Large-section underground shaft grouting lifting device

Abstract

The utility model relates to the technical field of water conservancy and hydropower construction, and provides a large-section underground vertical shaft grouting lifting device which comprises a plurality of double-back steel cantilever frames, a hydraulic center hole jack, a grouting platform and a steel strand. The double-back steel cantilever frame is annularly arranged at the mouth of the vertical shaft and fixed through the anchor rods, and the structure is stable. The hydraulic center hole jack is connected with a hydraulic control system, and the grouting platform is lifted through a steel strand. The grouting platform is composed of modular trapezoidal frame units, is easy to mount and dismount, and is provided with guardrails to improve the safety. The device realizes stable lifting of the grouting platform, ensures uniform stress in the construction process, is suitable for construction of various vertical shaft structures, and has good economical efficiency, environmental protection property and wide application value.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy and hydropower construction technology, and in particular to a grouting and lifting device for large-section underground vertical shafts. Background Technology

[0002] With the development of my country's new power system based on new energy sources, the demand for pumped storage is constantly increasing. By 2035, my country's installed capacity of pumped storage will increase to 300 million kilowatts. Traditional hydropower station shaft construction uses winches to lift grouting platforms, which has problems such as inconsistent lifting stroke, poor stability, and weak load-bearing capacity. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a grouting and lifting device for large-section underground shafts, thereby improving the on-site construction environment and reducing construction difficulty and labor intensity.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A grouting and lifting device for a large-section underground shaft includes: several double-backed steel cantilever frames installed at the shaft opening; hydraulic through-type jacks installed above each double-backed steel cantilever frame; a grouting platform installed below the double-backed steel cantilever frames; and several steel strands connecting the hydraulic through-type jacks and the grouting platform. The hydraulic through-type jacks are connected to a hydraulic control system. The several double-backed steel cantilever frames are arranged in a ring at equal intervals along the center of the shaft opening.

[0006] Preferably, the tail ends of the double-backed steel cantilever frame are all fixedly connected to anchor rods, which are located at the shaft opening. Each tail end of the double-backed steel cantilever frame is fixedly connected to at least four anchor rods after bending.

[0007] Preferably, the double-backed steel cantilever frame is connected to the hydraulic through-hole jack by bolts, and the bottom of the grouting platform is provided with several anchor points that are respectively connected to several steel strands. The steel strands pass from the anchor points of the grouting platform to the top of the through-hole hydraulic jack; the hydraulic control system is placed at the shaft opening.

[0008] Preferably, the double-backed steel cantilever frame is provided in 6 sets, and 6 anchor points are set at the bottom of the grouting platform. A steel strand is passed from each anchor point at the bottom of the grouting platform to the top of the hydraulic through-type jack.

[0009] Preferably, the grouting platform includes several trapezoidal frame units connected end to end and a guardrail located on top of the trapezoidal frame units.

[0010] Preferably, there are 8 trapezoidal frame units, each including: a front trapezoidal frame, a side trapezoidal frame, a rear trapezoidal frame, and a other side trapezoidal frame connected end to end; the side trapezoidal frame is provided with several connecting blocks, each connecting block is provided with several through holes, the bottom of the side trapezoidal frame is provided with an anchoring block, the anchoring block has a hole in its center, and the front trapezoidal frame, the side trapezoidal frame, the rear trapezoidal frame, and the other side trapezoidal frame are all provided with diagonal braces.

[0011] Preferably, the grouting platform is fully covered with wooden planks, and the wooden planks are fixedly connected to the grouting platform.

[0012] This utility model discloses a grouting and lifting device for large-section underground vertical shafts, which has the following beneficial effects.

[0013] This invention achieves stable lifting of the grouting platform through a combination of hydraulic through-type jacks and steel strands, improving construction efficiency. The use of a double-backed steel cantilever frame enhances the structural stability and safety of the device. The modular trapezoidal frame unit design facilitates installation and disassembly, offering strong adaptability and flexibility for shaft construction with different cross-sections, while ensuring uniform stress distribution on the platform during construction. The hydraulic control system is centrally located at the wellhead for convenient operation. The grouting platform is equipped with guardrails and fully covered with wooden planks, ensuring both operational safety and improved construction comfort. The materials are reusable, offering good economic benefits and environmental characteristics, while significantly improving construction efficiency and safety, reducing construction time and costs, resulting in significant social benefits and broad application value. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present invention.

[0015] Figure 2 This is a top view of the structure of this utility model.

[0016] Figure 3 This is a top view of the trapezoidal frame unit of this utility model.

[0017] Figure 4 for Figure 3 Diagram of direction A in the middle.

[0018] Figure 5 for Figure 3 Schematic diagram of direction C.

[0019] Figure 6 for Figure 3 Schematic diagram of direction D.

[0020] Figure 7 for Figure 3 A schematic diagram of the cross-sectional structure at section BB.

[0021] In the attached diagram: 1. Large-section vertical shaft; 2. Double-backed steel cantilever frame; 3. Hydraulic through-hole jack; 4. Grouting platform; 41. Trapezoidal frame unit; 411. Front trapezoidal frame; 412. Side trapezoidal frame; 413. Rear trapezoidal frame; 414. Connecting block; 415. Anchor block; 42. Guardrail; 5. Steel strand; 6. Hydraulic control system; 7. Anchor bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example

[0024] Reference Figures 1 to 2 A grouting and lifting device for a large-section underground vertical shaft includes: several double-backed steel cantilever frames 2 installed at the opening of the large-section vertical shaft 1; hydraulic through-type jacks 3 installed above each double-backed steel cantilever frame 2; a grouting platform 4 installed below the double-backed steel cantilever frames 2; and several steel strands 5 connecting the hydraulic through-type jacks 3 and the grouting platform 4. The hydraulic through-type jacks 3 are connected to a hydraulic control system 6. The several double-backed steel cantilever frames 2 are arranged in a ring at equal intervals along the center of the vertical shaft opening. The double-backed steel cantilever frames 2 and the hydraulic through-type jacks 3 are connected and fixed by high-strength bolts. The hydraulic control system 6 controls the hydraulic through-type jacks 3 to climb the steel strands 5 to drive the grouting platform 4 to lift.

[0025] Reference Figure 1 and Figure 2 As a preferred embodiment, in this embodiment, the tail ends of the double-backed steel cantilever frame 2 are all fixedly connected to the anchor rods 7. The anchor rods 7 are located at the shaft opening. Each tail end of the double-backed steel cantilever frame 2 is fixedly connected to at least four anchor rods 7 after bending. The anchor rods 7 are inserted 3m into the rock and exposed 1m outside.

[0026] Preferably, in this embodiment, the double-backed steel cantilever frame 2 is connected to the hydraulic through-hole jack 3 by bolts, and the bottom of the grouting platform 4 is provided with several anchor points that are respectively connected to several steel strands 5. The steel strands 5 pass from the anchor points of the grouting platform 4 to the top of the through-hole hydraulic jack; the hydraulic control system 6 is placed at the shaft opening.

[0027] Reference Figure 1 and Figure 2 Preferably, in this embodiment, the double-backed steel cantilever frame 2 is provided with 6 sets, and the bottom of the grouting platform 4 is provided with 6 anchor points. One steel strand 5 is passed from each anchor point at the bottom of the grouting platform 4 to the top of the hydraulic through-type jack 3. The grouting platform is lifted by 4 TS40D-300 CNC jacks with external dimensions of 310mm×310mm×1841mm and 2 TS60C-250 lifting jacks with external dimensions of A310mm×1600mm. The climbing steel strand 5 must be fixed to the cantilever beam at the wellhead of the large well. The specifications of the steel strand 5 are 1×7-15.2-1470. Only the drill rod and grouting pipeline are placed on the grouting platform 4. It is necessary to ensure that the grouting platform 4 is horizontal so that the 6 steel cables are evenly stressed.

[0028] Reference Figure 2 Preferably, in this embodiment, the grouting platform 4 includes several trapezoidal frame units 41 connected end to end, and a guardrail 42 disposed on the top of the trapezoidal frame units 41.

[0029] Reference Figures 2 to 7 Preferably, in this embodiment, there are 8 trapezoidal frame units 41. The trapezoidal frame unit 41 includes: a front trapezoidal frame 411, a side trapezoidal frame 412, a rear trapezoidal frame 413, and a other side trapezoidal frame 412 connected end to end. The side trapezoidal frame 412 is provided with four connecting blocks 414, and the connecting blocks 414 are provided with four through holes. The bottom of the side trapezoidal frame 412 is provided with an anchor block 415, and the anchor block 415 has a hole in the center. The front trapezoidal frame 411, the side trapezoidal frame 412, the rear trapezoidal frame 413, and the other side trapezoidal frame 412 are all provided with diagonal braces. The bottom of the trapezoidal frame unit 41 is also provided with diagonal braces. The connecting block 414 is used to connect adjacent trapezoidal frame units 41. The grouting platform 4 can be used to lift the trapezoidal frame unit 41 to the bottom of the large-section vertical shaft 1 for installation through the personnel and material lifting system arranged during the excavation of the large-section vertical shaft 1. It has the advantages of simple installation and dismantling, and convenient operation and maintenance. It has significant economic and social benefits and has a wide range of application value.

[0030] Preferably, in this embodiment, the grouting platform 4 is fully covered with wooden boards, and the wooden boards are fixedly connected to the grouting platform 4.

[0031] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Substitutions may include replacements for some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the scope of protection of this utility model.

Claims

1. A grouting and lifting device for large-section underground vertical shafts, characterized in that, include: A number of double-backed steel cantilever frames (2) are installed at the opening of a large-section vertical shaft (1), a hydraulic through-type jack (3) is installed above each double-backed steel cantilever frame (2), a grouting platform (4) is installed below the double-backed steel cantilever frame (2), and a number of steel strands (5) connect the hydraulic through-type jack (3) and the grouting platform (4); the hydraulic through-type jack (3) is connected to a hydraulic control system (6); the number of double-backed steel cantilever frames (2) are arranged in a ring at equal intervals along the center of the vertical shaft opening.

2. The grouting and lifting device for large-section underground vertical shafts according to claim 1, characterized in that, The tail ends of the double-backed steel cantilever frame (2) are all fixedly connected to the anchor rods (7). The anchor rods (7) are located at the shaft opening. The tail end of each double-backed steel cantilever frame (2) is fixedly connected to at least four anchor rods (7) after bending.

3. The grouting and lifting device for large-section underground vertical shafts according to claim 1, characterized in that, The double-backed steel cantilever frame (2) is connected to the hydraulic through-hole jack (3) by bolts. The bottom of the grouting platform (4) is provided with several anchor points that are connected to several steel strands (5). The steel strands (5) pass from the anchor points of the grouting platform (4) to the top of the through-hole hydraulic jack. The hydraulic control system (6) is placed at the shaft opening.

4. The grouting and lifting device for large-section underground vertical shafts according to claim 1, characterized in that, The double-backed steel cantilever frame (2) is provided with 6 sets, and 6 anchor points are set at the bottom of the grouting platform (4). A steel strand (5) is passed from each anchor point at the bottom of the grouting platform (4) to the top of the hydraulic through-type jack (3).

5. A grouting and lifting device for large-section underground shafts according to claim 1, characterized in that, The grouting platform (4) includes several trapezoidal frame units (41) connected end to end, and a guardrail (42) on the top of the trapezoidal frame unit (41).

6. A grouting and lifting device for large-section underground shafts according to claim 5, characterized in that, There are 8 trapezoidal frame units (41). Each trapezoidal frame unit (41) includes: a front trapezoidal frame (411), a side trapezoidal frame (412), a rear trapezoidal frame (413), and another side trapezoidal frame (412) connected end to end. The side trapezoidal frame (412) is provided with several connecting blocks (414), and the connecting blocks (414) are provided with several through holes. The bottom of the side trapezoidal frame (412) is provided with anchor blocks (415), and the anchor blocks (415) have holes in the center. The front trapezoidal frame (411), the side trapezoidal frame (412), the rear trapezoidal frame (413), and the other side trapezoidal frame (412) are all provided with diagonal braces.

7. A grouting and lifting device for large-section underground shafts according to claim 1 or 5, characterized in that, The grouting platform (4) is fully covered with wooden boards, which are fixedly connected to the grouting platform (4).

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