Iron mold sand-coated casting heating device for primary planet carrier of onshore wind generating set

Abstract

The utility model relates to an onshore wind generating set primary planet carrier swage sand-coated casting heating device which comprises a mold, an outer convex mold matched with a primary planet carrier is arranged on the mold, a first heating device is arranged on the outer convex mold, the first heating device comprises a first electromagnetic induction coil, and a second electromagnetic induction coil is arranged on the first electromagnetic induction coil. The first electromagnetic induction coil is spirally wound around the bottom of the outer male die, the two free ends of the first electromagnetic induction coil are a positive wiring electrode and a negative wiring electrode respectively, a set of first supporting columns are arranged on the periphery of the first electromagnetic induction coil, and the set of first supporting columns are annularly distributed on the periphery of the first electromagnetic induction coil. The first electromagnetic induction coil is fixedly connected with the first supporting column, the first supporting column is installed on the mold, and the mold heating device has the advantages that the universal electromagnetic induction heating coil is designed according to the shape of the mold, and rapid and uniform heating of the mold is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to a sand-coated casting heating device for an iron mold of a first-stage planetary frame of an onshore wind turbine generator set. Background Art

[0002] The first-stage planetary carrier of an onshore wind turbine generator set is large in size and adopts the traditional sand box casting method, which requires a large amount of casting sand. In order to reduce the amount of sand used, the large planetary carrier is formed by the iron sand coating casting method. The coating sand is sprayed into the cavity between the unheated molds through the sand shooting holes on the sand box through the sand shooting tube until the cavity between the molds is filled with coating sand to form a coating sand layer. The coating sand layer in the cavity is then heated by a heating device arranged below or above one side of the mold to solidify and form the coating sand layer in the cavity. Most of the original heating methods use resistance furnaces and natural gas furnaces for heating, which have a long heating time and low efficiency and cannot meet the rapid heating requirements required by the production line. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a sand-coated casting heating device for a first-stage planetary frame iron mold of an onshore wind turbine generator set to solve the problem.

[0004] To achieve the above-mentioned purpose, the technical solution of the present utility model is to design a sand-coated casting heating device for the first-stage planetary frame of an onshore wind turbine generator set, including a mold, the mold having an outer convex mold matching the first-stage planetary frame, and a first heating device provided on the outer convex mold, the first heating device including a first electromagnetic induction coil, the first electromagnetic induction coil spirally coiled at the bottom of the outer convex mold, the two free ends of the first electromagnetic induction coil respectively being positive and negative wiring electrodes, a group of first pillars being provided on the outer periphery of the first electromagnetic induction coil, a group of first pillars being arranged around the outer periphery of the first electromagnetic induction coil, the first electromagnetic induction coil being fixedly connected to the first pillars, and the first pillars being installed on the mold.

[0005] A further preferred technical solution is that a second heating device is provided on the horizontal step surface of the outer punch above the first heating device, and the second heating device includes a second electromagnetic induction coil, which is spirally wound from the outside to the inside on the horizontal step surface of the outer punch, and the two free ends of the second electromagnetic induction coil are positive and negative wiring electrodes respectively, and a group of second pillars are provided on the upper side of the second electromagnetic induction coil, and the second pillars are horizontally arranged and annularly distributed on the upper side of the first electromagnetic induction coil, and a group of second pillars are installed on a first disc, and a group of annularly arranged first brackets are provided on the lower side of the first disc, and the first brackets are connected to the mold.

[0006] A further preferred technical solution is that a third heating device is provided on the periphery of the outer punch above the second heating device, and the third heating device includes a third electromagnetic induction coil, and the third electromagnetic induction coil is spirally coiled on the upper and middle part of the outer punch, and the two free ends of the third electromagnetic induction coil are respectively positive and negative wiring electrodes, and a group of third pillars are provided on the periphery of the third electromagnetic induction coil, and a group of third pillars are arranged on the periphery of the third electromagnetic induction coil, and the third electromagnetic induction coil is fixedly connected to the third pillars, and the third pillars can be installed on the mold.

[0007] A further preferred technical solution is that a fourth heating device is provided on the top horizontal plane of the outer punch above the third heating device, and the fourth heating device includes a fourth electromagnetic induction coil, which is spirally coiled from the outside to the inside on the top horizontal plane of the outer punch, and the two free ends of the fourth electromagnetic induction coil are respectively positive and negative wiring electrodes, and a group of fourth pillars are provided on the upper side of the fourth electromagnetic induction coil, and the fourth pillars are horizontally arranged and annularly distributed on the upper side of the fourth electromagnetic induction coil, and a group of fourth pillars are installed on a second disc, and the lower side of the second disc is provided with a group of annularly arranged second brackets, and the second brackets are connected to the mold.

[0008] The advantages and beneficial effects of the utility model are: according to the shape of the mold, a universal electromagnetic induction heating coil is designed to achieve rapid and uniform heating of the mold. In conjunction with the automated production line of the intelligent casting technology plant, the mold heating is automated, the energy conversion efficiency is improved, the heating time is shortened, and the rapid heating requirements of the production line cannot be met. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is one of the axonometric drawings of the present utility model;

[0010] Figure 2 This is the second axonometric drawing of the utility model;

[0011] Figure 3 This is the third axonometric drawing of the present utility model;

[0012] Figure 4 This is one of the axonometric drawings of the utility model without a disc;

[0013] Figure 5 This is the second axonometric drawing of the utility model without a disc.

[0014] In the figure: 10, outer punch; 20, first heating device; 21, first electromagnetic induction coil; 22, first pillar; 30, second heating device; 31, first disk; 32, first bracket; 33, second pillar; 34, second electromagnetic induction coil; 40, third heating device; 41, third electromagnetic induction coil; 42, third pillar; 50, fourth heating device; 51, second disk; 52, fourth pillar; 53, fourth electromagnetic induction coil. DETAILED DESCRIPTION

[0015] The following embodiments are used to further describe the specific embodiments of the present invention in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0016] according to Figure 1-5 As shown, the first-stage planetary carrier of the onshore wind turbine generator set of the present invention is formed by an iron sand film casting method. Film sand is sprayed into the cavity between the unheated molds through the sand shooting holes on the sand box through a sand shooting tube. Then, a heating device arranged below or above one side of the mold is used to heat the film sand layer in the cavity so that the film sand layer is solidified and formed in the cavity. Most of the existing heating methods use resistance furnaces or natural gas furnaces for heating, which have a long heating time and low efficiency and cannot meet the rapid heating requirements of the production line.

[0017] The present application provides a sand-coated casting heating device for a first-stage planetary frame of an onshore wind turbine generator set, comprising a mold, wherein the mold has an outer convex mold 10 that matches the first-stage planetary frame, and a first heating device 20 is provided on the outer convex mold 10. The first heating device 20 comprises a first electromagnetic induction coil 21, and the first electromagnetic induction coil 21 is spirally wound around the bottom of the outer convex mold 10. The two free ends of the first electromagnetic induction coil 21 are respectively positive and negative wiring electrodes. In one embodiment, the first electromagnetic induction coil 21 is a copper wire or a copper tube, and is spirally wound around the bottom of the outer convex mold 10 in a 6-turn shape. The first electromagnetic induction coil 21 is formed, and a group of first pillars 22 are provided on the outer periphery of the first electromagnetic induction coil 21. The group of first pillars 22 are distributed around the outer periphery of the first electromagnetic induction coil 21. The first electromagnetic induction coil 21 is fixedly connected to the first pillars 22. The first pillars 22 can be installed on the mold to support the first electromagnetic induction coil 21. When an alternating current is loaded, the first electromagnetic induction coil 21 generates an alternating magnetic field. The alternating magnetic field is conducted through magnetic induction, and its magnetic lines of force will pass through the outer punch 10 to form a magnetic circuit, thereby heating the outer punch 10.

[0018] A second heating device 30 is provided on the horizontal step surface of the outer punch 10 above the first heating device 20. The second heating device 30 includes a second electromagnetic induction coil 34. The second electromagnetic induction coil 34 is spirally wound from the outside to the inside on the horizontal step surface of the outer punch 10. The two free ends of the second electromagnetic induction coil 34 are respectively positive and negative wiring electrodes. In one embodiment, the second electromagnetic induction coil 34 is a copper wire or a copper tube. The second electromagnetic induction coil 34 is formed by spirally winding five turns from the outside to the inside on the horizontal step surface of the outer punch 10. A group of second pillars 33 are provided on the upper side of the second electromagnetic induction coil 34. The second pillars 33 are arranged horizontally and arranged in a ring on the upper side of the first electromagnetic induction coil 34. The second electromagnetic induction coil 34 is fixedly connected to the second pillars 33. A group of second pillars 33 are installed on a first disc 31. The lower side of the first disc 31 is provided with a group of annularly arranged first brackets 32. The first brackets 32 are connected to the mold to support the second electromagnetic induction coil 34. When an alternating current is loaded, the second electromagnetic induction coil 34 generates an alternating magnetic field. The alternating magnetic field is conducted through magnetic induction, and its magnetic lines of force will pass through the outer punch 10 to form a magnetic circuit, thereby heating the outer punch 10.

[0019] A third heating device 40 is provided on the periphery of the outer punch above the second heating device 30. The third heating device 40 includes a third electromagnetic induction coil 41. The third electromagnetic induction coil 41 is spirally wound around the middle and upper part of the outer punch 10. The two free ends of the third electromagnetic induction coil 41 are respectively positive and negative wiring electrodes. In one embodiment, the third electromagnetic induction coil 41 is a copper wire or a copper tube, and is formed by spirally winding six turns around the middle and upper part of the outer punch 10. A group of third pillars 42 are provided on the periphery of the third electromagnetic induction coil 41. A group of third pillars 42 are arranged around the periphery of the third electromagnetic induction coil 41. The third electromagnetic induction coil 41 is fixedly connected to the third pillars 42. The third pillars 42 can be installed on the mold to support the third electromagnetic induction coil 41. When an alternating current is applied, the third electromagnetic induction coil 41 generates an alternating magnetic field. The alternating magnetic field is conducted through magnetic induction, and its magnetic lines of force will pass through the outer punch 10 to form a magnetic loop, thereby heating the outer punch 10.

[0020] A fourth heating device 50 is provided on the top horizontal surface of the outer punch above the third heating device 40. The fourth heating device 50 includes a fourth electromagnetic induction coil 53. The fourth electromagnetic induction coil 53 is spirally wound from the outside to the inside on the top horizontal surface of the outer punch 10. The two free ends of the fourth electromagnetic induction coil 53 are respectively positive and negative wiring electrodes. In one embodiment, the fourth electromagnetic induction coil 53 is a copper wire or a copper tube. The fourth electromagnetic induction coil 53 is formed by spirally winding five turns from the outside to the inside on the top horizontal surface of the outer punch 10. A group of fourth pillars 52 are provided on the upper side of the fourth electromagnetic induction coil 53. The fourth pillar 52 is arranged horizontally and is arranged on the upper side of the fourth electromagnetic induction coil 53. The fourth electromagnetic induction coil 53 is fixedly connected to the fourth pillar 52. A group of the fourth pillars 52 are installed on a second disc 51. The lower side of the second disc 5 is provided with a group of annularly arranged second brackets. The second brackets are connected to the mold to support the fourth electromagnetic induction coil 53. When an alternating current is loaded, the fourth electromagnetic induction coil 53 generates an alternating magnetic field. The alternating magnetic field is conducted through magnetic induction, and its magnetic lines of force will pass through the outer punch 10 to form a magnetic circuit, thereby heating the outer punch 10.

[0021] The sand shooting system is turned on, and the molding sand is injected into the cavity formed by the outer punch 10 through the sand shooting hole pressure. The electromagnetic induction coil generates an alternating magnetic field. The alternating magnetic field is transmitted through magnetic induction, and its magnetic lines of force pass through the outer punch 10 to form a magnetic circuit, thereby heating the outer punch 10 to solidify the molding sand. After heating is completed, a sand shell for pouring is formed.

[0022] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A sand-coated iron mold casting and heating device for a first-stage planetary carrier of an onshore wind turbine generator set, comprising a mold having an outer convex mold matching the first-stage planetary carrier, characterized in that: A first heating device is provided on the outer convex mold, and the first heating device includes a first electromagnetic induction coil, which is spirally coiled on the bottom of the outer convex mold, and the two free ends of the first electromagnetic induction coil are respectively positive and negative wiring electrodes. A group of first pillars are provided on the periphery of the first electromagnetic induction coil, and a group of first pillars are distributed on the periphery of the first electromagnetic induction coil. The first electromagnetic induction coil is fixedly connected to the first pillars, and the first pillars are connected to the mold.

2. The heating device for sand-coated iron mold casting of the first-stage planetary frame of an onshore wind turbine generator set according to claim 1, characterized in that: A second heating device is provided on the horizontal step surface of the outer punch above the first heating device, and the second heating device includes a second electromagnetic induction coil, which is spirally wound from the outside to the inside on the horizontal step surface of the outer punch, and the two free ends of the second electromagnetic induction coil are respectively positive and negative wiring electrodes, and a group of second pillars are provided on the upper side of the second electromagnetic induction coil, and the second pillars are horizontally arranged and annularly distributed on the upper side of the first electromagnetic induction coil, and a group of second pillars are installed on a first disc, and a group of first brackets arranged in an annular manner are provided on the lower side of the first disc, and the first bracket is connected to the mold.

3. The heating device for sand-coated iron mold casting of the first-stage planetary carrier of an onshore wind turbine generator set according to claim 2, characterized in that: A third heating device is provided on the periphery of the outer punch above the second heating device, and the third heating device includes a third electromagnetic induction coil, which is spirally wound on the upper and middle part of the outer punch, and the two free ends of the third electromagnetic induction coil are respectively positive and negative wiring electrodes, and a group of third pillars are provided on the periphery of the third electromagnetic induction coil, and a group of third pillars are arranged on the periphery of the third electromagnetic induction coil, and the third electromagnetic induction coil is fixedly connected to the third pillars, and the third pillars are connected to the mold.

4. The heating device for sand-coated iron mold casting of the first-stage planetary frame of an onshore wind turbine generator set according to claim 3, characterized in that: A fourth heating device is provided on the top horizontal plane of the outer punch above the third heating device, and the fourth heating device includes a fourth electromagnetic induction coil, which is spirally wound from the outside to the inside on the top horizontal plane of the outer punch, and the two free ends of the fourth electromagnetic induction coil are respectively positive and negative wiring electrodes, and a group of fourth pillars are provided on the upper side of the fourth electromagnetic induction coil, and the fourth pillars are horizontally arranged and annularly distributed on the upper side of the fourth electromagnetic induction coil, and a group of the fourth pillars are installed on a second disc, and a group of annularly arranged second brackets are provided on the lower side of the second disc, and the second brackets are connected to the mold.

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