CN217558454U

CN217558454U - Novel runner link mechanism

Info

Publication number: CN217558454U
Application number: CN202221363930.XU
Authority: CN
Inventors: 张续钟; 李俊娜; 杨希华; 任尚洁; 李强
Original assignee: Zhejiang Fuchunjiang Hydropower Equipment Co ltd
Current assignee: Zhejiang Fuchunjiang Hydropower Equipment Co ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-10-11
Anticipated expiration: 2032-05-31

Abstract

The utility model discloses a novel runner link mechanism, link board and connecting rod round pin including inboard even board, the outside links to be equipped with the planking pinhole on the board, and the inboard is equipped with the inner panel pinhole on linking the board, the inner panel pinhole is the tapering hole, connecting rod round pin lower extreme and inner panel pinhole phase-match, connecting rod round pin upper end cup joints with the planking pinhole, connecting rod round pin lower extreme cup joints with the inner panel pinhole, and the protruding boss that forms in connecting rod round pin up end middle part, the connecting rod round pin terminal surface boss outside is equipped with the locking plate with the seam crossing lid of planking pinhole, and the locking plate links the board with the outside and passes through the bolt fastening. The problem of relative rotation and relative slip between the inboard outside even board and the connecting rod round pin is solved, the operating cycle of runner has been prolonged, has reduced the maintenance frequency of runner, has improved hydraulic generator's operating stability, for the power station considerable economic benefits of area. The locking plate and the bolt are used for fixing, parts can be overhauled and replaced in a limited space in the rotating wheel body, and the overhaul period of the rotating wheel operating system is greatly shortened.

Description

Novel runner link mechanism

Technical Field

The utility model relates to a reaction formula engine part field especially relates to a novel runner link mechanism.

Background

The bulb through-flow turbine has large flow, the hub of the rotating wheel is smaller, the arrangement space of a connecting rod mechanism in the operating system of the rotating wheel is smaller, and the fixing space among the connecting rod pin, the inner connecting plate and the outer connecting plate is very small. In the prior art, the connecting rod pin, the inner connecting plate and the outer connecting plate are fixed by adopting a fastening screw mode; in the long-term operation process of the unit, due to the influence of various factors such as fatigue, vibration and centrifugal force, the rotating wheel operating mechanism is caused to have problems, for example, a set screw is displaced or is extruded and folded, the connecting rod pin axially moves towards the outer side to generate axial displacement towards the outer side, and the connecting rod pin is scraped with the rotating wheel body after being axially displaced so as to seriously influence the stable operation of the unit. And because runner hub structure is inseparable, the maneuverability space is less after holding screw aversion or being crowded and roll over, leads to the later stage to restore very difficult.

Disclosure of Invention

The utility model relates to a solve prior art's hydraulic turbine runner link mechanism and only lock through holding screw, long-term operation easily appears the screw aversion, the connecting rod round pin produces axial displacement and damage the problem that the back is difficult to the maintenance, provides a stable in structure, easy to overhaul's novel runner link mechanism.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a novel runner link mechanism, links board and connecting rod round pin including inboard even board, the outside is equipped with the planking pinhole on linking the board, inboard is equipped with the inner panel pinhole on linking the board, the inner panel pinhole is the taper hole, connecting rod round pin lower extreme and inner panel pinhole phase-match, connecting rod round pin upper end cup joints with the planking pinhole, connecting rod round pin lower extreme cup joints with the inner panel pinhole, the protruding boss that forms in connecting rod round pin up end middle part, the connecting rod round pin terminal surface boss outside is equipped with the locking plate with the seam crossing lid in planking pinhole, the locking plate passes through the bolt fastening with the board is even in the outside. The outer diameter of the upper portion of the connecting rod pin is matched with the outer plate pin hole, during installation, the lower end of the connecting rod pin penetrates through the outer plate pin hole and is sleeved with the inner plate pin hole below after being sleeved from the upper portion of the outer plate pin hole, the taper of the inner plate pin hole provides outward supporting force when the connecting rod pin generates axial force, the locking plate provides inward supporting force when the connecting rod pin generates axial force, the connecting rod pin is prevented from moving inwards and outwards along the axial direction, meanwhile, the boss interacts with the locking plate, relative rotation of the connecting rod pin and the outer side plate is prevented, and the taper of the inner plate pin hole is used for preventing the connecting rod pin and the inner side connecting plate from rotating relatively. Above-mentioned structure has solved relative rotation and relative slip problem between interior outside even board and the connecting rod round pin, has prolonged the operating cycle of runner, has reduced the maintenance frequency of runner, has improved hydraulic generator's operating stability, for the power station area considerable economic benefits. Adopt the form of locking plate and bolt fastening, can overhaul, change the part in the internal finite space of runner, have maneuverability, avoid adopting the fixed mode of screwing up the screw, satisfy the steady operation needs, and later stage overhauls and maintains the convenience, the maintenance cycle of the runner operating system that has significantly reduced.

Preferably, the boss is square, the boss is arranged in the middle of the upper surface of the connecting rod pin, the locking plate is circular, a square through hole is formed in the middle of the locking plate, the shape of the square through hole is matched with that of the boss, and the outer diameter of the locking plate is larger than the inner diameter of the pin hole of the outer plate. The square through hole penetrates through the locking plate in the thickness direction, after the square through hole is installed, the side face of the square boss is attached to the side face of the locking plate, meanwhile, the boss and the locking plate interact, and the locking plate is fixed with the outer side connecting plate through bolts to prevent relative rotation of the connecting rod pin and the outer side plate.

Preferably, the locking plate is provided with a plurality of bolt holes, the bolt holes are distributed around a concentric circle with the excircle of the locking plate, the inner diameter of the concentric circle is larger than that of the pin hole of the outer plate, and the inner diameter and the outer diameter of the concentric circle are smaller than that of the excircle of the locking plate. The locking plate is fixed with the outer connecting plate through a bolt, and provides inward supporting force when the connecting rod pin generates axial force, so that the connecting rod pin is prevented from moving outwards along the shaft.

Preferably, the inner diameter of the round hole on the inner side of the inner plate pin hole is larger than that of the round hole on the outer side of the inner plate pin hole, the lower end of the connecting rod pin is provided with a taper section, and the outer diameter of the upper edge of the taper section is smaller than that of the lower edge of the taper section. The external diameter of the taper section is matched with the internal diameter of the inner plate pin hole, and inward supporting force is provided when the connecting rod pin generates axial force, so that the connecting rod pin is prevented from moving in the axial direction.

Preferably, a connecting pin shaft sleeve is sleeved on the pin body between the upper end and the lower end of the connecting rod pin, the upper edge of the connecting pin shaft sleeve is attached to the inner wall of the outer side connecting plate, and the lower edge of the connecting pin shaft sleeve is attached to the outer wall of the inner side connecting plate and fixed through a set screw. The connecting pin bushing is used for preventing the connecting pin from rotating.

Preferably, the thickness of the locking plate is the same as the height of the square boss. The upper surface of the boss is flush with the upper surface of the locking plate after installation.

Preferably, the outer diameter of the upper end of the connecting rod pin is matched with the inner diameter of the outer plate pin hole in the radial direction. When the connecting rod pin is mounted or dismounted, the upper part of the pin hole of the outer plate of the connecting rod pin is sleeved or taken out, so that parts can be maintained and replaced conveniently.

To sum up, the utility model discloses following beneficial effect has: (1) The joint cover of the outer side of the boss on the end face of the connecting rod pin and the pin hole of the outer plate is provided with the locking plate, the taper of the pin hole of the inner plate provides an outward supporting force when the connecting rod pin generates an axial force, and the locking plate provides an inward supporting force when the connecting rod pin generates the axial force, so that the connecting rod pin is prevented from moving inwards and outwards along the axial direction, the running period of the runner is prolonged, the overhaul frequency of the runner is reduced, and the running stability of the hydraulic generator is improved. (2) The side face of the boss is attached to the side face of the locking plate, the boss interacts with the locking plate, and the locking plate is fixed with the outer side connecting plate through the bolt to prevent the relative rotation of the connecting rod pin and the outer side plate. (3) Adopt the form of locking plate and bolt fastening, can overhaul, change the part in the internal finite space of runner, have maneuverability, avoid adopting the fixed mode of screwing up the screw, satisfy the steady operation needs, and later stage overhauls and maintains the convenience, the maintenance cycle of the runner operating system that has significantly reduced.

Drawings

Fig. 1 is a schematic cross-sectional view of a runner link mechanism of a bulb turbine according to an embodiment of the present invention.

Fig. 2 is a schematic view of an upper surface structure of a rotating wheel link mechanism of a bulb tubular turbine according to an embodiment of the present invention.

In the figure: 1. the connecting device comprises an outer connecting plate 2, an inner connecting plate 3, a connecting rod pin 31, a boss 32, an upper end 33, a lower end 4, a locking plate 41, a bolt 5, a connecting pin shaft sleeve 6 and a taper hole.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

The embodiment is as follows:

the bulb tubular turbine runner connecting rod mechanism shown in fig. 1 to 2 comprises an inner connecting plate 2, an outer connecting plate 1 and a connecting rod pin 3, wherein an outer plate pin hole is formed in the outer connecting plate 1, an inner plate pin hole is formed in the inner connecting plate 2, the inner plate pin hole is a taper hole 6, the inner diameter of the inner side of the inner plate pin hole is larger than that of the outer side of the inner plate pin hole, a taper section is arranged at the lower end 33 of the connecting rod pin 3, the outer diameter of the upper edge of the taper section is smaller than that of the lower edge of the taper section, the lower end 33 of the connecting rod pin 3 is matched with the inner plate pin hole, the upper end 32 of the connecting rod pin 3 is sleeved with the outer plate pin hole, a boss 31 is formed in the middle of the upper end 32 of the connecting rod pin 3 in a protruding mode, the boss 31 is square, the boss 31 is arranged in the middle of the upper surface of the connecting rod pin 3, the locking plate 4 is round, the thickness of the locking plate 4 is the same as the height of the square boss 31, a square through hole is arranged in the middle of the locking plate 4, the square through hole, and the shape of the square through hole is matched with the boss 31, and the outer diameter of the locking plate 4 is larger than that of the outer plate pin hole.

The joint between the outer side of the boss 31 on the end face of the connecting rod pin 3 and the pin hole of the outer plate is covered with a locking plate 4, a plurality of bolts 41 are arranged on the locking plate 4, the plurality of bolts 41 are distributed around a concentric circle with the excircle of the locking plate 4, the inner diameter of the concentric circle is larger than the inner diameter of the pin hole of the outer plate, and the inner diameter and the outer diameter of the concentric circle are smaller than the outer diameter of the excircle of the locking plate 4. The locking plate 4 and the outer connecting plate 1 are fixed by bolts 41 penetrating through holes of the bolts 41. The pin body between the upper end 32 and the lower end 33 of the connecting rod pin 3 is sleeved with a connecting pin shaft sleeve 5, the upper edge of the connecting pin shaft sleeve 5 is attached to the inner wall of the outer side connecting plate 1, and the lower edge of the connecting pin shaft sleeve 5 is attached to the outer wall of the inner side connecting plate 2 and fixed through a set screw.

During installation, the lower end 33 of the connecting rod pin 3 penetrates through the outer plate pin hole after being sleeved from the upper part of the outer plate pin hole and then is sleeved with the inner plate pin hole below, the taper of the inner plate pin hole provides outward supporting force when the connecting rod pin 3 generates axial force, the locking plate 4 provides inward supporting force when the connecting rod pin 3 generates axial force, the connecting rod pin 3 is prevented from moving inwards and outwards along the axial direction, meanwhile, the boss 31 and the locking plate 4 interact to prevent the connecting rod pin 3 and the outer side plate from rotating relatively, and the taper arranged on the inner plate pin hole plays a role in preventing the connecting rod pin 3 and the inner side connecting plate 2 from rotating relatively. Above-mentioned structure has solved the relative rotation and the relative slip problem between interior outside even board 1 and connecting rod round pin 3, has prolonged the operating cycle of runner, has reduced the maintenance frequency of runner, has improved hydraulic generator's operating stability, takes considerable economic benefits for the power station. Adopt the fixed form of locking plate 4 and bolt 41, can overhaul, change the part in the internal finite space of runner, have maneuverability, avoid adopting the fixed mode of screwing up the screw, satisfy the steady operation needs, and later stage overhauls and maintains the convenience, the runner operating system's that has significantly reduced maintenance cycle.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms outboard tie plate, inboard tie plate, link pin, boss, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a novel runner link mechanism, characterized by, links board and connecting rod round pin including inboard even board, the outside is equipped with the planking pinhole on linking the board, inboard is equipped with the inner panel pinhole on linking the board, the inner panel pinhole is the tapering hole, connecting rod round pin lower extreme and inner panel pinhole phase-match, connecting rod round pin upper end cup joints with the planking pinhole, connecting rod round pin lower extreme cup joints with the inner panel pinhole, the protruding boss that forms in connecting rod round pin up end middle part, the connecting rod round pin terminal surface boss outside is equipped with the locking board with the seam crossing lid in planking pinhole, the locking board passes through the bolt fastening with the board even outside.

2. The novel rotary wheel connecting rod mechanism as claimed in claim 1, wherein the boss is square, the boss is arranged in the middle of the upper surface of the connecting rod pin, the locking plate is circular, a square through hole is arranged in the middle of the locking plate, the shape of the square through hole is matched with that of the boss, and the outer diameter of the locking plate is larger than the inner diameter of the pin hole of the outer plate.

3. The novel rotary wheel connecting rod mechanism as claimed in claim 1 or 2, wherein the locking plate is provided with a plurality of bolt holes, the bolt holes are distributed around a concentric circle with the outer circle of the locking plate, the inner diameter of the concentric circle is larger than that of the pin hole of the outer plate, and the inner diameter and the outer diameter of the concentric circle are smaller than the outer diameter of the outer circle of the locking plate.

4. The novel rotating wheel connecting rod mechanism as claimed in claim 3, wherein the inner round hole of the inner plate pin hole has an inner diameter larger than that of the outer round hole, the lower end of the connecting rod pin is provided with a tapered section, and the outer diameter of the upper edge of the tapered section is smaller than that of the lower edge.

5. The novel rotating wheel connecting rod mechanism as claimed in claim 4, wherein the pin body between the upper end and the lower end of the connecting rod pin is sleeved with a connecting pin shaft sleeve, the upper edge of the connecting pin shaft sleeve is attached to the inner wall of the outer connecting plate, and the lower edge of the connecting pin shaft sleeve is attached to the outer wall of the inner connecting plate and fixed through a set screw.

6. The novel wheel linkage as claimed in claim 5, wherein the locking plate thickness is the same as the square boss height.

7. The novel wheel linkage as claimed in claim 6, wherein the outer diameter of the upper end of the connecting rod pin radially matches the inner diameter of the outer plate pin hole.