Rail steering device of beam lifter

Abstract

The utility model discloses a track steering device of a beam lifter, and relates to the technical field of beam lifters, in particular to the track steering device of the beam lifter, which comprises a beam arm and a beam plate, electric sliding blocks are arranged at two ends of a transverse plate, the electric sliding blocks are connected onto the outer surface of the beam arm in a sliding manner, and a protective box is arranged on the upper surface of the beam plate. A connecting through hole is formed in the protection box, a connecting shaft rod is rotationally connected into the connecting through hole, a transmission gear is arranged at the upper end of the connecting shaft rod, a servo motor is arranged in the protection box, a rotating shaft is arranged at one end of an output shaft of the servo motor, an output gear is arranged on the outer surface of the rotating shaft, and the output gear is meshed with the transmission gear. According to the track steering device of the beam lifter, through cooperative arrangement of the servo motor, the output gear, the link shaft rod, the transmission gear and the overrun box, the track steering device of the beam lifter has the effect of facilitating rapid steering of the beam lifter.

Description

Technical Field

[0001] This utility model relates to the field of beam lifting machine technology, specifically a beam lifting machine track steering device. Background Technology

[0002] A gantry crane is a type of portal crane specifically designed for bridge construction. It mainly consists of a prefabricated main beam, legs, and a trolley, with components connected by pins and high-strength bolts, facilitating easy assembly, disassembly, and transportation. Compared to ordinary gantry cranes, it is easier, faster, more economical, and practical to install. It is suitable for road and bridge construction companies that frequently relocate.

[0003] Existing rail-mounted beam lifting machines can only move bridge components horizontally in all directions. When a right-angle rotation of a bridge component is required, the base of the lifting machine is driven to rotate. This method makes it inconvenient to lift another bridge after the base has rotated, as the base needs to be moved back to its initial position to lift the bridge. This reduces the normal operating efficiency of the lifting machine. In addition, the existing steering device of the lifting machine does not provide timely over-limit alarms during beam lifting operations, posing certain safety hazards. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a track steering device for a beam lifting machine, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a beam lifting machine track steering device, comprising a beam arm and a beam plate. Electric sliders are provided at both ends of the beam plate, slidably connected to the outer surface of the beam arm. A protective box is provided on the upper surface of the beam plate. A connecting through hole is provided inside the protective box, and a connecting shaft is rotatably connected inside the connecting through hole. A transmission gear is provided at the upper end of the connecting shaft. A servo motor is provided inside the protective box, and a rotating shaft is provided at one end of the output shaft of the servo motor. An output gear is provided on the outer surface of the rotating shaft, meshing with the transmission gear. An over-limit box is provided at the lower end of the connecting shaft, and a support shaft is provided inside the over-limit box. A rotating plate is rotatably connected to the outer surface of the support shaft. A T-shaped sliding plate is slidably connected inside the over-limit box, and a connecting plate is provided at the lower end of the T-shaped sliding plate. A connecting seat is provided on the lower surface of the connecting plate, and a winch body is provided inside the connecting seat. A limit plate is provided inside the over-limit box, and a counterweight is slidably connected inside the limit plate.

[0008] Optionally, the beam plate has an installation through hole inside, and a limit bearing is installed inside the installation through hole, with the connecting shaft installed inside the limit bearing.

[0009] Optionally, the size of the transmission gear is much larger than the size of the output gear.

[0010] Optionally, the distance between the support shaft and the T-shaped slide is much smaller than the distance between the support shaft and the counterweight, and a buzzer is installed inside the over-limit box.

[0011] Optionally, the over-limit box is equipped with a fixing plate inside, and a pressure sensor is provided on the lower surface of the fixing plate. The pressure sensor is adapted to the position of the counterweight.

[0012] Optionally, the lower surface of the over-limit box is provided with a guide slide rod, and a connecting ring is slidably connected to the outer surface of the guide slide rod. The connecting ring is disposed on the outer surface of the connecting plate, and a first spring is disposed on the outer surface of the connecting ring. A limit piece is disposed at one end of the first spring, and the limit piece is disposed at one end of the guide slide rod.

[0013] This utility model provides a track steering device for a beam lifting machine, which has the following advantages:

[0014] 1. The track steering device of this beam lifting machine, through the coordinated arrangement of servo motor, output gear, connecting shaft, transmission gear and over-limit box, enables the beam lifting machine to perform rapid steering.

[0015] 2. The track steering device of the beam lifting machine, through the coordinated arrangement of the over-limit box, support shaft, rotating plate, T-shaped sliding plate and counterweight, enables the track steering device of the beam lifting machine to have the effect of convenient and timely over-limit warning. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the protective box of this utility model;

[0018] Figure 3 This is a front view of the internal structure of the over-limit box of this utility model;

[0019] Figure 4 This is a top view of the internal structure of the over-limit container of this utility model;

[0020] Figure 5 This is a front view structural diagram of the present invention.

[0021] In the diagram: 1. Beam arm; 2. Beam plate; 3. Electric slider; 4. Protective box; 5. Connecting shaft; 6. Transmission gear; 7. Servo motor; 8. Output gear; 9. Over-limit box; 10. Support shaft; 11. Rotating plate; 12. T-shaped sliding plate; 13. Connecting plate; 14. Winch body; 15. Counterweight; 16. Limit bearing; 17. Buzzer; 18. Pressure sensor; 19. Connecting ring; 20. First spring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example

[0024] Please see Figures 1 to 5 This utility model provides a technical solution: a beam lifting machine track steering device, including a beam arm 1 and a beam plate 2. Electric sliders 3 are provided at both ends of the beam plate 2, and the electric sliders 3 are slidably connected to the outer surface of the beam arm 1. A protective box 4 is provided on the upper surface of the beam plate 2. A connecting through hole is provided inside the protective box 4, and a connecting shaft 5 is rotatably connected inside the connecting through hole. A transmission gear 6 is provided at the upper end of the connecting shaft 5. A servo motor 7 is provided inside the protective box 4, and a rotating shaft is provided at one end of the output shaft of the servo motor 7. The outer surface of the rotating shaft is... An output gear 8 is provided, which meshes with a transmission gear 6. An over-limit box 9 is provided at the lower end of the connecting shaft 5. A support shaft 10 is provided inside the over-limit box 9. A rotating plate 11 is rotatably connected to the outer surface of the support shaft 10. A T-shaped slide plate 12 is slidably connected inside the over-limit box 9. A connecting plate 13 is provided at the lower end of the T-shaped slide plate 12. A connecting seat is provided on the lower surface of the connecting plate 13. A winch body 14 is provided inside the connecting seat. A limit plate is provided inside the over-limit box 9. A counterweight block 15 is slidably connected inside the limit plate.

[0025] Specifically, after the corresponding bridge component is lifted by the hook assembly of the winch body 14, when the weight of the bridge component is too large, the bridge component pulls the connecting plate 13 and the T-shaped slide plate 12, causing the T-shaped slide plate 12 to slide down and squeeze the rotating plate 11, causing the other side of the rotating plate 11 to push the counterweight 15 upward. At the same time, the connecting plate 13 squeezes the first spring 20. When the counterweight 15 squeezes the pressure sensor 18, it sends a pressure signal and triggers the buzzer 17 to sound an alarm, realizing an over-limit warning. When the weight of the bridge component is normal, the winch body 14 on the beam lifting machine performs normal lifting. When rotation is required, the rotation of the servo motor 7 (the protective box 4 has a wire connection port and heat dissipation port for the servo motor 7, shown in the figure) drives the output gear 8 to rotate. Under the action of the transmission gear 6, the connecting shaft 5 and the over-limit box 9 are driven to rotate, completing the turning of the bridge component (the electric slider 3 contains a drive assembly and a brake assembly, not shown in the figure).

[0026] Please refer to 5. The beam plate 2 has an installation through hole inside, and a limit bearing 16 is installed inside the installation through hole. The connecting shaft 5 is installed inside the limit bearing 16.

[0027] Specifically, the setting of the limit bearing 16 ensures the stability of the rotation of the connecting shaft 5.

[0028] Please refer to 2. The size of the transmission gear 6 is much larger than the size of the output gear 8.

[0029] Specifically, the small gear (output gear 8) has a large contact area when meshing with the large gear (transmission gear 6), which can effectively carry the transmission of large torque and avoid slippage and other problems.

[0030] Please refer to 3-4. The distance between the support shaft 10 and the T-shaped slide plate 12 is much smaller than the distance between the support shaft 10 and the counterweight 15. A buzzer 17 is installed inside the over-limit box 9.

[0031] Specifically, the small torque between the support shaft 10 and the T-shaped slide plate 12, combined with the large torque between the support shaft 10 and the counterweight 15, can effectively increase the load-bearing capacity of the over-limit structure.

[0032] Please refer to 3. The interior of the over-limit box 9 is provided with a fixing plate, and the lower surface of the fixing plate is provided with a pressure sensor 18, which is adapted to the position of the counterweight 15.

[0033] Specifically, the pressure sensor 18 is configured to detect and transmit information about the upward sliding of the counterweight 15 in a timely manner.

[0034] Please see Figure 1-5The lower surface of the over-limit box 9 is provided with a guide slide rod, and a connecting ring 19 is slidably connected to the outer surface of the guide slide rod. The connecting ring 19 is disposed on the outer surface of the connecting plate 13. A first spring 20 is disposed on the outer surface of the connecting ring 19. A limit piece is disposed at one end of the first spring 20, and the limit piece is disposed at one end of the guide slide rod.

[0035] Specifically, the guide slide effectively ensures the sliding trajectory of the connecting plate 13, and in conjunction with the elasticity of the first spring 20, it shares the pressure on the rotating plate 11 to a certain extent.

[0036] During use, after the corresponding bridge component is lifted by the hook assembly of the winch body 14, when the weight of the bridge component is too large, the bridge component pulls the connecting plate 13 and the T-shaped slide plate 12, causing the T-shaped slide plate 12 to slide down and press the rotating plate 11, causing the rotating plate 11 to rotate (the small torque between the support shaft 10 and the T-shaped slide plate 12, combined with the large torque between the support shaft 10 and the counterweight 15, can effectively increase the load-bearing capacity of the oversized structure), thereby causing the other side of the rotating plate 11 to push the counterweight 15 upward. At the same time, the connecting plate 13 presses the first spring 20. When the counterweight 15 presses against the pressure sensor 18, a pressure signal is emitted, triggering the buzzer 17. The system provides alarm and over-limit warning. When the weight of the bridge component is normal, the hoist body 14 of the lifting machine performs normal lifting. When rotation is required, the servo motor 7 drives the output gear 8 to rotate. Under the action of the transmission gear 6 (the small gear (output gear 8) and the large gear (transmission gear 6) have a large contact area when meshing, which can effectively bear the transmission of large torque and avoid slippage and other problems), the connecting shaft 5 and the over-limit box 9 are driven to rotate, completing the turning of the bridge component. This enables the lifting machine track turning device to facilitate rapid turning of the lifting machine and to provide timely over-limit warning.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A track steering device for a beam lifting machine, comprising a beam arm and a beam plate, characterized in that: Electric sliders are installed at both ends of the beam plate, and the electric sliders are slidably connected to the outer surface of the beam arm. A protective box is installed on the upper surface of the beam plate. A connecting through hole is opened inside the protective box, and a connecting shaft is rotatably connected inside the connecting through hole. A transmission gear is installed at the upper end of the connecting shaft. A servo motor is installed inside the protective box. A rotating shaft is installed at one end of the output shaft of the servo motor. An output gear is installed on the outer surface of the rotating shaft. The output gear meshes with the transmission gear. An over-limit box is installed at the lower end of the connecting shaft. A support shaft is installed inside the over-limit box. A rotating plate is rotatably connected to the outer surface of the support shaft. A T-shaped sliding plate is slidably connected inside the over-limit box. A connecting plate is installed at the lower end of the T-shaped sliding plate. A connecting seat is installed on the lower surface of the connecting plate. A winch body is installed inside the connecting seat. A limit plate is installed inside the over-limit box. A counterweight is slidably connected inside the limit plate.

2. The beam lifting machine track steering device according to claim 1, characterized in that: The beam plate has an installation through hole inside, and a limit bearing is installed inside the installation through hole. The connecting shaft is installed inside the limit bearing.

3. The beam lifting machine track steering device according to claim 1, characterized in that: The size of the transmission gear is much larger than the size of the output gear.

4. The beam lifting machine track steering device according to claim 1, characterized in that: The distance between the support shaft and the T-shaped slide is much smaller than the distance between the support shaft and the counterweight. A buzzer is installed inside the over-limit box.

5. A beam lifting machine track steering device according to claim 1, characterized in that: The over-limit box has a fixed plate inside, and a pressure sensor is installed on the lower surface of the fixed plate. The pressure sensor is matched with the position of the counterweight.

6. A beam lifting machine track steering device according to claim 1, characterized in that: The lower surface of the over-limit box is provided with a guide slide rod, and a connecting ring is slidably connected to the outer surface of the guide slide rod. The connecting ring is set on the outer surface of the connecting plate, and a first spring is set on the outer surface of the connecting ring. A limit piece is set at one end of the first spring, and the limit piece is set at one end of the guide slide rod.

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