Safety protection device for crane

Abstract

The utility model discloses a safety protection device for a crane, which relates to the technical field of crane safety protection and comprises a crane body, a fixing component arranged in the middle of the crane body, a fixing seat fixedly connected to one end of the crane body, a support arm fixedly connected above the fixing seat, and a suspension arm rotatably connected to one end of the support arm far away from the fixing seat. The end, away from the supporting arm, of the suspension arm is fixedly connected with a take-up bin, a take-up and pay-off assembly is arranged in the take-up bin and rotationally connected with a steel wire rope, a supporting plate is fixedly connected to the lower portion of the steel wire rope, a fixing rod is fixedly connected to the lower portion of the supporting plate, and a cylindrical pin is connected to the lower portion of the fixing rod. And a lifting hook is fixedly connected below the cylindrical pin. The anti-collision device is easy to operate, the fixing assembly is driven by the motor, the anti-collision assembly and the folding and unfolding assembly move synchronously, manual operation steps are reduced, and the anti-collision device is safer.

Description

Technical Field

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

[0002] With the rapid development of modern construction, cranes, as important lifting equipment, are widely used in construction sites, port terminals, warehousing logistics and other fields. However, due to improper operation, equipment failures or environmental factors, there are certain safety risks during the use of cranes. Therefore, there is a lack of a safety protection device to ensure the safety of personnel. For this reason, technical personnel in this field have proposed a safety protection device for cranes to solve the problems raised in the above background. Content of the Utility Model

[0003] The purpose of the utility model is to provide a safety protection device for a crane to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A safety protection device for a crane includes a crane main body. A fixing component is arranged in the middle of the crane main body. One end of the crane main body is fixedly connected with a fixing seat. A support arm is fixedly connected above the fixing seat. The end of the support arm far away from the fixing seat is rotatably connected with a boom. An anti-collision component is slidably connected below the boom. A wire winding bin is fixedly connected to the end of the boom far away from the support arm. A wire winding and unwinding component is arranged inside the wire winding bin. The wire winding and unwinding component is rotatably connected with a steel wire rope. A support plate is fixedly connected below the steel wire rope. A fixing rod is fixedly connected below the support plate. A cylindrical pin is connected below the fixing rod. A hook is fixedly connected below the cylindrical pin.

[0006] As a further scheme of the utility model: The fixing component includes a first motor. A lifting screw rod is rotatably connected below the first motor. A support sleeve is threadedly connected to the outside of the lifting screw rod. A fixing plate is fixedly connected below the support sleeve. Several fixing bottom cones are fixedly connected to the bottom surface of the fixing plate.

[0007] As a further scheme of the utility model: The anti-collision component includes a second motor fixed inside the boom. An adjusting screw rod is rotatably connected to the second motor. A moving sleeve is threadedly connected to the adjusting screw rod. One end of the moving sleeve is fixedly connected with a sliding bottom plate. The sliding bottom plate is slidably connected with the boom. A plurality of buffer telescopic rods are fixedly connected to the sliding bottom plate. One end of the buffer telescopic rod far away from the sliding bottom plate is fixedly connected with a buffer plate.

[0008] As a further scheme of the utility model: A plurality of buffer strips are rotatably connected between the sliding bottom plate and the buffer plate. The buffer strips on the sliding bottom plate are rotatably connected with the buffer strips on the buffer plate through extrusion blocks. A buffer spring is connected between the two extrusion blocks.

[0009] As a further solution of the present utility model: The retracting and releasing assembly includes a driving gear, which is fixedly connected to one end of the adjusting screw rod away from the second motor. The driving gear meshes with a transmission gear, and the transmission gear is fixedly connected with a retracting and releasing rotating rod. The retracting and releasing rotating rod is rotatably connected to the side wall of the wire storage bin. A limiting plate is rotatably connected to the middle of the retracting and releasing rotating rod, and the limiting plate is fixedly connected to the lower bottom surface of the wire storage bin.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: 1. The operation of the present utility model is simple. The fixing assembly is driven by a motor, and the anti-collision assembly moves synchronously with the retracting and releasing assembly, reducing the manual operation steps and being safer; 2. The structure is reasonable, and the connection of each component is compact, which is convenient for installation and maintenance; 3. The safety is strong. Through the buffering effect of the anti-collision assembly, the direct collision between the suspended object and the boom is effectively prevented, reducing the probability of accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic structural diagram of a safety protection device for a crane;

[0012] Figure 2 It is a schematic structural diagram of the anti-collision assembly of a safety protection device for a crane;

[0013] Figure 3 It is a schematic structural diagram of the fixing assembly of a safety protection device for a crane;

[0014] Figure 4 It is a schematic structural diagram of the retracting and releasing assembly of a safety protection device for a crane;

[0015] In the figure: 1. Crane main body; 2. Fixing assembly; 3. Fixed seat; 4. Support arm; 5. Boom; 6. Anti-collision assembly; 7. Wire storage bin; 8. Retracting and releasing assembly; 9. Steel wire rope; 10. Support plate; 11. Fixed rod; 12. Cylindrical pin; 13. Hook; 14. First motor; 15. Lifting screw rod; 16. Support sleeve; 17. Fixed plate; 18. Fixed bottom cone; 19. Second motor; 20. Adjusting screw rod; 21. Moving sleeve; 22. Sliding bottom plate; 23. Buffer telescopic rod; 24. Buffer plate; 25. Buffer strip; 26. Extrusion block; 27. Buffer spring; 28. Driving gear; 29. Transmission gear; 30. Retracting and releasing rotating rod; 31. Limiting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0017] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0018] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0019] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0020] Example 1:

[0021] Please refer to Figures 1 - 4 , which includes a crane main body 1. A fixing component 2 is arranged in the middle of the crane main body 1. One end of the crane main body 1 is fixedly connected with a fixing seat 3. A support arm 4 is fixedly connected above the fixing seat 3. One end of the support arm 4 away from the fixing seat 3 is rotatably connected with a lifting arm 5. An anti-collision component 6 is slidably connected below the lifting arm 5. A wire winding bin 7 is fixedly connected to one end of the lifting arm 5 away from the support arm 4. A winding and unwinding component 8 is arranged inside the wire winding bin 7. The winding and unwinding component 8 is rotatably connected with a steel wire rope 9. A support plate 10 is fixedly connected below the steel wire rope 9. A fixing rod 11 is fixedly connected below the support plate 10. A cylindrical pin 12 is connected below the fixing rod 11. A hook 13 is fixedly connected below the cylindrical pin 12.

[0022] The cylindrical pin 12 above the hook 13 adopts an internal thread structure. If the object to be lifted cannot use the hook 13, other lifting workpieces can also be replaced.

[0023] The fixed component 2 includes a first motor 14. A lifting screw rod 15 is rotatably connected below the first motor 14. A support sleeve 16 is threadedly connected to the outside of the lifting screw rod 15. A fixed plate 17 is fixedly connected below the support sleeve 16. A plurality of fixed bottom cones 18 are fixedly connected to the bottom surface of the fixed plate 17.

[0024] First, move the crane main body 1 to the required position. Then start the first motor 14. The first motor 14 drives the lifting screw rod 15 to rotate, causing the support sleeve 16 to move downward until the fixed bottom cones 18 below the fixed plate 17 are embedded in the ground. At this time, the fixed component 2 can fix the device so that it will not tip over due to incorrect operation or other factors.

[0025] Example two:

[0026] Please refer to Figures 1 - 4 , which includes a crane main body 1. A fixed component 2 is arranged in the middle of the crane main body 1. A fixed seat 3 is fixedly connected to one end of the crane main body 1. A support arm 4 is fixedly connected above the fixed seat 3. A lifting arm 5 is rotatably connected to the end of the support arm 4 away from the fixed seat 3. An anti-collision component 6 is slidably connected below the lifting arm 5. A wire winding bin 7 is fixedly connected to the end of the lifting arm 5 away from the support arm 4. A wire winding and unwinding component 8 is arranged inside the wire winding bin 7. A wire rope 9 is rotatably connected to the wire winding and unwinding component 8. A support plate 10 is fixedly connected below the wire rope 9. A fixed rod 11 is fixedly connected below the support plate 10. A cylindrical pin 12 is connected below the fixed rod 11. A hook 13 is fixedly connected below the cylindrical pin 12.

[0027] The cylindrical pin 12 above the hook 13 adopts an internal thread structure. If the object to be lifted cannot use the hook 13, other lifting workpieces can also be replaced.

[0028] The fixed component 2 includes a first motor 14. A lifting screw rod 15 is rotatably connected below the first motor 14. A support sleeve 16 is threadedly connected to the outside of the lifting screw rod 15. A fixed plate 17 is fixedly connected below the support sleeve 16. A plurality of fixed bottom cones 18 are fixedly connected to the bottom surface of the fixed plate 17.

[0029] First, move the crane main body 1 to the required position. Then start the first motor 14. The first motor 14 drives the lifting screw rod 15 to rotate, causing the support sleeve 16 to move downward until the fixed bottom cones 18 below the fixed plate 17 are embedded in the ground. At this time, the fixed component 2 can fix the device so that it will not tip over due to incorrect operation or other factors.

[0030] The anti-collision assembly 6 includes a second motor 19 fixed inside the boom 5. The second motor 19 is rotationally connected to an adjusting lead screw 20. A moving sleeve 21 is threadedly connected to the adjusting lead screw 20. One end of the moving sleeve 21 is fixedly connected to a sliding bottom plate 22. The sliding bottom plate 22 is slidably connected to the boom 5. A plurality of buffer telescopic rods 23 are fixedly connected to the sliding bottom plate 22. One end of the buffer telescopic rod 23 away from the sliding bottom plate 22 is fixedly connected to a buffer plate 24.

[0031] A plurality of buffer strips 25 are rotatably connected to the sliding bottom plate 22 and the buffer plate 24. The buffer strips 25 on the sliding bottom plate 22 are rotatably connected to the buffer strips 25 on the buffer plate 24 through extrusion blocks 26. A buffer spring 27 is connected between the two extrusion blocks 26.

[0032] After starting the second motor 19, the second motor 19 drives the sliding bottom plate 22 on the moving sleeve 21 to slide towards the support arm 4, and then moves towards the wire storage bin 7 according to the height of the lifted object. If the lifted object shakes and collides with the boom 5 during the movement, it will first hit the buffer plate 24. The buffer plate 24 is buffered by the buffer telescopic rods 23, and a force is applied to the extrusion block 26 through the buffer strips 25, so that the buffer spring 27 plays a buffering role, and finally the collision force is reduced to avoid damage to the boom 5.

[0033] The winding and unwinding assembly 8 includes a driving gear 28. The driving gear 28 is fixedly connected to one end of the adjusting lead screw 20 away from the second motor 19. The driving gear 28 meshes with a transmission gear 29. The transmission gear 29 is fixedly connected to a winding and unwinding rotating rod 30. The winding and unwinding rotating rod 30 is rotatably connected to the side wall of the wire storage bin 7. A limiting plate 31 is rotatably connected to the middle of the winding and unwinding rotating rod 30. The limiting plate 31 is fixedly connected to the lower bottom surface of the wire storage bin 7.

[0034] When the second motor 19 is started, the driving gear 28 drives the transmission gear 29 to rotate, so that the winding and unwinding rotating rod 30 winds and unwinds the steel wire rope 9 to lift the object with the hook 13.

[0035] The working principle of the present utility model is:

[0036] First, move the crane main body 1 to the required position. Then, start the first motor 14. The first motor 14 drives the lifting lead screw 15 to rotate, causing the support sleeve 16 to move downward until the fixed bottom cone 18 below the fixed plate 17 is embedded in the ground. At this time, the fixing component 2 can fix the device so that it will not tip over due to incorrect operation or other factors. Then, turn on the second motor 19. The second motor 19 drives the sliding bottom plate 22 on the moving sleeve 21 to slide towards the support arm 4, and then moves towards the wire storage bin 7 according to the height of the lifted object. If the lifted object sways and collides with the boom 5 during the movement, it will first hit the buffer plate 24. The buffer plate 24 is buffered by the buffer telescopic rod 23, and a force is applied to the extrusion block 26 through the buffer strip 25, causing the buffer spring 27 to play a buffering role, ultimately reducing the impact force of the collision and preventing the boom 5 from being damaged. When the second motor 19 is started, the driving gear 28 drives the transmission gear 29 to rotate, causing the wire winding and unwinding rod 30 to wind and unwind the wire rope 9, so that the hook 13 lifts the object. In addition, the cylindrical pin 12 above the hook 13 adopts an internal thread structure. If the object to be lifted cannot be lifted by the hook 13, other lifting workpieces can be replaced.

[0037] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0038] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A safety protection device for a crane, comprising a crane body (1), characterized in that: A fixing assembly (2) is arranged in the middle of the crane body (1); one end of the crane body (1) is fixedly connected to a fixing seat (3); a support arm (4) is fixedly connected above the fixing seat (3); an end of the support arm (4) away from the fixing seat (3) is rotatably connected to a suspension arm (5); an anti-collision assembly (6) is slidably connected below the suspension arm (5); an end of the suspension arm (5) away from the supporting arm (4) is fixedly connected to a wire reel (7); a retracting assembly (8) is arranged inside the wire retracting assembly (7); a steel wire rope (9) is rotatably connected to the retracting assembly (8); a support plate (10) is fixedly connected below the steel wire rope (9); a fixing rod (11) is fixedly connected below the support plate (10); a cylindrical pin (12) is connected below the fixing rod (11); a hook (13) is fixedly connected below the cylindrical pin (12).

2. The safety protection device for a crane according to claim 1, characterized in that: The fixing assembly (2) comprises a first motor (14), a lifting screw rod (15) is rotatably connected below the first motor (14), a support sleeve (16) is externally threadedly connected to the lifting screw rod (15), a fixing plate (17) is fixedly connected below the support sleeve (16), and a plurality of fixing bottom cones (18) are fixedly connected to the bottom surface of the fixing plate (17).

3. The safety protection device for a crane according to claim 1, characterized in that: The anti-collision component (6) comprises a second motor (19) fixed inside the boom (5); the second motor (19) is rotatably connected to an adjusting screw rod (20); a movable sleeve (21) is threadedly connected to the adjusting screw rod (20); one end of the movable sleeve (21) is fixedly connected to a sliding base plate (22); the sliding base plate (22) is slidably connected to the boom (5); a plurality of buffer telescopic rods (23) are fixedly connected to the sliding base plate (22); and one end of the buffer telescopic rod (23) away from the sliding base plate (22) is fixedly connected to a buffer plate (24).

4. The safety protection device for a crane according to claim 3, characterized in that: A plurality of buffer strips (25) are rotatably connected to the sliding bottom plate (22) and the buffer plate (24); the buffer strips (25) on the sliding bottom plate (22) and the buffer strips (25) on the buffer plate (24) are rotatably connected via an extrusion block (26); and the two extrusion blocks (26) are connected via a buffer spring (27).

5. The safety protection device for a crane according to claim 4, characterized in that: The retractable assembly (8) comprises a driving gear (28), the driving gear (28) being fixedly connected to the end of the adjusting screw rod (20) away from the second motor (19), the driving gear (28) being meshed with a transmission gear (29), the transmission gear (29) being fixedly connected with a retractable rotating rod (30), the retractable rotating rod (30) being rotationally connected to the side wall of the wire retracting bin (7), the retractable rotating rod (30) being rotationally connected to a limit plate (31) in the middle, and the limit plate (31) being fixedly connected to the bottom surface of the wire retracting bin (7).

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