Positioning locking and releasing device based on electromagnetic control
By designing a positioning locking and release device based on electromagnetic control on the satellite, the position holding and efficiency of the satellite folding and deployment device under power is solved, and efficient and low-cost locking and release functions are achieved to ensure that The stability and reliability of the satellite folding and deployment mechanism are provided.
Patent Information
- Application Number
- CN202411277795.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2024-12-17
AI Technical Summary
The existing satellite folding and deploying devices are difficult to maintain their position under the action of power, and the expansion and folding action efficiency and reliability are low, and the cost is high, which limits the promotion of large-scale satellite products.
Design a positioning locking and release device based on electromagnetic control, including the main bracket, upper cover plate, lower cover plate, sliding electromagnetic module and fixed electromagnetic module, locking and release through electromagnetic suction and moving mechanism, combined with rubber limit positioning Rings and steel balls, return springs and cushioning springs ensure accurate positioning and cushioning of the bracket.
The guidance, positioning, locking and release of the deployment and folding bracket is achieved, reducing costs, improving efficiency and reliability, and ensuring the stability and space efficiency of the folding and spreading mechanism.
Smart Images
Figure CN119142549A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of satellite technology, and more specifically relates to a positioning locking and releasing device based on electromagnetic control. Background Art
[0002] For the folding and unfolding devices of ordinary civilian satellites, whether they are manually operated or electronically controlled, they need to be locked after the folding action is completed to ensure that they will not be displaced under the action of external forces. However, for mechanisms such as solar folding panels on satellites, the requirements for their unfolding and folding devices are extremely demanding. First, it is necessary to ensure that the folding device can maintain its position under the action of acceleration during the launch process; second, after the launch, it is necessary to ensure that the folding device has an initial thrust to ensure that the folding and unfolding device can smoothly start the unfolding action; finally, when the folding and unfolding mechanism needs to be folded, it is necessary to ensure that at the end of the folding action, the auxiliary mechanism can complete the folding, guiding, and finally positioning and locking actions. It can be seen from this that for high-value and high-tech equipment such as space satellites that have folding and unfolding mechanisms, effective control of their folding and unfolding devices is extremely important. However, the current existing methods mainly use roller pull rope type electric control methods to realize the unfolding and folding locking actions of the folding mechanism, which are both low in efficiency and reliability, and high in cost, and are not conducive to the promotion of large-scale satellite products such as Starlink.
[0003] Therefore, how to provide a positioning locking and releasing device based on electromagnetic control is a problem that those skilled in the art need to solve urgently. Summary of the invention
[0004] In view of this, the present invention provides a positioning locking and releasing device based on electromagnetic control, which adopts the following technical solution:
[0005] A positioning locking and releasing device based on electromagnetic control is fixed on the satellite and connected to the locking rod on the unfolding and folding bracket, and is used for folding locking and releasing of the unfolding and folding bracket; the positioning locking and releasing device comprises a main bracket, an upper cover plate, a lower cover plate, a sliding electromagnetic module and a fixed electromagnetic module; the main bracket is fixedly connected to the satellite; the center of the main bracket is through-set; the sliding electromagnetic module and the fixed electromagnetic module are sequentially arranged inside the main bracket from top to bottom; the upper cover plate and the lower cover plate are respectively embedded in the main bracket from top and bottom, and are fixedly connected to the main bracket; the center of the upper cover plate is through-set, and the locking rod passes through the upper cover plate and is fixedly connected to the upper cover plate; the sliding electromagnetic module and the fixed electromagnetic module are both electrically connected to the internal power supply of the satellite; the sliding electromagnetic module is sleeved on the lower part of the upper cover plate, and can move up and down along the lower part of the upper cover plate, and is used to lock and release the locking rod.
[0006] Furthermore, the upper end of the locking rod is fixedly connected to the support plate of the unfolding and folding bracket, a limiting ring is arranged in the middle position, and a positioning ring groove is arranged on the lower periphery for docking and fixing with the positioning locking and releasing device; the inner surface of the positioning ring groove is an arc surface; and a guide cone surface is arranged at an angle at the lower end of the locking rod.
[0007] Furthermore, a first annular groove is provided on the lower side wall of the upper cover plate, and a rubber limiting ring and a plurality of steel balls are provided inside the first annular groove; limiting holes having the same number as the steel balls are provided on the inner side wall of the first annular groove for limiting the steel balls; the rubber limiting ring is embedded in the first annular groove and sleeved on the outside of the steel balls; the protruding part of the steel ball into the inner cavity of the upper cover plate is used to engage with the inner surface of the positioning ring groove.
[0008] Furthermore, a accommodating cavity opening toward one side of the interior of the main bracket is provided above the lower cover plate; a fixing pile is provided at the bottom of the accommodating cavity, and a buffer column is fixed above the fixing pile; a reset spring is sleeved on the fixing pile, and the upper end of the reset spring is connected to the sliding electromagnetic module; a buffer spring is sleeved on the buffer column, and the upper end of the buffer spring passes through the sliding electromagnetic module and abuts against the locking rod.
[0009] Furthermore, the fixed electromagnetic module includes a fixed coil and a fixed coil seat; the fixed coil seat is hollow inside, and the inner diameter is larger than the outer diameter of the fixed pile; the lower part of the fixed coil seat is embedded in the accommodating cavity; a second annular groove is provided on the lower side wall of the fixed coil seat, and the fixed coil is embedded in the second annular groove and is sleeved on the fixed coil seat.
[0010] Furthermore, the lower diameter of the main bracket is larger than the upper diameter, and a step is provided in the middle; there is a certain gap between the upper end surface of the lower cover plate and the middle step of the main bracket; a boss is provided on the upper part of the fixed coil seat, which is fixed between the lower cover plate and the main bracket.
[0011] Furthermore, an annular recess is provided above the inner wall of the fixed coil seat for embedding the sliding electromagnetic module; the sliding electromagnetic module includes a sliding coil and a sliding coil seat; the upper portion of the sliding coil seat is sleeved on the lower portion of the upper cover plate, and the lower portion can be embedded in the annular recess; the sliding coil is embedded in the side wall of the sliding coil seat; the inner side wall of the main bracket and the side wall of the annular recess form a moving cavity of the sliding coil seat, and the lower portion of the upper cover plate serves as a guide column of the sliding coil seat; the sliding coil seat slides inside the moving cavity.
[0012] Furthermore, the sliding coil seat is hollow inside, the inner diameter of the sliding coil seat is smaller than the diameter of the reset spring, and the reset spring abuts against the lower end surface of the sliding coil seat; the buffer spring passes through the sliding coil seat and abuts against the locking rod to buffer the movement of the locking rod.
[0013] The beneficial effects of the present invention are:
[0014] (1) A new direct-insert electromagnetic locking, positioning and releasing device is designed. The device can guide, position, lock and release the unfolding and folding bracket, and can position the folding structure during the folding process, and then buffer and lock the unfolding and folding bracket by combining the electromagnetic and motion mechanisms;
[0015] (2) When the unfolding and folding bracket needs to be released and unfolded, a certain initial kinetic energy can be provided to the mechanism, thereby ensuring that the unfolding and folding bracket can escape from the dead angle of the position and unfold smoothly;
[0016] (3) The direct-insert electromagnetic locking, positioning and releasing device has the following remarkable features: simple structure, low cost, convenient operation, small space occupation and high stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0018] Figure 1 This is an assembly diagram of the deployment device for a certain model of satellite.
[0019] Figure 2 Schematic diagram of the structure of the locking rod.
[0020] Figure 3 It is an expanded view of the overall structure of the present invention.
[0021] Figure 4 for Figure 3 Enlarged view of point A in the middle.
[0022] Figure 5 It is a cross-sectional view of the locking rod and the electromagnetic positioning locking and releasing device when not docked.
[0023] Figure 6 for Figure 5 Enlarged view of point B in the middle.
[0024] Figure 7It is a cross-sectional view of the locking rod and the electromagnetic positioning locking and releasing device when just docked.
[0025] Figure 8 for Figure 7 Enlarged view of center C.
[0026] Fig. 9 A cross-sectional view of the locking rod and the electromagnetic positioning locking and releasing device after docking and locking.
[0027] Fig.10 for Fig. 9 Enlarged view of point D in the middle.
[0028] Among them, in the figure:
[0029] 1-satellite; 11-driving joint; 12-folding rod; 13-support plate; 14-locking rod; 141-limiting ring; 142-positioning ring groove; 143-guide cone; 2-positioning locking and releasing device; 3-deep space probe; 21-main bracket; 22-upper cover; 221-rubber limiting ring; 222-steel ball; 223-limiting hole; 23-lower cover; 231-accommodating cavity; 232-fixing pile; 233-buffer column; 234 reset spring; 235-buffer spring; 24-fixed coil; 25-fixed coil seat; 26-sliding coil; 27-sliding coil seat. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of 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.
[0031] Figure 1 The figure is an assembly diagram of a certain type of satellite deployment device. The assembly is set on a satellite 1, and includes two positioning locking and releasing devices 2 provided by the present invention, an unfolding and folding bracket, and a deep space probe 3; the unfolding and folding bracket is used to support and fix the deep space probe 3, and includes a driving joint 11, a folding rod 12, and a support plate 13. The connection relationship between the driving joint 11 and the folding rod 12 is the existing technology; the support plate 13 is set at the end of the folding rod 12, and is used to fix the deep space probe 3. Two locking rods 14 are installed downward at the bottom of the support plate 13. Please refer to the attached Figure 2-10The positioning locking and releasing device 2 of the present invention is installed on the satellite 1 and is arranged on both sides of the unfolding and folding bracket; the locking rod 14 corresponds to the position of the positioning locking and releasing device 2, and the two can be docked to realize the folding of the unfolding and folding bracket. In the unfolded state, the locking rod 14 and the electromagnetic locking and releasing device 2 are in a separated state, and in the fully folded state, the locking rod 14 docks into the positioning locking and releasing device 2 and locks together, thereby ensuring the position accuracy of the folding and unfolding mechanism and preventing it from being displaced under the action of external loads.
[0032] The upper end of the locking rod 14 is fixed to the bottom of the support plate 13 of the unfolding and folding bracket by bolts, a limiting ring 141 is arranged in the middle position, and a positioning ring groove 142 is arranged on the outer periphery of the lower part docking with the positioning locking and releasing device 2 for docking and fixing with the positioning locking and releasing device 2; the inner surface of the positioning ring groove 142 is an arc surface; the lower end of the locking rod 14 is obliquely arranged with a guide cone surface 143, so that the lower end forms a truncated cone shape.
[0033] The positioning, locking and releasing device 2 of the present invention comprises a main bracket 21, an upper cover plate 22, a lower cover plate 23, a sliding electromagnetic module and a fixed electromagnetic module; a boss is arranged at the lower end of the main bracket 21, and through holes are arranged around it, and the main bracket 21 is fixed to the satellite 1 by bolts passing through the through holes; the center of the main bracket 21 is through-arranged; the sliding electromagnetic module and the fixed electromagnetic module are arranged in sequence inside the main bracket 21 from top to bottom.
[0034] The lower diameter of the main support 21 is larger than the upper diameter, and a step is provided in the middle.
[0035] The lower cover plate 23 is embedded in the main bracket 21 from the bottom of the main bracket 21 and is fixedly connected to the main bracket 21 by bolts; the upper part of the lower cover plate 23 is embedded in the inner cavity of the main bracket 21, and its outer diameter is equal to the inner diameter of the lower part of the main bracket 21; there is a certain gap between the upper end surface of the lower cover plate 23 and the middle step of the main bracket 21; a accommodating cavity 231 opening toward one side of the inside of the main bracket 21 is provided above the lower cover plate 23; a fixing pile 232 is provided at the bottom of the accommodating cavity 231, and a buffer column 233 is fixed above the fixing pile 232; a reset spring 234 is sleeved on the fixing pile 232, and the upper end of the reset spring 234 is connected to the sliding electromagnetic module; a buffer spring 235 is sleeved on the buffer column 233, and the upper end of the buffer spring 235 passes through the sliding electromagnetic module and abuts against the locking rod 14.
[0036] The upper cover plate 22 is embedded in the main support 21 from above the main support 21 and is fixedly connected to the main support 21 by bolts; the lower part of the upper cover plate 22 extends into the interior of the main support 21, and its outer diameter is smaller than the inner diameter of the upper part of the main support 21; the lower end of the upper cover plate 22 is embedded in the sliding electromagnetic module. The center of the upper cover plate 22 is through, and the locking rod 14 can pass through the upper cover plate 22 and be fixedly connected to the upper cover plate 22. A first annular groove is provided on the lower side wall of the upper cover plate 22, and a rubber limiting ring 221 and a plurality of steel balls 222 are provided inside the first annular groove; limiting holes 223 having the same number as the steel balls 222 are provided on the inner side wall of the first annular groove, and the diameter of the limiting holes 223 is smaller than the diameter of the steel balls 222, so as to limit the steel balls 222; the steel balls 222 can be partially embedded in the limiting holes 223; the rubber limiting ring 221 is embedded in the first annular groove and is sleeved on the outside of the steel balls 222. When the locking rod 14 extends into the interior of the upper cover plate 22, the protruding portion of the steel ball 222 toward the inner cavity of the upper cover plate 22 can be engaged with the inner surface of the positioning ring groove 142. At this time, when the sliding electromagnetic module is arranged on the outer side of the lower part of the upper cover plate 22, its inner surface can limit the rubber limiting ring 221 from protruding outward. The rubber limiting ring 221 can tighten a number of the steel balls 222 inward to make them stuck in the positioning ring groove 142, thereby limiting and fixing the locking rod 14 and the upper cover plate 22.
[0037] The fixed electromagnetic module includes a fixed coil 24 and a fixed coil seat 25; the fixed coil seat 25 is hollow inside, and its inner diameter is larger than the outer diameter of the fixed pile 232; the lower part of the fixed coil seat 25 is embedded in the accommodating cavity 231, and the outer diameter of the fixed coil seat 25 is the same as the inner diameter of the accommodating cavity; a boss is provided on the upper part of the fixed coil seat 25, which is fixed between the lower cover plate 23 and the main bracket 21; a second annular groove is provided on the lower side wall of the fixed coil seat 25, and the fixed coil 24 is embedded in the second annular groove and is sleeved on the fixed coil seat 25.
[0038] An annular concave platform is arranged above the inner wall of the fixed coil seat 25, which is used to embed the sliding electromagnetic module; the sliding electromagnetic module includes a sliding coil 26 and a sliding coil seat 27; the outer diameter of the sliding coil seat 27 is the same as the inner diameter of the annular concave platform, and can be embedded in the fixed coil seat 25, and the lower end face abuts against the annular concave platform; the outer diameter of the sliding coil seat 27 is the same as the inner diameter of the main bracket 21, and its inner diameter is equal to the outer diameter of the lower part of the upper cover plate 22; the sliding coil seat 27 is sleeved on the lower part of the upper cover plate 22. The sliding coil 26 is embedded in the side wall of the sliding coil seat 27. The sliding coil seat 27 can drive the sliding coil 26 to slide inside the main bracket 21 and the annular concave platform, and the upper part can be sleeved on the lower part of the upper cover plate 22. The inner side wall of the main bracket 21 and the side wall of the annular concave platform form a moving cavity of the sliding coil seat 27, and the lower part of the upper cover plate 22 serves as a guide column of the sliding coil seat 27. The sliding coil seat 27 slides inside the moving cavity.
[0039] The sliding coil seat 27 is hollow inside, and the inner diameter of the sliding coil seat 27 is smaller than the diameter of the reset spring 234, so that the reset spring 234 can abut against the lower end surface of the sliding coil seat 27; the buffer spring 235 penetrates the sliding coil seat 27 and abuts against the locking rod 14, and the guide cone 143 provided at the lower end of the locking rod 14 can guide the lower end of the locking rod 14 to extend into the buffer spring 235, and the buffer spring 235 abuts against the guide cone 143. The buffer spring 235 can buffer the movement of the locking rod 14 to avoid hard contact impact damage between the folding mechanism and the electromagnetic positioning locking and releasing device.
[0040] The fixed coil 24 and the sliding coil 26 are both electrically connected to the internal power supply of the satellite 1 , and the relative movement between the sliding electromagnetic module and the fixed electromagnetic module is driven by controlling the power supply of the fixed coil 24 and the sliding coil 26 .
[0041] The working principle and workflow of the present invention are as follows: (illustrated in three steps: start folding → locking → releasing)
[0042] (1) Folding process: Taking a certain model of satellite as an example, in the initial state of the positioning locking and releasing device 2, the upper end surface of the sliding electromagnetic module is located above the first annular groove, the reset spring 234 is slightly relaxed, and the buffer spring 235 is in a relaxed state. When it is unfolded and the folding bracket is folded, the folding rod 12 begins to fold under the action of the driving joint 11, and the locking rod 14 gradually approaches the positioning locking and releasing device 2 of the present invention. At the same time, the fixed coil 24 and the sliding coil 26 in the sliding electromagnetic module and the fixed electromagnetic module are controlled to be energized, so that an electromagnetic attraction is generated between the two, thereby driving the sliding electromagnetic module to move axially toward the fixed electromagnetic module, exposing the first annular groove of the upper cover plate 22, and finally controlling the sliding electromagnetic module and the fixed electromagnetic module to fit together, and the sliding electromagnetic module is embedded in the annular concave platform of the fixed coil seat 25, while compressing the reset spring 234.
[0043] (2) Locking process: The locking rod 14 extends into the upper cover plate 22, and the guide cone surface 143 below the locking rod 14 presses against the steel ball 222, causing it to move radially and finally abut against the buffer spring 235, thereby compressing the buffer spring 235. When the positioning ring groove 142 of the locking rod 14 is engaged with the steel ball 222, and the limiting ring 141 abuts against the upper end surface of the upper cover plate 22, the sliding electromagnetic module and the fixed electromagnetic module are powered off, so that the sliding electromagnetic module moves axially away from the fixed electromagnetic module under the action of the reset spring 234 until the upper end surface abuts against the upper cover plate 22. At this time, the rubber limiting ring 221 is completely fitted with the inner wall of the sliding electromagnetic module, and the inner wall squeezes the rubber limiting ring 221 so that it no longer has flexible deformation space, so that the rubber limiting ring 221, the steel ball 222 and the locking rod 14 are all tightly fitted, thereby realizing the positioning and locking of the locking rod 14.
[0044] (3) Release process: When the unfolding and folding bracket needs to be released, the sliding electromagnetic module and the fixed electromagnetic module are energized, and the two are controlled to generate electromagnetic attraction, so that the sliding electromagnetic module moves axially toward the fixed electromagnetic module, thereby causing the sliding electromagnetic module to break contact with the rubber limit ring 221. At this time, the locking rod 14 can overcome the resistance of the steel ball 222 and the rubber limit ring 221 under the drive of the buffer spring 235 and the folding rod 12 under the action of the driving joint, and begin to disengage from the positioning locking and release device 2. When completely disengaged, the sliding electromagnetic module and the fixed electromagnetic module are powered off, and the sliding electromagnetic module returns to the position in contact with the upper cover plate 22 under the action of the reset spring 234. This realizes the locking and releasing process.
[0045] The present invention provides a new direct-insert electromagnetic locking, positioning and releasing device. The device can guide, position, lock and release the unfolding and folding bracket, and can realize the positioning of the folding structure during the folding process, and then buffer and lock the unfolding and folding bracket by combining the electromagnetic and motion mechanisms. Finally, when it is necessary to release the unfolding and folding bracket, the elastic potential energy of the buffer spring 235 can be converted into the initial kinetic energy of the mechanism, thereby ensuring that the unfolding and folding bracket can be out of the dead angle and unfolded smoothly. The direct-insert electromagnetic locking, positioning and releasing device 2 has the remarkable characteristics of simple structure, low cost, convenient operation, small space occupation and high stability.
[0046] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.
[0047] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A positioning locking and releasing device based on electromagnetic control, characterized in that: It is fixed on the satellite (1) and connected to the locking rod (14) on the unfolding and folding bracket, and is used for folding, locking and releasing the unfolding and folding bracket; The positioning locking and releasing device (2) comprises a main bracket (21), an upper cover plate (22), a lower cover plate (23), a sliding electromagnetic module and a fixed electromagnetic module; the main bracket (21) is fixedly connected to the satellite (1); the main bracket (21) is centrally connected; the sliding electromagnetic module and the fixed electromagnetic module are sequentially arranged inside the main bracket (21) from top to bottom; the upper cover plate (22) and the lower cover plate (23) are respectively embedded in the main bracket (21) from top and bottom, and are fixedly connected to the main bracket (21); the upper cover plate (22) is centrally connected, and the locking rod (14) passes through the upper cover plate (22) and is fixedly connected to the upper cover plate (22); The sliding electromagnetic module and the fixed electromagnetic module are both electrically connected to the internal power supply of the satellite (1); the sliding electromagnetic module is sleeved on the lower part of the upper cover plate (22) and can move up and down along the lower part of the upper cover plate (22) to lock and release the locking rod (14).
2. A positioning locking and releasing device based on electromagnetic control according to claim 1, characterized in that: The upper end of the locking rod (14) is fixedly connected to the support plate (13) of the unfolding and folding bracket, a limiting ring (141) is arranged in the middle, and a positioning ring groove (142) is arranged on the outer periphery of the lower part for docking and fixing with the positioning locking and releasing device (2); the inner surface of the positioning ring groove (142) is an arc surface; the lower end of the locking rod (14) is inclinedly provided with a guide cone surface (143).
3. A positioning locking and releasing device based on electromagnetic control according to claim 2, characterized in that: A first annular groove is arranged on the lower side wall of the upper cover plate (22), and a rubber limiting ring (221) and a plurality of steel balls (222) are arranged inside the first annular groove; limiting holes (223) having the same number as the steel balls (222) are opened on the inner side wall of the first annular groove for limiting the steel balls (222); the rubber limiting ring (221) is embedded in the first annular groove and sleeved on the outside of the steel balls (222); the protruding part of the steel balls (222) into the inner cavity of the upper cover plate (22) is used to fit into the inner surface of the positioning ring groove (142).
4. The electromagnetically controlled positioning locking and releasing device according to claim 1, characterized in that: A receiving cavity (231) is provided above the lower cover plate (23) and is open toward one side of the interior of the main bracket (21); a fixing pile (232) is provided at the bottom of the receiving cavity (231), and a buffer column (233) is fixedly provided above the fixing pile (232); a return spring (234) is sleeved on the fixing pile (232), and the upper end of the return spring (234) is connected to the sliding electromagnetic module; a buffer spring (235) is sleeved on the buffer column (233), and the upper end of the buffer spring (235) passes through the sliding electromagnetic module and abuts against the locking rod (14).
5. A positioning locking and releasing device based on electromagnetic control according to claim 4, characterized in that: The fixed electromagnetic module comprises a fixed coil (24) and a fixed coil seat (25); the fixed coil seat (25) is hollow inside, and its inner diameter is larger than the outer diameter of the fixed pile (232); the lower part of the fixed coil seat (25) is embedded in the accommodating cavity (231); a second annular groove is provided on the lower side wall of the fixed coil seat (25), and the fixed coil (24) is embedded in the second annular groove and sleeved on the fixed coil seat (25).
6. A positioning locking and releasing device based on electromagnetic control according to claim 5, characterized in that: The lower diameter of the main support (21) is larger than the upper diameter, and a step is provided in the middle; there is a certain gap between the upper end surface of the lower cover plate (23) and the middle step of the main support (21); a boss is provided on the upper part of the fixed coil seat (25) and is fixed between the lower cover plate (23) and the main support (21).
7. The electromagnetically controlled positioning locking and releasing device according to claim 5, characterized in that: An annular recess is arranged above the inner wall of the fixed coil seat (25) for embedding the sliding electromagnetic module; the sliding electromagnetic module comprises a sliding coil (26) and a sliding coil seat (27); the upper part of the sliding coil seat (27) is sleeved on the lower part of the upper cover plate (22), and the lower part can be embedded in the annular recess; the sliding coil (26) is embedded in the side wall of the sliding coil seat (27); the inner side wall of the main bracket (21) and the side wall of the annular recess form a moving cavity of the sliding coil seat (27), and the lower part of the upper cover plate (22) serves as a guide column of the sliding coil seat (27); the sliding coil seat (27) slides inside the moving cavity.
8. The electromagnetically controlled positioning locking and releasing device according to claim 7, characterized in that: The sliding coil seat (27) is hollow inside, and the inner diameter of the sliding coil seat (27) is smaller than the diameter of the reset spring (234). The reset spring (234) abuts against the lower end surface of the sliding coil seat (27); the buffer spring (235) passes through the sliding coil seat (27) and abuts against the locking rod (14) to buffer the movement of the locking rod (14).