A cutter device for a shield machine

Abstract

The present invention discloses a cutter device for a shield machine, which includes a shield machine base, a blade, a displacement prevention fixing plate, a waterproof outer cover, a rotating shaft, a first rotating plate, a first coil, a lifting ring, a cooling groove, a first pipeline, a second coil, a second pipeline, etc.; in the present invention, the magnetic drive wheel in the water return tank obtains power from the rotating shaft to drive the water flow, and the water flow flows into the cooling groove from the first pipeline and returns to the water return tank through the second pipeline to achieve the purpose of circulation; in the refrigeration device provided by the present invention, the compressor sucks the high-temperature and low-pressure gas from the evaporator, and after being compressed by the compressor, it becomes a high-temperature and high-pressure liquid and enters the condenser. The condenser dissipates heat to the outside, and the second motor drives the second fan to blow the hot air to the outside of the device. The high-temperature and high-pressure liquid is changed into a low-temperature and high-pressure liquid through the condenser and then becomes a low-temperature and low-pressure liquid through the expansion valve and enters the evaporator. The evaporator evaporates and exchanges with the high-temperature gas to circulate in this way.

Description

Technical Field:

[0001] The present invention relates to the technical field of shield machines, and particularly to a cutter device for a shield machine. Background Art:

[0002] A shield machine is a tunnel boring machine using the shield method. The construction method of the shield is that the boring machine constructs (lays) the "shield" (referring to the supporting segment) of the tunnel while boring, which is different from the open construction method.

[0003] The cutter device of the shield machine works by driving the cutter to rotate through a motor. Inevitably, a large amount of heat will be generated during the operation of the motor. The main reasons include bearing friction, coil resistance, core magnetic resistance, etc. This will cause the temperature of the motor to become higher and higher during operation. When the motor temperature is too high, it will cause the motor to malfunction and seriously shorten the service life of the motor. Currently, the main methods for cooling the motor are self-cooling, self-fan cooling, forced cooling, etc.; direct cooling is applicable to motors with relatively small heat generation. Self-fan cooling is the most common cooling method, but its heat dissipation capacity is still limited. Forced cooling is generally used for large motors due to the complex system and high cost. Using the above self-cooling and self-fan cooling do not meet the heat dissipation requirements, and using forced heat dissipation has too high cost requirements. Therefore, the above three are not the best heat dissipation methods. At the same time, the vibration generated during the operation of the motor is likely to cause the internal output group to shift over a long time, affecting the use. Summary of the Invention:

[0004] The purpose of the present invention is to provide a cutter device for a shield machine to solve the problems that the existing self-cooling and self-fan cooling do not meet the heat dissipation requirements, and using forced heat dissipation has too high cost requirements. Therefore, the above three are not the best heat dissipation methods. At the same time, the vibration generated during the operation of the motor is likely to cause the internal output group to shift over a long time, affecting the use.

[0005] To solve the above problems, the present invention provides a technical solution: a cutter device for a shield machine, comprising a shield machine base, a blade, a displacement prevention fixing plate, a waterproof outer cover, a rotating shaft, a first rotating plate, a first coil, a lifting ring, a cooling groove, a first pipe, a second coil, a second pipe, a second rotating plate, a permanent magnet, a water return tank, a magnetic transmission wheel, a refrigeration device and a heat conduction plate; the blade is fixedly connected to the rotating shaft; the upper surface of the shield machine base is fixedly connected with a waterproof outer cover, and displacement prevention fixing plates are provided at both left and right ends of the waterproof outer cover; lifting rings are fixedly connected to both sides of the upper end of the waterproof outer cover; a refrigeration device is provided at the right end inside the chamber of the waterproof outer cover, a heat conduction plate is provided at the left end of the refrigeration device, and the heat conduction plate is connected to the waterproof outer cover; a water return tank is provided on the left side of the heat conduction plate; cooling grooves are provided at both upper and lower ends inside the chamber of the waterproof outer cover, the right end of the cooling groove is fixedly communicated with a second pipe, and the right end of the second pipe is communicated with the water return tank; the upper end of the cooling groove is fixedly communicated with a first pipe, and the right end of the first pipe is communicated with the water return tank; a horizontally arranged rotating shaft is movably connected in the middle of the waterproof outer cover, a magnetic transmission wheel is fixedly connected to the right end of the rotating shaft, and the magnetic transmission wheel is arranged in the water return tank; a first rotating plate is fixedly connected to the shaft wall of the rotating shaft between the cooling groove and the left chamber wall of the waterproof outer cover, and first coils are provided on both upper and lower sides of the right end of the first rotating plate; a second rotating plate is fixedly connected to the shaft wall of the rotating shaft between the cooling groove and the water return tank, second coils are provided on both upper and lower sides of the left end of the second rotating plate, and permanent magnets are provided on both upper and lower sides of the right end of the second rotating plate.

[0006] Preferably, the specific structure of the refrigeration device is: comprising a device housing, a cold air passage, an evaporator, a third pipe, a first fan, a first fan rotating rod, a first motor, a compressor, a metal plate, a second fan, a second fan rotating rod, a second motor, a condenser, an expansion valve and a fourth pipe; the device housing is connected to the waterproof outer cover; a cold air passage is provided at the upper left end of the device housing, and the cold air passage is internally communicated with the heat conduction plate; an evaporator is provided in the middle of the cold air passage; a first motor is provided on the outer surface of the right side of the cold air passage, the output end of the first motor is connected to the first fan rotating rod, and first fans are fixedly connected to both upper and lower ends of the first fan rotating rod, and the first fans are aligned with the evaporator; a condenser is provided on the right side of the device housing; a metal plate is provided in the middle of the device housing, a second motor is provided at the left end of the metal plate, the output end of the second motor is connected to the second fan rotating rod, and second fans are fixedly connected to both upper and lower ends of the second fan rotating rod, and the second fans are aligned with the condenser; a compressor is provided at the upper end inside the device housing, the input end of the compressor is connected to the evaporator through a third pipe, and the output end of the compressor is connected to the condenser through a third pipe; an expansion valve is provided at the lower end inside the device housing, the input end of the expansion valve is connected to the condenser through a fourth pipe, and the output end of the expansion valve is connected to the evaporator through a fourth pipe.

[0007] Preferably, the specific structure of the anti-displacement fixing plate is as follows: it includes a bottom plate, second positioning holes, support plates, limiting plates, anti-slip pads, third positioning holes, and fourth positioning holes; several second positioning holes are provided on the bottom plate, and the bottom plate is connected to the shield machine base through the second positioning holes and bolts; a limiting plate is provided at the right end of the bottom plate, an anti-slip pad is provided on the surface of the right end of the limiting plate, several fourth positioning holes are provided on the limiting plate, and the limiting plate is connected to the waterproof outer cover through the fourth positioning holes and bolts; support plates are provided on both the left and right sides of the upper surface of the bottom plate, several third positioning holes are provided on the support plates, and the bottom plate and the limiting plate are connected through the third positioning holes and bolts on the support plates.

[0008] Preferably, the lifting ring is a high-strength cast steel lifting ring.

[0009] Preferably, several small holes are provided on the metal plate.

[0010] Advantages of the present invention:

[0011] (1) In the present invention, the magnetic drive wheel in the return water tank obtains power from the rotating shaft to drive the water flow. The water flow flows into the cooling tank through the first pipeline and returns to the return water tank through the second pipeline to achieve the purpose of circulation.

[0012] (2) In the refrigeration device provided by the present invention, the compressor sucks the high-temperature and low-pressure gas from the evaporator, compresses it through the compressor to become a high-temperature and high-pressure liquid and enters the condenser. The condenser dissipates heat externally, drives the second fan through the second motor to blow the hot air to the outside of the device, turns the high-temperature and high-pressure liquid into a low-temperature and high-pressure liquid through the condenser, passes through the expansion valve to become a low-temperature and low-pressure liquid and enters the evaporator, and evaporates through the evaporator to exchange with the high-temperature gas for circulation.

[0013] (3) The first motor provided by the present invention drives the first fan to blow cold air into the heat conduction plate for cooling, solving the problem that the existing water-cooled motors mostly have a poor heat dissipation effect due to the rising water temperature after long-term water circulation cooling.

[0014] (4) In the present invention, the anti-displacement fixing plate is used to connect the bottom plate to the shield machine base through the second positioning holes and bolts, connect the limiting plate to the waterproof outer cover through the fourth positioning holes and bolts, and connect the bottom plate and the limiting plate through the third positioning holes and bolts on the support plates to prevent the internal motor group from shifting, solving the problem that the internal output group of the water-cooled motor is displaced during long-term operation of the motor, affecting its use. Description of the drawings:

[0015] For ease of explanation, the present invention is described in detail by the following specific embodiments and drawings.

[0016] Figure 1This is a schematic structural diagram of the present invention.

[0017] Figure 2 This is a schematic structural diagram of the refrigeration device of the present invention.

[0018] Figure 3 This is a three-dimensional schematic structural diagram of the anti-displacement fixing plate of the present invention.

[0019] In the figure: 1 - shield machine base; 2 - blade; 3 - anti-displacement fixing plate; 4 - waterproof outer cover; 5 - rotating shaft; 6 - first rotating plate; 7 - first coil; 8 - lifting ring; 9 - cooling groove; 10 - first pipeline; 11 - second coil; 12 - second pipeline; 13 - second rotating plate; 14 - permanent magnet; 15 - water return tank; 16 - magnetic transmission wheel; 17 - refrigeration device; 18 - heat conduction plate; 23 - device housing; 24 - cold air channel; 25 - evaporator; 26 - third pipeline; 27 - first fan; 28 - first fan rotating rod; 29 - first motor; 30 - compressor; 31 - metal plate; 32 - second fan; 33 - second fan rotating rod; 34 - second motor; 35 - condenser; 36 - expansion valve; 37 - fourth pipeline; 38 - bottom plate; 39 - second positioning hole; 40 - support plate; 41 - limiting plate; 42 - anti-slip pad; 43 - third positioning hole; 44 - fourth positioning hole. Specific embodiments:

[0020] As Figure 1, this specific embodiment adopts the following technical solution: A cutter device for a shield machine, comprising a shield machine base 1, a blade 2, a displacement prevention fixing plate 3, a waterproof outer cover 4, a rotating shaft 5, a first rotating plate 6, a first coil 7, a lifting ring 8, a cooling groove 9, a first pipeline 10, a second coil 11, a second pipeline 12, a second rotating plate 13, a permanent magnet 14, a water return tank 15, a magnetic transmission wheel 16, a refrigeration device 17 and a heat conduction plate 18; The blade 2 is fixedly connected to the rotating shaft 5; The upper surface of the shield machine base 1 is fixedly connected with a waterproof outer cover 4, and displacement prevention fixing plates 3 are arranged at both left and right ends of the waterproof outer cover 4; Lifting rings 8 are fixedly connected to both sides of the upper end of the waterproof outer cover 4; A refrigeration device 17 is arranged at the right end inside the cavity of the waterproof outer cover 4, a heat conduction plate 18 is arranged at the left end of the refrigeration device 17, and the heat conduction plate 18 is connected to the waterproof outer cover 4; A water return tank 15 is arranged on the left side of the heat conduction plate 18; Cooling grooves 9 are arranged at both upper and lower ends inside the cavity of the waterproof outer cover 4, the right end of the cooling groove 9 is fixedly communicated with a second pipeline 12, and the right end of the second pipeline 12 is communicated with the water return tank 15; The upper end of the cooling groove 9 is fixedly communicated with a first pipeline 10, and the right end of the first pipeline 10 is communicated with the water return tank 15; A horizontally arranged rotating shaft 5 is movably connected in the middle of the waterproof outer cover 4, a magnetic transmission wheel 16 is fixedly connected to the right end of the rotating shaft 5, and the magnetic transmission wheel 16 is arranged in the water return tank 15; A first rotating plate 6 is fixedly connected to the shaft wall of the rotating shaft 5 between the cooling groove 9 and the left cavity wall of the waterproof outer cover 4, and first coils 7 are arranged on both upper and lower sides of the right end of the first rotating plate 6; A second rotating plate 13 is fixedly connected to the shaft wall of the rotating shaft 5 between the cooling groove 9 and the water return tank 15, second coils 11 are arranged on both upper and lower sides of the left end of the second rotating plate 13, and permanent magnets 14 are arranged on both upper and lower sides of the right end of the second rotating plate 13.

[0021] Such as Figure 2As shown in the figure, the specific structure of the refrigeration device 17 is as follows: It includes a device housing 23, a cold air channel 24, an evaporator 25, a third pipe 26, a first fan 27, a first fan rotating rod 28, a first motor 29, a compressor 30, a metal plate 31, a second fan 32, a second fan rotating rod 33, a second motor 34, a condenser 35, an expansion valve 36, and a fourth pipe 37; the device housing 23 is connected to the waterproof outer cover 4; at the upper left end of the device housing 23, there is a cold air channel 24, and the cold air channel 24 is internally connected to the temperature guiding plate 18; in the middle of the cold air channel 24, there is an evaporator 25; on the outer surface of the right side of the cold air channel 24, there is a first motor 29, the output end of the first motor 29 is connected to the first fan rotating rod 28, and both the upper and lower ends of the first fan rotating rod 28 are fixedly connected with a first fan 27, and the first fan 27 is aligned with the evaporator 25; on the right side of the device housing 23, there is a condenser 35; in the middle of the device housing 23, there is a metal plate 31, at the left end of the metal plate 31, there is a second motor 34, the output end of the second motor 34 is connected to the second fan rotating rod 33, and both the upper and lower ends of the second fan rotating rod 33 are fixedly connected with a second fan 32, and the second fan 32 is aligned with the condenser 35; at the upper end inside the device housing 23, there is a compressor 30, the input end of the compressor 30 is connected to the evaporator 25 through the third pipe 26, and the output end of the compressor 30 is connected to the condenser 35 through the third pipe 26; at the lower end inside the device housing 23, there is an expansion valve 36, the input end of the expansion valve 36 is connected to the condenser 35 through the fourth pipe 37, and the output end of the expansion valve 36 is connected to the evaporator 25 through the fourth pipe 37.

[0022] As Figure 3 As shown in the figure, the specific structure of the anti-displacement fixing plate 3 is as follows: It includes a bottom plate 38, a second positioning hole 39, a support plate 40, a limiting plate 41, an anti-slip pad 42, a third positioning hole 43, and a fourth positioning hole 44; several second positioning holes 39 are provided on the bottom plate 38, and the bottom plate 38 is connected to the shield machine base 1 through the second positioning holes 39 and bolts; at the right end of the bottom plate 38, there is a limiting plate 41, an anti-slip pad 42 is provided on the right end surface of the limiting plate 41, several fourth positioning holes 44 are provided on the limiting plate 41, and the limiting plate 41 is connected to the waterproof outer cover 4 through the fourth positioning holes 44 and bolts; support plates 40 are provided on both the left and right sides of the upper surface of the bottom plate 38, several third positioning holes 43 are provided on the support plates 40, and the bottom plate 38 and the limiting plate 41 are connected through the third positioning holes 43 on the support plates 40 and bolts.

[0023] Among them, the lifting ring 8 is a high-strength cast steel lifting ring; several small holes are provided on the metal plate 31.

[0024] The usage state of the present invention is as follows: Power is obtained from the rotating shaft 5 through the magnetic drive wheel 16 in the return water tank 15 to drive the water flow. The water flow flows into the cooling tank 9 from the first pipe 10 and returns to the return water tank 15 through the second pipe 12 to achieve the purpose of circulation. In the provided refrigeration device 17, the compressor 30 sucks the high-temperature and low-pressure gas from the evaporator 25, compresses it through the compressor 30 to become a high-temperature and high-pressure liquid and enters the condenser 35. The condenser 35 dissipates heat externally. The second motor 34 drives the second fan 32 to blow the hot air to the outside of the device. The high-temperature and high-pressure liquid is changed into a low-temperature and high-pressure liquid through the condenser 35, and then becomes a low-temperature and low-pressure liquid after passing through the expansion valve 36 and enters the evaporator 25. It evaporates through the evaporator 25 and exchanges with the high-temperature gas for such a cycle. The provided first motor 29 drives the first fan 27 to blow the cold air into the heat conduction plate 18 for cooling. The anti-displacement fixing plate 3 is provided. The bottom plate 38 is connected to the shield machine base 1 through the second positioning hole 39 and bolts. The limiting plate 41 is connected to the waterproof outer cover 4 through the fourth positioning hole 44 and bolts. The bottom plate 38 and the limiting plate 41 are connected through the third positioning hole 43 and bolts on the support plate 40 to prevent the internal motor group from shifting.

[0025] In the description of the invention, it should be understood that the orientation or positional relationship indicated by terms such as "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the invention.

[0026] In the invention, unless otherwise clearly specified and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the invention can be understood according to specific situations.

[0027] The above shows and describes the basic principles, main features and advantages of the invention. Those skilled in the art of this industry should understand that the invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the invention. Without departing from the spirit and scope of the invention, the invention will have various changes and improvements, and these changes and improvements all fall within the scope of the invention claimed. The scope of the invention claimed is defined by the appended claims and their equivalents.

[0028] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the power supply are common knowledge in the art, and the present invention is mainly used to protect mechanical devices. Therefore, the control method and wiring layout of the present invention will not be explained in detail.

Claims

1. A cutter device for a shield machine, characterized in that: it includes a shield machine base (1), a blade (2), a displacement prevention fixing plate (3), a waterproof outer cover (4), a rotating shaft (5), a first rotating plate (6), a first coil (7), a lifting ring (8), a cooling tank (9), a first pipe (10), a second coil (11), a second pipe (12), a second rotating plate (13), a permanent magnet (14), a water return tank (15), a magnetic transmission wheel (16), a refrigeration device (17) and a temperature guiding plate (18); the blade (2) is fixedly connected to the rotating shaft (5); the upper surface of the shield machine base (1) is fixedly connected with a waterproof outer cover (4), and displacement prevention fixing plates (3) are provided at both the left and right ends of the waterproof outer cover (4); lifting rings (8) are fixedly connected to both sides of the upper end of the waterproof outer cover (4); a refrigeration device (17) is provided at the right end inside the chamber of the waterproof outer cover (4), a temperature guiding plate (18) is provided at the left end of the refrigeration device (17), and the temperature guiding plate (18) is connected to the waterproof outer cover (4); a water return tank (15) is provided on the left side of the temperature guiding plate (18); cooling tanks (9) are provided at both the upper and lower ends inside the chamber of the waterproof outer cover (4), the right end of the cooling tank (9) is fixedly communicated with a second pipe (12), and the right end of the second pipe (12) is communicated with the water return tank (15); the upper end of the cooling tank (9) is fixedly communicated with a first pipe (10), and the right end of the first pipe (10) is communicated with the water return tank (15); a horizontally arranged rotating shaft (5) is movably connected in the middle of the waterproof outer cover (4), a magnetic transmission wheel (16) is fixedly connected to the right end of the rotating shaft (5), and the magnetic transmission wheel (16) is arranged in the water return tank (15); a first rotating plate (6) is fixedly connected to the shaft wall of the rotating shaft (5) between the cooling tank (9) and the left chamber wall of the waterproof outer cover (4), and first coils (7) are provided on both the upper and lower sides of the right end of the first rotating plate (6); a second rotating plate (13) is fixedly connected to the shaft wall of the rotating shaft (5) between the cooling tank (9) and the water return tank (15), second coils (11) are provided on both the upper and lower sides of the left end of the second rotating plate (13), and permanent magnets (14) are provided on both the upper and lower sides of the right end of the second rotating plate (13); the specific structure of the refrigeration device (17) is: it includes a device housing (23), a cold air channel (24), an evaporator (25), a third pipe (26), a first fan (27), a first fan rotating rod (28), a first motor (29), a compressor (30), a metal plate (31), a second fan (32), a second fan rotating rod (33), a second motor (34), a condenser (35), an expansion valve (36) and a fourth pipe (37); the device housing (23) is connected to the waterproof outer cover (4); a cold air channel (24) is provided at the upper left end of the device housing (23), and the cold air channel (24) is internally communicated with the temperature guiding plate (18); an evaporator (25) is provided in the middle of the cold air channel (24); On the outer surface of the right side of the cold air passage (24), a first motor (29) is provided. The output end of the first motor (29) is connected to a first fan rotating rod (28). Both the upper and lower ends of the first fan rotating rod (28) are fixedly connected with a first fan (27), and the first fan (27) is aligned with the evaporator (25). On the right side of the device housing (23), a condenser (35) is provided. In the middle of the device housing (23), a metal plate (31) is provided. On the left end of the metal plate (31), a second motor (34) is provided. The output end of the second motor (34) is connected to a second fan rotating rod (33). Both the upper and lower ends of the second fan rotating rod (33) are fixedly connected with a second fan (32), and the second fan (32) is aligned with the condenser (35). At the upper end inside the device housing (23), a compressor (30) is provided. The input end of the compressor (30) is communicated with the evaporator (25) through a third pipeline (26), and the output end of the compressor (30) is communicated with the condenser (35) through a third pipeline (26). At the lower end inside the device housing (23), an expansion valve (36) is provided. The input end of the expansion valve (36) is communicated with the condenser (35) through a fourth pipeline (37), and the output end of the expansion valve (36) is communicated with the evaporator (25) through a fourth pipeline (37). The specific structure of the anti-displacement fixing plate (3) is as follows: It includes a bottom plate (38), a second positioning hole (39), a support plate (40), a limiting plate (41), an anti-slip pad (42), a third positioning hole (43), and a fourth positioning hole (44). On the bottom plate (38), several second positioning holes (39) are provided. The bottom plate (38) is connected to the shield machine base (1) through the second positioning holes (39) and bolts. On the right end of the bottom plate (38), a limiting plate (41) is provided. On the right end surface of the limiting plate (41), an anti-slip pad (42) is provided. On the limiting plate (41), several fourth positioning holes (44) are provided. The limiting plate (41) is connected to the waterproof outer cover (4) through the fourth positioning holes (44) and bolts. On the upper surface of the bottom plate (38), support plates (40) are provided on both the left and right sides. On the support plates (40), several third positioning holes (43) are provided. The bottom plate (38) and the limiting plate (41) are connected through the third positioning holes (43) on the support plates (40) and bolts.

2. A shield machine cutter device according to claim 1, characterized in that: The lifting ring (8) is a high-strength cast steel lifting ring.

3. A shield machine cutter device according to claim 1, characterized in that: Several small holes are provided on the metal plate (31).

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