Grounding system of experiment table and experiment table

Abstract

The utility model discloses a grounding system of an experiment table and the experiment table. The system comprises a magnetic attraction grounding module, a resistance test module and a grounding alarm module. The first end of the magnetic attraction grounding module is grounded, and the second end of the magnetic attraction grounding module is in magnetic attraction fit with the experiment table and is electrically connected with the experiment table; one end of the to-be-experimented equipment is electrically connected with the experiment table, and the other end of the to-be-experimented equipment is grounded; the resistance test module is arranged between equipment to be experimented and the ground, and the grounding alarm module is connected with the resistance test module; and the magnetic attraction grounding module forms a grounding loop with the ground through the experiment table and the to-be-experimented equipment. According to the scheme provided by the embodiment of the utility model, the magnetic attraction grounding module is mechanically connected with the experiment table and electrically connected with the ground in a magnetic attraction matching manner, so that the convenience of the electric connection between the experiment table and the ground is improved. The resistance test module tests the grounding resistance of the grounding loop, and the grounding alarm module sends out an alarm signal when the contact is poor so as to prompt an experimenter to stop an experiment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of locomotive equipment experiment, especially relates to a grounding system of experiment table and experiment table. BACKGROUND

[0002] At present, many locomotive components electric components, such as traction motor, component motor, ventilator etc. need to do comprehensive experiment after being overhauled in each railway bureau section, when doing comprehensive experiment, these components need to be placed on specific support, then experiment line is connected to equipment to carry out experiment, often specific grounding wire is needed for experiment support and equipment to prevent equipment damage or electric shock experiment personnel, ordinary ground wire needs experiment personnel to draw out two ground wires from grounding point and connect on experiment equipment and experiment support grounding screw cap, after being fastened by wrench, experiment begins, often due to personnel negligence and omission, cause poor grounding, lead to experiment personnel electric shock and experiment equipment damage. UTILITY MODEL CONTENTS

[0003] The utility model provides a grounding system of experiment table and experiment table to improve the convenience of grounding when experiment is carried out on experiment table.

[0004] According to an aspect of the utility model, a grounding system of experiment table is provided, which comprises: a magnetic attraction grounding module, a resistance test module and a grounding alarm module.

[0005] The first end of the magnetic attraction grounding module is grounded, and the second end of the magnetic attraction grounding module is magnetically attracted to the experiment table and forms an electrical connection.

[0006] One end of the experimental equipment is electrically connected to the experiment table, and the other end of the experimental equipment is grounded. The resistance test module is arranged between the experimental equipment and the ground, and the grounding alarm module is connected to the resistance test module.

[0007] The magnetic attraction grounding module forms a grounding loop between the experiment table and the experimental equipment and the ground.

[0008] Optionally, the experiment table comprises a suction cup, and the suction cup is arranged on the surface of the experiment table.

[0009] Optionally, the magnetic attraction grounding module comprises a magnetic attraction connector and a grounding wire.

[0010] The magnetic attraction connector is electrically connected to the grounding wire, and the magnetic attraction connector is magnetically attracted to the suction cup by magnetic attraction force and forms an electrical connection with the experiment table.

[0011] Optionally, the experimental equipment is grounded by a wire.

[0012] The resistance testing module is connected with the wire; and the resistance testing module is used for testing the grounding resistance of the grounding loop.

[0013] Optionally, the resistance testing module comprises a clamp type grounding resistance tester.

[0014] Optionally, one end of the grounding alarm module is connected with the resistance testing module, and the other end of the grounding alarm module is connected with the experiment table; and the grounding alarm module is used for sending an alarm signal when the grounding resistance is greater than a preset resistance value.

[0015] Optionally, the experiment table is controlled to stop the experiment when the grounding alarm module sends the alarm signal.

[0016] Optionally, the suction cup is arranged on the surface of the experiment table support.

[0017] Optionally, the suction cup comprises a magnetic suction cup.

[0018] In another aspect, the utility model also provides a test bench, adopts the grounding system of any one of the utility model embodiment experiment table to ground.

[0019] The technical scheme provided by the utility model embodiment, through the magnetic attraction cooperation mode, when the mechanical connection between the magnetic attraction grounding module and the experiment table is guaranteed, the experiment table is grounded through the magnetic attraction grounding module, the convenience of the direct electrical connection between the experiment table and the ground is improved. Meanwhile, the resistance testing module can test the grounding resistance of the grounding loop, when the grounding resistance cannot ensure the reliability of the entire grounding loop, the grounding alarm module sends an alarm, thereby improving the reliability of the grounding loop.

[0020] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the utility model, nor is it used to limit the scope of the utility model. Other features of the utility model will become easy to understand through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the utility model embodiment, the drawings needed to be used in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creating labor under the premise of the drawings.

[0022] Figure 1 It is a structure schematic view of the grounding system of the experiment table provided by the utility model embodiment;

[0023] Figure 2 It is another structure schematic view of the grounding system of the experiment table provided by the utility model embodiment. DETAILED DESCRIPTION

[0024] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0025] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0026] Figure 1 A structural schematic diagram of a grounding system of an experiment table is provided for the embodiments of the present application. Referring to Figure 1 The grounding system of the experiment table comprises a magnetic grounding module 100, a resistance test module 200 and a grounding alarm module 300; a first end of the magnetic grounding module 100 is grounded GND, a second end of the magnetic grounding module 100 is magnetically attracted to the experiment table A and forms an electrical connection; one end of the to-be-tested equipment B is electrically connected to the experiment table A, and the other end of the to-be-tested equipment B is grounded GND; the resistance test module 200 is arranged between the to-be-tested equipment B and the ground GND, the grounding alarm module 300 is connected to the resistance test module 200; the magnetic grounding module 100 forms a grounding loop through the experiment table A and the to-be-tested equipment B and the ground GND.

[0027] Specifically, the experiment table A is a comprehensive experiment table for performing various tests and maintenance experiments on the to-be-tested equipment B. The to-be-tested equipment B can be an electric component of a railway locomotive, such as a traction motor, a stepping motor, and a ventilator. The first end of the magnetic grounding module 100 can be fixedly connected with the ground GND, so as to ensure the reliability of the connection between the first end of the magnetic grounding module 100 and the ground GND. The second end of the magnetic grounding module 100 can be detachably connected with the experiment table A in a magnetic attraction manner. When connected, the second end of the magnetic grounding module 100 can be mechanically connected with the experiment table A through magnetic attraction force, and an electrical connection is formed between the experiment table A and the magnetic grounding module 100, that is, the experiment table A is grounded through the magnetic grounding module 100. When disconnected, the experimenter can use force to make the second end of the magnetic grounding module 100 break away from the magnetic attraction force, so as to disconnect the mechanical connection between the experiment table A and the magnetic grounding module 100, and at the same time, the electrical connection between the experiment table A and the ground GND is disconnected. When the outer surface of the to-be-tested equipment B is a metal material, the to-be-tested equipment B can be directly placed on the experiment table A, so as to ensure that the to-be-tested equipment B is electrically connected with the experiment table A. When the outer surface of the to-be-tested equipment B is a non-metal material, the to-be-tested equipment B can be connected with the experiment table A through a wire. For example, as shown in Figure 1 the outer surface of the to-be-tested equipment B is a non-metal material, and the to-be-tested equipment B is electrically connected with the experiment table A through a wire. The to-be-tested equipment B is also provided with a grounding port, which can be electrically connected with the ground GND through a connecting wire, so as to form a grounding loop among the magnetic grounding module 100, the experiment table A, the to-be-tested equipment B, and the ground GND. The resistance test module 200 can be arranged on the connecting wire between the grounding port of the to-be-tested equipment B and the ground GND, and is used for testing the grounding resistance of the entire grounding loop, so as to ensure the reliability of the entire grounding loop. The resistance test module 200 is also in communication connection with the grounding alarm module 300. When the grounding resistance value tested by the resistance test module 200 cannot ensure the reliability of the grounding loop, the grounding alarm module 300 sends an alarm to prompt the experimenter to stop the experiment in time, so as to avoid the experimenter and the to-be-tested equipment B from being hurt.

[0028] The technical scheme provided by the embodiment of the utility model, through the magnetic attraction manner, the magnetic grounding module and the experiment table are mechanically connected, and the experiment table is grounded through the magnetic grounding module. Compared with the traditional screw fastening grounding wire, the grounding installation time is saved, and the convenience of the electrical connection between the experiment table and the ground is significantly improved. Meanwhile, the resistance test module can test the grounding resistance of the grounding loop, and the grounding alarm module sends an alarm signal when the grounding resistance is unreliable, so as to improve the reliability of the grounding loop.

[0029] Optionally, Figure 2Another structural schematic diagram of the grounding system of the experiment table is provided in the embodiments of the present application. Based on the above-mentioned embodiments, refer to Figure 2 . The experiment table A comprises a suction cup a arranged on the surface of the experiment table A.

[0030] Specifically, the suction cup a is the position where the second end of the magnetic suction grounding module 100 is magnetically connected with the experiment table A. When connected, the second end of the magnetic suction grounding module 100 only needs to be close to the suction cup a, and then the second end of the magnetic suction grounding module 100 is connected with the suction cup a by magnetic adsorption force. The outer surface of the experiment table A and the material of the suction cup a can be conductive material, so that when the second end of the magnetic suction grounding module 100 is connected with the suction cup a, the surface of the experiment table A is electrically connected between the magnetic suction grounding module 100 and the ground GND. The outer surface of the experiment table A being conductive material can also ensure that when the outer surface of the experimental equipment B is conductive material, the experimental equipment B is placed on the experiment table A, and then the electrical connection between the experimental equipment B and the experiment table A is ensured. Exemplarily, as shown in Figure 2 , the outer surface of the experiment table A and the outer surface of the experimental equipment B are both conductive material, and the experimental equipment B is placed on the table top of the experiment table A, so that the electrical connection between the experiment table A and the experimental equipment B is ensured.

[0031] Optionally, based on the above-mentioned embodiments, refer to Figure 2 . The magnetic suction grounding module 100 comprises a magnetic suction connector 110 and a grounding wire 120; the magnetic suction connector 110 is electrically connected with the grounding wire 120, and the magnetic suction connector 110 is magnetically connected with the suction cup a by magnetic adsorption force, and forms electrical connection with the experiment table A.

[0032] Specifically, one end of the grounding wire 120 is fixedly connected with the ground GND to ensure the reliability of the connection between the first end of the magnetic suction grounding module 100 and the ground GND. The other end of the grounding wire 120 is connected with the magnetic suction connector 110. The magnetic suction connector 110 can be a metal connector with magnetism. When the magnetic suction connector 110 is close to the suction cup a, the magnetic suction connector 110 is connected with the suction cup a by magnetic adsorption force, so that the experiment table A forms electrical connection with the ground GND through the magnetic suction connector 110 and the grounding wire 120. The magnetic suction connector 110 can be in a cylindrical structure, so as to increase the contact area between the magnetic suction connector 110 and the suction cup a when adsorbed, and further improve the reliability of the electrical connection between the experiment table A and the ground GND through the magnetic suction grounding module 100.

[0033] Optionally, based on the above-mentioned embodiments, refer to Figure 1 and Figure 2 . The experimental equipment B is grounded through a wire, and the resistance test module 200 is connected with the wire; the resistance test module 200 is used for testing the grounding resistance of the grounding loop.

[0034] Specifically, after the to-be-tested equipment B is connected to the experiment table A, the to-be-tested equipment B needs to be grounded, so as to form a complete grounding loop among the magnetic attraction grounding module 100, the experiment table A, the to-be-tested equipment B and the ground GND. The to-be-tested equipment B is provided with a grounding port for experiments, and the grounding port of the to-be-tested equipment B can be connected to the ground GND through a wire, so as to ensure the connection between the to-be-tested equipment B and the ground GND. The resistance test module 200 can be connected to the wire between the to-be-tested equipment B and the ground GND, or can be connected to the grounding wire 120 between the experiment table A and the ground GND. The resistance test module 200 can be a clamp-type grounding resistance tester. When testing the grounding resistance, the clamp-type grounding resistance tester does not need to interrupt the grounding loop, and as long as the measured wire is inserted into the clamp head of the clamp-type grounding resistance tester, the grounding resistance of the grounding loop can be quickly measured, thereby improving the convenience and accuracy of the grounding resistance measurement.

[0035] Optionally, on the basis of the above embodiment, continuing to refer to Figure 1 and Figure 2 . One end of the grounding alarm module 300 is connected to the resistance test module 200, and the other end of the grounding alarm module is connected to the experiment table A; the grounding alarm module 300 is used to issue an alarm signal when the grounding resistance is greater than a preset resistance value.

[0036] Specifically, the grounding alarm module 300 can be a microcontroller, and the grounding alarm module 300 stores a preset resistance value. One end of the grounding alarm module 300 is connected to the resistance test module 200, so as to obtain the grounding resistance value measured by the resistance test module 200. The grounding alarm module 300 compares the obtained grounding resistance value with the preset resistance value stored in itself. When the grounding resistance is greater than the preset resistance value, it indicates that the grounding loop has a poor grounding and has a certain safety hazard, and the grounding alarm module 300 issues an alarm signal to prompt the experimenter. The alarm signal can be one or more of a sound alarm signal, a light alarm signal and a display alarm signal.

[0037] Optionally, on the basis of the above embodiment, continuing to refer to Figure 1 and Figure 2 . The grounding alarm module 300 stops the experiment of the experiment table A when issuing the alarm signal.

[0038] Specifically, the other end of the grounding alarm module 300 can be communicatively connected with the experiment table A, thereby forming interconnection control with the experiment table A. When the grounding resistance is greater than the preset resistance value, the grounding alarm module 300 sends an alarm signal to control the experiment table A to stop the experiment, thereby protecting the experimental equipment B and the experimental personnel from being hurt. Exemplarily, the alarm signal can cut off the power supply of the experiment table A, thereby stopping the experiment table A from performing the experiment. When the grounding loop is poor, the experimental personnel can readjust the wire between the experimental equipment B and the ground GND or the grounding wire 120 between the experiment table A and the ground GND, so that the grounding resistance is less than or equal to the preset resistance value, thereby continuing the experiment.

[0039] Optionally, on the basis of the above embodiment, continuing to refer to Figure 1 and Figure 2 The suction cup a is arranged on the surface of the experiment table support A1.

[0040] Specifically, the experiment table support A1 can be a support structure of the table top of the experiment table A. The surface of the experiment table support A1 is in communication with the table top of the experiment table A. Exemplarily, as shown in Figure 2 , the experiment table A is provided with four experiment table supports A1, and the suction cup a can be arranged on any one of the experiment table supports A1. Arranging the suction cup a on the experiment table support A1 can facilitate the connection of the magnetic joint 110 and the suction cup a, and meanwhile does not affect the experiment on the table top of the experiment table A. The suction cup a can also be arranged at one end of the experiment table support A1 close to the ground, so as to avoid the magnetic joint 110 from being accidentally separated from the suction cup a due to vibration or other external force of the experiment table A.

[0041] Optionally, on the basis of the above embodiment, continuing to refer to Figure 1 and Figure 2 The suction cup a comprises a magnetic suction cup.

[0042] Specifically, the suction cup a can be made of a magnetic metal material. The magnetic metal material can be one of iron, cobalt, nickel, and rubidium, for example. The suction cup a can also be made of other alloy materials. The alloy can be doped with a magnetic metal material and other materials. The suction cup a made of the alloy material not only has good magnetic adsorption force, but also has certain hardness and corrosion resistance; the service life of the suction cup a can be improved while ensuring electrical connection.

[0043] The utility model also provides an experiment table which adopts the grounding system of any one of the experiment tables of the embodiments of the utility model to ground, has the same technical effect as the grounding system of the experiment table provided in any one of the above embodiments, and details are not repeated here.

[0044] It should be understood that the various forms of flow shown above can be used to reorder, add or delete steps. For example, the steps described in the present application can be executed in parallel, sequentially or in a different order, as long as the desired results of the technical solutions of the present application can be achieved, which is not limited herein.

[0045] The above specific embodiments do not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A grounding system for a laboratory bench, characterized in that, The application relates to a grounding system of an experimental table. The grounding system comprises a magnetic grounding module, a resistance testing module and a grounding alarm module. The first end of the magnetic grounding module is grounded, and the second end of the magnetic grounding module is magnetically matched with an experimental table and forms an electrical connection. One end of a to-be-tested device is electrically connected with the experimental table, and the other end of the to-be-tested device is grounded. The resistance testing module is arranged between the to-be-tested device and the ground.

2. The grounding system for a test bench of claim 1, wherein, The magnetic grounding module forms a grounding loop between the experimental table and the to-be-tested device and the ground.

3. The grounding system for a test bench of claim 2, wherein, The experimental table comprises a suction cup arranged on the surface of the experimental table. The magnetic grounding module comprises a magnetic connector and a grounding wire.

4. The grounding system for a test bench of claim 1, wherein, The magnetic connector is electrically connected with the grounding wire, and the magnetic connector is magnetically connected with the suction cup through magnetic attraction and forms an electrical connection with the experimental table. The to-be-tested device is grounded through a wire.

5. The grounding system for a test bench of claim 4, wherein, The resistance testing module is connected with the wire.

6. The grounding system for a test bench of claim 4, wherein, The resistance testing module is used for testing the grounding resistance of the grounding loop.

7. The grounding system for a test bench of claim 6, wherein, The resistance testing module comprises a clamp-type grounding resistance tester.

8. The grounding system for a laboratory bench of claim 2, wherein, One end of the grounding alarm module is connected with the resistance testing module, and the other end of the grounding alarm module is connected with the experimental table.

9. The grounding system for a laboratory bench of claim 2, wherein, The grounding alarm module is used for sending an alarm signal when the grounding resistance is greater than a preset resistance value.

10. A laboratory bench, characterized in that, The experimental table stops the experiment when the grounding alarm module sends the alarm signal. The suction cup is arranged on the surface of the experimental table support. The suction cup comprises a magnetic suction cup. The grounding system of the experimental table is used for grounding.

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