CN216618443U

CN216618443U - High-precision gap-adjustable double nut

Info

Publication number: CN216618443U
Application number: CN202123371196.XU
Authority: CN
Inventors: 余旭培; 徐建明; 江东军; 梁志源; 魏巧斌; 史磊; 朱凌宏
Original assignee: ZHEJIANG DELIYA AUTOMATION MANUFACTURE CO Ltd
Current assignee: ZHEJIANG DELIYA AUTOMATION MANUFACTURE CO Ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-05-27
Anticipated expiration: 2031-12-29

Abstract

The utility model discloses a high-precision gap-adjustable double nut, which comprises a rotating pipe, an adjusting key and a threaded lead screw, wherein a first nut and a second nut are connected to the threaded lead screw in a threaded manner, one end of the second nut is fixedly connected with a rotating connecting pipe, the outer end of the rotating connecting pipe is fixedly connected with a connecting pipe lug, an inner wall of the rotating pipe is sequentially provided with a rotating pipe internal thread and a rotating pipe sliding groove, the rotating pipe is rotatably connected to the connecting pipe lug through the rotating pipe sliding groove, a rotating pipe through hole is formed in the rotating pipe, an adjusting cylinder is arranged in the rotating pipe through hole, through the design of a gap adjusting structure, the gap between the nuts can be adjusted only by manually rotating the rotating pipe, in addition, the adjusting key and the adjusting cylinder are arranged, so that the gap is not occupied, the adjusting key can be used for adjustment, and the unintentional touch of external personnel can be avoided, resulting in loosening between the nuts.

Description

High-precision gap-adjustable double nut

Technical Field

The utility model relates to the technical field of gap adjustment of double-nut screws, in particular to a high-precision gap-adjustable double nut.

Background

A conventional feed screw-nut mechanism converts a rotary motion into a linear motion, and the feed screw and the nut are operated in such a manner that when the feed screw rotates relative to the nut, the feed screw and the nut are displaced relative to each other in an axial direction. The screw-nut mechanism has the advantages of stable transmission, high precision, high transmission efficiency and the like, is widely applied to various industrial equipment and precision instruments, but after long-time use, a gap is easily generated due to abrasion between a screw and a nut.

The gap between the screw rod and the nut is eliminated through the gasket in the common double-nut screw rod, although the structure is simple, the adjustment is inconvenient, and the nut is loosened due to the fact that external personnel touch the nut unintentionally, so that the double-nut screw rod with the high-precision adjustable gap needs to be provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-precision gap-adjustable double nut, through the design of a gap adjusting structure, the gap between nuts can be adjusted only by manually rotating a rotating pipe, in addition, the arrangement of a key and an adjusting cylinder is adjusted, so that the nut does not occupy space, the nut can be adjusted only by adjusting the key, and the nut can be prevented from being loosened due to the fact that external personnel touch the nut unintentionally, so that the problems in the background art are solved.

In order to achieve the purpose, the utility model provides the following technical scheme: a high-precision gap-adjustable double nut comprises a rotating pipe, an adjusting key and a threaded screw rod, wherein a first nut and a second nut are connected to the threaded screw rod in a threaded manner, one end of the second nut is fixedly connected with a rotating connecting pipe, and the outer end of the rotating connecting pipe is fixedly connected with a connecting pipe lug;

the inner wall of the rotating tube is sequentially provided with a rotating tube internal thread and a rotating tube sliding groove, the rotating tube is rotatably connected onto the connecting tube convex block through the rotating tube sliding groove, a rotating tube through hole is formed in the rotating tube and penetrates through the rotating tube internal thread, an adjusting cylinder is arranged in the rotating tube through hole, the upper end of the adjusting cylinder is provided with an adjusting cylinder rectangular groove, the lower end of the adjusting cylinder is fixedly connected with an adjusting cylinder rubber pad, and the side end of the adjusting cylinder is integrally provided with an adjusting cylinder side thread.

Preferably, a through hole side thread is formed on a side wall of the through hole of the rotating pipe, and the adjusting cylinder is connected to the through hole side thread through the adjusting cylinder side thread.

Preferably, the lower end of the adjusting key is integrally provided with a rectangular plug, and the adjusting key is movably inserted into the rectangular groove of the adjusting column through the rectangular plug.

Preferably, one end of the first nut is fixedly connected with a first threaded pipe, the first threaded pipe is arranged at the lower end of the rotating pipe, and an external thread is integrally arranged on the first threaded pipe.

Preferably, the lower end of the rotating pipe is connected to a first threaded pipe through threads in the rotating pipe, and the adjusting column rubber cushion is arranged at the upper end of the first threaded pipe.

Preferably, the other end of the first nut is provided with a nut flange, and the nut flange is provided with a flange through hole.

Compared with the prior art, the utility model has the beneficial effects that:

through the design of the clearance adjusting structure, when clearance adjustment is needed between the first nut and the second nut, the rotating pipe is manually rotated firstly, so that the clearance between the rotating pipe and the first nut is enlarged or reduced, the distance between the first nut and the second nut can be adjusted, and the operation is simple;

after the clearance of the rotating pipe is adjusted, the adjusting key is inserted on the adjusting column, and meanwhile, the adjusting key is rotated, so that the adjusting column body can ascend or descend through threaded rotation, the adjusting column rubber gasket is pressed on a first threaded pipe, the position of the rotating pipe is fixed and cannot move in disorder, and then the adjusting key is taken out to complete adjustment;

the clearance between the first nut and the second nut can be adjusted only by adjusting the key, and the first nut and the second nut are not loosened due to the fact that external personnel touch the first nut and the second nut unintentionally.

Drawings

FIG. 1 is a three-dimensional schematic of the structure of the present invention;

FIG. 2 is a schematic view of a gap adjustment structure of the present invention;

fig. 3 is a three-dimensional schematic view of the structure of the adjusting key and the adjusting cylinder of the present invention.

In the figure: 1. a first nut; 11. a nut flange; 12. a flange through hole; 13. a first threaded pipe; 2. a second nut; 21. rotating the connecting pipe; 22. connecting the pipe bump; 3. rotating the tube; 31. rotating the internal threads of the tube; 32. a rotating tube chute; 33. rotating the tube through hole; 34. through hole side threads; 4. an adjustment cylinder; 41. a rectangular groove of the adjusting column; 42. adjusting the column rubber pad; 43. adjusting the side threads of the column; 5. adjusting the key; 51. a rectangular plug; 6. and (4) a threaded screw rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The same reference numbers in different drawings identify the same or similar elements; it should be further understood that terms such as "upper," "lower," "front," "back," "inner," "outer," "end," and the like are used solely for ease of reference by the reader to the constructions illustrated in the figures and are used solely for the purpose of describing the utility model, and are not meant as limitations of the utility model.

Referring to fig. 1-3, the present invention provides a technical solution: a high-precision gap-adjustable double nut comprises a double nut structure and a gap adjusting structure, wherein the double nut structure mainly comprises a first nut 1 and a second nut 2, nut internal threads are formed in the first nut 1 and the second nut 2, and a screw rod external thread is formed on a threaded screw rod 6, so that the first nut 1 and the second nut 2 are in threaded connection with the threaded screw rod 6; one end of the first nut 1 is fixedly connected with a first threaded pipe 13, one end of the second nut 2 is fixedly connected with a rotary connecting pipe 21, the rotary connecting pipe 21 and the first threaded pipe 13 are arranged in a port alignment mode, the other end of the first nut 1 is fixedly connected with a nut flange 11, and a flange through hole 12 is formed in the nut flange 11, so that an external structure can be connected with a double-nut structure through the flange through hole 12; the basic arrangement of the double nut structure is completed through the above.

The clearance adjusting structure comprises a rotating pipe 3, an adjusting cylinder 4 and an adjusting key 5, wherein a rotating pipe internal thread 31 and a rotating pipe chute 32 are sequentially arranged on the inner wall of the rotating pipe 3, the rotating pipe internal thread 31 and the rotating pipe chute 32 respectively correspond to two front and rear ports of the rotating pipe 3, and a connecting pipe bump 22 is fixedly connected to the outer end of the rotating connecting pipe 21, so that the rotating pipe 3 can be movably inserted into the connecting pipe bump 22 through the rotating pipe chute 32, and the rotating pipe 3 can rotate on the connecting pipe bump 22;

the rotating pipe 3 is arranged at the upper end of the first threaded pipe 13, and the first threaded pipe 13 is integrally provided with an external thread, so that the rotating pipe 3 can be connected to the first threaded pipe 13 through the rotating pipe internal thread 31 in a threaded manner; with the above arrangement, when the rotary pipe 3 rotates on the first threaded pipe 13, the distance between the rotary pipe and the first nut 1 can be enlarged or shortened, and the second nut 2 is rotatably connected to the rotary pipe 3 through the connecting pipe bump 22, so that the second nut 2 can simultaneously enlarge or shorten the distance between the rotary pipe 3 and the first nut 1;

a rotating pipe through hole 33 is formed in the rotating pipe 3, and the rotating pipe through hole 33 penetrates through the rotating pipe internal thread 31 and is arranged at the upper end of the first threaded pipe 13; the side end of the adjusting cylinder 4 is integrally provided with an adjusting cylinder side thread 43, the side wall of the rotating pipe through hole 33 is provided with a through hole side thread 34, so that the adjusting cylinder 4 is in threaded connection with the through hole side thread 34 through the adjusting cylinder side thread 43, the adjusting cylinder 4 can ascend or descend in the rotating pipe through hole 33 through rotation, and the lower end of the adjusting cylinder 4 is fixedly connected with an adjusting cylinder rubber pad 42, so that the adjusting cylinder rubber pad 42 can be pressed on the first threaded pipe 13 when the adjusting cylinder 4 descends;

the upper end of the adjusting cylinder 4 is provided with an adjusting cylinder rectangular groove 41, the lower end of the adjusting key 5 is integrally provided with a rectangular plug 51, so that the adjusting key 5 can be movably inserted into the adjusting cylinder rectangular groove 41 through the rectangular plug 51, and the adjusting cylinder 4 can be driven to rotate by rotating the adjusting key 5.

The working principle is as follows: when the clearance between the first nut 1 and the second nut 2 needs to be adjusted, the rotating pipe 3 is manually rotated, and at the moment, the rotating pipe 3 rotates on the first threaded pipe 13 through the rotating pipe internal thread 31, so that the rotating pipe 3 can move, the clearance between the first nut 1 and the second nut 1 can be expanded or reduced, and the distance between the first nut 1 and the second nut 2 can be adjusted;

after the clearance of the rotating pipe 3 is adjusted, the rectangular plug 51 at the end of the adjusting key 5 is inserted into the rectangular groove 41 of the adjusting column, the adjusting key 5 is rotated, the adjusting column 4 is in threaded connection with the through hole side thread 34 through the adjusting column side thread 43 at the moment, the adjusting column 4 can ascend or descend through rotation, so that the adjusting column rubber gasket 42 is pressed on the first threaded pipe 13, the position of the rotating pipe 3 is fixed, the rotating pipe 3 cannot move in disorder, then the adjusting key 5 is taken out, and the clearance adjustment between the first nut 1 and the second nut 2 is completed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a two nuts in adjustable clearance of high accuracy, includes rotating tube (3), regulation key (5), screw lead screw (6), its characterized in that: a first nut (1) and a second nut (2) are connected to the threaded screw rod (6) in a threaded manner, one end of the second nut (2) is fixedly connected with a rotary connecting pipe (21), and the outer end of the rotary connecting pipe (21) is fixedly connected with a connecting pipe bump (22);

the inner wall of rotating tube (3) has seted up rotating tube internal thread (31) and rotating tube spout (32) in proper order, rotating tube (3) rotate through rotating tube spout (32) and connect on connecting pipe lug (22), rotating tube through-hole (33) have been seted up on rotating tube (3), rotating tube through-hole (33) pass rotating tube internal thread (31), be provided with in rotating tube through-hole (33) and adjust cylinder (4), adjust post rectangular channel (41) have been seted up to the upper end of adjusting cylinder (4), the lower extreme fixedly connected with of adjusting cylinder (4) adjusts post rubber blanket (42), the integration of adjusting cylinder (4) is provided with adjusting post side screw thread (43).

2. A high precision adjustable gap double nut as defined in claim 1, wherein: through-hole side threads (34) are formed in the side wall of the rotating pipe through hole (33), and the adjusting column body (4) is in threaded connection with the through-hole side threads (34) through the adjusting column side threads (43).

3. A high precision adjustable gap double nut as defined in claim 2, wherein: the lower end of the adjusting key (5) is integrally provided with a rectangular plug (51), and the adjusting key (5) is movably inserted into the rectangular groove (41) of the adjusting column through the rectangular plug (51).

4. A high precision adjustable gap double nut as defined in claim 3, wherein: one end of the first nut (1) is fixedly connected with a first threaded pipe (13), the first threaded pipe (13) is arranged at the lower end of the rotating pipe (3), and an external thread is integrally arranged on the first threaded pipe (13).

5. A high precision adjustable gap double nut as defined in claim 4, wherein: the lower end of the rotating pipe (3) is in threaded connection with a first threaded pipe (13) through a rotating pipe internal thread (31), and the adjusting column rubber pad (42) is arranged at the upper end of the first threaded pipe (13).

6. A high precision adjustable gap double nut as claimed in claim 5, wherein: the other end of the first nut (1) is provided with a nut flange (11), and a flange through hole (12) is formed in the nut flange (11).