Lifting appliance for loading and unloading cast pipes at port

Abstract

A lifting appliance for loading and unloading cast pipes at a port belongs to the technical field of port hoisting equipment and is used for loading and unloading the cast pipes at the port. According to the technical scheme, a box is of a cuboid plate frame structure, connecting lifting lugs are arranged on the two sides of the upper end of the box respectively and connected with lifting hooks of a crane in a matched mode, a connecting beam is a rectangular plate frame, one end of the connecting beam is fixedly connected to the lower end of the box, and a lifting rod is welded to the upper surface of the other end of the connecting beam. The length direction of the suspender is perpendicular to the length direction of the connecting beam, the two ends of the suspender are respectively provided with a lifting lug ring, the two lifting lug rings are respectively matched with the two ends of the suspender in a rotating mode, the two lifting lug rings are respectively connected with cast pipe lifting hooks through chains and shackles, and the two cast pipe lifting hooks are lifted at the two ends of a cast pipe. The unhooking device is simple in structure and convenient to use, unhooking unmanned operation can be achieved when cast pipes are loaded and unloaded, operators are reduced, potential safety accidents are reduced, and loading and unloading operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a lifting device used for loading and unloading cast iron pipes in ports, belonging to the technical field of port lifting equipment. Technical Background

[0002] A large quantity of ductile iron pipes are handled at ports. Individual ductile iron pipes weigh several tons and are generally over 6 meters long. During loading and unloading, friction and collisions can easily damage the coating or deform the pipe body. Customers have extremely high requirements for transport quality, necessitating avoidance of mixing with chemicals and hazardous materials. Furthermore, 6.8-7 meters of space must be reserved per section in the ship's hold to accommodate the required pipe end clearance. In traditional loading and unloading operations, ductile iron pipes are handled by cranes and workers using hooks. Due to the large diameter and light weight of the pipes, the top layer of cargo on the loading truck is typically about 4.5 meters above the ground. Combined with the effects of winter frost, the unloading process is difficult, inefficient, and poses safety hazards, easily causing production stoppages. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a lifting device for loading and unloading cast iron pipes in ports. This lifting device can realize unmanned operation of unhooking and unhooking during the loading and unloading of cast iron pipes, reduce the number of operators, reduce the risk of safety accidents, and improve the efficiency of loading and unloading operations.

[0004] The technical solution to the above technical problem is:

[0005] A lifting device for loading and unloading cast iron pipes in a port includes a box body, connecting lugs, a connecting beam, a lifting rod, and lifting lugs. The box body is a rectangular plate frame structure. Connecting lugs are located on both sides of the upper end of the box body. The connecting lugs are connected to the hooks of a crane. The connecting beam is a rectangular plate frame structure. One end of the connecting beam is fixedly connected to the lower end of the box body. The other end of the connecting beam is welded to the upper surface of the lifting rod. The length direction of the lifting rod is perpendicular to the length direction of the connecting beam. Lifting lugs are installed at both ends of the lifting rod. The two lifting lugs are rotatably engaged with the two ends of the lifting rod. The two lifting lugs are connected to the cast iron pipe hooks through chains and shackles, respectively. The two cast iron pipe hooks are hoisted at both ends of the cast iron pipe.

[0006] The aforementioned lifting gear for loading and unloading cast iron pipes at the port has two connecting lugs on each side of the upper end of the box body. The two connecting lugs are parallel and opposite to each other on both sides of the box body.

[0007] The aforementioned lifting device for loading and unloading cast iron pipes at the port has a connecting beam composed of a top plate, a bottom plate, and a vertical plate. The top plate, bottom plate, and vertical plate are all rectangular plates. The top plate and bottom plate are parallel, and the vertical plate is welded vertically between the top plate and bottom plate to form an I-beam. The front ends of the connecting beam have support plates on both sides that are welded to the lower surface of the lifting rod.

[0008] The aforementioned lifting device for loading and unloading cast iron pipes at the port has a boom that is round. A set of positioning plates is welded to the upper surface of each end of the boom. Each set of positioning plates consists of two semi-circular plates placed in parallel with a gap between them. The upper ends of two lifting lugs are respectively embedded in the gap between the two semi-circular plates at both ends of the boom, and the two lifting lugs are in sliding fit with the inner side of the semi-circular plates on both sides.

[0009] The aforementioned lifting device for loading and unloading cast iron pipes at the port comprises a lifting lug consisting of a ring and a lifting plate. The inner diameter of the ring matches the diameter of the lifting rod. The ring is fitted onto the lifting rod, and the ring and the lifting rod are in a rotatable fit. The lower part of the ring is welded to the lifting plate, the surface of which is parallel to the length of the lifting rod. The center of the lifting plate has a circular hole that connects to the casting pipe hook.

[0010] The beneficial effects of this utility model are:

[0011] The housing of this utility model is a structure welded from four steel plates, which provides high safety. Two connecting lugs are located at the upper ends of the two side plates of the housing, connecting to the crane and ensuring connection stability. The connecting beam is an I-shaped structure welded from steel plates, with reinforced reinforcing plates in the middle to enhance strength and ensure the stability and safety of the mechanism. The lifting rod is a seamless tube, which, through its connection with the lifting lugs, expands the working length, thereby reducing the angle between the pipe hook and the pipe lifting device, further achieving automatic unhooking without the need for personnel to remove the hook. The lifting lugs can rotate circumferentially at both ends of the lifting rod, ensuring that the lifting rod is only subjected to vertical forces. The positioning plates at both ends of the lifting rod can restrict and position the circumferential rotation and axial movement of the lifting lugs.

[0012] This utility model has a simple structure and is easy to use. It can realize unmanned operation of unhooking when loading and unloading cast iron pipes, reduce operators, reduce safety hazards, and improve loading and unloading efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] The following are the markings in the diagram: 1. Box body, 2. Connecting lug, 3. Connecting beam, 4. Lifting rod, 5. Lifting lug ring, 6. Top plate, 7. Bottom plate, 8. Vertical plate, 9. Support plate, 10. Positioning plate, 11. Ring, 12. Lifting plate, 13. Circular hole. Detailed Implementation

[0015] This utility model consists of a box body 1, connecting lugs 2, connecting beams 3, lifting rods 4, lifting lugs 5, and positioning plates 10.

[0016] As shown in the figure, the box body 1 is a rectangular plate frame structure. There are two connecting lugs 2 on each side of the upper end of the box body 1. The two connecting lugs are parallel and opposite to each other on both sides of the box body 1. The connecting lugs 2 are connected to the hook of the crane. The structure of the box body 1 is adapted to the connection part of the crane and can be easily disassembled.

[0017] As shown in the diagram, connecting beam 3 is a rectangular plate frame. One end of connecting beam 3 is fixedly connected to the lower end of box body 1, and the other end of connecting beam 3 is welded to the upper surface of a lifting rod 4. Connecting beam 3 consists of a top plate 6, a bottom plate 7, a vertical plate 8, and a reinforcing rib plate 9. The top plate 6, bottom plate 7, and vertical plate 8 are all rectangular plates. The top plate 6 and bottom plate 7 are parallel, and the vertical plate 8 is vertically welded between the top plate 6 and bottom plate 7 to form an I-beam. The connecting beam is an I-beam, with a simple and stable structure. The reinforcing vertical plate 8 ensures a safety factor, and the connecting beam extends the crane's operating range, preventing cargo from affecting the operator.

[0018] As shown in the figure, the lifting rod 4 is a round rod, which is welded to the upper end of the connecting beam 3. The front ends of the connecting beam 3 have support plates 9 on both sides, which are welded to the lower surface of the lifting rod 4. The length direction of the lifting rod 4 is perpendicular to the length direction of the connecting beam 3. The lifting rod 4 is used to lift the cast pipe.

[0019] As shown in the diagram, lifting lugs 5 are installed at both ends of the boom 4. The two lifting lugs 5 are rotatably fitted to both ends of the boom 4, allowing the lifting lugs 5 to rotate circumferentially at both ends of the boom 4, ensuring that the boom 4 is only subjected to vertical force. Each lifting lug 5 consists of a ring 11 and a lifting plate 12. The inner diameter of the ring 11 matches the diameter of the boom 4. The ring 11 is fitted onto the boom 4, and the ring 11 and boom 4 are rotatably fitted. The lower part of the ring 11 is welded to the lifting plate 12. The surface of the lifting plate 12 is parallel to the length of the boom 4. The center of the surface of the lifting plate 12 has a circular hole 13, which is connected to the pipe hook via a shackle and chain. The lifting lugs 5 can rotate circumferentially at both ends of the boom 4 through the ring 11, ensuring that the boom 4 is only subjected to vertical force.

[0020] As shown in the figure, a set of positioning plates 10 are welded to the upper surfaces of both ends of the boom 4. Each positioning plate 10 consists of two semi-circular plates placed parallel to each other with a gap between them. The rings 11 at the upper ends of the two lifting lugs 5 are respectively embedded in the gaps between the two semi-circular plates at both ends of the boom 4. The two sides of the rings 11 of the two lifting lugs 5 are in sliding fit with the inner sides of the semi-circular plates. The positioning plates 10 at both ends of the boom 4 can restrict and position the circumferential rotation and axial movement of the lifting lugs 5.

[0021] The usage process of this utility model is as follows:

[0022] In use, the pipe casting lifting tool is connected to the crane via the connecting lugs, and then the lugs are connected to the pipe casting hook via shackles and chains. The pipe casting can then be operated. In the unhooking process, compared with the original lifting tool, the pipe casting lifting tool has a lifting rod structure, which increases the working length and reduces the angle between the pipe casting hook and the lifting rod, thus enabling the unhooking operation to be completed without workers.

[0023] An embodiment of this utility model is as follows:

[0024] The length of box 1 is 470mm, the width is 250mm, and the height is 470mm;

[0025] The outer diameter of the connecting lug 2 is 150mm, and the inner diameter is 50mm;

[0026] The length of connecting beam 3 is 1580mm, the width is 250mm, and the height is 250mm;

[0027] The diameter of the boom 4 is 120mm and the length is 2680mm;

[0028] The outer diameter of the ring 11 of the hanging ear 5 is 210mm, the inner diameter is 130mm, and the thickness is 30mm. The length of the hanging plate 12 is 160mm, the width is 120mm, the thickness is 30mm, and the diameter of the round hole 13 is 40mm.

[0029] The thickness of the semi-circular plate of the positioning plate 10 is 20mm, and the diameter of the semi-circle is 210mm.

Claims

1. A lifting device for loading and unloading cast iron pipes at a port, characterized in that: It includes a box body (1), connecting lugs (2), connecting beam (3), lifting rod (4), and lifting lugs (5). The box body (1) is a rectangular plate frame structure. There are connecting lugs (2) on both sides of the upper end of the box body (1). The connecting lugs (2) are connected to the hook of the crane. The connecting beam (3) is a rectangular plate frame. One end of the connecting beam (3) is fixedly connected to the lower end of the box body (1). The other end of the connecting beam (3) is welded to the upper surface of the upper end of the connecting beam (3). The length direction of the lifting rod (4) is perpendicular to the length direction of the connecting beam (3). Lifting lugs (5) are installed at both ends of the lifting rod (4). The two lifting lugs (5) are rotated to fit the two ends of the lifting rod (4).

2. The lifting device for loading and unloading cast iron pipes at a port according to claim 1, characterized in that: The box body (1) has two connecting lugs (2) on each side of the upper end. The two connecting lugs (2) are parallel and opposite to each other on both sides of the box body (1).

3. The lifting device for loading and unloading cast iron pipes at a port according to claim 1, characterized in that: The connecting beam (3) consists of a top plate (6), a bottom plate (7) and a vertical plate (8). The top plate (6), bottom plate (7) and vertical plate (8) are rectangular plates. The top plate (6) and bottom plate (7) are parallel. The vertical plate (8) is vertically welded between the top plate (6) and bottom plate (7) to form an I-beam. The front ends of the connecting beam (3) are respectively supported by a support plate (9) and vertically welded to the lower surface of the hanger (4).

4. The lifting device for loading and unloading cast iron pipes at a port according to claim 1, characterized in that: The lifting rod (4) is a round rod. A set of positioning plates (10) are welded to the upper surfaces of both ends of the lifting rod (4). The set of positioning plates (10) consists of two semi-circular plates. The two semi-circular plates are placed in parallel and there is a gap between the two semi-circular plates. The upper ends of the two lifting lugs (5) are respectively embedded in the gap between the two semi-circular plates at both ends of the lifting rod (4). The two lifting lugs (5) are in sliding fit with the inner side of the semi-circular plates on both sides.

5. The lifting device for loading and unloading cast iron pipes at a port according to claim 1, characterized in that: The lifting lug (5) consists of a ring (11) and a hanging plate (12). The inner diameter of the ring (11) matches the diameter of the hanging rod (4). The ring (11) is fitted onto the hanging rod (4). The ring (11) and the hanging rod (4) are in a rotating fit. The hanging plate (12) is welded to the lower part of the ring (11). The plate surface of the hanging plate (12) is parallel to the length direction of the hanging rod (4). There is a circular hole (13) in the center of the plate surface of the hanging plate (12).

Images