Pick-up device

Abstract

The utility model discloses a pickup device which is used for picking up a broken pin in a nuclear power station, the broken pin is located in a pin hole of a reactor core plate, and the pickup device comprises a base and a first collecting assembly. The base is suitable for being connected with the reactor core plate. The first collecting assembly comprises a first shell and a first cover which are connected with each other, and the first shell and the first cover jointly form a first containing cavity. The first collecting assembly comprises a first opening communicated with the first containing cavity, the first opening is formed in the bottom of the first collecting assembly, and the first shell is connected with the base. The first collecting assembly is configured to have a first state and a second state. In the first state, the first opening is exposed and is communicated with the pin hole. In the second state, the first opening is at least partially closed. The first cover body can move in the direction close to the first shell so that the first collecting assembly can be switched from the first state to the second state. The broken pin collecting operation of the picking device is convenient and fast, and the operation safety can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear power equipment, in particular to a picking device. Background Art

[0002] The operating power of the core of a pressurized water reactor nuclear power plant is regulated by the control rod assembly. The upper internal components of a pressurized water reactor nuclear power plant include guide cylinders, which can provide guidance for the control rod assembly to be inserted and pulled up and down in the core fuel assembly.

[0003] In the prior art, a cotter pin is used to connect the guide tube and the core plate. The cotter pin is a flap-type structure, and the cotter pin is connected to the pin hole of the core plate by interference fit. The flap-type structure has radial elasticity and can shrink and expand slightly in the radial direction, so that the cotter pin can be smoothly inserted into or pulled out of the pin hole under a certain axial force. However, because the cotter pin is affected by the operating temperature, radiation, and fluid erosion in the reactor for a long time, the material properties will decrease and it is easy to break. Therefore, the broken cotter pin is easy to remain in the pin hole of the core plate, affecting the normal replacement of the guide tube. In the related art, a pin ejector assembly is used to eject the broken pin from the pin hole of the core plate, but because the space of the components in the reactor is small and the radiation is strong, it is inconvenient to collect the broken pin that has detached from the core plate. Utility Model Content

[0004] The main purpose of the utility model is to provide a picking device, aiming to solve the technical problem of inconvenient collection of broken pins.

[0005] To achieve the above purpose, the embodiment of the utility model provides a picking device for picking up a broken pin in a nuclear power plant, wherein the broken pin is located in a pin hole of a core plate, and the picking device comprises:

[0006] A base, adapted to connect the core plate;

[0007] A first collecting assembly, comprising a first shell and a first cover connected to each other, wherein the first shell and the first cover together form a first accommodating cavity, the first collecting assembly comprises a first opening communicating with the first accommodating cavity, the first opening is arranged at the bottom of the first collecting assembly, and the first shell is connected to the base;

[0008] Wherein, the first collecting component is configured to have a first state and a second state. In the first state, the first opening is exposed and connected to the pin hole, and in the second state, the first opening is at least partially closed; the first cover body can move in a direction close to the first shell body to switch the first collecting component from the first state to the second state.

[0009] In some embodiments, the first opening is provided on the first cover, the base is provided with a first slot, and from the first state to the second state, the first cover passes through the first slot, and the bottom wall of the first slot at least partially closes the first opening.

[0010] In some embodiments, the second collecting assembly includes a second shell and a second cover body connected to each other, the second shell and the second cover body together form a second accommodating cavity, the second collecting assembly includes a second opening communicating with the second accommodating cavity, the second opening is provided at the bottom of the second collecting assembly, and the second shell is connected to the base;

[0011] Wherein, the second collecting component is configured to have a third state and a fourth state. In the third state, the second opening is exposed and connected to the pin hole, and in the fourth state, the second opening is at least partially closed; the second cover body can move in a direction close to the second shell body to switch the second collecting component from the third state to the fourth state.

[0012] In some embodiments, the second opening is provided on the second cover body, the base is provided with a second groove body, and from the third state to the fourth state, the second cover body passes through the second groove body, and the groove bottom wall of the second groove body at least partially closes the second opening.

[0013] In some embodiments, the transmission assembly includes a gear and a first rack and a second rack meshing with the gear, the first rack and the second rack are arranged opposite to each other, the first rack is connected to the first cover body to drive the first cover body close to the first shell, and the second rack is connected to the second cover body to drive the second cover body close to the second shell.

[0014] In some embodiments, the picking device includes a connecting rod assembly, which includes an outer rod and an inner rod connected to each other, the outer rod is connected to the base, and the inner rod is connected to the gear to drive the first collecting assembly to switch between the first state and the second state.

[0015] In some embodiments, the first collecting assembly and the second collecting assembly are arranged relative to each other along a first direction, along the first direction, the first cover body is located on the side of the first shell body away from the base, and the second cover body is located on the side of the second shell body away from the base, and the first direction is perpendicular to the axial direction of the pin hole.

[0016] In some embodiments, the core plate is provided with a mounting hole, and the base includes a clamping portion, which passes through the mounting hole along a direction parallel to the axis of the pin hole, and the cross-sectional area of ​​the clamping portion along the first direction gradually decreases in a direction away from the core plate.

[0017] In some embodiments, the picking device also includes a lever, a paddle is provided at one end of the lever close to the first collecting component, the first collecting component also includes a first connecting hole connected to the first accommodating cavity, and the lever is suitable for passing through the first connecting hole so that the paddle abuts against the broken pin in the first accommodating cavity.

[0018] In some embodiments, the pick-up device further comprises a radiation resistant camera and a connecting rod assembly, wherein the connecting rod assembly comprises an outer rod connected to the base, and the radiation resistant camera is connected to the outer rod to identify the position of the pin hole.

[0019] Compared with the prior art, the beneficial effects of the utility model include:

[0020] In the technical scheme of the utility model, the picking device includes a base and a first collecting assembly. The base can be connected to the core plate to enable the picking device to be positioned. The first collecting assembly includes a first shell and a first cover body that are connected to each other. When the first collecting assembly is in the first state, the first opening at the bottom of the first collecting assembly is exposed and communicated with the pin hole of the core plate, that is, the pin pusher assembly can push the broken pin from the pin hole to the first opening and enter the first accommodating cavity for storage. When the first collecting assembly is in the second state, the first opening is at least partially closed, that is, it can prevent the broken pin from escaping from the first opening to the first accommodating cavity, and ensure the stability of the first collecting assembly to accommodate the broken pin. In addition, the first cover body can move in the direction close to the first shell body, so that the first collecting assembly switches from the first state to the second state, that is, the entire collection operation of the first collecting assembly is convenient and fast, and the collection efficiency of the broken pin can be improved. In addition, the picking device of this scheme can work in a narrow space at a single guide cylinder of the upper and middle internal components of the nuclear power plant, solve the problem of inaccessibility of personnel, reduce the radiation dose received by the relevant personnel in close-range operation, and ensure the safety of the broken pin collection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1It is a schematic diagram of the working state of the picking device in one embodiment of the utility model; wherein the component pool and the components in the pile are shown;

[0023] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0024] Figure 3 It is a structural schematic diagram of a picking device in one embodiment of the utility model;

[0025] Figure 4 It is a cross-sectional schematic diagram of a pickup device in an embodiment of the utility model, wherein a first opening and a second opening are shown;

[0026] Figure 5 It is an exploded schematic diagram of a picking device in one embodiment of the utility model;

[0027] Figure 6 is a schematic diagram of a base in an embodiment of the utility model;

[0028] Figure 7 It is a schematic diagram of a core plate in an embodiment of the utility model;

[0029] Figure 8 for Figure 7 A partial enlarged view of point B in the middle;

[0030] Fig. 9 It is a schematic diagram of the first collecting assembly in one embodiment of the utility model, wherein the shifting rod and the first connecting hole are shown.

[0031] Description of Figure Numbers:

[0032] Pick-up device 10;

[0033] Base 100; clamping portion 110; first inclined surface 111; first side edge 1111; second side edge 1112;

[0034] A first tank body 120; a second tank body 130;

[0035] First collecting assembly 200; first shell 210; first cover 220; first accommodating cavity 230; first opening 240; first connecting hole 250;

[0036] Second collection assembly 300; second shell 310; second cover 320; second accommodating cavity 330; second opening 340;

[0037] Transmission assembly 400; gear 410; first rack 420; second rack 430;

[0038] Connecting rod assembly 500; outer rod 510; inner rod 520;

[0039] Radiation-resistant camera 600;

[0040] A lever 700; a paddle 710;

[0041] Core plate 20; pin hole 201; broken pin 202; mounting hole 203;

[0042] Internal components 30; Storage rack 301;

[0043] Component pool 40;

[0044] The first direction X.

[0045] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] In the related art, a pin ejector assembly is used to eject the broken pins from the pin holes of the core plate. However, due to the small space and strong radiation of the components inside the reactor, it is inconvenient to collect the broken pins that have detached from the core plate.

[0048] In view of this, the embodiment of the present utility model proposes a picking device 10, which can improve the convenience of the collection operation of the broken pin 202. Specifically, the picking device 10 is used to pick up the broken pin 202 in the nuclear power plant. Figure 1 and Figure 2 It can be understood that the nuclear power plant has a component pool 40, and the in-core component 30 can be placed in the component pool 40. The storage rack 301 can fix and connect the in-core component 30. The in-core component 30 includes a core plate 20, and the picking device 10 can pick up the broken pin 202 located in the pin hole 201 of the core plate 20. Figures 1 to 9 The picking device 10 according to the embodiment of the present application is introduced. The picking device 10 includes a base 100 and a first collecting assembly 200 .

[0049] Reference Figure 2 , Figure 3 , Figure 6 and Figure 8 , the base 100 can be connected to the core plate 20. Specifically, the base 100 can be clamped with the core plate 20 to achieve the positioning operation between the picking device 10 and the core plate 20, so that the first collection assembly 200 can accurately collect the broken pins 202 located in the pin holes 201 of the core plate 20.

[0050] Reference Figures 1 to 5 , the specific configuration of the first collecting assembly 200 is introduced below. The first collecting assembly 200 includes a first shell 210 and a first cover body 220 that are connected to each other. The first shell 210 can be connected to the base 100. Specifically, the first shell 210 can be detachably connected to the base 100 to facilitate assembly, disassembly and replacement. Further, the first shell 210 can be bolted to the base 100. The first shell 210 can form a first accommodating cavity 230 together with the first cover body 220, and the first accommodating cavity 230 can accommodate the broken pin 202.

[0051] Reference Figure 5 The first collection assembly 200 includes a first opening 240 communicating with the first accommodating chamber 230, and the first opening 240 may be disposed at the bottom of the first collection assembly 200. That is, the first opening 240 allows the breaking pin 202 to enter the first accommodating chamber 230 through the pin hole 201 to achieve collection.

[0052] The working state of the first collection assembly 200 is described below. The first collection assembly 200 is configured to have a first state and a second state. When the first collection assembly 200 is in the first state, the broken pins 202 can be collected, that is, the first opening 240 can be exposed and connected to the pin hole 201 of the core plate 20, so that the broken pins 202 can enter the first accommodating cavity 230 through the first opening 240 to be collected. When the first collection assembly 200 is in the second state, its first opening 240 is at least partially closed, that is, it can prevent the broken pins 202 from escaping from the first accommodating cavity 230 through the first opening 240. The specific closing size of the first opening 240 can be determined according to actual conditions.

[0053] Reference Figures 3 to 5 The following describes the state switching process of the first collecting assembly 200. Specifically, the first cover 220 can move toward the direction close to the first shell 210, so that the first opening 240 can be closed by the base 100, that is, the first collecting assembly 200 can be switched from the first state to the second state.

[0054] In the technical solution of the utility model, the picking device 10 includes a base 100 and a first collection assembly 200. The base 100 can be connected to the core plate 20 to enable the picking device 10 to be positioned. The first collection assembly 200 includes a first shell 210 and a first cover 220 that are connected to each other. When the first collection assembly 200 is in the first state, the first opening 240 at the bottom of the first collection assembly 200 is exposed and communicated with the pin hole 201 of the core plate 20, that is, the pin pusher assembly can push the broken pin 202 from the pin hole 201 to the first opening 240 and enter the first accommodating chamber 230 for storage. When the first collection assembly 200 is in the second state, the first opening 240 is at least partially closed, that is, it can prevent the broken pin 202 from escaping from the first accommodating chamber 230 through the first opening 240, thereby ensuring the stability of the first collection assembly 200 in accommodating the broken pin 202. Furthermore, the first cover 220 can move toward the direction close to the first shell 210, so that the first collection assembly 200 is switched from the first state to the second state, that is, the entire collection operation of the first collection assembly 200 is convenient and fast, and the collection efficiency of the broken pins 202 can be guaranteed. In addition, the picking device 10 of the present solution can work in a small space at a single guide cylinder of the upper internal component 30 of the nuclear power plant, solving the problem of inaccessibility for personnel, reducing the radiation dose received by relevant personnel during close-range operation, and ensuring the safety of the collection operation of the broken pins 202.

[0055] Reference Figure 3 , Figure 5 and Figure 6 In some embodiments, the first opening 240 may be provided at the first cover 220. The base 100 may be provided with a first slot 120. When the first collecting assembly 200 is switched from the first state to the second state, the first cover 220 may be provided with the first slot 120, that is, the stability of the connection between the first cover 220 and the base 100 can be ensured. And the bottom wall of the slot of the first slot 120 at least partially closes the first opening 240, that is, the broken pin 202 can be prevented from escaping from the first accommodating cavity 230 through the first opening 240. In other embodiments, the first opening 240 may also be provided at the bottom of the first shell 210, and when the first cover 220 moves in a direction close to the first shell 210, the bottom of the first cover 220 may close the first opening 240. The specific setting position of the first opening 240 may be determined according to actual conditions.

[0056] Reference Figures 1 to 5In some embodiments, the picking device 10 is provided with a second collecting assembly 300, and the second collecting assembly 300 may have the same structure as the first collecting assembly 200. The specific configuration of the second collecting assembly 300 is described below. The second collecting assembly 300 includes a second shell 310 and a second cover 320 connected to each other. The second shell 310 may be connected to the base 100. Specifically, the second shell 310 may be detachably connected to the base 100 to facilitate assembly, disassembly and replacement. Further, the second shell 310 may be bolted to the base 100. The second shell 310 may form a second accommodating cavity 330 together with the second cover 320, and the second accommodating cavity 330 may accommodate the broken pin 202.

[0057] The second collecting assembly 300 includes a second opening 340 communicating with the second accommodating chamber 330 . The second opening 340 is disposed at the bottom of the second collecting assembly 300 , that is, the second opening 340 allows the breaking pin 202 to enter the second accommodating chamber 330 through the pin hole 201 to achieve collection.

[0058] The working state of the second collection assembly 300 is described below. The second collection assembly 300 is configured to have a third state and a fourth state. When the second collection assembly 300 is in the third state, the broken pins 202 can be collected, that is, the second opening 340 can be exposed and connected to the pin hole 201 of the core plate 20, so that the broken pins 202 can enter the second accommodating cavity 330 through the second opening 340 to be collected. When the second collection assembly 300 is in the fourth state, its second opening 340 is at least partially closed, that is, it can prevent the broken pins 202 from escaping from the second accommodating cavity 330 through the second opening 340. The specific closed size of the second opening 340 can be determined according to actual conditions.

[0059] Reference Figures 3 to 5 The following describes the state switching process of the second collecting assembly 300. Specifically, the second cover 320 can move toward the direction close to the second shell 310, so that the second opening 340 can be closed by the base 100, that is, the second collecting assembly 300 can be switched from the third state to the fourth state.

[0060] It should be noted that in some embodiments of the present application, two split pins are provided on a single guide cylinder to connect with the core plate 20. This solution can simultaneously collect two broken pins 202 at the position of a single guide cylinder by adding a second collection assembly 300, effectively improving the collection efficiency of the broken pins 202.

[0061] Reference Figure 3 , Figure 5 and Figure 6In some embodiments, the second opening 340 may be provided at the second cover 320. The base 100 may be provided with a second slot 130. When the second collecting assembly 300 is switched from the third state to the fourth state, the second cover 320 may be provided with the second slot 130, that is, the stability of the connection between the second cover 320 and the base 100 can be ensured. And the bottom wall of the second slot 130 at least partially closes the second opening 340, that is, the broken pin 202 can be prevented from escaping from the second accommodating cavity 330 through the second opening 340. In other embodiments, the second opening 340 may also be provided at the bottom of the second shell 310, and when the second cover 320 moves toward the direction close to the second shell 310, the bottom of the second cover 320 may close the second opening 340. The specific setting position of the second opening 340 may be determined according to actual conditions.

[0062] Reference Figures 3 to 5 , the relative arrangement positions of the first collecting assembly 200 and the second collecting assembly 300 are described below. For ease of description and understanding, a first direction X is defined, and the first direction X is perpendicular to the axial direction of the pin hole 201. Figure 5 The orientation in is an example, the axial direction of the pin hole 201 can point to the up and down direction, and the first direction X can point to the left and right direction. The first collecting component 200 and the second collecting component 300 are arranged relatively along the first direction X. Further, along the first direction X, the first cover body 220 can be located on the side of the first shell 210 away from the base 100, and the second cover body 320 can be located on the side of the second shell 310 away from the base 100. The above arrangement is adopted in this scheme to facilitate synchronous driving of the first cover body 220 and the second cover body 320, and to collect the broken pins of the two pin holes 201 at the same time, thereby improving the broken pin collection efficiency.

[0063] Reference Figures 3 to 5 In some embodiments, the picking device 10 is further provided with a transmission assembly 400. The transmission assembly 400 includes a gear 410, a first rack 420 and a second rack 430. The first rack 420 and the second rack 430 are both meshed with the gear 410. The first rack 420 and the second rack 430 are arranged facing each other so as to Figure 3 The orientation in is used as a reference, that is, the first rack 420 and the second rack 430 are arranged opposite to each other along the front-to-back direction. In this solution, the first rack 420 is connected to the first cover 220, that is, the first cover 220 can be driven by the gear 410 to be close to the first shell 210 to achieve the state switching of the first collection component 200, and the second rack 430 is connected to the second cover 320, that is, the second cover 320 can be driven by the gear 410 to be close to the second shell 310 to achieve the state switching of the second collection component 300. The transmission component 400 of this solution can further improve the collection efficiency of the broken pin 202.

[0064] Reference Figures 1 to 4In some embodiments, the picking device 10 is provided with a connecting rod assembly 500. The connecting rod assembly 500 includes an outer rod 510 and an inner rod 520 connected to each other. The outer rod 510 can be connected to the base 100, that is, the first collection assembly 200 can be deeply inserted into the guide cylinder located in the component pool 40 to collect the broken pins 202, which is convenient for relevant personnel to perform remote operation. The inner rod 520 can be connected to the gear 410, that is, the gear 410 can be driven by the inner rod 520 to change the working state of the first collection assembly 200 to complete the relevant broken pin 202 collection operation.

[0065] Reference Figures 3 to 8 The specific connection arrangement between the base 100 and the core plate 20 is described below. Figure 8 The core plate 20 may be provided with a mounting hole 203, and the mounting hole 203 may be a square hole. Figure 6 The base 100 has a clamping portion 110. The clamping portion 110 may be provided with a mounting hole 203 in a direction parallel to the axis of the pin hole 201 so that the base 100 can clamp the core plate 20. Compared with the solution of connecting the base and the core plate with bolts, this solution does not require other auxiliary connectors, and can effectively improve the connection efficiency between the base 100 and the core plate 20.

[0066] Reference Figure 2 and Figure 6 Next, the arrangement of the clamping portion 110 is described. Figure 2 The orientation in is used as a reference, that is, from bottom to top, the cross-sectional area of ​​the clamping portion 110 along the first direction X gradually decreases. The clamping portion 110 of this solution adopts a gradual cross-section, which facilitates the clamping portion 110 to penetrate the core plate 20.

[0067] It should be noted that since the pickup device 10 is affected by the buoyancy of the water in the component pool 40, it is necessary to ensure that the base 100 and the core plate 20 have a high connection strength. In some embodiments, the peripheral wall of the clamping portion 110 can be provided with a pattern, which can increase the friction between the clamping portion 110 and the mounting hole 203, and further improve the stability of the connection between the clamping portion 110 and the core plate 20.

[0068] Reference Figure 6, the specific structure of the clamping portion 110 is described below. In some embodiments, the clamping portion 110 includes a first inclined surface 111 facing the peripheral wall of the mounting hole 203. It can be understood that the first inclined surface 111 can be a wall surface on any side of the clamping portion 110 along its circumference. To facilitate the description and understanding of the inclination direction of the first inclined surface 111, this embodiment uses the side of the first inclined surface 111 to define it. Specifically, the first inclined surface 111 has a first side 1111 close to the core plate 20 and a second side 1112 away from the core plate 20. Among them, the distance from the first side 1111 to the axis of the mounting hole 203 is less than the distance from the second side 1112 to the axis of the mounting hole 203. It should be noted that in some embodiments, a single first inclined surface 111 can be provided. In other embodiments, multiple first inclined surfaces 111 can also be provided. Some embodiments of the present application are described by taking the provision of multiple first inclined surfaces 111 (the side wall surfaces of the clamping portion 110 along the circumference are all first inclined surfaces 111) as an example.

[0069] Reference Figure 3 In some embodiments, the pickup device 10 further includes a radiation-resistant camera 600. The radiation-resistant camera 600 has good radiation resistance, high low-light sensitivity, can perform optical zoom, can transmit high-quality images to identify the position of the pin hole 201, and can accurately locate and collect the broken pin 202. The radiation-resistant camera 600 can be connected to the connecting rod assembly 500. Specifically, the radiation-resistant camera 600 can be disposed at one end of the outer rod 510 close to the base 100.

[0070] Reference Fig. 9 In some embodiments, the picking device 10 further includes a lever 700. A lever 710 is provided at one end of the lever 700 close to the first collecting assembly 200. Figure 4 and Fig. 9 , the first collection assembly 200 further includes a first connection hole 250 that is in communication with the first accommodation cavity 230. Specifically, the lever 700 may be provided with the first connection hole 250 so that the paddle 710 abuts against the broken pin 202 in the first accommodation cavity 230. When the broken pin 202 is too large to be accommodated in the first accommodation cavity 230 in a horizontal or vertical state, the present solution may operate the lever 700 so that the paddle 710 drives the broken pin 202, that is, the broken pin 202 is sufficiently tilted so as to be stably accommodated in the first accommodation cavity 230.

[0071] The specific working process of a picking device 10 according to an embodiment is introduced below. The picking device 10 includes a base 100, a first collecting assembly 200 and a second collecting assembly 300. First, the first collecting assembly 200 is placed in the second state and the second collecting assembly 300 is placed in the fourth state, that is, the first collecting assembly 200 and the second collecting assembly 300 are both in the folded state. Secondly, with the assistance of a radiation-resistant camera 600, the base 100, the first collecting assembly 200 and the second collecting assembly 300 are hoisted using a connecting rod assembly 500, so that the clamping portion 110 of the base 100 passes through the mounting hole 203 of the core plate 20, thereby realizing the positioning connection between the picking device 10 and the core plate 20. Then, the relevant personnel can operate the inner rod 520 of the connecting rod assembly 500 (manually screwed or driven by a motor) to make the gear 410 synchronously drive the first rack 420 and the second rack 430 to move, thereby switching the first collection assembly 200 to the first state and the second collection assembly 300 to the second state, that is, aligning the first opening 240 of the first cover body 220 with one pin hole 201 and aligning the second opening 340 of the second cover body 320 with another pin hole 201. Then, the pin-lifting assembly is used to synchronously lift the broken pins 202 in the two pin holes 201, so that the two broken pins 202 enter the first accommodating cavity 230 and the second accommodating cavity 330 respectively. Subsequently, the first collection assembly 200 is driven to switch to the second state, and the second collection assembly 300 is driven to switch to the fourth state, so that each broken pin 202 can be stably accommodated in the accommodating cavity. Finally, the picking device 10 carries the broken pin 202 out of the component pool 40 and transfers it to the top of the waste storage container. The inner rod 520 is operated again to drive the first collection component 200 to switch to the first state, and drives the second collection component 300 to switch to the second state, so that the broken pin 202 can fall from the accommodating cavity into the waste storage container, completing the collection of the broken pin 202.

[0072] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0073] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or", "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0074] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A picking device for picking up broken pins in a nuclear power plant, wherein the broken pins are located in the pin holes of the core plates. It is characterized in that The pickup device comprises: A base, adapted to connect the core plate; A first collecting assembly, comprising a first shell and a first cover connected to each other, wherein the first shell and the first cover together form a first accommodating cavity, the first collecting assembly comprises a first opening communicating with the first accommodating cavity, the first opening is arranged at the bottom of the first collecting assembly, and the first shell is connected to the base; Wherein, the first collecting component is configured to have a first state and a second state. In the first state, the first opening is exposed and connected to the pin hole, and in the second state, the first opening is at least partially closed; the first cover body can move in a direction close to the first shell body to switch the first collecting component from the first state to the second state.

2. The pickup device according to claim 1, It is characterized in that The first opening is provided on the first cover body, and the base is provided with a first slot body. From the first state to the second state, the first cover body passes through the first slot body, and the slot bottom wall of the first slot body at least partially closes the first opening.

3. The pickup device according to claim 1, It is characterized in that Also includes: A second collecting assembly, comprising a second shell and a second cover connected to each other, the second shell and the second cover together forming a second accommodating cavity, the second collecting assembly comprising a second opening communicating with the second accommodating cavity, the second opening being arranged at the bottom of the second collecting assembly, and the second shell being connected to the base; Wherein, the second collecting component is configured to have a third state and a fourth state. In the third state, the second opening is exposed and connected to the pin hole, and in the fourth state, the second opening is at least partially closed; the second cover body can move in a direction close to the second shell body to switch the second collecting component from the third state to the fourth state.

4. The pickup device according to claim 3, It is characterized in that The second opening is provided on the second cover body, and the base is provided with a second groove body. From the third state to the fourth state, the second cover body passes through the second groove body, and the groove bottom wall of the second groove body at least partially closes the second opening.

5. The pickup device according to claim 3, It is characterized in that Also includes: The transmission assembly includes a gear and a first rack and a second rack meshing with the gear, the first rack and the second rack are arranged opposite to each other, the first rack is connected to the first cover body to drive the first cover body close to the first shell, and the second rack is connected to the second cover body to drive the second cover body close to the second shell.

6. The pickup device according to claim 5, It is characterized in that The picking device includes a connecting rod assembly, which includes an outer rod and an inner rod connected to each other, the outer rod is connected to the base, and the inner rod is connected to the gear to drive the first collecting assembly to switch between the first state and the second state.

7. The pickup device according to claim 5, It is characterized in that The first collecting assembly and the second collecting assembly are arranged opposite to each other along a first direction. Along the first direction, the first cover body is located on the side of the first shell away from the base, and the second cover body is located on the side of the second shell away from the base. The first direction is perpendicular to the axial direction of the pin hole.

8. The pickup device according to claim 7, It is characterized in that The core plate is provided with a mounting hole, and the base includes a clamping portion, which passes through the mounting hole in a direction parallel to the axis of the pin hole, and the cross-sectional area of ​​the clamping portion along the first direction gradually decreases in a direction away from the core plate.

9. The pickup device according to claim 1, It is characterized in that The picking device also includes a lever, and a paddle is provided at one end of the lever close to the first collecting component. The first collecting component also includes a first connecting hole connected to the first accommodating cavity. The lever is suitable for passing through the first connecting hole so that the paddle abuts against the broken pin in the first accommodating cavity.

10. The pickup device according to claim 1, It is characterized in that The pick-up device also includes a radiation-resistant camera and a connecting rod assembly, wherein the connecting rod assembly includes an outer rod connected to the base, and the radiation-resistant camera is connected to the outer rod to identify the position of the pin hole.

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