CN212643287U

CN212643287U - Large self-locking nut with sectional opening

Info

Publication number: CN212643287U
Application number: CN202021415310.7U
Authority: CN
Inventors: 许建忠; 康少博; 乔永钦; 董进朝; 张坤; 邵广军; 崔云翔; 邢鹤琛; 许俊伟
Original assignee: Zhengzhou Research Institute of Mechanical Engineering Co Ltd
Current assignee: Zhengzhou Research Institute of Mechanical Engineering Co Ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-03-02
Anticipated expiration: 2030-07-17

Abstract

The utility model relates to a fastener technical field discloses a large-scale self-locking nut of segmentation open-ended, which comprises a body, the terminal surface that the body is located one end of nut axial is the free end face, the terminal surface that the body is located another of nut axial is the working end face, a plurality of single-side open groove section has been arranged round the axle center of nut on the body, the opening of every open groove section all faces the axle center of nut, the position that is close to the both ends of every open groove section on the body is equipped with the incision, the incision begins to communicate to the open groove section from the free end face of body, the position that faces every open groove section on the body is equipped with the screw via hole, the screw via hole begins to communicate to the open groove section from the free end face of body, be equipped with the bolt screw. The utility model discloses a self-locking nut multiple spot atress, the atress is balanced, and the auto-lock is locking effectual, and the flexible volume that adopts the notched multistage open slot to provide is bigger.

Description

Large self-locking nut with sectional opening

Technical Field

The utility model relates to a fastener technical field, more specifically relate to a large-scale self-locking nut of segmentation open-ended.

Background

Nuts are basically divided into two main categories according to attributes: standard nuts and non-standard nuts. The standard nut comprises a national standard nut, an international standard nut, a German standard nut and the like, and is a fastener commonly used in the mechanical field and daily life. Standard nuts are typically used with a spring washer or a stop washer or the like to provide anti-loosening protection. For non-standard nuts, due to spatial positions, processing and assembling of washers, assembling of nuts, anti-loose effect and the like, elastic washers or stop washers cannot be basically adopted for anti-loose protection.

For this reason, some non-standard nuts use a self-locking structure for anti-loose protection. For example, the technical scheme disclosed in the chinese utility model patent with application number 201821469749.0 is a self-locking non-standard nut named as a self-locking round nut. The main improvement structure of this patent scheme is that the lateral wall that runs through the nut sets up an curved auto-lock breach to at the position locking screw of auto-lock breach, utilize the external screw thread of screw to compensate the internal thread of nut auto-lock breach department, and then change the local pitch of the auto-lock breach department of nut, thereby solve the easy not hard up problem that appears of nut. However, the proposal is only suitable for small non-standard nuts, and the anti-loosening effect of the improved structure is not ideal for large non-standard nuts. In addition, the notch structure penetrating through the side wall of the nut has a great influence on the strength of the nut. In addition, the torque applied to the screw is large when the local thread pitch of the self-locking notch of the nut is changed, namely, the notch structure generates enough deformation, and the large non-standard nut sometimes cannot provide enough deformation even if the screw is broken.

SUMMERY OF THE UTILITY MODEL

The utility model provides a large self-locking nut with sectional openings, which overcomes the defects in the prior art.

The utility model discloses a following technical scheme realizes above-mentioned purpose.

The utility model provides a large-scale self-locking nut of segmentation open-ended, which comprises a body, the body is located the terminal surface that the nut axial was one end and is the free end face, the terminal surface that the body is located the another end of nut axial is the working end face, a plurality of single side open groove section has been arranged round the axle center of nut on the aforesaid body, the opening of every open groove section all faces the axle center of nut, the position that is close to the both ends of every open groove section on the body is equipped with the incision, the incision begins to communicate to the open groove section from the free end face of body, the position that faces every open groove section on the body is equipped with the screw via hole, the screw via hole begins to communicate to the open groove section from the free end face of body.

For a large nut, like the prior art, only a self-locking notch is arranged at a local part, then the anti-loosening acting force provided by a locking screw is very limited, and the nut can generate large enough rigid deformation only by applying large enough torque to the screw, so that the effective anti-loosening acting force can not be provided basically. For this reason, this scheme considers utilizing a plurality of open groove sections to set up the incision near the both ends of every open groove section, namely form a plurality of cantilever type internal thread section structures on large-scale nut, then pass the interior thread section of cantilever type and lock in the internal thread hole respectively with a plurality of bolts to can provide locking effort in a plurality of positions on large-scale nut's circumference. The structural style of this scheme produces rigid deformation more easily when the locking bolt, and the deformation effect that produces is better, and locking effect is more effective. After a plurality of bolts are locked along the circumferential direction of the nut, the nut provides anti-loosening acting force at a plurality of circumferential positions, namely the mutual acting force between the nut and the part in threaded fit with the nut is more balanced in the circumferential direction, so that the self-locking anti-loosening effect is better.

As a further improved structure form, the outer edge of the notch in the radial direction of the nut is positioned inside the outer contour in the radial direction of the nut. That is to say, the cut is not completely cut in the radial direction of the nut, and the opening groove section does not penetrate through the side wall of the nut, so that the structural form has less influence on the strength of the nut and ensures that the nut has enough strength.

As a further improved structure form, the shape of each open groove section on the radial section of the nut is a section of a circular ring, and the axial center of the circular ring is coaxial with the axial center of the nut. This structural style is simple, and reasonable in design further ensures that the nut has sufficient intensity.

As a further improved structure, each of the open groove sections includes two inner wall surfaces parallel to each other, and the inner wall surfaces are perpendicular to the axis of the nut. For example, the section of the opening groove section in the axial direction of the nut is rectangular or U-shaped, so that the processing is simpler, the saw blade milling cutter can be directly adopted for processing, the process cost is lower, and the process time is shorter.

As a further improved structure, a plurality of assembling process holes for inserting the pins are arranged on the body around the axis of the nut, the axes of the assembling process holes point to the axis of the nut, and orifices of the assembling process holes are exposed out of the body. The assembling process hole can be a cylindrical hole or an internal threaded hole. The large nut is different from a common nut and can be directly screwed by a spanner or a pliers, a plurality of assembling process holes are arranged on the body, and a large pin can be inserted into the assembling process holes during assembling, so that the nut can be screwed by pulling the large pin.

Compared with the prior art, the utility model still have following beneficial effect: the nut is stressed at multiple points on the whole, the stress is more balanced, the stress point multi-self-locking anti-loosening effect is good, the deformable quantity provided by the multi-section open slot with the notch is larger, the nut does not penetrate through the structure of the side wall, the influence on the strength of the whole structure of the nut is smaller, the processing technology cost is saved, and the processing efficiency is higher.

Drawings

Fig. 1 is a schematic perspective view of a round nut according to an embodiment of the present invention.

Fig. 2 is a schematic view of a radial variable-profile structure of a round nut according to an embodiment of the present invention.

Fig. 3 is a schematic axial sectional structure diagram of a round screw according to an embodiment of the present invention.

Fig. 4 is a partial enlarged view of fig. 3 at K.

Fig. 5 is a schematic view of the circular nut according to an embodiment of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings. The drawings are for illustrative purposes only and are not to be construed as limiting the patent.

In order to explain the embodiment more simply, some parts of the drawings or description that are known to those skilled in the art but are not relevant to the main content of the present invention will be omitted. In addition, some components in the drawings may be omitted, enlarged or reduced for convenience of description, but do not represent the size or the entire structure of an actual product.

Example (b):

as shown in fig. 1, 2, 3 and 4, a large self-locking round nut with a segmented opening includes a circular body 1, a central internal thread through hole 11 is formed at the axis of the body 1, and a trapezoidal thread is generally adopted for the central internal thread through hole 11 of the large nut. The end face of the body 1 at one axial end of the round nut is a free end face 12, and the end face of the body 1 at the other axial end of the round nut is a working end face 13. The utility model discloses the free end face and the working end face of the nut of record are just for the convenience of describing the structure of nut, are not to the restriction to protection scope. As shown in fig. 5, the large self-locking round nut with a segmented opening of the present embodiment is used for pressing a large rolling bearing 2, and the working end surface 13 of the round nut is used for abutting against the right end surface of the bearing 2.

As shown in fig. 1 and 2, six single-side open groove sections 14 are uniformly arranged on the body 1 around the axis of the round nut, the opening of each open groove section 14 faces the axis of the round nut, each open groove section 14 is shaped as a section of a circular ring on the radial section of the round nut, and the axis of the circular ring is coaxial with the axis of the round nut. As shown in fig. 3 and 4, each open groove section 14 of the present embodiment has a rectangular cross section in the axial direction of the round nut, and in other embodiments, the cross section of each open groove section 14 in the axial direction of the round nut may also have a U-shape, and regardless of the rectangular cross section or the U-shaped cross section, each open groove section 14 forms two inner wall surfaces parallel to each other, the inner wall surfaces are perpendicular to the axial center of the round nut, and the inner wall surfaces on the same side of each open groove section 14 are located on the same plane. The structure is simple and reasonable, the processing is simple, the saw blade milling cutter can be directly adopted for processing, the process cost is low, and the process time is short.

As shown in fig. 1, 2, 3 and 4, the body 1 is provided with notches 15 near both ends of each open groove section 14, and the notches 15 are communicated from the free end surface 12 to the open groove sections 14. Two screw through holes 16 and two internal thread blind holes 17 for locking are uniformly arranged on the body 1 at positions facing each opening groove section 14, and the axle centers of the twelve screw through holes 16 and the twelve internal thread blind holes 17 are parallel to the axle center of the round nut. Each screw through hole 16 communicates from the free end surface 12 to the open trough section 14. Twelve blind internally threaded holes 17 in the present embodiment are respectively arranged coaxially with the twelve through screw holes 16, and the blind internally threaded holes 17 extend from the left inner wall surface of the open groove section 14 in fig. 4 toward the working end surface 13. The blind internally threaded hole 17 is adapted to threadedly engage a bolt passing through the screw through hole 16 to deform the internal threads of the round nut at a plurality of locations to provide a self-locking anti-loosening force. In other embodiments, the internally threaded blind hole 17 may be penetrated to the working end face 13, but the influence on the overall strength, end face flatness, and the like of the round nut is significantly greater than the blind hole structure adopted in the present embodiment. In this embodiment, the screw through holes 16 and the internal thread blind holes 17 are the same in number, and the specific number and the specific size can be reasonably designed by those skilled in the art according to the size of the round nut, and can also be subjected to stress analysis and optimal design by using three-dimensional software or mechanical analysis software and the like.

The outer edge of the notch 15 in the radial direction of the round nut is positioned within the outer contour of the round nut in the radial direction. The cut 15 in the embodiment does not completely penetrate in the radial direction and the axial direction of the round nut, and the opening groove section 14 does not penetrate through the side wall of the round nut, so that the structural form of the embodiment has small influence on the strength of the round nut, and the round nut is ensured to have enough strength.

Eight assembling process holes 18 for inserting pins are uniformly distributed on the body 1 around the axis of the round nut, the axes of the eight assembling process holes 18 point to the axis of the round nut and are perpendicular to the axis of the round nut, and orifices of the assembling process holes 18 are located on the radial outer contour surface of the body 1, namely the outer circular surface of the round nut. The assembly tooling holes 18 in other embodiments may be threaded. Different from a common nut, the large round nut can be directly screwed by a wrench or a pliers and the like, eight assembly process holes 18 are arranged on the body 1, and a large pin can be inserted into the assembly process holes 18 during assembly, so that the large pin can be pulled to screw the round nut.

For ease of understanding, some relevant dimensions of the segmented open large self-locking round nut of the present embodiment are listed here, with an outside diameter of 1470mm, an inside minimum diameter of 1310mm, and a thickness of 116 mm. The axial cross-sectional dimensions of the open groove section 14 are: the length is 61mm and the width is 4 mm. The open groove section 14 subtends an angle of 50 degrees at its center. The distance from the right-side inner wall surface of the open groove section 14 to the free end surface 12 is 25 mm. The diameter of the screw through hole 16 is 20.8mm, and the internally threaded blind hole 17 is a threaded hole of M20. The screw through holes 16 are evenly distributed on a circle with the diameter of 1382 mm. The maximum distance from the outer edge of the notch 15 in the radial direction of the round nut to the axis of the round nut is 715mm, and the width of the notch 15 is 10 mm. These parameters are for illustration only and the claimed invention is not limited thereto.

When the large-size pin is used in the embodiment, the large-size pin is inserted into the assembly process hole 18, the round nut is aligned to a part in threaded fit with the large-size pin, the large-size pin is pulled to screw the round nut until the working end face 13 is attached to the bearing 2, and twelve bolts respectively penetrate through the twelve screw through holes 16 and are respectively locked in the twelve internal threaded blind holes 17.

In the present embodiment, six open groove segments 14 are adopted, and notches 15 are provided near both ends of each open groove segment 14, that is, six cantilevered internal thread segment structures are formed on the round nut, and then bolts are respectively passed through the cantilevered internal thread segments and locked into the blind internal thread holes 17, so that anti-loosening force can be provided at a plurality of positions on the circumference of the large round nut. The structural style of this embodiment produces rigidity deformation more easily when the locking bolt, and the deformation effect that produces is better, and locking effect is more effective. After a plurality of bolts are locked along the circumferential direction of the round nut, the round nut provides anti-loosening acting force at a plurality of positions in the circumferential direction, namely the mutual acting force between the round nut and the part in threaded fit with the round nut is more balanced in the circumferential direction, so that the self-locking anti-loosening effect is better.

The above is only a specific embodiment of the present invention, but the design concept of the present invention is not limited thereto, and the design concept of the present invention is to the insubstantial modification made by the present invention, which all falls into the protection scope of the present invention.

Claims

1. The utility model provides a large-scale auto-lock nut of segmentation open-ended, includes the body, the terminal surface that the body is located one end of nut axial is the free end face, the terminal surface that the body is located another end of nut axial is the working end face, a plurality of single side open groove section has been arranged round the axle center of nut on the body, the opening of every open groove section all faces the axle center of nut, the position that is close to the both ends of every open groove section on the body is equipped with the incision, the incision begins to communicate to the open groove section from the free end face of body, the position that faces every open groove section on the body is equipped with the screw via hole, the screw via hole begins to communicate to the open groove section from the free end face of body, be equipped with on the body and be used.

2. The large self-locking nut with the segmented opening as claimed in claim 1, wherein the outer edge of the notch in the radial direction of the nut is positioned within the outer contour in the radial direction of the nut.

3. The large self-locking nut with the segmented opening as claimed in claim 1, wherein each split groove segment is shaped as a segment of a circular ring in the radial section of the nut, and the axial center of the circular ring is coaxial with the axial center of the nut.

4. The large self-locking nut with a segmented opening as claimed in claim 1, wherein each split slot segment comprises two parallel inner wall surfaces, and the inner wall surfaces are perpendicular to the axis of the nut.

5. The large self-locking nut with the sectional opening according to claim 1, wherein a plurality of assembling process holes for inserting the pins are arranged on the body around the axis of the nut, the axis of each assembling process hole points to the axis of the nut, and orifices of the assembling process holes are exposed out of the body.