A rock anchor beam concrete protection device

Abstract

The utility model relates to the field of water conservancy and hydropower engineering especially relates to a rock anchor beam concrete protection device, include: anchoring subassembly, by I -beam and pressing plate are composed, the I -beam is fixed through the pressing plate and is embedded in the embedded bolt of concrete, and multiple anchoring subassembly splicing forms I -beam track, walking subassembly includes the I -beam pulley of buckle on the I -beam, protection subassembly, by angle steel, channel steel and steel plate are composed, and the angle steel is connected with channel steel through high -strength bolt and forms the framework, and the steel plate is connected on the framework surface through high -strength bolt. The rock anchor beam concrete protection device has the anti -impact performance and can be reused.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy and hydropower engineering, and in particular to a concrete protection device for rock anchor beams. Background Technology

[0002] Rock anchor beams, as the core load-bearing structure in underground powerhouse systems, are widely used in underground powerhouses of hydropower projects. However, during the blasting excavation of the lower chambers of the powerhouse, the impact and vibration effects of flying rocks from the blasting can cause structural damage such as chipping and cracking on the surface of the already cast concrete rock anchor beams, directly affecting their load-bearing capacity and durability.

[0003] Traditional rock anchor beam protection often employs full-section coverage with wooden formwork or bamboo plywood, secured by welded steel bars. This method has significant drawbacks: it requires a complete wrapping protection, resulting in high material consumption and low turnover rate; the welded formwork is prone to loosening due to vibration during blasting operations, posing a safety hazard of falling objects; the formwork installation and removal processes are time-consuming, severely hindering construction progress; and the rigid welded structure is prone to weld failure and makes it difficult to flexibly adjust the size of the protection system according to different engineering scenarios, resulting in poor adaptability. Using the rock anchor beam's own concrete formwork as a temporary protective layer poses a safety risk of falling objects from heights, and the formwork material lacks sufficient impact resistance to effectively resist the impact of flying rocks from blasting.

[0004] The existing technology has not yet formed a finished protection system for rock anchor beams that is both impact-resistant and reusable. This has led to technical bottlenecks such as insufficient protection effectiveness, low efficiency in process connection, and superimposed risks of high-altitude operations during construction, which seriously restrict the quality control and construction progress of underground powerhouse projects. Utility Model Content

[0005] The problem this utility model aims to solve is to provide a concrete protection device for rock anchor beams that is impact-resistant and reusable, addressing the above-mentioned shortcomings. The technical solution is as follows:

[0006] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is: a concrete protection device for rock anchor beams, comprising:

[0007] An anchoring assembly consists of an I-beam and a pressure plate. The I-beam is fixed by the pressure plate and pre-embedded bolts embedded in the concrete. Multiple anchoring assemblies are assembled to form an I-beam track.

[0008] The traveling assembly includes I-beam pulleys that snap onto the I-beam;

[0009] The protective component consists of angle steel, channel steel, and steel plate. The angle steel and channel steel are connected by high-strength bolts to form a frame, and the steel plate is connected to the surface of the frame by high-strength bolts.

[0010] In one embodiment, the walking assembly further includes rubber casters disposed on the sides and bottom of the channel steel.

[0011] In one embodiment, the I-beam is an I12 I-beam.

[0012] In one embodiment, the thickness of the steel plate is 3 mm.

[0013] In one embodiment, the joints of multiple steel plates are designed to overlap, with a gap of ≤2mm.

[0014] Compared with existing technologies, the advantages of this utility model are as follows: It enables rapid movement to different blasting areas via I-beam rails; a single device can cover most of the rock anchor beam protection needs; it replaces the existing anchor rod fixing method with pre-embedded bolts and pressure plates to form an anchoring assembly, avoiding secondary drilling damage to the rock wall; the protection assembly connects angle steel, channel steel, and steel plates with high-strength bolts, effectively solving the problem of welded structures detaching and deforming under blasting impact; the entire installation process of this device does not require high-altitude formwork dismantling, eliminating the risk of falls and meeting the requirements of green construction. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a cross-sectional view of the concrete protection device for rock anchor beams according to one embodiment.

[0017] Figure 2 This is a schematic diagram of a channel steel structure according to one embodiment.

[0018] Figure 3 This is a cross-sectional view of the anchoring component structure of a concrete protection device for rock anchor beams according to one embodiment.

[0019] Reference numerals: 101: I-beam; 102: Pressure plate; 103: Embedded bolt; 201: I-beam pulley; 202: Rubber caster wheel; 301: Angle steel; 302: Channel steel; 303: Steel plate. Detailed Implementation

[0020] To facilitate understanding of this utility model, the following description will be more comprehensive and detailed in conjunction with the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0021] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of protection of this invention.

[0022] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0023] Please see Figure 1-3 One embodiment of the concrete protection device for rock anchor beams mainly includes: an anchoring assembly, a traveling assembly, and a protection assembly. Specifically, the anchoring assembly consists of an I-beam 101 and a pressure plate 102. The I-beam 101 is fixed by the pressure plate 102 and pre-embedded bolts 103 embedded in the concrete. Multiple anchoring assemblies are assembled to form an adjustable-length I-beam track. I-beam pulleys 201, snapped onto the I-beam 101, constitute the traveling assembly, sliding along the I-beam track and driving the protection assembly to move. Angle steel 301, channel steel 302, and steel plate 303 constitute the protection assembly. The angle steel 301 and channel steel 302 are connected by high-strength bolts to form a frame. The steel plate 303 is connected to the surface of the frame by high-strength bolts to form an impact-resistant protective surface that can resist the impact of flying rocks from blasting. High-strength bolts refer to those with a performance grade of 8.8 or higher.

[0024] Specifically, the walking assembly also includes rubber casters 202 installed on the side and bottom of the channel steel, and auxiliary I-beam pulleys 201 for movement protection. The rubber material of these components can prevent damage to the finished concrete product.

[0025] Preferably, the I-beam is an I12 I-beam.

[0026] Preferably, the thickness of the steel plate 303 is 3mm, and the splicing seam of the steel plate 303 adopts an overlapping design with a gap of ≤2mm to prevent flying stones from splashing in.

[0027] The usage method of the above-mentioned concrete protection device for rock anchor beams is as follows: The concrete rock anchor beam of a certain power station is 145m long, 1.85m wide, and 2.8m high. To construct the concrete protection device for the rock anchor beam of this power station, the anchoring components must first be assembled into the required track. Threaded holes are pre-embedded at 2m intervals on the top of the rock anchor beam. I12 I-beams 101 are placed at the pre-embedded points, and pressure plates 102 with elongated holes are used to lock the I-beams 101. Next, ∠50×5 angle steel 301 and [8 channel steel 302 are connected to form a frame using high-strength bolts. 3mm steel plates 303 are then fully laid on the frame, with an overlap of ≤2mm between adjacent steel plates 303. A continuous protective surface is formed. Then, five sets of I-beam pulleys 201 are installed on the I-beam rail, with one set every 4m. Five sets of rubber casters 202 are added to the side and bottom of the channel steel near the concrete surface. The wheel height is adjusted so that the gap between the wheel surface and the concrete surface is ≤5mm. Before blasting, the rock anchor beam concrete protection device is pushed to the target section. The rubber casters 202 provide lateral stability by closely adhering to the side of the concrete. After blasting, the pressure plate 102 is released and the device is pushed to the next section.

[0028] This rock anchor beam concrete protection device can be quickly moved to different blasting areas via I-beam rails. A single set of devices can cover most rock anchor beam protection needs and can be reused, saving construction costs. The pre-embedded bolts 103, in conjunction with the pressure plate 102, form an existing anchor bolt fixing method for the anchoring component, avoiding secondary drilling damage to the rock wall. The protection component uses high-strength bolts to connect angle steel 301, channel steel 302, and steel plate 303, effectively solving the problem of welded structures detaching and deforming under blasting impact. The walking component adopts a dual-track mode of "I-beam pulley 201 for main load-bearing + rubber universal wheel 202 for auxiliary guidance." The use of rubber universal wheels 202 in contact with the concrete surface effectively avoids damage to the finished concrete, resolving the contradiction between mobile protection and concrete protection. The entire installation process requires no high-altitude formwork removal, eliminating the risk of falls.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A rock anchor beam concrete protection device, characterized by, include: An anchoring assembly consists of an I-beam and a pressure plate. The I-beam is fixed by the pressure plate and pre-embedded bolts embedded in the concrete. Multiple anchoring assemblies are assembled to form an I-beam track. The traveling assembly includes I-beam pulleys that snap onto the I-beam; The protective component consists of angle steel, channel steel, and steel plate. The angle steel and channel steel are connected by high-strength bolts to form a frame, and the steel plate is connected to the surface of the frame by high-strength bolts.

2. The rock anchor beam concrete protection device of claim 1, wherein, The walking assembly also includes rubber casters located on the sides and bottom of the channel steel.

3. The rock anchor beam concrete protection device of claim 1, wherein, The I-beam is an I12 I-beam.

4. The rock anchor beam concrete protection device of claim 1, wherein, The thickness of the steel plate is 3mm.

5. The rock anchor beam concrete protection device of claim 1, wherein, The joints between multiple steel plates are designed with overlap, and the gap is ≤2mm.

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