Four-point balance automatic opening and closing steel ingot hoisting clamp

Abstract

The utility model discloses a four-point balance automatic opening and closing steel ingot hoisting clamp which comprises a cross beam assembly and a steel ingot clamp assembly, the cross beam assembly comprises a main beam and a pair of balance beams hinged to the two ends of the top of the main beam, the top end of each balance beam is provided with two first lifting points used for fixed lifting, the automatic lifting device is installed in the middle of the top of the main beam, and the steel ingot clamp assembly is hung at the lower end of the main beam and connected with the automatic lifting device. Four-point hoisting at the top end is achieved through the two balance beams, the two balance beams are hinged to the lower main beam, and overall hoisting balance is guaranteed. Meanwhile, the automatic lifting device is combined with the gravity of the curved inner clamp arm and the gravity of the curved outer clamp arm to control the automatic opening and closing of the steel ingot clamp assembly, the automatic operation level is improved, automatic hooking and unhooking are achieved through the self-gravity of the device, the operation time is shortened, the working efficiency is improved, the manual hooking and unhooking procedures are reduced, and the labor intensity of workers is reduced. And safe production is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting clamps, in particular to a four-point balanced automatic opening and closing steel ingot hoisting clamp. Background Art

[0002] The steel ingots are usually hoisted by a simple device that is connected to the clamp by a crossbar. During the operation, the hook and unhook are mainly carried out manually. The hoisting of the clamp is unstable, and there is a risk of the steel ingot tipping over. In addition, the hooking and unloading time is long and the efficiency is low. Especially in a high temperature environment, the hooking and unhooking are unsafe. Utility Model Content

[0003] In order to solve the technical problems mentioned in the background technology, the utility model provides a four-point balanced automatic opening and closing steel ingot hoisting clamp.

[0004] The utility model adopts the following technical scheme: a four-point balanced automatic opening and closing steel ingot hoisting fixture, comprising a crossbeam assembly and a steel ingot clamp assembly; the crossbeam assembly comprises a main beam and a pair of balance beams hinged at both ends of the top of the main beam; two first lifting points for fixed lifting are respectively arranged at the top of each balance beam;

[0005] An automatic lifting device is installed in the middle of the top of the main beam;

[0006] The steel ingot clamp assembly is suspended at the lower end of the main beam and connected to the automatic lifting device;

[0007] The steel ingot clamp assembly comprises a clamp upper beam, an anchor chain, a traction chain, a connecting rod, a curved inner clamp arm and a curved outer clamp arm;

[0008] The lower end of the main beam is provided with four sets of lower lifting lugs in front, back, left and right directions;

[0009] The top ends of a pair of anchor chains are connected to the front and rear groups or the left and right groups of lower lifting ears, so that the ingot clamp assembly is arranged vertically or horizontally to the main beam direction;

[0010] The bottom ends of a pair of anchor chains are hinged to a pair of second suspension points at the top end of the clamp upper beam through pins;

[0011] A third hanging point is provided at the middle of the bottom end of the clamp upper beam;

[0012] The top ends of the four groups of connecting rods are hinged to the third suspension point through the first rotating shaft in sequence;

[0013] The two groups of connecting rods located on the inner side and the two groups of connecting rods located on the outer side are arranged in a figure eight shape;

[0014] One end of the curved inner clamp arm is inserted into the insertion hole located in the middle of the curved outer clamp arm, so that the two are arranged in a cross shape, the intersection is connected by the second rotating shaft, and the intersection is located directly below the third hanging point;

[0015] The front end clamping parts of the curved inner clamp arm and the curved outer clamp arm are in an outwardly convex curved shape, and the inner side of the end head of the front end clamping part is provided with a tip for connecting with the steel ingot;

[0016] The bottom ends of the two groups of connecting rods located on the inner side are connected to the two sides of the top end of the curved inner clamp arm through the third rotating shaft;

[0017] The bottom ends of the two groups of connecting rods located outside are connected to the two sides of the top end of the curved outer clamp arm through a fourth rotating shaft;

[0018] The traction and lifting points are symmetrically arranged on the outer side of the curved inner clamp arm and the outer side of the curved outer clamp arm;

[0019] A pair of traction lifting points are respectively located on both sides of the intersection of the curved inner clamp arm and the curved outer clamp arm;

[0020] The traction suspension points of the curved inner clamp arm and the curved outer clamp arm are connected to the first traction chain and the second traction chain respectively;

[0021] The top ends of the first traction chain and the second traction chain are respectively connected to the traction ring at the bottom end of the automatic lifting device;

[0022] The curved inner clamp arm and the curved outer clamp arm are pulled up and down by the automatic lifting device to close inwards or open outwards along the second rotating shaft.

[0023] Furthermore, an elastic limit block is provided between the curved inner clamp arm and the curved outer clamp arm to control the opening and closing angle therebetween.

[0024] Compared with the prior art, the utility model has the following advantages: the four-point balanced automatic opening and closing steel ingot hoisting fixture designed by the utility model realizes the four-point hoisting at the top through two balance beams, and the two balance beams are hinged with the lower main beam to ensure the overall hoisting balance. At the same time, the automatic opening and closing of the steel ingot clamp assembly is controlled by the automatic lifting device combined with the self-gravity of the curved inner clamp arm and the curved outer clamp arm, which improves the level of automated operation, and uses the self-gravity of the device to automatically hook and unhook, shortening the operation time, improving work efficiency, reducing the manual hooking and unhooking process, and facilitating safe production. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of the four-point balanced automatic opening and closing steel ingot hoisting fixture of the utility model;

[0026] Figure 2 It is a side view of the four-point balanced automatic opening and closing steel ingot hoisting fixture of the utility model;

[0027] Figure 3 This is a schematic diagram of the overall structure of the steel ingot clamp assembly of the utility model in the maximum opening state;

[0028] Figure 4It is a schematic diagram of the overall structure of the steel ingot clamp assembly of the utility model in a state of minimum opening.

[0029] in:

[0030] 1-main beam, 2-balance beam, 3-first lifting point, 4-automatic lifting device, 5-clamp upper beam, 6-anchor chain, 7-elastic limit block, 8-connecting rod, 9-curved inner clamp arm, 10-curved outer clamp arm, 11-lower lifting ear, 12-second lifting point, 13-third lifting point, 14-first rotating shaft, 15-second rotating shaft, 16-steel ingot, 17-top, 18-third rotating shaft, 19-fourth rotating shaft, 20-traction lifting point, 21-first traction chain, 22-second traction chain, 23-traction ring. DETAILED DESCRIPTION

[0031] In order to facilitate those skilled in the art to understand the technical solution of the utility model, further description is now made with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model.

[0032] In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present invention. However, it is apparent that one or more embodiments may be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0033] like Figure 1-2 The figure shows the overall structure schematic diagram and side view of the four-point balanced automatic opening and closing steel ingot hoisting fixture of the utility model, which mainly includes a crossbeam assembly and a steel ingot clamp assembly. The crossbeam assembly includes a main beam 1 and a pair of balance beams 2 hinged at both ends of the top of the main beam 1, and two first lifting points 3 for fixed lifting are respectively arranged at the top of each balance beam 2. An automatic lifting device 4 is installed in the middle of the top of the main beam 1. The steel ingot clamp assembly is suspended at the lower end of the main beam 1 and is connected to the automatic lifting device 4, and the opening and closing of the steel ingot clamp assembly is controlled by the automatic lifting device 4.

[0034] like Figure 1As shown, the steel ingot clamp assembly includes a clamp upper beam 5, an anchor chain 6, a traction chain, a connecting rod 8, a curved inner clamp arm 9 and a curved outer clamp arm 10. A total of four groups of lower lifting ears 11 are set at the lower end of the main beam 1, front and rear, left and right. The top ends of a pair of anchor chains 6 are connected to the front and rear two groups or left and right two groups of lower lifting ears 11, so that the steel ingot clamp assembly is arranged vertically or horizontally to the main beam direction. The bottom ends of a pair of anchor chains 6 are hinged to a pair of second hanging points 12 at the top of the clamp upper beam 5 through a pin shaft, and a third hanging point 13 is set in the middle of the bottom end of the clamp upper beam 5. The top ends of the four groups of connecting rods 8 are hinged to the third hanging point 13 through the first rotating shaft 14 in turn. The two groups of connecting rods 8 on the inner side and the two groups of connecting rods 8 on the outer side are arranged in an eight-shaped shape. One end of the curved inner clamp arm 9 is inserted into the jack located in the middle of the curved outer clamp arm 10, so that the two are arranged in a cross shape. The intersection is connected by a second rotating shaft 15, and the intersection is located at Directly below the third lifting point 13, the front end clamping parts of the curved inner clamp arm 9 and the curved outer clamp arm 10 are in an outwardly convex curved shape, and the inner side of the end of the front end clamping part is provided with a top 17 for connecting with the steel ingot 16. The bottom ends of the two groups of connecting rods 8 on the inner side are connected to the two sides of the top of the curved inner clamp arm 9 through the third rotating shaft 18, and the bottom ends of the two groups of connecting rods 8 on the outer side are connected to the two sides of the top of the curved outer clamp arm 10 through the fourth rotating shaft 19. The traction lifting points 20 are symmetrically provided on the outer side of the curved inner clamp arm 9 and the outer side of the curved outer clamp arm 10. A pair of traction points 20 are respectively located on both sides of the intersection of the curved inner clamp arm 9 and the curved outer clamp arm 10. The traction points 20 of the curved inner clamp arm 9 and the curved outer clamp arm 10 are respectively connected to the first traction chain 21 and the second traction chain 22. The top ends of the first traction chain 21 and the second traction chain 22 are respectively connected to the traction ring 23 at the bottom end of the automatic lifting device 4. The curved inner clamp arm 9 and the curved outer clamp arm 10 are closed inward or opened outward along the second rotating shaft 15 through the up and down traction of the automatic lifting device 4.

[0035] like Figure 3 and 4 The figure shows the overall structure of the ingot clamp assembly of the utility model in the maximum and minimum opening states. During hoisting, the automatic lifting device 4 lifts the first traction chain 21 and the second traction chain 22 upwards, so that the curved inner clamp arm 9 and the curved outer clamp arm 10 are opened, and when the first traction chain 21 and the second traction chain 22 are lowered, the curved inner clamp arm 9 and the curved outer clamp arm 10 are moved closer to each other due to their own gravity. During specific implementation, an elastic limit block 7 is provided between the curved inner clamp arm 9 and the curved outer clamp arm 10 to control the opening and closing angle between the two. During hoisting, the opening and closing size of the curved inner clamp arm 9 and the curved outer clamp arm 10 can be controlled by the elastic limit block 7 according to the size of the steel ingot. The top 17 inside the curved inner clamp arm 9 and the curved outer clamp arm 10 supports the steel ingot, and while the hoist is lifted upward as a whole, the weight of the steel ingot will stretch the connecting rod downward, and the connecting rod drives the curved inner clamp arm 9 and the curved outer clamp arm 10 to clamp the two sides of the steel ingot, and the tension becomes tighter and tighter. At the same time, the top presses the steel ingot tightly, thereby realizing the hoisting of the steel ingot.

[0036] In summary, the four-point balanced automatic opening and closing steel ingot hoisting fixture designed by the utility model realizes the four-point hoisting at the top through two balance beams, and the two balance beams are hinged with the lower main beam to ensure the overall hoisting balance. At the same time, the utility model controls the automatic opening and closing of the steel ingot clamp assembly through the automatic lifting device combined with the self-gravity of the curved inner clamp arm and the curved outer clamp arm, thereby improving the level of automated operation, and automatically hooking and unhooking by using the self-gravity of the device, thereby shortening the operation time, improving work efficiency, reducing the manual hooking and unhooking process, and facilitating safe production.

[0037] The above embodiments are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A four-point balanced automatic opening and closing steel ingot lifting fixture, characterized in that: It comprises a crossbeam assembly and a steel ingot clamp assembly; the crossbeam assembly comprises a main beam (1) and a pair of balance beams (2) hinged at two ends of the top of the main beam (1); two first lifting points (3) for fixed lifting are respectively arranged at the top of each balance beam (2); An automatic lifting device (4) is installed in the middle of the top of the main beam (1); The steel ingot clamp assembly is suspended at the lower end of the main beam (1) and connected to the automatic lifting device (4); The steel ingot clamp assembly comprises a clamp upper beam (5), an anchor chain (6), a traction chain, a connecting rod (8), a curved inner clamp arm (9) and a curved outer clamp arm (10); A total of four groups of lower lifting lugs (11) are arranged at the lower end of the main beam (1), front and rear, left and right; The top ends of a pair of anchor chains (6) are connected to two groups of front and rear or two groups of left and right lower lifting ears (11) so that the steel ingot clamp assembly is arranged vertically or horizontally to the main beam direction; The bottom ends of a pair of anchor chains (6) are hingedly connected to a pair of second suspension points (12) at the top end of the clamp upper beam (5) through pins; A third suspension point (13) is provided at the middle of the bottom end of the clamp upper beam (5); The top ends of the four groups of connecting rods (8) are hinged to the third suspension point (13) in sequence through the first rotating shaft (14); The two groups of connecting rods (8) located on the inner side and the two groups of connecting rods (8) located on the outer side are arranged in an eight-shaped shape; One end of the curved inner clamp arm (9) is inserted into the insertion hole located in the middle of the curved outer clamp arm (10), so that the two are arranged in a cross shape, the intersection is connected by a second rotating shaft (15), and the intersection is located directly below the third hanging point (13); The front end clamping parts of the curved inner clamp arm (9) and the curved outer clamp arm (10) are in an outwardly convex curved shape, and a tip (17) for connecting with a steel ingot (16) is arranged inside the end of the front end clamping part; The bottom ends of the two groups of connecting rods (8) located on the inner side are connected to the top sides of the curved inner clamp arm (9) through a third rotating shaft (18); The bottom ends of the two groups of connecting rods (8) located on the outside are connected to the top sides of the curved outer clamp arm (10) through a fourth rotating shaft (19); The outer side of the curved inner clamp arm (9) and the outer side of the curved outer clamp arm (10) are symmetrically provided with traction and suspension points (20); A pair of traction suspension points (20) are respectively located on both sides of the intersection of the curved inner clamp arm (9) and the curved outer clamp arm (10); The traction points (20) of the curved inner clamp arm (9) and the curved outer clamp arm (10) are respectively connected to a first traction chain (21) and a second traction chain (22); The top ends of the first traction chain (21) and the second traction chain (22) are respectively connected to the traction ring (23) at the bottom end of the automatic lifting device (4); The curved inner clamp arm (9) and the curved outer clamp arm (10) are pulled up and down by the automatic lifting device (4) to close inwards or open outwards along the second rotating shaft (15).

2. The four-point balanced automatic opening and closing steel ingot lifting fixture according to claim 1 is characterized in that: An elastic limiting block (7) is arranged between the curved inner clamp arm (9) and the curved outer clamp arm (10) to control the opening and closing angle between the two.

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