Heat dissipation and refueling system suitable for heading machine

Abstract

The utility model discloses a heat dissipation and refueling system suitable for a heading machine, which comprises a heading machine body, an advancing assembly arranged at the bottom of the heading machine body, a plurality of power oil cylinders arranged on the heading machine body, a hydraulic pump station arranged in the heading machine body and used for providing power for the power oil cylinders, and an oil pump motor set arranged on one side of the hydraulic pump station. An oil tank is arranged on the other side of the hydraulic pump station, a duplex plunger pump is installed at the output end of the oil pump motor set, an oil supply gear pump is arranged at the front end of the duplex plunger pump, a cooling gear pump is arranged at the rear end of the duplex plunger pump, a first oil suction pipe is arranged at the input end of the oil supply gear pump, and a second oil suction pipe is arranged at the input end of the cooling gear pump. According to the heat dissipation and refueling system suitable for the heading machine, circulation heat dissipation is designed for the whole system, the cooling efficiency of the oil tank of a hydraulic system of the heading machine is improved, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of roadheaders, in particular to a heat dissipation and refueling system suitable for roadheaders. Background Technique

[0002] A roadheader is a machine used to excavate roadways under flat ground. There are many types of roadheaders: classified by the operation object into ordinary machines and tunnel boring machines, and classified by the operation method into open-type roadheaders and shield-type roadheaders. For a hydraulic system, the viscosity of the hydraulic oil has a great relationship with the stable operation of the hydraulic system. Therefore, for a hydraulic system, it is necessary to ensure that the hydraulic oil has an optimal working viscosity so as to make the working efficiency of the hydraulic system reach the optimum. The viscosity of the hydraulic oil is actually controlled by the temperature of the hydraulic oil. The higher the temperature, the smaller the viscosity. And for all hydraulic systems, due to the heat generated by the temperature rise problem, the wear of hydraulic components is quite common. The roadheader hydraulic system also faces the same problem, which is determined by the temperature of the hydraulic oil in the roadheader, and the temperature of the hydraulic oil in the roadheader is mainly controlled by the hydraulic oil heat dissipation system of the roadheader.

[0003] Regarding the heat dissipation problem of the roadheader hydraulic system, the current heat dissipation of the roadheader hydraulic system is as follows: 1. Rely on the water system circulation to cool the oil; 2. Rely on the volume of the fuel tank to contact the air for heat dissipation; 3. Add a serpentine pipe inside the fuel tank to directly introduce the cooling water into the fuel tank. However, in these three methods, due to the overall structure design of the roadheader, the reserved space of the fuel tank is not large, so the heat dissipation efficiency of dissipating heat by contacting the fuel tank with the air is very low. Therefore, the cooling system of the roadheader basically relies on water cooling. However, due to different conditions in each mine, if the flow rate and pressure of the underground water system are insufficient, the temperature rise of the roadheader during use will be obvious, and in severe cases, it will also affect the use of the roadheader; using the third method will reduce the temperature of the fuel tank, but the maintenance is relatively difficult and if water enters the fuel tank, it will cause the hydraulic oil to emulsify. Content of the Utility Model

[0004] The purpose of the utility model is to provide a heat dissipation and refueling system suitable for roadheaders to solve the problems put forward in the above background technique.

[0005] To achieve the above object, the present utility model provides the following technical solutions: A heat dissipation and refueling system applicable to a roadheader, including a roadheader body. A traveling assembly is provided at the bottom of the roadheader body. A number of power cylinders are provided on the roadheader body. A hydraulic pump station for providing power to the power cylinders is provided inside the roadheader body. An oil pump motor set is provided on one side of the hydraulic pump station. A fuel tank is provided on the other side of the hydraulic pump station. And an output end of the oil pump motor set is installed with a double plunger pump. A fuel supply gear pump is provided at the front end of the double plunger pump. A cooling gear pump is provided at the rear end of the double plunger pump. And a first suction pipe is provided at an input end of the fuel supply gear pump. A second suction pipe is provided at an input end of the cooling gear pump. An output end of the cooling gear pump is communicated with an oil outlet pipe. A hydraulic oil radiator is installed on one side of the roadheader body close to the fuel tank. One end of the oil outlet pipe is communicated with an input end of the hydraulic oil radiator. An output end of the hydraulic oil radiator is communicated with a return pipe. An overflow pipe is communicated with the oil outlet pipe on a side close to the cooling gear pump. An overflow valve is installed at one end of the overflow pipe. The other end of the overflow pipe is communicated with the inside of the fuel tank.

[0006] Preferably, a fixing frame is provided at the bottom of the oil pump motor set. The oil pump motor set is connected to the inside of the roadheader body through the fixing frame. The fixing frame facilitates the installation of the oil pump motor set.

[0007] Preferably, one end of the second suction pipe and one end of the first suction pipe are both communicated with the inside of the fuel tank. And an oil suction filter is installed at a connection position between the second suction pipe and the fuel tank and at a connection position between the first suction pipe and the fuel tank. The oil suction filter is used for filtering the oil fluid before entering the pump.

[0008] Preferably, one end of the return pipe away from the hydraulic oil radiator is communicated with the inside of the fuel tank. And a return oil filter is provided at a connection position between the return pipe and the fuel tank. The return oil filter is used for filtering the returned oil fluid.

[0009] Preferably, one end of the oil outlet pipe is communicated with an output end of the cooling gear pump. One end of the overflow pipe close to the overflow valve is communicated with the oil outlet pipe.

[0010] Preferably, a mounting plate is connected to the bottom of the hydraulic oil radiator. The hydraulic oil radiator is connected to the inside of the roadheader body through the mounting plate. The mounting plate facilitates the installation of the hydraulic oil radiator.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] When the tunneling machine body is started, the cooling gear pump continuously operates to continuously suck out the oil in the fuel tank, transport it through the outlet pipe to the hydraulic oil radiator for cooling, and then return it to the inside of the fuel tank through the return pipe, thereby continuously circulating and cooling the hot oil in the fuel tank to achieve the purpose of temperature reduction. When the oil in the tunneling machine body decreases and needs to be refilled, open the overflow valve on the overflow pipe, and directly introduce the oil into the fuel tank to achieve the purpose of refueling. The entire system is designed for circulating heat dissipation, which speeds up the cooling efficiency of the fuel tank of the tunneling machine hydraulic system, improves the heat dissipation efficiency, continuously increases the heat dissipation efficiency of the fuel tank, and thereby reduces the temperature of the hydraulic system oil. Moreover, even when the water system has insufficient flow or water pressure due to working conditions, the cooling efficiency of the cooling system will not decrease too much, and the heat dissipation speed will be accelerated during shutdown heat dissipation. Brief Description of the Drawings

[0013] Figure 1 is a structural schematic diagram of the present invention;

[0014] Figure 2 is a partial sectional view structure diagram of the tunneling machine body of the present invention;

[0015] Figure 3 is a partial top view structure diagram of the present invention;

[0016] Figure 4 is a partial structure diagram of the outlet pipe of the present invention.

[0017] In the figure: 1. Tunneling machine body; 2. Traveling assembly; 3. Power oil cylinder; 4. Hydraulic pump station; 5. Oil pump motor group; 6. Double plunger pump; 7. Oil supply gear pump; 8. Cooling gear pump; 9. First suction pipe; 10. Second suction pipe; 11. Fuel tank; 12. Fixed frame; 13. Hydraulic oil radiator; 14. Outlet pipe; 15. Return pipe; 16. Suction oil filter; 17. Return oil filter; 18. Overflow pipe; 19. Overflow valve; 20. Installation plate. Detailed Description of the Preferred Embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1-4, the present utility model provides a heat dissipation and refueling system applicable to a roadheader, including a roadheader body 1. A traveling assembly 2 is provided at the bottom of the roadheader body 1. A plurality of power cylinders 3 are provided on the roadheader body 1. A hydraulic pump station 4 for providing power to the power cylinders 3 is provided inside the roadheader body 1. An oil pump motor set 5 is provided on one side of the hydraulic pump station 4. A fuel tank 11 is provided on the other side of the hydraulic pump station 4. And an output end of the oil pump motor set 5 is installed with a double plunger pump 6. A supply oil gear pump 7 is provided at the front end of the double plunger pump 6. A cooling gear pump 8 is provided at the rear end of the double plunger pump 6. And a first suction pipe 9 is provided at an input end of the supply oil gear pump 7. A second suction pipe 10 is provided at an input end of the cooling gear pump 8. An output end of the cooling gear pump 8 is communicated with an oil outlet pipe 14. A hydraulic oil radiator 13 is installed on one side of the roadheader body 1 close to the fuel tank 11. One end of the oil outlet pipe 14 is communicated with an input end of the hydraulic oil radiator 13. An output end of the hydraulic oil radiator 13 is communicated with a return pipe 15. One side of the oil outlet pipe 14 close to the cooling gear pump 8 is communicated with an overflow pipe 18. An overflow valve 19 is installed at one end of the overflow pipe 18. The other end of the overflow pipe 18 is communicated with the inside of the fuel tank 11.

[0020] Refer to Figures 1-4 , a fixing frame 12 is provided at the bottom of the oil pump motor set 5. The oil pump motor set 5 is connected to the inside of the roadheader body 1 through the fixing frame 12. One ends of both the second suction pipe 10 and the first suction pipe 9 are communicated with the inside of the fuel tank 11. And oil suction filters 16 are installed at connections of the second suction pipe 10 with the fuel tank 11 and the first suction pipe 9 with the fuel tank 11 respectively. One end of the return pipe 15 far from the hydraulic oil radiator 13 is communicated with the inside of the fuel tank 11. And a return oil filter 17 is provided at a connection of the return pipe 15 with the fuel tank 11.

[0021] Refer to Figures 1-4 , one end of the oil outlet pipe 14 is communicated with an output end of the cooling gear pump 8. One end of the overflow pipe 18 close to the overflow valve 19 is communicated with the oil outlet pipe 14. A mounting plate 20 is connected to the bottom of the hydraulic oil radiator 13. The hydraulic oil radiator 13 is connected to the inside of the roadheader body 1 through the mounting plate 20.

[0022] During specific use, for a heat dissipation and refueling system of a roadheader applicable to the utility model, during the use process, a hydraulic pump station 4 inside the roadheader body 1 provides power for a number of power cylinders 3. Specifically, the oil pump motor set 5 of the hydraulic pump station 4 works to drive the double plunger pump 6 to operate for oil suction. And the oil supply gear pump 7 is a pump for supplying and transporting hydraulic oil. After sucking oil through the first oil suction pipe 9, it is connected to the external oil supply pipeline assembly through the output end of the oil supply gear pump 7, and thus indirectly supplies oil to the power cylinder 3. During the use process, the temperature of the hydraulic oil inside the fuel tank 11 will rise. When the roadheader body 1 is started, the cooling gear pump 8 continuously works to continuously suck out the oil inside the fuel tank 11 and transport it through the oil outlet pipe 14 to the hydraulic oil radiator 13 for cooling, and then return to the inside of the fuel tank 11 through the return oil pipe 15, thereby continuously circulating and cooling the hot oil inside the fuel tank 11 to achieve the purpose of temperature reduction. If the oil in the roadheader body 1 decreases and needs to be refueled, open the overflow valve 19 on the overflow pipe 18, and directly introduce the oil into the fuel tank 11 to achieve the refueling purpose. In the design of the whole system, a cooling gear pump 8 is added after the double plunger pump 6 in the oil pump motor set 5. The oil suction port of the cooling gear pump 8 is connected to the fuel tank 11 through the second oil suction pipe 10 and the oil suction filter 16, and the oil outlet is connected to the hydraulic oil radiator 13 and then returns after being filtered by the return oil filter 17 for circulating heat dissipation, improving the heat dissipation efficiency. By continuously improving the heat dissipation efficiency of the fuel tank 11, the temperature of the hydraulic oil in the hydraulic system is further reduced. And even when there is insufficient flow or water pressure in the water system due to working conditions, the cooling efficiency of the cooling system will not decrease too much, and the heat dissipation speed will be accelerated when the machine stops for heat dissipation.

[0023] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A heat dissipation and oiling system for a tunnel boring machine, comprising a tunnel boring machine body (1), characterized in that: A travel assembly (2) is provided at the bottom of the tunneling machine body (1), a plurality of power cylinders (3) are provided on the tunneling machine body (1), a hydraulic pump station (4) for providing power to the power cylinders (3) is provided inside the tunneling machine body (1), an oil pump motor group (5) is provided on one side of the hydraulic pump station (4), an oil tank (11) is provided on the other side of the hydraulic pump station (4), a double plunger pump (6) is installed at the output end of the oil pump motor group (5), an oil supply gear pump (7) is provided at the front end of the double plunger pump (6), a cooling gear pump (8) is provided at the rear end of the double plunger pump (6), and a first oil suction pipe (9) is provided at the input end of the oil supply gear pump (7), The input end of the cooling gear pump (8) is provided with a second oil suction pipe (10), and the output end of the cooling gear pump (8) is connected to an oil outlet pipe (14). A hydraulic oil radiator (13) is installed on a side of the tunneling machine body (1) close to the oil tank (11), one end of the oil outlet pipe (14) is connected to the input end of the hydraulic oil radiator (13), and the output end of the hydraulic oil radiator (13) is connected to an oil return pipe (15). The side of the oil outlet pipe (14) close to the cooling gear pump (8) is connected to an overflow pipe (18), one end of the overflow pipe (18) is installed with an overflow valve (19), and the other end of the overflow pipe (18) is connected to the inside of the oil tank (11).

2. The heat dissipation and refueling system for a tunnel boring machine according to claim 1, characterized in that: A fixing frame (12) is provided at the bottom of the oil pump motor group (5), and the oil pump motor group (5) is connected to the interior of the tunneling machine body (1) via the fixing frame (12).

3. The heat dissipation and refueling system for a tunnel boring machine according to claim 1, characterized in that: One end of the second oil suction pipe (10) and one end of the first oil suction pipe (9) are both in communication with the interior of the oil tank (11), and an oil suction filter (16) is installed at the connection between the second oil suction pipe (10) and the oil tank (11) and at the connection between the first oil suction pipe (9) and the oil tank (11).

4. The heat dissipation and refueling system for a tunnel boring machine according to claim 1, characterized in that: One end of the oil return pipe (15) away from the hydraulic oil radiator (13) is in communication with the interior of the oil tank (11), and an oil return filter (17) is provided at the connection between the oil return pipe (15) and the oil tank (11).

5. The heat dissipation and refueling system for a tunnel boring machine according to claim 1, characterized in that: One end of the oil outlet pipe (14) is in communication with the output end of the cooling gear pump (8), and one end of the overflow pipe (18) close to the overflow valve (19) is in communication with the oil outlet pipe (14).

6. The heat dissipation and refueling system for a tunnel boring machine according to claim 1, characterized in that: The bottom of the hydraulic oil radiator (13) is connected to a mounting plate (20), and the hydraulic oil radiator (13) is connected to the interior of the tunneling machine body (1) via the mounting plate (20).

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