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High-friction-coefficient traction wheel for elevator

A technology with high friction coefficient and coefficient of friction, applied in elevators, belts/chains/gears, portable hoisting devices, etc. The effect of traction capacity

Inactive Publication Date: 2018-09-07
YUNGTAY ELEVATOR EQUIP CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The equivalent coefficient is related to the groove type. If you want to increase the equivalent coefficient, you must increase the notch angle or reduce the opening angle. According to the calculation in the appendix of GB7588-2003, this measure will have a negative impact on the life of the wire rope.

Method used

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  • High-friction-coefficient traction wheel for elevator
  • High-friction-coefficient traction wheel for elevator
  • High-friction-coefficient traction wheel for elevator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 ( Figure 1-Figure 3 )

[0037] The reinforced connection structure is composed of several sunken holes 500 arranged on the outer peripheral surface 200 of the traction sheave base 100 and rubber or polyurethane extruded into the holes 500 with a relatively high coefficient of friction in contact with the traction sheave base 100 . Because the coating layer 300 is made of rubber or polyurethane and has certain elasticity, when the coating layer is squeezed by 300, the rubber or polyurethane fills in the sinking hole 500, forming a relatively firm mechanical connection with the traction sheave base 100, so that When the traction wheel provides a relatively large traction force, the cladding layer 300 will not fall off from the substrate or be peeled off.

Embodiment 2

[0038] Example 2 ( Figure 4-Figure 7 )

[0039] The reinforced connection structure is composed of intersecting thin grooves 700 arranged on the outer peripheral surface 200 of the traction sheave base 100 and rubber or polyurethane extruded into the intersecting thin grooves 700 with a relatively high coefficient of friction in contact with the traction sheave base 100 . When the cladding layer 300 is extruded, rubber or polyurethane fills the intersecting thin grooves 700, forming a relatively firm mechanical connection with the traction sheave base 100, so that the cladding layer 300 can provide a large traction force when the traction sheave Will not fall off the substrate, peel off.

[0040] It should be noted that embodiment 1 and embodiment 2 describe only two specific embodiment structures of the reinforced connection structure in the present invention, which can also have various structural changes. For example, in embodiment 1, blind grooves can be used instead of si...

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Abstract

The invention discloses a high-friction-coefficient traction wheel for an elevator. The high-friction-coefficient traction wheel comprises a traction wheel base body, and is characterized in that theouter peripheral surface of the traction wheel base body is provided with a coating layer made of a material which has a relatively large friction coefficient during contact with the traction wheel base body in an extruded mode, a plurality of annular traction rope grooves are formed on the outer peripheral surface of the coating layer at intervals in an arrayed mode along the axis direction of the traction wheel base body, and an enhanced connecting structure is arranged between the inner peripheral surface of the coating layer and the outer peripheral surface of the traction wheel base body.According to the high-friction-coefficient traction wheel, the coating layer is arranged on the outer peripheral surface of the traction wheel base body so that the friction coefficient of the traction wheel can be increased during contact with a steel wire rope and the traction capacity can be improved, and the coating layer is made of the material with relatively large friction coefficient during contact with the traction wheel base body; and meanwhile, the enhanced connecting structure is additionally arranged between the inner peripheral surface of the coating layer and the outer peripheral surface of the traction wheel base body, and therefore the binding force between the coating layer and the traction wheel base body is guaranteed.

Description

technical field [0001] The invention relates to the technical field of elevator traction wheels, in particular to a high friction coefficient traction wheel for elevators. Background technique [0002] Generally speaking, the traction sheave is cast by QT600 or QT700, and is machined into a V-shaped or U-shaped groove. It relies on the contact between the rope groove and the wire rope to generate friction and is used for elevator traction. There are currently some patents to improve the traction sheave, the purpose is mainly to improve the wear of the traction sheave. [0003] It can be seen from the search that the Chinese invention patent with the patent application number of 201520140455.3 discloses a traction sheave, which is provided with replaceable two-section semicircular liners (such as rubber) on the traction sheave body, and through The pressing pieces on both sides are fixed to improve the wear of the wire rope. But this arrangement obviously can't satisfy the ...

Claims

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Application Information

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IPC IPC(8): B66B11/08F16H55/50F16H55/38F16H55/48
CPCB66B11/08F16H55/38F16H55/48F16H55/50
Inventor 邹志文许志华
Owner YUNGTAY ELEVATOR EQUIP CHINA
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