CN218204668U - Counter weight and excavator for excavator - Google Patents

Abstract

The utility model relates to a counter weight for excavator is difficult to the problem of configuration installation on the limited excavator in some spaces for solving current filling counter weight relative density, the utility model discloses construct a counter weight for excavator and excavator, wherein the counter weight for excavator includes the filling counter weight, its characterized in that iron counterweight plate has been arranged at the top of filling counter weight, iron counterweight plate shape and its pass through bolt of filling counter weight top surface shape looks adaptation with filling counter weight top surface fixed connection. In this embodiment excavator, the counter weight is compared for traditional filling counter weight and cast iron counter weight, adopts the scheme of compromising, to same volume filling counter weight, the utility model discloses the counter weight has the weight advantage, to the cast iron counter weight of same weight, the utility model discloses the counter weight has advantage with low costs.

Description

Counter weight and excavator for excavator

Technical Field

The utility model relates to a counter weight, more specifically say, relate to a counter weight and excavator for excavator.

Background

And a counterweight is arranged at the rear part of the revolving platform of the excavator and is used for balancing a working device at the front part of the revolving platform. The existing counter weights mainly comprise two types, one is a cast iron counter weight, and the other is a filling counter weight.

The cast iron counterweight is cast by molten iron, the finished product has high density, and a counterweight with smaller volume and larger weight is formed in the manufacturing process. Cast iron counter weights involve cast grinding tools, molten iron melting, ferrous casting materials and the like during production and manufacturing, and are high in cost.

The filling weight is an iron shell as a container, and concrete is poured in the iron shell. The manufacturing cost and the material cost of the cast iron are lower than those of cast iron, so the cast iron is widely applied to excavators. However, since the density of concrete is smaller than that of cast iron, the volume of the filling counterweight is much larger than that of a cast iron counterweight for the counterweight with the same weight, so that the filling counterweight is difficult to install on some excavators with limited installation space.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is that current filling counter weight relative density is little to be difficult to dispose the problem of installation on the limited excavator in some spaces, and provides a counter weight and excavator for the excavator.

The utility model discloses a realize that the technical scheme of its purpose is like: the counterweight for the excavator comprises a filling counterweight and is characterized in that an iron counterweight plate is arranged at the top of the filling counterweight, and the iron counterweight plate is matched with the filling counterweight top surface in shape through a bolt and is fixedly connected with the filling counterweight top surface.

The utility model discloses in, the counter weight comprises filling counter weight and iron counterweight plate, and this counter weight has low in manufacturing cost's advantage for the cast iron counter weight, then has the advantage that density is big for the filling counter weight, is convenient for dispose the installation on the limited machine in space.

The utility model discloses in the counter weight for the excavator, the iron counterweight plate comprises polylith iron plate range upon range of from top to bottom. The iron counterweight plate can be formed by cutting a steel iron plate, and the processes of manufacturing a casting grinding tool, molten iron and the like in the traditional cast iron counterweight manufacturing process are not needed, so that the manufacturing cost is reduced.

The utility model discloses in the counter weight for the excavator, curb plate and posterior lateral plate all bulge top surface shrouding and convex highly equal about filling counter weight casing the height of iron counterweight plate. After the counter weight installation, its leading flank is towards engine compartment, and is the invisible side usually, curb plate and the curb plate arch that makes progress about the casing for shelter from iron counterweight plate about and the trailing flank, make the neat and artistic counter weight outward appearance.

The utility model discloses in the counter weight for the excavator, the welding of top shrouding downside of filling counter weight has many strengthening ribs. The top sealing plate of the filling weight is a flat plate, and its thickness is usually limited. The inside canning thing of filling counter weight has the clearance between inside canning thing top and the top surface shrouding after the filling, and when placing the iron counterweight plate on the top surface shrouding, the iron counterweight plate probably bends the top surface shrouding and warp, and then leads to the welding seam fracture between top surface shrouding and the curb plate. Set up the strengthening rib at the shrouding downside, improve the intensity of top surface shrouding and improve its bearing capacity. Furthermore, the bottom of the reinforcing bar is free from play with the inner potting compound in the filling weight, i.e. the bottom face of the reinforcing bar is connected in contact with the inner potting compound, or the bottom of the reinforcing bar is located in the inner potting compound. Gapless between inside canned thing and the strengthening rib for inside canned thing can support the top surface shrouding through the strengthening rib, improves the bearing capacity of top surface shrouding.

The utility model discloses in the counter weight for the excavator, bolt lower extreme fixed connection department has arranged the strengthening rib to make bolt arrangement department have sufficient intensity in order to lock the iron counterweight plate.

The top shrouding of filling counter weight with bolt lower extreme fixed connection department welding has the strengthening rib, the strengthening rib is located the downside of shrouding.

The utility model discloses in the counter weight for the excavator, the lower extreme of bolt with the shrouding welds mutually, and the screw thread end on its top passes hole on the iron counterweight plate is connected with the lock nut cooperation

The utility model discloses in the counter weight for the excavator, can also be set up on the shrouding with bolt thread end complex screw hole, the screw thread end of bolt pass the hole on the iron counterweight plate and be connected with screw hole screw-thread fit, fix the iron counterweight plate on the filling counter weight. The bolt is in the iron counterweight plate stacks and installs after the filling counter weight, can avoid iron counterweight plate to bump bad bolt in the iron counterweight plate installation. Furthermore, a plurality of guide positioning columns protruding upwards are arranged on the sealing plate, and a plurality of guide positioning holes matched with the guide positioning columns are formed in the iron counterweight plate. When the iron counterweight plate is installed, the guide positioning columns are matched with the guide positioning holes, so that holes for bolts to penetrate through on the iron counterweight plate are accurately aligned with threaded holes in the sealing plate.

The utility model discloses a realize that the technical scheme of its purpose is like: the excavator is characterized in that the counterweight for the excavator is mounted at the rear part of the rotary platform.

Compared with the prior art, the utility model, in counter weight and the excavator for the excavator, the counter weight is compared for filling counter weight and cast iron counter weight, adopts the scheme of compromising, and to the counter weight of same volume, its manufacturing cost is lower than the cast iron counter weight, and weight ratio filling counter weight is big.

Drawings

Fig. 1 is a schematic structural diagram of the counterweight of the present invention.

Fig. 2 is a schematic sectional view of the filling weight of the present invention.

Part names and serial numbers in the figure:

filling weight 10, filling concrete 11, closing plate 12, reinforcing rib 13, right side plate 14, rear side plate 15, positioning guide post 16, iron weight plate 20 and bolt 30.

Detailed Description

The following description of the embodiments refers to the accompanying drawings.

Fig. 1 shows the utility model provides an install the counter weight at rotary platform rear portion on the excavator, this counter weight includes filling weight 10, has arranged iron counterweight plate 20 at filling weight 10's top, and iron counterweight plate 20 shape and filling weight 10 top surface shape looks adaptation just pass through bolt 30 and filling weight 10 top surface shrouding fixed connection.

The shape of ferrous weight plate 20 and the shape of the top surface of the filling weight means that the projected shape of ferrous weight plate 20 at the top of the filling weight is substantially the same as the shape of the top of filling weight 10, with no peripheral edges protruding the side profile of the filling weight.

The iron balance weight plate 20 is formed by cutting a steel plate, and processes of manufacturing a casting grinding tool, molten iron and the like in the traditional cast iron balance weight manufacturing process are not needed, so that the manufacturing cost is reduced.

The iron weight plate 20 is formed by stacking a plurality of iron plates one on top of the other, and the number of layers of the iron plates is determined by the thickness of the iron plate and the required thickness of the iron weight plate.

As shown in fig. 2, right side plate 14, left side plate (not shown) and rear side plate 15 of the housing of filling weight 10 protrude above top closure plate 12 by a height equal to the height of ferrous weight plate 20. After the counterweight is installed, the front side face of the counterweight faces the engine compartment and is a normally invisible face, and the left side plate, the right side plate and the rear side plate of the shell are upwards protruded and used for shielding the left side face, the right side face and the rear side face of the iron counterweight plate 20, so that the appearance of the counterweight is neat and attractive.

A plurality of reinforcing ribs 13 are welded on the lower side of the top sealing plate 12 of the filling counterweight 10, and threaded holes are arranged at the arrangement positions of partial reinforcing ribs 13. The threaded end of the bolt 30 passes through the hole on the iron counterweight plate 20 to be in threaded fit connection with the threaded hole, so that the iron counterweight plate 20 is fixed on the filling counterweight. The bolt 30 is installed after the iron counterweight plates are stacked on the filling counterweight, so that the problem that the iron counterweight plates damage the bolt in the installation process of the iron counterweight plates can be avoided.

The reinforcing ribs are arranged on the lower side of the sealing plate, the strength of the top surface sealing plate is improved, the bearing capacity of the top surface sealing plate is improved, no gap exists between the bottoms of the reinforcing ribs and the filled concrete 11 in the filling balance weight, namely the bottom surfaces of the reinforcing ribs are in contact connection with the surface of the filled concrete, or the bottoms of the reinforcing ribs are positioned in the filled concrete. Gapless between filling concrete and the strengthening rib for filling concrete can support the top surface shrouding through the strengthening rib, improves the bearing capacity of top surface shrouding.

As shown in fig. 2, the closing plate 12 is provided with a plurality of guiding positioning posts 16 protruding upwards, and the iron weight plate is provided with a plurality of guiding positioning holes matching with the guiding positioning posts. When the iron counterweight plate is installed, the guide positioning columns are matched with the guide positioning holes, so that holes for bolts to penetrate through on the iron counterweight plate are accurately aligned with threaded holes in the sealing plate.

In this embodiment, the lower end of the bolt 30 may also be welded to the sealing plate, and the threaded end of the top end thereof passes through the hole on the iron counterweight plate to be connected with the locking nut in a matching manner.

In this embodiment, the filling weight is mounted on the revolving platform of the excavator by fixedly connecting the mounting seat at the bottom of the filling weight with the revolving platform. In this embodiment excavator, the counter weight is compared for traditional filling counter weight and cast iron counter weight, adopts the scheme of compromising, to same volume filling counter weight, the utility model discloses the counter weight has the weight advantage, to the cast iron counter weight of same weight, the utility model discloses the counter weight has advantage with low costs.

Claims (10)

1. The utility model provides a counter weight for excavator, includes the filling counter weight, its characterized in that iron weight plate has been arranged at the top of filling counter weight, iron weight plate shape and filling counter weight top surface shape looks adaptation, and through the bolt with filling counter weight top surface shrouding fixed connection.

2. The counterweight for an excavator according to claim 1 wherein said iron weight plate is formed by stacking a plurality of iron plates one on top of the other.

3. The excavator weight of claim 1 wherein the fill weight housing left and right side plates and the rear side plate each protrude beyond the top closure plate by a height equal to the height of the ferrous weight plate.

4. A counterweight as recited in any one of claims 1 to 3 in which a plurality of reinforcing bars are welded to the underside of the top closure plate of the filling weight.

5. The counterweight for an excavator of claim 4 wherein the bottom portion of said reinforcing bar is free of clearance from the internal potting in said filler weight.

6. The counterweight for excavator according to claim 4 wherein said reinforcing rib is disposed at a fixed connection position of said top surface closing plate and said lower end of said bolt.

7. The counterweight of claim 6 in which said bolt is welded at its lower end to said cover plate and has a threaded end at its top end which is received in a locking nut through an aperture in said ferrous weight plate.

8. The counterweight of claim 6 wherein said plate has a threaded opening for receiving a threaded end of said bolt.

9. The counterweight for excavator as claimed in claim 8, wherein said sealing plate is provided with a plurality of upwardly projecting guide positioning posts, and said iron counterweight plate is provided with a plurality of guide positioning holes engaged with said guide positioning posts.

10. An excavator, characterized in that a counterweight for excavator according to any one of claims 1 to 7 is mounted on the rear part of a revolving platform.

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