A control device and control box for driving a switch cabinet trolley chassis

Abstract

An embodiment of the present invention relates to a control device and a control box for driving a switch cabinet trolley chassis, comprising a drive circuit, wherein the drive circuit includes an interlocking circuit, a control module, a conversion device, a motor and a locking relay. The locking relay is used to realize effective control of the power supply to the driving trolley chassis motor, thereby ensuring that the switch cabinet with the energized trolley chassis does not malfunction; the locking relay provided on the drive circuit only provides power to the motor when the locking relay is in operation, so that the control module of the switch cabinet trolley chassis can be replaced with power, thereby ensuring the reliability of power supply to important loads; when the interlocking circuit is in working state and the coil of the locking relay is not energized, it is ensured that the chassis motor is not energized when the circuit breaker of the interlocking circuit of the switch cabinet is in the closed position and the equipment is in the operating state, thereby avoiding malfunction of the secondary components of the control module of the trolley chassis due to internal circuit failure during long-term operation.

Description

Technical Field

[0001] The present invention relates to the technical field of switch cabinet trolley driving, and in particular to a control device and a control box for driving a switch cabinet trolley chassis. Background Art

[0002] With the rapid development of the national economy, demands for power supply reliability are steadily increasing. To ensure this, the power system's main and distribution network OMS (Operational Management System) has been deepened in application and its service intelligence has been continuously enhanced, with programmed operations now being routinely promoted. Requirements for switchgear carts are also becoming increasingly stringent. To meet the current standards for technical renovations and new substation construction, the switchgear cart chassis control power supply requires long-term operation to ensure normal operation. Due to the lifespan of electronic components, the normal service life of secondary components in switchgear carts is approximately 10 years. The "Southern Power Grid General Technical Specifications for Relay Protection" stipulates a design service life of 12 years, while the normal service life of switchgear substation primary equipment is generally 25 to 30 years. In actual field operations, secondary components in the switchgear cart chassis control module, due to long operating life and poor anti-interference performance, have caused internal circuit failures, leading to misoperation of the cart chassis, impacting the safe and stable operation of equipment within the switchgear. Existing switchgear cart chassis control modules have a complex structure and share common power and weak current boards within their internal structure. This leads to mutual interference between circuits within the switchgear cart control module, resulting in poor anti-interference performance. Summary of the Invention

[0003] The embodiment of the present invention provides a control device and a control box for driving a switchgear trolley chassis, which are used to solve the technical problems of the secondary components of the existing switchgear trolley chassis control module being charged during long-term operation and having poor anti-interference performance.

[0004] In order to achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0005] A control device for driving a switchgear trolley chassis includes a drive circuit for driving the trolley chassis, the drive circuit includes an interlocking circuit, a control module, a conversion device connected to the control module, and a motor. The control device for driving the switchgear trolley chassis also includes a locking relay, a first end of the locking relay coil is connected to the conversion device, a second end of the locking relay coil is connected to the control module, a first end of the locking relay normally open contact is connected to the control module, and a second end of the locking relay normally open contact is connected to the motor.

[0006] Preferably, the interlock circuit further includes a starting switch, a normally closed switch and a starting relay; the starting relay is connected to the normally closed switch, the normally closed switch is connected to the starting switch, and the starting switch is respectively connected to the first end of the conversion device and the locking relay coil.

[0007] Preferably, the motor is used to drive the switch cabinet trolley chassis to operate.

[0008] The present invention further provides a control box for driving a switchgear trolley chassis, comprising a control box body having an inner cavity, a box cover covering the control box body, and a control panel built into the control box body, wherein the control panel comprises a main control indicator panel and a drive panel, the main control indicator panel being located above the drive panel and mounted in the inner cavity of the control box body, and the control device for driving the switchgear trolley chassis described above being provided on the control panel;

[0009] The control module of the control device for driving the switchgear trolley chassis is arranged on the main control indicator board, and the interlocking circuit and the locking relay of the control device for driving the switchgear trolley chassis are both arranged on the driving board.

[0010] Preferably, the control box body and the box cover are both made of aluminum alloy, and the four corners of the control box body are provided with mounting connection holes, corresponding to the mounting connection holes, which are opened on the box cover. Fasteners are inserted through the mounting holes to close the box cover on the control box body, and the inner cavity of the control box body is formed into a closed space.

[0011] Preferably, countersunk holes for installing the control board are provided at the four corners of the bottom end surface of the inner cavity of the control box body. Corresponding to the countersunk holes, connecting holes are provided on the main control indicator board and the drive board. The connecting columns pass through the connecting holes of the main control indicator board and the drive board in turn and are inserted into the countersunk holes to install the control board in the inner cavity of the control box body.

[0012] Preferably, grooves are provided on both sides of the main control indicator panel.

[0013] Preferably, elastic fasteners are provided on the outer wall surface of the control box body, and the elastic fasteners are provided on both sides of the control box body.

[0014] Preferably, the control box for driving the switch cabinet trolley chassis further comprises pluggable terminals, and the pluggable terminals are installed on the driving board through the bottom end surface of the control box body.

[0015] Preferably, the main control indicator panel is provided with a display device and a button device, and corresponding to the display device and the button device, a through hole is opened on the box cover, and the display device and the button device are exposed from the top surface of the box cover through the through hole.

[0016] It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

[0017] 1. The control device for driving the switch cabinet trolley chassis realizes effective control of the power supply to the driving trolley chassis motor through the locking relay, ensuring that the switch cabinet with the energized trolley chassis does not malfunction; the locking relay arranged on the driving circuit only provides power to the motor when the locking relay is in operation, so that the control module of the switch cabinet trolley chassis can be replaced with power, and the equipment in operation of the switch cabinet can be completed with the transformation without power outage, ensuring the reliability of power supply to important loads; when the interlocking circuit is in the working state and the coil of the locking relay is not energized, it is ensured that the chassis motor is not energized when the circuit breaker of the interlocking circuit of the switch cabinet is in the closed position and the equipment is in the operating state, avoiding malfunction of the secondary components of the trolley chassis control module due to internal circuit failure during long-term operation, and solving the technical problem that the secondary components of the existing switch cabinet trolley chassis control module are energized during long-term operation and have poor anti-interference performance.

[0018] 2. The control box of the switchgear trolley chassis adopts an independent design of the drive board and the main control indicator board, which avoids interference on the internal circuit of the control module in the control board and reduces the risk of internal failure of the control module. It also facilitates equipment maintenance and greatly improves operating efficiency. It solves the technical problem of the secondary components of the existing switchgear trolley chassis control module being energized during long-term operation and having poor anti-interference performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is an electrical schematic diagram of the control device for driving the switchgear trolley chassis according to an embodiment of the present invention.

[0021] Figure 2 This is a three-dimensional structural diagram of the control box for driving the switchgear trolley chassis according to an embodiment of the present invention.

[0022] Figure 3 This is a partial exploded structural diagram of the control box that drives the switchgear trolley chassis according to an embodiment of the present invention.

[0023] Figure 4 This is a structural diagram of the control box body of the control box that drives the switch cabinet trolley chassis according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] The embodiments of the present application provide a control device and a control box for driving a switchgear trolley chassis, which are used to solve the technical problems of the secondary components of the existing switchgear trolley chassis control module being energized during long-term operation and having poor anti-interference performance.

[0026] Example 1:

[0027] Figure 1 This is an electrical schematic diagram of the control device for driving the switchgear trolley chassis according to an embodiment of the present invention.

[0028] like Figure 1 As shown, an embodiment of the present invention provides a control device for driving a switchgear trolley chassis, including a drive circuit for driving the trolley chassis, the drive circuit including an interlocking circuit, a control module B1, a conversion device SS connected to the control module B1, and a motor MT. The control device for driving the switchgear trolley chassis also includes a locking relay KA, a first end of the locking relay KA coil is connected to the conversion device SS, a second end of the locking relay KA coil is connected to the control module B1, a first end of the locking relay KA normally open contact is connected to the control module B1, and a second end of the locking relay KA normally open contact is connected to the motor MT.

[0029] It should be noted that the first terminal A1 of the latching relay KA coil is connected to the 7th terminal of the switching device SS-33, the second terminal A2 of the latching relay KA coil is connected to the 6th and 8th terminals of the control module B1, the first terminal 13 of the normally open contact of the latching relay KA is connected to the 10th terminal of the control module B1, the second terminal 14 of the normally open contact of the latching relay KA is connected to the 32nd terminal of the motor MT, and the 42nd terminal of the motor MT is connected to the 9th terminal of the control module B1. The switching device SS is mainly used to switch the driving path of the trolley chassis.

[0030] In the embodiment of the present invention, the motor MT is mainly used to drive the switch cabinet trolley chassis to operate.

[0031] In this embodiment of the present invention, the latching relay KA is activated, and the contacts of the latching relay KA, which controls the operation of the motor MT that moves the switchgear trolley chassis, are closed. The output voltage 220V of the control module B1 is then supplied to the motor MT, which is energized and drives the switchgear trolley chassis. When the latching relay KA is deactivated, the control module B1 is disconnected from the power supply to the motor MT, effectively preventing malfunctions caused by a malfunction of the switchgear trolley electric operation module.

[0032] It should be noted that the control module B1 is preferably an AR50 model control module.

[0033] In the embodiment of the present invention, the interlock circuit is mainly used to start the drive circuit so that the drive circuit satisfies electric operation.

[0034] The present invention provides a control device for driving a switch cabinet trolley chassis, which realizes effective control of the power supply to the driving trolley chassis motor through a locking relay, thereby ensuring that the switch cabinet with the energized trolley chassis does not malfunction; the locking relay arranged on the driving circuit can provide power to the motor only when the locking relay is in operation, so that the control module of the switch cabinet trolley chassis can be replaced with power, and the equipment in operation of the switch cabinet can be modified without power outage, thereby ensuring the reliability of power supply to important loads; when the interlocking circuit is in working state and the coil of the locking relay is not energized, it is ensured that the chassis motor is not energized when the circuit breaker of the interlocking circuit of the switch cabinet is in the closed position and the equipment is in the operating state, thereby avoiding malfunction of the secondary components of the trolley chassis control module due to internal circuit failure during long-term operation, and solving the technical problem that the secondary components of the existing switch cabinet trolley chassis control module are energized during long-term operation and have poor anti-interference performance.

[0035] It should be noted that the control device for driving the switch cabinet trolley chassis in this embodiment sets a locking relay in the control module to power the motor, and starts the locking relay when the interlocking circuit meets the conditions for electric operation, so that the circuit for powering the motor can be connected, thereby realizing the operation control of the switch cabinet trolley chassis.

[0036] In one embodiment of the present invention, the interlocking circuit further includes a starting switch B0B1, a normally closed switch BB2 and a starting relay KA4; the starting relay KA4 is connected to the normally closed switch BB2, the normally closed switch BB2 is connected to the starting switch B0B1, and the starting switch B0B1 is respectively connected to the conversion device SS and the first end A1 of the coil of the locking relay KA.

[0037] It should be noted that when the vehicle is not inside the switchgear, the start relay KA4, normally closed switch BB2, and start switch B0B1 are closed, indicating that the interlock circuit is activated. At this point, the drive circuit meets the electrical conditions and energizes the locking relay KA, activating it. Control module B1 then supplies power to the motor MT that drives the trolley chassis. Terminals 9 and 10 of control module B1 output a 220V voltage to power MT. If any node in the interlock circuit fails to meet the electric operation logic, locking relay KA will not operate, disconnecting the power supply to the motor that drives the trolley chassis. This effectively prevents malfunction of the trolley chassis due to a malfunction in the operating module.

[0038] Example 2:

[0039] Figure 2 This is a three-dimensional structural diagram of the control box for driving the switchgear trolley chassis according to an embodiment of the present invention. Figure 3 This is a partial exploded structural diagram of the control box for driving the switchgear trolley chassis according to an embodiment of the present invention. Figure 4 This is a structural diagram of the control box body of the control box that drives the switch cabinet trolley chassis according to an embodiment of the present invention.

[0040] like Figures 2 to 4 As shown, an embodiment of the present invention further provides a control box for driving a switchgear trolley chassis, comprising a control box body 10 having an inner cavity, a box cover 20 covering the control box body 10, and a control board built into the control box body 10, wherein the control board comprises a main control indicator board 30 and a drive board 40, wherein the main control indicator board 30 is located above the drive board 40 and is installed in the inner cavity of the control box body 10, and the control device for driving the switchgear trolley chassis is provided on the control board;

[0041] The control module of the control device for driving the switchgear trolley chassis is arranged on the main control indicator board 30 , and the interlocking circuit and the locking relay of the control device for driving the switchgear trolley chassis are both arranged on the driving board 40 .

[0042] It should be noted that the connection terminals of the interlock circuit and the locking relay are also provided on the driving board 40 .

[0043] In an embodiment of the present invention, the control box of the chassis of the driving switch cabinet trolley is designed with the driving board 40 and the main control indicator board 30 separately. The control module and display or indicator devices are centrally arranged on the main control indicator board 30, and the electrical components of the interlock circuit, locking relay and drive motor are centrally arranged on the driving board 40. A certain gap is maintained between the main control indicator board 30 and the driving board 40. During operation and maintenance, it is found that the power supply and drive motor circuit modules are prone to failure. Compared with traditional control modules, any circuit board of the control board in the control box of the chassis of the driving switch cabinet trolley can be replaced independently. The independently designed circuit boards greatly reduce maintenance costs and are easy to replace.

[0044] The control box for driving the switch cabinet trolley chassis provided by the present invention adopts an independent design of the driving board and the main control indicator board, which avoids interference on the internal circuit of the control module in the control board, reduces the risk of internal failure of the control module, and also facilitates equipment maintenance, greatly improves operating efficiency, and solves the technical problem that the secondary components of the existing switch cabinet trolley chassis control module are energized during long-term operation and have poor anti-interference performance.

[0045] like Figure 3 As shown, in one embodiment of the present invention, the control box body 10 and the box cover 20 are both made of aluminum alloy. The four corners of the control box body 10 are provided with mounting connection holes 11, and corresponding mounting holes corresponding to the mounting connection holes 11 are opened on the box cover 20. Fasteners 22 are inserted through the mounting holes into the mounting connection holes 11 to cover the box cover 20 on the control box body 10, and the inner cavity of the control box body 10 is formed into a closed space.

[0046] It should be noted that the control box 10 is made of aluminum alloy, which is easy to process and shape, has no gaps in appearance, forms a closed space inside, and has good sealing performance. In addition, the aluminum alloy shell has a good shielding effect on the electromagnetic field, avoiding the internal control from being affected by electromagnetic interference from the operation of the equipment, thereby improving the anti-interference performance of the module in the control panel.

[0047] like Figure 3 As shown, in one embodiment of the present invention, countersunk holes 12 for installing the control board are opened at the four corners of the bottom end surface of the inner cavity of the control box body 10. Corresponding to the countersunk holes 12, connecting holes 101 are opened on the main control indicator board 30 and the driving board 40. The connecting columns pass through the connecting holes 101 of the main control indicator board 30 and the driving board 40 in turn and are inserted into the countersunk holes 12 to install the control board in the inner cavity of the control box body 10.

[0048] like Figure 3 As shown, in one embodiment of the present invention, grooves 31 are provided on both sides of the main control indicator plate 30 .

[0049] It should be noted that the groove 31 is mainly used to facilitate the use of tools or manual means to hold the main control indicator board 30 so that the main control indicator board 30 and the drive board 40 can be pulled out from the inner cavity of the control box 10, thereby facilitating maintenance or repair of the control board.

[0050] like Figure 2 As shown, in one embodiment of the present invention, elastic fasteners 13 are provided on the outer wall surface of the control box 10 , and the elastic fasteners 13 are provided on both sides of the control box 10 .

[0051] It should be noted that two elastic fasteners 13 are provided on each side of the outer wall of the control box body 10. The elastic fasteners 13 are mainly used to embed and fasten the control box of the chassis of the drive switch cabinet trolley to the switch cabinet door panel.

[0052] In one embodiment of the present invention, the control box for driving the switch cabinet trolley chassis further includes a pluggable terminal 50 , which passes through the bottom end surface of the control box body 10 and is installed on the driving board 40 .

[0053] It should be noted that by connecting to the external power supply through the plug-in terminal 50, the main control indicator board 30 is not directly connected to the external power supply, thereby realizing the separation of strong and weak electricity, so that the control module set in the main control indicator board 30 avoids the electromagnetic interference of the drive board 40, and gradually improves the stability of the control module operation.

[0054] In one embodiment of the present invention, a display device and a button device are provided on the main control indicator panel 30. Corresponding to the display device and the button device, a through hole is opened on the box cover 20, and the display device and the button device are exposed from the top surface of the box cover 20 through the through hole for easy observation.

[0055] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described devices and modules can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0056] In the several embodiments provided in this application, it should be understood that the disclosed devices and modules can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules is merely a logical function division. In actual implementation, there may be other division methods, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, which can be electrical, mechanical or other forms.

[0057] The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, that is, they may be located in one place. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment.

[0058] In addition, the functional modules in various embodiments of the present invention may be integrated into a single processing module, or each module may exist physically separately, or two or more modules may be integrated into a single module. The aforementioned integrated modules may be implemented in the form of hardware or software functional modules.

[0059] If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0060] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control device for driving a switchgear trolley chassis, comprising a drive circuit for driving the trolley chassis, the drive circuit comprising an interlocking circuit, a control module, a conversion device connected to the control module, and a motor, characterized in that: The control device for driving the switchgear trolley chassis further includes a latching relay, wherein a first end of the latching relay coil is connected to the conversion device, a second end of the latching relay coil is connected to the control module, a first end of the normally open contact of the latching relay is connected to the control module, and a second end of the normally open contact of the latching relay is connected to the motor; The locking relay is started, and the contacts of the locking relay that controls the operation of the motor are closed. The output voltage of the control module supplies power to the motor, and the motor drives the trolley chassis to operate; the locking relay does not work, and the control module is disconnected to provide power to the motor; when the interlocking circuit is in working state, the coil of the locking relay is not energized.

2. The control device for driving the switchgear trolley chassis according to claim 1 is characterized in that: The interlock circuit also includes a starting switch, a normally closed switch and a starting relay; the starting relay is connected to the normally closed switch, the normally closed switch is connected to the starting switch, and the starting switch is respectively connected to the first end of the conversion device and the locking relay coil.

3. The control device for driving the switchgear trolley chassis according to claim 1, characterized in that: The motor is used to drive the switch cabinet trolley chassis to operate.

4. A control box for driving the chassis of a switch cabinet trolley, characterized in that: The switchgear trolley chassis comprises a control box having an inner cavity, a box cover covering the control box, and a control board built into the control box, wherein the control board comprises a main control indicator board and a drive board, the main control indicator board being located above the drive board and mounted in the inner cavity of the control box, and the control device for driving the switchgear trolley chassis according to any one of claims 1 to 3 being provided on the control board; The control module of the control device for driving the switchgear trolley chassis is arranged on the main control indicator board, and the interlocking circuit and the locking relay of the control device for driving the switchgear trolley chassis are both arranged on the driving board.

5. The control box for driving the switchgear trolley chassis according to claim 4 is characterized in that: The control box body and the box cover are both made of aluminum alloy. The four corners of the control box body are provided with mounting connection holes, and the box cover is provided with mounting holes corresponding to the mounting connection holes. Fasteners are inserted through the mounting holes to close the box cover on the control box body, and the inner cavity of the control box body forms a closed space.

6. The control box for driving the switchgear trolley chassis according to claim 4, characterized in that: Countersunk holes for installing the control board are provided at the four corners of the bottom end surface in the inner cavity of the control box body. Connecting holes are provided on the main control indicator board and the drive board corresponding to the countersunk holes. The connecting columns pass through the connecting holes of the main control indicator board and the drive board in turn and are inserted into the countersunk holes to install the control board in the inner cavity of the control box body.

7. The control box for driving the switchgear trolley chassis according to claim 4, characterized in that: Grooves are provided on both sides of the main control indicator panel.

8. The control box for driving the switchgear trolley chassis according to claim 4, characterized in that: Elastic fasteners are provided on the outer wall surface of the control box body, and the elastic fasteners are provided on both sides of the control box body.

9. The control box for driving the switchgear trolley chassis according to claim 4, characterized in that: It also includes a pluggable terminal, which is installed on the driving board through the bottom end surface of the control box.

10. The control box for driving the switchgear trolley chassis according to claim 4, characterized in that: The main control indicator panel is provided with a display device and a button device. Corresponding to the display device and the button device, a through hole is opened on the box cover, and the display device and the button device are exposed from the top surface of the box cover through the through hole.

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