Safety protection device of crane

Abstract

The utility model relates to the technical field of cranes and discloses a crane safety protection device which comprises a limiting mounting frame, a limiting groove is formed in the upper end of the front face of the limiting mounting frame, a movable groove is formed in the position, located at the lower end of the limiting groove, of the bottom of the limiting mounting frame, and a hoisting protection mechanism is arranged on the inner wall of the limiting mounting frame. The hoisting protection mechanism comprises a limiting plate, the outer wall of the limiting plate is movably connected with the position, located at the limiting groove, of the inner wall of the limiting mounting frame, a connecting column is fixedly mounted at the middle end of the top of the limiting plate, and the top of the connecting column movably penetrates through the top of the limiting mounting frame. And a first protection assembly, a second protection assembly, a third protection assembly and a fourth protection assembly on the hoisting protection mechanism can protect the lifting hook body when the lifting hook body ascends and descends, the situation that the lifting hook body makes contact with workers below to cause personnel injury is prevented, and the safety protection performance of the whole crane is improved.

Description

Technical Field

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

[0002] Lifting equipment refers to electromechanical equipment used for handling or moving heavy objects. Lifting equipment can be classified into several categories according to different structures, such as light and small lifting equipment, elevators, cranes, and overhead monorail systems, etc. Among them, a crane is a multi-action lifting equipment that vertically lifts and horizontally transports heavy objects within a certain range.

[0003] When the existing crane is hoisting, since there is no protection device at the hook of the crane, the hook is likely to come into contact with the staff during the moving process, which may cause certain harm to the staff and has certain potential safety hazards.

[0004] Therefore, we propose a safety protection device for a crane. Content of the Utility Model

[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art, and provides a safety protection device for a crane.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme. A safety protection device for a crane includes a limit mounting frame. A limit groove is opened at the upper end of the front surface of the limit mounting frame. An activity groove is opened at the lower end of the limit mounting frame at the bottom of the limit groove. A hoisting protection mechanism is arranged on the inner wall of the limit mounting frame. The hoisting protection mechanism includes a limit plate, and the outer wall of the limit plate is movably connected to the inner wall of the limit mounting frame at the limit groove. A connecting column is fixedly installed in the middle of the top of the limit plate, and the top of the connecting column movably penetrates through the top of the limit mounting frame. A buffer spring is fixedly installed on the top of the limit plate outside the connecting column, and the top of the buffer spring is fixedly connected to the top inner wall of the limit mounting frame. An electric push rod is fixedly installed on the inner wall of the limit plate, and the output end of the electric push rod is fixedly connected to the top inner wall of the limit mounting frame. An activity block is fixedly installed at the bottom of the limit plate, and the inner wall of the activity block is fixedly connected to the lower end of the outer wall of the electric push rod. A hook body is fixedly installed in the middle of the bottom of the activity block. A first protection component is arranged on the left side wall surface of the activity block.

[0007] Preferably, a second protection component is arranged on the right side wall surface of the activity block, and the structure of the second protection component is the same as that of the first protection component. A third protection component is arranged on the front surface of the activity block, and the structure of the third protection component is the same as that of the first protection component.

[0008] Preferably, a fourth protection component is arranged on the back surface of the activity block, and the structure of the fourth protection component is the same as that of the first protection component.

[0009] Preferably, the first protection component includes a first mounting plate, and the right side wall surface of the first mounting plate is fixedly connected to the left side wall surface of the movable block.

[0010] Preferably, a connecting rod is movably mounted on the front surface of the first mounting plate.

[0011] Preferably, a protective frame is movably mounted on the left side of the back surface of the connecting rod.

[0012] Preferably, a second mounting plate is movably mounted on the upper end of the back surface of the protective frame.

[0013] Preferably, the right side wall surface of the second mounting plate is fixedly connected to the left side wall surface of the limit mounting frame.

[0014] Preferably, a protective plate is fixedly mounted on the lower end of the inner wall of the protective frame.

[0015] Beneficial Effects

[0016] The utility model provides a crane safety protection device, which has the following beneficial effects:

[0017] (1) For this crane safety protection device, by setting up a lifting protection mechanism, the first protection component, the second protection component, the third protection component and the fourth protection component on the lifting protection mechanism can protect the hook body when the hook body is lifted and lowered, preventing the hook body from coming into contact with the staff below and causing injury to the staff, thus improving the safety protection performance of the entire crane.

[0018] (2) For this crane safety protection device, by setting up a buffer spring, the buffer spring can play a buffering role when the limit plate contacts the limit mounting frame, preventing damage from occurring when the limit plate contacts the limit mounting frame, and improving the service life of the entire device.

[0019] (3) For this crane safety protection device, by setting up an electric push rod, the electric push rod can automatically control the opening and closing of the first protection component, the second protection component, the third protection component and the fourth protection component, enabling the first protection component, the second protection component, the third protection component and the fourth protection component to protect the hook body when needed, and releasing the protection of the first protection component, the second protection component, the third protection component and the fourth protection component when the movable block hoists goods, thus improving the practicability of the entire device. Description of the Drawings

[0020] Figure 1 is the front overall structure schematic diagram of the utility model;

[0021] Figure 2 is the front structure schematic diagram of the lifting protection mechanism of the utility model;

[0022] Figure 3 This is a front structural schematic diagram of the first protection component of the present utility model.

[0023] Legend: 10, limit mounting frame; 11, limit groove; 12, movable groove; 13, hoisting protection mechanism; 14, limit plate; 15, connecting column; 16, buffer spring; 17, electric push rod; 18, movable block; 19, hook body; 20, first protection component; 21, second protection component; 22, third protection component; 23, fourth protection component; 24, first mounting plate; 25, connecting rod; 26, protection frame; 27, second mounting plate; 28, protection plate. Detailed implementation manners

[0024] Example 1: A crane safety protection device, as Figure 1 shown, includes a limit mounting frame 10. A limit groove 11 is provided at the upper end of the front surface of the limit mounting frame 10. A movable groove 12 is provided at the bottom of the limit mounting frame 10 below the limit groove 11. A hoisting protection mechanism 13 is provided on the inner wall of the limit mounting frame 10. By providing the hoisting protection mechanism 13, the first protection component 20, the second protection component 21, the third protection component 22, and the fourth protection component 23 on the hoisting protection mechanism 13 can protect the hook body 19 when the hook body 19 is lifted and lowered, preventing the hook body 19 from coming into contact with the staff below and causing injuries to the staff, and improving the safety protection performance of the entire crane.

[0025] Example 2: On the basis of Example 1, as Figure 2As shown, the lifting protection mechanism 13 includes a limit plate 14, and the outer wall of the limit plate 14 is movably connected to the inner wall of the limit mounting frame 10 at the limit groove 11, a connecting column 15 is fixedly installed at the top middle end of the limit plate 14, and the top of the connecting column 15 movably passes through the top of the limit mounting frame 10, the top of the limit plate 14 is located on the outside of the connecting column 15 and a buffer spring 16 is fixedly installed, and the top of the buffer spring 16 is fixedly connected to the top of the inner wall of the limit mounting frame 10, an electric push rod 17 is fixedly installed on the inner wall of the limit plate 14, and the output end of the electric push rod 17 is fixedly connected to the top of the inner wall of the limit mounting frame 10, a movable block 18 is fixedly installed at the bottom of the limit plate 14, and the inner wall of the movable block 18 is fixedly connected to the lower end of the outer wall of the electric push rod 17, A hook body 19 is fixedly installed at the middle end of the bottom, a first protective component 20 is provided on the left wall of the movable block 18, a second protective component 21 is provided on the right wall of the movable block 18, and the structure of the second protective component 21 is consistent with the first protective component 20, a third protective component 22 is provided on the front of the movable block 18, and the structure of the third protective component 22 is consistent with the first protective component 20, a fourth protective component 23 is provided on the back of the movable block 18, and the structure of the fourth protective component 23 is consistent with the first protective component 20, and a buffer spring 16 is provided, which can buffer the contact between the limit plate 14 and the limit mounting frame 10, prevent the limit plate 14 from contacting with the limit mounting frame 10 and causing damage, thereby improving the service life of the entire device.

[0026] Embodiment 3: Based on Embodiment 1 and Embodiment 2, Figure 3 As shown, the first protection assembly 20 includes a first mounting plate 24, and the right side wall of the first mounting plate 24 is fixedly connected to the left side wall of the movable block 18, a connecting rod 25 is movably installed on the front of the first mounting plate 24, a protection frame 26 is movably installed on the left side of the back of the connecting rod 25, a second mounting plate 27 is movably installed on the upper end of the back of the protection frame 26, and the right side wall of the second mounting plate 27 is fixedly connected to the left side wall of the limit mounting frame 10, and a protection plate 28 is fixedly installed on the lower end of the inner wall of the protection frame 26, by setting an electric The push rod 17, the electric push rod 17 can automatically control the opening and closing of the first protection component 20, the second protection component 21, the third protection component 22 and the fourth protection component 23, so that the first protection component 20, the second protection component 21, the third protection component 22 and the fourth protection component 23 can protect the hook body 19 when needed, and when the movable block 18 is lifting the cargo, the protection of the first protection component 20, the second protection component 21, the third protection component 22 and the fourth protection component 23 is released, thereby improving the practicality of the entire device.

[0027] Working principle of the utility model: First, the electric push rod 17 drives the movable block 18 to move downward, causing the movable block 18 to drive the hook body 19 to move downward. At this time, the first protection component 20, the second protection component 21, the third protection component 22, and the fourth protection component 23 protect the hook body 19 to prevent the hook body 19 from coming into contact with the staff below and causing personal injury. When the movable block 18 moves downward, it drives the limit plate 14 to move downward, causing the limit plate 14 to drive the connecting column 15 to move downward inside the limit groove 11 to limit the limit plate 14. When the limit plate 14 moves downward, it compresses the buffer spring 16, and the buffer spring 16 plays a buffering role when the limit plate 14 contacts the limit mounting frame 10 to prevent damage when the limit plate 14 contacts the limit mounting frame 10. When the hook body 19 needs to hoist goods, the electric push rod 17 drives the first protection component 20, the second protection component 21, the third protection component 22, and the fourth protection component 23 to release the protection of the hook body 19. The electric push rod 17 drives the movable block 18 to move upward, causing the movable block 18 to drive the hook body 19 to move upward. At this time, the goods can be hung on the hook body 19, and then the electric push rod 17 drives the first protection component 20, the second protection component 21, the third protection component 22, and the fourth protection component 23 to protect the hook body 19 again, and the hoisting of the goods can be carried out, improving the safety protection performance of the entire crane.

[0028] The above shows and describes the basic principles, main features, and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection claimed by the utility model is defined by the appended claims and their equivalents.

Claims

1. A crane safety protection device, including a limit mounting bracket (10), characterized in that: The upper end of the front surface of the limit mounting frame (10) is provided with a limit groove (11). At the lower end of the limit groove (11) at the bottom of the limit mounting frame (10), a movable groove (12) is provided. A hoisting protection mechanism (13) is arranged on the inner wall of the limit mounting frame (10). The hoisting protection mechanism (13) includes a limit plate (14). The outer wall of the limit plate (14) is movably connected to the inner wall of the limit mounting frame (10) at the limit groove (11). In the middle of the top of the limit plate (14), a connecting column (15) is fixedly installed. The top of the connecting column (15) movably penetrates through the top of the limit mounting frame (10). On the top of the limit plate (14) and outside the connecting column (15), a buffer spring (16) is fixedly installed. The top of the buffer spring (16) is fixedly connected to the top of the inner wall of the limit mounting frame (10). An electric push rod (17) is fixedly installed on the inner wall of the limit plate (14). The output end of the electric push rod (17) is fixedly connected to the top of the inner wall of the limit mounting frame (10). A movable block (18) is fixedly installed at the bottom of the limit plate (14). The inner wall of the movable block (18) is fixedly connected to the lower end of the outer wall of the electric push rod (17). In the middle of the bottom of the movable block (18), a hook body (19) is fixedly installed. A first protection component (20) is arranged on the left side wall surface of the movable block (18).

2. The crane safety protection device according to claim 1, characterized in that: A second protection component (21) is arranged on the right side wall surface of the movable block (18). The structure of the second protection component (21) is the same as that of the first protection component (20). A third protection component (22) is arranged on the front surface of the movable block (18). The structure of the third protection component (22) is the same as that of the first protection component (20).

3. The crane safety protection device according to claim 1, characterized in that: A fourth protection component (23) is arranged on the back surface of the movable block (18). The structure of the fourth protection component (23) is the same as that of the first protection component (20).

4. The crane safety protection device according to claim 1, characterized in that: The first protection component (20) includes a first mounting plate (24). The right side wall surface of the first mounting plate (24) is fixedly connected to the left side wall surface of the movable block (18).

5. The crane safety protection device according to claim 4, characterized in that: A connecting rod (25) is movably installed on the front surface of the first mounting plate (24).

6. The crane safety protection device according to claim 5, characterized in that: On the left side of the back surface of the connecting rod (25), a protection frame (26) is movably installed.

7. The crane safety protection device according to claim 6, characterized in that: On the upper end of the back surface of the protection frame (26), a second mounting plate (27) is movably installed.

8. The crane safety protection device according to claim 7, characterized in that: The right side wall surface of the second mounting plate (27) is fixedly connected to the left side wall surface of the limit mounting frame (10).

9. The crane safety protection device according to claim 6, characterized in that: A protection plate (28) is fixedly installed at the lower end of the inner wall of the protection frame (26).

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