Movable lifting platform for girth welding of wind power tower

Abstract

The utility model discloses a movable wind power tower girth welding lifting platform which comprises a welding platform, a lifting device, a left gate-type vertical frame and a right gate-type vertical frame, the top of the left gate-type vertical frame and the top of the right gate-type vertical frame are connected through a connecting beam, and the two ends of the welding platform are connected with the gate-type vertical frames in a sliding mode respectively. The gate-type vertical frame comprises a top connecting beam, a bottom connecting beam, a front stand column and a rear stand column, the tops of the front stand column and the rear stand column are connected through the top connecting beam, and the bottoms of the front stand column and the rear stand column are connected through the bottom connecting beam; the lifting device is installed on the top connecting beam and used for driving the welding platform to move up and down. And lockable universal wheels are mounted below the bottom connecting beams. The device has the advantages of light and handy structure and flexible arrangement, and is convenient to move and temporarily fixed by being matched with the universal wheels capable of being locked at the bottom. The platform can be lifted and adjusted according to the diameter of the wind power tower barrel section, and is suitable for welding personnel to operate.

Description

Technical Field

[0001] The utility model relates to the field of wind power tower barrel manufacturing, and particularly relates to a movable lifting platform for circumferential seam welding of wind power tower barrels. Background Technique

[0002] The wind power tower barrel is the tower pole of wind power generation and mainly plays a supporting role in the wind power generating set. The tower barrel must have sufficient anti-fatigue strength and can withstand the vibration loads caused by the rotation of the wind blades, including the periodic effects of starting and stopping, gust changes, tower shadow effects, etc. Most of the diameters of the tower barrels are about 3.5 meters. Generally, the larger the fan power, the larger the diameter of its tower barrel. For fans above 1000 kv, the tower barrel diameter is about 5 meters. During the manufacturing process of wind power generation, the welding of the tower barrel welds is an important factor affecting the progress and quality. The butt weld of the tower barrel section is circumferential seam welding along the circumference. To ensure the welding quality, a welding platform is mostly built at the top of the tower barrel and flat welding is used for welding. At present, for the welding of the circumferential seam of the barrel section butt joint, an orbital lifting platform is usually adopted. This kind of welding platform can only be used on a single production line, and the supporting facilities and tracks limit its operation space, and the tower barrel can only carry out the circumferential seam welding operation of the barrel section at a fixed position. Content of the Utility Model

[0003] In order to solve the defects existing in the above technologies, the utility model provides a movable lifting platform for circumferential seam welding of wind power tower barrels.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is a movable lifting platform for circumferential seam welding of wind power tower barrels, which includes a welding platform, a lifting device, and two left and right gantry stands. The tops of the two left and right gantry stands are connected by a connecting beam, and the two ends of the welding platform are respectively slidably connected to the gantry stands; the gantry stand includes a top connecting beam, a bottom connecting beam, and two front and rear columns. The tops of the two front and rear columns are connected by the top connecting beam, and the bottoms of the two front and rear columns are connected by the bottom connecting beam; the lifting device is installed on the top connecting beam, and the lifting device is used to drive the welding platform to move up and down; a lockable universal wheel is installed below the bottom connecting beam.

[0005] The lockable universal wheel has a structure that allows 360° rotation and has a fixed locking function.

[0006] Preferably, the welding platform includes a main frame platform. The front and rear ends of the upper part of the main frame platform extend outward to be provided with horizontal limiting arms, and front limiting guide wheels are installed on the horizontal limiting arms. The front and rear ends of the middle part of the main frame platform are installed with rear limiting guide wheels. The front limiting guide wheels and the rear limiting guide wheels are respectively located on both sides of the column and are in rolling contact with the column.

[0007] Preferably, lifting lugs are respectively arranged at the front and rear ends of the top of the left and right sides of the main frame platform.

[0008] Preferably, the lifting device is used to drive the welding platform to move up and down. The lifting device includes a lifting motor fixed in the middle of the top connecting beam. Sprocket supports are respectively arranged at both ends of the top connecting beam. Gears are arranged on the sprocket supports. The two gears are connected by a synchronous transmission shaft. The synchronous transmission shaft is in transmission connection with the driving wheel of the lifting motor. The gears are connected with the lifting lugs on the main frame platform through chains.

[0009] Preferably, guardrails are arranged around the main frame platform.

[0010] Preferably, diamond plates are laid on the main frame platform, and a welding hole is reserved in the middle of the frame platform.

[0011] Preferably, there is a ladder. The ladder is located on the side of one of the columns, connected to the connecting beam at the top and connected to the column at the bottom for the convenience of personnel to go up and down.

[0012] Preferably, a notch is reserved in the guardrail on the side where the ladder is provided for the convenience of personnel to go up and down.

[0013] Preferably, the front and rear two columns of the gantry upright frame are reinforced by supports.

[0014] Preferably, the gantry upright frame and the connecting beam are reinforced by diagonal braces.

[0015] The beneficial effects produced by the present utility model are as follows: The present utility model is a movable wind power tower barrel girth welding lifting platform, which is composed of a gantry upright frame with a double-sided structure and a lifting welding platform. It has the advantages of light structure and flexible layout. At the same time, it is equipped with lockable universal wheels at the bottom, which is convenient for movement and temporary fixation. The platform can be lifted and adjusted according to the diameter of the wind power tower barrel section, suitable for welders to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of the present utility model;

[0017] Figure 2 is a front view of the present utility model;

[0018] Figure 3 is a perspective view of the gantry upright frame of the present utility model;

[0019] Figure 4 is a perspective view of the welding platform of the present utility model;

[0020] Figure 5 is a schematic diagram of the lifting device of the present utility model. DETAILED DESCRIPTION OF THE INVENTION

[0021] To further understand the present utility model, the following further describes the present utility model with reference to the accompanying drawings of the specification and specific embodiments.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present utility model.

[0023] As Figures 1-5 shown, a movable lifting platform for circumferential welding of wind power tower barrels includes a welding platform 2, a lifting device 3, and two left and right gantry stands 1. The tops of the two left and right gantry stands are connected by a connecting beam 14, and the two ends of the welding platform 2 are respectively slidably connected to the gantry stand 1; the gantry stand 1 includes a top connecting beam 13, a bottom connecting beam 12, and two front and rear columns 11. The tops of the two front and rear columns 11 are connected by the top connecting beam 13, and the bottoms of the two front and rear columns 11 are connected by the bottom connecting beam 12; the lifting device 3 is installed on the top connecting beam 13, and the lifting device 3 is used to drive the welding platform 2 to move up and down; a lockable universal wheel 5 is installed below the bottom connecting beam 12. The lockable universal wheel 5 has a structure that allows 360° rotation and has a fixed locking function.

[0024] The welding platform 2 includes a main frame platform 24. The front and rear ends (the four corners of the upper part of the main frame platform 24) of the upper part of the main frame platform 24 extend outward to form horizontal limiting arms 21. Front limiting guide wheels 23 are installed on the horizontal limiting arms 21. Rear limiting guide wheels 22 are installed at the front and rear ends of the middle part of the main frame platform 24. The front limiting guide wheels 23 and the rear limiting guide wheels 22 are respectively located on both sides of the column 11 and are in rolling contact with the column 11.

[0025] The main frame platform 24 and the horizontal limiting arm 21 are strengthened and connected by "T" - shaped parts 28 and "L" - shaped parts 29.

[0026] Lifting lugs 26 are respectively arranged at the front and rear ends of the tops of the left and right sides of the main frame platform 24.

[0027] The lifting device 3 is used to drive the welding platform 2 to move up and down. The lifting device 3 includes a lifting motor 31 fixed in the middle of the top connecting beam 13. Sprocket supports 32 are arranged oppositely at both ends of the top connecting beam 13. A gear 33 is arranged on the sprocket support 32. The two gears 33 are connected by a synchronous transmission shaft 34. The synchronous transmission shaft 34 is in transmission connection with the driving wheel of the lifting motor 31. The gear 33 is connected to the lug 26 on the main frame platform through a chain.

[0028] A guardrail 27 is arranged around the main frame platform 24 to ensure the safety of operators.

[0029] The main frame platform is paved with a diamond plate 25, and a welding hole is reserved in the middle of the frame platform. The setting of the hole is not limited to the welding in the circumferential seam direction. The setting of the hole can be modified into various forms such as "cross-shaped" according to the actual needs of welding conditions.

[0030] It also includes a ladder 4. The ladder 4 is located on the side of one of the columns 11, connected to the connecting beam at the top and connected to the column at the bottom, facilitating personnel to go up and down. Considering that it will affect the lifting of the welding platform, no connecting piece is set in the middle part.

[0031] A notch is reserved in the guardrail 27 on the side where the ladder is provided to facilitate personnel to go up and down.

[0032] The front and rear columns of the gantry upright frame 1 are reinforced by a support 15. The gantry upright frame 1 and the connecting beam 14 are reinforced by a diagonal brace 17. The parts not described in the present utility model all belong to the conventional technical means in the field and will not be elaborated here.

[0033] To facilitate the movement of the welding lifting platform, lockable universal wheels are installed under the bottom connecting beam 12 of the gantry upright frame, which can move in all directions and can be locked and fixed at any time.

Claims

1. A movable lifting platform for circumferential welding of wind power tower barrels, characterized in that: It includes a welding platform, a lifting device, and two left and right gantry frames. The tops of the two left and right gantry frames are connected by a connecting beam, and both ends of the welding platform are slidably connected to the gantry frames; the gantry frame includes a top connecting beam, a bottom connecting beam, and two front and rear columns. The tops of the two front and rear columns are connected by the top connecting beam, and the bottoms of the two front and rear columns are connected by the bottom connecting beam; the lifting device is installed on the top connecting beam and is used to drive the welding platform to move up and down; lockable universal wheels are installed below the bottom connecting beam; the welding platform includes a main frame platform. Horizontal limit arms extend outward at the front and rear ends of the upper part of the main frame platform. Front limit guide wheels are installed on the horizontal limit arms, and rear limit guide wheels are installed at the front and rear ends of the middle of the main frame platform. The front limit guide wheels and the rear limit guide wheels are respectively located on both sides of the columns.

2. The movable wind power tower circumferential seam welding lifting platform according to claim 1, characterized in that: Lifting lugs are respectively arranged at the front and rear ends of the tops of the left and right sides of the main frame platform.

3. The movable lifting platform for circumferential welding of wind power tower barrels according to claim 2, wherein: The lifting device includes a lifting motor fixed in the middle of the top connecting beam. Sprocket supports are respectively arranged at both ends of the top connecting beam. Gears are arranged on the sprocket supports. The two gears are connected by a synchronous transmission shaft. The synchronous transmission shaft is in transmission connection with the driving wheel of the lifting motor. The gears are connected to the lifting lugs on the main frame platform through chains.

4. The movable lifting platform for circumferential welding of wind power tower barrels according to claim 1, characterized in that: A guardrail is arranged around the main frame platform.

5. The movable lifting platform for circumferential welding of wind power tower barrels according to claim 1, wherein: A checker plate is laid on the main frame platform, and a welding hole is reserved in the middle of the frame platform.

6. The movable lifting platform for circumferential welding of wind power tower barrels according to claim 4, wherein: It includes a ladder, and the ladder is located on the side of one of the columns.

7. The movable lifting platform for circumferential seam welding of wind power tower barrels according to claim 4, wherein: A reserved notch is provided in the guardrail on the side where the ladder is provided.

8. The movable lifting platform for circumferential welding of wind power tower barrels according to claim 1, wherein: The two front and rear columns of the gantry frame are reinforced by supports.

9. The movable lifting platform for circumferential welding of wind power tower barrels according to claim 1, wherein: The gantry frame and the connecting beam are reinforced by diagonal braces.

Images