A drum structure of a gantry crane for lifting hatch covers in a shipyard dock

Abstract

The utility model belongs to the reel technical field, specifically is a kind of door seat machine's reel structure of shipyard dock lifting hatch cover, including support base;The top of support base is fixedly connected with portal frame, the top of the inside of portal frame is rotatably connected with rotating shaft, the surface of rotating shaft is fixedly connected with winding roller, the bottom of the inside of portal frame one side is fixedly connected with fixed sleeve, the surface of fixed sleeve is slidably connected with guide sliding sleeve, the one side of guide sliding sleeve is fixedly connected with sleeve rope ring, the surface of guide sliding sleeve on sleeve rope ring one side is fixedly connected with connecting rod;By setting reciprocating screw, it drives reciprocating sliding sleeve to do reciprocating motion, to drive lifting rope to move back and forth, so that it can be evenly wound on winding roller, and then lifting rope is evenly stressed, reduce the risk of breakage, to ensure the service life of lifting rope, reduce the cost of maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of drum technology, specifically a drum structure for a gantry crane used for lifting hatch covers in a shipyard dock. Background Technology

[0002] A drum is a common mechanical component widely used in industries such as lifting, transportation, textiles, printing, and packaging. Its core function is to wind, store, or release objects such as cables, ropes, and strips through rotation. As the winding core of a mechanical system, the design of the drum needs to take into account factors such as load, space, and cost. In practical applications, selecting the appropriate drum type and material, and performing regular maintenance, can significantly improve the reliability and service life of the equipment.

[0003] Chinese patent CN217921227U discloses a drum lifting device, relating to the field of lifting equipment. It includes a base plate, on which a lifting frame is slidably mounted horizontally. The base plate has a clearance groove for placing the drum. The lifting frame is adjustable in height and has lifting components that engage with the drum's hook portion. The base plate also has guide components for guiding the drum from a horizontal to a vertical position. This application helps reduce labor costs, decreases the workload of workers, and improves the automation level of drum shape changes.

[0004] As mentioned above, the patent provides a drum lifting device that helps reduce labor costs, decreases the workload of workers, and improves the automation of drum shape changes. However, during winding, the lifting rope is first wound around one point on the winding roller. As winding continues, a slope is formed at that point, causing the lifting rope to slide down continuously. This process of winding and sliding down is repeated, resulting in uneven distribution of the lifting rope on the winding roller. When lifting heavy objects, this uneven distribution can lead to uneven stress, potentially causing the lifting rope to break, affecting its service life, and increasing maintenance costs.

[0005] Therefore, a drum structure for a gantry crane used for lifting hatch covers in shipyard docks is proposed to address the above problems. Utility Model Content

[0006] To overcome the shortcomings of existing technologies and solve the problem of uneven distribution of the lifting rope on the winding roller, which leads to uneven stress when lifting heavy objects, potentially causing the lifting rope to break, affecting its service life, and increasing maintenance costs, a drum structure for a gantry crane used for lifting hatch covers in shipyard docks is proposed.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: The drum structure of a gantry crane for lifting hatch covers in a shipyard dry dock, as described in this utility model, includes a support base; a gantry frame is fixedly connected to the top of the support base; a rotating shaft is rotatably connected to the top of the inner side of the gantry frame; a take-up roller is fixedly connected to the surface of the rotating shaft; a fixed sleeve is fixedly connected to one side of the bottom inner side of the gantry frame; a guide sleeve is slidably connected to the surface of the fixed sleeve; a rope loop is fixedly connected to one side of the guide sleeve; a connecting rod is fixedly connected to the surface of the guide sleeve located on the side of the rope loop; a reciprocating sliding sleeve is fixedly connected to the surface of the guide sleeve through the connecting rod; a reciprocating screw is threadedly connected to the inner wall of the reciprocating sliding sleeve; both ends of the reciprocating screw are rotatably connected to the inner wall of the gantry frame; an auxiliary pulley group is fixedly connected to one end of the rotating shaft; and one end of the rotating shaft is fixedly connected to one end of the reciprocating screw through the auxiliary pulley group.

[0008] Preferably, a motor cylinder is fixedly connected to the bottom of one side of the gantry frame, an electric motor is fixedly connected inside the motor cylinder, the output shaft of the electric motor is fixedly connected to a transmission shaft through a coupling, one end of the transmission shaft is fixedly connected to a drive pulley set, and one end of the transmission shaft is fixedly connected to one end of the rotating shaft through the drive pulley set.

[0009] Preferably, one end of the drive shaft passes through the gantry and the fixed sleeve and extends to the side of the gantry away from the motor cylinder, and the end of the drive shaft located on the side of the gantry away from the motor cylinder is fixedly connected to one side of the drive pulley assembly.

[0010] Preferably, a placement cavity is provided inside one side of the gantry frame, the auxiliary pulley group is disposed inside the placement cavity, one end of the rotating shaft and the reciprocating screw both pass through the gantry frame and extend into the placement cavity, and the ends of the rotating shaft and the reciprocating screw located inside the placement cavity are respectively fixedly connected to one side of the auxiliary pulley group.

[0011] Preferably, the end of the rotating shaft away from the auxiliary pulley assembly passes through the gantry and extends to the side of the gantry away from the motor cylinder. The end of the rotating shaft located on the side of the gantry away from the motor cylinder is fixedly connected to one side of the active pulley assembly. A limit rod is fixedly connected between the inner sides of the gantry and below the take-up roller. The inner side of the connecting rod is slidably connected to the surface of the limit rod.

[0012] Preferably, inclined support plates are fixedly connected between the inner sides of the gantry frame, and multiple equidistant spring telescopic rods are fixedly connected to the surface of the inclined support plates, with arc-shaped locking plates fixedly connected to the top ends of the multiple spring telescopic rods.

[0013] The beneficial effects of this utility model are:

[0014] This utility model provides a drum structure for a gantry crane used for lifting hatch covers in a shipyard dock. By setting a reciprocating screw, it drives a reciprocating sliding sleeve to reciprocate, thereby driving the lifting rope to move back and forth, so that it can be evenly wound on the take-up roller. This results in uniform stress on the lifting rope, reduces the risk of breakage, ensures the service life of the lifting rope, and reduces maintenance costs.

[0015] This utility model provides a drum structure for a gantry crane used for lifting hatch covers in a shipyard dock. By setting an arc-shaped locking plate, it can move with the thickness of the winding lifting rope, while the whole can abut against the surface of the lifting rope to limit the lifting rope and prevent it from deviating too much, ensuring the stability after winding and further improving the stability after winding. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is the first perspective view of the present invention;

[0018] Figure 2 This is the second perspective view of the present invention;

[0019] Figure 3 This is the third perspective view of this utility model;

[0020] Figure 4 This is a cross-sectional view of the internal structure of the placement cavity in this utility model;

[0021] Figure 5 This is a perspective view of the electric motor transmission structure in this utility model;

[0022] Figure 6 This is a perspective view of the guide sleeve connection structure in this utility model;

[0023] Legend:

[0024] 1. Support base; 2. Gantry frame; 3. Rotating shaft; 4. Take-up roller; 5. Fixed sleeve; 6. Guide sleeve; 7. Rope loop; 8. Connecting rod; 9. Reciprocating sliding sleeve; 10. Reciprocating screw; 11. Auxiliary pulley assembly; 12. Motor cylinder; 13. Motor; 14. Drive shaft; 15. Drive pulley assembly; 16. Placement cavity; 17. Limiting rod; 18. Inclined support plate; 19. Spring telescopic rod; 20. Arc-shaped positioning plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Specific implementation examples are given below.

[0027] Please see Figures 1-6 This utility model provides a drum structure for a gantry crane used for lifting hatch covers in a shipyard dock, including a support base 1; a gantry frame 2 is fixedly connected to the top of the support base 1, a rotating shaft 3 is rotatably connected to the top of the inner side of the gantry frame 2, a take-up roller 4 is fixedly connected to the surface of the rotating shaft 3, a fixed sleeve 5 is fixedly connected to one side of the bottom inner side of the gantry frame 2, a guide sleeve 6 is slidably connected to the surface of the fixed sleeve 5, a rope loop 7 is fixedly connected to one side of the guide sleeve 6, a connecting rod 8 is fixedly connected to the surface of the guide sleeve 6 on one side of the rope loop 7, a reciprocating sliding sleeve 9 is fixedly connected to the surface of the guide sleeve 6 through the connecting rod 8, a reciprocating screw 10 is threadedly connected to the inner wall of the reciprocating sliding sleeve 9, both ends of the reciprocating screw 10 are rotatably connected to the inner wall of the gantry frame 2, an auxiliary pulley group 11 is fixedly connected to one end of the rotating shaft 3, and one end of the rotating shaft 3 is fixedly connected to one end of the reciprocating screw 10 through the auxiliary pulley group 11; during operation, the support base 1 supports the gantry frame 2, and the gantry... The gantry 2 supports the rotating shaft 3 and the reciprocating screw 10. During installation, the lifting rope needs to be wound downwards along the guide sleeve 6, then through the rope loop 7, and finally wound onto the take-up roller 4 via the rope loop 7. During take-up, due to the action of the auxiliary pulley group 11, the rotating shaft 3 and the reciprocating screw 10 rotate simultaneously. The rotation of the rotating shaft 3 drives the take-up roller 4 to rotate, thus winding the lifting rope. The rotation of the reciprocating screw 10 drives the reciprocating sliding sleeve 9 to slide back and forth. Then, the reciprocating sliding sleeve 9, in conjunction with the connecting rod 8, drives the guide sleeve 6 to slide back and forth on the fixed sleeve 5, thereby driving the lifting rope in the rope loop 7 to move back and forth, thus achieving the function of reciprocating take-up. The entire system, by setting the reciprocating screw 10, drives the reciprocating sliding sleeve 9 to move back and forth, thereby driving the lifting rope to move back and forth, so that it can be evenly wound on the take-up roller 4, thus ensuring that the lifting rope is evenly stressed, reducing the risk of breakage, thus ensuring the service life of the lifting rope and reducing maintenance costs.

[0028] Furthermore, such as Figure 1 , Figure 2 and Figure 4As shown, a motor cylinder 12 is fixedly connected to the bottom of one side of the gantry frame 2. An electric motor 13 is fixedly connected inside the motor cylinder 12. The output shaft of the electric motor 13 is fixedly connected to a drive shaft 14 via a coupling. One end of the drive shaft 14 is fixedly connected to a drive pulley assembly 15, and the other end of the drive shaft 14 is fixedly connected to one end of the rotating shaft 3 via the drive pulley assembly 15. One end of the drive shaft 14 passes through the gantry frame 2 and the fixed sleeve 5 and extends to the side of the gantry frame 2 away from the motor cylinder 12. The end of the drive shaft 14 on the side of the gantry frame 2 away from the motor cylinder 12 is fixedly connected to one side of the drive pulley assembly 15. A placement cavity 16 is provided inside one side of the gantry frame 2. An auxiliary pulley assembly 11 is located inside the placement cavity 16. One end of the rotating shaft 3 and the reciprocating screw 10 both pass through the gantry frame 2 and extend into the placement cavity 16. The ends of the rotating shaft 3 and the reciprocating screw 10 inside the placement cavity 16 are respectively fixedly connected to one side of the auxiliary pulley assembly 11. One end of the rotating shaft 3 away from the auxiliary pulley group 11 passes through the gantry 2 and extends to the side of the gantry 2 away from the motor cylinder 12. The end of the rotating shaft 3 located on the side of the gantry 2 away from the motor cylinder 12 is fixedly connected to one side of the active pulley group 15. A limit rod 17 is fixedly connected between the inner sides of the gantry 2 and below the winding roller 4. The inner side of the connecting rod 8 is slidably connected to the surface of the limit rod 17. During operation, the gantry 2 supports the motor cylinder 12 on one side. The motor cylinder 12 houses the motor 13 and protects it. After the motor 13 starts working, it drives the transmission shaft 14 to rotate. At the same time, the transmission shaft 14 can rotate inside the fixed sleeve 5. In addition, the surface of the transmission shaft 14 is provided with multiple protruding structures, while the inside of the fixed sleeve 5 is provided with multiple concave structures that can be adapted to the transmission shaft 14. This can limit the transmission shaft 14 and prevent it from shaking during rotation. After the transmission shaft 14 rotates, it works with the drive pulley group 15 to drive the rotating shaft 3 to start rotating, thereby providing power for the winding operation. In addition, a placement cavity 16 is opened inside one side of the gantry 2 to place the driven pulley group. The limiting rod 17 is fixed inside the gantry 2, and the connecting rod 8 can slide on its surface. The limiting rod 17 is used to limit the connecting rod 8.

[0029] Furthermore, such as Figure 3As shown, an inclined support plate 18 is fixedly connected to the inner side of the gantry 2. Multiple equidistant spring telescopic rods 19 are fixedly connected to the surface of the inclined support plate 18, and an arc-shaped locking plate 20 is fixedly connected to the top of each spring telescopic rod 19. During operation, the inclined support plate 18 supports the spring telescopic rods 19. Due to their elasticity, the spring telescopic rods 19 are always pushed outwards by the arc-shaped locking plate 20, causing the arc-shaped locking plate 20 to press against the surface of the winding roller 4. When installing the lifting rope, the lifting rope also needs to be inserted between the surface of the winding roller 4 and the surface of the arc-shaped locking plate 20, causing the arc-shaped locking plate 20 to press against the surface of the lifting rope, thus limiting the lifting rope's movement. By setting the arc-shaped locking plate 20, the entire structure can move with the thickness of the winding lifting rope, while also pressing against the surface of the lifting rope to limit its movement, preventing significant deviation and ensuring stability after winding, further improving the stability after winding.

[0030] First, the support base 1 supports the gantry frame 2, which in turn supports the rotating shaft 3 and the reciprocating screw 10. During installation, the lifting rope must be wound downwards along the guide sleeve 6, then passed through the rope loop 7, and finally wound onto the take-up roller 4 via the rope loop 7. During take-up, due to the action of the auxiliary pulley assembly 11, the rotating shaft 3 and the reciprocating screw 10 rotate simultaneously. The rotation of the rotating shaft 3 drives the take-up roller 4 to rotate, thus winding the lifting rope. The rotation of the reciprocating screw 10 drives the reciprocating sliding sleeve 9 to reciprocate. After sliding, the reciprocating sliding sleeve 9, in conjunction with the connecting rod 8, drives the guide sleeve 6 to slide back and forth on the fixed sleeve 5, thereby driving the lifting rope in the rope loop 7 to move back and forth, thus achieving the function of reciprocating winding. The whole system is equipped with a reciprocating screw 10, which drives the reciprocating sliding sleeve 9 to move back and forth, thereby driving the lifting rope to move back and forth, so that it can be evenly wound on the winding roller 4, thus ensuring that the lifting rope is evenly stressed, reducing the risk of breakage, thus ensuring the service life of the lifting rope and reducing maintenance costs. Secondly, a motor cylinder 12 is supported on one side of the gantry frame 2. The motor cylinder 12 houses the motor 13 and protects the motor 13. After the motor 13 starts working, it drives the transmission shaft 14 to start rotating. At the same time, the transmission shaft 14 can rotate inside the fixed sleeve 5. In addition, the surface of the transmission shaft 14 is provided with multiple protruding structures, while the inside of the fixed sleeve 5 is provided with multiple concave structures that can be adapted to the transmission shaft 14. This can limit the transmission shaft 14 and prevent it from shaking during rotation. After the transmission shaft 14 rotates, it works with the drive pulley group 15 to drive the rotating shaft 3 to start rotating, thereby providing power for the winding operation. In addition, a placement cavity 16 is opened inside one side of the gantry frame 2 to place the driven pulley group. The limiting rod 17 is fixed inside the gantry frame 2, and the connecting rod 8 can slide on its surface. The limiting rod 17 is used to limit the connecting rod 8. Finally, the inclined support plate 18 supports the spring telescopic rod 19. Due to its elasticity, the spring telescopic rod 19 will always exert a force that pushes the arc-shaped locking plate 20 outward, thereby causing the arc-shaped locking plate 20 to abut against the surface of the take-up roller 4. When installing the lifting rope, the lifting rope also needs to be inserted between the surface of the take-up roller 4 and the surface of the arc-shaped locking plate 20, so that the arc-shaped locking plate 20 abuts against the surface of the lifting rope, thereby limiting the lifting rope. By setting the arc-shaped locking plate 20, the whole can move with the thickness of the winding lifting rope, and the whole can abut against the surface of the lifting rope to limit the lifting rope, prevent it from deviating too much, ensure the stability after winding, and further improve the stability after winding.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A drum structure for a gantry crane used for lifting hatch covers in a shipyard dry dock, characterized in that: Includes a support base (1); a gantry frame (2) is fixedly connected to the top of the support base (1); a rotating shaft (3) is rotatably connected to the top of the inner side of the gantry frame (2); a winding roller (4) is fixedly connected to the surface of the rotating shaft (3); a fixed sleeve (5) is fixedly connected to one side of the bottom inner side of the gantry frame (2); a guide sleeve (6) is slidably connected to the surface of the fixed sleeve (5); a rope loop (7) is fixedly connected to one side of the guide sleeve (6); the guide sleeve (6) is located at the rope loop (7). A connecting rod (8) is fixedly connected to one side of the surface of the guide sleeve (6). A reciprocating sliding sleeve (9) is fixedly connected to the surface of the guide sleeve (6) through the connecting rod (8). A reciprocating screw (10) is threadedly connected to the inner wall of the reciprocating sliding sleeve (9). Both ends of the reciprocating screw (10) are rotatably connected to the inner wall of the gantry frame (2). An auxiliary pulley group (11) is fixedly connected to one end of the rotating shaft (3). One end of the rotating shaft (3) is fixedly connected to one end of the reciprocating screw (10) through the auxiliary pulley group (11).

2. The drum structure of a gantry crane for lifting hatch covers in a shipyard dry dock according to claim 1, characterized in that: A motor cylinder (12) is fixedly connected to the bottom of one side of the gantry frame (2). An electric motor (13) is fixedly connected inside the motor cylinder (12). The output shaft of the electric motor (13) is fixedly connected to a transmission shaft (14) through a coupling. One end of the transmission shaft (14) is fixedly connected to a drive pulley group (15). One end of the transmission shaft (14) is fixedly connected to one end of the rotating shaft (3) through the drive pulley group (15).

3. The drum structure of a gantry crane for lifting hatch covers in a shipyard dry dock according to claim 2, characterized in that: One end of the drive shaft (14) passes through the gantry (2) and the fixed sleeve (5) and extends to the side of the gantry (2) away from the motor cylinder (12). The end of the drive shaft (14) located on the side of the gantry (2) away from the motor cylinder (12) is fixedly connected to one side of the drive pulley assembly (15).

4. The drum structure of a gantry crane for lifting hatch covers in a shipyard dry dock according to claim 1, characterized in that: The gantry (2) has a placement cavity (16) on one side. The auxiliary pulley group (11) is located inside the placement cavity (16). One end of the rotating shaft (3) and the reciprocating screw (10) both pass through the gantry (2) and extend into the placement cavity (16). The ends of the rotating shaft (3) and the reciprocating screw (10) located inside the placement cavity (16) are respectively fixedly connected to one side of the auxiliary pulley group (11).

5. The drum structure of a gantry crane for lifting hatch covers in a shipyard dry dock according to claim 1, characterized in that: The end of the rotating shaft (3) away from the auxiliary pulley group (11) passes through the gantry (2) and extends to the side of the gantry (2) away from the motor cylinder (12). The end of the rotating shaft (3) on the side of the gantry (2) away from the motor cylinder (12) is fixedly connected to the side of the active pulley group (15). A limit rod (17) is fixedly connected between the inner sides of the gantry (2) and below the winding roller (4). The inner side of the connecting rod (8) is slidably connected to the surface of the limit rod (17).

6. The drum structure of a gantry crane for lifting hatch covers in a shipyard dry dock according to claim 1, characterized in that: An inclined support plate (18) is fixedly connected between the inner sides of the gantry frame (2). Multiple equidistant spring telescopic rods (19) are fixedly connected to the surface of the inclined support plate (18). An arc-shaped locking plate (20) is fixedly connected to the top of the multiple spring telescopic rods (19).

Images