A large-scale hydraulic generator set guide vane booster rod head dismounting system and method

Abstract

The present application relates to the technical field of hydroelectric generating set, and particularly discloses a large hydroelectric generating set guide vane servomotor rod head dismounting system and method; the system comprises a rotary dismounting device connected with the round head of the rod head and used for controlling the rotary movement of the rod head around the axial direction, a follow-up lifting device sleeved outside the square head, and a sliding frame in sliding cooperation with the rotary dismounting device and the follow-up lifting device; the rotary dismounting device and the follow-up lifting device are coaxially arranged and connected with each other; the sliding directions of the rotary dismounting device and the follow-up lifting device are parallel to the axial line of the rod head; the follow-up lifting device is sleeved outside the rod head and in rotary cooperation with the rod head. The present application can effectively prevent the rod head from falling; due to the arrangement of the sliding frame, the follow-up lifting device and the rotary dismounting device will move on the sliding frame during the whole dismounting process, so that the off-axis condition of the rod head and the guide vane servomotor will not occur, and the rotary resistance of the rod head and the piston is smaller than that in the prior art; the dismounting difficulty is reduced, and the dismounting efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of hydro-generator technology, and more specifically, to a system and method for disassembling and assembling the guide vane relay rod head of a large hydro-generator. Background Technology

[0002] The existing method for disassembling and assembling the rod head of the guide vane servo of large hydro-generator units generally adopts a method of lower support and four-point lifting. A support and clamping device are installed at the lower part of the rod head. The rod head is disassembled and assembled from the piston on the guide vane servo using a hand-operated hoist. During the disassembly and assembly process, the concentricity of the rod head and piston is adjusted by measuring with a dial indicator.

[0003] The existing technology has the following drawbacks:

[0004] 1. The guide vane relay is usually installed in the water turbine room. Its lower support is not easy to adjust horizontally. The position of the support needs to be constantly adjusted during the disassembly and assembly of the rod head.

[0005] 2. When pulling the hoist, a radial torque is generated on the rod head, which can easily cause concentricity deviation, high rotational resistance of the rod head, and even cause the threads to stick.

[0006] 3. The change in clubhead torque cannot be monitored during disassembly and assembly, and the risk of clubhead jamming cannot be avoided in time;

[0007] 4. Due to structural limitations, the on-site installation of the device is difficult;

[0008] 5. The workspace is cramped, resulting in high labor intensity and safety risks for workers;

[0009] 6. Use a hoist with a sling to suspend the square end of the pole and apply external force to the round end for assembly and disassembly. As the pole head is screwed in or out, the position of the suspension point needs to be constantly adjusted to ensure that the sling is vertical and the tightness of the hoist needs to be adjusted to avoid applying excessive radial force to the pole head. Summary of the Invention

[0010] The technical problem to be solved by the present invention is to provide a system and method for disassembling and assembling the guide vane servo head of a large hydro-generator unit;

[0011] The solution adopted by this invention to solve the technical problem is:

[0012] A guide vane relay pole head disassembly and assembly system for a large hydro-generator unit includes a rotary disassembly and assembly device connected to the round head of the pole head and used to control the rotation of the pole head around its axial direction; a follower lifting device fitted on the outside of the square head; and a sliding frame with one end mounted on the guide vane relay and slidingly engaged with the rotary disassembly and assembly device and the follower lifting device. The rotary disassembly and assembly device is fitted on the outside of the round head and connected to it. The rotary disassembly and assembly device and the follower lifting device are coaxially arranged and interconnected. The sliding direction of the rotary disassembly and assembly device and the follower lifting device is parallel to the axis of the pole head. The follower lifting device is fitted on the outside of the pole head and rotatably engaged with the pole head.

[0013] In some possible implementations, the rotary assembly / disassembly device includes a fixed bracket fitted on the outside of the round head and slidingly engaged with the sliding frame, a rotary gear disk mounted on the fixed bracket and coaxially fitted on the outside of the round head, a clamping device rotatably engaged with the rotary gear disk and connected to the round head, and a drive mechanism mounted on the fixed bracket for driving the rotary gear disk.

[0014] In some possible implementations, the clamping device includes two sets of fixing components symmetrically arranged along the axis of the rotary gear disk, and a screw for connecting the two sets of fixing components; the fixing components include a disc installed inside the rotary gear disk, a connecting plate installed on the disc and connected to the rotary gear disk, and a cylinder installed on the other side of the disc and coaxial with the disc; the cylinders on the two sets of fixing components are arranged on the side of the two sets of discs that are close to each other.

[0015] In some possible implementations, the connecting plate includes a support plate arranged radially along the disk and mounted on the disk, and ear plates mounted at both ends of the support plate and connected to a fixed support frame.

[0016] In some possible implementations, the rotary gear disk includes a stationary ring connected to a fixed support frame and a rotating ring coaxially fitted on the outside of the stationary ring and rotatably engaged with the stationary ring; the rotating ring is driven by a drive mechanism and connected to a connecting plate; the drive mechanism includes a main gear driven by the rotating ring, a drive motor driven by the main gear, and a reducer disposed between the main gear and the drive motor; teeth that mesh with the main gear are provided on the outside of the rotating ring.

[0017] In some possible implementations, the follow-up lifting device includes a support member fitted on the outside of the pole head and a positioning frame fitted on the outside of the support member and rotating with the support member about the pole head axis; the positioning frame is slidably engaged with the sliding frame and makes linear movements toward or away from the guide vane relay.

[0018] In some possible implementations, the positioning frame includes a positioning frame that slides with the sliding frame, a support frame installed inside the positioning frame and forming a mounting cavity with the inner side of the positioning frame, and an adjustment assembly disposed on the positioning frame for adjusting the relative position of the inner side of the support frame and the outer side of the support member; the support member is installed inside the positioning frame and rotates with the support frame.

[0019] In some possible implementations, the inner surface of the support frame is an arc-shaped curved surface, and multiple sets of rotating members are provided on the inner surface of the support frame to abut against and rotate with the support members; the rotation axis of the rotating members is parallel to the axis of the rod head; and a stop bar is provided on the outer side of the positioning frame to restrict the support frame from moving axially along the rod head.

[0020] In some possible implementations, the sliding frame includes multiple sets of guide support rods arranged parallel to the rod head axis and forming a rectangular frame, a connecting frame disposed at the end of the guide support rod away from the guide vane servo, and an auxiliary telescopic support bracket disposed at the rectangular frame and used to support the guide support rod at the bottom of the rectangular frame; the multiple sets of guide support rods are evenly arranged along the circumference of the piston in the guide vane servo.

[0021] The rotating assembly / disassembly device and the follow-up lifting device are equipped with sliding bearings that slide in cooperation with the guide support rod;

[0022] A connecting component is provided between the rotating assembly / disassembly device and the follow-up lifting device.

[0023] In some possible implementations, the connecting frame includes an end face frame disposed at the end of the guide support rod away from the guide vane servo, and a diagonal brace hinged to the guide support rod at the bottom of the rectangular frame.

[0024] The connector includes multiple sets of parallel-arranged, rotating and disassembling devices at both ends, connecting rods connected to a follow-up lifting device, and lifting devices mounted on the connecting rods.

[0025] A method for disassembling and assembling a guide vane servo head disassembly and assembly system for a large hydro-generator unit, as described above, specifically includes the following steps:

[0026] Step S1: Fit the round end of the rod head onto the outside of the rotating assembly / disassembly device and fix it in place, so that the square end fits into the support component;

[0027] Step S2: Connect the sliding frame to the guide vane servo;

[0028] Step S3: Control the rotating gear disk to rotate around the axis of the rod head through the drive mechanism, drive the round head to rotate, and the support component moves in response to the square head. The rod head moves away from or closer to the guide vane relay along the axis of its guide support rod for disassembly and assembly.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] This invention effectively achieves mechanized disassembly and assembly of the rod head through the cooperation of a follow-up lifting device and a rotary disassembly and assembly device. During the entire disassembly and assembly process, the follow-up lifting device effectively prevents the rod head from falling. Due to the sliding frame, the follow-up lifting device and the rotary disassembly and assembly device move on the sliding frame throughout the process, preventing misalignment between the rod head and the guide vane relay. Compared to existing technologies, the rotational resistance between the rod head and the piston is lower, and thread sticking is avoided. Furthermore, compared to existing technologies, real-time adjustment of the rod head position is not required during disassembly and assembly, reducing the difficulty and increasing efficiency.

[0031] During the assembly and disassembly process, the drive mechanism adjusts the output torque according to the tightness of the fit between the rod head and the piston, effectively avoiding excessive torque that could cause the threads to stick. The drive mechanism is electrically controlled, ensuring a continuous assembly and disassembly process without dead zones and eliminating radial forces on the rod head. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the present invention;

[0033] Figure 2 This is a side view of the present invention;

[0034] Figure 3 This is a top view of the present invention;

[0035] Figure 4 This is a schematic diagram of the rotating assembly / disassembly device in this invention;

[0036] Figure 5 This is a schematic diagram of the structure of the rotary support frame, rotary gear disk, and drive mechanism in this invention;

[0037] Figure 6 This is a schematic diagram of the fixing component in this invention;

[0038] Figure 7 This is a schematic diagram of the follow-up lifting device in this invention;

[0039] Figure 8 This is a schematic diagram of the positioning frame in this invention;

[0040] Figure 9 This is a schematic diagram of the support frame in this invention;

[0041] Figure 10 This is a schematic diagram of the support structure in this invention;

[0042] Figure 11 This is a diagram showing the usage state of the present invention;

[0043] Among them: 1-rotation disassembly and assembly device, 11-fixed bracket, 12-rotary gear disk, 121-moving ring, 122-stationary ring, 13-clamping device, 131-disc, 132-cylinder, 133-connecting plate, 14-drive mechanism, 141-drive motor, 142-reducer, 2-follow-up lifting device, 21-positioning frame, 211-positioning frame, 2111-stop bar, 212-support frame, 2121-arc surface, 2122-rotating component, 212-adjusting component, 22-support component, 221-support bracket, 3-sliding frame, 30-sliding bearing, 31-guide support rod, 4-telescopic support bracket, 5-connecting frame, 51-end face frame, 52-diagonal brace, 10-guide vane relay, 100-rod head. Detailed Implementation

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the existence of at least one. In the implementation of this application, "and / or" describes the association relationship of related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more. For example, multiple positioning posts refer to two or more positioning posts. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] The present invention will now be described in detail.

[0046] like Figures 1-11 As shown:

[0047] A guide vane relay pole head disassembly and assembly system for a large hydro-generator unit includes a rotary disassembly and assembly device 1 connected to the round head of the pole head 100 and used to control the rotation of the pole head 100 around its axial direction; a follower lifting device 2 fitted on the outside of the square head of the pole head 100 and rotatably engaged with the pole head 100 around its axis; and a sliding frame 3 with one end mounted on the guide vane relay 10 and slidably engaged with the rotary disassembly and assembly device 1 and the follower lifting device 2 respectively. The rotary disassembly and assembly device 1 is fitted on the outside of the round head and connected to the round head; the rotary disassembly and assembly device 1 and the follower lifting device 2 are coaxially arranged and interconnected; the sliding directions of the rotary disassembly and assembly device 1 and the follower lifting device 2 are parallel to the axis of the pole head 100.

[0048] Specifically, the sliding frame 3 is connected to the end face of the piston near the rod head 100 in the guide vane relay 10, and the sliding frame 3 and the piston are coaxially arranged.

[0049] Before disassembly and assembly, the round head of the pole head 100 will be connected to the rotating disassembly and assembly device 1 after passing through the follow-up lifting device 2, and the square head will be fitted into the follow-up lifting device 2.

[0050] During disassembly and assembly, the rod head 100 is rotated around its axis by the rotating disassembly and assembly device 1. Since it is screwed to the piston, the rod head 100 will move along its axis, driving the rotating disassembly and assembly device 1 and the follower lifting device 2 to move along its axis, thereby realizing the disassembly and assembly of the rod head 100 and the piston. During the entire disassembly and assembly process, the follower lifting device 2 will be fitted on the outside of the square head and slide in cooperation with the sliding frame 3. The rotating disassembly and assembly device 1 will also slide in cooperation with the sliding frame 3.

[0051] During disassembly, the rod head 100, the rotary disassembly device 1, and the follower lifting device 2 will move away from the piston; conversely, they will move towards the piston. The follower lifting device 2 will effectively prevent the rod head 100 from falling during the entire disassembly and assembly process. During disassembly and assembly, the rotary disassembly device 1 adjusts the output torque according to the tightness of the fit between the rod head 100 and the piston. If the limit is exceeded, it will stop in time, effectively preventing excessive torque from causing the threads to stick. The sliding frame is coaxial with the piston, and during disassembly and assembly, it can move the rotary disassembly device 1 and the follower lifting device 2 to ensure the coaxiality of the rod head 100 and the piston. Compared with the existing technology, it is not necessary to adjust the coaxiality of the rod head 100 and the piston in real time. The mechanical disassembly and assembly reduces the labor intensity of the operators and protects their personal safety.

[0052] In some possible implementations, in order to effectively realize the rotation of the rod head 100 by the rotary disassembly device 1, the rotary disassembly device 1 includes a fixed bracket 11 that is fitted on the outside of the round head and slidably engaged with the sliding frame 3, a rotary gear disk 12 that is mounted on the fixed bracket 11 and coaxially fitted on the outside of the round head, a clamping device 13 that is rotatably engaged with the rotary gear disk 12 and connected to the round head, and a drive mechanism 14 that is mounted on the fixed bracket 11 for driving the rotary gear disk 12.

[0053] The drive mechanism 14 is used to drive the rotary gear disk 12 to rotate, thereby driving the clamping device 13 for clamping the rod head 100 to rotate, so that the rod head 100 rotates around its axis, thereby realizing the assembly and disassembly of the rod head 100.

[0054] In use, the fixed bracket 11 is fitted onto the outside of the rod head 100, thereby fitting the rotary gear disk 12 mounted on the fixed bracket 11 onto the outside of the rod head 100, and making the rotary gear disk 12 coaxial with the rod head 100; the clamping device 13 is installed on the fixed bracket 11, and then connected to the rod head 100; when assembling or disassembling the rod head 100, the rotary gear disk 12 is controlled to rotate around its axis by the drive mechanism 14, which drives the clamping device 13 to rotate, and the fixed bracket 11 and the follower lifting device 2 will move away from the piston, thereby realizing the rotation and assembly / disassembly of the rod head 100; compared with the prior art, assembly / disassembly is simpler and more convenient; the clamping device 13 can effectively prevent the rod head 100 from slipping during assembly / disassembly.

[0055] In some possible implementations, in order to effectively connect the clamping device 13 to the round head;

[0056] The clamping device 13 includes two sets of fixing components symmetrically arranged along the axis of the rotary gear disk 12, and a screw for connecting the two sets of fixing components. The fixing components include a disc 131 installed inside the rotary gear disk 12, a connecting plate 133 installed on the disc 131 and connected to the rotary gear disk 12, and a cylinder 132 installed on the other side of the disc 131 and coaxial with the disc 131. The cylinder 132 on the two sets of fixing components is located on the side of the two sets of discs 131 that are close to each other. The outer diameter of the cylinder 132 is adapted to the inner diameter of the circular hole in the rod head 100.

[0057] Specifically, there are two sets of screws, and mounting holes are provided on the two sets of fixing components. The screws, mounting holes, and nuts work together to connect and fix the two sets of fixing components, forming an integral structure.

[0058] After the rotary gear disk 12 is coaxially mounted on the outside of the rod head 100, when installing the clamping device 13, the disc 31 is passed through the circular hole in the rotary gear disk 12, and the axis of the disc 131 is perpendicular to the axis of the circular hole. The cylinder 132 is inserted into the circular hole, and the side of the disc 131 closest to the rod head 100 contacts and abuts against the rod head 100. Then the connecting plate 133 is connected and fixed to the rotary gear disk 12. Then the above operation is repeated to install another set of fixing components. After the two sets of fixing components are installed in place, the two sets of fixing components are connected and fixed with screws.

[0059] In some possible implementations, the connecting plate 133 includes a support plate arranged radially along the disk 131 and mounted on the disk 131, and ear plates mounted at both ends of the support plate and connected to the fixed bracket 11.

[0060] Since the plane of the disc 131 is parallel to the axis of the rotary gear disc 12, and the support plate is installed vertically on the side of the disc 131 away from the cylinder 132, that is, the plane of the support plate is parallel to the plane of the rotary gear disc 12; the connection and fixation of the fixing component and the rotary gear disc 12 can be effectively achieved through the ear plate; and when the rotary gear disc 12 rotates, it drives the fixing component to rotate, thereby driving the rod head 100 to rotate around its axis, thus realizing disassembly and assembly.

[0061] In some possible embodiments, the rotary gear disk 12 includes a stationary ring 122 connected to a fixed bracket 11 and a rotating ring 121 coaxially fitted on the outside of the stationary ring 122 and rotatably engaged with the stationary ring 122; the rotating ring 121 is driven by a drive mechanism 14 and connected to a connecting plate 133; the drive mechanism 14 includes a main gear driven by the rotating ring 121, a drive motor 141 driven by the main gear, and a reducer 142 disposed between the main gear and the drive motor 141; teeth that mesh with the main gear are provided on the outside of the rotating ring 121.

[0062] Specifically, the stationary ring 122 is bolted to the fixed bracket 11, and the fixed bracket 11 is provided with a through hole for the rod head 100 to pass through; the rotating ring 121 is a gear ring; wherein the teeth are located on the outer side; the rotating ring 121 is coaxially arranged with the stationary ring 122, and the rotating ring 121 is fitted on the outer side of the stationary ring 122.

[0063] The rotary gear disk 12 is a single-row ball reloading support structure. Steel balls are arranged between the moving ring 121 and the stationary ring 122 to realize the reciprocating motion of the moving ring 121 on the stationary ring 122.

[0064] The moving ring 121 has bolt holes for mounting ear plates;

[0065] The drive motor 141 is a servo motor, which is mounted on the fixed bracket 11. Its output shaft is connected to the main gear. Since the main gear meshes with the teeth on the moving ring 121, when the drive motor 141 drives the main gear to rotate, it will drive the moving ring 121 to rotate, thereby causing the fixed component connected to the moving ring 121 to rotate around the axis of the moving ring 121. Since the two sets of fixed components clamp the rod head 100, they will drive the rod head 100 to rotate, thus realizing disassembly and assembly.

[0066] The reducer 142 is a planetary reducer; the planetary reducer is bolted to the fixed bracket 11, which reduces the rotational speed and increases the torque.

[0067] In some possible implementations, the follow-up lifting device 2 includes a support member 22 fitted on the outside of the rod head 100 and a positioning frame 21 fitted on the outside of the support member 22 and rotatably engaged with the support member 22 around the rod head 100; the positioning frame 21 is slidably engaged with the sliding frame 3 and makes linear movements toward or away from the guide vane relay 10.

[0068] When disassembling the rod head 100, the round head of the rod head 100 is connected to the rotating disassembly and assembly device 1. Driven by the rotating disassembly and assembly device 1, the support member 22, which is used to hold the square head and is fitted inside the positioning frame 21, will rotate within the positioning frame 21 as the rod head 100 rotates. This will also drive the positioning frame 211, which is fitted outside the square head, to move away from the piston, cooperating with the rod head 100 to move away from the piston. The positioning frame 21 will always maintain support for the support member 22, so that the rod head 100 will not fall. During disassembly, it is not necessary to adjust the position of the lifting point at any time. When installing the rod head 100, the rotating disassembly and assembly device 1 can control the movement and rotation direction of the rod head 100 to be opposite to that during disassembly, which will not be described in detail here.

[0069] In some possible implementations, the positioning frame 21 includes a positioning frame 211 that slides with the sliding frame 3, a support frame 212 installed inside the positioning frame 211 and forming a mounting cavity with the inner side of the positioning frame 211, and an adjustment assembly 213 disposed on the positioning frame 211 for adjusting the relative position of the inner side of the support frame 212 and the outer side of the support member 22; the support member 22 is installed inside the positioning frame 211 and rotates with the support frame 212; the support member 22 is located above the support frame 212.

[0070] The positioning frame 211 is used to support and fix the support frame 212. The support frame 212 is installed inside the positioning frame 211 and rotates with the support member 22 around the axis of the rod head 100. The support frame 212 is fitted on the outside of the square head. Since the cross-section of the square head is rectangular, the support member 22 will rotate synchronously when the square head rotates. At the same time, since the square head is screwed to the piston, the square head will move in a straight line along its axis toward or away from the piston. During the disassembly and assembly process, the sliding fit between the positioning frame 211 and the piston will also cause the entire device to move in a straight line along the axis of the rod head 100 toward or away from the piston under the drive of the piston.

[0071] The adjustment assembly 213 consists of two sets, including a lifting screw with one end passing through the positioning frame 211 and extending into the mounting cavity;

[0072] When adjusting the position of the support 22, the lifting screw is turned to control the length of the lifting screw extending into the positioning frame 211 to change, thereby adjusting the position of the support frame 212, so that the inner side of the adjusted support frame 212 abuts against the outer side of the support 22.

[0073] In some possible implementations, in order to effectively achieve the rotational engagement between the support frame 212 and the support member 22, the inner surface of the support frame 212 is an arc-shaped curved surface 2121, and multiple sets of rotating members 2122 that abut against and rotate with the support member 22 are provided on the inner surface of the support frame 212; the rotation axis of the rotating member 2122 is parallel to the axis of the rod head 100; and a stop bar 2111 is provided on the outer side of the positioning frame 211 to restrict the support frame 212 from moving axially along the rod head 100.

[0074] The support member 22 is fitted onto the outside of the square head, and its outer contour is circular. It acts on the rotating member 2122, so that the support member 22 can rotate and engage with the support frame 212 when the rod head 100 rotates. After the entire device is installed in place, the support frame 212 will be located below the square head and rotate and engage with the support member 22. The stop bar 2111 is formed by two sets of matching and matching with the positioning frame 211 to form a limiting cavity. The support frame 212 will be located in the limiting cavity, effectively restricting the movement of the support frame 212 along the axial direction of the rod head 100.

[0075] Furthermore, the rotating components 2122 are arranged in multiple sets and evenly on the inner side of the support frame 212; the rotating components 2122 include a spindle mounted on the support frame 212, a bearing sleeved on the outside of the spindle, and a support roller sleeved on the outside of the bearing; with the above arrangement, the rotational cooperation between the support component 22 and the support frame 212 will be effectively guaranteed, and the friction between the two will be reduced.

[0076] Furthermore, a rectangular mounting hole is provided on the inner side of the support member 22; the square head of the rod head 100 is fitted into the mounting hole and coaxially arranged; the support member 22 is fitted onto the outer side of the square head through the rectangular mounting hole, so that the rod head 100 rotates and drives the support member 22 to rotate.

[0077] Furthermore, the support member 22 is provided with several sets of weight-reducing holes, which will effectively reduce the weight of the support member 22.

[0078] Furthermore, the support member 22 includes four sets of brackets 221 connected in sequence, which together form a structure with an outer circle and an inner square.

[0079] In some possible implementations, the sliding frame 3 includes multiple sets of guide support rods 31 arranged parallel to the axis of the rod head 100 and forming a rectangular frame, a connecting frame 5 disposed at the end of the guide support rods 31 away from the guide vane relay 10, and an auxiliary telescopic support bracket 4 disposed on the rectangular frame and used to support the guide support rods 31 at the bottom of the rectangular frame; the multiple sets of guide support rods 31 are evenly arranged along the circumference of the piston in the guide vane relay 10.

[0080] The rotating assembly / disassembly device 1 and the follow-up lifting device 2 are equipped with sliding bearings 30 that slide in cooperation with the guide support rod 31;

[0081] A connecting component is also provided between the rotating assembly / disassembly device 1 and the follow-up lifting device 2.

[0082] The sliding bearing 30 in the rotating assembly / disassembly device 1 is located on the outside of the fixed bracket 11, and the sliding bearing 30 in the follow-up lifting device 2 is located on the outside of the positioning frame 21, both of which are in sliding cooperation with the guide support rod 31.

[0083] Furthermore, preferably, there are four sets of guide support rods 31 and four sets of sliding bearings 30. The guide support rods 31 effectively provide positioning support for the fixed bracket 11 and the positioning frame 21; overcome the reaction torque during the disassembly and assembly process; and the sliding bearings 30 allow the entire device to slide horizontally on the guide support rods 31 along with the rod head 100 during disassembly and assembly.

[0084] The telescopic support bracket 4 is used to support the guide support rod 31 located at the bottom of the formed rectangular frame; by the vertical extension and retraction of the telescopic support bracket 4, the position of the rectangular frame relative to the guide vane relay 10 can be adjusted; and in conjunction with the adjustment component 213, the coaxiality of this device and the rod head 100 can be effectively guaranteed.

[0085] The connecting frame 5 includes an end face frame 51 located at the end of the guide support rod 31 away from the guide vane relay 10, and a diagonal brace 52 hinged to the guide support rod 31 at the bottom of the rectangular frame. The end face frame 51 is used to make the rectangular frame form a stable overall structure and connect it to the guide vane relay 10. By adjusting the angle of the diagonal brace 52, the levelness of the guide support rod 31 can be adjusted, the structural strength can be enhanced, and the torque transmitted by the guide support rod 31 can be borne during operation.

[0086] The combination of telescopic support bracket 4 and diagonal brace 52 will enable effective vertical adjustment of the rectangular frame height, thereby accommodating the disassembly and assembly of pole head 100 at different heights.

[0087] The telescopic support bracket 4 includes a bracket, a base, and a rotating shaft; the bracket and the rotating shaft are fitted with a ball joint and can rotate freely; the base and the rotating shaft are connected by a thread to achieve height adjustment, and the base is equipped with adjustable feet to achieve horizontal adjustment.

[0088] Two height-adjustable telescopic support brackets 4 support the guide support rods 31 located at the bottom of the rectangular frame, enhancing structural strength and adjusting levelness;

[0089] The connector includes multiple sets of parallel rods connected to a rotating disassembly and assembly device 1 and a follow-up lifting device 2 at both ends, as well as a lifting device mounted on the rods.

[0090] The linkage configuration allows the follow-up lifting device 2 to move under the drive of the drive mechanism 14 and the movement of the pole head 100; thus, during the assembly and disassembly process, there is no need to adjust its position, preventing the pole head 100 from falling.

[0091] The lifting device is set on a set of connecting rods at the top, and is mainly used to lift the rod head 100 and the entire device using a lifting device after disassembly.

[0092] Furthermore, a counter-torque locking support assembly is provided on the piston of the guide vane relay 10 to prevent the piston from rotating along with the rod head 100 when the rod head 100 rotates, thus making it impossible to disassemble the rod head 100.

[0093] A method for disassembling and assembling a guide vane servo head disassembly and assembly system for a large hydro-generator unit, as described above, specifically includes the following steps:

[0094] Step S1: Fit the round head of the rod head 100 onto the outside of the rotating assembly / disassembly device 1 and fix it in place, so that the square head is fitted into the support member 22;

[0095] After the square head is fitted into the support member 22, the length of the lifting screw extending into the positioning frame 211 is changed by turning the lifting screw, thereby adjusting the position of the support frame 212, so that the inner side of the adjusted support frame 212 abuts against the outer side of the support member 22.

[0096] Specifically, when connecting the rotating assembly / disassembly device 1 to the round head, first, pass the round head of the rod 100 through the round hole, pass the disc through the round hole in the rotary gear disk 12, and make the axis of the disc 131 perpendicular to the axis of the round hole. Insert the cylinder 132 into the round hole, and make the side of the disc 131 closest to the rod 100 contact and abut against the rod 100. Then, connect and fix the connecting plate 133 to the rotary gear disk 12. Then repeat the above operation to install another set of fixing components. After the two sets of fixing components are installed in place, use screws to connect and fix the two sets of fixing components.

[0097] Step S2: Connect the sliding frame 3 to the guide vane servo connector 10; screw each set of guide support rods 31 to the guide vane servo connector 10;

[0098] Step S3: Control the rotating ring 121 of the rotary gear disk 12 to rotate around the axis of the rod head 100 through the drive mechanism 14, drive the round head to rotate, and the support member 22 moves under the drive of the square head. The rod head 100 moves away from or close to the guide vane relay 10 along the axis of its guide support rod 31 for disassembly and assembly.

[0099] This invention is not limited to the specific embodiments described above. The invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A system for disassembling and assembling the guide vane relay rod head of a large hydro-generator unit, characterized in that, The device includes a rotary assembly / disassembly mechanism connected to the round end of the clubhead and used to control the clubhead's rotation around its axial direction; a follow-up lifting mechanism fitted on the outside of the square end and rotatably engaged with the clubhead; and a sliding frame with one end mounted on a guide vane relay and slidably engaged with the rotary assembly / disassembly mechanism and the follow-up lifting mechanism. The rotary assembly / disassembly mechanism is fitted on the outside of the round end and connected to it. The rotary assembly / disassembly mechanism and the follow-up lifting mechanism are coaxially arranged and interconnected. The sliding directions of the rotary assembly / disassembly mechanism and the follow-up lifting mechanism are parallel to the axis of the clubhead. The follow-up lifting mechanism is fitted on the outside of the clubhead and rotatably engaged with it. The follow-up lifting device includes a support member fitted on the outside of the pole head and a positioning frame fitted on the outside of the support member and rotating with the support member around the pole head axis; the positioning frame is slidably engaged with the sliding frame and makes linear movements toward or away from the guide vane relay. The positioning frame includes a positioning frame that slides with the sliding frame, a support frame installed inside the positioning frame and forming a mounting cavity with the inner side of the positioning frame, and an adjustment assembly disposed on the positioning frame for adjusting the relative position of the inner side of the support frame and the outer side of the support member; the support member is installed inside the positioning frame and rotates with the support frame. The inner surface of the support frame is an arc-shaped curved surface. Multiple rotating parts are provided on the inner surface of the support frame to abut against and rotate with the support members. The rotation axis of the rotating parts is parallel to the axis of the rod head. A stop bar is provided on the outer side of the positioning frame to restrict the movement of the support frame along the axial direction of the rod head.

2. The guide vane relay rod head disassembly and assembly system for a large hydro-generator unit according to claim 1, characterized in that, The rotating assembly / disassembly device includes a fixed bracket fitted on the outside of the round head and slidingly engaged with the sliding frame, a rotary gear disk mounted on the fixed bracket and coaxially fitted on the outside of the round head, a clamping device rotatably engaged with the rotary gear disk and connected to the round head, and a drive mechanism mounted on the fixed bracket for driving the rotary gear disk.

3. The guide vane relay rod head disassembly and assembly system for a large hydro-generator unit according to claim 2, characterized in that, The clamping device includes two sets of fixing components symmetrically arranged along the axis of the rotary gear disk, and a screw for connecting the two sets of fixing components; the fixing components include a disc installed inside the rotary gear disk, a connecting plate installed on the disc and connected to the rotary gear disk, and a cylinder installed on the other side of the disc and coaxial with the disc; the cylinders on the two sets of fixing components are arranged on the side of the two sets of discs that are close to each other.

4. The guide vane relay rod head disassembly and assembly system for a large hydro-generator unit according to claim 3, characterized in that, The rotary gear disc includes a stationary ring connected to a fixed support frame and a rotating ring coaxially fitted on the outside of the stationary ring and rotating in cooperation with the stationary ring; the rotating ring is driven in cooperation with a drive mechanism and connected to a connecting plate; the drive mechanism includes a main gear driven in cooperation with the rotating ring, a drive motor driven in cooperation with the main gear, and a reducer disposed between the main gear and the drive motor; teeth that mesh with the main gear are provided on the outside of the rotating ring.

5. The guide vane relay rod head disassembly and assembly system for a large hydro-generator unit according to claim 1, characterized in that, The sliding frame includes multiple sets of guide support rods arranged parallel to the rod head axis and forming a rectangular frame, a connecting frame disposed at the end of the guide support rod away from the guide vane servo, and an auxiliary telescopic support bracket disposed at the rectangular frame and used to support the guide support rod at the bottom of the rectangular frame; the multiple sets of guide support rods are evenly arranged along the circumference of the piston in the guide vane servo. The rotating assembly / disassembly device and the follow-up lifting device are equipped with sliding bearings that slide in cooperation with the guide support rod; A connecting component is provided between the rotating assembly / disassembly device and the follow-up lifting device.

6. The guide vane relay rod head disassembly and assembly system for a large hydro-generator unit according to claim 5, characterized in that, The connecting frame includes an end face frame disposed at the end of the guide support rod away from the guide vane relay, and a diagonal brace hinged to the guide support rod at the bottom of the rectangular frame. The connector includes multiple sets of parallel-arranged, rotating and disassembling devices at both ends, connecting rods connected to a follow-up lifting device, and lifting devices mounted on the connecting rods.

7. A method for disassembling and assembling a guide vane relay rod head disassembly and assembly system for a large hydro-generator unit according to any one of claims 1-6, characterized in that, Specifically, the following steps are included: Step S1: Fit the round end of the rod head onto the outside of the rotating assembly / disassembly device and fix it in place, so that the square end fits into the support component; Step S2: Connect the sliding frame to the guide vane servo; Step S3: Control the rotating gear disk to rotate around the axis of the rod head through the drive mechanism, drive the round head to rotate, and the support component moves in response to the square head. The rod head moves away from or closer to the guide vane relay along the axis of its guide support rod for disassembly and assembly.

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