Sectional type suspension arm device with load structure

Abstract

The utility model discloses a sectional type suspension arm device with a load structure, which comprises a support column vertically erected on the ground, a suspension arm mechanism used for forming the sectional type suspension arm structure, an angle adjusting mechanism used for providing adjustable support for the suspension arm mechanism, and a load mechanism used as a suspension arm load structure, the suspension arm mechanism is assembled at the upper end of the supporting column, the angle adjusting mechanism is arranged between the supporting column and the suspension arm mechanism, and the load mechanism is arranged on one side of the supporting column. The lifting arm is flexible to use and quick, simple and convenient to disassemble and assemble, the whole lifting arm adopts a linear structural design, the lifting stability of an object can be guaranteed, the lifting arm is provided with the load mechanism, the load mechanism can serve as a load structure on the lifting arm to meet the lifting requirement of a large object, and the load capacity of the lifting arm is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting construction, in particular to a segmented boom device with a load structure. Background Art

[0002] In the prior art, a cantilever crane is a kind of crane with light working strength, which is mainly composed of a column, a slewing arm and an electric hoist. It has light deadweight and a large span. It is divided into a single-arm crane and a multi-arm crane. A single-arm crane is a common lifting equipment that uses a single column and a slewing arm to lift goods. The lower end of the column is generally fixed on the ground foundation, and the slewing arm can be rotated by electric or manual means. It has the advantages of simple structure, convenient operation, and large working space. It is an energy-saving and efficient material lifting equipment. Due to the influence of its own structure, the cantilever crane has uneven force, which is also the reason why the cantilever crane cannot lift heavy objects. The existing single-arm crane uses an electric hoist to lift and carry heavy objects. All loads act on the slewing arm and the column. The uneven force can only be compensated by the strength of the column and the slewing arm. The requirements for the column and the slewing arm are high, and if the bottom is not fixed stably and the weight distribution of the fuselage is seriously uneven, there will be a certain risk of tipping, and the overall stability of the single-arm crane is slightly poor.

[0003] The Chinese utility model patent with application number: 202322809553.9 discloses a structurally stable rotary cantilever crane, comprising a vertically arranged column and a horizontally arranged main beam, a slewing bearing is arranged between the top of the column and the main beam, and a slewing motor is arranged on the outside of the slewing bearing; a support arm is arranged between the main beam and the column, the top of the support arm is fixedly connected to the main beam, and a horizontal wheel is installed at the bottom of the support arm, and the horizontal wheel is attached to the side of the column; a drum is arranged at the end of the main beam, and a wire rope is wound around the drum, and a guide wheel corresponding to the drum is arranged at the front end of the main beam, and a running car device is arranged at the bottom of the main beam, and a sling is arranged below the running car device, and a fixed pulley is installed at the bottom of the running car device, and the wire rope on the drum is fixedly connected to the main beam after passing through the guide wheel, the fixed pulley and the sling. However, the structure of this kind of structurally stable rotary cantilever crane is relatively complex, and the length and angle of its boom cannot be adjusted according to the usage. It does not have a load structure and cannot meet the lifting requirements of large objects. Utility Model Content

[0004] The utility model aims to provide a sectional boom device with a load structure.

[0005] In order to achieve the above purpose, the technical solution proposed by the utility model is:

[0006] A segmented boom device with a load structure includes a support column, which is vertically erected on the ground, and also includes a boom mechanism for forming the segmented boom structure, an angle adjustment mechanism for providing adjustable support for the boom mechanism, and a load mechanism for serving as the boom load structure, the boom mechanism is assembled at the upper end of the support column, the angle adjustment mechanism is arranged between the support column and the boom mechanism, and the load mechanism is configured on one side of the support column.

[0007] The boom mechanism includes a boom base, a supporting boom, a connecting boom and an extension boom, the boom base being arranged at the upper end of the supporting column and rotatably connected to the supporting column through a mounting pin, the supporting boom being arranged at one side of the upper portion of the boom base and one end of which is fixedly connected to the boom base, the connecting boom being arranged at an end of the supporting boom away from the boom base and plugged into the supporting boom, the connecting boom and the supporting boom being connected through a telescopic assembly, the extension boom being arranged at an end of the connecting boom away from the supporting boom and plugged into the connecting boom, and the extension boom and the connecting boom being connected through a telescopic assembly.

[0008] It also includes a sling base block and a sling pin, the sling base blocks are provided with two groups, the two groups of sling base blocks are symmetrically arranged on both sides of one end of the extension arm away from the connecting arm and are fixedly connected to the extension arm, and a distance is set between the two groups of sling base blocks, and the sling pin is arranged at the lower part between the two groups of sling base blocks and is plugged with the two groups of sling base blocks.

[0009] The telescopic assembly includes a telescopic base, a telescopic cylinder and a telescopic mounting block. The telescopic base is arranged at one end of the supporting boom or the connecting boom and is fixedly connected to the corresponding supporting boom or the connecting boom. The telescopic cylinder is arranged on the upper part of the telescopic base and is fixedly connected to the telescopic base. The telescopic cylinder is arranged horizontally. The output end of the telescopic mounting block corresponding to the telescopic cylinder is arranged at one end of the connecting boom or the extension boom and is fixedly connected to the corresponding connecting boom or the extension boom. The output end of the telescopic cylinder is connected to the telescopic mounting block through a mounting shaft.

[0010] The angle adjustment mechanism includes an angle adjustment base, an angle adjustment cylinder and an angle adjustment connecting block. The angle adjustment base is arranged on one side of the lower part of the support column and is fixedly connected to the support column. The angle adjustment cylinder is arranged on one side of the angle adjustment base and is rotatably connected to the angle adjustment base through a rotating shaft. The angle adjustment connecting block is arranged at the lower part of one end of the boom base away from the support column and is rotatably connected to the boom base through a rotating shaft. The angle adjustment connecting block is fixedly connected to the output end of the angle adjustment cylinder.

[0011] The load mechanism includes a load motor, a guide assembly and a load connecting line. The load motor is arranged on one side of the lower part of the support column and is fixedly connected to the support column through a bracket. The guide assembly is assembled on the upper part of the load motor. The load connecting line is arranged at the output end of the load motor and one end thereof is connected to the load motor. The end of the load connecting line away from the load motor is connected to the support boom. The load connecting line realizes the connection between the load motor and the support boom through the guide assembly.

[0012] The guide assembly includes a guide base, a guide core roller and a guide end roller. The guide base is arranged on the upper part of the load motor through a bracket. The guide core roller is provided with two groups. The two groups of guide core rollers are arranged side by side and spaced apart on the inner side of the guide base and are rotatably connected to the guide base through a rotating shaft. The guide end roller is provided with two groups. The two groups of guide end rollers are symmetrically arranged on both sides of the upper part of the guide base and are rotatably connected to the guide base through a rotating shaft.

[0013] The guide core roller and the guide end roller are arranged perpendicular to each other, and the load connection line is arranged around the side of the guide core roller or the guide end roller.

[0014] It also includes a supporting mechanism, which includes a supporting base, a supporting pile and a supporting turntable, wherein the supporting base is set on the ground and arranged horizontally, the supporting pile is set at the upper end of the supporting base and fixedly connected to the supporting base, the supporting turntable is set at the upper end of the supporting pile and fixedly connected to the supporting pile, the supporting column is set at the output end of the supporting turntable and fixedly connected to the output end of the supporting turntable, and the supporting column is erected on the ground through the supporting mechanism.

[0015] The support base is composed of support plates and support rods. There are two groups of support plates, which are arranged in parallel and at intervals. There are four groups of support rods, which are arranged in an array between the two groups of support plates and whose two ends are respectively fixedly connected to the two groups of support plates. The support plates and the support rods together constitute a double-layer base structure.

[0016] The beneficial effects of the utility model are:

[0017] The structure is simple, with a boom mechanism and an angle adjustment mechanism working together to form a segmented boom structure with adjustable length and angle. It is flexible to use and quick and easy to disassemble and assemble. The overall boom adopts a linear structural design to ensure the stability of the object being hoisted. It is equipped with a load mechanism, which can be used as a load structure on the boom to meet the lifting needs of large objects, effectively improving the load capacity of the boom. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a top view of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the guide assembly of the utility model.

[0021] In the figure: 1. Support column; 2. Boom base; 3. Support boom; 4. Connect boom; 5. Extend boom; 6. Spreader base block; 7. Spreader latch; 8. Telescopic base; 9. Telescopic cylinder; 10. Telescopic mounting block; 11. Angle adjustment base; 12. Angle adjustment cylinder; 13. Angle adjustment connecting block; 14. Load motor; 15. Load connecting line; 16. Guide base; 17. Guide core roller; 18. Guide end roller; 19. Support base; 20. Support pile; 21. Support turntable. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0023] A sectional boom device with a load structure comprises a support column 1, the support column 1 is vertically erected on the ground, and also comprises a boom mechanism for constituting a sectional boom structure, an angle adjustment mechanism for providing adjustable support for the boom mechanism, and a load mechanism for serving as a boom load structure, the boom mechanism is assembled at the upper end of the support column 1, the angle adjustment mechanism is arranged between the support column 1 and the boom mechanism, and the load mechanism is arranged on one side of the support column 1. The overall structural schematic diagram of the utility model is shown in FIG. Figure 1 shown.

[0024] The boom mechanism includes a boom base 2, a supporting boom 3, a connecting boom 4 and an extending boom 5. The boom base 2 is arranged at the upper end of the supporting column 1 and is rotatably connected to the supporting column 1 through a mounting pin. The supporting boom 3 is arranged on one side of the upper part of the boom base 2 and one end thereof is fixedly connected to the boom base 2. The connecting boom 4 is arranged at the end of the supporting boom 3 away from the boom base 2 and is plugged into the supporting boom 3. The connecting boom 4 is connected to the supporting boom 3 through a telescopic component. The extending boom 5 is arranged at the end of the connecting boom 4 away from the supporting boom 3 and is plugged into the connecting boom 4. The extending boom 5 is connected to the connecting boom 4 through a telescopic component. The boom mechanism is connected through the boom base The seat 2, the supporting boom 3, the connecting boom 4 and the extending boom 5 cooperate to form a segmented boom structure with adjustable length, wherein the boom base 2 is used to provide installation support for the supporting boom 3 and install the supporting boom 3 on the supporting column 1, the supporting boom 3 is used to provide installation support for the connecting boom 4, the connecting boom 4 is used to provide installation support for the extending boom 5 and form a retractable segmented boom structure together with the supporting boom 3, and the extending boom 5 is used to form a retractable segmented boom structure together with the connecting boom 4. The telescopic state between the supporting boom 3, the connecting boom 4 and the extending boom 5 can be adjusted according to actual usage requirements to adjust the length of the boom.

[0025] It also includes a sling base block 6 and a sling pin 7. The sling base block 6 is provided with two groups. The two groups of sling base blocks 6 are symmetrically arranged on both sides of one end of the extension boom 5 away from the connecting boom 4 and are fixedly connected to the extension boom 5. There is a spacing between the two groups of sling base blocks 6. The sling pin 7 is arranged at the lower part between the two groups of sling base blocks 6 and is plugged into the two groups of sling base blocks 6. The sling base block 6 is used to provide installation support for the sling pin 7. The sling pin 7 is used to form a base structure together with the sling base block 6, thereby serving as a mounting structure at the end of the boom and providing installation support for the sling.

[0026] The telescopic assembly includes a telescopic base 8, a telescopic cylinder 9 and a telescopic mounting block 10. The telescopic base 8 is arranged at one end of the supporting boom 3 or the connecting boom 4 and is fixedly connected to the corresponding supporting boom 3 or the connecting boom 4. The telescopic cylinder 9 is arranged on the upper part of the telescopic base 8 and is fixedly connected to the telescopic base 8. The telescopic cylinder 9 is arranged horizontally. The output end of the telescopic mounting block 10 corresponding to the telescopic cylinder 9 is arranged at one end of the connecting boom 4 or the extension boom 5 and is fixedly connected to the corresponding connecting boom 4 or the extension boom 5. The output end of the telescopic cylinder 9 is connected to the telescopic mounting block 10 through a mounting shaft. The telescopic assembly is connected to the telescopic base 8, the telescopic cylinder 9 and The telescopic mounting block 10 cooperates to control the relative extension length between the connecting boom 4 and the supporting boom 3, and the relative extension length between the extension boom 5 and the connecting boom 4. The telescopic base 8 is used to provide installation support for the telescopic cylinder 9. The telescopic cylinder 9 is used to control the horizontal movement of the corresponding boom through the telescopic action of its output end, thereby controlling the relative extension length between the connecting boom 4 and the supporting boom 3, and the relative extension length between the extension boom 5 and the connecting boom 4. The telescopic mounting block 10 is used as a mounting structure at the end of the telescopic cylinder 9 to realize the installation connection between the telescopic cylinder 9 and the corresponding boom. The top view of the utility model is as shown in FIG. Figure 2 shown.

[0027] The angle adjustment mechanism includes an angle adjustment base 11, an angle adjustment cylinder 12 and an angle adjustment connection block 13. The angle adjustment base 11 is arranged on one side of the lower part of the support column 1 and is fixedly connected to the support column 1. The angle adjustment cylinder 12 is arranged on one side of the angle adjustment base 11 and is rotatably connected to the angle adjustment base 11 through a rotating shaft. The angle adjustment connection block 13 is arranged at the lower part of one end of the boom base 2 away from the support column 1 and is rotatably connected to the boom base 2 through a rotating shaft. The angle adjustment connection block 13 is fixedly connected to the output end of the angle adjustment cylinder 12. The mechanism adjusts the pitch angle of the boom by cooperating with an angle adjustment base 11, an angle adjustment cylinder 12 and an angle adjustment connecting block 13, wherein the angle adjustment base 11 is used to provide installation support for the angle adjustment cylinder 12 so as to install the angle adjustment cylinder 12 on the support column 1, the angle adjustment cylinder 12 is used to drive the boom to perform a pitch movement through the telescopic action of its output end, thereby adjusting the pitch angle of the boom, and the angle adjustment connecting block 13 is used to realize the installation connection between the output end of the angle adjustment cylinder 12 and the boom.

[0028] The load mechanism includes a load motor 14, a guide assembly and a load connecting line 15. The load motor 14 is arranged on one side of the lower part of the support column 1 and is fixedly connected to the support column 1 through a bracket. The guide assembly is assembled on the upper part of the load motor 14. The load connecting line 15 is arranged at the output end of the load motor 14 and one end thereof is connected to the load motor 14. The end of the load connecting line 15 away from the load motor 14 is connected to the supporting boom 3. The load connecting line 15 realizes the connection between the load motor 14 and the supporting boom 3 through the guide assembly. The load mechanism cooperates with the load motor 14, the guide assembly and the load connecting line 15 to form a load structure on the boom device, wherein the load motor 14 is used to connect to the boom through the load connecting line 15 and apply a load to the boom through the rotation of its output end, thereby improving the lifting capacity of the boom device. The guide assembly is used to guide the load connecting line 15, and the load connecting line 15 is used to connect the output end of the load motor 14 to the boom.

[0029] The guide assembly includes a guide base 16, a guide core roller 17 and a guide end roller 18. The guide base 16 is arranged on the upper part of the load motor 14 through a bracket. There are two groups of guide core rollers 17. The two groups of guide core rollers 17 are arranged side by side and spaced inside the guide base 16 and are rotatably connected to the guide base 16 through a rotating shaft. There are two groups of guide end rollers 18. The two groups of guide end rollers 18 are symmetrically arranged on both sides of the upper part of the guide base 16 and are rotatably connected to the guide base 16 through a rotating shaft. The guide core rollers 17 and the guide end rollers 18 are arranged perpendicular to each other and the load connecting line 15 is arranged around the guide. Toward the side of the core roller 17 or the guide end roller 18, the guide assembly guides the load connection line 15 through the cooperation of the guide base 16, the guide core roller 17 and the guide end roller 18, wherein the guide base 16 is used to provide installation support for the guide core roller 17 and the guide end roller 18, and the guide core roller 17 and the guide end roller 18 together constitute a guide structure on the guide base 16, thereby guiding the load connection line 15, and the guide core roller 17 and the guide end roller 18 can realize the lateral and longitudinal guidance of the load connection line 15. The schematic diagram of the guide assembly structure of the utility model is shown in Figure 3 shown.

[0030] It also includes a supporting mechanism, which includes a supporting base 19, a supporting pile 20 and a supporting turntable 21. The supporting base 19 is set on the ground and the supporting base 19 is arranged horizontally. The supporting pile 20 is set at the upper end of the supporting base 19 and is fixedly connected to the supporting base 19. The supporting turntable 21 is set at the upper end of the supporting pile 20 and is fixedly connected to the supporting pile 20. The supporting column 1 is set at the output end of the supporting turntable 21 and is fixedly connected to the output end of the supporting turntable 21. The supporting column 1 is erected on the ground through the supporting mechanism. The supporting mechanism cooperates with the supporting base 19, the supporting pile 20 and the supporting turntable 21 to form a supporting structure, thereby providing installation support for the boom device and can drive the boom device to rotate according to actual use requirements, wherein the supporting base 19 is used to provide installation support for the supporting pile 20, the supporting pile 20 is used to provide installation support for the supporting turntable 21, and the supporting turntable 21 is used to provide installation support for the supporting column 1 and can drive the supporting column 1 to rotate to drive the boom device to rotate.

[0031] The support base 19 is composed of a support plate and a support rod. There are two groups of support plates, which are arranged in parallel and spaced apart. There are four groups of support rods, which are arranged in an array between the two groups of support plates and whose two ends are respectively fixedly connected to the two groups of support plates. The support plates and the support rods together constitute a double-layer base structure, wherein the support plates are used to provide installation support for the support rods, and the support rods are used to constitute a double-layer base structure together with the support plates.

[0032] Working principle:

[0033] The sling is installed at one end of the boom device through the sling base block 6 and the sling pin 7, and then the object can be hoisted by the sling. During the hoisting process, the telescopic state between the supporting boom 3, the connecting boom 4 and the extending boom 5 can be adjusted according to actual usage requirements to adjust the length of the boom, and the pitch angle of the boom can be adjusted by the angle adjustment mechanism. The overall rotation of the boom device can be driven by the support turntable 21. When large objects need to be hoisted, the load motor 14 applies a load to the boom through the load connecting line 15, thereby improving the hoisting capacity of the boom to meet the hoisting requirements of large objects.

[0034] The beneficial effects of the utility model are that the structure is simple, and a boom mechanism and an angle adjustment mechanism are cooperated to form a segmented boom structure with adjustable length and angle. The structure is flexible to use and quick and easy to disassemble and assemble. The overall boom adopts a linear structural design to ensure the stability of the object being lifted. A load mechanism is provided, which can be used as a load structure on the boom to meet the lifting needs of large objects, thereby effectively improving the load capacity of the boom.

[0035] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A sectional boom device with a load structure, comprising a support column (1), wherein the support column (1) is vertically erected on the ground, It is characterized in that It also includes a boom mechanism for forming a segmented boom structure, an angle adjustment mechanism for providing adjustable support for the boom mechanism, and a load mechanism for serving as a boom load structure. The boom mechanism is mounted on the upper end of the support column (1), the angle adjustment mechanism is arranged between the support column (1) and the boom mechanism, and the load mechanism is arranged on one side of the support column (1).

2. A sectional boom device with a load structure as claimed in claim 1, It is characterized in that The boom mechanism comprises a boom base (2), a supporting boom (3), a connecting boom (4) and an extending boom (5); the boom base (2) is arranged at the upper end of the supporting column (1) and is rotatably connected to the supporting column (1) via a mounting pin; the supporting boom (3) is arranged on one side of the upper part of the boom base (2) and one end thereof is fixedly connected to the boom base (2); the connecting boom (4) is arranged at one end of the supporting boom (3) away from the boom base (2) and is plugged into the supporting boom (3); the connecting boom (4) and the supporting boom (3) are connected via a telescopic assembly; the extending boom (5) is arranged at one end of the connecting boom (4) away from the supporting boom (3) and is plugged into the connecting boom (4); the extending boom (5) and the connecting boom (4) are connected via a telescopic assembly.

3. A sectional boom device with a load structure as claimed in claim 2, It is characterized in that It also includes a sling base block (6) and a sling pin (7), wherein the sling base blocks (6) are provided in two groups, the two groups of sling base blocks (6) are symmetrically arranged on both sides of one end of the extension boom (5) away from the connecting boom (4) and are fixedly connected to the extension boom (5), and a spacing is provided between the two groups of sling base blocks (6), and the sling pin (7) is arranged at the lower part between the two groups of sling base blocks (6) and is plugged into the two groups of sling base blocks (6).

4. A sectional boom device with a load structure as claimed in claim 3, It is characterized in that The telescopic assembly comprises a telescopic base (8), a telescopic cylinder (9) and a telescopic mounting block (10); the telescopic base (8) is arranged at one end of the supporting boom (3) or the connecting boom (4) and is fixedly connected to the corresponding supporting boom (3) or the connecting boom (4); the telescopic cylinder (9) is arranged on the upper part of the telescopic base (8) and is fixedly connected to the telescopic base (8); the telescopic cylinder (9) is arranged horizontally; the output end of the telescopic mounting block (10) corresponding to the output end of the telescopic cylinder (9) is arranged at one end of the connecting boom (4) or the extension boom (5) and is fixedly connected to the corresponding connecting boom (4) or the extension boom (5); the output end of the telescopic cylinder (9) is connected to the telescopic mounting block (10) via a mounting shaft.

5. A sectional boom device with a load structure as claimed in claim 4, It is characterized in that The angle adjustment mechanism comprises an angle adjustment base (11), an angle adjustment cylinder (12) and an angle adjustment connection block (13); the angle adjustment base (11) is arranged on one side of the lower part of the support column (1) and is fixedly connected to the support column (1); the angle adjustment cylinder (12) is arranged on one side of the angle adjustment base (11) and is rotatably connected to the angle adjustment base (11) via a rotating shaft; the angle adjustment connection block (13) is arranged at the lower part of one end of the boom base (2) away from the support column (1) and is rotatably connected to the boom base (2) via a rotating shaft; and the angle adjustment connection block (13) is fixedly connected to the output end of the angle adjustment cylinder (12).

6. A sectional boom device with a load structure as claimed in claim 5, It is characterized in that The load mechanism comprises a load motor (14), a guide assembly and a load connecting line (15); the load motor (14) is arranged on one side of the lower part of the support column (1) and is fixedly connected to the support column (1) through a bracket; the guide assembly is assembled on the upper part of the load motor (14); the load connecting line (15) is arranged at the output end of the load motor (14) and one end thereof is connected to the load motor (14); one end of the load connecting line (15) away from the load motor (14) is connected to the support boom (3); and the load connecting line (15) realizes the connection between the load motor (14) and the support boom (3) through the guide assembly.

7. A sectional boom device with a load structure as claimed in claim 6, It is characterized in that The guide assembly comprises a guide base (16), a guide core roller (17) and a guide end roller (18). The guide base (16) is arranged on the upper part of the load motor (14) through a bracket. The guide core roller (17) is provided with two groups. The two groups of guide core rollers (17) are arranged side by side and spaced apart on the inner side of the guide base (16) and are rotatably connected to the guide base (16) through a rotating shaft. The guide end roller (18) is provided with two groups. The two groups of guide end rollers (18) are symmetrically arranged on both sides of the upper part of the guide base (16) and are rotatably connected to the guide base (16) through a rotating shaft.

8. A sectional boom device with a load structure as claimed in claim 7, It is characterized in that The guide core roller (17) and the guide end roller (18) are arranged perpendicular to each other, and the load connection line (15) is arranged around the side of the guide core roller (17) or the guide end roller (18).

9. A sectional boom device with a load structure as claimed in claim 8, It is characterized in that The invention also comprises a supporting mechanism, which comprises a supporting base (19), a supporting pile (20) and a supporting turntable (21); the supporting base (19) is arranged on the ground and is arranged horizontally; the supporting pile (20) is arranged at the upper end of the supporting base (19) and is fixedly connected to the supporting base (19); the supporting turntable (21) is arranged at the upper end of the supporting pile (20) and is fixedly connected to the supporting pile (20); the supporting column (1) is arranged at the output end of the supporting turntable (21) and is fixedly connected to the output end of the supporting turntable (21); and the supporting column (1) is erected on the ground through the supporting mechanism.

10. A sectional boom device with a load structure as claimed in claim 9, It is characterized in that The support base (19) is composed of support plates and support rods. The support plates are provided in two groups, and the two groups of support plates are arranged in parallel and spaced apart. The support rods are provided in four groups, and the four groups of support rods are arranged in an array between the two groups of support plates, and the two ends of the four groups of support rods are respectively fixedly connected to the two groups of support plates. The support plates and the support rods together form a double-layer base structure.

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