Installation auxiliary device

Abstract

The utility model relates to the technical field of main pumps, in particular to an installation auxiliary device. The installation auxiliary device comprises a hoisting hoop and an adjusting mechanism. The hoisting hoop is a hollow cylinder internally provided with an inner cavity; the adjusting mechanism comprises a fixed frame and a movable frame which is connected to the fixed frame and can reciprocate relative to the fixed frame, a rolling bearing is installed on the movable frame, and the axis direction of the rolling bearing is perpendicular to the moving direction of the movable frame; a through hole communicated with the inner cavity is formed in the hoisting hoop, and the fixed frame is fixedly connected to the hoisting hoop and extends into the inner cavity from the through hole, so that the moving direction of the movable frame is arranged along the radial direction of the inner cavity, and when the movable frame moves, the rolling bearing can be close to or far away from the center line of the inner cavity. The utility model provides an auxiliary installation device which aims at improving safety and reliability of installation of a hinge seat of a main pump shock absorber.

Description

TECHNICAL FIELD

[0001] The utility model relates to main pump technical field especially, it relates to a kind of installation auxiliary device. BACKGROUND

[0002] VVER reactor type nuclear power plant operating condition is stable, nuclear safety factor is high, commercialization broad prospect and so on superiority have been recognized by the whole world.Based on the high nuclear safety factor characteristics of the equipment of the reactor type nuclear power plant, the main equipment of the main loop of nuclear island reactor plant has the complete set of hydraulic damping system, the hinged seat equipment of the damping system is usually fixed to the equipment by welding or embedded thread, and the installation condition is harsh, the precision requirement is high, and the difficulty is extremely great.

[0003] The main pump is the only rotating equipment in the reactor main equipment of nuclear power plant, and the main pump damper is the key to eliminate or weaken the radial movement and vibration of the rotating equipment.The main pump damper hinged seat is installed at the radial position of the outer wall of pump shell and motor stator, and is fixed by embedded thread.The hinged seat is usually installed by horizontal hoisting (or manual carrying) and thread engagement of equipment rotation process, and the whole process is directly bound by sling based on equipment hoisting or unstable manual carrying, which leads to difficult alignment and leveling of equipment installation thread engagement process, and due to the large friction resistance of thread rotation, the thread is easily locked, and the lifting and hoisting are damaged, so a safe and reliable device is needed for the installation of the main pump hinged seat, to ensure the safety and quality of equipment installation.

[0004] Therefore, the present application provides a new installation auxiliary device for the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an installation auxiliary device to improve the safety and reliability of the main pump damper hinged seat installation.

[0006] Based on the above purpose, the utility model provides an installation auxiliary device, which comprises a hoisting hoop and an adjusting mechanism.

[0007] The hoisting hoop is a hollow cylinder with an inner cavity.

[0008] The adjusting mechanism comprises a fixed frame and a moving frame connected to the fixed frame and capable of reciprocating relative to the fixed frame, and a rolling bearing is installed on the moving frame, and the axis direction of the rolling bearing is perpendicular to the moving direction of the moving frame.

[0009] The lifting hoop is provided with a through hole in communication with the inner cavity, the fixing frame is fixed to the lifting hoop and extends into the inner cavity from the through hole, and the moving direction of the moving frame is arranged along the radial direction of the inner cavity, so that the rolling bearing can be close to or away from the center line of the inner cavity when the moving frame moves.

[0010] Further, the adjusting mechanism is provided with a plurality of adjusting mechanisms, and the plurality of adjusting mechanisms are arranged along the axial direction of the cylinder to form a group of adjusting mechanisms.

[0011] The adjusting mechanism is provided with a plurality of groups of adjusting mechanisms, and the plurality of groups of adjusting mechanisms are arranged along the circumferential direction of the cylinder.

[0012] Further, the lifting hoop comprises a hoop plate, the through hole is arranged in the hoop plate, and the hoop plate is provided with a plurality of hoop plates, and the plurality of hoop plates are sequentially connected to form the hollow cylinder.

[0013] Among them, the lifting hoop comprises a plurality of gaps, one of the gaps is an opening and closing gap, and the remaining gaps are connecting gaps, the two hoop plates on both sides of the opening and closing gap are detachably connected through an opening and closing mechanism, and the two hoop plates on both sides of the connecting gap are rotatably connected through a hinge mechanism.

[0014] Further, the hinge mechanism is provided with a plurality of hinge mechanisms, and the plurality of hinge mechanisms are arranged along the extension direction of the connecting gap; and / or, the opening and closing mechanism is provided with a plurality of opening and closing mechanisms, and the plurality of opening and closing mechanisms are arranged along the extension direction of the opening and closing gap.

[0015] Further, the hoop plate is provided with two hoop plates, and the two hoop plates are respectively a first plate body and a second plate body, and the first plate body and the second plate body form an opening and closing gap and a connecting gap.

[0016] Further, the opening and closing mechanism comprises a first lifting lug plate fixed to the first plate body and a second lifting lug plate fixed to the second plate body, and the first lifting lug plate and the second lifting lug plate are detachably connected through an arc-shaped shackle.

[0017] Further, the hinge mechanism comprises a first hinge piece fixed to the first plate body and a second hinge piece fixed to the second plate body, and the first hinge piece and the second hinge piece are rotatably connected through a connecting bolt.

[0018] Further, the adjusting mechanism further comprises a guide pin shaft;

[0019] The guide pin shaft is fixed to the moving frame, and the rolling bearing is arranged on the guide pin shaft;

[0020] The guiding long hole is formed on the fixed frame, the guiding pin shaft is arranged in the guiding long hole and can move along the guiding long hole.

[0021] Further, the adjusting mechanism further comprises an adjusting assembly;

[0022] The adjusting assembly is fixed to the moving frame and movably connected to the fixed frame, and the adjusting assembly moves relative to the fixed frame to drive the moving frame to move the guiding pin shaft along the guiding long hole.

[0023] Further, the adjusting assembly comprises an adjusting shaft and an adjusting nut.

[0024] The adjusting hole is formed on the fixed frame, one end of the adjusting shaft is fixed to the moving frame, and the other end passes through the adjusting hole and is locked by the adjusting nut.

[0025] The installation auxiliary device has at least the following beneficial effects:

[0026] When the hinged seat is installed on the outer wall of the motor stator by using the installation auxiliary device, the moving frame is first moved relative to the fixed frame to make the rolling bearing approach or move away from the center line of the inner cavity, so as to adjust the inner diameter of the inner cavity actually used for clamping the hinged seat device, and the fitting diameter of the hoisting hoop is preliminarily adjusted; then the hinged seat device is positioned in the inner cavity of the hoisting hoop, the hoisting sling is connected to the hoisting hoop, the hinged seat device is hoisted to the installation position by the crane, then the moving frame is continuously moved relative to the fixed frame to make the rolling bearing approach or move away from the center line of the inner cavity, so as to finely adjust the position of the rolling bearing, align and level the thread of the hinged seat device with the installation thread hole; finally, the hinged seat device is rotated to make the hinged seat device roll relative to the rolling bearing, and the thread engagement and fixation of the hinged seat device are completed through the guiding and drag-reducing effects of the rolling bearing.

[0027] The hinged seat assembly is clamped onto the installation auxiliary device, allowing for stable installation instead of direct hoisting or manual handling. The clamp-type hoisting fixture ensures smooth lifting, preventing injuries from lifting operations and avoiding the risks associated with direct binding of slings or instability during manual handling. This enhances the safety of the main pump shock absorber hinged seat installation. Furthermore, the adjustable mechanism allows for the use of hinged seats with similar structures but different diameters, while also providing leveling and alignment during thread engagement. Additionally, by moving the rolling bearing closer to or further from the centerline of the inner cavity, the position of the rolling bearing can be finely adjusted, facilitating alignment and leveling of the hinged seat thread and the mounting threaded hole. Rotating the hinged seat allows it to roll relative to the rolling bearing, reducing rotational friction and preventing thread seizure during engagement, thus improving the reliability of the main pump shock absorber hinged seat installation. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the installation auxiliary device provided in the embodiment of this utility model;

[0030] Figure 2 A schematic diagram of the hoisting clamp of the installation auxiliary device provided in this embodiment of the utility model;

[0031] Figure 3 A schematic diagram of the adjustment mechanism of the installation auxiliary device provided in the embodiment of this utility model;

[0032] Figure 4 A schematic diagram of the structure for installing the hinge seat device on the outer wall of the motor stator using the installation auxiliary device provided in the embodiment of this utility model.

[0033] Figure label:

[0034] 100 - Install auxiliary devices;

[0035] 110 - Lifting clamp; 111 - Through hole; 112 - Inner cavity; 113 - Clamp plate;

[0036] 120 - Opening and closing mechanism; 121 - First lifting lug plate; 122 - Second lifting lug plate; 123 - Bow-shaped shackle;

[0037] 130 - hinge mechanism; 131 - first hinge leaf; 132 - second hinge leaf; 133 - connecting bolt;

[0038] 140 - adjustment mechanism; 141 - fixed frame; 142 - moving frame; 143 - rolling bearing; 144 - guide pin; 145 - adjustment shaft; 146 - adjustment nut;

[0039] 200 - hinged seat device;

[0040] 300 - hoisting sling;

[0041] 400 - motor stator outer wall. DETAILED DESCRIPTION

[0042] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0043] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing 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 present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] Embodiments

[0046] Please refer to Figure 1 With Figure 3The embodiment provides an installation auxiliary device 100 which comprises a hoisting hoop 110 and an adjusting mechanism 140; the hoisting hoop 110 is a hollow cylinder with an inner cavity 112; the adjusting mechanism 140 comprises a fixing frame 141 and a moving frame 142 connected to the fixing frame 141 and capable of reciprocating relative to the fixing frame 141, a rolling bearing 143 is installed on the moving frame 142, the axis direction of the rolling bearing 143 is perpendicular to the moving direction of the moving frame 142; a through hole 111 which is communicated with the inner cavity 112 is arranged on the hoisting hoop 110, the fixing frame 141 is fixedly connected to the hoisting hoop 110 and extends into the inner cavity 112 from the through hole 111, so that the moving direction of the moving frame 142 is arranged along the radial direction of the inner cavity 112, so that when the moving frame 142 moves, the rolling bearing 143 can be close to or away from the center line of the inner cavity 112.

[0047] Please refer to Figure 4 When the installation auxiliary device 100 is used to install the hinged seat on the outer wall 400 of the motor stator, first, the moving frame 142 is moved relative to the fixing frame 141, so that the rolling bearing 143 is close to or away from the center line of the inner cavity 112, so as to adjust the inner diameter of the inner cavity 112 which is actually used for clamping the hinged seat device 200, and the fitting diameter of the hoisting hoop 110 is preliminarily adjusted; then the hinged seat device 200 is positioned in the inner cavity 112 of the hoisting hoop 110, the hoisting sling 300 is connected on the hoisting hoop 110, the hinged seat device 200 is hoisted to the installation position through the crane; then the moving frame 142 is continuously moved relative to the fixing frame 141, so that the rolling bearing 143 is close to or away from the center line of the inner cavity 112, so as to finely adjust the position of the rolling bearing 143, to align and level the threads of the hinged seat device 200 and the installation screw holes; finally, the hinged seat device 200 is rotated, so that the hinged seat device 200 rolls relative to the rolling bearing 143, and the hinged seat device 200 is fixed through the guiding and resistance reducing effects of the rolling bearing 143.

[0048] Wherein, after the hinged seat device 200 is clamped on the installation auxiliary device 100, the installation auxiliary device 100 is hoisted instead of hoisting the hinged seat device 200 directly, or the hinged seat device 200 is directly carried by manpower, the hinged seat device 200 is stably hoisted by the hoop hoisting clamp, the lifting hoisting injury is avoided, the risk factors such as direct binding of the hoisting sling 300 or instability of manpower carrying are avoided, and therefore the safety of the installation of the main pump damper hinged seat is improved; in addition, the adjustable adjusting mechanism 140 can realize the use of the hinged seat device 200 with similar structures and different diameters, and has the functions of leveling and aligning during the screw thread engagement process of the device; in addition, the position of the rolling bearing 143 is finely adjusted by moving the rolling bearing 143 close to or away from the center line of the inner cavity 112, so that the screw thread of the hinged seat device 200 and the installation screw thread hole are aligned and leveled, and the hinged seat device 200 can roll relative to the rolling bearing 143 by rotating the hinged seat device 200, so as to reduce the rotating friction resistance of the hinged seat device 200, and avoid the situation that the screw thread is locked during the screw thread engagement process of the hinged seat device 200, thereby improving the reliability of the installation of the main pump damper hinged seat.

[0049] Preferably, referring to Figure 1 In the embodiment, a plurality of adjusting mechanisms 140 are arranged, and the plurality of adjusting mechanisms 140 are arranged along the axial direction of the cylinder to form a group of adjusting mechanisms 140; a plurality of groups of adjusting mechanisms 140 are arranged, and the plurality of groups of adjusting mechanisms 140 are arranged along the circumferential direction of the cylinder.

[0050] Preferably, in each group of adjusting mechanisms 140, the plurality of adjusting mechanisms 140 are uniformly arranged along the axial direction of the cylinder, and the plurality of groups of adjusting mechanisms 140 are uniformly arranged along the circumferential direction of the cylinder.

[0051] In this way, after the hinged seat device 200 is positioned in the inner cavity 112 of the hoisting hoop 110, the hinged seat device 200 can be supported and clamped by the adjusting mechanisms 140 as a whole, without contacting the inner wall of the hoisting hoop 110, so as to further reduce the rotating resistance of the hinged seat device 200.

[0052] In addition, by adjusting the plurality of adjusting mechanisms 140, the rolling bearings 143 of the plurality of adjusting mechanisms 140 are moved close to or away from the center line of the inner cavity 112, so as to adjust the inner diameter of the inner cavity 112 actually used for clamping the hinged seat device 200, and the fitting diameter of the hoisting hoop 110 is adjusted, so that the installation auxiliary device 100 can be applied to the installation of the main pump hinged seat device 200 with different diameters, and various risks in the process can be effectively avoided by applying the utility model, so as to improve the construction efficiency, reduce the labor intensity, save the labor cost, and improve the safety and quality of the construction.

[0053] Preferably, referring to Figure 2In the embodiment, the hoisting hoop 110 comprises hoop plates 113, the through holes 111 are arranged on the hoop plates 113, the hoop plates 113 are arranged in plurality, the plurality of hoop plates 113 are sequentially connected to form a hollow cylinder, and gaps are arranged between the adjacent hoop plates 113; wherein the hoisting hoop 110 comprises a plurality of gaps, one of which is an opening and closing gap, and the remaining gaps are connecting gaps; the two hoop plates 113 on both sides of the opening and closing gap are detachably connected through an opening and closing mechanism 120, and the two hoop plates 113 on both sides of the connecting gap are rotatably connected through a hinge mechanism 130.

[0054] Such an arrangement enables the two hoop plates 113 on both sides of the opening and closing gap to be detached by opening the opening and closing mechanism 120, and enables the plurality of hoop plates 113 to rotate along the hinge mechanism 130, so as to facilitate the placement of the hinged seat device 200 in the inner cavity 112, and then enables the two hoop plates 113 on both sides of the opening and closing gap to be connected by closing the opening and closing mechanism 120, thereby achieving the clamping of the hinged seat device 200 on the hoisting hoop 110.

[0055] Optionally, the hinge mechanism 130 is arranged in plurality, and the plurality of hinge mechanisms 130 are arranged at intervals along the extension direction of the connecting gap; or the opening and closing mechanism 120 is arranged in plurality, and the plurality of opening and closing mechanisms 120 are arranged at intervals along the extension direction of the opening and closing gap.

[0056] Preferably, please refer to Figure 1 and Figure 2 In the embodiment, the hinge mechanism 130 is arranged in plurality, and the plurality of hinge mechanisms 130 are arranged at intervals along the extension direction of the connecting gap; and the opening and closing mechanism 120 is arranged in plurality, and the plurality of opening and closing mechanisms 120 are arranged at intervals along the extension direction of the opening and closing gap.

[0057] For example, the hinge mechanism 130 is arranged in two, three, four or five, and the opening and closing mechanism 120 is arranged in two, three, four or five. Such an arrangement makes the connection between the adjacent hoop plates 113 more reliable and firm, thereby making the clamping of the hinged seat device 200 on the hoisting hoop 110 more stable and reliable.

[0058] Preferably, please refer to Figure 2 In the embodiment, the hoop plate 113 is arranged in two, and the two hoop plates 113 are respectively a first plate body and a second plate body, and the first plate body and the second plate body form an opening and closing gap and a connecting gap.

[0059] Preferably, please refer to Figure 1 and Figure 2 In the embodiment, the opening and closing mechanism 120 comprises a first lifting lug plate 121 fixed to the first plate body and a second lifting lug plate 122 fixed to the second plate body, and the first lifting lug plate 121 and the second lifting lug plate 122 are detachably connected through an arc-shaped shackle 123.

[0060] The setting can lock the first lifting lug plate 121 and the second lifting lug plate 122 by the arch-shaped shackle 123, and can connect the lifting sling 300 to the arch-shaped shackle 123, so as to hoist the hinged seat device 200 by the crane.

[0061] Preferably, in the embodiment, the arch-shaped shackle 123 is a standard arch-shaped hoisting shackle with a lifting capacity of 1t and M(4) level.

[0062] Preferably, referring to Figure 2 In the embodiment, the hinge mechanism 130 comprises a first hinge leaf 131 fixed to the first plate body and a second hinge leaf 132 fixed to the second plate body, and the first hinge leaf 131 and the second hinge leaf 132 are rotationally connected by a connecting bolt 133.

[0063] The setting can rotate the adjacent hoop plates 113 in opposite directions after the hinged seat device 200 is placed in the inner cavity 112, so that the adjusting mechanism 140 on the hoop plate 113 clamps the hinged seat device 200, and the connecting bolt 133 is tightened, which is simple and convenient to operate.

[0064] Preferably, in the embodiment, the hoop plate 113 is a 7mm-thick carbon steel arc plate, the first hinge leaf 131 and the second hinge leaf 132 are 7mm-thick connecting pieces, the first hinge leaf 131 and the second hinge leaf 132 are connected to the hoop plate 113 by welding, and the first lifting lug plate 121 and the second lifting lug plate 122 are connected to the hoop plate 113 by welding.

[0065] Preferably, referring to Figure 3 In the embodiment, the adjusting mechanism 140 further comprises a guide pin shaft 144; the guide pin shaft 144 is fixed to the moving frame 142, and the rolling bearing 143 is rotatably arranged on the guide pin shaft 144; the fixed frame 141 is provided with a guide long hole, the guide pin shaft 144 is arranged in the guide long hole and can move along the guide long hole.

[0066] The setting can move the moving frame 142 along the guide long hole when the moving frame 142 moves relative to the fixed frame 141, so that the guide long hole provides a guiding effect for the movement of the moving frame 142, and the movement of the moving frame 142 is more stable and accurate.

[0067] Preferably, in the embodiment, the adjusting mechanism 140 further comprises an adjusting assembly; the adjusting assembly is fixed to the moving frame 142 and movably connected to the fixed frame 141, and the adjusting assembly moves relative to the fixed frame 141 to drive the moving frame 142 to move the guide pin shaft 144 along the guide long hole.

[0068] Preferably, referring toFigure 3 In the embodiment, the adjusting assembly includes an adjusting shaft 145 and an adjusting nut 146; the fixing frame 141 is provided with an adjusting hole, and one end of the adjusting shaft 145 is fixedly connected to the moving frame 142, and the other end passes through the adjusting hole and is locked by the adjusting nut 146.

[0069] By moving the adjusting assembly relative to the fixing frame 141, the moving of the moving frame 142 is realized. Specifically, after the adjusting nut 146 is loosened, the adjusting shaft 145 can be moved along the adjusting hole, thereby driving the moving frame 142 to move; after the position of the moving frame 142 is adjusted, the adjusting nut 146 is tightened to lock the adjusting shaft 145.

[0070] Preferably, referring to Figure 3 The adjusting nut 146 is provided with two adjusting nuts 146, which are respectively arranged at the two ends of the adjusting hole, so as to lock the adjusting shaft 145 on both sides along the moving direction.

[0071] In summary, the operation method of the installation auxiliary device 100 of the embodiment is as follows:

[0072] Referring to Figure 4 According to the shape and size of the installation hinged seat device 200, the adjusting mechanism 140 is adjusted, specifically, the moving frame 142 is moved relative to the fixing frame 141, so that the rolling bearing 143 is close to or away from the center line of the inner cavity 112, thereby preliminarily adjusting the fitting diameter of the hoisting hoop 110; by opening the opening and closing mechanism 120, the two hoop plates 113 on both sides of the opening and closing seam are disassembled, so that the plurality of hoop plates 113 can rotate along the hinge mechanism 130, so that the two hoop plates 113 on both sides of the opening and closing seam are completely unfolded; the installation hinged seat device 200 is positioned in the inner cavity 112; the center of gravity of the installation hinged seat device 200 is adjusted, the opening and closing mechanism 120 is closed, and the first lifting lug plate 121 and the second lifting lug plate 122 between the two hoop plates 113 on both sides of the opening and closing seam are connected and locked by the arc-shaped shackle 123; the lifting sling 300 is connected on the arc-shaped shackle 123, and the hinged seat device 200 is hoisted to the installation position by the crane; the adjusting mechanism 140 is adjusted, specifically, the rolling bearing 143 is close to or away from the center line of the inner cavity 112, so as to fine-tune the position of the rolling bearing 143, align and level the device thread and the installation threaded hole; the hinged seat device 200 is rotated, so that the hinged seat device 200 rolls relative to the rolling bearing 143, and the hinged seat device 200 is fixed by thread engagement through the guiding and drag reduction effects of the rolling bearing 143.

[0073] In addition, the materials required for manufacturing a single set of main pump shock absorber hinged seat installation auxiliary device 100 are as follows:

[0074]

[0075] It should be noted that, in the installation process of the VVER reactor type main pump shock absorber hinge seat (12 sets for a single unit), if the traditional lifting or personnel direct carrying installation process (construction operation platform needs to be set up) is used, 4 days of construction period, 3 fitters, 2 hoisting workers and 3 scaffolding workers will be consumed. If the installation auxiliary device 100 of the embodiment is used (no construction operation platform is needed), 1 day of construction period, 1 fitter and 2 hoisting workers will be consumed. Through comparison, the installation auxiliary device 100 of the embodiment can save 3 days of construction period, 2 fitters and 3 scaffolding workers; shorten the construction period and improve the equipment installation efficiency; in addition, the installation auxiliary device 100 of the embodiment can be reused, and at the same time, it covers the use of similar structures of different diameter devices, has strong popularization and applicability; furthermore, the installation auxiliary device 100 of the embodiment can replace the outdated and low labor efficiency bottleneck of the installation method of the key main equipment of the nuclear power station; avoid safety and quality risks such as hoisting injury and thread seizure during the equipment installation process, and good economic and social benefits will be obtained.

[0076] In summary, the installation auxiliary device 100 of the embodiment has the following advantages: simple design and production, low cost; lifting clamps are used to avoid direct personnel carrying and reduce personnel construction intensity; strong safety and quality risk avoidance, simple equipment operation.

[0077] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the above 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 utility model.

Claims

1. An installation auxiliary device, characterized in that, Including hoisting clamps and adjustment mechanisms; The lifting clamp is a hollow cylinder with an internal cavity; The adjustment mechanism includes a fixed frame and a movable frame connected to the fixed frame and capable of reciprocating relative to the fixed frame. A rolling bearing is mounted on the movable frame, and the axial direction of the rolling bearing is perpendicular to the moving direction of the movable frame. The hoisting clamp has a through hole communicating with the inner cavity. The fixed frame is fixed to the hoisting clamp and extends into the inner cavity through the through hole, so that the moving frame moves in the radial direction of the inner cavity. Thus, when the moving frame moves, the rolling bearing can move closer to or further away from the center line of the inner cavity.

2. The installation auxiliary device according to claim 1, characterized in that, Multiple adjustment mechanisms are provided, and the multiple adjustment mechanisms are arranged at intervals along the axial direction of the cylinder to form a set of adjustment mechanisms; The adjustment mechanism is provided in multiple sets, and the multiple sets of adjustment mechanisms are arranged at intervals along the circumference of the cylinder.

3. The installation auxiliary device according to claim 1, characterized in that, The hoisting clamp includes a clamp plate, the through hole is opened in the clamp plate, and multiple clamp plates are provided. Multiple clamp plates are connected end to end to form the hollow cylinder, and there is a gap between adjacent clamp plates. The hoisting clamp includes multiple gaps, one of which is an opening and closing gap, and the remaining gaps are connecting gaps. The two clamp plates on both sides of the opening and closing gap are detachably connected by an opening and closing mechanism, and the two clamp plates on both sides of the connecting gap are rotatably connected by a hinge mechanism.

4. The installation auxiliary device according to claim 3, characterized in that, The hinge mechanism is provided in multiple ways, and the multiple hinge mechanisms are spaced apart along the extension direction of the connecting seam; and / or, the opening and closing mechanism is provided in multiple ways, and the multiple opening and closing mechanisms are spaced apart along the extension direction of the opening and closing seam.

5. The installation auxiliary device according to claim 3, characterized in that, Two hoop plates are provided, namely a first plate and a second plate, and an opening and closing joint and a connecting joint are formed between the first plate and the second plate.

6. The installation auxiliary device according to claim 5, characterized in that, The opening and closing mechanism includes a first lifting lug plate fixed to the first plate and a second lifting lug plate fixed to the second plate. The first lifting lug plate and the second lifting lug plate are detachably connected by an arc-shaped shackle.

7. The installation auxiliary device according to claim 5, characterized in that, The hinge mechanism includes a first hinge piece fixed to the first plate and a second hinge piece fixed to the second plate, and the first hinge piece and the second hinge piece are rotatably connected by connecting bolts.

8. The installation auxiliary device according to any one of claims 1-7, characterized in that, The adjustment mechanism also includes a guide pin; The guide pin is fixed to the movable frame, and the rolling bearing is mounted on the guide pin; The fixing frame has a guide hole, and the guide pin is disposed in the guide hole and can move along the guide hole.

9. The installation auxiliary device according to claim 8, characterized in that, The adjustment mechanism also includes an adjustment component; The adjustment component is fixed to the movable frame and movably connected to the fixed frame. The adjustment component moves relative to the fixed frame and can drive the movable frame, causing the movable frame to move the guide pin along the guide elongated hole.

10. The installation auxiliary device according to claim 9, characterized in that, The adjustment assembly includes an adjustment shaft and an adjustment nut; The fixed frame has an adjustment hole. One end of the adjustment shaft is fixed to the movable frame, and the other end passes through the adjustment hole and is locked by the adjustment nut.

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