WO2023142117A1 - Reel with variable diameter - Google Patents

Abstract

A reel with a variable diameter, comprising a first expansion support part (11) and a second expansion support part (12) which are movably connected by means of a pressure adjustment part (3). The pressure adjustment part (3) further comprises an internal chamber (4) with a variable volume, a substance in the chamber being a working medium (5). A volume change of the chamber is caused by physical and chemical changes of the working medium (5), so that a relative distance between the first expansion support part (11) and the second expansion support part (12) is changed. Without personnel, equipment or energy other than the present mechanism, the reel expands as required by means of a change of an environment where the reel is located so as to achieve an effect of tensioning a rope on the reel.

Description

A reel with variable shaft diameter technical field

The invention belongs to the field of expansion shafts, in particular to a reel that can independently adjust the diameter of the shaft.

Background technique

Traditionally, motors, manpower, etc. are generally used as power to rotate the reel for wire take-up and pay-off. There are certain technical problems in the traditional method. Electric motors powered by batteries or cables have complex structures and are easily damaged by water ingress in underwater environments. It is difficult to automatically tighten the rope wound on the reel in an environment such as underground, seabed, sewer, etc. that is not suitable for personnel activities or the electromagnetic environment is complex, and it is difficult to use electromagnetic remote control or manual operation by personnel.

Contents of the invention

The invention provides a reel that can independently adjust the diameter of the reel, and the diameter of the reel is adjusted by fluid pressure to realize a mechanism for tightening or loosening the ropes wound on the reel.

A reel with a variable shaft diameter, including a first expansion support part 11 and a second expansion support part 12 that are flexibly connected through a pressure adjustment part 3, and the pressure adjustment part 3 also includes an internal cavity 4 with a variable volume, the cavity The substance in the chamber is the working medium 5, and the physical and chemical changes of the working medium 5 cause the volume of the cavity to change, so that the relative distance between the first expansion support part 11 and the second expansion support part 12 changes.

Preferably, the pressure regulating part 3 is a cylindrical piston structure.

Preferably, the working medium 5 is a material that undergoes phase change under different temperatures and pressures.

Preferably, the working medium 5 is a composition of an acidic substance with an acidity stronger than carbonic acid and calcium carbonate.

As a preference, the pressure regulating part 3 is also provided with a pressure limiting valve 32, the pressure limiting valve is located on the cavity wall of the internal cavity 4, when the pressure of the internal cavity 4 is too large, the pressure limiting valve is opened to make the internal cavity 4 and the The external environment is connected to prevent the overall structure of the device from being damaged.

Preferably, the pressure regulating part 3 is further provided with a first limiter 31, and when the volume of the internal cavity reaches a certain value, the volume of the internal cavity will no longer increase.

Preferably, a rope guide groove 2 is provided on the expansion supporting part, and the rope on the reel is wound on the reel through the rope guide groove 2 .

Preferably, the rope guide groove 2 includes a pulley structure for reducing the frictional resistance between the rope and the reel.

As preferably, the reel is also provided with a second limiter 33, and the ends of the second limiter are respectively connected with the first supporting part and the second supporting part, so that the first and second supporting parts are restricted from approaching each other, preventing The rope on the reel suddenly loosened.

Preferably, the pressure regulating part 3 includes two or more cylindrical piston structures.

The technical effect of the present invention: without using personnel, equipment and energy other than the mechanism, the change of the environment where the reel is located causes the reel to expand as required, thereby achieving the effect of tightening the rope on the reel.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the specific embodiments or prior art. Some specific embodiments of the invention are described in detail in a non-limiting manner. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the attached picture:

FIG. 1 is a schematic structural view of a reel with a variable shaft diameter.

Fig. 2 is a schematic diagram of the structure of a reel with a variable shaft diameter when it cooperates with a rope.

Fig. 3 is a schematic structural view of a reel with a variable shaft diameter when the working medium is a combination of acidic substances and calcium carbonate.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

A reel with a variable shaft diameter, including a first expansion support part 11 and a second expansion support part 12 that are flexibly connected through a pressure adjustment part 3, and the pressure adjustment part 3 also includes an internal cavity 4 with a variable volume, the cavity The substance in the medium is the working medium 5, and the physical or chemical changes of the working medium 5 cause the volume of the cavity to change, which in turn can drive the support part to change, so that the relative distance between the first expansion support part 11 and the second expansion support part 12 changes , when the relative distance of the supporting parts changes, the shaft diameter size of the reel will change, and the rope on the reel will be stretched or loosened accordingly.

The shape of the expansion support part can be various, and the shape of the first expansion support part and the second expansion support part can be different, and the shape only needs to support the rope wound on it, preferably the shape of the expansion support part can be a strip, The beneficial effect of the strip is that according to the needs of the actual application of the reel, ropes of different turns can be wound on it. When the number of ropes wound on it is n, the length of the shaft diameter of the reel per expansion distance s can cause the rope The expansion distance is 2ns, and the amplification effect is obvious, so the strip-shaped expansion support part is very efficient when tightening the rope.

The factors that cause the change of the shaft diameter of the reel are the external conditions. Take the pressure medium as an example of a material that undergoes phase change at different temperatures and pressures. Once the environment of the reel changes from the normal environment to a relatively high temperature environment such as industrial waste water. The phase-change material will change from liquid or solid to gaseous state. At this time, the volume of the phase-change material increases, which can correspondingly expand the volume of the pressure regulating part, thereby causing the relative distance between the first and second support parts to change. It causes the shaft diameter of the reel to expand, which acts to tighten the rope on the reel.

The internal cavity of the pressure regulating part is provided with a working medium that causes the volume of the cavity to change. The working medium can be water. From liquid to gas, the total volume increases, and the internal cavity of the push pressure regulating part becomes larger, pushing the two ends of the piston to move in opposite directions, driving the first expansion support part and the second The expansion supporting part moves in the opposite direction to achieve the effect of increasing the shaft diameter of the reel.

The working medium in the internal cavity of the pressure regulating part can be hydrocarbons or mixed working fluids, such as n-pentane. Pentane gradually changes from liquid to gas, and the total volume increases, pushing the inner cavity of the pressure regulating part to become larger, pushing the two ends of the piston to move in opposite directions, and driving the first expansion support parts that are fixedly connected to the two ends of the piston respectively Move in the opposite direction to the second expansion supporting part to achieve the effect of increasing the shaft diameter of the reel.

In the same way, the working medium suitable for use under normal temperature and pressure can also be: 2-methylbutane, the phase transition temperature is 25°C, 2,2-dimethylpropane, the phase transition temperature is 9°C, and several kinds can also be selected. The working medium is composed of a mixture, which is used in different temperature and pressure environments.

Furthermore, in order to tighten the rope more accurately, a working medium with a large specific heat capacity and a small volume change before and after the phase change can be used, such as n-hexadecane. Under normal pressure, the critical temperature of the solid-liquid change of n-hexadecane is 28°C, but the specific heat capacity of n-hexadecane is relatively large, and the phase change speed is relatively slow. After the solid-liquid phase change, the volume change is small, which is suitable for more accurate Tighten the rope.

Preferably, the pressure regulating part 3 is a cylindrical piston structure. The piston-type structure is mature and sensitive to internal volume changes, and the pressure and pressure transmission can be controlled by adjusting the cross-sectional area of the piston. When the internal phase change material has little difference in temperature and other factors in the normal environment and the working environment such as industrial wastewater, and when the volume change of the phase change material is small, a larger cross-sectional area of the piston can be configured to make the small pressure change meet sufficient design requirements The thrust on both sides of the piston.

Preferably, the working medium 5 is a composition of an acidic substance with an acidity stronger than carbonic acid and calcium carbonate. When placed in the positive direction, the acidic liquid and the calcium carbonate solid are phase-separated and do not react. During the working process, as shown in Figure 3, the position of the adjustment reel changes, so that the acidic substance and the calcium carbonate solid are in contact with each other. The chemical reaction produces carbon dioxide gas, and the carbon dioxide gas expands the piston. In order to prevent the distance between the two ends of the support part from being too large during the expansion process, the pressure regulating part 3 is also provided with a first stopper 31. When the internal cavity volume When a certain value is reached, the volume of the inner cavity no longer increases.

As a preference, the pressure regulating part 3 is also provided with a pressure limiting valve 32, the pressure limiting valve is located on the cavity wall of the internal cavity 4, when the pressure of the internal cavity 4 is too large, the pressure limiting valve is opened to make the internal cavity 4 and the The external environment is connected to prevent excessive pressure in the cavity from damaging the pressure regulating part or tightening the rope too fast.

As a preference, the expansion support part is provided with a rope guide groove 2, and the rope on the reel is wound on the reel through the rope guide groove 2. The rope guide groove 2 can be a pulley structure, and for non-liquid In the working environment, substances such as lubricating oil can be added to the rope guide groove to reduce the frictional resistance between the rope and the reel.

As preferably, the reel is also provided with a second limiter 33, and the ends of the limiter are respectively connected with the first support part and the second support part, and the limiter can be connected with a movable pin without limiting the first support. part and the second branch, but it can limit the first and second support parts to approach each other, prevent the rope on the reel from suddenly loosening due to the diameter of the reel shaft becoming smaller, and can also play a role when it is taken out from the waste water environment. The effect of reducing the shaft diameter of the scroll. A limit rod can be set between the second expansion support part and the first expansion support part, and the position of the limit rod can be set so that the limit rod does not contact the rope wound on the reel and does not affect the tightening of the rope.

The second limiter 33 can be a limit rod, and the limit rod is divided into an outer tube and an inner tube, the outer tube is fixedly connected to the first expansion part, the inner tube is fixedly connected to the second expansion part, and the outer tube is sleeved inside Outside the tube, a limit hole is set on the outer tube, and an elastic clamping part is set on the inner tube. The elastic clamping part corresponds to the limit hole. The elastic locking part on the inner tube is pressed into the inner tube by the outer tube. After moving for a certain distance, the elastic locking part on the inner tube passes through the limiting hole on the outer tube. Because the limiting hole cannot press the elastic locking part, the elastic locking part The parts gradually pop out from the limit hole. At this time, when the two expansion support parts are subjected to the force that makes the two expansion support parts approach, the inner tube is stuck on the limit hole of the outer tube due to the elastic locking part, and the two cannot approach each other. , the limit holes of the above-mentioned outer tube can also be set at a certain distance along the direction of the tube axis. Movement in a single direction separate from each other. This ensures that when the pressure in the pressure regulating part is lower than the pressure applied to the expansion support part by the rope wound around the two expansion support parts, the shaft diameter of the reel will not suddenly become smaller, causing problems such as the rope falling off the reel.

One or more limit rods can be set above. When two or more limit rods are evenly distributed between the two expansion support parts, it can make the two expansion support parts be able to withstand the force that is close to each other. A single limit rod has greater force and can maintain balance, and it is not easy for one end of the expansion support part to approach each other, causing the reel to be damaged or the rope to fall off.

After the above-mentioned elastic locking part of the limiting rod is stuck in the limiting hole, the elastic locking part can be pushed out from the limiting hole by manually pressing the elastic locking part, so that the limiting rod can be restored to its original length and the reel can be conveniently used again.

A limit rope is also arranged in the inner and outer tubes of the limit rod, and the two ends of the limit rope are respectively fixed on the endpoints of the inner and outer tubes. Excessive diameter of the reel shaft can damage the reel or break the entangled rope. Setting the position of the limit rope can prevent the limit rope from contacting with the rope wound on the reel, preventing mutual entanglement with the rope and affecting the tightening of the rope.

It is also possible to only set a limit rope between the two expansion support parts without a limit rod, which can also limit the maximum value of the expansion reel shaft diameter of the two expansion support parts, so as to prevent the reel shaft from being damaged or damaged due to the excessive diameter of the reel shaft. The action of breaking a tangled rope.

The above-mentioned limit rope and limit rod can also be arranged individually or in combination between the two movable parts of the pressure regulating part, and can also limit the maximum value of the expansion reel shaft diameter of the two expansion support parts, so as to prevent the diameter of the reel shaft from increasing. Excessive size can cause damage to the reel or break the twisted rope.

In order to increase the effect of relaxing or tightening the rope, preferably, the pressure regulating part 3 includes two or more columnar piston structures. By increasing the number of the pressure regulating parts, the two sides of the rotating shaft of the pressure regulating force can be increased. The expansion force of a support department. By increasing the number of pressure regulating parts, the length of the reel can also be increased, so that the number of turns of the rope that can be wound on the reel increases. When the number of turns increases, the shaft diameter of the reel increases per unit length, and the amount of change in the length of the rope is introduced. corresponding increase in proportion.

The above are only some specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be covered within the protection scope of the present invention.

Claims (10)

A reel with a variable shaft diameter, comprising a first expansion support part (11) and a second expansion support part (12) that are movably connected through a pressure adjustment part (3), characterized in that the pressure adjustment part (3) is also It includes an internal cavity (4) with a variable volume, and the substance in the cavity is a working medium (5). The physical and chemical changes of the working medium (5) cause the volume of the cavity to change, so that the first expansion support part (11 ) and the relative distance between the second expansion support portion (12) changes. The reel with variable shaft diameter according to claim 1, characterized in that, the pressure regulating part (3) is a cylindrical piston structure. The reel with variable shaft diameter according to claim 2, characterized in that, the working medium (5) is a material that undergoes phase change under different temperatures and pressures. The reel with variable shaft diameter according to claim 2, characterized in that, the working medium (5) is a composition of an acidic substance stronger in acidity than carbonic acid and calcium carbonate. The reel with variable shaft diameter according to claim 2, characterized in that, the pressure regulating part (3) is also provided with a pressure limiting valve (32), and the pressure limiting valve is located on the cavity wall of the inner cavity (4) , when the pressure in the internal cavity (4) is too high, the pressure limiting valve opens to communicate the internal cavity (4) with the external environment. The reel with variable shaft diameter according to claim 5, characterized in that, the pressure regulating part (3) is also provided with a first limiter (31), when the volume of the inner cavity (4) reaches a certain value , the volume of the internal cavity (4) no longer increases. The reel with variable shaft diameter according to any one of claims 1 to 6, characterized in that a rope guide groove (2) is arranged on the expansion support part, and the rope on the reel passes through the rope guide groove ( 2) Winding on the reel. The reel with variable shaft diameter according to claim 7, characterized in that, the rope guide groove (2) includes a pulley structure for reducing the frictional resistance between the rope and the reel. The reel with variable shaft diameter according to claim 2, characterized in that, the reel is also provided with a second limiter (33), and the ends of the second limiter are respectively connected to the first supporting part, the second The support parts are connected to restrict the first and second support parts from approaching each other. The reel with variable shaft diameter according to claim 1, characterized in that, the pressure regulating part (3) has two or more cylindrical piston structures.

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