Disassembling and assembling device for rod head of guide vane servomotor of water-turbine generator set

Abstract

The utility model relates to the technical field of water-turbine generator sets, and particularly discloses a dismounting and mounting device for a guide vane servomotor rod head of a water-turbine generator set. Comprising a fixed supporting frame arranged on the outer side of a rod head in a sleeving mode, a rotary gear disc installed on the fixed supporting frame and coaxially arranged on the outer side of the rod head in a sleeving mode, a clamping device rotationally matched with the rotary gear disc and connected with the rod head, and a driving mechanism installed on the fixed supporting frame and used for driving the rotary gear disc. Compared with the prior art, the clamping device is driven by the driving mechanism to rotate, so that the rod head clamped and fixed by the clamping device is disassembled and assembled; rotation torque is output through the driving mechanism, no radial force is generated on the rod head, and the rod head can be stably and rapidly taken down from the piston.

Description

Technical Field

[0001] The utility model relates to the technical field of hydro-generator units, and more specifically, to a disassembly and assembly device for the guide vane servomotor rod head of a hydro-generator unit. Background Art

[0002] The guide vane servomotor rod head of a large hydro-generator unit generally has an irregular shape that transitions from a square head to a round head, and a round hole is provided in the round head;

[0003] Due to its unique design shape and heavy self-weight, an external torque needs to be applied to unscrew the rod head from the piston.

[0004] In the prior art, generally, a sling is wound around the round head of the rod head, and a hoist is used to pull the sling to slowly rotate the rod head. When the rod head is about to be unscrewed to the end of the piston, another hoist is used to lift the square head of the rod head to remove the rod head. The main disadvantages of this method are as follows:

[0005] Low efficiency, the sling is prone to slipping, and the safety risk is high;

[0006] The operation process will generate a radial force on the rod head, making disassembly and assembly difficult;

[0007] During the disassembly and assembly process, the hoist sling needs to be frequently adjusted, the operation is extremely inconvenient, and the labor intensity of the operator is high;

[0008] It is difficult to control the torque magnitude, and with the action of the radial torque, the thread is prone to sticking and damaging the servomotor. Summary of the Utility Model

[0009] The technical problem to be solved by the utility model is to provide a disassembly and assembly device for the guide vane servomotor rod head of a hydro-generator unit, which can output a rotational torque, will not generate a radial force on the rod head, can stably and quickly remove the rod head from the piston, and is convenient and efficient;

[0010] The solution adopted by the utility model to solve the technical problem is:

[0011] A disassembly and assembly device for the guide vane servomotor rod head of a hydro-generator unit includes a fixed support frame sleeved on the outside of the rod head, a rotary gear disc installed on the fixed support frame and coaxially sleeved on the outside of the rod head, a clamping device rotatably matched with the rotary gear disc and connected to the rod head, and a driving mechanism installed on the fixed support frame for driving the rotary gear disc.

[0012] In some possible implementation manners, in order to ensure that the force applied by the driving mechanism to the rod head is more uniform during the disassembly and assembly process; the clamping device includes two groups of fixed components symmetrically arranged along the axis of the rotary gear disc, and a screw rod for connecting the two groups of fixed components.

[0013] Specifically, there are two sets of screws. Installation holes are provided on the two sets of fixing components. The screws, installation holes, and nuts cooperate to connect and fix the two sets of fixing components, forming an integral structure.

[0014] In some possible implementation manners, the fixing component includes a disc installed in the rotary gear disc, a connecting plate installed on the disc and connected to the rotary gear disc, 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 where the two discs are close to each other.

[0015] After the rotary gear disc is coaxially sleeved on the outside of the rod head; when installing the clamping device, pass the disc through the circular hole in the rotary gear disc, and make the axis of the disc perpendicular to the axis of the circular hole, insert the cylinder into the circular hole, and make the side of the disc close to the rod head contact and abut against the rod head; then connect and fix the connecting plate to the rotary gear disc; then repeat the above operation to install the other 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.

[0016] In some possible implementation manners, in order to effectively realize the connection and fixation between the connecting plate and the rotary gear disc; the connecting plate includes a support plate arranged along the radial direction of the disc and installed on the disc, and ear plates installed at both ends of the support plate and connected to the fixed support frame.

[0017] Since the plane where the disc is located is parallel to the axis of the rotary gear disc, the support plate is vertically installed on the side of the disc away from the cylinder, that is, the plane where the support plate is located is parallel to the plane where the rotary gear disc is located; the connection and fixation between the fixing component and the rotary gear disc can be effectively realized through the ear plates; and when the rotary gear disc rotates, it drives the fixing component to rotate, thereby driving the rod head to rotate around its axis to realize disassembly and assembly.

[0018] In some possible implementation manners, the rotary gear disc includes a stationary ring connected to the fixed support frame, and a moving ring coaxially sleeved outside the stationary ring and rotatably matched with the stationary ring; the moving ring is in transmission cooperation with the driving mechanism and is connected to the connecting plate.

[0019] The driving mechanism includes a main gear in transmission cooperation with the moving ring, and a driving motor in transmission connection with the main gear; teeth meshing with the main gear are provided on the outside of the moving ring.

[0020] Specifically, the stationary ring is installed on the fixed support frame through bolts, and a through hole for the rod head to pass through is provided on the fixed support frame; the moving ring is a gear ring, and the teeth are provided on the outside; the moving ring is coaxially arranged with the stationary ring, and the moving ring is sleeved outside the stationary ring.

[0021] The rotary gear disc is a single-row ball type back-mounted support structure, and steel balls are arranged between the moving ring and the stationary ring to realize the reciprocating movement of the moving ring on the stationary ring.

[0022] The moving ring is provided with bolt holes for installing ear plates.

[0023] The driving motor is a servo motor installed on a fixed support frame. Its output shaft is connected to the main gear. Since the main gear meshes with the teeth on the moving ring, when the driving motor drives the main gear to rotate, it will drive the moving ring to rotate, thereby causing the fixed assembly connected to the moving ring to rotate around the axis of the moving ring. Since the two groups of fixed assemblies clamp the rod head, the rod head will be driven to rotate to achieve disassembly and assembly.

[0024] In some possible embodiments, the driving mechanism further includes a speed reducer disposed between the main gear and the driving motor; the speed reducer is a planetary speed reducer. The planetary speed reducer is installed on the fixed support frame by bolts, which plays a role in reducing the speed and increasing the torque.

[0025] In some possible embodiments, the fixed support frame is in sliding fit with the guide vane servomotor along the axial direction of the rod head; a sliding device of the guide vane servomotor is provided on the fixed support frame.

[0026] In some possible embodiments, the sliding device includes multiple groups of sliding bearings arranged on the outer side of the fixed support frame and evenly arranged along its circumferential direction, and support guide rods in sliding fit with the sliding bearings; one end of the support guide rod is connected to the guide vane servomotor.

[0027] In some possible embodiments, the outer diameter of the cylinder is adapted to the inner diameter of the middle circular hole of the rod head.

[0028] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0029] Compared with the prior art, the present utility model drives the clamping device to rotate through the driving mechanism, so that the rod head clamped and fixed by the clamped device can be disassembled and assembled;

[0030] The present utility model outputs a rotational torque through the driving motor, which will not generate a radial force on the rod head and can stably and quickly remove the rod head from the piston; the present utility model uses the driving motor and the planetary speed reducer to play a role in reducing the speed and increasing the torque;

[0031] By setting the sliding device, the present utility model can, on the one hand, achieve sliding in the horizontal direction along with the loosening of the rod head; the structure of the present utility model is simple and has strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic connection diagram of the present utility model and the rod head;

[0033] Figure 2 It is a schematic structural diagram of the present utility model;

[0034] Figure 3This is a schematic structural diagram of the slewing support frame, slewing gear disc, and drive mechanism in the present utility model;

[0035] Figure 4 This is a schematic structural diagram of the fixing component in the present utility model;

[0036] Wherein: 1. Fixed support frame; 11. Sliding bearing; 2. Slewing gear disc; 21. Moving ring; 22. Static ring; 3. Clamping device; 31. Disc; 32. Cylinder; 33. Connecting plate; 4. Drive mechanism; 41. Drive motor; 42. Reducer; 5. Sliding device; 51. Support guide rod; 52. Sliding bearing; 100. Rod head. Detailed implementation manners

[0037] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. 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, words such as "one" or "a" do not indicate a quantity limit, but indicate that there is at least one. In the implementation of this application, "and / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In the description of the embodiments of this application, unless otherwise stated, the meaning of "multiple" is two or more. For example, multiple positioning posts refer to two or more positioning posts. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] The present utility model will be described in detail below.

[0039] As Figures 1-4 shown:

[0040] A device for disassembling and assembling the guide vane servomotor rod head of a water turbine generator set includes a fixed support frame 1 sleeved outside the rod head 100, a slewing gear disc 2 installed on the fixed support frame 1 and coaxially sleeved outside the rod head 100, a clamping device 3 rotatably matched with the slewing gear disc 2 and connected to the rod head 100, and a drive mechanism 4 installed on the fixed support frame 1 for driving the slewing gear disc 2.

[0041] During use, the fixed support frame 1 is sleeved outside the rod head 100, so that the rotary gear disk 2 installed on the fixed support frame 1 is sleeved outside the rod head 100, and the rotary gear disk 2 is coaxially arranged with the rod head 100;

[0042] The clamping device 3 is installed on the fixed support frame 1, and then the clamping device 3 is connected to the rod head 100;

[0043] When disassembling and assembling the rod head 100, the driving mechanism 4 is used to control the rotation of the rotary gear disk 2 around its axis, driving the clamping device to rotate, so as to realize the rotation disassembly and assembly of the rod head 100; compared with the prior art, the disassembly and assembly are simpler and more convenient; the clamping device 3 can effectively prevent the rod head 100 from slipping during the disassembly and assembly process;

[0044] In some possible embodiments, in order to ensure that the force applied by the driving mechanism 4 to the rod head 100 is more uniform during the disassembly and assembly process; the clamping device 3 includes two sets of fixed components symmetrically arranged along the axis of the rotary gear disk 2, and a screw rod for connecting the two sets of fixed components.

[0045] Specifically, there are two sets of screw rods. Installation holes are provided on the two sets of fixed components. The screw rod, installation hole, and nut cooperate to connect and fix the two sets of fixed components to form an integral structure;

[0046] In some possible embodiments, the fixed component includes a disk 31 installed in the rotary gear disk 2, a connecting plate 33 installed on the disk 31 and connected to the rotary gear disk 2, and a cylinder 32 installed on the other side of the disk 31 and coaxial with the disk 31; the cylinders 32 on the two sets of fixed components are arranged on the side where the two disks 31 are close to each other; the outer diameter of the cylinder 32 is adapted to the inner diameter of the circular hole in the rod head 100.

[0047] After the rotary gear disk 2 is coaxially sleeved outside the rod head 100; when installing the clamping device 3, the disk 31 is passed through the circular hole in the rotary gear disk 2, and the axis of the disk 31 is perpendicular to the axis of the circular hole, so that the cylinder 32 is inserted into the circular hole and the side of the disk 31 close to the rod head 100 contacts and abuts against the rod head 100; then the connecting plate 33 is connected and fixed to the rotary gear disk 2; then the above operation is repeated to install the other set of fixed components; after the two sets of fixed components are installed in place, the two sets of fixed components are connected and fixed by a screw rod;

[0048] In some possible embodiments, in order to effectively realize the connection and fixation of the connecting plate 33 and the rotary gear disk 2; the connecting plate 33 includes a support plate arranged radially along the disk 31 and installed on the disk 31, and ear plates installed at both ends of the support plate and connected to the fixed support frame 1;

[0049] Since the plane where the disc 31 is located is parallel to the axis of the rotating gear disc 2, the support plate is vertically installed on the side of the disc 31 away from the cylinder 32, that is, the plane where the support plate is located is parallel to the plane where the rotating gear disc 2 is located; the connection and fixation of the fixed component and the rotating gear disc 2 can be effectively achieved through the ear plate; and when the rotating gear disc 2 rotates, the fixed component is driven to rotate, thereby driving the rod head 100 to rotate around its axis to achieve disassembly and assembly.

[0050] In some possible implementations, the rotary gear plate 2 includes a stationary ring 22 connected to the fixed support frame 1, and a movable ring 21 coaxially sleeved on the outside of the stationary ring 22 and rotatably matched with the stationary ring 22; the movable ring 21 is transmission-matched with the driving mechanism 4 and connected to the connecting plate 33;

[0051] The driving mechanism 4 includes a main gear that is transmission-coordinated with the moving ring 21 and a driving motor 41 that is transmission-connected with the main gear. Teeth that mesh with the main gear are arranged on the outer side of the moving ring 21 .

[0052] Specifically, the stationary ring 22 is mounted on the fixed support frame 1 by bolts, and a through hole is provided on the fixed support frame 1 for the rod head 100 to pass through; the dynamic ring 21 is a gear ring, wherein the teeth are arranged on the outside; the dynamic ring 21 is coaxially arranged with the stationary ring 22, and the dynamic ring 21 is sleeved on the outside of the stationary ring 22;

[0053] The rotary gear plate 2 is a single-row ball-type retractable support structure, with steel balls arranged between the dynamic ring 21 and the static ring 22 to achieve reciprocating motion of the dynamic ring 21 on the static ring 22;

[0054] The moving ring 21 is provided with bolt holes for mounting ear plates.

[0055] The driving motor 41 is a servo motor installed on the fixed support frame 1, and its output shaft is connected to the main gear. Since the main gear is meshed with the teeth on the moving ring 21, when the driving motor 41 drives the main gear to rotate, it will drive the moving ring 21 to rotate, thereby causing the fixed component connected to the moving ring 21 to rotate around the axis of the moving ring 21. 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.

[0056] In some possible implementations, the driving mechanism 4 further includes a reducer 42 disposed between the main gear and the driving motor 41; the reducer 42 is a planetary reducer. The planetary reducer is mounted on the fixed support frame 1 by bolts to reduce the rotation speed and increase the torque.

[0057] In some possible embodiments, the fixed support frame 1 is in axial sliding fit with the guide vane servomotor along the rod head 100; a sliding device 5 of the guide vane servomotor is arranged on the fixed support frame 1; the sliding device 5 includes a plurality of sliding bearings 52 arranged on the outer side of the fixed support frame 1 and evenly arranged along its circumferential direction, and a support guide rod 51 in sliding fit with the sliding bearings 52; one end of the support guide rod 51 is connected to the guide vane servomotor.

[0058] Preferably, there are four support guide rods 51 and four sliding bearings 52. One end of the support guide rod 51 is in screwed fit with the side of the piston close to the rod head 100, effectively realizing the support for the fixed support frame 1; overcoming the reaction torque during the disassembly and assembly process; the setting of the sliding bearings 52 enables the whole device to slide horizontally along the support guide rod 51 along with the loosening of the rod head 100.

[0059] The present utility model is not limited to the foregoing specific embodiments. The present utility model extends to any new feature or any new combination disclosed in this specification, as well as any new method or process step or any new combination disclosed.

Claims

1. A device for disassembling and assembling the guide vane servomotor rod head of a hydro-turbine generator set, characterized in that: The invention comprises a fixed support frame sleeved on the outside of the rod head, a rotating gear plate installed on the fixed support frame and coaxially sleeved on the outside of the rod head, a clamping device rotatably matched with the rotating gear plate and connected to the rod head, and a driving mechanism installed on the fixed support frame for driving the rotating gear plate.

2. A device for disassembling and assembling a guide vane servomotor rod head of a hydro-turbine generator set according to claim 1, characterized in that: The clamping device comprises two groups of fixing components which are symmetrically arranged along the axis of the rotating gear plate, and a screw rod used for connecting the two groups of fixing components.

3. A device for disassembling and assembling a guide vane servomotor rod head of a hydro-turbine generator set according to claim 2, characterized in that: The fixing assembly comprises a disc installed in the rotating gear disc, a connecting plate installed on the disc and connected to the rotating gear disc, and a cylinder installed on the other side of the disc and coaxial with the disc; the cylinders on the two sets of fixing assemblies are arranged on the side where the two sets of discs are close to each other.

4. A device for disassembling and assembling a guide vane servomotor rod head of a hydro-turbine generator set according to claim 3, characterized in that: The connecting plate comprises a supporting plate which is arranged along the radial direction of the disc and installed on the disc, and ear plates which are installed at both ends of the supporting plate and connected to the fixed supporting frame.

5. A device for disassembling and assembling a guide vane servomotor rod head of a hydro-turbine generator set according to claim 3, characterized in that: The rotary gear plate comprises 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 transmission matched with the driving mechanism and connected to the connecting plate.

6. A device for disassembling and assembling a guide vane servomotor rod head of a hydro-turbine generator set according to claim 4, characterized in that: The driving mechanism comprises a main gear which is transmission-matched with the moving ring, and a driving motor which is transmission-connected with the main gear; teeth which mesh with the main gear are arranged on the outer side of the moving ring.

7. A device for disassembling and assembling a guide vane servomotor rod head of a hydro-turbine generator set according to claim 6, characterized in that: The driving mechanism further comprises a reducer arranged between the main gear and the driving motor; the reducer is a planetary reducer.

8. The device for disassembling and assembling the guide vane servomotor rod head of a hydro-turbine generator set according to claim 1, characterized in that: The fixed support frame and the guide vane servomotor are slidably matched along the axial direction of the rod head; and a sliding device for the guide vane servomotor is arranged on the fixed support frame.

9. A device for disassembling and assembling a guide vane servomotor rod head of a hydro-turbine generator set according to claim 8, characterized in that: The sliding device comprises a plurality of sliding bearings arranged outside the fixed support frame and evenly arranged along the circumference thereof, and a supporting guide rod slidingly matched with the sliding bearings; one end of the supporting guide rod is connected to the guide vane servomotor.

10. A device for disassembling and assembling a guide vane servomotor rod head of a hydro-turbine generator set according to any one of claims 3 to 7, characterized in that: The outer diameter of the cylinder is matched with the inner diameter of the circular hole in the rod head.

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