Tower type guide deslagging large-diameter raise boring machine tool

Abstract

The invention relates to a tower-type guide deslagging large-diameter raise boring machine cutter which comprises a central box body, a left cutter clack, a right cutter clack and a scrap cleaning mechanism, the central box body is of a tower-type layered structure which is gradually increased from top to bottom, a connecting rod is arranged in the middle of the central box body, and the connecting rod is perpendicular to an upper panel of the central box body; a plurality of hobbing cutter holders are arranged at the top of an upper panel of each layer of the central box body, a left cutter petal and a right cutter petal are arranged on the periphery of each central box body, the left cutter petals and the right cutter petals are fixedly connected with a side panel on the lowermost layer of the central box body respectively, and the left cutter petals and the right cutter petals are arranged in a central symmetry mode with the connecting rod as the axis; chipping cleaning mechanisms are respectively arranged on the upper panel of the central box body and the upper panels of the left and right cutter flaps, each chipping cleaning mechanism comprises a driving motor and a blade, the blade is connected with an output shaft of the driving motor through a coupler, and a rotating shaft of the blade is parallel to the connecting rod. Rock debris accumulation is effectively inhibited, and automatic debris removal in the construction process is achieved.

Description

Technical Field

[0001] This invention relates to tools for riser drilling rigs used in mine construction, specifically a tower-type guide slag removal large-diameter riser drilling rig tool. Background Technology

[0002] Raise-the-well rigs, as key equipment in vertical and inclined shaft construction, are widely used in underground engineering projects such as mining, water conservancy, and transportation. Their construction process typically employs a top-down or bottom-up drilling method, using a drill rod to drive the drill bit to rotate and break rock, forming the designed shaft. In the construction of long vertical shafts and large-diameter shafts, the performance of the raise-the-well rig's cutting tools directly determines the tunneling efficiency, construction safety, and project cost.

[0003] Currently, traditional raise boring machine (RBM) cutters are mostly arranged in a planar layout or a single-layer dense cutter arrangement. During rock breaking, the large amount of rock cuttings generated by the cutter head tends to accumulate rapidly on the cutter face and the machine housing panel. Due to limited space within the wellbore, obstructed cuttings removal channels, and the effects of drilling fluid or groundwater, the broken rock is highly prone to caking. This caking not only coats the cutter head, leading to poor heat dissipation and accelerated wear, but in severe cases, it can also cause cutter jamming, increased torque, and even equipment shutdown. Frequent shutdowns for cleaning significantly reduce effective tunneling time, increase manual maintenance costs and operational risks, and also affect the wellbore forming quality and construction progress.

[0004] While some existing technologies attempt to assist chip removal by adding airflow or fluid flow channels, or by incorporating simple scrapers into the structure, their chip removal effectiveness is limited in large-diameter, deep well conditions. Furthermore, they often suffer from structural complexity, high energy consumption, and poor adaptability, failing to fundamentally solve the problem of dynamic accumulation and caking of rock fragments in the cutter area. Therefore, developing a large-diameter raise boring machine cutter capable of structurally preventing rock fragment caking and possessing highly efficient self-cleaning capabilities is urgently needed and of great significance for improving the automation level, operational efficiency, and economy of long vertical shaft construction. Summary of the Invention

[0005] This invention discloses a tower-type guided cuttings removal large-diameter raise boring machine cutter, which aims to effectively suppress the accumulation of cuttings through structural design, realize automatic cuttings removal during construction, and ensure continuous and efficient operation of the equipment.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A tower-type guided cutting tool for a large-diameter raise boring machine includes a central housing, a left cutter blade, a right cutter blade, and a debris removal mechanism. The central housing is a tower-type layered structure that increases in size from top to bottom. A connecting rod is provided in the middle of the central housing, perpendicular to the upper panel of the central housing. Multiple roller cutter seats are provided on the top of the upper panel of each layer of the central housing. The left and right cutter blades are respectively provided on the outer periphery of the central housing. The left and right cutter blades are fixedly connected to the side panel of the lowest layer of the central housing. The left and right cutter blades are arranged symmetrically around the connecting rod as the axis. A debris removal mechanism is provided on the upper panel of the central housing and on the upper panels of the left and right cutter blades. The debris removal mechanism includes a drive motor and blades. The blades are connected to the output shaft of the drive motor through a coupling. The rotation shaft of the blades is parallel to the connecting rod.

[0007] Furthermore, the central housing consists of two layers, upper and lower. The upper central housing has six hobbing cutter holders on the top of its upper panel, and the lower central housing has eight hobbing cutter holders on the top of its upper panel. Each layer of hobbing cutter holders is arranged symmetrically around the connecting rod as its axis.

[0008] Furthermore, each layer of the central box includes a bottom plate, a top panel of the central box, and a side panel. The bottom of the side panel is connected to the bottom plate, and the top of the side panel is connected to the top panel of the central box. The interior of the central box is equipped with multiple reinforcing plates.

[0009] Furthermore, the reinforcing plates are radially distributed with the connecting rod as the axis.

[0010] Furthermore, a limiting plate is provided on the side panel of the lowest central box. The limiting plate supports the bottom plates of the left and right blades respectively. The left and right blades are fixed to the side panel of the central box with screws.

[0011] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention, through its tower-style layered structure design, effectively reduces the rock cuttings density in the cutting tool working area by raising the central cutter platform, thus reducing the accumulation of rock fragments in a limited space and inhibiting rock fragment aggregation and consolidation at the structural level. Furthermore, each cutter blade position is equipped with an independent debris cleaning mechanism, which can continuously remove rock cuttings from the working face during tunneling, ensuring the continuous and efficient operation of the cutter and improving construction continuity and safety. The overall structural layout of this invention is reasonable, and the debris removal is highly efficient, significantly reducing the frequency of manual cleaning and equipment downtime. While improving construction efficiency, it effectively reduces labor and maintenance costs, making it particularly suitable for raise shaft drilling operations under complex conditions such as large-diameter, deep vertical shafts. It possesses good engineering adaptability and application value. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the riser drill bit in the embodiment; Figure 2This is a top view of the riser drill bit in the embodiment; Figure 3 This is a front view of the riser drill bit in the embodiment; Figure 4 This is a schematic diagram of the tower-type central box in the embodiment; Figure 5 This is a schematic diagram of the internal structure of the tower-shaped central box in the embodiment; Figure 6 This is a bottom view of the riser drill bit in the embodiment.

[0013] Figure label: 1. Right blade; 2. Longitudinal plate; 3. Blade; 4. Hob cutter holder; 5. Connecting rod; 6. Top panel of the central housing; 7. Horizontal plate; 8. Left blade; 9. Drive motor; 10. Side panel; 11. Limiting plate; 12. Reinforcing plate. Detailed Implementation

[0014] 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.

[0015] This embodiment discloses a tower-type guided slag removal large-diameter riser drilling rig cutter, the structure of which is as follows: Figures 1 to 6 As shown, it mainly includes a central box, a left cutter blade 8, a right cutter blade 1, and a debris cleaning mechanism. In this embodiment, the central box is designed as a tower-like layered structure, that is, each layer increases in size from top to bottom. The purpose is to distribute the roller cutter holders 4 at different heights to reduce the density of cutter arrangement on the same plane in the prior art, thereby effectively avoiding the large accumulation and compaction of rock fragments during construction at the structural level.

[0016] like Figure 4As shown, this embodiment uses a two-layer structure as an example. The central box is divided into upper and lower layers. A connecting rod 5 is provided at the center of the central box, and the connecting rod 5 is perpendicular to the upper panel 6 of the central box. Both the upper and lower central boxes are rectangular box structures. The upper layer is composed of the upper panel 6, the bottom plate, the longitudinal plates 2, and the transverse plates 7. The upper panel 6 is parallel to the bottom plate. Two longitudinal plates 2 are arranged opposite each other and perpendicularly connected to the upper panel 6 and the bottom plate of the central box, respectively. The transverse plates 7 are perpendicularly connected to the longitudinal plates 2, and two transverse plates 7 are arranged opposite each other and also connected to the upper panel 6 and the bottom plate of the central box, respectively. Six hobbing cutter holders 4 are provided on the top surface of the upper panel 6 of the central box in the upper structure. The lower layer is also composed of a central housing top panel 6, a bottom plate, and four side panels 10. The upper bottom plate is fixedly connected to the lower central housing top panel 6. The four side panels 10 are vertically connected between the lower central housing top panel 6 and the bottom plate. Horizontal strip-shaped limiting plates 11 are provided on the lower outer walls of the four side panels 10. Eight hobbing cutter holders 4 are provided on the top surface of the lower central housing top panel 6. The hobbing cutter holders 4 of both the upper and lower layers are arranged symmetrically around the connecting rod 5. To improve the load-bearing capacity of the central housing, in this embodiment, multiple reinforcing plates 12 are also provided inside each layer of the central housing, such as... Figure 5 As shown, the reinforcing plate 12 is radially distributed around the connecting rod 5 as the axis.

[0017] like Figure 1 As shown, a left blade 8 and a right blade 1 are respectively provided around the outer circumference of the central housing. The panels of the left blade 8 and the right blade 1 are provided with fixing grooves for installing the hobbing cutter. Figure 1 Taking two left blades 8 and two right blades 1 as an example, the left blades 8 and right blades 1 are arranged symmetrically around the connecting rod 5. When installing the left and right blades, they are fixed to the side panel 10 of the lower central box with screws, so that the limiting plate 11 on each side supports and positions the blade base plate installed on the same side.

[0018] In this embodiment, a debris cleaning mechanism is also provided on the top of the upper panel 6 of the upper central box and on the top panel of each left and right blade. The debris cleaning mechanism mainly consists of a drive motor 9 and blades 3. The drive motor 9 is fixedly installed at the bottom of the upper panel at the corresponding position, and the blades 3 are located at the top of the upper panel near the edge. The blades 3 are connected to the output shaft of the drive motor 9 through a coupling. The rotating shaft of the blades 3 is perpendicular to the upper panel (i.e. parallel to the connecting rod 5). The drive motor 9 drives the blades 3 to rotate horizontally, pushing the rock debris that falls on the panel to the preset through hole area and discharging it, preventing the rock debris from accumulating in the working area of ​​the cutter and ensuring the continuous and efficient operation of the cutter.

[0019] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tower-type guided slag removal large-diameter raise boring machine cutting tool, characterized in that: The device includes a central housing, a left blade, a right blade, and a debris cleaning mechanism. The central housing is a tower-like, layered structure that gradually increases in size from top to bottom. A connecting rod is located in the middle of the central housing, perpendicular to the top panel of the central housing. Each layer of the central housing's top panel has multiple roller cutter holders. The left and right blades are respectively located on the outer periphery of the central housing and are fixedly connected to the side panel of the lowest layer of the central housing. The left and right blades are arranged symmetrically around the connecting rod as the axis. Debris cleaning mechanisms are located on the top panel of the central housing and on the top panels of the left and right blades. The debris cleaning mechanism includes a drive motor and blades. The blades are connected to the output shaft of the drive motor via a coupling, and the rotation shaft of the blades is parallel to the connecting rod.

2. The tower-type guided slag removal large-diameter raise boring machine tool according to claim 1, characterized in that: The central housing consists of two layers, upper and lower. The upper central housing has six hobbing cutter holders on the top panel, and the lower central housing has eight hobbing cutter holders on the top panel. The hobbing cutter holders in each layer are arranged symmetrically around the connecting rod as the axis.

3. The tower-type guided slag removal large-diameter raise boring machine tool according to claim 1, characterized in that: Each central box includes a bottom plate, a top panel, and side panels. The bottom of the side panels is connected to the bottom plate, and the top of the side panels is connected to the top panel. The interior of the central box is equipped with multiple reinforcing plates.

4. The tower-type guided slag removal large-diameter raise boring machine tool according to claim 3, characterized in that: The reinforcing plates are radially distributed with the connecting rod as the axis.

5. A tower-type guided slag removal large-diameter raise boring machine tool according to claim 3, characterized in that: The side panel of the lowest central housing is equipped with a limiting plate, which supports the bottom plates of the left and right blades respectively. The left and right blades are fixed to the side panel of the central housing with screws.

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