CN217352654U

CN217352654U - Movable arm cross beam assembly and loader

Info

Publication number: CN217352654U
Application number: CN202220492630.5U
Authority: CN
Inventors: 王振; 尤华鹏
Original assignee: Shanghai Sany Heavy Machinery Co Ltd
Current assignee: Shanghai Sany Heavy Machinery Co Ltd
Priority date: 2022-03-08
Filing date: 2022-03-08
Publication date: 2022-09-02
Anticipated expiration: 2032-03-08

Abstract

The utility model relates to an engineering machine tool technical field provides a movable arm beam assembly and loader. The movable arm beam assembly comprises a supporting lug plate and a plurality of beam units, the beam units are of an integrated pipe body structure, the beam units are sequentially connected along the axial direction of the beam units to form a movable arm beam, and the supporting lug plate is welded with the movable arm beam. According to the movable arm beam assembly, the movable arm beam is designed into a multi-section structure, each beam unit can be manufactured independently by adopting a pressing process so as to ensure the quality stability of a single beam unit, and a plurality of beam units are welded into the integral movable arm beam coaxially and then are welded with the supporting lug plate, so that the integral process performance of the movable arm beam is improved, and the cost is reduced.

Description

Movable arm cross beam assembly and loader

Technical Field

The utility model relates to an engineering machine tool technical field especially relates to a movable arm beam assembly and loader.

Background

A boom cross member assembly of a loader is a structural member located between two boom plates, and generally includes a boom cross member connected between the two boom plates and a support lug welded to the cross member for pivotal connection with a swing arm. The rocker arm is driven by the oil cylinder to rotate so as to control the action of the bucket, so that the boom cross beam assembly bears larger load.

At present, various machining processes are carried out on the movable arm beam assembly, for example, the movable arm beam assembly is formed in an integrated casting mode, but the casting quality stability is poor, and the cost is high. Two U-shaped bending pieces are welded in a butt welding mode to form a movable arm cross beam, and then the supporting lug plates are welded on the movable arm cross beam to form a movable arm cross beam assembly. However, the U-shaped bending piece has poor manufacturability in bending and assembly welding and higher cost.

SUMMERY OF THE UTILITY MODEL

The utility model provides a movable arm beam assembly and loader for the manufacturability of the movable arm beam assembly who solves among the prior art is poor and the higher problem of cost.

The utility model provides a movable arm beam assembly, including supporting otic placode and a plurality of crossbeam unit, crossbeam unit formula body structure as an organic whole, it is a plurality of the crossbeam unit links to each other in proper order along its axial and forms the movable arm crossbeam, support the otic placode with the welding of movable arm crossbeam.

According to the utility model provides a pair of movable arm beam assembly, the cross section of crossbeam unit is oval.

According to the utility model provides a pair of movable arm beam assembly, every adjacent two be equipped with between the crossbeam unit support the otic placode, support the otic placode with be located its both sides the crossbeam unit welding.

According to the utility model provides a pair of movable arm beam assembly, a part of support otic placode is located movable arm crossbeam is inboard, movable arm crossbeam's inside wall and lateral wall all with support the otic placode welding.

According to the utility model provides a pair of movable arm beam assembly, the support otic placode is located the inboard part of movable arm beam with the welding of the interior week lateral wall of movable arm beam.

According to the utility model provides a pair of movable arm beam assembly, the support otic placode includes first connecting portion and second connecting portion, first connecting portion are used for connecting the rocking arm, the second connecting portion with the welding of crossbeam unit, be equipped with the second through-hole on the second connecting portion, the second through-hole is located movable arm beam is inboard.

According to the utility model provides a pair of movable arm beam assembly, movable arm beam assembly still includes the strengthening rib, the strengthening rib is connected support the otic placode with the lateral wall of crossbeam unit.

According to the utility model provides a pair of movable arm beam assembly, the strengthening rib set up in support the otic placode and deviate from one side at movable arm beam center.

According to the utility model provides a pair of movable arm beam assembly, the crossbeam unit with the outside of the one end that the support otic placode is connected is equipped with the groove.

The utility model also provides a loader, including two swing arm boards and any kind of above-mentioned movable arm beam assembly, the movable arm crossbeam is connected in two between the swing arm board.

The utility model provides a movable arm beam assembly and loader forms the movable arm crossbeam through a plurality of crossbeam unit combinations, compares in prior art whole casting movable arm beam assembly or form movable arm crossbeam through two U types butt welds, the utility model discloses can adopt each crossbeam unit of suppression technology preparation alone to guarantee single crossbeam unit's stability of quality, with a plurality of crossbeam unit coaxial weld become whole movable arm crossbeam after again with support otic placode welding, improved the whole processing property of movable arm crossbeam, the cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of an overall structure of a movable arm beam assembly provided by the present invention;

fig. 2 is an exploded view of the boom cross member provided in the present invention;

fig. 3 is a cross-sectional view of a boom beam assembly provided by the present invention;

fig. 4 is a side view of a boom beam assembly provided by the present invention;

reference numerals:

1. a boom cross member; 11. A beam unit; 111. Beveling;

2. a support ear plate; 21. A first through hole; 22. A second through hole;

201. an ear plate body; 202. A reinforcing block; 3. And (7) reinforcing ribs.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are 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.

In the description of the embodiments of the present invention, it should be noted that the terms "first" and "second" are used for clearly indicating the numbering of the product parts and do not represent any substantial difference unless explicitly stated or limited otherwise. The directions of the inner and the outer are based on the directions shown in the attached drawings. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations. Further, "a plurality" means two or more. In the specification and claims, "and/or" means at least one of connected objects, a character "/" generally means that the former and latter related objects are in an "or" relationship.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The boom cross member assembly of the present invention will be described with reference to fig. 1 to 4.

The utility model provides a movable arm beam assembly, as shown in FIG. 1 do the utility model provides a movable arm beam assembly's overall structure schematic diagram, as shown in FIG. 2 do the utility model provides a movable arm beam assembly's explosion structure schematic diagram. The boom beam assembly includes a support lug 2 and a plurality of beam units 11. The beam unit 11 is an integrated pipe structure. The plurality of beam units 11 are sequentially connected along the axial direction to form a movable arm beam 1, and the support lug plate 2 is welded with the movable arm beam 1.

Specifically, the beam unit 11 may be integrally formed using a pressing process. The cross section of the beam unit 11 may be circular, elliptical, square, or rectangular, and the cross section of the boom beam formed accordingly may also be circular, elliptical, square, or rectangular. Wherein, the cross section of the beam unit 11 is set to be elliptical, so that the boom beam has high structural strength.

The embodiment of the utility model provides a movable arm beam assembly forms movable arm crossbeam 1 through the combination of a plurality of crossbeam units 11, forms the movable arm beam structure of multistage formula, compares in prior art whole casting movable arm beam assembly or form movable arm crossbeam through two U types butt welds, the utility model discloses can adopt suppression technology to make each crossbeam unit 11 alone to guarantee single crossbeam unit 11's stability of quality, with a plurality of crossbeam units 11 coaxial welding become whole movable arm crossbeam after again with support otic placode 2 welding, improved movable arm crossbeam's whole processing property, the cost is reduced.

As shown in fig. 2, the supporting ear plate 2 includes a first connecting portion and a second connecting portion. The first connecting portion is used for connecting the rocker arm, and the second connecting portion is welded to the beam unit 11. The first connecting portion is provided with a first through hole 21, and the first connecting portion is used for being connected with the rocker arm through a pin shaft penetrating through the first through hole 21 in a rotating manner.

In some of the embodiments, the second connection portion is welded to an outer side wall of the boom beam 1, for example, the second connection portion is welded to any beam unit 11. For another example, the second connecting portion is welded to a position where the two beam units 11 are connected. The second connection portion may partially surround the boom cross member 1 or completely surround the boom cross member 1.

In other embodiments, a support ear plate 2 is disposed between each two adjacent beam units 11. The support lug plate 2 is welded to the beam unit 11 on both sides thereof. I.e. the ends of two adjacent beam units 11 are connected by means of the support lugs 2.

Alternatively, the support lug plate 2 and the beam unit 11 located on both sides thereof are welded along the circumferential periphery of the beam unit 11, that is, the weld between the support lug plate 2 and the beam unit 11 surrounds the beam unit 11 by one circle, so that the connection strength between the support lug plate 2 and the boom beam 1 can be enhanced.

Furthermore, a part of the supporting ear plate 2 is located inside the movable arm beam 1, and the inner side wall and the outer side wall of the movable arm beam 1 are both welded with the supporting ear plate 2.

Specifically, a part of the second connecting portion of the support lug plate 2 is located inside the boom beam 1. That is, the second connecting portion extends into the interior of the boom cross member 1. Because the length of the single beam unit 11 is short, the welding of the inner side of the beam unit 11 and the supporting ear plate 2 can be facilitated.

As shown in fig. 3, the utility model provides a cross-sectional view of movable arm beam assembly, movable arm beam 1's inside wall and lateral wall all with support otic placode 2 welding. Specifically, the part of the supporting lug plate 2 located outside the boom beam 1 is welded to the outer side wall of the beam unit 11, and the part of the supporting lug plate 2 located inside the boom beam 1 is welded to the inner side wall of the beam unit 11. Alternatively, the side of the support lug plate 2 facing away from the center of the boom beam 1 is welded to the inner side wall of the beam unit 11.

The part of the support ear plate 2 located inside the movable arm beam 1 in the embodiment serves as an internal reinforcing rib of the movable arm beam 1, so that the connection reliability of the movable arm beam 1 and the support ear plate 2 and the structural strength of the movable arm beam assembly are improved to a greater extent.

Further, a portion of the support lug 2 located inside the boom cross member 1 is welded to an inner peripheral side wall of the boom cross member 1. Namely, the inner side of the movable arm beam 1 is welded with the supporting ear plate 2 in an annular shape.

In some of the embodiments, the support ear plate 2 is provided with a second through hole 22, and the second through hole 22 is located inside the boom beam 1. Specifically, the second through hole 22 is provided at the second connection portion. Therefore, the overall weight of the movable arm beam assembly can be reduced on the premise of enhancing the structural strength of the movable arm beam 1. The shape of the second through hole 22 is adapted to the cross-sectional shape of the boom beam 1. Wherein, in order to ensure that the inner side part of the supporting ear plate 2 can be connected with the inner peripheral side wall of the movable arm beam 1, the size of the second through hole 22 is smaller than the cross section size of the inner peripheral side wall of the movable arm beam 1.

Optionally, the outer side of one end of the beam unit 11 connected with the supporting ear plate 2 is provided with a groove 111. When the supporting lug plate 2 is welded with the outer side wall of the movable arm beam 1, a welding rod or a welding wire can be extended into the groove 111 to ensure complete welding and obtain good fusion. And also, for example, the strength of the connection of the support lug plate 2 to the cross-member unit 11 and the structural strength of the entire boom cross-member assembly are improved.

Further, the end, close to the outer side, of the two beam units 11 at the two ends of the boom beam 1 is also provided with a groove 111, so that the boom beam assembly and the boom plate can be welded conveniently.

The embodiment of the utility model provides a movable arm beam assembly still includes strengthening

rib

3, and 3 connection support otic placodes 2 of strengthening rib and movable arm beam 1's lateral wall. Specifically, the reinforcing rib 3 is provided with two vertical straight sides, one of the straight sides is welded with the support lug plate 2, and the other straight side is welded with the movable arm cross beam 1 to form a triangular support reinforcing structure. Fig. 4 is a side view of the boom cross member according to the present invention.

Alternatively, as shown in fig. 1 and 2, the reinforcing bead 3 is provided with an arc-shaped edge connecting the two straight edges. And a chamfer is arranged between the two straight edges, so that the reinforcing ribs 3 can be favorably welded with the supporting lug plate 2 and the movable arm beam 1.

Further, as shown in fig. 1 and 2, a reinforcing rib 3 is provided on a side of the support lug plate 2 away from the center of the boom cross member 1.

In the embodiment that the supporting ear plates 2 are arranged between every two adjacent cross beam units 11, and the supporting ear plates 2 are welded with the cross beam units 11 positioned at two sides of the supporting ear plates, the number of the reinforcing ribs 3 is one less than that of the cross beam units 11. One side of each supporting lug plate 2, which is far away from the center of the movable arm beam 1, is welded with the beam unit 11.

As a specific example, as shown in fig. 1 to 3, the number of the beam units 11 is three, and the number of the support lugs 2 is two. Of course, one or more supporting ear plates 2 may be further clamped outside the boom cross member 1 according to actual needs.

Further, as shown in fig. 2 and 4, the support lug plate 2 includes a lug plate body 201 and a reinforcing block 202, and the first through hole 21 penetrates the lug plate body 201 and the reinforcing block 202. The reinforcing block 202 can enhance the structural strength of the first connecting portion of the supporting lug plate 2, thereby improving the reliability of the connection of the supporting lug plate 2 with the rocker arm.

The utility model provides a movable arm beam assembly adopts a plurality of crossbeam units 11 to connect movable arm crossbeam 1 that forms multistage formula structure, and each crossbeam unit 11's length is shorter, and suppression manufacturability is simple, and the cost is lower. And one part of the supporting lug plate 2 extends into the movable arm beam 1, so that the effect of a reinforcing rib can be achieved, and the structural strength of the whole beam is higher. The support ear plate 2 and the movable arm beam 1 form a T-shaped structure, a groove is formed in the end portion of the beam unit 11, and the structural strength is better after welding.

The embodiment of the utility model provides a still provide a loader, this loader include two swing arm boards and above-mentioned arbitrary embodiment swing arm beam assembly, swing arm crossbeam 1 is connected between two swing arm boards. Specifically, two ends of the boom beam 1 are welded and fixed to the two boom plates in a one-to-one correspondence manner.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The movable arm beam assembly is characterized by comprising a supporting lug plate and a plurality of beam units, wherein the beam units are of an integrated pipe body structure and are sequentially connected along the axial direction of the beam units to form a movable arm beam, and the supporting lug plate is welded with the movable arm beam.

2. The boom beam assembly according to claim 1, wherein a cross section of the beam unit is an ellipse.

3. The movable arm beam assembly according to claim 1, wherein the support lug plate is provided between each adjacent two of the beam units, and the support lug plate is welded to the beam units on both sides thereof.

4. The boom beam assembly of claim 3, wherein a portion of the support ear plate is located inside the boom beam, and wherein both the inside and outside walls of the boom beam are welded to the support ear plate.

5. The boom beam assembly according to claim 4, wherein a portion of the support lug inside the boom beam is welded to an inner peripheral side wall of the boom beam.

6. The movable arm beam assembly according to claim 1, wherein the support lug plate includes a first connection portion and a second connection portion, the first connection portion is used for connecting a rocker arm, the second connection portion is welded to the beam unit, a second through hole is formed in the second connection portion, and the second through hole is located on the inner side of the movable arm beam.

7. The boom beam assembly of claim 1, further comprising a stiffener connecting the support ear plate and the boom beam outer side wall.

8. The boom beam assembly of claim 7, wherein the stiffener is disposed on a side of the support ear plate facing away from a center of the boom beam.

9. The movable arm beam assembly according to claim 3, wherein an outer side of an end of the beam unit connected to the support lug is provided with a groove.

10. A loader comprising two swing arm plates and a swing arm beam assembly according to any one of claims 1 to 9, said swing arm beam being connected between said two swing arm plates.