A crane compensation mechanism

Abstract

The present application provides a kind of crane compensation mechanism, including setting on the crane boom hoist winch, servo winch and compensation device, the compensation device includes compensation cylinder and compensation trolley, trolley track is provided in the middle of boom, compensation cylinder is provided at one end of trolley track, the compensation trolley is arranged on trolley track and is slidably arranged along the length direction of trolley track, the piston rod of compensation cylinder is connected compensation trolley;Transfer pulley block is provided on the boom of compensation cylinder away from one end of trolley track, above-mentioned structure, by the setting of servo winch and hoist winch, the sway between ship and ship can be compensated, prevent the goods on crane and ship contact collision.

Description

Technical Field

[0001] This invention relates to the field of crane technology, and more specifically to a crane compensation mechanism. Background Technology

[0002] A ship's stability is a crucial indicator of a nation's maritime capabilities, enabling it to conduct marine exploration and transport dangerous goods. Because maritime operations differ significantly from land-based operations, ships are affected by irregular wave motion due to weather conditions, causing severe rolling and swaying of the hull. This poses a significant hazard to vessels transporting dangerous goods. Severe rolling can damage, leak, or even explode precision instruments and the transported dangerous goods, especially in adverse sea conditions, leading to substantial harm to crew and the environment.

[0003] When cargo needs to be transferred from one ship to another supply ship using a crane, the two ships will rise and fall differently due to the wind and waves at sea. This can easily cause the cargo to collide directly with the supply ship, resulting in damage to the cargo and potential injury to personnel. Summary of the Invention

[0004] This invention provides a crane compensation mechanism that can compensate for the swaying between ships and prevent the cargo on the crane from contacting or colliding with the ship.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: a crane compensation mechanism, comprising a lifting winch, a follow-up winch, and a compensation device mounted on the crane boom. The compensation device includes a compensation cylinder and a compensation trolley. A trolley track is provided in the middle of the boom, and a compensation cylinder is provided at one end of the trolley track. The compensation trolley is mounted on the trolley track and slides along the length of the trolley track. The piston rod of the compensation cylinder is connected to the compensation trolley. A transfer pulley block is provided on the boom at the end of the compensation cylinder away from the trolley track.

[0006] The compensation trolley includes a trolley frame, a lifting pulley block, and a follower pulley block. The lifting pulley block is located at one end of the trolley frame, and the follower pulley block is located at the other end of the trolley frame. The lifting winch is connected to the lifting pulley block, and the follower winch is connected to the follower pulley block. The trolley frame is hinged to the piston rod of the compensation cylinder.

[0007] The lifting winch is located at the front end of the boom. The lifting winch is equipped with a lifting cable and a lifting hook. One end of the lifting cable is connected to the lifting winch, and the other end of the lifting cable passes through the transfer pulley block and the lifting pulley block in sequence before extending to the rear end of the boom and connecting to the lifting hook. The lifting hook is connected to the heavy object.

[0008] The follow-up winch is located at the front end of the boom. The follow-up winch is equipped with a follow-up cable and a compensating hook. One end of the follow-up cable is connected to the follow-up winch, and the other end of the follow-up cable passes through the transfer pulley block and the follow-up pulley block in sequence before extending to the rear end of the boom and connecting to the compensating hook. The compensating hook is connected to the supply ship.

[0009] The above structure, through the installation of a follow-up winch and a lifting winch, allows the ship to transfer materials with a supply ship at sea. By connecting the compensation hook to the supply ship, the lifting winch lifts the heavy object. After the crane lifts the heavy object, due to sea conditions, both the ship and the supply ship will sway. When the supply ship sways, it will cause the compensation hook to move up and down, thereby increasing or decreasing the tension of the follow-up cable. This will cause the piston rod of the compensation cylinder to move and drive the compensation trolley to move, which in turn will cause the lifting cable to rise or fall. This ensures that the heavy object and the supply ship always maintain a certain safe distance, thus preventing the heavy object from contacting or colliding with the ship.

[0010] Furthermore, the transfer pulley assembly includes a transfer frame, a first transfer pulley bracket, a first transfer pulley, a second transfer pulley bracket, and a second transfer pulley. The transfer frame is mounted on the boom, and a transfer connecting shaft is provided on the transfer frame. The first transfer pulley bracket is fixed to the transfer connecting shaft, and the first transfer pulley is rotatably mounted on the first transfer pulley bracket via a first transfer bearing. The second transfer pulley bracket is fixed to the transfer connecting shaft on one side of the first transfer pulley bracket, and the second transfer pulley is rotatably mounted on the second transfer pulley bracket via a second transfer bearing. The other end of the lifting cable is wound around the first transfer pulley, and the other end of the follower cable is wound around the second transfer pulley.

[0011] This setup, through the action of the transfer pulley block, makes the connection between the follower cable and the lifting cable and the compensation trolley neater, preventing the problem of tangled ropes.

[0012] Furthermore, the follower pulley group includes a first follower pulley, a second follower pulley, and a third follower pulley. The first follower pulley is rotatably disposed on one side of the other end of the trolley frame via a first follower pulley shaft. The second follower pulley is rotatably disposed on the other side of the trolley frame corresponding to the first follower pulley via a second follower pulley shaft. The third follower pulley is rotatably disposed in the middle of the trolley frame via a third follower pulley shaft. The other end of the follower cable passes sequentially around the first follower pulley, the third follower pulley, and the second follower pulley before extending to the end of the boom and connecting to a compensating hook.

[0013] With this setup, the compensation trolley can be moved when the tension of the follower cable increases or decreases, thanks to the configuration of the follower pulley system.

[0014] Furthermore, the lifting pulley block includes a lifting pulley, which is rotatably mounted at one end of the trolley frame via a lifting pulley axle; the other end of the lifting cable passes around the lifting pulley and extends to the end of the boom and is connected to the lifting hook.

[0015] With the above settings, when the compensation trolley moves, it can drive the lifting cable to rise or fall, thereby controlling the height between the heavy object and the supply ship.

[0016] Furthermore, an auxiliary lifting pulley is provided at the end of the boom. The auxiliary lifting pulley is rotatably mounted at the end of the boom via a first auxiliary pulley shaft. The other end of the lifting cable passes through the transfer pulley block, the lifting pulley block and the auxiliary lifting pulley in sequence before connecting to the lifting hook.

[0017] The above setup, through the lifting auxiliary pulley, can better guide the lifting cable, thus facilitating the lifting of heavy objects.

[0018] Furthermore, a follower auxiliary pulley is provided at the end of the boom. The follower auxiliary pulley is rotatably mounted at the end of the boom via a second auxiliary pulley shaft. The other end of the follower cable passes through the transfer pulley group, the follower pulley group, and the follower auxiliary pulley in sequence before connecting to the compensation hook.

[0019] The above setup, through the follow-up auxiliary pulley, can better guide the follow-up cable, thus facilitating connection with the supply ship.

[0020] Furthermore, the trolley track includes an upper track and a lower track. The upper track is mounted on the boom, and the lower track is connected to the upper track via a track connecting bracket. The compensation trolley is positioned between the upper and lower tracks. Movable rollers are provided at the top and bottom of the trolley frame of the compensation trolley. The movable roller at the top of the trolley frame is in rolling connection with the first upper contact surface of the upper track, and the movable roller at the bottom of the trolley frame is in rolling connection with the first lower contact surface of the lower track.

[0021] The above setup allows for easy compensation of the trolley's movement via movable rollers, resulting in a simple and effective structure.

[0022] Furthermore, auxiliary rollers are provided at the top and bottom of the trolley frame. The auxiliary roller at the top of the trolley frame is in rolling connection with the second upper contact surface of the upper rail, and the auxiliary roller at the bottom of the trolley frame is in rolling connection with the second lower contact surface of the lower rail.

[0023] The above settings, through the configuration of the auxiliary rollers, can increase the stability of the trolley's movement. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the crane compensation mechanism of the present invention.

[0025] Figure 2 This is a schematic diagram of the compensation device of the present invention.

[0026] Figure 3 This is a front view of the compensation vehicle of the present invention.

[0027] Figure 4 This is a schematic diagram of the transfer pulley system of the present invention.

[0028] Figure 5 This is a simplified schematic diagram of the winding method of the follower cable of the present invention.

[0029] Figure 6 This is a simplified schematic diagram of the winding method of the lifting cable of the present invention.

[0030] Figure 7 for Figure 2 Enlarged view of point A in the middle.

[0031] Figure 8 This is a simplified schematic diagram of the trolley track of the present invention. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0033] like Figures 1 to 8 As shown, a crane compensation mechanism includes a lifting winch 11, a follow-up winch 12, and a compensation device 2 mounted on the crane boom 1. The compensation device 2 includes a compensation cylinder 21 and a compensation trolley 22. A trolley track 13 is provided in the middle of the boom 1, and a compensation cylinder 21 is provided at one end of the trolley track 13. The compensation trolley 22 is mounted on the trolley track 13 and slides along the length of the trolley track 13. The piston rod of the compensation cylinder 21 is connected to the compensation trolley 22. A transfer pulley block 3 is provided on the boom 1 at the end of the compensation cylinder 21 away from the trolley track 13.

[0034] The compensation trolley 22 includes a trolley frame 221, a lifting pulley block 4, and a follower pulley block 5. The lifting pulley block 4 is located at one end of the trolley frame 221, and the follower pulley block 5 is located at the other end of the trolley frame 221. The lifting winch 11 is connected to the lifting pulley block 4, and the follower winch 12 is connected to the follower pulley block 5. The trolley frame 221 is hinged to the piston rod of the compensation cylinder 21.

[0035] The lifting winch 11 is located at the front end of the boom 1. The lifting winch 11 is equipped with a lifting cable 111 and a lifting hook 112. One end of the lifting cable 111 is connected to the lifting winch 11, and the other end of the lifting cable 111 passes through the transfer pulley block 3 and the lifting pulley block 4 in sequence before extending to the rear end of the boom 1 and connecting to the lifting hook 112. The lifting hook 112 is connected to the load 100. The lifting winch drives the lifting cable to be retrieved and released.

[0036] The follower winch 12 is located at the front end of the boom 1. The follower winch 12 is equipped with a follower cable 121 and a compensating hook 122. One end of the follower cable 121 is connected to the follower winch 12, and the other end of the follower cable 121 passes through the transfer pulley block 3 and the follower pulley block 5 in sequence and extends to the rear end of the boom 1 and is connected to the compensating hook 122. The compensating hook 122 is connected to the supply vessel 101. The follower winch drives the follower cable to be retrieved and released.

[0037] In this embodiment, when the compensating hook is not connected to the supply vessel, the pressure of the compensating cylinder and the tension of the follower cable are in equilibrium. When the compensating hook is connected to the supply vessel, as the tension of the follower cable increases, the follower cable moves downward. The tension of the follower cable overcomes the hydraulic pressure of the compensating cylinder, thereby driving the compensating trolley to move closer to the compensating cylinder. This causes the piston rod of the compensating cylinder to move into the cylinder body, which in turn drives the lifting cable to move downward. When the tension of the follower cable decreases, the follower cable moves upward. The hydraulic pressure of the compensating cylinder overcomes the tension of the follower cable, causing the compensating cylinder to extend its piston rod and drive the compensating trolley to move away from the compensating cylinder, which in turn drives the lifting cable to move upward.

[0038] Meanwhile, since there is no direct contact between the lifting cable and the follower cable, the lifting winch can drive the lifting cable to rise independently. During the process of the lifting winch driving the lifting cable to rise, the compensation trolley moves by the movement of the follower cable to adjust the safe distance between the load and the supply ship. In this embodiment, the adjustment method only changes the vertical height of the load by adjusting the position of the lifting pulley block, without directly affecting the operation of the lifting winch. Therefore, when the compensation device is working, it will not affect the normal lifting of the load. After the load is lifted to a sufficient height, the connection between the compensation hook and the supply ship can be disconnected, and the cargo can be transferred to the ship.

[0039] The above structure, through the setting of the follower winch 12 and the lifting winch 11, when the main ship is transferring materials with the supply ship at sea, by connecting the compensation hook 122 to the supply ship 101, the lifting winch 11 lifts the heavy object 100. After the crane lifts the heavy object 100, due to the wind and waves at sea, the main ship and the supply ship will sway. When the supply ship sways, it will drive the compensation hook 122 to move up and down, thereby increasing or decreasing the tension of the follower cable 121, which in turn drives the piston rod of the compensation cylinder 21 to move and drives the compensation trolley 22 to move, thereby driving the lifting cable 111 to rise or fall. In this way, the heavy object 100 and the supply ship 101 always maintain a certain safe distance, thereby preventing the heavy object from contacting and colliding with the ship.

[0040] In this embodiment, a crane is installed on the main ship, and the heavy object is located on the supply ship. The heavy object is transferred from the supply ship to the main ship by the crane.

[0041] like Figure 4 As shown, the transfer pulley block 3 includes a transfer frame (not shown in the figure), a first transfer pulley bracket 32, a first transfer pulley 33, a second transfer pulley bracket 34, and a second transfer pulley 35. The transfer frame is mounted on the boom, and a transfer connecting shaft 30 is provided on the transfer frame. The first transfer pulley bracket 32 ​​is fixed on the transfer connecting shaft 30, and the first transfer pulley 33 is rotatably mounted on the first transfer pulley bracket 32 ​​via a first transfer bearing 331. The second transfer pulley bracket 34 is fixed on the transfer connecting shaft 30 on one side of the first transfer pulley bracket 32, and the second transfer pulley 35 is rotatably mounted on the second transfer pulley bracket 34 via a second transfer bearing 351. The other end of the lifting cable 111 is wound around the first transfer pulley 33, and the other end of the follower cable 121 is wound around the second transfer pulley 35.

[0042] This setup, through the action of the transfer pulley block, makes the connection between the follower cable and the lifting cable and the compensation trolley neater, preventing the problem of tangled ropes.

[0043] like Figure 2 and Figure 3 As shown, the follower pulley group 5 includes a first follower pulley 51, a second follower pulley 52, and a third follower pulley 53. The first follower pulley 51 is rotatably disposed on one side of the other end of the trolley frame 13 via a first follower pulley shaft 511. The second follower pulley 52 is rotatably disposed on the other side of the trolley frame 221, corresponding to the first follower pulley 51, via a second follower pulley shaft 521. The third follower pulley 53 is rotatably disposed in the middle of the trolley frame 221 via a third follower pulley shaft 531. The other end of the follower cable 121 passes sequentially around the first follower pulley 51, the third follower pulley 53, and the second follower pulley 52 before extending to the end of the boom 1 and connecting to the compensating hook 122.

[0044] With this setup, the compensation trolley can be moved when the tension of the follower cable 454 increases or decreases, thanks to the follower pulley block 5.

[0045] like Figure 2 , Figure 3 and Figure 6 As shown, the lifting pulley block 4 includes a lifting pulley 41, which is rotatably mounted at one end of the trolley frame 221 via a lifting pulley shaft 411; the other end of the lifting cable 111 passes around the lifting pulley 41 and extends to the end of the boom 1 and is connected to the lifting hook 112.

[0046] With the above settings, when the compensation trolley moves, it can drive the lifting cable to rise or fall, thereby controlling the height between the heavy object and the supply ship.

[0047] like Figure 1 and Figure 6 As shown, a lifting auxiliary pulley 115 is provided at the end of the boom 1. The lifting auxiliary pulley 115 is rotatably disposed at the end of the boom 1 via a first auxiliary pulley shaft (not shown in the figure). The other end of the lifting cable 111 passes through the transfer pulley block 3, the lifting pulley block 4 and the lifting auxiliary pulley 115 in sequence and is then connected to the lifting hook 112.

[0048] The above setup, through the lifting auxiliary pulley, can better guide the lifting cable, thus facilitating the lifting of heavy objects.

[0049] like Figure 1 and Figure 5 As shown, a follower auxiliary pulley 125 is also provided at the end of the boom 1. The follower auxiliary pulley 125 is rotatably disposed at the end of the boom 1 via a second auxiliary pulley shaft (not shown in the figure). The other end of the follower cable 121 passes through the transfer pulley group 3, the follower pulley group 5 and the follower auxiliary pulley 125 in sequence and then connects to the compensation hook 122.

[0050] The above setup, through the follow-up auxiliary pulley, can better guide the follow-up cable, thus facilitating connection with the supply ship.

[0051] like Figure 7 and Figure 8 As shown, the trolley track 13 includes an upper track 131 and a lower track 132. The upper track 131 is mounted on the boom 1, and the lower track 132 is connected to the upper track 131 via a track connecting bracket 133. The compensation trolley 22 is mounted between the upper track 131 and the lower track 132. Movable rollers 222 are provided at the top and bottom of the trolley frame 221 of the compensation trolley 22. The movable roller 222 at the top of the trolley frame 221 is in rolling connection with the first upper contact surface 1311 of the upper track 131, and the movable roller 222 at the bottom of the trolley frame 221 is in rolling connection with the first lower contact surface 1321 of the lower track 132.

[0052] The above setup allows for easy compensation of the trolley's movement via movable rollers, resulting in a simple and effective structure.

[0053] Furthermore, auxiliary rollers 223 are provided at the top and bottom of the trolley frame 221. The auxiliary roller 223 at the top of the trolley frame 221 is in rolling connection with the second upper contact surface 1312 of the upper rail 131, and the auxiliary roller 223 at the bottom of the trolley frame 221 is in rolling connection with the second lower contact surface 1322 of the lower rail 132.

[0054] The above settings, through the configuration of the auxiliary rollers, can increase the stability of the trolley's movement.

Claims

1. A crane compensation mechanism, comprising a lifting winch, a follow-up winch, and a compensation device mounted on the crane boom, characterized in that: The compensation device includes a compensation cylinder and a compensation trolley. A trolley track is provided in the middle of the boom, and a compensation cylinder is provided at one end of the trolley track. The compensation trolley is set on the trolley track and slides along the length of the trolley track. The piston rod of the compensation cylinder is connected to the compensation trolley. A transfer pulley block is provided on the boom at the end of the compensation cylinder away from the trolley track. The compensation trolley includes a trolley frame, a lifting pulley block, and a follower pulley block. The lifting pulley block is located at one end of the trolley frame, and the follower pulley block is located at the other end of the trolley frame. The lifting winch is connected to the lifting pulley block, and the follower winch is connected to the follower pulley block. The trolley frame is hinged to the piston rod of the compensation cylinder. The lifting winch is located at the front end of the boom. The lifting winch is equipped with a lifting cable and a lifting hook. One end of the lifting cable is connected to the lifting winch, and the other end of the lifting cable passes through the transfer pulley block and the lifting pulley block in sequence before extending to the rear end of the boom and connecting to the lifting hook. The lifting hook is connected to the heavy object. The follow-up winch is located at the front end of the boom. The follow-up winch is equipped with a follow-up cable and a compensating hook. One end of the follow-up cable is connected to the follow-up winch, and the other end of the follow-up cable passes through the transfer pulley block and the follow-up pulley block in sequence before extending to the rear end of the boom and connecting to the compensating hook. The compensating hook is connected to the supply ship. The transfer pulley assembly includes a transfer frame, a first transfer pulley bracket, a first transfer pulley, a second transfer pulley bracket, and a second transfer pulley. The transfer frame is mounted on the boom and has a transfer connecting shaft. The first transfer pulley bracket is fixed to the transfer connecting shaft, and the first transfer pulley is rotatably mounted on the first transfer pulley bracket via a first transfer bearing. The second transfer pulley bracket is fixed to the transfer connecting shaft on one side of the first transfer pulley bracket, and the second transfer pulley is rotatably mounted on the second transfer pulley bracket via a second transfer bearing. The other end of the lifting cable is wound around the first transfer pulley, and the other end of the follower cable is wound around the second transfer pulley. The trolley track includes an upper track and a lower track. The upper track is mounted on the boom, and the lower track is connected to the upper track via a track connecting bracket. The compensation trolley is positioned between the upper and lower tracks. Movable rollers are provided at the top and bottom of the trolley frame. The movable roller at the top of the trolley frame is in rolling contact with the first upper contact surface of the upper track, and the movable roller at the bottom of the trolley frame is in rolling contact with the first lower contact surface of the lower track.

2. The crane compensation mechanism according to claim 1, characterized in that: The following pulley assembly includes a first following pulley, a second following pulley, and a third following pulley. The first following pulley is rotatably mounted on one side of the other end of the trolley frame via a first following pulley shaft. The second following pulley is rotatably mounted on the other side of the trolley frame corresponding to the first following pulley via a second following pulley shaft. The third following pulley is rotatably mounted in the middle of the trolley frame via a third following pulley shaft. The other end of the following cable passes sequentially around the first following pulley, the third following pulley, and the second following pulley before extending to the end of the boom and connecting to a compensating hook.

3. The crane compensation mechanism according to claim 1, characterized in that: The lifting pulley block includes a lifting pulley, which is rotatably mounted at one end of the trolley frame via a lifting pulley axle; the other end of the lifting cable passes around the lifting pulley and extends to the end of the boom and is connected to the lifting hook.

4. The crane compensation mechanism according to claim 1, characterized in that: An auxiliary lifting pulley is provided at the end of the boom. The auxiliary lifting pulley is rotatably mounted at the end of the boom via a first auxiliary pulley shaft. The other end of the lifting cable passes through the transfer pulley block, the lifting pulley block and the auxiliary lifting pulley in sequence before connecting to the lifting hook.

5. A crane compensation mechanism according to claim 1, characterized in that: At the end of the boom, a follower auxiliary pulley is provided. The follower auxiliary pulley is rotatably mounted at the end of the boom via a second auxiliary pulley shaft. The other end of the follower cable passes through the transfer pulley group, the follower pulley group, and the follower auxiliary pulley in sequence before connecting to the compensation hook.

6. A crane compensation mechanism according to claim 1, characterized in that: Auxiliary rollers are also provided at the top and bottom of the trolley frame. The auxiliary roller at the top of the trolley frame is in rolling connection with the second upper contact surface of the upper rail, and the auxiliary roller at the bottom of the trolley frame is in rolling connection with the second lower contact surface of the lower rail.

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