CN114454973A

CN114454973A - Counterweight structure of engineering machinery

Info

Publication number: CN114454973A
Application number: CN202111320481.0A
Authority: CN
Inventors: 李成均
Original assignee: Hyundai Doosan Yingweigao Co ltd
Current assignee: Hyundai Doosan Yingweigao Co ltd
Priority date: 2020-11-09
Filing date: 2021-11-09
Publication date: 2022-05-10
Also published as: KR20220062878A

Abstract

The present invention relates to a counterweight structure for construction machinery, which may include: a main weight including a center portion coupled to a front surface portion of a rear end side of the construction machine body and side portions bent to be disposed at both sides of the center portion and formed with pull-type fender mounting portions of pull-type fenders coupled to the rear end side of the construction machine body by bolt fastening; and a sub-weight including a main frame coupled to the main weight by a second mounting bolt, and an edge tapered portion formed on both sides of the main frame to be narrowed in one direction, according to the present invention, it is possible to easily attach and detach the sub-weight to and from a vehicle body of a construction machine, to more effectively adjust a weight balance by being composed of a plurality of weights, and to minimize an obstacle to work by rounding processing and inclination processing.

Description

Counterweight structure of engineering machinery

Technical Field

The present invention relates to a counterweight structure for a construction machine, and more particularly, to a counterweight structure for a construction machine, which is easily attached to and detached from a vehicle body of a construction machine such as a wheel loader, can more effectively adjust a weight balance by being configured by a plurality of counterweights, and minimizes an obstacle to work by rounding and tilting.

Background

In general, a construction machine such as a wheel loader, an excavator, or the like performs a work of excavating earth, sand, or the like at a construction site or transporting earth, sand, construction materials, or the like and loading or unloading earth, sand, construction materials, or the like on a cargo vehicle, and is provided with a body including an engine, a working machine mounted on a front side of the body, and a counter weight (counter weight) as a balance weight for maintaining a weight balance between a vehicle body weight and a weight of an external force acting on the working machine at the time of the work.

Such a counterweight is mounted on the rear-rear side of the body to prevent the vehicle from tilting or overturning due to a load applied to the working machine mounted on the front side of the body.

However, since the conventional counterweight is fixedly attached to the rear end side of the body of the construction machine, when a load exceeding the rated load of the construction machine is applied to the working machine, there is a possibility that the rear end side of the construction machine may rise and turn over.

Even if the rated load of the construction machine is known, the work cannot be performed while the load of the work to be applied is measured one by one at the construction site, and a safety accident may occur.

The possibility of such a conventional construction machine overturning is due to the fact that the counterweight to be mounted is of a fixed type and it is not easy to adjust the weight of the counterweight.

Further, the counterweight of the conventional construction machine is mainly box-shaped as a weight body and is attached to a downward position in order to provide a stable feeling, and there is a possibility that the counterweight is locked and collides with the surrounding sloping terrain when the construction machine is retreated.

Disclosure of Invention

Technical problem

The present invention has been made to solve the problems in the related art as described above, and an object of the present invention is to provide a counterweight structure for a construction machine, which is easily attached to and detached from a vehicle body of the construction machine such as a wheel loader, can more effectively adjust weight balance by being configured by a plurality of counterweights, and minimizes work obstacles by rounding and tilting.

Technical scheme

The present invention for achieving the above object relates to a counterweight structure for a construction machine, which may include: a main weight including a center portion coupled to a front surface portion of a rear-end side of the construction machine body and side portions bent to be disposed at both sides of the center portion and formed with pull-type fender mounting portions of pull-type fenders coupled to the rear-end side of the construction machine body; and a secondary weight including a main body frame coupled to the main weight and an edge tapered portion formed at both sides of the main body frame to be narrowed from an inner side to an outer side.

In addition, in the embodiment of the present invention, a central inclined portion inclined upward from the inside to the outside may be formed at a lower portion of the central portion, and a side inclined portion inclined upward from the inside to the outside may be formed at a lower portion of the side portion.

Further, in an embodiment of the present invention, the center part may include: a pair of first fastening holes fastened to the first mounting bolts to couple the main counterweight to a front surface portion of the rear side of the construction machine body; and a pair of second fastening holes disposed inside the pair of first fastening holes, and fastened to a second mounting bolt to couple the sub-counterweight to the main counterweight.

In the embodiment of the present invention, a tow pin attachment portion on which a tow pin is disposed may be formed at an inner center portion of the center portion, and a center hole through which the tow pin is exposed may be formed at a center portion of the center portion.

Furthermore, in an embodiment of the present invention, the primary weight may further include: a center line formed in a projected line shape on an upper portion and a lower portion of an outer side of the central portion, and fixing a position of the sub-weight; and a side groove formed in a recessed shape between the center portion and the side portion, and in which a lamp is disposed.

Further, in the embodiment of the present invention, a battery space portion in which a battery is built may be formed inside the side portion.

Further, in an embodiment of the present invention, the sub weight may be formed with a main body inclined portion inclined upward from an inner side to an outer side at a lower portion of the main body frame.

In addition, in an embodiment of the present invention, the sub-counterweight may further include a fastening beam disposed at the body frame and inserted into the second fastening hole, and the second fitting bolt is inserted into the through hole of the fastening beam and the second fastening hole and couples the main counterweight and the sub-counterweight.

In addition, in an embodiment of the present invention, the secondary weight may further include an opening hole disposed at a position corresponding to the central hole in the body frame and exposing the traction pin.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, the counterweight is assembled to the rear-rear side of the body of the construction machine such as the wheel loader using the assembly bolt, so that the disassembly and the assembly are easy and the maintenance can be smoothly performed.

Further, by configuring a plurality of counter weights and assembling them with each other by means of the mounting bolts, the weight can be easily adjusted in accordance with the load applied to the working machine mounted on the front side of the main body of the construction machine, so that the weight balance of the construction machine can be appropriately maintained.

Further, by rounding the edge of the counterweight and processing the lower portion of the counterweight in a manner to have an inclination, the possibility of collision with the surrounding features during movement or work is reduced, so that the hindrance to work can be minimized.

Drawings

Fig. 1a is a plan view showing a state in which a counterweight of the present invention is mounted on the rear end side of a body of a construction machine.

Fig. 1b is a side view showing a state where the counterweight of the present invention is mounted on the rear end side of the body of the construction machine.

Fig. 2a and 2b are upper side perspective views illustrating the main weight of the present invention.

Fig. 2c is a lower perspective view showing the main weight of the present invention.

Fig. 2d is a plan view showing the primary counterweight of the present invention.

Fig. 2e is a front view showing the primary counterweight of the present invention.

Fig. 2f is a side view showing the primary counterweight of the present invention.

Fig. 2g is a rear view showing the primary counterweight of the present invention.

Fig. 2h is a bottom view illustrating the primary counterweight of the present invention.

Fig. 3a and 3b are upper perspective views illustrating a secondary balance weight of the present invention.

Fig. 3c is a lower perspective view showing the secondary weight of the present invention.

Fig. 3d is a plan view showing the secondary weight of the present invention.

Fig. 3e is a front view showing the secondary weight of the present invention.

Fig. 3f is a side view showing the secondary weight of the present invention.

Fig. 3g is a rear view showing the secondary weight of the present invention.

Fig. 3h is a bottom view showing the secondary weight of the present invention.

Fig. 4a and 4b are upper perspective views illustrating a structure in which a primary weight and a secondary weight of the present invention are combined.

Fig. 4c is a lower perspective view showing a structure in which the primary and secondary weights of the present invention are combined.

Fig. 4d is a plan view showing a structure in which the primary and secondary weights of the present invention are combined.

Fig. 4e is a front view showing a structure in which the primary and secondary weights of the present invention are combined.

Fig. 4f is a side view showing a structure in which the primary and secondary weights of the present invention are combined.

Fig. 4g is a rear view showing a structure in which the primary and secondary weights of the present invention are combined.

Fig. 4h is a bottom view showing a structure in which the primary and secondary weights of the present invention are combined.

Description of the symbols

10: construction machine, 20: a body, 30: front surface portion of rear-rear side of body, 40: pull type fender, 50: fixing frame, 100: counterweight structure for construction machine, 200: main weight, 210: center portion, 211: first assembling bolt, 212: first fastening hole, 213: second fastening hole, 214: central bore, 215: center line, 216: side groove, 220: side portion, 241: center inclined portion, 243: side inclined portion, 245a, 245b, 245 c: round part, 247: first intermediate inclined portion, 248: second intermediate inclined portion, 250: battery space portion, 260: pull type fender mounting portion, 270: kingpin mount, 280: a lamp, 281: lattice beam, 290: towing pin, 300: secondary counterweight, 310: main body frame, 320: open aperture, 330: fastening beam, 331: second assembling bolt, 340: edge taper, 350: a main body inclined portion.

Detailed Description

Preferred embodiments of a counterweight structure of a construction machine according to the present invention will be described in detail below with reference to the accompanying drawings.

The counterweight structure 100 of the construction machine according to the present invention may include a primary counterweight 200 and a secondary counterweight 300.

Referring to fig. 2a to 2h, the main weight 200 may be configured to include a center portion 210, a side portion 220, a battery space portion 250, a pull type fender mounting portion 260, and a tow pin mounting portion 270.

The center portion 210 may be made of a metal material, and may be a portion coupled to the front surface portion 30 (refer to fig. 1a to 1b) of the rear end side of the body 20 of the construction machine 10 by the first mounting bolt 211. Such a center portion 210 may be configured to include a first fastening hole 212, a second fastening hole 213, a center hole 214, a center line 215, and a side groove 216.

A pair of the first fastening holes 212 may be disposed at the center portion 210 with a predetermined interval. The first mounting bolt 211 may be inserted into the first fastening hole 212, and the main weight 200 may be coupled to a front surface portion of a rear-rear side of the construction machine body.

The pair of second fastening holes 213 may be disposed inside the pair of first fastening holes 212 with a predetermined interval. A second fitting bolt 331 may be inserted into the second fastening hole 213 and the sub-weight 300 may be coupled to the main weight 200.

The center hole 214 may be formed through the center portion 210 at a central portion of the center portion 210. Accordingly, the pair of second fastening holes 213 may be disposed on both sides with the center hole 214 as a center, and the pair of first fastening holes 212 may be disposed outside the pair of second fastening holes 213. The traction pin 290 disposed at the inner center portion of the center portion 210 can be exposed to the outside through the center hole 214.

Here, the kingpin installation part 270 may be formed at an inner center portion of the center part 210. The kingpin 290 may be inserted into the kingpin mounting portion 270 and disposed therein.

The center line 215 may be formed in a projected line shape at upper and lower portions at the outer side of the central portion 210. When the secondary weight 300 is coupled to the primary weight 200, the center line 215 may perform a function of fixing the position of the secondary weight 300 when it is inserted into the upper and lower portions.

The side grooves 216 may be connected to the center line 215 and formed between the center portion 210 and the side portions 220 in a concave shape. Further, the mounting portion of the lamp 280 may be disposed inside the side groove 216. The lamp 280 may be disposed at a mounting portion of the lamp 280, and a grill 281 may be mounted at a front surface portion of the lamp 280 to protect the lamp 280.

Next, the side portions 220 may be arranged at both sides of the center portion 210 by being bent, and a pull-type fender mounting portion 260 may be arranged outside the side portions 220 so as to be bolt-fastened to the pull-type fender 40 at the rear side of the body 20 of the construction machine 10 (see fig. 1a to 1 b). A battery space portion 250 in which a battery for supplying power to the construction machine is built may be formed inside the side portion 220.

On the other hand, in order to prevent collision with surrounding features and minimize interference with work during movement or work of the construction machine, the primary counterweight 200 may be configured to further include a center inclined portion 241, side inclined portions 243,

rounded portions

245a, 245b, 245c, a first intermediate inclined portion 247, and a second intermediate inclined portion 248.

Referring to fig. 2e and 2f, the central inclined portion 241 may be formed to be inclined upward from the inside to the outside by a predetermined angle B1 at a lower portion of the central portion 210. In addition, the side inclined portion 243 may be formed at a lower portion of the side portion 220 to be inclined upward from the inside to the outside by a predetermined angle B2.

Since the central inclined portion 241 and the side portion 220 are formed to have an inclined angle, the possibility of collision with the terrain or landscape located at the lower portion of the primary counterweight 200 during movement or work of the construction machine is reduced.

The

rounded portions

245a, 245b, 245c may be formed at each edge of the main weight 200, and the

rounded portions

245a, 245b, 245c may be processed into a smoothly curved shape.

Referring to fig. 2d, the first intermediate inclined part 247 may be formed on the side groove 216 and may be formed to have an inclination toward the rear-rear side at a predetermined angle a1 with reference to the center line 215. In addition, the second intermediate inclined portion 248 may be formed at an outer side of the side portion 220, and may be connected to the first intermediate inclined portion 247. The second intermediate inclined portion 248 may be formed to have an inclination angle a2 greater than the first intermediate inclined portion 247. Since the first intermediate inclined portion 247 and the second intermediate inclined portion are formed stepwise with an inclined angle, the possibility of collision with the peripheral feature at the side of the primary counterweight 200 during movement or work of the construction machine is reduced.

Since the possibility of collision with the terrain or the surrounding terrain located at the side or lower portion of the main counterweight 200 during movement or work of the construction machine is reduced by forming the center inclined portion 241, the side inclined portions 243, the

rounded portions

245a, 245b, 245c, the first intermediate inclined portion 247, and the second intermediate inclined portion 248, it is possible to minimize the hindrance to work.

Next, referring to fig. 3a to 3h, the secondary weight 300 may be constructed of a body frame 310, an open hole 320, a fastening beam 330, an edge tapered portion 340, and a body inclined portion 350.

The main body frame 310 may be made of a metal material, and may be coupled to the main weight 200 by a second mounting bolt 331.

The fastening beam 330 may be formed to protrude in the direction of the main weight 200 from the main body frame 310, and may have a through hole formed in a central portion thereof, into which the second mounting bolt 331 is inserted.

The fastening beam 330 and the second fitting bolt 331 may be inserted together into the second fastening hole 213 of the main weight 200 to couple the sub weight 300 to the main weight 200.

The opening hole 320 may be disposed as a through hole at a central portion of the body frame 310, and in this case, the opening hole 320 may be disposed at a position corresponding to the center hole 214 of the primary weight 200. Accordingly, since the towing pin 290 is exposed through the center hole 214 and the open hole 320, when a necessary condition such as a malfunction occurs in the construction machine, an operator can tow the construction machine by putting a cable into the center hole 214 and the open hole 320 and connecting it to the towing pin 290.

The pair of fastening beams 330 may be disposed on both sides of the opening hole 320.

Referring to fig. 3d, the edge tapered part 340 may be formed to be narrowed at a predetermined angle a3 from the inside to the outside at both sides of the main body frame 310. This is to reduce the possibility of collision with the peripheral feature located at the side of the secondary counterweight 300 during movement or work of the construction machine to minimize hindrance to work.

Next, referring to fig. 3f, the body inclined part 350 may be formed to be inclined at a predetermined angle B3 from an inner side to an outer side and upward at a lower part of the body frame 310. This is to reduce the possibility of collision with the topographic features located at the lower portion of the secondary counterweight 300 during movement or operation of the construction machine to minimize the hindrance to the operation.

Next, referring to fig. 4a to 4h, a state in which the primary weight 200 and the secondary weight 300 are coupled may be confirmed. The fastening beam 330 and the second assembling bolt 331 of the secondary counterweight 300 are inserted into the second fastening hole 213 of the primary counterweight 200 so as to be coupled to each other.

Referring to fig. 4f, the fastening beam 330 and the second assembling bolt 331 are inserted into the second fastening hole 213, so that the inner side of the main body frame 310 of the sub-counterweight 300 can be inserted into the center line 215 of the main counterweight 200 to be fixed in position.

At this time, the inclination angle B1 of the central inclined portion 241 and the inclination angle B3 of the main body inclined portion 350 may be formed at the same angle. Thus, the possibility of collision with the topographic features located at the lower portions of the main weight 200 and the sub weight 300 during movement or operation of the construction machine is reduced at the same rate.

Next, referring to fig. 1a to 1b, a state in which the counterweight structure 10 of the present invention is mounted on the working machine 10 can be confirmed.

The work machine 10 on which the counterweight of the present disclosure is mounted may be a wheel loader. The work machine may be disposed on the front side of the body 20 of the construction machine 10, and the engine may be disposed on the rear side of the body 20. Wheels or crawler belts may be disposed on both sides of the body 20, and pull-type fenders may be disposed to protect the wheels or crawler belts. Further, the fixing frame 50 may be disposed on the pull type fender.

The first mounting bolt 211 may be fastened to the rear front surface portion 30 of the main body 20 to fix the center portion 210 of the main weight 200 to the main body 20.

Further, the fixing frame 50 may be bolted to the pull-type fender mounting portion 260 to fix the side portion 220 of the main weight 200 to the pull-type fender 40.

The operator can separate or mount the sub-counterweight 300 on the main counterweight 200 to achieve weight balance with the working machine.

This can be achieved by separating or fastening the second fitting bolt 331 described above. When weight reduction is required for weight balance, the secondary weight 300 may be separated from the primary weight 200 by separating the second fitting bolt 331, thereby reducing weight.

In contrast, when it is necessary to increase the weight for weight balance, the sub-weight 300 may be added to the main weight 200 by tightening the second fitting bolt 331, thereby adjusting the weight balance.

In addition, as described above, since the center inclined portion 241, the side inclined portion 243, and the body inclined portion are formed, the possibility of collision with a landscape during movement or work of the working machine 10 may be reduced, and since the first intermediate inclined portion 247, the second intermediate inclined portion 248, and the edge tapered portion 340 are formed, the ability of collision with a peripheral landscape located at a side surface of the working machine 10 during movement or work of the working machine may be reduced. This minimizes the hindrance to the work, and improves the work efficiency.

The above only shows a specific embodiment of the counterweight structure of a working machine.

Therefore, it should be understood that those skilled in the art can easily understand that the present invention can be replaced and modified into various forms without departing from the gist of the present invention described in the following claims.

Claims

1. A counterweight structure for construction machinery, comprising:

a main weight including a center portion coupled to a front surface portion of a rear-end side of the construction machine body and side portions bent to be disposed at both sides of the center portion and formed with pull-type fender mounting portions of pull-type fenders coupled to the rear-end side of the construction machine body; and

and a secondary weight including a main frame coupled to the main weight and an edge tapered portion formed at both sides of the main frame to be narrowed from an inner side to an outer side.

2. The counterweight structure of a working machine according to claim 1,

a central inclined part which is inclined upwards from the inner side to the outer side is formed at the lower part of the central part,

a side inclined portion inclined upward from the inside to the outside is formed at a lower portion of the side portion.

3. The counterweight structure of a working machine according to claim 1,

the center portion includes:

a pair of first fastening holes fastened to the first mounting bolts to couple the main counterweight to a front surface portion of the rear side of the construction machine body; and

and a pair of second fastening holes disposed inside the pair of first fastening holes, and fastened to a second mounting bolt to couple the sub-counterweight to the main counterweight.

4. The counterweight structure of a construction machine according to claim 1,

a tow pin mounting part for mounting a tow pin is formed at the inner center part of the center part, and a center hole for exposing the tow pin is formed at the center part of the center part.

5. The counterweight structure of a working machine according to claim 1,

the main weight further includes:

a center line formed in a projected line shape on an upper portion and a lower portion of an outer side of the central portion, and fixing a position of the sub-weight; and

and a side groove formed between the center portion and the side portion in a recessed shape and in which a lamp is disposed.

6. The counterweight structure of a working machine according to claim 1,

a battery space portion in which a battery is built is formed inside the side portion.

7. The counterweight structure of a working machine according to claim 2,

the sub-counterweight is formed with a main body inclined portion inclined upward from the inside toward the outside at a lower portion of the main body frame.

8. The counterweight structure of a construction machine according to claim 3,

the sub-weight further includes a fastening beam disposed at the body frame and inserted into the second fastening hole,

the second fitting bolt is inserted into the through hole of the fastening beam and the second fastening hole, and combines the main weight and the sub weight.

9. The counterweight structure of a working machine according to claim 4,

the sub-weight further includes an opening hole disposed at a position corresponding to the center hole in the body frame and exposing the traction pin.