CN217460701U

CN217460701U - Welding formula movable arm front fork structure

Info

Publication number: CN217460701U
Application number: CN202221478543.0U
Authority: CN
Inventors: 闫家振; 蒙小行; 宗震宇; 刘海栋; 张凯; 王建厂; 徐孟凯; 刘虹
Original assignee: LOVOL Engineering Machinery Group Co Ltd
Current assignee: Lovol Heavy Industry Group Co ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-09-20
Anticipated expiration: 2032-06-14

Abstract

The utility model relates to an excavator technical field just discloses a welding formula movable arm front fork structure, including front fork board, bent plate, interior gusset, outer flitch and interior flitch, front fork board has two, and two front fork boards pass through the bent plate and connect, and the middle part of bent plate inner chamber is connected with interior gusset, the outside of front fork board is connected with outer flitch, the inboard that the one end of bent plate was kept away from to front fork board is connected with interior flitch. This welding formula swing arm front fork structure, simple structure, panel are bent and the unloading is more convenient, can improve production efficiency, and when whole swing arm group was to the rivet welding, butt joint clearance controllability between the panel was high, and welding quality is higher. The front fork plate and the bent plate are provided with the transition inclined plane and the welding seam groove, welding is convenient, the penetration is increased, the stress concentration of the welding seam is reduced, and the structure is convenient to produce and use.

Description

Welding formula movable arm front fork structure

Technical Field

The utility model relates to an excavator technical field specifically is a welding formula movable arm front fork structure.

Background

The movable arm is an important structural part in the excavator, and the connection part of the front fork of the movable arm and the hinge point of the root part of the bucket rod is a key stress point. The reliability of the front fork structure directly affects the service life of the excavator working device. For the movable arm front fork with the excavator movable arm front fork of a steel casting structure, the structure is complex, casting is difficult, casting defects are easily generated in the material, the performance of parts is influenced, the surface of a casting is rougher compared with the machined surface, a large gap is easily generated when the whole movable arm group is riveted and welded, and welding quality is influenced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a welding formula swing arm front fork structure possesses simple structure, and it is more convenient that panel bends and the unloading, and production efficiency can improve, and when whole root swing arm group was to the rivet welding, butt joint clearance controllability is high between the panel, and the higher advantage of welding quality has solved the problem of proposing among the above-mentioned background art.

The utility model provides a following technical scheme: the utility model provides a welded movable arm front fork structure, includes front fork board, bent plate, interior gusset, outer flitch and interior flitch, the front fork board has two, and two front fork boards pass through the bent plate and connect, and the middle part of bent plate inner chamber is connected with interior gusset, the outside of front fork board is connected with outer flitch, the inboard that the one end of bent plate was kept away from to the front fork board is connected with interior flitch.

Preferably, the middle part of one end of the front fork plate far away from the bent plate is provided with a front end hole, the other end of the front fork plate is provided with a first transition inclined plane and a first welding seam groove, the first welding seam groove is close to the bent plate, and the front fork plate and the bent plate are made of plates.

Preferably, the upper end and the lower end of the bent plate are both provided with a second transition inclined surface and a second welding seam groove, and the second welding seam groove is positioned on the inner side of the second transition inclined surface.

Preferably, the shape of the inner flitch is circular ring-shaped, a through hole is formed in the middle of one end, far away from the bent plate, of the outer flitch, centers of the through hole, the front end hole and the inner flitch are located on the same straight line, and the outline of the end of the outer flitch is the same as that of the end of the front fork plate.

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. this welding formula swing arm front fork structure, simple structure, panel are bent and the unloading is more convenient, can improve production efficiency, and when whole swing arm group was to the rivet welding, butt joint clearance controllability between the panel was high, and welding quality is higher.

2. This welding formula moves arm front fork structure forms through five kinds of parts welding of two front forks boards, bent plate, interior gusset, outer flitch and interior flitch, and all is equipped with transition inclined plane and welding seam groove on front forks board and bent plate, conveniently welds, increases the penetration, reduces welding seam stress concentration, the production and the use of this structure of being convenient for.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic view of the front view of the structure of the present invention;

FIG. 3 is a schematic top view of the structure of the present invention;

fig. 4 is a schematic sectional view of the structure of fig. 2;

fig. 5 is an enlarged schematic view of the front fork plate of the present invention.

In the figure: 1. a front fork plate; 2. bending a plate; 3. an inner rib plate; 4. an outer pasting plate; 5. an inner pasting plate; 6. welding seam groove II; 7. a second transition inclined plane; 8. a first transition inclined plane; 9. and (5) welding a first groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, 2 and 5, the welded movable arm front fork structure comprises a front fork plate 1, a bent plate 2, an inner rib plate 3, two outer attachment plates 4 and an inner attachment plate 5, wherein the front fork plate 1 bears main loads, a front end hole is formed in the middle of one end of the front fork plate 1 and used for being connected with a bucket rod of an excavator, a plate thickness transition inclined plane I8 and a welding seam groove I9 are designed on the rear side of the front fork plate 1, and the front fork plate 1 is made of a plate material.

Referring to fig. 1, 2 and 4, two front fork plates 1 are connected through a bent plate 2, the two front fork plates 1 are located on the left side and the right side of the bent plate 2, the bent plate is used for connecting the left front fork plate 1 and the right front fork plate 1, the bent plate 2 is folded into a V-shaped or arc plate structure by a plate, the strength and the rigidity of the whole front fork can be effectively enhanced, a transition inclined plane two 7 and a welding seam groove two 6 are also arranged on the upper end portion and the lower end portion of the bent plate 2, the welding seam groove two 6 is located on the inner side of the transition inclined plane two 7, a welding seam groove one 9 on the front fork plate 1 is close to the bent plate 2, the transition inclined plane one 8, the welding seam groove one 9, the welding seam groove two 6 and the transition inclined plane two 7 are arranged, welding is convenient, the penetration is increased, and the stress concentration of the welding seam is reduced.

The middle part of the inner cavity of the bent plate 2 is connected with an inner rib plate 3, and the strength of the bent plate 2 is increased through the arrangement of the inner rib plate 3, so that the front fork structure is convenient to use.

Referring to fig. 1 to 3, an outer attachment plate 4 is connected to the outer side of a front fork plate 1, an inner attachment plate 5 is connected to the inner side of one end, away from a bent plate 2, of the front fork plate 1, a front end hole is formed in the middle of one end, away from the bent plate 2, of the front fork plate 1, the inner attachment plate 5 is circular, a through hole is formed in the middle of one end, away from the bent plate 2, of the outer attachment plate 4, centers of the through hole, the front end hole and the inner attachment plate 5 are located on the same straight line, the outline of the end of the outer attachment plate 4 is the same as that of the end of the front fork plate 1, welding is facilitated, the other end of the outer attachment plate 4 is designed to be of a structure similar to the bending outline of the bent plate 2, and further structure can be reinforced.

The working principle is as follows: when the novel welding plate is used, the novel welding plate is formed by welding five parts, namely the front fork plate 1, the bent plate 2, the inner rib plate 3, the outer flitch plate 4 and the inner flitch plate 5, and has the advantages of simple structure, easiness in production, small plate defect and higher quality guarantee; when the whole movable arm assembly is subjected to rivet welding, the controllability of butt joint gaps among the plates is high, and the welding quality is higher.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims

1. The utility model provides a welding formula movable arm front fork structure which characterized in that: including preceding fork board (1), bent plate (2), interior gusset (3), outer flitch (4) and interior flitch (5), preceding fork board (1) has two, and two preceding fork boards (1) are connected through bent plate (2), and the middle part of bent plate (2) inner chamber is connected with interior gusset (3), the outside of preceding fork board (1) is connected with outer flitch (4), the inboard of the one end that bent plate (2) were kept away from in preceding fork board (1) is connected with interior flitch (5).

2. The welded type moving arm front fork structure as claimed in claim 1, wherein: the middle part of the one end of bent plate (2) is kept away from in front fork board (1) is equipped with the front end hole, the other end of front fork board (1) is equipped with transition inclined plane (8) and welding seam groove (9), and welding seam groove (9) are close to bent plate (2), the material of front fork board (1) and bent plate (2) is panel.

3. A welded type boom fork structure according to claim 1, wherein: and the upper end and the lower end of the bent plate (2) are both provided with a second transition inclined plane (7) and a second welding seam groove (6), and the second welding seam groove (6) is positioned on the inner side of the second transition inclined plane (7).

4. The welded type moving arm front fork structure as claimed in claim 2, wherein: the shape of the inner flitch (5) is circular, a through hole is formed in the middle of one end, far away from the bent plate (2), of the outer flitch (4), the centers of the through hole, the front end hole and the inner flitch (5) are located on the same straight line, and the outline of the end of the outer flitch (4) is the same as that of the end of the front fork plate (1).