Aluminum shell resistor and processing device thereof

Abstract

The aluminum shell resistor comprises an aluminum shell and a resistor core, the resistor core is fixedly installed in the middle of the inner side of the aluminum shell, screws are fixedly installed in the middles of the outer surfaces of the two ends of the resistor core, and connecting pieces used in cooperation with the screws are fixedly installed at the two ends of the aluminum shell. Quartz sand is filled between the aluminum shell and the resistor core, a cylindrical mica block is mounted between the screw rod and the resistor core, the screw rod and the connecting sheet as well as the screw rod and the resistor core are in butt joint and fixed through nuts, an elastic gasket is arranged between the screw rod and the nuts, and sealing materials are arranged on the inner sides of the two ends of the aluminum shell. An alloy wire is wound on the outer surface of the resistor core; the screw is used as a leading-out structure, and the two ends of the screw are packaged by slurry, so that the product reliability is improved, the resistor core is fixed in the middle of the aluminum shell, the problem that the withstand voltage is reduced due to the movement of the resistor core in the production process is prevented, and the withstand voltage performance is improved.

Description

Technical Field

[0001] The invention belongs to the field related to resistor processing technology, and more specifically relates to an aluminum shell resistor and a processing device thereof. Background Art

[0002] With the development of economy and the progress of society, the requirements for resistors in various industrial production fields are getting higher and higher. This product is a resistor used in large-scale mechanical equipment, load testing, power supply, inverter, servo motor and high-demand harsh industrial control environment. The main features are high power, firm installation, vibration resistance, good heat dissipation, beautiful appearance, and it is an ideal supporting product for power electronics.

[0003] The patent document with the announcement number CN112750583B records an aluminum shell resistor, including an aluminum shell, the aluminum shell is a hollow square tube, a mica frame is arranged in the center of the aluminum shell; alloy wire is wound around the outer side of the mica frame, welding caps are arranged at both ends of the mica frame, lead pieces are arranged on the outer sides of the two welding caps, end caps are arranged at both ends of the aluminum shell, and the lead pieces extend out of the end caps; the alloy wire, welding caps and lead pieces are welded and fixed to each other. The lead pieces at both ends can be covered when not in use, so as to protect and prevent dust from the lead pieces, and the lead pieces can be exposed through the second rotating shaft when in use, so as not to affect the use. At the same time, through the cooperation of the first gear, the tooth surface of the lead piece, the first tooth plate and other results, the lead length of the lead piece can be adaptively adjusted to meet the application, avoid long exposure to the outside, and avoid the influence of external impact on the lead piece.

[0004] Usually, this type of resistor product consists of a resistor core and lead wires. The resistor core is directly placed inside the aluminum shell and filled with heat-resistant fillers, which makes it difficult to center the internal resistor core, reducing the insulation performance of the product. The product is led out by high-temperature leads, which are easily damaged during production and transportation, and are also prone to causing product performance degradation and scrapping, reducing the shock resistance and stability of the resistor; secondly, during the processing of the aluminum shell resistor, the aluminum shell and the resistor core are filled by sand filling, while the traditional device cannot complete the sand filling operation of multiple groups of aluminum shell resistors at the same time, and after the sand filling operation, the internal compactness of the quartz sand is poor. Under the action of external force, the internal quartz sand of the aluminum shell resistor is prone to shaking, making it impossible for the quartz sand to tightly wrap the resistor core, reducing its heat dissipation effect and affecting the stability of the aluminum shell resistor when used. Summary of the invention

[0005] The purpose of the present invention is to provide an aluminum shell resistor and a processing device thereof, which can solve the existing problems.

[0006] The problem to be solved by the present invention is:

[0007] 1. Usually this type of resistor product consists of a resistor core and lead wires. The resistor core is directly placed inside the aluminum shell and filled with heat-resistant fillers, which makes it difficult to center the internal resistor core, reducing the insulation performance of the product. The product is led out by high-temperature leads, which are easily damaged during production and transportation, and are also prone to product performance degradation and scrapping, reducing the shock resistance and stability of the resistor; secondly, during the processing of aluminum shell resistors, the aluminum shell and the resistor core are filled by sand filling, while traditional devices cannot complete the sand filling operation of multiple groups of aluminum shell resistors at the same time. After the sand filling operation, the internal compactness of the quartz sand is poor. Under the action of external force, the internal quartz sand of the aluminum shell resistor is prone to shaking, making it impossible for the quartz sand to tightly wrap the resistor core, reducing its heat dissipation effect and affecting the stability of the aluminum shell resistor during use.

[0008] The purpose of the present invention can be achieved through the following technical solutions:

[0009] An aluminum shell resistor comprises an aluminum shell and a resistor core, wherein the resistor core is fixedly installed at the middle position of the inner side of the aluminum shell, screws are fixedly installed at the middle position of the outer surfaces of both ends of the resistor core, connecting pieces used in conjunction with the screws are fixedly installed at both ends of the aluminum shell, quartz sand is filled between the aluminum shell and the resistor core, and a cylindrical mica block is installed between the screw and the resistor core.

[0010] As a further technical solution of the present invention, the screw rod and the connecting piece as well as the screw rod and the resistor core are fixed by nuts, an elastic gasket is arranged between the screw and the nut, sealing materials are arranged on the inner sides of both ends of the aluminum shell, and the outer surface of the resistor core is wrapped with alloy wire. The original aluminum shell resistors mostly use high-temperature wires as the lead-out structure, and the wires are easily damaged, resulting in a decrease in electrical performance. The aluminum shell resistor uses a screw rod as the lead-out structure, and the two ends are changed to slurry packaging, and the sealing material is slurry, which increases product reliability. Compared with traditional high-temperature wires, the screw rod will not break or break. Secondly, the resistor core is fixed in the middle position of the aluminum shell by positioning the cylindrical mica block and the screw rod and mica internally, and quartz sand is filled at the same time to support and fix the resistor core and the aluminum shell, so that the resistor core is fixed in the internal position of the aluminum shell, which prevents the problem of reduced voltage resistance due to the movement of the resistor core during the production process, thereby improving the voltage resistance performance.

[0011] As a further technical solution of the present invention, it includes a fixed base and a sand filling box, the sand filling box is fixedly installed above the fixed base, a storage box is fixedly installed on the outer surface of one side of the fixed base, a limit clamping seat for loading the aluminum shell is installed in the middle position of the upper end of the fixed base, and both ends of the limit clamping seat are provided with concave grooves for cooperating with the screw, and a sand filling piece is movably installed in the middle of the lower end of the sand filling box. When the aluminum shell resistor is sand-filled, the processing device can be used to complete the sand filling operation of three groups of aluminum shell resistors at one time. The user respectively inserts the aluminum shells of the three groups of aluminum shell resistors into the three notches of the limit clamping seat, and then clamps the extended screw in the concave groove. Three groups of lifting nozzles can be used to simultaneously fill the interior of the three groups of aluminum shells with sand, and the aluminum shells can be taken out of the limit clamping seat by the screw.

[0012] As a further technical solution of the present invention, a collecting tray for use with a limiting clamp is provided in the middle of the upper end of the fixed base. The collecting tray is generally concave in structure, and the inner discharge port of the collecting tray, the collecting tray and the limiting clamp are elastically connected by a spring. After quartz sand is poured into the space between the aluminum shell and the resistor core, in order to make the quartz sand more compact, the vibrator is started to drive the limiting clamp to vibrate, thereby vibrating the aluminum shell in the limiting clamp. Under the action of vibration, the quartz sand in the aluminum shell continuously collides and seeks a more stable equilibrium position. Since the surface of the quartz sand is rough and the shape is irregular, they will get stuck to each other, such as the concave and convex parts complement each other, thereby reducing the gaps between the particles, increasing the overall density, and improving the sand filling effect in the aluminum shell. The quartz sand in the aluminum shell is prevented from shaking under the action of external force, and the excess quartz sand will be collected through the discharge port of the collecting tray.

[0013] As a further technical solution of the present invention, a vibrator is fixedly installed at the middle position of the outer surface of the lower end of the limiting bracket, and a return pipe is fixedly installed at the bottom of the collecting tray. The feed end of the return pipe is connected with the discharge port of the collecting tray, and the discharge end of the return pipe is placed on the inner side of the storage box. When the sand filling part performs sand filling operation on the interior of the aluminum shell, part of the quartz sand will overflow outward, and the collecting tray can be used to collect the overflowed quartz sand. The inclined structure on the inner side of the collecting tray allows the quartz sand to slide down to the discharge port and enter into the interior of the return pipe, and then be discharged into the storage box again through the inclined return pipe. The storage box arranged at the bottom can facilitate users to add quartz sand.

[0014] As a further technical solution of the present invention, a sealing cover is provided at the bottom of the limit card seat for use with a collection tray, and a docking portion is provided at the upper end of the collection tray for use with the sealing cover. The overall structure of the docking portion is in the shape of a U.S. square. In order to prevent the quartz sand in the collection tray from being discharged from the middle notch, the docking portion and the sealing cover are arranged so that the docking portion and the sealing cover are movably docked up and down, thereby forming a staggered sealing structure between the limit card seat and the collection tray, which can not only ensure the vibration use of the limit card seat, but also prevent the limit card seat from transmitting the vibration to the collection tray.

[0015] As a further technical solution of the present invention, the sand filling component includes three groups of lifting nozzles and telescopic tubes. Three groups of discharge grooves are arranged on the inner side of the telescopic tube. The three groups of lifting nozzles are installed at the lower end of the telescopic tube. The lifting nozzles and the sand filling box are driven by a lifting rod. In order to avoid dust during the sand filling operation, a sand filling component with a lifting structure is arranged. During the sand filling operation, the lifting rod can be used to drive the telescopic tube to move downward to adjust the use height of the three groups of lifting nozzles. The arrangement of the three groups of lifting nozzles can simultaneously meet the sand filling operation of three groups of aluminum shell resistors.

[0016] As a further technical solution of the present invention, a main feed roller is movably installed inside the sand filling box, and a driving member used in conjunction with the sand filling member is provided in the middle of the sand filling box. The setting of the driving member can simultaneously meet the sand discharge operations of three groups of lifting nozzles, and the setting of the main feed roller can prevent quartz sand from being blocked inside the sand filling box.

[0017] As a further technical solution of the present invention, three groups of secondary feed rollers are movably installed on the inner side of the driving member, and one end of the secondary feed rollers and the main feed rollers are independently driven by motors. The rotation of the secondary feed rollers and the main feed rollers can be independently controlled by the motor, thereby individually controlling the three groups of lifting nozzles.

[0018] As a further technical solution of the present invention, a feed pipe is arranged between the material storage box and the sand filling box, and a feed auger is movably installed inside the feed pipe. A discharge nozzle is provided at the upper end of the feed pipe. The user pours quartz sand into the material storage box and drives the feed auger to operate by a motor, so that the feed auger drives the quartz sand to move upward, and then the sand is discharged into the sand filling box through the discharge nozzle, and the sand filling operation is performed from top to bottom through the sand filling box.

[0019] Beneficial effects of the present invention:

[0020] 1. By setting screws and quartz sand, when the aluminum shell resistor is used, it replaces the traditional wire connection structure, so that the resistor core is in a stable and centered state, improves its insulation performance, and avoids the lead wire from being damaged during production and transportation;

[0021] During operation, the original aluminum shell resistors mostly use high temperature wires as the lead-out structure, and the wires are easily damaged, resulting in a decrease in electrical performance. The aluminum shell resistors use screws as the lead-out structure, and the two ends are changed to slurry packaging, and the sealing material is slurry, which increases the reliability of the product. Compared with the traditional high temperature wire, the screw will not break or break. Secondly, the resistor core is fixed in the middle position of the aluminum shell by positioning the cylindrical mica block and the screw and mica internally. At the same time, quartz sand is filled to support and fix the resistor core and the aluminum shell, so that the resistor core is fixed in the internal position of the aluminum shell, preventing the problem of reduced withstand voltage caused by the movement of the resistor core during the production process, and improving the withstand voltage performance. The filling of quartz sand can make up for the gap between the resistor core and the aluminum shell. The main function of filling sand inside the aluminum shell resistor is to improve the heat dissipation performance and enhance the mechanical stability. Sand filling can prevent the resistor core from loosening during transportation or vibration, such as the metal wire or ceramic matrix of the wirewound resistor, to avoid poor contact or short circuit caused by displacement. The friction between the sand particles can absorb external vibration energy and reduce the damage of mechanical stress to the internal structure of the resistor.

[0022] 2. By setting the limit card seat and the sand filling piece, when the aluminum shell resistor is subjected to the sand filling operation, it can simultaneously meet the sand filling operation of multiple groups of aluminum shell resistors, thereby improving its work efficiency, making the sand filling more compact and improving its sand filling effect;

[0023] When in use, the aluminum shells of the three groups of aluminum shell resistors are respectively inserted into the three notches of the limit clamping seat, and the extended screw is clamped in the concave groove. The three groups of lifting nozzles can be used to simultaneously fill sand into the interior of the three groups of aluminum shells, and the aluminum shells can be taken out from the limit clamping seat through the screw. In order to avoid dust during the sand filling operation, a sand filling piece of the lifting structure is provided. During the sand filling operation, the lifting rod can be used to drive the telescopic tube to move downward to adjust the use height of the three groups of lifting nozzles. The setting of the three groups of lifting nozzles can simultaneously meet the sand filling operation of the three groups of aluminum shell resistors. The setting of the driving piece can simultaneously meet the sand discharge operation of the three groups of lifting nozzles, and the setting of the main feeding roller can In order to avoid quartz sand being blocked inside the sand filling box, the motor can independently control the rotation of the secondary feed roller and the main feed roller, so as to individually control the three sets of lifting nozzles. By starting the vibrator, the vibrator drives the limit card seat to vibrate, so as to make the aluminum shell in the limit card seat vibrate. The quartz sand in the aluminum shell constantly collides under the action of vibration and seeks a more stable equilibrium position. Since the surface of the quartz sand is rough and the shape is irregular, they will get stuck to each other, such as the concave and convex parts complement each other, thereby reducing the gaps between the particles, increasing the overall density, and improving the sand filling effect in the aluminum shell. It is avoided that the quartz sand in the aluminum shell shakes under the action of external force, making the quartz sand filling more compact.

[0024] 3. By setting a collecting tray and a return pipe, when the aluminum shell resistor is subjected to sand filling processing, the use of the limit holder and the sand filling parts is optimized, so that it has a sand recovery structure and reduces the subsequent cleaning steps;

[0025] During operation, when the sand filling part is filling the interior of the aluminum shell with sand, part of the quartz sand will overflow outward, and the collecting tray can be used to collect the overflowed quartz sand. The inclined structure on the inner side of the collecting tray allows the quartz sand to slide down to the discharge port and enter the interior of the return pipe, and is re-discharged into the storage box through the inclined return pipe. The motor drives the feed auger to operate, so that the feed auger drives the quartz sand to move upward, and then is discharged into the interior of the sand filling box through the discharge nozzle, and the sand filling operation is performed from top to bottom through the sand filling box. Secondly, in order to prevent the quartz sand in the collecting tray from being discharged from the middle notch, a docking part and a sealing card cover are provided, so that the docking part and the sealing card cover are movably docked up and down, and a staggered sealing structure is formed between the limit card seat and the collecting tray, which can not only ensure the vibration use of the limit card seat, but also prevent the limit card seat from transmitting the vibration to the collecting tray. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Figure 1 It is a schematic diagram of the overall structure of an aluminum shell resistor of the present invention;

[0028] Figure 2 It is an internal structure diagram of an aluminum shell resistor of the present invention;

[0029] Figure 3 It is an overall structural diagram of a processing device for aluminum shell resistors of the present invention;

[0030] Figure 4 It is a planar structural diagram of a sand-filling part in a processing device for an aluminum shell resistor of the present invention;

[0031] Figure 5 It is a planar structural diagram of a driving component in a processing device for an aluminum shell resistor of the present invention;

[0032] Figure 6 It is an overall structural diagram of a material collecting tray in a processing device for aluminum shell resistors of the present invention;

[0033] Figure 7 It is an overall structural diagram of a limit clamping seat in a processing device for an aluminum shell resistor of the present invention;

[0034] Figure 8 It is a planar structural diagram of a material conveying pipe in a processing device for an aluminum shell resistor of the present invention;

[0035] Fig. 9It is a state change diagram of an aluminum shell resistor and a limit clamping seat in a working device of the present invention when in use;

[0036] Fig.10 This is an internal structure diagram of an aluminum shell resistor and a lifting nozzle in a working device of the present invention;

[0037] Fig.11 The present invention is a diagram of the state changes of an aluminum shell resistor and a baffle in a working device when the baffle is in use.

[0038] In the figure: 1. aluminum shell; 2. screw; 3. sealing material; 4. quartz sand; 5. alloy wire; 6. resistor core; 7. elastic gasket; 8. cylindrical mica block; 9. nut; 10. connecting piece; 11. fixed base; 12. storage box; 13. sand filling box; 14. driving part; 15. limit card seat; 16. collecting plate; 17. feeding pipe; 18. sand filling part; 19. discharge nozzle; 20. main feeding roller; 21. lifting nozzle; 22. telescopic tube; 23. lifting rod; 24. discharge trough; 25. secondary feeding roller; 26. motor; 27. return pipe; 28. spring; 29. ​​vibrator; 30. docking part; 31. sealing card cover; 32. concave groove; 33. feeding auger; 34. top cover; 35. baffle; 36. tension spring; 37. rotating rod; 38. arc slide. DETAILED DESCRIPTION

[0039] The technical scheme of the present invention will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] like Figure 1 -like Figure 2 As shown, an aluminum shell resistor comprises an aluminum shell 1 and a resistor core 6, wherein the resistor core 6 is fixedly mounted at the middle position of the inner side of the aluminum shell 1, screws 2 are fixedly mounted at the middle position of the outer surfaces of both ends of the resistor core 6, connecting pieces 10 used in conjunction with the screws 2 are fixedly mounted at both ends of the aluminum shell 1, quartz sand 4 is filled between the aluminum shell 1 and the resistor core 6, a cylindrical mica block 8 is installed between the screw 2 and the resistor core 6, and a top cover 34 is arranged at the upper end of the aluminum shell 1. When the interior of the aluminum shell resistor is filled with sand, the top cover 34 at the upper end of the aluminum shell 1 is opened, so that the upper end of the aluminum shell 1 is open, and the sand filling operation is performed above the aluminum shell 1.

[0041] The screw 2 and the connecting piece 10 as well as the screw 2 and the resistor core 6 are fixed by a nut 9, an elastic gasket 7 is arranged between the screw 2 and the nut 9, and sealing materials 3 are arranged on the inner sides of both ends of the aluminum shell 1. The outer surface of the resistor core 6 is wound with an alloy wire 5. The original aluminum shell resistors mostly use high-temperature wires as the lead-out structure, and the wires are easily damaged, resulting in a decrease in electrical performance. The aluminum shell resistor uses the screw 2 as the lead-out structure, and the two ends are changed to slurry packaging. The sealing material 3 is slurry, which increases the product reliability. Compared with the traditional high-temperature wire, the screw 2 will not break or break. Secondly, the resistor core 6 is fixed in the middle position of the aluminum shell 1 by positioning the cylindrical mica block 8 and the screw 2 and the mica internally, and quartz sand 4 is filled at the same time to support and fix the resistor core 6 and the aluminum shell 1, so that the resistor core 6 is fixed in the internal position of the aluminum shell 1, which prevents the problem of reduced voltage resistance due to the movement of the resistor core 6 during the production process, thereby improving the voltage resistance performance.

[0042] like Figure 3 -like Fig.11 As shown, a processing device for aluminum shell resistors includes a fixed base 11 and a sand filling box 13. The sand filling box 13 is fixedly installed above the fixed base 11. A storage box 12 is fixedly installed on the outer surface of one side of the fixed base 11. A limit clamping seat 15 for loading the aluminum shell 1 is installed in the middle position of the upper end of the fixed base 11, and both ends of the limit clamping seat 15 are provided with concave grooves 32 used to cooperate with the screw 2. A sand filling piece 18 is movably installed in the middle of the lower end of the sand filling box 13. When the aluminum shell resistor is sand-filled, the processing device can be used to complete the sand filling operation of three groups of aluminum shell resistors at one time. The user inserts the aluminum shells 1 of the three groups of aluminum shell resistors into the three notches of the limit clamping seat 15 respectively, and then clamps the extended screw 2 in the concave groove 32. Three groups of lifting nozzles 21 can be used to simultaneously fill sand into the interior of the three groups of aluminum shells 1, and the aluminum shell 1 can be taken out from the limit clamping seat 15 by the screw 2.

[0043] In order to improve the sand filling effect, Figure 6As shown, a collecting tray 16 for use with a limiting card seat 15 is provided in the middle of the upper end of the fixed base 11. The collecting tray 16 is an overall concave structure, and the inner discharge port of the collecting tray 16, the collecting tray 16 and the limiting card seat 15 are elastically connected by a spring 28. After the quartz sand 4 is poured into the space between the aluminum shell 1 and the resistor core 6, in order to make the quartz sand 4 more compact, the vibrator 29 is started to drive the limiting card seat 15 to vibrate, thereby causing the aluminum shell 1 in the limiting card seat 15 to vibrate. Under the action of vibration, the quartz sand 4 in the aluminum shell 1 constantly collides and seeks a more stable equilibrium position. Since the surface of the quartz sand 4 is rough and the shape is irregular, they will get stuck to each other, such as the concave and convex parts complement each other, thereby reducing the gaps between the particles, improving the overall density, and improving the sand filling effect in the aluminum shell 1. It is avoided that the quartz sand 4 in the aluminum shell 1 shakes under the action of external force, and the excess quartz sand 4 will be collected through the discharge port of the collecting tray 16.

[0044] A vibrator 29 is fixedly installed at the middle position of the outer surface of the lower end of the limiting holder 15, and a return pipe 27 is fixedly installed at the bottom of the collecting tray 16. The feed end of the return pipe 27 is connected to the discharge port of the collecting tray 16, and the discharge end of the return pipe 27 is placed on the inner side of the storage box 12. When the sand filling part 18 performs sand filling operation on the interior of the aluminum shell 1, part of the quartz sand 4 will overflow outward, and the collecting tray 16 can be used to collect the overflowed quartz sand 4. The inclined structure on the inner side of the collecting tray 16 allows the quartz sand 4 to slide down to the discharge port and enter the interior of the return pipe 27, and then be discharged into the storage box 12 again through the inclined return pipe 27. The storage box 12 set at the bottom can facilitate users to add quartz sand 4.

[0045] like Figure 7 As shown, a sealing cover 31 is provided at the bottom of the limit card seat 15 for use with the collecting tray 16, and a docking portion 30 is provided at the upper end of the collecting tray 16 for use with the sealing cover 31. The docking portion 30 is in a U-shaped structure as a whole. In order to prevent the quartz sand 4 in the collecting tray 16 from being discharged from the central notch, the docking portion 30 and the sealing cover 31 are provided so that the docking portion 30 and the sealing cover 31 are movably docked up and down, and a staggered sealing structure is formed between the limit card seat 15 and the collecting tray 16, which can ensure that the limit card seat 15 is used in vibration and prevent the limit card seat 15 from transmitting the vibration to the collecting tray 16.

[0046] like Figure 4As shown, the sand filling component 18 includes three groups of lifting nozzles 21 and telescopic tubes 22. Three groups of discharge grooves 24 are arranged on the inner side of the telescopic tubes 22. The three groups of lifting nozzles 21 are all installed at the lower end of the telescopic tubes 22. The lifting nozzles 21 and the sand filling box 13 are driven by lifting rods 23. In order to avoid dust during the sand filling operation, the sand filling component 18 with a lifting structure is provided. During the sand filling operation, the lifting rods 23 can be used to drive the telescopic tubes 22 to move downward to adjust the use height of the three groups of lifting nozzles 21. The setting of the three groups of lifting nozzles 21 can simultaneously meet the sand filling operation of three groups of aluminum shell resistors.

[0047] A main feed roller 20 is movably installed inside the sand filling box 13. A driving member 14 used in conjunction with the sand filling member 18 is provided in the middle of the sand filling box 13. The setting of the driving member 14 can simultaneously meet the sand discharge operations of three groups of lifting nozzles 21, and the setting of the main feed roller 20 can prevent the quartz sand 4 from being blocked inside the sand filling box 13.

[0048] Three groups of secondary feed rollers 25 are movably installed on the inner side of the driving member 14. The secondary feed rollers 25 and one end of the main feed roller 20 are independently driven by a motor 26. The motor 26 can independently control the rotation of the secondary feed rollers 25 and the main feed roller 20, thereby individually controlling the three groups of lifting nozzles 21.

[0049] It should be understood that if structures such as the baffle 35 are not provided, due to the small gap between the resistor core 6 and the aluminum shell 1, when filling the sand, the sand will fall from the lifting nozzle 21, and most of the sand will be blocked by the resistor core 6, thereby being retained on the upper part of the resistor core 6. As a result, it is necessary to pause the input of the sand after each portion of the sand is poured in, and continue to transport the sand after the sand on the upper part of the resistor core 6 has completely fallen into the gap between the aluminum shell 1 and the resistor core 6, resulting in low sand filling efficiency.

[0050] Therefore, in order to improve the efficiency of the sand tank, two groups of baffles 35 used in conjunction with the resistor core 6 are movably installed inside the lifting nozzle 21. The two groups of baffles 35 are elastically connected by a tension spring 36. The lower end of the baffle 35 is an inclined structure. One end of the baffle 35 is movably connected to the lifting nozzle 21 through a rotating rod 37, and the other end of the baffle 35 is movably connected to the lifting nozzle 21 through an arc-shaped slide groove 38. The setting of the arc-shaped slide groove 38 can limit the rotation direction of the baffle 35, so that the baffle 35, under the action of its own gravity and the tension spring 36, Keeping the vertical downward state, two baffles 35 that rotate relative to each other are added in the lifting nozzle 21. The two groups of baffles 35 are connected by tension springs 36. The lower ends of the baffles 35 have guiding slopes. When the lifting nozzle 21 descends into the aluminum shell 1, the guiding slopes of the baffles 35 act on the resistor core 6, thereby forcing the two baffles 35 to open automatically, making it easier for sand to be quickly discharged from the gaps on both sides, thereby improving the efficiency of filling sand. When it is almost finished, the lifting nozzle 21 rises, and the two baffles 35 gradually close under the action of the tension springs 36, thereby filling the upper end of the resistor core 6 with sand.

[0051] A feeding pipe 17 is provided between the material storage box 12 and the sand filling box 13, and a feeding auger 33 is movably installed inside the feeding pipe 17. A discharge nozzle 19 is provided at the upper end of the feeding pipe 17. The user pours quartz sand 4 into the material storage box 12, and drives the feeding auger 33 to operate through a motor, so that the feeding auger 33 drives the quartz sand 4 to move upward, and then the quartz sand is discharged into the sand filling box 13 through the discharge nozzle 19, and the sand filling operation is performed from top to bottom through the sand filling box 13.

[0052] When in use, this type of resistor product is usually composed of a resistor core 6 and lead wires. The resistor core 6 is directly placed inside the aluminum shell and filled with heat-resistant fillers, which makes it difficult for the internal resistor core 6 to be centered, reducing the insulation performance of the product. In addition, the product is led out by high-temperature leads, which are easily damaged during production and transportation, and are also prone to causing product performance degradation and scrapping, reducing the shock resistance and stability of the resistor; secondly, during the processing of the aluminum shell resistor, the aluminum shell and the resistor core 6 are filled by sand filling, and the traditional device cannot complete the sand filling operation of multiple groups of aluminum shell resistors at the same time, and after the sand filling operation, the internal compactness of the quartz sand 4 is poor. Under the action of external force, the internal quartz sand 4 of the aluminum shell resistor is prone to shaking, making it impossible for the quartz sand 4 to tightly wrap the resistor core 6, reducing its heat dissipation effect and affecting the stability of the aluminum shell resistor when in use;

[0053] To this end, by setting the screw 2 and the quartz sand 4, when the aluminum shell resistor is used, the traditional wire connection structure is replaced, so that the resistor core 6 is in a stable and centered state, the insulation performance is improved, and the lead wire is prevented from being damaged during the production and transportation process;

[0054] During operation, the original aluminum shell resistors mostly use high temperature wires as the lead-out structure, and the wires are easily damaged, resulting in a decrease in electrical performance. The aluminum shell resistor uses a screw 2 as the lead-out structure, and the two ends are changed to slurry packaging. The sealing material 3 is slurry, which increases the reliability of the product. Compared with the traditional high temperature wire, the screw 2 will not break or break. Secondly, the resistor core 6 is fixed in the middle position of the aluminum shell 1 by positioning the cylindrical mica block 8 and the screw 2 and the mica inside. At the same time, quartz sand 4 is filled to support and fix the resistor core 6 and the aluminum shell 1, so that the resistor core 6 is fixed in the aluminum shell. The internal position of the body 1 is fixed, which prevents the problem of voltage resistance reduction caused by the movement of the resistor core 6 during the production process, and improves the voltage resistance performance. The filling of quartz sand 4 can make up for the gap between the resistor core 6 and the aluminum shell 1. The main function of filling the sand inside the aluminum shell resistor is to improve the heat dissipation performance and enhance the mechanical stability. The sand filling can prevent the resistor core 6 from loosening during transportation or vibration, such as the metal wire or ceramic matrix of the wire-wound resistor, to avoid poor contact or short circuit caused by displacement. The friction between the sand particles can absorb external vibration energy and reduce the damage of mechanical stress to the internal structure of the resistor;

[0055] By providing the limit clamp 15 and the sand filling member 18, when the aluminum shell resistor is subjected to the sand filling operation, the sand filling operation of multiple groups of aluminum shell resistors can be simultaneously satisfied, thereby improving the working efficiency, making the sand filling more compact, and improving the sand filling effect;

[0056] When the interior of the aluminum shell resistor is filled with sand, the top cover 34 at the upper end of the aluminum shell 1 is opened, so that the upper end of the aluminum shell 1 is open, and the sand filling operation is performed above the aluminum shell 1;

[0057] When in use, the aluminum shells 1 of the three groups of aluminum shell resistors are respectively inserted into the three notches of the limit clamping seat 15, and the extended screw 2 is clamped in the concave groove 32. The three groups of lifting nozzles 21 can be used to simultaneously fill the interior of the three groups of aluminum shells 1 with sand, and the aluminum shells 1 can be taken out of the limit clamping seat 15 through the screw 2. In order to avoid dust during the sand filling operation, a sand filling piece 18 of a lifting structure is provided. During the sand filling operation, the lifting rod 23 can be used to drive the telescopic tube 22 to move downward to adjust the use height of the three groups of lifting nozzles 21. The setting of the three groups of lifting nozzles 21 can simultaneously meet the sand filling operation of the three groups of aluminum shell resistors. The setting of the driving member 14 can simultaneously meet the sand discharge operation of the three groups of lifting nozzles 21, and the setting of the main feeding roller 20, The quartz sand 4 can be prevented from being blocked inside the sand filling box 13. The motor 26 can be used to independently control the rotation of the secondary feed roller 25 and the main feed roller 20, so that the three groups of lifting nozzles 21 can be individually controlled. By starting the vibrator 29, the vibrator 29 drives the limit card seat 15 to vibrate, thereby causing the aluminum shell 1 in the limit card seat 15 to vibrate. The quartz sand 4 in the aluminum shell 1 constantly collides under the action of vibration and seeks a more stable equilibrium position. Since the surface of the quartz sand 4 is rough and the shape is irregular, they will get stuck to each other, such as the concave and convex parts complement each other, thereby reducing the gaps between the particles, increasing the overall density, and improving the sand filling effect in the aluminum shell 1. It is avoided that the quartz sand 4 in the aluminum shell 1 shakes under the action of external force, making the quartz sand more compact.

[0058] By providing the collecting tray 16 and the return pipe 27, when the aluminum shell resistor is subjected to the sand filling processing operation, the use of the limit clamping seat 15 and the sand filling piece 18 is optimized, so that it has a sand body recovery structure, and the subsequent cleaning steps are reduced;

[0059] During operation, when the sand filling member 18 performs sand filling operation on the interior of the aluminum shell 1, part of the quartz sand 4 will overflow, and the overflowing quartz sand 4 can be collected by the collecting tray 16. The inclined structure inside the collecting tray 16 allows the quartz sand 4 to slide down to the discharge port and enter the interior of the return pipe 27. The quartz sand 4 is discharged into the storage box 12 through the inclined return pipe 27. The feeding auger 33 is driven by the motor to operate, so that the feeding auger 33 drives the quartz sand 4 to move upward, thereby passing through the discharge port. 19 is discharged into the interior of the sand filling box 13, and the sand filling operation is performed from top to bottom through the sand filling box 13. Secondly, in order to prevent the quartz sand 4 in the collecting tray 16 from being discharged from the central gap, a docking portion 30 and a sealing card cover 31 are arranged, so that the docking portion 30 and the sealing card cover 31 are movably docked up and down, and a staggered sealing structure is formed between the limit card seat 15 and the collecting tray 16, which can ensure the vibration use of the limit card seat 15 and prevent the limit card seat 15 from transmitting the vibration to the collecting tray 16.

[0060] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An aluminum shell resistor, characterized in that: The invention comprises an aluminum shell (1) and a resistor core (6), wherein the resistor core (6) is fixedly mounted at the middle position of the inner side of the aluminum shell (1), screw rods (2) are fixedly mounted at the middle position of the outer surfaces of both ends of the resistor core (6), connecting plates (10) used in conjunction with the screw rods (2) are fixedly mounted at both ends of the aluminum shell (1), quartz sand (4) is filled between the aluminum shell (1) and the resistor core (6), a cylindrical mica block (8) is mounted between the screw rods (2) and the resistor core (6), and a top cover (34) used during the top sand filling operation is arranged at the upper end of the aluminum shell (1).

2. The processing device for aluminum shell resistor according to claim 1, characterized in that: The invention comprises a fixed base (11) and a sand filling box (13), wherein the sand filling box (13) is fixedly mounted above the fixed base (11), a material storage box (12) is fixedly mounted on an outer surface of one side of the fixed base (11), a limit clamping seat (15) for loading an aluminum shell (1) is mounted at the middle position of the upper end of the fixed base (11), and both ends of the limit clamping seat (15) are provided with concave grooves (32) for matching with a screw rod (2), and a sand filling piece (18) is movably mounted at the middle of the lower end of the sand filling box (13).

3. The processing device for aluminum shell resistor according to claim 2, characterized in that: A collecting plate (16) for use with the limiting clamping seat (15) is provided at the middle of the upper end of the fixed base (11); the collecting plate (16) is of an overall concave structure, and the inner discharge opening of the collecting plate (16), the collecting plate (16) and the limiting clamping seat (15) are elastically connected via a spring (28).

4. The processing device for aluminum shell resistor according to claim 3, characterized in that: A vibrator (29) is fixedly mounted at the middle position of the outer surface of the lower end of the limiting clamp (15), and a return pipe (27) is fixedly mounted at the bottom of the collecting tray (16), the feed end of the return pipe (27) is connected to the discharge port of the collecting tray (16), and the discharge end of the return pipe (27) is placed on the inner side of the storage box (12).

5. The processing device for aluminum shell resistor according to claim 4, characterized in that: The bottom of the position limiting seat (15) is provided with a sealing cover (31) used in conjunction with the material collecting tray (16), and the upper end of the material collecting tray (16) is provided with a docking portion (30) used in conjunction with the sealing cover (31), and the docking portion (30) is in a square shape as a whole.

6. The processing device for aluminum shell resistor according to claim 2, characterized in that: The sand filling component (18) comprises three groups of lifting nozzles (21) and a telescopic tube (22). Three groups of discharge grooves (24) are arranged on the inner side of the telescopic tube (22). The three groups of lifting nozzles (21) are all installed at the lower end of the telescopic tube (22). The lifting nozzles (21) and the sand filling box (13) are driven by a lifting rod (23).

7. The processing device for aluminum shell resistor according to claim 2, characterized in that: A main material feeding roller (20) is movably installed inside the sand filling box (13), and a driving member (14) used in conjunction with the sand filling member (18) is provided in the middle of the sand filling box (13).

8. The processing device for aluminum shell resistor according to claim 7, characterized in that: Three groups of secondary material feeding rollers (25) are movably mounted on the inner side of the driving member (14), and one end of the secondary material feeding rollers (25) and the main material feeding roller (20) are independently driven by a motor (26).

9. The processing device for aluminum shell resistor according to claim 2, characterized in that: A material delivery pipe (17) is arranged between the material storage box (12) and the sand filling box (13), a material delivery auger (33) is movably installed inside the material delivery pipe (17), and a discharge nozzle (19) is arranged at the upper end of the material delivery pipe (17).

10. The processing device for aluminum shell resistor according to claim 6, characterized in that: Two groups of baffles (35) used in conjunction with the resistor core (6) are movably installed inside the lifting nozzle (21), and the two groups of baffles (35) are elastically connected by a tension spring (36). The lower end of the baffle (35) is an inclined structure, and one end of the baffle (35) is movably connected to the lifting nozzle (21) by a rotating rod (37), and the other end of the baffle (35) is movably connected to the lifting nozzle (21) by an arc-shaped sliding groove (38).

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