Wind power tower door frame die

Abstract

The utility model relates to the technical field of wind power towers, in particular to a wind power tower door frame die. The utility model provides a wind power tower door frame die which comprises an upper die and a lower die, and the lower die comprises a lower die base and a bearing assembly. By adjusting the positions of the upper die and the lower die, the arc-shaped protruding body of the upper die and the first arc-shaped groove body of the lower die are located on the same longitudinal central axis. And under the cooperation of the upper die and the lower die, the door frame base material is stamped into a preset shape. In the stamping process, the door frame base metal moves from the two sides of the first arc-shaped groove body to the middle of the first arc-shaped groove body, and the lower surface of the base metal and the outer circular face of the rotating shaft move relatively. As the rotating shaft rolls relative to the door frame base material, the dynamic friction between the rotating shaft and the door frame base material is rolling friction. Compared with the mode that the door frame base material directly slides on the surface of the lower die, the friction force borne by the door frame base material in the moving process can be reduced by arranging the bearing assembly, and then damage to the door frame base material is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power towers, in particular to a wind power tower door frame mould. Background Art

[0002] The cross-section of the current wind turbine tower door frame is generally elliptical. When making the door frame of the wind turbine tower, a stamping device and a mold are required. The mold includes an upper mold and a lower mold, and the upper mold and the lower mold are adapted. When in use, the base material is placed on the lower mold, and then the power mechanism of the stamping device is used to insert the upper mold into the lower mold, and the base material is stamped into a semi-elliptical shape. Although the above stamping method can improve the efficiency of door frame pressing, the door frame base material will be damaged at the place where the door frame base material contacts the lower mold during the pressing process. Utility Model Content

[0003] In order to solve the problems and shortcomings existing in the prior art, the utility model provides a wind turbine tower door frame mold, which reduces the friction force on the parent material when it moves during the stamping process by improving the structure of the mold, thereby reducing the damage to the parent material caused by the stamping process, thereby improving the processing quality.

[0004] Specifically, the utility model provides a wind power tower door frame mold, comprising an upper mold and a lower mold; the lower mold comprises:

[0005] A lower die base, wherein a first arc-shaped groove body is arranged on the top of the lower die base;

[0006] A bearing assembly, wherein there are at least two bearing assemblies, and the bearing assemblies are arranged on both sides of the first arc-shaped groove body; the bearing assembly comprises a rotating shaft, a bearing, and a bearing seat, and the bearing assembly is connected to the lower die seat, and the bearing passes through both sides of the lower die seat, and the axis of the bearing is parallel to the axis of the first arc-shaped groove body; the horizontal plane where the top end of the bearing is located is higher than the horizontal plane where the top end of the first arc-shaped groove body is located;

[0007] The upper die is arranged above the lower die, and an arc-shaped protrusion is arranged at the bottom of the upper die. The arc-shaped protrusion and the first arc-shaped groove are arranged opposite to each other, and the arc-shaped protrusion can cooperate with the first arc-shaped groove to stamp and form the door frame mother material.

[0008] Optionally, the outer periphery of the bearing of the bearing assembly is made of flexible material.

[0009] Optionally, a second arc-shaped groove body is provided on the top of the lower die seat, and the second arc-shaped groove body is arranged corresponding to the bearing assembly to accommodate the bearing.

[0010] Optionally, the flexible material is rubber.

[0011] Optionally, the lower mold further includes a pushing device and a backrest; the pushing device and the backrest are respectively arranged on different sides of the lower mold base.

[0012] Optionally, the pushing device is a ball screw;

[0013] The lower die also includes a guide rail, and the guide rail and the ball screw are correspondingly arranged so that the ball screw moves along the length direction of the guide rail.

[0014] Optionally, first ribs are arranged on both sides of the first arc-shaped groove body, and a plurality of the first ribs are arranged in parallel along the length direction of the first arc-shaped groove body.

[0015] Optionally, the upper die includes a pressure-bearing platform and a second rib plate;

[0016] The pressure-bearing platform is located at the uppermost end of the upper mold to receive and transmit the pressure applied from the outside;

[0017] The top end of the second rib is connected to the pressure-bearing platform, and the bottom end of the second rib is tangent to the two side surfaces of the arc-shaped protrusion; a plurality of the second ribs are arranged in parallel.

[0018] Optionally, a second reinforcing rib is arranged between every two adjacent second rib plates.

[0019] Optionally, the bearing seat is connected to the lower die seat by bolts.

[0020] In the wind power tower door frame mold of the utility model, the positions of the upper mold and the lower mold are adjusted so that the arc-shaped protrusion of the upper mold and the first arc-shaped groove body of the lower mold are located on the same longitudinal central axis. After the door frame mother material is placed between the upper mold and the lower mold, external pressure is applied to the upper mold, and the upper mold moves downward under the action of the external pressure to form a stamping on the door frame mother material. With the cooperation of the upper mold and the lower mold, the door frame mother material is stamped into a pre-set shape. During the stamping process, the door frame mother material moves from both sides of the first arc-shaped groove body to the middle of the first arc-shaped groove body. When the door frame mother material moves, the lower surface of the mother material and the outer cylindrical surface of the rotating shaft move relative to each other. Because the rotating shaft rolls relative to the door frame mother material, the dynamic friction between the rotating shaft and the door frame mother material is rolling friction. Compared with the door frame mother material directly sliding on the surface of the lower mold, the provision of a bearing assembly can reduce the friction force to which the door frame mother material is subjected during the movement, thereby reducing the damage to the door frame mother material.

[0021] Based on the detailed description of the specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other purposes, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0023] Figure 1 is a top view of a lower mold according to an embodiment of the utility model;

[0024] Figure 2 This is a front view of a lower mold according to an embodiment of the utility model;

[0025] Figure 3 It is a left view of a lower mold according to an embodiment of the utility model;

[0026] Figure 4 This is a front view of an upper mold according to an embodiment of the utility model;

[0027] Figure 5 It is a structural diagram of a lower mold according to an embodiment of the utility model;

[0028] Figure 6 It is a left view of an upper mold according to an embodiment of the utility model. DETAILED DESCRIPTION

[0029] Refer to the following Figures 1 to 6 To describe a top view of a lower mold of a wind turbine tower door frame mold in an embodiment of the present utility model. In the description of this embodiment, it should be understood that the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0030] In the description of the present embodiment, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0031] Figure 1 FIG. 1 is a top view of the lower mold of a wind turbine tower door frame mold according to an embodiment of the utility model. Figure 1 As shown, combined with Figures 2 to 6 The utility model provides a wind power tower door frame mold including an upper mold and a lower mold. The lower mold 100 includes a lower mold base and a bearing assembly 140, and a first arc-shaped groove body 180 is arranged on the top of the lower mold base. There are at least two bearing assemblies 140, and the bearing assemblies 140 are arranged on both sides of the first arc-shaped groove body 180. The bearing assembly 140 includes a rotating shaft 141, a bearing 142, and a bearing seat 143, and the bearing assembly 140 is connected to the lower mold base; the rotating shaft 141 passes through both sides of the lower mold base, and the axis of the rotating shaft 141 is parallel to the axis of the first arc-shaped groove body 180. The horizontal plane where the top end of the rotating shaft 141 is located is higher than the horizontal plane where the top end of the first arc-shaped groove body 180 is located. The upper mold 200 is arranged above the lower mold 100, and an arc-shaped protrusion 210 is arranged at the bottom of the upper mold 200. The arc-shaped protrusion 210 and the first arc-shaped groove 180 are arranged opposite to each other, and the arc-shaped protrusion 210 can cooperate with the first arc-shaped groove 180 to stamp and form the door frame mother material.

[0032] Specifically, in the present embodiment, the working process of the wind turbine tower door frame mold includes: first, adjusting the positions of the upper mold 200 and the lower mold 100 so that the arc-shaped protrusion 210 of the upper mold 200 and the first arc-shaped groove body 180 of the lower mold 100 are located on the same longitudinal central axis. Secondly, the door frame mother material is placed between the upper mold 200 and the lower mold 100. Thirdly, external pressure is applied to the upper mold 200, and the upper mold 200 moves downward under the action of external pressure to stamp the door frame mother material. During the stamping process, the door frame mother material moves from both sides of the first arc-shaped groove body 180 to the middle of the first arc-shaped groove body 180. Finally, with the cooperation of the upper mold 200 and the lower mold 100, the door frame mother material is stamped into a preset shape.

[0033] Under the premise that the two objects in contact with each other are constant, the friction coefficient of rolling friction is smaller than that of sliding friction, and rolling friction can also convert energy into rotational kinetic energy, further reducing the magnitude of the friction between the two objects in contact with each other. The friction between objects is reduced, the resistance to relative displacement of objects becomes smaller, and the damage to the surface of objects is reduced.

[0034] In this embodiment, when the door frame mother material moves, the lower surface of the mother material and the outer cylindrical surface of the rotating shaft 141 move relative to each other. Because the rotating shaft 141 rolls relative to the door frame mother material, the dynamic friction between the rotating shaft 141 and the door frame mother material is rolling friction. Compared with the door frame mother material directly sliding on the surface of the lower mold 100, the provision of the bearing assembly 140 can reduce the friction force on the door frame mother material during the movement process, thereby reducing the damage to the door frame mother material.

[0035] In some embodiments of the present invention, the material of the rotating shaft 141 is a metal material such as stainless steel, copper alloy, etc. In this embodiment, the rotating shaft 141 made of metal material has the advantages of high strength, wear resistance and low price.

[0036] In some other embodiments of the present invention, the material of the rotating shaft 141 is Cr12. Cr12 is an alloy tool steel with good hardenability and good wear resistance.

[0037] In some embodiments of the present invention, the outer circumference of the rotating shaft 141 is made of a flexible material. In other words, a layer of flexible material is coated on the outer circumference of the rotating shaft 141. That is to say, during the working process of the mold, the door frame base material is in contact with the flexible material.

[0038] In this embodiment, a flexible material is used to cover the outer circumferential surface of the rotating shaft 141. Since the flexible material has a relatively low hardness, when it contacts the door frame base material, the damage to the door frame base material is further reduced.

[0039] Furthermore, in some embodiments of the present invention, the flexible material is rubber.

[0040] Of course, in other embodiments of the present invention, the flexible material may be resin, or other flexible materials that are not easily deformed.

[0041] In some other embodiments of the present invention, a second arc-shaped groove body 190 is disposed on the top of the lower mold base. The second arc-shaped groove body 190 is disposed corresponding to the bearing assembly 140 to partially accommodate the rotating shaft 141 .

[0042] Specifically, the lower die seat is provided with second arc-shaped groove bodies 190 having the same number as the bearing assemblies 140, the inner space of the second arc-shaped groove body 190 can partially accommodate the rotating shaft 141, and the bearing assemblies 140 can rotate freely. The top of the second arc-shaped groove body 190 is connected to the top of the first arc-shaped groove body 180.

[0043] In this embodiment, the bearing assembly 140 is partially accommodated in the second arc-shaped groove body 190, which lowers the center of gravity of the rotating shaft 141 and increases the stability of the mold during operation.

[0044] Of course, in other embodiments of the present invention, the groove body disposed on the top of the lower die seat corresponding to the bearing assembly 140 may also be square or other shapes. The groove body is disposed so as to partially accommodate the rotating shaft 141 and not affect the rotation of the rotating shaft 141.

[0045] In some embodiments of the present invention, the lower mold 100 further includes a pusher 120 and a backer 130. The pusher 120 and the backer 130 are respectively arranged on different sides of the lower mold base. A plurality of backers 130 are arranged on the same straight line, and the connecting line of the plurality of backers 130 is perpendicular to the axis of the first arc-shaped groove body 180. The distance between the pusher 120 and the backer 130 can be adjusted by adjusting the pusher 120.

[0046] Specifically, when the door frame base material is placed on the lower mold 100, the position of the door frame base material is adjusted by adjusting the pushing device 120, so that one side of the door frame base material is in contact with the backrest 130 and the other side is in contact with the pushing device 120. At this time, the backrest device and the backrest 130 together limit the moving direction of the door frame base material, so that the door frame base material can only move in a direction perpendicular to the first arc-shaped groove body 180.

[0047] In this embodiment, the backrest 130 and the pusher 120 limit the moving direction of the door frame base material, avoiding displacement of the door frame base material in other directions during the stamping process, and controlling the size and precision of the finished product. At the same time, because the spacing between the backrest 130 and the pusher 120 is adjustable, the mold can process door frame base materials of different widths.

[0048] It should be noted that there are at least two backrests 130, which are respectively disposed on both sides of the first arc-shaped groove body 180. Of course, there are also at least two pushers 120, which are respectively disposed on both sides of the first arc-shaped groove body 180. The number of backrests 130 and pushers 120 can be the same or different.

[0049] Further, in some other embodiments of the present utility model, the pushing device 120 is a manual pushing device 120. In this embodiment, the manual pushing device 120 is used for adjustment, and the adjustment process is more controllable.

[0050] In some embodiments of the present invention, the driving device 120 is a ball screw. As a common transmission element, the ball screw is widely used in tool machinery and precision machinery, and has the advantages of low friction loss, extremely small starting torque, high precision, reversible transmission, low energy consumption, and simple maintenance.

[0051] In this embodiment, a ball screw is selected as the driving device 120, which is not only easy to operate but also reduces maintenance costs.

[0052] In some embodiments of the utility model, a baffle 121 is provided at one end of the rolling screw near the backrest 130 , and the baffle 121 contacts the upper surface of the lower mold base. When the rolling screw is rotated, the baffle 121 moves in a direction parallel to the axis of the first arc-shaped groove body 180 .

[0053] In this embodiment, a baffle 121 is provided at one end of the rolling screw to increase the contact surface between the pushing device 120 and the door frame base material.

[0054] In a further embodiment of the present invention, the lower mold 100 further includes a guide rail 150, and the guide rail 150 and the ball screw are correspondingly arranged so that the ball screw moves along the length direction of the guide rail 150. That is, the number of the guide rails 150 is the same as the number of the ball screws.

[0055] Specifically, a baffle 121 is provided at one end of the rolling screw near the backrest 130, and a protrusion is provided along the axis direction of the guide rail 150 parallel to the first arc-shaped groove body 180. A baffle 121 is provided at one end of the ball screw near the backrest 130, and a third groove body is provided on the side of the baffle 121 in contact with the lower die seat, and the third groove body is used in conjunction with the guide rail 150 to control the direction of the rolling screw. When adjusting the ball screw, the ball screw moves away from or close to the backrest 130 along the guide rail 150.

[0056] In this embodiment, by setting the guide rail 150, the ball screw is controlled to move only in a direction parallel to the axis of the first arc-shaped groove body 180, thereby preventing the direction of the ball screw from being offset when adjusting the ball screw.

[0057] Of course, in some other embodiments of the present invention, the guide rail 150 may also be a groove body arranged on the surface of the lower mold base, and a protrusion corresponding to the guide rail 150 is correspondingly arranged on the baffle 121.

[0058] In some embodiments of the present invention, first ribs 110 are disposed on both sides of the first arc-shaped groove body 180 , and a plurality of first ribs 110 are disposed in parallel along the length direction of the first arc-shaped groove body 180 .

[0059] In some embodiments of the utility model, the lower die base includes a plurality of first ribs 110 arranged in parallel, and a first groove and two second grooves are arranged on the first ribs 110, the first groove and the second groove are arranged through along the thickness direction of the first ribs 110, and the second grooves are symmetrically arranged on both sides of the first groove. The lower die base also includes a panel 170, and the panel 170 is respectively arranged at the upper end and the lower end of the first rib 110, connecting the plurality of first ribs 110 arranged in parallel into a whole with both the upper end face and the lower end face sealed. The plurality of second grooves are connected through the panel 170 to form a second groove body 19. In this embodiment, by arranging a plurality of first ribs 110 arranged in parallel, the space between adjacent first ribs 110 is hollow, which greatly saves the materials used in making the mold and achieves cost savings.

[0060] In a further embodiment of the present invention, a first reinforcing rib 160 is disposed between every two adjacent first ribs 110. In this embodiment, the first reinforcing rib 160 is disposed between every two adjacent first ribs 110, which can improve the compression resistance of the upper mold 200.

[0061] In this embodiment, the first reinforcing ribs 160 may be arranged on the same horizontal plane or may not be arranged on the same horizontal plane.

[0062] In some embodiments of the present invention, the upper mold 200 includes a pressure platform 230 and a second rib 220. The pressure platform 230 is located at the uppermost end of the upper mold 200 to receive and transmit the pressure applied from the outside. The top end of the second rib 220 is connected to the pressure platform 230, and the bottom end of the second rib 220 is tangent to the two side surfaces of the arc-shaped protrusion 210. A plurality of the second ribs 220 are arranged in parallel.

[0063] That is, the upper mold 200 has a plurality of second ribs 220 and a pressure platform 230 arranged in parallel. The upper end of the second rib 220 is connected to the pressure platform 230, and the lower end of the second rib 220 is tangent to the side of the arc-shaped protrusion 210. The plurality of second ribs 220 arranged in parallel, the pressure platform 230 and the arc-shaped protrusion 210 together constitute the upper mold 200. When the mold is working, external force acts on the pressure platform 230, and the pressure on the pressure platform 230 is transmitted to the arc-shaped protrusion 210 through the plurality of second ribs 220.

[0064] In this embodiment, a plurality of second ribs 220 are arranged in parallel, and the spaces between adjacent second ribs 220 are hollow, which greatly saves the materials used in making the mold and achieves cost savings.

[0065] In a further embodiment of the present invention, the width of the top end of the second rib 220 is greater than the width of the bottom end, which means that the maximum cross-sectional area of ​​the arc-shaped protrusion 210 is smaller than the area of ​​the pressure-bearing platform 230 .

[0066] In this embodiment, the maximum cross-sectional area of ​​the arc-shaped protrusion 210 is smaller than the area of ​​the pressure-bearing platform 230 , so that the pressure of the arc-shaped protrusion 210 is greater than the pressure on the pressure-bearing platform 230 .

[0067] In a further embodiment of the present invention, a second reinforcing rib 240 is disposed between every two adjacent second ribs 220. In this embodiment, the second reinforcing rib 240 is disposed between every two adjacent second ribs 220, which can improve the compression resistance of the upper mold 200.

[0068] In this embodiment, the second reinforcing ribs 240 may be arranged on the same horizontal plane or may not be arranged on the same horizontal plane.

[0069] In a further embodiment of the utility model, the bearing seat 143 is connected to the lower die seat by bolts. In this embodiment, the bearing seat 143 is connected to the lower die seat by bolts, which is convenient for disassembly and maintenance.

[0070] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the contents disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A wind power tower door frame mold, comprising an upper mold and a lower mold, characterized in that: The lower die comprises: A lower die base, wherein a first arc-shaped groove body is arranged on the top of the lower die base; A bearing assembly, wherein there are at least two bearing assemblies, and the bearing assemblies are arranged on both sides of the first arc-shaped groove body; the bearing assembly comprises a rotating shaft, a bearing, and a bearing seat, and the bearing assembly is connected to the lower die seat, and the bearing passes through both sides of the lower die seat, and the axis of the bearing is parallel to the axis of the first arc-shaped groove body; the horizontal plane where the top end of the bearing is located is higher than the horizontal plane where the top end of the first arc-shaped groove body is located; The upper die is arranged above the lower die, and an arc-shaped protrusion is arranged at the bottom of the upper die. The arc-shaped protrusion and the first arc-shaped groove are arranged opposite to each other, and the arc-shaped protrusion can cooperate with the first arc-shaped groove to stamp and form the door frame mother material.

2. The wind turbine tower door frame mold according to claim 1, characterized in that: The outer periphery of the bearing of the bearing assembly is made of flexible material.

3. The wind power tower door frame mold according to claim 1, characterized in that: A second arc-shaped groove body is arranged on the top of the lower die seat, and the second arc-shaped groove body is arranged corresponding to the bearing assembly to accommodate the bearing.

4. The wind power tower door frame mold according to claim 2, characterized in that: The flexible material is rubber.

5. The wind power tower door frame mold according to claim 1 or 3, characterized in that: The lower die also includes a pushing device and a backrest; the pushing device and the backrest are respectively arranged on different sides of the lower die base.

6. The wind power tower door frame mold according to claim 5, characterized in that: The pushing device is a ball screw; The lower die also includes a guide rail, and the guide rail and the ball screw are correspondingly arranged so that the ball screw moves along the length direction of the guide rail.

7. The wind power tower door frame mold according to claim 1, characterized in that: First ribs are arranged on both sides of the first arc-shaped groove body, and a plurality of the first ribs are arranged in parallel along the length direction of the first arc-shaped groove body.

8. The wind power tower door frame mold according to claim 1, characterized in that: The upper die comprises a pressure-bearing platform and a second rib plate; The pressure-bearing platform is located at the uppermost end of the upper mold to receive and transmit the pressure applied from the outside; The top end of the second rib is connected to the pressure-bearing platform, and the bottom end of the second rib is tangent to the two side surfaces of the arc-shaped protrusion; a plurality of the second ribs are arranged in parallel.

9. The wind power tower door frame mold according to claim 8, characterized in that: A second reinforcing rib is arranged between every two adjacent second rib plates.

10. The wind power tower door frame mold according to claim 1, characterized in that: The bearing seat is connected to the lower die seat by bolts.

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