Shaft head nut locking device
By using spherical grooves and locking inserts in the shaft head nut locking device, the problem of intimate and low efficiency of nut locking is solved, and the tight connection and anti-loosening effect under single operation is achieved, which improves product competitiveness and work efficiency.
Patent Information
- Application Number
- CN202422235260.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-12
AI Technical Summary
In the prior art, the nut on the shaft is not tightly locked, easy to loosen, and requires two people to operate, which is inefficient.
A shaft head nut locking device is designed, including a shaft head locking mechanism, a shaft head nut, a shaft head locking nut fixing sleeve and a retaining ring. By setting a spherical groove between the shaft and the locking nut fixing sleeve, a tight connection is achieved by inserting the locking insert into the groove, and the fixing effect is improved with the locking plate and the arc groove.
The tight connection between the nut and the shaft under a single operation is achieved, preventing loosening, improving locking efficiency and reducing labor costs.
Smart Images
Figure CN223049201U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of shaft head locking, in particular to a shaft head nut locking device. Background Art
[0002] In the transmission device of agricultural machinery, various parts on the shaft, such as gears, retaining rings, etc., need to be fixed with nuts. Specifically, the nuts are fixed with locking glue, or the nut locking grooves are flattened to prevent the nuts from loosening. After the nuts are installed and flattened, the edges of the grooves on the shaft are prone to be sharp, causing the edges of the nut to tear and break. In response to this situation, a new solution has been designed in which a spherical groove is dug on the shaft head. After the nut is installed, the thin edge of the nut is tapped to lock it. However, this solution generally uses a screwdriver or pliers to tap the flat nut to lock it. It is easy for the nut edge to not fit tightly with the spherical groove, resulting in an unsatisfactory locking effect. In addition, in order to prevent the shaft from rotating during the locking process, two people are required to operate to lock it, which is inefficient. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a shaft head nut locking device to solve the above-mentioned problem.
[0004] The technical solution of the utility model for solving the above technical problems is as follows: a shaft head nut locking device, comprising: a shaft head locking mechanism, a shaft head nut, a shaft head locking nut fixing sleeve and a retaining ring; the retaining ring is sleeved on the shaft, the shaft head nut is sleeved on the shaft and abuts against the retaining ring, the shaft head locking nut fixing sleeve is adapted to be sleeved on the shaft head nut and abuts against the retaining ring, a spherical groove adapted to the end of the shaft head locking mechanism is provided between the outer wall of the shaft and the inner wall of the shaft head locking nut fixing sleeve, the end of the shaft head locking mechanism is detachably inserted in the spherical groove, so that the shaft head nut is fixedly connected to the outer wall of the shaft.
[0005] The beneficial effects of the utility model are as follows: the end of the shaft head locking mechanism is adapted to be inserted into the spherical groove, and the shaft head nut is tightly fixedly connected to the outer wall of the shaft, which not only makes the shaft head nut and the shaft fit more closely, the nut locking effect is better, and the nut is less likely to fall off, thereby playing the effect of preventing loosening and falling off, improving the competitiveness of the product, but also facilitates the locking process of the nut on the shaft by a single person, reduces labor costs, and improves work efficiency.
[0006] On the basis of the above technical solution, the present invention can also be improved as follows.
[0007] Furthermore, a fixing sleeve locking groove is provided on the inner wall of the fixing sleeve of the shaft head locking nut, and the fixing sleeve locking groove is an arc-shaped groove. The fixing sleeve locking groove is provided at one end of the shaft head nut away from the retaining ring.
[0008] The beneficial effect of adopting the above further solution is that the locking groove of the fixing sleeve cooperates with the shaft locking groove on the outer wall of the shaft to form a spherical groove adapted to the locking insert, thereby tightly fixing the shaft head nut to the outer wall of the shaft.
[0009] Furthermore, a shaft locking groove is provided on the outer wall of the shaft, and the shaft locking groove is an arc-shaped groove. The shaft locking groove is provided at an end of the shaft head nut away from the retaining ring.
[0010] The beneficial effect of adopting the above further scheme is that the shaft locking groove cooperates with the fixing sleeve locking groove on the inner wall of the shaft head locking nut fixing sleeve to form a spherical groove adapted to the locking insert, thereby tightly fixing the shaft head nut to the outer wall of the shaft.
[0011] Furthermore, the fixing sleeve locking groove and the shaft locking groove correspond to each other inside and outside, forming the spherical groove adapted to the end of the shaft head locking mechanism.
[0012] The beneficial effect of adopting the above further scheme is that the fixing sleeve locking groove and the shaft locking groove form a spherical groove that is compatible with the end of the shaft head locking mechanism, that is, the locking insert, which is conducive to tightly fixing the shaft head nut to the outer wall of the shaft when the locking insert is inserted into the spherical groove.
[0013] Furthermore, the shaft head locking mechanism comprises: a connecting rod, a locking insert and a force block, and two ends of the connecting rod are respectively connected to the locking insert and the force block.
[0014] The beneficial effect of adopting the above further scheme is that the force block is conducive to transmitting the externally applied force to the locking head through the connecting rod, so that the locking head is inserted into the spherical groove. At the same time, the axial force can be manually applied by holding the connecting rod to insert the locking head into the spherical groove.
[0015] Furthermore, the locking insert is a spherical structure adapted to the spherical groove, and the locking insert is detachably inserted into the spherical groove.
[0016] The beneficial effect of adopting the above further solution is that when the locking insert is inserted into the spherical groove, it is conducive to tightly fixing the shaft head nut and the shaft locking groove on the outer wall of the shaft, thereby improving the locking effect of the nut.
[0017] Furthermore, a locking plate is provided at the end of the shaft head nut away from the retaining ring, and the locking plate is an annular structure.
[0018] The beneficial effect of adopting the above further solution is that the locking piece is conducive to being tightly fixedly connected with the shaft locking groove on the outer wall of the shaft when the locking insert is inserted into the spherical groove, thereby improving the locking effect of the nut.
[0019] Furthermore, the locking piece can be bent and arranged in the spherical groove.
[0020] The beneficial effect of adopting the above further solution is that the locking piece can be bent, which is conducive to bending towards the shaft locking groove under the pressure of the locking insert, and then tightly and fixedly connected with the shaft locking groove.
[0021] Furthermore, when the locking insert is inserted into the spherical groove, the outer wall of the locking insert abuts against the locking sheet, so that the locking sheet is adapted and pressed into the shaft locking groove.
[0022] The beneficial effect of adopting the above further solution is that the locking piece is adapted and pressed into the shaft locking groove, which is beneficial to improving the locking effect of the nut and makes the nut not easy to fall off the shaft.
[0023] Furthermore, the outer wall of the shaft head nut is a polygonal structure, and the inner wall of the shaft head locking nut fixing sleeve is a polygonal structure that is compatible with the outer wall of the shaft head nut.
[0024] The beneficial effect of adopting the above further scheme is that the polygonal structure is conducive to increasing the friction between the shaft head nut and the shaft head locking nut fixing sleeve when the shaft head locking nut fixing sleeve is set on the shaft head nut, thereby preventing the shaft head nut and the shaft head locking nut fixing sleeve from loosening. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 A schematic diagram of the structure of the overall structure before locking provided by an embodiment of the utility model;
[0026] Figure 2 This is a schematic diagram of the structure after the overall structure provided by an embodiment of the utility model is locked.
[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0028] 1. Shaft head locking mechanism; 2. Shaft head nut; 3. Shaft head locking nut fixing sleeve; 4. Retaining ring; 5. Shaft; 11. Connecting rod; 12. Locking insert; 13. Force block; 21. Locking plate; 31. Fixing sleeve locking groove; 51. Shaft locking groove. DETAILED DESCRIPTION
[0029] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.
[0030] like Figure 1 and Figure 2As shown in the figure, a locking device for an axle head nut includes: an axle head locking mechanism 1, an axle head nut 2, a fixing sleeve 3 for the axle head locking nut, and a retaining ring 4; the retaining ring 4 is sleeved on the axle 5, the axle head nut 2 is sleeved on the axle 5 and abuts against the retaining ring 4, the fixing sleeve 3 for the axle head locking nut is adaptively sleeved on the axle head nut 2 and abuts against the retaining ring 4, a spherical groove adapted to the end of the axle head locking mechanism 1 is provided between the outer wall of the axle 5 and the inner wall of the fixing sleeve 3 for the axle head locking nut, and the end of the axle head locking mechanism 1 is detachably inserted into the spherical groove, so that the axle head nut 2 is fixedly connected to the outer wall of the axle 5.
[0031] Among them, it should be noted that: in the technical solution of the present invention, steps are wound around the side wall of the axle 5, and the end of the retaining ring 4 abuts against the steps, so as to provide support during the locking process.
[0032] The beneficial effects of the present invention are as follows: the end of the axle head locking mechanism is adaptively inserted into the spherical groove, and the axle head nut is tightly fixedly connected to the outer wall of the axle, which not only makes the fit between the axle head nut and the axle closer, the nut locking effect better, and the nut less likely to fall off, achieving the effects of anti-loosening and anti-dropping, improving the competitiveness of the product, but also facilitating the single-person operation of locking the nut on the axle, reducing the labor cost and improving the work efficiency.
[0033] Preferably, as Figure 1 and Figure 2 shown, a fixing sleeve locking groove 31 is provided on the inner wall of the fixing sleeve 3 for the axle head locking nut, the fixing sleeve locking groove 31 is an arc-shaped groove, and the fixing sleeve locking groove 31 is provided at one end of the axle head nut 2 away from the retaining ring 4.
[0034] The beneficial effect of adopting the above preferred scheme is that the fixing sleeve locking groove cooperates with the axle locking groove on the outer wall of the axle to facilitate the formation of a spherical groove adapted to the locking insert, so as to tightly fixedly connect the axle head nut to the outer wall of the axle.
[0035] Preferably, as Figure 1 and Figure 2 shown, an axle locking groove 51 is provided on the outer wall of the axle 5, the axle locking groove 51 is an arc-shaped groove, and the axle locking groove 51 is provided at one end of the axle head nut 2 away from the retaining ring 4.
[0036] The beneficial effect of adopting the above preferred scheme is that the axle locking groove cooperates with the fixing sleeve locking groove on the inner wall of the fixing sleeve for the axle head locking nut to facilitate the formation of a spherical groove adapted to the locking insert, so as to tightly fixedly connect the axle head nut to the outer wall of the axle.
[0037] Preferably, as Figure 1 and Figure 2As shown, the fixing sleeve locking groove 31 and the shaft locking groove 51 correspond to each other inside and outside, forming the spherical groove adapted to the end of the shaft head locking mechanism 1.
[0038] The beneficial effect of adopting the above preferred solution is that the fixing sleeve locking groove and the shaft locking groove form the spherical groove adapted to the end of the shaft head locking mechanism, that is, the locking insert, which is beneficial to tightly fix and connect the shaft head nut and the outer wall of the shaft when the locking insert is inserted into the spherical groove.
[0039] Preferably, as Figure 1 and Figure 2 shown, the shaft head locking mechanism 1 includes: a connecting rod 11, a locking insert 12 and a force-bearing block 13, and both ends of the connecting rod 11 are respectively connected to the locking insert 12 and the force-bearing block 13.
[0040] The beneficial effect of adopting the above preferred solution is that the force-bearing block is beneficial to transmit the externally applied force to the locking insert through the connecting rod, so that the locking insert is inserted into the spherical groove. At the same time, the axial force can also be manually applied by holding the connecting rod to insert the locking insert into the spherical groove.
[0041] Preferably, as Figure 1 and Figure 2 shown, the locking insert 12 is a spherical structure adapted to the spherical groove, and the locking insert 12 is detachably inserted into the spherical groove.
[0042] The beneficial effect of adopting the above preferred solution is that when the locking insert is inserted into the spherical groove, it is beneficial to tightly fix and connect the shaft head nut and the shaft locking groove on the outer wall of the shaft, thereby improving the nut locking effect.
[0043] Preferably, as Figure 1 and Figure 2 shown, a locking piece 21 is arranged at the end of the shaft head nut 2 away from the retaining ring 4, and the locking piece 21 is an annular structure.
[0044] The beneficial effect of adopting the above preferred solution is that the locking piece is beneficial to tightly fix and connect with the shaft locking groove on the outer wall of the shaft when the locking insert is inserted into the spherical groove, thereby improving the nut locking effect.
[0045] Preferably, as Figure 1 and Figure 2 shown, the locking piece 21 is bendably arranged in the spherical groove.
[0046] The beneficial effect of adopting the above preferred solution is that the bendability of the locking piece is beneficial to bend towards the shaft locking groove under the pressure of the locking insert, and then tightly fix and connect with the shaft locking groove.
[0047] Preferably, as Figure 2As shown, when the locking insert 12 is inserted into the spherical groove, the outer wall of the locking insert 12 abuts against the locking piece 21, and the locking piece 21 is adaptively pressed into the shaft locking groove 51.
[0048] The beneficial effect of adopting the above preferred solution is that the locking piece is adaptively pressed into the shaft locking groove, which is beneficial to improving the locking effect of the nut and making it not easy for the nut to fall off the shaft.
[0049] Preferably, the outer wall of the shaft head nut 2 is of a polygonal structure, and the inner wall of the shaft head locking nut fixing sleeve 3 is of a polygonal structure adapted to the outer wall of the shaft head nut 2.
[0050] The beneficial effect of adopting the above preferred solution is that the polygonal structure is beneficial to improving the friction between the shaft head nut and the shaft head locking nut fixing sleeve when the shaft head locking nut fixing sleeve is sleeved on the shaft head nut, and preventing loosening between the shaft head nut and the shaft head locking nut fixing sleeve.
[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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 should not be construed as a limitation to the present invention.
[0052] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.
[0053] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; 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 internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0054] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.
[0055] In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do 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. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0056] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.
Claims
1. A shaft head nut locking device, characterized in that: include: A shaft head locking mechanism (1), a shaft head nut (2), a shaft head locking nut fixing sleeve (3) and a retaining ring (4); the retaining ring (4) is sleeved on the shaft (5), the shaft head nut (2) is sleeved on the shaft (5) and abuts against the retaining ring (4), the shaft head locking nut fixing sleeve (3) is adaptively mounted on the shaft head nut (2) and abuts against the retaining ring (4), a spherical groove adapted to the end of the shaft head locking mechanism (1) is provided between the outer wall of the shaft (5) and the inner wall of the shaft head locking nut fixing sleeve (3), and the end of the shaft head locking mechanism (1) is detachably inserted into the spherical groove, so that the shaft head nut (2) is fixedly connected to the outer wall of the shaft (5).
2. A shaft head nut locking device according to claim 1, characterized in that: A fixing sleeve locking groove (31) is provided on the inner wall of the shaft head locking nut fixing sleeve (3), and the fixing sleeve locking groove (31) is an arc-shaped groove. The fixing sleeve locking groove (31) is provided at one end of the shaft head nut (2) away from the retaining ring (4).
3. A shaft head nut locking device according to claim 2, characterized in that: The outer wall of the shaft (5) is provided with a shaft locking groove (51), the shaft locking groove (51) is an arc-shaped groove, and the shaft locking groove (51) is arranged at one end of the shaft head nut (2) away from the retaining ring (4).
4. A shaft head nut locking device according to claim 3, characterized in that: The fixing sleeve locking groove (31) and the shaft locking groove (51) correspond to each other inside and outside, forming the spherical groove adapted to the end of the shaft head locking mechanism (1).
5. A shaft head nut locking device according to claim 4, characterized in that: The shaft head locking mechanism (1) comprises: a connecting rod (11), a locking insert (12) and a force block (13); two ends of the connecting rod (11) are respectively connected to the locking insert (12) and the force block (13).
6. A shaft head nut locking device according to claim 5, characterized in that: The locking insert (12) is a spherical structure adapted to the spherical groove, and the locking insert (12) is detachably inserted in the spherical groove.
7. A shaft head nut locking device according to claim 5, characterized in that: A locking plate (21) is provided at the end of the shaft head nut (2) away from the retaining ring (4), and the locking plate (21) is an annular structure.
8. A shaft head nut locking device according to claim 7, characterized in that: The locking piece (21) is disposed in the spherical groove in a bendable manner.
9. The shaft head nut locking device according to claim 7, characterized in that: When the locking insert (12) is inserted into the spherical groove, the outer wall of the locking insert (12) abuts against the locking piece (21), so that the locking piece (21) is adapted and pressed into the shaft locking groove (51).
10. The shaft head nut locking device according to claim 1, characterized in that: The outer wall of the shaft head nut (2) is a polygonal structure, and the inner wall of the shaft head locking nut fixing sleeve (3) is a polygonal structure that matches the outer wall of the shaft head nut (2).