KR-20260064332-A - EXCAVATOR ELECTRIFICATION MODULE AND EXCAVATOR HAVING THE SAME

KR20260064332AKR 20260064332 AKR20260064332 AKR 20260064332AKR-20260064332-A

Abstract

The present invention relates to an excavator electrification module for electrifying an engine-based excavator, comprising: a housing mountable to a counterweight mount portion of the engine-based excavator; an electric motor installed within the housing; a motor hydraulic pump installed in the housing that generates hydraulic pressure for the operation of a work mechanism of the engine-based excavator using the power of the electric motor; an electrification controller electrically connected to a main controller of the engine-based excavator and controlling the operation of the electric motor based on a control signal from the main controller; and one or more built-in counterweights installed in a mount portion provided inside the housing and providing a load for weight balance to the engine-based excavator.

Inventors

김지용

Assignees

주식회사 엘렉트

Dates

Publication Date: 20260507
Application Date: 20241031

Claims (13)

As an excavator electrification module for electrifying engine-based excavators, A housing mountable to the counterweight mount portion of the above-mentioned engine-based excavator; An electric motor installed within the above housing; A motor hydraulic pump installed in the above housing and generating hydraulic pressure for the operation of the working mechanism of the engine-based excavator using the power of the above electric motor; An electric motor controller electrically connected to the main controller of the engine-based excavator and controlling the operation of the electric motor based on a control signal from the main controller; and An excavator electrification module comprising: one or more built-in counterweights installed in a mounting portion provided inside the housing and providing a load for weight balance to the engine-based excavator.
In paragraph 1, The above-mentioned mount portion has a space capable of installing a plurality of the above-mentioned built-in counterweights, and An excavator electric module characterized by the fact that the number of the above-mentioned built-in counterweights installed in the mount portion can be adjusted according to the target weight of the excavator electric module.
In paragraph 2, the above-mentioned mount part is, An excavator electrification module characterized by having a shape of a receiving groove that is recessed from the support surface of the housing supporting the electric motor and can accommodate a plurality of the built-in counterweights stacked thereon.
In paragraph 2, the above-mentioned built-in counterweight is, An excavator electrification module characterized by having a plate shape formed to correspond to the shape of the above-mentioned mount part and having a shape that can be stacked in multiple layers.
In paragraph 4, An excavator electric module characterized by having a locking member formed in the above-mentioned internal counterweight, the locking hole formed therein for engaging a traction tool.
In paragraph 5, An excavator electric module characterized in that the above-mentioned locking member is formed within a groove recessed from the surface of the above-mentioned built-in counterweight.
In paragraph 3, the above-mentioned mount part is, A first mount groove formed in the center of the above housing and having a plurality of first counterweights installed therein; and An excavator electric module characterized by including second and third mount grooves, each formed on both sides of the first mount groove and having a plurality of second and third counterweights respectively installed thereon.
In paragraph 3, An excavator electrification module characterized by further including a base plate that is fixedly installed on the support surface of the housing and supports the electric motor.
In paragraph 8, An excavator electric module characterized by having a control box installed on the base plate to accommodate the electric controller.
In paragraph 8, One or more insertion holes are formed in the above-mentioned built-in counterweight, and An excavator electric module characterized by having an insertion rod formed in the above-described mount portion that is inserted into the above-described insertion hole.
In Paragraph 10, A through hole is formed in the base plate through which the insertion rod passes, and An excavator electric module characterized by having a fixing means for fixing the base plate fastened to the end of the insertion rod.
In paragraph 1, An excavator electric module characterized by further including a coupling portion installed in the above housing and detachably coupled to the above counterweight mount portion.
Excavator body to which the working mechanism is connected; An internal combustion engine installed in the above-mentioned excavator body and controlled by an engine controller; An engine hydraulic pump that generates hydraulic pressure for the operation of the work mechanism using power generated by the internal combustion engine; and An excavator electrification module installed on the body of the excavator and configured to operate the work mechanism in an electric manner without operating the internal combustion engine; The above-mentioned excavator electrification module is, A housing mountable to the counterweight mount portion of the excavator body; An electric motor installed within the above housing; A motor hydraulic pump installed in the above housing and generating hydraulic pressure for the operation of the above work mechanism using power generated from the above electric motor; An electric motor controller electrically connected to the main controller of the excavator and controlling the operation of the electric motor based on a control signal from the main controller; and An excavator characterized by including one or more built-in counterweights installed in a mounting portion provided inside the housing and providing a load for weight balance to the engine-based excavator.

Description

Excavator Electricity Module and Excavator Having the Same The present invention relates to an excavator electrification module for converting an engine-based excavator into an electric excavator and an excavator equipped with the same. An excavator is a construction machine that performs tasks such as excavation work to dig the ground, loading work to transport soil, crushing work to demolish buildings, and leveling work to prepare the ground at civil engineering, construction, and construction sites. Such excavators are typically configured to obtain driving force from an engine to operate a hydraulic pump for the operation of the actuator mechanism, and diesel engines using diesel fuel are commonly used. Recently, development of electric excavators capable of being driven by electric energy is underway to address environmental pollution problems caused by the use of fossil fuels such as diesel. Electric excavators drive the machine using a motor instead of a conventional engine; consequently, they offer the advantage of eliminating intake and exhaust means and reducing airborne noise by miniaturizing the size of the fan. However, as electric excavators increasingly replace conventional engine-based excavators, the problem of discarding or not using existing engine-based excavators may arise. FIG. 1 is an exploded perspective view of an excavator equipped with an excavator electrification module according to one embodiment of the present invention. FIG. 2 is a block diagram of an excavator equipped with an excavator electrification module according to one embodiment of the present invention. FIG. 3 is a diagram showing a hydraulic circuit of an excavator equipped with an excavator electricization module according to one embodiment of the present invention. FIG. 4 is a perspective view of an excavator electrification module according to one embodiment of the present invention. FIG. 5 is an exploded perspective view of the excavator electrification module shown in FIG. 4. FIG. 6 is a drawing showing the state in which a counterweight is installed in the housing of the excavator electric module illustrated in FIG. 4. FIG. 7 is a drawing showing a hydraulic circuit of an excavator equipped with an excavator electricization module according to another embodiment of the present invention. The present invention is capable of various modifications and may have various embodiments; specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the present invention. In describing the present invention, detailed descriptions of related prior art are omitted if it is determined that such detailed descriptions may obscure the essence of the present invention. Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms. These terms are used solely for the purpose of distinguishing one component from another. The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "having" are intended to indicate the presence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. Hereinafter, an excavator electrification module according to the present invention and an embodiment of an excavator equipped with the same will be described in detail with reference to the attached drawings. In describing with reference to the attached drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted. FIG. 1 is an exploded perspective view of an excavator equipped with an excavator electrification module according to an embodiment of the present invention, and FIG. 2 is a block diagram of an excavator equipped with an excavator electrification module according to an embodiment of the present invention. FIG. 3 is a diagram showing a hydraulic circuit of an excavator equipped with an excavator electrification module according to an embodiment of the present invention. Referring to FIGS. 1 to 3, the excavator (100) according to the present embodiment includes an excavator body (110), an internal combustion engine (140), an engine hydraulic pump (190), and an excavator electrification module (200). A work mechanism for performing tasks such as digging the ground is connected to the excav