Cantilever type heading machine

Abstract

The utility model discloses a cantilever type heading machine, which belongs to the technical field of heading machine equipment and comprises an oil tank, an inner cavity of the oil tank is fixedly connected with a supporting plate, the top of the supporting plate is fixedly connected with a cooling tank, an inner cavity of the cooling tank is sleeved with an oil storage bag, and one side of the oil storage bag is fixedly connected with an oil inlet pipe. The other side of the oil storage bag is fixedly connected with an oil outlet pipe, the other end of the oil inlet pipe and the other end of the oil outlet pipe penetrate through the side wall of the oil tank and extend to the outer side of the oil tank, one side of the oil tank is fixedly connected with a water tank, the top of the water tank is fixedly connected with a water pump, and the top of the water pump is fixedly connected with a water inlet pipe. According to the device, the oil storage bag can be cooled through water circulation and air cooling, the temperature in the hydraulic oil tank is prevented from being too high, a hydraulic system is prevented from breaking down, and the problems that when the environment temperature is low, the hydraulic oil tank is cooled, the oil temperature in the hydraulic oil tank is too high, and hydraulic oil goes bad are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel boring machine equipment, in particular to a cantilever tunnel boring machine. Background Art

[0002] The cantilever type roadheader is a combined unit that can realize cutting, loading and transporting, self-propelled and spray dust removal, and can be used for tunnels of any cross-sectional shape. It is mainly composed of a cutting mechanism, a loading mechanism, a transport mechanism, a traveling mechanism, a frame and a rotary table, a hydraulic system, etc.

[0003] During the use of existing cantilever tunneling machines, the hydraulic oil in the oil tank is circulated and is in a high-pressure state for a long time, causing the temperature of the hydraulic oil to rise rapidly. If the heat cannot be dissipated in time, it may cause oil quality changes and even cause hydraulic system failures.

[0004] To solve the above problems, a Chinese patent now discloses a self-cooling oil tank for a tunnel boring machine (Announcement No.: CN210033987U), which sprays water mist through an atomizing nozzle and blows the water mist through a fan so that the water mist falls on an oil storage bag to cool the oil storage bag. The water mist floating in the inner cavity of the oil tank condenses into water droplets under the action of a first condensing block, a second condensing block and a condensing rod and falls on the oil storage bag to cool it. After the water droplets accumulated on the oil storage bag and the dripping water droplets drip from the oil storage bag to a water collecting tank, they are sprayed out from the atomizing nozzle through a water pump to complete the water circulation and realize the cooling treatment of the hydraulic oil tank.

[0005] In view of the above problems, existing patents have provided solutions. However, when the temperature is too low, the water retained in the sump will freeze and block the valves and filters in the oil tank. Not only will it be impossible to dissipate the heat of the hydraulic oil tank in time, but it will also cause damage to the equipment in the tank.

[0006] In view of this, in order to address the above-mentioned deficiencies, the utility model improves and optimizes the cantilevered tunnel boring machine in the prior art and develops a cantilevered tunnel boring machine. Summary of the invention

[0007] The utility model aims to provide a cantilever type tunnel boring machine, which can dissipate heat from a hydraulic oil tank when the ambient temperature is low, thereby avoiding the problem of excessive oil temperature in the hydraulic oil tank causing deterioration of the hydraulic oil.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cantilever tunneling machine comprises a fuel tank, the inner cavity of the fuel tank is fixedly connected to a support plate, the top of the support plate is fixedly connected to a cooling box, the inner cavity of the cooling box is sleeved with an oil storage bag, one side of the oil storage bag is fixedly connected to an oil inlet pipe, the other side of the oil storage bag is fixedly connected to an oil outlet pipe, the other ends of the oil inlet pipe and the oil outlet pipe both penetrate the side wall of the fuel tank and extend to the outside of the fuel tank, one side of the fuel tank is fixedly connected to a water tank, the top of the water tank is fixedly connected to a water inlet pipe, the top of the water pump is fixedly connected to a water inlet pipe, the other side of the water inlet pipe penetrates the side wall of the fuel tank and is fixedly connected to a water inlet on one side of the cooling box, a water outlet is provided at the bottom of the cooling box, the bottom of the water outlet is fixedly connected to a drain pipe, the other side of the drain pipe penetrates the side wall of the fuel tank and is fixedly connected to one side of the water tank.

[0009] Preferably, an impeller is provided at the bottom of the inner cavity of the cooling box, and the impeller is fixedly connected to the outer surface of the rotating shaft. The rotating shaft is rotatably connected to the inner wall of the cooling box, the bottom of the rotating shaft passes through the cooling box and extends to the outside of the cooling box, and a fan is fixedly connected to the bottom outer surface of the rotating shaft.

[0010] Preferably, a plurality of heat-conducting pipes are equidistantly and fixedly connected to the outer surface of the cooling box, the heat-conducting pipes are made of copper pipes, and the outer shell of the cooling box is made of a material with good thermal conductivity.

[0011] Preferably, a control switch is fixedly connected to the top of the support plate, a bimetallic strip is fixedly connected to the inner cavity of the control switch, a conductive contact is fixedly connected to one side of the bimetallic strip, and a conductive contact is also fixedly connected to the side wall of the control switch.

[0012] Preferably, a vent is provided at the top of the oil tank, an air inlet is provided at the top of the oil tank, and filters are fixedly connected to the inner cavities of the air inlet and the vent.

[0013] Preferably, the metal sheet with a high thermal expansion coefficient of the bimetallic sheet is far away from the conductive contact sheet.

[0014] Preferably, a sealing ring is fixedly connected to the outer surface of the rotating shaft, the sealing ring is located at the connection between the rotating shaft and the cooling box, and the fan blows air toward the top.

[0015] Preferably, a plurality of heat-conducting blocks are equidistantly and fixedly connected to the circumferential outer surface of the oil storage bag.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The present application sets a water pump. After the high-temperature hydraulic oil in the oil inlet pipe enters the oil storage bag, when the temperature of the oil storage bag rises, the water pump drives the water flow to flow in the cooling box, so that the heat in the oil storage bag is absorbed by the water flow flowing in the cooling box, thereby reducing the temperature of the hydraulic oil in the hydraulic oil circuit. The water flow drives the impeller to rotate, and the impeller drives the rotating shaft and the fan to rotate synchronously. The fan rotates to generate wind force to further dissipate the heat of the oil storage bag at the top, thereby improving the heat dissipation effect.

[0018] 2. The present application sets a fan, which rotates to blow the hot air in the inner cavity of the oil tank, so that the hot air is discharged from the vent. At the same time, the water flow in the cooling box gradually heats up, and the heat is transferred from the outer shell of the cooling box to the heat pipe. The heat pipe exchanges heat with the external cold air to cool the water flow in the cooling box, which can improve the cooling effect of the cooling box, ensure that the oil storage bag can dissipate heat quickly, and prevent the hydraulic oil from deteriorating. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is the overall structural view of the utility model;

[0021] Figure 2 It is a top view of the overall structure of the utility model;

[0022] Figure 3 This is a cross-sectional view of the cooling pipe of the utility model;

[0023] Figure 4 It is a partial structural view of the utility model;

[0024] Figure 5 It is a cross-sectional view of the control switch of the utility model.

[0025] Description of reference numerals:

[0026] 1. Oil tank; 2. Support plate; 3. Oil storage bag; 4. Oil inlet pipe; 5. Oil outlet pipe; 6. Cooling box; 61. Water inlet; 62. Water outlet; 7. Water tank; 71. Water inlet pipe; 72. Drain pipe; 8. Control switch; 81. Bimetallic strip; 82. Conductive contact; 9. Fan; 10. Air inlet; 11. Water pump; 12. Rotating shaft; 13. Impeller; 14. Ventilation port; 15. Heat pipe; 16. Heat conductive block. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figures 1 to 5 , the utility model provides a technical solution:

[0029] A cantilevered tunnel boring machine comprises an oil tank 1, the inner cavity of the oil tank 1 is fixedly connected to a support plate 2, the top of the support plate 2 is fixedly connected to a cooling box 6, the inner cavity of the cooling box 6 is sleeved with an oil storage bag 3, a plurality of heat conducting blocks 16 are fixedly connected to the circumferential outer surface of the oil storage bag 3 at equal intervals, an oil inlet pipe 4 is fixedly connected to one side of the oil storage bag 3, an oil outlet pipe 5 is fixedly connected to the other side of the oil storage bag 3, the other ends of the oil inlet pipe 4 and the oil outlet pipe 5 both penetrate the side wall of the oil tank 1 and extend to the outside of the oil tank 1, a water tank 7 is fixedly connected to one side of the oil tank 1, a water pump 11 is fixedly connected to the top of the water tank 7, a water inlet pipe 71 is fixedly connected to the top of the water pump 11, the other side of the water inlet pipe 71 penetrates the side wall of the oil tank 1 and is fixedly connected to the top of the water pump 11. A water inlet 61 is fixedly connected to one side of the cooling box 6, a water outlet 62 is opened at the bottom of the cooling box 6, a drain pipe 72 is fixedly connected to the bottom of the water outlet 62, the other side of the drain pipe 72 passes through the side wall of the oil tank 1 and is fixedly connected to one side of the water tank 7, an impeller 13 is provided at the bottom of the inner cavity of the cooling box 6, the impeller 13 is fixedly connected to the outer surface of the rotating shaft 12, the rotating shaft 12 is rotatably connected to the inner wall of the cooling box 6, a sealing ring is fixedly connected to the outer surface of the rotating shaft 12, the sealing ring is located at the connection between the rotating shaft 12 and the cooling box 6, the bottom of the rotating shaft 12 passes through the cooling box 6 and extends to the outside of the cooling box 6, the bottom outer surface of the rotating shaft 12 is fixedly connected to the fan 9, and the fan 9 blows air toward the top.

[0030] By adopting the above technical scheme, when the tunnel boring machine is in use, the hydraulic oil in the oil tank 1 is circulated, and the high-temperature hydraulic oil enters the oil storage bag 3 through the oil inlet pipe 4, so that the temperature in the oil storage bag 3 gradually increases. The operator turns on the water pump 11, so that the water in the water tank 7 enters the water inlet pipe 71 through the water pump 11, and the water in the water inlet pipe 71 flows into the cooling box 6 from the water inlet port 61. The water flows in the cooling box 6, contacts the outer surface of the oil storage bag 3 and the heat conductive block 16, and is finally discharged from the water outlet 62, enters the drain pipe 72, and returns to the water tank 7 from the drain pipe 72, forming a water cycle. When the water flows in the cooling box 6, the high temperature in the oil storage bag 3 is transferred to the heat conductive block 16, and the water cools the outer surface of the oil storage bag 3 and the heat conductive block 16, so that the hydraulic oil in the oil storage bag 3 The temperature is reduced to avoid the influence of high temperature on the hydraulic system. At the same time, water flows in the cooling box 6, driving the impeller 13 in the cooling box 6 to rotate. The impeller 13 drives the rotating shaft 12 to rotate synchronously. The impeller 13 makes the water in the cooling box 6 flow evenly to avoid local high temperature. The sealing ring on the outer surface of the rotating shaft 12 can prevent the water in the cooling box 6 from dripping into the oil tank 1 when the rotating shaft 12 rotates, causing damage to the components in the oil tank 1. The rotating shaft 12 drives the fan 9 at the bottom to rotate. The rotation of the fan 9 generates wind force, which blows upward to further improve the heat dissipation effect of the oil storage bag 3. Through water cooling and air cooling, heat dissipation can be prevented from causing high temperature to cause the hydraulic oil quality to change, causing the hydraulic system to malfunction. The cooled hydraulic oil is discharged from the oil outlet pipe 5 and enters the hydraulic system, so that the tunneling machine can cut and move forward.

[0031] Specifically, Figures 1 to 3 As shown, a vent 14 is provided on the top of the fuel tank 1, an air inlet 10 is provided on the top of the fuel tank 1, and the inner cavities of the air inlet 10 and the vent 14 are fixedly connected with filter screens, a plurality of heat pipes 15 are fixedly connected with equal intervals on the outer surface of the cooling box 6, the heat pipes 15 are made of copper tubes, and the outer shell of the cooling box 6 is made of a material with good thermal conductivity, a vent 14 is provided on the top of the fuel tank 1, an air inlet 10 is provided on the top of the fuel tank 1, and the inner cavities of the air inlet 10 and the vent 14 are fixedly connected with filter screens.

[0032] By adopting the above technical solution, the fan 9 rotates to generate wind and blows air upward, so that the hot air is discharged from the vent 14 on the top. The filter screens in the air inlet 10 and the vent 14 prevent dust from entering the oil storage bag 3 and damaging the hydraulic system. At the same time, the water flow in the cooling box 6 gradually heats up, and the heat is transferred from the outer shell of the cooling box 6 to the heat pipe 15. The heat pipe 15 exchanges heat with the outside air to cool the water flow in the cooling box 6, which can improve the cooling effect of the cooling box 6 and ensure that the oil storage bag 3 can quickly dissipate heat to prevent the hydraulic oil from deteriorating.

[0033] Specifically, Figure 5As shown, the top of the support plate 2 is fixedly connected to a control switch 8, the inner cavity of the control switch 8 is fixedly connected to a bimetallic strip 81, one side of the bimetallic strip 81 is fixedly connected to a conductive contact piece 82, and the side wall of the control switch 8 is also fixedly connected to a conductive contact piece 82. The metal piece with a high thermal expansion coefficient of the bimetallic strip 81 is far away from the conductive contact piece 82.

[0034] By adopting the above technical solution, a control switch 8 is set on the top of the support plate 2. When the temperature in the oil tank 1 rises, the metal sheet with a high thermal expansion coefficient of the bimetallic strip 81 bends due to the heat, and the bimetallic strip 81 drives the conductive contact piece 82 to bend and move, and connects with the conductive contact piece 82 fixed in the inner cavity of the control switch 8, so that the water pump 11 is turned on. Through the control of the control switch 8, when the temperature rises, the water pump 11 is automatically turned on to cool down the oil tank 1, simplifying the operation and saving manpower.

[0035] Working principle: When the tunnel boring machine is in use, the hydraulic oil in the oil tank 1 is circulated, and the high-temperature hydraulic oil enters the oil storage bag 3 through the oil inlet pipe 4, so that the temperature in the oil storage bag 3 gradually increases. The operator turns on the water pump 11, so that the water in the water tank 7 enters the water inlet pipe 71 through the water pump 11, and the water in the water inlet pipe 71 flows into the cooling box 6 from the water inlet 61. The water flows in the cooling box 6, contacts the outer surface of the oil storage bag 3 and the heat conductive block 16, and is finally discharged from the water outlet 62, enters the drain pipe 72, and returns to the water tank 7 from the drain pipe 72, forming a water cycle. When the water flows in the cooling box 6, the high temperature in the oil storage bag 3 is transferred to the heat conductive block 16, and the water cools the outer surface of the oil storage bag 3 and the heat conductive block 16, so that the temperature of the hydraulic oil in the oil storage bag 3 is reduced. At the same time, the water flows in the cooling box 6, driving the impeller 13 in the cooling box 6 to rotate, and the impeller 13 drives the rotating shaft 1 2 rotate synchronously, the impeller 13 makes the water flow in the cooling box 6 flow evenly to avoid local high temperature, the sealing ring on the outer surface of the rotating shaft 12 can prevent the water flow in the cooling box 6 from dripping into the oil tank 1 when the rotating shaft 12 rotates, causing damage to the components in the oil tank 1, the rotating shaft 12 drives the fan 9 at the bottom to rotate, the fan 9 rotates to generate wind force, blows upward, the fan 9 rotates to generate wind force, blows upward, and the hot air is discharged from the vent 14 at the top, and at the same time the water flow in the cooling box 6 gradually heats up, and the heat is transferred from the outer shell of the cooling box 6 to the heat pipe 15, the heat pipe 15 exchanges heat with the outside air, cools the water flow in the cooling box 6, and further improves the heat dissipation effect of the oil storage bag 3, and heats away through water cooling and air cooling to avoid high temperature causing the hydraulic oil to change in quality, causing the hydraulic system to fail, and the cooled hydraulic oil is discharged from the oil outlet pipe 5 and enters the hydraulic system, so that the tunneling machine can cut and move forward.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A cantilever type roadheader, comprising a fuel tank (1), characterized in that: The inner cavity of the oil tank (1) is fixedly connected to a support plate (2), the top of the support plate (2) is fixedly connected to a cooling box (6), the inner cavity of the cooling box (6) is sleeved with an oil storage bag (3), one side of the oil storage bag (3) is fixedly connected to an oil inlet pipe (4), the other side of the oil storage bag (3) is fixedly connected to an oil outlet pipe (5), the other ends of the oil inlet pipe (4) and the oil outlet pipe (5) both penetrate the side wall of the oil tank (1) and extend to the outside of the oil tank (1), one side of the oil tank (1) is fixedly connected to a water tank (7), The top of the water tank (7) is fixedly connected to a water pump (11), the top of the water pump (11) is fixedly connected to a water inlet pipe (71), the other side of the water inlet pipe (71) passes through the side wall of the oil tank (1) and is fixedly connected to a water inlet (61) on one side of the cooling box (6), the bottom of the cooling box (6) is provided with a water outlet (62), the bottom of the water outlet (62) is fixedly connected to a drain pipe (72), the other side of the drain pipe (72) passes through the side wall of the oil tank (1) and is fixedly connected to one side of the water tank (7).

2. A cantilever type tunnel boring machine according to claim 1, characterized in that: An impeller (13) is provided at the bottom of the inner cavity of the cooling box (6), and the impeller (13) is fixedly connected to the outer surface of the rotating shaft (12). The rotating shaft (12) is rotatably connected to the inner wall of the cooling box (6). The bottom of the rotating shaft (12) passes through the cooling box (6) and extends to the outside of the cooling box (6). The outer surface of the bottom of the rotating shaft (12) is fixedly connected to a fan (9).

3. The cantilever type tunnel boring machine according to claim 1, characterized in that: The outer surface of the cooling box (6) is equidistantly and fixedly connected with a plurality of heat-conducting pipes (15), the heat-conducting pipes (15) are made of copper pipes, and the outer shell of the cooling box (6) is made of a material with good thermal conductivity.

4. The cantilever type tunnel boring machine according to claim 1, characterized in that: The top of the support plate (2) is fixedly connected to a control switch (8), the inner cavity of the control switch (8) is fixedly connected to a bimetallic strip (81), one side of the bimetallic strip (81) is fixedly connected to a conductive contact piece (82), and the side wall of the control switch (8) is also fixedly connected to a conductive contact piece (82).

5. The cantilever type tunnel boring machine according to claim 2, characterized in that: The top of the oil tank (1) is provided with a vent (14), the top of the oil tank (1) is provided with an air inlet (10), and the inner cavities of the air inlet (10) and the vent (14) are both fixedly connected with filter screens.

6. The cantilever type tunnel boring machine according to claim 4, characterized in that: The metal sheet with a high thermal expansion coefficient of the bimetallic sheet (81) is far away from the conductive contact sheet (82).

7. The cantilever type tunnel boring machine according to claim 2, characterized in that: A sealing ring is fixedly connected to the outer surface of the rotating shaft (12), and the sealing ring is located at the connection between the rotating shaft (12) and the cooling box (6). The fan (9) blows air toward the top.

8. The cantilever type tunnel boring machine according to claim 1, characterized in that: A plurality of heat-conducting blocks (16) are fixedly connected at equal intervals to the circumferential outer surface of the oil storage bag (3).

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