Anti-loosening fastening assembly and coupler hub

Abstract

The utility model discloses an anti-loosening fastening assembly and a coupler hub. The anti-loosening fixing assembly comprises a first connecting piece, a second connecting piece and a third connecting piece, the first connecting piece comprises a first hub connecting part and a first anti-loosening fixing connecting part connected with the first hub connecting part, and the first anti-loosening fixing connecting part is provided with a first anti-loosening protrusion; one end of the second connecting piece is recessed towards the other end of the second connecting piece to form a groove, and a plurality of first anti-loosening grooves are formed in the groove; wherein the second connecting piece is mounted in a mounting groove of the coupler hub, and the bottom of the second connecting piece is arranged at the bottom of the mounting groove; the first connecting piece is used for being installed in an installation groove of a coupler hub, the first anti-loosening fixed connecting part of the first connecting piece penetrates into the groove, and one first anti-loosening protrusion is inserted into one first anti-loosening groove. According to the anti-loosening device, expansion fit between the anti-loosening grooves is achieved in the anti-loosening groove matching mode, and therefore the good anti-loosening effect can be achieved.

Description

Technical Field

[0001] The present application relates to the technical field of couplings, and in particular to an anti-loosening and tightening assembly and a coupling hub. Background Art

[0002] Couplings are mechanical components used to connect two shafts (driving and driven) in different mechanisms, enabling them to rotate together and transmit torque. In high-speed, heavy-load power transmission, couplings are subject to vibration, overload, and other impacts. Some couplings are used in applications such as smooth shafts and splines. In these cases, relative displacement between the coupling hub and shaft is not permitted. Set screws are typically added to the outer diameter of the hub to prevent this. However, conventional set screws have limited anti-loosening capabilities. During equipment installation, assemblers apply a certain torque to create a preload in the set screws to prevent loosening. However, over time, due to factors such as equipment vibration, these set screws can easily loosen and fail, leading to relative displacement between the hub and shaft.

[0003] Therefore, it is desired to have a technical solution to overcome or at least alleviate at least one of the above-mentioned deficiencies of the prior art. Summary of the Invention

[0004] The purpose of the present application is to provide an anti-loosening and tightening assembly to overcome or at least alleviate at least one of the above-mentioned defects of the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides an anti-loosening and tightening assembly, which includes:

[0006] a first connecting member, the first connecting member comprising a first hub connecting portion and a first anti-loosening and tightening connecting portion connected to the first hub connecting portion, wherein a plurality of first anti-loosening protrusions are provided on an outer surface of the first anti-loosening and tightening connecting portion;

[0007] A second connecting member, wherein one end of the second connecting member is recessed toward the other end to form a groove, wherein a plurality of first anti-loosening grooves are provided in the groove;

[0008] The second connecting member is used to be installed in the installation groove of the coupling hub, and the bottom of the second connecting member is arranged at the bottom of the installation groove;

[0009] The first connecting member is used to be installed in the installation groove of the coupling hub, the first anti-loosening fastening connection portion of the first connecting member is inserted into the groove, and one of the first anti-loosening protrusions is inserted into one of the first anti-loosening grooves.

[0010] Optionally, the portion of the first anti-loosening and tightening connection portion extending into the groove gradually decreases in diameter from an end away from the bottom of the groove to an end contacting the bottom of the groove.

[0011] Optionally, an external thread is provided on the outer wall of the first hub connecting portion, and the external thread of the outer wall of the first hub connecting portion is used for threaded connection with the internal thread in the installation groove.

[0012] Optionally, an external thread is provided on the outer wall of the second connecting member, and the external thread of the outer wall of the second connecting member is used for threaded connection with the internal thread in the installation groove.

[0013] Optionally, the distance between the two ends of the first hub connection portion is greater than the distance between the two ends of the first anti-loosening and tightening connection portion.

[0014] Optionally, a hexagonal groove hole is provided at one end of the first hub connecting portion away from the first anti-loosening and tightening connecting portion.

[0015] Optionally, a hexagonal groove hole is provided at the bottom of the groove.

[0016] The present application also provides a coupling hub, wherein the coupling hub is provided with a mounting groove, and the anti-loosening and tightening assembly as described above is provided in the mounting groove.

[0017] The anti-loosening and tightening assembly of the present application is composed of a first connecting member and a second connecting member using this split structure to cooperate with each other, and the first connecting member and the second connecting member are expanded and tightened by cooperating with each other through the anti-loosening groove, thereby achieving a good anti-loosening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of an anti-loosening and tightening assembly according to an embodiment of the present application.

[0019] Figure 2 yes Figure 1 Another overall structural schematic diagram of the anti-loosening and tightening assembly is shown.

[0020] Figure 3 yes Figure 1 The structural schematic diagram of the first connecting member is shown.

[0021] Figure 4 yes Figure 1 The structural schematic diagram of the second connecting member is shown.

[0022] Reference numerals

[0023] DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the implementation of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below in conjunction with the drawings in the embodiments of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of this application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain this application, and should not be understood as limitations on this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The embodiments of this application are described in detail below in conjunction with the drawings.

[0025] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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. Therefore, it should not be understood as limiting the scope of protection of this application.

[0026] Figure 1 It is a schematic diagram of the overall structure of an anti-loosening and tightening assembly according to an embodiment of the present application.

[0027] Figure 2 yes Figure 1 Another overall structural schematic diagram of the anti-loosening and tightening assembly is shown.

[0028] Figure 3 yes Figure 1 The structural schematic diagram of the first connecting member is shown.

[0029] Figure 4 yes Figure 1 The structural schematic diagram of the second connecting member is shown.

[0030] like Figures 1 to 4 The anti-loosening and tightening assembly shown includes a first connecting member 1 and a second connecting member 2. The first connecting member includes a first hub connecting portion 11 and a first anti-loosening and tightening connecting portion 12 connected to the first hub connecting portion 11. A plurality of first anti-loosening protrusions 121 are provided on the outer surface of the first anti-loosening and tightening connecting portion 12.

[0031] One end of the second connecting member 2 is recessed toward the other end to form a groove 21, wherein a plurality of first anti-loosening grooves are provided in the groove 21;

[0032] The second connecting member 2 is used to be installed in the installation groove of the coupling hub, and the bottom of the second connecting member is arranged at the bottom of the installation groove;

[0033] The first connecting member is used to be installed in the installation groove of the coupling hub, the first anti-loosening and tightening connection part 12 of the first connecting member is deep into the groove 21, one of the first anti-loosening protrusions is inserted into one of the first anti-loosening grooves, and the first hub connection part of the first connecting member is at least partially located outside the installation groove.

[0034] The anti-loosening and tightening assembly of the present application is composed of a first connecting member and a second connecting member using this split structure to cooperate with each other, and the first connecting member and the second connecting member are expanded and tightened by cooperating with each other through the anti-loosening groove, thereby achieving a good anti-loosening effect.

[0035] See also Figure 1 In this embodiment, the portion of the first anti-loosening and tightening connection portion 12 that extends into the groove gradually decreases in diameter from one end away from the bottom of the groove to one end in contact with the bottom of the groove.

[0036] In this way, when the first anti-loosening and tightening connection portion 12 extends into the groove, a better expansion fit can be formed due to the compression between the surfaces.

[0037] In this embodiment, an external thread is provided on the outer wall of the first hub connecting portion, and the external thread of the outer wall of the first hub connecting portion is used to be threadedly connected to the internal thread in the installation groove.

[0038] In this embodiment, an external thread is provided on the outer wall of the second connecting member, and the external thread of the outer wall of the second connecting member is used to be threadedly connected to the internal thread in the installation groove.

[0039] In this embodiment, the distance between the two ends of the first hub connecting portion is greater than the distance between the two ends of the first anti-loosening and tightening connecting portion.

[0040] This arrangement ensures that the left and right portions of the first connecting member and the second connecting member are relatively long.

[0041] In this embodiment, a hexagonal groove hole is provided at one end of the first hub connecting portion away from the first anti-loosening and tightening connecting portion.

[0042] In this embodiment, a hexagonal groove hole is provided at the bottom of the groove.

[0043] See also Figures 1 to 4During use, first screw the second connector into the bottom of the threaded hole on the wheel hub using an Allen wrench and apply a certain amount of torque to generate a certain preload. Then, screw the first connector into the threaded hole on the wheel hub using an Allen wrench and apply a certain amount of torque to cause the first connector to deform through the lower tapered shaft and the upper tapered hole of the second connector, causing the anti-loosening set screw to deform axially, thereby achieving a better clamping effect with the wheel hub threaded hole. At the same time, anti-loosening grooves are arranged on the mating surfaces of the tapered shaft and the tapered hole, increasing the friction between the two. This achieves a multiple anti-loosening effect, making the connection between the anti-loosening set screw and the wheel hub threaded hole more secure and the coupling safer and more reliable.

[0044] The present application also provides a coupling hub, wherein the coupling hub is provided with a mounting groove, and the anti-loosening and tightening assembly as described above is provided in the mounting groove.

[0045] In this embodiment, the wheel hub is mounted on the outside of the shaft, and the anti-loosening and tightening assembly of the present application is installed on the rear end of the wheel hub (the rear end of the wheel hub needs to be processed with a threaded hole that matches the anti-loosening and tightening assembly).

[0046] Although the present application is disclosed as above with reference to preferred embodiments, it is not intended to limit the present application. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application shall be based on the scope defined by the claims of the present application.

[0047] Finally, it should be pointed out that the above embodiments are intended only to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they may modify the technical solutions described in the above embodiments or replace some of the technical features therein with equivalents; and such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An anti-loosening and tightening component, characterized in that: The anti-loosening and tightening assembly comprises: A first connecting member (1), comprising a first hub connecting portion (11) and a first anti-loosening and tightening connecting portion (12) connected to the first hub connecting portion (11), wherein a plurality of first anti-loosening protrusions (121) are provided on an outer surface of the first anti-loosening and tightening connecting portion (12); A second connecting member (2), one end of the second connecting member (2) is recessed toward the other end to form a groove (21), and a plurality of first anti-loosening grooves are provided in the groove (21); wherein, The second connecting member (2) is used to be installed in the installation groove of the coupling hub, and the bottom of the second connecting member is arranged at the bottom of the installation groove; The first connecting member is used to be installed in the installation groove of the coupling hub (3), the first anti-loosening fastening connection portion (12) of the first connecting member is deeply inserted into the groove (21), and one of the first anti-loosening protrusions is inserted into one of the first anti-loosening grooves.

2. The anti-loosening and tightening assembly according to claim 1, characterized in that: The portion of the first anti-loosening and tightening connection portion (12) extending into the groove has a diameter gradually reduced in a direction from an end away from the bottom of the groove to an end contacting the bottom of the groove.

3. The anti-loosening and tightening assembly according to claim 2, characterized in that: An external thread is provided on the outer wall of the first hub connecting portion, and the external thread of the outer wall of the first hub connecting portion is used for threaded connection with the internal thread in the installation groove.

4. The anti-loosening and tightening assembly according to claim 3, characterized in that: An external thread is provided on the outer wall of the second connecting member, and the external thread of the outer wall of the second connecting member is used for threaded connection with the internal thread in the installation groove.

5. The anti-loosening and tightening assembly according to claim 4, characterized in that: The distance between the two ends of the first hub connection portion is greater than the distance between the two ends of the first anti-loosening and tightening connection portion.

6. The anti-loosening and tightening assembly according to claim 5, characterized in that: A hexagonal groove hole is provided at one end of the first hub connecting portion away from the first anti-loosening and tightening connecting portion.

7. The anti-loosening and tightening assembly according to claim 6, characterized in that: A hexagonal groove hole is provided at the bottom of the groove.

8. A coupling hub, characterized in that: The coupling hub is provided with a mounting groove, and the anti-loosening and tightening assembly according to any one of claims 1 to 6 is provided in the mounting groove.

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