Motor stator with pin structure

Abstract

The utility model discloses a motor stator with a pin structure, which relates to the technical field of motor machinery and comprises a motor shell, a motor stator body is coaxially and fixedly mounted in the motor shell, bearing bodies are fixedly mounted at the front end and the rear end of the motor shell, and the bearing bodies and the motor shell are fixedly mounted through a plurality of positioning pins. According to the utility model, the bearing body and the motor shell are firmly connected in a manner that the positioning pin is inserted into the fixed slot in a penetrating manner, so that looseness is avoided, and the anti-falling effect is further enhanced by the blocking ring at the tail end of the positioning pin, so that the service life of the bearing body is prolonged, and the service life of the bearing body and the motor shell is prolonged. Meanwhile, a limiting plate is automatically attached through the action of a torsional spring, secondary locking of a positioning pin is achieved, and when disassembly is needed, the positioning pin can be rapidly released only by pulling a pulling ring, so that convenient disassembly and assembly of the bearing body are achieved, the maintenance efficiency of the device is improved, meanwhile, an automatic temperature control system and an intelligent water cooling assembly are arranged, and the maintenance efficiency is improved. And the stability and the heat dissipation efficiency of the motor are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor machinery, and particularly relates to a motor stator with a pin structure. Background Art

[0002] Some pumps applied in the field of low vibration and low noise require the motor and the pump to be coaxial, and have particularly strict requirements for the geometric tolerance after the motor is installed. The motor stator designed conventionally cannot meet the requirements, and a high-precision motor stator that can complete the machining of the two bearing positions of the motor stator and the matching part of the pump in one clamping must be designed to meet the requirements of low vibration and low noise;

[0003] In recent years, in order to improve the structural stability of the stator, reduce the production cost, and optimize the motor performance, more and more new fixing structures have been proposed. Among them, the pin structure has attracted attention in the design of the motor stator due to its convenient assembly, firm connection, and high durability. The pin structure can reduce the use of welding or riveting processes, thereby reducing the problem of material property degradation caused by high temperature or mechanical stress. At the same time, a reasonable pin structure design can improve the vibration resistance of the stator and enhance the overall reliability of the motor;

[0004] However, the existing pin structures still have certain problems in practical applications. For example, the matching accuracy between the pin and the stator core or winding during the assembly process is relatively high, which affects the production efficiency. In addition, some pin structure designs may have the risk of wear or loosening during long-term operation, resulting in a decline in motor performance. Therefore, it is still necessary to further optimize the design of the pin structure to improve the structural stability, assembly convenience, and service life of the motor stator;

[0005] In view of the deficiencies of the existing technology, the present invention proposes an improved motor stator with a pin structure to improve the fastening and stability of the stator structure, optimize the assembly process, reduce the production cost, and enhance the overall performance of the motor.

[0006] After retrieval, it is found that the prior art publication number is CN102111021B, which discloses a drum motor stator structure, including a stator core, end insulation, stator slot paper, and a stator coil winding. The stator slot paper is installed in the stator slots of the stator core, the end insulation is arranged on the two end faces of the stator core, the stator coil winding is wound around the end insulation, and a drum housing is installed on the outer edge of the stator core. The stator core adopts a strip-shaped stator core, and the strip-shaped stator core is bent into a circular ring and installed inside the drum housing. The outer wall of the circular ring-shaped strip stator core is in interference fit with the inner wall of the drum housing. This solution adopts a strip-shaped stator core structure, which increases the volume of the coil winding in the stator slot and improves the slot fill factor in its natural unfolded state, greatly improving the working efficiency of the motor and having very good motor performance.

[0007] Therefore, based on the above retrieval and combined with the existing technology, there is an existing drum motor stator structure. The fastening and stability of the stator structure of this device are not high. At the same time, the motor lacks a heat dissipation device, which is extremely likely to reduce the service life of the motor. Summary of the Invention

[0008] The purpose of the present invention is to provide a pin-structured motor stator to solve the problems raised in the above background technology.

[0009] To achieve the above purpose, the present invention provides the following technical solutions:

[0010] A pin-structured motor stator includes a motor housing. A motor stator body is coaxially and fixedly installed inside the motor housing. Bearing bodies are fixedly installed at both the front and rear ends of the motor housing. The bearing bodies are fixedly installed with the motor housing through a plurality of positioning pins. A temperature sensing component is fixedly installed on the outer wall of the motor housing. Two groups of water cooling components are symmetrically installed on the front and rear of the outer wall of the motor housing.

[0011] Further, a plurality of fixed slots are circumferentially and equidistantly arranged on both the front and rear end faces of the motor housing. A convex ring is provided on the outer wall of the bearing body. A plurality of insertion holes are circumferentially and equidistantly arranged on the end face of the convex ring. The plurality of positioning pins are respectively fixed in the fixed slots after passing through the plurality of insertion holes.

[0012] Further, a limiting plate is hinged to the outer wall of each of the plurality of fixed slots. A torsion spring is installed between the limiting plate and the rotating shaft on the outer wall of the fixed slot.

[0013] Further, a positioning block is provided on the end face of the limiting plate close to the fixed slot. The outer wall size of the positioning block is adapted to the inner wall size of the positioning opening.

[0014] Further, the temperature sensing component includes a storage ring. The inner ring wall of the storage ring abuts against the outer wall of the motor housing. A hydraulic cylinder is fixedly installed on the outer wall of the storage ring.

[0015] Further, the inside of the hydraulic cylinder is communicated with the storage ring. A piston rod is slidably connected inside the hydraulic cylinder. A linkage rod is fixedly installed at the end of the piston rod.

[0016] Further, the water cooling component includes a cooling ring. The inner ring wall of the cooling ring abuts against the outer wall of the motor housing.

[0017] Further, a water outlet and a storage pipe are provided on the outer wall of the cooling ring. A ball valve is installed on the inner wall of the storage pipe. An extension rod is provided on the outer wall of the ball valve.

[0018] Further, a plug-in cylinder is opened on the left end face of the storage pipe. The extension rod is slidably inserted into the plug-in cylinder. After passing through the plug-in cylinder, the extension rod is fixedly connected to the linkage rod.

[0019] Further, a return spring is fixedly installed on the inner wall of the storage pipe. The right end of the return spring abuts against the outer wall of the ball valve. A water inlet pipe is provided on the outer wall of the storage pipe.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] 1. When the present utility model is in use, the bearing body is firmly connected to the motor housing by inserting the positioning pin into the fixing slot, avoiding loosening. The blocking ring at the end of the positioning pin further enhances the anti-detachment effect. At the same time, the limiting plate automatically fits under the action of the torsion spring to achieve secondary locking of the positioning pin. When disassembly is required, only by pulling the pulling ring can the positioning pin be quickly released, thus realizing the convenient disassembly and assembly of the bearing body and improving the maintenance efficiency;

[0022] 2. When the present utility model is in use, the motor temperature is dynamically adjusted by the expansion oil in the storage ring. When the motor temperature rises, the storage ring absorbs heat, causing the expansion oil to expand and push the piston rod to move, and then driving the linkage rod to act, realizing the mechanical transmission of temperature change. This method can respond to the motor temperature change in real time, ensure that the heat dissipation system starts at the appropriate time, improve the cooling efficiency, and prevent the motor from overheating;

[0023] 3. When the present utility model is in use, automatic control is achieved through the ball valve and the return spring. Under normal circumstances, the ball valve remains closed under the action of the return spring to prevent waste of water resources. When the temperature is too high, the linkage rod drives the extension rod to open the ball valve, allowing the cooling water to enter the cooling ring for heat dissipation. When the motor temperature drops, the expansion oil cools and contracts, the piston rod resets, the linkage rod releases the pulling force, and the ball valve closes again under the action of the return spring, stopping the water supply. This design effectively reduces water resource consumption while ensuring the heat dissipation effect and improves the intelligent level of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the overall structure schematic diagram of the present utility model;

[0025] Figure 2 is the overall structure explosion diagram of the present utility model;

[0026] Figure 3 is the structural part drawing of the motor housing of the present utility model;

[0027] Figure 4 is the partial structure schematic diagram of the present utility model;

[0028] Figure 5 is the explosion diagram of the temperature sensing component structure of the present utility model;

[0029] Figure 6 is the explosion diagram of the water cooling component structure of the present utility model;

[0030] Figure 7 is the overall structure sectional view of the present utility model;

[0031] Figure 8 Partial structural cross-section of the present utility model Figure 1 ;

[0032] Figure 9 Partial structural cross-section of the present utility model Figure 2 。

[0033] In the figure:

[0034] 1. Motor housing; 11. Fixed ring; 12. Fixed slot;

[0035] 2. Motor stator body;

[0036] 3. Bearing body;

[0037] 4. Positioning pin; 41. Blocking ring; 42. Positioning port;

[0038] 5. Limiting plate; 51. Positioning block; 52. Pulling ring;

[0039] 6. Temperature sensing component; 61. Storage ring; 62. Hydraulic cylinder; 63. Piston rod; 64. Linking rod;

[0040] 7. Water cooling component; 71. Cooling ring; 711. Water outlet; 712. Storage pipe; 713. Water inlet pipe; 72. Ball valve; 721. Extension rod; 73. Return spring. Specific implementation mode

[0041] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0042] Embodiment 1: Please refer to Figures 1 to 4 、 Figure 8 , a pin-structured motor stator, including a motor housing 1, a motor stator body 2 is coaxially and fixedly installed inside the motor housing 1, bearing bodies 3 are fixedly installed at both the front and rear ends of the motor housing 1. Specifically, fixed rings 11 are provided at both the front and rear ends of the motor housing 1, the inner wall size of the fixed ring 11 is adapted to the outer wall size of the bearing body 3, the fixed ring 11 is sleeved on the outer wall of the bearing body 3, the bearing body 3 is fixedly installed with the motor housing 1 through a plurality of positioning pins 4, a temperature sensing component 6 is fixedly installed on the outer wall of the motor housing 1, and two groups of water cooling components 7 are symmetrically installed at the front and rear of the outer wall of the motor housing 1.

[0043] On both the front and rear end faces of the motor housing 1, a number of fixed slots 12 are equidistantly arranged in a circumferential manner. On the outer wall of the bearing body 3, there is a convex ring. On the end face of the convex ring, a number of insertion holes are equidistantly arranged in a circumferential manner. A number of positioning pins 4 respectively pass through the insertion holes and are fixedly installed in the fixed slots 12. Specifically, on the end faces of a number of fixed slots 12 close to the bearing body 3, sliding holes are opened. The inner wall size of the sliding holes is adapted to the outer wall size of the positioning pins 4. On the rear end face of the positioning pin 4, there is a blocking ring 41. The blocking ring 41 is in close contact with the end face of the bearing body 3 to prevent the bearing body 3 from falling off the outer wall of the motor housing 1. On the outer walls of a number of fixed slots 12, limiting plates 5 are hinged. A torsion spring is installed between the limiting plate 5 and the rotating shaft on the outer wall of the fixed slot 12. Specifically, the torsion spring provides a rotational force to the limiting plate 5, causing the limiting plate 5 to be in contact with the outer wall of the fixed slot 12. On the outer wall of the positioning pin 4, a positioning opening 42 is opened. On the end face of the limiting plate 5 close to the fixed slot 12, there is a positioning block 51. The outer wall size of the positioning block 51 is adapted to the inner wall size of the positioning opening 42. Specifically, on the outer wall of the fixed slot 12, an exposure groove is opened. Please refer to Figure 8 , when the limiting plate 5 is in contact with the outer wall of the fixed slot 12, the positioning block 51 passes through the exposure groove and is clamped and fixed with the positioning opening 42 of the positioning pin 4, so that the positioning pin 4 is fixedly inserted in the fixed slot 12. The positioning pin 4 fixedly connects the bearing body 3 and the motor housing 1. On the end face of the limiting plate 5 away from the fixed slot 12, there is a pulling ring 52. When it is necessary to remove the positioning pin 4, the limiting plate 5 is rotated on the outer wall of the fixed slot 12 through the pulling ring 52, compressing the torsion spring, so that the positioning block 51 is disengaged from the clamping connection with the positioning opening 42, thereby removing the positioning pin 4 and disconnecting the bearing body 3 from the motor housing 1.

[0044] Embodiment 2: Please refer to Figure 2 、 Figures 5 to 7 、 Figure 9 , a stator of a pin-structured motor, which is different from that of Embodiment 1 in that the temperature sensing component 6 includes a storage ring 61. The inner ring wall of the storage ring 61 is in contact with the outer wall of the motor housing 1. On the outer wall of the storage ring 61, a hydraulic cylinder 62 is fixedly installed. The inside of the hydraulic cylinder 62 is communicated with the storage ring 61. A piston rod 63 is slidably connected inside the hydraulic cylinder 62. At the end of the piston rod 63, a linkage rod 64 is fixedly installed. Specifically, the storage ring 61 is made of aluminum alloy, which has good heat conductivity and corrosion resistance. The storage ring 61 stores expansion oil, and the expansion oil has the characteristic of expanding when heated. When the motor body works overheat, the storage ring 61 transfers the heat of the motor body to the expansion oil. The expansion oil expands when heated, and the pressure generated by the expansion oil pushes the piston rod 63 to move inside the hydraulic cylinder 62. The piston rod 63 drives the linkage rod 64 to move synchronously.

[0045] The water-cooling component 7 includes a cooling ring 71. The inner wall of the inner ring of the cooling ring 71 abuts against the outer wall of the motor housing 1. Specifically, the cooling ring 71 is made of aluminum alloy, which has good thermal conductivity, corrosion resistance and other characteristics. The outer wall of the cooling ring 71 is provided with a water outlet 711 and a storage pipe 712. A ball valve 72 is installed on the inner wall of the storage pipe 712. An extension rod 721 is provided on the outer wall of the ball valve 72. A socket cylinder is opened on the left end face of the storage pipe 712. The extension rod 721 is slidably inserted into the socket cylinder. After passing through the socket cylinder, the extension rod 721 is fixedly connected to the linkage rod 64. A return spring 73 is fixedly installed on the inner wall of the storage pipe 712. The right end of the return spring 73 abuts against the outer wall of the ball valve 72. A water inlet pipe 713 is provided on the outer wall of the storage pipe 712. Specifically, please refer to Figure 6 , Figure 9 , the maximum outer diameter of the ball valve 72 is adapted to the inner wall size of the storage pipe 712. The ball valve 72 is slidably connected in the storage pipe 712. An abutting ring is provided at the end of the inner wall of the storage pipe 712 close to the cooling ring 71. The inner diameter of the abutting ring is smaller than the maximum outer diameter of the ball valve 72. Under the action of the return spring 73, the outer wall of the ball valve 72 tightly abuts against the abutting ring. At this time, the ball valve 72 closes the storage pipe 712, and the water inlet pipe 713 cannot supply water to the inside of the cooling ring 71. When the piston rod 63 drives the linkage rod 64 to move, the linkage rod 64 drives the extension rods 721 of the two water-cooling components 7 to move synchronously. The extension rod 721 drives the ball valve 72 to move, so that the ball valve 72 is separated from the abutting ring, compressing the return spring 73. At this time, the storage pipe 712 is communicated with the cooling ring 71, and the water outlet 711 supplies water to the cooling ring 71. The cooling ring 71 cools the outer wall of the motor body. The water that has absorbed the heat is discharged through the water outlet 711. When the motor body is cooled, the temperature of the expansion oil inside the storage ring 61 drops, and the contraction of the expansion oil drives the piston rod 63 to move. The piston rod 63 drives the linkage rod 64 to move. The linkage rod 64 cancels the pulling force on the extension rod 721. The return spring 73 releases its elastic force, and the ball valve 72 abuts against the abutting ring again under the action of the return spring 73, and the storage pipe 712 stops supplying water to the inside of the cooling ring 71, achieving the purpose of saving water resources.

[0046] Working principle: During the use of this device, the motor housing 1 and the bearing body 3 are stably connected through the positioning pin 4. The end face of the bearing body 3 is equidistantly provided with socket holes, and the end face of the motor housing 1 is provided with corresponding fixed slots 12. The positioning pin 4 passes through the socket holes and is inserted into the fixed slots 12 to achieve preliminary fixation. A sliding hole is provided on the inner wall of the fixed slot 12 to accommodate the positioning pin 4. A blocking ring 41 is provided at the tail end of the positioning pin 4 to prevent the bearing body 3 from loosening. The limiting plate 5 provides a return force through the torsion spring, so that it automatically fits against the outer wall of the fixed slot 12. The positioning block 51 is engaged with the positioning port 42 to complete the locking of the positioning pin 4; when the bearing body 3 needs to be disassembled, the limiting plate 5 can be rotated by pulling the ring 52 to release the engagement between the positioning block 51 and the positioning port 42, and the positioning pin 4 can be taken out, so as to realize the rapid disassembly of the bearing body 3;

[0047] A temperature-sensitive component 6 and a water-cooling component 7 are fixed on the outer wall of the motor housing 1 for dynamically adjusting the motor temperature. The storage ring 61 is closely attached to the motor housing 1 and filled with expansion oil. When the motor temperature rises, the heat of the motor body is transferred to the expansion oil through the storage ring 61 made of aluminum alloy material, causing the expansion oil to expand and generate pressure. The expansion oil pushes the piston rod 63 to move within the hydraulic cylinder 62 and drives the linkage rod 64 to move;

[0048] The cooling ring 71 is attached to the outer wall of the motor housing 1. Its outer wall is provided with a storage pipe 712, and the water inlet is controlled by a ball valve 72. The ball valve 72 is connected to the linkage rod 64 through an extension rod 721. Under the action of the return spring 73, the ball valve 72 remains closed to prevent water from flowing into the cooling ring 71. When the motor temperature rises, the linkage rod 64 moves with the piston rod 63, driving the extension rod 721 to push the ball valve 72 open, allowing cooling water to enter the cooling ring 71, thereby cooling the outer wall of the motor. The cooled water is discharged from the water outlet 711 to complete the heat dissipation process; when the motor temperature drops, the expansion oil cools and contracts, driving the piston rod 63 to reset, and the linkage rod 64 retracts accordingly. The return spring 73 pushes the ball valve 72 to close again, stopping the water supply, achieving the effect of saving water resources; thus, the operation of this device is completed.

[0049] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A pin-structured motor stator, comprising a motor housing (1), characterized in that: A motor stator body (2) is coaxially fixedly mounted inside the motor housing (1), bearing bodies (3) are fixedly mounted at the front and rear ends of the motor housing (1), the bearing body (3) is fixedly mounted to the motor housing (1) via a plurality of positioning pins (4), a temperature sensing component (6) is fixedly mounted on the outer wall of the motor housing (1), and two groups of water cooling components (7) are symmetrically mounted on the outer wall of the motor housing (1) at the front and rear ends.

2. The pin-structured motor stator according to claim 1, characterized in that: The front and rear end surfaces of the motor housing (1) are both circumferentially and equidistantly provided with a plurality of fixed slots (12); the outer wall of the bearing body (3) is provided with a convex ring; the end surface of the convex ring is circumferentially and equidistantly provided with a plurality of plug holes; and a plurality of positioning pins (4) are respectively passed through the plurality of plug holes and fixedly installed in the fixed slots (12).

3. The pin-structured motor stator according to claim 2, characterized in that: The outer walls of the plurality of fixed slots (12) are all hingedly connected to a limit plate (5), and a torsion spring is installed between the limit plate (5) and the rotation axis of the outer wall of the fixed slot (12).

4. The pin-structured motor stator according to claim 3, characterized in that: A positioning block (51) is provided on the end surface of the limiting plate (5) close to the fixing slot (12), and the outer wall size of the positioning block (51) is matched with the inner wall size of the positioning opening (42).

5. The pin-structured motor stator according to claim 4, characterized in that: The temperature sensing component (6) comprises a storage ring (61), the inner ring wall of the storage ring (61) abuts against the outer wall of the motor housing (1), and a hydraulic cylinder (62) is fixedly mounted on the outer wall of the storage ring (61).

6. The pin-structured motor stator according to claim 5, characterized in that: The interior of the hydraulic cylinder (62) is communicated with the storage ring (61), a piston rod (63) is slidably connected to the interior of the hydraulic cylinder (62), and a linkage rod (64) is fixedly mounted on the end of the piston rod (63).

7. The pin-structured motor stator according to claim 1, characterized in that: The water cooling component (7) comprises a cooling ring (71), wherein the inner ring wall of the cooling ring (71) abuts against the outer wall of the motor housing (1).

8. The pin-structured motor stator according to claim 7, characterized in that: The outer wall of the cooling ring (71) is provided with a water outlet (711) and a storage pipe (712); the inner wall of the storage pipe (712) is provided with a ball valve (72); and the outer wall of the ball valve (72) is provided with an extension rod (721).

9. The pin-structured motor stator according to claim 8, characterized in that: The storage tube (712) has a plug-in tube on its left end surface, the extension rod (721) is slidably plugged into the plug-in tube, and the extension rod (721) is fixedly connected to the linkage rod (64) after passing through the plug-in tube.

10. The pin-structured motor stator according to claim 9, characterized in that: A return spring (73) is fixedly mounted on the inner wall of the storage tube (712); the right end of the return spring (73) abuts against the outer wall of the ball valve (72); and a water inlet pipe (713) is provided on the outer wall of the storage tube (712).

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