Large water-turbine generator set guide vane servomotor rod head dismounting and mounting system and method

Abstract

The invention relates to the technical field of water-turbine generator sets, and particularly discloses a large water-turbine generator set guide vane servomotor rod head disassembling and assembling system and method. Comprising a rotary disassembly and assembly device connected with a round head of a rod head and used for controlling the rod head to rotate in the axial direction of the rod head, a follow-up lifting device arranged on the outer side of a square head in a sleeving mode, and a sliding frame in sliding fit with the rotary disassembly and assembly device and the follow-up lifting device. The rotary dismounting and mounting device and the follow-up lifting device are coaxially arranged and connected with each other; the sliding directions of the rotary dismounting and mounting device and the follow-up lifting device are parallel to the axis of the rod head; the follow-up lifting device is arranged on the outer side of the rod head in a sleeving mode and matched with the rod head in a rotating mode. According to the invention, the rod head is effectively prevented from falling off; due to the arrangement of the sliding frame, in the whole dismounting and mounting process, the follow-up lifting device and the rotary dismounting and mounting device move on the sliding frame, the situation that a rod head and a guide vane servomotor are not coaxial is avoided, and compared with the prior art, the rotating resistance of the rod head and a piston is small; the dismounting difficulty is reduced, and the dismounting efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of water turbine generator sets, and more specifically to a system and method for disassembling and assembling a guide vane servomotor rod head of a large water turbine generator set. Background Art

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

[0003] The prior art has the following disadvantages:

[0004] 1. The guide vane servo is generally installed in the waterwheel room. The level of its lower support is not easy to adjust. The support position needs to be adjusted continuously during the disassembly and assembly of the rod head.

[0005] 2. When pulling the hoist, radial torque will be generated on the rod head, which may easily cause concentricity deviation, large rotation resistance of the rod head, and even cause thread sticking;

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

[0007] 4. Due to structural limitations, it is difficult to install the device on site;

[0008] 5. The working space is small, the labor intensity of the staff is high, and the safety risk is high;

[0009] 6. Use a hoist to hang the square head of the pole, and apply external force to the round head for disassembly and assembly; as the pole head is screwed in or out, it is necessary to constantly adjust the position of the hanging point to ensure that the sling is vertical and also adjust the tightness of the hoist 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 a guide vane servomotor rod head of a large-scale hydro-generator set;

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

[0012] A large-scale hydro-turbine generator guide vane servomotor rod head disassembly and assembly system comprises a rotating disassembly and assembly device connected to the round head of the rod head and used for controlling the rod head to rotate around its axial direction, a follow-up lifting device sleeved on the outside of the square head, and a sliding frame with one end mounted on the guide vane servomotor and slidingly matched with the rotating disassembly and assembly device and the follow-up lifting device; the rotating disassembly and assembly device sleeved on the outside of the round head and connected to the round head; the rotating disassembly and assembly device and the follow-up lifting device are coaxially arranged and connected to each other; the sliding directions of the rotating disassembly and assembly device and the follow-up lifting device are parallel to the axis of the rod head; the follow-up lifting device sleeved on the outside of the rod head and rotationally matched with the rod head.

[0013] In some possible embodiments, the rotating disassembly and assembly device includes a fixed bracket that is mounted on the outside of the round head and slidably cooperates with the sliding frame, a rotating gear plate installed on the fixed bracket and coaxially mounted on the outside of the round head, a clamping device that is rotationally cooperated with the rotating gear plate and connected to the round head, and a driving mechanism installed on the fixed bracket for driving the rotating gear plate.

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

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

[0016] In some possible embodiments, the rotating gear plate includes a stationary ring connected to a fixed support frame, and a moving ring coaxially mounted on the outside of the stationary ring and rotatably matched with the stationary ring; the moving ring is in transmission match with the driving mechanism and is connected to the connecting plate; the driving mechanism includes a main gear in transmission match with the moving ring, a driving motor in transmission connection with the main gear, and a reducer arranged between the main gear and the driving motor; teeth meshing with the main gear are arranged on the outside of the moving ring.

[0017] In some possible embodiments, the follower lifting device includes a support member mounted on the outside of the rod head, and a positioning frame mounted on the outside of the support member and cooperating with the support member to rotate axially around the rod head; the positioning frame slides with the sliding frame and makes a linear motion towards or away from the guide vane relay.

[0018] In some possible embodiments, the positioning frame includes a positioning frame that slides with the sliding frame, a support frame installed in the positioning frame and cooperates with the inner side surface of the positioning frame to form a mounting cavity, and an adjustment component arranged on the positioning frame and used to adjust the relative position of the inner side surface of the support frame and the outer side surface of the support member; the support member is installed in the positioning frame and rotates with the support frame.

[0019] In some possible embodiments, the inner side surface of the support frame is an arc curved surface, and a plurality of rotating parts that abut and rotate with the support members are arranged on the inner side surface of the support frame; the rotation axis of the rotating parts is parallel to the axis of the club head; and a baffle bar is arranged on the outer side of the positioning frame for limiting the axial movement of the support frame along the club head.

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

[0021] The rotating disassembly device and the follow-up lifting device are provided with sliding bearings that are slidably matched with the guide support rods;

[0022] A connecting piece is arranged between the rotating and disassembling device and the follow-up lifting device.

[0023] In some possible implementations, the connection frame includes an end face frame arranged at an end of the guide support rod away from the guide vane servomotor, and a diagonal brace hinged to the guide support rod at the bottom of the rectangular frame;

[0024] The connecting member comprises a plurality of sets of parallelly arranged disassembly and assembly devices with rotating ends, connecting rods connected with the follow-up lifting devices, and a sling arranged on the connecting rods.

[0025] A disassembly and assembly method of a guide vane servomotor rod head disassembly and assembly system of a large-scale hydro-generator set according to the above-mentioned method specifically comprises the following steps:

[0026] Step S1: The round head of the rod head is sleeved on the outer side of the rotating and disassembling device and connected and fixed, and the square head is sleeved in the support member;

[0027] Step S2: connecting the sliding frame to the guide vane servomotor;

[0028] Step S3: The driving mechanism controls the rotating gear plate to rotate around the axis of the rod head, driving the round head to rotate, and the support member moves along the axis of the guide support rod away from or close to one side of the guide vane relay for disassembly and assembly.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The present invention effectively realizes the mechanized disassembly and assembly of the rod head through the cooperation of the follow-up lifting device and the rotating disassembly and assembly device. During the whole disassembly and assembly process, the follow-up lifting device will effectively prevent the rod head from falling. Due to the setting of the sliding frame, during the whole disassembly and assembly process, the follow-up lifting device and the rotating disassembly and assembly device will move on the sliding frame, which will not cause the rod head and the guide vane relay to be out of axial alignment. Compared with the prior art, the rotation resistance between the rod head and the piston is small, and the thread will not stick. Compared with the prior art, there is no need to adjust the position of the rod head in real time during the disassembly and assembly process, which reduces the difficulty of disassembly and assembly and has high disassembly and assembly efficiency.

[0031] During the disassembly and assembly process, the drive mechanism adjusts the output torque according to the tightness of the rod head and the piston, effectively avoiding thread sticking caused by excessive torque; the drive mechanism is electrically controlled, the disassembly and assembly process is continuous without dead zones, and there is no radial force on the rod head. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the present invention;

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

[0034] Figure 3 A top view of the present invention;

[0035] Figure 4 It is a schematic diagram of the structure of the rotating disassembly device in the present invention;

[0036] Figure 5 It is a schematic diagram of the structure of the rotary support frame, the rotary gear plate and the driving mechanism in the present invention;

[0037] Figure 6 It is a schematic diagram of the structure of the fixing component in the present invention;

[0038] Figure 7 It is a structural schematic diagram of the follow-up lifting device in the present invention;

[0039] Figure 8 It is a structural schematic diagram of the positioning frame in the present invention;

[0040] Fig. 9 It is a structural schematic diagram of the support frame in the present invention;

[0041] Fig.10 It is a structural schematic diagram of the support member in the present invention;

[0042] Fig.11 It is a usage state diagram of the present invention;

[0043] Among them: 1-rotating disassembly and assembly device, 11-fixed bracket, 12-rotating gear plate, 121-moving ring, 122-static ring, 13-clamping device, 131-disc, 132-cylinder, 133-connecting plate, 14-driving mechanism, 141-driving motor, 142-reducer, 2-follow-up lifting device, 21-positioning frame, 211-positioning frame, 2111-blocking bar, 212-support frame, 2121-arc surface, 2122-rotating part, 212-adjusting component, 22-support part, 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-oblique support, 10-guide vane relay, 100-rod head. DETAILED DESCRIPTION

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. The "first", "second" and similar words mentioned in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "one" and other similar words do not indicate a quantity restriction, but indicate the existence of at least one. In the implementation of this application, "and / or" describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" refers to two or more. For example, multiple positioning columns refer to two or more positioning columns. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The present invention is described in detail below.

[0046] like Figure 1-Figure 11 As shown:

[0047] A large-scale hydroelectric generator guide vane servomotor rod head disassembly and assembly system, comprising a rotating disassembly and assembly device 1 connected to the round head of the rod head 100 and used to control the rod head 100 to rotate around its axial direction, a follow-up lifting device 2 sleeved on the outside of the square head of the rod head 100 and rotatingly matched with the rod head 100 around the axis of the rod head 100, and a sliding frame 3 with one end mounted on the guide vane servomotor 10 and slidingly matched with the rotating disassembly and assembly device 1 and the follow-up lifting device 2 respectively; the rotating disassembly and assembly device 1 sleeved on the outside of the round head and connected to the round head; the rotating disassembly and assembly device 1 and the follow-up lifting device 2 are coaxially arranged and connected to each other; the sliding directions of the rotating disassembly and assembly device 1 and the follow-up lifting device 2 are parallel to the axis of the rod head 100;

[0048] Specifically, the sliding frame 3 is connected to the end surface of the piston in the guide vane servomotor 10 close to the rod head 100, and the sliding frame 3 is coaxially arranged with the piston;

[0049] Before disassembly, the round head of the rod head 100 will be connected to the rotating disassembly device 1 after passing through the follow-up lifting device 2, and the square head will be sleeved in the follow-up lifting device 2;

[0050] During disassembly, the rod head 100 is controlled to rotate around its axial direction by rotating the disassembly device 1. Since it is screwed with the piston, the rod head 100 will move along its axial direction, driving the rotating disassembly device 1 and the follower lifting device 2 to move along their axial direction, thereby realizing the disassembly of the rod head 100 and the piston. During the whole disassembly process, the follower lifting device 2 will be sleeved on the outer side of the square head and slide with the sliding frame 3, and the rotating disassembly device 1 will also slide with the sliding frame 3.

[0051] During disassembly, the rod head 100, the rotating disassembly and assembly device 1, and the follow-up lifting device 2 will move to the side away from the piston; otherwise, they will move to the side close to the piston. The follow-up lifting device 2 will effectively prevent the rod head 100 from falling during the entire disassembly and assembly process; during the disassembly and assembly process, the rotating disassembly and assembly device 1 adjusts the output torque according to the tightness of the fit between the rod head 100 and the piston, and can stop in time when the limit value is exceeded, effectively avoiding thread sticking caused by excessive torque; the sliding frame is coaxially arranged with the piston, and can move in the moving direction of the rotating disassembly and assembly device 1 and the follow-up lifting device 2 during the disassembly and assembly process, thereby effectively ensuring the coaxiality of the rod head 100 and the piston. Compared with the prior art, there is no need to adjust the coaxiality of the rod head 100 and the piston in real time; the use of mechanical disassembly and assembly reduces the labor intensity of operators and protects the personal safety of operators.

[0052] In some possible embodiments, in order to effectively realize the rotation of the rod head 100 through the rotating disassembly and assembly device 1; the rotating disassembly and assembly device 1 includes a fixed bracket 11 which is mounted on the outside of the round head and slidingly cooperates with the sliding frame 3, a rotating gear plate 12 installed on the fixed bracket 11 and coaxially mounted on the outside of the round head, a clamping device 13 which is rotationally cooperated with the rotating gear plate 12 and connected to the round head, and a driving mechanism 14 installed on the fixed bracket 11 for driving the rotating gear plate 12.

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

[0054] When in use, the fixed bracket 11 is sleeved on the outer side of the club head 100, so that the rotating gear plate 12 installed on the fixed bracket 11 is sleeved on the outer side of the club head 100, and the rotating gear plate 12 and the club head 100 are coaxially arranged; the clamping device 13 is installed on the fixed bracket 11, and then the clamping device 13 is connected to the club head 100; when disassembling and assembling the club head 100, the rotating gear plate 12 is controlled to rotate around its axial direction through the driving mechanism 14, driving the clamping device 13 to rotate, and the fixed bracket 11 and the follow-up lifting device 2 will move to the side away from the piston, thereby driving the club head 100 to rotate and disassemble; compared with the prior art, disassembly and assembly is simpler and more convenient; the clamping device 13 can effectively prevent the club head 100 from slipping during the disassembly and assembly process.

[0055] In some possible implementations, in order to effectively achieve the connection between the clamping device 13 and the round head;

[0056] The clamping device 13 includes two groups of fixing components symmetrically arranged along the axis of the rotating gear plate 12, and a screw rod for connecting the two groups of fixing components; the fixing components include a disc 131 installed in the rotating gear plate 12, a connecting plate 133 installed on the disc 131 and connected to the rotating gear plate 12, and a cylinder 132 installed on the other side of the disc 131 and coaxial with the disc 131; the cylinders 132 on the two groups of fixing components are arranged on the side where the two groups of discs 131 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 groups of screw rods, and mounting holes are set on the two groups of fixing components. The screw rods, the mounting holes, and the nuts cooperate to achieve the connection and fixation of the two groups of fixing components to form an integral structure;

[0058] After the rotary gear disk 12 is coaxially sleeved on the outer side 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, so that the cylinder 132 is inserted into the circular hole and the side of the disc 131 close to the rod head 100 is in contact with 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 using screws.

[0059] In some possible implementations, the connecting plate 133 includes a supporting plate that is radially arranged along the disc 131 and installed on the disc 131 , and ear plates that are installed at both ends of the supporting plate and connected to the fixing bracket 11 .

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

[0061] In some possible embodiments, the rotating gear plate 12 includes a stationary ring 122 connected to the fixed bracket 11, and a moving ring 121 coaxially sleeved on the outside of the stationary ring 122 and rotatably matched with the stationary ring 122; the moving ring 121 is in transmission cooperation with the driving mechanism 14 and is connected to the connecting plate 133; the driving mechanism 14 includes a main gear in transmission cooperation with the moving ring 121, a driving motor 141 in transmission connection with the main gear, and a reducer 142 arranged between the main gear and the driving motor 141; teeth meshing with the main gear are arranged on the outside of the moving ring 121.

[0062] Specifically, the stationary ring 122 is mounted on the fixed bracket 11 by bolts, and a through hole is provided on the fixed bracket 11 for the rod head 100 to pass through; the dynamic ring 121 is a gear ring, wherein the teeth are arranged on the outside; the dynamic ring 121 is coaxially arranged with the stationary ring 122, and the dynamic ring 121 is sleeved on the outside of the stationary ring 122;

[0063] The rotary gear plate 12 is a single-row ball-type retractable support structure, with steel balls arranged between the dynamic ring 121 and the static ring 122 to achieve reciprocating motion of the dynamic ring 121 on the static ring 122;

[0064] The moving ring 121 is provided with bolt holes for mounting the lug plates;

[0065] The driving motor 141 is a servo motor installed on the fixed bracket 11, and its output shaft is connected to the main gear. Since the main gear is meshed with the teeth on the moving ring 121, when the driving motor 141 drives the main gear to rotate, it will drive the moving ring 121 to rotate, so that the fixed component connected to the moving ring 121 rotates around the axis of the moving ring 121. Since the two groups of fixed components clamp the club head 100, they will drive the club head 100 to rotate to achieve disassembly and assembly.

[0066] The reducer 142 is a planetary reducer, which is mounted on the fixing bracket 11 by bolts to reduce the rotation speed and increase the torque.

[0067] In some possible embodiments, the follower lifting device 2 includes a support member 22 mounted on the outside of the rod head 100, and a positioning frame 21 mounted on the outside of the support member 22 and cooperating with the support member 22 to rotate axially around the rod head 100; the positioning frame 21 is slidably matched with the sliding frame 3 and makes a linear motion towards or away from the guide vane relay 10.

[0068] When the rod head 100 is disassembled, the round head of the rod head 100 is connected to the rotating disassembly and assembly device 1, and driven by the rotating disassembly and assembly device 1, the support member 22 used for clamping the square head and sleeved in the positioning frame 21 will rotate in the positioning frame 21 as the rod head 100 rotates; and drives the positioning frame 211 sleeved on the outside of the square head to move to the side away from the piston, and cooperates with the rod head 100 to move to the side 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, and there is no need to adjust the position of the hanging point at any time during the disassembly process; when the rod head 100 is installed, the rotating disassembly and assembly device 1 controls 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 embodiments, the positioning frame 21 includes a positioning frame 211 that is slidably matched with the sliding frame 3, a support frame 212 installed in the positioning frame 211 and matched with the inner side surface of the positioning frame 211 to form a mounting cavity, and an adjustment component 213 arranged on the positioning frame 211 and used to adjust the relative position of the inner side surface of the support frame 212 and the outer side surface of the support member 22; the support member 22 is installed in the positioning frame 211 and rotatably matched 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 in the positioning frame 211 and cooperates with the support member 22 to rotate around the axis direction of the rod head 100; the support frame 212 is sleeved on the outer side of the square head. Since the cross section of the square head is a rectangular structure, when the square head rotates, the support member 22 will rotate synchronously; at the same time, since the square head and the piston are screwed, the square head will make a linear motion close to or away from the piston along its axial direction. The sliding cooperation between the positioning frame 211 and the piston will also make a linear motion close to or away from the piston along the axis direction of the rod head 100 driven by the piston during the disassembly and assembly process.

[0071] The adjustment assembly 213 is divided into two groups, including a jacking screw having one end passing through the positioning frame 211 and extending into the installation cavity;

[0072] When adjusting the position of the support member 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, and then making the inner side surface of the adjusted support frame 212 abut against the outer side surface of the support member 22.

[0073] In some possible embodiments, in order to effectively realize the rotational cooperation between the support frame 212 and the support member 22; the inner side surface of the support frame 212 is an arc surface 2121, and a plurality of rotating members 2122 are arranged on the inner side surface of the support frame 212, which are in contact with and rotationally cooperate with the support member 22; the rotation axis of the rotating member 2122 is parallel to the axis of the club head 100; a baffle 2111 is arranged on the outer side of the positioning frame 211 for limiting the axial movement of the support frame 212 along the club head 100.

[0074] The support member 22 is sleeved on the outside of the square head, and its outer contour is circular, and acts on the rotating member 2122, so that the support member 22 can rotate and cooperate with the support frame 212 when the club head 100 rotates; after the entire device is installed in place, the support frame 212 will be located below the square head and rotate with the support member 22; the blocking bar 2111 is a set of two groups that are matched with the positioning frame 211 to form a limiting cavity, and the support frame 212 will be located in the limiting cavity, effectively limiting the movement of the support frame 212 along the axis direction of the club head 100;

[0075] Furthermore, the rotating members 2122 are arranged in multiple groups and evenly on the inner side of the support frame 212; the rotating members 2122 include a core shaft mounted on the support frame 212, a bearing sleeved on the outer side of the core shaft, and a supporting wheel sleeved on the outer side of the bearing; the above arrangement effectively ensures the rotational cooperation between the support member 22 and the support frame 212, and reduces the friction between the two;

[0076] Furthermore, a rectangular mounting hole is provided on the inner side of the support member 22; the square head of the club head 100 is sleeved in the mounting hole and is coaxially arranged; the support member 22 is sleeved on the outer side of the square head through the rectangular mounting hole, so that the rotation of the club head 100 drives the support member 22 to rotate.

[0077] Furthermore, the support member 22 is provided with a plurality of groups of weight-reducing holes, and the weight of the support member 22 can be effectively reduced by the arrangement of the weight-reducing holes;

[0078] Furthermore, the support member 22 includes four groups of support brackets 221 connected in sequence, which form a structure with a circular outer surface and a square inner surface after being connected.

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

[0080] The rotating and disassembling device 1 and the follower lifting device 2 are provided with a sliding bearing 30 that is slidably matched with the guide support rod 31;

[0081] A connecting piece is also provided between the rotating and disassembling device 1 and the follow-up lifting device 2 .

[0082] The sliding bearing 30 in the rotating disassembly device 1 is arranged on the outside of the fixed bracket 11, and the sliding bearing 30 in the follow-up lifting device 2 is arranged on the outside of the positioning frame 21, and both are slidably matched with the guide support rod 31;

[0083] Further, preferably, the guide support rods 31 are four groups, and the sliding bearings 30 are also four groups. The setting of the guide support rods 31 effectively realizes the positioning support for the fixed bracket 11 and the positioning frame 21; overcomes the counter torque during the disassembly process; the setting of the sliding bearings 30 enables the entire device to slide horizontally on the guide support rods 31 along with the disassembly of the rod head 100;

[0084] The telescopic support bracket 4 is used to support the guide support rod 31 at the bottom of the formed rectangular frame; the position of the rectangular frame relative to the guide vane servomotor 10 is adjusted by vertically extending the telescopic support bracket 4; and the coaxiality between the device and the rod head 100 can be effectively ensured by cooperating with the adjustment component 213;

[0085] The connecting frame 5 includes an end face frame 51 arranged at the end of the guide support rod 31 away from the guide vane servomotor 10, and an oblique brace 52 hinged to the guide support rod 31 at the bottom of the rectangular frame; the end face frame 51 is arranged so that the rectangular frame forms a stable integral structure connected to the guide vane servomotor 10; by adjusting the angle of the oblique brace 52, the horizontality 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 cooperation between the telescopic support bracket 4 and the diagonal brace 52 will effectively adjust the height of the rectangular frame in the vertical direction, thereby meeting the disassembly and assembly of the club 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 matched with a ball head and can rotate freely; the base and the rotating shaft are threadedly connected to achieve height adjustment, and the base is provided with an adjustment foot to achieve horizontal adjustment;

[0088] Two height-adjustable telescopic support brackets 4 support the guide support rods 31 at the bottom of the rectangular frame to enhance the structural strength and adjust the levelness;

[0089] The connecting member comprises a plurality of sets of parallelly arranged connecting rods connected with rotating disassembly and assembly devices 1 at both ends, follow-up lifting devices 2, and hanging devices arranged on the connecting rods;

[0090] The setting of the connecting rod will enable the follow-up lifting device 2 to move under the movement of the rod head 100 under the drive of the driving mechanism 14; thereby, during the disassembly process, there is no need to adjust its position, thereby preventing the rod head 100 from falling;

[0091] The hoist is arranged on a group of connecting rods at the top, and is mainly used to hoist the rod head 100 and the entire device by a hoisting arrangement after the disassembly is completed.

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

[0093] A disassembly and assembly method of a guide vane servomotor rod head disassembly and assembly system of a large-scale hydro-generator set according to the above-mentioned method specifically comprises the following steps:

[0094] Step S1: The round head of the club head 100 is mounted on the outer side of the rotating and disassembling device 1 and connected and fixed, and the square head is mounted in the support member 22;

[0095] After the square head is inserted into the support member 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 surface of the adjusted support frame 212 abuts against the outer side surface of the support member 22;

[0096] Specifically, when the rotating disassembly device 1 is connected with the round head, the round head of the rod head 100 is first passed through the circular hole, the disc is passed through the circular hole in the rotary gear plate 12, and the axis of the disc 131 is perpendicular to the axis of the circular hole, and the cylinder 132 is inserted into the circular hole and the side of the disc 131 close to the rod head 100 is in contact with the rod head 100; then the connecting plate 133 is connected and fixed to the rotary gear plate 12; and 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 by screws;

[0097] Step S2: connecting the sliding frame 3 to the guide vane servomotor 10; screwing each set of guide support rods 31 to the guide vane servomotor 10;

[0098] Step S3: The driving mechanism 14 controls the movable ring 121 of the rotating gear plate 12 to rotate around the axis of the rod head 100, driving the round head to rotate, and the support member 22 moves along the axis of the square head, and the rod head 100 moves away from or close to one side of the guide vane relay 10 along the axis of its guide support rod 31 for disassembly and assembly.

[0099] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A large-scale hydro-generator guide vane relay rod head disassembly and assembly system, It is characterized in that It includes a rotating disassembly and assembly device connected to the round head of the rod head and used to control the rotation of the rod head around its axial direction, a follow-up lifting device sleeved on the outside of the square head and rotating with the rod head, and a sliding frame with one end installed on the guide vane relay and slidingly cooperating with the rotating disassembly and assembly device and the follow-up lifting device; the rotating disassembly and assembly device is sleeved on the outside of the round head and connected to the round head; the rotating disassembly and assembly device and the follow-up lifting device are coaxially arranged and connected to each other; the sliding directions of the rotating disassembly and assembly device and the follow-up lifting device are parallel to the axis of the rod head; the follow-up lifting device is sleeved on the outside of the rod head and rotating with the rod head.

2. According to claim 1, a large-scale hydro-generator guide vane servomotor rod head disassembly and assembly system, It is characterized in that The rotating disassembly and assembly device includes a fixed bracket which is sleeved on the outside of the round head and slidably matched with the sliding frame, a rotating gear plate which is installed on the fixed bracket and coaxially sleeved on the outside of the round head, a clamping device which is rotationally matched with the rotating gear plate and connected to the round head, and a driving mechanism which is installed on the fixed bracket and is used to drive the rotating gear plate.

3. A large-scale hydro-generator guide vane servomotor rod head disassembly and assembly system according to claim 2, It is characterized in that The clamping device includes two groups of fixing components symmetrically arranged along the axis of the rotating gear disk, and a screw rod used to connect the two groups of fixing parts; the fixing components include a disc installed in the rotating gear disk, a connecting plate installed on the disc and connected to the rotating gear disk, and a cylinder installed on the other side of the disc and coaxial with the disc; the cylinders on the two groups of fixing components are arranged on the side where the two groups of discs are close to each other.

4. A large-scale hydro-generator guide vane servomotor rod head disassembly and assembly system according to claim 3, It is characterized in that The rotating gear plate includes a stationary ring connected to a fixed support frame, and a moving ring coaxially sleeved on the outside of the stationary ring and rotatably matched with the stationary ring; the moving ring is in transmission match with the driving mechanism and is connected to the connecting plate; the driving mechanism includes a main gear in transmission match with the moving ring, a driving motor in transmission connection with the main gear, and a reducer arranged between the main gear and the driving motor; teeth meshing with the main gear are arranged on the outside of the moving ring.

5. According to claim 1, a large-scale hydro-generator guide vane servomotor rod head disassembly and assembly system, It is characterized in that The follow-up lifting device includes a support member sleeved on the outside of the rod head, and a positioning frame sleeved on the outside of the support member and cooperating with the support member to rotate axially around the rod head; the positioning frame slides with the sliding frame and makes a linear motion close to or away from the guide vane relay.

6. A large-scale hydro-generator guide vane servomotor rod head disassembly and assembly system according to claim 5, It is characterized in that The positioning frame includes a positioning frame that slides with the sliding frame, a support frame installed in the positioning frame and cooperates with the inner side surface of the positioning frame to form a mounting cavity, and an adjustment component arranged on the positioning frame and used to adjust the relative position of the inner side surface of the support frame and the outer side surface of the support member; the support member is installed in the positioning frame and rotates with the support frame.

7. A large-scale hydro-generator guide vane servomotor rod head disassembly and assembly system according to claim 6, It is characterized in that The inner side surface of the support frame is an arc curved surface, and a plurality of rotating parts that abut and rotate with the support parts are arranged on the inner side surface of the support frame; the rotation axis of the rotating parts is parallel to the axis of the club head; a baffle bar for limiting the axial movement of the support frame along the club head is arranged on the outer side of the positioning frame.

8. According to claim 1, a large-scale hydro-generator guide vane servomotor rod head disassembly and assembly system, It is characterized in that The sliding frame includes a plurality of guide support rods arranged parallel to the rod head axis and forming a rectangular frame, a connecting frame arranged at one end of the guide support rod away from the guide vane servomotor, and an auxiliary telescopic support bracket arranged on the rectangular frame and used to support the guide support rod at the bottom of the rectangular frame; the plurality of guide support rods are evenly arranged along the circumference of the piston in the guide vane servomotor; The rotating disassembly device and the follow-up lifting device are provided with sliding bearings that are slidably matched with the guide support rods; A connecting piece is arranged between the rotating and disassembling device and the follow-up lifting device.

9. A large-scale hydro-generator guide vane servomotor rod head disassembly and assembly system according to claim 8, It is characterized in that The connecting frame comprises an end face frame arranged at an end of the guide support rod away from the guide vane servomotor, and a diagonal brace hinged to the guide support rod at the bottom of the rectangular frame; The connecting member comprises a plurality of sets of parallelly arranged disassembly and assembly devices with rotating ends, connecting rods connected with the follow-up lifting devices, and a sling arranged on the connecting rods.

10. A method for disassembling and assembling a guide vane servomotor rod head disassembling and assembling system for a large-scale hydro-generator set according to any one of claims 1 to 9, It is characterized in that The specific steps include: Step S1: The round head of the rod head is sleeved on the outer side of the rotating and disassembling device and connected and fixed, and the square head is sleeved in the support member; Step S2: connecting the sliding frame to the guide vane servomotor; Step S3: The driving mechanism controls the rotating gear plate to rotate around the axis of the rod head, driving the round head to rotate, and the support member moves along the axis of the guide support rod away from or close to one side of the guide vane relay for disassembly and assembly.

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