CN202925585U

CN202925585U - Crossbeam apparatus used in machine and machine provided with the crossbeam apparatus

Info

Publication number: CN202925585U
Application number: CN 201220695381
Authority: CN
Inventors: 叶森; 姜立庆; 魏磊磊; 刘永峰
Original assignee: Shandong SEM Machinery Co Ltd
Current assignee: Caterpillar Qingzhou Ltd
Priority date: 2012-12-05
Filing date: 2012-12-05
Publication date: 2013-05-08
Anticipated expiration: 2022-12-05

Abstract

The utility model relates to a crossbeam apparatus used in machines and a machine provided with the crossbeam apparatus. The crossbeam apparatus comprises two movable arms which are arranged parallel with each other and pivotedly connected with the machine, and a tubular cross beam and an ear plate which are fixedly connected between the two movable arms, wherein the ear plate is fixedly connected with the cross beam and used for supporting a rocking arm pivotedly connected with the ear plate, the tubular cross beam is formed by multiple segments of tubes, the ear plate is disposed between the multiple segments of tubes, and the tube are fixedly connected with the ear plate and outer walls of the movable arms so as to from the cross beam.

Description

Cross-member arrangement for a machine and machine having such a cross-member arrangement

Technical Field

The present invention relates to a beam device for a machine, in particular for a mobile arm of a loader. Furthermore, the utility model discloses still further relate to a machine that has this kind of beam device.

Background

Machines, such as heavy equipment machines of the type such as loaders, may be used to perform a variety of tasks in industries such as mining, construction, farming, and the like. The loader is used as an engineering machine with high operation efficiency, is mainly used for shoveling, loading, transporting, digging, pushing and other operations on loose piled materials, and can also be used for tidying and scraping fields and the like. After the loader is replaced with the corresponding working device, the loader can also carry out the operations of digging, hoisting, loading and unloading and the like. Therefore, the loader is widely used in projects such as urban construction, railways, highways, hydroelectric power, oil fields, and airport construction.

Typically, loaders effect loading and unloading of material through a work tool, such as a bucket. The bucket is supported by a movable arm which is pivotally connected with the machine body, the movable arm is controlled by an oil cylinder to lift, a cross beam is arranged between the movable arms which are parallel to each other, an ear plate is fixedly connected with the cross beam, the ear plate supports a rocker arm which is pivotally connected with the ear plate, a connecting rod is pivotally connected with the rocker arm and the bucket at the same time, and the oil cylinder which is pivotally connected with the rocker arm on the machine controls the overturning of the bucket. In the prior art, the cross beam of the machine is usually formed by a plurality of metal plates which are fastened together and welded into a tubular shape, and the lug plates are welded to the outer wall of the tubular cross beam or partially extend into the opening of the tubular cross beam. And the structure of the lug plate is very complicated according to the structure of the conventional cross member apparatus. The cross beam and the lug plate which have supporting effect on the bucket are required to have high strength and stable structure by the high-strength and high-frequency working requirements of the loader, but the welded tubular cross beam can have the problem of weld joint cracking after being subjected to high-frequency and high-strength impact, and the lug plate has the problem of weld joint cracking due to stress concentration caused by relative concentration of welding points in the working process. Meanwhile, in the prior art, the tubular cross beam is formed by welding a plurality of metal plates, and the problems of complex structure, low production efficiency and high production cost exist.

The present disclosure is directed to solving one or more of the problems set forth above.

SUMMERY OF THE UTILITY MODEL

Therefore, an object of the utility model is to provide a modified beam device, this kind of beam device can optimize the crossbeam structure under the prerequisite that satisfies the intensity requirement, reduces weldment work, reduction of erection time.

In particular, the present invention proposes a beam device for a machine, comprising two movable arms arranged parallel to each other and pivotally connected to the machine; the tubular cross beam is fixedly connected between the two movable arms; the lug plate is fixedly connected with the cross beam and is used for supporting a rocker arm which is pivotally connected with the lug plate; the tubular beam is formed by a plurality of sections of pipe fittings, the lug plates are arranged among the plurality of sections of pipe fittings, and the pipe fittings are fixedly connected with the lug plates and the side walls of the movable arms to form the beam.

According to an advantageous embodiment, the lug forms an opening in the part located in the mouth of the tube.

According to an advantageous embodiment, the tube is a seamless steel tube.

According to a particularly advantageous embodiment, the cross member comprises a first and a second tube, which are welded to the two movable arms, respectively, at ends remote from each other and to the two lugs arranged between the first and second tube, respectively, at ends facing each other.

Another aspect of the present disclosure relates to a machine, including: a working device; two booms arranged parallel to each other and pivotally connected to the machine; the tubular cross beam is fixedly connected between the two movable arms; the lug plate is fixedly connected with the cross beam and is used for supporting a rocker arm which is pivotally connected with the lug plate; the tubular beam is formed by a plurality of sections of pipe fittings, the lug plates are arranged among the plurality of sections of pipe fittings, and the pipe fittings are fixedly connected with the lug plates and the side walls of the movable arms to form the beam.

According to an advantageous embodiment, in the machine, the lug forms an opening in the part located in the mouth of the tube.

According to another advantageous embodiment, the tube is a seamless steel tube.

According to a particularly advantageous embodiment, in the machine, the cross-beam comprises a first and a second tube, which are welded respectively to the two movable arms on the ends remote from each other and on the ends facing each other to both sides of the lug arranged between the first and second tube.

Drawings

The cross-beam device according to the invention is described in detail below with the aid of the drawings. Wherein,

figure 1 shows an exemplary machine of the invention in a perspective view,

figure 2 shows an exemplary cross-beam arrangement of the invention in an assembled state in a perspective view,

fig. 3 shows the cross-member arrangement of fig. 2 in an exploded perspective view.

Detailed Description

Embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. In which the same reference numerals are used throughout the drawings to designate the same or similar components.

Fig. 1 shows a schematic view of a side of a machine 100 according to the invention. The machine 100 is shown here as a loader 100 by way of example. It is contemplated that the machine may be any type of machine that performs operations associated with a particular industry (e.g., mining, construction, farming, forestry, etc.) and operates in a particular work environment (e.g., construction site, mine site, forest farm, etc.).

The machine 100 is shown schematically in fig. 1, where arrow D indicates the forward direction of the machine. The following references to the descriptions of orientations (e.g., front, rear, left, and right) are defined with respect to the manner of travel. The machine 100 may include an engine 8, a cab 7 in which a driver is located, a beam device 1, a boom 11, a working device 6, and the like. In embodiments where the machine 100 is a loader, the work implement may be a bucket 6 located at the front of the machine 100.

In fig. 1 it can also be seen that the boom 11 of the beam arrangement 1 is pivotally connected at one end thereof to the bucket 6; the other end is pivotally connected to the body of the machine 100. The boom 11 can be raised and lowered upwards by the action of an actuator 9 (usually a hydraulic actuator in machines, but also an electric, pneumatic, etc. actuator). The bucket 6 pivotally connected to the boom 11 is actuated by another actuating device 10 via a link 16, a swing arm 13, and the like (see fig. 2 and 3), so as to be capable of swinging about an axis pivotally connected to the boom 11, thereby performing a series of operations such as shoveling, loading, transporting, digging, and the like.

Fig. 2 shows the cross-beam arrangement 1 according to the invention in a perspective view, with two parallel arms 11 of the machine 100 being visible, which arms are pivotally connected to the bucket 6 at the left-hand end of the representation in fig. 2, for example by a pivot, and to the right-hand end of the representation in fig. 2, for example, to the machine 100. In the present embodiment, a description will be given taking the loader 100 mounted with the bucket 6 as an example. Of course, it is contemplated that the teachings of the present disclosure may be used on other types of work machines or machines as well as on such loaders. In the loader 100 as shown in fig. 1, the work implement bucket 6 is subjected to a large load when performing a shoveling, loading, unloading, etc., and thus it is common to pivotally connect two parallel-arranged booms 11 to the bucket 6 at both lateral ends thereof so that the booms 11 can raise and lower the bucket. Therefore, a cross beam 12 is required between the two parallel-arranged booms 11 to connect, fix, support, etc. Furthermore, the operating parts of the bucket 6, such as the swing arm 13, the connecting rod 16, also require support of the cross beam. Therefore, the structure of the entire beam device 1 is very important.

According to the utility model discloses a crossbeam 12 of crossbeam device 1 has adopted the section bar to replace the welding subassembly for reduce the welding position, reduce welding process from this. In particular, as shown in the present embodiment, the profile is a seamless steel pipe having a circular cross section. Of course, other types of profiles or profiles with other cross-sections may be used instead. But most preferably is a seamless steel tube with a circular cross-section because a steel tube with a circular cross-section has better structural strength and torsional resistance.

To further illustrate the structure of the cross beam 12, a cross beam arrangement 1 according to the invention is shown in an exploded view in fig. 3. It can be clearly seen that the cross beam 12 is made up of a first tube 121 and a second tube 122. Between which the ear plate 14 is arranged. The first tube 121 and the second tube 122 are each welded at their ends remote from one another to two parallel-arranged boom arms 11. The first tube element 121 and the second tube element 122 are in turn each fixedly connected with their ends facing one another on both sides of the lug 14 between the two first tube elements 121 and the second tube element 122, whereby the beam 12 according to the invention is formed by the connection of the lug 14.

In the present embodiment, the ear plate 14 is a generally oval plate having a large end and a small end, and it is contemplated that the ear plate 14 may have other geometries to suit its structural environment. The ear plate 14 forms an opening 141 in the portion located in the tube bore and is provided at the other end with a pivot structure 142 for pivotal connection with the rocker arm 13. The lug plate 14 is welded at both sides to the ends of the first and

second pipe members

121 and 122, respectively, whereby one weld is formed at each side of the lug plate 14. The mentioned openings 141 are located in the area of the lug plate 14 surrounded by the weld seam for saving weight and material of the lug plate, while at the same time not affecting the fixed connection, preferably welded, of the lug plate 14 to the tube.

As mentioned earlier, the ear plate 14 also provides support for operating elements of a work implement such as the bucket 6. The ear plate 14 may be connected to a middle portion of the swing arm 13 by a pivot (not shown), as shown in fig. 2. The rocker arm 13 can thus swing about this pivot. The rocker arm 13 is connected at one end to the actuating means 10 and at the other end pivotally connected to a link 16 by a pivot structure. The link 16 is in turn pivotally connected to the bucket 6. Thus, when the actuating means 10 pushes or pulls the rocker arm 13, the rocker arm 13 oscillates and pulls or pushes the link 16. And because the connecting rod 16 is pivotally connected with the bucket 6, the connecting rod 16 drives the bucket 6 to swing around a pivot axis and even turn, so that the actions of shoveling, loading, unloading and the like are realized in cooperation with the lifting and descending of the movable arm 11.

A stopper 15 is also provided on the ridge portion on the upper side of the ear plate 14. The stop 15 is mounted laterally at a ridge above the aperture 141 of the lug 14 as shown in the drawings for preventing over-tipping of the swing arm 13 and thus of the bucket 6 or other working device. The stop member 15 may be any known stop mechanism and may be disposed at a suitable location on the ear plate 14 as appropriate to achieve the desired degree of stop.

Although not shown in the figures, it is contemplated that the cross beam 12 may also be comprised of more than two tubes and more than one ear, such as three tubes and two ears, etc. However, if allowed, it is preferred to have only two tube members and one lug, so that the construction can be simplified to the maximum while satisfying the structural strength and minimizing the welding step. However, when the machine 100 is bulky, the distance between the two movable arms 11 is large, or the working device is subjected to a large load and at least two lugs are required to support the rocker-link mechanism, a combination or more of, for example, three pipes and two lugs may be provided. For example, in the case of three pipe elements, two lug plates are welded between the three pipe elements, respectively, or the three pipe elements are welded to one another by means of two lug plates located between them, while the two pipe elements located at the two ends are welded to the boom at their ends remote from one another, respectively. Such an arrangement is more complex than a beam arrangement with only two tubes, but still saves welding steps compared to a conventional welding assembly and can be sufficiently strong. Because, according to the utility model discloses an advantage of crossbeam device lies in connecting the pipe fitting of being made by the section bar each other through the otic placode and saved and carried out the welded step alone to the otic placode, moreover owing to adopted the section bar as the pipe fitting, saved the welding that is used for constructing the crossbeam.

Industrial applicability

According to the utility model discloses a crossbeam device has realized the crossbeam that has sufficient intensity with simple mode through otic placode connection pipe fitting for the machine, has reduced manufacturing step simultaneously, especially welding step, and the cost is reduced has reduced the consumption on the production time.

Now, taking the loader 100 as an example, the mounting, operation, and the like of the beam device 1 of the loader 100 will be exemplarily described.

In the exemplary embodiment according to fig. 2 and 3, the crossbar device 1 comprises two parallel arms 11, a crossbar 12 and an ear plate 14, wherein the crossbar 12 is preferably composed of two tubes, namely a first tube 121 and a second tube 122. Of course, in a non-illustrated embodiment, the cross beam 12 can also have further pipe elements, which are connected to one another by lugs. Here, a manufacturing process of the cross beam device 1 will be described by taking a case including two pipe members and one lug plate 14 as an example. During manufacturing, the two movable arms 11, the first pipe 121, the second pipe 122 and the ear plate 14 are positioned by a tool. That is, the two pipe elements are oriented transversely to the two arms 11 arranged in parallel, and the lug 14 is arranged between the ends of the two pipe elements facing each other such that the opening or bore 141 of the lug 14 is located in a region overlapping the hollow interior of the two pipe elements, so that during welding, the weld seam can enclose this opening 141 such that the opening 141 is closed at the outer periphery. After the pre-positioning is completed, the two ends of the first and

second pipe members

121 and 122 away from each other and the two movable arms 11 arranged in parallel, and the two ends of the first and

second pipe members

121 and 122 facing each other and the two sides of the ear plate 14 are welded. The elements of the rocker arm 13 and the elements of the connecting rod 16 are also pre-positioned and welded to each other, thereby forming the rocker arm 13 and the connecting rod 16. One end of the connecting rod 16 is then connected to one end of the rocker arm 13 by means of a pivot, the other end of the rocker arm 13 being connected to the actuating device 10, and the rocker arm 13 being in turn pivotally connected to the lug 14 at its middle portion for support, whereby the beam device 1 according to the invention is manufactured.

Of course, in the case where the cross beam device 1 includes a plurality of pipe members, similarly, the two movable arms 11 arranged in parallel, the plurality of pipe members, and the lug plates are positioned by the tooling so that the respective lug plates are respectively sandwiched between the end portions of the respective pipe members that face each other, followed by welding, thereby manufacturing the cross beam device 1 according to the present invention.

The foundation the utility model discloses a beam device 1 has obviously reduced the welding step. It can be seen that owing to adopted the section bar and the foundation the utility model discloses an otic placode under the condition that only includes two pipe fittings, the foundation the utility model discloses only need few welding seams just can realize the otic placode structure that needs the crossbeam welded subassembly that a large amount of welding could realize and connect in the past. In particular, since the lug plate 14 is welded between the first pipe member 121 and the second pipe member 122 as a connecting member therebetween, a step of exclusively welding the lug plate 14 is omitted. After the basis has been adopted the utility model discloses a crossbeam device back, the otic placode can be with simple shape structure to can be through very simple step with its beading between each pipe fitting, thereby realize the installation of otic placode when realizing that the crossbeam is connected between the swing arm, and need not to make the otic placode have complicated structure like prior art. Thereby providing a significant savings in production steps and costs.

Particularly, when the adopted section bar is a seamless steel pipe with a circular cross section, higher torsional strength can be realized, welding is further reduced, and the production cost is saved.

The thus assembled beam device 1 can achieve various operations of the machine 100. For example, with reference to fig. 1 and 2, when the actuator 10 pushes the end of the swing arm 13 connected thereto forward, the swing arm 13 pulls the link 16 backward, whereby the bucket 6 swings toward the direction close to the machine 100, at which time operations such as digging, loading, etc. can be performed; when the actuator 10 pulls the end of the swing arm 13 connected thereto backwards, the swing arm 13 pushes the link 16 forwards, thereby tipping the bucket outwards or away from the machine, thereby enabling dumping, dozing, etc. operations. On the other hand, as can be seen from fig. 1, two booms 11 arranged in parallel are connected at one end to the bucket 6 and at the other end to the machine 100 in a pivoting manner, whereby the bucket 6 can be raised and lowered under the action of the actuating means. This raising and lowering of the bucket 6, in combination with its swinging and forward and backward movements of the machine 100, enables various operating tasks of the machine 100.

The scope of protection of the present invention is limited only by the claims. Thanks to the teachings of the present invention, those skilled in the art can make various modifications, amendments or replacements according to the specific situation without exceeding the protection scope of the present invention, and these modifications, amendments or replacements all fall into the protection scope of the present invention.

List of reference numerals

1 Cross beam device

6 bucket and working device

7 driver's cabin

8 engine

9 actuating device

10 actuating device

11 Movable arm

12 crossbeam

13 Rocker arm

14 ear plate

15 position limiting piece

16 connecting rod

121 first pipe fitting

122 second pipe fitting

141 opening

142 pivoting structure

Claims

1. A beam arrangement for a machine, comprising:

two booms arranged parallel to each other and pivotally connected to the machine;

the tubular cross beam is fixedly connected between the two movable arms;

the lug plate is fixedly connected with the cross beam and is used for supporting a rocker arm which is pivotally connected with the lug plate;

it is characterized in that the preparation method is characterized in that,

the tubular cross beam is formed by a plurality of sections of pipe fittings, the lug plates are arranged among the plurality of sections of pipe fittings, and the pipe fittings are fixedly connected with the lug plates and the side walls of the movable arms to form the cross beam.

2. Cross-member arrangement for a machine according to claim 1, characterized in that the ear plate forms an opening in the part that is located in the mouth of the tube.

3. The cross-beam apparatus for a machine of claim 1, wherein the tube is a seamless steel tube.

4. A beam arrangement for a machine according to claim 1, characterized in that the beam comprises a first and a second tube, which are welded at ends remote from each other to the two movable arms, respectively, and at ends facing each other to both sides of the lug plate arranged between the first and second tube, respectively.

5. A machine, comprising:

a working device;

the tubular cross beam is fixedly connected between the two movable arms;

it is characterized in that the preparation method is characterized in that,

6. The machine of claim 5 wherein the ear plate forms an opening in a portion of the tube that is located in the mouth of the tube.

7. The machine of claim 5, wherein the tubular is a seamless steel tube.

8. Machine according to claim 5, characterized in that said cross-beam comprises a first and a second tubular part, welded respectively to said two movable arms on the ends remote from each other and respectively to the two sides of said lug arranged between said first and second tubular parts on the ends towards each other.