CN104627782A - An adjustable and balanced floating skywheel device for a multi-rope winding hoist - Google Patents

Abstract

The invention discloses a balance-adjustable floating head sheave device for a multi-rope winding type hoist, which comprises two groups of floating head sheave devices which are arranged in parallel, wherein each group of floating head sheave devices comprises a floating head sheave, a U-shaped frame, an oil cylinder device, a linear guide rail and a bracket, the floating head sheave is arranged between two side walls of the U-shaped frame through a connecting shaft which is arranged in a central hole of the floating head sheave in a penetrating way, and the bottom of the U-shaped frame is connected with the oil cylinder device. The two groups of floating head sheave devices are respectively connected with a hydraulic station, do not interfere with each other, can independently adjust the oil cylinders in the two groups of floating head sheaves, adjust the positions of the floating head sheaves by adjusting the oil pressure of the oil cylinders, and further adjust the tension of the steel wire rope wound on the floating head sheaves; meanwhile, the adjustment is convenient, rapid and accurate, and the working efficiency is greatly improved.

Description

An adjustable and balanced floating skywheel device for a multi-rope winding hoist

technical field

The invention belongs to the technical field of mine hoists, and in particular relates to an adjustable and balanced floating skywheel device for a multi-rope winding hoist.

Background technique

The multi-rope winding hoist is suitable for ultra-deep well hoisting. Its structure is shown in Figure 1. Generally, there are two steel wire ropes 1 with a hoisting container 2. Since the two steel wire ropes 1 have the same hoisting container 2, each For various reasons (such as drum processing error, wire rope diameter difference, wire rope modulus difference, excessive movement between wire rope layers, etc.), the tension of the two wire ropes 1 will be unbalanced, and measures must be taken to minimize the unbalanced difference. value.

In order to reduce the tension imbalance difference between the two steel wire ropes, the method adopted by the multi-rope winding hoist is to install a floating movable pulley above the lifting container, because the floating movable pulley must follow the rope-diameter ratio D/d (D refers to floating The diameter of the movable pulley, d refers to the diameter of the wire rope), the large diameter and heavy weight have to reduce the payload on the wire rope, so the scheme of using the movable pulley has great defects.

Contents of the invention

In order to solve the problem of unbalanced tension between the two wire ropes in the existing multi-rope winding hoist, the object of the present invention is to provide a multi-rope winding hoist with an adjustable floating sky wheel device. Adjust the tension of each steel wire rope individually by adjusting the position of the pulley, so that the tension of the two steel wire ropes can be balanced.

In order to achieve the above-mentioned purpose of the invention, this paper adopts the following technical solutions:

An adjustable and balanced floating sky wheel device for a multi-rope winding hoist, which includes two sets of floating sky wheel devices arranged in parallel, and each group of floating sky wheel devices includes a floating sky wheel, a U-shaped frame, an oil cylinder device, and a linear guide rail And the bracket, the floating sky wheel is installed between the two side walls of the U-shaped frame through the connecting shaft passing through the central hole, and the bottom of the U-shaped frame is connected with an oil cylinder device.

Further, each group of floating sky wheel device also includes a bracket, the two side plates of the bracket are respectively located on the outer sides of the two side walls of the U-shaped frame, and linear guide rails are respectively arranged on the inner side walls of the two side plates of the bracket, and the U-shaped frame A slider is respectively fixed on the outer sides of the two side walls of the utility model, and the two sliders are respectively located in the guide rails on the corresponding sides.

Further, the oil cylinder device is composed of an oil cylinder, a displacement sensor and an oil pressure sensor.

Further, a hydraulic station for driving the oil cylinder is externally connected to the oil cylinder device.

Owing to adopting above-mentioned technical scheme, the present invention has the following advantages:

The present invention has simple overall structure and reasonable design. The two groups of floating sky wheel devices are respectively connected to a hydraulic station without interfering with each other. The oil cylinders in the two groups of floating sky wheels can be adjusted independently, and the position of the floating sky wheels can be adjusted by adjusting the oil pressure of the oil cylinders. , and then adjust the tension of the wire rope wound on the floating sky wheel; at the same time, the adjustment is convenient, fast and accurate, which greatly improves the work efficiency.

Description of drawings

Fig. 1 is the structural representation of existing multi-rope winding hoist;

Fig. 2 is a structural representation of the present invention;

In the figure: 1-floating sky wheel; 2-U-shaped frame; 3-oil cylinder device; 4-support; 5-linear guide rail; 6-wire rope; 7-lifting container.

Detailed ways

The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 2, a multi-rope winding hoist with an adjustable and balanced floating sky wheel device includes two sets of floating sky wheel devices arranged in parallel, and each group of floating sky wheel devices includes floating sky wheels 1, U-shaped Frame 2, oil cylinder device 3, linear guide rail 5 and bracket 4, the floating wheel 1 is installed between the two side walls of the U-shaped frame 2 through the connecting shaft passing through its central hole, and the bottom of the U-shaped frame 2 is connected with an oil cylinder device 3.

Each group of floating sky wheel device also includes a support 4, the two side plates of the support 4 are respectively located on the outside of the two side walls of the U-shaped frame 2, and the inner side walls of the two side plates of the support 4 are respectively provided with linear guide rails 5, U A sliding block is respectively fixed on the outer sides of the two side walls of the frame, and the two sliding blocks are respectively located in the linear guide rails on the corresponding sides.

The oil cylinder device 3 is composed of an oil cylinder, a displacement sensor and an oil pressure sensor.

The oil cylinder device 3 is externally connected with a hydraulic station for driving the action of the oil cylinder.

The slide block and the side wall of the U-shaped frame can be set as an integral structure, or the side wall of the U-shaped frame can be processed into a structure suitable for the linear guide rail.

The adjustment principle of the present invention is:

The two oil cylinder devices in the present invention are respectively externally connected to a hydraulic station, and each oil cylinder device is respectively driven by the two hydraulic stations, and the oil circuit of the hydraulic station connected to each oil cylinder device is independent, and the oil pressure of each oil circuit of the hydraulic station is independent. Adjusted by a separate proportional valve. If the oil pressure detected by the oil cylinder device is low, it means that the tension of the steel wire rope on the corresponding floating sky wheel is too small. The oil pressure detected by the device is too high, indicating that the tension of the steel wire rope on the corresponding floating sky wheel is too high, and then the oil pressure is lowered through the proportional valve, and the extension of the oil cylinder is reduced, thereby reducing the tension on the wire rope; through this The adjustment method allows the oil cylinder device to be adjusted in real time, so that the tension of the two steel wire ropes respectively wound on each floating sky wheel can be kept in balance.

It should be noted that the oil cylinder device used in the present invention is a molded product integrating an oil cylinder, a displacement sensor and an oil pressure sensor. The linear guide rail adopts the existing structure with steel balls inside, the friction between the slider and the guide rail is small, and besides linear motion, it can also bear loads in other directions.

Claims (4)

1. the floating head sheave apparatus of a multi-rope winding type gig adjustable balance, it comprises two groups of floating head sheave apparatus be arranged in parallel, it is characterized in that: often the floating head sheave apparatus of group comprises floating head sheave, U-shaped framework, cylinder apparatus, line slideway and support, head sheave of floating is arranged on by the adapter shaft worn in its centre hole between the two side of U-shaped framework, and the bottom of U-shaped framework is connected with cylinder apparatus.

2. the floating head sheave apparatus of multi-rope winding type gig adjustable balance according to claim 1, it is characterized in that: often the floating head sheave apparatus of group also includes support, the biside plate of support lays respectively at the outside of the two side of U-shaped framework, and line slideway is respectively arranged with on the madial wall of support biside plate, the outside of the two side of U-shaped framework is installed with a slide block respectively, and two slide blocks lay respectively in the guide rail of respective side.

3. the floating head sheave apparatus of multi-rope winding type gig adjustable balance according to claim 1, is characterized in that: described cylinder apparatus is made up of oil cylinder, displacement pickup and oil pressure sensor.

4. the floating head sheave apparatus of multi-rope winding type gig adjustable balance according to claim 1, is characterized in that: described cylinder apparatus is circumscribed with the Hydraulic Station for driving cylinder action.