Anti-collision device for port crane

Abstract

The utility model relates to the field of cranes, and discloses an anti-collision device for a port crane, which comprises a mounting top plate arranged above a hook of the crane and two supporting components arranged on the left side and the right side above the mounting top plate, and contact seats are mounted at the top ends of the two supporting components through screws. The wireless controller is arranged in a mounting cavity in the contact seat, an opening is formed in the surface of the lower end of the contact seat to form a contact hole, the contact ball is arranged under the contact hole, the contact seat is arranged above a crane hook in a suspended mode through the supporting assembly, the wireless controller is arranged in the contact seat, and the contact ball is arranged under the contact seat. The crane hook can be replaced and maintained when falling to the bottommost end, convenience is improved, when the distance between the crane hook and the top of a crane is reduced and collision is about to happen, a traction device of the crane can stop running, and collision between the crane and the crane hook is avoided.

Description

Technical Field

[0001] The utility model relates to the field of cranes, in particular to an anti-collision device for port cranes. Background Art

[0002] A crane is needed to lift and transport goods at the dock. In the actual working process, due to staff errors or control system failures, the sling may not stop in time during the rising process, and the sling will collide with the top and cause damage to the equipment. In the Chinese utility model patent with announcement number CN209685174U, a collision protection device for crane lifting is disclosed, which uses the rising sling that has not stopped in time to lift the limit plate and the pressure plate, and the pressure on the pressure sensor at the bottom of the pressure plate disappears, thereby sending a signal to the microprocessor to automatically close the traction mechanism to prevent the sling from hitting the top and causing damage to the equipment, and uses the elasticity of the connecting spring to buffer the rise of the sling to avoid the sling colliding with the top during the process of closing the traction mechanism, thereby improving the collision protection effect of the crane lifting.

[0003] Regarding the above-mentioned related technologies, the inventor believes that there are the following defects: in the above-mentioned structure, the limit plate, pressure plate, pressure sensor and other devices are all set on the top of the lifting structure of the sling, and the height of the lifting structure of the crane is dozens of meters away from the ground. For some cranes, their big arms can be raised and lowered, so those parts can be quickly replaced and maintained. However, for some cranes such as trolleys whose lifting structures cannot be raised and lowered, when these parts are damaged and need to be replaced, they need to climb up to replace and maintain them. The whole operation is more complicated and less safe. For this reason, we designed an anti-collision device for port cranes. Utility Model Content

[0004] In order to solve the technical problem of facilitating replacement and maintenance of an anti-collision structure, the utility model provides an anti-collision device for a port crane.

[0005] The utility model is implemented by the following technical scheme: an anti-collision device for a port crane, comprising a mounting top plate arranged above a crane hook, and two support assemblies arranged on the left and right sides above the mounting top plate, the top screws of the two support assemblies are installed with contact seats, a wireless controller is arranged in an installation cavity inside the contact seat, and a contact hole is formed in an opening design on the lower end surface of the contact seat, and the contact hole is placed just below the emergency stop switch on the wireless controller;

[0006] The contact ball is placed just below the contact hole, and the contact ball is fixed to the upper end surface of the mounting top plate through a vertical column.

[0007] As a further improvement of the above solution, the wireless controller is suspended in the mounting cavity of the contact seat through a bracket, and there is a 1CM gap between the wireless controller and the bottom end of the contact seat. When the contact ball presses the emergency stop switch of the wireless controller, it will not be pressed immediately. There will be a certain time gap between them, which provides time for the rubber pad to buffer and ensures the safety of the wireless controller.

[0008] A mounting cover is mounted on the opening above the contact seat by means of screws, which facilitates the installation and removal of the mounting cover, and further facilitates the replacement and maintenance of internal components.

[0009] As a further improvement of the above solution, a rubber pad is installed at the bottom of the contact seat through a pressure ring and a screw, and the rubber pad is located directly above the contact hole. The rubber pad can seal the contact hole and can buffer the contact ball to a certain extent, thereby reducing the impact force on the wireless controller and ensuring the service life of the wireless controller.

[0010] The inner diameter of the contact hole is not less than the outer diameter of the contact ball. The contact ball can press the wireless controller through the contact hole, thereby stopping the crane hook of the crane from moving upward. There is a distance of 3-5CM between the contact ball and the bottom of the contact seat. The contact seat will first contact the top of the crane, and move it downward for a certain distance before contacting the contact ball. The support component has a buffering effect on it, reducing the impact force on the wireless controller.

[0011] As a further improvement of the above scheme, the support assembly includes a support rod, a mounting sleeve and an abutment spring, the abutment spring is sleeved inside the mounting sleeve, the support rod is slidably sleeved in the mounting sleeve, and the sliding abutment block at the bottom end of the support rod contacts the upper end of the abutment spring. When the crane hook rises too far, the contact seat will first contact the top of the crane and cause the contact seat to move downward, and the abutment spring allows the crane hook to rise for buffering, thereby reducing the impact force between the contact ball and the wireless controller.

[0012] As a further improvement of the above solution, a mounting cap is threadedly connected above the outer ring surface of the mounting sleeve, and a sliding hole is formed through the middle position of the upper and lower ends of the mounting cap, and the support rod is slidably and sealed in the sliding hole, which is convenient for replacement and maintenance of the internal abutment spring and the support rod;

[0013] The outer diameter of the sliding block is larger than the inner diameter of the sliding hole, and can limit the support rod so that the support rod cannot be separated from the mounting sleeve.

[0014] As a further improvement of the above scheme, a plurality of evenly distributed rope threading holes are provided on the mounting top plate, and the upper and lower edges of the rope threading holes are chamfered to form arc-shaped surfaces. The rope on the crane hook can pass through the rope threading holes for normal lifting and lowering, and the wear between the rope and the mounting top plate is reduced.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The utility model sets the contact seat above the crane hook in the air through the support assembly, and the wireless controller is set in the contact seat, and the contact ball is set below the contact seat, so that they can be lifted and lowered together with the crane hook. When the crane hook falls to the bottom, it can be replaced and maintained, which improves convenience. When the distance between the crane hook and the top of the crane is reduced and a collision is about to occur, it can stop the traction device of the crane and avoid collision between the crane and the crane hook.

[0017] 2. By arranging abutment springs inside the support assembly and cooperating with rubber pads, the rise of the crane hook can be buffered, thereby reducing the impact force between the contact ball and the wireless controller and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of an anti-collision device for a port crane provided by the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the internal structure of the support assembly;

[0020] Figure 3 for Figure 1 Schematic diagram of the partial section;

[0021] Figure 4 for Figure 3 Schematic diagram of the structure enlarged at point A in the middle.

[0022] Description of main symbols:

[0023] 1. Crane hook; 2. Mounting top plate; 21. Rope threading hole; 3. Support assembly; 31. Support rod; 311. Sliding block; 32. Mounting sleeve; 321. Mounting cap; 33. Abutment spring; 4. Vertical column; 41. Contact ball; 5. Contact seat; 51. Mounting cover; 52. Contact hole; 53. Rubber pad; 54. Pressure ring; 6. Wireless controller. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0025] Example:

[0026] Please combine Figure 1-Figure 4 , an anti-collision device for a port crane in this embodiment comprises a mounting top plate 2 arranged above a crane hook 1, and two support assemblies 3 arranged on the left and right sides above the mounting top plate 2, the top screws of the two support assemblies 3 are installed with a contact seat 5, a wireless controller 6 is arranged in a mounting cavity inside the contact seat 5, and a contact hole 52 is formed in an opening design on the lower end surface of the contact seat 5, and the contact hole 52 is placed just below the emergency stop switch on the wireless controller 6;

[0027] The contact ball 41 is placed directly below the contact hole 52 , and the contact ball 41 is fixed to the upper end surface of the mounting top plate 2 through the vertical column 4 .

[0028] The wireless controller 6 is suspended in the mounting cavity of the contact seat 5 by a bracket, and there is a 1CM gap between the wireless controller 6 and the bottom of the contact seat 5. When the emergency stop switch of the wireless controller 6 is pressed, the contact ball 41 will not be pressed immediately. There will be a certain time gap between them, which provides time for the rubber pad 53 to buffer and ensures the safety of the wireless controller 6.

[0029] An installation cover 51 is installed at the opening above the contact seat 5 by means of screws, which facilitates the installation and removal of the installation cover 51 and further facilitates the replacement and maintenance of internal components.

[0030] A rubber pad 53 is installed at the bottom of the contact seat 5 through a pressure ring 54 and screws, and the rubber pad 53 is located directly above the contact hole 52. The rubber pad 53 can seal the contact hole 52 and can buffer the contact ball 41 to a certain extent, thereby reducing the impact force on the wireless controller 6 and ensuring the service life of the wireless controller 6.

[0031] The inner diameter of the contact hole 52 is not less than the outer diameter of the contact ball 41. The contact ball 41 can press the wireless controller 6 through the contact hole 52, thereby stopping the crane hook 1 of the crane from moving upward. There is a 3-5CM distance between the contact ball 41 and the bottom of the contact seat 5. The contact seat 5 will first contact the top of the crane, and move it downward for a certain distance before contacting the contact ball 41. The support component 3 has a buffering effect on it, reducing the impact force on the wireless controller 6.

[0032] The support assembly 3 includes a support rod 31, a mounting sleeve 32 and an abutment spring 33. The abutment spring 33 is sleeved inside the mounting sleeve 32. The support rod 31 is slidably sleeved in the mounting sleeve 32, and the sliding abutment block 311 at the bottom end of the support rod 31 contacts the upper end of the abutment spring 33. When the crane hook 1 rises too far, the contact seat 5 will first contact the top of the crane and cause the contact seat 5 to move downward. The abutment spring 33 is set to buffer the rise of the crane hook 1, thereby reducing the impact force between the contact ball 41 and the wireless controller 6.

[0033] The outer surface of the mounting sleeve 32 is threadedly connected with a mounting cap 321, and a sliding hole is formed through the middle position of the upper and lower ends of the mounting cap 321, and the support rod 31 is slidably and sealed in the sliding hole, which is convenient for the replacement and maintenance of the internal abutment spring 33 and the support rod 31;

[0034] The outer diameter of the sliding stopper 311 is larger than the inner diameter of the sliding hole, and can limit the support rod 31 so that the support rod 31 cannot be separated from the mounting sleeve 32 .

[0035] A plurality of evenly distributed rope threading holes 21 are provided on the mounting top plate 2, and the upper and lower edges of the rope threading holes 21 are chamfered to form arc-shaped surfaces. The rope on the crane hook 1 can pass through the rope threading holes 21 for normal lifting and lowering, and the wear between the rope threading holes and the mounting top plate 2 is reduced.

[0036] The implementation principle of an anti-collision device for a port crane in the embodiment of the present application is as follows: in actual use, a mounting top plate 2 is welded to the top of the crane hook 1, and the contact seat 5 is suspended and installed above the mounting top plate 2 through the support assembly 3. The traction device on the crane makes the crane hook 1 rise through the rope. When an unexpected situation occurs and causes the crane hook 1 to be about to rise to the top and continue to rise, the contact seat 5 set will first contact with the top of the crane and generate a certain extrusion force. Since the contact seat 5 is installed on the upper end of the support assembly 3, and the abutment spring 33 in the support assembly 3 is in contact with the support rod 31, the abutment spring 33 will be squeezed and gradually compressed, and the distance between the contact seat 5 and the crane hook 1 is reduced, and the distance between the contact ball 41 and the contact hole 52 is reduced, until the contact ball 41 is placed in the contact hole 52 and pushes the rubber pad 53 to move upward to contact the wireless controller 6, and contact the emergency stop switch issued by it, so that the traction device stops running and the crane hook 1 stops rising;

[0037] The contact seat 5 is suspended above the crane hook 1 through the support assembly 3, and the wireless controller 6 is arranged in the contact seat 5, and the contact ball 41 is arranged below the contact seat 5, so that they can be lifted and lowered together with the crane hook 1. When the crane hook 1 falls to the bottom, it can be replaced and maintained, which improves convenience. When the distance between the crane hook 1 and the top of the crane is reduced and a collision is about to occur, it can stop the traction device of the crane from running, avoiding the collision between the crane and the crane hook 1.

[0038] By arranging the abutment spring 33 inside the support assembly 3 and cooperating with the rubber pad 53, the rising of the crane hook 1 can be buffered, thereby reducing the impact force between the contact ball 41 and the wireless controller 6 and extending its service life.

[0039] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An anti-collision device for a port crane, characterized in that: The invention comprises a mounting top plate (2) arranged above a crane hook (1), and two support assemblies (3) arranged on the left and right sides above the mounting top plate (2), the top ends of the two support assemblies (3) being screwed with contact seats (5), a wireless controller (6) being arranged in a mounting cavity inside the contact seat (5), and a contact hole (52) being formed in an opening design on the lower end surface of the contact seat (5), and the contact hole (52) being arranged directly below an emergency stop switch on the wireless controller (6); The contact ball (41) is placed directly below the contact hole (52), and the contact ball (41) is fixed to the upper end surface of the mounting top plate (2) via a vertical column (4).

2. The anti-collision device for a port crane according to claim 1, characterized in that: The wireless controller (6) is suspended in the mounting cavity of the contact seat (5) by means of a bracket, and a distance of 1 cm is provided between the wireless controller (6) and the bottom end of the contact seat (5); A mounting cover (51) is mounted on the upper opening of the contact seat (5) by means of screws.

3. The anti-collision device for a port crane according to claim 2, characterized in that: A rubber pad (53) is installed at the bottom of the contact seat (5) via a pressure ring (54) and screws, and the rubber pad (53) is located directly above the contact hole (52); The inner diameter of the contact hole (52) is not less than the outer diameter of the contact ball (41), and there is a distance of 3-5 cm between the contact ball (41) and the bottom end of the contact seat (5).

4. The anti-collision device for a port crane according to claim 1, characterized in that: The support assembly (3) comprises a support rod (31), a mounting sleeve (32) and an abutment spring (33); the abutment spring (33) is sleeved inside the mounting sleeve (32); the support rod (31) is slidably sleeved inside the mounting sleeve (32); and a sliding abutment block (311) at the bottom end of the support rod (31) contacts the upper end of the abutment spring (33).

5. The anti-collision device for a port crane according to claim 4, characterized in that: A mounting cap (321) is threadedly connected above the outer ring surface of the mounting sleeve (32), and a sliding hole is formed through the middle position of the upper and lower ends of the mounting cap (321), and the support rod (31) is slidably and sealed in the sliding hole; The outer diameter of the sliding block (311) is greater than the inner diameter of the sliding hole.

6. The anti-collision device for a port crane according to claim 1, characterized in that: The mounting top plate (2) is provided with a plurality of evenly distributed rope threading holes (21), and the upper and lower edges of the rope threading holes (21) are both rounded to form arc-shaped surfaces.

Images