A method for using a rock slag automatic collecting device for a TBM tunneling test platform

Abstract

The application provides a rock debris automatic collecting device for a TBM tunneling test platform and a use method thereof. The device comprises a base, a residue storage unit is arranged on the base, and a dust suction assembly is connected to a residue inlet of the residue storage unit. The device can reduce the working difficulty of experiment personnel, save time and improve efficiency.

Description

Technical Field

[0001] This invention patent belongs to the field of engineering testing, specifically relating to a method for using an automatic rock debris collection device for a TBM tunneling test platform. Background Technology

[0002] The TBM tunneling test platform is a large-scale experimental device used to study the rock-breaking and tunneling mechanism of the TBM cutterhead system. It has two modes: horizontal tunneling and vertical tunneling. In horizontal tunneling mode, the broken rock debris is continuously discharged via a belt conveyor. In vertical tunneling mode, the rock debris from the test results is in multiple concentric circles, requiring test personnel to manually collect and clean it in separate rings for subsequent rock debris morphology analysis and cutter performance research. Rock debris collection in vertical tunneling mode is time-consuming, labor-intensive, and inefficient. Summary of the Invention

[0003] The present invention provides a method for using an automatic rock debris collection device for a TBM tunneling test platform, which solves the problem of difficult rock debris collection in the vertical excavation mode of the TBM tunneling test platform.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] The present invention provides a method for using an automatic rock debris collection device for a TBM tunneling test platform. The automatic rock debris collection device includes a base, a debris storage unit is provided on the base, and a dust suction component is connected to the debris inlet of the debris storage unit; a thrust bearing is provided between the base and the debris storage unit.

[0006] The slag storage unit includes a box body arranged above the base; each of the four side walls of the box body is provided with a hinge structure, each hinge structure is connected to a rigid telescopic arm, and the free end of each rigid telescopic arm is fixed to the suction pipe of the dust collection assembly; each rigid telescopic arm is provided with a guide wheel on the side near the suction pipe.

[0007] The inner cavity of the box is provided with a slag storage box, the top of the box is provided with an end cap, and the opening end of the end cap is connected to the slag storage box; the bottom of the box is driven to be connected to the output end of the drive unit.

[0008] The dust collection assembly includes a high-pressure blower, the air outlet of which is connected to a pipe on the top of the end cover via a blower pipe; pipes are provided on the four side walls of the end cover, each pipe is connected to a retractable hose, and the inlet of each retractable hose is connected to a suction pipe, the inlet of which is placed at the rock debris of the TBM tunneling test platform.

[0009] The automatic rock slag collection device also includes a drive unit for driving the rotation of the slag storage unit;

[0010] The method of using the automatic rock debris collection device includes the following steps:

[0011] Step 1: After the TBM vertical tunneling test platform conducts one vertical tunneling mode test, first manually collect a small amount of rock debris from the center, then install the automatic rock debris collection device of the TBM tunneling test platform in the center of the test platform, adjust the length of the robotic arm, and then adjust the position of the dust collection component so that the suction port of the dust collection component is facing the outermost ring of rock debris, and start working.

[0012] Step 2: The slag storage unit begins to rotate, driving the dust collection component to rotate. Then, the dust collection component continuously sucks in the annular rock slag and stores it in the slag storage unit.

[0013] Step 3: Under the combined action of the internal baffle and filter, all the rock debris settles to the bottom of the device and is stored in the internal slag storage box. After one working time is completed, open the upper end cover, take out the internal slag storage box and pour out the collected rock debris. Then reinstall the entire device, adjust the working radius of the rigid telescopic arm and the telescopic hose, and repeat the above slag suction work until all rock debris is collected.

[0014] In a preferred embodiment, the drive unit includes an electric motor, and the output shaft of the electric motor is connected to a slag storage unit.

[0015] In a preferred embodiment, a square frame is provided on the inner top of the end cap, and baffles are provided at the four corners of the frame. The installation direction of the baffles is at an angle to the inner top of the end cap.

[0016] In a preferred embodiment, the hinge structure includes a first connector and a second connector, wherein the first connector is fixed to the side wall of the housing; the second connector is fixed to the rigid telescopic arm, and the first connector and the second connector are hinged together. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure;

[0018] Figure 2 A schematic diagram of a 3D model of the end cap;

[0019] Figure 3 This is a bottom view of the end cap;

[0020] Figure 4 A schematic diagram of the 3D model of the box;

[0021] Figure 5 This is the front view of the box.

[0022] Figure 6 This is a 3D assembly diagram;

[0023] Figure 7 This is a magnified schematic diagram of a portion of the hinged joint;

[0024] Figure 8 A schematic diagram of the vertical excavation mode of the TBM tunneling test platform;

[0025] Figure 9 This is a schematic diagram showing the distribution of rock debris in the TBM tunneling test platform.

[0026] Figure 10 For rock slag particle model;

[0027] Figure 11 The numerical simulation results are for the coupled simulation of EDEM and Fluent.

[0028] The components include: 1. Box body; 2. Base; 3. Guide wheel; 4. Suction pipe; 5. Telescopic hose; 6. Slag storage box; 7. End cover; 8. Fan duct; 9. High-pressure fan; 10. Rigid telescopic arm; 11. Hinged structure; 1101. First connecting piece; 1102. Second connecting piece; 12. Electric motor. Detailed Implementation

[0029] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0030] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0031] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0032] As used in this application specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if detected [the described condition or event]" may be interpreted, depending on the context, as meaning "once determined," "in response to determination," "once detected [the described condition or event]," or "in response to detection [the described condition or event]."

[0033] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0035] The present invention provides an automatic rock debris collection device for a TBM tunneling test platform, comprising a housing 1, a base 2, guide wheels 3, a debris storage box 6, an end cap 7, a rigid telescopic arm 10, and a dust collection assembly. The housing 1 is placed on the base 2, and the debris storage box 6 is placed inside the housing 1. The end cap 7 is installed on the top of the housing 1. A rigid telescopic arm 10 is installed on each of the four side walls of the housing 1, and each rigid telescopic arm 10 is equipped with a guide wheel 3.

[0036] An electric motor 12 is installed in the inner cavity of the base 2, and the output shaft of the electric motor 12 drives the housing 1.

[0037] Start the motor 12, which drives the housing 1 to move. The housing 1 rotates with the assistance of the guide wheel 3.

[0038] like Figure 3 As shown, the box 1 is a box structure with one end open, and an outer edge is provided around the opening end, with an annular groove formed on the outer edge.

[0039] The slag storage box 6 is a box structure with one end open.

[0040] like Figure 2 As shown, the end cap 7 is a box structure with one open end, and an outer edge is provided around the opening end, with an annular groove on the outer edge.

[0041] The annular groove on the end cap 7 and the annular groove on the housing 1 are used to install the sealing ring.

[0042] The slag storage box 6 is placed in the cavity formed between the end cover 7 and the box body 1.

[0043] The top of the end cap 7 is provided with an air vent, which is connected to the high-pressure blower 9 through a blower pipe.

[0044] Pipes are provided on the four side walls of the end cap 7. Each pipe is connected to a retractable hose 5. The inlet of each retractable hose 5 is connected to a suction tube 4. The inlet of the suction tube 4 is located at the rock debris of the TBM tunneling test platform.

[0045] The open end of the end cap 7 is connected to the inlet of the slag storage box 6.

[0046] Each of the four side walls of the box 1 is connected to a hinge structure 11, and each hinge structure 11 is connected to a rigid telescopic arm 10. The free end of each rigid telescopic arm 10 is fixed to the side wall of the straw 4.

[0047] like Figure 7 As shown, the hinge structure 11 includes a first connector 1101 and a second connector 1102, wherein the first connector 1101 is fixed to the side wall of the housing 1; the second connector 1102 is fixed to the rigid telescopic arm 10, and the first connector 1101 and the second connector 1102 are hinged together.

[0048] The dust collection assembly includes a high-pressure blower 9, and the air intake of the high-pressure blower 9 is connected to the pipe at the top of the end cover 7 through the blower pipe 8. Example

[0049] refer to Figure 1 and Figure 7 The dust collection component is the most crucial design element of the entire device, responsible for absorbing and storing all rock debris from the TBM vertical excavation test platform. Its overall structure is a double-layered design: the outer layer connects to the equipment base and the dust collection hose, while the inner layer is a storage box for easy removal of the collected rock debris. The structure resembles the outer shell and inner liner of a thermos, with the inner liner easily removable. Both the upper end cap structure and the lower box structure have annular grooves for installing sealing strips and round holes for tight connection using bolts or pins. The lower box 1 has a rigid telescopic arm 10 and guide wheels 3 connected to its side, while the upper part houses the debris storage box 6 and the end cap 7. The end cap 7 has a telescopic hose 5 attached to its side, forming a complete integrated structure.

[0050] Based on the test results of the TBM vertical excavation test platform, the amount of annular rock debris generated will change exponentially with the increase of the cutter head installation radius. The maximum mass of rock debris in the outermost ring is 40 kg. Considering that the collected rock debris needs to be removed manually and that the rock debris in each ring must not be mixed up, the working load of the entire device is set at 20 kg. This way, the rock debris in the slightly larger rock debris ring can be collected in two operations, while the rock debris in the inner ring can be collected in one operation.

[0051] refer to Figure 2 , Figure 3 The upper end cap 7 is a cubic structure with four pipe structures with an inner diameter of 80mm around it, which are used to connect to the retractable hose 5. At the top of the structure is an air outlet that connects to an external high-power high-pressure blower 9. The specific parameters of the high-pressure blower 9 can be determined by experimental methods.

[0052] The end cap 7 has a baffle structure inside to achieve the effect of inertial settling. The baffle is slightly tilted inwards. It is not necessary to set the baffle to a completely vertical angle. The tilt angle can be appropriately reduced so as to minimize the obstruction to airflow without affecting the effect of particle settling.

[0053] A filter screen is arranged on the inside of the baffle to filter out fine particles in the rock debris fragments, preventing the particles from entering the internal structure of the high-pressure blower 9 through the pipeline and causing wear on the blades and other structures.

[0054] The internal slag storage box 6 is a simple cubic shell structure, mainly used to store settled rock slag. The height of the slag storage box 6 is 250mm, the side length of the bottom surface is 350mm, and the volume of the slag storage box 6 is slightly larger than the volume of 20kg of rock slag. There is a hole on each side wall of the slag storage box 6. This design serves two purposes: first, it allows the sucked-in rock slag to smoothly enter the interior of the box for settling; second, it allows the user to easily remove the slag storage box 6.

[0055] refer to Figure 4 , Figure 5 The housing 1 is a box-like structure whose internal dimensions must fit the external dimensions of the slag storage box 6, allowing the slag storage box 6 to be placed inside. An annular groove is cut into the upper surface of the housing 1 for installing sealing strips and other devices to prevent air leakage that could malfunction the entire equipment. Through holes are cut into the sides for bolting the rigid telescopic arm 10. At the bottom of the housing 1, a structure connects to the base 2, allowing the entire upper structure of the housing to be placed on the base 2. The motor 12 transmits power to the housing via a drive shaft, driving the entire dust collection assembly to rotate. A thrust bearing is arranged between the base 2 and the housing 1 structure to reduce friction during operation.

[0056] The internal dimensions of base 2 are 320*320*150 mm, used to install the motor and reducer. Certain designs are incorporated into the upper part of base 2 to mount housing 1 and to accommodate bearings and other structures.

[0057] Furthermore, to enhance the stability of the equipment during rotation, a hinge structure 11 is provided at the connection between the rigid telescopic arm 10 and the housing 1 to reduce vibration caused by uneven movement of the four robotic arms, as shown in the reference. Figure 7 Enlarged view of a section of the hinged structure 11.

[0058] Specific implementation process

[0059] After conducting a vertical excavation test on the TBM vertical excavation test platform, a small amount of rock debris in the center is first manually collected. Then, the equipment is installed in the center of the test platform, the length of the robotic arm is adjusted so that the suction port is directly facing the outermost ring of rock debris, and the machine is started.

[0060] When the machine is working, the motor 12 of the base transmits power to the housing 1 through the transmission shaft, causing the housing structure to rotate. Under the action of the high-power high-pressure blower 9, the annular rock slag is continuously sucked in and placed inside. Under the dual action of the internal baffle and filter screen, all the particles settle to the bottom of the device and are stored in the internal slag storage box 6. After one working time is completed, the upper end cover 7 is opened, the internal slag storage box 6 is taken out and the collected rock slag is poured out. Then the entire device is reinstalled, the working radius of the rigid telescopic arm 10 and the telescopic hose 5 is adjusted, and the above slag suction work is repeated. Finally, all the rock slag collection work can be completed.

[0061] For this embodiment, a coupled numerical simulation of EDEM and Fluent was conducted, and the results are as follows: Figure 11 As shown in the figure, this embodiment demonstrates good absorption of rock slag particles, successfully drawing the particles in. Figure 10 This is a model of rock slag particles.

[0062] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A method for using an automatic rock debris collection device for a TBM tunneling test platform, characterized in that, The automatic rock slag collection device includes a base (2), on which a slag storage unit is provided; a dust suction component is connected to the slag inlet of the slag storage unit; and a thrust bearing is provided between the base (2) and the slag storage unit. The slag storage unit includes a box (1) which is arranged above the base (2); each of the four side walls of the box (1) is provided with a hinge structure (11), each hinge structure (11) is connected to a rigid telescopic arm (10), and the free end of each rigid telescopic arm (10) is fixed to the suction pipe (4) of the dust collection assembly; each rigid telescopic arm (10) is provided with a guide wheel (3) on the side near the suction pipe (4). The inner cavity of the box (1) is provided with a slag storage box (6), the top of the box (1) is provided with an end cap (7), the opening end of the end cap (7) is connected to the slag storage box (6); the bottom of the box (1) is driven to the output end of the drive unit. The dust collection assembly includes a high-pressure blower (9), the air outlet of which is connected to the pipe on the top of the end cover (7) through a blower pipe (8); pipes are provided on the four side walls of the end cover (7), each pipe is connected to a retractable hose (5), and the inlet of each retractable hose (5) is connected to a suction pipe (4), the inlet of which is placed at the rock debris of the TBM tunneling test platform; The automatic rock slag collection device also includes a drive unit for driving the rotation of the slag storage unit; The method of using the automatic rock debris collection device includes the following steps: Step 1: After the TBM vertical tunneling test platform conducts one vertical tunneling mode test, first manually collect a small amount of rock debris from the center, then install the automatic rock debris collection device of the TBM tunneling test platform in the center of the test platform, adjust the length of the robotic arm, and then adjust the position of the dust collection component so that the suction port of the dust collection component is facing the outermost ring of rock debris, and start working. Step 2: The slag storage unit begins to rotate, driving the dust collection component to rotate. Then, the dust collection component continuously sucks in the annular rock slag and stores it in the slag storage unit. Step 3: Under the dual action of the internal baffle and filter screen, all the rock debris settles to the bottom of the device and is stored in the internal slag storage box (6). After one working time is completed, open the upper end cover (7), take out the internal slag storage box (6) and pour out the collected rock debris. Then reinstall the entire device, adjust the working radius of the rigid telescopic arm (10) and the telescopic hose (5), and repeat the above slag suction work until all rock debris collection is completed.

2. The method of using the automatic rock debris collection device for a TBM tunneling test platform according to claim 1, characterized in that, The drive unit includes an electric motor (12), and the output shaft of the electric motor (12) is connected to a slag storage unit.

3. The method of using the automatic rock debris collection device for a TBM tunneling test platform according to claim 1, characterized in that, The inner top of the end cap (7) is provided with a square frame, and baffles are provided at the four corners of the frame. The installation direction of the baffles and the inner top of the end cap (7) are provided with an angle.

4. The method of using the automatic rock debris collection device for a TBM tunneling test platform according to claim 1, characterized in that, The hinge structure (11) includes a first connector (1101) and a second connector (1102), wherein the first connector (1101) is fixed on the side wall of the housing (1); the second connector (1102) is fixed on the rigid telescopic arm (10), and the first connector (1101) and the second connector (1102) are hinged together.

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