A slag removal auxiliary device for integration into the drill bit of a vertical shaft boring machine.
By integrating a water-air mixer and water-air pipe into the drill bit of a vertical shaft boring machine, the problem of residual slag inside the cutterhead was solved, achieving cutterhead cleaning and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANHE MECHANICAL EQUIP MFG
- Filing Date
- 2025-08-28
- Publication Date
- 2026-06-09
AI Technical Summary
During the construction process, the residual slag inside the cutterhead of existing shaft boring machines causes cutter wear and temperature rise, which in turn leads to problems such as cutterhead wear deviation, increased rotational torque, and slower propulsion speed.
Design a slag discharge auxiliary device, including a water-air mixer, a water-air pipe and a central rotating module. The water-air pipe washes away the slag as the cutter head rotates, cleaning the slag on the cutter head and preventing damage to the cutter head.
It effectively cleans the debris from the cutter head, extends the cutter head's lifespan, and improves construction safety and efficiency.
Smart Images
Figure CN224338977U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of tunneling-related technology, and in particular to a slag removal auxiliary device for integration into the drill bit of a vertical shaft tunneling machine. Background Technology
[0002] With the increasing number of vertical shaft projects in China, the construction technology of shaft boring machines (TBMs) has been widely applied. In underground excavation, muck removal is a crucial process determining construction efficiency and safety. Currently, the most common muck removal method is as follows: after the rock and debris are broken by the cutterhead, scrapers on the sides of the cutterhead spokes scrape the muck at the bottom of the cutterhead into the muck removal tunnel. Then, a vertical screw conveyor or belt conveyor lifts the muck to the surface, achieving continuous muck removal. However, after one cycle of propulsion, the scrapers may not completely remove all the muck. Residual muck in the cutterhead accelerates cutter wear and increases cutter temperature, leading to cutterhead misalignment, increased cutterhead rotation torque, and slower propulsion speed.
[0003] In view of this, it is necessary to design a slag removal auxiliary device for integration into the drill bit of a shaft boring machine to solve one of the above problems. Utility Model Content
[0004] This application provides a slag removal auxiliary device for integration into the drill bit of a vertical shaft boring machine, which can be used to quickly clean the slag accumulated in the drill bit.
[0005] To achieve the above objectives, the technical solution provided in this application is as follows:
[0006] This application provides a slag removal auxiliary device for integration into the drill bit of a vertical shaft boring machine, wherein the slag removal auxiliary device includes:
[0007] The supply module includes a water-vapor mixer, an air inlet pipe, a water inlet pipe, and a mixing pipe, all connected to the water-vapor mixer.
[0008] The water outlet module includes at least three water vapor pipes for conveying water vapor and at least two nozzles installed at intervals on each of the water vapor pipes;
[0009] The central rotary module includes a distributor for connecting the mixing pipe and a plurality of water vapor pipes, and a rotary joint connected between the mixing pipe and the distributor so that the distributor carrying the water vapor pipes can rotate with the cutter head. The distributor includes an inlet end connected to the mixing pipe and a plurality of outlet ends connected to the water vapor pipes. All the outlet ends are coplanar and form a plane. The axial direction of the inlet end is perpendicular to the plane containing the outlet ends.
[0010] Furthermore, the water vapor pipe includes a rigid pipe connected to the outlet and a flexible pipe connected to the rigid pipe, with the nozzles spaced apart on the flexible pipe.
[0011] Furthermore, the outlet directions of the plurality of rigid tubes are distributed at equal angular intervals along the circumference of the plane where the outlet ends are located.
[0012] Furthermore, the water vapor pipe is provided with four parts.
[0013] Furthermore, the two nozzles on the same flexible tube are arranged at opposite angles, and the angle between the nozzle and the plane where the outlet end is located is 30°-60°.
[0014] Furthermore, the central rotary module also includes a housing for accommodating the dispenser, with the rotary joint located on the outside of the housing.
[0015] Furthermore, it also includes a one-way valve located on the air intake pipe to prevent water from entering the air intake pipe.
[0016] Furthermore, it also includes a flow meter installed on the water inlet pipe, the flow meter having a flow range of 100L / min-1000 L / min.
[0017] Furthermore, it also includes a safety valve located in front of the flow meter, the pressure of which does not exceed 1 MPa.
[0018] Furthermore, both the water inlet pipe and the air inlet pipe are DN25 steel pipes.
[0019] Compared with related technologies, the beneficial effects of this application are as follows: by using the slag removal auxiliary device for integration into the drill bit of a vertical shaft boring machine, through the cooperation of the central rotating device and multiple evenly arranged water vapor pipes, the slag removal auxiliary device is integrated on the cutterhead of the vertical shaft boring machine drill bit. The water vapor pipes can rotate with the cutterhead to wash away the slag on the cutterhead, avoid damage to the cutterhead, and thus improve the life of the cutterhead and the safety performance of construction. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of a slag removal auxiliary device according to one embodiment of the slag removal auxiliary device for integration into the drill bit of a vertical shaft boring machine.
[0021] Figure 2 yes Figure 1 A schematic diagram of the central rotary module.
[0022] Figure 3 yes Figure 1 Schematic diagram of the slag discharge auxiliary device.
[0023] Figure 4 yes Figure 1 A schematic diagram of the slag discharge auxiliary device integrated on the cutterhead.
[0024] Among them, 1-slag discharge auxiliary device, 10-supply module, 11-water-air mixer, 12-water inlet pipe, 13-air inlet pipe, 14-mixing pipe, 20-water outlet module, 21-water-air pipe, 211-rigid pipe, 212-flexible pipe, 22-nozzle, 30-center rotation module, 31-water-air distributor, 311-inlet end, 312-outlet end, 32-rotary joint, 33-outer shell, 34-auxiliary pipe, 40-one-way valve, 50-flow meter, 60-safety valve, 70-water pump, 2-cutter disc, 201-spoke. Detailed Implementation
[0025] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.
[0026] It should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the purpose of simplifying the description of this application and do not indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this application. Specifically, in this application, the direction facing the ground is referred to as "lower," and conversely, the direction away from the ground is referred to as "upper." Other descriptions of orientation are defined based on "upper" and "lower."
[0027] In the various figures of this application, for ease of illustration, certain dimensions of structures or parts may be exaggerated relative to other structural parts; therefore, they are only used to illustrate the basic structure of the subject matter of this application.
[0028] like Figures 1 to 4 As shown, this application provides a slag removal auxiliary device 1 for integration into the drill bit of a vertical shaft boring machine. The slag removal auxiliary device 1 is integrated on the cutterhead 2 of the drill bit and does not affect the normal operation of the drill bit.
[0029] The slag discharge auxiliary device 1 includes a supply module 10 for supplying water vapor, a water discharge module 20 for spraying water vapor onto the cutter head 2, and a central rotation module 30 for cooperating with the cutter head 2.
[0030] like Figure 1 and Figure 3As shown, the supply module 10 includes a water-vapor mixer 11, a water inlet pipe 12, an air inlet pipe 13, and a mixing pipe 14, which are respectively connected to the water-vapor mixer 11. That is, water and compressed air are mixed in the water-vapor mixer 11 to obtain high-pressure water vapor, and the high-pressure water vapor is discharged through the mixing pipe 11.
[0031] In this application, both the air inlet pipe 13 and the water inlet pipe 12 are made of DN25 steel pipes, which are suitable for tunneling construction environments with high strength, and the standard specifications make maintenance and replacement convenient.
[0032] The water outlet module 20 includes at least three water vapor pipes 21 for conveying water vapor and at least two nozzles 22 installed at intervals on each water vapor pipe 21, so that the water vapor sprayed by the water outlet module 20 can cover the cutter head 2 as much as possible, which can improve the cleaning effect of the slag. All the water vapor pipes 21 are arranged on the same plane, which corresponds to the plane on which the cutter head 2 is located.
[0033] Specifically, the water vapor pipe 21 includes a rigid pipe 211 connected to the central rotating module 30 and a flexible pipe 212 connected to the rigid pipe 211. The use of a flexible pipe 212 in part of the water vapor pipe 21 can change the position of the flexible pipe 212 on the cutter head 2 and change the direction of water vapor spraying from the nozzle 22, thereby improving the efficiency of assisted slag removal and also enhancing the applicability of the water vapor pipe 21.
[0034] The outlet directions of the multiple rigid tubes 211 are distributed at equal angular intervals along the circumference of the plane where the water vapor pipe 21 is located. That is, the cooperation of the multiple flexible tubes 212 and the multiple nozzles 22 can evenly cover the cutter head 2. The shape of the rigid tubes 211 is not limited and can be designed according to the actual situation of the cutter head 2. In this application, in order to fix the central rotating module 30 on the cutter head 2 and avoid other structures on the cutter head 2, the rigid tubes 211 are connected to the central rotating module 30 by bending design.
[0035] like Figure 4 As shown, there are four water vapor pipes 21. Since the water vapor pipes 21 need to be fixedly installed on the spokes 201 of the cutter head 2, the arrangement of the water vapor pipes 21 needs to take into account the size of the cutter head 2. That is, according to the arrangement of the four water vapor pipes 21, the spray range of the nozzle 22 should cover the cutter head 2, but should not affect the normal operation of the cutter head 2.
[0036] The nozzles 22 are spaced apart along the length of the flexible tube 212. Two nozzles 22 on the same flexible tube 212 are inclined in opposite directions. The angle between the nozzle 22 and the plane where the water vapor tube 21 is located is 30°-60°. Preferably, the angle between the nozzle 22 and the plane is 45°.
[0037] like Figures 1 to 3 As shown, the central rotary module 30 is mainly used to spray the water vapor in the mixing pipe 14 onto the large-area cutterhead 2. Specifically, the central rotary module 30 includes a distributor 31 for connecting the mixing pipe 14 and several water vapor pipes 21, and a rotary joint 32 connected between the mixing pipe 14 and the distributor 31 so that the distributor 31 can carry the water vapor pipes 21 and rotate with the cutterhead 2. When the cutterhead 2 rotates, the mixing pipe 14 remains stationary, while the water vapor pipes 21 rotate with the cutterhead 2, so as to achieve the purpose of integrating the slag removal auxiliary device 1 onto the cutterhead 2 of the tunneling machine.
[0038] like Figure 2 As shown, the distributor 31 includes an inlet end 311 connected to the mixing pipe 14 and a plurality of outlet ends 312 connected to the water vapor pipe 21. All the outlet ends 312 are coplanar and form a plane, that is, the plane where the outlet ends 312 are located and the plane where the water vapor pipe 21 is located are the same plane. In other words, the outlet directions of the plurality of rigid pipes 211 are distributed at equal angular intervals along the circumference of the plane where the outlet ends 312 are located.
[0039] The axial direction of the inlet end 311 is perpendicular to the plane where the outlet end 312 is located. That is, the axial direction of the inlet end 311 is consistent with the axial direction of the cutter head 2, which can achieve the purpose of the mixing tube 14 not rotating with the cutter head 2.
[0040] In this application, the central rotary module 30 also includes a housing 33 for accommodating the dispenser 31, the rotary joint 32 is located outside the housing 33, and the rigid tube 211 extends into the housing 33 for easy connection with the dispenser 31.
[0041] To facilitate the connection between the rotary joint 32 and the inlet end 311, the distributor 31 also includes an auxiliary pipe 34 for connecting the rotary joint 32 and the inlet end 311.
[0042] As a preferred embodiment of this application, such as Figure 3 As shown, the slag discharge auxiliary device 1 also includes a one-way valve 40 provided on the air inlet pipe 13 to prevent water in the water inlet pipe 12 from entering the air inlet pipe 13, thus ensuring the normal use of the slag discharge auxiliary device 1.
[0043] As a preferred embodiment of this application, the slag discharge auxiliary device 1 further includes a flow meter 50 installed on the water inlet pipe 12. The flow range of the flow meter 50 is 100L / min-1000L / min, which regulates the water flow in the water inlet pipe 12. For example, when constructing in a soil environment where there may be a lot of slag, the water flow of the flow meter 50 can be increased, and when constructing in a soil environment where there may be less slag, the water flow of the flow meter 50 can be decreased. By rationally adjusting the water flow, water consumption can be saved.
[0044] As a preferred embodiment of this application, the slag discharge auxiliary device 1 further includes a safety valve 60 located in front of the flow meter 50. The pressure of the safety valve 60 does not exceed 1 MPa to avoid excessive water pressure and potential safety hazards.
[0045] As a preferred embodiment of this application, the slag discharge auxiliary device 1 further includes a water pump 70, which is located in front of the flow meter 50 and provides pressure to the water in the inlet pipe 12.
[0046] In summary, the slag removal auxiliary device 1 for a vertical shaft tunneling machine of this application integrates the slag removal auxiliary device 1 onto the cutterhead 2 of the vertical shaft tunneling machine drill bit through the cooperation of the central rotating device 30 and multiple evenly arranged water vapor pipes 21. The water vapor pipes 21 can rotate with the cutterhead 2 to wash away the slag on the cutterhead 2, avoid damage to the cutterhead 2, and thus improve the service life of the cutterhead 2 and the safety performance of construction.
[0047] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
[0048] The detailed descriptions listed above are merely specific illustrations of feasible embodiments of this application and are not intended to limit the scope of protection of this application. All equivalent embodiments or modifications made without departing from the spirit of the art of this application should be included within the scope of protection of this application.
Claims
1. A slag removal auxiliary device for integration into the drill bit of a vertical shaft boring machine, characterized in that, include: The supply module includes a water-vapor mixer, an air inlet pipe, a water inlet pipe, and a mixing pipe, all connected to the water-vapor mixer. The water outlet module includes at least three water vapor pipes for conveying water vapor and at least two nozzles installed at intervals on each of the water vapor pipes; The central rotary module includes a distributor for connecting the mixing pipe and a plurality of water vapor pipes, and a rotary joint connected between the mixing pipe and the distributor so that the distributor carrying the water vapor pipes can rotate with the cutter head. The distributor includes an inlet end connected to the mixing pipe and a plurality of outlet ends connected to the water vapor pipes. All the outlet ends are coplanar and form a plane. The axial direction of the inlet end is perpendicular to the plane containing the outlet ends.
2. The slag removal auxiliary device for integration into the drill bit of a vertical shaft boring machine as described in claim 1, characterized in that, The water vapor pipe includes a rigid pipe connected to the outlet and a flexible pipe connected to the rigid pipe, with the nozzles spaced apart on the flexible pipe.
3. The slag removal auxiliary device for integration into the drill bit of a vertical shaft boring machine as described in claim 2, characterized in that, The outlet directions of the multiple rigid tubes are distributed at equal angular intervals along the circumference of the plane where the outlet ends are located.
4. The slag removal auxiliary device for integration into the drill bit of a vertical shaft boring machine as described in claim 3, characterized in that, There are four water vapor pipes.
5. The slag removal auxiliary device for integration into the drill bit of a vertical shaft boring machine as described in claim 2, characterized in that, Two nozzles on the same flexible tube are arranged at opposite angles, and the angle between the nozzle and the plane where the outlet end is located is 30°-60°.
6. The slag removal auxiliary device for integration into the drill bit of a vertical shaft boring machine as described in claim 1, characterized in that, The central rotary module also includes a housing for accommodating the dispenser, with the rotary joint located on the outside of the housing.
7. The slag removal auxiliary device for integration into the drill bit of a vertical shaft boring machine as described in any one of claims 1 to 6, characterized in that, It also includes a one-way valve installed on the air intake pipe to prevent water from entering the air intake pipe.
8. The slag removal auxiliary device for integration into the drill bit of a vertical shaft boring machine as described in any one of claims 1 to 6, characterized in that, It also includes a flow meter installed on the water inlet pipe, the flow meter having a flow range of 100 L / min to 1000 L / min.
9. The slag removal auxiliary device for integration into the drill bit of a vertical shaft boring machine as described in claim 8, characterized in that, It also includes a safety valve located in front of the flow meter, wherein the pressure of the safety valve does not exceed 1 MPa.
10. The slag removal auxiliary device for integration into the drill bit of a vertical shaft boring machine as described in any one of claims 1 to 6, characterized in that, Both the water inlet pipe and the air inlet pipe are DN25 steel pipes.