CN215760344U

CN215760344U - Suspension working platform

Info

Publication number: CN215760344U
Application number: CN202122181058.9U
Authority: CN
Inventors: 李德; 崔晓雷; 李小晖; 王媛; 刘长勇; 王滨南; 吉振川; 丁璐瑶
Original assignee: Sanmen Nuclear Power Co Ltd
Current assignee: Sanmen Nuclear Power Co Ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-02-08
Anticipated expiration: 2031-09-10

Abstract

The utility model relates to the technical field of hole construction, in particular to a suspension working platform, which comprises: the suspended ceiling frame is used for connecting the hanging device and forms an upper frame of the working platform; the underframe is arranged below the ceiling frame at intervals, and forms a bottom frame of the working platform; one end of the upright post member is connected with the ceiling frame, and the other end of the upright post member is connected with the bottom frame; the plurality of upright post pieces are distributed in the working platform at intervals in a surrounding manner so as to form a supporting frame of the working platform; the working platform at least comprises an annular maintenance channel, and the periphery of the annular maintenance channel is surrounded by a direct maintenance area of the inner wall of the hole. A hang work platform and once hang and to realize surrounding clearance of hole inner wall, only need the adjustment to hang the height moreover, need not change and hang the position and can maintain, clear up whole hole.

Description

Suspension working platform

Technical Field

The utility model relates to the technical field of hole construction, in particular to a suspension working platform.

Background

When the diameter of the hole is between 4 and 8 meters, the method of erecting a scaffold or using a hanging basket to provide a foot support for maintenance personnel is generally adopted. Taking a circulating water pump well of an AP1000 nuclear power station as an example, the diameter of the circulating water pump well is 5.5 meters, the depth of the circulating water pump well is up to 13.6 meters, the vertical surface of a bedplate of a hole needs to be subjected to anti-corrosion treatment during each overhaul, if a scaffold is erected, a large number of supports need to be consumed, the dismounting construction is complex, and the safety is low. The hanging basket mode is adopted, a bracket is not required to be arranged, and the hanging basket is simpler and more convenient; for example, the chinese utility model CN201921770928.2 discloses a liftable platform structure for chimney reinforcement construction, which comprises a plurality of mutually fixed suspension beams fixed on the top of the chimney, wherein two ends of the suspension beams extend out of the outer wall of the chimney; a suspension cage which is hung on the part of the suspension beam extending out of the outer wall of the chimney by using a suspension rope; and the adjusting equipment is arranged on the suspension cage, and the suspension rope is retracted through the adjusting equipment so as to adjust the height of the suspension cage.

However, if the liftable platform structure for chimney reinforcing construction is used for maintaining and cleaning the inner wall of the hole, some disadvantages still exist: most of the cages and hanging baskets commonly used in building construction at the present stage are square structures capable of accommodating 3 to 4 persons, the size of a maintenance area which can be contacted by maintenance personnel is certain during each hanging, and the hanging position needs to be changed continuously to realize the comprehensive cleaning of the whole wall surface; when the outer wall surface or the outer surface of the chimney is maintained and processed, the suspension cage is positioned in an open environment, the suspension position of the suspension cage is relatively easy to change, and excessive obstruction and limitation are avoided; however, when the hanging cage is in the hole, the hanging cage is in a state of being surrounded by four sides of the inner wall of the hole, the condition that the hanging cage collides the inner wall of the hole can be easily caused by changing the hanging position of the hanging cage, the inner wall of the hole can be damaged, and the life safety of maintenance personnel can be endangered.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a suspension working platform aiming at the defects of the prior art so as to solve the technical problems in the prior art; a hang work platform and once hang and to realize surrounding clearance of hole inner wall, only need the adjustment to hang the height moreover, need not change the level and hang the position and can maintain, clear up whole hole.

The technical solution of the utility model is as follows:

a suspended work platform comprising:

the suspended ceiling frame is used for connecting the hanging device and forms an upper frame of the working platform;

the underframe is arranged below the ceiling frame at intervals, and forms a bottom frame of the working platform;

one end of the upright post member is connected with the ceiling frame, and the other end of the upright post member is connected with the bottom frame; the plurality of upright post pieces are distributed in the working platform at intervals in a surrounding manner so as to form a supporting frame of the working platform;

the working platform at least comprises an annular maintenance channel, and the periphery of the annular maintenance channel is surrounded by a direct maintenance area of the inner wall of the hole.

Preferably, the upright post member comprises an outer ring upright post member and an inner ring upright post member;

the outer ring upright post pieces are close to the outer edge of the underframe, and the inner ring upright post pieces are arranged on the inner side of the outer ring upright post pieces at intervals and close to the middle area of the underframe;

the ceiling frame, the underframe, the outer ring upright post piece and the inner ring upright post piece jointly form an annular maintenance channel.

Preferably, the ceiling mount includes a main support and a secondary support, and the secondary support is attached to an upper surface of the main support.

Preferably, the main supporting piece is provided with a hanging ring part, and the main supporting piece is connected with the hanging device through the hanging ring part.

Preferably, the outer contour of the annular maintenance channel is a polygonal structure, and the inner contour of the annular maintenance channel is a polygonal right-angle support structure.

Preferably, the underframe is an annular structure with an octagonal outer contour and a quadrangular inner contour, and the annular structure is formed by sequentially and vertically connecting four installation frames with the same specification and right trapezoid outer contour; each vertex of the outer contour of the underframe is connected with one outer ring column piece, and each vertex of the inner contour of the underframe is connected with one inner ring column piece; the suspended ceiling frame, the underframe, the outer ring upright post piece and the inner ring upright post piece jointly form an annular maintenance channel with an octagonal cross section outer contour and a quadrangular inner contour.

Preferably, there is a difference in length between the diagonal frame and the outer straight frame of said mounting frame that participate in the outer contour of the underframe.

Preferably, the adjacent outer ring upright post pieces and the adjacent inner ring upright post pieces are connected through reinforcing railings.

Preferably, a ladder stand member is connected between at least one adjacent outer ring column member.

Preferably, at least the bottom of the outer ring upright post is provided with an anti-collision part facing outwards.

The utility model has the beneficial effects that:

1. the horizontal hanging position of the hanging working platform does not need to be changed frequently, the inner wall of the hole can be cleaned in a surrounding mode for 360 degrees through the annular maintenance channel only through once positioning and hanging, and the hanging type hole hanging device is convenient and efficient. And any corner of the inner wall of the hole can be maintained and cleaned by changing the height of the hanger, and the coverage area which can be cleaned is large.

2. The space between the maintenance channel and the inner wall of the hole can be respectively set aiming at the key maintenance position and the conventional cleaning position of the hole, and the maintenance and cleaning effects are improved.

3. The whole structure is stable in support and high in safety.

Drawings

The utility model is further described below with reference to the accompanying drawings:

fig. 1 is a schematic view of the overall assembly structure of the present invention.

Fig. 2 is a schematic view of the overall frame structure of the present invention.

Fig. 3 is a schematic view of an assembly structure of the mounting frame of the present invention.

Fig. 4 is a schematic view of the mounting frame structure of the present invention.

FIG. 5 is a schematic view of the construction of the outer ring post of the present invention.

Fig. 6 is a schematic top view of the assembly structure of the present invention.

Shown in the figure: a ceiling frame 1, a main support 101, a lifting ring part 1011 and a secondary support 102;

chassis 2, mounting frame 201, bevel frame 2011, outer straight frame 2012;

upright post member 3, outer ring upright post member 301, anti-collision part 3011, top connecting plate 3012, bottom connecting plate 3013, inner ring upright post member 302, ladder stand member 4, connecting plate 5 and support plate 6.

Detailed Description

The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. In addition, references to the terms "vertical," "horizontal," "top," "bottom," "front," "back," "upper," "lower," "inner," "outer," and the like in embodiments of the utility model are based on the orientation or positional relationship shown in FIG. 1, or the orientation or positional relationship in which the product is conventionally used, for convenience in describing and simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. It is further noted that, unless expressly stated or limited otherwise, terms such as "mounted," "connected," "secured," and the like are intended to be construed broadly, and thus, for example, "connected" may be fixedly, releasably, or integrally connected; either directly or indirectly through intervening media, or through both elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

A suspended work platform, with reference to figures 1 to 6, comprising:

the suspended ceiling frame 1 is used for connecting a hanging device, and the suspended ceiling frame 1 forms an upper frame of the working platform;

the underframe 2 is arranged below the suspended ceiling frame 1 at intervals, and the underframe 2 forms a bottom frame of the working platform;

one end of the upright post member 3 is connected with the ceiling frame 1, and the other end is connected with the bottom frame 2; a plurality of upright members 3 are distributed in the working platform at intervals and in a surrounding manner so as to form a supporting frame of the working platform;

Preferably, the working platform is a space area which is formed by the ceiling frame 1, the bottom frame 2 and the upright post 3 and used for accommodating maintenance personnel, and the maintenance personnel can walk in the working platform to clean different positions in the hole. Furthermore, the hoisting device is preferably a crane device commonly used in buildings, and is stable in hoisting; the suspension working platform can be suspended into a hole to be cleaned through a suspension device, for example, a circulating water pump well of an AP1000 nuclear power station with the diameter of 5.5 meters and the depth of 13.6 meters; when the hanging height is determined, maintenance personnel can walk in the annular maintenance channel to continuously change the cleaning position to realize 360-degree surrounding cleaning of the inner wall of the hole in a certain height range, and after the cleaning is finished, the hanging height can be changed through the hanging device to realize surrounding cleaning of the inner walls of the holes in other height ranges; and finally, the whole cleaning of the inner wall of the hole is finished. In the cleaning process, only the height of the hanger needs to be adjusted and changed, the operation is simple, and the cleaning efficiency is high.

Preferably, the directly repairable area of the inner wall of the hole is: when the hanging height of the hanging working platform is constant, the inner wall area of the hole can be maintained without moving the platform in the horizontal direction; specifically, the maintenance person stands on the annular maintenance channel and can directly access the inner wall area of the hole which can be cleaned through two hands or through a cleaning tool. Ideally, the outer contour of the annular maintenance channel is inscribed in the inner wall of the hole, so that the smaller the distance between the maintenance channel and the inner wall of the hole, the better the distance, and the more convenient the maintenance and the cleaning; however, due to the wear and scratch phenomena, a certain distance should be reserved between the outer contour of the annular service channel and the inner wall of the hole, and the size of the distance can be set by a person skilled in the art according to specific production conditions, and is not described in detail herein. Furthermore, the annular maintenance channel can be of an annular structure, and in an ideal state, the maintenance channel of the annular structure can be close to the inner wall of the hole as much as possible, so that maintenance and cleaning are more convenient and faster; however, the maintenance channel of the circular structure needs to be assembled with the circular base frame 2 and a plurality of circular arc-shaped railings, and the circular or circular arc-shaped structure is troublesome to manufacture, high in cost, high in assembly precision requirement and low in applicability to the suspended working platform with the diameter of 4-8 m. Therefore, considering the practicability, the cost and the manufacturing difficulty, the maintenance channel is preferably in a polygonal annular structure; taking a regular polygonal annular maintenance channel as an example, when the number of the edges of the maintenance channel is more and the maintenance channel is internally connected in the inner wall of the hole, the maximum distance between the outer contour of the annular maintenance channel and the inner wall of the hole is smaller, but the structure is more complex, and the assembly difficulty and the cost are higher; when the number of the edges of the maintenance channel is less, the maintenance channel is internally connected in the inner wall of the hole, the larger the maximum distance between the outer contour of the annular maintenance channel and the inner wall of the hole is, and the difficulty in maintenance and cleaning is higher. The skilled person will therefore need to combine the size of the holes, the spacing requirements between the holes and said service channels and cost considerations. For a circulating water pump well of an AP1000 nuclear power station with the diameter of 5.5 meters and the depth of 13.6 meters, through modeling and experiments for a limited time, the inventor prefers a maintenance channel with an octagonal annular structure, namely the outer contour of the annular maintenance channel is of an octagonal structure; and the whole platform is a detachable structure, and when the platform is not assembled, the storage area is about 5 square meters, so that the storage pressure is reduced. The platform is simple and convenient to process, the processing precision requirement is low, the precision is ensured to meet the requirement when the precision is 5mm in the processing and welding processes, the load is 300 kilograms per square meter according to the conversion of the plane projection area of the bottom platform, the deformation of the main beam is lower than 1/400 of the length of the beam, and the platform is safe and stable; the device can be quickly assembled on the ground, and is hung into a hole to be overhauled after the assembly is finished, so that the efficiency is high. The details are described below with reference to specific embodiments.

As an embodiment of the present invention, referring to fig. 1 to 6, the suspended working platform includes a ceiling frame 1, in this embodiment, the ceiling frame 1 is composed of two parallel-set main supporting pieces 101 and two parallel-set sub supporting pieces 102, and the main supporting pieces 101 and the sub supporting pieces 102 form a ceiling frame 1 with a # -shaped structure; further, the main supporting piece 101 and the secondary supporting piece 102 are preferably made of h-steel structures with good supporting performance, the stress weight of the suspended ceiling frame 1 is different according to the difference of hole size and diameter of 4-8 m, the size of the h-steel of the main supporting piece 101 is preferably 16# to 32#, and the size of the h-steel of the secondary supporting piece 102 is preferably 10# to 18 #. Further, the secondary support 102 is connected to the upper surface of the main support 101, and a hanging ring portion 1011 connected to the hanging device is disposed on the main support 101; when the connection between the main supporting piece 101 and the secondary supporting piece 102 is released, the secondary supporting piece 102 will fall down due to the gravity, and at this time, the main supporting piece 101 will support the secondary supporting piece 102, so as to avoid the safety accident caused by the direct falling of the secondary supporting piece 102. Still further, the main supporting piece 101 and the secondary supporting piece 102 are both fixedly connected with a connecting plate 5, and the connecting plate 5 is provided with an elongated screw hole; when the main supporting piece 101 and the secondary supporting piece 102 are assembled, the connecting plate 5 fixed on the main supporting piece 101 is correspondingly connected with the connecting plate 5 fixed on the secondary supporting piece 102, and the correspondingly connected screw holes are in a cross state, so that the screws can be assembled after a certain deviation is generated between the two correspondingly assembled connecting plates 5, the requirement on assembly precision is reduced, and the assembly method is more suitable for the assembly of large-diameter devices.

Preferably, the outer contour of the annular maintenance channel is a polygonal structure, and the inner contour of the annular maintenance channel is a polygonal right-angle support structure; in this embodiment, the base frame 2 is an annular structure with an octagonal outer contour and a quadrangular inner contour, and the annular structure is formed by sequentially and vertically connecting four installation frames 201 with the same specification and right trapezoid outer contour; each vertex of the outer contour of the underframe 2 is connected with one outer ring upright piece 301, and each vertex of the inner contour of the underframe 2 is connected with one inner ring upright piece 302; the ceiling frame 1, the underframe 2, the outer ring column piece 301 and the inner ring column piece 302 together form an annular maintenance channel with an octagonal cross section outer contour and a quadrangular inner contour. The installation mode of modularization is adopted, namely the installation frame 201 formed by four is assembled into the whole underframe 2, so that the efficiency of field installation and disassembly can be improved; moreover, the connection angles between the mounting frames 201 are right angles, specifically, a right-angle support structure is formed between two adjacent mounting frames 201, so that the inner contour of the base frame 2 forms an integral polygonal right-angle support structure, and for an acute angle or an obtuse angle connection angle, the right-angle connection can better ensure the support effect between the mounting frames 201, so that the base frame 2 has better connection stability and is safer and more reliable.

Preferably, there is a difference in length between the hypotenuse frame 2011 and the outer straight frame 2012 of said mounting frame 201 that participate in the outer contour of the chassis 2; in this embodiment, the length of the bevel frame 2011 of the mounting frame 201 is smaller than the length of the straight-edge frame 2012, specifically, when the chassis 2 is inscribed in the inner wall of the hole, the distance B between the bevel frame 2011 and the inner wall of the hole is smaller than the distance a between the straight-edge frame 2012 and the inner wall of the hole. In cleaning the holes, the inner walls of the holes are generally directly sprayed and cleaned and subjected to corrosion prevention treatment, but for some parts with important maintenance, such as water inlets, water outlets or pipelines, more detailed and complicated maintenance and cleaning work is required. Therefore, when hanging, can make hypotenuse frame 2011 is closer to the part of the needs key maintenance in the hole, because interval B is less than interval A, consequently can make maintenance personal be closer to the maintenance region more, more convenient maintain, clear up this key maintenance position. The length difference between the bevel rack 2011 and the outer straight rack 2012 can be set by a person skilled in the art according to the actual space requirement, the location of the major repair part, and the disclosure of the present invention, and will not be described in detail herein. Still further, installation frame 201 adopts square steel material, and its right-angle side one end fretwork, when the hole size that overhauls increases, when needing to increase bottom platform length, directly inserts newly-increased platform on the hole of fretwork, can ensure that platform length accords with the requirement of new hole, and the installation is simple, can ensure in addition that the bottom platform is stable.

Preferably, a top connecting plate 3012 is arranged at the top of the upright member 3, the top connecting plate 3012 is correspondingly connected and assembled with the connecting plate 5 on the main supporting member 101 or the secondary supporting member 102, and the top connecting plate 3012 is also provided with an elongated threaded hole; the bottom connecting plates 3013 are arranged at positions, close to the bottom, of the upright column pieces 3, the bottom connecting plates 3013 are used for supporting and connecting the installation frame 201, and the installation frame 2 formed by connecting the installation frame 201 is connected to the bottom connecting plates 3013 of the upright column pieces 3, so that the overall installation stability of the bottom frame 2 is guaranteed. Still further, each mounting frame 201 is provided with a supporting plate 6 with a shape and a size similar to those of the mounting frame 201, so that the maintenance personnel can conveniently step on the supporting plate for providing a more stable supporting effect. Adjacent outer circle stand 301, and adjacent inner circle stand 302 all link to each other through strengthening the railing, strengthen the railing and can be the horizontal pole structure, also can be the integrated configuration of horizontal pole with the montant to improve the security of maintaining the passageway, can select by oneself to set for to railing structural technical personnel in the field of, and here is not detailed again. At least one is adjacent be connected with cat ladder spare 4 between outer lane stand spare 301, cat ladder spare 4 both can play the safeguard function of railing, also provides the convenient route of business turn over hanging work platform for maintenance personal.

Preferably, the suspension working platform adopts a top suspension structure, if the suspension working platform swings, shakes or the like, the swing amplitude of the bottom of the outer ring upright column 301 is the largest, and the outer ring upright column is most likely to impact the inner wall of the hole, so that at least the bottom of the outer ring upright column 301 is provided with an anti-collision part 3011 outwards, specifically, the anti-collision part 3011 is a spherical universal wheel structure with a smooth surface and arranged at the bottom of the outer ring upright column 301, and the inner wall of the hole is prevented from being scratched; the spherical universal wheel can be made of stainless steel materials, is corrosion-resistant, can also be made of elastic materials such as rubber and the like, and has a good anti-collision effect. When hanging, anticollision portion 3011 all faces to the outside, is towards the inner wall of hole promptly.

In the description herein, references to the description of the terms "embodiment," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A suspended work platform, characterized in that: the method comprises the following steps:

the suspended ceiling frame (1) is used for connecting a hanging device, and the suspended ceiling frame (1) forms an upper frame of the working platform;

the bottom frames (2) are arranged below the ceiling frame (1) at intervals, and the bottom frames (2) form a bottom framework of the working platform;

one end of the upright post piece (3) is connected with the ceiling frame (1), and the other end of the upright post piece is connected with the bottom frame (2); a plurality of upright column pieces (3) are distributed in the working platform at intervals in a surrounding way so as to form a supporting frame of the working platform;

2. A suspended work platform according to claim 1 wherein: the upright post member (3) comprises an outer ring upright post member (301) and an inner ring upright post member (302);

the outer ring upright post pieces (301) are close to the outer edge of the underframe (2), and the inner ring upright post pieces (302) are arranged on the inner side of the outer ring upright post pieces (301) at intervals and close to the middle area of the underframe (2);

the suspended ceiling frame (1), the underframe (2), the outer ring upright post piece (301) and the inner ring upright post piece (302) jointly form an annular maintenance channel.

3. A suspended work platform according to claim 2 wherein: the ceiling frame (1) comprises a main support (101) and a secondary support (102), and the secondary support (102) is connected to an upper surface of the main support (101).

4. A suspended work platform according to claim 3 wherein: the main support piece (101) is provided with a hanging ring part (1011), and the main support piece (101) is connected with the hanging device through the hanging ring part (1011).

5. A suspended work platform according to claim 2 wherein: the outer contour of the annular maintenance channel is of a polygonal structure, and the inner contour of the annular maintenance channel is of a polygonal right-angle supporting structure.

6. A suspended work platform according to claim 5 wherein: the underframe (2) is an annular structure with an octagonal outer contour and a quadrangular inner contour, and the annular structure is formed by sequentially and vertically connecting four installation frames (201) with the same specification and right trapezoid outer contour; each vertex of the outer contour of the underframe (2) is connected with one outer ring upright piece (301), and each vertex of the inner contour of the underframe (2) is connected with one inner ring upright piece (302); the suspended ceiling frame (1), the base frame (2), the outer ring upright post piece (301) and the inner ring upright post piece (302) jointly form an annular maintenance channel with an octagonal cross section outer contour and a quadrilateral inner contour.

7. A suspended work platform according to claim 6 wherein: a length difference exists between the bevel edge frame (2011) and the outer straight edge frame (2012) of the mounting frame (201) which participate in forming the outer contour of the chassis (2).

8. A suspended work platform according to claim 2 wherein: the adjacent outer ring upright post pieces (301) and the adjacent inner ring upright post pieces (302) are connected through reinforcing railings.

9. A suspended work platform according to claim 8 wherein: a ladder climbing piece (4) is connected between at least one adjacent outer ring upright post piece (301).

10. A suspended work platform according to any of claims 1 to 9, wherein: at least the bottom of the outer ring upright post piece (301) faces outwards and is provided with an anti-collision part (3011).