CN218201906U

CN218201906U - Arm section, arm support and tower crane

Info

Publication number: CN218201906U
Application number: CN202221565345.8U
Authority: CN
Inventors: 徐�明; 李桂芳; 孙旭国; 王波
Original assignee: Zoomlion Construction Crane Co Ltd
Current assignee: Zoomlion Construction Crane Co Ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2023-01-03
Anticipated expiration: 2032-06-21

Abstract

The utility model belongs to the technical field of jack-up and a boom section, cantilever crane and tower crane are provided, wherein the boom section includes the upper chord subassembly, lower chord subassembly and down tube support assembly, lower chord subassembly and upper chord subassembly interval setting from top to bottom, the lower chord subassembly includes horizontal web member and the horizontal first lower chord, second lower chord and the third lower chord that sets up in proper order the interval, between first lower chord and the second lower chord, and connect through horizontal web member between second lower chord and the third lower chord respectively. The utility model provides an arm festival is through setting up the lower chord subassembly into first lower chord, second lower chord and third lower chord, when making the arm festival have good jack-up load performance, can set up the specification of first lower chord, second lower chord and third lower chord littleer to reach the purpose that reduces the cantilever crane size and compromise the jack-up load performance of cantilever crane.

Description

Arm section, arm support and tower crane

Technical Field

The utility model belongs to the technical field of the jack-up, concretely relates to arm festival, cantilever crane and tower crane.

Background

A tower crane, also known as a tower crane, generally includes a tower body, a balance arm, and a boom, wherein the boom is formed by splicing a plurality of boom segments. For convenience of assembly and transportation, the arm sections of the crane arms of the conventional tower crane are generally of an integral structure with a triangular or quadrangular cross section, and in an ultra-large tower crane, in order to meet the requirements of hoisting load and stability, the outer dimensions of the arm sections of the crane arms are generally large, so that the transportation cost is high, and the installation is very troublesome.

SUMMERY OF THE UTILITY MODEL

To foretell defect or not enough, the utility model provides an arm festival, cantilever crane and tower crane aims at solving current tower crane's jib loading boom and is difficult to compromise the technical problem who guarantees hoisting performance and reduce the size of jib loading boom simultaneously.

In order to achieve the purpose, the utility model provides an arm section, wherein the arm section comprises an upper chord component, a lower chord component and an inclined rod supporting component, wherein the lower chord component and the upper chord component are arranged at intervals up and down, the lower chord component comprises a horizontal web member and a first lower chord, a second lower chord and a third lower chord which are arranged at intervals in sequence transversely, and the first lower chord and the second lower chord as well as the second lower chord and the third lower chord are connected through the horizontal web member respectively; the diagonal member supporting assembly is used for connecting the upper chord member with the first lower chord member, the second lower chord member and the third lower chord member respectively.

The utility model discloses an in the embodiment, the first upper chord and the second upper chord that the upper chord subassembly includes horizontal vaulting pole and horizontal interval setting are connected through horizontal vaulting pole between first upper chord and the second upper chord, and first upper chord passes through diagonal bracing subassembly to be connected with first lower chord and second lower chord respectively, and the second upper chord passes through diagonal bracing subassembly to be connected with second lower chord and third lower chord respectively.

The utility model discloses an in the embodiment, the down tube supporting component includes a plurality of oblique web members, is connected through a plurality of oblique web members respectively between first upper chord and the first lower chord, between first upper chord and the second lower chord, between second upper chord and the third lower chord.

The utility model discloses an in the embodiment, the quantity of horizontal web member is a plurality of, is connected through a plurality of horizontal web members respectively between first lower chord and second lower chord and third lower chord.

In order to achieve the above object, the present invention also provides an arm support, wherein the arm support comprises the arm section according to the above.

The utility model discloses an in the embodiment, the cantilever crane includes a plurality of arm sections that connect gradually, and the both ends of first lower chord, second lower chord and third lower chord on every arm section are provided with first connecting block and second connecting block respectively, and the second connecting block is used for corresponding the connection with the first connecting block on the next arm section.

The utility model discloses an in the embodiment, seted up the open slot on the second connecting block, the first connecting block on the next arm festival can stretch into in the open slot of the second connecting block of last arm festival to be connected with the second connecting block through the connecting piece.

The utility model discloses an in the embodiment, the connecting piece is the round pin axle, has all seted up round pin axle on first connecting block and the second connecting block and has worn to establish the hole.

The utility model discloses an in the embodiment, the upper chord subassembly of every arm section all includes first upper chord and the second upper chord that the interval set up, and the both ends of first upper chord and second upper chord are equallyd divide and do not are provided with the connection otic placode, and the connection otic placode is used for corresponding the connection with next arm section.

In order to achieve the above object, the present invention also provides a tower crane, wherein the tower crane comprises the boom according to the above.

Through the technical scheme, the embodiment of the utility model provides an arm festival has following beneficial effect:

the cantilever crane is formed by splicing a plurality of arm sections, when the cantilever crane of the tower crane is used for hoisting, the upper chord component of each arm section is mainly stressed, the lower chord component is mainly stressed, and the lower chord component is stressed under the condition that the factors such as stability, rotation inertia force and wind load are considered to be larger. To sum up, the utility model provides an arm festival sets up to first lower chord, second lower chord and third lower chord through with lower chord subassembly, when guaranteeing that the arm festival has the same jack-up load performance with the arm festival of current triangle-shaped or quadrangle structure, can set up the specification of first lower chord, second lower chord and third lower chord littleer to reach the purpose that reduces the cantilever crane size and compromise the jack-up load performance of cantilever crane.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide an understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention, but do not constitute a limitation of the invention. In the drawings:

fig. 1 is a mechanism schematic diagram of one perspective of an arm segment according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a connection between a first lower chord and a second lower chord of an arm section according to an embodiment of the present invention;

fig. 3 is an enlarged schematic view of a portion a of fig. 2 according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a connection between the first upper chord and the first lower chord of the arm section according to an embodiment of the present invention.

Description of the reference numerals

1. Upper chord component 11 horizontal stay bar

12. First top chord 13 second top chord

14. Connecting lug plate 2 lower chord component

21. Horizontal web member 22 first lower chord

23. Second lower chord 24 third lower chord

25. First connecting block 26 and second connecting block

3. Diagonal member supporting component 31 diagonal web member

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present invention.

The arm section of the present invention is described below with reference to the drawings.

The utility model provides an arm section, as shown in figure 1, wherein, the arm section includes:

an upper chord member 1;

the lower chord component 2 is arranged at intervals from the upper chord component 1 up and down, the lower chord component 2 comprises a horizontal web member 21, and a first lower chord 22, a second lower chord 23 and a third lower chord 24 which are sequentially arranged at intervals in the transverse direction, and the first lower chord 22 and the second lower chord 23 as well as the second lower chord 23 and the third lower chord 24 are respectively connected through the horizontal web member 21; and

and the diagonal member supporting assembly 3 is used for connecting the upper chord member 1 with the first lower chord member 22, the second lower chord member 23 and the third lower chord member 24 respectively.

The arm support is formed by splicing a plurality of arm sections, when the arm support of the tower crane is used for hoisting operation, the upper chord component 1 of each arm section is mainly stressed, the lower chord component 2 needs to consider that the factors such as stability, rotation inertia force, wind load and the like are stressed more, because the lower chord component 2 comprises the first lower chord 22, the second lower chord 23 and the third lower chord 24 which are transversely and sequentially arranged at intervals, the stress borne by the lower chord component 2 can be uniformly distributed by the first lower chord 22, the second lower chord 23 and the third lower chord 24, the stress borne by each lower chord is smaller, and when the chords are in model selection, the lower chord with smaller specification is used as the first lower chord 22, the second lower chord 23 and the third lower chord 2, so that the stress load demand of the arm sections can be met. To sum up, the utility model provides an arm section is through setting up lower chord member 2 into first lower chord 22, second lower chord 23 and third lower chord 24, when guaranteeing that arm section and current triangle-shaped or quadrangle structure's arm section has the same jack-up load performance, can set up first lower chord 22, second lower chord 23 and third lower chord 24's specification ground littleer to reach the purpose that reduces the cantilever crane size and compromise the jack-up load performance of cantilever crane.

As shown in fig. 1, in the embodiment of the present invention, the upper chord assembly 1 includes a horizontal brace 11 and a first upper chord 12 and a second upper chord 13 which are arranged at a horizontal interval, the first upper chord 12 and the second upper chord 13 are connected through the horizontal brace 11, the first upper chord 12 is connected with a first lower chord 22 and a second lower chord 23 through an inclined strut supporting assembly 3, and the second upper chord 13 is connected with a second lower chord 23 and a third lower chord 24 through an inclined strut supporting assembly 3. When the crane lifts, because the length of the arm support is long, the upper chord component 1 and the lower chord component 2 of each arm section can bear large force, the upper chord component 1 is arranged into the first upper chord 12 and the second upper chord 13 which are transversely arranged at intervals, the first upper chord 12 and the second upper chord 13 can evenly distribute the tensile force borne by the upper chord component 1, so that the size of the arm support can be further reduced by reducing the sizes of the first upper chord 12 and the second upper chord 13 at the beginning of manufacturing while ensuring that the upper chord component 1 has the original stress load performance, preferably, the cross section of the whole arm section is in a trapezoid shape with a wide bottom and a narrow top, the stress characteristic that the stress of the lower end of the arm section is larger than that of the upper end can be further met, the number of the horizontal bracing rods 11 can also be set to be multiple, and the connection stability of the upper chord component 1 can be ensured.

As shown in fig. 1 and 4, in the embodiment of the present invention, the diagonal member supporting assembly 3 includes a plurality of diagonal web members 31, and the first upper chord 12 and the first lower chord 22, the first upper chord 12 and the second lower chord 23, the second upper chord 13 and the second lower chord 23, and the second upper chord 13 and the third lower chord 24 are connected by the plurality of diagonal web members 31 respectively. The diagonal web members 31 are mainly used for force transfer and function to stabilize the structure.

As shown in fig. 1 and 2, in the embodiment of the present invention, the number of the horizontal web members 21 is plural, and the first lower chord 22 and the second lower chord 23, and the second lower chord 23 and the third lower chord 24 are connected by the plural horizontal web members 21 respectively. Because first lower chord 22, second lower chord 23, third lower chord 24 transversely set up in proper order at intervals, support through a plurality of horizontal web members 21 to make the frame construction that first lower chord 22, second lower chord 23, third lower chord 24 and a plurality of horizontal web members 21 are constituteed more firm. At the same time, the horizontal web members 21 also play a role of bearing the rotational inertia force and the wind load.

In order to achieve the above object, the utility model also provides an arm support, wherein, arm support includes according to above arm festival, because the arm support has adopted all technical scheme of above-mentioned embodiment, consequently have all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, no longer give unnecessary detail here.

As shown in fig. 2, in the embodiment of the present invention, the arm support includes a plurality of arm sections connected in sequence, the two ends of the first lower chord 22, the second lower chord 23 and the third lower chord 24 on each arm section are respectively provided with a first connecting block 25 and a second connecting block 26, and the second connecting block 26 is used for being connected with the first connecting block 25 on the next arm section correspondingly. The arm support of the crane is formed by sequentially splicing a plurality of arm sections, and a first connecting block 25 and a second connecting block 26 are respectively arranged at two ends of a first lower chord 22, a second lower chord 23 and a third lower chord 24 on each arm section, so that the lower ends of the arm sections can be conveniently spliced.

As shown in fig. 2 and fig. 3, in the embodiment of the present invention, an open slot is opened on the second connecting block 26, and the first connecting block 25 on the next arm section can extend into the open slot of the second connecting block 26 on the previous arm section, and is connected to the second connecting block 26 through a connecting member. When tower crane jack-up operation, the lower chord member 2 of every arm section receives compressive stress jointly, because first connecting block 25 joint on the next arm section is in the open slot, the tip of first connecting block 25 can with second connecting block 26 butt, and the open slot can be spacing with first connecting block 25, thereby can avoid the atress to stagger between first connecting block 25 and the second connecting block 26, guarantee the stability of connecting between the arm section, of course, can also connect through other modes between the lower chord of two arm sections, like otic placode etc..

As shown in fig. 3, in the embodiment of the present invention, the connecting member may be a pin, and the first connecting block 25 and the second connecting block 26 are both provided with a pin through hole. Through the round pin axle, can realize the high-speed joint between the lower chord of two arm sections, the connecting piece can also be for bolt etc. certainly.

As shown in fig. 1 and 4, in the embodiment of the present invention, the upper chord assembly 1 of each arm section includes the first upper chord 12 and the second upper chord 13 which are arranged at intervals, the two ends of the first upper chord 12 and the second upper chord 13 are equally provided with the connecting ear plates 14 respectively, and the connecting ear plates 14 are used for corresponding connection with the connecting ear plates 14 on the next arm section. Because the upper chord assembly 1 is under tension and the stress is smaller than that of the lower chord assembly 2, the upper chord assembly 1 of each arm section can be directly connected through the connecting lug plate 14, and the operation is convenient and fast.

In order to achieve the above object, the present invention also provides a tower crane, wherein the tower crane comprises the boom according to the above. Since the tower crane adopts all the technical solutions of the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of indicated technical features is significant. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. An arm segment, comprising:

an upper chord assembly (1);

the lower chord component (2) is arranged at an upper interval with the upper chord component (1) at a lower interval, the lower chord component (2) comprises a horizontal web member (21) and a first lower chord (22), a second lower chord (23) and a third lower chord (24) which are transversely arranged at intervals in sequence, and the first lower chord (22) is connected with the second lower chord (23) and the second lower chord (23) is connected with the third lower chord (24) through the horizontal web member (21); and

the diagonal support assembly (3) is used for connecting the upper chord assembly (1) with the first lower chord (22), the second lower chord (23) and the third lower chord (24) respectively.

2. The arm segment according to claim 1, characterized in that the upper chord assembly (1) comprises a horizontal strut (11) and a first upper chord (12) and a second upper chord (13) which are transversely arranged at intervals, the first upper chord (12) and the second upper chord (13) are connected through the horizontal strut (11), the first upper chord (12) is connected with the first lower chord (22) and the second lower chord (23) through the diagonal support assembly (3), and the second upper chord (13) is connected with the second lower chord (23) and the third lower chord (24) through the diagonal support assembly (3).

3. The arm segment according to claim 2, characterized in that the diagonal member support assembly (3) comprises a plurality of diagonal web members (31), and the first upper chord (12) and the first lower chord (22), the first upper chord (12) and the second lower chord (23), the second upper chord (13) and the second lower chord (23), and the second upper chord (13) and the third lower chord (24) are connected by a plurality of diagonal web members (31), respectively.

4. An arm segment according to any one of claims 1 to 3, characterized in that the number of horizontal web members (21) is plural, and the first lower chord (22) and the second lower chord (23) and the third lower chord (24) are connected by the plural horizontal web members (21), respectively.

5. An arm support, characterized in that it comprises an arm segment according to any one of claims 1 to 4.

6. The boom according to claim 5, characterized in that the boom comprises a plurality of boom sections connected in sequence, a first connecting block (25) and a second connecting block (26) are respectively arranged at two ends of the first lower chord (22), the second lower chord (23) and the third lower chord (24) on each boom section, and the second connecting block (26) is used for being correspondingly connected with the first connecting block (25) on the next boom section.

7. The boom support according to claim 6, characterized in that the second connecting block (26) is provided with an open slot, and the first connecting block (25) on the next arm section can extend into the open slot of the second connecting block (26) on the previous arm section and is connected with the second connecting block (26) through a connecting piece.

8. The arm support according to claim 7, wherein the connecting member is a pin, and the first connecting block (25) and the second connecting block (26) are both provided with a through hole for the pin.

9. The boom according to claim 6, characterized in that the upper chord assembly (1) of each arm section comprises a first upper chord (12) and a second upper chord (13) which are arranged at intervals, two ends of the first upper chord (12) and the second upper chord (13) are respectively provided with a connecting ear plate (14), and the connecting ear plates (14) are used for being correspondingly connected with the next arm section.

10. A tower crane, characterised by comprising a boom according to any one of claims 5-9.