Safety device for ladle crane and steel ladle positioning and hooking and unhooking identification

Abstract

The invention discloses a safety device for positioning a ladle crane and a steel ladle and identifying hooking and unhooking. Comprising a lifting hook installed on a lifting mechanism of the ladle crane and a T-shaped hanging lug fixedly connected with the outer wall of a steel ladle, and a heavy pressure type locking safety prompting assembly is installed in the middle of the inner side wall of the lifting hook. The heavy pressure type locking safety prompting assembly lifts the gravity of the T-shaped hanging lug by means of the lifting hook so as to drive the safety hook. According to the steel ladle lifting device, when a lifting hook hooks and lifts a hanging lug, due to the fact that the hanging lug is matched with the gravity of a steel ladle, an M-shaped socket is promoted to move downwards, two first inclined faces are driven to extrude second inclined faces formed in the top ends of L-shaped clamping blocks correspondingly, and a spring is stretched and lengthened; and further, the ends, away from each other, of the two L-shaped clamping blocks are inserted into the clamping grooves correspondingly, so that the M-shaped socket is limited, and it is guaranteed that the M-shaped socket is fixed to the lifting hook through the gravity effect generated when the hanging lug is lifted.

Description

Technical Field

[0001] This invention relates to the field of casting crane technology, and in particular to a safety device for positioning and identifying hooking / unhooking of a casting crane and ladle. Background Technology

[0002] Casting cranes are key equipment on metallurgical continuous casting production lines, primarily responsible for hoisting and transporting high-temperature steel ladles. Their operational safety directly impacts the normal operation of the entire production line and the safety of personnel and equipment. The most dangerous accident during ladle hoisting is a fall caused by abnormal hook detachment during lifting or transport, with potentially disastrous consequences.

[0003] Currently, there are various safety devices in existing technologies for positioning and hooking / unhooking identification of casting cranes and ladles. These devices typically use sensors (such as proximity switches, photoelectric sensors), machine vision systems, or laser scanners, installed on the crane trolley or hook, to detect the relative position and connection status between the hook and the ladle lifting lug. Their working principle is to provide an electrical signal of "lifting permitted" or "unhooked" to the operator in the crane cab by determining whether the hook has reached the predetermined position or whether the hook (1) locking tongue has rotated into place, thereby achieving safety interlock control.

[0004] However, the problem is: Blind spots and misjudgments: Although ground command personnel can observe the hooking process, given the large size of the ladle and the poor viewing angle of the lifting lug, it is difficult to accurately determine with the naked eye whether the hook has been fully and correctly hooked into the bottom of the lifting lug, or whether there are dangerous situations such as "false hooking" (i.e. the hook tip only touches the edge of the lifting lug). To solve the above problems, we designed a safety device for positioning and hooking / unhooking identification of the casting crane and ladle. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a safety device for positioning and hooking / unhooking identification of casting cranes and ladles.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A safety device for positioning and hooking / unhooking identification of a casting crane and a ladle includes a hook installed on the lifting mechanism of the casting crane and a T-shaped lug fixed to the outer wall of the ladle. A heavy-duty locking safety reminder component is installed in the middle of the inner side wall of the hook. The heavy-duty locking safety reminder component uses the lifting weight of the hook on the T-shaped lug to drive the safety hook. Furthermore, the heavy-duty locking safety reminder component, using the lifting weight of the hook on the T-shaped lug, can also quickly fix itself to the hook.

[0007] Preferably, the heavy-duty locking safety warning component includes a slot opened in the middle of the inner side wall of the hook, an M-shaped socket is movably inserted into the slot, and both sides of the M-shaped socket are movably sleeved on the outside of the hook.

[0008] Preferably, the bottom of the M-shaped socket has two symmetrically arranged first inclined surfaces, both of which are movably connected to the second inclined surface at the top of the L-shaped block. The two L-shaped blocks are symmetrically arranged and are movably inserted into the inner walls on both sides of the slot.

[0009] Preferably, two symmetrically arranged springs are fixed between the opposite ends of the two L-shaped blocks, and the springs are made of stainless steel.

[0010] Preferably, the two L-shaped blocks have one end that is far apart from each other extending to the outside of the hook, and have two symmetrically arranged third inclined surfaces, which are movably inserted into the slots opened on the inner walls of the M-shaped socket on both sides.

[0011] Preferably, a pressing block is fixedly connected to the center of the bottom part of the M-shaped socket, and the bottom end of the pressing block presses a pressing switch fixedly connected to the center of the bottom wall of the slot. The pressing switch is located between the two springs.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, when the hook is hoisted by the lug hook, the weight of the lug and the ladle causes the M-shaped socket to move downward, and drives the two first inclined surfaces to press against the second inclined surface opened at the top of the L-shaped block, causing the spring to stretch and lengthen. In addition, the two L-shaped blocks move away from each other, so that the two L-shaped blocks at opposite ends are inserted into the slots to limit the M-shaped socket, ensuring that the M-shaped socket is fixed on the hook by the weight of the lug hook during hoisting. At the same time, the pressing block also moves downward to press the pressing switch, and the pressing switch is electrically connected to the external indicator light, so that the external indicator light is lit to indicate that the hook is in a safe state, thus ensuring the safety during hoisting. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional first-view structure of a safety device for positioning and hooking / unhooking of a casting crane and a ladle, as proposed in this invention. Figure 2 This is a schematic diagram of the planar unfolded structure of each component in the heavy-pressure locking safety warning assembly of a safety device for positioning and hooking / unhooking of a casting crane and ladle proposed in this invention; Figure 3 This is an enlarged structural diagram of point A of a safety device for positioning and hooking / unhooking identification of a casting crane and ladle proposed in this invention.

[0014] In the diagram: 1. Hook; 2. Hanging lug; 3. Heavy-duty locking safety warning component; 31. M-type socket; 32. First inclined surface; 33. L-type locking block; 34. Second inclined surface; 35. Spring; 36. Pressing block; 37. Press switch; 38. Slot; 39. Third inclined surface. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0016] Blind spots and misjudgments: Although ground command personnel can observe the hooking process, given the large size of the steel ladle and the poor viewing angle of the lifting lug, it is difficult to accurately judge with the naked eye whether hook 1 has been completely and correctly hooked into the bottom of the lifting lug, or whether there is a dangerous situation such as "false hooking" where the hook tip only touches the edge of the lifting lug.

[0017] Reference Figure 1-3 A safety device for positioning and hooking / unhooking identification of a casting crane and a ladle includes a hook 1 installed on the lifting mechanism of the casting crane and a T-shaped lug 2 fixed to the outer wall of the ladle. A heavy-duty locking safety reminder component 3 is installed in the middle of the inner side wall of the hook 1. The heavy-duty locking safety reminder component 3 uses the lifting weight of the hook 1 on the T-shaped lug 2 to drive the safety hook. Furthermore, the heavy-duty locking safety reminder component 3 can also quickly fix itself to the hook 1 by using the lifting weight of the hook 1 on the T-shaped lug 2.

[0018] Furthermore, such as Figure 1-3As shown, in order to achieve fixation and safety warning actions by utilizing the gravity of the hook 1 hooking the lug 2, a heavy-duty locking safety warning component 3 is provided. This component includes a slot in the middle of the inner wall of the hook 1, into which an M-shaped socket 31 is movably inserted. Both sides of the M-shaped socket 31 are movably fitted onto the outer side of the hook 1. Two symmetrically arranged first inclined surfaces 32 are provided at the bottom center of the M-shaped socket 31. Both first inclined surfaces 32 movably overlap the second inclined surface 34 at the top of the L-shaped locking block 33. The two L-shaped locking blocks 33 are symmetrically arranged and movably inserted into the slot. On the inner walls of both sides of the slot, two symmetrically arranged springs 35 are fixed between the opposite ends of two L-shaped blocks 33. The springs 35 are made of stainless steel. The opposite ends of the two L-shaped blocks 33 extend to the outside of the hook 1 and have two symmetrically arranged third inclined surfaces 39. They are movably inserted into the slots 38 on the inner walls of the M-shaped socket 31. A pressing block 36 is fixed at the center of the bottom of the M-shaped socket 31. The bottom of the pressing block 36 presses the pressing switch 37 fixed in the center of the bottom wall of the slot. The pressing switch 37 is located between the two springs 35.

[0019] The push switch 37 is electrically connected to the external safety indicator light. When the push switch 37 is pressed, the external safety indicator light will light up to indicate that the hook 1 and the safety hook 1 lifting lug 2 are engaged. When the M-shaped socket 31 moves down, it is simultaneously pressed down by the two first inclined surfaces 32, which in turn can press the two L-shaped blocks 33 to move, so that the opposite ends of the two L-shaped blocks 33 are inserted into the corresponding slots 38, thereby limiting the M-shaped socket 31 and fixing it without the need for screws. The third inclined surface 39 causes the two L-shaped blocks 33 to disengage from the slot 38 when the spring 35 rebounds.

[0020] Example: When the hook 1 on the hoisting mechanism of the casting crane is lifted by the hook lug 2, the weight of the ladle, combined with the weight of the hook lug 2, causes the M-type socket 31 to move downwards. This causes the two first inclined surfaces 32 to press against the second inclined surface 34 at the top of the L-type locking block 33, and the spring 35 to stretch. In addition, the two L-type locking blocks 33 move away from each other, so that the two L-type locking blocks 33 at opposite ends are inserted into the locking slots 38 to limit the M-type socket 31. This ensures that the M-type socket 31 is fixed to the hook 1 by the weight of the hook lug 2 during lifting. At the same time, the pressing block 36 also moves downwards to press the pressing switch 37. The pressing switch 37 is electrically connected to the external indicator light, which illuminates the external indicator light to indicate that the hook is in a safe state, thus ensuring safety during lifting.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of the invention, all of which fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety device for ladle positioning and hooking and unhooking identification of a casting crane, comprising a hook (1) mounted on a hoisting mechanism of the casting crane and a T-shaped lug (2) fixed to an outer wall of the ladle, characterized in that, The inner side wall middle part of the hook (1) is provided with a heavy pressure type locking safety prompting assembly (3); The heavy pressure type locking safety prompting assembly (3) lifts the T-shaped ear (2) by the hook (1) to drive the safety hook, and then the heavy pressure type locking safety prompting assembly (3) lifts the T-shaped ear (2) by the hook (1) to promote the quick fixing of the heavy pressure type locking safety prompting assembly (3) on the hook (1).

2. A safety device for ladle positioning and hooking / unhooking identification of a casting crane according to claim 1, characterized in that, The heavy pressure type locking safety prompting assembly (3) comprises a slot formed in the inner side wall middle part of the hook (1), and an M-shaped socket (31) movably inserted into the slot, and the two side walls of the M-shaped socket (31) are movably sleeved on the outer side of the hook (1).

3. A safety device for ladle positioning and hooking / unhooking identification of a casting crane according to claim 2, characterized in that, The middle bottom end of the M-shaped socket (31) is provided with two symmetrically arranged first inclined surfaces (32), the two first inclined surfaces (32) are movably overlapped on the second inclined surfaces (34) formed at the top end of the L-shaped clamping block (33), the two L-shaped clamping blocks (33) are symmetrically arranged, and the two L-shaped clamping blocks (33) are movably inserted into the two side walls of the slot.

4. A safety device for ladle positioning and hooking / unhooking identification of a casting crane according to claim 3, characterized in that, Two symmetrically arranged springs (35) are fixedly connected between the opposite ends of the two L-shaped clamping blocks (33), and the springs (35) are made of stainless steel.

5. A safety device for ladle positioning and hooking and unhooking identification of a casting crane according to claim 4, characterized in that, The opposite ends of the two L-shaped clamping blocks (33) movably extend to the outer side of the hook (1) and are provided with two symmetrically arranged third inclined surfaces (39) movably inserted into the clamping grooves (38) formed in the two side walls of the M-shaped socket (31).

6. A safety device for ladle positioning and hooking and unhooking identification of a casting crane according to claim 4, characterized in that, A pressing block (36) is fixedly connected to the middle bottom end of the M-shaped socket (31), the bottom end of the pressing block (36) presses the pressing switch (37) fixedly connected to the middle part of the bottom wall of the slot, and the pressing switch (37) is located between the two springs (35).

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