CN202175968U

CN202175968U - Enhanced excavator movable arm

Info

Publication number: CN202175968U
Application number: CN 201120270372
Authority: CN
Inventors: 王健; 苏贵平; 韦天山; 郝鹏祥; 程昌伦
Original assignee: Guizhou Jonyang Kinetics Co Ltd
Current assignee: Guizhou Jonyang Kinetics Co Ltd
Priority date: 2011-07-28
Filing date: 2011-07-28
Publication date: 2012-03-28
Anticipated expiration: 2021-07-28

Abstract

The utility model discloses an enhanced excavator movable arm which belongs to engineering machinery and aims to provide an excavator movable arm with long service life and good continuous operating performance. The enhanced excavator movable arm comprises a box body, wherein the box body is composed of a casing pipe (20), a bearing seat (1), two rear side plates (2), two middle side plates (5), two front side plates (8), two side plates (9), upper and lower back cover plates (19,14), upper and lower middle cover plates (15,12), upper and lower front cover plates (16,11) and a V-shaped plate (17); two oil cylinder seats (4) are respectively welded on the two middle side plates (5); two ear plates (6) are welded on the upper middle cover plate (15) and the upper front cover plate (16); a second rib plate (10) is welded between the two side plates (9); and a first rib plate (3), a third rib plate (7) and a fourth rib plate (13) are welded between the two middle side plates (5). The enhanced excavator movable arm has the advantages of high strength and good rigidity and can be used for meeting the requirement of continuous operation.

Description

Reinforced excavator swing arm

Technical field: the utility model relates to a kind of excavator, relates in particular to a kind of excavator swing arm.

Background technology: swing arm is one of three big ingredients of digger operating device, and its front end and dipper are hinged, rear end and revolving dial are hinged; The flexible swing arm that can make of two boom cylinders is around realizing various excavations actions with the pin joint rotation of revolving dial.At present, common swing arm is when the long-time continuous operation, and bearing support and pin joint be because of fatigue failure takes place easily in the continuous impact that receives fluctuating load, cracks or ruptures.

Summary of the invention: to the above-mentioned defective that exists in the prior art, the reinforced excavator swing arm that the utility model aims to provide a kind of long service life, the performance of working continuously is good.

To achieve these goals; The utility model adopts following technical scheme: it comprises the body of box structure; This body by sleeve pipe, respectively be welded on the bearing support at these sleeve pipe two ends, separately and two back side panels of respective shaft bearing welding, separately be welded on two latus inframediums of this two back side panels right-hand member, separately be welded on two front side boards of this two latus inframediums right-hand member, separately be welded on two blocks of side plates of this two front side boards right-hand member, respectively be welded on two back side panel tops and bottom and and the last back shroud and the following back shroud of bearing support welding, be welded on two latus inframedium tops and and the middleupper cover plate of last back shroud welding, be welded on two latus inframedium bottoms and and the following cover plate of following back shroud welding, be welded on two front side board tops and and the last front shroud that welds of middleupper cover plate, be welded on two latus inframedium bottoms and and the following front shroud that welds of following cover plate, be welded between the biside plate and constitute with V-type plate 17 that the cover plate of going forward welds; Two oil cylinder seats are welded on respectively on two latus inframediums and through the axle sleeve welding and are connected as a single entity, and on middleupper cover plate and last front shroud, are welded with two otic placodes; Second gusset is welded between the biside plate, between two latus inframediums, is welded with first gusset, the 3rd gusset and the 4th gusset respectively.

With prior art relatively, the utility model has been owing to adopted technique scheme, in the set inside of swing arm body polylith strengthen gusset, therefore disperseed the stress of each pin joint of swing arm effectively, eliminated the phenomenon that stress is concentrated; Not only improve the stressing conditions of bearing support and pin joint effectively, but also improved the steadiness of boom structure, thereby thoroughly overcome the defective of damaging in the situation downward moving arm easy fatigue of long-time continuous operation.

Description of drawings:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the vertical view of Fig. 1.

Among the figure: back shroud 19 sleeve pipes 20 on front shroud 16V template 17 axle sleeves 18 on 13 times back shrouds of bearing support 1 back side panel 2 first gussets, 3 oil cylinder seat 4 latus inframediums, 5 otic placode 6 the 3rd gusset 7 front side board 10 times front shrouds of 8 side plates, 9 second gussets 11 times cover plate 12 the 4th gussets, the 14 middleupper cover plates 15

The specific embodiment: the utility model is described further below in conjunction with accompanying drawing and concrete embodiment:

In Fig. 1～2, the bearing support 1, two that the body of box structure is welded on these sleeve pipe two ends by sleeve pipe 20, respectively separately and the back side panel of respective shaft bearing 1 welding 2, two be welded on the latus inframedium 5 of this two back side panels right-hand member, two front side boards that are welded on this two latus inframediums right-hand member separately 8, two blocks of side plates 9 that are welded on this two front side boards right-hand member separately separately, be welded on two back side panels, 2 tops and and the last back shroud 19 that is connected as a single entity of bearing support 1 welding, be welded on two back side panels, 2 bottoms and and bearing support 1 weld the following back shroud 14 that is connected as a single entity, be welded on two latus inframediums, 5 tops and and the middleupper cover plate 15 that welds together of last back shroud 19, be welded on two latus inframediums, 5 bottoms and and the following cover plate 12 that welds together of following back shroud 14, be welded on two front side boards, 8 tops and and the last front shroud 16 that welds together of middleupper cover plate 15, be welded on two latus inframediums, 5 bottoms and and the following front shroud 11 that welds together of following cover plate 12, be welded between the biside plate 9 and constitute with V-type plate 17 that last front shroud 16 is welded to connect.Two oil cylinder seats 4 are welded on respectively on two latus inframediums 5 and through axle sleeve 18 welding and are connected as a single entity, and on middleupper cover plate 15 and last front shroud 16, are welded with two otic placodes 6; Second gusset 10 is welded between the biside plate 9, between two latus inframediums 5, is welded with first gusset 3, the 3rd gusset 7 and the 4th gusset 13 respectively.

Claims

1. reinforced excavator swing arm; The body that comprises box structure; This body by sleeve pipe (20), respectively be welded on the bearing support (1) at these sleeve pipe two ends, separately and two back side panels (2) of respective shaft bearing (1) welding, separately be welded on two latus inframediums (5) of this two back side panels right-hand member, separately be welded on two front side boards (8) of this two latus inframediums right-hand member, separately be welded on two blocks of side plates (9) of this two front side boards right-hand member, respectively be welded on two back side panels (2) top and bottom and and last back shroud (19) and the following back shroud (14) of bearing support (1) welding, be welded on two latus inframediums (5) top and and the middleupper cover plate (15) of last back shroud (19) welding, be welded on two latus inframediums (5) bottom and and following back shroud (14) the following cover plate (12) of welding, be welded on two front side boards (8) top and and the last front shroud (16) that welds of middleupper cover plate (15), be welded on two latus inframediums (5) bottom and and the following front shroud (11) that welds of following cover plate (12), V-type plate (17) formation that is welded between the biside plate (9) and welds with last front shroud (16); Two oil cylinder seats (4) are welded on two latus inframediums (5) respectively and upward and through axle sleeve (18) welding are connected as a single entity, and on middleupper cover plate (15) and last front shroud (16), are welded with two otic placodes (6); It is characterized in that: second gusset (10) is welded between the biside plate (9), between two latus inframediums (5), is welded with first gusset (3), the 3rd gusset (7) and the 4th gusset (13) respectively.