Anti-loosening structure and connecting assembly

Abstract

The anti-loosening structure comprises an anti-loosening plate, a first clamping groove is formed in the anti-loosening plate, the first clamping groove communicates with a through hole, used for being matched with a bolt, of a first connected piece, and a second clamping groove communicating with the through hole is formed in the first connected piece; the opening direction of the first clamping groove is consistent with the opening direction of the second clamping groove. One of the bolt head and the nut located in the narrow space is limited through the first clamping groove, and a worker rotates the other one of the bolt head and the nut located outside the narrow space. The first clamping groove and the bolt head or the nut are detachably matched with the first clamping groove, so that the bolt head or the nut can be detached from the first clamping groove, compared with a nut welding mode in the prior art, independent repair of the bolt head or the nut is achieved, the whole connected piece connected with the nut does not need to be detached, and the cost is reduced. The maintenance difficulty and the maintenance cost are reduced, and meanwhile, the maintenance time is shortened.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical connection, and in particular to an anti-loosening structure and a connection assembly. Background Art

[0002] Threaded connection is a widely used detachable fixed connection method, which refers to a detachable connection in which the connected parts are connected together by threaded parts (or the threaded part of the connected parts). Threaded parts include bolts, studs, screws and set screws. Threaded connection includes bolt connection, stud bolt connection, screw connection and set screw connection, and bolt connection is the most commonly used. Bolt connection is further divided into bolt and nut connection and bolt and threaded hole connection. Bolt and nut connection is suitable for through holes, and bolt and threaded hole connection is suitable for blind holes.

[0003] Bolt connections have the advantages of simple structure, reliable connection and easy disassembly, but they also have the problem of being easy to loosen.

[0004] When bolts are used to connect in narrow spaces, the nut 03 is usually welded to prevent loosening. Specifically, the nut 03 is connected to the connected part by welding so that the nut 03 and the connected part form a whole. Figure 1 As shown in the figure, the first connected member 01 is located above the second connected member 02. Through holes for the bolt 04 to pass through are provided on the first connected member 01 and the second connected member 02. The ends of the bolt 04 pass through the through holes of the first connected member 01 and the second connected member 02 in sequence and extend into the space below the second connected member 02. The lower end of the second connected member 02 is used to realize the narrow space for the bolt 04 to cooperate with the nut 03. Before the first connected member 01 and the second connected member 02 are connected, the nut 03 is first welded to the bottom of the second connected member 02, and then the bolt 04 is tightened onto the nut 03 to realize the connection between the first connected member 01 and the second connected member 02.

[0005] Although the use of welding nuts can prevent the bolts from loosening, if the nut is damaged, the welded nut welded to the connected part cannot be repaired alone, and the entire connected part connected to the nut needs to be removed, resulting in high maintenance costs and long maintenance time.

[0006] Therefore, how to solve the problem of maintenance cost and maintenance time caused by welding the nut and the connected part into an integral structure has become a technical problem that needs to be solved urgently by technical personnel in this field. Utility Model Content

[0007] The present application proposes an anti-loosening structure to solve the problem of maintenance cost and maintenance time caused by welding the nut and the connected member into an integral structure. The present application also provides a connection assembly.

[0008] In order to achieve the above-mentioned purpose, the present application provides an anti-loosening structure, including an anti-loosening plate,

[0009] The anti-loosening plate can be installed in a narrow space of the connected parts.

[0010] The anti-loosening plate is provided with a first clamping groove for clamping a bolt head or a nut of a bolt, the first clamping groove is communicated with a through hole of the connected member for cooperating with the bolt, and the opening direction of the first clamping groove is perpendicular to the axial direction of the bolt head or the nut.

[0011] The connected member is provided with a second slot communicating with the through hole, and an opening direction of the second slot is consistent with an opening direction of the first slot.

[0012] Preferably, in the above-mentioned anti-loosening structure, the first slot has two side slot walls arranged along the opening direction of the first slot and a bottom slot wall connected to the two side slot walls, and the distance between the two side slot walls is greater than the distance between the opposite sides of the outer hexagon of the bolt head or the nut and is smaller than the outer diameter of the bolt head.

[0013] Preferably, in the above anti-loosening structure, the notches of the first clamping slot and / or the second clamping slot are provided with rounded corners.

[0014] Preferably, in the above anti-loosening structure, the anti-loosening plate is fixedly connected to the connected member.

[0015] Preferably, the above anti-loosening structure further includes a reinforcing member for enhancing the strength of the anti-loosening plate, wherein the reinforcing member is connected to the anti-loosening plate and is arranged on the lower surface and / or upper surface of the anti-loosening plate.

[0016] Preferably, in the above anti-loosening structure, the reinforcement member is arranged along a direction parallel to the opening direction of the first card slot or the reinforcement member is arranged along a direction perpendicular to the opening direction of the first card slot.

[0017] Preferably, in the above anti-loosening structure, the angle between the plane where the reinforcement is located and the plane where the anti-loosening plate is located is 0°-90°.

[0018] Preferably, in the above anti-loosening structure, the anti-loosening plate is fixedly connected to the reinforcement member.

[0019] And / or, the reinforcing member is fixedly connected to the connected member.

[0020] A connection assembly comprises a bolt, a nut and an anti-loosening structure, wherein the anti-loosening structure acts on the bolt head of the bolt or the nut.

[0021] The anti-loosening structure is any of the anti-loosening structures described above.

[0022] Preferably, in the above connection assembly, the bolt is a hexagonal flange bolt, and the flange of the hexagonal anti-loosening bolt is located between the anti-loosening plate of the anti-loosening structure and the connected member.

[0023] The distance between the anti-loosening plate and the connected member is at least equal to the thickness of the flange of the bolt.

[0024] The anti-loosening structure provided in the embodiment of the present application limits one of the bolt head and the nut located in the narrow space through the first slot of the anti-loosening plate, and the staff rotates the other of the bolt head and the nut located outside the narrow space to prevent loosening. This solution enables the bolt head or the nut to be removed from the first slot through the detachable cooperation between the first slot and the bolt head or the nut and the first slot. Compared with the method of welding nuts in the prior art, the bolt head or the nut can be repaired separately without removing the entire connected part connected to the nut, thereby reducing the difficulty and cost of maintenance and shortening the maintenance time.

[0025] The present application also discloses a connection assembly, including a bolt, a nut and an anti-loosening structure, for achieving connection between a first connected member and a second connected member, wherein the anti-loosening structure is the anti-loosening structure described in any of the above schemes. Since the anti-loosening structure has the above technical effects, the connection assembly having the anti-loosening structure also has the same technical effects, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without creative work, and the present application can also be applied to other similar scenarios based on the provided drawings. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0027] Figure 1 It is a structural schematic diagram of a first connected member and a second connected member connected by threads in the prior art;

[0028] Figure 2 It is a structural schematic diagram of the connection between the anti-loosening structure of the present application and the connected member;

[0029] Figure 3 It is a structural schematic diagram of the connection between the connecting component of the present application and the connected component;

[0030] Figure 4 yes Figure 3A partial enlarged view of middle A;

[0031] Figure 5 yes Figure 3 The main view of A in the figure.

[0032] in:

[0033] 01-first connected part; 02-second connected part; 03-nut; 04-bolt;

[0034] 1-anti-loosening plate; 11-first slot; 2-second slot; 3-reinforcement member; 4-bolt; 5-nut; 6-first connected member; 7-second connected member. DETAILED DESCRIPTION

[0035] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It will be understood that the specific embodiments described herein are only used to explain the related application, rather than to limit the application. The described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0036] It should be noted that, for the convenience of description, only the parts related to the relevant application are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0037] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0038] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0039] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0040] See also Figure 2-Figure 5 .

[0041] The bolt 4 is used to connect two connected parts. For the convenience of subsequent description, the connected part with a small space is named as the first connected part 6, and the other connected part is named as the second connected part 7. The anti-loosening structure disclosed in the present application is preferably applicable to the embodiment in which only one connected part has a small space. Figure 2 The structure shown in the figure is that the first connected member 6 is located below the second connected member 7, but the application scope of the anti-loosening structure disclosed in the present application is not limited to Figure 2 The embodiment shown.

[0042] Some embodiments of the present application disclose an anti-loosening structure, including an anti-loosening plate 1 , which can be installed in a narrow space of a first connected component 6 .

[0043] The anti-loosening plate 1 is provided with a first slot 11 which is connected to the first connected member 6 for communicating with a through hole for cooperating with the bolt 4. The first connected member 6 is provided with a second slot 2 which is connected to the through hole. The opening direction of the first slot 11 is consistent with the opening direction of the second slot 2.

[0044] The first clamping groove 11 can be used to clamp the bolt head of the bolt 4, and can also be used to clamp the nut 5. Specifically, in the embodiment in which the first clamping groove 11 is used to clamp the bolt head of the bolt 4, the bolt head of the bolt 4 is located at the bottom, and the bolt 4 is installed into the anti-loosening plate 1 and the first connected member 6 through the openings of the first clamping groove 11 and the second clamping groove 2, and the bolt head is located in the first clamping groove 11; in the embodiment in which the first clamping groove 11 is used to clamp the nut 5, the bolt head of the bolt 4 is located at the top, and the nut 5 is located in the first clamping groove 11, and the bolt 4 passes through the second connected member 7 and the first connected member 6 in sequence to cooperate with the nut 5.

[0045] In an embodiment where the first clamping groove 11 is used to clamp the bolt head of the bolt 4 , the bolt head is limited by the first clamping groove 11 so that during the tightening process of the nut 5 , the bolt 4 does not rotate synchronously with the nut 5 , thereby ensuring a tight fit between the nut 5 and the bolt 4 .

[0046] In the embodiment where the first clamping groove 11 is used to clamp the nut 5 , the nut 5 is limited by the first clamping groove 11 so that during the tightening process of the bolt 4 , the nut 5 does not rotate synchronously with the bolt 4 , thereby ensuring a tight fit between the bolt 4 and the nut 5 .

[0047] The first slot 11 prevents one of the nut 5 or the bolt head from rotating, and the other of the nut 5 or the bolt head is located above the second connected member, making it convenient for the staff to tighten the nut 5 or the bolt head, and the operation is convenient.

[0048] Preferably, the plane where the first slot 11 of the anti-loosening plate 1 is located is perpendicular to the axis of the through hole of the first connected member 6, so that the plane where the anti-loosening plate 1 is located is as parallel as possible to the lower surface of the first connected member 6, reducing the difficulty of matching the bolt 4 and the nut 5.

[0049] The anti-loosening structure disclosed in the present application limits the bolt head or nut 5 located in a narrow space through the first clamping groove 11 of the anti-loosening plate 1, and the staff tightens the bolt head or nut 5 located outside the narrow space to prevent loosening. The first clamping groove 11 is detachably matched with the bolt head or nut 5, so that the bolt head or nut 5 can be removed from the first clamping groove 11. Compared with the method of welding the nut 5 in the prior art, the bolt head or nut 5 can be repaired separately without removing the entire connected part connected to the nut 5, thereby reducing the difficulty and cost of maintenance and shortening the maintenance time.

[0050] When the bolt head of the bolt 4 is clamped by the first clamping groove 11, the damaged nut 5 can be directly screwed off the bolt 4 and replaced with a new nut 5; when the nut 5 is clamped by the first clamping groove 11, the bolt 4 is first rotated to separate the bolt 4 from the nut 5, and then the nut 5 is removed from the first clamping groove 11 and replaced with a new nut 5. No matter which method is used, compared with the method in the prior art that requires the entire connected part to be dismantled to replace the nut 5, the maintenance cost is reduced and the maintenance time is shortened.

[0051] The opening direction of the first slot 11 is perpendicular to the axis of the bolt head. In some embodiments of the present application, the first slot 11 has two side slot walls arranged along the opening direction of the first slot 11 and a bottom slot wall connected to the two side slot walls. The side slot walls extend from the slot opening to the bottom slot wall. The extending direction of the side slot walls is perpendicular to the axis of the bolt head. The distance between the two side walls is the width of the first slot 11. The bottom slot wall can be an arc-shaped slot wall or a V-shaped slot wall that matches the shape of the outer wall of the bolt head or nut.

[0052] Bolt 4 is a hexagonal bolt, and the bolt head of the hexagonal bolt has six prismatic surfaces, of which the two prismatic surfaces opposite to each other on the bolt head are the outer hexagonal opposite sides of the hexagonal bolt, the diameter of the outer circle where the six prismatic surfaces are located is the outer circle diameter of the bolt head, and the distance between the outer hexagonal opposite sides is smaller than the outer circle diameter.

[0053] Nut 5 is a hexagonal nut having six prismatic faces, wherein two prismatic faces opposite to each other are the outer hexagonal opposite sides of the hexagonal nut, the diameter of the outer circle where the six prismatic faces are located is the outer circle diameter of the nut, and the distance between the outer hexagonal opposite sides is smaller than the outer circle diameter.

[0054] In order to ensure the clamping effect of the first clamping groove 11 on the bolt head or the nut 5, the width of the first clamping groove 11 in the present application is greater than the distance between the opposite sides of the outer hexagon and less than the outer diameter. Taking the clamping of the bolt head by the first clamping groove 11 as an example, during use, the bolt head of the bolt 4 will not rotate around its own axis due to the clamping effect of the first clamping groove 11. When the nut 5 outside the narrow space is loosened, the first connected part and the second connected part can be locked by tightening the nut 5 again; at the same time, in the process of tightening the nut 5, due to the locking of the bolt head by the first clamping groove 11, the bolt 4 will not rotate with the nut 5 during the tightening of the nut 5, ensuring the locking effect of the first connected part and the second connected part.

[0055] Preferably, the depth of the first groove is at least equal to the outer diameter of the bolt head or the nut.

[0056] Preferably, the width of the first clamping groove 11 is closer to the distance between opposite sides of the outer hexagon, so as to better clamp the bolt head or the nut 5 .

[0057] In some embodiments of the present application, the anti-loosening structure includes an anti-loosening plate 1 and a reinforcing member 3, and the reinforcing member 3 is used to enhance the strength of the anti-loosening plate 1 to extend the service life of the anti-loosening plate 1.

[0058] The reinforcing member 3 may be connected only to the anti-loosening plate 1 , or may be connected to the first connected member 6 and the anti-loosening plate at the same time.

[0059] In the embodiment in which the reinforcement 3 is connected to both the anti-loosening plate 1 and the first connected member 6, the end of the reinforcement 3 connected to the first connected member 6 is perpendicular to the end of the reinforcement 3 connected to the anti-loosening plate 1, and the reinforcement 3 is used to apply an upward force to the end of the anti-loosening plate 1 away from the first connected member 6.

[0060] The reinforcement member 3 may be arranged only on the upper surface of the anti-loosening plate 1, or only on the lower surface of the anti-loosening plate 1, or simultaneously on the upper and lower surfaces of the anti-loosening plate 1. Figure 4 and 5 As shown, it is an embodiment in which the reinforcement member 3 is arranged on the lower surface of the anti-loosening plate 1.

[0061] The reinforcement 3 may be Figure 2-Figure 4 As shown in the figure, the reinforcing member 3 is arranged along the opening direction of the first slot 11, or the reinforcing member 3 can also be arranged along the opening direction perpendicular to the first slot 11 (not shown in the figure). Figure 2As shown, in some embodiments of the present application, the reinforcement member 3 is located on the lower surface of the anti-loosening plate 1 , and the reinforcement member 3 is connected to the anti-loosening plate 1 and is arranged along the opening direction of the first slot 11 .

[0062] When the reinforcing member 3 is arranged along an opening direction parallel to the first clamping groove 11 , preferably, the reinforcing member 3 is connected to both the first connected member 6 and the anti-loosening plate 1 .

[0063] Preferably, the reinforcing plate is connected to the edge of the anti-loosening plate 1 to increase the operating space around the anti-loosening plate 1. Furthermore, the reinforcing plate and the anti-loosening plate 1 form a U-shaped structure or an H-shaped structure.

[0064] When the reinforcing member 3 and the anti-loosening plate 1 are made of the same material, preferably, the reinforcing member 3 and the anti-loosening plate 1 are connected by welding.

[0065] The reinforcement member 3 may be a reinforcement plate, a reinforcement rod, or other forms. The specific form is selected by those skilled in the art according to actual needs.

[0066] In the embodiment where the reinforcement member 3 is a reinforcement plate, whether the reinforcement member 3 is arranged along the opening direction of the first notch or along the opening direction perpendicular to the first slot 11, the angle between the plane where the reinforcement member 3 is located and the plane where the anti-loosening plate 1 is located is 0°-90°.

[0067] The angle between the plane where the reinforcing plate is located and the plane where the anti-loosening plate 1 is located is 0°-90°, and the reinforcing plate can support the anti-loosening plate 1 in a direction perpendicular to the plane where the anti-loosening plate 1 is located.

[0068] When the angle between the plane where the reinforcing plate is located and the plane where the anti-loosening plate 1 is located is 0°, the reinforcing member 3 is parallel to the anti-loosening plate 1, and the reinforcing member 3 supports the anti-loosening plate 1 in the direction parallel to the plane where the anti-loosening plate 1 is located, but the supporting force in the direction perpendicular to the plane where the anti-loosening plate 1 is located will be weakened; the reinforcing member 3 is perpendicular to the anti-loosening plate 1, and the reinforcing member 3 supports the anti-loosening plate 1 in the direction perpendicular to the plane where the anti-loosening plate 1 is located, but the supporting area in the direction parallel to the plane where the anti-loosening plate 1 is located will be relatively reduced. The angle between the plane where the reinforcing plate is located and the plane where the anti-loosening plate 1 is located is selected by those skilled in the art according to actual needs.

[0069] The reinforcing plate may be a rectangular plate, a triangular plate, a trapezoidal plate, or a plate of other shapes.

[0070] Preferably, the reinforcing members 3 are symmetrically distributed on both sides of the opening direction of the first slot 11 to symmetrically support the anti-loosening plate 1 and enhance the strength of the anti-loosening plate 1 to the greatest extent.

[0071] The anti-loosening plate 1 and the reinforcement member 3 can be fixedly connected or detachably connected.

[0072] When the anti-loosening plate 1 and the reinforcement member 3 are fixedly connected, the anti-loosening plate 1 and the reinforcement member 3 are welded together, or the anti-loosening plate 1 and the reinforcement member 3 are riveted together, or the anti-loosening plate 1 and the reinforcement member 3 are integrally formed.

[0073] When the anti-loosening plate 1 and the reinforcement member 3 are detachably connected, the anti-loosening plate 1 and the reinforcement member 3 can be connected by bolts 4 or by plug-in connection.

[0074] In the embodiment in which the anti-loosening plate 1 and the reinforcement 3 are connected by bolts 4, a through hole is provided at the position where the anti-loosening plate 1 and the reinforcement 3 are connected, and a threaded hole connected to the through hole is provided on the reinforcement 3. The bolt 4 passes through the through hole of the anti-loosening plate 1 and cooperates with the threaded hole of the reinforcement 3 to realize the bolt 4 connection between the anti-loosening plate 1 and the reinforcement 3.

[0075] In the embodiment of the plug-in connection between the anti-loosening plate 1 and the reinforcement member 3, a slot is provided on the anti-loosening plate 1, and a plug-in plate corresponding to the position of the slot is provided on the reinforcement member 3. The plug-in plate of the reinforcement member 3 cooperates with the slot of the anti-loosening plate 1 to realize the plug-in connection between the anti-loosening plate 1 and the reinforcement member 3. The slot and the plug-in plate can be interference fit.

[0076] The connection form between the anti-loosening plate 1 and the reinforcement member 3 is not limited to the above embodiment, and may also be other connection forms, which are not specifically limited here.

[0077] The anti-loosening plate 1 and the first connected member 6 can be fixedly connected or detachably connected.

[0078] In the embodiment in which the anti-loosening plate 1 is fixedly connected to the first connected member 6 , the anti-loosening plate 1 is connected to the first connected member 6 by welding.

[0079] In the embodiment in which the anti-loosening plate 1 and the first connected member 6 are detachably connected, the anti-loosening plate 1 and the first connected member 6 are connected by screws. Specifically, a threaded hole is provided on the anti-loosening plate 1, and a through hole is provided on the first connected member 6. The bolt 4 passes through the through hole of the first connected member 6 and is threadedly connected to the threaded hole of the anti-loosening plate 1, so as to realize the bolt 4 connection between the anti-loosening plate 1 and the first connected member 6.

[0080] The connection form between the anti-loosening plate 1 and the first connected member 6 is not limited to the above embodiment, and may also be other connection forms, which are not specifically limited here.

[0081] The connection mode between the reinforcing member 3 and the first connected member 6 may be the same as the connection mode between the anti-loosening plate 1 and the first connected member 6 , or may be different from the connection mode between the anti-loosening plate 1 and the first connected member 6 .

[0082] The thickness of the anti-loosening plate 1 and the reinforcing member 3 may be the same or different.

[0083] In the embodiment where the thicknesses of the anti-loosening plate 1 and the reinforcing member 3 are different, the thickness of the anti-loosening plate 1 is greater than the thickness of the reinforcing member 3 .

[0084] In this solution, rounded corners are provided at the notches of the first slot 11 and / or the second slot 2. The rounded corner design increases the size of the opening ends of the first slot 11 and the second slot 2, reduces the difficulty of installing the bolt 4 on the anti-loosening plate 1 and the first connected member 6, and prevents bumps on the hands of the staff.

[0085] The present application also discloses a connection assembly, including a bolt 4, a nut 5 and an anti-loosening structure, for realizing the connection between a first connected member 6 and a second connected member 7, wherein the anti-loosening structure is the anti-loosening structure recorded in any of the above schemes.

[0086] Since the anti-loosening structure has the above-mentioned technical effects, the connecting assembly having the anti-loosening structure also has the same technical effects, which will not be described in detail here.

[0087] In some embodiments of the present application, the bolt 4 is a hexagonal flange bolt.

[0088] The bolt 4 is not limited to a hexagonal flange bolt, and may be a hexagonal bolt without a flange.

[0089] In the embodiment where the bolt is a hexagonal flange bolt, the flange of the hexagonal flange bolt is located between the anti-loosening plate 1 of the anti-loosening structure and the first connected member 6, and the distance between the anti-loosening plate 1 and the first connected member 6 is at least equal to the thickness of the flange. The thickness of the flange is the dimension of the flange along the axial direction of the bolt 4.

[0090] Since the width of the first slot 11 is smaller than the outer diameter of the hexagonal flange bolt, correspondingly, the width of the first slot 11 must be smaller than the diameter of the flange, and the anti-loosening plate 1 can support the bolt 4.

[0091] Under the supporting effect of the anti-loosening plate 1, when the hexagonal flange bolt becomes loose, the flange of the hexagonal flange bolt is always stuck between the anti-loosening plate 1 and the first connected part due to the supporting and limiting effect of the anti-loosening plate 1, and the hexagonal flange bolt will not fall from the anti-loosening plate 1 into the first connected part 6; at the same time, under the supporting effect of the anti-loosening plate 1, there is no need for manual support, and the end of the bolt 4 can always be exposed from the second connected part 7, which is convenient for the installation of the nut 5.

[0092] The reinforcing member 3 and the first connected member 6 can be made of the same material or different materials. Similarly, the reinforcing member 3 and the anti-loosening plate 1 can be made of the same material or different materials.

[0093] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used, and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. The scope of application involved in the present application is not limited to the technical solution formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned application concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in this application (but not limited to) to form a technical solution.

Claims

1. An anti-loosening structure, characterized in that: comprising a locking plate (1), The anti-loosening plate (1) can be installed in a narrow space of a connected component. The anti-loosening plate (1) is provided with a first clamping groove (11) for clamping a bolt head of a bolt (4) or a nut (5); the first clamping groove (11) is communicated with a through hole of the connected member for cooperating with the bolt (4); the opening direction of the first clamping groove (11) is perpendicular to the axial direction of the bolt head or the nut (5); The connected component is provided with a second slot (2) communicating with the through hole, and the opening direction of the second slot (2) is consistent with the opening direction of the first slot (11).

2. The anti-loosening structure according to claim 1, characterized in that: The first slot (11) comprises two side slot walls arranged along the opening direction of the first slot (11) and a bottom slot wall connected to the two side slot walls, wherein the distance between the two side slot walls is greater than the distance between opposite sides of the outer hexagon of the bolt head or the nut (5) and is smaller than the outer diameter of the bolt head.

3. The anti-loosening structure according to claim 1, characterized in that: The notches of the first card slot (11) and / or the second card slot (2) are provided with rounded corners.

4. The anti-loosening structure according to claim 1, characterized in that: The anti-loosening plate (1) is fixedly connected to the connected component.

5. The anti-loosening structure according to claim 1, characterized in that: It also comprises a reinforcing member (3) for enhancing the strength of the anti-loosening plate (1); the reinforcing member (3) is connected to the anti-loosening plate (1); the reinforcing member (3) is arranged on the lower surface and / or the upper surface of the anti-loosening plate (1).

6. The anti-loosening structure according to claim 5, characterized in that: The reinforcing member (3) is arranged along a direction parallel to the opening of the first card slot (11), or the reinforcing member (3) is arranged along a direction perpendicular to the opening of the first card slot (11).

7. The anti-loosening structure according to claim 5, characterized in that: The angle between the plane where the reinforcing member (3) is located and the plane where the anti-loosening plate (1) is located is 0°-90°.

8. The anti-loosening structure according to claim 5, characterized in that: The anti-loosening plate (1) is fixedly connected to the reinforcing member (3). And / or, the reinforcing member (3) is fixedly connected to the connected member.

9. A connection assembly, characterized in that: The invention comprises a bolt (4), a nut (5) and an anti-loosening structure, wherein the anti-loosening structure acts on the bolt head of the bolt (4) or the nut (5). The anti-loosening structure is the anti-loosening structure according to any one of claims 1 to 8.

10. The connection assembly according to claim 9, characterized in that The bolt (4) is a hexagonal flange bolt, the flange of which is located between the anti-loosening plate (1) of the anti-loosening structure and the connected part. The distance between the anti-loosening plate (1) and the connected component is at least equal to the thickness of the flange of the bolt (4).

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