A crane wire rope tilt warning device and method

Abstract

The present invention relates to a crane wire rope tilt warning device and method, belonging to the field of crane electrical technology. The technical solution of the present invention is: a group of wire rope tilt detection photoelectric switches are respectively installed before and after the main hook wire rope and the auxiliary hook wire rope under the main trolley and the auxiliary trolley of the crane, and a warning signal is issued when the main hook wire rope and the auxiliary hook wire rope tilt reach or exceed a preset angle. The beneficial effect of the present invention is: when the wire rope tilt exceeds a certain angle, the detection photoelectric switch is actuated to give a wire rope tilt warning signal, reminding the crane operator to correct the operation in time to avoid hitting the sliding wire baffle, thereby ensuring safe production.

Description

Technical Field

[0001] The invention relates to a crane wire rope inclination warning device and method, belonging to the field of crane electrical technology. Background Art

[0002] Overhead crane is a kind of lifting equipment widely used in various industrial and mining enterprises. The 110T overhead crane for charging in steel mills lifts the scrap steel bucket through the main hook and the auxiliary hook to add scrap steel to the converter. Due to the process layout, there is a 60cm gap between the front of the scrap steel bucket and the furnace door, and the rear of the scrap steel bucket is only 60cm away from the overhead crane slide line. During operation, once the main and auxiliary trolleys, and the main and auxiliary lifting do not cooperate well, the wire rope will tilt. When the tilt is serious, if the main and auxiliary trolleys are operated at this time, the scrap steel bucket will swing back and forth and hit the overhead crane slide line or the furnace door. This situation is most common when the 110T overhead crane is withdrawing the bucket backwards after adding scrap steel to the converter. If the wire rope is severely tilted, it will cause the wire rope to hit the sliding line baffle. Because the scrap steel bucket has a large inertia, in actual production, the wire rope hits the sliding line baffle every year, causing the entire charging cross-sliding line to lose power. This has a huge impact on production, because the 110T overhead crane sliding line is a high-voltage sliding line. Personnel go to the site to confirm safety and contact the high-voltage personnel to supply power, which basically takes about an hour each time. Summary of the invention

[0003] The object of the present invention is to provide a crane wire rope inclination warning device and method, by installing photoelectric switches before and after the main hook wire rope and the auxiliary hook wire rope to detect the inclination of the wire rope. When the wire rope inclination exceeds a certain angle, the photoelectric switch is activated to give a wire rope inclination warning signal, reminding the crane operator to correct the operation in time to avoid hitting the sliding wire baffle, thereby ensuring safe production and effectively solving the above-mentioned problems existing in the background technology.

[0004] The technical solution of the present invention is: a crane wire rope inclination warning device, comprising an auxiliary hook wire rope forward inclination detection oblique photoelectric switch baffle group, an auxiliary hook wire rope rear inclination detection photoelectric switch baffle group, an auxiliary hook wire rope rear inclination detection photoelectric switch group, an auxiliary hook wire rope front inclination detection photoelectric switch group, a main hook wire rope rear inclination detection photoelectric switch baffle group, a main hook wire rope front inclination detection photoelectric switch baffle group, a main hook wire rope front inclination detection photoelectric switch group, an auxiliary hook wire rope rear inclination detection relay, an auxiliary hook wire rope front inclination detection relay, a main hook wire rope rear inclination detection relay, a main hook wire rope front inclination detection relay, a tilt warning relay and a tilt warning buzzer, the auxiliary trolley and the main trolley are installed above the trolley beam; the auxiliary hook wire rope forward inclination detection oblique photoelectric switch baffle group and the auxiliary hook wire rope rear inclination detection photoelectric switch baffle group are installed below the auxiliary trolley, ... hook wire rope rear inclination detection photoelectric switch baffle group The electric switch group is installed on the auxiliary hook wire rope rear inclination detection photoelectric switch baffle group, and the auxiliary hook wire rope front inclination detection photoelectric switch group is installed on the auxiliary hook wire rope front inclination detection photoelectric switch baffle group; the main hook wire rope rear inclination detection photoelectric switch baffle group and the main hook wire rope front inclination detection photoelectric switch baffle group are installed below the main trolley, the main hook wire rope rear inclination detection photoelectric switch group is installed on the main hook wire rope rear inclination detection photoelectric switch baffle group, and the main hook wire rope front inclination detection photoelectric switch baffle group is installed on the main hook wire rope front inclination detection photoelectric switch baffle group; the upper end of the auxiliary hook wire rope is respectively connected to the auxiliary hook wire rope forward inclination detection oblique photoelectric switch baffle group and the auxiliary hook wire rope rear inclination detection photoelectric switch baffle group, and the lower end of the auxiliary hook wire rope is connected to the auxiliary hook hook head; the upper end of the main hook wire rope is respectively connected to the main hook wire rope rear inclination detection photoelectric switch baffle group and the main hook wire rope front inclination detection photoelectric switch baffle group, and the lower end of the main hook wire rope is connected to the main hook hook head;

[0005] The auxiliary hook wire rope rear inclination detection photoelectric switch group is connected to the inclination warning relay through the auxiliary hook wire rope rear inclination detection relay, the auxiliary hook wire rope front inclination detection photoelectric switch group is connected to the inclination warning relay through the auxiliary hook wire rope front inclination detection relay, the main hook wire rope front inclination detection photoelectric switch group is connected to the inclination warning relay through the main hook wire rope front inclination detection relay, the main hook wire rope rear inclination detection photoelectric switch group is connected to the inclination warning relay through the main hook wire rope rear inclination detection relay, and the output end of the inclination warning relay is connected to the inclination warning buzzer.

[0006] The auxiliary hook wire rope rear inclination detection photoelectric switch baffle group includes an auxiliary hook wire rope rear inclination detection transmitting end photoelectric switch baffle and an auxiliary hook wire rope rear inclination detection receiving end photoelectric switch baffle. The auxiliary hook wire rope rear inclination detection photoelectric switch group includes an auxiliary hook wire rope rear inclination detection transmitting end photoelectric switch and an auxiliary hook wire rope rear inclination detection receiving end photoelectric switch. The auxiliary hook wire rope rear inclination detection transmitting end photoelectric switch is installed on the auxiliary hook wire rope rear inclination detection transmitting end photoelectric switch baffle, and the auxiliary hook wire rope rear inclination detection receiving end photoelectric switch is installed on the auxiliary hook wire rope rear inclination detection receiving end photoelectric switch baffle.

[0007] A method for warning the inclination of a crane wire rope, characterized by comprising the following steps:

[0008] (1) The auxiliary hook wire rope rear inclination detection photoelectric switch group and the auxiliary hook wire rope front inclination detection photoelectric switch group are installed under the auxiliary trolley, and the main hook wire rope front inclination detection photoelectric switch group and the main hook wire rope rear inclination detection photoelectric switch group are installed under the main trolley; the upper end of the auxiliary hook wire rope is connected to the main hook wire rope front inclination detection photoelectric switch group and the main hook wire rope rear inclination detection photoelectric switch group, respectively, and the lower end is connected to the auxiliary hook hook head; the upper end of the main hook wire rope is connected to the main hook wire rope front inclination detection photoelectric switch group and the main hook wire rope rear inclination detection photoelectric switch group, respectively, and the lower end is connected to the main hook hook head;

[0009] (2) The calculation formula for the horizontal deviation of the wire rope is:

[0010] L=2ПDβ / 360

[0011] Where: L is the horizontal offset of a point on the wire rope relative to the original position, in CM;

[0012] D is the vertical distance between the original position of a point and the plane of the trolley, in CM;

[0013] β is the tilt angle;

[0014] (3) When the main hook wire rope tilts to the set tilt warning angle, the tilt detection relay coil connected to the main hook wire rope front tilt detection photoelectric switch group and the main hook wire rope rear tilt detection photoelectric switch group is energized and actuated, so that the tilt warning relay coil is energized and actuated, and the tilt warning buzzer sounds an alarm to remind the crane operator to correct the operation in time to avoid accidents; when the auxiliary hook wire rope tilts, the detection action process of the device is the same as the tilt of the main hook wire rope.

[0015] The auxiliary hook wire rope rear inclination detection photoelectric switch group and the auxiliary hook wire rope front inclination detection photoelectric switch group are installed 1 meter below the auxiliary trolley, 50CM on the left and right sides of the auxiliary hook wire rope; the main hook wire rope front inclination detection photoelectric switch group and the main hook wire rope rear inclination detection photoelectric switch group are installed 1 meter below the main trolley, 50CM on the left and right sides of the main hook wire rope.

[0016] The beneficial effect of the present invention is that photoelectric switches are installed before and after the main hook wire rope and the auxiliary hook wire rope to detect the inclination of the wire rope. When the inclination of the wire rope exceeds a certain angle, the photoelectric switch is activated to give a wire rope inclination warning signal, reminding the crane operator to correct the operation in time to avoid hitting the sliding wire baffle, thereby ensuring safe production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a side view of the overall structure of the present invention;

[0018] Figure 2 This is a front view of the auxiliary hook rear tilt detection installation of the present invention;

[0019] Figure 3 It is a connection diagram of the electric control part of the present invention;

[0020] In the figure: auxiliary trolley 1, trolley beam 2, auxiliary hook wire rope forward tilt detection oblique photoelectric switch baffle group 3, auxiliary hook wire rope rear tilt detection photoelectric switch baffle group 4, auxiliary hook wire rope rear tilt detection photoelectric switch group 5, auxiliary hook wire rope front tilt detection photoelectric switch group 6, overhead crane slide line 7, auxiliary hook wire rope 8, auxiliary hook hook head 9, main trolley 10, main hook wire rope rear tilt detection photoelectric switch baffle group 11, main hook wire rope front tilt detection photoelectric switch baffle group 12, main hook wire rope front tilt detection photoelectric switch group 13, main hook wire rope rear tilt detection photoelectric switch group 14, main hook wire rope 15, main hook hook head 16, auxiliary hook wire rope rear tilt detection transmitting end photoelectric switch baffle 17, auxiliary hook wire rope rear tilt detection transmitting end photoelectric switch 18, auxiliary hook wire rope rear tilt detection receiving end photoelectric switch baffle 19, Auxiliary hook wire rope rear inclination detection receiving end photoelectric switch 20, auxiliary hook wire rope rear inclination detection photoelectric switch normally open contact 21, auxiliary hook wire rope front inclination detection photoelectric switch normally open contact 22, main hook wire rope rear inclination detection photoelectric switch normally open contact 23, main hook wire rope front inclination detection photoelectric switch normally open contact 24, auxiliary hook wire rope rear inclination detection relay 25, auxiliary hook wire rope front inclination detection relay 26, main hook wire rope rear inclination detection relay 27, main hook wire rope front inclination detection relay 28, main hook wire rope front inclination detection relay normally open contact 29, main hook wire rope rear inclination detection relay normally open contact 30, auxiliary hook wire rope front inclination detection relay normally open contact 31, auxiliary hook wire rope rear inclination detection relay normally open contact 32, tilt warning relay normally open delayed disconnection contact 33, tilt warning relay 34, tilt warning buzzer 35. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the invention implementation cases clearer, the technical solutions in the implementation cases of the present invention will be clearly and completely described below in conjunction with the drawings in the implementation cases. Obviously, the implementation cases described are only a small part of the implementation cases of the present invention, rather than all the implementation cases. Based on the implementation cases in the present invention, all other implementation cases obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] A crane wire rope tilt warning device comprises a forward tilt detection photoelectric switch baffle group 3 for auxiliary hook wire rope, a rear tilt detection photoelectric switch baffle group 4 for auxiliary hook wire rope, a rear tilt detection photoelectric switch group 5 for auxiliary hook wire rope, a front tilt detection photoelectric switch group 6 for auxiliary hook wire rope, a rear tilt detection photoelectric switch baffle group 11 for main hook wire rope, a front tilt detection photoelectric switch baffle group 12 for main hook wire rope, a front tilt detection photoelectric switch group 13 for main hook wire rope, a rear tilt detection photoelectric switch group 14 for main hook wire rope, and a auxiliary hook wire rope. The wire rope rear inclination detection relay 25, the auxiliary hook wire rope front inclination detection relay 26, the main hook wire rope rear inclination detection relay 27, the main hook wire rope front inclination detection relay 28, the inclination warning relay 34 and the inclination warning buzzer 35, the auxiliary trolley 1 and the main trolley 10 are installed above the trolley beam 2; the auxiliary hook wire rope forward inclination detection oblique photoelectric switch baffle group 3 and the auxiliary hook wire rope rear inclination detection photoelectric switch baffle group 4 are installed below the auxiliary trolley 1, and the auxiliary hook wire rope rear inclination detection photoelectric switch group 5 is installed The auxiliary hook wire rope rear tilt detection photoelectric switch baffle group 4 is installed, and the auxiliary hook wire rope front tilt detection photoelectric switch group 6 is installed on the auxiliary hook wire rope front tilt detection photoelectric switch baffle group 3; the main hook wire rope rear tilt detection photoelectric switch baffle group 11 and the main hook wire rope front tilt detection photoelectric switch baffle group 12 are installed under the main trolley 10, the main hook wire rope rear tilt detection photoelectric switch group 14 is installed on the main hook wire rope rear tilt detection photoelectric switch baffle group 11, and the main hook wire rope front tilt detection photoelectric switch group 13 is installed on the main hook wire rope front tilt detection photoelectric switch baffle group 12; the upper end of the auxiliary hook wire rope 8 is respectively connected to the auxiliary hook wire rope forward tilt detection photoelectric switch baffle group 3 and the auxiliary hook wire rope rear tilt detection photoelectric switch baffle group 4, and the lower end of the auxiliary hook wire rope 8 is connected to the auxiliary hook hook head 9; the upper end of the main hook wire rope 15 is respectively connected to the main hook wire rope rear tilt detection photoelectric switch baffle group 11 and the main hook wire rope front tilt detection photoelectric switch baffle group 12, and the lower end of the main hook wire rope 15 is connected to the main hook hook head 16;

[0023] The auxiliary hook wire rope rear inclination detection photoelectric switch group 5 is connected to the inclination warning relay 34 through the auxiliary hook wire rope rear inclination detection relay 25, the auxiliary hook wire rope front inclination detection photoelectric switch group 6 is connected to the inclination warning relay 34 through the auxiliary hook wire rope front inclination detection relay 26, the main hook wire rope front inclination detection photoelectric switch group 13 is connected to the inclination warning relay 34 through the main hook wire rope front inclination detection relay 28, the main hook wire rope rear inclination detection photoelectric switch group 14 is connected to the inclination warning relay 34 through the main hook wire rope rear inclination detection relay 27, and the output end of the inclination warning relay 34 is connected to the inclination warning buzzer 35.

[0024] The auxiliary hook wire rope rear inclination detection photoelectric switch baffle group 4 includes an auxiliary hook wire rope rear inclination detection transmitting end photoelectric switch baffle 17 and an auxiliary hook wire rope rear inclination detection receiving end photoelectric switch baffle 19, the auxiliary hook wire rope rear inclination detection photoelectric switch group 5 includes an auxiliary hook wire rope rear inclination detection transmitting end photoelectric switch 18 and an auxiliary hook wire rope rear inclination detection receiving end photoelectric switch 20, the auxiliary hook wire rope rear inclination detection transmitting end photoelectric switch 18 is installed on the auxiliary hook wire rope rear inclination detection transmitting end photoelectric switch baffle 17, and the auxiliary hook wire rope rear inclination detection receiving end photoelectric switch 20 is installed on the auxiliary hook wire rope rear inclination detection receiving end photoelectric switch baffle 19.

[0025] A method for warning the inclination of a crane wire rope, characterized by comprising the following steps:

[0026] (1) The auxiliary hook wire rope rear inclination detection photoelectric switch group and the auxiliary hook wire rope front inclination detection photoelectric switch group are installed under the auxiliary trolley, and the main hook wire rope front inclination detection photoelectric switch group and the main hook wire rope rear inclination detection photoelectric switch group are installed under the main trolley; the upper end of the auxiliary hook wire rope is connected to the main hook wire rope front inclination detection photoelectric switch group and the main hook wire rope rear inclination detection photoelectric switch group, respectively, and the lower end is connected to the auxiliary hook hook head; the upper end of the main hook wire rope is connected to the main hook wire rope front inclination detection photoelectric switch group and the main hook wire rope rear inclination detection photoelectric switch group, respectively, and the lower end is connected to the main hook hook head;

[0027] (2) The calculation formula for the horizontal deviation of the wire rope is:

[0028] L=2ПDβ / 360

[0029] Where: L is the horizontal offset of a point on the wire rope relative to the original position, in CM;

[0030] D is the vertical distance between the original position of a point and the plane of the trolley, in CM;

[0031] β is the tilt angle;

[0032] (3) When the main hook wire rope tilts to the set tilt warning angle, the tilt detection relay coil connected to the main hook wire rope front tilt detection photoelectric switch group and the main hook wire rope rear tilt detection photoelectric switch group is energized and actuated, so that the tilt warning relay coil is energized and actuated, and the tilt warning buzzer sounds an alarm to remind the crane operator to correct the operation in time to avoid accidents; when the auxiliary hook wire rope tilts, the detection action process of the device is the same as the tilt of the main hook wire rope.

[0033] The auxiliary hook wire rope rear inclination detection photoelectric switch group and the auxiliary hook wire rope front inclination detection photoelectric switch group are installed 1 meter below the auxiliary trolley, 50CM on the left and right sides of the auxiliary hook wire rope; the main hook wire rope front inclination detection photoelectric switch group and the main hook wire rope rear inclination detection photoelectric switch group are installed 1 meter below the main trolley, 50CM on the left and right sides of the main hook wire rope.

[0034] In actual application, the vertical distance between the lowest point of the overhead crane sliding line and the plane of the main and auxiliary trolleys is about 7 meters. Taking the backward tilt of the auxiliary hook wire rope as an example, when the scrap steel bucket is charged, when the auxiliary hook wire rope tilts backward at an angle of 1 degree, the horizontal distance between the auxiliary hook wire rope and the lowest point of the overhead crane sliding line (where 12.2CM is the horizontal offset of the auxiliary hook wire rope at 7 meters) is 60-12.2=47.8cm; when the auxiliary hook wire rope tilts backward at an angle of 2 degrees, the horizontal distance between the auxiliary hook wire rope and the lowest point of the overhead crane sliding line (where 24.4CM is the horizontal offset of the auxiliary hook wire rope at 7 meters) is 60-24.4=35.6cm; when the auxiliary hook wire rope tilts backward at an angle of 5 degrees, the horizontal distance between the auxiliary hook wire rope and the lowest point of the overhead crane sliding line (where 61CM is the horizontal offset of the auxiliary hook wire rope at 7 meters) is 60-61=-1cm, that is, the sliding line has collided with the sliding line.

[0035] In the above-mentioned overhead crane wire rope tilt warning device and method, the main and auxiliary hook wire rope tilt detection transmitting end photoelectric switch and receiving end photoelectric switch are respectively installed below the main and auxiliary trolleys, 50CM on the east and west sides of the wire rope. When the vertical distance of the installation is too close to the bottom of the trolley, the displacement caused by the angle change is too small, and the wire rope tilt detection transmitting end photoelectric switch and receiving end photoelectric switch are installed on the east and west sides of the wire rope, 1 meter below the trolley. Take the backward tilt of the auxiliary hook wire rope as an example. When the auxiliary hook wire rope tilts backward at an angle of 1 degree, the horizontal deflection displacement of the auxiliary hook wire rope at 1 meter is 1.7cm, and the horizontal deflection displacement of the auxiliary hook wire rope at the lowest point of the sliding line is 12.2cm; when the auxiliary hook wire rope tilts backward at an angle of 2 degrees, the horizontal deflection displacement of the auxiliary hook wire rope at 1 meter is 3.4cm, and the horizontal deflection displacement of the auxiliary hook wire rope at the lowest point of the sliding line is 24.4cm; when the auxiliary hook wire rope tilts backward at an angle of 5 degrees, the horizontal deflection displacement of the wire rope at 1 meter of the auxiliary hook is 8.7cm, and the horizontal deflection displacement of the auxiliary hook wire rope at the lowest point of the sliding line is 61cm. Therefore, the transmitting end photoelectric switch and the receiving end photoelectric switch of the auxiliary hook wire rope tilt detection are installed at 50CM on the east and west sides of the auxiliary hook wire rope, 1 meter below the trolley, and at a position with a displacement of 3.4CM to the north. That is, when the auxiliary hook wire rope inclination reaches or exceeds 2 degrees, the photoelectric switch detects the auxiliary hook wire rope blocking signal, indicating that the auxiliary hook wire rope is tilted, and immediately sends an auxiliary hook wire rope inclination warning signal to the crane operator to correct the operation in time. At this time, the inclination displacement of the auxiliary hook wire rope at the lowest point of the slide line is 24.4cm, which is sufficient to maintain a safe distance from the slide line.

[0036] like Figure 3 , the main hook wire rope front tilt detection photoelectric switch normally open contact 24 and the main hook wire rope front tilt detection relay 28 coil are connected;

[0037] The normally open contact 23 of the photoelectric switch for detecting the rear inclination of the main hook wire rope is connected to the coil of the relay 27 for detecting the rear inclination of the main hook wire rope;

[0038] The normally open contact 22 of the auxiliary hook wire rope front tilt detection photoelectric switch is connected to the coil of the auxiliary hook wire rope front tilt detection relay 26;

[0039] The normally open contact 21 of the auxiliary hook wire rope rear inclination detection photoelectric switch is connected to the coil of the auxiliary hook wire rope rear inclination detection relay 25;

[0040] The main hook wire rope front tilt detection relay normally open contact 29 is connected to the tilt warning relay 34 coil;

[0041] The normally open contact 30 of the main hook wire rope rear tilt detection relay is connected to the coil of the tilt warning relay 34;

[0042] The normally open contact 31 of the auxiliary hook wire rope front tilt detection relay is connected to the coil of the tilt warning relay 34;

[0043] The normally open contact 32 of the auxiliary hook wire rope rear tilt detection relay is connected to the coil of the tilt warning relay 34;

[0044] The normally open delayed disconnect contact 33 of the tilt warning relay is connected to the tilt warning buzzer 35 .

[0045] The working process of the present invention is as follows:

[0046] Here we take the backward tilt of the auxiliary hook wire rope as an example for explanation; the working processes of the auxiliary hook wire rope forward tilt, the main hook wire rope backward tilt, and the main hook wire rope forward tilt are similar.

[0047] During the operation of the overhead crane, when the rear inclination of the auxiliary hook wire rope reaches a preset inclination warning angle (the angle is set to 2 degrees here), the photoelectric switch 20 at the auxiliary hook wire rope rear inclination detection receiving end cannot receive the signal of the photoelectric switch 18 at the auxiliary hook wire rope rear inclination detection transmitting end, the normally open contact 21 of the auxiliary hook wire rope rear inclination detection photoelectric switch is closed, the coil of the auxiliary hook wire rope rear inclination detection relay 25 is energized and actuated, the normally open contact 32 of the auxiliary hook wire rope rear inclination detection relay is closed, the coil of the inclination warning relay 34 is energized and actuated, the normally open delayed disconnect contact 33 of the inclination warning relay is closed, and the inclination warning buzzer 35 is energized to emit a warning sound alarm to remind the overhead crane operator to correct the operation and avoid slipping line and blasting accidents. If the backward tilt of the auxiliary hook wire rope reaches the preset tilt warning angle (the angle is set to 2 degrees here) and is instantly greater than the warning angle, the normally open delayed disconnection contact 33 of the tilt warning relay closes and then disconnects after the set delay time, ensuring that in this case the tilt warning buzzer 35 is energized and the warning sound alarm will have a duration, rather than a pulse warning sound alarm that is easily ignored by the crane operator, ensuring that the crane operator can be reminded to correct the operation.

Claims

1. A crane wire rope tilt warning device, characterized in that: It comprises a photoelectric switch baffle group (3) for detecting the front tilt of the auxiliary hook wire rope, a photoelectric switch baffle group (4) for detecting the rear tilt of the auxiliary hook wire rope, a photoelectric switch group (5) for detecting the rear tilt of the auxiliary hook wire rope, a photoelectric switch group (6) for detecting the front tilt of the auxiliary hook wire rope, a photoelectric switch baffle group (11) for detecting the rear tilt of the main hook wire rope, a photoelectric switch baffle group (12) for detecting the front tilt of the main hook wire rope, a photoelectric switch group (13) for detecting the front tilt of the main hook wire rope, a photoelectric switch group (14) for detecting the rear tilt of the main hook wire rope, and a relay (25) for detecting the rear tilt of the auxiliary hook wire rope , a secondary hook wire rope front tilt detection relay (26), a main hook wire rope rear tilt detection relay (27), a main hook wire rope front tilt detection relay (28), a tilt warning relay (34) and a tilt warning buzzer (35); the secondary trolley (1) and the main trolley (10) are installed above the trolley beam (2); the secondary hook wire rope front tilt detection photoelectric switch baffle group (3) and the secondary hook wire rope rear tilt detection photoelectric switch baffle group (4) are installed below the secondary trolley (1); the secondary hook wire rope rear tilt detection photoelectric switch group (5) is installed on the secondary hook wire rope The photoelectric switch baffle group (4) for detecting the rear inclination of the wire rope of the auxiliary hook is installed on the photoelectric switch baffle group (6) for detecting the front inclination of the wire rope of the auxiliary hook; the photoelectric switch baffle group (11) for detecting the rear inclination of the wire rope of the main hook and the photoelectric switch baffle group (12) for detecting the front inclination of the wire rope of the main hook are installed under the main trolley (10); the photoelectric switch group (14) for detecting the rear inclination of the wire rope of the main hook is installed on the photoelectric switch baffle group (11) for detecting the rear inclination of the wire rope of the main hook; and the photoelectric switch group (13) for detecting the front inclination of the wire rope of the main hook is installed on the photoelectric switch baffle group (11) for detecting the rear inclination of the wire rope of the main hook. The main hook wire rope is connected to the photoelectric switch baffle group (12) for detecting the front tilt of the main hook wire rope; the upper end of the auxiliary hook wire rope is connected to the photoelectric switch baffle group (3) for detecting the front tilt of the auxiliary hook wire rope and the photoelectric switch baffle group (4) for detecting the rear tilt of the auxiliary hook wire rope, and the lower end of the auxiliary hook wire rope is connected to the auxiliary hook head (9); the upper end of the main hook wire rope (15) is connected to the photoelectric switch baffle group (11) for detecting the rear tilt of the main hook wire rope and the photoelectric switch baffle group (12) for detecting the front tilt of the main hook wire rope, and the lower end of the main hook wire rope (15) is connected to the main hook head (16); The auxiliary hook wire rope rear tilt detection photoelectric switch group (5) is connected to the tilt warning relay (34) through the auxiliary hook wire rope rear tilt detection relay (25), the auxiliary hook wire rope front tilt detection photoelectric switch group (6) is connected to the tilt warning relay (34) through the auxiliary hook wire rope front tilt detection relay (26), the main hook wire rope front tilt detection photoelectric switch group (13) is connected to the tilt warning relay (34) through the main hook wire rope front tilt detection relay (28), the main hook wire rope rear tilt detection photoelectric switch group (14) is connected to the tilt warning relay (34) through the main hook wire rope rear tilt detection relay (27), and the output end of the tilt warning relay (34) is connected to the tilt warning buzzer (35).

2. The crane wire rope tilt warning device according to claim 1, characterized in that: The auxiliary hook wire rope rear inclination detection photoelectric switch baffle group (4) comprises an auxiliary hook wire rope rear inclination detection transmitting end photoelectric switch baffle (17) and an auxiliary hook wire rope rear inclination detection receiving end photoelectric switch baffle (19); the auxiliary hook wire rope rear inclination detection photoelectric switch group (5) comprises an auxiliary hook wire rope rear inclination detection transmitting end photoelectric switch (18) and an auxiliary hook wire rope rear inclination detection receiving end photoelectric switch (20); the auxiliary hook wire rope rear inclination detection transmitting end photoelectric switch (18) is mounted on the auxiliary hook wire rope rear inclination detection transmitting end photoelectric switch baffle (17), and the auxiliary hook wire rope rear inclination detection receiving end photoelectric switch (20) is mounted on the auxiliary hook wire rope rear inclination detection receiving end photoelectric switch baffle (19).

3. A method for warning the inclination of a crane wire rope, using the crane wire rope inclination warning device according to claim 1 or 2, characterized in that Contains the following steps: (1) The auxiliary hook wire rope rear inclination detection photoelectric switch group and the auxiliary hook wire rope front inclination detection photoelectric switch group are installed under the auxiliary trolley, and the main hook wire rope front inclination detection photoelectric switch group and the main hook wire rope rear inclination detection photoelectric switch group are installed under the main trolley; the upper end of the auxiliary hook wire rope is connected to the main hook wire rope front inclination detection photoelectric switch group and the main hook wire rope rear inclination detection photoelectric switch group, respectively, and the lower end is connected to the auxiliary hook hook head; the upper end of the main hook wire rope is connected to the main hook wire rope front inclination detection photoelectric switch group and the main hook wire rope rear inclination detection photoelectric switch group, respectively, and the lower end is connected to the main hook hook head; (2) The calculation formula for the horizontal deviation of the wire rope is: L=2ПDβ / 360 Where: L is the horizontal offset of a point on the wire rope relative to the original position, in CM; D is the vertical distance between the original position of a point and the plane of the trolley, in CM; β is the tilt angle; (3) When the main hook wire rope tilts to the set tilt warning angle, the tilt detection relay coil connected to the main hook wire rope front tilt detection photoelectric switch group and the main hook wire rope rear tilt detection photoelectric switch group is energized and actuated, so that the tilt warning relay coil is energized and actuated, and the tilt warning buzzer sounds an alarm to remind the crane operator to correct the operation in time to avoid accidents; when the auxiliary hook wire rope tilts, the detection action process of the device is the same as the tilt of the main hook wire rope.

4. A method for warning the inclination of a crane wire rope according to claim 3, characterized in that: The auxiliary hook wire rope rear inclination detection photoelectric switch group and the auxiliary hook wire rope front inclination detection photoelectric switch group are installed 1 meter below the auxiliary trolley, 50CM on the left and right sides of the auxiliary hook wire rope; the main hook wire rope front inclination detection photoelectric switch group and the main hook wire rope rear inclination detection photoelectric switch group are installed 1 meter below the main trolley, 50CM on the left and right sides of the main hook wire rope.

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