Crane suspension arm with multi-position hooking function and crane

Abstract

The utility model discloses a crane jib with a multi-position hitching function and a crane, and belongs to the technical field of cranes, the crane jib comprises a jib body, the jib body is composed of a plurality of telescopic joint jibs, hitching structures are arranged at the jib heads of the telescopic joint jibs, the hitching structures are connected with lifting hooks, and each hitching structure comprises a main body part. A limiting groove is formed in the main body part in the vertical direction, an opening structure is arranged on the side face of the limiting groove, the lifting hook comprises a limiting part, a connecting part and a hook body which are sequentially connected from top to bottom, the limiting part is slidably arranged in the limiting groove, a step face used for supporting the lower portion of the limiting part is arranged in the limiting groove, and the size of the connecting part is smaller than that of the opening structure. The main body part is provided with a stop structure used for limiting the upward stroke. The lifting appliance is suitable for the crane, does not influence the working space of the lifting arm, and is high in stability, simple in lifting appliance dismounting and replacing process and high in working efficiency.

Description

Technical Field

[0001] The utility model relates to a crane boom with a multi-position hanging function and a crane, belonging to the technical field of cranes. Background Art

[0002] The crane boom is used to support the lifting of the objects, and can make the objects have a certain lifting height and amplitude. It can vertically lift and carry the objects to move in multiple movements within a certain range. The crane boom uses a hook to hang the objects, and the hook is suspended on the wire rope of the crane with the help of a pulley block and other components. The crane boom generally adopts a telescopic boom. The telescopic boom is one of the commonly used devices in lifting operations. It is composed of multiple combined arms. Its main function is to increase the lifting distance and height. Using a telescopic boom in deep depths or special occasions can make the crane foothold more flexible and improve work efficiency. In indoor operations, the use of a telescopic boom can also avoid the problem of the crane being unable to enter the construction area.

[0003] The prior art patent publication number CN202967882U, the invention name of which is a combined hook and a crane having the same, discloses a combined hook, including a hook frame and a hook, wherein the hook frame includes a main hook frame and an auxiliary hook frame, wherein the auxiliary hook frame is detachably connected to the lower end of the main hook frame, and the hook is arranged at the lower end of the auxiliary hook frame. Since a hook frame including a main hook frame and an auxiliary hook frame is adopted, and the upper end of the auxiliary hook frame is detachably connected to the lower end of the main hook frame, according to the required magnification, the main hook frame and the auxiliary hook frame can be selected to be used at the same time, or only the auxiliary hook frame can be used to adjust the magnification. The above patent has the following technical problems: 1. High requirements for hoisting space: hoisting operations within the basic arm cannot be carried out, and it is not easy to complete hoisting operations in a small space when the telescopic arm is not extended. It is difficult to adapt to smaller working scenarios; 2. The process of replacing the hook and rigging is complicated: in different lifting scenarios, when the sling needs to be replaced, the wire rope needs to be disassembled, and the lifting process is complicated, affecting work efficiency; 3. The lifting process is unstable. Since the sling and the boom are connected by wire ropes, shaking will occur when certain materials need to be lifted or stabilized. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a crane boom and a crane with a multi-position hanging function, which does not affect the working space of the boom, has high stability, simple process of disassembly and replacement of the sling, and high work efficiency.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A crane boom with a multi-position hanging function comprises a boom, the boom is composed of a plurality of telescopic booms, a hanging structure is arranged at the boom head of the telescopic boom, the hanging structure is connected to a hook, the hanging structure comprises a main body, a limiting groove is arranged in the vertical direction in the main body, an opening structure is arranged on the side of the limiting groove, the hook comprises a limiting part, a connecting part and a hook which are connected in sequence from top to bottom, the limiting part is slidably arranged in the limiting groove, a step surface for supporting the lower part of the limiting part is arranged in the limiting groove, the size of the connecting part is smaller than the size of the opening structure, and a stop structure for limiting the upward stroke of the limit is installed on the main body.

[0007] The stop structure includes a pin shaft, and two pin shaft holes are provided on the upper part of the main body. A safety pin is installed after the front end of the pin shaft passes through the two pin shaft holes, and the pin shaft is located above the hook.

[0008] The hanging structure and the telescopic arm are connected by welding.

[0009] The limiting portion is cylindrical in shape, and the limiting groove is arc-shaped.

[0010] A placement groove is provided in the main body above the limiting groove, and the limiting groove is connected to the placement groove.

[0011] The opening directions of the limiting groove and the placing groove are toward the rear of the hanging structure.

[0012] The number of the telescopic arms is 2 to 10.

[0013] A crane, comprising the crane boom with multi-position hooking function

[0014] The beneficial effects of the utility model: the utility model provides a crane boom and a crane with a multi-position hanging function, a hanging structure is arranged at the arm head of the telescopic boom, the hanging structure is connected with a hook, the structure occupies a small space and basically does not affect the working space of the boom; a limiting groove is provided in the vertical direction in the main body of the hanging structure, the limiting part of the hook is slidably arranged in the limiting groove, a step surface for supporting the bottom of the limiting part is provided in the limiting groove, and the use of a rigidly connected hook can better ensure the stability of the lifting operation and ensure the safety during the lifting operation; an opening structure is provided on the side of the limiting groove, the size of the connecting part is smaller than the size of the opening structure, the hook can be directly placed in the hanging structure from the back to the front, the process of disassembling and replacing the sling is simple, and the work efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the retracted structure of a crane boom with a multi-position hooking function according to the utility model;

[0016] Figure 2 It is a schematic diagram of the extension structure of a crane boom with a multi-position hooking function according to the utility model;

[0017] Figure 3 It is a schematic diagram of the exploded structure of the crane boom in the utility model;

[0018] Figure 4 It is a structural schematic diagram of the hanging structure and the hook in the utility model;

[0019] Figure 5 This is a structural schematic diagram of the hook in the utility model being placed horizontally into the hanging structure;

[0020] Figure 6 This is a structural schematic diagram of the utility model in which the hook is horizontally placed into the hanging structure and then vertically lowered;

[0021] Figure 7 and Figure 8 This is a horizontal limit diagram of the hook in the utility model;

[0022] Fig. 9 This is a diagram of the vertical limit of the hook in the utility model.

[0023] The reference numerals in the figure are as follows: 1- boom; 2- hanging structure; 3- hook; 4- pin; 5- safety pin; 21- pin hole; 22- limiting groove; 23- placing groove; 31- limiting part; 32- connecting part; 33- hook. DETAILED DESCRIPTION

[0024] Example 1

[0025] The utility model discloses a crane boom with a multi-position hanging function, comprising a boom 1, a multi-position hanging structure is added on the basis of a conventional boom 1, and the multi-position hanging structure is used to make the hook hang quickly. The boom 1 is composed of a plurality of telescopic booms 11, and a hanging structure 2 is arranged at the boom head of the telescopic boom 11 to realize the quick hanging working condition of each boom. Figure 1 This is a structural diagram of the boom of the utility model in a fully retracted state, where a quick-loading and unloading hook can be hung under each boom section. Figure 2 This is a working diagram of the utility model's hook being hung under a three-section arm.

[0026] like Figure 3 and Figure 4 As shown, the hanging structure 2 is connected with a hook 3, the hanging structure 2 includes a main body, a limiting groove 22 is provided in the vertical direction of the main body, an opening structure is provided on the side of the limiting groove 22, the hook 3 includes a limiting portion 31, a connecting portion 32 and a hook 33 connected in sequence from top to bottom, the limiting portion 31 is slidably arranged in the limiting groove 22, a step surface for supporting the lower side of the limiting portion 31 is provided in the limiting groove 22, the size of the connecting portion 32 is smaller than the size of the opening structure,

[0027] like Figure 7 and Figure 8 As shown, the placed hook 3 is limited in horizontal movement by the limiting groove 22 in the hanging structure 2. Fig. 9 As shown, the placed hook 3 is limited in vertical movement by its own gravity through the limit groove 22 in the hanging structure 2. In addition, the upward travel of the limit part 31 of the hook 3 is limited by the stop structure on the main body of the hanging structure to prevent the hook 3 from accidentally falling off due to up and down movement during the lifting process.

[0028] The working principle of the utility model is as follows: after the hook 3 is horizontally placed in the hanging structure 2, the state is as follows Figure 5 As shown, the hook 2 is then placed vertically into the limit slot, and the state is as follows Figure 6 As shown, the limiting groove 22 of the hanging structure 2 can limit the horizontal direction of the hook 2, and then the up and down travel of the hook is limited by the gravity of the hook 2 itself and the stop structure.

[0029] The utility model provides a crane boom with a hanging structure at the boom head of the telescopic boom, the hanging structure is connected with a hook, the structure occupies a small space and basically does not affect the working space of the boom; a limiting groove is provided in the vertical direction in the main body of the hanging structure, the limiting part of the hook is slidably arranged in the limiting groove, a step surface for supporting the lower part of the limiting part is provided in the limiting groove, and the rigid connection hook is used to better ensure the stability of the lifting operation and ensure the safety during the lifting operation; an opening structure is provided on the side of the limiting groove, the size of the connecting part is smaller than the size of the opening structure, the hook can be directly placed in the hanging structure from the back to the front, the lifting equipment disassembly and replacement process is simple, and the work efficiency is high.

[0030] Example 2

[0031] The utility model discloses a crane boom with a multi-position hanging function, comprising a boom 1, a multi-position hanging structure is added on the basis of a conventional boom 1, and the hook is quickly hung by using the multi-position hanging structure. The boom 1 is composed of a plurality of telescopic booms 11, and the number of the telescopic booms 11 is 2 to 10. A hanging structure 2 is arranged at the boom head of the telescopic boom 11, and the hanging structure 2 is welded to the telescopic boom 11 to realize the quick hanging working condition of each boom. Figure 1 This is a structural diagram of the boom of the utility model in a fully retracted state, where a quick-loading and unloading hook can be hung under each boom section. Figure 2 This is a working diagram of the utility model's hook being hung under a three-section arm.

[0032] like Figure 3 and Figure 4As shown, the hanging structure 2 is connected with a hook 3, and the hanging structure 2 includes a main body, and a limiting groove 22 is provided in the vertical direction in the main body, and an opening structure is provided on the side of the limiting groove 22. The hook 3 includes a limiting part 31, a connecting part 32 and a hook 33 connected in sequence from top to bottom, and the limiting part 31 is slidably provided in the limiting groove 22. The limiting part 31 is cylindrical in shape, and the limiting groove 22 is arc-shaped. A step surface for supporting the lower side of the limiting part 31 is provided in the limiting groove 22, and the size of the connecting part 32 is smaller than the size of the opening structure.

[0033] like Figure 7 and Figure 8 As shown, the placed hook 3 is limited in horizontal movement by the limiting groove 22 in the hanging structure 2. Fig. 9 As shown, the placed hook 3 is limited by its own gravity in the vertical direction through the limit groove 22 in the hanging structure 2, and the stop structure on the main body of the hanging structure limits the upward travel of the limit part 31 of the hook 3 to prevent the hook 3 from accidentally falling off due to the up and down movement during the hanging process. The stop structure includes a pin 4, and two pin holes 21 are provided on the upper part of the main body. A safety pin 5 is installed after the front end of the pin 4 passes through the two pin holes 21, and the pin 4 is located above the hook 3.

[0034] A placement slot 23 is provided in the main body above the limiting slot 22, and the limiting slot 22 is connected to the placement slot 23. The opening directions of the limiting slot 22 and the placement slot 23 face the rear of the hanging structure 2.

[0035] The working principle of the utility model is: the hook 3 is horizontally placed into the hanging structure 2 from the back to the front, and the state is as follows Figure 5 As shown, at this time, the limiting portion 31 is located in the placement groove 23, the connecting portion 32 is located in the limiting groove 22, and then the hook 2 is vertically lowered into the limiting groove, the state is as shown Figure 6 As shown, the limiting portion 31 falls into the limiting groove 22, and the limiting groove 22 of the hanging structure 2 can limit the horizontal direction of the hook 2. Finally, the safety pin 5 is inserted into the pin shaft 4 to complete the installation. The safety pin 5 is used to limit the up and down travel of the hook 3.

[0036] Example 3

[0037] This embodiment discloses a crane, including the crane boom with multi-position hooking function in Embodiment 2.

[0038] The above are only preferred implementations of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A crane boom with a multi-position hooking function, characterized in that: The invention comprises a boom (1), wherein the boom (1) comprises a plurality of telescopic arms (11), wherein a hanging structure (2) is arranged at the arm head of each telescopic arm (11), wherein the hanging structure (2) is connected to a hook (3), wherein the hanging structure (2) comprises a main body, wherein a limiting groove (22) is axially provided in the main body, wherein an opening structure is arranged on the side of the limiting groove (22), wherein the hook (3) comprises a limiting part (31), a connecting part (32) and a hook (33) which are connected in sequence, wherein the limiting part (31) is slidably arranged in the limiting groove (22), wherein a step surface for supporting the limiting part (31) is arranged in the limiting groove (22), wherein the size of the connecting part (32) is smaller than the size of the opening structure, and wherein a stop structure for limiting the upward travel of the limiting part (31) is installed on the main body.

2. The crane boom with multi-position hooking function according to claim 1, characterized in that: The stop structure comprises a pin shaft (4), two pin shaft holes (21) are provided on the upper part of the main body, a safety pin (5) is installed after the front end of the pin shaft (4) passes through the two pin shaft holes (21), and the pin shaft (4) is located above the hook (3).

3. The crane boom with multi-position hooking function according to claim 1, characterized in that: The hanging structure (2) and the telescopic arm (11) are connected by welding.

4. The crane boom with multi-position hooking function according to claim 1, characterized in that: The limiting portion (31) is cylindrical in shape, and the limiting groove (22) is arc-shaped.

5. The crane boom with multi-position hooking function according to claim 1, characterized in that: A placement groove (23) is provided in the main body above the limiting groove (22), and the limiting groove (22) and the placement groove (23) are connected together.

6. The crane boom with multi-position hooking function according to claim 5, characterized in that: The opening directions of the limiting groove (22) and the placement groove (23) are oriented toward the rear of the hanging structure (2).

7. The crane boom with multi-position hooking function according to claim 1, characterized in that: The number of the telescopic arms (11) is 2 to 10.

8. A crane, characterized in that: A crane boom with a multi-position hooking function comprising any one of claims 1 to 7.

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