CN214570284U

CN214570284U - Thermal power factory building boiler overhauls device

Info

Publication number: CN214570284U
Application number: CN202120579513.8U
Authority: CN
Inventors: 曹伟
Original assignee: Huaneng Luoyuan Power Generation Co Ltd
Current assignee: Huaneng Luoyuan Power Generation Co Ltd
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2021-11-02
Anticipated expiration: 2031-03-22

Abstract

The utility model discloses a boiler maintenance device for a thermal power plant, which comprises a lifting platform, a suspension arm, a maintenance platform, a winch and a steel rope; the maintenance platform is provided with a turntable; the circumferential end of the rotary table is provided with at least one multi-stage telescopic pedal along the radial direction. The utility model has the advantages that: through set up the flexible footboard of multistage on overhauing the platform, make the flexible footboard of multistage can stretch out to overhauing outside the platform, the length of platform is overhauld in the extension, and the maintainer of being convenient for is close to the boiler inner wall, and this kind is near need not adjust to overhaul the position of platform for the davit, overhauls the platform and can be in relatively steady state all the time, can effectively improve maintenance efficiency. In addition, under the effect of carousel, multistage flexible footboard can rotate to arbitrary position in the horizontal plane to reduce the quantity of multistage flexible footboard, reduce the weight of overhauing the platform.

Description

Thermal power factory building boiler overhauls device

Technical Field

The utility model belongs to the technical field of the boiler overhauls, especially, relate to a thermal power factory building boiler overhauls device.

Background

The boiler of thermal power factory is darker, and the boiler internal diameter is great, when overhauing the boiler inside, need utilize the gallows with maintainer from boiler top access hole handling to the boiler in order to overhaul the operation to the boiler inside. And in order to overhaul convenience and overhaul operation safety, an overhaul platform with the area smaller than the boiler overhaul port is hoisted into the boiler usually, and an overhaul worker carries out overhaul operation on the overhaul platform. But actually, the boiler internal diameter is usually bigger than the access hole bore, leads to near the maintenance platform that gets into from the access hole is difficult to reach the boiler inner wall, needs the manual setting up screw ladder again or adjusts the maintenance platform position, and this kind of mode can reduce maintenance efficiency, also has the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defect that near boiler inner wall is not convenient for reach by the maintenance platform of current boiler maintenance device, provide a simple structure, but the maintenance platform part extends to near the thermal power factory building boiler maintenance device of boiler inner wall.

In order to achieve the purpose, the utility model relates to a thermal power factory building boiler overhauls device, including elevating platform, locate the davit on the elevating platform, hang in the terminal maintenance platform of davit, locate the hoist engine on the davit and connect the hoist engine with the steel cable of maintenance platform; a turntable is horizontally arranged in the center of the maintenance platform; at least one multi-stage telescopic pedal is arranged at the circumferential end of the rotary table along the radial direction; the multi-stage telescopic pedals are arranged on the upper end face of the maintenance platform and comprise a first-stage pedal and a second-stage pedal which are horizontally stacked from bottom to top; the upper end of the maintenance platform and the upper end of the first-stage pedal are respectively provided with a sliding chute; the lower end of the first-stage pedal and the lower end of the second-stage pedal are respectively provided with a sliding block; the sliding groove on the maintenance platform is matched with the sliding block on the first-stage pedal, and the sliding groove on the first-stage pedal is matched with the sliding block on the second-stage pedal; two sides of the sliding groove are provided with inwards concave limiting grooves which are parallel to the sliding groove; two opposite sides of the sliding block are provided with convex limiting parts, and the limiting parts are matched with the limiting grooves.

Furthermore, the radial direction symmetry of carousel is equipped with two multistage flexible footboard.

Furthermore, the up end of overhauing the platform is circular terminal surface, just the vertical pivot central line of carousel with the centre of a circle coincidence of the up end of overhauing the platform.

Further, the maintenance device further comprises a hanging bracket; the hanging bracket comprises a plurality of vertical frames uniformly arranged along the circumferential direction of the maintenance platform and a cross beam for connecting two adjacent vertical frames; the lower end of the vertical frame is welded and fixed with the upper end of the maintenance platform; the steel rope is connected with the hanging bracket. The gallows makes the steel cable rise with the connected node who overhauls the platform, avoids the maintenance in-process mistake to bump the steel cable and leads to the steel cable swing or rock and cause and overhaul rocking of platform, and the gallows also can improve the bulk rigidity who overhauls the platform.

Further, the steel rope comprises a main rope and a plurality of lifting ropes; the tail end of the suspension arm is provided with a guide wheel; one end of the main rope is connected with the winch, and the other end of the main rope bypasses the guide wheel and is connected with a hanging ring; the lifting rings are connected with the plurality of lifting ropes; the other ends of the lifting ropes are respectively connected with the upper end of the vertical frame; the lifting ring and the center of gravity of the maintenance platform are located on the same vertical line. The tail end of the steel rope is divided into a plurality of lifting ropes, the lifting ropes are respectively connected with the evenly arranged vertical frames, and the lifting rings at the upper ends of the lifting ropes and the gravity center of the maintenance platform are positioned on the same vertical line, so that the maintenance platform can be kept stable in the suspension process.

The utility model has the advantages that: through set up the flexible footboard of multistage on overhauing the platform, make the flexible footboard of multistage can stretch out to overhauing outside the platform, the length of platform is overhauld in the extension, and the maintainer of being convenient for is close to the boiler inner wall, and this kind is near need not adjust to overhaul the position of platform for the davit, overhauls the platform and can be in relatively steady state all the time, can effectively improve maintenance efficiency. In addition, under the effect of carousel, multistage flexible footboard can rotate to arbitrary position in the horizontal plane to reduce the quantity of multistage flexible footboard, reduce the weight of overhauing the platform.

Drawings

Fig. 1 is the utility model discloses a thermal power factory building boiler overhauls device's main structure schematic view.

Fig. 2 is a schematic top view of the service platform of fig. 1.

Fig. 3 is a schematic structural view of the multi-stage retractable pedal in fig. 2 after being retracted.

Fig. 4 is a perspective view of the first step in fig. 3.

Fig. 5 is a perspective view of the rear view of the first step in fig. 4.

In the figure, an elevating platform 1, a suspension arm 2, an overhaul platform 3, a winch 4, a rotary table 5, a multi-stage telescopic pedal 6, a first-stage pedal 7, a second-stage pedal 8, a sliding groove 9, a sliding block 10, a limiting groove 11, a limiting part 12, a cross beam 13, a vertical frame 14, a main rope 15, a lifting rope 16 and a guide wheel 17.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments.

The boiler maintenance device for the thermal power plant as shown in fig. 1 to 5 comprises a lifting platform 1, a suspension arm 2 arranged on the lifting platform 1, a maintenance platform 3 suspended at the tail end of the suspension arm 2, a winch 4 arranged on the suspension arm 2 and a steel rope connecting the winch 4 and the maintenance platform 3; a rotary table 5 is horizontally arranged in the center of the maintenance platform 3; at least one multi-stage telescopic pedal 6 is arranged at the circumferential end of the rotary table 5 along the radial direction; the multi-stage telescopic pedals 6 are arranged on the upper end face of the maintenance platform 3, and the multi-stage telescopic pedals 6 comprise a first-stage pedal 7 and a second-stage pedal 8 which are horizontally stacked from bottom to top; the upper end of the maintenance platform 3 and the upper end of the first-stage pedal 7 are respectively provided with a sliding chute 9; the lower end of the first-stage pedal 7 and the lower end of the second-stage pedal 8 are respectively provided with a slide block 10; a chute 9 on the maintenance platform 3 is matched with a slide block 10 on the first-stage pedal 7, and the chute 9 on the first-stage pedal 7 is matched with a slide block 10 on the second-stage pedal 8; two sides of the sliding groove 9 are provided with concave limiting grooves 11, and the limiting grooves 11 are parallel to the sliding groove 9; two opposite sides of the sliding block 10 are provided with convex limiting parts 12, and the limiting parts 12 are matched with the limiting grooves 11.

Referring to fig. 2 and 3, two multi-stage retractable pedals 6 are symmetrically arranged in the radial direction of the turntable 5 in the present embodiment.

The upper end face of the maintenance platform 3 is a circular end face, and the center line of the vertical rotating shaft of the rotating disc 5 coincides with the circle center of the upper end face of the maintenance platform 3. The maintenance platform 3 can be a hollow cake-shaped maintenance platform, the upper end surface and the lower end surface of the maintenance platform 3 are preferably metal mesh surfaces, and a plurality of reinforcing rib plates are arranged between the metal mesh surfaces of the upper end surface and the lower end surface to improve the rigidity of the maintenance platform 3. Of course, the inspection platform 3 may be a circular steel plate, and preferably has a thickness of 10 mm, and the rib plate is provided on the lower end surface of the inspection platform 3.

The maintenance device also comprises a hanging bracket; the hanging bracket comprises a plurality of vertical frames 14 uniformly arranged along the circumferential direction of the maintenance platform 3 and a cross beam 13 connecting two adjacent vertical frames 14, and the vertical frames 14 and the cross beam 13 are welded; the lower end of the vertical frame 14 is welded and fixed with the upper end of the maintenance platform 3; the steel rope is connected with the hanger. The steel rope comprises a main rope 15 and a plurality of lifting ropes 16; the tail end of the suspension arm 2 is provided with a guide wheel 17; one end of the main rope 15 is connected with the winch 4, and the other end of the main rope 15 bypasses the guide wheel 17 and is connected with a hanging ring; a plurality of lifting ropes 16 are connected to the lifting rings; the other ends of the lifting ropes 16 are respectively connected with the upper ends of the vertical frames 14; the centre of gravity of rings and maintenance platform 3 is in same vertical line.

The cooperation of gallows and many lifting ropes 16 can guarantee to overhaul platform 3 and be in steady state relatively, also can avoid many lifting ropes 16 to twine mutually, avoids overhauing the rotation of platform 3. The hanger can also avoid the deformation and distortion of the maintenance platform 3. The cross beams 13 and the uprights 14 of this embodiment are preferably channel steel or i-steel.

The lifting platform 1, the suspension arm 2 and the winch 4 adopt the conventional structures or the conventional finished products, and the embodiment does not limit the conventional structures or the conventional finished products.

Referring to fig. 3, 4 and 5, the extension length of the multi-stage retractable pedal 6 is selected according to the length to be extended, in order to ensure the safety, two parallel sliding grooves 9 are respectively arranged at the upper end of the maintenance platform 3 and the upper end of the first-stage pedal 7, and two parallel sliding blocks 10 are respectively arranged at the lower end of the first-stage pedal 7 and the lower end of the second-stage pedal 8. The slider 10 slides along the length direction of the sliding groove 9 in the sliding groove 9, and the limiting parts 12 on the two opposite sides of the slider 10 are embedded into the limiting grooves 11 on the two opposite sides of the sliding groove 9, so that the slider 10 cannot fall off from the sliding groove 9, namely when an overhaul person stands on the overhung first-stage pedal 7 or second-stage pedal 8, the limiting parts 12 abut against the limiting grooves 11, and the slider 10 is ensured to be always positioned in the sliding groove 9. In the present embodiment, the primary pedal 7 and the secondary pedal 8 are preferably steel plates, and the slider 10 is preferably a steel block.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that a person skilled in the art should also recognize that several modifications and decorations can be made without departing from the principle of the present invention, and the protection scope of the present invention is also covered.

Claims

1. A boiler maintenance device for a thermal power plant comprises a lifting platform, a suspension arm arranged on the lifting platform, a maintenance platform suspended at the tail end of the suspension arm, a winch arranged on the suspension arm and a steel rope connecting the winch and the maintenance platform; the method is characterized in that: a turntable is horizontally arranged in the center of the maintenance platform; at least one multi-stage telescopic pedal is arranged at the circumferential end of the rotary table along the radial direction; the multi-stage telescopic pedals are arranged on the upper end face of the maintenance platform and comprise a first-stage pedal and a second-stage pedal which are horizontally stacked from bottom to top; the upper end of the maintenance platform and the upper end of the first-stage pedal are respectively provided with a sliding chute; the lower end of the first-stage pedal and the lower end of the second-stage pedal are respectively provided with a sliding block; the sliding groove on the maintenance platform is matched with the sliding block on the first-stage pedal, and the sliding groove on the first-stage pedal is matched with the sliding block on the second-stage pedal; two sides of the sliding groove are provided with inwards concave limiting grooves which are parallel to the sliding groove; two opposite sides of the sliding block are provided with convex limiting parts, and the limiting parts are matched with the limiting grooves.

2. The thermal power plant boiler overhaul device of claim 1, which is characterized in that: the radial direction symmetry of carousel is equipped with two multistage flexible footboard.

3. The thermal power plant boiler overhaul device of claim 2, which is characterized in that: the up end of overhauing the platform is circular terminal surface, just the vertical pivot central line of carousel with the centre of a circle coincidence of the up end of overhauing the platform.

4. The thermal power plant boiler overhaul device of claim 3, which is characterized in that: the maintenance device further comprises a hanging bracket; the hanging bracket comprises a plurality of vertical frames uniformly arranged along the circumferential direction of the maintenance platform and a cross beam for connecting two adjacent vertical frames; the lower end of the vertical frame is welded and fixed with the upper end of the maintenance platform; the steel rope is connected with the hanging bracket.

5. The thermal power plant boiler overhaul device of claim 4, which is characterized in that: the steel rope comprises a main rope and a plurality of lifting ropes; the tail end of the suspension arm is provided with a guide wheel; one end of the main rope is connected with the winch, and the other end of the main rope bypasses the guide wheel and is connected with a hanging ring; the lifting rings are connected with the plurality of lifting ropes; the other ends of the lifting ropes are respectively connected with the upper end of the vertical frame; the lifting ring and the center of gravity of the maintenance platform are located on the same vertical line.