Component limiting device and electrical control cabinet

Abstract

The present invention discloses a component limiting device and an electrical control cabinet, comprising: a bracket; a locking mechanism, installed at one end of the bracket, comprising an end support and an intermediate ring, the end support is connected to the end of the intermediate ring; the intermediate ring is equipped with power teeth, the end support is equipped with a limiting structure, the power teeth are transmission-connected to the limiting structure, and the limiting structure is used to lock the components; a tensioning mechanism, installed on the bracket and connected to the power teeth; the tensioning mechanism is used to pull the power teeth and fix their positions, thereby driving the limiting mechanism to lock the components. A plurality of components and component limiting devices are installed in the electrical control cabinet. A component limiting device and an electrical control cabinet according to an embodiment of the present invention have a compact structure, are easy to install, and can accommodate larger processing errors, thereby improving the fatigue strength of the front-end constraints of components under vibration-resistant conditions.

Description

Technical Field

[0001] The invention relates to a mechanical limiting device, in particular to a component limiting device and an electrical control cabinet. Background Art

[0002] When electrical control cabinets and other cabinet products are subjected to impact vibration type tests, under the special requirement of one-sided maintenance of the cabinet, if the tail of the typical heavy and long deep components or assemblies in the cabinet is not sufficiently restrained, there is a risk that the tail will swing and the cabinet strength will not meet the standard. At present, when restraining the tail of heavy and long deep components or assemblies in the cabinet, the tail is often restrained by pin-hole matching. Due to the errors in solid welding and the manufacturing errors in the spacing of the pins of the components or assemblies themselves, in order to prevent the accumulation of errors and unsuccessful assembly during the overall design of the cabinet, designers often increase the hole diameter. In this way, there is a gap between the pins and holes in the actual assembled products and they do not play a limiting role. In the impact vibration type test, the force is completely borne by the constraints on the front end of the components or assemblies, which increases the difficulty of front-end constraint design. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a component limiting device and an electrical control cabinet, wherein the component limiting device includes a locking mechanism, which can limit the radial freedom of the component, so that the component can be evenly stressed when impacted, thereby improving the fatigue strength of the front-end constraint.

[0004] According to the first aspect of the present invention, the component limiting device of the embodiment includes: a bracket; a locking mechanism, installed at one end of the bracket, including an end support and an intermediate ring, the end support is connected to the end of the intermediate ring; the intermediate ring is equipped with a power tooth, the end support is equipped with a limiting structure, the power tooth is transmission-connected to the limiting structure, and the limiting structure is used to lock the component; a tensioning mechanism, installed on the bracket and connected to the power tooth, the tensioning mechanism is used to pull the power tooth and fix its position, thereby driving the limiting structure to lock the component.

[0005] A component limiting device according to an embodiment of the present invention has at least the following technical effects: when the tensioning mechanism moves, it can trigger the locking mechanism to lock the components inserted into the locking mechanism, thereby limiting the radial movement freedom of the components. The structure is compact and easy to install, and the locking mechanism can accommodate larger processing errors, increase the stability of the components under vibration impact, reduce the design difficulty of the front-end constraint, and improve the fatigue strength of the front-end constraint.

[0006] According to some embodiments of the present invention, the outer circumferential surface of the intermediate ring is provided with a tooth slot hole, and a cover plate is connected to the tooth slot hole; the power tooth is movably installed in the tooth slot hole, and the cover plate is pressed onto the power tooth.

[0007] According to some embodiments of the present invention, a transition gear is provided in the intermediate ring, and the power tooth and the limiting structure are connected via the transition gear.

[0008] According to some embodiments of the present invention, the transition gear includes an intermediate gear and an end gear, the end gear is connected to the end of the intermediate gear, the power tooth is connected to the intermediate gear, and the limiting structure is connected to the end gear.

[0009] According to some embodiments of the present invention, an embedding groove is provided at one end of the end gear facing the intermediate gear, and a positioning pin matching the embedding groove is provided at the end of the intermediate gear, and the positioning pin is embedded in the embedding groove to achieve the connection between the intermediate gear and the end gear.

[0010] According to some embodiments of the present invention, the limiting structure includes a toggle gear and a top tooth, and the toggle gear is detachably connected to the top tooth; the end support is provided with an airfoil groove, the toggle gear is meshed with the end gear, and the top tooth is installed in the airfoil groove.

[0011] According to some embodiments of the present invention, an end of the end gear facing the end support is provided with an internal tooth groove, and the toggle gear is installed in the internal tooth groove; the groove wall of the internal tooth groove and the outer side wall of the toggle gear are provided with mutually meshing gear teeth.

[0012] According to some embodiments of the present invention, the limiting structure further includes an eccentric block, and the eccentric block is installed between the toggle gear and the top gear, and is used to support and limit the toggle gear.

[0013] According to some embodiments of the present invention, the tensioning mechanism includes a connecting rod and an adjusting bolt, the adjusting bolt is connected to the power tooth through the connecting rod; the bracket is provided with a strip hole, the adjusting bolt is passed through the strip hole; the adjusting bolt can slide relative to the strip hole and fix its position.

[0014] According to the electrical control cabinet of the second embodiment of the present invention, a plurality of components and the component limiting device of the first embodiment are installed in the cabinet. According to an electrical control cabinet of the embodiment of the present invention, there are at least the following technical effects: in the electrical control cabinet equipped with the limiting device, the inertial force generated by the components in the cabinet due to vibration impact can be directly transmitted to the main frame of the cabinet through the contact position with the limiting device, so that the components are evenly stressed, thereby avoiding the secondary impact caused by insufficient constraint under the impact test, and improving the fatigue strength of the front-end constraint of the component under vibration resistance conditions.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 is a schematic diagram of the installation structure of an embodiment of the present invention;

[0018] Figure 2 is a cross-sectional view of an installation state of an embodiment of the present invention;

[0019] Figure 3 is a structural exploded view of the locking mechanism of the present invention;

[0020] Figure 4 It is a schematic diagram of the installation of the end support and the limiting structure of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the tensioning mechanism of the present invention.

[0022] Reference numerals:

[0023] Bracket 100, strip-shaped hole 110;

[0024] Locking mechanism 200, end support 210, wing-shaped groove 211, second screw hole 212, guide block 213, through hole 214, intermediate ring 220, power tooth 221, tooth groove hole 222, cover plate 223;

[0025] The tensioning mechanism 300, the connecting rod 310, the adjusting bolt 320, the screw rod 321, the head 322, and the nut 323;

[0026] The limiting structure 400, the shifting gear 410, the connecting pin 411, the top gear 420, the mounting hole 421, the eccentric block 430, the supporting portion 431, the first screw hole 432, and the guiding portion 433;

[0027] Transition gear 500 , intermediate gear 510 , positioning pin 511 , end gear 520 , inner tooth groove 521 , embedding groove 522 . DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Reference Figures 1 to 5A component limiting device according to an embodiment of the present invention comprises: a bracket 100; a locking mechanism 200, which is installed at one end of the bracket 100 and comprises an end support 210 and an intermediate ring 220, wherein the end support 210 is connected to the end of the intermediate ring 220; the intermediate ring 220 is provided with a power tooth 221, and the end support 210 is provided with a limiting structure 400, wherein the power tooth 221 is transmission-connected to the limiting structure 400, and the limiting structure 400 is used to lock the components. The components are arranged in the middle of the locking mechanism 200, that is, the middle of the end support 210 and the intermediate ring 220 are provided with holes for the components to pass through. Two end supports 210 are provided and are respectively connected to the two ends of the intermediate ring 220, and the two end supports 210 are symmetrically arranged, and the end support 210 and the intermediate ring 220 are connected by bolts. The center of the end support 210 is provided with a through hole 214 for components to pass through, and the limiting structure 400 is provided on the periphery of the through hole 214 to lock the components passing through the through hole 214. It should be noted that only the end support 210 is used to limit the components, and the middle ring 220 does not limit the components.

[0032] The tensioning mechanism 300 is installed on the bracket 100 and connected to the power tooth 221; the tensioning mechanism is used to pull the power tooth 221 and fix its position, thereby driving the limiting structure 400 to lock the components.

[0033] When the tensioning mechanism 300 moves, it can trigger the locking mechanism 200 to lock the components inserted into the locking mechanism 200, thereby limiting the radial movement freedom of the components. The structure is compact and easy to install, and can accommodate larger processing errors, increase the stability of the components under vibration impact, reduce the design difficulty of the front-end constraints, and improve the fatigue strength of the front-end constraints.

[0034] According to some embodiments of the present invention, the outer circumference of the intermediate ring 220 is provided with a tooth slot hole 222 , and a cover plate 223 is connected to the tooth slot hole 222 ; the power tooth 221 is movably installed in the tooth slot hole 222 , and the cover plate 223 is pressed onto the power tooth 221 .

[0035] According to some embodiments of the present invention, a transition gear 500 is disposed in the intermediate ring 220, and the power tooth 221 and the limiting structure 400 are connected via the transition gear 500. Figure 3 As shown, the center of the intermediate ring 220 is through, the transition gear 500 is installed at the center of the intermediate ring 220, and the tooth slot hole 222 is connected to the center of the intermediate ring 220. The power tooth 221 is installed in the tooth slot hole 222 and is in transmission connection with the transition gear 500. The adjustment bolt 320 pulls the power tooth 221 to move through the connecting rod 310, and then the power tooth 221 drives the transition gear 500 to rotate. The tooth slot hole 222 is a stepped hole, and the cover plate 223 is connected to the stepped surface of the tooth slot hole 222 by bolts. In addition, by Figure 3It can be seen that the transition gear 500 is axially limited by the power tooth 221. After the power tooth 221 is engaged with the transition gear 500, the cover plate 223 limits the power tooth 221 in the radial direction of the intermediate ring 220, so the transition gear 500 will be restrained by the power tooth 221 and cannot move freely along its axial direction.

[0036] According to some embodiments of the present invention, the transition gear 500 includes an intermediate gear 510 and an end gear 520, the end gear 520 is connected to the end of the intermediate gear 510, the power tooth 221 is connected to the intermediate gear 510, and the limiting structure 400 is connected to the end gear 520. Specifically, the diameter of the intermediate gear 510 is smaller than the end gear 520, the outer peripheral wall of the intermediate gear 510 is provided with gear teeth that are transmission-connected to the power tooth 221, the end gear 520 is transmission-connected to the limiting structure 400, and when the power tooth 221 drives the intermediate gear 510 to rotate around the central axis of the intermediate gear 510, the intermediate gear 510 can drive the end gear 520 to rotate synchronously.

[0037] According to some embodiments of the present invention, an embedding groove 522 is provided at one end of the end gear 520 facing the middle gear 510, and a positioning pin 511 matching the embedding groove 522 is provided at the end of the middle gear 510, and the positioning pin 511 is embedded in the embedding groove 522 to achieve the connection between the middle gear 510 and the end gear 520. Specifically, there are multiple embedding grooves 522, and the multiple embedding grooves 522 are arranged at intervals along the circumference; there are also multiple positioning pins 511, and the multiple positioning pins 511 are embedded in the multiple embedding grooves 522 to achieve the connection between the middle gear 510 and the end gear 520.

[0038] It is understandable that the intermediate gear 510 and the end gear 520 may also be connected in other ways, such as: a pin connection or a threaded connection.

[0039] According to some embodiments of the present invention, the limiting structure 400 includes a toggle gear 410 and a top gear 420, and the toggle gear 410 and the top gear 420 are detachably connected; the end support 210 is provided with an airfoil groove 211, the toggle gear 410 is meshed with the end gear 520, and the top gear 420 is installed in the airfoil groove 211. Specifically, as Figure 3As shown, the top tooth 420 is slidably installed in the wing-shaped slot 211, abutting against the slot wall of the wing-shaped slot 211, and can slide relative to the wing-shaped slot 211; the top tooth 420 is provided with a mounting hole 421. It can also be understood that the end support 210 facing the top tooth 420 is provided with a wing-shaped slot 211. There are two wing-shaped slots 211, and the two wing-shaped slots 211 are rotationally symmetrical about the central axis of the through hole 214 at 180 degrees; the through hole 214 is tangent to the wing-shaped slot 211. There are also two top teeth 420, and the two top teeth 200 are rotationally symmetrically installed in the wing-shaped slot 120. When the two top teeth 200 slide clockwise or counterclockwise in the same direction, they can lock the components. The toggle gear 410 is provided with a connecting pin 411, which can be inserted into the mounting hole 421 to connect the top gear 420 and the toggle gear 410; the mounting hole 421 is provided in the middle of the top gear 420, and the connecting pin 411 is provided at the end of the toggle gear 410. The end gear 520 is meshed with the toggle gear 410 for transmission. The toggle gear 410 rotates, driving the top gear 420 to rotate to lock the components penetrated in the end support 210.

[0040] According to some embodiments of the present invention, an inner tooth groove 521 is provided at one end of the end gear 520 facing the end support 210, and the toggle gear 410 is installed in the inner tooth groove 521; the groove wall of the inner tooth groove 521 and the outer wall of the toggle gear 410 are provided with gear teeth that mesh with each other. The center of the end gear 520 is also provided with a hole for the rod body to pass through, and the inner tooth groove 521 is a circular groove, and the groove wall of the inner tooth groove 521 is provided with gear teeth, and the outer wall of the toggle gear 410 is also provided with gear teeth, and the two mesh and transmit. It should be noted that during the rotation of the toggle gear 410, one end along its rotation direction will gradually break away from the contact with the end gear 520, but the rotation angle of the end gear 520 is not large, so the toggle gear 410 will always be partially engaged with the end gear 520.

[0041] In some embodiments of the present invention, the diameter of the airfoil slot 211 is greater than the diameter of the through hole 214, and the airfoil slot 211 is eccentrically arranged with respect to the through hole 214; the outer side wall of the top tooth 420 is in contact with the slot wall of the airfoil slot 211 and slides along its path, and the inner side surface of the top tooth 420 is coaxially arranged with the through hole 214. Specifically, the inner wall of the airfoil slot 211 includes two wall surfaces, one is an arcuate wall surface, and the other is a plane surface, and the outer side wall of the top tooth 420 is in contact with the arcuate wall surface of the airfoil slot 211 and slides along the arcuate wall surface. As can be seen from the above, the diameter of the airfoil slot 211 is greater than the diameter of the through hole 214, and the through hole 214 is inscribed in the airfoil slot 211, and the slot bottom of the airfoil slot 211 is in the shape of a "comma". The outer wall diameter of the top tooth 420 is consistent with the outer wall diameter of the wing-shaped groove 211, and the inner surface of the top tooth 420 is consistent with the diameter of the through hole 214. When the rod body passes through the through hole 214, the top tooth 420 can be completely received in the special-shaped groove; when the top tooth 420 slides along the arc-shaped wall surface of the wing-shaped groove 211, the top tooth 420 can partially slide into the through hole 214 and contact the rod body in the through hole 214, thereby limiting the rod body in the through hole 214.

[0042] In a further embodiment of the present invention, when the outer peripheral wall of the locked component is provided with threads, the effect of axially limiting the rod body can be achieved by providing threads on the inner side surface of the top teeth 420 .

[0043] Furthermore, the above embodiments are used under the condition that the components need to be fastened together with the electrical control cabinet. However, for components that generate their own disturbances, when such components are installed in the cabinet, the impact of their own disturbances on the cabinet can be reduced by installing vibration isolators; however, when facing strong impact conditions, the components will swing with a large displacement, which will affect the connection performance between the components and the outside, and may even bump into the internal structure of the cabinet. In order to allow the components to move and vibrate freely within a certain range, a rubber layer can be provided on the top teeth 420, so that the components can be buffered and limited when a strong impact occurs.

[0044] In some embodiments of the present invention, a guide block 213 extending from an end surface of the end support 210 is provided at one end thereof, and the guide block 213 is in contact with the shifting gear 410 to guide the shifting gear 410 .

[0045] In some embodiments of the present invention, the inner side surface of the guide block 213 coincides with the groove wall of the wing-shaped groove 211, and the outer side wall is in contact with the inner side surface of the shifting gear 410. Specifically, the guide block 213 is streamlined as a whole, and includes three surfaces, including an inner side surface and an outer side wall, and a vertical plane, which is perpendicular to the tangent plane of the wing-shaped groove 211 and the through hole 214. The inner side surface of the guide block 213 intersects with the outer side wall at the other end away from the vertical plane.

[0046] According to some embodiments of the present invention, the limiting structure 400 further includes an eccentric block 430, which is installed between the toggle gear 410 and the top tooth 420, and is used to support and limit the toggle gear 410. The eccentric block 430 includes a support portion 431 and a guide portion 433, the support portion 431 is embedded in the wing-shaped slot 211 and is detachably connected to the end support 210, the guide portion 433 is fixedly connected to the support portion 431 and extends out of the end surface of the end support 210, and the guide portion 433 is used to limit the toggle gear 410. Specifically, the support portion 431 is a fan-shaped body, which is installed in the wing-shaped slot 211 and is arranged on the top tooth 420. Since the top tooth 420 is restricted by the groove wall of the wing-shaped groove 211, the toggle gear 410 will be driven by the top tooth 420 during the rotation, so that one end of the toggle gear 410 is moved toward the center of the through hole 214. However, the thickness between the inner side surface and the outer side wall of the toggle gear 410 is not thick. During the rotation of the toggle gear 410, the toggle gear 410 may fall into the wing-shaped groove 211, and the support portion 431 can avoid this situation.

[0047] In some embodiments of the present invention, the outer wall of the support portion 431 is provided with a first screw hole 432, and the end support 210 is provided with a second screw hole 212 communicating with the wing-shaped slot 211. The second screw hole 212 is arranged corresponding to the first screw hole 432 and connected by screws. The support portion 431 is fan-shaped, and one side of the fan-shaped portion is in contact with the plane of the wing-shaped slot 211. The two are connected by screws, which is simple and easy to disassemble.

[0048] In some embodiments of the present invention, the inner side surface of the guide portion 433 coincides with the hole wall of the through hole 214, and the outer side wall is in contact with the inner side surface of the shifting gear 410. Figure 3 , Figure 4 It can be seen that the guide portion 433 and the guide block 213 are fitted together, but the inner side surface of the guide portion 433 and the inner side surface of the guide block 213 are inconsistent in curvature. The inner side surface of the guide portion 433 coincides with the hole wall of the through hole 214, while the inner side surface of the guide block 213 coincides with the groove wall of the wing-shaped groove 211. The purpose of this design is to prevent the inner side surface of the guide portion 433 from extending into the through hole 214, or the inner side surface of the guide block 213 from extending into the wing-shaped groove 211, causing interference to the moving parts. The guide portion 433 is equivalent to extending the guide block 213 to achieve a better guiding effect on the toggle gear 410, so that the top tooth 420 fits more closely with the rod body during the rotation process, and the rod body is locked more firmly.

[0049] According to some embodiments of the present invention, the tensioning mechanism 300 includes a connecting rod 310 and an adjusting bolt 320, the adjusting bolt 320 is connected to the power tooth 221 through the connecting rod 310; the bracket 100 is provided with a bar hole 110, and the adjusting bolt 320 is passed through the bar hole 110; the adjusting bolt 320 can slide relative to the bar hole 110 and fix its position. Figure 5 As shown, one end of the connecting rod 310 is threadedly connected with the power tooth 221, that is, a threaded hole is provided at one end of the power tooth 221 in the length direction, one end of the connecting rod 310 is screwed into the threaded hole of the power tooth 221, and the other end is connected with the adjusting bolt 320; the adjusting bolt 320 can be moved relative to the bracket 100 and fixed on the bracket 100. The adjusting bolt 320 includes a screw rod 321, a head 322 and a nut 323, the screw rod 321 is fixedly connected with the head 322, and the nut 323 is screwed on the screw rod 321. A shoulder is provided on the outer peripheral surface of the screw rod 321, the end of the screw rod 321 away from the head 322 has a smaller diameter, and the end close to the head 322 has a larger diameter, the nut 323 is screwed on the end of the screw rod 321 away from the head 322, and the head 322 is connected to the connecting rod 310. The screw rod 321 has a larger diameter, which is larger than the width of the strip hole 110. Therefore, only the end of the screw rod 321 with a smaller diameter passes through the strip hole 110 and is connected to the nut 323, and the shoulder of the screw rod 321 abuts against the strip hole 110. The power tooth 221 is driven to move along the length direction of the strip hole 110 by manually pulling the adjustment bolt 320, and then the top tooth 420 is driven to lock the components passing through the end support 210. After the adjustment is completed, the locking nut 323 is tightened to fix the adjustment bolt 320 to the bracket 100.

[0050] It is conceivable that the above-mentioned adjusting bolt 320 is adjusted manually, and can be set to be electrically driven or pneumatically driven, or the adjusting bolt 320 can be directly replaced by a solenoid valve to drive the connecting rod 310 to move.

[0051] According to the electrical control cabinet of the second embodiment of the present invention, a plurality of components and the component limiting device of the above embodiment are installed in the cabinet. According to an electrical control cabinet of the embodiment of the present invention, there are at least the following technical effects: in the electrical control cabinet equipped with the limiting device, the inertial force generated by the components in the cabinet due to vibration impact can be directly transmitted to the main frame of the cabinet through the contact position with the limiting device, so that the components are evenly stressed, thereby avoiding the secondary impact caused by insufficient constraint under the impact test, and improving the fatigue strength of the front-end constraint of the component under vibration resistance conditions.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0053] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A component limiting device, characterized in that: include: Bracket (100); A locking mechanism (200) is mounted on one end of the bracket (100), comprising an end support (210) and an intermediate ring (220), wherein the end support (210) is connected to the end of the intermediate ring (220); the intermediate ring (220) is provided with a power tooth (221), the end support (210) is provided with a limiting structure (400), the power tooth (221) is transmission-connected to the limiting structure (400), and the limiting structure (400) is used for locking components; a tooth slot hole (222) is provided on the outer peripheral surface of the intermediate ring (220), and a cover plate (223) is connected to the tooth slot hole (222); the power tooth (221) is movably mounted in the tooth slot hole (222), and the cover plate (223) is pressed onto the power tooth (221); A tensioning mechanism is mounted on the bracket (100) and connected to the power tooth (221), the tensioning mechanism being used to pull the power tooth (221) and fix its position, thereby driving the limiting structure (400) to lock the component.

2. A component limiting device according to claim 1, characterized in that: A transition gear (500) is provided in the intermediate ring (220), and the power teeth (221) and the limiting structure (400) are connected via the transition gear (500).

3. A component limiting device according to claim 2, characterized in that: The transition gear (500) comprises an intermediate gear (510) and an end gear (520), the end gear (520) being connected to an end of the intermediate gear (510), the power tooth (221) being connected to the intermediate gear (510), and the limiting structure (400) being connected to the end gear (520).

4. A component limiting device according to claim 3, characterized in that: An embedding groove (522) is provided at one end of the end gear (520) facing the intermediate gear (510), and a positioning pin (511) matching the embedding groove (522) is provided at the end of the intermediate gear (510), and the positioning pin (511) is embedded in the embedding groove (522) to achieve the connection between the intermediate gear (510) and the end gear (520).

5. A component limiting device according to claim 4, characterized in that: The limiting structure (400) comprises a toggle gear (410) and a top tooth (420), wherein the toggle gear (410) and the top tooth (420) are detachably connected; the end support (210) is provided with an airfoil groove (211), the toggle gear (410) is meshed with the end gear (520), and the top tooth (420) is installed in the airfoil groove (211).

6. A component limiting device according to claim 5, characterized in that: An end of the end gear (520) facing the end support (210) is provided with an internal tooth groove (521), and the shifting gear (410) is installed in the internal tooth groove (521); the groove wall of the internal tooth groove (521) and the outer side wall of the shifting gear (410) are provided with gear teeth that mesh with each other.

7. A component limiting device according to claim 6, characterized in that: The limiting structure (400) further comprises an eccentric block (430), wherein the eccentric block (430) is installed between the shifting gear (410) and the top gear (420) and is used to support and limit the shifting gear (410).

8. The component limiting device according to claim 1, characterized in that: The tensioning mechanism (300) comprises a connecting rod (310) and an adjusting bolt (320), wherein the adjusting bolt (320) is connected to the power tooth (221) via the connecting rod (310); the bracket (100) is provided with a strip-shaped hole (110), and the adjusting bolt (320) is inserted into the strip-shaped hole (110); the adjusting bolt (320) can slide relative to the strip-shaped hole (110) and be fixed in position.

9. An electrical control cabinet, characterized in that: A plurality of components and a component limiting device as claimed in any one of claims 1 to 8 are installed in the cabinet.

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