Axle current detection device and vehicle with same

Abstract

The utility model provides a shaft current detection device and a vehicle with the same, the shaft current detection device comprises a current diverter and a grounding carbon brush, one end of the current diverter is connected with a flywheel of an engine of the vehicle through the grounding carbon brush; one end of the alarm module is connected with the frame, and the other end of the alarm module is connected with the other end of the current shunt; wherein the alarm module has an alarm current, and when the current passing through the alarm module reaches the alarm current, the alarm module sends an alarm signal. According to the technical scheme provided by the utility model, the technical problem that the shaft current is inconvenient to detect in the prior art can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shaft current detection device technical field, specifically, a kind of shaft current detection device and vehicle with it. BACKGROUND

[0002] At present, if engine appears shaft current, shaft current will cause damage to the bearing of main generator and engine crankshaft, change the mechanical properties of bearing and engine crankshaft, cause engine life to decline, even can cause maintenance cost to increase.In prior art, shaft current is generally tested manually.

[0003] However, using the test method in prior art, not only test operation is complex, but also there is the security risk that personnel is involved into engine flywheel. INVENTION CONTENTS

[0004] The main purpose of the utility model is to provide a kind of shaft current detection device and vehicle with it, to solve the technical problem that shaft current is not detected in prior art.

[0005] To achieve the above-mentioned purpose, according to one aspect of the utility model, a kind of shaft current detection device is provided, comprising:

[0006] Current shunt and ground carbon brush, the first connecting end of the current shunt is connected with the flywheel of the engine of vehicle through ground carbon brush;

[0007] Current alarm module, the first connecting end of the current alarm module is connected with the frame, and the second connecting end of the current alarm module is connected with the second connecting end of the current shunt;

[0008] Power module, the current shunt, the current alarm module are connected with the power module, and the power module provides power supply for the current shunt and the current alarm module;

[0009] Among them, the current alarm module has alarm current;When the current flowing through the current alarm module is greater than or equal to the alarm current, the alarm module sends alarm signal.

[0010] Further, the shaft current detection device further comprises:

[0011] Current display controller, the power module is connected with the current display controller, and the power module provides power supply for the current display controller;The current display controller is connected with the current shunt, to display the current of the current shunt by the current display controller.

[0012] Further, the current display controller is installed on the driving workbench of the vehicle.

[0013] Further, the power module is arranged in a cab of the vehicle.

[0014] Further, the current alarm module comprises:

[0015] a current detection piece, a first connecting end of the current detection piece forms a first connecting end of the current alarm module, and a second connecting end of the current detection piece forms a second connecting end of the current alarm module;

[0016] a sound production piece connected in series with the current detection piece, and the alarm signal is a sound signal;

[0017] wherein the alarm current is a working current of the sound production piece, and when a current flowing through the current alarm module is greater than or equal to the alarm current, the sound production piece works to produce an alarm sound.

[0018] Further, the shaft current detection device further comprises:

[0019] a mounting frame mounted on a support of the engine, the mounting frame being located below the flywheel, and the mounting frame being used for mounting the grounding carbon brush.

[0020] Further, the shaft current detection device further comprises:

[0021] a protective shell mounted on the support of the engine, the protective shell having a protective cavity, and the current shunt and the alarm module being mounted in the protective cavity.

[0022] Further, the shaft current detection device further comprises:

[0023] an insulating plate mounted in the protective cavity, and the current shunt and the alarm module being mounted on the insulating plate.

[0024] Further, the alarm current is 1A.

[0025] According to another aspect of the present application, a vehicle is provided, comprising:

[0026] an electric wheel;

[0027] The shaft current detection device provided above is used for detecting a shaft current of the electric wheel.

[0028] The technical scheme of the present application can determine whether a shaft current is generated through an alarm signal of an alarm module, the detection device does not need manual participation in testing, and thus the degree of manual participation is reduced, and the working safety of the staff is facilitated to be ensured. In addition, the shaft current detection device provided in the present embodiment can also automatically detect the shaft current. Attached Figure Description

[0029] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0030] Figure 1 A partial structural schematic diagram of the shaft current detection device provided according to an embodiment of the present invention is shown;

[0031] Figure 2 A schematic diagram of the installation structure of the current shunt and alarm module provided according to an embodiment of the present invention is shown.

[0032] The above figures include the following reference numerals:

[0033] 10. Current shunt;

[0034] 20. Current alarm module;

[0035] 21. Current sensing element;

[0036] 22. Sound-producing components;

[0037] 30. Power supply module;

[0038] 40. Current display controller;

[0039] 50. Protective casing;

[0040] 51. Protective cavity;

[0041] 52. Sound hole;

[0042] 60. Insulating board;

[0043] 70. Grounding carbon brush;

[0044] 80. Grounding conductor. Detailed Implementation

[0045] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0046] like Figure 1The embodiment of the utility model provides a kind of shaft current detection device, which includes current shunt 10, grounding carbon brush 70, current alarm module 20 and power module 30, the first connecting end of current shunt 10 is connected with the flywheel of the engine of vehicle by grounding carbon brush 70.The first connecting end of current alarm module 20 is connected with the frame, and the second connecting end of current alarm module 20 is connected with the second connecting end of current shunt 10.Current shunt 10, current alarm module 20 are connected with power module 30, and power module 30 provides power supply for current shunt 10 and current alarm module 20.Current alarm module 20 has alarm current; when the current flowing through current alarm module 20 is greater than or equal to alarm current, alarm module sends alarm signal.

[0047] The embodiment of the utility model provides current detection device, whether shaft current is generated by the alarm signal of alarm module, the above-mentioned detection device does not need manual participation test, reduces the degree of manual participation, and facilitates to guarantee the work safety of staff.In addition, the shaft current detection device provided in the embodiment can also automatically detect, and the current detection device can detect shaft current along with the operation of vehicle, thereby facilitating the detection of shaft current.Therefore, by the technical scheme provided in the embodiment, the technical problem that shaft current is inconvenient to detect in the prior art can be solved.

[0048] Specifically, the frame forms a ground conductor 80.

[0049] In the embodiment, the shaft current detection device further includes a current display controller 40, the power module 30 is connected with the current display controller 40, and the power module 30 provides power supply for the current display controller 40; the current display controller 40 is connected with the current shunt 10 to display the current of the current shunt 10 through the current display controller 40.By adopting such a setting, the current value of shaft current can be quickly and accurately obtained, so as to facilitate subsequent operation of staff and improve the convenience of operation.

[0050] Specifically, the current display controller 40 is installed on the driving workbench of the vehicle.By adopting such a structural arrangement, the driver located at the driving workbench can observe the specific current value of shaft current at any time, which facilitates testing and further improves the convenience of operation and monitoring, and also facilitates the driver to make timely adaptive adjustment and judgment.

[0051] In the embodiment, the power module 30 is arranged in the cab of the vehicle. With such an arrangement, the normal operation of the current display controller 40 can be ensured by the power module 30, and in addition, such an arrangement can facilitate effective protection of the power module 30, avoiding the power module 30 being exposed to the outside and being easily damaged or even causing leakage, etc., thereby ensuring that the power module can stably provide power for the current shunt 10 and the current alarm module 20.

[0052] Specifically, the power module 30 can be a power module 30 of the vehicle itself, so that no additional power module needs to be arranged, and only the existing power module 30 of the vehicle itself needs to be connected, which is convenient to operate and reduces cost.

[0053] Specifically, the current alarm module 20 includes the current detection member 21 and the sounding member 22, the first connecting end of the current detection member 21 forms the first connecting end of the current alarm module 20, and the second connecting end of the current detection member 21 forms the second connecting end of the current alarm module 20. The sounding member 22 is connected in series with the current detection member 21, and the alarm signal is a sound signal. The alarm current is the working current of the sounding member 22, and when the current flowing through the current alarm module 20 is greater than or equal to the alarm current, the sounding member 22 works to emit an alarm sound. In this way, when the current flowing through the current detection member 21 and the current flowing through the sounding member 22 are greater than or equal to the alarm current, the sounding member 22 works to emit a sound signal to remind the worker that the shaft current has been generated, and when the current flowing through the current detection member 21 and the current flowing through the sounding member 22 are less than the alarm current, the sounding member 22 does not work. With such a structural arrangement, it can be detected whether the shaft current is generated, which is convenient for the worker to judge.

[0054] Specifically, the sounding member 22 can be a sounding horn.

[0055] In the embodiment, the shaft current detection device further includes a mounting bracket, the mounting bracket is mounted on a support of the engine, the mounting bracket is located below the flywheel, and the mounting bracket is used for mounting the grounding carbon brush 70. With such a structural arrangement, the mounting stability of the grounding carbon brush 70 can be improved, thereby facilitating improvement of the detection accuracy.

[0056] As Figure 2As shown, in this embodiment, the shaft current detection device also includes a protective housing 50, which is mounted on the engine mount. The protective housing 50 has a protective cavity 51, within which the current shunt 10 and the current alarm module 20 are both installed. This structural arrangement allows for effective protection of the current shunt 10 and the alarm module by the protective housing 50, preventing external factors such as rain from affecting their normal operation. This design is suitable for vehicles operating outdoors for extended periods, ensuring the long-term effective and normal operation of the detection device.

[0057] Specifically, in this embodiment, the protective shell 50 is provided with a sound outlet 52, which is disposed opposite to the generating part of the sound-emitting element 22. The sound-emitting element 22 is attached to the protective shell 50, and a sealing element is provided between the sound outlet 52 and the sound-emitting element to prevent external rainwater and other substances from entering the protective shell 50.

[0058] In this embodiment, to facilitate the wiring and installation of the connection lines between the current shunt 10 and the current alarm module 20, corresponding wiring holes are also provided on the protective housing 50. The protective housing 50 includes a main housing and a door panel, which can be opened or closed.

[0059] Specifically, the axle current detection device also includes an insulating plate 60, which is installed inside the protective cavity 51. The current shunt 10 and the alarm module are both mounted on the insulating plate 60. This structural arrangement facilitates external insulation of the current shunt 10 and the alarm module, preventing leakage and ensuring their normal operation. Furthermore, this design is suitable for long-term outdoor operation of vehicles, effectively protecting the axle current detection device.

[0060] In this embodiment, the alarm current is 1A. When the shaft current is greater than or equal to 1A, it will cause significant damage. By setting the alarm current to 1A, the structure can be effectively protected. Specifically, when the shaft current is less than 1A, the impact on the crankshaft is small, and the safety hazard is minimal, so it can be ignored.

[0061] like Figure 1 As shown, by selecting the moving part of the engine flywheel as the carbon brush contact point, the shaft current generated by the rotor is led to one end of the current shunt 10 through the engine flywheel. The other end of the current shunt 10 is connected to one end of the alarm module, and the other end of the alarm module is connected to the vehicle frame. In this way, the main generator rotor current forms a closed loop. The micro current is input to the current display through the current shunt 10 to display the actual current. The alarm module is set to alarm when the current reaches the upper limit value.

[0062] The carbon brush mounting rack is fixed at a position 10 cm below the flywheel of the engine support, so as to ensure that the brush surface of the grounding carbon brush 70 is closely combined with the flywheel, and the current shunt 10 is selected and installed with a parameter of 100:1.

[0063] The mounting rack is mounted as follows: the mounting rack is fixed on the steel sheet by welding fixing bolts on the engine support, and then the steel sheet is fixed on the engine support by using 5 / 8 bolts.

[0064] The current shunt 10 and the alarm module are mounted as follows: the shell of the current shunt 10 is fixed under the front bumper on the left by using 1 / 2 bolts, and then the current shunt 10 and the alarm module are mounted on the insulating plate 60 in the protective shell 50, one end of the current shunt 10 is connected to the carbon brush by a wire, the other end is connected to the alarm module, and the other end of the alarm module is connected to the vehicle frame.

[0065] The current display is mounted on the workbench in the cab by using 7 / 16 bolts, then the output line of the current shunt 10 is connected to the current display, the power supply of the current display is connected to the 24V switch of the truck, and the display is mounted.

[0066] Embodiment two of the utility model provides a kind of vehicle, the vehicle includes electric wheel and the axle current detection device provided above, and axle current detection device is used to detect the axle current of electric wheel.

[0067] The vehicle in the embodiment can be a mine electric wheel truck, and the axle current detection device is safe, simple, efficient, low-cost and intelligent.The traditional handheld monitoring, which seriously affects efficiency and has safety hazards, is changed to automatic intelligent monitoring mode.The actual current is displayed by using high-precision current display.The actual current is monitored by adjustable alarm module, and the monitoring current range is 0.1-50A, so the monitoring range is wide and the precision is high.The brush holder of adjustable grounding carbon brush 70 is used to maximize the service life of carbon brush.The current direction is designed for closed-loop control detection.

[0068] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects: reducing personnel operation, improving the application of intelligent device, promoting the high-quality improvement of maintenance work, and becoming more safe, simple, efficient, low-cost and intelligent. The mine electric wheel truck shaft current monitoring device is safe, simple, efficient, low-cost and intelligent. The traditional handheld monitoring which seriously affects the benefits, efficiency and has safety hazards is changed to automatic intelligent monitoring mode. The monitoring and analysis of the shaft current of the main generator of the large mine electric wheel truck are realized, and large equipment failures caused by excessive shaft current of the main generator are effectively avoided. Through on-machine operation tracking for nearly two years, the monitoring device can accurately monitor the main generator leakage current, completely replaces the dangerous work of traditional manual handheld shaft current test, and has good overall performance. The current display is installed on the workbench of the cab, and the actual value of the shaft current can be intuitively and accurately displayed. The alarm module alarms when the current reaches the upper limit value, so that the maintenance personnel can intervene in maintenance at the first time to prevent the expansion of the fault.

[0069] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments consistent with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0070] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application unless otherwise specifically stated. It is to be understood that the drawings shown in the figures are not drawn to scale for ease of illustration of the various components. Techniques, methods, and apparatus known to those of ordinary skill can not be discussed in detail because such techniques, methods, and apparatus are believed to be readily accepted as part of a reasonable understanding of the specification. In all examples shown and discussed herein, any specific value is to be interpreted as merely exemplary and not as a limitation. Thus, other examples of the example embodiments can have different values. It is noted that like numbers and letters refer to like elements throughout the several views of the drawings and, as such, no further discussion with regard thereto is deemed necessary.

[0071] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are generally based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, without the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the protection scope of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0072] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0073] In addition, it should be noted that the use of "first", "second" and the like to define parts only facilitates the differentiation of corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as a limitation on the protection scope of the present application.

[0074] The above only describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A shaft current detection device, characterized in that, include: A current shunt (10) and a grounding carbon brush (70), wherein the first connection terminal of the current shunt (10) is connected to the flywheel of the vehicle's engine via the grounding carbon brush (70); A current alarm module (20) is provided, wherein the first connection terminal of the current alarm module (20) is connected to the vehicle frame, and the second connection terminal of the current alarm module (20) is connected to the second connection terminal of the current shunt (10). The power module (30) is connected to the current shunt (10) and the current alarm module (20), and the power module (30) provides power to the current shunt (10) and the current alarm module (20). The current alarm module (20) has an alarm current; when the current flowing through the current alarm module (20) is greater than or equal to the alarm current, the alarm module issues an alarm signal.

2. The shaft current detection device according to claim 1, characterized in that, The shaft current detection device further includes: A current display controller (40) is provided with a power supply module (30) connected to the current display controller (40), the power supply module (30) providing power to the current display controller (40); the current display controller (40) is connected to the current shunt (10) to display the current of the current shunt (10) through the current display controller (40).

3. The shaft current detection device according to claim 2, characterized in that, The current display controller (40) is installed on the driver's console of the vehicle.

4. The shaft current detection device according to claim 2, characterized in that, The power module (30) is located in the driver's cab of the vehicle.

5. The shaft current detection device according to claim 1, characterized in that, The current alarm module (20) includes: A current detection element (21) is provided, wherein the first connection end of the current detection element (21) forms the first connection end of the current alarm module (20), and the second connection end of the current detection element (21) forms the second connection end of the current alarm module (20). A sound-emitting element (22) is connected in series with the current detection element (21), and the alarm signal is an audio signal; The alarm current is the operating current of the sound-emitting element (22); when the current flowing through the current alarm module (20) is greater than or equal to the alarm current, the sound-emitting element (22) operates to emit an alarm sound.

6. The shaft current detection device according to claim 1, characterized in that, The shaft current detection device further includes: Mounting bracket, mounted on the engine bracket, located below the flywheel, for mounting the grounding carbon brush (70).

7. The shaft current detection device according to claim 1, characterized in that, The shaft current detection device further includes: A protective housing (50) is mounted on the bracket of the engine. The protective housing (50) has a protective cavity (51). The current shunt (10) and the current alarm module (20) are both installed in the protective cavity (51).

8. The shaft current detection device according to claim 7, characterized in that, The shaft current detection device further includes: An insulating plate (60) is installed inside the protective cavity (51), and the current shunt (10) and the current alarm module (20) are both installed on the insulating plate (60).

9. The shaft current detection device according to any one of claims 1 to 8, characterized in that, The alarm current is 1A.

10. A vehicle, characterized in that, include: Electric wheels; The shaft current detection device according to any one of claims 1 to 9, wherein the shaft current detection device is used to detect the shaft current of the electric wheel.

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