CN114412912A

CN114412912A - Connecting shaft and shaft connecting assembly

Info

Publication number: CN114412912A
Application number: CN202111677823.4A
Authority: CN
Inventors: 李文武
Original assignee: Zhejiang Kehao Plastic Machinery Co ltd
Current assignee: Zhejiang Kehao Plastic Machinery Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-04-29

Abstract

The invention relates to a connecting shaft and a shaft connecting assembly, wherein the shaft connecting assembly comprises a connecting shaft, an anti-falling gasket and a bolt, the bolt is provided with a screw rod part and a head part, a connecting hole is formed in the center of the anti-falling gasket, the screw rod part can sequentially penetrate through the connecting hole and the through hole and is in threaded connection with a threaded hole, a center hole is formed in the center of the end part of the connecting shaft, a threaded hole is formed in the center of the bottom of the center hole, and the diameter of the center hole is larger than that of the threaded hole. The invention has the advantages that: the center of the central hole is provided with the threaded hole, so that the connecting structure can be simplified, the connecting shaft can be processed more conveniently, and a plurality of devices do not need to be replaced; the diameter of the central hole is larger than that of the threaded hole to form clearance, so that the inner wall of the central hole is protected, the long-term use is ensured, and the positioning accuracy of the connecting shaft is ensured when the connecting shaft is used for multiple times.

Description

Connecting shaft and shaft connecting assembly

Technical Field

The invention relates to the field of shaft bodies, in particular to a connecting shaft and a shaft connecting assembly.

Background

Gaskets are mechanical seals between two objects, typically used to prevent pressure, corrosion, and natural expansion and contraction of the tubing between the two objects, and because the machined surface may not be perfect, the use of gaskets can fill irregularities. Mechanical spacers are typically installed between the bolts and the structural member mounting surface to improve the stability of the bolt installation.

The tip centre bore position of traditional axle adds anti-disengaging structure gasket, generally can set up two screw holes from top to bottom at the centre bore, but the structure of the centre bore of awl silk process can injure the axle influences the connection precision of axle head, and the course of working is more loaded down with trivial details, needs 2 to 3 equipment just can process the completion.

How to design a structure capable of simplifying a shaft body processing mode while ensuring the accuracy of a center hole becomes a difficult problem.

Disclosure of Invention

In view of the above, it is desirable to provide a connecting shaft and a shaft connecting assembly.

The invention discloses a connecting shaft, wherein a center hole is formed in the center of the end part of the connecting shaft, a threaded hole is formed in the center of the bottom of the center hole, and the diameter of the center hole is larger than that of the threaded hole.

In one embodiment, the upper edge of the central hole is provided with a guide conical surface.

In one embodiment, the upper edge of the guide conical surface is provided with an avoiding groove.

In one embodiment, the central bore diameter is 4 mm larger than the threaded bore diameter.

The invention also discloses a shaft connecting assembly which comprises the connecting shaft as described in any one of the above, the shaft connecting assembly can be connected to a mounting piece, the mounting piece is provided with a through hole, the through hole is provided with a positioning boss matched with the central hole, the shaft connecting assembly further comprises an anti-drop gasket and a bolt, the bolt is provided with a screw rod part and a head part, the center of the anti-drop gasket is provided with a connecting hole, and the screw rod part can sequentially penetrate through the connecting hole and the through hole and is in threaded connection with the threaded hole.

In one embodiment, the bolt is provided with an annular flow passage, and a first flow passage, a second flow passage and a third flow passage which are communicated with the annular flow passage, the annular flow passage is located at the head part, an annular slide block is slidably arranged at one side of the head part close to the screw part, the first flow passage, the second flow passage and the third flow passage are communicated with the side wall of the screw part, a first abutting slide block is arranged in the first flow passage, a second abutting slide block is arranged in the second flow passage, and a third abutting slide block is arranged in the third flow passage.

In one embodiment, a first threaded part matched with threads in the threaded hole is arranged on one side, away from the center of the screw part, of the first abutting sliding block.

In one embodiment, a side of the second abutting sliding block, which is far away from the center of the screw portion, is provided with a second threaded portion matched with threads in the threaded hole, and a side of the third abutting sliding block, which is far away from the center of the screw portion, is provided with a third threaded portion matched with the threads in the threaded hole.

In one embodiment, the head is provided with a communicating cavity, and the communicating cavity is communicated with the first flow passage, the second flow passage and the third flow passage.

In one embodiment, a sunken groove is formed in one side, far away from the screw rod portion, of the head portion, and a partition plate is arranged at the bottom of the sunken groove so as to be separated from the communication cavity.

The invention has the advantages that:

(1) the center of the central hole is provided with the threaded hole, so that the connecting structure can be simplified, the connecting shaft can be processed more conveniently, and a plurality of devices do not need to be replaced;

(2) the diameter of the central hole is larger than that of the threaded hole to form clearance, so that the inner wall of the central hole is protected, the long-term use is ensured, and the positioning accuracy of the connecting shaft is ensured when the connecting shaft is used for multiple times;

(3) the annular runner, the first runner, the second runner and the third runner are arranged in the bolt, and the three abutting sliders are extruded by the annular sliders through media, so that the bolt can be stably connected into the threaded hole, and the bolt is prevented from falling off;

(4) through setting up intercommunication chamber and baffle to the mode of destroying the baffle is discharged the medium from the intercommunication intracavity, thereby light dismantlement bolt, so that the connecting axle is dismantled.

Drawings

Fig. 1 is a perspective view of a shaft connecting assembly provided by the present invention;

FIG. 2 is an exploded view of a shaft coupling assembly provided by the present invention;

FIG. 3 is a partial cross-sectional view of a connecting shaft provided by the present invention;

FIG. 4 is a partial enlargement at A according to FIG. 3;

FIG. 5 is a cross-sectional view of a bolt provided in accordance with the present invention;

fig. 6 is a perspective view of a mounting member provided in the present invention.

In the figure, the connecting shaft 1, the center hole 11, the threaded hole 12, the guide tapered surface 13, the anti-drop washer 2, the connecting hole 21, the bolt 3, the screw portion 31, the first flow passage 311, the first abutting slider 312, the first threaded portion 313, the head portion 32, the annular flow passage 321, the annular slider 322, the communicating chamber 323, the partition plate 324, the sink groove 325, the mounting piece 4, the through hole 41, and the positioning boss 42.

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.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 and 3, the invention discloses a connecting shaft 1, wherein a central hole 11 is formed in the center of an end of the connecting shaft 1, a threaded hole 12 is formed in the center of the bottom of the central hole 11, and the diameter of the central hole 11 is larger than that of the threaded hole 12.

Preferably, the central hole 11 is provided with a guiding tapered surface 13 along the upper edge. The bolt 3 and the positioning boss 42 are conveniently connected with the central hole 11.

Preferably, an avoiding groove 14 is formed on the upper edge of the guiding conical surface 13.

Preferably, the diameter of the central hole 11 is 4 mm larger than the diameter of the threaded hole 12. By the arrangement, the inner wall of the central hole 11 can be prevented from being damaged and worn during installation.

As shown in fig. 2, the invention further discloses a shaft connecting assembly, which comprises the connecting shaft 1 of any one of the above, the shaft connecting assembly can be connected to a mounting piece 4, as shown in fig. 6, a through hole 41 is formed in the mounting piece 4, a positioning boss 42 matched with the central hole 11 is arranged at the through hole 41, the shaft connecting assembly further comprises an anti-drop gasket 2 and a bolt 3, the bolt 3 is provided with a screw rod part 31 and a head part 32, a connecting hole 21 is formed in the center of the anti-drop gasket 2, and the screw rod part 31 can sequentially penetrate through the connecting hole 21 and the through hole 41 and is in threaded connection with the threaded hole 12.

It can be understood that the positioning boss 42 extends into the central hole 11 and is tightly matched with the inner wall of the central hole 11, so that the connecting shaft 1 can be accurately positioned.

Preferably, as shown in fig. 5, an annular flow passage 321, and a first flow passage 311, a second flow passage (not shown), and a third flow passage (not shown) communicated with the annular flow passage 321 are formed in the bolt 3, the annular flow passage 321 is located at the head portion 32, an annular slider 322 is slidably disposed on one side of the head portion 32 close to the screw portion 31, the first flow passage 311, the second flow passage, and the third flow passage are communicated with a side wall of the screw portion 31, a first abutting slider 312 is disposed in the first flow passage 311, a second abutting slider is disposed in the second flow passage, and a third abutting slider is disposed in the third flow passage.

It should be mentioned that the annular flow passage 321, the first flow passage 311, the second flow passage, and the third flow passage are filled with media, and the first flow passage 311, the second flow passage, and the third flow passage are uniformly distributed on the screw portion 31 in an annular shape with the axis of the screw portion 31 as a center.

Preferably, a first screw portion 313 adapted to the screw thread in the screw hole 12 is provided on a side of the first abutment slider 312 away from the center of the screw portion 31.

Preferably, one side of the second abutting sliding block, which is far away from the center of the screw rod part 31, is provided with a second threaded part matched with the threads in the threaded hole 12, and one side of the third abutting sliding block, which is far away from the center of the screw rod part 31, is provided with a third threaded part matched with the threads in the threaded hole 12.

It can be understood that the bolt 3 is more smoothly assembled and disassembled by providing the first, second and

third screw portions

313, 313.

Preferably, the head portion 32 is provided with a communication cavity 323, and the communication cavity 323 communicates with the first flow passage 311, the second flow passage, and the third flow passage.

Preferably, a sunken groove 325 is formed in the head portion 32 on a side away from the screw portion 31, and a partition 324 is disposed at the bottom of the sunken groove 325 to separate the communication cavity 323.

The working mode of the shaft connecting assembly provided by the invention is as follows: pass screw portion 31 of bolt 3 in proper order through connecting hole 21 of anticreep gasket 2, through-hole 41, the centre bore 11 of installed part 4, in order with screw hole 12 threaded connection, work as annular slider 322 on the head 32 butt when anticreep gasket 2, annular slider 322 receives the extrusion to move first butt slider 312, second butt slider, third butt slider to the direction of keeping away from screw portion 31 axis respectively through first runner 311, second runner, third runner, in order with closely laminate with screw hole 12 inner wall. So set up and make bolted connection difficult by reverse rotation to improved the reliability of connecting, when needs are dismantled, destroyed baffle 324, made the medium in the annular runner 321 flow, then first butt slider 312, second butt slider, third butt slider and annular slider 322 all are in the lax state, make bolted connection 3 can be light loose the dismantlement down, thereby made things convenient for the dismantlement degree of difficulty.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The connecting shaft is characterized in that a center hole is formed in the center of the end portion of the connecting shaft, a threaded hole is formed in the center of the bottom of the center hole, and the diameter of the center hole is larger than that of the threaded hole.

2. The connecting shaft according to claim 1, wherein the central hole is provided with a guide taper along an upper edge thereof.

3. The connecting shaft according to claim 2, wherein an avoiding groove is formed in the upper edge of the guide conical surface.

4. A coupling shaft as claimed in claim 1, wherein the central bore diameter is 4 mm larger than the threaded bore diameter.

5. A shaft connecting assembly, comprising the connecting shaft as claimed in any one of claims 1, 2 or 3, wherein the shaft connecting assembly can be connected to a mounting member, the mounting member is provided with a through hole, a positioning boss matched with the central hole is arranged at the through hole, the shaft connecting assembly further comprises an anti-dropping gasket and a bolt, the bolt is provided with a screw portion and a head portion, the center of the anti-dropping gasket is provided with a connecting hole, and the screw portion can sequentially pass through the connecting hole and the through hole and is in threaded connection with the threaded hole.

6. The shaft connecting assembly according to claim 5, wherein an annular flow passage and a first flow passage, a second flow passage and a third flow passage which are communicated with the annular flow passage are formed in the bolt, the annular flow passage is located at the head, an annular sliding block is slidably arranged on one side, close to the screw portion, of the head, the first flow passage, the second flow passage and the third flow passage are communicated with the side wall of the screw portion, a first abutting sliding block is arranged in the first flow passage, a second abutting sliding block is arranged in the second flow passage, and a third abutting sliding block is arranged in the third flow passage.

7. The shaft connection assembly of claim 6 wherein a side of the first abutment slide remote from the center of the threaded shank portion is provided with a first threaded portion that mates with threads in the threaded bore.

8. The shaft connection assembly according to claim 7, wherein a side of the second abutment slider remote from the center of the screw portion is provided with a second threaded portion adapted to the threads in the threaded hole, and a side of the third abutment slider remote from the center of the screw portion is provided with a third threaded portion adapted to the threads in the threaded hole.

9. The shaft connecting assembly of claim 6 wherein the head defines a communication chamber that communicates with the first, second, and third flow passages.

10. The shaft connecting assembly of claim 9 wherein the head portion has a recessed channel formed in a side thereof remote from the shank portion, the recessed channel having a bottom portion provided with a partition to separate the communication chamber.