CN219366116U

CN219366116U - Locking device for locking plate of power turbine

Info

Publication number: CN219366116U
Application number: CN202320537175.0U
Authority: CN
Inventors: 许文科; 姜永健; 孙鸿翔; 李辉全; 翟启阳
Original assignee: Qingdao Zhongke Guosheng Power Technology Co ltd
Current assignee: Qingdao Zhongke Guosheng Power Technology Co ltd
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-07-18
Anticipated expiration: 2033-03-17

Abstract

The utility model relates to a locking device for a locking plate of a power turbine, and belongs to the technical field of power turbine installation. The pressing plates are symmetrically arranged, the pressing heads are detachably arranged at the head ends of the two pressing plates close to each other, the two pressing plates are hinged through a pin shaft, and the tail ends of the two pressing plates are connected through a telescopic device. The utility model ensures the consistency of the bending degree of the locking plate, reduces the labor intensity of workers and improves the production efficiency.

Description

Locking device for locking plate of power turbine

Technical Field

The utility model relates to a locking device for a locking plate of a power turbine, and belongs to the technical field of power turbine installation.

Background

When the power turbine is assembled, after the power turbine blades are installed in the mortises of the power turbine disk, locking plates are required to be used for axially fixing the blades in the mortises. When in installation, the blade is installed in a mortise of the wheel disc, the locking plate is installed in a gap between the mortise of the power turbine disc and the blade, the locking plate is bent, and the blade is axially fixed; and after the locking plate is bent, the axial movement of the blade is strictly limited, the axial movement is usually required to be small, and the axial movement of the same-stage blade is kept to be consistent.

In the traditional installation process, the power turbine blade is installed in a turbine disc mortise, and after the locking plate is installed, the locking plate is fixed by hammering through a copper bar and a hammer, so that the locking plate is bent and deformed. Because the locking plate is hammered for many times, the locking plate is subjected to many impact forces, so that fatigue and damage are easily generated at the bending part of the locking plate, and the service life of the locking plate is influenced; and the sizes of the plurality of locking plates after bending are not uniform, so that the axial movement of the blades is greatly different, the bending degree of the locking plates is consistent, higher requirements are provided for the technical level of workers, and meanwhile, the labor intensity of the workers is high and the production efficiency is low.

Disclosure of Invention

The utility model aims to solve the technical problems that: overcomes the defects of the prior art, provides a locking device of a locking plate of a power turbine, ensures the consistency of the bending degree of the locking plate, reduces the labor intensity of workers and improves the production efficiency.

The locking device of the locking plate of the power turbine comprises symmetrically arranged pressing plates, wherein the pressing heads are detachably arranged at the head ends of the two pressing plates close to each other, the two pressing plates are hinged through a pin shaft, and the tail ends of the two pressing plates are connected through a telescopic device.

The pressing plate extends from the tail end to the head end to be arranged in a wedge shape.

The pressure head include the briquetting, the briquetting tail end outwards extends and sets up the fixture block, the fixture block is the dovetailed form, the clamping groove is set up to the fixture block that corresponds of clamp plate head end, clamping groove and fixture block appearance looks adaptation, the briquetting passes through fixture block and clamp plate head end joint.

The telescopic device comprises a telescopic driving mechanism, and output ends at two ends of the telescopic driving mechanism are connected with the pressing plate through connecting seats.

The telescopic driving mechanism is a hydraulic cylinder.

The connecting seat is hinged with the pressing plate through a pin.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model adopts an automatic compaction mode, realizes the uniformity of the size of the bent locking plates at the same level, ensures the uniformity of the axial movement of the locking plates at the same level, has simple and convenient operation, reduces the dependence on the technical level of workers, reduces the labor intensity and greatly improves the production efficiency. Adopt the pneumatic cylinder to lock the locking plate, hydraulic pressure compresses tightly the process steadily, and pressure is controllable, and once compresses tightly in place, and the locking plate is difficult to produce the damage and influence life to can realize the installation of turbine disk and turbine blade of different grades through changing the pressure head, increase the application range of equipment, reduced manufacturing cost.

Drawings

FIG. 1 is a schematic diagram showing the front view structure of embodiment 1 of the present utility model;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1 at A;

fig. 3 is a schematic view of the working state structure of the present utility model.

In the figure: 1. a pressing plate; 2. a handle; 3. a pin shaft; 4. a pressure head; 41. briquetting; 42. a clamping block; 5. a pin; 6. a connecting seat; 7. a connecting plate; 8. a telescopic driving mechanism; 9. a power turbine disk; 10. a locking plate; 11. a power turbine blade.

Detailed Description

The utility model is further described below with reference to examples:

example 1

As shown in fig. 1-3, the locking device of the locking plate of the power turbine comprises symmetrically arranged pressing plates 1, wherein the pressing plates 1 extend from the tail end to the head end to be in a wedge-shaped arrangement, handles 2 are arranged on the sides, away from each other, of the two pressing plates 1, the handles 2 are close to the tail parts of the pressing plates 1, pressure heads 4 are detachably arranged at the head ends, close to the sides, of the two pressing plates 1, of the pressing plates 4 comprise pressure blocks 41, clamping blocks 42 are outwards extended from the tail ends of the pressure blocks 41, the clamping blocks 42 are in a dovetail shape, clamping grooves are formed in the head ends of the pressing plates 1 corresponding to the clamping blocks 42, the clamping grooves are matched with the shape of the clamping blocks 42, and the pressure blocks 41 are clamped with the head ends of the pressing plates 1 through the clamping blocks 42; the two pressing plates 1 are inwards extended towards the opposite sides of the tail parts, the two connecting plates 7 are hinged through the pin shafts 3, and the tail ends of the two pressing plates 1 are connected through a telescopic device.

The telescopic device comprises a telescopic driving mechanism 8, the telescopic driving mechanism 8 is a hydraulic cylinder, output ends at two ends of the telescopic driving mechanism 8 are connected with the pressing plate 1 through connecting seats 6, and the connecting seats 6 are hinged with the pressing plate 1 through pins 5.

Working process and working principle:

when the power turbine locking plate 10 is installed, firstly, the power turbine blade 11 is installed in a mortice of the power turbine disk 9, the locking plate 10 is of an L-shaped structure with one end pre-bent, one end of the locking plate 10 which is not bent is inserted into a gap between the power turbine blade 11 and the mortice of the power turbine disk 9, two pressure heads 4 are aligned to the upper end and the lower end of the locking plate 10, a specified hydraulic pressure force is applied to a hydraulic cylinder, under the action of the hydraulic pressure force, a piston rod of the hydraulic cylinder stretches out to drive two connecting seats 6 to be separated up and down, so that the tail ends of the two pressure plates 1 are driven to move outwards around a pin shaft 3, the head ends of the two pressure plates 1 are driven to move inwards around the pin shaft 3, the two pressure heads 4 are driven to press the locking plate 10, the locking plate 10 is pressed to be attached to the end face of the blade, and the blade is axially fixed. According to different power turbine discs, power turbine blades and locking plates, a matched pressure head is selected.

The description of the directions and the relative positional relationships of the structures, such as the description of the front, back, left, right, up and down, in the present utility model does not limit the present utility model, but is merely for convenience of description.

Claims

1. The utility model provides a power turbine locking plate locking device, its characterized in that, including clamp plate (1) that the symmetry set up, the head end that two clamp plates (1) are close to the side each other can be dismantled and set up pressure head (4), and one side that two clamp plates (1) keep away from each other sets up handle (2), articulates through round pin axle (3) between two clamp plates (1), and two clamp plate (1) tail end passes through telescoping device hookup.

2. The power turbine blade locking device of claim 1, wherein the pressure plate (1) extends in a wedge-shaped arrangement from the trailing end to the leading end.

3. The locking device of the locking plate of the power turbine according to claim 1, wherein the pressure head (4) comprises a pressing block (41), a clamping block (42) is arranged at the tail end of the pressing block (41) in an outward extending mode, the clamping block (42) is in a dovetail shape, a clamping groove is formed in the head end of the pressing plate (1) corresponding to the clamping block (42), the clamping groove is matched with the shape of the clamping block (42), and the pressing block (41) is clamped with the head end of the pressing plate (1) through the clamping block (42).

4. A locking device for a locking plate of a power turbine blade according to any one of claims 1-3, characterized in that the telescopic device comprises a telescopic driving mechanism (8), the output ends of the two ends of the telescopic driving mechanism (8) being connected with the pressing plate (1) through a connecting seat (6).

5. The power turbine blade locking device of claim 4 wherein the telescoping drive mechanism (8) is a hydraulic cylinder.

6. The locking device of a power turbine blade according to claim 4, characterized in that the connection seat (6) is hinged to the pressure plate (1) by means of a pin (5).