Self-tightness adjusting belt pulley suitable for double-layer vibrating screen

By designing a conical inner shaft hole and a tension sleeve structure on the double-layer vibrating screen pulley, adaptive tension adjustment is achieved, solving the problem of difficult-to-control pulley tension and improving the stability and service life of the equipment.

CN223602863UActive Publication Date: 2025-11-28YUNNAN KUNSTEEL GRP REFRACTORY MATERIAL CO LTD
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Patent Information

Application Number
CN202423085485.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-13
Publication Date
2025-11-28
Estimated Expiration
2034-12-13

AI Technical Summary

Technical Problem

The belt tension of existing double-layer vibrating screens is difficult to control during use, resulting in vibration and wear, short service life, and frequent maintenance.

Method used

Design a self-adjusting pulley, which adopts a tapered inner shaft hole and a tensioning bushing structure. It is formed into a T-shape by combining a limiting ring and a sleeve, and uses the tensioning gap to achieve self-adjustment and maintain the appropriate tension between the pulley and the belt.

Benefits of technology

It reduces pulley vibration, extends service life, reduces wear and power loss, and lowers maintenance frequency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The self-tightness adjusting belt pulley comprises a belt pulley body, an inner shaft hole of the belt pulley body is of a taper hole structure, the taper of the inner shaft hole is 1: 10-20, a tightness shaft sleeve is coaxially arranged in the inner shaft hole, and the outer wall of the tightness shaft sleeve is of a taper structure matched with the inner shaft hole. An inner hole of the elastic shaft sleeve is a straight hole; the elastic shaft sleeve is of a T-shaped structure formed by connecting and combining a limiting ring and a sleeve, and an elastic gap equal to the elastic shaft sleeve in length is axially formed in the elastic shaft sleeve. The belt pulley device is compact and simple in structure and convenient to use and install, the belt pulley and the belt are kept in proper tightness for normal operation through matching of the belt pulley and the elastic shaft sleeve, the shaking phenomenon of the belt pulley is reduced, excessive abrasion and power loss are avoided, the service life is prolonged, and the maintenance frequency is reduced.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of vibrating screen especially relates to a self-tightness adjusting pulley suitable for double-layer vibrating screen. BACKGROUND

[0002] The existing double-layer vibrating screen big pulley installation usually is directly fixed to the rotation axis and uses, is influenced by the vibration factor, finds that the tightness of pulley is not easy to control in use, after long time use, the pulley will appear the shaking phenomenon, leads to the pulley, rotation axis wear and tear fast, service life is short, is not favorable to the stable operation of double-layer vibrating screen. Therefore needs frequent maintenance, replaces the worn pulley, or adjusts the tightness of pulley and belt, to guarantee the stable operation of equipment. CONTENT OF UTILITY MODEL

[0003] The utility model provides a self-tightness adjusting pulley suitable for double-layer vibrating screen.

[0004] The utility model discloses a following technical scheme realizes: including pulley, the inner shaft hole of pulley sets up the structure of taper hole, and the taper of inner shaft hole is 1:10~20, and sets up the tightness shaft sleeve coaxially in the inner shaft hole, the outer wall of tightness shaft sleeve sets up the taper structure of with the inner shaft hole adaptation, and the inner hole of tightness shaft sleeve is straight hole.

[0005] The tightness shaft sleeve is combined into T-shaped structure by the limiting ring and the sleeve pipe connection, and the tightness gap of equal length is arranged axially on the tightness shaft sleeve.

[0006] The utility model has the advantages and beneficial effects that: compact structure, simple, convenient to use and install, the cooperation of pulley and tightness shaft sleeve makes the pulley and belt keep proper tightness to run normally, reduces the shaking phenomenon of pulley, avoids excessive wear and tear and power loss, prolongs the service life, and reduces the maintenance frequency. DRAWING EXPLANATION

[0007] Figure 1 It is the structure schematic diagram of the utility model;

[0008] Figure 2 It is the left view structure schematic diagram of the utility model;

[0009] Figure 3 It is the exploded structure schematic diagram of the utility model;

[0010] Figure 4 It is the structure schematic diagram of tightness shaft sleeve;

[0011] Figure 5 It is the right view structure schematic diagram of tightness shaft sleeve;

[0012] Figure 6 It is the three-dimensional structure schematic diagram of tightness shaft sleeve.

[0013] The figure mark: 1~pulley, 2~inner shaft hole, 3~keyway, 4~limit ring, 5~sleeve, 6~loose clearance, 7~key hole, 8~screw hole, 9~screw. DETAILED DESCRIPTION

[0014] In order for those skilled in the art to better understand the technical scheme of the present application, the specific embodiments thereof will be described in detail below with reference to the accompanying drawings.

[0015] As Figures 1-5 The self-loose adjusting pulley suitable for double-layer vibrating screen shown in the figure, including pulley 1, the inner shaft hole 2 of the pulley 1 is set as a taper hole structure, and the taper of the inner shaft hole 2 is 1:10~20, and a loose shaft sleeve is coaxially arranged in the inner shaft hole 2, the outer wall of the loose shaft sleeve is set as a taper structure matched with the inner shaft hole 2, and the inner hole of the loose shaft sleeve is a straight hole to facilitate sleeving on the rotating shaft.

[0016] The inner shaft hole 2 is provided with a keyway 3 in the middle, and the loose shaft sleeve is provided with a key hole 7 corresponding to the keyway 3, and is fixed to the rotating shaft in cooperation with the spline.

[0017] The loose shaft sleeve is connected and combined as a T-shaped structure by a limit ring 4 and a sleeve 5, and a loose clearance 6 equal in length to the loose shaft sleeve is arranged axially on the loose shaft sleeve.

[0018] The width of the loose clearance 6 is 3~5mm.

[0019] At least one through hole is provided on the limit ring 4 of the loose shaft sleeve.

[0020] At least one screw hole 8 is provided on the end of the inner shaft hole 2 of the pulley 1, when installed and used, the through hole on the limit ring 4 is fixedly connected with the screw hole 8 by a screw 9, and then the pulley 1 provided with the loose shaft sleeve is installed on the rotating shaft, at this time, the force on the loose shaft sleeve will make the loose clearance 6 shrink, and be fixed by spline. In the running process, when the pulley 1 is worn, the loose clearance 6 will expand, so that the loose shaft sleeve is tightly matched with the taper structure of the inner shaft hole 2 of the pulley 1, and the tight relationship between the loose shaft sleeve and the pulley 1 is self-adaptively adjusted, so that the pulley 1 and the belt maintain appropriate tightness to run normally, and reduce the shaking phenomenon of the pulley 1.

[0021] The material of the loose shaft sleeve is copper, bronze or steel.

Claims

1. A self-tensioning adjustable pulley suitable for use in a double-deck vibrating screen, comprising a pulley (1), characterized in that: The inner shaft hole (2) of the belt pulley (1) is provided in a conical hole structure, and the taper of the inner shaft hole (2) is 1:10-20, and a tension shaft sleeve is coaxially arranged in the inner shaft hole (2), the outer wall of the tension shaft sleeve is provided in a conical structure matched with the inner shaft hole (2), and the inner hole of the tension shaft sleeve is a straight hole.

2. The self-tensioning adjustable pulley suitable for use in a double-deck vibrating screen according to claim 1, characterized in that: The inner shaft hole (2) is provided with a key groove (3) in the middle, and a key hole (7) is arranged on the tension shaft sleeve corresponding to the key groove (3).

3. The self-tensioning adjustable pulley suitable for use in a double-deck vibrating screen according to claim 1, wherein: The tension shaft sleeve is connected and combined in a T-shaped structure by a limiting ring (4) and a sleeve pipe (5), and a tension gap (6) with the same length as the tension shaft sleeve is arranged axially on the tension shaft sleeve.

4. The self-tensioning adjustable pulley suitable for use in a double-deck vibrating screen according to claim 3, wherein: The width of the tension gap (6) is 3-5 mm.

5. The self-tensioning adjustable pulley suitable for use in a double-deck vibrating screen according to claim 3, wherein: At least one through hole is arranged on the limiting ring (4) of the tension shaft sleeve.

6. The self-tensioning adjustable pulley suitable for use in a double-deck vibrating screen of claim 1, wherein: At least one screw hole (8) is arranged on the end of the inner shaft hole (2) of the belt pulley (1).

7. The self-tensioning adjustable pulley suitable for use in a double-deck vibrating screen of claim 1, wherein: The material of the tension shaft sleeve is copper, bronze or steel.