Cold core sand welding sand box for torsion arm of wind generating set
By designing a cold core sand welding sand box for the torsion arm of a wind turbine generator set with multiple groups of sand shooting holes and exhaust holes, and utilizing a pipe assembly and a filter screen structure, the problem of poor exhaust effect in the existing technology is solved, and efficient cold core sand molding and improved casting quality are achieved.
Patent Information
- Application Number
- CN202422575604.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-10-24
AI Technical Summary
The existing cold core sand welding sand box has poor exhaust effect during sand shooting and is easily blocked, which affects the cold core sand molding effect and leads to poor casting quality.
A cold core sand welding sand box for the torsion arm of a wind turbine generator set is designed. It adopts multiple groups of sand shooting holes and exhaust holes, and realizes multi-directional drainage and exhaust through pipe components and filter screen structures to avoid core sand splashing and blockage caused by excessive air pressure.
It increases the exhaust rate, reduces the air pressure, avoids core sand defects and looseness, and improves the cold core sand molding quality and use effect.
Smart Images
Figure CN223441052U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a welding sand box technical field especially relates to a wind generating set torsion arm cold core sand welding sand box. BACKGROUND
[0002] Wind generating set is mainly used for the device of wind energy conversion for electric energy, and the wind power torsion arm is the key part of wind power gear box transmission torque speed, and the torsion arm can be cast through the mould, and the cold core sand welding sand box is matched with the mould, and the cold core sand is shot through the cold core sand shooting machine, and the cold core sand forming is compared to the traditional resin sand molding, realizes the automation, and also shortens the sand mold forming time, reduces the manual cost, and the strength of cold core sand is higher than the strength of resin sand, and the quality of the casting is also improved.
[0003] At present, when the cold core sand welding sand box is shot, the sand is shot through the sand shooting hole of the sand box, and the exhaust hole is opened to exhaust, avoid the cold core sand defect and loose problem, influence the cold core sand forming effect, thereby influence the quality of the casting, but the present sand box only opens single exhaust hole, and the exhaust effect is poor, and the exhaust hole is easy to block, thereby causing the cold core sand forming effect to be poor, therefore, we provide a kind of wind generating set torsion arm cold core sand welding sand box to solve this problem. UTILITY MODEL CONTENTS
[0004] The utility model aims at overcoming the defects in the prior art, and provides a kind of wind generating set torsion arm cold core sand welding sand box.
[0005] To realize the above-mentioned purpose, the technical scheme of the utility model is to design a kind of wind generating set torsion arm cold core sand welding sand box, including upper sand box, the lower end of the upper sand box is equipped with lower mould, the upper sand box includes upper cover and box seat, the box seat is arranged at the lower end of upper cover, the inner chamber of the box seat is inserted with mould core, the box seat is arranged at the upper end of lower mould, the mould core and lower mould are casted with torsion arm casting body;
[0006] The upper end of the upper cover is equipped with a plurality of first sand shooting holes and first exhaust holes, the upper end of the box seat is equipped with a plurality of second sand shooting holes and second exhaust holes, the positions of the second sand shooting holes and the first sand shooting holes are corresponding, the positions of the second exhaust holes and the first exhaust holes are corresponding, the lower end of every two first sand shooting holes and every first exhaust hole is inserted with pipeline assembly, and the lower end of every pipeline assembly is inserted with two second sand shooting holes and one second exhaust hole.
[0007] Further preferred technical solutions also have, the pipeline assembly includes two sand way upper pipes inserted with two first sand shooting holes, the inner cavity of the first exhaust hole inserts the exhaust pipe, the lower end of the sand way upper pipe is screwed with a fixed seat, the lower end of the fixed seat is screwed with a sand way lower pipe, the inner cavity of the fixed seat is in communication with the sand way upper pipe and the sand way lower pipe, the outer side of the fixed seat is provided with a third exhaust hole, the outer side of the fixed seat is provided with a connecting pipe corresponding to the position of the third exhaust hole, the corresponding side of the connecting pipe is connected with the exhaust pipe, the two ends of the exhaust pipe are respectively inserted with the first exhaust hole and the second exhaust hole, the lower end of the sand way lower pipe is inserted with the second sand shooting hole, the lower end of the fixed seat is fitted with the upper end of the box seat, the upper end of the fixed seat is provided with a slot in communication with the third exhaust hole, the inner cavity of the slot is inserted with an insert plate, and the outer side of the insert plate is provided with a filter screen corresponding to the position of the third exhaust hole.
[0008] Further preferred technical solutions also have, the upper end of the fixed seat is provided with an installation slot in communication with the slot, the outer side of the insert plate is bonded with a magnetic strip frame, the fixed seat is made of a magnetic metal material, the magnetic strip frame is clamped in the inner cavity of the installation slot, and the magnetic strip frame is magnetically attracted to the fixed seat.
[0009] Further preferred technical solutions also have, the lower end of the upper cover is integrally connected with a square clamping strip, and the upper end is provided with a clamping groove clamped with the square clamping strip.
[0010] Further preferred technical solutions also have, the outer side of the box seat is screwed with the square clamping strip around, and the lower end of the square clamping strip is bonded with a rubber pad.
[0011] Further preferred technical solutions also have, the lower end of the box seat is provided with positioning holes around, and the upper end of the lower mold is provided with positioning columns inserted with the positioning holes.
[0012] The advantages and beneficial effects of the utility model are: 1, the pipeline assembly can be designed to drain compressed air in multiple directions, improve the rate of air discharge, and reduce the pressure of air entering the inner cavity of the box seat, avoid the core sand of the box seat caused by the large pressure of compressed air to fly out through the second exhaust hole, the exhaust pipe and the first exhaust hole, and the core sand flying in the inner cavity of the box seat after flying around, easy to fly into the inner cavity of the second exhaust hole and cause blockage, affect exhaust, thereby avoiding the problem of cold core sand defect and loose, affecting the cold core sand forming effect, effectively improving the use effect;
[0013] 2, through the magnetic strip frame of the plugboard outside is connected in the installation slot of the fixed seat upper end, and with the fixed seat of magnetic attraction metal material, convenient for plugboard to attract magnetic fixed, and convenient installation and removal, convenient for the filter screen to carry out regular cleaning, avoid long-term use after its surface blockage, influence the subsequent use of ventilation effect, and convenient for the installation and removal of the pipeline assembly, the pipeline assembly is cleaned regularly, convenient to use. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 The overall three-dimensional structure diagram of the present application is provided.
[0015] Figure 2 The overall three-dimensional structure diagram of the present application is provided.
[0016] Figure 3 The partial split three-dimensional structure diagram of the present application is provided.
[0017] Figure 4 The lower mold and torsion arm casting body split three-dimensional structure diagram of the present application is provided.
[0018] Figure 5 The partial split three-dimensional structure diagram of the present application is provided.
[0019] Figure 6 The upper sand box split three-dimensional structure diagram of the present application is provided.
[0020] Figure 7 The pipeline assembly split and partial cross-sectional three-dimensional structure diagram of the present application is provided.
[0021] Figure 8 The partial split three-dimensional structure diagram of the present application is provided. Figure 7 The partial split three-dimensional structure diagram of the present application is provided.
[0022] In the figure: 1, the upper sand box; 11, the upper cover; 12, the box seat; 13, the pipeline assembly; 131, the sand channel upper pipe; 132, the fixed seat; 133, the sand channel lower pipe; 134, the exhaust pipe; 135, the connecting pipe; 136, the third exhaust hole; 137, the plug slot; 138, the installation slot; 139, the plugboard; 1310, the filter screen; 1311, the magnetic strip frame; 14, the first sand shooting hole; 15, the first exhaust hole; 16, the square clamping strip; 17, the rubber pad; 18, the second sand shooting hole; 19, the second exhaust hole; 110, the clamping groove; 111, the bolt; 112, the positioning hole; 2, the lower mold; 3, the positioning column; 4, the mold core; 5, the torsion arm casting body. DETAILED DESCRIPTION
[0023] The specific embodiments of the utility model are further described below in combination with the drawings and examples. The following examples are only used to more clearly illustrate the technical scheme of the utility model, and cannot be used to limit the protection scope of the utility model.
[0024] Referring to Figures 1-8 A wind turbine torsion arm cold core sand welding sand box, including sand box 1, the lower end of sand box 1 is equipped with lower mould 2, sand box 1 includes upper cover 11 and box seat 12, box seat 12 is arranged at the lower end of upper cover 11, the inner cavity of box seat 12 is inserted with mould core 4, box seat 12 is arranged at the upper end of lower mould 2, torsion arm casting body 5 is casted between mould core 4 and lower mould 2, the lower end of box seat 12 is equipped with positioning hole 112 around, the upper end of lower mould 2 is equipped with positioning column 3 and is inserted with it around, positioning hole 112 designed at the lower end of box seat 12 is inserted with positioning column 3, when processing, it is convenient to quickly position and insert between sand box 1 and lower mould 2, and it is convenient to use.
[0025] The upper end of upper cover 11 is equipped with a plurality of groups of first sand shooting hole 14 and first exhaust hole 15, the upper end of box seat 12 is equipped with a plurality of groups of second sand shooting hole 18 and second exhaust hole 19, the position of second sand shooting hole 18 and first sand shooting hole 14 is corresponding, the position of second exhaust hole 19 and first exhaust hole 15 is corresponding, the lower end of every two first sand shooting hole 14 and every first exhaust hole 15 is inserted with pipeline assembly 13, and the lower end of every pipeline assembly 13 is inserted with two second sand shooting hole 18 and one second exhaust hole 19.
[0026] Pipeline assembly 13 includes two sand channel upper pipes 131 inserted with two first sand shooting hole 14, the inner cavity of first exhaust hole 15 is inserted with exhaust pipe 134, the lower end of sand channel upper pipe 131 is screwed with fixed seat 132, the lower end of fixed seat 132 is screwed with sand channel lower pipe 133, the inner cavity of fixed seat 132 is communicated with sand channel upper pipe 131 and sand channel lower pipe 133, the outer side of fixed seat 132 is equipped with third exhaust hole 136, the outer side of fixed seat 132 is equipped with connecting pipe 135 corresponding with the position of third exhaust hole 136, the side corresponding with connecting pipe 135 is connected with exhaust pipe 134, the two ends of exhaust pipe 134 are inserted with first exhaust hole 15 and second exhaust hole 19 respectively, the lower end of sand channel lower pipe 133 is inserted with second sand shooting hole 18, the lower end of fixed seat 132 is attached with the upper end of box seat 12, the upper end of fixed seat 132 is equipped with slot 137 communicated with third exhaust hole 136, the inner cavity of slot 137 is inserted with plugboard 139, and the outer side of plugboard 139 is equipped with filter screen 1310 corresponding with the position of third exhaust hole 136.
[0027] In the process of sand shooting, the sand shooting nozzle of the cold core sand shooting machine is inserted into the first sand shooting hole 14, and then the sand shooting operation is performed by the cold core sand shooting machine. Then the core sand in the sand channel upper pipe 131 is discharged into the sand channel lower pipe 133 from the inner cavity of the fixed seat 132, and then the core sand is discharged from the sand channel lower pipe 133 into the inner cavity of the box seat 12 through the second sand shooting hole 18, which facilitates the cold core sand forming process. During the sand shooting process, compressed air enters the inner cavity of the pipe assembly 13 and the box seat 12 simultaneously with the core sand. When entering the pipe assembly 13, part of the air is discharged through the third exhaust hole 136 of the fixed seat 132, and the core sand is blocked and filtered by the filter screen 1310 on the outside of the plug plate 139 to prevent it from being discharged into the connecting pipe 135. Because of the size of the inner diameter of the connecting pipe 135, excessive core sand discharged into its inner cavity can easily cause blockage. Part of the air enters the exhaust pipe 134 through the connecting pipe 135, and part of the air enters the inner cavity of the box seat 12 with the core sand, and then this part of the air enters the exhaust pipe 134 through the second exhaust hole 19. The air from the connecting pipe 135 and the air from the second exhaust hole 19 are discharged upward and finally discharged through the first exhaust hole 15. The designed pipe assembly 13 can drain and discharge compressed air in multiple directions, which improves the discharge rate of the air and reduces the pressure of the air entering the inner cavity of the box seat 12. Avoiding the problem of cold core sand being discharged through the exhaust airway (second exhaust hole 19, exhaust pipe 134 and first exhaust hole 15) caused by the large pressure of the compressed air, and the problem of the core sand flying into the second exhaust hole 19 after flying around in the inner cavity of the box seat 12, which can cause blockage and affect exhaust, thereby avoiding the problems of cold core sand defects and loose, affecting the cold core sand forming effect, and effectively improving the use effect.
[0028] The upper end of the fixed seat 132 is provided with a mounting groove 138 communicating with the insertion groove 137, and the outer side of the plug plate 139 is bonded with a magnetic strip frame 1311. The fixed seat 132 is made of magnetic metal material, the magnetic strip frame 1311 is clamped in the inner cavity of the mounting groove 138, and the magnetic strip frame 1311 is magnetically attracted to the fixed seat 132.
[0029] The magnetic strip frame 1311 on the outer side of the plug plate 139 is clamped on the mounting groove 138 at the upper end of the fixed seat 132, and is magnetically attracted to the fixed seat 132 made of magnetic metal material. This facilitates the magnetic fixation of the plug plate 139, and facilitates installation and removal, which facilitates the regular cleaning of the filter screen 1310 to avoid blockage of the surface after long-term use, affecting the subsequent ventilation effect.
[0030] The lower end of the upper cover 11 is integrally connected with the square clamping strip 16, and the upper end of the box seat 12 is provided with a clamping groove 110 clamped with the square clamping strip 16. The outer side of the box seat 12 is screwed with the square clamping strip 16 through bolts 111, and the lower end of the square clamping strip 16 is bonded with a rubber pad 17.
[0031] The square clamping strip 16 at the lower end of the upper cover 11 is clamped with the clamping groove 110 at the upper end of the box seat 12, and then the bolts 111 are used to screw and fix them. This facilitates installation and disassembly, and facilitates the installation and disassembly of the pipe assembly 13. The pipe assembly 13 can be regularly cleaned, which is convenient to use. The rubber pad 17 effectively improves the air tightness effect of the connection between the upper cover 11 and the box seat 12, and improves the use effect.
[0032] Working principle: the lower mold 2, the mold core 4 and the torsion arm casting body 5 casted are all existing products, too much repetition is not done here, the utility model discloses in use, the positioning hole 112 of the lower end of the box seat 12 is inserted with the positioning column 3 of the upper end of the lower mold 2, the sand box 1 can be conveniently positioned and inserted between the lower mold 2, convenient to use, when shooting sand, the sand shooting nozzle of the external cold core sand shooting machine is inserted with the first sand shooting hole 14, then the cold core sand shooting machine is used to carry out sand shooting processing operation, then the core sand is discharged into the sand channel upper pipe 131 inserted with the first sand shooting hole 14 through the sand shooting nozzle, then the core sand in the sand channel upper pipe 131 enters the sand channel lower pipe 133 from the fixed seat 132 inner cavity, and then enters the inner cavity of the box seat 12 from the sand channel lower pipe 133 and the second sand shooting hole 18, which is convenient for cold core sand forming processing, and in the process of sand shooting, compressed air enters the inner cavity of the pipe assembly 13 and the box seat 12 simultaneously with the core sand, when entering the pipe assembly 13, part of the air is discharged through the third exhaust hole 136 of the fixed seat 132, and the core sand is blocked and filtered through the filter screen 1310 on the outside of the plugboard 139, to avoid its discharge into the connecting pipe 135, because the inner diameter of the connecting pipe 135, when too much core sand is discharged into the inner cavity, it is easy to cause blockage, and part of the air enters the exhaust pipe 134 through the connecting pipe 135, at the same time, part of the air enters the inner cavity of the box seat 12 through the sand channel lower pipe 133, then this part of the air enters the exhaust pipe 134 through the second exhaust hole 19, and the air entering the exhaust pipe 134 from the connecting pipe 135 is all discharged upward, finally discharged through the first exhaust hole 15, the designed pipe assembly 13 can drain the compressed air in multiple directions, improve the discharge rate of the air, and reduce the pressure of the air entering the inner cavity of the box seat 12, avoid the core sand in the box seat 12 flying out through the exhaust airway (second exhaust hole 19, exhaust pipe 134 and first exhaust hole 15) and the core sand flying in the inner cavity of the second exhaust hole 19 after flying around in the inner cavity of the box seat 12, which can cause blockage and affect exhaust, so as to avoid the problems of cold core sand defect and loose, affect the cold core sand forming effect, effectively improve the use effect.
[0033] The above is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the technical field, without departing from the technical principle of the utility model, a number of improvements and refinements can be made, and these improvements and refinements should be regarded as the protection range of the utility model.
Claims
1. A cold core sand welding flask for a torsion arm of a wind turbine generator set, comprising an upper flask, characterized in that: The lower end of the upper flask is provided with a lower mold, and the upper flask includes an upper cover and a box seat, the box seat is provided at the lower end of the upper cover, the inner cavity of the box seat is plugged with a mold core, and the box seat is provided at the upper end of the lower mold, and a torque arm casting body is cast between the mold core and the lower mold; The upper end of the upper cover is provided with several groups of first sand shooting holes and first exhaust holes, and the upper end of the box base is provided with several groups of second sand shooting holes and second exhaust holes. The positions of the second sand shooting holes correspond to the positions of the first sand shooting holes, and the positions of the second exhaust holes correspond to the positions of the first exhaust holes. The lower ends of every two of the first sand shooting holes and each of the first exhaust holes are connected to the pipe assembly, and the lower end of each of the pipe assemblies is connected to two second sand shooting holes and one second exhaust hole.
2. A cold core sand welding flask for a torsion arm of a wind turbine generator set according to claim 1, characterized in that: The pipe assembly includes two sand path upper tubes that are plugged into the two first sand shooting holes, the inner cavity of the first exhaust hole is plugged into the exhaust pipe, the lower end of the sand path upper tube is screwed with a fixing seat, the lower end of the fixing seat is screwed with a sand path lower tube, the inner cavity of the fixing seat is connected with the sand path upper tube and the sand path lower tube, the outer side of the fixing seat is provided with a third exhaust hole, the outer side of the fixing seat is provided with a connecting pipe corresponding to the position of the third exhaust hole, the corresponding side of the connecting pipe is commonly connected to the exhaust pipe, the two ends of the exhaust pipe are respectively plugged into the first exhaust hole and the second exhaust hole, the lower end of the sand path lower tube is plugged into the second sand shooting hole, the lower end of the fixing seat is fitted with the upper end of the box seat, the upper end of the fixing seat is provided with a slot connected to the third exhaust hole, the inner cavity of the slot is plugged with a plug board, and the outer side of the plug board is provided with a filter corresponding to the position of the third exhaust hole.
3. A cold core sand welding flask for a torsion arm of a wind turbine generator set according to claim 2, characterized in that: The upper end of the fixing seat is provided with a mounting groove connected to the slot, the upper outer side of the plug board is bonded with a magnetic stripe frame, the magnetic stripe frame is clamped in the inner cavity of the mounting groove, and the magnetic stripe frame is magnetically attracted to the fixing seat.
4. The cold core sand welding flask for the torsion arm of a wind turbine generator set according to claim 1, characterized in that: The lower end of the upper cover is integrally connected to a square clip, and the upper end of the box seat is provided with a clip groove that is clipped to the square clip.
5. A cold core sand welding flask for a torsion arm of a wind turbine generator set according to claim 4, characterized in that: The outer sides of the box seat are screwed to the square clamping strips through bolts, and the lower ends of the square clamping strips are bonded to rubber pads.
6. The cold core sand welding flask for the torsion arm of a wind turbine generator set according to claim 1, characterized in that: Positioning holes are arranged around the lower end of the box seat, and positioning columns plugged with the upper end of the lower mold are arranged around the upper end of the lower mold.