Anti-magnetic interference engineering machinery

Abstract

The utility model relates to the technical field of engineering machinery, and particularly discloses an anti-magnetic-interference engineering machine which comprises a frame, a hood, a chassis protection plate, a complete machine protection aluminum foil layer and a first anti-magnetic-interference device, the hood is arranged above the frame, the chassis protection plate is arranged below the frame, and the complete machine protection aluminum foil layer is arranged below the frame. Whole machine protection aluminum foil layers are laid on the wall face, opposite to the machine cover, of the chassis protection plate and the inner wall of the machine cover, a magnetic isolation cavity is defined by the machine cover, the vehicle frame and the chassis protection plate, and the first magnetic interference prevention device is arranged in the magnetic isolation cavity. According to the anti-magnetic-interference engineering machine, the whole machine protection aluminum foil layers are laid on the wall face, opposite to the machine cover, of the chassis protection plate and the inner wall of the machine cover, magnetic interference of a high-intensity magnetic field to the first anti-magnetic-interference equipment in the magnetic isolation cavity can be improved, and the first anti-magnetic-interference equipment in the magnetic isolation cavity can work normally.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to magnetic interference-proof engineering machinery. Background Art

[0002] Engineering machinery has the advantages of fast operation speed, high efficiency, good mobility and easy operation, etc. Therefore, it is widely used in sand and gravel plants, mixing plants, railways, highways, mines, metallurgy and other fields.

[0003] At present, all engines use electronic control systems, which enable the engine to work in the best state and greatly reduce the emission of harmful components. The electronic control system mainly controls fuel injection and exhaust after-treatment control. The electronic control system is composed of various sensors, ECU (computer) and actuators, so that the diesel engine can sense the real-time load condition of the whole machine, control the fuel injection to work in the best state, and control the exhaust emission through various sensors to meet the national four emission requirements. The exhaust emission is transmitted to the ECU through the data of each sensor on the urea tank, and the urea aqueous solution is sprayed to the after-treatment device to capture, oxidize and reduce the gas pollutants (CO, HC, NOx) and particulate emissions (PM) generated by the incomplete combustion of the engine through the after-treatment device. The emission indicators of the exhaust gas meet the emission requirements. The indicators for controlling emissions are all monitored by sensors. This electronically controlled fuel loader can adapt to most working conditions.

[0004] However, when construction machinery is in a magnetic field environment, such as in a strong magnetic field environment such as electrolytic aluminum (magnetic field strength can reach 2000GS and above), due to the influence of the strong magnetic field generated by the electrolytic equipment, the ECU and post-processor on the engine and the sensors in the urea tank will be disturbed by the strong magnetic field, affecting the accuracy of ECU control, causing the electronic control system to be in a disordered state when the engine is working, and thus making the entire machine unable to work normally under this working condition, and even causing safety failures due to control errors. Utility Model Content

[0005] The purpose of the utility model is to provide anti-magnetic interference engineering machinery to solve the problem in the related technology that due to the influence of strong magnetic fields, the ECU and post-processor on the engine and the sensors in the urea tank will be interfered by the strong magnetic field, affecting the accuracy of ECU control, thereby making the whole machine unable to work normally in this environment, and even causing safety failures due to control errors.

[0006] The utility model provides anti-magnetic interference engineering machinery, which includes a frame, a hood, a chassis protection plate, a whole-machine protection aluminum foil layer and a first anti-magnetic interference device, the hood is arranged above the frame, the chassis protection plate is arranged below the frame, the wall surface of the chassis protection plate opposite to the hood and the inner wall of the hood are paved with the whole-machine protection aluminum foil layer, the hood, the frame and the chassis protection plate are surrounded by a magnetic isolation cavity, and the first anti-magnetic interference device is arranged in the magnetic isolation cavity.

[0007] As a preferred technical solution for anti-magnetic interference engineering machinery, the whole machine protective aluminum foil layer on the machine cover is provided with at least two layers;

[0008] And / or, the whole machine protective aluminum foil layer on the chassis protection plate is provided with at least two layers.

[0009] As a preferred technical solution for anti-magnetic interference engineering machinery, the area of ​​the frame that constitutes the magnetic isolation cavity is provided with the whole-machine protective aluminum foil layer.

[0010] As a preferred technical solution for anti-magnetic interference engineering machinery, the first anti-magnetic interference device includes an ECU;

[0011] The anti-magnetic interference engineering machinery also includes a local anti-magnetic device, which is arranged in the magnetic isolation cavity. The local anti-magnetic device includes a first shielding box and a first aluminum foil layer. The ECU is arranged in the first shielding box, and the first aluminum foil layer is laid on the inner wall of the first shielding box.

[0012] As a preferred technical solution for anti-magnetic interference engineering machinery, the first aluminum foil layer is provided with at least two layers.

[0013] As a preferred technical solution for anti-magnetic interference engineering machinery, the first anti-magnetic interference equipment also includes a urea tank;

[0014] The anti-magnetic interference engineering machinery also includes a local anti-magnetic device, which is arranged in the magnetic isolation cavity. The local anti-magnetic device includes a second shielding box and a second aluminum foil layer. The urea tank is arranged in the second shielding box, and the second aluminum foil layer is laid on the inner wall of the second shielding box.

[0015] As a preferred technical solution for anti-magnetic interference engineering machinery, the second aluminum foil layer is provided with at least two layers.

[0016] As a preferred technical solution for anti-magnetic interference engineering machinery, the first anti-magnetic interference device also includes a control harness;

[0017] The anti-magnetic interference engineering machinery also includes a local anti-magnetic device, which is arranged in the magnetic isolation cavity. The local anti-magnetic device includes a third aluminum foil layer, and the third aluminum foil layer is coated on the control harness.

[0018] As a preferred technical solution for the anti-magnetic interference engineering machinery, the anti-magnetic interference engineering machinery also includes a second anti-magnetic interference device and a magnetically isolated cab arranged on the frame, and the second anti-magnetic interference device is arranged in the magnetically isolated cab.

[0019] As an optimal technical solution for anti-magnetic interference engineering machinery, the magnetic-isolating cab includes a main body and magnetic-isolating glass. The main body is provided with a cockpit and a window frame connected to the cockpit. The magnetic-isolating glass closes the window frame to form a negative pressure closed space in the cockpit.

[0020] The beneficial effects of the utility model are:

[0021] The utility model provides an anti-magnetic interference engineering machinery, which includes a frame, a hood, a chassis protection plate, a whole machine protection aluminum foil layer and a first anti-magnetic interference device. The hood is arranged above the frame, the chassis protection plate is arranged below the frame, the wall surface of the chassis protection plate opposite to the hood and the inner wall of the hood are paved with a whole machine protection aluminum foil layer, the hood, the frame and the chassis protection plate are surrounded to form a magnetic isolation cavity, and the first anti-magnetic interference device is arranged in the magnetic isolation cavity. The anti-magnetic interference engineering machinery is paved with a whole machine protection aluminum foil layer on the wall surface of the chassis protection plate opposite to the hood and the inner wall of the hood, and the whole machine protection aluminum foil layer has low resistivity and good electrical conductivity. Aluminum foil absorbs and reflects magnetic lines of force. When the magnetic lines of force encounter the aluminum foil, circulating currents will be generated on the surface of the aluminum foil, and these circulating currents will generate reverse magnetic fields, thereby offsetting the original magnetic field, thereby improving the magnetic interference of the strong magnetic field on the first anti-magnetic interference device in the magnetic isolation cavity, so that the first anti-magnetic interference device in the magnetic isolation cavity can work normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The structure of the anti-magnetic interference engineering machinery in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0023] Figure 2 The structure of the anti-magnetic interference engineering machinery in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0024] Figure 3 It is a structural schematic diagram of the first anti-magnetic interference device and the local anti-magnetic device of the anti-magnetic interference engineering machinery in the embodiment of the utility model.

[0025] In the figure:

[0026] 1. Frame; 2. Hood; 3. Chassis protection plate;

[0027] 41. Urea tank;

[0028] 51. first shielding box; 52. second shielding box; 53. third aluminum foil layer;

[0029] 6. Magnetic-proof cab; 61. Main body; 62. Magnetic-proof glass. DETAILED DESCRIPTION

[0030] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] like Figures 1 to 3 As shown, this embodiment provides an anti-magnetic interference engineering machinery, which includes a frame 1, a hood 2, a chassis protection plate 3, a whole machine protection aluminum foil layer and a first anti-magnetic interference device. The hood 2 is arranged above the frame 1, and the chassis protection plate 3 is arranged below the frame 1. The wall surface of the chassis protection plate 3 opposite to the hood 2 and the inner wall of the hood 2 are paved with a whole machine protection aluminum foil layer. The hood 2, the frame 1 and the chassis protection plate 3 are surrounded by a magnetic isolation cavity, and the first anti-magnetic interference device is arranged in the magnetic isolation cavity. The anti-magnetic interference engineering machinery is paved with a whole machine protection aluminum foil layer on the wall surface of the chassis protection plate 3 opposite to the hood 2 and the inner wall of the hood 2. The whole machine protection aluminum foil layer has low resistivity and good electrical conductivity. Aluminum foil absorbs and reflects magnetic lines of force. When the magnetic lines of force encounter the aluminum foil, a circulation will be generated on the surface of the aluminum foil. These circulations will generate a reverse magnetic field, thereby offsetting the original magnetic field, thereby improving the magnetic interference of the strong magnetic field on the first anti-magnetic interference device in the magnetic isolation cavity, so that the first anti-magnetic interference device in the magnetic isolation cavity can work normally. Specifically, the first anti-magnetic interference device can be an ECU, a post-processor, a urea tube, a control harness, etc.

[0035] Optionally, the whole machine protection aluminum foil layer on the hood 2 is provided with at least two layers; the whole machine protection aluminum foil layer on the chassis protection plate 3 is provided with at least two layers. In this embodiment, the above arrangement can further enhance the demagnetization effect of the whole machine protection aluminum foil layer. The number of layers of the whole machine protection aluminum foil layer is determined by the magnetic field strength. Specifically, the whole machine protection aluminum foil layer on the hood 2 can be two layers, three layers, four layers, etc., and the whole machine protection aluminum foil layer on the chassis protection plate 3 can be two layers, three layers, four layers, etc.

[0036] Optionally, a whole-machine protective aluminum foil layer is affixed to the region where the frame 1 forms a magnetic isolation cavity. In this embodiment, since the frame 1 has a relatively thick wall thickness, it itself has a good magnetic isolation effect. A whole-machine protective aluminum foil layer is affixed to the region where the frame 1 forms a magnetic isolation cavity, which can further enhance the magnetic isolation effect of the frame 1 at the position where the whole-machine protective aluminum foil layer is affixed.

[0037] Optionally, the first anti-magnetic interference device includes an ECU; the anti-magnetic interference engineering machinery also includes a local anti-magnetic device, the local anti-magnetic device is arranged in the magnetic isolation cavity, the local anti-magnetic device includes a first shielding box 51 and a first aluminum foil layer, the ECU is arranged in the first shielding box 51, and the first aluminum foil layer is laid on the inner wall of the first shielding box 51. In this embodiment, the first shielding box 51 is made of steel material and is fixed on the frame, and the ECU is arranged in the first shielding box 51, thereby weakening external magnetic interference. At the same time, the first aluminum foil layer is laid on the inner wall of the first shielding box 51, thereby further weakening external magnetic interference.

[0038] Optionally, the first aluminum foil layer is provided with at least two layers. In this embodiment, the number of layers of the first aluminum foil layer is determined by the magnetic field strength. Specifically, the first aluminum foil layer can be two layers, three layers, four layers, etc.

[0039] Optionally, the first anti-magnetic interference device also includes a urea tank 41; the anti-magnetic interference engineering machinery also includes a local anti-magnetic device, the local anti-magnetic device is arranged in the magnetic isolation cavity, the local anti-magnetic device includes a second shielding box 52 and a second aluminum foil layer, the urea tank 41 is arranged in the second shielding box 52, and the second aluminum foil layer is laid on the inner wall of the second shielding box 52. A variety of sensors are arranged in the urea tank 41, so it needs to avoid external magnetic interference. In this embodiment, the second shielding box 52 is made of steel material and is fixed on the frame. The urea tank 41 is arranged in the second shielding box 52, so that the external magnetic interference can be weakened. At the same time, the second aluminum foil layer is laid on the inner wall of the second shielding box 52, so that the external magnetic interference can be further weakened.

[0040] Optionally, the second aluminum foil layer is provided with at least two layers. In this embodiment, the number of layers of the second aluminum foil layer is determined by the magnetic field strength. Specifically, the second aluminum foil layer can be two layers, three layers, four layers, etc.

[0041] Optionally, the first anti-magnetic interference device also includes a control harness; the anti-magnetic interference engineering machinery also includes a local anti-magnetic device, the local anti-magnetic device is arranged in the magnetic isolation cavity, and the local anti-magnetic device includes a third aluminum foil layer 53, and the third aluminum foil layer 53 is coated on the control harness. In this embodiment, the control harness is usually connected to the MCU, sensors, actuators, etc. for communication. If the control harness is interfered by the external magnetic field, the MCU cannot receive accurate signals from the sensor, and the MCU cannot accurately control each actuator. The third aluminum foil layer 53 is coated on the control harness, thereby weakening the interference of the strong external magnetic field on the control harness.

[0042] Optionally, the anti-magnetic interference engineering machinery further includes a second anti-magnetic interference device and a magnetically isolated cab 6 arranged on the frame 1, and the second anti-magnetic interference device is arranged in the magnetically isolated cab 6. In this embodiment, the second magnetically isolated device is usually a T-BOX and a human-computer interaction device, etc. The second magnetically isolated device is assembled in the cab, and when the cab door is closed, the magnetically isolated cab 6 can achieve the effect of weakening the strong magnetic field.

[0043] Optionally, the magnetic-isolating cab 6 includes a main body 61 and magnetic-isolating glass 62. The main body 61 is provided with a cockpit and a window frame connected to the cockpit. The magnetic-isolating glass 62 closes the window frame to form a negative pressure closed space in the cockpit. In this embodiment, the main body 61 is usually made of a metal material, which has a magnetic-isolating effect. The glass is set as the magnetic-isolating glass 62, which further improves the magnetic-isolating ability of the cab. As for the structure of the magnetic-isolating glass 62, it can include an inner layer of glass, a magnetic-isolating metal mesh and an outer layer of glass that are sequentially attached. This is a prior art and will not be described in detail here.

[0044] Optionally, a third aluminum foil layer is laid on the inner wall of the cockpit. This arrangement can enhance the magnetic isolation capability of the magnetic isolation cab 6.

[0045] Optionally, the anti-magnetic interference engineering machinery may be an anti-magnetic interference loader, an anti-magnetic interference excavator, or an anti-magnetic interference lifting work platform, etc.

[0046] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Anti-magnetic interference engineering machinery, characterized in that: The invention comprises a vehicle frame (1), a hood (2), a chassis protection plate (3), a whole-machine protection aluminum foil layer and a first anti-magnetic interference device, wherein the hood (2) is arranged above the vehicle frame (1), the chassis protection plate (3) is arranged below the vehicle frame (1), the wall surface of the chassis protection plate (3) opposite to the hood (2) and the inner wall of the hood (2) are both paved with the whole-machine protection aluminum foil layer, the hood (2), the vehicle frame (1) and the chassis protection plate (3) are arranged to form a magnetic isolation cavity, and the first anti-magnetic interference device is arranged in the magnetic isolation cavity.

2. The anti-magnetic interference engineering machinery according to claim 1, characterized in that: The whole machine protective aluminum foil layer on the machine cover (2) is provided with at least two layers; And / or, the whole machine protective aluminum foil layer on the chassis protection plate (3) is provided with at least two layers.

3. The anti-magnetic interference engineering machinery according to claim 1, characterized in that: The area of ​​the vehicle frame (1) that forms the magnetic isolation cavity is provided with the whole machine protective aluminum foil layer.

4. The anti-magnetic interference engineering machinery according to claim 1, characterized in that: The first anti-magnetic interference device includes an ECU; The anti-magnetic interference engineering machinery further comprises a local anti-magnetic device, the local anti-magnetic device is arranged in the magnetic isolation cavity, the local anti-magnetic device comprises a first shielding box (51) and a first aluminum foil layer, the ECU is arranged in the first shielding box (51), and the first aluminum foil layer is laid on the inner wall of the first shielding box (51).

5. The anti-magnetic interference engineering machinery according to claim 4, characterized in that: The first aluminum foil layer is provided with at least two layers.

6. The anti-magnetic interference engineering machinery according to claim 1, characterized in that: The first anti-magnetic interference device also includes a urea tank (41); The anti-magnetic interference engineering machinery further comprises a local anti-magnetic device, the local anti-magnetic device is arranged in the magnetic isolation cavity, the local anti-magnetic device comprises a second shielding box (52) and a second aluminum foil layer, the urea tank (41) is arranged in the second shielding box (52), and the second aluminum foil layer is laid on the inner wall of the second shielding box (52).

7. The anti-magnetic interference engineering machinery according to claim 6, characterized in that: The second aluminum foil layer is provided with at least two layers.

8. The anti-magnetic interference engineering machinery according to claim 1, characterized in that: The first anti-magnetic interference device also includes a control harness; The anti-magnetic interference engineering machinery further comprises a local anti-magnetic device, the local anti-magnetic device is arranged in the magnetic isolation cavity, the local anti-magnetic device comprises a third aluminum foil layer (53), and the third aluminum foil layer (53) is coated on the control harness.

9. The anti-magnetic interference engineering machinery according to any one of claims 1 to 8, characterized in that: The anti-magnetic interference engineering machinery further comprises a second anti-magnetic interference device and a magnetically isolated cab (6) arranged on the vehicle frame (1), wherein the second anti-magnetic interference device is arranged in the magnetically isolated cab (6).

10. The anti-magnetic interference engineering machinery according to claim 9, characterized in that: The magnetically isolated cab (6) comprises a main body (61) and magnetically isolated glass (62); the main body (61) is provided with a cockpit and a window frame connected to the cockpit; the magnetically isolated glass (62) closes the window frame so that the cockpit forms a negative pressure closed space.

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