Cooling system of tunnel boring machine and tunnel boring machine

Abstract

The present invention proposes a cooling system for a tunnel boring machine and a tunnel boring machine, wherein the cooling system of the tunnel boring machine includes: a hydraulic cooling channel; a cutting cooling channel; a circulating cooling component, the circulating cooling component is connected to the hydraulic cooling channel and the cutting cooling channel, and the circulating cooling component includes a radiator; a fan component, used to supply air to the radiator; a first temperature detection component, arranged at the inlet end of the radiator, used to detect a first temperature at the inlet end of the radiator; a second temperature detection component, arranged at the outlet end of the radiator, used to detect a second temperature at the outlet end of the radiator; wherein the rotation speed of the fan component is determined according to the temperature difference between the first temperature and the second temperature.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel boring machines, and in particular to a cooling system of a tunnel boring machine and a tunnel boring machine. Background Art

[0002] In related technologies, equipment such as the hydraulic system and cutting motor of the tunnel boring machine generate a large amount of load, causing the temperature of the hydraulic oil and the cutting motor to continue to rise, and eventually leading to failure of the hydraulic system and the cutting motor. Therefore, the hydraulic oil and the cutting motor need to be cooled in time to ensure the normal operation of the equipment.

[0003] At present, external cooling water is usually used to transport cooling water to the hydraulic cooling channel and the cutting cooling channel to cool the hydraulic oil and the cutting motor. The used cooling water is directly discharged from the front end of the tunnel boring machine to improve the tunneling efficiency.

[0004] However, since the cooling water is discharged directly into the tunnel, it is easy to cause water accumulation in the tunnel, affecting safety and excavation efficiency. Summary of the Invention

[0005] The present invention aims to at least solve or improve one of the technical problems in the prior art that a roadheader uses an external cooling water method that directly discharges the cooling water into the roadway, which easily leads to water accumulation in the roadway.

[0006] To this end, a first aspect of the present invention provides a cooling system for a roadheader.

[0007] A second aspect of the present invention provides a roadheader.

[0008] In view of this, according to the first aspect of the present invention, the present invention proposes a cooling system for a tunnel boring machine, comprising: a hydraulic cooling channel; a cutting cooling channel; a circulating cooling component, the circulating cooling component is connected to the hydraulic cooling channel and the cutting cooling channel, and the circulating cooling component includes a radiator; a fan component, for supplying air to the radiator; a first temperature detection component, arranged at the inlet end of the radiator, for detecting a first temperature at the inlet end of the radiator; a second temperature detection component, arranged at the outlet end of the radiator, for detecting a second temperature at the outlet end of the radiator; wherein the rotational speed of the fan component is determined according to the temperature difference between the first temperature and the second temperature.

[0009] The cooling system of the tunnel boring machine proposed in the present invention includes a hydraulic cooling channel and a cutting cooling channel. The hydraulic cooling channel is matched with the hydraulic system, so that when a cooling medium passes through the hydraulic cooling channel, the hydraulic oil can be cooled. The cutting cooling channel is matched with at least one of the cutting motor and the cutting reducer, so that when a cooling medium passes through the cutting cooling channel, at least one of the cutting motor and the cutting reducer can be cooled.

[0010] The cooling system of the tunnel boring machine also includes a circulating cooling assembly and a fan assembly. The circulating cooling assembly includes a radiator. The circulating cooling assembly is connected to the hydraulic cooling channel and the cutting cooling channel. After the circulating cooling assembly is filled with a cooling medium, the cooling medium can circulate within the circulating cooling assembly and then into the hydraulic cooling channel and the cutting cooling channel. The radiator can dissipate the heat carried by the cooling medium after passing through the hydraulic cooling channel and the cutting cooling channel, thereby achieving circulating cooling. In addition, the fan assembly is positioned opposite the radiator and can supply air to the radiator, thereby increasing the radiator's heat dissipation efficiency.

[0011] The tunnel boring machine's cooling system also includes a first temperature detector and a second temperature detector. The first temperature detector is located at the radiator's inlet and detects the temperature of the cooling medium drawn into the radiator, i.e., the first temperature. The second temperature detector is located at the radiator's outlet and detects the temperature of the cooling medium discharged from the radiator, i.e., the second temperature. The fan assembly's speed is determined based on the temperature difference between the first and second temperatures. This means that the fan assembly's speed can be adjusted based on the radiator's actual cooling efficiency to achieve both cooling efficiency and energy savings. This improves the cooling efficiency of the circulating cooling assembly while reducing the tunnel boring machine's energy consumption.

[0012] In addition, the cooling system of the roadheader in the above technical solution provided by the present invention may also have the following additional technical features:

[0013] On the basis of the above technical solution, it further includes: a controller, which is electrically connected to the first temperature detection component, the second temperature detection component and the fan assembly. When the temperature difference is greater than or equal to the temperature threshold, the controller is used to control the fan assembly to increase the speed so that the temperature difference is less than the temperature threshold.

[0014] In this technical solution, the cooling system of the tunnel boring machine also includes a controller, which is electrically connected to the first temperature detection component, the second temperature detection component, and the fan assembly. The first temperature detected by the first temperature detection component and the second temperature detected by the second temperature detection component can be sent to the controller. The controller determines the temperature difference between the first temperature and the second temperature through calculation, and the controller can control the speed of the fan assembly according to the temperature difference. Specifically, when the temperature difference is greater than or equal to the temperature threshold, the controller can control the fan assembly to increase the speed so that the temperature difference is less than the temperature threshold to ensure the cooling effect. In addition, when the temperature difference is less than the temperature threshold, energy consumption can be reduced. In addition, after the temperature difference is less than the temperature threshold for a preset period of time, the controller can control the fan assembly to reduce the speed.

[0015] On the basis of any of the above technical solutions, further, the fan assembly includes: a frequency converter electrically connected to the controller; a fan electrically connected to the frequency converter, and the controller adjusts the speed of the fan through the frequency converter.

[0016] In this technical solution, the fan assembly includes a frequency converter and a fan. The fan and the frequency converter are electrically connected. The frequency converter is connected to a power supply, so that the fan is powered by the frequency converter. The controller and the frequency converter are electrically connected. The controller can control the fan speed by controlling the frequency converter. Its structure is simple and the control effect is stable.

[0017] On the basis of any of the above technical solutions, it further includes: a display electrically connected to the first temperature detection component and the second temperature detection component, for displaying the first temperature and the second temperature, or for displaying the temperature difference.

[0018] In this technical solution, the cooling system of the tunnel boring machine also includes a display, which is electrically connected to the first temperature detection component and the second temperature detection component. The display can display the first temperature and the second temperature, and can also display the temperature difference, so that the operator can check the cooling condition and detect whether the equipment is faulty in time.

[0019] On the basis of any of the above technical solutions, the circulating cooling component further includes: a liquid storage part, which is connected to the radiator; a pump body, which is arranged between the radiator and the liquid storage part, and is used to make the cooling medium in the liquid storage part and the radiator flow, and the liquid storage part, the pump body, the hydraulic cooling channel, the cutting cooling channel and the radiator form a circulation loop.

[0020] In this technical solution, the circulating cooling component also includes a liquid storage part and a pump body, and the liquid storage part, pump body, hydraulic cooling channel, cutting cooling channel and radiator form a circulation loop, wherein the liquid storage part can store a sufficient amount of cooling medium, and the pump body can provide power for the flow of the cooling medium, and then under the operation of the pump body, the cooling medium can circulate among the liquid storage part, hydraulic cooling channel, cutting cooling channel and radiator, and the cooling medium can absorb heat in the hydraulic cooling channel and the cutting cooling channel, and dissipate heat in the radiator, thereby realizing cyclic cooling. The above structure is simple and easy to produce.

[0021] On the basis of any of the above technical solutions, further, the outlet end of the hydraulic cooling channel and / or the outlet end of the cut cooling channel is connected to the inlet end of the radiator, and the outlet end of the radiator is connected to the liquid storage component.

[0022] In this technical solution, the outlet end of the hydraulic cooling channel is connected to the inlet end of the radiator, and the outlet end of the radiator is connected to the liquid storage part. That is, the cooling medium is discharged from the hydraulic cooling channel, dissipates heat directly in the radiator, and then returns to the liquid storage part. The above flow path can make the liquid in the liquid storage part at a lower temperature, reducing the impact of heat accumulation on other components of the tunnel boring machine. In addition, the cooling medium dissipates heat after absorbing heat, which can reduce the flow path of the high-temperature cooling medium and reduce the impact of the high-temperature cooling medium on other components of the tunnel boring machine.

[0023] The outlet end of the cut cooling channel is connected to the inlet end of the radiator, and the outlet end of the radiator is connected to the liquid storage part. That is, the cooling medium is discharged from the cut cooling channel, dissipates heat directly in the radiator, and then returns to the liquid storage part. The above flow path can make the liquid in the liquid storage part at a lower temperature, reducing the impact of heat accumulation on other components of the tunnel boring machine. In addition, the cooling medium dissipates heat after absorbing heat, which can reduce the flow path of the high-temperature cooling medium and reduce the impact of the high-temperature cooling medium on other components of the tunnel boring machine.

[0024] The outlet end of the hydraulic cooling channel and the outlet end of the cut cooling channel are connected to the inlet end of the radiator, and the outlet end of the radiator is connected to the liquid storage part. That is, the cooling medium is discharged from the hydraulic cooling channel and the cut cooling channel, directly dissipates heat in the radiator, and then returns to the liquid storage part. The above flow path can make the liquid in the liquid storage part at a lower temperature, reducing the impact of heat accumulation on other components of the tunnel boring machine. In addition, the cooling medium dissipates heat after absorbing heat, which can reduce the flow path of the high-temperature cooling medium and reduce the impact of the high-temperature cooling medium on other components of the tunnel boring machine.

[0025] On the basis of any of the above technical solutions, further, the hydraulic cooling channel and the cutting cooling channel are connected in parallel and communicated with the circulating cooling assembly; or the hydraulic cooling channel and the cutting cooling channel are connected in series and communicated with the circulating cooling assembly.

[0026] In this technical solution, the hydraulic cooling channel and the cutting cooling channel are connected in parallel with the circulating cooling component, so that the hydraulic system and the cutting motor or cutting reducer are cooled synchronously, thereby improving the cooling effect.

[0027] The hydraulic cooling channel and the cutting cooling channel are connected in series and communicated with the circulating cooling assembly, so that there is no pressure difference between the hydraulic cooling channel and the cutting cooling channel, ensuring the flow speed of the cooling medium in the hydraulic cooling channel and the cutting cooling channel, and improving the cooling effect.

[0028] On the basis of any of the above technical solutions, further, there are multiple radiators, and the multiple radiators are arranged in series.

[0029] In this technical solution, there are multiple radiators, which are connected in series, that is, multiple radiators are used to improve the heat dissipation effect, ensure the cooling degree of the cooling medium, and thus improve the cooling effect of the circulating cooling component.

[0030] On the basis of any of the above technical solutions, further, the solidification temperature of the cooling medium filled in the circulating cooling component is not higher than minus 10°C.

[0031] In this technical solution, the solidification temperature of the cooling medium filled in the circulating cooling component is no higher than minus 10°C, thereby achieving an anti-freeze effect and allowing the tunnel boring machine to operate in a low-temperature environment.

[0032] According to a second aspect of the present invention, the present invention proposes a roadheader, comprising: a cooling system for the roadheader as proposed in any one of the above technical solutions.

[0033] The tunnel boring machine proposed in the present invention includes the cooling system of the tunnel boring machine proposed in any one of the above technical solutions, and therefore has all the beneficial effects of the cooling system of the tunnel boring machine proposed in any one of the above technical solutions, which will not be listed one by one here.

[0034] Additional aspects and advantages of the invention will become apparent from the description which follows, or may be learned by practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0036] Figure 1 A schematic diagram showing a cooling system of a roadheader provided by one embodiment of the present invention, excluding hydraulic cooling channels and cutting cooling channels;

[0037] Figure 2 A schematic diagram of a cooling system for a roadheader provided by one embodiment of the present invention is shown;

[0038] Figure 3 A schematic diagram of a cooling system for a roadheader provided by one embodiment of the present invention is shown;

[0039] Figure 4 A schematic diagram of a fan assembly and a radiator in a cooling system of a roadheader provided by one embodiment of the present invention is shown;

[0040] Figure 5 A schematic diagram of a tunnel boring machine provided by an embodiment of the present invention is shown.

[0041] in, Figures 1 to 5 The corresponding relationship between the reference numerals and component names is as follows:

[0042] 100 cooling system of the tunnel boring machine, 110 hydraulic cooling channel, 120 cutting cooling channel, 130 circulating cooling assembly, 132 radiator, 134 liquid storage component, 136 pump body, 140 fan assembly, 142 inverter, 144 fan, 146 motor, 148 fan blades, 150 first temperature detection component, 160 second temperature detection component, 170 controller, 180 display, 200 tunnel boring machine, 210 cutting assembly, 220 walking assembly, 230 rear support assembly, 240 hydraulic system, 250 main body assembly, 260 shovel assembly, 270 transport assembly. DETAILED DESCRIPTION

[0043] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0044] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0045] Refer to the following Figures 1 to 5 The cooling system 100 and the tunnel boring machine 200 provided in accordance with some embodiments of the present invention will be described.

[0046] like Figures 1 to 3 As shown, according to the first aspect of the present invention, the present invention provides a cooling system 100 for a tunnel boring machine, comprising: a hydraulic cooling channel 110, a cutting cooling channel 120, a circulating cooling component 130, a fan component 140, a first temperature detection component 150 and a second temperature detection component 160. The hydraulic cooling channel 110, the cutting cooling channel 120 and the circulating cooling component 130 form a circulation loop, and after the cooling medium is filled in the circulating cooling component 130, the cooling medium can circulate between the hydraulic cooling channel 110, the cutting cooling channel 120 and the circulating cooling component 130, taking away the heat of the hydraulic system through the hydraulic cooling channel 110, and taking away the heat of the cutting motor 146 and / or the cutting reducer through the cutting cooling channel 120.

[0047] The circulating cooling component 130 includes a radiator 132 . The cooling medium can dissipate heat through the radiator 132 and cooperate with the fan component 140 to improve the heat dissipation effect of the radiator 132 .

[0048] In addition, a first temperature detection element 150 is set at the inlet end of the radiator 132 to detect the first temperature of the inlet end of the radiator 132, which reflects the temperature before the cooling medium enters the radiator 132. A second temperature element is set at the outlet end of the radiator 132 to detect the second temperature of the outlet end of the radiator 132, which reflects the temperature after the cooling medium is discharged from the radiator 132. The temperature difference between the first temperature and the second temperature can reflect the heat dissipation effect of the radiator 132.

[0049] The rotation speed of the fan assembly 140 is determined according to the temperature difference between the first temperature and the second temperature.

[0050] The cooling system 100 of the tunnel boring machine provided by the present invention includes a hydraulic cooling channel 110 and a cutting cooling channel 120. The hydraulic cooling channel 110 is matched with the hydraulic system, so that when a cooling medium passes through the hydraulic cooling channel 110, the hydraulic oil can be cooled. The cutting cooling channel 120 is matched with at least one of the cutting motor 146 and the cutting reducer, so that when a cooling medium passes through the cutting cooling channel 120, at least one of the cutting motor 146 and the cutting reducer can be cooled.

[0051] The cooling system 100 of the tunnel boring machine also includes a circulating cooling component 130 and a fan component 140, wherein the circulating cooling component 130 includes a radiator 132, and the circulating cooling component 130 is connected to the hydraulic cooling channel 110 and the cutting cooling channel 120. After the circulating cooling component 130 is filled with a cooling medium, the cooling medium can circulate in the circulating cooling component 130 and pass into the hydraulic cooling channel 110 and the cutting cooling channel 120 for circulation. In addition, the radiator 132 can dissipate the heat carried by the cooling medium after passing through the hydraulic cooling channel 110 and the cutting cooling channel 120, thereby realizing circulating cooling.

[0052] Furthermore, the fan assembly 140 is disposed facing the radiator 132 and can supply air to the radiator 132 , thereby increasing the heat dissipation efficiency of the radiator 132 .

[0053] The cooling system 100 of the tunnel boring machine also includes a first temperature detection component 150 and a second temperature detection component 160. The first temperature detection component 150 is arranged at the inlet end of the radiator 132, and is used to detect the temperature of the cooling medium inhaled by the radiator 132, that is, the first temperature. The second temperature detection component 160 is arranged at the outlet end of the radiator 132, and is used to detect the temperature of the cooling medium discharged from the radiator 132, that is, the second temperature.

[0054] Among them, the rotation speed of the fan component 140 is determined according to the temperature difference between the first temperature and the second temperature, that is, the rotation speed of the fan component 140 can be adjusted according to the actual heat dissipation effect of the radiator 132 to achieve the purpose of taking into account both the heat dissipation effect and energy saving, thereby improving the cooling effect of the circulating cooling component 130 while reducing the energy consumption of the tunnel boring machine 200.

[0055] As described above, the first temperature detection element 150 and the second temperature detection element 160 are used to monitor the heat dissipation efficiency of the radiator 132, and the speed of the fan assembly 140 is adjusted in real time through the inverter 142 to reduce energy consumption and improve cooling efficiency.

[0056] The heat dissipation efficiency of the radiator 132 can be automatically adjusted as needed by adjusting the rotation speed of the fan assembly 140, thereby further reducing energy consumption and improving system efficiency.

[0057] In addition, the cooling medium adopts a self-circulating cooling working mode, which does not require external water supply and does not require the cooling medium to be discharged into the tunnel, reducing the workload of daily maintenance and reducing the waste of water resources.

[0058] like Figures 1 to 3 As shown, as a possible embodiment of the present invention, the cooling system 100 of the tunnel boring machine also includes a controller 170 electrically connected to the first temperature detection component 150, the second temperature detection component 160 and the fan assembly 140, wherein the controller 170 can be a processor or a programmable controller, etc.

[0059] The controller 170 can receive the first temperature and the second temperature transmitted by the first temperature detection component 150 and the second temperature detection component 160. The controller 170 can calculate the temperature difference between the first temperature and the second temperature through the program thereon, and then determine the relationship between the temperature difference and the temperature threshold. When the temperature difference is greater than or equal to the temperature threshold, the controller 170 can control the fan assembly 140 to increase the speed so that the temperature difference is less than the temperature threshold.

[0060] In this embodiment, the cooling system 100 of the tunnel boring machine also includes a controller 170, which is electrically connected to the first temperature detection component 150, the second temperature detection component 160 and the fan assembly 140, so that the first temperature detected by the first temperature detection component 150 and the second temperature detected by the second temperature detection component 160 can be sent to the controller 170, and the controller 170 determines the temperature difference between the first temperature and the second temperature through calculation, and the controller 170 can control the rotation speed of the fan assembly 140 according to the temperature difference. Specifically, when the temperature difference is greater than or equal to the temperature threshold, the controller 170 can control the fan assembly 140 to increase the rotation speed so that the temperature difference is less than the temperature threshold to ensure the cooling effect, and when the temperature difference is less than the temperature threshold, energy consumption can be reduced.

[0061] Furthermore, after the temperature difference is less than the temperature threshold and lasts for a preset period of time, the controller 170 can control the fan assembly 140 to reduce the rotation speed.

[0062] As long as the temperature difference meets the temperature threshold, the speed of the fan assembly 140 can be 0, that is, the fan assembly 140 stops running.

[0063] The controller 170 can be integrated with the whole machine controller of the tunnel boring machine 200 .

[0064] like Figures 1 to 3 As shown, as a possible embodiment of the present invention, the fan assembly 140 includes an inverter 142 and a fan 144. The fan 144 is connected to the power supply through the inverter 142, and the controller 170 is electrically connected to the inverter 142 to adjust the output of the inverter 142, thereby realizing the adjustment of the speed of the fan 144.

[0065] In this embodiment, the fan assembly 140 includes a frequency converter 142 and a fan 144. The fan 144 is electrically connected to the frequency converter 142. The frequency converter 142 is connected to a power supply, so that the fan 144 is powered by the frequency converter 142. The controller 170 is electrically connected to the frequency converter 142. The controller 170 can control the speed of the fan 144 by controlling the frequency converter 142. The structure is simple and the control effect is stable.

[0066] Specifically, the fan 144 includes a motor 146 and blades 148 . The blades 148 are disposed on an output shaft of the motor 146 . The motor 146 is electrically connected to the inverter 142 . The controller 170 can adjust the rotation speed of the motor 146 through the inverter 142 .

[0067] A first temperature detection element 150 and a second temperature detection element 160 are used to measure basic parameters, namely the first temperature and the second temperature. Based on these two sets of basic parameters, the controller 170 calculates other required related control data, and the frequency converter 142 is used to realize real-time adjustment of the rotation speed of the fan assembly 140, thereby reducing energy consumption and improving efficiency. The self-circulating cooling method of the cooling medium is used to reduce the waste of water resources and the workload of daily maintenance caused by traditional methods.

[0068] like Figures 1 to 3 As shown, as a possible embodiment of the present invention, the cooling system 100 of the tunnel boring machine also includes a display 180, which is electrically connected to the first temperature detection component 150 and the second temperature detection component 160, and is used to display the first temperature and the second temperature, or to display the temperature difference.

[0069] In this embodiment, the cooling system 100 of the tunnel boring machine also includes a display 180, which is electrically connected to the first temperature detection component 150 and the second temperature detection component 160. The display 180 can display the first temperature and the second temperature, and can also display the temperature difference, so that the operator can check the cooling condition and detect whether the equipment is faulty in a timely manner.

[0070] Furthermore, the display 180 may be electrically connected to the first temperature detecting member 150 and the second temperature detecting member 160 through the controller 170 .

[0071] like Figures 1 to 3 As shown, as a possible embodiment of the present invention, the circulating cooling component 130 also includes a liquid storage member 134 and a pump body 136. The radiator 132 and the liquid storage member 134 are connected. The pump body 136 is arranged between the radiator 132 and the liquid storage member 134 to make the cooling medium in the liquid storage member 134 and the radiator 132 flow. The liquid storage member 134, the pump body 136, the hydraulic cooling channel 110, the cutting cooling channel 120 and the radiator 132 form a circulation loop.

[0072] In this embodiment, the circulating cooling component 130 also includes a liquid storage part 134 and a pump body 136. The liquid storage part 134, the pump body 136, the hydraulic cooling channel 110, the cutting cooling channel 120 and the radiator 132 form a circulation loop, wherein the liquid storage part 134 can store a sufficient amount of cooling medium, and the pump body 136 can provide power for the flow of the cooling medium. Then, under the operation of the pump body 136, the cooling medium can circulate among the liquid storage part 134, the hydraulic cooling channel 110, the cutting cooling channel 120 and the radiator 132. The cooling medium can absorb heat in the hydraulic cooling channel 110 and the cutting cooling channel 120, and dissipate heat in the radiator 132, thereby realizing cyclic cooling. The above structure is simple and easy to produce.

[0073] Specifically, the top of the liquid reservoir 134 is provided with an exhaust port, and the pump body 136 is connected to the bottom of the liquid reservoir 134. Furthermore, the liquid reservoir 134 includes a first water tank and a second water tank, the first water tank and the second water tank being connected, the first water tank being higher than the second water tank, and the exhaust port is provided on the first water tank, thereby ensuring that the exhaust port is higher than the pump body 136.

[0074] As a possible embodiment of the present invention, the outlet end of the hydraulic cooling channel 110 is connected to the inlet end of the radiator 132 , and the outlet end of the radiator 132 is connected to the liquid storage member 134 .

[0075] In this embodiment, the outlet end of the hydraulic cooling channel 110 is connected to the inlet end of the radiator 132, and the outlet end of the radiator 132 is connected to the liquid storage part 134. That is, the cooling medium is discharged from the hydraulic cooling channel 110, directly dissipates heat in the radiator 132, and then returns to the liquid storage part 134. The above flow path can make the liquid in the liquid storage part 134 at a lower temperature, reducing the impact of heat accumulation on other components of the tunnel boring machine 200. In addition, the cooling medium dissipates heat after absorbing heat, which can reduce the flow path of the high-temperature cooling medium and reduce the impact of the high-temperature cooling medium on other components of the tunnel boring machine 200.

[0076] That is, the pump body 136 is arranged between the cutting cooling channel 120 and the liquid storage part 134. The pump body 136 pumps the cooling medium in the liquid storage part 134 into the cutting cooling channel 120 to cool the cutting motor 146 or the cutting reducer. After the cooling medium is discharged from the cutting cooling channel 120, it enters the hydraulic cooling channel 110 to cool the hydraulic oil. After the cooling medium is discharged from the hydraulic cooling channel 110, it enters the radiator 132 for heat dissipation and cooling. After that, the cooling medium returns to the liquid storage part 134.

[0077] like Figure 2 As shown, as a possible embodiment of the present invention, the outlet end of the cut cooling channel 120 is connected to the inlet end of the radiator 132 , and the outlet end of the radiator 132 is connected to the liquid storage member 134 .

[0078] In this embodiment, the outlet end of the cut cooling channel 120 is connected to the inlet end of the radiator 132, and the outlet end of the radiator 132 is connected to the liquid storage part 134. That is, the cooling medium is discharged from the cut cooling channel 120, directly dissipates heat in the radiator 132, and then returns to the liquid storage part 134. The above flow path can make the liquid in the liquid storage part 134 at a lower temperature, reducing the impact of heat accumulation on other components of the tunnel boring machine 200. In addition, the cooling medium dissipates heat after absorbing heat, which can reduce the flow path of the high-temperature cooling medium and reduce the impact of the high-temperature cooling medium on other components of the tunnel boring machine 200.

[0079] That is, the pump body 136 is arranged between the hydraulic cooling channel 110 and the liquid storage part 134. The pump body 136 pumps the cooling medium in the liquid storage part 134 into the hydraulic cooling channel 110 to cool the hydraulic oil. After the cooling medium is discharged from the hydraulic cooling channel 110, it enters the cutting cooling channel 120 to cool the cutting motor 146 or the cutting reducer. After the cooling medium is discharged from the cutting cooling channel 120, it enters the radiator 132 for heat dissipation and cooling. After that, the cooling medium returns to the liquid storage part 134.

[0080] like Figure 3As shown, as a possible embodiment of the present invention, the outlet end of the hydraulic cooling channel 110 and the outlet end of the cutting cooling channel 120 are both connected to the inlet end of the radiator 132 , and the outlet end of the radiator 132 is connected to the liquid storage member 134 .

[0081] In this embodiment, the outlet end of the hydraulic cooling channel 110 and the outlet end of the cutting cooling channel 120 are connected to the inlet end of the radiator 132, and the outlet end of the radiator 132 is connected to the liquid storage part 134. That is, the cooling medium is discharged from the hydraulic cooling channel 110 and the cutting cooling channel 120, directly dissipates heat in the radiator 132, and then returns to the liquid storage part 134. The above flow path can make the liquid in the liquid storage part 134 at a lower temperature, reducing the impact of heat accumulation on other components of the tunnel boring machine 200. In addition, the cooling medium dissipates heat after absorbing heat, which can reduce the flow path of the high-temperature cooling medium and reduce the impact of the high-temperature cooling medium on other components of the tunnel boring machine 200.

[0082] That is, the hydraulic cooling channel 110 and the cutting cooling channel 120 are connected in parallel with the outlet end of the pump body 136, and the inlet end of the water pump is connected to the liquid storage part 134. The pump body 136 pumps the cooling medium in the liquid storage part 134 into the hydraulic cooling channel 110 and the cutting cooling channel 120 to cool the cutting motor 146, the cutting reducer and the hydraulic oil. After the cooling medium is discharged from the hydraulic cooling channel 110 and the cutting cooling channel 120, it enters the radiator 132 for heat dissipation and cooling, and then the cooling medium returns to the liquid storage part 134.

[0083] like Figure 3 As shown, as a possible embodiment of the present invention, the hydraulic cooling channel 110 and the cutting cooling channel 120 are connected in parallel and communicated with the circulating cooling assembly 130 .

[0084] In this embodiment, the hydraulic cooling channel 110 and the cutting cooling channel 120 are connected in parallel to the circulating cooling assembly 130, so that the hydraulic system and the cutting motor 146 or the cutting reducer are cooled synchronously, thereby improving the cooling effect.

[0085] like Figure 2 As shown, as a possible embodiment of the present invention, the hydraulic cooling channel 110 and the cutting cooling channel 120 are connected in series and communicated with the circulating cooling assembly 130 .

[0086] In this embodiment, the hydraulic cooling channel 110 and the cutting cooling channel 120 are connected in series and communicated with the circulating cooling assembly 130, so that there is no pressure difference between the hydraulic cooling channel 110 and the cutting cooling channel 120, ensuring the flow speed of the cooling medium in the hydraulic cooling channel 110 and the cutting cooling channel 120, thereby improving the cooling effect.

[0087] like Figure 4 As shown, as a possible embodiment of the present invention, the heat sink 132 is disposed on the fan assembly 140. Specifically, the heat sink 132 and the fan blades 148 are disposed opposite to each other.

[0088] In this embodiment, the radiator 132 is arranged on the fan assembly 140, that is, the radiator 132 and the fan assembly 140 form a modular structure, so there is no need to separately position the radiator 132 and the fan assembly 140. In addition, the radiator 132 and the fan assembly 140 are relatively small in size, and both are relatively easy to install, which can reduce the difficulty of assembly during excavation.

[0089] As a possible embodiment of the present invention, there are multiple radiators 132 , and the multiple radiators 132 are arranged in series.

[0090] In this embodiment, there are multiple radiators 132, and the multiple radiators 132 are arranged in series, that is, multiple radiators 132 are used to improve the heat dissipation effect, ensure the cooling degree of the cooling medium, and thus improve the cooling effect of the circulating cooling component 130.

[0091] As a possible embodiment of the present invention, the solidification temperature of the cooling medium filled in the circulating cooling component 130 is not higher than -10°C.

[0092] In this embodiment, the freezing temperature of the cooling medium filled in the circulating cooling assembly 130 is not higher than minus 10° C., thereby achieving an antifreeze effect, allowing the tunnel boring machine 200 to operate in a low-temperature environment.

[0093] Furthermore, the solidification temperature of the cooling medium filled in the circulating cooling component 130 is not higher than -20°C, 30°C or 40°C.

[0094] Specifically, the cooling medium may be a mixture of water and ethylene glycol.

[0095] like Figure 5 As shown, according to the second aspect of the present invention, the present invention provides a roadheader 200, comprising: a cooling system 100 for the roadheader provided by any of the above embodiments.

[0096] The tunnel boring machine 200 proposed in the present invention includes the cooling system 100 of the tunnel boring machine provided in any of the above embodiments, and therefore has all the beneficial effects of the cooling system 100 of the tunnel boring machine provided in any of the above embodiments, which will not be listed one by one here.

[0097] The roadheader 200 further includes a cutting assembly 210, a traveling assembly 220, a rear support assembly 230, a hydraulic system 240, a body assembly 250, a blade assembly 260, and a transport assembly 270. The cutting assembly 210 includes a cutting motor and a cutting reducer.

[0098] The hydraulic cooling channel 110 can be provided on the hydraulic system in the form of a heat exchanger. The cutting cooling channel 120 is provided on the cutting assembly 210. To ensure the normal circulation of the cooling medium, one end of the pipeline of the circulating cooling assembly 130 is provided higher than the cutting assembly 210.

[0099] Furthermore, a flushing component is included for spraying the radiator 132 and the fan assembly 140, thereby reducing dust on the radiator 132 and the fan assembly 140 and ensuring the heat dissipation effect of the radiator 132. The flushing component can work at regular intervals.

[0100] The reservoir 134 and the pump body 136 may be disposed on the rear support assembly 230 .

[0101] Specifically, the liquid storage member 134 can be set at the tail of the tunnel boring machine 200, for example, below the transport component 270, and the pump body 136 can be set on one side of the liquid storage member 134 so that the cooling medium can circulate. Before the cooling medium returns to the liquid storage member 134, it will dissipate heat through the radiator 132. In addition, a first temperature detection member 150 is set at the inlet end of the radiator 132, and a second temperature detection member 160 is set at the outlet end of the radiator 132. The first temperature detection member 150 and the second temperature detection member 160 can transmit the detection signal to On the controller 170, the controller 170 transports according to the first temperature and the second temperature, and transmits the first temperature and the second temperature to the display 180 through the bus. The display 180 can display the first temperature and the second temperature. At the same time, the controller 170 can calculate the temperature difference between the first temperature and the second temperature. When the temperature difference exceeds the temperature threshold, the controller 170 sends a control signal to the inverter 142 through the bus to adjust the speed of the fan 144 so that the temperature difference between the inlet and outlet ends of the radiator 132 is maintained within the temperature threshold.

[0102] In the present invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless expressly limited otherwise. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0103] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or units referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0104] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these 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 any one or more embodiments or examples.

[0105] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A cooling system for a roadheader, characterized in that: include: hydraulic cooling channels; Cutting cooling channels; A circulating cooling assembly, the circulating cooling assembly being in communication with the hydraulic cooling channel and the cutting cooling channel, the circulating cooling assembly comprising a radiator; a fan assembly, configured to supply air to the radiator; a first temperature detecting member, disposed at an inlet end of the radiator, for detecting a first temperature at the inlet end of the radiator; a second temperature detecting member, disposed at an outlet end of the radiator, for detecting a second temperature at the outlet end of the radiator; wherein the rotation speed of the fan assembly is determined according to the temperature difference between the first temperature and the second temperature; The cooling system of the roadheader further includes: The controller is electrically connected to the first temperature detection component, the second temperature detection component and the fan assembly. When the temperature difference is greater than or equal to the temperature threshold, the controller is used to control the fan assembly to increase the speed so that the temperature difference is less than the temperature threshold.

2. The cooling system of the roadheader according to claim 1, characterized in that: The fan assembly includes: A frequency converter, electrically connected to the controller; The fan is electrically connected to the inverter, and the controller adjusts the speed of the fan through the inverter.

3. The cooling system of the roadheader according to claim 1 or 2, characterized in that: Also includes: A display is electrically connected to the first temperature detecting element and the second temperature detecting element, and is used to display the first temperature and the second temperature, or to display the temperature difference.

4. The cooling system of the roadheader according to claim 1 or 2, characterized in that: The circulating cooling assembly also includes: a liquid storage component, connected to the radiator; The pump body is arranged between the radiator and the liquid storage member, and is used to make the cooling medium in the liquid storage member and the radiator flow. The liquid storage member, the pump body, the hydraulic cooling channel, the cut cooling channel and the radiator form a circulation loop.

5. The cooling system of the roadheader according to claim 4, characterized in that: The outlet end of the hydraulic cooling channel and / or the outlet end of the cut cooling channel is communicated with the inlet end of the radiator, and the outlet end of the radiator is communicated with the liquid storage member.

6. The cooling system of the roadheader according to claim 1 or 2, characterized in that: The hydraulic cooling channel and the cutting cooling channel are connected in parallel and communicate with the circulating cooling assembly; or The hydraulic cooling channel and the cutting cooling channel are connected in series and communicate with the circulating cooling assembly.

7. The cooling system of the roadheader according to claim 1 or 2, characterized in that: There are multiple radiators, and the multiple radiators are connected in series.

8. The cooling system of the roadheader according to claim 1 or 2, characterized in that: The solidification temperature of the cooling medium filled in the circulating cooling component is not higher than minus 10°C.

9. A tunnel boring machine, characterized in that: include: A cooling system for a roadheader according to any one of claims 1 to 8.

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