A single-crane hoisting system

Abstract

The application provides a single-winch hoisting system, which comprises a crane, a main hook cable mechanism is arranged on the crane, the main hook cable mechanism comprises a main hook winch, a cable, a pulley block and a lifting hook, the main hook winch is located at the bottom end of the crane pile leg far away from the lifting arm side, the pulley block is arranged on the top end of the crane pile leg, the bottom end of the other side of the crane pile leg and the lifting arm of the crane, one end of the cable is wound on the drum of the main hook winch, the other end of the cable extends upwards to the top end of the crane pile leg and sequentially passes through the pulley block at the top end of the crane pile leg, the pulley block at the bottom end of the crane pile leg and the pulley block at the lifting arm of the crane to connect the lifting hook; the above structure can prevent the interference of the pile leg to the cable, so that the single winch can be conveniently applied to the crane.

Description

Technical Field

[0001] This invention relates to the field of crane single winch lifting technology, and more specifically to a single winch lifting system. Background Technology

[0002] A crane is a multi-action lifting machine that vertically lifts and horizontally moves heavy objects within a certain range. For some heavy-duty cranes, if the tonnage of the goods being lifted is too large, a large-tonnage crane is needed to better handle the goods. A large-tonnage crane means that the crane legs will be larger, while the boom will be narrower relative to the legs, and the hook is usually located at the end of the boom. Since the side of the legs where the boom is installed is obstructed by the boom, making it difficult to install other drive components, a winch needs to be installed on the side of the legs away from the boom for easy maintenance. Therefore, in the existing technology, double winches are usually installed on both sides of the legs, so that the double cables can be connected to the hook on both sides of the boom without being interfered with by the legs.

[0003] If only a single winch is used, the cable is connected to the hook through only one cable. When connecting the winch and the hook, the pile legs can easily block the cable, which will affect the connection between the cable and the winch and the hook. In addition, the existing booms are generally lifted by hydraulic means, which increases the weight of the boom and makes it difficult for the boom to maintain balance on the crane pile legs. Summary of the Invention

[0004] This invention provides a single winch lifting system that can prevent the pile legs from interfering with the cable, thus facilitating the application of the single winch on cranes and ensuring high reliability during boom lifting.

[0005] To achieve the above objectives, the technical solution of the present invention is: a single-winch lifting system, including a crane, on which a main hook cable mechanism is provided. The main hook cable mechanism includes a main hook winch, a cable, a pulley block, and a hook. The main hook winch is located at the bottom end of the crane leg on the side away from the boom. The pulley block is arranged at the top end of the crane leg, the bottom end of the other side of the crane leg, and the boom of the crane. One end of the cable is wound around the drum of the main hook winch, and the other end of the cable extends upward to the top end of the crane leg and passes through the hook in sequence. The pulley block at the top of the crane leg, the pulley block at the bottom of the crane leg, and the pulley block at the crane boom are connected to the hook. The crane is also equipped with a boom lifting mechanism, which includes a lifting winch and a lifting cable. One end of the boom is hinged to the crane leg. The lifting winch is located at the bottom end of the crane leg on the side away from the boom. One end of the lifting cable is wound around the drum of the lifting winch, and the other end of the lifting cable extends upward and passes through the lifting pulley at the top of the crane leg to connect to the end of the boom away from the crane leg.

[0006] The aforementioned structure involves the other end of the cable extending upwards and passing through a pulley block located at the top of the crane leg. This allows the cable to wrap around the crane leg from one side to the other, then pass through a pulley block on the other side of the crane leg. From there, it passes through the pulley block on the crane boom and connects to the hook. By wrapping the cable upwards around the crane leg, the crane leg does not obstruct the cable. After wrapping around the crane leg, the cable extends downwards and passes through a pulley block on the other side of the crane leg. This design allows the cable to... At the same time, it can extend towards the center of the boom, so that the cable will not exert a bias force on the boom. At the same time, when the hoisting winch drives the hoisting cable to lift the boom, the cable position is higher than the boom through the action of the crane legs. This allows the cable to pull the boom and achieve the boom's balance, making the boom's rise stable. Since the hoisting winch is located at the end away from the boom, the hoisting winch drives the wire rope to drive the boom's lifting action, while also ensuring the stability of the boom on the crane legs.

[0007] Furthermore, the pulley block includes a first pulley, a second pulley, and a third pulley. The main hook winch is located on the side of the crane leg away from the boom. The first pulley is located at the top of the crane leg, the second pulley is located on the side of the crane leg closer to the boom, and the third pulley is located at the end of the boom away from the crane leg. One end of the cable is wound around the drum of the main hook winch, and the other end of the cable extends upward, passes through the first pulley at the top of the crane leg, then extends downward, passes through the second pulley, extends towards the end of the boom, and passes through the third pulley. A hook is provided at the other end of the cable. By setting up the pulley block, it is possible to easily bypass the crane leg and connect the hook.

[0008] Furthermore, a fourth pulley is provided at the end of the boom, and the other end of the cable passes through the fourth pulley and extends downward. A force-measuring pulley is provided on the boom between the fourth pulley and the third pulley. The tension of the cable is detected by setting the force-measuring pulley, which facilitates the control of the cable.

[0009] Furthermore, the fourth pulley is inclined relative to the third pulley, and the force-measuring pulley is also inclined relative to the third pulley. As such, since the fourth pulley is located at the end of the boom, and the end of the boom is usually inclined inward at the end where the boom connects to the pile leg platform, the inclined setting of the fourth pulley makes it easier for the cable to pass through the fourth pulley.

[0010] Furthermore, the crane is equipped with an auxiliary hook cable mechanism, which includes an auxiliary hook winch, an auxiliary hook cable, an auxiliary hook pulley, and an auxiliary hook. The auxiliary hook pulley is located at the top of the crane leg, at the bottom of the crane leg near the boom, and at the end of the boom. The auxiliary hook winch is located on the side of the crane leg away from the boom. One end of the auxiliary hook cable is wound around the drum of the auxiliary hook winch, and the other end of the auxiliary hook cable extends upward and passes sequentially through the auxiliary hook pulley located at the top of the crane leg, the auxiliary hook pulley located at the bottom of the crane leg, and the auxiliary hook pulley located at the end of the boom, connecting to the auxiliary hook. By setting up the auxiliary hook cable mechanism, the crane plays an auxiliary role when lifting goods.

[0011] Furthermore, a secondary hook force-measuring pulley is provided at the end of the boom, and the other end of the secondary hook cable extends downward through the force-measuring pulley and connects to the secondary hook; by setting the force-measuring pulley, the tension of the secondary hook cable is detected, thereby facilitating the control of the secondary hook cable.

[0012] Furthermore, the boom lifting mechanism includes a lifting winch and a lifting cable. One end of the boom is hinged to the crane leg. The lifting winch is located at the bottom end of the crane leg. One end of the lifting cable is wound around the drum of the lifting winch, and the other end of the lifting cable extends upward and passes through a lifting pulley located at the top of the crane leg, connecting to the end of the boom away from the crane leg. By raising or lowering the lifting cable through the lifting winch, the boom can be controlled to swing up or down. The structure is simple and effective. Attached Figure Description

[0013] Figure 1 This is a front view of the crane of the present invention.

[0014] Figure 2 This is a top view of the pile leg of the present invention.

[0015] Figure 3 This is a top view of the boom of the present invention. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] like Figures 1 to 3As shown, a single-winch lifting system includes a crane 1. A main hook cable mechanism is provided on the crane 1. The main hook cable mechanism includes a main hook winch 21, a cable 22, a pulley block, and a hook 23. The main hook winch 21 is located at the bottom end of the crane 1 leg 11 on the side away from the boom 12. The pulley block is arranged on the top end of the crane leg 11, the bottom end of the other side of the crane leg 11, and the boom 12 of the crane 1. One end of the cable 22 is wound around the drum of the main hook winch 21, and the other end of the cable 22 extends upward to the top end of the crane leg 11 and passes sequentially through the pulley block located at the top end of the crane leg 11, the pulley block located at the bottom end of the crane leg 11, and the pulley block located at the boom 12 of the crane to connect to the hook 23.

[0018] like Figures 1 to 3 As shown, the pulley system includes a first pulley 24, a second pulley 25, and a third pulley 26. The main hook winch is located on the side of the crane leg 11 away from the boom 12. The first pulley 24 is located at the top of the crane leg 11, the second pulley 25 is located on the side of the crane leg 11 near the boom 12, and the third pulley 26 is located at the end of the boom 12 away from the crane leg 11. One end of the cable 22 is wound around the drum of the main hook winch 21, and the other end of the cable 22 extends upward through the first pulley 24 at the top of the crane leg 11, then extends downward through the second pulley 25, then extends towards the end of the boom 12 and through the third pulley 26. A hook 24 is provided at the other end of the cable 22. By setting up the pulley system, it is possible to easily bypass the crane leg and connect the hook.

[0019] like Figures 1 to 3 As shown, a fourth pulley 27 is provided at the end of the boom 12. The other end of the cable 22 passes through the fourth pulley 27 and extends downward. A force measuring pulley 28 is provided on the boom between the fourth pulley 27 and the third pulley 26. The tension of the cable 22 is detected by setting the force measuring pulley 28, which facilitates the control of the cable 22.

[0020] The fourth pulley 27 is inclined relative to the third pulley 26, and the force measuring pulley 28 is also inclined relative to the third pulley 26. As such, since the fourth pulley 27 is located at the end of the boom 12, and the end of the boom 12 is usually inclined inward at the end that connects the boom 12 to the pile leg platform, the inclined setting of the fourth pulley 27 makes it easier for the cable to pass through the fourth pulley 27.

[0021] like Figure 2 and Figure 3As shown, the crane 1 is also equipped with an auxiliary hook cable mechanism, which includes an auxiliary hook winch 31, an auxiliary hook cable, an auxiliary hook pulley 33, and an auxiliary hook 34. The auxiliary hook pulley 33 is located at the top of the crane leg 11, at the bottom of the crane leg 11 near the boom 12, and at the end of the boom 12. The auxiliary hook winch 31 is located on the side of the crane leg 11 away from the boom 12. One end of the auxiliary hook cable (not shown) is wound around the drum of the auxiliary hook winch 31, and the other end of the auxiliary hook cable extends upward and passes sequentially through the auxiliary hook pulley (not shown) at the top of the crane leg 11, the auxiliary hook pulley 33 at the bottom of the crane leg 11, and the auxiliary hook pulley 33 at the end of the boom 12, connecting to the auxiliary hook 34. By setting up the auxiliary hook cable mechanism, the crane plays an auxiliary role when lifting goods.

[0022] like Figure 3 As shown, a secondary hook force-measuring pulley 35 is provided at the end of the boom 12. The other end of the secondary hook cable extends downward through the force-measuring pulley 35 and connects to the secondary hook 34. By setting the force-measuring pulley 35, the tension of the secondary hook cable is detected, which facilitates the control of the secondary hook cable.

[0023] like Figure 1 and Figure 2 As shown, the crane 1 is also equipped with a boom lifting mechanism, which includes a lifting winch 41 and a lifting cable 42. One end of the boom 12 is hinged to the crane leg 11. The lifting winch 41 is located at the bottom end of the crane leg 11. One end of the lifting cable 42 is wound around the drum of the lifting winch 41, and the other end of the lifting cable 42 extends upward and passes through the lifting pulley 43 located at the top of the crane leg 11, connecting to the end of the boom 12 away from the crane leg 11. By raising or lowering the lifting cable through the lifting winch 41, the boom 12 can be controlled to swing up or down. The structure is simple and effective.

[0024] The working principle of this invention is as follows: The other end of the cable 22 extends upward and passes through the pulley block located at the top of the crane leg 11, so that the cable 22 wraps around from one side of the crane leg 11 to the other side and passes through the pulley block located on the other side of the crane leg 11. Thus, it can pass through the pulley block located on the crane boom 12 and connect with the hook 23. In this way, by wrapping the cable 22 upward around the leg 11, the leg 11 will not obstruct the cable 22. After wrapping around the leg 11, the cable 22 extends downward and passes through the pulley block on the other side of the crane leg 11. Thus, the cable 22 can extend towards the center of the boom 12 while wrapping around the leg, so that the cable 22 will not exert a bias force on the boom 12. At the same time, when the hoisting winch drives the hoisting cable to raise the boom, the action of the crane leg makes the position of the cable higher than the boom, so that the cable can pull the boom and achieve the balance of the boom, making the rise of the boom stable.

Claims

1. A hoisting system for a single winch, comprising a crane, wherein a main hook cable mechanism is provided on the crane, characterized in that: The main hook cable mechanism includes a main hook winch, a cable, a pulley block, and a hook. The main hook winch is located at the bottom end of the crane leg on the side away from the boom. The pulley block is arranged at the top of the crane leg, the bottom end of the other side of the crane leg, and the boom of the crane. One end of the cable is wound around the drum of the main hook winch, and the other end of the cable extends upward to the top of the crane leg and passes sequentially through the pulley block located at the top of the crane leg, the pulley block located at the bottom of the crane leg, and the pulley block located on the boom of the crane to connect to the hook. The crane is also equipped with a boom lifting mechanism, which includes a lifting winch and a lifting cable. One end of the boom is hinged to the crane leg. The hoisting winch is located at the bottom end of the crane leg on the side away from the boom. One end of the hoisting cable is wound around the drum of the hoisting winch, and the other end of the hoisting cable extends upward and passes through the hoisting pulley located at the top of the crane leg to connect the end of the boom away from the crane leg. The pulley group includes a first pulley, a second pulley, and a third pulley. One end of the cable is wound around the drum of the main hook winch, and the other end of the cable extends upward and passes through the first pulley at the top of the crane leg, then extends downward and passes through the second pulley, then extends to the end of the boom and passes through the third pulley. A hook is provided at the other end of the cable, so that the cable can extend towards the center of the boom while bypassing the crane leg.

2. The lifting system of a single winch according to claim 1, characterized in that: The main hook winch is located on the side of the crane leg away from the boom; the first pulley is located at the top of the crane leg, the second pulley is located on the side of the crane leg close to the boom, and the third pulley is located at the end of the boom away from the crane leg.

3. The lifting system of a single winch according to claim 2, characterized in that: A fourth pulley is provided at the end of the boom, and the other end of the cable passes through the fourth pulley and extends downward. A force-measuring pulley is provided on the boom between the fourth pulley and the third pulley.

4. The lifting system of a single winch according to claim 3, characterized in that: The fourth pulley is inclined relative to the third pulley, and the force measuring pulley is also inclined relative to the third pulley.

5. The lifting system of a single winch according to claim 1, characterized in that: The crane is also equipped with a secondary hook cable mechanism, which includes a secondary hook winch, a secondary hook cable, a secondary hook pulley, and a secondary hook. The secondary hook pulley is located at the top of the crane leg, at the bottom of the crane leg near the boom, and at the end of the boom. The secondary hook winch is located on the side of the crane leg away from the boom. One end of the secondary hook cable is wound around the drum of the secondary hook winch, and the other end of the secondary hook cable extends upward and passes sequentially through the secondary hook pulley located at the top of the crane leg, the secondary hook pulley located at the bottom of the crane leg, and the secondary hook pulley located at the end of the boom to connect with the secondary hook.

6. The lifting system of a single winch according to claim 5, characterized in that: At the end of the boom, there is a secondary hook force-measuring pulley, and the other end of the secondary hook cable extends downward through the force-measuring pulley and connects to the secondary hook.

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