Anti-loosening nut

Abstract

The utility model provides an anti-loosening nut which comprises a nut body, an inner threaded hole is formed in the nut body, at least two penetrating holes are formed in the nut body, the at least two penetrating holes penetrate through the nut body respectively, and the at least two penetrating holes are formed in a spaced mode. The number of the fixing assemblies is at least two, and the fixing assemblies penetrate through the penetrating holes through the inner threaded holes, so that one ends of the fixing assemblies are located in the inner threaded holes, and the other ends of the fixing assemblies are located on the outer side of the nut body. According to the anti-loosening nut, the technical problem that in the prior art, a nut is prone to loosening in the environment with the large vibration amplitude and the heavy load is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mining nuts, in particular to an anti-loosening nut. Background Art

[0002] A nut is a part that is screwed together with a bolt or a screw for fastening. It plays a vital role in fixing connections in mechanical components such as reducers, crushing shaft assemblies, and sprocket shaft assemblies.

[0003] Round nuts are usually prevented from loosening by using fine pitch threads to enhance the anti-loosening ability and reduce and weaken the stress on the shaft (that is, the bolt or screw). In the process of mechanical design and manufacturing, round nuts and retaining washers are usually used. During the actual workshop assembly, the inner tongue of the washer must be inserted into the groove on the shaft, and locked with special tools such as hook wrenches. Finally, the outer tongue of the washer is embedded into the groove of the round nut using tools such as flat shovels, and the nut is locked. However, in the actual use of mining reducers, crushing shaft groups, sprocket shaft groups, etc., due to complex working conditions, large vibrations, heavy loads and other factors, the retaining pads are squeezed and deformed during the use of round nuts, causing the anti-rotation sheet to break and the anti-loosening failure, and the axial position is lost, which causes the related series parts to move, causing damage to the equipment bearings and seals, and in severe cases, causing the coal mining face to stop production.

[0004] Therefore, the prior art needs to be further developed. Utility Model Content

[0005] The purpose of the utility model is to overcome the above technical deficiencies and provide a nut that prevents loosening, so as to solve the technical problem in the related art that the nut is easy to loosen in an environment with large vibration amplitude and heavy load.

[0006] In order to achieve the above technical objectives, the utility model adopts the following technical solutions: a nut that prevents loosening is provided, including: a nut body, the nut body is provided with an internal threaded hole, at least two through holes are provided on the nut body, at least two through holes are respectively provided through the nut body, and at least two through holes are provided at intervals; a fixing component, at least two fixing components are provided, and the fixing components pass through the through holes through the internal threaded hole so that one end of the fixing component is located in the internal threaded hole and the other end of the fixing component is located on the outside of the nut body.

[0007] Furthermore, the fixing assembly includes a fixing head and a fixing rod, the fixing head is connected to the fixing rod, the fixing head is located in the internal threaded hole, and the fixing rod passes through the through hole.

[0008] Furthermore, a groove is provided on the nut body, the groove is provided in one-to-one correspondence with the through hole, the groove is provided in the internal threaded hole, and the fixing head is located in the groove.

[0009] Furthermore, the groove includes a first concave surface abutting against the fixed head, a second concave surface abutting against the fixed head and a third concave surface abutting against the fixed head, and a through hole is arranged on the second concave surface; the fixed head includes a first contact surface, a second contact surface and a third contact surface located in the groove, and the fixing rod is fixed on the second contact surface; when the fixing assembly passes through the through hole, the first contact surface abuts against the first concave surface, the second contact surface abuts against the second concave surface, and the third contact surface abuts against the third concave surface.

[0010] Further, the plane where the first concave surface is located is parallel to the plane where the third concave surface is located.

[0011] Furthermore, an arcuate surface is also provided on the fixing head, and the arcuate surface is arranged opposite to the second contact surface. When the fixing head is located in the groove, the curved surface where the arcuate surface is located is located on the circumference of the internal threaded hole.

[0012] Furthermore, there are four grooves, which are symmetrically arranged around the nut body.

[0013] Furthermore, the nut body is provided with a plurality of slots, each of which is arranged on the outside of the nut body and is symmetrically arranged around the nut body.

[0014] Furthermore, the anti-loosening nut also includes a stop washer, the body of the stop washer is fitted on the nut body, and the stop washer includes an inner tongue, which is bent into the internal threaded hole.

[0015] Furthermore, the stop washer also includes an outer tongue, which is arranged at intervals from the inner tongue. There are multiple outer tongues, and individual outer tongues are bent and clamped in the clamping groove.

[0016] Beneficial effects:

[0017] 1. The anti-loosening nut of the utility model passes through the fixing assembly from the inside of the threaded hole to the outside of the body, and connects the fixing rod of the fixing assembly with the outer component to prevent the nut from loosening due to large external vibration amplitude or heavy load, and strengthen the stability of the connection between the nut body and the external component.

[0018] 2. A groove is provided in the nut body of the utility model, the fixing head is embedded in the groove, and the arc surface of the fixing head coincides with the circumference of the threaded hole, so that the fixing assembly is more closely connected to the nut body, ensuring a seamless connection between the two and improving stability.

[0019] 3. A stop washer is connected between the nut body and other components of the utility model. The stop washer cooperates with the fixing assembly to further prevent the nut from rotating, thereby making the nut and other components more firmly connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a schematic structural diagram of the anti-loosening nut used in the embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the fixing assembly used in the embodiment of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the nut body adopted in the first embodiment of the utility model;

[0023] Figure 4 It is a structural schematic diagram of a nut body adopted in the second embodiment of the utility model;

[0024] Figure 5 It is a schematic diagram of the structure of the stop washer used in the embodiment of the utility model.

[0025] The above drawings include the following reference numerals:

[0026] 1. Nut body; 11. Internal threaded hole; 12. Through hole; 13. Groove; 131. First concave surface; 132. Second concave surface; 133. Third concave surface; 14. Slot; 2. Fixing assembly; 21. Fixing head; 211. First contact surface; 212. Second contact surface; 213. Third contact surface; 214. Arc surface; 22. Fixing rod; 3. Stop washer; 31. Inner tongue; 32. Outer tongue. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0028] According to an embodiment of the utility model, a nut is provided to prevent loosening. Figures 1 to 5, including: a nut body 1, the nut body 1 is provided with an internal threaded hole 11, and at least two through holes 12 are provided on the nut body 1, at least two through holes 12 are respectively set through the nut body 1, and at least two through holes 12 are arranged at intervals; a fixing assembly 2, at least two fixing assemblies 2, the fixing assemblies 2 are arranged through the internal threaded hole 11 and the through holes 12, so that one end of the fixing assembly 2 is located in the internal threaded hole 11, and the other end of the fixing assembly 2 is located outside the nut body 1. The nut body 1 is provided with an internal threaded hole 11, and the shafts of the crushing shaft group and the sprocket shaft group pass through the internal threaded hole 11 to realize the connection between the nut body 1 and the shaft. The fixing assembly 2 passes through the through holes 12 from the inside of the internal threaded hole 11 to the outside of the nut body 1, and the part protruding from the outside of the nut body 1 is connected to other parts of the crushing shaft group and the sprocket shaft group, so that the nut body 1 is firmly connected to the crushing shaft group and the sprocket shaft group. The fixing assembly 2 firmly connects the nut body 1 with the mechanical parts from the inside, and even if the mechanical parts such as the crushing shaft group and the sprocket shaft group have a large vibration amplitude or a heavy load, the nut body 1 will not loosen. The anti-loosening nut of this embodiment solves the technical problem in the related art that the nut is easily loosened under an environment with large vibration amplitude and heavy load.

[0029] See also Figure 2 In the anti-loosening nut of this embodiment, the fixing component 2 includes a fixing head 21 and a fixing rod 22 , the fixing head 21 is connected to the fixing rod 22 , the fixing head 21 is located in the internal threaded hole 11 , and the fixing rod 22 passes through the through hole 12 .

[0030] See also Figure 1 , Figure 2 and Figure 3 In the anti-loosening nut of this embodiment, a groove 13 is further provided on the nut body 1, and the groove 13 is provided in a one-to-one correspondence with the through hole 12, and the groove 13 is provided in the internal threaded hole 11, and the fixing head 21 is located in the groove 13. The groove 13 provides an accommodating space for the fixing head 21.

[0031] See also Figure 1In the anti-loosening nut of this embodiment, the groove 13 includes a first concave surface 131 abutting against the fixing head 21, a second concave surface 132 abutting against the fixing head 21, and a third concave surface 133 abutting against the fixing head 21, and the through hole 12 is arranged on the second concave surface 132; the fixing head 21 includes a first contact surface 211, a second contact surface 212 and a third contact surface 213 located in the groove 13, and the fixing rod 22 is fixed on the second contact surface 212; when the fixing assembly 2 passes through the through hole 12, the first contact surface 211 abuts against the first concave surface 131, the second contact surface 212 abuts against the second concave surface 132, and the third contact surface 213 abuts against the third concave surface 133. The groove 13 fits tightly with the fixing head 21 to prevent the fixing assembly 2 from shaking relative to the nut body 1 when the machine such as the crushing shaft group and the sprocket shaft group vibrates, and each side of the fixing head 21 fits with the corresponding side of the groove 13, so that the two are integrated and the firmness of the connection is improved.

[0032] See also Figure 1 In the anti-loosening nut of this embodiment, the plane where the first concave surface 131 is located is parallel to the plane where the third concave surface 133 is located.

[0033] See also Figure 1 and Figure 2 In the anti-loosening nut of this embodiment, the fixing head 21 is further provided with an arc surface 214, which is arranged opposite to the second contact surface 212. When the fixing head 21 is located in the groove 13, the curved surface where the arc surface 214 is located is located on the circumference of the internal threaded hole 11. In other words, the arc surface 214 falls on the circumference of the internal threaded hole 11, so that the fixing component 2 and the nut body 1 are closely fitted and integrated into a whole, which is mechanically connected with the crushing shaft group and the sprocket shaft group on the outside.

[0034] See also Figure 4 In the anti-loosening nut of this embodiment, there are four grooves 13, which are symmetrically arranged around the nut body 1. There are four grooves 13, and the fixing assembly 2 has four grooves 13. The grooves 13 are symmetrically distributed on the nut body 1, ensuring that the forces between the various components are balanced when the shaft rotates, ensuring stable operation.

[0035] See also Figure 3 and Figure 4 In the anti-loosening nut of this embodiment, a plurality of slots 14 are provided on the nut body 1, each slot 14 is provided on the outside of the nut body 1, and each slot 14 is symmetrically provided around the nut body 1. A slot is provided on the inside of the nut body 1, and mechanical components such as a crushing shaft group and a sprocket shaft group are clamped in the slot of the nut body 1, so as to further strengthen the connection between the nut and mechanical components such as the crushing shaft group and the sprocket shaft group.

[0036] See also Figure 5In the anti-loosening nut of this embodiment, a stop washer 3 is also provided, the body of the stop washer 3 is attached to the nut body 1, and the stop washer 3 includes an inner tongue 31, and the inner tongue 31 is bent into the internal threaded hole 11. The nut body 1 is connected with the stop washer 3, and the inner tongue 31 of the washer is inserted into the internal threaded hole 11 to strengthen the connection between the nut body 1 and the shaft and prevent the nut from rotating.

[0037] See also Figure 5 In the anti-loosening nut of this embodiment, the locking washer 3 also includes an outer tongue 32, which is arranged at intervals from the inner tongue 31. There are multiple outer tongues 32, and individual outer tongues 32 are bent and clamped in the clamping groove 14. One or more of the outer tongues 32 are locked using a special tool such as a hook wrench, and then the outer tongue of the washer is inserted into the clamping groove 14 of the round nut using a flat shovel or other tools, and the nut is locked, thereby further improving the firmness of the nut connection on the reducer, crushing shaft group, and sprocket shaft group, and effectively preventing the nut from loosening.

[0038] The anti-loosening nut of the present embodiment has the advantages of uniform load-bearing, no permanent damage, easy installation and disassembly, simple and easy operation, good applicability, etc., and can be well adapted to the use environment with vibration and complex working conditions. It has a double-layer anti-loosening effect through the stop washer 3 and the anti-loosening structure. The fixing component 2 is used inside the nut body 1, and a continuous strong friction force is generated by the fixing component 2 to prevent the round nut from rotating, so that it is locked and prevent the round nut from loosening.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0040] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0041] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0042] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0043] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A nut that prevents loosening, characterized in that: include: A nut body (1), wherein the nut body (1) is provided with an internal threaded hole (11), and at least two through holes (12) are provided on the nut body (1), wherein the at least two through holes (12) are respectively provided through the nut body (1), and the at least two through holes (12) are provided at intervals; A fixing component (2), wherein there are at least two fixing components (2), and the fixing component (2) is arranged through the internal threaded hole (11) and through the through hole (12), so that one end of the fixing component (2) is located in the internal threaded hole (11) and the other end of the fixing component (2) is located outside the nut body (1).

2. The anti-loosening nut according to claim 1, characterized in that: The fixing assembly (2) comprises a fixing head (21) and a fixing rod (22), wherein the fixing head (21) is connected to the fixing rod (22), the fixing head (21) is located in the internal threaded hole (11), and the fixing rod (22) passes through the through hole (12).

3. The anti-loosening nut according to claim 2, characterized in that: The nut body (1) is also provided with a groove (13), the groove (13) being arranged in one-to-one correspondence with the through hole (12), the groove (13) being arranged in the internal threaded hole (11), and the fixing head (21) being located in the groove (13).

4. The anti-loosening nut according to claim 3, characterized in that: The groove (13) comprises a first concave surface (131) abutting against the fixing head (21), a second concave surface (132) abutting against the fixing head (21), and a third concave surface (133) abutting against the fixing head (21), and the through hole (12) is arranged on the second concave surface (132); The fixing head (21) comprises a first contact surface (211), a second contact surface (212) and a third contact surface (213) located in the groove (13); the fixing rod (22) is fixed on the second contact surface (212); When the fixing component (2) passes through the through hole (12), the first contact surface (211) abuts against the first concave surface (131), the second contact surface (212) abuts against the second concave surface (132), and the third contact surface (213) abuts against the third concave surface (133).

5. The anti-loosening nut according to claim 4, characterized in that: The plane on which the first concave surface (131) is located is parallel to the plane on which the third concave surface (133) is located.

6. The anti-loosening nut according to claim 5, characterized in that: The fixing head (21) is also provided with an arcuate surface (214), the arcuate surface (214) being arranged opposite to the second contact surface (212), and when the fixing head (21) is located in the groove (13), the curved surface on which the arcuate surface (214) is located is located on the circumference of the internal threaded hole (11).

7. The anti-loosening nut according to claim 3, characterized in that: There are four grooves (13), and the four grooves (13) are symmetrically arranged around the nut body (1).

8. The anti-loosening nut according to claim 1, characterized in that: The nut body (1) is also provided with a plurality of slots (14), each of which is arranged on the outside of the nut body (1), and each of which is symmetrically arranged around the nut body (1).

9. The anti-loosening nut according to claim 8, characterized in that: The anti-loosening nut also includes a stop washer (3), the body of the stop washer (3) is fitted on the nut body (1), and the stop washer (3) includes an inner tongue (31), and the inner tongue (31) is bent into the internal threaded hole (11).

10. The anti-loosening nut according to claim 9, characterized in that: The stop washer (3) further comprises an outer tongue (32), the outer tongue (32) being arranged at intervals from the inner tongue (31), and there are a plurality of outer tongues (32), each of which is bent and then snapped into the snap groove (14).

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