KR20110045364A

KR20110045364A - counter weight

Info

Publication number: KR20110045364A
Application number: KR1020090101912A
Authority: KR
Inventors: 김기정
Original assignee: 볼보 컨스트럭션 이큅먼트 에이비
Priority date: 2009-10-26
Filing date: 2009-10-26
Publication date: 2011-05-04

Abstract

The present invention relates to a coronet-type counterweight, according to an embodiment of the present invention, the counterweight of the coronary-type counterweight seated on the counterweight support portion to serve as a counterweight so that the center of gravity of the heavy equipment is located as far as possible, wherein A counterweight supporting part seated therein, and a recessed groove in which a separate nut groove is formed on an inner upper bottom surface thereof; And a detachable nut inserted into the detachable nut groove and fastened by a coupling bolt together with the counterweight support, wherein the detachable nut is provided with a canned type counterweight.

Description

Tube Type Counterweight {counter weight}

The present invention relates to a tube-type counterweight, and more particularly, to prevent the defect of the counter-waiter itself by forming a replaceable removable nut.

In general, heavy equipment such as forklifts, excavators, etc., as shown in FIG. 1, is provided with counterweights 10, which are counterbalanced, to be balanced with external forces acting on the heavy equipment or heavy equipment, on the opposite side of the working device such as a boom or bucket. do.

The counterweight 10 may be broadly divided into a casting type manufactured by a casting method and a tube type manufactured by a method such as welding by cutting a steel plate structure.

The casting type meets the purpose of making the weight of the counterweight 10, but the entire structure is made of a single cast iron mass, there is a problem that the cost of the raw material is large and wastes resources.

On the other hand, the pipe-type can be manufactured by casing and welding work using a steel plate structure, and by filling and curing the concrete paste containing scrap scrap in the internal space, utilizing the waste material and the cost cost reduction advantage There is this.

As shown in FIG. 2, the welding nut 30 for fastening the coupling bolt 20 of the tube-type counter weight 10 is an integral structure in which the welding weight 30 is welded to the counterweight 10 itself. If a defect occurs due to damage of the weld nut 30 in the field, it cannot be repaired.

The present invention is to solve the above-described problems, an embodiment of the present invention relates to preventing the defect of the counter-waiter itself by forming a replaceable removable nut.

According to a preferred embodiment of the present invention, in the counterweight type of counterweight that is seated on the counterweight support portion to serve as a counterweight so that the center of gravity of the heavy equipment is located as far as possible, the counterweight support portion is seated, the inner upper bottom A seating groove in which a separate nut groove is formed; And a detachable nut inserted into the detachable nut groove and fastened by a coupling bolt together with the counterweight support, wherein the detachable nut is provided with a canned type counterweight.

According to an embodiment of the present invention as described above, first, since the nut is separated from the nut portion welded to the counterweight itself, it is possible to prevent damage to the weld nut due to the creation of the counterweight.

Second, in case of damage to the nut part due to the creation of the counterweight, it is possible to replace the separate nut instead of replacing the counterweight, thereby reducing the cost.

Hereinafter, a preferred embodiment of a canning type counterway according to an embodiment of the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

In addition, the following examples are not intended to limit the scope of the present invention, but merely illustrative of the components set forth in the claims of the present invention, which are included in the technical spirit throughout the specification of the present invention and constitute the claims Embodiments that include a substitutable component as an equivalent in the element may be included in the scope of the present invention.

1 is an assembled view showing a state in which a conventional counterweight is assembled in heavy equipment, FIG. 2 is an AA cross-sectional view of the counterweight shown in FIG. 1, FIG. 3 is an AA cross-sectional view of a counterweight according to an embodiment of the present invention; 4 is a perspective view of the counterweight shown in FIG. 3, and FIG. 5 is a perspective view of the detachable nut shown in FIG. 3.

The tube-type counterweight 10 according to the preferred embodiment of the present invention is seated on the counterweight support 50 to the counterweight-type counterweight 10 serving as a counterweight so that the center of gravity of the heavy equipment is located as far as possible. The counterweight supporting part 50 is seated therein, and a seating groove 11 in which a recessed nut 40 is formed on an inner upper bottom thereof; And a detachable nut 40 inserted into a groove of the detachable nut 40 and fastened by the coupling bolt 20 together with the counterweight support 50. The detachable nut 40 is replaced. It is possible.

Heavy equipment is mounted on the lower traveling body, the upper frame and the upper frame is turned in the left or right direction when driving the drive means, the cab mounted to the front and rear of the upper frame, the engine compartment, the boom connected to the upper frame And a working device including an arm and a bucket and a hydraulic cylinder for driving each of them.

The upper frame is for mounting various components of the heavy equipment, and the counterweight support part 50 for supporting the counterweight 10 is formed at the rear. The counterweight support unit 50 is installed at the rear of the upper frame by welding, and a plurality of through holes are formed for coupling with the counterweight 10.

The counterweight 10 is installed to be in contact with the rear of the upper frame, the mounting groove 11 is formed below the counterweight 10. The seating groove 11 is formed of a groove corresponding to the counterweight support 50 so that the counterweight support 50 is seated.

In the upper bottom of the seating groove 11, a separate nut 40 is formed so that the removable nut 40 is inserted. The removable nut 40 has a shape corresponding to the removable nut 40. The separable nut 40 is seated exactly in the groove of the separable nut 40 and is fastened by the coupling bolt 20 together with the counterweight support 50.

As the counterweight 10 is frequently detached from the field, a portion to which the counterweight is coupled is broken. Conventionally, as the coupling by the welding nut 30 is made, the counterweight 10, the welding nut 30 itself is broken, and a problem arises in that the counterweight 10 needs to be replaced.

Since the counterweight 10 of the present invention uses the separate nut 40 instead of the weld nut 30, it is possible to replace the separate nut 40 instead of replacing the counterweight 10 itself. It is easy and cost can be reduced.

It is also possible to form a separate nut 40 hole in place of the removable nut 40 groove. The removable nut 40 hole extends the upper side of the groove of the removable nut 40 further upward, and the extended portion extends left and right to communicate with the outside of the counterweight 10. In this case, since the end of the coupling bolt 20 coupled to the detachable nut 40 can be seen from the outside, it is possible to check whether the work is properly performed.

In the tube-type counterweight (10) according to a preferred embodiment of the present invention, the removable nut (40), the base portion 41 of the plate shape; A guide part 42 extending from left and right sides of an upper surface of the base part 41; And a through part 43 penetrating through the base part 41 and the guide part 42, and an internal thread formed on an inner circumferential surface thereof.

As shown in FIG. 5, the detachable nut 40 includes a base part 41, a guide part 42, and a through part 43. The lower portion of the base portion 41 is formed as a portion in which the upper side of the counterweight support portion 50 is in close contact, and the base portion 41 has a plate shape as a whole.

Guide parts 42 are formed on the left and right sides of the upper surface of the base part 41, and are parts that surround and guide the coupling bolt 20.

The guide part 42 and the base part 41 have a through part 43 formed at a position corresponding to the through hole formed in the counterweight support part 50, and the through part 43 to fasten the coupling bolt 20. A female screw is formed on the inner circumferential surface.

In the tube-type counterweight 10 according to a preferred embodiment of the present invention, at least two seating grooves 11 are formed.

As shown in FIG. 4, two or more mounting grooves 11 are formed. Since the seating grooves 11 are formed in a number corresponding to the counterweight support part 50, it is preferable that two or more seating grooves 11 are formed to stably support the counterweight 10.

1 is an assembly view showing a state in which a conventional counterweight is assembled in heavy equipment,

2 is a cross-sectional view A-A of the counterweight shown in FIG. 1;

3 is an A-A cross-sectional view of the counterweight according to an embodiment of the present invention;

4 is a perspective view of the counterweight shown in FIG.

5 is a perspective view of the removable nut shown in FIG. 3.

10: counterweight, 11: settling groove

20: coupling bolt

30: Welding Nut

40: removable nut, 41: base part, 42: guide part, 43: through part

50: counterweight support

Claims

In the counterweight of the tube-type counterweight mounted on the counterweight support portion and acting as a counterweight so that the center of gravity of the heavy equipment is as rearward as possible,

A seating groove in which the counterweight support part is seated and a separate nut groove is formed on an inner upper bottom surface thereof; And

Is inserted into the removable nut groove, the separation nut is fastened by a coupling bolt with the counterweight support portion;

The separable nut is a counterweight of the tube type, characterized in that replaceable.

The method of claim 1,

The removable nut,

Plate-shaped base portion;

Guide parts extending from left and right sides of the base part; And

The tube weight and the guide portion, the inner circumferential surface of the tube-type counterweight, characterized in that it comprises a;

The method according to claim 1 or 2,

The seating groove counterweight, characterized in that two or more formed grooves.