Wind generating set planet carrier co-container sand box

Abstract

The utility model relates to the technical field of sand boxes, in particular to a common-container sand box for a planet carrier of a wind generating set, which is characterized in that an upper sand box inner container, an upper sand box shell and an upper sand box outer frame are connected through a plurality of upper connecting rods penetrating through the upper sand box inner container, the upper sand box shell and the upper sand box outer frame; a sprue is formed in the upper part of the cope flask shell and is communicated with the cope flask inner container; the lower sand box inner container, the lower sand box shell and the lower sand box outer frame are connected through a plurality of lower connecting rods penetrating through the lower sand box inner container, the lower sand box shell and the lower sand box outer frame, each lower connecting rod is sleeved with a hollow sleeve, and the upper end of each hollow sleeve is connected with the outside through an upper through groove formed in the lower sand box shell. The lower end of each hollow sleeve is connected with the outside through a lower through groove formed in the bottom of the lower sand box outer frame, through the structure, balanced solidification and directional solidification of a casting are achieved, shrinkage porosity is reduced, and therefore the casting technology without the chilling block riser is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sand box technical field, and specifically is a wind generating set planetary carrier common bladder sand box. BACKGROUND

[0002] The planetary carrier is one of important parts in the gear transmission of the gear box of the wind generating set, and mainly plays the role of supporting the planetary wheel and the planetary wheel shaft.

[0003] The common bladder sand box is a special sand box structure, which mainly provides a cavity required for forming the planetary carrier casting, so that the metal melt is filled and the complete casting is formed during casting. In the prior art, the prepared sand is filled into the cavity of the common bladder sand box, and is compacted. The preheated metal melt is poured into the cavity of the common bladder sand box through a pouring gate. The metal melt is cooled and solidified into the planetary carrier casting in the cavity of the common bladder sand box. After the casting is completed, the planetary carrier casting is taken out of the common bladder sand box.

[0004] The existing process adopts the design of the iron mold sand box. Although the sand consumption is greatly reduced, one sand box needs to be designed for one model, which leads to high design cost, long design cycle, low efficiency, uneven cooling of the casting with large wall thickness difference, and difficulty in realizing directional and balanced solidification. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the defects in the prior art, and provides a common bladder sand box for the planetary carrier of the wind generating set.

[0006] To achieve the above-mentioned purpose, the technical scheme of the utility model is to design a common bladder sand box for the planetary carrier of the wind generating set, characterized in that: an upper sand box outer frame is provided, a detachable upper sand box shell is arranged in the upper sand box outer frame, a detachable upper sand box inner bladder is arranged in the upper sand box shell, the upper sand box inner bladder, the upper sand box shell and the upper sand box outer frame are connected through a plurality of upper connecting rods penetrating the upper sand box inner bladder, the upper sand box shell and the upper sand box outer frame, a hollow sleeve is sleeved on each upper connecting rod, the upper end of each hollow sleeve is connected with the outside through an upper through groove formed in the upper sand box outer frame, the lower end of each hollow sleeve is connected with the outside through a lower through groove formed in the bottom of the upper sand box shell, cooling gas can enter the hollow sleeve through the upper through groove and flow out of the lower through groove to form cooling of the sand mold, a pouring gate is formed in the upper part of the upper sand box shell and is communicated with the upper sand box inner bladder.

[0007] The lower sand box outer frame is internally provided with a detachable lower sand box shell, the lower sand box shell is internally provided with a detachable lower sand box inner container, the lower sand box inner container, the lower sand box shell and the lower sand box outer frame are connected through a plurality of lower connecting rods penetrating through the lower sand box inner container, the lower sand box shell and the lower sand box outer frame, a hollow sleeve is sleeved on each lower connecting rod, the upper end of each hollow sleeve is connected with the outside through an upper through groove formed on the lower sand box shell, the lower end of each hollow sleeve is connected with the outside through a lower through groove formed on the bottom of the lower sand box outer frame, a spiral guide plate is arranged between the hollow sleeve and the lower connecting rod, and cooling gas can enter the hollow sleeve through the lower through groove and flow out of the upper through groove to form cooling of the sand mold. Through the above structure, cooling gas of different flow rates can be delivered, the cooling speed of the castings after casting can be effectively accelerated, the performance of the castings can be improved, balanced solidification and directional solidification of the castings can be realized, shrinkage can be reduced, the casting process without cold iron riser can be realized, the castings can be uniformly and quickly solidified, the performance of the castings can be improved, and the adaptability of the sand mold is stronger due to the detachable inner container. Without changing the outer frame and the shell, different sizes and shapes of products can be adapted by changing the shape of the sand core, which can make the shell and the outer frame reusable and reduce production cost.

[0008] Further preferred technical solutions also include that a plurality of fixing blocks are fixedly connected to the middle part of the upper sand box outer frame, the plurality of fixing blocks are equidistantly distributed, and the plurality of fixing blocks are arranged at the top position of the upper sand box outer frame. The upper sand box outer frame and the upper sand box shell are both provided with a plurality of fixing bolts in the middle part, and the upper sand box shell is installed on the fixing blocks through the fixing bolts. Through the above structure, the inner container and the outer frame can be quickly connected, different types and sizes of castings can be adapted, the stress between the inner container and the outer frame can be uniformly distributed, the risk of stress concentration and fatigue failure can be reduced, and the durability and service life of the castings can be improved.

[0009] Further preferred technical solutions also include that two fixing rods are fixedly connected to the top of the upper sand box outer frame, the two fixing rods are symmetrically arranged, an installation groove is formed in the middle part of the fixing rod, a pulley is rollingly connected to the middle part of the installation groove, a connecting rod is rotatably connected to the side wall of the pulley, a sleeve is slidably connected to the middle part of the connecting rod, and a feeding hopper is fixedly connected to the middle part of the sleeve. The top of the feeding hopper is provided with a horn mouth. Through the above structure, the metal liquid can be accurately aligned with the pouring gate for casting, deviation of the metal liquid during the casting process can be reduced, waste of the metal liquid can be reduced, and the feeding of the pouring gate can be effectively utilized through accurate casting, so as to reduce the shrinkage hole and shrinkage defect in the castings.

[0010] Further preferred technical solutions also have, the lower sand box outer frame side wall is fixed with two groups of first fixed plate, two groups The first fixed plate is symmetrically arranged, the top of the first fixed plate is fixed with an elastic expansion rod, the top of the first fixed plate is fixed with a spring, the spring is arranged outside the elastic expansion rod, the bottom of the upper sand box outer frame is fixed with two groups of second fixed plate, two groups The second fixed plate is symmetrically arranged with the first fixed plate, the middle of the first fixed plate is provided with a fixed assembly, through the above structure, the upper sand box outer frame can be uniformly lifted in multiple positions, the casting can be uniformly stressed during the taking-out process after solidification, and the problem of casting deformation caused by uneven gravity during taking-out is reduced.

[0011] Further preferred technical solutions also have, the fixed assembly includes a hinge shaft, the hinge shaft is fixed at the end of the first fixed plate, the middle of the hinge shaft is rotatably connected with a positioning plate, the positioning plate is provided with a screw rod, the end of the second fixed plate is provided with a fixed hole, the screw rod is screwed with the fixed hole, through the above structure, the impact caused by high temperature and pressure of the metal liquid during casting can be reduced, the upper sand box outer frame is moved or deformed due to the impact, and the stability during casting is improved.

[0012] Further preferred technical solutions also have, the lower sand box outer frame is provided with a plurality of lower webs to form a cavity connected with the outside, through the above structure, the large amount of heat energy released by the metal liquid during casting can be discharged in time, the quality and performance of the casting caused by high temperature of the metal liquid are reduced, and the heat dissipation efficiency during casting is effectively improved.

[0013] Further preferred technical solutions also have, the end of the elastic expansion rod is provided with a buffer pad, and the buffer pad is fixed at the top of the elastic expansion rod.

[0014] Further preferred technical solutions also have, the installation slot penetrates one end of the fixed rod, and the pulley can be installed and removed in the middle of the installation slot.

[0015] The advantages and beneficial effects of the utility model lie in: 1. The planetary carrier shared bladder sand box of the wind generating set, through the above structure, different flow cooling gas can be transported, the cooling speed of the casting after casting is effectively accelerated, the performance of the casting is improved, balanced solidification and directional solidification of the casting are realized, shrinkage is reduced, so that the casting process without cold iron riser is realized, and the casting can be uniformly and quickly solidified, and the performance of the casting is improved.

[0016] 2. The utility model relates to a planetary carrier shared bladder sand box of the wind generating set, through the above structure, the inner container and the outer frame can be quickly connected, different types and sizes of casting requirements can be adapted, stress between the inner container and the outer frame can be evenly distributed, the risk of stress concentration and fatigue failure is reduced, and the durability and service life of the casting are improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a perspective view of the present application;

[0018] Figure 2 is an exploded view of the lower sand box inner bag in the present application;

[0019] Figure 3 is a structure schematic view of the long shaft in the present application;

[0020] Figure 4 is an exploded view of the fixed assembly in the present application;

[0021] Figure 5 is a structure schematic view of the feeding hopper in the present application;

[0022] Figure 6 is a structure schematic view of the spiral guide vane in the present application.

[0023] In the figure: 1, lower sand box shell; 2, lower sand box outer frame; 3, lower connecting rod; 4, lower sand box inner bag; 5, upper sand box shell; 6, upper sand box outer frame; 7, upper sand box inner bag; 8, lower web; 9, connecting flange; 10, hollow sleeve; 11, spiral guide vane 20, fixed block; 21, fixed bolt; 30, fixed rod; 31, mounting groove; 32, pulley; 33, connecting rod; 34, sleeve; 35, feeding hopper; 40, first fixed plate; 41, elastic telescopic rod; 42, spring; 43, second fixed plate; 44, buffer pad; 50, hinged shaft; 51, positioning plate; 52, fixed hole; 53, screw rod. DETAILED DESCRIPTION

[0024] The specific embodiments of the present application are further described below in conjunction with the drawings and examples. The following examples are only used to more clearly illustrate the technical scheme of the present application, and cannot limit the protection scope of the present application.

[0025] As Figures 1 to 3The utility model discloses a wind generating set planet carrier shared sand box, including the lower sand box outer frame 2, install the lower sand box shell 1 in the lower sand box outer frame 2, install lower sand box inner bag 4 in the lower sand box shell 1, the lower sand box shell 1 with lower sand box inner bag 4 have the flange of cooperation, the lower sand box outer frame 2, lower sand box shell 1, lower sand box inner bag 4 are connected through a plurality of lower connecting rods 3, the lower connecting rod 3 is connected from the bottom of the lower sand box outer frame 2 and passes through the lower sand box shell 1 and the outside of lower sand box inner bag 4, the lower connecting rod 3 can be connected with lower sand box inner bag 4 through screw thread, also can be fixed on lower sand box inner bag 4, then the other end of lower connecting rod 3 is connected with the lower sand box outer frame 2 through connecting flange 9, the length of lower connecting rod 3 is different, mainly according to the length of different connection position use, the hollow sleeve 10 of each lower connecting rod 3 is equipped, the upper end of hollow sleeve 10 corresponds and is equipped with the stepped recess of lower sand box shell 1, the stepped recess is communicated with the outside through the ring line and is arranged in the upper through groove of lower sand box shell 1, the lower end of hollow sleeve 10 corresponds and is equipped with the stepped recess of lower sand box outer frame 2, the stepped recess is communicated with the outside through the ring line and is arranged in the lower through groove of lower sand box outer frame 2, spiral guide vane 11 is equipped between hollow sleeve 10 and lower connecting rod 3, cooling gas can pass through lower through groove and flow out from upper through groove into hollow sleeve 10 and form the cooling of casting, spiral guide vane 11 can improve the cooling effect of cooling gas, through the above structure, different flow cooling gas can be transported, the cooling speed of casting after casting is effectively accelerated, the performance of casting can be improved, realizes the balanced solidification and directional solidification of casting, reduces the shrinkage, thereby realizes the casting process of no cold iron riser, and can promote the uniform and rapid solidification of casting, improve the performance of casting, and because the inner bag adopts the detachable mode, the applicability of sand box is stronger, under the condition that the outer frame and shell are not changed, the shape of inner bag can be changed to adapt to the product of different sizes and shapes, which can make the shell and outer frame be reused, reduce production cost.

[0026] Also includes the upper sand box frame 6, the upper sand box frame 6 is installed in the upper sand box shell 5, the upper sand box shell 5 is installed in the upper sand box liner 7, the upper sand box shell 5 and the upper sand box liner 7 have a flange, the upper sand box frame 6, the upper sand box shell 5, the upper sand box liner 7 are connected by several upper connecting rods, the upper connecting rod is connected outside by the upper sand box shell 5 and the upper sand box liner 7 from the top of the upper sand box frame 6, the upper connecting rod can be connected with the upper sand box liner 7 by thread, also can be fixed on the upper sand box liner 7, then the other end of the upper connecting rod is connected with the upper sand box frame 6 through the connecting flange 9, each upper connecting rod is sleeved with a hollow sleeve, the upper end of each hollow sleeve is connected outside through the upper through slot opened on the upper sand box frame 6, the lower end of each hollow sleeve is connected outside through the lower through slot opened on the bottom of the upper sand box shell 5, the cooling gas can enter the hollow sleeve through the upper through slot and flow out of the lower through slot to form cooling for the casting, the upper part of the upper sand box shell 5 is provided with a sprue communicated with the upper sand box liner 7.

[0027] The upper sand box frame 6 can be installed on the lower sand box frame 2, at the same time, the upper sand box shell 5 can be buckled on the lower sand box shell 1, the upper sand box liner 7 can be buckled on the lower sand box liner 4, the upper part of the upper sand box shell 5 is provided with a sprue communicated with the upper sand box liner 7, and connected with the sprue seat on the bottom of the lower sand box liner 4 through the sprue.

[0028] As shown in Figures 1 to 3 The upper sand box frame 6 is fixed with a plurality of fixed blocks 20 in the middle, the plurality of fixed blocks 20 are distributed equidistantly, the plurality of fixed blocks 20 are arranged at the top position of the upper sand box frame 6, the upper sand box shell 5 and the upper sand box frame 6 are provided with a plurality of fixed bolts in the middle, the upper sand box shell 5 is installed on the fixed blocks 20 through the fixed bolts, in work, according to the profile size of the product, the corresponding type of lower sand box liner 4 and upper sand box liner 7 is selected, the lower sand box liner 4 and the upper sand box liner 7 are placed in the corresponding lower sand box frame 2 and upper sand box frame 6, the upper sand box shell 5 is installed in the plurality of fixed blocks 20 in the middle of the upper sand box frame 6 through the fixed bolts 21, so that the upper sand box liner 5 is fixed in the middle of the upper sand box frame 6, through the above structure, the liner and the frame can be quickly connected, which can adapt to different types and sizes of castings, can make the stress between the shell, the liner and the frame evenly distributed, reduce the risk of stress concentration and fatigue failure, so as to improve the durability and service life of the casting.

[0029] As shown in Figure 1 And Figure 5As shown, the upper sand box outer frame 6 top is fixed with two fixed rods 30, two fixed rods 30 are symmetrically arranged, the middle of the fixed rod 30 is provided with a mounting slot 31, the middle of the mounting slot 31 is rotatably connected with a pulley 32, two side walls of the pulley 32 are rotatably connected with a connecting rod 33, the middle of the connecting rod 33 is slidably connected with a sleeve 34, the middle of the sleeve 34 is fixedly connected with a feed hopper 35, the top of the feed hopper 35 is provided with a horn mouth, a plurality of gates are arranged on the upper part of the upper sand box shell and communicated with the upper sand box liner, when casting, the connecting rod 33 is moved in the mounting slot 31 through the pulley 32 at both ends, at the same time, the feed hopper 35 is pushed, the sleeve 34 is slid in the middle of the connecting rod 33, the feed hopper 35 is freely moved, the bottom of the feed hopper 35 is moved to the corresponding gate 10 of the specified position, and then the material is poured into the feed hopper 35, and then the material is poured into the gate 10 through the feed hopper 35, so as to realize accurate casting. Through the above structure, the metal liquid can be accurately aligned with the gate 10 for casting, the deviation of the metal liquid during casting is reduced, the waste of the metal liquid is caused, the feeding of the gate 10 is effectively utilized through accurate casting, and the lock hole and shrinkage defect in the casting are reduced.

[0030] As shown in Figure 1 and Figure 4 , the side wall of the lower sand box outer frame 2 is fixedly connected with two groups of first fixed plates 40, two groups of first fixed plates 40 are symmetrically arranged, the top of the first fixed plate 40 is fixedly connected with an elastic telescopic rod 41, the top of the first fixed plate 40 is fixedly connected with a spring 42, the spring 42 is arranged outside the elastic telescopic rod 41, the bottom of the upper sand box outer frame 6 is fixedly connected with two groups of second fixed plates 43, two groups of second fixed plates 43 are arranged in corresponding relationship with the first fixed plates 40, the middle of the first fixed plate 40 is provided with a fixing assembly, when the upper sand box outer frame 6 is placed on the lower sand box outer frame 2, the second fixed plate 43 and the corresponding elastic telescopic rod 41 and the spring 42 are in contact with the end, the upper sand box outer frame 6 is pressed downward, the end of the elastic telescopic rod 41 is inwards contracted, at the same time, the spring 42 is extruded and contracted, the elastic telescopic rod 41 and the spring 42 are kept in the contracted state through the fixing assembly, when the casting is completed, the fixing assembly is opened, the elastic telescopic rod 41 and the spring 42 uniformly lift the upper sand box outer frame 6 through the elastic force, through the above structure, the upper sand box outer frame 6 can be uniformly lifted at multiple positions, the casting can be subjected to uniform force during taking out after solidification, and the problem that the casting is deformed due to uneven gravity during taking out is reduced.

[0031] As shown in Figure 1 and Figure 4As shown, the fixed assembly comprises a hinge shaft 50 fixed at the end of the first fixed plate 40, the middle part of the hinge shaft 50 is rotatably connected with a positioning plate 51, the positioning plate 51 is installed with a screw rod 53, the end of the second fixed plate 43 is provided with a fixed hole 52, the screw rod 53 is threadedly connected with the fixed hole 52, during operation, when the second fixed plate 43 presses the elastic telescopic rod 41 and the spring 42, the positioning plate 51 is rotated upward through the hinge shaft 50, the screw rod 53 is installed in the middle part of the positioning plate 51, at the same time, the end of the screw rod 53 enters the inside of the corresponding fixed hole 52, the screw rod 53 is rotated, the second fixed plate 43 is fixed through the cooperation of the screw rod 53 and the positioning plate 51, when the screw rod 53 rotates out of the inside of the fixed hole 52, the positioning plate 51 is rotated downward to be folded, through the above structure, the impact caused by high temperature and pressure of the metal liquid can be reduced during the casting process, the movement or deformation of the upper flask outer frame 6 caused by the impact is reduced, the stability during the casting process is ensured, the structure of the mold cavity between the lower flask outer frame 2 and the upper flask outer frame 6 is kept stable, the size and shape of the casting are increased to achieve the predetermined effect, and the generation of waste caused by the decrease of precision is reduced.

[0032] As shown in the Figure 3 lower flask outer frame 2 is provided with a plurality of lower webs 8 to form a cavity connected with the outside, during operation, when the casting solidifies, the heat inside the lower flask outer frame 2 is discharged to increase the cooling speed of the casting, through the above structure, the large amount of heat energy released by the metal liquid can be discharged in time during the casting process, the decrease of the quality and performance of the casting caused by high temperature of the metal liquid is reduced, the heat dissipation efficiency during the casting process is effectively improved, the temperature inside the lower flask outer frame 2 is uniformly distributed, and the thermal stress caused by uneven temperature is reduced.

[0033] As shown in the Figure 4 end of the elastic telescopic rod 41 is installed with a buffer pad 44, the buffer pad 44 is fixed at the top of the elastic telescopic rod 41, during operation, when the second fixed plate 43 is pressed downward, it first contacts with the buffer pad 44, the impact force of the second fixed plate 43 when it is pressed downward is absorbed by the buffer pad 7, through the above structure, the impact force of the second fixed plate 43 on the end of the elastic telescopic rod 41 can be absorbed and dispersed, the problem that the elastic telescopic rod 41 is damaged by the direct pressure of the second fixed plate 43 is reduced, and stable support is provided.

[0034] As shown in the Figure 5As shown, the mounting groove 31 penetrates one end of the fixed rod 30, and the pulley 32 is detachably mounted in the middle of the mounting groove 31. During operation, when pouring, the pulley 32 is put into the mounting groove 31 from one end of the fixed rod 30, and when pouring is completed, the pulley 32 is slid out of the mounting groove 31, so that the feeding hopper 35 can be disassembled, stored and installed. Through the above structure, the feeding hopper 35 can be disassembled and installed, the pulley 32 is slid out of the fixed rod 30 for separate storage when not in use, and the space occupation of the upper sand box outer frame 6 can be reduced, facilitating the storage of the upper sand box outer frame 6.

[0035] In operation, first, the lower sand box shell 1 is placed inside the lower sand box outer frame 2, and then the lower sand box inner container 4 is installed inside the lower sand box shell 1. The lower sand box shell 1 is installed with the corresponding lower sand box inner container 4. The plurality of lower connecting rods 14 at the bottom of the lower sand box outer frame penetrates the middle part of the lower sand box shell 1. Then, the upper sand box inner container 5 is placed inside the upper sand box outer frame 6. During casting, the bottom of the upper sand box outer frame 6 is placed on the top of the lower sand box outer frame 2. The metal liquid is injected into the corresponding pouring gate 10, so that the metal liquid enters the inner cavity. The designed outer frame forms a separate cavity connected to the outside through the lower web plate 13. After the casting is completed, the cooling gas is introduced through the hollow sleeve. According to the thermal modulus of the casting, the cooling gas is delivered. According to the profile size of the product, the corresponding type of lower sand box inner container 4 and upper sand box inner container 7 is selected. The lower sand box inner container 4 and the upper sand box inner container 7 are placed in the corresponding lower sand box outer frame 2 and upper sand box outer frame 6. The upper sand box shell 5 is installed in the plurality of fixing blocks 20 in the middle part of the upper sand box outer frame 6 through the fixing bolts, so that the upper sand box shell 5 is fixed in the middle part of the upper sand box outer frame 6. At the same time, the lower sand box shell 5 is placed in the middle part of the lower sand box outer frame 2, and the lower sand box shell 5 is fixed in the lower sand box outer frame 2 through the fixing bolts. During the casting process, the connecting rod 33 moves inside the installation groove 31 through the pulleys 32 at both ends, and at the same time, the feeding hopper 35 is pushed, driving the sleeve 34 to slide in the middle part of the connecting rod 33, realizing the free movement of the feeding hopper 35. The bottom of the feeding hopper 35 is moved to the corresponding pouring gate 10 at the designated position, and then the material is poured into the feeding hopper 35, and then the material is poured into the pouring gate 10 through the feeding hopper 35, thereby realizing precise casting. When the upper sand box outer frame 6 is placed on the lower sand box outer frame 2, the second fixing plate 43 is in contact with the corresponding elastic expansion rod 41 and the end of the spring 42. The upper sand box outer frame 6 is pressed downward, and the end of the elastic expansion rod 41 is retracted inward when it is squeezed, and the spring 42 is also squeezed and retracted. The elastic expansion rod 41 and the spring 42 are kept in the retracted state through the fixing assembly. After the casting is completed, the fixing assembly is opened, and the elastic expansion rod 41 and the spring 42 uniformly lift the upper sand box outer frame 6 through the elastic force. When the second fixing plate 43 exerts pressure on the elastic expansion rod 41 and the spring 42, the positioning plate 51 is turned upward through the hinge shaft 50. The screw rod 53 is installed in the middle part of the positioning plate 51, and the end of the screw rod 53 enters the corresponding fixing hole 52. The screw rod 53 is rotated, and the second fixing plate 43 is fixed through the cooperation of the screw rod 53 and the positioning plate 51. When the screw rod 53 is rotated out of the fixing hole 52, the positioning plate 51 is turned down and retracted. During assembly, the upper sand box outer frame 6 and the lower sand box outer frame 2 can be clamped by external pressure, so that the screw rod 53 and the fixing hole 52 are centered. During disassembly, the upper sand box outer frame 6 can also be pressed against the lower sand box outer frame 2 by external pressure, so that the screw rod 53 and the fixing hole are separated. During the solidification process of the casting, the heat generated inside the upper sand box outer frame 6 is discharged, increasing the cooling speed of the casting. When the second fixing plate 43 is pressed downward, it first contacts the buffer pad 44, which absorbs the impact force when the second fixing plate 43 is pressed downward.When casting, the pulley 32 is put into the installation slot 31 from one end of the fixed rod 30, and when the casting is completed, the pulley 32 is slid out of the installation slot 31, so that the feeding hopper 35 can be disassembled and stored or installed.

[0036] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A planetary carrier common flask for a wind turbine generator set, characterized by: The flask comprises an upper sand box outer frame, wherein a detachable upper sand box shell is provided in the upper sand box outer frame, and a detachable upper sand box liner is provided in the upper sand box shell, the upper sand box liner, the upper sand box shell and the upper sand box outer frame are connected by a plurality of upper connecting rods passing through the upper sand box liner, the upper sand box shell and the upper sand box outer frame, a hollow sleeve is sleeved on each of the upper connecting rods, the upper end of each of the hollow sleeves is connected to the outside through an upper through groove provided on the upper sand box outer frame, and the lower end of each of the hollow sleeves is connected to the outside through a lower through groove provided at the bottom of the upper sand box shell, cooling gas can enter the hollow sleeve through the upper through groove and flow out from the lower through groove to cool the sand mold, and a gate is provided on the upper part of the upper sand box shell to communicate with the upper sand box liner; The cam is provided with a plurality of lower connecting rods which pass through the lower flask inner liner, the lower flask shell and the lower flask outer frame. A hollow sleeve is mounted on each of the lower connecting rods. The upper end of each of the hollow sleeves is connected to the outside through an upper through groove provided on the lower flask shell, and the lower end of each of the hollow sleeves is connected to the outside through a lower through groove provided on the bottom of the lower flask outer frame. A spiral guide vane is provided between the hollow sleeve and the lower connecting rod. Cooling gas can enter the hollow sleeve through the lower through groove and flow out from the upper through groove to cool the sand mold.

2. The wind turbine planetary carrier common flask according to claim 1, characterized in that: A plurality of fixing blocks are fixedly connected to the middle of the upper sand box outer frame, and the plurality of fixing blocks are equidistantly distributed. The plurality of fixing blocks are arranged at the top position of the upper sand box outer frame. The upper sand box outer frame and the middle of the upper sand box shell are both provided with a plurality of fixing bolts, and the upper sand box shell is mounted on the fixing blocks through the fixing bolts.

3. The planetary carrier common flask of a wind turbine generator set according to claim 1, characterized in that: Two fixing rods are fixedly connected to the top of the upper sand box outer frame. The two fixing rods are symmetrically arranged. A mounting groove is opened in the middle of the fixing rod. A pulley is connected to the middle of the mounting groove in a rolling manner. The two pulley side walls are rotatably connected to a connecting rod. A sleeve is slidably connected to the middle of the connecting rod. A feed hopper is fixed to the middle of the sleeve. The top of the feed hopper is set as a bell mouth.

4. The wind turbine planetary carrier common flask according to claim 3, characterized in that: Two groups of first fixing plates are fixedly connected to the side walls of the lower sand box outer frame, and the two groups of first fixing plates are symmetrically arranged. An elastic telescopic rod is fixedly connected to the top of the first fixing plate, and a spring is fixedly connected to the top of the first fixing plate, and the spring is arranged outside the elastic telescopic rod. Two groups of second fixing plates are fixedly connected to the bottom of the upper sand box outer frame, and the two groups of second fixing plates are symmetrically arranged with the first fixing plate, and a fixing component is installed in the middle of the first fixing plate.

5. The planetary carrier common flask of a wind turbine generator set according to claim 4, characterized in that: The fixing assembly includes a hinge shaft, which is fixed to the end of the first fixing plate. The middle of the hinge shaft is rotatably connected to a positioning plate, and the positioning plate is installed with a screw. A fixing hole is opened at the end of the second fixing plate, and the screw is threadedly connected to the fixing hole.

6. The planetary carrier common flask of a wind turbine generator set according to claim 4, characterized in that: A buffer pad is installed at the end of the elastic telescopic rod, and the buffer pad is fixedly connected to the top of the elastic telescopic rod.

7. The planetary carrier common flask for a wind turbine generator set according to claim 3, characterized in that: The installation slot passes through one end of the fixing rod, and the pulley can be installed and removed in the middle of the installation slot.

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