Rotating shaft for high-strength machine

Abstract

The utility model relates to the technical field of machine shaft parts, in particular to a high-strength machine rotating shaft which comprises a center shaft body and an outer shaft body, a limiting block is annularly arranged on the outer surface of the center shaft body, an installation hole matched with the center shaft body is formed in the outer shaft body, and a limiting groove matched with the limiting block is annularly formed in the inner wall of the installation hole. A positioning groove located on the same central axis with the limiting block is annularly formed in the outer surface of the outer shaft body, a connecting hole is formed in the positioning groove, a fastening bolt is arranged in the positioning groove and penetrates through the connecting hole to be in threaded connection with the limiting block, and a connecting reinforcing assembly is arranged in the limiting block; clamping holes matched with the connection reinforcing assemblies are formed in the inner walls of the two sides of the limiting grooves, when the fastening bolts are in threaded connection with the limiting blocks, the connection reinforcing assemblies and the clamping holes are driven to be locked, the outer shaft body can be independently replaced after being damaged, the whole body does not need to be replaced, and the center shaft body and the outer shaft body are firmly and stably connected.

Description

Technical Field

[0001] The utility model belongs to the technical field of machine shaft parts, and specifically relates to a high-strength rotating shaft for machines. Background Art

[0002] A rotating shaft is a cylindrical object that passes through the middle of a bearing, a wheel, or a gear. The shaft is a mechanical part that supports a rotating part and rotates with it to transmit motion, torque, or bending moment. It is widely used in various machine equipment, tools, and instruments. During use, when the outer surface of the shaft wears, the whole shaft needs to be replaced, otherwise its working stability will be affected. However, the method of replacing the whole shaft has a high cost. The Chinese patent document "202321076739.1" sets a connecting sleeve outside the shaft body and stably connects the shaft body and the connecting sleeve through bolts, snap rings, and snap ring grooves. Under the centrifugal force of the shaft rotation, the snap ring and the snap ring groove will cause structural instability, and its connection stability still needs to be improved. Moreover, a snap ring pliers is needed for replacement and disassembly, and its later use is complicated. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a high-strength rotating shaft for machines to solve the problems mentioned in the above background in view of the above defects.

[0004] The technical solution adopted by the utility model to solve its technical problems is as follows: A high-strength rotating shaft for machines, including a central shaft body and an outer shaft body. A limiting block is annularly arranged on the outer surface of the central shaft body, and the limiting block extends axially along the central shaft body. An installation hole matching the central shaft body is opened inside the outer shaft body, and a limiting groove matching the limiting block is annularly arranged on the inner wall of the installation hole. A positioning groove on the same central axis as the limiting block is annularly arranged on the outer surface of the outer shaft body. A connection hole is opened inside the positioning groove, and a fastening bolt is arranged inside the positioning groove. The fastening bolt passes through the connection hole and is threadedly connected with the limiting block. A connection strengthening component is arranged inside the limiting block, and clamping holes matching the connection strengthening component are opened on the inner walls on both sides of the limiting groove. When the fastening bolt is threadedly connected with the limiting block, the connection strengthening component is driven to form a lock with the clamping holes.

[0005] Further, the connection strengthening component includes a through hole, a clamping block, a sliding groove, a sliding block, and a spring. A fastening hole matching the fastening bolt is provided inside the limiting block. The through holes are symmetrically provided on both sides of the fastening hole. The through holes and the clamping holes are on the same central axis. The clamping block is arranged inside the through hole. The sliding groove is axially arranged inside the through hole along the through hole. The sliding block is arranged on the outer surface of the clamping block and is slidably connected with the sliding groove. A closing plate that shields the through hole is arranged on one side of the limiting block away from the fastening bolt. One side of the clamping block penetrates through the closing plate and extends to the outside. The spring is sleeved on the outer surface of the clamping block, with one end abutting against the sliding block and the other end abutting against the closing plate.

[0006] Further, one side of the clamping block abuts against the fastening bolt, and the other side is located inside the clamping hole.

[0007] Further, a strengthening member is arranged between adjacent limiting blocks. The strengthening member includes a first connecting portion, a second connecting portion, and an inclined portion. The first connecting portion and the second connecting portion are symmetrically arranged at both ends of the inclined portion. The first connecting portion is connected to the vertically arranged limiting block, the second connecting portion is connected to the horizontally arranged limiting block, and a triangular stable structure is formed between the inclined portion and the adjacent limiting blocks.

[0008] The beneficial effects of the present utility model are as follows:

[0009] Through the cooperative setting of the central shaft body, the outer shaft body, the limiting block, the mounting hole, the limiting groove, the positioning groove, the connecting hole, the fastening bolt, the connection strengthening component, and the clamping hole, the central shaft body is detachably connected to the outer shaft body through the limiting block, the mounting hole, and the limiting groove. When the outer surface of the outer shaft body is worn, the outer shaft body can be replaced separately without the need for overall replacement. Moreover, through the cooperation of the limiting block and the limiting groove, the integrity between the central shaft body and the outer shaft body is better. When the fastening bolt is connected to the limiting block, it will generate a driving force on the connection strengthening component, driving the connection strengthening component to form a lock with the clamping hole. Then, through their mutual cooperation, the connection between the limiting block, the central shaft body, and the outer shaft body is more firm and stable, further improving the integrity between the central shaft body and the outer shaft body. And through the disassembly of the fastening bolt, the connection strengthening component can be separated from the clamping hole, and its later maintenance operation is simple and convenient. Description of the Drawings

[0010] Through the following detailed description in conjunction with the drawings, the foregoing and other objects, features, and advantages of the present utility model will become apparent.

[0011] Figure 1 It is a front view cross-sectional view of the present utility model.

[0012] Figure 2 It is a side view top view of the present utility model.

[0013] Figure 3This is a sectional view of the limit block of the utility model.

[0014] Wherein: 1. Central shaft body; 101. Limit block; 102. Fastening hole; 2. Outer shaft body; 201. Mounting hole; 202. Limit groove; 203. Card hole; 3. Positioning groove; 301. Connecting hole; 4. Fastening bolt; 5. Connecting and strengthening assembly; 501. Through hole; 502. Card block; 503. Slide groove; 504. Slide block; 505. Spring; 506. Sealing plate; 6. Strengthening member; 601. First connecting portion; 602. Second connecting portion; 603. Inclined portion. Specific embodiments

[0015] The following further describes the present utility model with reference to the accompanying drawings.

[0016] Refer to Figures 1-3 As shown, a high-strength machine-use rotating shaft includes a central shaft body 1 and an outer shaft body 2. A limit block 101 is annularly arranged on the outer surface of the central shaft body 1. The limit block 101 extends axially along the central shaft body 1. Specifically, four limit blocks 101 are provided, and the four limit blocks 101 are equally divided in a circumferential manner on the outer surface of the central shaft body 1. An installation hole 201 matching the central shaft body 1 is opened inside the outer shaft body 2. A limit groove 202 matching the limit block 101 is annularly arranged on the inner wall of the installation hole 201. The limit block 101 is matched with the limit groove 202, so that the integrity during the rotation between the central shaft body 1 and the outer shaft body 2 is better, and when the outer surface of the outer shaft body 2 is worn, the outer shaft body 2 can be directly replaced without replacing the whole together with the central shaft body 1, effectively reducing the use cost.

[0017] A positioning groove 3 is annularly arranged on the outer surface of the outer shaft body 2 and is on the same central axis as the limiting block 101. A connecting hole 301 is formed inside the positioning groove 3. A fastening bolt 4 is arranged inside the positioning groove 3. The fastening bolt 4 passes through the connecting hole 301 and is in threaded connection with the limiting block 101. A plurality of the positioning grooves 3 and the connecting holes 301 are arranged along the axial direction of the outer shaft body 2. The fastening bolt 4 locks between the limiting block 101 and the limiting groove 202, so that a fixation is formed between the central shaft body 1 and the outer shaft body 2, making their connection more firm and the integrity better. A connection strengthening assembly 5 is arranged inside the limiting block 101. Card holes 203 matching the connection strengthening assembly 5 are formed on the inner walls on both sides of the limiting groove 202. When the fastening bolt 4 is in threaded connection with the limiting block 101, it drives the connection strengthening assembly 5 to lock with the card holes 203. When the fastening bolt 4 is connected to the limiting block 101, it generates a driving force on the connection strengthening assembly 5, driving the connection strengthening assembly 5 to lock with the card holes 203. Then, through their mutual cooperation, the connection between the limiting block 101, the central shaft body 1 and the outer shaft body 2 is made more firm and stable, further enhancing the integrity between the central shaft body 1 and the outer shaft body 2. Moreover, by disassembling the fastening bolt 4, the connection strengthening assembly 5 can be separated from the card holes 203, and the central shaft body 1 and the outer shaft body 2 can be separated. Its later maintenance operation is simple and convenient.

[0018] The connection strengthening component 5 includes a through hole 501, a clamping block 502, a sliding groove 503, a sliding block 504, and a spring 505. A fastening hole 102 matching the fastening bolt 4 is provided inside the limiting block 101. The through holes 501 are symmetrically arranged on both sides of the fastening hole 102. The through hole 501 and the clamping hole 203 are on the same central axis. The clamping block 502 is arranged inside the through hole 501. The sliding groove 503 is axially opened inside the through hole 501 along the axis of the through hole 501. The sliding block 504 is arranged on the outer surface of the clamping block 502, and the sliding block 504 is slidably connected with the sliding groove 503. A closing plate 506 that shields the through hole 501 is provided on one side of the limiting block 101 away from the fastening bolt 4. One side of the clamping block 502 penetrates through the closing plate 506 and extends to the outside. The spring 505 is sleeved on the outer surface of the clamping block 502, with one end abutting against the sliding block 504 and the other end abutting against the closing plate 506. The closing plate 506 is fixedly connected to the limiting block 101 by bolts, and the side wall of the closing plate 506 is flush with the side wall of the limiting block 101. A driving inclined surface is provided at the top of the clamping block 502 on the side close to the fastening bolt 4. When the fastening bolt 4 contacts the clamping block 502, it is convenient to form a driving force on the clamping block 502. When the fastening bolt 4 is threadedly connected with the fastening hole 102, a thrust is formed on the clamping block 502. The clamping block 502 moves along the sliding groove 503 towards the clamping hole 203 side through the sliding block 504 and enters the inside of the clamping hole 203. At the same time, the spring 505 is compressed to cause elastic deformation. One side of the clamping block 502 abuts against the fastening bolt 4, and the other side is located inside the clamping hole 203. And the reverse force always generated by the spring 505 causes the clamping block 502 to clamp the fastening bolt 4, making the connection between the fastening bolt 4 and the fastening hole 102 more stable. The cooperation between the clamping block 502 and the clamping hole 203 effectively limits the axial and radial directions of the outer shaft body 2 on the central shaft body 1, making its integrity better. Their mutual cooperation makes the connection between the outer shaft body 2 and the central shaft body 1 more firm and stable.

[0019] When separating the outer shaft body 2 from the central shaft body 1, only need to rotate the fastening bolt 4 to separate it from the fastening hole 102. The driving force on the clamping block 502 disappears. The spring 505 rebounds and drives the clamping block 502 to move towards the inside of the through hole 501 and separate from the clamping hole 203, then the outer shaft body 2 can be removed. Its operation is simple, and later maintenance and replacement are convenient.

[0020] A reinforcement member 6 is arranged between adjacent limit blocks 101, and the reinforcement member 6 includes a first connection portion 601, a second connection portion 602 and an inclined portion 603. The first connection portion 601 and the second connection portion 602 are symmetrically arranged at both ends of the inclined portion 603, and an obtuse angle is formed between the first connection portion 601, the second connection portion 602 and the inclined portion 603. The first connection portion 601 is connected to the vertically arranged limit block, and the second connection portion 602 is connected to the horizontally arranged limit block. A triangular stable structure is formed between the inclined portion 603 and the adjacent limit blocks 101, and one end of the inclined portion 603 is connected to the outer surface of the central axis body 2. The mounting hole 201 is provided with a receiving hole matching the reinforcement member 6. The reinforcement member 6 makes the integrity between the limit block 101 and the central axis body 1 better and the structural strength higher. When subjected to force, the force can be transmitted to various places through the reinforcement member 6 for resistance, thereby preventing the limit block 101 from being damaged.

[0021] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. High-strength machine rotating shaft, characterized in that: It includes a central shaft body (1) and an outer shaft body (2). A limiting block (101) is annularly arranged on the outer surface of the central shaft body (1). The limiting block (101) extends axially along the central shaft body (1). An installation hole (201) matching the central shaft body (1) is formed inside the outer shaft body (2). A limiting groove (202) matching the limiting block (101) is annularly arranged on the inner wall of the installation hole (201). A positioning groove (3) on the same central axis as the limiting block (101) is annularly arranged on the outer surface of the outer shaft body (2). A connection hole (301) is formed inside the positioning groove (3). A fastening bolt (4) is arranged inside the positioning groove (3). The fastening bolt (4) passes through the connection hole (301) and is threadedly connected to the limiting block (101). A connection strengthening component (5) is arranged inside the limiting block (101). Card holes (203) matching the connection strengthening component (5) are formed on the inner walls on both sides of the limiting groove (202). When the fastening bolt (4) is threadedly connected to the limiting block (101), the connection strengthening component (5) is driven to form a lock with the card holes (203).

2. The high-strength machine rotating shaft according to claim 1, characterized in that: The connection strengthening component (5) includes a through hole (501), a clamping block (502), a sliding groove (503), a sliding block (504), and a spring (505). A fastening hole (102) matching the fastening bolt (4) is formed inside the limiting block (101). The through holes (501) are symmetrically formed on both sides of the fastening hole (102). The through holes (501) and the card holes (203) are on the same central axis. The clamping block (502) is arranged inside the through hole (501). The sliding groove (503) is axially formed inside the through hole (501) along the through hole (501). The sliding block (504) is arranged on the outer surface of the clamping block (502), and the sliding block (504) is slidably connected to the sliding groove (503). A closing plate (506) that blocks the through hole (501) is arranged on one side of the limiting block (101) away from the fastening bolt (4). One side of the clamping block (502) penetrates through the closing plate (506) and extends to the outside. The spring (505) is sleeved on the outer surface of the clamping block (502), with one end abutted against the sliding block (504) and the other end abutted against the closing plate (506).

3. The high-strength machine rotating shaft according to claim 2, characterized in that: One side of the clamping block (502) abuts against the fastening bolt (4), and the other side is located inside the card hole (203).

4. The high-strength machine rotating shaft according to claim 1, wherein: A strengthening member (6) is arranged between adjacent limiting blocks (101). The strengthening member (6) includes a first connecting portion (601), a second connecting portion (602), and an inclined portion (603). The first connecting portion (601) and the second connecting portion (602) are symmetrically arranged at both ends of the inclined portion (603). The first connecting portion (601) is connected to the vertically arranged limiting block, the second connecting portion (602) is connected to the horizontally arranged limiting block, and the inclined portion (603) forms a triangular stable structure with the adjacent limiting blocks (101).

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