Riveting clamp for riveting double-lug supporting plate self-locking nut

Abstract

A riveting clamp used for riveting a double-lug supporting plate self-locking nut comprises a riveting clamp rod and a riveting clamp head, the riveting clamp rod and the riveting clamp head are coaxially arranged, the riveting clamp rod is fixedly arranged at the top of the riveting clamp head, a round groove is formed in the bottom of the riveting clamp head, the groove and the riveting clamp head are coaxial, and the riveting clamp rod and the riveting clamp head are fixedly arranged on the riveting clamp head. A circular ring formed after the groove is formed in the bottom of the riveting clamping head is a working face. According to the double-lug supporting plate self-locking nut, the nut body of the double-lug supporting plate self-locking nut is protected, meanwhile, the riveting frequency is reduced, and the forming quality of a rivet pier head is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of riveting assembly, in particular to a riveting clip used for riveting double-ear support plate self-locking nuts. Background Art

[0002] In the current aerospace field such as aircraft assembly, a large number of fasteners with self-locking function need to be installed on the aircraft body structure. The commonly used fasteners are double-ear support plate self-locking nuts, and countersunk rivets are usually used to connect the body structure and the double-ear support plate self-locking nuts by riveting. Since the distance between the main part of the double-ear support plate self-locking nut and the rivet used for connection is very close, the operating space is very limited, which affects the riveting work of the double-ear support plate self-locking nut, increases the difficulty of the operator, and there will be problems such as indentation and tilt of the upsetting head.

[0003] At present, when installing the body structure and the double-ear support plate self-locking nut, the double-ear support plate self-locking nut is first positioned and tightened with a process bolt, and then the body structure and the two side support plates of the double-ear support plate self-locking nut are riveted twice in sequence by using a positive riveting method or a reverse riveting method. After the riveting is completed, the process bolt is loosened and removed from the double-ear support plate nut. However, due to the narrow space between the nut body and the rivet, the center of gravity of the working surface of the rivet clamp is often not on the same axis as the rivet rod, and the rivet clamp is offset at an angle, resulting in poor forming of the rivet head. In order to solve the design scheme of poor forming of the rivet head of the double-ear support plate self-locking nut after two riveting, the utility model proposes a rivet clamp for riveting the double-ear support plate self-locking nut. Utility Model Content

[0004] The utility model aims to provide a rivet clip for riveting double-ear support plate self-locking nuts, which protects the nut body of the double-ear support plate self-locking nuts, reduces the number of riveting times, and improves the forming quality of the rivet head.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A rivet clamp for riveting self-locking nuts with double-ear support plates comprises a rivet clamp rod and a rivet clamp head. The rivet clamp rod and the rivet clamp head are coaxially arranged, the rivet clamp rod is fixedly arranged on the top of the rivet clamp head, a circular groove is opened at the bottom of the rivet clamp head, the groove is coaxial with the rivet clamp head, and the circular ring formed after the groove is opened at the bottom of the rivet clamp head is a working surface.

[0007] As a preferred technical solution, a guiding slope is provided on the top of the riveting rod.

[0008] As a preferred technical solution, a silicone pad is fixedly provided on the side wall of the groove.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] 1. In the utility model, an avoidance groove is provided to avoid and protect the nut body of the double-ear support plate self-locking nut, thereby avoiding damage to the nut body.

[0011] 2. In the utility model, the working surface of the rivet clamp can cover two countersunk rivets, so that the two countersunk rivets can be riveted and formed at one time, and the forming quality of the rivet head is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings:

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the utility model;

[0016] Figure 4 This is a working position diagram of the rivet clamp and the double-ear support plate self-locking nut of the utility model;

[0017] The reference numerals are as follows:

[0018] Riveting rod 1, riveting head 2, groove 3, working surface 4. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0021] In the description of the present application, it should be noted that if terms such as "center", "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected" are used, they 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0022] Embodiment

[0023] As Figure 1-4 As shown, a riveting clamp for the riveting of a double-ear plate self-locking nut includes a riveting clamp rod 1 and a riveting clamp head 2. The riveting clamp rod 1 and the riveting clamp head 2 are coaxially arranged. The riveting clamp rod 1 is fixedly arranged at the top of the riveting clamp head 2. A circular groove 3 is opened at the bottom of the riveting clamp head 2. The groove 3 is coaxial with the riveting clamp head 2. The circular ring formed after the groove 3 is opened at the bottom of the riveting clamp head 2 is the working surface 4.

[0024] It is worth noting that the riveting clamp rod 1 is inserted into the installation groove of the riveting gun for installation. The riveting clamp and the double-ear plate self-locking nut are pressed against the body structure by the riveting clamp head 2. The nut body of the double-ear plate self-locking nut is avoided and protected by the opened groove 3. The working surface 4 at the bottom of the riveting clamp head 2 abuts against the countersunk head rivet rod on both sides of the double-ear plate self-locking nut during riveting.

[0025] Specifically, the radius of the groove is a, the radius of the nut body of the double-ear plate self-locking nut is b, the distance from the countersunk head rivet rod to the center of the nut body is c, and the radius of the working surface 4 is d. There is a > b, a < c, c < d, which ensures that the countersunk head rivet rod can be in full contact with the circular working surface 4, ensuring that there are no indentations on the upset head of the countersunk head rivet. Also, the depth of the groove 3 should ensure that it can completely avoid the process bolt screwed on the double-ear plate self-locking nut, so that when the riveting is completed, the top of the groove will not contact the process bolt either.

[0026] During riveting, the rivet clamp and the rivet gun are installed, and the double-ear support plate self-locking nut is pushed against the body structure through the rivet clamp to ensure that the groove 3 is coaxial with the nut body, and the countersunk rivets on both sides of the double-ear support plate self-locking nut are symmetrically distributed on the left and right sides of the rivet clamp. In this way, the rivet clamp head 2 will be subjected to the axial force of the rivet gun and the reaction force of the two rivets during riveting. Since the inner direction is along the axial direction of the rivet clamp, the rivet clamp will not deviate left and right, thereby ensuring the continuous and stable riveting and the normal forming of the countersunk rivet head.

[0027] In some feasible embodiments, a guiding slope is provided on the top of the rivet rod 1 to facilitate the rivet rod 1 to be easily inserted into the mounting slot of the rivet gun.

[0028] In some feasible embodiments, a silicone pad is fixedly provided on the side wall of the groove 3 to protect the nut body.

[0029] When in use, use positive riveting to perform riveting. After installing the rivet card into the rivet gun, press the double-ear support plate self-locking nut against the body structure. The shank of the countersunk rivet passes through the body structure and the hole on the double-ear support plate self-locking nut to contact the working surface 4. The head of the countersunk rivet is supported by a push iron, and then the rivet gun is started to complete the riveting.

[0030] In addition, it should be understood that although this specification is described in accordance with the implementation methods, not every implementation method contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art. So far, each embodiment of the present disclosure has been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here. The scope of the present disclosure is defined by the attached claims.

Claims

1. A rivet clip for riveting double-ear support plate self-locking nuts, characterized in that: The invention comprises a rivet clamp rod (1) and a rivet clamp head (2), wherein the rivet clamp rod (1) and the rivet clamp head (2) are coaxially arranged, the rivet clamp rod (1) is fixedly arranged on the top of the rivet clamp head (2), a circular groove (3) is provided at the bottom of the rivet clamp head (2), the groove (3) and the rivet clamp head (2) are coaxial, and the circular ring formed after the groove (3) is provided at the bottom of the rivet clamp head (2) is a working surface (4).

2. A rivet clamp for riveting double-ear support plate self-locking nuts according to claim 1, characterized in that: The top of the riveting rod (1) is provided with a guiding inclined surface.

3. The rivet clamp for riveting double-ear support plate self-locking nuts according to claim 1, characterized in that: A silicone pad is fixedly provided on the side wall of the groove (3).

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