CN203359850U - Jibs, jibs and cranes - Google Patents

Abstract

The utility model discloses an auxiliary arm, a boom and a crane. The auxiliary jib includes a truss (10), a tail (20) connected to one end of the truss (10), and a head (30) connected to the other end of the truss (10), wherein the truss (10) The cross section of the jib is triangular, and the triangular cross section gradually narrows from the tail to the head, so that the jib with smaller shape, lighter weight and lower manufacturing cost can achieve the same lifting performance as the prior art.

Description

Jibs, jibs and cranes

technical field

The utility model relates to an auxiliary arm. In addition, the utility model also relates to a boom and a crane

Background technique

As the improvement and extension of the main arm function, the jib of the crane can effectively improve the working range and lifting height of the crane, and is an important part of the crane. In particular, since the auxiliary arm is installed on the main arm for operation, it is far away from the crane. Therefore, the self-weight of the auxiliary arm has become an important factor affecting the lifting weight of the crane.

Therefore, under the premise of ensuring a certain lifting capacity, reducing the self-weight of the jib has become an important means to improve the lifting performance. Quadrilateral jibs are often used in current cranes, and their composition and structure are relatively complicated, and the weight is relatively heavy, which affects the lifting performance.

Utility model content

The technical problem to be solved by the utility model is to make the auxiliary arm smaller in shape, lighter in weight and lower in manufacturing cost while maintaining the same working level.

In order to solve the above technical problems, the utility model provides a jib, which includes a truss, a tail connected to one end of the truss, and a head connected to the other end of the truss, wherein the section of the truss is Triangular cross-section that tapers from tail to head.

Preferably, the truss includes three long round tubes forming the triangular cross-section, and short round tubes connected between two adjacent long round tubes, and the adjacent two short round tubes are formed with the corresponding long round tubes. is a triangular structure.

Preferably, the head includes a mounting plate mounted on the truss, and the mounting plate is simultaneously connected with the three oblong pipes.

Preferably, the tail portion includes a fork mounted on the truss.

Preferably, the tail part includes a connecting plate connected to the truss, four connecting short pipes are connected to the connecting plate, and the forks are respectively connected to ends of the short connecting pipes away from the connecting plate.

Preferably, the connecting plate is a triangular plate, two of the short connecting pipes are connected to one apex of the triangular plate, and the other two are respectively connected to the remaining two apexes of the triangular plate, so that the four short pipes The end portion of the connection stub is formed in a rectangular shape.

Preferably, a first reinforcing tube is connected between the ends of the adjacent connecting short tubes.

Preferably, a second reinforcing pipe is connected between adjacent short connecting pipes, and the second reinforcing pipe is adjacent to two ends of each of the short connecting pipes.

The utility model also provides a boom, which includes the auxiliary arm according to any one of the above technical solutions, and the auxiliary arm is connected to the main arm.

The utility model also provides a crane, which includes a jib, and the boom is the boom mentioned in the above technical solution.

Through the above technical solution, since the cross-section of the truss is triangular, the mechanical properties of the material of the jib can be better utilized, and the utilization layout of the material is more reasonable. Simultaneously because this triangular cross-section narrows gradually from tail part to head, that is to say the weight of its material is smaller the farther away from tail part, thereby improves the effect of lifting performance. Therefore, by using the jib described in the above technical solution, the jib with smaller shape, lighter weight and lower manufacturing cost can achieve the same lifting performance as the prior art.

Other features and advantages of the present utility model will be described in detail in the following specific embodiments.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, together with the following specific embodiments, are used to explain the utility model, but do not constitute a limitation to the utility model. In the attached picture:

Fig. 1 is a perspective view of the auxiliary arm provided by the preferred embodiment of the present invention.

Explanation of reference signs

10 Truss 11 Long round tube

12 short round tube

20 Tail 21 Connecting plate

22 The second reinforcing tube 23 Connecting short tube

24 The first reinforcing pipe 25 Fork head

30 head 31 mounting plate

Detailed ways

The specific embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the utility model, and are not intended to limit the utility model.

The use of orientation words such as "up, down, left, right" generally refers to up, down, left, and right as shown with reference to the drawings; "inside, outside" refers to inside and outside relative to the outline of each part itself.

A kind of jib described in the utility model, the jib includes a truss 10, a tail 20 connected to one end of the truss 10, and a head 30 connected to the other end of the truss 10, wherein the truss 10 The section is a triangular section, and the triangular section tapers from the tail to the head.

In this way, compared with the quadrangular cross-section auxiliary arm in the prior art, the triangular cross-section provided by the utility model can make the auxiliary arm smaller in appearance and lower in weight while enabling the auxiliary arm to bear the same load. Lighter and less expensive to manufacture. Because the jib is mainly subjected to bending stress, according to the distribution of the stress, the jib with a triangular cross-section can better exert the mechanical properties of the jib material, making the material utilization layout more reasonable.

Simultaneously because this triangular cross-section becomes smaller gradually, just the weight of its material is smaller the farther away from the tail, also can play the effect of improving lifting performance more.

As a specific embodiment of the present utility model, as shown in FIG. 1, the truss 10 includes three long round tubes 11 forming the triangular section, and is connected (preferably welded) between two adjacent long round tubes 11 The short round tubes 12 between them, two adjacent short round tubes 12 and the corresponding long round tubes 11 form a triangular structure.

In this way, the strength of the auxiliary arm can be maintained with the minimum weight through the triangular reinforcement structure, so as to achieve the purpose of the utility model.

In addition, the head 30 includes a mounting plate 31 mounted on the truss 10 , and the mounting plate 31 is connected to the three oblong pipes 11 at the same time. That is to say, the head 30 is installed (preferably welded) on the truss 10 through the mounting plate 31, so that the three oblong tubes 11 can be reliably held on the mounting plate 31, and the setting of the head 30 can be made The way is more diversified.

On the basis of the above technical solution, the tail part 20 includes a fork 25 installed on the truss 10 . That is to say, one end of the tail part 20 is installed (preferably welded) on the truss 10, and the other end of the tail part 20 is connected with four forks 25, so that the auxiliary arm can be easily connected with the main arm.

More specifically, in order to facilitate the installation of the four prongs on the three long round pipes 11, the tail 20 includes a connecting plate 21 installed (preferably welded) with the truss, and four connecting short pipes are connected to the connecting plate 21 23 , the four forks 25 are respectively installed (preferably welded) on the ends of the four connecting short pipes 23 away from the connecting plate 21 .

In this way, the four short connecting pipes 23 can be reliably held on the connecting plate, and the connection between the fork 25 and the short connecting pipes 23 can also be realized simply and reliably. That is, the transition from the truss 10 formed with a triangular cross-section to a quadrilateral formed by four prongs can be reliably achieved.

As one of the specific preferred modes, the connecting plate 21 is a triangular plate, two of the connecting short pipes 23 are connected (preferably welded) to a vertex of the triangular plate, and the other two are respectively connected (preferably welded) to On the remaining two vertices of the triangular plate, the ends of the four connecting short pipes 23 are formed into a rectangle. In this way, the connection between the truss 10 and the tail is continuously facilitated, and the connection positions such as welding can be reduced to the greatest extent, so as to improve the working efficiency and reduce the manufacturing cost.

As another specific embodiment, the connecting plate is an annular plate, and the connecting short pipes 23 are uniformly welded on the annular plate at intervals of 90 degrees. The oblong tubes 11 are uniformly welded on the other side of the annular plate at intervals of 120 degrees.

In addition, it is also possible to use three connected short circular tubes instead of the triangular plate.

In the technical aspect of the above technical solution, the first reinforcing pipe 24 is connected between the ends of the adjacent connecting short pipes 23 . In this way, the relative positional relationship between the connecting short pipes 23 connected with the forks 25 can be more reliable.

Further, a second reinforcing tube 22 is connected between the adjacent short connecting tubes 23, and the second reinforcing tube is arranged between the two ends of each connecting short tube in the adjacent connecting short tubes 23. , so that the end of the tail portion connected to the truss 10 formed in a triangular cross-section can reliably transition to the end capable of forming a fork 25 formed in a quadrilateral.

The utility model also provides a boom, which includes the auxiliary arm according to any one of the above technical solutions, and the auxiliary arm is connected to the main arm. Compared with the prior art, the auxiliary jib has smaller profile, lighter weight and lower manufacturing cost, so the jib can have better lifting performance.

The utility model also provides a crane, which includes a jib, wherein the boom is the boom according to the above technical solution, so better lifting performance can be achieved at a lower manufacturing cost.

The preferred embodiment of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the specific details of the above-mentioned embodiment, and within the scope of the technical concept of the utility model, the technical solution of the utility model can be carried out in many ways. These simple modifications all belong to the protection scope of the present utility model. For example, change the installation and connection method from welding to connection by fasteners.

In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way if there is no contradiction. The combination method will not be explained separately.

In addition, any combination of various implementations of the present invention can also be made, as long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.

Claims (10)

1. an auxiliary, this auxiliary comprises truss (10), be connected to the afterbody (20) of described truss (10) one ends, with the head (30) that is connected to described truss (10) other end, it is characterized in that, the cross section of described truss (10) is triangular-section, and this triangular-section dwindles to head gradually from afterbody.

2. auxiliary according to claim 1, it is characterized in that, described truss (10) comprises three Circular Pipes (11) that form described triangular-section, and being connected to the short pipe (12) between adjacent two described Circular Pipes (11), adjacent two described short pipes (12) form triangular structure with corresponding described Circular Pipe (11).

3. auxiliary according to claim 2, is characterized in that, described head (30) comprises the adapter plate (31) be installed on described truss (10), and described adapter plate (31) links together with described three Circular Pipes (11) simultaneously.

4. auxiliary according to claim 1, is characterized in that, described afterbody (20) comprises the jaw (25) be installed on described truss (10).

5. auxiliary according to claim 4, it is characterized in that, described afterbody (20) comprises the connecting panel (21) be connected with described truss, be connected to the upper four connection short tubes of this connecting panel (21) (23), described jaw (25) is connected on the end of described connection short tube (23) away from described connecting panel (21).

6. auxiliary according to claim 5, it is characterized in that, described connecting panel (21) is set square, two summits that are connected in described set square in described connection short tube (23), other two are connected on remaining two summits of described set square, so that the described end of four described connection short tubes (23) forms rectangle.

7. according to the described auxiliary of claim 5 or 6, it is characterized in that, between the described end of adjacent described connection short tube (23), be connected with the first reinforced pipe (24).

8. according to the described auxiliary of claim 5 or 6, it is characterized in that, also be connected with the second reinforced pipe (22) between adjacent described connection short tube (23), this second reinforced pipe is arranged between two ends of each the described connection short tube in adjacent described connection short tube (23).

9. an arm, is characterized in that, this arm includes according to the described auxiliary of any one in claim 1-8, and described auxiliary is connected in principal arm.

10. a hoisting crane, this hoisting crane includes auxiliary, it is characterized in that, and described arm is arm according to claim 9.

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