On-line monitoring device for tension of steel wire rope of single-rope winding type hoister

Abstract

The utility model belongs to the technical field of mine hoists and mine hoisting winches, and particularly relates to a single-rope winding type hoister steel wire rope tension online monitoring device. The device comprises a steel wire rope, a reel and a console, the device is characterized by further comprising a bearing beam, a bolt with a sensor, a nut and a main shaft bearing seat, the bearing beam is pre-buried in a concrete foundation to be fixed; the sensor is arranged in the bolt with the sensor; the main shaft bearing seat is used for supporting the winding drum, and the main shaft bearing seat and the bearing beam are fixed on the bearing beam through bolts and nuts with sensors; when the container is lifted and lowered, the pulling force of the steel wire rope wound on the winding drum exerts anticlockwise tipping torque on the bolt through the bearing seat for supporting the main shaft of the winding drum, and the bolt and the nut with the sensor need to overcome the torque, so that the sensor in the bolt generates a deformation signal, and the control line connected with the sensor transmits the signal to the control console; the tension value of the steel wire rope can be calculated on line through analog-to-digital conversion and calculation.

Description

Technical Field

[0001] The invention belongs to the technical field of mine hoists and mine hoisting winches, and in particular relates to an online monitoring device for the tension of a steel wire rope of a single-rope winding hoist. Background Art

[0002] The "Safety Regulations for Coal Mines", "Single Rope Wrapping Mine Hoist" (GB / T20961-2007), and "JTP Mine Hoist Winch" (JB / T7888-2010) (hereinafter referred to as hoists) all have strict regulations on the tension and tension difference of wire ropes, and require that they should not be overloaded. During the operation of the hoist, the tension changes due to gravity, friction, etc. as the load of the wire rope changes and its length changes during lifting and lowering (including changes in the displacement mass of the drum). At present, the control device equipped on the hoist console has no direct monitoring function for the tension of the wire rope. If the hoist is overloaded, derailed, or stuck during operation, the tension of the wire rope will exceed its rated tension, and its safety factor will be less than the standard value, and even the wire rope will break, causing serious safety hazards. Summary of the invention

[0003] The invention mainly solves the problems existing in the prior art and provides an online monitoring device for the tension of a steel wire rope of a single-rope winding hoist.

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

[0005] The online monitoring device for wire rope tension of a hoist includes a wire rope, a drum, and a control console; it is characterized in that it also includes a bearing beam, a bolt with a sensor, a nut, and a main shaft bearing seat; the bearing beam is pre-buried in the concrete foundation of the hoist and fixed; the bolt with a sensor has a built-in sensor; the main shaft bearing seat is used to support the drum, and is fixed to the bearing beam with bolts and nuts with sensors; the sensor in the bolt with a sensor is connected to the control line, and the sensor change signal can be transmitted to the control console. When the wire rope is not connected to the lifting container, the tension value of the wire rope is calibrated to zero through the control console; when the wire rope connected to the container is lifted and lowered, the tension of the wire rope wrapped around the drum has a counterclockwise tipping moment on the bolt through the main shaft bearing seat supporting the drum ( Figure 1 ), the bolts and nuts with sensors need to overcome the torque, so the sensor in the bolt generates a deformation signal, and the control line connected to the sensor transmits the signal to the control console. The PLC in the control console can calculate the wire rope tension value online through analog-to-digital conversion and calculation.

[0006] Compared with the prior art, the present invention has the following beneficial effects:

[0007] Since the present invention transmits the deformation signal to the hoist control system through the bolts, nuts, bearing beams, main shaft bearing seats with sensors and the control line connected to the sensor, the wire rope tension value can be calculated online through analog-to-digital conversion and calculation. When the tension value is greater than the set maximum value, the hoist control system can be powered off in time to avoid accidents. The present invention can realize online monitoring of the tension of the wire rope and real-time monitoring of the safety factor of the wire rope, thereby realizing online monitoring of the safety of the mine hoist and ensuring the reliability and safety of the hoist. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a rotation diagram of the structure of the patent of the present invention in the A direction;

[0009] Figure 2 This is a top view of the structure of the patent of this invention;

[0010] Figure 3 This is a partial enlarged view.

[0011] In the figure: 1—wire rope; 2—spindle bearing seat (a pair); 3—bearing beam (a pair); 4—control console; 5—reel; 6—bolt with sensor (a pair); 7—nut (a pair). DETAILED DESCRIPTION

[0012] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0013] Specifically, as shown in the figure, a single-rope winding hoist wire rope tension online monitoring device of the present invention includes a wire rope 1, a drum 5, and a control console 4; it is characterized in that it also includes a bearing beam 3, a bolt 6 with a sensor, a nut 7, and a main shaft bearing seat 2. The bearing beam 3 is pre-buried in the concrete foundation of the hoist and fixed; the bolt 6 with a sensor has a built-in sensor; the main shaft bearing seat 2 is used to support the drum, and is fixed to the bearing beam 3 with the bolt 6 with a sensor and the nut 7; the sensor in the bolt 6 with a sensor is connected to the control line, and the change signal of the sensor can be transmitted to the control console 4. When the wire rope 1 connected to the container is lifted and lowered, the tension of the wire rope 1 wound on the drum 5 has a counterclockwise tipping moment on the bolt through the main shaft bearing seat 2 supporting the drum ( Figure 1 ), the bolt 6 and nut 7 with sensors need to overcome the torque, so the sensor in the bolt generates a deformation signal, and the control line connected to the sensor transmits the signal to the control console. The PLC in the control console can calculate the wire rope tension value online through analog-to-digital conversion and calculation.

[0014] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An online monitoring device for the tension of a steel wire rope of a single-rope winding hoist, comprising a steel wire rope (1), a drum (5), and a control console (4); wherein: It also includes a bearing beam (3), a bolt with a sensor (6), a nut (7), and a main shaft bearing seat (2); the bearing beam (3) is pre-buried in the concrete foundation of the hoist and fixed; the bolt with a sensor (6) has a built-in sensor; the main shaft bearing seat (2) is used to support the drum, and is fixed to the bearing beam (3) with the bolt with a sensor and a nut (7); the sensor in the bolt with a sensor (6) is connected to the control line, and the change signal of the sensor can be transmitted to the control console (4); when the wire rope (1) is connected to the container and lifted or lowered, the tension of the wire rope (1) wound on the drum (5) exerts a counterclockwise tipping moment on the bolt through the main shaft bearing seat (2) supporting the drum.

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