Preheating tool for welding wind power tower door frame

Abstract

The preheating tool comprises a base, a servo motor and a mounting frame, trundles are fixedly mounted at the lower end of the base, a mounting plate is integrally mounted at the upper end of the base, a supporting rod is rotationally arranged at the outer end of the mounting plate, and an adjusting rod is rotationally mounted at the upper end of the supporting rod; according to the preheating tool for welding of the wind power tower tube door frame, the position of the heating baking gun can be adjusted to be more matched with the position of a weld bead, simultaneous preheating of the whole door frame weld bead area can be achieved, and the preheating efficiency is improved. Uniform preheating of a whole door frame welding bead can be achieved, labor force of constructors can be reduced, working efficiency is improved, the height of a heating baking gun can be conveniently adjusted, moving and using are convenient, operation is more convenient, the device can be used for preheating a door frame before welding, and heat preservation and slow cooling of a door frame welding seam after welding can be achieved by adjusting the flame size.

Description

Technical Field

[0001] The invention relates to the field of preheating tooling for welding a wind power tower door frame, and in particular to a preheating tooling for welding a wind power tower door frame. Background Art

[0002] In recent years, with the development of large-scale design technology of wind power equipment, the capacity of wind power units has been continuously increasing. The capacity of onshore wind power units has reached 10MW, and the capacity of offshore wind power units has reached 16MW. The design thickness of the steel plates used in the tower is getting thicker and thicker. At the same time, due to the development needs of extremely cold climate conditions and offshore service, thicker specifications and larger single weight steel plates are required for tower production. The cost of raw materials has always occupied a large proportion of the design cost. Through the design of raw materials, the existing Q355 material is upgraded to Q420 material, which greatly reduces the use of steel. With the introduction and use of new raw materials, coupled with the welding of high-power tower thick plates, preheating of the parent material before welding has become an important quality control point in the entire tower production process.

[0003] Since the steel plate at the door frame welding position is thicker, and the door frame welding adopts carbon dioxide gas shielded welding, the single-pass welding filling volume is small, the welding time is long, and the skill level of the welders is high, the parent material must be fully preheated before welding to reduce and eliminate some internal quality defects of the weld. Therefore, we propose a preheating tool for wind turbine tower door frame welding to solve the above problems. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a preheating tool for welding wind turbine tower door frames, which can solve the technical problems that the steel plate at the door frame welding position is relatively thick, and the door frame welding adopts carbon dioxide gas shielded welding, the single-pass welding filling volume is small, the welding time is long, and the skill level of the welders is high. The base material must be fully preheated before welding to reduce and eliminate some internal quality defects of the weld.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a base, a servo motor and a mounting frame, A caster is fixedly mounted on the lower end of the base, a mounting plate is integrally mounted on the upper end of the base, a support rod is rotatably mounted on the outer end of the mounting plate, and an adjustment rod is rotatably mounted on the upper end of the support rod; The output shaft of the servo motor is fixedly mounted with a threaded screw, the outer end of the threaded screw is threadedly connected with a sliding member, and the outer end of the sliding member is rotatably mounted with the lower end of the adjusting rod; A support plate is fixedly installed on the outer end of the mounting frame, an adjustment plate is slidably installed on the outer end of the support plate, a first mounting piece is fixedly installed on the outer end of the adjustment plate, a second mounting piece is tightly fitted on the outer end of the first mounting piece, the inner ends of the first mounting piece and the second mounting piece are threadedly connected with a first bolt, a seamless gas channel steel pipe is slidably installed on the outer wall of the first mounting piece, and a heating gun is equidistantly fixedly installed on the inner end of the seamless gas channel steel pipe.

[0006] As a preferred technical solution of the present invention, a mounting platform is fixedly mounted on the outer wall of the base, and the servo motor is fixedly mounted on the outer end of the mounting platform.

[0007] As a preferred technical solution of the present invention, the threaded screw is rotatably mounted on the upper end of the mounting platform, and the sliding member is slidably mounted on the outer end of the mounting platform.

[0008] As a preferred technical solution of the present invention, the inner end of the support plate is provided with adjustment holes at equal intervals, and the inner ends of the adjustment holes are threadedly connected with second bolts.

[0009] As a preferred technical solution of the present invention, the second bolt is threadedly connected to the inner end of the adjustment plate, and the adjustment plate is arranged on the outer side of the heating gun.

[0010] As a preferred technical solution of the present invention, the seamless gas channel steel pipe is slidably installed with the second mounting member, and a gas inlet is fixedly installed at the inner end of the seamless gas channel steel pipe.

[0011] As a preferred technical solution of the present invention, the servo motor is arranged on the upper side of the base, and two groups of the servo motor are symmetrically arranged.

[0012] As a preferred technical solution of the present invention, a connecting piece is rotatably mounted on the upper end of the adjusting rod, and the upper surface of the connecting piece is fixedly mounted on the lower end of the mounting frame.

[0013] Compared with the prior art, the present invention can achieve the following beneficial effects: 1. The heating guns are evenly distributed at equal distances, and the installation positions of the first mounting piece and the second mounting piece can be adjusted so that the positions of the heating guns are more consistent with the weld positions, and the entire door frame weld area can be preheated simultaneously, and the entire door frame weld can be preheated evenly. After being set up and the preheating position is adjusted, the baking and preheating work can be carried out as long as the ignition is turned on, and there is no need for real-time operation by the construction personnel, which can reduce the labor of the construction personnel and improve work efficiency.

[0014] 2. The casters on the base can be raised to move the mounting frame. The servo motor can be used to control the rotation of the adjusting rod and the supporting rod to adjust the height of the heating gun. It is suitable for different processing conditions and is convenient for adjusting the height of the heating gun. It is easy to move and use, and the operation is more convenient. It can not only be used to preheat the door frame before welding, but also to adjust the flame size to achieve heat preservation and slow cooling of the door frame weld after welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the preheating tooling used for welding the wind power tower door frame of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the preheating tool used for welding the wind power tower door frame of the present invention from a side view; Figure 3 It is a schematic diagram of the right side structure of the preheating tool used for welding the wind power tower door frame of the present invention; Figure 4 It is a schematic diagram of the upper structure of the preheating tooling used for welding the wind power tower door frame of the present invention; Figure 5 It is a front view structural schematic diagram of the preheating tooling used for welding of wind power tower door frame of the present invention; Figure 6 It is a schematic diagram of the top view of the structure of the preheating tooling used for welding the wind power tower door frame of the present invention; Among them: 1. Base; 2. Servo motor; 3. Mounting frame; 4. Casters; 5. Mounting plate; 6. Support rod; 7. Adjustment rod; 8. Sliding part; 9. Threaded screw; 10. Mounting table; 11. Connecting part; 12. Support plate; 13. Adjustment plate; 14. First mounting part; 15. Second mounting part; 16. First bolt; 17. Seamless gas channel steel pipe; 18. Heating gun; 19. Adjustment hole; 20. Second bolt; 21. Gas inlet. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0017] Example Please refer to Figure 1-6 As shown, the present invention provides a preheating tool for welding a wind power tower door frame. A caster 4 is fixedly mounted on the lower end of the base 1, a mounting plate 5 is integrally mounted on the upper end of the base 1, a support rod 6 is rotatably mounted on the outer end of the mounting plate 5, an adjusting rod 7 is rotatably mounted on the upper end of the supporting rod 6, a connecting piece 11 is rotatably mounted on the upper end of the adjusting rod 7, and the upper surface of the connecting piece 11 is fixedly mounted on the lower end of the mounting frame 3, which is convenient to move and flexible to use; The output shaft of the servo motor 2 is fixedly installed with a threaded screw 9, the outer end of the threaded screw 9 is threadedly connected with a sliding member 8, the outer end of the sliding member 8 is rotatably connected with the lower end of the adjusting rod 7, the outer wall of the base 1 is fixedly installed with a mounting platform 10, and the servo motor 2 is fixedly installed at the outer end of the mounting platform 10. The threaded screw 9 is rotatably installed on the upper end of the mounting platform 10, and the sliding member 8 is slidably installed on the outer end of the mounting platform 10. The servo motor 2 is arranged on the upper side of the base 1, and the servo motor 2 is symmetrically arranged in two groups, which is convenient for adjusting the height of the heating gun 18, convenient for movement and use, and more convenient to operate. It can not only be used for preheating the door frame before welding, but also can adjust the size of the flame to achieve heat preservation and slow cooling of the door frame weld after welding.

[0018] The outer end of the mounting frame 3 is fixedly mounted with a support plate 12, and the outer end of the support plate 12 is slidably mounted with an adjustment plate 13. The outer end of the adjustment plate 13 is fixedly mounted with a first mounting member 14, and the outer end of the first mounting member 14 is closely fitted with a second mounting member 15. The inner ends of the first mounting member 14 and the second mounting member 15 are threadedly connected with a first bolt 16. A seamless gas passage steel pipe 17 is slidably mounted on the outer wall of the first mounting member 14, and a heating gun 18 is fixedly mounted equidistantly on the inner end of the seamless gas passage steel pipe 17. Adjustment holes 19 are equidistantly opened at the inner end of the support plate 12, and the inner end of the adjustment hole 19 is threadedly connected with a second bolt 20. The second bolt 20 is threadedly connected to the inner end of the adjustment plate 13, and the adjustment plate 13 is arranged on the outer side of the heating gun 18. The seamless gas channel steel pipe 17 is slidably installed with the second mounting member 15, and a gas inlet 21 is fixedly installed at the inner end of the seamless gas channel steel pipe 17. The installation positions of the first mounting member 14 and the second mounting member 15 can be adjusted to make the position of the heating gun 18 more consistent with the weld position, which can reduce the labor of construction workers and improve work efficiency.

[0019] Specific working principle: like Figure 1 , Figure 2 , Figure 4 and Figure 6As shown, when the preheating tooling for welding the wind power tower door frame is used, due to the irregular shape of the tower door frame, most of them are elliptical. In order to ensure a good preheating effect, the position of the heating gun 18 can be adjusted according to the shape of the tower door frame, so that the heating gun 18 ensures that the heating area covers the door frame weld and can heat the door frame as a whole. At the same time, the tooling needs to be optimized so that the tooling can be convenient for construction personnel to operate, and ultimately achieve the effect of saving time and effort. When adjusting, according to the shape and size of the seamless gas channel steel pipe 17, the positions of the first mounting member 14 and the second mounting member 15 are adjusted to the same as the installation position of the seamless gas channel steel pipe 17. Correspondingly, when adjusting, the second bolt 20 is removed from the adjusting hole 19 and the inner end of the adjusting plate 13, and then the adjusting plate 13 can be slid on the outer end of the support plate 12, and the adjusting plate 13 is adjusted to the desired position, and then the second bolt 20 is used again to fix it, and the positions of each first mounting member 14 and the second mounting member 15 are adjusted to the desired positions, and then the seamless gas channel steel pipe 17 is placed to a position that fits the first mounting member 14, and then the second mounting member 15 is covered on the outer wall of the seamless gas channel steel pipe 17, and the second mounting member 15 is fixedly connected to the first mounting member 14 using the first bolt 16, and the installation of the seamless gas channel steel pipe 17 is completed; like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, when in use, the base 1 is pushed, the casters 4 are rotated, and the mounting frame 3 is pushed to the lower side of the wind power tower door frame that needs to be preheated for welding, and is connected to the external gas delivery equipment through the gas inlet 21, and then the height of the heating gun 18 is adjusted. When adjusting the height of the heating gun 18, the servo motor 2 is started, and the output shaft of the servo motor 2 drives the threaded screw 9 to rotate on the upper end of the mounting platform 10 when rotating. When the threaded screw 9 rotates, it drives the sliding member 8 to slide on the upper side of the mounting platform 10. When the sliding member 8 slides in the direction of the support rod 6, the sliding member 8 drives the lower end of the adjusting rod 7 to move outward, and the upper end of the adjusting rod 7 stands up, so that the mounting frame is realized. 3 is raised, when the servo motor 2 drives the threaded screw 9 to rotate in the opposite direction, the sliding member 8 moves in the direction of the servo motor 2, the lower end of the adjusting rod 7 moves inwardly driven by the sliding member 8, and the upper end of the adjusting rod 7 rotates in the direction of the base 1, so as to reduce the height of the mounting frame 3, adjust the mounting frame 3 and the heating gun 18 to a suitable height, so that the outer flame part of the flame from the heating tool can just heat the preheating area, so as to achieve the maximum heating temperature and the overall heating effect of the door frame, and the above completes a series of operations of the preheating tool for welding the wind tower door frame. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0020] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A preheating tool for welding a wind power tower door frame, comprising: The base (1), the servo motor (2) and the mounting frame (3) are characterized by: A caster (4) is fixedly mounted on the lower end of the base (1), a mounting plate (5) is integrally mounted on the upper end of the base (1), a support rod (6) is rotatably mounted on the outer end of the mounting plate (5), and an adjustment rod (7) is rotatably mounted on the upper end of the support rod (6); The output shaft of the servo motor (2) is fixedly mounted with a threaded screw (9), the outer end of the threaded screw (9) is threadedly connected with a sliding member (8), and the outer end of the sliding member (8) is rotatably connected with the lower end of the adjusting rod (7); A support plate (12) is fixedly mounted on the outer end of the mounting frame (3), an adjustment plate (13) is slidably mounted on the outer end of the support plate (12), a first mounting member (14) is fixedly mounted on the outer end of the adjustment plate (13), a second mounting member (15) is tightly fitted on the outer end of the first mounting member (14), a first bolt (16) is threadedly connected to the inner ends of the first mounting member (14) and the second mounting member (15), a seamless gas channel steel pipe (17) is slidably mounted on the outer wall of the first mounting member (14), and a heating gun (18) is fixedly mounted at an equal distance on the inner end of the seamless gas channel steel pipe (17).

2. A preheating tool for welding a wind turbine tower door frame according to claim 1, characterized in that: A mounting platform (10) is fixedly mounted on the outer wall of the base (1), and the servo motor (2) is fixedly mounted on the outer end of the mounting platform (10).

3. A preheating tool for welding wind turbine tower door frame according to claim 2, characterized in that: The threaded screw (9) is rotatably mounted on the upper end of the mounting platform (10), and the sliding member (8) is slidably mounted on the outer end of the mounting platform (10).

4. A preheating tool for welding a wind turbine tower door frame according to claim 1, characterized in that: Adjustment holes (19) are equidistantly formed at the inner end of the support plate (12), and second bolts (20) are threadedly connected to the inner ends of the adjustment holes (19).

5. A preheating tool for welding a wind power tower door frame according to claim 4, characterized in that: The second bolt (20) is threadedly connected to the inner end of the adjustment plate (13), and the adjustment plate (13) is arranged on the outside of the heating gun (18).

6. The preheating tool for welding wind turbine tower door frame according to claim 1, characterized in that: The seamless gas channel steel pipe (17) is slidably mounted on the second mounting member (15), and a gas inlet (21) is fixedly mounted on the inner end of the seamless gas channel steel pipe (17).

7. The preheating tool for welding wind turbine tower door frame according to claim 1, characterized in that: The servo motor (2) is arranged on the upper side of the base (1), and two groups of the servo motor (2) are symmetrically arranged.

8. The preheating tool for welding wind turbine tower door frame according to claim 1, characterized in that: A connecting piece (11) is rotatably mounted on the upper end of the adjusting rod (7), and the upper surface of the connecting piece (11) is fixedly mounted on the lower end of the mounting frame (3).

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