Positioning device for cylinder hoisting

Abstract

The invention provides a positioning device for barrel hoisting, and relates to the technical field of barrel hoisting. The positioning device for barrel hoisting comprises a bottom supporting assembly, a guide rail and a guide assembly. The bottom supporting assembly is used for being fixed to the peripheral side of a top opening of a container. The guide rail is erected on the bottom supporting assembly. The guide assembly is installed on the peripheral wall of the to-be-hoisted barrel and used for abutting against one side of the guide rail when the projection of the barrel on the plane where the top of the container is located is located in the opening. According to the positioning device for barrel hoisting, the guide rail is fixed to the peripheral side of the top opening of the container through the bottom supporting assembly, then the barrel is aligned to the top opening of the container through the abutting relation between the guide assembly and the guide rail, and therefore positioning of the barrel is achieved; and the barrel can be supported and guided through sliding of the guide assembly on one side of the guide rail, so that the barrel is accurately guided into the container, collision between the barrel and the container is effectively prevented, and the barrel assembling quality is effectively guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of cylinder hoisting, in particular to a positioning device for cylinder hoisting. Background Art

[0002] During the construction and installation phase of a nuclear power plant and the subsequent operation and maintenance phase, it is necessary to hoist the core package and other cylinders of the reactor coolant pump into large containers such as the pump casing of the reactor coolant pump for assembly. Figure 1 As shown, the structure of the pump casing of the reactor coolant pump is as follows Figure 2 When the core pack 1 is hoisted in the pump casing 2, the core pack 1 needs to be vertically installed into the pump casing 2 from the top opening of the pump casing 2.

[0003] Since there is usually only a 3mm gap between the outer wall of the cylinder and the inner wall of the large container, it is difficult for the cylinder to accurately enter the large container during the lifting process. It is very easy to collide with the large container, causing irreversible damage to the cylinder and affecting the assembly quality of the cylinder. Summary of the invention

[0004] The purpose of the present invention is to provide a positioning device for cylinder hoisting, so as to alleviate the technical problem existing in the prior art that the gap between the cylinder such as the reactor coolant pump core package and the large container such as the reactor coolant pump casing is small, and when the cylinder is hoisted into the large container, it is very easy to collide with the large container, causing irreversible damage to the cylinder and affecting the assembly quality of the cylinder.

[0005] In a first aspect, the present invention provides a positioning device for cylinder hoisting, comprising a bottom support assembly, a guide rail and a guide assembly;

[0006] The bottom support assembly is used to be fixed on the peripheral side of the top opening of the container, and the guide rail is erected on the bottom support assembly;

[0007] The guide assembly is installed on the outer peripheral wall of the cylinder to be hoisted, and is used to abut against one side of the guide rail when the projection of the cylinder on the plane where the top of the container is located is located in the opening.

[0008] In an optional embodiment, recessed portions are respectively provided on both sides of the bottom support assembly, the bottom support assembly is used to be fixed between two adjacent bolts on the peripheral side of the top opening of the container, and the recessed portion is used to abut against the outer peripheral wall of the bolt adjacent thereto.

[0009] In an optional embodiment, an auxiliary support assembly is also included;

[0010] The auxiliary support assembly is installed on a side of the guide rail facing away from the guide assembly, and the auxiliary support assembly is used to be connected with the bolts adjacent to it.

[0011] In an optional embodiment, the auxiliary support assembly includes a locking plate and a fixing plate;

[0012] The fixing plate is fixedly connected to the guide rail, the locking plate is detachably connected to the fixing plate, and the bolt adjacent to the auxiliary support assembly is detachably connected to the locking plate.

[0013] In an optional embodiment, the bottom support assembly includes a bottom plate and a movable plate;

[0014] The bottom plate is arc-shaped and extends along the circumference of the top opening of the container, and the guide rail is fixed on the bottom plate;

[0015] The movable plates are respectively disposed at both ends of the bottom plate, the recessed portion is disposed on the movable plates, and the movable plates can move along the extending direction of the bottom plate and are fixedly connected to the bottom plate after movement.

[0016] In an optional embodiment, the bottom support assembly further includes a connecting structure, and the movable plate is connected to the bottom plate via the connecting structure.

[0017] In an optional embodiment, the connection structure includes a universal joint bolt and a fixing bolt, one end of the universal joint bolt is fixedly connected to the base plate, and the other end is threadedly connected to the movable plate;

[0018] The fixing bolts are used to be connected between the movable plate and the bottom plate after the movable plate moves along the extending direction of the bottom plate.

[0019] In an optional embodiment, the bottom plate includes a plurality of arc-shaped plates, the plurality of arc-shaped plates are sequentially distributed along the circumference of the top opening of the container, and any group of two adjacent arc-shaped plates are detachably connected.

[0020] In an optional embodiment, a blocking member is fixed to a side of the bottom plate facing away from the guide rail, and the blocking member is used to be fixed in a threaded hole between two adjacent bolts of the container.

[0021] In an optional embodiment, the guide assembly includes an annular fixed wheel and an annular rotating wheel;

[0022] The fixed wheel is used to be sleeved and fixed on the radial tube on the outer peripheral wall of the cylinder to be hoisted, the rotating wheel is sleeved outside the fixed wheel and can rotate outside the fixed wheel, and the rotating wheel is used to abut against the guide rail.

[0023] The positioning device for cylinder hoisting provided by the present invention comprises a bottom support assembly, a guide rail and a guide assembly; the bottom support assembly is used to be fixed on the peripheral side of the top opening of the container, and the guide rail is erected on the bottom support assembly; the guide assembly is installed on the outer peripheral wall of the cylinder to be hoisted, and the guide assembly is used to abut against one side of the guide rail when the projection of the cylinder on the plane where the top of the container is located is located in the opening. The positioning device for cylinder hoisting provided by the present invention is used to position and guide the process of hoisting a large cylinder into a large container, such as the core package of a reactor coolant pump, and the large container is such as the pump casing of a reactor coolant pump. Before hoisting, the guide assembly in the positioning device for cylinder hoisting can be installed on the outer peripheral wall of the cylinder to be hoisted, the bottom support assembly can be fixed on the peripheral side of the top opening of the container, and the guide rail can be erected on the bottom support assembly. It should be noted that before installing the guide assembly and the bottom support assembly, the installation position of the guide assembly on the outer peripheral wall of the cylinder and the installation position of the bottom support assembly on the peripheral side of the top opening of the container can be selected based on the pre-installed position of the cylinder in the container, the size of the guide assembly and the size of the guide rail, so that when the guide assembly abuts against one side of the guide rail on the bottom support assembly, the projection of the cylinder on the plane where the top of the container is located is accurately located in the opening. After completing the installation process of the guide assembly and the bottom support assembly, place the cylinder above the top opening of the container, and abut the guide assembly against one side of the guide rail on the bottom support assembly, so that the cylinder can be aligned with the opening of the container (that is, the projection of the cylinder on the plane where the top of the container is located is located in the opening). At this time, the cylinder is accurately located above its pre-installed position in the container, and the cylinder can be vertically hoisted into the container to achieve the precise hoisting process of the cylinder without causing the cylinder to collide with the container. It should be noted that during the vertical lifting of the cylinder, the guide assembly will slide along the guide rail on one side of the guide rail. At this time, the guide rail can support and guide the lifting process of the cylinder, effectively preventing the cylinder from shifting, thereby effectively preventing the cylinder from colliding with the container and causing damage, thereby improving the assembly quality of the cylinder.

[0024] Compared with the prior art, the positioning device for cylinder hoisting provided by the present invention fixes the guide rail to the surrounding side of the top opening of the container through the bottom support assembly, and then utilizes the abutment relationship between the guide assembly and the guide rail to align the cylinder with the top opening of the container, thereby realizing the positioning of the cylinder; during the cylinder hoisting process, the guide assembly can also be utilized to slide on one side of the guide rail to support and guide the cylinder, thereby accurately introducing the cylinder into the container, effectively preventing the cylinder from colliding with the container, and thereby effectively ensuring the assembly quality of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a structural schematic diagram of a core package of an existing reactor coolant pump;

[0027] Figure 2 It is a structural schematic diagram of a pump casing of an existing reactor coolant pump;

[0028] Figure 3 A schematic diagram of the structure of a positioning device for cylinder hoisting and a pump casing provided in an embodiment of the present invention;

[0029] Figure 4 A schematic diagram of the structure of a cylinder hoisting positioning device, a pump casing, and a core pack provided in an embodiment of the present invention;

[0030] Figure 5 A schematic diagram of the structure of a positioning device for cylinder hoisting provided by an embodiment of the present invention;

[0031] Figure 6 A schematic diagram of the structure of a locking plate provided in an embodiment of the present invention;

[0032] Figure 7 A schematic diagram of the structure of a fixed wheel provided in an embodiment of the present invention;

[0033] Figure 8 A schematic diagram of the structure of a rotating wheel provided in an embodiment of the present invention;

[0034] Fig. 9 A schematic structural diagram of a fixing plate provided in an embodiment of the present invention.

[0035] Icons: 1-core pack; 10-radial tube; 2-pump casing; 20-bolt; 21-threaded hole; 3-bottom support assembly; 30-bottom plate; 300-angle plate; 301-arc plate; 31-movable plate; 310-recessed portion; 32-connecting structure; 320-universal joint bolt; 321-fixing bolt; 33-blocking piece; 4-guide rail; 40-slide groove; 41-guide ramp; 5-guide assembly; 50-fixed wheel; 51-rotating wheel; 6-auxiliary support assembly; 60-locking plate; 600-positioning hole; 61-fixing plate; 62-fastening bolt. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0039] Example:

[0040] like Figure 3 , Figure 4 and Figure 5 As shown, the positioning device for cylinder hoisting provided in this embodiment includes a bottom support assembly 3, a guide rail 4 and a guide assembly 5; the bottom support assembly 3 is used to be fixed on the peripheral side of the top opening of the container, and the guide rail 4 is erected on the bottom support assembly 3; the guide assembly 5 is installed on the outer peripheral wall of the cylinder to be hoisted, and the guide assembly 5 is used to abut against one side of the guide rail 4 when the projection of the cylinder on the plane where the top of the container is located is located in the opening.

[0041] The positioning device for hoisting a cylinder provided in this embodiment is used to position and guide the cylinder when it is hoisted into a container, and is particularly used in the hoisting process between a large cylinder and a large container. Figure 1 and Figure 4 The core package 1 of the reactor coolant pump shown, a large container such as Figure 2 , Figure 3 and Figure 4 The pump housing 2 of the reactor coolant pump shown in the figure. The core package 1 is irregular in shape but its main structure is approximately cylindrical, the main body diameter of the core package 1 is usually 1280 mm, and the total weight of the core package 1 is 4557 kg. The diameter of the pump housing 2 is usually 2400 mm, and the total weight is 35705 kg.

[0042] like Figure 3 and Figure 4As shown, before lifting, the guide assembly 5 in the cylinder lifting positioning device can be installed on the outer peripheral wall of the cylinder to be lifted, the bottom support assembly 3 can be fixed on the peripheral side of the top opening of the container, and the guide rail 4 can be erected on the bottom support assembly 3.

[0043] It should be noted that before installing the guide assembly 5 and the bottom support assembly 3, the installation position of the guide assembly 5 on the outer peripheral wall of the cylinder can be selected based on the pre-installation position of the cylinder in the container, the size of the guide assembly 5 and the size of the guide rail 4, and the installation position of the bottom support assembly 3 on the peripheral side of the top opening of the container can be selected, so that when the guide assembly 5 abuts against one side of the guide rail 4 on the bottom support assembly 3, the projection of the cylinder on the plane where the top of the container is located is accurately located in the opening.

[0044] After completing the installation process of the guide assembly 5 and the bottom support assembly 3, place the cylinder above the top opening of the container, and at the same time, abut the guide assembly 5 against one side of the guide rail 4 on the bottom support assembly 3, so that the cylinder can be aligned with the opening of the container (that is, the projection of the cylinder on the plane where the top of the container is located is located in the opening). At this time, the cylinder is accurately located above its pre-installed position in the container. The cylinder can be vertically lifted into the container to achieve precise lifting of the cylinder without causing collision between the cylinder and the container.

[0045] It should be noted that during the vertical lifting of the cylinder, the guide assembly 5 will slide along the guide rail 4 on one side of the guide rail 4. At this time, the guide rail 4 can support and guide the lifting process of the cylinder, effectively preventing the cylinder from shifting, thereby effectively preventing the cylinder from colliding with the container and causing damage, thereby improving the assembly quality of the cylinder.

[0046] Compared with the prior art, the positioning device for cylinder hoisting provided in this embodiment fixes the guide rail 4 to the surrounding side of the top opening of the container through the bottom support assembly 3, and then utilizes the abutment relationship between the guide assembly 5 and the guide rail 4 to align the cylinder with the top opening of the container, thereby realizing the positioning of the cylinder. During the cylinder hoisting process, the guide assembly 5 can also be used to slide on one side of the guide rail 4 to support and guide the cylinder, so as to accurately introduce the cylinder into the container, effectively prevent the cylinder from colliding with the container, and thus effectively ensure the assembly quality of the cylinder.

[0047] like Figure 2 As shown, when the container is a pump casing 2 of a reactor coolant pump, two groups of bolts are usually erected around the top opening of the container. The two groups of bolts are symmetrically arranged, and each group of bolts includes a plurality of bolts 20 spaced apart along the circumference of the opening; one end of the bolt 20 is fixed to the top opening of the container, and the other end is suspended. Figure 2As shown, a threaded hole 21 is also provided at the interval between the two groups of bolts. The two groups of bolts and the threaded holes 21 around the top opening of the container are used to form a flange structure at the top opening of the container, so as to facilitate the connection between the pump casing 2 and external flanges and other structures. Therefore, the bolts 20 and the threaded holes 21 are both inherent structures on the container.

[0048] Based on the inherent structure of the bolts 20 around the container opening, in order to facilitate the determination of the installation position of the bottom support assembly 3 around the container opening and to improve the installation stability of the bottom support assembly 3, as shown in FIG. Figure 5 As shown, two sides of the bottom support assembly 3 are respectively provided with recessed portions 310, such as Figure 3 and Figure 4 As shown, the bottom support assembly 3 is used to be fixed between two adjacent bolts 20 on the peripheral side of the top opening of the container, and the recessed portion 310 is used to abut against the outer peripheral wall of the bolt 20 adjacent thereto.

[0049] The bottom support assembly 3 can be fixed between two adjacent bolts 20 on the side of the top opening of the container by fasteners such as pins and screws. At this time, the recessed portions 310 on both sides of the bottom support assembly 3 can abut against the bolts 20 on the side of the container opening, thereby positioning and limiting the bottom support assembly 3, effectively improving the installation accuracy and stability of the bottom support assembly 3.

[0050] In order to improve the guiding balance during the cylinder hoisting process, Figure 3 and Figure 4 As shown, a cylinder lifting positioning device can be installed at the intervals on both sides between the two sets of bolts on the container. At this time, the two cylinder lifting positioning devices are also symmetrically distributed on the container, and can guide the two sides of the cylinder respectively, effectively ensuring the movement stability during the cylinder lifting process.

[0051] Furthermore, Figure 3 , Figure 4 and Figure 5 As shown, the cylinder hoisting positioning device provided in this embodiment may also include an auxiliary support assembly 6, which is installed on the side of the guide rail 4 facing away from the guide assembly 5, and the auxiliary support assembly 6 is used to connect with the bolt 20 adjacent thereto.

[0052] When the bottom support assembly 3 is fixed between two adjacent bolts 20 on the peripheral side of the top opening of the container, the auxiliary support assembly 6 on the guide rail 4 can also be connected to the bolts 20 adjacent thereto, so that the bolts 20 can be used to further position and limit the guide rail 4, thereby effectively improving the stability of the guide rail 4, and then improving the support stability of the guide rail 4 on the guide assembly 5, effectively preventing the cylinder from being offset during the lifting process.

[0053] It should be noted that, in order to facilitate the installation and removal of the bolt 20, the top of the bolt 20 is usually provided with a central threaded hole that is threadedly connected to an external tool. Based on this, in order to make full use of the original structure of the bolt 20 to improve the convenience of use of the cylinder hoisting positioning device, the present embodiment preferably has a central threaded hole between the auxiliary support assembly 6 and the adjacent bolt 20. Figure 5 The fastening bolts 62 shown secure the connection.

[0054] To enhance the supporting effect of the auxiliary supporting assembly 6 on the guide rail 4, Figure 5 As shown, the auxiliary support assembly 6 can be installed at a position close to the top of the guide rail 4. At this time, the auxiliary support assembly 6 and the bottom support assembly 3 can cooperate with each other to effectively improve the balance and stability of the guide rail 4.

[0055] It should be noted that, in this embodiment, by installing the auxiliary support assembly 6 on the side of the guide rail 4 facing away from the guide assembly 5, the auxiliary support assembly 6 can be effectively prevented from obstructing the sliding process of the guide assembly 5 on one side of the guide rail 4, thereby ensuring the use effect of the positioning device for cylinder lifting.

[0056] like Figure 5 and Figure 6 As shown, the auxiliary support assembly 6 may include a locking plate 60 and a fixing plate 61; the fixing plate 61 is fixedly connected to the guide rail 4, the locking plate 60 is detachably connected to the fixing plate 61, and the bolt 20 adjacent to the auxiliary support assembly 6 is detachably connected to the locking plate 60.

[0057] When the auxiliary support assembly 6 and the bolt 20 adjacent thereto pass through Figure 5 When the fastening bolt 62 is fixedly connected, as shown in FIG. Figure 5 , Figure 6 and Fig. 9 As shown, the locking plate 60 is provided with a positioning hole 600, which is used to be mounted on the head of the bolt 20 adjacent to the auxiliary support assembly 6; the fixing plate 61 is provided with a threaded mounting hole, which is used to be connected to the central threaded hole on the bolt 20, and the fastening bolt 62 can be threadedly connected to the above-mentioned connected threaded mounting hole and the central threaded hole.

[0058] When the auxiliary support assembly 6 includes a locking plate 60 and a fixing plate 61, the fixing plate 61 in the auxiliary support assembly 6 can be pre-fixed to the side of the guide rail 4 facing away from the guide assembly 5 by welding or other methods. Before the bottom support assembly 3 is fixed to the peripheral side of the top opening of the container, the locking plate 60 can be sleeved on the head of the bolt 20 adjacent to the auxiliary support assembly 6 through the positioning hole 600, and when the fixing plate 61 abuts against the top of the locking plate 60, the threaded mounting hole on it is connected to the central threaded hole of the bolt 20.

[0059] When fixing the bottom support assembly 3 to the side of the top opening of the container, firstly sleeve the locking plate 60 with the head of the bolt 20, then abut the fixing plate 61 against the top of the locking plate 60, and make the threaded mounting hole on the fixing plate 61 connected with the central threaded hole on the bolt 20, then pass the tail of the fastening bolt 62 through the threaded mounting hole and the positioning hole 600 in turn and then thread it into the central threaded hole. When the head of the fastening bolt 62 abuts against the upper surface of the fixing plate 61, the fixed connection between the auxiliary support assembly 6 and the bolt 20 can be achieved.

[0060] Among them, the positioning hole 600 can be hexagonal, and the locking plate 60 in the auxiliary support assembly 6 is used to be engaged with the head of the bolt 20 through the positioning hole 600. At this time, the hexagonal end of the bolt 20 and the hexagonal positioning hole 600 can be used to prevent the auxiliary support assembly 6 from rotating, thereby effectively improving the stability of the auxiliary support assembly 6.

[0061] When the auxiliary support assembly 6 is composed of a locking plate 60 and a fixing plate 61, the installation and use of the auxiliary support assembly 6 is more flexible, and the connection process between the locking plate 60 and the fixing plate 61 can be used to further accurately adjust the position of the guide rail 4, thereby effectively avoiding damage or deformation to the guide rail 4 or the bolts 20 on the container during the installation process of the auxiliary support assembly 6.

[0062] like Figure 5 As shown, the bottom support assembly 3 includes a bottom plate 30 and a movable plate 31; the bottom plate 30 is arc-shaped and extends circumferentially along the top opening of the container, and the guide rail 4 is fixed on the bottom plate 30; movable plates 31 are respectively provided at both ends of the bottom plate 30, and a recessed portion 310 is provided on the movable plate 31, and the movable plate 31 can move along the extension direction of the bottom plate 30, and is fixedly connected to the bottom plate 30 after movement.

[0063] The bottom plate 30 is used to support the guide rail 4, and the bottom plate 30 is the main structure of the bottom support assembly 3. When the bottom plate 30 is in an arc shape, the bottom support assembly 3 can better adapt to the shape of the top opening circumference of the container, so that the bottom support assembly 3 can be more stably abutted between two adjacent bolts 20.

[0064] The movable plate 31 is used to make the length of the bottom support assembly 3 adjustable, so that the bottom support assembly 3 can be adapted to containers of different sizes, effectively improving the use range of the positioning device for cylinder hoisting.

[0065] The movable plate 31 and the bottom plate 30 can be slidably connected along the extension direction of the bottom plate 30, and the movable plate 31 and the bottom plate 30 are connected to each other by fasteners such as screws. The fasteners are used to keep the movable plate 31 in a fixed position after sliding on the bottom plate 30, thereby ensuring the overall structural stability of the bottom support assembly 3.

[0066] Or, if Figure 5 As shown, the bottom support assembly 3 further includes a connection structure 32 , and the movable plate 31 is connected to the bottom plate 30 via the connection structure 32 .

[0067] The connecting structure 32 is not only used to connect the movable plate 31 and the bottom plate 30 , but also enables the movable plate 31 to move on the bottom plate 30 .

[0068] In practical applications, the connection structure 32 may be a driver such as a swing cylinder, or a telescopic structure such as a telescopic rod.

[0069] like Figure 5 As shown, the preferred connection structure 32 of this embodiment includes a universal joint bolt 320 and a fixing bolt 321, one end of the universal joint bolt 320 is fixedly connected to the base plate 30, and the other end is threadedly connected to the movable plate 31; the fixing bolt 321 is used to connect between the movable plate 31 and the base plate 30 after the movable plate 31 moves along the extension direction of the base plate 30.

[0070] The universal joint bolt 320 includes a universal joint and a plurality of screw rods, the universal joint is connected between two adjacent screw rods, and the screw rods are used for threaded connection with the movable plate 31. The universal joint bolt 320 can not only use the universal joint to adjust the angle of the movable plate 31 on the horizontal plane, so that the movable plate 31 can always be located in the extension direction of the bottom plate 30, but also use the rotation process of the screw rod to drive the movable plate 31 to move, thereby realizing the length adjustment of the bottom support assembly 3.

[0071] Since the universal joint in the universal joint bolt 320 allows the movable plate 31 to still turn freely after moving, the connection structure 32 also includes a fixing bolt 321, which is used to fix the movable plate 31 to the base plate 30 after the movable plate 31 moves, thereby ensuring the overall stability of the bottom support assembly 3.

[0072] In order to improve the ease of use of the bottom support assembly 3, when fixing the bottom support assembly 3 to the peripheral side of the top opening of the container, the bottom plate 30 and the movable plate 31 can be placed between two adjacent bolts 20 on the peripheral side of the opening, and then the position of the movable plate 31 on the bottom plate 30 can be adjusted according to the universal joint bolt 320 until the recessed portion 310 of the movable plate 31 abuts against the adjacent bolt 20, and then the position of the movable plate 31 is fixed by the fixing bolt 321, and the installation process of the bottom support assembly 3 is completed.

[0073] like Figure 5 As shown, an L-shaped angle plate 300 may also be fixed on the bottom plate 30 , and the end of the universal joint bolt 320 away from the movable plate 31 is fixedly connected to the bottom plate 30 via the angle plate 300 .

[0074] Specifically, the angle plate 300 may be provided with a vertically extending strip hole, and the width of the strip hole gradually decreases from top to bottom, and the end of the universal joint bolt 320 away from the movable plate 31 is provided with a screw cap, and the screw rod of the universal joint bolt 320 close to the screw cap is provided with a ring plate, and the ring plate and the screw cap are spaced apart. When the universal joint bolt 320 is connected to the angle plate 300, the rod of the screw rod between the screw cap and the ring plate can be directly inserted into the bottom of the strip hole from top to bottom, and at this time, the screw cap and the ring plate are respectively abutted against both sides of the angle plate 300, and can be stably clamped on the angle plate 300.

[0075] In this embodiment, if Figure 5 As shown, the bottom plate 30 may include a plurality of arc-shaped plates 301 , which are sequentially distributed along the circumference of the top opening of the container, and any group of two adjacent arc-shaped plates 301 are detachably connected.

[0076] When the bottom plate 30 is formed by a plurality of arc-shaped plates 301 that are detachably connected in sequence, the convenience and flexibility of installing the bottom plate 30 between two adjacent bolts 20 can be effectively improved, and at the same time, interference with the bolts 20 during the installation process of the bottom plate 30 can be prevented to damage the bolts 20 .

[0077] To ensure the overall structural smoothness of the base plate 30, one of the two adjacent arc plates 301 of the base plate 30 may be provided with an upper step portion on one side of one of the arc plates 301, and a lower step portion on one side of the other arc plate 301, the upper step portion abuts against the top of the lower step portion, and the sum of the thickness of the upper step portion and the lower step portion is equal to the thickness of the arc plate 301.

[0078] Furthermore, the upper step portion and the lower step portion may be detachably connected by fasteners such as screws.

[0079] It should be noted that when the container is the pump casing 2 of a reactor coolant pump, the spacing between the bolts 20 at the top opening of the container and other dimensions are irregular. Based on this, in this embodiment, the bottom support assembly 3 preferably includes a bottom plate 30, a movable plate 31, a universal joint bolt 320 and a fixing bolt 321, and the bottom plate 30 includes a plurality of arc plates 301. At this time, the length adjustment process and the installation process of the bottom support assembly 3 are relatively flexible, and can effectively adapt to the spacing between any two adjacent bolts 20 at the top opening of the container.

[0080] As mentioned above, when the container is a pump casing 2 of a reactor coolant pump, threaded holes 21 are provided between two adjacent groups of bolts on the peripheral side of the top opening of the container. Based on the inherent structure of the threaded holes 21 on the peripheral side of the container opening, in this embodiment, a plugging member 33 is preferably fixed on the side of the bottom plate 30 facing away from the guide rail 4, and the plugging member 33 is used to be fixed in the threaded hole 21 between two adjacent bolts 20 of the container.

[0081] The plugging member 33 can cooperate with the inherent threaded hole 21 on the container to achieve the connection between the bottom support assembly 3 and the container without damaging the container, thereby ensuring the installation stability of the bottom support assembly 3 around the top opening of the container.

[0082] The plugging member 33 may be installed in the threaded hole 21 by means of threaded connection or the like.

[0083] In order to further improve the connection stability between the bottom support assembly 3 and the container, in this embodiment, the outer peripheral wall of the plugging member 33 is preferably provided with an external thread that is compatible with the threaded hole 21, and the plugging member 33 is fixed in the threaded hole 21 by a threaded connection.

[0084] In addition, in order to prevent the plugging member 33 from scratching the inner wall of the threaded hole 21 and affecting the subsequent use of the threaded hole 21, in this embodiment, the plugging member 33 is preferably made of a material with a hardness lower than that of a rigid material, such as nylon or plastic.

[0085] The blocking piece 33 and the base plate 30 can be detachably connected by fasteners such as screws. During the installation of the bottom support assembly 3, the blocking piece 33 can be first installed in the threaded hole 21 on the container, and then the base plate 30 can be fixed on the blocking piece 33. Then, the position of the movable plate 31 on the base plate 30 can be adjusted and the movable plate 31 can be fixed on the base plate 30.

[0086] like Figure 1 As shown, when the cylinder is a core package 1 of a reactor coolant pump, the outer peripheral wall of the cylinder is usually provided with radial pipes 10 for circulating the medium.

[0087] Based on the inherent structure of the radial tube 10 on the outer peripheral wall of the cylinder, in order to facilitate the determination of the installation position of the guide assembly 5 on the outer peripheral wall of the cylinder and to enhance the installation convenience and stability of the guide assembly 5, as shown in FIG. Figure 4 As shown, the guide assembly 5 can be mounted on a radial tube 10 on the outer peripheral wall of the cylinder.

[0088] It should be noted that when the bottom support assembly 3 is installed using the bolts 20 on the peripheral side of the top opening of the container and the guide assembly 5 is installed using the radial tube 10 on the outer peripheral wall of the cylinder, the size of the guide assembly 5 can be adjusted so that when the projection of the cylinder on the plane where the top of the container is located is located in the opening, the guide assembly 5 can still abut against one side of the guide rail 4.

[0089] Therefore, when using the positioning device for cylinder hoisting, the size of the guide assembly 5 can be determined in advance according to the pre-installation position of the cylinder in the container, the position of the bolts 20 on the container, the position of the radial tube 10 on the cylinder and the size of the guide rail 4. After selecting the size of the guide assembly 5 that meets the requirements, the bottom support assembly 3 can be directly installed using the bolts 20 on the side of the top opening of the container and the guide assembly 5 can be installed using the radial tube 10 on the outer peripheral wall of the cylinder. The cylinder can be accurately positioned, which effectively simplifies the positioning steps in the cylinder hoisting process and greatly improves the ease of use of the positioning device for cylinder hoisting.

[0090] Further, such as Figure 7 and Figure 8 As shown, the guide assembly 5 may include an annular fixed wheel 50 and an annular rotating wheel 51; the fixed wheel 50 is used to be sleeved and fixed on the outside of the radial tube 10 on the outer peripheral wall of the cylinder to be hoisted, and the rotating wheel 51 is sleeved outside the fixed wheel 50 and can rotate outside the fixed wheel 50, and the rotating wheel 51 is used to abut against the guide rail 4.

[0091] The fixed wheel 50 is used to connect with the radial tube 10 and support the rotating wheel 51, and the rotating wheel 51 is used to convert the sliding friction between the guide assembly 5 and the guide rail 4 into rolling friction, thereby reducing the friction resistance between the guide assembly 5 and the guide rail 4 and improving the smoothness of the cylinder lifting process.

[0092] In order to facilitate the fixing wheel 50 to be sleeved and fixed on the radial tube 10 on the outer peripheral wall of the cylinder to be hoisted, as shown in FIG. Figure 7 As shown, the fixed wheel 50 may include two half wheels, and the two half wheels of the fixed wheel 50 are respectively covered on both sides of the radial tube 10 and can abut against each other to form the fixed wheel 50. The two half wheels of the fixed wheel 50 can be connected to each other by fasteners such as screws. At this time, the fixed wheel 50 can be fixed to the radial tube 10 by adjusting the connection strength between the two half wheels of the fixed wheel 50.

[0093] In order to facilitate the installation of the rotating wheel 51 outside the fixed wheel 50, as shown in FIG. Figure 8 As shown, the rotating wheel 51 may also include two half wheels, and the two half wheels of the rotating wheel 51 are respectively covered on both sides of the fixed wheel 50 and can abut against each other to form the rotating wheel 51. The two half wheels of the rotating wheel 51 may also be connected to each other by fasteners such as screws, and in this case, the free rotation of the rotating wheel 51 outside the fixed wheel 50 can be achieved by adjusting the connection strength between the two half wheels of the rotating wheel 51.

[0094] like Figure 5 As shown, a slide groove 40 may be provided on one side of the guide rail 4 close to the guide assembly 5, and the rotating wheel 51 may enter the above-mentioned slide groove 40 and roll in the slide groove 40 during the cylinder hoisting process.

[0095] The slide groove 40 can limit the movement process of the guide assembly 5, effectively improving the guiding accuracy of the guide rail 4 to the guide assembly 5, thereby further improving the accuracy of the cylinder hoisting process and preventing the cylinder from deflecting.

[0096] Furthermore, a guide slope 41 may be provided between the side of the guide rail 4 where the slot of the slide groove 40 is located and the top of the guide rail 4 , and the guide slope 41 is inclined from the side away from the top of the guide rail 4 to the side located at the top of the guide rail 4 toward the direction away from the slot of the slide groove 40 .

[0097] The guide slope 41 can guide the guide component 5 to enter the slide groove 40 during the cylinder hoisting process, so that the guide component 5 can enter the slide groove 40 in time to guide the cylinder hoisting process.

[0098] In summary, the cylinder hoisting positioning device provided in this embodiment can fix the guide rail 4 in multiple directions through the bottom support assembly 3 and the auxiliary support assembly 6, thereby effectively ensuring the structural stability of the guide rail 4, so that the guide rail 4 is not easily displaced when guiding the guide assembly 5. And the cylinder hoisting positioning device can effectively improve the cylinder positioning accuracy and control the cylinder positioning deviation within 1 mm by cooperating with the radial tube 10 on the cylinder, the bolt 20 and the threaded hole 21 on the container. In addition, the bottom support assembly 3, the auxiliary support assembly 6 and the guide assembly 5 in the cylinder hoisting positioning device can be repeatedly disassembled and assembled, which effectively improves the ease of use of the cylinder hoisting positioning device.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A positioning device for cylinder hoisting, characterized in that: It comprises a bottom support assembly (3), a guide rail (4) and a guide assembly (5); The bottom support assembly (3) is used to be fixed on the peripheral side of the top opening of the container, and the guide rail (4) is erected on the bottom support assembly (3); The guide assembly (5) is mounted on the outer peripheral wall of the cylinder to be hoisted, and the guide assembly (5) is used to abut against one side of the guide rail (4) when the projection of the cylinder on the plane where the top of the container is located is located within the opening.

2. The cylinder hoisting positioning device according to claim 1, characterized in that: The bottom support assembly (3) is provided with recessed portions (310) on both sides thereof. The bottom support assembly (3) is used to be fixed between two adjacent bolts (20) on the peripheral side of the top opening of the container. The recessed portion (310) is used to abut against the outer peripheral wall of the bolt (20) adjacent thereto.

3. The cylinder hoisting positioning device according to claim 2, characterized in that: Also includes an auxiliary support assembly (6); The auxiliary support assembly (6) is installed on a side of the guide rail (4) facing away from the guide assembly (5), and the auxiliary support assembly (6) is used to be connected to a bolt (20) adjacent thereto.

4. The cylinder hoisting positioning device according to claim 3, characterized in that: The auxiliary support assembly (6) comprises a locking plate (60) and a fixing plate (61); The fixing plate (61) is fixedly connected to the guide rail (4), the locking plate (60) is detachably connected to the fixing plate (61), and the bolt (20) adjacent to the auxiliary support assembly (6) is detachably connected to the locking plate (60).

5. The cylinder hoisting positioning device according to any one of claims 2 to 4, characterized in that: The bottom support assembly (3) comprises a bottom plate (30) and a movable plate (31); The bottom plate (30) is arc-shaped and extends along the circumference of the top opening of the container, and the guide rail (4) is fixed on the bottom plate (30); The movable plates (31) are respectively provided at both ends of the bottom plate (30), the recessed portion (310) is provided on the movable plate (31), and the movable plate (31) can move along the extension direction of the bottom plate (30) and is fixedly connected to the bottom plate (30) after movement.

6. The cylinder hoisting positioning device according to claim 5, characterized in that: The bottom support assembly (3) further comprises a connection structure (32), and the movable plate (31) is connected to the bottom plate (30) via the connection structure (32).

7. The cylinder hoisting positioning device according to claim 6, characterized in that: The connection structure (32) comprises a universal joint bolt (320) and a fixing bolt (321), one end of the universal joint bolt (320) is fixedly connected to the base plate (30), and the other end is threadedly connected to the movable plate (31); The fixing bolts (321) are used to be connected between the movable plate (31) and the bottom plate (30) after the movable plate (31) moves along the extension direction of the bottom plate (30).

8. The cylinder hoisting positioning device according to claim 5, characterized in that: The bottom plate (30) comprises a plurality of arc-shaped plates (301), the plurality of arc-shaped plates (301) are sequentially distributed along the circumference of the top opening of the container, and any group of two adjacent arc-shaped plates (301) are detachably connected.

9. The cylinder hoisting positioning device according to claim 5, characterized in that: A blocking member (33) is fixed to the side of the bottom plate (30) facing away from the guide rail (4), and the blocking member (33) is used to be fixed in a threaded hole (21) between two adjacent bolts (20) of the container.

10. The cylinder hoisting positioning device according to any one of claims 1 to 4, characterized in that: The guide assembly (5) comprises an annular fixed wheel (50) and an annular rotating wheel (51); The fixed wheel (50) is used to be sleeved and fixed on the outside of the radial tube (10) on the outer peripheral wall of the cylinder to be hoisted, the rotating wheel (51) is sleeved outside the fixed wheel (50) and can rotate outside the fixed wheel (50), and the rotating wheel (51) is used to abut against the guide rail (4).

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