CN202390866U

CN202390866U - Excavator bucket rod and excavator

Info

Publication number: CN202390866U
Application number: CN2011205380687U
Authority: CN
Inventors: 席春玲; 李磊磊; 刘瑞毅; 高建丽; 董锋军
Original assignee: Zoomlion Heavy Industry Science and Technology Co Ltd
Current assignee: Zoomlion Heavy Industry Science and Technology Co Ltd
Priority date: 2011-12-20
Filing date: 2011-12-20
Publication date: 2012-08-22
Anticipated expiration: 2021-12-20

Abstract

The utility model provides an excavator dipper, include lower apron and install an at least rib on lower apron, an at least rib directly set up in on the apron down, and along the length direction of apron arranges down, an at least rib include by the apron middle part down to the tip that the lateral part of apron is buckled and is extended down. The utility model also provides an excavator.

Description

Excavator boom and excavator

Technical field

The utility model relates to a kind of engineering machinery, particularly a kind of excavator.

Background technology

Excavator structure partly comprises equipment, slewing equipment, running gear.Equipment is used for directly accomplishing mining task, comprises swing arm, dipper, scraper bowl.Excavator when carrying out cubic meter of stone operation, scraper bowl after receiving bucket, the cubic meter of stone easily and the dipper lower cover collide, and influence the outward appearance and the application life of dipper.

Fig. 2 shows a kind of excavator boom in the correlation technique; It comprises lower cover 11a and is installed on lower cover 11a goes up protection structure 7a; This protection structure 7a comprises the guard shield 71a that is welded on the lower cover 11a and is welded in the some rib 72a on the guard shield 71a; This protection structure 7a can play the purpose of protection lower cover 11a to a certain extent, but it still comes with some shortcomings, and for example: the quantity of (1) rib is too much; Increase dipper weight, influenced whole operating efficiency of excavator and complete machine stability; (2) weld seam is too much, when increasing the Welder; (3) cause easily that at circle B place weld defect and stress are concentrated, cause dipper from this commissure fracture.

The utility model content

The excavator that the utility model aims to provide a kind of improved excavator boom and has this dipper.

The utility model provides a kind of excavator boom; Comprise lower cover and be installed at least one rib on the lower cover; Said at least one rib directly is arranged on the said lower cover; And arrange that along the length direction of said lower cover said at least one rib comprises by said lower cover middle part to end that said lower cover sidepiece bending is extended.

Preferably, the two ends of said at least one rib by said lower cover middle part to said lower cover lateral curvature.

Preferably, said dipper also comprises the side plate that combines with lower cover; The end of the end of said at least one rib extends to said lower cover and corresponding side plate junction.

Preferably, said at least one rib is arranged in the first half of said lower cover.

Preferably, said at least one rib comprises straight pars intermedia, and this pars intermedia links to each other both ends, the junction arc transition of said both ends and said pars intermedia.

Preferably, said end is flat, and and said pars intermedia between angle be the obtuse angle.

Preferably, the angle between said pars intermedia and the said end is spent between 175 degree 165.

Preferably, said at least one rib comprises two ribs, and these two ribs are arranged side by side on said lower cover.

Preferably, the end of said two ribs is crooked in the opposite direction.

The utility model also provides a kind of excavator, comprises above-mentioned dipper in each.

Compare with correlation technique, the utility model possesses following beneficial effect:

(1) constant and can prevent that the cubic meter of stone from directly bumping under the situation on the lower cover of dipper, alleviated the weight of dipper, and then the operating efficiency of complete machine and stability are improved in dipper intensity;

(2) reduced weld seam, when reducing the Welder, and, can stress be distributed to the both sides of dipper lower cover, avoided or significantly alleviated stress concentrating the harm that lower cover is caused because the bending form is adopted in the end of rib.

Description of drawings

Fig. 1 is the structural representation of the excavator boom among some embodiment of the utility model.

Fig. 2 is the structural representation of the excavator boom in the correlation technique.

The specific embodiment

Below in conjunction with specific embodiment and Figure of description the utility model is explained further details.

Fig. 1 shows the excavator boom among some embodiment of the utility model; It comprises dipper body 1, first preceding bearing 2, the second preceding bearing 3, rear support 4, bucket arm cylinder supporting base 5, shovel hair oil cylinder supporting base 6 and protection structure 7; Bearing 2 is arranged at dipper body 1 foremost before first, is used for scraper bowl (not shown) hinged.Before second bearing 3 be arranged at dipper body 1 anterior with first before bearing 2 distance of being separated by, be used for rocking bar (not shown) hinged.Rear support 4 is arranged at dipper body 1 rear portion, is used for swing arm (not shown) hinged.Supporting base 8 is installed on the rear end face of dipper body 1, and supporting base 9 is installed on dipper body 1 rear upper end face.Protection structure 7 is installed on the below of dipper body 1, is used at the backhoe hydraulic crawler excavator when carrying out such as cubic meter of stone operation, and scraper bowl prevents that the cubic meter of stone and dipper body 1 from directly colliding after receiving bucket.

In certain embodiments, dipper body 1 can be the casing shape, and it comprises lower cover 11, upper cover plate 12, biside plate 13 and back plate 14.Upper cover plate 12 is relative with lower cover 11, and biside plate 13 parallel interval are arranged between lower cover 11 and the upper cover plate 12, and back plate 14 is arranged at lower cover 11, upper cover plate 12 and biside plate 13 rear ends, forms the case construction of a sealing.

In certain embodiments, protection structure 7 can comprise two ribs 70, and these two ribs 70 directly combine (for example, welding) on lower cover 11 first halfs, and arranges along the length direction of lower cover 11 is parallel.Each rib 70 includes by the middle part of lower cover 11 to the

end

72 and 73 that the bending of lower cover 11 sidepieces is extended, and the stress that produces when being used for lower cover 11 with the foreign object collision is by the both sides of the middle part guiding lower cover 11 of lower cover 11, with protection lower cover 11.

In certain embodiments; Extend towards reverse the end 72 of above-mentioned two

ribs

70 and 73, and terminal corresponding side plate 13 and lower cover 11 junctions of extending to, with stress guide to side plate 13; Thereby, play the purpose of protecting lower cover 11 preferably so that stress is disperseed.Be appreciated that ground, the quantity of rib is not limited to two in the protection structure 7.

As shown in Figure 1 again; Two straight ended 72,73 that each root rib 70 all can comprise straight pars intermedia 71 in certain embodiments and lay respectively at pars intermedia 71 two ends; All have an angle between

end

72,73 and the pars intermedia 71, and both are symmetrical with respect to pars intermedia 71 perpendicular bisectors.Preferably, the angle between

end

72,73 and the pars intermedia 71 is the obtuse angle, and this obtuse angle value be 165 spend to 175 the degree between.In addition, between

end

72,73 and the pars intermedia 71 also arc transition be connected.

Be appreciated that ground, above-mentioned dipper is compared with the dipper in the correlation technique shown in Figure 2 possesses following advantage at least:

(1) constant and can prevent that the cubic meter of stone from directly bumping under the situation on the lower cover 11 of dipper, alleviated the weight of dipper, and then the operating efficiency of complete machine and stability are improved in dipper intensity;

(2) reduced weld seam, when reducing the Welder, and, can stress be distributed to the both sides of dipper lower cover 11, avoided or significantly alleviated stress concentrating the harm that lower cover 11 is caused because the bending form is adopted at the two ends of rib 70.

The above only is the preferred implementation of the utility model, and the protection domain of the utility model also not only is confined to the foregoing description, and all technical schemes that belongs under the utility model thinking all belong to the protection domain of the utility model.Should be pointed out that for those skilled in the art in the some improvement and the retouching that do not break away under the utility model principle prerequisite, these improvement and retouching also should be regarded as the protection domain of the utility model.

Claims

1. excavator boom; Comprise lower cover and be installed at least one rib on the lower cover; It is characterized in that; Said at least one rib directly is arranged on the said lower cover, and arranges along the length direction of said lower cover, and said at least one rib comprises by the end of said lower cover middle part to said lower cover sidepiece bending extension.

2. dipper according to claim 1 is characterized in that, the two ends of said at least one rib by said lower cover middle part to said lower cover lateral curvature.

3. dipper according to claim 2 is characterized in that said dipper also comprises the side plate that combines with lower cover; The end of the end of said at least one rib extends to said lower cover and corresponding side plate junction.

4. dipper according to claim 1 is characterized in that said at least one rib is arranged in the first half of said lower cover.

5. dipper according to claim 1 is characterized in that, said at least one rib comprises straight pars intermedia, and this pars intermedia links to each other both ends, the junction arc transition of said both ends and said pars intermedia.

6. dipper according to claim 5 is characterized in that said end is flat, and and said pars intermedia between angle be the obtuse angle.

7. dipper according to claim 6 is characterized in that, the angle between said pars intermedia and the said end is spent between 175 degree 165.

8. according to each described dipper of claim 1-7, it is characterized in that said at least one rib comprises two ribs, these two ribs are arranged side by side on said lower cover.

9. dipper according to claim 8 is characterized in that, the end of said two ribs is crooked in the opposite direction.

10. an excavator is characterized in that, comprises each described dipper of claim 1 to 9.