Disassembling and assembling tool for electric head

Abstract

The utility model belongs to the technical field of mechanical maintenance, and particularly relates to an electric head dismounting tool which comprises a worm fixing part and a nut connecting part, the worm fixing part comprises a first operating part and a fixing part, a penetrating hole for allowing a worm to penetrate through is formed in the fixing part, and the hole wall of the penetrating hole is provided with a limiting structure; the limiting structure is used for being matched with the worm so as to limit rotation of the fixing piece relative to the worm. The first operating part is connected with the fixing part and used for being operated by personnel or equipment to limit rotation of the fixing part; the nut connecting part comprises a second operating part and a connecting part, the connecting part is provided with a connecting through hole, the connecting through hole is used for allowing the worm to penetrate through, the connecting part is provided with a clamping part used for being clamped in a groove of the nut, the second operating part is connected with the connecting part, and the second operating part is used for being operated by personnel or equipment so as to drive the connecting part to rotate; the electric head dismounting tool can improve the reliability and convenience of disassembly and assembly of the electric head.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of mechanical overhaul, and particularly relates to a tool for disassembling and assembling an electric head. BACKGROUND

[0002] With the improvement of the automation level, a nuclear power station sends a signal to an electric head through a main control room operator, and drives a valve to open and close by using the electric head, so as to realize automatic control operation of remotely opening and closing the valve. Since the nuclear power station has high requirements on the reliability of unit operation and equipment, the electric head needs to be disassembled and checked regularly, the wear conditions of various components in the electric head are checked, and sealing rings and lubricating oil are replaced. However, in the actual disassembly and inspection, the slotted nut on the worm of the clutch in the electric head is difficult to disassemble and operate, and if the disassembly method is improper, the worm and the nut are also easily damaged.

[0003] The above statements are only used to provide background technical information related to the application, and do not necessarily constitute prior art. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a tool for disassembling and assembling an electric head, which reduces the difficulty of disassembling the electric head and simplifies the disassembly operation.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of a tool for disassembling and assembling an electric head, which comprises a worm fixing component and a nut connecting component. The worm fixing component comprises a first operating member and a fixing member, the fixing member is provided with a through hole for the worm to pass through, the hole wall of the through hole is provided with a limiting structure, the limiting structure is used to cooperate with the worm to limit the rotation of the fixing member relative to the axis of the worm, and the first operating member is connected with the fixing member and is used for personnel or equipment operation to limit the rotation of the fixing member. The nut connecting component comprises a second operating member and a connecting member, the connecting member is provided with a connecting through hole for the worm to pass through, the connecting member is provided with a clamping member for clamping in the groove of the nut, the second operating member is connected with the connecting member and is used for personnel or equipment operation to drive the connecting member to rotate around the axis of the connecting through hole.

[0006] Optionally, along the axial direction of the connecting through hole, the clamping member is connected to one end of the connecting member, or the clamping member is arranged in the connecting through hole and connected with the hole wall of the connecting through hole.

[0007] Optionally, the connecting piece comprises a first connecting part and a second connecting part connected with each other, the first connecting part and the second connecting part are respectively provided with a first connecting sub-hole and a second connecting sub-hole, the first connecting sub-hole and the second connecting sub-hole are arranged along the axis of the connecting through hole and are connected with each other, the first connecting sub-hole and the second connecting sub-hole jointly form the connecting through hole, the hole diameter of the first connecting sub-hole is larger than the hole diameter of the second connecting sub-hole, the engaging piece is connected to the second connecting part, and the first connecting sub-hole is used for accommodating at least part of the fixing piece.

[0008] Optionally, the outer diameter of the first connecting part is larger than the outer diameter of the second connecting part.

[0009] Optionally, the length direction of the second operating piece intersects with the axis of the connecting through hole, and the connecting piece is located at the middle part of the second operating piece along the length direction.

[0010] Optionally, the number of the connecting pieces is multiple, the multiple connecting pieces are connected with the second operating piece, the multiple connecting pieces are arranged at intervals along the length direction of the second operating piece, and the hole diameters of the connecting through holes of at least two connecting pieces are different.

[0011] Optionally, the hole wall of the through hole is provided with an engaging protrusion for engaging with the engaging groove of the worm, and the engaging protrusion forms the limiting structure.

[0012] Alternatively, the hole wall of the through hole comprises a plane, and the plane forms the limiting structure.

[0013] Alternatively, the hole wall of the through hole is provided with an engaging groove for engaging with the engaging protrusion of the worm, and the engaging groove forms the limiting structure.

[0014] Optionally, the number of the fixing pieces is multiple, the multiple fixing pieces are connected with the first operating piece, and the limiting structures of at least two fixing pieces are different.

[0015] Optionally, the first operating piece comprises multiple operating rods arranged intersectingly, and at least one end of at least one operating rod away from the intersecting position of the multiple operating rods is provided with a fixing piece.

[0016] Optionally, the number of the operating rods is two, the two operating rods are arranged perpendicularly, at least one end of one of the two operating rods is provided with a fixing piece, and at least one end of the other operating rod is provided with a fixing piece.

[0017] The electric head disassembly and assembly tool provided by this utility model has at least one of the following technical effects: When in use, the connecting through hole of the connector is fitted onto the worm gear, and the engaging member engages with the groove on the nut, thus fixing the nut and connector relatively. Then, the through hole of the fixing member is fitted onto the end of the worm gear facing away from the nut. Afterwards, while the operator or equipment rotates the second operating member, the first operating member is fixed. With the first operating member fixed and the fixing member fixed to the worm gear, the nut rotates when the second operating member rotates, but the worm gear does not rotate, thus allowing the nut to be removed from the worm gear or installed on it. During this operation, the connecting through hole allows the worm gear to be exposed, thus enabling... By using the through hole of the fixing component to fit onto the worm, the limiting structure of the fixing component cooperates with the worm, thus preventing the fixing component from rotating relative to the worm around its axis. This achieves relative fixation between the fixing component and the worm, allowing the first operating component to fix the worm and thus enabling the disassembly of the slotted nut. Furthermore, the slotted nut can be assembled and disassembled simply by fixing the first operating component and rotating the second operating component. This simplifies the disassembly and assembly of the slotted nut, reducing the difficulty of assembly and disassembly, and improving the efficiency of replacing the skeleton seal ring and disassembling the electric head. During assembly and disassembly, the method of operating with both the fixing component and the connecting component fitted outside the worm reduces the risk of damage to the electric head components, greatly improving the reliability and convenience of disassembly and assembly of the electric head.

[0018] 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

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, 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.

[0020] Figure 1 This is a schematic diagram of the structure of the electric head disassembly tool provided in some embodiments of this application.

[0021] Figure 2 for Figure 1 The diagram shows the structure of the nut assembly / disassembly component.

[0022] Figure 3 For along Figure 2 Sectional view along line AA in the middle.

[0023] Figure 4 Fig. 1 is a perspective view of a worm fixing member according to an embodiment of the present application. Figure 1 Fig. 2 is a structural schematic view of the worm fixing member shown in Fig. 1.

[0024] Figure 5 Fig. 3 is a sectional view along the line B-B in Fig. 1. Figure 4

[0025] Figure 6 Fig. 4 is a sectional view along the line C-C in Fig. 1. Figure 4

[0026] Figure 7 Fig. 5 is a sectional view along the line B-B in another embodiment of the present application. Figure 4

[0027] In the drawings, reference numerals:

[0028] 100, electric head dismounting tool; 10, worm fixing member; 11, first operating member; 111, operating rod; 12, fixing member; 121, through hole; 122, limiting structure; 20, nut connecting member; 21, second operating member; 22, connecting member; 2201, connecting through hole; 221, first connecting part; 2211, first connecting sub-hole; 222, second connecting part; 2221, second connecting sub-hole; 23, clamping member. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the present specification and claims and the aforementioned drawings, together with the description, explain the technical features of the present application. The terms "comprising" and "having" and any variations thereof used herein are intended to cover a non-exclusive inclusion.

[0031] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0032] ​​​Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in an embodiment” in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated in a variety of embodiments of the application.

[0033] In the description of the embodiments of the present application, the term“and / or” is merely used to describe associated objects, and can represent the three conditions of A and / or B, which can represent three cases of A alone, A and B, and B alone. In addition, the character“ / ” in the present application generally represents an“or” relationship between the front and rear associated objects.

[0034] In the description of the embodiments of the present application, the term“a plurality of” refers to two or more (including two), and similarly, “a plurality of groups” refers to two or more groups (including two groups), and “a plurality of pieces” refers to two or more pieces (including two pieces). The meaning of“several” is one or more, unless otherwise explicitly specified.

[0035] In the description of the embodiments of the present application, the technical terms“center”,“longitudinal”,“transverse”,“length”,“width”,“thickness”,“upper”,“lower”,“front”,“rear”,“left”,“right”,“vertical”,“horizontal”,“top”,“bottom”,“inner”,“outer”,“clockwise”,“counterclockwise”,“axial”,“radial”,“circumferential” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0036] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms“mounting”,“connecting”,“connecting”,“fixing” and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0037] In the description of the embodiments of the present application, unless explicitly defined and limited otherwise, when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0038] It should also be noted that the same reference signs are used to represent the same component or the same part in the embodiments of the present application. For the same parts in the embodiments of the present application, only one part or component may, for example, be labeled with a reference sign in the drawings, and it should be understood that the reference sign is also applicable to other identical parts or components.

[0039] The electric head is a nuclear power plant electric valve drive mechanism. In the nuclear power plant, the automatic signal is sent to the electric head by the main control room operator, and the electric head remotely opens and closes the valve, thereby realizing the automatic control operation of the valve and improving the automation level of the power plant. The electric head includes a motor, a worm gear, a self-locking clutch, a reduction gear, a stroke limiting mechanism, a torque switch mechanism, a valve position feedback, an electrical control mechanism, and the like. Since the nuclear power plant has high requirements for the reliability of the unit operation and equipment, a maintenance outline is formulated for the periodic maintenance of the electric head, and the electric head is disassembled every ten years to check the wear of each component and replace the sealing ring and lubricating oil.

[0040] The number of electric heads in the nuclear power plant is large, and the number of electric heads in some nuclear power bases reaches more than 100. The number of electric head disassembly and maintenance work arranged during the unit overhaul each year is large, which brings great challenges to the on-site disassembly and maintenance work.

[0041] In particular, there is a skeleton sealing ring under the nut of the clutch of the electric head, which needs to be replaced with a new skeleton sealing ring during disassembly. The slotted nut cannot be removed, so the aging skeleton sealing ring cannot be replaced, resulting in sealing failure of the electric head and oil leakage. Therefore, the skeleton sealing ring needs to be replaced regularly.

[0042] During the periodic disassembly and replacement of the skeleton seal ring of a nuclear-grade electric motor, the clutch nut of the electric motor needs to be removed from the worm gear before the seal ring can be replaced. The clutch nut of the electric motor is a slotted nut, located deep at the bottom of the clutch housing. There is a seal ring below the slotted nut, and the worm gear needs to be fixed when removing and installing the nut. Some related technologies propose using a slotted socket wrench to directly fit onto the nut. However, the socket wrench's fitting hole is a blind hole, and the socket wrench obstructs the worm gear, preventing the worm gear from being fixed by the wrench. This causes the worm gear to rotate with the socket wrench, resulting in the worm gear... A wrench cannot secure the worm gear when removing the nut, or a hammer can be used to directly strike the nut, which can easily damage the housing. This shows that the disassembly and assembly of slotted nuts is cumbersome and difficult. Improper disassembly and assembly methods can not only prevent the nut from being removed but may also damage the worm gear and the nut. Since electric actuators are mostly imported equipment, and spare parts are also imported and expensive, the disassembly and assembly of mechanical parts during the electric actuator disassembly process must be done with extreme care, which increases the difficulty and risk of operation. For example, damage to the clutch housing or scratches and bumps to parts can cause irreparable damage to the equipment.

[0043] This application provides an electric head disassembly and assembly tool, which includes a worm gear fixing component and a nut fixing component. The nut fixing component has a connecting through hole in its connector. During the disassembly of the slotted nut, the worm gear passes through the connecting through hole, and the engaging part of the connector engages with the groove on the nut, thus fixing the connector and the nut relatively. The connecting through hole allows the worm gear to be exposed, and the fixing part of the worm gear fixing component can be sleeved on the worm gear. The worm gear passes through the through hole of the fixing part, and the limiting structure of the fixing part cooperates with the worm gear, thereby preventing the fixing part from rotating relative to the worm gear around its axis. Then, personnel or equipment can fix the worm gear. The first operating component of the worm gear fixing component is fixed, and the fixing component and worm gear are fixed. Then, personnel or equipment drive the second operating component of the nut fixing component to rotate, thereby removing the nut from the worm gear or installing the nut on the worm gear. The disassembly and assembly of this slotted nut is simple, reducing the difficulty of disassembly and assembly, which is conducive to improving the replacement efficiency of the skeleton seal ring and the disassembly efficiency of the electric head. In addition, the fixing component and the connecting component are both sleeved on the outside of the worm gear, which reduces the risk of contact between the fixing component and the connecting component and other components of the electric head, which helps to reduce the risk of damage to the electric head components and greatly improves the reliability and convenience of the disassembly and assembly of the electric head.

[0044] The following combination Figures 1-7 The contents shown illustrate the electric head disassembly and assembly tool 100 of this application embodiment.

[0045] like Figures 1-3As shown, in some embodiments, the electric head dismounting tool 100 comprises a worm fixing component 10 and a nut connecting component 20, the worm fixing component 10 comprises a first operating member 11 and a fixing member 12, the fixing member 12 is provided with a through hole 121 for the worm to pass through, the hole wall of the through hole 121 is provided with a limiting structure 122, the limiting structure 122 is used for cooperating with the worm to limit the rotation of the fixing member 12 relative to the worm around the axis of the worm; the first operating member 11 is connected with the fixing member 12, and the first operating member 11 is used for being operated by a person or equipment to limit the rotation of the fixing member 12; the nut connecting component 20 comprises a second operating member 21 and a connecting member 22, the connecting member 22 is provided with a connecting through hole 2201 for the worm to pass through, and the connecting member 22 is provided with a clamping member 23 for being clamped in the groove of the nut; the second operating member 21 is connected with the connecting member 22, and the second operating member 21 is used for being operated by a person or equipment to drive the connecting member 22 to rotate around the axis of the connecting through hole 2201.

[0046] The worm fixing component 10 can refer to a component for fixing the worm, and the worm fixing component 10 comprises the first operating member 11 and the fixing member 12. The fixing member 12 can refer to a component connected with the worm to fix the worm.

[0047] The fixing member 12 is in a hollow cylinder shape, and the inner hole of the fixing member 12 forms the through hole 121. The through hole 121 can be a through hole or a blind hole, and the shape of the through hole 121 can be various, such as an oval shape, a triangular shape, etc. The shape of the fixing member 12 can be various, such as a cylinder, a prism cylinder, etc. The material of the fixing member 12 can be metal, plastic, etc.

[0048] The through hole 121 is used for the worm to pass through. In the state that the worm passes through the through hole 121, the limiting structure 122 of the hole wall of the through hole 121 abuts against the outer peripheral wall of the worm, so that the fixing member 12 cannot rotate relative to the worm around the axis of the worm.

[0049] In some examples, the outer peripheral wall of the worm is provided with a groove, and the limiting structure 122 is provided with a protrusion. The protrusion is inserted into the groove, so that the fixing member 12 cannot rotate relative to the worm around the axis of the worm.

[0050] In some examples, the outer peripheral wall of the worm is provided with a plane, and the limiting structure 122 is also a plane. The two parallel planes abut against each other, so that the fixing member 12 cannot rotate relative to the worm around the axis of the worm. Of course, in other examples, other structures can also be used.

[0051] The first operation member 11 can be a component connected with the fixing member 12. The first operation member 11 and the fixing member 12 can be connected by adhesion, clamping, adhesion or one-piece forming (for example, injection molding, etc.). The material of the first operation member 11 can be metal, plastic, etc. After the first operation member 11 is connected with the fixing member 12, the first operation member 11 is fixed and cannot rotate, and the fixing member 12 and the worm also cannot rotate, so that the fixing of the worm is realized. The first operation member 11 can be conveniently held by personnel or connected with equipment to facilitate the fixing of the worm. The personnel holding the first operation member 11 can block the rotation of the fixing member 12 and the worm, thereby realizing manual blocking of the rotation of the fixing member 12 and the worm. The equipment is connected with the first operation member 11 to block the rotation of the fixing member 12 and the worm, thereby realizing mechanical blocking of the rotation of the fixing member 12 and the worm.

[0052] The nut connecting member 20 can be a component for fixing and dismounting a nut. The nut connecting member 20 includes a second operation member 21 and a connecting member 22. The connecting member 22 can be a component connected with the nut to dismount the nut.

[0053] The connecting member 22 is in a hollow cylindrical shape. An inner hole of the connecting member 22 forms a connecting through hole 2201. The connecting through hole 2201 penetrates the connecting member 22 along an axis of the connecting member 22. The connecting through hole 2201 can have various shapes, such as an oval shape, a triangular shape, etc. The connecting member 22 can have various shapes, such as a cylindrical shape, a prismatic cylindrical shape, etc. The material of the connecting member 22 can be metal, plastic, etc.

[0054] The connecting member 22 is provided with a clamping member 23. After the worm is arranged in the connecting through hole 2201, the clamping member 23 can be inserted into a groove on an outer periphery of the nut, so that the connecting member 22 is fixed with the nut and cannot rotate relative to the nut. The rotation of the connecting member 22 can drive the nut to rotate.

[0055] In some examples, the clamping member 23 can be a protruding structure formed by a hole wall of the connecting through hole 2201 or a protruding structure formed by an end face of the connecting member 22. Of course, in other examples, the clamping member 23 can also be other structures.

[0056] The number of the clamping members 23 can be one or more. The number of the clamping members 23 can be designed according to the number of grooves on the nut.

[0057] The second operation member 21 can be a component connected with the connecting member 22. The second operation member 21 and the connecting member 22 can be connected by adhesion, clamping, adhesion, etc. The material of the second operation member 21 can be metal, plastic, etc. After the second operation member 21 is connected with the connecting member 22, the rotation of the second operation member 21 around the axis of the connecting through hole 2201 (which can be referred to as the rotation axis of the connecting member 22) can drive the connecting member 22 to rotate. Figure 1When the straight line M in the figure rotates, the connecting member 22 and the nut also rotate, and thus the nut can be detached from the worm in the case of a fixed worm; the second operating member 21 can be conveniently held by personnel or connected to equipment to facilitate the detachment of the nut.

[0058] The personnel hold the second operating member 21 to drive the connecting member 22 to rotate, thereby manually driving the connecting member 22 to rotate; the equipment is connected to the second operating member 21 to drive the connecting member 22 to rotate, thereby mechanically driving the connecting member 22 to rotate.

[0059] In use, the connecting through hole 2201 of the connecting member 22 is sleeved outside the worm, the clamping member 23 is clamped with the groove on the nut, so that the nut and the connecting member 22 are relatively fixed, then the through hole 121 of the fixing member 12 is sleeved on the end of the worm away from the nut, after that, the personnel or equipment rotates the second operating member 21 while fixing the first operating member 11, the first operating member 11 is fixed, the fixing member 12 is fixed with the worm, so that when the second operating member 21 rotates, the nut rotates, and the worm does not rotate, thereby detaching the nut from the worm or installing the nut on the worm; during the operation, the connecting through hole 2201 is provided, so that the worm is exposed, the through hole 121 of the fixing member 12 is sleeved on the worm, the limiting structure 122 of the fixing member 12 is matched with the worm, so that the fixing member 12 cannot rotate relative to the worm around the axis of the worm, the relative fixation of the fixing member 12 and the worm is achieved, and then the first operating member 11 can be used to fix the worm, thereby achieving the disassembly and assembly of the slotted nut; in addition, the disassembly and assembly of the slotted nut can be achieved by fixing the first operating member 11 and rotating the second operating member 21, the disassembly operation of the slotted nut is simple, the difficulty of disassembly and assembly of the slotted nut is reduced, and the replacement efficiency of the skeleton seal ring and the disassembly efficiency of the electric head are improved.

[0060] In some embodiments, the electric head disassembly tool 100 greatly reduces the on-site disassembly work, greatly improves the work efficiency, improves the maintenance process technology level, ensures the reliability of the installation of the seal ring, and reduces the phenomenon of oil leakage after the equipment is put into operation. Since the electric head disassembly tool 100 is put into operation in the power station, the labor intensity of the personnel who disassemble the electric head on site is greatly reduced, the phenomenon of equipment damage and the resulting rework events are reduced, the cost is saved, the spare part consumption rate is reduced, the seal function of the seal ring is completely achieved after disassembly and maintenance, the phenomenon of oil leakage after the equipment is put into operation is greatly reduced, and the reliability of the unit is improved.

[0061] In some embodiments, the engaging member 23 is connected to one end of the connecting member 22 along the axial direction of the connecting through hole 2201.

[0062] The engaging member 23 is fixed to one end of the connecting member 22 along the axial direction of the connecting through hole 2201, and the engaging member 23 protrudes from the end surface of the connecting member 22; the axial direction of the connecting through hole 2201 can be referred to as the direction indicated by the arrow Z in Figure 1 When the worm is in place penetrating the connecting through hole 2201, the engaging member 23 and the connecting member 22 are arranged along the axis of the worm, and there is no connecting member 22 between the recess of the nut and the housing of the clutch, which can reduce the risk of the connecting member 22 contacting the housing and the nut, and can reduce the risk of damage to the housing and the nut.

[0063] In some embodiments, the engaging member 23 is arranged in the connecting through hole 2201 and connected to the hole wall of the connecting through hole 2201.

[0064] The engaging member 23 can be a protrusion formed by the hole wall of the connecting through hole 2201; when the worm is in place penetrating the connecting through hole 2201, the engaging member 23 is clamped into the recess of the nut, and the recess of the nut is also sleeved with the connecting member 22, and in the process of rotating the connecting member 22, the hole wall of the connecting through hole 2201 can better support the engaging member 23, and the structural strength of the nut connecting component 20 at the recess of the nut is good, which is conducive to improving the service life of the nut connecting component 20.

[0065] In some embodiments, referring to Figure 3 The connecting member 22 includes a first connecting part 221 and a second connecting part 222 connected to each other, the first connecting part 221 and the second connecting part 222 are respectively provided with a first connecting sub-hole 2211 and a second connecting sub-hole 2221, the first connecting sub-hole 2211 and the second connecting sub-hole 2221 are arranged along the axis of the connecting through hole 2201 and are connected in communication, the first connecting sub-hole 2211 and the second connecting sub-hole 2221 together form the connecting through hole 2201, the hole diameter D1 of the first connecting sub-hole 2211 is greater than the hole diameter D2 of the second connecting sub-hole 2221, the engaging member 23 is connected to the second connecting part 222, and the first connecting sub-hole 2211 is used to accommodate at least part of the fixing member 12.

[0066] The connecting through hole 2201 is a stepped circular hole, the section with smaller size is the second connecting sub-hole 2221, and the section with larger size is the first connecting sub-hole 2211. The part of the connecting piece 22 provided with the first connecting sub-hole 2211 is the first connecting part 221, and the part of the connecting piece 22 provided with the second connecting sub-hole 2221 is the second connecting part 222. The clamping piece 23 is connected with the second connecting part 222. After the worm is inserted into the connecting through hole 2201, the second connecting part 222 is arranged close to the nut, the first connecting part 221 is arranged away from the nut, when the fixing piece 12 is sleeved on the worm, a part of the fixing piece 12 can be inserted into the first connecting sub-hole 2211, and another part is exposed outside the first connecting sub-hole 2211, or the entire fixing piece 12 is located in the first connecting sub-hole 2211. The outer diameter of the part of the fixing piece 12 located in the first connecting sub-hole 2211 is smaller than the inner diameter of the first connecting sub-hole 2211, so that the fixing piece 12 can be located in the first connecting sub-hole 2211.

[0067] By adopting the technical scheme of the embodiment, the hole diameter D1 of the first connecting sub-hole 2211 is larger than the hole diameter D2 of the second connecting sub-hole 2221, the first connecting sub-hole 2211 can leave space for accommodating the fixing piece 12, the limiting structure 122 of the fixing piece 12 can abut against the outer peripheral wall of the worm located in the connecting through hole 2201, which is beneficial to increase the abutting area of the limiting structure 122 of the fixing piece 12 and the worm, and is beneficial to improve the stability and reliability of the fixing of the worm, and can also be applied to the nut dismounting on the relatively short worm. In addition, the hole diameter D2 of the second connecting sub-hole 2221 is small, the gap between the worm and the second connecting sub-hole 2221 is small, which is beneficial to improve the fixing reliability of the connecting piece 22 and the nut, and is also beneficial to reduce the size of the second connecting part 222, reduce the risk of interference between the second connecting part 222 and other components, and reduce the damage risk of the electric head components.

[0068] In some embodiments, the outer diameter D3 of the first connecting part 221 is larger than the outer diameter D4 of the second connecting part 222.

[0069] The connecting piece 22 is a stepped hollow circular shaft structure, the section with smaller outer diameter is the second connecting part 222, and the section with larger outer diameter is the first connecting part 221.

[0070] By adopting the technical scheme of the embodiment, the outer diameter D3 of the first connecting part 221 and the outer diameter D4 of the second connecting part 222 are arranged and distributed in adaptation with the hole diameter D2 of the first connecting sub-hole 2211 and the hole diameter D2 of the second connecting sub-hole 2221, which is beneficial to reduce the size of the connecting piece 22, reduce the risk of interference between the connecting piece 22 and other components, and reduce the damage risk of the electric head components.

[0071] In some embodiments, the length direction of the second operation member 21 intersects with the axis of the connecting through hole 2201, and the connecting member 22 is located in the middle of the second operation member 21 along the length direction.

[0072] The second operation member 21 can be a long rod member, and the length direction of the second operation member 21 can be referred to as the X direction. Figure 1 The length direction of the second operation member 21 intersects with the axis of the connecting through hole 2201, and the included angle between the length direction of the second operation member 21 and the axis of the connecting through hole 2201 can be an acute angle, an obtuse angle, or a right angle.

[0073] By adopting the technical scheme of this embodiment, the length direction of the second operation member 21 intersects with the axis of the connecting through hole 2201, the connecting member 22 is located in the middle of the second operation member 21 along the length direction, and the second operation member 21 is distributed on the opposite sides of the connecting member 22 perpendicular to the axis of the connecting through hole 2201. On the one hand, the second operation member 21 and the connecting through hole 2201 are staggered, reducing the risk of the second operation member 21 blocking the connecting through hole 2201, to facilitate the subsequent fixed member 12 and the worm being fixedly connected. On the other hand, the second operation member 21 can provide a force point on the opposite sides of the connecting member 22 perpendicular to the axis of the connecting through hole 2201, and personnel or equipment can more time-saving and labor-saving rotate the connecting member 22.

[0074] In some embodiments, the number of connecting members 22 is multiple, the multiple connecting members 22 are connected with the second operation member 21, the multiple connecting members 22 are arranged at intervals along the length direction of the second operation member 21, and the hole diameters of the connecting through holes 2201 of at least two connecting members 22 are different.

[0075] The second operation member 21 is integrated with the multiple connecting members 22, and the multiple connecting members 22 are arranged at intervals along the length direction of the second operation member 21, so that the multiple connecting members 22 are staggered, reducing the risk of the connecting through hole 2201 being blocked or blocked, and facilitating the fixed member 12 and the worm being fixedly connected.

[0076] The hole diameters of the connecting through holes 2201 of at least two connecting members 22 are different; among the two connecting members 22, the hole diameter of the connecting through hole 2201 of one connecting member 22 is different from that of the other connecting member 22; among more than three connecting members 22, the hole diameters of the connecting through holes 2201 of two connecting members 22 can be different, or the hole diameters of the connecting through holes 2201 of all connecting members 22 can be different.

[0077] In nuclear power plants, the types of electric heads are various, the diameters of the worms in different electric heads are different, and the hole diameters of the connecting through holes 2201 are also different, which can meet the disassembly needs of different electric heads.

[0078] In some examples, since the second connecting sub-hole 2221 is matched with the outer diameter of the worm, the different hole diameters of the connecting through-hole 2201 can mean that the hole diameter D2 of the second connecting sub-hole 2221 is different, and the hole diameter D1 of the first connecting sub-hole 2211 can be the same or different.

[0079] By adopting the technical scheme of this embodiment, the different hole diameters of the connecting through-hole 2201 of the at least two connecting members 22 enable different connecting members 22 to meet the disassembly and assembly requirements of slotted nuts of different types of electric heads. In addition, the plurality of connecting members 22 are integrated on the second operating member 21, and the nut connecting component 20 is a whole component, thereby reducing the risk of component dispersion and loss, facilitating storage of the nut connecting component 20, and facilitating on-site direct use, thereby achieving convenient disassembly and assembly of slotted nuts in a repair workshop.

[0080] In some embodiments, the length direction of the second operating member 21 is perpendicular to the axis of the connecting through-hole 2201, and the number of the connecting members 22 is two. The two connecting members 22 are located at the middle of the second operating member 21 along the length direction and are arranged at intervals along the length direction of the second operating member 21. Rotating the connecting members 22 by personnel or equipment is the most labor-saving and labor-saving. In addition, the structure of the nut connecting component 20 is simple, the processing and manufacturing are convenient, and the manufacturing cost is low.

[0081] In some embodiments, referring to Figure 4 and Figure 5 the hole wall of the through hole 121 includes a flat surface, the flat surface forms a limiting structure 122, the outer peripheral surface of the worm is provided with a flat surface, and the flat surface on the worm abuts against the flat surface in the through hole 121. The circumferential positioning of the fixing member 12 and the worm can be achieved, so that the fixing member 12 cannot rotate relative to the worm.

[0082] In some examples, the number of flat surfaces is multiple, for example, two, three, or four, etc. For example, the number of flat surfaces is two, and the two flat surfaces are located at opposite sides of the through hole 121. The other opposite sides of the through hole 121 are arc surfaces.

[0083] In some embodiments, referring to Figure 4 and Figure 6 the hole wall of the through hole 121 is provided with a clamping protrusion for clamping the clamping groove of the worm, and the clamping protrusion forms a limiting structure 122. The worm is usually provided with a key groove, which is the clamping groove. By inserting the clamping protrusion into the clamping groove, the circumferential positioning of the fixing member 12 and the worm can be achieved, so that the fixing member 12 cannot rotate relative to the worm.

[0084] In some embodiments, referring to Figure 7As shown, the hole wall of the through hole 121 is provided with a clamping groove for clamping the clamping protrusion of the worm, and the clamping groove forms a limiting structure 122; the outer circumferential surface of the worm is provided with a protrusion or a key installed on the outer circumferential surface of the worm, and the protrusion or the key is the clamping protrusion. By inserting the clamping protrusion into the clamping groove, the circumferential positioning of the fixing part 12 and the worm can be realized, so that the fixing part 12 cannot rotate relative to the worm.

[0085] In some embodiments, referring to Figures 4-6 As shown, the number of the fixing parts 12 is multiple, the multiple fixing parts 12 are connected with the first operating part 11, and the limiting structures 122 of at least two fixing parts 12 are different.

[0086] The first operating part 11 is integrated with multiple fixing parts 12, the limiting structures 122 of at least two fixing parts 12 are different, the number of the electric heads in the nuclear power station is large, and the types of the electric heads are different. In some electric heads, the diameters of the worms are the same, but the shapes of the outer circumferential surfaces of the worms are different. For example, the outer circumferential surfaces of some worms are provided with clamping grooves, and the limiting structures 122 matched with the clamping grooves are clamping protrusions. Or, the outer circumferential surfaces of some worms are provided with planes, and the limiting structures 122 matched with the planes are also planes. The limiting structures 122 of different fixing parts 12 are different, which can meet the fixing requirements of different worms and the disassembly requirements of different types of electric heads. In addition, the multiple fixing parts 12 are integrated on the second operating part 21, and the worm fixing part 10 is an integral part, which reduces the risk of part dispersion and loss, facilitates the storage of the worm fixing part 10, and is convenient for direct use on site, so that the slotting nut can be conveniently disassembled and assembled in the repair workshop.

[0087] In some embodiments, referring to Figures 4-6 As shown, the number of the fixing parts 12 is multiple, the multiple fixing parts 12 are connected with the first operating part 11, and the hole diameters D5 of the through holes 121 of at least two fixing parts are different.

[0088] The first operating part 11 is integrated with multiple fixing parts 12, the hole diameters D5 of the through holes 121 of at least two fixing parts 12 are different; in two fixing parts 12, the hole diameter D5 of the through hole 121 of one fixing part 12 is different from that of the other fixing part 12; in more than three fixing parts 12, the hole diameters D5 of the through holes 121 of two fixing parts 12 can be different, or the hole diameters D5 of the through holes 121 of all fixing parts 12 can be different. The hole diameters D5 of the through holes 121 of different fixing parts 12 are different, which can meet the disassembly requirements of different electric heads.

[0089] In some embodiments, the number of the fixing members 12 is multiple, the multiple fixing members 12 are connected with the first operating member 11, the limiting structures 122 of at least two fixing members 12 are different, and the hole diameters D5 of the through holes 121 of at least two fixing members 12 are different, so as to meet the disassembly requirements of different types of electric heads.

[0090] In some embodiments, the first operating member 11 comprises multiple operating rods 111 arranged in intersection, and at least one end of at least one operating rod 111 away from the intersection position of the multiple operating rods 111 is provided with a fixing member 12.

[0091] The first operating member 11 comprises multiple operating rods 111 arranged in intersection and connected with each other. The multiple operating rods 111 can be connected together by welding, bonding, clamping or one-piece forming (such as injection molding, etc.), and the multiple operating rods 111 can intersect at the same position, or the intersection positions of different operating rods 111 can be the same or different. The fixing member 12 is fixed to the end of the operating rod 111, and there is a certain distance between the fixing member 12 and the intersection position of the multiple operating rods 111, so that the fixing member 12 is located at the edge of the entire first operating member 11, thereby facilitating the fixing member 12 to be sleeved on the worm, facilitating the installation of the fixing member 12, and in addition, the fixing member 12 is located at the end of the operating rod 111, so that the other operating rod 111 can be located on the opposite side of the fixing member 12, thereby providing a force point for personnel or equipment, and facilitating the fixing of the fixing member 12.

[0092] One end of the operating rod 111 is connected with the fixing member 12, or both ends of one operating rod 111 are connected with the fixing member 12.

[0093] In the multiple operating rods 111, one or more operating rods 111 can be connected with the fixing member 12, which can be set according to actual detection needs.

[0094] In some embodiments, the number of the operating rods 111 is two, and the two operating rods 111 are arranged perpendicularly, at least one end of one operating rod 111 is provided with the fixing member 12, and at least one end of the other operating rod 111 is provided with the fixing member 12.

[0095] The two operating rods 111 form a "cross" structure, and the two connecting members 22 are connected with the fixing members 12. Each operating rod 111 can be connected with one or two fixing members 12, which can be set according to actual detection needs. The two operating rods 111 form a "cross" structure, and in operation, the fixing member 12 at one end of one operating rod 111 can be sleeved on the fixed worm, and then personnel or equipment can fix the two ends of the other operating rod 111, so as to block the rotation of the worm, save time and labor, and the operation is simple.

[0096] In some examples, the second operating member 21 is an operating rod 111, the middle part of the operating rod 111 is welded with two connecting members 22, the two connecting members 22 are arranged at intervals along the length direction of the operating rod 111, the hole diameters of the connecting through holes 2201 of the two connecting members 22 are different, the first operating member includes two operating rods 111, the two operating rods 111 are welded together vertically, the two ends of one of the operating rods 111 are connected with two fixing members 12, the hole diameters D5 of the penetrating holes 121 of the two fixing members 12 are the same, but the limiting structures 122 are different, the limiting structure 122 of one of the fixing members 12 is a clamping protrusion, and the limiting structure 122 of the other connecting member 22 is a plane; one end of the other operating rod 111 is connected with a fixing member 12, the hole diameter D5 of the penetrating hole 121 of the fixing member 12 is different from that of the above-mentioned two fixing members 12, and the limiting structure 122 of the fixing member 12 is a plane.

[0097] In some examples, according to the size of the mechanical parts inside the electric head device, a matched electric head disassembling tool (for example, a matched limiting structure 122, a reasonable size of the hole diameter of the penetrating hole 121 and the connecting through hole 2201, etc.) is reasonably designed, the labor intensity of the workers can be reduced by using the electric head disassembling tool, and the efficiency of the disassembly of the electric head in the nuclear power station can be improved.

[0098] In some examples, the electric head can be simply and conveniently disassembled by using the electric head disassembling tool, the problem of the overhaul of the nuclear power station can be solved, a matched electric head disassembling tool is designed according to the needs of disassembling the electric head and the structure of the electric head, and the electric head disassembling tool is optimized and integrated, which can meet the disassembly needs of most electric heads in the nuclear power station, and the use of the integrated electric head disassembling tool is more simple and convenient.

[0099] In some examples, the first operating member 11 adopts a cross head welding mode and a double head welded fixing member 12, the worm fixing part 10 is an integral structure, is not easy to lose scattered parts, is convenient for storage and use in the overhaul workshop, and the detection efficiency is improved. In addition, the electric head disassembling tool is simple to process and cheap in price, and the procurement cost is saved; and the operating rod 111 of the first operating member 11 is also convenient for subsequent addition of a new fixing member 12 to meet the disassembly needs of subsequent new models of electric heads, the electric head disassembling tool has strong expandability and strong practicality.

[0100] In some examples, the first operating member 11, the second operating member 21, the fixing member 12 and the connecting member 22 can adopt alloy tool steel, so that the electric head disassembling tool can be rust-free during long-term storage or use, can withstand general external force knocking without breaking and deforming, and is beneficial to improving the service life of the electric head disassembling tool.

[0101] The above description of the various embodiments tends to emphasize differences between the various embodiments, and the same or similar parts can be mutually referred to for brevity, which will not be repeated herein.

[0102] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An electric head dismounting tool characterized by comprising: The application relates to a worm fixing component and a nut connecting component. The worm fixing component comprises a first operating member and a fixing member, the fixing member is internally provided with a through hole for the worm to pass through, the hole wall of the through hole is provided with a limiting structure, the limiting structure is used for cooperating with the worm to limit the rotation of the fixing member relative to the axis of the worm, the first operating member is connected with the fixing member, and the first operating member is used for being operated by personnel or equipment to limit the rotation of the fixing member. The nut connecting component comprises a second operating member and a connecting member, the connecting member is provided with a connecting through hole for the worm to pass through, the connecting member is provided with a clamping member used for being clamped in the groove of the nut, the second operating member is connected with the connecting member, and the second operating member is used for being operated by personnel or equipment to drive the connecting member to rotate around the axis of the connecting through hole.

2. The power head tool of claim 1, wherein: The clamping member is connected to one end of the connecting member along the axial direction of the connecting through hole; or the clamping member is arranged in the connecting through hole and connected with the hole wall of the connecting through hole.

3. The power head tool of claim 1, wherein: The connecting member comprises a first connecting part and a second connecting part connected with each other, the first connecting part and the second connecting part are respectively provided with a first connecting sub-hole and a second connecting sub-hole, the first connecting sub-hole and the second connecting sub-hole are arranged along the axis of the connecting through hole and are connected with each other, the first connecting sub-hole and the second connecting sub-hole jointly form the connecting through hole, the hole diameter of the first connecting sub-hole is larger than the hole diameter of the second connecting sub-hole, the clamping member is connected to the second connecting part, and the first connecting sub-hole is used for accommodating at least part of the fixing member.

4. The power head tool of claim 3, wherein: The outer diameter of the first connecting part is larger than the outer diameter of the second connecting part.

5. The power head tool of any one of claims 1-4, wherein: The length direction of the second operating member intersects with the axis of the connecting through hole, and the connecting member is located at the middle part of the second operating member along the length direction.

6. The power head tool of any one of claims 1-4, wherein: The number of the connecting members is plural, the plural connecting members are connected with the second operating member, the plural connecting members are arranged at intervals along the length direction of the second operating member, and the hole diameters of the connecting through holes of at least two connecting members are different.

7. The electric head tool according to any one of claims 1 to 4, wherein: the hole wall of the through hole is provided with a clamping protrusion used for clamping the clamping groove of the worm, and the clamping protrusion forms the limiting structure; alternatively, the hole wall of the through hole comprises a plane, and the plane forms the limiting structure; alternatively, the hole wall of the through hole is provided with a clamping groove used for clamping the clamping protrusion of the worm, and the clamping groove forms the limiting structure.

8. The power head tool of any one of claims 1-4, wherein: The number of the fixing members is plural, the plural fixing members are connected with the first operating member, and the limiting structures of at least two fixing members are different.

9. The power head tool of any one of claims 1-4, wherein: The first operating member comprises plural operating rods arranged in intersection, and at least one end of at least one operating rod away from the intersection position of the plural operating rods is provided with the fixing member.

10. The power head tool of claim 9, wherein: The number of the operating rods is two, and the two operating rods are arranged in perpendicular, at least one end of one of the two operating rods is provided with the fixing member, and at least one end of the other operating rod is provided with the fixing member.

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