Anti-collision device for a portal crane

Abstract

The utility model discloses a portal jib crane anti -collision device relates to portal jib crane technical field, a portal jib crane anti -collision device, include: base, install the outer surface top of base, mobile slot, a plurality of groups, set up in the outer surface top of install the plate, positioning shaft, slidingly installed in the inside of mobile slot, install the block, and insert in the axle surface middle end of positioning shaft, through install the plate, mobile slot, positioning shaft, install the block, anti -collision buffer pad, reset spring, buffer board and high -tension rope's cooperation and matching, effectively solved the problem of the insufficient protection of the portal jib crane portal of existing, when the driver operation inattentive leads to the collision of crane and portal, anti -collision buffer pad absorbs the impact energy first, and positioning shaft slides in mobile slot and compresses reset spring and buffers, and simultaneously, the buffer board further dissipates the impact force through the tensile deformation of high -tension rope, forms multistage protection mechanism.

Description

Technical Field

[0001] This utility model relates to the field of gantry crane technology, and specifically to a gantry crane anti-collision device. Background Technology

[0002] Gantry cranes are a type of bridge crane, also known as portal cranes. They are mainly used for loading and unloading cargo and bulk materials in outdoor freight yards and material yards. Gantry cranes have the characteristics of high site utilization, large operating range, wide adaptability and strong versatility. They are widely used in port freight yards. Sometimes, for the convenience of loading and unloading, two trolleys are set on the same main beam. In order to prevent the two trolleys from colliding, anti-collision devices are needed.

[0003] Existing gantry cranes have certain deficiencies in gantry protection. If the operator is negligent, a collision with the gantry may occur. In such cases, the gantry is easily damaged, and in severe cases, it may even cause the crane to collapse, posing a potential threat to the lives of the operators. Utility Model Content

[0004] To solve the above-mentioned technical problems, a gantry crane anti-collision device is provided. This technical solution solves the problem of easy damage to the gantry mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A gantry crane anti-collision device includes:

[0007] Base;

[0008] The mounting plate is installed on the top of the outer surface of the base;

[0009] Several sets of movable slots are formed on the top of the outer surface of the mounting plate;

[0010] The positioning shaft is slidably mounted inside the moving slot;

[0011] The mounting block is inserted into the middle of the shaft surface of the positioning shaft;

[0012] A collision-resistant buffer pad is fixedly installed on the front end of the outer surface of the mounting block; a return spring is fixedly installed inside the moving groove, and one end of the outer surface of the return spring is installed on the rear end of the positioning shaft.

[0013] A buffer plate is disposed on the outer surface of the base at the rear end of the mounting block;

[0014] Several sets of high-tensile ropes abut against the buffer plate at the rear end of their outer surface. Preferably, positioning rods are installed on the left and right ends of the front surface of the base.

[0015] The mounting rod is inserted into the shaft surface of the positioning rod;

[0016] A horizontal plate is installed on the opposite side of the outer surface of the two sets of mounting rods;

[0017] A reflector is mounted on the front end of the outer surface of the mounting rod.

[0018] Preferably, several sets of positioning components are installed at different heights on the rear end of the outer surface of the horizontal plate, and a high-tensile rope is sleeved inside the positioning component.

[0019] The display screen is installed at the center of the front end of the outer surface of the horizontal plate;

[0020] A laser rangefinder is mounted on the front end of the outer surface of the horizontal plate, located on one side of the display screen.

[0021] Preferably, an airbag is installed on the front part of the outer surface of the buffer plate at the rear of the mounting block, and an air whistle is installed on the bottom end of the outer surface of the airbag through the outer surface of the buffer plate. An anti-collision buffer pad is fixedly installed on the front end of the outer surface of the mounting block.

[0022] Preferably, a mounting box is fixedly installed on the rear end of the outer surface of the mounting plate, a positioning plate is snapped into the front end of the inner side of the mounting box, two sets of telescopic rods are fixedly installed on the rear end of the outer surface of the positioning plate, and a damper is installed on one side of the telescopic rods at the rear end of the outer surface of the positioning plate.

[0023] Preferably, inclined toothed plates are fixedly installed on the left and right sides of the rear end of the outer surface of the positioning plate, and a positioning pin is fixedly installed inside the mounting box directly opposite the inclined toothed plates, with the front end of the outer surface of the positioning pin abutting against the inclined toothed plates.

[0024] Preferably, U-shaped clamps are provided on the left and right sides of the front end of the outer surface of the positioning plate, and the U-shaped clamps and the outer surface of the positioning plate are installed by hydraulic bolts. A shock-absorbing rubber pad is fixedly installed inside the U-shaped clamps, and a fixing column is fixedly installed at the bottom of the outer surface of the base.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] This solution proposes a collision avoidance device for gantry cranes. Through the coordinated operation of a mounting plate, a moving groove, a positioning shaft, a mounting block, a collision buffer pad, a return spring, a buffer plate, and high-tension ropes, it effectively solves the problem of insufficient protection for the gantry frame of existing gantry cranes. When operator negligence causes a collision between the crane and the gantry, the collision buffer pad first absorbs the impact energy. The positioning shaft slides within the moving groove and compresses the return spring for cushioning. Simultaneously, the buffer plate further dissipates the impact force through the tensile deformation of the high-tension ropes, forming a multi-level protection mechanism. This significantly reduces the risk of gantry frame damage, prevents crane collapse accidents, and ensures the safety of operators. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the buffer assembly in this utility model;

[0029] Figure 3 This is a schematic diagram of the airbag assembly in this utility model;

[0030] Figure 4 This is a schematic diagram of the anti-collision buffer pad in this utility model.

[0031] The numbers on the map are:

[0032] 1. Base; 2. Fixing column; 3. Mounting box; 4. Mounting plate; 5. Mounting rod; 6. Reflector; 7. Laser rangefinder; 8. Display screen; 9. Positioning rod; 10. Horizontal plate; 11. Positioning component; 12. High-tensile rope; 13. Buffer plate; 14. Air whistle; 15. Airbag; 16. Moving groove; 17. Return spring; 18. Positioning shaft; 19. Mounting block; 20. Anti-collision buffer pad; 21. Positioning plate; 22. U-shaped clamp; 23. Hydraulic bolt; 24. Positioning pin; 25. Damper; 26. Telescopic rod; 27. Helical toothed plate; 28. Shock-absorbing rubber pad. Detailed Implementation

[0033] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0034] Reference Figures 1-4As shown, a gantry crane anti-collision device includes: a base 1, an mounting plate 4 installed on the top of the outer surface of the base 1, a plurality of moving grooves 16 formed on the top of the outer surface of the mounting plate 4, a positioning shaft 18 slidably installed inside the moving grooves 16, a mounting block 19 inserted into the middle of the shaft surface of the positioning shaft 18, an anti-collision buffer pad 20 fixedly installed on the front end of the outer surface of the mounting block 19, a return spring 17 fixedly installed inside the moving grooves 16, and one end of the outer surface of the return spring 17 is installed at the rear end of the positioning shaft 18, and a buffer plate 13 is provided on the outer surface of the base 1 at the rear end of the mounting block 19. Several sets of high-tension ropes 12 are attached to the rear end of the outer surface of the punch plate 13. Positioning rods 9 are installed on the left and right ends of the front side of the outer surface of the base 1. Mounting rods 5 are inserted into the shaft surface of the positioning rods 9. A horizontal plate 10 is installed on the opposite side of the outer surface of the two sets of mounting rods 5. A reflector 6 is installed on the front end of the outer surface of the mounting rods 5. Several sets of positioning parts 11 are installed at different heights on the rear end of the outer surface of the horizontal plate 10. High-tension ropes 12 are sleeved inside the positioning parts 11. A display screen 8 is installed in the middle of the front end of the outer surface of the horizontal plate 10. A laser rangefinder 7 is set on one side of the display screen 8 on the front end of the outer surface of the horizontal plate 10.

[0035] The above scheme uses a base 1 as the basic frame, with a fixed mounting plate 4 on top. Multiple sets of movable slots 16 are formed on the plate, and positioning shafts 18 are slidably installed within these slots, with return springs 17 providing rebound force. A mounting block 19 is inserted into the middle of the positioning shaft 18, and a collision buffer pad 20 is installed at its front end as the primary energy absorption unit. A buffer plate 13 is positioned behind the mounting block 19, with its rear end supported by multiple sets of diagonally tensioned high-tensile ropes 12, forming a secondary energy dissipation structure. Positioning rods 9 are symmetrically installed on the left and right sides of the front of the base 1, with mounting rods 5 inserted on them to support a horizontal plate 10. A reflector 6 is installed at the front end of the mounting rods 5 to enhance warning. The horizontal plate 10 integrates a laser rangefinder 7 to monitor the distance to obstacles in real time, and the data is fed back to the driver via a display screen 8, achieving proactive pre-collision warning.

[0036] Reference Figure 2-4As shown, an airbag 15 is installed at the front end of the outer surface of the buffer plate 13, located at the rear of the mounting block 19. An air whistle 14 is installed at the bottom end of the outer surface of the airbag 15, penetrating the outer surface of the buffer plate 13. An anti-collision buffer pad 20 is fixedly installed at the front end of the outer surface of the mounting block 19. An mounting box 3 is fixedly installed at the rear end of the outer surface of the mounting plate 4. A positioning plate 21 is snapped into the front end of the interior of the mounting box 3. Two sets of telescopic rods are fixedly installed at the rear end of the outer surface of the positioning plate 21. 26. A damper 25 is installed on the rear end of the outer surface of the positioning plate 21 at one side of the telescopic rod 26. A helical tooth plate 27 is fixedly installed on the left and right sides of the rear end of the outer surface of the positioning plate 21. A positioning pin 24 is fixedly installed inside the mounting box 3 directly opposite the helical tooth plate 27, and the front end of the outer surface of the positioning pin 24 abuts against the helical tooth plate 27. U-shaped clamps 22 are provided on the left and right sides of the front end of the outer surface of the positioning plate 21. The U-shaped clamps 22 and the outer surface of the positioning plate 21 are installed by hydraulic bolts 23. A shock-absorbing rubber pad 28 is fixedly installed inside the U-shaped clamps 22. A fixing column 2 is fixedly installed at the bottom of the outer surface of the base 1.

[0037] With the above scheme, an airbag 15 and an air whistle 14 are set at the front end of the buffer plate 13. When impacted, the airbag 15 expands rapidly and triggers the air whistle 14 to alarm. An installation box 3 is added to the rear of the mounting plate 4. The internal structure consists of a positioning plate 21, a telescopic rod 26 and a damper 25 to form a three-stage buffer system. The helical tooth plate 27 at the rear end of the positioning plate 21 engages with the positioning pin 24 to ensure a smooth buffering process. The U-shaped clamp 22 is firmly fixed to the crane structure by hydraulic bolts 23 and shock-absorbing rubber pads 28 to achieve vibration isolation. This combination design allows the anti-collision device to absorb energy in stages when it is impacted (the anti-collision buffer pad 20 absorbs energy in the first stage → the buffer plate 13 and the high-tension rope 12 dissipate energy in the second stage → the three-stage buffer system in the installation box 3 provides the final shock absorption), while maintaining a reliable connection with the crane body.

[0038] Working principle and implementation: The device is fixed to the crane gantry or end beam by U-shaped clamps 22 and hydraulic bolts 23. The shock-absorbing rubber pads 28 reduce vibration transmission. The positioning plate 21 in the mounting box 3 adjusts the preload of the buffer system through the telescopic rod 26 and damper 25 to ensure a stable connection. The laser rangefinder 7 detects the distance between the vehicle and the equipment in real time, and the data is displayed on the display screen 8 to provide early warning of collision risks. The reflector 6 enhances the warning effect at night or in low visibility environments. During the collision buffering process, the impact force acts on the anti-collision device. The buffer pad 20 pushes the mounting block 19 and the positioning shaft 18 to slide along the moving groove 16, compressing the return spring 17 to absorb energy. The remaining impact force is transmitted to the buffer plate 13, which further dissipates energy through the stretching deformation of the high-tension rope 12. If the impact is strong, the airbag 15 expands and triggers the air whistle 14 to alarm. At the same time, the damper 25 and the telescopic rod 26 in the mounting box 3 work together to absorb the residual impact. After the impact ends, the return spring 17 pushes the positioning shaft 18 back to its original position, and the helical tooth plate 27 engages with the positioning pin 24 to ensure structural stability. The device returns to its initial state.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A collision avoidance device for a gantry crane, characterized in that, include: Base (1); Mounting plate (4) is mounted on the top of the outer surface of the base (1); Several sets of movable slots (16) are formed on the top of the outer surface of the mounting plate (4); The positioning shaft (18) is slidably mounted inside the moving groove (16); Mounting block (19) is inserted into the middle end of the shaft surface of the positioning shaft (18); The anti-collision buffer pad (20) is fixedly installed on the front end of the outer surface of the mounting block (19); the return spring (17) is fixedly installed inside the moving groove (16), and one end of the outer surface of the return spring (17) is installed on the rear end of the positioning shaft (18); A buffer plate (13) is disposed on the outer surface of the base (1) at the rear end of the mounting block (19); Several sets of high-tensile ropes (12) abut against the buffer plate (13) at the rear end of their outer surfaces.

2. The anti-collision device for a gantry crane according to claim 1, characterized in that: Positioning rods (9) are installed on the left and right ends of the front surface of the base (1); The mounting rod (5) is inserted into the shaft surface of the positioning rod (9); A horizontal plate (10) is installed on the opposite side of the outer surface of the two sets of mounting rods (5); A reflector (6) is installed on the front end of the outer surface of the mounting rod (5).

3. The anti-collision device for a gantry crane according to claim 2, characterized in that: Positioning components (11), several sets, are installed at different heights on the rear end of the outer surface of the horizontal plate (10), and a high-tension rope (12) is sleeved inside the positioning component (11). The display screen (8) is installed at the center of the front end of the outer surface of the horizontal plate (10); A laser rangefinder (7) is located on the front end of the outer surface of the horizontal plate (10) on one side of the display screen (8).

4. The anti-collision device for a gantry crane according to claim 1, characterized in that: An airbag (15) is installed on the front part of the outer surface of the buffer plate (13) at the rear of the mounting block (19). An air whistle (14) is installed on the bottom end of the outer surface of the airbag (15) through the outer surface of the buffer plate (13). An anti-collision buffer pad (20) is fixedly installed on the front end of the outer surface of the mounting block (19).

5. The anti-collision device for a gantry crane according to claim 1, characterized in that: The mounting plate (4) has a mounting box (3) fixedly installed at the rear end of its outer surface. The mounting box (3) has a positioning plate (21) snapped into its inner front end. The positioning plate (21) has two sets of telescopic rods (26) fixedly installed at the rear end of its outer surface. The positioning plate (21) has a damper (25) installed at the rear end of its outer surface on one side of the telescopic rods (26).

6. The anti-collision device for a gantry crane according to claim 5, characterized in that: The outer surface of the positioning plate (21) is fixedly installed with inclined tooth plates (27) on the left and right sides of the rear end. The mounting box (3) is fixedly installed with a positioning pin (24) facing the inclined tooth plate (27) inside, and the front end of the outer surface of the positioning pin (24) abuts against the inclined tooth plate (27).

7. A gantry crane anti-collision device according to claim 5, characterized in that: The outer surface of the positioning plate (21) is provided with U-shaped clamps (22) on the left and right sides of the front end. The outer surface of the U-shaped clamps (22) and the positioning plate (21) is installed by hydraulic bolts (23). The U-shaped clamps (22) are fixedly installed with shock-absorbing rubber pads (28). The bottom of the outer surface of the base (1) is fixedly installed with a fixing column (2).

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