External construction platform for pressure steel pipe of hydropower station
By designing a skirt structure and reinforcing plates to reinforce the external construction platform of the hydropower station's pressure steel pipe, the stability problem of the large-angle steel pipe construction platform was solved, the construction space was expanded and the safety was improved, and the construction cost was reduced.
Patent Information
- Application Number
- CN202422953849.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-12-02
AI Technical Summary
The external construction platform of the existing hydropower station penstock cannot be stably erected at the exposed pipe section with a large slope and pipe diameter, resulting in reduced safety performance, increased construction difficulty and cost, and affected construction efficiency.
A construction platform including a skirt structure, a platform web and a working platform is designed. The skirt structure is in close contact with the outer wall of the penstock and is reinforced with reinforcing plates and fixing devices to ensure the stability and load-bearing capacity of the platform.
It improves the stability and carrying capacity of the construction platform, expands the construction space, reduces construction risks, improves construction efficiency and saves costs.
Smart Images
Figure CN223469015U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the water and electricity station hydraulic steel structure installation technical field, more specifically, the utility model relates to a water and electricity station pressure steel pipe outside construction platform. BACKGROUND
[0002] At present, the known water and electricity station pressure steel pipe outside construction platform is usually composed of a steel pipe frame, a horse path plate and a protection facility, and this method is applicable to the pressure steel pipe field construction of medium inclination and pipe diameter. However, the bottom of the operation platform at the waist line and above the position of the open pipe section pressure steel pipe outside cannot be directly supported on the ground to set up a support structure, and it is necessary to reinforce the outer wall of the pressure steel pipe, so that the stability and carrying capacity of the overall structure of the operation platform and the safety performance are reduced, the difficulty, preparation time and cost of setting up the platform are increased, and the field construction efficiency of the pressure steel pipe is adversely affected. SUMMARY
[0003] In order to overcome the above-mentioned defects of the prior art, the utility model provides a water and electricity station pressure steel pipe outside construction platform to solve the problems raised in the above background art.
[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a water and electricity station pressure steel pipe outside construction platform, comprising a skirt structure, a platform web plate and an operation platform,
[0005] The skirt structure is welded from two pieces of skirt flange plates, one piece of skirt bottom plate and a plurality of pieces of skirt web plates installed at equal intervals inside;
[0006] The platform web plate is provided with four groups, including two pieces of first web plates on the outside and two pieces of second web plates on the inside, the top of which is connected with the skirt flange plate on the outside, the adjacent platform web plates are connected through the first connecting plate and the second connecting plate, and the bottom is provided with equal interval holes;
[0007] The operation platform is provided with one group, including eight pieces of main beams and two pieces of side beams.
[0008] As a preferred technical scheme of the utility model, the skirt flange plate and the skirt bottom plate are consistent with the design radius of the pressure steel pipe.
[0009] As a preferred technical scheme of the utility model, the four groups of platform web plates are symmetrically arranged along the pressure steel pipe axis direction at equal angles.
[0010] As a preferred technical scheme of the utility model, two groups of first stiff plates are arranged on both sides of the joint between the top of the first web plate and the skirt flange plate on the outside, one piece of lifting lug is arranged on the outer edge of the top and the bottom of the first web plate respectively, and one piece of lifting lug is arranged on the outer edge of the bottom of the second web plate.
[0011] As a preferred technical scheme of the utility model, the first connecting plate is provided with one piece, and the second connecting plate is provided with two pieces.
[0012] As a preferred technical scheme of the utility model, the main beam is made of angle steels with different lengths and is symmetrically installed on both sides of the top of the platform web.
[0013] As a preferred technical scheme of the utility model, the side beam is made of channel steel, is connected with the outer skirt flange plate through one first inclined support, and is connected with the first web through one second inclined support and one third inclined support.
[0014] As a preferred technical scheme of the utility model, the adjacent side beams and the main beam are connected by a plurality of equidistant different length partition plates.
[0015] As a preferred technical scheme of the utility model, the middle two sides of the platform web are reinforced by one first reinforcing plate through the outer wall of the steel pipe.
[0016] As a preferred technical scheme of the utility model, the bottom two sides of the platform web are respectively provided with fixing devices, and the fixing device is composed of one second reinforcing plate, one third reinforcing plate, three second stiff plates and five bolt pairs.
[0017] Compared with the prior art, the utility model has the beneficial effects that:
[0018] 1. The utility model is provided with a skirt structure, a platform web and a working platform, so that the traditional scaffold erection construction can be omitted, the adjacent included angle of the widened platform web and the length of the main beam are increased, the use area of the working platform is increased, the construction space is expanded, the problems of frequent personnel activities and the storage of equipment and tools near the site during the construction process of the pressure steel pipe are effectively solved, a plurality of purposes including installation, measurement, welding, flaw detection and paint repair can be met, in addition, the overall structure of the platform is simple and light in weight, is flexible to assemble and disassemble, is recycled, improves the construction efficiency and saves the construction cost.
[0019] 2. The utility model is provided with a skirt structure, a first reinforcing plate and a fixing device, so that the installation effect of the platform is firm and safe in use, the skirt flange plates on the inner and outer sides of the skirt structure are bent according to the arc of the outer wall of the pressure steel pipe, the skirt bottom plate of the skirt structure is cut according to the arc of the outer wall of the pressure steel pipe, so that the skirt structure is in good contact with the outer surface of the pressure steel pipe.
[0020] 2. The utility model discloses a main beam and side beam are provided with, the main beam is evenly arranged along the pressure steel pipe radius direction, and a plurality of equal interval steel sheets are connected vertically between the main beam and the main beam, the main beam and the side beam, to guarantee that the platform can cover the construction area of different positions on the top of the pressure steel pipe outer wall, to further improve the practicality of the platform, reduce the construction risk. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical scheme in the embodiments of the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments, obviously, the drawings in the following description are only some embodiments described in the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings.
[0022] Fig. 1 It is a kind of water power station pressure steel pipe outside construction platform provides the schematic diagram of main view structure;
[0023] Fig. 2 It is a kind of water power station pressure steel pipe outside construction platform provides the schematic diagram of left view structure;
[0024] Fig. 3 It is a kind of water power station pressure steel pipe outside construction platform provides the schematic diagram of overhead structure.
[0025] Explanation of reference signs:
[0026] 1, skirt flange plate;2, skirt bottom plate;3, skirt web;4, first web;5, second web;6, side beam;7, main beam;8, partition;9, first stiff plate;10, first inclined brace;11, second inclined brace;12, third inclined brace;13, first connecting plate;14, second connecting plate;15, first reinforcing plate;16, second reinforcing plate;17, third reinforcing plate;18, second stiff plate;19, lifting lug. DETAILED DESCRIPTION
[0027] The following specific embodiments illustrate the embodiments of the utility model, and those skilled in the art can easily understand other advantages and effects of the utility model from the contents disclosed in the specification. Obviously, the described embodiments are part of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.
[0028] In order to make those skilled in the art better understand the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.
[0029] Embodiment:
[0030] Refer to the drawingsFigs. 1-3 The water power station pressure steel pipe external construction platform of the embodiment comprises a skirt structure, which is formed by welding two skirt flange plates 1, one skirt bottom plate 2, and a plurality of skirt web plates 3 installed at equal intervals inside.
[0031] The platform web plates are provided with four groups, including two first web plates 4 on the outer side and two second web plates 5 on the inner side. The four groups of platform web plates are arranged at equal angles and symmetrically. The angle of the web plates needs to be adjusted according to the diameter of the pressure steel pipe. The top of the web plates is connected with the outer skirt flange plate 1. The adjacent web plates are connected by one first connecting plate 13 and two second connecting plates 14 to ensure the stability of the internal structure. The bottom of the web plates is provided with equal-interval holes, which facilitates the upstream and downstream installation and adjustment of the bottom fixing device according to the actual situation of the pressure steel pipe.
[0032] Two groups of first stiff plates 9 are arranged on both sides of the joint between the top of the first web plate 4 and the outer skirt flange plate 1. One lifting lug 19 is arranged on the outer edge of the top and bottom of the first web plate 4. One lifting lug 19 is arranged on the outer edge of the bottom of the second web plate 5.
[0033] The working platform is provided with one group, which comprises eight main beams 7 and two edge beams 6. The main beams 7 are made of angle steels with different lengths. The length of the angle steel needs to be determined according to the size of the platform web plate and is symmetrically installed on both sides of the top of the platform web plate. The edge beam 6 is made of a channel steel and is connected with the outer skirt flange plate 1 by a first diagonal brace 10 and with the first web plate 4 by a second diagonal brace 11 and a third diagonal brace 12. The adjacent edge beams 6 and main beams 7 are connected by a plurality of equal-interval different-length partition plates 8. The length of the partition plate 8 needs to be determined according to the included angle of the adjacent platform web plates.
[0034] Finally, to ensure the firm installation and expected bearing effect of the platform, the middle and both sides of the platform web plate are reinforced with a first reinforcing plate 15. The installation position of the first reinforcing plate 15 is positioned according to the position of the stiffening ring of the pressure steel pipe on site. The bottom of the platform web plate is provided with fixing devices on both sides, which are composed of a second reinforcing plate 16, a third reinforcing plate 17, three second stiff plates 18, and five bolt pairs. Each set of fixing device is connected with the platform web plate by bolts and is welded with the outer wall of the pressure steel pipe by the third reinforcing plate 17.
[0035] When in use, the size is determined in advance according to the actual situation on site, and the whole of the assembled and welded construction platform is hoisted to the suitable elevation of the outer wall of the pressure steel pipe through the lifting lug 19, and then the skirt structure is clamped on the top of the stiffening ring upstream of the pressure steel pipe, and is fastened firmly through the code plate or the reinforcing bar to prevent lateral slipping during the platform operation; secondly, the first reinforcing plate 15 is installed at the middle position of the platform web according to the position of the stiffening ring downstream of the pressure steel pipe on site, to ensure that it has sufficient weld leg size with the platform web, the stiffening ring of the pressure steel pipe and the fillet weld of the outer wall of the pressure steel pipe, the fixed device assembled and welded in advance is installed on both sides of the suitable position at the bottom of the platform web, and after being fixed through the bolt and the nut, the welding of the third reinforcing plate 17 and the fillet weld of the outer wall of the pressure steel pipe is completed; finally, after the platform installation quality is checked and confirmed by the quality inspector, the horse path plate is laid on the top of the platform partition 8, the safety guardrail and the kick plate are additionally arranged around the platform, and the formal use condition is met.
[0036] After use, the fixed device, the first reinforcing plate 15 and the skirt structure are cut off from the fillet weld of the outer wall of the pressure steel pipe in the reverse order of the above installation steps, so that the platform can be recycled, and finally the surface welding scar of the outer wall of the pressure steel pipe and the stiffening ring needs to be polished and repainted.
[0037] Specific working principle:
[0038] When the platform is made, the production and assembly sizes of the skirt structure and the platform web are determined according to the actual inclination, diameter, ring seam and spacing of the stiffening ring of the pressure steel pipe. When the platform is used, firstly, the upper surfaces of the stiffening ring of the pressure steel pipe are respectively used for installation and positioning with the skirt on the top of the platform and the first reinforcing plate 15 at the middle position, secondly, the steel plate or the reinforcing bar is used for reinforcing around the skirt structure, and the fixed device assembled in advance is used for reinforcing the bottom of the platform with the outer wall of the pressure steel pipe, and finally the horse path plate is laid on the top of the platform, and the safety guardrail and the kick plate are additionally arranged around the platform. The whole structure of the platform is simple, stable and reliable, easy to assemble and disassemble, has strong bearing capacity and is spacious, can meet the needs of multiple purposes such as installation, welding and corrosion protection of the pressure steel pipe, reduces the construction risk, ensures the construction safety, improves the construction efficiency and saves the construction cost.
[0039] Finally: the above only describes the preferred embodiments of the utility model, and is not used for limiting the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A kind of water power station pressure steel pipe external construction platform, including skirt structure, platform web plate and work platform, it is characterized in that: The skirt structure is welded by two skirt flange plates (1), one skirt bottom plate (2) and several skirt web plates (3) installed at equal intervals inside; The platform web plate is provided with four groups, including two first web plates (4) on the outside and two second web plates (5) on the inside, the top of which is connected with the skirt flange plate (1) on the outside, and the adjacent platform web plates are connected by first connecting plate (13) and second connecting plate (14), and the bottom is provided with equal-interval drilled holes; The work platform is provided with one group, including main beam (7) and edge beam (6), wherein the main beam (7) is provided with eight pieces, and the edge beam (6) is provided with two pieces.
2. A construction platform for the exterior of a penstock of a hydroelectric power station according to claim 1, characterized in that: The skirt flange plate (1) and the skirt bottom plate (2) are consistent with the designed arc of the pressure steel pipe.
3. A construction platform for the exterior of a penstock of a hydroelectric power station according to claim 1, characterized in that: The four groups of platform web plates are symmetrically arranged along the axis direction of the pressure steel pipe at equal angles.
4. The external construction platform for the penstock of a hydropower station according to claim 1, characterized in that: Two groups of first stiff plates (9) are arranged on both sides of the joint between the top of the first web plate (4) and the skirt flange plate (1) on the outside, one lifting lug (19) is arranged on the outer edge of the top and bottom of the first web plate (4), and one lifting lug (19) is arranged on the outer edge of the bottom of the second web plate (5).
5. A construction platform for the exterior of a penstock of a hydroelectric power station according to claim 1, characterized in that: The first connecting plate (13) is provided with one piece, and the second connecting plate (14) is provided with two pieces.
6. A construction platform outside a penstock of a hydroelectric power station according to claim 1, characterized in that: The main beam (7) is made of angle steels of different lengths and is symmetrically installed on both sides of the top of the platform web plate.
7. A construction platform outside a penstock of a hydroelectric power station according to claim 6, characterized in that: The edge beam (6) is made of channel steel and is connected with the skirt flange plate (1) on the outside by a first inclined strut (10) and connected with the first web plate (4) by a second inclined strut (11) and a third inclined strut (12).
8. A construction platform for the exterior of a penstock of a hydroelectric power station according to claim 7, characterized in that: The adjacent edge beam (6) and main beam (7) are connected by several equal-interval different-length partition plates (8).
9. A construction platform for the exterior of a penstock of a hydroelectric power station according to claim 1, characterized in that: The middle two sides of the platform web plate are reinforced by a first reinforcing plate (15) with the outer wall of the steel pipe.
10. The external construction platform for the penstock of a hydropower station according to claim 1, characterized in that: The bottom two sides of the platform web plate are respectively provided with fixing devices, which are composed of a second reinforcing plate (16), a third reinforcing plate (17), three second stiff plates (18) and five bolt pairs, and each set of fixing device is connected with the platform web plate by bolts and welded with the outer wall of the pressure steel pipe by the third reinforcing plate (17).