Pump shell bolt automatic dismounting device and system

Abstract

The application relates to a pump shell bolt automatic dismounting device and system, the pump shell bolt automatic dismounting device comprises a base, a rotary support seat and a hoisting assembly, the rotary support seat is arranged on the base and comprises a support part, a support part and a sliding way beam, one end of the support part along a first direction is connected with the base, the support part is arranged at one end of the support part away from the base along the first direction and is rotationally connected with the support part, the sliding way beam is arranged on one side of the support part along a second direction, the first direction intersects with the second direction; the hoisting assembly is slidably connected with the sliding way beam along the second direction and comprises a pneumatic balancer and an operation part connected with the pneumatic balancer, the operation part is used for screwing the bolt, and the pneumatic balancer is used for controlling the position of the bolt along the first direction. The pump shell bolt automatic dismounting device and system provided by the application at least solve the problems that the labor intensity of bolt dismounting is too large and the main pump hydraulic component maintenance lasts for a long time in the related art.

Description

Technical Field

[0001] This application relates to the field of nuclear power plant main pump maintenance technology, and in particular to an automatic pump casing bolt disassembly and assembly device and system. Background Technology

[0002] Replacing the hydraulic components of the main pump is a highly challenging core operation in nuclear power plant maintenance, mainly involving the replacement of key hydraulic components such as the impeller and guide vanes of the reactor main pump.

[0003] The replacement of hydraulic components of the main pump in related technologies usually involves manually removing the main flange bolts and then using a gantry crane to lift them one by one to the platform for storage. However, the cyclic lifting of the gantry crane takes up a lot of time during the overhaul process. At the same time, each bolt needs to be removed and tied manually, which is too labor-intensive and inefficient. During the lifting process, the bolts are prone to shaking, which poses certain safety hazards to the workers and surrounding equipment. Summary of the Invention

[0004] Therefore, it is necessary to provide an automatic pump casing bolt disassembly and assembly device and system to address the problems of excessive manual labor intensity in bolt disassembly and long maintenance time of main pump hydraulic components in related technologies.

[0005] This application provides an automatic pump casing bolt disassembly and assembly device, which includes a base, a rotating support base, and a lifting assembly. The rotating support base is disposed on the base and includes a bracket part, a support part, and a slide beam. One end of the bracket part along a first direction is connected to the base, and the support part is disposed at the end of the bracket part away from the base along the first direction and is rotatably connected to the bracket part. The slide beam is disposed on one side of the support part along a second direction, and the first direction and the second direction intersect. The lifting assembly is slidably connected to the slide beam in the second direction and includes a pneumatic balancer and an operating part connected to the pneumatic balancer. The operating part is used to tighten the bolt, and the pneumatic balancer is used to control the position of the bolt in the first direction.

[0006] In some embodiments, the slide beam includes a first beam connected to a support and a second beam slidably connected to the first beam; along a second direction, the first beam is provided with at least one locking member, the second beam is positioned with the first beam by the locking member, and the lifting assembly is slidably connected to the second beam.

[0007] In some embodiments, the lifting assembly further includes a controller, and the operating unit includes a handle, a motor, and a disassembly / assembly terminal. The disassembly / assembly terminal is connected to the motor, the motor is connected to the controller, and the controller is connected to the handle.

[0008] In some embodiments, the controller is disposed on the side of the support facing away from the slide beam along the second direction.

[0009] In some embodiments, the rotary support also includes a counterweight, which is disposed on the side of the support facing away from the slide beam along the second direction.

[0010] In some embodiments, both the bracket and the support are hollow structures, and the rotating support also includes an electric slip ring; the electric slip ring is disposed inside the bracket and the support and is located at the rotational connection between the bracket and the support.

[0011] In some embodiments, the bracket includes a first segment and a second segment connected to each other, the first segment being connected to the base and the second segment being connected to the support; the first segment is made of carbon steel and the second segment is made of titanium alloy.

[0012] In some embodiments, the automatic pump housing bolt disassembly and assembly device further includes a storage unit, which includes a first annular layer, a second annular layer, and a third annular layer that are sequentially spaced along a first direction and located on the outer periphery of the support portion; the first annular layer is connected to the base, the second annular layer is provided with a plurality of first through structures, and the third annular layer is provided with a plurality of second through structures. In the first direction, the projections of a first through structure and a second through structure at least partially overlap and fall on the first annular layer.

[0013] In some embodiments, the second through structure includes a first clamp arm and a second clamp arm, at least one of which is hinged to a third annular layer so that the two can switch between an open state and a closed state; in the open state, the ends of the first clamp arm and the second clamp arm opposite to the support portion are separated and form an opening; in the closed state, the ends of the first clamp arm and the second clamp arm opposite to the support portion are closed.

[0014] This application also provides an automatic pump casing bolt disassembly and assembly system, which includes an automatic pump casing bolt disassembly and assembly device as provided in any of the foregoing embodiments and a lifting device, wherein the lifting device is detachably connected to the rotating support base.

[0015] The automatic pump casing bolt removal and installation device and system provided in the embodiments of this application have at least the following beneficial effects:

[0016] By mounting the lifting assembly on a rotating support, operators can rotate the bracket and support relative to each other as needed, thereby adjusting the position of the lifting assembly. Simultaneously, the bolts are automatically disassembled by manipulating the operating unit. After disassembly, the bolts are lifted by a pneumatic balancer, allowing them to be suspended under low gravity. This facilitates precise positioning and placement of the bolts after disassembly by the operator, reducing the operator's labor intensity, improving the efficiency of bolt disassembly and assembly, and enhancing the reliability of the bolt disassembly and assembly process.

[0017] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A three-dimensional structural schematic diagram of an automatic pump casing bolt disassembly and assembly device provided in an embodiment of this application;

[0020] Figure 2 for Figure 1 An enlarged view of part A of the automatic pump casing bolt disassembly and assembly device shown;

[0021] Figure 3 This is a front view of an automatic pump casing bolt disassembly and assembly device provided in an embodiment of this application;

[0022] Figure 4 This is a perspective view of the operating part in an automatic pump casing bolt disassembly and assembly device provided in an embodiment of this application;

[0023] Figure 5 This is a cross-sectional structural diagram of the connection position between the bracket and the support in an automatic pump casing bolt disassembly and assembly device provided in an embodiment of this application.

[0024] In the attached diagram, 100 is the automatic pump casing bolt disassembly and assembly device; 10 is the base; 20 is the rotating support seat; 21 is the bracket; 211 is the first section; 212 is the second section; 22 is the support part; 23 is the slide beam; 231 is the first beam; 232 is the second beam; 24 is the counterweight; 25 is the electric slip ring; 30 is the lifting assembly; 31 is the pneumatic balancer; 32 is the operating part; 321 is the handle; 322 is the motor; 323 is the disassembly and assembly terminal; 33 is the controller; 40 is the storage unit; 41 is the first annular layer; 42 is the second annular layer; and 43 is the third annular layer.

[0025] X, first direction; Y, second direction; 101, first through structure; 102, second through structure; 1021, first clamp arm; 1022, second clamp arm; 200, bolt. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0028] Furthermore, where the term "and / or" appears, "and / or" merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. Where the terms "first" and "second" appear, these terms are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" can explicitly or implicitly include at least one of those features. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0032] Please refer to the following: Figures 1 to 5 This application provides an automatic pump casing bolt disassembly and assembly device 100, which includes a base 10, a rotating support 20, and a lifting assembly 30. The rotating support 20 is disposed on the base 10 and includes a bracket 21, a support 22, and a slide beam 23. One end of the bracket 21 along the first direction X is connected to the base 10. The support 22 is disposed at the end of the bracket 21 along the first direction X away from the base 10 and is rotatably connected to the bracket 21. The slide beam 23 is disposed on one side of the support 22 along the second direction Y, where the first direction X and the second direction Y intersect. The lifting assembly 30 is slidably connected to the slide beam 23 in the second direction Y and includes a pneumatic balancer 31 and an operating part 32 connected to the pneumatic balancer 31. The operating part 32 is used to tighten the bolt 200, and the pneumatic balancer 31 is used to control the position of the bolt 200 in the first direction X.

[0033] The automatic pump casing bolt disassembly and assembly device 100 is a device that assists operators in disassembling or installing the pump casing bolts 200 of the main pump of a nuclear power plant. It aims to improve the automation level of pump casing bolt disassembly 200, reduce the workload of operators, and improve the reliability of the pump casing bolt disassembly and assembly steps.

[0034] The base 10 serves as the load-bearing base for the entire device, providing an installation and support foundation for other components of the device. The base 10 may be plate-shaped or block-shaped, and can be selected according to the size of the bolts 200 that need to be disassembled and assembled. In some embodiments, the base 10 may be slidably connected to the support surface (ground) so that the position of the automatic pump housing bolt disassembly and assembly device 100 can be quickly adjusted as needed.

[0035] The rotating support 20 is disposed on the base 10. In a possible implementation, the rotating support 20 can be detachably connected to the base 10 to facilitate subsequent disassembly and assembly of the rotating support 20, thereby improving the convenience of maintenance or replacement of the rotating support 20. In some embodiments, the rotating support 20 can also be fixedly connected to the base 10 to improve the structural stability of the rotating support 20.

[0036] Both the bracket portion 21 and the support portion 22 are the main support structures in the rotating support base 20. The bracket portion 21 is used to increase the size of the rotating support base 20 in the first direction X (height direction), thereby providing height space for the subsequent lifting of the disassembled bolts 200.

[0037] In the first direction X, the base 10, the bracket 21 and the support 22 are connected in sequence, forming the structure of the pump casing bolt automatic disassembly and assembly device 100 in the height direction. The support 22 is rotatably connected to the bracket 21 so that the components installed on the support 22 can rotate relative to the bracket 21, thereby facilitating the operator to disassemble and assemble the bolts 200 in different positions and improving the convenience of the operator to disassemble and assemble the bolts 200.

[0038] The rotatable connection between the bracket portion 21 and the support portion 22 can be achieved by having a rotating shaft provided at one end of the bracket portion 21 away from the base 10 along the first direction X, and the support portion 22 mounted on the rotating shaft, thereby realizing the rotatable connection between the support portion 22 and the bracket portion 21; or, in some embodiments, the bracket portion 21 and the support portion 22 can be connected by a bearing.

[0039] The slide beam 23 is a component in the pump casing bolt automatic disassembly and assembly device 100 used to adjust the relative position between the pump casing and the main pump casing in the second direction Y. The lifting assembly 30 is slidably connected to the slide beam 23 in the second direction Y, so that the lifting assembly 30 can adjust its position on the slide beam 23 in the second direction Y, thereby disassembling and assembling the bolts 200 located in different positions.

[0040] When the operator uses the pump casing bolt automatic disassembly and assembly device 100 to disassemble the pump casing bolt 200, the operator first moves the base 10 to the vicinity of the main pump casing, then rotates the support part 22 to move the side of the support part 22 with the slide beam 23 closer to the main pump casing, and then adjusts the position of the lifting assembly 30 on the slide beam 23 so that the lifting assembly 30 can freely adjust its positional relationship with the main pump casing, thereby disassembling different bolts.

[0041] The pneumatic balancer 31 is the component in the lifting assembly 30 that is actually used to lift the bolt 200 so that the bolt 200 can be suspended after it is disassembled and then transferred to the storage location for storage.

[0042] The operating unit 32 is a part controlled by the operator. The operator can disassemble or install the bolt 200 by manipulating the operating unit 32, thereby eliminating the need for the operator to tie the bolt 200, which greatly reduces the difficulty of the operator's work and improves reliability.

[0043] In these embodiments of this application, the operating part 32 and the pneumatic balancer 31 can be fixedly connected to improve the structural consistency between the operating part 32 and the pneumatic balancer 31, and further improve the reliability of the bolt 200 disassembly and assembly; or, in some embodiments, the operating part 32 and the pneumatic balancer 31 can be detachably connected so that the operating part 32 and the pneumatic balancer 31 can be connected during the operation of the automatic pump housing bolt disassembly and assembly device 100, while the operating part 32 can be removed and stored during non-operational processes of the automatic pump housing bolt disassembly and assembly device 100, reducing the load on the pneumatic balancer 31 and ensuring that the operating part 32 is well preserved, which can effectively improve the service life of the automatic pump housing bolt disassembly and assembly device 100.

[0044] According to the automatic pump casing bolt disassembly and assembly device 100 provided in the embodiments of this application, by setting the lifting assembly 30 on the rotating support 20, the operator can rotate the bracket 21 and the support 22 relative to each other as needed, thereby adjusting the position of the lifting assembly 30. At the same time, the bolt 200 is automatically disassembled by controlling the operation unit 32. The bolt 200 is lifted after disassembly by the pneumatic balancer 31, so that the bolt 200 is suspended under low gravity, which is convenient for the operator to accurately position and place after disassembly. This helps to reduce the labor intensity of the operator, improve the disassembly and assembly efficiency of the bolt 200, and improve the reliability of the bolt 200 disassembly and assembly process.

[0045] In some embodiments, the slide beam 23 includes a first beam 231 connected to the support portion 22 and a second beam 232 slidably connected to the first beam 231; along the second direction Y, the first beam 231 is provided with at least one locking member (not shown), the second beam 232 is positioned with the first beam 231 by the locking member, and the lifting assembly 30 is slidably connected to the second beam 232.

[0046] The slide beam 23 provides a moving guide for the lifting assembly 30 in the second direction Y. In some embodiments, the slide beam 23 can be configured as a single beam structure, and the lifting assembly 30 is directly slidably connected to the beam structure. In these embodiments of this application, the slide beam 23 includes a first beam 231 and a second beam 232. By configuring the slide beam 23 as a split structure, the effective working length of the slide beam 23 in the second direction Y can be adjusted according to actual needs, which is beneficial to improving the adaptability of the automatic pump casing bolt disassembly and assembly device 100 to pump casings of different sizes.

[0047] The first beam 231 is the part of the slide beam 23 that connects to the support part 22, and is used to provide an installation foundation for the second beam 232. A possible implementation of the first beam 231 and the support part 22 is that the first beam 231 can be fixedly connected to the support part 22 by welding or integral molding to improve the structural stability between the first beam 231 and the support part 22; or, in some embodiments, the first beam 231 and the support part 22 can be detachably connected to facilitate subsequent maintenance or replacement of the first beam 231.

[0048] The second beam 232 is the part of the slide beam 23 that is actually slidably connected to the lifting assembly 30. The second beam 232 is slidably connected to the first beam 231 so that the second beam 232 can extend and retract relative to the first beam 231 in the second direction Y, thereby adjusting the overall working length of the slide beam 23. At least one locking element is provided on the first beam 231 along the second direction Y. The locking element is used to lock the relative position between the second beam 232 and the first beam 231 after the second beam 232 slides to a suitable position relative to the first beam 231, preventing the second beam 232 from slipping relative to the first beam 231 during operation, thus improving the positional stability of the lifting assembly 30 during operation.

[0049] One possible implementation of the locking mechanism is that it can be configured as a set screw structure, where tightening the set screw causes the end of the set screw to press against the second beam 232, thereby locking the position between the second beam 232 and the first beam 231; or, in some embodiments, the locking mechanism can also be configured as a quick clamp structure, where operating the quick clamp enables quick locking and releasing of the second beam 232, which is beneficial to improving the efficiency of the operator in adjusting the working length of the slide beam 23.

[0050] The lifting assembly 30 is slidably connected to the second beam 232, allowing the lifting assembly 30 to move in the second direction Y under the guidance of the second beam 232, thereby disassembling and assembling bolts 200 located at different positions. When the operator uses the automatic pump casing bolt disassembly and assembly device 100 to disassemble the pump casing bolts 200, the operator first adjusts the extension length of the second beam 232 relative to the first beam 231 according to the size of the main pump casing, and then locks the second beam 232 with the locking device, so that the overall working length of the slide beam 23 matches the current size of the main pump casing. Then, by sliding the lifting assembly 30 on the second beam 232, the bolts 200 at different positions are disassembled.

[0051] In some embodiments, the lifting assembly 30 further includes a controller 33, and the operating unit 32 includes a handle 321, a motor 322, and a disassembly / assembly terminal 323. The disassembly / assembly terminal 323 is connected to the motor 322, the motor 322 is connected to the controller 33, and the controller 33 is connected to the handle 321.

[0052] The controller 33 is the control core of the lifting assembly 30, used to receive operating instructions from the operator and control the operating unit 32 to perform corresponding actions. Possible implementations of the controller 33 include setting it as a microcontroller or PLC controller to achieve precise control of the operating unit 32; in some embodiments, the controller 33 may also be connected to an external power supply or air source to provide the energy required for the operation of the operating unit 32.

[0053] In these embodiments of the present application, the lifting assembly 30 also includes a controller 33. By setting the controller 33 to electrically control the operating part 32, the disassembly and assembly process of the bolt 200 can be electrified, which helps to reduce the labor intensity of the operator and improve the disassembly and assembly efficiency of the bolt 200.

[0054] The operating unit 32 is the part directly controlled by the operator, used to translate the operator's operating intentions into actual disassembly and assembly actions of the bolt 200. In these embodiments of this application, the operating unit 32 includes a handle 321, a motor 322, and a disassembly and assembly terminal 323. By setting the operating unit 32 as a multi-component combination structure, the operator can perform human-machine interaction through the handle 321, provide disassembly and assembly power through the motor 322, and directly contact the bolt 200 through the disassembly and assembly terminal 323, thereby realizing the automation and precision of the bolt 200 disassembly and assembly process.

[0055] The handle 321 is the part of the operating unit 32 that directly interacts with the operator. It provides a gripping position for the operator and transmits the operator's operating commands to the controller 33. A possible implementation of the handle 321 is that it can be a grip structure made of insulating material to improve operator safety during use. In some embodiments, control buttons or joysticks can also be provided on the handle 321, allowing the operator to send commands such as forward rotation, reverse rotation, or stop to the controller 33, thereby controlling the operating state of the motor 322.

[0056] Motor 322 is the power output component of the operating unit 32, used to provide rotational power to the disassembly / removal terminal 323 to automatically tighten or loosen the bolts 200. Motor 322 is connected to controller 33 so that controller 33 can control the start / stop, speed, and direction of rotation of motor 322 according to the operating commands transmitted by handle 321. Possible implementations of motor 322 include setting it as a servo motor for precise control of speed and torque; or, in some embodiments, setting it as a stepper motor or a conventional DC motor, selected according to actual disassembly / removal requirements.

[0057] The disassembly / assembly terminal 323 is the part of the operating section 32 that directly contacts the bolt 200. It is used to mate with the head of the bolt 200 to transmit the rotational torque output by the motor 322. The disassembly / assembly terminal 323 is connected to the motor 322. In some implementations, the disassembly / assembly terminal 323 can be connected to the output end of the motor 322 via a coupling or drive shaft to transmit rotational power. In some embodiments, a reducer can also be used to connect the disassembly / assembly terminal 323 and the motor 322 to increase the output torque and accommodate the disassembly / assembly of larger bolts 200. The disassembly / assembly terminal 323 can be configured as a sleeve structure adapted to the head of a specific bolt 200, or it can be configured as a universal clamping structure, depending on the actual application scenario.

[0058] When the operator uses the automatic pump housing bolt disassembly and assembly device 100 to disassemble the pump housing bolt 200, the operator first holds the handle 321, aligns and fits the disassembly and assembly terminal 323 with the head of the bolt 200 to be disassembled, and then sends a reverse command to the controller 33 through the control button on the operating handle 321. The controller 33 controls the motor 322 to rotate in the opposite direction, thereby driving the disassembly and assembly terminal 323 and the bolt 200 to rotate, so as to realize the automatic loosening of the bolt 200. After the bolt 200 is completely loosened, the pneumatic balancer 31 lifts the bolt 200, and the operator controls the movement direction of the bolt 200 through the handle 321 to transfer the bolt 200 to the storage position.

[0059] In some embodiments, the controller 33 is disposed on the side of the support 22 opposite to the slide beam 23 along the second direction Y.

[0060] The controller 33 is located on the side of the support part 22 opposite to the slide beam 23 along the second direction Y. This arrangement allows the controller 33 and the slide beam 23 to be located on opposite sides of the support part 22. The main purpose is to form a counterweight structure, making the weight distribution on both sides of the support part 22 more balanced. This helps to improve the stability of the support part 22 during rotation and avoids increased rotational resistance or structural imbalance caused by excessive weight on one side.

[0061] The support part 22 is the rotating part of the rotating support base 20 used to support the slide beam 23 and the lifting assembly 30. The slide beam 23 and the lifting assembly 30 are provided on one side of the support part 22 along the second direction Y, and the controller 33 is provided on the other side. By balancing the weights on both sides, the center of gravity of the support part 22 is closer to its rotation center, which helps to reduce the force required for the operator to rotate the support part 22 and improves the convenience of position adjustment.

[0062] One possible implementation of the relationship between the controller 33 and the support 22 is that the controller 33 is enclosed in a control box, which houses the controller 33. The control box is connected to the support 22 to seal and store the controller 33. By providing a control box, the controller 33 is isolated from the external environment, effectively preventing dust, moisture, oil, and other impurities from entering the controller 33. This avoids the risk of corrosion or short circuits to the electrical components inside the controller 33, significantly improving the service life and operational reliability of the controller 33.

[0063] In some embodiments, the rotating support 20 further includes a counterweight 24, which is disposed on the side of the support 22 opposite to the slide beam 23 along the second direction Y.

[0064] The counterweight 24 is a component in the rotary support 20 used to balance the weight on both sides of the support 22. The counterweight 24 is located on the side of the support 22 opposite to the slide beam 23 along the second direction Y, so that the counterweight 24 and the slide beam 23 are located on both sides of the support 22, forming a mutually counterweighting structure. The slide beam 23 and the lifting assembly 30 mounted on it bear a large load in the working state. By setting the counterweight 24 on the other side of the support 22, the weight on the slide beam 23 side can be effectively offset, making the center of gravity of the support 22 closer to its rotation center. This helps to reduce the driving force required for the operator to rotate the support 22, improves the convenience of position adjustment, and reduces the off-center load moment borne by the bracket 21, thereby improving the structural stability and service life of the rotary support 20.

[0065] When the operator uses the pump casing bolt automatic disassembly and assembly device 100 to disassemble the pump casing bolt 200, the operator adjusts the position of the lifting assembly 30 by rotating the support part 22. Since the counterweight 24, the slide beam 23, and the lifting assembly 30 are located on both sides of the support part 22 and form a weight balance, the operator can easily rotate the support part 22 with a small amount of force, so that the slide beam 23 can quickly align with the position of the bolt 200 to be disassembled or assembled, which significantly reduces the labor intensity of the operator and improves the efficiency and smoothness of position adjustment.

[0066] According to the rotary support 20 provided in the embodiments of this application, by setting a counterweight 24 on the side of the support 22 away from the slide beam 23 along the second direction Y, the active balance adjustment of the weight on both sides of the support 22 is realized, which effectively reduces the resistance during the rotation of the support 22, reduces the eccentric load on the bracket 21, and helps to improve the convenience of operators to adjust the position of the lifting assembly 30. At the same time, it extends the service life of the rotary support 20 and enhances the adaptability of the automatic pump casing bolt disassembly and assembly device 100 to pump casings of different specifications.

[0067] In some embodiments, both the bracket portion 21 and the support portion 22 are hollow structures, and the rotating support base 20 further includes an electric slip ring 25; the electric slip ring 25 is disposed inside the bracket portion 21 and the support portion 22, and is located at the rotational connection between the bracket portion 21 and the support portion 22.

[0068] In these embodiments of this application, both the bracket portion 21 and the support portion 22 are hollow structures. By setting the bracket portion 21 and the support portion 22 as hollow structures, a hollow accommodating space is formed inside the bracket portion 21 and the support portion 22, which helps to reduce the overall weight of the rotating support seat 20 and reduce the inertial resistance during rotation. At the same time, the accommodating space can be used to arrange electrical wiring, realize the hidden wiring, and improve the appearance of the pump casing bolt automatic disassembly and assembly device 100 and the wiring safety.

[0069] The rotating support 20 also includes an electric slip ring 25, which is a conductive device used to achieve continuous electrical connection between the rotating and fixed parts. It can transmit electrical signals or energy between the two relatively rotating parts, preventing wire entanglement. The electric slip ring 25 is disposed within the bracket portion 21 and the support portion 22, and is located at the rotational connection between the bracket portion 21 and the support portion 22. By placing the electric slip ring 25 within the internal space of the rotational connection, the electric slip ring 25 is arranged coaxially with the rotational axes of the bracket portion 21 and the support portion 22. This simplifies the structural design of the electric slip ring 25. Simultaneously, the hollow structure of the bracket portion 21 and the support portion 22 provides installation space and protection for the electric slip ring 25, preventing damage from impacts or environmental pollution caused by exposure of the electric slip ring 25.

[0070] In some embodiments, the bracket portion 21 includes a first segment 211 and a second segment 212 connected to each other. The first segment 211 is connected to the base 10, and the second segment 212 is connected to the support portion 22. The first segment 211 is made of carbon steel, and the second segment 212 is made of titanium alloy.

[0071] The first segment 211 is the lower section of the support unit 21 that connects to the base 10. The connection between the first segment 211 and the base 10 serves to fix the support unit 21 to the base 10 and provide basic support for the superstructure. The first segment 211 is made of carbon steel, which has high structural strength and rigidity while being relatively inexpensive. It is suitable as the main load-bearing section of the support unit 21, effectively bearing the load from the superstructure and transferring it to the base 10, thus controlling material costs while ensuring structural reliability.

[0072] The second section 212 is the upper part of the support section 21 that connects to the support section 22. Connected to the support section 22, the second section 212 directly bears the weight of the support section 22, the slide beam 23, and the lifting assembly 30, and shares the inertial load during rotation with the support section 22. The second section 212 is made of titanium alloy, which has high specific strength and good corrosion resistance. Its excellent lightweight properties allow the second section 212 to significantly reduce weight while meeting structural strength requirements. This helps reduce the inertial resistance during the rotation of the support section 22, improving the ease of rotation for operators. Furthermore, the corrosion resistance of titanium alloy helps extend the service life of the support section 21 in the nuclear power plant environment.

[0073] A possible implementation of the connection between the first segment 211 and the second segment 212 is that they can be detachably connected via flange or threaded connection to facilitate separate manufacturing and subsequent maintenance. In some embodiments, the first segment 211 and the second segment 212 can also be fixedly connected by welding to improve the connection strength and structural consistency between the two segments. At the connection between the first segment 211 and the second segment 212, a transition structure or reinforcing structure can be provided to alleviate stress concentration problems that may be caused by different materials, ensuring the overall structural reliability of the support portion 21.

[0074] According to the support section 21 provided in the embodiments of this application, by setting the first section 211 to carbon steel and the second section 212 to titanium alloy, an optimized combination of high strength and low cost in the lower part of the support section 21 and lightweight and corrosion resistant upper part is achieved. Under the premise of ensuring structural reliability, the rotational inertia of the upper part is reduced, which is conducive to improving the convenience of operators to adjust the position of the lifting component 30. At the same time, the service life of the support section 21 in the special environment of nuclear power plants is extended, and the overall performance of the automatic pump casing bolt disassembly and assembly device 100 is optimized.

[0075] In some embodiments, the pump housing bolt automatic disassembly and assembly device 100 further includes a storage unit 40. The storage unit 40 includes a first annular layer 41, a second annular layer 42, and a third annular layer 43, which are arranged sequentially at intervals along the first direction X and located on the outer periphery of the support portion 21. The first annular layer 41 is connected to the base 10. The second annular layer 42 is provided with a plurality of first through structures 101. The third annular layer 43 is provided with a plurality of second through structures 102. In the first direction X, the projections of a first through structure 101 and a second through structure 102 at least partially overlap and fall on the first annular layer 41.

[0076] The storage unit 40 is a component in the automatic pump casing bolt disassembly and assembly device 100 used to store the disassembled bolts 200. The storage unit 40 is set on the base 10 on the outer periphery of the support part 21. With this arrangement, the storage unit 40 is located within the working stroke range of the operating part 32. The operator can transfer the disassembled bolts 200 to the storage unit 40 without making large movements, which further shortens the stroke of the operating part 32 and improves the operating efficiency. At the same time, the storage unit 40 is set on the base 10, so that the storage position of the bolts 200 is close to the center of gravity of the device, which helps to maintain the overall stability of the automatic pump casing bolt disassembly and assembly device 100.

[0077] The storage unit 40 includes a first annular layer 41, a second annular layer 42, and a third annular layer 43, which are arranged at intervals along the first direction X and located on the outer periphery of the support portion 21. By setting up a three-layer annular structure, a multi-point limiting support system for the bolt 200 is formed to improve the stability of the bolt 200 during storage. The three annular layers are arranged at intervals along the first direction X, so that the bolt 200 can be simultaneously subjected to radial constraints at three height positions during vertical storage, effectively preventing the bolt 200 from shaking or tipping over when the device moves, rotates, or is disturbed by external forces, thus significantly improving storage safety.

[0078] The first annular layer 41 is the bottom support structure of the storage unit 40 closest to the base 10. The first annular layer 41 is connected to the base 10 and provides bottom support for the stored bolts 200. A possible implementation of the first annular layer 41 is that it can be fixedly connected to the base 10 by welding or bolting to form a stable support foundation. In some embodiments, the first annular layer 41 can also be detachably connected to the base 10 to facilitate subsequent maintenance or cleaning of the storage unit 40.

[0079] The second annular layer 42 is an intermediate limiting structure disposed above the first annular layer 41 in the storage unit 40. The second annular layer 42 is provided with a plurality of first through structures 101. The first through structure 101 is a through hole or opening structure for the bolt 200 to pass through, and is used to radially limit the middle section of the bolt 200.

[0080] The third annular layer 43 is a top limiting structure set above the second annular layer 42 in the storage unit 40. The third annular layer 43 is provided with a plurality of second through structures 102. The second through structures 102 are also through holes or openings for the bolts 200 to pass through, and are used to radially limit the upper section of the bolts 200.

[0081] In the first direction X, the projections of a first through structure 101 and a second through structure 102 at least partially overlap and fall on the first annular layer 41. By setting this projection position relationship, the bolt 200 can pass through the second through structure 102 and the first through structure 101 in sequence along the first direction X, and finally be supported on the first annular layer 41, forming a stable vertical storage state defined by the three annular layers.

[0082] One possible connection method between the three annular layers is that the first annular layer 41, the second annular layer 42, and the third annular layer 43 can be fixedly connected by columns or rods extending along the first direction X to form an overall frame-type storage structure.

[0083] When the operator uses the automatic pump casing bolt disassembly and assembly device 100 to disassemble the pump casing bolts 200, the operator first lifts the disassembled bolts 200 using the lifting assembly 30 and moves them above the storage unit 40. The bolts 200 are then passed sequentially through the second through structure 102 on the third annular layer 43 and the first through structure 101 on the second annular layer 42, so that the bottom of the bolts 200 is supported on the first annular layer 41, thus completing the stable storage of the bolts 200. After all the bolts 200 have been disassembled, the operator can use a ring crane in conjunction with a hoist to lift and transfer all the bolts 200 stored in the storage unit 40 in one batch at once, without having to operate them individually, which significantly improves work efficiency.

[0084] In some embodiments, the second through structure 102 includes a first clamping arm 1021 and a second clamping arm 1022, at least one of the first clamping arm 1021 and the second clamping arm 1022 being hinged to a third annular layer 43 so that the two can switch between an open state and a closed state; in the open state, the ends of the first clamping arm 1021 and the second clamping arm 1022 opposite to the support portion 21 are separated and form an opening; in the closed state, the ends of the first clamping arm 1021 and the second clamping arm 1022 opposite to the support portion 21 are closed.

[0085] The first clamping arm 1021 and the second clamping arm 1022 are movable components that form a limiting space in the second through-structure 102. At least one of the first clamping arm 1021 and the second clamping arm 1022 is hinged to the third annular layer 43 so that they can switch between an open state and a closed state. Possible implementations include hinged first clamping arm 1021 to the third annular layer 43 and fixedly connected second clamping arm 1022 to the third annular layer 43; or hinged second clamping arm 1022 to the third annular layer 43 and fixedly connected first clamping arm 1021 to the third annular layer 43; in some embodiments, both the first clamping arm 1021 and the second clamping arm 1022 may be hinged to the third annular layer 43 to achieve double-sided opening and further improve operational flexibility.

[0086] In the open state, the first clamp arm 1021 and the second clamp arm 1022 are separated at the ends away from the support portion 21 and form an opening. Through this opening, the operator can radially push the bolt 200 from the outside of the third annular layer 43 into the second through structure 102 without having to insert the bolt 200 vertically from above the third annular layer 43. This significantly reduces the difficulty of aligning the bolt 200 with the second through structure 102. Especially when the operating space is limited or the bolt 200 is heavy, the open state design makes the storage and operation of the bolt 200 more convenient and labor-saving.

[0087] In the closed state, the ends of the first clamp arm 1021 and the second clamp arm 1022 facing away from the support portion 21 are closed, forming a closed limiting space or a reduced opening to prevent the bolt 200 stored therein from coming out of the second through structure 102 when the device moves or is subjected to external force, thereby improving the stability and safety of bolt 200 storage. In the closed state, the first clamp arm 1021 and the second clamp arm 1022 can form an approximately circular or waist-shaped limiting space that adapts to the outer contour of the bolt 200, so as to fit the outer periphery of the shank of the bolt 200 and provide effective radial restraint.

[0088] One possible implementation between the first clamp arm 1021 and the second clamp arm 1022 is to provide an elastic reset element (such as a torsion spring or tension spring) to connect the first clamp arm 1021 and the second clamp arm 1022 or the third annular layer 43, so that the first clamp arm 1021 and the second clamp arm 1022 are normally kept in a closed state, and the operator needs to overcome the elastic force to open them; or, in some embodiments, a locking structure can be provided to lock the first clamp arm 1021 and the second clamp arm 1022 to each other in the closed state, preventing accidental opening and further improving storage security.

[0089] When the operator uses the pump casing bolt automatic disassembly and assembly device 100 to store the disassembled bolts 200, the operator first switches the first clamp arm 1021 and the second clamp arm 1022 to the open state, so that the ends of the two away from the support part 21 are separated to form an opening. Then, the bolts 200 are lifted to the outside of the third annular layer 43 by the lifting assembly 30. The bolts 200 are pushed into the second through structure 102 through the opening, so that the shank of the bolts 200 enters the limiting space between the first clamp arm 1021 and the second clamp arm 1022. Then, the first clamp arm 1021 and the second clamp arm 1022 are switched to the closed state, so that the ends of the two away from the support part 21 are closed, thus completing the locking and storage of the bolts 200.

[0090] This application also provides an automatic pump casing bolt disassembly and assembly system, which includes an automatic pump casing bolt disassembly and assembly device 100 as provided in any of the foregoing embodiments and a lifting device, wherein the lifting device is detachably connected to the rotating support 20.

[0091] The lifting device is a component in the automatic pump casing bolt removal and installation system used to provide auxiliary lifting capacity. The lifting device is detachably connected to the swivel support 20 so that the lifting device can be quickly installed on or removed from the swivel support 20 as needed. In some embodiments, the lifting device can be configured as an industrial lifting device such as a ring crane, overhead crane, or mobile gantry crane.

[0092] In these embodiments of the present application, the lifting device is used to cooperate with the rotating support 20 to realize the batch transfer of the disassembled bolts 200 or the position adjustment of the entire pump casing bolt automatic disassembly and assembly device 100.

[0093] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An automatic pump casing bolt disassembly and assembly device, characterized in that, include: Base; A rotating support base is disposed on the base and includes a bracket part, a support part, and a slide beam. One end of the bracket part along a first direction is connected to the base. The support part is disposed at the end of the bracket part away from the base along the first direction and is rotatably connected to the bracket part. The slide beam is disposed on one side of the support part along a second direction. The first direction and the second direction intersect. The lifting assembly is slidably connected to the slide beam in the second direction and includes a pneumatic balancer and an operating part connected to the pneumatic balancer. The operating part is used to tighten bolts, and the pneumatic balancer is used to control the position of the bolts in the first direction.

2. The automatic pump casing bolt disassembly and assembly device according to claim 1, characterized in that, The slide beam includes a first beam connected to the support and a second beam slidably connected to the first beam. Along the second direction, the first beam is provided with at least one locking member, the second beam is positioned with the first beam through the locking member, and the lifting assembly is slidably connected to the second beam.

3. The automatic pump casing bolt disassembly and assembly device according to claim 1, characterized in that, The lifting assembly also includes a controller, and the operating unit includes a handle, a motor, and a disassembly / assembly terminal. The disassembly / assembly terminal is connected to the motor, the motor is connected to the controller, and the controller is connected to the handle.

4. The automatic pump casing bolt disassembly and assembly device according to claim 3, characterized in that, The controller is located on the side of the support portion opposite to the slide beam along the second direction.

5. The automatic pump casing bolt disassembly and assembly device according to claim 4, characterized in that, The rotating support also includes a counterweight, which is disposed on the side of the support portion away from the slide beam along the second direction.

6. The automatic pump casing bolt disassembly and assembly device according to claim 1, characterized in that, Both the bracket portion and the support portion are hollow structures, and the rotating support base also includes an electric slip ring; The electric slip ring is disposed within the bracket portion and the support portion, and is located at the rotatable connection between the bracket portion and the support portion.

7. The automatic pump casing bolt disassembly and assembly device according to claim 1, characterized in that, The support portion includes a first section and a second section connected to each other, the first section being connected to the base and the second section being connected to the support portion; The first segment is made of carbon steel, and the second segment is made of titanium alloy.

8. The automatic pump casing bolt disassembly and assembly device according to any one of claims 1 to 7, characterized in that, The automatic pump casing bolt disassembly and assembly device further includes a storage unit, which includes a first annular layer, a second annular layer, and a third annular layer that are sequentially spaced along the first direction and located on the outer periphery of the support portion. The first annular layer is connected to the base, the second annular layer is provided with a plurality of first through structures, and the third annular layer is provided with a plurality of second through structures. In the first direction, the projections of one first through structure and one second through structure at least partially overlap and fall on the first annular layer.

9. The automatic pump casing bolt disassembly and assembly device according to claim 8, characterized in that, The second through structure includes a first clamp arm and a second clamp arm, at least one of which is hinged to the third annular layer so that the two can switch between an open state and a closed state; In the open state, the first clamp arm and the second clamp arm are separated at the ends away from the support portion and form an opening; in the closed state, the first clamp arm and the second clamp arm are closed at the ends away from the support portion.

10. An automatic pump casing bolt disassembly and assembly system, characterized in that, Includes an automatic pump casing bolt disassembly and assembly device as described in any one of claims 1 to 9, and a lifting device, wherein the lifting device is detachably connected to the rotating support base.

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