Device for preventing inclined pulling and pulling of travelling crane

Abstract

The utility model discloses an inclined pulling prevention device for a travelling crane, which relates to the technical field of travelling cranes and comprises a fixing plate, the fixing plate is of a U-shaped structure, an infrared sensor is mounted on the side surface of the lower part of one end of the fixing plate, a galvanized iron plate is mounted on the lower side of the infrared sensor, and a reflective sticker is adhered to the upper side surface of the galvanized iron plate. Through the arrangement of the infrared sensor, the steel cable lock clamp, the galvanized iron plate and the reflective sticker, when the steel cable is vertical, laser emitted by the infrared sensor is vertically irradiated to the center of the reflective sticker, the laser is irradiated to the infrared sensor after being reflected, and the infrared sensor monitors that the steel cable is vertical; when the electric hoist is lifted, laser emitted by the infrared sensor cannot irradiate the reflective sticker, then the infrared sensor cannot receive a reflected laser signal, and an alarm and power-off signal is sent out, so that the electric hoist is powered off, the lifting operation is stopped, and the risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a crane anti-skew pulling and slanting device. Background Art

[0002] A crane is a common name for cranes, overhead cranes, and overhead cranes. Cranes are essentially the same as what we call cranes. There are two basic types of crane drive systems: centralized drive, where a single electric motor drives a long drive shaft that drives two driving wheels; and separate drive, where each driving wheel is driven by a separate electric motor. Small and medium-sized bridge cranes often use a "three-in-one" drive system that combines a brake, a speed reducer, and an electric motor. Large-capacity, standard bridge cranes often use a universal joint for ease of installation and adjustment.

[0003] When the existing crane is in operation, the steel cable on the lower side of the crane is prone to tilting and pulling during the lifting process. The lack of an effective monitoring device increases the risk of the steel cable being pulled up and prevents the crane from stopping the lifting operation in time. Utility Model Content

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a driving anti-skew pulling and slanting device. By arranging an infrared sensor, a steel cable lock clamp, a galvanized iron plate and a reflective sticker, when the steel cable is vertical, the laser emitted by the infrared sensor is vertically irradiated on the center of the reflective sticker. After the laser is reflected, it irradiates the infrared sensor, so that the infrared sensor detects that the steel cable is vertical. When the steel cable tilts to one side by more than ten degrees, the laser emitted by the infrared sensor cannot irradiate the reflective sticker, and then the infrared sensor cannot receive the reflected laser signal, and then sends out an alarm and a power-off signal, so that the electric hoist is powered off and the lifting operation is stopped, thereby reducing the risk and effectively solving the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a driving anti-skew pulling and slanting device includes a fixing plate, the fixing plate is a U-shaped structure, an infrared sensor is installed on the lower side of one end of the fixing plate, a galvanized iron plate is installed on the lower side of the infrared sensor, a reflective sticker is pasted on the side of the galvanized iron plate, a steel cable lock clamp is installed on one side of the galvanized iron plate, a monitoring sensor is installed on the lower side of the other end of the fixing plate, the lower side of the monitoring sensor is connected to a guide ring through a spring, and the side of the monitoring sensor is connected to a wire.

[0006] Furthermore, a fixed pulley is provided on one side of the fixed plate, a steel cable is wound around the fixed pulley, and an electric hoist is installed on the upper side of the fixed pulley.

[0007] Furthermore, an insulating limiting wheel for limiting the position of the wire is installed on the lower side of the fixing plate, and the guide ring is connected to an electrode of the monitoring sensor.

[0008] Furthermore, the wire is connected to another electrode of the monitoring sensor, and the galvanized iron plate is fixedly connected to the steel cable lock clamp.

[0009] Furthermore, the galvanized iron plate is perpendicular to the steel cable, and the infrared sensor and the monitoring sensor are both fixed on the fixed plate.

[0010] Furthermore, the insulating limiting wheel includes two wheels, one large and one small, and the guide ring is sleeved on the outside of the steel cable.

[0011] Furthermore, the cable lock clip is clamped on the outer side of the cable, and the laser of the infrared sensor is perpendicular to the center of the reflective sticker.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model uses an infrared sensor, a steel cable lock clamp, a galvanized iron plate and a reflective sticker to ensure that when the steel cable is vertical, the laser emitted by the infrared sensor is vertically irradiated on the center of the reflective sticker. After the laser is reflected, it shines on the infrared sensor, so that the infrared sensor detects that the steel cable is vertical. When the steel cable tilts to one side by more than ten degrees, the laser emitted by the infrared sensor cannot shine on the reflective sticker, and the infrared sensor cannot receive the reflected laser signal, and then sends out an alarm and a power-off signal, so that the electric hoist is powered off and the lifting operation is stopped, thereby reducing the risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the top view of the cable lock clamp in the utility model;

[0016] Figure 3 For this utility model Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0017] In the figure: 1. Electric hoist; 2. Fixed pulley; 3. Fixed plate; 4. Steel cable; 5. Guide ring; 6. Infrared sensor; 7. Steel cable lock clamp; 8. Galvanized iron plate; 9. Reflective sticker; 10. Monitoring sensor; 11. Wire; 12. Insulated limit wheel. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-3 This embodiment provides a technical solution: a driving anti-skew pulling device includes a fixing plate 3, which has a U-shaped structure. An infrared sensor 6 is installed on the lower side of one end of the fixing plate 3, a galvanized iron plate 8 is installed on the lower side of the infrared sensor 6, a reflective sticker 9 is pasted on the upper side of the galvanized iron plate 8, and a steel cable lock clamp 7 is installed on one side of the galvanized iron plate 8. A monitoring sensor 10 is installed on the lower side of the other end of the fixing plate 3, a guide ring 5 is connected to the lower side of the monitoring sensor 10 through a spring, and a wire 11 is connected to the side of the monitoring sensor 10.

[0020] like Figure 1-3 As shown, when the crane is lifting objects, the steel cable 4 wrapped around the fixed pulley 2 is prone to swing back and forth under the action of the lower cargo, causing the steel cable 4 to tilt. When the steel cable 4 deviates from the center of gravity and tilts more than ten degrees, the laser emitted by the infrared sensor 6 cannot illuminate the reflective sticker 9, and the infrared sensor 6 cannot receive the reflected laser signal, so that the control module detects that the steel cable 4 is tilted at a large angle, and then promptly cuts off the power to the electric hoist 1 to reduce the danger when lifting goods. When the steel cable 4 tilts, the steel cable 4 contacts the guide ring 5, so that the monitoring circuit on the monitoring sensor 10 is closed, and then the signal that the steel cable 4 is shaking and tilting is received.

[0021] A fixed pulley 2 is provided on one side of the fixed plate 3 , a steel cable 4 is wound around the fixed pulley 2 , and an electric hoist 1 is installed on the upper side of the fixed pulley 2 .

[0022] An insulating limiting wheel 12 for limiting the position of the wire 11 is installed on the lower side of the fixing plate 3 , and the guide ring 5 is connected to an electrode of the monitoring sensor 10 .

[0023] The wire 11 is connected to the other electrode of the monitoring sensor 10 , and the galvanized iron plate 8 is fixedly connected to the cable lock clamp 7 .

[0024] The galvanized iron plate 8 is perpendicular to the steel cable 4 , and the infrared sensor 6 and the monitoring sensor 10 are both fixed on the fixing plate 3 .

[0025] The insulating limiting wheel 12 includes two wheels, one large and one small, and the guide ring 5 is sleeved on the outside of the steel cable 4.

[0026] The cable lock clip 7 is clamped on the outer side of the cable 4 , and the laser of the infrared sensor 6 is perpendicular to the center of the reflective sticker 9 .

[0027] The working principle of the anti-skew pulling device provided by the utility model is as follows: Figure 1-Figure 3 As shown, when in use, when the vehicle is lifting objects, the steel cable 4 wrapped around the fixed pulley 2 is prone to swing back and forth under the action of the lower cargo, causing the steel cable 4 to tilt. When the steel cable 4 deviates from the center of gravity and tilts more than ten degrees, the laser emitted by the infrared sensor 6 cannot illuminate the reflective sticker 9, and the infrared sensor 6 cannot receive the reflected laser signal, so that the control module detects that the steel cable 4 is tilted at a large angle, and then promptly cuts off the power to the electric hoist 1 to reduce the danger when the cargo is lifted. When the steel cable 4 tilts, the steel cable 4 contacts the guide ring 5, so that the monitoring circuit on the monitoring sensor 10 is closed, and then a signal that the steel cable 4 is shaking and tilting is received.

[0028] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A device for preventing the vehicle from tilting and pulling, comprising a fixing plate (3), characterized in that: The fixing plate (3) is a U-shaped structure. An infrared sensor (6) is installed on the lower side of one end of the fixing plate (3). A galvanized iron plate (8) is installed on the lower side of the infrared sensor (6). A reflective sticker (9) is pasted on the upper side of the galvanized iron plate (8). A steel cable lock clamp (7) is installed on one side of the galvanized iron plate (8). A monitoring sensor (10) is installed on the lower side of the other end of the fixing plate (3). The lower side of the monitoring sensor (10) is connected to a guide ring (5) through a spring. The side of the monitoring sensor (10) is connected to a wire (11).

2. The anti-skew pulling device for a vehicle according to claim 1, characterized in that: A fixed pulley (2) is provided on one side of the fixed plate (3), a steel cable (4) is wound around the fixed pulley (2), and an electric hoist (1) is installed on the upper side of the fixed pulley (2).

3. The anti-skew pulling device for a vehicle according to claim 2, characterized in that: An insulating limiting wheel (12) for limiting the position of the conducting wire (11) is installed on the lower side of the fixing plate (3), and the guide ring (5) is connected to an electrode of the monitoring sensor (10).

4. The anti-skew pulling device for a vehicle according to claim 1, characterized in that: The wire (11) is connected to the other electrode of the monitoring sensor (10), and the galvanized iron plate (8) is fixedly connected to the steel cable lock clamp (7).

5. The anti-skew pulling device for a vehicle according to claim 1, characterized in that: The galvanized iron plate (8) is perpendicular to the steel cable (4), and the infrared sensor (6) and the monitoring sensor (10) are both fixed on the fixing plate (3).

6. The anti-skew pulling device for a vehicle according to claim 3, characterized in that: The insulating limiting wheel (12) comprises two wheels, one large and one small, and the guide ring (5) is sleeved on the outside of the steel cable (4).

7. The anti-skew pulling device for a vehicle according to claim 1, characterized in that: The cable lock clamp (7) is clamped on the outer side of the cable (4), and the laser of the infrared sensor (6) is perpendicular to the center of the reflective sticker (9).

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