Swing reducing device for lifting appliance of crane

Abstract

The invention discloses a lifting appliance anti-swing device of a crane, and particularly relates to the technical field of cranes, the lifting appliance anti-swing device comprises a moving device, the top of the moving device is fixedly connected with a first transmission assembly, the bottom of the moving device is fixedly connected with four symmetrically distributed hydraulic cylinders, and the bottoms of piston rods of the four hydraulic cylinders are jointly and fixedly connected with a lifting assembly; four limiting assemblies which are symmetrically distributed are arranged in the center of the top of the lifting assembly, and a lifting hook is fixedly connected to the bottom of the lifting assembly. According to the lifting appliance anti-swing device of the crane, by designing the lifting assembly and the limiting assembly, swing of a steel wire rope in the longitudinal direction and the transverse direction in the lifting process can be weakened, and the stability of equipment operation is improved; when the steel wire rope swings left and right, a second spring can drive an arc-shaped plate to extrude a second sliding shaft to slide, so that a second limiting wheel is further pushed to return to the initial position, the steel wire rope is lifted at the original position, and swinging of the device is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of cranes, and in particular to a sling sway reduction device for a crane. Background Art

[0002] A crane is a multi-action lifting machine that can lift and carry heavy objects vertically and horizontally within a certain range. A bridge crane is a device used to carry heavy objects in factories, workshops, warehouses, etc. It is particularly suitable for applications with large spans and large loads. It is mainly composed of a bridge, a lifting trolley and a track.

[0003] However, when existing bridge cranes transfer materials through slings, the wire rope is relatively soft and can easily shake during the lifting process. If the shaking is too severe, it may collide with surrounding machines or objects, causing losses. In severe cases, the wire rope may even deviate, and the material may fall directly to the ground, causing an accident. Furthermore, if the sling and the material shake, the material cannot be quickly and accurately positioned, which reduces work efficiency.

[0004] Chinese patent publication number CN114803854B discloses a crane sling sway reduction device. The purpose of the above document is to provide a crane sling sway reduction device with high safety and the ability to improve work efficiency. The above document provides such a crane sling sway reduction device, which also includes a load-bearing shaft, a high-strength chain plate and a mounting plate. The load-bearing shaft is connected with a high-strength chain plate, which is wound around the load-bearing shaft. The high-strength chain plate is used to limit the sling of the bridge crane. A mounting plate is connected between the side of the high-strength chain plate away from the mounting frame. The limit frame in the equipment described in the above document can limit the sling. As the high-strength chain plate is relaxed and wound, the limit frame will rise and fall with the sling, and the mounting frame will limit the high-strength chain plate, so that the limit frame and the sling can rise and fall vertically to prevent the sling from shaking at will. The safety is high, and the material can be accurately positioned to improve work efficiency.

[0005] The above patent document can realize the vertical rise and fall of the limit frame and the sling, and can prevent the sling from shaking during the lifting process. However, it is lifted and lowered by a high-strength chain plate, which requires continuous addition of lubricating oil to the high-strength chain plate, resulting in high maintenance costs. Summary of the invention

[0006] The main purpose of the present invention is to provide a crane sling anti-sway device, which can effectively solve the problem of high maintenance cost due to the need to continuously add lubricating oil to the high-strength chain plate during lifting and lowering.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] A sling anti-sway device for a crane comprises a moving device, wherein two groups of symmetrically distributed rope winding components one and two are fixedly connected to the top of the moving device, a transmission component one is fixedly connected to the top of the moving device, four symmetrically distributed hydraulic cylinders are fixedly connected to the bottom of the moving device, a lifting component is commonly fixedly connected to the bottoms of the piston rods of the four hydraulic cylinders, four symmetrically distributed limit components are arranged at the center position of the top of the lifting component, and a hook is fixedly connected to the bottom of the lifting component.

[0009] Preferably, the rope winding assembly includes a support, the bottom of the support is fixedly connected to the top of the travel device, a rotating shaft is rotatably connected between the front side wall and the rear side wall of the support, and the rear end of the rotating shaft passes through the support and extends into the outside, and a reel is fixedly connected to the outer surface of the rotating shaft.

[0010] Preferably, the rope winding assembly 2 includes a support 2, the bottom of the support 2 is fixedly connected to the top of the moving device, a rotating shaft 2 is rotatably connected between the left and right walls of the support 2, and a reel 2 is fixedly connected to the outer surface of the rotating shaft 2.

[0011] Preferably, the transmission component 1 includes a mounting platform, the bottom of the mounting platform and the top of the moving device are fixedly connected, a motor is fixedly installed on the top of the mounting platform, a protective shell is installed on the top of the mounting platform, the output end of the motor is fixedly connected to a worm through a coupling, the outer surface of the worm is meshed with a worm wheel, the inner surface of the worm wheel is fixedly connected to a rotating shaft three, the outer surface of the rotating shaft three is fixedly connected to a bevel gear 1, the outer surface of the bevel gear 1 is meshed with bevel gear 2 and bevel gear 3, and the bevel gear 2 and bevel gear 3 are respectively fixedly connected to the outer surfaces of two rotating shafts 2, and two transmission components 2 are arranged on the top of the moving device.

[0012] Preferably, the transmission component 2 includes an L-support plate, the bottom of the L-support plate is fixedly connected to the top of the moving device, one end of the rotating shaft 1 is fixedly connected to a bevel gear 4, the outer surface of the bevel gear 4 is meshed with a bevel gear 5, and the bevel gear 5 is fixedly connected to the outer surface of the rotating shaft 2.

[0013] Preferably, the lifting assembly includes a fixed plate, the top of the fixed plate is fixedly connected to the bottom of four hydraulic cylinder piston rods, the bottom of the fixed plate is fixedly connected to two symmetrically distributed connecting brackets, the bottom of the connecting bracket is fixedly connected to two symmetrically distributed limiting columns, the outer surfaces of the four limiting columns are slidably connected to a movable plate, the bottom of the connecting bracket is fixedly connected to two symmetrically distributed springs 1, the bottom of the spring 1 is fixedly connected to a buffer ring plate, and the spring 1 and the buffer ring plate are both mounted on the outer surface of the limiting column.

[0014] Preferably, the limit assembly includes a shell, the bottom of the shell is fixedly connected to the top of the fixed plate, the left end and the right end of the shell are each provided with two symmetrically distributed sliding grooves 1, the inner surfaces of the two sliding grooves 1 are relatively slidably connected with a sliding shaft 1, the outer surface of the sliding shaft 1 is rotatably connected with a limit wheel 1, the front and rear ends of the shell are each provided with two symmetrically distributed sliding grooves 2, the inner surfaces of the two sliding grooves 2 are relatively slidably connected with a sliding shaft 2, the outer surface of the sliding shaft 2 is rotatably connected with a limit wheel 2, and the inner surfaces of the sliding groove 1 and the sliding groove 2 are provided with reset assemblies.

[0015] Preferably, the reset assembly includes a second spring, the second spring is fixedly connected to the inner surface of the second sliding groove, and one end of the second spring is fixedly connected to an arc plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention can realize the lifting operation of the lifting assembly through the rope winding assembly 1 and the rope winding assembly 2 placed in different positions by setting the transmission assembly 1 in cooperation with the rope winding assembly 1 and the rope winding assembly 2. At the same time, the worm and the worm gear can ensure that the equipment will not stop running during the lifting process, causing the goods to slip, thereby improving safety.

[0018] 2. The lifting assembly and the limiting assembly provided in the present invention can reduce the swing of the wire rope in the longitudinal and lateral directions during the lifting process, thereby improving the stability of the equipment operation. When the wire rope swings left and right, the spring 2 will drive the arc plate to squeeze the sliding shaft 2 to slide, thereby further pushing the limiting wheel 2 back to the initial position, so that the wire rope can be lifted at the original position, thereby reducing the swing of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is another perspective overall structural schematic diagram of the present invention;

[0021] Figure 3 It is a schematic cross-sectional view of a local structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the lifting assembly of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the limit assembly of the present invention;

[0024] Figure 6 It is a schematic cross-sectional view of the position limiting assembly of the present invention;

[0025] Figure 7 For the present invention Figure 3 The enlarged schematic diagram at A in the middle;

[0026] Figure 8 For the present invention Figure 3 The enlarged schematic diagram of point B in the middle;

[0027] Fig. 9 For the present invention Figure 4 The enlarged schematic diagram at A in the middle;

[0028] Fig.10 For the present invention Figure 6 Enlarged schematic diagram at point D in the middle.

[0029] In the figure: 1, moving device; 2, rope winding assembly 1; 21, support 1; 22, rotating shaft 1; 23, drum 1; 3, rope winding assembly 2; 31, support 2; 32, rotating shaft 2; 33, drum 2; 4, transmission assembly 1; 41, mounting table; 42, motor; 43, worm; 44, worm wheel; 45, rotating shaft 3; 46, bevel gear 1; 47, bevel gear 2; 48, bevel gear 3; 49, transmission assembly 2; 491, L support plate; 492, bevel gear Wheel four; 493, bevel gear five; 5, hydraulic cylinder; 6, lifting assembly; 61, fixed plate; 62, connecting bracket; 63, limiting column; 64, moving plate; 65, spring one; 66, buffer ring plate; 7, limiting assembly; 71, housing; 72, sliding groove one; 73, sliding shaft one; 74, limiting wheel one; 75, sliding groove two; 76, sliding shaft two; 77, limiting wheel two; 78, reset assembly; 781, spring two; 782, arc plate; 8, hook. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] like Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, a sling anti-sway device for a crane comprises a traveling device 1, two sets of symmetrically distributed rope winding components 1 and 2 and 3 are fixedly connected to the top of the traveling device 1, the rope winding component 2 comprises a support 21, the bottom of the support 21 is fixedly connected to the top of the traveling device 1, a rotating shaft 22 is rotatably connected between the front side wall and the rear side wall of the support 21, and the rear end of the rotating shaft 22 penetrates the support 21 and extends into the outside, and a reel 23 is fixedly connected to the outer surface of the rotating shaft 22;

[0032] The rope winding assembly 2 3 comprises a support 2 31, the bottom of the support 2 31 is fixedly connected to the top of the moving device 1, a rotating shaft 2 32 is rotatably connected between the left and right walls of the support 2 31, and a reel 2 33 is fixedly connected to the outer surface of the rotating shaft 2 32;

[0033] In the actual placement process, the reel 1 23 and the reel 2 33 are placed longitudinally and transversely respectively to avoid excessive load on the wire rope during the winding process during the lifting process, thereby causing the wire rope to break and cause an accident. At the same time, according to the rotation direction of the rotating shaft 1 22 and the rotating shaft 2 32, the winding direction of the wire rope on the reel 1 23 and the reel 2 33 needs to be changed to ensure that the equipment can achieve normal winding operation;

[0034] The moving device 1 used in this solution is a conventional design of the prior art, which is mainly used for bridge cranes to facilitate the movement of the sling. Its model and style can be designed or selected according to actual conditions, and its operation mode is not explained in detail in this solution.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, the top of the moving device 1 is fixedly connected with a transmission component 14, and the transmission component 14 includes a mounting platform 41, the bottom of the mounting platform 41 is fixedly connected to the top of the moving device 1, a motor 42 is fixedly installed on the top of the mounting platform 41, and a protective shell is installed on the top of the mounting platform 41. The output end of the motor 42 is fixedly connected to a worm 43 through a coupling, and a worm wheel 44 is meshed on the outer surface of the worm 43. The inner surface of the worm wheel 44 is fixedly connected to a rotating shaft 3 45, and the outer surface of the rotating shaft 3 45 is fixedly connected to a bevel gear 1 46, and the outer surface of the bevel gear 1 46 is meshed. There are bevel gears 2 47 and 3 48, and bevel gears 2 47 and 3 48 are respectively fixedly connected to the outer surfaces of the two rotating shafts 2 32. Two transmission components 2 49 are arranged on the top of the moving device 1. The transmission component 2 49 includes an L support plate 491. The bottom of the L support plate 491 is fixedly connected to the top of the moving device 1. One end of the rotating shaft 1 22 is fixedly connected to a bevel gear 4 492. The outer surface of the bevel gear 4 492 is meshed with a bevel gear 5 493, and the bevel gear 5 493 is fixedly connected to the outer surface of the rotating shaft 2 32.

[0036] In this solution, the wire rope passes through the positioning hole at the top of the moving device 1, and then passes through the limiting assembly 7 for limiting, and finally is fixedly connected to the top of the moving plate 64, so as to facilitate the subsequent lifting operation of the hook 8;

[0037] Start the motor 42. At this time, the output end of the motor 42 drives the worm 43 to rotate through the coupling. The worm 43 will further drive the worm wheel 44 to rotate while rotating, thereby driving the rotating shaft three 45 to rotate. During the rotation process, the rotating shaft three 45 will further drive the bevel gear one 46 on the outer surface of the rotating shaft three 45 to rotate, thereby further driving the bevel gear two 47 and the bevel gear three 48 to rotate, thereby driving the two reels two 33 to perform the operations of winding and releasing the line. When the rotating shaft two 32 rotates, it will also drive the bevel gear five 493 to rotate, thereby further driving the bevel gear four 492 to rotate. When the bevel gear four 492 rotates, it will further drive the rotating shaft one 22 to rotate, thereby driving the reel one 23 to perform the operations of winding and releasing the line.

[0038] like Figure 4 and Fig. 9 As shown, four symmetrically distributed hydraulic cylinders 5 are fixedly connected to the bottom of the moving device 1. The hydraulic cylinders 5 mainly play the role of auxiliary lifting and improving the stability of the equipment. The bottoms of the piston rods of the four hydraulic cylinders 5 are commonly fixedly connected to a lifting assembly 6. The lifting assembly 6 includes a fixed plate 61. The top of the fixed plate 61 is fixedly connected to the bottoms of the piston rods of the four hydraulic cylinders 5. The bottom of the fixed plate 61 is fixedly connected to two symmetrically distributed connecting brackets 62. The bottom of the connecting bracket 62 is fixedly connected to two symmetrically distributed limiting columns 63. The outer surfaces of the four limiting columns 63 are commonly slidably connected to a moving plate 64. The bottom of the connecting bracket 62 is fixedly connected to two symmetrically distributed springs 65. The bottom of the spring 65 is fixedly connected to a buffer ring plate 66, and the spring 65 and the buffer ring plate 66 are both sleeved on the outer surface of the limiting column 63.

[0039] When the device rises to a certain position, the movable plate 64 will slide along the limit column 63 and squeeze the buffer ring plate 66, thereby further compressing the spring 1 65. At this time, the spring 1 65 can buffer and weaken the kinetic energy generated during the rising process of the movable plate 64, thereby improving the stability of the device and playing a role in reducing swing to a certain extent.

[0040] like Figure 5 , Figure 6 and Fig.10As shown, four symmetrically distributed limiting components 7 are arranged at the top center position of the lifting component 6, the limiting component 7 includes a shell 71, the bottom of the shell 71 is fixedly connected to the top of the fixed plate 61, the left end and the right end of the shell 71 are provided with two symmetrically distributed sliding grooves 72, the inner surfaces of the two sliding grooves 72 are slidably connected with a sliding shaft 73, the outer surface of the sliding shaft 73 is rotatably connected with a limiting wheel 74, the front end and the rear end of the shell 71 are provided with two symmetrically distributed sliding grooves 75, the inner surfaces of the two sliding grooves 75 are slidably connected with a sliding shaft 76, the outer surface of the sliding shaft 76 is rotatably connected with a limiting wheel 77, the inner surfaces of the sliding groove 72 and the sliding groove 75 are provided with a reset component 78, the reset component 78 includes a spring 781, the spring 781 is fixedly connected to the inner surface of the sliding groove 75, one end of the spring 781 is fixedly connected with an arc plate 782, and the bottom of the lifting component 6 is fixedly connected with a hook 8;

[0041] The hook 8 used in this solution is a conventional design of the prior art, and can be designed and selected accordingly according to actual conditions, and its use is not described in this solution;

[0042] The steel wire rope passes through the top of the shell 71 and is limited by two limiting wheels 1 74 and two limiting wheels 2 77. When the steel wire rope swings during the lifting process, the sliding shaft 1 73 or the sliding shaft 2 76 will move in the corresponding direction according to the swinging direction. At this time, the sliding shaft 1 73 or the sliding shaft 2 76 will squeeze the arc plate 782. At this time, the squeezed arc plate 782 will further compress the spring 2 781. When the power generated by the swing is absorbed by the spring 2 781, the spring 2 781 will rebound and push the sliding shaft 1 73 or the sliding shaft 2 76 back to its original position, so that the two limiting wheels 1 74 and the two limiting wheels 2 77 limit the steel wire rope, reduce its swinging amplitude, improve the stability of the equipment operation, and at the same time improve the safety of the staff's work.

[0043] The working principle of the present invention is as follows: the cargo is hung on the hook 8, and then the motor 42 is started. At this time, the output end of the motor 42 drives the worm 43 to rotate through the coupling. The worm 43 will further drive the worm wheel 44 to rotate while rotating, thereby driving the rotating shaft three 45 to rotate. The rotating shaft three 45 will further drive the bevel gear one 46 on the outer surface of the rotating shaft three 45 to rotate during the rotation process, thereby further driving the bevel gear two 47 and the bevel gear three 48 to rotate, thereby driving the two reels two 33 to perform the operations of winding and releasing the line. When the rotating shaft two 32 rotates, it will drive the bevel gear five 493 to rotate, thereby further driving the bevel gear four 492 to rotate. When the bevel gear four 492 rotates, it will further drive the rotating shaft one 22 to rotate, thereby driving the reel one 23 to perform the operations of winding and releasing the line. The wire rope passes through the top of the outer shell 71 and passes through the two The limiting wheel 1 74 and the two limiting wheels 2 77 perform limiting operations. When the wire rope swings during the lifting process, the sliding shaft 1 73 or the sliding shaft 2 76 will move in the corresponding direction according to the different swinging directions. At this time, the sliding shaft 1 73 or the sliding shaft 2 76 will squeeze the arc plate 782. At this time, the squeezed arc plate 782 will further compress the spring 2 781. When the power generated by the swing is absorbed by the spring 2 781, the spring 2 781 will rebound and push the sliding shaft 1 73 or the sliding shaft 2 76 back to its original position, so that the two limiting wheels 1 74 and the two limiting wheels 2 77 limit the wire rope and reduce its swing amplitude; when the equipment rises to a certain position, the moving plate 64 will slide along the limiting column 63 and squeeze the buffer ring plate 66, thereby further compressing the spring 1 65. At this time, the spring 1 65 can buffer and weaken the kinetic energy generated during the rising process of the moving plate 64.

[0044] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A crane sling sway reduction device, comprising a travel device (1), characterized in that: The top of the moving device (1) is fixedly connected to two groups of symmetrically distributed rope winding components one (2) and rope winding components two (3), the top of the moving device (1) is fixedly connected to a transmission component one (4), the bottom of the moving device (1) is fixedly connected to four symmetrically distributed hydraulic cylinders (5), the bottoms of the piston rods of the four hydraulic cylinders (5) are commonly fixedly connected to a lifting component (6), four symmetrically distributed limit components (7) are arranged at the center position of the top of the lifting component (6), and the bottom of the lifting component (6) is fixedly connected to a hook (8).

2. The crane sling sway reduction device according to claim 1, characterized in that: The rope winding assembly (2) comprises a support (21), the bottom of the support (21) is fixedly connected to the top of the travel device (1), a rotating shaft (22) is rotatably connected between the front side wall and the rear side wall of the support (21), and the rear end of the rotating shaft (22) passes through the support (21) and extends into the outside, and a reel (23) is fixedly connected to the outer surface of the rotating shaft (22).

3. The crane sling sway reduction device according to claim 1, characterized in that: The rope winding assembly 2 (3) comprises a support 2 (31), the bottom of the support 2 (31) is fixedly connected to the top of the moving device (1), a rotating shaft 2 (32) is rotatably connected between the left and right walls of the support 2 (31), and a reel 2 (33) is fixedly connected to the outer surface of the rotating shaft 2 (32).

4. The crane sling sway reduction device according to claim 3, characterized in that: The transmission assembly 1 (4) comprises a mounting platform (41), the bottom of the mounting platform (41) is fixedly connected to the top of the travel device (1), a motor (42) is fixedly mounted on the top of the mounting platform (41), a protective shell is mounted on the top of the mounting platform (41), an output end of the motor (42) is fixedly connected to a worm (43) via a coupling, an outer surface of the worm (43) is meshed with a worm wheel (44), an inner surface of the worm wheel (44) is fixedly connected to a rotating shaft 3 (45), an outer surface of the rotating shaft 3 (45) is fixedly connected to a bevel gear 1 (46), an outer surface of the bevel gear 1 (46) is meshed with a bevel gear 2 (47) and a bevel gear 3 (48), and the bevel gear 2 (47) and the bevel gear 3 (48) are respectively fixedly connected to the outer surfaces of two rotating shafts 2 (32), and two transmission assemblies 2 (49) are arranged on the top of the travel device (1).

5. The crane sling sway reduction device according to claim 4, characterized in that: The transmission assembly 2 (49) comprises an L support plate (491), the bottom of the L support plate (491) is fixedly connected to the top of the travel device (1), one end of the rotating shaft 1 (22) is fixedly connected to a bevel gear 4 (492), the outer surface of the bevel gear 4 (492) is meshed with a bevel gear 5 (493), and the bevel gear 5 (493) is fixedly connected to the outer surface of the rotating shaft 2 (32).

6. The crane hanger sway reduction device according to claim 1, characterized in that: The lifting assembly (6) includes a fixed plate (61), the top of the fixed plate (61) is fixedly connected to the bottom of the piston rods of four hydraulic cylinders (5), the bottom of the fixed plate (61) is fixedly connected to two symmetrically distributed connecting brackets (62), the bottom of the connecting bracket (62) is fixedly connected to two symmetrically distributed limiting columns (63), the outer surfaces of the four limiting columns (63) are slidably connected to a movable plate (64), the bottom of the connecting bracket (62) is fixedly connected to two symmetrically distributed springs (65), the bottom of the spring (65) is fixedly connected to a buffer ring plate (66), and the spring (65) and the buffer ring plate (66) are both sleeved on the outer surfaces of the limiting columns (63).

7. The crane sling sway reduction device according to claim 6, characterized in that: The limiting assembly (7) comprises a shell (71), the bottom of the shell (71) being fixedly connected to the top of the fixing plate (61), the left end and the right end of the shell (71) being provided with two symmetrically distributed sliding grooves (72), the inner surfaces of the two sliding grooves (72) being slidably connected to a sliding shaft (73), the outer surface of the sliding shaft (73) being rotatably connected to a limiting wheel (74), the front end and the rear end of the shell (71) being provided with two symmetrically distributed sliding grooves (75), the inner surfaces of the two sliding grooves (75) being slidably connected to a sliding shaft (76), the outer surface of the sliding shaft (76) being rotatably connected to a limiting wheel (77), and the inner surfaces of the sliding grooves (72) and (75) being provided with a reset assembly (78).

8. The crane sling sway reduction device according to claim 7, characterized in that: The reset assembly (78) comprises a second spring (781), wherein the second spring (781) is fixedly connected to the inner surface of the second sliding groove (75), and one end of the second spring (781) is fixedly connected to an arc plate (782).

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