Function expansion module and heading machine

Abstract

The present application relates to the technical field of heading machine, and specifically proposes a function expansion module and a heading machine, wherein the function expansion module comprises: a valve block, which is used for being communicated with a main machine oil circuit of the heading machine and a function expansion oil circuit of the heading machine; a first reversing valve, which is arranged on the valve block, and valve ports of the first reversing valve are respectively used for being communicated with a pilot oil supply oil circuit of the heading machine and a control oil circuit of the heading machine; in the case that the first reversing valve is in a first state, oil liquid in the pilot oil supply oil circuit can flow to the control oil circuit through the valve ports of the first reversing valve, in the case that the first reversing valve is in a second state, the valve block is internally conducted, and oil liquid in the main machine oil circuit can flow to the function expansion oil circuit through the valve block; a pressure sensor, which is used for detecting oil liquid pressure in the valve block, and can send the oil liquid pressure to a controller of the heading machine, so that the controller controls a cutting motor of the heading machine to work.

Description

Technical Field

[0001] This invention relates to the field of tunneling machine technology, and more specifically, to a functional expansion module and a tunneling machine. Background Technology

[0002] In related technologies, when using a tunneling machine, users need to extend the hydraulic system of the main machine to functions such as hydraulic drive, hydraulic support, advanced drilling, and anchor drilling, depending on the site conditions. When these extended functions are executed, they need to be interlocked with the main machine to prevent accidents caused by malfunctions of the main machine. In the process of realizing this invention, the inventors discovered at least the following technical problems in the prior art: achieving the above-mentioned interlocking requires an interlocking system, but existing interlocking systems mostly use several valve groups to cooperate with each other, which is relatively complex when performing interlocking control, and the entire interlocking system occupies a large installation space. Summary of the Invention

[0003] To address the technical problems of existing interlocking systems being complex to control and occupying a large installation space, the first objective of this invention is to propose a functional expansion module.

[0004] A second objective of this invention is to provide a tunneling machine.

[0005] In view of this, according to the first objective of the present invention, the present invention proposes a functional expansion module comprising: a valve block for connecting to the main hydraulic circuit and the functional expansion hydraulic circuit of the tunneling machine; a first directional valve disposed on the valve block, the valve port of the first directional valve being respectively connected to the pilot oil supply circuit and the control circuit of the tunneling machine; when the first directional valve is in a first state, the oil in the pilot oil supply circuit can flow to the control circuit through the valve port of the first directional valve; when the first directional valve is in a second state, the valve block is internally conductive, and the oil in the main hydraulic circuit can flow to the functional expansion hydraulic circuit through the valve block; a pressure sensor for detecting the oil pressure inside the valve block and transmitting the oil pressure to the controller of the tunneling machine so that the controller controls the cutting motor of the tunneling machine to operate.

[0006] The functional expansion module provided by this invention includes a valve block and a first directional valve. The valve block is used to connect with the main hydraulic circuit and the functional expansion hydraulic circuit of the tunneling machine. The hydraulic fluid in the main hydraulic circuit is used to supply the tunneling machine for its main operation. The functional expansion hydraulic circuit is connected to auxiliary components of the tunneling machine, such as rock-blocking supports or drilling components. By supplying oil to the auxiliary components, the tunneling machine can be expanded to include other hydraulic functions such as hydraulic support, advanced drilling, and rock bolt drilling rig drive.

[0007] The first directional valve in the functional expansion module is mounted on the valve block. It primarily functions as a switching switch for the entire module. Its valve ports are connected to both the pilot oil supply circuit and the control oil circuit of the tunneling machine. The first directional valve has two operating states: a first state and a second state. Switching between these states can be achieved manually by the operator toggling the valve itself, or it can be controlled electrically.

[0008] With the first directional valve in its first state, the tunneling machine (TBM) does not require extended functionality and only needs to perform normal main engine operations. In this case, it is essential to ensure that hydraulic fluid is supplied to the components of the TBM performing these operations. The hydraulic fluid in the pilot oil supply circuit flows through the valve port of the first directional valve to the control oil circuit. The low-pressure hydraulic fluid in the pilot oil supply circuit normally enters the TBM's control oil circuit, ensuring the TBM's normal operation. With the first directional valve in its first state, the entire extended functionality module is closed. Hydraulic fluid from the TBM's main engine oil circuit cannot enter the valve block, and the hydraulic fluid from the main engine oil circuit is supplied to the components of the TBM performing the tunneling operation.

[0009] With the first directional valve in its second state, the valve block is internally open, allowing oil in the main unit's oil circuit to flow through the valve block to the functional expansion oil circuit, enabling the use of some expanded functions. The first directional valve allows for one-button control of the oil supply to the expansion function oil circuit, improving operational convenience.

[0010] The functional expansion module also includes a pressure sensor. This sensor detects the oil pressure inside the valve block and sends it to the tunneling machine's controller, enabling the controller to operate the cutting motor. When the pressure sensor detects oil pressure, it indicates that oil from the main hydraulic circuit has entered the valve block, signaling the tunneling machine's intention to use extended functions. The pressure sensor sends a signal to the tunneling machine's controller, which then stops the cutting motor. This interlock between the cutting motor's operation and the implementation of the extended functions prevents malfunctions by the tunneling machine.

[0011] In summary, the functional expansion module proposed in this invention, through the cooperation of the first directional valve and the valve block, enables switching between main machine operation and expansion operation with a single control switch, making operation convenient. Furthermore, by setting up a pressure sensor, when oil in the main machine's oil circuit enters the valve block, a signal is sent to the tunneling machine's controller. The controller can then control the cutting motor accordingly, forcibly stopping and preventing its start, achieving interlocking between the expansion function and the cutting motor's operation. This ensures that the expansion function's operation does not occur simultaneously with the main machine's operation. Controlled by the first directional valve and the pressure sensor, the interlocking control process is convenient, and the entire interlocking control structure is simple. The first directional valve and the pressure sensor are integrated into the valve block, requiring minimal installation space.

[0012] In addition, the functional expansion module in the above embodiments provided by the present invention may also have the following additional technical features:

[0013] In the above technical solution, preferably, the first directional valve is disposed inside the valve block, and the function expansion module further includes: a second directional valve disposed inside the valve block, the valve port of the second directional valve being used to connect to the main engine oil circuit, the function expansion oil circuit and the first directional valve respectively; when the first directional valve is in the first state, the second directional valve is closed; when the first directional valve is in the second state, the oil in the first directional valve can flow to the second directional valve, so that the second directional valve opens, allowing the oil in the main engine oil circuit to flow to the expansion function oil circuit through the second directional valve.

[0014] In this technical solution, the first directional valve is located inside the valve block, and the valve block can provide certain protection for the first directional valve. The functional expansion module also includes a second directional valve. Specifically, the second directional valve is a component used to enable the connection or disconnection of the main engine oil circuit and the functional expansion oil circuit within the valve block.

[0015] The second directional valve, like the first directional valve, is located inside the valve block, facilitating communication between the second and first directional valves. This also creates a structure where different valve bodies are integrated into the valve block, reducing the installation space required for the functional expansion module.

[0016] The second directional valve's ports are connected to the main engine oil circuit, the functional expansion oil circuit, and the first directional valve, respectively. When the first directional valve is in its first state, the second directional valve is in the closed state, and the ports connected to the main engine oil circuit and the functional expansion oil circuit are disconnected. This prevents oil in the main engine oil circuit from entering the functional expansion oil circuit through the second directional valve, ensuring the normal operation of the tunneling machine's main engine.

[0017] When the first directional valve is in the second state, the oil in the first directional valve can flow to the second directional valve, so that the second directional valve opens. The valve port connected to the main oil circuit and the valve port connected to the functional expansion oil circuit are in a connected state, so that the oil in the main oil circuit can flow to the expansion functional oil circuit through the second directional valve. Through the cooperation of the second directional valve and the first directional valve, the expansion functional module can control the on / off of the high-pressure oil and the expansion functional oil circuit.

[0018] In any of the above technical solutions, preferably, the second directional valve includes a control valve port, and the first directional valve includes a first valve port, a second valve port, and a third valve port; the first valve port is used to connect to the pilot oil supply circuit, the second valve port is used to connect to the control oil circuit, and the third valve port is connected to the control valve port; when the first directional valve is in the first state, the first valve port is connected to the second valve port; when the first directional valve is in the second state, the first valve port is connected to the third valve port, and the third valve port is connected to the control valve port.

[0019] In this technical solution, the second directional valve includes a control valve port, and the first directional valve includes three valve ports. Specifically, the three valve ports include a first valve port, a second valve port, and a third valve port. The first valve port is used to connect with the pilot oil supply circuit, the second valve port is used to connect with the control circuit, and the third valve port is used to connect with the control valve port. The first directional valve plays the role of switching the connection between the pilot oil supply circuit, the control circuit, and the second directional valve.

[0020] When the first directional valve is in its first state, the first valve port and the second valve port are connected, allowing oil in the pilot oil supply circuit to enter the first directional valve through the first valve port, and then flow into the control oil circuit through the second valve port, enabling the tunneling machine to control the main engine's movements normally. Furthermore, when the first directional valve is in its first state, the second directional valve is in a closed mode, and oil in the main engine oil circuit cannot enter the functional expansion oil circuit through the second directional valve.

[0021] When the first directional valve is in its second state, the first valve port is connected to the third valve port, and the third valve port is connected to the control valve port. Oil in the pilot oil supply circuit can enter the first directional valve through the first valve port, and then flow to the control valve port through the third valve port. When oil flows into the control valve port, the second directional valve switches to the conduction mode, allowing oil in the main hydraulic circuit to enter the functional expansion circuit through the second directional valve. This enables the tunneling machine to perform expanded functions such as hydraulic drive, hydraulic support, advanced drilling, and bolt drilling rig drive. The function switching process is convenient.

[0022] In any of the above technical solutions, preferably, the pressure sensor includes: a detection probe disposed at the third valve port for detecting the oil pressure at the third valve port and generating an electrical signal based on the oil pressure; and a transmission unit connected to the detection probe, which is capable of receiving the electrical signal and transmitting the electrical signal to the controller.

[0023] In this technical solution, the pressure sensor includes a detection probe and a transmission unit. The detection probe is the detection component of the pressure sensor and can be positioned at the third valve port. When oil flows through the third valve port, the oil impacts the inner wall of the third valve port, and this impact force is the oil pressure. The detection probe can be correspondingly positioned on the inner wall surface and will also be impacted by the oil. When subjected to oil pressure, it generates an electric charge, producing an electrical signal. The transmission unit is connected to the detection probe and can receive the electrical signal generated by the detection probe and transmit the electrical signal to the controller, so that the controller can grasp the state of the third valve port of the first directional valve and determine whether oil is flowing from the first directional valve to the second directional valve.

[0024] In any of the above technical solutions, preferably, the valve block is provided with a control oil port, an oil inlet, a first oil outlet, and a second oil outlet. The control oil port is used to connect with the pilot oil supply circuit, the oil inlet is used to connect with the main engine oil circuit, the first oil outlet is used to connect with the control oil circuit, and the second oil outlet is used to connect with the functional expansion oil circuit. The valve port of the first directional valve is connected to the control oil port and the first oil outlet respectively, and the valve port of the second directional valve is connected to the oil inlet and the second oil outlet respectively.

[0025] In this technical solution, the functional expansion module proposed by the present invention is an integrated design, that is, the first reversing valve and the second reversing valve are set inside the valve block, and the connection between different valve bodies and different oil circuits is indirectly realized through multiple oil ports opened on the valve port.

[0026] Specifically, the valve block has a control port, an inlet port, a first outlet port, and a second outlet port. The control port connects to the pilot oil supply circuit, the inlet port connects to the main engine oil circuit, the first outlet port connects to the control circuit, and the second outlet port connects to the functional expansion circuit. The first directional valve, located inside the valve block, connects to both the control port and the first outlet port. The second directional valve, also located inside the valve block, connects to both the inlet port and the second outlet port. The functional expansion module itself constitutes a complete hydraulic system, exhibiting a high degree of integration. This highly integrated functional expansion module enables the expansion of the tunneling machine's hydraulic system. Modular installation allows for quick and convenient integration into the tunneling machine, while minimizing the installation space required after integration.

[0027] In any of the above technical solutions, preferably, the functional expansion module further includes: a regulating valve, which is disposed inside the valve block, and the valve port of the regulating valve is connected to the valve port of the second reversing valve and the second oil outlet respectively, for controlling the flow rate of oil from the valve port of the second reversing valve to the second oil outlet.

[0028] In this technical solution, the functional expansion module also includes a regulating valve. In terms of its location, the regulating valve is located inside the valve block. In terms of its connection structure, the valve port of the regulating valve is connected to the valve port of the second directional valve and the second oil outlet, respectively. The regulating valve is used to control the flow rate of the oil flowing from the valve port of the second directional valve to the second oil outlet, so that the flow rate of the oil entering the functional expansion oil circuit is controllable. When the tunneling machine performs expansion functions such as hydraulic drive function, hydraulic support function, advanced drilling function, and anchor drilling rig drive function, the oil flow rate can be adjusted to ensure the safety of the expansion function operation.

[0029] In any of the above technical solutions, preferably, the valve block is further provided with a first return oil port, which is used to connect with the return oil circuit of the tunneling machine. The functional expansion module also includes: a pressure regulating pipe, which is set inside the valve block, with one end of the pressure regulating pipe connected to the second reversing valve and the other end of the pressure regulating pipe connected to the first return oil port; and an overflow valve, which is set on the pressure regulating pipe and is used to control the opening and closing of the pressure regulating pipe.

[0030] In this technical solution, a first oil return port is also provided on the valve block. The first oil return port is used to connect with the return oil circuit of the tunneling machine. Through the first oil return port, the oil flowing from the valve block to the first oil return port can flow to the return oil circuit of the tunneling machine to realize the recovery of oil.

[0031] The functional expansion module also includes a pressure regulating pipeline, which is located inside the valve block. One end of the pressure regulating pipeline is connected to the second directional valve, and the other end is connected to the first return port. Specifically, those skilled in the art will understand that the connection between different valve bodies and different ports is achieved through pipelines. The connection between one end of the pressure regulating pipeline and the second directional valve is achieved by connecting the pipeline that connects the one end of the pressure regulating pipeline to the valve port and the second oil outlet of the second directional valve.

[0032] The functional expansion module also includes an overflow valve, which is installed on the pressure regulating pipeline to control the opening and closing of the pressure regulating pipeline. When the pressure in the pipeline connected to the valve port of the second directional valve and the second oil outlet is too high, the overflow valve opens accordingly, allowing the oil in it to flow through the pressure regulating pipeline to the first return oil port, adjusting the pressure between the valve port of the second directional valve and the second oil outlet, and adjusting the pressure at the second oil outlet to ensure the safety of the tunneling machine when performing expansion functions.

[0033] When the pressure in the pipeline connecting the valve port of the second reversing valve and the second oil outlet is within the normal range, the overflow valve closes accordingly to ensure that the oil does not leak.

[0034] In any of the above technical solutions, preferably, the functional expansion module further includes: a throttle valve, which is disposed on the pressure regulating pipeline and located between the second reversing valve and the overflow valve, for controlling the flow rate of oil in the pressure regulating pipeline.

[0035] In this technical solution, the functional expansion module also includes a throttle valve, which is installed on the pressure regulating pipeline. The throttle valve is located between the second reversing valve and the overflow valve and is used to control the flow rate of the oil in the pressure regulating pipeline. That is, by setting the overflow valve and the throttle valve together, the pressure relief process of the pressure regulating pipeline can be realized, so that the pressure relief process can be adjusted more precisely.

[0036] In any of the above technical solutions, preferably, the functional expansion module further includes: a shuttle valve, disposed on the valve block, the shuttle valve including a fourth valve port, a fifth valve port and a sixth valve port, the fourth valve port being connected to the pressure regulating pipeline, the fifth valve port being connected to the pump supply oil circuit of the tunneling machine, and the sixth valve port being connected to the control port of the pump supply oil circuit.

[0037] In this technical solution, the functional expansion module also includes a shuttle valve, which is mounted on the valve block. The shuttle valve includes a fourth valve port, a fifth valve port, and a sixth valve port. The fourth valve port is connected to the pressure relief pipeline, the fifth valve port is connected to the pump supply oil circuit of the tunneling machine, and the sixth valve port is connected to the control port of the pump supply oil circuit. Pressure feedback can be performed through the shuttle valve. Through the fourth and fifth ports, the shuttle valve obtains the pressure inside the pressure regulating pipeline and the pressure inside the pump supply oil circuit, and feeds back the higher pressure to the control port of the pump supply oil circuit through the sixth valve port, thus completing the pressure feedback. This allows the functional expansion module to be seamlessly integrated into the hydraulic system of the tunneling machine.

[0038] According to a second objective of the present invention, a tunneling machine is also provided, comprising: a main body; a functional expansion module as described in any of the above technical solutions, wherein the functional expansion module is disposed in the main body; a main engine oil circuit connected to the main body and the functional expansion module for driving the main body to work; a pilot oil supply oil circuit connected to the main body and the functional expansion module; a control oil circuit connected to the main body and the functional expansion module; and a functional expansion oil circuit connected to the main body and the functional expansion module.

[0039] The tunneling machine provided by the second objective of the present invention includes a main body and the functional expansion module in any of the above-mentioned technical solutions, and therefore has all the beneficial effects of the functional expansion module in any of the above-mentioned technical solutions.

[0040] Specifically, the function expansion module is located within the main body, thus securing it in place. The tunneling machine also includes a main hydraulic circuit, a pilot oil supply circuit, a control hydraulic circuit, and a function expansion hydraulic circuit. The main hydraulic circuit connects to the main body and the function expansion module, driving the main body's operation and supplying oil to the function expansion hydraulic circuit via the expansion module. The pilot oil supply circuit connects to the main body and the function expansion module, supplying low-pressure oil to the control hydraulic circuit and the function expansion module. The control hydraulic circuit, connected to the main body and the function expansion module, uses oil to control the main body's actions.

[0041] Additional aspects and advantages of the invention will become apparent in the following description or may be learned by practice of the invention. Attached Figure Description

[0042] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0043] Figure 1 A schematic diagram of the structure of a functional expansion module in one embodiment of the present invention is shown;

[0044] Figure 2 A schematic diagram of the functional expansion module in use is shown in one embodiment of the present invention.

[0045] in, Figure 1 and Figure 2 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0046] 100 Function Expansion Module, 110 Valve Block, 112 Oil Inlet, 114 Control Oil Port, 116 First Oil Outlet, 118 Second Oil Outlet, 120 First Sub-Port, 122 Second Sub-Port, 124 First Return Port, 126 Second Return Port, 128 Third Return Port, 130 First Directional Control Valve, 132 First Valve Port, 134 Second Valve Port, 136 Third Valve Port, 140 Pressure Sensor, 150 Second Directional Control Valve. 160 Regulating valve, 162 First speed regulating valve, 164 Second speed regulating valve, 170 Pressure regulating pipeline, 172 Relief valve, 174 Throttle valve, 180 Shuttle valve, 182 Fourth valve port, 184 Fifth valve port, 186 Sixth valve port, 190 First interface, 192 Second interface, 200 Main engine oil circuit, 220 Pilot oil supply circuit, 230 Control oil circuit, 240 Return oil circuit, 250 Pump supply oil circuit, 260 Control port. Detailed Implementation

[0047] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0048] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0049] like Figure 1 As shown, in one embodiment of the present invention, a functional expansion module 100 is proposed, including: a valve block 110, a first reversing valve 130, and a pressure sensor 140.

[0050] Specifically, such as Figure 2 As shown, valve block 110 is used to connect to the main hydraulic circuit 200 and the functional expansion hydraulic circuit of the tunneling machine. A first directional valve 130 is disposed on valve block 110, and its valve port is used to connect to the pilot oil supply circuit 220 and the control hydraulic circuit 230 of the tunneling machine, respectively. When the first directional valve 130 is in its first state, the oil in the pilot oil supply circuit 220 can flow to the control hydraulic circuit 230 through the valve port of the first directional valve 130. When the first directional valve 130 is in its second state, valve block 110 is open, and the oil in the main hydraulic circuit 200 can flow to the functional expansion hydraulic circuit through valve block 110. Pressure sensor 140 is used to detect the oil pressure inside valve block 110 and can send the oil pressure to the controller of the tunneling machine, so that the controller controls the cutting motor of the tunneling machine to operate.

[0051] In this embodiment, the function expansion module 100 includes a valve block 110 and a first directional valve 130. The valve block 110 is used to connect with the main hydraulic circuit 200 of the tunneling machine and the function expansion hydraulic circuit of the tunneling machine. The oil in the main hydraulic circuit 200 of the tunneling machine is used to supply the tunneling machine for main machine operation. The oil in the function expansion hydraulic circuit of the tunneling machine is used to supply the auxiliary components of the tunneling machine, such as the rock-blocking support or drilling components. By supplying oil to the auxiliary components, the tunneling machine can expand to other hydraulic functions such as hydraulic support, advanced drilling, and anchor drilling rig drive.

[0052] Specifically, the valve block 110 may have multiple oil ports, and there are pipes inside that connect the different oil ports. One of the oil ports can be connected to the main oil circuit 200 of the tunneling machine, and the other oil port can be connected to the functional expansion oil circuit of the tunneling machine.

[0053] The first directional valve 130 in the functional expansion module 100 is mounted on the valve block 110. The first directional valve 130 primarily functions as a switching switch for the entire functional expansion module 100. The valve ports of the first directional valve 130 are respectively connected to the pilot oil supply circuit 220 and the control oil circuit 230 of the tunneling machine. The first directional valve 130 has two operating states, specifically a first state and a second state. Switching between the first state and the second state can be achieved either by manually controlling the first directional valve 130 by an operator or by electronic control.

[0054] When the first directional valve 130 is in its first state, it can be understood that the tunneling machine does not need to utilize its extended functions and only needs to perform normal main machine operations. At this time, it is necessary to ensure that the hydraulic fluid is supplied to the structural parts of the tunneling machine that perform the main machine operations. The hydraulic fluid in the pilot oil supply circuit 220 can flow through the valve port of the first directional valve 130 to the control oil circuit 230. The hydraulic fluid in the pilot oil supply circuit 220, i.e., the low-pressure oil, normally enters the control oil circuit 230 of the tunneling machine, ensuring the normal operation of the tunneling machine. When the first directional valve 130 is in its first state, it can be understood that the entire functional expansion module 100 is in a closed state. The hydraulic fluid in the main machine oil circuit 200 cannot enter the valve block 110, and the hydraulic fluid in the main machine oil circuit 200 will be supplied to the components of the tunneling machine that perform tunneling operations.

[0055] When the first directional valve 130 is in the second state, the valve block 110 is open, allowing oil in the main unit oil circuit 200 to flow through the valve block 110 to the functional expansion oil circuit, enabling the use of some expanded functions. The first directional valve 130 enables one-button control of the oil supply to the expanded function oil circuit, improving operational convenience.

[0056] The functional expansion module 100 also includes a pressure sensor 140, which detects the oil pressure inside the valve block 110 and sends the oil pressure to the tunneling machine's controller, enabling the controller to operate the tunneling machine's cutting motor. When the pressure sensor 140 detects oil pressure, it indicates that oil from the main hydraulic circuit 200 has entered the valve block 110, indicating that the tunneling machine needs to use some expanded functions. The pressure sensor 140 sends a signal to the tunneling machine's controller, which then stops the cutting motor, thus interlocking the operation of the cutting motor with the implementation of the expanded functions and preventing malfunctions by the tunneling machine.

[0057] Specifically, the oil pressure can be understood as the pressure generated when oil enters the valve block 110 and impacts the pipe section where it exists.

[0058] Specifically, on the one hand, the first directional valve 130 includes a manual directional valve, which can be controlled to switch between the first state and the second state by moving the control handle on the manual directional valve.

[0059] On the other hand, the first directional valve 130 also includes an electrically controlled directional valve, which can be connected to a control circuit. The operator controls the control circuit to change the position of the valve core in the electrically controlled directional valve, thereby controlling the electrically controlled directional valve to switch between the first state and the second state.

[0060] like Figure 1 and Figure 2 As shown, in one embodiment of the present invention, the first reversing valve 130 is disposed inside the valve block 110, and the function expansion module 100 further includes: a second reversing valve 150 disposed inside the valve block 110, the valve port of the second reversing valve 150 being used to connect to the main engine oil circuit 200, the function expansion oil circuit and the first reversing valve 130 respectively; when the first reversing valve 130 is in the first state, the second reversing valve 150 is closed; when the first reversing valve 130 is in the second state, the oil in the first reversing valve 130 can flow to the second reversing valve 150, so that the second reversing valve 150 is opened, so that the oil in the main engine oil circuit 200 can flow to the expansion function oil circuit through the second reversing valve 150.

[0061] In this embodiment, the first directional valve 130 is disposed inside the valve block 110, and the valve block 110 can provide certain protection for the first directional valve 130. The function expansion module 100 also includes a second directional valve 150. Specifically, the second directional valve 150 is a component used to enable the valve block 110 to connect or block the main engine oil circuit 200 and the function expansion oil circuit.

[0062] The second directional valve 150, like the first directional valve 130, is located inside the valve block 110, which facilitates the connection between the second directional valve 150 and the first directional valve 130. It also forms a structure in which different valve bodies are integrated into the interior of the valve block 110, reducing the installation space of the functional expansion module 100.

[0063] The valve ports of the second directional valve 150 are respectively used to connect to the main oil circuit 200, the functional expansion oil circuit, and the first directional valve 130. When the first directional valve 130 is in the first state, the second directional valve 150 is in the closed state, and the valve port connected to the main oil circuit 200 and the valve port connected to the functional expansion oil circuit are disconnected, so that the oil in the main oil circuit 200 cannot enter the functional expansion oil circuit through the second directional valve 150, ensuring the normal operation of the tunneling machine's main unit.

[0064] When the first directional valve 130 is in the second state, the oil in the first directional valve 130 can flow to the second directional valve 150, so that the second directional valve 150 is opened. The valve port connected to the main oil circuit 200 and the valve port connected to the functional expansion oil circuit are in a connected state, so that the oil in the main oil circuit 200 can flow to the expansion functional oil circuit through the second directional valve 150. Through the cooperation of the second directional valve 150 and the first directional valve 130, the expansion functional module can control the on / off of the high-pressure oil and the expansion functional oil circuit.

[0065] Specifically, the second directional valve 150 includes a hydraulically controlled directional valve.

[0066] like Figure 1 and Figure 2 As shown, in one embodiment of the present invention, the second directional valve 150 includes a control valve port, and the first directional valve 130 includes a first valve port 132, a second valve port 134, and a third valve port 136.

[0067] Specifically, the first valve port 132 is connected to the pilot oil supply circuit 220, the second valve port 134 is connected to the control oil circuit 230, and the third valve port 136 is connected to the control valve port; when the first directional valve 130 is in the first state, the first valve port 132 is connected to the second valve port 134; when the first directional valve 130 is in the second state, the first valve port 132 is connected to the third valve port 136, and the third valve port 136 is connected to the control valve port.

[0068] In this embodiment, the second directional valve 150 includes a control valve port, and the first directional valve 130 includes three valve ports. Specifically, the three valve ports include a first valve port 132, a second valve port 134, and a third valve port 136. The first valve port 132 is used to connect to the pilot oil supply circuit 220, the second valve port 134 is used to connect to the control circuit 230, and the third valve port 136 is used to connect to the control valve port. The first directional valve 130 plays the role of switching the connection between the pilot oil supply circuit 220, the control circuit 230, and the second directional valve 150.

[0069] When the first directional valve 130 is in the first state, the first valve port 132 and the second valve port 134 are connected, allowing oil in the pilot oil supply circuit 220 to enter the first directional valve 130 through the first valve port 132, and then flow into the control circuit 230 through the second valve port 134, enabling the tunneling machine to control the main engine operation normally. Furthermore, when the first directional valve 130 is in the first state, the second directional valve 150 is in the closed mode, and oil in the main engine circuit 200 cannot enter the functional expansion circuit through the second directional valve 150.

[0070] When the first directional valve 130 is in the second state, the first valve port 132 is connected to the third valve port 136, and the third valve port 136 is connected to the control valve port. Oil in the pilot oil supply circuit 220 can enter the first directional valve 130 through the first valve port 132, and then flow to the control valve port through the third valve port 136. When oil flows into the control valve port, the second directional valve 150 switches to the conduction mode, and oil in the main oil circuit 200 can enter the functional expansion oil circuit through the second directional valve 150, enabling the tunneling machine to perform expanded functions such as hydraulic drive, hydraulic support, advanced drilling, and anchor drilling rig drive. The tunneling machine has multiple functions, and the function switching process is convenient.

[0071] like Figure 1 As shown, in one embodiment of the present invention, the pressure sensor 140 includes a detection probe and a transmission unit.

[0072] Specifically, the detection probe is set at the third valve port 136 to detect the oil pressure at the third valve port 136 and generate an electrical signal based on the oil pressure. The transmission unit is connected to the detection probe and can receive the electrical signal and transmit the electrical signal to the controller.

[0073] In this embodiment, the pressure sensor includes a detection probe and a transmission unit. The detection probe is the detection component of the pressure sensor and can be disposed on the third valve port 136, specifically on the inner wall of the third valve port 136. When oil flows through the third valve port 136, the oil impacts the inner wall surface of the third valve port 136, and this impact force is the oil pressure. The detection probe is also impacted by the oil, and when subjected to oil pressure, it generates an electric charge, producing an electrical signal. The transmission unit is connected to the detection probe and can receive the electrical signal generated by the detection probe and transmit the electrical signal to the controller, so that the controller can know the state of the third valve port 136 of the first directional valve 130 and whether there is oil flowing from the first directional valve 130 to the second directional valve 150.

[0074] By sending an electrical signal to the controller, the controller can be informed that oil has entered the function expansion module 100, and the controller will then control the cutting motor to stop, thus achieving action interlocking.

[0075] Furthermore, the connection between the third valve port 136 of the first directional valve 130 and the control valve port of the second directional valve 150 is achieved through a pipe between the two valve ports. The pipe is connected to the third valve port 136, and therefore the oil pressure is equal to that of the third valve port 136. Thus, the detection probe can also be placed in the pipe connecting the third valve port 136 of the first directional valve 130 and the control valve port of the second directional valve 150.

[0076] Specifically, the detection probe includes a diaphragm, which is located at the third valve port 136. The diaphragm deforms under pressure to generate an electrical signal.

[0077] like Figure 1 and Figure 2 As shown, in one embodiment of the present invention, the valve block 110 has a control oil port 114, an oil inlet 112, a first oil outlet 116, and a second oil outlet 118. The control oil port 114 is used to connect to the pilot oil supply circuit 220, the oil inlet 112 is used to connect to the main engine oil circuit 200, the first oil outlet 116 is used to connect to the control oil circuit 230, and the second oil outlet 118 is used to connect to the functional expansion oil circuit. The valve port of the first reversing valve 130 is connected to the control oil port 114 and the first oil outlet 116 respectively, and the valve port of the second reversing valve 150 is connected to the oil inlet 112 and the second oil outlet 118 respectively.

[0078] In this embodiment, the functional expansion module 100 proposed by the present invention is an integrated design, that is, the first reversing valve 130 and the second reversing valve 150 are set inside the valve block 110, and the connection between different valve bodies and different oil circuits is indirectly realized through multiple oil ports opened on the valve port.

[0079] Specifically, the valve block 110 has a control port 114, an inlet port 112, a first outlet port 116, and a second outlet port 118. The control port 114 is connected to the pilot oil supply circuit 220, the inlet port 112 is connected to the main engine oil circuit 200, the first outlet port 116 is connected to the control oil circuit 230, and the second outlet port 118 is connected to the function expansion circuit. The valve port of the first directional valve 130, located inside the valve block 110, is connected to both the control port 114 and the first outlet port 116. Similarly, the valve port of the second directional valve 150, also located inside the valve block 110, is connected to both the inlet port 112 and the second outlet port 118. The function expansion module 100 itself constitutes a complete hydraulic system, exhibiting a high degree of integration. Through this highly integrated function expansion module 100, the functions of the tunneling machine's hydraulic system can be expanded. Modular installation allows for quick and convenient integration into the tunneling machine, while minimizing the installation space required after integration.

[0080] Specifically, the second directional valve 150 also includes a seventh valve port and an eighth valve port. The seventh valve port is connected to the oil inlet 112, and the eighth valve port is connected to the second oil outlet 118. When no oil flows into the control valve port of the second directional valve 150, the seventh valve port and the eighth valve port are disconnected. When oil flows into the control valve port of the second directional valve 150, the seventh valve port and the second valve port 134 are connected, so that the oil in the oil inlet 112 can sequentially pass through the seventh valve port, the interior of the second directional valve 150, and the eighth valve port to enter the second oil outlet 118.

[0081] Furthermore, a third return port 128 is provided on the valve port, which is connected to the control valve port of the second directional valve 150 to discharge the oil of the second directional valve 150 so that the second directional valve 150 is reset and switched from the conducting mode to the closed mode.

[0082] like Figure 1 and Figure 2 As shown, in one embodiment of the present invention, the functional expansion module 100 further includes: a regulating valve 160 disposed inside the valve block 110, wherein the valve port of the regulating valve 160 is connected to the valve port of the second reversing valve 150 and the second oil outlet 118 respectively, for controlling the flow rate of oil flowing from the valve port of the second reversing valve 150 to the second oil outlet 118.

[0083] In this embodiment, the function expansion module 100 also includes a regulating valve 160. In terms of its setting position, the regulating valve 160 is disposed inside the valve block 110. In terms of its connection structure, the valve port of the regulating valve 160 is connected to the valve port of the second reversing valve 150 and the second oil outlet 118 respectively. The regulating valve 160 is used to control the flow rate of the oil flowing from the valve port of the second reversing valve 150 to the second oil outlet 118, so that the flow rate of the oil entering the function expansion oil circuit is controllable. When the tunneling machine performs expansion functions such as hydraulic drive function, hydraulic support function, advanced drilling function, and anchor drilling rig drive function, the oil flow rate can be adjusted to ensure safety when performing expansion functions.

[0084] Specifically, the second oil outlet 118 includes a first sub-port 120 and a second sub-port 122, and the regulating valve 160 includes a first speed regulating valve 162, which includes a ninth valve port and a tenth valve port. The ninth valve port is connected to the valve port of the second reversing valve 150, and the tenth valve port is connected to the first sub-port 120.

[0085] The regulating valve 160 also includes a second speed regulating valve 164, which includes an eleventh valve port and a twelfth valve port. The eleventh valve port is connected to the valve port of the second directional valve 150, and the twelfth valve port is connected to the second sub-port 122.

[0086] By setting two speed control valves and two second oil outlets 118, one function expansion module 100 can supply oil to two different function expansion oil circuits, which makes it convenient for the tunneling machine to perform multiple expansion functions at the same time.

[0087] like Figure 1 and Figure 2As shown, in one embodiment of the present invention, the valve block 110 is further provided with a first oil return port 124, which is used to connect with the oil return circuit 240 of the tunneling machine. The functional expansion module 100 also includes: a pressure regulating pipe 170, which is disposed inside the valve block 110, one end of the pressure regulating pipe 170 is connected to the second reversing valve 150, and the other end of the pressure regulating pipe 170 is connected to the first oil return port 124; and an overflow valve 172, which is disposed on the pressure regulating pipe 170 and is used to control the opening and closing of the pressure regulating pipe 170.

[0088] In this embodiment, the valve block 110 is also provided with a first oil return port 124, which is used to connect with the oil return path 240 of the tunneling machine. Through the first oil return port 124, the oil flowing into the valve block 110 to the first oil return port 124 can flow to the oil return path 240 of the tunneling machine to realize the recovery of oil.

[0089] The functional expansion module 100 also includes a pressure regulating pipe 170, which is located inside the valve block 110. One end of the pressure regulating pipe 170 is connected to the second directional valve 150, and the other end is connected to the first return port 124. Specifically, those skilled in the art will understand that the connection between different valve bodies and different ports is achieved through pipes. The connection between one end of the pressure regulating pipe 170 and the second directional valve 150 is achieved by connecting the pipe at one end of the pressure regulating pipe 170 to the valve port of the second directional valve 150 and the second oil outlet 118.

[0090] The functional expansion module 100 also includes an overflow valve 172, which is installed on the pressure regulating pipeline 170 to control the opening and closing of the pressure regulating pipeline 170. When the pressure in the pipeline connected to the valve port of the second reversing valve 150 and the second oil outlet 118 is too high, the overflow valve 172 opens accordingly, allowing the oil in it to flow through the pressure regulating pipeline 170 to the first return oil port 124, adjusting the pressure between the valve port of the second reversing valve 150 and the second oil outlet 118, and adjusting the pressure at the second oil outlet 118 to ensure the safety of the tunneling machine when performing the expansion function.

[0091] When the pressure in the pipeline connecting the valve port of the second reversing valve 150 and the second oil outlet 118 is within the normal range, the overflow valve 172 closes accordingly to ensure that the oil does not leak.

[0092] Furthermore, the functional expansion module 100 also includes a second oil return port 126, which is located in the valve block 110 and is used to connect with the expansion function oil circuit. The second oil return port 126 is connected with the first oil return port 124. The oil flowing in the expansion function can eventually return through the second oil return port 126, and enter the return oil circuit 240 of the tunneling machine through the connection between the second oil return port 126 and the first oil return port 124. Specifically, there are two second oil return ports 126, which can return oil for multiple expansion function oil circuits.

[0093] like Figure 1 and Figure 2 As shown, in one embodiment of the present invention, the functional expansion module 100 further includes: a throttle valve 174, which is disposed on the pressure regulating pipeline 170 and located between the second reversing valve 150 and the overflow valve 172, for controlling the flow rate of oil in the pressure regulating pipeline 170.

[0094] In this embodiment, the functional expansion module 100 also includes a throttle valve 174, which is disposed on the pressure regulating pipeline 170. The throttle valve 174 is located between the second reversing valve 150 and the overflow valve 172, and is used to control the flow rate of the oil in the pressure regulating pipeline 170. That is, by setting the overflow valve 172 and the throttle valve 174, the pressure relief process of the pressure regulating pipeline 170 is realized, so that the pressure relief process can be adjusted more precisely.

[0095] like Figure 1 and Figure 2 As shown, in one embodiment of the present invention, the functional expansion module 100 further includes: a shuttle valve 180 disposed on the valve block 110. The shuttle valve 180 includes a fourth valve port 182, a fifth valve port 184 and a sixth valve port 186. The fourth valve port 182 is connected to the pressure regulating pipeline 170, the fifth valve port 184 is connected to the pump supply oil circuit 250 of the tunneling machine, and the sixth valve port 186 is connected to the control port 260 of the pump supply oil circuit 250.

[0096] In this embodiment, the functional expansion module 100 also includes a shuttle valve 180, which is disposed on the valve block 110. The shuttle valve 180 includes a fourth valve port 182, a fifth valve port 184, and a sixth valve port 186. The fourth valve port 182 is connected to the pressure relief pipeline, the fifth valve port 184 is connected to the pump supply oil circuit 250 of the tunneling machine, and the sixth valve port 186 is connected to the control port 260 of the pump supply oil circuit 250. Pressure feedback can be performed through the shuttle valve 180. Through the fourth valve port 182 and the fifth valve port 184, the shuttle valve 180 obtains the pressure inside the pressure regulating pipeline 170 and the pressure inside the pump supply oil circuit 250, respectively, and feeds back the higher pressure to the control port 260 of the pump supply oil circuit 250 through the sixth valve port 186, thus completing the pressure feedback. This enables the functional expansion module 100 to be interconnected with the tunneling machine's hydraulic system on various oil circuits when connected to the tunneling machine's hydraulic system, achieving unobstructed access.

[0097] Specifically, the shuttle valve 180 is disposed inside the valve block 110. The valve block 110 is also provided with a first interface 190 and a second interface 192. The first interface 190 is connected to the fifth valve port 184 of the shuttle valve 180 and the pump supply oil circuit 250 of the tunneling machine, respectively. The second interface 192 is connected to the sixth valve port 186 of the shuttle valve 180 and the control port 260 of the pump supply oil circuit 250, respectively. The pressure feedback process is performed through the second interface 192.

[0098] In one embodiment of the present invention, a tunneling machine is also provided, comprising: a main body; a functional expansion module 100 as described in any of the above embodiments, the functional expansion module 100 being disposed on the main body; a main engine oil circuit 200, connected to the main body and the functional expansion module 100, for driving the main body to work; a pilot oil supply oil circuit 220, connected to the main body and the functional expansion module 100; a control oil circuit 230, connected to the main body and the functional expansion module 100; and a functional expansion oil circuit, connected to the main body and the functional expansion module 100.

[0099] In this embodiment, the tunneling machine proposed by the present invention includes a main body and a functional expansion module 100 in any of the above embodiments, and therefore has all the beneficial effects of the functional expansion module 100 in any of the above embodiments.

[0100] Specifically, the function expansion module 100 is installed on the main body, thereby fixing the function expansion module 100. The tunneling machine also includes a main hydraulic circuit 200, a pilot oil supply circuit 220, a control hydraulic circuit 230, and a function expansion hydraulic circuit. The main hydraulic circuit 200 is connected to the main body and the function expansion module 100, used to drive the main body to work, and can supply oil to the function expansion hydraulic circuit through the function expansion module 100. The pilot oil supply circuit 220 is connected to the main body and the function expansion module 100, used to supply low-pressure oil to the control hydraulic circuit 230 and the function expansion module 100. The control hydraulic circuit 230 is connected to the main body and the function expansion module 100, and the oil in it is used to control the execution process of the main body. Specifically, the main action is the cutting action.

[0101] In this invention, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0102] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0103] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A functional expansion module, characterized in that, For use in tunneling machines, the functional expansion module includes: The valve block is used to connect with the main hydraulic circuit of the tunneling machine and the functional expansion hydraulic circuit of the tunneling machine; A first reversing valve is disposed on the valve block, and the valve port of the first reversing valve is respectively used to connect to the pilot oil supply circuit of the tunneling machine and the control oil circuit of the tunneling machine. When the first directional valve is in the first state, the oil in the pilot oil supply circuit can flow to the control oil circuit through the valve port of the first directional valve. When the first directional valve is in the second state, the valve block is internally connected, and the oil in the main oil circuit can flow to the functional expansion oil circuit through the valve block. A pressure sensor is used to detect the oil pressure inside the valve block and send the oil pressure to the controller of the tunneling machine so that the controller controls the cutting motor of the tunneling machine to work; The first reversing valve is disposed inside the valve block, and the functional expansion module further includes: The second directional valve is disposed inside the valve block, and the valve port of the second directional valve is respectively used to connect with the main oil circuit, the functional expansion oil circuit and the first directional valve; When the first directional valve is in the first state, the second directional valve is closed; When the first reversing valve is in the second state, the oil in the first reversing valve can flow to the second reversing valve, so that the second reversing valve opens, allowing the oil in the main oil circuit to flow to the functional expansion oil circuit through the second reversing valve.

2. The functional expansion module according to claim 1, characterized in that, The second directional valve includes a control valve port, and the first directional valve includes a first valve port, a second valve port, and a third valve port; The first valve port is connected to the pilot oil supply circuit, the second valve port is connected to the control oil circuit, and the third valve port is connected to the control valve port. When the first reversing valve is in the first state, the first valve port is connected to the second valve port; When the first reversing valve is in the second state, the first valve port is connected to the third valve port, and the third valve port is connected to the control valve port.

3. The functional expansion module according to claim 2, characterized in that, The pressure sensor includes: A detection probe is installed at the third valve port to detect the oil pressure at the third valve port and generate an electrical signal based on the oil pressure. The transmission unit is connected to the detection probe and is used to receive the electrical signal and transmit the electrical signal to the controller.

4. The functional expansion module according to claim 1, characterized in that, The valve block has a control oil port, an oil inlet, a first oil outlet, and a second oil outlet. The control oil port is used to connect with the pilot oil supply circuit, the oil inlet is used to connect with the main engine oil circuit, the first oil outlet is used to connect with the control oil circuit, and the second oil outlet is used to connect with the functional expansion oil circuit. The valve port of the first reversing valve is connected to the control oil port and the first oil outlet respectively, and the valve port of the second reversing valve is connected to the oil inlet and the second oil outlet respectively.

5. The functional expansion module according to claim 4, characterized in that, The functional expansion module also includes: A regulating valve is disposed inside the valve block. The valve port of the regulating valve is connected to the valve port of the second directional valve and the second oil outlet, respectively, and is used to control the flow rate of oil from the valve port of the second directional valve to the second oil outlet.

6. The functional expansion module according to claim 4, characterized in that, The valve block is also provided with a first oil return port, which is used to connect with the oil return circuit of the tunneling machine. The functional expansion module also includes: A pressure regulating pipe is installed inside the valve block. One end of the pressure regulating pipe is connected to the second directional valve, and the other end of the pressure regulating pipe is connected to the first return port. An overflow valve is installed on the pressure regulating pipeline to control the opening and closing of the pressure regulating pipeline.

7. The functional expansion module according to claim 6, characterized in that, The functional expansion module also includes: A throttle valve is installed on the pressure regulating pipeline, located between the second directional valve and the overflow valve, and is used to control the flow rate of oil in the pressure regulating pipeline.

8. The functional expansion module according to claim 6, characterized in that, The functional expansion module also includes: A shuttle valve is disposed on the valve block, and the shuttle valve includes a fourth valve port, a fifth valve port, and a sixth valve port; The fourth valve port is connected to the pressure regulating pipeline, the fifth valve port is connected to the pump oil supply pipeline of the tunneling machine, and the sixth valve port is connected to the control port of the pump oil supply pipeline.

9. A tunneling machine, characterized in that, include: ontology; The functional expansion module as described in any one of claims 1 to 8 is disposed on the main body; The main unit's oil circuit is connected to the main body and the functional expansion module, and is used to drive the main body to work; The pilot oil supply circuit is connected to the main body and the functional expansion module; The control oil circuit is connected to the main body and the functional expansion module; The function expansion oil circuit is connected to the main body and the function expansion module.

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