Electromagnetic driving device based on staggered sheet structure spiral stepping motor
The electromagnetic drive device of the staggered spiral stepper motor solves the problem of the size and weight of the electromagnetic drive device, and improves shooting accuracy and range through rotation, achieving lightweight and efficient firing.
Patent Information
- Application Number
- CN202511463301.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-14
- Publication Date
- 2026-01-30
AI Technical Summary
Existing electromagnetic drive devices are limited by energy storage technology, resulting in size and weight that are difficult to meet carrying requirements. Furthermore, the launched object does not have a rotation function or rotation increases air resistance, affecting the accuracy of long-range shooting.
An electromagnetic drive device based on a staggered spiral stepper motor is used, including a housing, a motor stator and a launching structure. The motor stator, composed of permanent magnets, a basic iron core and windings, combined with a mover ring and a mover fixing sleeve, achieves rotation and efficient launching through spiral motion.
It features a lightweight design, improved projection accuracy and distance, simplified assembly process, reduced energy consumption and manufacturing costs, and is suitable for rapid assembly and adjustment in emergency situations.
Smart Images
Figure CN121430385A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to an electromagnetic drive device based on a helical stepper motor, belonging to the technical field of portable electromagnetic transmitters. Background Technology
[0002] Electromagnetic drive devices convert electrical energy into mechanical energy to propel objects. Their applications are widespread; for example, they can be used for high-altitude firefighting, launching objects that carry fire extinguishing equipment to target fire sources. However, their design, manufacturing, and use face numerous unresolved challenges. For instance, limitations in energy storage technology restrict their size and weight for portability and vehicle-mounted applications. Furthermore, current electromagnetic launchers either lack rotational capabilities or rely on tail fins for rotation, which increases air resistance and reduces kinetic energy. Therefore, long-range firing accuracy remains a key challenge for engineering applications.
[0003] Therefore, there is an urgent need to propose an electromagnetic drive device based on a staggered spiral stepper motor to solve the above-mentioned technical problems. Summary of the Invention
[0004] To address the aforementioned problems, an electromagnetic drive device based on a staggered-plate helical stepper motor is provided. A brief overview of the invention is given below to provide a basic understanding of certain aspects of the invention. It should be understood that this overview is not an exhaustive summary of the invention. It is not intended to identify key or essential parts of the invention, nor is it intended to limit the scope of the invention.
[0005] The technical solution of the present invention: An electromagnetic drive device based on a staggered spiral stepper motor includes a housing, a motor stator, and a launching structure, arranged sequentially from the outside to the inside. It also includes a head structure, with the head structure located at one end of the launching structure. The housing and the motor stator together serve as a single-section pipe of the electromagnetic drive device.
[0006] Preferably, the motor stator includes a permanent magnet, a basic iron core, and windings. Several basic iron cores are arranged on both sides of the permanent magnet, the windings are connected to the basic iron cores, and the basic iron cores are coaxially connected to the outer shell.
[0007] Preferably, the basic iron core has salient poles arranged at equal intervals, the number of salient poles is 2n, wherein the symmetrical salient pole ends have auxiliary tooth structures, and the two auxiliary tooth structures are arranged in a circumferential array.
[0008] Preferably, the auxiliary tooth structure has three auxiliary teeth, which are equidistantly arranged, and the convex part of the auxiliary tooth structure is an asymmetrical structure.
[0009] Preferably, the auxiliary teeth are offset by 1 / 4 tooth pitch relative to the diameter DD, one side of the auxiliary teeth is set at one end of the circumferential direction of the convex pole, and the other side of the auxiliary teeth is at a distance from the other end of the convex pole, and EE is the diameter line passing through the center of the middle auxiliary teeth.
[0010] Preferably, a basic iron core has six salient poles, arranged in three symmetrical groups, one of which has an auxiliary tooth structure, and the three basic iron cores stacked at 60° form an iron core unit.
[0011] Preferably, three sets of iron core units are provided on both sides of the permanent magnet. The number of permanent magnets and windings is the same as the number of salient poles of a basic iron core. The permanent magnets are arranged in correspondence with the adjacent salient poles, and a set of windings is wound on the axial salient poles.
[0012] Preferably, it also includes a slot wedge, with a slot wedge provided between adjacent salient poles.
[0013] Preferably, the launching structure includes several moving rings and a moving ring fixing sleeve. The moving ring fixing sleeve is a straight tube of equal diameter, and several moving rings are fitted on the outside of the moving ring fixing sleeve. Adjacent moving rings are connected.
[0014] Preferably, the moving ring includes a first moving ring, a second moving ring, and a third moving ring. The head structure is connected to one end of the moving ring fixing sleeve. The third moving ring and the second moving ring are fitted onto the outside of the moving ring fixing sleeve. The first moving ring is fitted onto the outside of the third moving ring and the second moving ring. The second moving ring has a tooth structure evenly arranged in the circumference. The third moving ring has a tooth groove structure corresponding to the tooth structure on one side. The tooth structure is embedded in the tooth groove structure.
[0015] The present invention has the following beneficial effects: 1. This invention creatively improves upon the staggered structure hybrid spiral stepper motor and applies it to a portable electromagnetic transmitter; the spiral motor enables the launching structure to rotate, and the launching structure can carry objects such as fire extinguishing devices. The rotation improves the projection accuracy and distance, thereby increasing the fire extinguishing efficiency. 2. The present invention has a simple structure and light weight, meeting the requirements for carrying and transportation; 3. This invention facilitates the adjustment of magnetic layer parameters by changing the structure of the spiral motor, thereby making it easy to adjust the aperture, outlet ejection speed, and outlet rotation speed of the electromagnetic drive device. Attached Figure Description
[0016] Figure 1 This is a three-dimensional diagram of an electromagnetic drive device based on a staggered spiral stepper motor; Figure 2 This is a front view of an electromagnetic drive device based on a staggered spiral stepper motor; Figure 3 yes Figure 2Sectional view of AA; Figure 4 This is a side view of an electromagnetic drive device based on a staggered spiral stepper motor; Figure 5 This is a partial view of an electromagnetic drive device based on a staggered spiral stepper motor; Figure 6 yes Figure 5 BB section view; Figure 7 It is a 3D view of the motor stator; Figure 8 This is an exploded view of the motor stator; Figure 9 This is a schematic diagram of the basic iron core structure; Figure 10 This is a schematic diagram of the iron core unit structure; Figure 11 This is a cross-sectional view of the launching structure; Figure 12 yes Figure 11 Enlarged view of point C in the middle.
[0017] In the diagram: 1-outer shell, 2-motor stator, 3-launching structure, 4-head structure, 21-permanent magnet, 22-basic iron core, three constituent iron core units, 23-winding, 24-slot wedge, 31-first mover ring, 32-second mover ring, 33-third mover ring, 34-motor fixing sleeve, 221-convex stage, 223-tooth groove, 222-stepped edge, 311-tooth groove structure, 321-tooth structure. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.
[0019] Specific implementation method one: Combining Figure 1-12This embodiment describes an electromagnetic drive device based on a staggered spiral stepper motor. It includes a housing 1, a motor stator 2, and a launching structure 3. The housing 1, motor stator 2, and launching structure 3 are coaxially arranged from the outside to the inside to form a staggered hybrid spiral stepper motor. It also includes a head structure 4, with one end of the launching structure 3 having a head structure 4. The head structure 4 has a parabolic cross-section along its axis, with the tip located on the outside. The head structure 4 can be used to carry objects, such as fire extinguishers. The housing 1 and motor stator 2 together form a single-section pipe of the electromagnetic drive device. Several single-section pipes are sequentially fixedly connected to form a launching pipe. The actual axial length of the pipe is much longer than the axial length of the launching structure. The length can be achieved by stacking multiple sections axially. The longer the stack, the greater the acceleration distance. It can be achieved with simple stacking and combination, making assembly extremely simple. It is suitable for assembly and adjustment in emergency situations. For example, adjacent shells 1 can be welded together and can be carried separately. After being transported to the site, they can be installed and adjusted according to the actual range, reducing the transportation space. There is a gap between adjacent motor stators 2, which provides installation space for the windings and facilitates installation, maintenance and repair operations. This invention proposes an electromagnetic drive device structure based on an improved staggered structure hybrid spiral stepper motor, which can effectively reduce the volume and weight to meet the carrying requirements. For example, the fire extinguishing device can be carried in the launching structure 3, and the projection accuracy can be improved by rotation. The outer shell 1 is a cylindrical structure, which not only reduces weight but also facilitates the insertion and installation of the head structure 4. The lightweight design not only improves response speed, reduces energy consumption, and lowers manufacturing costs, but also facilitates loading and transportation. A motor stator 2 is fixedly installed in the middle of the inner cavity of the outer shell 1. The axial length of the motor stator 2 can be less than the axial length of the outer shell 1. The motor stator 2 includes a permanent magnet 21, a basic iron core 22, and a winding 23. Several basic iron cores 22 are stacked axially into two parts, namely section I and section II. The two sections of iron core are symmetrically arranged on both sides of the permanent magnet 21. The winding 23 is connected to the basic iron core 22, and the basic iron core 22 is coaxially fixedly connected to the outer shell 1. The electromagnetic drive device of the present invention uses a multi-stage spiral motor stator connected in series axially. The spiral motor causes the launching structure to rotate. The launching structure or head structure is installed in front of the moving part of the spiral motor to reduce air resistance and improve the striking accuracy. The basic iron core 22 has salient poles 221 arranged at equal intervals. The number of salient poles 221 is 2n, n=1, 2, 3, ..., and one set of symmetrical salient poles 221 has auxiliary tooth structures 223 on the end pole shoes. Two auxiliary tooth structures 223 in one set are arranged in a circular array within a 360° range. The auxiliary tooth structure 223 has three auxiliary teeth, which are equidistantly arranged in the circumferential direction. The convex pole 221 with the auxiliary tooth structure 223 has an asymmetrical structure, which avoids the large pole body (convex pole) needing to be offset by half a tooth pitch to ensure that the small tooth (auxiliary tooth) is offset by half a tooth pitch. This prevents the assembly process from becoming complicated and difficult to guarantee positioning accuracy. It not only reduces the installation and measurement operation time, but also eliminates the need for complex measuring equipment, saving costs. Most importantly, it greatly simplifies the assembly process and improves work efficiency while ensuring safe production. The auxiliary teeth are offset by 1 / 4 tooth pitch relative to the diameter DD (the diameter line passing through the salient pole with the auxiliary teeth). The auxiliary teeth on one side are set at one end of the circumference of the salient pole 221, and the auxiliary teeth on the other side are at a distance from the other end of the salient pole 221. EE is the diameter line passing through the center of the middle auxiliary teeth. A basic iron core 22 has six salient poles 221, arranged in three symmetrical groups. One of the groups has an auxiliary tooth structure 223. Three (n) basic iron cores 22, coaxially and sequentially stacked in a clockwise or counterclockwise 60° (360° / 2n) circumferential direction, form an iron core unit, enabling it to... Figure 9 On the plane shown, the auxiliary tooth structures 223 are arranged circumferentially at equal intervals, as follows: Figure 10 ; DD is the center line of a pair of large poles in the vertical direction, and EE is the center line of the small tooth in the middle. Make EE and DD staggered by 1 / 4 tooth pitch. The basic iron core of section I is stacked in sequence staggered by 60°. The basic iron core of section II will be flipped 180° left and right along DD and then stacked in staggered order, so that the small teeth are staggered by half a tooth pitch. Three sets of iron core units are respectively arranged on both sides of the permanent magnet 21, with a total of six sets of iron core units. The figure of this invention is of moderate scale and only shows a section of the stator structure. In fact, the stator can be stacked in multiple sections along the axial direction according to the design requirements of the electromagnetic drive device. The number of permanent magnets 21 and windings 23 is the same as the number of salient poles 221 of a basic iron core 22. The permanent magnets 21 are arranged corresponding to the adjacent salient poles 221 on both sides, and a set of windings 23 is wound on the salient poles 221 of the axial linear array. By changing the thickness of the permanent magnet 21, the distance between the iron core units on both sides can meet the requirements. By adjusting the asymmetrical structure of the auxiliary tooth structure 223 and the thickness of the permanent magnet 21, the tooth width and tooth pitch ratio in the axial and circumferential directions not only simplifies the structure and processing flow, but also facilitates the realization of helical motion and improves material utilization. The diameter, outlet injection speed, and outlet rotation speed of the electromagnetic drive device can all be adjusted by changing the magnetic layer parameters of the helical motor. It also includes a slot wedge 24. A slot wedge 24 is provided between adjacent axial linear array convex poles 221. Both ends of the pole shoe at the end of the convex pole 221 are provided with a broken edge 222. The straight edge 222 of adjacent convex poles 221 forms a convex gap shape and is installed corresponding to the slot wedge 24. The wedge effect is used to make the lubricant adhere better to the friction surface, thereby improving the lubrication performance. The axial length of the launching structure 3 is greater than the axial length of the outer shell 1; the launching structure 3 includes several moving rings 30 and moving fixing sleeves 34. The moving fixing sleeves 34 are straight tubes of equal diameter. Several moving rings 30 are fitted on the outside of the moving fixing sleeves 34, and adjacent moving rings 30 are tightly connected. The mover ring 30 includes a first mover ring 31, a second mover ring 32, and a third mover ring 33. The head structure 4 is inserted into the mover fixing sleeve 34, which is a hollow tube used to further reduce weight, improve acceleration, and improve energy utilization. Figure 12 The third moving ring 33 and the second moving ring 32, arranged on the left and right sides, are fitted and fixed to the outside of the moving ring fixing sleeve 34. One end of the third moving ring 33 is fitted and connected to the other end of the second moving ring 32. A first moving ring 31 is fitted and fixed to the outside of the third moving ring 33 and the second moving ring 32. The second moving ring 32 has a tooth structure 321 evenly arranged in the circumferential direction. One side of the third moving ring 33 is machined with a tooth groove structure 311 corresponding to the tooth structure 321. The tooth structure 321 is embedded in the tooth groove structure 311. The tooth tip of the tooth groove structure 311 is on the same annular surface as the outside of the first moving ring 31. The axial length of the first moving ring 31 is equal to the sum of the axial lengths of the third moving ring 33 and the second moving ring 32, so that the edges of the moving ring 30 are on the same plane. The radial thickness of the third moving ring 33 is less than the radial thickness of the second moving ring 32. The first moving ring 31 has a gap between the end of the salient pole 221 and the first moving ring 31. The first moving ring 31 is made of copper or steel or other antimagnetic materials, which have a lubricating effect. This invention creatively utilizes the principle of a spiral stepper motor to carry out an original design of an electromagnetic drive device based on a staggered spiral stepper motor. It not only takes advantage of the simple structure and rotation of the staggered spiral stepper motor, but also improves the lubrication effect, which is more conducive to increasing the range and reducing energy loss. The second moving ring 32 and the third moving ring 33 can be made of soft magnetic composite materials with high magnetic permeability and good mechanical properties, such as iron-nickel alloy, silicon steel sheets, etc. By adjusting the interaction between the structure and materials, a magnetic circuit is formed, the magnetic field distribution is optimized, and the magnetic flux is guided and concentrated. On the basis of realizing spiral motion, the surface flatness is increased and the lubrication effect is improved.
[0020] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be permuted and combined. Those skilled in the art can exhaust all possibilities based on the mathematical knowledge of permutation and combination. Therefore, the present invention will not describe the technical solutions after permutation and combination one by one, but it should be understood that the technical solutions after permutation and combination have been disclosed by the present invention.
[0021] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. An electromagnetic driving device based on a miss piece structure helical step motor, comprising a shell (1), a motor stator (2) and a launching structure (3), the shell (1), the motor stator (2) and the launching structure (3) are sequentially arranged from outside to inside, characterized in that: Head structure (4) is further included, one end of the emission structure (3) is provided with head structure (4), the shell (1), motor stator (2) are jointly used as the emission pipeline of electromagnetic drive device.
2. The electromagnetic driving device based on the miss piece structure spiral stepping motor according to claim 1, characterized in that: The motor stator (2) includes a permanent magnet (21), a basic core (22) and a winding (23), a plurality of basic cores (22) are arranged on both sides of the permanent magnet (21), the winding (23) is connected with the basic core (22), and the basic core (22) is coaxially connected with the shell (1).
3. The electromagnetic driving device based on the miss piece structure spiral stepping motor according to claim 2, characterized in that: The basic core (22) has equidistantly arranged salient poles (221), the number of the salient poles (221) is 2n, and the symmetrical salient poles (221) have auxiliary tooth structures (223) at ends.
4. The electromagnetic driving device based on the miss piece structure spiral stepping motor according to claim 3, characterized in that: The auxiliary tooth structure (223) has three auxiliary teeth, the three auxiliary teeth are equidistantly arranged, and the salient pole (221) with the auxiliary tooth structure (223) is an asymmetric structure.
5. The electromagnetic driving device based on the miss piece structure spiral stepping motor according to claim 4, characterized in that: The auxiliary tooth is staggered by 1 / 4 tooth pitch relative to the diameter DD, one side edge auxiliary tooth is arranged at one end in the circumferential direction of the salient pole (221), and the other side edge auxiliary tooth is away from the other end of the salient pole (221), and EE is a diameter line passing through the center of the middle auxiliary tooth.
6. The electromagnetic driving device based on the miss piece structure spiral stepping motor according to claim 3, characterized in that: The number of the salient poles (221) of one basic core (22) is six, and there are three symmetrical groups, one group of the three groups has the auxiliary tooth structure (223), and the three basic cores (22) that are staggered by 60° form a core unit.
7. The electromagnetic driving device based on the miss piece structure of the helical stepping motor according to claim 2 or 6, characterized in that: Three groups of core units are arranged on both sides of the permanent magnet (21), the number of the permanent magnet (21) and the winding (23) is the same as the number of the salient poles (221) of one basic core (22), the permanent magnet (21) is correspondingly arranged with the adjacent salient pole (221), and a group of windings (23) is correspondingly wound on the axial salient pole (221).
8. The electromagnetic driving device based on the miss piece structure spiral stepping motor according to claim 7, characterized in that: The slot wedge (24) is further included, and the slot wedge (24) is arranged between the adjacent salient poles (221).
9. The electromagnetic drive device based on a hybrid stepping motor according to any one of claims 1 to 3, characterized in that: The emission structure (3) includes a plurality of mover rings (30) and a mover fixing sleeve (34), the mover fixing sleeve (34) is a straight pipe with equal diameters, the mover fixing sleeve (34) externally sleeves a plurality of mover rings (30), and adjacent mover rings (30) are connected.
10. The electromagnetic drive device based on a hybrid stepping motor according to claim 9, characterized in that: The mover ring (30) includes a first mover ring (31), a second mover ring (32) and a third mover ring (33), the head structure (4) is connected with one end of the mover fixing sleeve (34), the third mover ring (33) and the second mover ring (32) are sleeved outside the mover fixing sleeve (34), the first mover ring (31) is sleeved outside the third mover ring (33) and the second mover ring (32), the second mover ring (32) has circumferentially uniformly arranged tooth structures (321), one side of the third mover ring (33) is processed with tooth groove structures (311) corresponding to the tooth structures (321), and the tooth structures (321) are embedded into the tooth groove structures (311).