A portable current measuring device for a switch machine

Abstract

The utility model relates to railway signal equipment detection technical field, specifically disclose a portable current measuring device for switch machine, its characterized in that, include: working tank, ammeter, arc extinguishing switch and connector, the ammeter the arc extinguishing switch and the connector all install on the working tank, and the connector is equipped with two connecting wires, two the connecting wire is connected with switch machine, the ammeter the arc extinguishing switch and the connector all are connected with each other through wire. The utility model discloses a portable current measuring device for switch machine, through the reasonable combination and the collaborative work of working tank, ammeter, arc extinguishing switch and connector, has brought the remarkable beneficial effect in guaranteeing measurement accuracy, the promotion operation safety, the enhancement equipment portability and the prolongation equipment service life etc.

Description

Technical Field

[0001] This utility model relates to the field of railway signal equipment testing technology, specifically a portable current measuring device for switch machines. Background Technology

[0002] Switch machines are key equipment in railway turnout switching systems, and their operating status directly affects the safety and efficiency of railway operations. Current is one of the important parameters reflecting the operating status of a switch machine. By measuring the operating current of the switch machine, it is possible to determine whether the start-up, operation, and switching processes are normal, and to promptly identify potential faults.

[0003] The ZD6 switch machine, a widely used turnout switching device in railway systems, faces several pressing issues in its current measurement process. In existing ZD6 switch machine maintenance procedures, when manually disconnecting the current, the circuit current is typically too high (greater than 2A), easily causing arcing at the connection points.

[0004] Arcing occurs when the circuit is broken, and the voltage and current between the contacts are high, causing the air to ionize and form an electric arc. This arc has extremely high temperatures, reaching thousands of degrees Celsius or even higher. Under such high temperatures, safety contacts or ammeter probe leads will quickly be burned and blackened.

[0005] Therefore, developing a portable, reliable switch machine current measuring device with good protection performance is of great practical significance. Utility Model Content

[0006] In order to overcome the problems existing in the prior art, the purpose of this utility model is to provide a portable current measuring device for switch machines.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a portable current measuring device for a switch machine, characterized in that it includes: a working box, an electric meter, an arc-extinguishing switch, and a connector; the electric meter, the arc-extinguishing switch, and the connector are all installed on the working box, and the connector is provided with two connecting wires, which are connected to the switch machine; the electric meter, the arc-extinguishing switch, and the connector are all interconnected by wires.

[0008] Main working principle: This portable current measuring device for switch machines includes a work box, a meter, an arc-extinguishing switch, and connectors. These components work together to achieve safe and accurate measurement of the switch machine's operating current. The work box serves as the carrier of the entire device, providing a stable mounting position and necessary protection for the meter, arc-extinguishing switch, and connectors. The meter, arc-extinguishing switch, and connectors are all mounted on the work box and interconnected by wires to form a complete current measuring circuit. The connectors have two connecting wires specifically designed for connecting to the switch machine, thereby introducing the switch machine's operating current into the measuring device.

[0009] When it is necessary to measure the operating current of the switch machine, first reliably connect the two connecting wires on the connector to the corresponding circuit terminals of the switch machine. At this time, the current generated by the switch machine during normal operation will flow into the connector through these two connecting wires. The connector acts as a bridge, smoothly guiding the current of the switch machine into the internal circuit of the measuring device, preparing for subsequent measurements.

[0010] After the current is introduced into the connector, it is not immediately connected to the meter for measurement. Instead, the arc-extinguishing switch is first operated to close it. The arc-extinguishing switch has an arc-extinguishing structure, which is its key function. During the operation of the switch machine, its circuit current may sometimes exceed 2A. When the circuit is connected or disconnected, if there is a large current, arcing can easily occur at the connection point. The high temperature generated by arcing can reach thousands of degrees Celsius, which can seriously damage the components in the circuit, such as burning safety contacts or ammeter probes, affecting the normal operation and lifespan of the equipment. The arc-extinguishing switch can quickly cut off the circuit during the closing and opening process, and its arc-extinguishing structure can quickly extinguish any possible arc, effectively preventing arcing. In this device, when the arc-extinguishing switch is closed, it provides a safe and stable path for the current, allowing the current to flow smoothly from the connector to the meter, while avoiding damage to the internal components of the device caused by arcing that may occur when the circuit is connected.

[0011] Once the arc-extinguishing switch successfully closes and the current safely flows through it into the meter, the meter begins its measuring function. The meter is a precisely calibrated and designed measuring instrument that converts the current magnitude into a clearly readable numerical value. Through the meter's display, operators can accurately obtain the current value of the switch machine. This value is of significant reference value for assessing the switch machine's operating status, determining the presence of faults, and conducting subsequent maintenance and repair work.

[0012] After measuring the operating current of the switch machine, it is necessary to safely disconnect the measuring device from the switch machine. At this point, first operate the arc-extinguishing switch to the open position. During the disconnection process, the arc-extinguishing switch again performs its arc-extinguishing function to prevent arcing when interrupting a large current, protecting components such as connectors and meters from damage. After the arc-extinguishing switch is completely open and it is confirmed that no current flows through the circuit, disconnect the two connecting wires from the switch machine to complete the entire measurement process.

[0013] In summary, this portable current measuring device for switch machines provides a stable foundation through the work box, introduces current through connectors, ensures safety when the circuit is connected and disconnected through the arc-extinguishing switch, and enables accurate current measurement through the meter. The cooperation of all components enables safe, reliable, and accurate measurement of the operating current of the switch machine.

[0014] Preferably, the connector includes a plug, a socket, and a sealing ring. The socket is connected to the work box, the sealing ring fits into the inner cavity of the socket, and the plug is inserted into the socket to press and fix the sealing ring.

[0015] Preferably, the work box includes a box body and a cover body. The cover body is fastened to the opening of the box body. The four end corners of the box body are provided with threaded posts, and the four end corners of the cover body are provided with screw holes. The four threaded posts and the four screw holes cooperate with each other.

[0016] Preferably, a sealing strip is also included, and a retaining plate is provided at the edge of the box or the cover. The sealing strip is attached to the surface of the retaining plate, and the sealing strip is pressed tightly when the cover is fastened to the working box.

[0017] Preferably, the thickness of the work box is not less than 2mm, and the work box is made of high-strength engineering plastic material.

[0018] Preferably, the work box is rectangular and all its corners are rounded.

[0019] Preferably, the work box is provided with handles on both sides.

[0020] Preferably, the gloves are provided with a non-slip rubber sleeve.

[0021] Preferably, the work box is equipped with shock-absorbing pads, which are made of polyurethane foam and are evenly distributed on the bottom and sides of the work box.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] This utility model, through the portable current measuring device for switch machines, achieves significant benefits in several aspects, including ensuring measurement accuracy, improving operational safety, enhancing equipment portability, and extending equipment lifespan, through the reasonable combination and coordinated operation of the work box, meter, arc extinguishing switch, and connectors.

[0024] The work box provides a stable installation space for key components such as meters, arc-extinguishing switches, and connectors, effectively reducing interference from external environmental factors (such as vibration, dust, and humidity) on the measuring device. In railway field environments, switch machines typically operate under complex conditions. The protective function of the work box ensures that measuring elements such as meters remain in a stable working state, thereby guaranteeing the accuracy and reliability of measured current values. This provides a strong basis for railway signal equipment maintenance personnel to accurately determine the working status of the switch machine.

[0025] The arc-extinguishing switch is a core component of this device, ensuring operational safety. During the operation of the switch machine, the circuit current may sometimes exceed 2A. When the circuit is connected or disconnected, arcing can easily occur at the contact points. The high temperature generated by arcing can reach thousands of degrees Celsius, causing serious damage to components in the circuit and even leading to safety accidents. The arc-extinguishing switch has a special arc-extinguishing structure that can quickly cut off the current and extinguish any potential arcs at the moment the circuit is connected or disconnected. This effectively prevents arcing from burning safety contacts, ammeter probes, and other components, avoiding circuit failures and safety hazards caused by component damage, and greatly improving the safety of operators during use. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the portable current measuring device used in switch machines.

[0028] Figure 2 This is an exploded schematic diagram of the portable current measuring device used in switch machines.

[0029] 1. Working box; 10. Box body; 11. Cover; 12. Sealing strip; 2. Electric meter; 3. Arc extinguishing switch; 4. Connector; 40. Plug; 41. Socket; 42. Sealing ring; 5. Handle; 6. Shock-absorbing pad. Detailed Implementation

[0030] To better understand the above-mentioned objectives, features, and advantages of this utility model, it will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this utility model; the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0032] Example 1

[0033] This embodiment discloses a portable current measuring device for a switch machine, such as... Figures 1-2 As shown, the device includes a work box 1, an electric meter 2, an arc-extinguishing switch 3, and a connector 4. These components work together to achieve safe and accurate measurement of the switch machine's operating current. The work box 1 serves as the carrier of the entire device, providing a stable mounting position and necessary protection for the electric meter 2, arc-extinguishing switch 3, and connector 4. The electric meter 2, arc-extinguishing switch 3, and connector 4 are all mounted on the work box 1 and interconnected by wires to form a complete current measurement circuit. Connector 4 has two connecting wires specifically designed for connecting to the switch machine, thereby introducing the switch machine's operating current into the measuring device.

[0034] When it is necessary to measure the operating current of the switch machine, first reliably connect the two connecting wires on connector 4 to the corresponding circuit terminals of the switch machine. At this time, the current generated by the switch machine during normal operation will flow into connector 4 through these two connecting wires. Connector 4 acts as a bridge, smoothly guiding the current of the switch machine into the internal circuit of the measuring device, preparing for subsequent measurements.

[0035] After current is introduced into connector 4, it is not immediately connected to meter 2 for measurement. Instead, arc-extinguishing switch 3 is operated first, closing it. Arc-extinguishing switch 3 has an arc-extinguishing structure, which is its key function. During the operation of the switch machine, its circuit current may sometimes exceed 2A. When the circuit is connected or disconnected, if there is a large current, arcing can easily occur at the connection point. The high temperature generated by arcing can reach thousands of degrees Celsius, causing serious damage to components in the circuit, such as burning safety contacts or ammeter probes, affecting the normal operation and lifespan of the equipment. Arc-extinguishing switch 3 can quickly cut off the circuit during closing and opening, and its arc-extinguishing structure can quickly extinguish any possible arc, effectively preventing arcing. In this device, when arc-extinguishing switch 3 is closed, it provides a safe and stable path for the current, allowing it to flow smoothly from connector 4 to meter 2, while avoiding damage to internal components caused by arcing that may occur when the circuit is connected.

[0036] Once the arc-extinguishing switch 3 successfully closes and the current safely flows through it into meter 2, meter 2 begins its measuring function. Meter 2 is a precisely calibrated and designed measuring instrument that converts the current magnitude into a clearly readable numerical value. Through the display of meter 2, operators can accurately obtain the current value of the switch machine. This value is of significant reference value for assessing the switch machine's operating status, determining the presence of faults, and conducting subsequent maintenance and repair work.

[0037] After measuring the operating current of the switch machine, it is necessary to safely disconnect the measuring device from the switch machine. At this point, first operate the arc-extinguishing switch 3 to put it in the open state. During the disconnection process, the arc-extinguishing switch 3 again performs its arc-extinguishing function to prevent arcing when cutting off a large current, protecting components such as connector 4 and meter 2 from damage. After the arc-extinguishing switch 3 is completely open and it is confirmed that no current flows through the circuit, disconnect the two connecting wires on connector 4 from the switch machine to complete the entire measurement process.

[0038] In summary, the portable current measuring device for switch machines provides a stable foundation through the work box 1, introduces current through the connector 4, ensures safety when the circuit is connected and disconnected through the arc extinguishing switch 3, and realizes accurate current measurement through the meter 2. The components work together to achieve safe, reliable and accurate measurement of the working current of the switch machine.

[0039] In some optional embodiments, connector 4 consists of a plug 40, a socket 41, and a sealing ring 42. The socket 41 connects to the work box 1, providing a fixed interface for current transmission. The sealing ring 42 fits into the inner cavity of the socket 41, providing a seal to prevent dust, moisture, etc., from entering the socket 41 and protecting the internal electrical connections from environmental factors. When the plug 40 is inserted into the socket 41, it presses and secures the sealing ring 42, further enhancing the sealing effect and ensuring a stable and reliable connection between connector 4 and the work box 1 under various harsh environments, preventing interference with current transmission and extending the service life of connector 4.

[0040] In some optional embodiments, the work box 1 includes a box body 10 and a cover 11, with the cover 11 fastened to the opening of the box body 10 to achieve closure. The box body 10 has threaded posts at its four corners, and the cover 11 has threaded holes at its four corners. The cover 11 can be securely fixed to the box body 10 through the interaction of the threaded posts and threaded holes. This connection method is simple to operate, allowing for quick opening and closing of the work box 1, facilitating the installation, debugging, maintenance, and replacement of internal components such as the meter 2 and the arc-extinguishing switch 3, while ensuring the structural stability of the work box 1 during transport and use.

[0041] In some optional embodiments, a retaining plate is provided at the edge of the housing 10 or cover 11 of the working box 1, and the sealing strip 12 is attached to the surface of the retaining plate. When the cover 11 is fastened to the working box 1, it will press the sealing strip 12 tightly, causing the sealing strip 12 to elastically deform and fill the gap between the cover 11 and the housing 10, forming a good sealing environment. This can effectively prevent dust, moisture and other external substances from entering the interior of the working box 1, protect the internal precision components such as the meter 2 and the arc-extinguishing switch 3 from corrosion and damage, and ensure that the device works normally in the harsh railway site environment.

[0042] In some optional embodiments, the working box 1 is at least 2mm thick and made of high-strength engineering plastic. The thickness of at least 2mm ensures that the working box 1 has sufficient structural strength to withstand certain external impacts and compressions, protecting internal components from damage. The high-strength engineering plastic material has advantages such as light weight, good insulation, corrosion resistance, and aging resistance. It not only meets the usage requirements of the working box 1 in the complex environment of railway sites but also reduces the overall weight of the device, making it easier to carry and operate, while reducing the risk of leakage and ensuring the safety of operators.

[0043] In some optional embodiments, the work box 1 is rectangular in shape. This shape facilitates manufacturing and carrying, and makes efficient use of space, providing a neat installation location for components such as the meter 2 and the arc-extinguishing switch 3. All edges and corners are rounded. On the one hand, this avoids sharp edges causing collision injuries to operators during carrying and handling, improving safety. On the other hand, the rounded corners reduce stress concentration, lowering the risk of the work box 1 breaking under external impact, and enhancing the overall structural strength and durability of the work box 1.

[0044] In some optional embodiments, handles 5 are provided on both sides of the work box 1, providing convenient gripping points for operators. When it is necessary to carry the device to different locations for switch machine current measurement, operators can easily move the work box 1 by holding the handles 5, making the movement of the device more convenient and improving work efficiency. At the same time, the handles 5 also allow operators to better control the position and orientation of the work box 1 during operation, facilitating the connection and disconnection of the connector 4 with the switch machine.

[0045] In some optional embodiments, a non-slip rubber sleeve is fitted onto the handle 5, increasing the friction between the operator's hand and the handle 5. When moving the work box 1 or performing related operations, even if the hands are sweaty or oily, the non-slip rubber sleeve can effectively prevent the handle 5 from slipping, ensuring that the operator can hold the handle 5 stably and preventing the work box 1 from falling and being damaged due to the handle 5 slipping off. This ensures the safe use of the device and also improves the operator's operating comfort and safety.

[0046] In some optional embodiments, the working box 1 is equipped with shock-absorbing pads 6 made of polyurethane foam, which are evenly distributed on the bottom and sides of the working box 1. When the device is subjected to vibration and impact during transportation or use, the shock-absorbing pads 6 can elastically deform to absorb and buffer vibration energy, reducing the impact of vibration on internal precision components such as the meter 2 and the arc-extinguishing switch 3. Polyurethane foam has good shock absorption performance, elasticity, and aging resistance, which can effectively protect internal components from mechanical damage, ensure that the device can work stably and reliably in various complex environments, and extend the service life of the device.

[0047] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A portable current measuring device for a switch machine, characterized in that, include: The equipment includes a work box, an electric meter, an arc-extinguishing switch, and connectors. The electric meter, the arc-extinguishing switch, and the connectors are all mounted on the work box. Each connector has two connecting wires that are connected to the switch machine. The electric meter, the arc-extinguishing switch, and the connectors are all interconnected via wires.

2. The portable current measuring device for a switch machine according to claim 1, characterized in that, The connector includes a plug, a socket, and a sealing ring. The socket is connected to the work box, the sealing ring fits into the inner cavity of the socket, and the plug is inserted into the socket to press and fix the sealing ring.

3. The portable current measuring device for a switch machine according to claim 1, characterized in that, The work box includes a box body and a cover. The cover is fastened to the opening of the box body. The four corners of the box body are provided with threaded posts, and the four corners of the cover are provided with screw holes. The four threaded posts and the four screw holes cooperate with each other.

4. The portable current measuring device for a switch machine according to claim 3, characterized in that, It also includes a sealing strip, and a locking platform is provided at the edge of the box or the cover. The sealing strip is attached to the surface of the locking platform, and the sealing strip is pressed and fitted when the cover is fastened to the working box.

5. The portable current measuring device for a switch machine according to claim 1, characterized in that, The thickness of the work box is not less than 2mm, and the work box is made of high-strength engineering plastic material.

6. The portable current measuring device for a switch machine according to claim 1, characterized in that, The work box is rectangular, and all its corners are rounded.

7. The portable current measuring device for a switch machine according to claim 1, characterized in that, The work box has handles on both sides.

8. The portable current measuring device for a switch machine according to claim 7, characterized in that, The gloves are equipped with non-slip rubber sleeves.

9. The portable current measuring device for a switch machine according to claim 1, characterized in that, The work box is equipped with shock-absorbing pads made of polyurethane foam, which are evenly distributed on the bottom and sides of the work box.

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