Anti-falling system of pumped storage power station and installation method

Abstract

The invention relates to the technical field of anti-falling systems, and particularly discloses an anti-falling system of a pumped storage power station and an installation method.The anti-falling system of the pumped storage power station comprises a plurality of embedded steel bar pieces, and the embedded steel bar pieces are anchored to a foundation wall body in a steel bar embedding mode; the supporting beam is fixedly connected with the outer ends of the multiple embedded steel bar pieces. One end of the cable-stayed reinforcing member is connected to the supporting beam, and the other end of the cable-stayed reinforcing member is connected to the foundation wall body, so that the cable-stayed reinforcing member, the foundation wall body and the supporting beam form a triangular supporting structure. The triangular supporting structure can effectively disperse and transmit impact loads, the safety coefficient far exceeds the national standard requirement, the triangular supporting structure is particularly suitable for the complex foundation embedded steel bar and cable-stayed combined structural form which may slightly deform, the requirement for the surface flatness of a foundation wall body is low, and the construction cost is low. The safety pulley is particularly suitable for concrete rock wall environment modular design and step-by-step leveling technology of a pumped storage power station, field installation is fast, high flatness of a lifeline can be achieved, and it is guaranteed that the safety pulley runs on a rigid sliding rail without resistance.

Description

Technical Field

[0001] This invention relates to the field of fall protection systems, specifically to a fall protection system and installation method for a pumped storage power station. Background Technology

[0002] Pumped storage power stations are equipped with main powerhouse cranes, tailgate cranes, GIS tower cranes, and cranes for sheds and enclosed storage areas. During operation and maintenance of the main powerhouse crane trusses, workers need to walk on the crane beam tracks or trusses, posing a risk of falls from height. Fall protection systems are installed on the crane beam tracks or trusses to prevent workers from falling. These systems utilize both flexible and rigid steel wire ropes.

[0003] In the existing technology, flexible steel wire ropes have a large sag, while rigid steel wire ropes have a small sag. However, the fixing brackets (welded or bolted connections) of rigid steel wire ropes have the following defects: 1. The rock wall is uneven and has different shapes, so the rigid steel wire rope cannot effectively adapt to the rock wall environment during installation; 2. The fixing brackets of rigid steel wire ropes are complicated to install, and the levelness is difficult to control precisely. Summary of the Invention

[0004] The purpose of this invention is to provide a fall protection system and installation method for pumped storage power stations to solve the problems in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A fall protection system for a pumped storage power station includes multiple anchoring members, which are anchored to the foundation wall by anchoring. A support beam is fixedly connected to the outer ends of the multiple anchoring members. The system also includes a diagonal bracing member and a load-bearing hanger. One end of the diagonal bracing member is connected to the support beam, and the other end is connected to the foundation wall, forming a triangular support structure with the diagonal bracing member, the foundation wall, and the support beam. The load-bearing hanger is detachably connected to the top of the support beam. The system also includes a rigid slide rail, which is horizontally arranged. Multiple triangular support structures jointly fix the rigid slide rail, and a rigid steel wire rope is fastened to the load-bearing hanger.

[0006] Furthermore, it also includes a positioning tube, which is sleeved outside the anchoring component and fixedly connected to the anchoring component; the anchoring component anchors the support beam to the foundation wall by anchoring the anchoring component, specifically: the anchoring component and the positioning tube together anchor the support beam to the foundation wall.

[0007] Furthermore, the inclined tie rod is a strip steel component, and the inclined tie rod is connected to the foundation wall by expansion bolts; the angle between the inclined tie rod and the horizontal plane is between 30° and 60°.

[0008] Preferably, the angle between the inclined tie rod and the horizontal plane is 45°.

[0009] Furthermore, energy buffers are connected to both ends of the rigid slide rail, and tensioners are installed on the energy buffers for tensioning.

[0010] A method for installing a fall protection system in a pumped-storage power station, the method comprising the following steps: Step S1: Positioning and drilling. Determine multiple mounting points on the foundation wall and drill holes at these mounting points to form multiple mounting holes. Step S2: Rebar installation and fixing, inserting and fixing the rebar into the mounting hole; Step S3: Install the support beam, align the support beam with the outer ends of the multiple rebar anchors and fix them in place; Step S4: Diagonal bracing reinforcement. Connect one end of the diagonal bracing reinforcement component to the support beam and fix the other end to the foundation wall, and put the diagonal bracing reinforcement component in a tensioned state. Step S5: Install the rigid slide rail by installing it onto the support beam using a load-bearing hanger.

[0011] Furthermore, in step S2, after the rebar anchor is inserted and fixed in the mounting hole, a positioning tube is installed, and the positioning tube is sleeved on the outer end of the rebar anchor and fixedly connected.

[0012] Furthermore, in step S3, before installing the support beam, a level measuring instrument is used to adjust its levelness so that the levelness error of the support beam is no more than 5mm.

[0013] Furthermore, in step S5, the levelness is adjusted when installing the rigid slide rail.

[0014] Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. The load-bearing hanger of the present invention is fixed by rebar, replacing the traditional rigid steel wire rope fixing bracket. The triangular support structure of the present invention can effectively disperse and transmit impact loads, and the safety factor far exceeds the national standard requirements. It is particularly suitable for complex foundations that may undergo slight deformation.

[0015] 2. The structural form combining rebar anchoring and inclined tie rods has low requirements for the surface flatness of the foundation wall, making it particularly suitable for the concrete rock wall environment of pumped storage power stations.

[0016] 3. The modular design and step-by-step leveling make on-site installation quick and ensure that the safety trolley runs smoothly on the rigid rails; each component is relatively independent, and if local damage occurs, the damaged structure can be directly replaced without affecting the whole, which greatly reduces maintenance costs and time. Attached Figure Description

[0017] Figure 1This is a connection structure diagram of the present invention.

[0018] Figure 2 for Figure 1 AA cross-section view.

[0019] Figure 3 for Figure 1 BB cross-section.

[0020] Figure 4 This is a diagram showing the connection between the rebar anchor and the positioning tube.

[0021] The labels in the diagram are as follows: 100-foundation wall, 1-rebar anchor, 2-positioning tube, 3-support beam, 4-diagonal bracing, 5-expansion bolt, 6-load-bearing hanger, 7-rigid slide rail, 8-safety trolley, 9-energy buffer, 10-tensioner, 11-guide wheel. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, so as to provide a better understanding of the concept of the present invention, the technical problem solved, the technical features constituting the technical solution, and the technical effects brought about.

[0023] like Figures 1-4 As shown, a fall protection system for a pumped storage power station includes multiple anchoring members 1, which are anchored to the foundation wall 100 by anchoring. A support beam 3 is fixedly connected to the outer ends of the multiple anchoring members 1. The system also includes a diagonal bracing member 4 and a load-bearing hanger 6. One end of the diagonal bracing member 4 is connected to the support beam 3, and the other end is connected to the foundation wall 100, so that the diagonal bracing member 4, the foundation wall 100, and the support beam 3 form a triangular support structure. The load-bearing hanger 6 is detachably connected to the top of the support beam 3. The system also includes a rigid slide rail 7, which is horizontally arranged. Multiple triangular support structures jointly fix the rigid slide rail 7, and a rigid steel wire rope is fastened to the load-bearing hanger 6.

[0024] The inclined tie rod 4, the foundation wall 100, and the support beam 3 of this invention form a triangular support structure, constituting a stable triangular force system. This effectively decomposes the impact force borne by the rigid steel wire rope into compressive and tensile stresses, which are then transferred to the foundation wall 100, greatly improving impact resistance and deformation resistance. By installing inclined tie rods, stability is actively applied, rather than relying entirely on the rigidity of the foundation. The triangular support structure effectively disperses and transfers impact loads, with a safety factor far exceeding national standards, making it particularly suitable for complex foundations where micro-deformation may occur. The combination of rebar and inclined tie rods in this structure has low requirements for the surface flatness of the foundation wall 100, making it especially suitable for the concrete rock wall environment of pumped storage power stations. The modular design and step-by-step leveling process enable quick on-site installation and achieve high straightness of the rigid steel wire rope, ensuring that the safety trolley 8 runs unimpeded on the rigid rail 7. Each component is relatively independent, and in the event of local damage, the damaged structure can be directly replaced without affecting the entire structure, greatly reducing maintenance costs and time.

[0025] Furthermore, it also includes a positioning tube 2, which is sleeved on the outside of the anchoring component 1 and is fixedly connected to the anchoring component 1; the anchoring component 1 anchors the support beam 3 to the foundation wall 100 by anchoring the anchoring component 1, specifically: the anchoring component 1 and the positioning tube 2 together anchor the support beam 3 to the foundation wall 100.

[0026] Furthermore, the inclined bracing member 4 is a strip steel component, and the inclined bracing member 4 is connected to the foundation wall 100 by expansion bolts 5; the angle between the inclined bracing member 4 and the horizontal plane is between 30° and 60°.

[0027] Preferably, the angle between the inclined tie rod 4 and the horizontal plane is 45°.

[0028] Furthermore, energy buffers 9 are connected to both ends of the rigid slide rail 7, and tensioners 10 are installed on the energy buffers 9 for tensioning, and guide wheels 11 are provided for guiding.

[0029] A method for installing a fall protection system in a pumped-storage power station, the method comprising the following steps: Step S1: Positioning and drilling. Determine multiple installation points on the foundation wall 100 and drill holes at these points to form multiple installation holes. The depth of the installation holes should be ≥200mm. Clean the installation holes. Step S2: Rebar installation and fixing. Insert and fix the rebar component 1 into the mounting hole; the depth of rebar installation shall not be less than 200mm to ensure the reliability of the fixing root. The rebar is used to fix φ25mm threaded steel. Step S3: Install the support beam 3, align the support beam 3 with the outer ends of the multiple rebar anchors 1 and fix them in place; Step S4: Diagonal bracing reinforcement. Connect one end of the 60×6mm diagonal bracing member 4 to the support beam 3, and fix the other end to the foundation wall 100. Use M18×150mm expansion bolts 5 to fix it, and put the diagonal bracing member 4 in a tensioned state. Step S5: Install the rigid slide rail 7. Install the rigid slide rail 7 onto the support beam 3 using the C-shaped load-bearing hanger 6. Install the four-wheel safety trolley 8, buffer stop, and other accessories, and test the smoothness of operation.

[0030] Furthermore, in step S2, after the anchoring component 1 is inserted and fixed in the mounting hole, a 150×150mm positioning tube 2 is installed, and the positioning tube 2 is sleeved on the outer end of the anchoring component 1 and fixedly connected by welding.

[0031] Furthermore, in step S3, before installing the support beam 3, its levelness is adjusted using a level measuring instrument to ensure that the levelness error of the support beam 3 is no greater than 5mm. The support square tube serving as the foundation is first installed and leveled independently, and then the rigid slide rail 7 is installed and leveled a second time on it, achieving step-by-step control of installation accuracy.

[0032] Furthermore, in step S5, the levelness is adjusted when installing the rigid slide rail 7.

[0033] The terms "connection" and "fixing" appearing in the description of this invention can refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meaning of the above terms in this invention should be understood according to the specific circumstances.

[0034] In the description of this invention, the terms "center," "upper," "lower," "horizontal," "inner," and "outer," etc., are used only to indicate the orientation or positional relationship for the convenience of describing this invention and to simplify the description, and do not indicate or imply a specific orientation that the device or element referred to must have, and therefore should not be construed as a limitation of this invention.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fall protection system for a pumped storage power station, characterized in that: It includes multiple rebar anchors (1), which are anchored to the foundation wall (100) by rebar anchoring. The support beam (3) is fixedly connected to the outer ends of multiple rebar members (1); It also includes a diagonal bracing member (4) and a load-bearing hanger (6). One end of the diagonal bracing member (4) is connected to the support beam (3), and the other end of the diagonal bracing member (4) is connected to the foundation wall (100), so that the diagonal bracing member (4), the foundation wall (100) and the support beam (3) form a triangular support structure. The load-bearing hanger (6) is detachably connected to the top of the support beam (3). It also includes a rigid slide rail (7), which is set horizontally and is fixed by multiple triangular support structures. The rigid steel wire rope is fastened to the load-bearing hanger (6).

2. The fall protection system for a pumped storage power station according to claim 1, characterized in that: It also includes a positioning tube (2), which is sleeved on the outside of the anchoring component (1) and is fixedly connected to the anchoring component (1); The anchoring component (1) anchors the support beam (3) to the foundation wall (100) by means of anchoring the rebar. Specifically, the anchoring component (1) and the positioning tube (2) together anchor the support beam (3) to the foundation wall (100).

3. The fall protection system for a pumped storage power station according to claim 1, characterized in that: The inclined bracing member (4) is a strip steel component, and the inclined bracing member (4) is connected to the foundation wall (100) by expansion bolts (5); The angle between the inclined tie rod (4) and the horizontal plane is between 30° and 60°.

4. The fall protection system for a pumped storage power station according to claim 3, characterized in that: The angle between the inclined cable reinforcement (4) and the horizontal plane is 45°.

5. The fall protection system for a pumped storage power station according to claim 1, characterized in that: The rigid slide rail (7) is connected to energy buffers (9) at both ends, and tensioners (10) are installed on the energy buffers for tensioning.

6. A method for installing a fall protection system in a pumped storage power station, characterized in that, The method employs the fall protection system of any one of claims 1-5 for pumped storage power stations: Step S1: Positioning and drilling: Determine multiple mounting points on the base wall (100) and drill holes at the multiple mounting points to form multiple mounting holes; Step S2: Rebar fixing, inserting and fixing the rebar component (1) into the mounting hole; Step S3: Install the support beam (3), align the support beam (3) with the outer ends of the multiple rebar members (1) and fix them in place; Step S4: Diagonal bracing reinforcement, connect one end of the diagonal bracing reinforcement component to the support beam (3), fix the other end to the foundation wall (100), and put the diagonal bracing reinforcement component (4) in a tensioned state; Step S5: Install the rigid slide rail (7) and install the rigid slide rail (7) onto the support beam (3) using the load-bearing hanger (6).

7. The installation method of a fall protection system for a pumped storage power station according to claim 6, characterized in that, In step S2, after the anchoring component (1) is implanted and fixed in the mounting hole, the positioning tube (2) is installed, and the positioning tube (2) is sleeved on the outer end of the anchoring component (1) and fixedly connected.

8. The installation method of a fall protection system for a pumped storage power station according to claim 6, characterized in that, In step S3, before installing the support beam (3), the levelness of the support beam (3) is adjusted using a level measuring instrument so that the levelness error of the support beam (3) is no more than 5mm.

9. The installation method of a fall protection system for a pumped storage power station according to claim 6, characterized in that, In step S5, the level is adjusted when installing the rigid slide rail (7).

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