Anti-overturning pulley

Abstract

The anti-overturning pulley is composed of a shell, a turntable and a rotating shaft, the turntable is installed on the rotating shaft of the shell, a rope penetrating ring is arranged on the upper portion of the front face of the shell, a clamping column is arranged on the top of the shell, and a plurality of clamping protrusions are evenly distributed on one side of the clamping column. The pulley is ingenious and reasonable in design, an integral connecting structure of a plurality of pulleys is achieved by arranging the transverse rope penetrating rings, the problem that the pulleys turn over in strong wind weather is solved, and stable operation of the agricultural greenhouse tuyere is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of accessories for ventilating agricultural greenhouses, and particularly relates to an anti-overturning pulley. Background Art

[0002] At present, vegetable farmers mainly adjust the temperature inside the greenhouse by controlling the opening width of the ventilation openings. To improve the ventilation effect, in addition to opening ventilation windows at the bottom of the greenhouse, ventilation windows are also opened at the top of the greenhouse. It is relatively easy to open the ventilation openings at the bottom and adjust the opening width. Just roll up and lower the greenhouse film from the bottom edge. Generally, the design for opening ventilation openings at the top of the greenhouse is to divide the greenhouse film into two parts. The front greenhouse film is laid on the front side shelf of the greenhouse, and the top greenhouse film is laid on the top of the greenhouse. The width of the ventilation opening is adjusted by pulling the top greenhouse film to adjust the temperature of the greenhouse. Because it is at the top of the greenhouse, manual operation is not easy to achieve. Generally, multiple pulleys and pulley ropes are used. The pulleys are connected to the greenhouse film pressing ropes. When opening and closing the ventilation opening, only need to pull the pulley rope, and the pulley drives the pressing rope to drive the greenhouse film to rise and fall. However, during the use of the pulleys supporting the existing agricultural greenhouses, when encountering strong winds, the pulleys are prone to overturning, resulting in the winding and knotting of the pressing ropes and pulley ropes, causing the pulleys to be unable to rise and fall normally. Content of the Utility Model

[0003] The utility model provides an anti-overturning pulley to solve the problem that the pulleys supporting the existing agricultural greenhouses are prone to overturning, resulting in the winding and knotting of the pressing ropes and pulley ropes.

[0004] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0005] An anti-overturning pulley is composed of a housing, a turntable and a rotating shaft. The turntable is installed on the rotating shaft of the housing. A rope-passing ring is arranged at the upper part of the front of the housing, and a clamping column is arranged at the top of the housing. A number of clamping protrusions are evenly distributed on one side of the clamping column.

[0006] The working principle of the utility model is as follows: First, the clamping columns at the tops of multiple anti-overturning pulleys are respectively fixedly installed on the corresponding pressing ropes at the ventilation openings. A rope is passed through the rope-passing rings above all the pulleys, so as to realize the horizontal connection of all the pulleys. In this way, multiple pulleys form an integral horizontally connected whole. In this way, the pulleys will not overturn when the wind blows, and the pressing ropes and pulley ropes will not be twisted. When opening and closing the ventilation opening, only need to pull the pulley rope to drive the pulley to rise and fall, and the pulley can drive the pressing rope to realize the rising and falling of the greenhouse film at the ventilation opening of the greenhouse.

[0007] The utility model is ingeniously and reasonably designed. Through the arrangement of the horizontal rope-passing rings, the integral connection structure of multiple pulleys is realized, avoiding the problem of pulley overturning in strong wind weather, and effectively ensuring the stable operation of the ventilation openings of agricultural greenhouses. Description of the Drawings

[0008] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0009] Figure 1 is a schematic structural view of the present utility model;

[0010] Figure 2 is a schematic side view of the present utility model.

[0011] In the figure, 1 is the housing, 2 is the turntable, 3 is the rotating shaft, 4 is the rope-passing ring, 5 is the clamping post, and 6 is the clamping protrusion. Specific embodiments

[0012] As Figure 1 and Figure 2 shown, an anti-tipping pulley is composed of a housing 1, a turntable 2, and a rotating shaft 3. The turntable 2 is installed on the rotating shaft 3 of the housing 1. A rope-passing ring 4 is provided at the upper part of the front surface of the housing 1, and a clamping post 5 is arranged at the top of the housing 1. A plurality of clamping protrusions 6 are evenly distributed on one side of the clamping post 5.

[0013] The working principle of the present utility model is as follows: First, the clamping posts at the tops of multiple anti-tipping pulleys are respectively fixedly installed on the corresponding pressure film ropes at the air inlets. A rope is passed through the rope-passing rings above all the pulleys, so as to realize the horizontal connection of all the pulleys. In this way, multiple pulleys form an integral horizontally connected body. In this way, the pulleys will not tip over when the wind blows, and the pressure film ropes and the pulley ropes will not be twisted. When opening and closing the air inlet, only need to pull the pulley rope to drive the pulley to lift and lower, and the pulley can drive the pressure film rope to realize the lifting and lowering of the greenhouse film at the air inlet.

[0014] The present utility model is ingeniously and reasonably designed. By setting the horizontal rope-passing rings, the integral connection structure of multiple pulleys is realized, avoiding the problem of pulley tipping over in strong wind weather, and effectively ensuring the stable operation of the greenhouse air inlet.

Claims

1. The anti-flip pulley is composed of a housing, a turntable and a rotating shaft. The turntable is installed on the rotating shaft of the housing. Its characteristics are A rope threading ring is arranged on the upper part of the front surface of the shell body, a clamping column is arranged on the top of the shell body, and a plurality of clamping protrusions are evenly distributed on one side of the clamping column.

Images