CN216662312U

CN216662312U - Cargo boom

Info

Publication number: CN216662312U
Application number: CN202122712550.4U
Authority: CN
Inventors: 张庆彬; 付玉琴; 李利娟; 佟雪峰
Original assignee: Xuzhou Heavy Machinery Co Ltd
Current assignee: Xuzhou Heavy Machinery Co Ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-06-03
Anticipated expiration: 2031-11-08

Abstract

The utility model discloses a cargo boom, which comprises a cylinder body C arranged at the tail end of a main boom, wherein a first part box is arranged on one side of the cylinder body C, and a second part box is arranged on the other side of the cylinder body C; be equipped with the space between the inner wall of barrel C and first portion case and the second portion case, be equipped with shrouding, baffle and the cavity that all is equipped with and is used for consolidating barrel C in the space. The first part box is symmetrically arranged along the radial direction of the cylinder C; the second part box covers the bottom edge of the cylinder C. The utility model has reasonable structure, ensures that the tail end of the main arm of the crane boom has better rigidity transition, reduces stress concentration, obviously improves the strength of the cylinder body at the tail end of the main arm, eliminates weak points and further improves the overall safety.

Description

Cargo boom

Technical Field

The utility model relates to the technical field of hoisting equipment, in particular to a crane boom.

Background

When the automobile crane boom works, the main bearing part is a boom system, and the boom system generally comprises a main boom and an auxiliary boom. For a crane boom with an ultra-large tonnage, corresponding boom length and performance are required to achieve a larger hoisting height and hoisting capacity. Limited by the length of the main arm, the method can be realized only by increasing the length of the auxiliary arm. The performance requirement is higher under the condition of meeting the length condition, so that the dead weight load and the hoisting load of the auxiliary arm are both larger, and the requirement on the bearing capacity of the tail end structure of the main arm is higher.

In the prior art, the bearing capacity of the main arm tail end mechanism is enhanced by increasing the thickness of a main plate of the cylinder body and enlarging the size of the cylinder body. But the bending resistance of the section of the cylinder is not obviously improved, and the weight is obviously increased. A significant increase in weight offsets a portion of the lifting performance. As the size of the cross section of the cylinder body at the tail end of the main arm is increased, the size of the arm joint at the outermost layer is correspondingly increased, the sizes of other structures of the complete machine matched with the main arm need to be increased, and for the automobile crane boom with the limited height and width of the complete machine, the expandable space of the super-tonnage crane boom is limited.

SUMMERY OF THE UTILITY MODEL

The utility model provides a crane boom for overcoming the defects in the prior art.

In order to solve the problems, the utility model adopts the following technical scheme: a cargo boom is characterized by comprising a cylinder body C arranged at the tail end of a main boom, wherein a first part box is arranged on one side of the cylinder body C, and a second part box is arranged on the other side of the cylinder body C; the first part box and the second part box comprise sealing plates and partition plates; the shrouding connect in on barrel C's the inner wall, and be equipped with the space between shrouding and the barrel C, be equipped with the baffle that is used for consolidating barrel C in the space.

Further, the first part box is symmetrically arranged along the radial direction of the cylinder C; the second part box covers the bottom edge of the cylinder C.

Furthermore, a partition plate is arranged in a gap between the first part box and the first part box, one side of the partition plate is connected to the sealing plate, and the other side of the partition plate is provided with the inner wall of the cylinder C.

Furthermore, a plurality of cavities separated by second partition plates are arranged in the gaps of the first part box and the first part box.

Furthermore, a plurality of channel steel used for fixing the cylinder C are arranged on the cylinder C.

Further, the channel-section steel includes channel-section steel D and channel-section steel E, barrel C's top is located to channel-section steel D, channel-section steel E locates barrel C's middle section.

Further, the cross section of the cylinder C is circular arc or oval.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the first part box and the second part box are arranged on the cylinder body C at the tail end of the main arm of the crane boom, a gap is arranged between the inner wall of the cylinder body C and the first part box and between the inner wall of the cylinder body C and the second part box, and a sealing plate, a partition plate and a cavity which are used for reinforcing the cylinder body C are arranged in the gap. The utility model has reasonable structure, ensures that the tail end of the main arm of the crane boom has better rigidity transition, reduces stress concentration, obviously improves the strength of the cylinder body at the tail end of the main arm, eliminates weak points and further improves the overall safety.

Drawings

FIG. 1 is a state diagram of the combined hoisting operation of a main arm and an auxiliary arm of a crane arm provided by the embodiment of the utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 at B;

FIG. 3 is a schematic view of a boom structure provided by an embodiment of the present invention;

fig. 4 is a schematic structural view of a crane boom channel steel provided in an embodiment of the present invention;

in the figure: 1-a main arm; 2-the auxiliary arm; 3-a variable amplitude oil cylinder; 4-barrel A; 5-cylinder B; 6-a first tank; 61-a first closing plate; 62-a first separator; 63-a first cavity; 7-a second tank; 71-a second sealing plate; 72-a second separator; 73-a second cavity; 8-channel steel D; 9-channel steel E; 10-cylinder C.

Detailed Description

The present invention is further described with reference to the accompanying drawings, and the following examples are only for clearly illustrating the technical solutions of the present invention, and should not be taken as limiting the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically 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 by those of ordinary skill in the art through specific situations.

As shown in fig. 1, fig. 1 shows a combined hoisting operation state of a main arm and an auxiliary arm of a boom, and includes a main arm 1, an auxiliary arm 2, a luffing cylinder 3, and a hoisting weight G, wherein under the action of the hoisting weight G and the self weight of the auxiliary arm 2, an acting force F1 is borne by an upper portion 4 of a boom cylinder, and an acting force F2 is borne by a lower portion 5 of the boom cylinder.

As shown in fig. 2, in order to provide good load performance to the main arm 1 and the sub-arm 2 of the boom, the prior art has adopted a method of increasing the thickness of the plate material of the cylinder body and enlarging the size of the cross section of the cylinder body. Specifically, the plate thickness of the cylinder A4 and the plate thickness of the cylinder B5 are increased, so that the bending resistance of the whole section is increased, and the safety of the upper part and the lower part of the cylinder is improved; increasing the height and width of barrel a4 and barrel B5 and the bending resistance of the overall cross-section. The problem that the tail end of the main arm is weak in structural strength, poor in reliability under a large load and prone to fracture is solved through the mode.

As shown in fig. 3 to 4, the embodiment of the utility model provides a crane boom, which comprises a cylinder C provided with a boom tip, wherein the cross section of the cylinder C10 can be circular, circular arc, or elliptical, but is not limited thereto; a first part box 6 is arranged on one side of the cylinder C, and a second part box 7 is arranged on the other side of the cylinder C, in the embodiment, the first part box 6 is arranged on the top of the cylinder C10, and the second part box 7 is arranged on the bottom of the cylinder C10; the first header tank 6 includes a first cover plate 61 and a first partition plate 62; the second header tank 7 includes a second sealing plate 71 and a second partition plate 72; the sealing plate is connected to the inner wall of the cylinder C10, a gap is formed between the sealing plate and the cylinder C10, a partition plate used for reinforcing the cylinder C10 is arranged in the gap, the sealing plate and the partition plate are generally made of plates of 550-960 Mpa grade, and the sealing plate and the partition plate are made of high-strength plates, so that the load resistance can be increased to a greater extent, and the sealing plate and the partition plate are matched with a main material of the cylinder C10.

The first part box 6 is arranged symmetrically along the radial direction of the cylinder C10, in particular, the first part box 6 is arranged at the left side and the right side of the cylinder C10; the second tank 7 covers the bottom edge of the cylinder C10. A first partition plate 62 is arranged in a gap of the first box part 6, one side of the first partition plate 62 is connected with the first sealing plate 61, and the other side of the first partition plate 62 is connected with the inner wall of the cylinder C10; a plurality of first cavities 63 partitioned by first partition plates 62 are provided in the space of the first sub-tank 6. A second partition plate 72 is arranged in a gap of the second box part 7, one side of the second partition plate 72 is connected to the second sealing plate 71, and the other side of the second partition plate 72 is connected to the inner wall of the cylinder C10; a plurality of second cavities 73 partitioned by second partitions 72 are provided in the space of the second sub-tank 7.

A plurality of channel steel for fixing the cylinder C10 is arranged on the cylinder C10, in the embodiment, the channel steel comprises channel steel D8 and channel steel E9, the channel steel D8 is arranged at the top of the first box 6, and the number of the channel steel D8 is 3; the middle section of the cylinder C10 is provided with channel steel E9, the number of the channel steel E9 is 2, and the channel steel E9 is perpendicular to the channel steel D8.

The utility model has reasonable structure, ensures that the tail end of the main arm 1 of the crane boom has better rigidity transition, reduces stress concentration, obviously improves the strength of the cylinder body at the tail end of the main arm 1, eliminates weak points and further improves the overall safety of the crane boom.

Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the utility model as defined by the appended claims. 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. A cargo boom is characterized by comprising a cylinder body C (10) arranged at the tail end of a main boom (1), wherein a first part box (6) is arranged on one side of the cylinder body C (10), and a second part box (7) is arranged on the other side of the cylinder body C (10); the first tank part (6) and the second tank part (7) comprise sealing plates and partition plates; the shrouding connect in on the inner wall of barrel C (10), and be equipped with the space between shrouding and barrel C (10), be equipped with the baffle that is used for consolidating barrel C (10) in the space.

2. A boom according to claim 1, characterised in that the first sub-tank (6) is arranged radially symmetrically along the cylinder C (10); the second tank (7) covers the bottom edge of the cylinder C (10).

3. A boom according to claim 1, characterized in that a first baffle plate (62) is arranged in the gap of the first part box (6) and the first part box (6), one side of the first baffle plate (62) is connected to a first closing plate (61), and the other side of the first baffle plate (62) is connected to the inner wall of the cylinder C (10).

4. A boom according to claim 1, characterised in that the first part box (6) and the space of the first part box (6) are provided with cavities separated by partitions (72).

5. The crane boom of claim 1, characterized in that the cylinder C (10) is provided with a plurality of channel steels for fixing the cylinder C (10).

6. The crane boom of claim 5, wherein the channel steel comprises a channel steel D (8) and a channel steel E (9), the channel steel D (8) is arranged at the top of the cylinder body C (10), and the channel steel E (9) is arranged at the middle section of the cylinder body C (10).

7. A boom according to claim 1, characterised in that the cross-section of the cylinder C (10) is circular or oval.