CN210770126U

CN210770126U - Belt pulley fixing structure

Info

Publication number: CN210770126U
Application number: CN201921748077.1U
Authority: CN
Inventors: 梁桂才; 杨劲松; 郑春风
Original assignee: Dongguan Puxiangrui Cnc Electrical And Mechanical Technology Co ltd
Current assignee: Dongguan Puxiangrui Cnc Electrical And Mechanical Technology Co ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-06-16
Anticipated expiration: 2029-10-18

Abstract

The utility model relates to a belt pulley fixed knot constructs, including belt pulley, retaining member and pivot, the both ends face of belt pulley is equipped with first projection and second projection respectively, first projection and second projection are the interior logical shaft hole that is equipped with, the pivot is worn to establish in the shaft hole, the retaining member cover is established on first projection, the retaining member includes locking ring and screw, the locking ring is equipped with the hole, the lateral wall of locking ring is equipped with open through groove, open through groove communicates with each other with the hole, the both sides of open through groove are equipped with screw mounting hole and screw hole respectively, the screw is worn to establish in screw mounting hole and screw hole, the diameter size of screw adjustment hole is rotated, make first projection clamp tight pivot, the utility model discloses simple structure, convenient assembling, make first projection clamp tight pivot thereby make belt pulley and pivot locking connection through the retaining member, need not to process the keyway on belt pulley and pivot, it is convenient to make, and dynamic balance, relative vibration can not take place between belt pulley and the pivot, installs the stability that can improve the lathe operation in cutting machine.

Description

Belt pulley fixing structure

Technical Field

The utility model relates to a metal cutting machine tool spare part field indicates a belt pulley fixed knot constructs especially.

Background

The fixing mode of the belt pulley and the rotating shaft of the existing cutting machine tool generally adopts flat key fixing and nut clamping, and the fixing mode has the following defects:

1. key grooves need to be machined on the shaft and the belt pulley, and threads used for pressing need to be machined. The processing difficulty of the key slot is relatively increased, and the key slot has great influence on the strength of the shaft;

2. the key actually fits into the keyway, typically with a clearance or interference. When the two are in clearance fit, a reverse clearance problem exists; when the two are in interference fit, the installation and the disassembly are difficult;

3. due to the existence of the key and the key slot, the dynamic balance is usually poor, and the working stability of the chip cutting machine tool is easily influenced;

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a simple, firm in connection's of assembly belt pulley fixed knot constructs.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a belt pulley fixed knot constructs, includes belt pulley, retaining member and pivot, the both ends face of belt pulley is equipped with first projection and second projection respectively, first projection and second projection expert in are equipped with the shaft hole, the pivot is worn to establish in the shaft hole, the retaining member cover is established on first projection, the retaining member includes locking ring and screw, the locking ring is equipped with the hole, and the lateral wall of locking ring is equipped with the open groove, the open groove communicates with each other with the hole, the both sides that the open groove led to the groove are equipped with mounting screw hole and screw hole respectively, the screw is worn to establish in mounting screw hole and screw hole, rotates the diameter size in screw adjustment hole, makes the tight pivot of first projection clamp.

Preferably, the diameter of the first boss is smaller than the diameter of the second boss.

Preferably, the bore diameter of the shaft hole is not smaller than the diameter of the rotating shaft.

The beneficial effects of the utility model reside in that: the utility model discloses simple structure, convenient assembling makes thereby the tight pivot of first projection clamp make belt pulley and pivot locking connection through the retaining member, need not to process the keyway in belt pulley and pivot, and it is convenient to make, just the utility model discloses dynamic balance is good, can not take place relative vibration between belt pulley and the pivot, installs the stability that can improve the lathe operation in cutting machine.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a perspective view of the pulley.

FIG. 4 is a cross-sectional view of a pulley.

Fig. 5 is a perspective view of the locking ring.

Figure 6 is a plan view of the locking ring.

Fig. 7 is a sectional view a-a of fig. 6.

Description of reference numerals: 1. a belt pulley; 11. a hub; 12. a first convex column; 13. a second convex column; 14. a shaft hole; 2. locking a ring; 21. an inner bore; 22. a through groove is opened; 23. a screw mounting hole; 24. a threaded hole; 3. a screw; 4. a rotating shaft.

Detailed Description

Referring to fig. 1-7, the present invention relates to a belt pulley 1 fixing structure, including a belt pulley 1, a locking member and a rotating shaft 4, wherein the belt pulley 1 includes a hub 11, the hub 11 is a gear structure, two end surfaces of the hub 11 are respectively provided with a first protruding column 12 and a second protruding column 13, a diameter of the first protruding column 12 is smaller than a diameter of the second protruding column 13, the first protruding column 12 and the second protruding column 13 are internally provided with a shaft hole 14 having an equal diameter, the first protruding column 12 is a thin-wall section of the shaft hole 14, the diameter of the shaft hole 14 is not smaller than the diameter of the rotating shaft 4, the rotating shaft 4 is inserted into the shaft hole 14, the locking member includes a locking ring 2 and a screw 3, the locking ring 2 is sleeved on the first protruding column 12, the locking ring 2 is provided with an inner hole 21, a side wall of the locking ring 2 is provided with an open through groove 22 communicated with the inner hole 21, two sides of the open through groove 22 are respectively provided with a threaded hole, the screw 3 is arranged in the mounting hole 23 and the threaded hole 24 of the screw 3 in a penetrating way, the size of the inner hole 21 can be changed by rotating the screw 3,

the rotating shaft 4 is arranged in the shaft hole 14 in a penetrating mode, the second convex column 13 and the hub 11 center the rotating shaft 4, the screw 3 is rotated, the opening through groove 22 is reduced, the inner hole 21 of the locking ring 2 is reduced, the first convex column 12 is deformed and clamped on the rotating shaft 4, and therefore the belt pulley 1 is in locking connection with the rotating shaft 4; when the rotating screw 3 expands the open through groove 22, the diameter of the inner hole 21 is increased, and the belt pulley 1 is generally made of metal, so that the first convex column 12 and the rotating shaft 4 are loosened by using the elasticity of the metal, and the belt pulley 1 and the rotating shaft 4 can be detached conveniently.

The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.

Claims

1. The utility model provides a belt pulley fixed knot constructs which characterized in that: including belt pulley, retaining member and pivot, the both ends face of belt pulley is equipped with first projection and second projection respectively, first projection leads to in with the second projection and is equipped with the shaft hole, the pivot is worn to establish in the shaft hole, the retaining member cover is established on first projection, the retaining member includes locking ring and screw, the locking ring is equipped with the hole, and the lateral wall of locking ring is equipped with the open groove, the open groove communicates with each other with the hole, the both sides that the open groove led to the groove are equipped with screw mounting hole and screw hole respectively, the screw is worn to establish in screw mounting hole and screw hole, rotates the diameter size of screw adjustment hole, makes the tight pivot of first projection clamp.

2. The pulley fixing structure according to claim 1, wherein: the diameter of the first convex column is smaller than that of the second convex column.

3. The pulley fixing structure according to claim 1, wherein: the aperture of the shaft hole is not smaller than the diameter of the rotating shaft.