Lifting assembly for container portal crane

Abstract

The utility model discloses a lifting assembly for a container portal crane, which comprises a support plate arranged below a lower mounting frame, and a first linkage rod and a second linkage rod are arranged between an upper mounting frame and the lower mounting frame; the connecting rods are arranged in the two ends of the upper mounting frame and the two ends of the lower mounting frame, connecting bases are arranged in one ends of the upper mounting frame and the lower mounting frame, the connecting bases are rotationally connected with the two ends of the connecting rods, and U-shaped connecting plates are arranged in the other ends of the upper mounting frame and the lower mounting frame; the lifting assembly is directly arranged at the bottom of the portal crane, the connecting rod is driven by the motor to move along the U-shaped connecting plate, then the first linkage rod and the second linkage rod are driven to rotate synchronously, and the lower mounting frame is driven to ascend and descend. And the portal crane can be lifted by falling the supporting plate to be in contact with the ground.

Description

Technical Field

[0001] The utility model relates to the technical field of gantry cranes, in particular to a lifting assembly for a container gantry crane. Background Technique

[0002] A container, also known as a cargo box, is a component tool that can load packaged or unpackaged goods for transportation and is convenient for loading and unloading with mechanical equipment. A gantry crane, also called a gantry hoist, is a deformation of a bridge crane. The metal structure of the gantry crane is like a portal frame. Two supporting legs are installed under the load-bearing main beam, and it can walk directly on the ground track. The two ends of the main beam can have outstretched cantilever beams, which have the characteristics of high site utilization rate, large operation range, wide adaptability, strong versatility, etc. It is mainly used for the loading and unloading operations of outdoor freight yards, material yards, and bulk goods.

[0003] The existing gantry crane walks along the track on the ground, and there is no lifting structure at the bottom of the gantry crane. When repairing the bottom of the gantry crane, it cannot be lifted, and external equipment needs to be used to assist the operation, which improves the use effect of the gantry crane but cannot meet the use requirements. Content of the Utility Model

[0004] The purpose of the utility model is to provide a lifting assembly for a container gantry crane to solve the problem raised in the above background technique that the existing gantry crane walks along the track on the ground, there is no lifting structure at the bottom of the gantry crane, it cannot be lifted when repairing the bottom of the gantry crane, external equipment needs to be used to assist the operation, which improves the use effect of the gantry crane but cannot meet the use requirements.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A lifting assembly for a container gantry crane, including an upper mounting frame and a lower mounting frame, and further including:

[0006] A support plate, which is arranged below the lower mounting frame and is welded to the lower mounting frame. A first linkage rod and a second linkage rod are arranged between the upper mounting frame and the lower mounting frame. There are two first linkage rods and two second linkage rods, and the first linkage rod and the second linkage rod are arranged crosswise and obliquely. A shaft pin is arranged between the first linkage rod and the second linkage rod, and the first linkage rod and the second linkage rod are rotationally connected through the shaft pin;

[0007] The connecting rod is arranged inside both ends of the upper mounting frame and the lower mounting frame. The two ends of the connecting rod are fixedly connected to the first linkage rod and the second linkage rod. Inside one end of the upper mounting frame and the lower mounting frame, there is a connecting seat which is fixedly connected to the upper mounting frame and the lower mounting frame. The connecting seat is rotatably connected to the two ends of the connecting rod. Inside the other end of the upper mounting frame and the lower mounting frame, there is a U-shaped connecting plate which is fixedly connected to the upper mounting frame and the lower mounting frame. Inside the U-shaped connecting plate, there is a roller which is fixedly connected to the U-shaped connecting plate. The roller is fixedly connected to the two ends of the connecting rod.

[0008] Preferably, a servo motor is arranged below the upper mounting frame, and the servo motor is connected to the upper mounting frame by screws. Outside the center of the connecting rod, there is a connecting block which is connected to the connecting rod by screws. Between the servo motor and the connecting block, there is a ball screw. One end of the ball screw is connected to the output end of the servo motor. The ball screw penetrates through the connecting block and is threadedly connected to the connecting block.

[0009] Preferably, the support plate includes a metal plate and a rubber plate. The rubber plate is arranged below the metal plate and is in contact with the metal plate.

[0010] Preferably, at least six jacks are arranged at the lower end of the metal plate. At the upper end of the rubber plate, there are insertion blocks which are fixedly connected to the rubber plate. The insertion blocks are arranged corresponding to the jacks and are inserted into the metal plate.

[0011] Preferably, two connecting plates are arranged on both sides of the upper mounting frame. The two connecting plates are fixedly connected to the upper mounting frame. On both of the two connecting plates, there are connecting bolts which penetrate through the connecting plates.

[0012] Preferably, at least two reinforcing plates are arranged inside the upper mounting frame and the lower mounting frame, and the reinforcing plates are welded to the upper mounting frame and the lower mounting frame.

[0013] Preferably, a fork-shaped connecting frame is arranged between the two first linkage rods, and the fork-shaped connecting frame is fixedly connected to the first linkage rods.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] 1. Through the settings of the first linkage rod, the second linkage rod, the connecting rod, the U-shaped connecting plate, the support plate, the servo motor, the connecting block and the ball screw, the first linkage rod and the second linkage rod are rotationally connected to form a lifting mechanism. The servo motor drives the ball screw to rotate. The ball screw is threadedly connected to the connecting block. As the ball screw rotates, it drives the connecting rod to move along the U-shaped connecting plate. The moving connecting rod drives the first linkage rod and the second linkage rod to rotate synchronously. The first linkage rod and the second linkage rod form a lifting mechanism. As the first linkage rod and the second linkage rod rotate, the lower installation frame is driven to lift. When the support plate falls and contacts the ground, the gantry crane can be lifted up;

[0016] 2. Through the settings of the rubber plate, the insertion block and the insertion hole, the rubber plate deforms correspondingly when it contacts the ground, and it can be effectively supported on the uneven ground. The insertion block is aligned with the insertion hole and inserted to connect the rubber plate to the metal plate, which is convenient for removing and replacing the worn rubber plate later;

[0017] 3. Through the setting of the fork-shaped connecting frame, the fork-shaped connecting frame increases the structural strength of the linkage rod, effectively prevents the linkage rod structure from bending when the lifting component is stressed, and improves the service life of the lifting component. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a suitable overall structure diagram of the present utility model;

[0019] Figure 2 It is a bottom view structure diagram of the present utility model;

[0020] Figure 3 For the present utility model Figure 2 Partial enlarged view of Area A;

[0021] Figure 4 It is a cross-sectional view of the support plate of the present utility model.

[0022] In the figure: 1, upper installation frame; 2, reinforcing plate; 3, connecting plate; 4, connecting bolt; 5, support plate; 6, lower installation frame; 7, first linkage rod; 8, second linkage rod; 9, connecting rod; 10, connecting seat; 11, pin; 12, U-shaped connecting plate; 13, fork-shaped connecting frame; 14, servo motor; 15, connecting block; 16, ball screw; 17, roller; 18, metal plate; 19, rubber plate; 20, insertion block; 21, insertion hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0024] Please refer toFigures 1-4 , an embodiment provided by the present utility model: a lifting assembly for a container gantry crane, including an upper mounting frame 1 and a lower mounting frame 6, further including:

[0025] A support plate 5, which is arranged below the lower mounting frame 6, and the support plate 5 is welded to the lower mounting frame 6. A first linkage rod 7 and a second linkage rod 8 are arranged between the upper mounting frame 1 and the lower mounting frame 6. There are two first linkage rods 7 and two second linkage rods 8, and the first linkage rod 7 and the second linkage rod 8 are arranged crosswise and obliquely. A shaft pin 11 is arranged between the first linkage rod 7 and the second linkage rod 8, and the first linkage rod 7 and the second linkage rod 8 are rotatably connected through the shaft pin 11;

[0026] A connecting rod 9, which is arranged inside the two ends of the upper mounting frame 1 and the lower mounting frame 6. The connecting rod 9 is fixedly connected to the two ends of the first linkage rod 7 and the second linkage rod 8. A connecting seat 10 is arranged inside one end of the upper mounting frame 1 and the lower mounting frame 6, and the connecting seat 10 is fixedly connected to the upper mounting frame 1 and the lower mounting frame 6. The connecting seat 10 is rotatably connected to the two ends of the connecting rod 9. A U-shaped connecting plate 12 is arranged inside the other end of the upper mounting frame 1 and the lower mounting frame 6, and the U-shaped connecting plate 12 is fixedly connected to the upper mounting frame 1 and the lower mounting frame 6. A roller 17 is arranged inside the U-shaped connecting plate 12, and the roller 17 is fixedly connected to the U-shaped connecting plate 12. The roller 17 is fixedly connected to the two ends of the connecting rod 9.

[0027] Please refer to Figure 1 and Figure 2 , a servo motor 14 is arranged below the upper mounting frame 1, and the servo motor 14 is connected to the upper mounting frame 1 by screws. A connecting block 15 is arranged outside the center of the connecting rod 9, and the connecting block 15 is connected to the connecting rod 9 by screws. A ball screw 16 is arranged between the servo motor 14 and the connecting block 15. One end of the ball screw 16 is connected to the output end of the servo motor 14. The ball screw 16 is arranged through the connecting block 15, and the ball screw 16 is threadedly connected to the connecting block 15. By driving the ball screw 16 to rotate by the servo motor 14, and the ball screw 16 is threadedly connected to the connecting block 15. As the ball screw 16 rotates, it drives the connecting rod 9 to move along the U-shaped connecting plate 12. The moving connecting rod 9 drives the first linkage rod 7 and the second linkage rod 8 to rotate synchronously, and then drives the lower mounting frame 6 to lift. Lowering the support plate 5 to contact the ground can lift the gantry crane.

[0028] Please refer to Figure 1 and Figure 4 , the support plate 5 includes a metal plate 18 and a rubber plate 19. The rubber plate 19 is arranged below the metal plate 18, and the rubber plate 19 is attached to the metal plate 18. The rubber plate 19 enables the support structure to have a buffering effect.

[0029] Please refer to Figure 4 , at the lower end of the metal plate 18, there are insertion holes 21, and there are at least six insertion holes 21. At the upper end of the rubber plate 19, there are insertion blocks 20. The insertion blocks 20 are fixedly connected to the rubber plate 19. The insertion blocks 20 are arranged corresponding to the insertion holes 21, and the insertion blocks 20 are inserted into the metal plate 18. The insertion blocks 20 are aligned with the insertion holes 21 and inserted, connecting the rubber plate 19 to the metal plate 18, which is convenient for subsequently removing and replacing the worn rubber plate 19.

[0030] Please refer to Figure 1 , on both sides of the upper mounting frame 1, there are connecting plates 3. There are two connecting plates 3, and the connecting plates 3 are fixedly connected to the upper mounting frame 1. On both connecting plates 3, there are connecting bolts 4, and the connecting bolts 4 penetrate through the connecting plates 3. The connecting plates 3 are connected to the bottom of the crane through the connecting bolts 4, and then the lifting assembly is installed on the crane.

[0031] Please refer to Figure 1 and Figure 2 , on the inner sides of the upper mounting frame 1 and the lower mounting frame 6, there are reinforcing plates 2. There are at least two reinforcing plates 2, and the reinforcing plates 2 are welded to the upper mounting frame 1 and the lower mounting frame 6. The structural strength of the upper mounting frame 1 and the lower mounting frame 6 is increased through the reinforcing plates 2, and they can bear a greater load.

[0032] Please refer to Figure 1 and Figure 2 , between the two first linkage rods 7, there is a fork-shaped connecting frame 13, and the fork-shaped connecting frame 13 is fixedly connected to the first linkage rod 7. The structural strength of the linkage rod is improved through the fork-shaped connecting frame 13, effectively preventing the linkage rod structure from bending when the lifting assembly is stressed.

[0033] Working principle: Use the connecting bolts 4 to connect the connecting plates 3 to the bottom of the crane, and then install the lifting assembly on the crane. The servo motor 14 drives the ball screw 16 to rotate. The ball screw 16 is threadedly connected to the connecting block 15. As the ball screw 16 rotates, it drives the connecting rod 9 to move along the U-shaped connecting plate 12. The moving connecting rod 9 drives the first linkage rod 7 and the second linkage rod 8 to rotate synchronously. The first linkage rod 7 and the second linkage rod 8 form a lifting mechanism. As the first linkage rod 7 and the second linkage rod 8 rotate, they drive the lower mounting frame 6 to lift, and the support plate 5 is lowered to contact the ground to lift the gantry crane; the insertion blocks 20 are aligned with the insertion holes 21 and inserted, connecting the rubber plate 19 to the metal plate 18, which is convenient for subsequently removing and replacing the worn rubber plate 19.

[0034] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0035] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A lifting assembly for a container gantry crane, comprising an upper mounting frame (1) and a lower mounting frame (6), characterized in that: Also includes: A support plate (5) is arranged below the lower mounting frame (6), and the support plate (5) is welded to the lower mounting frame (6); a first linkage rod (7) and a second linkage rod (8) are arranged between the upper mounting frame (1) and the lower mounting frame (6); two first linkage rods (7) and two second linkage rods (8) are provided, and the first linkage rod (7) and the second linkage rod (8) are arranged crosswise and obliquely; an axle pin (11) is provided between the first linkage rod (7) and the second linkage rod (8), and the first linkage rod (7) and the second linkage rod (8) are rotatably connected via the axle pin (11); A connecting rod (9) is arranged inside the two ends of the upper mounting frame (1) and the lower mounting frame (6), and the connecting rod (9) is fixedly connected to the two ends of the first linkage rod (7) and the second linkage rod (8). A connecting seat (10) is arranged inside one end of the upper mounting frame (1) and the lower mounting frame (6), and the connecting seat (10) is fixedly connected to the upper mounting frame (1) and the lower mounting frame (6). The connecting seat (10) is rotatably connected to the two ends of the connecting rod (9). A U-shaped connecting plate (12) is arranged inside the other end of the upper mounting frame (1) and the lower mounting frame (6), and the U-shaped connecting plate (12) is fixedly connected to the upper mounting frame (1) and the lower mounting frame (6). A roller (17) is arranged inside the U-shaped connecting plate (12), and the roller (17) is fixedly connected to the U-shaped connecting plate (12). The roller (17) is fixedly connected to the two ends of the connecting rod (9).

2. A lifting assembly for a container gantry crane according to claim 1, characterized in that: A servo motor (14) is arranged below the upper mounting frame (1), and the servo motor (14) is connected to the upper mounting frame (1) by screws. A connecting block (15) is arranged outside the center of the connecting rod (9), and the connecting block (15) is connected to the connecting rod (9) by screws. A ball screw (16) is arranged between the servo motor (14) and the connecting block (15), and one end of the ball screw (16) is connected to the output end of the servo motor (14). The ball screw (16) and the connecting block (15) are arranged in a through manner, and the ball screw (16) and the connecting block (15) are threadedly connected.

3. A lifting assembly for a container gantry crane according to claim 1, characterized in that: The support plate (5) comprises a metal plate (18) and a rubber plate (19); the rubber plate (19) is arranged below the metal plate (18), and the rubber plate (19) is in contact with the metal plate (18).

4. A lifting assembly for a container gantry crane according to claim 3, characterized in that: The lower end of the metal plate (18) is provided with a plug hole (21), and at least six plug holes (21) are provided. The upper end of the rubber plate (19) is provided with an insert block (20), and the insert block (20) is fixedly connected to the rubber plate (19). The insert block (20) and the plug hole (21) are arranged correspondingly, and the insert block (20) is plugged into the metal plate (18).

5. The lifting assembly for a container gantry crane according to claim 1, characterized in that: Connecting plates (3) are provided on both sides of the upper mounting frame (1), two connecting plates (3) are provided, and the connecting plates (3) are fixedly connected to the upper mounting frame (1), and connecting bolts (4) are provided on the two connecting plates (3), and the connecting bolts (4) and the connecting plates (3) are connected.

6. The lifting assembly for a container gantry crane according to claim 1, characterized in that: The inner sides of the upper mounting frame (1) and the lower mounting frame (6) are both provided with reinforcing plates (2), at least two reinforcing plates (2) are provided, and the reinforcing plates (2) are welded to the upper mounting frame (1) and the lower mounting frame (6).

7. The lifting assembly for a container gantry crane according to claim 1, characterized in that: A fork-shaped connecting frame (13) is provided between the two first linking rods (7), and the fork-shaped connecting frame (13) is fixedly connected to the first linking rods (7).

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