Axle with locking structure

Abstract

The utility model belongs to the technical field of axles, and particularly relates to an axle with a locking structure, which comprises an axle frame, an axle main body penetrates through the inner wall of the axle frame, one end of the axle main body is fixedly connected with a connecting screw rod, a key groove is arranged on the outer wall of the connecting screw rod, an axle head is embedded on the outer wall of the key groove, and the locking structure is arranged on the axle head. A first nut in threaded connection with the outer wall of the connecting screw is attached to the outer wall of the shaft head, a first gasket in sliding connection with the outer wall of the key groove is attached to the outer wall of the first nut, and a second gasket in sliding connection with the outer wall of the key groove is embedded into the outer wall of the first gasket. The second nut rotates to lock the first nut through embedding of the first gasket and the second gasket, then the inner clamping block of the clamping spring is embedded into the key groove, the outer clamping block of the clamping spring is embedded into the clamping groove in the outer wall of the second nut, relative rotation of the second nut is avoided, and locking operation on the shaft head is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of axle technology, and in particular relates to an axle with a locking structure. Background Technology

[0002] The axle ends refer to the two ends of the axle. The axle is a part that supports rotation. The axle and the axle ends rotate together to transmit motion, torque or bending moment. The axle ends are usually used to install bearings, and their function is to support the operation of the equipment on the axle.

[0003] For example, patent CN209875771U discloses an axle head with a novel axle head locking structure. The axle includes an axle tube and an axle head. A keyway is provided on the outer ring of the axle head's end. A locking washer and an axle head nut are sequentially arranged on the axle head from the axle tube towards the keyway. The locking washer has several threaded holes with matching screws screwed in. A locking washer protrusion is provided on the inner ring of the locking washer. This invention is rigorously and rationally designed; the locking washer protrusion, in conjunction with the screws, effectively prevents the axle head nut from rotating. Furthermore, this structure is robust, reliable, and not easily damaged.

[0004] Existing axles with locking mechanisms suffer from a tendency for the nut to shift slightly under prolonged vibration, leading to axle head wobbling. Therefore, we propose an axle with a locking mechanism. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned technical problems by providing an axle with a locking structure, thereby preventing the nut from shifting by a small length under prolonged vibration.

[0006] In view of this, the present invention provides an axle with a locking structure, including an axle frame, an axle body penetrating the inner wall of the axle frame, a connecting screw fixedly connected to one end of the axle body, a keyway formed on the outer wall of the connecting screw, a shaft head fitted into the outer wall of the keyway, a first nut threadedly connected to the outer wall of the connecting screw and fitted to the outer wall of the shaft head, a first washer slidably connected to the outer wall of the keyway and fitted to the outer wall of the first nut, a second washer slidably connected to the outer wall of the keyway and fitted to the outer wall of the first washer, a second nut and a retaining spring fitted into the inner wall of the second nut, an inner retaining block fixedly connected to the inner wall of the retaining spring and fitted to the keyway, and an outer retaining block fixedly connected to the outer wall of the retaining spring and fitted to the outer wall of the second nut, a retaining groove being formed at the connection between the second nut and the outer retaining block.

[0007] Based on the above structure, the rotation of the first nut causes the shaft head to be fixed on the shaft shoulder. Then, the operator rotates the second nut, and the rotation of the second nut locks the first nut by engaging with the first washer and the second washer. Then, the operator places the snap ring on the outer wall of the second nut, so that the inner snap block of the snap ring engages with the keyway, and the outer snap block of the snap ring engages with the slot on the outer wall of the second nut, preventing the second nut from rotating relative to the first nut and thus achieving the locking operation of the shaft head.

[0008] Preferably, the connection points of the first nut and the first washer, and the connection points of the second washer and the second nut, are all provided with radial anti-slip patterns. In this embodiment, by providing radial anti-slip patterns, it is beneficial for the first nut and the first washer to fit tightly with the second washer and the second nut.

[0009] Preferably, the connection between the first washer and the second washer is ratcheted. In this embodiment, by setting the first washer and the second washer with ratcheted connection, relative rotation between the first nut and the second nut is avoided.

[0010] Preferably, the first nut and the second nut form a tight fit structure through the first washer and the second washer. In this embodiment, it is convenient for the operator to rotate the second nut. The rotation of the second nut locks the first nut by the engagement of the first washer and the second washer.

[0011] Preferably, the retaining ring is C-shaped. In this embodiment, by setting the retaining ring in a C-shape, it is beneficial to stabilize the locking operation of the second nut and avoid deformation of the retaining ring.

[0012] Preferably, there are two sets of inner locking blocks, which are perpendicular to the outer locking blocks. In this embodiment, by setting inner and outer locking blocks, it is beneficial to lock the second nut and thus lock the shaft head.

[0013] Preferably, the second nut forms a limiting structure with the connecting screw through the inner and outer locking blocks. In this embodiment, the inner locking block of the retaining spring engages with the keyway, and the outer locking block of the retaining spring engages with the locking groove on the outer wall of the second nut, so as to prevent the second nut from rotating relative to the screw and realize the locking operation of the shaft head.

[0014] The beneficial effects of this utility model are:

[0015] 1. The axle with a locking structure is provided with a first washer and a second washer. The axle head is installed on the outside of the connecting screw through a keyway. Then, the operator rotates the first nut, which causes the axle head to be fixed on the axle shoulder. Then, the operator rotates the second nut. The connection part of the first washer and the second washer is ratcheted, so that the rotation of the second nut locks the first nut by engaging the first washer and the second washer.

[0016] 2. The axle with a locking structure has an inner and outer locking block. The operator places the retaining spring on the outer wall of the second nut, so that the inner locking block of the retaining spring engages with the keyway, and the outer locking block of the retaining spring engages with the groove on the outer wall of the second nut, thus preventing the second nut from rotating relative to the other and achieving the locking operation of the axle head. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall three-dimensional unfolded structure of this utility model;

[0019] Figure 3 This is a schematic cross-sectional view of the shaft head structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the snap ring structure of this utility model.

[0021] The markings in the diagram are as follows:

[0022] 1. Axle frame; 2. Axle body; 3. Connecting screw; 4. Keyway; 5. Axle head; 6. First nut; 7. First washer; 8. Second washer; 9. Second nut; 10. Snap ring; 11. Inner snap block; 12. Outer snap block; 13. Snap groove. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1 - Figure 4 This application will be described in further detail.

[0024] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0025] This application discloses an axle with a locking structure, including an axle frame 1, an axle body 2 penetrating the inner wall of the axle frame 1, a connecting screw 3 fixedly connected to one end of the axle body 2, a keyway 4 formed on the outer wall of the connecting screw 3, an axle head 5 fitted into the outer wall of the keyway 4, a first nut 6 threadedly connected to the outer wall of the connecting screw 3 fitted into the outer wall of the axle head 5, a first washer 7 slidably connected to the outer wall of the keyway 4 fitted into the outer wall of the first nut 6, a second washer 8 slidably connected to the outer wall of the keyway 4 fitted into the outer wall of the first washer 7, a second nut 9 fitted into the outer wall of the second washer 8, a retaining spring 10 fitted into the inner wall of the second nut 9, an inner retaining block 11 fixedly connected to the inner wall of the retaining spring 10 and fitted into the keyway 4, and an outer retaining block 12 fixedly connected to the outer wall of the retaining spring 10 and fitted into the outer wall of the second nut 9, and a retaining groove 13 formed at the connection between the second nut 9 and the outer retaining block 12.

[0026] Based on the above structure, the rotation of the first nut 6 causes the shaft head 5 to be fixed on the shaft shoulder. Then, the operator rotates the second nut 9. The rotation of the second nut 9 locks the first nut 6 by engaging the first washer 7 and the second washer 8. Then, the operator places the retaining spring 10 on the outer wall of the second nut 9, so that the inner retaining block 11 of the retaining spring 10 engages with the keyway 4, and the outer retaining block 12 of the retaining spring 10 engages with the retaining groove 13 on the outer wall of the second nut 9, preventing the second nut 9 from rotating relative to the shaft head 5, thus achieving the locking operation.

[0027] In one embodiment, the connection points of the first nut 6 and the first washer 7, as well as the connection points of the second washer 8 and the second nut 9, are all provided with radial anti-slip textures.

[0028] In this embodiment, by setting radial anti-slip textures, it is beneficial for the first nut 6 and the first washer 7 to fit tightly with the second washer 8 and the second nut 9.

[0029] In one embodiment, the connection between the first washer 7 and the second washer 8 is ratcheted.

[0030] In this embodiment, by providing a first washer 7 and a second washer 8 with a ratchet-shaped connection, relative rotation between the first nut 6 and the second nut 9 is prevented.

[0031] In one embodiment, the first nut 6 forms a tight fit with the second nut 9 through the first washer 7 and the second washer 8.

[0032] In this embodiment, it is convenient for the operator to rotate the second nut 9. The rotation of the second nut 9 locks the first nut 6 by engaging the first washer 7 and the second washer 8.

[0033] In one embodiment, the retaining ring 10 is C-shaped.

[0034] In this embodiment, by setting a "C"-shaped retaining ring 10, it is beneficial to stabilize the locking operation of the second nut 9 and avoid deformation of the retaining ring 10.

[0035] In one embodiment, the inner card block 11 is provided in two sets, and the two sets of inner card blocks 11 are perpendicular to the outer card block 12.

[0036] In this embodiment, by setting the inner locking block 11 and the outer locking block 12, it is beneficial to perform a locking operation on the second nut 9, thereby locking the shaft head 5.

[0037] In one embodiment, the second nut 9 forms a limiting structure with the connecting screw 3 through the inner locking block 11 and the outer locking block 12.

[0038] In this embodiment, the inner retaining block 11 of the retaining spring 10 is engaged with the keyway 4, and the outer retaining block 12 of the retaining spring 10 is engaged with the retaining groove 13 on the outer wall of the second nut 9, so as to prevent the second nut 9 from rotating relative to each other and realize the locking operation of the shaft head 5.

[0039] In this embodiment, when the axle with the locking structure is in use, firstly, the axle head 5 is installed on the outside of the connecting screw 3 through the keyway 4. Then, the operator rotates the first nut 6, which rotates and drives the axle head 5 to be fixed on the axle shoulder. Next, the operator rotates the second nut 9, which rotates and locks the first nut 6 by engaging the first washer 7 and the second washer 8.

[0040] Then, the staff placed the snap ring 10 on the outer wall of the second nut 9, so that the inner snap block 11 of the snap ring 10 was engaged with the keyway 4, and the outer snap block 12 of the snap ring 10 was engaged with the snap groove 13 on the outer wall of the second nut 9, so as to prevent the second nut 9 from rotating relative to each other and to achieve the locking operation of the shaft head 5.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An axle with a locking structure, characterized in that, Includes an axle frame (1), the inner wall of which is penetrated by an axle body (2), one end of which is fixedly connected to a connecting screw (3), the outer wall of which is provided with a keyway (4), a shaft head (5) is fitted into the outer wall of which is attached, a first nut (6) is threadedly connected to the outer wall of the connecting screw (3), and a first washer (7) is slidably connected to the outer wall of the keyway (4) on the outer wall of which is attached. 7) The outer wall is fitted with a second washer (8) that slides with the outer wall of the keyway (4). The outer wall of the second washer (8) is fitted with a second nut (9). The inner wall of the second nut (9) is fitted with a retaining spring (10). The inner wall of the retaining spring (10) is fixedly connected with an inner retaining block (11) that fits into the keyway (4). The outer wall of the retaining spring (10) is fixedly connected with an outer retaining block (12) that fits into the outer wall of the second nut (9). A retaining groove (13) is provided at the connection between the second nut (9) and the outer retaining block (12).

2. The axle with a locking structure according to claim 1, characterized in that: The connection points of the first nut (6) and the first washer (7) and the connection points of the second washer (8) and the second nut (9) are all provided with radial anti-slip patterns.

3. The axle with a locking structure according to claim 1, characterized in that: The connection between the first washer (7) and the second washer (8) is ratcheted.

4. The axle with a locking structure according to claim 1, characterized in that: The first nut (6) forms a tight fit with the second nut (9) through the first washer (7) and the second washer (8).

5. The axle with a locking structure according to claim 1, characterized in that: The circlip (10) is C-shaped.

6. The axle with a locking structure according to claim 1, characterized in that: The inner card block (11) is provided in two sets, and the two sets of inner card blocks (11) are perpendicular to the outer card block (12).

7. The axle with a locking structure according to claim 1, characterized in that: The second nut (9) forms a limiting structure with the connecting screw (3) through the inner locking block (11) and the outer locking block (12).

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