A sway damper and hoisting equipment

Abstract

This invention relates to a sway damper and a hoisting device. The sway damping device includes: a main body; at least one cavity disposed within the main body, with different cavities corresponding to different sway directions, and each cavity filled with damping particles; the at least one cavity includes an annular cavity, a first cylindrical cavity, and a second cylindrical cavity; the annular cavity is coaxially arranged with the main body, and the first and second cylindrical cavities are evenly distributed around a first axis, with the first, second, and third axes perpendicular to each other; wherein the first axis is the axis of the main body, the second axis is the axis of the first cylindrical cavity, and the third axis is the axis of the second cylindrical cavity. The sway damper of this invention can suppress the sway amplitude of materials under inertia when materials are hoisted by a hoisting device.

Description

Technical Field

[0001] The invention belongs to the technical field of hoisting equipment, and in particular relates to a sway suppression damper and hoisting equipment. Background Art

[0002] Lifting equipment (such as a crane) is a common equipment for transporting materials. When using lifting equipment to transport materials, the materials will swing due to inertia. The swing of the materials may cause the materials to fall off the lifting equipment, and may also cause the materials to be unable to be accurately placed. Summary of the invention

[0003] In order to solve the technical problem that materials fall off from the lifting equipment and cannot be accurately delivered due to material swing, the present invention provides a swing damper and a lifting equipment. The technical problem to be solved by the present invention is achieved by the following technical solutions:

[0004] The present invention provides a sway suppression damper, which comprises a body and at least one cavity arranged in the body, different cavities correspond to different swaying directions, and each cavity is filled with damping particles.

[0005] Optionally, in the present invention, the at least one cavity includes a ring-shaped cavity, a first cylindrical cavity and a second cylindrical cavity; the ring-shaped cavity is coaxially arranged with the body, the first cylindrical cavity and the second cylindrical cavity are evenly distributed around the first axis, and the first axis, the second axis and the third axis are perpendicular to each other; wherein the first axis is the axis of the body, the second axis is the axis of the first cylindrical cavity, and the third axis is the axis of the second cylindrical cavity.

[0006] Optionally, in the present invention, in the direction of the first axis, the annular cavity is located between the first cylindrical cavity and the second cylindrical cavity.

[0007] Optionally, in the present invention, the first cylindrical cavity includes two symmetrically arranged first sub-cylindrical cavities, and the second cylindrical cavity includes two symmetrically arranged second sub-cylindrical cavities.

[0008] Optionally, in the present invention, the total mass of the damping particles is proportional to the mass of the weight.

[0009] Optionally, in the present invention, the particle size of the damping particles is positively correlated with the mass of the weight, and the larger the mass, the larger the particle size.

[0010] Optionally, in the present invention, the filling rate of each cavity is determined by the direction corresponding to each cavity.

[0011] Optionally, in the present invention, at least two through holes are provided on the main body, and the axes of the at least two through holes are parallel to the axis of the main body.

[0012] The present invention also provides a hoisting device, which may include the above-mentioned sway suppression damper.

[0013] Beneficial effects of the present invention:

[0014] In the present invention, since at least one cavity in the body is filled with damping particles, and different cavities correspond to different directions, when the body swings in one direction, energy can be consumed by the collision between the damping particles in the cavity corresponding to the direction in the at least one cavity and the friction between the damping particles and the inner wall of the cavity, thereby reducing the swing of the sling connected to the sway damper and the weight suspended on the sling. In this way, the sway damper provided by the present invention can reduce the swing of the weight, thereby preventing the weight from falling off the sling and ensuring that the weight is accurately dropped.

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The schematic diagram of the structure of the sway damper provided by the present invention; wherein, Figure 1 (a) is the cross-sectional view of the sway damper along the XY plane. Figure 1 (b) is the cross-sectional view of the sway damper along the YZ plane. Figure 1 (c) in the figure is a cross-sectional view of the sway suppression damper along the XY plane.

[0017] Figure 2 A possible structural schematic diagram of the sway suppression damper and the supporting component provided by the present invention.

[0018] Figure 3 This is a schematic structural diagram of the lifting equipment provided by the present invention.

[0019] Figure 4 A schematic diagram of the structure of the supporting component; wherein, Figure 4 (a) is a top view of the supporting component. Figure 4 (b) is a cross-sectional view of the supporting component.

[0020] In the figure: 100-sway damper; 101-body; 102-annular cavity; 103-first cylindrical cavity; 104-second cylindrical cavity; 105-first axis; 106-first damping particle filling hole; 107-plug; 108-first sling hole; 109-mounting hole; 110-locating pin hole; 111-threaded through hole; 112-damping particles; A-first part; B-second part; 200-hanging device; 210-supporting member; 211-connecting hole; 212-second sling hole; 213-hinge; 220-movable pulley; 230-hook; 300-operating mechanism; 400-sling. DETAILED DESCRIPTION

[0021] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose, the specific implementation methods, structural features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] Combination Figure 1-Figure 4 As shown, the present invention provides a sway damper 100, which may include a body 101, at least one cavity arranged in the body 101, different cavities correspond to different swaying directions, and each cavity is filled with damping particles 112.

[0023] Optionally, the damping particles may be made of a material that can consume kinetic energy through collision and friction, and the specific material may be determined according to actual use requirements.

[0024] In the present invention, the sway damping device is installed on the hanger 200, so that the sway amplitude of the hanger 200 and the weight suspended on the hanger 200 can be suppressed by the sway damping device.

[0025] Optionally, the sling 200 may be a hook 230, a sling, or a ring, which may be determined according to actual usage requirements.

[0026] It can be understood that in the present invention, different cavities in the at least one cavity mentioned above can correspond to different directions, so that when the sling 200 swings in one direction, the damping particles filled in the cavity corresponding to the direction can also move in the direction. In this way, due to the friction and collision energy between the damping particles and between the inner walls of the cavity of the damping particles, the kinetic energy and gravitational potential energy of the sling 200 can be converted into internal energy, so that the mechanical energy of the sling 200 and the weight on the sling 200 can be greatly reduced, thereby suppressing the swing of the sling 200 and the weight on the sling 200.

[0027] It can be understood that the energy consumed when the damping particles collide with each other can be determined by the Hertz contact theory. Specifically, the energy consumed when the damping particles collide with each other can be calculated by the following formula 1.

[0028] Formula 1:

[0029] Wherein, We is the energy lost by mutual collision of damping particles, m1 is the mass of a single damping particle, m2 is the mass of the sway damper 100, v1 is the movement speed of the damping particles colliding with each other, v2 is the speed of the wall of the sway damper 100 in the swing direction, and e is the elastic recovery coefficient.

[0030] In addition, the direction of the friction force between the damping particles and the inner wall of the cavity is also opposite to the movement direction of the hanger 200 .

[0031] In the present invention, since at least one cavity in the body 101 is filled with damping particles, and different cavities correspond to different directions, when the body 101 swings in one direction, energy can be consumed by collision between damping particles in the cavity corresponding to the direction in the at least one cavity and friction between the damping particles and the inner wall of the cavity, thereby reducing the swing of the hanger 200 connected to the swing damper 100 and the weight suspended on the hanger 200. In this way, the swing damper 100 provided by the present invention can reduce the swing of the weight, thereby preventing the weight from falling off the hanger 200 and ensuring that the weight is accurately dropped.

[0032] Optionally, the at least one cavity may include at least one of the following: a ring-shaped cavity 102, a first cylindrical cavity 103, and a second cylindrical cavity 104; wherein, in a three-dimensional space coordinate system, the ring-shaped cavity 102 is used to suppress the swing of the sling around the axis of the body, the first cylindrical cavity is used to suppress the swing of the sling on the x-axis, and the second cylindrical cavity is used to suppress the swing of the sling on the y-axis.

[0033] Optionally, the at least one cavity may include a ring-shaped cavity 102, a first cylindrical cavity 103 and a second cylindrical cavity 104; the ring-shaped cavity 102 is coaxially arranged with the body 101, the first cylindrical cavity 103 and the second cylindrical cavity 104 are evenly distributed around the first axis 105, and the first axis 105, the second axis and the third axis are perpendicular to each other; wherein the first axis 105 is the axis of the body 101, the second axis is the axis of the first cylindrical cavity 103, and the third axis is the axis of the second cylindrical cavity 104.

[0034] It can be understood that the swing direction of the annular cavity 102 is the direction of rotation around the axis of the main body, and the swing directions corresponding to the first cylindrical cavity 103 and the second cylindrical cavity 104 are the directions perpendicular to the axis of the main body; and the rotation direction corresponding to the first cylindrical cavity 103 is different from the rotation direction corresponding to the second cylindrical cavity 104.

[0035] For example, assuming that the axis of the body is the z-axis, the cylindrical cavity may correspond to the direction of rotation around the z-axis, the first cylindrical cavity 103 may correspond to the direction of swinging along the x-axis, and the second cylindrical cavity 104 may correspond to the direction of swinging along the y-axis.

[0036] Optionally, assuming that the axis of the body 101 is the first axis 105, then on the first axis 105, the annular cavity 102, the first cylindrical cavity 103, and the second cylindrical cavity 104 can be located on the same plane perpendicular to the first axis 105, or on different planes perpendicular to the first axis 105, which can be determined according to actual use requirements. It can be seen that the first cylindrical cavity 103 and the second cylindrical cavity 104 form a cross.

[0037] Optionally, when the annular cavity 102 , the first cylindrical cavity 103 and the second cylindrical cavity 104 are located in different planes perpendicular to the first axis 105 , the annular cavity 102 may be located between the first cylindrical cavity 103 and the second cylindrical cavity 104 in the direction of the first axis 105 .

[0038] Optionally, the first cylindrical cavity 103 may include two first sub-cylindrical cavities symmetrically arranged with respect to the first axis 105 , and the second cylindrical cavity 104 may include two second sub-cylindrical cavities symmetrically arranged with respect to the first axis 105 .

[0039] Optionally, each cavity in the at least one cavity corresponds to a damping particle filling hole, and each damping particle filling hole is sealed by a plug 107 .

[0040] Optionally, the annular cavity 102 may correspond to a first damping particle filling hole 106, and the outlet of the first damping particle filling hole 106 may be arranged on the top surface of the main body 101; the damping particle filling hole corresponding to the first cylindrical cavity 103 may be arranged on the side of the main body 101, and the damping particle filling hole corresponding to the second cylindrical cavity 104 may also be arranged on the side of the main body 101.

[0041] Optionally, the main body 101 may be integrally formed or may be assembled, which may be determined based on actual usage requirements.

[0042] Exemplarily, the body 101 may be a cylindrical structure, the radius of the body 101 may be r1 (e.g., 200 mm), and the height may be h1 (e.g., 250 mm). The body 101 may include a first part A and a second part B, the first part A is disposed on the top of the second part B, and the first part A and the second part B are fixedly connected; for example, threaded through holes 111 are disposed on the first part A and the second part B, so that the first part A and the second part B can be connected by bolts. The annular cavity 102 is formed by the bottom surface of the first part A and the top surface of the second part B, the first cylindrical cavity 103 may be disposed in the first part A, the second cylindrical cavity 104 may be disposed in the first part A, and the first cylindrical cavity 103 and the second cylindrical cavity 104 are spatially symmetrically distributed in a cross shape.

[0043] Optionally, when the body 101 includes a first part A and a second part B, two positioning pin holes 110 are further provided on the first part A and the second part B to align the first part A and the second part B through pins and the positioning pin holes.

[0044] Optionally, the bottom of the body 101 is further provided with K mounting holes 109 for connecting with a lifting device 200 in the lifting equipment, where K is an integer greater than or equal to 2.

[0045] Optionally, when the sway damper 100 is applied to a lifting device including a movable pulley 220, two first sling holes 108 for the sling 400 to pass through are further provided on the main body 101, and the first sling holes 108 of the sling 400 are parallel to the first axis 105 (i.e., the axis of the main body 101).

[0046] Optionally, the total mass of the damping particles filled in at least one cavity is proportional to the mass of the heavy object. In the present invention, the heavy object refers to the heavy object suspended on the sling 200, that is, the goods to be transported.

[0047] Exemplarily, the relationship between the total mass of the damping particles filled in at least one cavity and the mass of the weight is: m≈M*a%.

[0048] Wherein: m is the total mass of the damping particles filled in at least one cavity, M is the mass of the weight, and a is greater than 0.

[0049] Optionally, the particle size of the damping particles filled in at least one cavity is positively correlated with the mass of the weight, and the greater the mass of the weight, the larger the particle size of the damping particles.

[0050] For example, when the mass of the weight is 0-300 kg, the particle size of the damping particles may be 2 mm.

[0051] When the mass of the weight is 300-600kg, the particle size of the damping particles can be: 3mm.

[0052] When the mass of the weight is 600-1000kg, the particle size of the damping particles can be: 4mm.

[0053] In the present invention, assuming that the particle sizes of the damping particles filled in the at least one cavity are the same, the relationship between the volume and mass of a single damping particle can satisfy Formula 2:

[0054] Formula 2: m1=ρ*V.

[0055] Wherein, m1 is the mass of a single damping particle, p is the density of a single damping particle, r is the radius of a single damping particle, and m is the total mass of the damping particles filled in at least one cavity.

[0056] Optionally, the filling rate of each cavity is determined by the direction corresponding to each cavity.

[0057] Exemplarily, the annular cavity 102 corresponds to the rotation direction of the sling 200 (i.e., the direction of rotation around the axis of the main body), and the filling rate of the annular cavity can be 30%; the direction corresponding to the first cylindrical cavity 103 is the direction perpendicular to the running direction of the sling 200 (running in the horizontal plane), that is, the sling 200 swings left and right, and the filling rate of the first cylindrical cavity 103 can be 30-35%; the direction corresponding to the second cylindrical cavity 104 is the running direction of the sling 200, that is, the sling 200 swings back and forth, and the filling rate of the second cylindrical cavity 104 can be 35%-40%.

[0058] The following is an exemplary description of the sway damping device provided by the present invention in combination with a specific example. For example, in the rotation direction of the sling 200, a circular cavity 102 is provided in the middle of the body 101, and a damping particle filling hole is provided at the top of the circular cavity 102 for filling damping particles into the circular cavity 102. The damping particle filling hole is blocked with a plug, the inner diameter of the circular cavity 102 is 160 mm, the outer diameter of the annular circle is 220 mm, the cross-sectional diameter of the circular cavity 102 is 60 mm, and the circular cavity 102 is filled with damping particles with high sway suppression characteristics and elastic coating, and the filling rate is 30%.

[0059] In the left and right swinging direction of the sling 200, two first sub-cylindrical cavities are arranged in the main body 101, and the two first sub-cylindrical cavities are symmetrically arranged relative to the axis of the main body 101. The diameter of the first sub-cylindrical cavity is 70mm, and the length of the first sub-cylindrical cavity is 100mm~150mm; and the two first sub-cylindrical cavities are both filled with damping particles with high anti-sway properties and elastic coatings, and the filling rate is 30%~35%.

[0060] In the forward and backward swinging direction of the sling 200, two second cylindrical cavities 104 are arranged in the main body 101, and the two second sub-cylindrical cavities are symmetrically arranged relative to the axis of the main body 101, and the axis of the second sub-cylindrical cavity is perpendicular to the axis of the first sub-cylindrical cavity. The diameter of the second sub-cylindrical cavity is 70mm, and the length of the second sub-cylindrical cavity is 100mm~150mm. The two first sub-cylindrical cavities are both filled with damping particles with high anti-sway properties and elastic coatings, and the filling rate is 35~45%.

[0061] Combined with the above Figure 1 and Figure 2 ,like Figure 3 and Figure 4 As shown, the present invention can also provide a hoisting device, which can include the above-mentioned sway suppression damping device.

[0062] Optionally, the lifting equipment may be a straight-line crane, which may include a running mechanism 300 (such as an aerial trolley), a sling 200, a sling 400 and a sway damper 100. The sling 200 is connected to the running mechanism 300 through the sling 400, the sway damper 100 is installed between the running mechanism 300 and the sling 200, and the sway damper 100 is movably connected to the sling 200.

[0063] Optionally, the sling 200 may include a supporting component 210, a movable pulley 220 and a hook 230, the top of the movable pulley 220 is movably connected to the supporting component 210, the bottom of the movable pulley 220 is movably connected to the hook 230, the movable pulley 220 is connected to the operating mechanism 300 by falling, and the supporting component 210 is fixedly connected to the bottom of the sway damper 100.

[0064] Optionally, K mounting holes 109 are provided at the bottom of the sway damper 100; correspondingly, K connecting holes 211 can be provided on the supporting component 210, and the sway damper 100 and the supporting component 210 can be fixedly connected by M connecting components (such as screws), where K is an integer greater than 2.

[0065] Optionally, the K threaded holes may be evenly distributed.

[0066] Optionally, the support member 210 may be a disk with a radius of r0 and a thickness of h0, and a hinge portion 213 is provided at the bottom of the disk for hinge connection with the movable pulley 220. For example, r0 may be equal to 100 mm, and h0 may be equal to 20 mm.

[0067] Optionally, two first sling holes 212 of the sling 400 corresponding to the first sling holes 108 of the two slings 400 are provided on the supporting component 210, so that one end of the sling 400 can pass through one first sling hole 108 of the sling 400 and one first sling hole 212 of the sling 400, bypass the movable pulley 220, and then pass through the other first sling hole 108 of the sling 400 and the other first sling hole 212 of the sling 400; and both ends of the sling 400 are connected to the operating mechanism 300.

[0068] In the straight-line crane provided by the present invention, during the operation of the straight-line crane, the sway suppression damper 100 can effectively reduce the rotation or swing of the heavy object. Specifically, when the hanger 200 swings, it can drive the sway suppression damper 100 to swing in the same direction, so that collisions and frictions can be generated between the damping particles filled in at least one cavity in the sway suppression damper 100 and between the damping particles and the inner wall of at least one cavity, so that the kinetic energy of the hanger 200 can be consumed through these collisions and frictions, thereby achieving the purpose of suppressing the rotation, left and right, and front and back swinging of the hanger 200.

[0069] Furthermore, the one-line crane can also quickly and effectively suppress the swing of heavy objects when they are suspended, promote the rapid restoration of stability of heavy objects, accurately land heavy objects, ensure the stability of stacking, and improve the efficiency of safe handling. The one-line crane has a wide range of application environments in the field of intelligent equipment manufacturing, and the one-line crane only needs to add a sway damper 100 pieces, so the original structure of the one-line crane is slightly changed, the cost is small, the energy consumption is low, the sway suppression effect is obvious, and it has obvious application prospects.

[0070] It can be understood that the above embodiment is illustrated by taking a straight-beam crane as an example. In actual implementation, the above sway damper 100 can also be applied to any other possible lifting equipment.

[0071] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A sway damper, characterized in that: The sway damper (100) comprises a body (101), at least one cavity arranged in the body, different cavities corresponding to different sway directions, and each cavity is filled with damping particles (112); The at least one cavity comprises a circular ring-shaped cavity (102), a first cylindrical cavity (103) and a second cylindrical cavity (104); The annular cavity (102) is coaxially arranged with the body (101); the first cylindrical cavity (103) and the second cylindrical cavity (104) are evenly distributed around the first axis (105); and the first axis (105), the second axis and the third axis are perpendicular to each other; Wherein, the first axis (105) is the axis of the body (102), the second axis is the axis of the first cylindrical cavity (103), and the third axis is the axis of the second cylindrical cavity (104); In the direction of the first axis (105), the annular cavity (102) is located between the first cylindrical cavity (103) and the second cylindrical cavity (104).

2. The sway damper according to claim 1, characterized in that: The first cylindrical cavity (103) includes two first sub-cylindrical cavities symmetrically arranged relative to the first axis, and the second cylindrical cavity (104) includes two second sub-cylindrical cavities symmetrically arranged relative to the first axis.

3. The sway damper according to claim 1, characterized in that: The total mass of the damping particles (112) is proportional to the mass of the weight.

4. The sway damper according to claim 1, characterized in that: The particle size of the damping particles (112) is positively correlated with the mass of the weight; the larger the mass, the larger the particle size.

5. The sway damper according to claim 1, characterized in that: The filling rate of each cavity is determined by the swing direction corresponding to each cavity.

6. A lifting device, characterized in that: The lifting equipment comprises the sway damper (100) according to any one of claims 1 to 5.

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