CN211790947U - Crane power supply device and crane - Google Patents
Crane power supply device and crane Download PDFInfo
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- CN211790947U CN211790947U CN202020690587.4U CN202020690587U CN211790947U CN 211790947 U CN211790947 U CN 211790947U CN 202020690587 U CN202020690587 U CN 202020690587U CN 211790947 U CN211790947 U CN 211790947U
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Abstract
The utility model relates to a hoist power supply unit and hoist, hoist power supply unit includes hoist main power supply part, energy storage system, the rectifier, the dc-to-ac converter, relay and three from restoring the fuse, hoist main power supply part includes the alternating current input interface, alternating current transmission line and alternating current output interface, the control coil of relay and first from restoring the fuse cluster and establishing on alternating current transmission line, the alternating current input interface passes through the alternating current end of charging line connection rectifier, energy storage system is connected to the direct current end of rectifier, the second is established on the charging line from restoring the fuse cluster, the direct current end of energy storage system connection inverter, the alternating current end of inverter passes through discharge line connection alternating current output interface, the normally closed contact switch and the third of relay are established on the discharge line from restoring the fuse cluster. Therefore, the power supply device can ensure reliable power supply of the crane, and can still output electric energy under the condition that the alternating current is lost, thereby ensuring the normal operation of the crane.
Description
Technical Field
The utility model relates to a hoist power supply unit and hoist.
Background
The crane is a multi-action crane for vertically lifting and horizontally carrying heavy objects within a certain range, and the crane is widely applied. The crane is mostly powered by the power grid alternating current, however, the reliability of a power supply of the crane is poor, and when the power grid alternating current fails and cannot output electric energy, the crane cannot work, and production is affected.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hoist power supply unit and hoist for solve the relatively poor problem of reliability of the power supply of current hoist.
In order to solve the problem, the utility model adopts the following technical scheme:
a power supply device for a crane comprises a main power supply part of the crane, an energy storage system, a rectifier, an inverter, a relay, a first self-resetting fuse, a second self-resetting fuse and a third self-resetting fuse;
the main power supply part of the crane comprises an alternating current input interface, an alternating current transmission line and an alternating current output interface, wherein the alternating current input interface is connected with one end of the alternating current transmission line, and the other end of the alternating current transmission line is connected with the alternating current output interface;
the relay comprises a control coil and a normally closed contact switch, and the control coil and the first self-resetting fuse are arranged on the alternating current transmission line in series;
the alternating current input interface is connected with one end of the charging circuit, the other end of the charging circuit is connected with an alternating current end of the rectifier, a direct current end of the rectifier is connected with a power supply end of the energy storage system, and the second self-resetting fuse is arranged on the charging circuit in series; the power supply end of the energy storage system is connected with the direct current end of the inverter, the alternating current end of the inverter is connected with one end of the discharge circuit, the other end of the discharge circuit is connected with the alternating current output interface, and the normally closed contact switch and the third self-resetting fuse are arranged on the discharge circuit in series.
Preferably, the crane power supply device further comprises an electricity detector, a controller and a full charge power-off control switch, wherein the electricity detector is arranged at the power supply end of the energy storage system and used for detecting the electricity quantity of the energy storage system, the full charge power-off control switch is arranged on the charging line in series, the signal output end of the electricity detector is connected with the signal input end of the controller, and the signal output end of the controller is connected with the full charge power-off control switch, so that the full charge power-off control switch is controlled to be switched off when the electricity quantity of the energy storage system reaches a preset value.
Preferably, the crane power supply device further includes a first maintenance manual switch, a second maintenance manual switch, a third maintenance manual switch and a fourth maintenance manual switch, and the connection of the ac power input interface to one end of the ac power transmission line specifically includes: the alternating current input interface is connected with one end of the alternating current transmission line through the first maintenance manual switch, and the connection of the other end of the alternating current transmission line with the alternating current output interface specifically comprises the following steps: the other end of the alternating current transmission line is connected with the alternating current output interface through the second dimension hand-operated switch, and the alternating current input interface is connected with one end of the charging line, specifically: the alternating current input interface is connected with one end of the charging circuit through the third dimension hand-operated switch, and the other end of the discharging circuit is connected with the alternating current output interface, which specifically comprises the following steps: and the other end of the discharge line is connected with the alternating current output interface through the fourth maintenance manual switch.
Preferably, the power supply device for the crane further comprises a main power supply indicator lamp, a charging indicator lamp and a standby power supply indicator lamp, wherein the main power supply indicator lamp is connected in series on the alternating current transmission line, the charging indicator lamp is connected in series on the charging line, and the standby power supply indicator lamp is connected in series on the discharging line.
Preferably, the power supply device for the crane further comprises a box body, the alternating current input interface, the alternating current output interface, the main power supply indicator lamp, the charging indicator lamp and the standby power supply indicator lamp are arranged on the box body, and the alternating current transmission line, the energy storage system, the rectifier, the inverter, the relay, the first self-recovery fuse, the second self-recovery fuse and the third self-recovery fuse are arranged in the box body.
Preferably, the crane power supply device further includes a first unidirectional conducting device and a second unidirectional conducting device, and the connection of the dc end of the rectifier to the power supply end of the energy storage system specifically includes: the direct current end of the rectifier is connected with the input end of the first one-way conduction device, and the output end of the first one-way conduction device is connected with the power supply end of the energy storage system; the connection of the power supply end of the energy storage system with the direct current end of the inverter specifically comprises the following steps: and the power supply end of the energy storage system is connected with the input end of the second one-way conduction device, and the output end of the second one-way conduction device is connected with the direct current end of the inverter.
A crane, comprising:
a crane body; and
such as the crane power supply described above.
The utility model has the advantages that: under normal conditions, the crane is powered by the main power supply part of the crane, at the moment, the control coil of the relay is electrified, the normally closed contact switch of the relay is disconnected, the discharge circuit of the energy storage system is disconnected, the energy storage system does not provide electric energy, and the alternating current input by the alternating current input interface charges the energy storage system through a charging circuit and a rectifier, so that the electric energy of the energy storage system is sufficient; when the alternating current fails and cannot be output, the control coil of the relay loses power at the moment, the normally closed contact switch of the relay is closed, the discharge circuit of the energy storage system is conducted, and the energy storage system provides the alternating current through the inverter; when the alternating current recovered normal, the control coil of relay got electric, and the normally closed contact switch disconnection of relay, energy storage system's discharge line disconnection, and energy storage system no longer provides the electric energy to, the alternating current of alternating current input interface input charges for energy storage system through charging circuit and rectifier, guarantees that energy storage system's electric energy is sufficient. Therefore, the power supply device can ensure reliable power supply of the crane, still ensure electric energy output under the condition of power loss of the alternating current, and ensure normal operation of the crane. Moreover, the three self-resetting fuses are arranged, so that the operation safety of the circuit can be guaranteed, the self-resetting fuses can be used for multiple times, the self-resetting fuses do not need to be replaced after being fused every time, the operation reliability is improved, and the operation burden is reduced.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described as follows:
FIG. 1 is a circuit diagram of a crane power supply;
FIG. 2 is a charge control schematic;
fig. 3 is a structural view of the case.
Detailed Description
The embodiment of the crane comprises:
the embodiment provides a crane, which comprises a crane body and a crane power supply device, wherein the crane power supply device is used for providing electric energy for the crane body. The crane body is conventional crane equipment and is not described in detail.
As shown in fig. 1, the power supply apparatus for the crane includes a main power supply portion of the crane, a first maintenance manual switch 3, a relay, a second maintenance manual switch 5, a main power supply indicator lamp 6, a first self-recovery fuse 7, a third maintenance manual switch 8, a rectifier 9, an energy storage system 10, a charging indicator lamp 11, a second self-recovery fuse 12, an inverter 13, a fourth maintenance manual switch 14, a third self-recovery fuse 15, and a standby power supply indicator lamp 17.
The main power supply part of the crane comprises an alternating current input interface 1, an alternating current transmission line and an alternating current output interface 2. Alternating current input interface 1 and alternating current output interface 2 all can be conventional wiring nose, and alternating current transmission line can be conventional copper core wire, and specific specification is set up by actual need. The alternating current input interface 1 is connected with one end of an alternating current transmission line through a first maintenance manual switch 3, and the other end of the alternating current transmission line is connected with the alternating current output interface 2 through a second maintenance manual switch 5. The ac input interface 1 is used for receiving ac power, which may be 220V single-phase ac power or 380V three-phase ac power, and the type of the received ac power corresponds to the power supply mode of the crane, and if the received ac power is 220V single-phase ac power, the ac power transmission line is a single-phase line, and if the received ac power is 380V three-phase ac power, the ac power transmission line is a three-phase line. The alternating current output interface 2 is used for supplying power and connecting with a power supply end of the crane body. In this embodiment, the structure of the crane power supply device is described by taking an ac as 220V single-phase ac as an example, as another embodiment, if the ac is 380V three-phase ac, the specific connection mode and the number of the related components in the crane power supply device need to be adjusted accordingly.
The first and second service hand switches 3 and 5 and the third and fourth service hand switches 8 and 14 described below may be conventional hand switches such as knife switches. When equipment on an alternating current transmission line, a charging line or a discharging line needs to be maintained or replaced, a corresponding maintenance manual switch is switched off, and maintenance or replacement is convenient.
The relay comprises a control coil 4 and a normally closed contact switch 16. It should be understood that the specific type of relay is adapted to the ac power, and in this embodiment, the relay is a 220V ac relay. The control coil 4, the main power supply indicator lamp 6 and the first self-resetting fuse 7 are arranged on the alternating current power transmission line in series. The position relations of the control coil 4, the main power supply indicator lamp 6 and the first self-resetting fuse 7 on the alternating current transmission line are not limited, the three can be set according to actual needs, and a specific implementation mode is shown in fig. 1. The main power supply indicator lamp 6 and the charging indicator lamp 11 and the standby power supply indicator lamp 17 described below may be conventional indicator lamps, and the three indicator lamps may be provided as indicator lamps of different colors in order to distinguish the three operation states. The first self-resetting fuse 7 and, as described below, the second self-resetting fuse 12 and the third self-resetting fuse 15 are conventional self-resetting fuse devices.
Alternating current input interface 1 connects the one end of charging line through third maintenance hand switch 8, and the other end of charging line connects the end of exchanging of rectifier 9, and charge indicator 11 and second are established ties from compound fuse 12 and are set up on the charging line, and charge indicator 11 and second are from compound fuse 12 position relation on the charging line and do not do the injecing, and both can set up according to actual need, and fig. 1 has given a concrete implementation mode. The dc terminal of the rectifier 9 is connected to the supply terminal of the energy storage system 10. The specification and electrical parameters of the rectifier 9 are set by actual requirements, and the specific type of the rectifier 9 is determined by the kind of alternating current, and if the alternating current is single-phase alternating current, the rectifier 9 is a rectifying device for rectifying the single-phase alternating current into direct current, and if the alternating current is three-phase alternating current, the rectifier 9 is a rectifying device for rectifying the three-phase alternating current into direct current. The energy storage system 10 is a conventional energy storage device, and may include a plurality of battery cells arranged in series and parallel, and the voltage and capacity of the energy storage system 10 may be adapted to the crane body. It should be understood that the rectifier 9 is a rectifier with unidirectional flow of electric energy, i.e. alternating current can be rectified into direct current by the rectifier 9, but direct current cannot be inverted into alternating current by the reverse inversion action of the rectifier 9. Further, in order to reliably ensure the unidirectional charging, a first unidirectional conducting device 22, such as a diode, may be disposed between the dc terminal of the rectifier 9 and the power supply terminal of the energy storage system 10, the dc terminal of the rectifier 9 is connected to the input terminal of the first unidirectional conducting device 22 (i.e., the anode of the diode), and the output terminal of the first unidirectional conducting device 22 (i.e., the cathode of the diode) is connected to the power supply terminal of the energy storage system 10.
The power supply end of the energy storage system 10 is connected with the direct current end of the inverter 13, the alternating current end of the inverter 13 is connected with one end of the discharge circuit, and the other end of the discharge circuit is connected with the alternating current output interface 2 through the fourth maintenance manual switch 14. The specification and electrical parameters of the inverter 13 are set as required, and the specific type of the inverter 13 is determined by the kind of alternating current, and if the alternating current is a single-phase alternating current, the inverter 13 is an inverter for inverting a direct current into a single-phase alternating current, and if the alternating current is a three-phase alternating current, the inverter 13 is an inverter for inverting a direct current into a three-phase alternating current. It should be understood that the inverter 13 is a unidirectional flow inverter, i.e., dc power can be inverted into ac power by the inverter 13, but ac power cannot be rectified into dc power by the reverse rectification of the inverter 13. Further, in order to reliably ensure the unidirectional discharging, a second unidirectional conducting device 23, such as a diode, may be disposed between the power supply terminal of the energy storage system 10 and the dc terminal of the inverter 13, the power supply terminal of the energy storage system 10 is connected to the input terminal of the second unidirectional conducting device 23 (i.e., the anode of the diode), and the output terminal of the second unidirectional conducting device 23 (i.e., the cathode of the diode) is connected to the dc terminal of the inverter 13.
A third self-resetting fuse 15, a normally closed contact switch 16 and a standby power supply indicator lamp 17 are arranged in series on the discharge line. The positional relationship of the third self-resetting fuse 15, the normally closed contact switch 16 and the standby power supply indicator lamp 17 on the discharge line is not limited, and the three can be set according to actual needs, and fig. 1 shows a specific embodiment.
In this embodiment, when the alternating current of alternating current input interface 1 access is normal power supply, can charge for energy storage system 10 through the charging line, in order to monitor energy storage system 10's electric quantity, prevent that energy storage system 10 from overcharging, crane power supply unit still includes electric quantity detector 19, controller 20 and full charge power-off control switch 18, electric quantity detector 19 is conventional electric quantity detection equipment, controller 20 is conventional control chip, for example singlechip or PLC, full charge power-off control switch 18 is conventional control switch, be controlled by the controller. The electric quantity detector 19 is arranged at a power supply end of the energy storage system 10 and used for detecting the electric quantity of the energy storage system 10, the full-charging power-off control switch 18 is arranged on a charging circuit in series, the specific position of the full-charging power-off control switch 18 on the charging circuit is not limited, and a specific implementation mode is given in fig. 1. As shown in fig. 2, the signal output terminal of the power detector 19 is connected to the signal input terminal of the controller 20, and the signal output terminal of the controller 20 is connected to the full-power-off control switch 18. The electric quantity detector 19 detects the electric quantity of the energy storage system 10 in real time, outputs the electric quantity to the controller 20, and a judgment strategy is arranged in the controller 20, so that when the electric quantity of the energy storage system 10 reaches a preset value (for example, when the electric quantity reaches full power or is close to full power), the full-charge power-off control switch 18 is controlled to be switched off, the energy storage system 10 is stopped being charged, and the energy storage system is prevented from being overcharged.
In this embodiment, in order to protect each component of the crane power supply device, the crane power supply device further includes a box 21, and the ac input interface 1, the ac output interface 2, the main power supply indicator lamp 6, the charging indicator lamp 11, and the standby power supply indicator lamp 17 are disposed on the box 21, as shown in fig. 3, a specific disposition position is determined by actual needs, and may be disposed on the same panel or different panels, and fig. 3 provides a specific implementation manner. And the alternating-current transmission line, the relay, the first self-recovery fuse 7, the rectifier 9, the energy storage system 10, the second self-recovery fuse 12, the inverter 13 and the third self-recovery fuse 15 are arranged in the box body 21. Besides the above-mentioned components, other components of the crane power supply device are arranged on or in the box 21 according to actual needs, for example, the first maintenance manual switch 3, the second maintenance manual switch 5, the third maintenance manual switch 8 and the fourth maintenance manual switch 14 may be arranged on the box 21, and the specific arrangement position is determined according to actual needs.
When the alternating current is supplied with power normally, the control coil 4 is electrified, the normally closed contact switch 16 is disconnected, the discharge line is disconnected, the alternating current is output to the crane through the alternating current input interface 1, the alternating current transmission line and the alternating current output interface 2, the energy storage system 10 does not output electric energy at the moment, in addition, the alternating current is converted into direct current through the rectifier 9 to charge the energy storage system 10, and the electric quantity of the energy storage system 10 is ensured to be sufficient. The energy storage system 10 is prevented from overcharging by the charge detector 19, the controller 20 and the full power down control switch 18.
When the alternating current fault is not output any more, the control coil 4 is de-energized, the normally closed contact switch 16 is closed, the discharge circuit is conducted, the inverter 13 inverts the direct current output by the energy storage system 10 into the alternating current, and the alternating current is output to the crane through the discharge circuit, so that the normal operation of the crane is ensured.
When the alternating current returns to normal, the control coil 4 is electrified, the normally closed contact switch 16 is disconnected, the discharge line is disconnected, the alternating current is output to the crane through the alternating current input interface 1, the alternating current transmission line and the alternating current output interface 2, the energy storage system 10 does not output electric energy any more, in addition, the alternating current is converted into direct current through the rectifier 9 to charge the energy storage system 10, and the electric quantity of the energy storage system 10 is ensured to be sufficient. The energy storage system 10 is prevented from overcharging by the charge detector 19, the controller 20 and the full power down control switch 18.
In the above embodiment, the crane power supply device includes the first maintenance manual switch 3, the second maintenance manual switch 5, the third maintenance manual switch 8, and the fourth maintenance manual switch 14, which is an optimized embodiment, and as another embodiment, the first maintenance manual switch 3, the second maintenance manual switch 5, the third maintenance manual switch 8, and the fourth maintenance manual switch 14 may not be provided.
Crane power supply unit embodiment:
the present embodiment provides a crane power supply device, and since the structure and the working process of the crane power supply device have been described in detail in the above crane embodiments, the description of the present embodiment is omitted.
The above embodiments are only for describing the technical solution of the present invention in a specific embodiment, and any equivalent replacement and modification or partial replacement of the present invention without departing from the spirit and scope of the present invention should be covered by the claims of the present invention.
Claims (7)
1. A power supply device of a crane is characterized by comprising a main power supply part of the crane, an energy storage system, a rectifier, an inverter, a relay, a first self-resetting fuse, a second self-resetting fuse and a third self-resetting fuse;
the main power supply part of the crane comprises an alternating current input interface, an alternating current transmission line and an alternating current output interface, wherein the alternating current input interface is connected with one end of the alternating current transmission line, and the other end of the alternating current transmission line is connected with the alternating current output interface;
the relay comprises a control coil and a normally closed contact switch, and the control coil and the first self-resetting fuse are arranged on the alternating current transmission line in series;
the alternating current input interface is connected with one end of a charging circuit, the other end of the charging circuit is connected with an alternating current end of the rectifier, a direct current end of the rectifier is connected with a power supply end of the energy storage system, and the second self-resetting fuse is arranged on the charging circuit in series; the power supply end of the energy storage system is connected with the direct current end of the inverter, the alternating current end of the inverter is connected with one end of a discharge circuit, the other end of the discharge circuit is connected with the alternating current output interface, and the normally closed contact switch and the third self-resetting fuse are arranged on the discharge circuit in series.
2. The crane power supply device according to claim 1, further comprising a power detector, a controller and a full-charging-and-power-off control switch, wherein the power detector is disposed at a power supply end of the energy storage system and is used for detecting the power of the energy storage system, the full-charging-and-power-off control switch is disposed on the charging line in series, a signal output end of the power detector is connected to a signal input end of the controller, and a signal output end of the controller is connected to the full-charging-and-power-off control switch, so that the full-charging-and-power-off control switch is controlled to be turned off when the power of the energy storage system reaches a preset value.
3. The crane power supply device according to claim 1, further comprising a first maintenance hand switch, a second maintenance hand switch, a third maintenance hand switch, and a fourth maintenance hand switch, wherein the ac power input interface is connected to one end of the ac power transmission line, specifically: the alternating current input interface is connected with one end of the alternating current transmission line through the first maintenance manual switch, and the connection of the other end of the alternating current transmission line with the alternating current output interface specifically comprises the following steps: the other end of the alternating current transmission line is connected with the alternating current output interface through the second dimension hand-operated switch, and the alternating current input interface is connected with one end of the charging line, specifically: the alternating current input interface is connected with one end of the charging circuit through the third dimension hand-operated switch, and the other end of the discharging circuit is connected with the alternating current output interface, which specifically comprises the following steps: and the other end of the discharge line is connected with the alternating current output interface through the fourth maintenance manual switch.
4. The crane power supply device according to claim 1, further comprising a main power supply indicator lamp, a charging indicator lamp and a backup power supply indicator lamp, wherein the main power supply indicator lamp is serially connected to the ac power line, the charging indicator lamp is serially connected to the charging line, and the backup power supply indicator lamp is serially connected to the discharging line.
5. The crane power supply device according to claim 4, further comprising a box, wherein the ac power input interface, the ac power output interface, the main power supply indicator lamp, the charging indicator lamp and the standby power supply indicator lamp are disposed on the box, and the ac power transmission line, the energy storage system, the rectifier, the inverter, the relay, the first self-resetting fuse, the second self-resetting fuse and the third self-resetting fuse are disposed in the box.
6. The crane power supply device according to claim 1, further comprising a first unidirectional conducting device and a second unidirectional conducting device, wherein the connection of the dc terminal of the rectifier to the power supply terminal of the energy storage system is specifically: the direct current end of the rectifier is connected with the input end of the first one-way conduction device, and the output end of the first one-way conduction device is connected with the power supply end of the energy storage system; the connection of the power supply end of the energy storage system with the direct current end of the inverter specifically comprises the following steps: and the power supply end of the energy storage system is connected with the input end of the second one-way conduction device, and the output end of the second one-way conduction device is connected with the direct current end of the inverter.
7. A crane, comprising:
a crane body; and
the crane power supply as claimed in any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020690587.4U CN211790947U (en) | 2020-04-29 | 2020-04-29 | Crane power supply device and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020690587.4U CN211790947U (en) | 2020-04-29 | 2020-04-29 | Crane power supply device and crane |
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| Publication Number | Publication Date |
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| CN211790947U true CN211790947U (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020690587.4U Active CN211790947U (en) | 2020-04-29 | 2020-04-29 | Crane power supply device and crane |
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| Country | Link |
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| CN (1) | CN211790947U (en) |
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2020
- 2020-04-29 CN CN202020690587.4U patent/CN211790947U/en active Active
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