 is arranged on a linear slide 24, and the linear slide 24 can drive the clamping and rotating mechanism 22 to move linearly relative to the work frame 5, so that the fuel rod 92 abuts between the clamping and rotating mechanism 22 and the end plug posture adjustment mechanism 23, and the end surface position where the end plug posture adjustment mechanism 23 abuts against the fuel rod 92 corresponds to the axial positioning position of the end plug of the fuel rod 92.

[0091] The end plug posture adjustment mechanism 23 is used to detect and locate the circumferential state of the fuel rod 92, and the clamping rotation mechanism 22 is used to drive the fuel rod 92 to rotate so that the fuel rod 92 is turned to its circumferential positioning position.

[0092] Specifically, there are multiple support seats 21, which are arranged at intervals along the axial direction of the fuel rod, and this arrangement facilitates the subsequent assembly mechanism 4 to grab the positioned fuel rod between two adjacent support seats 21. Two regular hexagonal wedges form the support seat 21, and the two regular hexagonal wedges enclose a V-shaped groove for supporting the fuel rod 92.

[0093] like Figure 3 As shown, in this embodiment, the clamping rotation mechanism 22 includes a pneumatic clamp 221 and a servo rotation mechanism 222.

[0094] The pneumatic clamp 221 clamps the corresponding end of the fuel rod 92 after the fuel rod 92 abuts against it. The servo rotation mechanism 222 is arranged on the linear slide 24 and is transmission-connected with the pneumatic clamp 221 for driving the pneumatic clamp 221 to rotate, thereby driving the fuel rod 92 to rotate.

[0095] like Figure 4 As shown, in this embodiment, the end plug posture adjustment mechanism 23 includes a pushing mechanism 234 and a shooting switch 237, and the pushing mechanism 234 and the shooting switch 237 are both arranged on the working frame 5.

[0096] The pushing mechanism 234 is used to abut against the fuel rod 92. The end surface position where the pushing mechanism abuts against the fuel rod 92 corresponds to the axial positioning position of the end plug of the fuel rod 92.

[0097] The through-slot switch 237 corresponds to the position of the through-slot of the end plug of the fuel rod 92, and its light emitting component and receiving component are arranged on both sides of the radial direction of the fuel rod 92. The through-slot switch 237 is turned on when the through-slot is arranged horizontally or vertically, and transmits a signal to the industrial computer. The industrial computer controls the clamping rotating mechanism 22 to rotate 90° or stop rotating according to the signal of the through-slot switch 237 being turned on.

[0098] In this embodiment, the end plug posture adjustment mechanism 23 also includes a wire winding identification device 232, which is arranged on the workbench 5 and corresponds to the starting position of the wire winding on the fuel rod 92. When the fuel rod 92 rotates to its circumferential positioning position, it is used to detect the distance between the bottom of the fuel rod 92 and the wire winding identification device 232 to determine the direction of the starting point of the wire winding on the fuel rod 92, and transmit a signal to the industrial computer. The industrial computer controls the clamping rotating mechanism 22 to rotate 180° or stop rotating according to the direction signal of the starting point of the wire winding on the fuel rod 92.

[0099] In this embodiment, the end plug posture adjustment mechanism 23 also includes a hole calibration structure, which includes a lifting drive mechanism 235 and a conical needle 236. The conical needle 236 matches the through hole at the end of the end plug through slot of the fuel rod 92 and is transmission-connected to the lifting drive mechanism 235. The lifting drive mechanism 235 is arranged on the working frame 5, and is used to drive the conical needle 236 to lift and insert into the vertically arranged through slot to keep the fuel rod 92 in its circumferential positioning position.

[0100] In this embodiment, the end plug posture adjustment mechanism 23 further includes a rotation limiting clamp 231, which is disposed on the work frame 5 and is used to circumferentially limit the fuel rod 92 during its rotation to prevent the fuel rod 92 from swinging its tail.

[0101] In addition, the end plug posture adjustment mechanism 23 also includes a code scanning device 233 for identifying the barcode of the fuel rod end plug and sending it to the industrial computer.

[0102] In this embodiment, the light emitting component and the receiving component of the beam switch 237 are arranged horizontally, so the beam switch 237 is turned on when the through slot is arranged horizontally. The process of the end plug posture adjustment mechanism 23 adjusting the end plug posture of the fuel rod is as follows:

[0103] The loading mechanism 1 moves the fuel rods 92 in the rod box to a plurality of support seats 21, which are supported by the V-shaped grooves of the plurality of support seats 21. The pushing mechanism 234 is actuated and moves to its working position, and its working position refers to the end face position abutting against the fuel rod 92 corresponding to the axial positioning position of the end plug of the fuel rod 92. The linear slide 24 drives the clamping and rotating mechanism 22 to move linearly relative to the work frame 5, so that the fuel rod 92 abuts between the clamping and rotating mechanism 22 and the pushing mechanism 234, and then the rotating limit clamp 231 is actuated to circumferentially limit the fuel rod 92, but does not limit its circumferential rotation function, so as to prevent the fuel rod 92 from swinging out during rotation.

[0104] The clamping and rotating mechanism 22 drives the fuel rod 92 to rotate until the through slot on the end plug is arranged horizontally, the beam switch 237 is turned on and transmits a signal to the industrial computer. The industrial computer controls the clamping and rotating mechanism 22 to rotate another 90° according to the signal of the beam switch 237. At the same time, during the rotation of the fuel rod 92, the barcode scanning device 233 recognizes the barcode of the fuel rod end plug and sends it to the industrial computer.

[0105] The wire winding identification device 232 is turned on to detect the distance between the bottom of the fuel rod 92 and the wire winding identification device 232 to determine the direction of the starting point of the wire winding on the fuel rod 92. Since the wire winding has a certain thickness, the above distance measured when the starting point of the wire winding faces downward is shorter than the above distance measured when the starting point of the wire winding faces upward. The wire winding identification device 232 determines whether the starting point of the wire winding faces upward or downward based on the above distance, and transmits a signal to the industrial computer. In this embodiment, it is required that the starting point of the wire winding of all fuel rods plugged into the grid plate faces upward. If the wire winding identification device 232 detects that the starting point of the wire winding of the fuel rod faces downward, the industrial computer controls the clamping rotation mechanism 22 to rotate 180° so that the starting point of the wire winding of the fuel rod faces upward.

[0106] The hole calibration structure is actuated, that is, the lifting drive mechanism 235 drives the tapered needle 236 to rise and be inserted into the vertically arranged through slot, so that the fuel rod 92 is maintained at its circumferential positioning position.

[0107] like Figure 5 As shown, in this embodiment, the feeding mechanism 1 includes a hooking mechanism 11, a first lifting mechanism 12 and a first translation mechanism 13.

[0108] The hooking mechanism 11 is connected to the first lifting mechanism 12 and is used to hook the fuel rods 92 in the rod box and drop the fuel rods 92 onto the pre-positioning mechanism 2.

[0109] The first lifting mechanism 12 is movably connected to the first translation mechanism 13, and can move up and down relative to the first translation mechanism 13 to drive the hooking mechanism 11 to approach or move away from the rod box / pre-positioning mechanism 2.

[0110] The first translation mechanism 13 is movably connected to the truss 44 , and can move horizontally relative to the truss 44 to drive the hooking mechanism 11 and the first lifting mechanism 12 to translate between the rod box and the pre-positioning mechanism 2 .

[0111] In this embodiment, the hooking mechanism 11 includes a hook 111 and a swinging drive mechanism 112. The swinging drive mechanism 112 is arranged on the first lifting mechanism 12 and is transmission-connected with the hook 111, and is used to drive the hook 111 to swing, so that the hook 111 hooks the fuel rod 92 in the rod box and drops the fuel rod 92 onto the pre-positioning mechanism 2.

[0112] In this embodiment, the first lifting mechanism 12 includes a first servo motor 122, a gear rack pair 123 and a first guide rail slider 121. The first servo motor 122 is arranged on the translation mechanism 13 and is connected to the gear transmission of the gear rack pair 123. The first guide rail slider 121 is arranged on the rack of the gear rack pair 123. The swing drive mechanism 112 is connected to the first guide rail slider 121. The first servo motor 122 is used to drive the gear to rotate to drive the rack to rise and fall, thereby driving the first guide rail slider 121 and the hooking mechanism 11 to rise and fall.

[0113] In this embodiment, the first translation mechanism 13 includes a second servo motor 133, a screw nut pair 131 and a tray 132. The second servo motor 133 is arranged on the truss and is connected to the screw transmission of the screw nut pair 131. The tray 132 is arranged on the nut of the screw nut pair 131. The second driving mechanism 122 is connected to the nut. The second servo motor 133 is used to drive the screw to rotate to drive the nut to move on the screw rod, thereby driving the hooking mechanism 11 and the lifting mechanism 12 to translate between the rod box and the pre-positioning mechanism 2.

[0114] like Figure 6 As shown, in this embodiment, the device further includes a material preparation mechanism 3, which is arranged on the work frame 5 and is used to automatically transport the rod box containing the fuel rods 92 to the material preparation station. The material preparation mechanism 3 includes a roller conveyor mechanism 31, a rod box transfer mechanism 32 and a shielding body 33. The roller conveyor mechanism 31 transports the rod box along the axial direction of the fuel rod to a position corresponding to the material preparation station, and the rod box transfer mechanism 32 transfers the rod box to the material preparation station by lifting and translating. The shielding body 33 is arranged on the work frame 5 to perform radiation shielding on the roller conveyor mechanism 31 and the rod box transfer mechanism 32.

[0115] like Figure 7 As shown, in this embodiment, the rod bundle assembly mechanism 4 includes a clamping claw assembly 41, a second lifting mechanism 42 and a second translation mechanism 43.

[0116] The clamp assembly 41 is disposed on the second lifting mechanism 42 and is used to grab the fuel rod 92 that has been positioned on the pre-positioning mechanism 2, or to release the fuel rod 92 after the fuel rod 92 is plugged into the grid plate 911.

[0117] The second translation mechanism 43 is movably connected to the truss 44 and can move horizontally relative to the truss 44 to drive the clamping jaw assembly and the second lifting mechanism 42 to translate between the pre-positioning mechanism 2 and the grid plate 911.

[0118] The second lifting mechanism 42 is movably connected to the second translation mechanism 43 and can be lifted and lowered relative to the second translation mechanism 43 to drive the clamping jaw assembly 41 and the fuel rod 92 to move toward the grid plate 911 so that the fuel rod 92 and the grid plate 911 are plugged through the through groove and the plug-in portion.

[0119] like Figure 8 As shown, the clamp assembly 41 includes a clamp plate 415 arranged along the axial direction of the fuel rod, and a rigid clamp 411, an auxiliary clamp 412 and three limit clamps 413 arranged on the clamp plate 415. The rigid clamp 411 is provided with a contoured clamp 414 to ensure the clamping of the fuel rod to achieve the maintenance of the lower end plug position.

[0120] like Fig. 9 As shown, the second lifting mechanism 42 is driven by a screw motor 421 to drive the guide rail 422 to rise and fall, and the second guide rail slider 423 is fixed at the end of the second translation mechanism 43, as shown in FIG. Fig.10 As shown, the second translation mechanism 43 has a similar driving structure to the second lifting mechanism 42, and is provided with a grating scale 431 to ensure the positioning accuracy of the fuel rod when it is moved from the pre-positioning mechanism 2 to its insertion position. The second translation mechanism 43 is fixed as a whole on the truss 44, which is a gantry-type rigid structure to ensure the smoothness and movement accuracy of the assembly mechanism 4.

[0121] like Fig.11 As shown, in this embodiment, the rod bundle assembly mechanism 4 also includes a visually assisted positioning system 45, and the visually assisted positioning system 45 includes a mounting frame 453, a telescopic mechanism 452 and a camera 451. The mounting frame 453 is arranged on one side of the working frame 5, and the telescopic mechanism 452 is arranged between the mounting frame 453 and the camera 451, which can be telescoped relative to the mounting frame to drive the camera 451 to approach or move away from the grid plate 911. The camera 451 recognizes and verifies the posture of the grid plate 911 and the lower end plug of the fuel rod, and photographs the plugging process of the fuel rod 912 and the grid plate 911 after the verification is qualified.

[0122] like Fig.12 As shown, in this embodiment, the grid structure 91 is fixed to the support frame 61 by a fixing mechanism 65, and the fixing mechanism 65 includes a contoured clamping claw 651, a clamping cylinder 652 and a limit device 653.

[0123] The grid plate structure 91 includes a grid plate 911 and a lower transition component 912. The grid plate 911 is vertically welded to the end surface of one end of the lower transition component 912.

[0124] The profiling clamping jaw 651 is connected to the clamping cylinder 652 by transmission. The clamping cylinder 652 is arranged on the support frame 61 and is used to drive the profiling clamping jaw 651 to open or close so as to clamp or loosen one end of the lower transition component 912 connected to the grid plate 911.

[0125] The limiting device 653 is disposed on the support frame 61 , and is used to abut against one end of the lower transition component 912 away from the grid plate 911 , so as to achieve axial fixation of the lower transition component 912 .

[0126] like Fig.13As shown, in this embodiment, the component assembly mechanism 6 also includes a bunching mechanism 64, which is arranged on the working frame 5 and is located below the support frame 61. The bunching mechanism 64 can rise relative to the working frame 5 to extend from the support frame 61 to support the rod bundle structure inserted on the grid plate 911 so that the rod bundle structure remains in a horizontal state.

[0127] When sensing that the outer sleeve fixing mechanism 62 is pushing the outer sleeve 93 to approach, the clustering mechanism 64 descends to avoid interfering with the movement of the outer sleeve 93.

[0128] In this embodiment, a plurality of grid plates 911 are provided, and the plurality of grid plates 911 are arranged at intervals in a horizontal direction perpendicular to the axial direction of the fuel rods to form a grid plate assembly with a hexagonal cross section. The two acute angles of the hexagon are arranged vertically. A plurality of fuel rods 92 are arranged vertically at intervals on each grid plate 911. The fuel rods 92 on the grid plate assembly form a rod bundle structure, so that the rod bundle structure is a horizontally arranged hexahedral structure.

[0129] The clustering mechanism 64 includes a mounting frame 641, a profiling support block 642 and two support members 643. The mounting frame 641 is movably connected to the working frame 5 and can be lifted and lowered relative to the working frame 5. The profiling support block 642 is arranged on the mounting frame 641 and has profiling grooves that match the four surfaces of the lower part of the rod bundle structure. The two support members 643 are rotatably connected to the mounting frame 641 and are arranged on both sides of the profiling support block 642. The support members 643 can rotate toward or away from the rod bundle structure relative to the mounting frame 641 to abut or disengage with the corresponding surface of the upper part of the rod bundle structure. The rod bundle structure is shaped by the two support members 643 after all fuel rods are assembled to ensure that the rod bundle structure is smoothly loaded into the outer sleeve 93.

[0130] like Fig.14 As shown, in this embodiment, the outer sleeve fixing mechanism 62 includes a propulsion mechanism 621, a bottom plate 622 and a plurality of clamping mechanisms 623. The plurality of clamping mechanisms 623 are arranged at intervals along the axial direction of the outer sleeve 93. The clamping mechanisms 623 are fixed on the bottom plate 622 and are used to clamp or loosen the outer sleeve 93.

[0131] The bottom plate 622 is slidably mounted on the support frame 61 , and the propulsion mechanism 621 is fixed on the support frame 61 and is transmission-connected to the bottom plate 622 , so as to drive the bottom plate 622 to move axially along the outer sleeve 93 , so as to drive the outer sleeve 93 with the operating head 94 to move to be mounted on the rod bundle structure.

[0132] Specifically, the clamping mechanism 623 includes a profiling tool 6231 and a clamping tool 6232. The profiling tool 6231 is fixed on the bottom plate 622 and has a profiling groove that matches the lower part of the outer sleeve, which is used to support the outer sleeve and limit the outer sleeve circumferentially. The clamping tool 6232 is rotatably connected to the profiling tool 6231 and can rotate relative to the profiling tool 6231. The profiling tool and the clamping tool cooperate to form a regular hexagonal clamping section to achieve the clamping and fixing of the outer sleeve.

[0133] like Fig.15 As shown, in this embodiment, the operating head fixing mechanism 63 includes a pushing mechanism 631, a slide plate 632 and a clamping mechanism 633. The clamping mechanism 633 is fixed on the slide plate 632 and is used to clamp or release the operating head 94.

[0134] The slide plate 632 is slidably mounted on the support frame 61 . The pushing mechanism 631 is fixed on the support frame 61 and is transmission-connected with the slide plate 632 , so as to drive the slide plate 632 to move axially along the outer sleeve 93 , so as to drive the operating head 94 to be plugged and connected with the outer sleeve 93 .

[0135] like Fig.16 As shown, in this embodiment, the flip mechanism 7 includes a flip driving mechanism 71, a limit mechanism 72 and a base 73.

[0136] The flip driving mechanism 71 is arranged on the base 73 and is connected to the support frame 61. It is provided with a dual motor synchronous drive to drive the support frame 61 to flip so that the MOX assembly on the support frame 61 is in a vertical state.

[0137] The limiting mechanism 72 is disposed on the base 73 and is used to limit the MOX assembly after the support frame 61 is turned over so as to keep it in a vertical state.

[0138] like Fig.17 As shown, in this embodiment, the welding mechanism 8 includes an operating machine 81, a telescopic mechanism 82 and a welding head 83. The telescopic mechanism 82 is vertically slidably arranged on the operating machine 81, and the welding head 83 is arranged on the telescopic mechanism 82. The telescopic mechanism 82 is used to drive the welding head 83 to telescope to approach or move away from the MOX component. The welding head 83 can complete the weld positioning operation under the drive thereof. The welding head 83 is positioned by lifting and lowering and rotating to complete the hexagonal annular seam welding. It is a multi-welding gun joint form. Arcing is started simultaneously during welding to effectively reduce welding deformation.

[0139] In summary, the integrated assembly device for MOX components of the present embodiment can realize the full process automation operation from fuel rod to component manufacturing, including automatic transportation of rod boxes, automatic transplanting, automatic material collection and preparation of fuel rods, adjustment of the posture of the lower end plug, automatic assembly with the grid plate, automatic assembly of the outer sleeve and the rod bundle, automatic assembly of the operating head and the outer sleeve, automatic assembly of the lower end component and the outer sleeve, automatic flipping, automatic positioning of the welding gun, and automatic welding, thereby improving the automation level and efficiency of component assembly.

[0140] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A MOX component integrated assembly device, characterized in that: include: A working frame (5), a truss (44), a feeding mechanism (1), a pre-positioning mechanism (2), a rod bundle assembly mechanism (4), a component assembly mechanism (6), a turning mechanism (7) and a welding mechanism (8), The work frame (5) is provided with a material preparation station, a pre-positioning station and an assembly station, wherein the material preparation station, the pre-positioning station and the assembly station are arranged in sequence along a direction perpendicular to the axial direction of the fuel rod (92), and the truss (44) is arranged between the material preparation station and the pre-positioning station. A rod box containing fuel rods (92) is arranged on the material preparation station, and a grid plate structure (91) of the MOX assembly (9) is fixed on the assembly station. The loading mechanism (1) is movably connected to the truss (44) and is used to move the fuel rods (92) in the rod box to the pre-positioning station. The pre-positioning mechanism (2) is arranged on the pre-positioning station and is used to position the fuel rod (92) axially and circumferentially so that the through groove on the end plug of the fuel rod (92) corresponds to the plug-in portion of the grid plate (911) of the grid plate structure (91). The rod bundle assembly mechanism (4) is movably connected to the truss (44) and is used to move the fuel rods (92) that have been positioned on the pre-positioning mechanism (2) to the grid plate (911) of the grid plate structure (91), so that the fuel rods (92) and the grid plate (911) are plugged into each other through the through grooves and the plug-in parts, and the plurality of fuel rods (92) plugged into the grid plate (911) form a rod bundle structure. The assembly assembly mechanism (6) is arranged on the assembly station, and comprises a support frame (61), an outer sleeve fixing mechanism (62) and an operating head fixing mechanism (63); a grid plate structure (91) is fixed on the support frame (61); the outer sleeve fixing mechanism (62) is slidably arranged on the support frame (61) and used to fix the outer sleeve (93) of the MOX assembly (9); the operating head fixing mechanism (63) is slidably arranged on the support frame (61) and used to fix the operating head (94) of the MOX assembly (9); The structure (91), the outer sleeve (93) and the operating head (94) are spaced apart and coaxially arranged along the axial direction of the fuel rod (92); the operating head fixing mechanism (63) can move relative to the support frame (61) toward the outer sleeve (93) so that the operating head (94) and the outer sleeve (93) are plugged and connected; the outer sleeve fixing mechanism (62) can move relative to the support frame (61) toward the grid plate (911) so that the outer sleeve (93) with the operating head (94) is sleeved on the rod bundle structure to form an MOX assembly. The flipping mechanism (7) is connected to the support frame (61) in a transmission manner and is used to drive the support frame (61) to flip so that the MOX assembly is in a vertical state. The welding mechanism (8) is arranged on one side of the working frame (5) and is used to weld and fix the two ends of the outer sleeve (93) in the vertical MOX assembly to the operating head (94) and the grid structure (91) respectively.

2. The MOX component integrated assembly device according to claim 1, characterized in that: The pre-positioning mechanism (2) comprises a support seat (21), a clamping rotation mechanism (22), an end plug position adjustment mechanism (23) and a linear slide (24). The support seat (21), the end plug posture adjustment mechanism (23) and the linear slide (24) are all arranged on the work frame (5); the support seat (21) has a groove for supporting the fuel rod (92); the clamping rotation mechanism (22) and the end plug posture adjustment mechanism (23) are arranged on both sides of the support seat (21) along the axial direction of the fuel rod (92); The clamping rotating mechanism (22) is arranged on a linear slide (24), and the linear slide (24) can drive the clamping rotating mechanism (22) to move linearly relative to the working frame (5), so that the fuel rod (92) abuts between the clamping rotating mechanism (22) and the end plug posture adjustment mechanism (23), and the end surface position where the end plug posture adjustment mechanism (23) abuts against the fuel rod (92) corresponds to the axial positioning position of the end plug of the fuel rod (92). The end plug posture adjustment mechanism (23) is used to detect and locate the circumferential state of the fuel rod (92), and the clamping rotation mechanism (22) is used to drive the fuel rod (92) to rotate so that the fuel rod (92) is rotated to its circumferential positioning position.

3. The MOX component integrated assembly device according to claim 2, characterized in that: The clamping and rotating mechanism (22) comprises a pneumatic clamp (221) and a servo rotating mechanism (222). The pneumatic clamp (221) clamps the corresponding end of the fuel rod (92) after the fuel rod (92) abuts against it. The servo rotation mechanism (222) is arranged on the linear slide (24) and is transmission-connected with the pneumatic clamp (221) for driving the pneumatic clamp (221) to rotate, thereby driving the fuel rod (92) to rotate.

4. The MOX component integrated assembly device according to claim 3, characterized in that: The end plug position adjustment mechanism (23) comprises a pushing mechanism (234) and a beam switch (237), and the pushing mechanism (234) and the beam switch (237) are both arranged on the working frame (5). The pushing mechanism (234) is used to abut against the fuel rod (92), and the end surface position where the pushing mechanism abuts against the fuel rod (92) corresponds to the axial positioning position of the end plug of the fuel rod (92). The beam switch (237) corresponds to the position of the through slot of the end plug of the fuel rod (92), and its light emitting component and receiving component are arranged on both sides of the radial direction of the fuel rod (92). The beam switch (237) is turned on when the through slot is arranged horizontally or vertically, and transmits a signal to the industrial computer. The industrial computer controls the clamping rotating mechanism (22) to rotate 90 degrees or stop rotating according to the signal of the beam switch (237).

5. The MOX component integrated assembly device according to claim 4, characterized in that: The end plug posture adjustment mechanism (23) further comprises a wire winding identification device (232), which is arranged on the work frame (5) and corresponds to the starting position of the wire winding on the fuel rod (92). The wire winding identification device (232) is used to detect the distance between the bottom of the fuel rod (92) and the wire winding identification device (232) when the fuel rod (92) rotates to its circumferential positioning position, so as to determine the direction of the starting point of the wire winding on the fuel rod (92) and transmit a signal to the industrial control computer. The industrial control computer controls the clamping rotation mechanism (22) to rotate 180 degrees or stop rotating according to the direction signal of the starting point of the wire winding on the fuel rod (92).

6. The MOX component integrated assembly device according to claim 5, characterized in that: The end plug posture adjustment mechanism (23) also includes a hole calibration structure, which includes a lifting drive mechanism (235) and a tapered needle (236). The tapered needle (236) matches the through hole at the end of the end plug through slot of the fuel rod (92) and is transmission-connected to the lifting drive mechanism (235). The lifting drive mechanism (235) is arranged on the working frame (5) and is used to drive the tapered needle (236) to lift and insert into the vertically arranged through slot, so that the fuel rod (92) is maintained at its circumferential positioning position.

7. The MOX component integrated assembly device according to claim 6, characterized in that: The end plug posture adjustment mechanism (23) also includes a rotation limiting clamp (231), which is arranged on the working frame (5) and is used to limit the circumferential position of the fuel rod (92) during its rotation to prevent the fuel rod (92) from swinging off.

8. The MOX module integrated assembly device according to any one of claims 1 to 7, characterized in that: The feeding mechanism (1) comprises a hooking mechanism (11), a first lifting mechanism (12) and a first translation mechanism (13). The hooking mechanism (11) is connected to the first lifting mechanism (12) and is used to hook the fuel rods (92) in the rod box and drop the fuel rods (92) onto the pre-positioning mechanism (2). The first lifting mechanism (12) is movably connected to the first translation mechanism (13) and can move up and down relative to the first translation mechanism (13) to drive the hooking mechanism (11) to approach or move away from the rod box / pre-positioning mechanism (2). The first translation mechanism (13) is movably connected to the truss (44) and can move horizontally relative to the truss (44) to drive the hooking mechanism (11) and the first lifting mechanism (12) to translate between the rod box and the pre-positioning mechanism (2).

9. The MOX component integrated assembly device according to claim 8, characterized in that: The hooking mechanism (11) comprises a hook claw (111) and a swing driving mechanism (112). The swing driving mechanism (112) is arranged on the first lifting mechanism (12) and is transmission-connected with the hook claw (111) for driving the hook claw (111) to swing so that the hook claw (111) hooks the fuel rod (92) in the rod box and drops the fuel rod (92) onto the pre-positioning mechanism (2).

10. The MOX component integrated assembly device according to any one of claims 1 to 7, characterized in that: The rod bundle assembly mechanism (4) comprises a clamping claw assembly (41), a second lifting mechanism (42) and a second translation mechanism (43). The clamping claw assembly (41) is arranged on the second lifting mechanism (42) and is used to grab the fuel rod (92) that has been positioned on the pre-positioning mechanism (2), or to release the fuel rod (92) after the fuel rod (92) is plugged into the grid plate (911). The second translation mechanism (43) is movably connected to the truss (44) and can move horizontally relative to the truss (44) to drive the clamping jaw assembly and the second lifting mechanism (42) to translate between the pre-positioning mechanism (2) and the grid plate (911). The second lifting mechanism (42) is movably connected to the second translation mechanism (43) and can be lifted and lowered relative to the second translation mechanism (43) to drive the clamping jaw assembly (41) and the fuel rod (92) to move toward the grid plate (911), so that the fuel rod (92) and the grid plate (911) are plugged through the through groove and the plug-in portion.

11. The MOX module integrated assembly device according to any one of claims 1 to 7, characterized in that: The component assembly mechanism (6) further comprises a clustering mechanism (64), The clustering mechanism (64) is arranged on the working frame (5) and is located below the supporting frame (61). It can rise relative to the working frame (5) to extend out of the supporting frame (61) to support the rod cluster structure inserted on the grid plate (911) so that the rod cluster structure remains in a horizontal state.

12. The MOX module integrated assembly device according to claim 11, characterized in that: The rod bundle structure is a horizontally arranged hexahedral structure. The clustering mechanism (64) comprises a mounting frame (641), a contour support block (642) and two support members (643); the mounting frame (641) is movably connected to the working frame (5) and can be lifted and lowered relative to the working frame (5); the contour support block (642) is arranged on the mounting frame (641) and has contour grooves that match the four surfaces of the lower part of the rod bundle structure; the two support members (643) are rotatably connected to the mounting frame (641) and are arranged on both sides of the contour support block (642); the support members (643) can be rotated relative to the mounting frame (641) toward or away from the rod bundle structure to abut or disengage from the surface corresponding to the upper part of the rod bundle structure.

13. The MOX module integrated assembly device according to any one of claims 1 to 7, characterized in that: The outer sleeve fixing mechanism (62) comprises a propulsion mechanism (621), a base plate (622) and a plurality of clamping mechanisms (623). The plurality of clamping mechanisms (623) are arranged at intervals along the axial direction of the outer sleeve (93). The clamping mechanisms (623) are fixed on the base plate (622) and are used to clamp or loosen the outer sleeve (93). The base plate (622) is slidably mounted on the support frame (61); the propulsion mechanism (621) is fixed on the support frame (61) and is transmission-connected to the base plate (622) for driving the base plate (622) to move axially along the outer sleeve (93) so as to drive the outer sleeve (93) with the operating head (94) to move to be sleeved on the rod bundle structure.

14. The MOX module integrated assembly device according to any one of claims 1 to 7, characterized in that: The turning mechanism (7) comprises a turning driving mechanism (71), a limiting mechanism (72) and a base (73). The flip driving mechanism (71) is arranged on the base (73) and is connected to the support frame (61) in a transmission manner, and is used to drive the support frame (61) to flip so that the MOX assembly on the support frame (61) is in a vertical state. The limiting mechanism (72) is arranged on the base (73) and is used to limit the position of the MOX component after the support frame (61) is turned over so as to keep it in a vertical state.

15. The MOX module integrated assembly device according to any one of claims 1 to 7, characterized in that: The welding mechanism (8) comprises an operating machine (81), a telescopic mechanism (82) and a welding head (83); the telescopic mechanism (82) is vertically slidably arranged on the operating machine (81); the welding head (83) is arranged on the telescopic mechanism (82); the telescopic mechanism (82) is used to drive the welding head (83) to telescope so as to approach or move away from the MOX assembly.

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