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; 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 and supporting assembly comprises a limiting plate and a supporting frame, the limiting plates and the supporting frames are arranged on the supporting table, and adjusting pieces are arranged on the limiting plates; the two supporting frames are located between the two limiting plates, and a limiting space used for containing a suspension arm is formed between the two supporting frames. In each limiting supporting assembly, the supporting frame can move on the supporting table in the first horizontal direction, and the adjusting piece can move relative to the limiting plate so as to abut against the supporting frame. According to the technical scheme, the two supporting frames are attached to the suspension arm by adjusting the positions of the two supporting frames on the supporting table, and therefore the supporting effect is better.

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] At present, in the actual assembly process of cranes such as truck 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, a solution is 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 driving on the road, the boom bracket can also stabilize the boom to prevent the boom from being displaced 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 poor support effect of the boom bracket on the boom. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose 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 poor support effect of the boom bracket on the boom.

[0005] To achieve the above purpose, a boom bracket of a crane proposed by the utility model is characterized in that the boom bracket includes:

[0006] A bracket main body, which includes a column and a support platform arranged at the top of the column;

[0007] A limit support assembly, which is set to be two, and the two limit support assemblies are distributed at intervals along a first horizontal direction on the support platform; each limit support assembly includes a limit plate and a support frame, both the limit plate and the support frame are arranged on the support platform, and an adjusting member is arranged on the limit plate;

[0008] The two support frames are located between the two limit plates, and 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;

[0009] In each limit support assembly, the support frame can move on the support platform in the first horizontal direction, and the adjusting member can move relative to the limit plate in the first horizontal direction to abut against one side of the support frame facing the limit plate.

[0010] In one embodiment, one of the support platform and the support frame is provided with a sliding hole extending along a first horizontal direction, and the other is provided with a first locking column, the first locking column is passed through the sliding hole and slidably cooperates with the sliding hole, and the first locking column can lock the support frame to the support platform or unlock it from the support platform.

[0011] In one embodiment, the support frame has a first limiting side, a second limiting side and a supporting side, the first limiting side is used to abut against the adjusting member, the second limiting side is supported on the supporting platform and can slide in contact with the supporting platform, and the first locking column is passed through the second limiting side; the boom placed in the limiting space is supported on the two supporting sides.

[0012] 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.

[0013] In one embodiment, a shock absorbing pad is arranged on each of the supporting sides.

[0014] In one embodiment, the support frame includes a first support plate, a second support plate and a third support plate, the second support plate is arranged along the first horizontal direction and supported on the support platform, and the first locking column can lock the second support plate to the support platform or unlock it from the support platform; the two ends of the second support plate along the first horizontal direction are respectively connected to the first support plate and the third support plate, and an end of the third support plate away from the second support plate is supported on an end of the first support plate away from the second support plate, so that the first support plate, the second support plate and the third support plate form a cavity, and a reinforcing rib connecting the first support plate, the second support plate and the third support plate is provided in the cavity; the position on the first support plate corresponding to the reinforcing rib is used to abut against the adjusting member.

[0015] In one embodiment, the support frame is further locked to the limit plate or unlocked from the limit plate by a second locking column.

[0016] In one embodiment, the adjusting member is an adjusting bolt arranged along the first horizontal direction, a screw hole is opened on the limiting plate, the screw rod of the adjusting bolt is threadedly engaged with the screw hole, so that the end of the screw rod abuts against the side of the support frame facing the limiting plate, and the nut of the adjusting bolt is located on the side of the limiting plate away from the support frame.

[0017] In one embodiment, two columns are provided. The bracket body further includes a sealing plate. The top of the sealing plate is connected to the support platform. The two sides of the sealing plate along the first horizontal direction are respectively connected to the two columns, and the bottom of the sealing plate is recessed toward the support platform.

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

[0019] The technical solution of the present utility model is that two limiting plates and two support frames are provided on the support platform. The two support frames are both located between the two limiting plates and can move between the two limiting plates. A limiting space is formed between the two 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, the positions of the two support frames on the support platform are adjusted so that the two support frames both fit the boom. After adjusting the support frames, the adjusting member arranged on the limiting plate is moved to abut against the support frame, thereby further limiting and fixing the support frame to keep the support frame in a fitting state with the boom, so as 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 It is a schematic structural diagram of an embodiment of the boom bracket of the crane provided by the present utility model;

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

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

[0024] 100, boom bracket; 1, bracket body; 10, column; 11, support platform; 110, sliding hole; 12, sealing plate; 2, limiting support assembly; 20, limiting plate; 21, support frame; 210, first support plate; 2100, first limiting side; 211, second support plate; 2110, second limiting side; 2111, first locking column; 212, third support plate; 2120, support side; 213, cavity; 214, reinforcing rib; 22, adjusting member; 22a, adjusting bolt; 220, nut; 221, screw rod; 23, limiting space; 24, second locking column; 25, 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 with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0027] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to 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 shall fall within the protection scope 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 position 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 where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. 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 protection scope 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 due to the excessive weight of the boom. Currently, a solution is 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 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 bracket cannot be adjusted after being installed on the frame, and often there is a situation where the boom does not fit well with the boom bracket after the turntable lock pin of the crane is inserted into the lock pin seat.

[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 provided at the top of the column 10; the limit support assembly 2 is provided in two, and the two limit support assemblies 2 are spaced apart along a first horizontal direction on the support platform 11; each limit support assembly 2 includes a limit plate 20 and a support frame 21. The limit plate 20 and the support frame 21 are both provided on the support platform 11, and an adjusting member 22 is provided on the limit plate 20; the two support frames 21 are located between the two limit plates 20, and a limit space 23 for placing the boom 200 is formed between the two support frames 21, and the boom 200 placed in the limit space 23 is supported by the two support frames 21; in each limit support assembly 2, the support frame 21 can move on the support platform 11 in the first horizontal direction, and the adjusting member 22 can move relative to the limit plate 20 in the first horizontal direction to abut against one side of the support frame 21 facing the limit plate 20.

[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 is to provide two limit plates 20 and two support frames 21 on the support platform 11. The two support frames 21 are both located between the two limit plates 20 and can move between the two limit plates 20. A limit space 23 is formed between the two support frames 21. By moving the support frames 21, the size and position of the limit space 23 can be adjusted. The boom 200 placed in the limit space 23 is supported by the two support frames 21. When the two support frames 21 do not fit the boom 200, the positions of the two support frames 21 on the support platform 11 are adjusted so that the two support frames 21 both fit the boom 200. After adjusting the support frames 21, the adjusting member 22 provided on the limit plate 20 is moved to abut against the support frame 21, thereby further limiting and fixing the support frame to keep the support frame in a fitting state with the boom, so as to achieve a better support effect.

[0036] Furthermore, one of the support platform 11 and the support frame 21 is provided with a sliding hole 110 extending in the first horizontal direction, and the other is provided with a first locking column 2111. The first locking column 2111 passes through the sliding hole 110 and is in sliding fit with the sliding hole 110, and the first locking column 2111 can lock the support frame 21 to the support platform 11 or unlock it from the support platform 11.

[0037] Understandably, by arranging the first locking post 2111 to pass through the sliding hole 110 and be in sliding fit with the sliding hole 110, the support frame 21 can move relative to the support table 11. After moving the support frame 21, the support frame 21 can also be locked to the support table 11 through the first locking post 2111. When it is necessary to move again, after unlocking the first locking post 2111, the support frame 21 can be continuously moved. The structure is simple and it is convenient to adjust the position of the support frame 21.

[0038] In one implementation, a sliding hole 110 is arranged on the support table 11, and a first locking post 2111 is arranged on the support frame 21. The first locking post 2111 can be a bolt in threaded fit with the support frame 21. After passing through the sliding hole 110, the first locking post 2111 is connected to the support frame 21. The first locking post 2111 moves with the movement of the support frame 21. By screwing the first locking post 2111 in the clockwise or counterclockwise direction, the support frame 21 is locked to the support table 11 or unlocked, which is convenient for operation.

[0039] In another implementation, a sliding hole 110 is arranged on the support frame 21, and a first locking post 2111 is arranged on the support table 11. The first locking post 2111 is arranged at a fixed position on the support table 11. The first locking post 2111 can be a bolt in threaded fit with the support frame 21. After passing through the sliding hole 110, the first locking post 2111 is in threaded fit with the support table 11. When the support frame 21 is moved, the first locking post 2111 moves in the sliding hole 110 of the support frame 21. Specifically, a nut can be threadedly connected to the first locking post 2111, and the nut is located at the bottom surface of the support table 11. By screwing the nut in the clockwise or counterclockwise direction, the first locking post 2111 locks the support frame 21 to the support table 11 or unlocks it.

[0040] In an embodiment, the support frame 21 has a first limiting side 2100, a second limiting side 2110, and a supporting side 2120. The first limiting side 2100 is used to abut against the adjusting member 22. The second limiting side 2110 is supported on the support table 11 and can be in sliding contact fit with the support table 11. The first locking post 2111 passes through the second limiting side 2110; the boom 200 placed in the limiting space 23 is supported on the two supporting sides 2120.

[0041] Understandably, the first limiting side 2100 is the side of the support frame 21 close to the limiting plate 20. The second limiting side 2110 is in sliding contact with the support table 11. The second limiting side 2110 is in sliding contact with the tabletop of the support table 11. The first locking post 2111 passes through the second limiting side 2110 to lock the support frame 21 to the support table 11 or unlock it from the support table 11. The supporting side 2120 is the side of the support frame 21 close to the limiting space 23. The support frame 21 is fixed from its first limiting side 2100 and second limiting side 2110, making the support frame 21 more firm and capable of supporting the boom 200 more stably.

[0042] In one embodiment, the limiting plate 20 is vertically disposed on the tabletop of the support table 11. The first limiting side 2100 of the support frame 21 is parallel to the limiting plate 20. When the support frame 21 moves towards the limiting plate 20, its first limiting side 2100 can directly abut against the limiting plate 20, thereby achieving the limiting effect.

[0043] In one embodiment, the second limiting side 2110 of the support frame 21 and the tabletop of the support table 11 are flat surfaces, making the sliding smoother.

[0044] Furthermore, each support side 2120 is inclined relative to the support table 11, so that the dimension of the limiting space 23 in the first horizontal direction gradually decreases from top to bottom.

[0045] It can be understood that the gradually decreasing setting can be understood as that the dimension of the limiting space 23 in the first horizontal direction is smaller closer to the support table 11. When placing the boom 200, the boom 200 can more easily enter the limiting space 23.

[0046] In one embodiment, a shock-absorbing pad 3 is provided on each support side 2120. When placing the boom 200 into the limiting space 23, it first contacts the shock-absorbing pad 3 on the support side 2120. The shock-absorbing pad 3 is used to abut against the boom 200 to avoid damaging the boom 200 and also reduce the impact force on the support frame 21 when the boom 200 is placed.

[0047] Among them, the material of the shock-absorbing pad 3 can be various, such as nylon, rubber or silica gel, etc.

[0048] In one embodiment, the support frame 21 includes a first support plate 210, a second support plate 211 and a third support plate 212. The second support plate 211 is disposed along the first horizontal direction and supported on the support table 11, and the first locking column 2111 can lock the second support plate 211 to the support table 11 or unlock it from the support table 11; both ends of the second support plate 211 along the first horizontal direction are respectively connected to the first support plate 210 and the third support plate 212. One end of the third support plate 212 away from the second support plate 211 is supported on one end of the first support plate 210 away from the second support plate 211, so that the first support plate 210, the second support plate 211 and the third support plate 212 enclose a cavity 213. A reinforcing rib 214 connecting the first support plate 210, the second support plate 211 and the third support plate 212 is provided in the cavity 213; the position on the first support plate 210 corresponding to the reinforcing rib 214 is used to abut against the adjusting member 22.

[0049] Specifically, in the present embodiment, the support frame 21 is formed by connecting a first support plate 210, a second support plate 211 and a third support plate 212, wherein the first support plate 210, the second support plate 211 and the third support plate 212 can be integrally formed, a first limiting side 2100 is formed on the first support plate 210, a second limiting side 2110 is formed on the second support plate 211, and a supporting side 2120 is formed on the third support plate 212. When the boom 200 is supported on the third support plate 212, since one end of the third limiting plate 20 away from the second support plate 211 is supported on one end of the first support plate 210 away from the second support plate 211, the stability of the structure of the support frame 21 is maintained; and a reinforcing rib 214 is provided in the cavity 213 of the support frame 21, so as to further stabilize the support frame 21. In addition, the position of the first support plate 210 corresponding to the reinforcing rib 214 is used to abut against the adjusting member 22, so that the first support plate 210 is not easily deformed due to the abutment of the adjusting member 22. The support frame 21 has a simple structure and low cost, and meets actual force requirements.

[0050] In one embodiment, the support frame 21 may also be a solid structure, which is more solid and has better load-bearing capacity.

[0051] Furthermore, the support frame 21 is also locked to the limiting plate 20 or unlocked from the limiting plate 20 through the second locking column 24 .

[0052] In one embodiment, the second locking column 24 can be a bolt, and a threaded hole is correspondingly provided on the support frame 21. The second locking column 24 is passed through the limiting plate 20 and is threadedly connected to the threaded hole on the support frame 21, so as to lock the support frame 21 to the limiting plate 20, thereby further enhancing the firmness of the support frame 21.

[0053] Furthermore, a reinforcing plate 25 is also provided on the support platform 11 . The reinforcing plate 25 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 .

[0054] In one embodiment, the reinforcing plate 25 is used to stabilize the limiting plate 20 . The reinforcing plate 25 is in a right-angled triangle structure. Two right-angled sides of the reinforcing plate 25 are respectively connected to the support platform 11 and the limiting plate 20 , further enhancing the stability of the limiting plate 20 .

[0055] In one embodiment, a plurality of reinforcing plates 25 are provided, and the adjusting member 22 is located between the reinforcing plates 25 to make the force more reasonable.

[0056] Furthermore, the adjusting member 22 is an adjusting bolt 22a arranged in the first horizontal direction, and a screw hole is opened on the limit plate 20. The screw rod 221 of the adjusting bolt 22a is threadedly matched with the screw hole, so that the end of the screw rod 221 of the adjusting bolt 22a abuts against the side of the support frame 21 toward the limit plate 20, and the nut 220 of the adjusting bolt 22a is located on the side of the limit plate 20 away from the support frame 21.

[0057] It can be understood that the adjusting member 22 is an adjusting bolt 22a, and a screw hole is provided on the limit plate 20. By turning the nut 220, the adjusting member 22 is moved on the limit plate 20 toward the first horizontal direction, so that it can abut against the support frame 21. When the adjusting member 22 is threadedly connected, it remains stationary in the first horizontal direction when it does not rotate. When it stops rotating, the thread on the adjusting member 22 fixes it relative to the limit plate 20 in the first horizontal direction. The structure is simple and easy to operate. When the boom 200 is placed on the support frame 21, the inclined support side 2120 directs part of the force toward the limit plate 20 and part of the force toward the support platform 11, and the limit bolt 22a abuts against the support frame 21 to achieve the purpose of limiting the movement of the support frame 21 in the first horizontal direction.

[0058] Furthermore, in order to prevent the end of the adjusting member 22 from sliding after abutting against the support frame 21, a blind hole may be provided on the first limiting side 2100 of the support frame 21 so that the end of the screw rod 221 enters the blind hole to prevent sliding.

[0059] In one embodiment, two columns 10 are provided, and the bracket body 1 also includes a sealing plate 12, the top of the sealing plate 12 is connected to the support platform 11, the sealing plate 12 is respectively connected to the two columns 10 on both sides along the first horizontal direction, and the bottom of the sealing plate 12 is recessed toward the support platform 11.

[0060] It can be understood that the sealing plate 12 is used to make the structure of the entire bracket body 1 more stable and enable the support platform 11 to withstand the boom 200 with greater gravity, and the bottom of the sealing plate 12 is recessed toward the support platform 11, which can effectively improve the rigidity and load-bearing capacity of the entire bracket body 1.

[0061] The utility model also proposes a crane, which includes the aforementioned boom bracket 100. The specific structure of the crane refers to the above-mentioned embodiment. Since the crane adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0062] It can be understood that the crane includes a frame, and the boom bracket 100 is arranged on the frame for placing the boom 200 of the crane.

[0063] The above are only exemplary embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. 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 any direct / indirect application 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); 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 a first horizontal direction; each position limiting support assembly (2) comprises a position limiting plate (20) and a support frame (21), and the position limiting plate (20) and the support frame (21) are both provided on the support platform (11), and an adjusting member (22) is provided on the position limiting plate (20); The two support frames (21) are located between the two limiting plates (20), a limiting space (23) for placing the boom (200) is formed between the two support frames (21), and the boom (200) placed in the limiting space (23) is supported by the two support frames (21); In each of the position-limiting support assemblies (2), the support frame (21) can move on the support platform (11) toward a first horizontal direction, and the adjustment member (22) can move relative to the position-limiting plate (20) toward the first horizontal direction to abut against a side of the support frame (21) facing the position-limiting plate (20).

2. The boom bracket of a crane according to claim 1, characterized in that: One of the support platform (11) and the support frame (21) is provided with a sliding hole (110) extending along a first horizontal direction, and the other is provided with a first locking column (2111), the first locking column (2111) is passed through the sliding hole (110) and slidably cooperates with the sliding hole (110), and the first locking column (2111) can lock the support frame (21) to the support platform (11) or unlock it from the support platform (11).

3. The boom bracket of a crane according to claim 2, characterized in that: The support frame (21) has a first limiting side (2100), a second limiting side (2110) and a supporting side (2120), the first limiting side (2100) is used to abut against the adjusting member (22), the second limiting side (2110) is supported on the supporting platform (11) and can be slidably contacted with the supporting platform (11), and the first locking column (2111) is passed through the second limiting side (2110); the boom (200) placed in the limiting space (23) is supported on the two supporting sides (2120).

4. The boom bracket of a crane according to claim 3, characterized in that: Each of the supporting sides (2120) is arranged to be inclined relative to the supporting platform (11), so that the size of the limiting space (23) along the first horizontal direction is gradually reduced from top to bottom.

5. The boom bracket of a crane according to claim 3, characterized in that: A shock-absorbing pad (3) is provided on each of the supporting sides (2120).

6. The boom bracket of a crane according to claim 2, characterized in that: The support frame (21) comprises a first support plate (210), a second support plate (211) and a third support plate (212); the second support plate (211) is arranged along the first horizontal direction and supported on the support platform (11), and the first locking column (2111) can lock the second support plate (211) to the support platform (11) or unlock it from the support platform (11); the two ends of the second support plate (211) along the first horizontal direction are respectively connected to the first support plate (210) and the third support plate (212), and the third support plate (212) is away from the support platform (11). One end of the second support plate (211) is supported on one end of the first support plate (210) away from the second support plate (211), so that the first support plate (210), the second support plate (211) and the third support plate (212) surround a cavity (213), and a reinforcing rib (214) connecting the first support plate (210), the second support plate (211) and the third support plate (212) is provided in the cavity (213); a position on the first support plate (210) corresponding to the reinforcing rib (214) is used to abut against the adjusting member (22).

7. The boom bracket of a crane according to claim 6, characterized in that: The support frame (21) is also locked to the limiting plate (20) or unlocked from the limiting plate (20) via a second locking column (24).

8. The boom bracket of a crane according to any one of claims 1 to 7, characterized in that: The adjusting member (22) is an adjusting bolt (22a) arranged along the first horizontal direction, and a screw hole is provided on the limiting plate (20). The screw rod (221) of the adjusting bolt (22a) is threadedly matched with the screw hole, so that the end of the screw rod (221) abuts against the side of the support frame (21) facing the limiting plate (20), and the nut (220) of the adjusting bolt (22a) is located on the side of the limiting plate (20) away from the support frame (21).

9. The boom bracket of a crane according to any one of claims 1 to 7, characterized in that: The number of the columns (10) is two, and the bracket body (1) further comprises a sealing plate (12), the top of the sealing plate (12) is connected to the support platform (11), the sealing plate (12) is respectively connected to the two columns (10) on both sides along the first horizontal direction, and the bottom of the sealing plate (12) is recessed in the direction of the support platform (11).

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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