Single-vehicle and double-vehicle widened arm section, single-vehicle and double-vehicle wide arm and crane

Abstract

The utility model belongs to the technical field of operation machinery, and discloses a single-vehicle and double-vehicle widened arm section, a single-vehicle and double-vehicle wide arm and a crane. The single-vehicle widening arm section comprises a wide-arm left support and a wide-arm right support which are symmetrically distributed in the width direction of the arm section and are the same in structure, and the wide-arm left support and the wide-arm right support each comprise a main chord member provided with an arm frame connecting lug hinge part and a plurality of wide-arm connecting supports. The bicycle wide arm comprises the bicycle widened arm section. And a wide arm transition arm section and a standard main arm section. The double-vehicle widening arm section comprises a wide arm left support unit and a wide arm right support unit. The double-vehicle wide arm comprises the double-vehicle widened arm section. And a plurality of standard main arm sections. The crane comprises the single-vehicle wide arm or the double-vehicle wide arm. The single-vehicle and double-vehicle widened arm section is good in stability and assembly performance. The single-vehicle wide-arm crane and the double-vehicle wide-arm crane are high in expansibility, high in practicability, wide in operation scene and high in efficiency. The crane is high in reliability and practicability.

Description

Technical Field

[0001] The present application belongs to the technical field of operating machinery, and in particular, relates to a single-vehicle or double-vehicle widened boom section and a single-vehicle or double-vehicle wide boom and a crane. Background Art

[0002] The boom is the key load-bearing structure of the lifting equipment. For higher lifting requirements, the boom can increase its width to improve the stability of the boom; when facing extremely high lifting requirements, two booms can also be spliced ​​to transform the single-arm boom structure into a double-arm boom structure, greatly improving the stability of the boom.

[0003] However, in the current lifting equipment, when faced with extremely high lifting requirements, if the boom of a single vehicle is a widened boom, splicing two booms will cause the boom to be overweight, making it difficult to lift the boom, and the boom is too large to be transported. If the boom of a single vehicle is not a widened boom, the stability of the boom is very limited. When faced with higher lifting requirements, it must be replaced with a widened boom or two booms must be spliced ​​together, which has high operating costs. In other words, it is inconvenient to adjust the stability of the boom. Summary of the invention

[0004] The purpose of the present application is to provide a single-vehicle, double-vehicle widened boom section and a single-vehicle, double-vehicle wide boom and crane, so as to reduce the replacement operation cost of the adjustable boom and improve the stability of the boom.

[0005] To achieve the above-mentioned purpose, the present application provides a bicycle widened arm section, which comprises a wide arm left bracket and a wide arm right bracket which are symmetrically distributed along the width direction of the arm section and have the same structure, and the wide arm left bracket and the wide arm right bracket both comprise:

[0006] A main chord extending along the length direction of the boom section, with an arm bracket connecting ear hinge portion provided at an axial end of the main chord; and

[0007] A plurality of wide arm connecting supports are arranged in sequence along the length direction of the arm section, and the wide arm connecting supports extend inwardly from the main chord and form an inner connecting end;

[0008] Among them, each inner connecting end in the wide arm left bracket is connected one by one with each inner connecting end of the wide arm right bracket. The wide arm left bracket and the wide arm right bracket both include a number of double-arm connecting supports, which are arranged at intervals on the outside of the main chord along the length direction of the arm section and extend outward along the width direction of the arm section.

[0009] In some embodiments, the wide arm connecting support includes a first side bar and a second side bar that form a triangle shape with the main chord, and the outer ends of the first side bar and the second side bar are connected to the main chord at intervals and the inner ends are abutted to form an inner connecting end.

[0010] In some embodiments, the wide arm left bracket and the wide arm right bracket both include:

[0011] A plurality of double-arm connecting supports are arranged at intervals on the outside of the main chord along the length direction of the arm section and extend outward along the width direction of the arm section.

[0012] The second aspect of the present application protects a bicycle wide arm, and the bicycle wide arm comprises:

[0013] The aforementioned bicycle widened arm section;

[0014] A wide-arm transition boom section, an arm frame connecting ear hinge portion connected to the end of the widened boom section of a single vehicle along the length direction of the boom section; and

[0015] The standard main boom section is connected to the wide boom transition section along the length of the boom section.

[0016] In some embodiments, the bicycle wide arm further includes a bottom arm and a top arm respectively arranged at two ends.

[0017] The third aspect of the present application protects a double-car widened boom section, which includes a wide-arm left bracket unit and a wide-arm right bracket unit symmetrically distributed along the width direction of the boom section, and the wide-arm left bracket unit and the wide-arm right bracket unit both include an outer bracket and an inner bracket stacked along the width direction of the boom section and having the same structure, and the outer bracket and the inner bracket both include:

[0018] A main chord extending along the length direction of the boom section, and an arm bracket connecting ear hinge portion is provided at the axial end of the main chord;

[0019] A plurality of wide arm connecting supports are arranged in sequence along the length direction of the arm section, and the wide arm connecting supports extend inwardly from the main chord and form an inner connecting end;

[0020] A plurality of double-arm connecting supports are arranged at intervals on the outside of the main chord along the length direction of the arm section and extend outward along the width direction of the arm section;

[0021] Among them, each inner connecting end of the inner bracket of the wide-arm left bracket unit is connected one by one with each inner connecting end of the inner bracket of the wide-arm right bracket unit, each inner connecting end of the left outer bracket of the wide-arm left bracket unit is connected one by one with each double-arm connecting support of the inner bracket, and each inner connecting end of the right outer bracket of the wide-arm right bracket unit is connected one by one with each double-arm connecting support of the inner bracket.

[0022] In some embodiments, the wide arm connecting support includes a first side bar and a second side bar that form a triangle shape with the main chord, and the outer ends of the first side bar and the second side bar are connected to the main chord at intervals and the inner ends of the first side bar and the second side bar are abutted to form an inner connecting end;

[0023] And / or, the main chord includes a first main chord and a second main chord arranged in parallel and at intervals, the first main chord and the second main chord are connected via a web member, and a plurality of wide arm connecting supports are respectively arranged on the first main chord and the second main chord.

[0024] The fourth aspect of the present application protects a double-car wide arm, which includes:

[0025] The above-mentioned double-car widened boom section; and

[0026] A number of standard main boom sections are used to connect to the ends of the wide boom left bracket unit and the ends of the wide boom right bracket unit of the double car widened boom section.

[0027] A fifth aspect of the present application protects a crane, which includes the above-mentioned single-car wide arm or the above-mentioned double-car wide arm.

[0028] In some embodiments, the above-mentioned single-car wide boom or the above-mentioned double-car wide boom is used as the main boom of the crane.

[0029] In the technical solution of the present application, the respective wide arm connecting supports on the main chords of the wide arm left and right brackets of the single-vehicle widened arm section extend toward each other, and are connected one by one through their respective inner connecting ends, so as to form a single-vehicle widened arm section with a truss structure with better stability. On the basis of the single-vehicle widened arm section with better stability, wide arm transition arm sections are respectively arranged at both ends of the single-vehicle widened arm section, and the standard main arm arm sections can be respectively arranged along the arm section length direction at the outer ends of the above-mentioned wide arm transition arm sections to extend the truss structure, thereby forming a single-vehicle wide arm. Such an arrangement can improve the practicality of the truss structure and facilitate assembly. On the basis of the single-vehicle widened arm section with better stability, the outer side support of the wide arm left bracket unit is installed on the left side of the double arm connecting support on the left side of the wide arm left bracket unit of the single-vehicle widened arm section, and the outer side support of the wide arm right bracket unit is installed on the right side of the double arm connecting support on the right side of the wide arm right bracket unit of the single-vehicle widened arm section, thereby forming two double-vehicle widened arm sections with a truss structure connected to each other through the wide arm connecting supports. Such arrangement can further improve the stability of the truss structure. On the basis of the double-car widened boom section with better stability, by connecting several standard main boom sections at the end of the wide arm left bracket unit of the double-car widened boom section and the end of the wide arm right bracket unit, the double-car widened boom section is extended along the boom section length direction, thereby further forming a double-car wide arm with greater length and better practicality. The above-mentioned single-car wide arm or the above-mentioned double-car wide arm included in the crane of the present application can be spliced ​​and assembled by the single-car widened boom section, and the lifting capacity is highly adjustable in the face of different lifting needs.

[0030] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative work. In the accompanying drawings:

[0032] Figure 1 It is a structural schematic diagram of a bicycle wide arm according to a specific embodiment of the present application;

[0033] Figure 2 for Figure 1 A schematic diagram of the structure of a bicycle widened arm section of a bicycle wide arm;

[0034] Figure 3 It is a structural schematic diagram of a double-car widened boom section according to a specific implementation mode of the present application;

[0035] Figure 4 for Figure 3 Axonometric view of the double-car widened boom section.

[0036] Description of Reference Numerals

[0037] C arm width direction 9 top arm

[0038] L Boom length direction D Double car widened boom

[0039] 8 Standard main boom section W Single bike widened boom section

[0040] 100a wide arm left bracket 110 main chord

[0041] 101 Outer bracket 111 Abdominal rod

[0042] 102 inner bracket 130 wide arm connecting bracket

[0043] 100b wide arm right bracket 131 first side bar

[0044] 1 Bottom arm 132 Second side bar

[0045] 10a Wide arm left bracket unit 140 inner connection end

[0046] 10b Wide arm right bracket unit 150 Arm bracket connecting ear hinge

[0047] 34 First wide arm transition arm section 44 Second wide arm transition arm section

[0048] 2 First double arm connecting support 7 Second double arm connecting support DETAILED DESCRIPTION

[0049] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0050] The single-vehicle and double-vehicle widened boom sections and the single-vehicle and double-vehicle wide booms and cranes according to the present application are described below with reference to the accompanying drawings.

[0051] The present application discloses a novel bicycle widening arm section, such as Figure 1 and Figure 2 As shown, a bicycle widened arm section W in a specific embodiment includes a wide arm left bracket 100a and a wide arm right bracket 100b which are symmetrically distributed along the width direction of the arm section and have the same structure, and the wide arm left bracket 100a and the wide arm right bracket 100b both include:

[0052] A main chord 110 extends along the length direction L of the boom section, and an arm bracket connecting ear hinge 150 is provided at an axial end of the main chord 110; and

[0053] A plurality of wide arm connecting supports 130 are arranged in sequence along the arm section length direction L, and the wide arm connecting supports 130 extend inwardly from the main chord 110 and form an inner connecting end 140;

[0054] Among them, each inner connecting end 140 in the wide arm left bracket 100a is aligned and connected with each inner connecting end 140 of the wide arm right bracket 100b. The wide arm left bracket 110a and the wide arm right bracket 100b both include a plurality of double-arm connecting supports 34, 44, which are arranged at intervals on the outside of the main chord 110 along the arm section length direction L and extend outward along the arm section width direction C.

[0055] Specifically, see Figure 2, the several wide arm left brackets 100a of the bicycle widened arm section W of the present application can be connected continuously in the arm section length direction L through their respective arm bracket connecting ear hinges 150, and the same is true for the wide arm right bracket 100b. In addition, the wide arm connecting supports 130 of the wide arm left and right brackets extend toward each other from their respective main chords 110, and after being aligned and connected one by one through their respective inner connecting ends 140, a bicycle widened arm section W with a truss structure with a larger width and better stability can be formed. Compared with the standard width section arm of the prior art, the bicycle widened arm section W of the present application has better stability; compared with the integrated bicycle widened arm section of the prior art, the bicycle widened arm section W of the present application has better assembly performance and is convenient for assembly and storage after disassembly. In addition, based on the single widened arm section W with better stability, the first wide arm left bracket among the plurality of wide arm left brackets 100a can be connected to each other through the first double arm connection support 34 of the first wide arm left bracket and the inner connection end 140 of the second wide arm left bracket along the arm section width direction C to form a first wide body truss structure; similarly, the wide arm right bracket 100b can also form a second wide body truss structure in the same way. Among them, the first wide body truss structure and the second wide body truss structure can be connected to each other at their innermost inner connection ends 140, thereby further forming a truss structure with better stability.

[0056] Of course, the wide arm connecting supports 130 of the wide arm left and right brackets extend toward each other from their respective main chords 110 and are connected one by one through their respective inner connecting ends 140, and the method in which several wide arm left brackets 100a are connected in succession in the arm section length direction L through their respective arm bracket connecting ear hinges 150 can be welding connection, detachable pin connection, etc.

[0057] In this embodiment, if Figure 2 As shown, the wide arm connecting support 130 includes a first side bar 131 and a second side bar 132 that form a triangle shape with the main chord 110 . The outer ends of the first side bar 131 and the second side bar 132 are connected to the main chord 110 at intervals and the inner ends thereof are abutted against each other to form an inner connecting end 140 .

[0058] Specifically, with such configuration, the wide arm connecting support 130 has a simple structure, saves materials, is easy to assemble and has good structural strength.

[0059] Of course, the first side bar 131 and the second side bar 132 are not limited to being arranged in a triangular shape with the main chord bar 110 , and other situations such as the first side bar 131 and the second side bar 132 being arranged parallel to each other are also included.

[0060] Of course, if Figure 2As shown, the position of the first double-arm connecting support 34 can be arranged on the main chord 110 in alignment with the inner connecting end 140 to ensure the convenience of splicing and combining the wide arm left and right brackets; it can also be arranged in a non-aligned manner to facilitate the processing of the wide arm left and right brackets. In addition, the number of wide arm left and right brackets connected to each other along the arm section width direction C is not limited to the above two, and can also be more; furthermore, the first wide arm left bracket among the plurality of wide arm left brackets 100a is connected to each other along the arm section width direction C through the first double-arm connecting support 34 of the first wide arm left bracket and the inner connecting end 140 of the second wide arm left bracket, which can be connected by welding, detachable pin connection, etc.

[0061] In this embodiment, if Figure 2 As shown, the main chord 110 includes a first main chord and a second main chord arranged in parallel and at intervals. The first main chord and the second main chord are connected via a web member 111. A plurality of wide arm connecting supports 130 are respectively arranged on the first main chord and the second main chord.

[0062] Specifically, see Figure 2 Such an arrangement can not only improve the structural strength of the main chord 110, but also improve the connection strength between the left and right wide arm brackets through the wide arm connecting support 130.

[0063] This application protects a bicycle wide arm, such as Figure 1 and Figure 2 As shown, a bicycle wide arm in a specific embodiment includes:

[0064] The above-mentioned bicycle widened arm section W;

[0065] A first wide arm transition arm section 2 and a second wide arm transition arm section 7 of the arm frame connecting ear hinge portion 150 connected to the end of the single-vehicle widened arm section W along the arm section length direction L; and

[0066] The standard main boom section 8 is connected to the wide boom transition sections 2 and 7 along the length direction L of the section.

[0067] Specifically, after the aforementioned single-vehicle widened arm section W of the truss structure with a larger width and better stability is formed, see Figure 1A first wide arm transition arm section 2 and a second wide arm transition arm section 7 can be respectively arranged at the bottom and top ends of the single-vehicle widened arm section W to facilitate the adaptation of the standard main arm section 8 in the arm section width direction C, and the truss structure can be extended in the arm section length direction L by connecting the standard main arm sections 8, and other functional section arms can be added to the standard main arm sections 8 at the end (for example, a top section arm 9 with one end detachably connected to the standard main arm section 8 and the other end detachably connected to the hoisting object, and a bottom section arm 1 with one end detachably connected to the standard main arm section 8 and the other end detachably connected to the vehicle body, etc.), thereby forming a single-vehicle wide arm with a longer length, higher practicality and higher expandability.

[0068] In this embodiment, if Figure 1 As shown, the bicycle wide arm also includes a bottom arm 1 and a top arm 9 respectively arranged at two ends.

[0069] Specifically, see Figure 1 With this design, the wide arms of the bicycle can be more expandable and easier to replace.

[0070] This application also protects a double-car widened arm section D, such as Figure 3 As shown, a double-car widened boom section D in a specific embodiment includes a wide arm left bracket unit 10a and a wide arm right bracket unit 10b symmetrically distributed along the width direction C of the boom section, and the wide arm left bracket unit 10a and the wide arm right bracket unit 10b both include an outer bracket 101 and an inner bracket 102 stacked along the width direction C of the boom section and having the same structure, and the outer bracket 101 and the inner bracket 102 both include:

[0071] The main chord 110 extends along the length direction L of the boom section, and the axial end of the main chord 110 is provided with a boom connection ear hinge 150;

[0072] A plurality of wide arm connecting supports 130 are arranged in sequence along the arm section length direction L, and the wide arm connecting supports 130 extend inwardly from the main chord 110 and form an inner connecting end 140;

[0073] A plurality of double arm connection supports 34, 44 are arranged at intervals on the outside of the main chord 110 along the arm section length direction L and extend outward along the arm section width direction C;

[0074] Among them, each inner connecting end 140 of the inner bracket 102 of the wide-arm left bracket unit 10a is connected one by one with each inner connecting end 140 of the inner bracket 102 of the wide-arm right bracket unit 10b, each inner connecting end 140 of the outer bracket 101 of the wide-arm left bracket unit 10a is connected one by one with each double-arm connecting support 34 of the inner bracket 102, and each inner connecting end 140 of the outer bracket 101 of the wide-arm right bracket unit 10b is connected one by one with each second double-arm connecting support 44 of the inner bracket 102.

[0075] Specifically, see Figure 3 , the first wide arm left bracket of the two wide arm left brackets 100a can be connected to each other through the first double arm connecting support 34 of the first wide arm left bracket and the inner connecting end 140 of the second wide arm left bracket along the arm section width direction C to form a wide arm left bracket unit 10a; similarly, the wide arm right bracket 100b can also form a wide arm right bracket unit 10b in the same way. The wide arm left bracket unit 10a and the wide arm right bracket unit 10b can be connected to each other through their innermost inner connecting ends 140, thereby further forming a double-car widened arm section D with better stability. Such an arrangement can greatly improve the stability of the truss structure and thus greatly improve the lifting capacity of the double-car widened arm section D. Compared with the standard width boom in the prior art, the double-car widened boom section D of the present application has better stability; compared with the integrated double-car widened boom section in the prior art, the single truss structure (i.e., the wide arm left bracket unit 10a or the wide arm right bracket unit 10b) in the double-car widened boom section D of the present application has a smaller truss structure width in the boom section width direction C, so the overall weight after splicing is smaller, so there is no difficulty in lifting, and further, the double-car widened boom section D of the present application can be disassembled, so there will be no transportation problems due to the excessive volume of the boom section; compared with the integrated double-car boom section in the prior art, the double-car widened boom section D of the present application can further widen the single truss structure to improve the lifting capacity. In addition, for example, when facing lifting requirements that cannot be met by the standard width boom structure, the double-car widened boom section D of the present application can be disassembled into a single-car wide arm structure composed of a single-car widened boom section W, thereby eliminating the need for lifting operations through a double-splicing structure with higher lifting conditions and lower operating efficiency, and therefore, the operating scenarios are wider and more efficient.

[0076] In this embodiment, if Figure 3 and Figure 4 As shown, the wide arm connecting support 130 includes a first side bar 131 and a second side bar 132 that form a triangle shape with the main chord 110. The outer ends of the first side bar 131 and the second side bar 132 are connected to the main chord 110 at intervals and the inner ends thereof are abutted against each other to form an inner connecting end 140.

[0077] And / or, the main chord 110 includes a first main chord and a second main chord arranged in parallel and at intervals, the first main chord and the second main chord are connected via a web member 111, and a plurality of wide arm connecting supports are respectively arranged on the first main chord and the second main chord.

[0078] Specifically, see Figure 4 With such arrangement, the double-car widening arm section D has a simple structure, saves materials, is easy to assemble and has good structural strength.

[0079] This application also protects a double-car wide arm, such as Figure 3 and Figure 4As shown, a double-car wide arm in a specific embodiment includes:

[0080] The above-mentioned double-car widened boom section D; and

[0081] A plurality of standard main boom sections 8 are used to be connected to the ends of the wide boom left bracket unit 10a and the ends of the wide boom right bracket unit 10b of the double-car widened boom section D.

[0082] Specifically, see Figure 3 Since the above-mentioned double-car widened boom section D has the advantages of a larger operating scene and higher efficiency, on the basis of the above-mentioned double-car widened boom section D, a double-car wide arm formed by connecting a number of standard main boom sections 8 at both ends of the double-car widened boom section D in the boom section length direction L also has the above-mentioned advantages, and is longer and more practical.

[0083] The present application also protects a crane, and the crane in some embodiments adopts the above-mentioned single-car wide arm or the above-mentioned double-car wide arm. Since the above-mentioned single-car wide arm and the above-mentioned double-car wide arm are both composed of a single-car widened arm section W that is easier to assemble and store after disassembly, and have the advantages of good stability, strong expansibility, strong practicality, wide range of operating scenarios, and high operating efficiency. Therefore, the crane of the present application can handle different lifting requirements with a suitable boom structure, and has higher reliability and stronger practicality.

[0084] In some embodiments, the above-mentioned single-car wide boom or the above-mentioned double-car wide boom is used as the main boom of the crane.

[0085] Of course, the above-mentioned single-car wide arm or the above-mentioned double-car wide arm is not limited to being used as the main arm of the crane, but can also be used in other positions such as the auxiliary arm or super-lift mast of the crane. In the description of the present application, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example two, three, etc., unless otherwise clearly and specifically defined.

[0086] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0087] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

Claims

1. Bicycle widened arm section, characterized in that: The bicycle widened arm section (W) comprises a wide arm left bracket (100a) and a wide arm right bracket (100b) which are symmetrically distributed along the width direction of the arm section and have the same structure. The wide arm left bracket (100a) and the wide arm right bracket (100b) both comprise: A main chord (110) extends along the length direction (L) of the boom section, and an arm bracket connecting ear hinge (150) is provided at an axial end of the main chord (110); and A plurality of wide arm connection supports (130) are arranged in sequence along the length direction (L) of the arm section, wherein the wide arm connection supports (130) extend inwardly from the main chord (110) and are formed with inner connection ends (140); Wherein, each of the inner connecting ends (140) in the wide arm left bracket (100a) is aligned and connected with each of the inner connecting ends (140) in the wide arm right bracket (100b), and the wide arm left bracket (100a) and the wide arm right bracket (100b) both include a plurality of double-arm connecting supports (34, 44), which are arranged at intervals along the length direction (L) of the arm section on the outside of the main chord (110) and extend outward along the width direction (C) of the arm section.

2. The bicycle widening arm section according to claim 1, characterized in that: The wide arm connecting support (130) comprises a first side bar (131) and a second side bar (132) which form a triangle shape with the main chord (110); the outer ends of the first side bar (131) and the second side bar (132) are connected to the main chord (110) at intervals and the inner ends of the first side bar (131) and the second side bar (132) are abutted against each other to form the inner connecting end (140).

3. The bicycle widening arm section according to claim 1 or 2, characterized in that: The main chord (110) comprises a first main chord and a second main chord arranged in parallel and at intervals, the first main chord and the second main chord are connected via a web member (111), and a plurality of wide arm connecting supports (130) are respectively arranged on the first main chord and the second main chord.

4. Bicycle wide arm, characterized in that: The bicycle wide arm include: A bicycle widened arm section (W) according to any one of claims 1 to 3; A wide-arm transition arm section (2, 7), the arm frame connecting ear hinge portion (150) connected to the end of the single-bike widened arm section (W) along the arm section length direction (L); and A standard main boom section (8) is connected to the wide boom transition section (2, 7) along the length direction (L) of the section.

5. The bicycle wide arm according to claim 4, characterized in that: The bicycle wide arm also includes a bottom arm (1) and a top arm (9) which are arranged at two ends.

6. Double-car widened boom section, characterized in that: The double-car widened boom section (D) comprises a wide-arm left bracket unit (10a) and a wide-arm right bracket unit (10b) symmetrically distributed along the width direction of the boom section, and the wide-arm left bracket unit (10a) and the wide-arm right bracket unit (10b) both comprise an outer bracket (101) and an inner bracket (102) stacked along the width direction of the boom section and having the same structure, and the outer bracket (101) and the inner bracket (102) both comprise: A main chord rod (110) extends along the length direction (L) of the boom section, and an arm bracket connecting ear hinge portion (150) is provided at an axial end of the main chord rod (110); A plurality of wide arm connection supports (130) are arranged in sequence along the length direction (L) of the arm section, wherein the wide arm connection supports (130) extend inwardly from the main chord (110) and are formed with inner connection ends (140); A plurality of double arm connection supports (34, 44) are arranged at intervals on the outside of the main chord (110) along the length direction (L) of the arm section and extend outward along the width direction of the arm section; Wherein, each inner connecting end (140) of the inner side bracket (102) of the wide-arm left bracket unit (10a) is connected in a one-to-one correspondence with each inner connecting end (140) of the inner side bracket (102) of the wide-arm right bracket unit (10b); each inner connecting end (140) of the left outer side bracket (101) of the wide-arm left bracket unit (10a) is connected in a one-to-one correspondence with each double-arm connecting support (34, 44) of the inner side bracket (102); and each inner connecting end (140) of the right outer side bracket (101) of the wide-arm right bracket unit (10b) is connected in a one-to-one correspondence with each double-arm connecting support (34, 44) of the inner side bracket (102).

7. The double-car widened boom section according to claim 6, characterized in that: The wide arm connecting support (130) comprises a first side bar (131) and a second side bar (132) which form a triangle shape with the main chord (110), wherein the outer ends of the first side bar (131) and the second side bar (132) are connected to the main chord (110) at intervals and the inner ends thereof are abutted against each other to form the inner connecting end (140); And / or, the main chord (110) comprises a first main chord and a second main chord arranged in parallel and at intervals, the first main chord and the second main chord are connected via a web member (111), and a plurality of the wide arm connecting supports (130) are respectively arranged on the first main chord and the second main chord.

8. Double car wide arm, characterized in that: The double car wide arm include: The double-car widened boom section (D) according to claim 6 or 7; and A plurality of standard main boom sections (8) are used to be connected to the ends of the wide boom left bracket unit (10a) and the ends of the wide boom right bracket unit (10b) of the double-car widened boom section (D).

9. A crane, characterized in that The crane comprises a single-car wide boom according to claim 4 or 5 or a double-car wide boom according to claim 8 .

10. The crane according to claim 9, characterized in that The single-car wide boom according to claim 4 or 5 or the double-car wide boom according to claim 8 is used as the main boom of the crane.

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