Suspension clamp for crane

Abstract

The utility model aims to provide a suspension clamp for a crane, which comprises a clamp body and a swing plate, the clamp body comprises a bottom plate, a back plate and a top plate, the back plate is respectively connected with one end of the bottom plate and one end of the top plate, so that a U-shaped trough is formed among the bottom plate, the back plate and the top plate, the U-shaped trough is used for accommodating a steel plate, the top plate is provided with a clearance groove, the clearance groove is communicated with the U-shaped trough, and the swing plate is arranged in the clearance groove. The swing plate is rotationally arranged on the top plate, one end of the swing plate is located in the receding groove, the end, away from the receding groove, of the swing plate is used for being connected with a crane, and when the end, away from the receding groove, of the swing plate is lifted by the crane, the end, located in the receding groove, of the swing plate extends into the U-shaped trough. Thus, when the crane lifts the end, away from the receding groove, of the swing plate, the swing plate rotates relative to the clamp body, and the end, located in the receding groove, of the swing plate returns and stretches into the U-shaped material groove to press the steel plate. Therefore, the steel plate can be reliably and safely lifted.

Description

Technical Field

[0001] This utility model relates to the technical field of clamps, and in particular to a lifting clamp for cranes. Background Technology

[0002] In industrial production scenarios such as welding, the hoisting and handling of steel plates is a common and important task. To achieve safe and efficient hoisting of steel plates, steel plate clamps are widely used as a key hoisting tool.

[0003] Currently, most existing steel plate clamps use springs to apply elastic force to clamp steel plates. This structure has several drawbacks. First, in terms of ease of operation, when using spring-loaded steel plate clamps, operators need to manually overcome the spring force to open the clamp, place it in the appropriate position on the steel plate, and then rely on the spring's rebound force to clamp the steel plate. This process not only requires physical strength but is also relatively cumbersome, especially during frequent steel plate lifting operations, which significantly reduces work efficiency. Moreover, when it is necessary to release the steel plate, the spring force must also be manually overcome to open the clamp, making the operation inflexible and inconvenient. Second, over long-term use, springs are prone to fatigue and aging, leading to a decrease in elasticity. This makes the clamping force of the steel plate clamp unstable, posing a safety hazard of the steel plate slipping during lifting, seriously threatening the safety of operators and the normal operation of production equipment.

[0004] In summary, existing methods of clamping steel plates using springs are no longer sufficient to meet the demands of modern industrial production for efficient and safe lifting operations. Therefore, to address these issues, the crane clamp described in this application is proposed. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a crane clamp that is easy to operate and highly safe.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A lifting clamp for a crane, comprising:

[0008] The clamping body includes a base plate, a back plate, and a top plate. The back plate is connected to one end of the base plate and one end of the top plate, respectively, so that a U-shaped material channel is formed between the base plate, the back plate, and the top plate. The U-shaped material channel is used to receive steel plates. A clearance groove is formed on the top plate, and the clearance groove communicates with the U-shaped material channel.

[0009] A swing plate is rotationally arranged on the top plate, and one end of the swing plate is located in the clearance groove, and the other end of the swing plate is used for being connected with the crane, and when the other end of the swing plate is lifted by the crane, the other end of the swing plate located in the clearance groove extends into the U-shaped material groove.

[0010] Optionally, the ratio of the height to the depth of the U-shaped material groove is 0.05-0.2.

[0011] Optionally, the ratio of the height to the depth of the U-shaped material groove is 0.15-0.2.

[0012] Optionally, the bottom plate, the back plate and the top plate are integrally formed.

[0013] Optionally, two lifting lugs are arranged on the side of the top plate away from the bottom plate, and the two lifting lugs are respectively located on the two sides of the top surface of the top plate.

[0014] Optionally, a rotating shaft is arranged on the swing plate, and the two ends of the rotating shaft respectively pass through the two lifting lugs.

[0015] Optionally, two clamping blocks are further arranged on the rotating shaft, and the two clamping blocks are respectively abutted on the side of the two lifting lugs facing each other.

[0016] Optionally, the rotating shaft is welded with the swing plate.

[0017] Optionally, a lifting ring is further arranged on the end of the swing plate away from the clearance groove.

[0018] Compared with the prior art, the crane lifting clamp has at least the following advantages:

[0019] The crane lifting clamp comprises a clamp body and a swing plate, the clamp body comprises a bottom plate, a back plate and a top plate, the back plate is connected with one end of the bottom plate and one end of the top plate respectively, so that a U-shaped material groove is formed between the bottom plate, the back plate and the top plate, the U-shaped material groove is used for accommodating a steel plate, the top plate is provided with a clearance groove, the clearance groove is communicated with the U-shaped material groove, the swing plate is rotationally arranged on the top plate, and one end of the swing plate is located in the clearance groove, the other end of the swing plate is used for being connected with the crane, and when the other end of the swing plate is lifted by the crane, the other end of the swing plate located in the clearance groove extends into the U-shaped material groove. In this way, when the other end of the swing plate away from the clearance groove is lifted by the crane, the swing plate rotates relative to the clamp body, and the other end of the swing plate located in the clearance groove extends into the U-shaped material groove again to press the steel plate. Therefore, the steel plate can be reliably and safely lifted. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the premise of the drawings.

[0021] Figure 1 Fig. 1 is a structural schematic view of a crane lifting clamp according to an embodiment of the present application;

[0022] Figure 2 Fig. 2 is a use state schematic view of the crane lifting clamp shown in Fig. 1; Figure 1

[0023] Fig. 3 is a cross-sectional schematic view of the crane lifting clamp shown in Fig. 1. Figure 3 Figure 1 Legend of reference signs:

[0024] 10, crane lifting clamp; 100, clamp body; 200, swing plate; 110, bottom plate; 120, back plate; 130, top plate; 140, U-shaped trough; 131, emptying groove; 150, lifting lug; 310, rotating shaft; 320, clamping block; 400, lifting ring. DETAILED DESCRIPTION

[0025] In order to facilitate understanding of the present application, the present application will be more fully described below with reference to the relevant drawings. The preferred embodiments of the present application are shown in the drawings.

[0026] As shown in Fig. 1, a crane lifting clamp 10 includes a clamp body 100 and a swing plate 200. The clamp body 100 includes a bottom plate 110, a back plate 120 and a top plate 130. The back plate 120 is connected to one end of the bottom plate 110 and one end of the top plate 130, respectively, so as to form a U-shaped trough 140 between the bottom plate 110, the back plate 120 and the top plate 130. The U-shaped trough 140 is used for accommodating a steel plate. An emptying groove 131 is formed in the top plate 130 and communicates with the U-shaped trough 140. The swing plate 200 is rotatably arranged on the top plate 130, and one end of the swing plate 200 is located in the emptying groove 131. The end of the swing plate 200 away from the emptying groove 131 is used for being connected to a crane. When the end of the swing plate 200 away from the emptying groove 131 is lifted by the crane, the end of the swing plate 200 located in the emptying groove 131 extends into the U-shaped trough 140.

[0027] As shown in Fig. 2, the crane lifting clamp 10 is used in a state of being connected to the crane. The end of the swing plate 200 away from the emptying groove 131 is lifted by the crane, and the end of the swing plate 200 located in the emptying groove 131 extends into the U-shaped trough 140. Figures 1 to 3

[0028] ​​It should be noted that the back plate 120 is connected with the bottom plate 110 and the top plate 130 respectively, so that the U-shaped trough 140 is formed among the three. In an embodiment, the bottom plate 110, the back plate 120 and the top plate 130 are integrally formed by welding. Further, the middle part of the swing plate 200 is rotationally connected with the top surface of the top plate 130. So that one end of the swing plate 200 is located in the empty slot 131, and the other end is close to the back plate 120. The end of the swing plate 200 away from the empty slot 131 is used to be connected with the crane. In this way, in use, the worker puts the clamp body 100 on the edge of the steel plate, that is, the edge of the steel plate is inserted into the U-shaped trough 140, and then the end of the swing plate 200 away from the empty slot 131 is lifted by the crane, so that the swing plate 200 rotates relative to the clamp body 100, and the end of the swing plate 200 located in the empty slot 131 extends into the U-shaped trough 140 again to press the steel plate. The greater the weight of the steel plate is, the greater the pressure of the swing plate 200 on the steel plate will be. In this way, the crane lifting clamp 10 of the present application can reliably and safely lift the steel plate.

[0029] As shown in Figure 3 , in an embodiment, the ratio of the height H to the depth D of the U-shaped trough 140 is 0.05-0.2.

[0030] It should be noted that, in order to ensure that the crane lifting clamp 10 has sufficient safety and that the U-shaped trough 140 can reliably clamp the steel plate, the ratio of the height H to the depth D of the U-shaped trough 140 is set to be between 0.05 and 0.35. Embodiment one: the depth D of the U-shaped trough 140 is 100 mm, and the height H of the U-shaped trough 140 is in the range of 5 mm-20 mm. Embodiment two: the height H of the U-shaped trough 140 is 10 mm, and the depth D of the U-shaped trough 140 is in the range of 50 mm-200 mm. In this way, after the specific height H of the U-shaped trough 140 is selected according to the actual thickness of the steel plate to be lifted, the specific depth D can be selected according to the ratio range, which can effectively ensure that the steel plate is clamped into the U-shaped trough 140 and remains stable.

[0031] As shown in Figure 3 , in an embodiment, the ratio of the height H to the depth D of the U-shaped trough 140 is 0.15-0.2.

[0032] It should be noted that, in embodiment three, the depth D of the U-shaped trough 140 is 100 mm, and the height H of the U-shaped trough 140 is in the range of 15 mm-20 mm. In embodiment four, the height H of the U-shaped trough 140 is 10 mm, and the depth D of the U-shaped trough 140 is in the range of 50 mm-66.7 mm. In this way, the steel plate can be reliably inserted into the U-shaped trough 140 and clamped when the steel plate is reliably inserted into the U-shaped trough 140, and the swing plate 200 can reliably and stably clamp the steel plate when lifting.

[0033] AsFigures 1 to 3 As shown in the figure, in an embodiment, two lugs 150 are arranged on the side of the top plate 130 away from the bottom plate 110, and the two lugs 150 are respectively located on the two sides of the top surface of the top plate 130.

[0034] It should be noted that the two lugs 150 are both welded and fixed on the top surface of the top plate 130, and the swing plate 200 is rotationally connected with the two lugs 150.

[0035] As shown in the figure, in an embodiment, a rotating shaft 310 is arranged on the swing plate 200, and the two ends of the rotating shaft 310 respectively pass through the two lugs 150. Figures 1 to 3

[0036] It should be noted that, for example, the rotating shaft 310 is welded and fixed with the swing plate 200, so that the swing plate 200 can stably rotate relative to the clamp body 100.

[0037] As shown in the figure, in an embodiment, two clamping blocks 320 are further arranged on the rotating shaft 310, and the two clamping blocks 320 are respectively abutted on the side of the two lugs 150 facing each other. Figures 1 to 3

[0038] It should be noted that in order to stably place the swing plate 200 in the middle of the air avoidance groove 131, two clamping blocks 320 are welded on the rotating shaft 310, so that the two clamping blocks 320 are respectively abutted on the two lugs 150. In this way, the two lugs 150 limit the two clamping blocks 320, so as to avoid the rotating shaft 310 from moving in the lugs 150, thereby reliably locating the swing plate 200 in the air avoidance groove 131.

[0039] As shown in the figure, in an embodiment, a lifting ring 400 is further arranged on the end of the swing plate 200 away from the air avoidance groove 131. Figures 1 to 3

[0040] It should be noted that in order to facilitate the crane to lift the swing plate 200, a lifting ring 400 is welded on the end of the swing plate 200, i.e. on the end of the swing plate 200 away from the air avoidance groove 131, so that the crane lifts the swing plate 200 through the lifting ring 400. Further, in an embodiment, an iron chain is arranged on the lifting ring 400, so that the crane lifts the lifting ring 400 through the iron chain. Further, in an embodiment, the lifting ring 400 is welded and fixed with the swing plate 200.

[0041] ​​​The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. Among them, the installation / fixed / setting in the utility model is understood as including but not limited to the locking and fixing by using screw / screw, welding unless otherwise defined. It should be pointed out that for ordinary skilled person in the art, without departing from the concept of the utility model, several modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A lifting clamp for a crane, characterized in that The utility model relates to a steel plate conveying device, which comprises a clamp body and a swing plate. The clamp body comprises a bottom plate, a back plate and a top plate, the back plate is connected with one end of the bottom plate and one end of the top plate respectively, so that a U-shaped trough is formed among the bottom plate, the back plate and the top plate, the U-shaped trough is used for accommodating a steel plate, an emptying groove is formed in the top plate and communicates with the U-shaped trough, and the swing plate is rotatably arranged on the top plate, one end of the swing plate is located in the emptying groove, and the other end of the swing plate is used for being connected with a crane. The ratio of the height to the depth of the U-shaped trough is 0.05-0.

2.

2. The lifting clamp for cranes according to claim 1, characterized in that The ratio of the height to the depth of the U-shaped trough is 0.15-0.

2.

3. The lifting clamp for cranes according to claim 2, characterised in that The bottom plate, the back plate and the top plate are integrally formed.

4. The lifting clamp for cranes according to claim 1, characterized in that Two lifting lugs are arranged on the side of the top plate away from the bottom plate, and the two lifting lugs are respectively located on the two sides of the top surface of the top plate.

5. The lifting clamp for cranes according to claim 1, characterized in that, A rotating shaft is arranged on the swing plate, and the two ends of the rotating shaft respectively pass through the two lifting lugs.

6. The lifting clamp for cranes according to claim 5, characterized in that Two clamping blocks are further arranged on the rotating shaft, and the two clamping blocks respectively abut against the side faces of the two lifting lugs facing each other.

7. The lifting clamp for cranes according to claim 6, characterised in that The rotating shaft is welded with the swing plate.

8. The lifting clamp for cranes according to claim 6, characterized in that A lifting ring is further arranged on the end of the swing plate away from the emptying groove.

9. The lifting clamp for cranes according to claim 1, characterized in that ​

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