Suspension arm bracket of crane and crane

Abstract

The utility model discloses a crane and a suspension arm bracket thereof, and relates to the technical field of cranes, the suspension arm bracket comprises a bracket main body and a limiting support assembly, the bracket main body comprises a stand column and a support table arranged at the top of the stand column, and a slide rail extending along a first horizontal direction is arranged on the support table; the number of the limiting supporting assemblies is two, and the two limiting supporting assemblies are distributed on the supporting table in the first horizontal direction in a spaced mode. Each limiting supporting assembly comprises a limiting plate, a supporting frame and an adjusting rod, the limiting plates are arranged on the supporting table, and the adjusting rods are arranged on the limiting plates in the first horizontal direction and connected with the supporting frames; the sliding rail is located between the two limiting plates, the two supporting frames are both in sliding connection with the sliding rail, and the adjusting rods can push the supporting frames to move on the sliding rail; and a limiting space for placing a suspension arm is formed between the two support frames. By adjusting the positions of the two supporting frames on the supporting table, the two supporting frames are both attached to the suspension arm, and a better supporting effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, and particularly relates to a boom bracket of a crane and a crane. Background Art

[0002] Currently, in the actual assembly process of truck cranes and other cranes, due to the excessive weight of the boom, the turntable lock pin of the crane cannot be accurately inserted into the lock pin seat. Currently, some solutions are to set a boom bracket on the crane to position and adjust the boom to complete the assembly. The boom bracket of the crane is installed on the frame behind the cab and is used to support the boom at the front end of the frame. Moreover, when the crane is on the road, the boom bracket can also stabilize the boom to prevent the boom from being misaligned due to vehicle bumps, thus facilitating transportation.

[0003] However, the existing boom bracket cannot be adjusted after being installed on the frame. Often, after the turntable lock pin of the crane is inserted into the lock pin seat, the boom does not fit well with the boom bracket, resulting in a poor supporting effect of the boom bracket on the boom. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a boom bracket of a crane and a crane, aiming to solve the problem that the boom does not fit well with the boom bracket, resulting in a poor supporting effect of the boom bracket on the boom.

[0005] To achieve the above purpose, the boom bracket of the crane proposed by the utility model includes:

[0006] A bracket main body, the bracket main body includes a column and a support platform arranged at the top of the column, and a slide rail extending along a first horizontal direction is arranged on the support platform;

[0007] A limit support assembly, the limit support assembly is set to be two, and the two limit support assemblies are spaced apart along the first horizontal direction on the support platform;

[0008] Each limit support assembly includes a limit plate, a support frame and an adjusting rod. The limit plate is arranged on the support platform, and the adjusting rod is arranged on the limit plate along the first horizontal direction and is connected with the support frame;

[0009] The slide rail is located between the two limit plates, and the two support frames are both slidably connected with the slide rail. The adjusting rod can push the support frame to move along the first horizontal direction on the slide rail; a limit space for placing the boom is formed between the two support frames, and the boom placed in the limit space is supported by the two support frames.

[0010] In one embodiment, the adjusting rod includes a limiting section and an adjusting section connected in sequence along the first horizontal direction, the limiting section is rotatably inserted into the limiting plate, the adjusting section is provided with a thread, and a screw hole is provided on the support frame, the adjusting section extends into the screw hole and cooperates with the screw hole thread; the limiting section is driven by rotating the adjusting section to push the support frame to move along the first horizontal direction on the slide rail.

[0011] In one embodiment, a nut is provided at one end of the limiting section away from the adjusting section, and the nut is located on a side of the limiting plate away from the supporting frame, and the limiting section is rotated by screwing the nut with a wrench.

[0012] In one embodiment, a through hole is provided on the limit plate, a bearing is provided on the side of the limit plate away from the support frame and corresponding to the position of the through hole, and the limit section is passed through the bearing and the through hole so that the limit section can rotate relative to the limit plate.

[0013] In one embodiment, the support frame includes a sliding side, a limiting side and a supporting side, the sliding side is slidably connected to the slide rail and is also in sliding contact with the support platform, the limiting side is provided with the screw hole, and the boom placed in the limiting space is supported on the supporting side.

[0014] In one embodiment, two slide rails are provided, and the two slide rails are spaced apart along the second horizontal direction, wherein the first horizontal direction is perpendicular to the second horizontal direction; the sliding side is provided with two slide grooves which are slidably matched with the two slide rails, and the screw hole is located between the two slide grooves.

[0015] In one embodiment, each of the support sides is arranged to be inclined relative to the support platform, so that the size of the limiting space along the first horizontal direction is gradually reduced from top to bottom.

[0016] In one embodiment, a shock absorbing pad is arranged on each of the supporting sides.

[0017] In one embodiment, a limiting bolt is further provided on the limiting plate, and the limiting bolt is provided along the first horizontal direction, the limiting bolt passes through the limiting plate and is threadedly engaged with the limiting plate, and the bolt head of the limiting bolt is located on the side of the limiting plate away from the support frame; the bolt head is rotated so that the end of the limiting bolt away from the bolt head moves along the first horizontal direction and abuts against the side of the support frame toward the limiting plate.

[0018] The utility model also provides a crane, which is applied with the boom bracket of the crane as described above.

[0019] The technical solution of the present utility model is to provide two limiting plates and two support frames on the support table. Both support frames are located between the two limiting plates. A slide rail is arranged between the two limiting plates, and the support frames are slidably connected to the slide rail so that the support frames can move between the two limiting plates. A limiting space is formed between the two support frames. The size and position of the limiting space can be adjusted by moving the support frames. The boom placed in the limiting space is supported on the two support frames. When the two support frames do not fit the boom located in the limiting space, the support frames are moved on the slide rail by the adjusting rod so that both support frames fit the boom to achieve a better support effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0021] Figure 1 FIG. is a schematic structural diagram of an embodiment of the boom support of the crane provided by the present utility model;

[0022] Figure 2 FIG. is a schematic structural diagram of placing the boom of an embodiment of the boom support of the crane provided by the present utility model.

[0023] Explanation of the reference numerals in the drawings:

[0024] 100, boom bracket; 1, bracket main body; 10, column; 11, support table; 12, slide rail; 2, limit support assembly; 20, limit plate; 201, bearing; 21, support frame; 210, limit side; 211, sliding side; 212, support side; 2121, chute; 22, adjusting rod; 221, limit section; 222, adjusting section; 223, nut; 23, screw hole; 24, limit space; 25, limit bolt; 251, bolt head; 26, reinforcing plate; 3, shock pad;

[0025] 200, boom.

[0026] The realization of the purpose, functional features and advantages of the present utility model will be further described in conjunction with the embodiments and with reference to the drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0028] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0030] Currently, during the actual assembly process of cranes such as truck cranes, the turntable lock pin of the crane cannot be accurately inserted into the lock pin seat because the boom is too heavy. Currently, some solutions are to set a boom bracket on the crane to position and adjust the boom to complete the assembly. The crane boom bracket is installed on the frame behind the cab and is used to support the boom at the front end of the vehicle. Moreover, the boom bracket can also stabilize the boom when the crane is on the road, preventing the boom from being displaced due to vehicle bumps, thus facilitating transportation.

[0031] However, the existing boom brackets cannot be adjusted after being installed on the frame. Often, after the turntable lock pin of the crane is inserted into the lock pin seat, the boom does not fit well with the boom bracket, resulting in a poor supporting effect of the boom bracket on the boom.

[0032] The present utility model proposes a boom bracket 100 for a crane.

[0033] Please refer to Figure 1 - Figure 2, in an embodiment of the present utility model, the boom bracket 100 of the crane includes a bracket main body 1 and a limit support assembly 2. The bracket main body 1 includes a column 10 and a support platform 11 arranged at the top of the column 10. A slide rail 12 extending in the first horizontal direction is arranged on the support platform 11. The limit support assembly 2 is provided with two, and the two limit support assemblies 2 are spaced apart in the first horizontal direction on the support platform 11; each limit support assembly 2 includes a limit plate 20, a support frame 21 and an adjustment rod 22. The limit plate 20 is arranged on the support platform 11, and the adjustment rod 22 is arranged on the limit plate 20 in the first horizontal direction and is connected to the support frame 21; the slide rail 12 is located between the two limit plates 20, and the two support frames 21 are both slidably connected to the slide rail 12, and the adjustment rod 22 can push the support frame 21 to move in the first horizontal direction on the slide rail 12; a limit space 24 for placing the boom 200 is formed between the two support frames 21, and the boom 200 placed in the limit space 24 is supported by the two support frames 21.

[0034] Specifically, in this embodiment, the first horizontal direction is the same as the extending direction of the support platform 11, and the first horizontal direction is, for example, Figure 2 the x direction in

[0035] The technical solution of the present utility model adopts two limit plates 20 and two support frames 21 arranged on the support platform 11. The two support frames 21 are both located between the two limit plates 20. A slide rail 12 is arranged between the two limit plates 20. The support frame 21 is slidably connected to the slide rail 12 so that the support frame 21 can move between the two limit plates 20. A limit space 24 is formed between the two support frames 21. By moving the support frame 21, the size and position of the limit space 24 can be adjusted; the boom 200 placed in the limit space 24 is supported by the two support frames 21. When the two support frames 21 do not fit the boom 200 located in the limit space 24, the adjustment rod 22 is used to move the support frame 21 on the slide rail 12 so that the two support frames 21 both fit the boom 200 to achieve a better support effect.

[0036] In an embodiment, the adjustment rod 22 includes a limit section 221 and an adjustment section 222 connected in sequence along the first horizontal direction. The limit section 221 is rotatably passed through the limit plate 20, the adjustment section 222 is provided with a thread, a threaded hole 23 is arranged on the support frame 21, and the adjustment section 222 extends into the threaded hole 23 and is in threaded cooperation with the threaded hole 23. By rotating the limit section 221, the support frame 21 is pushed to move in the first horizontal direction on the slide rail 12.

[0037] It can be understood that the adjusting rod 22 is rotatably connected to the limit plate 20, and the adjusting section 222 of the adjusting rod 22 is provided with a thread, which extends into the screw hole 23 of the support frame 21 and cooperates with the thread of the support frame 21. When the adjusting rod 22 is rotated, the positions of the adjusting rod 22 and the support frame 21 change relatively. Since the adjusting rod 22 is set on the limit plate 20 and the position along the first horizontal direction remains relatively unchanged, the support frame 21 slides on the slide rail 12; and since it is a threaded connection, the adjusting rod 22 has a certain fixing and limiting effect in the first horizontal direction when the adjusting rod 22 is not rotated. Therefore, when the boom 200 is placed on the support frame 21, the adjusting rod 22 can also be used to limit the movement of the support frame 21 in the first horizontal direction, and the structure is simple and more stable.

[0038] In one embodiment, a nut 223 is provided at one end of the limiting section 221 away from the adjusting section 222 . The nut 223 is located on a side of the limiting plate 20 away from the supporting frame 21 . The limiting section 221 is rotated by screwing the nut 223 with a wrench.

[0039] It can be understood that by providing a nut 223 on the limiting section 221, and the nut 223 is located on the side of the limiting plate 20 away from the support frame 21, when the position of the support frame 21 needs to be adjusted, it is only necessary to use a wrench and the nut 223 to turn the nut 223 to rotate the limiting section 221.

[0040] In one embodiment, the adjustment section 222 may be a screw rod in the prior art, or the entire adjustment rod 22 may be a bolt in the prior art.

[0041] In one embodiment, a through hole is opened on the limiting plate 20, and a bearing 201 is provided on the side of the limiting plate 20 away from the support frame 21 and at a position corresponding to the through hole. The limiting section 221 is penetrated by the bearing 201 and the through hole so that the limiting section 221 can rotate relative to the limiting plate 20.

[0042] It can be understood that the limiting section 221 is rotatably connected to the bearing 201 set on the limiting plate 20, and the limiting section 221 can be more easily rotated through the bearing 201. In addition, since the bearing 201 is positioned corresponding to the through hole, the bearing 201 can also prevent the limiting section 221 from shaking up and down.

[0043] In another embodiment, the bearing 201 may also be disposed in the through hole of the limiting plate 20 , and the limiting section 221 is directly rotatably connected to the limiting plate 20 via the bearing 201 .

[0044] In one embodiment, the support frame 21 includes a sliding side 211, a limiting side 210, and a supporting side 212. The sliding side 211 is slidably connected to the slide rail 12 and the sliding side 211 is also in sliding contact with the support platform 11. The limiting side 210 is provided with a threaded hole 23, and the boom 200 placed in the limiting space 24 is supported by the supporting side 212.

[0045] Understandably, the sliding side 211 is the side of the support frame 21 facing the support platform 11, which is slidably connected to the slide rail 12 and is also in sliding contact with the support platform 11. After the support frame 21 bears the boom 200, the pressure exerted by the boom 200 on the support frame 21 is dispersed to the slide rail 12 and the support platform 11, with a more reasonable force and a more solid structure. The limiting side 210 is the side of the support frame 21 facing the limiting plate 20. The limiting side 210 is provided with a threaded hole 23, and the adjusting rod 22 enters the threaded hole 23 from the limiting side 210 and is in threaded engagement with the threaded hole 23. Among them, the limiting side 210 can be moved with the support frame 21 to abut against the limiting plate 20. The supporting side 212 is the side of the support frame 21 facing the limiting space 24, and the supporting side 212 is used to support the boom 200.

[0046] In a specific embodiment, the support frame 21 is a solid structure, which is more robust and has better load-bearing capacity.

[0047] In one embodiment, there are two slide rails 12, and the two slide rails 12 are arranged at intervals along the second horizontal direction, wherein the first horizontal direction is perpendicular to the second horizontal direction; the sliding side 211 is provided with two sliding grooves 2121 that are slidably engaged with the two slide rails 12 one by one, and the threaded hole 23 is located between the two sliding grooves 2121.

[0048] Understandably, there are two slide rails 12 arranged along the first horizontal direction, and the two slide rails 12 are arranged at intervals along the second horizontal direction, wherein the second horizontal direction is perpendicular to the first horizontal direction. By providing two slide rails 12, the support frame 21 is more stable on the support platform 11, and the two slide rails 12 can further enhance the load-bearing capacity of the support frame 21 while maintaining balance. In addition, by arranging the threaded hole 23 between the two sliding grooves 2121, it is more smooth for the adjusting member to push the support frame 21 to move. Preferably, the threaded hole 23 is arranged at the central position between the two slide rails 12.

[0049] In one embodiment, each supporting side 212 is inclined relative to the support platform 11, so that the dimension of the limiting space 24 along the first horizontal direction is tapered from top to bottom.

[0050] Understandably, the tapered setting can be understood as that the dimension of the limiting space 24 along the first horizontal direction becomes smaller and smaller as it gets closer to the support platform 11. When placing the boom 200, the boom 200 can more easily enter the limiting space 24.

[0051] In one embodiment, a shock absorbing pad 3 is provided on each supporting side 212. When the boom 200 is placed in the limiting space 24, it contacts the shock absorbing pad 3 on the supporting side 212, and the shock absorbing pad 3 is used to abut against the boom 200 to avoid damage to the boom 200, and also reduce the impact force caused by the boom 200 to the support frame 21 when the boom 200 is placed.

[0052] The shock-absorbing pad 3 may be made of various materials, such as nylon, rubber or silicone.

[0053] In one embodiment, a limiting bolt 25 is further provided on the limiting plate 20, and the limiting bolt 25 is arranged along the first horizontal direction. The limiting bolt 25 passes through the limiting plate 20 and is threadedly engaged with the limiting plate 20, and the bolt head 251 of the limiting bolt 25 is located on the side of the limiting plate 20 away from the support frame 21. The bolt head 251 is rotated to move the end of the limiting bolt 25 away from the bolt head 251 along the first horizontal direction and abut against the side of the support frame 21 toward the limiting plate 20.

[0054] It can be understood that after adjusting the support frame 21 through the adjusting piece, the limiting bolt 25 set on the limiting plate 20 is rotated to make its end abut against the support frame 21. The bolt head 251 is located on the side of the limiting plate 20 away from the support frame 21 for easier screwing. When the boom 200 is placed on the support frame 21, the inclined support side 212 directs part of the force toward the limiting plate 20 and part of the force toward the support platform 11. The limiting bolt 25 abuts against the support frame 21 to achieve the purpose of limiting the movement of the support frame 21 in the first horizontal direction.

[0055] And because the limit bolt 25 is threadedly connected to the limit plate 20, it has a certain fixing and limiting effect in the first horizontal direction when the limit bolt 25 is not rotated. Therefore, when the boom 200 is placed on the support frame 21, the adjusting rod 22 can be used to limit the movement of the support frame 21 in the first horizontal direction after abutting against the support frame 21, and the structure is simple and more stable.

[0056] In one embodiment, a reinforcing plate 26 is further disposed on the support platform 11 . The reinforcing plate 26 is located on a side of the limiting plate 20 away from the supporting frame 21 and is also connected to the limiting plate 20 .

[0057] It can be understood that the reinforcing plate 26 is used to stabilize the limiting plate 20 . The reinforcing plate 26 is in a right-angled triangle structure. The two right-angled sides of the reinforcing plate 26 are respectively connected to the support platform 11 and the limiting plate 20 , so as to further enhance the stability of the limiting plate 20 .

[0058] Furthermore, a plurality of reinforcing plates 26 are provided, and the adjusting rod 22 is located between the reinforcing plates 26, so that the force is more reasonable.

[0059] Specifically, two columns 10 are provided. The two columns 10 respectively support the positions of the bottom surface of the support platform 11, and the two columns 10 are spaced apart to support the support platform 11.

[0060] In an embodiment, the bracket body 1 may further be provided with a sealing plate. The top of the sealing plate is connected to the support platform 11. The two sides of the sealing plate along the first horizontal direction are respectively connected to the two columns 10, and the bottom of the sealing plate is recessed in the direction of the support platform 11.

[0061] It can be understood that the sealing plate is used to make the structure of the entire bracket body 1 more stable, and enable the support platform 11 to bear the boom 200 with greater gravity. Moreover, the bottom of the sealing plate is recessed in the direction of the support platform 11, that is, it can be immediately understood that the sealing plate is arched upward, which can effectively improve the load-bearing capacity of the entire bracket body 1.

[0062] The present utility model also provides a crane, which includes the aforementioned boom bracket 100. The specific structure of this crane refers to the above embodiments. Since this crane adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated herein one by one.

[0063] Among them, the crane includes a vehicle frame, and the boom bracket 100 is arranged on the vehicle frame for placing the boom 200 of the crane.

[0064] The above is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A boom bracket of a crane, characterized in that: The boom bracket (100) comprises: A bracket body (1), the bracket body (1) comprising a column (10) and a support platform (11) arranged on the top of the column (10), and a slide rail (12) extending along a first horizontal direction is arranged on the support platform (11); A position limiting support assembly (2), wherein two position limiting support assemblies (2) are provided, and the two position limiting support assemblies (2) are spaced apart and distributed on the support platform (11) along the first horizontal direction; Each of the position-limiting support assemblies (2) comprises a position-limiting plate (20), a support frame (21) and an adjusting rod (22); the position-limiting plate (20) is arranged on the support platform (11); and the adjusting rod (22) is arranged on the position-limiting plate (20) along a first horizontal direction and is connected to the support frame (21); The slide rail (12) is located between the two limiting plates (20); the two support frames (21) are both slidably connected to the slide rail (12); the adjustment rod (22) can push the support frame (21) to move along the first horizontal direction on the slide rail (12); a limiting space (24) for placing the boom (200) is formed between the two support frames (21), and the boom (200) placed in the limiting space (24) is supported by the two support frames (21).

2. The boom bracket of a crane according to claim 1, characterized in that: The adjusting rod (22) comprises a limiting section (221) and an adjusting section (222) connected in sequence along the first horizontal direction; the limiting section (221) is rotatably arranged on the limiting plate (20); the adjusting section (222) is provided with a thread; a screw hole (23) is provided on the support frame (21); the adjusting section (222) extends into the screw hole (23) and is threadedly engaged with the screw hole (23); the limiting section (221) is rotated to drive the adjusting section (222) to push the support frame (21) to move along the first horizontal direction on the slide rail (12).

3. The boom bracket of a crane according to claim 2, characterized in that: A nut (223) is provided at one end of the limiting section (221) away from the adjusting section (222); the nut (223) is located on a side of the limiting plate (20) away from the supporting frame (21); the limiting section (221) is rotated by screwing the nut (223) with a wrench.

4. The boom bracket of a crane according to claim 3, characterized in that: A through hole is provided on the limiting plate (20); a bearing (201) is provided on a side of the limiting plate (20) away from the support frame (21) and at a position corresponding to the through hole; the limiting section (221) is passed through the bearing (201) and the through hole so that the limiting section (221) can rotate relative to the limiting plate (20).

5. The boom bracket of a crane according to claim 2, characterized in that: The support frame (21) comprises a sliding side (211), a limiting side (210) and a supporting side (212); the sliding side (211) is slidably connected to the slide rail (12) and the sliding side (211) is also in sliding contact with the support platform (11); the limiting side (210) is provided with the screw hole (23); the boom (200) placed in the limiting space (24) is supported on the supporting side (212).

6. The boom bracket of a crane according to claim 5, characterized in that: Two slide rails (12) are provided, and the two slide rails (12) are arranged at intervals along a second horizontal direction, wherein the first horizontal direction is perpendicular to the second horizontal direction; The sliding side (211) is provided with two sliding grooves (2121) which are slidably matched with the two sliding rails (12) one by one, and the screw hole (23) is located between the two sliding grooves (2121).

7. The boom bracket of a crane according to claim 5, characterized in that: Each of the supporting sides (212) is arranged to be inclined relative to the supporting platform (11), so that the size of the limiting space (24) along the first horizontal direction is gradually reduced from top to bottom.

8. The boom bracket of a crane according to claim 5, characterized in that: A shock-absorbing pad (3) is provided on each of the supporting sides (212).

9. The boom bracket of a crane according to any one of claims 1 to 8, characterized in that: A limiting bolt (25) is also provided on the limiting plate (20), and the limiting bolt (25) is provided along the first horizontal direction, the limiting bolt (25) is passed through the limiting plate (20) and is threadedly engaged with the limiting plate (20), and the bolt head (251) of the limiting bolt (25) is located on the side of the limiting plate (20) away from the support frame (21); by rotating the bolt head (251), the end of the limiting bolt (25) away from the bolt head (251) moves along the first horizontal direction and abuts against the side of the support frame (21) facing the limiting plate (20).

10. A crane, characterized in that: A boom bracket (100) for a crane according to any one of claims 1 to 9 is used.

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