Novel vertical shaft tunneling platform

Abstract

The utility model discloses a novel vertical shaft tunneling platform which is characterized in that a plurality of groups of winches are arranged at the top of a gantry crane, the vertical shaft tunneling platform is hoisted through a plurality of cables, a plurality of hydraulic supporting shoes are arranged on the side face of the vertical shaft tunneling platform, and the bottom of the vertical shaft tunneling platform is movably connected with a spherical hinge through a ball socket joint. The vertical shaft expanding excavation device can be used for vertical shaft expanding excavation in water and electricity pumping storage, can be fixed to well walls with different hole diameters through the hydraulic supporting shoe, and can achieve full-section expanding excavation of a vertical shaft by controlling the tunneling arm through the spherical hinge and the hydraulic rod. Compared with a vertical shaft TBM, the structure design is simplified, the equipment cost is reduced, the angle of the excavation funnel ranges from 55 degrees to 65 degrees, the slag slipping funnel is formed, excavated rock disintegrating slag can automatically fall into the slag slipping pilot shaft from the slag slipping funnel, the slag skimming procedure is omitted, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft excavation construction, in particular to a novel shaft tunneling platform. Background Technique

[0002] In recent years, with the start of construction of pumped storage power stations in China, shaft excavation technology has also developed accordingly. In domestic shaft excavation construction, the raiseborer is a commonly used pilot shaft construction equipment. Raiseborer construction can save a large amount of manpower and improve construction efficiency, but the excavation cost is relatively high. It is generally only used for slush guide shafts with a diameter of less than 3 meters. For shafts with a diameter of more than 6.5 meters, other methods need to be used for excavation and support. During the excavation process, the full-section excavation equipment of the existing technology has a complex structure and high cost, and it is necessary to frequently hoist personnel, equipment and materials, and continuously transport muck out of the well. The construction continuity is poor, and the safety risks of blasting construction and hoisting are extremely high, and the construction efficiency is low. Especially for shafts hundreds of meters high, after excavation to a certain depth, the construction efficiency will drop sharply and the safety risk will rise rapidly. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the above deficiencies and propose a novel shaft tunneling platform, which can carry out shaft excavation and support more safely and efficiently, optimize the muck removal process, and improve construction efficiency.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is: a novel shaft tunneling platform, including a hoisting system for providing stable support for the tunneling platform. The hoisting system includes a gantry crane installed above the wellhead. A slush guide shaft is provided at the center of the bottom of the wellhead. Several sets of winches are installed on the top of the gantry crane. The several sets of winches respectively hoist a lifting platform and a stable hook of the gantry crane. The stable hook hoists the shaft tunneling platform through several cables. Several hydraulic support shoes are installed on the side of the shaft tunneling platform. The bottom of the shaft tunneling platform is movably connected with a spherical hinge through a ball socket joint. The bottom of the spherical hinge is fixedly connected with a tunneling arm. An overhanging tunneling bit is provided at the bottom of the tunneling arm. Several hydraulic rods are also arranged at the bottom of the shaft tunneling platform. The telescopic end of the hydraulic rod is hinged to the side of the tunneling arm.

[0005] Preferably, the shaft tunneling platform includes an anchor shotcreting support platform. The top of the anchor shotcreting support platform is hoisted by several cables with the stable hook of the gantry crane. The bottom of the anchor shotcreting support platform is fixedly connected with a control platform. The bottom of the control platform is movably connected with a spherical hinge through a ball socket joint.

[0006] Preferably, the hoisting system further includes a raiseboring winch arranged on the ground. The raiseboring winch hoists the shaft tunneling platform through a steel cable.

[0007] Preferably, a foldable safety fence is detachably connected to the top of the anchor spraying support platform.

[0008] Preferably, the plurality of hydraulic support shoes are preferably four, which are installed in groups of two on both sides of the control platform.

[0009] Preferably, a searchlight is installed at the bottom of the shaft excavation platform, and a camera is provided on the excavation arm.

[0010] Preferably, a limiting wheel is arranged at the top of the gantry crane near the position above the wellhead, and the hoist is used to hoist the lifting platform after the steel cable is wound around the limiting wheel.

[0011] Beneficial effects of the utility model:

[0012] 1. The utility model can be used for the expansion of vertical shafts in hydropower pumping and storage. It can be fixed on the shaft wall with different apertures through hydraulic support shoes. The tunneling arm can be controlled by ball joints and hydraulic rods to achieve the expansion of the entire cross-section of the vertical shaft. Compared with the vertical shaft TBM, the structural design is simplified and the equipment cost is reduced;

[0013] 2. The utility model forms a slag funnel by setting the excavation funnel angle between 55° and 65°, so that the rock debris after excavation can automatically fall into the slag guide shaft from the slag funnel, eliminating the slag removal process and improving the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the state of the utility model when it is in operation;

[0015] Figure 2 It is a vertical section diagram of the excavation process of the utility model;

[0016] Figure 3 It is a top view of the excavation process of the utility model;

[0017] 100. Gantry crane; 101. Winch; 102. Stabilizing hook; 200. Cable; 201. Shaft wall; 202. Lifting platform; 300. Shaft excavation platform; 301. Anchor spraying support platform; 302. Control platform; 303. Hydraulic support shoe; 304. Ball joint; 305. Hydraulic rod; 306. Cantilever excavation drill bit; 307. Excavation arm; 400. Slag guide shaft. DETAILED DESCRIPTION

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] like Figure 1As shown in the figure, a new type of shaft tunneling platform includes a hoisting system for providing stable support for the tunneling platform. The hoisting system includes a gantry crane 100 installed above the wellhead. A slag chute guide well 400 is provided at the center of the bottom of the wellhead. A number of winches 101 are installed on the top of the gantry crane 100. The number of winches 101 respectively hoist the lifting platform 202 and the stabilizing hook 102 of the gantry crane 100. The stabilizing hook 102 hoists the shaft tunneling platform 300 through a number of cables 200. A number of hydraulic support shoes 303 are installed on the side of the shaft tunneling platform 300. The bottom of the shaft tunneling platform 300 is movably connected to a spherical hinge 304 through a ball socket joint. The bottom of the spherical hinge 304 is fixedly connected to the tunneling arm 307. The bottom of the tunneling arm 307 is provided with a cantilever tunneling bit 306. A number of hydraulic rods 305 are also provided at the bottom of the shaft tunneling platform 300. The telescopic end of the hydraulic rod 305 is hinged to the side of the tunneling arm 307. This embodiment is: as Figure 1 shown, the construction direction of the shaft tunneling platform 300 is from top to bottom, that is, the shaft is gradually excavated from the upper part to the lower part. A hoisting system is set above the wellhead of the excavated shaft to provide a stable and safe installation foundation for the lower tunneling platform. During use, the hoisting system and the shaft tunneling platform 300 are connected by cables 200, and the shaft tunneling platform can be hoisted into the shaft by the hoisting system using the cables 200, and the shaft tunneling platform 300 can be lifted and lowered according to different progress and requirements. The number of winches 101 is at least two groups. One group of winches 101 controls the lifting platform 202 to transport personnel and goods, and one group of winches 101 is responsible for driving the shaft tunneling platform 300 to lift and lower. In order to enable the shaft tunneling platform 300 to be firmly supported on the shaft wall, there are hydraulic support shoes 303 on the side of the shaft tunneling platform 300. This support device is equipped with a support pulley group and an anti-slip gear group. The support pulley is mainly for better contact with the shaft wall to make it better support the platform and fix it on the shaft wall. The hydraulic support shoes 303 can be telescoped to adapt to different diameter rock wall working conditions. At the same time, in order to realize the multi-angle excavation operation of the shaft tunneling platform 300, the tunneling arm 307 is controlled to turn through the spherical hinge 304 and a number of hydraulic rods 305. The hydraulic rods 305 are preferably 4 in number and are installed around the spherical hinge 304 to achieve 360-degree rotation. A slag chute funnel is formed by excavating with the tunneling arm 307. The funnel is connected to the slag chute guide well 300 below. The excavated rock debris falls from the slag chute funnel into the bottom of the slag chute guide well 300, and then a dump truck is used to remove the slag.

[0020] Preferably, the shaft tunneling platform 300 includes an anchor shotcreting platform 301. The top of the anchor shotcreting platform 301 is hoisted by a number of cables 200 to the stabilizing hook 102 of the gantry crane 100. The bottom of the anchor shotcreting platform 301 is fixedly connected to an operation platform 302. The bottom of the operation platform 302 is movably connected to a spherical hinge 304 through a ball socket joint. In this embodiment, after the excavation operation is completed, the shaft tunneling platform 300 can be lifted or lowered according to the construction requirements, enabling construction workers to install anchor bars and steel bars, spray concrete, and carry out rock wall support on the anchor shotcreting platform 301. Anchor points are provided on the anchor shotcreting platform 301 for fixing the cables 200. At the same time, an operating system is provided inside the operation platform 302 for controlling the operation of each device. The angle of the tunneling arm 307 is adjusted by the telescopic movement of the hydraulic rod 305. Since the tunneling arm 307 is installed on the spherical hinge, 360-degree rotation and multi-angle mining and tunneling can be achieved.

[0021] Preferably, the hoisting system further includes a raise boring winch arranged on the ground. The raise boring winch hoists the shaft tunneling platform 300 through a steel cable. In this embodiment, a raise boring winch is added on the ground. In reality, the raise boring winch is used to complete the lifting of large-volume and large-diameter machinery, and the lifting is stable and suitable for the hoisting of the shaft tunneling platform. The winch suspends the shaft tunneling platform to a preset height through the steel cable or cable. Using the winch can further ensure the safety of the lifting of the shaft tunneling platform. In this embodiment, the start and stop of the winch and the steady winch are controlled by an electric circuit to realize the automatic transportation of the construction equipment.

[0022] Preferably, a folding safety fence is detachably connected to the top of the anchor shotcreting platform 301. In this embodiment, in order to prevent the risk of falling objects from the platform to a certain extent and avoid the risk of falling during the operation of the anchor shotcreting operation platform 301 and the operation platform 302, a folding safety fence is installed between the platforms. The folding safety fence can be disassembled by itself and is installed around the mounting holes of the platform. The folding safety fence on this platform is composed of many grid plates, forming a safety protection structure.

[0023] Preferably, the number of the hydraulic jacks 303 is preferably four, and they are installed in two groups on both sides of the operation platform 302. The hydraulic jacks 303 are respectively installed on both sides of the operation platform to further improve the stability of the support.

[0024] Preferably, a searchlight is also installed at the bottom of the shaft tunneling platform 300, and a camera is provided on the tunneling arm 307. During the excavation operation, the searchlight provides light for the tunneling, and the camera transmits the picture to the operation platform 302, and the staff carries out precise construction operations through the camera.

[0025] Preferably, a limit wheel is provided at a position near the top of the gantry crane 100 above the wellhead. The hoist 101 hoists and lowers the lifting platform 202 by winding a steel cable around the limit wheel. Two sets of hoists 101 are respectively installed on both sides of the top of the gantry crane 100. One set of hoists 101 winds a steel cable around the stabilizing hook 102 of the gantry crane, and the other set of hoists 101 hoists the lifting platform 202 by means of a limit wheel provided near the center position at the top of the gantry crane. During use, the hoist 101 raises the lifting platform 202 to the wellhead position. A fixed hook is installed on the hoisted lifting platform 202, and it is connected to the wellhead anchor point. After stabilization, personnel or materials enter the lifting platform 202, and then the hoist 101 relaxes to release the lifting platform 202 to the side of the shaft tunneling platform 300. After stabilization, personnel enter the tunneling platform 300.

[0026] The specific working mode of this application is as follows: First, manually excavate the shaft to the minimum depth at which the shaft tunneling platform 300 can operate. Then, connect the gantry crane 100 of the hoisting system to the shaft tunneling platform 300, and use the gantry crane 100 of the hoisting system to hoist the shaft tunneling platform 300 to the required elevation. The construction personnel control the lifting platform 202 to enter the control platform 302 through the hoist 101, control the operating system inside the operating platform 302, control the working platform to lift to a suitable working position, and control the hydraulic support shoes 303 to work through the operating system, so that the supporting surfaces of the 4 hydraulic support shoes 303 contact the excavated shaft wall and are squeezed, generating frictional resistance equal to the gravity of the shaft tunneling platform, so that the shaft tunneling platform 300 is firmly supported on the shaft wall, and then proceed to the next operation; the construction personnel control the angle of the tunneling arm 307 through the operating system to perform part 1 of the excavation, control the excavation section angle to be between 55° and 65° to form a slag chute funnel, and the excavated rock debris falls into the slag chute guide well from the funnel to complete one cycle of excavation operation; the construction personnel control the shaft tunneling platform to lift to a suitable working position through the operating system, control the hydraulic support shoes 303 to work, so that the shaft tunneling platform is firmly supported on the shaft wall, and control the angle of the tunneling arm through the operating system to form a slag chute funnel, perform part 2 of the excavation, and the excavated rock debris falls into the slag chute guide well from the funnel to complete one cycle of excavation operation; after the excavation operation is completed, according to the construction requirements, the shaft tunneling platform can be lifted and lowered so that the construction personnel can install anchor bars and steel bars on the shotcrete support platform 301, spray concrete, and perform rock wall support; sequentially perform the remaining part of the cycle excavation operations such as part 3 and part 4, and after the shaft tunneling platform is lifted to a suitable height, perform support on the shotcrete support platform 301.

[0027] The above embodiments are only the preferred technical solutions of the present utility model and should not be regarded as limitations to the present utility model. The protection scope of the present utility model shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present utility model.

Claims

1. A new type of shaft tunneling platform, comprising a hoisting system for providing stable support for the tunneling platform, the hoisting system including a gantry crane (100) installed above the wellhead, and a slag chute guide well (400) being opened at the central position of the bottom of the wellhead, characterized in that, On the top of the gantry crane (100), several groups of hoists (101) are installed. The several groups of hoists (101) respectively hoist the lifting platform (202) and the stabilizing hook (102) of the gantry crane (100). The stabilizing hook (102) hoists the shaft tunneling platform (300) through several cables (200). Several hydraulic support shoes (303) are installed on the side of the shaft tunneling platform (300). The bottom of the shaft tunneling platform (300) is movably connected with a spherical hinge (304) through a ball socket joint. The bottom of the spherical hinge (304) is fixedly connected with the tunneling arm (307). The bottom of the tunneling arm (307) is provided with a cantilever tunneling bit (306). Several hydraulic rods (305) are also arranged at the bottom of the shaft tunneling platform (300). The telescopic end of the hydraulic rod (305) is hinged to the side of the tunneling arm (307).

2. The novel shaft tunneling platform according to claim 1, wherein: The shaft tunneling platform (300) includes an anchor shotcreting support platform (301). The top of the anchor shotcreting support platform (301) is hoisted by the stabilizing hook (102) of the gantry crane (100) through several cables (200). The bottom of the anchor shotcreting support platform (301) is fixedly connected with an operation platform (302). The bottom of the operation platform (302) is movably connected with a spherical hinge (304) through a ball socket joint.

3. A new type of shaft tunneling platform according to claim 1, characterized in that: The hoisting system further includes a raise boring winch arranged on the ground. The raise boring winch hoists the shaft tunneling platform (300) through a steel cable.

4. A novel shaft tunneling platform according to claim 2, characterized in that: A folding safety fence is detachably connected to the top of the anchor shotcreting support platform (301).

5. A novel shaft tunneling platform according to claim 1, characterized in that: Preferably, there are four of the several hydraulic support shoes (303), and they are installed in two groups on both sides of the operation platform (302).

6. A novel shaft tunneling platform according to claim 1, characterized in that: A searchlight is also installed at the bottom of the shaft tunneling platform (300), and a camera is arranged on the tunneling arm (307).

7. A novel shaft tunneling platform according to claim 1, characterized in that: Limit wheels are arranged at the top of the gantry crane (100) near the upper position of the wellhead. The hoist (101) hoists the lifting platform (202) after the steel cable is wound around the limit wheels.

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