A crane anti-fall safety protection device and protection method

Abstract

The present invention discloses a crane anti-fall safety protection device and protection method, belonging to the technical field of crane equipment. A crane anti-fall safety protection device and protection method, comprising a fixed frame, a guide groove is opened in the middle of the fixed frame, a driving mechanism is arranged inside the guide groove, a plurality of rotating frames are arranged outside the fixed frame, and the rotating frames are all equipped with a protection mechanism, the driving mechanism drives the rotating frame to rotate, a hook is fixedly installed at the lower end of the fixed frame, a mobile frame is arranged on the upper side of the fixed frame, and a hanging ring is fixedly installed on the upper side of the mobile frame. The present invention can squeeze the surroundings of the object to be hoisted through the provided protection mechanism, so that the goods remain stable, and the provided driving mechanism can automatically squeeze the outside of the object to be hoisted when the device and the object to be hoisted are hoisted, which is simple and convenient to operate, and can effectively prevent the object from falling and causing safety hazards.

Description

Technical Field

[0001] The present invention relates to the technical field of crane tools, and in particular to a crane anti-fall safety protection device and a protection method. Background Art

[0002] A crane refers to a multi-action lifting machinery that can vertically lift and horizontally move heavy objects within a certain range. It is a common lifting equipment, mainly used for vertical and horizontal transportation of materials in construction. It can also be used to lift building structures to assist in the installation and construction of building structures.

[0003] When the crane is working, it uses ropes to lift the objects to be lifted, or lifts the container containing the objects to be lifted, so as to transport the objects to be lifted. When the goods fall, it will threaten the workers on the ground, which may easily cause safety hazards. Although the hooks used on the lower side of the existing cranes can prevent the ropes from detaching from the hooks when in use, it is difficult to prevent the goods from becoming loose or disintegrating due to shaking. There is a risk of falling after the goods are loosened by shaking, thereby threatening the personal safety of the workers on the ground.

[0004] In view of this, the present invention proposes a crane anti-fall safety protection device and a protection method. Summary of the invention

[0005] Technical problem to be solved: The purpose of the present invention is to provide a crane anti-fall safety protection device and protection method to solve the problems raised in the above background technology.

[0006] 2. Technical solution: A crane anti-fall safety protection device includes a fixed frame, a guide groove is opened in the middle of the fixed frame, a driving mechanism is arranged inside the guide groove, a plurality of rotating frames are arranged on the outside of the fixed frame, and a protection mechanism is installed on each of the rotating frames. The driving mechanism drives the rotating frame to rotate, a hook is fixedly installed at the lower end of the fixed frame, a movable frame is arranged on the upper side of the fixed frame, and a hanging ring is fixedly installed on the upper side of the movable frame.

[0007] As an optional solution to the technical solution of the present application, the driving mechanism includes a guide block slidably installed inside the guide groove, and the driving mechanism also includes a driving rod rotatably connected to the fixed frame, and the lower outer wall of the driving rod is provided with an external thread, and the driving rod is threadedly connected to the guide block through the external thread, and a plurality of first balls are embedded in the driving rod, and the first balls are in friction contact with the fixed frame.

[0008] As an optional solution of the technical solution of the present application, a movable groove is opened at one end of the rotating frame close to the driving rod, a movable rod is slidably installed inside the movable groove, the guide block is rotatably connected to the movable rod, and the rotating frame is a bent structure.

[0009] As an optional solution to the technical solution of the present application, a threaded groove is provided on the upper outer wall of the driving rod, a second ball is embedded in the inner wall of the movable frame, the outer wall of the second ball is in extrusion contact with the inner wall of the threaded groove, a positioning frame is fixedly installed on the upper outer wall of the fixed frame, a plurality of positioning grooves are provided on the outer wall of the movable frame, the positioning frame is slidably connected to the positioning groove, and a return spring is fixedly installed between the movable frame and the fixed frame.

[0010] As an optional solution to the technical solution of the present application, a moving groove is opened on the upper side of the moving frame, and a moving block is slidably installed inside the moving groove. The lower end of the moving block is rotatably connected to a screw rod, and the screw rod is threadedly connected to the moving frame. A plurality of guide rods are fixedly installed at the lower end of the screw rod, and the lower end of the guide rod passes through the upper end of the driving rod and is slidably connected thereto.

[0011] As an optional solution to the technical solution of the present application, the protective mechanism includes a baffle, a limiting rod is fixedly installed on the baffle, the limiting rod passes through the rotating frame and is slidably connected thereto, a threaded rod is rotatably connected to the baffle, and the end of the threaded rod passes through the rotating frame and is threadedly connected thereto.

[0012] As an optional solution of the technical solution of the present application, a clamping frame is rotatably connected to the baffle plate, a plurality of second springs are fixedly mounted on the clamping frame, a notch is provided on the baffle plate, and the other end of the second spring is fixedly connected to the inner wall of the notch.

[0013] As an optional scheme of the technical solution of the present application, a piston cavity is provided on the rotating frame, and an insertion rod is slidably installed inside the piston cavity. A plurality of insertion holes are provided on the outer wall of the fixed frame relative to the insertion rod, and the insertion rod is plugged into the insertion holes. An air bag is installed inside the notch, and an air pipe is connected to the air bag, and the other end of the air pipe is connected to the inside of the piston cavity. A counterweight block is slidably installed on the lower side of the rotating frame, and a pull rope is fixedly installed on the counterweight block, and the other end of the pull rope is fixedly connected to the end of the insertion rod.

[0014] A crane anti-fall safety protection method:

[0015] S1: Connect the rope to the hanging ring and fix it to the object to be hoisted through the hook;

[0016] S2: Using a crane to lift the device so that the object to be lifted rises;

[0017] S3: When the device rises, the rotating frame rotates so that the baffle is located outside the object to be lifted to support and block the object to be lifted, preventing the object to be lifted from falling, and the pressing frame can press the upper end of the object to be lifted to keep the upper cargo stable.

[0018] 3. Beneficial effects: Compared with the prior art, the advantages of the present invention are:

[0019] The protective mechanism provided in the present invention can squeeze the surroundings of the object to be lifted so that the cargo remains stable, and the driving mechanism provided can automatically squeeze the outside of the object to be lifted when the device and the object to be lifted are lifted. The operation is simple and convenient, and it can effectively prevent the object from falling and causing safety hazards.

[0020] The compression frame provided in the present invention can squeeze the upper end of the cargo when the baffle is attached to the outside of the object to be hoisted, so that the cargo is compressed, further increasing the stability of the cargo, and can also prevent the upper cargo from being blown off by the wind when hoisted to mid-air, thereby causing a safety hazard, thereby achieving a better anti-falling effect.

[0021] The present invention can automatically fix the rotating frame after the rotating frame rotates by arranging the insertion rod in conjunction with the air bag, the air pipe and the counterweight block pull rope, so that the rotating frame remains stable when the device and the object to be hoisted are hoisted, thereby increasing the safety of the device, and automatically retracting the insertion rod when the object to be hoisted is lowered. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a partial structural schematic diagram of the fixed frame and the rotating frame of the present invention.

[0025] Figure 3 It is a schematic diagram of the structure of the driving rod part of the present invention.

[0026] Figure 4 It is a partial structural schematic diagram of the friction block of the present invention.

[0027] Figure 5 It is a partial structural schematic diagram of the insert rod and the threaded rod of the present invention.

[0028] Figure 6 It is a schematic diagram of the structure of the airbag and trachea part of the present invention.

[0029] Figure 7 It is a partial structural schematic diagram of the pull rope and counterweight block of the present invention.

[0030] Description of the numbers in the figure:

[0031] 1. Fixed frame; 2. Guide groove; 3. Driving mechanism; 4. Rotating frame; 5. Protection mechanism; 6. Hook; 7. Moving frame; 8. Hanging ring; 9. Guide block; 10. Driving rod; 11. External thread; 12. First ball; 13. Movable groove; 14. Movable rod; 15. Threaded groove; 16. Second ball; 17. Positioning frame; 18. Positioning groove; 19. Reset spring; 20. Moving groove; 21. Moving block; 22. Screw rod; 23. Guide rod; 24. Friction block; 25. First spring; 26. Switch; 27. Alarm; 28. Baffle; 29. ​​Limit rod; 30. Threaded rod; 31. Pressing frame; 32. Second spring; 33. Notch; 34. Piston chamber; 35. Insert rod; 36. Socket; 37. Airbag; 38. Air pipe; 39. Counterweight; 40. Pull rope. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0033] Example: See Figure 1-7 A crane anti-fall safety protection device includes a fixed frame 1, a guide groove 2 is opened in the middle of the fixed frame 1, a driving mechanism 3 is arranged inside the guide groove 2, a plurality of rotating frames 4 are arranged outside the fixed frame 1, and a protection mechanism 5 is installed on the rotating frame 4. The driving mechanism 3 drives the rotating frame 4 to rotate, a hook 6 is fixedly installed at the lower end of the fixed frame 1, a mobile frame 7 is arranged on the upper side of the fixed frame 1, and a hanging ring 8 is fixedly installed on the upper side of the mobile frame 7.

[0034] Specifically, the driving mechanism 3 includes a guide block 9 slidably installed inside the guide groove 2, and the guide block 9 can move along the direction of the guide groove 2. The driving mechanism 3 also includes a driving rod 10 rotatably connected to the fixed frame 1. The lower outer wall of the driving rod 10 is provided with an external thread 11. The driving rod 10 is threadedly connected to the guide block 9 through the external thread 11. A plurality of first balls 12 are embedded in the driving rod 10, and the first balls 12 are in frictional contact with the fixed frame 1. When the driving rod 10 rotates, the external thread 11 can be used to move the guide block 9 along the direction of the guide groove 2. After the guide block 9 moves, it can push one side of the movable rod 14 to cause it to move.

[0035] Furthermore, a movable groove 13 is formed at one end of the rotating frame 4 close to the driving rod 10, and a movable rod 14 is slidably installed inside the movable groove 13. The movable rod 14 can move along the direction of the movable groove 13, and the guide block 9 is rotatably connected to the movable rod 14, and the rotating frame 4 has a bent structure.

[0036] It is worth mentioning that a threaded groove 15 is provided on the upper outer wall of the driving rod 10, and a second ball 16 is embedded in the inner wall of the movable frame 7. The outer wall of the second ball 16 is in compression contact with the inner wall of the threaded groove 15. The second ball 16 can squeeze the inner wall of the threaded groove 15 when the movable frame 7 moves up and down, so that the driving rod 10 rotates under the action of the decomposition force of the squeezing force. A positioning frame 17 is fixedly installed on the upper outer wall of the fixed frame 1. A plurality of positioning grooves 18 are provided on the outer wall of the movable frame 7. The positioning frame 17 is slidably connected with the positioning groove 18, and the positioning frame 17 can move relative to the positioning groove 18. A return spring 19 is fixedly installed between the movable frame 7 and the fixed frame 1, and the return spring 19 can pull the movable frame 7.

[0037] In addition, a moving groove 20 is opened on the upper side of the moving frame 7, and a moving block 21 is slidably installed inside the moving groove 20. The moving block 21 can move relative to the moving groove 20. The lower end of the moving block 21 is rotatably connected to a screw rod 22. The screw rod 22 is threadedly connected to the moving frame 7. A plurality of guide rods 23 are fixedly installed at the lower end of the screw rod 22. The lower end of the guide rod 23 passes through the upper end of the driving rod 10 and is slidably connected thereto. When the driving rod 10 rotates, it can squeeze the guide rod 23 to drive the screw rod 22 to rotate.

[0038] It is worth noting that a friction block 24 is slidably installed inside the moving block 21, a first spring 25 is fixedly installed on the friction block 24, and a switch 26 is also fixedly installed inside the moving block 21. The friction block 24 can squeeze the first spring 25 after moving, and can squeeze the switch 26 after moving to a certain position. The moving block 21 is in active contact with the switch 26, and the friction block 24 and the moving block 21 squeeze the rope. When the rope is squeezed by the friction block 24, the friction block 24 can move under the action of friction when the rope moves. An alarm 27 is fixedly installed on the outside of the moving frame 7. After the switch 26 is squeezed, it can control the alarm 27 to sound an alarm, and the switch 26 is electrically connected to the alarm 27.

[0039] In addition, the protective mechanism 5 includes a baffle 28, on which a limiting rod 29 is fixedly installed. The limiting rod 29 passes through the rotating frame 4 and is slidably connected thereto. A threaded rod 30 is rotatably connected to the baffle 28. The threaded rod 30 is rotated to make it threadably engaged with the rotating frame 4, so that the baffle 28 can move along the direction of the limiting rod 29. The end of the threaded rod 30 passes through the rotating frame 4 and is threadably connected thereto.

[0040] Among them, a clamping frame 31 is rotatably connected to the baffle 28, and a pressure plate is elastically connected to the clamping frame 31. The pressure plate can move relative to the clamping frame 31. A plurality of second springs 32 are fixedly installed on the clamping frame 31. The second springs 32 can squeeze the clamping frame 31 and rotate the clamping frame 31 to an initial position relative to the baffle 28 when the clamping frame 31 is not subjected to external squeezing. A notch 33 is provided on the baffle 28, and the other end of the second spring 32 is fixedly connected to the inner wall of the notch 33.

[0041] On the basis of the above scheme, a piston chamber 34 is provided on the rotating frame 4, and a plug rod 35 is slidably installed inside the piston chamber 34, and the plug rod 35 can move along the direction of the piston chamber 34. A plurality of insertion holes 36 are provided on the outer wall of the fixed frame 1 relative to the insertion rod 35, and the plug rod 35 can be inserted into the inside of the insertion hole 36, so that the rotating frame 4 is fixed relative to the fixed frame 1, and the plug rod 35 is plugged into and matched with the insertion hole 36. An air bag 37 is installed inside the notch 33, and an air pipe 38 is connected to the air bag 37. After the air bag 37 is squeezed, the air inside the air bag can enter the piston chamber 34 through the air pipe 38, and the other end of the air pipe 38 is connected to the inside of the piston chamber 34. A counterweight block 39 is slidably installed on the lower side of the rotating frame 4, and the counterweight block 39 can move relative to the rotating frame 4. A pull rope 40 is fixedly installed on the counterweight block 39, and the other end of the pull rope 40 is fixedly connected to the end of the plug rod 35. When the counterweight block 39 rises, the pull rope 40 can be pulled.

[0042] A crane anti-fall safety protection method:

[0043] S1: Connect the rope to the hanging ring and fix it to the object to be hoisted through the hook 6;

[0044] S2: Using a crane to lift the device so that the object to be lifted rises;

[0045] S3: When the device rises, the rotating frame 4 rotates so that the baffle 28 is located outside the object to be hoisted to support and block the object to be hoisted to prevent it from falling, and the pressing frame 31 can press the upper end of the object to be hoisted to keep the upper cargo stable.

[0046] Working principle: When the device is in use, the rope is passed through the hanging ring 8 and fixed, and the object to be hoisted is hung on the hook 6. At this time, the device is hoisted by a crane. At this time, the mobile frame 7 can move relative to the fixed frame 1 under the gravity of the object to be hoisted and the pulling force of the crane on the hanging ring 8 through the rope. When the mobile frame 7 moves upward relative to the fixed frame 1, it can drive the second ball 16 to rise. After the second ball 16 rises, it can squeeze the inner wall of the thread groove 15, so that the driving rod 10 rotates. After the driving rod 10 rotates, the external thread 11 can make the guide block 9 rise along the direction of the guide groove 2. After the guide block 9 rises, it can push one end of the movable rod 14. At this time, the movable rod 14 can drive the rotating frame 4 to rotate. After the rotating frame 4 rotates The baffle plate 28 can be driven to rotate, and the baffle plate 28 can fit the outside of the object to be hoisted after rotating, and in this process, when the lower side of the clamping frame 31 contacts the outside of the object to be hoisted first, it can rotate, and when the baffle plate 28 is completely in contact with the outer wall of the object to be hoisted, the upper side of the clamping frame 31 can press the upper end of the object to be hoisted to prevent the goods from shaking and falling during the lifting process. Among them, when the rotating frame 4 rotates to a certain position, the counterweight block 39 can be pressed and contacted with the ground, and as the rotating frame 4 rotates, the counterweight block 39 is squeezed by the ground and can be retracted toward the inside of the rotating frame 4. At this time, the counterweight block 39 can pull the pull rope 40, so that the insertion rod 35 moves toward the inside of the piston chamber 34 until the baffle plate 28 is completely in contact with the outside of the object to be hoisted, and at the same time When the pressing frame 31 rotates, it can squeeze the airbag 37, so that the air in the airbag 37 is squeezed into the piston chamber 34, thereby increasing the pressure in the piston chamber 34. When the mobile frame 7 rises to the uppermost end relative to the fixed frame 1 and continues to rise, the counterweight block 39 can descend relative to the rotating frame 4, thereby loosening the pull rope 40. At this time, under the action of the pressure in the piston chamber 34, the insertion rod 35 can be inserted into the inside of the insertion hole 36, thereby fixing the rotating frame 4 relative to the fixed frame 1. In this process, the driving rod 10 rotates to push the guide rod 23 to rotate the screw rod 22. When the screw rod 22 rotates, it can cooperate with the thread of the mobile frame 7 to drive the moving block 21 to move along the direction of the moving groove 20. After the moving block 21 moves, it can contact the friction block 24 The column rope is squeezed tightly. When the rope shows signs of loosening, the friction block 24 can move relative to the moving block 21 inside it under the action of friction. After the moving block 21 moves, it can squeeze the first spring 25 and can squeeze the switch 26 after moving to a certain position. The switch 26 is used to control the alarm 27 to alarm, reminding the staff to stop lifting in time and put the object to be lifted on the ground in time. Among them, when the object to be lifted is lifted and moved to the specified position, when the lifted object gradually contacts the ground, the ground will first contact the counterweight block 39, so that the counterweight block 39 rises relative to the rotating frame 4. At this time, the pull rope 40 is pulled again to make the insertion rod 35 move to the inside of the piston chamber 34 and disengage from the socket 36. Afterwards, when the object to be lifted is on the ground,As the rope descends, the movable frame 7 can descend relative to the fixed frame 1 under the action of gravity and the return spring 19. At this time, the driving rod 10 rotates in the opposite direction to make the guide block 9 descend, thereby pushing the movable rod 14 to move, so that the rotating frame 4 rotates to the initial position.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A crane anti-fall safety protection device, comprising a fixing frame (1), characterized in that: A guide groove (2) is provided in the middle of the fixed frame (1), a driving mechanism (3) is provided inside the guide groove (2), a plurality of rotating frames (4) are provided outside the fixed frame (1), each of the rotating frames (4) is provided with a protective mechanism (5), the driving mechanism (3) drives the rotating frame (4) to rotate, a hook (6) is fixedly installed at the lower end of the fixed frame (1), a movable frame (7) is provided on the upper side of the fixed frame (1), and a hanging ring (8) is fixedly installed on the upper side of the movable frame (7); The driving mechanism (3) comprises a guide block (9) slidably mounted inside the guide groove (2), and the driving mechanism (3) further comprises a driving rod (10) rotatably connected to the fixing frame (1), an outer thread (11) is provided on the lower outer wall of the driving rod (10), and the driving rod (10) is threadedly connected to the guide block (9) via the outer thread (11), and a plurality of first balls (12) are embedded in the driving rod (10), and the first balls (12) are in frictional contact with the fixing frame (1); A movable groove (13) is formed at one end of the rotating frame (4) close to the driving rod (10), a movable rod (14) is slidably mounted inside the movable groove (13), the guide block (9) is rotatably connected to the movable rod (14), and the rotating frame (4) is a bent structure; The upper outer wall of the driving rod (10) is provided with a thread groove (15), the inner wall of the movable frame (7) is embedded with a second ball (16), the outer wall of the second ball (16) is in compression contact with the inner wall of the thread groove (15), a positioning frame (17) is fixedly mounted on the upper outer wall of the fixed frame (1), a plurality of positioning grooves (18) are provided on the outer wall of the movable frame (7), the positioning frame (17) is slidably connected to the positioning grooves (18), and a return spring (19) is fixedly mounted between the movable frame (7) and the fixed frame (1); A moving groove (20) is provided on the upper side of the moving frame (7), a moving block (21) is slidably mounted inside the moving groove (20), a screw rod (22) is rotatably connected to the lower end of the moving block (21), the screw rod (22) is threadedly connected to the moving frame (7), a plurality of guide rods (23) are fixedly mounted on the lower end of the screw rod (22), the lower ends of the guide rods (23) penetrate the upper end of the driving rod (10) and are slidably connected thereto.

2. A crane anti-fall safety protection device according to claim 1, characterized in that: The protection mechanism (5) comprises a baffle (28), a limiting rod (29) is fixedly mounted on the baffle (28), the limiting rod (29) passes through the rotating frame (4) and is slidably connected thereto, a threaded rod (30) is rotatably connected to the baffle (28), and an end of the threaded rod (30) passes through the rotating frame (4) and is threadedly connected thereto.

3. A crane anti-fall safety protection device according to claim 2, characterized in that: A pressing frame (31) is rotatably connected to the baffle plate (28), a plurality of second springs (32) are fixedly mounted on the pressing frame (31), a notch (33) is provided on the baffle plate (28), and the other end of the second spring (32) is fixedly connected to the inner wall of the notch (33).

4. A crane anti-fall safety protection device according to claim 3, characterized in that: The rotating frame (4) is provided with a piston cavity (34), an insertion rod (35) is slidably mounted inside the piston cavity (34), a plurality of insertion holes (36) are provided on the outer wall of the fixed frame (1) at a position relative to the insertion rod (35), the insertion rod (35) is plugged into and matched with the insertion holes (36), an air bag (37) is installed inside the notch (33), an air pipe (38) is connected to the air bag (37), the other end of the air pipe (38) is connected to the inside of the piston cavity (34), a counterweight block (39) is slidably mounted on the lower side of the rotating frame (4), a pull rope (40) is fixedly mounted on the counterweight block (39), and the other end of the pull rope (40) is fixedly connected to the end of the insertion rod (35).

5. The protection method of a crane anti-fall safety protection device according to claim 4 is characterized in that: S1: Connect the rope to the hanging ring (8) and fix it to the object to be hoisted through the hook (6); S2: Using a crane to lift the device so that the object to be lifted rises; S3: When the device rises, the rotating frame (4) rotates so that the baffle (28) is located outside the object to be lifted to support and block the object to be lifted, thereby preventing the object to be lifted from falling, and the pressing frame (31) can press the upper end of the object to be lifted, thereby keeping the upper cargo stable.

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