CN211900853U - Excavator engine electric appliance grounding system and excavator - Google Patents
Excavator engine electric appliance grounding system and excavator Download PDFInfo
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- CN211900853U CN211900853U CN202020499016.2U CN202020499016U CN211900853U CN 211900853 U CN211900853 U CN 211900853U CN 202020499016 U CN202020499016 U CN 202020499016U CN 211900853 U CN211900853 U CN 211900853U
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Abstract
The utility model provides an excavator engine electric appliance grounding system and excavator, increases the earth connection through three main electric appliances in the engine main part, has realized the promotion of electric system stability and nature, especially in the moment that high-power electricity is opened, the electric system fault rate will obtain the reduction of great extent, has reduced the after-sales service cost; meanwhile, the high-power electric devices on the engine main body are respectively provided with the independent grounding wires, so that the reference deviation caused by the grounding wires can be reduced when the high-power electric devices work.
Description
Technical Field
The utility model relates to an excavator electrical system control field especially relates to an excavator engine electrical part ground system and excavator.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The electrical system of the excavator is one of three control systems of the excavator, along with the improvement of intellectualization and informatization levels, the electrical system plays more and more important roles, the basis of the electrical system is a wire harness, the wiring of the wire harness is the premise of intellectualization and informatization, particularly a grounding wire, the function and the performance of the whole electrical system are directly determined by the quality of the grounding wire in the electrical system of the excavator, many faults of the electrical system are caused by the bad grounding wire, particularly the grounding wire of a main electrical device on an engine, and the default in China and the engineering machinery industry is negative pole bonding, so that the cost can be reduced and the conducting wire can be saved as much as possible.
At present, the following wiring structure is generally adopted for a grounding wire on an engine in the prior art:
the generator and the glow plug are arranged on the engine shell and are mechanically connected with the engine shell through a mounting mechanism; an independent bonding wire (self-provided by an engine manufacturer) is arranged on the starter and used for grounding the starter, a grounding wire of the main body of the engine and a main platform is arranged on the main body of the engine, and the grounding wire of the controller is directly connected with the cathode of the storage battery.
The inventor finds that in the existing wiring mode, a generator and a glow plug are grounded by adopting a shell, even if the connection structure is mechanically connected, the connection structure still has contact resistance, the shell of an engine controller is directly fixed on an engine body, and when current flows, certain contact resistance still exists, particularly before and after an air conditioner is started, a preheating device and an engine are started, the contact resistance can influence the electrical performance of each electric device on one hand, namely, a resistor is connected in series, so that the reference deviation is generated among the electric devices, the performance of the electric devices cannot be effectively exerted, and waste is caused; on the other hand, the contact resistance has great influence on the signal of the sensor, and the performance of the whole machine is reduced in serious cases.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve above-mentioned problem, provide an excavator engine electrical part ground system, ground system is through increasing partial device, has solved among the prior art because contact resistance influences the problem that electrical part and complete machine performance descend.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an excavator engine electrical part ground system, includes the engine main part, generator, glow plug and engine controller are fixed in respectively on the ground connection casing of engine main part, generator and glow plug respectively with ground connection casing is connected, the engine main part passes through the engine bonding wire and is connected its characterized in that with main platform bonding point:
the generator is connected with a main platform grounding point through a generator grounding wire; the glow plug is connected with a main platform bonding point through a glow plug bonding wire; the engine controller shell is connected with a main platform bonding point through a controller shell bonding wire.
Furthermore, the system also comprises a storage battery, wherein the anode of the storage battery is connected with a main power switch, and the cathode of the storage battery is connected with a grounding point of the main platform.
Further, the generator is connected with the positive electrode of the storage battery through a main power switch.
Further, the engine controller is connected with the positive electrode of the storage battery through a main power switch.
Further, a starter is also mounted on the engine main body.
Further, the starter is connected with the positive electrode of the storage battery through a main power switch.
Furthermore, the starter is connected with a main platform bonding point through a starter bonding wire.
Further, the engine controller housing is connected with the negative electrode of the storage battery.
Further, the engine body is also provided with a fan for heat dissipation of the engine.
The utility model provides an excavator, a serial communication port, the excavator has utilized the utility model provides an excavator engine electrical part ground system.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the stability of an electrical system is improved by adding grounding wires to three main electrical devices on an engine;
(2) the cost of the grounding wire is extremely low, the failure rate of an electrical system of the excavator (particularly at the moment of high-power electrical starting) is greatly reduced under the condition of not increasing the cost, and the after-sale service cost is reduced.
(3) The high-power electric devices on the engine main body are provided with the independent grounding wires, so that the benchmark deviation caused by the grounding wires can be reduced during the work.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a structural diagram of an electrical component grounding system of a conventional excavator according to a first embodiment of the present invention;
fig. 2 is a structural diagram of an excavator engine electrical component grounding system after improvement in the first embodiment of the present invention.
The specific implementation mode is as follows:
the present invention will be further described with reference to the accompanying drawings and specific embodiments.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. When the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
In the present invention, terms such as "connected" and "connected" should be understood in a broad sense, and may be either fixedly connected or integrally connected or detachably connected; may be directly connected or indirectly connected through an intermediate. The meaning of the above terms in the present invention can be determined according to specific situations by persons skilled in the art, and should not be construed as limiting the present invention.
Example 1:
fig. 1 shows a structure of an electrical component grounding system of an excavator engine in the prior art, wherein electrical components on the engine mainly comprise: the starter is provided with an independent bonding wire (which is carried by an engine manufacturer) for being connected with a main platform bonding point for grounding, the engine main body is connected with the main platform bonding point through the engine bonding wire, the main platform is connected with the ground through a grounding wire, and the grounding wire of the engine controller shell is directly connected with the cathode of a storage battery.
As shown in fig. 2, a structure of the electrical component grounding system of the excavator in this embodiment is shown, in this embodiment, 3 grounding points are added on the basis of the conventional wiring of the electrical component of the engine: as shown in fig. 2, the generator bond strap (one end is connected to the position on the generator housing, and the other end is connected with the main platform bond point (4)), the glow plug (one end is connected with the negative pole of the glow plug (including the housing grounding type glow plug), the other end is connected with the main platform bond point (5)), the engine controller housing bond strap (one end is connected with the engine controller housing, and the other end is connected with the main platform bond point (6));
increase generator earth connection effect: the generator is a power supply mainly supplying power to the whole electrical system, when the main switch is switched on, the positive pole of the storage battery is connected with the generator and the starter, at the moment, the storage battery is a power supply, the positive pole of the storage battery is the positive pole of the power supply, the negative pole of the storage battery is the negative pole of the power supply, and after the engine runs, the generator generates power, the power supply in the electrical system is changed, the storage battery is switched to the generator, the storage battery is just a large capacitor stabilizing a power grid, the positive pole of the generator becomes the positive pole of the power supply of the whole electrical system, and the negative pole of the generator becomes the negative pole of the whole electrical system, the shell grounding of the original scheme greatly reduces the grounding effect, and the grounding effect becomes worse (a generator shell-an engine body-an engine grounding wire-a main; after the independent grounding wire is added, the independent grounding wire is directly connected with the main platform bonding point, so that the contact resistance is reduced sufficiently (the generator shell is directly connected to the main platform bonding point (4) and is closer to the storage battery, and meanwhile, a grounding path in the prior art shown in fig. 1 still exists), and the grounding effect after power supply switching is ensured;
the effect of the grounding wire of the glow plug is increased: the preheating plug shell is grounded (the shell is the engine main body, the engine bonding wire is the main platform bonding point (2)), the path is too long, the preheating effect cannot be fully exerted due to the influence of contact resistance during preheating, and after the grounding wire of the preheating plug is added (the shell is directly connected to the main platform bonding point (5) and is closer to a storage battery), the preheating effect is greatly increased.
Increase the engine controller casing ground effect: the engine controller shell is grounded by a mounting structure in the original scheme, when the engine controller shell is in high-power electrical (starting), the controller shell and an engine body can generate contact resistance, and a plurality of controller shells are connected with an internal power ground wire, so that the reference of the controller ground wire can be deviated, and the distortion of an acquired signal is caused; after the grounding wire is added, the engine controller shell is directly connected with the platform main body, and even when the engine controller is started, the grounding wire reference of the controller can be ensured and cannot be deviated too much, so that the stability and the reliability of an electrical system are improved.
In summary, the components (the generator, the glow plug and the engine controller) on the engine main body are added with a separate grounding wire which can be directly connected to the main platform near the storage battery or directly connected to the negative pole of the storage battery, particularly to the grounding wire of the generator and the grounding wire of the engine controller shell. The effect will be better.
Example 2:
the present embodiment provides an excavator, the electrical system of the engine of the excavator uses the electrical device grounding system structure of the excavator in embodiment 1, and the stability and the performance of the electrical system are improved by adding the grounding wires of three main electrical devices to the engine; due to the fact that the cost of the grounding wire is extremely low, under the condition that the cost is not increased, the failure rate of an electrical system (particularly at the moment of high-power electrical starting) is greatly reduced, the service cycle of the excavator is prolonged, and the after-sales service cost of the excavator is reduced.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (10)
1. The utility model provides an excavator engine electrical part ground system, includes the engine main part, generator, glow plug and engine controller are fixed in respectively on the ground connection casing of engine main part, generator and glow plug respectively with ground connection casing is connected, the engine main part passes through the engine bonding wire and is connected its characterized in that with main platform bonding point:
the generator is connected with a main platform grounding point through a generator grounding wire; the glow plug is connected with a main platform bonding point through a glow plug bonding wire; the engine controller shell is connected with a main platform bonding point through a controller shell bonding wire.
2. An excavator engine electrical component grounding system as claimed in claim 1, wherein: the system further comprises a storage battery, the positive electrode of the storage battery is connected with the main power switch, and the negative electrode of the storage battery is connected with the main platform grounding point.
3. An excavator engine electrical component grounding system as claimed in claim 2, wherein: the generator is connected with the positive electrode of the storage battery through a main power switch.
4. An excavator engine electrical component grounding system as claimed in claim 2, wherein: and the engine controller is connected with the positive electrode of the storage battery through a main power switch.
5. An excavator engine electrical component grounding system as claimed in claim 2, wherein: the engine controller housing is connected with the negative pole of the battery.
6. An excavator engine electrical component grounding system as claimed in claim 2, wherein: the engine main body is also provided with a starter.
7. An excavator engine electrical component grounding system as claimed in claim 6 wherein: the starter is connected with the positive electrode of the storage battery through a main power switch.
8. An excavator engine electrical component grounding system as claimed in claim 7 wherein: the starter is connected with a main platform bonding point through a starter bonding wire.
9. An excavator engine electrical component grounding system as claimed in claim 1, wherein: the engine body is also provided with a fan for heat dissipation of the engine.
10. An excavator, wherein the excavator employs an excavator engine electrical component grounding system as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020499016.2U CN211900853U (en) | 2020-04-08 | 2020-04-08 | Excavator engine electric appliance grounding system and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020499016.2U CN211900853U (en) | 2020-04-08 | 2020-04-08 | Excavator engine electric appliance grounding system and excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211900853U true CN211900853U (en) | 2020-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020499016.2U Active CN211900853U (en) | 2020-04-08 | 2020-04-08 | Excavator engine electric appliance grounding system and excavator |
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| Country | Link |
|---|---|
| CN (1) | CN211900853U (en) |
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2020
- 2020-04-08 CN CN202020499016.2U patent/CN211900853U/en active Active
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Address after: No.75, Huanghe East Road, Huangdao District, Qingdao City, Shandong Province 266599 Patentee after: Lovol Heavy Industry Group Co.,Ltd. Address before: No.75, Huanghe East Road, Huangdao District, Qingdao City, Shandong Province 266599 Patentee before: LOVOL Engineering Machinery Group Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |