SI26104A - An electro-hydraulic wire rope winder and a winch with said winder - Google Patents

Abstract

The present invention relates to the field of construction details in forestry winches, which are related to winding the rope to the winch drum. The invention relates to an electro-hydraulic wire rope winder on a winch drum, which consists of: a winder carrier; a carrier of the diverting rollers guiding the rope towards the drum which is movably mounted on the winder housing or at least movably connected to it; a two-way hydraulic cylinder mounted on one side on the roller carrier and on the other side on the winder carrier; a winder controller connected to: an inductive sensor mounted on the drum, said sensor detecting the speed of rotation of the traction drum, preferably via the detection of grooves on the drum; a rotary angle sensor attached to the winder bracket, which measures the angle between the deflection roller bracket and the winder bracket, continuously monitors the data from the sensor, to adjust the speed and direction of movement of the hydraulic cylinder; by means of a suitable valve for controlling the hydraulic cylinder, said cylinder may, by its movement, cause the roller carrier to move if the controller detects the need to correct the path of the reversing roller carrier.

Description

ELECTRO-HYDRAULIC WIRE ROPE WINDER AND WINCH WITH THE ABOVE ROLLER

Field of technology

The present invention belongs to the field of forestry winches, more precisely to the field of construction details in forestry winches, which are related to winding the rope on the winch drum. The invention relates to an electro-hydraulic wire rope winder on a winch drum and a winch with said winder.

Background of the invention and technical problem

During the operation of the winches, it is important that the rope is guided and wound on the drum evenly and in layers. Due to the requirement for a compact design and the consequent short distance between the drum and the diverter pulley due to the excessive angle of the rope relative to the drum, the construction of forestry winches prevents good automatic winding of the wire rope on the drum. By increasing the width of the drum due to the increase in the capacity of the wire rope on the drum, the quality of winding is further deteriorated so that the rope is wound unevenly.

The technical problem solved by the present invention is therefore the construction of a system that will enable even winding of wire or tow rope on the drum. Mechanical assemblies are known that follow the winding of the rope on the drum and ensure as even winding as possible, but even with such winders there are deviations, because when tilting the winch the own weight of the winder affects the quality of winding the wire rope. In addition, the disadvantages of mechanical winders are also the large dimensions and consequently such a winder is difficult to install or it is more difficult to make a compact construction.

State of the art

U.S. Pat. No. 2,662,703 describes an automatic rope guide mechanism for winding, which is made with mechanical components and differs from the invention in design. U.S. Pat. No. 2,224,380 describes a winch with a guide or rope winder, wherein the guide is slidably mounted on a driven rod so that when the drum rotates while winding the rope, the guide travels back and forth parallel to the drum, guiding the rope winding around the drum. . This way, the rope does not get tangled or twisted in clusters (several layers of rope at one end of the drum while there are zero or few layers of rope at the other). The solution is implemented with mechanical components, which is different from the present invention. The described solution also has the disadvantage of not withstanding lateral loads.

Document CN101700859 describes an automatic winch rope winder where a rope is mounted on a disc relief rope through a positioning shaft; the sliding block with the rope tightening device is mounted on parallel sliding tracks, the rope disconnecting switch and the rope positioning block are connected in series and installed at one end of the rope release sliding block; the rope release connection communicates with the electric hydraulic pump. The construction of this rope winder is different from that of the present invention.

Slovenian patent application no. P-201900213 of the applicant is disclosed by a winder for uniform winding of a wire rope on a drum consisting of a mechanical winder assembly and an electrohydraulic assembly. The mechanical assembly of the winder is directly connected to the drum on which the wire rope is wound, and consists of a cross spindle with a nut and a drive assembly that takes care of the transmission of torque from the drum to the cross spindle. The movement of the nut left and right accurately mimics the path and speed of movement of the wire rope when properly wound on the drum. A rotary angle sensor attached to the nut, which is connected to the winch controller, measures the deviation of the hydraulic winder path relative to the nut path. Based on the measured deviations (angle), the winch controller corrects the path of the hydraulic winder in order to coordinate the movement of the winder nut and the roller carrier and consequently the wire rope. The present invention differs from this solution in that it does not have the described mechanical assembly and is consequently simpler.

Description of the solution to the technical problem

The essence of the electro-hydraulic winder for even winding of the wire rope on the winch drum is that it consists of:

- the winder holder,

- a carrier of the deflection rollers guiding the rope towards the drum, said deflection roller carrier being movably mounted on the winder housing or at least movably connected to it,

- a two-way hydraulic cylinder mounted on one side on the roller carrier and on the other side on the winder carrier,

- a winder controller which is preferably a winch controller and which is connected to:

o Inductive sensor or other suitable sensor, mechanism or switch mounted on the drum, said sensor detecting the speed of rotation of the traction drum, preferably by detecting grooves on the drum, o Rotary angle sensor attached to the winder carrier, measuring the angle between the carrier the fan constantly monitors the data from the sensor, to adjust the speed and direction of movement of the hydraulic cylinder, on the appropriate valves, preferably three-way electrically controlled proportional valve, and to control the hydraulic cylinder, the cylinder can cause movement of the roller carrier. the paths of the deflection roller carrier.

The drum has fixed rings with suitably spaced grooves, preferably with evenly or evenly spaced grooves distributed around the circumference, or the grooves are cut directly on the side of the drum. These grooves are counted by an inductive sensor, which is preferably fixed to the winch housing. Based on the detected frequency of movement of the grooves, the controller calculates the speed of rotation of the drum and consequently the speed of movement of the wire rope to the left or. right on the drum tubes. As a result, the controller knows the current position of the wire rope on the drum. The direction of rotation of the drum rotates the controller from the signal generated by the user by activating the function of pulling or opening the brake.

The hydraulic cylinder is preferred because the winch usually already has a hydraulic system and because the driving forces are very high. It would also be possible to perform the movement with a linear electric motor, but the solution is expensive, and even such a powerful source of energy is not available, which would require additional optimization of the design of the winder and winch.

The preferred design of the winder is with an angle sensor and forks on the roller carrier, but it could be replaced by a linear measuring rod or any other element that can measure or determine the position of the roller carrier. Instead of a carrier of the diverting rollers, a suitable lever mechanism could also be used to take care of the movement of the rope, which is wound around the width of the drum.

It is crucial for the operation of the winder that the controller detects:

- speed of rotation of the drum, preferably by counting the movement of the grooves on the drum,

- Direction of rotation of the drum, preferably via activated winding or unwinding of the rope,

- The angle between the roller carrier and the winder carrier, and based on the measured values, by influencing the appropriate valve, corrects the path of the diverter carrier to achieve coordinated movement of the diverter rollers according to the direction and speed of rotation of the drum and thus proper winding. . When the controller detects a mismatch between the rotation of the drum (sensor on the drum) and the movement of the roller carrier (angle sensor), the controller opens the speed and direction of movement of the hydraulic cylinder by opening the electrohydraulic valve, preferably proportional to the three-way electrohydraulic valve. For example, if the diverter roller carrier lags behind the path of the rope on the drum, the speed of the diverter roller carrier must increase, which is ensured by a valve that increases the speed of oil flow into the cylinder by opening. The valve regulates the hydraulic cylinder in known ways.

The monitoring of the mentioned winding parameters with the winder controller according to the invention takes place continuously, even with the proper operation of the winder, as deviations may occur due to changes in winding conditions, such as e.g. the speed of rotation of the drum due to changes in engine operation, the addition or removal of engine gas, the kinematics of the lever mechanism, which does not allow uniform movement. If the speed and direction of rotation of the drum and the roller carrier are not coordinated, the rope begins to wind uncontrollably on the drum and accumulate in such a way that it can be damaged and destroyed at full force. With the winder according to the invention, the range of deviations can be determined by correcting the parameters of the controller, namely the ideal approximation to an angle of 0. The deviation parameters and the opening of the electro-hydraulic proportional valve can be changed on the controller so that optimal system operation is achieved.

The winch with a winder according to the invention can be of any type, single-drum or double-drum, whereby the winder enables optimal winding of the rope in even layers, which significantly reduces the possibility of damage to the rope. The winder is mounted on a winch on the side where the wire rope on the drum emerges or flows in known ways.

The electro-hydraulic winder according to the invention will be described in more detail below with the aid of an embodiment and figures showing:

Figure 1 Drum with inductive sensor that counts the speed of rotation of the drum

Figure 2 Two-drum winch wire rope winder

Figure 3 Winch winder control for single drum winch

Figure 1 shows the drum B to which the elements of the ring B1 are attached with evenly spaced grooves B2 distributed around the circumference or the grooves are cut directly on the side of the drum counted by the inductive sensor 2, which is preferably fixed to the winch housing.

Figure 2 shows a winder for uniform winding of a wire rope on a drum according to a possible embodiment for a double-drum winch consisting of:

- winder bracket 1 with outer part 4,

- an angle sensor 1a with a sensor mounted on the roller carrier, said sensor 1a measuring the angle of deviation of the carrier roller carrier 5a from the middle position of the sensor rollers 5a via a lever mounted on the sensor axis 1a and movably mounted on the roller carrier 5a,

- a two-way hydraulic cylinder 5c mounted on one side on the carrier 5 of the deflection rollers 5a and on the other hand on the carrier of the winder 1, said cylinder 5c is adapted to cause horizontal movement of the carrier 5 of the deflection rollers 5a with guide 6,

- a suitable valve (not shown in the figures), preferably a three-way electrically controlled proportional valve, for controlling said hydraulic cylinder, and

- a controller (not visible in the pictures), which is preferably a winch controller, for adjusting the speed and direction of movement of the hydraulic cylinder.

The carrier 5 of the deflection rollers 5a also has transverse deflection rollers 5b for guiding the wire rope as shown in Figure 2.

The control scheme of the winder according to the invention is shown in Figure 3, namely the controller based on the calculated position of the wire rope on the drum (monitoring data from both sensors) opens the electrohydraulic valve and monitors the angle of the angle sensor 1a. The hydraulic oil causes the retractor cylinder 5c to move and thus the deflection rollers 5 to move in the appropriate direction and at the appropriate speed until the angle sensor reaches the neutral position. This achieves a minimum angle between the inlet rope passing between the rollers 5a on the deflection roller carrier 5 and the rope on the drum. This ensures good winding of the wire rope to the winch drum.

Claims (12)

Patent claims 1. Electro-hydraulic wire rope winder for forestry winch, characterized in that it consists of: - the winder holder, - a carrier of the deflection rollers guiding the rope towards the drum, said deflection roller carrier being movably mounted on the winder housing or at least movably connected to it, - a two-way hydraulic cylinder mounted on one side on the roller carrier and on the other side on the winder carrier, - a winder controller which is preferably a winch controller and which is connected to: o Inductive sensor or other suitable sensor, mechanism or switch mounted on the drum, said sensor detecting the speed of rotation of the traction drum, preferably by detecting grooves on the drum, o Rotary angle sensor attached to the winder carrier, measuring the angle between the carrier the fan constantly monitors the data from the sensor, to adjust the speed and direction of movement of the hydraulic cylinder, on the appropriate valves, preferably three-way electrically controlled proportional valve, and to control the hydraulic cylinder, the cylinder can cause movement of the roller carrier. the paths of the deflection roller carrier. Electro-hydraulic wire rope winder for forestry winch according to Claim 1, characterized in that the controller detects: - speed of rotation of the drum, preferably by counting the movement of the grooves on the drum, - Direction of rotation of the drum, preferably via activated winding or unwinding of the rope, - The angle between the roller carrier and the winder carrier, and based on the measured values, by influencing the appropriate valve, corrects the path of the diverter carrier to achieve coordinated movement of the diverter rollers according to the direction and speed of rotation of the drum and thus proper winding. . Electro-hydraulic wire rope winder on a forest winch drum according to any one of the preceding claims, characterized in that the controller is adapted to detect a mismatch between the rotation of the drum and the movement of the roller carrier. valve, whereby in the event of a lag of the diverter roller carrier behind the rope path on the drum, the speed of the diverter roller carrier must increase, which means an increase in the speed of oil flow into the cylinder by opening the valve. Electro-hydraulic wire rope winder on a forestry winch drum according to any one of the preceding claims, characterized in that the drum has attached rings with suitably, preferably evenly, grooves distributed around the circumference or the grooves cut directly on the drum side. Electro-hydraulic wire rope winder on a forestry winch drum according to the preceding claim, characterized in that said grooves are considered to be an inductive sensor preferably fixed to the winch housing, and based on the detected groove frequency consequently the speed of movement of the wire rope to the left or right on the drum tubes. Electro-hydraulic wire rope winder on a forest winch drum according to any one of the preceding claims, characterized in that the direction of rotation of the drum rotation is obtained by the controller from a user-generated signal by activating the pull or brake release function. Electro-hydraulic wire rope winder on a forestry winch drum according to any one of the preceding claims, characterized in that the hydraulic cylinder is replaced by a linear electric motor. Electro-hydraulic wire rope winder on a forest winch drum according to any one of the preceding claims, characterized in that the angle sensor is replaced by a linear measuring rod or some other element capable of measuring or determining the position of the deflection roller carrier. Electro-hydraulic wire rope winder on a forestry winch drum according to any one of the preceding claims, characterized in that the guide of the carrier with diverting rollers instead of the preferred linear guide is made with a lever mechanism. Electro-hydraulic wire rope winder on a forestry winch drum according to any one of the preceding claims, characterized in that the deviation and valve opening parameters can be determined and changed on the controller so as to achieve optimal rope winding, changing the rope diameter at change only these. Winch with winder according to any one of the preceding claims. Winch according to the preceding claim, characterized in that it is single-drum or double-drum.