CN213173908U

CN213173908U - Connecting structure of violent arm

Info

Publication number: CN213173908U
Application number: CN202021826202.9U
Authority: CN
Inventors: 吕波
Original assignee: Chengdu Zhongduo Intelligent Technology Co ltd
Current assignee: Chengdu Zhongduo Intelligent Technology Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-05-11
Anticipated expiration: 2030-08-27

Abstract

The utility model discloses a connecting structure of a violent arm, which relates to the field of engineering machinery and comprises an oil cylinder and a cylinder body protecting piece, wherein a piston rod of the oil cylinder can be rotatably arranged on a small arm, and a cylinder body of the oil cylinder can be rotatably arranged on a cutting board; the traditional installation mode of installing the piston rod on the cutting board is changed by reversely installing the oil cylinder, the piston rod is installed above, and when rocks are crushed, the penetration of a violent arm cannot cause the piston rod to be contacted with the rocks, so that the piston rod is not easy to damage, the sealing performance of the oil cylinder is ensured, meanwhile, the strength of the cylinder body is greater than that of the piston and is not easy to be damaged by the rocks, the smoothness of the outer surface of the cylinder body is not required, but the oil cylinder has certain requirements on the smoothness of the side surface of the piston rod when being normally used; and meanwhile, the cylinder body protecting piece is fixedly arranged on the outer side wall of the cylinder body, and when the cylinder body protecting piece is used for avoiding collision and friction between the outer side wall of the cylinder body and an external object, the degree of abrasion of the cylinder body when the cylinder body is in rock contact is reduced.

Description

Connecting structure of violent arm

Technical Field

The utility model relates to an engineering machine tool field especially relates to a connection structure of violent arm.

Background

With the increasing variety of the attachments of the excavator, the excavator is more and more widely applied to various construction sites in different industries, so that various construction operations can be efficiently completed, the excavator can complete various operation requirements by assembling various attachments, the excavation and loading of earthwork can be completed by the bucket, the efficiency of the earthwork operation is greatly improved, but when a hard soil layer, weathered rocks and frozen soils need to be excavated, the efficiency is low, the excavation operation can not be completed sometimes, the violent arm is just suitable for the construction of a working condition, the violent arm can rapidly load the earthwork by the common bucket after the violent arm crushes the rock layer, so that the violent arm is widely applied to the working conditions of building construction and the like, the piston rod of the oil cylinder is traditionally arranged on the cutter plate, and when the rocks are crushed, the rocks collide the surface of the piston rod, The scratch and the abrasion reduce the sealing performance of the oil cylinder, influence the normal use of the oil cylinder, and the rock can bend the piston rod, so that the oil cylinder cannot be used continuously.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to provide a connection structure for a violent arm in order to solve the above problems.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

a connecting structure of a violent arm is used for connecting a cutting board and a small arm and comprises an oil cylinder, wherein a piston rod of the oil cylinder is rotatably arranged on the small arm, and a cylinder body of the oil cylinder is rotatably arranged on the cutting board.

Further, the connecting structure of the violent arm further comprises at least one cylinder protecting piece, the cylinder protecting piece is of an annular structure, each cylinder protecting piece is wrapped on the outer side wall of the cylinder, and the inner side face of each cylinder protecting piece and the outer side wall of the cylinder are mutually pressed and fixed.

The beneficial effects of the utility model reside in that: by the way of reversely mounting the oil cylinder, the traditional mounting mode of mounting the piston rod on the cutting board is changed, the piston rod is mounted above, when rock is crushed, the depth of the violent arm is not enough to enable the piston rod to be in contact with the rock, so that the piston rod is not easy to damage, the sealing performance of the oil cylinder is ensured, meanwhile, the strength of the cylinder body is greater than that of the piston, the cylinder body is not easy to be damaged by rocks, the smoothness of the outer surface of the cylinder body is not required, but the normal use of the oil cylinder has certain requirements on the smoothness of the side surface of the piston rod, so that the normal use of the oil cylinder cannot be influenced even if the cylinder body is slightly abraded by rocks, and at least one cylinder body protecting piece is fixedly arranged on the outer side wall of the cylinder body, when performing work, the cylinder protector serves to avoid collision and friction between the outer side wall of the cylinder and a foreign object, reducing the degree to which the cylinder is worn when in rock contact.

Drawings

Fig. 1 is a schematic structural view of a connection structure of a violent arm of the present invention;

wherein corresponding reference numerals are:

1-knife board, 2-small arm, 3-piston rod, 4-cylinder and 5-cylinder protector.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The following describes in detail embodiments of the present invention with reference to the accompanying drawings.

As shown in figure 1, the connecting structure of the violent arm is used for connecting a knife board 1 and a small arm 2 and comprises an oil cylinder, wherein a piston rod 3 of the oil cylinder is rotatably arranged on the small arm 2, and a cylinder body 4 of the oil cylinder is rotatably arranged on the knife board 1.

The connecting structure of the violent arm further comprises at least one cylinder protecting piece 5, wherein the cylinder protecting piece 5 is used for avoiding collision and friction between the outer side wall of the cylinder 4 and a foreign object when operation is carried out, the cylinder protecting piece 5 is of an annular structure, each cylinder protecting piece 5 is wrapped on the outer side wall of the cylinder 4, and the inner side surface of each cylinder protecting piece 5 and the outer side wall of the cylinder 4 are mutually extruded and fixed.

The connecting structure of the violent arm further comprises two cylinder body protecting pieces 5, the two cylinder body protecting pieces 5 are annularly wrapped at one end, far away from the piston rod 3, of the outer side wall of the cylinder body 4, the inner side faces of the two cylinder body protecting pieces 5 and the outer side wall of the cylinder body 4 are mutually extruded and fixed, threaded holes are formed in two ends of each cylinder body protecting piece 5, and the two cylinder body protecting pieces 5 are fixedly connected through bolts.

The cylinder is reversely arranged, the traditional installation mode of installing the piston rod 3 on the cutting board 1 is changed, the piston rod 3 is installed above, when rocks are broken, the depth of a violent arm is not enough to enable the piston rod 3 to be in contact with the rocks, therefore, the piston rod 3 is not easy to damage, the sealing performance of the cylinder is ensured, meanwhile, the strength of the cylinder body 4 is greater than that of the piston and is not easy to be damaged by the rocks, the normal use of the cylinder does not have requirements on the smoothness of the outer surface of the cylinder body 4, but the normal use of the cylinder has certain requirements on the smoothness of the side surface of the piston rod 3, therefore, even if the cylinder body 4 is slightly abraded by the rocks, the normal use of the cylinder is not influenced, meanwhile, at least one cylinder body protecting piece 5 is fixedly arranged on the outer side wall of the cylinder body 4, and when the operation is carried out, the cylinder body protecting piece 5 is, the extent to which the cylinder 4 is worn when in rock contact is reduced.

The technical scheme of the utility model is not limited to the restriction of above-mentioned specific embodiment, all according to the utility model discloses a technical scheme makes technical deformation, all falls into within the protection scope of the utility model.

Claims

1. A connecting structure of a violent arm, which is used for connecting a knife board and a small arm, is characterized in that: the cutting tool comprises an oil cylinder, a piston rod of the oil cylinder is rotatably arranged on a small arm, and a cylinder body of the oil cylinder is rotatably arranged on a cutting board.

2. A blast arm attachment structure according to claim 1, wherein: the connecting structure of the violent arm further comprises at least one cylinder body protecting piece, wherein the cylinder body protecting piece is of an annular structure, each cylinder body protecting piece wraps the outer side wall of the bucket cylinder body, and the inner side face of each cylinder body protecting piece and the outer side wall of the bucket cylinder body are mutually extruded and fixed.