Electromagnetic locking mechanism and reactor movement equipment

Abstract

This application relates to the field of nuclear reactor engineering technology, and provides an electromagnetic locking mechanism and a reactor motion device, including a moving component, a shell, an electromagnet assembly, a clamping assembly, and an engaging assembly. The shell has a receiving cavity and a clamping opening. The electromagnet assembly is fixedly connected to the shell. The clamping assembly includes a locking member, one end of which is fixed to the end of the shell near the clamping opening, and the moving component passes through the clamping opening into the clamping assembly. The engaging assembly has a pushing part and a releasing part, and can engage with the electromagnet assembly so that the pushing part abuts against the locking member, and the locking member locks the moving component. After the electromagnet assembly is de-energized, the engaging assembly can move away from the electromagnet assembly so that the releasing part aligns with the locking member, and the locking member releases the moving component. In the event of an accident or power failure, the electromagnetic locking mechanism can automatically disengage and release the moving component. The stroke of the released moving component is purely mechanical, with high operational reliability.

Description

Technical Field

[0001] The present application relates to the field of nuclear reactor engineering technology, and in particular to an electromagnetic locking mechanism and a motion device of a reactor. Background Art

[0002] In the field of nuclear reactor engineering technology, an electromagnetic locking mechanism with small size, reliable operation, simple and convenient control needs to be installed on a certain moving part. When in the locked state, the locking mechanism can withstand a large axial tensile force. In the event of an accident or power failure, the electromagnetic locking mechanism can automatically disengage and release the locking end. There is no such electromagnetic locking mechanism on the existing nuclear reactor. Summary of the invention

[0003] In view of this, an embodiment of the present application is to provide an electromagnetic locking mechanism with a compact and reliable structure to ensure the safety of moving equipment of a nuclear reactor.

[0004] To achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0005] An embodiment of the present application provides an electromagnetic locking mechanism, including:

[0006] Moving parts;

[0007] A housing is formed with a receiving cavity and a clamping opening, wherein the clamping opening is used to pass the moving part;

[0008] An electromagnet assembly is located in the accommodating cavity, and the electromagnet assembly is fixedly connected to the housing;

[0009] A clamping assembly is located in the accommodating cavity, the clamping assembly includes a locking member, one end of the clamping assembly is fixed to an end of the housing close to the clamping opening, and the moving member is inserted into the clamping assembly through the clamping opening; and

[0010] An attraction assembly is located in the accommodating cavity, the attraction assembly is formed with a push portion and a release portion, and the attraction assembly can be attracted to the electromagnet assembly so that the push portion abuts against the locking member, and the locking member locks the moving member;

[0011] After the electromagnet assembly is powered off, the suction assembly can move in a direction away from the electromagnet assembly so that the release portion is aligned with the locking member, and the locking member releases the moving member.

[0012] In some embodiments, the suction assembly includes:

[0013] An outer sleeve, the clamping assembly is sleeved in the outer sleeve, and the pushing portion and the releasing portion are formed on the inner circumferential surface of the outer sleeve;

[0014] A magnetic conductor is fixedly connected to the outer sleeve, and after the electromagnet assembly is energized, the magnetic conductor can move in a direction close to the electromagnet assembly and be attracted to the electromagnet assembly; and

[0015] The outer elastic member is connected to the outer sleeve. After the electromagnet assembly is powered off, the outer elastic member can drive the outer sleeve and the magnetic conductor to move in a direction away from the electromagnet assembly.

[0016] In some embodiments, the inner circumferential wall of the outer sleeve is formed with a first annular surface, a second annular surface, and a third annular surface connecting the first annular surface and the second annular surface, the diameter of the first annular surface is smaller than the diameter of the second annular surface, the pushing portion is the first annular surface, and the releasing portion is the second annular surface or the third annular surface.

[0017] In some embodiments, the first annular surface is a cylindrical surface; and / or, the second annular surface is a cylindrical surface; and / or, the third annular surface is a conical surface.

[0018] In some embodiments, the electromagnet assembly is fixedly connected to the upper end of the shell, the upper end of the outer elastic member is connected to the upper end of the shell, and the lower end of the outer elastic member is connected to the outer sleeve; or,

[0019] The electromagnet assembly is fixedly connected to the upper end of the shell, the upper end of the outer elastic member is connected to the outer sleeve, and the lower end of the outer elastic member is connected to the lower end of the shell; or,

[0020] The electromagnet assembly is fixedly connected to the lower end of the shell, the upper end of the outer elastic member is connected to the upper end of the shell, and the lower end of the outer elastic member is connected to the outer sleeve; or,

[0021] The electromagnet assembly is fixedly connected to the lower end of the shell, the upper end of the outer elastic member is connected to the outer sleeve, and the lower end of the outer elastic member is connected to the lower end of the shell.

[0022] In some embodiments, the outer sleeve is formed with a flange, the outer elastic member is connected to the flange, and the magnetic conductor is fixedly connected to the flange.

[0023] In some embodiments, the clamping assembly also includes a middle sleeve, the lower end of the middle sleeve is fixed to one end of the shell near the clamping opening, the movable part is inserted into the middle sleeve through the clamping opening, and at least one locking groove is formed on the circumferential wall of the middle sleeve, and the locking part can move in the locking groove.

[0024] In some embodiments, the locking member is a sphere, and the moving member is formed with an annular groove that cooperates with the sphere; or,

[0025] The locking piece is a sphere, and the moving piece is formed with a groove matched with the sphere.

[0026] In some embodiments, the electromagnetic locking mechanism further includes a stop assembly, the upper end of which is connected to the housing, and after the electromagnet assembly is powered off, the stop assembly abuts against the locking member.

[0027] In some embodiments, the stop assembly includes:

[0028] an inner sleeve, sleeved in the clamping assembly; and

[0029] The inner elastic member has two ends connected to the inner sleeve and the shell respectively, and the inner elastic member has an elastic force to push the inner sleeve out along the clamping opening direction so that the circumferential wall of the inner sleeve can abut against the locking member after the electromagnet assembly is powered off.

[0030] In some embodiments, a limiting protrusion ring is formed at one end of the inner sleeve away from the clamping opening to prevent the inner sleeve from sliding out of the clamping assembly.

[0031] In some embodiments, the electromagnetic locking mechanism also includes a guide tube connected to the clamping opening, the movable part is passed through the guide tube and is arranged in the clamping opening, the movable part is formed with a guide convex ring, and the guide convex ring is slidably connected to the inner circumferential wall of the guide tube.

[0032] Another aspect of the present application provides a motion device for a reactor, including:

[0033] An electromagnetic locking mechanism as described in any one of the above.

[0034] An electromagnetic locking mechanism provided in an embodiment of the present application includes a housing, an electromagnet assembly, a clamping assembly, an attraction assembly, and a moving part. In the event of an accident or power failure, the electromagnet assembly loses power, the attraction assembly moves in a direction away from the electromagnet assembly, and the locking member of the clamping assembly returns to the release portion of the attraction assembly, thereby disengaging the moving part, and the moving part can move under its own weight or external force. When in the power-on locking state, the pushing portion abuts the locking member, and the locking member locks the moving part, and the locking member can withstand a large axial tensile force. After the electromagnetic locking mechanism is powered off, the stroke of the clamping assembly to loosen the moving part is a purely mechanical operation, which can be widely used in existing moving equipment of nuclear reactors and has high working reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a structural schematic diagram of an electromagnetic locking mechanism in an embodiment of the present application in a power-on locking state;

[0036] Figure 2This is a structural schematic diagram of an electromagnetic locking mechanism in an embodiment of the present application in a power-off release state;

[0037] Figure 3 It is a structural schematic diagram of the electromagnetic locking mechanism in one embodiment of the present application, which schematically shows that the electromagnet assembly is located at the lower end of the housing;

[0038] Figure 4 is a schematic structural diagram of an electromagnetic locking mechanism in an embodiment of the present application, which schematically shows that the outer elastic member is located between the lower end of the shell and the outer sleeve; and

[0039] Figure 5 Schematic diagram of the structure of the moving parts of the electromagnetic locking mechanism in one embodiment of the present application.

[0040] Description of reference numerals:

[0041] Moving part 1; annular groove 1a; guiding convex ring 11; shell 2; accommodating chamber 2a; clamping opening 2b; electromagnet assembly 3; clamping assembly 4; locking member 41; middle sleeve 42; locking groove 42a; step surface 421; suction assembly 5; first annular surface 51; second annular surface 52; outer sleeve 53; flange 531; magnetic conductor 54; outer elastic member 55; third annular surface 56; stop assembly 6; inner sleeve 61; limiting convex ring 611; inner elastic member 62; guide tube 7. DETAILED DESCRIPTION

[0042] It should be noted that the various embodiments / implementations provided in this application can be combined with each other without causing any contradiction. The detailed description in the specific implementation mode should be understood as an explanation of the purpose of this application and should not be regarded as an improper limitation on this application.

[0043] In the description of this application, the terms "upper" and "lower" refer to the position or location of Figure 1 The orientation or positional relationship of the electromagnetic locking mechanism of the present invention should be understood to be that these orientation terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. The terms "first / second" are only used to distinguish different objects, and do not indicate that there is any similarity or connection between the two.

[0044] The present application provides an electromagnetic locking mechanism. Figure 1The electromagnetic locking mechanism includes a moving part 1, a shell 2, an electromagnet assembly 3, a clamping assembly 4 and an attraction assembly 5. The shell 2 is formed with a housing chamber 2a and a clamping opening 2b, and the clamping opening 2b is used to pass the moving part 1. The electromagnet assembly 3 is located in the housing chamber 2a, and the electromagnet assembly 3 is fixedly connected to the shell 2. Specifically, the electromagnet assembly 3 includes a yoke and a coil, and the coil is wound on the yoke. The coil after being energized can make the yoke generate a certain magnetic attraction. The clamping assembly 4 is located in the housing chamber 2a, and the clamping assembly 4 includes a locking member 41. One end of the clamping assembly 4 is fixed to one end of the shell 2 close to the clamping opening 2b, and the moving part 1 is passed through the clamping assembly 4 through the clamping opening 2b. The attraction assembly 5 is located in the housing chamber 2a, and the attraction assembly 5 is formed with a push portion and a release portion. The attraction assembly 5 can be attracted to the electromagnet assembly 3 so that the push portion abuts against the locking member 41, and the locking member 41 locks the moving part 1. After the electromagnet assembly 3 is powered off, the pull-in assembly 5 can move away from the electromagnet assembly 3 so that the release portion is aligned with the locking member 41, and the locking member 41 releases the moving member 1. In other words, the electromagnetic locking mechanism has two states, namely, a power-on locking state and a power-off releasing state.

[0045] When the electromagnetic locking mechanism is in the power-off release state, the electromagnet assembly 3 is de-energized, the locking member 41 is aligned with the release portion, and the moving part 1 and the locking member 41 are in a disengaged state. When the electromagnetic locking mechanism is energized, the electromagnet assembly 3 is energized, and the internal magnetic yoke of the electromagnet assembly 3 will have a magnetic attraction to attract the suction assembly 5 to be attracted to the electromagnet assembly 3, so that the clamping assembly 4 and the suction assembly 5 produce relative movement, so that the locking member 41 is separated from the release portion, the push portion is aligned with the locking member 41, and the push portion drives the locking member 41 to lock the moving part 1, and the electromagnetic locking mechanism is converted to the power-on locking state.

[0046] When the electromagnetic locking mechanism is in the power-on locking state, the electromagnet assembly 3 is powered, the pull-in assembly 5 and the electromagnet assembly 3 are in the pull-in state, the push portion is aligned with the locking member 41, and the locking member 41 locks the moving member 1. When the electromagnetic locking mechanism is powered off, the electromagnet assembly 3 loses power, the magnetic yoke inside the electromagnet loses its magnetic attraction, and the pull-in assembly 5 is separated from the electromagnet assembly 3, so that the release portion is aligned with the locking member 41, so that the locking member 41 loosens the moving member 1, and the electromagnetic locking mechanism is converted to the power-off release state.

[0047] On the one hand, in the case of an accident or power failure, the electromagnetic locking mechanism provided by the embodiment of the present application, the electromagnet assembly 3 loses power, the suction assembly 5 moves in a direction away from the electromagnet assembly 3, and the locking member 41 of the clamping assembly 4 returns to the release portion of the suction assembly 5, thereby disengaging the moving part 1, and the moving part 1 can move under its own weight or external force. When the power is on and locked, the push part abuts the locking member 41, and the locking member 41 locks the moving part 1, and the locking member 41 can withstand a large axial tension. On the other hand, the various components of the electromagnetic locking mechanism are all located in the housing 2, and the structure is compact. Only the electromagnet assembly 3 needs to be powered on and off to achieve locking or loosening control, and the control is simple and convenient. On the other hand, after the electromagnetic locking mechanism is powered off, the stroke of the clamping assembly 4 to loosen the moving part 1 is a purely mechanical operation, which can be widely used in the motion equipment of existing nuclear reactors and has high working reliability.

[0048] There is no limitation on the connection mode between the electromagnet assembly 3 and the housing 2 and the connection mode between the clamping assembly 4 and the housing 2. Exemplarily, the connection modes include but are not limited to bolt connection, screw connection, welding, adhesive connection, etc.

[0049] In one embodiment, see Figure 1 , the suction assembly 5 includes an outer sleeve 53, a magnetizer 54 and an outer elastic member 55. The clamping assembly 4 is sleeved in the outer sleeve 53, and a push portion and a release portion are formed on the inner circumference of the outer sleeve 53. The magnetizer 54 is fixedly connected to the outer sleeve 53. After the electromagnet assembly 3 is energized, the magnetizer 54 can move in a direction close to the electromagnet assembly 3 and be attracted to the electromagnet assembly 3. In other words, the magnetizer 54 provided on the outer sleeve 53 can be attracted by the yoke of the electromagnet assembly 3 after energization, thereby driving the outer sleeve 53 and the outer elastic member 55 connected to the outer sleeve 53 to move in the direction of the electromagnet assembly 3, so that the push portion located on the inner circumference of the outer sleeve 53 is aligned with the locking member 41, thereby locking the moving member 1.

[0050] The outer elastic member 55 is connected to the outer sleeve 53. After the electromagnet assembly 3 is powered off, the outer elastic member 55 can drive the outer sleeve 53 and the magnetizer 54 to move in a direction away from the electromagnet assembly 3. In other words, the outer elastic member 55 is elastic and can provide elastic force to move the outer sleeve 53 and the magnetizer 54 in a direction away from the electromagnet assembly 3. After the power is turned off, the magnetizer 54 is no longer subjected to the magnetic attraction of the electromagnet assembly 3. The outer elastic member 55 can drive the outer sleeve 53 and the magnetizer 54 away from the electromagnet assembly 3, so that the release portion on the inner circumference of the outer sleeve 53 is aligned with the locking member 41, and the moving member 1 is loosened.

[0051] The material of the magnetizer 54 is not limited, and the magnetizer 54 includes but is not limited to a mixed material containing magnetic metals such as iron, nickel, or cobalt. For example, in one embodiment, the magnetizer 54 is an armature, which is low in cost and easy to process.

[0052] There is no limitation on the connection method between the magnetic conductor 54 and the outer sleeve 53. By way of example, the connection method includes but is not limited to bolt connection, screw connection, welding, adhesive connection, etc.

[0053] The specific structure of the external elastic member 55 is not limited. By way of example, the external elastic member 55 includes but is not limited to a spring, a bellows, and the like.

[0054] The connection position between the magnetic conductor 54 and the outer sleeve 53 and the connection position between the outer elastic member 55 and the outer sleeve 53 are not limited, and the connection node can be set at a suitable position such as the end of the outer sleeve 53, the circumferential wall, etc. Figure 2 The outer sleeve 53 is formed with a flange 531, the outer elastic member 55 is connected to the flange 531, and the magnet 54 is fixedly connected to the flange 531. By providing the flange 531, the outer elastic member 55 and the magnet 54 can be more stably connected to the outer sleeve 53 through the flange 531, so as to transmit the elastic force and the magnetic attraction force.

[0055] In one embodiment, see Figure 1 and Figure 2 The inner circumferential wall of the outer sleeve 53 is formed with a first annular surface 51, a second annular surface 52, and a third annular surface 56 connecting the first annular surface 51 and the second annular surface 52. The diameter of the first annular surface 51 is smaller than the diameter of the second annular surface 52. The pushing portion is the first annular surface 51, and the releasing portion is the second annular surface 52. In other words, the clamping assembly 4 locks and releases the moving part 1 through the abutment between the inner circumferential wall of the outer sleeve 53 and the locking member 41. When the locking member 41 is aligned with the first annular surface 51, the first annular surface 51 will push the locking member to move in the radial direction close to the moving part 1, so that the locking member 41 locks the moving part 1. When the locking piece 41 is aligned with the second annular surface 52, since the diameter of the second annular surface 52 is larger than that of the first annular surface 51, the second annular surface 52 can provide space for the locking piece 41 to loosen the moving part 1. Subsequently, under the action of external force, the moving part 1 can push the locking piece away from the moving part 1 in a radial direction, thereby causing the locking piece 41 to loosen from the moving part 1.

[0056] In one embodiment, the inner peripheral wall of the outer sleeve 53 is formed with a first annular surface 51, a second annular surface 52, and a third annular surface 56 connecting the first annular surface 51 and the second annular surface 52. The diameter of the first annular surface 51 is smaller than the diameter of the second annular surface 52. The pushing portion is the first annular surface 51, and the releasing portion is the third annular surface 56. Since the third annular surface 56 is connected between the first annular surface 51 and the second annular surface 52, the third annular surface 56 can play a transition effect and can also provide space for the locking member 41 to loosen the moving member 1.

[0057] In one embodiment, the first annular surface 51 is a cylindrical surface. Since the first annular surface 51 is used to lock the moving part 1, and the normal of the cylindrical surface is perpendicular to the axial direction of the moving part 1, the first annular surface 51 can be subjected to only the force perpendicular to the axial direction of the moving part 1, and not to the force component along the axial direction of the moving part 1. In this way, the suction force generated by the electromagnet assembly 3 only needs to overcome the spring force of the external elastic member 55 to maintain the locking state, thereby improving the reliability of the electromagnetic locking mechanism.

[0058] In one embodiment, the second annular surface 52 is a cylindrical surface, so that the outer sleeve 53 can be compact in structure.

[0059] In one embodiment, the third annular surface 56 is a conical surface. Exemplarily, the diameter of the conical surface of the third annular surface 56 gradually increases in the direction away from the first annular surface 51 until the third annular surface 56 is connected to the second annular surface 52. In this way, when the locking member 41 switches from the cooperation with the second annular surface 52 to the cooperation with the first annular surface 51, the third annular surface 56 set as a conical surface has a transition effect, which can make the switching of the electromagnetic locking mechanism between the power-on locking state and the power-off release state smoother and less prone to jamming.

[0060] In one embodiment, see Figure 1 to Figure 4 , the electromagnet assembly 3 is fixedly connected to the upper end of the housing 2, the upper end of the outer elastic member 55 is connected to the upper end of the housing 2, and the lower end of the outer elastic member 55 is connected to the outer sleeve 53; or,

[0061] The electromagnet assembly 3 is fixedly connected to the upper end of the housing 2, the upper end of the outer elastic member 55 is connected to the outer sleeve 53, and the lower end of the outer elastic member 55 is connected to the lower end of the housing 2; or,

[0062] The electromagnet assembly is fixedly connected to the lower end of the shell, the upper end of the outer elastic member is connected to the upper end of the shell, and the lower end of the outer elastic member is connected to the outer sleeve; or,

[0063] The electromagnet assembly is fixedly connected to the lower end of the housing, the upper end of the outer elastic member is connected to the outer sleeve, and the lower end of the outer elastic member is connected to the lower end of the housing. That is, the electromagnet assembly 3 and the outer elastic member 55 can be arranged in at least four ways in the housing 2.

[0064] For example, see Figure 1 and Figure 2 , the electromagnet assembly 3 is fixedly connected to the upper end of the housing 2. The outer elastic member 55 is, for example, a compression spring, which abuts between the upper end of the housing 2 and the outer sleeve 53. When the electromagnet assembly 3 is powered on, the locking member 41 is aligned with the push portion, and the outer elastic member 55 is in a compressed state. After the electromagnet assembly 3 is powered off, the outer elastic member 55 can provide a downward thrust along the axial direction of the moving member 1 to align the locking member 41 with the release portion.

[0065] For example, see Figure 4, the electromagnet assembly 3 is fixedly connected to the upper end of the housing 2. The outer elastic member 55 is, for example, a tension spring, which abuts between the lower end of the housing 2 and the outer sleeve 53. When the electromagnet assembly 3 is powered on, the locking member 41 is aligned with the push portion, and the outer elastic member 55 is in a tension state. After the electromagnet assembly 3 is powered off, the outer elastic member 55 can provide a downward pulling force along the axial direction of the moving member 1 to align the locking member 41 with the release portion.

[0066] For example, see Figure 3 , the electromagnet assembly 3 is fixedly connected to the lower end of the housing 2. The outer elastic member 55 is, for example, a compression spring, which abuts between the lower end of the housing 2 and the outer sleeve 53. When the electromagnet assembly 3 is powered on, the locking member 41 is aligned with the push portion, and the outer elastic member 55 is in a compressed state. After the electromagnet assembly 3 is powered off, the outer elastic member 55 can provide an axially upward thrust along the moving member 1 to align the locking member 41 with the release portion.

[0067] Similarly, the electromagnet assembly 3 can also be fixedly connected to the lower end of the housing 2. The external elastic member 55 is, for example, a tension spring, which abuts between the upper end of the housing 2 and the outer sleeve 53. When the electromagnet assembly 3 is powered on, the locking member 41 is aligned with the push portion, and the external elastic member 55 is in a tension state. After the electromagnet assembly 3 is powered off, the external elastic member 55 can provide an axially upward pulling force along the moving member 1 to align the locking member 41 with the release portion.

[0068] In one embodiment, see Figure 1 The clamping assembly 4 further includes a middle sleeve 42, the lower end of which is fixed to one end of the housing 2 near the clamping opening 2b, and the moving part 1 is inserted into the middle sleeve 42 through the clamping opening 2b. At least one locking groove 42a is formed on the circumferential wall of the middle sleeve 42, and the locking part 41 can move in the locking groove 42a. On the one hand, the middle sleeve 42 can play a certain guiding role for the movement of the moving part 1. On the other hand, the locking groove 42a can limit the locking part 41, and can ensure that the locking part can only move in the radial direction of the moving part 1.

[0069] Exemplarily, in one embodiment, three locking grooves 42a are formed on the middle sleeve 42 and are evenly arranged along the circumference of the middle sleeve 42. The shape of the locking grooves 42a is adapted to the shape of the locking member 41 to facilitate the movement of the locking member 41 in the locking grooves 42a.

[0070] In one embodiment, see Figure 1 and Figure 5 The locking member 41 is a sphere, and the moving member 1 is formed with an annular groove 1a that matches the sphere. Exemplarily, the annular groove 1a is an arc surface annular groove 1a that is recessed into the moving member 1, and the arc radius of the arc surface is slightly larger than the radius of the sphere to facilitate locking with it. At the same time, by adjusting the arc radius of the arc surface, the axial play clearance of the moving member 1 when being locked can be controlled.

[0071] In one embodiment, the locking member 41 is a sphere, and the moving member 1 is formed with a groove that matches the sphere. The groove has little effect on the structural strength of the moving member 1, and can be adapted to make the matching between the moving member 1 and the sphere more compact. Exemplarily, the groove is set as a hemispherical surface, and the radius of the hemispherical surface is slightly larger than the radius of the sphere to facilitate matching and locking with it. At the same time, by adjusting the radius of the hemispherical surface, the axial play clearance of the moving member 1 when it is locked can be controlled.

[0072] In one embodiment, see Figure 1 and Figure 2 The electromagnetic locking mechanism also includes a stopper assembly 6, the upper end of which is connected to the housing 2. After the electromagnet assembly 3 is powered off, the lower end of the stopper assembly 6 can push the moving part 1 out of the locked position and abut against the locking member 41. In other words, after the electromagnet assembly 3 is powered off, the locking member 41 loosens the moving part 1, and the moving part 1 may be directly moved axially downward by an external force, or it may not be affected by an external force, and the moving part 1 is pushed axially downward out of the locked position by the stopper assembly 6. Therefore, on the one hand, the stopper assembly 6 is provided to abut against the locking member 41 after the locking member 41 loosens the moving part 1, thereby reducing the probability of the locking member 41 coming out and improving the reliability of the electromagnetic locking mechanism. On the other hand, the stopper assembly 6 can provide a partial thrust force to push the moving part 1 axially downward, which helps to loosen the moving part 1 after the power is off.

[0073] Specifically, in one embodiment, see Figure 1 and Figure 2 The stopper assembly 6 includes an inner sleeve 61 and an inner elastic member 62. The inner sleeve 61 is sleeved in the clamping assembly 4. The two ends of the inner elastic member 62 are respectively connected to the inner sleeve 61 and the housing 2. The inner elastic member 62 has an elastic force to push the inner sleeve 61 out in the direction of the clamping opening 2b, so that the circumferential wall of the inner sleeve 61 can abut against the locking member 41 after the electromagnet assembly 3 is powered off.

[0074] The specific structure of the inner elastic member 62 is not limited. By way of example, the inner elastic member 62 includes but is not limited to a spring, a bellows, and the like.

[0075] The connection position of the inner elastic member 62 is not limited, and a connection node can be set at a suitable position such as the end of the inner sleeve 61, the circumferential wall, etc. For example, see Figure 1 and Figure 2 The inner elastic member 62 abuts between the upper end of the shell 2 and the upper end of the inner sleeve 61 .

[0076] In one embodiment, see Figure 2The inner sleeve 61 is formed with a stop ring 611 at one end away from the clamping opening 2b to prevent the inner sleeve 61 from slipping out of the clamping assembly 4. For example, a step surface 421 is correspondingly provided on the middle sleeve 42, and the stop ring 611 and the step surface 421 stop each other to prevent the inner sleeve 61 from moving excessively and falling out of the housing 2 after the moving part 1 moves out in the axial direction.

[0077] In one embodiment, see Figure 1 , Figure 2 and Figure 5 The electromagnetic locking mechanism further includes a guide tube 7 connected to the clamping opening 2b, and the moving part 1 is inserted into the clamping opening 2b through the guide tube 7. The moving part 1 is formed with a guide convex ring 11. The guide convex ring 11 is slidably connected to the inner peripheral wall of the guide tube 7. When the moving part 1 moves in the guide tube 7, the guide convex ring 11 ensures the coaxiality of the moving part 1 and the guide tube 7.

[0078] For example, in one embodiment, see Figure 5 The annular surface of the guide protruding ring 11 in contact with the inner peripheral wall of the guide tube 7 is an arc surface protruding toward the outside of the moving part 1, which is conducive to the smooth insertion of the moving part 1 into the clamping opening 2b. The end of the middle sleeve 42 close to the clamping opening 2b and the moving part 1 are both provided with chamfers to facilitate the insertion of the moving part 1 into the middle sleeve 42.

[0079] Another aspect of the present application provides a reactor motion device, including any one of the above-mentioned electromagnetic locking mechanisms. The electromagnetic locking mechanism provided by the present application has a small size and high reliability, and can be used as a key device in the reactor motion device.

[0080] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An electromagnetic locking mechanism, characterized in that: include: Moving parts; A housing is formed with a receiving cavity and a clamping opening, wherein the clamping opening is used to pass the moving part; An electromagnet assembly is located in the accommodating cavity, and the electromagnet assembly is fixedly connected to the housing; A clamping assembly is located in the accommodating cavity, the clamping assembly includes a locking member, one end of the clamping assembly is fixed to an end of the housing close to the clamping opening, and the moving member is inserted into the clamping assembly through the clamping opening; as well as The suction assembly is located in the accommodating cavity, and the suction assembly includes an outer sleeve, a magnetizer and an outer elastic member. The clamping assembly is sleeved in the outer sleeve, and a pushing portion and a releasing portion are formed on the inner circumferential surface of the outer sleeve; the magnetizer is fixedly connected to the outer sleeve, and after the electromagnet assembly is energized, the magnetizer can move in a direction close to the electromagnet assembly and be attracted to the electromagnet assembly, so that the pushing portion abuts against the locking member, and the locking member locks the moving member; the outer elastic member is connected to the outer sleeve, and after the electromagnet assembly is powered off, the outer elastic member can drive the outer sleeve and the magnetizer to move in a direction away from the electromagnet assembly, so that the releasing portion is aligned with the locking member, and the locking member loosens the moving member; The inner peripheral wall of the outer sleeve is formed with a first annular surface, a second annular surface, and a third annular surface connecting the first annular surface and the second annular surface, the diameter of the first annular surface is smaller than the diameter of the second annular surface, the pushing portion is the first annular surface, and the releasing portion is the second annular surface or the third annular surface; The clamping assembly further comprises a middle sleeve, the lower end of which is fixed to one end of the housing close to the clamping opening, the moving member is inserted into the middle sleeve through the clamping opening, at least one locking groove is formed on the circumferential wall of the middle sleeve, and the locking member can move in the locking groove; The locking member is a sphere, and the moving member is formed with an annular groove that matches the sphere; or, The locking piece is a sphere, and the moving piece is formed with a groove matched with the sphere.

2. The electromagnetic locking mechanism according to claim 1, characterized in that: The first annular surface is a cylindrical surface; and / or the second annular surface is a cylindrical surface; and / or the third annular surface is a conical surface.

3. The electromagnetic locking mechanism according to claim 1, characterized in that: The electromagnet assembly is fixedly connected to the upper end of the shell, the upper end of the outer elastic member is connected to the upper end of the shell, and the lower end of the outer elastic member is connected to the outer sleeve; or, The electromagnet assembly is fixedly connected to the upper end of the shell, the upper end of the outer elastic member is connected to the outer sleeve, and the lower end of the outer elastic member is connected to the lower end of the shell; or, The electromagnet assembly is fixedly connected to the lower end of the shell, the upper end of the outer elastic member is connected to the upper end of the shell, and the lower end of the outer elastic member is connected to the outer sleeve; or, The electromagnet assembly is fixedly connected to the lower end of the shell, the upper end of the outer elastic member is connected to the outer sleeve, and the lower end of the outer elastic member is connected to the lower end of the shell.

4. The electromagnetic locking mechanism according to claim 1, characterized in that: The outer sleeve is formed with a flange, the outer elastic member is connected to the flange, and the magnetic conductor is fixedly connected to the flange.

5. The electromagnetic locking mechanism according to any one of claims 1 to 4, characterized in that: The electromagnetic locking mechanism also includes a stopper assembly, the upper end of which is connected to the housing. After the electromagnet assembly is powered off, the stopper assembly abuts against the locking member.

6. The electromagnetic locking mechanism according to claim 5, characterized in that: The stopper assembly comprises: an inner sleeve, sleeved in the clamping assembly; and The inner elastic member has two ends connected to the inner sleeve and the shell respectively, and the inner elastic member has an elastic force to push the inner sleeve out along the clamping opening direction so that the circumferential wall of the inner sleeve can abut against the locking member after the electromagnet assembly is powered off.

7. The electromagnetic locking mechanism according to claim 6, characterized in that: A limiting convex ring is formed at one end of the inner sleeve away from the clamping opening to prevent the inner sleeve from sliding out of the clamping assembly.

8. The electromagnetic locking mechanism according to any one of claims 1 to 4, characterized in that: The electromagnetic locking mechanism also includes a guide tube connected to the clamping opening, the moving part is inserted into the clamping opening through the guide tube, and the moving part is formed with a guide convex ring, which is slidably connected to the inner peripheral wall of the guide tube.

9. A motion device for a reactor, characterized in that: include: The electromagnetic locking mechanism according to any one of claims 1 to 8.

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