CN207812530U - Rock arm with multilayered structure forearm - Google Patents

Abstract

The utility model discloses a kind of rock arm with multilayered structure forearm, including large arm, forearm；The large arm is hinged with excavator, and is driven by big arm cylinder；The forearm is hinged with large arm, and the oil cylinder of small arm by being connected in large arm and forearm drives；Toothholder is fixed on forearm lower end, and bucket tooth is mounted on the toothholder；The forearm is laminated by multilayer steel plates.The utility model is simple in structure, it is relatively low to excavate deeper and cost.

Description

Rock arm with multilayered structure forearm

Technical field

It is the utility model is related to a kind of rock arm of installation on board a dredger, more particularly to a kind of with multi-layer structure small The rock arm of arm.

Background technology

Rock arm is mounted on excavator, the sharp weapon for being crushed the hard ground such as land waste, page rock, red sandstone. 204875899 U of Chinese patent CN disclose a kind of rock arm configuration, including large arm, forearm, ridge buster, big arm cylinder, forearm oil Cylinder and ridge buster oil cylinder, the large arm is hinged with forearm, the forearm lower end and ridge buster upper articulation, the ridge buster The cylinder body end of oil cylinder is hinged with forearm, and driving rod end is hinged with ridge buster, and the cylinder body end and large arm of the oil cylinder of small arm are hinged. This rock arm forearm is hinged with ridge buster, and ridge buster needs ridge buster hydraulic oil cylinder driving, and seeming can allow ridge buster flexible, practical Only play a supporting role.Moreover, because the presence of ridge buster and ridge buster oil cylinder so that excavating depth is by larger limit System.

Utility model content

The technical problem to be solved by the utility model is in view of the deficiencies of the prior art, provide it is a kind of it is simple in structure, Excavate deeper, the lower-cost rock arm with multilayered structure forearm.

To achieve the above object, the utility model uses following technological means：

The utility model provides a kind of rock arm with multilayered structure forearm, including large arm, forearm；The large arm and digging Pick machine is hinged, and is driven by big arm cylinder；The forearm is hinged with large arm, and the oil cylinder of small arm by being connected in large arm and forearm Driving；Toothholder is fixed on forearm lower end, and bucket tooth is mounted on the toothholder；The forearm is laminated by multilayer steel plates.

The beneficial effects of the utility model：The utility model eliminates ridge buster, while also eliminating ridge buster oil cylinder, makes Toothholder is directly anchored to forearm lower end, has lacked conventional rock arm ridge buster and ridge buster does not have the blocking of cylinder, excavating depth deeper.Together When, if forearm uses monoblock steel plate, manufacturing cost is higher, and the forearm of the utility model is laminated using multilayer steel plates, is relatively adopted Cost has been saved with the forearm of monoblock steel plate.

Description of the drawings

Fig. 1 is the schematic diagram of the rock arm installation of the utility model on board a dredger.

Fig. 2 is rock arm forearm leftschematic diagram shown in FIG. 1.

Specific implementation mode

Below in conjunction with the accompanying drawings and specific embodiment is described further the utility model.

It is right below in conjunction with the accompanying drawings in order to which the purpose of this utility model, technical solution and advantageous effect is more clearly understood The utility model is described further.However the utility model can be realized in many different forms, and should not be construed as It is limited by the embodiment herein proposed.On the contrary, proposing that these embodiments are to reach abundant and complete disclosure, and make this technology The technical staff in field understands the scope of the utility model completely.In these attached drawings, it is high-visible, may be exaggerated the areas Ceng Ji The size and relative size in domain.

The utility model provides a kind of rock arm with multilayered structure forearm, as shown in Figure 1, including large arm 1, forearm 2； The large arm 1 is hinged with excavator, and is driven by big arm cylinder 3；The forearm 2 is hinged with large arm 1, and by being connected to large arm 1 It is driven with the oil cylinder of small arm 4 on forearm 2；Toothholder 5 is fixed on 2 lower end of forearm, and bucket tooth 6 is mounted on the toothholder 5.The forearm 2 are laminated by multilayer steel plates, as shown in Fig. 2, being laminated by four layers of steel plate 7,8,9,10 in the present embodiment.As shown in Fig. 2, Stacking direction is parallel to paper, naturally it is also possible to is laminated along other directions.

The utility model eliminates ridge buster, while also eliminating ridge buster oil cylinder, and toothholder is made to be directly anchored under forearm End, has lacked conventional rock arm ridge buster and ridge buster does not have the blocking of cylinder, excavating depth deeper.Meanwhile as forearm uses monoblock steel Plate, manufacturing cost is higher, and the forearm of the utility model is laminated using multilayer steel plates, relatively uses the forearm saving of monoblock steel plate Cost.

Claims (1)

1. a kind of rock arm with multilayered structure forearm, it is characterised in that：Including large arm, forearm；The large arm and excavator It is hinged, and driven by big arm cylinder；The forearm is hinged with large arm, and the oil cylinder of small arm by being connected in large arm and forearm drives It is dynamic；Toothholder is fixed on forearm lower end, and bucket tooth is mounted on the toothholder；The forearm is laminated by multilayer steel plates.