Tunneling equipment

Abstract

The utility model provides tunneling equipment, and belongs to the field of tunnel cooling devices. The tunneling equipment comprises a shield body and a high-pressure air source, a cutterhead and a soil bin are arranged at the front end of the shield body, a vortex tube is installed on a partition plate or a frame on the side, away from the cutterhead, of the soil bin, the cold air outlet end of the vortex tube faces the cutterhead, and a compressed air inlet of the vortex tube is communicated with the high-pressure air source through a channel. The cooling air generated by the vortex tube is used for cooling the tunnel face, the cooling efficiency is high, the high-pressure air source of the tunneling equipment is used for providing compressed air for the vortex tube, new large equipment does not need to be introduced, and the influence on the overall layout of the tunneling equipment is small.

Description

Technical Field

[0001] The utility model belongs to the field of tunnel cooling devices, in particular to a tunneling device. Background Art

[0002] During tunnel construction, the friction between the tool and the face will cause the temperature of the face to rise to over 40°C. Due to the poor air flow at the face, it is difficult to cool down the face quickly. The comfort of the people working here is poor, resulting in low work efficiency and even heat stroke.

[0003] To solve the above problems, refrigeration equipment can be used to quickly cool down the palm face. For example, a Chinese utility model patent with authorization announcement number CN210660173U and authorization announcement date June 2, 2020 discloses a palm face cooling device, which includes a wind tube for blowing air to the palm face and a refrigeration device for cooling the air in the wind tube. The refrigeration equipment includes a water cooler, a condenser, an evaporator and an air cooler, wherein the water cooler is used to provide cooling water to the condenser, and the condenser is used to cool the air in the evaporator. The evaporator is connected to the air cooler and a circulating pump is provided between the two to allow the cooled air to reach the air cooler. The air cooler is installed in the wind tube, and the cooled air is mixed with the air in the wind tube and blown toward the palm face together.

[0004] Although the above technical solution improves the cooling efficiency of the tunnel face, the refrigeration equipment occupies a large space and the air duct is difficult to arrange, which seriously affects the overall layout of the tunneling equipment. In addition, the use of cooling water as a medium to cool the air results in a small reduction in air temperature and a poor cooling effect. Utility Model Content

[0005] The utility model aims to provide a tunneling device to solve the technical problems in the prior art that the tunnel face cooling device occupies a large space and affects the overall layout of the tunneling device, and the technical problem that the cooling effect of using cooling water as a medium to cool the air and finally cooling the tunnel face is poor.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the tunneling equipment provided by the utility model is:

[0007] A tunneling device comprises a shield body and a high-pressure air source. A cutter disc and a soil bin are arranged at the front end of the shield body. A vortex tube is installed on a partition or a frame on a side of the soil bin away from the cutter disc. The cold air outlet end of the vortex tube faces the cutter disc. The compressed air inlet of the vortex tube is connected with the high-pressure air source through an air supply channel.

[0008] As a further improvement, the air supply channel includes an air storage tank connected in series between the high-pressure air source and the vortex tube.

[0009] As a further improvement, a pressure regulating valve for regulating the compressed air pressure is provided on the air supply channel downstream of the air storage tank.

[0010] As a further improvement, a guide tube for blowing the cold air toward the tunnel face or the tool is installed at the cold air outlet end of the vortex tube.

[0011] As a further improvement, a plurality of vortex tubes are provided and evenly distributed along the circumference of the soil bin.

[0012] As a further improvement, the vortex tube is detachably connected to the partition or the frame.

[0013] As a further improvement, the cold air outlet end of the vortex tube is formed with an external thread, and a threaded hole for installing the vortex tube is formed on a partition or frame on one side of the soil bin away from the cutter disc.

[0014] As a further improvement, the hot air outlet end of the vortex tube is connected to a heat conducting pipe for guiding the hot air away from the shield body.

[0015] As a further improvement, a temperature sensor for monitoring the temperature of the tunnel face or the temperature of the tool is provided on the cutterhead.

[0016] As a further improvement, the high pressure gas source is an air compressor.

[0017] The beneficial effect of the tunneling equipment provided by the utility model is that the tunneling equipment is an improvement on the prior art. The utility model installs a vortex tube on the tunneling equipment and uses the cold air generated by the vortex tube to cool the tunnel face or the tool, thereby obtaining better cooling efficiency. In addition, the utility model uses the high-pressure air source on the tunneling equipment to provide compressed air for the vortex tube, does not need to introduce new large equipment, and has little impact on the overall layout of the tunneling equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the tunneling equipment in the utility model;

[0019] Figure 2 This is a schematic diagram of the arrangement structure of the vortex tube in the utility model;

[0020] Figure 3 It is a structural schematic diagram of the vortex tube in the utility model.

[0021] Description of reference numerals:

[0022] 1. Cutter disc; 2. Partition; 3. Vortex tube; 31. Cold air outlet; 32. Hot air outlet; 33. Compressed air inlet; 4. Air compressor; 5. Air storage tank; 6. Pressure regulating valve; 7. Manual ball valve; 8. Heat transfer branch pipe; 9. Heat transfer main pipe; 10. Air supply branch pipeline; 11. Air supply main pipeline; 12. Shield. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the embodiments.

[0024] The tunneling equipment in the utility model utilizes the cooling air generated by the vortex tube to cool the tunnel face, and the cooling efficiency is high. The high-pressure air source of the tunneling equipment is used to provide compressed air for the vortex tube, and there is no need to introduce new large equipment, which has little impact on the overall layout of the tunneling equipment.

[0025] Specific embodiment 1 of the excavation equipment provided by the utility model:

[0026] The tunneling equipment is a shield machine, see the attached Figure 1 and attached Figure 2 , including a shield body 12, a cutter disc 1 and a soil bin are provided at the front end of the shield body 12, a partition 2 for separating the soil bin and the shield body 12 is provided on the side of the soil bin away from the cutter disc 1, a plurality of threaded holes evenly distributed along the circumference of the partition 2 are opened on the partition 2, a vortex tube 3 is installed in the threaded hole, and the cold air blown out by the vortex tube 3 is used to cool the tunnel face or the tool.

[0027] The cold air outlet 31 end of the vortex tube 3 is formed with an external thread to cooperate with the thread of the threaded hole. The end face of the cold air outlet 31 end of the vortex tube 3 passes through the threaded hole. A guide tube is also fixedly installed at the cold air outlet 31 end of the vortex tube 3. The guide tube is bent according to needs to guide the cold air blown out of the cold air outlet 31 end of the vortex tube 3 to the palm face or the tool to improve the cooling efficiency.

[0028] The compressed air inlet 33 of the vortex tube 3 needs to be introduced with compressed air to generate cold air and hot air. In this embodiment, the shield machine's own air compressor 4 is used as a high-pressure air source to provide compressed air for the vortex tube 3, without the need to introduce a new high-pressure air source, which has little impact on the overall layout of the tunneling equipment. Specifically, the compressed air inlet 33 of each vortex tube 3 is connected to an air supply branch pipeline 10, and the air supply branch pipelines 10 converge into a main air supply pipeline 11. The main air supply pipeline 11 is divided into multiple branches to the air compressor 4, so as to be connected to multiple air compressors 4 respectively. Each branch connected to the air compressor 4 is provided with a manual ball valve 7 for controlling the interruption of air flow, and the main air supply pipeline 11 is provided with an air storage tank 5, a manual ball valve 7 and a pressure regulating valve 6 in sequence along the flow direction of the air flow. The air storage tank 5 is used to store compressed air to prevent pressure fluctuations caused by unbalanced air consumption; the pressure regulating valve 6 can adjust the air pressure leading to the vortex tube 3 to ensure the stability of the front-end pressure, and adjust the temperature of the cold air ejected from the vortex tube 3 by adjusting the pressure. The air supply branch pipeline 10, the main air supply pipeline 11 and the air storage tank 5 are all part of the air supply channel.

[0029] The hot air outlet 32 ​​of the vortex tube 3 is connected to a heat conducting branch pipe 8, and each heat conducting branch pipe 8 is collected on a heat conducting main pipe 9, and the hot air is led out of the tunnel by the heat conducting main pipe 9. When hot air is needed in the tunnel, the heat conducting main pipe 9 can also be used to lead the hot air to the required place. The heat conducting branch pipe 8 and the heat conducting main pipe 9 are both heat conducting pipes.

[0030] A temperature sensor is provided on the cutter head 1 to monitor the temperature of the tunnel face or the cutter in real time, so as to cool the tunnel face or the cutter in time.

[0031] The specific structure of the vortex tube 3 is shown in the attached Figure 3 The structure of the vortex tube 3 is prior art and will not be described in detail here. The temperature of the cold air generated by the vortex tube 3 can reach -50°C, with higher cooling efficiency, and can reduce the temperature of the tunnel face to a suitable temperature range in a short time.

[0032] In other embodiments, the temperature sensor may not be provided on the cutter head 1. In this embodiment, the vortex tube 3 may be started at a fixed time to cool the tunnel face and the cutter.

[0033] In other real-time methods, the vortex tubes 3 can also be centrally arranged at locations where manual work is required, and only a short-term temporary cooling is performed on the locations. The number of vortex tubes 3 arranged can also be only one or two.

[0034] In other embodiments, the guide tube may not be installed at the cold air outlet 31 end of the vortex tube 3, but the vortex tube 3 may be installed at an angle so that the cold air is blown toward the tunnel face or the tool.

[0035] In other embodiments, the pressure regulating valve 6 may not be provided, so that the vortex tube 3 is directly connected to the air storage tank 5. In this case, the manual ball valve 7 is used to control the on-off of the compressed air without regulating the pressure of the compressed air. It is also possible that both the air storage tank 5 and the pressure regulating valve 6 are not provided, so that the vortex tube 3 is directly connected to the air compressor 4.

[0036] In other embodiments, the vortex tube 3 and the partition 2 may also have other connection forms. For example, the partition 2 only has a light hole for the cold air outlet 31 end of the vortex tube 3 to pass through, a connecting plate is welded and fixed to the vortex tube 3, and bolt holes are correspondingly opened on the connecting plate and the partition 2, and the vortex tube 3 can be fixedly installed on the partition 2 by bolts.

[0037] The excavation equipment may also be a TBM. Since the TBM does not have a partition 2, the vortex tube 3 can be fixedly installed on the frame of the TBM soil bin away from the cutterhead 1 by using a clamp.

[0038] In other embodiments, the high-pressure gas source may also be a high-pressure gas tank disposed on a rear supporting trailer.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A tunneling device, comprising a shield and a high-pressure gas source, wherein a cutter head and a soil bin are arranged at the front end of the shield, and wherein: A vortex tube is installed on a partition or frame on the side of the soil bin away from the cutter disc, the cold air outlet end of the vortex tube faces the cutter disc, and the compressed air inlet of the vortex tube is connected with the high-pressure air source through an air supply channel.

2. The excavation equipment according to claim 1, characterized in that: The air supply channel comprises an air storage tank connected in series between the high pressure air source and the vortex tube.

3. The excavation equipment according to claim 2, characterized in that: A pressure regulating valve for regulating the compressed air pressure is provided on the air supply channel downstream of the air storage tank.

4. The tunneling equipment according to any one of claims 1 to 3, characterized in that: A guide pipe for blowing the cold air toward the tunnel face or the tool is installed at the cold air outlet end of the vortex tube.

5. The tunneling equipment according to any one of claims 1 to 3, characterized in that: A plurality of vortex tubes are provided and are evenly distributed along the circumference of the soil bin.

6. The tunneling equipment according to any one of claims 1 to 3, characterized in that: The vortex tube is detachably connected to the partition plate or the frame.

7. The excavation equipment according to claim 6, characterized in that: The cold air outlet end of the vortex tube is formed with an external thread, and a threaded hole for installing the vortex tube is formed on a partition or a frame on one side of the soil bin away from the cutter disc.

8. The tunneling equipment according to any one of claims 1 to 3, characterized in that: The hot air outlet end of the vortex tube is connected with a heat conducting pipe for guiding the hot air away from the shield body.

9. The tunneling equipment according to any one of claims 1 to 3, characterized in that: The cutterhead is provided with a temperature sensor for monitoring the temperature of the tunnel face or the temperature of the cutter.

10. The tunneling equipment according to any one of claims 1 to 3, characterized in that: The high pressure gas source is an air compressor.

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