Distribution box for engineering equipment
By designing a distribution box that includes CAN bus communication, distribution box controller and circuit on-off control components, the complexity of the power distribution needs of engines of super-large engineering equipment is solved, and the adaptation and flexible meeting of the power consumption needs of different models of engines are achieved.
Patent Information
- Application Number
- CN202420991713.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-05-08
AI Technical Summary
The existing technology cannot meet the engine distribution needs of ultra-large engineering equipment such as ultra-large excavators, and the complexity and flexibility of existing distribution boxes are not sufficient to meet their complex electricity needs.
A distribution box for engineering equipment is designed. The distribution box communicates with the main controller through a CAN bus, including a circuit board, a distribution box controller, a circuit on-off control element, an overload protection device, a detection unit, an alarm unit and other components. It can receive the power consumption demand signals sent by the main controller and control the status of the circuit on-off control element to meet the power consumption demand.
The distribution box can be adapted to different models of engines, meets the complex electricity needs of super-large engineering equipment, and improves the flexibility and reliability of the distribution system.
Smart Images
Figure CN222581797U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of power distribution boxes, and in particular to a power distribution box for engineering equipment. Background Art
[0002] The power distribution of engineering equipment is an important factor in the normal operation of the electrical system of engineering equipment. For super-large engineering equipment, the power demand is more complicated due to the addition of more functions. Taking excavators as an example, compared with ordinary excavators, super-large excavators have added functions such as cab preheating, cab pressurization, diesel heating, diesel inlet pipeline heating, and diesel return pipeline heating. In the case of more new functions, the engine power distribution requirements are also more complicated, and the power distribution box used in the prior art cannot meet the engine power distribution requirements of super-large engineering equipment. Utility Model Content
[0003] In order to solve the above technical problems, the purpose of the embodiments of the present application is to provide a distribution box for engineering equipment.
[0004] In order to achieve the above-mentioned object, a first aspect of an embodiment of the present application provides a power distribution box for engineering equipment, the engineering equipment comprising a main controller and a plurality of power-consuming components, the power distribution box communicates with the main controller via a CAN bus, and the power distribution box comprises:
[0005] A circuit board is provided with a distribution box controller and a circuit on-off control element electrically connected to each electrical component. The distribution box controller is used to receive a power demand signal regarding a target electrical component sent by a main controller, and send the power demand signal to the target circuit on-off control element corresponding to the target electrical component to control the state of the target circuit on-off control element to change to an open state or a closed state. The power demand signal includes a power signal and / or a power stop signal.
[0006] In the embodiment of the present application, a first overload protection device is also provided on the circuit board to prevent the circuit board from current overload.
[0007] In an embodiment of the present application, the distribution box also includes: a detection unit, which is arranged on the circuit board and is used to detect whether there is an abnormality in the circuit on-off control element and the first overload protection device; an alarm unit, which is arranged on the circuit board and is used to send an alarm signal after receiving the status abnormality signal sent by the detection unit.
[0008] In the embodiment of the present application, the first overload protection device is at least one of a plug-in fuse, a tube fuse, a plug-in fuse with light, and a self-resetting fuse.
[0009] In the embodiment of the present application, the distribution box further includes: a contactor for switching power supply; and a plurality of output terminal posts arranged side by side below the contactor.
[0010] In the embodiment of the present application, the contactor includes a lead-acid contactor and a lithium-acid contactor.
[0011] In the embodiment of the present application, the distribution box also includes: a second overload protection device for preventing the contactor from overloading current.
[0012] In the embodiment of the present application, a plurality of connector plugs are arranged on the outside of the distribution box.
[0013] In the embodiment of the present application, a power-on relay is also provided on the circuit board.
[0014] In the embodiment of the present application, the circuit on-off control element includes a switch and / or a relay.
[0015] The above technical scheme provides a power distribution box for engineering equipment. The engineering equipment includes a main controller and multiple power components. The power distribution box communicates with the main controller via a CAN bus. The power distribution box includes a circuit board, on which a power distribution box controller and a circuit on-off control element electrically connected to each power component are provided. The power distribution box controller is used to receive a power demand signal about a target power component sent by the main controller, and send the power demand signal to a target on-off control element corresponding to the target power component to control the state of the target circuit on-off control element to change to an open state or a closed state. The power demand signal includes a power signal and / or a stop power signal. The power distribution box in the present application is connected to multiple power components on the engineering equipment, and can receive a power demand signal sent by the main controller on the engineering equipment via the CAN bus, thereby changing the state of the corresponding circuit on-off control element to meet the power demand of the corresponding power component, and can adapt to generators of different models, thereby meeting the engine power distribution requirements of super-large engineering equipment.
[0016] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. In the accompanying drawings:
[0018] Figure 1 A structural block diagram of a power distribution box for engineering equipment provided in an embodiment of the present application;
[0019] Figure 2A schematic structural diagram of a power distribution box for an excavator is provided as another specific embodiment of the present application.
[0020] Description of Reference Numerals
[0021] 100 Distribution Box 110 Distribution Box Controller
[0022] 120 Circuit on / off control components 200 Engineering equipment
[0023] 210 Main controller 220 Power components
[0024] 9 Power switch DETAILED DESCRIPTION
[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the specific implementation methods described herein are only used to illustrate and explain the embodiments of the present application, and are not used to limit the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0026] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.
[0028] Figure 1 This is a structural block diagram of a power distribution box for engineering equipment provided in an embodiment of the present application. Figure 1As shown, the embodiment of the present application provides a power distribution box 100 for engineering equipment, the engineering equipment 200 includes a main controller 210 and a plurality of power components 220, the power distribution box 100 communicates with the main controller 210 via a CAN bus, and the power distribution box 100 may include:
[0029] A circuit board is provided with a distribution box controller 110 and a circuit on-off control element 120 electrically connected to each electrical component 220. The distribution box controller 110 is used to receive a power demand signal regarding a target electrical component 220 sent by a main controller 210, and send the power demand signal to the target circuit on-off control element 120 corresponding to the target electrical component 220 to control the state of the target circuit on-off control element 120 to change to an open state or a closed state. The power demand signal includes a power signal and / or a power stop signal.
[0030] In the embodiment of the present application, the power distribution box 100 can be applied to a variety of engineering equipment 200, including ordinary engineering equipment 200 and super-large engineering equipment 200, such as super-large excavators, etc. The engineering equipment 200 includes a main controller 210 and a plurality of electrical components 220. The main controller 210 communicates with other electrical components on the engineering equipment 200, such as a display screen, a bus radio, a GPS module, and an air conditioning controller, etc. The main controller 210 can obtain the power demand signal sent by the user through the display screen and other devices. The power distribution box 100 can communicate with the main controller 210 of the engineering equipment 200 through the CAN bus, thereby receiving the signals of the electrical components sent by other buses in the engineering equipment 200.
[0031] It can be understood that a circuit board is installed in the distribution box 100, on which a distribution box controller 110 and multiple circuit on-off control elements 120 are provided. The multiple circuit on-off control elements 120 correspond to multiple electrical components 220 in the engineering equipment 200, and each circuit on-off control element 120 is respectively connected to each electrical component 220 to meet the power demand of each electrical component 220.
[0032] Specifically, when the user chooses to turn on or off the target power components 220 on one or more engineering equipment 200 through the display screen, the main controller 210 of the engineering equipment 200 can receive the instructions input by the user and generate a power demand signal about the target power components 220, and then send the power demand signal to the distribution box controller 110 of the distribution box 100. Among them, the power demand signal includes a power signal and a stop power signal. The distribution box controller 110 in the distribution box 100 can cyclically scan the signal in real time. After receiving the power demand signal sent by the main controller 210, it immediately performs a simple logical calculation to determine the result of the logical operation, that is, to obtain the target circuit on-off element corresponding to the target power component 220 and the corresponding on-off signal, in response to the input power demand signal. Among them, the on-off signal includes an open signal and a closed signal. Furthermore, the distribution box controller 110 feeds back the logic operation result to the target circuit on-off control element 120 to control the state of the target circuit on-off control element 120 to change to an open state or a closed state, thereby stopping or starting power supply to the target power-consuming component 220 to respond to the power demand input by the user.
[0033] In this way, the circuit on-off control elements on the power distribution box are electrically connected to the various power-consuming components on the engineering equipment, receive the power demand signal sent by the main controller through the CAN bus, and control the corresponding target circuit on-off control elements to respond to the power demand signal. It can realize power distribution for multiple power-consuming components with multiple functions in engineering equipment, and can match multiple different brands of engines, thereby meeting the power distribution needs of large excavators.
[0034] In the embodiment of the present application, the circuit on-off control element 120 includes a switch and / or a relay.
[0035] Specifically, a plurality of circuit on-off control elements 120 are provided on the circuit board in the power distribution box 100 in the embodiment of the present application. The circuit on-off control elements 120 are used to control the on-off of the circuit, and are used to control the power consumption state of each power-consuming component 220 by changing the open and close state. The circuit on-off control elements 120 include switches and / or relays. In one example, the plurality of circuit on-off control elements 120 on the circuit board can all be power switches, all be relays, or a combination of power switches and relays.
[0036] In the embodiment of the present application, a first overload protection device is also provided on the circuit board to prevent the circuit board from current overload.
[0037] It can be understood that in order to prevent the circuit board from current overload, a first overload protection device is also provided on the circuit board. The first overload protection device can be a fuse. The fuse can automatically blow when overcurrent occurs during circuit operation, thereby protecting the electrical components at the lower end of the fuse.
[0038] In the embodiment of the present application, the first overload protection device is at least one of a plug-in fuse, a tube fuse, a plug-in fuse with light, and a self-resetting fuse.
[0039] In an embodiment of the present application, the distribution box 100 also includes: a detection unit, which is arranged on the circuit board, and is used to detect whether there is an abnormality in the circuit on-off control element 120 and the first overload protection device; an alarm unit, which is arranged on the circuit board, and is used to send an alarm signal after receiving the status abnormality signal sent by the detection unit.
[0040] Specifically, a detection unit and an alarm unit are also provided on the circuit board, and both the detection unit and the alarm unit communicate with the distribution box controller 110. The detection unit can be used to detect whether the circuit on-off control element 120 and the first overload protection device are abnormal, that is, to detect whether the fuse and the transistor are failed. After detecting that the fuse or the transistor is failed, a state abnormality signal is sent to the distribution box controller 110. The distribution box controller 110 can forward the received state abnormality signal to the alarm unit, so that the alarm unit sends an alarm signal after receiving the state abnormality signal, so as to prompt the technicians and enable the technicians to deal with the fault in time, thereby improving the safety of the distribution box 100.
[0041] In one example, the distribution box 100 further includes a communication unit for data communication between the distribution box 100 and other electrical components in the electrical system of the engineering equipment 200, such as a display screen, a bus radio, a GPS module, an air conditioning controller, and the like.
[0042] In one example, the distribution box 100 also includes a power conversion unit for converting the input DC power into the operating voltage required for the distribution box controller 110, communication unit, detection unit and alarm unit to ensure the normal operation of the distribution box 100.
[0043] In the embodiment of the present application, the distribution box 100 further includes: a contactor for switching power supply; and a plurality of outgoing wiring posts arranged side by side below the contactor.
[0044] Specifically, to achieve power switching, a contactor is further provided in the power distribution box 100, which is fixed in the lower shell of the shell of the power distribution box 100. In one example, the contactor can be a high current contactor, which is used to switch the system power supply and the lithium power supply.
[0045] In the embodiment of the present application, the contactor includes a lead-acid contactor and a lithium-acid contactor.
[0046] Specifically, the contactors arranged in the distribution box 100 are a lead-acid contactor and a lithium-acid contactor, which are installed adjacent to each other for switching between the system power supply and the lithium-acid power supply.
[0047] In the embodiment of the present application, the distribution box 100 further includes: a second overload protection device for preventing the contactor from overloading current.
[0048] It is understood that, in order to prevent the contactor from being overloaded during operation, the distribution box 100 may further include a second overload protection device, which is disposed inside the lower shell of the distribution box 100 housing and may be disposed adjacent to the contactor, for example, disposed below or to the right of the contactor, etc., to prevent the contactor from being overloaded. In one example, the second overload protection device may be a flat-plate fuse or other fuse that can be used to prevent the contactor from being overloaded.
[0049] In the embodiment of the present application, a plurality of connector plugs are disposed outside the distribution box 100 .
[0050] In the embodiment of the present application, a power-on relay is also provided on the circuit board.
[0051] Specifically, a power-on relay is also provided on the circuit board of the power distribution box 100 to meet the power-on requirement of the power distribution box 100. In one example, a backup relay may also be provided on the circuit board of the power distribution box 100 as a backup relay for the power-on relay.
[0052] In a specific embodiment of the present application, taking the engineering equipment as a super-large excavator as an example, the distribution box controller of the distribution box can receive the input signal sent by the main controller of the excavator, and the input signal is a digital input signal, including a high-level input signal and a low-level input signal. The input signal is the power demand signal of the power-consuming components on the excavator, for example, turning on the wiper at high speed, turning on the wiper at low speed, turning on the air-conditioning compressor, turning on the platform lighting, the main diesel pipeline heating power supply, the diesel heating control system power supply, the boom light power supply, the washing motor power supply, the cab ceiling light power supply, the air-conditioning compressor power supply, and the electric compressor power supply, etc.
[0053] A specific embodiment of the present application provides a distribution box for an excavator, which includes an upper shell and a lower shell, which are connected by a bayonet, and the shell is used to play a role of dust and water prevention during the operation of the distribution box, and the lower shell is vertically installed and fixed on the vertical plate of the electric control cabinet of the excavator by 4 M6 screws.
[0054] In a specific embodiment, the lower shell is equipped with a lead contactor and a lithium contactor, and a flat-plate fuse is installed on the right side of the lithium contactor. Below the two contactors, from right to left, there are 6 outlet terminals, namely T1, T2, T3, T4, T5, and T6. The 6 outlet terminals are all connected with bolts and cable OT terminals, among which T1 represents the control power input port 105, T2 represents the 220V inverter power output port 129, T3 and T4 are reserved, T5 represents the normal power input port 104, and T6 represents the lithium power input port.
[0055] In a specific embodiment, a circuit board is installed in the remaining space inside the lower shell, and a plurality of fuses and relays are installed on the circuit board, and the fuses are plug-in fuses. Specifically, three plug-in fuses are vertically installed in the upper left corner of the circuit board, and four plug-in fuses are arranged horizontally and in parallel below the three fuses. A power-on relay is arranged at the lower left of the circuit board, and two rows of plug-in fuses arranged side by side are arranged in parallel on the right side of the power-on relay, and each row is arranged with 6 plug-in fuses, and each plug-in fuse is arranged in a vertical installation manner. Five plug-in fuses are arranged horizontally and in parallel in the middle part of the left side of the circuit board, and a plug-in fuse and a spare relay are vertically arranged between the second and third plug-in fuses of the five plug-in fuses, and the spare relay serves as a spare element for the power-on relay.
[0056] There are also 7 connector plugs on the outside of the lower shell of the distribution box, mainly distributed on the upper and lower sides and the left side of the lower shell.
[0057] Figure 2 A schematic diagram of a power distribution box for an excavator is provided as another specific embodiment of the present application. Figure 2 As shown, in order to realize the power distribution to each electrical component in the excavator, a plurality of power switches 9 are also arranged on the circuit board of the power distribution box. Specifically, 13 power switches 9 are installed horizontally and side by side on the upper part of the circuit board, and 2 power switches 9 are installed vertically on the upper right of the circuit board. Eleven power switches 9 are installed vertically and side by side on the left side of the circuit board, and 4 power switches 9 are installed horizontally on the lower part of the circuit board. Multiple power switches 9 constitute the drive unit of the power distribution box, and the power distribution to each electrical component in the excavator is realized by power on and off control.
[0058] Through the above technical solution, multiple intelligent control units including a distribution box controller, a detection unit, a detection unit, a power conversion unit, a communication unit and an alarm unit are integrated in a distribution box, and the contactors and fuses are centrally installed in the distribution box. The circuit of the distribution box is equipped with four types of connectors to achieve connection with external circuits, and automatically realizes the switching of system power supply and lithium power supply, which is beneficial to improving the reliability of the electrical system and improving the installation and maintenance efficiency of the distribution box.
[0059] Thus, a specific embodiment of the present application provides a distribution box for engineering equipment in response to the fact that existing distribution boxes cannot meet the power distribution needs of super-large excavators. The distribution box can receive signals from other bus electrical components through the CAN bus, and can also perform logical operations and output signals. It has a controller output function and can match engines of various different brands, thereby meeting the power distribution needs of super-large excavators.
[0060] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.
[0061] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.
Claims
1. A power distribution box for engineering equipment, characterized in that: The engineering equipment includes a main controller and a plurality of electrical components. The power distribution box communicates with the main controller via a CAN bus. The power distribution box includes: A circuit board, wherein a distribution box controller and a circuit on-off control element electrically connected to each of the electrical components are provided on the circuit board, wherein the distribution box controller is used to receive a power demand signal regarding a target electrical component sent by the main controller, and send the power demand signal to a target circuit on-off control element corresponding to the target electrical component, so as to control the state of the target circuit on-off control element to change to an open state or a closed state, wherein the power demand signal includes a power signal and / or a power stop signal, wherein a first overload protection device is also provided on the circuit board, for preventing the circuit board from overloading current; A detection unit, disposed on the circuit board, for detecting whether the circuit on-off control element and the first overload protection device are in an abnormal state; An alarm unit, disposed on the circuit board, for issuing an alarm signal after receiving an abnormal state signal sent by the detection unit; Contactor, used for switching power supply; A plurality of outgoing wiring terminals are arranged side by side below the contactor.
2. The power distribution box according to claim 1, characterized in that: The first overload protection device is at least one of a plug-in type fuse, a tube type fuse and a self-resetting type fuse.
3. The power distribution box according to claim 1, characterized in that: The contactors include lead electric contactors and lithium electric contactors.
4. The power distribution box according to claim 1, characterized in that: The power distribution box also includes: a second overload protection device, which is used to prevent the contactor from overloading current.
5. The power distribution box according to claim 1, characterized in that: A plurality of connector plugs are arranged outside the distribution box.
6. The power distribution box according to claim 1, characterized in that: A power-on relay is also provided on the circuit board.
7. The power distribution box according to claim 6, characterized in that: The circuit on-off control element includes a switch and / or a relay.