Bridge crane

Abstract

The utility model discloses a bridge crane. The bridge crane comprises a bridge frame and an angle detection unit, the lower end of the bridge is slidably connected with a moving trolley, and a winch is arranged in the middle of the moving trolley; the angle detection unit comprises a supporting shaft, a rope sleeve and a tilt angle sensor, the supporting shaft is movably connected to the lower surface of the moving trolley, the rope sleeve is arranged at the lower end of the supporting shaft, a steel wire rope of the winch penetrates through the front end of the rope sleeve, and the tilt angle sensor is arranged on the lower surface of the rope sleeve; the bridge crane further comprises a controller, the controller is arranged on the front side face of the bridge frame, the input end of the winch is electrically connected with the output end of the controller, and the output end of the tilt angle sensor is electrically connected with the input end of the controller. The controller can limit the work of the winch, so that the bridge crane can be prevented from illegally and obliquely pulling and hoisting, and the safety of the bridge crane during use is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge cranes, and specifically relates to a bridge crane. Background Art

[0002] A bridge crane is a lifting device widely used in industrial and commercial fields. With the progress of society, its uses have been continuously expanded and deepened. A bridge crane is mainly used for lifting heavy objects and can perform lifting operations of large objects in various places such as factories, warehouses, and docks. A bridge crane generally consists of a bridge, a moving trolley, a winch, etc., which greatly saves labor costs and time. At the same time, through its unique structural design, it can cover a large working area. Generally, it cannot detect the angle of the steel wire rope by itself. During use, the operator can perform oblique pulling and illegal lifting, which will affect the safety of the bridge crane during use. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a bridge crane with an angle detection unit that can detect the inclination of the steel wire rope of the bridge crane. When the steel wire rope is inclined, the controller will limit the operation of the winch, thereby preventing illegal oblique pulling and lifting of the bridge crane and greatly improving the safety of the bridge crane during use. It can effectively solve the problems in the background art.

[0004] To achieve the above object, the utility model provides the following technical solution: A bridge crane includes a bridge and an angle detection unit;

[0005] Bridge: A moving trolley is slidably connected to its lower end, and a winch is provided in the middle of the moving trolley;

[0006] Angle detection unit: It includes a support shaft, a rope sleeve, and an inclination sensor. The support shaft is movably connected to the lower surface of the moving trolley. A rope sleeve is provided at the lower end of the support shaft. The steel wire rope of the winch passes through the front end of the rope sleeve, and an inclination sensor is provided on the lower surface of the rope sleeve;

[0007] Among them: It further includes a controller. The controller is arranged on the front side of the bridge. The input end of the winch is electrically connected to the output end of the controller, the output end of the inclination sensor is electrically connected to the input end of the controller, and the input end of the controller is electrically connected to an external power supply. An angle detection unit is provided, which can detect the inclination of the steel wire rope of the bridge crane. When the steel wire rope is inclined, the controller will limit the operation of the winch, thereby preventing illegal oblique pulling and lifting of the bridge crane and greatly improving the safety of the bridge crane during use.

[0008] Further, the angle detection unit further includes a ball head seat and a ball head. The ball head seat is disposed on the lower surface of the mobile trolley. A ball head is rotatably connected inside the ball head seat. The outer arc surface of the ball head is fixedly connected to the upper end of the support shaft, providing rotational support for the support shaft.

[0009] Further, a spring is movably sleeved on the upper end of the outer arc surface of the support shaft, and a support ring is provided at the lower end of the outer arc surface of the support shaft. The spring is located between the support ring and the ball head seat to assist in aligning the support shaft.

[0010] Further, symmetrically distributed arc-shaped pieces are installed inside the round hole at the front end of the rope sleeve, and the steel wire rope passes through the ring formed by the two arc-shaped pieces to reduce the wear of the rope sleeve.

[0011] Further, a warning light and an alarm are provided at the rear side of the lower surface of the mobile trolley. The warning light is located in front of the alarm. The input ends of the warning light and the alarm are both electrically connected to the output end of the controller for warning.

[0012] Further, a limit switch is provided on the lower surface of the rope sleeve. The limit switch is cooperatively arranged with the hook of the hoist. The output end of the limit switch is electrically connected to the input end of the controller to prevent the hook from impacting the rope sleeve.

[0013] Further, symmetrically distributed racks are provided on the lower surface of the mobile trolley. A transmission shaft is rotatably connected to the middle of the mobile trolley. Gears are provided at both the front and rear ends of the outer arc surface of the transmission shaft. Both gears are meshed with the vertically corresponding racks. A motor is provided on the front side of the mobile trolley. The output shaft of the motor is fixedly connected to the front end of the transmission shaft. The input end of the motor is electrically connected to the output end of the controller to facilitate controlling the movement of the mobile trolley.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: This bridge crane has the following advantages:

[0015] An angle detection unit is provided to detect the inclination of the steel wire rope of the bridge crane. When the steel wire rope is inclined, the controller will limit the operation of the hoist, thereby preventing the bridge crane from illegally slanting and lifting, greatly improving the safety of the bridge crane during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is an enlarged structural diagram of part A of the present utility model;

[0018] Figure 3 is a sectional structural diagram of the mobile trolley of the present utility model;

[0019] Figure 4This is a schematic enlarged view of the structure at position B of the present utility model.

[0020] In the figure: 1 bridge frame, 2 moving trolley, 3 hoist, 4 controller, 5 angle detection unit, 51 ball head seat, 52 ball head, 53 support shaft, 54 rope sleeve, 55 inclination sensor, 6 arc-shaped piece, 7 limit switch, 8 spring, 9 support ring, 10 warning light, 11 alarm, 12 transmission shaft, 13 gear, 14 motor, 15 rack. Specific implementation manner

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-4 , this embodiment provides a technical solution: a bridge crane, including a bridge frame 1 and an angle detection unit 5;

[0023] Bridge frame 1: A moving trolley 2 is slidably connected to its lower end. The sliding connection manner between the moving trolley 2 and the bridge frame 1 is a common manner in the existing track trolley technology. The bridge frame 1 moves along the external track. A hoist 3 is provided in the middle of the moving trolley 2. The hoist 3 controls the winding and unwinding of the steel wire rope to move the hook up and down. Symmetrically distributed racks 15 are provided on the lower surface of the moving trolley 2. A transmission shaft 12 is rotatably connected to the middle of the moving trolley 2. Gears 13 are provided at the front and rear ends of the outer arc surface of the transmission shaft 12. Both gears 13 are meshed with the vertically corresponding racks 15. A motor 14 is provided on the front side of the moving trolley 2. The output shaft of the motor 14 is fixedly connected to the front end of the transmission shaft 12. The input end of the motor 14 is electrically connected to the output end of the controller 4. When the motor 14 operates, the output shaft of the motor 14 drives the transmission shaft 12 to rotate. The transmission shaft 12 drives the two gears 13 to rotate. The gears 13 are meshed with the fixed racks 15. Thus, the gears 13 will drive the moving trolley 2 to move along the bridge frame 1 through the transmission shaft 12;

[0024] Angle detection unit 5: It includes a support shaft 53, a rope sleeve 54, and an inclination sensor 55. The support shaft 53 is movably connected to the lower surface of the mobile trolley 2. A rope sleeve 54 is provided at the lower end of the support shaft 53. The steel wire rope of the winch 3 passes through the front end of the rope sleeve 54. An inclination sensor 55 is provided on the lower surface of the rope sleeve 54. When the steel wire rope is inclined, the steel wire rope drives the support shaft 53 to incline synchronously through the rope sleeve 54, and the rope sleeve 54 drives the inclination sensor 55 to incline. The angle detection unit 5 further includes a ball head seat 51 and a ball head 52. The ball head seat 51 is provided on the lower surface of the mobile trolley 2. A ball head 52 is rotatably connected inside the ball head seat 51. The outer arc surface of the ball head 52 is fixedly connected to the upper end of the support shaft 53. When the ball head 52 and the ball head seat 51 are relatively displaced, a spring 8 is movably sleeved on the upper end of the outer arc surface of the support shaft 53. A support ring 9 is provided at the lower end of the outer arc surface of the support shaft 53. The spring 8 is located between the support ring 9 and the ball head seat 51. The support ring 9 and the ball head seat 51 are fixedly connected to both ends of the spring 8. The spring 8 restricts the rotation of the support shaft 53. The support shaft 53 drives the support ring 9 to swing synchronously and squeeze the spring 8, and the spring 8 undergoes elastic deformation. The spring 8 can assist in straightening the support shaft 53 through the support ring 9. Symmetrically distributed arc-shaped pieces 6 are installed inside the circular hole at the front end of the rope sleeve 54. The steel wire rope passes through the ring formed by the two arc-shaped pieces 6. The arc-shaped pieces 6 are replaceable brass arc-shaped pieces, which can reduce the wear of the rope sleeve 54. A warning light 10 and an alarm 11 are provided at the rear side of the lower surface of the mobile trolley 2. The warning light 10 is located in front of the alarm 11. The input ends of the warning light 10 and the alarm 11 are electrically connected to the output end of the controller 4. A limit switch 7 is provided on the lower surface of the rope sleeve 54. The limit switch 7 is arranged in cooperation with the hook of the winch 3. The output end of the limit switch 7 is electrically connected to the input end of the controller 4. The limit switch 7 detects the position of the hook to facilitate the winch 3 to stop in time;

[0025] Among them: It further includes a controller 4. The controller 4 is arranged on the front side of the bridge 1. The input end of the winch 3 is electrically connected to the output end of the controller 4. The output end of the inclination sensor 55 is electrically connected to the input end of the controller 4. The input of the controller 4 is electrically connected to an external power supply. The inclination sensor 55 can detect the inclination of the steel wire rope. The inclination sensor 55 converts the inclination information into an electrical signal and transmits it to the controller 4. When the inclination of the steel wire rope exceeds the set value, the controller 4 controls the winch 3 to stop working.

[0026] The working principle of a bridge crane provided by the present utility model is as follows: The end of the steel wire rope of the hoist 3 passes through the round hole at the front end of the rope socket 54 and is fixedly connected to the lower surface of the moving trolley 2. The lower end of the steel wire rope is U-shaped. The pulley at the upper end of the hook is slidably connected to the steel wire rope of the hoist 3. During use, the controller 4 is adjusted. The hoist 3 controls the retraction and release of the steel wire rope to control the up and down movement of the hook. When in the hoisting process, when the hook and the object are sometimes located below the moving trolley 2 and the steel wire rope is inclined, the steel wire rope drives the support shaft 53 to tilt synchronously through the arc-shaped piece 6 and the rope socket 54. The ball head 52 and the ball head seat 51 are relatively displaced. The support shaft 53 drives the support ring 9 to swing synchronously to squeeze the spring 8. The spring 8 undergoes elastic deformation. At the same time, the rope socket 54 drives the inclination sensor 55 to tilt. Furthermore, the inclination sensor 55 can detect the inclination of the steel wire rope. The inclination sensor 55 converts the inclination information into an electrical signal and transmits it to the controller 4. When the inclination of the steel wire rope exceeds the set value, the controller 4 controls the hoist 3 to stop working, thereby avoiding oblique hoisting. At the same time, the warning light 10 and the alarm 11 work synchronously to give sound and light warnings. At this time, the operator can adjust the controller 4, and the motor 14 operates. The output shaft of the motor 14 drives the transmission shaft 12 to rotate. The transmission shaft 12 drives the two gears 13 to rotate. The gears 13 are meshed and connected to the fixed rack 15. Furthermore, the gears 13 drive the moving trolley 2 to move along the bridge frame 1 through the transmission shaft 12, and the position of the moving trolley 2 can be adjusted to ensure vertical hoisting and carry out lifting. At the same time, the spring 8 can assist in straightening the support shaft 53 through the support ring 9, and the hoist 3 hoists the object.

[0027] It should be noted that the controller 4, inclination sensor 55, limit switch 7, hoist 3, warning light 10, alarm 11, and motor 14 disclosed in the above embodiments can all be freely configured according to the actual application scenario. The controller 4 can select a PLC controller with the model S7-1200. The inclination sensor 55 can select an inclination sensor with the model EM310-TI LT. The limit switch 7 can select a photoelectric switch with the model E3FA-DP15. The hoist 3 can select a hoist with the model JM5T. The warning light 10 can select a three-color warning light with the model M4-50S. The alarm 11 can select an alarm with the model BJ-60. The motor 14 can select a gear reduction motor with the model TCV28-750. The controller 4 controls the inclination sensor 55, limit switch 7, hoist 3, warning light 10, alarm 11, and motor 14 to work using the methods commonly used in the prior art.

[0028] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. A bridge crane, characterized in that: It includes a bridge frame (1) and an angle detection unit (5); Bridge frame (1): A moving trolley (2) is slidably connected to its lower end, and a winch (3) is provided in the middle of the moving trolley (2); Angle detection unit (5): It includes a support shaft (53), a rope sleeve (54) and an inclination sensor (55). The support shaft (53) is movably connected to the lower surface of the moving trolley (2). A rope sleeve (54) is provided at the lower end of the support shaft (53). The steel wire rope of the winch (3) passes through the front end of the rope sleeve (54), and an inclination sensor (55) is provided on the lower surface of the rope sleeve (54); Among them: It also includes a controller (4). The controller (4) is arranged on the front side of the bridge frame (1). The input end of the winch (3) is electrically connected to the output end of the controller (4), the output end of the inclination sensor (55) is electrically connected to the input end of the controller (4), and the input end of the controller (4) is electrically connected to an external power supply.

2. The overhead crane according to claim 1, wherein: The angle detection unit (5) also includes a ball head seat (51) and a ball head (52). The ball head seat (51) is arranged on the lower surface of the moving trolley (2), and a ball head (52) is rotatably connected inside the ball head seat (51). The outer arc surface of the ball head (52) is fixedly connected to the upper end of the support shaft (53).

3. The overhead crane according to claim 2, characterized in that: A spring (8) is movably sleeved on the upper end of the outer arc surface of the support shaft (53), and a support ring (9) is provided at the lower end of the outer arc surface of the support shaft (53). The spring (8) is located between the support ring (9) and the ball head seat (51).

4. A bridge crane according to claim 1, wherein: Symmetrically distributed arc-shaped pieces (6) are installed inside the circular hole at the front end of the rope sleeve (54), and the steel wire rope passes through the ring formed by the two arc-shaped pieces (6).

5. A bridge crane according to claim 1, characterized in that: A warning light (10) and an alarm (11) are provided at the rear side of the lower surface of the moving trolley (2). The warning light (10) is located in front of the alarm (11). The input ends of the warning light (10) and the alarm (11) are both electrically connected to the output end of the controller (4).

6. The overhead traveling crane according to claim 1, wherein: A limit switch (7) is provided on the lower surface of the rope sleeve (54). The limit switch (7) is arranged in cooperation with the hook of the winch (3). The output end of the limit switch (7) is electrically connected to the input end of the controller (4).

7. A bridge crane according to claim 1, characterized in that: Symmetrically distributed racks (15) are provided on the lower surface of the moving trolley (2). A transmission shaft (12) is rotatably connected to the middle of the moving trolley (2). Gears (13) are provided at both the front and rear ends of the outer arc surface of the transmission shaft (12). Both of the two gears (13) are meshed with the vertically corresponding racks (15). A motor (14) is provided on the front side of the moving trolley (2). The output shaft of the motor (14) is fixedly connected to the front end of the transmission shaft (12). The input end of the motor (14) is electrically connected to the output end of the controller (4).

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