Safety protection device of crane

Abstract

The utility model discloses a safety protection device of a crane, which belongs to the technical field of cranes and comprises a lifting hook body, an anti-unhooking component and a protection component, a limiting groove is formed in the lifting hook body, and a through groove is formed in the limiting groove. The limiting clamping plate pushes the movable rod to horizontally slide towards the outer side of the lifting hook body in the through groove, so that the first spring is stressed and compressed, a lifting rope of goods enters the bottom of the lifting hook body and is matched with the limiting groove, and the phenomenon that the goods fall off from the lifting hook body in the lifting process can be effectively prevented; the occurrence of safety accidents is avoided; and the pressure generated by collision between an arc-shaped anti-collision plate and the surface of goods is buffered and weakened through contraction and resilience generated by the elastic effect of four second springs, so that the collision between the bottom of the lifting hook body and the goods can be effectively buffered and protected, and the damage degree of the goods is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a crane safety protection device. Background Art

[0002] A crane is a multi-action material handling machine that lifts and carries heavy objects vertically and horizontally within a certain range. Cranes are primarily classified into two categories: bridge cranes and jib cranes. Bridge cranes are widely used in environments such as workshops, warehouses, and material yards. They are the most widely used and numerous type of lifting machinery. Consequently, China has authorized a utility model patent (publication number: CN220011918U) proposing a safety protection device for bridge cranes. When lifting longer objects, this device first connects the object to a hook. Then, lifting ropes are installed at both ends of the object, with the ends of the ropes connected to slots at the ends of the crossbar. During the lifting process, a spring and a rotating shaft connect the crossbar, allowing a certain degree of deflection to ensure that the object is not affected by the hooking and lifting process. The crossbar's deflection is limited by the through-slot, ensuring that both ends of the object are aligned during the lifting process, preventing severe tilting or even falling, thereby improving the crane's operational safety.

[0003] Although the device can protect the crane, it is difficult to effectively protect the hook set on the device when lifting goods. During the lifting process, the goods are likely to fall off the hook, which will lead to safety accidents and affect the personal safety of the staff. In addition, during the process of lifting goods, when the hook is lowered too quickly, it is easy for the bottom of the hook to collide with the goods, thereby causing damage to the goods and unnecessary economic losses. Therefore, a crane safety protection device is proposed to address the above situation. Utility Model Content

[0004] The purpose of the utility model is to provide a crane safety protection device, which can effectively prevent cargo from falling off the hook body through the structural design of the anti-unhooking component and the protection component, and can effectively buffer the collision between the bottom of the hook body and the cargo, thereby solving the problem that cargo is easily fallen off the hook and the bottom of the hook collides with the cargo and damages the cargo.

[0005] The utility model is realized through the following technical solutions:

[0006] The utility model is a crane safety protection device, comprising a hook body, an anti-unhooking component and a protection component, the hook body is provided with a limiting groove, the limiting groove is provided with a through groove, the anti-unhooking component comprises a limiting card plate and a movable rod, the top end of the limiting card plate is rotatably connected to the hook body, the bottom end surface of the movable rod contacts the inner surface of the hook body, one end of the movable rod is rotatably connected to the anti-unhooking component, the outer surface gap of the movable rod is matched with a first spring, the end of the movable rod away from the limiting card plate is matched with the through groove, the first spring is matched with the limiting groove, the protection component comprises an arc-shaped anti-collision plate, a T-shaped plate is provided on the arc-shaped anti-collision plate, the number of the T-shaped plates is four, a vertical pole is vertically installed on the T-shaped plate, the outer surface gap of the vertical pole is matched with a second spring, the top outer surface gap of the vertical pole is matched with a fixing sleeve, and one side of the fixing sleeve is connected to the bottom outer side of the hook body.

[0007] Furthermore, a limiting groove is provided on the hook body.

[0008] Furthermore, a mounting seat is provided at the top end of the hook body.

[0009] Furthermore, the mounting seat is provided with four assembly holes. The mounting seat is provided with four assembly holes.

[0010] Furthermore, one end of the movable rod away from the limiting clamping plate passes through the through slot, and one end of the through slot away from the limiting clamping plate is provided with a limiting piece, and a pull ring is provided on the limiting piece.

[0011] Furthermore, a fixing block is horizontally arranged on the fixing sleeve, one end of the fixing block is connected to the bottom of the hook body, and the bottom end of the fixing sleeve is in contact with the top end of the second spring.

[0012] The utility model has the following beneficial effects:

[0013] 1. The utility model adopts the structural design of the anti-unhooking component, and pushes the movable rod to slide horizontally toward the outside of the hook body in the through groove through the limiting clamping plate, so that the first spring is compressed, and the lifting rope of the goods enters the bottom of the hook body and cooperates with the limiting groove, so that the hook body can be conveniently protected, effectively preventing the goods from falling off the hook body during lifting, avoiding the occurrence of safety accidents, and ensuring the personal safety of the staff.

[0014] 2. The utility model uses the structural design of the protective component and the contraction and rebound produced by the elastic action of the four second springs, so that the pressure generated by the collision between the arc-shaped anti-collision plate and the surface of the cargo is buffered and weakened, thereby effectively buffering the collision between the bottom of the hook body and the cargo, reducing the degree of damage to the cargo and reducing unnecessary economic losses.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the assembly structure of the hook body.

[0017] Figure 2 It is a structural diagram of the hook body.

[0018] Figure 3 It is a structural diagram of the side of the hook body.

[0019] Figure 4 This is a structural diagram of the anti-unhooking component.

[0020] Figure 5 Schematic diagram of the structure of the protection component.

[0021] In the figure: 1. Hook body; 101. Limiting groove; 102. Through groove; 103. Limiting groove; 104. Mounting seat; 2. Anti-unhooking assembly; 201. Limiting clamp; 202. Movable rod; 203. First spring; 204. Limiting plate; 205. Pull ring; 3. Protective assembly; 301. Arc-shaped anti-collision plate; 3011. T-shaped plate; 302. Vertical pole; 303. Second spring; 304. Fixed sleeve. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-5 The utility model provides a technical solution: a crane safety protection device, including a hook body 1, an anti-unhooking component 2 and a protection component 3. A mounting seat 104 is provided at the top of the hook body 1, and the hook body 1 is connected to the suspension seat of the crane through the mounting seat 104. There are four assembly holes on the mounting seat 104, which can facilitate the assembly of the mounting seat 104 on the suspension seat. A limiting groove 101 is provided on the hook body 1, and a through groove 102 is provided in the limiting groove 101. A limiting groove 103 is provided on the hook body 1, which can limit the lifting rope of the cargo to prevent the lifting rope from moving during lifting.

[0024] The anti-unhooking component 2 includes a limit card plate 201 and a movable rod 202. The top of the limit card plate 201 is rotatably connected to the hook body 1, and the bottom end surface of the movable rod 202 contacts the inner surface of the hook body 1. One end of the movable rod 202 is rotatably connected to the anti-unhooking component 2, and the outer surface gap of the movable rod 202 is matched with a first spring 203. The end of the movable rod 202 away from the limit card plate 201 cooperates with the through slot 102, and the first spring 203 cooperates with the limiting slot 101. The end of the movable rod 202 away from the limit card plate 201 passes through the through slot 102, and the end of the through slot 102 away from the limit card plate 201 is provided with a limit plate 204, which can limit the movable rod 202. A pull ring 205 is provided on the limit plate 204, which can facilitate pulling the pull ring 205 after the cargo lifting is completed, and the limit card plate 201 is rotated through the movable rod 202, thereby realizing the removal of the lifting rope from the hook body 1.

[0025] When lifting cargo, first put the lifting rope on the cargo into the hook tip position of the hook body 1, so that the lifting rope contacts the limiting card plate 201 on the anti-unhooking component 2, and then pull the lifting rope to squeeze the limiting card plate 201. After the limiting card plate 201 is squeezed, it rotates on the hook body 1. Through the rotation of the limiting card plate 201, the squeezing force is horizontally transmitted to the movable rod 202, so that the movable rod 202 slides horizontally in the through groove 102 toward the outside of the hook body 1. Through the horizontal movement of the movable rod 202, the first spring 20 3 contacts the inner wall of the limiting groove 101 and is compressed on the outer surface of the limiting card plate 201, so that the movable rod 202 and the limiting card plate 201 rotate, the limiting card plate 201 is separated from the hook tip of the hook body 1, and the cargo rope enters the bottom of the hook body 1 and cooperates with the limiting groove 103. At this time, the squeezing force of the rope on the limiting card plate 201 disappears, the first spring 203 rebounds and pushes the movable rod 202 to slide horizontally in the through groove 102 toward the inner side of the hook body 1, so that the limiting card plate 201 rotates to its original position.

[0026] The protective component 3 includes an arc-shaped anti-collision plate 301, on which a T-shaped plate 3011 is provided. There are four T-shaped plates 3011, and a vertical pole 302 is vertically installed on the T-shaped plate 3011. The outer surface gap of the vertical pole 302 is fitted with a second spring 303, and the top outer surface gap of the vertical pole 302 is fitted with a fixing sleeve 304. One side of the fixing sleeve 304 is connected to the bottom outer side of the hook body 1, and a fixing block is horizontally provided on the fixing sleeve 304. One end of the fixing block is connected to the bottom of the hook body 1, so that the fixing sleeve 304 can be easily installed on the hook body 1, and the bottom end of the fixing sleeve 304 contacts the top of the second spring 303.

[0027] During the process of lifting goods, when the crane on the crane lowers the hook body 1 too fast and collides with the goods to be lifted, the bottom surface of the arc-shaped anti-collision plate 301 on the protective component 3 collides with the surface of the goods first. The upward reaction force generated by the collision of the arc-shaped anti-collision plate 301 and the goods is transmitted to the four vertical poles 302 through the four T-shaped plates 3011 on the arc-shaped anti-collision plate 301. After the vertical pole 302 is subjected to the upward force, it moves vertically upward in the fixed sleeve 304. The second spring 303 contracts after being subjected to the force, causing the arc-shaped anti-collision plate 301 to move up at the bottom of the hook body 1. The contraction and rebound caused by the elastic action of the four second springs 303 buffer and weaken the pressure generated by the collision of the arc-shaped anti-collision plate 301 and the surface of the goods.

[0028] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A crane safety protection device, comprising a hook body (1), characterized in that: A limiting groove (101) is provided on the hook body (1), and a through groove (102) is provided in the limiting groove (101); The anti-unhooking assembly (2) is also included. The anti-unhooking assembly (2) includes a limiting card plate (201) and a movable rod (202). The top end of the limiting card plate (201) is rotatably connected to the hook body (1). The bottom end surface of the movable rod (202) contacts the inner surface of the hook body (1). One end of the movable rod (202) is rotatably connected to the anti-unhooking assembly (2). A first spring (203) is fitted in the outer surface gap of the movable rod (202). One end of the movable rod (202) away from the limiting card plate (201) is fitted in the through slot (102). The first spring (203) is fitted in the limiting slot (101). The invention also includes a protection component (3), wherein the protection component (3) includes an arc-shaped anti-collision plate (301), a T-shaped plate (3011) is provided on the arc-shaped anti-collision plate (301), and the number of the T-shaped plates (3011) is four. A vertical pole (302) is vertically mounted on the T-shaped plate (3011), a second spring (303) is fitted in the outer surface gap of the vertical pole (302), a fixing sleeve (304) is fitted in the outer surface gap of the top of the vertical pole (302), and one side of the fixing sleeve (304) is connected to the outer side of the bottom of the hook body (1).

2. A crane safety protection device according to claim 1, characterized in that: A limiting groove (103) is provided on the hook body (1).

3. A crane safety protection device according to claim 2, characterized in that: A mounting seat (104) is provided at the top end of the hook body (1).

4. A crane safety protection device according to claim 3, characterized in that: The mounting seat (104) is provided with four assembly holes.

5. A crane safety protection device according to any one of claims 1 to 4, characterized in that: One end of the movable rod (202) away from the limiting clamping plate (201) passes through the through slot (102), and one end of the through slot (102) away from the limiting clamping plate (201) is provided with a limiting piece (204), and a pull ring (205) is provided on the limiting piece (204).

6. A crane safety protection device according to claim 1, characterized in that: A fixing block is horizontally arranged on the fixing sleeve (304), one end of the fixing block is connected to the bottom of the hook body (1), and the bottom end of the fixing sleeve (304) is in contact with the top end of the second spring (303).

Images