CN219796780U - Liftable brake base device of large-scale hydraulic generator - Google Patents

Abstract

The lifting brake base device of the large hydraulic generator comprises a bottom plate, an inner cylinder, an outer cylinder and a base lifting cylinder, wherein a brake is arranged on the upper end surface of the bottom plate, the inner cylinder and the base lifting cylinder are vertically arranged on the lower end surface of the bottom plate, and the inner cylinder is arranged in the lifting cylinder and is coaxial with the lifting cylinder; the lower part of the bottom plate is vertically provided with a lifting screw rod and an outer cylinder, the lifting cylinder is sleeved on the outer side of the lifting screw rod and vertically slides along the outer wall of the lifting screw rod, and the outer side of the inner cylinder is in sliding connection with the inner wall of the outer cylinder; according to the utility model, the liftable brake base is designed according to the structural characteristics of the brake base and the limitation of the lower wind tunnel space, so that the brake can be disassembled and maintained under the condition of not dismantling the brake, and the personal safety of a maintenance worker is ensured, and the overall maintenance efficiency is improved.

Description

Liftable brake base device of large-scale hydraulic generator

Technical Field

The utility model relates to the field of hydropower station overhaul devices, in particular to a lifting brake base device of a large-sized hydraulic generator.

Background

In the shutdown process of the hydraulic generator, the shutdown time can be effectively reduced through the braking of the brake, so that the overheating and tile burning phenomena caused by friction of guide bearings of the unit under low rotation speed are reduced. The brake used by the existing water turbine is an air brake, which is arranged below the rotor side by side, and once the brake fails, the hydraulic generator is normally stopped.

The brake can have internal air leakage, oil leakage and other faults in the operation process, once the faults occur, the brake needs to be timely detached and the sealing strips in the brake are replaced, because the weight of the single brake is heavy, and the construction working space is limited by the influences of parts such as an external circulation oil pipe, a wind shield support frame, a wire passing bridge, an air seal pipe and the like, lifting equipment cannot be installed and used, so that the wind brake is extremely inconvenient to disassemble and assemble, safety accidents are easily caused in the disassembly and assembly process, and serious threat is brought to equipment and personnel safety

Disclosure of Invention

In view of the technical problems existing in the background art, the lifting brake base device for the large hydraulic generator provided by the utility model is characterized in that the lifting brake base is designed according to the structural characteristics of the brake base in combination with the limitation of the lower wind tunnel space, so that the brake can be disassembled and maintained under the condition of not dismantling the brake, and the personnel safety of overhauling workers is ensured, and meanwhile, the overall overhauling efficiency is also improved.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the lifting brake base device of the large hydraulic generator comprises a bottom plate, an inner cylinder, an outer cylinder and a base lifting cylinder, wherein a brake is arranged on the upper end surface of the bottom plate, the inner cylinder and the base lifting cylinder are vertically arranged on the lower end surface of the bottom plate, and the inner cylinder is arranged in the lifting cylinder and is coaxial with the lifting cylinder;

the lifting screw rod and the outer cylinder are vertically arranged below the bottom plate, the lifting cylinder is sleeved on the outer side of the lifting screw rod and vertically slides along the outer wall of the lifting screw rod, and the outer side of the inner cylinder is connected with the inner wall of the outer cylinder in a sliding mode.

In the preferred scheme, the lateral part of bottom plate is equipped with the connecting plate, and a plurality of bottom plates pass through the connecting plate and splice each other.

In the preferred scheme, the lifting assembly is sleeved on the lifting screw rod, the lower end of the lifting screw rod is connected with the lifting mechanism, the lifting mechanism drives the lifting screw rod to rotate around the axis of the lifting screw rod so as to drive the lifting assembly to slide up and down, and the lifting assembly is fixedly connected with the lower end of the lifting cylinder.

In the preferred scheme, the both sides of inner tube are equipped with the slide rail, and the inner wall department of urceolus corresponds and is provided with the spout, the slide rail joint is in the spout and makes the inner tube spacing slip along the spout.

In the preferred scheme, the both sides of inner tube are equipped with the second cardboard, and the draw-in groove has been seted up to the both sides correspondence of urceolus, the draw-in groove both sides are provided with first cardboard perpendicularly, have correspondingly seted up spacing hole on first cardboard and the second cardboard, and the height lock of second cardboard and inner tube is fixed after spacing bolt passes spacing hole.

The following beneficial effects can be achieved in this patent:

1. the device can firstly descend the brake during overhauling by the lifting mechanism, so that the occurrence rate of safety accidents is reduced, and the personal safety of overhaulers is ensured;

2. the device can easily lift the brake with high weight, and when the brake is completely lowered, the brake can be detached and replaced by pushing the trolley through the gantry crane, so that the maintenance efficiency of the brake can be greatly improved.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a plan side view of the overall structure of the present utility model;

FIG. 2 is an enlarged schematic view of the connecting structure of the inner and outer cylinders of the present utility model;

FIG. 3 is a schematic view of the structure of the inner and outer cylinder clamping plates of the present utility model.

In the figure: the brake 1, the bottom plate 2, the connecting plate 3, the inner cylinder 4, the lifting cylinder 5, the lifting screw rod 6, the lifting mechanism 7, the lifting assembly 8, the outer cylinder 9, the sliding chute 10, the sliding rail 11, the first clamping plate 12, the second clamping plate 13, the limiting hole 14, the limiting bolt 15 and the clamping groove 16.

Detailed Description

As shown in fig. 1, a lifting brake base device of a large hydraulic generator comprises a bottom plate 2, an inner cylinder 4, an outer cylinder 9 and a base lifting cylinder 5, wherein a brake 1 is arranged on the upper end surface of the bottom plate 2, the inner cylinder 4 and the base lifting cylinder 5 are vertically arranged on the lower end surface of the bottom plate 2, and the inner cylinder 4 is arranged inside the lifting cylinder 5 and is coaxial with the lifting cylinder 5;

the below of bottom plate 2 is provided with lift lead screw 6 and urceolus 9 perpendicularly, lift section of thick bamboo 5 cup joints in the outside of lift lead screw 6 and slides perpendicularly along the outer wall of lift lead screw 6, and the inner wall sliding connection of inner tube 4 outside and urceolus 9 can descend it earlier and overhaul when needs overhauld stopper 1, and the lead screw lift technique is very mature, can easily go up and down the heavy object of very big load, can save a large amount of manpowers, improves maintenance efficiency.

The preferable scheme is as shown in fig. 1, the side part of the bottom plate 2 is provided with a connecting plate 3, a plurality of bottom plates 2 are mutually spliced through the connecting plate 3, when the brake 1 and the bottom plate 2 are required to be lowered, the connecting plate 3 can be loosened first, and the functions of separating and independently lifting the brake 1 are realized.

The preferable scheme is as shown in fig. 1, a lifting assembly 8 is sleeved on the lifting screw rod 6, the lower end of the lifting screw rod 6 is connected with a lifting mechanism 7, and the lifting assembly 8 is fixedly connected with the lower end of the lifting cylinder 5;

the lifting mechanism 7 is provided with a rotating wheel, the lifting screw rod 6 can be driven to rotate around the axis of the lifting screw rod 6 by rotating the rotating wheel during operation of the device, the lifting screw rod 6 is rotated to drive the lifting assembly 8 to vertically slide up and down along the outer wall of the lifting screw rod 6, and then the lifting cylinder 5 and the bottom plate 2 are driven to synchronously slide, so that the lifting control function of the brake 1 is realized.

The preferable scheme is as shown in fig. 2, the two sides of the inner cylinder 4 are provided with sliding rails 11, the inner wall of the outer cylinder 9 is correspondingly provided with sliding grooves 10, the sliding rails 11 are clamped in the sliding grooves 10 and enable the inner cylinder 4 to slide along the sliding grooves 10 in a limiting manner, and then stability in the lifting process of the device is improved.

As shown in fig. 2, the preferred scheme is that two sides of an inner cylinder 4 are provided with second clamping plates 13, two sides of an outer cylinder 9 are correspondingly provided with clamping grooves 16, two sides of each clamping groove 16 are vertically provided with a first clamping plate 12, the first clamping plate 12 and the second clamping plate 13 are correspondingly provided with limiting holes 14, and limiting bolts 15 are arranged in the limiting holes 14;

after the heights of the bottom plate 2 and the brake 1 are adjusted through the lifting mechanism 7, the limiting bolts 15 penetrate through the limiting holes 14 on the first clamping plate 12 and the second clamping plate 13, so that the heights of the bottom plate 2 and the brake 1 can be locked and fixed, the stability of the device in the subsequent maintenance process is further improved, and safety accidents caused by the fact that the brake 1 slides down are prevented.

The above embodiments are only preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the scope of the present utility model should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.

Claims (5)

1. The utility model provides a large-scale hydraulic generator liftable stopper base device, includes bottom plate (2), inner tube (4), urceolus (9) and base lift section of thick bamboo (5), its characterized in that: the brake (1) is arranged on the upper end face of the bottom plate (2), an inner cylinder (4) and a base lifting cylinder (5) are vertically arranged on the lower end face of the bottom plate (2), and the inner cylinder (4) is arranged inside the lifting cylinder (5) and is coaxial with the lifting cylinder (5);

the lifting screw rod (6) and the outer cylinder (9) are vertically arranged below the bottom plate (2), the lifting cylinder (5) is sleeved on the outer side of the lifting screw rod (6) and vertically slides along the outer wall of the lifting screw rod (6), and the outer side of the inner cylinder (4) is connected with the inner wall of the outer cylinder (9) in a sliding mode.

2. The large hydraulic generator liftable brake base device of claim 1, wherein: the lateral part of bottom plate (2) is equipped with connecting plate (3), and a plurality of bottom plates (2) splice each other through connecting plate (3).

3. The large hydraulic generator liftable brake base device of claim 1, wherein: the lifting screw rod (6) is sleeved with a lifting assembly (8), the lower end of the lifting screw rod (6) is connected with a lifting mechanism (7), the lifting mechanism (7) drives the lifting screw rod (6) to rotate around the axis of the lifting screw rod to drive the lifting assembly (8) to slide up and down, and the lifting assembly (8) is fixedly connected with the lower end of the lifting cylinder (5).

4. The large hydraulic generator liftable brake base device of claim 1, wherein: slide rails (11) are arranged on two sides of the inner cylinder (4), sliding grooves (10) are correspondingly arranged on the inner wall of the outer cylinder (9), and the slide rails (11) are clamped in the sliding grooves (10) and enable the inner cylinder (4) to slide in a limiting mode along the sliding grooves (10).

5. The large hydraulic generator liftable brake base device of claim 1, wherein: the both sides of inner tube (4) are equipped with second cardboard (13), and draw-in groove (16) have been seted up to the both sides correspondence of urceolus (9), draw-in groove (16) both sides are provided with first cardboard (12) perpendicularly, and spacing hole (14) have been seted up to correspondence on first cardboard (12) and second cardboard (13), and spacing bolt (15) pass behind spacing hole (14) with the high lock of second cardboard (13) and inner tube (4) and dead fixedly.