CN223582031U - Shaft current detection device and vehicle with same - Google Patents

Abstract

This invention provides an axle current detection device and a vehicle incorporating it. The axle current detection device includes: a current shunt and a grounding carbon brush, one end of which is connected to the flywheel of the vehicle's engine via the grounding carbon brush; and an alarm module, one end of which is connected to the vehicle frame, and the other end of which is connected to the other end of the current shunt. The alarm module has an alarm current; when the current passing through the alarm module reaches the alarm current, the alarm module issues an alarm signal. The technical solution provided by this invention solves the technical problem of inconvenient axle current detection in existing technologies.

Description

Shaft current detection device and vehicle with same

Technical Field

The utility model relates to the technical field of shaft current detection devices, in particular to a shaft current detection device and a vehicle with the same.

Background

At present, if shaft current appears in the engine, the shaft current will damage the bearing of the main generator and the engine crankshaft, change the mechanical properties of the bearing and the engine crankshaft, cause the service life of the engine to be reduced, and even cause the maintenance cost to be increased. In the prior art, shaft current is generally tested manually by hand.

However, with the testing method in the prior art, not only is the testing operation complex, but also there is a potential safety hazard that personnel are involved in the flywheel of the engine.

Disclosure of utility model

The utility model mainly aims to provide a shaft current detection device and a vehicle with the same, so as to solve the technical problem that the shaft current detection is inconvenient in the prior art.

In order to achieve the above object, according to one aspect of the present utility model, there is provided a shaft current detection device including:

The first connecting end of the current shunt is connected with a flywheel of an engine of the vehicle through the grounding carbon brush;

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;

The current divider and the current alarm module are connected with the power module, and the power module provides power for the current divider and the current alarm module;

the current alarm module is provided with an alarm current, and when the current flowing through the current alarm module is greater than or equal to the alarm current, the alarm module sends out an alarm signal.

Further, the shaft current detection device further includes:

The current display controller is connected with the power module, and the power module provides power for the current display controller; the current display controller is connected with the current shunt so as to display the current of the current shunt through the current display controller.

Further, the current display controller is mounted on a driving table of the vehicle.

Further, the power module is disposed within a cab of the vehicle.

Further, the current alarm module includes:

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

The sounding piece is connected with the current detection piece in series, and the alarm signal is a sound signal;

When the current flowing through the current alarm module is greater than or equal to the alarm current, the sounding part works to sound an alarm.

Further, the shaft current detection device further includes:

The mounting bracket is mounted on the support of the engine, the mounting bracket is located below the flywheel, and the mounting bracket is used for mounting the grounding carbon brush.

Further, the shaft current detection device further includes:

The protection shell is arranged on a support of the engine and is provided with a protection cavity, and the current divider and the alarm module are arranged in the protection cavity.

Further, the shaft current detection device further includes:

the insulation board is installed in the protection cavity, and the current divider and the alarm module are both installed on the insulation board.

Further, the alarm current is 1A.

According to another aspect of the present utility model, there is provided a vehicle including:

An electric wheel;

the shaft current detection device is used for detecting the shaft current of the electric wheel.

By applying the technical scheme of the utility model, whether the shaft current is generated or not is judged by the alarm signal of the alarm module, and the detection device does not need to be manually involved in the test, so that the manual participation degree is reduced, and the working safety of staff is conveniently ensured. In addition, the shaft current detection device provided by the embodiment can also automatically detect, so that the shaft current is conveniently detected.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a schematic view showing a part of the structure of a shaft current detecting apparatus provided according to an embodiment of the present utility model;

Fig. 2 shows a schematic diagram of an installation structure of a current diverter and an alarm module provided according to an embodiment of the present utility model.

Wherein the above figures include the following reference numerals:

10. a current shunt;

20. A current alarm module;

21. A current detecting member;

22. A sound producing member;

30. A power module;

40. A current display controller;

50. A protective shell;

51. A protective cavity;

52. A sound outlet hole;

60. an insulating plate;

70. a grounding carbon brush;

80. A ground conductor.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

As shown in fig. 1, an embodiment of the present utility model provides a shaft current detection device including a current shunt 10, a ground carbon brush 70, a current alarm module 20, and a power module 30, wherein a first connection end of the current shunt 10 is connected to a flywheel of an engine of a vehicle through the ground carbon brush 70. The first connection end of the current alarm module 20 is connected with the vehicle frame, and the second connection end of the current alarm module 20 is connected with the second connection end of the current shunt 10. The current divider 10 and the current alarm module 20 are connected with the power module 30, and the power module 30 provides power for the current divider 10 and the current alarm module 20. The current alarm module 20 has an alarm current, and when the current flowing through the current alarm module 20 is greater than or equal to the alarm current, the alarm module sends out an alarm signal.

The embodiment of the utility model provides the current detection device, and whether the shaft current is generated or not is judged by the alarm signal of the alarm module, so that the detection device does not need to be manually tested, the manual participation degree is reduced, and the work safety of staff is conveniently ensured. In addition, the shaft current detection device provided by the embodiment can also automatically detect, and the current detection device can detect the shaft current along with the running of the vehicle, so that the shaft current is conveniently detected. Therefore, through the technical scheme provided by the embodiment, the technical problem that the shaft current is inconvenient to detect in the prior art can be solved.

Specifically, the frame forms a ground conductor 80.

In this embodiment, the shaft current detection device further includes a current display controller 40, the power module 30 is connected to the current display controller 40, the power module 30 provides power for the current display controller 40, and the current display controller 40 is connected to the current splitter 10 to display the current of the current splitter 10 through the current display controller 40. By adopting the arrangement, the current value of the shaft current can be conveniently and rapidly obtained, so that the subsequent operation of staff is facilitated, and the convenience of operation is improved.

Specifically, the current display controller 40 is mounted on a driving table of the vehicle. By adopting the structure, a driver at the driving workbench can conveniently observe the specific current value of the shaft current at any time, the test is convenient, the convenience of operation and monitoring is further improved, and the driver can conveniently know the current in time and then adjust and judge the adaptability.

In the present embodiment, the power supply module 30 is provided in the cab of the vehicle. By adopting the arrangement, the normal operation of the current display controller 40 can be ensured through the power module 30, and in addition, the arrangement can be convenient for effectively protecting the power module 30, so that the conditions that the power module 30 is exposed and is easy to damage or even leak are avoided, and the power module can stably provide power for the current divider 10 and the current alarm module 20.

Specifically, the power module 30 may be a power module 30 of the vehicle, so that no extra power is required to be provided, and only the existing power module 30 of the vehicle is required to be connected, thereby facilitating operation and reducing cost.

Specifically, the current alarm module 20 includes a current detecting member 21 and a sounding member 22, a first connection end of the current detecting member 21 forms a first connection end of the current alarm module 20, and a second connection end of the current detecting member 21 forms a second connection end of the current alarm module 20. The sounding member 22 is connected in series with the current detecting member 21, and the alarm signal is an acoustic signal. The alarm current is the working current of the sounding element 22, and when the current flowing through the current alarm module 20 is greater than or equal to the alarm current, the sounding element 22 works to sound an alarm. Thus, when the current flowing through the current detecting member 21 and the current flowing through the sounding member 22 are greater than or equal to the alarm current, the sounding member 22 performs a sounding operation to sound a sound signal to alert a worker that the shaft current has been generated, and when the current flowing through the current detecting member 21 and the current flowing through the sounding member 22 are less than the alarm current, the sounding member 22 does not operate. By adopting the structure, whether the axial current is generated or not can be sensitively detected, and the judgment of staff is facilitated.

Specifically, the sounding member 22 may be a sounding horn.

In this embodiment, the shaft current detecting device further includes a mounting frame mounted on a bracket of the engine, the mounting frame being located below the flywheel, the mounting frame being for mounting the grounding carbon brush 70. With such a structural arrangement, the mounting stability of the grounding carbon brush 70 can be facilitated to be improved, thereby facilitating improvement of the accuracy of detection.

As shown in fig. 2, in the present embodiment, the shaft current detection device further includes a protection case 50, the protection case 50 is mounted on a bracket of the engine, the protection case 50 has a protection cavity 51, and the current shunt 10 and the current alarm module 20 are both mounted in the protection cavity 51. By adopting the structure, the current diverter 10 and the alarm module can be effectively protected through the protective shell 50, the current diverter 10 and the alarm module can be conveniently protected, the influence of external rainwater weather and other conditions on the normal operation of the current diverter 10 and the alarm module is avoided, the detection device is suitable for the long-term outdoor operation of a vehicle, and the long-term effective normal operation of the detection device can be ensured.

Specifically, the protecting shell 50 in this embodiment is provided with a sound outlet 52, the sound outlet 52 is opposite to the generating part of the sounding member 22, the sounding member 22 is attached to the protecting shell 50, and a sealing member is disposed between the sound outlet 52 and the sounding member to prevent substances such as external rainwater from entering the protecting shell 50.

In this embodiment, in order to facilitate the installation of the wiring of the connection line between the current shunt 10 and the current alarm module 20, corresponding wiring holes are further provided on the protection case 50. The protective case 50 includes a main case and a door panel, which is openably or closably provided.

Specifically, the shaft current detection device further includes an insulating plate 60, the insulating plate 60 is installed in the protection cavity 51, and the current shunt 10 and the alarm module are both installed on the insulating plate 60. By adopting the structure, the current divider 10 and the alarm module can be conveniently insulated, the occurrence of electric leakage and other conditions is avoided, and the influence of an external structure on the normal operation of the current divider 10 and the alarm module is also avoided. In addition, the arrangement is also suitable for long-term outdoor running conditions of the vehicle, and the shaft current detection device is effectively protected.

In this embodiment, the alarm current is 1A. When the shaft current is greater than or equal to 1A, larger damage will occur, and effective protection of the structure can be facilitated by setting the alarm current to 1A. Specifically, when the shaft current is less than 1A, the influence on the crankshaft is small, and the potential safety hazard is small, so that the crank can be ignored.

As shown in fig. 1, by selecting the movable part of the engine flywheel as a carbon brush contact point, the shaft current generated by the rotor leads the shaft current to one end of the current divider 10 through the engine flywheel, the other end of the current divider 10 is connected with one end of the alarm module, the other end of the alarm module is connected with the frame, thus the rotor current of the main generator forms a closed loop, micro current is input into the current display through the current divider 10 to display the actual current, and the alarm module sets the current to reach the upper limit value for alarm.

At the position of ten centimeters right below the flywheel of the engine bracket, a carbon brush mounting bracket is fixed, the brush face of the grounding carbon brush 70 is ensured to be tightly combined with the flywheel, and the current shunt 10 is selected to be mounted according to the parameters of 100:1. The copper wire resistance input to the current display through the current shunt 10 must not be greater than 0.5 ohm, and the alarm module sets the current upper limit value parameter to 1A as the alarm parameter value.

The mounting bracket is mounted by welding fixing bolts to the engine mount, fixing the mounting bracket to the steel sheet, and then fixing the steel sheet to the engine mount using 5/8 bolts.

The current diverter 10 and the alarm module are installed by fixing the current diverter 10 housing under the left front bumper using 1/2 bolts, then installing the current diverter 10 and the alarm module on the insulating plate 60 inside the protective housing 50, connecting one end of the current diverter 10 to the carbon brush with a wire, connecting the other end to the alarm module, and connecting the other end of the alarm module to the vehicle frame.

The current display is mounted on a cab workbench by using 7/16 bolts, then the output line of the current divider 10 is connected to the current display, the current display is powered to the 24V switch of the truck, and the display is mounted.

The second embodiment of the utility model provides a vehicle, which comprises an electric wheel and the shaft current detection device provided by the first embodiment, wherein the shaft current detection device is used for detecting the shaft current of the electric wheel.

The vehicle in the embodiment can be a mining electric wheel truck, and the shaft current detection device is safe, simple and convenient to use, high in efficiency, low in cost and intelligent. The traditional handheld monitoring which seriously affects the benefit, the efficiency and has potential safety hazards is changed into an automatic intelligent monitoring mode. The actual current is displayed by using a high precision current display. The actual current is monitored through the adjustable alarm module, the monitoring current range is 0.1-50A, the monitoring range is wide, and the accuracy is high. The brush holder of the adjustable grounding carbon brush 70 is used to maximize the life of the carbon brush. And designing closed-loop control detection for the current direction.

From the above description, it can be seen that the above embodiment of the present utility model achieves the following technical effects of reducing personnel operations, improving the application of the intelligent device, improving the quality of the boosting maintenance work, and becoming safer, simpler, more efficient, lower cost, and intelligent. The mining electric wheel truck axle current monitoring device is safe, simple and convenient to use, high in efficiency, low in cost and intelligent. The traditional handheld monitoring which seriously affects the benefit, the efficiency and has potential safety hazards is changed into an automatic intelligent monitoring mode. The monitoring and analysis of the main generator shaft current of the large-scale mining electric wheel truck are well realized, and the large equipment fault caused by the overlarge main generator shaft current is effectively avoided. Through the last machine operation tracking of nearly two years, the monitoring device can accurately monitor the main generator leakage current, completely replaces the dangerous work of traditional manual handheld test shaft current, and has good overall performance. The current display is arranged on the cab workbench, so that the actual value of the shaft current can be intuitively and accurately displayed, the current of the alarm module reaches the limited upper limit value to alarm, maintenance personnel intervenes in maintenance for the first time, and the fault expansion is stopped.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, and are merely for convenience of describing the present application and simplifying the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of the present application, and the azimuth terms "inside and outside" refer to inside and outside with respect to the outline of each component itself.

Spatially relative terms, such as "above," "upper" and "upper surface," "above" and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the process is carried out, the exemplary term "above" may be included. Upper and lower. Two orientations below. The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A shaft current detection device, comprising:

The device comprises a current shunt (10) and a grounding carbon brush (70), wherein a first connecting end of the current shunt (10) is connected with a flywheel of an engine of a vehicle through the grounding carbon brush (70);

The current alarm module (20), the first connecting end of the current alarm module (20) is connected with the frame, and the second connecting end of the current alarm module (20) is connected with the second connecting end of the current shunt (10);

The power module (30), the said current shunt (10), said current alarm module (20) are connected with said power module (30), the said power module (30) provides the power for said current shunt (10) and said current alarm module (20);

The current alarm module (20) is provided with an alarm current, and when the current flowing through the current alarm module (20) is greater than or equal to the alarm current, the alarm module sends out an alarm signal.

2. The shaft current detection device according to claim 1, characterized in that the shaft current detection device further comprises:

The current display controller (40) is connected with the current display controller (40), the power module (30) provides power for the current display controller (40), and the current display controller (40) is connected with the current divider (10) so as to display the current of the current divider (10) through the current display controller (40).

3. The shaft current detection apparatus according to claim 2, wherein the current display controller (40) is mounted on a driving table of the vehicle.

4. The shaft current detection device according to claim 2, characterized in that the power supply module (30) is provided in a cab of the vehicle.

5. Shaft current detection device according to claim 1, characterized in that the current alarm module (20) comprises:

The current detection piece (21), a first connecting end of the current detection piece (21) forms a first connecting end of the current alarm module (20), and a second connecting end of the current detection piece (21) forms a second connecting end of the current alarm module (20);

The sounding piece (22), the sounding piece (22) is connected with the current detection piece (21) in series, and the alarm signal is a sound signal;

The alarm current is working current of the sounding element (22), and when the current flowing through the current alarm module (20) is greater than or equal to the alarm current, the sounding element (22) works to sound an alarm.

6. The shaft current detection device according to claim 1, characterized in that the shaft current detection device further comprises:

The mounting frame is mounted on a support of the engine and located below the flywheel, and the mounting frame is used 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 comprises:

The protection shell (50) is arranged on a support of the engine, the protection shell (50) is provided with a protection cavity (51), and the current shunt (10) and the current alarm module (20) are arranged in the protection cavity (51).

8. The shaft current detection device according to claim 7, characterized in that the shaft current detection device further comprises:

And the insulating plate (60) is arranged in the protection cavity (51), and the current shunt (10) and the current alarm module (20) are both arranged on the insulating plate (60).

9. The shaft current detection apparatus according to any one of claims 1 to 8, wherein the alarm current is 1A.

10. A vehicle, characterized by comprising:

An electric wheel;

The shaft current detection device according to any one of claims 1 to 9, for detecting a shaft current of the electric wheel.