CN210975941U

CN210975941U - Rear hood of excavator and excavator

Info

Publication number: CN210975941U
Application number: CN201921904459.9U
Authority: CN
Inventors: 胡先锋; 林友灿; 王苏号
Original assignee: Sany Heavy Machinery Ltd
Current assignee: Sany Heavy Machinery Ltd
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2020-07-10
Anticipated expiration: 2029-11-06

Abstract

The utility model provides an aircraft bonnet and excavator behind excavator belongs to excavator technical field, and the aircraft bonnet is including the cover body, cushion and strengthening rib behind the excavator, and the cushion is one at least, and the cushion is established between the strengthening rib and the cover body, and the strengthening rib sets up along the periphery of the cover body to support with the cover body and hold. Through set up the cushion between the strengthening rib and the cover body, make the cushion and the cover body fixed, strengthening rib and cushion are fixed, make thin cover body welding deformation when avoiding current strengthening rib and cover body welding, make behind the excavator aircraft bonnet stable in structure, non-deformable.

Description

Rear hood of excavator and excavator

Technical Field

The utility model relates to an excavator technical field particularly, relates to an aircraft bonnet and excavator behind excavator.

Background

The back aircraft bonnet of excavator is the sheet metal component structure, for the stable in structure non-deformable who makes the back aircraft bonnet, generally sets up the strengthening rib on the inner wall of back aircraft bonnet.

The existing rear hood is generally welded by gas shield welding and then welded with reinforcing ribs, but because the rear hood is generally thin, the rear hood after the gas shield welding has welding deformation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an aircraft bonnet and excavator behind excavator, aircraft bonnet stable in structure behind the excavator, non-deformable.

The embodiment of the utility model is realized like this:

an aspect of the embodiment of the utility model provides an excavator rear cover, it is including the cover body, cushion and strengthening rib, the cushion is one at least, the cushion is established the strengthening rib with between the cover body, the strengthening rib is followed the periphery of the cover body sets up, and with the cover body supports and holds.

Optionally, the cover body comprises a first cover body and a second cover body which are connected, the cushion block is arranged on the first cover body, and the reinforcing rib is connected with the cushion block and extends to the second cover body; the cushion block is connected with the reinforcing rib through a first welding layer, the cushion block is connected with the first cover body through a second welding layer, and the contact area of the cushion block and the first cover body is larger than that of the reinforcing rib and the cushion block.

Optionally, the reinforcing rib is provided with a clamping groove for buckling the cushion block.

Optionally, the first weld layer is a gas shield weld layer.

Optionally, a plurality of first welding layers are arranged between the cushion block and the reinforcing rib, the length of each first welding layer is 18-22 mm, and the height of each first welding layer is 2-4 mm.

Optionally, the distance between two adjacent first welding layers is between 80mm and 100 mm.

Optionally, the second solder layer is a spot solder layer.

Optionally, a plurality of second welding layers are arranged between the cushion block and the cover body, each second welding layer is hemispherical, and the diameter of each hemisphere is 10 mm-14 mm.

Optionally, the distance between two adjacent second welding layers is between 60mm and 80 mm.

Another aspect of the embodiments of the present invention provides an excavator, which includes the excavator rear hood as described above.

The utility model discloses beneficial effect includes:

the embodiment of the utility model provides an aircraft bonnet and excavator behind excavator, through set up the cushion between the strengthening rib and the cover body, make cushion and the cover body fixed, strengthening rib and cushion are fixed, make the condition of thin cover body welding deformation when avoiding current strengthening rib and cover body welding, add the cushion of establishing in this embodiment and play the effect of the transitional coupling strengthening rib and the cover body, the strengthening rib sets up on cover body inner wall along cover body periphery shape, and support with the cover body and hold, strengthen cover body appearance structure, make aircraft bonnet stable in structure behind the excavator of this embodiment, non-deformable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is one of schematic structural diagrams of a rear hood of an excavator according to an embodiment of the present invention;

fig. 2 is a second schematic structural view of a rear hood of an excavator according to an embodiment of the present invention;

fig. 3 is a third schematic view of a rear hood structure of an excavator according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 5 is an enlarged view of fig. 4 at B.

Icon: 10-a cover body; 11-a first cover; 12-a second cover; 20-cushion block; 30-reinforcing ribs; 31-a card slot; 41-a first solder layer; 42-second solder layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.

Referring to fig. 1, the shield body 10, at least one cushion block 20, and at least one reinforcing rib 30 are provided, the cushion block 20 is provided between the reinforcing rib 30 and the shield body 10, and the reinforcing rib 30 is provided along the periphery of the shield body 10 and abuts against the shield body 10.

First, as shown in fig. 3, the cover body 10 is a thin sheet metal part structure, and the reinforcing ribs 30 are provided on the inner wall of the cover body 10 along the outer peripheral shape of the cover body 10, and serve to reinforce the outer shape structure of the cover body 10, so that the cover body 10 is not easily deformed.

The cover body 10 comprises a first cover body 11 and a second cover body 12 which are connected with each other, the first cover body 11 is of a plane structure, the second cover body 12 is of a curved surface structure, and the cover body 10 formed by the first cover body 11 and the second cover body 12 is of a bent thin sheet metal part structure.

As shown in fig. 4, the block 20 is disposed on the first cover 11, the reinforcing rib 30 is connected to the block 20 and extends to the second cover 12, and the reinforcing rib 30 spans the first cover 11 and the second cover 12, that is, the same reinforcing rib 30 is disposed extending from the first cover 11 to the second cover 12.

In this embodiment, the first cover 11 and the part of the reinforcing rib 30 on the first cover 11 are connected by the spacer 20. The part of the reinforcing rib 30 on the second cover 12 is fixed on the second cover 12 by another fixing method, which is not part of the present embodiment and will not be discussed here.

Secondly, the cushion blocks 20 are arranged between the reinforcing ribs 30 and the first cover 11, the reinforcing ribs 30 and the first cover 11 are fixed by the cushion blocks 20, the number of the cushion blocks 20 is at least one, for example, as shown in fig. 1, the number of the reinforcing ribs 30 is two in the embodiment, and each reinforcing rib 30 is fixed by three cushion blocks 20 and the first cover 11.

As shown in fig. 2, the first cover 11 has a planar structure, the bottom surface of the pad 20 is in surface contact with the inner wall plane of the first cover 11, that is, the pad 20 and the first cover 11 are flat, and the pad 20 and the cover 10 are connected by the second welding layer 42.

Specifically, the second welding layer 42 is a spot welding layer, and the contact position between the edge of the spacer 20 and the first cover 11 is fixed by spot welding.

Spot welding is a welding method in which a welding spot is formed between the contact surfaces of two overlapped workpieces by using a columnar electrode during welding. During spot welding, the workpiece is pressed to be in close contact with the workpiece, then current is switched on, the contact position of the workpiece is melted under the action of resistance heat, and a welding spot is formed after cooling. The spot welding is mainly used for welding sheet component stamping parts with the thickness of less than 4mm, and is particularly suitable for welding automobile bodies, carriages and airplane fuselages.

The spot welding is mainly used for welding a thin plate structure, a reinforcing steel bar and the like, and therefore, the spot welding is suitable for welding the first cover body 11 and the cushion block 20 in the excavator rear hood of the thin sheet metal part structure according to the embodiment.

Specifically, the number of the second welding layers 42 is plural, and the distance between two adjacent second welding layers 42 is between 60mm and 80 mm. Each second welding layer 42, i.e. welding spot, has a hemispherical shape with a diameter of between 10mm and 14 mm.

The diameter of the hemispherical welding spots is between 10mm and 14mm, so that the cushion block 20 and the first cover body 11 can be welded stably, when the cushion block 20 and the first cover body 11 are subjected to spot welding, a circle of welding spots are formed along the periphery of the cushion block 20, and the distance between every two adjacent welding spots is between 60mm and 80mm, so that the welding spots between the cushion block 20 and the first cover body 11 can ensure firm welding, and the welding spots cannot be too dense to cause welding deformation of the first cover body 11.

Illustratively, as shown in fig. 1, the reinforcing ribs 30 are elongated bar-shaped structures, the cushion block 20 is rectangular, the contact area between the cushion block 20 and the first cover 11 is larger than the contact area between the reinforcing ribs 30 and the cushion block 20, that is, the cushion block 20 extends out of the reinforcing ribs 30, which greatly increases the contact area between the cushion block 20 and the first cover 11, and when the cushion block 20 is spot-welded with the first cover 11, the contact area is large, and the connection can be stable.

In order to ensure that the pad 20 and the first cover 11 are firmly spot-welded, at the same position of the pad 20, the contact area between the pad 20 and the first cover 11 can be about 5 times or more of the contact area between the reinforcing rib 30 and the pad 20, so that, compared with the prior art in which the reinforcing rib is directly in contact welding with the cover (i.e. the rear cover in the prior art), the pad 20 and the first cover 11 are spot-welded in the embodiment, which can ensure that the number of spot-welded welding points is large and the welding is firm, and meanwhile, the pad 20 with a large area shares welding stress, so that the thin cover 10 is not deformed due to welding.

Thirdly, the cushion block 20 and the first cover 11 are connected by a second welding layer 42, the cushion block 20 and the reinforcing rib 30 are connected by a first welding layer 41, and the reinforcing rib 30 abuts against the first cover 11, that is, the portion of the reinforcing rib 30 on the first cover 11 where the cushion block 20 is not arranged contacts and abuts against the first cover 11, so as to stabilize the first cover 11.

Furthermore, the reinforcing ribs 30 are provided with clamping grooves 31, the clamping grooves 31 are matched with the cushion blocks 20, the reinforcing ribs 30 are buckled on the cushion blocks 20 through the clamping grooves 31, and the cushion blocks 20 and the reinforcing ribs 30 are fixed through the first welding layers 41.

Specifically, the first welding layer 41 is a gas shield welding layer, and gas shield welding refers to a welding method using carbon dioxide or argon shield, and a welding wire for a welding rod is not used. CO 2₂The welding efficiency is high, and the argon arc welding is mainly used for welding materials such as aluminum, titanium, stainless steel and the like.

As shown in fig. 5, the first welding layers 41 are formed during the gas-shielded welding between the cushion block 20 and the reinforcing rib 30 to fix the cushion block 20 and the reinforcing rib 30, the number of the first welding layers 41 is multiple, and the distance between two adjacent first welding layers 41 is 80 mm-100 mm, so that the first welding layers 41 are distributed uniformly, and the cushion block 20 and the reinforcing rib 30 can be connected well.

The length of each first welding layer 41 is between 18mm and 22mm, and the height of each first welding layer 41 is between 2mm and 4 mm.

As shown in fig. 5, when the length of the first welding layer 41 in the Y direction and the height of the first welding layer 41 in the Z direction are within the above ranges, the gas-shielded welding between the reinforcing beads 30 and the spacer 20 is effective, and the reinforcing beads 30 and the spacer 20 can be firmly connected.

The embodiment of the utility model provides a rear hood of excavator, through set up cushion 20 between the strengthening rib 30 and the cover body 10, make cushion 20 and the cover body 10 fixed, strengthening rib 30 and cushion 20 are fixed, make thin cover body welding deformation when avoiding strengthening rib and cover body welding among the prior art, the cushion 20 that adds to establish in this embodiment plays the transitional coupling strengthening rib 30 and the cover body 10, the effect of the firm cover body 10 structure, strengthening rib 30 sets up on the cover body 10 inner wall along cover body 10 peripheral shape, and support with the cover body 10 and hold, strengthen the cover body 10 appearance structure, make the rear hood stable in structure of excavator of this embodiment, non-deformable.

On the other hand, spot welding is fixed through the cushion block 20 and the first cover body 11, the contact area of the cushion block 20 and the first cover body 11 is far larger than the area of the existing reinforcing rib 30 directly contacting with the first cover body 11, so that the cushion block 20 and the first cover body 11 can be firmly connected through spot welding, welding deformation of the thin cover body 10 is avoided, the reinforcing rib 30 is fixedly connected with the cushion block 20 through gas shielded welding, the position of the cushion block 20 is not arranged on the first cover body 11, the reinforcing rib 30 is contacted and supported with the first cover body 11, the structure of the first cover body 11 is stabilized along the appearance of the first cover body 11 by the reinforcing rib 30, and the thin cover body 10 is not deformed and bent.

In addition, among the prior art, for making strengthening rib and the welding of the cover body firm, need cover inner wall putty to before the welding, make cover inner wall smooth the back go on again with the welding of strengthening rib, because of the strengthening rib extends on whole cover body, so, cover the position that the strengthening rib set up on the body all need carry out the putty operation of scraping for complex operation, time are with high costs. According to the embodiment, the cushion block 20 is in transitional connection with the reinforcing rib 30 and the first cover body 11, the cushion block 20 and the first cover body 11 are in contact spot welding, putty scraping work is not needed, production cost is low, and efficiency is high.

The embodiment of the utility model provides a still disclose an excavator, aircraft bonnet behind the excavator including above arbitrary one.

The excavator comprises the same structure and beneficial effects as the excavator rear hood in the previous embodiment. The structure and the beneficial effects of the rear hood of the excavator are described in detail in the embodiment, and are not described in detail herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An excavator rear hood, comprising: the cover comprises a cover body, at least one cushion block and at least one reinforcing rib, wherein the cushion block is arranged between the reinforcing rib and the cover body, and the reinforcing rib is arranged along the periphery of the cover body and is abutted against the cover body.

2. The excavator rear hood of claim 1 wherein the hood body comprises a first hood body and a second hood body which are connected, the cushion block is arranged on the first hood body, and the reinforcing rib is connected with the cushion block and extends to the second hood body;

the cushion block is connected with the reinforcing rib through a first welding layer, the cushion block is connected with the first cover body through a second welding layer, and the contact area of the cushion block and the first cover body is larger than that of the reinforcing rib and the cushion block.

3. The excavator rear hood of claim 1 or 2, wherein the reinforcing ribs are provided with clamping grooves for fastening the cushion blocks.

4. The excavator rear hood of claim 2 wherein the first weld layer is a gas barrier weld layer.

5. The excavator rear hood of claim 4, wherein a plurality of the first welding layers are arranged between the cushion block and the reinforcing ribs, each first welding layer has a length of 18mm to 22mm, and each first welding layer has a height of 2mm to 4 mm.

6. The excavator rear hood of claim 5, wherein the spacing between two adjacent first weld layers is between 80mm and 100 mm.

7. The excavator rear hood of claim 2 wherein the second weld layer is a spot weld layer.

8. The excavator rear hood of claim 7, wherein a plurality of second welding layers are arranged between the cushion block and the hood body, each second welding layer is hemispherical, and the diameter of each hemisphere is 10-14 mm.

9. The excavator rear hood of claim 8, wherein the spacing between two adjacent second weld layers is between 60mm and 80 mm.

10. An excavator comprising an excavator rear cover as claimed in any one of claims 1 to 9.