Lifting appliance for lifting large steel ingot

Abstract

The utility model discloses a lifting appliance for lifting a large steel ingot, which belongs to the technical field of lifting appliance instruments, and comprises two travelling cranes, a balancing device, a connecting device, a clamping device and an unlocking device, the balancing device is arranged on the lower sides of the two travelling cranes, the connecting device is arranged on the middle side of the balancing device, and the clamping device is arranged on the lower side of the connecting device. The clamping device is installed on the lower side of the connecting device, the unlocking device is installed on the middle side of the balancing device, the clamping device comprises a transverse plate, a connecting base, a first rotating frame, a second rotating frame, a third rotating frame and a fourth rotating frame, and the transverse plate is installed on the lower side of the connecting device; the two connecting bases are fixedly installed on the left side and the right side of the upper portion of the transverse plate correspondingly, and the first rotating frame is rotationally connected to the front side of the lower portion of the transverse plate through a rotating shaft. By means of the mode, the steel ingot clamping device can rapidly clamp a steel ingot in a self-locking mode while moving upwards, clamping in multiple directions can be conducted, and the clamping balance state can be monitored.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, specifically a lifting tool for lifting large steel ingots. Background Technology

[0002] A steel ingot is a block-shaped steel billet formed by pouring molten steel from a steelmaking furnace into a specific mold and allowing it to solidify. Large steel ingots are also quite large in size; for example, the diameter of a round steel ingot can reach 3-5 meters. These large steel ingots are mainly used to manufacture large industrial components, such as crankshafts for large ships and turbine runners. When transporting large steel ingots, they need to be stably clamped before they can be moved. Steel ingot lifting devices are tools used to lift steel ingots. The principle is to grasp the steel ingot through the clamping force of a mechanical structure. It usually has one or more jaws, and uses the lever principle, screw mechanism, or eccentric wheel to make the jaws hold the steel ingot tightly when closed.

[0003] Chinese patent CN210655793U discloses a dual-machine lifting device, comprising a lifting beam connected to a pulley box via steel cables, a sleeve welded to the lower end of the pulley box, and a single-door pulley connected to the pulley box via a rotating shaft; the steel cables are sleeved on the single-door pulley and pass through the sleeve; the lifting beam has a first lifting hole, a second lifting hole, and a third lifting hole, and three lifting holes on the upper part of the lifting beam (left, middle, and right); a triangular support block is welded to the lifting beam; the steel cables are connected to a hook via buckles; the hook is connected to a baffle via a rotating shaft; the hook tip of the baffle makes hard contact with the hook tip; and an anti-slip pad is attached to the tail end of the hook.

[0004] However, the technical solution of this patent has the following problems:

[0005] This patent cannot quickly self-lock and clamp the steel ingot during the lifting process, nor can it monitor the balance of the clamping.

[0006] Therefore, those skilled in the art have provided a lifting tool for lifting large steel ingots to solve the above problems. Utility Model Content

[0007] The purpose of this utility model is to provide a lifting tool for lifting large steel ingots to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A lifting device for lifting large steel ingots includes two overhead cranes, a balancing device, a connecting device, a clamping device, and an unlocking device. The balancing device is located on the underside of the two overhead cranes. The connecting device is installed in the middle of the balancing device. The clamping device is installed below the connecting device. The unlocking device is installed in the middle of the balancing device. The clamping device includes a horizontal plate, a connecting base, a first rotating frame, a second rotating frame, a third rotating frame, and a fourth rotating frame. The horizontal plate is installed below the connecting device. The two connecting bases are fixedly installed on the left and right sides above the horizontal plate, respectively. The first rotating frame is rotatably connected to the front side below the horizontal plate via a rotating shaft. The second rotating frame is rotatably connected to the rear side below the horizontal plate via a rotating shaft. The upper side of the third rotating frame is rotatably connected to the end of the first rotating frame away from the horizontal plate via a rotating shaft. The upper side of the fourth rotating frame is rotatably connected to the end of the second rotating frame away from the horizontal plate via a rotating shaft. The middle sides of the third and fourth rotating frames are rotatably connected via a rotating shaft.

[0010] Furthermore, the clamping device also includes a heat insulation block, wherein heat insulation blocks are fixedly installed on the lower side of both the third rotating frame and the fourth rotating frame to insulate the heat of the steel ingot;

[0011] Furthermore, the balancing device includes: a connecting bracket and a transverse support plate, wherein the connecting bracket is hung on the lower side of the vehicle output end, and the transverse support plate is fixedly installed on the lower side of the connecting bracket;

[0012] Furthermore, the balancing device also includes: level sensors, two of which are symmetrically fixedly installed on the left and right sides of the transverse support plate along the central axis of the transverse support plate.

[0013] Furthermore, the balancing device also includes an audible and visual alarm, with an audible and visual alarm fixedly installed on the front side wall of each of the connecting brackets;

[0014] Furthermore, the connecting device includes: a support base, four support bases arranged in a circular array around the center point of the lower side of the horizontal support plate, the support bases being fixedly installed on the lower side of the horizontal support plate, and the support bases having multiple openings.

[0015] Furthermore, the connecting device also includes: a first chain, one end of which is rotatably connected to the opening, and the other end of which is rotatably connected to the upper side of the connecting base;

[0016] Furthermore, the unlocking device includes: an electric winch and a second chain. The electric winch is fixedly installed in the middle of the transverse support plate. The upper sides of the two second chains are both hooked to the output end of the electric winch. The lower side of one of the second chains is rotatably connected to the rear side of the third rotating frame via a rotating shaft, and the lower side of the other second chain is rotatably connected to the front side of the fourth rotating frame via a rotating shaft.

[0017] Furthermore, the level sensor, audible and visual alarm, and electric winch are all electrically connected to an external controller.

[0018] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses the starting of the crane to drive the balancing device to move upward, the upward movement of the balancing device to drive the clamping device to move upward, the upward movement of the connecting base of the clamping device to drive the horizontal plate to move upward, and the upward movement of the horizontal plate to drive the first rotating frame, the second rotating frame, the third rotating frame and the fourth rotating frame to move upward. The first rotating frame, the second rotating frame, the third rotating frame and the fourth rotating frame form a parallelogram. The parallelogram has instability. The first rotating frame and the second rotating frame rotate under the action of gravity and move closer to each other, so that the third rotating frame and the fourth rotating frame rotate and move closer to each other, clamping the steel ingot. This is beneficial for moving upward while quickly self-locking and clamping the steel ingot.

[0019] 2. A level sensor is used to detect whether the transverse support plate of the balancing device is level. If the two cranes are not raised synchronously, the transverse support plate will tilt. The level sensor will detect this and transmit an electrical signal to the external controller. The external controller receives the electrical signal from the level sensor and compares it with the preset tilt data to control whether the audible and visual alarm is activated, which is beneficial for detecting the level of the equipment. The electric winch starts and drives the second chain to move upward. The upward movement of the second chain drives the rear side of the third rotating frame and the front side of the fourth rotating frame to move upward and rotate simultaneously, so that the third and fourth rotating frames release the steel ingot, which is beneficial for quickly releasing the steel ingot. The first chain is installed on the left and right support bases on the lower side of the transverse support plate. At this time, the clamping device can perform lateral gripping. The first chain is installed on the front and rear support bases on the lower side of the transverse support plate. At this time, the clamping device can perform longitudinal gripping, which is beneficial for clamping in multiple directions. Attached Figure Description

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is the front view of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the present invention without the crane. Figure 1 ;

[0023] Figure 4 This is a schematic diagram of the structure of the present invention without the crane. Figure 2 ;

[0024] Figure 5 This is a schematic diagram of the structure of the present invention without the crane. Figure 3 .

[0025] In the diagram: 1. Crane; 2. Balancing device; 21. Connecting bracket; 22. Horizontal support plate; 23. Horizontal sensor; 24. Audible and visual alarm; 3. Connecting device; 31. Support base; 32. Opening; 33. First chain; 4. Clamping device; 41. Horizontal plate; 42. Connecting base; 43. First rotating frame; 44. Second rotating frame; 45. Third rotating frame; 46. Fourth rotating frame; 47. Heat insulation block; 5. Unlocking device; 51. Electric winch; 52. Second chain. Detailed Implementation

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0028] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-5A lifting device for lifting large steel ingots includes two overhead cranes 1, a balancing device 2, a connecting device 3, a clamping device 4, and an unlocking device 5. The balancing device 2 is located under the two overhead cranes 1. The connecting device 3 is installed in the middle of the balancing device 2. The clamping device 4 is installed below the connecting device 3. The unlocking device 5 is installed in the middle of the balancing device 2. The clamping device 4 includes a horizontal plate 41, a connecting base 42, a first rotating frame 43, a second rotating frame 44, a third rotating frame 45, and a fourth rotating frame 46. The horizontal plate 41 is installed on the connecting device 3. On the lower side, the two connecting bases 42 are respectively fixedly installed on the left and right sides above the horizontal plate 41. The first rotating frame 43 is rotatably connected to the front side below the horizontal plate 41 via a rotating shaft. The second rotating frame 44 is rotatably connected to the rear side below the horizontal plate 41 via a rotating shaft. The upper side of the third rotating frame 45 is rotatably connected to the end of the first rotating frame 43 away from the horizontal plate 41 via a rotating shaft. The upper side of the fourth rotating frame 46 is rotatably connected to the end of the second rotating frame 44 away from the horizontal plate 41 via a rotating shaft. The middle sides of the third rotating frame 45 and the fourth rotating frame 46 are rotatably connected via a rotating shaft.

[0029] The balancing device 2 is used to maintain the balance of the equipment during lifting. The connecting device 3 is used to connect the balancing device 2 and the clamping device 4, so that the clamping device 4 can maintain a balanced state when clamping the steel ingot. The unlocking device 5 is used to unlock the clamping device 4, so that the clamping device 4 can release the clamping state and put the steel ingot down.

[0030] When the crane 1 starts, it causes the balancing device 2 to move upward. The upward movement of the balancing device 2 causes the clamping device 4 to move upward. The connecting base 42 of the clamping device 4 moves upward, causing the horizontal plate 41 to move upward. The upward movement of the horizontal plate 41 causes the first rotating frame 43, the second rotating frame 44, the third rotating frame 45, and the fourth rotating frame 46 to all move upward. The first rotating frame 43, the second rotating frame 44, the third rotating frame 45, and the fourth rotating frame 46 form a parallelogram. The parallelogram has instability. The first rotating frame 43 and the second rotating frame 44 rotate under the action of gravity and move closer to each other, causing the third rotating frame 45 and the fourth rotating frame 46 to rotate and move closer to each other, clamping the steel ingot. This facilitates upward movement while quickly and self-locking the steel ingot.

[0031] Example 2: In some embodiments, such as Figures 1-5 In a preferred embodiment of the present invention, the clamping device 4 further includes a heat insulation block 47. The heat insulation block 47 is fixedly installed on the lower side of both the third rotating frame 45 and the fourth rotating frame 46 to isolate the heat of the steel ingot.

[0032] The balancing device 2 includes a connecting bracket 21 and a transverse support plate 22. The connecting bracket 21 is attached to the lower side of the output end of the crane 1, and the transverse support plate 22 is fixedly installed on the lower side of the connecting bracket 21.

[0033] The balancing device 2 further includes: a horizontal sensor 23, and two horizontal sensors 23 are symmetrically fixedly installed on the left and right sides of the horizontal support plate 22 along the central axis of the horizontal support plate 22.

[0034] The level sensor 23 is used to detect whether the transverse support plate 22 of the balancing device 2 is in a horizontal state. If the two cranes 1 are not raised synchronously, the transverse support plate 22 will tilt to a certain extent. At this time, the level sensor 23 will detect it and transmit the electrical signal to the external controller, which is beneficial to detect the level state of the equipment.

[0035] The balancing device 2 also includes an audible and visual alarm 24, and an audible and visual alarm 24 is fixedly installed on the front side wall of each of the connecting brackets 21.

[0036] The external controller receives the electrical signal from the level sensor 23 and compares it with the preset tilt data to control whether the audible and visual alarm 24 is activated.

[0037] The connecting device 3 includes: a support base 31, four support bases 31 are arranged in a circular array with the center point of the lower side of the horizontal support plate 22 as the center, the support bases 31 are fixedly installed on the lower side of the horizontal support plate 22, and a plurality of openings 32 are provided on the support bases 31.

[0038] The connecting device 3 further includes: a first chain 33, one end of which is rotatably connected to the opening 32, and the other end of which is rotatably connected to the upper side of the connecting base 42.

[0039] The first chain 33 is installed on the left and right support bases 31 on the lower side of the horizontal support plate 22. At this time, the clamping device 4 can perform horizontal gripping. The first chain 33 is installed on the front and rear support bases 31 on the lower side of the horizontal support plate 22. At this time, the clamping device 4 can perform vertical gripping, which is beneficial for clamping in multiple directions.

[0040] The unlocking device 5 includes an electric winch 51 and a second chain 52. The electric winch 51 is fixedly installed on the middle side of the transverse support plate 22. The upper sides of the two second chains 52 are both hooked to the output end of the electric winch 51. The lower side of one of the second chains 52 is rotatably connected to the rear side of the third rotating frame 45 through a rotating shaft, and the lower side of the other second chain 52 is rotatably connected to the front side of the fourth rotating frame 46 through a rotating shaft.

[0041] When the steel ingot is moved to the preset position, the electric winch 51 starts and drives the second chain 52 to move upward. The upward movement of the second chain 52 drives the rear side of the third rotating frame 45 and the front side of the fourth rotating frame 46 to move upward and rotate at the same time, so that the third rotating frame 45 and the fourth rotating frame 46 release the steel ingot, which is conducive to quickly releasing the steel ingot.

[0042] In addition, two lifting points can be fixedly installed on the middle side of the transverse support plate 22, so that a single crane can lift and move the lifting device as a whole when unloaded.

[0043] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A lifting device for lifting large steel ingots, comprising two overhead cranes (1), characterized in that, It also includes a balancing device (2), a connecting device (3), a clamping device (4), and an unlocking device (5). The two cranes (1) are provided with a balancing device (2) on their lower sides. The connecting device (3) is installed in the middle of the balancing device (2). The clamping device (4) is installed on the lower side of the connecting device (3). The unlocking device (5) is installed in the middle of the balancing device (2). The clamping device (4) includes: a horizontal plate (41), a connecting base (42), a first rotating frame (43), a second rotating frame (44), a third rotating frame (45), and a fourth rotating frame (46). The horizontal plate (41) is installed on the lower side of the connecting device (3). The two connecting bases (42) are respectively fixedly installed on the left and right sides above the horizontal plate (41). The first rotating frame (43) is rotatably connected to the front side below the horizontal plate (41) via a rotating shaft. The second rotating frame (44) is rotatably connected to the rear side below the horizontal plate (41) via a rotating shaft. The upper side of the third rotating frame (45) is rotatably connected to the end of the first rotating frame (43) away from the horizontal plate (41) via a rotating shaft. The upper side of the fourth rotating frame (46) is rotatably connected to the end of the second rotating frame (44) away from the horizontal plate (41) via a rotating shaft. The middle sides of the third rotating frame (45) and the fourth rotating frame (46) are rotatably connected via a rotating shaft.

2. The lifting device for lifting large steel ingots according to claim 1, characterized in that, The clamping device (4) further includes a heat insulation block (47), and the heat insulation block (47) is fixedly installed on the lower side of the third rotating frame (45) and the fourth rotating frame (46).

3. The lifting device for lifting large steel ingots according to claim 1, characterized in that, The balancing device (2) includes a connecting bracket (21) and a transverse support plate (22). The connecting bracket (21) is attached to the lower side of the output end of the crane (1), and the transverse support plate (22) is fixedly installed on the lower side of the connecting bracket (21).

4. The lifting device for lifting large steel ingots according to claim 3, characterized in that, The balancing device (2) further includes: a horizontal sensor (23), and two horizontal sensors (23) are symmetrically fixed on the left and right sides of the horizontal support plate (22) along the central axis of the horizontal support plate (22).

5. The lifting device for lifting large steel ingots according to claim 4, characterized in that, The balancing device (2) further includes an audible and visual alarm (24), and each of the connecting brackets (21) is fixedly installed with an audible and visual alarm (24) on its front side wall.

6. The lifting device for lifting large steel ingots according to claim 3, characterized in that, The connecting device (3) includes: a support base (31), four support bases (31) are arranged in a circular array with the center point of the lower side of the horizontal support plate (22) as the center, the support bases (31) are fixedly installed on the lower side of the horizontal support plate (22), and the support bases (31) are provided with a plurality of openings (32).

7. The lifting device for lifting large steel ingots according to claim 6, characterized in that, The connecting device (3) further includes: a first chain (33), one end of which is rotatably connected to the opening (32), and the other end of which is rotatably connected to the upper side of the connecting base (42).

8. The lifting device for lifting large steel ingots according to claim 1, characterized in that, The unlocking device (5) includes an electric winch (51) and a second chain (52). The electric winch (51) is fixedly installed on the middle side of the transverse support plate (22). The upper sides of the two second chains (52) are both hooked to the output end of the electric winch (51). The lower side of one of the second chains (52) is rotatably connected to the rear side of the third rotating frame (45) through a rotating shaft, and the lower side of the other second chain (52) is rotatably connected to the front side of the fourth rotating frame (46) through a rotating shaft.

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